US3853391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of liquid crystal devices
Assignee: RCA Corp
•
Filing: 1973-12-21
•
Granted: 1974-12-10
•
Expires: 1993-12-21
Abstract
Abstract A layer of magnesium fluoride is slant evaporated onto a substrate to provide an oriented microstructure thereon capable of causing sympathetic alignment of liquid crystal molecules. A process is used in which particles from a heated mass of magnesium fluoride travel along straight line paths directly from the heated mass to the substrate.
Inventors
- 👤 H Sorkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:21
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133734; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
45 words
A liquid crystal device comprising: an enclosure and a liquid crystal material therewithin, a surface of said enclosure having an electrode thereon, and a layer of magnesium fluoride on said electrode providing an oriented microstructure along with molecules of said liquid crystal material sympathetically align.
Claim 2
Dependent Claim
45 words
A liquid crystal device comprising: an enclosure and a liquid crystal material therewithin, a surface of said enclosure having an electrode thereon, and a layer of magnesium fluoride on said electrode providing an oriented microstructure along with molecules of said liquid crystal material sympathetically align.
Claim 3
Dependent Claim
13 words
The device of claim 1 in which said layer is a fast fluoride.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |