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Method for improving color depth of LCD device

A liquid crystal display device and technology of color depth, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve problems such as unfavorable cost control, and achieve the effect of high-bit display

Inactive Publication Date: 2008-09-03
NANJING CEC PANDA LCD TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

By analogy, 1023 resistors are required to achieve 10bit color depth, nearly three times more than the 255 resistors required by 8bit, which is very unfavorable for circuit implementation and product cost control

Method used

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  • Method for improving color depth of LCD device
  • Method for improving color depth of LCD device
  • Method for improving color depth of LCD device

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Embodiment Construction

[0036] The invention is a method for improving color depth based on dynamic γ control technology. By analyzing the image signals of different contrasts, it is found that many bias resistors in the liquid crystal display device do not play a role in the color exquisiteness and richness of the image. Therefore, simply pursuing the number of high-bit-scale resistors cannot well improve the display quality. Accordingly, according to the color depth of the liquid crystal display device of the present invention, the image is firstly divided into regions according to the histogram analysis of the image signal, and then the γ reference voltage and the reference resistance are dynamically allocated, and the low γ reference resistance is used to realize the high ratio characteristics. Deep display.

[0037] Reference image 3 As shown, it shows a method for improving the color depth of a liquid crystal display device according to an embodiment of the present invention. The method includes th...

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Abstract

The invention relates to a method improving color depth for a liquid crystal display device, comprising the steps of: firstly, obtaining input image data; then undergoing dynamic Gamma Correction for the image signal; then dividing gray scale number corresponding to a reference display precision bit value into a plurality of gray scale intervals; after that, determining the display precision bit value according to intensity of the gray scale distribution data in the plurality of gray scale intervals; in addition, re-allocating Gamma reference voltage to the each gray scale interval according to the display precision bit value of each gray scale interval; and finding the corresponding LUT table according to the Gamma reference voltage re-allocated for each gray scale interval so as to obtain the corresponding output data value.

Description

Technical field [0001] The invention relates to a method for improving the color depth of a liquid crystal display device, in particular to a method for improving the color depth of a picture based on a dynamic gamma control technology. Background technique [0002] Display devices have always been in wide demand as personal computer monitors and televisions, and their technology has also developed rapidly. Cathode ray tube (CRT) displays have monopolized the display market for many years because of their excellent display quality and technological maturity. However, in recent years, due to the market trend of light, thin, short, small, beautiful and low power consumption. Therefore, thin film transistor liquid crystal display (TFT-LCD) with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation has gradually become the mainstream of the market. [0003] Various display devices such as CRT displays and LCD d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G5/06
Inventor 张克然徐伟李松
Owner NANJING CEC PANDA LCD TECH
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