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Color correction method for LED liquid crystal display device

A liquid crystal display and color correction technology, which is applied in the field of color correction and can solve the problems that white balance cannot handle single color, light color, and the display effect of single color is very different.

Inactive Publication Date: 2012-03-21
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the white balance can't handle monochrome, so when different manufacturers use different three-color LEDs, the display monochrome effect is very different, some are very dark, and some are very light.

Method used

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  • Color correction method for LED liquid crystal display device
  • Color correction method for LED liquid crystal display device
  • Color correction method for LED liquid crystal display device

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Embodiment Construction

[0051] The present invention is described in further detail below in conjunction with accompanying drawing:

[0052] see figure 1 , the algorithm flow chart of the present invention is as follows figure 1 As shown, the conversion of LED liquid crystal display equipment to PAL system color is completed. Whole implementation process of the present invention is as follows:

[0053] (1) Measure the red color coordinates (Yr0, Ur0, Vr0) of the PAL system and the red color coordinates (Yr, Ur, Vr) of the LED liquid crystal display device to be corrected with a colorimeter;

[0054] (2) Add green component Rg_add=(Rr1-Rr0)Gr0 / Rr0 and blue component Rb_add=(Rr1-Rr0)Br0 / Rr0 in the red of LED liquid crystal display device; Wherein,

[0055] Rr1=1.0069Yr-0.0022Ur+1.1436Vr,

[0056] Rr0=1.0069Yr0-0.0022Ur0+1.1436Vr0,

[0057] Gr0=0.9965Yr0-0.3762Ur0-0.5826Vr0,

[0058] Br0=Yr0+2.024Ur0+0.0059Vr0,

[0059] Gr1=0.9965Yr-0.3762Ur-0.5826Vr,

[0060] Br1=Yr+2.024Ur+0.0059Vr;

[0061] (3...

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Abstract

The invention discloses a color correction method for an LED liquid crystal display device, which comprises the following steps of: (1) measuring a conversion coefficient [1, Rg, Rb] for converting a red color value into PAL-system red, a conversion coefficient [Gr, 1, Gb] for converting a green color value into PAL-system green, and a conversion coefficient [Br, Bg, 1] for converting a blue color value into PAL-system blue of the display device to be corrected; (2) combining the three measured conversion coefficients to form a color conversion matrix; and (3) multiplying the red, green and blue color values of the original display device by the conversion matrix F to obtain the corrected PAL red, green and blue color values. The correction method for correcting the LED liquid display device avoids the effects of over-rich or over-light single color which does not conform to real colors due to the difference of adopted LED primary colors; and the corrected color effect is basically consistent with PAL-system colors of the conventional CRT.

Description

Technical field: [0001] The invention belongs to the field of LED liquid crystal displays and relates to a color correction method for LED liquid crystal display devices. The data output through this color correction can avoid the effect that a single color in the image is too thick or too light due to the difference in the primary color of the LED used, which does not conform to the actual color. Background technique: [0002] Due to various advantages, LED-backlit LCD TVs are gradually occupying the market. However, due to the differences in the LEDs used by various manufacturers, especially the differences in the center wavelengths of the three-color LEDs, the display equipment will display a single color such as red, green, and blue. , and sometimes even seriously out of reality. [0003] Various manufacturers have always used white balance to deal with the color mixing of the three primary colors, but the white balance can only deal with the color mixing, and can make...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64G09G3/36
Inventor 郑志华
Owner IRICO