Organic light-emitting diode drive circuit for a display application
US7019721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2003 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0214
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic light-emitting diode drive circuit for a display application includes a plurality of organic light-emitting diodes (OLEDs) having an anode and a cathode, the organic light-emitting diodes being connected to anode lines and cathode lines, and at least one drive circuit. The organic light-emitting diodes are arranged in a common anode configuration, whereas the drive circuit is configured as a common anode drive device, so that each concerned cathode line can be connected by a respective first switch to a current source and so that each concerned anode line can be connected by a respective second switch to a positive power supply. The respective first switches are configured such that, when a cathode line is in use, a connection is made between the cathode line in use and the respective current source and, when the cathode line is unused, the cathode line is connected to a positive power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.