EL driver for small semiconductor die
US6462485B1 · kind B1 · utility
16Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver for an EL lamp includes a voltage boost circuit and an H-bridge output having an AC diagonal and a DC diagonal. An EL lamp is coupled across the AC diagonal. A current path is coupled in series with the DC diagonal and limits current through the EL lamp. The current path is either internal or external to the semiconductor device implementing the driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.