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Method and device for eliminating screen non-uniformity

A screen, triangular technology used in cathode ray tube indicators, instruments, luminance and chrominance signal processing circuits, etc.

Active Publication Date: 2017-05-31
上海顺久电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the above method of eliminating chroma mura is contradictory to improving the coverage of color gamut space

Method used

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  • Method and device for eliminating screen non-uniformity
  • Method and device for eliminating screen non-uniformity
  • Method and device for eliminating screen non-uniformity

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Embodiment Construction

[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 described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application. The following content is a detailed description of the specific embodiments, structures, features and effects of the present application in conjunction with the accompanying drawings and preferred embodiments.

[0057] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-ment...

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Abstract

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 non-uniformity. Background technique [0002] 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 properties, and process levels. Typically, mura defects include luminance mura and chromatic mura. Among them, the brightness mura refers to the difference in the brightness of different areas of the display panel, resulting in uneven brightness and darkness; the chromaticity mura refers to the inconsistent chromaticity of different areas of the display panel, resulting in color cast. [0003] At present, for the mura defect, it is mainly to eliminate the brightness mura. During the luminance mura elimination process, a compensation coefficient table is generated by a compensation alg...

Claims

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Application Information

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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
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