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Chromaticity adjustment method and device for liquid crystal display

A technology of liquid crystal display and adjustment method, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of no formula, difficult instrument adjustment, no clear target chromaticity value, etc., and achieve good optical parameters. , The effect of improving the efficiency of chroma debugging

Active Publication Date: 2018-01-26
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for the adjustment of chromaticity, since the change process of chromaticity at low gray scale is not linear, and there is no clear formula, that is, there is no clear target chromaticity value, it is difficult to use the instrument to adjust
[0006] In this regard, the current common practice is to adjust the low gray scale step by step while looking at it with human eyes, so that the chromaticity basically maintains a smooth transition. This not only reduces the adjustment efficiency, but also may cause problems due to the visual differences of each person. The adjusted chromaticity also has a large difference

Method used

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  • Chromaticity adjustment method and device for liquid crystal display
  • Chromaticity adjustment method and device for liquid crystal display
  • Chromaticity adjustment method and device for liquid crystal display

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Embodiment 1

[0057] figure 1 A flowchart showing a method for adjusting chromaticity of a liquid crystal display according to an embodiment of the present invention. Such as figure 1 As shown, the chromaticity adjustment method may mainly include the following steps:

[0058] Step S100, measuring the chromaticity coordinates of the display screen to be adjusted at the minimum gray scale value and the maximum gray scale value;

[0059] Step S101, setting the chromaticity coordinates of the critical grayscale value of the display screen to be adjusted as the chromaticity coordinates of the maximum grayscale value;

[0060] Step S102, according to the chromaticity coordinates of the minimum grayscale value and the critical grayscale value of the display screen to be adjusted, and the reference chromaticity coordinates between the minimum grayscale value and the critical grayscale value of the standard display screen, respectively calculate the The chromaticity coordinates of each gray-sc...

Embodiment 2

[0079] The main difference between this embodiment and the above-mentioned embodiment 1 is that in the above-mentioned first chromaticity coordinate calculation step, the following formula 1 can be used to calculate the grayscale values ​​between the minimum grayscale value and the critical grayscale value of the display screen to be adjusted. The first chromaticity coordinate of the order value,

[0080] Formula 1

[0081] Wherein, the above formula 1 can be specifically derived from the following formula 3,

[0082] Formula 3

[0083] In the above formulas 1 and 3, M is the minimum gray scale value, N is the critical gray scale value, and M

[0084] x M Represents the first chromaticity coordinate in the reference chromaticity coordinates of the minimum grayscale value M of the standard display screen, x i Represents the first chromaticity coordinate in the reference chromaticity coordinates of each grayscale value i between the minimum grayscale...

Embodiment 3

[0130] Figure 5 A structural block diagram of a chromaticity adjustment device for a liquid crystal display according to an embodiment of the present invention is shown. Such as Figure 5 As shown, the chromaticity adjustment device 50 of the liquid crystal display mainly includes: a measurement module 51 , a setting module 52 , a chromaticity coordinate calculation module 53 and a chromaticity adjustment module 54 . Among them, the measurement module 51 is mainly used to measure the chromaticity coordinates of the display screen to be adjusted at the minimum gray scale value and the maximum gray scale value; the setting module 52 can be connected with the measurement module 51, and is mainly used to set the threshold The chromaticity coordinates of the grayscale value are set to the chromaticity coordinates of the maximum grayscale value; the chromaticity coordinate calculation module 53 can be connected with the measurement module 51 and the setting module 52 respectively,...

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Abstract

A chroma adjustment method and device for a liquid crystal display screen. The method comprises: measuring chroma coordinates at a minimum gray-scale value and a maximum gray-scale value of a display screen to be adjusted; setting chroma coordinates of a critical gray-scale value of the display screen to be adjusted to be the chroma coordinates of the maximum gray-scale value; according to the chroma coordinates of the minimum gray-scale value and the critical gray-scale value of the display screen to be adjusted, and reference chroma coordinates between a minimum gray-scale value and a critical gray-scale value of a standard display screen, respectively calculating chroma coordinates of each gray-scale value between the minimum gray-scale value and the critical gray-scale value of the display screen to be adjusted; and according to the chroma coordinates of each gray-scale value between the minimum gray-scale value and the critical gray-scale value of the display screen to be adjusted, adjusting the chroma of the display screen to be adjusted. By means of the chroma adjustment method and device for a liquid crystal display screen, the chroma of a display screen can be automatically and accurately adjusted by utilizing an instrument, so that the chroma debugging efficiency of the display screen can be greatly improved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a method and device for adjusting the chromaticity of a liquid crystal display. Background technique [0002] As a widely used display device, a liquid crystal display has penetrated into various fields of people's lives. It can display rich colors, and can also reproduce rich details of low-gray-scale scenes (pictures) and high-gray-scale scenes. The human eye is especially sensitive to low-grayscale images, and can easily distinguish color and brightness deviations in dark images. Therefore, it is particularly important to deal with low gray levels in the process of debugging the LCD display, which will directly affect the performance of the display. [0003] At present, the method of adjusting low grayscale chromaticity and brightness is mainly based on the ultimate goal of not observing obvious taste problems with the human eye, or using instruments to measure the LCD ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/02
CPCG09G5/02
Inventor 宁超曹谦苏文华姚键潘柏宇王冀
Owner ALIBABA (CHINA) CO LTD
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