Driving circuit including shift register and flat panel display device using the same
US7528820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Apr 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A driving circuit for a flat panel display device includes shift register stages, each containing: a first TFT charging a Q node according to a start signal; a second TFT discharging the Q node according to an output voltage of a next shift register stage; a pull-up unit increasing an output voltage according to the Q node voltage; an odd pull-down unit decreasing the output voltage in an odd frame according to a QB-o node voltage; and an even pull-down unit decreasing the output voltage in an even frame according to a QB-e node voltage. A gate and drain of a third odd TFT connected to the QB-o node are connected to each other and receive an odd source voltage. A gate and drain of the third even TFT connected to the QB-e node are connected to each other and receive an even source voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.