US4146656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing liquid crystal display device involving controlling the vapor deposition speed of the orientation layers
Assignee: Hitachi Ltd
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Filing: 1976-09-13
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Granted: 1979-03-27
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Expires: 1996-09-13
Abstract
Abstract A liquid crystal display device of the type comprising outer and lower substrates, electrodes formed on the inner surfaces of the substrates, liquid crystal orientation layers covering the protective films, and a liquid crystal interposed between the liquid crystal orientation films, is manufactured by forming the liquid crystal orientation layers by depositing SiO onto the protective films at a definite deposition angle with respect to the protective films and at a vapor deposition speed which varies in accordance with the type of the liquid crystal used.
Inventors
- 👤 Kiyoshige Kinugawa
- 👤 Kazuhisa Toriyama
- 👤 Hironari Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:21
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/22; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133734; C09K2323/00; C09K2323/03; C09K2323/033
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A method of manufacturing a liquid crystal display device of the type comprising upper and lower substrates, transparent electrodes formed on the inner surfaces of said substrates, protective films covering said electrodes, liquid crystal orientation layers covering said protective films, and a liquid crystal, ##STR5## where R is selected from the group consisting of C n H 2n+a -- and C n H 2n+1 O--, interposed between said liquid crystal orientation layers, said method comprising the step of forming said liquid crystal orientation layers by depositing an inorganic substance comprising SiO onto said protective films at a deposition angle of 5° to 10° with respect to said protective films and at a vapor deposition speed of 4A/sec to 10A/sec to provide an inclination angle of the molecule of the liquid crystal with respect to the protective film.
Claim 2
Independent Claim
137 words
A method of manufacturing a liquid crystal display device of the type comprising upper and lower substrates, transparent electrodes formed on the inner surfaces of said substrates, protective films covering said electrodes, liquid crystal orientation layers covering said protective films, and a liquid crystal, ##STR5## where R is selected from the group consisting of C n H 2n+a -- and C n H 2n+1 O--, interposed between said liquid crystal orientation layers, said method comprising the step of forming said liquid crystal orientation layers by depositing an inorganic substance comprising SiO onto said protective films at a deposition angle of 5° to 10° with respect to said protective films and at a vapor deposition speed of 4A/sec to 10A/sec to provide an inclination angle of the molecule of the liquid crystal with respect to the protective film.
Claim 3
Dependent Claim
37 words
The method according to claim 1 wherein said deposition angle and said deposition speed form a series of islands of said inorganic substance on the surface of each protective film, said islands extending in the same direction.
Claim 4
Dependent Claim
32 words
The method according to claim 1 wherein said liquid crystal display device is of the field effect type and said series of islands on said protective films extend to substantially right angles.
Claim 5
Dependent Claim
16 words
The method according to claim 1 wherein said liquid crystal comprises a 1:2 mixture of ##STR6##
Claim 6
Dependent Claim
20 words
The method according to claim 1 wherein said liquid crystal comprises a Schiff system liquid crystal having a structure ##STR7##
Claim 7
Dependent Claim
23 words
The method according to claim 1 wherein said liquid crystal comprises a mixture of a Schiff system liquid crystals having a structure ##STR8##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |