Bidirectional scanning GOA circuit
US9484111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2015 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Jun 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A GOA circuit for use in LCD applications is disclosed, and the GOA circuit includes multiple cascaded GOA units, each of which includes a pull-up control circuit, a pull-up circuit, a pull down circuit, a pull-down holding circuit, a reset circuit, and a bootstrap capacitor. By using the GOA circuit, scanning directions of the LCD display panel are controlled by introducing scanning control signals to the pull-up control circuit for determining to output gate signals of the GOA circuit in sequence of up-to-down stages or in sequence of down-to-up stages. Furthermore, a novel scheme of three-segment voltage division achieves the optimization and the stability of the GOA circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.