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Method and device for automatically adjusting white balance of LCD (Liquid Crystal Display)

An automatic white balance, liquid crystal display technology, applied in TVs, electrical components, color signal processing circuits, etc., can solve the problems of low G value, large influence of brightness, and reduced brightness of LCD TVs, and achieve high efficiency and energy efficiency. Effect

Inactive Publication Date: 2014-01-08
BOE TECH GRP CO LTD +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0009] The prior art has the following problems: It can be seen from the above relationship that the values ​​of x and y have a certain range, and there are many combinations of values ​​of R, G and B to meet the requirements of x and y values, that is, to meet the color temperature value requirements of LCD TVs, while The ratio of R value, G value and B value to the brightness is roughly 3:6:1, so the G value has the greatest influence on the brightness. If the R value, G value and B value are not limited, the G value will be low In this case, the brightness of the LCD TV is reduced, thereby reducing the energy efficiency of the LCD TV

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  • Method and device for automatically adjusting white balance of LCD (Liquid Crystal Display)

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Embodiment Construction

[0070] In order to enable those skilled in the art to better understand the technical solution of the present invention, a method and device for automatic white balance adjustment of a liquid crystal display provided by the present invention will be further described in detail below with reference to the accompanying drawings.

[0071] figure 1 A schematic flow chart of an automatic white balance adjustment method for a liquid crystal display provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes:

[0072] Step S101 , displaying a test picture according to a preset green gain value.

[0073] Step S102: Measure the test picture to obtain the color temperature coordinates of the test picture.

[0074] Specifically, the test picture can be measured by a color analyzer to obtain the color temperature coordinate values ​​of the test picture when the LCD TV to be adjusted is displayed, that is, the first coordinate value X and the sec...

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Abstract

The invention provides a method and a device for automatically adjusting the white balance of an LCD (Liquid Crystal Display). The method comprises the steps of displaying a test picture according to a green gain value which is preset; measuring the test picture and obtaining color temperature coordinate values of the test picture; adjusting a red gain value and / or a blue gain value according to the color temperature coordinate values. According to the technical scheme provided by the invention, the brightness of an LCD television can be increased, and the energy efficiency of the LCD television can be further increased.

Description

technical field [0001] The invention relates to the field of liquid crystal television display, in particular to an automatic white balance adjustment method and device for a liquid crystal display. Background technique [0002] Due to the differences in LCD screens, when assembling the LCD screen into an LCD TV, in order to ensure that the color effect seen by the user is basically the same and there will be no color shift, after the LCD TV is assembled on the production line, the LCD TV needs to be adjusted. The TV automatically adjusts the white balance to make the LCD TV display normal colors and meet the requirements of cool, warm and standard color temperature. [0003] All LCD TV manufacturers have color temperature requirements for their own LCD TVs, for example, the standard color temperature generally requires 9300K. By adjusting the red gain value (R value), green gain value (G value), and blue gain value (B value), the color temperature value of the white field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/73H04N17/02
Inventor 张治国
Owner BOE TECH GRP CO LTD
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