US5550658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflector for liquid crystal display having a non-precious metal layer and a precious metal layer successively formed on a plastic film
Assignee: Sharp Corp
•
Filing: 1994-08-26
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Granted: 1996-08-27
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Expires: 2014-08-26
Abstract
Abstract A reflector for a liquid crystal display according to the invention includes: a first metal layer containing a non-precious metal; a second metal layer formed on the first metal layer and containing a precious metal.
Inventors
- 👤 Shirai Yoshihiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
50 words
A reflector for a liquid crystal display comprising: a first metal layer formed on a plastic film and containing a non-precious metal; and a second metal layer formed on the first metal layer and containing a precious metal, wherein the first metal layer has a thickness of approximately 400-500 Angstroms.
Claim 2
Dependent Claim
50 words
A reflector for a liquid crystal display comprising: a first metal layer formed on a plastic film and containing a non-precious metal; and a second metal layer formed on the first metal layer and containing a precious metal, wherein the first metal layer has a thickness of approximately 400-500 Angstroms.
Claim 3
Dependent Claim
28 words
A reflector for a liquid crystal display according to claim 1, wherein the second metal layer has a higher optical reflectivity than that of the first metal layer.
Claim 4
Dependent Claim
32 words
A reflector for a liquid crystal display according to claim 1, wherein a non-precious metal contained in the first metal layer is a material selected from a group including aluminum and copper.
Claim 5
Dependent Claim
32 words
A reflector for a liquid crystal display according to claim 1, wherein the precious metal contained in the second metal layer is a material selected from a group including gold and silver.
Claim 6
Dependent Claim
32 words
A reflector for a liquid crystal display according to claim 1, wherein the thickness of the second metal layer is equal to or larger than 50 angstroms and smaller than 500 angstroms.
Claim 7
Dependent Claim
32 words
A reflector for a liquid crystal display according to claim 1, wherein the thickness of the second metal layer is equal to or larger than 100 angstroms and smaller than 300 angstroms.
Claim 8
Dependent Claim
29 words
A reflector for a liquid crystal display according to claim 1, wherein the thickness of the second metal layer is smaller than the thickness of the first metal layer.
Claim 9
Dependent Claim
25 words
A reflector for a liquid crystal display according to claim 1, wherein the reflector has a transparent protective film formed on the second metal layer.
Claim 10
Dependent Claim
19 words
A reflector for a liquid crystal display according to claim 8, wherein the transparent film contains a silicon oxide.
Claim 11
Dependent Claim
24 words
A reflector for a liquid crystal display according to claim 1, wherein the reflector has a polarizing film formed above the second metal layer.
Claim 12
Dependent Claim
23 words
A reflector for a liquid crystal display according to claim 10, wherein the reflector has a retardation film formed above the polarizing film.
Claim 13
Dependent Claim
20 words
A reflector for a liquid crystal display according to claim 1, wherein the surface of the plastic film is roughened.
Claim 14
Dependent Claim
42 words
A reflector for a liquid crystal display according to claim 1, wherein the plastic film is selected from a group consisting of a polyethylene terephthalate film, a polypropylene film, a polyamide film, a polycarbonate film, an acetate film and an acrylic film.
Claim 15
Dependent Claim
53 words
A reflector for a liquid crystal display comprising: a plastic film; a first metal layer formed of a metal foil attached to the plastic film via an adhesive layer, the first metal layer containing a non-precious metal; and a second metal layer formed on the first metal layer and containing a precious metal.
Claim 16
Dependent Claim
53 words
A reflector for a liquid crystal display comprising: a plastic film; a first metal layer formed of a metal foil attached to the plastic film via an adhesive layer, the first metal layer containing a non-precious metal; and a second metal layer formed on the first metal layer and containing a precious metal.
Claim 17
Dependent Claim
31 words
A reflector for a liquid crystal display according to claim 14, wherein the surface of the metal foil is roughened and the metal foil has a thickness of approximately 3-30 micrometers.
Claim 18
Dependent Claim
23 words
A reflector for a liquid crystal display according to claim 14, wherein the second metal layer has a thickness of approximately 50-500 Angstroms.
Claim 19
Dependent Claim
42 words
A reflector for a liquid crystal display according to claim 14, wherein the plastic film is selected from a group consisting of a polyethylene terephthalate film, a polypropylene film, a polyamide film, a polycarbonate film, an acetate film and an acrylic film.
Claim 20
Dependent Claim
55 words
A reflector for a liquid crystal display comprising: a plastic film; a first metal layer formed of a metal paint applied on the plastic film, the metal paint including a mixture of non-precious metal flakes and a resin material; and a second metal layer formed on the first metal layer and containing a precious metal.
Claim 21
Dependent Claim
55 words
A reflector for a liquid crystal display comprising: a plastic film; a first metal layer formed of a metal paint applied on the plastic film, the metal paint including a mixture of non-precious metal flakes and a resin material; and a second metal layer formed on the first metal layer and containing a precious metal.
Claim 22
Dependent Claim
23 words
A reflector for a liquid crystal display according to claim 18, wherein the second metal layer has a thickness of approximately 50-500 Angstroms.
Claim 23
Dependent Claim
42 words
A reflector for a liquid crystal display according to claim 18, wherein the plastic film is selected from a group consisting of a polyethylene terephthalate film, a polypropylene film, a polyamide film, a polycarbonate film, an acetate film and an acrylic film.
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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) | 1999-08-27 | 2000-02-26 | 2000-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-27 | 2004-02-26 | 2004-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-27 | 2008-02-26 | 2008-08-27 | $7700.00 | Window Closed / Lapsed |