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Method for inserting black picture

A screen and pixel technology, applied in the field of liquid crystal displays that can be inserted into a black screen, can solve the problems of complex drive mode and cost increase of the scan driver

Inactive Publication Date: 2008-07-30
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will complicate the driving method of the scan driver for controlling the voltage of the scan line in order to drive the voltage change of the scan line and the previous scan line, thereby increasing the cost

Method used

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  • Method for inserting black picture
  • Method for inserting black picture

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Experimental program
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Embodiment Construction

[0021] Please refer to image 3 , which is a flow chart of the method for inserting a black frame according to the present invention. This method of inserting a black screen is used for LCD monitors. A liquid crystal display has one pixel. The pixel includes a liquid crystal capacitor Clc. First, as shown in step 31 , a standard common potential is provided to the first terminal of the liquid crystal capacitor during a normal period. Next, as shown in step 32 , a data signal is provided to the second terminal of the liquid crystal capacitor, so that the liquid crystal capacitor has a first cross voltage. Finally, as shown in step 33, during the dark state period, a first potential different from the standard common potential is provided to the first terminal of the liquid crystal capacitor, and the voltage at the second terminal of the liquid crystal capacitor is correspondingly changed, so that the voltage across the liquid crystal capacitor The voltage changes to a secon...

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Abstract

The liquid crystal device has a pixel, said pixel includes a liquid crystal capacitor. The method for inserting black picture includes the following steps: firstly, in normal-state slot providing a standard common potential to first end of liquid crystal capacitor, then providing a data signal to second end of liquid crystal capacitor so as to make liquid crystal capacitor have a first cross-voltage, finally, in a dark-state slot providing a potential different from standard common potential to first end of capacitor, the voltage of second end of liquid crystal capacitor is correspondently changed so as to make the cross-voltage of liquid crystal capacitor be changed into a second cross-voltage, the pixel is dark state in dark-state slot.

Description

technical field [0001] The invention relates to a liquid crystal display capable of avoiding afterimages and a method thereof, and particularly relates to a liquid crystal display capable of inserting a black screen and a method thereof. Background technique [0002] The imaging principle of a Liquid Crystal Display (LCD) is that voltage affects the arrangement of liquid crystal molecules, causing the molecular rods to twist, controlling the penetration of light to obtain various color performances. Please refer to figure 1 , which shows the waveform diagram of the pixel voltage, the common voltage and the data signal of the existing liquid crystal display. The periods t1 and t2 are one frame period. The voltage difference between the data signal data and the common voltage Vcom0 is the pixel voltage Vp. The pixel voltage Vp drives the pixels. Alternatively, the voltage difference between the data signal data' and the common voltage Vcom0 is the pixel voltage Vp'. The pix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36
Inventor 曾贵圣刘竹育陈明鸿陈文彬林宗正
Owner AU OPTRONICS CORP