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LED display screen color matching method based on chromaticity coordinate grading mixing

A technology of LED display and chromaticity coordinates, applied in static indicators, instruments, etc., can solve the problems of display color deviation and insufficient number of display screens, and achieve the effect of solving the problem of color deviation.

Active Publication Date: 2020-03-17
CHANGCHUN CEDAR ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a LED display color matching method based on chromaticity coordinate classification and mixing. The problem of color deviation of the display caused by the mixed use of light-emitting chips

Method used

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  • LED display screen color matching method based on chromaticity coordinate grading mixing
  • LED display screen color matching method based on chromaticity coordinate grading mixing
  • LED display screen color matching method based on chromaticity coordinate grading mixing

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Embodiment Construction

[0035] like image 3 As shown, the LED display screen color matching method based on chromaticity coordinate step-by-step mixing of the present invention comprises the following steps:

[0036] Step 1. Use the red, green and blue light-emitting chips classified by chromaticity coordinates to form a display screen, and record the type of red primary color light-emitting chips used to form the display screen as k r , k r =1,2,3...n r , the type of green-color light-emitting chip used is k g , k g =1,2,3...n g , the type of blue primary color light-emitting chip used is k b , k b =1,2,3...n b . View and record the chromaticity coordinates (x ri ,y ri ), i=1,2,3...kr , the chromaticity coordinates (x gi ,y gi ), i=1,2,3...k g , the chromaticity coordinates (x bi ,y bi ), i=1,2,3...k b .

[0037] Step 2, the chromaticity coordinates (x ri ,y ri ), the chromaticity coordinates (x gi ,y gi ) and the chromaticity coordinates (x bi ,y bi ) is drawn according to t...

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Abstract

The invention relates to an LED display screen color matching method based on chromaticity coordinate grading mixing. The method comprises the following steps that multiple kinds of three-primary-color light-emitting chips form a display screen; drawing chromaticity coordinate points of all kinds of light-emitting chips in a CIE1931 chromaticity plane to form three coordinate stacks; drawing inscribed triangles of the three coordinate stacks and taking vertex coordinates of the inscribed triangles as chromaticity coordinate target values of color matching of three primary colors; solving a tristimulus value of each primary color of various types according to the corrected brightness of the three-primary-color light-emitting chip, and calculating a target tristimulus value of each primary color according to the chromaticity coordinate target value; and obtaining a color matching coefficient matrix according to the chromaticity coordinate target value and the target tristimulus value, and multiplying the color matching coefficient matrix of each type by the correction coefficient of each light-emitting chip of the type to realize color matching of different types of chromaticity coordinate grading light-emitting chips of the display screen. According to the invention, the technical problem of color deviation caused by mixed use of different types of light-emitting chips is solved.

Description

technical field [0001] The invention belongs to the technical field of LED display acquisition and correction, and relates to a color matching method of an LED display screen. Background technique [0002] The classification of LED chromaticity coordinates is a method to solve the problem of discrete chromaticity of LED itself. According to the principle that each color corresponds to a chromaticity coordinate, the method obtains the respective chromaticity coordinates of all LED light-emitting chips and classifies them to ensure that the LED light-emitting chips in the same category display the same color and there is no problem of color deviation. Therefore, if the LED light-emitting chips of the same type are used to form a display screen, the display screen has good color uniformity and good display quality. [0003] However, in order to ensure that the same category of light-emitting chips does not have chromaticity problems at all, it is necessary to narrow the classi...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0666
Inventor 毛新越程宏斌郭贵新丁铁夫陆文文
Owner CHANGCHUN CEDAR ELECTRONICS TECH CO LTD
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