Shift register and liquid crystal display device

A shift register, shift register unit technology, applied in static memory, digital memory information, instruments, etc., can solve the problems of inconsistent low potential of output signal and inaccurate display of output signal.

Active Publication Date: 2013-04-03
CENTURY DISPLAY (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of inconsistency in the low potential of the output signal of the shift register in the prior art, it is necessary to provide a shift register in which the low potential of the output signal is consistent
[0005] In order to solve the problem of inaccurate display images caused by the inconsistency of the low potential of the shift register output signal of the prior art liquid crystal display device, it is also necessary to provide a clear and accurate liquid crystal display device

Method used

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  • Shift register and liquid crystal display device
  • Shift register and liquid crystal display device
  • Shift register and liquid crystal display device

Examples

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Embodiment Construction

[0054] see figure 1 , is a circuit structure block diagram of a preferred embodiment of the shift register of the present invention. The shift register 20 includes a plurality of shift register units having the same circuit structure, the plurality of shift register units are connected in series in sequence, and each shift register unit receives a clock signal CLK1 and an inverted clock signal CLK2 provided by an external circuit, And the clock signals received by two adjacent shift register units are inverted. The internal circuit structure of each shift register unit is the same, and they are all composed of a plurality of NMOS transistors. Each NMOS transistor includes a gate, a source and a drain. In this embodiment, only the first shift register unit 21, the second shift register unit 22 adjacent to it, and the third shift register unit 23 adjacent to the second shift register unit 22 are used as examples to illustrate the shift Connection relationship of register 20. ...

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PUM

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Abstract

The invention relates to a shift register and a liquid crystal display device with the same. The liquid crystal display device comprises a liquid crystal panel and at least one scan drive circuit. Each scan drive circuit comprises a shift register. Each shift register comprises a plurality of shift register units. Each shift register unit receives two clock signals from an external circuit. Two adjacent shift register units receive opposing clock signals, and the front shift register unit outputs a signal serving a signal to be input into the rear shift register unit. Each shift register unit comprises a start circuit, a signal input circuit, a signal output circuit, and a control circuit. The signals output by the shift registers are uniform in low level. The liquid crystal display device with the shift register is more vivid and accurate in picture display.

Description

technical field [0001] The invention relates to a shift register and a liquid crystal display device using the shift register. Background technique [0002] At present, a thin film transistor (Thin Film Transistor, TFT) liquid crystal display device has gradually become a standard output device of various digital products. However, it needs to design an appropriate driving circuit to ensure its stable operation. [0003] Generally, the driving circuit of the liquid crystal display device includes at least one scanning driving circuit. The scanning driving circuit is used to control the on and off of the thin film transistor, and the scanning driving circuit uses a shift register as a core circuit unit. Usually, the shift register is composed of a plurality of shift register units connected in series, and the output signal of the previous shift register unit is the input signal of the latter shift register unit. The plurality of shift register units output a high potential ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/36G11C19/28
Inventor 黄嘉桦
Owner CENTURY DISPLAY (SHENZHEN) CO LTD
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