OLED pixel circuit and light emitting display using the same
US7557784B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2005 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Jun 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel and a light emitting display including the pixel. The pixel includes first and second organic light emitting diodes (OLEDs), a driving circuit commonly connected to the plurality of OLEDs to drive the first and second OLEDs, a switching circuit connected between the first and second OLEDs and the driving circuit to sequentially control the driving of the first and second OLEDs using first and second emission control signals, and a reverse bias circuit for selectively applying a reverse bias voltage including at least one of the first and second emission control signals to the first and second OLEDs. Therefore, the reverse bias can be easily applied in the periods when the OLEDs do not emit light and thus can improve the characteristics of the OLEDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.