Shift register, its driving method and gate driving circuit

A shift register and gate signal technology, applied in static memory, digital memory information, instruments, etc., can solve the problem of transistor noise removal failure and other problems, to avoid the rise of threshold voltage, improve work stability and reliability , Solve the effect of noise removal failure

Active Publication Date: 2020-02-14
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a shift register and its driving method to solve the problem of the failure of the noise removal function of the transistor in the existing structure

Method used

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  • Shift register, its driving method and gate driving circuit
  • Shift register, its driving method and gate driving circuit
  • Shift register, its driving method and gate driving circuit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0065] figure 1 It is a schematic structural diagram of a shift register according to an embodiment of the present invention. Such as figure 1 As shown, the shift register includes: a signal input terminal INPUT, a reset terminal RESET, a first clock input terminal CLK, a second clock input terminal CLKB, a control terminal IN and a signal output terminal OUTPUT, and also includes a pull-up node control unit 11, a pull-down node Node control unit 12, gate signal output unit 13 and threshold voltage control unit 14, wherein:

[0066] The pull-up node control unit 11 is respectively connected to the signal input terminal INPUT, the reset terminal RESET, the pull-up node PU and the pull-down node PD; it is used to control the potential of the pull-up node PU when the input signal of the signal input terminal INPUT is at a high level It is high level; it is also used to control the potential of the pull-up node PU to be low when the input signal of the reset terminal RESET is hi...

no. 2 example

[0109] Based on the inventive concept of the foregoing embodiments, the embodiment of the present invention also provides a driving method of a shift register, Figure 8 It is a flowchart of a driving method of a shift register according to an embodiment of the present invention. Such as Figure 8 As shown, the shift register includes: signal input terminal INPUT, reset terminal RESET, first clock input terminal CLK, second clock input terminal CLKB, control terminal IN, signal output terminal OUTPUT, pull-up node control unit, pull-down node control unit , a gate signal output unit and a threshold voltage control unit, the driving method of the shift register includes:

[0110] Under the control of the signal input terminal, the reset terminal and the second clock input terminal, the node control unit controls the potentials of the pull-up node and the pull-down node;

[0111] Under the control of the first clock input terminal, the pull-up node and the pull-down node, the ...

no. 3 example

[0128] Based on the inventive concepts of the foregoing embodiments, this embodiment further provides a gate driving circuit, which uses the shift register described in the foregoing embodiments.

[0129] Based on the inventive concepts of the foregoing embodiments, this embodiment further provides a display panel, which includes the gate driving circuit described in the foregoing embodiments. The display panel can be any product or component with a display function such as a mobile phone, a tablet computer, a TV set, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

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PUM

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Abstract

The invention provides a shift register, its driving method and gate driving circuit. Wherein, the shift register includes a node control unit, a gate signal output unit, and a threshold voltage control unit, the node control unit is used to control the potential of the pull-up node and the pull-down node, and the gate signal output unit is used to control the potential of the first clock input terminal, Under the control of the pull-up node and the pull-down node, the control signal output terminal outputs a gate drive signal, and the threshold voltage control unit is used to eliminate the threshold voltage drift of the noise elimination transistor in the gate signal output unit under the control of the control terminal and the pull-down node . The invention avoids the rise of the threshold voltage of the transistor, eliminates the situation that the transistor becomes difficult to turn on due to the rise of the threshold voltage, solves the problem of the failure of the noise removal function of the transistor to the greatest extent, and improves the working stability and reliability of the shift register performance, increasing the service life.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register, a driving method thereof, and a gate driving circuit. Background technique [0002] In recent years, flat panel displays, such as Thin Film Transistor-Liquid Crystal Display (TFT-LCD) and Active Matrix Organic Light Emitting Diode (AMOLED), have been It is widely used in electronic products such as TVs and mobile phones because of its advantages of thinness and low power consumption. [0003] A TFT-LCD or AMOLED display panel is composed of a matrix of pixels in both horizontal and vertical directions, and each pixel in the display panel is driven to display by a driving circuit. The drive circuit mainly includes a gate drive circuit and a data drive circuit, wherein the data drive circuit is used to sequentially latch the input data according to the clock signal and convert the latched data into an analog signal and input it to the data line of the display pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/3266G11C19/28
CPCG09G3/3266G09G3/3677G09G2310/0286G11C19/28G09G3/2092G09G2310/0267G09G2300/0426G09G2310/027G09G2310/061G09G2310/08
Inventor 陈鹏
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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