Patent US2287907A successfully refreshed from Google Patents.
US5543942A
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LCD microlens substrate with a lens array and a uniform material bonding member, each having a thermal resistance not lower than 150°C
Assignee: Omron Corp
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Filing: 1994-12-15
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Granted: 1996-08-06
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Expires: 2014-12-15
Abstract
Abstract The present invention discloses an opposed substrate for use in a liquid crystal display element, for example. The opposed substrate is constructed by a transparent substrate, microlenses formed on the substrate, a bonding layer, and cover glass. An alignment film and transparent electrodes are formed on the cover glass. The microlenses and the bonding layer are formed by selected resins which have thermal resistance to high temperatures not lower than 150° C., permit heating treatment for forming the alignment film, and satisfy the difference in the refractive indexes between the resins, .increment.n≧0.1, so as to enable the microlenses to have a numerical aperture not lower than 0.1. It is thus possible to prevent the decomposition of resins and separation of the microlens in heat treatment and to provide a high-quality, highly reliable liquid crystal display element.
Inventors
- 👤 Yoshihiro Mizuguchi
- 👤 Hiroshi Hamada
- 👤 Shigeru Aoyama
- 👤 Tsukasa Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:56
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/0006; G02B3/0012; G02B3/0031; B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00278; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133526
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
83 words
A microlens substrate comprising: a first transparent substrate; an array of converging members for converging incident light, said converging members being made of a material having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate; a second transparent substrate placed on said converging members; and a bonding member, made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate.
Claim 2
Dependent Claim
83 words
A microlens substrate comprising: a first transparent substrate; an array of converging members for converging incident light, said converging members being made of a material having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate; a second transparent substrate placed on said converging members; and a bonding member, made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate.
Claim 3
Dependent Claim
19 words
The microlens substrate according to claim 1, wherein said converging members are a microlens array or a lenticular lens.
Claim 4
Dependent Claim
23 words
The microlens substrate according to claim 2, wherein a numerical aperture of said microlens array or lenticular lens is not smaller than 0.1.
Claim 5
Dependent Claim
30 words
The microlens substrate according to claim 2, wherein the difference .increment.n in refractive indexes between said microlens array or lenticular lens and said bonding member is not smaller than 0.1.
Claim 6
Dependent Claim
21 words
The microlens substrate according to claim 1, wherein said converging members and said bonding member are formed by ultraviolet sensitive resins.
Claim 7
Dependent Claim
130 words
A liquid crystal display element comprising an opposed substrate including: (a) a first transparent substrate; (b) an array of converging members for converging incident light, said converging members having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate; (c) a second transparent substrate placed on said converging members, and (d) a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate, wherein transparent electrodes, an alignment film, and a black matrix are formed on said opposed substrate, said liquid crystal display element further comprising: an active matrix substrate; and a liquid crystal layer formed between said opposed substrate and said active matrix substrate.
Claim 8
Dependent Claim
130 words
A liquid crystal display element comprising an opposed substrate including: (a) a first transparent substrate; (b) an array of converging members for converging incident light, said converging members having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate; (c) a second transparent substrate placed on said converging members, and (d) a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate, wherein transparent electrodes, an alignment film, and a black matrix are formed on said opposed substrate, said liquid crystal display element further comprising: an active matrix substrate; and a liquid crystal layer formed between said opposed substrate and said active matrix substrate.
Claim 9
Dependent Claim
29 words
The liquid crystal display element according to claim 6, wherein said first transparent substrate, said second transparent substrate, and said active matrix substrate are formed by the same material.
Claim 10
Dependent Claim
23 words
The liquid crystal display element according to claim 6, wherein said converging members and said bonding member are formed by ultraviolet sensitive resins.
Claim 11
Dependent Claim
29 words
The liquid crystal display element according to claim 6, wherein said converging members are a microlens array or a lenticular lens having a numerical aperture not smaller than 0.1.
Claim 12
Dependent Claim
44 words
The liquid crystal display element according to claim 6, wherein said converging members are a microlens array or a lenticular lens, and the difference .increment.n in refractive indexes between said microlens array or lenticular lens and said bonding member is not smaller than 0.1.
Claim 13
Dependent Claim
171 words
A liquid crystal projector using a liquid crystal display element, said liquid crystal display element comprising: (1) an opposed substrate including a first transparent substrate, an array of converging members for converging incident light, said converging members having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate, a second transparent substrate placed on said converging members, and a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate, wherein transparent electrodes, an alignment film and a black matrix are formed on said opposed substrate; (2) an active matrix substrate; and (3) a liquid crystal layer formed between said opposed substrate and said active matrix substrate, said liquid crystal projector comprising a projection lens for projecting light transmitted through said liquid crystal display element onto a screen, wherein a numerical aperture of said projection lens is larger than a numerical aperture of said converging members.
Claim 14
Dependent Claim
171 words
A liquid crystal projector using a liquid crystal display element, said liquid crystal display element comprising: (1) an opposed substrate including a first transparent substrate, an array of converging members for converging incident light, said converging members having thermal resistance to high temperatures not lower than 150° C. and being arranged on said first transparent substrate, a second transparent substrate placed on said converging members, and a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C., for bonding said converging members and said second transparent substrate, wherein transparent electrodes, an alignment film and a black matrix are formed on said opposed substrate; (2) an active matrix substrate; and (3) a liquid crystal layer formed between said opposed substrate and said active matrix substrate, said liquid crystal projector comprising a projection lens for projecting light transmitted through said liquid crystal display element onto a screen, wherein a numerical aperture of said projection lens is larger than a numerical aperture of said converging members.
Claim 15
Dependent Claim
22 words
The liquid crystal projector according to claim 11, wherein said converging members and said bonding member are formed by ultraviolet sensitive resin.
Claim 16
Dependent Claim
28 words
The liquid crystal projector according to claim 11, wherein said converging members are a microlens array or a lenticular lens having a numerical aperture not smaller than 0.1.
Claim 17
Dependent Claim
43 words
The liquid crystal projector according to claim 11, wherein said converging members are a microlens array or a lenticular lens, and the difference .increment.n in refractive indexes between said microlens array or lenticular lens and said bonding member is not smaller than 0.1.
Claim 18
Independent Claim
82 words
A method for manufacturing a microlens substrate comprising the steps of: preparing a first transparent substrate; forming an array of converging means, made of a material having a thermal resistance to high temperatures not lower than 150° C. on said first transparent substrate, for converging incident light; preparing a second transparent substrate; and bonding said converging means and said second transparent substrate with a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C.
Claim 19
Independent Claim
82 words
A method for manufacturing a microlens substrate comprising the steps of: preparing a first transparent substrate; forming an array of converging means, made of a material having a thermal resistance to high temperatures not lower than 150° C. on said first transparent substrate, for converging incident light; preparing a second transparent substrate; and bonding said converging means and said second transparent substrate with a bonding member made of a uniform material having thermal resistance to high temperatures not lower than 150° C.
Claim 20
Dependent Claim
33 words
The method of claim 15, further including the subsequent step of: forming transparent electrodes, an alignment film, and a black matrix on said second transparent substrate under temperatures not lower than 150° C.
Claim 21
Dependent Claim
16 words
The method of claim 15, wherein the bonding member is a single material including photosensitive resin.
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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) | 1999-08-06 | 2000-02-05 | 2000-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-06 | 2004-02-05 | 2004-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-06 | 2008-02-05 | 2008-08-06 | $7700.00 | Window Closed / Lapsed |