US5530266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal image display unit and method for fabricating semiconductor optical member
Assignee: Canon Inc
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Filing: 1994-05-13
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Granted: 1996-06-25
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Expires: 2014-05-13
Abstract
Abstract A liquid crystal image display unit created on a substrate non-transparent to the light in the visible radiation area, characterized in that a portion beneath a liquid crystal pixel part on said substrate is removed, so that the light is made transmissive through said liquid crystal pixel part.
Inventors
- 👤 Takao Yonehara
- 👤 Mamoru Miyawaki
- 👤 Akira Ishizaki
- 👤 Junichi Hoshi
- 👤 Masaru Sakamoto
- 👤 Shigetoshi Sugawa
- 👤 Shunsuke Inoue
- 👤 Toru Koizumi
- 👤 Tetsunobu Kohchi
- 👤 Kiyofumi Sakaguchi
- 👤 Takanori Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:17
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13454; H; H10; H10D; H10D86/00; H10D86/201; H10D86/40; H10D86/421; H10D86/427; H10D86/60; G02F1/136; G02F1/1362; G02F1/136277; G02F1/136281; G02F2202/00; G02F2202/10; G02F2202/105; Y; Y10; Y10S; Y10S438/00; Y10S438/96
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
A liquid crystal display, comprising: an insulating layer, an epitaxial semiconductor layer disposed on one side of said insulating layer and a monocrystalline semiconductor layer disposed on another side of said insulating layer, said liquid crystal display further comprising a pixel portion and a driving circuit provided outside said pixel portion, wherein said pixel portion comprises switching elements and said switching elements and said driving circuit are provided within said epitaxial semiconductor layer; and wherein said monocrystalline semiconductor layer is provided only on areas of said insulating layer other than beneath said pixel portion.
Claim 2
Dependent Claim
94 words
A liquid crystal display, comprising: an insulating layer, an epitaxial semiconductor layer disposed on one side of said insulating layer and a monocrystalline semiconductor layer disposed on another side of said insulating layer, said liquid crystal display further comprising a pixel portion and a driving circuit provided outside said pixel portion, wherein said pixel portion comprises switching elements and said switching elements and said driving circuit are provided within said epitaxial semiconductor layer; and wherein said monocrystalline semiconductor layer is provided only on areas of said insulating layer other than beneath said pixel portion.
Claim 3
Dependent Claim
20 words
A liquid crystal display according to claim 1, wherein said epitaxial semiconductor layer and said monocrystalline semiconductor layer comprise Si.
Claim 4
Dependent Claim
16 words
A liquid crystal display according to claim 1 or 2, wherein said insulating layer is SiO.
Claim 5
Dependent Claim
44 words
A liquid crystal display according to claim 1, further comprising a transparent member, said transparent member being provided on the same side of said insulating layer as said monocrystalline semiconductor layer, said transparent member being provided on said insulating layer beneath said pixel portion.
Claim 6
Dependent Claim
14 words
A liquid crystal display according to claim 4, wherein said transparent member comprises SiN.
Claim 7
Dependent Claim
14 words
A liquid crystal display according to claim 4, wherein said transparent member comprises resin.
Claim 8
Dependent Claim
22 words
A liquid crystal display according to claim 1, wherein said monocrystalline semiconductor layer tapers toward said insulating layer around said pixel portion.
Claim 9
Dependent Claim
21 words
A liquid crystal display according to claim 3, wherein said switching element comprises a transistor and said driving circuit comprises transistors.
Claim 10
Dependent Claim
27 words
A liquid crystal display according to claim 8, wherein said driving circuit transistors have active layers with a thickness greater than that of said switching element transistor.
Claim 11
Dependent Claim
25 words
A liquid crystal display according to claim 9, wherein said switching element transistor has a MOS structure and said driving circuit is a C-MOS inverter.
Claim 12
Dependent Claim
27 words
A liquid crystal display according to claim 9, further comprising potential setting means provided in said epitaxial semiconductor layer in an area other than said pixel portion.
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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) | 1999-06-25 | 1999-12-25 | 2000-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-25 | 2003-12-25 | 2004-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-25 | 2007-12-25 | 2008-06-25 | $7700.00 | Window Closed / Lapsed |