US3935337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of liquid crystal containing polymeric structure
Assignee: Techneglas LLC
•
Filing: 1973-11-07
•
Granted: 1976-01-27
•
Expires: 1993-11-07
Abstract
Abstract There is disclosed the preparation of a liquid crystal containing structure by incorporating a liquid crystal substance into a polymeric matrix so as to form a thin, layer-like structure of controlled thickness. The resulting structure is highly suitable for use in display and/or memory devices or other devices utilizing liquid crystal properties.
Inventors
- 👤 Lynn J. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; C09K19/542; C09K19/544; C08; C08K; C08K5/00; C08K5/0008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A process for preparing a thin, layer-like film structure of controlled thickness suitable for use in electronic display devices comprising providing a polymeric material film, applying a liquid-crystal material to the surface of said polymeric material film and then heating said polymeric film to a temperature sufficient to promote diffusion of said liquid-crystal material therein to form said film structure containing said polymeric material in matrix form with said liquid-crystal material as a dispersed phase embedded in said polymeric material film such that said liquid-crystal material is in intimate contact with said matrix, said polymeric material being chemically and physically inert relative to the contained liquid-crystal material.
Claim 2
Dependent Claim
107 words
A process for preparing a thin, layer-like film structure of controlled thickness suitable for use in electronic display devices comprising providing a polymeric material film, applying a liquid-crystal material to the surface of said polymeric material film and then heating said polymeric film to a temperature sufficient to promote diffusion of said liquid-crystal material therein to form said film structure containing said polymeric material in matrix form with said liquid-crystal material as a dispersed phase embedded in said polymeric material film such that said liquid-crystal material is in intimate contact with said matrix, said polymeric material being chemically and physically inert relative to the contained liquid-crystal material.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein the liquid-crystal material is nematic, cholesteric, or a mixture of nematic and cholesteric.
Claim 4
Dependent Claim
20 words
The invention of claim 2 wherein the film structure has a thickness of about 0.25 mil to about 2.5 mils.
Claim 5
Dependent Claim
25 words
The invention of claim 3 comprising the further step of incorporating said film structure between adjacent layers, the adjacent layers comprising plastic, glass, or ceramic.
Claim 6
Dependent Claim
19 words
The invention of claim 4 wherein the polymeric matrix has a molecular weight of about 10,000 to about 200,000.
References Cited (Backward Citations)
US3114836A
Cited
US3529156A
Cited
US3804618A
Cited
US3578844A
Cited
US3600060A
Cited
US3620889A
Cited
US3585381A
Cited
US3663390A
Cited
US3697297A
Cited
US3766061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |