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Light emitting semiconductor device matrix with non-single-crystalline semiconductor

Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1987-05-29
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Granted: 1989-09-19
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Expires: 2007-05-29
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Abstract

Abstract A light emitting semiconductor device which is provided with a first non-single-crystal semiconductor layer, a second non-single-crystal semiconductor layer formed on the first semiconductor layer and a third non-single-crystal semiconductor layer formed on the second semiconductor layer, or a first non-single-crystal semiconductor layer, many second non-single-crystal semiconductor layers formed on the first semiconductor layer and a third non-single-crystal semiconductor layer formed on the first semiconductor layer to cover the second semiconductor layers. The first and second semiconductor layers have either one or the other of p and n conductivity types, respectively. Semiconductors of the first, second and third layers are each doped with a dangling bond and recombination center neutralizer. The semiconductor of the second layer has a smaller energy gap than the semiconductors of the first and third layers.

Inventors

  • 👤 Shunpei Yamazaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 21:46
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/84; H10H20/81; H10H20/811; H10H20/813; H10H20/817; H10H20/818; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H10H20/841; H10H20/85; H10H20/857

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 95 words
A light emitting device comprising: a glass substrate; a plurality of first electrode strips extending in one direction and formed on said glass substrate; a non-single-crystalline semiconductor layer formed over said plurality of electrode strips and comprising two outer and one middle non-single-crystalline semiconductor, said middle non-single-crystalline semiconductor having a smaller energy gap than said outer non-single-crystalline semiconductors; and a plurality of second electrode strips extending in the direction perpendicular to said one direction, said first and second electrode strips defining a plurality of pixels on said semiconductor layer in the form of a matrix.
Claim 2
Dependent Claim 95 words
A light emitting device comprising: a glass substrate; a plurality of first electrode strips extending in one direction and formed on said glass substrate; a non-single-crystalline semiconductor layer formed over said plurality of electrode strips and comprising two outer and one middle non-single-crystalline semiconductor, said middle non-single-crystalline semiconductor having a smaller energy gap than said outer non-single-crystalline semiconductors; and a plurality of second electrode strips extending in the direction perpendicular to said one direction, said first and second electrode strips defining a plurality of pixels on said semiconductor layer in the form of a matrix.
Claim 3
Dependent Claim 15 words
The device of claim 1, wherein said semiconductor layer is formed with a PIN junction.

References Cited (Backward Citations)

US3500448A Cited
US4384299A Cited
US4217374A Cited
US4226898A Cited
US4409605A Cited
US4194935A Cited
US4377818A Cited
US4527179A Cited
US4593152A Cited
US4581820A Cited
US4695859A Cited
JPH0537998A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-09-18 1993-03-20 1993-09-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-09-18 1997-03-20 1997-09-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-09-18 2001-03-20 2001-09-19 $7700.00 Window Closed / Lapsed

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