Display compensation method and display panel

Abstract

The present application discloses a display compensation method and a display panel. The display compensation method first configures a display area including a plurality of display partitions for displaying a mixed-color gray-scale pattern, and then compensates the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas in the display light-load picture, so that the display brightness of other display sub-areas can be compensated to the display brightness of the light-load picture, thereby alleviating charging mura. Then, by compensating the display brightness of other display partitions to the display brightness of the target display partition, the brightness of the entire display area can be compensated to be consistent, thereby alleviating non-charging mura, and further alleviating the technical problem of uneven brightness when displaying a heavy-load picture caused by charging and non-charging reasons.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display compensation method and a display panel. Background Art

[0002] In order to reduce the number of source (data) driver chips (Source ICs) in liquid crystal displays and thus reduce product costs, manufacturers will design panel pixels into different architectures. For example, Figure 1 The shown conventional architecture (1G1D), that is, scan lines G1 and G2 are respectively connected to a row of sub-pixels, data lines D1 - D6 are respectively connected to a corresponding column of sub-pixels, and each row of sub-pixels is arranged in a cycle in the order of red sub-pixels, green sub-pixels, and blue sub-pixels; Figure 2 The shown Tri-Gate architecture, that is, scan lines G1 - G6 are respectively connected to a row of sub-pixels, data lines D1 - D2 are respectively connected to a corresponding column of sub-pixels, each row of sub-pixels is of the same color, and is arranged in order with a cycle of three rows.

[0003] For a Tri-Gate pixel architecture panel, the number of its Source ICs is reduced by 2 / 3 compared to Figure 1 The shown conventional pixel architecture panel, but it also results in a reduction in the panel charging time. The liquid crystal display shows different gray levels by the rotation of liquid crystal molecules driven by different electric fields at different angles. The shortening of the charging time will lead to poor panel charging. The mura (brightness non-uniformity) caused by insufficient charging is called charging mura, and the mura caused by other reasons is called non-charging mura.

[0004] In order to eliminate mura, display manufacturers generally use Demura (brightness equalization) technology. The Demura technology mainly divides the display area of the liquid crystal display into different areas, and takes the brightness of the central area as a reference to make the brightness of the entire display area uniform. Such Demura technology can generally only eliminate mura in a pure gray-level picture. In a pure gray-level picture, all pixels display the same data, that is, the displayed picture is a light-load picture, so charging mura cannot be captured by a camera. If Demura is performed using a pure red or pure green or pure blue picture, over-compensation will occur in the white picture after pure red or pure green or pure blue compensation. Therefore, the existing Demura technology cannot compensate for charging mura and non-charging mura well at the same time. Summary of the Invention

[0005] The present application provides a display compensation method and a display panel to alleviate the technical problem of brightness non-uniformity caused by charging and non-charging reasons.

[0006] In a first aspect, the present application provides a display compensation method, which includes: configuring a display area to include a plurality of display partitions, each display partition being used to display a mixed-color grayscale pattern; compensating the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas in a display light-load screen; compensating the display brightness of other display partitions to the display brightness of a target display partition.

[0007] In some of these embodiments, the step of compensating the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas in a display light-load screen includes: configuring each display partition to include a first display sub-area and a plurality of second display sub-areas, the first display sub-area being used to display a light-load screen, and the second display sub-areas being used to display heavy-load screens; determining first brightness compensation data for each second display sub-area according to the brightness difference between the first display sub-area and each second display sub-area; and compensating the display brightness of the corresponding second display sub-areas with the first brightness compensation data.

[0008] In some of these embodiments, the step of determining first brightness compensation data for each second display sub-area according to the brightness difference between the first display sub-area and each second display sub-area includes: calculating the average brightness of the first display sub-area and each second display sub-area; and determining the first brightness compensation data for each second display sub-area according to the difference between the average brightness of the first display sub-area and the average brightness of each second display sub-area.

[0009] In some of these embodiments, the step of compensating the display brightness of other display partitions to the display brightness of a target display partition includes: determining, according to the product brightness requirement, one of the display partitions that best meets the product brightness requirement as the target display partition; determining second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions; and compensating the display brightness of the corresponding other display partitions with the second brightness compensation data.

[0010] In some of these embodiments, the step of determining second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions includes: calculating the average brightness of the target display partition and each of the other display partitions; and determining the second brightness compensation data for each of the other display partitions according to the difference between the average brightness of the target display partition and the average brightness of each of the other display partitions.

[0011] In some of these embodiments, the step of configuring a display area to include a plurality of display partitions, each display partition being used to display a mixed-color grayscale pattern includes: configuring each display partition to include a plurality of display sub-areas; and constructing the average gray levels of at least two of the plurality of display sub-areas to be different from each other.

[0012] In some of these embodiments, the step of configuring each display partition to include a plurality of display sub - partitions includes: configuring the plurality of display partitions to be arranged in an array; configuring the plurality of display sub - partitions in each display partition to be arranged in an array.

[0013] In some of these embodiments, the step of configuring the display area to include a plurality of display partitions, where each display partition is used to display a mixed - color grayscale pattern, further includes: constructing each display partition to have at least two sub - pixels with different colors.

[0014] In some of these embodiments, the step of configuring each display partition to include a first display sub - partition and a plurality of second display sub - partitions, where the first display sub - partition is used to display a light - load screen and the second display sub - partitions are used to display a heavy - load screen, includes: configuring the light - load screen as a screen in which the display grayscale of adjacent two rows of sub - pixels in the first display sub - partition is the same; configuring the heavy - load screen as a screen in which the display grayscale of adjacent two rows of sub - pixels in the second display sub - partitions is different.

[0015] In a second aspect, the present application provides a display panel. The display panel executes the display compensation method in at least one of the above - mentioned embodiments, and the display panel is a liquid - crystal display panel with a three - gate pixel architecture.

[0016] The display compensation method and display panel provided by the present application first configure the display area to include a plurality of display partitions for displaying mixed - color grayscale patterns, and then compensate the display brightness of other display sub - partitions in each display partition to the display brightness of the display sub - partition for displaying the light - load screen, so that the display brightness of other display sub - partitions can be compensated to the display brightness of the light - load screen, thereby alleviating charging - related mura; then compensate the display brightness of other display partitions to the display brightness of the target display partition, so that the brightness of the entire display area can be compensated to be uniform, thereby alleviating non - charging - related mura, and further alleviating the technical problem of uneven brightness when displaying the heavy - load screen caused by charging - related and non - charging - related reasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following, in conjunction with the drawings, through a detailed description of the specific embodiments of the present application, will make the technical solutions and other beneficial effects of the present application obvious.

[0018] Figure 1 It is a schematic structural diagram of a 1G1D pixel architecture in the related art.

[0019] Figure 2 It is a schematic structural diagram of a Tri - Gate pixel architecture in the related art.

[0020] Figure 3 It is a schematic flowchart of the display compensation method provided by the embodiments of the present application.

[0021] Figure 4It is a schematic structural diagram of a display panel provided by an embodiment of the present application.

[0022] Figure 5 It is a schematic structural diagram of a pure green screen before repair provided by an embodiment of the present application.

[0023] Figure 6 It is a schematic structural diagram of a pure green screen after repair provided by an embodiment of the present application. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0026] In view of the above-mentioned technical problems of brightness non-uniformity caused by charging and non-charging reasons, this embodiment provides a display compensation method. Please refer to Figures 3 to 6 , as Figure 3 shown, the display compensation method includes the following steps:

[0027] Step S10: Configure the display area to include a plurality of display partitions, and each display partition is used to display a mixed-color gray-scale pattern.

[0028] Step S20: Compensate the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas of the display light-load screen.

[0029] Step S30: Compensate the display brightness of other display partitions to the display brightness of the target display partition.

[0030] It can be understood that the display compensation method provided in this embodiment first configures the display area to include multiple display partitions for displaying mixed-color gray-scale patterns, and then compensates the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas in the display light-load screen, so that the display brightness of other display sub-areas can be compensated to the display brightness of the light-load screen, thereby alleviating charging mura; then compensating the display brightness of other display partitions to the display brightness of the target display partition can make the brightness of the entire display area consistent, thereby alleviating non-charging mura, and further alleviating the technical problem of uneven brightness when displaying a heavy-load screen caused by charging and non-charging reasons.

[0031] It should be noted that the display area is Figure 4 the area shown by the largest black frame in the drawing, and the display partition is a small black frame in the largest black frame, and these display partitions are arranged in an array.

[0032] Among them, the specific structure of each display partition is as Figure 4 shown in the right figure in, and each display partition may include multiple display sub-areas. For example, display sub-areas such as a, b, c, d, etc., and the display sub-areas located in the same display partition are arranged in an array.

[0033] Among them, the light-load screen is a screen in which the display gray levels of adjacent two rows of sub-pixels in the first display sub-area are the same. For example, as Figure 4 shown in the right figure in, taking the repair of 60 gray-level charging mura as an example, the gray-level value of the (N-1)th row of sub-pixels in the display sub-area a is equal to the display gray level of the Nth row of sub-pixels, and both are equal to 60. Therefore, there is no charging mura in the display sub-area a.

[0034] Among them, since the mixed-color gray-scale pattern contains different gray-scale combinations, it can expose different degrees of charging mura, and then convert the charging mura into non-charging mura that can be detected in the pure gray-scale pattern, thereby achieving the complete elimination of both charging mura and non-charging mura.

[0035] In one of the embodiments, the step of compensating the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-areas in the display light-load screen includes: configuring each display partition to include a first display sub-area and multiple second display sub-areas, the first display sub-area is used to display the light-load screen, and the second display sub-areas are used to display the heavy-load screen; determining the first brightness compensation data of each second display sub-area according to the brightness difference between the first display sub-area and each second display sub-area; compensating the display brightness of the corresponding second display sub-areas with the first brightness compensation data.

[0036] It should be noted that the heavy-load screen is a screen in which the display gray levels of adjacent two rows of sub-pixels in the second display sub-area are different. For example, asFigure 4 As shown, the gray scale values of the sub-pixels in the N-1th row of the display sub-regions b / c / d are not equal to those of the sub-pixels in the Nth row, where the gray scale values of the sub-pixels in the Nth row of the display sub-regions b / c / d are all equal to 60, but the gray scale values of the sub-pixels in the N-1th row are 8, 192, and 255 gray scales respectively.

[0037] In one embodiment, the step of determining the first brightness compensation data for each second display sub-region according to the brightness difference between the first display sub-region and each second display sub-region includes: calculating the average brightness of the first display sub-region and each second display sub-region; determining the first brightness compensation data for each second display sub-region according to the difference between the average brightness of the first display sub-region and the average brightness of each second display sub-region.

[0038] It should be noted that, as Figure 4 shown, the first display sub-region can be the display sub-region a, and each second display sub-region can be the display sub-regions b / c / d.

[0039] In one embodiment, the step of compensating the display brightness of other display partitions to the display brightness of the target display partition includes: determining, according to the product brightness requirement, one of the display partitions that best meets the product brightness requirement as the target display partition; determining the second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions; compensating the display brightness of the corresponding other display partitions with the second brightness compensation data.

[0040] It should be noted that the product brightness requirement can be a known brightness value in advance.

[0041] In one embodiment, the step of determining the second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions includes: calculating the average brightness of the target display partition and each of the other display partitions; determining the second brightness compensation data for each of the other display partitions according to the difference between the average brightness of the target display partition and the average brightness of each of the other display partitions.

[0042] It should be noted that before this embodiment, the above display compensation method can compensate for different degrees of charging mura to the same brightness as the light load screen. However, if there is non-charging mura in display sub-region a at this time, it will cause non-charging mura to appear in other display sub-regions b / c / d as well. Through step S20, this mura can be displayed in the grayscale screen, which means that this mura can also be observed in the pure grayscale screen. At this time, select the display partition with the brightness that best meets the product brightness and chromaticity requirements in the entire panel as the brightness target value of the entire display panel, and compensate the display brightness of all display partitions of the display panel to the display brightness of the target display partition, then all mura of the display panel can be eliminated.

[0043] In one embodiment, the step of configuring the display area to include multiple display partitions, where each display partition is used to display a mixed-color grayscale pattern, includes: configuring each display partition to include multiple display sub-regions; constructing at least two display sub-regions among the multiple display sub-regions to have different average grayscale levels.

[0044] It should be noted that in this embodiment, constructing at least two display sub-regions in the same display partition to have different average grayscale levels can achieve the corresponding mixed-color grayscale pattern. Alternatively, the corresponding mixed-color grayscale pattern can also be achieved by constructing at least two display sub-regions in the same display partition to have different grayscale levels.

[0045] In one embodiment, the step of configuring the display area to include multiple display partitions, where each display partition is used to display a mixed-color grayscale pattern, further includes: constructing each display partition to have at least two sub-pixels with different colors.

[0046] It should be noted that the same display partition can include at least two of red sub-pixels, green sub-pixels, and blue sub-pixels. Alternatively, the same display sub-region can also include at least two of red sub-pixels, green sub-pixels, and blue sub-pixels.

[0047] Figure 5 This is a schematic structural diagram of the pure green screen before repair provided by the embodiment of the present application. Through Figure 5 It can be seen that in the initial state of the liquid crystal display panel with a tri-gate pixel architecture, except that the bottom area is brighter indicating better charging, other areas are darker indicating that most areas of the display panel have serious charging deficiencies and there are many non-charging mura.

[0048] Figure 6 This is a schematic structural diagram of the pure green screen after repair provided by the embodiment of the present application. Through Figure 6It can be seen that the entire display area has high brightness and good uniformity. Therefore, after using the display compensation method of this patent to repair the display panel, the charging mura and non-charging mura of the panel can be better repaired, greatly improving the product image quality.

[0049] In summary, the combination of steps S20 and S30 can solve the problem that traditional Demura cannot eliminate charging mura, improve the brightness uniformity of liquid crystal display panels with short charging times when displaying heavy-load pictures, reduce costs, and at the same time improve the image quality.

[0050] In one of the embodiments, this embodiment provides a display panel that executes the display compensation method in at least one of the above embodiments. The display panel is a liquid crystal display panel with a three-gate pixel architecture.

[0051] It can be understood that the display panel provided in this embodiment executes the display compensation method in at least one of the above embodiments. It can also first configure the display area to include multiple display partitions for displaying mixed-color gray-scale patterns, and then compensate the display brightness of other display sub-areas in each display partition to the display brightness of the display sub-area for displaying light-load pictures, so as to compensate the display brightness of other display sub-areas to the display brightness of the light-load pictures, thereby alleviating the charging mura; then compensate the display brightness of other display partitions to the display brightness of the target display partition, so as to compensate the brightness of the entire display area to be consistent, thereby alleviating the non-charging mura, and further alleviating the technical problem of uneven brightness when displaying heavy-load pictures caused by charging and non-charging reasons.

[0052] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] The display compensation method and display panel provided by the embodiments of this application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the technical solution and its core idea of this application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display compensation method, characterized in that, The display compensation method includes: Configuring the display area to include a plurality of display partitions, each of the display partitions being used to display a mixed-color gray-scale pattern; Compensating the display brightness of other display sub-areas in each of the display partitions to the display brightness of the display sub-areas in the display light-load picture; Compensating the display brightness of other display partitions to the display brightness of the target display partition; wherein, the step of compensating the display brightness of other display sub-areas in each of the display partitions to the display brightness of the display sub-areas in the display light-load picture includes: Configuring each of the display partitions to include a first display sub-area and a plurality of second display sub-areas, the first display sub-area being used to display a light-load picture, and the second display sub-areas being used to display a heavy-load picture; Determining first brightness compensation data for each of the second display sub-areas according to the brightness difference between the first display sub-area and each of the second display sub-areas; Compensating the display brightness of the corresponding second display sub-areas with the first brightness compensation data.

2. The display compensation method according to claim 1, wherein The step of determining first brightness compensation data for each of the second display sub-areas according to the brightness difference between the first display sub-area and each of the second display sub-areas includes: Calculating the average brightness of the first display sub-area and each of the second display sub-areas; Determining first brightness compensation data for each of the second display sub-areas according to the difference between the average brightness of the first display sub-area and the average brightness of each of the second display sub-areas.

3. The display compensation method according to claim 2, wherein The step of compensating the display brightness of other display partitions to the display brightness of the target display partition includes: Determining, according to the product brightness requirement, one of the display partitions that most meets the product brightness requirement as the target display partition; Determining second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions; Compensating the display brightness of the corresponding other display partitions with the second brightness compensation data.

4. The display compensation method according to claim 3, characterized in that, The step of determining second brightness compensation data for each of the other display partitions according to the brightness difference between the target display partition and each of the other display partitions includes: Calculating the average brightness of the target display partition and each of the other display partitions; Determining second brightness compensation data for each of the other display partitions according to the difference between the average brightness of the target display partition and the average brightness of each of the other display partitions.

5. The display compensation method according to claim 1, characterized in that The step of configuring the display area to include a plurality of display partitions, each of the display partitions being used to display a mixed-color gray-scale pattern includes: Configuring each of the display partitions to include a plurality of display sub-areas; Constructing the average gray scales of at least two of the plurality of display sub-areas to be different from each other.

6. The display compensation method according to claim 5, wherein The step of configuring each of the display partitions to include a plurality of display sub-areas includes: Configuring the plurality of display partitions to be arranged in an array; Configuring the plurality of display sub-areas in each of the display partitions to be arranged in an array.

7. The display compensation method according to claim 5, wherein The step of configuring the display area to include a plurality of display partitions, each of the display partitions being used to display a mixed-color gray-scale pattern further includes: Constructing each of the display partitions to have at least two sub-pixels with different colors.

8. The display compensation method according to claim 1, characterized in that, The step of configuring each of the display partitions to include a first display sub-region and a plurality of second display sub-regions, where the first display sub-region is used to display a light load screen and the second display sub-region is used to display a heavy load screen, includes: Configuring the light load screen as a screen in which the display gray levels of adjacent two rows of sub-pixels in the first display sub-region are the same; Configuring the heavy load screen as a screen in which the display gray levels of adjacent two rows of sub-pixels in the second display sub-region are different.

9. A display panel, characterized in that, The display panel executes the display compensation method according to any one of claims 1-8, and the display panel is a liquid crystal display panel with a three-gate pixel structure.

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