Color deviation adjusting method and liquid crystal display screen

Abstract

Disclosed in the present application are a color deviation adjusting method and a liquid crystal display screen. The color deviation adjusting method comprises: in a display mode, an sRGB color space calling a first color calibration matrix; in the display mode, a DCI-P3 color space calling a second color calibration matrix; and, on the basis of a chromaticity coordinate difference, configuring the DCI-P3 color space to call in another mode a third color calibration matrix.

Description

Color difference adjustment method and liquid crystal display

[0001] This application claims priority to Chinese patent application No. 202410072990.3 filed on January 17, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a color difference adjustment method and a liquid crystal display screen. Background Art

[0003] As people's demands for display screens become more and more diverse, dynamic switching between different color gamuts can maximize the use of each color space and achieve the effect of presenting different images in their original colors. SUMMARY OF THE INVENTION

[0004] While switching between different color gamuts can meet the display requirements of different application scenarios, there are also some display color differences between different color gamuts. This application provides a color difference adjustment method and a liquid crystal display screen that can solve the problem of display color differences between different color gamuts.

[0005] In a first aspect, the present application provides a color difference adjustment method, which is applied to a display screen, the display screen having an sRGB color space and a DCI-P3 color space, and the display screen also having a display mode and other modes. The color difference adjustment method includes: determining the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space; establishing a color calibration matrix library, the color calibration matrix library including a first color calibration matrix, a second color calibration matrix and a third color calibration matrix; wherein the sRGB color space calls the first color calibration matrix in the display mode, and the DCI-P3 color space calls the second color calibration matrix in the display mode; and configuring the DCI-P3 color space to call the third color calibration matrix in other modes according to the color coordinate difference.

[0006] In a second aspect, the present application provides a liquid crystal display screen, which has an sRGB color space and a DCI-P3 color space. The liquid crystal display screen also has a display mode and other modes. The liquid crystal display screen includes: an acquisition module for determining the color coordinate difference between the color coordinates displayed under the sRGB color space and the color coordinates displayed under the DCI-P3 color space; a data module for establishing a color calibration matrix library, the color calibration matrix library including a first color calibration matrix, a second color calibration matrix and a third color calibration matrix; and a calling module for the sRGB color space to call the first color calibration matrix in the display mode, the DCI-P3 color space to call the second color calibration matrix in the display mode, and configure the DCI-P3 color space to call the third color calibration matrix in the other modes according to the color coordinate difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0008] FIG1 is a schematic diagram showing the comparison of a portrait image in different color gamuts.

[0009] FIG. 2 is a schematic diagram of a 1931 CIE-XYZ chromaticity.

[0010] FIG3 is a schematic diagram showing a comparison of spectrums in different color gamuts provided in an embodiment of the present application.

[0011] FIG4 is a flow chart of a color difference adjustment method provided in an embodiment of the present application.

[0012] FIG. 5 is a schematic diagram of color point differences in different color gamuts before adjustment provided by an embodiment of the present application.

[0013] FIG6 is a schematic diagram showing changes in color points of different color gamuts after adjustment according to an embodiment of the present application.

[0014] FIG7 is a schematic structural diagram of a liquid crystal display screen provided in an embodiment of the present application.

[0015] FIG8 is a schematic structural diagram of a calling module in FIG7 provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. The features specified as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0018] In a first aspect, the present application provides a color difference adjustment method, which is applied to a display screen, the display screen having an sRGB color space and a DCI-P3 color space, and the display screen also having a display mode and other modes. The color difference adjustment method includes: determining the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space; establishing a color calibration matrix library, the color calibration matrix library including a first color calibration matrix, a second color calibration matrix and a third color calibration matrix; wherein the sRGB color space calls the first color calibration matrix in the display mode, and the DCI-P3 color space calls the second color calibration matrix in the display mode; and configuring the DCI-P3 color space to call the third color calibration matrix in other modes according to the color coordinate difference.

[0019] In some embodiments, the other modes include a photographing mode, and configuring the DCI-P3 color space according to the color coordinate difference to call the third color calibration matrix in the other mode includes: configuring the DCI-P3 color space according to the color coordinate difference to call the third color calibration matrix in the photographing mode.

[0020] In some embodiments, establishing a color calibration matrix library includes: obtaining target color coordinates of a white screen in the DCI-P3 color space in the shooting mode and a standard color point of the DCI-P3 color space; and determining the third color calibration matrix based on the target color coordinates and the standard color point.

[0021] In some embodiments, determining the third color calibration matrix based on the target color coordinates and the standard color point includes: converting the target color coordinates into corresponding tristimulus value coordinates, where Y in the tristimulus value under the white screen is 1; and determining the third color calibration matrix based on the tristimulus value coordinates and the standard color point.

[0022] In some embodiments, determining the third color calibration matrix based on the tristimulus value coordinates and the standard color point includes: converting the color coordinates of the standard color point into a corresponding color coordinate matrix; determining an intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix; and determining the third color calibration matrix according to the color coordinate matrix and the intermediate matrix.

[0023] In some embodiments, determining the intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix includes: obtaining an inverse matrix of the color coordinate matrix according to the color coordinate matrix; and obtaining the intermediate matrix according to the product of the inverse matrix of the color coordinate matrix and the tristimulus value coordinates.

[0024] In some embodiments, determining the third color calibration matrix based on the color coordinate matrix and the intermediate matrix includes: converting the intermediate matrix into a corresponding multidimensional matrix; and obtaining the third color calibration matrix based on the product of the color coordinate matrix and the multidimensional matrix.

[0025] In some embodiments, the color gamut of the DCI-P3 color space is wider than the color gamut of the sRGB color space.

[0026] In some embodiments, the display screen further has an Adobe color space, and the color difference adjustment method further includes: selecting the sRGB color space, the DCI-P3 color space, or the Adobe color space for display according to an application scenario.

[0027] In some embodiments, the other modes include a sensing recognition mode, and the sensing recognition mode is a touch mode or a fingerprint recognition mode.

[0028] In a second aspect, the present application provides a liquid crystal display screen, which has an sRGB color space and a DCI-P3 color space. The liquid crystal display screen also has a display mode and other modes. The liquid crystal display screen includes: an acquisition module for determining the color coordinate difference between the color coordinates displayed under the sRGB color space and the color coordinates displayed under the DCI-P3 color space; a data module for establishing a color calibration matrix library, the color calibration matrix library including a first color calibration matrix, a second color calibration matrix and a third color calibration matrix; and a calling module for the sRGB color space to call the first color calibration matrix in the display mode, the DCI-P3 color space to call the second color calibration matrix in the display mode, and configure the DCI-P3 color space to call the third color calibration matrix in the other modes according to the color coordinate difference.

[0029] In some embodiments, the other modes include a photographing mode, and the calling module is further configured to configure the DCI-P3 color space according to the color coordinate difference and call the third color calibration matrix in the photographing mode.

[0030] In some embodiments, the data module includes: a first acquisition unit, used to obtain the target color coordinates of the white screen of the DCI-P3 color space in the shooting mode and the standard color point of the DCI-P3 color space; and a first determination unit, used to determine the third color calibration matrix based on the target color coordinates and the standard color point.

[0031] In some embodiments, the first determination unit includes: a conversion subunit, configured to convert the target color coordinates into corresponding tristimulus value coordinates, where Y in the tristimulus value under the white screen is 1; and a first determination subunit, configured to determine the third color calibration matrix based on the tristimulus value coordinates and the standard color point.

[0032] In some embodiments, the first determining subunit includes: a first converter for converting the color coordinates of the standard color point into a corresponding color coordinate matrix; a first determiner for determining an intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix; and a second determiner for determining the third color calibration matrix based on the color coordinate matrix and the intermediate matrix.

[0033] In some embodiments, the first determiner includes: a first calculation circuit for obtaining an inverse matrix of the color coordinate matrix based on the color coordinate matrix; and a second calculation circuit for obtaining the intermediate matrix based on the product of the inverse matrix of the color coordinate matrix and the three stimulus value coordinates.

[0034] In some embodiments, the second determiner includes: a second converter for converting the intermediate matrix into a corresponding multidimensional matrix; and a third calculation circuit for obtaining the third color calibration matrix according to the product of the color coordinate matrix and the multidimensional matrix.

[0035] In some embodiments, the color gamut of the DCI-P3 color space is wider than the color gamut of the sRGB color space.

[0036] In some embodiments, the liquid crystal display further has an Adobe color space, and the liquid crystal display further includes: a display module for selecting the sRGB color space, the DCI-P3 color space, or the Adobe color space for display according to an application scenario.

[0037] In some embodiments, the other modes include a sensing recognition mode, and the sensing recognition mode is a touch mode or a fingerprint recognition mode.

[0038] The color difference adjustment method and LCD display provided in the present application call a first color calibration matrix in the display mode through the sRGB color space, call a second color calibration matrix in the display mode through the DCI-P3 color space, and configure the DCI-P3 color space to call a third color calibration matrix in other modes based on the color coordinate difference. This can make the colors displayed by the DCI-P3 color space in other modes closer to the colors displayed by the sRGB color space in the display mode, thereby reducing the color difference between the DCI-P3 color space and the sRGB color space in different modes, and further improving the problem of display color difference between different color gamuts.

[0039] As demand for displays becomes increasingly diverse, dynamic switching between different color gamuts can maximize the performance of each color space, ensuring that different images are presented in their original colors. These gamuts include sRGB (standard red, green, and blue), DCI-P3 (Digital Cinema Initiatives-Protocol 3), and Adobe color space.

[0040] Color gamut switching display technology supports dynamic switching between the DCI-P3 color space, Adobe color space, and sRGB color space, achieving an exceptionally high standard of color calibration (delta E) of less than 1. This technology allows for flexible switching based on the visual needs of different application scenarios (such as entertainment, daily office work, and professional applications), ensuring that the display and image color gamut match.

[0041] However, while switching between different color gamuts can meet the display requirements of different application scenarios, there are also some display color differences between different color gamuts. For example, when the display uses a camera to take pictures, the DCI-P3 color space and the sRGB color space have different red and green colors. Compared with the portrait image presented by the sRGB color space, the portrait image presented by the DCI-P3 color space will appear reddish, as shown in Figure 1.

[0042] The specific reason why portrait images appear red when taking photos is as follows: There are differences in the display process between the DCI-P3 color space and the sRGB color space. That is, the same image displays different color points. For example, a pure skin image with RGB grayscale of 142 / 117 / 120 has color coordinates of (0.346, 0.320) in the DCI-P3 color space, while it has color coordinates of (0.337, 0.319) in the sRGB color space. As shown in Figure 2, compared to the sRGB color space, the DCI-P3 color space appears reddish. The spectrum results shown in Figure 3 show that the proportion of red (R) in the DCI-P3 color space is greater than that in the sRGB color space, which matches the reddish color point in the DCI-P3 color space shown in Figure 2.

[0043] In Figure 3, the curve represented by S1 represents the proportion of red at the corresponding wavelength in the sRGB color space. The curve within the rectangular dashed box represents the proportion of red at the corresponding wavelength in the DCI-P3 color space. It can be seen that in the oval dashed box, the curve within the rectangular dashed box is higher than S1 on the vertical axis, which means that the proportion of red (R) in the DCI-P3 color space is greater than the proportion of red (R) in the sRGB color space. It should be understood that in Figure 3, the curve represented by S1 does not include the curve within the rectangular dashed box. In addition, the proportion of red at the corresponding wavelength in the DCI-P3 color space includes not only the curve within the rectangular dashed box, but also a curve that is approximately the same as the curve represented by S1. However, since this curve is approximately the same as the curve represented by S1, this curve is not marked in Figure 3.

[0044] In view of the aforementioned problem of display color difference between different color gamuts, this embodiment provides a color difference adjustment method, which is applied to a display screen having both an sRGB color space and a DCI-P3 color space, and also having display modes and other modes. As shown in FIG4 , the color difference adjustment method includes the following steps:

[0045] Step S10: Determine the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space.

[0046] Step S20: establishing a color calibration matrix library.

[0047] Step S30: configuring the DCI-P3 color space according to the color coordinate difference and calling a third color calibration matrix in other modes.

[0048] The color calibration matrix library includes a first color calibration matrix, a second color calibration matrix, and a third color calibration matrix. The sRGB color space calls the first color calibration matrix in the display mode, and the DCI-P3 color space calls the second color calibration matrix in the display mode.

[0049] It can be understood that the color difference adjustment method and LCD display provided in this embodiment call the first color calibration matrix in the display mode through the sRGB color space, call the second color calibration matrix in the display mode through the DCI-P3 color space, and configure the DCI-P3 color space to call the third color calibration matrix in other modes based on the color coordinate difference. This can make the colors displayed by the DCI-P3 color space in other modes closer to the colors displayed by the sRGB color space in the display mode, thereby reducing the color difference between the DCI-P3 color space and the sRGB color space in different modes, and further improving the problem of display color difference between different color gamuts.

[0050] It should be noted that the DCI-P3 color space is a wide color gamut standard introduced by the American film industry and is also one of the color standards for current digital movie playback equipment. The color gamut coverage of the DCI-P3 color space is wider, which is 25% higher than the color gamut coverage of the sRGB color space. Therefore, in this application, the color calibration matrix under the DCI-P3 color space is adjusted, the adjustable range is larger, and there will be no dead angles that cannot be adjusted. Of course, in some other embodiments, it is also possible to choose to adjust the color calibration matrix under the sRGB color space according to the inventive concept of this application. Although the adjustable range is smaller, the corresponding beneficial effects can still be achieved.

[0051] In some embodiments, the display also supports Adobe color space. The display or the user can select sRGB color space, DCI-P3 color space, or Adobe color space for display according to the application scenario. This allows for switching between more different color gamuts, which is more conducive to rendering different images in their original colors.

[0052] Among them, the Adobe color space is a color standard developed by Adobe in 1998. It adds the CMYK (C: Cyan; M: Magenta; Y: Yellow; K: Black) color gamut on the basis of the sRGB color space. Compared with the sRGB color space, it mainly improves the cyan color system and is more widely used in the printing industry, graphic packaging and printing design fields.

[0053] In some embodiments, other modes include a photographing mode, and configuring the DCI-P3 color space according to the color coordinate difference to call the third color calibration matrix in the other modes includes: configuring the DCI-P3 color space according to the color coordinate difference to call the third color calibration matrix in the photographing mode.

[0054] It should be noted that the display mode refers to the normal display of the display screen, such as displaying a static image or a dynamic image. Different from the display mode, other modes can also be sensing recognition modes, such as touch mode or fingerprint recognition mode.

[0055] The method for establishing a color calibration matrix library is as follows, wherein Table 1 shown below is the standard color points under different color gamuts.

[0056]

[0057] These standard color points can be known in advance. Taking the target color coordinates of the white screen in the DCI-P3 color space display mode as (0.3127, 0.3290) as an example, based on these standard color points, the following matrix can be obtained:

[0058] (1-1)

[0059] (1-2)

[0060] (1-3)

[0061] (1-4)

[0062] Among them, w xyz It is obtained based on the target color coordinates of the white screen in the display mode of the DCI-P3 color space. Let Y in the three stimulus values ​​under the white screen be 1, then w xyz Converted into the corresponding tristimulus value coordinates w XYZ , which is calculated as follows:

[0063] (1-5)

[0064] w XYZ It can also be obtained by the following formula 1-6:

[0065] (1-6)

[0066] in, is the color coordinate matrix. It can be seen that the color coordinate matrix is ​​obtained by converting the color coordinates of the standard color points.

[0067] By transforming Formula 1-6, we can obtain the following Formula 1-7:

[0068] (1-7)

[0069] in, is the inverse matrix of the color coordinate matrix. is the intermediate matrix.

[0070] The multidimensional matrix converted from the intermediate matrix.

[0071] The third color calibration matrix (M) can be obtained:

[0072]

[0073] Based on a calculation process similar to the above, we can also obtain the matrices corresponding to different target color coordinates in the sRGB color space and other specific color spaces. Based on this, taking the target color coordinates in the sRGB color space as (0.3127, 0.3290) as an example, the third color calibration matrix is ​​shown in Table 2 below:

[0074]

[0075] In the DCI-P3 color space, when the target color coordinates change, for example, to (0.3037, 0.3280), the calculation process of the third color calibration matrix is ​​as follows:

[0076] (2-4)

[0077] Among them, w xyz It is obtained based on the target color coordinates of the white screen in the photo mode based on the DCI-P3 color space. Let Y in the three stimulus values ​​under the white screen be 1, then w xyz Converted into the corresponding tristimulus value coordinates w XYZ , which is calculated as follows:

[0078] (2-5)

[0079] is the color coordinate matrix. It can be seen that the color coordinate matrix is ​​obtained by converting the color coordinates of the standard color points.

[0080] By transforming formula 1-6, we can get the following formula 2-7:

[0081] (2-7)

[0082] in, is the inverse matrix of the color coordinate matrix. is the intermediate matrix.

[0083] The multidimensional matrix converted from the intermediate matrix.

[0084] The third color calibration matrix (M) can be obtained:

[0085]

[0086] For example, for a pure color picture of skin with RGB grayscale of (142, 117, 120), the color coordinates displayed in the DCI-P3 color space are (0.346, 0.320), and the color coordinates displayed in the sRGB color space are (0.337, 0.319).

[0087] When taking photos with a camera, based on the color coordinate difference between the portrait image in the DCI-P3 color space and the sRGB color space (for example, the color coordinate in the DCI-P3 color space is (Wx, Wy), the color coordinate in the sRGB color space is (Wx-0.009, Wy-0.001)), the third color calibration matrix shown in Table 3 is called:

[0088]

[0089] For images with an RGB grayscale of (142, 117, 120), the DCI-P3 color space can adjust the color coordinates from (0.346, 0.320) to (0.337, 0.319), making the color coordinates in the DCI-P3 color space close to those in the sRGB color space. This solves the problem of color difference in portrait color display when switching between different color gamuts when taking photos, and improves the user experience.

[0090] The above example only shows a different DCI-P3 color space table transformation to achieve display screen color shift. Specifically, the matrix of Table 3 can be expanded and updated according to the color coordinate differences of different display modes to solve the display color difference problem in different display application scenarios.

[0091] As shown in Figure 5, when the RGB grayscales are (142, 117, 120) respectively, there is a significant difference between the color coordinates (P1) in the DCI-P3 color space and the color coordinates (P2) in the sRGB color space. The DCI-P3 color space is richer than the sRGB color space. Therefore, by adjusting the color point in the DCI-P3 color space to match the color point in the sRGB color space, the color difference caused by switching between different color gamuts in the application scenario of taking pictures can be solved.

[0092] Specifically, as shown in Figure 6, the adjustment direction of the color point in the DCI-P3 color space is to move the color point in the DCI-P3 color space to the left and closer to the color point in the sRGB color space. The brightness adjustment scheme corresponding to the RGB of the synthetic white screen is to reduce the grayscale voltage of the red pixel or increase the grayscale voltage of the green pixel and the blue pixel.

[0093] In some embodiments, this embodiment provides a liquid crystal display screen that performs the above-mentioned color difference adjustment method.

[0094] It can be understood that since the LCD display provided by this embodiment implements the above-mentioned color difference adjustment method, it can also call the first color calibration matrix in the display mode through the sRGB color space, call the second color calibration matrix in the display mode through the DCI-P3 color space, and configure the DCI-P3 color space to call the third color calibration matrix in other modes based on the color coordinate difference. This can make the colors displayed by the DCI-P3 color space in other modes closer to the colors displayed by the sRGB color space in the display mode, thereby reducing the color difference between the DCI-P3 color space and the sRGB color space in different modes, and further improving the problem of display color difference between different color gamuts.

[0095] It should be noted that in order for the LCD to be able to perform the above-mentioned color difference adjustment method, as shown in Figure 7, the LCD may include an acquisition module 100, a data module 200, and a calling module 300. The calling module 300 is connected to the acquisition module 100 and the data module 200. The acquisition module 100 is used to determine the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space. The data module 200 is used to establish a color calibration matrix library, which includes a first color calibration matrix, a second color calibration matrix, and a third color calibration matrix. The calling module 300 is used to call the first color calibration matrix in the sRGB color space display mode, call the second color calibration matrix in the DCI-P3 color space display mode, and configure the DCI-P3 color space to call the third color calibration matrix in other modes based on the color coordinate difference.

[0096] Specifically, as shown in Figure 8, the calling module 300 may include a first calling unit 310, a second calling unit 320 and a third calling unit 320. The first calling unit 310 is used to call the first color calibration matrix in the display mode of the sRGB color space, the second calling unit 320 is used to call the second color calibration matrix in the display mode of the DCI-P3 color space, and the third calling unit 320 is used to configure the DCI-P3 color space according to the color coordinate difference to call the third color calibration matrix in other modes.

[0097] It should be noted that the third calling unit 330 is further configured to call the third color calibration matrix in the photographing mode according to the color coordinate difference configuration DCI-P3 color space.

[0098] In some embodiments, the data module 200 includes a first acquisition unit and a first determination unit. The first acquisition unit is configured to acquire target color coordinates of a white screen in the DCI-P3 color space in a photo mode and a standard color point in the DCI-P3 color space. The first determination unit is configured to determine a third color calibration matrix based on the target color coordinates and the standard color point.

[0099] In some embodiments, the first determination unit includes a conversion subunit and a first determination subunit. The conversion subunit is configured to convert the target color coordinates into corresponding tristimulus value coordinates, where Y in the tristimulus value under a white screen is 1. The first determination subunit is configured to determine a third color calibration matrix based on the tristimulus value coordinates and the standard color point.

[0100] In some embodiments, the first determination subunit includes a first converter, a first determiner, and a second determiner. The first converter is configured to convert the color coordinates of the standard color point into a corresponding color coordinate matrix. The first determiner is configured to determine an intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix. The second determiner is configured to determine a third color calibration matrix based on the color coordinate matrix and the intermediate matrix.

[0101] In some embodiments, the first determiner includes a first calculation circuit and a second calculation circuit. The first calculation circuit is configured to obtain an inverse matrix of the color coordinate matrix based on the color coordinate matrix. The second calculation circuit is configured to obtain an intermediate matrix based on the product of the inverse matrix of the color coordinate matrix and the tristimulus value coordinates.

[0102] In some embodiments, the second determiner includes a second converter and a third calculation circuit. The second converter is configured to convert the intermediate matrix into a corresponding multidimensional matrix. The third calculation circuit is configured to obtain a third color calibration matrix based on the product of the color coordinate matrix and the multidimensional matrix.

[0103] In some embodiments, the color gamut of the DCI-P3 color space is wider than the color gamut of the sRGB color space.

[0104] In some embodiments, the display screen further has an Adobe color space, and the color difference adjustment method further includes: selecting the sRGB color space, the DCI-P3 color space, or the Adobe color space for display according to an application scenario.

[0105] In some embodiments, the other modes include a sensing recognition mode, and the sensing recognition mode is a touch mode or a fingerprint recognition mode.

[0106] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0107] The above is a detailed introduction to the color difference adjustment method and liquid crystal display provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A color difference adjustment method, which is applied to a display screen. The display screen has an sRGB color space and a DCI-P3 color space, and the display screen also has a display mode and other modes. The color difference adjustment method includes: Determining the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space; Establishing a color calibration matrix library, which includes a first color calibration matrix, a second color calibration matrix, and a third color calibration matrix; wherein, the sRGB color space calls the first color calibration matrix in the display mode, and the DCI-P3 color space calls the second color calibration matrix in the display mode; And Configuring the DCI-P3 color space to call the third color calibration matrix in the other mode according to the color coordinate difference.

2. The color difference adjustment method according to claim 1, wherein, The other mode includes a camera mode. The step of configuring the DCI-P3 color space to call the third color calibration matrix in the other mode according to the color coordinate difference includes: Configuring the DCI-P3 color space to call the third color calibration matrix in the camera mode according to the color coordinate difference.

3. The color difference adjustment method according to claim 2, wherein, The step of establishing the color calibration matrix library includes: Obtaining the target color coordinates of the white screen in the DCI-P3 color space in the camera mode and the standard color points of the DCI-P3 color space; and Determining the third color calibration matrix based on the target color coordinates and the standard color points.

4. The color difference adjustment method according to claim 3, wherein The step of determining the third color calibration matrix based on the target color coordinates and the standard color points includes: Converting the target color coordinates into corresponding tristimulus value coordinates, where Y in the tristimulus values under the white screen is 1; and Determining the third color calibration matrix based on the tristimulus value coordinates and the standard color points.

5. The color difference adjustment method according to claim 4, wherein, The step of determining the third color calibration matrix based on the tristimulus value coordinates and the standard color points includes: Converting the color coordinates of the standard color points into a corresponding color coordinate matrix; Determining an intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix; and Determining the third color calibration matrix according to the color coordinate matrix and the intermediate matrix.

6. The color difference adjustment method according to claim 5, wherein, The step of determining the intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix includes: Obtaining the inverse matrix of the color coordinate matrix according to the color coordinate matrix; and Obtaining the intermediate matrix according to the product of the inverse matrix of the color coordinate matrix and the tristimulus value coordinates.

7. The color difference adjustment method according to claim 5, wherein, The step of determining the third color calibration matrix according to the color coordinate matrix and the intermediate matrix includes: Converting the intermediate matrix into a corresponding multi-dimensional matrix; and Obtaining the third color calibration matrix according to the product of the color coordinate matrix and the multi-dimensional matrix.

8. The color difference adjustment method according to any one of claims 1-7, wherein, The gamut of the DCI-P3 color space is wider than that of the sRGB color space.

9. The color difference adjustment method according to claim 1, wherein, The display screen also has an Adobe color space. The color difference adjustment method further includes: Selecting the sRGB color space, the DCI-P3 color space, or the Adobe color space for display according to the application scenario.

10. The color difference adjustment method according to claim 1, wherein, The other modes include an inductive recognition mode, which is a touch mode or a fingerprint recognition mode.

11. A liquid crystal display screen, which has an sRGB color space and a DCI-P3 color space, and also has a display mode and other modes. The liquid crystal display screen includes: An acquisition module, configured to determine the color coordinate difference between the color coordinates displayed in the sRGB color space and the color coordinates displayed in the DCI-P3 color space; A data module, configured to establish a color calibration matrix library, which includes a first color calibration matrix, a second color calibration matrix, and a third color calibration matrix; And An invocation module, configured to invoke the first color calibration matrix in the sRGB color space in the display mode, invoke the second color calibration matrix in the DCI-P3 color space in the display mode, and configure the DCI-P3 color space to invoke the third color calibration matrix in the other modes according to the color coordinate difference.

12. The liquid crystal display screen according to claim 11, wherein, The other modes include a photographing mode, and the invocation module is further configured to configure the DCI-P3 color space to invoke the third color calibration matrix in the photographing mode according to the color coordinate difference.

13. The liquid crystal display screen according to claim 12, wherein, The data module includes: A first acquisition unit, configured to acquire the target color coordinates of the white screen in the DCI-P3 color space in the photographing mode and the standard color points of the DCI-P3 color space; and A first determination unit, configured to determine the third color calibration matrix based on the target color coordinates and the standard color points.

14. The liquid crystal display screen according to claim 13, wherein, The first determination unit includes: A conversion sub-unit, configured to convert the target color coordinates into corresponding tristimulus value coordinates, where Y in the tristimulus values under the white screen is 1; and A first determination sub-unit, configured to determine the third color calibration matrix based on the tristimulus value coordinates and the standard color points.

15. The liquid crystal display screen according to claim 14, wherein, The first determination sub-unit includes: A first converter, configured to convert the color coordinates of the standard color points into a corresponding color coordinate matrix; A first determiner, configured to determine an intermediate matrix based on the tristimulus value coordinates and the color coordinate matrix; and A second determiner, configured to determine the third color calibration matrix according to the color coordinate matrix and the intermediate matrix.

16. The liquid crystal display screen according to claim 15, wherein, The first determiner includes: A first calculation circuit, configured to obtain the inverse matrix of the color coordinate matrix according to the color coordinate matrix; and A second calculation circuit, configured to obtain the intermediate matrix according to the product of the inverse matrix of the color coordinate matrix and the tristimulus value coordinates.

17. The liquid crystal display screen according to claim 15, wherein, The second determiner includes: A second converter, configured to convert the intermediate matrix into a corresponding multi-dimensional matrix; and A third calculation circuit, configured to obtain the third color calibration matrix according to the product of the color coordinate matrix and the multi-dimensional matrix.

18. The liquid crystal display screen according to any one of claims 11-17, wherein, The color gamut of the DCI-P3 color space is wider than that of the sRGB color space.

19. The liquid crystal display screen according to claim 11, wherein, The liquid crystal display screen also has an Adobe color space, and the liquid crystal display screen further includes: A display module for selecting the sRGB color space, the DCI-P3 color space, or the Adobe color space for display according to the application scenario.

20. The liquid crystal display screen according to claim 11, wherein, The other modes include an induction recognition mode, and the induction recognition mode is a touch mode or a fingerprint recognition mode.

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