Displacement register capable of reducing voltage bias effective voltage

A shift register and low-potential technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as abnormal operation of pixels in the panel and misoperation of shift register circuits, increase the time to reach steady state, and reduce bias The effect of the pressure effect

Active Publication Date: 2007-09-26
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, due to the circuit structure of the shift register 10 of the prior art, the CK frequency signal pull-down module 12 or the XCK frequency signal pull-down module 14 may increase with the working time, causing the transistors therein to be damaged due to the bias effect (Stress). Ineffective, causing the entire shift register to malfunction, causing the corresponding pixels in the panel to fail to operate normally

Method used

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  • Displacement register capable of reducing voltage bias effective voltage
  • Displacement register capable of reducing voltage bias effective voltage
  • Displacement register capable of reducing voltage bias effective voltage

Examples

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Embodiment Construction

[0029] Please refer to FIG. 2 , which is a functional block diagram of a liquid crystal display 200 . The liquid crystal display 200 includes a liquid crystal display panel 212 , a gate driver (Gate Driver) 214 and a source driver (Source Driver) 216 . The liquid crystal display panel 212 includes a plurality of pixels, and each pixel includes three pixel units 220 respectively representing three primary colors of red, green, and blue (RGB). The gate driver 214 outputs scanning signals to turn on the transistors 222 in each column sequentially, and at the same time, the source driver 216 outputs corresponding data signals to a whole column of pixel units 220 to charge them to their respective required voltages to display different grays. order. After the charging of the same row is completed, the gate driver 214 will turn off the scan signal of the row, and then the gate driver 214 will output the scan signal to turn on the transistor 222 of the next row, and then the pixel u...

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Abstract

This invention discloses one displacement register, which comprises one first frequency signal pull down module, one second frequency signal pull down module, one first main pull down module, one second pull down module and one discharge circuit, wherein, when the first and second pull down modules generate abnormal circuit to make the register not capable of discharge, the discharge circuit can proceed to lower the register circuit bias effect.

Description

technical field [0001] The invention relates to a shift register, in particular to a shift register which uses a discharge circuit to reduce the bias effect (Stress) and increase the output stage (Output Stage) steady-state time. Background technique [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products. Liquid crystal displays have gradually become widely used in various electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens. monitor with high resolution color screen. [0003] The shift register (shift register) is an important structure in the driving circuit of the liquid crystal display panel, which is used to drive the display circuits of all levels in the liquid crystal display panel, so the circuit design of the shift register has a decisive impact on the performance of the liquid crystal display panel . [000...

Claims

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Application Information

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IPC IPC(8): G11C19/28G09G3/30
Inventor 陈静茹张峻荣张立勋陈世烽郑咏泽
Owner AU OPTRONICS CORP
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