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US5057244A
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Transparent, electrically conductive film
Assignee: Ricoh Co Ltd
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Filing: 1986-01-06
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Granted: 1991-10-15
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Expires: 2006-01-06
Abstract
Abstract A transparent, electrically conductive film suitable for use as a transparent electrode in various optical devices is provided. The film comprises a first element selected from a first group consisting of Sn, Pb, and In, at least one second element selected from a second group consisting of N, O, S, and H, and C.
Inventors
- 👤 Shoji Nitta
- 👤 Yukio Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C03; C03C; C03C17/00; C03C17/22; C03C17/225; C03C17/34; C03C17/3411; C03C17/3429; C03C17/3435; C03C17/3441; C03C17/3464; C03C17/347; C03C17/3482; C23C16/301; C23C16/303; C23C16/32; C23C16/34; H; H10; H10F; H10F71/00; H10F71/138; H10F77/00; H10F77/20; H10F77/244; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/281; C03C2217/282; C03C2217/287; C03C2217/288; C03C2217/29; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
A reductive, transparent and electrically conductive film comprising C and a first element which is selected from the group consisting of Sn, Pb, In, and Tl, in proportions defined by M x C z , where M=Sn, Pb, In or Tl and x+z=1.
Claim 2
Dependent Claim
43 words
A reductive, transparent and electrically conductive film comprising C and a first element which is selected from the group consisting of Sn, Pb, In, and Tl, in proportions defined by M x C z , where M=Sn, Pb, In or Tl and x+z=1.
Claim 3
Dependent Claim
24 words
The film of claim 1, further comprising at least one element which is selected from the group consisting of H, O, N and S.
Claim 4
Dependent Claim
97 words
The film of claim 1, further comprising at least one additional element, wherein: (i) when said first element is selected from the group consisting of Sn and Pb, said at least one additional elements is an impurity selected from the group consisting of the elements B, Al, Ga, In, Tl, N, P, As, Sb, and Bi; but (ii) when said first element is selected from the group consisting of In and Tl, said at least one additional element is an impurity selected from the group consisting of the elements Zn, Cd, Hg, Si, Ge, Sn and Pb.
Claim 5
Dependent Claim
112 words
The film of claim 1, wherein said film consists essentially of a compound which is selected from the group consisting Sn x C 1-x , Sn x C y O z , Sn x C y N z , Sn x C y S z , Pb x C 1-x , Pb x C y O z , Pb x C y N z , Pb x C y S z , In x C 1-x , In x C y O z , In x C y N z , and In x C y S z , wherein x is more than zero but less than unity while satisfying x+y+z=1.
Claim 6
Dependent Claim
111 words
The film of claim 2, wherein said film consists essentially of a hydride which is selected from the group consisting of Sn x C 1-x :H, Sn x C y O:H, Sn x C y N z , Sn x C y S z :H, Pb x C 1-x :H, Pb x C y O z :H, Pb x C y N z :H, Pb x C y S z :H, In x C 1-x :H, In x C y O z :H, In x C y N z :H, and In x C y S z :H, wherein x is more than zero but less than unity while satisfying x+y+z=1.
Claim 7
Dependent Claim
24 words
The film of claim 3 wherein said at least one additional element is added in a range between 1 ppm and 20 atomic %.
References Cited (Backward Citations)
US4387387A
Cited
US4673589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |