GOA circuit and liquid crystal display device applied to liquid crystal displays
US9460676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2014 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jan 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0286
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A GOA circuit applied to a liquid crystal display is disclosed, which comprises a plurality of cascaded shift register units, an (N)th level shift register unit is controlled to charge an (N)th level scanning line accordingly. The (N)th level shift register unit includes a pull-up circuit, a pull-down circuit, a pull-down sustain circuit, a pull-up control circuit, a down transfer circuit, and an bootstrap capacitor, and a display device is also disclosed herein. By replacing scanning lines with a constant voltage VDD or two voltages to accomplish the function of down transfer, the loading of scanning lines and the risk which comes with wiring step-by-step are decreased, forward-scanning operation and backward-scanning operation are accomplished accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.