Back to results
US 11,380,277 B2Granted
GOA circuit and display panel
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorSuping Xi
Life of this patent
Estimating the term…
Abstract
A gate driver on array (GOA) circuit and a display panel are provided. The GOA circuit includes a plurality of cascaded GOA units. Switching transistor devices are added to an inverter of the GOA unit, and a low-potential signal is output to relevant nodes in the inverter in time to release residual charge of the relevant nodes.
Claims18
A gate driver on array (GOA) circuit, comprising:
- a plurality of cascaded GOA units, wherein a nth GOA unit comprises a pull-up control module, a pull-up module, a cascade module, a pull-down module, a pull-down maintenance module, and a bootstrap capacitor, and n is a positive integer;
- wherein the pull-down maintenance module is configured to maintain a potential of a current-stage control signal, and the pull-down maintenance module comprises a first inverter;
- wherein the first inverter comprises an eleventh switching transistor, a twelfth switching transistor, a thirteenth switching transistor, a fourteenth switching transistor, a fifteenth switching transistor, and a sixteenth switching transistor;
- wherein a source and a gate of the eleventh switching transistor and a source of the thirteenth switching transistor are all connected to a first potential signal;
- wherein a drain of the eleventh switching transistor, a drain of the twelfth switching transistor, a gate of the thirteenth switching transistor, and a drain of the sixteenth switching transistor are all connected to a first node;
- wherein a drain of the thirteenth switching transistor, a drain of the fourteenth switching transistor, and a drain of the fifteenth switching transistor are all connected to a second node;
- wherein a gate of the twelfth switching transistor and a gate of the fourteenth switching transistor are both connected to the current-stage control signal;
- wherein a source of the twelfth switching transistor, a source of the fourteenth switching transistor, a source of the fifteenth switching transistor, and a source of the sixteenth switching transistor are all connected to a low-potential signal;
- wherein a gate of the fifteenth switching transistor and a gate of the sixteenth switching transistor are both connected to a second potential signal;
- and
- wherein a phase of the first potential signal and a phase of the second potential signal are opposite.
8 more elements
A display panel, comprising:
- a gate driver on array (GOA) circuit comprising a plurality of cascaded GOA units, wherein a nth GOA unit comprises a pull-up control module, a pull-up module, a cascade module, a pull-down module, a pull-down maintenance module, and a bootstrap capacitor, and n is a positive integer;
- wherein the pull-down maintenance module is configured to maintain a potential of a current-stage control signal, and the pull-down maintenance module comprises a first inverter;
- wherein the first inverter comprises an eleventh switching transistor, a twelfth switching transistor, a thirteenth switching transistor, a fourteenth switching transistor, a fifteenth switching transistor, and a sixteenth switching transistor;
- wherein a source and a gate of the eleventh switching transistor and a source of the thirteenth switching transistor are all connected to a first potential signal;
- wherein a drain of the eleventh switching transistor, a drain of the twelfth switching transistor, a gate of the thirteenth switching transistor, and a drain of the sixteenth switching transistor are all connected to a first node;
- wherein a drain of the thirteenth switching transistor, a drain of the fourteenth switching transistor, and a drain of the fifteenth switching transistor are all connected to a second node;
- wherein a gate of the twelfth switching transistor and a gate of the fourteenth switching transistor are both connected to the current-stage control signal;
- wherein a source of the twelfth switching transistor, a source of the fourteenth switching transistor, a source of the fifteenth switching transistor, and a source of the sixteenth switching transistor are all connected to a low-potential signal;
- wherein a gate of the fifteenth switching transistor and a gate of the sixteenth switching transistor are both connected to a second potential signal;
- and
- wherein a phase of the first potential signal and a phase of the second potential signal are opposite.
8 more elements
Dependencies are inferred from the claim text.