Shift register module, driving method, gate driving circuit and display device

A shift register, circuit technology, applied in the direction of instruments, static indicators, etc., can solve problems such as influence, and achieve the effects of low noise, stable operation and strong driving ability

Active Publication Date: 2020-08-21
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the touch working state or pixel rapid discharge state and other special states, the output of the gate scanning circuit is still electrically connected to the gate line and other lines, resulting in the above-mentioned specific state due to parasitic effects
[0004] How to ensure the stability of the display caused by parasitic effects when switching between display and touch has become a technical problem that needs to be solved urgently

Method used

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  • Shift register module, driving method, gate driving circuit and display device
  • Shift register module, driving method, gate driving circuit and display device
  • Shift register module, driving method, gate driving circuit and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]This embodiment provides a new structure of the shift register module. By adding a type field effect transistor at the output end and controlling the switch of the field effect transistor through the enable signal, it can not only output normal high and low levels, but also output high-impedance state , so that the output signal produces three states, which can effectively prevent the gate drive circuit from affecting the display circuit part due to parasitic effects in a specific state.

[0052] Such as figure 1 Shown is the structural block diagram of the shift register module in this embodiment. The shift register module includes an input subcircuit 1, a shift register subcircuit 2, an output subcircuit 3 and an output buffer subcircuit 4 arranged in cascade in sequence, wherein:

[0053] The input sub-circuit 1 is connected with the first input signal terminal, the second input signal terminal, the first control signal terminal and the second control signal terminal...

Embodiment 2

[0073] This embodiment provides a gate driving circuit, including the shift register module in Embodiment 1.

[0074] In this gate drive circuit, multiple shift register modules are connected in cascade, such as Figure 4 As shown, the input signals of each stage of shift register module include the first input signal STV_N-1 and the second input signal STV_N+1, and STV_N-1 is from the shift register sub-circuit 2 in the shift register module of the upper stage The output signal STV_N, STV_N+1 is the output signal STV_N from the shift register sub-circuit 2 in the shift register module of the next stage, which are respectively used as the two input signals of the shift register module of the present stage, and the shift register module of the present stage The output signal of the bit register sub-circuit 2 is located between the first input signal and the second input signal in time sequence.

[0075] Since the gate drive circuit adopts the above-mentioned shift register mod...

Embodiment 3

[0077] This embodiment provides a display device, which includes the gate driving circuit in Embodiment 2.

[0078] The display device can be: desktop computer, tablet computer, notebook computer, mobile phone, PDA, GPS, vehicle display, projection display, video camera, digital camera, electronic watch, calculator, electronic instrument, instrument, liquid crystal panel, electronic paper, TV Computers, monitors, digital photo frames, navigators and other products or components with display functions can be applied to multiple fields such as public display and virtual display.

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PUM

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Abstract

The invention belongs to the technical field of display, and relates to a shift register module, a drive method, a gate drive circuit and a display device. The shift register module comprises an inputsub-circuit, a shift register sub-circuit, an output sub-circuit and an output cache sub-circuit, wherein the input sub-circuit is used for screening first input signals preceding to-be-output shiftsignals of the shift register sub-circuit by one period and second input signals lagging behind the to-be-output shift signals of the shift register sub-circuit by one period according to a first control signal and a second control signal reverse to the first control signal respectively and transmitting the screened signals to the shift register sub-circuit; the shift register sub-circuit is usedfor shifting the screened signals according to a first clock signal; the output sub-circuit is used for modulating the shifted screened signals into drive signals according to a second clock signal; the output cache sub-circuit is used for enhancing the drive capability of the output drive signals or stopping the output of the drive signals according to an enable signal. The shift register moduleavoids display stability influences caused by the parasitic effect during display and touch switching.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a shift register module, a driving method for the shift register module, a gate drive circuit and a display device. Background technique [0002] In the field of liquid crystal displays, the Gate Driver on Array (GOA) is a circuit that integrates the gate drive circuit into the liquid crystal panel. It has been widely used at present. The GOA circuit inherits the gate drive circuit from the array It replaces the traditional Gate IC on the substrate, so it can reduce the amount of IC used, and has the advantages of reducing production costs and production processes. [0003] With the fierce competition in the LCD panel industry, reducing panel cost and improving performance have become the competition points of panel manufacturers. The adoption of GOA circuit provides a stable drive for each pixel in the display area, which greatly improves the performance of the disp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3674G09G2310/0286
Inventor 黄飞
Owner BOE TECH GRP CO LTD
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