Gamma curve correction method and device thereof

A technology of gamma curve and correction method, applied in instruments, static indicators, etc., can solve the problem of long correction time of gamma curve, and achieve the effect of improving production efficiency and product throughput, shortening correction time, and correcting white balance.

Active Publication Date: 2019-01-08
CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST +1
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  • Abstract
  • Description
  • Claims
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[0003] Based on this, it is necessary to provide a gamma curve correcti

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  • Gamma curve correction method and device thereof
  • Gamma curve correction method and device thereof
  • Gamma curve correction method and device thereof

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[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the invention. The terms used in the description of the invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more related listed i...

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Abstract

The invention relates to a gamma curve correction method, which comprises the following steps: selecting at least two different gray scales as characteristic gray scales in the whole gray scale rangeof a color image of a display panel. The sub-pixel information of the feature gray scale is measured to obtain the red sub-pixel information, the green sub-pixel information and the blue sub-pixel information of the feature gray scale. Then, the red sub-pixel information, green sub-pixel information and blue sub-pixel information of other gray scales except the characteristic gray scale are calculated by interpolation method. Combined with the formula of look-up table, the corresponding look-up tables of red sub-pixel, green sub-pixel and blue sub-pixel of each gray scale are obtained by recursive method. Storing a respective look-up table into a memory corresponding to the gamma curve to obtain a corrected gamma curve; Test the calibrated gamma curve and compare it with the target gamma curve. If it meets the requirements of the product specification, the calibration process is finished. The calibration method shortens the calibration time, improves the production efficiency and product pass rate of the panel, and the calibration result is accurate.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gamma curve correction method and device. Background technique [0002] The Gamma Curve is the most important photoelectric conversion curve in the display field. Generally speaking, the gamma curve of the display will be designed at gamma 2.2 to effectively compensate the current display system so that the human eye can obtain the best display effect. However, factors such as the liquid crystal cell gap and pre-tilt angle will affect the gamma curve characteristics of the display, resulting in a large variation range of the gamma curve, making the control of the gamma curve quite difficult. Therefore, in order to increase the pass rate of display products conforming to the gamma curve, the control over the display panel manufacturing process is becoming more and more stringent. The traditional gamma voltage correction method needs to measure each grayscale value of ...

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3607G09G2320/0276
Inventor 李嘉航
Owner CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST
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