Pixel and organic light emitting display device using the same
US8941567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2010 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic light emitting display device is capable of securing sufficient compensation period such that a threshold voltage of a driving transistor may be compensated. A pixel includes: an organic light emitting diode; a second transistor for controlling an amount of current supplied from a first power source to the organic light emitting diode; a first capacitor having a first terminal coupled to a gate electrode of the second transistor; a first transistor coupled between a second terminal of the first capacitor and a data line, and being configured to turn on when a scan signal is supplied to a scan line; and a third transistor coupled between a gate electrode and a second electrode of the second transistor and having a turning-on period that is not overlapped with that of the first transistor. The third transistor is configured to turn on for a longer time than the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.