OLED active matrix using a single transistor current mode pixel design
US6023259A · kind A · utility
332Cited by
25References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1998 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Mar 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/841
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a current driver for an active matrix organic light emitting device display. As embodied herein, the driver relies upon a single transistor, driven in a saturation regime to provide a current source for an OLED. This results in a pulse drive. The driver of the present invention is compatible with high speed integrated drivers and can be fabricated on the same substrate as the OLED. A technique for driving an OLED is disclosed that will produce a good quality gray scale image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.