Organic EL drive circuit and organic EL display device using the same organic EL drive circuit
US7515124B2 · kind B2 · utility
180Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Apr 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An amplifier circuit for generating a predetermined constant voltage required for resetting organic EL elements or capacitors is provided and an operating current switching circuit switches the operating current of the amplifier circuit to an idling current in a display period and to a steady operation current required to performing a reset operation in a reset period, so that a shifting time of the amplifier circuit from the idling state to the steady operation state can be shortened and a constant control voltage for resetting the organic EL elements or the capacitors can be generated in an initial portion of the reset period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.