Patent US4101207A successfully refreshed from Google Patents.
US4101207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of liquid crystal containing polymeric structure
Assignee: Techneglas LLC
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Filing: 1977-04-18
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Granted: 1978-07-18
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Expires: 1997-04-18
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
2026-10-26 22:52
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: 7
Claim 1
Independent Claim
102 words
As an article of manufacture, an electronic display device comprising: (a) at least one base member, (b) a thin, layer-like structure of controlled thickness supported on a surface of said base member, (c) said structure comprising poly(ethylene oxide) in matrix form and N,N'-bis(p-n-octyloxybenzylidene)-2-chloro-1,4-phenylenediamine nematic liquid-crystal material; (d) said nematic liquid-crystal material being dispersed in said poly(ethylene oxide) matrix in intimate contact therewith, and said poly(ethylene oxide) being chemically and physically inert relative to the contained liquid-crystal material, and (e) means for applying an electric field to selected areas of said structure to produce a dynamic scattering effect in said nematic liquid-crystal materail.
Claim 2
Dependent Claim
102 words
As an article of manufacture, an electronic display device comprising: (a) at least one base member, (b) a thin, layer-like structure of controlled thickness supported on a surface of said base member, (c) said structure comprising poly(ethylene oxide) in matrix form and N,N'-bis(p-n-octyloxybenzylidene)-2-chloro-1,4-phenylenediamine nematic liquid-crystal material; (d) said nematic liquid-crystal material being dispersed in said poly(ethylene oxide) matrix in intimate contact therewith, and said poly(ethylene oxide) being chemically and physically inert relative to the contained liquid-crystal material, and (e) means for applying an electric field to selected areas of said structure to produce a dynamic scattering effect in said nematic liquid-crystal materail.
Claim 3
Dependent Claim
19 words
The article of claim 1 wherein the poly(ethylene oxide) has a molecular weight of about 10,000 to about 200,000.
Claim 4
Dependent Claim
22 words
The article of claim 1 wherein the weight ratio of liquid-crystal material to poly(ethylene oxide) matrix ranges between about 1:4 and 4:1.
Claim 5
Dependent Claim
27 words
The article of claim 1 in the form of a thin film having an overall thickness in the range from about 0.25 mil to about 2.5 mils.
Claim 6
Dependent Claim
92 words
As an article of manufacture, an electronic display device comprising a thin layer of N,N'-bis(p-n-octyloxybenzylidene)-2-chloro-1,4-phenylenediamine nematic liquid-crystal material and poly(ethylene oxide) in matrix form, said nematic liquid-crystal material being dispersed in said poly(ethylene oxide) matrix in intimate contact therewith and said poly(ethylene oxide) being chemically and physically inert relative to the contained liquid-crystal material, said layer being supported on the surface of at least one base member, and means for applying an electric field to selected areas of the thin layer to produce a dynamic scattering effect in said nematic liquid-crystal material.
Claim 7
Dependent Claim
92 words
As an article of manufacture, an electronic display device comprising a thin layer of N,N'-bis(p-n-octyloxybenzylidene)-2-chloro-1,4-phenylenediamine nematic liquid-crystal material and poly(ethylene oxide) in matrix form, said nematic liquid-crystal material being dispersed in said poly(ethylene oxide) matrix in intimate contact therewith and said poly(ethylene oxide) being chemically and physically inert relative to the contained liquid-crystal material, said layer being supported on the surface of at least one base member, and means for applying an electric field to selected areas of the thin layer to produce a dynamic scattering effect in said nematic liquid-crystal material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |