Liquid crystal writing slate with DC imaging system
US5117297A · kind A · utility
5Cited by
51References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Aug 9, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1333
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device includes a base supporting a laminate which has an LC-layer (liquid crystal layer) formed of polymeric material holding micro-volumes of liquid crystal material, and a conductive layer on one surface of the LC-layer, the other surface of the LC-layer being substantially conductor-free, and apparatus for transitory application of DC electrical potential through the LC-layer to the conductive layer to produce an image. The invention provides improved image quality independent of application technique and without degradation of the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.