Patent US5262658A successfully refreshed from Google Patents.
US5262658A
Expired / Lapsed
US
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Thermally stabilized light emitting diode structure
Assignee: Xerox Corp
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Filing: 1991-12-24
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Granted: 1993-11-16
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Expires: 2011-12-24
Abstract
Abstract A light emitting diode structure is thermally stabilized by passing current through heater elements along the sides of the light emitting diode. A heater element is adjacent to and corresponding to each light emitting diode. The heater elements may be a resistive region or a p-n junction. The heater elements may be adjacent along one side of the light emitting diodes or on alternating sides of the individual light emitting diodes. The heater elements may be a single heater strip adjacent and along the length of the array of the light emitting diodes.
Inventors
- 👤 Henry P. Jankowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:37
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/858; H10H29/00; H10H29/10; H10H29/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A thermally stabilized light emitting diode array structure comprising: an array of a plurality of light emitting diodes, on a single substrate, plurality of heater elements, corresponding and adjacent to each of said light emitting diodes when said light emitting diodes are not emitting light such that heat generated from said adjacent heater elements is used to maintain a constant temperature within said light emitting diodes.
Claim 2
Dependent Claim
66 words
A thermally stabilized light emitting diode array structure comprising: an array of a plurality of light emitting diodes, on a single substrate, plurality of heater elements, corresponding and adjacent to each of said light emitting diodes when said light emitting diodes are not emitting light such that heat generated from said adjacent heater elements is used to maintain a constant temperature within said light emitting diodes.
Claim 3
Dependent Claim
18 words
The thermally stabilized light emitting diode array structure of claim 1 wherein said heater elements are resistive regions.
Claim 4
Dependent Claim
18 words
The thermally stabilized light emitting diode array structure of claim 1 wherein said heater elements are p-n junctions.
Claim 5
Dependent Claim
29 words
The thermally stabilized light emitting diode array structure of claim 1 wherein adjacent heater elements alternate on opposite sides of said array of a plurality of light emitting diodes.
Claim 6
Dependent Claim
37 words
The thermally stabilized light emitting diode array structure of claim 1 wherein said heater elements are on a separate substrate in thermal contact with said array of a plurality of light emitting diodes on a single substrate.
Claim 7
Dependent Claim
63 words
A thermally stabilized light emitting diode array structure comprising: an array of a plurality of light emitting diodes on a single substrate, a heater strip adjacent to each of said light emitting diodes when said light emitting diodes are not emitting light such that heat generated from said adjacent heater strip is used to maintain a constant temperature within said light emitting diodes.
Claim 8
Dependent Claim
63 words
A thermally stabilized light emitting diode array structure comprising: an array of a plurality of light emitting diodes on a single substrate, a heater strip adjacent to each of said light emitting diodes when said light emitting diodes are not emitting light such that heat generated from said adjacent heater strip is used to maintain a constant temperature within said light emitting diodes.
Claim 9
Dependent Claim
19 words
The thermally stabilized light emitting diode array structure of claim 6 wherein said heater strip is a resistive region.
Claim 10
Dependent Claim
19 words
The thermally stabilized light emitting diode array structure of claim 6 wherein said heater strip is a p-n junction.
Claim 11
Dependent Claim
37 words
The thermally stabilized light emitting diode array structure of claim 6 wherein said heater strip is on a separate substrate in thermal contact with said array of a plurality of light emitting diodes on a single substrate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |