Display control method and device, electronic device

Abstract

The application provides a display control method and device and electronic equipment, and relates to the technical field of display. The method comprises the following steps: determining the working time of a target display panel, wherein the display area of the target display panel comprises a to-be-compensated area; determining a Mura aging compensation parameter according to the working time of the target display panel; determining the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter and the Mura aging compensation parameter; and displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area. The technical scheme provided by the application can avoid the problem that the Mura phenomenon appears after the display panel is used for a long time.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display control method and device, and an electronic device. Background Art

[0002] Mura (unevenness) in active-matrix organic light-emitting diode (AMOLED) display panels refers to the phenomenon of inconsistent local brightness in the display panel. Display panels are compensated for mura before leaving the factory to ensure that the brightness of the display panel is as consistent as possible. Summary of the Invention

[0003] In view of the above problems, embodiments of the present application provide a display control method and device, and an electronic device, which solve the problem of the Mura phenomenon appearing on a display panel after long-term use.

[0004] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0005] A first aspect of an embodiment of the present application provides a display control method, comprising:

[0006] determining a working time of a target display panel, wherein a display area of ​​the target display panel includes an area to be compensated;

[0007] Determine the Mura aging compensation parameters according to the operating time of the target display panel;

[0008] Determining a grayscale to be displayed in the area to be compensated according to an input grayscale of the area to be compensated, an initial Mura compensation parameter, and a Mura aging compensation parameter;

[0009] The image of the area to be compensated is displayed according to the grayscale to be displayed of the area to be compensated.

[0010] The display control method provided in the embodiment of the present application adopts a dynamic mura compensation solution and provides different mura aging compensation parameters for different working hours of the display panel, thereby solving the problem of mura phenomenon appearing after long-term use of the display panel.

[0011] In some possible implementations, determining the mura aging compensation parameter according to the operating time of the target display panel includes:

[0012] Determine the correspondence between grayscale and Mura aging compensation parameters based on the operating time of the target display panel;

[0013] The Mura aging compensation parameter is determined according to the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameter.

[0014] In some possible implementations, when the operating time of the target display panel is greater than or equal to a preset time, the grayscale to be displayed in the area to be compensated is determined according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter.

[0015] In some possible implementations, the display control method further includes:

[0016] When the operating time of the target display panel is less than the preset time, the grayscale to be displayed in the area to be compensated is determined according to the input grayscale of the area to be compensated and the initial Mura compensation parameter.

[0017] In some possible implementations, the initial mura compensation parameters include a compensation gain coefficient and a compensation offset;

[0018] Determine the grayscale to be displayed in the area to be compensated based on the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter, including:

[0019] The input grayscale of the area to be compensated is multiplied by the compensation gain coefficient, the obtained product is added to the compensation offset, and the obtained sum is multiplied by the Mura aging compensation parameter to obtain the grayscale to be displayed in the area to be compensated.

[0020] In some possible implementations, the display area of ​​the target display panel further includes a non-Mura area;

[0021] Before determining the Mura aging compensation parameters based on the operating time of the target display panel, the following steps are also included:

[0022] Statistically analyzing the brightness of a reference area of ​​a test display panel at various grayscales under different operating times. The display area of ​​the test display panel includes a mura area and a non-mura area, and the reference area is located within the non-mura area of ​​the test display panel.

[0023] According to the brightness corresponding to multiple grayscales of the reference area of ​​the test display panel at different working hours, the corresponding relationship between the grayscales corresponding to the different working hours and the Mura aging compensation parameters is determined.

[0024] In some possible implementations, determining a correspondence between grayscales corresponding to different operating times and mura aging compensation parameters based on the brightness corresponding to multiple grayscales in a reference area of ​​a tested display panel at different operating times includes:

[0025] Obtaining a relationship coefficient between grayscale and brightness of a reference area of ​​a test display panel;

[0026] The corresponding relationship between the grayscale corresponding to the different working hours and the Mura aging compensation parameter is determined based on the relationship coefficient and the brightness corresponding to the various grayscales of the reference area of ​​the test display panel at different working hours.

[0027] In some possible implementations, the working time of the test display panel includes a working time reference point T0 and a working time reference point T0 located after the working time reference point T0. n ,

[0028] For each grayscale, the working time is T n Mura aging compensation parameters

[0029] Among them, γ is the relationship coefficient between grayscale and brightness, L n The working time is T n L0 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0, and L1 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0.

[0030] In some possible implementations, the display area of ​​the target display panel includes a main screen area and a secondary screen area, and the area to be compensated is located in the secondary screen area.

[0031] A second aspect of an embodiment of the present application provides a display control device, comprising:

[0032] A first determining module is configured to determine an operating time of a target display panel, wherein a display area of ​​the target display panel includes an area to be compensated;

[0033] A second determining module is used to determine a Mura aging compensation parameter according to the working time of the target display panel;

[0034] A third determining module is configured to determine a grayscale to be displayed in the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter;

[0035] The display driving module is used to display the image of the area to be compensated according to the gray scale to be displayed in the area to be compensated.

[0036] In some possible implementations, the second determining module is configured to:

[0037] Determine the correspondence between grayscale and Mura aging compensation parameters based on the operating time of the target display panel;

[0038] The Mura aging compensation parameter is determined according to the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameter.

[0039] In some possible implementations, the third determining module is configured to:

[0040] when the working time of the target display panel is greater than or equal to the preset time, determining the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter, and the Mura aging compensation parameter;

[0041] The third determination module is further configured to:

[0042] when the working time of the target display panel is less than the preset time, determining the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area and the initial Mura compensation parameter.

[0043] In some possible implementation manners, the initial Mura compensation parameter includes a compensation gain coefficient and a compensation offset;

[0044] The third determination module is configured to:

[0045] multiply the input gray scale of the to-be-compensated area by the compensation gain coefficient, add the compensation offset to the product, and multiply the sum by the Mura aging compensation parameter to obtain the to-be-displayed gray scale of the to-be-compensated area.

[0046] In some possible implementation manners, the display area of the target display panel further includes a non-Mura area; and the apparatus further includes a statistical module configured to:

[0047] statistically determine the luminance corresponding to a plurality of gray scales of a reference area of a test display panel at different working times, the display area of the test display panel including a Mura area and a non-Mura area, and the reference area being located in the non-Mura area of the test display panel;

[0048] determine a corresponding relationship between the gray scale corresponding to different working times and the Mura aging compensation parameter according to the luminance corresponding to a plurality of gray scales of the reference area of the test display panel at different working times.

[0049] In some possible implementation manners, the statistical module is configured to:

[0050] obtain a relationship coefficient between the gray scale and the luminance of the reference area of the test display panel;

[0051] determine a corresponding relationship between the gray scale corresponding to different working times and the Mura aging compensation parameter according to the relationship coefficient and the luminance corresponding to a plurality of gray scales of the reference area of the test display panel at different working times.

[0052] In some possible implementation manners, the working time of the test display panel includes a working time reference point T0 and a working time reference point T n ,

[0053] for each gray scale, when the working time is T nMura aging compensation parameter

[0054] wherein, γ is a relationship coefficient between gray scale and brightness, L n is the input gray scale of the reference area when the working time is T n is the input gray scale of the reference area when the working time is T0, and L0 is the brightness when the input gray scale of the reference area is this kind of gray scale when the working time is T0.

[0055] In some possible implementation manners, the display area of the target display panel includes a main screen area and a sub-screen area, and the to-be-compensated area is located in the sub-screen area.

[0056] A third aspect of an embodiment of the present application provides a chip, comprising a memory and a processor.

[0057] The memory stores a computer program, and the computer program is executed by the processor to implement the method of the first aspect.

[0058] A fourth aspect of an embodiment of the present application provides an electronic device, comprising a memory and a processor.

[0059] The memory stores a computer program, and the computer program is executed by the processor to implement the method of the first aspect.

[0060] A fifth aspect of an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method of the first aspect.

[0061] A sixth aspect of an embodiment of the present application provides a computer program product, which comprises computer program code, and when the computer program code runs on a computer, causes the computer to execute the method of the first aspect.

[0062] The display control method, device, equipment, storage medium and program product provided by the present application determine the working time of the target display panel, determine the Mura aging compensation parameter according to the working time of the target display panel, determine the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter and the Mura aging compensation parameter, and then display the picture of the to-be-compensated area according to the to-be-displayed gray scale, so as to provide different Mura aging compensation parameters for different working times of the display panel by using the dynamic Mura compensation scheme, thereby maintaining good Mura compensation effect when the display panel is aging, and solving the problem that the Mura phenomenon appears after the display panel is used for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0064] Figure 1 is a schematic diagram of a brightness characteristic curve of a display panel;

[0065] Figure 2 A flow chart of a display control method provided in one embodiment of the present application;

[0066] Figure 3 A schematic diagram of mura compensation provided in one embodiment of the present application;

[0067] Figure 4 A schematic structural diagram of a display control device provided in one embodiment of the present application;

[0068] Figure 5 A schematic diagram of the structure of a chip provided in one embodiment of the present application;

[0069] Figure 6 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0070] The inventors discovered that as AMOLED displays age, their RGB colors experience brightness decay and reduced luminous efficiency due to material or process factors, causing changes in the color and brightness of the display panel. These changes in brightness can also alter the degree of mura in the display panel. This leads to a mismatch between the mura compensation data at the factory and the mura level after extended use, causing the mura phenomenon to appear.

[0071] The inventors have found that the main reason for this problem is that the brightness characteristic curve of the Mura area (the area where Mura compensation is performed at the factory) is different from the brightness characteristic curve of the non-Mura area, such as Figure 1As shown in , curve 1 is the brightness characteristic curve of the non-mura area at time T0', curve 3 is the brightness characteristic curve of the mura area at time T0', curve 2 is the brightness characteristic curve of the non-mura area at time T1', and curve 4 is the brightness characteristic curve of the mura area at time T1'. It can be seen that at time T0', in order to make the brightness of the non-mura area and the mura area consistent, the grayscale of the mura area needs to be adjusted from g to g1; at time T1' (after aging), in order to make the brightness of the non-mura area and the mura area consistent, the grayscale of the mura area needs to be adjusted from g to g0. It can be seen that after long-term use, the aging degree of the mura area and the non-mura area is inconsistent, and the mura degree of the display panel changes. This results in a mismatch between the mura compensation data of the display panel when it leaves the factory and the mura degree of the display panel after long-term use. Mura compensation according to the mura compensation data of the display panel when it leaves the factory cannot eliminate the mura phenomenon.

[0072] To address the above technical issues, embodiments of the present application provide a display control method that adopts a dynamic mura compensation solution and provides different mura aging compensation parameters for different operating times of the display panel. This method maintains a good mura compensation effect even when the display panel ages and the mura level changes, thereby ensuring the brightness consistency of the display panel.

[0073] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0074] Figure 2 This is a flow chart of a display control method provided by an embodiment of the present application. The execution subject of the method is a display device, which can be implemented by software and / or hardware. For example, the device can include a chip. Figure 2 As shown, the method includes:

[0075] S201: Determine a working time of a target display panel, where a display area of ​​the target display panel includes an area to be compensated.

[0076] Among them, the target display panel in step S201 may be the display panel actually used. As mentioned above, as the display panel is used for a long time, its Mura degree will change. Therefore, in the embodiment of the present application, the working time of the display panel is dynamically adjusted. The working time of the display panel refers to the cumulative working time of the display panel, that is, the current cumulative working time of the display panel. The area to be compensated of the target display panel may be a Mura area. The area to be compensated may be an area that needs to be compensated for Mura at the time of leaving the factory, that is, an area that needs to be compensated using the initial Mura compensation parameters. The display area of ​​the target display panel may also include a non-Mura area.

[0077] S202: Determine a Mura aging compensation parameter according to the operating time of the target display panel.

[0078] Display panels undergo mura compensation at the factory. Initial mura compensation parameters are determined and used to adjust the grayscale of the display panel's compensated area to achieve consistent brightness. These initial mura compensation parameters are set at the factory. As the display panel ages, the mura level changes, and the initial mura compensation parameters no longer adapt to the panel's mura level. Therefore, in this step, corresponding mura aging compensation parameters are determined based on the display panel's age. These parameters are used to compensate for changes in mura levels caused by aging.

[0079] S203 : Determine a grayscale to be displayed in the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter.

[0080] It is understandable that when the display panel works for a short time and its Mura level has not changed, the brightness of the display panel can be made consistent by compensating the input grayscale of a frame of the picture through the initial Mura compensation parameters. When the display panel works for a long time and its Mura level changes, it is necessary to use the initial Mura compensation parameters and the Mura aging compensation parameters to jointly compensate the input grayscale of the area to be compensated, so as to determine the grayscale to be displayed corresponding to the area to be compensated, so as to improve the brightness consistency of the display panel. The Mura aging compensation parameters may be related to the change in the Mura level of the display panel after use. By introducing the Mura aging compensation parameters, so that under the same input grayscale, the brightness of the area to be compensated in the display area is close to or the same as the brightness of the non-Mura area, the Mura level of the display panel after long-term use can be reduced. The non-Mura area (i.e., the area with uniform display) does not need to be compensated using the initial Mura compensation parameters and the Mura aging compensation parameters.

[0081] S204 , displaying the image of the area to be compensated according to the grayscale to be displayed of the area to be compensated.

[0082] After the grayscale to be displayed in the area to be compensated is determined, the image of the area to be compensated is displayed according to the grayscale to be displayed, thereby ensuring the brightness consistency of the display panel.

[0083] The display control method provided in the embodiments of the present application determines the operating time of a target display panel and determines mura compensation parameters based on the operating time of the target display panel. The method then determines the grayscale to be displayed in the area to be compensated based on the input grayscale, initial mura compensation parameters, and mura compensation parameters of the area to be compensated. The method then displays the image in the area to be compensated based on the grayscale to be displayed. A dynamic mura compensation scheme is employed to provide different mura compensation parameters for different operating times of the display panel. This method maintains a good mura compensation effect even when the display panel ages and the mura level changes, thereby addressing the issue of mura appearing after long-term use of the display panel.

[0084] Based on the above embodiments, how to determine the Mura aging compensation parameters corresponding to different working hours of the target display panel is first introduced. The Mura aging compensation parameters corresponding to different working hours of the target display panel can be obtained in advance by conducting experiments on the test display panel.

[0085] Optionally, before determining the Mura aging compensation parameters according to the working time of the target display panel, the method further includes: statistically calculating the brightness corresponding to multiple grayscales in the reference area of ​​the test display panel at different working times; determining the Mura aging compensation parameters corresponding to the multiple grayscales at different working times based on the brightness corresponding to the multiple grayscales in the reference area of ​​the test display panel at different working times, thereby obtaining the correspondence between the grayscales corresponding to different working times and the Mura aging compensation parameters. Optionally, the display area of ​​the test display panel includes a Mura area and a non-Mura area. Optionally, the reference area is located in the non-Mura area of ​​the test display panel. The test display panel can be compensated by the initial Mura compensation parameters, thereby calculating the brightness corresponding to multiple grayscales in the reference area of ​​the test display panel at different working times. The Mura area of ​​the test display panel may be an area that needs to be compensated by the initial Mura compensation parameters.

[0086] As the display panel ages, its brightness changes. Therefore, the Mura aging compensation parameters under different working times can be determined by counting the brightness of a large number of test display panels at different working times. It should be noted that in actual applications, for the reference area of ​​the test display panel, multiple specific grayscales can be determined first, such as 16, 32, 64, 127, 192, 224, etc., and the brightness corresponding to these specific grayscales under different working times can be counted, and then the Mura aging compensation parameters corresponding to these specific grayscales under different working times can be determined. Finally, the Mura aging compensation parameters corresponding to other grayscales are fitted by the Mura aging compensation parameters corresponding to these specific grayscales, thereby obtaining the corresponding relationship between the grayscales and the Mura aging compensation parameters under different working times, so as to subsequently determine the Mura aging compensation parameters according to the working time of the target display panel actually used. The Mura aging compensation parameters corresponding to different grayscales may be different for the same working time. There can be one or more test display panels. If there are multiple test display panels, the final Mura aging compensation parameter can be obtained by taking the average value of the Mura aging compensation parameters of multiple test display panels at the same grayscale and the same working time. The target display panel actually used has the same or similar structure as the test display panel, with the difference being that the target display panel is compensated using the Mura aging compensation parameters, while the test display panel is not compensated using the Mura aging compensation parameters.

[0087] Optionally, the working time of the test display panel includes a working time reference point T0 and a working time reference point T0 located after the working time reference point T0. n ,

[0088] For each grayscale, the working time is T n Mura aging compensation parameters

[0089] Among them, γ is the relationship coefficient between grayscale and brightness, L n The working time is T n L0 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0, and L1 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0.

[0090] It is understandable that when determining the Mura aging compensation parameter corresponding to each specific grayscale of the reference area of ​​the test display panel, the method is the same or similar, and the following description is made for one grayscale.

[0091] The grayscale and brightness of the test display panel meet the following gamma curve formula:

[0092]

[0093]

[0094] Among them, G0 is the display grayscale of the reference area when the working time is T0, G n is the display grayscale of the reference area when the working time is T, L0 is the brightness of the reference area when the working time is T0, L n The working time is T n The brightness of the reference area, G is 255 grayscale, L is the brightness corresponding to 255 grayscale, γ is the relationship coefficient between grayscale and brightness, T0, T1, T2...T N It is the reference time point obtained by dividing the working time of the test display panel into a certain time period. T0 is between T1, T2...T N Before. T1, T2...T N The corresponding time increases successively. n Can be T1, T2...T N Optionally, the reference area can be the center point of the test display panel, so that the brightness of the compensated area of ​​the target display panel after compensation is close to the brightness of the center point of the target display panel. The reference area can be selected as needed and is not limited in this embodiment of the present application. γ can be 2.2.

[0095] Through the above two formulas, we can get:

[0096]

[0097]

[0098] That is to say, compared with the brightness L0 of the reference area at working time T0, the working time T n The brightness of the reference area L n Changes occur, working time T n Grayscale G n It is necessary to multiply the parameter based on the display grayscale G0 at working time T0 In order to keep the relationship between grayscale and brightness unchanged when brightness changes, this parameter Can be used as a Mura aging compensation parameter.

[0099] When determining the Mura aging compensation parameters corresponding to different working times by testing the display panel, referring to the above formula, determining the Mura aging compensation parameters corresponding to the multiple grayscales at different working times according to the brightness corresponding to the multiple grayscales of the reference area of ​​the test display panel at different working times includes: first obtaining the relationship coefficient γ between the grayscale and the brightness of the reference area of ​​the test display panel; then determining the Mura aging compensation parameters corresponding to the multiple grayscales at different working times according to the relationship coefficient γ between the grayscale and the brightness and the brightness corresponding to the multiple grayscales of the reference area of ​​the test display panel at different working times, and then determining the grayscale and Mura aging compensation parameters corresponding to the different working times. The corresponding relationship between them.

[0100] Optionally, statistics are collected in advance on the brightness of multiple grayscales of a large number of test display panels at different working times, and the Mura aging compensation parameters corresponding to different grayscales at different working times of each test display panel are determined according to the above formula 1. The data corresponding to a large number of test display panels are averaged to obtain the grayscale and Mura aging compensation parameters under different working hours. The corresponding relationship between the grayscale and Mura aging compensation parameters under different working hours The corresponding relationship between them is stored.

[0101] After determining the Mura aging compensation parameters corresponding to each grayscale at different operating times by testing the display panel, the corresponding relationship between the grayscale and the Mura aging compensation parameters is determined based on the operating time of the target display panel during operation. Furthermore, based on the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameters, the Mura aging compensation parameters corresponding to the input grayscale of the area to be compensated at the current operating time are determined.

[0102] Then, the grayscale to be displayed in the area to be compensated is determined based on the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter. The initial Mura compensation parameter includes a compensation gain coefficient and a compensation offset. The input grayscale of the area to be compensated is multiplied by the compensation gain coefficient, the resulting product is added to the compensation offset, and the resulting sum is multiplied by the Mura aging compensation parameter to obtain the grayscale to be displayed in the area to be compensated. Refer to the following formula:

[0103]

[0104] Among them, Y output To display the grayscale, X input is the input grayscale, Gain is the compensation gain coefficient, offset is the compensation offset, Mura aging compensation parameter.

[0105] It should be noted that when the working time of the target display panel is less than the preset time, the Mura aging compensation parameter is 1. For example, the preset time is T1, when the working time is less than T1, the Mura degree of the display panel does not change, and the Mura aging compensation parameter is 1, that is, the initial Mura compensation parameter is used for Mura compensation, that is:

[0106] Y output =(Gain*X input +offset)

[0107] Referring to FIG. 3, the initial Mura compensation parameter is stored in the Mura compensation data storage unit 301, including a compensation gain coefficient and a compensation offset, the working time of the target display panel is recorded in the statistical unit 302, the Mura aging compensation parameter corresponding to each gray scale under different working times is stored in the aging compensation data storage unit 303, and the compensation module 304 determines the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter, and outputs to the display module 305 for display. Figure 3

[0108] Optionally, when the working time of the target display panel is less than the preset time, the to-be-displayed gray scale of the to-be-compensated area is determined according to the input gray scale and the initial Mura compensation parameter. In the initial stage, the gray scale of the to-be-compensated area of the display panel is adjusted by using the initial Mura compensation parameter, so that the brightness of the display panel is consistent.

[0109] Optionally, when the working time of the target display panel is less than the preset time, the to-be-displayed gray scale of the to-be-compensated area is determined according to the input gray scale and the initial Mura compensation parameter. In the initial stage, the gray scale of the to-be-compensated area of the display panel is adjusted by using the initial Mura compensation parameter, so that the brightness of the display panel is consistent.

[0110] Optionally, when the working time of the target display panel is greater than or equal to the preset time, the to-be-displayed gray scale of the to-be-compensated area is determined according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter. When the working time of the display panel is relatively long, the Mura degree changes, and the input gray scale of the to-be-compensated area needs to be compensated by using the initial Mura compensation parameter and the Mura aging compensation parameter, so as to improve the brightness consistency of the display panel.

[0111] ​​​Optionally, the display area of ​​the target display panel includes a primary screen area and a secondary screen area. The transmittance of the secondary screen area is greater than or equal to the transmittance of the primary screen area. A photosensitive element may be provided on the non-display side of the secondary screen area. The photosensitive element may include a camera and a fingerprint recognition sensor.

[0112] The display control method provided in the embodiment of the present application can be applied to a display panel with an under-screen camera. For a display panel with an under-screen camera, the aging trends of the secondary screen area and the main screen area where the under-screen camera is located are inconsistent, and thus the aforementioned problem of the Mura phenomenon appearing after long-term use is prone to occur. Therefore, the secondary screen area where the under-screen camera is located can be used as the area to be compensated. The dynamic compensation method in the embodiment of the present application is used to compensate for Mura in the secondary screen display area where the under-screen camera is located, so as to improve the consistency of the main and secondary screens, thereby solving the problem of the Mura phenomenon appearing on the main and secondary screens after long-term use of the display panel.

[0113] Figure 4 This is a schematic diagram of the structure of a display control device provided in one embodiment of the present application. Figure 3 As shown, the display control device 400 includes:

[0114] A first determining module 401 is configured to determine a working time of a target display panel, wherein a display area of ​​the target display panel includes an area to be compensated;

[0115] A second determining module 402 is configured to determine a Mura aging compensation parameter according to the operating time of the target display panel;

[0116] A third determining module 403 is configured to determine a grayscale to be displayed in the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter;

[0117] The display driving module 404 is configured to display the image of the area to be compensated according to the grayscale to be displayed of the area to be compensated.

[0118] Optionally, the display area of ​​the target display panel also includes a non-Mura area.

[0119] In some implementations, the second determining module 402 is configured to:

[0120] Determine the correspondence between grayscale and Mura aging compensation parameters based on the operating time of the target display panel;

[0121] The Mura aging compensation parameter is determined according to the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameter.

[0122] In some embodiments, the third determining module 403 is configured to: when the working time of the target display panel is greater than or equal to the preset time, determine the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter, and the Mura aging compensation parameter.

[0123] The third determining module 403 is further configured to: when the working time of the target display panel is less than the preset time, determine the to-be-displayed gray scale of the to-be-compensated area according to the input gray scale of the to-be-compensated area and the initial Mura compensation parameter.

[0124] In some embodiments, the initial Mura compensation parameter includes a compensation gain coefficient and a compensation offset.

[0125] The third determining module 403 is configured to: multiply the input gray scale of the to-be-compensated area by the compensation gain coefficient, add the compensation offset to the product, and multiply the sum by the initial Mura compensation parameter to obtain the to-be-displayed gray scale of the to-be-compensated area.

[0126] In some embodiments, the display control apparatus 400 further includes a statistical module configured to:

[0127] The statistical module is configured to: test the display panel to obtain the luminance corresponding to each gray scale of the reference area of the display panel at different working times, and the display area of the test display panel includes a Mura area and a non-Mura area, and the reference area is located in the non-Mura area of the test display panel.

[0128] According to the luminance corresponding to each gray scale of the reference area of the test display panel at different working times, the Mura aging compensation parameter corresponding to each gray scale at different working times is determined, and a corresponding relationship between the gray scale corresponding to different working times and the Mura aging compensation parameter is obtained.

[0129] In some embodiments, the statistical module is configured to:

[0130] The statistical module is configured to: obtain a relationship coefficient between the gray scale and the luminance of the reference area of the test display panel.

[0131] According to the relationship coefficient and the luminance corresponding to each gray scale of the reference area of the test display panel at different working times, the Mura aging compensation parameter corresponding to each gray scale at different working times is determined, and a corresponding relationship between the gray scale corresponding to different working times and the Mura aging compensation parameter is obtained.

[0132] In some embodiments, the working time of the test display panel includes a working time reference point T0 and a working time reference point T n ,

[0133] For each gray scale, when the working time is T nMura aging compensation parameters

[0134] Among them, γ is the relationship coefficient between grayscale and brightness, L n The working time is T n L0 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0, and L1 is the brightness when the input grayscale of the reference area is this grayscale when the working time is T0.

[0135] In some embodiments, the display area of ​​the target display panel includes a main screen area and a subsidiary screen area, and the area to be compensated is located in the subsidiary screen area.

[0136] The display control device provided in the embodiment of the present application can be used to implement the display control method in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0137] Figure 5 This is a schematic diagram of the structure of a chip provided in one embodiment of the present application. Figure 5 As shown, the chip 500 includes a memory 501 and a processor 502 ; the memory 501 and the processor 502 may be connected via a bus 503 .

[0138] The memory 501 stores a computer program, which implements all the method steps in the above method embodiment when executed by the processor 502 .

[0139] Figure 6 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application. Figure 6 As shown, the electronic device 600 includes: a memory 601 and a processor 602 ; the memory 601 and the processor 602 may be connected via a bus 603 , and the electronic device 600 further includes a display panel 604 .

[0140] The memory 601 stores a computer program, which implements all the method steps in the above method embodiment when executed by the processor 502 .

[0141] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, all the method steps in the above method embodiment are implemented.

[0142] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes all the method steps in the above method embodiment.

[0143] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts among the embodiments can be mutually referred to.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. The modification or replacement does not change the essence of the corresponding technical solution from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display control method, characterized in that: The method comprises: determining a working time of a target display panel, wherein a display area of ​​the target display panel includes an area to be compensated; Determining a Mura aging compensation parameter according to the operating time of the target display panel; Determining a grayscale to be displayed in the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter; Displaying a picture of the area to be compensated according to the grayscale to be displayed of the area to be compensated; wherein determining the Mura aging compensation parameter according to the working time of the target display panel includes: Determining a correspondence between grayscale and Mura aging compensation parameters according to the operating time of the target display panel; Determining the Mura aging compensation parameter according to the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameter; The display area of ​​the target display panel also includes a non-Mura area; Before determining the Mura aging compensation parameter according to the working time of the target display panel, the method further includes: Statistically testing the brightness of a reference area of ​​a display panel under different operating times, wherein the display area of ​​the display panel includes a mura area and a non-mura area, and the reference area is located in the non-mura area of ​​the display panel; Determine the corresponding relationship between the grayscales corresponding to different working hours and the Mura aging compensation parameters based on the brightness corresponding to various grayscales of the reference area of ​​the test display panel at different working hours; The working time of the test display panel includes the working time reference point and at the working time reference point Later working time reference point , For each grayscale, the working time is Mura aging compensation parameters , in, is the relationship coefficient between grayscale and brightness, Working hours are When the input grayscale of the reference area is the brightness of this grayscale, Working hours are The brightness when the input grayscale of the reference area is this grayscale.

2. The method according to claim 1, characterized in that When the operating time of the target display panel is greater than or equal to a preset time, determining the grayscale to be displayed of the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter; The method further comprises: When the operating time of the target display panel is less than a preset time, the grayscale to be displayed of the area to be compensated is determined according to the input grayscale of the area to be compensated and the initial Mura compensation parameter.

3. The method according to any one of claims 1-2, characterized in that The initial mura compensation parameters include a compensation gain coefficient and a compensation offset; The step of determining the grayscale to be displayed of the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter includes: The input grayscale of the area to be compensated is multiplied by the compensation gain coefficient, the obtained product is added to the compensation offset, and the obtained sum is multiplied by the Mura aging compensation parameter to obtain the grayscale to be displayed in the area to be compensated.

4. The method according to claim 1, wherein The determining, based on the brightness corresponding to the multiple grayscales of the reference area of ​​the test display panel at different working times, the corresponding relationship between the grayscales corresponding to the different working times and the Mura aging compensation parameters includes: Obtaining a relationship coefficient between grayscale and brightness of a reference area of ​​a test display panel; The corresponding relationship between the grayscales corresponding to the different working times and the Mura aging compensation parameters is determined based on the relationship coefficient and the brightness corresponding to the various grayscales of the reference area of ​​the test display panel at different working times.

5. The method according to any one of claims 1-2, characterized in that The display area of ​​the target display panel includes a main screen area and a sub-screen area, and the area to be compensated is located in the sub-screen area.

6. The method according to claim 1, characterized in that When determining the Mura aging compensation parameters corresponding to each specific grayscale in the reference area of ​​the test display panel, the method is the same or similar. The following is for one grayscale: The grayscale and brightness of the test display panel meet the following gamma curve formula: ， ， in, Working hours are Display grayscale of the reference area, Working hours are The display grayscale of the reference area is Working hours are The brightness of the reference area, Working hours are The brightness of the reference area, Compared with working hours The brightness of the reference area , working hours The brightness of the reference area Changes in working hours Grayscale display Need to be during working hours Grayscale display Multiply the parameters based on , so that the relationship between grayscale and brightness remains unchanged when the brightness changes. As a Mura aging compensation parameter.

7. The method according to claim 1, characterized in that By introducing the Mura aging compensation parameter, the brightness of the to-be-compensated area in the display area is made close to or the same as the brightness of the non-Mura area under the same input grayscale.

8. The method according to claim 1, characterized in that The reference area is the center point of the test display panel, so that the brightness of the to-be-compensated area of ​​the compensated target display panel is close to the brightness of the center point of the target display panel.

9. The method according to claim 1, characterized in that is 2.

2.

10. A display control device, characterized in that: include: A first determining module is configured to determine an operating time of a target display panel, wherein a display area of ​​the target display panel includes an area to be compensated; A second determining module is configured to determine a Mura aging compensation parameter according to the operating time of the target display panel; a third determining module, configured to determine a grayscale to be displayed in the area to be compensated according to the input grayscale of the area to be compensated, the initial Mura compensation parameter, and the Mura aging compensation parameter; A display driving module, configured to display a picture of the area to be compensated according to the grayscale to be displayed of the area to be compensated; The second determining module is specifically configured to determine a correspondence between grayscale and Mura aging compensation parameters according to the operating time of the target display panel; Determining the Mura aging compensation parameter according to the input grayscale of the area to be compensated and the corresponding relationship between the grayscale and the Mura aging compensation parameter; the display area of ​​the target display panel also includes a non-Mura area; a statistics module, configured to calculate brightness corresponding to multiple grayscales in a reference area of ​​a test display panel at different operating times, wherein the display area of ​​the test display panel includes a mura area and a non-mura area, and the reference area is located in the non-mura area of ​​the test display panel; Determine the corresponding relationship between the grayscales corresponding to different operating times and the Mura aging compensation parameters based on the brightness corresponding to various grayscales of the reference area of ​​the test display panel at different operating times; The working time of the test display panel includes the working time reference point and at the working time reference point Later working time reference point , For each grayscale, the working time is Mura aging compensation parameters , in, is the relationship coefficient between grayscale and brightness, Working hours are When the input grayscale of the reference area is the brightness of this grayscale, Working hours are The brightness when the input grayscale of the reference area is this grayscale.

11. An electronic device, characterized in that: include: memory and processor; The memory stores a computer program, and when the computer program is executed by the processor, the method according to any one of claims 1 to 9 is implemented.

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