Patent · US Expired

Monocrystalline display device with storage effect for an electronic timepiece

US4085576A · kind A · utility

3Cited by

8References

10Claims

0Family size

Assignee

Societe Suisse pour l'Industrie Horlogere Management Services · CH

Inventor

Jacques Deverin · Widnau, CH

Key dates

Filing date	Sep 11, 1974
Grant date	Apr 25, 1978
Priority date	—
Expiry date	Sep 11, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG04G9/0035
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Disclosed is an electronic timepiece display arrangement in which certain rroelectric monocrystals having two stable optical states may be switched from one state to another by voltage pulses applied through electrodes. A polarizing filter is located past one face of the crystal and a reflecting surface is located past the opposite face. A second crystal and a second polarizer are employed in certain embodiments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.