Shift register and method for driving the same, gate driving circuit, and display apparatus
AssigneesBoe Technology Group Co., Ltd., Hefei Boe Optoelectronics Technology Co., Ltd.
InventorsXiaojie Zhang, Xianjie Shao, Junsheng Chen
Life of this patent
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Abstract
The embodiments of the present disclosure provide a shift register and a method for driving the same, a gate driving circuit, and a display apparatus. The shift register comprises input circuitry, storage circuitry, output circuitry, reset circuitry, pull-down circuitry, and pull-down control circuitry. The shift register and the method for driving the same, the gate driving circuit, and the display apparatus according to the embodiments of the present disclosure can reduce noise interference.
Claims12
A shift register, comprising input circuitry, storage circuitry, output circuitry, reset circuitry, pull-down control circuitry, and pull-down circuitry,
- wherein the input circuitry is coupled to an input signal terminal, a first voltage terminal, and the storage circuitry, and is configured to receive an input signal and to output the received input signal to the storage circuitry, and a pull-up point is between the input circuitry and the storage circuitry,
- the storage circuitry is coupled to the output circuitry and is configured to store the input signal,
- the output circuitry is coupled to the storage circuitry, a clock signal terminal, and an output signal terminal, and is configured to output a clock signal from the clock signal terminal to the output signal terminal,
- the reset circuitry is coupled to a reset signal terminal, a second voltage terminal, and the pull-up point and is configured to reset the pull-up point according to a reset signal,
- the pull-down control circuitry is coupled to a third voltage terminal and the pull-down circuitry and is configured to control the pull-down circuitry, and
- the pull-down circuitry is coupled to the output signal terminal, a fourth voltage terminal, and the pull-up point and is configured to pull down levels at the output signal terminal and the pull-up point under control of the pull-down control circuitry.
A method for driving a shift register unit, the method comprising:
- in a first phase, receiving, at input circuitry, a valid input signal from an input signal terminal, outputting, by the input circuitry, a signal from a first voltage terminal to a pull-up point, and storing, by storage circuitry, the signal from the first voltage terminal;
- in a second phase, outputting, by the output circuitry, a valid clock signal provided by a clock signal terminal to an output signal terminal under the control of a valid voltage output by the storage circuitry;
- in a third phase, receiving, at reset circuitry, a valid reset signal from a reset signal terminal;
- resetting, by the reset circuitry, a voltage at the pull-up point to a voltage from a second voltage terminal under the control of the reset signal;
- and outputting, by pull-down control circuitry, a valid signal from the third voltage terminal to a pull-down point, wherein a level at the output signal terminal is pulled down by pull-down circuitry under the control of the valid signal at the pull-down point;
- and
- in a fourth phase, keeping outputting, by the pull-down control circuitry, the valid signal from the third voltage terminal to the pull-down point, and keeping pulling down, by the pull-down circuitry, the level at the output signal terminal under the control of the valid signal at the pull-down point.
Dependencies are inferred from the claim text.