Gate driver on array (GOA) circuit and LCD device using the same
US9454940B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Feb 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D86/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A gate driver on array (GOA) circuit for an LCD includes multiple cascaded GOA units. A Nth stage GOA unit controls a charging of a Nth stage horizontal scanning line. The Nth stage GOA unit includes a pull-up circuit, a pull-down circuit, a first pull-down holding circuit, a second pull-down holding circuit, a bridge circuit, a pull-up control circuit, a transfer circuit, and a boast capacitor. A seventh TFT connects in parallel with a third TFT of the first pull-down holding circuit. A fourteenth TFT connects in parallel with a tenth TFT of the second pull-down holding circuit. The gate of the seventh TFT and the gate of the fourteenth TFT are connected, and both connected to a starting signal from (N−1)th GOA unit or a (N−1)th stage horizontal scanning line. An LCD device also uses the GOA circuit to reduce the delay of the gate signal output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.