A driving method of a display panel, a display panel, and a display device

Abstract

The embodiment of the application provides a display panel driving method, a display panel and a display device. The display panel comprises S subframes in a frame, and the working process of a pixel circuit in a subframe comprises a data writing stage and a light emitting stage. The display panel driving method comprises: when the display panel displays a frame in a first display mode, the duration of N light emitting stages in the light emitting stages comprised by the S subframes is different; when the display panel displays a frame in a second display mode, the duration of M light emitting stages in the light emitting stages comprised by the S subframes is different; N>M, and N and M are integers greater than or equal to 0. The application is beneficial to more flexible adjustment of the light emitting time of different subframes, and is beneficial to more accurate display brightness of a frame. The duration of the light emitting stage of multiple subframes is the same, the light emitting brightness difference between the multiple subframes is reduced, and the flicker effect caused by low frequency display is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a driving method of display panel, display panel and display device. BACKGROUND

[0002] In the prior art, the brightness can be controlled by simultaneously adjusting the amplitude and duration of the light-emitting driving current transmitted to the light-emitting device through a PAM-PWM (Pulse amplitude modulation-Pulse width modulation) hybrid driving method. In a multi-subframe display mode, the brightness of each of the plurality of subframes is controlled by the PAM-PWM method, and the light-emitting brightness between the plurality of subframes is different. In the multi-subframe mode, the light-emitting brightness of the plurality of subframes can be superimposed to reach the target brightness of a frame of picture. When the frame refresh frequency of the display panel is high, the brightness change frequency between the plurality of subframes is also fast, and the human eye is not easy to perceive the brightness change, so the flicker effect produced during high-frequency display is small. However, when the frame refresh frequency of the display panel is low, the brightness change frequency between the plurality of subframes is also slow, and the human eye is easy to perceive the brightness change between the subframes, so the flicker effect produced during low-frequency display is large. SUMMARY

[0003] Therefore, the present application provides a driving method of display panel, display panel and display device to solve the above problems.

[0004] In a first aspect, the present application provides a driving method of display panel, the display panel comprising at least one light-emitting device and a pixel circuit, the pixel circuit driving the light-emitting device to emit light.

[0005] The display panel comprises S subframes in a frame of picture, and the working process of the pixel circuit in the subframes comprises:

[0006] In a data writing stage, the pixel circuit receives a data voltage;

[0007] In a light-emitting stage, the pixel circuit receives a valid light-emitting control signal, generates a light-emitting driving current, and drives the light-emitting device to emit light by the light-emitting driving current;

[0008] The display panel comprises a first display mode and a second display mode, the frame refresh frequency of the display panel in the first display mode is F1, the frame refresh frequency of the display panel in the second display mode is F2, and F1>F2;

[0009] The driving method of the display panel comprises:

[0010] When the display panel displays a frame of picture in the first display mode, the duration of N light-emitting stages in the light-emitting stages comprised by the S subframes is different;

[0011] The display panel displays a frame of picture in the second display mode, and durations of M light emitting stages included in the S sub-frames are different.

[0012] Wherein, N>M, and N and M are integers greater than or equal to 0.

[0013] In a second aspect, the present application provides a display panel, which is driven by the driving method provided in the first aspect.

[0014] In a third aspect, the present application provides a display device, which comprises the display panel provided in the second aspect.

[0015] In the embodiments of the present application, the display panel is set to have different durations of light emitting stages between part or S sub-frames in a frame of picture in the first display mode, which is beneficial to more flexible adjustment of light emitting time of different sub-frames when the display panel displays a frame of picture, so as to more flexibly combine light emitting brightness of each sub-frame to obtain a more efficient light emitting mode, and is beneficial to more accurate display brightness of the display panel in a frame of picture through brightness adjustment between multiple sub-frames, thereby improving the display effect of the display panel.

[0016] The display panel is set to have different durations of light emitting stages between part or 0 sub-frames in a frame of picture in the second display mode, which is beneficial to the same durations of light emitting stages between multiple sub-frames, provides a condition for the same light emitting brightness between multiple sub-frames, is beneficial to reducing the light emitting brightness difference between multiple sub-frames, reduces the flicker influence caused by low light emitting brightness change frequency and obvious light emitting brightness change between sub-frames in low frequency display, and is beneficial to improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A schematic diagram of a display panel provided in the embodiments of the present application;

[0019] Figure 2 A timing diagram of a display panel provided in the embodiments of the present application;

[0020] Figure 3 A timing diagram of a display panel in the first display mode provided in the embodiments of the present application;

[0021] Figure 4A timing diagram of a display panel in a second display mode is provided for an embodiment of the present application;

[0022] Figure 5 A working schematic diagram of a display panel is provided for an embodiment of the present application;

[0023] Figure 6 A luminous intensity-luminous duration schematic diagram of a display panel in a first display mode is provided for an embodiment of the present application;

[0024] Figure 7 A luminous intensity-luminous duration schematic diagram of a display panel in a second display mode is provided for an embodiment of the present application;

[0025] Figure 8 A timing diagram of a display panel in a first display mode is provided for another embodiment of the present application;

[0026] Figure 9 A timing diagram of a display panel in a second display mode is provided for another embodiment of the present application;

[0027] Figure 10 A timing diagram of a display panel in a second display mode is provided for another embodiment of the present application;

[0028] Figure 11 A timing diagram of a display panel in a second display mode is provided for another embodiment of the present application;

[0029] Figure 12 A working schematic diagram of a display panel is provided for another embodiment of the present application;

[0030] Figure 13 A timing diagram of a display panel in a second display mode is provided for another embodiment of the present application;

[0031] Figure 14 A timing diagram of a display panel in a third display mode is provided for an embodiment of the present application;

[0032] Figure 15 A timing diagram of a display panel in a third display mode is provided for another embodiment of the present application;

[0033] Figure 16 A luminous intensity-luminous duration schematic diagram of a display panel in a third display mode is provided for an embodiment of the present application;

[0034] Figure 17 A timing diagram of a display panel in a third display mode is provided for another embodiment of the present application;

[0035] Figure 18This is a schematic diagram illustrating the operation of another display panel provided in an embodiment of this application;

[0036] Figure 19 A schematic diagram of a pixel circuit provided in an embodiment of this application.

[0037] Figure 20 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0038] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0040] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "generally", "largely" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0043] It should be understood that although the terms "first," "second," etc., may be used to describe display modes, subframes, etc., in the embodiments of this application, these should not be limited to these terms. These terms are only used to distinguish display modes, subframes, etc., from each other. For example, without departing from the scope of the embodiments of this application, the first display mode may also be referred to as the second display mode, and similarly, the second display mode may also be referred to as the first display mode. Through careful and in-depth research, the applicant of this application has provided a solution to the problems existing in the prior art.

[0044] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of this application.Figure 2 A timing diagram of a display panel provided by an embodiment of the present application, Figure 3 A timing diagram of a display panel provided by an embodiment of the present application in a first display mode, Figure 4 A timing diagram of a display panel provided by an embodiment of the present application in a second display mode, Figure 5 A working schematic diagram of a display panel provided by an embodiment of the present application.

[0045] An embodiment of the present application provides a driving method of a display panel, as shown in Figure 1 The display panel 100 includes at least one light emitting device 10 and a pixel circuit 20, and the pixel circuit 20 drives the light emitting device 10 to emit light.

[0046] An embodiment of the present application is described by using a display panel to perform multi-subframe display, the display panel includes multiple subframes in a frame working process, and the display brightness of a frame picture of the display panel is formed by the total brightness of the multiple subframes. The light emitting brightness of the light emitting device in one subframe is determined by the amplitude and duration of the light emitting driving current received by the light emitting device, which is also called PWM-PAM (Pulse amplitude modulation-Pulse width modulation) driving.

[0047] In the related art, the display panel in a frame working process usually sets the light emitting brightness of multiple subframes to be different, that is, the light emitting time of the light emitting device between the multiple subframes is different or the amplitude of the light emitting driving current received by the light emitting device between the multiple subframes is different. When the display panel performs high frequency display, the light emitting brightness change frequency between the multiple subframes in a frame is also high, and the flicker effect caused by such high frequency display is small and not easy to be perceived by the human eye. However, when the display panel performs low frequency display, the light emitting brightness change frequency between the multiple subframes in a frame is also low, and the flicker effect caused by such low frequency display is large and easy to be perceived by the human eye, which has a large influence on the display effect.

[0048] In combination with Figure 2 As shown in the figure, the present inventors propose that the display panel 100 includes S subframes T1 in a frame picture, and the working process of the pixel circuit 20 in the subframe T1 includes a data writing stage T11, and the pixel circuit 20 receives a data voltage Vdata after receiving a data writing signal V1 in the data writing stage T11. Alternatively, the data writing signal V1 is a low level signal when it is an effective signal, and the pixel circuit 20 enters the data writing stage T11 when the data writing signal V1 is low.

[0049] The working process of the pixel circuit 20 in the subframe T1 further includes a light emitting stage T12. In the light emitting stage T12, the pixel circuit 20 receives an effective light emitting control signal EMIT, generates a light emitting driving current, and outputs the light emitting driving current to the light emitting device 10, and the light emitting driving current drives the light emitting device 10 to emit light. Alternatively, the light emitting control signal EMIT is an effective signal when the light emitting control signal EMIT is a low-level signal, and the pixel circuit 20 enters the light emitting stage T12 when the light emitting control signal EMIT is low. Alternatively, in one subframe T1, the data writing stage T11 is performed before the light emitting stage T12. The amplitude of the light emitting driving current generated by the pixel circuit 20 in the light emitting stage T12 is related to the received data voltage Vdata. Alternatively, the light emitting driving current generated by the pixel circuit 20 is inversely related to the data voltage Vdata, that is, the smaller the data voltage Vdata received by the pixel circuit 20, the greater the light emitting driving current generated.

[0050] The display panel 100 includes a first display mode M1 and a second display mode M2. The frame refresh frequency of the display panel 100 in the first display mode M1 is F1, and the frame refresh frequency of the display panel 100 in the second display mode M2 is F2, F1>F2. Alternatively, the display panel 100 is high-frequency display in the first display mode M1, and the display panel 100 is low-frequency display in the second display mode M2.

[0051] Exemplarily, Figure 5 The display panel 100 respectively in the first display mode M1 and the second display mode M2 in each subframe T1 of the light emitting stage T12, t1-ts respectively represent the first subframe to the Sth subframe, and the shaded part represents the duration of the light emitting stage T12 in one subframe T1. Alternatively, S=4.

[0052] In combination with Figures 3-5 As shown in the figure, the driving method of the display panel includes that when the display panel 100 displays a frame of picture in the first display mode M1, the durations of N light emitting stages T12 included in the S subframes T1 are different. Each subframe T1 includes at least one light emitting stage T12. The embodiment of the present application takes each subframe T1 including one light emitting stage T12 as an example for description, and then S light emitting stages T12 are included in the S subframes T1. The S light emitting stages T12 are all from different subframes T1. As known from the PWM-PAM (Pulse amplitude modulation-Pulsewidth modulation) driving method mentioned above: if the durations of N light emitting stages T12 included in the S subframes T1 are different, then there may be a difference in light emitting brightness between N subframes in the S subframes T1.

[0053] It should be noted that in the embodiments of the present application, the number of S sub-frames T1 included in one frame of picture of the display panel 100 in different display modes can not be equal, and S≥1.

[0054] Figure 6 A luminous intensity-luminous duration schematic diagram of a display panel in a first display mode is provided in the embodiments of the present application.

[0055] Optionally, as shown in Figure 3 , N=S is set, and the luminous duration of the luminous phase T12 between the S sub-frames T1 is not the same, in combination with Figure 6 , as shown in Figure 6 , the horizontal axis in the above figure represents the duration length of the luminous phase T12 in each sub-frame T1, and the vertical axis represents the luminous intensity displayed in each sub-frame T1. There can be a case that the luminous intensity between the S sub-frames T1 is not the same, and this display mode is beneficial to more flexibly regulate the luminous intensity of each sub-frame T1 in combination with the display luminance required by the display panel 100 in one frame of picture, and is beneficial to find a luminous intensity combination mode with higher luminous efficiency by flexibly regulating the luminous intensity of each sub-frame T1, and is also beneficial to reduce the deviation from the target luminous intensity by flexibly regulating the luminous intensity of each sub-frame T1, and realize more accurate luminous of the display panel 100 in one frame of picture.

[0056] Since the first display mode M1 is a high-frequency display mode, the flicker effect caused by the change of luminous intensity between the multiple sub-frames T1 is small and not easy to be perceived by the human eye. Of course, in some other embodiments, N<S can be set, and the luminous intensity between some of the S sub-frames T1 is relatively equal or close, which is beneficial to further reduce the influence of flicker and improve the display effect of the display panel 100 in the first display mode M1.

[0057] In combination with Figures 3-5As shown, the driving method of the display panel further includes that, when the display panel 100 displays a frame of picture in the second display mode M2, the time durations of the M light-emitting stages T12 included in the S sub-frames T1 are different. At least one light-emitting stage T12 is included in each sub-frame T1, and the embodiment of the present application takes an example of one light-emitting stage T12 included in each sub-frame T1 for description, so that S light-emitting stages T12 are included in the S sub-frames T1. The S light-emitting stages T12 are all from different sub-frames T1, and it can be known from the PWM-PAM (Pulse amplitude modulation-Pulse width modulation) driving method mentioned above that: if the time durations of the N light-emitting stages T12 included in the S sub-frames T1 are different, then there may be a difference in the light-emitting brightness between the N sub-frames of the S sub-frames T1.

[0058] Figure 7 A light-emitting brightness-light-emitting time duration diagram of a display panel in a second display mode provided by the embodiment of the present application.

[0059] Optionally, as shown in Figure 4 , M=0 is set, indicating that the time durations of the light-emitting stages T12 in the S sub-frames T1 are all the same, in combination with Figure 7 , as shown, Figure 7 , the horizontal axis in the above formula (1) represents the time duration length of the light-emitting stage T12 in each sub-frame T1, and the vertical axis represents the light-emitting brightness size displayed in each sub-frame T1. It is possible that the light-emitting brightnesses between the S sub-frames T1 are all equal or relatively close, which is beneficial to greatly reduce the degree of change of the light-emitting brightness between the multiple sub-frames T1, and further reduce the flicker influence caused by the change of the light-emitting brightness between the multiple sub-frames T1.

[0060] , where N>M, and N and M are both integers greater than or equal to 0. When the display panel 100 works in the first display mode M1 with a higher frame refresh frequency, the number of sub-frames T1 with different time durations of the light-emitting stages T12 should be greater than the number of sub-frames T1 with different time durations of the light-emitting stages T12 when the display panel 100 works in the second display mode M2 with a lower frame refresh frequency. This is beneficial to improve the accuracy of the light-emitting brightness of the display panel 100 in the first display mode M1, and is beneficial to reduce the flicker influence of the display panel in the second display mode M2, and improve the display effect of the display panel 100 in the first display mode M1 and the second display mode M2.

[0061] In the embodiment of the present application, the display panel 100 is configured to have different durations of the light emitting phase T12 between the partial or S subframes T1 in a frame of the first display mode M1, which is beneficial to flexibly adjust the light emitting time of different subframes T1 when the display panel 100 implements the brightness of a frame, so as to more flexibly combine the light emitting brightness of each subframe T1 to obtain a more efficient light emitting mode, and is beneficial to making the display brightness of the display panel 100 in a frame more accurate through the brightness adjustment between the plurality of subframes T1, thereby improving the display effect of the display panel 100.

[0062] When the display panel 100 displays a frame in the second display mode M2, the durations of the light emitting phase T12 between the partial or 0 subframes T1 are different, which is beneficial to making the durations of the light emitting phase T12 between the plurality of subframes T1 the same, providing a condition for the light emitting brightness of the plurality of subframes T1 being the same, reducing the difference in the light emitting brightness between the plurality of subframes T1, reducing the flicker influence caused by the low light emitting brightness change frequency and the obvious change in the light emitting brightness between the subframes T1 when displaying at a low frequency, and is beneficial to improving the display effect of the display panel 100.

[0063] Figure 8 Another timing diagram of a display panel in a first display mode is provided in the embodiment of the present application.

[0064] In one embodiment of the present application, as shown in Figure 8 When the display panel 100 displays a frame, the data voltage Vdata received by the pixel circuit 20 in the data writing phase T11 of the subframe T1 with different durations of the light emitting phase T12 is also different in the S subframes T1. The embodiment of the present application takes the display panel 100 working in the first display mode M1 as an example for description.

[0065] As known from the above, the light emitting brightness in one subframe T1 is related to the amplitude of the light emitting driving current received by the light emitting device 10 and the light emitting duration. Then, when the display panel 100 displays a frame, the data voltage Vdata received by the pixel circuit 20 in the data writing phase T11 of the subframe T1 with different durations of the light emitting phase T12 is also different in the S subframes T1, and the light emitting brightness between the N subframes T1 with different durations of the light emitting phase T12 in the S subframes T1 is also different.

[0066] The frame refresh frequency of the display panel 100 in the first display mode M1 is F1, and taking N=S as an example, continuing to refer to Figure 8As shown in FIG. 6, the durations of the light emitting phases T12 between the S subframes T1 are all different, which means that the luminance of the light emitting phases T12 between the S subframes T1 are all different. When the display panel 100 works in the first display mode M1, the luminance of the light emitting phases T12 between the S subframes T1 in a frame also changes at a frequency of F1.

[0067] In the embodiment of the present application, the frame refresh frequency of the display panel 100 when displaying a frame is the same as the luminance change frequency between the subframes T1. This driving method is suitable for the first display mode M1, the luminance change between the S subframes T1 has less impact on flicker, and is beneficial to more flexible adjustment of the luminance of the light emitting phases T12 between different subframes T1 to obtain the target luminance in a frame.

[0068] Figure 9 FIG. 7 is a timing diagram of another display panel provided by an embodiment of the present application in the second display mode, Figure 10 FIG. 8 is a timing diagram of another display panel provided by an embodiment of the present application in the second display mode.

[0069] In an embodiment of the present application, as shown in FIG. 6, Figure 9 When the display panel 100 displays a frame, the data voltage Vdata received by the pixel circuit 20 in the data writing phase T11 of the S subframes T1 with the same duration of the light emitting phase T12 is also the same. The embodiment of the present application takes the display panel 100 working in the second display mode M2 as an example for description.

[0070] As described above, the luminance in a subframe T1 is related to the amplitude of the light emitting driving current received by the light emitting device 10 and the light emitting duration. Therefore, when the display panel 100 displays a frame, the data voltage Vdata received by the pixel circuit 20 in the data writing phase T11 of the S subframes T1 with the same duration of the light emitting phase T12 is also the same, and the luminance between the S subframes T1 with the same duration of the N light emitting phases T12 is also the same.

[0071] The frame refresh frequency of the display panel 100 in the second display mode M1 is F2. Taking M=0 as an example, continuing to refer to FIG. 7, Figure 9 As shown in FIG. 7, the durations of the light emitting phases T12 between the S subframes T1 are all the same, which means that the luminance of the light emitting phases T12 between the S subframes T1 are all the same. When the display panel 100 works in the second display mode M2, the luminance of the light emitting phases T12 between the S subframes T1 in a frame changes at a frequency of S*F1, which means that the luminance of the light emitting phases T12 between the S subframes T1 in a frame changes at a frequency of S times the frame frequency, and the luminance change frequency between the subframes T1 is improved.

[0072] In addition, as shown in FIG. 8,Figure 10 As shown, when displaying a frame of picture in the display panel 100, the duration of the light-emitting stage T12 of the sub-frames T1 in the S sub-frames T1 is different, and the data voltage Vdata received by the pixel circuit 20 in the data writing stage T12 of the sub-frames T1 is also different. It can be shown that in a frame of picture, the light-emitting brightness of part of the sub-frames T1 in the S sub-frames T1 is the same, and the light-emitting brightness of the remaining part of the sub-frames T1 is different. It is beneficial to accurately display the brightness of a frame of picture by combining the sub-frames T1 with the same light-emitting brightness and the sub-frames T1 with different light-emitting brightness on the basis of reducing the flicker effect; it is beneficial to reduce the light-emitting brightness difference between the plurality of sub-frames T1 to a certain extent, and improve the display effect.

[0073] In the embodiment of the present application, the brightness change frequency between the sub-frames T1 is a multiple of the frame refresh frequency when the display panel 100 displays a frame of picture, and this driving method is suitable for the second display mode M2. When the frame frequency F2 of the display panel 100 is relatively low, by setting the light-emitting brightness change frequency between the S sub-frames T1 as an integer multiple of the frame refresh frequency, it is beneficial to improve the brightness change frequency between the sub-frames, and further reduce the visual effect caused by the low frame refresh frequency, so that the light-emitting brightness change between the sub-frames T1 is not easily perceived. In addition, when the display panel 100 displays a frame of picture, the light-emitting brightness of the sub-frames T1 with the same duration of the light-emitting stage T12 in the S sub-frames T1 is also the same, which is beneficial to further reduce the difference in light-emitting brightness between the sub-frames T1, and further reduce the flicker effect and improve the display effect.

[0074] In an embodiment of the present application, continuing to refer to Figures 3-10 As shown, the S sub-frames T1 include the first sub-frame t1 to the Sth sub-frame ts in sequence, and the duration of the light-emitting stage T12 included in the first sub-frame t1 is less than or equal to the duration of the light-emitting stage T12 included in the second sub-frame t2 to the Sth sub-frame ts.

[0075] In the embodiment of the present application, the duration of the light-emitting stage T12 in the first sub-frame t1 in the S sub-frames T1 is less than or equal to the duration of the light-emitting stage T12 in the remaining sub-frames T1. When the light-emitting time of the sub-frames T1 is short in a frame of picture, the current density of the light-emitting driving current received by the light-emitting device 10 in the sub-frames T1 with short light-emitting duration is large, which is beneficial to provide the light-emitting efficiency of the light-emitting device 10 in the sub-frames T1, and improve the light-emitting performance of the light-emitting device 10. The light-emitting performance of the light-emitting device 10 is activated in the first sub-frame T1 of a frame of picture, which is beneficial to improve the working performance of the light-emitting device 10 in a frame of picture.

[0076] In an embodiment of the present application, continuing to refer to Figures 3-10As shown, the duration of the Sth subframe in the light emitting stage T12 is greater than the duration of the 1st subframe t1 to the (S-1)th subframe ts in the light emitting stage T12.

[0077] In the embodiment of the present application, the duration of the Sth subframe in the light emitting stage T12 is greater than or equal to the duration of the light emitting stage T12 in the remaining subframes T1. In a frame of picture, the sum of the luminance generated by the light emitting stage T12 of each of the plurality of subframes T1 is the target luminance of the frame of picture. When the target luminance of the frame of picture is achieved, for the case of high gray scale display, the duration of the light emitting stage T12 of the last Sth subframe ts can be extended to complete, which is conducive to extending the high luminance by the light emitting stage T12 of the Sth subframe ts, and achieving the high luminance requirement of the frame of picture.

[0078] In one embodiment of the present application, as shown in Figure 4 , Figure 5 , Figure 7 As shown, when the display panel 100 displays a frame of picture in the second display mode M2, the durations of the light emitting stage T12 included in the S subframes T1 are all the same.

[0079] In the embodiment of the present application, when the display panel 100 works in the second display mode M2, the durations of the light emitting stage T12 included in the S subframes T1 are the same, which is conducive to reducing the luminance difference between the S subframes T1 by including the same duration of the light emitting stage T12 in the S subframes T1, so that the luminance variation degree between the S subframes T1 is small, which is conducive to reducing the flicker degree of the display panel 100 in the second display mode M2 and improving the display effect of the display panel 100 in the second display mode M2.

[0080] Figure 11 In another embodiment of the present application, a timing diagram of a display panel in a second display mode is provided, Figure 12 In another embodiment of the present application, a working schematic diagram of a display panel is provided, Figure 13 In another embodiment of the present application, a timing diagram of a display panel in a second display mode is provided.

[0081] In one embodiment of the present application, as shown in Figure 11 As shown, when the display panel 100 displays a frame of picture in the second display mode M2, a plurality of light emitting stages T12 are included in one subframe T1. At this time, in one subframe T1, the pixel circuit 20 performs a plurality of light emitting stages T12, and the light emitting device 10 can perform a plurality of light emissions. In combination with Figure 12As shown, from the perspective of the S subframes T1 as a whole, if a subframe T1 includes multiple light-emitting stages T12, then the number of light-emitting stages T12 included in the S subframes T1 increases, and the frequency of light emission by the light-emitting device 10 increases. This helps to reduce the risk of obvious flickering between subframes T12 when the frame refresh rate of the display panel 100 is low, so that the display panel can maintain a relatively smooth display effect when displaying at a low frame refresh rate.

[0082] Optionally, such as Figure 11 As shown, the total duration of the different light emission stages T1 in different subframes T1 of the pixel circuit 20 is the same.

[0083] Optionally, such as Figure 13 As shown, when displaying a frame in the second display mode M2, a subframe T1 includes x light-emitting stages T12, where x = 2 for example. A data writing stage T11 is performed between each of the x light-emitting stages T12. The duration of the x light-emitting stages T12 in a subframe T1 is the same, and the data voltage Vdata transmitted during the x data writing stages T11 in a subframe T1 is also the same. Thus, when the display panel 100 displays a frame in the second display mode M2, the brightness of the multiple light-emitting stages T12 in different subframes T1 is the same. Since the frame refresh rate of the display panel 100 in the second display mode M1 is F2, when the brightness of the S subframes T1 is the same in the light emission stage, the light emission brightness change frequency of the light emission device 10 in the S subframes T1 is S*F2. Furthermore, when the light emission brightness of the x light emission stages T12 in each of the S subframes T1 is also the same, the light emission brightness change frequency of the light emission device 10 in the S subframes T1 is increased to x*S*F2.

[0084] In this embodiment, when the display panel 100 displays a frame in the second display mode M2, a subframe T1 includes multiple light-emitting stages T12, which helps to increase the light-emitting frequency of the light-emitting device 10. Furthermore, setting the duration of the light-emitting stages T12 to be the same across the S subframes T1 helps to reduce the brightness variation differences between the S subframes T1. Additionally, setting the brightness of the multiple light-emitting stages T12 in each of the S subframes T1 can be the same further helps to increase the brightness variation frequency of the light-emitting device 10 between the subframes T1 in the second display mode M2, further reducing the flickering effect of the display panel 100 when operating at a low refresh rate, and improving the display effect.

[0085] In one embodiment of this application, combined with Figure 3 , Figure 8As shown, the number of S sub-frames T1 in a frame of the display panel 100 under the first display mode M1 and the second display mode M2 is the same. When the display panel 100 displays a frame of picture under the first display mode M1, the number of light-emitting stages T12 included in the S sub-frames T1 is X1. The display panel 100 includes S sub-frames T1 in a frame under the first display mode M1, and at this time, the pixel circuit 20 performs X1 light-emitting stages T12 in the S sub-frames T1.

[0086] In combination Figures 11-13 As shown, when the display panel 100 displays a frame of picture under the second display mode M2, the number of light-emitting stages T12 included in the S sub-frames T1 is Y1. The display panel 100 includes S sub-frames T1 in a frame under the second display mode M2, and at this time, the pixel circuit 20 performs X2 light-emitting stages T12 in the S sub-frames T1.

[0087] In the embodiment of the present application, X1 < Y1 is set, that is, when the display panel 100 performs display work, the number of light-emitting stages T12 performed by the pixel circuit 20 when displaying a frame of picture at low frequency is greater than the number of light-emitting stages T12 performed by the pixel circuit 20 when displaying a frame of picture at high frequency, which is beneficial to improve the frequency of the light-emitting device 10 emitting light per unit time when the display panel 100 displays a frame of picture at low frequency, reduce the flicker influence when the display panel 100 works at low frequency, and improve the visual effect of the human eye watching the display panel 100.

[0088] In one embodiment of the present application, in combination Figure 3 , Figure 8 As shown, the number of S sub-frames T1 in a frame of the display panel 100 under the first display mode M1 and the second display mode M2 is the same. When the display panel 100 displays a frame of picture under the first display mode M1, the number of light-emitting stages T12 included in the S sub-frames T1 is X1. The display panel 100 includes S sub-frames T1 in a frame under the first display mode M1, and at this time, the pixel circuit 20 performs X1 light-emitting stages T12 in the S sub-frames T1.

[0089] In combination Figures 11-13 As shown, when the display panel 100 displays a frame of picture under the second display mode M2, the number of light-emitting stages T12 included in the S sub-frames T1 is Y1. The display panel 100 includes S sub-frames T1 in a frame under the second display mode M2, and at this time, the pixel circuit 20 performs X2 light-emitting stages T12 in the S sub-frames T1.

[0090] Optionally, as shown in Figure 8 X2 < Y2 is set. Since the frame refresh frequency of the display panel 100 under the second display mode M2 is higher than that under the first display mode M1, the light-emitting device 10 has a higher light-emitting-extinguishing switching frequency between sub-frames T1, and thus the flicker influence of the light-emitting brightness change between sub-frames T1 on the visual effect is smaller.

[0091] Optionally, as shown in Figure 13 The display panel 100 includes 3 light-emitting stages T12 in one sub-frame T1 in a frame when working in the second display mode M1. In the second display mode in the prior art, the frame refresh frequency of the display panel is lower than that in the first display mode, and thus the light-emitting-off switching frequency between the sub-frames of the light-emitting device is also lower. The flicker caused by the obvious change in light-emitting brightness has a greater impact on the visual effect.

[0092] In the embodiment of the present application, the number of light-emitting stages T12 included in one sub-frame T1 when the display panel 100 works in the second display mode M1 is greater than the number of light-emitting stages T12 included in one sub-frame T1 when the display panel 100 works in the second display mode M1. This is advantageous to increase the light-emitting frequency of the light-emitting device 10 in a unit time in a frame, and thus to increase the light-emitting-off switching frequency between the sub-frames T1 of the light-emitting device 10. The flicker change of the display panel 100 when displaying a picture is not easily perceived by the human eye, and the flicker impact is reduced and the visual effect is improved.

[0093] In one embodiment of the present application, referring to Figure 5 When the display panel 100 displays a frame of picture in the first display mode M1, the maximum duration of the light-emitting stage T12 included in the S sub-frames T1 is Q1. In the first display mode M1, the duration of one light-emitting stage T12 included in all the light-emitting stages T1 in a frame is the longest, which is Q1. This light-emitting stage T12 can be used to provide more brightness when the display panel 100 displays a frame of high gray scale picture. As mentioned above, the shorter the duration of the light-emitting stage T12, the greater the current density received by the light-emitting device 10, and the better the light-emitting performance of the light-emitting device 10. Therefore, in the first display mode M1, some of the sub-frames T1 include light-emitting stages T12 with relatively short duration, and some of the sub-frames T1 include light-emitting stages T12 with relatively long duration. This is advantageous to make the light-emitting performance of the light-emitting device 10 better when the display panel 100 displays a frame of picture, and to make up the brightness required by the high gray scale by using the light-emitting stages T12 with relatively long duration. On the other hand, due to the difference in light-emitting time, the change in light-emitting brightness between the sub-frames T1 is large. However, when the display panel 100 works in the first display mode M1, the frame refresh frequency of the display panel 100 is high, and thus the change frequency of the light-emitting brightness between the sub-frames T1 is also fast. The flicker impact is small and the change is not easily perceived by the human eye.

[0094] Continuing to refer to Figure 5 When the display panel 100 displays a frame of picture in the second display mode M2, the maximum duration of the light-emitting stage T12 included in the S sub-frames T1 is Q2.

[0095] Optionally, the time length for the display panel 100 to display a frame of picture in the first display mode M1 is equal to the time length for the display panel 100 to display a frame of picture in the second display mode M2, when the display panel 100 needs to display a frame of picture with the same gray scale brightness in high frequency and low frequency respectively, the display panel 100 is configured to include longer light emitting phase duration and shorter light emitting phase duration in the first display mode M1 to form the target gray scale brightness. When the display panel 100 needs to display a frame of picture with the same gray scale brightness in the second display mode M2, in order to ensure that the light emitting duration in a frame is similar to that in the first display mode M1, and to uniformize the light emitting duration of each sub-frame T1 to avoid large difference in light emitting brightness, the display panel 100 can be configured to have similar or equal light emitting phase duration T12 of each sub-frame T1 in the second display mode M2, so that the maximum duration Q1 of the light emitting phase T1 in the first display mode M1 is greater than the maximum duration Q2 of the light emitting phase T12 in the second display mode M2, thereby facilitating the display panel 100 to display a frame of picture with the same gray scale brightness in high frequency and low frequency respectively, and ensuring that the light emitting duration is similar and the brightness is uniform.

[0096] In addition, in some other embodiments, when the time length for the display panel 100 to display a frame of picture in the first display mode M1 is not equal to the time length for the display panel 100 to display a frame of picture in the second display mode M2, in order to ensure that the display panel 100 displays a frame of picture with the same gray scale brightness in high frequency and low frequency respectively with consistent brightness, the display panel 100 can be configured to have a larger ratio of the maximum light emitting duration included in each sub-frame T1 in the first display mode M1 to the total light emitting duration in a frame than the ratio of the maximum light emitting duration included in each sub-frame T1 in the second display mode M2 to the total light emitting duration in a frame. It should be noted that the ratio of the maximum light emitting duration included in each sub-frame T1 in the first display mode M1 is larger, but this light emitting duration is not necessarily longer than the maximum light emitting duration included in each sub-frame T1 in the second display mode M2.

[0097] In the embodiments of the present application, Q1>Q2, when the display panel 100 displays a frame of picture in the second display mode M2, the maximum duration Q2 of the light emitting phase T12 included in the S sub-frames T1 is not too long, which is conducive to avoiding large difference in the duration of the light emitting phase T12 between the sub-frames T1 when the display panel 100 works in the second display mode M2, and reducing the risk that the light emitting brightness between the sub-frames T1 changes more obviously, on the basis of ensuring the brightness uniformity when the display panel 100 displays a frame of picture with the same gray scale brightness in high frequency and low frequency respectively.

[0098] In an embodiment of the present application, continuing to refer to Figure 5As shown, optionally, the time length for the display panel 100 to display a frame of picture in the first display mode M1 is equal to the time length for the display panel 100 to display a frame of picture in the second display mode M2. When the display panel 100 displays a frame of picture in the first display mode M1, the minimum duration of the light emitting stage T12 included in the S sub-frames T1 is Q3, the current density received by the light emitting device 10 in the light emitting stage T12 with the minimum duration is larger, the light emitting efficiency of the light emitting device 10 is higher, and additionally, a longer light emitting stage T12 can be used to make up the target brightness required by the display of a frame of picture.

[0099] When the display panel displays a frame of picture in the second display mode M2, the minimum duration of the light emitting stage T12 included in the S sub-frames T1 is Q4, and Q3=Q4. Similarly, the light emitting efficiency of the light emitting device 10 in this light emitting stage T12 is higher. In this process, Q3=Q4 is set, the display panel 100 can use a larger number of light emitting stages T12 to make up the target brightness required by the display of a frame of picture in the second display mode M2, and the light emitting time difference between the plurality of light emitting stages T12 is smaller, which is beneficial to improve the working performance of the light emitting device 10 in the second display mode M2, thereby improving the light emitting brightness accuracy of the light emitting device 10.

[0100] Additionally, in some other embodiments, when the time length for the display panel 100 to display a frame of picture in the first display mode M1 is not equal to the time length for the display panel 100 to display a frame of picture in the second display mode M2, in order to ensure that the brightness of a frame of picture with the same gray scale brightness displayed by the display panel 100 in the high frequency and the low frequency is consistent, the proportion of the minimum light emitting duration included in each sub-frame T1 in the total light emitting duration in the first display mode M1 of the display panel 100 can be set to be equal to or close to the proportion of the minimum light emitting duration included in each sub-frame T1 in the total light emitting duration in the second display mode M2 of the display panel 100. It should be noted that the proportion of the minimum light emitting duration included in each sub-frame T1 in the first display mode M1 of the display panel 100 is equal to or close to that in the second display mode M2, but this light emitting duration is not necessarily equal to or close to the minimum light emitting duration included in each sub-frame T1 in the second display mode M2 of the display panel 100.

[0101] In an embodiment of the present application, as shown in Figure 9 When the display panel 100 displays a frame of picture in the second display mode M2, the data voltage Vdata received by the pixel circuit 20 in the data writing stage T11 included in the S sub-frames T1 is the same.

[0102] When the durations of the light emitting phases T12 included in the S subframes T1 are all the same, and the data voltages Vdata received by the pixel circuit 20 in the data writing phases T11 included in the S subframes T1 are all the same, the light emitting brightness of the light emitting device 10 in the light emitting phases T12 in the S subframes T1 are all the same, so that the light emitting brightness change frequency between the S subframes T1 of the display panel 100 is S*F2 when the frame refresh frequency is F2, which is advantageous to greatly reduce the light emitting brightness change difference between the subframes T1 and provide the light emitting frequency of the light emitting device 10, and reduce the occurrence of flicker of the display panel 100 in the second display mode M2.

[0103] Figure 14 A timing diagram of a display panel in a third display mode provided by an embodiment of the present application, Figure 15 A timing diagram of a display panel in a third display mode provided by an embodiment of the present application.

[0104] In an embodiment of the present application, as shown in Figure 14 The display panel 100 further includes a third display mode M3, and the frame refresh frequency of the display panel 100 in the third display mode M3 is F3, and F1>F3>F2. In the present application, the display panel 100 is high frequency display when the frame refresh frequency in the first display mode M1 is F1, and the display panel 100 is low frequency display when the frame refresh frequency in the second display mode M2 is F2. Then, since the frame refresh frequency of the display panel 100 in the third display mode M3 is F3 and in the range of F1>F3>F2, the third display mode M3 is a display mode between high frequency display and low frequency display of the display panel 100. In the prior art, the display panel in the third display mode also has flicker when displaying, and it can be understood that the flicker degree of the display panel in the third display mode is smaller than that of the display panel in the second display mode.

[0105] When the display panel 100 displays a frame of picture in the third display mode M3, the durations of the L light emitting phases T12 included in the S subframes T1 are different, and N>L>M, and the durations of the light emitting phases T12 between some subframes T1 are the same and the durations of the light emitting phases T12 between some subframes T1 are different.

[0106] Optionally, as shown in Figure 15As shown in the third display mode M3, the duration of the light-emitting stage T12 in the S sub-frames T1 is different, and the data voltage Vdata received by the pixel circuit 20 in the data writing stage T11 is different; the duration of the light-emitting stage T12 in the S sub-frames T1 is the same, and the data voltage Vdata received by the pixel circuit 20 in the data writing stage T11 is the same. This is advantageous to improve the light-emitting brightness change frequency between the sub-frames T1 in the third display mode M3, and further reduce the flicker effect.

[0107] Figure 16 A light-emitting brightness-light-emitting duration schematic diagram of a display panel in the third display mode is provided for the embodiment of the present application.

[0108] As shown in the third display mode M3, Figure 15 , Figure 16 As shown in the third display mode M3, the duration of the light-emitting stage T12 in the S sub-frames T1 is different, and the data voltage Vdata received by the pixel circuit 20 in the data writing stage T11 is different; the duration of the light-emitting stage T12 in the S sub-frames T1 is the same, and the data voltage Vdata received by the pixel circuit 20 in the data writing stage T11 is the same. This is advantageous to improve the light-emitting brightness change frequency between the sub-frames T1 in the third display mode M3, and further reduce the flicker effect.

[0109] Similarly, a plurality of sub-frames T1 can be combined into a group of sub-frames starting from the second sub-frame t1, so that the light-emitting brightness between the adjacent two groups of sub-frames is the same, so that the light-emitting brightness change frequency of the S sub-frames in the third display mode M3 is an integer multiple of the frame refresh frequency F3.

[0110] Figure 17 A timing diagram of another display panel in the third display mode is provided for the embodiment of the present application.

[0111] In an embodiment of the present application, optionally, the number of the S sub-frames T1 in the first display mode M1, the second display mode M2 and the third display mode M3 of the display panel 100 are all the same. When the display panel 100 displays a frame of picture in the first display mode M1, the number of the light-emitting stages T12 included in the S sub-frames T1 is X. The frame refresh frequency of the display panel 100 in the first display mode M1 is high, and the flicker effect is small. A small number of light-emitting stages T12 can be set in each sub-frame T1. For example, as shown in FIG. 3, one light-emitting stage T12 is set in each sub-frame T1 in the first display mode M1. At this time, the total number of the light-emitting stages T12 included in the S sub-frames T1 is X=S. Figure 8

[0112] Optionally, the number of the light-emitting stages T12 included in each sub-frame T1 in the first display mode M1 can be different.

[0113] When the display panel 100 displays a frame of picture in the second display mode M2, the number of the light-emitting stages T12 included in the S sub-frames T1 is Y. The frame refresh frequency of the display panel 100 in the second display mode M2 is low, and the flicker effect is generally larger than that in the first display mode M1 and the third display mode M3. The number of the light-emitting stages T12 in each sub-frame T1 can be increased in the second display mode M2, so as to increase the change frequency of the light-emitting brightness between the sub-frames T1 and reduce the flicker effect. For example, as shown in FIG. 4, three light-emitting stages T12 are set in each sub-frame T1 in the second display mode M2. At this time, the total number of the light-emitting stages T12 included in the S sub-frames T1 is Y=3*S. Figure 13

[0114] Optionally, the number of the light-emitting stages T12 included in each sub-frame T1 in the second display mode M2 can be different.

[0115] When the display panel 100 displays a frame of picture in the third display mode M3, the number of the light-emitting stages T12 included in the S sub-frames T1 is Z. The frame refresh frequency of the display panel 100 in the third display mode M2 is between that in the first display mode M1 and that in the second display mode M2. The above embodiment mentions that the display panel 100 in the third display mode M3 is also affected by the flicker, but the flicker effect is smaller than that in the second display mode M2. The number of the light-emitting stages T12 in each sub-frame T1 can be adaptively increased in the third display mode M3 to reduce the flicker effect. For example, as shown in FIG. 5, two light-emitting stages T12 are set in each sub-frame T1 in the third display mode M3. At this time, the total number of the light-emitting stages T12 included in the S sub-frames T1 is Z=2*S. Figure 17

[0116] ​​​Optionally, in the third display mode M3, the number of light-emitting stages T12 included in each sub-frame T1 can be different.

[0117] In the embodiments of the present application, X < Z < Y is set, which is beneficial to adaptively adjusting the number of light-emitting stages T12 in each sub-frame T1 according to the flicker effect generated by the display panel 100 working in different display modes, and is beneficial to improving the display effect of the display panel 100 in multi-sub-frame working mode.

[0118] In addition, in some other embodiments, when the number of S sub-frames T1 of the display panel 100 in the first display mode M1, the second display mode M2 and the third display mode M3 is different, the number of light-emitting stages T12 in one sub-frame T1 when the display panel 100 displays one frame of picture in the third display mode M3 can be set to be between the first display mode M1 and the second display mode M2.

[0119] Figure 18 Another working schematic diagram of a display panel is provided in the embodiments of the present application.

[0120] In an embodiment of the present application, referring to Figure 18 Optionally, the time length for the display panel 100 to display one frame of picture in the first display mode M1 is equal to the time length for the display panel 100 to display one frame of picture in the second display mode M2. When the display panel 100 displays one frame of picture in the first display mode M1, the maximum duration of the light-emitting stages T12 included in the S sub-frames T1 is Q1. As mentioned above, the combination of the light-emitting stage T12 with long duration and the light-emitting stage T12 with short duration can be used in the first display mode M1 to improve the performance of the light-emitting device 10 and achieve the target brightness of one frame of picture, which will not be described here again.

[0121] When the display panel 100 displays one frame of picture in the second display mode M2, the maximum duration of the light-emitting stages T12 included in the S sub-frames T1 is Q2. When the display panel 100 displays one frame of picture in the second display mode M2, the maximum duration Q2 of the light-emitting stages T12 included in the S sub-frames T1 is not too long, which is beneficial to uniformizing the duration of the light-emitting stages T12 between the sub-frames T1, avoiding the large difference in the duration of the light-emitting stages T12 between the sub-frames T1 when the display panel 100 works in the second display mode M2, and ensuring the consistency of the picture brightness when the display panel 100 displays the same gray scale brightness at high frequency and low frequency.

[0122] When the display panel 100 displays a frame of picture in the third display mode M3, the maximum duration of the light emitting stage T12 included in the S sub-frames T1 is Q5. According to the above description, the degree of flicker influence generated by the display panel 100 in the third display mode M3 is between the first display mode M1 and the second display mode M2, so the light emitting device 10 can be adaptively used to improve the working performance of the light emitting device 10 by using the light emitting stage T12 with a shorter duration, and the light emitting stage T12 with a longer duration is used to reach the target brightness of a frame of picture.

[0123] In addition, in some other embodiments, when the display panel 100 displays a frame of picture in the first display mode M1 for a time period different from that in the second display mode M2 and the third display mode M3, in order to ensure that the picture brightness of the display panel 100 is consistent when displaying a frame of picture with the same gray scale brightness in the high frequency and the low frequency and the frequency band between the high frequency and the low frequency, the proportion of the maximum light emitting duration of each sub-frame T1 of the display panel 100 in the third display mode M3 in the total light emitting duration in a frame of picture is between the first display mode M1 and the second display mode M2. It should be noted that the proportion of the maximum light emitting duration of each sub-frame T1 of the display panel 100 in the first display mode M1 is large, but this light emitting duration is not necessarily longer than the maximum light emitting duration of each sub-frame T1 of the display panel 100 in the second display mode M2 and the third display mode M3.

[0124] In the embodiments of the present application, Q1>Q5>Q2, which is beneficial to adaptively adjust the duration of the light emitting stage T12 in each sub-frame T1 according to the flicker influence generated by the display panel 100 in different display modes, and is beneficial to adapt to different display modes to improve the working performance of the light emitting device 10 as much as possible and meet the target brightness of a frame of picture.

[0125] In an embodiment of the present application, the frame refresh frequency F3 of the display panel 100 in the third display mode M3 can be in the range of 30Hz≤F3<60Hz. When the frame refresh frequency F3 of the display panel 100 is in the above range, the display panel 100 can be driven to display by using the driving method of the display panel 100 in the third display mode M3 provided in the above embodiments, thereby reducing the flicker influence.

[0126] In an embodiment of the present application, the frame refresh frequency F1 of the display panel 100 in the first display mode M1 can be in the range of F1≥60Hz. When the frame refresh frequency F1 of the display panel 100 is in the above range, the display panel 100 can be driven to display by using the driving method of the display panel 100 in the first display mode M1 provided in the above embodiments.

[0127] The frame refresh rate F2 of the display panel 100 in the second display mode M2 ​​can be in the range of 0Hz < F2 ≤ 30Hz. When the frame refresh rate F1 of the display panel 100 is within the above range, the driving method of the display panel 100 in the second display mode M2 ​​provided in the above embodiment can be used to drive the display panel 100 for display. It should be noted that when the frame refresh rate F2 is 0Hz < F2 ≤ 15Hz, it can be called a very low frequency case. The driving method provided in the above embodiment, in which a single subframe T1 of the S subframes T1 in a frame includes multiple light-emitting stages T12, can be used to significantly increase the light-emitting brightness change frequency of the light-emitting device 10 in a frame and reduce the flickering effect caused by low-frequency display.

[0128] This application provides a display panel 100, for reference... Figure 1 As shown, the driving method provided in the above embodiments is used for driving.

[0129] In the display panel 100, the duration of the light emission phase T12 between some or S subframes T1 in a frame of the display panel 100 under the first display mode M1 is set to be different. This allows the display panel 100 to more flexibly adjust the light emission time of different subframes T1 when achieving the brightness of a frame, thereby more flexibly combining the light emission brightness of each subframe T1 to obtain a more efficient light emission mode. It also helps to make the display brightness of the display panel 100 in a frame more accurate by adjusting the brightness between multiple subframes T1, thereby improving the display effect of the display panel 100.

[0130] When setting a frame of the display panel 100 in the second display mode M2, the duration of the light-emitting phase T12 between some or zero subframes T1 is different. This helps to make the duration of the light-emitting phase T12 between multiple subframes T1 the same, providing a condition for the light-emitting brightness to be the same between multiple subframes T1. This helps to reduce the difference in light-emitting brightness between multiple subframes T1, reducing the flickering effect caused by the low frequency of light-emitting brightness change and the obvious light-emitting brightness change between subframes T1 in low-frequency display, and thus improving the display effect of the display panel 100.

[0131] Figure 19 This is a schematic diagram of a pixel circuit provided in an embodiment of this application.

[0132] like Figure 19 As shown, the pixel circuit 20 includes transistors D1-D7, circuit nodes J1-J4, and storage capacitor Cst. Optionally, transistors D1-D7 are all P-type transistors, and the gates of transistors D1-D7 are turned on when they receive a low-level signal.

[0133] CombinationFigure 2 As shown in the working process of the pixel circuit 20:

[0134] In the data writing stage T11, the data writing signal V1 transmits an enable signal, and the transistor D2, the transistor D4 and the transistor D7 are all turned on. The transistor D2 writes the data voltage Vdata to the circuit node J2 of the transistor D3; the transistor D4 compensates the threshold voltage of the transistor D3 to the circuit node J1, that is, to the gate of the transistor D3. The transistor D7 writes the reset voltage Vref to the circuit node J4, that is, resets the anode of the light emitting device 10.

[0135] In the light emitting stage T12, the light emitting control signal EMIT transmits an enable signal, and the transistor D1 and the transistor D6 are all turned on. The transistor D1 writes the first power voltage PVDD to the first electrode of the transistor D3, and the first power voltage PVDD drives the transistor D3 to be turned on and generates a light emitting driving current; the transistor D6 is turned on to form a path between the first power voltage PVDD and the second power voltage PVEE, and the light emitting driving current is transmitted to the anode of the light emitting device 10 to drive the light emitting device 10 to emit light.

[0136] The transistor D5 receives the signal V2 transmit enable signal before the data writing stage T11, and the transistor D5 is turned on. The transistor D5 transmits the reset voltage Vref to the gate of the transistor T3, which is used to reset the gate of the transistor D3.

[0137] Optionally, the transistor D4 and the transistor D5 can be N-type transistors. Optionally, the pixel circuit 20 can further include a bias transistor connected to a certain electrode of the transistor D3, which is used to provide a bias voltage for the transistor D3 and improve the bias state of the transistor D3.

[0138] Figure 20 A schematic diagram of a display device provided by an embodiment of the present application.

[0139] An embodiment of the present application provides a display device 200, as shown in the drawings, which comprises the display panel 100 provided by the above embodiment. The display device 200 can be a television, a computer, a mobile phone or the like device for display. Figure 20 As shown, the display device 200 comprises the display panel 100 provided by the above embodiment. The display device 200 can be a television, a computer, a mobile phone or the like device for display.

[0140] In the display device 200, the display panel 100 is configured to have different durations of the light emitting stage T12 between the partial or S subframes T1 in one frame in the first display mode M1, which is beneficial to more flexible adjustment of the light emitting time of different subframes T1 when the display panel 100 implements the brightness of one frame, so as to more flexibly combine the light emitting brightness of each subframe T1 to obtain a more efficient light emitting mode, and is beneficial to more accurate display brightness of the display panel 100 in one frame through the brightness adjustment between the plurality of subframes T1, and improves the display effect of the display panel 100.

[0141] The display panel 100 is configured to have different durations of the light emitting stage T12 between the partial or 0 subframes T1 in one frame in the second display mode M2, which is beneficial to the same duration of the light emitting stage T12 between the plurality of subframes T1, provides a condition for the same light emitting brightness between the plurality of subframes T1, is beneficial to reduce the light emitting brightness difference between the plurality of subframes T1, reduces the flicker influence caused by the low light emitting brightness change frequency and the obvious light emitting brightness change between the subframes T1 when displaying at low frequency, and is beneficial to improve the display effect of the display panel 100.

[0142] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A driving method for a display panel, characterized in that, The display panel includes at least one light-emitting device and a pixel circuit, wherein the pixel circuit drives the light-emitting device to emit light. The display panel comprises S subframes within one frame, and the operation of the pixel circuit in the subframe includes: During the data writing phase, the pixel circuit receives the data voltage; During the light-emitting stage, the pixel circuit receives a valid light-emitting control signal and generates a light-emitting driving current, which drives the light-emitting device to emit light. The display panel includes a first display mode and a second display mode. The frame refresh rate of the display panel in the first display mode is F1, and the frame refresh rate of the display panel in the second display mode is F2, wherein F1 > F2. The driving method for the display panel includes: When the display panel displays a frame in the first display mode, the durations of N light-emitting stages among the light-emitting stages included in the S sub-frames are different; When the display panel displays a frame in the second display mode, the durations of M of the light-emitting stages included in the S sub-frames are different; N > M, and N and M are both integers greater than or equal to 0; When the display panel displays a frame in the second display mode, the duration of the light-emitting phases included in the S sub-frames is the same, and at least one of the sub-frames includes multiple light-emitting phases. Wherein, when the display panel displays a frame in the first display mode, the maximum duration of the light emission phase included in the S sub-frames is Q1; When the display panel displays a frame in the second display mode, the maximum duration of the light-emitting phase included in the S sub-frames is Q2; Q1 > Q2.

2. The driving method according to claim 1, characterized in that, When the display panel displays a frame, the data voltage received by the pixel circuit of the S subframes with different durations in the light-emitting stage is also different in the data writing stage.

3. The driving method according to claim 1 or 2, characterized in that, When the display panel displays a frame, the subframes among the S subframes that have the same duration during the light-emitting phase also receive the same data voltage in their pixel circuits during the data writing phase.

4. The driving method according to claim 1, characterized in that, The S subframes include the first to the Sth subframes, which are executed sequentially. The duration of the light emission phase included in the first subframe is less than or equal to the duration of the light emission phase included in the second to the Sth subframes, respectively.

5. The driving method according to claim 4, characterized in that, The duration of the Sth subframe during the illumination phase is greater than the duration of the 1st subframe - the (S-1)th subframe during the illumination phase.

6. The driving method according to claim 1, characterized in that, When the display panel displays a frame in the first display mode, the number of light-emitting stages included in the S sub-frames is X1; When the display panel displays a frame in the second display mode, the number of light-emitting stages included in the S sub-frames is Y1; Where X1 < Y1.

7. The driving method according to claim 1, characterized in that, When the display panel displays a frame in the first display mode, the number of light-emitting stages included in a sub-frame is X2; When the display panel displays a frame in the second display mode, the number of light-emitting stages included in a sub-frame is Y2; Where X2 < Y2.

8. The driving method according to claim 1, characterized in that, When the display panel displays a frame in the first display mode, the minimum duration of the light emission phase included in the S sub-frames is Q3; When the display panel displays a frame in the second display mode, the minimum duration of the light-emitting phase included in the S sub-frames is Q4; Where Q3 = Q4.

9. The driving method according to claim 1, characterized in that, When the display panel displays a frame in the second display mode, the pixel circuits in the data writing stage of the S sub-frames receive the same data voltage.

10. The driving method according to claim 1, characterized in that, The display panel also includes a third display mode, wherein the frame refresh rate of the display panel in the third display mode is F3, where F1 > F3 > F2; When the display panel displays a frame in the third display mode, the durations of the L light-emitting stages among the S sub-frames are different, and N > L > M.

11. The driving method according to claim 10, characterized in that, When the display panel displays a frame in the first display mode, the number of light-emitting stages included in the S sub-frames is X; When the display panel displays one frame in the second display mode, the number of light-emitting stages included in the S sub-frames is Y; When the display panel displays a frame in the third display mode, the number of light-emitting stages included in the S sub-frames is Z; Where X < Z < Y.

12. The driving method according to claim 10, characterized in that, When the display panel displays a frame in the first display mode, the maximum duration of the light emission phase included in the S sub-frames is Q1; When the display panel displays a frame in the second display mode, the maximum duration of the light-emitting phase included in the S sub-frames is Q2; When the display panel displays a frame in the third display mode, the maximum duration of the light-emitting phase included in the S sub-frames is Q5; Among them, Q1 > Q5 > Q2.

13. The driving method according to claim 10, characterized in that, 30Hz≤F3<60Hz.

14. The driving method according to claim 1, characterized in that, F1≥60Hz; 0Hz<F2≤30Hz.

15. A display panel, characterized in that, The driving method described in any one of claims 1-14 is used for driving.

16. A display device, characterized in that, Includes the display panel as described in claim 15.

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