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Method and system for improving visual angle complexion color shift of liquid crystal display

A technology of LCD screen and skin color, applied in the direction of color signal processing circuit, instrument, static indicator, etc., can solve the problem of exceeding, not using low color cast, etc.

Active Publication Date: 2013-05-15
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the design of LCD modules, low color shift (LowColorShift) design is usually not used for small and medium-sized products, so the test results of squint angle shift of LCD screens usually exceed the specifications of TV manufacturers.

Method used

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  • Method and system for improving visual angle complexion color shift of liquid crystal display
  • Method and system for improving visual angle complexion color shift of liquid crystal display
  • Method and system for improving visual angle complexion color shift of liquid crystal display

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Embodiment Construction

[0022] see figure 2 , figure 2 It is a flow chart of a method for improving the color cast of the viewing angle of a liquid crystal screen according to the present invention. Such as figure 2 As shown, the method for improving the color cast of the viewing angle of the liquid crystal screen in the present invention comprises the following steps:

[0023] Step S1: Obtain the red, green, blue and white gamma curves of the front view angle of the skin color screen of the liquid crystal screen under the backlight.

[0024] In step S1, specifically, the luminance and chromaticity of the red, green, blue and white 0-255 gray scales of the red, green, blue and white 0-255 grayscale brightness and chromaticity of the front view angle of the skin color screen under the backlight are acquired, so as to obtain the corresponding gamma curve. Wherein, the backlight in this embodiment is preferably a China Star Optoelectronics Technology (CSOT) backlight, and the gamma value is prefer...

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Abstract

The invention discloses a method and a system for improving visual angle complexion color shift of a liquid crystal display. The method is as follows: comparing gamma curves of front angles and squint angles of red, green and blue after adjustment according to initial white balanced voltage with 0-255 gray scale chrominance; and changing the partial pressure proportion of white balanced voltage of the blue according to color shift results so that color shift values of the squint angles of complexion pictures of the liquid crystal display can be within a range of specification requirements all the time. By means of the method, the color shift values of the squint angles of the complexion pictures of the liquid crystal display can be within the range of the specification requirements all the time.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and system for improving the skin color shift of the viewing angle of a liquid crystal screen. Background technique [0002] At present, the liquid crystal cell of the LCD screen includes red, green and blue color films of different thicknesses, and the thickness of the blue color film is thicker than that of the red and green color films, so the thickness of the liquid crystal corresponding to the blue color film is thicker than that of the red and green color films. The thickness of the liquid crystal corresponding to the color filter is small. This design results in a Z inversion in the blue tristimulus values, see figure 1 , figure 1 is the relationship between the blue tristimulus value and the voltage, where Z is reversed at high voltage. This results in a color cast in the LCD screen. [0003] At present, TV manufacturers often evaluate the quality of the LCD...

Claims

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Application Information

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IPC IPC(8): G09G3/36H04N9/73
CPCG09G3/36H04N9/73G09G2320/0242G09G2320/0673G09G2320/068
Inventor 陈黎暄康志聪
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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