Shift register circuit
AssigneeAu Optronics Corporation
InventorsKuan-Yu Chen, Wei-Cheng Lin
Life of this patent
Estimating the term…
Abstract
A shift register circuit includes plural stages of shift registers. Each stage of shift register includes a pull-up circuit, a first driving circuit and a voltage-stabilizing circuit. The pull-up circuit is used for charging a first node. The first driving circuit is electrically connected with the first node. According to a voltage level of the first node, a corresponding control signal is outputted from an output terminal of the first driving circuit. The voltage-stabilizing circuit is electrically connected with the output terminal of the first driving circuit for stabilizing the control signal from the first driving circuit. Some circuits of some other shift registers are controlled according to the control signal.
Claims14
A shift register circuit comprising plural stages of shift registers, each stage of shift register comprising:
- a pull-up circuit for charging a first node;
- a first driving circuit electrically connected with the first node, wherein according to the voltage level of the first node, an output signal is outputted from an output terminal of the first driving circuit, wherein the output signal is provided to a next-stage shift register as a start pulse signal, and provided to specific shift registers previous to the current-stage shift register as a control signal;
- and
- a voltage-stabilizing circuit electrically connected with the output terminal of the first driving circuit for stabilizing the output signal of the first driving circuit;
- wherein the voltage-stabilizing circuit comprises:
- a voltage-stabilizing control unit for generating a voltage-stabilizing control signal corresponding to the current-stage shift register;
- a first voltage-stabilizing unit electrically connected with the voltage-stabilizing control unit for receiving the voltage-stabilizing control signal, wherein according to the voltage-stabilizing control signal, the first voltage-stabilizing unit determines whether the output terminal of the first driving circuit is discharged;
- and
- a second voltage-stabilizing unit for receiving a previous-stage voltage-stabilizing control signal from a previous voltage-stabilizing control unit of a previous-stage shift register, wherein according to the previous-stage voltage-stabilizing control signal, the second voltage-stabilizing unit determines whether the output terminal of the first driving circuit is discharged.
Dependencies are inferred from the claim text.