Liquid crystal display device
US4173757A · kind A · utility
14Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1977 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Sep 21, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133631
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides a nematic liquid crystal display device for displaying a first information in the absence of any control voltage and substituting for that another information, or successively several other informations, by application of a control voltage. Several embodiments are described, in which either rotatory polarization effect in twisted structures or dynamic scattering effect are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.