Pixel circuit and organic light emitting display
US7535447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Oct 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0242
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic light emitting display includes a pixel circuit having first, second, and third organic light emitting diodes (OLEDs), for emitting red, green, and blue light, respectively, a driving circuit commonly connected to the OLEDs, and a switching circuits connected to the OLED and the driving circuit to sequentially control the driving thereof. By controlling a plurality of OLEDs, the number of pixel circuits in an organic light emitting display is reduced, thereby reducing the number of scan lines, data lines, and emission control lines, which in turn improves the aperture ratio of the light emitting display. Further, the emission order of the OLEDs is controlled so that it is possible to prevent the generation of color breakup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.