Liquid crystal devices
US3938879A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Nov 25, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to liquid crystal display devices. One aspect of the invention concerns the electrolytic growing of projections on one plate of the device so that the projections register with the tin-oxide segment array on the other plate; another aspect concerns utilizing similar projections as internally placed spacers. An insulative sheet is deposited over the segment array in order to filter D.C. components, according to a third aspect of the invention, and, according to a fourth aspect, a spacing technique is disclosed which utilizes alumina particles in a glass matrix as an edge spacer. Further, a light concentration technique, utilizing a one-way mirror and a prism or fiber optic assembly, is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.