Bistable liquid crystal twist cell
US4239345A · kind A · utility
38Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Apr 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1391
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A bistable liquid crystal twist cell is disclosed. The cell is characterized by at least two stable states which exist indefinitely as long as not external energy is applied to the cell. External energy is necessary only for switching the cell between the stable states. Cell configurations which permit the fabrication of patterned displays are additionally disclosed. Specific embodiments include new techniques for switching the cell between the stable states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.