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US4838656A
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Transparent electrode fabrication
Assignee: Taliq Corp
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Filing: 1988-06-21
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Granted: 1989-06-13
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Expires: 2008-06-21
Abstract
Abstract A panel for a liquid crystal or other visual display is formed by depositing onto a transparent backing a transparent conductive material, such as indium-tin oxide, and then a metal such as nickel that will serve as a bus to power the transparent conductive material. The nickel is first etched to a bus configuration, and then the indium-tin oxide is etched to produce one or more picture elements.
Inventors
- 👤 Darrell Stoddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:21
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; H01H2201/00; H01H2201/022; H01H2201/026; H01H2201/028; H01H2207/00; H01H2219/00; H01H2219/002; H01H2219/01; H01H2219/012; H01H2229/00; H01H2229/016; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/22; H05K3/24; H05K3/244
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
A method of producing a transparent electrode, which comprises: (a) applying a transparent conductive material to a transparent thin film substrate; (b) applying a metal to the transparent conductive material; (c) then etching the metal to form one or more busses; and (d) optionally etching the transparent conductive material to form one or more elements connected to one or more of said busses.
Claim 2
Independent Claim
63 words
A method of producing a transparent electrode, which comprises: (a) applying a transparent conductive material to a transparent thin film substrate; (b) applying a metal to the transparent conductive material; (c) then etching the metal to form one or more busses; and (d) optionally etching the transparent conductive material to form one or more elements connected to one or more of said busses.
Claim 3
Dependent Claim
19 words
A method according to claim 1, in which step (a) is carried out by a method that comprises sputtering.
Claim 4
Dependent Claim
19 words
A method according to claim 1, in which step (b) is carried out by a method that comprises sputtering.
Claim 5
Dependent Claim
15 words
A method according to claim 1, in which the backing comprises a flexible polymeric film.
Claim 6
Dependent Claim
17 words
A method according to claim 1, in which the metal comprises nickel, copper, gold, silver or aluminum.
Claim 7
Dependent Claim
26 words
A method according to claim 1, in which the transparent conductor comprises indium oxide, tin oxide, indium-tin oxide, or a transparent gold coating rendered substantially anti-reflective.
Claim 8
Dependent Claim
25 words
A method according to claim 1, in which busses by means of which the elements are activated consist essentially of metal applied in step (b).
Claim 9
Dependent Claim
17 words
A method according to claim 1, in which the thin film has a thickness of 25-200 micrometers.
Claim 10
Dependent Claim
14 words
An electrode for a visual display produced by a method according to claim 1.
Claim 11
Dependent Claim
23 words
A liquid crystal display comprising an electrode produced by a method according to claim 1, a panel, and a liquid crystal material therebetween.
Claim 12
Dependent Claim
18 words
A transparent touch panel comprising an electrode produced by a method according to claim 1 and a panel.
Claim 13
Independent Claim
67 words
A method of producing a transparent electrode which method comprises: (a) applying a transparent conductive material to a transparent substrate; (b) applying a metal to the transparent conductive material; (c) then selectively etching the metal to form one or more busses; and (d) before or after step (c), etching the transparent conductive material to form one or more elements connected to one or more of said busses.
Claim 14
Independent Claim
67 words
A method of producing a transparent electrode which method comprises: (a) applying a transparent conductive material to a transparent substrate; (b) applying a metal to the transparent conductive material; (c) then selectively etching the metal to form one or more busses; and (d) before or after step (c), etching the transparent conductive material to form one or more elements connected to one or more of said busses.
Claim 15
Dependent Claim
16 words
A method according to claim 12, in which step (d) is carried out after step (c).
Claim 16
Dependent Claim
39 words
A method according to claim 12, in which steps (c) and (d) are carried out over part of the surface of the substrate, and then a further etching step is carried out to expose elements of transparent conductive material.
Claim 17
Dependent Claim
21 words
A method according to claim 12, in which step (d) produces elements of area of at least 5 mm 2 .
Claim 18
Independent Claim
73 words
A method of producing a transparent electrode, having one or more elements each of area at least 5 mm 2 , which comprises: (a) applying a transparent conductive material to a transparent substrate to form one or more elements of area of at least 5 mm 2; (b) applying a metal to the transparent conductive material; and (c) etching the metal to form one or more busses connected to the element or elements.
Claim 19
Independent Claim
73 words
A method of producing a transparent electrode, having one or more elements each of area at least 5 mm 2 , which comprises: (a) applying a transparent conductive material to a transparent substrate to form one or more elements of area of at least 5 mm 2; (b) applying a metal to the transparent conductive material; and (c) etching the metal to form one or more busses connected to the element or elements.
Claim 20
Dependent Claim
17 words
A method according to claim 16, in which said area is at least 30 mm 2 .
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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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |