CN114283728A

CN114283728A - Compensation method and device of display panel and computer readable storage medium

Info

Publication number: CN114283728A
Application number: CN202111634838.2A
Authority: CN
Inventors: 王玉青; 唐韬; 贾琼; 王峥
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-05
Anticipated expiration: 2041-12-29
Also published as: CN114283728B

Abstract

The embodiment of the application provides a compensation method and a compensation device for a display panel and a computer readable storage medium, wherein the display panel comprises a first display area and a second display area, and the method comprises the following steps: the method comprises the steps of obtaining a plurality of first brightness compensation values of different gray scales under different use durations, a plurality of second brightness compensation values of different temperatures and a plurality of third brightness compensation values of different brightness levels in advance; when the current use duration is larger than or equal to a first time duration threshold, determining a first brightness compensation value of a current gray scale, a second brightness compensation value of a current temperature and a third brightness compensation value of a current brightness level under the current use duration; determining a data voltage compensation amount or a duty ratio of a light emitting control signal according to the determined first brightness compensation value, the second brightness compensation value and the third brightness compensation value; and performing brightness compensation on the first display region based on the data voltage compensation amount or the duty ratio of the light emitting control signal. The embodiment of the application can eliminate the brightness attenuation difference between the first display area and the second display area.

Description

Compensation method and device of display panel and computer readable storage medium

Technical Field

The present application relates to the field of display technologies, and in particular, to a compensation method and apparatus for a display panel, and a computer-readable storage medium.

Background

With the rapid development of display panels, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the display panel is concerned more and more in the industry. Currently, a design of an Under-screen Camera (UDC or cpu) is presented, where the Under-screen Camera refers to a front-facing Camera located below a Display Panel and does not affect a Display function of the Display Panel. For example, when the user does not use the front camera, a display region (abbreviated as a UDC region or a cpu region, also called as an auxiliary screen) above the front camera can normally display an image; when the user uses the front camera, the display area above the front camera may not display an image.

However, as the service life of the display panel increases, a brightness difference occurs between the sub-screen of the display panel and the main screen of the display panel (i.e., a display area of the display panel except for the sub-screen), resulting in a poor display effect of the display panel.

Disclosure of Invention

The embodiment of the application provides a compensation method and device for a display panel and a computer readable storage medium, which can eliminate the brightness difference between an auxiliary screen and a main screen and improve the display effect of the display panel.

In a first aspect, an embodiment of the present application provides a compensation method for a display panel, where the display panel includes a first display area and a second display area, and the method includes: the method comprises the steps of obtaining a plurality of first brightness compensation values of different gray scales under different using time lengths, a plurality of second brightness compensation values of different temperatures under different using time lengths and a plurality of third brightness compensation values of different brightness grades under different using time lengths in advance; acquiring the current gray scale, the current temperature, the current brightness level and the current use duration of the first display area; under the condition that the current use duration is greater than or equal to a preset first time threshold, respectively determining a first brightness compensation value corresponding to the current gray scale under the current use duration, a second brightness compensation value corresponding to the current temperature under the current use duration and a third brightness compensation value corresponding to the current brightness level under the current use duration according to a plurality of first brightness compensation values, a plurality of second brightness compensation values and a plurality of third brightness compensation values which are obtained in advance; determining the data voltage compensation quantity of the first display area or the duty ratio of a light-emitting control signal according to a first brightness compensation value corresponding to the current gray scale in the current use duration, a second brightness compensation value corresponding to the current temperature in the current use duration and a third brightness compensation value corresponding to the current brightness grade in the current use duration; and performing brightness compensation on the first display region based on the data voltage compensation amount or the duty ratio of the light emitting control signal.

According to an embodiment of the first aspect of the present application, the pre-obtaining a plurality of first luminance compensation values of different gray scales at different time durations may specifically include: for any jth use duration in the test time period, acquiring initial brightness corresponding to the mth color sub-pixel in the ith gray scale and second brightness corresponding to the jth use duration of the mth color sub-pixel in the ith gray scale, wherein the ith gray scale is any gray scale, the mth color sub-pixel is any color sub-pixel, and i, m and j are positive integers; and determining a first brightness compensation value of the mth color sub-pixel in the jth use time length of the ith gray scale according to the initial brightness and the second brightness.

According to any one of the foregoing embodiments of the first aspect of the present application, determining, according to the initial brightness and the second brightness, a first brightness compensation value of the mth color sub-pixel in the jth use duration at the ith gray scale specifically includes: determining a first brightness compensation value of the m-th color sub-pixel in the j-th use time length at the ith gray scale according to the following expression:

wherein, Gain1 represents the first brightness compensation value of the m-th color sub-pixel in the j-th use time length at the i-th gray scale, L_{init is}Indicating the initial brightness, L, corresponding to the m-th color sub-pixel in the ith gray scale_i2 represents the second brightness of the m-th color sub-pixel in the j-th use time length when the ith gray scale is displayed, and gamma represents the preset gamma value.

According to any one of the preceding embodiments of the first aspect of the present application, the test time period is a time period between a preset second time period threshold and a preset third time period threshold, and the third time period threshold is greater than the second time period threshold; the pre-obtaining a plurality of first brightness compensation values of different gray scales under different use durations may specifically include: and obtaining a first brightness compensation value of the mth color sub-pixel in the nth use time length when the ith gray scale is detected based on a linear interpolation algorithm and a plurality of first brightness compensation values of the mth color sub-pixel in the test time length when the ith gray scale is detected, wherein the nth use time length is any use time length larger than a third time length threshold, and n is a positive integer.

According to any one of the foregoing embodiments of the first aspect of the present application, the obtaining a plurality of second brightness compensation values at different temperatures and for different usage periods in advance may specifically include: acquiring a plurality of first brightness attenuation parameters when the test display panel displays a target gray scale picture at a preset reference temperature and a plurality of second brightness attenuation parameters when the test display panel displays the target gray scale picture at an ith temperature, wherein each first brightness attenuation parameter corresponds to a first service duration, and each second brightness attenuation parameter corresponds to a second service duration; determining a first use time length corresponding to a first brightness attenuation parameter with the minimum difference with the reference brightness attenuation parameter by taking a second brightness attenuation parameter corresponding to the jth second use time length as the reference brightness attenuation parameter, wherein the jth second use time length is any second use time length, and j is a positive integer; and determining a second brightness compensation value of the ith temperature at the jth second use time according to the first use time, the jth second use time and a preset first adjustment parameter corresponding to the reference brightness attenuation parameter.

According to any one of the foregoing embodiments of the first aspect of the present application, determining the second brightness compensation value of the ith temperature at the jth second usage time according to the first usage time corresponding to the reference brightness decay parameter, the jth second usage time and the preset first adjustment parameter may specifically include: determining a second luminance compensation value for the ith temperature at the jth second use duration according to the following expression:

wherein, Gain_ij2 denotes a second luminance compensation value, T, of the ith temperature at the jth second usage time_ij2 denotes a first usage time period, T, corresponding to the reference luminance decay parameter_ij3 denotes the jth second duration of use, and k1 denotes a preset first adjustment parameter.

According to any one of the foregoing embodiments of the first aspect of the present application, obtaining a plurality of third luminance compensation values of different luminance levels in different usage periods in advance may specifically include: for any jth use time length in the test time period, acquiring a fourth brightness compensation value of different gray scales in the jth use time length, wherein i and j are positive integers; acquiring a fifth brightness compensation value of different duty ratios in the jth use time length, wherein the duty ratio is the duty ratio of a conducting level in the light-emitting control signal; and determining a third brightness compensation value of different gray scales and different duty ratios under the j-th use time length according to the fourth brightness compensation value and the fifth brightness compensation value.

According to any of the foregoing embodiments of the first aspect of the present application, the obtaining a fourth luminance compensation value of different gray scales at the jth use time duration may specifically include: acquiring a fourth brightness compensation value of a part of gray scale in a preset target gray scale range at the jth use time length and a brightness parameter of the part of gray scale at the jth use time length; establishing a first nonlinear regression model based on a fourth brightness compensation value of a part of gray scales at the jth use time length and a brightness parameter of the part of gray scales at the jth use time length; acquiring brightness parameters of other gray scales except for partial gray scales in the target gray scale range at the j-th use time; and obtaining fourth brightness compensation values of other gray scales at the jth use time length based on the first nonlinear regression model and the brightness parameters of the other gray scales at the jth use time length.

According to any one of the foregoing embodiments of the first aspect of the present application, obtaining the fifth luminance compensation value of different duty ratios at the jth usage duration may specifically include: acquiring a fifth brightness compensation value of a part of duty ratio in a preset target duty ratio range in the jth use time and a brightness parameter of the part of duty ratio in the jth use time; establishing a second nonlinear regression model based on a fifth brightness compensation value of the partial duty ratio at the jth use time length and a brightness parameter of the partial duty ratio at the jth use time length; acquiring brightness parameters of other duty ratios except for partial duty ratios in a target duty ratio range in the j-th use time length; and obtaining fifth brightness compensation values of other duty ratios in the jth using time length based on the second nonlinear regression model and the brightness parameters of the other duty ratios in the jth using time length.

According to any one of the foregoing embodiments of the first aspect of the present application, the obtaining a fifth luminance compensation value of a part of duty ratios in a preset target duty ratio range at the jth use time duration may specifically include: acquiring the brightness parameter variation of the test display panel after the jth use time under the pth duty ratio, wherein the pth duty ratio is any duty ratio in partial duty ratios, and p is a positive integer; acquiring a first time length required by the brightness parameter of the test display panel to reduce the brightness parameter variation under a preset reference duty ratio; and determining a fifth brightness compensation value of the p duty ratio in the j use time length according to the first time length, the j use time length and a preset second adjusting parameter.

According to any one of the preceding embodiments of the first aspect of the present application, the test time period is a time period between a preset second time period threshold and a preset third time period threshold, and the third time period threshold is greater than the second time period threshold; the pre-obtaining a plurality of third brightness compensation values of different brightness levels under different use durations may specifically further include: and obtaining a third brightness compensation value of the ith gray scale and the qth duty cycle at the nth use time length based on a linear interpolation algorithm and a plurality of third brightness compensation values of the ith gray scale and the qth duty cycle at a plurality of use time lengths in the test time period, wherein the nth use time length is any use time length larger than a third time length threshold, and n is a positive integer.

In a second aspect, an embodiment of the present application provides a compensation apparatus for a display panel, where the display panel includes a first display area and a second display area, and the compensation apparatus for the display panel includes: the first acquisition module is used for acquiring a plurality of first brightness compensation values of different gray scales under different use time lengths, a plurality of second brightness compensation values of different temperatures under different use time lengths and a plurality of third brightness compensation values of different brightness grades under different use time lengths in advance; the second acquisition module is used for acquiring the current gray scale, the current temperature, the current brightness level and the current use duration of the first display area; the first determining module is used for respectively determining a first brightness compensation value corresponding to the current gray scale under the current use time length, a second brightness compensation value corresponding to the current temperature under the current use time length and a third brightness compensation value corresponding to the current brightness grade under the current use time length according to a plurality of first brightness compensation values, a plurality of second brightness compensation values and a plurality of third brightness compensation values which are obtained in advance under the condition that the current use time length is greater than or equal to a preset first time length threshold value; the second determining module is used for determining the data voltage compensation quantity of the first display area or the duty ratio of the light-emitting control signal according to a first brightness compensation value corresponding to the current gray scale in the current use duration, a second brightness compensation value corresponding to the current temperature in the current use duration and a third brightness compensation value corresponding to the current brightness grade in the current use duration; and the compensation module is used for performing brightness compensation on the first display area based on the data voltage compensation quantity or the duty ratio of the light-emitting control signal.

In a third aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the compensation method for a display panel as provided in the first aspect.

According to the compensation method, the compensation device and the computer-readable storage medium of the display panel, the data voltage compensation quantity of the first display area or the duty ratio of the light-emitting control signal can be determined according to the first brightness compensation value corresponding to the current gray scale in the current use duration, the second brightness compensation value corresponding to the current temperature in the current use duration and the third brightness compensation value corresponding to the current brightness level in the current use duration; and then performing brightness compensation on the first display region based on the data voltage compensation amount or the duty ratio of the light emission control signal. Therefore, the embodiment of the application can simultaneously compensate the brightness attenuation related to the gray scale, the brightness attenuation related to the temperature and the brightness attenuation related to the brightness level in the first display area, eliminate the brightness difference between the first display area and the second display area and improve the display effect of the display panel.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic flowchart illustrating a compensation method for a display panel according to an embodiment of the present disclosure;

FIG. 3 is a flowchart illustrating a step S101 of the compensation method for the display panel shown in FIG. 2;

FIG. 4 is a flowchart illustrating a step S101 of the compensation method for the display panel shown in FIG. 2;

FIG. 5 is a diagram illustrating a relationship between temperature and a second luminance compensation value when a certain operation time is used;

FIG. 6 is a flowchart illustrating a step S101 of the compensation method for the display panel shown in FIG. 2;

FIG. 7 is a flowchart illustrating a step S501 in the compensation method of the display panel shown in FIG. 6;

FIG. 8 is a flowchart illustrating a step S502 of the compensation method for the display panel shown in FIG. 6;

FIG. 9 is a flowchart illustrating a step S701 of the compensation method for the display panel shown in FIG. 8;

fig. 10 is a schematic structural diagram of a compensation apparatus for a display panel according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the corresponding claims (the claimed subject matter) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present application can be combined with each other without contradiction.

Before explaining the technical solutions provided by the embodiments of the present application, in order to facilitate understanding of the embodiments of the present application, the present application first specifically explains the problems existing in the prior art:

as described above, the inventors of the present application have found that, as the service life of the display panel increases, a luminance difference may occur between the sub-screen of the display panel and the main screen of the display panel, resulting in a poor display effect of the display panel.

Based on the above findings, the inventors of the present application have made further intensive studies on the above problems. The inventor of the present application further finds that the brightness difference degree between the sub-screen and the main screen of the display panel is different at different gray scales, the brightness difference degree between the sub-screen and the main screen of the display panel is different at different temperatures, and the brightness difference degree between the sub-screen and the main screen of the display panel is different at different brightness levels. The root cause of the above problems is: the brightness attenuation degrees of the auxiliary screens at different gray scales are different, the brightness attenuation degrees of the auxiliary screens at different temperatures are different, and the brightness attenuation degrees of the auxiliary screens at different brightness levels are different. Therefore, the inventor of the present application considers that in order to perform accurate luminance compensation on the sub-screen, it is necessary to consider various factors such as gray scales, temperature, and luminance levels, that is, it is necessary to compensate luminance fading associated with gray scales, luminance fading associated with temperature, and luminance fading associated with luminance levels in the sub-screen, so as to eliminate the luminance difference between the first display region and the second display region.

After the above-mentioned preliminary technical concept is obtained, there is a more important difficulty to be solved, that is, how to calculate the brightness compensation value corresponding to the gray scale, how to calculate the brightness compensation value corresponding to the temperature, and how to calculate the brightness compensation value corresponding to the brightness level. In the subsequent research process, the present application overcomes this technical difficulty, and the specific calculation process will be described in detail below when describing the compensation method, device and computer-readable storage medium of the display panel according to the embodiment of the present application.

It should be noted that the Brightness level can be understood as a Display Brightness Value (DBV) or simply a Brightness progress bar. In practice, the brightness level may be characterized by a register value of a preset type register (e.g., 51 register). The brightness level adjustment (DBV adjustment) may include a gray scale adjustment, which may also be referred to as a data voltage data adjustment, and an EM duty cycle adjustment.

In view of the above research of the inventor, embodiments of the present application provide a compensation method and apparatus for a display panel, and a computer readable storage medium, which can solve the technical problem in the related art that as the service life of the display panel increases, a luminance difference may occur between a first display area of the display panel and a second display area of the display panel, resulting in a poor display effect of the display panel.

The technical idea of the embodiment of the application is as follows: the method comprises the steps of obtaining a plurality of first brightness compensation values of different gray scales under different using time lengths, a plurality of second brightness compensation values of different temperatures under different using time lengths and a plurality of third brightness compensation values of different brightness grades under different using time lengths in advance; then, under the condition that the current use duration of the first display area is greater than or equal to a preset first time threshold, respectively determining a first brightness compensation value corresponding to the current gray scale under the current use duration, a second brightness compensation value corresponding to the current temperature under the current use duration and a third brightness compensation value corresponding to the current brightness grade under the current use duration according to a plurality of first brightness compensation values, a plurality of second brightness compensation values and a plurality of third brightness compensation values which are obtained in advance; determining a data voltage compensation amount of the first display area or a duty ratio of a light emitting control signal according to the determined first brightness compensation value, the second brightness compensation value and the third brightness compensation value; and performing brightness compensation on the first display region based on the data voltage compensation amount or the duty ratio of the light emitting control signal. Therefore, the brightness attenuation related to gray scale, the brightness attenuation related to temperature and the brightness attenuation related to brightness level in the first display area can be compensated simultaneously, the brightness difference between the first display area and the second display area is eliminated, and the display effect of the display panel is improved.

First, a compensation method of the display panel provided in the embodiment of the present application is described below.

As shown in fig. 1, the display panel 10 to which the compensation method of the display panel according to the embodiment of the present application is applied may include a first display area AA1 and a second display area AA 2. The first display area AA1 may be the above-described sub screen (UDC area or CUP area), and the second display area AA2 may be the above-described main screen. It is easily understood that, in order to ensure the quality of the image photographed by the under-screen camera, the light transmittance of the first display area AA1 is greater than that of the second display area AA 2. The first display area AA1 and the second display area AA2 are not limited in the embodiments of the present application, and for example, the second display area AA2 may surround the first display area AA1, and for example, the second display area AA2 may be located on only three sides (e.g., left, right, and lower sides) of the first display area AA 1.

Fig. 2 is a flowchart illustrating a compensation method for a display panel according to an embodiment of the present disclosure. As shown in fig. 2, the compensation method of the display panel may include the following steps S101 to S105.

S101, acquiring a plurality of first brightness compensation values of different gray scales in different using time lengths, a plurality of second brightness compensation values of different temperatures in different using time lengths and a plurality of third brightness compensation values of different brightness grades in different using time lengths in advance.

S102, obtaining the current gray scale, the current temperature, the current brightness level and the current use duration of the first display area.

S103, under the condition that the current use duration is greater than or equal to a preset first duration threshold, respectively determining a first brightness compensation value corresponding to the current gray scale under the current use duration, a second brightness compensation value corresponding to the current temperature under the current use duration and a third brightness compensation value corresponding to the current brightness level under the current use duration according to a plurality of first brightness compensation values, a plurality of second brightness compensation values and a plurality of third brightness compensation values which are obtained in advance.

S104, determining the data voltage compensation quantity of the first display area or the duty ratio of the light-emitting control signal according to a first brightness compensation value corresponding to the current gray scale in the current using time length, a second brightness compensation value corresponding to the current temperature in the current using time length and a third brightness compensation value corresponding to the current brightness grade in the current using time length.

And S105, performing brightness compensation on the first display area based on the data voltage compensation amount or the duty ratio of the light-emitting control signal.

Specific implementations of the above steps will be described in detail below.

The compensation method for the display panel provided by the embodiment of the application can simultaneously compensate the brightness attenuation related to the gray scale, the brightness attenuation related to the temperature and the brightness attenuation related to the brightness level in the first display area, eliminate the brightness difference between the first display area and the second display area and improve the display effect of the display panel.

Specific implementations of the above steps are described below.

In S101, a plurality of first brightness compensation values of different gray scales in different use durations, a plurality of second brightness compensation values of different temperatures in different use durations, and a plurality of third brightness compensation values of different brightness levels in different use durations are obtained in advance.

Specifically, a preset number of display panels may be obtained as test display panels, and then the test display panels are tested to obtain a plurality of first brightness compensation values, a plurality of second brightness compensation values, and a plurality of third brightness compensation values. Considering that the testing process does not easily take a long time, such as several months, it can be divided into a testing period and a period other than the testing period. The test time period is a time period in which the test process is performed, for example, 0 to 240 hours (hours), that is, a time period from a preset second duration threshold to a preset third duration threshold of the use duration of the display panel is defined as the test time period, and the third duration threshold is greater than the second duration threshold. For example, the second duration threshold may be 0, and the third duration threshold may be 240 h. For any jth use duration in the test time period, the respective brightness compensation values (including the first brightness compensation value, the second brightness compensation value, and the third brightness compensation value) at the jth use duration may be determined according to data obtained during the test. The brightness compensation values for the use periods other than the test period can be determined by linear interpolation according to the brightness compensation values of the use periods in the test period.

Optionally, according to some embodiments of the present application, in order to obtain a plurality of first brightness compensation values of different gray scales at different usage time periods, the brightness attenuation of the gray scale image is converted from the gray scale domain to the brightness domain to obtain the first brightness compensation value related to the gray scale.

Specifically, as shown in fig. 3, the pre-acquiring a plurality of first luminance compensation values of different gray scales at different usage time periods may specifically include steps S301 and S302.

S301, for any jth using time length in the testing time period, obtaining initial brightness corresponding to the mth color sub-pixel in the ith gray scale and second brightness corresponding to the mth color sub-pixel in the jth using time length in the ith gray scale, wherein the ith gray scale is any gray scale, the mth color sub-pixel is any color sub-pixel, and i, m and j are positive integers.

It is readily understood that the display panel may include a plurality of color sub-pixels, such as red, green, and blue sub-pixels. The m-th color sub-pixel may be any color sub-pixel of a plurality of color sub-pixels, for example, the m-th color sub-pixel may be a red sub-pixel, a green sub-pixel, or a blue sub-pixel. The initial brightness corresponding to the mth color sub-pixel in the ith gray scale can be understood as the brightness corresponding to the mth color sub-pixel when the brightness of the ith gray scale is not attenuated, and the second brightness corresponding to the mth color sub-pixel in the jth using time length in the ith gray scale can be understood as the brightness corresponding to the mth color sub-pixel in the ith gray scale after the jth using time length passes. In practical applications, the ith gray scale can be any gray scale within the range of 0-255 gray scales. That is, for each gray scale in the range of 0 to 255 gray scales, the initial brightness corresponding to the mth color sub-pixel in each gray scale can be obtained, and the second brightness of any use duration of the mth color sub-pixel in the test time period in each gray scale can be obtained at the same time.

In some specific examples, the initial brightness corresponding to the mth color sub-pixel at the ith gray scale and the second brightness corresponding to the mth color sub-pixel at the jth use time at the ith gray scale may be acquired by an optical measurement device such as a color analyzer, for example. For example, the data voltage value of the mth color sub-pixel corresponding to the ith gray scale is used for controlling the test display panel to display the mth color pure color picture, the brightness of the first display area of the test display panel when the test display panel is just started to be used (the using time length is approximately 0) is collected through the optical measurement equipment, and the initial brightness corresponding to the mth color sub-pixel at the ith gray scale is obtained. And controlling the test display panel to continuously display the m-th color pure color picture, and acquiring the brightness of the first display area of the test display panel when the test display panel is used for the j-th time duration through optical measurement equipment to obtain the second brightness corresponding to the m-th color sub-pixel when the ith gray scale is used for the j-th time duration. For example, the initial brightness of the m-th color sub-pixel at the i-th gray scale is obtained as A1 nit 150nit, the second brightness of the m-th color sub-pixel at the i-th gray scale at the j-th use time length is obtained as A2 nit, and A2 is smaller than A1.

S302, determining a first brightness compensation value of the mth color sub-pixel in the ith gray scale in the jth using time length according to the initial brightness corresponding to the mth color sub-pixel in the ith gray scale and the second brightness corresponding to the mth color sub-pixel in the ith gray scale in the jth using time length. Namely, the first brightness compensation value of the m-th color sub-pixel in a certain service time length of each gray scale is determined through the corresponding brightness change before and after each gray scale.

In some specific embodiments, optionally, S302 may specifically include:

determining a first brightness compensation value of the m-th color sub-pixel in the j-th use time length at the ith gray scale according to the following expression:

wherein, Gain1 represents the first brightness compensation value of the m-th color sub-pixel in the j-th use time length at the i-th gray scale, L_{init is}Indicating the initial brightness, L, corresponding to the m-th color sub-pixel in the ith gray scale_i2 represents the second brightness corresponding to the mth color sub-pixel in the jth using time length when the ith gray scale is displayedAnd gamma denotes a preset gamma value. Exemplarily, γ may be equal to 2.2.

For example, the first brightness compensation value of the red sub-pixel in the jth use duration at the ith gray scale, the first brightness compensation value of the green sub-pixel in the jth use duration at the ith gray scale, and the first brightness compensation value of the blue sub-pixel in the jth use duration at the ith gray scale can be sequentially determined through the expression (1). It is easy to understand that the first brightness compensation values of the sub-pixels with different colors in the j-th use time period under the same gray scale can be different.

Therefore, the first brightness compensation value related to the gray scale can be obtained by converting the brightness attenuation of the gray scale picture from the gray scale domain to the brightness domain.

The determination process of the first illumination compensation value at the use time period within the test period is described above, and the determination process of the first illumination compensation value at the use time periods other than the test period is described below.

According to some embodiments of the present application, optionally, the step of obtaining a plurality of first brightness compensation values of different gray scales in different usage durations in advance may further include:

and obtaining a first brightness compensation value of the mth color sub-pixel in the nth use time length in the ith gray scale based on a linear interpolation algorithm and a plurality of first brightness compensation values of the mth color sub-pixel in the test time length in the ith gray scale.

As mentioned above, the test time period is a time period from the preset second time period threshold to the preset third time period threshold. The nth use duration may be any use duration greater than the third duration threshold, that is, the nth use duration is any duration outside the test time period, and n is a positive integer.

Therefore, the first brightness compensation value of the mth color sub-pixel at the ith gray scale at any time outside the test time period can be obtained by performing linear interpolation processing on the first brightness compensation values of the plurality of using time periods of the mth color sub-pixel at the ith gray scale in the test time period. For example, in some examples, the first luminance compensation value Gain1 of the m-th color sub-pixel used for 290h is 0.046875 when the ith gray scale is obtained.

As shown in fig. 4, according to some embodiments of the present application, optionally, in S101, a plurality of second brightness compensation values at different temperatures and for different usage periods are obtained in advance, which may specifically include steps S401 to S403.

S401, a plurality of first brightness attenuation parameters when the test display panel displays the target gray scale picture at a preset reference temperature and a plurality of second brightness attenuation parameters when the test display panel displays the target gray scale picture at the ith temperature are obtained, wherein each first brightness attenuation parameter corresponds to a first service life, and each second brightness attenuation parameter corresponds to a second service life.

It should be noted that the first usage duration may be understood as a usage duration under a condition that the test display panel displays the target grayscale picture at the reference temperature, and the second usage duration may be understood as a usage duration under a condition that the test display panel displays the target grayscale picture at the ith temperature. The first and second usage periods are for convenience of distinction and explanation only and have no special meaning.

For ease of understanding, the following description is made in conjunction with tables 1 and 2.

TABLE 125 deg.C multiple first Brightness decay parameters

TABLE 245 ℃ multiple second Brightness decay parameters

T2：h	0	……	231.99	232.99
					Data source	Experiment of	……	Experiment of	Experiment of
Second brightness decay parameter	1	……	0.88025912	0.87984022

As shown in table 1 and table 2, table 1 shows a plurality of first brightness decay parameters for different first usage periods T1 when the test display panel displays a 255 gray scale picture at a reference temperature (e.g., 25 ℃), and table 2 shows a plurality of second brightness decay parameters for different second usage periods T2 when the test display panel displays a 255 gray scale picture at an ith temperature (e.g., 45 ℃).

In some embodiments, the first brightness decay parameter may include a first brightness decay ratio, which is a ratio of a brightness of the test display panel at the reference temperature when the test display panel displays the target grayscale picture at the first usage time to an initial brightness of the test display panel at the reference temperature when the test display panel displays the target grayscale picture. For example, the initial luminance of the test display panel displaying the target grayscale picture at the reference temperature is 450nit, and the luminance of the test display panel displaying the target grayscale picture at the reference temperature when the test display panel is used at 232.99h is 415.43nit, the first luminance decay ratio at this time may be 415.43/450-0.9231793. Similarly, the second brightness decay parameter may include a second brightness decay ratio, which is a ratio of the brightness of the test display panel at the ith temperature when the test display panel displays the target grayscale picture at the second usage time to the initial brightness of the test display panel at the ith temperature when the test display panel displays the target grayscale picture at the ith temperature. For example, the initial luminance of the test display panel displaying the target grayscale picture at the ith temperature is 450nit, and the luminance of the test display panel displaying the target grayscale picture at the ith temperature when the test display panel is used at 232.99h is 395.928nit, then the first luminance decay ratio at this time may be 395.928/450 ═ 0.87984022.

S402, taking a second brightness attenuation parameter corresponding to the jth second use time length as a reference brightness attenuation parameter, and determining a first use time length corresponding to a first brightness attenuation parameter with the minimum difference with the reference brightness attenuation parameter. Wherein, the jth second use duration is any second use duration, and j is a positive integer.

Specifically, taking T2-231.99 h in table 2 above as an example, in S402, the second luminance decay parameter 0.87984022 corresponding to T2-231.99 h may be used as the reference luminance decay parameter, and then the first usage time period corresponding to the first luminance decay parameter (e.g., 0.8798432 in table 1) that has the smallest difference from the reference luminance decay parameter 0.87984022 may be determined, e.g., T1-391.18 h in table 1 may be determined.

S403, determining a second brightness compensation value of the ith temperature at the jth second use time length according to the first use time length, the jth second use time length and a preset first adjustment parameter corresponding to the reference brightness attenuation parameter.

In some specific embodiments, optionally, S403 may specifically include:

determining a second luminance compensation value for the ith temperature at the jth second use duration according to the following expression:

wherein, Gain_ij2 denotes the ith temperatureSecond luminance compensation value, T, for jth second use time length_ij2 denotes a first usage time period, T, corresponding to the reference luminance decay parameter_ij3 denotes the jth second duration of use, and k1 denotes a preset first adjustment parameter.

Therefore, the obtained second brightness compensation value is corrected by introducing the first adjusting parameter, and the obtained second brightness compensation value can be ensured to be more accurate. It should be noted that k1 can be flexibly adjusted according to actual situations, and this is not limited in the embodiments of the present application. In some specific examples, k1 may be determined according to the number of compressed bits of the driver chip IC in the display device, for example, k1 may be equal to 8 (i.e., the third power of 2) when the number of compressed bits of the driver chip IC is 3 bits.

For example, based on the above expression (2), it can be obtained that the second luminance compensation value at 45 ℃ when 232.99h is used is 391.18/(232.99 × 8) ═ 0.209869522.

According to some embodiments of the present application, optionally, in order to reduce the workload during the test and increase the test speed, the target temperature range may be set in advance, and the above steps S401 to S403 may be taken for the partial temperatures in the target temperature range to determine the second luminance compensation values at the respective second use time lengths. The second luminance compensation values of the determined partial temperatures at the respective second use times may be linearly interpolated for the temperatures other than the partial temperatures in the target temperature range, thereby obtaining second luminance compensation values of the temperatures other than the partial temperatures at the respective second use times.

Fig. 5 is a diagram illustrating a relationship between a temperature and a second luminance compensation value when a certain time is used. The abscissa in fig. 5 represents the temperature, and the ordinate represents the second luminance compensation value. As shown in fig. 5, in some specific examples, linear interpolation may be performed according to the second luminance compensation value at 25 ℃ at the jth second usage time, the second luminance compensation value at 45 ℃ at the jth second usage time, and the second luminance compensation value at 60 ℃ at the jth second usage time, to obtain the second luminance compensation value at 96 ℃ at the jth second usage time, for example, to obtain the second luminance compensation value at 0.82934924 at 232.99h usage time at 96 ℃.

In addition, for the second brightness compensation values of different temperatures at other use time periods outside the test time period, the second brightness compensation values of different temperatures at any use time period outside the test time period can also be obtained by using a plurality of second brightness compensation values of different temperatures at a plurality of use time periods in the test time period.

In this way, the second luminance compensation values at different temperatures at different usage times can be obtained based on the linear interpolation.

As shown in fig. 6, according to some embodiments of the present application, optionally, in S101, obtaining in advance a plurality of third luminance compensation values of different luminance levels at different usage time periods may specifically include the following steps S501 to S503.

S501, for any jth use time length in the test time period, acquiring a fourth brightness compensation value of different gray scales in the jth use time length, wherein j is a positive integer.

And S502, acquiring a fifth brightness compensation value of different duty ratios when the j-th use time is long, wherein the duty ratio is the duty ratio of the conduction level in the light-emitting control signal.

As previously described, the brightness level adjustment (DBV adjustment) includes a gray scale adjustment and an EM duty ratio adjustment. Therefore, when determining the third luminance compensation value of the luminance level at different usage periods, both the gray scale and the EM duty ratio need to be considered. The EM duty ratio is a duty ratio of an on level in the emission control signal, such as a duty ratio of a low level in the emission control signal. Specifically, for example, when the light emission control signal is low level, the sub-pixels in the display panel emit light; when the light emission control signal is at a high level, the sub-pixels in the display panel do not emit light. Therefore, the adjustment of the luminance can be realized by adjusting the proportion of the low level in the light emission control signal to one frame time (low level duty ratio).

S503, determining a third brightness compensation value with different gray scales and different duty ratios in the jth using time according to the fourth brightness compensation value and the fifth brightness compensation value.

As shown in fig. 7, according to some embodiments of the present application, optionally, S501 may specifically include steps S601 to S604.

S601, acquiring a fourth brightness compensation value of a part of gray scale in a preset target gray scale range when the part of gray scale is used at the jth time and a brightness parameter of the part of gray scale when the part of gray scale is used at the jth time. Illustratively, the target gray scale range may include, for example, 0 to 255 gray scales.

In some examples, the brightness parameter may include a brightness normalization value, i.e., a ratio of a brightness corresponding to a gray level at the j-th usage time period to a target brightness (maximum brightness) corresponding to a maximum gray level.

For ease of understanding, the following description is made in conjunction with table 3.

TABLE 3 fourth luminance compensation value and luminance parameter

Gray scale	64	128	192	255
					Normalized value of brightness	0.0477758	0.2195197	0.5356416	1
Data source	Experiment of	Experiment of	Experiment of	Experiment of
					Fourth luminance compensation value	0.335656	0.417053	0.586512	1

As shown in table 3, table 3 shows fourth luminance compensation values and luminance parameters for a portion of gray levels (e.g., 64 gray levels, 128 gray levels, 192 gray levels, and 255 gray levels) at the j-th use time. The fourth luminance compensation value of the above-mentioned partial gradation may be determined, for example, in a similar manner to the first luminance compensation value, and the fourth luminance compensation value of the partial gradation in the target gradation range at the j-th use time may be determined, for example, according to the following expression (3).

Wherein Gain1' represents the fourth brightness compensation value of the ith gray scale in the jth using time length, L_{init is}' indicates an initial luminance corresponding to the ith gray level, L_i2' represents the second brightness corresponding to the ith gray scale in the jth using time length, and gamma represents the preset gamma value. Exemplarily, γ may be equal to 2.2.

It should be noted that the initial luminance L corresponding to the ith gray scale_{init is}' is the initial brightness of the mixed color light (such as white light or gray light) emitted by the three color sub-pixels of the red sub-pixel, the green sub-pixel and the blue sub-pixel at the ith gray scale, i.e. the initial brightness L corresponding to the ith gray scale_{init is}' is equal to the sum of the initial brightness of the red sub-pixel at the ith gray scale, the initial brightness of the green sub-pixel at the ith gray scale and the initial brightness of the blue sub-pixel at the ith gray scale. Correspondingly, the ith gray scale has a second brightness L corresponding to the jth use time length_i2' is three colors of red sub-pixel, green sub-pixel and blue sub-pixel at ith gray scaleThe mixed color light of the three color lights emitted by the sub-pixel has the brightness in the j-th use time period. The fourth luminance compensation value Gain1 'of the ith gray scale in the jth use time period can be commonly used by the three color sub-pixels, i.e. the red, green and blue colors can not be distinguished when determining the luminance compensation value corresponding to the DBV, and the red, green and blue sub-pixels can correspond to the same fourth luminance compensation value Gain 1'.

The brightness normalization value of each gray scale in the partial gray scales can be determined by collecting the brightness corresponding to the gray scale in the jth use time and taking the target brightness quotient corresponding to the known maximum gray scale (such as 255 gray scales).

S602, establishing a first nonlinear regression model based on a fourth brightness compensation value of the part of gray scale in the jth use time and a brightness parameter of the part of gray scale in the jth use time.

Specifically, a first nonlinear regression model y ═ a + bx + cx is constructed²+dx³+ … …. Where x may be a fourth luminance compensation value and y may be a luminance parameter. Alternatively, x may be a luminance parameter and y may be a fourth luminance compensation value. Then, the fourth luminance compensation value of the partial gray scale at the jth use time obtained in S601 and the luminance parameter of the partial gray scale at the jth use time are substituted into the nonlinear regression model, so as to determine the coefficients (e.g., a, b, c, and d) in the first nonlinear regression model. In some specific examples, e.g., a-0.3124, b-0.4926, c-0.1482, and d-0.3432 are obtained, and thus the first nonlinear regression model may be y-0.3432 x³-0.1482x²+0.4926x+0.3124。

S603, acquiring brightness parameters of other gray scales except for partial gray scales in the target gray scale range in the j-th use time length.

For ease of understanding, the following description is made in conjunction with table 4.

TABLE 4 fourth Brightness Compensation values and Brightness parameters

Specifically, as shown in table 4, table 4 shows the fourth luminance compensation value and the luminance parameter when the other gray scales (e.g., 140 gray scales and 160 gray scales) except for a part of the gray scales in the target gray scale range are used for the j-th use time.

In S603, optionally, the brightness parameters of other gray scales in the j-th use duration may be determined by collecting the brightness corresponding to the other gray scales in the target gray scale range except for the partial gray scale in the j-th use duration and taking the quotient of the target brightness corresponding to the known maximum gray scale (e.g., 255 gray scale).

S604, obtaining fourth brightness compensation values of other gray scales at the jth use time length based on the first nonlinear regression model and brightness parameters of the other gray scales at the jth use time length.

Specifically, the luminance parameters of other grayscales at the jth use time may be input into the first nonlinear regression model, so as to obtain the fourth luminance compensation values of other grayscales at the jth use time, such as the fourth luminance compensation values of the 140 grayscales and the 160 grayscales at the jth use time in table 4.

Therefore, the fourth brightness compensation value of different gray scales at different use time lengths can be obtained through the established first nonlinear regression model.

As shown in fig. 8, according to some embodiments of the present application, optionally, S502 may specifically include steps S701 to S704.

S701, acquiring a fifth brightness compensation value of a part of duty ratio in a preset target duty ratio range in the jth use time length and a brightness parameter of the part of duty ratio in the jth use time length. Illustratively, the target duty cycle range may include 0-100%. In some examples, the luminance parameter may include a luminance normalization value, and the luminance normalization value of the ith duty cycle in the jth use time period may be understood as a ratio of a luminance corresponding to the ith duty cycle in the jth use time period to a maximum luminance that can be displayed by the test display panel, where the ith duty cycle is any duty cycle.

For ease of understanding, the following description is made in conjunction with table 5.

TABLE 5 fifth luminance compensation value and luminance parameter

As shown in table 5, table 5 shows a fifth luminance compensation value and a luminance parameter at a j-th use duration with a partial duty ratio (e.g., 21% duty ratio, 53% duty ratio, 100% duty ratio). The brightness normalization value of each duty ratio in the partial duty ratios can be determined by collecting the brightness corresponding to the j-th use time of the same gray scale picture under each duty ratio and dividing the brightness by the maximum brightness which can be displayed by the known test display panel.

In some embodiments, the fifth luminance compensation value of the partial gray scale may be determined in the following manner, for example. As shown in fig. 9, S701 may specifically include S801 to S803.

S801, acquiring the brightness parameter variation of the test display panel after the jth using time length under the pth duty ratio. And p is any duty ratio in the partial duty ratios, and p is a positive integer.

Taking the 53% duty ratio as an example, in S801, for example, the variation of the luminance parameter (for example, the variation of the luminance normalization value, which is denoted as Δ L) of the test display panel in the usage time period of 100h after the 53% duty ratio is obtained.

S802, acquiring a first time length required by the brightness parameter of the test display panel to reduce the brightness parameter variation under the preset reference duty ratio. Illustratively, the reference duty cycle may comprise a 100% duty cycle.

In S802, for example, a first time period required for the luminance parameter of the test display panel to decrease by Δ L at a 100% duty cycle is obtained. For example, the luminance parameter variation of the test display panel at 53% duty cycle from 0 to 100h is Δ L, and the luminance parameter variation of the test display panel at 100% duty cycle from 0 to T1 'is Δ L, then T1' is the first time period.

S803, determining a fifth brightness compensation value of the p duty ratio in the j use time length according to the first time length, the j use time length and a preset second adjusting parameter.

In some specific embodiments, optionally, S803 may specifically include:

determining a fifth luminance compensation value of the pth duty cycle at the jth usage period according to the following expression:

wherein, Gain_pj5 denotes a fifth brightness compensation value of the pth duty cycle at the jth use period, T1' denotes a first period, T_jIndicating the jth usage time period, and k2 indicating a preset second adjustment parameter. It should be noted that the second adjustment parameter can be flexibly adjusted according to actual situations, and this is not limited in the embodiment of the present application. In some examples, k2 may be equal to 1.

With continued reference to fig. 8, S702 builds a second non-linear regression model based on the fifth luminance compensation value of the partial duty ratio at the jth usage time and the luminance parameter of the partial duty ratio at the jth usage time.

Specifically, a second nonlinear regression model y ' ═ a ' + b ' x ' + c ' x ' is constructed '²+d’x’³+ … …. Where x 'may be a fifth luminance compensation value and y' may be a luminance parameter. Alternatively, x 'may be a luminance parameter and y' may be a fifth luminance compensation value. And then substituting the fifth brightness compensation value of the partial duty ratio obtained in the step S701 in the jth service time and the brightness parameter of the partial duty ratio in the jth service time into the second nonlinear regression model, so as to determine the coefficients (such as a ', b', c 'and d') in the second nonlinear regression model. In some specific examples, a ' ═ 0.0367, b ' ═ 1.9997, c ' ═ 0.963, and d ' ═ 0 are obtained, for example, and thus the second nonlinear regression model may be y ' ═ 0.963x²+1.9997x-0.0367。

And S703, acquiring brightness parameters of other duty ratios except for the partial duty ratio in the target duty ratio range in the j-th use time length.

Specifically, for each duty ratio except for a part of duty ratios in the target duty ratio range, the luminance parameter of the jth use time length in each duty ratio except for the part of duty ratios in the target duty ratio range can be determined by acquiring the luminance of the same gray scale image corresponding to the jth use time length in each duty ratio and dividing the luminance by the known maximum luminance which can be displayed by the test display panel.

S704, obtaining fifth brightness compensation values of other duty ratios in the jth using time length based on the second nonlinear regression model and the brightness parameters of the other duty ratios in the jth using time length.

Specifically, the brightness parameters of other duty cycles in the jth usage duration may be input into the second nonlinear regression model, so as to obtain a fifth brightness compensation value of other duty cycles in the jth usage duration, for example, to obtain 41.758% of the fifth brightness compensation value of the duty cycle in the jth usage duration to be 0.630413473.

In this way, the fifth brightness compensation value of different duty ratios at different usage time periods can be obtained through the established second nonlinear regression model.

For ease of understanding, the following description is made in conjunction with table 6.

TABLE 6 fifth luminance compensation value and luminance parameter

As shown in table 6, for example, the luminance normalization value 0.41758 of 41.758% at the j-th use period may be input to the second nonlinear regression model, so as to obtain a fifth luminance compensation value 0.630413473 of 41.758% duty ratio at the j-th use period.

After obtaining the fourth luminance compensation value of the ith gray scale in the jth use time length and the fifth luminance compensation value of the pth duty ratio in the jth use time length, a product between the fourth luminance compensation value of the ith gray scale in the jth use time length and the fifth luminance compensation value of the pth duty ratio in the jth use time length can be calculated, so as to obtain a third luminance compensation value of the ith gray scale and the qth duty ratio in the jth use time length.

The determination process of the third illumination compensation value at the use time period within the test period is described above, and the determination process of the third illumination compensation value at the use time periods other than the test period is described below.

According to some embodiments of the present application, optionally, the obtaining a plurality of third luminance compensation values of different luminance levels in different use durations in advance may further include:

and obtaining a third brightness compensation value of the ith gray scale and the qth duty cycle at the nth use time based on a linear interpolation algorithm and a plurality of third brightness compensation values of the ith gray scale and the qth duty cycle at the plurality of use time durations in the test time period. The nth use duration is any use duration larger than the third duration threshold, namely the nth use duration is any duration outside the test time period, and n is a positive integer.

In this way, by performing linear interpolation processing on the third luminance compensation values of the ith gray scale and the qth duty ratio at a plurality of times of use in the test period, the third luminance compensation value of the ith gray scale and the qth duty ratio at any time other than the test period can be obtained.

After obtaining a plurality of first brightness compensation values of different gray scales in different use durations, a plurality of second brightness compensation values of different temperatures in different use durations, and a plurality of third brightness compensation values of different brightness levels in different use durations, the brightness compensation values may be stored in a memory (e.g., Flash memory) of the display panel, so as to call the stored brightness compensation values to perform brightness compensation during the use of the display panel.

The above is the description of step S101, and S102 to S105 are described below.

In S102, the current gray scale, the current temperature, the current brightness level, and the current usage duration of the first display area are obtained. The current brightness level may include a current duty cycle, i.e., an EM duty cycle at the current time. Specifically, the current gray scale, the current temperature, the current duty ratio and the current usage duration of the first display area may be obtained.

In S103, when the current usage duration is greater than or equal to the preset first duration threshold, according to the plurality of first brightness compensation values, the plurality of second brightness compensation values, and the plurality of third brightness compensation values obtained in advance, a first brightness compensation value corresponding to the current gray scale in the current usage duration, a second brightness compensation value corresponding to the current temperature in the current usage duration, and a third brightness compensation value corresponding to the current brightness level in the current usage duration are respectively determined. It should be noted that, when determining the first brightness compensation value corresponding to the current gray scale in the current usage duration, the first brightness compensation value corresponding to the current usage duration of the red sub-pixel in the current gray scale, the first brightness compensation value corresponding to the current usage duration of the green sub-pixel in the current gray scale, and the first brightness compensation value corresponding to the current usage duration of the blue sub-pixel in the current gray scale may be determined.

Specifically, when the service time of the display panel or the first display area of the display panel exceeds a certain threshold, the brightness compensation of the first display area is started. In S103, a first luminance compensation value corresponding to the current gray scale in the current usage duration, a second luminance compensation value corresponding to the current temperature in the current usage duration, and a third luminance compensation value corresponding to the current luminance level in the current usage duration may be found directly from the plurality of first luminance compensation values, the plurality of second luminance compensation values, and the plurality of third luminance compensation values obtained in advance in a query manner. Of course, a linear interpolation mode may also be used to perform a linear interpolation on the plurality of first brightness compensation values obtained in advance to obtain a first brightness compensation value corresponding to the current gray scale in the current use duration, perform a linear interpolation on the plurality of second brightness compensation values obtained in advance to obtain a second brightness compensation value corresponding to the current temperature in the current use duration, and perform a linear interpolation on the plurality of third brightness compensation values obtained in advance to obtain a third brightness compensation value corresponding to the current brightness level (the current gray scale and the current duty ratio) in the current use duration. It should be noted that, when determining the first brightness compensation value corresponding to the current gray scale in the current use duration, linear interpolation may be performed according to a plurality of first brightness compensation values corresponding to the pre-obtained red sub-pixels to obtain the first brightness compensation value corresponding to the current gray scale for the red sub-pixels in the current use duration, linear interpolation is performed according to a plurality of first brightness compensation values corresponding to the pre-obtained green sub-pixels to obtain the first brightness compensation value corresponding to the current gray scale for the green sub-pixels in the current use duration, and linear interpolation is performed according to a plurality of first brightness compensation values corresponding to the pre-obtained blue sub-pixels to obtain the first brightness compensation value corresponding to the current gray scale for the blue sub-pixels in the current use duration.

Specifically, in some embodiments, the mapping relationship between the first brightness compensation value, the second brightness compensation value, the third brightness compensation value and the data voltage compensation amount may be established in advance through experiments or model training, so as to determine the corresponding data voltage compensation amount according to the mapping relationship.

In other embodiments, the mapping relationship between the first brightness compensation value, the second brightness compensation value, the third brightness compensation value, and the duty ratio of the light-emitting control signal may be established in advance through experiments or model training, so as to determine the duty ratio of the corresponding light-emitting control signal according to the mapping relationship.

Specifically, in some embodiments, for any mth color sub-pixel, the accumulated luminance compensation value may be obtained according to a first luminance compensation value corresponding to the mth color sub-pixel in the current usage duration at the determined current gray scale, a second luminance compensation value corresponding to the current temperature in the current usage duration, and a third luminance compensation value corresponding to the current luminance level in the current usage duration. For example, the product of the first brightness compensation value corresponding to the mth color sub-pixel in the current gray scale in the current usage duration, the second brightness compensation value corresponding to the current temperature in the current usage duration, and the third brightness compensation value corresponding to the current brightness level in the current usage duration may be calculated, and the product may be used as the accumulated brightness compensation value of the mth color sub-pixel at the current time. The mapping relationship between the accumulated luminance compensation value of the mth color sub-pixel and the data voltage compensation amount can be established in advance, so that the data voltage compensation amount of the mth color sub-pixel in the first display region corresponding to the accumulated luminance compensation value of the mth color sub-pixel at the current time can be determined according to the mapping relationship between the accumulated luminance compensation value of the mth color sub-pixel and the data voltage compensation amount and the calculated accumulated luminance compensation value of the mth color sub-pixel at the current time.

Or, in other embodiments, a mapping relationship between the accumulated luminance compensation value of the mth color sub-pixel and the duty ratio of the emission control signal may be established in advance, so that the duty ratio of the emission control signal of the mth color sub-pixel in the first display region corresponding to the accumulated luminance compensation value of the mth color sub-pixel at the current time may be determined according to the mapping relationship between the accumulated luminance compensation value of the mth color sub-pixel and the duty ratio of the emission control signal and the accumulated luminance compensation value of the mth color sub-pixel at the current time.

Specifically, in some embodiments, after the data voltage compensation amount of the mth color sub-pixel in the first display area is obtained, the data voltage value of the mth color sub-pixel in the first display area is compensated based on the data voltage compensation amount of the mth color sub-pixel in the first display area, so that the luminance attenuation related to gray scale, the luminance attenuation related to temperature, and the luminance attenuation related to luminance level in the first display area are compensated, the luminance difference between the first display area and the second display area is eliminated, and the display effect of the display panel is improved.

Or, in some embodiments, after the duty ratio of the light emission control signal of the mth color sub-pixel in the first display area is obtained, the mth color sub-pixel in the first display area is driven to emit light based on the duty ratio of the light emission control signal of the mth color sub-pixel in the first display area, so that the luminance difference between the first display area and the second display area is eliminated, and the display effect of the display panel is improved.

Based on the compensation method of the display panel provided by the above embodiment, correspondingly, the application also provides a specific implementation manner of the compensation device of the display panel. As shown in fig. 10, a compensation apparatus 90 for a display panel provided in an embodiment of the present application includes the following modules:

a first obtaining module 901, configured to obtain in advance a plurality of first brightness compensation values of different gray scales in different use durations, a plurality of second brightness compensation values of different temperatures in different use durations, and a plurality of third brightness compensation values of different brightness levels in different use durations;

a second obtaining module 902, configured to obtain a current gray scale, a current temperature, a current brightness level, and a current usage duration of the first display area;

a first determining module 903, configured to respectively determine, when the current usage duration is greater than or equal to a preset first duration threshold, a first brightness compensation value corresponding to the current gray scale in the current usage duration, a second brightness compensation value corresponding to the current temperature in the current usage duration, and a third brightness compensation value corresponding to the current brightness level in the current usage duration according to a plurality of first brightness compensation values, a plurality of second brightness compensation values, and a plurality of third brightness compensation values that are obtained in advance;

a second determining module 904, configured to determine a data voltage compensation amount of the first display region or a duty ratio of the light emitting control signal according to a first brightness compensation value corresponding to the current gray scale in the current usage duration, a second brightness compensation value corresponding to the current temperature in the current usage duration, and a third brightness compensation value corresponding to the current brightness level in the current usage duration;

and the compensation module 905 is configured to perform brightness compensation on the first display region based on the data voltage compensation amount or the duty ratio of the light emitting control signal.

In some embodiments, the first obtaining module 901 may specifically be configured to: for any jth use duration in the test time period, acquiring initial brightness corresponding to the mth color sub-pixel in the ith gray scale and second brightness corresponding to the jth use duration of the mth color sub-pixel in the ith gray scale, wherein the ith gray scale is any gray scale, the mth color sub-pixel is any color sub-pixel, and i, m and j are positive integers; and determining a first brightness compensation value of the mth color sub-pixel in the jth use time length of the ith gray scale according to the initial brightness and the second brightness.

In some embodiments, the first obtaining module 901 may specifically be configured to:

In some embodiments, the test time period is a time period between a preset second time period threshold and a preset third time period threshold, and the third time period threshold is greater than the second time period threshold. The first obtaining module 901 may specifically be configured to: and obtaining a first brightness compensation value of the ith gray scale at the nth use time based on a linear interpolation algorithm and a plurality of first brightness compensation values of the ith gray scale at a plurality of use times in the test time, wherein the nth use time is any use time larger than a third time threshold, and n is a positive integer.

In some embodiments, the first obtaining module 901 may specifically be configured to: acquiring a plurality of first brightness attenuation parameters when the test display panel displays a target gray scale picture at a preset reference temperature and a plurality of second brightness attenuation parameters when the test display panel displays the target gray scale picture at an ith temperature, wherein each first brightness attenuation parameter corresponds to a first service duration, and each second brightness attenuation parameter corresponds to a second service duration; determining a first use time length corresponding to a first brightness attenuation parameter with the minimum difference with the reference brightness attenuation parameter by taking a second brightness attenuation parameter corresponding to the jth second use time length as the reference brightness attenuation parameter, wherein the jth second use time length is any second use time length, and j is a positive integer; and determining a second brightness compensation value of the ith temperature at the jth second use time according to the first use time, the jth second use time and a preset first adjustment parameter corresponding to the reference brightness attenuation parameter.

In some embodiments, the first obtaining module 901 may specifically be configured to: for any jth use time length in the test time period, acquiring a fourth brightness compensation value of different gray scales in the jth use time length, wherein i and j are positive integers; acquiring a fifth brightness compensation value of different duty ratios in the jth use time length, wherein the duty ratio is the duty ratio of a conducting level in the light-emitting control signal; and determining a third brightness compensation value of different gray scales and different duty ratios under the j-th use time length according to the fourth brightness compensation value and the fifth brightness compensation value.

In some embodiments, the first obtaining module 901 may specifically be configured to: acquiring a fourth brightness compensation value of a part of gray scale in a preset target gray scale range at the jth use time length and a brightness parameter of the part of gray scale at the jth use time length; establishing a first nonlinear regression model based on a fourth brightness compensation value of a part of gray scales at the jth use time length and a brightness parameter of the part of gray scales at the jth use time length; acquiring brightness parameters of other gray scales except for partial gray scales in the target gray scale range at the j-th use time; and obtaining fourth brightness compensation values of other gray scales at the jth use time length based on the first nonlinear regression model and the brightness parameters of the other gray scales at the jth use time length.

In some embodiments, the first obtaining module 901 may specifically be configured to: acquiring a fifth brightness compensation value of a part of duty ratio in a preset target duty ratio range in the jth use time and a brightness parameter of the part of duty ratio in the jth use time; establishing a second nonlinear regression model based on a fifth brightness compensation value of the partial duty ratio at the jth use time length and a brightness parameter of the partial duty ratio at the jth use time length; acquiring brightness parameters of other duty ratios except for partial duty ratios in a target duty ratio range in the j-th use time length; and obtaining fifth brightness compensation values of other duty ratios in the jth using time length based on the second nonlinear regression model and the brightness parameters of the other duty ratios in the jth using time length.

In some embodiments, the first obtaining module 901 may specifically be configured to: acquiring the brightness parameter variation of the test display panel after the jth use time under the pth duty ratio, wherein the pth duty ratio is any duty ratio in partial duty ratios, and p is a positive integer; acquiring a first time length required by the brightness parameter of the test display panel to reduce the brightness parameter variation under a preset reference duty ratio; and determining a fifth brightness compensation value of the p duty ratio in the j use time length according to the first time length, the j use time length and a preset second adjusting parameter.

In some embodiments, the first obtaining module 901 may specifically be configured to: and obtaining a first brightness compensation value of the ith gray scale and the qth duty cycle at the nth use time length based on a linear interpolation algorithm and a plurality of third brightness compensation values of the ith gray scale and the qth duty cycle at a plurality of use time lengths in the test time period, wherein the nth use time length is any use time length larger than a third time length threshold, and n is a positive integer.

Each module/unit in the apparatus shown in fig. 10 has a function of implementing each step in the above method embodiment, and can achieve the corresponding technical effect, and for brevity, no further description is provided here.

Based on the compensation method for the display panel provided by the embodiment, correspondingly, the application further provides a specific implementation manner of the electronic device. Please see the examples below.

Fig. 11 shows a hardware structure diagram of an electronic device provided in an embodiment of the present application.

The electronic device may include a processor 1001 and a memory 1002 that stores computer program instructions.

Specifically, the processor 1001 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement the embodiments of the present Application.

Memory 1002 may include mass storage for data or instructions. By way of example, and not limitation, memory 1002 may include a Hard Disk Drive (HDD), a floppy Disk Drive, flash memory, an optical Disk, a magneto-optical Disk, magnetic tape, or a Universal Serial Bus (USB) Drive or a combination of two or more of these. In one example, memory 1002 may include removable or non-removable (or fixed) media, or memory 1002 is non-volatile solid-state memory. The memory 1002 may be internal or external to the integrated gateway disaster recovery device.

In one example, the Memory 1002 may be a Read Only Memory (ROM). In one example, the ROM may be mask programmed ROM, programmable ROM (prom), erasable prom (eprom), electrically erasable prom (eeprom), electrically rewritable ROM (earom), or flash memory, or a combination of two or more of these.

The memory 1002 may include read-only memory (ROM), random-access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash-memory devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors), it is operable to perform operations described with reference to the methods according to an aspect of the application.

The processor 1001 reads and executes the computer program instructions stored in the memory 1002 to implement the steps in the above method embodiments, and achieve the corresponding technical effects achieved by the method/steps executed by the above method embodiments, which are not described herein again for brevity.

In one example, the electronic device may also include a communication interface 1003 and a bus 1010. As shown in fig. 10, the processor 1001, the memory 1002, and the communication interface 1003 are connected to each other via a bus 1010 to complete communication therebetween.

The communication interface 1003 is mainly used for implementing communication between modules, apparatuses, units and/or devices in this embodiment.

The bus 1010 includes hardware, software, or both to couple the components of the electronic device to one another. By way of example, and not limitation, a Bus may include an Accelerated Graphics Port (AGP) or other Graphics Bus, an Enhanced Industry Standard Architecture (EISA) Bus, a Front-Side Bus (Front Side Bus, FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) Bus, an infiniband interconnect, a Low Pin Count (LPC) Bus, a memory Bus, a Micro Channel Architecture (MCA) Bus, a Peripheral Component Interconnect (PCI) Bus, a PCI-Express (PCI-X) Bus, a Serial Advanced Technology Attachment (SATA) Bus, a video electronics standards association local (VLB) Bus, or other suitable Bus or a combination of two or more of these. Bus 1010 may include one or more buses, where appropriate. Although specific buses are described and shown in the embodiments of the application, any suitable buses or interconnects are contemplated by the application.

In addition, in combination with the compensation method of the display panel in the above embodiments, the embodiments of the present application may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement the compensation method of any one of the above embodiments. Examples of computer readable storage media include non-transitory computer readable storage media such as electronic circuits, semiconductor memory devices, ROMs, random access memories, flash memories, erasable ROMs (eroms), floppy disks, CD-ROMs, optical disks, and hard disks.

It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present application.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic Circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.

It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.

As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.

Claims

1. A compensation method for a display panel, the display panel comprising a first display area and a second display area, the method comprising:

the method comprises the steps of obtaining a plurality of first brightness compensation values of different gray scales under different using time lengths, a plurality of second brightness compensation values of different temperatures under different using time lengths and a plurality of third brightness compensation values of different brightness grades under different using time lengths in advance;

acquiring the current gray scale, the current temperature, the current brightness level and the current use duration of the first display area;

when the current use time length is greater than or equal to a preset first time length threshold value, respectively determining a first brightness compensation value corresponding to the current gray scale in the current use time length, a second brightness compensation value corresponding to the current temperature in the current use time length, and a third brightness compensation value corresponding to the current brightness level in the current use time length according to a plurality of first brightness compensation values, a plurality of second brightness compensation values, and a plurality of third brightness compensation values which are obtained in advance;

determining a data voltage compensation quantity of the first display area or a duty ratio of a light-emitting control signal according to a first brightness compensation value corresponding to the current gray scale in the current use duration, a second brightness compensation value corresponding to the current temperature in the current use duration and a third brightness compensation value corresponding to the current brightness level in the current use duration;

and performing brightness compensation on the first display area based on the data voltage compensation amount or the duty ratio of the light-emitting control signal.

2. The method according to claim 1, wherein the pre-obtaining a plurality of first luminance compensation values of different gray scales at different time periods of use comprises:

for any jth use duration in the test time period, acquiring initial brightness corresponding to the mth color sub-pixel in the ith gray scale and second brightness corresponding to the jth use duration of the mth color sub-pixel in the ith gray scale, wherein the ith gray scale is any gray scale, the mth color sub-pixel is any color sub-pixel, and i, m and j are positive integers;

determining a first brightness compensation value of the mth color sub-pixel in the jth use time length at the ith gray scale according to the initial brightness and the second brightness;

preferably, the determining a first brightness compensation value of the mth color sub-pixel in the jth use duration at the ith gray scale according to the initial brightness and the second brightness specifically includes:

3. The method of claim 2, wherein the test time period is a time period between a preset second time threshold and a preset third time threshold, and the third time threshold is greater than the second time threshold;

the pre-obtaining of the plurality of first brightness compensation values of different gray scales at different use durations specifically further includes:

and obtaining a first brightness compensation value of the mth color sub-pixel in the nth use time length in the ith gray scale based on a linear interpolation algorithm and the first brightness compensation values of the mth color sub-pixel in the ith gray scale in a plurality of use time lengths in the test time period, wherein the nth use time length is any use time length larger than the third time length threshold, and n is a positive integer.

4. The method according to claim 1, wherein the pre-obtaining a plurality of second brightness compensation values at different temperatures for different usage periods specifically comprises:

acquiring a plurality of first brightness attenuation parameters when a test display panel displays a target gray scale picture at a preset reference temperature and a plurality of second brightness attenuation parameters when the test display panel displays the target gray scale picture at an ith temperature, wherein each first brightness attenuation parameter corresponds to a first service life, and each second brightness attenuation parameter corresponds to a second service life;

determining the first use time length corresponding to the first brightness attenuation parameter with the minimum difference with the reference brightness attenuation parameter by taking the second brightness attenuation parameter corresponding to the jth second use time length as the reference brightness attenuation parameter, wherein the jth second use time length is any second use time length, and j is a positive integer;

determining a second brightness compensation value of the ith temperature at the jth second use time according to the first use time, the jth second use time and a preset first adjustment parameter corresponding to the reference brightness attenuation parameter;

preferably, the determining a second brightness compensation value of the ith temperature at the jth second usage time according to the first usage time, the jth second usage time and a preset first adjustment parameter corresponding to the reference brightness decay parameter specifically includes:

determining a second luminance compensation value for the ith temperature at the jth said second use duration in accordance with the following expression:

wherein, Gain_ij2 denotes a second luminance compensation value, T, of the ith temperature at the jth of the second use time duration_ij2 represents the first usage time length, T, corresponding to the reference brightness decay parameter_ij3 denotes the jth second usage time period, and k1 denotes a preset first adjustment parameter.

5. The method according to claim 1, wherein the pre-obtaining a plurality of third luminance compensation values of different luminance levels at different time periods of use specifically comprises:

for any jth use time length in the test time period, acquiring a fourth brightness compensation value of different gray scales at the jth use time length, wherein j is a positive integer;

acquiring a fifth brightness compensation value of different duty ratios when the j-th use time is long, wherein the duty ratios are duty ratios of conducting levels in the light-emitting control signals;

and determining the third brightness compensation value of different gray scales and different duty ratios under the j-th use duration according to the fourth brightness compensation value and the fifth brightness compensation value.

6. The method according to claim 5, wherein the obtaining a fourth brightness compensation value of the different gray scale at the jth usage time specifically comprises:

acquiring a fourth brightness compensation value of a part of gray scale in a preset target gray scale range at the jth use time and a brightness parameter of the part of gray scale at the jth use time;

establishing a first nonlinear regression model based on a fourth brightness compensation value of the part of gray scale in the jth use time length and a brightness parameter of the part of gray scale in the jth use time length;

acquiring brightness parameters of other gray scales in the target gray scale range except the partial gray scales at the j-th use time;

and obtaining a fourth brightness compensation value of the other gray scales at the jth use time length based on the first nonlinear regression model and the brightness parameters of the other gray scales at the jth use time length.

7. The method according to claim 5, wherein the obtaining a fifth brightness compensation value of different duty cycles at the jth usage time specifically comprises:

acquiring a fifth brightness compensation value of a part of duty ratio in a preset target duty ratio range in the jth use time and a brightness parameter of the part of duty ratio in the jth use time;

establishing a second nonlinear regression model based on a fifth brightness compensation value of the partial duty ratio at the jth use time and a brightness parameter of the partial duty ratio at the jth use time;

acquiring brightness parameters of other duty ratios except the partial duty ratio in the target duty ratio range in the j-th use time length;

obtaining a fifth brightness compensation value of the other duty ratios in the jth using time length based on the second nonlinear regression model and the brightness parameters of the other duty ratios in the jth using time length;

preferably, the obtaining a fifth brightness compensation value of a partial duty ratio in the preset target duty ratio range at the jth use time specifically includes:

acquiring the brightness parameter variation of the test display panel after the jth use time under the pth duty ratio, wherein the pth duty ratio is any duty ratio in the partial duty ratios, and p is a positive integer;

acquiring a first time length required by the brightness parameter of the test display panel to reduce the brightness parameter variation under a preset reference duty ratio;

and determining a fifth brightness compensation value of the p duty ratio in the j use time according to the first time length, the j use time length and a preset second adjusting parameter.

8. The method of claim 5, wherein the test time period is a time period between a preset second time threshold and a preset third time threshold, and the third time threshold is greater than the second time threshold;

the pre-obtaining of the plurality of third luminance compensation values of different luminance levels at different use durations specifically further includes:

and obtaining a third brightness compensation value of the ith gray scale and the qth duty cycle at the nth use time length based on a linear interpolation algorithm and the ith gray scale and the third brightness compensation values of the qth duty cycle at the multiple use time lengths in the test time period, wherein the nth use time length is any use time length larger than the third time length threshold, and n is a positive integer.

9. A compensation apparatus of a display panel, wherein the display panel includes a first display region and a second display region, the apparatus comprising:

the first acquisition module is used for acquiring a plurality of first brightness compensation values of different gray scales under different use time lengths, a plurality of second brightness compensation values of different temperatures under different use time lengths and a plurality of third brightness compensation values of different brightness grades under different use time lengths in advance;

the second acquisition module is used for acquiring the current gray scale, the current temperature, the current brightness level and the current use duration of the first display area;

a first determining module, configured to respectively determine, when the current usage duration is greater than or equal to a preset first duration threshold, a first brightness compensation value corresponding to the current gray scale in the current usage duration, a second brightness compensation value corresponding to the current temperature in the current usage duration, and a third brightness compensation value corresponding to the current brightness level in the current usage duration according to a plurality of first brightness compensation values, a plurality of second brightness compensation values, and a plurality of third brightness compensation values that are obtained in advance;

a second determining module, configured to determine a data voltage compensation amount or a duty ratio of a light emitting control signal in the first display area according to a first brightness compensation value corresponding to the current gray scale in the current usage duration, a second brightness compensation value corresponding to the current temperature in the current usage duration, and a third brightness compensation value corresponding to the current brightness level in the current usage duration;

and the compensation module is used for performing brightness compensation on the first display area based on the data voltage compensation quantity or the duty ratio of the light-emitting control signal.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the compensation method for a display panel according to any one of claims 1 to 8.