Chrominance adjustment method of liquid crystal display and device

A liquid crystal display and adjustment method technology, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of no formula, low adjustment efficiency, no clear target chromaticity value, etc.

Active Publication Date: 2016-02-03
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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  • Chrominance adjustment method of liquid crystal display and device
  • Chrominance adjustment method of liquid crystal display and device
  • Chrominance adjustment method of liquid crystal display and device

Examples

Experimental program
Comparison scheme
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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] x i ′ = x M ′ + x N ′ - x M ′ x N - x M * ( x i - x ...

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 critical 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

The invention provides a chrominance adjustment method of a liquid crystal display and a device. The method comprises steps of measuring chrominance coordinates of the minimum gray-scale value and the maximum gray-scale value of a to-be-adjusted display; setting the chrominance coordinate of the critical gray-scale value of the to-be-adjusted display to be the chrominance coordinate of the maximum gray-scale value; calculating the chrominance coordinates of all gray-scale values between the minimum gray-scale value and the maximum gray-scale value of the to-be-adjusted display according to the chrominance coordinates of the minimum gray-scale value and the critical gray-scale value of the to-be-adjusted display and the reference chrominance coordinates between the gray-scale value and the critical gray-scale value of a standard display; and adjusting the chrominance of the to-be-adjusted display according to the chrominance coordinates of the minimum gray-scale value and the critical gray-scale value of the to-be-adjusted display. According to the invention, the chrominance of a display can be automatically and precisely adjusted via a device, thereby greatly increasing chrominance debugging efficiency of the display.

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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IPC IPC(8): G09G5/02
CPCG09G5/02
Inventor宁超曹谦苏文华姚键潘柏宇王冀
OwnerALIBABA (CHINA) CO LTD