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Corner cutting circuit in liquid crystal panel driving system and levelness adjusting system and method

A technology of liquid crystal panel and driving system, applied in the direction of instruments, static indicators, etc., can solve the problem of uneven uniformity of LCD panels, and achieve the effect of improving production quality

Inactive Publication Date: 2013-03-06
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The angle-cutting slope of the driving voltage waveform needs to be realized by changing the discharge resistor in the angle-cutting circuit, so the uniformity can only be applied to mass-produced LCD panels with the adjustment results of one LCD panel. The uniformity is different, and the LCD panel cannot achieve the best effect

Method used

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  • Corner cutting circuit in liquid crystal panel driving system and levelness adjusting system and method
  • Corner cutting circuit in liquid crystal panel driving system and levelness adjusting system and method
  • Corner cutting circuit in liquid crystal panel driving system and levelness adjusting system and method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0027] Such as image 3 Shown is a specific embodiment of the corner-cutting circuit in the panel drive system of the liquid crystal display device provided by the present invention. In this embodiment, the discharge resistor in the corner-cutting circuit is an adjustable resistor 10 with adjustable resistance. The adjustable resistor 10 is a digital resistor with relatively simple control. A digital resistor controller is provided outside the corner cutting circuit for directly adjusting the resistance value of the digital resistor. Of course, the adjustable resistor 10 can also be other types of adjustable resistors. The digital resistor includes a plurality of sub-resistors 11 connected in parallel, and each sub-resistor 11 is connected in series with a resistance adjustment switch 31, and the corresponding switch 31 is selected to obtain t...

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PUM

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Abstract

The invention discloses a corner cutting circuit in a liquid crystal panel driving system, and a levelness adjusting system and method; the corner cutting circuit comprises a discharge resistor; and the discharge resistor is an adjustable resistor with adjustable resistance. According to the corner cutting circuit in the liquid crystal panel driving system, the levelness adjusting system and method, because the discharge resistor of the corner cutting circuit in the liquid crystal panel driving system is changed into the adjustable resistor with the adjustable resistance, the discharge slope can be changed by adjusting the resistance of the discharge resistor, so that the levelness of a liquid crystal panel is changed; and in such manner, the discharge resistance can be adjusted without changing the discharge resistor, so that the levelness of each liquid crystal panel can be regulated, and the production quality of the liquid crystal panel is improved.

Description

technical field [0001] The invention relates to the field of manufacturing liquid crystal display devices, and more specifically, relates to a corner cutting circuit in a liquid crystal panel drive system and a uniformity adjustment system and method. Background technique [0002] In order to improve the uniformity of the LCD panel, it is necessary to reduce the feedback voltage and the linear variation effect. It is necessary to add a chamfering circuit to the driving system of the LCD, and adjust the slope of the driving voltage waveform through the chamfering circuit to make it chamfered, and then Scan lines output to the LCD panel. U.S. Patent No. 7,027,024 records that an angle-cutting circuit is added to the driving system of the LCD, and the driving voltage waveform is adjusted through the angle-cutting circuit so that the waveform has a certain slope (the slope here refers to the angle between the voltage waveform and the horizontal line, where 0 degrees and 90 degr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/34
CPCG09G3/36G09G3/3677G09G3/3696G09G2320/0233G09G2320/0693
Inventor 陈胤宏
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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