Compensation Method, Compensation Device, Display Device and Storage Medium for a Display Panel

Abstract

An embodiment of the present invention discloses a compensation method, a compensation device, a display device, and a storage medium for a display panel. The compensation method includes: using the first display gray level of the first display area as the reference display gray level, and obtaining the second display gray level of the second display area after the user adjusts the second display area; determining a difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level; determining the compensation start duration of the second display area according to the difference coefficient and a pre-stored display compensation curve of the second display area; the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area; compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve. The embodiment of the present invention can preferably compensate the brightness difference between the first display area and the second display area and improve the display effect.

Description

Technical Field

[0001] Embodiments of the present invention relate to display technologies, and particularly to a compensation method for a display panel, a compensation device, a display device, and a storage medium. Background Art

[0002] With the development of display technologies, people have higher and higher requirements for the screen-to-body ratio of display panels, and full-screen display panels have emerged as the times require. A full-screen display panel generally includes a first display area and a second display area. The second display area has a relatively high light transmittance, and optical sensors such as cameras are disposed in the second display area.

[0003] In existing full-screen display panels, there is a large brightness difference between the first display area and the second display area as the usage time increases, which affects the display effect. Summary of the Invention

[0004] The present invention provides a compensation method for a display panel, a compensation device, a display device, and a storage medium to achieve better compensation for the brightness difference between the first display area and the second display area and improve the display effect.

[0005] In a first aspect, an embodiment of the present invention provides a compensation method for a display panel, which is applied to a display panel. The display panel includes a first display area and a second display area, and the light transmittance of the second display area is different from that of the first display area;

[0006] The method includes:

[0007] Taking a first display gray level of the first display area as a reference display gray level, and obtaining a second display gray level of the second display area after a user adjusts the second display area;

[0008] Determining a difference coefficient between the second display area and the first display area of the display panel at a current usage time according to the first display gray level and the second display gray level;

[0009] Determining a compensation start time of the second display area according to the difference coefficient and a pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage time of the second display area and the difference coefficient between the second display area and the first display area;

[0010] Compensating the second display area from the current moment according to the usage time of the display panel, the compensation start time, and the display compensation curve.

[0011] Optionally, the determining a difference coefficient between the second display area and the first display area of the display panel at a current usage time according to the first display gray level and the second display gray level includes:

[0012] Coefficient of difference = (Second display gray level - First display gray level) / First display gray level.

[0013] Optionally, before taking the first display gray level of the first display area as the reference display gray level and obtaining the second display gray level of the second display area after the user adjusts the second display area, it further includes:

[0014] Obtaining a brightness adjustment instruction of the user, and adjusting the display brightness of the second display area according to the brightness adjustment instruction;

[0015] Obtaining a chromaticity adjustment instruction of the user, and adjusting the display chromaticity of the second display area according to the chromaticity adjustment instruction;

[0016] When receiving a confirmation instruction from the user or when the user no longer inputs a brightness adjustment instruction and a chromaticity adjustment instruction, it is determined that the display adjustment is completed.

[0017] Optionally, the compensating the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment includes:

[0018] Determining the actual coefficient of difference between the second display area and the first display area corresponding to the usage duration according to the compensation start duration and the usage duration of the display panel;

[0019] Determining the actual display gray level of the second display area according to the actual coefficient of difference and the to-be-displayed set gray level of the second display area;

[0020] Adjusting the data driving signal or the light emitting control signal of the second display area according to the actual display gray level.

[0021] Optionally, the first display gray level includes n first sub-display gray levels, n is a positive integer greater than or equal to 2, and the differences between the n first sub-display gray levels are all greater than a set threshold;

[0022] Taking the first display gray level of the first display area as the reference display gray level and obtaining the second display gray level of the second display area after the user adjusts the second display area includes: respectively taking each first sub-display gray level of the first display area as the reference display gray level and obtaining the second sub-display gray level of the second display area after the user adjusts the second display area;

[0023] Determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: for each of the first sub-display gray levels, determining the first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-display gray level at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level;

[0024] Determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: for each of the first sub-display gray levels, determining the first sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the pre-stored display compensation curve of the second display area;

[0025] Compensating the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment includes: compensating the second display area from the current moment according to the gray level to be displayed, the usage duration of the display panel, the first sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve.

[0026] Optionally, the first display gray level includes n first sub-display gray levels, where n is a positive integer greater than or equal to 2, and the differences between the n first sub-display gray levels are all greater than a set threshold;

[0027] Taking the first display gray level of the first display area as the reference display gray level and obtaining the second display gray level of the second display area after the user adjusts the second display area includes: respectively taking each of the first sub-display gray levels of the first display area as the reference display gray level and obtaining the second sub-display gray level of the second display area after the user adjusts the second display area;

[0028] Determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: for each of the first sub-display gray levels, determining the first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-display gray level at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level;

[0029] Determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: The display panel includes m different display compensation curves, and one display compensation curve corresponds to at least one first sub-display gray level, where m is a positive integer less than or equal to n; For each of the first sub-display gray levels, determine the second sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the corresponding display compensation curve;

[0030] Compensating the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment includes:

[0031] Determine the second sub-compensation start duration corresponding to the gray level to be displayed in the second display area and the corresponding display compensation curve;

[0032] Compensate the second display area from the current moment according to the gray level to be displayed, the usage duration of the display panel, the second sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve corresponding to the gray level to be displayed.

[0033] Optionally, the display panel includes sub-pixels of at least three different emission colors, and each display compensation curve includes at least three different sub-display compensation curves. One sub-display compensation curve corresponds to the sub-pixels of one emission color, and different sub-display compensation curves correspond to sub-pixels of different emission colors;

[0034] Determining the difference coefficient between the second display area and the first display area of the display panel at the current usage duration according to the first display gray level and the second display gray level includes: For the sub-pixels of each emission color, determine the second sub-difference coefficient between the second display area and the first display area corresponding to the sub-pixels of the emission color at the current usage duration of the display panel according to the first display gray level and the second display gray level;

[0035] Determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: For the sub-pixels of each emission color, determine the third sub-compensation start duration corresponding to the sub-pixels of the color according to the second sub-difference coefficient corresponding to the sub-pixels of the color and the sub-display compensation curve corresponding to the sub-pixels of the color;

[0036] Compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve; including: for each sub-pixel of each emission color, compensating the sub-pixels of the second display area of this color from the current moment according to the usage duration of the display panel, the third sub-compensation start duration corresponding to the sub-pixels of this color, and the sub-display compensation curve corresponding to the sub-pixels of this color.

[0037] In a second aspect, an embodiment of the present invention further provides a compensation device for a display panel, the display panel includes a first display area and a second display area, and the light transmittance of the second display area is different from that of the first display area;

[0038] The compensation device for the display panel includes:

[0039] A gray scale acquisition module, configured to use the first display gray scale of the first display area as a reference display gray scale, and acquire the second display gray scale of the second display area after the user adjusts the second display area;

[0040] A difference coefficient determination module, configured to determine the difference coefficient between the second display area and the first display area under the current usage duration of the display panel according to the first display gray scale and the second display gray scale;

[0041] A compensation start duration determination module, configured to determine the compensation start duration of the second display area according to the difference coefficient and a pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area;

[0042] A compensation module, configured to compensate the second display area from the current moment according to the usage duration of the second display area, the compensation start duration, and the display compensation curve.

[0043] In a third aspect, an embodiment of the present invention further provides a display device, including a display panel and the compensation device for the display panel according to any embodiment of the present invention;

[0044] It further includes an optical sensor, the optical sensor is correspondingly arranged on the non-light-emitting side of the second display area of the display panel, and the optical sensor includes a camera.

[0045] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the compensation method for the display panel according to any embodiment of the present invention.

[0046] In this embodiment, the compensation start duration is determined according to the difference coefficient between the second display area and the first display area at the current moment and the display compensation curve. Starting from the current moment, the second display area is compensated according to the usage duration of the display panel, the compensation start duration, and the display compensation curve. Since the compensation start duration is determined according to the difference coefficient corresponding to the current usage duration, the usage duration of the display panel can be corrected by using the compensation start duration during compensation, so that the difference coefficient determined according to the display compensation curve during compensation is more in line with the actual difference between the second display area and the first display area, and the second display area can be better compensated, reducing the brightness difference between the first display area and the second display area and improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic diagram of a display panel provided by an embodiment of the present invention;

[0048] Figure 2 is a flowchart of a compensation method for a display panel provided by an embodiment of the present invention;

[0049] Figure 3 is a schematic diagram of a display compensation curve provided by an embodiment of the present invention;

[0050] Figure 4 is a flowchart of another compensation method for a display panel provided by an embodiment of the present invention;

[0051] Figure 5 is a schematic diagram of a compensation device for a display panel provided by an embodiment of the present invention;

[0052] Figure 6 is a schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, not all structures.

[0054] As mentioned in the background art, there is a large brightness difference between the first display area and the second display area in the existing full-screen display panel as the usage time increases, which affects the display effect. The inventors have found through research that the reason for this problem is that: as the usage time of the display panel increases, the aging degrees of the first display area and the second display area are different, resulting in a brightness difference between the first display area and the second display area as the usage time increases, and the brightness differences between the first display area and the second display area of different display panels are different, making the existing compensation methods unable to compensate well for the brightness difference between the first display area and the second display area.

[0055] Based on the above problems, an embodiment of the present invention provides a compensation method for a display panel, which is applied to the display panel. Figure 1 It is a schematic diagram of a display panel provided by an embodiment of the present invention. Refer to Figure 1 , the display panel includes a first display area 11 and a second display area 12, and the light transmittance of the second display area 12 is different from that of the first display area 11.

[0056] Among them, the first display area 11 can be the main display area of the display panel, the second display area 12 is the transparent display area of the display panel, and both the first display area 11 and the second display area 12 can display images. Optionally, the light transmittance of the second display area 12 can be greater than that of the first display area 11, and an optical sensor can be correspondingly arranged on the non-light-emitting side of the second display area 12. The optical sensor includes optical devices such as a camera.

[0057] Figure 2 It is a flowchart of a compensation method for a display panel provided by an embodiment of the present invention. Refer to Figure 2 , the compensation method includes:

[0058] S110: Use the first display gray level of the first display area as the reference display gray level, and obtain the second display gray level of the second display area after the user adjusts the second display area.

[0059] Among them, if the user is not satisfied with the display effect of the second display area during use, the user can manually adjust the display brightness and / or chromaticity of the second display area. A brightness adjustment bar and a chromaticity adjustment bar are set for the second display area in the display panel. The user adjusts the display of the second display area by dragging the brightness adjustment bar and the chromaticity adjustment bar of the second display area until the user is satisfied with the display effect of the second display area, or the display effects of the second display area and the first display area are the same. The second display gray level is the actual display gray level of the second display area when the user stops adjusting.

[0060] In addition, the user can adjust the display effect of the second display area when a certain first display gray level is displayed in the first display area of the display panel, or can adjust the display effect of the second display area when multiple different first display gray levels are respectively displayed in the first display area. Exemplarily, the user can adjust the display effect of the second display area with a certain high gray level (such as 245 gray level) displayed in the first display area as the reference display gray level, or can adjust the display effect of the second display area with a certain low gray level (such as 80 gray level) displayed in the first display area as the reference display gray level. For example, the user can adjust the display of the second display area when the first first display gray level is displayed in the first display area to obtain a set of first display gray levels and second display gray levels, and then adjust the display of the second display area when the second first display gray level is displayed in the first display area to obtain the second display gray level corresponding to the second first display gray level, and so on, to complete the display adjustment for multiple different first display gray levels.

[0061] S120. Determine the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level.

[0062] Specifically, the usage duration is the cumulative lighting duration after the display panel is lit for the first time after leaving the factory. The current usage duration is the cumulative lighting duration of the display panel at the current moment. The difference coefficient reflects the display difference between the first display area and the second display area at the current moment. When the user adjusts the display effect of the second display area when multiple different first display gray levels are respectively displayed in the first display area, multiple second display gray levels corresponding to multiple different first display gray levels can be obtained after the adjustment, and multiple difference coefficients can be obtained according to the multiple different first display gray levels and the second display gray levels respectively corresponding to the multiple different first display gray levels.

[0063] S130. Determine the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve, where the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area.

[0064] S140. Compensate the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve.

[0065] Specifically, Figure 3 is a schematic diagram of a display compensation curve provided by an embodiment of the present invention. Refer to Figure 3, the display compensation curve reflects the change in the coefficient of difference between the second display area and the first display area as the usage duration increases. Other display panels of the same type as the display panel can be tested to obtain the display compensation curve, and the display compensation curve can also be obtained by statistically analyzing the historical display data of other display panels of the same type as the display panel.

[0066] Determine the compensation start duration of the second display area based on the coefficient of difference and the pre-stored display compensation curve. The usage duration corresponding to the coefficient of difference can be found on the display compensation curve, and this usage duration is determined as the compensation start duration.

[0067] Compensate the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve. The usage duration of the second display area can be corrected according to the compensation start duration to obtain the actual equivalent usage duration. The corresponding coefficient of difference is found on the display compensation curve according to the actual equivalent usage duration, and the second display area is compensated according to this coefficient of difference. Exemplarily, the first difference between the usage duration of the display panel (the cumulative usage duration of the display panel at any compensation moment after the current moment) and the current usage duration corresponding to the current moment can be calculated, and the sum of the first difference and the compensation start duration is obtained as the actual equivalent usage duration. The coefficient of difference corresponding to the actual equivalent usage duration is determined on the display compensation curve, and the actual display gray level of the second display area is determined according to the coefficient of difference corresponding to the actual equivalent usage duration and the gray level to be displayed in the second display area. The difference between the actual display gray level and the gray level to be displayed in the second display area is the compensation value of the second display area. Or, the second difference between the compensation start duration and the current usage duration is determined, and the sum of the usage duration of the display panel and the second difference is obtained as the actual equivalent usage duration. The coefficient of difference corresponding to the actual equivalent usage duration is determined on the display compensation curve, and the actual display gray level of the second display area is determined according to the coefficient of difference corresponding to the actual equivalent compensation duration and the gray level to be displayed in the second display area.

[0068] Compensate the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve. It is also possible to reset the usage duration of the display panel to zero from the current moment, start timing the usage duration of the display panel again, determine the position corresponding to the compensation start duration as the starting compensation zero point, and find the corresponding coefficient of difference on the display compensation curve according to the re-timed usage duration each time for compensation, and compensate the second display area according to this coefficient of difference.

[0069] The display compensation curve can be pre-stored in the display panel during the manufacture of the display panel, and the driving chip of the display panel compensates the second display area according to the display compensation curve. Since the aging degrees of the second display areas of different display panels are different with the increase of the usage time, the display compensation curve cannot compensate the second display area well with the increase of the usage duration, resulting in a large display difference between the first display area and the second display area of the display panel.

[0070] In this embodiment, the compensation start duration is determined according to the difference coefficient between the second display area and the first display area at the current moment and the display compensation curve. Starting from the current moment, the second display area is compensated according to the usage duration of the display panel, the compensation start duration, and the display compensation curve. Since the compensation start duration is determined according to the difference coefficient corresponding to the current usage duration, the usage duration of the display panel can be corrected by using the compensation start duration during compensation, so that the difference coefficient determined according to the display compensation curve during compensation is more in line with the actual difference between the second display area and the first display area, and the second display area can be better compensated, reducing the brightness difference between the first display area and the second display area and improving the display effect.

[0071] It should be noted that a display compensation curve can be pre-stored in the display panel. When the user adjusts the display effect of the second display area only based on a certain first display gray level of the first display area as the reference display gray level, a set of first display gray levels and second display gray levels are obtained, and thus a difference coefficient can be obtained. A compensation start duration can be determined according to the difference coefficient and the display compensation curve. When the user adjusts the display effect of the second display area based on multiple different first display gray levels of the first display area as the reference display gray levels, multiple difference coefficients are obtained according to different reference display gray levels, and multiple compensation start durations are determined according to the multiple difference coefficients and the display compensation curve. When the display panel is displaying, the corresponding compensation start duration is selected according to the gray level to be displayed on the display panel, and the second display area is compensated according to the corresponding compensation start duration and the display compensation curve.

[0072] Optionally, determining the difference coefficient between the first display area and the second display area at the current moment according to the first display gray level and the second display gray level includes: difference coefficient = (second display gray level - first display gray level) / first display gray level.

[0073] Specifically, both the first display gray level and the second display gray level can be the white screen gray levels, that is, the comprehensive display gray levels of the red sub-pixels, the green sub-pixels, and the blue sub-pixels. After the brightness adjustment and the chromaticity adjustment are both completed, the second display gray level can be obtained by converting the display gray levels of the red sub-pixels, the green sub-pixels, and the blue sub-pixels according to the chromaticity formula. The corresponding display compensation curve can be the compensation curve of the white gray level.

[0074] The first display gray level and the second display gray level may both be the display gray levels of monochromatic sub-pixels. For example, the first display gray level and the second display gray level may both be the display gray levels of red sub-pixels, the first display gray level and the second display gray level may both be the display gray levels of green sub-pixels, and the first display gray level and the second display gray level may both be the display gray levels of blue sub-pixels. Correspondingly, the display compensation curve may be a monochromatic compensation curve.

[0075] Optionally, Figure 4 is a flowchart of another display panel compensation method provided by an embodiment of the present invention. Refer to Figure 4 , the display panel compensation method includes:

[0076] S101. Obtain a brightness adjustment instruction of a user, and adjust the display brightness of a second display area according to the brightness adjustment instruction.

[0077] Specifically, a brightness adjustment bar may be provided in the display panel. When the user drags the brightness adjustment bar, the display panel obtains the brightness adjustment instruction and adjusts the display brightness of the second display area according to the dragging amount. In addition, a brightness adjustment box may also be provided in the display panel. The user can input an adjusted gray level value or brightness value. After the input is completed, the display panel obtains the brightness adjustment instruction and adjusts the display brightness of the second display area according to the gray level value or brightness value.

[0078] S102. Obtain a chromaticity adjustment instruction of the user, and adjust the display chromaticity of the second display area according to the chromaticity adjustment instruction.

[0079] Specifically, a chromaticity adjustment bar may be provided in the display panel. When the user drags the chromaticity adjustment bar, the display panel obtains the chromaticity adjustment instruction and adjusts the display chromaticity of the second display area according to the dragging amount. In addition, a chromaticity adjustment box may also be provided in the display panel. The user can input an adjusted chromaticity value or gray level value. After the input is completed, the display panel obtains the chromaticity adjustment instruction and adjusts the display chromaticity of the second display area according to the gray level value or chromaticity value. It should be noted that this embodiment only exemplarily shows several forms of adjusting chromaticity and brightness, and is not a limitation on the present invention. There may be other adjustment methods in other embodiments. In addition, in this embodiment, the user can select to adjust only the brightness, only the chromaticity, or both the chromaticity and the brightness as needed. When the user only adjusts the brightness, the display panel can only obtain the brightness adjustment instruction. When the user only adjusts the chromaticity, the display panel can only obtain the chromaticity adjustment instruction. When the user adjusts both the chromaticity and the brightness at the same time, the display panel can obtain both the chromaticity adjustment instruction and the brightness adjustment instruction.

[0080] S103. When receiving a confirmation instruction from the user or when the user no longer inputs the brightness adjustment instruction and the chromaticity adjustment instruction, it is determined that the display adjustment is completed.

[0081] Specifically, after the user is satisfied with the display effects of the first display area and the second display area, the brightness adjustment and chromaticity adjustment can be stopped. The display panel can be provided with a confirmation button. After the user finishes the adjustment and clicks the confirmation button, the display panel receives the confirmation instruction, indicating that the display adjustment is completed. Or within a set time, if the user no longer performs brightness adjustment and chromaticity adjustment, it is confirmed that the display adjustment is completed.

[0082] S110: Display gray levels with the first display gray level of the first display area as a reference, and obtain the second display gray level of the second display area after the user adjusts the second display area.

[0083] S120: Determine the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level.

[0084] S130: Determine the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area.

[0085] S140: Starting from the current moment, compensate the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve.

[0086] In this embodiment, the user can perform display adjustment on the first display area and the second display area at any time according to needs, that is, can re-determine the compensation start duration at any time, and can adjust the display effect of the display panel at any time. The operation process is simple, improving the user experience.

[0087] Optionally, compensating the second display area starting from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve includes:

[0088] Determine the actual difference coefficient between the second display area and the first display area corresponding to the usage duration according to the compensation start duration and the usage duration of the display panel;

[0089] Determine the actual display gray level of the second display area according to the actual difference coefficient and the to-be-displayed gray level of the second display area;

[0090] Compensate the second display according to the actual display gray level.

[0091] Specifically, the gray scale to be displayed is the gray scale that the second display area is about to display, and the actual displayed gray scale is the gray scale of the second display area after compensation. The usage duration of the second display area can be corrected according to the starting duration of compensation to obtain the actual equivalent usage duration. The actual difference coefficient is determined by looking up the corresponding difference coefficient on the display compensation curve according to the actual equivalent usage duration. The actual displayed gray scale of the second display area is calculated according to the actual difference coefficient and the difference coefficient.

[0092] Optionally, compensating the second display according to the actual displayed gray scale includes: adjusting the data driving signal or the light emission control signal of the second display area according to the actual displayed gray scale.

[0093] Specifically, the data driving signal is the driving voltage signal written into the sub-pixel through the data line. The data driving signal of the sub-pixel to be compensated in the second display area can be directly adjusted according to the actual displayed gray scale, so that the data driving signal of the sub-pixel to be compensated in the second display area is equal to the data driving signal of the actual displayed gray scale, so that the sub-pixel to be compensated displays the brightness corresponding to the actual displayed gray scale, and the display difference between the second display area and the first display area is reduced.

[0094] In addition, the light emission control signal is the signal input into the sub-pixel through the light emission control line. The light emission control signal is used to control the light emission duration of the sub-pixel. By adjusting the duty cycle of the light emission control signal, the light emission duration of each frame of the sub-pixel to be compensated can be adjusted, so as to adjust the display brightness of the sub-pixel to be compensated, so that the sub-pixel to be compensated displays the brightness corresponding to the actual displayed gray scale, and the display difference between the second display area and the first display area is reduced.

[0095] Optionally, the first displayed gray scale includes n first sub-displayed gray scales, where n is a positive integer greater than or equal to 2, and the differences between the n first sub-displayed gray scales are all greater than the set threshold; taking the first displayed gray scale of the first display area as the reference displayed gray scale, obtaining the second displayed gray scale of the second display area after the user adjusts the second display area includes: taking each of the first sub-displayed gray scales of the first display area as the reference displayed gray scale, and obtaining the second sub-displayed gray scale of the second display area after the user adjusts the second display area.

[0096] Determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first displayed gray scale and the second displayed gray scale includes: for each first sub-displayed gray scale, determining the first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-displayed gray scale at the current usage duration of the display panel according to the first sub-displayed gray scale and the second sub-displayed gray scale corresponding to the first sub-displayed gray scale.

[0097] Determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: for each first sub-display gray level, determining the first sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the pre-stored display compensation curve of the second display area.

[0098] Compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve includes: compensating the second display area from the current moment according to the gray level to be displayed, the usage duration of the display panel, the first sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve.

[0099] Specifically, the first first sub-display gray level of the first display area can be used as the reference gray level to obtain the first second sub-display gray level of the second display area after the user adjusts the second display area; the second first sub-display gray level of the first display area can be used as the reference gray level to obtain the second second sub-display gray level of the second display area after the user adjusts the second display area; and so on, until the nth first sub-display gray level of the first display area is used as the reference gray level to obtain the nth second sub-display gray level of the second display area after the user adjusts the second display area.

[0100] Then, determine the first first sub-difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first first sub-display gray level and the first second sub-display gray level; determine the second first sub-difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the second first sub-display gray level and the second second sub-display gray level; and so on, until the nth first sub-difference coefficient between the second display area and the first display area at the current usage duration of the display panel is determined according to the nth first sub-display gray level and the nth second sub-display gray level.

[0101] Respectively determine the n first sub-compensation start durations of the second display area according to the first first difference coefficient, the second first difference coefficient... and the nth first difference coefficient and the pre-stored display compensation curve.

[0102] The first sub-compensation start duration corresponding to the gray level to be displayed is the first sub-compensation start duration corresponding to the first sub-display gray level closest to the gray level to be displayed. When compensating, the difference between the gray level to be displayed and each first sub-display gray level can be calculated to determine the first sub-display gray level closest to the gray level to be displayed, so as to determine the corresponding first sub-compensation start duration. In addition, a gray level range can be set for each first sub-display gray level. When compensating, the first sub-display gray level corresponding to the gray level to be displayed can be directly determined according to the gray level range to which the gray level to be displayed belongs, so as to determine the corresponding first sub-compensation start duration. After determining the first sub-compensation start duration corresponding to the gray level to be compensated and displayed, the usage duration of the display panel is corrected according to the first sub-compensation start duration to obtain the actual equivalent usage duration, so as to compensate the second display area.

[0103] Since the display differences between the first display area and the second display area are different under different gray levels, at least two different first sub-difference coefficients are obtained by performing display adjustment on the second display area with multiple different first sub-display gray levels in the first display area as the reference display gray levels. The at least two different first sub-difference coefficients respectively reflect the display differences between the second display area and the first display area when the first display area displays the corresponding first sub-display gray level.

[0104] The display panel can be set with only one display compensation curve. The first sub-compensation start duration corresponding to each first sub-difference coefficient is obtained through each first sub-difference coefficient and the display compensation curve respectively. Each first sub-compensation start duration compensates the gray level range where its corresponding first sub-display gray level is located. Since each first sub-difference coefficient can accurately reflect the display difference between the first display area and the second display area under its corresponding first sub-display gray level, the first sub-compensation start duration obtained through the first sub-difference coefficient can better reflect the actual equivalent usage duration of the second display area at the current usage duration. The actual equivalent usage duration determined according to the first sub-compensation start duration and the usage duration and the display compensation curve can better compensate the display differences between the first display area and the second display area within the gray level range where its corresponding first sub-display gray level is located, so as to perform better compensation when different gray levels to be displayed are shown in the second display area, reduce the display differences between the first display area and the second display area, and improve the display effect.

[0105] Optionally, the first display gray level includes n first sub-display gray levels; taking the first display gray level in the first display area as the reference display gray level, obtaining the second display gray level of the second display area after the user adjusts the second display area includes: taking each first sub-display gray level in the first display area as the reference display gray level respectively, and obtaining the second sub-display gray level of the second display area after the user adjusts the second display area;

[0106] Determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: for each first sub-display gray level, determining the first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-display gray level at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level;

[0107] Determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: the display panel includes m different display compensation curves, and one display compensation curve corresponds to at least one first sub-display gray level, where m is a positive integer less than or equal to n; for each first sub-display gray level, determining the second sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the corresponding display compensation curve;

[0108] Compensating the second display area according to the usage duration, compensation start duration and display compensation curve of the display panel starting from the current moment includes: determining the second sub-compensation start duration corresponding to the gray level to be displayed in the second display area and the corresponding display compensation curve; starting from the current moment, compensating the second display area according to the usage duration of the display panel, the gray level to be displayed, the second sub-compensation start duration corresponding to the gray level to be displayed and the display compensation curve corresponding to the gray level to be displayed.

[0109] Specifically, it can be set that each first sub-display gray level corresponds to a display compensation curve, and the display compensation curve compensates the gray level range of the first sub-display gray level. Since the aging differences between the second display area and the first display area in different gray level ranges are different, by setting a corresponding display compensation curve for each first sub-display gray level, that is, setting a corresponding display compensation curve for each gray level range, the second display area can be better compensated. By using the first sub-difference coefficient corresponding to each first sub-display gray level and the display compensation curve corresponding to the first sub-display gray level to obtain the corresponding second sub-compensation start duration, each gray level within the gray level range corresponding to the first sub-display gray level can be better compensated according to the corresponding second sub-compensation start duration and the display compensation curve, so that better compensation can be performed when different gray levels to be displayed are shown in the second display area, further reducing the difference between the first display area and the second display area and improving the display effect.

[0110] Specifically, when performing compensation, the gray level range where the gray level to be displayed (the gray level about to be displayed) in the second display area can be determined first. According to this gray level range, the corresponding display compensation curve and the second sub-compensation start duration can be determined. According to the corresponding second sub-compensation start duration, usage duration, and the corresponding display compensation curve, the actual difference coefficient between the second display area and the first display area can be determined. According to the actual difference coefficient and the gray level to be displayed, the actual displayed gray level after compensation for the second display area can be obtained.

[0111] In addition, due to the aging differences between the first display area and the second display area under different gray levels, and the greater the gray level difference, the more different the aging differences between the first display area and the second display area. Exemplarily, the difference coefficient when the first display area and the second display area display the first gray level is a, and the difference coefficient when displaying the second gray level is b. The greater the difference between the first gray level and the second gray level, the greater the difference between a and b. In this embodiment, by setting the difference between n first sub-display gray levels to be greater than a set threshold, the n second sub-compensation start durations and display compensation curves obtained by performing display adjustment on the second display area with these n first sub-display gray levels as the reference display gray levels can respectively compensate for the gray level ranges corresponding to these n first sub-display gray levels, can perform targeted compensation for different gray level ranges, better compensate for the differences between the second display area and the first display area, and improve the display effect.

[0112] Optionally, the display panel includes sub-pixels of at least three different light-emitting colors. Each display compensation curve includes at least three different sub-display compensation curves. One sub-display compensation curve corresponds to sub-pixels of one light-emitting color, and different sub-display compensation curves correspond to sub-pixels of different light-emitting colors; determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: for each light-emitting color of sub-pixels, determining the second sub-difference coefficient between the second display area and the first display area corresponding to the sub-pixels of this light-emitting color at the current usage duration of the display panel according to the first display gray level and the second display gray level.

[0113] Among them, the first display gray level and the second display gray level can be white gray levels. At this time, according to the first display gray level, the second display gray level, and the chromaticity formula, the gray levels of each light-emitting color sub-pixels in the first display area and the second display area can be obtained. According to the displayed gray levels of the same-color sub-pixels in the first display area and the second display area, the second sub-difference coefficient of this color can be obtained. The first display gray level and the second display gray level can also be monochromatic display gray levels. At this time, the second sub-difference coefficient between the first display area and the second display area of the sub-pixels of this color can be directly obtained according to the first display gray level and the second display gray level.

[0114] Determine the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area, including: for the sub-pixels of each emission color, determine the third sub-compensation start duration corresponding to the sub-pixels of this color according to the second sub-difference coefficient corresponding to the sub-pixels of this color and the sub-display compensation curve corresponding to the sub-pixels of this color.

[0115] Compensate the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment; including: for the sub-pixels of each emission color, compensate the sub-pixels of this color in the second display area from the current moment according to the usage duration of the display panel, the third sub-compensation start duration corresponding to the sub-pixels of this color, and the sub-display compensation curve corresponding to the sub-pixels of this color.

[0116] Exemplarily, the display panel may include red-emitting sub-pixels, green-emitting sub-pixels, and blue-emitting sub-pixels, and the display compensation curve may include a red sub-compensation curve, a green sub-compensation curve, and a blue sub-compensation curve.

[0117] In this embodiment, by storing the corresponding sub-display compensation curve for each emission color sub-pixel, and determining the third sub-compensation start duration corresponding to the sub-pixels of this color according to the second sub-difference coefficient corresponding to the sub-pixels of this color and the sub-display compensation curve corresponding to the sub-pixels of this color, for the sub-pixels of each emission color, compensate the sub-pixels of this color in the second display area from the current moment according to the usage duration of the display panel, the third sub-compensation start duration corresponding to the sub-pixels of this color, and the sub-display compensation curve corresponding to the sub-pixels of this color, it is possible to perform targeted compensation for the sub-pixels of each color, and further reduce the display difference between the first display area and the second display area.

[0118] An embodiment of the present invention also provides a compensation device for a display panel. The display panel includes a first display area and a second display area, and the light transmittance of the second display area is different from that of the first display area.

[0119] Figure 5 is a schematic diagram of a compensation device for a display panel provided by an embodiment of the present invention. Refer to Figure 5 , the compensation device 300 of the display panel includes:

[0120] A gray-scale acquisition module 210, configured to display a gray scale based on the first display gray scale of the first display area, and acquire the second display gray scale of the second display area after the user adjusts the second display area;

[0121] A difference coefficient determination module 220, configured to determine the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray scale and the second display gray scale;

[0122] A compensation start duration determination module 230, configured to determine a compensation start duration of the second display area according to a difference coefficient and a pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area;

[0123] A compensation module 240, configured to compensate the second display area according to the usage duration of the second display area, the compensation start duration, and the display compensation curve from the current moment.

[0124] In an optional embodiment, the first display gray level includes n first sub-display gray levels, where n is a positive integer greater than or equal to 2, and the differences between the n first sub-display gray levels are all greater than a set threshold; the gray level acquisition module 210 is specifically configured to use each of the first sub-display gray levels of the first display area as a reference display gray level, and acquire the second sub-display gray level of the second display area after the user adjusts the second display area; the difference coefficient determination module 220 is specifically configured to, for each of the first sub-display gray levels, determine a first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-display gray level at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level; the compensation start duration determination module 230 is specifically configured to, for each of the first sub-display gray levels, determine a first sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the pre-stored display compensation curve of the second display area; the compensation module 240 is specifically configured to compensate the second display area according to the gray level to be displayed, the usage duration of the display panel, the first sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve from the current moment.

[0125] In an optional embodiment, the first display gray level includes n first sub-display gray levels, where n is a positive integer greater than or equal to 2, and the differences between the n first sub-display gray levels are all greater than a set threshold; the gray level acquisition module 210 is specifically configured to use each first sub-display gray level in the first display area as a reference display gray level to acquire the second sub-display gray level of the second display area after the user adjusts the second display area; the difference coefficient determination module 220 is specifically configured to, for each first sub-display gray level, determine the first sub-difference coefficient between the second display area and the first display area corresponding to the first sub-display gray level at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level; the display panel includes m different display compensation curves, and one display compensation curve corresponds to at least one first sub-display gray level, where m is a positive integer less than or equal to n; the compensation start duration determination module 230 is specifically configured to, for each first sub-display gray level, determine the second sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the corresponding display compensation curve; the compensation module 240 includes: a duration and curve determination unit, configured to determine the second sub-compensation start duration and the corresponding display compensation curve of the gray level to be displayed in the second display area; a first compensation subunit, configured to compensate the second display area according to the gray level to be displayed, the usage duration of the display panel, the second sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve corresponding to the gray level to be displayed.

[0126] In an optional embodiment, the difference coefficient = (the second display gray level - the first display gray level) / the first display gray level.

[0127] In an optional embodiment, the compensation device further includes:

[0128] a brightness adjustment module, configured to acquire a brightness adjustment instruction from the user and adjust the display brightness of the second display area according to the brightness adjustment instruction;

[0129] a chromaticity adjustment module, configured to acquire a chromaticity adjustment instruction from the user and adjust the display chromaticity of the second display area according to the chromaticity adjustment instruction;

[0130] an adjustment completion determination module, configured to determine that the display adjustment is completed when receiving a confirmation instruction from the user or when the user no longer inputs a brightness adjustment instruction and a chromaticity adjustment instruction.

[0131] In an optional embodiment, the compensation module 240 includes:

[0132] an actual difference coefficient determination unit, configured to determine the actual difference coefficient between the second display area and the first display area corresponding to the usage duration according to the compensation start duration and the usage duration of the display panel;

[0133] An actual gray scale determination unit for determining the actual display gray scale of the second display area according to the actual difference coefficient and the to-be-displayed set gray scale of the second display area;

[0134] A second compensation subunit for compensating the second display according to the actual display gray scale.

[0135] In an optional embodiment, the second compensation subunit is specifically configured to adjust the data driving signal or the light emitting control signal of the second display area according to the actual display gray scale.

[0136] In an optional embodiment, the display panel includes sub-pixels of at least three different light emitting colors, each display compensation curve includes at least three different sub-display compensation curves, one sub-pixel of a light emitting color corresponds to one sub-display compensation curve, and sub-pixels of different light emitting colors correspond to different sub-display compensation curves;

[0137] The difference coefficient determination module 220 is specifically configured to, for each sub-pixel of a light emitting color, determine the second sub-difference coefficient between the second display area and the first display area corresponding to the sub-pixel of the light emitting color at the current usage duration of the display panel according to the first display gray scale and the second display gray scale; the compensation start duration determination module 230 is specifically configured to, for each sub-pixel of a light emitting color, determine the third sub-compensation start duration corresponding to the sub-pixel of the color according to the second sub-difference coefficient corresponding to the sub-pixel of the color and the sub-display compensation curve corresponding to the sub-pixel of the color; the compensation module 240 is specifically configured to, for each sub-pixel of a light emitting color, start from the current moment, compensate the sub-pixel of the color in the second display area according to the usage duration of the display panel, the third sub-compensation start duration corresponding to the sub-pixel of the color, and the sub-display compensation curve corresponding to the sub-pixel of the color.

[0138] The compensation device for the display panel provided by the embodiment of the present invention and the compensation method for the display panel provided by any embodiment of the present invention belong to the same inventive concept and have corresponding beneficial effects. For the technical details not elaborated in this embodiment, refer to the compensation method for the display panel provided by any embodiment of the present invention.

[0139] The embodiment of the present invention further provides a display device, Figure 6 is a schematic diagram of a display device provided by the embodiment of the present invention. Refer to Figure 6 , the display device 100 includes a display panel 200 and the compensation device 300 for the display panel of any embodiment of the present invention. The display device further includes an optical sensor, the optical sensor is correspondingly arranged on the non-light emitting side of the second display area of the display panel 200, and the optical sensor includes a camera. The display device 100 can be a display device such as a mobile phone or a tablet computer.

[0140] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the compensation method for a display panel according to any embodiment of the present invention are implemented.

[0141] Note that the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, combinations with each other, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A compensation method for a display panel, characterized in that, The display panel includes a first display area and a second display area, and the light transmittance of the second display area is different from that of the first display area; The compensation method includes: Taking the first display gray level of the first display area as the reference display gray level, and obtaining the second display gray level of the second display area after the user adjusts the second display area; Determining a difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level; Determining a compensation start duration of the second display area according to the difference coefficient and a pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area; Compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration and the display compensation curve; The compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration and the display compensation curve includes: Determining an actual difference coefficient between the second display area and the first display area corresponding to the usage duration according to the compensation start duration and the usage duration of the display panel; Determining an actual display gray level of the second display area according to the actual difference coefficient and a to-be-displayed gray level of the second display area; Adjusting a data driving signal or a light emitting control signal of the second display area according to the actual display gray level.

2. The compensation method according to claim 1, characterized in that, The determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: Difference coefficient = (Second display gray level - First display gray level) / First display gray level.

3. The compensation method according to claim 1, characterized in that, Before taking the first display gray level of the first display area as the reference display gray level and obtaining the second display gray level of the second display area after the user adjusts the second display area, it further includes: Obtaining a brightness adjustment instruction of the user, and adjusting the display brightness of the second display area according to the brightness adjustment instruction; Obtaining a chromaticity adjustment instruction of the user, and adjusting the display chromaticity of the second display area according to the chromaticity adjustment instruction; When a confirmation instruction of the user is received or the user no longer inputs a brightness adjustment instruction and a chromaticity adjustment instruction, it is determined that the display adjustment is completed.

4. The compensation method according to claim 1, characterized in that, The first display gray level includes n first sub-display gray levels, n is a positive integer greater than or equal to 2, and the differences between any two of the n first sub-display gray levels are all greater than a set threshold; The taking the first display gray level of the first display area as the reference display gray level and obtaining the second display gray level of the second display area after the user adjusts the second display area includes: Taking each of the first sub-display gray levels of the first display area as the reference display gray level respectively, and obtaining a second sub-display gray level of the second display area after the user adjusts the second display area; The determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: For each of the first sub-display gray levels, determine a first sub-difference coefficient of the second display area corresponding to the first sub-display gray level and the first display area at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level; The determining of the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: For each of the first sub-display gray levels, determine a first sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the pre-stored display compensation curve of the second display area; The compensating of the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment includes: Compensate the second display area from the current moment according to the gray level to be displayed, the usage duration of the display panel, the first sub-compensation start duration corresponding to the gray level to be displayed, and the display compensation curve.

5. The compensation method according to claim 1, wherein The first display gray level includes n first sub-display gray levels, where n is a positive integer greater than or equal to 2, and the differences between the n first sub-display gray levels are all greater than a set threshold; The obtaining of the second display gray level of the second display area after the user adjusts the second display area with the first display gray level of the first display area as the reference display gray level includes: Respectively use each first sub-display gray level of the first display area as the reference display gray level to obtain the second sub-display gray level of the second display area after the user adjusts the second display area; The determining of the difference coefficient of the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: For each of the first sub-display gray levels, determine a first sub-difference coefficient of the second display area corresponding to the first sub-display gray level and the first display area at the current usage duration of the display panel according to the first sub-display gray level and the second sub-display gray level corresponding to the first sub-display gray level; The determining of the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: The display panel includes m different display compensation curves, one display compensation curve corresponds to at least one first sub-display gray level, and m is a positive integer less than or equal to n; For each of the first sub-display gray levels, determine a second sub-compensation start duration of the second display area corresponding to the first sub-display gray level according to the first sub-difference coefficient corresponding to the first sub-display gray level and the corresponding display compensation curve; The compensating of the second display area according to the usage duration of the display panel, the compensation start duration, and the display compensation curve from the current moment includes: Determine the second sub-compensation start duration and the corresponding display compensation curve corresponding to the gray level to be displayed in the second display area; From the current moment, compensate the second display area according to the to-be-displayed gray level, the usage duration of the display panel, the second sub-compensation start duration corresponding to the to-be-displayed gray level, and the display compensation curve corresponding to the to-be-displayed gray level.

6. The compensation method according to claim 1, characterized in that The display panel includes sub-pixels of at least three different light-emitting colors. Each display compensation curve includes at least three different sub-display compensation curves. One sub-display compensation curve corresponds to sub-pixels of one light-emitting color, and different sub-display compensation curves correspond to sub-pixels of different light-emitting colors. The determining the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level includes: For sub-pixels of each light-emitting color, determine the second sub-difference coefficient between the second display area corresponding to the sub-pixels of this light-emitting color and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level. The determining the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area includes: For sub-pixels of each light-emitting color, determine the third sub-compensation start duration corresponding to the sub-pixels of this color according to the second sub-difference coefficient corresponding to the sub-pixels of this color and the sub-display compensation curve corresponding to the sub-pixels of this color. The compensating the second display area from the current moment according to the usage duration of the display panel, the compensation start duration, and the display compensation curve includes: For sub-pixels of each light-emitting color, compensate the sub-pixels of this color in the second display area from the current moment according to the usage duration of the display panel, the third sub-compensation start duration corresponding to the sub-pixels of this color, and the sub-display compensation curve corresponding to the sub-pixels of this color.

7. A compensation device for a display panel, characterized in that, The display panel includes a first display area and a second display area, and the light transmittance of the second display area is different from that of the first display area. The compensation device of the display panel includes: A gray level acquisition module, configured to use the first display gray level of the first display area as the reference display gray level, and acquire the second display gray level of the second display area after the user adjusts the second display area. A difference coefficient determination module, configured to determine the difference coefficient between the second display area and the first display area at the current usage duration of the display panel according to the first display gray level and the second display gray level. A compensation start duration determination module, configured to determine the compensation start duration of the second display area according to the difference coefficient and the pre-stored display compensation curve of the second display area; wherein, the display compensation curve is a change curve of the relationship between the usage duration of the second display area and the difference coefficient between the second display area and the first display area. A compensation module, configured to compensate the second display area from the current moment according to the usage duration of the second display area, the compensation start duration, and the display compensation curve. The compensation module is configured to determine an actual difference coefficient of the second display area and the first display area corresponding to the usage duration according to the compensation start duration and the usage duration of the display panel; determine an actual display gray level of the second display area according to the actual difference coefficient and a to-be-displayed gray level of the second display area; and adjust a data driving signal or a light emitting control signal of the second display area according to the actual display gray level.

8. A display device, characterized in that, A display panel and a compensation device for the display panel according to claim 7; It further includes an optical sensor, and the optical sensor is correspondingly disposed on a non-light emitting side of the second display area of the display panel.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, the steps of the compensation method for the display panel according to any one of claims 1-6 are implemented.

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