Watch with an analog display device the dial of which is formed by a liquid crystal display cell
US4488818A · kind A · utility
58Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/0094
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watch display comprises time display hands (3, 4) and a reflecting digital display (5) which acts as dial for the hands, the display being transparent under the effect of an electric field and opaque in the absence of the field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.