AMOLED driving and compensating circuit and method, and AMOLED display device
US8970644B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 26, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Feb 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0876
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses an AMOLED driving and compensating circuit and method, and AMOLED display device. The driving and compensating circuit including: several driving circuits set inside several pixel regions used for driving several AMOLEDs; an external compensating circuit set outside the pixel regions used for eliminating an effect of threshold voltage of a driving thin film transistors in the several driving circuits set inside the several pixel regions on driving currents passing through the driving thin film transistors. The driving and compensating method including: storing threshold voltage of the driving thin film transistors of the several driving circuits set inside the several pixel regions; storing grayscale voltage of each of the several driving circuits set inside the several pixel regions; gate voltage of the driving thin film transistor of each of the several driving circuits set inside the several pixel regions jumping to a sum of the threshold voltage and the grayscale voltage of the driving circuit. The display device includes the AMOLED driving and compensating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.