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US3308452A
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High speed electro-optical semiconductor display apparatus
Assignee: International Business Machines Corp
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Filing: 1962-12-24
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Granted: 1967-03-07
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Expires: 1982-12-24
Abstract
No abstract record available.
Inventors
- 👤 Alwin E Michel
- 👤 Edward J Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
H; H10; H10D; H10D99/00; G; G09; G09G; G09G3/00; G09G3/001; G09G3/04; G09G3/045; G09G3/06; G09G3/12; G09G3/14; H10H; H10H20/00; H10H20/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN ELECTRO-OPTICAL DISPLAY DEVICE COMPRISING A BODY OF SEMICONDUCTOR MATERIAL (A) HAVING AT LEAST ONE SUBSTANTIAL PLANAR SURFACE AND (B) HAVING AT LEAST ONE LIGHT EMISSIVE "P-N" JUNCTION THEREIN, SAID JUNCTION BEING SHAPED IN A FORM CAPABLE OF ALPHA-NUMERIC REPRESENTATION AND MEANS FOR VIEWING SAID PLANAR SURFACE IN A DIRECTION SUBSTANTIALLY PERPENDICULAR THERETO TO ENABLE DETECTION OF SHAPED FORMS WHEN THE JUNCTION IS ENERGIZED.
Claim 2
Dependent Claim
64 words
AN ELECTRO-OPTICAL DISPLAY DEVICE COMPRISING A BODY OF SEMICONDUCTOR MATERIAL (A) HAVING AT LEAST ONE SUBSTANTIAL PLANAR SURFACE AND (B) HAVING AT LEAST ONE LIGHT EMISSIVE "P-N" JUNCTION THEREIN, SAID JUNCTION BEING SHAPED IN A FORM CAPABLE OF ALPHA-NUMERIC REPRESENTATION AND MEANS FOR VIEWING SAID PLANAR SURFACE IN A DIRECTION SUBSTANTIALLY PERPENDICULAR THERETO TO ENABLE DETECTION OF SHAPED FORMS WHEN THE JUNCTION IS ENERGIZED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |