Display device and method for compensating for residual image edges of a display module

Abstract

The application relates to the technical field of display, and discloses a display device and method for compensating for the residual image edge of a display module, a storage medium and the display device. The device comprises: a total compensation amount determination module, which is used for determining a first total compensation amount of a first gray scale and a second total compensation amount of a second gray scale of a display module according to the current total lighting duration of the display module and a preset compensation strategy through a preset luminance attenuation model; an edge compensation amount determination module, which is used for determining a first edge compensation amount at the residual image edge according to the first total compensation amount and determining a second edge compensation amount at the residual image edge according to the second total compensation amount; and a compensation module, which is used for performing luminance compensation on the first gray scale according to the first total compensation amount and the first edge compensation amount and performing luminance compensation on the second gray scale according to the second total compensation amount and the second edge compensation amount. At the optimized residual image edge, the demarcation line between the first gray scale and the second gray scale is not easy to be perceived, and the display device has better display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display modules, in particular to a display device and method for compensating the residual image edge of a display module, a storage medium and a display device. BACKGROUND

[0002] The purpose of the background description provided herein is to generally present the context of the application. The statements described herein are not necessarily prior art.

[0003] Under the current conditions, a perfect OLED (Organic Light-Emitting Diode, OLED for short) display module will often have long-term residual images (burn-in phenomenon) after being subjected to chessboard aging for several hundred hours, which will greatly reduce the screen quality and display effect compared to the initial display effect, and will cause serious scorching.

[0004] Currently, more and more display module manufacturers compensate for the burn-in phenomenon of the image quality. However, in the actual compensation process, due to the influence of data limitations, aging block size, white aging area and monochrome aging area attenuation differences, and module itself piece difference, overcompensation or undercompensation occurs after compensation, which eventually leads to the block boundary being easily detected by the naked eye, and a relatively obvious boundary line appears.

[0005] Therefore, there is an urgent need for a display module residual image edge compensation method to solve the above-mentioned defects. SUMMARY

[0006] In view of the above problems, the present application provides a method, device, storage medium and display device for compensating the residual image edge of a display module. At the residual image edge of the optimized display module, the boundary between the first gray scale and the second gray scale is not easily detected, and better display effect is achieved.

[0007] In a first aspect, the present application provides a display device for compensating the residual image edge of a display module, comprising:

[0008] A total compensation amount determination module is configured to determine a first total compensation amount of a first gray scale and a second total compensation amount of a second gray scale of the display module according to a current total lighting duration of the display module and a preset compensation strategy through a preset luminance decay model, wherein the preset luminance decay model represents the corresponding relationship between the total lighting duration and the luminance decay, and the gray value of the first gray scale is greater than the gray value of the second gray scale.

[0009] an edge compensation quantity determination module configured to determine a first edge compensation quantity of a first gray scale at the image sticking edge of the display module according to the first overall compensation quantity, and determine a second edge compensation quantity of a second gray scale at the image sticking edge of the display module according to the second overall compensation quantity;

[0010] a compensation module configured to perform brightness compensation on the first gray scale according to the first overall compensation quantity and the first edge compensation quantity, and perform brightness compensation on the second gray scale according to the second overall compensation quantity and the second edge compensation quantity, so as to reduce the visual difference between the first gray scale and the second gray scale at the image sticking edge of the display module.

[0011] Further, the edge compensation quantity determination module comprises:

[0012] a first gray scale edge compensation quantity determination unit configured to determine the compensation quantity of one or more columns of pixels of the first gray scale at the image sticking edge of the display module according to the first overall compensation quantity and a preset gradient threshold, and take the compensation quantity of the one or more columns of pixels as the first edge compensation quantity.

[0013] Further, the edge compensation quantity determination module comprises:

[0014] a second gray scale edge compensation quantity determination unit configured to determine the compensation quantity of one or more columns of pixels of the second gray scale at the image sticking edge of the display module according to the second overall compensation quantity and a preset gradient threshold, and take the compensation quantity of the one or more columns of pixels as the second edge compensation quantity.

[0015] Further, the method further comprises:

[0016] a brightness decay model determination module configured to perform a preset length of lighting processing on the display module, and detect the brightness decay quantity at each lighting length, so as to determine the preset brightness decay model.

[0017] Further, the overall compensation quantity determination module comprises:

[0018] a brightness decay quantity determination unit and an overall compensation quantity determination unit; wherein,

[0019] the brightness decay quantity determination unit is configured to determine the total lighting length of the display module, and determine the brightness decay quantity corresponding to the total lighting length through the preset brightness decay model according to the total lighting length;

[0020] the overall compensation quantity determination unit is configured to determine a compensation coefficient corresponding to a preset compensation strategy, and determine the first overall compensation quantity of the first gray scale and the second overall compensation quantity of the second gray scale of the display module according to the brightness decay quantity and the compensation coefficient.

[0021] Further, the compensation module comprises:

[0022] a first gray scale overall brightness compensation unit and a first gray scale edge brightness compensation unit, wherein

[0023] the first gray scale overall brightness compensation unit is configured to perform overall brightness compensation on the first gray scale according to the first overall compensation amount;

[0024] the first gray scale edge brightness compensation unit is configured to perform brightness compensation on each column of pixels of the first gray scale at the edge of the residual image of the display module according to the compensation amount corresponding to each column of pixels in the first edge compensation amount, respectively.

[0025] Further, the compensation module comprises:

[0026] a second gray scale overall brightness compensation unit and a second gray scale edge brightness compensation unit, wherein

[0027] the second gray scale overall brightness compensation unit is configured to perform overall brightness compensation on the second gray scale according to the second overall compensation amount;

[0028] the second gray scale edge brightness compensation unit is configured to perform brightness compensation on each column of pixels of the second gray scale at the edge of the residual image of the display module according to the compensation amount corresponding to each column of pixels in the second edge compensation amount, respectively.

[0029] Further, the preset compensation strategy comprises:

[0030] the first gray scale and the second gray scale both perform under compensation strategy, the first gray scale and the second gray scale both perform over compensation strategy, the first gray scale performs over compensation strategy and the second gray scale performs under compensation strategy, and interpolation compensation strategy.

[0031] Further, in the case where the preset compensation strategy is that the first gray scale and the second gray scale both perform under compensation strategy,

[0032] the first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold, respectively;

[0033] the second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold, respectively;

[0034] wherein the compensation amount of each column of pixels of the first gray scale in the first direction is sequentially increased according to the preset gradient threshold on the basis of the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially decreased according to the preset gradient threshold on the basis of the second overall compensation amount.

[0035] Further, in the case that the preset compensation strategy is over compensation strategy for both the first gray scale and the second gray scale,

[0036] The first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold.

[0037] The second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold.

[0038] In the first direction, the compensation amount of each column of pixels of the first gray scale decreases in turn according to the preset gradient threshold on the basis of the first overall compensation amount, and in the opposite direction of the first direction, the compensation amount of each column of pixels of the second gray scale increases in turn according to the preset gradient threshold on the basis of the second overall compensation amount.

[0039] Further, in the case that the preset compensation strategy is over compensation strategy for the first gray scale and under compensation strategy for the second gray scale,

[0040] The first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold.

[0041] The second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold.

[0042] In the first direction, the compensation amount of each column of pixels of the first gray scale decreases in turn according to the preset gradient threshold on the basis of the first overall compensation amount, and in the opposite direction of the first direction, the compensation amount of each column of pixels of the second gray scale increases in turn according to the preset gradient threshold on the basis of the second overall compensation amount.

[0043] Further, in the case that the preset compensation strategy is interpolation compensation strategy,

[0044] The edge compensation amount determination module is further configured to take the difference between the first overall compensation amount and the second overall compensation amount as a compensation amount difference value, and take the compensation amount difference value as the first edge compensation amount and the second edge compensation amount.

[0045] Further, the first gray scale edge brightness compensation unit of the compensation module is further configured to take the first edge compensation quantity as a brightness compensation quantity of each column of pixels of a first gray scale at an edge of a residual image of the display module, and perform brightness compensation on the column of pixels of the first gray scale at the edge of the residual image of the display module.

[0046] The second gray scale edge brightness compensation unit of the compensation module is further configured to take the second edge compensation quantity as a brightness compensation quantity of each column of pixels of a second gray scale at an edge of a residual image of the display module, and perform brightness compensation on the column of pixels of the second gray scale at the edge of the residual image of the display module.

[0047] Further, in a case where the preset compensation strategy is an interpolation compensation strategy,

[0048] The difference between the first overall compensation quantity and the second overall compensation quantity is taken as a compensation quantity difference value.

[0049] The first gray scale edge compensation quantity determination unit of the edge compensation quantity determination module is further configured to determine an edge compensation quantity of each column of pixels of a first gray scale according to the compensation quantity difference value and a preset gradient coefficient of the column of pixels of the first gray scale, and take the edge compensation quantity of the column of pixels as the first edge compensation quantity.

[0050] The second gray scale edge compensation quantity determination unit of the edge compensation quantity determination module is further configured to determine an edge compensation quantity of each column of pixels of a second gray scale according to the compensation quantity difference value and a preset gradient coefficient of the column of pixels of the second gray scale, and take the edge compensation quantity of the column of pixels as the second edge compensation quantity.

[0051] The preset gradient coefficient of each column of pixels of the first gray scale and the preset gradient coefficient of each column of pixels of the second gray scale are sequentially decreased according to a preset coefficient threshold in a first direction, and a minimum gradient coefficient of the first gray scale is greater than a maximum gradient coefficient of the second gray scale.

[0052] Further, the first gray scale edge brightness compensation unit of the compensation module is further configured to take the first edge compensation quantity as a brightness compensation quantity of each column of pixels of a first gray scale at an edge of a residual image of the display module, and perform brightness compensation on the column of pixels of the first gray scale at the edge of the residual image of the display module.

[0053] The second gray scale edge brightness compensation unit of the compensation module is further configured to take the second edge compensation quantity as a brightness compensation quantity of each column of pixels of a second gray scale at an edge of a residual image of the display module, and perform brightness compensation on the column of pixels of the second gray scale at the edge of the residual image of the display module.

[0054] In a second aspect, the present application provides a method for compensating for the residual image edge of a display module, the method comprising:

[0055] determining, according to the current total lighting duration of the display module and a preset compensation strategy, a first overall compensation amount of the first gray scale and a second overall compensation amount of the second gray scale of the display module by using a preset luminance decay model, wherein the preset luminance decay model represents the corresponding relationship between the total lighting duration and the luminance decay, and the gray value of the first gray scale is greater than the gray value of the second gray scale;

[0056] determining, according to the first overall compensation amount, a first edge compensation amount of the first gray scale at the residual image edge of the display module, and determining, according to the second overall compensation amount, a second edge compensation amount of the second gray scale at the residual image edge of the display module;

[0057] performing luminance compensation on the first gray scale according to the first overall compensation amount and the first edge compensation amount, and performing luminance compensation on the second gray scale according to the second overall compensation amount and the second edge compensation amount, so as to reduce the visual difference between the first gray scale and the second gray scale at the residual image edge of the display module.

[0058] In a third aspect, the present application provides a computer readable storage medium storing a computer program, which can be executed by one or more processors to implement the steps of the method described above.

[0059] In a fourth aspect, the present application provides a display device comprising a memory and one or more processors, wherein the memory stores a computer program, and the memory and the one or more processors are communicatively connected, and the computer program is executed by the one or more processors to implement the steps of the method described above.

[0060] Compared with the prior art, the technical solution of the present application has the following advantages or beneficial effects:

[0061] After the burn-in compensation of the display module, due to the influence of data limitations, aging block size, attenuation differences of white aging area and single-color aging area, and inter-chip differences of the module itself, over-compensation or under-compensation may occur after compensation, which may eventually lead to the block boundary being easily detected by the naked eye, resulting in a relatively obvious boundary. The method for compensating for the residual image edge of the display module disclosed in the present application optimizes the luminance compensation of the residual image edge of the display module, and the boundary between the first gray scale and the second gray scale at the residual image edge of the optimized display module is not easy to be detected, and the display effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only part of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0063] In addition, it should be further explained that, for the convenience of description, only the parts related to the present disclosure are shown in the drawings. The drawings accompanying the specification form part of the present application, which are used to provide further understanding of the present application. The schematic embodiments and their descriptions in the present application are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0064] Figure 1 A flow chart of a method for compensating the residual image edge of the display module provided by the embodiments of the present application;

[0065] Figure 2 A schematic diagram of a brightness attenuation model of the display module provided by the embodiments of the present application;

[0066] Figure 3 A brightness compensation model for compensating the residual image edge of the display module provided by the embodiments of the present application;

[0067] Figure 4 A display effect schematic diagram of the display module after compensation provided by the embodiments of the present application;

[0068] Figure 5 Another brightness compensation model for compensating the residual image edge of the display module provided by the embodiments of the present application;

[0069] Figure 6 Another display effect schematic diagram of the display module after compensation provided by the embodiments of the present application;

[0070] Figure 7 Another brightness compensation model for compensating the residual image edge of the display module provided by the embodiments of the present application;

[0071] Figure 8 Another display effect schematic diagram of the display module after compensation provided by the embodiments of the present application;

[0072] Figure 9 A difference processing schematic diagram of the display module provided by the embodiments of the present application;

[0073] Figure 10 A structure schematic diagram of a display device for compensating the residual image edge of the display module provided by the embodiments of the present application;

[0074] Figure 11Another method for compensating for the residual image edge of the display module provided by the embodiment of the present application has a flowchart as shown in DETAILED DESCRIPTION

[0075] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments, so that how the present application applies technical means to solve technical problems and achieves the corresponding technical effects can be fully understood and implemented. The embodiments of the present application and various features in the embodiments can be combined with each other without conflict, and the formed technical solutions are all within the protection scope of the present application.

[0076] It should be clear that the embodiments described below are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0077] Embodiment one

[0078] The embodiment provides a method for compensating for the residual image edge of the display module, which can be applied to / used in an OLED display module.

[0079] In the embodiment, taking two adjacent first gray scale (which can be high gray scale, such as 255 gray scale) and second gray scale (which can be low gray scale, such as 192 gray scale) as an example, the brightness compensation optimization of the boundary caused by long-term residual image is carried out.

[0080] Specifically, Figure 1 A flowchart of a method for compensating for the residual image edge of the display module provided by the embodiment of the present application is shown in Figure 1 The method disclosed by the embodiment includes the following steps:

[0081] Step 110, according to the total current lighting time length of the display module and the preset compensation strategy, the first overall compensation amount of the first gray scale and the second overall compensation amount of the second gray scale are determined through the preset brightness attenuation model, wherein the preset brightness attenuation model represents the corresponding relationship between the total lighting time length and the brightness attenuation, and the gray value of the first gray scale is greater than that of the second gray scale.

[0082] In some embodiments, it further includes:

[0083] The display module is subjected to lighting processing for a preset time length, and the brightness attenuation amount at each lighting time length is detected to determine the preset brightness attenuation model.

[0084] As an example, the display module is subjected to long-time lighting experiment, and the brightness attenuation amount of different gray scales at each lighting time length is detected, and then the preset brightness attenuation model of the display module is determined.

[0085] It should be noted that the preset time length can be set according to actual needs and / or the light-emitting material of the OLED display module, such as 800 hours, 2000 hours, or 30000 hours, etc., which is not specially limited here.

[0086] In some embodiments, the first overall compensation amount of the first gray scale and the second overall compensation amount of the second gray scale of the display module are determined by the preset brightness attenuation model according to the current total lighting time of the display module and the preset compensation strategy, comprising:

[0087] determining the total lighting time of the display module, and determining the brightness attenuation amount corresponding to the total lighting time by the preset brightness attenuation model according to the total lighting time;

[0088] determining the compensation coefficient corresponding to the preset compensation strategy, and determining the first overall compensation amount of the first gray scale and the second overall compensation amount of the second gray scale of the display module according to the brightness attenuation amount and the compensation coefficient.

[0089] As an example, the brightness attenuation amount corresponding to the total lighting time is determined by the preset brightness attenuation model according to the current total lighting time of the display module, that is, the current brightness attenuation amount of the display module.

[0090] Further, the first overall compensation amount of the first gray scale and the second overall compensation amount of the second gray scale of the display module are respectively determined according to the current brightness attenuation amount and the compensation coefficient. The compensation coefficient can also be adjusted according to different gray scales.

[0091] Optionally, in the case of a brightness attenuation amount of 5%, the compensation amount is 5%*compensation coefficient. The compensation coefficient of the first gray scale can be set to 90% or 80%, etc.; the compensation coefficient of the second gray scale can also be set to 90% or 80%, etc. The compensation coefficient of the first gray scale and the compensation coefficient of the second gray scale can also be set to different values, which can be set according to actual conditions.

[0092] For example, in the case that the compensation coefficients of the first gray scale and the second gray scale are both 80%, when the brightness attenuation amount of the first gray scale is 5%, the first overall compensation amount of the first gray scale should be 4%; when the brightness attenuation amount of the second gray scale is 2%, the second overall compensation amount of the second gray scale should be 1.6%.

[0093] Step 120, determining the first edge compensation amount of the first gray scale at the edge of the residual image of the display module according to the first overall compensation amount, and determining the second edge compensation amount of the second gray scale at the edge of the residual image of the display module according to the second overall compensation amount.

[0094] In some embodiments, the first edge compensation quantity of the first gray scale at the residual image edge of the display module is determined according to the first overall compensation quantity, including:

[0095] The compensation quantity of one or more columns of pixels of the first gray scale at the residual image edge of the display module is determined according to the first overall compensation quantity and a preset gradient threshold value.

[0096] The compensation quantity of the one or more columns of pixels is taken as the first edge compensation quantity.

[0097] In some embodiments, the second edge compensation quantity of the second gray scale at the residual image edge of the display module is determined according to the second overall compensation quantity, including:

[0098] The compensation quantity of one or more columns of pixels of the second gray scale at the residual image edge of the display module is determined according to the second overall compensation quantity and a preset gradient threshold value.

[0099] The compensation quantity of the one or more columns of pixels is taken as the second edge compensation quantity.

[0100] As an example, when the brightness compensation optimization is performed at the boundary between the first gray scale and the second gray scale, the brightness compensation optimization can be performed on 1 column of pixels or multiple columns of pixels at the boundary between the first gray scale and the second gray scale.

[0101] It should be noted that the preset gradient threshold value can be set to the same value for different gray scales, such as 0.1%; the preset gradient threshold value can also be set to different values according to different gray scales, which can be set according to actual needs.

[0102] As another example, when the brightness compensation optimization is performed on one column of pixels at the boundary between the first gray scale and the second gray scale, the compensation quantity of the one column of pixels at the boundary between the first gray scale or the second gray scale is uniformly referred to as an edge compensation quantity; when the brightness compensation optimization is performed on multiple columns of pixels at the boundary between the first gray scale and the second gray scale, the compensation quantity of the multiple columns of pixels at the boundary between the first gray scale or the second gray scale is uniformly referred to as an edge compensation quantity.

[0103] In some possible cases, when the brightness compensation optimization is performed on multiple columns of pixels at the boundary between the first gray scale and the second gray scale, the number of columns of the first gray scale and the number of columns of the second gray scale can also be different.

[0104] In some embodiments, the preset compensation strategy includes:

[0105] The first gray scale and the second gray scale both perform an under compensation strategy, the first gray scale and the second gray scale both perform an over compensation strategy, the first gray scale performs an over compensation strategy and the second gray scale performs an under compensation strategy, and an interpolation compensation strategy.

[0106] In step 130, the first gray scale is brightness compensated according to the first overall compensation amount and the first edge compensation amount, and the second gray scale is brightness compensated according to the second overall compensation amount and the second edge compensation amount, so as to reduce the visual difference between the first gray scale and the second gray scale at the residual image edge of the display module.

[0107] In some embodiments, the brightness compensation of the first gray scale according to the first overall compensation amount and the first edge compensation amount comprises:

[0108] overall brightness compensation of the first gray scale according to the first overall compensation amount;

[0109] respectively according to the compensation amount corresponding to each column of pixels in the first edge compensation amount, brightness compensation is performed on each column of pixels of the first gray scale at the residual image edge of the display module.

[0110] In some embodiments, the brightness compensation of the second gray scale according to the second overall compensation amount and the second edge compensation amount comprises:

[0111] overall brightness compensation of the second gray scale according to the second overall compensation amount;

[0112] respectively according to the compensation amount corresponding to each column of pixels in the second edge compensation amount, brightness compensation is performed on each column of pixels of the second gray scale at the residual image edge of the display module.

[0113] As an example, in the process of brightness compensation, first, overall brightness compensation is performed on the entire region of the first gray scale or the second gray scale according to the overall compensation amount, that is, brightness compensation is performed on all columns of pixels in the first gray scale or the second gray scale; then, the edge compensation amount is determined, and then brightness compensation is performed on each column of pixels of the first gray scale or the second gray scale at the residual image edge of the display module. In some embodiments, in the case where the preset compensation strategy is an under-compensation strategy for both the first gray scale and the second gray scale, the first edge compensation amount of the first gray scale at the residual image edge of the display module is determined according to the first overall compensation amount, and the second edge compensation amount of the second gray scale at the residual image edge of the display module is determined according to the second overall compensation amount, comprising:

[0114] respectively according to the first overall compensation amount and the preset gradient threshold, the compensation amount of each column of pixels of the first gray scale is determined, and respectively according to the second overall compensation amount and the preset gradient threshold, the compensation amount of each column of pixels of the second gray scale is determined;

[0115] The compensation amount of each column of pixels of the first gray scale in the first direction is sequentially increased by the preset gradient threshold based on the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially decreased by the preset gradient threshold based on the second overall compensation amount.

[0116] Optionally, the first direction is from the first gray scale (high gray scale) to the second gray scale (low gray scale).

[0117] As an example, in the case that the preset compensation strategy is an under-compensation strategy for both the first gray scale and the second gray scale, it is assumed that the brightness attenuation amount of the first gray scale is 5%, the first overall compensation amount of the first gray scale is 4%, the brightness attenuation amount of the second gray scale is 2%, the second overall compensation amount of the second gray scale is 1.6%, and the preset gradient threshold of the first gray scale and the second gray scale is 0.1%. The number of columns of the first gray scale and the second gray scale at the residual image edge of the display module is set to 3.

[0118] Further, in the first direction, the compensation amount of the 3 columns of pixels of the first gray scale at the residual image edge of the display module can be sequentially set to 4.1%, 4.2%, and 4.1%, and the compensation amount of the 3 columns of pixels of the second gray scale at the residual image edge of the display module can be sequentially set to 1.3%, 1.4%, and 1.5%.

[0119] In some embodiments, in the case that the preset compensation strategy is an over-compensation strategy for both the first gray scale and the second gray scale, the first edge compensation amount of the first gray scale at the residual image edge of the display module is determined according to the first overall compensation amount, and the second edge compensation amount of the second gray scale at the residual image edge of the display module is determined according to the second overall compensation amount, including:

[0120] The compensation amount of each column of pixels of the first gray scale is determined according to the first overall compensation amount and the preset gradient threshold, and the compensation amount of each column of pixels of the second gray scale is determined according to the second overall compensation amount and the preset gradient threshold.

[0121] The compensation amount of each column of pixels of the first gray scale in the first direction is sequentially decreased by the preset gradient threshold based on the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially increased by the preset gradient threshold based on the second overall compensation amount.

[0122] As an example, in a case where the preset compensation strategy is over compensation for both the first gray scale and the second gray scale, assuming that the luminance decay of the first gray scale is 5%, the first overall compensation of the first gray scale is 6%; the luminance decay of the second gray scale is 2%, the second overall compensation of the second gray scale is 2.4%; the preset gradient threshold of the first gray scale and the second gray scale is 0.1% respectively; the column number of the first gray scale and the second gray scale at the residual image edge of the display module is set to 3 columns.

[0123] Further, in the first direction: the compensation of the 3 columns of pixels of the first gray scale at the residual image edge of the display module can be set to 5.9%, 5.8% and 5.7% in turn; the compensation of the 3 columns of pixels of the second gray scale at the residual image edge of the display module can be set to 2.7%, 2.6% and 2.5% in turn.

[0124] In some embodiments, in a case where the preset compensation strategy is over compensation for the first gray scale and under compensation for the second gray scale, the first edge compensation of the first gray scale at the residual image edge of the display module is determined according to the first overall compensation, and the second edge compensation of the second gray scale at the residual image edge of the display module is determined according to the second overall compensation, comprising:

[0125] determining the compensation of each column of pixels of the first gray scale according to the first overall compensation and the preset gradient threshold, and determining the compensation of each column of pixels of the second gray scale according to the second overall compensation and the preset gradient threshold;

[0126] wherein the compensation of each column of pixels of the first gray scale in the first direction decreases in turn according to the preset gradient threshold on the basis of the first overall compensation, and the compensation of each column of pixels of the second gray scale in the opposite direction of the first direction increases in turn according to the preset gradient threshold on the basis of the second overall compensation.

[0127] As an example, in a case where the preset compensation strategy is over compensation for the first gray scale and under compensation for the second gray scale, assuming that the luminance decay of the first gray scale is 5%, the first overall compensation of the first gray scale is 6%; the luminance decay of the second gray scale is 2%, the second overall compensation of the second gray scale is 1.6%; the preset gradient threshold of the first gray scale and the second gray scale is 0.1% respectively; the column number of the first gray scale and the second gray scale at the residual image edge of the display module is set to 3 columns.

[0128] Further, in the first direction: the compensation of the 3 columns of pixels of the first gray scale at the residual image edge of the display module can be set to 5.9%, 5.8% and 5.7% in turn; the compensation of the 3 columns of pixels of the second gray scale at the residual image edge of the display module can be set to 1.9%, 1.8% and 1.7% in turn.

[0129] In some embodiments, in a case where the preset compensation strategy is the interpolation compensation strategy, the determining the first edge compensation amount of the first gray scale at the residual image edge of the display module according to the first overall compensation amount and the determining the second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second overall compensation amount comprises:

[0130] determining a compensation amount difference as a difference between the first overall compensation amount and the second overall compensation amount, and taking the compensation amount difference as the first edge compensation amount and the second edge compensation amount.

[0131] In some embodiments, the brightness compensation of the first gray scale according to the first overall compensation amount and the first edge compensation amount and the brightness compensation of the second gray scale according to the second overall compensation amount and the second edge compensation amount comprise:

[0132] respectively taking the first edge compensation amount as a brightness compensation amount of each column of pixels of the first gray scale at the residual image edge of the display module, and performing brightness compensation on the each column of pixels of the first gray scale at the residual image edge of the display module;

[0133] respectively taking the second edge compensation amount as a brightness compensation amount of each column of pixels of the second gray scale at the residual image edge of the display module, and performing brightness compensation on the each column of pixels of the second gray scale at the residual image edge of the display module.

[0134] As an example, in a case where the preset compensation strategy is the interpolation compensation strategy, it is assumed that the first overall compensation amount of the first gray scale is 6%, the second overall compensation amount of the second gray scale is 0, the number of columns of the first gray scale at the residual image edge of the display module is set to 2 columns, the number of columns of the second gray scale at the residual image edge of the display module is set to 2 columns, and a total of 4 columns are set.

[0135] Further, in the first direction: the compensation amount of the 4 columns of pixels at the residual image edge of the display module can be all set to 3%.

[0136] In some embodiments, in a case where the preset compensation strategy is the interpolation compensation strategy, the determining the first edge compensation amount of the first gray scale at the residual image edge of the display module according to the first overall compensation amount and the determining the second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second overall compensation amount comprise:

[0137] determining a compensation amount difference as a difference between the first overall compensation amount and the second overall compensation amount;

[0138] respectively determining an edge compensation amount of each column of pixels of the first gray scale according to the compensation amount difference and a preset gradient coefficient of the each column of pixels of the first gray scale, and taking the edge compensation amount of the each column of pixels as the first edge compensation amount;

[0139] determining the edge compensation amount of each column of pixels of the second gray scale according to the compensation amount difference and the preset gradient coefficient of each column of pixels of the second gray scale, and taking the edge compensation amount of each column of pixels as the second edge compensation amount;

[0140] wherein, in the first direction, the preset gradient coefficient of each column of pixels of the first gray scale and the preset gradient coefficient of each column of pixels of the second gray scale are sequentially decreased according to a preset coefficient threshold, and the minimum gradient coefficient of the first gray scale is greater than the maximum gradient coefficient of the second gray scale. In some embodiments, the brightness compensation of the first gray scale according to the first overall compensation amount and the first edge compensation amount, and the brightness compensation of the second gray scale according to the second overall compensation amount and the second edge compensation amount, comprise:

[0141] taking the edge compensation amount of each column of pixels in the first edge compensation amount as the brightness compensation amount of each column of pixels of the first gray scale at the residual image edge of the display module, and performing brightness compensation on each column of pixels of the first gray scale at the residual image edge of the display module;

[0142] taking the edge compensation amount of each column of pixels in the second edge compensation amount as the brightness compensation amount of each column of pixels of the second gray scale at the residual image edge of the display module, and performing brightness compensation on each column of pixels of the second gray scale at the residual image edge of the display module.

[0143] As another example, in the case that the preset compensation strategy is an interpolation compensation strategy, it is assumed that the first overall compensation amount of the first gray scale is 6%; the second overall compensation amount of the second gray scale is 0; the number of columns of the first gray scale at the residual image edge of the display module is set to 2 columns, and the number of columns of the second gray scale is set to 2 columns, a total of 4 columns.

[0144] Further, in the first direction: the compensation amount of the 2 columns of pixels of the first gray scale at the residual image edge of the display module can be sequentially set to 5% and 4%; the compensation amount of the 2 columns of pixels of the second gray scale at the residual image edge of the display module can be sequentially set to 2% and 1%. It can be understood that the preset gradient coefficient can also be set according to actual needs.

[0145] The method for compensating the residual image edge of the display module disclosed in the embodiment optimizes the brightness compensation of the residual image edge of the display module, and the boundary line between the first gray scale and the second gray scale at the residual image edge of the optimized display module is less likely to be perceived, and has better display effect.

[0146] Embodiment Two

[0147] The embodiment further explains and describes the method for compensating the residual image edge of the display module disclosed in Embodiment One in an exemplary manner.

[0148] In this embodiment, 255 gray scale (first gray scale) and 192 gray scale (second gray scale) are taken as examples to disclose the following four processing schemes in an exemplary manner.

[0149] After the preset luminance decay model of the display module is determined (reference Figure 2 ), the decay amount of the 255 gray scale and the 192 gray scale of the display module corresponding to the current time length can be obtained according to the preset luminance decay model of the display module. Figure 2 It can be known that the decay amount at the lighting time length of 500 hours is respectively: the first gray scale decays by 5%, and the second gray scale decays by 2%.

[0150] Processing scheme 1: assuming that in the life compensation process, the aging of the 255 gray scale and the 192 gray scale are both executed under the under-compensation scheme, that is, the compensation amount is less than the decay amount. As shown in Figure 3 , the first gray scale luminance decays by 5%, and the life compensation is 4%; the second gray scale luminance decays by 2%, and the life compensation is 1.6%. Then, the first gray scale aging is about 0.6% lower than the second gray scale aging in luminance, so there is an obvious boundary at the boundary line of the high second gray scale, which can be easily observed by the naked eye.

[0151] Specifically, the optimization edge compensation method includes: as shown in Figure 4 , the first gray scale compensation amount is 4%, and the second gray scale compensation amount is 1.6%. Optimization is performed at the boundary of the first gray scale and the second gray scale, the compensation amount of the edge pixels of the first gray scale aging is increased, and the edge can be 1 column of pixels or multiple columns of pixels. The increase in the compensation amount is set according to the actual situation. The compensation amount of multiple columns of pixels can change in steps, such as increasing the luminance by 4%, 4.1%, 4.2%, 4.3%, etc. Then, the compensation amount of the edge pixels of the second gray scale aging is reduced, and the edge can be 1 column of pixels or multiple columns of pixels. The decrease in the compensation amount is set according to the actual situation. The compensation amount of multiple columns of pixels can change in steps, such as increasing the luminance by 1.6%, 1.5%, 1.4%, 1.3%, etc. The compensation result can be referred to Figure 4 : it can be seen that the boundary line is more difficult to observe after the edge compensation optimization is performed, and has better display effect.

[0152] Processing scheme 2: assuming that in the life compensation process, the aging of the 255 gray scale and the 192 gray scale are both executed under the over-compensation scheme, that is, the compensation amount is greater than the decay amount. As shown in Figure 5 , the first gray scale luminance decays by 5%, and the life compensation is 6%; the second gray scale luminance decays by 2%, and the life compensation is 2.4%. Then, the first gray scale aging is about 0.6% higher than the second gray scale aging in luminance, so there is an obvious boundary at the boundary line of the high second gray scale, which can be easily observed by the naked eye.

[0153] Specifically, the optimization edge compensation method includes: as shown in Figure 6As shown, the first gray scale compensation amount is 6%, and the second gray scale compensation amount is 2.4%. Optimization is performed at the boundary between the first gray scale and the second gray scale, the compensation amount of the pixels at the edge of the aging area of the first gray scale is reduced, and the edge can be one column of pixels or multiple columns of pixels. The reduced compensation amount is set according to actual conditions. The compensation amount of multiple columns of pixels can change in steps, for example, the compensation amount changes from 6% brightness to 5.9% brightness, 5.8% brightness, 5.7% brightness, and so on. Then, the compensation amount of the pixels at the edge of the aging area of the second gray scale is increased, and the edge can be one column of pixels or multiple columns of pixels. The increased compensation amount is set according to actual conditions. The compensation amount of multiple columns of pixels can change in steps, for example, the compensation amount increases from 2.4% brightness to 2.5% brightness, 6.4% brightness, 2.7% brightness, and so on.

[0154] Processing scheme 3: If, in the life compensation process, the aging area of the 255 gray scale is overcompensated, and the aging area of the 192 gray scale is undercompensated, that is, the compensation amount of the first gray scale is greater than the decay amount, and the compensation amount of the second gray scale is less than the decay amount. As shown in Figure 7 As shown, the brightness decay of the first gray scale is 5%, the life compensation is 6%, the brightness decay of the second gray scale is 2%, and the life compensation is 1.6%. The aging area of the first gray scale is about 1.4% higher in brightness than the aging area of the second gray scale, so there is a clear boundary beyond the boundary of the second gray scale, which can be easily observed by the naked eye.

[0155] Specifically, the optimization edge compensation method includes: as shown in Figure 8 As shown, the first gray scale compensation amount is 6%, and the second gray scale compensation amount is 1.6%. Optimization is performed at the boundary between the first gray scale and the second gray scale, the compensation amount of the pixels at the edge of the aging area of the first gray scale is reduced, and the edge can be one column of pixels or multiple columns of pixels. The reduced compensation amount is set according to actual conditions. The compensation amount of multiple columns of pixels can change in steps, for example, the compensation amount changes from 6% brightness to 5.9% brightness, 5.8% brightness, 5.7% brightness, and so on. Then, the compensation amount of the pixels at the edge of the aging area of the second gray scale is increased, and the edge can be one column of pixels or multiple columns of pixels. The increased compensation amount is set according to actual conditions. The compensation amount of multiple columns of pixels can change in steps, for example, the compensation amount increases from 1.6% brightness to 1.7% brightness, 1.8% brightness, and 1.9% brightness, and so on.

[0156] Processing scheme 4: Without considering overcompensation and undercompensation, interpolation compensation processing is uniformly performed. Specifically, taking white blocks and black blocks as examples, reference can be made to Figure 9 The optimization edge compensation method includes the following two processing modes:

[0157] The first processing mode: the boundary compensation value = the compensation amount * the coefficient. As shown in the figure, the white block compensates 6, the black block compensates 0, interpolation compensation is performed on the two rows of the white and black blocks, and the compensation amount = (the white block compensation amount - the black block compensation amount) * 0.5.

[0158] The second processing mode: the four columns of pixels of the boundary are compensated according to the gradient coefficient 1, the gradient coefficient 2, the gradient coefficient 3 and the gradient coefficient 4 respectively, the two rows on both sides of the boundary of the white block and the black block are gradient processed respectively, the compensation amount = (the white block compensation amount - the black block compensation amount) * the gradient coefficient, the gradient coefficient is the gradient change, which can be 80%, 60%, 40%, 20% and the like, and can also be set according to actual requirements.

[0159] Embodiment three

[0160] The embodiment provides an OLED residual image edge compensation device. The embodiment can be used to execute the method embodiment, and details not disclosed in the embodiment can be referred to the method embodiment. Figure 10 A structure diagram of a display device for compensating a residual image edge of a display module is provided in the embodiment, as shown in the figure, the device 1000 disclosed in the embodiment comprises: Figure 10

[0161] The overall compensation amount determination module 1001 is configured to determine a first overall compensation amount of a first gray scale and a second overall compensation amount of a second gray scale of the display module according to a total current lighting duration of the display module and a preset compensation strategy through a preset brightness attenuation model, wherein the preset brightness attenuation model represents a corresponding relationship between the total lighting duration and the brightness attenuation, and a gray value of the first gray scale is greater than a gray value of the second gray scale.

[0162] The edge compensation amount determination module 1002 is configured to determine a first edge compensation amount of the first gray scale at the residual image edge of the display module according to the first overall compensation amount, and determine a second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second overall compensation amount.

[0163] The compensation module 1003 is configured to perform brightness compensation on the first gray scale according to the first overall compensation amount and the first edge compensation amount, and perform brightness compensation on the second gray scale according to the second overall compensation amount and the second edge compensation amount, so as to reduce a visual difference between the first gray scale and the second gray scale at the residual image edge of the display module.

[0164] In some embodiments, the edge compensation amount determination module 1002 comprises:

[0165] ​The first gray scale edge compensation quantity determination unit is configured to determine the compensation quantity of one or more columns of pixels of a first gray scale at the residual image edge of the display module according to the first overall compensation quantity and a preset gradient threshold, and take the compensation quantity of the one or more columns of pixels as the first edge compensation quantity.

[0166] In some embodiments, the edge compensation quantity determination module 1002 includes:

[0167] The second gray scale edge compensation quantity determination unit is configured to determine the compensation quantity of one or more columns of pixels of a second gray scale at the residual image edge of the display module according to the second overall compensation quantity and a preset gradient threshold, and take the compensation quantity of the one or more columns of pixels as the second edge compensation quantity.

[0168] In some embodiments, the method further includes:

[0169] The luminance decay model determination module is configured to perform a preset length of lighting processing on the display module, and detect a luminance decay quantity at each lighting length to determine the preset luminance decay model.

[0170] In some embodiments, the overall compensation quantity determination module 1001 includes:

[0171] The luminance decay quantity determination unit and the overall compensation quantity determination unit; wherein

[0172] The luminance decay quantity determination unit is configured to determine a total lighting length of the display module, and determine a luminance decay quantity corresponding to the total lighting length by the preset luminance decay model according to the total lighting length.

[0173] The overall compensation quantity determination unit is configured to determine a compensation coefficient corresponding to a preset compensation strategy, and determine a first overall compensation quantity of a first gray scale and a second overall compensation quantity of a second gray scale of the display module according to the luminance decay quantity and the compensation coefficient.

[0174] In some embodiments, the compensation module 1003 includes:

[0175] The first gray scale overall luminance compensation unit and the first gray scale edge luminance compensation unit; wherein

[0176] The first gray scale overall luminance compensation unit is configured to perform overall luminance compensation on the first gray scale according to the first overall compensation quantity.

[0177] The first gray scale edge luminance compensation unit is configured to perform luminance compensation on each column of pixels of the first gray scale at the residual image edge of the display module according to the compensation quantity corresponding to each column of pixels in the first edge compensation quantity, respectively.

[0178] In some embodiments, the compensation module 1003 comprises:

[0179] a second gray scale overall brightness compensation unit, and a second gray scale edge brightness compensation unit; wherein

[0180] the second gray scale overall brightness compensation unit is configured to perform overall brightness compensation on the second gray scale according to the second overall compensation amount;

[0181] the second gray scale edge brightness compensation unit is configured to perform brightness compensation on each column of pixels of the second gray scale at the edge of the residual image of the display module according to the compensation amount corresponding to each column of pixels in the second edge compensation amount.

[0182] In some embodiments, the preset compensation strategy comprises:

[0183] the first gray scale and the second gray scale both perform under-compensation strategy, the first gray scale and the second gray scale both perform over-compensation strategy, the first gray scale performs over-compensation strategy and the second gray scale performs under-compensation strategy, and interpolation compensation strategy.

[0184] In some embodiments, in the case that the preset compensation strategy is that the first gray scale and the second gray scale both perform under-compensation strategy,

[0185] the first gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold;

[0186] the second gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold;

[0187] wherein the compensation amount of each column of pixels of the first gray scale in the first direction is sequentially increased according to the preset gradient threshold on the basis of the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially decreased according to the preset gradient threshold on the basis of the second overall compensation amount.

[0188] In some embodiments, in the case that the preset compensation strategy is that the first gray scale and the second gray scale both perform over-compensation strategy,

[0189] the first gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold;

[0190] The second gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold.

[0191] In the first direction, the compensation amount of each column of pixels of the first gray scale decreases in turn according to the preset gradient threshold on the basis of the first overall compensation amount, and in the opposite direction of the first direction, the compensation amount of each column of pixels of the second gray scale increases in turn according to the preset gradient threshold on the basis of the second overall compensation amount.

[0192] In some embodiments, in the case where the preset compensation strategy is to perform over-compensation for the first gray scale and under-compensation for the second gray scale,

[0193] The first gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold.

[0194] The second gray scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold.

[0195] In the first direction, the compensation amount of each column of pixels of the first gray scale decreases in turn according to the preset gradient threshold on the basis of the first overall compensation amount, and in the opposite direction of the first direction, the compensation amount of each column of pixels of the second gray scale increases in turn according to the preset gradient threshold on the basis of the second overall compensation amount.

[0196] In some embodiments, in the case where the preset compensation strategy is an interpolation compensation strategy,

[0197] The edge compensation amount determination module 1002 is further configured to take the difference between the first overall compensation amount and the second overall compensation amount as a compensation amount difference, and take the compensation amount difference as the first edge compensation amount and the second edge compensation amount.

[0198] In some embodiments, the first gray scale edge brightness compensation unit of the compensation module 1003 is further configured to respectively take the first edge compensation amount as the brightness compensation amount of each column of pixels of the first gray scale at the residual image edge of the display module, and perform brightness compensation on each column of pixels of the first gray scale at the residual image edge of the display module.

[0199] The second gray scale edge brightness compensation unit of the compensation module 1003 is further configured to respectively take the second edge compensation amount as the brightness compensation amount of each column of pixels of the second gray scale at the residual image edge of the display module, and perform brightness compensation on each column of pixels of the second gray scale at the residual image edge of the display module.

[0200] In some embodiments, the difference between the first overall compensation amount and the second overall compensation amount is taken as a compensation amount difference;

[0201] The first gray-scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is further configured to determine edge compensation amounts of each column of pixels of the first gray scale according to the compensation amount difference and preset gradient coefficients of the each column of pixels of the first gray scale respectively, and take the edge compensation amounts of the each column of pixels as the first edge compensation amounts.

[0202] The second gray-scale edge compensation amount determination unit of the edge compensation amount determination module 1002 is further configured to determine edge compensation amounts of each column of pixels of the second gray scale according to the compensation amount difference and preset gradient coefficients of the each column of pixels of the second gray scale respectively, and take the edge compensation amounts of the each column of pixels as the second edge compensation amounts.

[0203] In some embodiments, the preset gradient coefficients of the each column of pixels of the first gray scale and the preset gradient coefficients of the each column of pixels of the second gray scale are sequentially decreased according to a preset coefficient threshold in the first direction, and the minimum gradient coefficient of the first gray scale is greater than the maximum gradient coefficient of the second gray scale.

[0204] In some embodiments, the first gray-scale edge brightness compensation unit of the compensation module 1003 is further configured to take the edge compensation amounts of the each column of pixels in the first edge compensation amounts as brightness compensation amounts of the each column of pixels of the first gray scale at the residual image edge of the display module, and perform brightness compensation on the each column of pixels of the first gray scale at the residual image edge of the display module.

[0205] The second gray-scale edge brightness compensation unit of the compensation module 1003 is further configured to take the edge compensation amounts of the each column of pixels in the second edge compensation amounts as brightness compensation amounts of the each column of pixels of the second gray scale at the residual image edge of the display module, and perform brightness compensation on the each column of pixels of the second gray scale at the residual image edge of the display module.

[0206] Those skilled in the art can understand that the structure shown in the above embodiments is not a limitation on the device of the present application, and can include more or fewer modules / cells than the structure shown, or combine certain modules / cells, or different arrangement of modules / cells. Figure 10 The above embodiments of the present application are described in detail, but the structure shown in the above embodiments is not a limitation on the device of the present application, and can include more or fewer modules / cells than the structure shown, or combine certain modules / cells, or different arrangement of modules / cells.

[0207] Those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, which can be centralized on a single computing device or distributed on a network composed of multiple computing devices. Alternatively, they can be realized by program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, and in some cases, the steps shown or described can be executed in different order, or they can be made into individual integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module.

[0208] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of each module in the OLED residual image edge compensation device can refer to the corresponding process in the foregoing method embodiments, and the present embodiment will not be repeated here.

[0209] The device provided in the embodiment includes: a total compensation amount determination module 1001 configured to determine a first total compensation amount of a first gray scale and a second total compensation amount of a second gray scale of a display module according to a current total lighting duration of the display module and a preset compensation strategy through a preset luminance decay model, wherein the preset luminance decay model represents a corresponding relationship between the total lighting duration and the luminance decay, and the gray scale value of the first gray scale is greater than that of the second gray scale; an edge compensation amount determination module 1002 configured to determine a first edge compensation amount of the first gray scale at a residual image edge of the display module according to the first total compensation amount, and determine a second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second total compensation amount; and a compensation module 1003 configured to perform luminance compensation on the first gray scale according to the first total compensation amount and the first edge compensation amount, and perform luminance compensation on the second gray scale according to the second total compensation amount and the second edge compensation amount, so as to reduce the visual difference between the first gray scale and the second gray scale at the residual image edge of the display module. At the residual image edge of the optimized display module, the boundary between the first gray scale and the second gray scale is less likely to be perceived, and the display effect is better.

[0210] Embodiment Four

[0211] The embodiment provides a computer readable storage medium. The computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the method steps in the foregoing method embodiments. The embodiment will not be repeated here.

[0212] The computer-readable storage medium can also individually include a computer program, a data file, a data structure, etc., or a combination thereof. The computer-readable storage medium or the computer program can be specifically designed and understood by those skilled in the computer software field, or can be known and available to those skilled in the computer software field. Examples of the computer-readable storage medium include: magnetic media, such as a hard disk, a floppy disk, and a magnetic tape; optical media, such as a CD ROM disk and a DVD; a magneto-optical medium, such as an optical disk; and a hardware device specifically configured to store and execute a computer program, such as a read-only memory (ROM), a random access memory (RAM), a flash memory, or a server, an app application store, and the like. Examples of the computer program include machine code (e.g., code generated by a compiler) and a file containing high-level code that can be executed by a computer by using an interpreter. The described hardware device can be configured to function as one or more software modules to perform the above-described operations and methods, and vice versa. In addition, the computer-readable storage medium can be distributed in a networked computer system, and the program code or computer program can be stored and executed in a distributed manner.

[0213] Embodiment Five

[0214] The embodiment provides a computer program product. The computer program product includes a computer program or instructions that, when executed by a processor, implement all or part of the steps of the methods in the foregoing method embodiments, which are not repeated here.

[0215] Further, the computer program product can include one or more computer-executable components that, when executed by a processor, are configured to perform one or more embodiments; the computer program product can also include a computer program tangibly embodied on a non-transitory computer readable medium, the computer program including instructions configured to perform any of the methods of the present disclosure. In such embodiments, the computer program can be downloaded from a network and installed, and / or installed from a removable medium.

[0216] Embodiment Six

[0217] The embodiment provides a display device. The display device can include one or more processors, a memory, a multimedia component, an input / output (I / O) interface, and a communication component.

[0218] The one or more processors are configured to perform all or part of the steps in the foregoing method embodiments. The memory is configured to store various types of data, which can include, for example, instructions of any application program or method in the display device, and application-related data.

[0219] The one or more processors can be implemented with an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor or other electronic devices implementing the above methods.

[0220] The memory can be implemented with any type of volatile or non-volatile storage devices or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage devices, flash memory, magnetic disks, or optical disks.

[0221] The multimedia component can include a screen, which can be a touch screen, and an audio component for outputting and / or inputting audio signals. For example, the audio component can include a microphone for receiving external audio signals. The received audio signals can be further stored in the memory or transmitted through the communication component. The audio component also includes at least one speaker for outputting audio signals.

[0222] The I / O interface provides an interface between the one or more processors and other interface modules, which can be a keyboard, a mouse, a button, etc. These buttons can be virtual buttons or physical buttons.

[0223] The communication component is configured to perform wired or wireless communication between the display device and other devices. The wired communication includes communication through a network port, a serial port, etc. The wireless communication includes Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, or a combination of one or more of them.

[0224] In some possible cases, when the adjacent first gray scale and the second gray scale satisfy the preset condition, the edge compensation amount of the first gray scale or the second gray scale at the residual image edge of the display module is no longer determined, and the residual image edge of the display module is no longer compensated.

[0225] The preset condition includes that the data count values of the adjacent first gray scale and the second gray scale are less than a preset threshold.

[0226] As an example, the display device further includes a DIC (Digital Integrated Circuit) chip, and the OLED can be subjected to brightness compensation according to the flow as shown in Figure 11 The person skilled in the art can understand from Figure 11 that the data count data can be stored in a memory, and the relevant data can be read out from the memory by the DIC chip; then the data count values at different positions are identified from the obtained relevant data; when the data count values of two adjacent gray scales are greater than a preset threshold, it is determined that the block edge (i.e., the residual image edge) is identified; then the residual image edge is subjected to brightness compensation by the method for compensating the residual image edge of the display module disclosed in Embodiment 1; finally, the DIC chip is fed back to the display module for display. The preset threshold can be set according to actual requirements, or can be set according to the bit width of the DIC chip and / or the data count data, which is not specially limited here.

[0227] In summary, the present application provides a display device method for compensating the residual image edge of a display module, a computer readable storage medium, and a display device. The method for compensating the residual image edge of the display module disclosed in the present application optimizes the brightness compensation of the residual image edge of the display module. At the residual image edge of the optimized display module, the demarcation line between the first gray scale and the second gray scale is less likely to be perceived, and better display effect is achieved.

[0228] It should also be understood that, wherever appropriate, the methods and apparatuses described herein can also be implemented in software and / or firmware. Furthermore, wherever appropriate, the methods and apparatuses described herein can also be implemented in one or more computer programs that are executable on one or more programmable computers or processors including, but not limited to, PCs, laptops, cell phones, and PDAs running software (e.g., web browsers) that can be used to operate a web server. In this regard, each step in the procedures can be implemented in software and / or firmware and / or hardware and / or other ways. Also, the software implemented instructions can be stored in one or more computer readable memory devices, such as a hard disk, floppy disk, CD ROM, RAM, EEPROM, and the like, and can be made available using one or more computer program products, one or more computer readable tangible storage devices, one or more computer program products, and / or one or more computer readable tangible storage devices.

[0229] In this application, the terms "comprise", "contain", or any other variant thereof are intended to cover a non-exclusive inclusion, so that processes, methods, articles, or devices that comprise a list of elements do not only include those elements, but also include other elements that are not expressly listed, or further include elements inherent in such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, device or equipment comprising the element; if there is a description of "first", "second", etc., it is only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features; in the description of the present application, unless otherwise specified, the meaning of the term "a plurality of" or "a plurality" is at least two; if there is a description of a server, it should be noted that the server can be a stand-alone physical server or terminal, or a server cluster composed of multiple physical servers, or a cloud server capable of providing cloud server, cloud database, cloud storage and CDN and other basic cloud computing services; if there is a description of a smart terminal or a mobile device in the present application, it should be noted that the smart terminal or mobile device can be a mobile phone, a tablet computer, a smart watch, a netbook, a wearable electronic device, a personal digital assistant (PDA), an augmented reality technology device (AR), a virtual reality device (VR), a smart television, a smart sound, a personal computer (PC), etc., but is not limited thereto, and the specific form of the smart terminal or mobile device is not specially limited in the present application.

[0230] Finally, it should be noted that in the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "one example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0231] Although the embodiments of the present application have been shown and described above, it is understood that all the above-described embodiments are exemplary only, the contents described are merely adopted for the purpose of facilitating the understanding of the present application, and are not intended to limit the present application. Any person skilled in the art to which the present application belongs can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the protection scope of the present application shall be subject to the scope defined by the appended claims.

Claims

1. A display device for compensating for a residual image edge of a display module, characterized in that The method comprises the following steps: The overall compensation amount determination module is configured to determine a first overall compensation amount of a first gray scale and a second overall compensation amount of a second gray scale of the display module according to a current total lighting duration of the display module and a preset compensation strategy, and through a preset luminance decay model, wherein the preset luminance decay model represents a corresponding relationship between the total lighting duration and the luminance decay, and a gray value of the first gray scale is greater than a gray value of the second gray scale; The edge compensation amount determination module is configured to determine a first edge compensation amount of the first gray scale at the residual image edge of the display module according to the first overall compensation amount, and determine a second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second overall compensation amount; The compensation module is configured to perform luminance compensation on the first gray scale according to the first overall compensation amount and the first edge compensation amount, and perform luminance compensation on the second gray scale according to the second overall compensation amount and the second edge compensation amount, so as to reduce a visual difference between the first gray scale and the second gray scale at the residual image edge of the display module; The edge compensation amount determination module comprises a first gray scale edge compensation amount determination unit and a second gray scale edge compensation amount determination unit; the first gray scale edge compensation amount determination unit is configured to determine a compensation amount of one or more columns of pixels of the first gray scale at the residual image edge of the display module according to the first overall compensation amount and a preset gradient threshold, and take the compensation amount of the one or more columns of pixels as the first edge compensation amount; and the second gray scale edge compensation amount determination unit is configured to determine a compensation amount of one or more columns of pixels of the second gray scale at the residual image edge of the display module according to the second overall compensation amount and a preset gradient threshold, and take the compensation amount of the one or more columns of pixels as the second edge compensation amount.

2. The display device of claim 1, wherein the compensation display module is configured to compensate for the residual image edge of the display module. Further comprising: The luminance decay model determination module is configured to perform a preset duration of lighting processing on the display module, and detect a luminance decay amount at each lighting duration, so as to determine the preset luminance decay model.

3. The display device of claim 1, wherein the compensation display module is configured to compensate for the residual image edge of the display module. The overall compensation amount determination module comprises: The luminance decay amount determination unit and the overall compensation amount determination unit; wherein The luminance decay amount determination unit is configured to determine a total lighting duration of the display module, and determine a luminance decay amount corresponding to the total lighting duration through the preset luminance decay model according to the total lighting duration; The overall compensation amount determination unit is configured to determine a compensation coefficient corresponding to the preset compensation strategy, and determine a first overall compensation amount of a first gray scale and a second overall compensation amount of a second gray scale of the display module according to the luminance decay amount and the compensation coefficient.

4. The display device of claim 1, wherein the compensation display module is configured to compensate for the residual image edge of the display module. The compensation module comprises: The first gray scale overall luminance compensation unit and the first gray scale edge luminance compensation unit; wherein The first gray scale overall luminance compensation unit is configured to perform overall luminance compensation on the first gray scale according to the first overall compensation amount; The first gray scale edge luminance compensation unit is configured to perform luminance compensation on each column of pixels of the first gray scale at the residual image edge of the display module according to a compensation amount corresponding to each column of pixels in the first edge compensation amount, respectively.

5. The display device of claim 1, wherein the compensation display module is configured to compensate for the residual image edge of the display module. The compensation module comprises: a second gray scale overall brightness compensation unit and a second gray scale edge brightness compensation unit; wherein the second gray scale overall brightness compensation unit is configured to perform overall brightness compensation on the second gray scale according to the second overall compensation amount; the second gray scale edge brightness compensation unit is configured to perform brightness compensation on each column of pixels of the second gray scale at the edge of the residual image of the display module according to the compensation amount corresponding to each column of pixels in the second edge compensation amount.

6. The display device of claim 1, wherein the compensation display module is configured to compensate for the residual image edge of the display module. The preset compensation strategy includes: the first gray scale and the second gray scale both perform under compensation strategy, the first gray scale and the second gray scale both perform over compensation strategy, the first gray scale performs over compensation strategy and the second gray scale performs under compensation strategy, and interpolation compensation strategy.

7. The display device of claim 6, wherein the compensation display module is configured to compensate for the residual image edge of the display module. In the case that the preset compensation strategy is that the first gray scale and the second gray scale both perform under compensation strategy, the first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold; the second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold; wherein the compensation amount of each column of pixels of the first gray scale in the first direction is sequentially increased according to the preset gradient threshold on the basis of the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially decreased according to the preset gradient threshold on the basis of the second overall compensation amount; wherein the first direction is from the first gray scale to the second gray scale.

8. The display device of claim 6, wherein the compensation display module is configured to compensate for the residual image edge of the display module. In the case that the preset compensation strategy is that the first gray scale and the second gray scale both perform over compensation strategy, the first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold; the second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold; wherein the compensation amount of each column of pixels of the first gray scale in the first direction is sequentially decreased according to the preset gradient threshold on the basis of the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially increased according to the preset gradient threshold on the basis of the second overall compensation amount; wherein the first direction is from the first gray scale to the second gray scale.

9. The display device of claim 6, wherein the compensation display module is configured to compensate for the residual image edge of the display module. In the case that the preset compensation strategy is that the first gray scale performs over compensation strategy and the second gray scale performs under compensation strategy, the first gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the first gray scale according to the first overall compensation amount and the preset gradient threshold; the second gray scale edge compensation amount determination unit of the edge compensation amount determination module is configured to determine the compensation amount of each column of pixels of the second gray scale according to the second overall compensation amount and the preset gradient threshold; The compensation amount of each column of pixels of the first gray scale in the first direction is sequentially decreased according to a preset gradient threshold on the basis of the first overall compensation amount, and the compensation amount of each column of pixels of the second gray scale in the opposite direction of the first direction is sequentially increased according to a preset gradient threshold on the basis of the second overall compensation amount.

10. The display device of claim 6, wherein the compensation for the residual image edge of the display module is determined by a function of the display module's residual image edge and the display module's residual image edge compensation. In a case where the preset compensation strategy is an interpolation compensation strategy, The edge compensation amount determination module is further configured to take a difference between the first overall compensation amount and the second overall compensation amount as a compensation amount difference value, and take the compensation amount difference value as the first edge compensation amount and the second edge compensation amount.

11. The display device of claim 10, wherein the compensation module is further configured to: The first gray scale edge brightness compensation unit of the compensation module is further configured to take the edge compensation amount of each column of pixels in the first edge compensation amount as a brightness compensation amount of each column of pixels of the first gray scale at the residual image edge of the display module, and perform brightness compensation on the each column of pixels of the first gray scale at the residual image edge of the display module. The second gray scale edge brightness compensation unit of the compensation module is further configured to take the edge compensation amount of each column of pixels in the second edge compensation amount as a brightness compensation amount of each column of pixels of the second gray scale at the residual image edge of the display module, and perform brightness compensation on the each column of pixels of the second gray scale at the residual image edge of the display module.

12. The display device of claim 6, wherein the compensation display module is configured to compensate for the residual image edge of the display module. In a case where the preset compensation strategy is an interpolation compensation strategy, The difference between the first overall compensation amount and the second overall compensation amount is taken as a compensation amount difference value. The first gray scale edge compensation amount determination unit of the edge compensation amount determination module is further configured to determine an edge compensation amount of each column of pixels of the first gray scale according to the compensation amount difference value and a preset gradient coefficient of the each column of pixels of the first gray scale, respectively, and take the edge compensation amount of the each column of pixels as the first edge compensation amount. The second gray scale edge compensation amount determination unit of the edge compensation amount determination module is further configured to determine an edge compensation amount of each column of pixels of the second gray scale according to the compensation amount difference value and a preset gradient coefficient of the each column of pixels of the second gray scale, respectively, and take the edge compensation amount of the each column of pixels as the second edge compensation amount. The preset gradient coefficient of each column of pixels of the first gray scale and the preset gradient coefficient of each column of pixels of the second gray scale are sequentially decreased according to a preset coefficient threshold in the first direction, and the minimum gradient coefficient of the first gray scale is greater than the maximum gradient coefficient of the second gray scale.

13. The display device of claim 12, wherein the compensation module is further configured to: The first gray scale edge brightness compensation unit of the compensation module is further configured to take the edge compensation amount of each column of pixels in the first edge compensation amount as a brightness compensation amount of each column of pixels of the first gray scale at the residual image edge of the display module, and perform brightness compensation on the each column of pixels of the first gray scale at the residual image edge of the display module. The second gray scale edge brightness compensation unit of the compensation module is further configured to take the edge compensation amount of each column of pixels in the second edge compensation amount as the brightness compensation amount of each column of pixels at the second gray scale of the residual image edge of the display module, and perform brightness compensation on each column of pixels at the second gray scale of the residual image edge of the display module.

14. A method of compensating for a residual image edge of a display module, the method comprising: The method comprises: determining, according to the current total lighting duration of the display module and a preset compensation strategy, a first overall compensation amount of the first gray scale and a second overall compensation amount of the second gray scale of the display module by using a preset brightness attenuation model, wherein the preset brightness attenuation model represents the corresponding relationship between the total lighting duration and the brightness attenuation, and the gray value of the first gray scale is greater than the gray value of the second gray scale; determining a first edge compensation amount of the first gray scale at the residual image edge of the display module according to the first overall compensation amount, and determining a second edge compensation amount of the second gray scale at the residual image edge of the display module according to the second overall compensation amount; performing brightness compensation on the first gray scale according to the first overall compensation amount and the first edge compensation amount, and performing brightness compensation on the second gray scale according to the second overall compensation amount and the second edge compensation amount, so as to reduce the visual difference between the first gray scale and the second gray scale at the residual image edge of the display module; wherein the step of determining the first edge compensation amount comprises: determining the compensation amount of one or more columns of pixels of the first gray scale at the residual image edge of the display module according to the first overall compensation amount and a preset gradient threshold, and taking the compensation amount of the one or more columns of pixels as the first edge compensation amount; the step of determining the second edge compensation amount comprises: determining the compensation amount of one or more columns of pixels of the second gray scale at the residual image edge of the display module according to the second overall compensation amount and a preset gradient threshold, and taking the compensation amount of the one or more columns of pixels as the second edge compensation amount.

15. A computer-readable storage medium, characterized in that, The computer program stored in the computer readable storage medium, when executed by one or more processors, implements the method for compensating the residual image edge of the display module as claimed in claim 14.

16. A display device comprising: The computer program stored in the computer readable storage medium, when executed by one or more processors, implements the method for compensating the residual image edge of the display module as claimed in claim 14. The computer program stored in the computer readable storage medium, when executed by one or more processors, implements the method for compensating the residual image edge of the display module as claimed in claim 14.

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