Electric display device
US5233459A · kind A · utility
399Cited by
23References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Mar 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2059/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bistable electrostatic light valve display in which a movable electrode is disposed opposite a fixed electrode and is biased to move in a preferred direction upon application of an electric field across the electrodes to produce a light valve or light shutter. In one embodiment, the movable electrode is restrained at one end and coils about the fixed end in a preferential roll direction. The bias is achieved by inducing anisotropic stress or anisotropic stiffness. In another embodiment, the moveable electrode is restrained at both ends and is biased upwardly by anisotropic stress or stiffening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.