Patent US3584183A successfully refreshed from Google Patents.
US3584183A
Expired / Lapsed
US
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Laser encoding of diode arrays
Assignee: Boeing North American Inc
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Filing: 1968-10-03
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Granted: 1971-06-08
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Expires: 1988-10-03
Abstract
Abstract A method and means for encoding a silicon-on-sapphire diode array by bombarding selected diodes or diode connections with a pulsed laser beam to burn away chosen silicon and metallization areas. Removal of these areas from the diode matrix constitutes an encoding process by elimination of the selected connection and/or diode.
Inventors
- 👤 Frank L Chiaretta
- 👤 James A Luisi
- 👤 Allen D Sypherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/06; H; H10; H10W; H10W20/00; H10W20/40; H10W20/49; H10W20/493; H10W20/494; H10B; H10B20/00; Y; Y10; Y10S; Y10S148/00; Y10S148/071; Y10S148/15; Y10S257/00; Y10S257/926
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
The method of claim 1 wherein said pulsed laser beam is focused on said diode connections through said sapphire substrate.
Claim 2
Dependent Claim
17 words
The method of claim 1 wherein said pulsed laser beam is focused directly onto the diode connection.
Claim 3
Independent Claim
83 words
A system for encoding a diode array fabricated on a dielectric substrate, said diode array comprising a plurality of rows and columns of conductors having diodes initially connected between each of said rows and columns of conductors, said system comprising, laser means for bombarding selected diode connections with a pulsed laser beam for electrically removing said selected diode connections, means for sequentially moving said laser means from one selected diode connection to another selected diode connection until the diode array is completely encoded.
Claim 4
Independent Claim
53 words
A method for encoding a diode array fabricated on a dielectric substrate, said array having diodes initially connected between rows and columns of conductors, said method comprising the step of, positioning a laser at a selected diode location, pulsing said laser for producing a pulsed laser beam, said beam burning away the diode.
Claim 5
Independent Claim
75 words
A system for encoding a diode array fabricated on a dielectric substrate, said diode array comprising a plurality of rows and columns of conductors having diodes initially connected between each of said rows and columns of conductors, said system comprising, laser means for bombarding selected diodes for electrically removing diodes from selected connections, means for sequentially moving said laser means from one selected diode to another selected diode until the diode array is completely encoded.
References Cited (Backward Citations)
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |