Brightness compensation method, device, system and display device for display panel

Abstract

The embodiments of the present application provide a brightness compensation method, device, system and display device for a display panel. The brightness compensation method for the display panel includes: determining a first temperature of a design position of a display area of ​​the display panel; the display area includes at least two display sub-areas; determining a brightness compensation value of each display sub-area based on a corresponding relationship between a designed brightness compensation value of each display sub-area and the first temperature; and performing brightness compensation on each display sub-area based on the brightness compensation value of each display sub-area. The embodiments of the present application can perform brightness compensation on each display sub-area based on the temperature of the design position of the display area of ​​the display panel, thereby improving the brightness stability and uniformity of the display panel, and further improving the display effect.

Description

Technical Field

[0001] The present application relates to the technical field of display panels. Specifically, the present application relates to a brightness compensation method, device, system and display equipment for a display panel. Background Art

[0002] In recent years, technological innovation has been advancing with each passing day, and commercial displays have been increasingly moving towards the high-end market. For example, products with high brightness and high contrast are very popular among end customers.

[0003] At present, in order to obtain a better display effect, the display panel often needs to match a high-brightness backlight, which inevitably leads to the problem of temperature rise. The temperature rise of the display panel will directly affect the characteristics of the backlight film material, resulting in a decrease in the stability and uniformity of the brightness of the display panel. Summary of the invention

[0004] In view of the shortcomings of the existing methods, the present application proposes a brightness compensation method, device, system and display equipment for a display panel to solve the technical problem of reduced brightness stability and uniformity caused by increased temperature of the display panel in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a brightness compensation method for a display panel, comprising:

[0006] Determining a first temperature at a design position of a display area of ​​the display panel; the display area includes at least two display sub-areas;

[0007] Determining a brightness compensation value for each display sub-region based on a correspondence between the designed brightness compensation value for each display sub-region and the first temperature;

[0008] Based on the brightness compensation value of each display sub-region, brightness compensation is performed on each display sub-region.

[0009] In a possible implementation, determining a first temperature of a design position of a display area of ​​a display panel includes:

[0010] Acquire temperature information from a temperature sensor; the temperature sensor is disposed on the light incident side of a display backplane of the display panel;

[0011] The first temperature is determined based on the correspondence between the designed temperature information and the first temperature.

[0012] In a possible implementation, determining the first temperature based on the correspondence between the designed temperature information and the first temperature includes:

[0013] Determine the location information of the temperature sensor and the location information of the design location;

[0014] Based on the position information of the temperature sensor and the position information of the designed position, a correspondence between one temperature information and the first temperature is determined from at least two pre-stored correspondences between the temperature information and the first temperature as the designed correspondence between the temperature information and the first temperature.

[0015] In a possible implementation, it also includes:

[0016] Determine the positional relationship between each peripheral display sub-region and the central display sub-region; the display sub-region includes a central display sub-region located in the center and peripheral display sub-regions located around the central display sub-region, and the design position of the display region is the center of the display region;

[0017] Based on the positional relationship between each peripheral display sub-region and the central display sub-region, determine a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region;

[0018] Determining the brightness compensation value of each display sub-region based on the corresponding relationship between the designed brightness compensation value of each display sub-region and the first temperature includes:

[0019] The brightness compensation value of each peripheral display sub-region is determined based on the corresponding relationship between the designed brightness compensation value of each peripheral display sub-region and the first temperature, and the first temperature.

[0020] In a possible implementation, it also includes:

[0021] Acquire a corresponding relationship between a designed brightness compensation value of the central display sub-region and the first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature is a linear relationship;

[0022] And, determining the brightness compensation value of each display sub-region based on the corresponding relationship between the designed brightness compensation value of each display sub-region and the first temperature, including:

[0023] The brightness compensation value of the central display sub-region is determined based on the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature, and the first temperature.

[0024] In a possible implementation, based on the positional relationship between each peripheral display sub-region and the central display sub-region, determining a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region includes:

[0025] Based on the positional relationship between each peripheral display sub-region and the central display sub-region, a regional brightness compensation group where each peripheral display sub-region is located is determined; each regional brightness compensation group corresponds to a corresponding relationship between a brightness compensation value and a first temperature, and the corresponding relationship between the brightness compensation value of each regional brightness compensation group and the first temperature is a linear relationship;

[0026] The correspondence between the brightness compensation value corresponding to the regional brightness compensation group where each peripheral display sub-region is located and the first temperature is used as the correspondence between the designed brightness compensation value and the first temperature of the peripheral display sub-region.

[0027] In a possible implementation, performing brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region includes:

[0028] The brightness compensation value of each display sub-area is sent to the driving chip of the display panel, so that the driving chip performs brightness compensation on each display sub-area based on each brightness compensation value; the brightness compensation value is a compensation current.

[0029] In a second aspect, an embodiment of the present application provides a brightness compensation device for a display panel, comprising:

[0030] A first determining module is used to determine a first temperature of a design position of a display area of ​​the display panel; the display area includes at least two display sub-areas;

[0031] A second determination module, configured to determine a brightness compensation value of each display sub-region based on a correspondence between the designed brightness compensation value of each display sub-region and the first temperature;

[0032] The compensation module is used to perform brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region.

[0033] In a third aspect, an embodiment of the present application provides a brightness compensation system for a display panel, comprising:

[0034] Memory;

[0035] A processor, electrically connected to the memory;

[0036] The memory stores a computer program, and the computer program is executed by the processor to implement the brightness compensation method of the display panel of the first aspect.

[0037] In a fourth aspect, an embodiment of the present application provides a display device, comprising: a display panel, a temperature sensor, and a brightness compensation system for a display panel according to the third aspect;

[0038] The temperature sensor is arranged on the light incident side of the display back plate of the display panel;

[0039] The temperature sensor is communicatively connected to the brightness compensation system of the display panel.

[0040] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which implements the brightness compensation method of the first aspect when the computer program is executed by a processor.

[0041] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include:

[0042] The brightness compensation method of the display panel of the embodiment of the present application first determines the first temperature of the design position of the display area of ​​the display panel, and then determines the brightness compensation value of each display sub-area according to the corresponding relationship between the designed brightness compensation value of each display sub-area and the first temperature, so that the brightness compensation of each display sub-area can be performed on each display sub-area based on the brightness compensation value of each display sub-area. The embodiment of the present application can perform brightness compensation on each display sub-area based on the temperature of the design position of the display area of ​​the display panel, thereby improving the brightness stability and uniformity of the display panel, and further improving the display effect.

[0043] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0045] Figure 1 A flowchart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0046] Figure 2 A flowchart of another brightness compensation method for a display panel provided in an embodiment of the present application;

[0047] Figure 3 A schematic diagram of a structure in which a display area is divided into a plurality of display sub-areas provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of the structure of a brightness compensation device for a display panel provided in an embodiment of the present application;

[0049] Figure 5 A schematic structural diagram of a brightness compensation system for a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0051] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the present technical field. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, the element may be directly connected or coupled to the other element, or may refer to the connection relationship between the element and the other element established through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" may be implemented as "A", or as "B", or as "A and B".

[0052] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0053] According to research, among the increasingly popular display devices, the most representative product is the stacked screen display device (BD CELL), which has appeared more and more frequently in various high-end exhibitions in recent years. Stacked screen display devices refer to the solution that uses two OCs stacked on top of each other. The main display screen Main Cell is on the upper layer, which focuses on color control to form a visual color impact; the secondary display screen Sub Cell is on the lower layer, without color film, and is a black and white screen, mainly used for fine-tuning backlight partitions and brightness, presenting high contrast and dark details.

[0054] Existing stacked display devices require a higher backlight current to increase brightness in order to achieve high contrast. The brightness generally reaches 1100nit (nits), and high brightness will cause heating problems. Heat will in turn affect the stability of the backlight brightness. From startup to stable state, the brightness difference reaches 17.6%. Due to different temperatures in different areas, the brightness uniformity is also relatively poor, with the lowest being only 79.4%. Brightness stability and uniformity are two indispensable parameters for evaluating the image quality of stacked display devices.

[0055] At present, most display devices often need to match high-brightness backlights to obtain better display effects, which inevitably brings about temperature rise problems. The temperature rise of the module will directly affect the characteristics of the backlight film material, thereby affecting the stability and uniformity of the backlight brightness. In order to ensure the display effect, a brightness adjustment method that can improve the stability and uniformity of the backlight brightness is urgently needed.

[0056] The brightness compensation method, device, system and display equipment of the display panel provided in the present application are intended to solve the above technical problems in the prior art.

[0057] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above technical problems with specific embodiments. It should be noted that the following implementations can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different implementations will not be described repeatedly.

[0058] Further research found that 60 minutes after the stacked display device was turned on, the module temperature tended to stabilize. The relationship between the brightness of the L255 screen and the temperature of the center of the screen is shown in Table 1 below: Through data analysis, it can be seen that when the temperature is below 30 degrees, the brightness will remain stable. When the temperature is greater than 30 degrees, the brightness will decay as the temperature rises, so the relationship between brightness and temperature is as follows:

[0059] When t≦30℃, L=1095, when 30℃﹤t≦61℃, L=0.1317t 2 -18.972t+1573.1.

[0060] Among them, L is the brightness of the white screen (nit), t is the first temperature of the center of the display area (℃), the first temperature of the center of the display area is the temperature of the center of the display screen surface, which can be collected when studying the relationship between the temperature and brightness of the center of the display area.

[0061] The temperature and brightness of the center of the surface of the display screen of the display panel are further analyzed to obtain the following data, as shown in Table 1.

[0062] Table 1: Relationship between brightness and temperature

[0063] time Temperature at the center of the screen surface (t) Brightness (L) x y 0 25.14 1094 0.322 0.331 5 32.59 1095 0.325 0.331 10 37.66 1050 0.324 0.331 15 40.51 1015 0.325 0.331 20 45.39 985 0.325 0.331 25 48.75 959 0.324 0.330 30 50.22 950 0.324 0.330 35 54.52 934 0.323 0.330 40 56.21 926 0.322 0.329 45 57.53 920 0.322 0.329 50 58.61 914 0.322 0.329 55 59.55 910 0.322 0.329 60 61.02 902 0.322 0.329

[0064] From the data in Table 1 above, we can know that as the temperature increases, the brightness of the display panel decreases continuously. Wherein, x and y represent color coordinates.

[0065] Further research found that the brightness uniformity of the nine areas of the stacked display device from power on to stability is also relatively poor. The screen is divided into nine equal parts, that is, three display sub-areas in each row and three display sub-areas in each column. The brightness of each display sub-area from power on to stability is shown in Table 2. From the data, the attenuation degree of each display sub-area from power on to stability is similar, and the uniformity is also similar. Among them, uniformity = (minimum brightness / maximum brightness)*100%.

[0066] Table 2: Relationship between each display sub-area and brightness

[0067]

[0068] Based on the data in Table 2, it can be found that the current stacked display devices have at least the following two problems:

[0069] 1. From power on to stability, the brightness decays seriously and the brightness stability is too poor;

[0070] 2. From power-on to stabilization, the brightness of different areas of the screen varies greatly and the brightness uniformity is too poor.

[0071] Based on the above research and analysis, it is found that the brightness of the display panel is related to the temperature of the display area, that is, the brightness data is related to the temperature. By determining the temperature of the display area and adjusting the brightness of the display area based on the temperature, the stability and uniformity of the backlight brightness can be improved.

[0072] Based on the above analysis, the present invention provides a brightness compensation method for a display panel. Figure 1 As shown, the brightness compensation method of the display panel includes: step S101 to step S103.

[0073] S101, determining a first temperature at a design position of a display area of ​​a display panel; the display area includes at least two display sub-areas.

[0074] Optionally, the designed position of the display area may be a pre-designed position, which may be the center of the display screen surface.

[0075] In some embodiments, in step S101, determining a first temperature of a design position of a display area of ​​a display panel includes:

[0076] The temperature information of the temperature sensor is obtained; the temperature sensor is arranged on the light incident side of the display back plate of the display panel.

[0077] The first temperature is determined based on the correspondence between the designed temperature information and the first temperature.

[0078] Optionally, the temperature sensor may be disposed at the upper left corner of the display back panel or at other suitable locations.

[0079] Optionally, the corresponding relationship between the designed temperature information and the first temperature is a pre-stored corresponding relationship, which may be a linear relationship. The first temperature may be calculated based on the temperature value corresponding to the temperature information.

[0080] In some embodiments, determining the first temperature based on the correspondence between the designed temperature information and the first temperature includes:

[0081] Determine the location information of the temperature sensor and the location information of the design location.

[0082] Based on the position information of the temperature sensor and the position information of the designed position, a correspondence between one temperature information and the first temperature is determined from at least two pre-stored correspondences between the temperature information and the first temperature as the designed correspondence between the temperature information and the first temperature.

[0083] Optionally, the location information of the temperature sensor and the location information of the design location may be pre-stored, and may be the actual location of the temperature sensor input by the user and the design location selected. Alternatively, a coordinate system may be established on the display panel, and the coordinates of the temperature sensor and the design location may be determined according to the coordinate system.

[0084] Optionally, the correspondence between multiple temperature information and the first temperature can be based on different temperature sensor positions and different design positions, based on multiple temperature information and multiple first temperatures obtained through testing, and data processing is performed to obtain the correspondence between the temperature information and the first temperature.

[0085] Optionally, based on the position information of the temperature sensor and the position information of the designed position, determining a corresponding relationship between one piece of temperature information and the first temperature from at least two pre-stored corresponding relationships between the temperature information and the first temperature includes:

[0086] Determine a distance range between the temperature sensor and the design position based on the position information of the temperature sensor and the design position;

[0087] Based on the distance range, a correspondence between the temperature information and the first temperature is determined.

[0088] Optionally, each distance range corresponds to a corresponding relationship between a piece of temperature information and the first temperature.

[0089] S102 : Determine a brightness compensation value for each display sub-region based on a correspondence between the designed brightness compensation value for each display sub-region and the first temperature.

[0090] In some embodiments, the brightness compensation method of the display panel further includes:

[0091] Determine the positional relationship between each peripheral display sub-region and the central display sub-region; the display sub-region includes a central display sub-region located in the center and peripheral display sub-regions located around the central display sub-region, and the design position of the display region is the center of the display region.

[0092] Based on the positional relationship between each peripheral display sub-area and the central display sub-area, a correspondence between a brightness compensation value and the first temperature is determined from at least two pre-stored correspondences between brightness compensation values ​​and the first temperature as the designed correspondence between the brightness compensation value and the first temperature of the peripheral display sub-area.

[0093] In step S102, based on the corresponding relationship between the designed brightness compensation value of each display sub-region and the first temperature, the brightness compensation value of each display sub-region is determined, including:

[0094] The brightness compensation value of each peripheral display sub-region is determined based on the corresponding relationship between the designed brightness compensation value of each peripheral display sub-region and the first temperature, and the first temperature.

[0095] Optionally, determining the positional relationship between each peripheral display sub-area and the central display sub-area includes:

[0096] Acquire position information of each peripheral display sub-area and position information of the central display sub-area;

[0097] Based on the position information of each peripheral display sub-region and the position information of the central display sub-region, the position relationship between each peripheral display sub-region and the central display sub-region is determined.

[0098] In some embodiments, the brightness compensation method of the display panel further includes:

[0099] Acquire a corresponding relationship between a designed brightness compensation value of the central display sub-region and the first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature is a linear relationship;

[0100] In step S102, based on the corresponding relationship between the designed brightness compensation value of each display sub-region and the first temperature, the brightness compensation value of each display sub-region is determined, including:

[0101] The brightness compensation value of the central display sub-region is determined based on the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature, and the first temperature.

[0102] Optionally, the correspondence between the designed brightness compensation value of the central display sub-area and the first temperature is a pre-stored correspondence, which is based on multiple brightness compensation values ​​of the central display sub-area obtained by testing and multiple first temperatures, and the correspondence between the brightness compensation value and the first temperature is obtained by data processing.

[0103] In some embodiments, based on the positional relationship between each peripheral display sub-region and the central display sub-region, determining a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region includes:

[0104] Based on the positional relationship between each peripheral display sub-region and the central display sub-region, the regional brightness compensation group where each peripheral display sub-region is located is determined; each regional brightness compensation group corresponds to a corresponding relationship between a brightness compensation value and a first temperature, and the corresponding relationship between the brightness compensation value of each regional brightness compensation group and the first temperature is a linear relationship.

[0105] The correspondence between the brightness compensation value corresponding to the regional brightness compensation group where each peripheral display sub-region is located and the first temperature is used as the correspondence between the designed brightness compensation value and the first temperature of the peripheral display sub-region.

[0106] Optionally, the brightness compensation group corresponds to at least two peripheral display sub-regions having the same positional relationship with the central display sub-region, or the distance between the centers of at least two peripheral display sub-regions and the center of the central display sub-region is within a design range, and at least two peripheral display sub-regions are divided into one brightness compensation group, corresponding to the same corresponding relationship between the brightness compensation value and the first temperature.

[0107] Optionally, the brightness compensation value is the sum of the product of the first constant and the first temperature and the second constant.

[0108] S103 . Perform brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region.

[0109] In some embodiments, based on the brightness compensation value of each display sub-region, brightness compensation is performed on each display sub-region, including:

[0110] The brightness compensation value of each display sub-area is sent to the driving chip of the display panel, so that the driving chip performs brightness compensation on each display sub-area based on each brightness compensation value; the brightness compensation value is a compensation current.

[0111] Optionally, the driver chip includes at least one driver IC (Integrated Circuit), the brightness compensation value is a compensation current, ie, a backlight current or a partition current, and the driver chip can perform brightness compensation on each display sub-area based on each brightness compensation value.

[0112] Based on step S101 to step S103, the brightness compensation method of the display panel of the embodiment of the present application first determines the first temperature of the design position of the display area of ​​the display panel, and then determines the brightness compensation value of each display sub-area based on the corresponding relationship between the designed brightness compensation value of each display sub-area and the first temperature, so that the brightness compensation of each display sub-area can be performed on each display sub-area based on the brightness compensation value of each display sub-area. The embodiment of the present application can perform brightness compensation on each display sub-area based on the temperature of the display area of ​​the display panel, reduce brightness changes, thereby improving the brightness stability and uniformity of the display panel, and further improving the display effect.

[0113] The embodiment of the present application can automatically adjust the backlight compensation current based on the surface temperature of the display backplane of the display to adjust the brightness of different areas of the backlight in different time periods, so that the display module of the entire display panel can ensure the stability and uniformity of the brightness regardless of any working state and any working environment, thereby improving customer experience and satisfaction.

[0114] The brightness compensation method of the display panel in the embodiment of the present application can be applied to a stacked display device or other display devices with a display backplane.

[0115] As an example, the present application embodiment provides a brightness compensation method for a display panel, see Figure 2 As shown, the brightness compensation method of the display panel includes: step S201 to step S208.

[0116] S201, acquiring temperature information of a temperature sensor; the temperature sensor is disposed on a light incident side of a display backplane of a display panel.

[0117] Based on the above analysis, considering that the brightness data is related to the temperature, a temperature sensor can be designed through which the temperature data is transmitted to the brightness compensation system of the display panel. The brightness compensation system of the display panel dynamically adjusts the current of the backlight partition according to the identified temperature.

[0118] Optionally, after the temperature sensor detects the temperature, the temperature information can be returned to the brightness compensation system of the display panel through the I2C communication protocol, so that the brightness compensation system of the display panel can execute the brightness compensation method of the display panel of the embodiment of the present application based on the temperature information.

[0119] S202, determining the first temperature based on the correspondence between the designed temperature information and the first temperature, and then executing steps S205 and S207.

[0120] Optionally, in S202, determining the first temperature based on the correspondence between the designed temperature information and the first temperature includes:

[0121] Determine the location information of the temperature sensor and the location information of the design location.

[0122] Based on the position information of the temperature sensor and the position information of the designed position, a correspondence between one temperature information and the first temperature is determined from at least two pre-stored correspondences between the temperature information and the first temperature as the designed correspondence between the temperature information and the first temperature.

[0123] Optionally, the corresponding relationship between the designed temperature information and the first temperature is a pre-stored corresponding relationship, which may be a linear relationship. The first temperature may be calculated based on the temperature value corresponding to the temperature information.

[0124] Optionally, the location information of the temperature sensor and the location information of the design location may be pre-stored, and may be the actual location of the temperature sensor input by the user and the design location selected. Alternatively, a coordinate system may be established on the display panel, and the coordinates of the temperature sensor and the design location may be determined according to the coordinate system.

[0125] Optionally, the correspondence between multiple temperature information and the first temperature can be based on different temperature sensor positions and different design positions, based on multiple temperature information and multiple first temperatures obtained through testing, and data processing is performed to obtain the correspondence between the temperature information and the first temperature.

[0126] Optionally, based on the position information of the temperature sensor and the position information of the designed position, determining a corresponding relationship between one piece of temperature information and the first temperature from at least two pre-stored corresponding relationships between the temperature information and the first temperature includes:

[0127] Determine a distance range between the temperature sensor and the design position based on the position information of the temperature sensor and the design position;

[0128] Based on the distance range, a correspondence between the temperature information and the first temperature is determined.

[0129] Optionally, each distance range corresponds to a corresponding relationship between a piece of temperature information and the first temperature.

[0130] The main technical idea of ​​the embodiment of the present application is to identify the temperature to change the backlight current, thereby improving the stability and uniformity of the backlight brightness. First, an area that can characterize the surface temperature of the display screen must be found for temperature collection. Through research, it is found that the first temperature in the center of the display area (the center of the surface of the display screen) can relatively accurately characterize the surface temperature of the display screen.

[0131] However, the placement of the temperature sensor is limited by the structure of the display panel, and the temperature sensor needs to be placed at a reasonable position to determine the first temperature of the center of the display area based on the temperature of the temperature sensor.

[0132] As an example, a temperature sensor is set at a certain designed position in the upper left corner of the display back plate. The temperature information of multiple temperature sensors and the first temperature of the center of the display area are obtained to obtain the data shown in Table 3 below.

[0133] Table 3: Relationship between the temperature Tsensor corresponding to the temperature information of the temperature sensor and the first temperature Toc

[0134]

[0135] From the analysis of the above data, we can see that the following corresponding relationship is satisfied between the two:

[0136] Tsensor=0.022Toc 2 -0.354Toc+23.53

[0137] Optionally, after the position of the temperature sensor is determined, the correspondence between the temperature information and the first temperature may be pre-stored as the designed correspondence between the temperature information and the first temperature.

[0138] Similarly, when the position of the temperature sensor changes, the correspondence between the temperature information and the first temperature can be predetermined based on the temperature data, or the correspondence between multiple temperature information corresponding to the position and design position of the temperature sensor obtained in the test and the first temperature can be pre-stored to facilitate adjustment or adaptation to the positions and / or design positions of multiple temperature sensors.

[0139] S203, determine the positional relationship between each peripheral display sub-region and the central display sub-region; the display sub-region includes a central display sub-region located in the center and peripheral display sub-regions located around the central display sub-region, and the design position of the display region is the center of the display region.

[0140] S204. Based on the positional relationship between each peripheral display sub-region and the central display sub-region, determine a correspondence between the brightness compensation value and the first temperature from at least two pre-stored correspondences between the brightness compensation values ​​and the first temperature as the correspondence between the designed brightness compensation value and the first temperature of the peripheral display sub-region.

[0141] Optionally, in step S204, based on the positional relationship between each peripheral display sub-region and the central display sub-region, determining a corresponding relationship between the brightness compensation value and the first temperature from at least two pre-stored corresponding relationships between the brightness compensation value and the first temperature as the corresponding relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region includes:

[0142] Based on the positional relationship between each peripheral display sub-region and the central display sub-region, the regional brightness compensation group where each peripheral display sub-region is located is determined; each regional brightness compensation group corresponds to a corresponding relationship between a brightness compensation value and a first temperature, and the corresponding relationship between the brightness compensation value of each regional brightness compensation group and the first temperature is a linear relationship.

[0143] The correspondence between the brightness compensation value corresponding to the regional brightness compensation group where each peripheral display sub-region is located and the first temperature is used as the correspondence between the designed brightness compensation value and the first temperature of the peripheral display sub-region.

[0144] Optionally, the brightness compensation group corresponds to at least two peripheral display sub-regions having the same positional relationship with the central display sub-region, or the distance between the centers of at least two peripheral display sub-regions and the center of the central display sub-region is within a design range, and at least two peripheral display sub-regions are divided into one brightness compensation group, corresponding to the same corresponding relationship between the brightness compensation value and the first temperature.

[0145] S205 , determining a brightness compensation value of each peripheral display sub-region based on the corresponding relationship between the designed brightness compensation value of each peripheral display sub-region and the first temperature, and the first temperature, and then executing S208 .

[0146] S206, obtaining a corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature is a linear relationship, and then executing step S207.

[0147] Optionally, the correspondence between the designed brightness compensation value of the central display sub-area and the first temperature is a pre-stored correspondence, which is based on multiple brightness compensation values ​​of the central display sub-area obtained by testing and multiple first temperatures, and the correspondence between the brightness compensation value and the first temperature is obtained by data processing.

[0148] S207 , determining the brightness compensation value of the central display sub-region based on the correspondence between the designed brightness compensation value of the central display sub-region and the first temperature, and the first temperature, and then executing step S208 .

[0149] S208 , sending the brightness compensation value of each display sub-area to the driving chip of the display panel, so that the driving chip performs brightness compensation on each display sub-area based on the brightness compensation value; the brightness compensation value is a compensation current.

[0150] Through research, it is found that the first temperature Toc at the center of the display area can be known based on the temperature Tsensor of the temperature sensor, but the relationship between the compensation current and the brightness is also required. The data of the compensation current and the brightness are shown in Table 4. From the data, it can be inferred that for every 1mA (milliampere) increase in the compensation current, the corresponding brightness will increase by about 100nit.

[0151] Table 4: Relationship between compensation current and brightness of the center of the display area

[0152] Compensation current / mA Corresponding to the brightness of the center of the display area / nit 10 1001 11 1095 12 1199 13 1298 14 1401 15 1398

[0153] Alternatively, see Figure 3 As shown, as an example, the display area is divided into nine display sub-areas, among which area 5 is the central display sub-area, and areas 1, 2, 3, 4, 6, 7, 8 and 9 are all peripheral display sub-areas.

[0154] It has been found through testing that the display sub-areas located on the four sides of the central display sub-area have the same positional relationship with the central display sub-area, or the distance between the center of the central display sub-area and the center of the four side display sub-areas is within the first design distance range, as a group of peripheral display sub-areas. The display sub-areas located on the diagonal of the central display sub-area have the same positional relationship with the central display sub-area, or the distance between the center of the central display sub-area and the center of the four side display sub-areas is within the second design distance range, as a group of peripheral display sub-areas. That is, the 1 / 3 / 7 / 9 area forms a brightness compensation group, and the 2 / 4 / 6 / 8 area forms a brightness compensation group. The 1 / 3 / 7 / 9 area can correspond to a corresponding relationship between a brightness compensation value and a first temperature, and the 2 / 4 / 6 / 8 area can correspond to a corresponding relationship between a brightness compensation value and a first temperature. Among them, the brightness compensation value is the compensation current.

[0155] Based on the relationship between the compensation current and the brightness of the center of the display area in Table 4, as well as the data from the brightness startup to stability and the brightness data of each display sub-area obtained from the above tests, the following compensation scheme is proposed as shown in Table 5.

[0156] Table 5: Relationship between the first temperature and the compensation current

[0157]

[0158]

[0159] Based on the data in Table 5 above, the corresponding relationship between the compensation current and the first temperature is as follows:

[0160] Compensation current of zone 1 / 3 / 7 / 9: I=0.0786*Toc+10.245

[0161] Compensation current of zone 2 / 4 / 6 / 8: I=0.0786*Toc+9.4453

[0162] Compensation current of zone 5: I = 0.0786*Toc+8.4453

[0163] Wherein, I is the compensation current, and Toc is the first temperature.

[0164] Optionally, the compensation current is linearly related to the first temperature, and the compensation current is the sum of the product of the first constant and the first temperature Toc and the second constant.

[0165] Optionally, the corresponding relationships between the compensation currents of all display sub-areas and the first temperature are pre-stored, and in the corresponding relationships between the compensation currents of all display sub-areas and the first temperature, the first constant is the same, and the second constant is adjusted according to the brightness compensation group to which the display sub-area belongs.

[0166] Based on the corresponding relationship between the compensation current and the first temperature, the relevant data of the retest brightness is obtained as shown in Table 6 below.

[0167] Table 6: Relationship between each display sub-area and brightness after adjusting the compensation current

[0168]

[0169]

[0170] By comparing the relationship tables of each display sub-area and brightness in Table 6 and Table 2, it can be seen that after determining the compensation current output through the brightness compensation method of the display panel of the embodiment of the present application, the brightness stability is improved from 17.65 to 0.8%, and the uniformity is improved from 79.4% to 95.2%. The stability and uniformity of the brightness of the display area are significantly improved.

[0171] Based on the same inventive concept, the embodiment of the present application provides a brightness compensation device for a display panel, see Figure 4 As shown, the brightness compensation device 400 of the display panel includes: a first determination module 410 , a second determination module 420 and a compensation module 430 .

[0172] The first determination module 410 is used to determine a first temperature of a design position of a display area of ​​a display panel; the display area includes at least two display sub-areas.

[0173] The second determination module 420 is used to determine the brightness compensation value of each display sub-region based on the corresponding relationship between the designed brightness compensation value of each display sub-region and the first temperature.

[0174] The compensation module 430 is used to perform brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region.

[0175] Optionally, the first determination module 410 is used to obtain temperature information of a temperature sensor; the temperature sensor is arranged on the light incident side of a display backplane of the display panel; and the first temperature is determined based on a correspondence between the designed temperature information and the first temperature.

[0176] Optionally, the first determination module 410 is used to determine the position information of the temperature sensor and the position information of the designed position; based on the position information of the temperature sensor and the position information of the designed position, a correspondence between one temperature information and the first temperature is determined from at least two pre-stored correspondences between the temperature information and the first temperature as the correspondence between the designed temperature information and the first temperature.

[0177] The brightness compensation device 400 of the display panel also includes a third determination module, which is used to determine the positional relationship between each peripheral display sub-area and the central display sub-area; the display sub-area includes a central display sub-area located at the center and a peripheral display sub-area located around the central display sub-area, and the design position of the display area is the center of the display area; based on the positional relationship between each peripheral display sub-area and the central display sub-area, a corresponding relationship between a brightness compensation value and the first temperature is determined from at least two pre-stored corresponding relationships between brightness compensation values ​​and the first temperature as the corresponding relationship between the designed brightness compensation value of the peripheral display sub-area and the first temperature.

[0178] Optionally, the third determination module is also used to determine the regional brightness compensation group where each peripheral display sub-region is located based on the positional relationship between each peripheral display sub-region and the central display sub-region; each regional brightness compensation group corresponds to a corresponding relationship between a brightness compensation value and a first temperature, and the corresponding relationship between the brightness compensation value of each regional brightness compensation group and the first temperature is a linear relationship; the corresponding relationship between the brightness compensation value corresponding to the regional brightness compensation group where each peripheral display sub-region is located and the first temperature is used as the corresponding relationship between the designed brightness compensation value of the peripheral display sub-region and the first temperature.

[0179] Optionally, the third determination module is further used to obtain a corresponding relationship between a designed brightness compensation value of the central display sub-area and the first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-area and the first temperature is a linear relationship.

[0180] Optionally, the second determination module 420 is used to determine the brightness compensation value of each peripheral display sub-area based on the correspondence between the designed brightness compensation value of each peripheral display sub-area and the first temperature, and the first temperature; and determine the brightness compensation value of the central display sub-area based on the correspondence between the designed brightness compensation value of the central display sub-area and the first temperature, and the first temperature.

[0181] Optionally, the compensation module 430 is further configured to send the brightness compensation value of each display sub-region to a driver chip of the display panel, so that the driver chip performs brightness compensation on each display sub-region based on the brightness compensation value; the brightness compensation value is a compensation current.

[0182] The display panel brightness compensation device 400 of this embodiment can execute any display panel brightness compensation method provided in the embodiments of the present application, and the implementation principles are similar and will not be repeated here.

[0183] An embodiment of the present application provides a display device, including: a display panel, a temperature sensor, and a brightness compensation system of the display panel;

[0184] The temperature sensor is arranged on the light incident side of the display back plate of the display panel;

[0185] The temperature sensor is communicatively connected to the brightness compensation system of the display panel.

[0186] Optionally, the temperature sensor may be disposed at a predetermined position of the display back panel, such as the upper left corner, or within a predetermined distance from the center of the display area.

[0187] Optionally, after the temperature sensor detects the temperature, the temperature information may be returned to the brightness compensation system of the display panel via an I2C communication protocol.

[0188] Optionally, the brightness compensation system of the display panel includes an FPGA (Field-Programmable Gate Array).

[0189] Optionally, a temperature sensor is placed on the display backplane. After power-on, the temperature sensor will detect the temperature of the corresponding position and feed the temperature back to the FPGA. The FPGA will store a data table in advance. The correspondence between the temperature information of the temperature sensor and the first temperature, and the correspondence between the brightness compensation value and the first temperature can all be stored in the data table. By detecting the temperature information and based on the brightness compensation method of the display panel according to the embodiment of the present application, the corresponding compensation current is output, thereby achieving brightness stability and uniformity.

[0190] Based on the same inventive concept, an embodiment of the present application provides a brightness compensation system for a display panel, including:

[0191] Memory;

[0192] A processor, electrically connected to the memory;

[0193] The memory stores a computer program, and the computer program is executed by the processor to implement the brightness compensation method of the display panel of any embodiment of the present application.

[0194] Those skilled in the art will appreciate that the brightness compensation system of the display panel provided by the embodiment of the present application can be an electronic device, specially designed and manufactured for the desired purpose, or can also include known devices in a general-purpose computer. These devices have computer programs stored therein, which are selectively activated or reconstructed. Such a computer program can be stored in a device (e.g., computer) readable medium or in a medium suitable for storing electronic instructions and coupled to any type of bus respectively.

[0195] Compared with the prior art, the brightness compensation system of the display panel of the embodiment of the present application can perform brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region. The embodiment of the present application can perform brightness compensation on each display sub-region based on the temperature of the display region of the display panel, reduce brightness variation, thereby improving the brightness stability and uniformity of the display panel, and further improving the display effect.

[0196] In an optional embodiment, the present application provides a brightness compensation system for a display panel, such as Figure 5 As shown, Figure 5 The brightness compensation system 2000 of the display panel shown includes: a processor 2001 and a memory 2003. The processor 2001 and the memory 2003 are connected in communication with each other, for example, via a bus 2002.

[0197] Processor 2001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. Processor 2001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0198] The bus 2002 may include a path to transmit information between the above components. The bus 2002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 2002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0199] The memory 2003 can be a ROM (Read-Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (random access memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read-Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to this.

[0200] Optionally, the brightness compensation system 2000 of the display panel may further include a communication unit 2004. The communication unit 2004 may be used for receiving and sending signals. The communication unit 2004 may allow the brightness compensation system 2000 of the display panel to communicate wirelessly or wired with other devices to exchange data. It should be noted that in actual applications, the communication unit 2004 is not limited to one.

[0201] Optionally, the brightness compensation system 2000 for a display panel may further include an input unit 2005. The input unit 2005 may be used to receive input digital, character, image and / or sound information, or to generate key signal input related to user settings and function control of the brightness compensation system 2000 for a display panel. The input unit 2005 may include, but is not limited to, one or more of a touch screen, a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, a camera, a microphone, etc.

[0202] Optionally, the brightness compensation system 2000 for a display panel may further include an output unit 2006. The output unit 2006 may be used to output or display information processed by the processor 2001. The output unit 2006 may include but is not limited to one or more of a display device, a speaker, a vibration device, and the like.

[0203] Although Figure 5 The brightness compensation system 2000 of the display panel having various devices is shown, but it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have instead.

[0204] Optionally, the memory 2003 is used to store application code for executing the solution of the present application, and the execution is controlled by the processor 2001. The processor 2001 is used to execute the application code stored in the memory 2003 to implement any display panel brightness compensation method provided in the embodiments of the present application.

[0205] Compared with the prior art, the brightness compensation system of the display panel of the embodiment of the present application can perform brightness compensation on each display sub-region based on the brightness compensation value of each display sub-region. The embodiment of the present application can perform brightness compensation on each display sub-region based on the temperature of the display region of the display panel, reduce brightness variation, thereby improving the brightness stability and uniformity of the display panel, and further improving the display effect.

[0206] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which implements the brightness compensation method of any embodiment of the present application when the computer program is executed by a processor.

[0207] The computer-readable medium of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0208] In an embodiment of the present application, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device, or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in combination with an instruction execution system, device, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0209] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0210] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0211] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0212] It should be understood that, although the various steps in the flowchart of the accompanying drawings are displayed in sequence according to the indication of the arrows, the order of implementation of these steps is not limited to the order indicated by the arrows. Unless there is a clear description herein, in some implementation scenarios of the embodiments of the present application, the steps in each process can be performed in other orders according to demand. Moreover, some or all of the steps in each flow chart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, or may be executed at different times in different scenarios at the execution time, and the execution order of these sub-steps or stages may be flexibly configured according to demand, and the embodiments of the present application do not limit this.

[0213] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A brightness compensation method for a display panel, characterized in that: include: Determining a first temperature at a design position of a display area of ​​the display panel; The display area includes at least two display sub-areas; Determining a brightness compensation value for each of the display sub-regions based on a correspondence between the designed brightness compensation value for each of the display sub-regions and the first temperature; Based on the brightness compensation value of each display sub-area, brightness compensation is performed on each display sub-area, the brightness compensation value is a compensation current, the compensation current is linearly related to the first temperature, and the compensation current is the sum of a product of a first constant and the first temperature and a second constant; The method further comprises: Determine the positional relationship between each peripheral display sub-region and the central display sub-region; the display sub-region includes a central display sub-region located in the center and peripheral display sub-regions located around the central display sub-region, and the design position of the display region is the center of the display region; Based on the positional relationship between each of the peripheral display sub-regions and the central display sub-region, determine a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region; And, determining the brightness compensation value of each display sub-area based on the corresponding relationship between the designed brightness compensation value of each display sub-area and the first temperature includes: Determining a brightness compensation value of each of the peripheral display sub-regions based on a correspondence between the designed brightness compensation value of each of the peripheral display sub-regions and the first temperature, and the first temperature; The method further comprises: Acquire a corresponding relationship between a designed brightness compensation value of the central display sub-area and a first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-area and the first temperature is a linear relationship; And, determining the brightness compensation value of each display sub-area based on the corresponding relationship between the designed brightness compensation value of each display sub-area and the first temperature includes: The brightness compensation value of the central display sub-region is determined based on the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature, and the first temperature.

2. The brightness compensation method of a display panel according to claim 1, characterized in that: The determining of a first temperature of a design position of a display area of ​​the display panel includes: Acquiring temperature information from a temperature sensor; the temperature sensor is disposed on a light incident side of a display backplane of the display panel; The first temperature is determined based on the designed corresponding relationship between the temperature information and the first temperature.

3. The brightness compensation method of a display panel according to claim 2, characterized in that: The determining the first temperature based on the correspondence between the designed temperature information and the first temperature includes: Determining the position information of the temperature sensor and the position information of the designed position; Based on the position information of the temperature sensor and the position information of the designed position, a correspondence between one temperature information and the first temperature is determined from at least two pre-stored correspondences between the temperature information and the first temperature as the designed correspondence between the temperature information and the first temperature.

4. The brightness compensation method of a display panel according to claim 1, characterized in that: Also includes: The determining, based on the positional relationship between each peripheral display sub-region and the central display sub-region, a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region comprises: Based on the positional relationship between each of the peripheral display sub-regions and the central display sub-region, determining a regional brightness compensation group where each of the peripheral display sub-regions is located; each of the regional brightness compensation groups corresponds to a corresponding relationship between a brightness compensation value and a first temperature, and the corresponding relationship between the brightness compensation value of each of the regional brightness compensation groups and the first temperature is a linear relationship; The correspondence between the brightness compensation value corresponding to the regional brightness compensation group where each peripheral display sub-region is located and the first temperature is used as the correspondence between the designed brightness compensation value and the first temperature of the peripheral display sub-region.

5. The brightness compensation method of a display panel according to claim 1, characterized in that: The performing brightness compensation on each of the display sub-areas based on the brightness compensation value of each of the display sub-areas comprises: The brightness compensation value of each display sub-area is sent to a driving chip of the display panel, so that the driving chip performs brightness compensation on each display sub-area based on the brightness compensation value; the brightness compensation value is a compensation current.

6. A brightness compensation device for a display panel, characterized in that: include: A first determining module, configured to determine a first temperature at a design position of a display area of ​​a display panel; The display area includes at least two display sub-areas; A second determination module, configured to determine a brightness compensation value of each of the display sub-regions based on a correspondence between the designed brightness compensation value of each of the display sub-regions and the first temperature; a compensation module, configured to perform brightness compensation on each of the display sub-areas based on a brightness compensation value of each of the display sub-areas, wherein the brightness compensation value is a compensation current, the compensation current is linearly related to the first temperature, and the compensation current is a sum of a product of a first constant and the first temperature and a second constant; The first determination module is further used to determine the positional relationship between each peripheral display sub-area and the central display sub-area; the display sub-area includes a central display sub-area located in the center and peripheral display sub-areas located around the central display sub-area, and the design position of the display area is the center of the display area; Based on the positional relationship between each of the peripheral display sub-regions and the central display sub-region, determine a correspondence relationship between the brightness compensation value and the first temperature from at least two pre-stored correspondence relationships between the brightness compensation value and the first temperature as the correspondence relationship between the designed brightness compensation value and the first temperature of the peripheral display sub-region; The second determination module is specifically configured to determine the brightness compensation value of each of the peripheral display sub-regions based on the corresponding relationship between the designed brightness compensation value of each of the peripheral display sub-regions and the first temperature, and the first temperature; The first determination module is further used to obtain a corresponding relationship between the designed brightness compensation value of the central display sub-area and the first temperature; the corresponding relationship between the designed brightness compensation value of the central display sub-area and the first temperature is a linear relationship; The second determination module is specifically configured to determine the brightness compensation value of the central display sub-region based on the corresponding relationship between the designed brightness compensation value of the central display sub-region and the first temperature, and the first temperature.

7. A brightness compensation system for a display panel, characterized in that: include: Memory; A processor, electrically connected to the memory; The memory stores a computer program, and the computer program is executed by the processor to implement the brightness compensation method of the display panel according to any one of claims 1 to 5.

8. A display device, characterized in that: include: A display panel, a temperature sensor, and a brightness compensation system for a display panel as claimed in claim 7; The temperature sensor is arranged on the light incident side of the display backplane of the display panel; The temperature sensor is communicatively connected to a brightness compensation system of the display panel.

9. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the brightness compensation method according to any one of claims 1 to 5 is implemented.

Images