US5474629A
Expired / Lapsed
US
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Method for manufacturing a liquid crystal device
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1991-12-06
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Granted: 1995-12-12
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Expires: 2011-12-06
Abstract
Abstract A method for manufacturing a liquid crystal device, particularly a dispersion-type liquid crystal electrooptical device, which comprises a pair of substrates having incorporated therebetween a light-control layer comprising a transparent solid and a liquid crystal material and spacers, said substrates having provided thereon electrode layers and at least one of the substrates being transparent, is disclosed. The method comprises: coating the electrode layer side of one of the substrates with a material which gives the light-control layer; and, laminating and fixing the pair of substrates to give a predetermined layered structure. The spacers are uniformly disposed between the substrates by dispersing spacers on one of the electrode layers or on the light-control layer or applying a mixture comprising spacers, a liquid crystal material and a material for providing a transparent solid on one of the electrode layers. The process is economical and enables large-sealed liquid crystal electrooptical devices which can provide uniform displays, at an extremely few steps comprising coating once the substrate with a material for the light-control layer.
Inventors
- 👤 Shunpei Yamazaki
- 👤 Akira Mase
- 👤 Toshiji Hamatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:01
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; B; B32; B32B; B32B37/00; B32B37/12; B32B37/1207; B32B2310/00; B32B2310/08; B32B2310/0806; G02F1/1339; G02F1/13392; G02F1/1341; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T156/1092; Y10T156/1093
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
68 words
A method for manufacturing a liquid crystal device comprising the steps of: forming a mixture including spacers, a material comprising a liquid crystal material and a material for providing a transparent solid; applying the mixture on a substrate; joining said substrate with another substrate with said mixture therebetween after said applying step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 2
Independent Claim
68 words
A method for manufacturing a liquid crystal device comprising the steps of: forming a mixture including spacers, a material comprising a liquid crystal material and a material for providing a transparent solid; applying the mixture on a substrate; joining said substrate with another substrate with said mixture therebetween after said applying step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 3
Independent Claim
32 words
The method of claim i further comprising the step of fixing the substrates to each other by treatment selected from the group consisting of light irradiation treatment, heating treatment and combination thereof.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein said material for providing a transparent solid comprises monomers to become a transparent solid polymer.
Claim 5
Dependent Claim
74 words
The method of claim 3 further comprising the steps of: irradiating light on a portion of one of the substrates which overlaps the other one of the substrates after said joining step with portions of the substrates other than said portion masked to change said monomers into said transparent solid polymer; and removing a portion of said mixture in which said monomers are not changed into said transparent solid polymer by said irradiating step.
Claim 6
Independent Claim
41 words
The method of claim i wherein said material for providing a transparent solid comprises a transparent solid polymer selected from the group consisting of polyethylene, polymethacrylate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, polyester, polyamide resin, polyethylene terephthalate, fluoroplastics, and silicone resin.
Claim 7
Dependent Claim
17 words
The method of claim 1 wherein said spacers comprise balls and organic matter coated on said balls.
Claim 8
Dependent Claim
24 words
The method of claim 1 wherein said substrates are pressed towards one another under a pressure of from 1 to 5 kg/cm 2 .
Claim 9
Independent Claim
94 words
A method for manufacturing a liquid crystal device comprising the steps of: dispersing spacers on a substrate; fixing the dispersed spacers on said substrate; forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to said substrate after said fixing step to form a liquid crystal layer on said substrate; joining said substrate with another substrate with said liquid crystal layer and said spacers therebetween after said forming step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 10
Independent Claim
94 words
A method for manufacturing a liquid crystal device comprising the steps of: dispersing spacers on a substrate; fixing the dispersed spacers on said substrate; forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to said substrate after said fixing step to form a liquid crystal layer on said substrate; joining said substrate with another substrate with said liquid crystal layer and said spacers therebetween after said forming step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 11
Dependent Claim
32 words
The method of claim 8 further comprising the step of fixing the substrates to each other by treatment selected from the group consisting of light irradiation treatment, heating treatment and combination thereof.
Claim 12
Dependent Claim
21 words
The method of claim 8 wherein said material for providing a transparent solid comprises monomers to become a transparent solid polymer.
Claim 13
Dependent Claim
76 words
The method of claim 10 further comprising the steps of: irradiating light on a portion of one of the substrates which overlaps the other one of the substrates after said joining step with portions of the substrates other than said portion masked to change said monomers into said transparent solid polymer; and removing a portion of said liquid crystal layer in which said monomers are not changed into said transparent solid polymer by said irradiating step.
Claim 14
Dependent Claim
41 words
The method of claim 7 wherein said material for providing a transparent solid comprises a transparent solid polymer selected from the group consisting of polyethylene, polymethacrylate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, polyester, polyamide resin, polyethylene terephthalate, fluoroplastics, and silicone resin.
Claim 15
Dependent Claim
17 words
The method of claim 8 wherein said spacers comprise balls and organic matters coated on said balls.
Claim 16
Dependent Claim
24 words
The method of claim 8 wherein said substrates are pressed towards one another under a pressure of from 1 to 5 kg/cm 2 .
Claim 17
Independent Claim
88 words
A method for manufacturing a liquid crystal device comprising the steps of: dispersing spacers on a substrate; forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to another substrate to form a liquid crystal layer on said another substrate; joining the substrates with each other with said liquid crystal layer and said spacers therebetween after said forming step and said dispersing step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 18
Independent Claim
88 words
A method for manufacturing a liquid crystal device comprising the steps of: dispersing spacers on a substrate; forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to another substrate to form a liquid crystal layer on said another substrate; joining the substrates with each other with said liquid crystal layer and said spacers therebetween after said forming step and said dispersing step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 19
Dependent Claim
32 words
The method of claim 15 further comprising the step of fixing the substrates to each other by treatment selected from the group consisting of light irradiation treatment, heating treatment and combination thereof.
Claim 20
Dependent Claim
21 words
The method of claim 15 wherein said material for providing a transparent solid comprises monomers to become a transparent solid polymer.
Claim 21
Dependent Claim
76 words
The method of claim 17 further comprising the steps of: irradiating light on a portion of one of the substrates which overlaps the other one of the substrates after said joining step with portions of the substrates other than said portion masked to change said monomers into said transparent solid polymer; and removing a portion of said liquid crystal layer in which said monomers are not changed into said transparent solid polymer by said irradiating step.
Claim 22
Dependent Claim
41 words
The method of claim 15 wherein said material for providing a transparent solid comprises a transparent solid polymer selected from the group consisting of polyethylene, polymethacrylate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, polyester, polyamide resin, polyethylene terephthalate, fluoroplastics, and silicone resin.
Claim 23
Dependent Claim
17 words
The method of claim 15 wherein said spacers comprise balls and organic matters coated on said balls.
Claim 24
Dependent Claim
24 words
The method of claim 15 wherein said substrates are pressed towards one another under a pressure of from 1 to 5 kg/cm 2 .
Claim 25
Independent Claim
83 words
A method for manufacturing a liquid crystal device comprising the steps of: forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to a substrate to form crystal layer on said substrate; dispersing spacers on said liquid crystal layer; joining said substrate with another substrate with said liquid crystal layer and said spacers therebetween after said dispersing step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 26
Independent Claim
83 words
A method for manufacturing a liquid crystal device comprising the steps of: forming a mixture including a liquid crystal material and a material for providing a transparent solid; applying said mixture to a substrate to form crystal layer on said substrate; dispersing spacers on said liquid crystal layer; joining said substrate with another substrate with said liquid crystal layer and said spacers therebetween after said dispersing step; and curing said material for providing the transparent solid while pressing said substrates toward one another.
Claim 27
Dependent Claim
41 words
The method of claim 22 wherein said material for providing a transparent solid comprises a transparent solid polymer selected from the group consisting of polyethylene, polymethacrylate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, polyester, polyamide resin, polyethylene terephthalate, fluoroplastics, and silicone resin.
Claim 28
Dependent Claim
24 words
The method of claim 22 wherein said substrates are pressed towards one another under a pressure of from 1 to 5 kg/cm 2 .
References Cited (Backward Citations)
US4222635A
Cited
US4276110A
Cited
US4705360A
Cited
US4728309A
Cited
US4688900A
Cited
US4865672A
Cited
US4749833A
Cited
US4994204A
Cited
US5079572A
Cited
US5296063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-11 | 1999-06-12 | 1999-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-11 | 2003-06-12 | 2003-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-11 | 2007-06-12 | 2007-12-12 | $7700.00 | Window Closed / Lapsed |