Display panel driving method, device and electronic equipment

Abstract

The embodiments of the present application provide a method, device and electronic device for driving a display panel, wherein the picture refresh cycle of the display panel includes a refresh frame and a hold frame, wherein the refresh frame and the hold frame both include a non-luminous phase and a luminous phase, and the driving method includes: when the display panel is in a target display mode, adjusting the duration of the non-luminous phase in the hold frame to be greater than the duration of the non-luminous phase in the refresh frame; and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, wherein the refresh rate corresponding to the target display mode is less than a first preset threshold. The embodiments of the present application can improve the flickering phenomenon of the display panel.

Description

Technical Field

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

[0002] With the development of display technology, the standby time of display devices has become a point of concern to users. In order to meet the needs of users, it is necessary to reduce the power consumption of display panels and / or driver chips, and adaptive refresh rate can better meet this need.

[0003] However, the inventors of the present application have discovered through research that when the display panel displays at a low refresh rate, there is a problem of brightness jumps, ie flickering. Summary of the invention

[0004] Embodiments of the present application provide a display panel driving method, device, and electronic device, which can improve the flickering phenomenon of the display panel.

[0005] In a first aspect, an embodiment of the present application provides a method for driving a display panel, wherein a picture refresh cycle of the display panel includes a refresh frame and a hold frame, wherein both the refresh frame and the hold frame include a non-luminous phase and a luminous phase, and the driving method includes: when the display panel is in a target display mode, adjusting the duration of the non-luminous phase in the hold frame to be greater than the duration of the non-luminous phase in the refresh frame; and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, wherein the refresh rate corresponding to the target display mode is less than a first preset threshold value.

[0006] According to an implementation of the first aspect of the present application, before adjusting the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the driving method also includes: obtaining the total number of rows of sub-pixels in the display panel, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the holding frame before adjustment; determining the brightness corresponding to the sub-pixels per unit row according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, and the brightness of the display panel in the refresh frame; determining the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels per unit row, and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame; adjusting the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, specifically including: adjusting the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to the target number of rows.

[0007] In this way, the embodiment of the present application accurately calculates the number of rows of sub-pixels that need to be adjusted in the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and adjusts the holding frame based on the number of rows, thereby ensuring to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame is determined according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels per unit row, and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, specifically including: calculating a first difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment; calculating a ratio of the first difference to the brightness corresponding to the sub-pixels per unit row to obtain an adjustment value for the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame; and determining the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame according to the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0009] In this way, the embodiment of the present application accurately calculates the adjustment value of the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame according to the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and accurately determines the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame by using the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame. After adjusting the holding frame with the target number of rows, it can largely ensure that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the target number of rows of sub-pixels corresponding to the non-light-emitting phase in the frame is determined according to the following expression:

[0011]

[0012] Among them, Hi represents the target number of rows, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixel per unit row number, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, before adjusting the duration of the non-luminous phase in the holding frame to make it greater than the duration of the non-luminous phase in the refresh frame, the driving method also includes: obtaining the total number of rows of sub-pixels in the display panel, the duration of the non-luminous phase in the refresh frame, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the holding frame before adjustment; determining the brightness corresponding to the sub-pixels per unit row number according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the brightness of the display panel in the refresh frame; and obtaining the brightness corresponding to the sub-pixels per unit row number according to the total number of rows. The duration of the non-luminous stage and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame are used to determine the duration corresponding to the sub-pixels per row; according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels per row, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame and the duration corresponding to the sub-pixels per row, the target duration corresponding to the non-luminous stage in the hold frame is determined; the duration of the non-luminous stage in the hold frame is adjusted to be greater than the duration of the non-luminous stage in the refresh frame, specifically including: adjusting the duration of the non-luminous stage in the hold frame to the target duration.

[0014] In this way, the embodiment of the present application accurately calculates the duration that needs to be adjusted for the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and adjusts the holding frame based on the duration, thereby ensuring to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the target duration corresponding to the non-luminous stage in the holding frame is determined according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels per unit row, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, and the duration corresponding to the sub-pixels per unit row, specifically including: calculating a first difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment; calculating a ratio of the first difference to the brightness corresponding to the sub-pixels per unit row to obtain an adjustment value for the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame; determining the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame according to the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame; determining the target duration corresponding to the non-luminous stage in the holding frame according to the target number of rows and the duration corresponding to the sub-pixels per unit row.

[0016] In this way, the embodiment of the present application accurately calculates the adjustment value of the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and accurately determines the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame based on the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame. According to the target number of rows and the duration corresponding to the sub-pixels per unit row, the target duration corresponding to the non-luminous stage in the holding frame is accurately determined. After adjusting the holding frame with the target duration, it can be ensured to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, which greatly improves the flicker phenomenon and enhances the display effect of the display panel.

[0017] According to any of the foregoing implementations of the first aspect of the present application, the target duration corresponding to the non-light-emitting phase in the frame is determined according to the following expression:

[0018]

[0019] Among them, Ti represents the target duration, Hi represents the target number of rows, Δt represents the duration corresponding to the sub-pixels per unit row, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixels per unit row, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, a picture refresh cycle of the display panel includes a refresh frame and N holding frames, N ≥ 2 and is an integer; adjusting the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, specifically including: adjusting the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the jth picture refresh cycle, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the jth picture refresh cycle.

[0021] The inventor of the present application has found through research that the brightness of the display panel at the last holding frame in the j-1th picture refresh cycle is greatly different from the brightness of the display panel at the refresh frame in the j-1th picture refresh cycle. Therefore, by adjusting the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the j-1th picture refresh cycle, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the j-1th picture refresh cycle, the brightness of the display panel at the last holding frame in the j-1th picture refresh cycle can be made the same or similar to the brightness of the display panel at the refresh frame in the j-1th picture refresh cycle, thereby effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, a picture refresh cycle of the display panel includes a refresh frame and N holding frames, N ≥ 2 and is an integer; the duration of the non-luminous phase in the holding frame is adjusted to be greater than the duration of the non-luminous phase in the refresh frame, and / or, the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame is adjusted to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, specifically including: adjusting the duration of the non-luminous phase in the N holding frames within the same picture refresh cycle to be greater than the duration of the non-luminous phase in the refresh frame, and / or, adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the N holding frames within the same picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0023] The inventor of the present application has found through research that when the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in N holding frames in the same picture refresh cycle are equal to the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in the refresh frame, the brightness corresponding to each of the N holding frames in the same picture refresh cycle is higher than the brightness corresponding to the refresh frame. Therefore, by adjusting the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in N holding frames in the same picture refresh cycle to be greater than the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in the refresh frame, the brightness corresponding to each of the N holding frames in the same picture refresh cycle can be made the same or similar to the brightness corresponding to the refresh frame, thereby effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, in the same screen refresh cycle, the i-th hold frame is between the refresh frame and the i+1-th hold frame, and i is a positive integer; the duration of the non-luminous phase in the i+1-th hold frame is greater than or equal to the duration of the non-luminous phase in the i-th hold frame, and / or the number of rows of sub-pixels corresponding to the non-luminous phase in the i+1-th hold frame is greater than or equal to the number of rows of sub-pixels corresponding to the non-luminous phase in the i-th hold frame.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a light-emitting element, which emits light under the control of a light-emitting control signal, and in a non-light-emitting stage, the level of the light-emitting control signal is a cut-off level; in a light-emitting stage, the level of the light-emitting control signal is a turn-on level; the duration of the non-light-emitting stage in the holding frame is adjusted to be greater than the duration of the non-light-emitting stage in the refresh frame, and / or the number of rows of sub-pixels corresponding to the non-light-emitting stage in the holding frame is adjusted to be greater than the number of rows of sub-pixels corresponding to the non-light-emitting stage in the refresh frame, specifically including: adjusting the duration of the light-emitting control signal in the holding frame to be at the cut-off level to be greater than the duration of the light-emitting control signal in the refresh frame to be at the cut-off level, and / or adjusting the number of rows of sub-pixels corresponding to when the light-emitting control signal in the holding frame is at the cut-off level to be greater than the number of rows of sub-pixels corresponding to when the light-emitting control signal in the refresh frame is at the cut-off level.

[0026] In a second aspect, an embodiment of the present application provides a driving device for a display panel, and the driving device for a display panel includes:

[0027] An adjustment module is used to adjust the duration of the non-luminous phase in the hold frame to make it greater than the duration of the non-luminous phase in the refresh frame, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to make it greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame when the display panel is in a target display mode, wherein the refresh rate corresponding to the target display mode is less than a first preset threshold.

[0028] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the display panel driving method provided in the first aspect are implemented.

[0029] The driving method, device and electronic device of the display panel of the embodiment of the present application adjust the duration of the non-luminous stage in the holding frame to be greater than the duration of the non-luminous stage in the refresh frame, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame when the display panel is in the target display mode, thereby reducing the difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame, so that the brightness of the display panel in the refresh frame is the same as or similar to the brightness of the display panel in the holding frame, effectively improving the flicker phenomenon and enhancing the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 A schematic diagram of a brightness curve of a display panel;

[0032] Figure 2 A circuit diagram of a pixel circuit in a display panel;

[0033] Figure 3 for Figure 2 A driving timing diagram corresponding to the pixel circuit shown;

[0034] Figure 4 A schematic diagram of a flow chart of a method for driving a display panel provided in an embodiment of the present application;

[0035] Figure 5 Another schematic diagram of a flow chart of a method for driving a display panel provided in an embodiment of the present application;

[0036] Figure 6 for Figure 5 A schematic diagram of a flow chart of S503 in the method for driving a display panel shown;

[0037] Figure 7 Another schematic diagram of a flow chart of a method for driving a display panel provided in an embodiment of the present application;

[0038] Figure 8 for Figure 7 A schematic diagram of a flow chart of S704 in the method for driving a display panel shown;

[0039] Fig. 9 is another schematic diagram of a brightness curve of a display panel;

[0040] Fig.10A schematic diagram of a structure of a driving device for a display panel provided in an embodiment of the present application;

[0041] Fig.11 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] It should be noted that the transistors in the embodiments of the present application are described by taking N-type transistors as an example, but are not limited to N-type transistors, and can also be replaced by P-type transistors. For N-type transistors, the on-level is a high level and the off-level is a low level. That is, when the gate of the N-type transistor is at a high level, the first pole and the second pole are connected, and when the gate of the N-type transistor is at a low level, the first pole and the second pole are disconnected. For P-type transistors, the on-level is a low level and the off-level is a high level. That is, when the control terminal of the P-type transistor is at a low level, the first pole and the second pole are connected, and when the control terminal of the P-type transistor is at a high level, the first pole and the second pole are disconnected. In a specific implementation, the gate of each of the above-mentioned transistors serves as its control electrode, and, according to the signal of the gate of each transistor and its type, its first electrode can be used as the source and the second electrode as the drain, or its first electrode can be used as the drain and the second electrode as the source, without making any distinction here. In addition, the on-level and off-level in the embodiments of the present invention are both general terms, the on-level refers to any level that can turn on the transistor, and the off-level refers to any level that can turn off / shut down the transistor.

[0046] In the embodiments of the present application, the term “electrically connected” may refer to a direct electrical connection between two components, or may refer to an electrical connection between two components via one or more other components.

[0047] In the embodiment of the present application, the first node, the second node and the third node are only defined for the convenience of describing the circuit structure, and the first node, the second node and the third node are not actual circuit units.

[0048] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0049] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0050] As mentioned above, the inventors of the present application have discovered that in the related art, when the display panel displays at a low refresh rate, there is a problem of brightness jumps, that is, flickering.

[0051] In order to solve the flickering problem of the display panel when displaying at a low refresh rate, the inventor of the present application first studied and analyzed the root causes of the above technical problems. The specific research and analysis process is as follows:

[0052] Figure 1 is a schematic diagram of a brightness curve of a display panel. Figure 1 As shown, in order to reduce power consumption, when the display panel displays at a low refresh rate, a picture refresh cycle H of the display panel can be divided into a refresh frame h1 and a hold frame h2. Figure 1 The duration of the non-luminous phase of the refresh frame h1 in the display is equal to the duration of the non-luminous phase of the hold frame h2, that is, Figure 1 Schematic diagram of the brightness curve when the duration of the non-luminous phase of the refresh frame h1 is equal to the duration of the non-luminous phase of the hold frame h2. Figure 1 An example is taken for illustration that a picture refresh cycle includes 1 refresh frame h1 and 1 hold frame h2, but it is understandable that a picture refresh cycle may also include 1 refresh frame h1 and multiple hold frames h2, which will be described in detail below and will not be repeated here.

[0053] During the refresh frame h1, the gate potential of the driving transistor in the display panel is refreshed. During the hold frame h2, the gate potential of the driving transistor in the display panel is not refreshed, thereby reducing power consumption.

[0054] For ease of understanding, the difference between the refresh frame h1 and the hold frame h2 is described in detail below using a 7T1C pixel circuit as an example. It should be noted that the embodiments of the present application are not only applicable to 7T1C pixel circuits, but are also applicable to 2T1C pixel circuits, 7T2C pixel circuits, 8T1C pixel circuits, 9T1C pixel circuits or other types of pixel circuits, and do not constitute a limitation on the embodiments of the present application.

[0055] Figure 2 A circuit diagram of a pixel circuit in a display panel. Figure 3 for Figure 2 A driving timing diagram corresponding to the pixel circuit shown in FIG. Figure 2 As shown, taking the 7T1C pixel circuit as an example, the pixel circuit may include a driving transistor T1, a data writing transistor T2, a threshold compensation transistor T3, a first reset transistor T4, a first light emission control transistor T5, a second light emission control transistor T6, a second reset transistor T7 and a storage capacitor Cst. The gate of the driving transistor T1 is electrically connected to the first node N1, the first electrode of the driving transistor T1 is electrically connected to the second node N2, and the second electrode of the driving transistor T1 is electrically connected to the third node N3.

[0056] Combination Figure 2 and Figure 3As shown, the refresh frame h1 may include an initialization phase t1, a data writing phase t2, and a light emitting phase t3. In the initialization phase t1 of the refresh frame h1, the first reset transistor T4 is turned on in response to the on-level output by the first scan signal line S1, and the first reference voltage signal of the first reference voltage signal line Vref1 is transmitted to the first node N1 (i.e., the gate of the driving transistor T1), and the first node N1 is reset. In the data writing phase t2 of the refresh frame h1, the data writing transistor T2 is turned on in response to the on-level output by the second scan signal line S2, and the data signal is written; the threshold compensation transistor T3 is turned on in response to the on-level output by the third scan signal line S3, and the gate of the driving transistor T1 is connected to the second electrode of the driving transistor T1, so as to achieve the compensation of the threshold voltage of the driving transistor T1; the second reset transistor T7 is turned on in response to the on-level output by the fourth scan signal line S4, and the second reference voltage signal of the second reference voltage signal line Vref2 is transmitted to the anode of the light emitting element D, and the anode of the light emitting element D is reset. In the light emitting stage t3, the first light emitting control transistor T5 and the second light emitting control transistor T6 are turned on in response to the on level output by the light emitting control signal line EM, and the light emitting element D emits light.

[0057] Different from the refresh frame h1, the hold frame h2 may not include the initialization phase t1 and the data writing phase t2, that is, it does not include the process of resetting the first node N1 and writing data, thereby reducing power consumption.

[0058] Continue to see Figure 1 and Figure 2 As shown, the inventor of the present application has found that during the discharge process of the driving transistor T1, the gate of the driving transistor T1 is always in a constant voltage state, and the threshold voltage of the driving transistor T1 will drift. As time increases, the drift degree of the threshold voltage of the driving transistor T1 will also increase, so that the drift degree of the threshold voltage of the driving transistor T1 during the refresh frame h1 is different from the drift degree of the threshold voltage of the driving transistor T1 during the holding frame h2, which in turn causes the brightness of the display panel to be different when the frame is held and when the frame is refreshed, resulting in a flicker phenomenon.

[0059] In view of the above research findings of the inventors, the embodiments of the present application provide a method, device and electronic device for driving a display panel, which can solve the flickering problem of the display panel when displaying at a low refresh rate in the related art.

[0060] The technical concept of the embodiments of the present application is: when the display panel is in the target display mode, the duration of the non-luminous stage in the maintenance frame is adjusted to be greater than the duration of the non-luminous stage in the refresh frame, and / or the number of rows of sub-pixels corresponding to the non-luminous stage in the maintenance frame is adjusted to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, thereby reducing the difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the maintenance frame, so that the brightness of the display panel in the refresh frame is the same as or similar to the brightness of the display panel in the maintenance frame, effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0061] The following first introduces a driving method of a display panel provided in an embodiment of the present application.

[0062] In the embodiment of the present application, the image refresh cycle of the display panel may include a refresh frame and a hold frame. In the refresh frame, the gate potential of the driving transistor in the display panel is refreshed. In the hold frame, the gate potential of the driving transistor in the display panel is not refreshed. For details, see the above Figure 2 and Figure 3 The refresh frame and the hold frame may both include a non-light-emitting phase and a light-emitting phase. Figure 2 and Figure 3 As shown, in the non-light-emitting stage nf, the light-emitting control signal output by the light-emitting control signal line EM can be a cut-off level (such as a high level), and the light-emitting element D does not emit light. In the light-emitting stage t3, the light-emitting control signal output by the light-emitting control signal line EM can be a turn-on level (such as a low level), and the light-emitting element D emits light.

[0063] Figure 4 A schematic diagram of a process flow of a method for driving a display panel provided in an embodiment of the present application. Figure 4 As shown, the driving method of the display panel may include the following steps:

[0064] S101. When the display panel is in the target display mode, adjust the duration of the non-luminous phase in the hold frame to make it greater than the duration of the non-luminous phase in the refresh frame; and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to make it greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0065] Among them, the refresh rate corresponding to the target display mode is less than the first preset threshold. That is, the target display mode can be a display mode corresponding to a low refresh rate. The specific size of the first preset threshold can be flexibly adjusted according to actual conditions, and the embodiment of the present application does not limit this.

[0066] Since the duration of the holding frame is equal to the duration of the refresh frame, by adjusting the duration of the non-luminous stage in the holding frame to be greater than the duration of the non-luminous stage in the refresh frame, it is equivalent to making the non-luminous time of the light-emitting element in the holding frame greater than the non-luminous time in the refresh frame, or making the luminous duration of the light-emitting element in the holding frame less than the luminous duration in the refresh frame. In this way, the brightness of the display panel when holding the frame can be reduced, and the difference between the brightness of the display panel when refreshing the frame and the brightness of the display panel when holding the frame can be reduced, so that the brightness of the display panel when refreshing the frame is the same as or similar to the brightness of the display panel when holding the frame, effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0067] It can be understood that the display panel may include N rows of sub-pixels arranged in sequence along the column direction, where N is an integer greater than 1. The number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame can be understood as the number of rows of sub-pixels in the non-luminous stage in the N rows of sub-pixels in a frame corresponding to the hold frame, that is, the number of non-luminous sub-pixel rows in the N rows of sub-pixels, which may be referred to as sub-pixel rows in the non-luminous stage in the hold frame. Similarly, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame can be understood as the number of rows of sub-pixels in the non-luminous stage in the N rows of sub-pixels in a frame corresponding to the refresh frame, that is, the number of non-luminous sub-pixel rows in the N rows of sub-pixels, which may be referred to as sub-pixel rows in the non-luminous stage in the refresh frame.

[0068] By adjusting the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the number of non-luminous sub-pixel rows in the holding frame can be increased, or the number of luminous sub-pixel rows in the holding frame can be reduced, thereby reducing the brightness of the display panel in the holding frame, and narrowing the difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame, so that the brightness of the display panel in the refresh frame is the same as or similar to the brightness of the display panel in the holding frame, effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0069] According to some embodiments of the present application, optionally, the brightness of the display panel when maintaining the frame can be adjusted based on the brightness of the display panel when refreshing the frame, so that the brightness of the display panel when refreshing the frame is the same or similar to the brightness of the display panel when maintaining the frame, thereby improving the flicker phenomenon.

[0070] Specifically, in some embodiments, for example, the target number of sub-pixel rows corresponding to the non-light-emitting phase in the holding frame may be determined in the following manner, thereby adjusting the brightness of the display panel when the frame is held.

[0071] Figure 5 Another schematic diagram of a method for driving a display panel provided in an embodiment of the present application is shown in FIG. Figure 5As shown, according to some embodiments of the present application, optionally, before S101, adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to make it greater than the number of rows of sub-pixels in the non-luminous phase in the refresh frame, the driving method may further include the following steps S501 to S503.

[0072] S501, obtaining the total number of rows of sub-pixels in the display panel, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment.

[0073] Among them, the total number of rows of sub-pixels in the display panel is known, for example, it can be determined according to the resolution of the display panel. The number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame is known. The brightness of the display panel during the refresh frame can be obtained by, for example, measuring with an optical measuring device when the display panel displays a frame corresponding to the refresh frame. Similarly, the brightness of the display panel during the hold frame before adjustment can be obtained by, for example, measuring with an optical measuring device when the display panel displays a frame corresponding to the hold frame before adjustment. Figure 1 As shown, in some embodiments, the brightness L1 of the display panel during the refresh frame can be specifically the maximum brightness of the display panel during the refresh frame. The brightness Li of the display panel during the hold frame before adjustment can be specifically the maximum brightness of the display panel during the hold frame before adjustment.

[0074] In some examples, the duration of the non-light-emitting phase in the hold frame before adjustment may be equal to the duration of the non-light-emitting phase in the refresh frame.

[0075] S502, determining the brightness corresponding to the sub-pixels per unit row number according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the brightness of the display panel during the refresh frame.

[0076] In some embodiments, for example, the brightness corresponding to the sub-pixels of a unit row may be determined according to the following expression (1):

[0077]

[0078] Among them, c represents the brightness corresponding to the sub-pixels of the unit row number, that is, the brightness corresponding to a row of sub-pixels in the luminous state; L1 represents the brightness of the display panel during the refresh frame; V represents the total number of rows of sub-pixels in the display panel; H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0079] For example, at the moment of collecting the brightness L1, there are n rows of sub-pixels in the display panel that emit light, and n is a positive integer. Then, the brightness L1 is the sum of the brightness of the n rows of sub-pixels. By calculating the ratio of the brightness L1 to the number n of the n rows of sub-pixels, the average brightness corresponding to a row of sub-pixels in the light-emitting state, i.e., c, can be obtained.

[0080] S503. Determine the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels per unit row, and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0081] In S503, according to the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment, the brightness deviation between the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment can be determined. According to the brightness deviation and the brightness corresponding to the sub-pixels per unit row, the row number deviation between the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame and the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame can be determined. According to the row number deviation and the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the target number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame can be determined.

[0082] Accordingly, S101, adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to make it greater than the number of rows of sub-pixels in the non-luminous phase in the refresh frame, may specifically include the following steps:

[0083] The number of rows of sub-pixels corresponding to the non-light-emitting phase in the frame is adjusted to the target number of rows.

[0084] Specifically, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame can remain unchanged, while the number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame is adjusted to the target number of rows, so that the number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame is larger than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, thereby making the brightness of the display panel in the refresh frame the same or similar to the brightness of the display panel in the hold frame, thereby improving the flicker phenomenon.

[0085] In this way, the embodiment of the present application accurately calculates the number of rows of sub-pixels that need to be adjusted in the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and adjusts the holding frame based on the number of rows, thereby ensuring to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0086] Figure 6 for Figure 5 A schematic diagram of a flow chart of S503 in the method for driving a display panel shown in FIG. Figure 6 As shown, in some specific embodiments, optionally, S503, based on the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels per unit row, and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, determines the target number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame, specifically including the following steps S601 to S603.

[0087] S601. Calculate a first difference between the brightness of the display panel in a refresh frame and the brightness of the display panel in a hold frame before adjustment.

[0088] Since the brightness of the display panel in the holding frame before adjustment is usually greater than the brightness of the display panel in the refresh frame, the first difference can be the difference between the brightness of the display panel in the holding frame before adjustment and the brightness of the display panel in the refresh frame.

[0089] S602: Calculate the ratio of the first difference value to the brightness corresponding to the sub-pixels of a unit row number, and obtain an adjustment value of the number of rows of sub-pixels corresponding to the non-light-emitting stage in the frame.

[0090] The adjustment value is the row number deviation between the number of sub-pixels corresponding to the non-luminous phase in the hold frame and the number of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0091] S603 , determining a target number of sub-pixel rows corresponding to the non-luminous phase in the retention frame according to the adjustment value and the number of sub-pixel rows corresponding to the non-luminous phase in the refresh frame.

[0092] In S603, the sum of the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame may be calculated to obtain the target number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame.

[0093] In this way, the embodiment of the present application accurately calculates the adjustment value of the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame according to the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and accurately determines the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame by using the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame. After adjusting the holding frame with the target number of rows, it can largely ensure that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0094] In some specific embodiments, optionally, the target number of sub-pixels corresponding to the non-light-emitting phase in the frame may be determined according to the following expression (2):

[0095]

[0096] Among them, Hi represents the target number of rows, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixel per unit row number, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0097] Figure 7 Another schematic diagram of a method for driving a display panel provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, according to some other embodiments of the present application, optionally, before S101, adjusting the duration of the non-luminous phase in the hold frame to make it greater than the duration of the non-luminous phase in the refresh frame, the driving method may further include the following steps S701 to S704.

[0098] S701, obtain the total number of rows of sub-pixels in the display panel, the duration of the non-luminous phase in the refresh frame, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment.

[0099] Different from the above step S501, in S701, the duration of the non-light-emitting phase in the refresh frame is also obtained, wherein the duration of the non-light-emitting phase in the refresh frame is a known quantity.

[0100] S702, determining the brightness corresponding to the sub-pixels per unit row number according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the brightness of the display panel during the refresh frame.

[0101] The specific process of S702 is the same as that of S502 , please refer to the description of S502 above.

[0102] S703 , determining the duration corresponding to sub-pixels per row according to the duration of the non-luminous phase in the refresh frame and the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0103] In S703, the ratio of the duration of the non-luminous phase in the refresh frame to the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame may be calculated, thereby obtaining the duration corresponding to one row of sub-pixels.

[0104] S704, determine the target duration corresponding to the non-luminous phase in the holding frame based on the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels per unit row, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the duration corresponding to the sub-pixels per unit row.

[0105] In S704, the brightness deviation between the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment can be determined based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment. According to the brightness deviation and the brightness corresponding to the sub-pixels per unit row number, the row number deviation between the number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame can be determined. According to the row number deviation and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the target number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame can be determined. If the duration corresponding to a row of sub-pixels is known, then the target duration corresponding to the non-luminous stage in the hold frame can be determined based on the target number of rows and the duration corresponding to a row of sub-pixels.

[0106] Accordingly, S101, adjusting the duration of the non-light-emitting phase in the hold frame to make it greater than the duration of the non-light-emitting phase in the refresh frame, may specifically include the following steps:

[0107] The duration of the non-light-emitting phase in the hold frame is adjusted to the target duration.

[0108] Specifically, the duration of the non-luminous phase in the refresh frame can remain unchanged, while the duration of the non-luminous phase in the hold frame is adjusted to the target duration, so that the duration of the non-luminous phase in the hold frame is greater than the duration of the non-luminous phase in the refresh frame, thereby making the brightness of the display panel in the refresh frame the same or similar to the brightness of the display panel in the hold frame, thereby improving the flickering phenomenon.

[0109] In this way, the embodiment of the present application accurately calculates the duration that needs to be adjusted for the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and adjusts the holding frame based on the duration, thereby ensuring to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, thereby greatly improving the flicker phenomenon and enhancing the display effect of the display panel.

[0110] Figure 8 for Figure 7 A schematic diagram of a flow chart of S704 in the method for driving a display panel shown in FIG. Figure 8As shown, in some specific embodiments, optionally, S703, according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels per unit row, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the duration corresponding to the sub-pixels per unit row, the target duration corresponding to the non-luminous phase in the hold frame is determined, specifically including the following steps S801 to S804.

[0111] S801. Calculate a first difference between the brightness of the display panel in a refresh frame and the brightness of the display panel in a hold frame before adjustment.

[0112] S802: Calculate the ratio of the first difference value to the brightness corresponding to the sub-pixels of a unit row number, and obtain an adjustment value of the number of rows of sub-pixels corresponding to the non-light-emitting stage in the frame.

[0113] S803 . Determine the target number of sub-pixel rows corresponding to the non-luminous phase in the hold frame according to the adjustment value and the number of sub-pixel rows corresponding to the non-luminous phase in the refresh frame.

[0114] Among them, the specific process of S801 to S803 is the same as the specific process of S601 to S603 mentioned above. Please refer to the above description and will not be repeated here.

[0115] S804: Determine the target duration corresponding to the non-light-emitting phase in the frame according to the target number of rows and the duration corresponding to the sub-pixels per unit number of rows.

[0116] In S804, the product of the target number of rows and the duration corresponding to the sub-pixels per row may be calculated to obtain the target duration corresponding to the non-luminous phase in the retention frame, that is, the duration corresponding to the sub-pixels per target number of rows.

[0117] In this way, the embodiment of the present application accurately calculates the adjustment value of the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame based on the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame before adjustment, and accurately determines the target number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame based on the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame. According to the target number of rows and the duration corresponding to the sub-pixels per unit row, the target duration corresponding to the non-luminous stage in the holding frame is accurately determined. After adjusting the holding frame with the target duration, it can be ensured to a large extent that the brightness of the display panel in the holding frame after adjustment is the same as the brightness of the display panel in the refresh frame, which greatly improves the flicker phenomenon and enhances the display effect of the display panel.

[0118] In some specific embodiments, optionally, the target duration corresponding to the non-light-emitting phase in the frame is determined according to the following expression (3):

[0119]

[0120] Among them, Ti represents the target duration, Hi represents the target number of rows, Δt represents the duration corresponding to the sub-pixels per unit row, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixels per unit row, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0121] Fig. 9 FIG. 1 is another schematic diagram of a brightness curve of a display panel. Fig. 9 As shown, a picture refresh cycle of the display panel includes a refresh frame and N hold frames, where N ≥ 2 and is an integer. Fig. 9 In the example shown, N may be equal to 3. The inventors of the present application have found through research that the brightness of the display panel at the last hold frame in the j-1th picture refresh cycle is significantly different from the brightness of the display panel at the refresh frame in the jth picture refresh cycle, that is, the brightness jump is more serious when switching from the j-1th picture refresh cycle to the jth picture refresh cycle, where j is a positive integer.

[0122] In view of this, according to some embodiments of the present application, optionally, S101, adjusting the duration of the non-luminous phase in the hold frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, may specifically include the following steps:

[0123] Adjust the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the j-th picture refresh cycle, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the j-th picture refresh cycle.

[0124] For example, taking N=3 as an example, the duration of the non-luminous phase of the third holding frame in the previous picture refresh cycle can be adjusted to be greater than the duration of the non-luminous phase of the refresh frame in the current picture refresh cycle. And / or, the number of sub-pixel rows corresponding to the non-luminous phase of the third holding frame in the previous picture refresh cycle is adjusted to be greater than the number of sub-pixel rows corresponding to the non-luminous phase of the refresh frame in the current picture refresh cycle.

[0125] In this way, by adjusting the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the j-th picture refresh cycle, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the j-th picture refresh cycle, the brightness of the display panel at the last holding frame in the j-1th picture refresh cycle can be made the same or similar to the brightness of the display panel at the refresh frame in the j-1th picture refresh cycle, thereby effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0126] Continue to see Fig. 9 The inventors of the present application have discovered through research that when the duration of the non-luminous phase in N hold frames in the same picture refresh cycle and / or the corresponding number of sub-pixel rows are equal to the duration of the non-luminous phase in the refresh frame and / or the corresponding number of sub-pixel rows, the brightness corresponding to each of the N hold frames in the same picture refresh cycle is higher than the brightness corresponding to the refresh frame.

[0127] In view of this, according to other embodiments of the present application, optionally, S101, adjusting the duration of the non-luminous phase in the hold frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, may specifically include the following steps:

[0128] Adjust the duration of the non-luminous phase in the N hold frames within the same picture refresh cycle to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the N hold frames within the same picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0129] For example, taking N=3 as an example, the three hold frames (such as Fig. 9 The duration of the non-luminous phase in the holding frame h21, the holding frame h22 and the holding frame h23 shown in FIG. 1 is greater than the duration of the non-luminous phase in the refresh frame h1. And / or, adjust the three holding frames (such as Fig. 9 The number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame h21, the holding frame h22 and the holding frame h23 shown are all greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame h1.

[0130] In this way, by adjusting the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in the N holding frames in the same picture refresh cycle to be greater than the duration of the non-luminous phase and / or the corresponding number of sub-pixel rows in the refresh frame, the brightness corresponding to each of the N holding frames in the same picture refresh cycle can be made the same or similar to the brightness corresponding to the refresh frame, thereby effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0131] Continue to see Fig. 9 The inventors of this application have found through research that there are differences in the brightness of the display panel when holding different frames. For example, the brightness of the display panel when holding frame h23 is greater than the brightness of the display panel when holding frame h22, and the brightness of the display panel when holding frame h21 is greater than the brightness of the display panel when refreshing frame h1.

[0132] In view of this, according to other embodiments of the present application, optionally, in the same picture refresh cycle, the i-th hold frame is between the refresh frame and the i+1-th hold frame, and i is a positive integer. For example, the hold frame h21 is between the refresh frame and the hold frame h22, and the hold frame h22 is between the refresh frame and the hold frame h23. The duration of the non-luminous phase in the i+1-th hold frame may be greater than or equal to the duration of the non-luminous phase in the i-th hold frame. And / or, the number of rows of sub-pixels corresponding to the non-luminous phase in the i+1-th hold frame may be greater than or equal to the number of rows of sub-pixels corresponding to the non-luminous phase in the i-th hold frame, thereby improving the brightness difference between the brightness of different hold frames and further improving the flicker problem.

[0133] For example, taking N=3 as an example, in some examples, the duration of the non-luminous phase in the holding frame h23>the duration of the non-luminous phase in the holding frame h22≥the duration of the non-luminous phase in the holding frame h21≥the duration of the non-luminous phase in the refresh frame h1. And / or, the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame h23>the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame h22≥the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame h21≥the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame h1.

[0134] Fig. 9 The dotted lines in FIG. 1 represent the brightness of the display panel at each holding frame after adjustment. Fig. 9 As shown, after the above adjustment, the brightness of the display panel when maintaining frame h21 after adjustment, the brightness of the display panel when maintaining frame h22 after adjustment, and the brightness of the display panel when maintaining frame h23 after adjustment are all the same or similar to the brightness of the display panel when refreshing frame h1, thereby improving the flicker problem.

[0135] It should be noted that each holding frame (such as Fig. 9The holding frame h21, holding frame h22 and holding frame h23 shown in the figure can all refer to the above expressions (1), (2) and (3) to calculate the target number of sub-pixels corresponding to the non-luminous phase in the holding frame and / or the target duration corresponding to the non-luminous phase in the holding frame.

[0136] For example, the target number of sub-pixel rows corresponding to the non-light-emitting phase in the frame h21 can be calculated according to the following expression:

[0137]

[0138] Among them, H2 represents the target number of sub-pixels corresponding to the non-luminous stage in the holding frame h21, L2 represents the brightness of the display panel when holding the frame h21 before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixels per unit row number, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0139] For example, the target number of sub-pixels corresponding to the non-light-emitting phase in the holding frame h22 can be calculated according to the following expression:

[0140]

[0141] Among them, H3 represents the target number of sub-pixels corresponding to the non-luminous stage in the holding frame h22, and L3 represents the brightness of the display panel when holding the frame h22 before adjustment.

[0142] For example, the target number of sub-pixels corresponding to the non-light-emitting phase in the holding frame h23 can be calculated according to the following expression:

[0143]

[0144] Among them, H4 represents the target number of sub-pixels corresponding to the non-luminous stage in the holding frame h23, and L4 represents the brightness of the display panel when holding the frame h23 before adjustment.

[0145] Continue to see Figure 2 and Figure 3 The display panel includes a light-emitting element D, and the light-emitting element D emits light under the control of the light-emitting control signal output by the light-emitting control signal line EM. In the non-light-emitting stage, the light-emitting control signal output by the light-emitting control signal line EM may be a cut-off level (such as a high level), and the light-emitting element D does not emit light. In the light-emitting stage, the light-emitting control signal output by the light-emitting control signal line EM may be a turn-on level (such as a low level), and the light-emitting element D emits light.

[0146] Accordingly, S101, adjusting the duration of the non-luminous phase in the hold frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, may specifically include the following steps:

[0147] The duration of the light emitting control signal in the maintenance frame being at the cut-off level is adjusted to be greater than the duration of the light emitting control signal in the refresh frame being at the cut-off level, and / or the number of rows of sub-pixels corresponding to when the light emitting control signal in the maintenance frame is at the cut-off level is adjusted to be greater than the number of rows of sub-pixels corresponding to when the light emitting control signal in the refresh frame is at the cut-off level.

[0148] For example, by adjusting the duration of the light-emitting control signal in the maintenance frame being at a low level to be greater than the duration of the light-emitting control signal in the refresh frame being at a low level, the duration of the non-light-emitting phase in the maintenance frame can be made greater than the duration of the non-light-emitting phase in the refresh frame.

[0149] By adjusting the number of rows of sub-pixels corresponding to the low level of the light-emitting control signal in the maintaining frame to be greater than the number of rows of sub-pixels corresponding to the low level of the light-emitting control signal in the refreshing frame, the number of rows of sub-pixels corresponding to the non-light-emitting stage in the maintaining frame can be made greater than the number of rows of sub-pixels corresponding to the non-light-emitting stage in the refreshing frame.

[0150] Based on the display panel driving method provided in the above embodiment, accordingly, the embodiment of the present application further provides a display panel driving device. Please refer to the following embodiment.

[0151] The picture refresh cycle of the display panel may include a refresh frame and a hold frame, and both the refresh frame and the hold frame may include a non-luminous phase and a luminous phase.

[0152] Fig.10 A schematic diagram of a structure of a driving device for a display panel provided in an embodiment of the present application. Fig.10 As shown, the driving device 100 of the display panel provided in the embodiment of the present application may include an adjustment module 101, which is used to adjust the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame when the display panel is in the target display mode; and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, wherein the refresh rate corresponding to the target display mode is less than the first preset threshold value.

[0153] In the driving device of the display panel of the embodiment of the present application, the adjustment module 101 adjusts the duration of the non-luminous stage in the holding frame to be greater than the duration of the non-luminous stage in the refresh frame, and / or adjusts the number of rows of sub-pixels corresponding to the non-luminous stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame when the display panel is in the target display mode, thereby reducing the difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the holding frame, so that the brightness of the display panel in the refresh frame is the same as or similar to the brightness of the display panel in the holding frame, effectively improving the flicker phenomenon and enhancing the display effect of the display panel.

[0154] In some embodiments, the driving device 100 of the display panel may further include a first determination module, the first determination module is used to obtain the total number of rows of sub-pixels in the display panel, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment; according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, and the brightness of the display panel in the refresh frame, determine the brightness corresponding to the sub-pixels per unit row; according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels per unit row, and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame, determine the target number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame. The adjustment module 101 is specifically used to adjust the number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame to the target number of rows.

[0155] In some embodiments, the first determination module is specifically used to calculate a first difference between the brightness of the display panel in a refresh frame and the brightness of the display panel in a hold frame before adjustment; calculate the ratio of the first difference to the brightness corresponding to a unit row number of sub-pixels, and obtain an adjustment value for the number of rows of sub-pixels corresponding to a non-luminous stage in the hold frame; determine a target number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame based on the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0156] In some embodiments, the first determination module is specifically used to determine the target number of rows of sub-pixels corresponding to the non-light-emitting phase in the retention frame according to the following expression:

[0157]

[0158] Among them, Hi represents the target number of rows, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixel per unit row number, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0159] In some embodiments, the driving device 100 of the display panel may further include a second determination module, which is used to obtain the total number of rows of sub-pixels in the display panel, the duration of the non-luminous phase in the refresh frame, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment; determine the brightness corresponding to the sub-pixels per row according to the total number of rows, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the brightness of the display panel in the refresh frame; determine the duration corresponding to the sub-pixels per row according to the duration of the non-luminous phase in the refresh frame and the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame; determine the target duration corresponding to the non-luminous phase in the hold frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels per row, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, and the duration corresponding to the sub-pixels per row. The adjustment module 101 is specifically used to adjust the duration of the non-luminous phase in the hold frame to the target duration.

[0160] In some embodiments, the second determination module is specifically used to calculate a first difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment; calculate the ratio of the first difference and the brightness corresponding to the sub-pixels per unit row, and obtain an adjustment value for the number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame; determine a target number of rows of sub-pixels corresponding to the non-luminous stage in the hold frame based on the adjustment value and the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame; determine a target duration corresponding to the non-luminous stage in the hold frame based on the target number of rows and the duration corresponding to the sub-pixels per unit row.

[0161] In some embodiments, the second determination module is specifically used to determine the target duration corresponding to the non-light-emitting phase in the retention frame according to the following expression:

[0162]

[0163] Among them, Ti represents the target duration, Hi represents the target number of rows, Δt represents the duration corresponding to the sub-pixels per unit row, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixels per unit row, and H1 represents the number of rows of sub-pixels corresponding to the non-luminous stage in the refresh frame.

[0164] In some embodiments, a picture refresh cycle of the display panel includes a refresh frame and N holding frames, where N≥2 and is an integer. The adjustment module 101 is specifically used to: adjust the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the jth picture refresh cycle, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the jth picture refresh cycle.

[0165] In some embodiments, a picture refresh cycle of the display panel includes a refresh frame and N holding frames, where N ≥ 2 and is an integer. The adjustment module 101 is specifically used to: adjust the duration of the non-luminous phase in the N holding frames in the same picture refresh cycle to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the N holding frames in the same picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

[0166] In some embodiments, in the same screen refresh cycle, the i-th hold frame is between the refresh frame and the i+1-th hold frame, where i is a positive integer; the duration of the non-luminous phase in the i+1-th hold frame is greater than or equal to the duration of the non-luminous phase in the i-th hold frame, or the number of rows of sub-pixels corresponding to the non-luminous phase in the i+1-th hold frame is greater than or equal to the number of rows of sub-pixels corresponding to the non-luminous phase in the i-th hold frame.

[0167] In some embodiments, the display panel includes a light-emitting element, which emits light under the control of a light-emitting control signal. In a non-light-emitting stage, the level of the light-emitting control signal is a cut-off level; in a light-emitting stage, the level of the light-emitting control signal is a conduction level. The adjustment module 101 is specifically used to: adjust the duration of the light-emitting control signal in the hold frame to be at the cut-off level to be greater than the duration of the light-emitting control signal in the refresh frame to be at the cut-off level, and / or adjust the number of rows of sub-pixels corresponding to the light-emitting control signal in the hold frame being at the cut-off level to be greater than the number of rows of sub-pixels corresponding to the light-emitting control signal in the refresh frame being at the cut-off level.

[0168] Fig.10 Each module / unit in the device shown has the function of implementing each step in the display panel driving method provided by the above method embodiment and can achieve its corresponding technical effect, which will not be repeated here for the sake of brevity.

[0169] Based on the display panel driving method provided in the above embodiment, the present application also provides a specific implementation of the electronic device. Please refer to the following embodiment.

[0170] Fig.11A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0171] The electronic device may include a processor 1101 and a memory 1102 storing computer program instructions.

[0172] Specifically, the processor 1101 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0173] The memory 1102 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 1102 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In one example, the memory 1102 may include a removable or non-removable (or fixed) medium, or the memory 1102 is a non-volatile solid-state memory. The memory 1102 may be inside or outside the integrated gateway disaster recovery device.

[0174] In one example, the memory 1102 may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0175] The memory 1102 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present application.

[0176] The processor 1101 implements the method / steps in the above method embodiment by reading and executing the computer program instructions stored in the memory 1102, and achieves the corresponding technical effects achieved by the above method embodiment executing its method / steps, which will not be repeated here for the sake of brevity.

[0177] In one example, the electronic device may further include a communication interface 1103 and a bus 1110. Fig.11 As shown, the processor 1101, the memory 1102, and the communication interface 1103 are connected via a bus 1110 and communicate with each other.

[0178] The communication interface 1103 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0179] Bus 1110 includes hardware, software or both, and the parts of electronic equipment are coupled to each other.For example, but not limitation, bus may include accelerated graphics port (Accelerated Graphics Port, AGP) or other graphics bus, enhanced industry standard architecture (Extended Industry Standard Architecture, EISA) bus, front side bus (Front Side Bus, FSB), hypertransmission (Hyper Transport, HT) interconnection, industry standard architecture (IndustryStandard Architecture, ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 1110 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0180] In addition, in combination with the driving method of the display panel in the above-mentioned embodiment, the embodiment of the present application may provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the driving methods of the display panel in the above-mentioned embodiment is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as electronic circuits, semiconductor memory devices, ROM, random access memory, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, and hard disks.

[0181] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0182] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), appropriate firmware, plug-in, function card, etc. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or communication link by a data signal carried in a carrier. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (Radio Frequency, RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0183] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0184] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0185] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A method for driving a display panel, characterized in that: The picture refresh cycle of the display panel includes a refresh frame and a hold frame, and the refresh frame and the hold frame both include a non-luminous phase and a luminous phase, and the driving method includes: Acquire the total number of rows of sub-pixels in the display panel, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment; Determine the brightness corresponding to the sub-pixels of a unit row number according to the total number of rows, the number of rows of the sub-pixels corresponding to the non-light-emitting stage in the refresh frame, and the brightness of the display panel in the refresh frame; Determine a target number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels of the unit row number, and the number of rows of the sub-pixels corresponding to the non-luminous phase in the refresh frame; When the display panel is in a target display mode, adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, wherein the refresh rate corresponding to the target display mode is less than a first preset threshold; The adjusting the number of rows of sub-pixels corresponding to the non-light-emitting phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-light-emitting phase in the refresh frame specifically includes: The number of rows of sub-pixels corresponding to the non-light-emitting phase in the holding frame is adjusted to the target number of rows.

2. The driving method according to claim 1, characterized in that: The determining, according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels of the unit row number, and the number of rows of the sub-pixels corresponding to the non-luminous stage in the refresh frame, the target number of rows of the sub-pixels corresponding to the non-luminous stage in the hold frame specifically includes: Calculating a first difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment; Calculating a ratio of the first difference to the brightness corresponding to the number of sub-pixels per unit row, and obtaining an adjustment value of the number of rows of the sub-pixels corresponding to the non-light-emitting stage in the holding frame; The target number of sub-pixel rows corresponding to the non-luminous phase in the hold frame is determined according to the adjustment value and the number of sub-pixel rows corresponding to the non-luminous phase in the refresh frame.

3. The driving method according to claim 2, characterized in that: The target number of sub-pixel rows corresponding to the non-light-emitting phase in the holding frame is determined according to the following expression: Among them, Hi represents the target number of rows, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixel per unit row number, and H1 represents the number of rows of the sub-pixel corresponding to the non-luminous stage in the refresh frame.

4. The driving method according to claim 1, characterized in that: Before adjusting the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame, the driving method further includes: Obtaining the total number of rows of sub-pixels in the display panel, the duration of the non-luminous phase in the refresh frame, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment; Determine the brightness corresponding to the sub-pixels of a unit row number according to the total number of rows, the number of rows of the sub-pixels corresponding to the non-light-emitting stage in the refresh frame, and the brightness of the display panel in the refresh frame; Determine the duration corresponding to the sub-pixels per row according to the duration of the non-luminous phase in the refresh frame and the number of rows of the sub-pixels corresponding to the non-luminous phase in the refresh frame; Determine a target duration corresponding to the non-luminous phase in the holding frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels of the unit row number, the number of rows of the sub-pixels corresponding to the non-luminous phase in the refresh frame, and the duration corresponding to the sub-pixels of the unit row number; The adjusting the duration of the non-light-emitting phase in the holding frame to be greater than the duration of the non-light-emitting phase in the refresh frame specifically includes: The duration of the non-light-emitting phase in the holding frame is adjusted to the target duration.

5. The driving method according to claim 4, characterized in that: Determining the target duration corresponding to the non-luminous phase in the holding frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the holding frame before adjustment, the brightness corresponding to the sub-pixels of the unit row number, the number of rows of the sub-pixels corresponding to the non-luminous phase in the refresh frame, and the duration corresponding to the sub-pixels of the unit row number specifically includes: Calculating a first difference between the brightness of the display panel in the refresh frame and the brightness of the display panel in the hold frame before adjustment; Calculating a ratio of the first difference to the brightness corresponding to the sub-pixels of the unit row number, and obtaining an adjustment value of the number of rows of the sub-pixels corresponding to the non-light-emitting stage in the holding frame; Determining a target number of sub-pixel rows corresponding to the non-light-emitting phase in the hold frame according to the adjustment value and the number of sub-pixel rows corresponding to the non-light-emitting phase in the refresh frame; The target duration corresponding to the non-light-emitting phase in the holding frame is determined according to the target number of rows and the duration corresponding to the sub-pixels per unit number of rows.

6. The driving method according to claim 5, characterized in that: The target duration corresponding to the non-light-emitting phase in the holding frame is determined according to the following expression: Among them, Ti represents the target duration, Hi represents the target number of rows, Δt represents the duration corresponding to the sub-pixel per unit row, Li represents the brightness of the display panel in the hold frame before adjustment, L1 represents the brightness of the display panel in the refresh frame, c represents the brightness corresponding to the sub-pixel per unit row, and H1 represents the number of rows of the sub-pixel corresponding to the non-luminous stage in the refresh frame.

7. The driving method according to claim 1, characterized in that: One of the picture refresh cycles of the display panel includes one refresh frame and N hold frames, where N is greater than or equal to 2 and is an integer; The adjusting the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, specifically includes: Adjust the duration of the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the duration of the non-luminous phase of the refresh frame in the j-th picture refresh cycle, and / or adjust the number of rows of sub-pixels corresponding to the non-luminous phase of the Nth holding frame in the j-1th picture refresh cycle to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase of the refresh frame in the j-th picture refresh cycle.

8. The driving method according to claim 1, characterized in that: One of the picture refresh cycles of the display panel includes one refresh frame and N hold frames, where N is greater than or equal to 2 and is an integer; The adjusting the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, specifically includes: The duration of the non-luminous phase in the N holding frames within the same picture refresh cycle is adjusted to be greater than the duration of the non-luminous phase in the refresh frame, and / or the number of rows of sub-pixels corresponding to the non-luminous phase in the N holding frames within the same picture refresh cycle is adjusted to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame.

9. The driving method according to claim 8, characterized in that: In the same picture refresh cycle, the i-th holding frame is between the refresh frame and the i+1-th holding frame, where i is a positive integer; the duration of the non-luminous phase in the i+1-th holding frame is greater than or equal to the duration of the non-luminous phase in the i-th holding frame, and / or the number of rows of sub-pixels corresponding to the non-luminous phase in the i+1-th holding frame is greater than or equal to the number of rows of sub-pixels corresponding to the non-luminous phase in the i-th holding frame.

10. The driving method according to claim 1, characterized in that: The display panel comprises a light emitting element, the light emitting element emits light under the control of a light emitting control signal, and in the non-light emitting stage, the level of the light emitting control signal is a cut-off level; In the light-emitting stage, the level of the light-emitting control signal is an on-level; The adjusting the duration of the non-luminous phase in the holding frame to be greater than the duration of the non-luminous phase in the refresh frame, and / or adjusting the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, specifically includes: The duration of the light emitting control signal in the holding frame being at the cut-off level is adjusted to be greater than the duration of the light emitting control signal in the refresh frame being at the cut-off level, and / or the number of rows of sub-pixels corresponding to the light emitting control signal in the holding frame being at the cut-off level is adjusted to be greater than the number of rows of sub-pixels corresponding to the light emitting control signal in the refresh frame being at the cut-off level.

11. A driving device for a display panel, characterized in that: The picture refresh cycle of the display panel includes a refresh frame and a hold frame, and the refresh frame and the hold frame both include a non-light-emitting phase and a light-emitting phase, and the driving device includes: an adjusting module, configured to adjust the number of rows of sub-pixels corresponding to the non-luminous phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame when the display panel is in a target display mode, wherein a refresh rate corresponding to the target display mode is less than a first preset threshold; Before adjusting the number of rows of sub-pixels corresponding to the non-light-emitting stage in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-light-emitting stage in the refresh frame, the method further includes: Acquire the total number of rows of sub-pixels in the display panel, the number of rows of sub-pixels corresponding to the non-luminous phase in the refresh frame, the brightness of the display panel in the refresh frame, and the brightness of the display panel in the hold frame before adjustment; Determine the brightness corresponding to the sub-pixels of a unit row number according to the total number of rows, the number of rows of the sub-pixels corresponding to the non-light-emitting stage in the refresh frame, and the brightness of the display panel in the refresh frame; Determine a target number of rows of sub-pixels corresponding to the non-luminous phase in the hold frame according to the brightness of the display panel in the refresh frame, the brightness of the display panel in the hold frame before adjustment, the brightness corresponding to the sub-pixels of the unit row number, and the number of rows of the sub-pixels corresponding to the non-luminous phase in the refresh frame; The adjusting the number of rows of sub-pixels corresponding to the non-light-emitting phase in the holding frame to be greater than the number of rows of sub-pixels corresponding to the non-light-emitting phase in the refresh frame specifically includes: The number of rows of sub-pixels corresponding to the non-light-emitting phase in the holding frame is adjusted to the target number of rows.

12. An electronic device, characterized in that: The electronic device comprises: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the method for driving a display panel according to any one of claims 1 to 10 when executed by the processor.

Images