Decoration display device and timepiece comprising such display device
US5740130A · kind A · utility
26Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Device producing an aesthetic effect by means of a field-effect or charge-effect optical shutter (5), allowing, by the switching of a power source (8), a colored decorative design (11) printed onto a non Lambertian optimized diffuse reflector (12), placed against the back face (5a) of the optical shutter, to be uncovered or masked; timepiece wherein the dial is formed wholly or partly by such a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.