US3821775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge emission gaas light emitter structure
Assignee: Honeywell Inc
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Filing: 1973-08-13
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Granted: 1974-06-28
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Expires: 1993-08-13
Abstract
Abstract A LIGHT EMITTER STRUCTURE IN WHICH THE LIGHT OUTPUT IS PREMARILY IN THE FORM OF EDGE EMISSION. THE STRUCTURE IS A P-SIDE UP PLANAR CYLINDRICAL UNIT HAVING A N-TYPE MAIN BDY INTO WHICH S DIFFUSED A REDUCED DIAMETER P-TYPE REGION. A MAJOR PORTION OF BOTH THE N-TYPE AND P-TYPE REGIONS ARE COVERED WITH EVAPORATED AND ALLOYED METAL CONTACTS. THE DEVICE IS DESIGNED FOR MOUNTING N-SIDE DOWN WITH CONNECTION TO THE ANODE OR PTYPE LAYER BEING TYPICALLY MADE BY GOLD BALL OR THERMAL-COMPRESSION BOND TO THE ALLOYED METAL OHMIC CONTACT ON THE PTYPE REGION. SEVERAL EMBODIMENTS ARE DISCLOSED. ALSO DISCLOSED ARE SEVERAL MOUNTING TECHNIQUES.
Inventors
- 👤 J Biard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:23
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/857; H10H20/855; H10H20/856; H10W; H10W72/00; H10W72/50; H10W72/531; H10W72/5363; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
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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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |