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

Abstract

A shift register, a display device, a gate drive circuit and a driving method. The shift register comprises a multistage shift register circuit (SR0-SRn), an Nth shift register circuit of the multistage shift register circuit comprises a precharge circuit (1), a pull-up circuit (2), a reset circuit (3) and a holding circuit, the holding circuit is provided with an eighth transistor (M8), a gate electrode of the eighth transistor (M8) is connected with a first control signal terminal (CK), and a source electrode is connected with a drain electrode. Not only is the shift registering achieved, but also a working cycle of the circuit is reduced, the voltage and the shifting problems are solved, the control of control signals to pull-down nodes is achieved through the transistor with the source electrode and the drain electrode short-circuited, the pull-down nodes are lifted rapidly when the first control signals are at a high level, the descend range of the pull-down nodes is reduced when the first control signals are at a low level, and the control of the control signals to the circuit can be achieved well.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a shift register, a display device, a gate drive circuit and a drive method. Background technique [0002] In TFT-LCD, the basic principle of realizing a frame display is to output the signal required by each row of pixels from top to bottom through data drive, and gate drive to each pixel row from top to bottom in turn. Input a square wave with a certain width for gating. The current manufacturing method is to bond the gate driver IC and data driver IC on the glass panel through the COG (chip on glass) process. When the resolution of the small-size thin film transistor liquid crystal display is high, the gate and data drive outputs are more, and the length of the driver IC will increase, which will not be conducive to the bonding process of the module driver IC. Today, through the design of the gate drive circuit, the gate drive IC is fabricated on the glass panel through...

AI Technical Summary

Problems solved by technology

When the resolution of small-size thin film transistor liquid crystal display is high, there are more gate and data drive outputs, and the length of the drive IC will increase, which will not be conducive to the bonding process of the module drive IC

Today, through the design of the gate drive circuit, the gate drive IC is fabricated on the glass panel through the array substrate process without increasing any process and cost in the existing manufacturing process. The basic gate drive circuit shift register unit circuit Schematic as figure 1 As shown, but the working cycle of the circuit is long, the voltage threshold has a drift problem, and the control signal cannot control the circuit well

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