Patent US5113233A successfully refreshed from Google Patents.
US5113233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound semiconductor luminescent device
Assignee: Sharp Corp
•
Filing: 1989-09-01
•
Granted: 1992-05-12
•
Expires: 2009-09-01
Abstract
Abstract A compound semiconductor luminescent device is disclosed which comprises a semiconductor substrate and a multi-layered structure disposed on the substrate, the multi-layered structure comprising at least one conductive layer, a luminescent layer, and a current injection layer, wherein the substrate and the layers are made of at least one kind of II-VI group compound semiconductor.
Inventors
- 👤 Masahiko Kitagawa
- 👤 Yoshitaka Tomomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:41
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/84; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H01S5/327; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H10H20/052; H10H20/81; H10H20/822; H10H20/823; H10H20/8232; H10H20/816
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A compound semiconductor luminescent device comprising a ZnS high-resistivity single-crystal substrate, a ZnS first conductive layer of a first conductivity formed on said substrate, a ZnS x Se 1-x second conductive layer of the first conductivity formed on said first conductive layer, a ZnS x Se 1-x luminescent layer of the first conductivity formed on said second conductive layer, and a ZnS high-resistivity current injection layer formed on said luminescent layer.
Claim 2
Dependent Claim
71 words
A compound semiconductor luminescent device comprising a ZnS high-resistivity single-crystal substrate, a ZnS first conductive layer of a first conductivity formed on said substrate, a ZnS x Se 1-x second conductive layer of the first conductivity formed on said first conductive layer, a ZnS x Se 1-x luminescent layer of the first conductivity formed on said second conductive layer, and a ZnS high-resistivity current injection layer formed on said luminescent layer.
Claim 3
Dependent Claim
59 words
A compound semiconductor luminescent device according to claim 1, further comprising a negative metal electrode disposed on the upper face of said first conductive layer, a positive metal electrode disposed on the upper face of said current injection layer, and a protective film formed on said current injection layer so as to cover part of said positive metal electrode.
Claim 4
Dependent Claim
22 words
A compound semiconductor luminescent device according to claim 1, wherein said mole fraction x is in the range of 0.75 to 0.95.
Claim 5
Dependent Claim
51 words
A compound semiconductor luminescent device comprising a ZnS high-resistivity single-crystal substrate, a ZnS conductive layer of a first conductivity formed on said substrate, a ZnS luminescent layer of the first conductivity formed on said conductive layer, and a ZnS current injection layer of a second conductivity formed on said luminescent layer.
Claim 6
Dependent Claim
51 words
A compound semiconductor luminescent device comprising a ZnS high-resistivity single-crystal substrate, a ZnS conductive layer of a first conductivity formed on said substrate, a ZnS luminescent layer of the first conductivity formed on said conductive layer, and a ZnS current injection layer of a second conductivity formed on said luminescent layer.
Claim 7
Dependent Claim
62 words
A compound semiconductor luminescent device according to claim 4, further comprising a negative metal electrode disposed on the upper face of said conductive layer, at least one positive metal electrode disposed on the upper face of said current injection layer, and a protective film formed at least on said current injection layer so as to cover part of said positive metal electrode.
Claim 8
Dependent Claim
97 words
A compound semiconductor luminescent device comprising a ZnS single-crystal substrate, a ZnS first conductive layer of a first conductivity formed on said substrate, a ZnS z Se 1-z second conductive layer of the first conductivity formed on said first conductive layer, a ZnS z Se 1-z luminescent layer of the first layer of the first conductivity formed on said second conductive layer, a ZnS z Se 1-z current injection layer of a second conductivity formed on said luminescent layer, and a ZnS t Se 1-t protective layer of the second conductivity formed on said current injection layer.
Claim 9
Dependent Claim
97 words
A compound semiconductor luminescent device comprising a ZnS single-crystal substrate, a ZnS first conductive layer of a first conductivity formed on said substrate, a ZnS z Se 1-z second conductive layer of the first conductivity formed on said first conductive layer, a ZnS z Se 1-z luminescent layer of the first layer of the first conductivity formed on said second conductive layer, a ZnS z Se 1-z current injection layer of a second conductivity formed on said luminescent layer, and a ZnS t Se 1-t protective layer of the second conductivity formed on said current injection layer.
Claim 10
Dependent Claim
58 words
A compound semiconductor luminescent device according to claim 6, further comprising a negative metal electrode disposed on the upper face of said first conductive layer, a positive metal electrode disposed on the upper face of said protective layer, and a protective film formed on said current injection layer so as to cover part of said positive metal electrode.
Claim 11
Dependent Claim
31 words
A compound semiconductor luminescent device according to claim 6, wherein said mole fraction z is in the range of 0.75 to 0.95 and said mole fraction t satisfies the relation: z+0.05≦t≦1.
References Cited (Backward Citations)
US4482841A
Cited
JPS5911688A
Cited
JPS59172279A
Cited
US4680602A
Cited
JPS631081A
Cited
US4868615A
Cited
JPS63213377A
Cited
JPH01157576A
Cited
US4988579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |