Square wave chamfering circuit and display panel
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorXuanquan Gao
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Abstract
Embodiments of the present disclosure are directed to a square wave chamfering circuit and a display panel. A control circuit controls the output node to output a chamfering signal based on a current through a path between the control circuit and the second power supply end. By using the control circuit to control an output node to output a chamfering signal based on a current through the control circuit and the second power supply end, a slow decline slope of the voltage output by the output node solves the problem of the large voltage drop of the display panel driving voltage.
Claims20
A square wave chamfering circuit, comprising:
- a first power supply end;
- a second power supply end;
- a driving circuit, coupled to the first power supply end, a first node, a output node, a first control signal input end, and a second control signal input end, for conducting signal of the first power supply end to the output node in response to a signal of the first control signal input end, and for conducting the output node and the first node in response to a signal of the second control signal input end;
- and
- a control circuit, coupled to the first node and the second power supply end, for controlling the output node to output a chamfering signal based on a current through a path between the control circuit and the second power supply end.
A display panel, comprising:
- a gate driving circuit, comprising a plurality of shift registers cascaded, and a driving signal output end of each of the shift registers being coupled to one of gate lines;
- a square wave chamfering circuit, comprising:
- a first power supply end, coupled to the driving signal output end of the shift register;
- an output node, coupled to the gate line;
- a second power supply end;
- a driving circuit, coupled to the first power supply end, a first node, the output node, a first control signal input end, and a second control signal input end, for conducting signal of the first power supply end to the output node in response to a signal of the first control signal input end, and for conducting the output node and the first node in response to a signal of the second control signal input end;
- and
- a control circuit, coupled to the first node and the second power supply end, for controlling the output node to output a chamfering signal based on a current through a path between the control circuit and the second power supply end.
Dependencies are inferred from the claim text.