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Method for decreasing LCD display distortion

A liquid crystal and conversion circuit technology, applied in the field of reducing LCD display distortion, can solve problems such as LCD display distortion, and achieve the effect of cost saving

Inactive Publication Date: 2006-09-27
PANDA ELECTRONICS GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is: in order to solve the above-mentioned LCD display distortion problem, propose a kind of using local expansion method to control the display of LCD

Method used

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  • Method for decreasing LCD display distortion
  • Method for decreasing LCD display distortion
  • Method for decreasing LCD display distortion

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Embodiment Construction

[0015] It can be realized by applying EPSON E06070 and E07052KE in three-chip LCD rear projection products. E06070 provides a 10bit D / A conversion, digital serial-to-parallel conversion and level amplification functions, while E07052 provides brightness, contrast adjustment, color uniformity adjustment, three-way independent γ adjustment and other circuits. Among them, the independent gamma adjustment of E07052 integrates 3×257 10bit RAM spaces in E07052, and the gamma adjustment values ​​of 257 input values ​​corresponding to R, G, B, 0, 4, 8...4N...1010, 1024 are written into RAM respectively , while the 4N+1, 4N+2, 4N+3... values ​​are calculated by interpolation. By connecting the 8-bit signal output by SCALER to the upper 8 bits of E07052, using the gamma transformation method described in this method, the output 10-bit signal is connected to E06070 to achieve true 8-bit color resolution.

[0016] That is to say, based on the display mechanism of the LCD display itself, ...

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Abstract

This invention relates to a method for decreasing LCD display distortion. Wherein, changing the forced voltage on liquid crystal ends to control the LCD; taking gamma conversion to the image signal by the front circuit to provide control voltage, controlling the conversion to set lower / higher code density on slow / serious varying interval respectively, and expressing the bit length from n into n+2; applying one DA circuit of n+2 bit on back of the gamma conversion. This invention saves much cost with almost same display effect.

Description

1. Technical field [0001] The invention relates to a method for controlling LCD display, in particular to a method for reducing LCD display distortion. 2. Background technology [0002] As a new type of display device, liquid crystal display has been widely used due to its advantages of lightness, thinness and planarization. The progress of technology has greatly improved the resolution, brightness, contrast and other indicators of liquid crystal display, but the shortcomings of small dynamic range and insufficient layering have always plagued liquid crystal display. [0003] As we all know, liquid crystals change their molecular orientation by applying an electric field (voltage) at both ends, thereby causing the optical axis to rotate and changing the direction in which polarized light passes to achieve photoelectric modulation. Its photoelectric response curve is shown in figure 1 . It can be seen from the figure that the photoelectric sensitivity of the liquid crystal...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/36
Inventor 李志农刘琍
Owner PANDA ELECTRONICS GROUP
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