Patent Application
20210142751
This application claims priority to Chinese Patent Application No. 2018218692119, filed to China's SIPO on Nov. 13, 2018 and entitled “pixel driving circuit and display device”, the content of which is incorporated herein by reference in its entirety.
The present application relates to the field of display technologies, and particularly to a pixel driving circuit and a display device.
The statements in this part only provide background information related to this application, and do not necessarily constitute prior art. TFT-LCD (Thin Film Transistor Liquid Crystal Display) is an electronic component commonly used in the current industrial technology. According to a working method of the TFT-LCD in the traditional technology, the TFT-LCD can display a complete frame through different pixel driving methods. The display panel includes a plurality of pixels, and the pixels in the display panel are scanned cyclically through a driving signal to realize display of a complete image/video of the display panel at a high frame rate, and the TFT-LCD can be in a normal and stable working condition when driven by the driving signal.
With the rapid development of display technologies, the frame in the display panel has developed in a direction of widescreen and large size. In the traditional technology, the frame of the display panel can be displayed with a large viewing angle, thereby bringing a better real experience to the user. However, since different pixels in the display panel need to be kept charged during normal operation, the charging signals introduced to the different pixels are not the same during the driving process of the display panel, such that there are problems that the charging rate of the pixels of the display panel is insufficient, the large-angle display effect of the frames in the display screen is not good, and the scanning driving cost of the display panel is high, thereby the user experience is poor.
An object of the present application is to provide a pixel driving circuit and a display device, including but not limited to solving the problems in the exemplary technologies, i.e., the large-angle display effect of the display panel is poor, the charging rates of the pixels in the display panel are insufficient, and the scanning and driving cost of the pixels is relatively high, therefore the user's visual experience is poor.
The technical solutions adopted by embodiments of the present application include a pixel driving circuit, which includes:
a plurality of sub-pixels regularly arranged into at least six rows and at least one column, wherein at least three consecutive sub-pixels located in the same column constitute one pixel, each two rows of pixels form one group, and each of the sub-pixels comprises M domains area;
at least 3M scan wires, wherein each row of the sub-pixels is correspondingly connected to M scan wires, and ith domain areas of the sub-pixels with the same color in each group of pixels are connected to the same scan wire;
at least two data wires, wherein each column of the sub-pixels is correspondingly connected to two data wires, any two adjacent domain areas in a row direction are connected to the same data wire, and the any two adjacent domain areas in the row direction are located in different sub-pixels;
and a driving circuit connected to the scan wires and the data wires, wherein the driving circuit is configured to output a scan signal through the scan wire to sequentially control each of the sub-pixels in the same row to turn on, and further configured to output a data driving signal through the data wire to charge the sub-pixels corresponding to the data wire, so that polarities of any two adjacent domain areas in the same sub-pixel are different;
wherein M≥2, 1≤i≤M, and M and i are integers.
Another purpose of the present application is aimed to provide a pixel driving circuit, which includes:
a plurality of sub-pixels regularly arranged into at least six rows and at least one column, wherein at least three consecutive sub-pixels located in the same column constitute one pixel, each two rows of pixels form one group, and each of the sub-pixels comprises M domains area;
at least 3M scan wires, wherein each row of the sub-pixels is correspondingly connected to M scan wires, and ith domain areas of the sub-pixels with the same color in each group of pixels are connected to the same scan wire;
at least two data wires, wherein each column of the sub-pixels is correspondingly connected to two data wires, any two adjacent domain areas in a row direction are connected to the same data wire, and the any two adjacent domain areas in the row direction are located in different sub-pixels;
and
a driving circuit connected to the scan wires and the data wires, wherein the driving circuit is configured to output a scan signal through the scan wire to sequentially control each of the sub-pixels in the same row to turn on, and further configured to output a data driving signal through the data wire to charge the sub-pixels corresponding to the data wire, so that polarities of any two adjacent domain areas in the same sub-pixel are different;
wherein polarities of any two adjacent domain areas in the row direction are the same, and the any two adjacent domain areas in the row direction are located in different sub-pixels;
wherein any two adjacent domain areas in the row direction are connected to the same scan wire, and the any two adjacent domain areas in the row direction are located in different sub-pixels;
wherein a first domain area and a Mth domain area in the same sub-pixel are connected to different scan wires, and the first domain area and the Mth domain area in the same sub-pixel are connected to different data wires;
wherein M≥2, 1≤i≤M, and M and i are integers.
Another purpose of the present application is aimed to provide a display device, which includes a pixel driving circuit and a display panel, wherein the pixel driving circuit is electrically connected to the display panel, and a frame display state of the display panel is changed by the pixel driving circuit; wherein the pixel driving circuit includes:
a plurality of sub-pixels regularly arranged into at least six rows and at least one column, wherein at least three consecutive sub-pixels located in the same column constitute one pixel, each two rows of pixels form one group, and each of the sub-pixels comprises M domains area;
at least 3M scan wires, wherein each row of the sub-pixels is correspondingly connected to M scan wires, and ith domain areas of the sub-pixels with the same color in each group of pixels are connected to the same scan wire;
at least two data wires, wherein each column of the sub-pixels is correspondingly connected to two data wires, any two adjacent domain areas in a row direction are connected to the same data wire, and the any two adjacent domain areas in the row direction are located in different sub-pixels;
and a driving circuit connected to the scan wires and the data wires, wherein the driving circuit is configured to output a scan signal through the scan wire to sequentially control each of the sub-pixels in the same row to turn on, and further configured to output a data driving signal through the data wire to charge the sub-pixels corresponding to the data wire, so that polarities of any two adjacent domain areas in the same sub-pixel are different;
wherein M≥2, 1≤i≤M, and M and i are integers.
In the pixel driving circuit provided by the embodiments of the present application, the number of scan wires is greatly reduced, and the sub-pixels with the same color can be controlled by the same scan signal to present complete and clear frames, and the scanning and driving cost of the pixel driving circuit is reduced. Therefore, in the present application, through utilizing the arrangement and distribution features of the domain areas of the sub-pixels in the horizontal direction and the vertical direction, the same data driving signal is introduced into adjacent domain areas of different sub-pixels in the row direction to improve the charging rate of each of the sub-pixels of the display panel, thus the display quality of the large-angle frames in the display panel is better, the scanning and driving cost of the plurality of the sub-pixels of the display panel is lower, and the user's visual experience is better. In the pixel driving circuit in the embodiments of the present application, the charging rates of the plurality of sub-pixels and the frame display effect of each of the sub-pixels are evenly improved, the frames of the display panel has a higher sense of reality, and the pixel driving circuit has an extremely wide application range.
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments or exemplary technologies are briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings may be obtained without creative work by those of ordinary skill in the art based on these drawings.
In order to make the purpose, technical solutions, and advantages of this application clearer, this application will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.
It should be noted that when a circuit is referred to as “being fixed on” or “being arranged on” another circuit, it can be directly on said another circuit or indirectly on said another circuit. When a circuit is referred to as “being connected to” another circuit, it can be directly or indirectly connected to said another circuit. The orientations or position relationships indicated by the terms “upper”, “lower”, “left”, “right”, etc. are based on the orientations or position relationships as shown in the drawings, and are only for ease of description, but are not used to indicate or imply that a designated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific conditions. The terms “first” and “second” are only used for ease of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of a designated technical feature. The meaning of “plurality” means two or more, unless otherwise specifically defined.
In order to illustrate the technical solutions described in the present application, detailed descriptions are given below in conjunction with specific drawings and embodiments.
As an example, the term “one row” mentioned in the present application refers to a plurality of objects arranged in sequence in the horizontal direction, the term “one column” mentioned in the present application refers to a plurality of objects arranged in sequence in the vertical direction, and the row direction refers to the horizontal direction, and the column direction refers to the vertical direction.
As shown in
Regarding the plurality of sub-pixels, the plurality of sub-pixels are regularly arranged into at least six rows and at least one column, at least three consecutive sub-pixels located in the same column constitute one pixel, each two rows of pixels constitute one group, and each sub-pixel includes M domain areas.
Exemplarily, in the pixel driving circuit as shown in
In this embodiment, the sub-pixels in the pixel driving circuit are arranged in an array both in the vertical direction and the horizontal direction, and each sub-pixel is connected to the data wire D and the scan wire G. The data wire D is configured to transmit a data driving signal, and a light-emitting state of each sub-pixel may be controlled by the data driving signal. The scan wire G is configured to transmit a scanning signal, and an on state or an off state of each sub-pixel may be controlled by the scanning signal, and the scanning signal includes control information for turning on turning off the sub-pixel. Therefore, in this embodiment, the scanning signal and the data driving signal can be simultaneously introduced to each of the sub-pixels, the charging state of each sub-pixel may be controlled by the scanning signal and the data driving signal, and each sub-pixel may be driven by the data driving signal to display corresponding frame/video. When the plurality of sub-pixels in the pixel driving circuit work together, the plurality of sub-pixels in the display panel may combine different colors to present images/videos of various colors and brightness, and thus the sub-pixels have good controllability in this embodiment, and the display panel can display normal frames under the driving of the scanning signal and the data driving signal.
As an alternative implementation,
In this embodiment, the plurality of scan wires are arranged in an array in the column direction, and M scanning signals may be introduced to each row of sub-pixels. The plurality of sub-pixels may be driven by the scanning signals to be at different working states to display different frames with different colors. At the same time, the corresponding display domain areas of the sub-pixels with the same color in each group of pixels share one scan wire G, such that the pixel driving circuit in this embodiment greatly saves the number of scan wires and simplifies the spatial layout structure of the scan wires G, therefore the pixel driving circuit has a lower cost of scanning and driving.
Exemplarily, in one group of pixels 30 of the pixel driving circuit as shown in
Regarding the at least two data wires D, each column of sub-pixels corresponds to and is connected to two data wires D. In the row direction, any two adjacent domain areas are connected to the same data wire D, and said any two adjacent domain areas are located in different sub-pixels.
The image data may be transmitted to every domain area through the data driving signal on the data wire D can transmit, so as to drive each domain area to display the corresponding light source. In this embodiment, in the row direction, the same data driving signal is introduced to any two adjacent display domain areas in different sub-pixels respectively, and the image display state of the display domain areas in the two sub-pixels may be simultaneously controlled through the data driving signal, so that different sub-pixels in this embodiment can work in coordination. The plurality of sub-pixels cooperate with each other to display a complete image/video, thereby improving the controllability of the plurality of sub-pixels.
As an alternative implementation, at least one data wire D is provided between any two adjacent rows of sub-pixels.
As an alternative implementation, at least one scan wire G is provided between any two adjacent columns of sub-pixels.
In this embodiment, different data wires D transmit different data driving signals, and different scan wires G transmit different scanning signals, and then each sub-pixel may be in a corresponding working state through the data driving signal and the scanning signal. In this embodiment, there is at least one data wire D between two adjacent sub-pixels in the horizontal direction, and at least one scan wire G between two adjacent sub-pixels in the vertical direction. The pixel driving circuit can combine the data wire D and the scan wire G to realize the scanning and driving of the sub-pixels, and implement the charging process of the sub-pixels through the data driving signal and the scanning signal based on an overall display requirement of frames in the display panel, so as to adjust the charging rate of each of the sub-pixels.
Regarding the driving circuit 40, the driving circuit 40 is connected to the scan wire G and the data wire D, and outputs the scanning signal through the scan wire G, and sequentially controls each of the sub-pixels in the same row to turn on; the driving circuit 40 also outputs the data driving signal through the data wire D, and charges the sub-pixels corresponding to the data wire D, so that the polarities of any two adjacent domain areas in the same sub-pixel are different; here M, and M and i are integers.
Referring to the above embodiment of
In this embodiment, each of the sub-pixels is divided into several domain areas, and the domain areas in the sub-pixel are arranged as an array in both the vertical direction and the horizontal direction. Different domain areas are provided with different scanning control methods, and each of the domain areas emits a light source with corresponding color according to the scanning signal and the driving signal. Since the adjacent domain areas in the same sub-pixel have different polarities, then the plurality of domain areas in each of sub-pixels have different potentials, the sub-pixel may acquire light sources with different brightness by combining the plurality of domain areas, and the colors of the frame displayed by the plurality of sub-pixels are diversified, such that the display panel is provided with higher frame display quality. Further, the scanning signal and the data driving signal may be introduced to each of the domain areas, and the working state of the domain area may be controlled through the scanning signal and the data driving signal, and each of the sub-pixels in the pixel driving circuit may achieve different light-emitting states by adjusting the working states of the plurality of domain areas in the same sub-pixel, such that the control and flexibility of each of the sub-pixel is better, thereby facilitating the large-angle display control among the plurality of sub-pixels in the display panel.
In this embodiment, the driving circuit 40 may generates the scanning signals and data driving signals with different electrical levels, and make the plurality of sub-pixels in the display panel turned on sequentially by combining the scanning signals and the data driving signals, to further realize their own charging. The plurality of sub-pixels in the display panel are cyclically scanned and driven, and the plurality of sub-pixels emit corresponding light sources to display a more complete frame and dynamic frames, thus the pixel driving circuit in this embodiment has a relatively simple circuit structure and excellent control effect.
As an alternative implementation, M in this embodiment is an even number.
Each of the sub-pixels includes an even number of domain areas, and the corresponding domain areas in each of the sub-pixels may be charged separately by the scanning signal and the data driving signal, so that all domain areas in the sub-pixel have a uniform charging rate. Therefore, the even number of domain areas in this embodiment makes electric energy distribution of each of the sub-pixels more uniform, and the charging rates of the sub-pixels be better, thereby improving the practical value of the pixel driving circuit.
As an alternative implementation, the sub-pixel in this embodiment may include 2 or 3 domain areas, and the light-emitting state of each of the sub-pixels may be changed through the plurality of domain areas, so as to realize an optimal control effect for the sub-pixels in this embodiment. Alternatively, the technician may set the number of domain areas in each of the sub-pixels according to actual needs, and the sub-pixels in this embodiment can realize the multi-domain potential assignment mode and have excellent compatibility.
In combination with the above description, in this embodiment, through changing the spatial layout of each of the sub-pixels, dividing each of the sub-pixels into at least two domain areas, and separately controlling the working states of adjacent domain areas in each of the sub-pixels by the scanning signals and the data driving signals, the adjacent domain areas in the sub-pixel adopt different signal polarity assignment modes, then each of the sub-pixels has good controllable performance, and each of the domain areas can achieve a best charging rate through the scanning signal and the data driving signal, so as to overcome the problem of insufficient charging rate of sub-pixels in the display panel. At the same time, in this embodiment, by using the configuration rule of the domain areas of two sub-pixels with the same color in the vertical direction, corresponding domain areas of the sub-pixels with the same color in the same group of pixels are connected to the same scan wire G, and the working states of the plurality of domain areas of the sub-pixels with the same color can be simultaneously controlled by one scanning signal, which saves the number of the scan wires G, greatly reduces the cost for scanning and controlling the plurality of sub-pixels, and simplifies the circuit structure of the pixel driving circuit. The sub-pixels in the display panel can be sequentially turned on and charged through the scanning signals and the data driving signals, thereby ensuring that the display panel can present a complete frame. Therefore, in this embodiment, different polarity charging methods for adjacent domain areas in the sub-pixels are realized by using the scanning signals and the data driving signals, thus the quality of large-angle frames of the plurality of sub-pixels is greatly improved, and the user's visual experience is improved. Consequently, the problems in the exemplary technologies, that each of the sub-pixels in the display panel has insufficient charging rate which in turn leads to poor large-angle display quality of the display panel, and the cost for scanning and controlling each of the sub-pixels in the display panel is relatively high, and the user's experience is poor, are effectively solved.
As an alternative implementation,
Regarding the controller 401, the controller 401 generates a control signal.
In this embodiment, the working states of the gate driver 402 and the source driver 403 may be controlled by the control signal, thereby adjusting the light-emitting state of each of the sub-pixels in the display panel. The controller 401 has functions of signal generation and signal conversion. Alternatively, the technician can transmit an operation instruction to the controller 401, and then the controller 401 generates the corresponding control signal according to the operation instruction. The light-emitting state of each of the sub-pixels in the display panel may be adjusted through the control signal to meet visual needs of the technician.
As an alternative implementation, the controller 401 may be implemented by a single-chip microcomputer or CPLD (Complex Programmable Logic Device) in the exemplary technologies. Exemplarily, the controller 401 may be implemented by a single-chip microcomputer, the single-chip microcomputer may be the STC89C52 series. Because the single-chip microcomputer has complete functions and good expandability, therefore in this embodiment, the working state of each of the sub-pixels in the display panel can be controlled in real time through the controller 401, thereby achieving high flexibility and improving the practical value of the pixel driving circuit in this embodiment.
Regarding the gate driver 402, the gate driver 402 is connected between the controller 401 and the scan wires G, and the gate driver 402 generates the scanning signals according to the control signal.
In this embodiment, the controller 401 outputs the control signal to the gate driver 402 to drive the gate driver 402 to generate the scanning signals, and the gate driver 402 outputs the scanning signals to the scan wires G. The scanning signals can control the on state or the off state of each of the sub-pixels in the display panel, therefore in the this embodiment, the scanning and driving process of the sub-pixels in the display panel can be controlled through the gate driver 402, which is easy to operate. Alternatively, the gate driver 402 in this embodiment may be implemented by using the gate driving circuit in the exemplary technologies, where the gate driving circuit includes electronic components such as a transistor and a resistor. The working state of the gate driving circuit may be changed by controlling the transistor to turn on or turn off. Exemplary, when the transistor is turned on, the gate driving circuit generates a corresponding scanning signal, and then the scanning signal may start the scanning and driving process of the display panel, thus the display panel can display complete and dynamic images/videos. Therefore, in this embodiment, the high-frequency scanning process of the plurality of sub-pixels in the display panel can be achieved by the gate driving circuit, which ensures safe and stable operations of the sub-pixels in the display panel.
Regarding the source driver 403, the source driver 403 is connected between the controller 401 and the data wires D, and the source driver 403 generates data driving signals according to the control signal.
In an embodiment, the controller 401 outputs the control signal to the source driver 403, and the working state of the source driver 403 may be changed by the control signal. The source driver 403 can realize functions of video information conversion and transmission, and the data driving signals may be output to the data wires D through the source driver 403, and the data driving signal includes image data. When the sub-pixels in the display panel receive the data driving signals, the sub-pixels display corresponding images/videos according to the data driving signals, therefore the data driving signals generated by the source driver 403 can change the display state of the frames in the display panel to meet the visual requirements of the user.
As an alternative implementation, the source driver 403 may be implemented by a source driver circuit in the exemplary technologies. The source driver circuit includes a MOS tube array, and the MOS tube array includes a plurality of MOS tubes arranged in an array, and the MOS tube array generates the corresponding data driving signals according to a DC power supply, and the data driving signal is used as a transmission medium of the image data. The data driving signals may be continuously introduced to the sub-pixels of the display panel to display complete and continuous images/videos, thereby ensuring normal display effect of the frames in the display panel.
In the pixel driving circuit as shown in
As an alternative implementation, in the row direction, the polarities of any two adjacent domain areas are the same, and said two adjacent domain areas are located in different sub-pixels.
In this embodiment, two adjacent domain areas in different sub-pixels may be simultaneously controlled by the same data driving signal, and the light-emitting states of the two adjacent domain areas may be simultaneously controlled by the scanning signal and data driving signal, and any two adjacent domain areas are provided with the same polarity, which realizes the synchronous control mode of two adjacent sub-pixels in the row direction. On the basis of ensuring the charging rate of the sub-pixels, the cost for scanning and driving the plurality of sub-pixels in the row direction is reduced, such that the effect of the frames of the plurality of pixels is better.
As an alternative implementation, in the row direction, any two adjacent domain areas are connected to the same scan wire G, and said any two adjacent domain areas are located in different sub-pixels.
Exemplarily, taking
As an alternative implementation, in the pixel driving circuit, any two sub-pixels have the same number of domain areas. Therefore, in this embodiment, all sub-pixels in the pixel driving circuit have good controllability performance, and the scanning signals and the data driving signals achieve the best control effect for the plurality of sub-pixels. All the sub-pixels in the display panel serve as a whole capable of achieving the best frame display effect, and the different sub-pixels in the pixel driving circuit are provided with excellent coordination and controllability.
As an alternative implementation, in the horizontal direction, any two adjacent data wires D are provided with different power supply polarities. Since there is the data driving signal in each of the data wires, the data driving signal can drive the domain area into the corresponding working state, so that the different domain areas in the sub-pixel can emit corresponding light sources. Therefore, when the data driving signals in adjacent data wires are provided with different power supply polarities, then the adjacent domain areas in the same sub-pixel are provided with different power polarities and different data driving signals are introduced to the adjacent domain areas in the same sub-pixel. The adjacent domain areas in the same sub-pixel are provided with different polarity charging methods, and the light-emitting state of each of the domain areas in the sub-pixels may be controlled through the data driving signal and scanning signal, so that the sub-pixels is provided with a normal frame display function, thereby improving the quality of large-angle displaying in the display panel.
As an alternative implementation, each of the sub-pixels further includes M switching tubes, each of the switching tubes is correspondingly connected to one domain area, and the domain area is connected to the data wire D and the scan wire G through the switching tube.
In the row direction, any two adjacent switching tubes are connected to the same data wire D, and said any two adjacent switching tubes are located in different sub-pixels.
In the row direction, any two adjacent switching tubes are connected to the same scan wire G, and said any two adjacent switching tubes are located in different sub-pixels.
As an alternative implementation, in the above sub-pixels, the switching tube is a field-effect transistor or a triode. A first conduction terminal of the switching tube is connected to the data wire D, a control terminal of the switching tube is connected to the scan wire G, and a second conduction terminal of the switching tube is connected to the domain area.
In this embodiment, when the scanning signal is introduced to the control terminal of the switching tube, the switching tube may be controlled to be turned on or off through the scanning signal, thereby changing the working state of each of the sub-pixels. Exemplarily, when the scanning signal is output to the control terminal of the switching tube through the scan wire G, the switching tube is turned on by the scanning signal, and the first conduction terminal and the second conduction terminal of the switching tube are directly connected, such that the data wires output the data driving signals to the domain areas through the switching tubes, and the domain areas emit corresponding light sources according to the data driving signals. In the same way, the data driving signals may be introduced to different domain areas in the same sub-pixel respectively to realize the frame/video display function of the sub-pixels. Therefore, in this embodiment, all sub-pixels can work together in cooperation to dynamically display complete frames.
As an alternative implementation, the switching tube is a MOS tube. As shown in
Therefore, in this embodiment, each of the sub-pixels is provided excellent control performance, and the working state of each of the domain areas may be controlled by turning on or off the switching tube, thus the control response speed is very good, and the compatibility is very strong.
As an alternative implementation, in the same sub-pixel, the first domain area and the Mth domain area are connected to different scan wires G, and the first domain area and the Mth domain area are connected to different data wires D.
Exemplarily, taking the pixel driving circuit shown in
As an alternative implementation, the sub-pixel is any one of a blue sub-pixel, a green sub-pixel, and a red sub-pixel.
In this embodiment, each of the sub-pixels may be any one of the three basic colors (red, green, and blue). When the scanning signals and the data driving signals are introduced to the sub-pixels, the scanning signals and the data driving signals may play a role of charging for corresponding sub-pixels to drive the sub-pixels to emit light sources with corresponding colors. The pixels may emit light sources with different color levels by combining the three basic colors, so that the plurality of pixels can present a more coordinated frame with colors, thereby improving the operability of the pixel driving circuit and ensuring the large-angle display quality of the frames.
As an alternatively implementation, in the pixel driving circuit, all sub-pixels in the same row are provided with the same color.
In this embodiment, the scanning and driving process of each of the domain areas in the sub-pixels may be realized by the scanning signals and the data driving signals, and the plurality of sub-pixels in the same row cooperate with each other to achieve corresponding light-emitting effects. Since adjacent sub-pixels in each row have the same color, so there is a lower color level difference between the light emitting effects achieved by the adjacent sub-pixels, which improves the quality of large-angle frames as well as coordination, and brings a better visual experience to the user.
As an alternative implementation, in the same pixel, any two of the sub-pixels have different colors.
In this embodiment, each pixel may achieve various light emitting effects through combining light sources with different colors, which improves the color diversity of each pixel in the pixel driving circuit, so that the pixels in this embodiment are provided with better controllability, and the pixel driving circuit has a wider scope of application and higher practical value.
As an alternative implementation, there are M scan wires G between any two rows of sub-pixels.
As an alternative implementation, there is one data wire D between any two columns of sub-pixels.
In this embodiment, the scan wires G and the data wires D are uniformly arranged in the pixel driving circuit. The scan signals and data signals can realize the scanning and driving process of the plurality of domain areas in each of the sub-pixels, which improves the scanning and driving efficiencies of the plurality of sub-pixels in this embodiment, so that the pixel driving circuit can be in a stable working state, and the circuit layout structure of the pixel driving circuit is simplified, the compatibility is better, thus the manufacturing cost and application cost of the pixel driving circuit is reduced.
As an alternative implementation, each of the sub-pixels includes: two domain areas and two switching tubes. In the row direction, there is one data wire D provided between any two adjacent sub-pixels. In the column direction, there are two scan wires G provided between any two adjacent sub-pixels.
Referring to the structure of the pixel driving circuit as shown in
As an alternative implementation, in the same row of sub-pixels, the first domain areas of the sub-pixels are connected to one scan wire G through the switching tubes, and the second domain areas of the sub-pixels are connected to another scan wire G through the switching tube.
Therefore, in this embodiment, the light-emitting states of one row of sub-pixels may be controlled by the scanning signals in two scan wires G, and the coordination among the plurality of sub-pixels is excellent. In order to better illustrate rules of arrangement of the sub-pixels in the above embodiments, a specific example is used to illustrate the rules of spatial arrangement of the sub-pixels in conjunction with
In the pixel driving circuit as shown in
In this embodiment, each of the sub-pixels includes two domain areas. Exemplarily, the first sub-pixel in the first column of sub-pixels as shown in
In the structure of the pixel driving circuit as shown in
Therefore, according to the pixel driving circuit as shown in
As an alternatively implementation, regarding the sub-pixels of each row, all the sub-pixels have the same color. Taking
As an alternative implementation, in the pixel driving circuit, in the same pixel, any two rows of sub-pixels have different colors, and the color of each of the sub-pixels is any one of red, green, and blue.
In this embodiment, one pixel may combine three basic colors (red, green, and blue) to display images/videos with different colors and brightness, the frames in the display panel show diversity, and the plurality of sub-pixels may be driven by the scanning signals and the data driving signals to achieve large-angle display, thereby improving the frame quality of the display panel, and bringing a good visual experience to the user. Exemplarily, in the same pixel, the colors of three sub-pixels adjacent in the column direction are red, green and blue respectively.
As an alternative implementation, each group of pixels includes two pixel groups arranged in an array in the column direction, and each of the pixel groups includes a first pixel group, a second pixel group, and a third pixel group. Each of the first pixel group, the second pixel group, and the third pixel group include one row of sub-pixels, and each row of the sub-pixels is connected to two scan wires G correspondingly.
In the same group of pixels, the jth domain area of the sub-pixels in the first pixel group of the previous pixel group and the jth domain area of the sub-pixels in the first pixel group of the next pixel group are connected to the same scan wire G.
In the same group of pixels, the jth domain area of the sub-pixels in the second pixel group of the previous pixel group and the jth domain area of the sub-pixels in the second pixel group of the next pixel group are connected to the same scan wire G.
In the same group of pixels, the jth domain area of the sub-pixels in the third pixel group of the previous pixel group and the jth domain area of the sub-pixels in the third pixel group of the next pixel group are connected to the same scan wire G.
In this embodiment, 1≤j≤2 and j is an integer.
Exemplarily,
As an alternative implementation, in the row direction, any two adjacent domain areas are provided with the same power polarity, and said any two adjacent domain areas are located in different sub-pixels.
Exemplarily, referring to
In this embodiment, in the row direction, adjacent domain areas in different sub-pixels are connected to the same data wire D and to the same scan wire G, so that the domain areas in the two adjacent sub-pixels may be driven by the same data driving signal and the same scanning signal to be at a stable working state, which reduces the scanning and driving cost of the pixel driving circuit, improves the charging efficiency of the sub-pixels in this embodiment, improves insufficient charging rates of the sub-pixels in the display panel, and effectively improves the large-angle display quality of the display panel, therefore the user's visual experience is better.
As an alternative implementation, in the column direction, any two adjacent domain areas are connected to different scan wires G, and said any two adjacent domain areas are located in different sub-pixels.
Exemplarily, referring to
An embodiment of the present application provides a pixel driving circuit, which includes a plurality of sub-pixels, at least 3M scan wires, at least two data wires, and a driving circuit.
Regarding the plurality of sub-pixels, the plurality of sub-pixels are regularly arranged into at least six rows and at least one column. At least three consecutive sub-pixels located in the same column constitute one pixel, and every two rows of pixels form one group, and each sub-pixel includes M domain areas.
Regarding the at least 3M scan wires, each row of sub-pixels corresponds to M scan wires, and in each group of pixels, the ith domain areas of the sub-pixels with the same color are connected to the same scan wire.
Regarding the at least two data wires, each column of sub-pixels is correspondingly connected to two data wires, and in the row direction, any two adjacent domain areas are connected to the same data wire, and the any two adjacent domain areas are located in different sub-pixels.
The driving circuit is connected to the scan wires and the data wires, outputs scan signals through the scan wires to sequentially control each of the sub-pixels in the same row to turn on, and outputs data driving signals through the data wires to charge the sub-pixels correspondingly connected to the data wires, such that the polarities of any two adjacent domain areas in the same sub-pixel are different.
In the row direction, the polarities of any two adjacent domain areas are the same, and the any two adjacent domain areas are located in different sub-pixels.
In the row direction, any two adjacent domain areas are connected to the same scan wire, and the any two adjacent domain areas are located in different sub-pixels.
In the same sub-pixel, the first domain area and the Mth domain area are connected to different scan wires, and the first domain area and the Mth domain area are connected to different data wires.
Where M≥2, 1≤i≤M, and M and i are integers.
The pixel driving circuit 701 includes a plurality of sub-pixels, at least 3M scan wires, at least two data wires, and a driving circuit.
Regarding the plurality of sub-pixels, the plurality of sub-pixels are regularly arranged into at least six rows and at least one column. At least three consecutive sub-pixels located in the same column constitute one pixel, and every two rows of pixels form one group, and each sub-pixel includes M domain areas.
Regarding the at least 3M scan wires, each row of sub-pixels corresponds to M scan wires, and in each group of pixels, the ith domain areas of the sub-pixels with the same color are connected to the same scan wire.
Regarding the at least two data wires, each column of sub-pixels is correspondingly connected to two data wires, and in the row direction, any two adjacent domain areas are connected to the same data wire, and the any two adjacent domain areas are located in different sub-pixels.
The driving circuit is connected to the scan wires and the data wires, outputs scan signals through the scan wires to sequentially control each of the sub-pixels in the same row to turn on, and outputs data driving signals through the data wires to charge the sub-pixels correspondingly connected to the data wires, such that the polarities of any two adjacent domain areas in the same sub-pixel are different.
Where M≥2, 1≤i≤M, and M and i are integers.
Referring to
To sum up, the pixel driving circuit in the present application adopts a design of a plurality of domain areas of the sub-pixels, and the plurality of sub-pixels are presented with a specific rule of spatial arrangement, and the domain areas in each of the sub-pixels are provided with different polarity assignment modes, thus the charging rate of each of the sub-pixels in the display panel is improved, the scanning and controlling cost of the plurality of sub-pixels is reduced, and the large-angle display effect of the display panel is improved, thereby bringing the user with a good visual experience. Therefore, the pixel driving circuit in the present application has extremely important positive significance for the development of display panels, the frame display effect of the display panel can meet the needs of users, so the pixel driving circuit in the present application has important industrial production value.
The above description only describes alternative embodiments of the application, and is not used to limit the present application. For those skilled in the art, the present application may have various modifications and changes, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201821869211.9 | Nov 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/121234 | 12/14/2018 | WO | 00 |
