Patent US1007878A successfully refreshed from Google Patents.
US5459337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor display device with red, green and blue emission
Assignee: Sony Corp
•
Filing: 1994-02-16
•
Granted: 1995-10-17
•
Expires: 2014-02-16
Abstract
Abstract A light emitting device and a method of fabricating the same in which a first cladding layer is formed on a substrate, then red, green and blue light emitting portions each made of II-VI semiconductor are formed in a horizontal direction with respect to a surface of the substrate on the first cladding layer, then a second cladding layer is formed on the light emitting portions, and the red, green and blue light emitting portions are electrically separated from each other so that three primary color light emitting portions of a self luminous type are formed on the same substrate through single crystal growth process by changing composition of a compound semiconductor layer.
Inventors
- 👤 Satoshi Ito
- 👤 Futoshi Hiei
- 👤 Akira Ishibashi
- 👤 Atsushi Toda
- 👤 Norikazu Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:53
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/822; H10H20/823; H10H29/00; H10H29/10; H10H29/14; H10H29/142; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/925; Y10S438/942; Y10S438/944
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
A light emitting device comprising: a substrate; a first cladding layer provided on said substrate; red, green and blue light emitting portions each made of II-VI semiconductor and formed in parallel to a surface of said substrate on said first cladding layer; and a second cladding layer provided on said light emitting portions, wherein each of said red, green and blue light emitting portions contains at least one of Zn and Cd, and Zn compositions of said respective light emitting portions are increased in the order of said red, green and blue light emitting portions.
Claim 2
Dependent Claim
95 words
A light emitting device comprising: a substrate; a first cladding layer provided on said substrate; red, green and blue light emitting portions each made of II-VI semiconductor and formed in parallel to a surface of said substrate on said first cladding layer; and a second cladding layer provided on said light emitting portions, wherein each of said red, green and blue light emitting portions contains at least one of Zn and Cd, and Zn compositions of said respective light emitting portions are increased in the order of said red, green and blue light emitting portions.
Claim 3
Dependent Claim
51 words
A light emitting device according to claim 1, wherein said red light emitting portion contains Cd as a II group element thereof, said green light emitting portion contains Zn and Cd as a II group element thereof and said blue light emitting portion contains Zn as a II group element thereof.
Claim 4
Dependent Claim
18 words
A light emitting device according to claim 2, wherein said red light emitting portion is made of Cd--(Se,Te).
Claim 5
Dependent Claim
18 words
A light emitting device according to claim 2, wherein said green light emitting portion is made of (Zn,Cd)--(Se,Te).
Claim 6
Dependent Claim
18 words
A light emitting device according to claim 2, wherein said blue light emitting portion is made of Zn--(Se,Te).
Claim 7
Dependent Claim
18 words
A light emitting device according to claim 1, wherein said light emitting portions have a multi-quantum well structure.
Claim 8
Dependent Claim
19 words
A light emitting device according to claim 1, wherein said first and second cladding layers are made of ZnMgSSe.
Claim 9
Dependent Claim
18 words
A light emitting device according to claim 1, further comprising a light shielding structure formed on said substrate.
Claim 10
Dependent Claim
21 words
A light emitting device comprising a plurality of said light emitting portions according to claim 1 arranged in a one-dimensional array.
Claim 11
Dependent Claim
21 words
A light emitting device comprising a plurality of the light emitting portions according to claim 1 arranged in a two-dimensional array.
References Cited (Backward Citations)
JPS5946073A
Cited
US4992837A
Cited
JPH02283079A
Cited
US5010376A
Cited
US5296718A
Cited
US5324963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-16 | 1999-04-17 | 1999-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-16 | 2003-04-17 | 2003-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-16 | 2007-04-17 | 2007-10-17 | $7700.00 | Window Closed / Lapsed |