Split chip inverter for EL lamp
US5483503A · kind A · utility
12Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1995 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Jun 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic watch, either digital or analog, includes an EL lamp powered by a split chip inverter having a low voltage portion incorporated into a first semiconductor chip and a high voltage portion incorporated in a second semiconductor chip. The first semiconductor chip preferably includes all the other low voltage circuitry of the watch, e.g. timer/divider circuitry and logic for driving a display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.