Gate driving circuit
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorLongqiang SHI
Life of this patent
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Abstract
Disclosed is a gate driving circuit, which includes multi-stages of gate driving units. Each stage of gate driving unit includes an input control module, an output control module, a pull-down module, a pull-down maintenance module, and an electric current compensation module. The electric current compensation module effectively compensates an electric potential of an output end of a present stage of gate driving unit, so that a stability of the gate driving circuit can be greatly improved, and a display effect of a liquid crystal display panel can be improved.
Claims20
A gate driving circuit, comprising multi-stages of gate driving units in series connection with one another,
- wherein each stage of gate driving unit is configured to output a scanning signal through an output end thereof according to a scanning signal output by a previous stage of gate driving unit, a scanning signal output by a next stage of gate driving unit, and a clock signal;
- and
- wherein each stage of gate driving unit comprises:
- an input control module, configured to be controlled by the scanning signal output by the previous stage of gate driving unit so as to control an electric potential of a first node;
- an output control module, connected to the first node, and configured to control an electric potential of an output end of a present stage of gate driving unit according to the electric potential of the first node;
- a pull-down module, connected to the output control module, and configured to pull down the electric potential of the output end of the present stage of gate driving unit according to an electric potential of a second node;
- a pull-down maintenance module, connected to the pull-down module, and configured to maintain the electric potential of the second node during a non-scanning period so that the electric potential of the output end of the present stage of gate driving unit is maintained in a negative electric potential;
- and
- an electric current compensation module, connected to the output control module, and configured to increase an electric current flowing through the output end of the present stage of gate driving unit.
Dependencies are inferred from the claim text.