Patent US4999682A successfully refreshed from Google Patents.
US4999682A
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US
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Electronic and optoelectronic laser devices utilizing light hole properties
Assignee: University of Minnesota System
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Filing: 1989-12-26
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Granted: 1991-03-12
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Expires: 2009-12-26
Abstract
Abstract Improved p-channel FETs and optoelectronic device make use of reduced hole effective mass achieved with quantum confinement. The devices include multiple one-dimensional p-channel FETs which have electrically induced and controllable one dimensional p-type semiconductor wires; square well two-dimensional p-channel FETs; and laser diodes and light emitting diodes which use one dimensional p-type semiconductor wires.
Inventors
- 👤 Jingming Xu
- 👤 Michael Shur
- 👤 Mark Sweeny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/819; H10H20/821; B; B82; B82Y; B82Y10/00; B82Y20/00; H01; H01S; H01S5/00; H01S5/20; H01S5/22; H01S5/2203; H01S5/30; H01S5/34; H10D; H10D30/00; H10D30/40; H10D30/43; H10D30/47; H10D30/471; H10D30/473; H10D30/4732; H10D84/00; H10D84/01; H10D86/00; H10D86/01; H10H20/062; H01S5/04; H01S5/042; H01S5/0421; H01S5/0422; H01S5/0424
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A radiation emitting semiconductor device comprising: an n-type body having a surface and a first end spaced apart from a second end; a first contact electrically connected to the first end of the n-type body; a second contact electrically connected to the second end of the n-type body; a plurality of generally parallel p-type conductive strips which are generally parallel to the surface of the n-type body and extend in a direction generally perpendicular to a direction from the first contact to the second contact; and a third contact electrically connected to the plurality of generally parallel p-type conductive strips.
Claim 2
Dependent Claim
100 words
A radiation emitting semiconductor device comprising: an n-type body having a surface and a first end spaced apart from a second end; a first contact electrically connected to the first end of the n-type body; a second contact electrically connected to the second end of the n-type body; a plurality of generally parallel p-type conductive strips which are generally parallel to the surface of the n-type body and extend in a direction generally perpendicular to a direction from the first contact to the second contact; and a third contact electrically connected to the plurality of generally parallel p-type conductive strips.
Claim 3
Dependent Claim
35 words
The device of claim 1 and further comprising: a plurality of generally parallel insulating walls separating the plurality of generally parallel p-type conductive strips and providing quantum confinement within the generally parallel p-type conductive strips.
Claim 4
Dependent Claim
33 words
The device of claim 2 wherein the insulating walls extend into the n-type body to form a 1-D n-type semiconductor wire adjacent to each of the plurality of generally parallel p-type conductive strips.
References Cited (Backward Citations)
US4331938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-11 | 1994-09-10 | 1995-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-11 | 1998-09-10 | 1999-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-11 | 2002-09-10 | 2003-03-12 | $7700.00 | Window Closed / Lapsed |