Display panel and display device

Abstract

The application provides a display panel and a display device, which can improve the compensation accuracy of the low-frequency first-frame display brightness of a display picture in different frame rate scenes, improve the compensation effect, inhibit the screen flickering phenomenon in the frame rate process of the display picture, and improve the stability of the display picture. The picture display process of the display panel includes a current frame and a first to-be-displayed frame. The display time of the current frame is earlier than the display time of the first to-be-displayed frame. The refresh rate of the current frame is a first refresh rate, and the refresh rate of the first to-be-displayed frame is a second refresh rate. In the case that the first refresh rate and the second refresh rate are not equal, and the first refresh rate and the second refresh rate are both less than a preset low-frequency refresh rate, the picture display process of the display panel further includes an inserted frame. The display time of the inserted frame is between the current frame and the first to-be-displayed frame, and the refresh rate of the inserted frame is greater than or equal to a preset high-frequency refresh rate. The high-frequency preset refresh rate is greater than the low-frequency preset refresh rate.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] With the advancement and development of display technology, the requirements for the visual effects and image quality of display panels are gradually increasing. During the display process where the refresh rate of the display panel switches from high to low frequency, the state of the driving transistors changes significantly, causing the driving transistors to be in a negative bias state during the first low-frequency frame. This results in a decrease in the display brightness of the first low-frequency frame, which gradually recovers in the second low-frequency frame. Consequently, there is a difference between the display brightness of the first low-frequency frame and the steady-state brightness of the display, affecting the stability of the display and causing screen flickering issues. Summary of the Invention

[0003] Based on this, embodiments of this application provide a display panel and display device that can improve the compensation accuracy of the low-frequency first frame display brightness in different frequency switching scenarios, improve the compensation effect, suppress screen flickering during frequency switching, improve the stability of the display, and improve the display effect and display quality of the display panel.

[0004] A first aspect of this application provides a display panel, wherein the display process of the display panel includes a current frame and a first frame to be displayed, wherein the display time of the current frame is earlier than the display time of the first frame to be displayed, the refresh rate of the current frame is a first refresh rate, and the refresh rate of the first frame to be displayed is a second refresh rate.

[0005] When the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than the preset low-frequency refresh rate, the display process of the display panel further includes inserting a frame. The display time of the inserted frame is located between the current frame and the first frame to be displayed, and the refresh rate of the inserted frame is greater than or equal to the preset high-frequency refresh rate.

[0006] The high-frequency preset refresh rate is greater than the low-frequency preset refresh rate.

[0007] A second aspect of this application provides a display panel, including a display driver chip and a pixel circuit;

[0008] The display driver chip is used to provide driving signals to the pixel circuit, wherein the display driver chip is configured to:

[0009] The display panel obtains a first refresh rate for displaying the current frame and a second refresh rate for displaying the first frame to be displayed, wherein the display time of the current frame precedes the display time of the first frame to be displayed;

[0010] When the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, a driving signal is provided to the pixel circuit so that the pixel circuit drives the display screen to display an inserted frame according to the driving signal, and the display time of the inserted frame is between the current frame and the first frame to be displayed, and the refresh rate of the inserted frame is greater than or equal to a preset high-frequency refresh rate.

[0011] A third aspect of this application provides a display device, comprising:

[0012] Display panels as described in any of the first aspects above.

[0013] This application provides a display panel and display device. When the first refresh rate of the current frame and the second refresh rate of the first frame to be displayed are not equal, and both the first and second refresh rates are less than a preset low-frequency refresh rate, an insert frame with a refresh rate greater than or equal to a preset high-frequency refresh rate is inserted between the current frame and the first frame to be displayed. The preset high-frequency refresh rate is greater than the preset low-frequency refresh rate. By inserting a high-frequency insert frame between two low-frequency frames that need to be switched, the refresh rate difference between the first frame to be displayed and the previous insert frame can be increased. Furthermore, the refresh rate difference between the first frame to be displayed and the insert frame can be made close to the refresh rate difference corresponding to a preset compensation value for the first low-frequency frame of the display panel. Therefore, when using the same compensation signal for brightness compensation during switching between display frames with different refresh rates, the use of a high-frequency signal directly switching to a low-frequency signal during low-frequency switching is avoided, reducing the risk of overcompensation during brightness compensation, preventing flickering in the first frame to be displayed after switching, improving the stability of the display image, and enhancing the display effect and quality of the display panel. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic timing diagram of a display panel provided for an embodiment of this application;

[0016] Figure 2 A related brightness data diagram of a display panel before improvement is provided in an embodiment of this application;

[0017] Figure 3A schematic timing diagram of a related display panel provided for an embodiment of this application;

[0018] Figure 4 An improved brightness data diagram of the first frame of a display panel is provided as an embodiment of this application;

[0019] Figure 5 A brightness data diagram showing overcompensation after first-frame improvement of a display panel, provided as an embodiment of this application;

[0020] Figure 6 A schematic timing diagram of another display panel provided in an embodiment of this application;

[0021] Figure 7 A schematic timing diagram of yet another display panel provided in an embodiment of this application;

[0022] Figure 8 A schematic timing diagram of another display panel provided in an embodiment of this application;

[0023] Figure 9 A schematic timing diagram of a display panel provided for an embodiment of this application;

[0024] Figure 10 A schematic timing diagram of another display panel provided in an embodiment of this application;

[0025] Figure 11 A schematic structural diagram of a display panel provided in an embodiment of this application;

[0026] Figure 12 A schematic structural diagram of a pixel circuit of a display panel provided in an embodiment of this application;

[0027] Figure 13 This is a schematic structural diagram of a display device provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Display driver chip; 200 - Pixel circuit; 1000 - Display panel. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0032] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, parts, regions, layers, doping types, and / or portions, these elements, parts, regions, layers, doping types, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, part, region, layer, doping type, or portion from another element, part, region, layer, doping type, or portion. Therefore, without departing from the teachings of this invention, the first element, component, region, layer, doping type, or portion discussed below may be represented as a second element, component, region, layer, or portion; for example, the first doping type may be referred to as the second doping type, and similarly, the second doping type may be referred to as the first doping type; the first doping type and the second doping type are different doping types, for example, the first doping type may be P-type and the second doping type may be N-type, or the first doping type may be N-type and the second doping type may be P-type.

[0033] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “under,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0034] When used herein, the singular forms of “a,” “an,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, in this specification, the term “and / or” includes any and all combinations of the associated listed items.

[0035] It should be noted that with the advancement and development of display technology, the requirements for the visual effects and image quality of display panels are gradually increasing. During the display panel's refresh rate transition from high to low frequencies, the state of the driving transistors changes significantly, causing the driving transistors to be in a negative bias state during the first low-frequency frame. This results in a decrease in the display brightness of the first low-frequency frame, which gradually recovers in the second low-frequency frame. Consequently, there is a difference between the display brightness of the first low-frequency frame and the steady-state brightness of the display, affecting the stability of the display and causing screen flickering issues.

[0036] In traditional display panels, the brightness of the low-frequency first frame is usually compensated by changing the bias voltage signal and reference voltage signal of the low-frequency first frame. This reduces the brightness difference between the low-frequency first frame and the steady-state brightness of the display, thereby improving the stability of the display.

[0037] However, traditional display panels typically use the same preset compensation value during frequency switching at different amplitudes, and this preset compensation value is usually determined based on the maximum and minimum refresh rates of the display panel. Therefore, when the difference in refresh rates between the two frames before and after frequency switching is small, using the preset compensation value for brightness compensation can lead to overcompensation in the first low-frequency frame after frequency switching. This results in the brightness of the first low-frequency frame being greater than the steady-state brightness, further exacerbating screen flickering, affecting display stability, and impacting the display effect and quality. Adjusting the compensation signal based on the refresh rate difference between the two frames before and after frequency switching increases the computational power required for frequency switching, further increasing the power consumption of the display panel.

[0038] In view of this, proposing a display panel that can improve the stability of low-frequency image switching and reduce the difficulty of brightness compensation is a technical problem that urgently needs to be solved.

[0039] like Figure 1As shown, in a first aspect of this application, a display panel is provided. The display process of the display panel includes a current frame f1 and a first frame to be displayed f2, wherein the display time of the current frame f1 is earlier than the display time of the first frame to be displayed f2, the refresh rate of the current frame f1 is a first refresh rate, and the refresh rate of the first frame to be displayed f2 is a second refresh rate. When the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, the display process of the display panel further includes an inserted frame f0, the display time of the inserted frame f0 is between the current frame f1 and the first frame to be displayed f2, and the refresh rate of the inserted frame f0 is greater than or equal to a preset high-frequency refresh rate; wherein the high-frequency preset refresh rate is greater than the low-frequency preset refresh rate.

[0040] It should be noted that, Figure 1 The TE (Tearing Effect) signal in the display prevents screen tearing during refresh. Upon the rising edge of the TE signal, or after detecting a high-level TE signal, the next frame of image data can be sent to the display driver chip to drive the display of the next frame. Therefore, the TE signal interval represented by the dashed line in the illustration represents the display cycle of one frame. A longer display cycle indicates a lower refresh rate for that frame, and vice versa.

[0041] For example, the preset low refresh rate and preset high refresh rate can be determined based on the switchable refresh rate of the display panel. For instance, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the preset low refresh rate can be 60Hz, and the preset high refresh rate can be 120Hz, 480Hz, or higher. Similarly, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the preset low refresh rate can be 60Hz, and the preset high refresh rate can be 90Hz, 480Hz, or higher.

[0042] like Figure 2 As shown, the blue curve in the data graph represents the actual brightness of the displayed image, while the red curve represents the weighted brightness of the displayed image obtained after weighted fitting and filtering of the actual brightness. The left vertical axis of the data graph represents the actual brightness value of the displayed image in nits, and the right vertical axis represents the weighted brightness value of the displayed image in nits. According to... Figure 2 It can be seen that in the relevant display panel, when the display screen switches from high frequency to low frequency, after the high frequency screen in a steady state is displayed, the low frequency screen will first display a low frequency first frame with a brightness lower than the steady state brightness of the display screen, and the display brightness will reach the steady state brightness starting from the second frame of the low frequency screen.

[0043] like Figure 3 As shown, in the relevant display panel, for the current frame f1 and the first frame to be displayed f2 where the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than the preset low-frequency refresh rate, a preset compensation signal is usually used to compensate the first frame to be displayed f2. Here, DVH represents the bias voltage signal of the display screen, DVHA represents the bias voltage signal of the display screen in the non-display phase, or represents the bias voltage signal corresponding to the display screen at a high refresh rate, DVHB represents the bias voltage signal corresponding to the display screen at a low refresh rate, and DVHC represents the bias voltage signal corresponding to the display screen when switching refresh rates. Vref2 represents the reference voltage signal of the display screen, VarA represents the reference voltage signal of the display screen in the non-display phase, or represents the reference voltage signal corresponding to the display screen at a high refresh rate, VarB represents the reference voltage signal corresponding to the display screen at a low refresh rate, and VarC represents the reference voltage signal corresponding to the display screen when switching refresh rates. It should be noted that DVHC and VarC are preset and used to compensate for the first frame of the low-frequency display when the display screen switches from a high-frequency refresh rate to a low-frequency refresh rate, so as to reduce the brightness difference between the first low-frequency display frame and the low-frequency display frame in steady state.

[0044] like Figure 4 As shown, in the relevant display panel, the blue curve of the data graph represents the actual brightness of the displayed image, and the red curve represents the weighted brightness of the displayed image obtained after weighted fitting and filtering of the actual brightness. The left vertical axis represents the actual brightness value of the displayed image in nits, and the right vertical axis represents the weighted brightness value of the displayed image in nits. According to Figure 4 It can be seen that in the relevant display panel, when the display screen is switched from high frequency to low frequency, after the high frequency screen is displayed in a steady state, a preset compensation signal is applied to the first low frequency screen to compensate for the first low frequency screen. This can make the brightness of the compensated first low frequency screen close to the steady state brightness of the low frequency screen, and reduce the brightness difference between the brightness of the first low frequency screen and the steady state brightness.

[0045] It should be noted that since the compensation signals DVHC and VarC are set according to the application scenario of high-frequency direct switching to low-frequency display, when switching from the current low-frequency frame f1 to the first low-frequency frame to be displayed f2, using the same compensation signal will cause the first frame to be displayed f2 to be overcompensated, resulting in the brightness of the first frame to be displayed f2 being greater than the brightness of the display at the same refresh rate under steady state, further aggravating the flickering problem of the display.

[0046] like Figure 5As shown, in the relevant display panel, the blue curve of the data graph represents the actual brightness of the displayed image, and the red curve represents the weighted brightness of the displayed image obtained after weighted fitting and filtering of the actual brightness. The left vertical axis represents the actual brightness value of the displayed image in nits, and the right vertical axis represents the weighted brightness value of the displayed image in nits. According to Figure 5 It can be seen that in the relevant display panel, when the display screen switches from the first low frequency to the second low frequency, after the steady-state image of the first low frequency is displayed, the same preset compensation signal as the high frequency direct cut low frequency is applied to the first frame of the second low frequency to compensate for the brightness of the first frame of the second low frequency. This will cause the brightness of the first frame of the second low frequency to be overcompensated, making the brightness of the first frame of the second low frequency higher than the steady-state brightness of the display screen, further increasing the brightness difference between the brightness of the first frame of the second low frequency and the steady-state brightness.

[0047] The display panel provided in this application embodiment, when the first refresh rate of the current frame f1 and the second refresh rate of the first frame to be displayed f0 are not equal, and both the first and second refresh rates are less than a preset low-frequency refresh rate, inserts an insert frame f0 with a refresh rate greater than or equal to a preset high-frequency refresh rate between the current frame f1 and the first frame to be displayed f2, wherein the preset high-frequency refresh rate is greater than the preset low-frequency refresh rate. By inserting a high-frequency insert frame f0 between two low-frequency frames that need to be switched, the difference in refresh rates between the first frame to be displayed f2 and the previous insert frame f0 can be increased. Furthermore, the difference in refresh rates between the first frame to be displayed f2 and the insert frame f0 can be made close to the difference in refresh rates corresponding to the preset compensation value of the first low-frequency frame of the display panel. Therefore, when using the same compensation signal for brightness compensation during switching between display frames with different refresh rates, the use of a high-frequency direct-to-low-frequency compensation signal during low-frequency switching is avoided, reducing the risk of overcompensation during brightness compensation, preventing flickering in the first frame to be displayed after switching, improving the stability of the display image, and enhancing the display effect and quality of the display panel.

[0048] like Figure 1 , Figure 6 and Figure 7 As shown, in some implementations, the inserted frame f0 includes one.

[0049] It should be noted that, as Figure 7 As shown, before the display time of the current frame f1, the display screen also includes a high-frequency frame f3' and the previous frame f1', wherein the refresh rate of the high-frequency frame f3' is greater than the preset high-frequency refresh rate, and the refresh rate of the previous frame f1' is equal to the first refresh rate. After the display time of the first frame to be displayed f2, the display screen also includes the next frame f3, wherein the refresh rate of the next frame f3 is equal to the second refresh rate.

[0050] exist Figure 7 During the display screen switching process shown, when the display screen switches from the high-frequency frame f3' to the previous frame f1', the refresh rate difference between the two frames is large. Brightness compensation can be performed using DVHC and VarC without causing overcompensation. After the previous frame f1' is displayed, when the display screen switches from the previous frame f1' to the current frame f1, DVHB and VarB adjust the display of the current frame f1 to a standard steady-state display. With an inserted frame f0 set, when the display screen switches from the current frame f1 to the inserted frame f0, it can be driven using DVHA and VarA without compensation for the inserted frame f0. When the display screen switches from the inserted frame f0 to the first frame to be displayed f2, the refresh rate difference between the two frames is large, and brightness compensation can be performed again using DVHC and VarC. After the first frame to be displayed f2 is displayed, when the display screen switches from the first frame to be displayed f2 to the next frame f3, DVHB and VarB adjust the display of the next frame f3 to a standard steady-state display.

[0051] This application provides a display panel and display device. By inserting a high-frequency insertion frame f0 between two low-frequency frames that need to be switched, the display time of the insertion frame f0 can be further shortened, the power consumption required for displaying the high-frequency insertion frame f0 can be reduced, the display effect of the display screen can be further improved, and the display performance of the display panel can be improved.

[0052] like Figure 8 As shown, in some implementations, the inserted frame f0 includes multiple frames.

[0053] It should be noted that the number of inserted frames f0 can be up to three. The longer the display time of the inserted frames f0, the greater the display panel's power consumption; therefore, the number of inserted frames f0 needs to be reduced. Since the refresh rate of the inserted frames f0 is relatively high, even with multiple inserted frames f0, the total display time of all inserted frames f0 is still relatively short, resulting in minimal impact on the display effect. Therefore, multiple inserted frames f0 can be inserted between the current frame f1 and the first frame to be displayed f2.

[0054] The display panel provided in this application embodiment, by increasing the number of inserted frames f0, can achieve a smooth transition between the current frame f1 and the inserted frame f0, avoiding the display instability caused by switching from the low-frequency current frame f1 to the high-frequency inserted frame f0. This improves the stability of the inserted frame f0 display, allowing the first frame f2 to be displayed only after the inserted frame f0 has stabilized. This further enhances the brightness uniformity and stability of the display panel, reduces the risk of screen flicker, and improves the display effect and quality.

[0055] In some implementations, at least two inserted frames f0 have the same refresh rate.

[0056] For example, the refresh rates of all inserted frames f0 between the current frame f1 and the first frame to be displayed f2 can be equal. For instance, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, and 1Hz, the refresh rates of the inserted frames f0 can be 120Hz, 480Hz, or higher, and the refresh rates of each inserted frame f0 are equal.

[0057] For example, such as Figure 9 As shown, the refresh rate of the inserted frame f0 between the current frame f1 and the first frame to be displayed f2 can increase in a stepwise manner. According to Figure 9 As shown, there are three inserted frames: f0, f0', and f0'', between the current frame f1 and the first frame to be displayed f2. The refresh rate of the inserted frame f0'' is greater than that of the inserted frame f0', and the refresh rate of the inserted frame f0' is greater than that of the inserted frame f0. For example, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, and 1Hz, the refresh rates of each inserted frame f0 can be 90Hz, 120Hz, 480Hz, or higher, respectively.

[0058] The display panel provided in this application embodiment can reduce the adjustment frequency of the inserted frame f0 by setting the refresh rates of at least two inserted frames f0 between the current frame f1 and the first frame to be displayed f2 to be equal, thereby reducing the driving complexity and control difficulty of the inserted frame f0, further improving the brightness uniformity and stability of the display panel, and avoiding over-compensation of the display screen caused by different refresh rates of the inserted frames f0, reducing the risk of screen flicker, and improving the display effect and display quality of the display panel.

[0059] In some implementations, an insert frame f0 is periodically inserted between the current frame f1 and the first frame to be displayed f2.

[0060] For example, such as Figure 8 As shown, multiple insertion frames f0 with the same refresh rate can be continuously inserted between the current frame f1 and the first frame to be displayed f2. The insertion period of the insertion frame f0 is the display period of the insertion frame f0. For example, when the refresh rate of the insertion frame f0 is 120Hz, the display period of the insertion frame f0 includes a non-display phase and a display phase. The non-display phase is used to receive drive signals, and the display phase is used to drive the light-emitting elements to emit light. Different refresh rates of the insertion frames f0 usually indicate different durations required for the display phase within the display period, while the duration required for the non-display phase usually does not change with the refresh rate. The duration required for the non-display phase on the same display panel is usually fixed. Figure 8 The content shown indicates that in the inserted frame f0, the non-display phase corresponds to the low level phase of the TE signal, and the display phase corresponds to the high level phase of the TE signal.

[0061] For example, the display periods of each inserted frame f0 can be unequal, so that the refresh rates of each inserted frame f0 are unequal. For instance, if multiple inserted frames f0 are periodically inserted between the current frame f1 and the first frame to be displayed f2, and the display periods of each inserted frame f0 are unequal, for a display panel with a switchable refresh rate of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the refresh rates of the inserted frames f0 can be set to be equal at intervals. For example, the refresh rates of multiple inserted frames f0 can be alternately set to 120Hz, 480Hz, or higher. For a display panel with a switchable refresh rate of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the refresh rates of the inserted frames f0 can be set to be equal at intervals. For example, the refresh rates of multiple inserted frames f0 can be cyclically set to 90Hz, 120Hz, 480Hz, or higher. For example, if multiple insertion frames f0 are periodically inserted between the current frame f1 and the first frame to be displayed f2, and the display periods of each insertion frame f0 are not equal, for a display panel with a switchable refresh rate of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the refresh rate of the multiple insertion frames f0 is set in a step-by-step manner from 120Hz to 480Hz or higher. For a display panel with a switchable refresh rate of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the refresh rate of the multiple insertion frames f0 is set in a step-by-step manner from 90Hz, 120Hz to 480Hz or higher.

[0062] The display panel provided in this application embodiment can improve the continuity and smoothness of the displayed image by periodically inserting insertion frames f0, thereby improving the stability of the displayed image and further improving the display effect and display performance of the display panel.

[0063] In some implementations, the refresh rate of the inserted frame f0 is greater than or equal to 90Hz.

[0064] For example, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the refresh rate of the inserted frame f0 can be 120Hz, 480Hz, or higher. For a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the refresh rate of the inserted frame f0 can be 90Hz, 120Hz, or 480Hz, or higher. For a display panel with switchable refresh rates of 90Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the refresh rate of the inserted frame f0 can be 90Hz.

[0065] The display panel provided in this application embodiment, by setting the refresh rate of the inserted frame f0 to be greater than or equal to 90Hz, can increase the difference in refresh rates between the first frame to be displayed f2 and the previous inserted frame f0. Furthermore, it can make the difference in refresh rates between the first frame to be displayed f2 and the inserted frame f0 close to the difference in refresh rates corresponding to the preset compensation value of the first low-frequency frame of the display panel. Therefore, when switching between display screens with different refresh rates using the same compensation signal for brightness compensation, it avoids using a high-frequency to low-frequency compensation signal during low-frequency switching, reducing the risk of overcompensation during brightness compensation, preventing flickering in the first frame to be displayed after switching, improving the stability of the display screen, and enhancing the display effect and quality of the display panel.

[0066] like Figure 8 and Figure 10 As shown, in some implementations, the number of inserted frames f0 is negatively correlated with the refresh rate of the inserted frames f0. According to... Figure 8 and Figure 10 As shown, the refresh rate of inserted frame f0 is less than that of inserted frame f0 when the number of inserted frames is 5.

[0067] For example, when there are 5 inserted frames f0, the refresh rate of the inserted frame f0 can be 90Hz. When there are 3 inserted frames f0, the refresh rate of the inserted frame f0 can be 120Hz. When there is 1 inserted frame f0, the refresh rate of the inserted frame f0 can be 480Hz or higher.

[0068] It should be noted that the higher the refresh rate of the inserted frame f0, the higher the power consumption required to display the inserted frame f0. Therefore, by setting the number of inserted frames f0 to be negatively correlated with the refresh rate of the inserted frame f0, it is easier to control the number of inserted frames f0, which can reduce the driving difficulty of the inserted frames f0, further reduce the display power consumption of the display panel, improve the stability of the display image, and further improve the display effect and display quality of the display panel.

[0069] In some implementations, the frequency difference between the first refresh rate and the second refresh rate is a first frequency difference, wherein the first frequency difference is less than or equal to a preset frequency difference threshold.

[0070] For example, the preset frequency difference threshold can be determined based on the switchable refresh rate of the display panel. For instance, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the preset frequency difference threshold can be from 9Hz to 59Hz. For a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the preset frequency difference threshold can be from 10Hz to 50Hz.

[0071] It should be noted that when the first frequency difference is less than or equal to the preset frequency difference threshold, the use of the preset compensation signal when switching between the current frame f1 and the first frame to be displayed f2 will exacerbate the problem of over-compensation of the brightness of the displayed image.

[0072] The display panel provided in this application embodiment, by setting a first frequency difference less than or equal to a preset frequency difference threshold, can insert a frame f0 between the current frame f1 and the first frame to be displayed f2 when their refresh rates are similar. This can further improve the brightness uniformity and stability when switching between low-frequency display images with similar first frequency differences, reduce the risk of flickering in the first frame to be displayed f2 after switching, and improve the display effect and display quality of the display panel.

[0073] In some embodiments, the display panel further includes a display driver chip, wherein the display driver chip is configured to provide a compensation signal to the pixel circuit when the refresh rate of the inserted frame f0 is not equal to the second refresh rate of the first frame to be displayed f2, so that the pixel circuit drives the display screen to display the first frame to be displayed f2 according to the compensation signal.

[0074] The display panel provided in this application embodiment can compensate for the display brightness of the first frame after switching by providing a compensation signal to the pixel circuit through the display driver chip when the first refresh rate of the current frame f1 and the second refresh rate of the first frame to be displayed f0 are not equal. This can improve the brightness uniformity and stability of the display screen, reduce the risk of screen flicker, and improve the display effect and display quality of the display panel.

[0075] In some implementations, the compensation signal is determined based on a standard high-frequency refresh rate and a standard low-frequency refresh rate, wherein the standard high-frequency refresh rate is greater than or equal to a preset high-frequency refresh rate and the standard low-frequency refresh rate is less than a preset low-frequency refresh rate; wherein, the first frequency difference is less than the second frequency difference, the first frequency difference is the frequency difference between the first refresh rate and the second refresh rate, and the second frequency difference is the frequency difference between the standard high-frequency refresh rate and the standard low-frequency refresh rate.

[0076] For example, the standard low-frequency refresh rate and the standard high-frequency refresh rate can be determined based on the switchable refresh rates of the display panel, wherein the standard low-frequency refresh rate and the standard high-frequency refresh rate can be determined based on the minimum and maximum switchable refresh rates of the display panel. For instance, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, and 1Hz, the standard low-frequency refresh rate can be 1Hz or 10Hz, and the standard high-frequency refresh rate can be 120Hz, 480Hz, or higher. For a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, and 10Hz, the standard low-frequency refresh rate can be 10Hz, and the standard high-frequency refresh rate can be 90Hz, 120Hz, 480Hz, or higher.

[0077] It should be noted that for display panels where the first frequency difference is less than the second frequency difference, performing brightness compensation on the first frame to be displayed f2 based on the compensation signal determined by the second frequency difference will cause the first frame to be displayed f2 to have an overcompensation problem.

[0078] The display panel provided in this application embodiment, when the first frequency difference is less than the second frequency difference, sets an inserted frame f0 between the current frame f1 and the first frame to be displayed f2, and further compensates the brightness of the first frame to be displayed f2 through a compensation signal. This can avoid the problem of brightness reduction of the first frame to be displayed f2 during the refresh rate switching process of the display screen, which would cause the display screen to flicker. This can improve the brightness uniformity and stability of the display screen, and improve the display effect and display performance of the display panel.

[0079] In some implementations, the refresh rate of the inserted frame f0 is equal to the standard high-frequency refresh rate.

[0080] For example, for a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 60Hz, 20Hz, 10Hz, or 1Hz, the standard high-frequency refresh rate can be 120Hz or 480Hz or higher, and the refresh rate of the inserted frame f0 can be 120Hz, 480Hz, or higher. For a display panel with switchable refresh rates of 480Hz or higher, 120Hz, 90Hz, 60Hz, 20Hz, or 10Hz, the standard high-frequency refresh rate can be 90Hz or 120Hz or 480Hz or higher, and the refresh rate of the inserted frame f0 can be 90Hz or 120Hz or 480Hz or higher.

[0081] The display panel provided in this application embodiment can further increase the frequency difference between the inserted frame f0 and the first display frame f2 by setting the refresh rate of the inserted frame f0 to be equal to the standard high-frequency refresh rate. This makes the frequency difference between the inserted frame f0 and the first display frame f2 closer to the second frequency difference, thereby enhancing the compensation effect of the compensation signal on the first display frame f2. This further improves the brightness uniformity and stability of the display screen, suppresses the flickering problem of the display screen, and improves the display effect and display performance of the display panel.

[0082] In some implementations, the compensation signal is used to adjust at least one of the bias voltage and the reference voltage of the pixel circuit.

[0083] like Figure 2 As shown, in the relevant display panels, for high-frequency and low-frequency display images with different refresh rates, the threshold voltage Vth of the driving transistor is different during the display process. Therefore, during the switching from a high-frequency display image to a low-frequency display image, the threshold voltage Vth of the driving transistor changes, causing the driving transistor to become negatively biased. This, in turn, leads to a decrease in the brightness of the first frame of the low-frequency display image. Figure 2 The brightness data graph shown has pits.

[0084] It should be noted that adjusting the bias voltage can adjust the source voltage of the driving transistor, thereby reducing the gate-source voltage of the driving transistor. This weakens the negative bias of the driving transistor, thus suppressing its negative bias. This can reduce the brightness reduction in the first frame of low-frequency display and increase its overall brightness, thereby correcting issues such as… Figure 2 The dimples appear on the brightness data graph shown.

[0085] It should be noted that adjusting the reference voltage can adjust the anode voltage of the light-emitting element. It should also be noted that while adjusting the bias voltage can weaken the negative bias of the driving transistor during the display of the low-frequency first frame, a brightness difference still exists between the displayed brightness of the low-frequency first frame after bias voltage compensation and the steady-state brightness. Therefore, by adjusting the reference voltage, the drain voltage of the driving transistor and the reference voltage can jointly power the light-emitting element, further compensating for the brightness of the low-frequency first frame. This allows the steady-state brightness of the low-frequency display to reach the target brightness required for steady-state operation, improving the accuracy of the displayed image and enhancing the display effect and performance of the display panel.

[0086] The display panel provided in this application embodiment can suppress the negative bias of the driving transistors in the pixel circuit by adjusting the bias voltage and reference voltage of the pixel circuit through a compensation signal. This can improve the display brightness of the frame driven by the compensation signal, compensate for the steady-state brightness of the display image, and improve the accuracy of the display brightness of the switched frame image. Therefore, when switching from the inserted frame f0 to the first frame to be displayed f2, the risk of display image flicker is reduced, the brightness uniformity and stability of the display image are improved, and the display effect and performance of the display panel are enhanced.

[0087] In some implementations, when the display panel displays the inserted frame f0, the bias voltage of the pixel circuit is a first bias voltage, and when the display panel displays the first frame to be displayed f2, the reference voltage of the pixel circuit is a second reference voltage; wherein the first bias voltage is greater than the second bias voltage.

[0088] like Figure 3 , Figures 6 to 8 As shown, the first bias voltage is DVHA, and the second bias voltage is DVHC.

[0089] It should be noted that during the transition from the inserted frame f0 to the first display frame f2, the displayed image changes from the high-frequency inserted frame f0 to the low-frequency display image, which reduces the brightness of the low-frequency first frame, the first display frame f2. Therefore, by reducing the bias voltage, the source voltage of the driving transistor can be reduced, thereby reducing the gate-source voltage of the driving transistor, suppressing the negative bias caused by the threshold voltage change of the driving transistor, and further improving the display brightness of the first display frame f2, thus reducing the brightness difference between the display brightness of the first display frame f2 and the steady-state brightness.

[0090] The display panel provided in this application embodiment can suppress the negative bias of the driving transistor in the pixel circuit by setting the first bias voltage to be greater than the second bias voltage. This can further improve the display brightness of the frame driven by the compensation signal. As a result, when the inserted frame f0 is switched to the first frame to be displayed f2, the risk of screen flicker is reduced, the brightness uniformity and stability of the screen are improved, and the display effect and performance of the display panel are improved.

[0091] In some implementations, when the display panel displays the inserted frame f0, the reference voltage of the pixel circuit is a first reference voltage, and when the display panel displays the first frame to be displayed f2, the bias voltage of the pixel circuit is a second bias voltage, and the first reference voltage is less than the second reference voltage.

[0092] like Figure 3 , Figures 6 to 8 As shown, the first reference voltage is VarA, and the second reference voltage is VarC.

[0093] It should be noted that during the transition from the inserted frame f0 to the first display frame f2, the displayed image changes from a high-frequency inserted frame f0 to a low-frequency display image, which reduces the brightness of the low-frequency first frame, the first display frame f2. Therefore, by increasing the reference voltage, the anode voltage of the light-emitting element can be compensated to increase its brightness, thereby improving the overall display brightness and reducing the brightness difference between the displayed brightness of the first display frame f2 and its steady-state brightness. Furthermore, when the brightness of the first display frame f2 is adjusted using both the bias voltage and the reference voltage, the reference voltage can further compensate for the brightness adjustment effect of the bias voltage, further reducing the brightness difference between the displayed brightness of the first display frame f2 and the steady-state brightness of the displayed image, thus further improving the flicker problem.

[0094] The display panel provided in this application embodiment can compensate for the anode voltage of the light-emitting element by setting the first reference voltage to be less than the second reference voltage. By increasing the anode voltage of the light-emitting element, the display brightness of the display screen is improved. Thus, when the inserted frame f0 switches to the first display frame f2, the risk of screen flicker is reduced, the brightness uniformity and stability of the display screen are improved, and the display effect and performance of the display panel are improved.

[0095] like Figure 11 As shown, in a second aspect of this application, a display panel is provided, including a display driver chip 100 and a pixel circuit 200. The display driver chip 100 is configured to: acquire a first refresh rate for displaying the current frame f1 and a second refresh rate for displaying a first frame to be displayed f2, wherein the display time of the current frame f1 precedes the display time of the first frame to be displayed f2; and, when the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, provide a drive signal to the pixel circuit 200 so that the pixel circuit 200 drives the display screen to display an inserted frame f0 according to the drive signal, wherein the display time of the inserted frame f0 is between the current frame f1 and the first frame to be displayed f2, and the refresh rate of the inserted frame f0 is greater than or equal to a preset high-frequency refresh rate.

[0096] For example, the display panel may include a plurality of pixel circuits 200, which are used to drive the display pixels to light up. The pixel circuits 200 may include 8T1C pixel circuits.

[0097] The display panel provided in this application embodiment, when the first refresh rate of the current frame f1 and the second refresh rate of the first frame to be displayed f0 are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, drives the pixel circuit 200 through the display driver chip 100 to insert an insert frame f0 with a refresh rate greater than or equal to a preset high-frequency refresh rate between the current frame f1 and the first frame to be displayed f2. The preset high-frequency refresh rate is greater than the low-frequency preset refresh rate. By inserting a high-frequency insert frame f0 between two low-frequency frames that need to be switched, the difference in refresh rates between the first frame to be displayed f2 and the previous insert frame f0 can be increased. Furthermore, the difference in refresh rates between the first frame to be displayed f2 and the insert frame f0 can be made close to the difference in refresh rates corresponding to a preset compensation value for the low-frequency first frame of the display panel 1000. This allows for the use of the same compensation signal for brightness compensation when switching between display screens at different refresh rates. It avoids using a high-frequency compensation signal to directly switch from a low-frequency signal during low-frequency switching, reducing the risk of overcompensation during brightness compensation, preventing flickering in the first frame to be displayed after switching, improving the stability of the display screen, and enhancing the display effect and quality of the display panel 1000.

[0098] In some embodiments, the pixel circuit 200 includes: a driving transistor configured to generate a driving current; a switching transistor configured to transmit a data signal to the source of the driving transistor; a compensation transistor configured to diode-connect the driving transistor; a storage capacitor configured to store the data signal transmitted through the driving transistor connected by the switching transistor and the diode; a first initialization transistor configured to provide an initialization voltage to the storage capacitor and the gate of the driving transistor in response to an initialization signal; a first light-emitting control transistor configured to transmit a power supply voltage to the source of the driving transistor in response to a light-emitting signal; and a second light-emitting control transistor configured to connect the drain of the driving transistor to a light-emitting element in response to a light-emitting control signal; the light-emitting element is configured to emit light based on the driving current; wherein at least one of the driving transistor, the switching transistor, the compensation transistor, the initialization transistor, the first light-emitting control transistor, and the second light-emitting control transistor is implemented by an N-type metal-oxide-semiconductor transistor.

[0099] like Figure 12As shown, the pixel circuit 200 can be an 8T1C pixel circuit, specifically including: a first transistor M1, a second transistor M2, a third transistor M3, a fourth transistor M4, a fifth transistor M5, a sixth transistor M6, a seventh transistor M7, an eighth transistor M8, a light-emitting element OLED, and a storage capacitor Cst. Specifically, the driving transistor is the third transistor M3, the switching transistor is the second transistor M2, the compensation transistor is the fourth transistor M4, the first initialization transistor is the fifth transistor M5, the first light-emitting control transistor is the first transistor M1, and the second light-emitting control transistor is the sixth transistor M6.

[0100] For example, all transistors in the pixel circuit 200 can be implemented by N-type metal-oxide-semiconductor transistors or by P-type metal-oxide-semiconductor transistors, without any specific limitation.

[0101] like Figure 12As shown, one end of the storage capacitor Cst is connected to the first power supply voltage PVDD, and the other end of the storage capacitor Cst is connected between the gate of the third transistor M3 and the second end of the fifth transistor M5. The anode of the light-emitting element OLED is electrically connected to the second end of the sixth transistor M6, and the cathode of the light-emitting element OLED is connected to the second power supply voltage PVEE. The first end of the first transistor M1 is connected to the first power supply voltage PVDD, the gate of the first transistor M1 is connected to the lighting signal Emit, and the second end of the first transistor M1 is electrically connected to the first end of the third transistor M3. The first end of the second transistor M2 is connected to the data signal Vdata, the gate of the second transistor M2 is connected to the scan signal SP, and the second end of the second transistor M2 is connected between the second end of the first transistor M1 and the first end of the third transistor M3. The gate of the third transistor M3 is electrically connected to the second end of the fifth transistor M5, and the second end of the third transistor M3 is electrically connected to the first end of the sixth transistor M6. The first end of the fourth transistor M4 is electrically connected to the other end of the storage capacitor Cst, the gate of the fourth transistor M4 is connected to the scan signal S2N, and the second end of the fourth transistor M4 is connected between the second end of the third transistor M3 and the sixth transistor M6. The first terminal of the fifth transistor M5 is connected to the first reference signal Vref1, the gate terminal of the fifth transistor M5 is connected to the scan signal S1N, and the second terminal of the fifth transistor M5 is connected between the other end of the storage capacitor Cst and the first terminal of the fourth transistor M4. The first terminal of the sixth transistor M6 is electrically connected to the second terminal of the third transistor M3, the gate terminal of the sixth transistor M6 is connected to the lighting signal Emit, and the second terminal of the sixth transistor M6 is connected to the anode of the light-emitting element OLED. The first terminal of the seventh transistor M7 is connected to the second reference signal Vref2, the gate terminal of the seventh transistor M7 is connected to the scan signal SP*, and the second terminal of the seventh transistor M7 is connected between the second terminal of the sixth transistor M6 and the anode of the light-emitting element OLED. The first terminal of the eighth transistor M8 is connected to the bias voltage signal DVH, the gate terminal of the eighth transistor M8 is connected to the scan signal SP*, and the second terminal of the eighth transistor M8 is connected between the second terminal of the first transistor M1 and the first terminal of the third transistor M3.

[0102] In such Figure 12During the driving process of the pixel circuit 200 shown, the scan signal S1N is used to control the on and off of the fifth transistor M5. When the fifth transistor M5 is on, it writes the first reference signal Vref1 to the gate of the third transistor M3 to reset the first node N1. The scan signal S2N is used to control the on and off of the fourth transistor M4. When the fourth transistor M4 is on, it performs threshold voltage compensation on the third transistor M3. The scan signal SP is used to control the on and off of the second transistor M2. When the second transistor M2 is on, it writes the data signal Vdata to the first terminal of the third transistor M3. The scan signal SP is used to control the on and off of the seventh transistor M7 and the eighth transistor M8. When the seventh transistor M7 is on, it writes the second reference signal Vref2 to the anode of the light-emitting element OLED to reset the anode voltage of the light-emitting element OLED. When the eighth transistor M8 is on, it writes the bias voltage signal DVH to the eighth transistor M8 to adjust the bias of the second node N2. The Emit signal is used to control the on and off of the first transistor M1 and the sixth transistor M6. When the first transistor M1 and the sixth transistor M6 are on, the first power supply voltage PVDD is written to the anode of the light-emitting element OLED to realize the light emission of the light-emitting element OLED.

[0103] It should be noted that, in cases such as Figure 12 In the pixel circuit 200 shown, during the bias adjustment phase, the fourth transistor M4 and the eighth transistor M8 are turned on. The bias voltage signal DVH is transmitted to the third transistor M3 through the eighth transistor M8, and then to the gate of the third transistor M3 through the fourth transistor M4, thereby enabling bias adjustment of the first node N1, the second node N2, and the third node N3. During the initialization phase, the fifth transistor M5 is turned on, followed by the fourth transistor M4. The first reference signal Vref1 is used to adjust the gate of the third transistor M3 through the fifth transistor M5, and also to adjust the third node N3 through the fifth transistor M5 and the fourth transistor M4. During the data writing phase, the second transistor M2 and the fourth transistor M4 are turned on. The data signal Vdata is written to the gate of the third transistor M3 through the second transistor M2 and the fourth transistor M4, while the eighth transistor M8 can adjust the bias of the second node N2.

[0104] The display panel provided in this application embodiment, by configuring at least one transistor in the pixel circuit 200 as an N-type metal-oxide-semiconductor transistor, can reduce the leakage current of the pixel circuit 200, reduce the display power consumption of the display panel, further improve the leakage problem of the display panel in the low-frequency display process, improve the accuracy and stability of the displayed image, and improve the display effect and display quality of the display panel.

[0105] In some implementations, the first initialization transistor and the compensation transistor are implemented using N-type metal-oxide-semiconductor transistors.

[0106] For example, the remaining transistors in the pixel circuit 200 may be implemented by P-type metal-oxide-semiconductor transistors.

[0107] The display panel provided in this application embodiment, by configuring the first initialization transistor and the compensation transistor in the pixel circuit 200 as N-type metal-oxide-semiconductor transistors, can enable the first initialization transistor and the compensation transistor to conduct under the control of a high-level signal, thereby further improving the display effect and display quality of the display panel.

[0108] like Figure 13 As shown, in a third aspect of the present application, a display device is provided, including a display panel 1000 as described in any of the first aspects above.

[0109] The display device provided in this application embodiment, when the first refresh rate of the current frame f1 and the second refresh rate of the first frame to be displayed f0 are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, inserts an insert frame f0 with a refresh rate greater than or equal to a preset high-frequency refresh rate between the current frame f1 and the first frame to be displayed f2, wherein the preset high-frequency refresh rate is greater than the low-frequency preset refresh rate. By inserting a high-frequency insert frame f0 between two low-frequency frames that need to be switched, the difference in refresh rates between the first frame to be displayed f2 and the previous insert frame f0 can be increased, and further, the difference in refresh rates between the first frame to be displayed f2 and the insert frame f0 can be made close to the difference in refresh rates corresponding to the preset compensation value of the low-frequency first frame of the display panel 1000. This allows for the use of the same compensation signal for brightness compensation when switching between display screens at different refresh rates. It avoids using a high-frequency compensation signal to directly switch from a low-frequency signal during low-frequency switching, reducing the risk of overcompensation during brightness compensation, preventing flickering in the first frame to be displayed after switching, improving the stability of the display screen, and enhancing the display effect and quality of the display panel 1000.

[0110] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel's screen display process includes a current frame and a first frame to be displayed, wherein the display time of the current frame precedes the display time of the first frame to be displayed, the refresh rate of the current frame is a first refresh rate, and the refresh rate of the first frame to be displayed is a second refresh rate. When the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than the preset low-frequency refresh rate, the display process of the display panel further includes inserting a frame. The display time of the inserted frame is located between the current frame and the first frame to be displayed, and the refresh rate of the inserted frame is greater than or equal to the preset high-frequency refresh rate. Wherein, the preset high-frequency refresh rate is greater than the preset low-frequency refresh rate, the frequency difference between the refresh frequency of the inserted frame and the first refresh rate is greater than the first frequency difference, the first frequency difference is the frequency difference between the first refresh rate and the second refresh rate, and the first frequency difference is less than or equal to the preset frequency difference threshold.

2. The display panel according to claim 1, characterized in that, The inserted frame includes one.

3. The display panel according to claim 1, characterized in that, The inserted frames include multiple frames.

4. The display panel according to claim 3, characterized in that, At least two of the inserted frames have the same refresh rate.

5. The display panel according to claim 3, characterized in that, The inserted frame is periodically inserted between the current frame and the first frame to be displayed.

6. The display panel according to claim 1, characterized in that, The refresh rate of the inserted frame is greater than or equal to 90Hz.

7. The display panel according to claim 3, characterized in that, The number of inserted frames is negatively correlated with the refresh rate of the inserted frames.

8. The display panel according to claim 1, characterized in that, Also includes: The display driver chip is configured as follows: If the refresh rate of the inserted frame is not equal to the second refresh rate of the first frame to be displayed, a compensation signal is provided to the pixel circuit so that the pixel circuit drives the display screen to display the first frame to be displayed according to the compensation signal.

9. The display panel according to claim 8, characterized in that, The compensation signal is determined based on a standard high-frequency refresh rate and a standard low-frequency refresh rate, wherein the standard high-frequency refresh rate is greater than or equal to a preset high-frequency refresh rate, and the standard low-frequency refresh rate is less than a preset low-frequency refresh rate. Wherein, the first frequency difference is less than the second frequency difference, the first frequency difference is the frequency difference between the first refresh rate and the second refresh rate, and the second frequency difference is the frequency difference between the standard high-frequency refresh rate and the standard low-frequency refresh rate.

10. The display panel according to claim 9, characterized in that, The refresh rate of the inserted frame is equal to the standard high-frequency refresh rate.

11. The display panel according to claim 8, characterized in that, The compensation signal is used to adjust at least one of the bias voltage and the reference voltage of the pixel circuit.

12. The display panel according to claim 11, characterized in that, When the inserted frame is displayed on the display panel, the bias voltage of the pixel circuit is a first bias voltage, and the reference voltage of the pixel circuit is a first reference voltage. When the first frame to be displayed is displayed on the display panel, the bias voltage of the pixel circuit is a second bias voltage, and the reference voltage of the pixel circuit is a second reference voltage. Wherein, the first bias voltage is greater than the second bias voltage; and / or, The first reference voltage is less than the second reference voltage.

13. A display panel, characterized in that, This includes display driver chips and pixel circuits; The display driver chip is used to provide driving signals to the pixel circuit, wherein the display driver chip is configured to: The display panel obtains a first refresh rate for displaying the current frame and a second refresh rate for displaying the first frame to be displayed, wherein the display time of the current frame precedes the display time of the first frame to be displayed; When the first refresh rate and the second refresh rate are not equal, and both the first refresh rate and the second refresh rate are less than a preset low-frequency refresh rate, a driving signal is provided to the pixel circuit so that the pixel circuit drives the display screen to display an inserted frame according to the driving signal, and the display time of the inserted frame is located between the current frame and the first frame to be displayed, and the refresh rate of the inserted frame is greater than or equal to a preset high-frequency refresh rate; wherein, the frequency difference between the refresh frequency of the inserted frame and the first refresh rate is greater than a first frequency difference, the first frequency difference is the frequency difference between the first refresh rate and the second refresh rate, and the first frequency difference is less than or equal to a preset frequency difference threshold.

14. The display panel according to claim 1 or 13, characterized in that, It includes a pixel circuit and a display driver chip, wherein the pixel circuit includes: The driving transistor is configured to generate a driving current; A switching transistor is configured to transmit a data signal to the source of the driving transistor; A compensation transistor is configured to be diode-connected to the driving transistor; A storage capacitor is configured to store data signals transmitted by the drive transistor connected via the switching transistor and the diode; A first initialization transistor is configured to provide an initialization voltage to the gate of the storage capacitor and the drive transistor in response to an initialization signal; The first light-emitting control transistor is configured to transmit a power supply voltage to the source of the driving transistor in response to a light-emitting signal; The second light-emitting control transistor is configured to connect the drain of the driving transistor to the light-emitting element in response to a light-emitting control signal; The light-emitting element is configured to emit light based on the driving current; In this embodiment, at least one of the driving transistor, the switching transistor, the compensation transistor, the first initialization transistor, the first light-emitting control transistor, and the second light-emitting control transistor is implemented by an N-type metal-oxide-semiconductor transistor.

15. The display panel according to claim 14, characterized in that, The first initialization transistor and the compensation transistor are implemented using N-type metal-oxide-semiconductor transistors.

16. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 13.

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