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US4532174A
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Layer system for opto-electronic displays
Assignee: Siemens AG
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Filing: 1983-06-30
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Granted: 1985-07-30
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Expires: 2003-06-30
Abstract
Abstract A simplified, easily producible, strongly adherent, solderable and corrosion resistant layer system for opto-electronic displays is produced by vapor deposition techniques. In accordance with the invention, the layer system is formed of two layers; a transparent first layer formed of a nonsolderable oxide semiconductor, such as In 2 O 3 SnO 2 , and a second layer formed of a solderable, oxidation-resistant material, which is formed at least partially of a copper alloy containing an alloying additive consisting of a metal which is less noble than copper, illustratively CuMg.
Inventors
- 👤 Helmut Freller
- 👤 Heinrich Hassler
- 👤 Peter Schack
- 👤 Ludwig Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3607; C03C17/3649; C03C17/3668; C23; C23C; C23C28/00; G; G02; G02F; G02F1/00; G02F1/01; G02F1/0102; C03C2217/00; C03C2217/90; C03C2217/94; C03C2217/948; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
In a layer system for opto-electronic displays of the type having a first layer formed of a transparent, not solderable oxide semiconductor material the improvement comprising a second layer formed of a solderable oxidation-resistant material formed at least partially of a copper alloy having at least one alloying additive consisting of a metal which is less noble than copper and selected from the group of magnesium, aluminum, beryllium, gallium, germanium, silicon, tin, zinc, zirconium and chromium.
Claim 2
Dependent Claim
76 words
In a layer system for opto-electronic displays of the type having a first layer formed of a transparent, not solderable oxide semiconductor material the improvement comprising a second layer formed of a solderable oxidation-resistant material formed at least partially of a copper alloy having at least one alloying additive consisting of a metal which is less noble than copper and selected from the group of magnesium, aluminum, beryllium, gallium, germanium, silicon, tin, zinc, zirconium and chromium.
Claim 3
Dependent Claim
31 words
The layer system of claim 1 wherein the first layer has a thickness between 25 to 500 nm, and said second layer has a thickness of between 200 to 1200 nm.
Claim 4
Dependent Claim
37 words
The layer system of claim 1 wherein a portion of said second layer communicating with the atmosphere consists of between one-quarter to one-third of a copper alloy; the remainder of said second layer being essentially pure copper.
Claim 5
Dependent Claim
12 words
The layer system of claim 1 wherein second layer consists of CuMg.
Claim 6
Dependent Claim
18 words
The layer system of claim 1 wherein the first layer is In 2 O 3 SnO 2 .
Claim 7
Dependent Claim
23 words
The layer system of claim 1 wherein said alloying additive is added in an amount corresponding to between 0.2 to 10 atom percent.
Claim 8
Dependent Claim
23 words
The layer system of claim 6 wherein said alloying additive is added in an amount corresponding to between 1.5 to 2 atom percent.
Claim 9
Dependent Claim
26 words
A layer system for opto-electronic displays comprising: a first layer formed of In 2 O 3 SnO 2 ; and a second layer formed of CuMg.
Claim 10
Dependent Claim
26 words
A layer system for opto-electronic displays comprising: a first layer formed of In 2 O 3 SnO 2 ; and a second layer formed of CuMg.
References Cited (Backward Citations)
US4345000A
Cited
US4399194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |