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Level adjusting circuit of common signal of liquid crystal display (LCD)

A common signal and level adjustment technology, applied to static indicators, instruments, etc., can solve the problem that the flickering of the LCD screen cannot be improved.

Inactive Publication Date: 2013-01-16
华映视讯(吴江)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above-mentioned liquid crystal display including two sub-pixels, the high-level voltage VcsH and the low-level voltage VcsL of the voltage signals VcsO and VcsE cannot change with the adjustment of the common voltage Vcom, so that the screen flicker of the liquid crystal display cannot be improved.

Method used

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  • Level adjusting circuit of common signal of liquid crystal display (LCD)
  • Level adjusting circuit of common signal of liquid crystal display (LCD)
  • Level adjusting circuit of common signal of liquid crystal display (LCD)

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Embodiment Construction

[0018] Certain terms are used throughout the specification and following claims to refer to particular components. Those of ordinary skill in the art will appreciate that manufacturers may refer to the same component by different terms. The description and the above claims do not use the difference in name as the way to distinguish the components, but the difference in the function of the components as the basis for the difference. The "comprising" mentioned throughout the specification and the above claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "electrical connection" here includes any direct and indirect electrical connection means. Therefore, if it is described in the text that a first device is electrically connected to a second device, it means that the first device can be directly connected to the second device, or indirectly connected to the second device through other devices or connection means.

[0019]...

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Abstract

The invention discloses a level adjusting circuit of a common signal of a liquid crystal display (LCD). The level adjusting circuit can generate a first level voltage and a second level voltage according to a common voltage so as to generate a first common signal and a second common signal. Each pixel of the LCD comprises two storage capacitors which are sued for respectively receiving the first common signal and the second common signal. The level adjusting circuit of the common signal generates the first level voltage and the second level voltage by using an operation amplifier and one or two Zener diodes. Since the first level voltage and the second level voltage have the same voltage difference relative to the common voltage, the flash phenomenon of the LCD can be reduced.

Description

[0001] The present invention is a divisional application of the Chinese invention patent application with the application number 200910136368.X, the application date is May 12, 2009, and the invention name is "the level adjustment circuit of the common signal of the liquid crystal display". technical field [0002] The invention relates to a level adjustment circuit of a common signal of a liquid crystal display, in particular to a level adjustment circuit of a swing common signal of a liquid crystal display. Background technique [0003] Please refer to figure 1 , figure 1 A schematic diagram of a pixel of a prior art thin film transistor liquid crystal display. Each pixel of the liquid crystal display includes a first sub-pixel and a second sub-pixel. The first sub-pixel includes a thin film transistor 16a, a liquid crystal capacitor C1cO and a storage capacitor CcsO. The second sub-pixel includes a thin film transistor 16b, a liquid crystal capacitor C1cE and a storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 陈屏先陈弼先
Owner 华映视讯(吴江)有限公司