Target gray-scale value generation method and device of spliced screen and display device

Abstract

The invention provides a method and equipment for generating a target gray-scale value of a spliced screen and a display device, and the method comprises the steps: obtaining a plurality of pieces of first monochromatic optical information corresponding to a first display panel under a plurality of monochromatic pictures, and obtaining a target gray-scale value of the spliced screen according to the plurality of pieces of first monochromatic optical information; adjusting a plurality of pieces of second monochromatic optical information of the second display panel corresponding to the plurality of monochromatic pictures to determine a plurality of corresponding monochromatic compensation coefficients, further obtaining an initial gray-scale value of the second display panel, determining a corresponding target gray-scale value according to the plurality of monochromatic compensation coefficients and the initial gray-scale value, and displaying the target gray-scale value according to the target gray-scale value. The uniformity of picture display of the spliced screen is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to the manufacture of display devices, and specifically to a method for generating a target grayscale value of a spliced ​​screen, equipment thereof, and a display device. Background Art

[0002] The spliced ​​screen is a larger screen obtained by splicing the same or different types of screens. It has the advantages of high resolution, high visibility viewing angle, and good scalability.

[0003] At present, the commonly used spliced ​​screen is composed of LCD (Liquid Crystal Display) and LED (Light Emitting Diode) panels. However, due to the difference in color gamut and brightness between LCD and LED panels, it will affect the subjective visual experience, that is, the human eye will obviously feel the brightness difference between LCD and LED panels, resulting in poor uniformity of the spliced ​​screen.

[0004] Therefore, the uniformity of the picture display of the existing spliced ​​screen is poor and needs to be improved urgently. Summary of the invention

[0005] The object of the present invention is to provide a method for generating a target grayscale value of a spliced ​​screen, a device thereof, and a display device, so as to improve the technical problem of poor uniformity of picture display of the existing spliced ​​screen.

[0006] The present invention provides a method for generating a target grayscale value of a spliced ​​screen, comprising:

[0007] Acquire a plurality of first monochromatic optical information corresponding to the first display panel under a plurality of monochromatic images;

[0008] According to the plurality of first monochromatic optical information, adjusting the plurality of second monochromatic optical information of the second display panel corresponding to the plurality of monochromatic pictures to determine the corresponding plurality of monochromatic compensation coefficients, wherein the type of the first display panel is different from the type of the second display panel;

[0009] An initial grayscale value of the second display panel is acquired, and a corresponding target grayscale value is determined according to the plurality of single-color compensation coefficients and the initial grayscale value.

[0010] In one embodiment, the first display panel and the second display panel include a first sub-pixel, a second sub-pixel and a third sub-pixel of different colors;

[0011] The plurality of monochrome pictures include a plurality of first monochrome pictures corresponding to a plurality of first grayscale binding points of the first sub-pixel, a plurality of second monochrome pictures corresponding to a plurality of second grayscale binding points of the second sub-pixel, and a plurality of third monochrome pictures corresponding to a plurality of third grayscale binding points of the third sub-pixel;

[0012] The plurality of first monochromatic optical information include a plurality of first sub-optical information corresponding to the plurality of first monochromatic pictures, a plurality of second sub-optical information corresponding to the plurality of second monochromatic pictures, and a plurality of third sub-optical information corresponding to the plurality of third monochromatic pictures.

[0013] In one embodiment, the step of adjusting the second monochromatic optical information of the second display panel corresponding to the plurality of monochromatic images according to the plurality of first monochromatic optical information to determine the corresponding plurality of monochromatic compensation coefficients includes:

[0014] Acquire a plurality of reference monochromatic optical information corresponding to reference grayscale binding points of the first monochromatic optical information;

[0015] Acquire a plurality of non-reference monochromatic optical information corresponding to a plurality of non-reference grayscale binding points of the plurality of first monochromatic optical information;

[0016] A plurality of the monochromatic compensation coefficients are determined according to the reference monochromatic optical information and the plurality of the non-reference monochromatic optical information.

[0017] In one embodiment, the plurality of first grayscale binding points, the plurality of second grayscale binding points and the plurality of third grayscale binding points all include the reference grayscale binding point;

[0018] The step of obtaining the reference monochromatic optical information corresponding to the reference grayscale binding points of the plurality of the first monochromatic optical information comprises:

[0019] The first reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple first sub-optical information, the second reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple second sub-optical information, and the third reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple third sub-optical information.

[0020] In one embodiment, the plurality of first grayscale binding points, the plurality of second grayscale binding points and the plurality of third grayscale binding points all include a plurality of non-reference grayscale binding points;

[0021] The step of obtaining a plurality of non-reference monochromatic optical information corresponding to a plurality of non-reference grayscale binding points of the plurality of first monochromatic optical information comprises:

[0022] A plurality of first non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of first sub-optical information, a plurality of second non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of second sub-optical information, and a plurality of third non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of third sub-optical information.

[0023] In one embodiment, the step of determining the plurality of monochromatic compensation coefficients according to the reference monochromatic optical information and the plurality of non-reference monochromatic optical information comprises:

[0024] Determining a reference monochromatic compensation coefficient corresponding to the reference grayscale binding point according to the reference monochromatic optical information and the to-be-calibrated monochromatic optical information of the second display panel corresponding to the reference grayscale binding point;

[0025] According to the non-reference monochromatic optical information and the non-reference monochromatic optical information, at least one non-reference monochromatic compensation coefficient corresponding to the corresponding non-reference grayscale binding point is determined, and the reference monochromatic compensation coefficient and multiple non-reference monochromatic compensation coefficients constitute multiple monochromatic compensation coefficients.

[0026] In one embodiment, the step of obtaining the initial grayscale value of the second display panel and determining the corresponding target grayscale value according to the plurality of single color compensation coefficients and the initial grayscale value comprises:

[0027] Determining a grayscale value to be verified corresponding to the second display panel according to the plurality of single-color compensation coefficients and the initial grayscale value;

[0028] Acquire first color mixing optical information corresponding to the first display panel under the color mixing picture corresponding to the initial grayscale value;

[0029] According to the first color-mixing optical information, the grayscale value to be verified is adjusted to adjust the second color-mixing optical information of the second display panel corresponding to the color-mixing picture, so as to determine the target grayscale value.

[0030] The present invention provides a display device, comprising a spliced ​​arrangement of the first display panel and the second display panel as described above, and configured to drive the second display panel to emit light according to the target grayscale value as described above.

[0031] In one embodiment, the display device comprises:

[0032] A controller is used to execute program instructions to implement any of the methods for generating a target grayscale value of a spliced ​​screen as described above.

[0033] The present invention provides a target grayscale value generation device, which is used to execute program instructions to implement any of the above-mentioned methods for generating a target grayscale value of a spliced ​​screen.

[0034] The present invention provides a method for generating a target grayscale value of a spliced ​​screen, equipment therefor, and a display device. The method comprises obtaining a plurality of first monochromatic optical information corresponding to a first display panel under a plurality of monochromatic images, and adjusting a plurality of second monochromatic optical information corresponding to a plurality of the monochromatic images of a second display panel according to the plurality of first monochromatic optical information to determine a plurality of corresponding monochromatic compensation coefficients, further obtaining an initial grayscale value of the second display panel, and determining a corresponding target grayscale value according to the plurality of monochromatic compensation coefficients and the initial grayscale value, that is, adjusting parameters in the second display panel based on the first monochromatic optical information of the first display panel to obtain second monochromatic optical information that can match the first monochromatic optical information, thereby determining the monochromatic compensation coefficient, thereby achieving optical compensation for the second display panel, and improving the uniformity of the screen display of the spliced ​​screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention is further described below by means of the accompanying drawings. It should be noted that the accompanying drawings described below are only used to explain some embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings based on these accompanying drawings without creative work.

[0036] Figures 1 to 5 The five flowcharts are respectively of the method for generating the target grayscale value of the spliced ​​screen provided by the embodiments of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the said features. In addition, it should be noted that the drawings only provide structures that are closely related to the present invention, and some details that are not closely related to the invention are omitted. The purpose is to simplify the drawings and make the invention clear at a glance, rather than to indicate that the actual device is the same as the attached structure. Figure 1 The same is true, not set to the actual device limitations.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase at various times in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] The present invention provides a method for generating a target grayscale value of a spliced ​​screen, and the method may include but is not limited to the following embodiments and combinations of the following embodiments.

[0041] Among them, Figure 1 As shown, the method for generating the target grayscale value of the spliced ​​screen may include but is not limited to the following steps and a combination of the following steps.

[0042] S1, obtaining a plurality of first monochromatic optical information corresponding to a first display panel under a plurality of monochromatic images.

[0043] The application scenarios of the target grayscale value generated by the present method may include, but are not limited to, a spliced ​​screen. The spliced ​​screen may include a first display panel and a second display panel of different types. Due to the difference in color gamut and brightness between the first display panel and the second display panel, the subjective visual experience will be affected, that is, the human eye will obviously feel the brightness difference between the first display panel and the second display panel, resulting in poor uniformity of the picture display of the spliced ​​screen.

[0044] For ease of description, it can be considered that the first display panel has a smaller color gamut than the second display panel, and it is difficult to adjust the brightness and chromaticity of the first display panel to be consistent with the brightness and chromaticity of the second display panel. Therefore, the brightness and chromaticity of the first display panel can be used as a reference to adjust the display parameters of the second display panel to make its brightness and chromaticity consistent with the brightness and chromaticity of the first display panel. The first display panel can be, but not limited to, an LCD, and the second display panel can be, but not limited to, an LED panel.

[0045] Specifically, the first display panel and the second display panel in the present embodiment may include a plurality of pixel units, each of which may include at least two sub-pixels of different colors. For ease of description, the pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors as an example, and the colors of the three may be red, green, and blue, respectively. Therefore, the above-mentioned plurality of monochrome images may include a plurality of first monochrome images corresponding to the color of the first sub-pixel (i.e., the grayscale values ​​of both the second sub-pixel and the third sub-pixel are 0, and the corresponding grayscale values ​​of the plurality of first sub-pixels are respectively equal to different grayscale binding points), a plurality of second monochrome images corresponding to the color of the second sub-pixel (i.e., the grayscale values ​​of both the first sub-pixel and the third sub-pixel are 0, and the corresponding grayscale values ​​of the plurality of second sub-pixels are respectively equal to different grayscale binding points), and a plurality of third monochrome images corresponding to the color of the third sub-pixel (i.e., the grayscale values ​​of both the first sub-pixel and the second sub-pixel are 0, and the corresponding grayscale values ​​of the plurality of third sub-pixels are respectively equal to different grayscale binding points).

[0046] Correspondingly, in the first display panel, each monochrome picture can have corresponding first monochrome optical information, as shown in Table 1, R, G, and B represent the grayscale values ​​of the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively, wherein only part of the grayscale values ​​of each sub-pixel are listed as the corresponding grayscale binding points, for example, R equal to 255, 0, 128, 15, etc. can be used as the grayscale binding point of the first sub-pixel, G equal to 255, 0, 110, 189, etc. can be used as the grayscale binding point of the second sub-pixel, and B equal to 255, 0, 12, 111, etc. can be used as the grayscale binding point of the third sub-pixel. , wherein the pictures corresponding to a grayscale binding point of the first sub-pixel, a grayscale binding point of the second sub-pixel, and a grayscale binding point of the third sub-pixel (if the grayscale binding points of the two are equal to 0, it indicates that the picture is a monochrome picture, and if at least the grayscale binding points of the two are greater than 0, it indicates that the picture is a mixed color picture), each picture (monochrome picture or mixed color picture) has corresponding first optical information spec, specifically, the monochrome picture (such as the first 3 pictures in Table 1) has corresponding first monochrome optical information, and the mixed color picture (such as the 4th and 5th pictures in Table 1) has corresponding first mixed color optical information.

[0047] Table 1

[0048]

[0049] Further, the multiple monochrome pictures include multiple first monochrome pictures (R≠0, G=B=0) corresponding to multiple first grayscale binding points of the first sub-pixel (i.e., the value of R in Table 1), multiple second monochrome pictures (G≠0, R=B=0) corresponding to multiple second grayscale binding points of the second sub-pixel (i.e., the value of G in Table 1), and multiple third monochrome pictures (B≠0, G=R=0) corresponding to multiple third grayscale binding points of the third sub-pixel (i.e., the value of B in Table 1); correspondingly, the multiple first monochrome optical information include multiple first sub-optical information corresponding to multiple first monochrome pictures (i.e., multiple pure red pictures with different grayscale values ​​(multiple first grayscale binding points)), multiple second sub-optical information corresponding to multiple second monochrome pictures (i.e., multiple pure green pictures with different grayscale values ​​(multiple second grayscale binding points)), and multiple third sub-optical information corresponding to multiple third monochrome pictures (i.e., multiple pure blue pictures with different grayscale values ​​(multiple third grayscale binding points)). The plurality of first grayscale binding points, the plurality of second grayscale binding points and the plurality of third grayscale binding points may be the same or different.

[0050] It should be noted that the above picture can be understood as the grayscale value of the first sub-pixel in each pixel unit is equal, the grayscale value of the second sub-pixel in each pixel unit is equal, and the grayscale value of the third sub-pixel in each pixel unit is equal. The above multiple pictures can be pictures presented by the same area in the first display panel under multiple sets of corresponding R, G, B values, or pictures presented by the entire first display panel under multiple sets of corresponding R, G, B values.

[0051] Specifically, the first optical information may include the sum of the stimulus values ​​X of all first sub-pixels in the corresponding picture, the sum of the stimulus values ​​Y of all second sub-pixels (equal to the brightness Lv of the picture), and the sum of the stimulus values ​​Z of all third sub-pixels, where x is equal to X / (X+Y+Z) and y is equal to Y / (X+Y+Z). An area array imaging colorimeter may be used but is not limited to obtain the first optical information. The three stimulus values ​​and corresponding x, y, and Lv of each color sub-pixel in the area of ​​the first display panel may also be obtained.

[0052] S2, adjusting multiple second monochromatic optical information of the second display panel corresponding to the multiple monochromatic pictures according to multiple first monochromatic optical information to determine multiple corresponding monochromatic compensation coefficients, wherein the type of the first display panel is different from the type of the second display panel.

[0053] In combination with the above discussion, it can be known that in the first display panel, each first monochromatic optical information corresponds to a monochromatic picture, and the monochromatic picture has corresponding R, G, and B values. This step can be understood as adjusting at least one of the three based on the R, G, and B values ​​in the second display panel, thereby driving the second monochromatic optical information corresponding to the second display panel to change, until the difference between the second monochromatic optical information and the first monochromatic optical information is small or even equal, and dividing the R, G, and B values ​​of the second display panel at this time by the corresponding R, G, and B values ​​in the first display panel to obtain the corresponding monochromatic compensation coefficient.

[0054] Specifically, Figure 2 As shown, step S2 may include but is not limited to the following steps and a combination of the following steps.

[0055] S201, obtaining reference monochromatic optical information corresponding to reference grayscale binding points of a plurality of the first monochromatic optical information.

[0056] As discussed above, the multiple first monochrome optical information include multiple first sub-optical information corresponding to multiple first monochrome pictures (i.e. corresponding to multiple first grayscale binding points), and the first sub-optical information possessed by the first monochrome picture when the first grayscale binding point is equal to the first reference grayscale binding point can be considered as the first reference monochrome optical information; similarly, the multiple second monochrome optical information include multiple second sub-optical information corresponding to multiple second monochrome pictures (i.e. corresponding to multiple second grayscale binding points), and the second sub-optical information possessed by the second monochrome picture when the second grayscale binding point is equal to the second reference grayscale binding point can be considered as the second reference monochrome optical information; similarly, the multiple third monochrome optical information include multiple third sub-optical information corresponding to multiple third monochrome pictures (i.e. corresponding to multiple third grayscale binding points), and the third sub-optical information possessed by the third monochrome picture when the third grayscale binding point is equal to the third reference grayscale binding point can be considered as the third reference monochrome optical information.

[0057] Based on the above discussion, if Figure 3 As shown, step S201 may include but is not limited to the following steps and a combination of the following steps.

[0058] S2011, obtaining the (above-mentioned) first reference monochromatic optical information corresponding to the (first) reference grayscale binding point from the multiple first sub-optical information, obtaining the (above-mentioned) second reference monochromatic optical information corresponding to the (second) reference grayscale binding point from the multiple second sub-optical information, and obtaining the (above-mentioned) third reference monochromatic optical information corresponding to the (third) reference grayscale binding point from the multiple third sub-optical information.

[0059] Among them, the first reference grayscale binding point, the second reference grayscale binding point, and the third reference grayscale binding point can be collectively referred to as the reference grayscale binding point in step S201. Of course, all three can be equal (that is, multiple first grayscale binding points, multiple second grayscale binding points, and multiple third grayscale binding points all include reference grayscale binding points), for example, they can all be equal to the maximum grayscale value, and the maximum grayscale value can be 255. Similarly, the first reference monochromatic optical information, the second reference monochromatic optical information, and the third reference monochromatic optical information can be collectively referred to as the reference monochromatic optical information in step S201.

[0060] S202, obtaining a plurality of non-reference monochromatic optical information corresponding to a plurality of non-reference grayscale binding points of the plurality of first monochromatic optical information.

[0061] Different from the reference grayscale binding point, the first sub-optical information possessed by the multiple first monochrome images when the first grayscale binding point is equal to the multiple first non-reference grayscale binding points can be considered as the first non-reference monochrome optical information; similarly, the second sub-optical information possessed by the multiple second monochrome images when the second grayscale binding point is equal to the multiple second non-reference grayscale binding points can be considered as the second non-reference monochrome optical information; similarly, the third sub-optical information possessed by the multiple third monochrome images when the third grayscale binding point is equal to the multiple third non-reference grayscale binding points can be considered as the third non-reference monochrome optical information.

[0062] Based on the above discussion, if Figure 3 As shown, step S202 may include but is not limited to the following steps and a combination of the following steps.

[0063] S2021, obtaining multiple first non-reference monochromatic optical information corresponding to the multiple non-reference grayscale binding points from the multiple first sub-optical information, obtaining multiple second non-reference monochromatic optical information corresponding to the multiple non-reference grayscale binding points from the multiple second sub-optical information, and obtaining multiple third non-reference monochromatic optical information corresponding to the multiple non-reference grayscale binding points from the multiple third sub-optical information.

[0064] Among them, the multiple first non-reference grayscale binding points, the multiple second non-reference grayscale binding points, and the multiple third non-reference grayscale binding points can be collectively referred to as the multiple non-reference grayscale binding points in step S202. Of course, all three can be equal (that is, the multiple first grayscale binding points, the multiple second grayscale binding points, and the multiple third grayscale binding points all include multiple non-reference grayscale binding points). Similarly, the multiple first non-reference monochromatic optical information, the multiple second non-reference monochromatic optical information, and the multiple third non-reference monochromatic optical information can be collectively referred to as the multiple non-reference monochromatic optical information in step S202.

[0065] S203: Determine a plurality of monochromatic compensation coefficients according to the reference monochromatic optical information and a plurality of non-reference monochromatic optical information.

[0066] Specifically, each color sub-pixel may have corresponding multiple monochrome compensation coefficients, and the multiple monochrome compensation coefficients of each color sub-pixel may be determined based on at least the first reference monochrome optical information, the second reference monochrome optical information, and the third reference monochrome optical information.

[0067] Furthermore, the multiple monochrome compensation coefficients corresponding to the first sub-pixel can also be determined according to the multiple first non-reference monochrome optical information respectively possessed by the multiple first monochrome pictures of the multiple first non-reference grayscale binding points, the multiple monochrome compensation coefficients corresponding to the second sub-pixel can also be determined according to the multiple second non-reference monochrome optical information respectively possessed by the multiple second monochrome pictures of the multiple second non-reference grayscale binding points, and the multiple monochrome compensation coefficients corresponding to the third sub-pixel can also be determined according to the multiple third non-reference monochrome optical information respectively possessed by the multiple third monochrome pictures of the multiple third non-reference grayscale binding points.

[0068] Among them, Figure 4 As shown, step S203 may include but is not limited to the following steps and a combination of the following steps.

[0069] S2031, determining a reference monochromatic compensation coefficient corresponding to the reference grayscale binding point according to the reference monochromatic optical information and the to-be-calibrated monochromatic optical information of the second display panel corresponding to the reference grayscale binding point.

[0070] For the convenience of description, here we only take the first reference grayscale binding point, the second reference grayscale binding point, and the third reference grayscale binding point as an example, which are all equal to the same reference grayscale binding point (255). Then, the reference monochromatic optical information here includes the first reference monochromatic optical information R of the first monochromatic picture at the reference grayscale binding point. LCD255 , the second reference monochromatic optical information G of the second monochromatic picture at the reference grayscale binding point LCD255 , the third reference monochrome optical information B of the third monochrome picture at the reference grayscale binding point LCD255 .

[0071] Correspondingly, the monochromatic optical information to be calibrated of the second display panel corresponding to the reference grayscale binding point may also include the first monochromatic optical information to be calibrated R of the first sub-pixel at the reference grayscale binding point (255) LED255 , the second monochromatic optical information G to be calibrated of the second sub-pixel at the reference grayscale binding point (255) LED255 , the third monochromatic optical information B to be calibrated of the third sub-pixel at the reference grayscale binding point (255) LED255 .

[0072] It is understandable that, due to the difference between the monochromatic optical information to be calibrated of the second display panel and the reference monochromatic optical information of the first display panel, the corresponding reference monochromatic compensation coefficient needs to be used to process the monochromatic optical information to be calibrated so that it can be consistent with the reference monochromatic optical information. Of course, the reference monochromatic compensation coefficient may also include the reference monochromatic compensation coefficients K corresponding to the three sub-pixels in the first monochromatic image at the reference grayscale binding point. rr , K rg , K rb , the reference monochrome compensation coefficients K corresponding to the three sub-pixels in the second monochrome image under the reference grayscale binding point gr , K gg , K gb , the reference monochrome compensation coefficients K corresponding to the three sub-pixels in the third monochrome image under the reference grayscale binding point br , K bg , K bb .

[0073] For ease of understanding, the base monochrome compensation coefficient can be determined by the following three formulas:

[0074] R LCD255 =K rr *R LED255 +K rg *G LED255 +K rb *B LED255 ;

[0075] G LCD255 =K gr *R LED255 +K gg *G LED255 +K gb *B LED255 ;

[0076] B LCD255 =K br *R LED255 +K bg *G LED255 +K bb *B LED255 ;

[0077] Among them, the reference monochromatic optical information of the middle area or the entire area of ​​the first display panel can be used as a reference, and different areas of the second display panel can be debugged with the same standard; of course, the area corresponding to each area in Table 2 in the first display panel can also be used as a reference, and different areas in the second display panel can be debugged with their own standards.

[0078] Table 2

[0079] Location R-Lv Rx R G-Lv Gx Gy B-Lv Bx By 1 90.1435 0.688478 0.311522 445.427 0.21125 0.740108 35.2843 0.1142898 0.040419 2 72.5916 0.685521 0.314479 403.487 0.210688 0.740188 33.1825 0.143325 0.039204 3 95.1927 0.688444 0.311555 440.89 0.209157 0.740591 36.1723 0.142655 0.039214 4 98.7964 0.686864 0.313136 428.915 0.214733 0.739156 36.8433 0.141697 0.03902 5 92.2992 0.687813 0.312186 422.385 0.215702 0.737309 36.983 0.142475 0.038547 … … … … … … … … … …

[0080] Specifically, the corresponding area on the second panel can be obtained by using, but not limited to, a camera. LED255 , G LED255 , B LED255 Due to the difference in distance between different regions (positions) and the driver chip, as shown in Table 2, different positions (for example, at least including positions 1 to 5) are located at R LED255 , G LED255 , B LED255 The monochromatic optical information to be calibrated is different from that in the present embodiment. The monochromatic optical information to be calibrated may include the brightness R-Lv, the corresponding first component Rx and the corresponding second component Ry of the first sub-pixel in the area, the brightness G-Lv, the corresponding first component Gx and the corresponding second component Gy of the second sub-pixel in the area, and the brightness B-Lv, the corresponding first component Bx and the corresponding second component By of the third sub-pixel in the area.

[0081] Specifically, each reference monochromatic compensation coefficient here can reflect the adjustment of the brightness and chromaticity of the corresponding monochromatic optical information to be calibrated. That is:

[0082] On the one hand, the sum of the brightness R-Lv of the first sub-pixel, the brightness G-Lv of the second sub-pixel, and the brightness B-Lv of the third sub-pixel in the corresponding area of ​​the second display panel in Table 2 needs to be equal to the sum of the three brightness values ​​corresponding to the first three images in the corresponding area of ​​the first display panel in Table 1;

[0083] On the other hand, Rx and Ry of the corresponding area of ​​the second display panel in Table 2 need to be equal to the sum of x's of the first sub-pixels in the corresponding area of ​​the first display panel in the first three pictures in Table 1 (not shown in Table 1) and the sum of y's of the first sub-pixels (not shown in Table 1), Gx and Gy of the corresponding area of ​​the second display panel in Table 2 need to be equal to the sum of x's of the second sub-pixels in the corresponding area of ​​the second display panel in the first three pictures in Table 1 (not shown in Table 1) and the sum of y's of the second sub-pixels (not shown in Table 1), and Bx and By of the corresponding area of ​​the second display panel in Table 2 need to be equal to the sum of x's of the third sub-pixels in the corresponding area of ​​the first display panel in the first three pictures in Table 1 (not shown in Table 1) and the sum of y's of the third sub-pixels (not shown in Table 1).

[0084] S2032, determining at least one non-reference monochromatic compensation coefficient corresponding to the corresponding non-reference grayscale binding point according to the non-reference monochromatic optical information and the non-reference monochromatic optical information, wherein the reference monochromatic compensation coefficient and the plurality of non-reference monochromatic compensation coefficients constitute a plurality of monochromatic compensation coefficients.

[0085] Following the example of step S20321, the first non-reference grayscale binding point, the second non-reference grayscale binding point, and the third non-reference grayscale binding point can be selected from other grayscale binding points that are not different from the reference grayscale binding point (255). Then, each non-reference monochromatic optical information here may include the first non-reference monochromatic optical information R of the first monochromatic picture at the corresponding non-reference grayscale binding point (e.g., equal to 128). LCD128 , the second non-reference monochromatic optical information G of the second monochromatic picture LCD128 , the third non-reference monochromatic optical information B of the third monochromatic picture LCD128 .

[0086] It can be understood that the chromaticity difference of the monochrome images corresponding to the same color sub-pixel is small, and only the brightness difference exists. For example, the reference monochrome compensation coefficient of the monochrome optical information to be calibrated can be multiplied by a grayscale compensation coefficient K. gray To obtain the corresponding non-reference monochrome compensation coefficient, a second monochrome picture (the second non-reference monochrome optical information G LCD128 ) as an example, the corresponding grayscale compensation coefficient K gray It can be determined by the following formula:

[0087] G LCD128 =K gray *(K br *R LED255 +K bg *G LED255 +K bb *B LED255 );

[0088] That is, it can be considered here that in B LCD255 Based on the brightness of the medium, multiply the grayscale compensation coefficient K synchronously gray The brightness displayed after that is equal to the G of the first display panel. LCD128 By analogy, the monochrome compensation coefficient corresponding to the reference grayscale binding point in the first sub-pixel may include the above K rr , K rg , K rb The monochrome compensation coefficient corresponding to each non-reference grayscale binding point in the first sub-pixel may include the above K rr , K rg , K rb And the corresponding K gray The monochrome compensation coefficient corresponding to the reference grayscale binding point in the first sub-pixel and the monochrome compensation coefficient corresponding to each non-reference grayscale binding point can also be explained in the same way. The monochrome compensation coefficient corresponding to the reference grayscale binding point in the third sub-pixel and the monochrome compensation coefficient corresponding to each non-reference grayscale binding point can also be explained in the same way.

[0089] Of course, if we consider the chromaticity difference of the monochrome picture corresponding to the same color sub-pixel, then we can think that LCD255 Based on the brightness of the br , K bg , K bb Need to be multiplied by the corresponding grayscale compensation coefficient K respectively gray1 , K gray2 , K gray3 The brightness displayed after that is equal to the G of the first display panel. LCD128 The brightness in, that is, for example, the monochrome compensation coefficient corresponding to each non-reference grayscale binding point in the third sub-pixel may include the above K br , K bg , K bb And the corresponding K gray1 , K gray2 , K gray3 .

[0090] In summary, through steps S20321 to S20322, multiple sets of monochrome compensation coefficients corresponding to multiple (first) grayscale binding points of the first sub-pixel can be obtained, except that the reference grayscale binding point corresponds to K rr , K rg , K rb These three monochrome compensation coefficients, each other non-reference grayscale binding point corresponds to K rr , K rg , K rb These three monochrome compensation coefficients plus at least one grayscale compensation coefficient K gray Similarly, multiple sets of monochrome compensation coefficients corresponding to multiple (second) grayscale binding points of the second sub-pixel can be obtained, except that the reference grayscale binding point corresponds to K gr , K gg , K gb These three monochrome compensation coefficients, each other non-reference grayscale binding point corresponds to K gr , K gg , K gb These three monochrome compensation coefficients plus at least one grayscale compensation coefficient K gray Similarly, multiple sets of monochrome compensation coefficients corresponding to multiple (third) grayscale binding points of the third sub-pixel can be obtained, except that the reference grayscale binding point corresponds to K br , K bg , K bb These three monochrome compensation coefficients, each other non-reference grayscale binding point corresponds to K br , K bg , K bb These three monochrome compensation coefficients plus at least one grayscale compensation coefficient K gray .

[0091] Furthermore, a set of monochrome compensation coefficients corresponding to all non-grayscale binding points other than the grayscale binding point of each color sub-pixel can be determined by linear interpolation, thereby obtaining a set of monochrome compensation coefficients for each color sub-pixel at each grayscale.

[0092] S3, obtaining an initial grayscale value of the second display panel, and determining a corresponding target grayscale value according to the plurality of single-color compensation coefficients and the initial grayscale value.

[0093] It can be understood that each initial grayscale value may include a first sub-initial grayscale value corresponding to the first sub-pixel, a second sub-initial grayscale value corresponding to the second sub-pixel, and a third sub-initial grayscale value corresponding to the third sub-pixel. A corresponding set of monochrome compensation coefficients can be obtained in the corresponding color sub-pixel according to the numerical value of each. The three sets of monochrome compensation coefficients corresponding to the three sub-pixels are applied to the initial grayscale value to determine the corresponding target grayscale value. Accordingly, the target grayscale value may also include a first sub-target grayscale value corresponding to the first sub-pixel, a second sub-target grayscale value corresponding to the second sub-pixel, and a third sub-target grayscale value corresponding to the third sub-pixel.

[0094] For example, the three sub-initial grayscale values ​​in the initial grayscale value are 255, 128, and 128 respectively. Through this step, the corresponding three sub-target grayscale values ​​can be calculated to be 218, 125, and 120 respectively. It can be considered that the optical information corresponding to the three sub-target grayscale values ​​in the second display panel can be close to or even equal to the optical information corresponding to the three sub-initial grayscale values ​​in the first display panel (also referred to as the first mixed color optical information here).

[0095] Further, such as Figure 5 As shown, step S3 may include but is not limited to the following steps and a combination of the following steps.

[0096] S31, determining a grayscale value to be verified corresponding to the second display panel according to the plurality of single-color compensation coefficients and the initial grayscale value.

[0097] Among them, the method for determining the grayscale value to be verified here can refer to the method for determining the corresponding target grayscale value in step S3 above. Based on the example of step S3, the optical information corresponding to the grayscale values ​​of the three sub-pixels in the second display panel are 218, 125, and 120 respectively, which is called the second mixed color optical information here.

[0098] S32, obtaining first color mixing optical information corresponding to the first display panel in the color mixing picture corresponding to the initial grayscale value.

[0099] As shown in Table 1, for example, the 4th and 5th pictures are mixed color pictures, corresponding to the first mixed color optical information. The three sub-initial grayscale values ​​in the initial grayscale value are 255, 128, and 128 respectively, and the optical information corresponding to the grayscale values ​​of the three sub-pixels in the first display panel are 255, 128, and 128 respectively can also be measured, which is also referred to as the first mixed color optical information here.

[0100] S33, adjusting the grayscale value to be verified according to the first color-mixing optical information to adjust the second color-mixing optical information of the second display panel corresponding to the color-mixing picture to determine the target grayscale value.

[0101] Specifically, in this embodiment, based on the grayscale value to be verified determined according to multiple single-color compensation coefficients and the initial grayscale value (calculated), the first mixed-color optical information corresponding to the mixed-color picture in the first display panel is further used as a reference to adjust the grayscale value to be verified (three sub-grayscale values ​​to be verified corresponding to the three sub-pixels, respectively), until the second mixed-color optical information in the second display panel at this time can be close to or even the same as the first mixed-color optical information in the first display panel, and the grayscale value to be verified at this time is the target grayscale value.

[0102] It can be understood that in this embodiment, the initial grayscale value is roughly adjusted based on the single-color compensation coefficient as the first adjustment basis to obtain the grayscale value to be verified, which can quickly determine that the corresponding second mixed-color optical information is close to the grayscale value to be verified of the first mixed-color optical information. Furthermore, the initial grayscale value is fine-tuned based on the first mixed-color optical information as the second adjustment basis to obtain the target grayscale value, thereby improving the accuracy of the target grayscale value.

[0103] The present invention provides a display device, comprising the first display panel and the second display panel, and configured to drive the second display panel to emit light according to any target grayscale value as described above.

[0104] Furthermore, the display device may also be used to execute any of the methods for generating a target grayscale value of a spliced ​​screen as described above, and the above method may be implemented by executing program instructions by a controller in the display device.

[0105] Of course, the present invention may also provide a target grayscale value generation device, which is used to execute program instructions to implement any of the above-mentioned methods for generating the target grayscale value of the spliced ​​screen.

[0106] The present invention provides a method for generating a target grayscale value of a spliced ​​screen, equipment therefor, and a display device. The method comprises obtaining a plurality of first monochromatic optical information corresponding to a first display panel under a plurality of monochromatic images, and adjusting a plurality of second monochromatic optical information corresponding to a plurality of the monochromatic images of a second display panel according to the plurality of first monochromatic optical information to determine a plurality of corresponding monochromatic compensation coefficients, further obtaining an initial grayscale value of the second display panel, and determining a corresponding target grayscale value according to the plurality of monochromatic compensation coefficients and the initial grayscale value, that is, adjusting parameters in the second display panel based on the first monochromatic optical information of the first display panel to obtain second monochromatic optical information that can match the first monochromatic optical information, thereby determining the monochromatic compensation coefficient, thereby achieving optical compensation for the second display panel, and improving the uniformity of the screen display of the spliced ​​screen.

[0107] The target compensation ratio, determination method, device and display device provided in the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for generating a target grayscale value of a spliced ​​screen, characterized in that: include: Acquire a plurality of first monochromatic optical information corresponding to the first display panel under a plurality of monochromatic images; According to the plurality of first monochromatic optical information, adjusting the plurality of second monochromatic optical information of the second display panel corresponding to the plurality of monochromatic pictures to determine the corresponding plurality of monochromatic compensation coefficients, wherein the type of the first display panel is different from the type of the second display panel; An initial grayscale value of the second display panel is acquired, and a corresponding target grayscale value is determined according to the plurality of single-color compensation coefficients and the initial grayscale value.

2. The method for generating a target grayscale value of a spliced ​​screen according to claim 1, characterized in that: The first display panel and the second display panel include a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors; The plurality of monochrome pictures include a plurality of first monochrome pictures corresponding to a plurality of first grayscale binding points of the first sub-pixel, a plurality of second monochrome pictures corresponding to a plurality of second grayscale binding points of the second sub-pixel, and a plurality of third monochrome pictures corresponding to a plurality of third grayscale binding points of the third sub-pixel; The plurality of first monochromatic optical information include a plurality of first sub-optical information corresponding to the plurality of first monochromatic pictures, a plurality of second sub-optical information corresponding to the plurality of second monochromatic pictures, and a plurality of third sub-optical information corresponding to the plurality of third monochromatic pictures.

3. The method for generating a target grayscale value of a spliced ​​screen according to claim 2, characterized in that: The step of adjusting the second monochromatic optical information of the second display panel corresponding to the plurality of monochromatic pictures according to the plurality of first monochromatic optical information to determine the corresponding plurality of monochromatic compensation coefficients comprises: Acquire reference monochromatic optical information corresponding to reference grayscale binding points of a plurality of the first monochromatic optical information; Acquire a plurality of non-reference monochromatic optical information corresponding to a plurality of non-reference grayscale binding points of the plurality of first monochromatic optical information; A plurality of monochromatic compensation coefficients are determined according to the reference monochromatic optical information and the plurality of non-reference monochromatic optical information.

4. The method for generating a target grayscale value of a spliced ​​screen according to claim 3, characterized in that: The plurality of first grayscale binding points, the plurality of second grayscale binding points and the plurality of third grayscale binding points all include the reference grayscale binding point; The step of obtaining the reference monochromatic optical information corresponding to the reference grayscale binding point of the plurality of the first monochromatic optical information comprises: The first reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple first sub-optical information, the second reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple second sub-optical information, and the third reference monochromatic optical information corresponding to the reference grayscale binding point is obtained from the multiple third sub-optical information.

5. The method for generating a target grayscale value of a spliced ​​screen according to claim 3 or 4, characterized in that: The plurality of first grayscale binding points, the plurality of second grayscale binding points and the plurality of third grayscale binding points all include a plurality of non-reference grayscale binding points; The step of obtaining a plurality of non-reference monochromatic optical information corresponding to a plurality of non-reference grayscale binding points of the plurality of first monochromatic optical information comprises: A plurality of first non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of first sub-optical information, a plurality of second non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of second sub-optical information, and a plurality of third non-reference monochromatic optical information corresponding to the plurality of non-reference grayscale binding points is obtained from the plurality of third sub-optical information.

6. The method for generating a target grayscale value of a spliced ​​screen according to claim 3, characterized in that: The step of determining the plurality of monochromatic compensation coefficients according to the reference monochromatic optical information and the plurality of non-reference monochromatic optical information comprises: Determining a reference monochromatic compensation coefficient corresponding to the reference grayscale binding point according to the reference monochromatic optical information and the to-be-calibrated monochromatic optical information of the second display panel corresponding to the reference grayscale binding point; According to the non-reference monochromatic optical information and the non-reference monochromatic optical information, at least one non-reference monochromatic compensation coefficient corresponding to the corresponding non-reference grayscale binding point is determined, and the reference monochromatic compensation coefficient and multiple non-reference monochromatic compensation coefficients constitute multiple monochromatic compensation coefficients.

7. The method for generating a target grayscale value of a spliced ​​screen according to claim 1, characterized in that: The step of obtaining the initial grayscale value of the second display panel and determining the corresponding target grayscale value according to the plurality of single-color compensation coefficients and the initial grayscale value comprises: Determining a grayscale value to be verified corresponding to the second display panel according to the plurality of single-color compensation coefficients and the initial grayscale value; Acquire first color mixing optical information corresponding to the first display panel under the color mixing picture corresponding to the initial grayscale value; According to the first color-mixing optical information, the grayscale value to be verified is adjusted to adjust the second color-mixing optical information of the second display panel corresponding to the color-mixing picture, so as to determine the target grayscale value.

8. A display device, characterized in that: The device comprises the first display panel and the second display panel as claimed in any one of claims 1 to 7 which are spliced ​​together and used for driving the second display panel to emit light according to the target grayscale value as claimed in any one of claims 1 to 7.

9. The display device according to claim 8, wherein: include: A controller, wherein the controller is used to execute program instructions to implement the method for generating a target grayscale value of a spliced ​​screen as described in any one of claims 1 to 7.

10. A device for generating a target grayscale value, characterized in that: Used to execute program instructions to implement the method for generating a target grayscale value of a spliced ​​screen as described in any one of claims 1 to 7.

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