CN117765891A - Display panel driving method and device and display equipment - Google Patents

Abstract

The application discloses a driving method and device of a display panel and display equipment. The display panel has a plurality of refresh rates including a first refresh rate and a second refresh rate, the second refresh rate being less than the first refresh rate, the driving method comprising: controlling the display panel to display the current frame image at a first refresh rate; generating an insertion 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 after the current frame image is displayed, wherein the interval time is determined based on the first refresh rate and the second refresh rate; after the interval duration, the display panel is controlled to display the next frame of image at the second refresh rate, wherein the next frame of image is the image of the next frame of the current frame of image. The application can generate the insertion image after the current frame image under the low frame rate so as to repeatedly refresh the picture information of the current frame image, thereby improving the flickering problem of the display panel and the display quality.

Description

Display panel driving method and device and display equipment

Technical Field

the present application relates to the field of display technologies, and in particular, to a driving method and apparatus for a display panel, and a display device.

Background

the liquid crystal display device with the VRR (Variable Refresh Rate) technology can adopt different refresh rates according to different application scenes, and the charging time of each frame under different refresh rates is the same, wherein the difference is that the blank (blanking) time of each frame is different, and the blank time of each frame under a low refresh rate is longer than the blank time of each frame under a high refresh rate, so that the influence of electric leakage of the display panel can be aggravated, and the overall brightness of the panel is reduced. When the display device is switched back and forth between a high refresh rate and a low refresh rate in a short time according to a certain rule, the brightness difference under different refresh rates can cause the panel to flicker, and the display quality is seriously affected.

Disclosure of Invention

the embodiment of the application provides a driving method and device of a display panel and display equipment, which are used for improving the flickering problem when the refresh rate of the display panel is switched and improving the display quality.

in order to solve the technical problems, the embodiment of the application discloses the following technical scheme:

in a first aspect, a driving method of a display panel is provided, the display panel has a plurality of refresh rates, the plurality of refresh rates includes a first refresh rate and a second refresh rate, and the second refresh rate is smaller than the first refresh rate; the driving method includes:

Controlling the display panel to display the current frame image at the first refresh rate;

generating an insertion 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 duration after the current frame image is displayed, wherein the interval duration is determined based on the first refresh rate and the second refresh rate;

And after the interval duration, controlling the display panel to display a next frame of image at the second refresh rate, wherein the next frame of image is an image of a next frame of the current frame of image.

With reference to the first aspect, the generating an insertion image located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image includes:

Based on the first refresh rate, a first time length T is acquired₁；

acquiring a second duration T based on the second refresh rate₂；

The second time period T₂And the first time length T₁Is determined as the interval duration deltat;

based on the interval duration DeltaT and the first duration T₁Generating at least one of the interpolated images.

With reference to the first aspect, at least one of the insertion images includes a first image, and/or a second image, where the first image is the same as the current frame image, and the second image is a partial image of the current frame image;

said time interval is based on said time interval delta T and said first time T₁generating at least one of the interpolated images, comprising:

if the interval duration DeltaT is equal to the first duration T₁satisfying Δt=n×t₁and N is a positive integer, generating N first images which are sequentially arranged;

if the interval duration DeltaT is equal to the first duration T₁Satisfying Δt=k×t₁+M×T₁and K is a natural number, 0< M <1, and K first images and one second image which are sequentially arranged are generated.

With reference to the first aspect, the M×T is defined₁for a third duration, the second image is determined by:

Acquiring a first display duration and a blank duration of the display panel at the first refresh rate;

acquiring a second display time length based on the third time length and the blank time length;

and acquiring an image of a corresponding part in the current frame image based on the second display time length and the first display time length, and generating the second image.

With reference to the first aspect, the M×T is defined₁for a third duration, the controlling the display panel to display the insertion image includes:

and controlling the display panel to display the first images in sequence at the first refresh rate, and/or controlling the display panel to display the second images at a third refresh rate, wherein the third refresh rate is acquired based on the third duration.

with reference to the first aspect, before controlling the display panel to display the insertion image, the driving method further includes:

And reversing the polarity of each first image and each second image so that each first image and each second image are opposite to the polarity of the adjacent previous image.

With reference to the first aspect, before controlling the display panel to display a next frame of image at the second refresh rate, the driving method further includes:

Controlling the polarity of the next frame image to be the same as the polarity of the second image in the case that at least one of the insertion images includes the second image;

In the case where at least one of the insertion images includes only the first image, the polarity of the next frame image is inverted so that the polarity of the next frame image is opposite to that of the immediately preceding first image.

with reference to the first aspect, before controlling the display panel to display the insertion image, the driving method further includes:

Controlling the polarity of each of the first image and the second image to be the same as the polarity of the current frame image;

Before controlling the display panel to display a next frame of image at the second refresh rate, the driving method further includes:

and reversing the polarity of the next frame image so that the polarity of the next frame image is opposite to that of the adjacent previous image.

In a second aspect, a driving apparatus of a display panel is provided, 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 less than the first refresh rate; the driving device includes:

the first display control module is used for controlling the display panel to display the current frame image at the first refresh rate;

An insertion image generation module, configured to generate an insertion image located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image;

A second display control module, configured to control the display panel to display the insertion image within an interval duration after the current frame image is displayed, where the interval duration is 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, where the next frame image is an image located in a next frame of the current frame image.

In a third aspect, there is provided a display device comprising a display panel and a processor for driving the display panel to perform picture display using the driving method of the display panel according to any one of the first aspect, or using the driving apparatus of the display panel according to the second aspect.

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

compared with the prior art, the driving method of the display panel has the advantages that the display panel is provided with a plurality of refresh rates, the refresh rates comprise a first refresh rate and a second refresh rate, and the second refresh rate is smaller than the first refresh rate; the driving method comprises the following steps: controlling the display panel to display the current frame image at a first refresh rate; generating an insertion 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 after the current frame image is displayed, wherein the interval time is determined based on the first refresh rate and the second refresh rate; after the interval duration, the display panel is controlled to display the next frame of image at the second refresh rate, wherein the next frame of image is the image of the next frame of the current frame of image. The driving method provided by the application can generate the insertion image after the current frame image at a low frame rate so as to repeatedly refresh the picture information of the current frame image, thereby not only greatly shortening the blank time of the display panel at the low refresh rate and improving the serious electric leakage problem at the low refresh rate, but also improving the flickering problem of the display panel and improving the display quality.

The driving device of the display panel can not only improve the problem of serious electric leakage under the condition of low refresh rate, but also improve the flickering problem of the display panel and improve the display quality.

The display device can support multiple refresh rates, can improve the problem of picture flickering, and has excellent display image quality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a display timing signal for switching a refresh rate of a display panel from a first refresh rate to a second refresh rate according to an embodiment of the present application;

FIG. 3 is a schematic overall flow chart of a driving method of a display panel according to an embodiment of the application;

FIG. 4 is a schematic diagram illustrating display timing signals of a display panel according to an embodiment of the application;

FIG. 5 is a schematic diagram showing an example of the timing of the POL signals corresponding to the timing signals shown in FIG. 4;

FIG. 6 is a schematic diagram of another exemplary POL signal timing in accordance with an embodiment of the application;

FIG. 7 is a schematic diagram of yet another exemplary POL signal timing in accordance with an embodiment of the application;

Fig. 8 is a schematic structural diagram of a driving device of a display panel according to an embodiment of the application.

reference numerals:

10-a display panel; a 20-processor; 801-a first display control module; 802-an insert image generation module; 803-a second display control module.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "plurality" means two or more, and at least one means one, two or more, unless explicitly defined otherwise.

Referring to fig. 1, fig. 1 illustrates a structure of a display device according to an embodiment of the present application. The display device includes a display panel 10 and a processor 20, the display panel 10 is used for displaying pictures, the display panel 10 is a panel carrying VRR technology, and a plurality of refresh rates can be provided. The processor 20 may be configured to send a driving signal to the display panel 10 to control the display panel 10 to display images at different refresh rates, where the refresh rate is the speed at which the images on the screen are updated when the display panel 20 is operated, i.e. the number of images on the screen occur per second, e.g. 60 images occur per second, and the refresh rate is 60 Hz. The processor 20 may include a Timing Controller (TCON) for providing a timing signal and a driving control device (Driver IC) for transmitting a driving signal to the display panel 10 based on the timing signal.

Display devices are typically fixed at the highest refresh rate during operation, but under certain conditions, display devices are often required to display at lower refresh rates. For example, for a display device with VRR technology, in some application scenarios, the response speed of a dynamic picture will generally need to be adjusted, which uses FreeSync technology or Gsync technology, that is, adaptive synchronization to implement a dynamic refresh rate technology, so as to achieve synchronization between the refresh rate of the display and the frame rate of the graphics card. The charging time per frame is the same at different refresh rates, except that the blanking time per frame is different, and the blanking time per frame at low refresh rates is longer than the blanking time per frame at high refresh rates. However, too long a blank time may exacerbate the leakage effect 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 a high refresh rate and a low refresh rate in a short time according to a certain rule, the brightness difference at different refresh rates can cause Flicker (Flicker) of the panel, and seriously affect the display quality.

In view of this, the embodiment of the application provides a driving method of a display panel, which is applied to a processor 20, and can greatly shorten the blank time of the display panel at a low refresh rate and improve the problem of serious leakage at the low refresh rate by repeatedly refreshing the picture information of the current frame image in the blank time of the low frame rate, thereby improving the flicker of the display panel 10 and improving the display effect of the display panel 10.

the display panel 10 of embodiments of the present application may have a plurality of refresh rates including a first refresh rate and a second refresh rate, the second refresh rate being less than the first refresh rate.

Wherein both the first refresh rate and the second refresh rate are directly adjusted according to a desired display mode when driving the display panel 10. Illustratively, the first refresh rate may be a highest refresh rate of the display panel 10. The second refresh rate is the same as the current frame rate, and the current frame rate of the plurality of frame images is less than the first refresh rate of the display panel 10. That is, the refresh rate of the display panel 10 may be switched from the first refresh rate to the second refresh rate.

Referring to fig. 2, fig. 2 illustrates a display timing signal for switching a refresh rate of a display panel from a first refresh rate to a second refresh rate in an embodiment of the application. The picture A, B, C is illustratively a picture displayed at a first refresh rate, each picture having a frame interval of a first duration T₁wherein the blank time (Vertical Blanking Interval, V-blank) at the time of display is T_v1. The frames D, E, F are displayed at a second refresh rate with each frame having a frame interval of a second duration T₂Wherein the blank time length during display is T_v2。

it can be understood that, under different refresh rates, the display durations of the display panel for scanning and displaying one frame of image are the same, but the blank durations are different, and the sum of the display durations and the blank durations is the frame interval under the corresponding refresh rate.

Referring to fig. 3, fig. 3 illustrates an overall flow of a driving method of a display panel according to an embodiment of the application. The driving method of the display panel comprises the following steps:

step 301: the display panel is controlled to display the current frame image at a first refresh rate.

Specifically, the current frame image is any one of a plurality of frame images.

step 302: an interpolated image is generated that is located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image.

In some embodiments, the interpolated image for each current frame image may be generated by:

Step one, based on a first refresh rate, acquiring a first time length T₁。

specifically, a first time length T₁Is the inverse of the first refresh rate.

Step two, based on a second refresh rate, obtaining a second duration T₂。

Specifically, the second time period T₂Is the inverse of the second refresh rate.

step three, the second duration T₂And a first time length T₁is determined as the interval duration deltat.

Specifically, the interval duration Δt=the second duration T₂-a first time period T₁。

Step four, based on the interval duration delta T and the first time duration T₁At least one interpolated image is generated.

In some examples, the at least one interpolated image includes a first image that is the same as the current frame image and/or a second image that is a partial image of the current frame image, e.g., the second image may be a first half frame image of the current frame image.

Step four may be performed by:

First, if the interval duration DeltaT is equal to the first duration T₁satisfying Δt=n×t₁and N is a positive integer, N first images which are sequentially arranged are generated.

second, if the interval time is DeltaT and the first time is T₁Satisfying Δt=k×t₁+M×T₁and K is a natural number, 0< M <1, and K first images and one second image which are sequentially arranged are generated.

That is, according to the interval duration DeltaT and the first duration T₁The at least one interpolated image may be only one or more sequentially arranged first images, only one second image, or one or more sequentially arranged first images and one second image located after the last first image.

referring to fig. 4, fig. 4 illustrates an example of display timing signals of a display panel according to an embodiment of the application. Taking the current frame image as D, and the interval duration delta T and the first duration T₁Satisfy Δt=1×t₁+0.5×T₁for example, a first image D1 and a second image D2 are generated, wherein the first image D1 is identical to the display data of the current frame image D, and the second image D2 is the first half frame display data of the current frame image D.

In some embodiments, the second image may be determined by:

The first step, a first display duration T of the display panel at a first refresh rate is obtained_s1And a blank time length T_v1。

Specifically, the display duration of the display panel for scanning and displaying one frame of image at the first refresh rate can be determined as the first display duration T_s1Blank duration T_v1I.e. the first time length T₁And a first display time length T_s1Is a difference in (c).

A second step, based on a third time period T₃And a blank time length T_v1Acquiring a second display duration T_s2。

wherein the third time period T₃Is M x T₁。

Specifically, the third time period T₃and blank time length T_v1is determined as the second display duration T_s2. That is, the remaining third time period T may be obtained₃the amount of data of the image that can be displayed.

Third step, based on the second display time period T_s2And a first display duration T_s1an image of a corresponding portion in the current frame image is acquired, and a second image D2 is generated.

Specifically, according to the second display duration T_s2And a first display time length T_s1and the ratio of the second image to the current frame image can be obtained, so that corresponding data can be directly obtained from the data of the current frame image according to the normal scanning sequence. It will be appreciated that the second image D2 is scanned in the same order as the current frame image D, for example, starting from the pixels of the first row and the first column, and scanning line by line.

it can be understood that after the refresh rate is switched, the display panel should display the current frame image at the second refresh rate, but the embodiment of the application shortens the blank time by inserting the image, so that the display panel continues to display the inserted image after displaying the current frame image at the first refresh rate.

Step 303: and controlling the display panel to display the inserted image within an interval time after the current frame image is displayed, wherein the interval time is determined based on the first refresh rate and the second refresh rate.

specifically, the determination of the interval duration Δt may refer to the related discussion in step 302, and will not be described herein.

in some embodiments, the display panel may be controlled to display the first images sequentially at a first refresh rate and/or the display panel may be controlled to display the second images at a third refresh rate, the third refresh rate being derived based on a third duration.

Specifically, the third refresh rate is the inverse of the third duration.

If at least one of the inserted images is only one or more first images which are sequentially arranged, the display panel is controlled to display the current frame image at a first refresh rate, then sequentially display each first image at the first refresh rate, and then display the next frame image at a second refresh rate. If the at least one inserted image is only one second image, the display panel is controlled to display the current frame image at the first refresh rate, then display the second image at the third refresh rate, and then display the next frame image at the second refresh rate. If at least one inserted image is one or more first images and one second image positioned behind the last first image, the display panel is controlled to display the current frame image at a first refresh rate, then the first images are continuously displayed at the first refresh rate in sequence, then the second image is displayed at a third refresh rate, and finally the next frame image is displayed at the second refresh rate. For example, with continued reference to fig. 4, the insertion images corresponding to the current frame image D, E, F are the first images D1, E1 and F1, and the second images D2, E2 and F2, respectively, and the output signals (i.e., data output) finally displayed by the display panel are 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.

step 304: after the interval period, the display panel is controlled to display the next frame of image at the second refresh rate.

specifically, the next frame image is an image of the next frame located in the current frame image. For the next frame image, the generating and displaying of the insertion image corresponding to the next frame image may be continued through steps 302 and 303, which will not be described herein.

It can be understood that, if the first refresh rate is 120Hz and the second refresh rate is 78Hz, then the frame image of 120Hz and the insertion image of 120Hz half frame are finally displayed, that is, the method of the embodiment of the application is equivalent to splitting the frame image of 78Hz into the complete 120Hz image data of the first frame and the 120Hz image data of the second frame half frame for displaying, so that the display device with the fixed refresh rate of 120Hz realizes the image with the fixed refresh rate of 78 Hz.

In practical applications, the display device may perform polarity inversion of the driving voltage every frame by the POL signal (Polarity control signal ), i.e., control the polarity of the driving voltage to be inverted every frame by the POL signal, in order to avoid the characteristic damage caused by the continuous fixation of the liquid crystal molecules in the same direction.

Referring to fig. 5, fig. 5 illustrates an example of the timing of the POL signal corresponding to the display timing signal of fig. 4. In some examples, before the step 303 is performed to control the display panel to display the insertion image, the driving method of the embodiment of the present application may further include polarity-inverting each of the first image and the second image such that each of the first image and the second image is opposite to the polarity of the adjacent previous image.

The applicant found through experiments and researches that, since the POL signal is frame-flipped, if the polarity of the next frame image is controlled to be opposite to that of the second image in the case that at least one of the inserted images includes the second image, the polarity of the second image is still kept the same when the next frame image is displayed because the display area of the lower half of the display panel cannot be refreshed when the second image is displayed and the polarity is not flipped. For example, when the second image D2 is refreshed, which corresponds to the next frame image E coming in just after half of the refresh of the display screen, the display device stops the refresh of the remaining portion of the display screen, and refreshes the next frame image E from the beginning. Because the POL signal IS turned over one frame, the remaining part of the display screen IS already switched when the POL signal IS not refreshed, so that the two frames before and after the refresh of the remaining part of the display screen are the first Image D1 and the next Image E, and the polarities of the two frames are exactly the same, the duration of the two polarities of the remaining part of the display screen will be different, and the problem of Image Sticking (IS) will be easily generated, and the display will be affected.

Therefore, the embodiment of the application further eliminates the ghost problem possibly occurring in the process of improving the flicker problem of the display panel by dynamically adjusting the polarity inversion of the POL signal, so as to further optimize the display quality.

Referring to fig. 6, fig. 6 illustrates another example of the timing of the POL signal in an embodiment of the application. In other examples, in the case where each of the first image and the second image is reversed in polarity, the driving method of the embodiment of the present application may further include controlling the polarity of the next frame image to be the same as the polarity of the second image (POL signal 1) in the case where at least one of the interposed images includes the second image (display timing signal 1) before controlling the display panel to display the next frame image at the second refresh rate in the step 304 is performed. In the case where at least one of the insertion images includes only the first image (display timing signal 2), the polarity of the next frame image is inverted so that the polarity of the next frame image is opposite to the polarity of the immediately preceding first image (POL signal 2).

By the above method, the second image A2 and the next frame image B displayed in sequence at the lower half part of the display screen have different polarities, and the polarity of the second image A2 and the next frame image B at the upper half part of the display screen IS the same, but the polarity of the second image B2 IS still inverted, so that the IS problem IS avoided as a whole.

Referring to fig. 7, fig. 7 illustrates yet another example of the timing of the POL signal in an embodiment of the application. In still other examples, the driving method of the embodiment of the present application may further include controlling the polarity of each of the first image and the second image to be the same as the polarity of the current frame image (POL signal 3) before controlling the display panel to display the insertion image in the performing step 303. Before performing step 304 to control the display panel to display the next frame image at the second refresh rate, the driving method according to an embodiment of the present application may further include reversing the polarity of the next frame image so that the polarity of the next frame image is opposite to the polarity of the adjacent previous image.

By the method, the total time of positive polarity and negative polarity at all positions in the display screen IS the same, so that the IS problem IS avoided.

In some embodiments, the level of the polarity control signal POL signal may be controlled to switch from the first level to the second level, or from the second level to the first level, to achieve the polarity switching. Illustratively, the first level may be a high level for characterizing a first polarity and the second level may be a low level for characterizing a second polarity, the first and second polarities being opposite to each other. Illustratively, the first polarity is a positive polarity and the second polarity is a negative polarity.

It can be understood that, in the driving method of the embodiment of the application, the picture information of the current frame IS repeatedly sent in the blank time of the second refresh rate to improve the picture flicker of the VRR display panel, and in addition, the POL polarity signal IS dynamically adjusted to ensure that the positive and negative polarities of the same position of the picture are turned instead of being fixed, so that the IS problem in the flicker improvement process IS further eliminated, and the display quality can be greatly improved.

accordingly, referring to fig. 8, fig. 8 illustrates a structure diagram of a driving apparatus of a display panel according to an embodiment of the application. The driving device of the display panel provided by the embodiment of the application comprises a first display control module 801, an insertion image generation module 802 and a second display control module 803.

A first display control module 801 for controlling the display panel to display the current frame image at a first refresh rate;

an interpolated image generating module 802, configured to generate an interpolated image located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image;

A second display control module 803 for controlling the display panel to display the insertion image within an interval period after the current frame image is displayed, the interval period being determined based on the first refresh rate and the second refresh rate;

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 period, where the next frame image is an image located next to the current frame image.

in some embodiments, the inset image generation module 802 is specifically configured to:

acquiring a first time length T based on a first refresh rate₁。

based on the second refresh rate, a second time period T is acquired₂。

will be a second time period T₂And a first time length T₁is determined as the interval duration deltat.

Based on the interval duration DeltaT and the first duration T₁At least one interpolated image is generated.

In some embodiments, the at least one interpolated image comprises a first image, the first image being the same as the current frame image, and/or a second image, the second image being a partial image of the current frame image.

The insertion image generation module 802 specifically is configured to:

If the interval duration DeltaT is equal to the first duration T₁satisfying Δt=n×t₁and N is a positive integer, N first images which are sequentially arranged are generated.

If the interval duration DeltaT is equal to the first duration T₁Satisfying Δt=k×t₁+M×T₁and K is a natural number, 0< M <1, and K first images and one second image which are sequentially arranged are generated.

In some embodiments, M T is defined₁For the third duration, the interpolated image generating module 802 is specifically configured to determine the second image by:

And acquiring a first display time length and a blank time length of the display panel at a first refresh rate.

And acquiring a second display time based on the third time and the blank time.

And acquiring an image of a corresponding part in the current frame image based on the second display time length and the first display time length, and generating a second image.

In some embodiments, M T is defined₁For the third duration, the second display control module 803 is specifically configured to:

And controlling the display panel to display each first image in turn at a first refresh rate, and/or controlling the display panel to display a second image at a third refresh rate, the third refresh rate being acquired based on a third duration.

in some embodiments, the second display control module 803 is specifically further configured to, prior to controlling the display panel to display the insertion image:

each of the first image and the second image is reversed in polarity such that each of the first image and the second image is opposite in polarity to an adjacent previous image.

in some embodiments, the first display control module 801 is specifically further configured to, prior to controlling the display panel to display a next frame of image at the second refresh rate:

In the case where the at least one insertion 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.

In the case where the at least one insertion image includes only the first image, the polarity of the next frame image is inverted so that the polarity of the next frame image is opposite to that of the adjacent previous first image.

in some embodiments, the second display control module 803 is specifically further configured to, prior to controlling the display panel to display the insertion image:

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.

The first display control module 801 is specifically further configured to, before controlling the display panel to display the next frame of image at the second refresh rate:

The polarity of the next frame image is reversed so that the next frame image is opposite to the polarity of the adjacent previous image.

It can be understood that the driving device of the display panel in the embodiment of the application not only can greatly shorten the blank time of the display panel under the low refresh rate and improve the serious problem of electric leakage under the low refresh rate, but also can improve the flicker problem of the display panel and improve the display quality.

Accordingly, the display device of the embodiment of the application can support a plurality of refresh rates, can improve the problem of flicker of pictures, and has excellent display image quality.

The foregoing describes in detail a driving method and apparatus for a display panel and a display device provided by the embodiments of the present application, and specific examples are applied to illustrate the principles and embodiments of the present application, where the foregoing examples are only used to help understand the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A driving method of a display panel, wherein the display panel has 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 less than the first refresh rate; the driving method includes:

Controlling the display panel to display the current frame image at the first refresh rate;

generating an insertion 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 duration after the current frame image is displayed, wherein the interval duration is determined based on the first refresh rate and the second refresh rate;

And after the interval duration, controlling the display panel to display a next frame of image at the second refresh rate, wherein the next frame of image is an image of a next frame of the current frame of image.

2. The driving method of the display panel according to claim 1, wherein the generating an insertion image located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image includes:

Based on the first refresh rate, a first time length T is acquired₁；

acquiring a second duration T based on the second refresh rate₂；

The second time period T₂And the first time length T₁Is determined as the interval duration deltat;

based on the interval duration DeltaT and the first duration T₁Generating at least one of the interpolated images.

3. The driving method of a display panel according to claim 2, wherein at least one of the insertion images includes a first image, which is identical to the current frame image, and/or a second image, which is a partial image of the current frame image;

said time interval is based on said time interval delta T and said first time T₁generating at least one of the interpolated images, comprising:

if the interval duration DeltaT is equal to the first duration T₁satisfying Δt=n×t₁and N is a positive integer, generating N first images which are sequentially arranged;

if the interval duration DeltaT is equal to the first duration T₁Satisfying Δt=k×t₁+M×T₁and K is a natural number, 0< M <1, and K first images and one second image which are sequentially arranged are generated.

4. a driving method of a display panel according to claim 3, wherein the mxt is defined₁for a third duration, the second image is determined by:

Acquiring a first display duration and a blank duration of the display panel at the first refresh rate;

acquiring a second display time length based on the third time length and the blank time length;

and acquiring an image of a corresponding part in the current frame image based on the second display time length and the first display time length, and generating the second image.

5. A driving method of a display panel according to claim 3, wherein the mxt is defined₁for a third duration, the controlling the display panel to display the insertion image includes:

and controlling the display panel to display the first images in sequence at the first refresh rate, and/or controlling the display panel to display the second images at a third refresh rate, wherein the third refresh rate is acquired based on the third duration.

6. a driving method of a display panel according to claim 3, wherein before controlling the display panel to display the insertion image, the driving method further comprises:

And reversing the polarity of each first image and each second image so that each first image and each second image are opposite to the polarity of the adjacent previous image.

7. The driving method of a display panel according to claim 6, wherein before controlling the display panel to display a next frame of image at the second refresh rate, the driving method further comprises:

Controlling the polarity of the next frame image to be the same as the polarity of the second image in the case that at least one of the insertion images includes the second image;

In the case where at least one of the insertion images includes only the first image, the polarity of the next frame image is inverted so that the polarity of the next frame image is opposite to that of the immediately preceding first image.

8. A driving method of a display panel according to claim 3, wherein before controlling the display panel to display the insertion image, the driving method further comprises:

Controlling the polarity of each of the first image and the second image to be the same as the polarity of the current frame image;

Before controlling the display panel to display a next frame of image at the second refresh rate, the driving method further includes:

and reversing the polarity of the next frame image so that the polarity of the next frame image is opposite to that of the adjacent previous image.

9. A driving device of a display panel, wherein the display panel has 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 less than the first refresh rate; the driving device includes:

the first display control module is used for controlling the display panel to display the current frame image at the first refresh rate;

An insertion image generation module, configured to generate an insertion image located after the current frame image based on the first refresh rate, the second refresh rate, and the current frame image;

A second display control module, configured to control the display panel to display the insertion image within an interval duration after the current frame image is displayed, where the interval duration is 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, where the next frame image is an image located in a next frame of the current frame image.

10. A display device comprising a display panel and a processor for driving the display panel to display a picture by a driving method of the display panel according to any one of claims 1 to 8, or for driving the display panel according to claim 9.