CN116434707A - Display panel and driving method thereof - Google Patents

Abstract

The application provides a display panel and a driving method thereof, wherein the display panel comprises a plurality of pixel circuits and a control module; the pixel circuit includes a driving transistor; the control module is connected with the pixel circuit through an initialization signal wire, and is used for determining the magnitude of an initialization signal of the current display frame based on the current value of a first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, and further initializing the control end of the driving transistor through the initialization signal transmitted by the initialization signal wire, wherein the first parameter comprises data voltage, gray scale or parameters related to the data voltage or gray scale, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor is reduced, and the residual shadow is improved.

Description

Display panel and driving method thereof

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display panel and a driving method thereof.

Background

In the conventional display product, after the display screen is switched from the black-and-white screen to the gray-scale screen, a display trace of the black-and-white screen, that is, a ghost, is seen, which is mainly caused by a hysteresis voltage of the TFT. The existing method for solving the problem mainly comprises process improvement, but the process improvement has the problems of poor process repeatability, batch fluctuation and the like, and the problem cannot be solved fundamentally, so the prior art needs to be improved.

Disclosure of Invention

The application provides a display panel and a driving method thereof, which can improve the problem of afterimage.

For solving the technical problem, the first technical scheme provided by the application is as follows: provided is a display panel including: a plurality of pixel circuits including driving transistors;

the control module is connected with the pixel circuit through an initialization signal line and is used for determining the magnitude of an initialization signal of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, and then initializing the control end of the driving transistor through the initialization signal line.

In some embodiments, the previous frame of the current display frame is the previous frame of the current display frame.

In some embodiments, the control module is configured to initialize the control terminal of the driving transistor using a first initialization signal when a difference between a current value of a first parameter corresponding to a current display frame and a historical value of a first parameter corresponding to a previous frame of the current display frame is greater than a first preset threshold; when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude; and when the difference value is larger than or equal to a second preset threshold value and smaller than or equal to a first preset threshold value, initializing the control end of the driving transistor by using an initialization signal corresponding to the last frame of the current display frame.

In some embodiments, the difference is a current value of a first parameter corresponding to a current display frame subtracted by a historical value of a first parameter corresponding to a previous frame of the current display frame, and the first initialization signal is greater than the second initialization signal.

In some embodiments, the pixel circuit includes a first initialization unit and a second initialization unit, the initialization signal line includes a first initialization signal line and a second initialization signal line, the first initialization unit is connected to the first initialization signal line, the first scan line and a control terminal of the driving transistor, and is configured to provide the driving transistor with the first initialization signal on the first initialization signal line in response to the first scan signal on the first scan line; the second initialization unit is connected with the second initialization signal line, the second scanning line and the control end of the driving transistor and is used for responding to the second scanning signal on the second scanning line and providing a second initialization signal on the second initialization signal line for the driving transistor; the control module is electrically connected with the first scanning line and the second scanning line and is used for determining signals on the first scanning line and the second scanning line of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame so as to enable one of the first initialization unit and the second initialization unit to be conducted.

In some embodiments, the first initialization unit includes: the first end of the first reset transistor is connected with the control end of the driving transistor, the second end of the first reset transistor is connected with the first initialization signal line, and the control end of the first reset transistor is connected with the control module through the first scanning line; the second initialization unit includes: and the first end of the second reset transistor is connected with the control end of the driving transistor, the second end of the second reset transistor is connected with the second initialization signal line, and the control end of the second reset transistor is connected with the control module through the second scanning line.

In some embodiments, the pixel circuit further comprises: the first end of the writing unit is connected with the data line, the control end of the writing unit is connected with the control module through the third scanning line, and the second end of the writing unit is connected with the control end of the driving transistor; and the first polar plate of the storage capacitor is connected with the first power line, and the second polar plate of the storage capacitor is connected with the control end of the driving transistor.

In some embodiments, the pixel circuit further includes a light emission control transistor, a first end of the light emission control transistor is connected to the second end of the driving transistor, and a control end of the light emission control transistor is connected to the control module through a fourth scan line; and the first electrode of the light-emitting element is connected with the second end of the light-emitting control transistor, and the second electrode of the light-emitting element is connected with the second power line.

In order to solve the technical problems, a second technical scheme provided by the application is as follows: provided is a driving method of a display panel, including: determining the magnitude of an initialization signal of a current display frame based on a current value of a first parameter corresponding to the current display frame and a historical value of the first parameter corresponding to a previous frame of the current display frame, wherein the initialization signal is used for initializing a control end of a driving transistor in a pixel circuit in a display panel; the first parameter includes a data voltage, a gray level, or a parameter related to the data voltage or the gray level.

In some embodiments, the previous frame of the current display frame is the previous frame of the current display frame.

In some embodiments, determining the magnitude of the initialization signal for the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame includes:

when the difference value between the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame is larger than a first preset threshold value, initializing a control end of the driving transistor by using a first initialization signal;

when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude;

And when the difference value is larger than or equal to a second preset threshold value and smaller than or equal to a first preset threshold value, initializing the control end of the driving transistor by using an initialization signal corresponding to the last frame of the current display frame.

Compared with the prior art, the display panel and the driving method thereof provided by the application are characterized in that the magnitude of the initialization signal of the current display frame is determined by the control module based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, and then the control end of the driving transistor in the pixel circuit is initialized by the initialization signal transmitted by the initialization signal wire, wherein the first parameter comprises data voltage, gray scale or parameters related to the data voltage or gray scale. Therefore, the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor is reduced, and the residual shadow is improved.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic structural diagram of an embodiment of a display panel provided in the present application;

FIG. 2 is a block diagram illustrating an embodiment of a pixel circuit and a control module in the display panel shown in FIG. 1;

FIG. 3 is a schematic circuit diagram of an embodiment of the pixel circuit and the control module in the display panel shown in FIG. 1;

FIG. 4 is a schematic structural diagram of another embodiment of a display panel provided in the present application;

FIG. 5 is a block diagram illustrating an embodiment of a pixel circuit and a control module in the display panel shown in FIG. 4;

FIG. 6 is a circuit diagram illustrating an embodiment of the pixel circuit and the control module in the display panel shown in FIG. 4;

FIG. 7 is a timing diagram of an embodiment of a pixel circuit in a display panel according to the present disclosure;

FIG. 8 is a flowchart illustrating an embodiment of a driving method of a display panel according to the present disclosure;

FIG. 9 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an embodiment of a display device provided in the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1 and fig. 4, fig. 1 is a schematic structural diagram of an embodiment of a display panel provided in the present application, and fig. 4 is a schematic structural diagram of another embodiment of a display panel provided in the present application. The display panel 100 includes a plurality of pixel circuits 20, a control module 30, and an initialization signal line R for connecting the plurality of pixel circuits 20 and the control module 30, the initialization signal line R for transmitting an initialization signal Vref output from the control module 30. Wherein the pixel circuit 20 includes a driving transistor M; the control module 30 is connected to the pixel circuit 20 via an initialization signal line R, and the control module 30 is configured to determine a magnitude of an initialization signal Vref of the current display frame based on a current value of a first parameter corresponding to the current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame, so as to initialize a control end of the driving transistor M via the initialization signal Vref transmitted by the initialization signal line R.

The first parameter includes a data voltage Vdata, a gray level, or a parameter related to the data voltage Vdata or the gray level.

The current value of the first parameter corresponding to the current display frame is related to the gray scale/data voltage Vdata output by the control module 30 in the current display frame, and the historical value of the first parameter corresponding to the previous frame of the current display frame is related to the gray scale/data voltage Vdata output by the control module 30 in the previous frame of the current display frame. The first parameter may include a parameter that is positively or negatively correlated with the data voltage Vdata, for example, may be a parameter that is proportional to the data voltage Vdata. For example, the gray scale has a positive correlation or a negative correlation with the data voltage. For example, the driving transistor is a P-type transistor, the gray scale and the data voltage are in a negative correlation, the larger the gray scale is, the larger the brightness is, the larger the driving current generated by the driving transistor M is, and the smaller the data voltage required by the driving transistor M is. The first parameter may also include brightness, a driving current generated by the driving transistor M, or a gamma register value, etc.

Specifically, the magnitude of the initialization signal Vref of the current display frame is determined by determining the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, and the control end of the driving transistor M is initialized by outputting the corresponding initialization signal Vref through the initialization signal line R, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M is reduced, and the ghost is improved.

The display panel 100 may further include a data line L, through which the control module 30 is connected to the pixel circuit 20, and the data line L is used for transmitting the data voltage Vdata output by the control module 30 to the pixel circuit 20. The plurality of pixel circuits 20 may be arranged in an array. The control module 30 may include a driver chip or the like.

In some embodiments, the previous frame of the current display frame may be selected as the previous frame of the current display frame, that is, the control module 30 determines the magnitude of the initialization signal Vref of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, so as to eliminate the residual potential of the previous frame of the current display frame, reduce the hysteresis voltage of the driving transistor M, and improve the ghost.

In some embodiments, the previous frame of the current display frame may be selected as the last two frames or the last three frames of the current display frame, that is, the control module 30 determines the magnitude of the initialization signal Vref of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the last two frames or the last three frames of the current display frame, so as to eliminate the residual potential accumulated in the last two frames or the last three frames of the current display frame, reduce the hysteresis voltage of the driving transistor M, and improve the ghost.

In some embodiments, the control module 30 is configured to initialize the control terminal of the driving transistor with a first initialization signal when a difference between a current value of a first parameter corresponding to a current display frame and a historical value of a first parameter corresponding to a previous frame of the current display frame is greater than a first preset threshold; when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor M by using a second initialization signal; the first initialization signal and the second initialization signal are different in magnitude. And when the difference value is larger than or equal to a second preset threshold value and smaller than or equal to a first preset threshold value, initializing the control end of the driving transistor M by using an initialization signal corresponding to the last frame of the current display frame. The second preset threshold is smaller than the first preset threshold.

In some embodiments, the control module 30 is configured to determine a difference between a current value of the first parameter corresponding to the current display frame and a historical value of the first parameter corresponding to a frame previous to the current display frame; in response to the difference being greater than a first preset threshold, initializing a control terminal of the driving transistor by using a first initialization signal; in response to the difference value being smaller than a second preset threshold value, initializing a control end of the driving transistor M by using a second initialization signal; the first initialization signal and the second initialization signal are different in magnitude. And initializing the control end of the driving transistor M by using an initialization signal corresponding to the last frame of the current display frame in response to the difference value being greater than or equal to the second preset threshold value and less than or equal to the first preset threshold value. The second preset threshold is smaller than the first preset threshold.

Alternatively, the difference may be the current value of the first parameter corresponding to the current display frame subtracted by the historical value of the first parameter corresponding to the previous frame of the current display frame, or the difference may be the historical value of the first parameter corresponding to the previous frame of the current display frame subtracted by the current value of the first parameter corresponding to the current display frame.

The first initialization signal Vref1 and the second initialization signal Vref2 are different in magnitude, and the control module 30 determines that the corresponding first initialization signal Vref1 or second initialization signal Vref2 initializes the control terminal of the driving transistor M based on the difference value, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M can be reduced, and the residual image can be improved.

For convenience of description, the following description will take the example that the first parameter is related to the data voltage Vdata output by the control module 30.

In some embodiments, the previous frame of the current display frame is the previous frame of the current display frame, and control module 30 determines the data voltage Vdata corresponding to the current value of the first parameter minus the difference Δv between the data voltages Vdata corresponding to the historical value of the first parameter. In response to the difference Δv being greater than the first preset threshold V1, the control module 30 initializes the control terminal of the driving transistor M with the first initialization signal Vref 1. In response to the difference Δv being smaller than the second preset threshold V2, the control module 30 initializes the control terminal of the driving transistor M with the second initialization signal Vref2. In response to the difference Δv being greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, the control module 30 initializes the control terminal of the driving transistor M by using the initialization signal Vref corresponding to the previous frame of the current display frame.

Taking the first parameter as the data voltage, the first initialization signal Vref1 is greater than the second initialization signal Vref2, the first preset threshold V1 is 1V, the second preset threshold V2 is-1V as an example, if the difference Δv between the data voltage Vdata corresponding to the current value of the first parameter and the data voltage Vdata corresponding to the history value of the first parameter corresponding to the previous frame is greater than 1V, the control module 30 initializes the control terminal of the driving transistor M by using the first initialization signal Vref1, and the data voltage Vdata corresponding to the current value of the first parameter is greater than the data voltage Vdata corresponding to the history value of the first parameter, that is, the data voltage Vdata corresponding to the history value of the first parameter is smaller, and the residual potential is small, so that the control terminal of the driving transistor M can be initialized by using the first initialization signal Vref1 (also negative voltage) greater than the second initialization signal Vref2 when initializing the control terminal of the driving transistor M. If the difference Δv between the data voltage Vdata corresponding to the current value of the first parameter and the data voltage Vdata corresponding to the historical value of the first parameter is less than-1V, the control initialization module 30 initializes the control terminal of the driving transistor M by using the second initialization signal Vref2, and the data voltage Vdata corresponding to the current value of the first parameter is smaller than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is larger, and the residual potential is larger. If the difference Δv between the data voltage Vdata corresponding to the current value of the first parameter and the data voltage Vdata corresponding to the historical value of the first parameter is greater than or equal to-1V and less than or equal to 1V, the initialization signal Vref of the current display frame is consistent with the initialization signal Vref corresponding to the previous frame of the current display frame, that is, if the initialization signal Vref corresponding to the previous frame of the current display frame is the first initialization signal Vref1, the initialization signal Vref of the current display frame is also the first initialization signal Vref1; if the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the initialization signal Vref of the current display frame is also the second initialization signal Vref2.

Specifically, by the method, the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M is reduced, and the residual image is improved.

In some embodiments, taking the first parameter as the data voltage, the first initialization signal Vref1 is smaller than the second initialization signal Vref2 as an example. Specifically, if the difference Δv between the data voltage Vdata corresponding to the historical value of the first parameter minus the data voltage Vdata corresponding to the current value of the first parameter is smaller than the second preset threshold V2, for example, the second preset threshold V2 is-1V, the data voltage Vdata corresponding to the current value of the first parameter is larger than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is smaller, and the residual potential is smaller, so that when initializing the driving transistor M, a second initialization signal Vref2 larger than the first initialization signal Vref1 is required to initialize the driving transistor M. If the difference Δv between the data voltage Vdata corresponding to the historical value of the first parameter minus the data voltage Vdata corresponding to the current value of the first parameter is greater than the first preset threshold V1, for example, the first preset threshold V1 is 1V, the data voltage Vdata corresponding to the current value of the first parameter is smaller than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is greater, and the residual potential is greater, so that the first initialization signal Vref1 smaller than the second initialization signal Vref2 can be used to initialize the driving transistor M when initializing the driving transistor M. If the difference Δv of the data voltage Vdata corresponding to the historical value of the first parameter minus the data voltage Vdata corresponding to the current value of the first parameter is greater than or equal to-1V and less than or equal to 1V, the initialization signal Vref of the current display frame is consistent with the initialization signal Vref corresponding to the previous frame of the current display frame, that is, if the initialization signal Vref corresponding to the previous frame of the current display frame is the first initialization signal Vref1, the initialization signal Vref of the current display frame is also the first initialization signal Vref1; if the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the initialization signal Vref of the current display frame is also the second initialization signal Vref2.

In some embodiments, the control module 30 is configured to initialize the control terminal of the driving transistor with a first initialization signal when a ratio of a current value of the first parameter corresponding to the current display frame to a historical value of the first parameter corresponding to a previous frame of the current display frame is greater than a first preset threshold; when the ratio is smaller than a second preset threshold value, initializing a control end of the driving transistor M by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude. And initializing the control end of the driving transistor M by using an initialization signal corresponding to the last frame of the current display frame when the ratio is larger than or equal to the second preset threshold value and smaller than or equal to the first preset threshold value. The second preset threshold is smaller than the first preset threshold.

Alternatively, the ratio may be the current value of the first parameter corresponding to the current display frame divided by the historical value of the first parameter corresponding to the previous frame of the current display frame, or the ratio may be the historical value of the first parameter corresponding to the previous frame of the current display frame divided by the current value of the first parameter corresponding to the current display frame.

The control module 30 determines that the corresponding first initialization signal Vref1 or the second initialization signal Vref2 initializes the control terminal of the driving transistor M based on the ratio, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M can be reduced, and the residual image can be improved.

Taking the first parameter as a data voltage, the first initializing signal Vref1 is greater than the second initializing signal Vref2, the first preset threshold may be greater than 1, for example, 1.2, the second preset threshold may be less than 1, for example, 0.8, if the ratio of the data voltage Vdata corresponding to the current value of the first parameter divided by the data voltage Vdata corresponding to the history value of the first parameter corresponding to the previous frame is greater than the first preset threshold, the control module 30 initializes the control terminal of the driving transistor M by using the first initializing signal Vref1, and the data voltage Vdata corresponding to the current value of the first parameter is greater than the data voltage Vdata corresponding to the history value of the first parameter, that is, the data voltage Vdata corresponding to the history value of the first parameter is smaller, and the residual potential is small, so when initializing the control terminal of the driving transistor M, the first initializing signal Vref1 (also a negative voltage) greater than the second initializing signal Vref2 may be used to initialize the control terminal of the driving transistor M. If the ratio of the data voltage Vdata corresponding to the current value of the first parameter divided by the data voltage Vdata corresponding to the historical value of the first parameter is smaller than the second preset threshold, the control initialization module 30 initializes the control terminal of the driving transistor M by using the second initialization signal Vref2, and the data voltage Vdata corresponding to the current value of the first parameter is smaller than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is larger, and the residual potential is larger. If the ratio of the data voltage Vdata corresponding to the current value of the first parameter divided by the data voltage Vdata corresponding to the history value of the first parameter is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the initialization signal Vref of the current display frame is consistent with the initialization signal Vref corresponding to the last frame of the current display frame, that is, if the initialization signal Vref corresponding to the last frame of the current display frame is the first initialization signal Vref1, the initialization signal Vref of the current display frame is also the first initialization signal Vref1; if the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the initialization signal Vref of the current display frame is also the second initialization signal Vref2.

In some embodiments, taking the first parameter as the data voltage, the first initialization signal Vref1 is smaller than the second initialization signal Vref2 as an example. Specifically, if the ratio of the data voltage Vdata corresponding to the historical value of the first parameter divided by the data voltage Vdata corresponding to the current value of the first parameter is smaller than the second preset threshold, for example, the second preset threshold may be smaller than 1, for example, 0.8, the data voltage Vdata corresponding to the current value of the first parameter is larger than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is smaller, and the residual potential is smaller, so that when initializing the driving transistor M, a second initialization signal Vref2 larger than the first initialization signal Vref1 is required to initialize the driving transistor M. If the ratio of the data voltage Vdata corresponding to the historical value of the first parameter divided by the data voltage Vdata corresponding to the current value of the first parameter is greater than the first preset threshold, for example, the first preset threshold may be greater than 1, for example, 1.2, the data voltage Vdata corresponding to the current value of the first parameter is smaller than the data voltage Vdata corresponding to the historical value of the first parameter, that is, the data voltage Vdata corresponding to the historical value of the first parameter is larger, and the residual potential is larger, so the first initialization signal Vref1 smaller than the second initialization signal Vref2 may be used to initialize the driving transistor M when initializing the driving transistor M. If the ratio of the data voltage Vdata corresponding to the historical value of the first parameter divided by the data voltage Vdata corresponding to the current value of the first parameter is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the initialization signal Vref of the current display frame is consistent with the initialization signal Vref corresponding to the last frame of the current display frame, that is, if the initialization signal Vref corresponding to the last frame of the current display frame is the first initialization signal Vref1, the initialization signal Vref of the current display frame is also the first initialization signal Vref1; if the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the initialization signal Vref of the current display frame is also the second initialization signal Vref2.

In an embodiment, referring to fig. 1 to 3, fig. 2 is a schematic block diagram illustrating an embodiment of a pixel circuit and a control module in the display panel shown in fig. 1; fig. 3 is a specific circuit diagram of an embodiment of the pixel circuit and the control module in the display panel shown in fig. 1. Each pixel circuit 20 includes a driving transistor M, the control module 30 is connected to the pixel circuit 20 through an initializing signal line R, and the control module 30 determines to provide a first initializing signal Vref1 or a second initializing signal Vref2 to initialize the driving transistor M based on a current value of a first parameter corresponding to a current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame, so as to selectively output the first initializing signal Vref1 and the second initializing signal Vref2 in a time-sharing manner through the same initializing signal line R to initialize a control terminal of the driving transistor M. That is, in the present application, the first initialization signal Vref1 and the second initialization signal Vref2 are time-division multiplexed to the same initialization signal line R.

In another embodiment, please refer to fig. 4-6, fig. 5 is a block diagram illustrating an embodiment of a pixel circuit and a control module in the display panel shown in fig. 4; fig. 6 is a specific circuit diagram of an embodiment of the pixel circuit and the control module in the display panel shown in fig. 4. Each pixel circuit 20 includes a driving transistor M, the control module 30 is connected to the pixel circuit 20 through a first initializing signal line R1 and a first initializing signal line R2, and the control module 30 determines to provide a first initializing signal Vref1 or a second initializing signal Vref2 to initialize the driving transistor M based on a current value of a first parameter corresponding to a current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame, so as to selectively output the first initializing signal Vref1 through the first initializing signal line R1 to initialize a control end of the driving transistor M, or output the second initializing signal Vref2 through the second initializing signal line R2 to initialize a control end of the driving transistor M.

In an embodiment, referring to fig. 2 and 5, each pixel circuit 20 specifically includes a light emitting unit 11, a driving unit 12, and an initializing unit 13. The driving unit 12 is connected to the data line L to receive a data voltage Vdata, and is configured to generate a corresponding driving current based on the data voltage Vdata to drive the light emitting unit 11 to emit light, and the driving unit 12 includes a driving transistor M; the initialization unit 13 is connected to the control terminal of the driving transistor M, and the initialization unit 13 is configured to provide an initialization signal Vref, for example, a first initialization signal Vref1 and a second initialization signal Vref2, and initialize the driving transistor M based on the initialization signal Vref; the control module 30 is connected to the driving unit 12 through a data line L, and connected to the initializing unit 13 through an initializing signal line R, and is configured to provide a data voltage Vdata for the driving unit 12 through the data line L, and control the initializing unit 13 to select the first initializing signal Vref1 or the second initializing signal Vref2 to initialize the driving transistor M based on the data voltage Vdata corresponding to a current display frame output by the driving unit 12 and the data voltage Vdata corresponding to a previous frame of the current display frame output by the driving unit 12.

With continued reference to fig. 6, the display panel 100 further includes a first scan line S1 and a second scan line S2 electrically connected to the control module 30, the initialization signal line R includes a first initialization signal line R1 and a first initialization signal line R2, and the initialization unit 13 includes a first initialization unit 131 and a second initialization unit 132. Specifically, the first initializing unit 131 is connected to the first initializing signal line R1, the first scan line S1, and a control end of the driving transistor M, and is configured to provide the driving transistor M with a first initializing signal Vref1 on the first initializing signal line R1 in response to a first scan signal on the first scan line S1; the second initializing unit 132 is connected to the second initializing signal line R2, the second scan line S2, and a control terminal of the driving transistor M, and is configured to provide the driving transistor M with a second initializing signal Vref2 on the second initializing signal line R2 in response to a second scan signal on the second scan line S2; the control module 30 is configured to determine signals on the first scan line S1 and the second scan line S2 of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, so as to turn on one of the first initializing unit 131 and the second initializing unit 132.

Specifically, when the control module 30 determines that the first initialization signal Vref1 is provided to initialize the driving transistor M, the first initialization unit 131 is controlled to be turned on by the first scan line S1, and the first initialization signal Vref1 on the first initialization signal line R1 is provided to the driving transistor M. When the control module 30 determines to provide the second initialization signal Vref2 to initialize the driving transistor M, the second initialization unit 132 is controlled to be turned on by the second scan line S2, and the second initialization signal Vref2 on the second initialization signal line R2 is provided to the driving transistor M.

Specifically, referring to fig. 6, the pixel circuit further includes: the first end of the writing unit M1 is connected with the data line L to receive the data voltage Vdata, the control end of the writing unit M1 is connected with the control module 30 through the third scanning line S3, and the second end of the writing unit M1 is connected with the control end of the driving transistor M. The first polar plate of the storage capacitor C is connected with the first power line ELVDD, and the second polar plate of the storage capacitor C is connected with the control end of the driving transistor M. A first terminal of the driving transistor M is connected to the first power line ELVDD, and a second terminal of the driving transistor M is connected to the light emitting unit 11.

In one embodiment, the write unit M1 includes a write transistor.

Specifically, the light emitting unit 11 includes: a light emission control transistor M2 and a light emitting element D. The first end of the light emitting control transistor M2 is connected to the second end of the driving transistor M, and the control end of the light emitting control transistor M2 is connected to the control module 30 through the fourth scan line S4. A first electrode of the light emitting element D is connected to the second terminal of the light emission control transistor M2, and a second electrode of the light emitting element D is connected to the second power line ELVSS.

In an embodiment, the first pole of the light element D may be an anode, and the second pole may be a cathode; the second power line ELVSS may have a potential smaller than that of the first power line ELVDD, wherein the second power line ELVSS may be connected to a ground potential.

The first initialization unit 131 includes a first reset transistor M3, a first end of the first reset transistor M3 is connected to a control end of the driving transistor M, a second end of the first reset transistor M3 is connected to the first initialization signal line R1 to receive the first initialization signal Vref1, and the control end of the first reset transistor M3 is connected to the control module 30 through the first scan line S1.

The second initialization unit 132 includes a second reset transistor M4, a first end of the second reset transistor M4 is connected to the control end of the driving transistor M, a second end of the second reset transistor M4 is connected to the second initialization signal line R2 to receive the second initialization signal Vref2, and the control end of the second reset transistor M4 is connected to the control module 30 through the second scan line S2.

The driving transistor M, the writing transistor, the light emission control transistor M2, the first reset transistor M3, and the second reset transistor M4 may be P-type transistors, N-type transistors, or P-type transistors and N-type transistors, which are not limited herein.

Alternatively, the pixel circuit may further include a threshold compensation transistor connected between the gate electrode and the second electrode of the driving transistor, a second light emission control transistor connected between the first power line and the first electrode of the driving transistor, an anode initialization transistor connected to the first electrode of the light emitting element, and the like, the writing transistor is connected between the data line and the first electrode of the driving transistor, and the writing unit includes a writing transistor and a threshold compensation transistor. The initialization unit may be further connected between the initialization signal line and the second pole of the driving transistor. The structure of the pixel circuit may be set as necessary, which is not limited in this application.

For convenience of description, the driving transistor M, the writing transistor, the light emitting control transistor M2, the first reset transistor M3, and the second reset transistor M4 are P-type transistors. Referring to fig. 1 to fig. 7, fig. 7 is a timing diagram of an embodiment of a pixel circuit in a display panel according to the present application.

In the reset phase t1, the control module 30 outputs the off signal to the control terminal of the writing unit M1 and the control terminal of the light emission control transistor M2 through the third scan line S3 and the fourth scan line S4, respectively, and may be, for example, at a high level, so that the writing unit M1 and the light emission control transistor M2 are turned off. The control module 30 obtains the current value of the first parameter corresponding to the current display frame and obtains the historical value of the first parameter corresponding to the previous frame of the current display frame; the control initializing unit 13 selects the first initializing signal Vref1 or the second initializing signal Vref2 to initialize the driving transistor M based on the current value of the first parameter and the history value of the first parameter.

Specifically, the control module 30 determines a difference Δv between the data voltage Vdata corresponding to the current value of the first parameter and the data voltage Vdata corresponding to the historical value of the first parameter. If the difference Δv is greater than the first preset threshold V1, the control module 30 outputs an off signal, for example, a high level, for the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned off, and outputs an on signal, for example, a low level, for the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned on, and initializes the driving transistor M using the first initialization signal Vref 1. If the difference Δv is smaller than the second preset threshold V2, the control module outputs an off signal, for example, a high level, for the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned off, and outputs an on signal, for example, a low level, for the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned on, and the driving transistor M is initialized by using the second initialization signal Vref 2.

If the difference Δv is greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, the control initializing unit 13 initializes the driving transistor M with an initializing signal Vref corresponding to a frame previous to the current display frame. Specifically, when the difference Δv is greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, if the initialization signal Vref corresponding to the previous frame of the current display frame is the first initialization signal Vref1, the control module 30 outputs an off signal to the control end of the second reset transistor M4 through the second scan line S2, for example, may be at a high level, so that the second reset transistor M4 is turned off, and outputs an on signal to the control end of the first reset transistor M3 through the first scan line S1, for example, may be at a low level, so that the first reset transistor M3 is turned on, and the driving transistor M is initialized by using the first initialization signal Vref 1. If the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the control module 30 outputs an off signal, for example, a high level, to the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned off, and outputs an on signal, for example, a low level, to the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned on, and initializes the driving transistor M by using the second initialization signal Vref 2.

Note that, the initialization in this application is to initialize the control terminal (i.e., gate) of the driving transistor M and the storage capacitor C. In the initialization process, the residual potential of the previous frame can be removed, and preparation is made for writing the data voltage Vdata of the current display frame, so that the hysteresis of the driving transistor M can be reduced, and the residual image can be further improved.

In the data writing stage t2, the control module 30 outputs off signals, for example, a high level, to the control terminals of the first reset transistor M3, the second reset transistor M4 and the light emission control transistor M2 through the first scan line S1, the second scan line S2 and the fourth scan line S4, respectively, so that the first reset transistor M3, the second reset transistor M4 and the light emission control transistor M2 are turned off, and the control module 30 outputs on signals, for example, a low level, to the control terminal of the writing unit M1 through the third scan line S3, so that the writing unit M1 is turned on, and the data voltage Vdata on the data line L is written into the storage capacitor C and the control terminal (gate) of the driving transistor M through the writing unit M1.

During the light emitting phase t3, the control module 30 passes through the first scan line S1The second scan line S2 and the third scan line S3 respectively output off signals to the control terminal of the first reset transistor M3, the control terminal of the second reset transistor M4 and the control terminal of the writing unit M1, for example, may be high level, so that the first reset transistor M3, the second reset transistor M4 and the writing unit M1 are turned off, and the control module 30 outputs on signals to the control terminal of the light emission control transistor M2 through the fourth scan line S4, for example, may be low level, so that the light emission control transistor M2 is turned on, and since the gate voltage of the driving transistor M is Vdata, the current of the driving transistor M is

Where Vth is an absolute value voltage and current is controlled by the data voltage Vdata.

Specifically, in the present application, the hysteresis principle of reducing the driving transistor M is mainly that the first initialization signal Vref1 and the second initialization signal Vref2 corresponding to the first reset transistor M3 and the second reset transistor M4, and by comparing, by the control module 30, the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, the initialization voltage of the gate of the driving transistor M is dynamically changed.

Referring to fig. 8, fig. 8 is a flowchart of an embodiment of a driving method of a display panel provided in the present application, where the driving method of the display panel may be used to drive the display panel, and the driving method of the display panel includes:

and determining the magnitude of an initialization signal of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, wherein the initialization signal is used for initializing a control end of a driving transistor in a pixel circuit in the display panel.

In some embodiments, the first parameter comprises a data voltage, a gray level, or a parameter related to a data voltage or a gray level.

Specifically, the magnitude of the initialization signal of the current display frame is further determined by determining the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, and the driving transistor is initialized by transmitting the corresponding initialization signal Vref through the initialization signal line, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M is reduced, and the ghost is improved.

Optionally, the previous frame of the current display frame is the previous frame of the current display frame.

Optionally, determining the magnitude of the initialization signal of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame includes: initializing a control end of the driving transistor by using a first initialization signal when the difference value between the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame is larger than a first preset threshold value; when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude; and initializing a control end of the driving transistor by using an initialization signal corresponding to the last frame of the current display frame when the difference value is larger than or equal to a second preset threshold value and smaller than or equal to a first preset threshold value.

Taking the previous frame of the current display frame as an example of the previous frame of the current display frame, the control module 30 determines the data voltage Vdata corresponding to the current value of the first parameter minus the difference Δv between the data voltages Vdata corresponding to the historical value of the first parameter. In response to the difference Δv being greater than the first preset threshold V1, the control module 30 initializes the control terminal of the driving transistor M with the first initialization signal Vref 1. In response to the difference Δv being smaller than the second preset threshold V2, the control module 30 initializes the control terminal of the driving transistor M with the second initialization signal Vref 2. In response to the difference Δv being greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, the control module 30 initializes the control terminal of the driving transistor M by using an initialization signal corresponding to a frame previous to the current display frame.

The first initialization signal Vref1 and the second initialization signal Vref2 are different in magnitude, and the control module 30 determines the corresponding first initialization signal Vref1 or the second initialization signal Vref2 based on the difference Δv to initialize the control terminal of the driving transistor M, so that the residual potential of the previous frame of the current display frame can be eliminated, the hysteresis voltage of the driving transistor M can be reduced, and the ghost can be improved.

Optionally, determining the magnitude of the initialization signal of the current display frame based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame includes: initializing a control end of the driving transistor by using a first initialization signal when the ratio of the current value of the first parameter corresponding to the current display frame to the historical value of the first parameter corresponding to the previous frame of the current display frame is larger than a first preset threshold value; when the ratio is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude; and when the ratio is greater than or equal to a second preset threshold value and less than or equal to a first preset threshold value, initializing the control end of the driving transistor by using an initialization signal corresponding to the last frame of the current display frame.

Referring to fig. 9, fig. 9 is a flowchart of a specific embodiment of a driving method of a display panel provided in the present application, where the driving method specifically includes:

step S1: in the reset stage, the control module controls the initialization unit to select the first initialization signal or the second initialization signal to initialize the driving transistor based on the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame.

Specifically, during the reset phase t1, the control module 30 outputs the off signal to the control terminal of the writing transistor M1 and the control terminal of the light emitting control transistor M2 through the third scan line S3 and the fourth scan line S4, respectively, and may be, for example, at a high level, so that the writing transistor M1 and the light emitting control transistor M2 are turned off. The control module 30 obtains the current value of the first parameter corresponding to the current display frame and obtains the historical value of the first parameter corresponding to the previous frame of the current display frame; the control initializing unit 13 selects the first initializing signal Vref1 or the second initializing signal Vref2 to initialize the driving transistor M based on the current value of the first parameter and the history value of the first parameter.

Specifically, the control module 30 determines a difference Δv between the data voltage Vdata corresponding to the current value of the first parameter and the data voltage Vdata corresponding to the current value of the first parameter. If the difference Δv is greater than the first preset threshold V1, the control module 30 outputs an off signal, for example, a high level, for the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned off, and outputs an on signal, for example, a low level, for the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned on, and initializes the driving transistor M using the first initialization signal Vref 1. If the difference Δv is smaller than the second preset threshold V2, the control module outputs an off signal, for example, a high level, for the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned off, and outputs an on signal, for example, a low level, for the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned on, and the driving transistor M is initialized by using the second initialization signal Vref 2.

If the difference Δv is greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, the control initializing unit 13 initializes the driving transistor M with an initializing signal Vref corresponding to a frame previous to the current display frame. Specifically, when the difference Δv is greater than or equal to the second preset threshold V2 and less than or equal to the first preset threshold V1, if the initialization signal Vref corresponding to the previous frame of the current display frame is the first initialization signal Vref1, the control module 30 outputs an off signal to the control end of the second reset transistor M4 through the second scan line S2, for example, may be at a high level, so that the second reset transistor M4 is turned off, and outputs an on signal to the control end of the first reset transistor M3 through the first scan line S1, for example, may be at a low level, so that the first reset transistor M3 is turned on, and the driving transistor M is initialized by using the first initialization signal Vref 1. If the initialization signal Vref corresponding to the previous frame of the current display frame is the second initialization signal Vref2, the control module 30 outputs an off signal, for example, a high level, to the control terminal of the first reset transistor M3 through the first scan line S1, so that the first reset transistor M3 is turned off, and outputs an on signal, for example, a low level, to the control terminal of the second reset transistor M4 through the second scan line S2, so that the second reset transistor M4 is turned on, and initializes the driving transistor M by using the second initialization signal Vref 2.

Note that, the initialization in this application is to initialize the control terminal (i.e., gate) of the driving transistor M and the storage capacitor C. In the initialization process, the residual potential of the previous frame can be removed, and preparation is made for writing the data voltage Vdata of the current display frame, so that the hysteresis of the driving transistor M can be reduced, and the residual image can be further improved.

Step S2: in the data writing stage, the data voltage is written into the driving unit through the data line, so that the driving unit generates corresponding driving current based on the written data voltage.

Specifically, in the data writing stage t2, the control module 30 outputs the off signals to the control terminal of the first reset transistor M3, the control terminal of the second reset transistor M4, and the control terminal of the light emission control transistor M2 through the first scan line S1, the second scan line S2, and the fourth scan line S4 respectively, for example, may be at a high level, so that the first reset transistor M3, the second reset transistor M4, and the light emission control transistor M2 are turned off, and the control module 30 outputs the on signals to the control terminal of the writing transistor M1 through the third scan line S3, for example, may be at a low level, so that the writing transistor M1 is turned on, and the data voltage Vdata on the data line L is written into the storage capacitor C and the control terminal (gate) of the driving transistor M through the writing transistor M1.

Step S3: in the light emitting stage, the light emitting unit emits light based on the driving current generated by the driving unit.

Specifically, during the light emitting period t3, the control module 30 outputs the off signals, such as high level, to turn off the first reset transistor M3, the second reset transistor M4 and the write transistor M1, respectively, via the first scan line S1, the second scan line S2 and the third scan line S3, and outputs the on signals, such as low level, to turn on the light emitting control transistor M2 via the fourth scan line S4, and the gate voltage of the drive transistor M is Vdata, so that the current of the drive transistor M is

Where Vth is the absolute voltage and current is controlled by Vdata voltage.

Specifically, in the present application, the hysteresis principle of reducing the driving transistor M is mainly that the first initialization signal Vref1 and the second initialization signal Vref2 corresponding to the first reset transistor M3 and the second reset transistor M4, and by comparing, by the control module 30, the current value of the first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to the previous frame of the current display frame, the initialization voltage of the gate of the driving transistor M is dynamically changed.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a display device provided in the present application, and a display device 200 includes a display panel 100 provided in any of the above embodiments.

Specifically, the display device 200 may be a mobile phone, a television, a tablet computer, a notebook computer, a smart watch, etc., and the display device 200 generally includes a display panel and a housing for carrying the display panel, where the display panel may include an OLED (Organic Light Emitting Diode ) display panel, an AMOLED (Active Matrix/Organic Light Emitting Diode, active Matrix organic light emitting diode) display panel, a Micro LED (Micro Light Emitting Diode, inorganic Micro light emitting diode) display panel, etc.

The foregoing is only the embodiments of the present application, and not the patent scope of the present application is limited by the foregoing description, but all equivalent structures or equivalent processes using the contents of the present application and the accompanying drawings, or directly or indirectly applied to other related technical fields, which are included in the patent protection scope of the present application.

Claims (10)

1. A display panel, comprising:

a plurality of pixel circuits including a driving transistor;

The control module is connected with the pixel circuit through an initialization signal line and is used for determining the size of an initialization signal of a current display frame based on the current value of a first parameter corresponding to the current display frame and the historical value of the first parameter corresponding to a previous frame of the current display frame, and further initializing a control end of the driving transistor through the initialization signal transmitted by the initialization signal line, wherein the first parameter comprises data voltage, gray scale or parameters related to the data voltage or gray scale.

2. The display panel of claim 1, wherein a previous frame of the current display frame is a previous frame of the current display frame.

3. The display panel according to claim 2, wherein the control module is configured to initialize the control terminal of the driving transistor with a first initialization signal when a difference between a current value of a first parameter corresponding to a current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame is greater than a first preset threshold;

when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude;

And initializing a control end of the driving transistor by using an initialization signal corresponding to a previous frame of the current display frame when the difference value is greater than or equal to the second preset threshold value and less than or equal to the first preset threshold value.

4. A display panel according to claim 3, wherein the difference is a current value of a first parameter corresponding to a current display frame minus a historical value of the first parameter corresponding to a frame previous to the current display frame; the first initialization signal is greater than the second initialization signal.

5. The display panel according to any one of claims 1 to 4, wherein the pixel circuit includes a first initialization unit and a second initialization unit, the initialization signal line includes a first initialization signal line and a second initialization signal line,

the first initialization unit is connected with the first initialization signal line, a first scanning line and a control end of the driving transistor and is used for responding to a first scanning signal on the first scanning line and providing the first initialization signal on the first initialization signal line for the driving transistor;

the second initialization unit is connected with the second initialization signal line, the second scanning line and the control end of the driving transistor and is used for responding to a second scanning signal on the second scanning line and providing a second initialization signal on the second initialization signal line for the driving transistor;

The control module is electrically connected with the first scanning line and the second scanning line, and is used for determining signals on the first scanning line and the second scanning line of the current display frame based on a current value of a first parameter corresponding to the current display frame and a historical value of the first parameter corresponding to a previous frame of the current display frame so as to enable one of the first initialization unit and the second initialization unit to be conducted.

6. The display panel of claim 5, wherein the first initialization unit comprises:

a first reset transistor, a first end of which is connected with the control end of the driving transistor, a second end of which is connected with the first initialization signal line, and a control end of which is connected with the control module through the first scanning line;

the second initialization unit includes:

the first end of the second reset transistor is connected with the control end of the driving transistor, the second end of the second reset transistor is connected with the second initialization signal line, and the control end of the second reset transistor is connected with the control module through the second scanning line.

7. The display panel according to any one of claims 1 to 4, wherein the pixel circuit further comprises:

the first end of the writing unit is connected with the data line to receive data signals, the control end of the writing unit is connected with the control module through a third scanning line, and the second end of the writing unit is connected with the control end of the driving transistor;

and the first polar plate of the storage capacitor is connected with the first power line, and the second polar plate of the storage capacitor is connected with the control end of the driving transistor.

8. The display panel according to any one of claims 1 to 4, wherein,

the pixel circuit further comprises a light-emitting control transistor, wherein a first end of the light-emitting control transistor is connected with a second end of the driving transistor, and a control end of the light-emitting control transistor is connected with the control module through a fourth scanning line;

and the first electrode of the light-emitting element is connected with the second end of the light-emitting control transistor, and the second electrode of the light-emitting element is connected with a second power line.

9. A driving method of a display panel, comprising:

determining the magnitude of the initialization signal of the current display frame based on a current value of a first parameter corresponding to the current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame, wherein the initialization signal is used for initializing a control end of a driving transistor in a pixel circuit in the display panel; the first parameter includes a data voltage, a gray level, or a parameter related to the data voltage or gray level.

10. The driving method of a display panel according to claim 9, wherein a previous frame of the current display frame is a previous frame of the current display frame;

preferably, determining the magnitude of the initialization signal of the current display frame based on a current value of a first parameter corresponding to the current display frame and a history value of the first parameter corresponding to a previous frame of the current display frame includes:

initializing a control end of the driving transistor by using a first initialization signal when a difference value between a current value of a first parameter corresponding to a current display frame and a historical value of the first parameter corresponding to a previous frame of the current display frame is larger than a first preset threshold value;

when the difference value is smaller than a second preset threshold value, initializing a control end of the driving transistor by using a second initializing signal; the first initialization signal and the second initialization signal are different in magnitude;

and initializing a control end of the driving transistor by using an initialization signal corresponding to a previous frame of the current display frame when the difference value is greater than or equal to the second preset threshold value and less than or equal to the first preset threshold value.

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