Display panel compensation parameter determination method and apparatus, and display panel

Abstract

The display panel compensation parameter determination method and device and the display panel provided by the present application only need to obtain chrominance data of a display panel displaying red, green and blue images, and first luminance data of the display panel displaying a white image at a target gray scale, and then the second luminance data of the display panel displaying the three colors of red, green and blue images at the target gray scale can be calculated, and then the luminance compensation values corresponding to each red sub-pixel, green sub-pixel and blue sub-pixel at the target gray scale are obtained. By directly and accurately compensating the red, green and blue luminance components in the white image, the coupling phenomenon among the luminance of the three primary colors when displaying the white image can be effectively avoided, so that the luminance uniformity of the white image is significantly improved, and the image correction and compensation effect of the display panel is optimized.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and more specifically, to a method, apparatus and display panel for determining display panel compensation parameters. Background Technology

[0002] During the manufacturing process of display panels, errors in process materials or circuit trace impedance can cause light-emitting devices at different locations to emit light with varying brightness under the same driving current, resulting in an overall brightness uniformity (mura) defect on the screen. Therefore, it is necessary to test the display panel to determine the brightness compensation parameters for each light-emitting device, in order to fine-tune the driving current of the light-emitting devices when driving them to emit light, thereby improving the uniformity of the display panel's brightness.

[0003] Existing methods for determining display panel brightness compensation parameters typically require sampling the brightness and chromaticity of red, green, and blue sub-pixels at different grayscale levels to determine the corresponding compensation parameters. This necessitates performing numerous brightness and chromaticity sampling operations. Furthermore, different color sub-pixels may exhibit brightness variation coupling due to issues such as voltage correlation. Even after addressing the issue of uneven monochromatic brightness among red, green, and blue sub-pixels, uneven white light display may still occur when they emit light simultaneously due to brightness coupling. Summary of the Invention

[0004] In order to at least overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a method for determining display panel compensation parameters, including:

[0005] The chromaticity data corresponding to the display panel displaying red, green, and blue images are obtained respectively; the red image is displayed when the red sub-pixel of the display panel emits light, the green image is displayed when the green sub-pixel of the display panel emits light, and the blue image is displayed when the blue sub-pixel of the display panel emits light.

[0006] Obtain the first brightness data of the display panel when displaying a white image at the target grayscale;

[0007] Based on the chromaticity data and the first brightness data, a second brightness data is determined for the display panel to display red, green, and blue images at the target grayscale.

[0008] The brightness compensation value corresponding to each of the red sub-pixels, the green sub-pixels and the blue sub-pixels at the target gray level is determined based on the second brightness data.

[0009] In one possible implementation, the step of acquiring the chromaticity data corresponding to the display panel displaying red, green, and blue images respectively includes:

[0010] Obtain the chromaticity data corresponding to the display panel displaying red, green and blue images at the highest grayscale.

[0011] In one possible implementation, the step of acquiring the chromaticity data corresponding to the display panel displaying red, green, and blue images respectively includes:

[0012] For multiple different display areas on the display panel, the chromaticity data corresponding to each display area when the display panel displays a red image, a green image, and a blue image is obtained respectively; each display area includes multiple pixels;

[0013] The step of obtaining the first brightness data of the display panel displaying a white image at the target grayscale includes:

[0014] Acquire the first brightness data of each pixel when the display panel displays a white image at the target grayscale;

[0015] The step of determining the second brightness data for the display panel to display red, green, and blue images at the target grayscale based on the chromaticity data and the first brightness data includes:

[0016] For each pixel, based on the chromaticity data corresponding to the display area where the pixel is located and the first luminance data corresponding to the pixel, the second luminance data corresponding to each sub-pixel of the pixel in the target grayscale is determined.

[0017] In one possible implementation, the step of acquiring the chromaticity data corresponding to each display area when the display panel displays red, green, and blue images includes:

[0018] For each of the display areas, when the display panel displays a red image, a green image, and a blue image, the average chromaticity value of that display area is obtained as the chromaticity data corresponding to that display area.

[0019] In one possible implementation, the step of acquiring the chromaticity data corresponding to the display panel displaying red, green, and blue images respectively includes:

[0020] The color coordinates in the Yxy color space corresponding to the red, green, and blue images displayed on the display panel are obtained respectively and used as the chromaticity data.

[0021] In one possible implementation, the step of determining second brightness data for the display panel to display red, green, and blue images at a target grayscale based on the chromaticity data and the first brightness data includes:

[0022] The second brightness data corresponding to the red, green, and blue images is calculated using the following formula:

[0023]

[0024] Among them, Y rwn Y gwn Y bwn These are the second brightness data of the red, green, and blue images at the target grayscale; Y wn The first brightness data; x w y w z w These are the color coordinates that guarantee the chromaticity data of the white image; x rw y rw and z rw These are the chromaticity coordinates representing the chromaticity data of a red image, x and y. gw y gw and z gw These are the chromaticity coordinates representing the chromaticity data of the green image, x and x'. bw y bw and z bw These are the color coordinates representing the chromaticity data of the blue image.

[0025] In one possible implementation, the step of acquiring the first brightness data of the display panel displaying a white image at the target grayscale includes:

[0026] The first brightness data of the display panel displaying a white image at multiple different target grayscale levels are obtained respectively;

[0027] The step of determining the second brightness data for the display panel to display red, green, and blue images at the target grayscale based on the chromaticity data and the first brightness data includes:

[0028] For each of the multiple different target gray levels, the second brightness data for displaying red, green and blue images on the display panel is determined based on the chromaticity data and the first brightness data corresponding to the target gray level.

[0029] This application also provides a device for determining display panel compensation parameters, comprising:

[0030] The first acquisition module is used to acquire the chromaticity data corresponding to the display panel displaying red, green and blue images respectively; the red image is displayed when the red sub-pixel of the display panel emits light, the green image is displayed when the green sub-pixel of the display panel emits light, and the blue image is displayed when the blue sub-pixel of the display panel emits light.

[0031] The second acquisition module is used to acquire the first brightness data of the display panel displaying a white image at the target grayscale.

[0032] The first determining module determines, based on the chromaticity data and the first brightness data, the second brightness data for the display panel to display red, green and blue images at the target grayscale.

[0033] The second determining module determines the compensation value corresponding to each of the red sub-pixels, the green sub-pixels and the blue sub-pixels at the target grayscale based on the second brightness data.

[0034] This application also provides a display panel debugging device, including a machine-readable storage medium and a processor. The machine-readable storage medium stores machine-executable instructions, which, when executed by the processor, implement the display panel compensation parameter determination method described in any of the preceding claims.

[0035] This application also provides a display panel that stores a compensation value determined by any of the methods described above.

[0036] Compared with the prior art, this application has the following beneficial effects:

[0037] This application provides a method, apparatus, and display panel for determining compensation parameters of a display panel. By separating chromaticity data and luminance data, and based on the chromaticity data corresponding to the display panel when displaying red, green, and blue images, and the first luminance data for displaying a white image at a target grayscale, a second luminance data for displaying red, green, and blue images at the target grayscale is calculated. Then, based on the second luminance data, the luminance compensation value corresponding to each red, green, and blue sub-pixel at the target grayscale is determined. This reduces the number of chromaticity data acquisition operations, and since the calculation process itself is based on the luminance when displaying a white image, it ensures the uniformity of white light display when all color sub-pixels emit light together after compensation. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a flowchart illustrating the display panel provided in this embodiment;

[0040] Figure 2 This is a schematic diagram of the pixels and display area of ​​the display panel provided in this embodiment;

[0041] Figure 3 A schematic diagram of the structure of the device for determining the compensation parameters of the display panel provided in this embodiment;

[0042] Figure 4 This is a schematic diagram of the structure of the debugging device for the display panel provided in this embodiment.

[0043] Icons: 110 - Display area; 120 - Pixel; 800 - Display panel debugging device; 810 - Processor; 820 - Machine-readable storage medium; 830 - Display panel compensation parameter determination method; 831 - First acquisition module; 832 - Second acquisition module; 833 - First determination module; 834 - Second determination module. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0051] The solution provided in this embodiment will be described in detail below.

[0052] This application provides a method for determining compensation parameters for a display panel, the method comprising the following steps.

[0053] Step S11: Obtain the chromaticity data corresponding to the display panel displaying red, green, and blue images respectively; when the red sub-pixel of the display panel emits light, the red image is displayed; when the green sub-pixel of the display panel emits light, the green image is displayed; and when the blue sub-pixel of the display panel emits light, the blue image is displayed.

[0054] In this embodiment, optical data acquisition devices can be used to acquire chromaticity data corresponding to red, green, and blue images displayed on the display panel in monochrome display mode. This chromaticity data can include the chromaticity data values ​​corresponding to each sub-pixel or region of the display panel in monochrome display mode.

[0055] Specifically, the display panel includes multiple pixels, and each pixel may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

[0056] When only the red sub-pixels of each pixel emit light, the image displayed on the display panel is a red image; when only the green sub-pixels of each pixel emit light, the image displayed on the display panel is a green image.

[0057] When only the blue sub-pixels in each pixel emit light, the image displayed on the display panel is a blue image.

[0058] Step S12: Obtain the first brightness data of the white image displayed on the display panel at the target grayscale.

[0059] In this embodiment, for the target grayscale where compensation parameters need to be determined, the first brightness data of the display panel displaying a white image at the target grayscale can be acquired by an optical data acquisition device. This first brightness data may include the brightness value of each pixel or region when the three primary color sub-pixels of each pixel in the display panel emit light simultaneously to synthesize a white image.

[0060] Specifically, when the red, green, and blue sub-pixels in each pixel emit light simultaneously, the image displayed on the display panel is a white image.

[0061] Step S13: Based on the chromaticity data and the first luminance data, determine the second luminance data for the display panel to display red, green, and blue images at the target grayscale.

[0062] In this embodiment, the acquisition process of separating luminance data and chrominance data involves the following steps: In step S12, for the target grayscale, only the first luminance data when displaying the light and color image is acquired; luminance data acquisition is no longer performed separately for the red, green, and blue images. Then, based on the chrominance data acquired in step S11 and the first luminance data acquired in step S12, the second luminance data for displaying the red, green, and blue images at the target grayscale is calculated.

[0063] Specifically, the white image displayed on the display panel and the tristimulus values ​​of its three primary color components have the following relationship: the tristimulus values ​​refer to the components of the three colors that synthesize white light in the XYZ color system.

[0064]

[0065] Where X w Y w and Z w X represents the tristimulus values ​​of the white image. rw Y rw and Z rw X represents the tristimulus values ​​of the red image used to synthesize the white image, respectively.gw Y gw and Z gw X represents the tristimulus values ​​of the green image synthesized from the white image. bw Y bw and Z bw These are the tristimulus values ​​of the blue image used to synthesize the white image.

[0066] The tristimulus values ​​XYZ and Yxy in the color space have the same Y value, both representing luminance. The following conversion relationship exists between the tristimulus values ​​and Yxy:

[0067]

[0068] Substituting (2) into (1) yields:

[0069]

[0070] From (3), we can deduce:

[0071]

[0072] Among them, Y rw Y gw Y bw These are the second brightness data for the red, green, and blue images, respectively; Y wn The first brightness data; x w y w z w These are the color coordinates that guarantee the chromaticity data of the white image; x rw y rw and z rw These are the chromaticity coordinates representing the chromaticity data of a red image, x and y. gw y gw and z gw These are the chromaticity coordinates representing the chromaticity data of the green image, x and x'. bw y bw and z bw These are the color coordinates representing the chromaticity data of the blue image.

[0073] Since only the brightness of the three primary color components is coupled when displaying a white image, the chromaticity is not affected. Therefore, the color coordinates of the red, green, and blue components in a white image are equal to the color coordinates of the red, green, and blue images when displayed in monochrome.

[0074] Based on this, for any sub-pixel, the second brightness data corresponding to the sub-pixel of the red, green and blue image can be obtained by using any first brightness data of the white image under the target grayscale and the chromaticity data of the red, green and blue images. The compensation parameters of the display panel can be further obtained through the second brightness data.

[0075]

[0076] Furthermore, for the second brightness data of subpixels in red, green, and blue images at different gray levels, we can have formula (5). In formula (5), the subscript n represents different gray levels, i.e., Y... rwn Y gwn Y bwn These are the second brightness data for the red, green, and blue images at a grayscale of n. For example, the first brightness data for a white image at grayscales of 32, 64, 128, and 224 can be obtained, and finally, the second brightness data for displaying red, green, and blue images at grayscales of 32, 64, 128, and 224 can be obtained by combining the chromaticity data of the red, green, and blue images.

[0077] Furthermore, based on the above derivation process, in step S11, the color coordinates in the Yxy color space corresponding to the red, green and blue images displayed on the display panel are obtained as the chromaticity data.

[0078] Specifically, the chromaticity data corresponding to the display panel displaying red, green, and blue images can be obtained through measurements in the Yxy color space. In the Yxy color space, the Y value representing luminance, and the x and y chromaticity coordinates describing hue and saturation can be measured. Since the luminance of the three primary colors is coupled when displaying a white image, but their chromaticity does not affect each other, the chromaticity of the display panel when displaying red, green, and blue images can be directly measured for subsequent calculations and analysis. This approach, based on the independence of chromaticity and luminance, ensures the accuracy of the chromaticity data, unaffected by changes in luminance.

[0079] It is worth noting that other chromaticity data of subpixels can also be collected and converted into x and y chromaticity coordinates in the Yxy color space.

[0080] Step S14: Determine the brightness compensation value corresponding to each red sub-pixel, green sub-pixel and blue sub-pixel under the target grayscale based on the second brightness data.

[0081] In this step, after determining the second brightness data of each sub-pixel for displaying red, green, and blue images at the target grayscale, the compensation value corresponding to each sub-pixel at the target grayscale can be determined based on the second brightness data. The luminance compensation of each sub-pixel based on the compensation value can improve the brightness uniformity of monochrome display at the target grayscale.

[0082] At the same time, since each pixel of a white image is composed of sub-pixels that display red, green and blue, improving the brightness uniformity of monochrome display at the target grayscale can also improve the brightness uniformity of white image display at the target grayscale.

[0083] In this embodiment, by acquiring the chromaticity data of the red, green, and blue images displayed on the display panel, and the first luminance data of each pixel displaying a white image at the target grayscale, the second luminance data of each pixel displaying the three colors of the red, green, and blue images at the target grayscale can be calculated. This allows for the determination of the compensation values ​​corresponding to each red, green, and blue sub-pixel at the target grayscale. By directly compensating for the luminance of each sub-pixel, the coupling phenomenon between the luminance of the three primary colors when displaying a white image can be avoided, thereby significantly improving the brightness uniformity of the white image and optimizing the effect of the display panel image correction compensation.

[0084] In one possible implementation, in step S11, the chromaticity data corresponding to the display panel displaying red, green and blue images at the highest grayscale are obtained respectively.

[0085] In this embodiment, when acquiring chromaticity data, the display panel is selected to display red, green, and blue images at the highest grayscale level for acquisition. The highest grayscale level means that the display panel can display the most saturated colors, which allows the chromaticity measurement tool to more accurately capture the chromaticity characteristics of each color, thereby reducing chromaticity measurement errors caused by insufficient brightness and making chromaticity acquisition more accurate.

[0086] In one possible implementation, due to the small pixel size, the acquisition of chromaticity data for a single pixel is easily affected by the chromaticity data of surrounding pixels, leading to errors. This is especially true in Micro-LED or Mini LED display panels, where light-emitting devices need to be binned and mass transfer performed. The brightness difference between adjacent light-emitting devices in the same area may be significant, making it difficult for current optical data acquisition methods to perform accurate chromaticity data acquisition for each sub-pixel.

[0087] Therefore, in this embodiment, luminance data can be precisely collected for each pixel, while chrominance data can be collected in zones. Specifically, please refer to... Figure 2 In step S11, for multiple different display areas 110 on the display panel, the chromaticity data corresponding to each display area 110 when the display panel displays a red image, a green image, and a blue image are obtained respectively; each display area 110 includes multiple pixels 120, for example, in Figure 2 In the display area 110, each display area includes 4 pixels 120 in a 2*2 pattern.

[0088] By acquiring chromaticity data for each display area 110 when displaying red, green, and blue images separately, errors caused by inaccurate pixel-level chromaticity measurements can be reduced. Furthermore, partitioned acquisition significantly reduces memory usage because it stores only the key data for each area.

[0089] In step S12, the first brightness data of each pixel 120 is obtained when the display panel displays a white image at the target grayscale.

[0090] By acquiring each pixel 120 of the white image at the target grayscale level, it is beneficial to perform the subsequent point-by-point correction process. In point-by-point correction, the first brightness data of each pixel 120 is used to generate correction coefficients, which are then applied to the control system of the display panel to achieve compensation correction of the display panel image.

[0091] In step S13, for each pixel 120, based on the chromaticity data corresponding to the display area 110 where the pixel 120 is located and the first luminance data corresponding to the pixel 120, the second luminance data corresponding to each sub-pixel of the pixel 120 under the target grayscale is determined.

[0092] In this embodiment, based on the first luminance data of each pixel 110 collected point by point, and combined with the chromaticity data within each display area 120, luminance data of the red, green, and blue sub-pixels of the display panel when displaying a white image are further generated. These data are used to generate compensation parameters to compensate for the white image, thereby eliminating the influence of the three primary color luminance coupling on the white image compensation.

[0093] In one possible implementation, for each of the display areas, when the display panel displays a red image, a green image, and a blue image respectively, the average value of the chromaticity value of that display area is used as the chromaticity data corresponding to that display area.

[0094] Specifically, to obtain chromaticity data for each display area, the following steps can be taken. For example, clearly define the various display areas on the display panel, each containing multiple pixels; then, set the display panel to display a red image, and use a chromaticity measurement tool to measure the chromaticity value of each sub-pixel within the display area; then, repeat the above steps to measure the chromaticity value of each sub-pixel within each display area when displaying green and blue images. Finally, for each display area, calculate the average chromaticity value under red, green, and blue display conditions. These average values ​​will be used as the chromaticity data for that display area in subsequent calibration processes. Throughout the process, it is necessary to ensure the accuracy and stability of the chromaticity measurement tool, and control ambient light and temperature conditions to reduce external interference, thereby improving the accuracy and reliability of the results. By setting multiple display areas, errors caused by inaccurate pixel-level chromaticity measurements can be reduced, saving the acquisition time for brightness uniformity correction data and reducing storage space usage.

[0095] In one possible implementation, for different target gray levels, the first brightness data can be acquired and the second brightness data can be calculated separately.

[0096] Specifically, in step S12, the first brightness data of the white image displayed on the display panel at multiple different target gray levels can be obtained respectively.

[0097] In step S13, for each of the multiple different target gray levels, the second brightness data for displaying red, green and blue images on the display panel at the target gray level is determined based on the chromaticity data and the first brightness data corresponding to the target gray level.

[0098] In this embodiment, by acquiring the first brightness data corresponding to multiple different target gray levels, and the chromaticity data when the display panel displays red, green and blue images, the second brightness data of the display panel displaying red, green and blue images at different target gray levels can be obtained.

[0099] For example, the first brightness data of a white image at a grayscale of 32 can be obtained, and then combined with the chromaticity data of the red, green and blue images to obtain the second brightness data for displaying red, green and blue images at a grayscale of 32. When a pixel needs to display image data at a grayscale of 32, the brightness component compensation for displaying red, green and blue images at a grayscale of 32 can be obtained by looking up a table.

[0100] The first luminance data of a white image at a grayscale of 64 can be obtained. Finally, the second luminance data of red, green and blue images is obtained by combining the chromaticity data of red, green and blue images at a grayscale of 64. When a pixel needs to display image data at a grayscale of 64, the luminance component compensation when displaying red, green and blue images at a grayscale of 64 can be obtained by looking up a table.

[0101] Similarly, the solution provided in this embodiment can obtain the second brightness data corresponding to different gray levels and then perform brightness component compensation.

[0102] Furthermore, after obtaining the brightness compensation values ​​of red, green, and blue image sub-pixels at multiple target gray levels, interpolation techniques can be used to derive the brightness compensation parameters for red, green, and blue image sub-pixels covering all other gray levels besides the target gray level. For example, a spline curve can be plotted by interpolating the brightness compensation values ​​of each of the three primary color components of a white image measured at gray levels 32, 64, 128, and 224. Subsequently, points can be selected from the spline curve to obtain the brightness compensation parameters for other gray levels between 32 and 64 gray levels, between 64 and 128 gray levels, and between 128 and 224 gray levels, thereby correcting the brightness of each of the three primary color components of the white image at any other gray level. Based on this, a relatively dispersed target gray level is selected when choosing the target gray level.

[0103] This application also provides a device 830 for determining display panel compensation parameters, please refer to... Figure 3 The display panel compensation parameter determination device 830 includes multiple functional modules that can be stored in machine-readable storage medium 820 in software form. Functionally, the display panel compensation parameter determination device 830 may include a first acquisition module 831, a second acquisition module 832, a first determination module 833, and a second determination module 834.

[0104] The first acquisition module 831 is used to acquire the chromaticity data corresponding to the display panel displaying red, green and blue images respectively; the red image is displayed when the red sub-pixel of the display panel emits light, the green image is displayed when the green sub-pixel of the display panel emits light, and the blue image is displayed when the blue sub-pixel of the display panel emits light.

[0105] In this embodiment, the first acquisition module 831 can be used to perform... Figure 1 For a detailed description of the first acquisition module 831, please refer to the description of step S11 shown in step S11.

[0106] The second acquisition module 832 is used to acquire the first brightness data of the white image displayed on the display panel at the target grayscale.

[0107] In this embodiment, the second acquisition module 832 can be used to perform... Figure 1 For a detailed description of the second acquisition module 832, please refer to the description of step S12 shown in step S12.

[0108] The first determining module 833 determines, based on the chromaticity data and the first brightness data, the second brightness data for the display panel to display red, green and blue images at the target grayscale.

[0109] In this embodiment, the first determining module 833 can be used to perform... Figure 1 For a detailed description of the first determining module 833, please refer to the description of step S13.

[0110] The second determining module 834 determines the compensation value corresponding to each red sub-pixel, green sub-pixel and blue sub-pixel under the target grayscale based on the second brightness data.

[0111] In this embodiment, the second determining module 834 can be used to perform... Figure 1 For a detailed description of the second determining module 834, please refer to the description of step S14.

[0112] This application also provides a display panel debugging device 800, please refer to... Figure 4 The system includes a machine-readable storage medium 820 and a processor 810. The machine-readable storage medium 820 stores machine-executable instructions, which, when executed by the processor 810, implement the display panel compensation parameter determination method described in any of the preceding claims. The machine-readable storage medium 820 and the processor 810 are electrically connected directly or indirectly to each other to enable data transmission or interaction.

[0113] This application also provides a display panel that stores a compensation value determined by any of the methods described above.

[0114] In summary, this application provides a method, apparatus, and display panel for determining compensation parameters of a display panel. By simply acquiring the chromaticity data of the red, green, and blue images displayed on the display panel, and the first luminance data of the white image displayed at the target grayscale, the second luminance data of the three colors (red, green, and blue) can be calculated at the target grayscale. This allows for the determination of the luminance compensation values ​​corresponding to each red, green, and blue sub-pixel at the target grayscale. By directly and accurately compensating for the red, green, and blue luminance components in the white image, the coupling phenomenon between the three primary color luminances can be effectively avoided when displaying a white image, thereby significantly improving the luminance uniformity of the white screen and optimizing the effect of image correction compensation on the display panel.

[0115] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for determining compensation parameters for a display panel, characterized in that, include: Obtain the chromaticity data corresponding to the display panel when displaying red, green, and blue images, respectively; When the red sub-pixel of the display panel emits light, it displays the red image; when the green sub-pixel of the display panel emits light, it displays the green image; when the blue sub-pixel of the display panel emits light, it displays the blue image. Obtain the first brightness data of the display panel when displaying a white image at the target grayscale; Based on the chromaticity data and the first brightness data, a second brightness data is determined for the display panel to display red, green, and blue images at the target grayscale. The brightness compensation value corresponding to each of the red sub-pixels, the green sub-pixels and the blue sub-pixels at the target gray level is determined based on the second brightness data.

2. The method according to claim 1, characterized in that, The step of obtaining the chromaticity data corresponding to the red, green, and blue images displayed on the display panel includes: Obtain the chromaticity data corresponding to the display panel displaying red, green and blue images at the highest grayscale.

3. The method according to claim 1, characterized in that, The step of obtaining the chromaticity data corresponding to the red, green, and blue images displayed on the display panel includes: For multiple different display areas on the display panel, the chromaticity data corresponding to each display area when the display panel displays a red image, a green image, and a blue image is obtained respectively; each display area includes multiple pixels; The step of obtaining the first brightness data of the display panel displaying a white image at the target grayscale includes: Acquire the first brightness data of each pixel when the display panel displays a white image at the target grayscale; The step of determining the second brightness data for the display panel to display red, green, and blue images at the target grayscale based on the chromaticity data and the first brightness data includes: For each pixel, based on the chromaticity data corresponding to the display area where the pixel is located and the first luminance data corresponding to the pixel, the second luminance data corresponding to each sub-pixel of the pixel in the target grayscale is determined.

4. The method according to claim 3, characterized in that, The step of acquiring the chromaticity data corresponding to each display area when the display panel displays red, green, and blue images respectively includes: For each of the display areas, the average chromaticity value of the display area when the display panel displays a red image, a green image, and a blue image is respectively obtained as the chromaticity data corresponding to that display area.

5. The method according to claim 1, characterized in that, The step of obtaining the chromaticity data corresponding to the red, green, and blue images displayed on the display panel includes: The color coordinates in the Yxy color space corresponding to the red, green, and blue images displayed on the display panel are obtained respectively and used as the chromaticity data.

6. The method according to claim 5, characterized in that, The step of determining the second brightness data of the display panel for displaying red, green, and blue images at the target grayscale based on the chromaticity data and the first brightness data includes: The second brightness data corresponding to the red, green, and blue images is calculated using the following formula: Among them, Y rwn Y gwn Y bwn These are the second brightness data of the red, green, and blue images at the target grayscale; Y wn The first brightness data; x w y w z w These are the color coordinates that guarantee the chromaticity data of the white image; x rw y rw and z rw These are the chromaticity coordinates representing the chromaticity data of a red image, x and x'. gw y gw and z gw These are the chromaticity coordinates representing the chromaticity data of the green image, x and y. bw y bw and z bw These are the color coordinates representing the chromaticity data of the blue image.

7. The method according to claim 5, characterized in that, The step of obtaining the first brightness data of the display panel displaying a white image at the target grayscale includes: The first brightness data of the display panel displaying a white image at multiple different target grayscale levels are obtained respectively; The step of determining the second brightness data for the display panel to display red, green, and blue images at the target grayscale based on the chromaticity data and the first brightness data includes: For each of the multiple different target gray levels, the second brightness data for displaying red, green and blue images on the display panel is determined based on the chromaticity data and the first brightness data corresponding to the target gray level.

8. A device for determining compensation parameters for a display panel, characterized in that, include: The first acquisition module is used to acquire the chromaticity data corresponding to the display panel when displaying red, green and blue images respectively; When the red sub-pixel of the display panel emits light, it displays the red image; when the green sub-pixel of the display panel emits light, it displays the green image; when the blue sub-pixel of the display panel emits light, it displays the blue image. The second acquisition module is used to acquire the first brightness data of the display panel displaying a white image at the target grayscale. The first determining module determines, based on the chromaticity data and the first brightness data, the second brightness data for the display panel to display red, green and blue images at the target grayscale. The second determining module determines the brightness compensation value corresponding to each of the red sub-pixels, the green sub-pixels and the blue sub-pixels at the target grayscale based on the second brightness data.

9. A debugging device for a display panel, characterized in that, The device includes a machine-readable storage medium and a processor, wherein the machine-readable storage medium stores machine-executable instructions, which, when executed by the processor, implement the display panel compensation parameter determination method according to any one of claims 1-7.

10. A display panel, characterized in that, The display panel stores a compensation value determined by the method described in any one of claims 1-7.

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