Self-compensating gate driving circuit
US9589520B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Apr 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a self-compensating gate driving circuit, comprising: a plurality of GOA units which are cascade connected, and a Nth GOA unit controls charge to a Nth horizontal scanning line G(n) in a display area, and the Nth GOA unit controls charge to a Nth horizontal scanning line G(n) in a display area, and the Nth GOA unit comprises a pull-up controlling part, a pull-up part, a transmission part, a first pull-down part, a bootstrap capacitor part and a pull-down holding part; the pull-up part, the first pull-down part, the bootstrap capacitor part and the pull-down holding circuit are respectively coupled to a Nth gate signal point Q(N) and the Nth horizontal scanning line G(n), and the pull-up controlling part and the transmission part are respectively coupled to the Nth gate signal point Q(N), and the pull-down holding part is inputted with a first DC low voltage VSS1. The present invention is designed to have the pull-down holding part with self-compensating function to promote the reliability of the long term operation for the gate driving circuit. The influence of the threshold voltage drift to the operation of the gate driving circuit is diminished; the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.