Voltage regulator for integrated injection logic electronic system with liquid crystal display
US4199714A · kind A · utility
3Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1978 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | May 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/18
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic system, such as an electronic timepiece, utilizes multi-level, integrated injection logic circuitry and a liquid crystal display. A low-power voltage regulator is provided for driving the liquid crystal display which has a negative temperature coefficient. The voltage regulator provides a negative temperature coefficient which tracks the negative temperature coefficient of the liquid crystal display by utilizing the multi-levels of the integrated injection logic circuit to provide the electrical equivalent of a plurality of series-connected diodes without additional current drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.