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Shift buffer

A technology of shift buffer and shift buffer unit, which is used in static memory, digital memory information, instruments, etc.

Active Publication Date: 2009-09-02
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the problem to be solved by the present invention is to provide a shift register, which can completely turn off the corresponding output transistor of each shift register unit when there is no output signal to the pixel, so as to improve the problem of false turn-on , to solve the problems of the prior art

Method used

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Experimental program
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Embodiment Construction

[0028] see figure 2 , figure 2 It is a circuit diagram of the shift register unit 100(n) of the first embodiment of the shift register of the present invention. The shift register of this embodiment can be applied to a gate driver of a liquid crystal display. The shift register includes a plurality of cascade-connected shift register units 100(n). The shift register unit 100(n) is used to output the output signal of the output terminal OUT(n-1) of the previous shift register unit 100(n-1) of each shift register unit 100(n) according to the frequency signal CK, (that is, the first control signal) and the output signal of the output terminal OUT(n+1) of the next stage shift register unit 100(n+1) of each shift register unit 100(n), from each shift register unit 100(n) The output terminal OUT(n) of the bit buffer unit 100(n) generates an output signal. When the first-stage shift register unit 100(1) receives the trigger start pulse Vst from the output terminal OUT(0), the s...

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Abstract

The invention discloses a shift buffer comprising a plurality of shift buffer units. The shift buffer units are serially coupled; each shift buffer unit comprises a lifting module, a first pull-down module, a second pull-down module and a third pull-down module; the lifting module is coupled with a first node and used for providing output signals according to frequency signals; the first pull-down module is coupled with the first node, a second node and a first power voltage and used for adjusting the potential of the first node to the first power voltage when the lifting module is closed; the second pull-down module is coupled with the second node and a second power voltage and used for adjusting the potential of the output end to the second power voltage when the lifting module is closed; the third pull-down module is coupled with the second node and a third power voltage and used for adjusting the potential of the second node to the third power voltage when the third pull-down module is started and energized.

Description

technical field [0001] The invention relates to a shift register, in particular to a shift register capable of reducing leakage current due to bias effects. Background technique [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products. Liquid crystal displays have gradually been widely used in various electronic devices such as televisions, mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens. application. [0003] see figure 1 , figure 1 A functional block diagram of a prior art liquid crystal display 10 . The liquid crystal display 10 includes a liquid crystal display panel 12 , a gate driver 14 and a source driver 16 . The liquid crystal display panel 12 includes a plurality of pixels, and each pixel includes three pixel units 20 respectively representing three primary colors of red, green, and blue (RGB). Taking a liquid crystal display p...

Claims

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Application Information

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IPC IPC(8): G11C19/00G11C19/28
Inventor 刘俊欣蔡宗廷苏国彰陈勇志
Owner AU OPTRONICS CORP