CN112581901A

CN112581901A - Display panel, display driving method thereof and electronic device

Info

Publication number: CN112581901A
Application number: CN202011638406.4A
Authority: CN
Inventors: 索磊; 高娅娜
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-03-30
Anticipated expiration: 2040-12-31
Also published as: CN112581901B

Abstract

The technical scheme of the application can determine whether the sub-display area meets the compensation condition or not based on gray scale data of sub-pixels in the sub-display area, and can perform compensation display driving on the sub-pixels in the sub-display area meeting the compensation condition in the holding period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under low refreshing frequency can be avoided.

Description

Display panel, display driving method thereof and electronic device

Technical Field

The present disclosure relates to the field of electronic devices, and more particularly, to a display panel, a display driving method thereof, and an electronic device.

Background

With the continuous development of science and technology, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.

An important component of an electronic device that implements a display function is a display panel. When a display panel is driven to display images, the problem of picture jitter can occur under the condition of low refreshing frequency in the prior art.

Disclosure of Invention

In view of the above, the present application provides a display panel, a display driving method thereof and an electronic device, and the scheme is as follows:

a display panel, the display panel comprising:

the array substrate comprises a display area and a frame area surrounding the display area;

the driving controller, the scanning driving circuit and the data driving circuit are arranged in the frame area; the scanning drive circuit and the data drive circuit are respectively connected with the drive controller;

a plurality of sub-pixels arranged in an array and arranged in the display area; the sub-pixels are connected with the data driving circuit through data lines;

the display area comprises a plurality of sub-display areas, and the sub-display areas comprise a plurality of rows of the sub-pixels which are arranged in series;

the scanning driving circuit comprises a plurality of sub-scanning driving circuits which are in one-to-one correspondence with the sub-display areas, and the sub-scanning driving circuits are connected with the sub-pixels in the corresponding sub-display areas through signal lines;

in a current data frame, the drive controller is configured to determine whether the sub-display area meets a compensation condition based on gray scale data of sub-pixels in the sub-display area, if so, control the sub-scanning drive circuit and the data drive circuit in a holding period of the current data frame and a next data frame to perform compensation display drive on the sub-pixels in the sub-display area, and if not, control the scanning drive circuit and the data drive circuit by the drive controller to enable the sub-pixels in the sub-display area to hold the gray scale data of the current data frame.

In the display panel according to the technical scheme of the application, the drive controller can determine whether the sub-display area meets the compensation condition based on the gray scale data of the sub-pixels in the sub-display area, and can perform compensation display drive on the sub-pixels in the sub-display area meeting the compensation condition in the holding period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under the low refreshing frequency can be avoided.

The present application also provides a display driving method of a display panel, the display panel includes a display area and a frame area surrounding the display area, the display area has a plurality of sub-pixels arranged in an array, the frame area has a data driving circuit and a scan driving circuit, the display area has a plurality of sub-display areas, the sub-display areas have a plurality of rows of the sub-pixels arranged in succession, the display driving method includes:

in the current data frame, obtaining gray scale data of sub-pixels in the sub-display area;

judging whether the sub-display area meets a compensation condition or not based on the gray scale data of the sub-pixels in the sub-display area in the current data frame;

if yes, controlling the scanning driving circuit and the data driving circuit to perform compensation display driving on the sub-pixels in the holding time interval of the current data frame and the next data frame;

if not, in the holding time interval of the current data frame and the next data frame, controlling the sub-pixels in the sub-display area to hold the gray scale data of the current data frame through the scanning driving circuit and the data driving circuit.

In the display driving method in the technical scheme of the application, whether the sub-display area meets the compensation condition can be determined based on the gray scale data of the sub-pixels in the sub-display area, and the sub-pixels in the sub-display area meeting the compensation condition can be subjected to compensation display driving in the holding period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under the low refreshing frequency can be avoided.

The present application also provides an electronic device, comprising: the display panel is provided.

The electronic device provided by the technical scheme of the application comprises the display panel, the controller in the display panel can determine whether the sub-display area meets the compensation condition or not based on the gray scale data of the sub-pixels in the sub-display area, and can perform compensation display driving on the sub-pixels in the sub-display area meeting the compensation condition in the holding time period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under the low refreshing frequency can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings used in the description of the embodiments or prior arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

The structures, proportions, and dimensions shown in the drawings and described in the specification are for illustrative purposes only and are not intended to limit the scope of the present disclosure, which is defined by the claims, but rather by the claims, it is understood that these drawings and their equivalents are merely illustrative and not intended to limit the scope of the present disclosure.

FIG. 1 is a schematic diagram of a pixel circuit;

FIG. 2 is a graph of brightness versus time for an OLED display screen at a low refresh frequency;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a sub-scanning circuit according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a first scan circuit and a second scan circuit according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram illustrating a connection manner between a sub-pixel and a data driving circuit according to an embodiment of the present disclosure;

fig. 7 is a schematic flowchart of a display driving method according to an embodiment of the present disclosure;

fig. 8-12 are timing diagrams provided in accordance with embodiments of the present application.

Detailed Description

Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown, and in which it is to be understood that the embodiments described are merely illustrative of some, but not all, of the embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Taking an OLED display panel as an example, the OLED display panel has a plurality of sub-pixels, each of the sub-pixels includes an OLED and a pixel circuit connected thereto, the pixel circuit is shown in fig. 1, fig. 1 is a schematic structural diagram of the pixel circuit, and the pixel circuit has a 7T1C structure and includes a first transistor M1 to a seventh transistor M7 and a storage capacitor Cst. In the embodiment of the present application, the pixel circuit of 7T1C is taken as an example for explanation, and it is obvious that the specific structure of the pixel circuit is not limited to the mode shown in fig. 1, and may be a 3T1C structure or other structures, and the pixel circuit may be any one of the existing circuit structures, which is not limited in the embodiment of the present application.

The first transistor M1 has a first electrode receiving an anode voltage PVDD, a gate connected to the node N5, and a second electrode connected to the node N2. The first electrode of the second transistor M2 receives the data signal VDATA, the gate thereof receives the second SCAN signal SCAN2, the gate thereof is connected to the gate of the fourth transistor M4, and the second electrode thereof is connected to the node N2. The third transistor M3 is a driving transistor, and has a gate connected to the node N1, a first electrode connected to the node N2, and a second electrode connected to the node N3. The fourth transistor M4 has a first electrode connected to the node N1 and a second electrode connected to the node N3. The fifth transistor M5 has a first electrode receiving the reference voltage VREF, a gate receiving the first SCAN signal SCAN1, and a second electrode connected to the node N1. The sixth transistor M6 has a first electrode connected to the node N3, a gate to which the light emission signal EMIT is input, and a second electrode connected to the node N4. The seventh transistor M7 has a first electrode receiving the reference voltage VREF, a gate receiving the second SCAN signal SCAN2, and a second electrode connected to the node N4. The node N4 is connected to the anode of the OLED, and the cathode of the OLED is inputted with a cathode voltage PVEE.

In some application fields, the power consumption of the OLED display screen can be reduced by reducing the refresh frequency. For example, with the development of the OLED display panel in the field of wearable devices, the power consumption problem becomes a bottleneck that plagues the wearable devices, and the mainstream solution at present is to reduce the power consumption of the OLED display panel by reducing the screen refresh rate. But causes a problem of picture jitter when the refresh rate is reduced to 15Hz or even lower.

As shown in fig. 2, fig. 2 is a graph of luminance versus time of the OLED display panel at a low refresh frequency, where the horizontal axis represents time in ms (millisecond), the vertical axis represents luminance in nits (nit), and in the 255-gray-scale frame holding mode at a low refresh frequency, there is a problem of image jitter. The reason for the picture jitter is that the potential holding time side length of the node N1 and the node N3.

In order to solve the above problem, an embodiment of the present application provides a display panel, a display driving method thereof, and an electronic device, where whether a sub-display area satisfies a compensation condition is determined based on gray scale data of sub-pixels in the sub-display area, if so, the sub-scan driving circuit and the data driving circuit are controlled in a holding period of a current data frame and a next data frame to perform compensation display driving on the sub-pixels in the sub-display area, and if not, the driving controller controls the scan driving circuit and the data driving circuit to enable the sub-pixels in the sub-display area to hold the gray scale data of the current data frame, so as to avoid a picture shaking problem of the display panel at a low refresh frequency.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 3, fig. 3 is a schematic structural diagram of a display panel provided in an embodiment of the present application, where the display panel includes: the display device comprises an array substrate 11, wherein the array substrate 11 comprises a display area 111 and a frame area 112 surrounding the display area 111; a driving controller 12, a scan driving circuit 13 and a data driving circuit 14 disposed in the frame area 112; the scan driving circuit 13 and the data driving circuit 14 are respectively connected to the driving controller 12; a plurality of sub-pixels P arranged in an array in the display region 111, the sub-pixels P being connected to the DATA driving circuit 14 through DATA lines DATA; the display region 111 includes a plurality of sub-display regions 100, and the sub-display regions 100 include a plurality of rows of the sub-pixels P arranged in series; the scan driving circuit 13 includes a plurality of sub-scan driving circuits 131 corresponding to the sub-display regions 100 one by one, and the sub-scan driving circuits 131 are connected to the sub-pixels P in the corresponding sub-display regions 100 through signal lines 132.

The display panel in the embodiment of the application can be an OLED display panel, and the sub-pixel P comprises an OLED and a pixel circuit. In fig. 3, the display area 11 is sequentially divided into four sub-display areas 100 for illustration, and the number of the sub-display areas 100 may be set to be any number based on the requirement, and is not limited to the four sub-display areas shown in fig. 3.

In a current data frame, the driving controller 12 is configured to determine whether the sub-display area 100 satisfies a compensation condition based on gray scale data of sub-pixels P in the sub-display area 100, if so, control the sub-scanning driving circuit 131 and the data driving circuit 14 in a holding period of the current data frame and a next data frame to perform compensation display driving on the sub-pixels P in the sub-display area 100, and if not, the driving controller 12 controls the sub-scanning driving circuit 131 and the data driving circuit 14 to enable the sub-pixels P in the sub-display area 100 to hold gray scale data of the current data frame. And keeping the gray scale data of the current data frame as the data signal for not refreshing the sub-pixel P.

In the display panel according to the technical solution of the present application, the driving controller 12 can determine whether the sub-display area 100 meets the compensation condition based on the gray-scale data of the sub-pixel P in the sub-display area 100, and can perform compensation display driving on the sub-pixel P in the sub-display area 100 meeting the compensation condition in the holding period of the current data frame and the next data frame, so as to avoid the problem of image jitter of the display panel at a low refresh frequency.

And a holding period is arranged between two adjacent data frames, and the holding period comprises at least one holding frame. In the embodiment of the present application, the sub-display area 100 that satisfies the compensation condition can be compensated and driven in the holding frame, and the data signal is written in, so as to avoid the problem of image jitter caused by the fact that the gray scale data of the current frame cannot be held due to the comparison of more sub-pixel P gray scale data in the sub-display area 100 that satisfies the compensation condition.

In this embodiment, in order to reduce the width of the frame region 112, a part of the sub-scanning circuits 131 may be disposed on a first side of the display region 111, and another part of the sub-scanning circuits 131 may be disposed on a second side of the display region 111, where the first side and the second side are the frame regions 112 on two opposite sides of the display region 111. As shown in fig. 3, in the direction from the first row of sub-pixels P to the last row of sub-pixels P, n sub-display regions 100 are disposed, and the n sub-display regions are sequentially from the 1 st sub-display region to the nth sub-display region, where n is a positive integer greater than 1. The sub-scanning circuit 131 correspondingly connected with the sub-display area of the 2j-1 th is arranged in the left side frame area, and the sub-scanning circuit 131 correspondingly connected with the sub-display area of the 2j is arranged in the right side frame area. j is a positive integer, and 2j is not greater than n.

As shown in fig. 3, the driving controller 12 is configured to provide an independent first SCAN-on signal STV1 for each of the sub-SCAN driving circuits 131, to control the sub-SCAN driving circuits 131 to provide a first SCAN signal SCAN1 and a second SCAN signal SCAN2 for the sub-pixels P in the corresponding sub-display area 100, to provide an independent second SCAN-on signal STV2 for each of the sub-SCAN driving circuits 131, and to control the sub-SCAN driving circuits 131 to provide an emitting signal EMIT for the sub-pixels P in the corresponding sub-display area 100.

In this way, the driving controller 12 can independently control each sub-scanning circuit 131 to scan the sub-pixels P in the corresponding sub-display area 100 row by row based on the first scan-on signal STV1, and can also independently control each sub-scanning circuit 131 to provide the light-emitting signal EMIT for the sub-pixels P in the corresponding sub-display area 100 row by row based on the second scan-on signal STV 2.

In the display panel, the sub-pixels P are arranged in an array. The same column of sub-pixels P is connected to the same DATA line DATA for inputting the DATA signal VDATA. The signal line 132 includes: a first scanning signal line, a second scanning signal line, and a light emitting signal line. The same sub-pixel P is connected to the same first SCAN signal line to input the first SCAN signal SCAN 1. The same row of sub-pixels P are connected to the same second SCAN signal line for inputting the second SCAN signal SCAN 2. The same row of sub-pixels P is connected to the same light emitting signal line to output a light emitting signal EMIT.

In the display panel according to the embodiment of the present application, the structure of the sub-scanning circuit 131 can be as shown in fig. 4.

As shown in fig. 4, fig. 4 is a schematic structural diagram of a sub-scanning circuit according to an embodiment of the present application, where the sub-scanning driving circuit 131 includes: a first SCAN circuit 21, wherein the first SCAN circuit 21 is configured to sequentially provide the first SCAN signal SCAN1 and the second SCAN signal SCAN2 for each row of sub-pixels P in the correspondingly connected sub-display area 100 based on the input first SCAN-on signal STV1, first SCAN clock signal CK1 and second SCAN clock signal XCK 1; a second scan circuit 22, wherein the second scan circuit 22 is configured to sequentially provide the light emitting signal EMIT for each row of the sub-pixels P in the correspondingly connected sub-display area 100 based on the second scan start signal STV2, the third scan clock signal CK2 and the fourth scan clock signal XCK 2. The first scan clock signal CK1 and the second scan clock signal XCK1 have opposite phases. The third scan clock signal CK2 and the fourth scan clock signal XCK2 have opposite phases.

The display panel of the present application is configured to have n sub-display regions 100, and correspondingly n sub-scanning driving circuits 131. It is possible to set n first start signal lines for sequentially providing the independent first scan-on signals STV1 to the respective sub-scan driving circuits 131. It is possible to set n second start signal lines for sequentially providing the independent second scan start signals STV2 to the respective sub-scan driving circuits 131. It is possible to configure that there are four scan clock signal lines, which are shared by all the sub-scan driving circuits 131, for sequentially outputting the first scan clock signal to the fourth scan clock signal.

The driving controller 12 controls each of the first SCAN circuits 21 according to the first SCAN-on signal STV1, the first SCAN clock signal CK1, and the second SCAN clock signal XCK1, and SCANs each row of the subpixels P in the corresponding sub-display area 100 line by line according to the first SCAN signal SCAN1 and the second SCAN signal SCAN 2. The driving controller 12 controls the second scanning circuit 22 through the second scanning start signal STV2 to provide the light emitting signal EMIT for each row of the sub-pixels P in the corresponding sub-display area 100. The driving controller 12 can write data signals to only the sub-display areas 100 satisfying the compensation condition based on the timing requirement of the display areas 100 through each scan start signal and the scan clock signal. For example, four sub-display areas 100 are included, and the four sub-display areas 100 are sequentially set as an area a, an area B, an area C, and an area D. If it is determined that the C region satisfies the compensation condition. The compensation method can be used in the following two ways.

Each of the first SCAN circuits 21 may be controlled by a first SCAN start signal STV1, a first SCAN clock signal CK1, and a second SCAN clock signal XCK1, and each row of the subpixels P in the a, B, C, and D regions may be sequentially scanned line by the first SCAN signal SCAN1 and the second SCAN signal SCAN2, and in this process, the second SCAN circuit 22 may be controlled by a second SCAN start signal STV2 to sequentially supply the light emission signal EMIT to each row of the subpixels P in the a, B, C, and D regions. The data driving circuit 14 supplies the data signal VDATA to its corresponding sub-pixel P only when the C-region is scanned and the emission signal EMIT is input, and is turned off when the a-region, the B-region, and the D-region are scanned and no data signal VDATA is output.

Or, at the beginning of the holding period, each of the first SCAN circuits 21 is controlled by the first SCAN-on signal STV1, the first SCAN clock signal CK1 and the second SCAN clock signal XCK1, each row of the sub-pixels P in the C region is scanned by row by the first SCAN signal SCAN1 and the second SCAN signal SCAN2, and in the process, the second SCAN circuit 22 is controlled by the second SCAN-on signal STV2 to supply the light-emitting signal EMIT to each row of the sub-pixels P in the C region. The data driving circuit 14 provides the data signal VDATA to the corresponding sub-pixel P when the C region is scanned and the light emitting signal EMIT is inputted.

As shown in fig. 5, fig. 5 is a schematic structural diagram of a first scan circuit and a second scan circuit according to an embodiment of the present application, and in combination with fig. 4 and fig. 5, in the same sub-scan circuit 131, the first scan circuit 21 includes a plurality of cascaded first shift registers. The first shift register of the first stage inputs a first SCAN-on signal STV1, two adjacent rows of sub-pixels P are connected to the same first shift register, and a SCAN signal SCAN output by the first shift register includes: the first SCAN signal SCAN1 input for the previous row of sub-pixels P, and the second SCAN signal SCAN2 input for the next row of sub-pixels P. The second scanning circuit 22 includes a plurality of cascaded second shift registers, and the second shift registers correspond to the rows of the sub-pixels P in the corresponding sub-display area 100 one to one. The first shift register of the first stage inputs the second scan-on signal STV2, and the second shift register of the previous stage outputs the light-emitting signal EMIT as an input signal of the second shift register of the next stage.

In the manner shown in fig. 5, the description will be made by taking an example in which each row of sub-pixels P individually corresponds to one stage of the second shift register. In other embodiments, the second shift registers may be arranged in every two rows, and in this case, in the same sub-display area 100, the number of the sub-pixels P is twice as many as the number of the second shift registers in the corresponding sub-driving circuits.

In the display panel according to the embodiment of the present application, the sub-display area 100 that satisfies the compensation condition is set as a sub-display area to be compensated, and the sub-display area 100 that does not satisfy the compensation condition is set as a non-compensation sub-display area.

Taking the example that the display area 111 includes three sub-display areas 100 arranged in sequence, the three sub-display areas 100 are respectively set as an area a, an area B and an area C in sequence, the area a and the area C are set as sub-display areas to be compensated that satisfy compensation conditions, and the area B is a non-compensation sub-display area that does not satisfy compensation conditions. The compensation method will be described below with reference to a timing chart.

The first compensation mode is as follows: if the sub-display area to be compensated and the non-compensated sub-display area exist at the same time, the driving controller 12 is configured to control the scan driving circuit 13 to sequentially scan all the sub-display areas 100 through the first scan start signal STV1, the second scan start signal STV2, the first clock signal CK1 to the fourth clock signal XCK2, and control the data driving circuit 14 to input the data signal to the sub-pixel P in the sub-display area to be compensated only when the sub-display area to be compensated is scanned.

In the first compensation manner, if the sub-display area to be compensated and the non-compensated sub-display area exist at the same time, the driving controller 12 may control the sub-scanning circuit 131 to sequentially scan all the sub-display areas 100 according to a set scanning sequence. For the uncompensated sub-display region, the data driving circuit 14 does not output a data signal in the process that the uncompensated sub-display region is scanned, so that the data signal of the sub-pixel P in the uncompensated sub-display region is not updated, and the data of the current data frame is maintained based on the self node potential, and the gray scale data of the current data frame is maintained in the maintaining period of the current data frame and the next data frame. For the sub-display area to be compensated, the data driving circuit 14 outputs a data signal during the scanning process of the sub-display area to be compensated, and provides the data signal for the scanned sub-pixel P. In this process, a data signal is written into the sub-pixel P in the display area to be compensated in the holding period, so as to overcome the problem of image jitter caused by the fact that the sub-pixel P in the sub-display area to be compensated cannot maintain the node potential in the holding period, and a timing chart at this time may be as shown in fig. 8.

As shown in fig. 8, fig. 8 is a timing diagram provided in the present embodiment, in which a scan start signal with a start pulse is sequentially input to the areas a to C, and a scan signal with a timing sequence is generated to sequentially perform timing scan on the areas a to C. When scanning each row of sub-pixels in the area A, before the falling edge of the scanning signal, the data clock signal CKH outputs a timing pulse signal, the data signal is written into the corresponding data line, and when the scanning signal is an effective level pulse, the data signal is written into each row of sub-pixels in the area A. When scanning each row of sub-pixels in the B region, the data clock signal CKH keeps high level, at this time, the data driving circuit 14 does not output data signals, and the sub-pixels in the B region keep gray scale data of the current frame. When scanning each row of sub-pixels in the C area, before the falling edge of the scanning signal, the data clock signal CKH outputs a timing pulse signal, the data signal is written into the corresponding data line, and when the scanning signal is an effective level pulse, the data signal is written into each row of sub-pixels in the C area. Therefore, data signals can be written into the sub-pixels in the area A and the area C which meet the compensation condition, and the problem of picture jitter caused by the fact that the sub-pixels in the area A and the area C cannot keep current frame gray scale data is avoided.

The second compensation mode is as follows: if the sub-display area to be compensated and the non-compensated sub-display area exist at the same time, the driving controller 12 is configured to control the scan driving circuit 13 to sequentially scan only the sub-display area to be compensated through the first scan start signal STV1, the second scan start signal STV2, the first clock signal CK1 to the fourth clock signal XCK2, and control the data driving circuit 14 to input a data signal to the sub-pixel P in the sub-display area to be compensated when the sub-display area to be compensated is scanned.

In the second compensation manner, if the sub-display region to be compensated and the non-compensation sub-display region exist at the same time, the driving controller 12 may control the sub-scanning circuit 131 to sequentially scan all the sub-display regions to be compensated according to a set scanning sequence, the scanning start signal corresponding to the non-compensation sub-display region is at a high level, the scanning signal and the light-emitting signal output a high level continuously, and the data driving circuit 14 is controlled to input the data signal to the sub-pixel P in the sub-display region to be compensated when the sub-display region to be compensated is scanned, where a timing chart at this time may be as shown in fig. 9.

As shown in fig. 9, fig. 9 is another timing diagram provided in this embodiment, in this manner, a scan-on signal having a scan-on pulse is provided for the area a separately, a sub-scan driving circuit corresponding to the area a provides a time-sequential scan signal, and rows of sub-pixels in the area a are scanned line by line, before a falling edge of the scan signal, a data clock signal CKH outputs a time-sequential pulse signal, and writes a data signal into a corresponding data line, and when the scan signal is an active level pulse, writes a data signal into rows of sub-pixels in the area a. After the scanning of the area a is completed, the scanning start signal in the sub-scanning circuit corresponding to the area B is continuously set to the high level, the scanning signal and the light-emitting signal continuously output the high level, the data clock signal CKH is set to the high level, at this time, the data driving circuit 14 does not output the data signal, and the sub-pixels in the area B maintain the gray scale data of the current frame. And then, providing a scanning start signal with a start pulse for the area C, providing a time sequence scanning signal through a sub-scanning driving circuit corresponding to the area A, scanning each row of sub-pixels in the area C line by line, outputting a time sequence pulse signal by a data clock signal CKH before the falling edge of the scanning signal, writing the data signal into a corresponding data line, and writing the data signal into each row of sub-pixels in the area C when the scanning signal is an effective level pulse. Therefore, data signals can be written into the sub-pixels in the area A and the area C which meet the compensation condition, and the problem of picture jitter caused by the fact that the sub-pixels in the area A and the area C cannot keep current frame gray scale data is avoided. In this embodiment, the sub-scanning driving circuits corresponding to the sub-display regions A, B, C need to be provided with the independent first scanning start signals STV 1. Before the data driving circuit correspondingly outputs the data signal corresponding to the area A, an effective level pulse is output to a first scanning start signal STV1 corresponding to the area A, and the data signal is refreshed on the area A; when the data signal corresponding to the area A is output, outputting a direct current cut-off level to a first scanning start signal STV1 corresponding to the area B, so that a sub-scanning driving circuit corresponding to the area B outputs a direct current cut-off signal, and sub-pixels in the area B keep gray scale data of the current frame; before the data driving circuit correspondingly outputs the data signal corresponding to the C area, an effective level pulse is output to a first scanning start signal STV1 corresponding to the C area, and the data signal is refreshed on the C area;

if the areas A to C are all the uncompensated sub-display areas, the data signals are not refreshed in the keeping time period from the areas A to C. At this time, the timing in the holding period may be as shown in fig. 10.

As shown in fig. 10, fig. 10 is still another timing diagram provided by the embodiment of the present application, in this manner, the scan start signal of each sub-scan driving circuit is continuously set to a high level, so that the output scan signal and the light-emitting signal are continuously set to a high level, in this process, the data clock signal CKH is continuously set to a high level, at this time, the data driving circuit does not output the data signal, and the sub-pixels in the regions a to C cannot refresh the data signal, so as to maintain the gray scale data of the current frame.

The first judgment mode is as follows: in the current data frame, if the average value of all the sub-pixel P gray scale data in the sub-display area 100 is smaller than a reference threshold, the compensation condition is satisfied, the sub-display area 100 is a sub-display area to be compensated, otherwise, the compensation condition is not satisfied, and the sub-display area 100 is a non-compensation sub-display area. The reference threshold is a positive integer less than 225.

In the first judgment mode, whether a large number of sub-pixels P with gray scale data smaller than the reference threshold exist can be determined by the average value of all the sub-pixels P in the sub-display area 100, if so, it indicates that the sub-display area 100 has a problem of causing picture shaking in the retention period, the sub-display area 100 is a sub-display area to be compensated, and the driving controller 12 can perform compensation display driving based on the compensation mode, so as to solve the picture shaking problem.

In the embodiment of the present application, the hold period may include at least one hold frame. If the refresh frequency is 30Hz, a hold frame may be provided between two adjacent data frames, i.e. the hold period comprises one hold frame. If the refresh frequency is 15Hz, three hold frames between two adjacent data frames may be provided, i.e. the hold period comprises three hold frames.

If the hold period has one hold frame, the timing control of the hold frame at this time can be as described in the above embodiment.

If the sustain frame has a plurality of sustain frames, if the sub-display area satisfies a compensation condition. And selecting one or more frames of the plurality of holding frames to refresh the data of the sub-display area to be compensated based on the gray scale average value of all the sub-pixels smaller than the preset gray scale value in the sub-display area to be compensated.

Taking the example that the display area 111 includes three sub-display areas 100 arranged in sequence, the three sub-display areas 100 are respectively set as an area a, an area B and an area C in sequence, the area a is set as a sub-display area to be compensated that satisfies compensation conditions, the area B and the area C are non-compensation sub-display areas that do not satisfy compensation conditions, and the set holding period includes three holding frames F1 to F3. At this time, the timing chart may be as shown in fig. 11 and 12.

As shown in fig. 11, fig. 11 is a timing diagram provided in the embodiment of the present application. In the hold frame F1, data signals are written in the areas a and C, data is not written in the area B, and in the hold frame F2 and the hold frame F3, data line signals are not written in the areas a, B, and C. In the process, the B area is an uncompensated sub-display area, sub-pixels in the B area always maintain the gray scale data of the current data frame, the a area and the C area need to be written with compensation data once in the maintaining frame F1, and then the gray scale data of the current data frame can be maintained in the maintaining frame F2 and the maintaining frame F3.

If the gray-scale average value of all the sub-pixels smaller than the first gray-scale value in the sub-display area to be compensated is smaller than the second gray-scale value, the characterization compensation sub-display area can maintain the gray-scale data of the current data frame in the maintaining frame F2 and the maintaining frame F3 through one data writing in the maintaining frame F1.

As shown in fig. 12, fig. 12 is a timing diagram provided in the embodiment of the present application. In the hold frame F1, the data signals are written in the areas a and C, and no data writing is performed in the area B. In the hold frame F2 and the hold frame F3, no data line signal is written to the areas a, B, and C. In the hold frame F2, data is not written in the areas a, B, and C. In the hold frame F3, the data signals are written in the areas a and C, and no data writing is performed in the area B. In this process, the B region is an uncompensated sub-display region, the sub-pixels in the B region always hold the gray scale data of the current data frame, and the a region and the C region perform one-time data writing in the hold frame and cannot continuously hold the gray scale data of the current data frame in the hold frame F2 and the hold frame F3, so that data needs to be written again in the hold frame F3.

If the gray-scale average value of all the sub-pixels smaller than the first gray-scale value in the sub-display area to be compensated is smaller than the second gray-scale value, the characterization compensation sub-display area is subjected to data writing once in the retention frame F1, cannot continuously retain the gray-scale data of the current data frame in the retention frame F2 and the retention frame F3, and needs to write data again in the retention frame F3.

The second gray scale value is smaller than the first gray scale value, and the first gray scale value and the second gray scale value can be obtained through an actual display test of the display screen.

The second judgment method is as follows: in the current data frame, if the number of sub-pixels in the sub-display area 100 whose gray scale data is smaller than the first threshold is greater than a second threshold, and the average value of the gray scale data of all the sub-pixels in the sub-display area is smaller than a reference threshold, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied. The first threshold is a positive integer less than 225. The second threshold is a set constant smaller than the total number of sub-pixels P in the sub-display area 100.

In the second determination manner, it is avoided that the average value of the gray scale data is increased due to the existence of a large number of sub-pixels P with higher gray scale data in the sub-display area 100, and the sub-display area to be compensated can be accurately determined.

If the first threshold is set to 180, the second threshold is set to 50%, the reference threshold is 150, and if a sub-display area meets the compensation condition, it indicates that the number of sub-pixels with a gray scale value smaller than 180 in the sub-display area accounts for more than 50% of the number of all sub-pixels in the sub-display area, and the gray scale average value of all sub-pixels is smaller than 150, and it can represent that there are more sub-pixels with low gray scale data in the sub-display area, so that the sub-display area can be accurately compensated and driven to display.

The third judgment mode is as follows: in the current data frame, if the mean value of the gray scale data of all the first sub-pixels in the sub-display area is not larger than a third threshold value, the compensation condition is met, otherwise, the compensation condition is not met; the first sub-pixel is a sub-pixel with gray scale data smaller than a fourth threshold value, and the fourth threshold value is larger than the third threshold value; in the sub-display area, the number of the first sub-pixels is not less than a fifth threshold. The third threshold and the fourth threshold are both positive integers less than 225.

In the third determination method, it can be avoided that the average value of the gray scale data is increased due to the existence of a large number of sub-pixels P with higher gray scale data in the sub-display area 100, and the sub-display area to be compensated can be accurately determined.

The fourth judgment method: a sub-display area 100 is defined to have M rows of sub-pixels P, where M is a positive integer greater than 1. The M rows of sub-pixels P are sequentially the 1 st row sub-pixels to the M rows of sub-pixels, and the following settings are set:

K_i＝X_i+1-X_i

wherein, X_iIs the average value of the gray scale data of all the sub-pixels P in the ith row, i is a positive integer, and i +1 is not more than M.

K₁To K_M-1The absolute value of either is larger than a set constant K₀If so, the sub-display area 100 satisfies the compensation condition, otherwise, the compensation condition is not satisfied. K₀At a constant greater than 0.

In the fourth determination method, the brightness difference between rows of the sub-pixels P can visually cause the visual effect of display jitter. K_iThe luminance fluctuation difference between the rows of sub-pixels P in the sub-display area 100 can be represented as a determination method for whether compensation is required.

The fifth judgment mode is as follows: setting a sub-display area 100 having M rows of sub-pixels, where M is a positive integer greater than 1; in the current data frame, for m rows of continuous sub-pixels in the sub-display area 100, if the number proportion of the sub-pixels with gray scale data smaller than a sixth threshold in the sub-display area is greater than s%, the sub-display area meets the compensation condition, otherwise, the compensation adjustment is not met; wherein M is a set constant greater than 1 and less than M. The sixth threshold is a positive integer less than 225.

In the fifth judgment manner, it can be avoided that the average value of the gray scale data is increased due to the existence of a large number of sub-pixels P with higher gray scale data in the sub-display area 100, and the sub-display area to be compensated can be accurately determined.

It should be noted that, in the embodiment of the present application, each threshold may be set based on the compensation accuracy, and this is not specifically limited in the embodiment of the present application. The number of rows of sub-pixels P in different sub-display areas 100 may be the same or different.

As shown in fig. 3, in the display panel, the sub-pixels P in each column can be directly connected to the DATA driving circuit 14 through the DATA lines DATA. In this manner, the data driving circuit 14 needs to have a data interface corresponding to the sub-pixel columns one to one.

In order to reduce the number of data interfaces in the data driving circuit 14, the sub-pixels P in each column may be connected to the data driving circuit 14 through the gate circuit 31 as shown in fig. 6.

As shown in fig. 6, fig. 6 is a schematic diagram of a connection manner between a sub-pixel and a DATA driving circuit according to an embodiment of the present disclosure, in which each column of the sub-pixels P is connected to a separate DATA line DATA, and the DATA line DATA is connected to the DATA driving circuit 14 through a gate circuit 31.

Y adjacent DATA lines DATA are connected to the same DATA output pin of the DATA driving circuit 14 through the gate circuit 31, and two adjacent DATA output pins D1 and D2 are output in fig. 6. The driving controller 12 controls the on/off state of the gating circuit 31 by Y data clock signals, where Y is a positive integer greater than 1.

In the embodiment shown in fig. 6, Y is taken as 6 as an example, so that six DATA lines DATA arranged in series are connected to the same DATA output pin through the gating circuit 31. Six data clock signal lines are provided, and the first clock signals CKH 1-CKH 6 are sequentially output. The value of Y may be set based on requirements, which is not specifically limited in this embodiment of the application.

The gate circuit 31 includes a plurality of sub-gate circuits 32, and each sub-gate circuit 32 includes Y gate switches 321. In the same sub-gate circuit 32, the first electrodes of the gate switches are connected to the same DATA output pin, the second electrodes are respectively connected to one DATA line DATA, and the gates are respectively connected to a plurality of different DATA clock signals.

In the technical scheme of the embodiment of the application, aiming at the problem of low refresh frequency picture jitter, based on the principle that the retention time of gray scale data is longer under the condition of higher brightness (larger written data signal) and shorter under the condition of lower brightness (larger written data signal), the sub-display area 100 which meets the compensation condition in the display panel is compensated and driven, so that the picture jitter problem can be reduced or even avoided. But also to achieve a reduction in power consumption of the compensation scheme.

Based on the foregoing embodiment, another embodiment of the present application further provides a display driving method of a display panel, where the display panel includes a display area and a frame area surrounding the display area, the display area has a plurality of sub-pixels arranged in an array, the frame area has a data driving circuit and a scanning driving circuit, the display area has a plurality of sub-display areas, the sub-display areas have a plurality of rows of the sub-pixels arranged continuously, and a structure of the display panel may be described with reference to the foregoing embodiment, and is not described again in this embodiment.

Fig. 7 is a schematic flow chart of a display driving method provided in an embodiment of the present application, where the display driving method is as shown in fig. 7, and the method includes:

step S11: and in the current data frame, obtaining the gray scale data of the sub-pixels in the sub-display area.

Step S12: and judging whether the sub-display area meets a compensation condition or not based on the gray scale data of the sub-pixels in the sub-display area in the current data frame.

Step S13: if yes, in the holding time interval of the current data frame and the next data frame, the scanning driving circuit and the data driving circuit are controlled to carry out compensation display driving on the sub-pixels.

Step S14: if not, in the holding time interval of the current data frame and the next data frame, controlling the sub-pixels in the sub-display area to hold the gray scale data of the current data frame through the scanning driving circuit and the data driving circuit.

In a first judgment manner, the method for judging whether the compensation condition is satisfied includes: in the current data frame, if the mean value of the gray scale data of all the sub-pixels in the sub-display area is smaller than a reference threshold value, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied.

In the compensation method, the display panel is provided with N rows of sub-pixels in total. The gray scale data of the sub-pixels in the 1 st row to the sub-pixels in the Nth row in the current data frame are shown in the following table. Any adjacent three columns of sub-pixels have different light-emitting colors, including: a column of red subpixels R, a column of blue subpixels B, and a column of green subpixels G. If the display panel has four sub-display areas, the four sub-display areas are respectively set as an area A, an area B, an area C and an area D in the direction from the 1 st column to the Nth column, and the corresponding average values are respectively a, B, C and D.

When compensation display driving is carried out, in the process of current data frame display driving, data signals of a current data frame are obtained, data signals of the current data frame are stored, whether the mean value of a sub-display area is smaller than a set reference threshold value or not is judged, if yes, sub-pixels in the sub-display area need to carry out compensation display driving, and if not, sub-pixels in the sub-display area need to keep gray scale data of the current data frame.

In a second determination manner, the method for determining whether the compensation condition is satisfied includes: in the current data frame, if the number of sub-pixels of which the gray scale data is smaller than a first threshold in the sub-display area is larger than a second threshold and the average value of the gray scale data of all the sub-pixels in the sub-display area is smaller than a reference threshold, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied.

In a third determination manner, the method for determining whether the compensation condition is satisfied includes: in the current data frame, if the mean value of the gray scale data of all the first sub-pixels in the sub-display area is not larger than a third threshold value, the compensation condition is met, otherwise, the compensation condition is not met; the first sub-pixel is a sub-pixel with gray scale data smaller than a fourth threshold value, and the fourth threshold value is larger than the third threshold value; in the sub-display area, the number of the first sub-pixels is not less than a fifth threshold.

In a fourth judgment mode, the method for judging whether the compensation condition is satisfied includes: a sub-display area 100 is defined to have M rows of sub-pixels P, where M is a positive integer greater than 1. The M rows of sub-pixels P are sequentially the 1 st row sub-pixels to the M rows of sub-pixels, and the following settings are set:

K_i＝X_i+1-X_i

In a fifth judgment manner, the method for judging whether the compensation condition is satisfied includes: setting a sub-display area 100 having M rows of sub-pixels, where M is a positive integer greater than 1; in the current data frame, for m rows of continuous sub-pixels in the sub-display area 100, if the number proportion of the sub-pixels with gray scale data smaller than a sixth threshold in the sub-display area is greater than s%, the sub-display area meets the compensation condition, otherwise, the compensation adjustment is not met; wherein M is a set constant greater than 1 and less than M. The sixth threshold is a positive integer less than 225.

In the display driving method according to the embodiment of the application, the sub-display area satisfying the compensation condition is set as a sub-display area to be compensated, and the sub-display area not satisfying the compensation condition is set as a non-compensation sub-display area; and if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, sequentially scanning all the sub-display areas, and inputting data signals for sub-pixels in the sub-display area to be compensated only when the sub-display area to be compensated is scanned.

In the method, if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, only the sub-display area to be compensated is scanned sequentially, and when the sub-display area to be compensated is scanned, data signals are input for sub-pixels in the sub-display area to be compensated.

The compensation scheme of the present application is further described below based on a specific timing diagram.

The display panel is provided with four sub-display area areas which are sequentially arranged, namely an area A, an area B, an area C and an area D, 6 adjacent data lines are connected with the same data output pin of the data driving circuit through the gating circuit, six data clock signals are provided, and the six data clock signals are sequentially CKH 1-CKH 6. The refresh frequency is set to F Hz.

In the display driving method according to the embodiment of the application, whether the sub-display area meets the compensation condition can be determined based on the gray scale data of the sub-pixels in the sub-display area, and the sub-pixels in the sub-display area meeting the compensation condition can be subjected to compensation display driving in the holding period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under the low refreshing frequency can be avoided.

Based on the foregoing embodiment, another embodiment of the present application further provides an electronic device, where the display panel is described in the foregoing embodiment of the electronic device. The electronic device can be wearable devices such as a smart watch and smart glasses, or other display devices with low refresh frequency (refresh frequency is not more than 15 Hz).

The display panel controller can determine whether the sub-display area meets the compensation condition or not based on the gray scale data of the sub-pixels in the sub-display area, and can perform compensation display driving on the sub-pixels in the sub-display area meeting the compensation condition in the holding period of the current data frame and the next data frame, so that the problem of picture shaking of the display panel under the low refreshing frequency can be avoided.

The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. As for the display driving method and the electronic device disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant points can be described with reference to the corresponding parts of the display panel.

It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, comprising:

in a current data frame, the drive controller is configured to determine whether the sub-display area meets a compensation condition based on gray scale data of sub-pixels in the sub-display area, if so, control the sub-scanning drive circuit and the data drive circuit in a holding period of the current data frame and a next data frame to perform compensation display drive on the sub-pixels in the sub-display area, and if not, control the sub-scanning drive circuit and the data drive circuit by the drive controller to enable the sub-pixels in the sub-display area to hold the gray scale data of the current data frame.

2. The display panel of claim 1, wherein the driving controller is configured to provide an independent first scan-on signal for each of the sub-scan driving circuits, to control the sub-scan driving circuits to provide a first scan signal and a second scan signal for the sub-pixels in the corresponding sub-display area, to provide an independent second scan-on signal for each of the sub-scan driving circuits, and to control the sub-scan driving circuits to provide a light-emitting signal for the sub-pixels in the corresponding sub-display area.

3. The display panel according to claim 2, wherein the sub-scanning drive circuit comprises:

the first scanning circuit is used for sequentially providing the first scanning signal and the second scanning signal for each row of sub-pixels in the correspondingly connected sub-display area based on the input first scanning starting signal, the input first scanning clock signal and the input second scanning clock signal;

and the second scanning circuit is used for sequentially providing the light-emitting signals for each row of sub-pixels in the correspondingly connected sub-display area based on the second scanning starting signal, the third scanning clock signal and the fourth scanning clock signal.

4. The display panel according to claim 3, wherein the sub-display area satisfying the compensation condition is set as a sub-display area to be compensated, and the sub-display area not satisfying the compensation condition is set as a non-compensation sub-display area;

if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, the driving controller is used for controlling the scanning driving circuit to sequentially scan all the sub-display areas through the first scanning starting signal, the second scanning starting signal, the first clock signal to the fourth clock signal, and controlling the data driving circuit to input data signals for sub-pixels in the sub-display area to be compensated only when the sub-display area to be compensated is scanned.

5. The display panel according to claim 3, wherein the sub-display area satisfying the compensation condition is set as a sub-display area to be compensated, and the sub-display area not satisfying the compensation condition is set as a non-compensation sub-display area;

if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, the driving controller is used for controlling the scanning driving circuit to scan the sub-display area to be compensated only sequentially through the first scanning start signal, the second scanning start signal, the first clock signal to the fourth clock signal, and controlling the data driving circuit to input data signals for sub-pixels in the sub-display area to be compensated when the sub-display area to be compensated is scanned.

6. The display panel according to claim 2, wherein in the current data frame, the compensation condition is satisfied if an average value of all the sub-pixel grayscale data in the sub-display region is smaller than a reference threshold, and otherwise, the compensation condition is not satisfied.

7. The display panel according to claim 2, wherein in the current data frame, if the number of sub-pixels in the sub-display area whose gray scale data is smaller than a first threshold is larger than a second threshold and the average value of all the sub-pixel gray scale data in the sub-display area is smaller than a reference threshold, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied.

8. The display panel according to claim 2, wherein in the current data frame, if an average value of gray scale data of all first sub-pixels in the sub-display area is not greater than a third threshold, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied;

the first sub-pixel is a sub-pixel with gray scale data smaller than a fourth threshold value, and the fourth threshold value is larger than the third threshold value; in the sub-display area, the number of the first sub-pixels is not less than a fifth threshold.

9. The display panel according to claim 7, wherein each column of the sub-pixels is connected to a separate data line, and the data line is connected to the data driving circuit through a gating circuit;

y adjacent data lines are connected with the same data output pin of the data driving circuit through the gating circuit, the driving controller controls the on-off state of the gating circuit through Y data clock signals, and Y is a positive integer larger than 1.

10. A display driving method of a display panel, the display panel comprising a display area and a frame area surrounding the display area, the display area having a plurality of sub-pixels arranged in an array, the frame area having a data driving circuit and a scan driving circuit, the display area having a plurality of sub-display areas, the sub-display areas having a plurality of rows of the sub-pixels arranged in succession, the display driving method comprising:

11. The display driving method according to claim 10, wherein the method of determining whether the compensation condition is satisfied comprises:

in the current data frame, if the mean value of the gray scale data of all the sub-pixels in the sub-display area is smaller than a reference threshold value, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied.

12. The display driving method according to claim 10, wherein the method of determining whether the compensation condition is satisfied comprises:

in the current data frame, if the number of sub-pixels of which the gray scale data is smaller than a first threshold in the sub-display area is larger than a second threshold and the average value of the gray scale data of all the sub-pixels in the sub-display area is smaller than a reference threshold, the compensation condition is satisfied, otherwise, the compensation condition is not satisfied.

13. The display driving method according to claim 10, wherein the method of determining whether the compensation condition is satisfied comprises: in the current data frame, if the mean value of the gray scale data of all the first sub-pixels in the sub-display area is not larger than a third threshold value, the compensation condition is met, otherwise, the compensation condition is not met;

14. The display driving method according to claim 10, wherein the sub-display region satisfying the compensation condition is set as a sub-display region to be compensated, and the sub-display region not satisfying the compensation condition is set as a non-compensation sub-display region;

and if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, sequentially scanning all the sub-display areas, and inputting data signals for sub-pixels in the sub-display area to be compensated only when the sub-display area to be compensated is scanned.

15. The display driving method according to claim 10, wherein the sub-display region satisfying the compensation condition is set as a sub-display region to be compensated, and the sub-display region not satisfying the compensation condition is set as a non-compensation sub-display region;

and if the sub-display area to be compensated and the non-compensation sub-display area exist at the same time, only sequentially scanning the sub-display area to be compensated, and inputting data signals for sub-pixels in the sub-display area to be compensated when the sub-display area to be compensated is scanned.

16. An electronic device, comprising: the display panel of any one of claims 1-9.