Display panel and driving method thereof

Abstract

The present application provides a display panel and a driving method thereof, wherein the display panel includes a plurality of pixel circuits and a control module; the pixel circuit includes a driving transistor; the control module is connected to the pixel circuit via an initialization signal line, and the control module is used to determine the size 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, and then initialize the control end of the driving transistor through the initialization signal transmitted by the initialization signal line, wherein the first parameter includes a data voltage, a grayscale, or a parameter related to the data voltage or grayscale, thereby eliminating the residual potential of the previous frame of the current display frame, reducing the hysteresis voltage of the driving transistor, and improving the afterimage.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a driving method thereof. Background Art

[0002] In conventional display products, after the display switches from black and white to grayscale, a trace of the black and white image, also known as afterimage, is visible. This is primarily due to the hysteresis voltage of the TFT. Current solutions to this problem primarily rely on process improvements, but these improvements suffer from poor process repeatability and batch-to-batch fluctuations, failing to fundamentally resolve the issue. Therefore, existing technologies need improvement. Summary of the Invention

[0003] The present application provides a display panel and a driving method thereof, which can improve the image sticking problem.

[0004] In order to solve the above technical problems, the first technical solution provided by the present application is: providing a display panel, comprising: a plurality of pixel circuits, each pixel circuit comprising a driving transistor;

[0005] The control module is connected to the pixel circuit via the initialization signal line. The control module is used to determine the size 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, and then initialize the control end of the driving transistor through the initialization signal line.

[0006] In some embodiments, the previous frame of the currently displayed frame is the previous frame of the currently displayed frame.

[0007] In some embodiments, the control module is used to initialize the control end of the driving transistor using a first initialization signal when the difference 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 greater than a first preset threshold; initialize the control end of the driving transistor using a second initialization signal when the difference is less than a second preset threshold; the first initialization signal and the second initialization signal are different in size; and initialize the control end of the driving transistor using the initialization signal corresponding to the previous frame of the current display frame when the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold.

[0008] In some embodiments, the difference is the current value of the first parameter corresponding to the current display frame minus the historical value of the first parameter corresponding to the previous frame of the current display frame, and the first initialization signal is greater than the second initialization signal.

[0009] 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 the control end of the driving transistor, and is used to respond to the first scan signal on the first scan line and provide the driving transistor with the first initialization signal on the first initialization signal line; the second initialization unit is connected to the second initialization signal line, the second scan line and the control end of the driving transistor, and is used to respond to the second scan signal on the second scan line and provide the driving transistor with the second initialization signal on the second initialization signal line; the control module is electrically connected to the first scan line and the second scan line, and the control module is used to determine the signals on the first scan line and the second scan 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 turn on one of the first initialization unit and the second initialization unit.

[0010] In some embodiments, the first initialization unit includes: a first reset transistor, the first end of the first reset transistor is connected to the control end of the driving transistor, the second end of the first reset transistor is connected to the first initialization signal line, and the control end of the first reset transistor is connected to the control module through the first scan line; the second initialization unit includes: a second reset transistor, the first end of the second reset transistor is connected to the control end of the driving transistor, the second end of the second reset transistor is connected to the second initialization signal line, and the control end of the second reset transistor is connected to the control module through the second scan line.

[0011] In some embodiments, the pixel circuit further includes: a writing unit, a first end of the writing unit is connected to the data line, a control end of the writing unit is connected to the control module via a third scanning line, and a second end of the writing unit is connected to the control end of the driving transistor; a storage capacitor, a first plate of the storage capacitor is connected to the first power line, and a second plate of the storage capacitor is connected to the control end of the driving transistor.

[0012] In some embodiments, the pixel circuit also includes a light-emitting control transistor, the first end of the light-emitting control transistor is connected to the second end of the driving transistor, and the control end of the light-emitting control transistor is connected to the control module through a fourth scan line; a light-emitting element, the first electrode of the light-emitting element is connected to the second end of the light-emitting control transistor, and the second electrode of the light-emitting element is connected to the second power line.

[0013] To solve the above technical problems, the second technical solution provided in this application is: providing a driving method for a display panel, including: determining the size 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, wherein the initialization signal is used to initialize the control end of the driving transistor in the pixel circuit in the display panel; the first parameter includes a data voltage, a grayscale, or a parameter related to the data voltage or grayscale.

[0014] In some embodiments, the previous frame of the currently displayed frame is the previous frame of the currently displayed frame.

[0015] In some embodiments, 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 frame before the current display frame includes:

[0016] Initializing the control terminal of the driving transistor using a first initialization signal when 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 previous frame of the current display frame is greater than a first preset threshold;

[0017] When the difference is less than a second preset threshold, the control terminal of the driving transistor is initialized using a second initialization signal; the first initialization signal and the second initialization signal are different in magnitude;

[0018] When the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control terminal of the driving transistor is initialized using an initialization signal corresponding to a previous frame of the current display frame.

[0019] Different from the prior art, the display panel and driving method provided by this application utilizes a control module to determine the magnitude of an initialization signal for 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 frame preceding the current display frame. The initialization signal, transmitted via an initialization signal line, then initializes the control terminal of a drive transistor in a pixel circuit. The first parameter includes a data voltage, grayscale, or a parameter related to the data voltage or grayscale. This eliminates the residual potential of the frame preceding the current display frame, reduces the hysteresis voltage of the drive transistor, and improves image sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0021] Figure 1 A schematic structural diagram of an embodiment of a display panel provided in this application;

[0022] Figure 2 for Figure 1 A schematic diagram of a module of an embodiment of a pixel circuit and a control module in a display panel is shown;

[0023] Figure 3 for Figure 1 A specific circuit diagram of an embodiment of a pixel circuit and a control module in a display panel shown;

[0024] Figure 4 A schematic structural diagram of another embodiment of the display panel provided in this application;

[0025] Figure 5 for Figure 4 A schematic diagram of a module of an embodiment of a pixel circuit and a control module in a display panel is shown;

[0026] Figure 6 for Figure 4 A specific circuit diagram of an embodiment of a pixel circuit and a control module in a display panel shown;

[0027] Figure 7 A timing diagram of an embodiment of a pixel circuit in a display panel provided by the present application;

[0028] Figure 8 A schematic flow chart of an embodiment of a method for driving a display panel provided in the present application;

[0029] Figure 9 A schematic flow chart of a specific embodiment of a method for driving a display panel provided in the present application;

[0030] Figure 10 This is a schematic structural diagram of an embodiment of a display device provided in this application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] See Figure 1 and Figure 4 , Figure 1 This is a schematic structural diagram of an embodiment of a display panel provided in this application. Figure 4This is a schematic structural diagram of another embodiment of the display panel provided by 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 is used to transmit the initialization signal Vref output by the control module 30. The pixel circuit 20 includes a driving transistor M. The control module 30 is connected to the pixel circuit 20 via the initialization signal line R. The control module 30 is used to determine the magnitude of the initialization signal Vref 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, and then initialize the control end of the driving transistor M via the initialization signal Vref transmitted by the initialization signal line R.

[0033] The first parameter includes a data voltage Vdata, a grayscale, or a parameter related to the data voltage Vdata or the grayscale.

[0034] Among them, the current value of the first parameter corresponding to the current display frame is related to the grayscale / 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 grayscale / 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 correlated or negatively correlated with the data voltage Vdata, for example, it may be a parameter that is proportional to the data voltage Vdata. For example, the grayscale is positively correlated or negatively correlated with the data voltage. For example, the driving transistor is a P-type transistor, the grayscale is negatively correlated with the data voltage, the larger the grayscale, the greater the brightness, the greater the driving current generated by the driving transistor M, and the smaller the data voltage required for the driving transistor M. The first parameter may also include brightness, driving current generated by the driving transistor M, or gamma register value, etc.

[0035] Specifically, the present application determines the size of the initialization signal Vref of the current display frame 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 then initializes the control end of the driving transistor M by outputting the corresponding initialization signal Vref through the initialization signal line R, which can 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 afterimage.

[0036] The display panel 100 may further include a data line L, through which the control module 30 is connected to the pixel circuit 20. The data line L is used to transmit 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, etc.

[0037] In some embodiments, the previous frame of the current display frame can be selected as the previous frame of the current display frame, that is, the control module 30 determines the size 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 afterimage.

[0038] In some embodiments, the previous frame of the current display frame can be selected as the previous two or three frames of the current display frame, that is, the control module 30 determines the size 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 two or three frames of the current display frame, so as to eliminate the residual potential accumulated in the previous two or three frames of the current display frame, reduce the hysteresis voltage of the driving transistor M, and improve the afterimage.

[0039] In some embodiments, the control module 30 is configured to initialize the control terminal of the driving transistor M using a first initialization signal when the difference 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 greater than a first preset threshold; and to initialize the control terminal of the driving transistor M using a second initialization signal when the difference is less than a second preset threshold; the first initialization signal and the second initialization signal have different magnitudes. When the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control terminal of the driving transistor M is initialized using the initialization signal corresponding to the previous frame of the current display frame. The second preset threshold is less than the first preset threshold.

[0040] In some embodiments, the control module 30 is configured to determine the difference 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 frame immediately preceding the current display frame; in response to the difference being greater than a first preset threshold, the control terminal of the driving transistor M is initialized using a first initialization signal; in response to the difference being less than a second preset threshold, the control terminal of the driving transistor M is initialized using a second initialization signal; the first initialization signal and the second initialization signal are different in magnitude. In response to the difference being greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control terminal of the driving transistor M is initialized using the initialization signal corresponding to a frame immediately preceding the current display frame. The second preset threshold is less than the first preset threshold.

[0041] Optionally, the difference may be the current value of the first parameter corresponding to the current display frame minus 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 minus the current value of the first parameter corresponding to the current display frame.

[0042] Among them, the first initialization signal Vref1 and the second initialization signal Vref2 have different sizes. The control module 30 determines the corresponding first initialization signal Vref1 or the second initialization signal Vref2 based on the difference to initialize the control end of the driving transistor M, which can 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 afterimage.

[0043] For ease of description, the following description is made by taking the correlation between the first parameter and the data voltage Vdata output by the control module 30 as an example.

[0044] In some embodiments, the previous frame of the current display frame is the frame immediately preceding the current display frame. The control module 30 determines 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. In response to the difference ΔV being greater than a first preset threshold value V1, the control module 30 causes the initialization unit 13 to initialize the control terminal of the driving transistor M using a first initialization signal Vref1. In response to the difference ΔV being less than a second preset threshold value V2, the control module 30 initializes the control terminal of the driving transistor M using a second initialization signal Vref2. In response to the difference ΔV being greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value V1, the control module 30 initializes the control terminal of the driving transistor M using the initialization signal Vref corresponding to the frame immediately preceding the current display frame.

[0045] Taking the first parameter as the data voltage, the first initialization signal Vref1 being greater than the second initialization signal Vref2, the first preset threshold value V1 being 1V, and the second preset threshold value V2 being -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 historical value of the first parameter corresponding to the previous frame is greater than 1V, the control module 30 uses the first initialization signal Vref1 to initialize the control end of the driving transistor M, which is equivalent to the data voltage Vdata corresponding to the current value of the first parameter being greater 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. Therefore, when initializing the control end of the driving transistor M, the first initialization signal Vref1 (also a negative voltage) that is greater than the second initialization signal Vref2 can be used to initialize the control end 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 uses the second initialization signal Vref2 to initialize the control end of the driving transistor M, which is equivalent to the data voltage Vdata corresponding to the current value of the first parameter being less 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. Therefore, when initializing the control end of the driving transistor M, a second initialization signal Vref2 that is more negative than the first initialization signal Vref1 is required to initialize the control end 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 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.

[0046] Specifically, through the method of the present application, 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 afterimage can be improved.

[0047] In some embodiments, taking the first parameter as the data voltage and the first initialization signal Vref1 being 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 and 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, then it means that 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. Therefore, when initializing the driving transistor M, the second initialization signal Vref2, which is 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 and the data voltage Vdata corresponding to the current value of the first parameter is greater than the first preset threshold value V1, for example, the first preset threshold value V1 is 1V, it means that 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. Therefore, when initializing the driving transistor M, the first initialization signal Vref1 which is smaller than the second initialization signal Vref2 can be used to initialize the driving transistor M. If the difference ΔV between the data voltage Vdata corresponding to the historical value of the first parameter and 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.

[0048] In some embodiments, the control module 30 is configured to initialize the control terminal of the driving transistor M 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 greater than a first preset threshold; and to initialize the control terminal of the driving transistor M using a second initialization signal when the ratio is less than a second preset threshold; the first initialization signal and the second initialization signal have different magnitudes. When the ratio is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control terminal of the driving transistor M is initialized using the initialization signal corresponding to the previous frame of the current display frame. The second preset threshold is less than the first preset threshold.

[0049] Optionally, 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.

[0050] Among them, the first initialization signal Vref1 and the second initialization signal Vref2 have different sizes. The control module 30 determines the corresponding first initialization signal Vref1 or the second initialization signal Vref2 based on the ratio to initialize the control end of the driving transistor M, which can 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 afterimage.

[0051] 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 value may be greater than 1, such as 1.2, and the second preset threshold value may be less than 1, such as 0.8, as an example, 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 corresponding to the previous frame is greater than the first preset threshold value, the control module 30 uses the first initialization signal Vref1 to initialize the control end of the driving transistor M, which is equivalent to the data voltage Vdata corresponding to the current value of the first parameter being greater 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. Therefore, when initializing the control end of the driving transistor M, the first initialization signal Vref1 (also a negative voltage) that is larger than the second initialization signal Vref2 can be used to initialize the control end 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 less than the second preset threshold, the control initialization module 30 uses the second initialization signal Vref2 to initialize the control end of the driving transistor M, which is equivalent to the data voltage Vdata corresponding to the current value of the first parameter being less 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. Therefore, when initializing the control end of the driving transistor M, a second initialization signal Vref2 that is more negative than the first initialization signal Vref1 is required to initialize the control end 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 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 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.

[0052] In some embodiments, taking the first parameter as the data voltage and the first initialization signal Vref1 being 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 a second preset threshold value, for example, the second preset threshold value may be smaller than 1, such as 0.8, then it indicates that 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. Therefore, when initializing the driving transistor M, a second initialization signal Vref2 that is 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, then it means that 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. Therefore, when initializing the driving transistor M, the first initialization signal Vref1 which is smaller than the second initialization signal Vref2 can be used 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 or equal to the second preset threshold value and less than or equal to the first preset threshold value, 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.

[0053] In one embodiment, see Figures 1 to 3 , Figure 2 for Figure 1 A schematic diagram of a module of an embodiment of a pixel circuit and a control module in a display panel is shown; Figure 3 for Figure 1The specific circuit diagram of an embodiment of a pixel circuit and a control module in a display panel is shown. Each 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. The control module 30 determines whether to provide a first initialization signal Vref1 or a second initialization signal Vref2 to initialize the driving transistor M 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 frame before the current display frame. The control module 30 then selectively outputs the first initialization signal Vref1 and the second initialization signal Vref2 in a time-sharing manner via the same initialization signal line R to initialize the 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-shared multiplexed on the same initialization signal line R.

[0054] In another embodiment, see Figures 4 to 6 , Figure 5 for Figure 4 A schematic diagram of a module of an embodiment of a pixel circuit and a control module in a display panel is shown; Figure 6 for Figure 4 A specific circuit diagram of an embodiment of a pixel circuit and a control module in a display panel is shown. Each pixel circuit 20 includes a driving transistor M. The control module 30 is connected to the pixel circuit 20 via a first initialization signal line R1 and a first initialization signal line R2, respectively. The control module 30 determines whether to provide a first initialization signal Vref1 or a second initialization signal Vref2 to initialize the driving transistor M 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 frame before the current display frame. The control module 30 then selects whether to output the first initialization signal Vref1 via the first initialization signal line R1 to initialize the control terminal of the driving transistor M, or to output the second initialization signal Vref2 via the second initialization signal line R2 to initialize the control terminal of the driving transistor M.

[0055] In one embodiment, please continue to see Figure 2 and Figure 5Each pixel circuit 20 specifically includes a light-emitting unit 11, a driving unit 12, and an initialization unit 13. The driving unit 12 is connected to the data line L to receive a data voltage Vdata, and is used 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 is used to provide an initialization signal Vref, such as 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 the data line L, and is connected to the initialization unit 13 through the initialization signal line R, and is used to provide the data voltage Vdata to the driving unit 12 through the data line L, and control the initialization unit 13 to select the first initialization signal Vref1 or the second initialization signal Vref2 to initialize the driving transistor M based on the data voltage Vdata corresponding to the current display frame output by the driving unit 12 and the data voltage Vdata corresponding to the previous frame of the current display frame output by the driving unit 12.

[0056] Please continue to see Figure 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. The initialization unit 13 includes a first initialization unit 131 and a second initialization unit 132. Specifically, the first initialization unit 131 is connected to the first initialization signal line R1, the first scan line S1, and the control terminal of the driving transistor M, and is configured to provide a first initialization signal Vref1 on the first initialization signal line R1 to the driving transistor M in response to a first scan signal on the first scan line S1. The second initialization unit 132 is connected to the second initialization signal line R2, the second scan line S2, and the control terminal of the driving transistor M, and is configured to provide a second initialization signal Vref2 on the second initialization signal line R2 to the driving transistor M in response to a second scan signal on the second scan line S2. The control module 30 is configured to determine the 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 frame before the current display frame, so as to turn on one of the first initialization unit 131 and the second initialization unit 132.

[0057] Specifically, when the control module 30 determines to provide the first initialization signal Vref1 to initialize the driving transistor M, the first initialization unit 131 is controlled to be turned on through 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 through 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.

[0058] For details, please refer to Figure 6 The pixel circuit further includes: a write unit M1 and a storage capacitor C. A first end of the write unit M1 is connected to the data line L to receive the data voltage Vdata. A control end of the write unit M1 is connected to the control module 30 via the third scan line S3. A second end of the write unit M1 is connected to the control end of the drive transistor M. A first plate of the storage capacitor C is connected to the first power line ELVDD, and a second plate of the storage capacitor C is connected to the control end of the drive transistor M. A first end of the drive transistor M is connected to the first power line ELVDD, and a second end of the drive transistor M is connected to the light-emitting unit 11.

[0059] In one embodiment, the write unit M1 includes a write transistor.

[0060] Specifically, the light-emitting unit 11 includes a light-emitting control transistor M2 and a light-emitting element D. A first terminal of the light-emitting control transistor M2 is connected to the second terminal of the driving transistor M, and a control terminal of the light-emitting control transistor M2 is connected to the control module 30 via a fourth scan line S4. A first terminal of the light-emitting element D is connected to the second terminal of the light-emitting control transistor M2, and a second terminal of the light-emitting element D is connected to the second power line ELVSS.

[0061] In one embodiment, the first electrode of the optical element D may be an anode, and the second electrode may be a cathode; the potential of the second power line ELVSS may be lower than the potential of the first power line ELVDD, wherein the second power line ELVSS may be connected to the ground potential.

[0062] The first initialization unit 131 includes a first reset transistor M3, a first end of the first reset transistor M3 is connected to the 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.

[0063] 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.

[0064] Among them, the driving transistor M, the writing transistor, the light emitting control transistor M2, the first reset transistor M3, and the second reset transistor M4 can all be P-type transistors, or all be N-type transistors, or some can be P-type transistors and some can be N-type transistors, which is not limited here.

[0065] Optionally, the pixel circuit may further include a threshold compensation transistor connected between the gate and the second electrode of the driving transistor, a second light-emitting 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, etc. The write transistor is connected between the data line and the first electrode of the driving transistor, and the write unit includes a write transistor and a threshold compensation transistor. The initialization unit may also be connected between the initialization signal line and the second electrode of the driving transistor. The structure of the pixel circuit can be set as needed, and this application is not limited to this.

[0066] For ease of description, this application takes the example that 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 all P-type transistors. Figures 1 to 7 , Figure 7 This is a timing diagram of an embodiment of a pixel circuit in a display panel provided by the present application.

[0067] During the reset phase t1, the control module 30 outputs a shutdown signal (e.g., a high level) to the control terminal of the write unit M1 and the control terminal of the light-emitting control transistor M2 via the third scan line S3 and the fourth scan line S4, respectively, thereby turning off the write unit M1 and the light-emitting control transistor M2. Furthermore, the control module 30 obtains 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. Based on the current value and the historical value of the first parameter, the control module 13 selects the first initialization signal Vref1 or the second initialization signal Vref2 to initialize the drive transistor M.

[0068] 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 a first preset threshold value V1, the control module 30 outputs a shutdown signal (e.g., a high level) to the control terminal of the second reset transistor M4 via the second scan line S2, thereby turning off the second reset transistor M4. The control module 30 also outputs a turn-on signal (e.g., a low level) to the control terminal of the first reset transistor M3 via the first scan line S1, thereby turning on the first reset transistor M3 and initializing the driving transistor M using the first initialization signal Vref1. If the difference ΔV is less than a second preset threshold value V2, the control module outputs a turn-off signal (e.g., a high level) to the control terminal of the first reset transistor M3 via the first scan line S1, thereby turning off the first reset transistor M3. The control module also outputs a turn-off signal (e.g., a high level) to the control terminal of the second reset transistor M4 via the second scan line S2, thereby turning on the second reset transistor M4 and initializing the driving transistor M using the second initialization signal Vref2.

[0069] If the difference ΔV is greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value V1, the control initialization unit 13 uses the initialization signal Vref corresponding to the previous frame of the current display frame to initialize the driving transistor M. Specifically, when the difference ΔV is greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value 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 a shutdown signal, for example, a high level, to the control terminal of the second reset transistor M4 through the second scan line S2, thereby turning off the second reset transistor M4, and outputs a turn-on signal, for example, a low level, to the control terminal of the first reset transistor M3 through the first scan line S1, thereby turning on the first reset transistor M3, thereby initializing the driving transistor M using the first initialization signal Vref1. If the initialization signal Vref corresponding to the previous frame of the currently displayed frame is the second initialization signal Vref2, the control module 30 outputs an off signal to the control end of the first reset transistor M3 through the first scan line S1, for example, it can be a high level, so that the first reset transistor M3 is turned off, and outputs a on signal to the control end of the second reset transistor M4 through the second scan line S2, for example, it can be a low level, so that the second reset transistor M4 is turned on, and the driving transistor M is initialized using the second initialization signal Vref2.

[0070] It should be noted 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. During the initialization process, the residual potential of the previous frame can be cleared to prepare for the writing of the data voltage Vdata of the current display frame, thereby reducing the hysteresis of the driving transistor M and improving the afterimage.

[0071] During the data writing phase t2, the control module 30 outputs a shutdown signal to the control end of the first reset transistor M3, the control end of the second reset transistor M4 and the control end of the light-emitting control transistor M2 through the first scan line S1, the second scan line S2 and the fourth scan line S4, respectively. For example, the signal may be a high level, so that the first reset transistor M3, the second reset transistor M4 and the light-emitting control transistor M2 are turned off, and the control module 30 outputs a turn-on signal to the control end of the writing unit M1 through the third scan line S3. For example, the signal may be a low level, 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 end (gate) of the driving transistor M through the writing unit M1.

[0072] In the light-emitting stage t3, the control module 30 outputs a shutdown signal to the control end of the first reset transistor M3, the control end of the second reset transistor M4 and the control end of the write unit M1 through the first scan line S1, the second scan line S2 and the third scan line S3, respectively. For example, the signal may be a high level, so that the first reset transistor M3, the second reset transistor M4 and the write unit M1 are turned off. The control module 30 outputs a conduction signal to the control end of the light-emitting control transistor M2 through the fourth scan line S4. For example, the signal may be a low level, so that the light-emitting control transistor M2 is turned on. Since the gate voltage of the driving transistor M is Vdata, the current of the driving transistor M at this time is Wherein, Vth is the absolute value voltage, and the current is controlled by the data voltage Vdata.

[0073] Specifically, in the present application, the principle of reducing the hysteresis of the driving transistor M is mainly the first initialization signal Vref1 and the second initialization signal Vref2 corresponding to the first reset transistor M3 and the second reset transistor M4. The control module 30 compares 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 dynamically changes the initialization voltage of the gate of the driving transistor M. This measure can release the holes captured at the channel interface of the driving transistor M when the driving transistor M is turned on, reduce the hysteresis voltage of the driving transistor M, and thereby improve the afterimage.

[0074] See Figure 8 , Figure 8This is a flow chart of an embodiment of a method for driving a display panel provided in the present application. The method for driving a display panel can be used to drive the above-mentioned display panel. The method for driving a display panel includes:

[0075] 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, the size of the initialization signal of the current display frame is determined, wherein the initialization signal is used to initialize the control end of the driving transistor in the pixel circuit in the display panel.

[0076] In some embodiments, the first parameter includes a data voltage, a gray scale, or a parameter related to the data voltage or the gray scale.

[0077] Specifically, the present application determines the size of the initialization signal of the current display frame 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 then initializes the driving transistor by transmitting the corresponding initialization signal Vref through the initialization signal line, which can 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 afterimage.

[0078] Optionally, the previous frame of the currently displayed frame is the previous frame of the currently displayed frame.

[0079] Optionally, determining the size 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: when the difference 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 greater than a first preset threshold, initializing the control end of the driving transistor using the first initialization signal; when the difference is less than a second preset threshold, initializing the control end of the driving transistor using the second initialization signal; the sizes of the first initialization signal and the second initialization signal are different; when the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, initializing the control end of the driving transistor using the initialization signal corresponding to the previous frame of the current display frame.

[0080] In this example, the control module 30 determines 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. In response to the difference ΔV being greater than a first preset threshold value V1, the control module 30 initializes the control terminal of the driving transistor M using a first initialization signal Vref1. In response to the difference ΔV being less than a second preset threshold value V2, the control module 30 initializes the control terminal of the driving transistor M using a second initialization signal Vref2. In response to the difference ΔV being greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value V1, the control module 30 initializes the control terminal of the driving transistor M using the initialization signal corresponding to the frame previous to the current display frame.

[0081] Among them, the first initialization signal Vref1 and the second initialization signal Vref2 have different sizes. 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 end of the driving transistor M, which can 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 afterimage.

[0082] Optionally, determining the size 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: 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 greater than a first preset threshold, initializing the control end of the driving transistor using the first initialization signal; when the ratio is less than a second preset threshold, initializing the control end of the driving transistor using the second initialization signal; the sizes of the first initialization signal and the second initialization signal are different; when the ratio is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, initializing the control end of the driving transistor using the initialization signal corresponding to the previous frame of the current display frame.

[0083] See also Figure 9 , Figure 9 This is a flow chart of a specific embodiment of a method for driving a display panel provided in the present application. The driving method specifically includes:

[0084] Step S1: In the reset phase, 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.

[0085] Specifically, during reset phase t1, the control module 30 outputs a shutdown signal (e.g., a high level) to the control terminal of the write transistor M1 and the control terminal of the light-emitting control transistor M2 via the third scan line S3 and the fourth scan line S4, respectively, thereby turning off the write transistor M1 and the light-emitting control transistor M2. Furthermore, the control module 30 obtains 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. Based on the current value and the historical value of the first parameter, the control module 13 selects the first initialization signal Vref1 or the second initialization signal Vref2 to initialize the drive transistor M.

[0086] Specifically, the control module 30 determines a difference ΔV between a data voltage Vdata corresponding to a current value of the first parameter and a data voltage Vdata corresponding to a historical value of the first parameter. If the difference ΔV is greater than a first preset threshold value V1, the control module 30 outputs a shutdown signal (e.g., a high level) to the control terminal of the second reset transistor M4 via the second scan line S2, thereby turning off the second reset transistor M4. The control module 30 also outputs a turn-on signal (e.g., a low level) to the control terminal of the first reset transistor M3 via the first scan line S1, thereby turning on the first reset transistor M3 and initializing the driving transistor M using the first initialization signal Vref1. If the difference ΔV is less than a second preset threshold value V2, the control module outputs a turn-off signal (e.g., a high level) to the control terminal of the first reset transistor M3 via the first scan line S1, thereby turning off the first reset transistor M3. The control module also outputs a turn-off signal (e.g., a high level) to the control terminal of the second reset transistor M4 via the second scan line S2, thereby turning on the second reset transistor M4 and initializing the driving transistor M using the second initialization signal Vref2.

[0087] If the difference ΔV is greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value V1, the control initialization unit 13 uses the initialization signal Vref corresponding to the previous frame of the current display frame to initialize the driving transistor M. Specifically, when the difference ΔV is greater than or equal to the second preset threshold value V2 and less than or equal to the first preset threshold value 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 a shutdown signal, for example, a high level, to the control terminal of the second reset transistor M4 through the second scan line S2, thereby turning off the second reset transistor M4, and outputs a turn-on signal, for example, a low level, to the control terminal of the first reset transistor M3 through the first scan line S1, thereby turning on the first reset transistor M3, thereby initializing the driving transistor M using the first initialization signal Vref1. If the initialization signal Vref corresponding to the previous frame of the currently displayed frame is the second initialization signal Vref2, the control module 30 outputs an off signal to the control end of the first reset transistor M3 through the first scan line S1, for example, it can be a high level, so that the first reset transistor M3 is turned off, and outputs a on signal to the control end of the second reset transistor M4 through the second scan line S2, for example, it can be a low level, so that the second reset transistor M4 is turned on, and the driving transistor M is initialized using the second initialization signal Vref2.

[0088] It should be noted 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. During the initialization process, the residual potential of the previous frame can be cleared to prepare for the writing of the data voltage Vdata of the current display frame, thereby reducing the hysteresis of the driving transistor M and improving the afterimage.

[0089] Step S2: In the data writing phase, a data voltage is written to the driving unit through the data line, so that the driving unit generates a corresponding driving current based on the written data voltage.

[0090] Specifically, in the data writing phase t2, the control module 30 outputs a shutdown signal to the control end of the first reset transistor M3, the control end of the second reset transistor M4, and the control end of the light-emitting control transistor M2 through the first scan line S1, the second scan line S2, and the fourth scan line S4, respectively. For example, the signal may be a high level, so that the first reset transistor M3, the second reset transistor M4, and the light-emitting control transistor M2 are turned off, and the control module 30 outputs a turn-on signal to the control end of the write transistor M1 through the third scan line S3. For example, the signal may be a low level, so that the write 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 end (gate) of the driving transistor M through the write transistor M1.

[0091] Step S3: In the light-emitting stage, the light-emitting unit emits light based on the driving current generated by the driving unit.

[0092] Specifically, in the light-emitting stage t3, the control module 30 outputs a shutdown signal to the control end of the first reset transistor M3, the control end of the second reset transistor M4, and the control end of the write transistor M1 through the first scan line S1, the second scan line S2, and the third scan line S3, respectively. For example, the signal may be at a high level, so that the first reset transistor M3, the second reset transistor M4, and the write transistor M1 are turned off. The control module 30 outputs a conduction signal to the control end of the light-emitting control transistor M2 through the fourth scan line S4. For example, the signal may be at a low level, so that the light-emitting control transistor M2 is turned on. Since the gate voltage of the driving transistor M is Vdata, the current of the driving transistor M at this time is Where Vth is the absolute value voltage and the current is controlled by the Vdata voltage.

[0093] Specifically, in the present application, the principle of reducing the hysteresis of the driving transistor M is mainly the first initialization signal Vref1 and the second initialization signal Vref2 corresponding to the first reset transistor M3 and the second reset transistor M4. The control module 30 compares 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 dynamically changes the initialization voltage of the gate of the driving transistor M. This measure can release the holes captured at the channel interface of the driving transistor M when the driving transistor M is turned on, reduce the hysteresis voltage of the driving transistor M, and thereby improve the afterimage.

[0094] See Figure 10 , Figure 10 This is a schematic structural diagram of an embodiment of a display device provided in the present application. The display device 200 includes the display panel 100 provided in any of the above embodiments.

[0095] Specifically, the display device 200 can be a mobile phone, a television, a tablet computer, a laptop computer, a smart watch, etc., and the display device 200 generally includes a display panel and a shell for carrying the display panel, wherein the display panel can include an OLED (Organic Light Emitting Diode) display panel, an AMOLED (Active Matrix / Organic Light Emitting Diode) display panel, a Micro LED (MicroLight Emitting Diode) display panel, etc.

[0096] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: include: a plurality of pixel circuits, each pixel circuit including a driving transistor; a control module connected to the pixel circuit via an initialization signal line, the control module being configured to determine a magnitude of an initialization signal for a current display frame based on a current value of a first parameter corresponding to a current display frame and a historical value of the first parameter corresponding to a frame preceding the current display frame, and to initialize the control terminal of the driving transistor via the initialization signal transmitted via the initialization signal line, wherein the first parameter includes a data voltage, a grayscale, or a parameter related to the data voltage or the grayscale; The previous frame of the currently displayed frame is the previous frame of the currently displayed frame; 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 the 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 greater than a first preset threshold; When the difference is less than a second preset threshold, initializing the control terminal of the driving transistor using a second initialization signal; the first initialization signal and the second initialization signal have different magnitudes; When the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control end of the driving transistor is initialized using an initialization signal corresponding to a previous frame of the current display frame.

2. The display panel according to claim 1, wherein: The difference is a current value of the first parameter corresponding to the current display frame minus a historical value of the first parameter corresponding to the previous frame of the current display frame; the first initialization signal is greater than the second initialization signal.

3. The display panel according to any one of claims 1 to 2, wherein: The pixel circuit includes a first initialization unit and a second initialization unit, and 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 the control terminal of the driving transistor, and is used to provide the first initialization signal on the first initialization signal line to the driving transistor in response to the first scan signal on the first scan line; The second initialization unit is connected to the second initialization signal line, the second scan line and the control terminal of the driving transistor, and is used to provide the driving transistor with a second initialization signal on the second initialization signal line in response to a second scan signal on the second scan line; The control module is electrically connected to the first scan line and the second scan line, and is used to determine the signals on the first scan line and the second scan 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 turn on one of the first initialization unit and the second initialization unit.

4. The display panel according to claim 3, wherein: The first initialization unit includes: a first reset transistor, wherein a first end of the first reset transistor is connected to the control end of the driving transistor, a second end of the first reset transistor is connected to the first initialization signal line, and the control end of the first reset transistor is connected to the control module via the first scan line; The second initialization unit includes: a second reset transistor, wherein a first end of the second reset transistor is connected to the control end of the driving transistor, a second end of the second reset transistor is connected to the second initialization signal line, and a control end of the second reset transistor is connected to the control module through the second scan line.

5. The display panel according to any one of claims 1 to 2, wherein: The pixel circuit further includes: a writing unit, wherein a first end of the writing unit is connected to the data line to receive a data signal, a control end of the writing unit is connected to the control module via a third scan line, and a second end of the writing unit is connected to the control end of the driving transistor; A storage capacitor, wherein a first plate of the storage capacitor is connected to a first power line, and a second plate of the storage capacitor is connected to a control terminal of the driving transistor.

6. The display panel according to any one of claims 1 to 2, wherein: The pixel circuit further includes a light emitting control transistor, a first end of the light emitting control transistor is connected to the second end of the driving transistor, and a control end of the light emitting control transistor is connected to the control module via a fourth scan line; A light emitting element, wherein a first electrode of the light emitting element is connected to the second end of the light emitting control transistor, and a second electrode of the light emitting element is connected to the second power line.

7. A display panel, characterized in that: include: a plurality of pixel circuits, each pixel circuit including a driving transistor; a control module connected to the pixel circuit via an initialization signal line, the control module being configured to determine a magnitude of an initialization signal for a current display frame based on a current value of a first parameter corresponding to a current display frame and a historical value of the first parameter corresponding to a frame preceding the current display frame, and to initialize the control terminal of the driving transistor via the initialization signal transmitted via the initialization signal line, wherein the first parameter includes a data voltage, a grayscale, or a parameter related to the data voltage or the grayscale; The pixel circuit includes a first initialization unit and a second initialization unit, and 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 the control terminal of the driving transistor, and is used to provide the first initialization signal on the first initialization signal line to the driving transistor in response to the first scan signal on the first scan line; The second initialization unit is connected to the second initialization signal line, the second scan line and the control terminal of the driving transistor, and is used to provide the driving transistor with a second initialization signal on the second initialization signal line in response to a second scan signal on the second scan line; The control module is electrically connected to the first scan line and the second scan line, and is used to determine the signals on the first scan line and the second scan 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 turn on one of the first initialization unit and the second initialization unit.

8. The display panel according to claim 7, wherein: The first initialization unit includes: a first reset transistor, wherein a first end of the first reset transistor is connected to the control end of the driving transistor, a second end of the first reset transistor is connected to the first initialization signal line, and the control end of the first reset transistor is connected to the control module via the first scan line; The second initialization unit includes: a second reset transistor, wherein a first end of the second reset transistor is connected to the control end of the driving transistor, a second end of the second reset transistor is connected to the second initialization signal line, and a control end of the second reset transistor is connected to the control module through the second scan line.

9. A method for driving a display panel, characterized in that: include: determining, based on a current value of a first parameter corresponding to a current display frame and a historical value of the first parameter corresponding to a frame preceding the current display frame, a magnitude of an initialization signal for the current display frame, wherein the initialization signal is used to initialize a control terminal of a driving transistor in a pixel circuit in the display panel; the first parameter includes a data voltage, a grayscale, or a parameter related to the data voltage or the grayscale; The previous frame of the currently displayed frame is the previous frame of the currently displayed frame; The determining the size 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 the control terminal of the driving transistor using a first initialization signal when a difference between a current value of the 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 greater than a first preset threshold; When the difference is less than a second preset threshold, initializing the control terminal of the driving transistor using a second initialization signal; the first initialization signal and the second initialization signal have different magnitudes; When the difference is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, the control end of the driving transistor is initialized using an initialization signal corresponding to a previous frame of the current display frame.

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