A brightness compensation method of a display panel and a brightness compensation device of a display panel

Abstract

The embodiment of the present application discloses a display panel brightness compensation method and a display panel brightness compensation device. The method comprises the following steps: obtaining an aging operation parameter of a display panel; determining an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging operation parameter; and performing brightness compensation on the display panel based on an input brightness value of the display panel according to the aging compensation amount. The technical scheme provided by the embodiment solves the problem of uneven display brightness of the display panel and improves the display effect of the display panel.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display panel brightness compensation method and a display panel brightness compensation device. BACKGROUND

[0002] With the development of display technology, people have higher and higher requirements for display panels. The existing display panel will have a decrease in display brightness after running for a certain period of time, and there is a problem of uneven display brightness, which affects the display effect of the display panel. SUMMARY

[0003] Embodiments of the present application provide a display panel brightness compensation method and a display panel brightness compensation device to solve the problem of uneven display brightness of the display panel, which affects the display effect of the display panel.

[0004] To achieve the above technical problems, the present application adopts the following technical solutions:

[0005] Embodiments of the present application provide a display panel brightness compensation method, comprising:

[0006] obtaining an aging running parameter of a display panel;

[0007] determining an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging running parameter;

[0008] performing brightness compensation on the display panel based on an input brightness value of the display panel according to the aging compensation amount.

[0009] Optionally, the obtaining of the aging running parameter of the display panel comprises:

[0010] obtaining current information of a sub-pixel of at least one light-emitting color of the display panel;

[0011] obtaining temperature information of the display panel;

[0012] obtaining a lighting duration of the display panel.

[0013] Optionally, the determining of the aging compensation amount of the display panel based on the compensation factor of the display panel according to the aging running parameter comprises:

[0014] determining a first compensation value of the sub-pixel of at least one light-emitting color based on a current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel;

[0015] According to the temperature information of the display panel, a second compensation value corresponding to the temperature information of the display panel is determined based on a temperature compensation factor of the display panel;

[0016] According to the lighting duration of the display panel, a third compensation value corresponding to the lighting duration of the display panel is determined based on a material aging compensation factor of the display panel;

[0017] According to the first compensation value, the second compensation value and the third compensation value, an aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel is determined.

[0018] Optionally, the determining of the first compensation value of the sub-pixel of at least one light-emitting color based on the current information of the sub-pixel of at least one light-emitting color of the display panel and the current compensation factor of the display panel comprises:

[0019] The current information of the sub-pixel of at least one light-emitting color of the display panel is integrated with respect to a time parameter to obtain the first compensation value of the sub-pixel of at least one light-emitting color.

[0020] Optionally, the determining of the aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel based on the first compensation value, the second compensation value and the third compensation value comprises:

[0021] The aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel is obtained according to the product of the first compensation value, the second compensation value and the third compensation value.

[0022] Optionally, the brightness compensation of the display panel based on the aging compensation amount and the input brightness value of the display panel comprises:

[0023] The compensation brightness of the display panel is determined according to the sum of the aging compensation amount of the display panel and the input brightness value of the display panel.

[0024] The amplitude of the power supply voltage of the sub-pixel of the display panel is adjusted according to the compensation brightness of the display panel, so as to adjust the brightness of the sub-pixel of the display panel.

[0025] Optionally, the brightness compensation of the display panel based on the aging compensation amount and the input brightness value of the display panel comprises:

[0026] The compensation brightness of the display panel is determined according to the product of the aging compensation amount of the display panel and the input brightness value of the display panel.

[0027] Adjust the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the display panel.

[0028] Optionally, the adjusting the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the display panel, comprises:

[0029] Adjusting the amplitude of the first power supply voltage of the sub-pixel of the first light-emitting color of the display panel in the preset area according to the compensation luminance corresponding to the sub-pixel of the first light-emitting color; and / or,

[0030] Adjusting the amplitude of the second power supply voltage of the sub-pixel of the second light-emitting color of the display panel in the preset area according to the compensation luminance corresponding to the sub-pixel of the second light-emitting color; and / or,

[0031] Adjusting the amplitude of the third power supply voltage of the sub-pixel of the third light-emitting color of the display panel in the preset area according to the compensation luminance corresponding to the sub-pixel of the third light-emitting color.

[0032] Optionally, the cathode of the sub-pixel of the first light-emitting color is independently arranged from the cathode of the sub-pixel of the second light-emitting color and the cathode of the sub-pixel of the third light-emitting color;

[0033] The compensation luminance of the sub-pixel of the first light-emitting color is different from the compensation luminance of the sub-pixel of the second light-emitting color and the compensation luminance of the sub-pixel of the third light-emitting color;

[0034] The amplitude of the first power supply voltage is different from the amplitude of the second power supply voltage and the amplitude of the third power supply voltage.

[0035] Optionally, the display panel is divided into a plurality of display areas, and the cathodes of the sub-pixels of different colors in each display area are independently arranged from each other, and the cathodes of the sub-pixels of the same color are electrically connected;

[0036] Optionally, the display panel has a plurality of reference display areas arranged in the column direction, and the luminance compensation of the same row of the display panel is referenced to the corresponding reference display area.

[0037] According to another aspect of the present application, the present application provides a luminance compensation device of a display panel, comprising:

[0038] The acquisition module is configured to acquire an aging operation parameter of the display panel.

[0039] The calculation module is configured to determine an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging operation parameter.

[0040] A compensation module is configured to perform luminance compensation on the display panel based on an input luminance value of the display panel according to the aging compensation amount.

[0041] The display panel luminance compensation method provided by the embodiment of the present application can compensate the display panel according to the aging operation parameter and the compensation factor of the display panel, without compensating according to the display gray scale of the display panel, thereby improving the compensation efficiency, improving the display unevenness caused by aging of the display panel, and improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the contents of the embodiments of the present application and the drawings without creative labor.

[0043] Figure 1 is a flowchart of a display panel luminance compensation method provided by the embodiment of the present application;

[0044] Figure 2 is a structural schematic diagram of a display panel driving circuit provided by the embodiment of the present application;

[0045] Figure 3 is a flowchart of another display panel luminance compensation method provided by the embodiment of the present application;

[0046] Figure 4 is a flowchart of another display panel luminance compensation method provided by the embodiment of the present application;

[0047] Figure 5 is a flowchart of another display panel luminance compensation method provided by the embodiment of the present application;

[0048] Figure 6 is a structural schematic diagram of a display panel provided by the embodiment of the present application;

[0049] Figure 7 is an aging curve diagram of different light-emitting color sub-pixels of a display panel provided by the embodiment of the present application;

[0050] Figure 8 is a schematic diagram of a display panel luminance compensation device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0051] The application will be described in further detail below with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the scope of the application. In addition, it should be noted that, for the sake of brevity, only structures related to the application are shown and described in the drawings.

[0052] Based on the above technical problems, the embodiments of the present application provide the following solutions:

[0053] Figure 1 is a flowchart of a brightness compensation method of a display panel provided by an embodiment of the present application. Referring to Figure 1 The brightness compensation method of the display panel provided by the embodiments of the present application includes:

[0054] S101, obtaining an aging running parameter of a display panel.

[0055] Specifically, after the display panel runs for a certain time, the material of the light-emitting layer of the sub-pixel of the display panel will age. The light-emitting brightness of the light-emitting layer of the aged sub-pixel will decrease. Because the aging curves of the materials of the light-emitting layers of sub-pixels of different light-emitting colors are different, the display panel will have a display unevenness problem after aging.

[0056] The aging running parameter can represent the current aging state of the display panel. The aging running parameter includes the running time length of the display panel, the material aging state of the light-emitting layer of the display panel, and the size of the driving current flowing through the sub-pixel, etc. By obtaining the aging running parameter of the display panel, the aging state of the display panel can be better obtained, and the aging running state of the display panel can be accurately obtained.

[0057] S102, determining an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging running parameter.

[0058] Specifically, the compensation factor includes a current compensation factor, a temperature compensation factor, and a material aging compensation factor of the display panel, etc. The compensation factor can be obtained through experiments before the display panel is shipped. The compensation factor can reflect the corresponding relationship table between the running time length of the display panel and the light-emitting efficiency or the brightness decay.

[0059] The aging compensation amount refers to the difference between the current light-emitting brightness of the display panel and the target light-emitting brightness, that is, after the display panel is compensated by the aging compensation amount, the light-emitting brightness of the display panel can reach the initial light-emitting brightness when the display panel is shipped.

[0060] According to the aging operation parameter, a look-up table in a compensation factor of the display panel is searched to find an aging factor of the display panel, and the aging compensation amount of the display panel is determined according to the aging factor. In this way, the aging compensation amount of the display panel can be matched with the compensation amount required by the current aging state of the display panel, and the compensation effect of the display panel is improved.

[0061] In S103, the display panel is compensated in luminance based on the input luminance value of the display panel according to the aging compensation amount.

[0062] Specifically, the input luminance value of the display panel is compensated, and the compensation amplitude can be the aging compensation amount. The luminance of the display panel after compensation is increased to meet the display requirement of the display panel. The compensation data amount is reduced, and the compensation efficiency is improved without compensation according to the display gray scale.

[0063] In an optional embodiment, the luminance of the display panel can be adjusted by adjusting the current flowing through the light-emitting element based on the input luminance value of the display panel according to the aging compensation amount.

[0064] The display panel luminance compensation method provided in the embodiment can obtain the aging operation parameter of the display panel, determine the aging compensation amount of the display panel based on the compensation factor of the display panel according to the aging operation parameter, and compensate the display panel in luminance based on the input luminance value of the display panel according to the aging compensation amount. In this way, the display panel can be compensated according to the aging operation parameter and the compensation factor of the display panel, the compensation efficiency is improved without compensation according to the display gray scale of the display panel, the display unevenness caused by aging of the display panel is improved, and the display effect of the display panel is improved.

[0065] Optionally, Figure 2 is a structural schematic diagram of a display panel driving circuit provided in an embodiment of the present application. Based on the above embodiment, referring to Figure 2 , the cathode of the sub-pixel of the first light-emitting color is independently arranged with the cathode of the sub-pixel of the second light-emitting color and the cathode of the sub-pixel of the third light-emitting color.

[0066] Specifically, the cathodes of the sub-pixels of different light-emitting colors are respectively manufactured to facilitate accurate acquisition of the driving current of the sub-pixel of a single light-emitting color. In this way, the current information of the sub-pixel of the first light-emitting color, the current information of the sub-pixel of the second light-emitting color, or the current information of the sub-pixel of the third light-emitting color can be respectively acquired.

[0067] It should be noted that, Figure 2The first light-emitting color is red, the second light-emitting color is green, and the third light-emitting color is blue. The current information I1 flowing through the red sub-pixel R, the current information I2 flowing through the green sub-pixel G, and the current information I3 flowing through the blue sub-pixel B are collectively referred to as the current information I. The red sub-pixel R is connected between the power supply line ELVDD and the first power supply voltage ELVSS1. The green sub-pixel G is connected between the power supply line ELVDD and the second power supply voltage ELVSS2. The blue sub-pixel B is connected between the power supply line ELVDD and the third power supply voltage ELVSS3.

[0068] In an optional embodiment, the aging operation parameter of the display panel is obtained by: obtaining current information of a sub-pixel of at least one light-emitting color of the display panel; obtaining temperature information of the display panel; and obtaining a lighting duration of the display panel.

[0069] Specifically, the aging operation parameter includes the current information of the sub-pixel of at least one light-emitting color of the display panel, the temperature information of the display panel when the display panel displays a picture, and the total lighting duration of the display panel, for example, 100 hours.

[0070] Optionally, Figure 3 is a flowchart of another display panel brightness compensation method provided by an embodiment of the present application. Based on the above-described embodiments, referring to Figure 3 , the display panel brightness compensation method provided by an embodiment of the present application includes:

[0071] S101, obtaining an aging operation parameter of a display panel.

[0072] S201, determining a first compensation value of a sub-pixel of at least one light-emitting color of the display panel based on a current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel.

[0073] Specifically, the current compensation factor can be a current compensation parameter related to a driving current of the sub-pixel. According to the current information of the sub-pixel of at least one light-emitting color of the display panel, the first compensation value of the sub-pixel of the light-emitting color is obtained by looking up a table based on the current compensation factor of the display panel.

[0074] For example, according to the current information of a red sub-pixel of the display panel, the first compensation value of the red sub-pixel is obtained by looking up a table based on the current compensation factor of the display panel. According to the current information of a green sub-pixel of the display panel, the first compensation value of the green sub-pixel is obtained by looking up a table based on the current compensation factor of the display panel. According to the current information of a blue sub-pixel of the display panel, the first compensation value of the blue sub-pixel is obtained by looking up a table based on the current compensation factor of the display panel.

[0075] S202, determine a second compensation value corresponding to the temperature information of the display panel based on a temperature compensation factor of the display panel according to the temperature information of the display panel.

[0076] Specifically, the second compensation value corresponding to the current temperature information is obtained by looking up a table based on the temperature compensation factor of the display panel according to the current temperature information of the display panel.

[0077] S203, determine a third compensation value corresponding to the lighting duration of the display panel based on a material aging compensation factor of the display panel according to the lighting duration of the display panel.

[0078] Specifically, the third compensation value corresponding to the lighting duration of the display panel is obtained by looking up a table based on the material aging compensation factor of the display panel according to the lighting duration of the display panel.

[0079] S204, determine the aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel according to the first compensation value, the second compensation value and the third compensation value.

[0080] Specifically, the aging compensation amount of the red sub-pixel of the display panel is determined by weighted operation or multiplication operation according to the first compensation value corresponding to the current information of the red sub-pixel, the second compensation value corresponding to the temperature information and the third compensation value corresponding to the lighting duration of the display panel. The aging compensation amount of the green sub-pixel of the display panel is determined by weighted operation or multiplication operation according to the first compensation value corresponding to the current information of the green sub-pixel, the second compensation value corresponding to the temperature information and the third compensation value corresponding to the lighting duration of the display panel. The aging compensation amount of the blue sub-pixel of the display panel is determined by weighted operation or multiplication operation according to the first compensation value corresponding to the current information of the blue sub-pixel, the second compensation value corresponding to the temperature information and the third compensation value corresponding to the lighting duration of the display panel.

[0081] S103, perform luminance compensation on the display panel based on the input luminance value of the display panel according to the aging compensation amount.

[0082] In an optional embodiment, the determination of the first compensation value of the sub-pixel of at least one light-emitting color based on the current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel comprises:

[0083] Integrate the current information of the sub-pixel of at least one light-emitting color of the display panel with respect to a time parameter to obtain the first compensation value of the sub-pixel of at least one light-emitting color.

[0084] Specifically, since the current information of the sub-pixel is an analog quantity, compared with integrating the gray scale, integrating the current information of the sub-pixel of at least one light-emitting color of the display panel with respect to the time parameter is simpler, the amount of data calculated is smaller, the calculation resources and storage resources occupied by the first compensation value are saved, and the demand for the driving chip is reduced.

[0085] In another optional implementation, the aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel is determined according to a product of the first compensation value, the second compensation value, and the third compensation value.

[0086] In another optional implementation, the aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel is determined according to a product of the first compensation value, the second compensation value, and the third compensation value.

[0087] Specifically, in this way, the aging compensation amount of the sub-pixel of the display panel includes the product of the first compensation value, the second compensation value, and the third compensation value, so that the aging compensation amount integrates the current information of the sub-pixel, the temperature information of the display panel, and the material aging factor of the sub-pixel related to the lighting time of the display panel. In this way, the brightness of the sub-pixel of the display panel is compensated only according to the aging compensation amount, that is, the influence of the current information of the sub-pixel on the display brightness is integrated, the influence of the material aging factor of the sub-pixel of the display panel on the brightness is also considered, and the influence of the current temperature of the display panel on the light-emitting brightness of the sub-pixel is also considered, and the compensation efficiency is further improved.

[0088] Optionally, Figure 4 is a flowchart of another display panel brightness compensation method provided by the embodiment of the present application. Referring to Figure 4 The display panel brightness compensation method provided by the embodiment of the present application includes:

[0089] S101, obtaining an aging running parameter of a display panel.

[0090] S102, determining an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging running parameter.

[0091] S301, determining a compensation brightness of the display panel according to a sum of the aging compensation amount of the display panel and the input brightness value of the display panel.

[0092] Specifically, when the aging compensation amount is a gray scale, the input brightness of the display panel can be added to the aging compensation amount to obtain the compensation brightness of the display panel.

[0093] S302, adjust the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the sub-pixel of the display panel.

[0094] Specifically, the power supply voltage can be a low potential signal. According to the compensation luminance of the sub-pixel of at least one light-emitting color of the display panel, the amplitude of the power supply voltage of the sub-pixel of the corresponding light-emitting color of the display panel is increased, so as to increase the luminance of the sub-pixel of the corresponding light-emitting color of the display panel.

[0095] An optional embodiment, Figure 5 is a flowchart of another display panel luminance compensation method provided by the embodiment of the present application. Referring to Figure 5 , the display panel luminance compensation method provided by the embodiment of the present application comprises:

[0096] S101, obtain the aging operation parameter of the display panel.

[0097] S102, determine the aging compensation amount of the display panel based on the compensation factor of the display panel according to the aging operation parameter.

[0098] S401, determine the compensation luminance of the display panel according to the product of the aging compensation amount of the display panel and the input luminance value of the display panel.

[0099] Specifically, when the aging compensation amount is a gain value, the input luminance of the display panel can be multiplied by the aging compensation amount to obtain the compensation luminance of the display panel.

[0100] S402, adjust the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the display panel.

[0101] An optional embodiment, Figure 6 is a structural schematic diagram of a display panel provided by the embodiment of the present application. In combination with Figure 2 and Figure 6 , the adjusting the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the display panel, comprises:

[0102] According to the compensation brightness corresponding to the sub-pixel of the first light-emitting color, the amplitude of the first power voltage of the sub-pixel of the first light-emitting color in the preset area of the display panel is adjusted; and / or, according to the compensation brightness corresponding to the sub-pixel of the second light-emitting color, the amplitude of the second power voltage of the sub-pixel of the second light-emitting color in the preset area of the display panel is adjusted; and / or, according to the compensation brightness corresponding to the sub-pixel of the third light-emitting color, the amplitude of the third power voltage of the sub-pixel of the third light-emitting color in the preset area of the display panel is adjusted.

[0103] Specifically, the preset area can be a display area of the display panel, or a local area of the display panel, for example, a 3*3 sub-pixel matrix, or a 5*5 sub-pixel matrix, etc. It should be noted that when the display panel is a small-size display panel, the preset area can be the full screen of the display panel. When the display panel is a medium or large-size display panel, the preset area can be a local area of the display panel.

[0104] The first light-emitting color can be red, the second light-emitting color can be green, and the third light-emitting color can be blue. The driving chip IC transmits the low-potential power voltage ELVSS and the high-potential power voltage ELVDD to the display panel.

[0105] For example, in combination with Figure 2 and Figure 6 , according to the compensation brightness corresponding to the red sub-pixel, the amplitude of the first power voltage ELVSS1 of the red sub-pixel in the preset area of the display panel is adjusted. According to the compensation brightness corresponding to the green sub-pixel, the amplitude of the second power voltage ELVSS2 of the green sub-pixel in the preset area of the display panel is adjusted. According to the compensation brightness corresponding to the blue sub-pixel, the amplitude of the third power voltage ELVSS3 of the blue sub-pixel in the preset area is adjusted.

[0106] Optionally, Figure 7 is an aging curve diagram of different light-emitting color sub-pixels of a display panel provided by an embodiment of the present application. Referring to Figure 7 , the compensation brightness of the first light-emitting color sub-pixel is different from that of the second light-emitting color sub-pixel and the third light-emitting color sub-pixel; and the amplitudes of the first power voltage, the second power voltage, and the third power voltage are different.

[0107] Specifically, because the decay efficiencies of different light-emitting color sub-pixels are different. Referring to Figure 7The luminous intensity of the blue sub-pixel decreases over time to a greater extent than the luminous intensity of the red sub-pixel decreases over time, and the luminous intensity of the blue sub-pixel decreases over time to a greater extent than the luminous intensity of the green sub-pixel decreases over time. The compensation luminance of the sub-pixel of the first luminous color is different from the compensation luminance of the sub-pixel of the second luminous color and the sub-pixel of the third luminous color, so that the compensation luminance of the sub-pixel of different luminous colors matches the luminance decrease extent of the sub-pixel of the corresponding luminous color. By adjusting the amplitudes of the first power supply voltage, the second power supply voltage, and the third power supply voltage, the compensation effect of the sub-pixel of each luminous color is good, the compensation effect of the display panel is further improved, and the display effect of the display panel is improved.

[0108] Optionally, on the basis of each of the above embodiments, the display panel can be divided into a plurality of display areas, and the cathodes of sub-pixels of different colors in each display area are independently arranged from each other, and the cathodes of sub-pixels of the same color are electrically connected.

[0109] Specifically, the display panel can be divided into at least two display areas, for example, 3*3 display areas, 5*5 display areas, or the like. By arranging the cathodes of sub-pixels of different colors in each display area to be independently arranged from each other and the cathodes of sub-pixels of the same color to be electrically connected, each display area of the display panel can be independently compensated, and the compensation extent of different display areas can be different. The compensation luminance of the sub-pixel of different luminous colors in the same display area can match the luminance decrease extent of the sub-pixel of the corresponding luminous color in the display area. In this way, the compensation effect of the sub-pixel of each luminous color in each display area is good, the display panel is compensated in a display area manner, the compensation effect of the display panel is further improved, and the display effect of the display panel is improved.

[0110] Optionally, on the basis of each of the above embodiments, the display panel has a plurality of reference display areas arranged in the column direction, and the luminance compensation of the same row of the display panel is referenced to the aging compensation of the corresponding reference display area.

[0111] Specifically, the display panel is prone to present different aging degrees in the column direction. By arranging a plurality of reference display areas in the column direction, for example, upper, middle, and lower reference display areas are arranged in the column direction of the display panel. Different reference display areas can have different aging compensation amounts, and the luminance compensation of the same row of the display panel is referenced to the aging compensation amount of the corresponding reference display area. In this way, the compensation effect of the display panel is further improved in the column direction of the display panel, and the display effect of the display panel is improved.

[0112] Figure 8 is a schematic diagram of a luminance compensation device of a display panel provided by an embodiment of the present application. On the basis of the above embodiments, referring to Figure 8The application provides a display panel brightness compensation device 100, which comprises:

[0113] An acquisition module 41 is configured to acquire an aging operation parameter of a display panel;

[0114] A calculation module 42 is configured to determine an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging operation parameter.

[0115] A compensation module 43 is configured to perform brightness compensation on the display panel based on an input brightness value of the display panel according to the aging compensation amount.

[0116] Optionally, the acquisition module comprises:

[0117] A current acquisition unit is configured to acquire current information of a sub-pixel of at least one light-emitting color of the display panel.

[0118] A temperature acquisition unit is configured to acquire temperature information of the display panel.

[0119] A time reading unit is configured to acquire a lighting duration of the display panel.

[0120] Optionally, the calculation module comprises:

[0121] A first calculation unit is configured to determine a first compensation value of the sub-pixel of at least one light-emitting color based on a current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel.

[0122] A second calculation unit is configured to determine a second compensation value corresponding to the temperature information of the display panel based on a temperature compensation factor of the display panel according to the temperature information of the display panel.

[0123] A third calculation unit is configured to determine a third compensation value corresponding to the lighting duration of the display panel based on a material aging compensation factor of the display panel according to the lighting duration of the display panel.

[0124] A fourth calculation unit is configured to determine an aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel according to the first compensation value, the second compensation value and the third compensation value.

[0125] Optionally, the first calculation unit is specifically configured to integrate the current information of the sub-pixel of at least one light-emitting color of the display panel with respect to a time parameter to obtain the first compensation value of the sub-pixel of at least one light-emitting color.

[0126] Optionally, on the basis of the above-mentioned embodiment, the fourth calculation unit is specifically configured to obtain the aging compensation value of the sub-pixel of at least one light-emitting color of the display panel according to a product of the first compensation value, the second compensation value and the third compensation value.

[0127] Optionally, on the basis of the above-mentioned embodiment, the compensation module comprises:

[0128] The first compensation unit is configured to determine a compensation luminance of the display panel according to a sum of the aging compensation value of the display panel and the input luminance value of the display panel.

[0129] The second compensation unit is configured to adjust the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the sub-pixel of the display panel.

[0130] Optionally, on the basis of the above-mentioned embodiment, the first compensation unit is further configured to determine the compensation luminance of the display panel according to a product of the aging compensation value of the display panel and the input luminance value of the display panel.

[0131] The second compensation unit is configured to adjust the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel, so as to adjust the luminance of the display panel.

[0132] Optionally, on the basis of the above-mentioned embodiment, the second compensation unit is specifically configured to:

[0133] adjust the amplitude of the first power supply voltage of the sub-pixel of the first light-emitting color of the display panel in the preset region according to the compensation luminance corresponding to the sub-pixel of the first light-emitting color; and / or,

[0134] adjust the amplitude of the second power supply voltage of the sub-pixel of the second light-emitting color of the display panel in the preset region according to the compensation luminance corresponding to the sub-pixel of the second light-emitting color; and / or,

[0135] adjust the amplitude of the third power supply voltage of the sub-pixel of the third light-emitting color of the display panel in the preset region according to the compensation luminance corresponding to the sub-pixel of the third light-emitting color.

[0136] Optionally, on the basis of the above-mentioned embodiment, the cathode of the sub-pixel of the first light-emitting color is independently arranged from the cathode of the sub-pixel of the second light-emitting color and the cathode of the sub-pixel of the third light-emitting color.

[0137] The compensation luminance of the sub-pixel of the first light-emitting color is different from the compensation luminance of the sub-pixel of the second light-emitting color and the compensation luminance of the sub-pixel of the third light-emitting color.

[0138] The first power supply voltage is different from the amplitudes of the second power supply voltage and the third power supply voltage.

[0139] The brightness compensation device of the display panel provided by the embodiment acquires the aging operation parameter of the display panel through the acquisition module, determines the aging compensation amount of the display panel based on the compensation factor of the display panel according to the aging operation parameter through the calculation module, and compensates the brightness of the display panel based on the input brightness value of the display panel according to the aging compensation amount through the compensation module. In this way, the display panel can be compensated according to the aging operation parameter and the compensation factor of the display panel, without the need for compensation according to the display gray scale of the display panel, thereby improving the compensation efficiency, improving the display unevenness caused by aging of the display panel, and improving the display effect of the display panel.

[0140] It should be noted that the above are only the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A method for brightness compensation of a display panel, characterized in that, The method comprises the following steps: obtaining an aging operation parameter of a display panel; determining an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging operation parameter; performing luminance compensation on the display panel based on an input luminance value of the display panel by adjusting the amplitude of the power supply voltage of the sub-pixel according to the aging compensation amount; the step of determining the aging compensation amount of the display panel based on the compensation factor of the display panel according to the aging operation parameter comprises: determining a first compensation value of the sub-pixel of at least one light-emitting color based on a current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel; determining a second compensation value corresponding to the temperature information of the display panel based on a temperature compensation factor of the display panel according to the temperature information of the display panel; determining a third compensation value corresponding to the lighting duration of the display panel based on a material aging compensation factor of the display panel according to the lighting duration of the display panel; determining the aging compensation amount of the sub-pixel of at least one light-emitting color of the display panel according to the product of the first compensation value, the second compensation value and the third compensation value; the step of determining the first compensation value of the sub-pixel of at least one light-emitting color based on the current compensation factor of the display panel according to the current information of the sub-pixel of at least one light-emitting color of the display panel comprises: integrating the current information of the sub-pixel of at least one light-emitting color of the display panel with respect to a time parameter to obtain the first compensation value of the sub-pixel of at least one light-emitting color; the display panel is divided into a plurality of display areas, the cathodes of sub-pixels of different colors in each display area are independently arranged, and the cathodes of sub-pixels of the same color are electrically connected; each display area is independently compensated, and the compensation luminance of the sub-pixels of different colors in each display area is different; the display panel has a plurality of reference display areas arranged in the column direction, and the luminance compensation of the same row of the display panel is referenced to the corresponding reference display area.

2. The method of claim 1, wherein, the step of obtaining the aging operation parameter of the display panel comprises: obtaining the current information of the sub-pixel of at least one light-emitting color of the display panel; obtaining the temperature information of the display panel; obtaining the lighting duration of the display panel.

3. The method of claim 1, wherein, the step of performing luminance compensation on the display panel based on the input luminance value of the display panel according to the aging compensation amount comprises: determining the compensation luminance of the display panel according to the sum of the aging compensation amount of the display panel and the input luminance value of the display panel; adjusting the amplitude of the power supply voltage of the sub-pixel of the display panel according to the compensation luminance of the display panel to adjust the luminance of the sub-pixel of the display panel.

4. The method of claim 1, wherein, the step of performing luminance compensation on the display panel based on the input luminance value of the display panel according to the aging compensation amount comprises: determining the compensation luminance of the display panel according to the product of the aging compensation amount of the display panel and the input luminance value of the display panel; According to the compensation brightness of the display panel, the amplitude of the power supply voltage of the sub-pixel of the display panel is adjusted to adjust the brightness of the display panel.

5. The method according to claim 3 or 4, characterized in that, According to the compensation brightness of the display panel, the amplitude of the power supply voltage of the sub-pixel of the display panel is adjusted to adjust the brightness of the display panel, including: According to the compensation brightness corresponding to the sub-pixel of the first light-emitting color, the amplitude of the first power supply voltage of the sub-pixel of the first light-emitting color in the display panel in the preset area is adjusted; and / or, According to the compensation brightness corresponding to the sub-pixel of the second light-emitting color, the amplitude of the second power supply voltage of the sub-pixel of the second light-emitting color in the display panel in the preset area is adjusted; and / or, According to the compensation brightness corresponding to the sub-pixel of the third light-emitting color, the amplitude of the third power supply voltage of the sub-pixel of the third light-emitting color in the display panel in the preset area is adjusted.

6. The method of claim 5, wherein, the cathode of the sub-pixel of the first light-emitting color is independently arranged from the cathode of the sub-pixel of the second light-emitting color and the cathode of the sub-pixel of the third light-emitting color; the compensation brightness of the sub-pixel of the first light-emitting color is different from the compensation brightness of the sub-pixel of the second light-emitting color and the compensation brightness of the sub-pixel of the third light-emitting color; the amplitude of the first power supply voltage is different from the amplitude of the second power supply voltage and the amplitude of the third power supply voltage.

7. A luminance compensation apparatus of a display panel, which is controlled by the luminance compensation method of any one of claims 1 to 6, characterized by including: an acquisition module configured to acquire an aging operation parameter of a display panel; a calculation module configured to determine an aging compensation amount of the display panel based on a compensation factor of the display panel according to the aging operation parameter; a compensation module configured to perform brightness compensation on the display panel based on an input brightness value of the display panel according to the aging compensation amount.

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