Driving method, device and display equipment of display panel

Abstract

The application discloses a display panel driving method, device and display equipment. The display panel has multiple refresh rates, including a first refresh rate and a second refresh rate, and the second refresh rate is less than the first refresh rate. The driving method comprises the following steps: controlling the display panel to display a current frame image at the first refresh rate; generating an inserted image located after the current frame image based on the first refresh rate, the second refresh rate and the current frame image; controlling the display panel to display the inserted image within an interval time length after the current frame image is displayed, and the interval time length is determined based on the first refresh rate and the second refresh rate; and controlling the display panel to display a next frame image at the second refresh rate after the interval time length, and the next frame image is an image located in a next frame of the current frame image. The application can generate an inserted image after the current frame image at a low frame rate to repeatedly refresh the picture information of the current frame image, improve the flicker problem of the display panel and improve the display quality.

Description

TECHNICAL FIELD

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

[0002] The liquid crystal display equipment with VRR (Variable Refresh Rate) technology can adopt different refresh rates according to different application scenarios. The charging time of each frame is the same under different refresh rates, and the difference lies in the blanking time of each frame. The blanking time of each frame under low refresh rate will be longer than that under high refresh rate, thereby the influence of panel leakage will be intensified, and the overall brightness of the panel will be reduced. When the display equipment is switched between high refresh rate and low refresh rate in a short time according to a certain rule, the brightness difference under different refresh rates will cause the panel to flicker, which seriously affects the display quality. SUMMARY

[0003] Embodiments of the present application provide a display panel driving method, device and display equipment to improve the flicker problem when the display panel switches the refresh rate and improve the display quality.

[0004] To solve the above technical problems, embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, a display panel driving method is provided. The display panel has a plurality of refresh rates, including a first refresh rate and a second refresh rate, and the second refresh rate is less than the first refresh rate. The driving method comprises:

[0006] controlling the display panel to display a current frame image at the first refresh rate;

[0007] generating an inserted image after the current frame image based on the first refresh rate, the second refresh rate and the current frame image;

[0008] controlling the display panel to display the inserted image within an interval duration after the current frame image is displayed, and the interval duration is determined based on the first refresh rate and the second refresh rate;

[0009] controlling the display panel to display a next frame image at the second refresh rate after the interval duration, and the next frame image is an image of a frame next to the current frame.

[0010] In combination with the first aspect, the inserted image after the current frame image is generated based on the first refresh rate, the second refresh rate and the current frame image, comprising:

[0011] obtain a first time length T1 based on the first refresh rate;

[0012] obtain a second time length T2 based on the second refresh rate;

[0013] determine a difference between the second time length T2 and the first time length T1 as an interval time length AT;

[0014] generate at least one of the inserted images based on a multiple relationship between the interval time length AT and the first time length T1.

[0015] In combination with the first aspect, the at least one of the inserted images includes a first image and / or a second image, the first image being identical to the current frame image, and the second image being a partial image of the current frame image.

[0016] The generating of the at least one of the inserted images based on the multiple relationship between the interval time length AT and the first time length T1 includes:

[0017] if the interval time length AT and the first time length T1 satisfy AT=N×T1, and N is a positive integer, then N first images arranged in sequence are generated;

[0018] if the interval time length AT and the first time length T1 satisfy AT=K×T1+M×T1, and K is a natural number and 0<M<1, then K first images and one second image arranged in sequence are generated.

[0019] In combination with the first aspect, the M×T1 is defined as a third time length, and the second image is determined by the following steps:

[0020] obtain a first display time length and a blank time length of the display panel under the first refresh rate;

[0021] obtain a second display time length based on the third time length and the blank time length;

[0022] obtain an image corresponding to a partial image in the current frame image based on the second display time length and the first display time length, and generate the second image.

[0023] In combination with the first aspect, the M×T1 is defined as a third time length, and the controlling of the display panel to display the inserted images includes:

[0024] controlling the display panel to display each of the first images in sequence at the first refresh rate, and / or controlling the display panel to display the second image at a third refresh rate, the third refresh rate being obtained based on the third time length.

[0025] In combination with the first aspect, before controlling the display panel to display the inserted image, the driving method further includes:

[0026] polarity inversion is performed on each of the first image and the second image, so that each of the first image and the second image is opposite in polarity to an adjacent previous image.

[0027] In combination with the first aspect, before controlling the display panel to display a next frame image at the second refresh rate, the driving method further includes:

[0028] in a case where at least one of the inserted images includes the second image, the polarity of the next frame image is controlled to be the same as the polarity of the second image;

[0029] in a case where at least one of the inserted images includes only the first image, polarity inversion is performed on the next frame image, so that the next frame image is opposite in polarity to an adjacent previous first image.

[0030] In combination with the first aspect, before controlling the display panel to display the inserted image, the driving method further includes:

[0031] the polarity of each of the first image and the second image is controlled to be the same as the polarity of the current frame image;

[0032] In combination with the first aspect, before controlling the display panel to display a next frame image at the second refresh rate, the driving method further includes:

[0033] polarity inversion is performed on the next frame image, so that the next frame image is opposite in polarity to an adjacent previous image.

[0034] A second aspect provides a driving apparatus of a display panel, the display panel having a plurality of refresh rates, the plurality of refresh rates including a first refresh rate and a second refresh rate, the second refresh rate being smaller than the first refresh rate; the driving apparatus includes:

[0035] a first display control module configured to control the display panel to display a current frame image at the first refresh rate;

[0036] an inserted image generation module configured to generate, based on the first refresh rate, the second refresh rate and the current frame image, an inserted image located after the current frame image;

[0037] a second display control module configured to control the display panel to display the inserted image within an interval duration after the current frame image is displayed, the interval duration being determined based on the first refresh rate and the second refresh rate;

[0038] The first display control module is further configured to control the display panel to display a next frame image at the second refresh rate after the interval duration, the next frame image being an image located in a next frame of the current frame image.

[0039] In a third aspect, a display device is provided, which comprises a display panel and a processor, and the processor is configured to drive the display panel to display images by using the driving method of the display panel according to any one of the first aspect or the driving apparatus of the display panel according to the second aspect.

[0040] One of the above technical solutions has the following advantages or beneficial effects:

[0041] Compared with the prior art, the driving method of the display panel provided in the present application has the following advantages or beneficial effects: The driving method of the display panel provided in the present application can generate an inserted image after the current frame image at a low refresh rate, so as to repeatedly refresh the image information of the current frame image, which can not only greatly shorten the blank duration of the display panel at a low refresh rate, improve the problem of serious leakage at a low refresh rate, but also improve the flicker problem of the display panel and improve the display quality.

[0042] The driving apparatus of the display panel provided in the present application can not only improve the problem of serious leakage at a low refresh rate, but also improve the flicker problem of the display panel and improve the display quality.

[0043] The display device provided in the present application can support multiple refresh rates, and can also improve the flicker problem of images, and has excellent display quality. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. 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 on the basis of these drawings.

[0045] Figure 1 FIG. 1 is a structural schematic diagram of a display device according to an embodiment of the present application;

[0046] Figure 2 A display timing signal diagram for switching the refresh rate of the display panel in the embodiment of the present application from a first refresh rate to a second refresh rate;

[0047] Figure 3 A schematic diagram of the overall process of the driving method of the display panel in the embodiment of the present application;

[0048] Figure 4 A display timing signal example diagram for the display panel in the embodiment of the present application;

[0049] Figure 5 A Figure 4 An example diagram of the POL signal timing corresponding to the display timing signal in the embodiment of the present application;

[0050] Figure 6 Another example diagram of the POL signal timing in the embodiment of the present application;

[0051] Figure 7 Still another example diagram of the POL signal timing in the embodiment of the present application;

[0052] Figure 8 A structural diagram of the driving device of the display panel in the embodiment of the present application.

[0053] Reference signs:

[0054] 10 - display panel; 20 - processor; 801 - first display control module; 802 - inserted image generation module; 803 - second display control module. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0056] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise specifically limited.

[0057] Please refer to Figure 1 , Figure 1 The structure of the display device of the embodiment of the present application is illustrated. The display device includes a display panel 10 and a processor 20, the display panel 10 is used to display a picture, the display panel 10 is a panel equipped with VRR technology, which can have multiple refresh rates. The processor 20 can be used to send a driving signal to the display panel 10 to control the display panel 10 to display a picture at different refresh rates, wherein the refresh rate refers to the speed at which the image on the screen is updated when the display panel 20 is working, that is, the number of times the image appears on the screen per second, such as 60 times per second, and the refresh frequency is 60Hz (Hertz). The processor 20 can include a timing controller (TCON) and a driving control device (Driver IC), the timing controller is used to provide a timing signal, and the driving control device is used to send a driving signal to the display panel 10 based on the timing signal.

[0058] The display device is usually fixed at the highest refresh rate when working, but under certain specific conditions, the display device often needs to display at a lower refresh rate. For example, for the display device equipped with VRR technology, the response speed of the dynamic picture is often needed to be adjusted in some application scenarios, and this process is achieved by using FreeSync technology or Gsync technology, that is, adaptive synchronization to achieve dynamic refresh rate technology, so as to realize the synchronization of the refresh rate of the display and the frame rate of the graphics card. The charging time of each frame is the same under different refresh rates, and the difference lies in the blanking time of each frame, which is longer under low refresh rate than under high refresh rate. However, the excessive blanking time will exacerbate the influence of the leakage of the display panel 10, so that the overall brightness of the panel is reduced. When the display device is switched back and forth between high refresh rate and low refresh rate in a short time according to a certain rule, the brightness difference under different refresh rates will cause the panel to flicker, which seriously affects the display quality.

[0059] Therefore, the embodiment of the present application provides a driving method of a display panel, which is applied to a processor 20. By repeatedly refreshing picture information of a current frame image in a blank time length of a low frame rate, the blank time length of the display panel under the low refresh rate can be greatly shortened, the problem of serious leakage under the low refresh rate can be improved, thereby improving flicker of the display panel 10 and improving display effect of the display panel 10.

[0060] The display panel 10 of the embodiment of the present application can have multiple refresh rates, and the multiple refresh rates include a first refresh rate and a second refresh rate, and the second refresh rate is less than the first refresh rate.

[0061] The first refresh rate and the second refresh rate are both directly adjusted according to a required display mode when the display panel 10 is driven. For example, the first refresh rate can be a highest refresh rate of the display panel 10. The second refresh rate is the same as a current frame rate, and the current frame rate of multiple frame images is less than the first refresh rate of the display panel 10. That is, the refresh rate of the display panel 10 can be switched from the first refresh rate to the second refresh rate.

[0062] Please refer to Figure 2 , Figure 2 The display timing signal when the refresh rate of the display panel in the embodiment of the present application is switched from the first refresh rate to the second refresh rate is shown. For example, pictures A, B and C are pictures displayed at the first refresh rate, and the frame interval of each picture is a first time length T1, wherein the blank time length (Vertical Blanking Interval, referred to as V-blanking) during display is T v1 . Pictures D, E and F are pictures displayed at the second refresh rate, and the frame interval of each picture is a second time length T2, wherein the blank time length during display is T v2 .

[0063] It can be understood that the display time length of the display panel for scanning and displaying one frame image is the same under different refresh rates, but the blank time length is different, and the sum of the display time length and the blank time length is the frame interval under the corresponding refresh rate.

[0064] Please refer to Figure 3 , Figure 3 The overall flow of the driving method of the display panel in the embodiment of the present application is shown. The driving method of the display panel includes the following steps:

[0065] Step 301: Control the display panel to display a current frame image at a first refresh rate.

[0066] Specifically, the current frame image is any one of multiple frame images.

[0067] Step 302: generating an inserted image located after the current frame image based on the first refresh rate, the second refresh rate and the current frame image.

[0068] In some embodiments, the inserted image corresponding to each current frame image can be generated by the following steps:

[0069] Step one, obtaining a first time length T1 based on the first refresh rate.

[0070] Specifically, the first time length T1 is the reciprocal of the first refresh rate.

[0071] Step two, obtaining a second time length T2 based on the second refresh rate.

[0072] Specifically, the second time length T2 is the reciprocal of the second refresh rate.

[0073] Step three, determining an interval time length ΔT as the difference between the second time length T2 and the first time length T1.

[0074] Specifically, the interval time length ΔT=T2-T1.

[0075] Step four, generating at least one inserted image based on the multiple relationship between the interval time length ΔT and the first time length T1.

[0076] In some examples, the at least one inserted image includes a first image and / or a second image, the first image being the same as the current frame image, and the second image being a partial image of the current frame image, for example, the second image can be a front half frame image of the current frame image.

[0077] Then step four can be executed in the following way:

[0078] First, if the interval time length ΔT and the first time length T1 satisfy ΔT=N×T1, and N is a positive integer, then N first images arranged in sequence are generated.

[0079] Second, if the interval time length ΔT and the first time length T1 satisfy ΔT=K×T1+M×T1, and K is a natural number, 0<M<1, then K first images arranged in sequence and one second image are generated.

[0080] That is to say, according to the multiple relationship between the interval time length ΔT and the first time length T1, the at least one inserted image can be only one or more first images arranged in sequence, or only one second image, or one or more first images arranged in sequence and one second image located after the last first image.

[0081] Please refer to Figure 4 , Figure 4An example of a display timing signal of a display panel in the embodiments of the present application is shown. Taking a current frame image as D, an interval duration ΔT and a first duration T1 satisfy ΔT = 1 × T1 + 0.5 × T1 as an example, a first image D1 and a second image D2 are generated, wherein the display data of the first image D1 is completely the same as that of the current frame image D, and the second image D2 is the front half frame display data of the current frame image D.

[0082] In some embodiments, the second image can be determined in the following manner:

[0083] Firstly, a first display duration T1 of the display panel under a first refresh rate is obtained s1 , and a blank duration T v1 .

[0084] Specifically, the display duration of the display panel for scanning and displaying one frame of image under the first refresh rate is determined as the first display duration T s1 , and the blank duration T v1 is the difference between the first duration T1 and the first display duration T s1 .

[0085] Secondly, a second display duration T s2 is obtained based on a third duration T3 and the blank duration T v1 .

[0086] The third duration T3 is M × T1.

[0087] Specifically, the difference between the third duration T3 and the blank duration T v1 is determined as the second display duration T s2 . That is, the data amount of the image that can be displayed by the remaining third duration T3 can be obtained.

[0088] Thirdly, an image corresponding to a part of the current frame image is obtained based on the second display duration T s2 and the first display duration T s1 , and a second image D2 is generated.

[0089] Specifically, the data proportion of the second image to the current frame image can be obtained according to the ratio of the second display duration T s2 to the first display duration T s1 , and then the corresponding data of the current frame image can be obtained directly according to the normal scanning order. It can be understood that the scanning order of the second image D2 and the current frame image D is the same, for example, both start from the first row and the first column of pixels and scan line by line.

[0090] It can be understood that originally after switching the refresh rate, the display panel should display the current frame image at the second refresh rate, but the embodiment of the present application shortens the blank time by inserting the image, so that after the display panel displays the current frame image at the first refresh rate, the inserted image is continuously displayed.

[0091] Step 303: In the interval time after the current frame image is displayed, the display panel is controlled to display the inserted image, and the interval time is determined based on the first refresh rate and the second refresh rate.

[0092] Specifically, the determination of the interval time ΔT can refer to the relevant discussion in step 302, which will not be repeated here.

[0093] In some embodiments, the display panel can be controlled to display each first image in sequence at the first refresh rate, and / or the display panel can be controlled to display the second image at the third refresh rate, and the third refresh rate is obtained based on the third time length.

[0094] Specifically, the third refresh rate is the reciprocal of the third time length.

[0095] If the at least one inserted image is only one or more first images arranged in sequence, after the display panel displays the current frame image at the first refresh rate, the first images are continuously displayed in sequence at the first refresh rate, and then the next frame image is displayed at the second refresh rate. If the at least one inserted image is only one second image, after the display panel displays the current frame image at the first refresh rate, the second image is displayed at the third refresh rate, and then the next frame image is displayed at the second refresh rate. If the at least one inserted image is one or more first images arranged in sequence and one second image located after the last first image, after the display panel displays the current frame image at the first refresh rate, the first images are continuously displayed in sequence at the first refresh rate, then the second image is displayed at the third refresh rate, and finally the next frame image is displayed at the second refresh rate. For example, please continue to refer to Figure 4 , the inserted images corresponding to the current frame images D, E, and F are the first images D1, E1, and F1, and the second images D2, E2, and F2, respectively, and the output signal (i.e., Data output) finally displayed by the display panel is the current frame image D, the first image D1, the second image D2, the current frame image E, the first image E1, the second image E2, the current frame image F, the first image F1, and the second image F2 in sequence.

[0096] Step 304: After the interval time, the display panel is controlled to display the next frame image at the second refresh rate.

[0097] Specifically, the next frame image is an image located at a next frame of the current frame image. For the next frame image, the insertion image corresponding to the next frame image can be continuously generated and displayed through steps 302 and 303, which will not be described herein again.

[0098] It can be understood that, if the first refresh rate is 120 Hz and the second refresh rate is 78 Hz, the final display is a frame image of 120 Hz and an insertion image of half frame 120 Hz, that is, the method of the embodiment of the application is equivalent to splitting a frame image of 78 Hz into a first frame complete 120 Hz image data and a second frame half frame 120 Hz image data for display, so as to realize a 78 Hz fixed refresh rate image by a 120 Hz fixed refresh rate display device.

[0099] In actual application, in order to avoid the characteristic damage caused by the continuous fixation of liquid crystal molecules in the same direction, the display device can perform polarity inversion of the driving voltage per frame through a POL signal (Polarity control signal), that is, the polarity of the driving voltage is controlled to be inverted per frame through the POL signal.

[0100] Please refer to Figure 5 , Figure 5 It is shown that Figure 4 the POL signal timing corresponding to the display timing signal in some examples. In some examples, before performing step 303 of controlling the display panel to display the insertion image, the driving method of the embodiment of the application can further include performing polarity inversion on each of the first image and the second image, so that each of the first image and the second image is opposite in polarity to the adjacent previous image.

[0101] Applicants have found through experiments and research that, since the POL signal is frame inversion, in the case where at least one insertion image includes a second image, if the polarity of the next frame image is still controlled to be opposite to the polarity of the second image, the display area of the lower half of the display panel cannot be refreshed when the second image is displayed, and thus the polarity is not inverted, so that the lower half area of the display panel is inverted once every other frame, and the polarity remains the same when the next frame image is displayed. For example, when the second image D2 is refreshed, it is equivalent to the display image being refreshed to half, the next frame image E comes in, the display device stops refreshing the remaining part of the display image, and starts refreshing the next frame image E from the beginning. Because the POL signal is inverted per frame, the POL signal is switched before the remaining part of the display image is refreshed, resulting in that the first image D1 and the next frame image E are displayed in the front and back two frames of the remaining part of the display image, and the polarities of the two frames are the same, so that the time durations of the two polarities of the remaining part of the display image are different, which is easy to cause an image sticking (IS) problem and affect the display.

[0102] Therefore, the embodiment of the present application further eliminates the residual image problem that may occur in the improvement process of the display panel flicker problem by dynamically adjusting the polarity inversion of the POL signal, so as to further optimize the display quality.

[0103] Referring to Figure 6 , Figure 6 Another example of the POL signal timing in the embodiment of the present application is shown. In another example, in the case of polarity inversion of each first image and second image, before the display panel is controlled to display the next frame image at the second refresh rate in step 304, the driving method of the embodiment of the present application can further include, in the case of at least one inserted image including the second image (display timing signal 1), controlling the polarity of the next frame image to be the same as that of the second image (POL signal 1). In the case of at least one inserted image including only the first image (display timing signal 2), polarity inversion is performed on the next frame image, so that the polarity of the next frame image is opposite to that of the adjacent previous first image (POL signal 2).

[0104] In the above manner, the second image A2 and the next frame image B displayed in the lower half of the display screen have different polarities, and the upper half of the display screen has the same polarity of the second image A2 and the next frame image B, but the polarity of the second image B2 is inverted, so that the IS problem is avoided as a whole.

[0105] Referring to Figure 7 , Figure 7 Another example of the POL signal timing in the embodiment of the present application is shown. In another example, in the case of polarity inversion of each first image and second image, before the display panel is controlled to display the next frame image at the second refresh rate in step 304, the driving method of the embodiment of the present application can further include, in the case of at least one inserted image including the second image (display timing signal 1), controlling the polarity of the next frame image to be the same as that of the second image (POL signal 1). In the case of at least one inserted image including only the first image (display timing signal 2), polarity inversion is performed on the next frame image, so that the polarity of the next frame image is opposite to that of the adjacent previous first image (POL signal 2).

[0106] In the above manner, the second image A2 and the next frame image B displayed in the lower half of the display screen have different polarities, and the upper half of the display screen has the same polarity of the second image A2 and the next frame image B, but the polarity of the second image B2 is inverted, so that the IS problem is avoided as a whole.

[0107] In some embodiments, the level of the polarity control signal POL signal can be controlled to switch from a first level to a second level, or from the second level to the first level, to realize polarity switching. Exemplarily, the first level can be a high level, used to represent a first polarity, and the second level can be a low level, used to represent a second polarity, the first polarity and the second polarity being opposite to each other. Exemplarily, the first polarity is a positive polarity, and the second polarity is a negative polarity.

[0108] It can be understood that the driving method of the embodiments of the present application can improve the picture flicker of the VRR display panel by repeatedly sending the picture information of the current frame in the blank duration of the second refresh rate, and further eliminate the IS problem in the flicker improvement process by dynamically adjusting the POL polarity signal to ensure that the same position of the picture has positive and negative polarity reversal instead of being fixed to one polarity, thereby greatly improving the display quality.

[0109] Correspondingly, please refer to Figure 8 , Figure 8 A structural diagram of a driving device of a display panel of an embodiment of the present application is shown. The driving device of the display panel provided by the embodiment of the present application includes a first display control module 801, an inserted image generation module 802, and a second display control module 803.

[0110] The first display control module 801 is configured to control the display panel to display a current frame image at a first refresh rate.

[0111] The inserted image generation module 802 is configured to generate an inserted image located after the current frame image based on the first refresh rate, a second refresh rate, and the current frame image.

[0112] The second display control module 803 is configured to control the display panel to display the inserted image in an interval duration after the current frame image is displayed, the interval duration being determined based on the first refresh rate and the second refresh rate.

[0113] The first display control module 801 is further configured to control the display panel to display a next frame image at the second refresh rate after the interval duration, the next frame image being an image of a frame located next to the current frame image.

[0114] In some embodiments, the inserted image generation module 802 is specifically configured to:

[0115] obtain a first duration T1 based on the first refresh rate.

[0116] obtain a second duration T2 based on the second refresh rate.

[0117] determine an interval duration ΔT as a difference between the second duration T2 and the first duration T1.

[0118] The at least one inserted image is generated based on a multiple relationship between the interval duration ΔT and the first duration T1.

[0119] In some embodiments, the at least one inserted image includes a first image and / or a second image, the first image being the same as the current frame image, and the second image being a partial image of the current frame image.

[0120] The inserted image generation module 802 is specifically configured to:

[0121] If the interval duration ΔT and the first duration T1 satisfy ΔT=N×T1, and N is a positive integer, then N first images arranged in sequence are generated.

[0122] If the interval duration ΔT and the first duration T1 satisfy ΔT=K×T1+M×T1, and K is a natural number and 0<M<1, then K first images and one second image arranged in sequence are generated.

[0123] In some embodiments, M×T1 is defined as a third duration, and the inserted image generation module 802 is specifically configured to determine the second image by the following steps:

[0124] The first display duration and the blank duration of the display panel under the first refresh rate are obtained.

[0125] The second display duration is obtained based on the third duration and the blank duration.

[0126] Based on the second display duration and the first display duration, an image corresponding to the partial image in the current frame image is obtained, and the second image is generated.

[0127] In some embodiments, M×T1 is defined as a third duration, and the second display control module 803 is specifically configured to:

[0128] The display panel is controlled to display each first image in sequence under the first refresh rate, and / or the second image is displayed under a third refresh rate, the third refresh rate being obtained based on the third duration.

[0129] In some embodiments, before the display panel displays the inserted image, the second display control module 803 is specifically further configured to:

[0130] Each first image and the second image are subjected to polarity inversion, so that each first image and the second image are opposite in polarity to the adjacent previous image.

[0131] In some embodiments, before the display panel displays the next frame image under the second refresh rate, the first display control module 801 is specifically further configured to:

[0132] In the case where the at least one inserted image includes the second image, the polarity of the next frame image is controlled to be the same as the polarity of the second image.

[0133] In a case where the at least one inserted image only includes the first image, the polarity of the next frame image is flipped so that the next frame image is opposite in polarity to the adjacent previous first image.

[0134] In some embodiments, before controlling the display panel to display the inserted image, the second display control module 803 is specifically further configured to:

[0135] Control the polarity of each of the first image and the second image to be the same as the polarity of the current frame image.

[0136] Before controlling the display panel to display the next frame image at the second refresh rate, the first display control module 801 is specifically further configured to:

[0137] Flip the polarity of the next frame image so that the next frame image is opposite in polarity to the adjacent previous image.

[0138] It can be understood that the driving apparatus of the display panel in the embodiments of the present application not only greatly shortens the blank time of the display panel at a low refresh rate, and improves the problem of serious leakage at a low refresh rate, but also improves the flicker problem of the display panel, and improves the display quality.

[0139] Correspondingly, the display device in the embodiments of the present application can support multiple refresh rates, and can also improve the problem of picture flicker, and has excellent display quality.

[0140] The above describes in detail the driving method, apparatus and display device of the display panel provided in the embodiments of the present application. The principle and implementation manner of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A driving method of a display panel, characterized by, The display panel has a plurality of refresh rates, and the plurality of refresh rates include a first refresh rate and a second refresh rate, and the second refresh rate is less than the first refresh rate. The driving method comprises: controlling the display panel to display a current frame image at the first refresh rate; generating an inserted image after the current frame image based on the first refresh rate, the second refresh rate and the current frame image; controlling the display panel to display the inserted image within an interval duration after the current frame image is displayed, and the interval duration is determined based on the first refresh rate and the second refresh rate; controlling the display panel to display a next frame image at the second refresh rate after the interval duration, and the next frame image is an image of a next frame after the current frame image.

2. The driving method of a display panel according to claim 1, wherein The driving method comprises: obtaining a first duration T1 based on the first refresh rate; obtaining a second duration T2 based on the second refresh rate; determining the interval duration ΔT as a difference between the second duration T2 and the first duration T1; generating at least one inserted image based on a multiple relationship between the interval duration ΔT and the first duration T1.

3. The driving method of the display panel according to claim 2, wherein The at least one inserted image comprises a first image and / or a second image, the first image is the same as the current frame image, and the second image is a partial image of the current frame image. The driving method comprises: if the interval duration ΔT and the first duration T1 satisfy ΔT=N×T1, and N is a positive integer, then N first images arranged in sequence are generated; if the interval duration ΔT and the first duration T1 satisfy ΔT=K×T1+M×T1, and K is a natural number, and 0<M<1, then K first images arranged in sequence and one second image are generated.

4. The driving method of a display panel according to claim 3, wherein The M×T1 is defined as a third duration, and the second image is determined by the following steps: obtaining a first display duration and a blank duration of the display panel at the first refresh rate; obtaining a second display duration based on the third duration and the blank duration; obtaining an image corresponding to a part of the current frame image based on the second display duration and the first display duration, and generating the second image.

5. The driving method of the display panel according to claim 3, wherein The M×T1 is defined as a third duration, and the control of the display panel to display the inserted image comprises: controlling the display panel to display each first image at the first refresh rate in sequence, and / or controlling the display panel to display the second image at a third refresh rate, and the third refresh rate is obtained based on the third duration.

6. The driving method of a display panel according to claim 3, wherein Before controlling the display panel to display the inserted image, the driving method further comprises: performing polarity inversion on each first image and the second image, so that each first image and the second image have opposite polarity to an adjacent previous image.

7. The driving method of the display panel according to claim 6, wherein Before controlling the display panel to display a next frame image at the second refresh rate, the driving method further comprises: in a case that at least one of the inserted images comprises the second image, controlling a polarity of the next frame image to be the same as a polarity of the second image; in a case that at least one of the inserted images comprises only the first image, performing polarity inversion on the next frame image, so that the next frame image is opposite to a polarity of a previous adjacent first image.

8. The driving method of the display panel according to claim 3, wherein Before controlling the display panel to display the inserted image, the driving method further comprises: controlling a polarity of each of the first image and the second image to be the same as a polarity of the current frame image; Before controlling the display panel to display a next frame image at the second refresh rate, the driving method further comprises: performing polarity inversion on the next frame image, so that the next frame image is opposite to a polarity of a previous adjacent image.

9. A driving device of a display panel, characterized by comprising: The display panel has a plurality of refresh rates, and the plurality of refresh rates comprise a first refresh rate and a second refresh rate, the second refresh rate being less than the first refresh rate; The driving apparatus comprises: a first display control module, configured to control the display panel to display a current frame image at the first refresh rate; an inserted image generation module, configured to generate, based on the first refresh rate, the second refresh rate and the current frame image, an inserted image located after the current frame image; a second display control module, configured to control the display panel to display the inserted image within an interval duration after the current frame image is displayed, the interval duration being determined based on the first refresh rate and the second refresh rate. The first display control module is further configured to control the display panel to display a next frame image at the second refresh rate after the interval duration, the next frame image being an image located in a next frame of the current frame image.

10. A display device, characterized by comprising: The display panel and the processor, wherein the processor drives the display panel to display a picture by using the driving method of the display panel according to any one of claims 1-8, or by using the driving apparatus of the display panel according to claim 9.

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