Organic light emitting display
US7411571B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2005 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Jun 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic light emitting display that is capable of preventing degradation of picture quality, and a method of manufacturing the organic light emitting display are provided. A unit pixel for the organic light emitting display, includes a first transistor coupled to a data line and having a first voltage threshold, a second transistor coupled to the first and third transistors and controlled by a second select signal, a third transistor coupled to the first transistor and controlled by a first select signal, and a fourth transistor coupled to the third transistor and having a fourth voltage threshold such that a drive current of the fourth transistor is controlled independent of the fourth voltage threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.