Patent Grant
11335229
Embodiments disclosed in the disclosure relate to a display including a gamma block and an electronic device including the display.
With the development of information technology (IT), various types of electronic devices including a display, such as smart phones and tablet personal computers, have been widely used. A user may perform various functions such as Internet, games, and playback of video files through the display.
The display may provide content to the user through various colors of light, and the brightness, contrast, or grayscale of the various colors of light may be adjusted in various levels. In particular, the display may include a gamma block that applies grayscale voltages with various magnitudes to pixels included in the display to adjust the grayscale.
Meanwhile, in recent years, the electronic device may have a so-called always on display (AOD) function that allows specified content to be always displayed even when the user does not use the electronic device.
The AOD function requires continuous output of image data, leading to inevitable power consumption of a predetermined magnitude or more. The power consumption is directly related to the battery life of the electronic device, and power consumption of a predetermined magnitude or more may shorten the use time of the electronic device.
A method of minimizing the levels of a grayscale voltage applied to pixels may be considered to minimize the power consumption, but in this case, an image quality of content output to the display may be deteriorated.
Accordingly, there is a need for a method capable of maintaining the image quality of the content above a specified level while minimizing power consumption.
According to an embodiment disclosed in the disclosure, a display may include a display panel including a first region in which first group subpixels are disposed and a second region in which second group subpixels are disposed, a converter group including converters respectively connected to subpixels included in the first group subpixels and the second group subpixels to transfer image data for output of specified content to the subpixels, a first group gamma circuit selectively connected to the converters to output a first grayscale voltage whose intensity is determined based on a plurality of binary bits, a second group gamma circuit selectively connected to the subpixels to output a second grayscale voltage whose intensity is determined based on a single binary bit, and a controller that controls selective connections between the first group gamma circuit and the converters and selective connections between the second group gamma circuit and the subpixels, and the controller may receive the image data from an external processor and transfer the image data to the converter group, connect the first group gamma circuit with at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters of the converter group, connect the second group gamma circuit with the second group subpixels such that the second group gamma circuit applies the second grayscale voltage to the second group subpixels, and output the specified content to at least a portion of the first region.
Further, according to an embodiment disclosed in the disclosure, an electronic device may include a display panel including a display area and a non-display area, and a display driving circuit that drives the display panel and includes a gamma driving circuit including a first group gamma circuit and a second group gamma circuit, and the display driving circuit may identify the display area on which content is to be displayed, display the content on the display area using the gamma driving circuit set to a state in which an output of the first group gamma circuit is activated and an output of the second group gamma circuit is deactivated, and display a specified color on the non-display area on which the content is not displayed, using the gamma driving circuit set to a state in which the output of the first group gamma circuit is deactivated and the output of the second group gamma circuit is activated.
According to the embodiments disclosed in the disclosure, it is possible to provide a variety of high-definition content to the user even in the AOD state, thus providing higher use convenience to the user. In addition, it is possible to efficiently control the power consumption of the electronic device, thereby providing a longer usage time to the user. In addition, various effects may be provided that are directly or indirectly understood through the disclosure.
In the description of the drawings, the same or similar reference numerals may be used for the same or similar components.
Referring to
According to an embodiment, the electronic device 100 may support an AOD function. Accordingly, an operation mode of the electronic device 100 (e.g., an operation mode of the display 101) may include a normal mode and an AOD mode. In one embodiment, the normal mode may be an operation mode in which the AOD function is not executed and the electronic device 100 is able to provide various types of functions (e.g., Internet, game, image or video shooting, execution of various applications, or playback of video files) to a user.
According to an embodiment, the AOD mode may be an operation mode in which the electronic device 100 is able to provide a user with relatively limited functions compared to the normal mode. In the AOD mode, the electronic device 100 may display specified content (e.g., clock, date, image, battery status, or home button) in a specified area even when the user does not use the electronic device 100.
In one embodiment, when the electronic device 100 is in the AOD mode, a processor included in the electronic device 100 may switch an operation state to a low power state (e.g., an inactive state or a sleep state). In this case, an operation of outputting the content to the display 101 of the electronic device 100 may be performed, for example, by a display driving circuit.
According to an embodiment, the display driving circuit may be a circuit that controls the operation of the display 101. For example, the display driving circuit may provide image data to pixels included in the display 101. For another example, the display driving circuit may change at least one of brightness, contrast, or grayscale of a screen output to the display 101.
According to an embodiment, in the AOD mode, the display driving circuit may be operated by an internal power module. In the AOD mode, the display driving circuit may provide image data to the pixels at a lower driving frequency than that in the normal mode.
According to an embodiment, the area of the display 101 may be divided according to whether content is displayed. For example, as shown in
In one embodiment, the first content 10a may include time, day of the week, date, and/or information (message reception, missed call) capable of being provided to the user. In one embodiment, the second content 10b may be content displaying a specified object (e.g., a home button). The user may switch the operation mode of the electronic device 100 from the AOD mode to the normal mode by applying a touch input (e.g., pressure, double tap, long press, or the like) to the second content 10b.
In various embodiments, division of the area of the display 101 may be applied to division of an area of the display panel in the same or similar manner. For example, the display panel may include the first region 11a including pixels that display the first content 10a, the first region 11b including pixels that display the second content 10b, and the second regions 12a and 12b including pixels that do not display the first content 10a and the second content 10b. In the disclosure, the first regions 11a and 11b may be referred to as display areas, and the second regions 12a and 12b may be referred to as non-display areas.
According to an embodiment, a grayscale voltage may be applied to pixels included in the display panel by a gamma block. The gamma block may apply the grayscale voltage to pixels included in the display panel and adjust a grayscale value of light emitted by the pixels.
According to an embodiment, the grayscale voltage may include a plurality of grayscale voltages classified according to an intensity of the grayscale voltage. For example, the grayscale voltages may have 256 different grayscale voltages classified by a plurality of binary bits, for example, 8 binary bits. In various embodiments, the number of the plurality of binary bits may be 10, 12, or more. When the grayscale voltages of different intensities are applied to the pixels, the light emitted by the pixels may have different grayscale values. For another example, the grayscale voltages may have two different grayscale voltages distinguished by a single binary bit. The pixels may represent light having different grayscale values by one of the two grayscale voltages.
According to various embodiments, the level of the grayscale voltage by the single binary bit may be variously set. For example, the grayscale voltage by the single binary bit may be set to have any two different grayscale voltages among 256 different grayscale voltages by the 8-bit binary bits.
According to an embodiment, different grayscale voltages may be applied to pixels disposed in the first regions 11a and 11b and pixels disposed in the second regions 12a and 12b. For example, a first grayscale voltage may be applied to pixels disposed in the first regions 11a and 11b including content (e.g., the first content 10a or the second content 10b), and a second grayscale voltage may be applied to pixels disposed in the second regions 12a and 12b that do not include the content.
According to an embodiment, the gamma block may include a first group gamma circuit that generate the first grayscale voltage and a second group gamma circuit that generate the second grayscale voltage.
According to an embodiment, the first group gamma circuit may be set such that the intensity of the grayscale voltage is adjusted by a plurality of binary bits, for example, 8 binary bits, to maintain an image quality of the content above a specified level. According to an embodiment, the second group gamma circuit may be set such that the intensity of the grayscale voltage is adjusted by a single binary bit to minimize power consumption.
According to various embodiments, the division of the area of the display 101 or the display panel shown in
In the disclosure, the contents described with reference to
Referring to
According to an embodiment, the remaining components except the display panel 210 in the display 101, for example, the converter group 220, the first group gamma circuit 230, the second group gamma circuit 240, the first group switches 231_1 to 231_n, the second group switches 241_1 to 241_n, and the controller 250 may constitute a display driving circuit DDI for operation of the display 101.
The display panel 210 may include a first region 211 and a second region 212. According to an embodiment, the first region 211 and the second region 212 may represent regions of the display panel 210 corresponding to the first regions 11a and 11b and the second regions 12a and 12b shown in
According to an embodiment, the pixels included in the first region 211 and the second region 212 may include a plurality of subpixels 21_1 to 21_n and 22_1 to 22_n, respectively. Each of the subpixels 21_1 to 21_n and 22_1 to 22_n may be, for example, one of a red subpixel, a green subpixel, and a blue subpixel.
In one embodiment, one pixel may have an RGB stripe layout structure including one red subpixel, one green subpixel, and one blue subpixel. In another embodiment, one pixel may have a pentile layout structure including a red subpixel and a green subpixel, or a green subpixel and a blue subpixel.
According to an embodiment, the subpixels 21_1 to 21_n disposed in the first region 211 may be referred to as the first group subpixels 21_1 to 21_n, and the subpixels 22_1 to 22_n disposed in the second region 212 may be referred to as the second group subpixels 22_1 to 22_n.
According to an embodiment, each of the subpixels 21_1 to 21_n and 22_1 to 22_n included in the first group subpixels 21_1 to 21_n and the second group subpixels 22_1 to 22_n may be electrically connected to converters included in the converter group 220. According to an embodiment, each of the subpixels 21_1 to 21_n and 22_1 to 22_n may be selectively connected to the second group gamma circuit 240. According to an embodiment, the selective connection between the subpixels 21_1 to 21_n and 22_1 to 22_n and the second group gamma circuit 240 may be implemented by turning on or off the second group switches 241_1 to 241_n.
The converter group 220 may include a plurality of converters. The converters may be electrically connected to the subpixels 21_1 to 21_n and 22_1 to 22_n, respectively and transfer image data received from the controller 250 to the subpixels 21_1 to 21_n and 22_1 to 22_n. The subpixels 21_1 to 21_n and 22_1 to 22_n may display a screen corresponding to the image data on the display 101 by emitting light corresponding to the image data.
According to an embodiment, the converter group 220 may convert the image data received from the controller 250 from a digital signal to an analog signal. The analog signal may be, for example, a source voltage value transferred to the subpixels 21_1 to 21_n and 22_1 to 22_n.
According to an embodiment, the converter group 220 may be electrically connected to the first group gamma circuit 230. For example, each of the converters included in the converter group 220 may be selectively connected to the first group gamma circuit 230. According to an embodiment, the selective connection between the converters and the first group gamma circuit 230 may be implemented by turning on or off the first group switches 231_1 to 231_n.
The first group gamma circuit 230 may be selectively connected to the converter group 220 and apply a first grayscale voltage to the converter group 220. The first grayscale voltage may be combined with image data converted into an analog signal by the converter group 220, and be transferred to the subpixels 21_1 to 21_n and 22_1 to 22_n disposed on the display panel 210. In other words, it can be understood that the first grayscale voltage is transferred to the subpixels 21_1 to 21_n and 22_1 to 22_n through a converter.
According to an embodiment, the first group gamma circuit 230 may apply the first grayscale voltage whose intensity is determined by a plurality of binary bits to the converter group 220. The plurality of binary bits may be, for example, eight binary bits, and in this case, the first grayscale voltage may have 256 different intensities. According to another embodiment, the plurality of binary bits may be, for example, four binary bits, and in this case, the first grayscale voltage may have 128 different intensities. According to still another embodiment, the plurality of binary bits may be, for example, 10, 12 or more binary bits. In this case, the intensity of the first grayscale voltage may have various values as many as the power of 2 corresponding to the number of binary bits. For example, in the case of 10 binary bits, the first grayscale voltage may have 1024 different intensities.
According to an embodiment, the first group gamma circuit 230 may be configured to apply the first grayscale voltage to at least some of a plurality of converters included in the converter group 220. For example, the first group gamma circuit 230 may be configured to apply the first grayscale voltage to at least some of converters electrically connected to the first group subpixels 21_1 to 21_n. For another example, the first group gamma circuit 230 may be configured to apply the first grayscale voltage to all of the converters electrically connected to the first group subpixels 21_1 to 21_n.
According to an embodiment, the first group gamma circuit 230 may include a plurality of gamma amplifiers. The gamma amplifier may generate first grayscale voltages having various magnitudes.
The second group gamma circuit 240 may be selectively connected to the subpixels 21_1 to 21_n and 22_1 to 22_n included in the first group subpixels 21_1 to 21_n and the second group subpixels 22_1 to 22_n and apply a second grayscale voltage to the subpixels 21_1 to 21_n and 22_1 to 22_n. In one embodiment, the second grayscale voltage may be understood to be combined with image data converted to an analog signal by the converter group 220.
According to an embodiment, the second group gamma circuit 240 may apply the second grayscale voltage whose intensity is determined by a single binary bit to the converter group 220. In this case, the second grayscale voltage may have two different intensities. For example, the second group gamma circuit 240 may include an inverter. The inverter may generate second grayscale voltages having two different intensities.
According to an embodiment, the second group gamma circuit 240 may be configured to apply the second grayscale voltage to the second group subpixels 22_1 to 22_n. In one embodiment, the second group gamma circuit 240 may be configured to apply the second grayscale voltage to the second group subpixels 22_1 to 22_n and at least some of the first group subpixels 21_1 to 21_n. For example, it may be configured to apply the first grayscale voltage to at least some of the first group subpixels 21_1 to 21_n by the first group gamma circuit 230. The second group gamma circuit 240 may be configured to apply the second grayscale voltage to the remaining subpixels except at least some of the first group subpixels 21_1 to 21_n.
According to an embodiment, the first group gamma circuit 230 may be configured to apply the first grayscale voltage to the second group subpixels 22_1 to 22_n in place of the second group gamma circuit 240.
According to an embodiment, it may be configured to apply the second grayscale voltage to the first group subpixels 21_1 to 21_n to which the first grayscale voltage is applied, after a specified time has elapsed. For example, the first group gamma circuit 230 may be connected to at least some converters during the specified time. The first grayscale voltage may be applied to some of the first group subpixels 21_1 to 21_n connected to the at least some converters during the specified time. When the specified time has elapsed, the second group gamma circuit 240 and some of the first group subpixels 21_1 to 21_n may be connected such that the second grayscale voltage is applied to the first group subpixels 21_1 to 21_n connected to the at least some converters, instead of the first grayscale voltage.
According to an embodiment, the specified time may be variously set. For example, the specified time may be set to a fixed time by a timer function of the controller 250. For another example, the specified time may be set to a variable time through a sensor that detects the user's condition. For example, the specified time may be set to a time when the user looks at the electronic device 100 through a sensor that detects the user's gaze or a sensor that detects a posture of the electronic device 100. For another example, the specified time may be set to a variable time according to content output to a first region, ambient brightness of the electronic device 100, or the like.
According to an embodiment, when a change in content output to the display 101 occurs, the first grayscale voltage may be applied again to some of the first group subpixels 21_1 to 21_n to which the second grayscale voltage is applied. For example, new image data different from existing image data may be received from an external processor. In this case, in response to the reception of the new image data, some converters connected to some of the first group subpixels 21_1 to 21_n to which the second grayscale voltage is applied may be connected to the first group gamma circuit 230. In this case, the first grayscale voltage may be applied to some of the first group subpixels 21_1 to 21_n, instead of the second grayscale voltage.
The controller 250 may be electrically connected to the converter group 220, the first group gamma circuit 230, and the second group gamma circuit 240. According to an embodiment, the controller 250 may be configured to control connections between the first group gamma circuit 230 and converters in the converter group 220 and connections between the second group gamma circuit 240 and the subpixels 21_1 to 21_n and 22_1 to 22_n. For example, the controller 250 may control connections between the first group gamma circuit 230 and the converters and connections between the second group gamma circuit 240 and the subpixels 21_1 to 21_n and 22_1 to 22_n by controlling the first group switches 231_1 to 231_n and the second group switches 241_1 to 241_n.
According to an embodiment, the controller 250 may control the first group switches 231_1 to 231_n and the second group switches 241_1 to 241_n to selectively apply one of the first grayscale voltage and the second grayscale voltage to one of the subpixels. For example, the subpixels 21_1 to 21_n and 22_1 to 22_n may include an arbitrary first subpixel. The controller 250 may perform control such that the connection between the converter connected to the first subpixel and the first group gamma circuit 230 and the connection between the first subpixel and the second group gamma circuit 240 are selectively made.
According to an embodiment, the controller 250 may be configured to apply the first grayscale voltage to the first group subpixels 21_1 to 21_n during a first time, and apply the second grayscale voltage to the second group subpixels 22_1 to 22_n during a second time different from the first time. For example, the controller 250 may connect the first group gamma circuit 230 with at least some converters such that the first group gamma circuit 230 applies the first grayscale voltage to the at least some converters of the converter group 220 during the first time. The controller 250 may connect the second group gamma circuit 240 with the second group subpixels 22_1 to 22_n such that the second group gamma circuit 240 applies the second grayscale voltage to the second group subpixels 22_1 to 22_n during the second time.
According to an embodiment, the controller 250 may control the first group switches 231_1 to 231_n and the second group switches 241_1 to 241_n during the first time and the second time. For example, the controller 250 may turn on the first group switches 231_1 to 231_n and turn off the second group switches 241_1 to 241_n during the first time. For another example, the controller 250 may turn off the first group switches 231_1 to 231_n and turn on the second group switches 241_1 to 241_n during the second time.
According to an embodiment, the controller 250 may connect the first group gamma circuit 230 with at least some converters such that the first group gamma circuit 230 applies the first grayscale voltage to the at least some converters of the converter group 220. For example, the controller 250 may connect the first group gamma circuit 230 with all or some of a plurality of converters included in the converter group 220.
Through this, the first grayscale voltage may be applied to at least some of the first group subpixels 21_1 to 21_n, and specified content displayed by the first group subpixels 21_1 to 21_n may secure an image quality of a specified level or higher.
According to an embodiment, the controller 250 may connect the second group gamma circuit 240 to the second group subpixels 22_1 to 22_n such that the second group gamma circuit 240 applies the second grayscale voltage with the second group subpixels 22_1 to 22_n.
Through this, the second grayscale voltage may be applied to the second group subpixels 22_1 to 22_n, and power consumption may be reduced below a specified level in the second group subpixels 22_1 to 22_n.
According to an embodiment, the controller 250 may connect the second group gamma circuit 240 to at least some of the first group subpixels 21_1 to 21_n such that the second group gamma circuit 240 applies the second grayscale voltage with at least some of the first group subpixels 21_1 to 21_n. For example, it may be configured to apply the first grayscale voltage to at least some of the first group subpixels 21_1 to 21_n and the controller 250 may connect the second group gamma circuit 240 with the remaining subpixels to apply the second grayscale voltage to the remaining subpixels except the at least some of the first group subpixels 21_1 to 21_n.
Accordingly, the second grayscale voltage may be applied to some of the first group subpixels 21_1 to 21_n, and power consumption may be reduced below a specified level in some of the first group subpixels 21_1 to 21_n.
According to an embodiment, the controller 250 may receive image data from an external processor of the display 101. The external processor may be, for example, an application processor that may be included in the electronic device 100. In one embodiment, the application processor may transmit the image data to the controller 250 in the display 101 for the AOD mode and switch an operation mode to an inactive mode or sleep mode. In one embodiment, the controller 250 may transmit the received image data to the converter group 220.
In the disclosure, the contents described with reference to
Referring to
According to various embodiments, the display 101a is shown in
The display panel 211 for the first region may include a plurality of gate lines and a plurality of source lines. In one embodiment, the plurality of gate lines and the plurality of source lines may intersect each other. The subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 may be disposed at intersection points of the gate lines and the source lines. The subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 may constitute first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6. According to an embodiment, in the RGB stripe layout structure type, three subpixels (e.g., the subpixels 21_1, 21_2, and 21_3 of RGB) may constitute one pixel.
According to an embodiment, a gate voltage may be sequentially applied to the plurality of gate lines by a gate driver. For example, the gate driver may apply the gate voltage to an (n+1)-th gate line after applying the gate voltage to an n-th gate line. For another example, the gate driver may apply the gate voltage to the n-th gate line after applying the gate voltage to the (n+1)-th gate line.
In one embodiment, when the gate voltage is applied to the gate line, the same gate voltage may be applied to a plurality of subpixels (e.g., subpixels 21_1, 21_2, and 21_3 included in the n-th gate line) connected to the gate line, at the same time point.
According to an embodiment, the plurality of subpixels to which the gate voltage is applied (e.g., subpixels 21_1, 21_2, and 21_3 included in the n-th gate line) may emit light with a specified brightness based on the magnitude of the source voltage applied to the subpixels. In other words, the subpixels may emit light with the specified brightness based on the magnitude of the source voltage applied at the time point at which the gate voltage is applied. According to an embodiment, the source voltage may be image data converted from a digital signal to an analog signal.
According to an embodiment, the source voltage may be sequentially applied to the plurality of source lines by a source driver. For example, the source driver may sequentially apply the source voltage to subpixels 21_1, 21_2, and 21_3 constituting the n-th gate line during a time when the gate voltage is applied to the n-th gate line. The subpixels may emit light based on the applied source voltage. The source driver may include, for example, the source amplifier group 260a, the converter group 220a, and the gamma block 300a.
According to an embodiment, in each of the source lines, red subpixels 21_1 and 21_4 may be disposed, green subpixels 21_2 and 21_5 may be disposed, or blue subpixels 21_3 and 21_6 may be disposed. The source line on which the red subpixels 21_1 and 21_4 are disposed may be connected to a red source amplifier 261a, the source line on which the green subpixels 21_2 and 21_5 are disposed may be connected to a green source amplifier 262a, and the source line on which the blue subpixels 21_3 and 21_6 are disposed may be connected to a blue source amplifier 263a.
The source amplifier group 260a may include a plurality of source amplifiers 261a, 262a, and 263a. For example, the source amplifier group 260a may include the red source amplifier 261a, the green source amplifier 262a, and the blue source amplifier 263a. According to an embodiment, switches 331a, 332a, and 333a may be disposed at output terminals of the plurality of source amplifiers 261a, 262a, and 263a. The plurality of source amplifiers 261a, 262a, and 263a may sequentially apply a source voltage to the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 by the switches 331a, 332a, and 333a.
The converter group 220a may include a plurality of converters 221a, 222a, and 223a. According to an embodiment, the plurality of converters 221a, 222a, and 223a may be electrically connected to the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 through the plurality of source amplifiers 261a, 262a, and 263a. According to an embodiment, the converter group 220a may convert image data transmitted from the controller 250 from a digital signal to an analog signal.
According to an embodiment, the plurality of converters 221a, 222a, and 223a included in the converter group 220a may be selectively connected to a first group gamma circuit 230a included in the gamma block 300a. In one embodiment, a first grayscale voltage may be applied from at least a part of the first group gamma circuit 230a to at least some of the plurality of converters 221a, 222a, and 223a. The applied first grayscale voltage may be combined with the image data which is converted.
The controller 250 may receive image data from an external processor and transmit the image data to the converter group 220a. The image data may include data for outputting specified content to the display panel 211 for the first region.
According to an embodiment, the controller 250 may control operations of the gate driver and the source driver. For example, the controller 250 may control turning-on or -off of switches (e.g., 331a, 281a, 291a, 321a, and 324a) included in the source amplifier group 260a and the gamma block 300a.
The gamma block 300a may generate an analog gamma value (e.g., grayscale voltage) related to the color of each of the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6. In one embodiment, the gamma block 300a may include a digital gamma block 310a and an analog gamma block 320a.
The digital gamma block 310a may include a red gamma register 311a, a green gamma register 312a, and a blue gamma register 313a. Each of the gamma control registers 311a, 312a, and 313a may transmit a gamma setting value corresponding to corresponding subpixels to the analog gamma block.
The analog gamma block 320a may include gamma adjustment circuits 271a, 272a, and 271a, the first group gamma circuit 230a, and a second group gamma circuit 240a. The analog gamma block 320a may generate a grayscale voltage (e.g., a first grayscale voltage or a second grayscale voltage) based on the gamma setting value received from the digital gamma block 310a. The generated grayscale voltage may be transmitted to the converter group 220a or the output terminal of the source amplifier group 260a.
According to one embodiment, the gamma adjustment circuits 271a, 272a, and 273a may include the red gamma adjustment circuit 271a, the green gamma adjustment circuit 272a, and the blue gamma adjustment circuit 273a based on the colors of the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6. Each of the gamma adjustment circuits 271a, 272a, and 273a may generate a gamma reference voltage based on the gamma setting values received from the gamma control registers 311a, 312a, and 313a. In one embodiment, the gamma reference voltage may have various values according to the gamma setting value. In various embodiments, the generated gamma reference voltage may be transmitted to the first group gamma circuit 230a or the second group gamma circuit 240a.
According to one embodiment, the gamma adjustment circuits 271a, 272a, and 273a may be electrically connected to the first group gamma circuit 230a through the first reference switches 321a, 322a, and 323a, and be electrically connected to the second group gamma circuit 240a through the second reference switches 324a, 325a, and 326a.
According to an embodiment, as shown in
According to another embodiment, unlike
According to an embodiment, the first group gamma circuit 230a may generate a plurality of first grayscale voltages based on the received gamma reference voltage. The intensity of the first grayscale voltage may have different values based on a plurality of binary bits. For example, the first grayscale voltage may include 256 different grayscale voltages based on eight binary bits. The intensity of the first grayscale voltage may be controlled by the controller 250.
According to various embodiments, the number of the plurality of binary bits may vary. For example, the number of the plurality of binary bits may be four, and in this case, the first grayscale voltage may include grayscale voltages having 16 different intensities.
According to an embodiment, the first switches 281a, 282a, and 283a may be included at the output terminal of the first group gamma circuit 230a. The first switches 281a, 282a, and 283a may be, for example, the first group switches 231_1 to 231_n shown in
According to an embodiment, when image data is transmitted to the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6, all of the first switches 281a, 282a, and 283a may be turned on. In this case, all of the first grayscale voltages generated by the first group gamma circuit 230a may be transmitted to the converter group 220a, and may be applied to the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 through the source amplifier group 260a.
According to an embodiment, the second group gamma circuit 240a may generate a plurality of second grayscale voltages based on the gamma reference voltages received from the gamma adjustment circuits 271a, 272a, and 273a. The intensity of the second grayscale voltage may have different values based on a single binary bit. The intensity of the second grayscale voltage may be controlled by the controller 250.
According to an embodiment, the second switches 291a, 292a, and 293a may be included at the output terminal of the second group gamma circuit 240a. The second switches 291a, 292a, and 293a may be, for example, the second group switches 241_1 to 241_n shown in
According to an embodiment, when image data is transmitted to the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6, all of the second switches 291a, 292a, and 293a may be turned off. In this case, the second grayscale voltage generated by the second group gamma circuit 240a may not be applied to the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6.
According to an embodiment, output values of the first gamma circuits 231a, 232a, and 233a included in the first group gamma circuit 230a may be shared with each other. For example, a sharing switch may be additionally provided, which allows the output voltages to be shared between the output terminal of the first red gamma circuit 231a, the output terminal of the first green gamma circuit 232a, and the output terminal of the first blue gamma circuit 233a. In this case, for example, a output value of the first red gamma circuit 231a may be connected to the output terminal of the first green gamma circuit 232a or the output terminal of the first blue gamma circuit 233a by the sharing switch, and the output value of the first red gamma circuit 231a may be transmitted to the green subpixels 21_2 and 21_5 or the blue subpixels 21_3 and 21_6. In this case, the first switch 282a or 283a or the first reference switch 322a or 323a connected to the first green gamma circuit 232a or the first blue gamma circuit 233a may be turned off. As a result, a first grayscale voltage may be applied to the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 included in the display panel 211 of the first region. The first grayscale voltage may have more various intensities than the second grayscale voltage, and the intensity of light emitted from the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 may be more precisely adjusted. Because specified content may be output to the first region, the specified content may be output with a relatively higher image quality.
Referring to
According to an embodiment, as shown in
According to another embodiment, as shown in
According to an embodiment, when image data is transmitted to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6, all of the first switches 281b, 282b, and 283b may be turned off. In this case, the first grayscale voltage generated by the first group gamma circuit 230b may not be transmitted to the converter group 220b, and not be also applied to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6.
According to an embodiment, when image data is transmitted to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6, all of the second switches 291b, 292b, and 293b may be turned on. In this case, the second grayscale voltage generated by the second group gamma circuit 240b may be applied to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6.
According to an embodiment, output values of the second gamma circuits 241b, 242b, and 243b included in the second group gamma circuit 240b may be shared with each other. For example, a sharing switch may be additionally provided, which allows the output voltages to be shared between the output terminal of the second red gamma circuit 241b, the output terminal of the second green gamma circuit 242b, and the output terminal of the second green gamma circuit 243b. In this case, for example, an output value of the second red gamma circuit 241b may be connected to the output terminal of the second green gamma circuit 242b or the output terminal of the second blue gamma circuit 243b by the sharing switch and an output value of the second red gamma circuit 241b may be transmitted to the green subpixels 22_2 and 22_5 or the blue subpixels 22_3 and 22_6. In this case, the second switch 292b or 293b or the second reference switch 325b or 326b connected to the second green gamma circuit 242b or the second blue gamma circuit 243b may be turned off.
According to an embodiment, when a specified source voltage is applied to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6, all or some of the plurality of source amplifiers 261b, 262b, and 263b may be turned off. In one embodiment, all or some of switches 331b, 332b, and 333b disposed at the output terminals of the plurality of source amplifiers 261b, 262b, and 263b may also be turned off. In this case, image data is not transmitted to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6, and only the second grayscale voltage may be applied to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6 to express a specified color.
As a result, the second grayscale voltage may be applied to the second group subpixels 22_1, 22_2, 22_3, 22_4, 22_5, and 22_6 included in the display panel 212 of the second region. Because the second grayscale voltage may have a less number of intensities than the first grayscale voltage, the second group gamma circuit 240b that generates the second grayscale voltage may consume less power than the first group gamma circuit 230b. When outputting a screen of the second region, the display 101b may reduce power consumption by using the second group gamma circuit 240b. According to an embodiment, as mentioned above, all or some of the switches 331b, 332b, and 333b disposed at the output terminals of the plurality of source amplifiers 261b, 262b, and 263b may be turned off, and in this case, power consumed by the display 101b may be further reduced.
Referring to
According to an embodiment, the image data may be sequentially transferred to subpixels (e.g., the subpixels 21_1 to 21_n and 22_1 to 22_n of
A vertical synchronization graph 410 may represent a vertical synchronization signal that synchronizes outputs from the top to the bottom of the display. According to an embodiment, the image data may be output as one frame on the display every period of the vertical synchronization signal.
A horizontal synchronization graph 420 may represent a horizontal synchronization signal that synchronizes outputs for one horizontal line of the display. The image data may be transferred to subpixels included in one gate line of the display every period of the horizontal synchronization signal. According to an embodiment, one period of the vertical synchronization signal may include a plurality of periods of the horizontal synchronization signal. Therefore, the image data may be sequentially output for each gate line based on the vertical synchronization signal during the time when the vertical synchronization signal is activated.
For example, referring to
Gate graphs 451, 452, and 453 may represent gate lines that are activated based on the horizontal synchronization signal. For example, referring to the gate graphs 451, 452, and 453, it can be seen that the first gate line to the N-th gate line are sequentially activated. According to an embodiment, when the first gate line is activated, a source voltage may be applied to subpixels included in the first gate line, and when the N-th gate line is activated, a source voltage may be applied to subpixels included in the N-th gate line.
First gamma circuit graphs 431, 432, and 433 may indicate whether a first red gamma circuit (e.g., the first red gamma circuit 231a of
For example, while the second regions 12a and 12b are output in
According to one embodiment, a controller (e.g., the controller 250 of
A display power mode graph 460 may represent a change in a method in which a grayscale voltage is applied to the display with elapse of time. In one embodiment, a first mode may indicate a case in which the first grayscale voltage is applied to the subpixels by the first gamma circuit. A second mode may indicate a case in which the second grayscale voltage is applied to the subpixels by the second gamma circuit. According to an embodiment, the second mode may have a relatively small amount of power consumption compared to the first mode.
Referring to
According to an embodiment, the first region 51a and the second regions 52a and 52b may be divided by a virtual line parallel to the gate line. The gate line may be a line composed of a plurality of subpixels to which a gate voltage is applied at the same time.
According to various embodiments, the gate line may be parallel to a transversal line of the electronic device as shown in
According to an embodiment, a display (e.g., the display 101 of
According to an embodiment, the gate voltage may be sequentially applied in a direction from gate lines included in the second region 52a to gate lines included in the first region 51a. In this case, it may be configured that the specified content may not be output to subpixels included in at least one gate line adjacent to the second region 52a among the gate lines included in the first region 51a.
For example, in the display screen 510 shown in
Referring to
In outputting the first region 51a using the first gamma circuit, when specified content having various colors is output after outputting the third region 53a including a single color screen, as shown in
Referring to
According to an embodiment, a first grayscale voltage may be applied to some of subpixels disposed in the at least one of the first regions 61a and 61b, and a second grayscale voltage may be applied to the other some thereof. For example, subpixels disposed in the first regions 61a and 61b may include a red subpixel, a green subpixel, and a blue subpixel. The first grayscale voltage may be applied to the red subpixel and the green subpixel of the subpixels, and a second grayscale voltage may be applied to the blue subpixel. For another example, the first grayscale voltage may be applied to the red subpixel of the subpixels, and the second grayscale voltage may be applied to the green subpixel and the blue subpixel. According to various embodiments, the subpixel to which the first grayscale voltage is applied and the subpixel to which the second grayscale voltage is applied may be grouped in various combinations and are not limited to the above embodiment.
Hereinafter, in the description with reference to
Referring to
Referring to the first enlarged view 610b and the second enlarged view 610c, regions in which the first content 60a is output may include a main region 611b or 611c, a sub region 612b or 612c, and a background region 613b or 613c. The main region 611b or 611c may be understood as a region in which a specified color of the first content 60a is output. The background region 613b or 613c may be a portion of the first region 61a, in which the first content 60a is not output and a single specified color (e.g., black) is output. The sub region 612b or 612c may be a region for expressing a soft and natural boundary by outputting an intermediate color between the main region 611b or 611c and the background region 613b or 613c.
According to an embodiment, RGB values R, G, and B of the first main region 611b of the first enlarged view 610b may be (Rm1, Gm1, Bm1), and RGB values for the first sub region 612b may be (Rs1, Gs1, Bs1). RGB values for the second main region 611c of the second enlarged view 610c may be (Rm2, Gm2, Bm2) and RGB values for the second sub region 612c may be (Rs2, Gs2, Bs2).
According to an embodiment, because colors represented by the first main region 611b and the second main region 611c are the same, Rm1 and Rm2 may have the same value, Gm1 and Gm2 may have the same value, and Bm1 and Bm2 may have the same value.
According to an embodiment, a color represented by the first main region 611b and a color represented by the first sub region 612b may be different. Therefore, Rm1 and Rs1 may have different values, Gm1 and Gs1 may have different values, and Bm1 and Bs1 may also have different values.
According to an embodiment, a color represented by the second main region 611c and a color represented by the second sub region 612c may be different. However, the second grayscale voltage is applied to the blue subpixel in the second enlarged view 610c, and therefore, the blue value may be fixed to a single value. Therefore, Bm2 and Bs2 may have the same value, Rm2 and Rs2 may have different values, and Gm2 and Gs2 may also have different values.
According to an embodiment, a color represented by the second sub region 612c may be set to be similar to a color represented by the first sub region 612b. For example, values of (Rs2, Gs2, Bs2) may be set such that a color represented by (Rs2, Gs2, Bs2) for the second sub region 612c is similar to a color represented by (Rs1, Gs1, Bs1) for the first sub region 612b. For example, RGB values for each of the sub regions may be converted into YUV domains. In one embodiment, a Y value of the first sub region 612b and a Y value of the second sub region 612c may be set to be equal to each other.
According to an embodiment, the RGB values for the second sub region 612c may be determined based on RGB values for the second main region 611c and RGB values for the first sub region 612b. For example, among RGB values for the second sub region 612c, a value for a subpixel to which the second grayscale voltage is applied may be determined as RGB values for the second main region 611c, and a value for a subpixel to which the first grayscale voltage is applied may be determined by a specified equation based on the RGB values for the second main region 611c and the RGB values for the first sub region 612b.
In one embodiment, the value of Bs2 may be set to the value of Bm2 as mentioned above. According to one embodiment, the value of Rs2 and the value of Gs2 may be set by the specified equation based on the RGB values (Rs1, Gs1, Bs1) for the first sub region 612b and the fixed value of Bs2 for the second sub region 612c. For example, Rs2 may be set to Rs1−(Bs2−Bs1)/6, and Gs2 may be set to Gs1−(Bs2−Bs1)/12. According to an embodiment, the specified equation is not limited to the above-mentioned embodiment and may be variously set.
When the first grayscale voltage and the second grayscale voltage are applied to the second sub region 612c according to the determined values of (Rs2, Gs2, Bs2), the first content 60a may be output similarly to a case where only the first grayscale voltage is applied and may accomplish further reduction in power consumption, compared to a case where only the first grayscale voltage is applied.
Referring to
The display 101c shown in
According to an embodiment, a first group gamma circuit 230c may apply the first grayscale voltage to at least some of converters of the converter group 220c. For example, the controller 250 may connect the first group gamma circuit 230c with the at least some converters. For example, the controller 250 may connects a converter 221c electrically connected to the red subpixels 21_1 and 21_4 with a first red gamma circuit 231c of the first group gamma circuit 230c, and connect a converter 223c electrically connected to the blue subpixel 21_3 and 21_6 with a first blue gamma circuit 233c.
In this case, the second grayscale voltage may be applied to subpixels connected to the remaining converters except the at least some converters. For example, the controller may connect a second group gamma circuit 240c with the subpixels connected to the remaining converters. For example, the controller 250 may connect the green subpixels 21_2 and 21_5 with a second green gamma circuit 242c.
According to an embodiment, when the second grayscale voltage is applied to the at least some subpixels, all or some of source amplifiers connected to the subpixels may be turned off. In one embodiment, all or some of switches disposed at output terminals of the source amplifiers may also be turned off. For example, when the second grayscale voltage is applied to the green subpixels 21_2 and 21_5, a green source amplifier 262c may be turned off and a switch 332c disposed at an output terminal of the green source amplifier 262c may also be turned off. In this case, image data is not transmitted to the green subpixels 21_2 and 21_5, and only the second grayscale voltage may be applied to the green subpixels 21_2 and 21_5 to express a specified color.
Through this, the second grayscale voltage may be applied to one subpixel of the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 included in the first region, for example, the green subpixels 21_2 and 21_5 and the first grayscale voltage may be applied to the remaining subpixels 21_1, 21_3, 21_4, and 21_6. Although not shown in
In this case, power consumption in the display 101c may be relatively reduced compared to a case where the first grayscale voltage is applied to all of the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6. According to an embodiment, as described above, the source amplifier 262c and the switch 332c disposed at the output terminal of the source amplifier 262c may be turned off, and in this case, power consumption in the display 101c may be further reduced.
Referring to
Similarly to
In display power mode graph 760, a third mode may represent a case in which a part of the first group gamma circuit is deactivated and a part of the second group gamma circuit corresponding to the deactivated first group gamma circuit is activated.
According to an embodiment, the display may be configured to switch the operation mode between the first mode, the second mode, and the third mode. According to an embodiment, the third mode may have a relatively small amount of power consumption compared to the first mode, and may express content of a higher image quality than the second mode, on the display.
Referring to
The display 101d shown in
According to an embodiment, a first group gamma circuit 230d may apply the first grayscale voltage to at least some of converters of the converter group 220d. For example, the controller 250 may connect the first group gamma circuit 230d with the at least some converters. For example, the controller 250 may connect a converter 221d electrically connected to the red subpixels 21_1 and 21_4 with a first red gamma circuit 281d of the first group gamma circuit 230d.
In this case, the second grayscale voltage may be applied to subpixels connected to the remaining converters except the at least some converters. For example, the controller 250 may connect a second group gamma circuit 240d with subpixels connected to remaining converters 222d and 223d. For example, the controller 250 may connect the green subpixels 21_2 and 21_5 with a second green gamma circuit 242d and the blue subpixels 21_3 and 21_6 with a second blue gamma circuit 243d.
According to an embodiment, when the second grayscale voltage is applied to the at least some subpixels, all or some of source amplifiers connected to the subpixels may be turned off. In one embodiment, all or some of switches disposed at output terminals of the source amplifiers may also be turned off. For example, when the second grayscale voltage is applied to the green subpixels 21_2 and 21_5 and the blue subpixels 21_3 and 21_6, a green source amplifier 262d and a blue source amplifier 263d may be turned off. The switches 332d and 333d disposed at the output terminals of the green source amplifier 262d and the blue source amplifier 263d may also be turned off. In this case, image data is not transmitted to the green subpixels 21_2 and 21_5 and the blue subpixels 21_3 and 21_6, and only the second grayscale voltage may be applied to the green subpixels 21_2 and 21_5 and the blue subpixels 21_3 and 21_6 to express a specified color.
Through this, the second grayscale voltage may be applied to two subpixels among the subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6 included in the first region, for example, the green subpixels 21_2 and 21_5 and the blue subpixels 21_3 and 21_6 and the first grayscale voltage may be applied to the red subpixels 21_1 and 21_4. Although not shown in
In this case, power consumption in the display 101d may be relatively reduced compared to a case where the first grayscale voltage is applied to all of the first group subpixels 21_1, 21_2, 21_3, 21_4, 21_5, and 21_6. According to an embodiment, as described above, the source amplifiers 262d and 263d and the switches 332d and 333d disposed at the output terminals of the source amplifiers 262d and 263d may be turned off, and in this case, power consumption in the display 101d may be further reduced.
Referring to
Similarly to
Referring to
The processor 920 may operate, for example, software (e.g., a program 940) to control at least one of other components (e.g., a hardware or software component) of the electronic device 901 connected to the processor 920 and may process and compute a variety of data. The processor 920 may load a command set or data, which is received from other components (e.g., the sensor module 976 or the communication module 990), into a volatile memory 932, may process the loaded command or data, and may store result data into a nonvolatile memory 934. According to an embodiment, the processor 920 may include a main processor 921 (e.g., a central processing unit or an application processor) and an auxiliary processor 923 (e.g., a graphic processing device, an image signal processor, a sensor hub processor, or a communication processor), which operates independently from the main processor 921, additionally or alternatively uses less power than the main processor 921, or is specified to a designated function. In this case, the auxiliary processor 923 may operate separately from the main processor 921 or embedded.
In this case, the auxiliary processor 923 may control, for example, at least some of functions or states associated with at least one component (e.g., the display device 960, the sensor module 976, or the communication module 990) among the components of the electronic device 901 instead of the main processor 921 while the main processor 921 is in an inactive (e.g., sleep) state or together with the main processor 921 while the main processor 921 is in an active (e.g., an application execution) state. According to an embodiment, the auxiliary processor 923 (e.g., the image signal processor or the communication processor) may be implemented as a part of another component (e.g., the camera module 980 or the communication module 990) that is functionally related to the auxiliary processor 923. The memory 930 may store a variety of data used by at least one component (e.g., the processor 920 or the sensor module 976) of the electronic device 901, for example, software (e.g., the program 940) and input data or output data with respect to commands associated with the software. The memory 930 may include the volatile memory 932 or the nonvolatile memory 934.
The program 940 may be stored in the memory 930 as software and may include, for example, an operating system 942, a middleware 944, or an application 946.
The input device 950 may be a device for receiving a command or data, which is used for a component (e.g., the processor 920) of the electronic device 901, from an outside (e.g., a user) of the electronic device 901 and may include, for example, a microphone, a mouse, or a keyboard.
The sound output device 955 may be a device for outputting a sound signal to the outside of the electronic device 901 and may include, for example, a speaker used for general purposes, such as multimedia play or recordings play, and a receiver used only for receiving calls. According to an embodiment, the receiver and the speaker may be either integrally or separately implemented.
The display device 960 may be a device for visually presenting information to the user of the electronic device 901 and may include, for example, a display, a hologram device, or a projector and a control circuit for controlling a corresponding device. According to an embodiment, the display device 960 may include a touch circuitry or a pressure sensor for measuring an intensity of pressure on the touch.
The audio module 970 may convert a sound and an electrical signal in dual directions. According to an embodiment, the audio module 970 may obtain the sound through the input device 950 or may output the sound through an external electronic device (e.g., the electronic device 902 (e.g., a speaker or a headphone)) wired or wirelessly connected to the sound output device 955 or the electronic device 901.
The sensor module 976 may generate an electrical signal or a data value corresponding to an operating state (e.g., power or temperature) inside or an environmental state outside the electronic device 901. The sensor module 976 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.
The interface 977 may support a designated protocol wired or wirelessly connected to the external electronic device (e.g., the electronic device 902). According to an embodiment, the interface 977 may include, for example, an HDMI (high-definition multimedia interface), a USB (universal serial bus) interface, an SD card interface, or an audio interface.
A connecting terminal 978 may include a connector that physically connects the electronic device 901 to the external electronic device (e.g., the electronic device 902), for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).
The haptic module 979 may convert an electrical signal to a mechanical stimulation (e.g., vibration or movement) or an electrical stimulation perceived by the user through tactile or kinesthetic sensations. The haptic module 979 may include, for example, a motor, a piezoelectric element, or an electric stimulator.
The camera module 980 may shoot a still image or a video image. According to an embodiment, the camera module 980 may include, for example, at least one lens, an image sensor, an image signal processor, or a flash.
The power management module 988 may be a module for managing power supplied to the electronic device 901 and may serve as at least a part of a power management integrated circuit (PMIC).
The battery 989 may be a device for supplying power to at least one component of the electronic device 901 and may include, for example, a non-rechargeable (primary) battery, a rechargeable (secondary) battery, or a fuel cell.
The communication module 990 may establish a wired or wireless communication channel between the electronic device 901 and the external electronic device (e.g., the electronic device 902, the electronic device 904, or the server 908) and support communication execution through the established communication channel. The communication module 990 may include at least one communication processor operating independently from the processor 920 (e.g., the application processor) and supporting the wired communication or the wireless communication. According to an embodiment, the communication module 990 may include a wireless communication module 992 (e.g., a cellular communication module, a short-range wireless communication module, or a GNSS (global navigation satellite system) communication module) or a wired communication module 994 (e.g., an LAN (local area network) communication module or a power line communication module) and may communicate with the external electronic device using a corresponding communication module among them through the first network 998 (e.g., the short-range communication network such as a Bluetooth, a WiFi direct, or an IrDA (infrared data association)) or the second network 999 (e.g., the long-distance wireless communication network such as a cellular network, an internet, or a computer network (e.g., LAN or WAN)). The above-mentioned various communication modules 990 may be implemented into one chip or into separate chips, respectively.
According to an embodiment, the wireless communication module 992 may identify and authenticate the electronic device 901 using user information stored in the subscriber identification module 996 in the communication network.
The antenna module 997 may include one or more antennas to transmit or receive the signal or power to or from an external source. According to an embodiment, the communication module 990 (e.g., the wireless communication module 992) may transmit or receive the signal to or from the external electronic device through the antenna suitable for the communication method.
Some components among the components may be connected to each other through a communication method (e.g., a bus, a GPIO (general purpose input/output), an SPI (serial peripheral interface), or an MIPI (mobile industry processor interface)) used between peripheral devices to exchange signals (e.g., a command or data) with each other.
According to an embodiment, the command or data may be transmitted or received between the electronic device 901 and the external electronic device 904 through the server 908 connected to the second network 999. Each of the electronic devices 902 and 904 may be the same or different types as or from the electronic device 901. According to an embodiment, all or some of the operations performed by the electronic device 901 may be performed by another electronic device or a plurality of external electronic devices. When the electronic device 901 performs some functions or services automatically or by request, the electronic device 901 may request the external electronic device to perform at least some of the functions related to the functions or services, in addition to or instead of performing the functions or services by itself. The external electronic device receiving the request may carry out the requested function or the additional function and transmit the result to the electronic device 901. The electronic device 901 may provide the requested functions or services based on the received result as is or after additionally processing the received result. To this end, for example, a cloud computing, distributed computing, or client-server computing technology may be used.
The image processing module 1035 may perform pre-processing or post-processing (e.g., adjustment of resolution, brightness, or size) with respect to at least part of the image data. According to an embodiment, the pre-processing or post-processing may be performed, for example, based at least in part on one or more characteristics of the image data or one or more characteristics of the display 1010.
The mapping module 1037 may generate a voltage value or a current value corresponding to the image data pre-processed or post-processed by the image processing module 1035. According to an embodiment, the generating of the voltage value or current value may be performed, for example, based at least in part on one or more attributes of the pixels (e.g., an array, such as an RGB stripe or a pentile structure, of the pixels, or the size of each subpixel). At least some pixels of the display 1010 may be driven, for example, based at least in part on the voltage value or the current value such that visual information (e.g., a text, an image, or an icon) corresponding to the image data may be displayed via the display 1010.
According to an embodiment, the display device 960 may further include the touch circuitry 1050. The touch circuitry 1050 may include a touch sensor 1051 and a touch sensor IC 1053 to control the touch sensor 1051. The touch sensor IC 1053 may control the touch sensor 1051 to sense a touch input or a hovering input with respect to a certain position on the display 1010. To achieve this, for example, the touch sensor 1051 may detect (e.g., measure) a change in a signal (e.g., a voltage, a quantity of light, a resistance, or a quantity of one or more electric charges) corresponding to the certain position on the display 1010. The touch circuitry 1050 may provide input information (e.g., a position, an area, a pressure, or a time) indicative of the touch input or the hovering input detected via the touch sensor 1051 to the processor 920. According to an embodiment, at least part (e.g., the touch sensor IC 1053) of the touch circuitry 1050 may be formed as part of the display 1010 or the DDI 1030, or as part of another component (e.g., the auxiliary processor 923) disposed outside the display device 960.
According to an embodiment, the display device 960 may further include at least one sensor (e.g., a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module 976 or a control circuit for the at least one sensor. In such a case, the at least one sensor or the control circuit for the at least one sensor may be embedded in one portion of a component (e.g., the display 1010, the DDI 1030, or the touch circuitry 950)) of the display device 960. For example, when the sensor module 976 embedded in the display device 960 includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor may obtain biometric information (e.g., a fingerprint image) corresponding to a touch input received via a portion of the display 1010. As another example, when the sensor module 976 embedded in the display device 960 includes a pressure sensor, the pressure sensor may obtain pressure information corresponding to a touch input received via a partial or whole area of the display 1010. According to an embodiment, the touch sensor 1051 or the sensor module 976 may be disposed between pixels in a pixel layer of the display 1010, or over or under the pixel layer.
Referring to
In operation 1101, the display may receive image data from an external processor. The external processor may be, for example, an application processor. In one embodiment, the image data may be data for outputting specified content on a first region of the display.
In operation 1103, the display may transmit the image data received in operation 1101 to a converter group (the converter group 220 of
In operation 1105, the display may connect a first group gamma circuit with at least some converters included in the converter group to apply a first grayscale voltage to first group subpixels. The first group gamma circuit may apply the first grayscale voltage to the at least some converters, and the first grayscale voltage may be applied to the first group subpixels connected to the at least some converters.
In operation 1107, the display may output specified content to the first region. The specified content may be output to the first region by applying a source voltage including the first grayscale voltage to the first group subpixels included in the first region.
In operation 1109, the display may connect a second group gamma circuit with second group subpixels to apply a second grayscale voltage to the second group subpixels.
In operation 1111, the display may output a specified color to a second region. The specified color may be output to the second region by applying the second grayscale voltage to the second group subpixels included in the second region.
According to an embodiment, unlike what is shown in
Referring to
In operation 1201, the electronic device may identify a display area of a display. The display area may be an area on which specified content is to be output. The non-display area may be an area on which the specified content is not to be output corresponding to the display area. In operation 1201, image data may be transmitted to a display driving circuit.
In operation 1203, the electronic device may activate the output of the first group gamma circuit and deactivate the output of the second group gamma circuit. Operation 1203 may be a case in which the electronic device applies a source voltage to the first group subpixels included in the display area. In this case, the first grayscale voltage may be applied to the first group subpixels by the first group gamma circuit.
In operation 1205, the electronic device may display the specified content on the display area. The specified content may be displayed by the first group subpixels to which the first grayscale voltage is applied.
In operation 1207, the electronic device may deactivate the output of the first group gamma circuit and activate the output of the second group gamma circuit. Operation 1207 may be a case in which the electronic device applies the source voltage to the second group subpixels included in the non-display area. In this case, the second grayscale voltage may be applied to the second group subpixels by the second group gamma circuit.
In operation 1209, the electronic device may display a specified color rather than the specified content on the non-display area. The specified color may be, for example, black. The specified color may be displayed by the second group subpixels to which the second grayscale voltage is applied.
According to an embodiment, unlike what is shown in
According to the embodiments disclosed in the disclosure, it is possible to provide a variety of high-definition content to the user even in the AOD state, thereby increasing user convenience. In addition, it is possible to efficiently control the power consumption in the electronic device, thereby providing a longer usage time to the user.
According to an embodiment, a display may include a display panel including a first region in which first group subpixels are disposed and a second region in which second group subpixels are disposed, a converter group including converters respectively connected to subpixels included in the first group subpixels and the second group subpixels to transfer image data for output of specified content to the subpixels, a first group gamma circuit selectively connected to the converters to output a first grayscale voltage whose intensity is determined based on a plurality of binary bits, a second group gamma circuit selectively connected to the subpixels to output a second grayscale voltage whose intensity is determined based on a single binary bit, and a controller that controls selective connections between the first group gamma circuit and the converters and selective connections between the second group gamma circuit and the subpixels. According to an embodiment, the controller may receive the image data from an external processor and transfer the image data to the converter group, connect the first group gamma circuit with at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters of the converter group, connect the second group gamma circuit with the second group subpixels such that the second group gamma circuit applies the second grayscale voltage to the second group subpixels, and output the specified content to at least a portion of the first region.
According to an embodiment, the subpixels may include a first subpixel, and the controller may perform control such that a connection between a converter connected to the first subpixel and the first group gamma circuit and a connection between the first subpixel and the second group gamma circuit are selectively made.
According to an embodiment, the display panel may further include a gate driver configured to apply a gate voltage to the subpixels, subpixels to which the gate voltage is applied at a same time point among the subpixels form at least one gate line, and the first region and the second region may be distinguished by a virtual line parallel to the at least one gate line.
According to an embodiment, the controller may control the gate driver to apply the gate voltage to the at least one gate line at a specified time interval for each gate line, the gate driver may sequentially apply the gate voltage in a direction from gate lines included in the second region to gate lines included in the first region, and the specified content may not output to subpixels included in at least one gate line adjacent to the second region among the gate lines included in the first region.
According to an embodiment, the controller may connect the first group gamma circuit with at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters of the converter group during a specified time, connect the second group gamma circuit with some subpixels connected to the at least some converters among the first group subpixels such that the second group gamma circuit applies the second grayscale voltage to the some subpixels connected to the at least some converters among the first group subpixels after the specified time has elapsed, and connect the second group gamma circuit with the second group subpixels such that the second group gamma circuit applies the second grayscale voltage to the second group subpixels.
According to an embodiment, the controller may receive image data at least partially different from the image data from the external processor and transfer the image data to the converter group, and connect the first group gamma circuit with the at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters.
According to an embodiment, the controller may connect the first group gamma circuit with at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters of the converter group during a first time, and connect the second group gamma circuit with the second group subpixels such that the second group gamma circuit applies the second grayscale voltage to the second group subpixels during a second time different from the first time.
According to an embodiment, the first group gamma circuit may include a first switch connected to a terminal to which the first grayscale voltage is output, and the controller may open the first switch during the second time.
According to an embodiment, the second group gamma circuit may include a second switch connected to a terminal to which the second grayscale voltage is output, and the controller may open the second switch during the first time.
According to an embodiment, the first group subpixels may include a first red subpixel, a first green subpixel, and a first blue subpixel, and the subpixels connected to the at least some converters may be at least one of the first red subpixel, the first green subpixel, and the first blue subpixel.
According to an embodiment, the controller may connect the second group gamma circuit with some subpixels of the first group subpixels such that the second group gamma circuit applies the second grayscale voltage to the some subpixels connected to remaining converters except the at least some converters among the first group subpixels.
According to an embodiment, the first group subpixels may include a first red subpixel, a first green subpixel, and a first blue subpixel, and the some subpixels of the first group subpixels may be at least one of the first red subpixel, the first green subpixel, and the first blue subpixel.
According to an embodiment, the display may further include a source amplifier group that amplifies image data transferred from the converter group to the subpixels.
According to an embodiment, the converter group may convert the image data from a digital signal to an analog signal.
According to an embodiment, the display may further include a gamma adjustment circuit that provides a gamma reference voltage to the first gamma circuit and the second gamma circuit and the controller may control the gamma adjustment circuit such that the gamma reference voltage has a specified magnitude.
According to an embodiment, an electronic device may include a display panel including a display area and a non-display area, and a display driving circuit that drives the display panel and includes a gamma driving circuit including a first group gamma circuit and a second group gamma circuit, and the display driving circuit may identify the display area on which content is to be displayed, display the content on the display area using the gamma driving circuit set to a state in which an output of the first group gamma circuit is activated and an output of the second group gamma circuit is deactivated, and display a specified color on the non-display area on which the content is not displayed, using the gamma driving circuit set to a state in which the output of the first group gamma circuit is deactivated and the output of the second group gamma circuit is activated.
According to an embodiment, the display driving circuit may display the content on the display area using the gamma driving circuit in the state in which the output of the first group gamma circuit is activated and the output of the second group gamma circuit is deactivated during a specified time, and display the content on the display area using the gamma driving circuit in the state in which the output of the first group gamma circuit is deactivated and the output of the second group gamma circuit is activated after the specified time elapses.
According to an embodiment, the content may correspond to first content, the display driving circuit may receive data for output of second content different from the first content and display the second content on the display area using the gamma driving circuit in response to reception of the data in the state in which the output of the first group gamma circuit is activated and the output of the second group gamma circuit is deactivated.
According to an embodiment, the first group gamma circuit may include a gamma amplifier.
According to an embodiment, the second group gamma circuit may include an inverter.
The electronic device according to various embodiments disclosed in the present disclosure may be various types of devices. The electronic device may include, for example, at least one of a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a mobile medical appliance, a camera, a wearable device, or a home appliance. The electronic device according to an embodiment of the present disclosure should not be limited to the above-mentioned devices.
It should be understood that various embodiments of the present disclosure and terms used in the embodiments do not intend to limit technologies disclosed in the present disclosure to the particular forms disclosed herein; rather, the present disclosure should be construed to cover various modifications, equivalents, and/or alternatives of embodiments of the present disclosure. With regard to description of drawings, similar components may be assigned with similar reference numerals. As used herein, singular forms may include plural forms as well unless the context clearly indicates otherwise. In the present disclosure disclosed herein, the expressions “A or B”, “at least one of A or/and B”, “A, B, or C” or “one or more of A, B, or/and C”, and the like used herein may include any and all combinations of one or more of the associated listed items. The expressions “a first”, “a second”, “the first”, or “the second”, used in herein, may refer to various components regardless of the order and/or the importance, but do not limit the corresponding components. The above expressions are used merely for the purpose of distinguishing a component from the other components. It should be understood that when a component (e.g., a first component) is referred to as being (operatively or communicatively) “connected,” or “coupled,” to another component (e.g., a second component), it may be directly connected or coupled directly to the other component or any other component (e.g., a third component) may be interposed between them.
The term “module” used herein may represent, for example, a unit including one or more combinations of hardware, software and firmware. The term “module” may be interchangeably used with the terms “logic”, “logical block”, “part” and “circuit”. The “module” may be a minimum unit of an integrated part or may be a part thereof. The “module” may be a minimum unit for performing one or more functions or a part thereof. For example, the “module” may include an application-specific integrated circuit (ASIC).
Various embodiments of the present disclosure may be implemented by software (e.g., the program 940) including an instruction stored in a machine-readable storage media (e.g., an internal memory 936 or an external memory 938) readable by a machine (e.g., a computer). The machine may be a device that calls the instruction from the machine-readable storage media and operates depending on the called instruction and may include the electronic device (e.g., the electronic device 901). When the instruction is executed by the processor (e.g., the processor 920), the processor may perform a function corresponding to the instruction directly or using other components under the control of the processor. The instruction may include a code generated or executed by a compiler or an interpreter. The machine-readable storage media may be provided in the form of non-transitory storage media. Here, the term “non-transitory”, as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency.
According to an embodiment, the method according to various embodiments disclosed in the present disclosure may be provided as a part of a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)) or may be distributed only through an application store (e.g., a Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or generated in a storage medium such as a memory of a manufacturer's server, an application store's server, or a relay server.
Each component (e.g., the module or the program) according to various embodiments may include at least one of the above components, and a portion of the above sub-components may be omitted, or additional other sub-components may be further included. Alternatively or additionally, some components (e.g., the module or the program) may be integrated in one component and may perform the same or similar functions performed by each corresponding components prior to the integration. Operations performed by a module, a programming, or other components according to various embodiments of the present disclosure may be executed sequentially, in parallel, repeatedly, or in a heuristic method. Also, at least some operations may be executed in different sequences, omitted, or other operations may be added.
While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2017-0176426 | Dec 2017 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2018/015995 | 12/17/2018 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2019/124900 | 6/27/2019 | WO | A |
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