US3687745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive storage device including diode array and method for producing the array
Assignee: AT&T Inc
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Filing: 1971-03-15
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Granted: 1972-08-29
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Expires: 1991-03-15
Abstract
Abstract A LIGHT-SENSITIVE TARGET STRUCTURE FOR USE IN AN IMAGING DEVICE COMPRISES A SEMICONDUCTING WAFER HAVING A HIGH DENSITY ARRAY OF JUNCTION DIODES IN ONE SURFACE OF THE WATER. THE DIODE ARRAY IS PRODUCED BY: (1) FORMING ISLANDS OF GALLIUM, INDIUM, THALLIUM, LEAD OR TIN; (2) EITHER DIFFUSING ATOMS OF GALLIUM, INDIUM OR THALLIUM DIRECTLY INTO THE WATER OR SELECTIVELY DIFFUSING AN IMPURITY SUCH AS BORON THROUGH MOLTEN ISLANDS OF LEAD OR TIN; (3) FORMING AN OXIDE LAYER OVER THE ENTIRE ISLAND-BEARING SURFACE; AND (4) SELECTIVELY REMOVING PORTIONS OF THE OXIDE LAYER OVER THE METAL ISLANDS, TO EXPOSE THE ISLANDS.
Inventors
- 👤 Chuan Chung Chang
- 👤 Robert Boris Marcus
- 👤 Richard Siegfried Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/453; H01J9/00; H01J9/20; H01J9/233; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |