Field sensitive optical displays with electrodes with high and low impedance portions
US4641923A · kind A · utility
8Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1984 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Jun 25, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1347
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are field sensitive optical displays, and arrangements and methods for inducing fields in the displays and for scanning the displays. In the disclosed embodiments, liquid crystal, optoceramic and electroluminscent materials are utilized. Methods and arrangements for improving the response time of twisted nematic liquid crystal material and for generating color displays are also disclosed. Methods and arrangements are also disclosed for superimposing varying and a dc fields in field sensitive material. Various display patterns such as a movable dot, intersecting lines and a pivoting line can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.