Shift register circuit
AssigneeAu Optronics Corporation
InventorsYu-Chung Yang, Yung-Chih Chen
Life of this patent
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Abstract
A shift register circuit includes plural shift register stages for providing plural gate signals. Each shift register stage includes a driving unit, an input unit, a driving adjustment unit and a pull-down unit. The driving unit is utilized for outputting a gate signal according to a system clock and a driving control voltage. The input unit is put in use for outputting the driving control voltage according to an input control signal and a first input signal. The driving adjustment unit is employed for adjusting the driving control voltage according to a second input signal and a third input signal. The pull-down unit is used for pulling down the gate signal and the driving control voltage according to a fourth input signal.
Claims17
A shift register circuit for providing plural gate signals to plural gate lines, the shift register circuit comprising a plurality of shift register stages, an Nth shift register stage of the shift register stages comprising:
- a driving unit, electrically connected to an Nth gate line of the gate lines, for outputting an Nth gate signal of the gate signals according to a first system clock and an Nth driving control voltage, wherein the Nth gate line is employed to transmit the Nth gate signal;
- an input unit, electrically connected to the driving unit, for outputting the Nth driving control voltage according to an input control signal and a first input signal;
- a driving adjustment unit, electrically connected to the driving unit and the input unit, for adjusting the Nth driving control voltage according to a second input signal and a third input signal, the driving adjustment unit comprising:
- a first transistor having a first end for receiving the second input signal, a second end for outputting an adjustment control voltage, and a gate end for receiving the third input signal;
- a first capacitor having a first end electrically connected to the second end of the first transistor, and a second end electrically connected to the input unit and the driving unit;
- and
- a second capacitor having a first end directly connected to the second end of the first transistor, and a second end for receiving a fifth input signal;
- and
- a first pull-down unit, directly connected to the input unit and the Nth gate line, for pulling down the Nth gate signal and the Nth driving control voltage according to a fourth input signal.
Dependencies are inferred from the claim text.