GOA circuit and liquid crystal display device
US9824658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A GOA circuit and an LCD device. The GOA circuit includes multiple cascaded GOA units, and each includes a transferring circuit, a latch circuit and an output circuit. In a forward scanning, the transferring circuit receives a (N−1)th stage-transfer signal of a (N−1)th stage, and sending to the latch circuit. In a backward scanning, the transferring circuit receives a (N+1)th stage-transfer signal of a (N+1)th stage, and sending to the latch circuit. In the canning period, the latch circuit receives a first clock signal and a second clock signal simultaneously, and outputs an Nth stage-transfer signal the same as the first clock signal and opposite to the second clock signal. The output circuit receives the Nth stage-transfer signal, and outputs an Nth scanning signal the same as the Nth stage-transfer signal. The present invention utilizes two clock signals to commonly drive the GOA circuit to improve the stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.