Patent Application
20250124852
The present disclosure relates to the field of display technology, and in particular to a display apparatus and a driving method.
A display, such as an Organic Light-Emitting Diode (OLED) display, generally includes a plurality of pixel units. Each pixel unit may include: a plurality of sub-pixels of different colors. By controlling brightness of light emitted by the sub-pixels with different colors, these colors can be mixed to obtain a color desired to be displayed, so that a color image can be displayed.
A display apparatus according to an embodiment of the present disclosure includes: a display panel; and a driving circuit electrically connected to the display panel, and the driving circuit is configured to control, in response to the fact that each of sub-pixels in a photosensitive area of the display panel is controlled to be in a non-light-emitting state in a light-emitting period during a preset display frame, each of photosensitive elements in the photosensitive area to collect a light intensity signal of incident light.
In some possible implementations, the display panel includes a first area and a second area sequentially arranged in a column direction of the sub-pixels, the first area including the photosensitive area; and the driving circuit is further configured to control, in response to the fact that each of the sub-pixels in the first area is controlled to be in the non-light-emitting state in the light-emitting period during the preset display frame, each of the photosensitive elements in the photosensitive area to collect the light intensity signal of incident light.
In some possible implementations, the driving circuit is further configured to control an inactive pulse with a first duration to occur, in the light-emitting period, in a light emission control signal corresponding to each sub-pixel in the first area, to make each sub-pixel in the first area be in the non-light-emitting state in the light-emitting period, and a level of the inactive pulse of the light emission control signal is configured to control a light emission control transistor in the display panel to be turned off, and the first duration is longer than a duration of the non-light-emitting period of each sub-pixel, the non-light-emitting period occurring before the light-emitting period.
In some possible implementations, the light emission control signal has at least one inactive pulse in the light-emitting period; and one of the at least one inactive pulse is the inactive pulse with the first duration.
In some possible implementations, in a case where the light emission control signal has a plurality of inactive pulses in the light-emitting period, one of the inactive pulses having a longest duration is the inactive pulse with the first duration.
In some possible implementations, the driving circuit is further configured to stop outputting the light emission control signal to each of sub-pixels in the second area during the preset display frame.
In some possible implementations, the driving circuit is further configured to control an inactive pulse with a second duration to occur, during the preset display frame, in the light emission control signal corresponding to each sub-pixel in the second area in the light-emitting period, to make each sub-pixel in the second area be in the non-light-emitting state in the light-emitting period; and the inactive pulse with the first duration and the inactive pulse with the second duration are inactive pulses having the same occurrence order in the respective light emission control signals, and the first duration is longer than the second duration.
In some possible implementations, the driving circuit is further configured to control, during each of remaining display frames other than the preset display frame, light emission control signals corresponding to the sub-pixels in the first area and the second area to be the same.
In some possible implementations, the display panel further includes: a first light emission control circuit and a second light emission control circuit, the first light emission control circuit being electrically connected to the sub-pixels in the first area, and the second light emission control circuit being electrically connected to the sub-pixels in the second area; and the driving circuit is further configured to control the first light emission control circuit to output a corresponding light emission control signal to each sub-pixel in the first area, and control the second light emission control circuit to output a corresponding light emission control signal to each sub-pixel in the second area.
In some possible implementations, each of a plurality of adjacent display frames is the preset display frame; and/or at least two display frames of a plurality of adjacent display frames each are the preset display frame, and at least one of remaining display frames other than the preset display frame is arranged between every two adjacent preset display frames.
In some possible implementations, at least two display frames of a plurality of adjacent display frames each are the preset display frame; and the driving circuit is further configured to control each sub-pixel in the photosensitive area to be input with a data voltage corresponding to a zero grayscale during the preset display frame.
In some possible implementations, at least two display frames of a plurality of adjacent display frames each are the preset display frame; and the driving circuit is further configured to control each sub-pixel in a rest area of the display panel to be in a state of holding data voltage during each preset display frame.
In some possible implementations, the driving circuit is further configured to control each of the sub-pixels in the display panel to be input with a data voltage corresponding to a corresponding grayscale during each of the remaining display frames other than each preset display frame.
In some possible implementations, the driving circuit is further configured to control, during each of the plurality of display frames, each sub-pixel in the display panel to be input with a data voltage corresponding to a corresponding grayscale.
An embodiment of the present disclosure further provides a driving method, including: controlling, in response to the fact that each sub-pixel in a photosensitive area of a display panel is controlled to be in a non-light-emitting state in a light-emitting period during a preset display frame, each photosensitive element in the photosensitive area to collect a light intensity signal of incident light.
In some possible implementations, the display panel includes a first area and a second area sequentially disposed in a column direction of the sub-pixels, the first area including the photosensitive area; the controlling each of sub-pixels in a photosensitive area of a display panel to be in a non-light-emitting state in a light-emitting period during a preset display frame includes: controlling an inactive pulse with a first duration to occur, in the light-emitting period, in a light emission control signal corresponding to each sub-pixel in the first area, to make each sub-pixel in the first area be in the non-light-emitting state in the light-emitting period, and a level of the inactive pulse of the light emission control signal is configured to control a light emission control transistor in the display panel to be turned off, and the first duration is longer than a duration of the non-light-emitting period of each sub-pixel, the non-light-emitting period occurring before the light-emitting period.
In some possible implementations, the light emission control signal has at least one inactive pulse in the light-emitting period; and one of the at least one inactive pulse is the inactive pulse with the first duration.
In some possible implementations, the light emission control signal has a plurality of inactive pulses in the light-emitting period, and one of the inactive pulses having a longest duration is the inactive pulse with the first duration.
In some possible implementations, the driving method further includes: controlling an inactive pulse with a second duration to occur, during the preset display frame, in the light emission control signal corresponding to each sub-pixel in the second area the light-emitting period, to make each sub-pixel in the second area be in the non-light-emitting state in the light-emitting period; and the inactive pulse with the first duration and the inactive pulse with the second duration are inactive pulses having the same occurrence order in the respective light emission control signals, and the first duration is longer than the second duration.
In some possible implementations, the driving method further includes: controlling, during each of remaining display frame other than the preset display frame, light emission control signals corresponding to the sub-pixels in the first area and the second area to be the same.
In some possible implementations, each of a plurality of adjacent display frames is the preset display frame; and/or at least two display frames of a plurality of adjacent display frames are the preset display frame, and at least one rest display frame other than the preset display frame is arranged between every two adjacent preset display frames.
In some possible implementations, the driving method further includes: further including: controlling, in response to that at least two display frames of the adjacent display frames are the preset display frames, each sub-pixel in the photosensitive area to be input with a data voltage corresponding to zero grayscale during each preset display frame.
In some possible implementations, the driving method further includes: controlling, in response to that at least two display frames of the adjacent display frames are the preset display frames, each sub-pixel in a rest area of the display panel to be in a state of holding data voltage during each preset display frame.
In some possible implementations, the driving method further includes: control each of the sub-pixels in the display panel to be input with a data voltage corresponding to a corresponding grayscale during each of the remaining display frames other than each preset display frame.
In some possible implementations, the driving method further includes: controlling, during each of the plurality of display frames, each sub-pixel in the display panel to be input with a data voltage corresponding to a corresponding grayscale.
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the present disclosure without creative effort, are within the protection scope of the present disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by a person skilled in the art to which the present disclosure belongs. The term “first”, “second” and the like in the present disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The term “comprising/including”, “comprises/includes”, or the like means that the element or item preceding the word comprises/includes the element or item listed after the word and its equivalent, but does not exclude other elements or items. The term “connected/coupled”, “connecting/coupling” or the like is not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that sizes and shapes of various figures in the drawings are not to scale, but are merely intended to illustrate the present disclosure. Like reference numerals refer to like or similar elements or elements having like or similar functions throughout.
In an embodiment, as shown in
In some implementations, as shown in
In some implementations, in a case where brightness of the display panel is adjusted based on the photosensitive element array, the photosensitive element array may be an array of ambient light sensors (ALS).
In some implementations, in a case where photographing and video recording functions are implemented based on the photosensitive element array, the photosensitive element array may be a photodetector array in a camera.
In some implementations, in a case where a fingerprint recognition function is implemented based on the photosensitive element array, the photosensitive element array may be a fingerprint recognition detector array.
In some implementations, the display panel 100 may include a display area including a plurality of pixel units arranged in an array, and a non-display area surrounding the display area. In some implementations, Each pixel unit includes a plurality of sub-pixels with different colors. For example, each pixel unit may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, so that red, green, and blue may be mixed to implement a color display. Alternatively, each pixel unit may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, so that red, green, blue, and white may be mixed to implement a color display. Certainly, in practical applications, the colors of light emitted by the sub-pixels in the pixel unit may be determined according to practical application environments, and is not limited herein.
In some implementations, the photosensitive area is disposed in the display area, the photosensitive area is provided therein with pixel units, and a rest area of the display area except the photosensitive area is also provided therein with pixel units. Alternatively, in order to improve the transmittance, a density of the pixel units in the photosensitive area may be smaller than a density of the pixel units in the rest area of the photosensitive area.
Light-emitting diodes, such as organic light-emitting diodes (OLEDs), quantum dot light-emitting diodes (QLEDs), micro light-emitting diodes (Micro LEDs), and mini light-emitting diodes (Mini LEDs), have the advantages of self-luminescence, low energy consumption, and the like. In some implementations, the display panel in the embodiment of the present disclosure may be an OLED display panel. In the embodiment of the present disclosure, each sub-pixel may include a light-emitting diode and a pixel circuit for driving the light-emitting diode to emit light. In some implementations, the light-emitting diode may include: at least one of an OLED, a QLED, a Micro LED, or a Mini LED. Furthermore, the pixel circuit may generally include transistors and a capacitor.
In some implementations, as shown in
In some implementations, a gate of the driving transistor M0 is electrically connected to a node N1, a first electrode of the driving transistor M0 is electrically connected to a node N2, and a second electrode of the driving transistor M0 is electrically connected to a node N3. In some implementations, as shown in
In some implementations, a gate of the data writing transistor M1 is electrically connected to a first scan signal terminal GA_P, a first electrode of the data writing transistor M1 is electrically connected to a data signal terminal, and a second electrode of the data writing transistor M1 is electrically connected to the node N2. In some implementations, the data writing transistor M1 is turned on under the control of an active pulse level of a first scan signal at the first scan signal terminal GA_P, and is turned off under the control of an inactive level of the first scan signal. Alternatively, as shown in
In some implementations, a gate of the first reset transistor M2 is electrically connected to a first reset signal terminal RE_N, a first electrode of the first reset transistor M2 is electrically connected to a first initialization signal terminal VINIT1, and a second electrode of the first reset transistor M2 is electrically connected to the node N1. In some implementations, the first reset transistor M2 is turned on under the control of an active pulse level of a first reset signal at the first reset signal terminal RE_N and turned off under the control of an inactive level of the first reset signal. Alternatively, as shown in
In some implementations, a gate of the second reset transistor M3 is electrically connected to a second reset signal terminal RE_P, a first electrode of the second reset transistor M3 is electrically connected to a second initialization signal terminal VINIT2, and a second electrode of the second reset transistor M3 is electrically connected to an anode of the light-emitting diode L. In some implementations, the second reset transistor M3 is turned on under the control of an active pulse level of a second reset signal at the second reset signal terminal RE_P, and turned off under the control of an inactive level of the second reset signal. Alternatively, as shown in
In some implementations, a gate of the threshold compensation transistor M4 is electrically connected to a second scan signal terminal GA_N, a first electrode of the threshold compensation transistor M4 is electrically connected to the node N1, and a second electrode of the threshold compensation transistor M4 is electrically connected to the node N3. In some implementations, the threshold compensation transistor M4 is turned on under the control of an active pulse level of a second scan signal at the second scan signal terminal GA N and turned off under the control of an inactive level of the second scan signal. Alternatively, as shown in
In some implementations, a gate electrode of the first light emission control transistor M5 is electrically connected to a light emission control signal terminal EM, a first electrode of the first light emission control transistor M5 is electrically connected to a first power terminal ELVDD, and a second electrode of the first light emission control transistor M5 is electrically connected to the node N2. In some implementations, the first emission control transistor M5 is turned on under the control of an active pulse level of a light emission control signal at the emission control signal terminal EM, and is turned off under the control of an inactive level of the emission control signal. Alternatively, as shown in
In some implementations, a gate of the second light emission control transistor M6 is electrically connected to the light emission control signal terminal EM, a first electrode of the second light emission control transistor M6 is electrically connected to the node N3, and a second electrode of the second light emission control transistor M6 is electrically connected to the anode of the light-emitting diode L. In some implementations, the second emission control transistor M6 is turned on under the control of an active pulse level of the light emission control signal at the emission control signal terminal EM, and is turned off under the control of an inactive level of the light emission control signal. Alternatively, as shown in
A first electrode of the storage capacitor CST is electrically connected to the node N1, and a second electrode of the storage capacitor CST is electrically connected to the first power terminal ELVDD.
In some implementations of the present disclosure, the first power terminal ELVDD may be configured to be loaded with a constant first power voltage, and the first power voltage is generally a positive power voltage. Furthermore, the second power terminal ELVSS may be applied with a constant second power voltage, and the second power voltage may be generally a ground voltage or a negative power voltage. In practical applications, the first power voltage and the second power voltage may be determined as desired, which is not limited herein.
In some implementations of the present disclosure, the first electrode of the transistor may be used as a source thereof and a second electrode of the transistor may be used as a drain thereof, depending on the type of the transistor and the signal at the gate of the transistor; or, conversely, the first electrode of the transistor may be used as the drain thereof, and the second electrode may be used as the source thereof, which may be determined as desired, and is not specifically limited herein.
The foregoing is merely an example of a specific structure of the pixel circuit provided in the embodiment of the present disclosure, and in a specific implementation, the pixel circuit is not limited to the structure described above in the embodiment of the present disclosure, and may further be other structures known to a person skilled in the art, which are within the protection scope of the present disclosure and are not limited herein.
In some examples, the structure of the pixel circuit shown in
In the timing diagram, T4 represents the light-emitting period, and the non-light-emitting period T0 includes a reset phase T1, a data writing phase T2 and an initialization phase T3. Re_n represents the first reset signal applied to the first reset signal terminal RE_N, ga_n represents the second scan signal applied to the second scan signal terminal GA_N, ga_p represents the first scan signal applied to the first scan signal terminal GA_P, re_p represents the second reset signal applied to the second reset signal terminal RE_P, and em represents the light emission control signal applied to the light emission control signal terminal EM.
In the reset phase T1, the first reset transistor M2 is turned on, and a first initialization voltage at the first initialization signal terminal VINIT1 is input to the node N1, so that the node N1 is reset. In this phase, the first light emission control transistor M5 and the second light emission control transistor M6 are turned off, and the light-emitting diode L does not emit light.
In the data writing phase T2, the data writing transistor M1 and the threshold compensation transistor M4 are turned on, a data voltage Vda applied to the data signal terminal DA is input to the node N2 to charge the node N1 through the driving transistor M0 serving as a diode, so that a voltage of the node N1 is changed to Vda+Vth. Vth represents a threshold voltage of the driving transistor M0. In this phase, the first light emission control transistor M5 and the second light emission control transistor M6 are turned off, and the light-emitting diode L does not emit light.
In the initialization phase T3, the second reset transistor M3 is turned on, and a second initialization voltage of the second initialization signal terminal VINIT2 is input to the anode of the light-emitting diode L to initialize the anode of the light-emitting diode L. In this phase, the first light emission control transistor M5 and the second light emission control transistor M6 are turned off, and the light-emitting diode L does not emit light.
In the light-emitting period T4, the first light emission control transistor M5 and the second light emission control transistor M6 are turned on, the voltage of the node N2 is changed to the first power voltage Velvdd, the voltage of the NI node is still Vda+Vth, and the driving transistor M0 generates a current IL, and IL=k(Vda−Velvdd)2, where k is a structural parameter. The current IL is input into the light-emitting diode L to drive the light-emitting diode L to emit light.
As shown in
In practical applications, generally, during the non-light-emitting period (i.e., a period from a beginning of the reset phase T1 to an end of the initialization phase T3) in which a first inactive pulse (e.g., a pulse corresponding to a high level) occurs in the light emission control signal, the driving circuit controls the photosensitive elements to collect a light intensity signal. For example, as shown in
In order to improve the accuracy of the light intensity signal collected by the photosensitive elements, in the embodiment of the present disclosure, the driving circuit controls each sub-pixel in the photosensitive area to be in a non-light-emitting state during the light-emitting period of a preset display frame, and controls each photosensitive element in the photosensitive area to collect the light intensity signal of incident light in response to the fact that each sub-pixel in the photosensitive area is in the non-light-emitting state during the light-emitting period of the preset display frame. Therefore, by controlling the sub-pixels in the photosensitive area to be in the non-light-emitting state during the light-emitting period of the preset display frame, the duration that each sub-pixel in the photosensitive area is in the non-light-emitting state may be adjusted. For example, the duration that each sub-pixel in the photosensitive area is in the non-light-emitting state is prolonged, so that each photosensitive element is controlled to collect the light intensity signal of the incident light in the prolonged duration, the photosensitive elements may effectively collect the light intensity signal, and the accuracy of the collected light intensity signal is improved. In some implementations, as shown in
For example, in a case where the photosensitive element array is an array of ambient light sensors (ALS), the light intensity signal of the incident light collected by the photosensitive elements may be an ambient light signal, so that the display brightness of the display panel may be adjusted according to the collected ambient light signal. In the embodiment of the present disclosure, the accuracy of the collected light intensity signal can be improved, so that the accuracy of the collected ambient light signal can be improved. Furthermore, the accuracy of adjustment of the display brightness of the display panel can be improved, and the display brightness of the display panel can be automatically adjusted.
In some implementations, in a case where the photosensitive element array is the photodetector array in the camera, the photographing and video recording functions may be implemented according to the collected light intensity signal. In the embodiment of the present disclosure, the accuracy of the collected light intensity signal can be improved, so that the definition of photographing and video recording can be improved.
For example, in a case where the photosensitive element array is a fingerprint recognization detector array, the light intensity signal of incident light collected by the photosensitive elements may be a light intensity signal of light reflected by a finger, so that fingerprint recognization may be performed according to the collected light intensity signal of light reflected by the finger. In the embodiment of the present disclosure, the accuracy of the collected light intensity signal can be improved, so that the accuracy of the collected light intensity signal of light reflected by the finger can be improved, and the accuracy of finger recognization can be improved.
In the embodiment of the present disclosure, the sub-pixel being in the non-light-emitting state means that the sub-pixel does not emit light. That is, the light-emitting diode in the sub-pixel does not emit light.
In some implementations of the present disclosure, as shown in
For example, the light emission control signal may have an inactive pulse in the light-emitting period to control the sub-pixel not to emit light. In a practical implementation, the driving circuit is further configured to control the light emission control signal corresponding to each sub-pixel in the first area aa1 to have an inactive pulse with a first duration in the light-emitting period, so that each sub-pixel in the first area aa1 is in the non-light-emitting state in the light-emitting period. A level of the inactive pulse of the light emission control signal is used for controlling the light emission control transistor in the display panel to be turned off, the first duration is longer than a duration of the non-light-emitting period of each sub-pixel, and the non-light-emitting period occurs before the light-emitting period. Therefore, the duration of each sub-pixel in the first area aa1 being in the non-light-emitting state can be prolonged, so that each photosensitive element is controlled to collect the light intensity signal of incident light in the prolonged duration, each photosensitive element can effectively collect the light intensity signal, and the accuracy of the collected light intensity signal can be improved.
For example, referring to
For example, as shown in
In some implementations of the present disclosure, each of a plurality of adjacent display frames may be the preset display frame. For example, as shown in
In some implementations of the present disclosure, at least two display frames of the plurality of adjacent display frames each may be specified as the preset display frame, and at least one remaining display frame other than the preset display frames may be provided between every two adjacent preset display frames. In some implementations, one remaining display frame other than the preset display frames may be provided between every two adjacent preset display frames. For example, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control, during each of the remaining display frames other than the preset display frames, each sub-pixel in the display panel to be input with a data voltage corresponding a grayscale, so as to control the display panel to display an image. For example, for the remaining display frames (such as the display frame FA1, the display frame FA3, the display frame FA5, the display frame FA7, the display frame FA9 and the display frame FA 11), the driving circuit may drive each sub-pixel in the display panel to perform an operation process of each display frame based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n and the light emission control signal em in the timing diagram of signals shown in
In some implementations of the present disclosure, the driving circuit is further configured to control each of the sub-pixels in the first area and the second area of the display panel to be input with a data voltage corresponding to a grayscale during each preset display frame. For example, during each preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to be input with the data voltage corresponding to the grayscale based on the timing diagram of signals shown in
Since Vda of the gate voltage Vda+Vth of the driving transistor M0 is a data voltage corresponding to a zero grayscale, the current IL generated by the driving transistor M0 is minimized and is not enough to drive the light-emitting diode L to emit light, so that each sub-pixel in the photosensitive area may be directly in the non-light-emitting state during the light-emitting period. In some implementations of the present disclosure, in a case where there are at least two preset display frames in the plurality of adjacent display frames, the driving circuit is further configured to control each sub-pixel in the photosensitive area to be input with the data voltage corresponding to a zero grayscale during each preset display frame.
In some implementations of the present disclosure, in a case where there are at least two preset display frames in the plurality of adjacent display frames, the driving circuit is further configured to control each sub-pixel in the photosensitive area to be input with a data voltage corresponding to the zero grayscale during each preset display frame. Alternatively, the driving circuit is further configured to control each sub-pixel in the photosensitive area to be input with a data voltage corresponding to a grayscale during each preset display frame. Furthermore, the driving circuit is further configured to control each sub-pixel in a remaining area other than the photosensitive area to be input with a data voltage corresponding to a corresponding grayscale or to control each sub-pixel in the remaining area other than the photosensitive area to hold the data voltage during each preset display frame.
Furthermore, in a case where there are at least two preset display frames in the plurality of adjacent display frames, the driving circuit is further configured to control each sub-pixel in the first area to be input with a data voltage corresponding to a zero grayscale during each preset display frame. Alternatively, the driving circuit is further configured to control each of the sub-pixels in the first area to be input with a data voltage corresponding to a corresponding grayscale during each display frame. Furthermore, the driving circuit is further configured to control each sub-pixel in the second area to be input with a data voltage corresponding to a corresponding grayscale or control each sub-pixel in the second area to hold the data voltage during each preset display frame.
For example, during each preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to be input with a data voltage corresponding to a corresponding grayscale or a data voltage corresponding to a zero grayscale based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n and the light emission control signal em1 in the timing diagram of signals shown in
For example, in each remaining display frame other than the preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to be input with a data voltage corresponding to a corresponding grayscale based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n and the light emission control signal em in the timing diagram of signals shown in
In some implementations, during each preset display frame, the driving circuit controls each sub-pixel in the second area of the display panel to be in a state of holding the data voltage. Alternatively, each sub-pixel in the second area may not be input with a corresponding data voltage, so that each sub-pixel in the second area is in the state of holding the data voltage, thereby reducing power consumption. For example, during each preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to perform an operation process of each display frame based on the timing diagram of signals shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control the first light emission control circuit 310 to output corresponding light emission control signals to the sub-pixels in the first area aa1, and to control the second light emission control circuit 320 to output corresponding light emission control signals to the sub-pixels in the second area aa2.
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control the first reset control circuit 410 to output a corresponding first reset signal to each sub-pixel in the first area aa1, and to control the second reset control circuit 420 to output a corresponding first reset signal to each sub-pixel in the second area aa2.
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control the third reset control circuit 510 to output a corresponding second reset signal to each sub-pixel in the first area aa1, and to control the fourth reset control circuit 520 to output a corresponding second reset signal to each sub-pixel in the second area aa2.
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control the first scan control circuit 610 to output a corresponding first scan signal to each sub-pixel in the first area aa1, and to control the second scan control circuit 620 to output a corresponding first scan signal to each sub-pixel in the second area aa2.
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control the third scan control circuit 710 to output a corresponding second scan signal to each sub-pixel in the first area aa1, and to control the fourth scan control circuit 720 to output a corresponding second scan signal to each sub-pixel in the second area aa2.
In some implementations of the present disclosure, the display panel further includes a plurality of data lines in the display area, and the data signal terminals of the pixel circuits in a column of sub-pixels may be electrically connected to one of the data lines. Alternatively, the data signal terminals of the pixel circuit in two columns of sub-pixels may be electrically connected to one of the data lines, which is not limited herein.
For example, during each preset display frame, the driving circuit may drive the corresponding transistors in the sub-pixels in the first area aa1 in the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em1 shown in
For example, during each preset display frame, the driving circuit may control the second reset control circuit 420 to stop outputting the first reset signal, control the fourth reset control circuit 520 to stop outputting the second reset signal, control the second scan control circuit 620 to stop outputting the first scan signal, control the fourth scan control circuit 720 to stop outputting the second scan signal, and control the second light emission control circuit 320 to stop outputting the light emission control signal. The driving circuit may control not to input the data voltage to all the data lines. In this way, the sub-pixels in the second area aa2 may hold the original data voltage during each preset display frame, thereby maintaining the original display image and further reducing the power consumption of the display panel.
For example, during each preset display frame, the driving circuit may drive the corresponding transistors in the sub-pixels in the second area aa2 in the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em shown in
For example, during each remaining display frame other than the preset display frame, the driving circuit may drive the transistors in the sub-pixels in the first and second areas aa1 and aa2 in the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em shown in
Alternatively, all the first reset signal lines may be electrically connected to one reset control circuit, all the second reset signal lines may be electrically connected to another reset control circuit, all the first scan signal lines may be electrically connected to one scan control circuit, and all the second scan signal lines may be electrically connected to another scan control circuit, which is not limited herein.
The embodiment of the present disclosure provides still other timing diagrams of signals, as shown in
In the embodiment of the present disclosure, the light emission control signal has a plurality of inactive pulses in the light-emitting period. For example, as shown in
In the embodiment of the present disclosure, one of the plurality of inactive pulses that the light emission control signal has in the light-emitting period is an inactive pulse having a first duration. Furthermore, the inactive pulse with the longest duration of the plurality of inactive pulses is the inactive pulse with the first duration. For example, as shown in
In some implementations of the present disclosure, the driving circuit is further configured to control each of the sub-pixels in the display panel to be input with a data voltage corresponding to a corresponding grayscale during each remaining display frame other than the preset display frame. In some implementations, for the remaining display frames, such as the display frame FA1, the display frame FA3, the display frame FA5, the display frame FA7, the display frame FA9 and the display frame FA 11, of the plurality of display frames other than the preset display frames, the driving circuit may drive each sub-pixel in the display panel to perform the operation process of each display frame based on a first reset signal re_n, a second reset signal re_p, a first scan signal ga_p, a second scan signal ga_n and a light emission control signal em in the timing diagram of signals shown in
In some implementations of the present disclosure, the driving circuit is further configured to control, during each of the remaining display frames, each sub-pixel of the display panel to be input with a data voltage corresponding to a corresponding grayscale to display an image. That is, in each of the remaining display frames, each sub-pixel of the display panel is controlled to be input with the data voltage corresponding to the corresponding grayscale. For example, during each preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to perform the operation process of each display frame based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n and the light emission control signal em1 in the timing diagram of signals shown in
In some implementations, as shown in
In some implementations of the present disclosure, in a case where there are at least two preset display frames in adjacent display frames, the driving circuit is further configured to control, during each preset display frame, each sub-pixel in the photosensitive area to be input with a data voltage corresponding to a zero grayscale. Since Vda of the gate voltage Vda+Vth of the driving transistor M0 is the data voltage corresponding to a zero grayscale, the current IL generated by the driving transistor M0 is minimized and is not enough to drive the light-emitting diode L to emit light, so that each sub-pixel in the photosensitive area may be directly in the non-light-emitting state during the light-emitting period. Furthermore, in a case where there are at least two preset display frames in the adjacent display frames, the driving circuit is further configured to control, during each preset display frame, each sub-pixel in the remaining area of the display panel to be in a state of holding the data voltage. For example, each sub-pixel in the remaining area may not be input with the corresponding data voltage, so that each sub-pixel in the remaining area is in the state of holding the data voltage, thus the power consumption is reduced. For example, during each preset display frame, the driving circuit may drive each sub-pixel in the first area aa1 of the display panel to perform the operation process of each display frame based on the timing diagram of signals shown in
For example, during each preset display frame, the driving circuit may drive the transistors in the sub-pixels in the first area aa1 of the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em1 shown in
For example, during each preset display frame, the driving circuit may control the second reset control circuit 420 to stop outputting the first reset signal, control the fourth reset control circuit 520 to stop outputting the second reset signal, control the second scan control circuit 620 to stop outputting the first scan signal, control the fourth scan control circuit 720 to stop outputting the second scan signal, and control the second light emission control circuit 320 to stop outputting the light emission control signal. The driving circuit controls not to input the data voltage to all the data lines. In this way, the power consumption of the display panel can be reduced.
In some implementations, during each preset display frame, the driving circuit may drive the transistors in the sub-pixels in the second area aa2 of the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em shown in
In some implementations, during each of the remaining display frames other than each preset display frame, the driving circuit may drive the transistors in the sub-pixels in the first area aa1 and the second area aa2 of the display panel based on the first reset signals re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n and the light emission control signal em shown in
In some implementations of the present disclosure, the driving circuit may control an inactive pulse with a first duration WT1 to occur, in the light-emitting period, in the light emission control signal corresponding to each sub-pixel in the first area aa1, so that each sub-pixel in the first area aa1 is in the non-light-emitting state in the light-emitting period, and control each photosensitive element in the photosensitive area to collect the light intensity signal of incident light. Taking a case where the photosensitive element array is an array of ambient light sensor (ALS) as an example, brightness of the ambient light can be determined according to the light intensity signal collected by each photosensitive element, so that the display brightness of the display panel can be adjusted according to the determined brightness of the ambient light.
In some implementations, as shown in
In some implementations of the present disclosure, the driving circuit may further control, in response to the fact that each sub-pixel in the photosensitive area is in the light-emitting period during each preset display frame, each of the photosensitive elements to collect the light intensity signal of the incident light for the first time. The driving circuit may control an inactive pulse with a first duration WT1 to occur, in the light-emitting period, in the light emission control signal corresponding to each sub-pixel in the first area aa1, so that each sub-pixel in the first area aa1 is in a non-light-emitting state in the light-emitting period, and control each photosensitive element in the photosensitive area to collect the light intensity signal of the incident light for the second time. Taking a case where the photosensitive element array is an array of ambient light sensors (ALS) as an example, the light intensity signal collected for the first time can be corrected according to the light intensity signal collected by each photosensitive element for the second time, and therefore, the brightness of the ambient light can be determined. That is, the brightness of the ambient light can be determined according to the light intensity signals collected by each photosensitive element for the first time and for the second time, so that the display brightness of the display panel can be adjusted based on the determined brightness of the ambient light.
In some implementations, as shown in
An embodiment of the present disclosure further provides a timing diagram of signals as shown in
In some implementations of the present disclosure, the driving circuit may further insert an intermediate display frame for displaying a black picture between every two adjacent display frames to control each photosensitive element in the photosensitive area to collect the light intensity signal of the incident light during the intermediate display frame. Therefore, each photosensitive element can collect the light intensity signal in a duration of one display frame, therefore, the accuracy of the collected light intensity signal can be improved.
In some implementations, the intermediate display frame is inserted between every two adjacent display frames. For example, taking the display frames FA1 to FA6 as an example, an intermediate display frame FAM may be inserted between the display frame FA1 and the display frame FA2, and an intermediate display frame FAM may be inserted between the display frame FA2 and the display frame FA3, and so on, which is not repeated herein.
Alternatively, an intermediate display frame may be inserted between every three adjacent display frames of the adjacent display frames. Alternatively, an intermediate display frame may be inserted between every four, five or more adjacent display frames of the adjacent display frames, which is not limited herein.
For example, during the intermediate display frame, the driving circuit may control each sub-pixel in the photosensitive area to display a black picture. Alternatively, during the intermediate display frame, the driving circuit may control to input a data voltage corresponding to a zero grayscale to each sub-pixel in the photosensitive area, so that the sub-pixels in the photosensitive area display a black picture.
For example, during the intermediate display frame, the driving circuit may drive the corresponding transistors in the sub-pixels in the first area aa1 of the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em1 shown in
For example, during the intermediate display frame, the driving circuit may control the sub-pixels in the remaining area other than the photosensitive area to keep displaying the display picture of the previous display frame. Alternatively, during the intermediate display frame, the driving circuit may control each sub-pixel in the remaining area other than the photosensitive area to hold the data voltage of the previous display frame, so that the sub-pixels in the remaining area keep displaying the display picture of the previous display frame. Therefore, the power consumption of the display panel can be reduced.
For example, during the intermediate display frame, the driving circuit may control the second reset control circuit 420 to stop outputting the first reset signal, control the fourth reset control circuit 520 to stop outputting the second reset signal, control the second scan control circuit 620 to stop outputting the first scan signal, control the fourth scan control circuit 720 to stop outputting the second scan signal, and control the second light emission control circuit 320 to stop outputting the light emission control signal. Furthermore, the driving circuit controls not to input the data voltage to all the data lines. In this way, the sub-pixels in the second area aa2 can maintain the previous data voltage during each preset display frame, and thus maintain the previous display picture, so that the power consumption of the display panel can be further reduced.
In some implementations, the driving circuit may control the display panel to display a normal picture during each display frame. For example, the driving circuit may drive the transistors in the sub-pixels in the first area aa1 and the second area aa2 of the display panel based on the first reset signal re_n, the second reset signal re_p, the first scan signal ga_p, the second scan signal ga_n, and the light emission control signal em shown in
An embodiment of the present disclosure further provides a driving method, including: controlling, in response to the fact that each sub-pixel in the photosensitive area of the display panel is controlled to be in a non-light-emitting state in a light-emitting period during a preset display frame, each photosensitive element in a photosensitive area to collect a light intensity signal of incident light. The operation principle and the specific implementations of the driving method are the same as those of the driving circuit in the above-described embodiments, and therefore, the driving method may be implemented by referring to the specific implementations of the driving circuit in the above-described embodiments, and is not described again here.
As will be appreciated by a person skilled in the art, the embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Accordingly, the present disclosure may take the form of an embodiment of a complete hardware, an embodiment of a complete software or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-readable storage medium (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-readable program code embodied therein.
The present disclosure is described with reference to flowcharts and/or block diagrams of the methods, the apparatus (systems), and the computer program product according to the present disclosure. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flows and/or blocks in the flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which are executed by the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.
These computer program instructions may alternatively be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce a product including an instruction mean which implements the function specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.
These computer program instructions may alternatively be loaded onto a computer or other programmable data processing apparatus to cause a series of operation steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which are executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.
Although preferred embodiments of the present disclosure have been described, a person skilled in the art may make additional changes and modifications to these embodiments once they have knowledge of the basic creative concepts. Therefore, the attached claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.
It will be apparent to a person skilled in the art that various changes and modifications may be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if such changes and modifications of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and changes as well.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2023/071924 | 1/12/2023 | WO |
