Direct-type LED backlight color uniformity correction system and direct-type LED backlight color uniformity correction method

An LED backlight and color uniformity technology, which is applied in the field of direct-lit LED backlight color uniformity correction systems, can solve problems such as high cost and complex system, and achieve the effects of low cost, simple implementation method and cost reduction.

Inactive Publication Date: 2010-04-21
IRICO
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  • Abstract
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Problems solved by technology

This technology is relatively complex for the whole system, and additional devices (

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  • Direct-type LED backlight color uniformity correction system and direct-type LED backlight color uniformity correction method
  • Direct-type LED backlight color uniformity correction system and direct-type LED backlight color uniformity correction method
  • Direct-type LED backlight color uniformity correction system and direct-type LED backlight color uniformity correction method

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Embodiment Construction

[0018] Such as figure 1 As shown, the system of the present invention includes a color measurement device 1 and an LED backlight liquid crystal display module 2 optically connected to it. Wherein, the LED backlight liquid crystal display module 2 includes an LED backlight unit, an LED backlight drive control unit for driving the LED backlight unit, and a liquid crystal display; The color data of the LED backlight liquid crystal display module 2 is obtained and stored, and the stored data is analyzed and processed to obtain a correction coefficient.

[0019] When the liquid crystal display is working normally, each LED backlight unit is multiplied by the correction coefficient on the basis of the statistical data of the original algorithm to obtain the actual data of the backlight. In order to achieve the consistency of backlight color.

[0020] The color measurement device 1 of the present invention adopts a luminance and chromaticity tester, and the liquid crystal display o...

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Abstract

The invention relates to a direct-type LED backlight color uniformity correction system and a direct-type LED backlight color uniformity correction method. The direct-type LED backlight color uniformity correction system is characterized by comprising an LED backlight source liquid crystal display module (2) and a color testing device (1) optically connected with the LED backlight liquid crystal display module mutually, wherein the LED backlight source liquid crystal display module (2) comprises an LED backlight source unit, an LED backlight source driving control unit for driving the LED backlight source unit and a liquid crystal display screen; and the color testing device (1) tests the color data of the LED backlight source liquid crystal display module (2) through an optical lens and matched testing software and stores the data, and the stored data is analyzed to obtain a correction coefficient. The system and the adopted method have simple implementation and low cost, and are suitable to be used in mass production.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display backlight sources, in particular to a color uniformity correction system and method for direct-lit LED backlight sources. Background technique [0002] LCD display technology, as a non-self-illuminating display technology, needs a backlight source to realize the display function. With the continuous development of liquid crystal display technology, the application fields of liquid crystal displays, especially color liquid crystal displays, are also constantly expanding. Driven by the liquid crystal display market, the backlight industry is also showing prosperity. As a kind of backlight with development potential, LED backlight has great research value and significance. However, color and brightness uniformity becomes a focal point when using colored LED backlights. Color and brightness uniformity problems will directly affect the image quality of LCD monitors. Therefore, it is ...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20H05B37/02G02F1/13G01J3/46
Inventor 李兵
Owner IRICO
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