Electronic circuit for driving electroluminescent display
US8026670B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2007 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | May 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electroluminescent circuit for driving an electroluminescent display having a plurality of segment electrodes and a common electrode. The circuit comprises a DC power supply, an output terminal for each of the segments and common electrodes and at least one supply half H-bridge for connecting at least one of each of the segment electrodes and the common electrode selectively to one of the DC supply and a reference voltage. Each supply half H-bridge comprises a top switch and a bottom switch in series having a junction between them. The top switch is connected to the DC supply and the bottom switch is connected to a reference voltage. A discharge circuit is provided for selectively discharging the electroluminescent display, the discharge circuit comprising a discharge half H-bridge in which a top switch is connected to the DC supply and to a discharge path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.