Processing method and device and display panel

Abstract

The invention provides a processing method and device and a display panel. The method comprises the following steps: acquiring a first pixel lightening number and a first gray-scale value of a first image; according to the first pixel lightening number, the first gray-scale value and a first corresponding relation, a first jitter graph is determined, the first jitter graph comprises a plurality of second jitter graphs arranged periodically, and the first corresponding relation is the corresponding relation of the pixel lightening number, the gray-scale value and the jitter graph; and adjusting gray-scale values of at least part of pixels in the first image according to the first jitter graph to obtain a second image. By means of the method, when the display panel is in the low-gray-scale state, transverse or vertical stripes generated when the display panel displays can be eliminated, meanwhile, the granular sensation of display is relieved, and therefore the visual experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a processing method, a device and a display panel. Background Art

[0002] With the continuous development of display technology, users' requirements for display panel products are also increasing; users' expectations for display panel products are not limited to the expansion of screen size, but also include the improvement of image display quality. In this context, whether or not a display panel product has image quality enhancement function has become one of the important indicators to measure the quality of display panel products.

[0003] However, when the display panel is in a low grayscale state, applying the image quality enhancement function may cause display abnormalities; this is because the low grayscale state means that the number of illuminated pixels is significantly reduced, and this reduction may cause uneven image distribution on the display panel. In this case, applying the image quality enhancement function may make the display panel prone to vertical or horizontal fine lines, thereby seriously affecting the user's visual experience. Summary of the invention

[0004] The present application provides a processing method, a device and a display panel, which can eliminate horizontal or vertical stripes when the display panel is in a low grayscale state, and reduce the granularity of the display, thereby improving the user's visual experience.

[0005] In a first aspect, a processing method is provided, which is applied to a driver chip, and the method includes: obtaining the number of first pixel light-up and a first grayscale value of a first image; determining a first jitter diagram according to the first number of pixel light-up, the first grayscale value and a first corresponding relationship, wherein the first jitter diagram includes a plurality of periodically arranged second jitter diagrams, and the first corresponding relationship is a corresponding relationship between the number of pixel light-up, the grayscale value and the jitter diagram; adjusting the grayscale value of at least part of the pixels in the first image according to the first jitter diagram to obtain a second image.

[0006] In the embodiment of the present application, the driver chip can select a regularly arranged first jitter pattern to perform jitter processing on the first image based on the number of first pixel lighting, the first grayscale value and the first corresponding relationship. In this way, when the display panel displays the second image after jitter processing, it can eliminate horizontal or vertical stripes and reduce the graininess of the display, thereby improving the user's visual experience.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the first jitter image includes multiple pixels distributed in M ​​rows and N columns, the multiple pixels include a first pixel, the first pixel includes a sub-pixel whose grayscale value is not 0, and M and N are positive integers.

[0008] In a possible implementation manner, the multiple pixels may further include a second pixel, and the grayscale values ​​of sub-pixels of the second pixel are all 0.

[0009] In an embodiment of the present application, the first jitter map includes a first pixel, and the first pixel includes a sub-pixel whose grayscale value is not 0. In this way, through the reasonable distribution of the first pixel, the first jitter map can exhibit a visual effect close to continuous grayscale, thereby exhibiting a high-quality image effect under limited grayscale values.

[0010] In combination with the first aspect, in certain implementations of the first aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the third sub-pixel in the third row and fourth column, and the second sub-pixel in the fourth row and second column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0011] In a possible implementation, when the first grayscale value is greater than 0 and less than or equal to 5, and the number of first pixel light-up pixels is less than or equal to 3 pixels, the first jitter pattern may include the above-mentioned multiple periodically arranged second jitter patterns.

[0012] In a possible implementation, the first sub-pixel may be a red sub-pixel, the second sub-pixel may be a blue sub-pixel, and the third sub-pixel may be a green sub-pixel.

[0013] At present, when the driver chip performs jitter processing on the first image, it is necessary to use an irregularly arranged jitter graph, which aggravates the generation of horizontal and vertical stripes in the display panel and causes the display screen to present a heavier sense of graininess. In an embodiment of the present application, the first jitter graph includes a plurality of regularly arranged second jitter graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the plurality of second jitter graphs are the same. In this way, when the display panel displays the second image after jitter processing, it can eliminate horizontal or vertical stripes and reduce the sense of graininess of the display, thereby improving the user's visual experience. In addition, this first jitter graph is particularly suitable for processing a first image with a small number of lit pixels and extremely low grayscale values.

[0014] In combination with the first aspect, in certain implementations of the first aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; among the P pixels, the third sub-pixel in the first row and first column, the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the second sub-pixel in the third row and second column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel and the third sub-pixel in the fourth row and fourth column have a grayscale value of a first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0015] In a possible implementation, when the first grayscale value is greater than 5 and less than or equal to 8, and the number of first pixel lightened pixels is greater than 3 and less than or equal to 12 pixels, the first jitter pattern may include the above-mentioned multiple periodically arranged second jitter patterns.

[0016] In the embodiment of the present application, the first jitter graph includes a plurality of regularly arranged second jitter graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the plurality of second jitter graphs are the same. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image after jitter processing, while reducing the graininess of the display, thereby improving the user's visual experience. In addition, this first jitter graph is particularly suitable for processing a first image with a large number of lit pixels and a moderate grayscale value.

[0017] In combination with the first aspect, in some implementations of the first aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the second sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0; the first sub-pixels and the third sub-pixels in the first row and second column, the first row and fourth column, the second row and third column, the third row and second column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining sub-pixels are 0.

[0018] In a possible implementation, when the first grayscale value is greater than 9 and less than or equal to 12, and the number of first pixel lightened pixels is greater than 13 and less than or equal to 32 pixels, the first jitter pattern may include the above-mentioned multiple periodically arranged second jitter patterns.

[0019] In the embodiment of the present application, the first jitter graph includes a plurality of regularly arranged second jitter graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the plurality of second jitter graphs are the same. In this way, the second image obtained by processing the first jitter graph can eliminate the horizontal or vertical stripes in the display panel and reduce the granularity of the display, thereby improving the user's visual experience. In addition, this first jitter graph is particularly suitable for processing a first image with a large number of lit pixels and a high grayscale value.

[0020] In combination with the first aspect, in some implementations of the first aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel in the fourth row and second column, and the first sub-pixel in the fourth row and fourth column among the P pixels are first values, and the first value is greater than 0; the grayscale values ​​of the third sub-pixel in the first row and first column, the second sub-pixel in the third row and second column, and the third sub-pixel in the fourth row and second column among the P pixels are second values, and the second value is greater than the first value; the grayscale values ​​of the remaining sub-pixels are 0.

[0021] In the embodiment of the present application, the sub-pixels of the first pixel in the first jitter image are represented by three different grayscale values ​​(e.g., 0, the first value, and the second value), which effectively improves the brightness performance of the image. This design can ensure that the overall brightness difference between the first image and the second image before and after the jitter processing is maintained at a low level, which helps the image achieve a smoother grayscale transition.

[0022] In a second aspect, a processing device is provided, including an acquisition unit and a processing unit, wherein the acquisition unit is used to acquire the first number of illuminated pixels and a first grayscale value of a first image; the processing unit is used to: determine a first jitter map based on the first number of illuminated pixels, the first grayscale value and a first corresponding relationship, the first jitter map including a plurality of periodically arranged second jitter maps, and the first corresponding relationship being a corresponding relationship between the number of illuminated pixels, the grayscale value and the jitter map; and adjust the grayscale values ​​of at least some pixels in the first image according to the first jitter map to obtain a second image.

[0023] In combination with the second aspect, in certain implementations of the second aspect, the first jitter image includes multiple pixels distributed in M ​​rows and N columns, the multiple pixels include a first pixel, the first pixel includes a sub-pixel whose grayscale value is not 0, and M and N are positive integers.

[0024] In combination with the second aspect, in certain implementations of the second aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the third sub-pixel in the third row and fourth column, and the second sub-pixel in the fourth row and second column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0025] In combination with the second aspect, in certain implementations of the second aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; among the P pixels, the third sub-pixel in the first row and first column, the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the second sub-pixel in the third row and second column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel and the third sub-pixel in the fourth row and fourth column have a grayscale value of a first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0026] In combination with the second aspect, in some implementations of the second aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the second sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0; the first sub-pixels and the third sub-pixels in the first row and second column, the first row and fourth column, the second row and third column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining sub-pixels are 0.

[0027] In combination with the second aspect, in some implementations of the second aspect, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel in the fourth row and second column, and the first sub-pixel in the fourth row and fourth column among the P pixels are first values, and the first value is greater than 0; the grayscale values ​​of the third sub-pixel in the first row and first column, the second sub-pixel in the third row and second column, and the third sub-pixel in the fourth row and second column among the P pixels are second values, and the second value is greater than the first value; the grayscale values ​​of the remaining sub-pixels are 0.

[0028] In a third aspect, a processing device is provided, comprising: at least one processor and a memory, wherein the at least one processor is coupled to the memory and is used to read and execute instructions in the memory, so that the device implements the method in any one of the implementation modes of the above-mentioned first aspect.

[0029] According to a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program code, and when the computer program code is executed on a computer, the computer executes the method in any one of the implementations of the first aspect.

[0030] In a fifth aspect, a chip is provided, the chip comprising a circuit, the circuit being used to execute the method in any one of the implementations of the first aspect above.

[0031] According to a sixth aspect, a computer program product is provided. The computer product includes a computer program. When the computer program is executed by a processor, the method in any one of the implementations of the first aspect is executed.

[0032] In a seventh aspect, a display panel is provided, comprising: a processing device in any one of the implementations of the second aspect or the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a pixel block provided in an embodiment of the present application;

[0034] Figure 2 is a schematic diagram of a jitter graph provided in an embodiment of the present application;

[0035] Figure 3 is a schematic flow chart of the processing method provided in the embodiment of the present application;

[0036] Figure 4 is a schematic diagram of a first jitter graph provided in an embodiment of the present application;

[0037] Figure 5 is a schematic diagram of another first jitter graph provided in an embodiment of the present application;

[0038] Figure 6 is a schematic diagram of another first jitter graph provided in an embodiment of the present application;

[0039] Figure 7 is a schematic diagram of another first jitter graph provided in an embodiment of the present application;

[0040] Figure 8 This is a comparison diagram of the display effects of the existing solution and the optimized solution when the grayscale value is 3 provided in an embodiment of the present application;

[0041] Fig. 9 This is a comparison diagram of the display effects of the existing solution and the optimized solution when the grayscale value is 5 provided in an embodiment of the present application;

[0042] Fig.10 This is a comparison diagram of the display effects of the existing solution and the optimized solution when the grayscale value is 8 provided in an embodiment of the present application;

[0043] Fig.11 It is a schematic diagram showing the change of brightness curves with grayscale values ​​of an existing solution and an optimized solution provided in an embodiment of the present application;

[0044] Fig.12 is a schematic diagram of a processing device provided in an embodiment of the present application;

[0045] Fig.13 It is a schematic diagram of another processing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0047] The prefixes such as "first" and "second" used in the embodiments of the present application are only used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers used to distinguish description objects in the embodiments of the present application does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and the use of such prefixes should not constitute an unnecessary limitation.

[0048] In order to better understand the present application, the terms involved in the present application are first explained and illustrated.

[0049] (1) Dithering technology: In digital image processing, dithering technology is used to solve the problem of displaying low-bit-depth images on high-bit-depth devices. By applying spatial dithering in pixel blocks, the missing pixel values ​​can be displayed. For example, assuming that the brightness of each pixel in a 2×2 pixel block is 1 nit, it can be expressed as Figure 1 The pixel block shown has an average brightness of 4 nits. Figure 2 Adjust in any of the ways shown Figure 1 For example, Figure 1 The pixel block is adjusted to Figure 2 The brightness mode of the pixel block shown in the first row and first column of .

[0050] (2) LQE: Due to the difficulty in controlling low-brightness grayscale voltage and the influence of factors such as the efficiency of light-emitting devices, the brightness and color uniformity of low-grayscale images are poor. The LQE algorithm uses high-grayscale voltage for spatial dithering to represent the low-grayscale display effect, thereby improving low-grayscale color deviation and stripe mura. Currently, the size of the dithered pixel block used by the LQE algorithm is 8×4, and the arrangement of the dithering graph can be any arrangement.

[0051] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0052] As described in the background technology, when the display panel is in a low grayscale state, applying the image quality enhancement function may cause display abnormalities; this is because the low grayscale state means that the number of illuminated pixels is significantly reduced, and this reduction may cause uneven image distribution on the display panel. In this case, applying the image quality enhancement function may make the display panel prone to vertical or horizontal fine lines, thereby seriously affecting the user's visual experience.

[0053] The embodiments of the present application provide a processing method, a device and a display panel, which can eliminate horizontal or vertical stripes in a display panel when the display panel is in a low grayscale state, and at the same time reduce the granularity of the display, thereby improving the user's visual experience.

[0054] Figure 3 It is a schematic flow chart of the processing method provided in an embodiment of the present application. The method 300 can be applied to a driver chip. The method 300 can include steps S301 to S303.

[0055] S301, obtaining a first pixel lighting quantity and a first grayscale value of a first image.

[0056] Optionally, the first image may come from an external device (eg, a camera, a computer, or a media player), and the first image may be transmitted to the driving chip through an interface in the form of a digital signal.

[0057] Optionally, the driving chip may scan pixels of the first image one by one, so as to obtain the first number of lit pixels and the first grayscale value of the first image.

[0058] S302: Determine a first jitter diagram according to the first number of lit pixels, the first grayscale value, and the first corresponding relationship.

[0059] The first jitter pattern includes a plurality of periodically arranged second jitter patterns, and the first corresponding relationship is a corresponding relationship between the number of lit pixels, the grayscale value and the jitter pattern.

[0060] S303: Adjust the grayscale values ​​of at least some pixels in the first image according to the first jitter image to obtain a second image.

[0061] The second image may be understood as an image that has been subjected to dithering processing.

[0062] Optionally, after obtaining the second image, the driving chip may control the display panel to display the second image.

[0063] In the embodiment of the present application, the driver chip can select a regularly arranged first jitter pattern to perform jitter processing on the first image based on the number of first pixel lighting, the first grayscale value and the first corresponding relationship. In this way, when the display panel displays the second image after jitter processing, it can eliminate horizontal or vertical stripes and reduce the graininess of the display, thereby improving the user's visual experience.

[0064] According to some embodiments, the first jitter image includes a plurality of pixels distributed in M ​​rows and N columns, the plurality of pixels include a first pixel, the first pixel includes a sub-pixel whose grayscale value is not 0, and M and N are positive integers. In this way, through the reasonable distribution of the first pixel, the first jitter image can show a visual effect close to continuous grayscale, thereby showing a high-quality image effect in the case of limited grayscale values.

[0065] Optionally, the multiple pixels further include a second pixel, and the grayscale values ​​of sub-pixels of the second pixel are all 0.

[0066] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the third sub-pixel in the third row and fourth column, and the second sub-pixel in the fourth row and second column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0067] At present, when the driver chip performs dithering processing on the first image, it is necessary to use an irregularly arranged dithering graph, which aggravates the generation of horizontal and vertical stripes in the display panel and causes the displayed image to present a heavier sense of graininess. Based on the above processing method, the first dithering graph includes multiple regularly arranged second dithering graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the multiple second dithering graphs are the same. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image after dithering processing, while reducing the sense of graininess of the display, thereby improving the user's visual experience. In addition, this first dithering graph is particularly suitable for processing a first image with a small number of lit pixels and extremely low grayscale values.

[0068] Optionally, in the present application, the first sub-pixel may be a red sub-pixel, the second sub-pixel may be a blue sub-pixel, and the third sub-pixel may be a green sub-pixel.

[0069] It should be noted that the above-mentioned remaining sub-pixels may refer to: sub-pixels other than the first sub-pixel in the first row and third column, sub-pixels other than the third sub-pixel in the third row and fourth column, and sub-pixels other than the second sub-pixel in the fourth row and second column. The remaining sub-pixels described later may also refer to this interpretation method.

[0070] Optionally, in this implementation, the first value may be greater than or equal to 1 and less than or equal to 5.

[0071] For example, Figure 4As shown, the first jitter pattern includes 2 periodically arranged second jitter patterns (with 4 columns as one period), each second jitter pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second jitter pattern, the pixels in the third column of the first row, the fourth column of the third row, and the second column of the fourth row are first pixels, and the remaining pixels are second pixels.

[0072] Among them, the grayscale values ​​of the red sub-pixel in the first row and third column, the blue sub-pixel in the third row and fourth column, and the green sub-pixel in the fourth row and second column are represented by 1 (for example, 1 represents a grayscale value of 1 to 5), and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0073] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; among the P pixels, the grayscale value of the third sub-pixel in the first row and first column, the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the second sub-pixel in the third row and second column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel and the third sub-pixel in the fourth row and fourth column are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0074] Based on the above processing method, the first jitter graph includes a plurality of regularly arranged second jitter graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the plurality of second jitter graphs are the same. In this way, the display panel can eliminate horizontal or vertical stripes when displaying the second image after jitter processing, while reducing the granularity of the display, thereby improving the user's visual experience. In addition, this first jitter graph is particularly suitable for processing a first image with a large number of lit pixels and a moderate grayscale value.

[0075] Optionally, in this implementation, the first value may be greater than or equal to 6 and less than or equal to 8.

[0076] For example, Figure 5 As shown, the first jitter pattern includes 2 periodically arranged second jitter patterns (with 4 columns as one period), each second jitter pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second jitter pattern, the pixels in the first row and the first column, the first row and the third column, the first row and the fourth column, the second row and the fourth column, the third row and the first column, the third row and the second column, the third row and the third column, the fourth row and the first column, the fourth row and the second column are first pixels, and the remaining pixels are second pixels.

[0077] Among them, the grayscale values ​​of the blue subpixel in the first row and first column, the red subpixel in the first row and third column, the green subpixel in the first row and fourth column, the green subpixel in the second row and third column, the blue subpixel in the second row and fourth column, the red subpixel in the third row and first column, the green subpixel in the third row and second column, the blue subpixel in the third row and third column, the green subpixel in the fourth row and first column, the red subpixel and blue subpixel in the fourth row and second column, and the red subpixel in the fourth row and fourth column are represented by 1 (for example, 1 represents a grayscale value of 6 to 8), and the grayscale values ​​of the remaining subpixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0078] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the second sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, and the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0; the first sub-pixels and the third sub-pixels in the first row and second column, the first row and fourth column, the second row and third column, the third row and second column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining sub-pixels are 0.

[0079] Based on the above processing method, the first jitter graph includes a plurality of regularly arranged second jitter graphs, and the grayscale values ​​of the sub-pixels of the corresponding first pixels in the plurality of second jitter graphs are the same. In this way, the second image obtained by processing the first jitter graph can eliminate the horizontal or vertical stripes in the display panel, while reducing the granularity of the display, thereby improving the user's visual experience. In addition, this first jitter graph is particularly suitable for processing a first image with a large number of lit pixels and a high grayscale value.

[0080] Optionally, in this implementation, the first value may be greater than or equal to 9 and less than or equal to 12.

[0081] For example, Figure 6 As shown, the first jitter pattern includes two periodically arranged second jitter patterns (with four columns as one period), each second jitter pattern includes 16 pixels, each pixel includes a red sub-pixel, a blue sub-pixel and a green sub-pixel. In each second jitter pattern, all pixels are first pixels.

[0082] Among them, the grayscale values ​​of the green sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, are represented by 1 (for example, 1 represents a grayscale value of 9 to 12); the grayscale values ​​of the red sub-pixels and blue sub-pixels in the first row and second column, the first row and fourth column, the second row and first column, the second row and third column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column are represented by 1 (for example, 1 represents a grayscale value of 9 to 12), and the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0083] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel in the fourth row and second column, and the first sub-pixel in the fourth row and fourth column among the P pixels are first values, and the first value is greater than 0; the grayscale values ​​of the third sub-pixel in the first row and first column, the second sub-pixel in the third row and second column, and the third sub-pixel in the fourth row and second column among the P pixels are second values, and the second value is greater than the first value; the grayscale values ​​of the remaining sub-pixels are 0.

[0084] Based on the above processing method, the sub-pixels of the first pixel in the first jitter image are represented by three different grayscale values ​​(for example, 0, the first value, and the second value), which effectively improves the brightness performance of the image. This design can ensure that the overall brightness difference between the first image and the second image before and after the jitter processing is maintained at a low level, which helps to achieve a smoother grayscale transition.

[0085] For example, Figure 7 As shown, the first jitter pattern includes 2 periodically arranged second jitter patterns (with 4 columns as one period), each second jitter pattern includes 16 pixels, and each pixel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. In each second jitter pattern, the pixels in the first row and the second column, the second row and the first column, the second row and the second column, the third row and the fourth column, and the fourth row and the third column are second pixels, and the remaining pixels are first pixels.

[0086] Among them, the grayscale values ​​of the red sub-pixel in the first row and third column, the green sub-pixel in the first row and fourth column, the green sub-pixel in the second row and third column, the blue sub-pixel in the second row and fourth column, the red sub-pixel in the third row and first column, the blue sub-pixel in the third row and third column, the green sub-pixel in the fourth row and first column, and the red sub-pixel in the fourth row and fourth column are represented by 1 (for example, 1 represents a grayscale value of 6); the grayscale values ​​of the blue sub-pixel in the first row and first column, the green sub-pixel in the third row and second column, and the blue sub-pixel in the fourth row and second column are represented by 2 (for example, 2 represents a grayscale value of 8); the grayscale values ​​of the remaining sub-pixels are represented by 0 (for example, 0 represents a grayscale value of 0).

[0087] According to some embodiments, in step S302, the first corresponding relationship may be pre-set and stored in the driver chip. For example, the first corresponding relationship may be as shown in Table 1.

[0088] Table 1

[0089] Number of pixels lit Grayscale value of the image Jitter Chart 1 to 3 1 to 5 Figure 4 4 to 12 6 to 8 Figure 5 or Figure 7 13 to 32 9 to 12 Figure 6

[0090] It should be noted that the number of lit pixels can be calculated by dividing the number of lit sub-pixels by 3, for example, Figure 4 The number of sub-pixels lit in is 6, and the number of pixels lit is 2. For another example, Figure 5 The number of sub-pixels lit in is 24, and the number of pixels lit is 8. For another example, Figure 6 The number of lit sub-pixels is 48 and the number of lit pixels is 16.

[0091] It should also be noted that the conversion between the grayscale value of a pixel and the grayscale value of a sub-pixel can refer to formula (1-1):

[0092]

[0093] Wherein, D is the grayscale value of the pixel, R is the grayscale value of the red sub-pixel, G is the grayscale value of the blue sub-pixel, and B is the grayscale value of the green sub-pixel.

[0094] It should also be noted that the conversion relationship between the grayscale value of an image and the grayscale value of a pixel in the image can refer to formula (1-2).

[0095]

[0096] Wherein, G is the grayscale value of the image (first grayscale value), n is the number of pixels in the image, n is a positive integer, and Dn is the grayscale value of the nth pixel in the image.

[0097] Combine the following Figures 8 to 11 The technical effects that can be achieved by method 300 are discussed in detail. Figures 8 to 11In the embodiment, the voltage corresponding to the grayscale value of 12 is set to perform dithering on the first image, and the LQE algorithm is turned on when the grayscale value is 3 to 11, and the dithering processing method in the existing scheme and the dithering processing effect of method 300 are verified respectively. Among them, the dithering processing method in the existing scheme uses an irregularly arranged dithering diagram for the first image with different grayscale values.

[0098] like Figure 8 As shown, Figure 8 (a) is the display effect of the first image after the dithering process in the prior art. Figure 8 (b) in Figure 8 A partial enlarged view of (a) in FIG. Figure 8 (c) in the figure is the display effect of the first image after the dithering process in method 300. Figure 8 (d) in Figure 8 A partial enlarged view of (c) in the figure. Figure 8 (b) and Figure 8 From the comparison of (d) in FIG. 1 , it can be seen that when the grayscale value is 3 and the LQE algorithm is turned on, the number of horizontal or vertical stripes in the displayed image processed by method 300 is significantly reduced, and the graininess is significantly reduced.

[0099] like Fig. 9 As shown, Fig. 9 (a) is the display effect of the first image after the dithering process in the prior art. Fig. 9 (b) in Fig. 9 A partial enlarged view of (a) in FIG. Fig. 9 (c) in the figure is the display effect of the first image after the dithering process in method 300. Fig. 9 (d) in Fig. 9 A partial enlarged view of (c) in the figure. Fig. 9 (b) and Fig. 9 From the comparison of (d) in FIG. 1 , it can be seen that when the grayscale value is 5 and the LQE algorithm is turned on, the number of horizontal or vertical stripes in the displayed image processed by method 300 is significantly reduced, and the graininess is significantly reduced.

[0100] like Fig.10 As shown, Fig.10 (a) is the display effect of the first image after the dithering process in the prior art. Fig.10 (b) in Fig.10 A partial enlarged view of (a) in FIG. Fig.10 (c) in the figure is the display effect of the first image after the dithering process in method 300. Fig.10 (d) in Fig.10 A partial enlarged view of (c) in the figure. Fig.10 (b) and Fig.10From the comparison of (d) in FIG. 1 , it can be seen that when the grayscale value is 8 and the LQE algorithm is turned on, the number of horizontal or vertical stripes in the displayed image processed by method 300 is significantly reduced, and the graininess is significantly reduced.

[0101] In summary, in the existing solution, when the driver chip performs dithering processing on the first image with different grayscale values, it is necessary to use an irregularly arranged dithering graph, which exacerbates the generation of horizontal and vertical stripes in the display panel and causes the displayed image to present a heavier sense of graininess. In method 300, the first dithering graph includes a plurality of regularly arranged second dithering graphs, and the grayscale values ​​of the corresponding first pixels in the plurality of second dithering graphs are the same. In this way, when the display panel displays the second image after dithering processing, it can eliminate horizontal or vertical stripes and reduce the sense of graininess of the display, thereby improving the user's visual experience.

[0102] Fig.11 It is a schematic diagram showing the variation of the brightness curves of an existing solution and an optimized solution with the grayscale value provided in an embodiment of the present application.

[0103] like Fig.11 As shown, after the first image is subjected to dithering processing by the existing scheme, compared with not subjected to dithering processing ( Fig.11 ), the display brightness value at each grayscale value is greatly improved, and the curve shows a large volatility and non-smooth characteristics. After the first image is dithered by method 300, compared with not performing dithering, the variation range of the display brightness value at each grayscale value is significantly reduced, and the curve is smoother, and the display brightness value variation is gradual and continuous. This situation shows that method 300 can effectively improve the brightness performance of the image, ensure that the overall brightness difference between images before and after the dithering process is maintained at a low level, and help to achieve a smoother grayscale transition.

[0104] It should be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0105] Fig.12 1 is a schematic diagram of a processing device provided in an embodiment of the present application, and the device 1200 may include an acquisition unit 1210, a storage unit 1220, and a processing unit 1230. The acquisition unit 1210 is used to acquire instructions and / or data, the storage unit 1220 is used to implement a corresponding storage function and store corresponding instructions and / or data; the processing unit 1230 is used to perform data processing, so that the device 1200 implements the aforementioned processing method.

[0106] In one embodiment, the device 1200 includes: an acquisition unit 1210 and a processing unit 1230, the acquisition unit 1210 is used to acquire the first number of illuminated pixels and the first grayscale value of the first image; the processing unit 1230 is used to: determine a first jitter map based on the first number of illuminated pixels, the first grayscale value and the first corresponding relationship, the first jitter map includes multiple periodically arranged second jitter maps, and the first corresponding relationship is the corresponding relationship between the number of illuminated pixels, the grayscale value and the jitter map; adjust the grayscale value of at least part of the pixels in the first image according to the first jitter map to obtain the second image.

[0107] In a possible implementation, the first jitter image includes a plurality of pixels distributed in M ​​rows and N columns, the plurality of pixels include a first pixel, the first pixel includes a sub-pixel whose grayscale value is not 0, and M and N are positive integers.

[0108] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the third sub-pixel in the third row and fourth column, and the second sub-pixel in the fourth row and second column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0109] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; among the P pixels, the third sub-pixel in the first row and first column, the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the second sub-pixel in the third row and second column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel and the third sub-pixel in the fourth row and fourth column have a grayscale value of a first value, the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0.

[0110] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the second sub-pixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, and the first value is greater than 0, and the grayscale values ​​of the remaining sub-pixels are 0; the first sub-pixels and the third sub-pixels in the first row and second column, the first row and fourth column, the second row and third column, the third row and second column, the third row and second column, the third row and fourth column, the fourth row and first column, and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining sub-pixels are 0.

[0111] In one possible implementation, M=4, N=8, and the second jitter diagram includes P pixels distributed in 4 rows and 4 columns, and each pixel includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the grayscale values ​​of the first sub-pixel in the first row and third column, the second sub-pixel in the first row and fourth column, the second sub-pixel in the second row and third column, the third sub-pixel in the second row and fourth column, the first sub-pixel in the third row and first column, the third sub-pixel in the third row and third column, the second sub-pixel in the fourth row and first column, the first sub-pixel in the fourth row and second column, and the first sub-pixel in the fourth row and fourth column among the P pixels are first values, and the first value is greater than 0; the grayscale values ​​of the third sub-pixel in the first row and first column, the second sub-pixel in the third row and second column, and the third sub-pixel in the fourth row and second column among the P pixels are second values, and the second value is greater than the first value; the grayscale values ​​of the remaining sub-pixels are 0.

[0112] Fig.13 It is a schematic diagram of another processing device provided in an embodiment of the present application.

[0113] The device 1300 includes: a memory 1310, a processor 1320, and a communication interface 1330. The memory 1310, the processor 1320, and the communication interface 1330 are connected through an internal connection path, the memory 1310 is used to store instructions, and the processor 1320 is used to execute the instructions stored in the memory 1310 to control the communication interface 1330 to obtain information, so that the device 1300 implements the aforementioned processing method. Optionally, the memory 1310 can be coupled to the processor 1320 through an interface, or can be integrated with the processor 1320.

[0114] It should be noted that the communication interface 1330 uses a transceiver device such as, but not limited to, a transceiver. The communication interface 1330 may also include an input / output interface.

[0115] The processor 1320 stores one or more computer programs, which include instructions. When the instructions are executed by the processor 1320, the processing device 1300 executes the processing methods in the above embodiments.

[0116] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1320 or an instruction in the form of software. The method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1310, and the processor 1320 reads the information in the memory 1310 and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0117] Optionally, Fig.13 The communication interface 1330 in the Fig.12 The acquisition unit 1210 in Fig.13 The memory 1310 in the embodiment can realize Fig.12 The storage unit 1220, Fig.13 The processor 1320 in the embodiment can implement Fig.12 The processing unit 1230 in.

[0118] The embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program code. When the computer program code is executed on a computer, the computer executes the above method 300.

[0119] The embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the above method 300.

[0120] The embodiment of the present application further provides a chip, including: a circuit, wherein the circuit is used to execute the above method 300.

[0121] The embodiment of the present application further provides a display panel, the display panel comprising: Fig.12 or Fig.13 The processing device shown.

[0122] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0123] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0124] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0125] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0126] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0127] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0128] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A processing method, characterized in that: The method is applied to a driver chip, and the method comprises: Acquire a first pixel light-up number and a first grayscale value of a first image; Determine a first jitter diagram according to the first number of pixels lit, the first grayscale value and a first corresponding relationship, wherein the first jitter diagram includes a plurality of periodically arranged second jitter diagrams, and the first corresponding relationship is a corresponding relationship between the number of pixels lit, the grayscale value and the jitter diagram; The grayscale values ​​of at least some pixels in the first image are adjusted according to the first jitter image to obtain a second image.

2. The method according to claim 1, characterized in that The first jitter image includes a plurality of pixels distributed in M ​​rows and N columns, the plurality of pixels include a first pixel, the first pixel includes a sub-pixel whose grayscale value is not 0, and M and N are positive integers.

3. The method according to claim 2, characterized in that M=4, N=8, the second jitter pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel and a third sub-pixel; The grayscale values ​​of the first subpixel in the first row and third column, the third subpixel in the third row and fourth column, and the second subpixel in the fourth row and second column of the P pixels are the first value, which is greater than 0, and the grayscale values ​​of the remaining subpixels are 0.

4. The method according to claim 2, characterized in that M=4, N=8, the second jitter pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel and a third sub-pixel; Among the P pixels, the grayscale values ​​of the third subpixel in the first row and first column, the first subpixel in the first row and third column, the second subpixel in the first row and fourth column, the second subpixel in the second row and third column, the third subpixel in the second row and fourth column, the first subpixel in the third row and first column, the second subpixel in the third row and second column, the third subpixel in the third row and third column, the second subpixel in the fourth row and first column, the first and third subpixels in the fourth row and fourth column, and the first subpixel in the fourth row and fourth column are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining subpixels are 0.

5. The method according to claim 2, characterized in that M=4, N=8, the second jitter pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel and a third sub-pixel; The grayscale values ​​of the second subpixels in the first row and first column, the first row and third column, the second row and second column, the second row and fourth column, the third row and first column, the third row and third column, the fourth row and second column, and the fourth row and fourth column of the P pixels are the first value, the first value is greater than 0, and the grayscale values ​​of the remaining subpixels are 0; The first subpixel and the third subpixel in the first row and second column, the first row and fourth column, the second row and first column, the second row and third column, the third row and second column, the third row and fourth column, the fourth row and first column and the fourth row and third column of the P pixels are the first value, and the grayscale values ​​of the remaining subpixels are 0.

6. The method according to claim 2, characterized in that M=4, N=8, the second jitter pattern includes P pixels distributed in 4 rows and 4 columns, each pixel includes: a first sub-pixel, a second sub-pixel and a third sub-pixel; Among the P pixels, the grayscale values ​​of the first subpixel in the first row and third column, the second subpixel in the first row and fourth column, the second subpixel in the second row and third column, the third subpixel in the second row and fourth column, the first subpixel in the third row and first column, the third subpixel in the third row and third column, the second subpixel in the fourth row and first column, the first subpixel in the fourth row and second column, and the first subpixel in the fourth row and fourth column are the first value, and the first value is greater than 0; The grayscale values ​​of the third subpixel in the first row and first column, the second subpixel in the third row and second column, and the third subpixel in the fourth row and second column among the P pixels are a second value, and the second value is greater than the first value; The grayscale values ​​of the remaining sub-pixels are 0.

7. A processing device, characterized in that: The apparatus comprises units or modules for implementing the method according to any one of claims 1 to 6.

8. A processing device, characterized in that: The method comprises a processor and a memory, wherein the processor is coupled to the memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer program or instructions in the memory, so that the method according to any one of claims 1 to 6 is executed.

9. A chip, characterized in that: The chip comprises a circuit for executing the method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program code, and when the computer program code is executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 6.

11. A display panel, characterized in that: The display panel comprises the processing device according to claim 7 or 8.

Images