US5128788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-crystal orientating film, method of manufacturing the film, and liquid-crystal element having the film
Assignee: Toshiba Corp
•
Filing: 1990-09-26
•
Granted: 1992-07-07
•
Expires: 2010-09-26
Abstract
Abstract Disclosed herein is a liquid-crystal orientating film which is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions, and which is designed to orientate liquid-crystal molecules in the direction in which the portions of the film are contracted and non-contracted. The liquid-crystal orientating film has been manufactured by applying light to selected portions of a polymer film, thereby photo-curing these portions, thus forming stripe-shaped contracted portions, stretching the remaining portions of the film, which are located adjacent to the contracted portions, by virtue of the contraction of the portions applied with light.
Inventors
- 👤 Kohki Takatoh
- 👤 Masanori Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; C; C09; C09K; C09K2323/00; C09K2323/02; G02F1/133765; G02F1/13378; G02F1/133788
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
68 words
An LC display element comprising: a pair of opposing substrates, either substrate having electrodes and an LC orientating film formed on the surface opposing the other substrate; and a mass of liquid crystal filled in the gap between the substrates, wherein said LC orientating film is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions.
Claim 2
Dependent Claim
68 words
An LC display element comprising: a pair of opposing substrates, either substrate having electrodes and an LC orientating film formed on the surface opposing the other substrate; and a mass of liquid crystal filled in the gap between the substrates, wherein said LC orientating film is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions.
Claim 3
Dependent Claim
22 words
A liquid-crystal orientating film comprising a polymer film consisting of stripe-shaped contracted portions and non-contracted portions located adjacent to the contracted portions.
Claim 4
Dependent Claim
22 words
A liquid-crystal orientating film comprising a polymer film consisting of stripe-shaped contracted portions and non-contracted portions located adjacent to the contracted portions.
Claim 5
Dependent Claim
17 words
The liquid-crystal orientating film according to claim 2, wherein said polymer film is made of photo-curable resin.
Claim 6
Dependent Claim
23 words
The liquid-crystal orientating film according to claim 2, wherein said polymer film is made of a mixture of photo-curable resin and thermosetting resin.
Claim 7
Dependent Claim
23 words
The liquid-crystal orientating film according to claim 2, wherein said polymer film is made of a mixture of photo-curable resin and thermoplastic resin.
Claim 8
Dependent Claim
33 words
The liquid-crystal orientating film according to claim 2, wherein said polymer film comprises a first layer made of soft resin and a second layer formed on the first layer and containing photo-curable resin.
Claim 9
Dependent Claim
25 words
The liquid-crystal orientating film according to claim 2, wherein said contracted portions and said non-contracted portions have a width ranging from 0.1 to 100 μm.
Claim 10
Dependent Claim
25 words
The liquid-crystal orientating film according to claim 7, wherein said contracted portions and said non-contracted portions have a width ranging from 1 to 50 μm.
Claim 11
Dependent Claim
21 words
The liquid-crystal orientating film according to claim 2, wherein said polymer film has a thickness ranging from 10 to 1000 nm.
Claim 12
Dependent Claim
21 words
The liquid-crystal orientating film according to claim 9, wherein said polymer film has a thickness ranging from 10 to 100 nm.
Claim 13
Independent Claim
41 words
A method of manufacturing a liquid-crystal orientating film, comprising the step of applying light to selected portions of a polymer film, thereby forming stripe-shaped contracted portions, and forming non-contracted portions of the film which are located adjacent to the contracted portions.
Claim 14
Independent Claim
41 words
A method of manufacturing a liquid-crystal orientating film, comprising the step of applying light to selected portions of a polymer film, thereby forming stripe-shaped contracted portions, and forming non-contracted portions of the film which are located adjacent to the contracted portions.
Claim 15
Dependent Claim
17 words
The method according to claim 11, wherein said polymer is made of a resin including photo-curable resin.
Claim 16
Dependent Claim
31 words
The method according to claim 11, wherein said polymer film is heated after light has been applied to the film in order to form the contracted portions and the non-contracted portions.
Claim 17
Dependent Claim
30 words
The method according to claim 11, wherein said polymer film is heated before light is applied to the film in order to form the contracted portions and the non-contracted portions.
Claim 18
Dependent Claim
40 words
The method according to claim 11, wherein, after light has been applied to said polymer film in order to form the contracted portions and the non-contracted portions, less intense light is applied to the entire surface of said polymer film.
Claim 19
Dependent Claim
39 words
The method according to claim 11, wherein, before light is applied to said polymer film in order to form the contracted portions and the non-contracted portions, less intense light is applied to the entire surface of said polymer film.
References Cited (Backward Citations)
FR2206981A1
Cited
US4247174A
Cited
DE2931259A1
Cited
DE2931293A1
Cited
JPS58196524A
Cited
US4763995A
Cited
US4725517A
Cited
US4878742A
Cited
JPS6349788A
Cited
EP0301660A1
Cited
JPH01210932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |