WO2019061883A1 - 图像补偿信号生成的方法、结构及修复系统 - Google Patents
图像补偿信号生成的方法、结构及修复系统 Download PDFInfo
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- WO2019061883A1 WO2019061883A1 PCT/CN2017/117654 CN2017117654W WO2019061883A1 WO 2019061883 A1 WO2019061883 A1 WO 2019061883A1 CN 2017117654 W CN2017117654 W CN 2017117654W WO 2019061883 A1 WO2019061883 A1 WO 2019061883A1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/08—Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
Definitions
- the present application relates to the field of display, and in particular to a method for generating an image compensation signal, a structure for generating an image compensation signal, and a repair system.
- liquid crystal displays With the rapid development of the display technology industry, liquid crystal displays have become mainstream products in recent years. Driven by user demand and competitive pressures in the industry, liquid crystal displays have the advantages of high resolution, high brightness and no geometric distortion. At the same time, due to their small size, light weight and low power consumption, they are widely used in people's daily use. In consumer electronics, such as televisions, computers, mobile phones, tablets, etc.
- the flat display module is a main component of the liquid crystal display.
- the manufacturing process is complicated and requires nearly one hundred processes. Therefore, various display defects are inevitable in the manufacturing process. These display defects are more common in the light source unevenness (Mura) defect.
- the light source unevenness (Mura) defect is caused by uneven brightness of the display panel under the same light source and the same background color, which makes the difference in color or brightness perceived by the light, and the light source unevenness (Mura) defect is generated.
- Reasons include circuit defects, structural defects, material properties, and process levels.
- the 4K display screen (Ultra HD; UHD) has a resolution of 3840*2160 pixels.
- the current minimum compensation unit is 8*8 pixels, which is fixed in both horizontal and vertical directions.
- a compensation point is taken at intervals of 8 pixels (pixel), and the compensation point is used as a reference.
- the compensation data of each pixel (pixel) is obtained by mathematical operation. At present, this method does not distinguish the light source.
- the present application determines the brightness difference between each area to be compensated and the reference point, and directly sets the compensation value to 0 in the area with small difference, thereby reducing the total removal of the light source (Demura). By calculating the amount of data, you can reduce the calculation time.
- a method for generating image compensation signals includes the following steps:
- the display device may be, for example, a liquid crystal display, an OLED display, a micro LED display, a laser display, a plasma display, or other type of flat panel display device.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- An image compensation signal generation structure includes a brightness difference detection module, a difference determination module, a calculation module, and a processing module.
- the brightness difference detecting module obtains a brightness difference value according to a partition brightness value and a reference brightness value; the difference determining module determines whether the brightness difference value is less than a system default value; and the calculating module, when the brightness difference value exceeds The system default value calculates a compensation value; and the processing module sets an ideal brightness value of the display partition according to the compensation value.
- an image capture device is further included for obtaining the partition brightness value of a display partition.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the compensation value is calculated by the calculation module, and a light source is executed by the processing module.
- the partition brightness value adjustment of the Mura region is executed by the processing module.
- a repair system for providing an image compensation signal for a display device, the repair system comprising an image capture device for obtaining a brightness value of the display device, and a calculation structure for calculating a gray scale of the sample, and including The image compensates for the structure of the signal generation.
- an image capture device is further included for obtaining the partition brightness value of a display partition.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- the difference between the brightness of each block to be compensated and the reference point can be determined, and the compensation value is directly set to 0, thereby reducing the unevenness of the removed light source. (Demura)'s total calculated data volume can reduce the calculation time.
- the invention provides a method for reducing the calculation time of removing the light source unevenness (Demura) data.
- the method can quickly find the light source unevenness (Mura) region, and calculate the light source unevenness (Mura) region, thereby effectively reducing the amount of calculation, and also greatly reducing the need to remove the light source unevenness (Demura). The time to calculate the compensation value.
- FIG. 1 is a schematic structural diagram provided by an embodiment of the present application.
- FIG. 2 is a flow chart of steps of image compensation signal generation provided by an embodiment of the present application.
- FIG. 3 is a flow chart of the highest sampling gray level generated by the image compensation signal provided by the embodiment of the present application.
- FIG. 4 is a flow chart of the lowest sampling gray level generated by the image compensation signal provided by the embodiment of the present application.
- FIG. 5 is a flowchart of determining an image compensation signal generated by an embodiment of the present application.
- FIG. 6 is a schematic diagram of an embodiment of image compensation signal generation provided by an embodiment of the present application.
- FIG. 7 is a schematic diagram of a display device provided by an embodiment of the present application.
- the word “comprising” is to be understood to include the component, but does not exclude any other component.
- “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
- FIG. 1 is a schematic structural diagram of image compensation signal generation according to an embodiment of the present application.
- the image compensation signal generation structure of the present application includes a brightness difference detection module 101 , a difference determination module 102 , a calculation module 103 , and a processing module 104 .
- the brightness difference detecting module 101 obtains a brightness difference value according to a partition brightness value and a reference brightness value; the difference determining module 102 determines whether the brightness difference value is less than a system default value; and the calculating module 103, when the brightness The difference value exceeds the default value of the system, and a compensation value is calculated; and the processing module 104 sets an ideal brightness value of the display partition according to the compensation value.
- an image capture device 105 is further included for obtaining the partition brightness value of a display partition.
- the image capture device 105 is configured to obtain a highest grayscale center luminance value of the all-white screen of the display device, a minimum center luminance value of the all black screen, and a Area brightness value.
- the display device may be, for example, a liquid crystal display, an OLED display, a micro LED display, a laser display, a plasma display, or other type of flat panel display device.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the processing module sets the compensation value to 0, and does not need to be calculated by the calculation module to simplify the compensation value calculation time.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- FIG. 2 is a flow chart of steps of image compensation signal generation provided by an embodiment of the present application. As shown in FIG. 2, reference is made to the following description.
- Step S201 Obtain a partition brightness value of the display partition by the image capturing device.
- Step S202 The brightness difference detection module obtains the brightness difference value according to the partition brightness value and the reference brightness value.
- Step S203 Determine, by the difference determination module, whether the brightness difference value is smaller than a system default value.
- Step S204A When the brightness difference value is less than the system default value, the partition is displayed as the ideal brightness value by the processing module.
- Step S204B When the brightness difference value exceeds the system default value, the compensation value of the display partition is calculated by the calculation module.
- Step S205 The processing module sets the display partition to an ideal brightness value according to the compensation value.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the processing module sets the compensation value to 0, and does not need to be calculated by the calculation module to simplify the compensation value calculation time.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- FIG. 3 is a flow chart of the highest sampling gray level generated by the image compensation signal provided by the embodiment of the present application. As shown in FIG. 3, reference is made to the following description.
- Step S301 Acquire, by the image capturing device, the highest grayscale center luminance value of the all white screen of the display device.
- Step S302 Set a grayscale percentage value through the calculation module, and adjust the brightness of the display device according to the grayscale percentage value.
- Step S303 Acquire an area brightness value of the display device according to the grayscale percentage value by the image capturing device.
- Step S304 The brightness difference detection module obtains the brightness difference value according to the highest gray level center brightness value and the area brightness value.
- Step S305 When the brightness difference value exceeds the system default value, the highest sampling gray level is obtained by the processing module.
- the system default value is a predefined value according to the system setting or the user's own setting.
- the gray scale percentage value is reduced by the calculation module.
- the grayscale percentage value reduced by the calculation module is determined according to a system setting or a user-set decrement value.
- FIG. 4 is a flow chart of the lowest sampling gray level generated by the image compensation signal provided by the embodiment of the present application. As shown in FIG. 4, reference is made to the following description.
- Step S401 Acquire, by the image capturing device, a lowest grayscale center luminance value of the black screen of the display device.
- Step S402 The grayscale percentage value is set by the calculation module, and the brightness of the display device is adjusted according to the grayscale percentage value.
- Step S403 Acquire an area brightness value of the display device according to the grayscale percentage value by the image capturing device.
- Step S404 The brightness difference detection module obtains the brightness difference value according to the lowest gray level central brightness value and the area brightness value.
- Step S405 When the brightness difference value exceeds the system default value, the lowest sampling gray level is obtained by the processing module.
- the system default value is a predefined value according to the system setting or the user's own setting.
- the gray scale percentage value is increased by the calculation module.
- the grayscale percentage value added by the calculation module is determined according to a system setting or an increment value set by a user.
- FIG. 5 is a flowchart of determining an image compensation signal generated by an embodiment of the present application. As shown in FIG. 3, taking the lowest sampling gray scale as an example, reference is made to the following description.
- the grayscale percentage value is set to 5% through the calculation module, and the brightness of the display device is adjusted according to the grayscale percentage value, and the display device regions are captured by the image capturing device.
- the brightness is then compared with the lowest central brightness value (as in step S501). If the brightness difference value exceeds the system default value, the processing module is used to obtain the lowest sampling gray level of 5% (as in step S502A), if the brightness difference value is less than
- the default value of the system is considered to be that there is no source unevenness (Mura) in the grayscale picture with the sampling gray scale of 5%, and the grayscale percentage value is incremented by the processing module to make the sampling gray level 10% (step S502B). And compare again with the lowest central brightness value.
- the input sampling gray scale is 5%
- the brightness of each area in the display device is captured by the image capturing device, and then compared with the lowest central brightness value, when the brightness difference is within the system default value, It is judged that there is no light source unevenness (Mura) in the gray scale picture of 5% of the sampling gray scale, and the input sampling gray scale is increased to 10%, and the detection is performed again.
- the sampling gray scale 10% detects that the brightness difference exceeds the system default value, Then, it is judged that 10% of the sampling gray scale is the lowest gray scale with the light source unevenness (Mura), and the minimum sampling gray scale is set as the sampling gray scale of 10%.
- the input sampling gray level is incremented, and the increment is based on system settings or user settings.
- the high sampling gray scale is detected by the same principle, and the highest gray scale with the light source unevenness (Mura) is found. If the light source unevenness (Mura) is more obvious, the highest gray scale is 60% of the sampling gray scale, then the highest sampling gray scale It is set at 60%. And calculating the intermediate sampling gray level according to the system setting or the user setting, which is half of the lowest gray level and the highest gray level in the embodiment, and the three sampling gray levels of the display device are sequentially the sampling gray level 10 %, sampling gray level 35% and sampling gray level 60%.
- the default value of the system is a predefined value according to a system setting or a user setting.
- the grayscale percentage value added by the calculation module is determined according to a system setting or an increment value set by a user.
- the grayscale percentage value is increased by the calculation module, and a new grayscale percentage value is obtained, the brightness of the display device is adjusted, and a new image acquisition device is obtained.
- the area brightness value is calculated. After calculating the brightness difference value, it is determined again whether the brightness difference value is smaller than the system default value.
- the highest sampling gray level is compared with the highest center brightness value. If the brightness difference value exceeds the system default value, the highest sampling gray level is obtained by the processing module. If the brightness difference value is less than the system default value, it is considered The obtained grayscale percentage value grayscale screen does not have the light source unevenness (Mura), and the grayscale percentage value is decremented by the processing module, and is again compared with the highest central luminance value.
- Mura light source unevenness
- FIG. 6 is a schematic diagram of an embodiment of image compensation signal generation provided by an embodiment of the present application.
- a 4K display screen (Ultra HD; UHD) 600 is obtained by the image capturing device, and the resolution is 3840*2160 pixels (pixel).
- the partition brightness value of the partition 601 is displayed, and the brightness difference detection module is used according to the partition.
- the brightness value and the reference brightness value are used to obtain the brightness difference value, and the difference determination module determines that the brightness difference value is smaller than the system default value, indicating that the display partition 601 is a non-light source unevenness (Mura) area, and also obtains the partition brightness value of the display partition 602.
- Mura non-light source unevenness
- the brightness difference detection module obtains the brightness difference value according to the partition brightness value and the reference brightness value, and determines, by the difference determination module, that the brightness difference value exceeds the system default value, indicating that the display partition 602 is a light source uneven (Mura) area, and
- the compensation value of the display partition 602 is calculated by the calculation module, and then the processing module is used to set the display partition 602 to an ideal brightness value according to the compensation value.
- the current Demura removal technique is mostly an example of a 4K display screen (Ultra HD; UHD) having a resolution of 3840*2160 pixels.
- the minimum compensation unit is 8*8 pixels (pixel), that is, a fixed interval of 8 pixels (pixel) in the horizontal direction and the vertical direction is taken as a compensation point, and the compensation point is used as a reference, and the mathematical operation is performed in practical application. In this way, the compensation data of each pixel (pixel) is obtained.
- the calculation value is not calculated by the calculation module, and the display area 601 is calculated. 0, thereby reducing the amount of calculation of the compensation data.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the processing module sets the compensation value to 0, and does not need to be calculated by the calculation module to simplify the compensation value calculation time.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- FIG. 7 is a schematic diagram of a repair system provided by an embodiment of the present application.
- the embodiment of the present application further provides a repairing system 701, which is configured to provide an image compensation signal for a display device, where the repairing system includes an image capturing device 702 for obtaining a brightness value of a display device, and is used for calculation.
- the computational structure of the gray scale is sampled and includes the structure of the image compensation signal generation.
- an image capture device 702 is further included for obtaining the partition brightness value of a display partition.
- the image capture device 702 is configured to obtain a highest grayscale center luminance value of the all-white screen of the display device, a minimum center luminance value of the all black screen, and a Area brightness value.
- the reference brightness value is a predefined value according to a system setting or a user setting.
- the system default value is a predefined value according to a system setting or a user setting.
- the display partition is the ideal brightness value
- the compensation value is 0.
- the processing module sets the compensation value to 0, and does not need to be calculated by the calculation module to simplify the compensation value calculation time.
- the compensation value is calculated by the calculation module, and a light source unevenness (Mura) area is executed by the processing module.
- the partition brightness value adjustment is performed by the calculation module.
- the current Demura removal technique is mostly an example of a 4K display screen (Ultra HD; UHD) having a resolution of 3840*2160 pixels.
- the minimum compensation unit is 8*8 pixels (pixel), that is, a fixed interval of 8 pixels (pixel) in the horizontal direction and the vertical direction is taken as a compensation point, and the compensation point is used as a reference, and the mathematical operation is performed in practical application. In this way, the compensation data of each pixel (pixel) is obtained.
- the light source unevenness (Mura) region and the non-light source unevenness (Mura) region are determined, and the calculation time of the non-light source unevenness (Mura) region is effectively reduced.
- the present application provides a display in which the compensation difference is directly set by determining the difference in brightness between each area to be compensated and the reference point, thereby reducing the unevenness of the removed light source (Demura).
- the total amount of data calculated can reduce the calculation time.
- the present application further provides a dynamic selection of a display to remove the light source unevenness (Demura) sampling gray scale, by detecting the light source unevenness (Mura) there is a relatively obvious gray scale, and then according to the gray scale to set the sampling gray scale, to achieve The most accurate compensation effect.
- Demura light source unevenness
- Mura light source unevenness
- the invention provides a method for reducing the calculation time of removing the light source unevenness (Demura) data.
- the method can quickly find the light source unevenness (Mura) region, and calculate the light source unevenness (Mura) region, thereby effectively reducing the amount of calculation, and also greatly reducing the need to remove the light source unevenness (Demura). The time to calculate the compensation value.
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Abstract
一种图像补偿信号生成的方法,包括以下步骤:通过影像捕获设备(105)取得显示分区的分区亮度数值;并通过亮度差异侦测模块(101)依据分区亮度数值与基准亮度数值,取得亮度差异值;再通过差异判定模块(102),判断亮度差异值是否小于系统默认值;当亮度差异值小于系统默认值,通过处理模块(104)设定显示分区为理想亮度值;当亮度差异值超过系统默认值,通过计算模块(103)计算显示分区的补偿值;最后,通过处理模块(104),依据补偿值设定显示分区为理想亮度值。
Description
本申请涉及显示领域,特别是涉及一种图像补偿信号生成的方法、图像补偿信号生成的结构及修复系统。
随着显示技术行业的快速发展,液晶显示器已经成为近年来主流的产品。在用户需求与行业竞争压力的驱使下,液晶显示器具有具有高分辨率、高亮度以及无几何变形等优点,同时由于其体积小、重量轻和功耗低,被广泛的应用在人们日常使用的消费电子产品中,例如电视、计算机、手机、平板等。而平面显示模块是液晶显示器的主体组成部分,其制造工艺复杂,需要近百道工序,因此在制造过程中难免会出现各种显示缺陷,这些显示缺陷较为常见的是光源不均(Mura)缺陷,光源不均(Mura)缺陷是在同一光源且底色相同的画面下,因显示面板亮度不均匀造成各种痕迹,使视觉感受到的不同颜色或者亮度的差异,光源不均(Mura)缺陷产生的原因包括电路缺陷、结构缺陷、材料特性以及工艺水平等,通过在暗室中将显示面板切换到黑色画面以及其它低灰阶画面,然后从各种不同的角度去看显示画面中是否存在痕迹,即可判断该显示面板是否存在光源不均(Mura),这种痕迹可能是横向条纹或四十五度角条纹,可能是切得很直的方块,可能是某个角落出现一块,也可能是没有规则可言的痕迹,通常我们将这种出现各种痕迹的显示区域称为光源不均(Mura),而给人们带来视觉上的不适,严重影响并降低面板的质量等级。
随着科技的发展及人们物质生活的需求,近些年来,现今显示屏幕的尺寸做得越来越大,分辨率也越做越高,随着4K、2K显示屏幕的普及,光源不均(Mura)现象越来越严重,过去的作为是通过检测人员直接观察显示屏幕画面的瑕疵,并以其主观判断瑕疵的程度以及显示屏幕的质量,但如此一来,花费了许多的人力以及时间,却不一定能够有效发现这样的画面瑕疵,而后自动化的移除光源不均(Demura)技术便应运而生,目前这种做法比较简便易行,但是默认会针对每块区域都进行计算,所以会导致计算时间较长,会对批量化生产带来效率的困扰。以4K显示屏幕(Ultra HD;UHD)其分辨率为3840*2160个像素(pixel)的举例,目前的最小补偿单元是8*8个像素(pixel),即水平方向和垂直方向上都是固定间隔8个像素(pixel)取一个补偿点,以此补偿点为基准,在实际应用时通过数学运算的方式得到每个像素(pixel)的补偿资料,目前这种办法并不会去区分光源不均(Mura)区域和非光源不均(Mura)区域,所以总的补偿点数量就是481*271,而每个点的补偿数据为12位(bit),那么需要进行计算的总数据量就是481*271*12=1.49兆字节(Megabyte,Mb),数据量较 大,耗费时间就会较多,目前4K显示屏幕(Ultra HD;UHD)机种的移除光源不均(Demura)时间均在1分钟以上。
发明内容
为了解决上述技术问题,本申请通过判断每块待补偿区域与基准点的亮度差异大小,将差异较小的区域直接设置补偿值为0,以此来减少移除光源不均(Demura)的总计算数据量,就可以减少计算时间。
本申请的目的及解决其技术问题采用以下技术方案来实现的,依据本申请的提出一种图像补偿信号生成的方法,包括以下步骤:
首先,通过一影像捕获设备取得一显示分区的一分区亮度数值;并通过一亮度差异侦测模块依据所述分区亮度数值与一基准亮度数值,取得一亮度差异值;再通过一差异判定模块,判断所述亮度差异值是否小于一系统默认值;当所述亮度差异值小于所述系统默认值,通过一处理模块设定所述显示分区为一理想亮度值;当所述亮度差异值超过所述系统默认值,通过一计算模块计算所述显示分区的所述补偿值;最后,通过所述处理模块,依据所述补偿值设定所述显示分区为所述理想亮度值。
在本申请的一实施例中,显示设备可例如为液晶显示器、OLED显示器、微型LED显示器、激光显示器、等离子显示屏或其他类型的平板显示设备。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
本申请的目的及解决其技术问题还可采用以下技术措施进一步实现。依据本申请提出的一种图像补偿信号生成的结构包括一亮度差异侦测模块、一差异判定模块、一计算模块以及一处理模块。亮度差异侦测模块,依据一分区亮度数值与一基准亮度数值,取得一亮度差异值;差异判定模块,判断所述亮度差异值是否小于一系统默认值;计算模块,当所述亮度差异值超过所述一系统默认值,计算出一补偿值;以及处理模块,依据所述补偿值设定所述显示分区的一理想亮度值。
在本申请的一实施例中,更包括一影像捕获设备,用以取得一显示分区的所述分区亮度数值。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮 度值,所述补偿值为0。
在本申请的一实施例中,在本申请的实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
本申请的目的及解决其技术问题更可采用以下技术措施进一步实现。依据本申请提出的一种修复系统,用于为显示设备提供图像补偿信号,所述修复系统包括用于取得显示设备亮度数值的影像捕获设备,以及用于计算取样灰阶的计算结构,并包括所述图像补偿信号生成的结构。
在本申请的一实施例中,更包括一影像捕获设备,用以取得一显示分区的所述分区亮度数值。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
通过本申请提出一个图像补偿信号生成的技术,可以通过判断每块待补偿区域与基准点的亮度差异大小,将差异较小的区域直接设置补偿值为0,以此来减少移除光源不均(Demura)的总计算数据量,就可以减少计算时间。
随着高分辨率屏幕的制造能力以及技术越来越成熟,光源不均(Mura)区域也越来越小,传统的移除光源不均(Demura)因为必须针对全屏幕进行补偿计算,运算时间的耗费是相当大的,花费极大运算时间,仅取得极小的光源不均(Mura)区域,相对来说是极为浪费,通过本案发明提供减少移除光源不均(Demura)数据计算时间的方法,可以快速寻找到光源不均(Mura)区域,并针对该光源不均(Mura)区域加以计算,有效减少计算量,也可以极大化的减少移除光源不均(Demura)时所需要计算补偿值的时间。
图1是本申请实施例提供的结构示意图。
图2是本申请实施例提供的图像补偿信号生成的步骤流程图。
图3是本申请实施例提供的图像补偿信号生成的最高取样灰阶流程图。
图4是本申请实施例提供的图像补偿信号生成的最低取样灰阶流程图。
图5是本申请实施例提供的图像补偿信号生成的判断流程图。
图6是本申请实施例提供的图像补偿信号生成的实施例示意图。
图7是本申请实施例提供的显示设备示意图。
以下各实施例的说明是参考附加的图式,用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是参考附加图式的方向。因此,使用的方向用语是用以说明及理解本申请,而非用以限制本申请。
附图和说明被认为在本质上是示出性的,而不是限制性的。在图中,结构相似的单元是以相同标号表示。另外,为了理解和便于描述,附图中示出的每个组件的尺寸和厚度是任意示出的,但是本申请不限于此。
另外,在说明书中,除非明确地描述为相反的,否则词语“包括”将被理解为意指包括所述组件,但是不排除任何其它组件。此外,在说明书中,“在......上”意指位于目标组件上方或者下方,而不意指必须位于基于重力方向的顶部上。
为更进一步阐述本申请为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例,对依据本申请提出的图像补偿信号生成的方法、结构及修复系统,其具体实施方式、结构、特征及其功效,详细说明如后。
图1是本申请实施例提供的图像补偿信号生成的结构示意图。如图1所示,本申请图像补偿信号生成的结构,包括一亮度差异侦测模块101、一差异判定模块102、一计算模块103以及一处理模块104。亮度差异侦测模块101,依据一分区亮度数值与一基准亮度数值,取得一亮度差异值;差异判定模块102,判断所述亮度差异值是否小于一系统默认值;计算模块103,当所述亮度差异值超过所述一系统默认值,计算出一补偿值;以及处理模块104,依据所述补偿值设定所述显示分区的一理想亮度值。
在本申请的一实施例中,更包括一影像捕获设备105,用以取得一显示分区的所述分区亮度数值。
在本申请的一实施例中,更包括通过所述影像捕获设备105,用以取得所述显示设备全白画面的一最高灰阶中心亮度数值、全黑画面的一最低中心亮度数值、以及一区域亮度数值。
在本申请的一实施例中,显示设备可例如为液晶显示器、OLED显示器、微型LED显示器、激光显示器、等离子显示屏或其他类型的平板显示设备。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
在本申请的一实施例中,所述处理模块设定所述补偿值为0,不需通过所述计算模块计算,以简化补偿值计算时间。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
图2是本申请实施例提供的图像补偿信号生成的步骤流程图。如图2所示,参考如下说明。
步骤S201:通过影像捕获设备取得显示分区的分区亮度数值。
步骤S202:通过亮度差异侦测模块依据分区亮度数值与基准亮度数值,取得亮度差异值。
步骤S203:通过差异判定模块,判断亮度差异值是否小于系统默认值。
步骤S204A:当亮度差异值小于系统默认值,通过处理模块显示分区为理想亮度值。
步骤S204B:当亮度差异值超过系统默认值,通过计算模块计算显示分区的补偿值。
步骤S205:通过处理模块,依据补偿值设定显示分区为理想亮度值。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
在本申请的一实施例中,所述处理模块设定所述补偿值为0,不需通过所述计算模块计算,以简化补偿值计算时间。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
图3是本申请实施例提供的图像补偿信号生成的最高取样灰阶流程图。如图3所示,参考如下说明。
步骤S301:通过影像捕获设备取得显示设备全白画面的最高灰阶中心亮度数值。
步骤S302:通过计算模块,设定灰阶百分比值,并依据灰阶百分比值调整显示设备的亮度。
步骤S303:通过影像捕获设备依据灰阶百分比值,取得显示设备的区域亮度数值。
步骤S304:通过亮度差异侦测模块依据最高灰阶中心亮度数值与区域亮度数值,取得亮度差异值。
步骤S305:当亮度差异值超过系统默认值,通过处理模块,取得最高取样灰阶。
在本实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本实施例中,当所述亮度差异值小于所述系统默认值,通过所述计算模块减少灰阶百分比值。
在本实施例中,所述通过所述计算模块减少的灰阶百分比值,依据系统设定或用户自行设定的 递减值。
图4是本申请实施例提供的图像补偿信号生成的最低取样灰阶流程图。如图4所示,参考如下说明。
步骤S401:通过影像捕获设备取得显示设备全黑画面的最低灰阶中心亮度数值。
步骤S402:通过计算模块,设定灰阶百分比值,并依据灰阶百分比值调整显示设备的亮度。
步骤S403:通过影像捕获设备依据灰阶百分比值,取得显示设备的区域亮度数值。
步骤S404:通过亮度差异侦测模块依据最低灰阶中心亮度数值与区域亮度数值,取得亮度差异值。
步骤S405:当亮度差异值超过系统默认值,通过处理模块,取得最低取样灰阶。
在本实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本实施例中,当所述亮度差异值小于所述系统默认值,通过所述计算模块增加灰阶百分比值。
在本实施例中,所述通过所述计算模块增加的灰阶百分比值,依据系统设定或用户自行设定的递增值。
图5是本申请实施例提供的图像补偿信号生成的判断流程图。如图3所示,以最低取样灰阶为例,参考如下说明。
本实施例中以输入取样灰阶5%为例,通过计算模块,设定灰阶百分比值为5%,并依据灰阶百分比值调整显示设备的亮度,并通过影像捕获设备拍摄显示设备各区域的亮度,然后与最低中心亮度数值进行比对(如步骤S501),假如亮度差异值超过系统默认值,通过处理模块,取得最低取样灰阶为5%(如步骤S502A),假如亮度差异值小于系统默认值,就认为取得取样灰阶为5%的灰阶画面不存在光源不均(Mura)的情况,并通过处理模块递增灰阶百分比值使取样灰阶为10%(如步骤S502B),并再次与最低中心亮度数值进行比对。
在本实施例中,所述输入取样灰阶为5%,通过影像捕获设备拍摄所述显示设备中各区域的亮度,然后与最低中心亮度数值进行比对,当亮度差异在系统默认值以内,判断取样灰阶5%的灰阶画面不存在光源不均(Mura),并提高输入取样灰阶为10%,再次进行侦测,当取样灰阶10%侦测到亮度差异超出系统默认值,则判断取样灰阶10%是光源不均(Mura)较明显的最低灰阶,设定最低取样灰阶就定为取样灰阶10%。若亮度差异在系统默认值以内,输入取样灰阶就一直递增,其中递增的幅度依据系统设定或用户设定。高取样灰阶通过相同原理进行侦测,找到光源不均(Mura)较明显的最高灰阶,若光源不均(Mura)较明显的最高灰阶为取样灰阶60%,那么最高取样灰阶就定为60%。并依据系统设定或用户设定通过计算出中间取样灰阶,在本实施例中为最低灰阶和最高灰阶的一半,所述显示设备的3个取样灰阶依序为取样灰阶10%、取样灰阶35%以及取样灰阶60%。
在本实施例中,所述系统默认值为依据系统设定或用户自行设定的预先定义值。
在本实施例中,所述通过所述计算模块增加的灰阶百分比值,依据系统设定或用户自行设定的递增值。
在本实施例中,当所述亮度差异值小于所述系统默认值,通过所述计算模块增加灰阶百分比值,并取得新的灰阶百分比值,调整显示设备亮度,通过影像捕获设备取得新的区域亮度数值,计算亮度差异值后,再次判断亮度差异值是否小于系统默认值。
在本实施例中,最高取样灰阶通过与最高中心亮度数值进行比对,假如亮度差异值超过系统默认值,通过处理模块,取得最高取样灰阶,假如亮度差异值小于系统默认值,就认为取得的灰阶百分比值灰阶画面不存在光源不均(Mura)的情况,并通过处理模块递减灰阶百分比值,并再次与最高中心亮度数值进行比对。
图6是本申请实施例提供的图像补偿信号生成的实施例示意图。如图6所示,通过影像捕获设备取得一4K显示屏幕(Ultra HD;UHD)600其分辨率为3840*2160个像素(pixel)显示分区601的分区亮度数值,通过亮度差异侦测模块依据分区亮度数值与基准亮度数值,取得亮度差异值,并通过差异判定模块,判断亮度差异值小于系统默认值,表示显示分区601为非光源不均(Mura)区域,同样取得显示分区602的分区亮度数值,通过亮度差异侦测模块依据分区亮度数值与基准亮度数值,取得亮度差异值,并通过差异判定模块,判断亮度差异值超过系统默认值,表示显示分区602为光源不均(Mura)区域,并通过计算模块计算显示分区602的补偿值,再通过处理模块,依据补偿值设定显示分区602为理想亮度值。
在本申请的一实施例中,以现行的移除光源不均(Demura)技术多为当4K显示屏幕(Ultra HD;UHD)其分辨率为3840*2160个像素(pixel)的举例,目前的最小补偿单元是8*8个像素(pixel),即水平方向和垂直方向上都是固定间隔8个像素(pixel)取一个补偿点,以此补偿点为基准,在实际应用时通过数学运算的方式得到每个像素(pixel)的补偿资料,目前这种办法并不会去区分光源不均(Mura)区域和非光源不均(Mura)区域,所以总的补偿点数量就是481*271,而每个点的补偿数据为12位(bit),那么需要进行计算的总数据量就是481*271*12=1.49兆字节(Megabyte,Mb)。
在本申请的一实施例中,当所述亮度差异值小于系统默认值,表示显示分区601为非光源不均(Mura)区域,不需通过计算模块计算补偿值,此显示分区601计算量为0,进而减少补偿数据的计算量。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮 度值,所述补偿值为0。
在本申请的一实施例中,所述处理模块设定所述补偿值为0,不需通过所述计算模块计算,以简化补偿值计算时间。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
图7是本申请实施例提供的修复系统示意图。如图7所示,本申请实施例还提供一种修复系统701,用于为显示设备提供图像补偿信号,所述修复系统包括用于取得显示设备亮度数值的影像捕获设备702,以及用于计算取样灰阶的计算结构,并包括所述图像补偿信号生成的结构。
在本申请的一实施例中,更包括一影像捕获设备702,用以取得一显示分区的所述分区亮度数值。
在本申请的一实施例中,更包括通过所述影像捕获设备702,用以取得所述显示设备全白画面的一最高灰阶中心亮度数值、全黑画面的一最低中心亮度数值、以及一区域亮度数值。
在本申请的一实施例中,所述基准亮度数值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述系统默认值为依据系统设定或用户自行设定的一预先定义值。
在本申请的一实施例中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
在本申请的一实施例中,所述处理模块设定所述补偿值为0,不需通过所述计算模块计算,以简化补偿值计算时间。
在本申请的一实施例中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值,并通过所述处理模块执行一光源不均(Mura)区域的所述分区亮度数值调整。
在本申请的一实施例中,以现行的移除光源不均(Demura)技术多为当4K显示屏幕(Ultra HD;UHD)其分辨率为3840*2160个像素(pixel)的举例,目前的最小补偿单元是8*8个像素(pixel),即水平方向和垂直方向上都是固定间隔8个像素(pixel)取一个补偿点,以此补偿点为基准,在实际应用时通过数学运算的方式得到每个像素(pixel)的补偿资料,目前这种办法并不会去区分光源不均(Mura)区域和非光源不均(Mura)区域,所以总的补偿点数量就是481*271,而每个点的补偿数据为12位(bit),那么需要进行计算的总数据量就是481*271*12=1.49兆字节(Megabyte,Mb)。通过本申请实施例,判断光源不均(Mura)区域以及非光源不均(Mura)区域,有效减少非光源不均(Mura)区域的计算时间。
综上所述,本申请提供一个显示器在于通过判断每块待补偿区域与基准点的亮度差异大小,将差异较小的区域直接设置补偿值为0,以此来减少移除光源不均(Demura)的总计算数据量,就可以 减少计算时间。
本申请更提供一个显示器的动态选取移除光源不均(Demura)取样灰阶,通过侦测光源不均(Mura)存在较明显的灰阶,再根据这些灰阶去设定取样灰阶,达到最精准的补偿效果。
随着高分辨率屏幕的制造能力以及技术越来越成熟,光源不均(Mura)区域也越来越小,传统的移除光源不均(Demura)因为必须针对全屏幕进行补偿计算,运算时间的耗费是相当大的,花费极大运算时间,仅取得极小的光源不均(Mura)区域,相对来说是极为浪费,通过本案发明提供减少移除光源不均(Demura)数据计算时间的方法,可以快速寻找到光源不均(Mura)区域,并针对该光源不均(Mura)区域加以计算,有效减少计算量,也可以极大化的减少移除光源不均(Demura)时所需要计算补偿值的时间。
“在一些实施例中”及“在各种实施例中”等用语被重复地使用。所述用语通常不是指相同的实施例;但它也可以是指相同的实施例。“包含”、“具有”及“包括”等用词是同义词,除非其前后文意显示出其它意思。
以上所述,仅是本申请的实施例,并非对本申请作任何形式上的限制,虽然本申请已以具体的实施例揭露如上,然而并非用以限定本申请,任何熟悉本专业的技术人员,在不脱离本申请技术方案范围内,当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例,但凡是未脱离本申请技术方案的内容,依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本申请技术方案的范围内。
Claims (20)
- 一种图像补偿信号生成的方法,包括以下步骤:通过一影像捕获设备取得一显示分区的一分区亮度数值;通过一亮度差异侦测模块依据所述分区亮度数值与一基准亮度数值,取得一亮度差异值;通过一差异判定模块,判断所述亮度差异值是否小于一系统默认值;当所述亮度差异值小于所述系统默认值,通过一处理模块设定所述显示分区为一理想亮度值;当所述亮度差异值超过所述系统默认值,通过一计算模块计算所述显示分区的所述补偿值;以及通过所述处理模块,依据所述补偿值设定所述显示分区为所述理想亮度值。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述基准亮度数值为依据系统设定的一预先定义值。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述基准亮度数值为依据用户自行设定的一预先定义值。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述系统默认值为依据系统设定的一预先定义值。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述系统默认值为依据用户自行设定的一预先定义值。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值。
- 如权利要求6所述图像补偿信号生成的方法,其中,所述补偿值为0。
- 如权利要求1所述图像补偿信号生成的方法,其中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值。
- 如权利要求8所述图像补偿信号生成的方法,其中,通过所述处理模块执行一光源不均区域的所述分区亮度数值调整。
- 一种图像补偿信号生成的结构,包括:一亮度差异侦测模块,依据一分区亮度数值与一基准亮度数值,取得一亮度差异值;一差异判定模块,判断所述亮度差异值是否小于一系统默认值;一计算模块,当所述亮度差异值超过所述一系统默认值,计算出一补偿值;以及一处理模块,依据所述补偿值设定所述显示分区的一理想亮度值。
- 如权利要求10所述图像补偿信号生成的结构,更包括:一影像捕获设备,用以取得一显示分 区的所述分区亮度数值。
- 如权利要求10所述图像补偿信号生成的结构,其中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值。
- 如权利要求12所述图像补偿信号生成的结构,其中,所述补偿值为0。
- 如权利要求10所述图像补偿信号生成的结构,其中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值。
- 如权利要求14所述图像补偿信号生成的结构,其中,通过所述处理模块执行一光源不均区域的所述分区亮度数值调整。
- 一种修复系统,用于为显示设备提供图像补偿信号,所述修复系统包括:影像捕获设备,用于取得显示设备亮度数值;计算结构,用于计算取样灰阶;图像补偿信号生成的结构,所述图像补偿信号生成的结构包括:一亮度差异侦测模块,依据一分区亮度数值与一基准亮度数值,取得一亮度差异值;一差异判定模块,判断所述亮度差异值是否小于一系统默认值;一计算模块,当所述亮度差异值超过所述一系统默认值,计算出一补偿值;以及一处理模块,依据所述补偿值设定所述显示分区的一理想亮度值。
- 如权利要求16所述的修复系统,更包括一影像捕获设备,用以取得一显示分区的所述分区亮度数值。
- 如权利要求16所述的修复系统,其中,所述亮度差异值小于所述系统默认值时,所述显示分区为所述理想亮度值,所述补偿值为0。
- 如权利要求16所述的修复系统,其中,所述亮度差异值超过所述系统默认值时,通过所述计算模块计算所述补偿值。
- 如权利要求19所述的修复系统,其中,通过所述处理模块执行一光源不均区域的所述分区亮度数值调整。
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CN105913815A (zh) * | 2016-04-15 | 2016-08-31 | 深圳市华星光电技术有限公司 | 显示面板Mura现象补偿方法 |
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CN107170419A (zh) * | 2017-06-29 | 2017-09-15 | 惠科股份有限公司 | 显示面板驱动方法、系统及显示装置 |
CN107492335A (zh) * | 2017-09-26 | 2017-12-19 | 惠科股份有限公司 | 图像补偿信号生成的方法、结构及修复系统 |
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