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Gamma curve correction method and device

A gamma curve and correction method technology, which is applied to static indicators, instruments, etc., can solve the problems of long correction time of the gamma curve, achieve the effects of improving production efficiency and product pass rate, accurate correction results, and correcting white balance

Active Publication Date: 2021-12-21
CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a gamma curve correction method and device for the problem of long gamma curve correction time

Method used

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

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Embodiment Construction

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided 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 one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the ...

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Abstract

The invention relates to a gamma curve correction method, comprising selecting at least two different gray scales in the full gray scale range of a display panel color image as characteristic gray scales; measuring sub-pixel information of the characteristic gray scales to obtain the characteristic gray scales red sub-pixel information, green sub-pixel information and blue sub-pixel information; and then use the interpolation method to calculate the red sub-pixel information, green sub-pixel information and blue sub-pixel information of other gray scales except the characteristic gray scale ; Combined with the lookup table calculation formula, use the recursive method to calculate the corresponding lookup tables for the red sub-pixels, green sub-pixels, and blue sub-pixels of each gray scale; store the respective look-up tables in the memory corresponding to the gamma curve , to obtain the corrected gamma curve; test the corrected gamma curve, compare it with the target gamma curve, and if the product specification requirements are met, the calibration process ends. The correction method shortens the correction time, has accurate correction results, and improves the production efficiency and product pass rate of the panel.

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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3607G09G2320/0276
Inventor 李嘉航
Owner CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST