Method and device for eliminating screen unevenness
A screen, triangle technology used in instrumentation, luminance and chrominance signal processing circuits, static indicators, etc.
Active Publication Date: 2019-09-17
上海顺久电子科技有限公司
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Obviously, the above method of eliminating chroma mura is contradictory to improving the coverage of color gamut space
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[0056] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application. The following content is a detailed description of specific implementation methods, structures, features and functions according to the present application in conjunction with the accompanying drawings and preferred embodiments.
[0057] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the ...
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The invention provides a method and a device for eliminating screen non-uniformity. The method comprises the following steps: in accordance with test graphic cards of multiple gray-scale levels, generating a comprehensive compensating coefficient of each subarea under each gray-scale level, so that a comprehensive compensating coefficient set is obtained; and then, for a specific to-be-compensated pixel, determining a target comprehensive compensating coefficient in accordance with a target subarea of the gray-scale level and the comprehensive compensating coefficient set after the gray-scale level of the to-be-compensated pixel and the target subarea are determined, and compensating the to-be-compensated pixel in accordance with the target comprehensive compensating coefficient. Both chroma information and brightness information are taken into full consideration in a process of generating the comprehensive compensating coefficients; therefore, compensation to both chroma mura and brightness mura can be taken into consideration when the to-be-compensated pixel is compensated by virtue of the comprehensive compensating coefficients, so that color gamut coverage is guaranteed to the greatest extent, and the chroma mura and brightness mura are eliminated under the precondition of guaranteeing the color gamut coverage.
Description
technical field [0001] The embodiments of the present application relate to display technologies, and in particular to a method and device for eliminating screen unevenness. Background technique [0002] The mura defect refers to the phenomenon of uneven display on the display panel when the display is working. The causes of mura defects include circuit defects, structural defects, material characteristics, process level, etc. Typically, mura defects include luminance mura and chrominance mura. Among them, brightness mura refers to the difference in brightness in different areas of the display panel, resulting in uneven brightness and darkness; chromaticity mura refers to the inconsistency of chromaticity in different areas of the display panel, resulting in color cast. [0003] At present, for the mura defect, the main purpose is to eliminate the brightness mura. In the process of eliminating luminance mura, according to the distribution information of luminance defects ...
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IPC IPC(8): G09G5/02G09G5/10H04N9/77
Inventor田广王中琦
Owner上海顺久电子科技有限公司