US4911958A
Expired / Lapsed
US
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Liquid crystal device
Assignee: Panasonic Holdings Corp
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Filing: 1988-11-25
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Granted: 1990-03-27
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Expires: 2008-11-25
Abstract
Abstract A liquid crystal device is disclosed wherein a pair of liquid crystal supporting plates each having a molecular alignment controlling film formed thereon through the Langmuir-Blodgett method singly orlaminatedly a monomolecular film having as a main component a polyamide compound having a long-chain alkyl substituent in its side chain and a property to overspread a surface of water to form a monomolecular film is oppositely held via a spacer which is adhered on the side on which the molecular alignment controlling film is formed, and a liquid crystal material is injected and held into the space produced between the films thus oppositely held to each other thereby to align the molecules of liquid crystal to the azimuth parallel to the dipping direction of the substrate. A liquid crystal device thus manufactured exhibits a uniform and indefective molecular alignment condition.
Inventors
- 👤 Hideaki Mochizuki
- 👤 Tsuyoshi Uemura
- 👤 Tooru Tamura
- 👤 Hiroshi Satani
- 👤 Masakazu Uekita
- 👤 Makoto Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:16
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; B; B05; B05D; B05D1/00; B05D1/18; B05D1/20; B05D1/202; B82; B82Y; B82Y30/00; B82Y40/00; C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; G02F1/1333; G02F1/1337; G02F1/133711; C09; C09K; C09K2323/00; C09K2323/02; C09K2323/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
The liquid crystal device comprising: a pair of substrates each having an electrode layer formed thereon and disposed so as to have the electrode layers formed thereon confronted to each other; a liquid crystal layer sandwiched between said pair of substrates; and a liquid crystal molecular alignment controlling film formed between at least one of said electrode layers and said liquid crystal layer, said liquid crystal molecular alignment controlling film containing a polyamide compound having a long-chain alkyl substituent in its side chain as a main component and being made of either a monomolecular film or a laminated monomolecular film of a mixture of said polyamide compound and a liquid crystal.
Claim 2
Dependent Claim
111 words
The liquid crystal device comprising: a pair of substrates each having an electrode layer formed thereon and disposed so as to have the electrode layers formed thereon confronted to each other; a liquid crystal layer sandwiched between said pair of substrates; and a liquid crystal molecular alignment controlling film formed between at least one of said electrode layers and said liquid crystal layer, said liquid crystal molecular alignment controlling film containing a polyamide compound having a long-chain alkyl substituent in its side chain as a main component and being made of either a monomolecular film or a laminated monomolecular film of a mixture of said polyamide compound and a liquid crystal.
Claim 3
Dependent Claim
52 words
A liquid crystal device as claimed in claim 1, wherein said liquid crystal molecular alignment controlling film is made of either a monomolecular film or a laminated monomolecular film whose main component is a polyamide compound possessing a property to overspread on a surface of water thereby to form a monomolecular film.
Claim 4
Dependent Claim
35 words
The liquid crystal device as claimed in claim 1, wherein said polyamide compound having a long-chain alkyl substituent in its side chain is a compound which has a long-chain alkyl ester unit of polyamic acid.
Claim 5
Dependent Claim
111 words
A liquid crystal device comprising: a pair of substrates each having an electrode layer formed thereon and disposed so as to have the electrode layers formed thereon confronting each other; a liquid crystal layer sandwiched between said pair of substrates; and a liquid crystal molecular alignment controlling film formed between at least one of said electrode layers and said liquid crystal layer, said liquid crystal molecular alignment controlling film being made of either a monomolecular film or a laminated monomolecular film which contains a polyamide compound having a long-chain alkyl substituent in its side chain as the main component and said liquid crystal layer being made of a ferroelectric liquid crystal.
Claim 6
Dependent Claim
111 words
A liquid crystal device comprising: a pair of substrates each having an electrode layer formed thereon and disposed so as to have the electrode layers formed thereon confronting each other; a liquid crystal layer sandwiched between said pair of substrates; and a liquid crystal molecular alignment controlling film formed between at least one of said electrode layers and said liquid crystal layer, said liquid crystal molecular alignment controlling film being made of either a monomolecular film or a laminated monomolecular film which contains a polyamide compound having a long-chain alkyl substituent in its side chain as the main component and said liquid crystal layer being made of a ferroelectric liquid crystal.
Claim 7
Dependent Claim
52 words
The liquid crystal device as claimed in claim 4, wherein said liquid crystal molecular alignment controlling film is made of either a monomolecular film or a laminated monomolecular film whose main component is a polyamide compound possessing a property to overspread on a surface of water thereby to form a monomolecular film.
Claim 8
Dependent Claim
48 words
The liquid crystal device as claimed in claim 4, wherein said liquid crystal molecular alignment controlling film contains a polyamide compound as the main component and is made of either monomolecular film or a laminated monomolecular film of a mixture of said polyamide compound and a liquid crystal.
Claim 9
Dependent Claim
35 words
The liquid crystal device as claimed in claim 4, wherein said polyamide compound having a long-chain alkyl substituent in its side chain is a compound which has a long-chain alkyl ester unit of polyamic acid.
References Cited (Backward Citations)
US4615919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |