Patent US3786294A successfully refreshed from Google Patents.
US3786294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating for diode array targets
Assignee: General Electric Co
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Filing: 1971-02-22
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Granted: 1974-01-15
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Expires: 1991-02-22
Abstract
Abstract An improved coating for diode array targets is disclosed wherein a resistive sea is coated over the diode array. The resistive sea has a thickness of from 10 to 1000A and a resistivity of from 5 X 105 to 109 ohm-centimeters. The resistive sea comprises an electronically conductive borate glass containing an oxide of a metal, e.g. iron, vanadium, cobalt, etc. This layer has been found to serve a protective function and, in particular, serves to prevent an increase in the dark current of the array due to ''''aging'''' effects or due to vacuum baking of the array in preparation for use as an image intensifier.
Inventors
- 👤 R Wilson
- 👤 J Rosczak
- 👤 S Blumenfeld
- 👤 R Redington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:32
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/201; H10D84/204; H10D84/221; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/453; H01J29/455; H10D1/00; H10D1/40; H10D1/47; H10D99/00; H10P; H10P14/00; H10P14/60; H10P95/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
A diode array target as set forth in claim 1 wherein said resistive sea comprises a electrically conductive glass.
Claim 2
Dependent Claim
23 words
A diode array target as set forth in claiM 1 wherein said resistive sea comprises a layer of electrically conductive glass 10-1000A thick.
Claim 3
Dependent Claim
103 words
A diode array target comprising: a semiconductive wafer of a first conductivity type; an insulating layer overlying the surface of said wafer and containing a plurality of apertures; a multitude of regions of second conductivity type intersecting said surface of said semiconductive wafer to form a multitude of junctions therewith, said regions extending through said apertures and overlying portions of said insulating layer; and a layer of electrically conductive glass 10-1000A thick deposited atop said target for dissipating charge stored in said insulating layer, minimizing changes in dark current of the target, and improving the uniformity of response of said diode array target.
Claim 4
Dependent Claim
29 words
A diode array target according to claim 4 wherein said glass is an electronically conducting borate glass having a room temperature resistivity between 5 X 105 and 109 ohm-cm.
Claim 5
Dependent Claim
99 words
A diode array target according to claim 5 wherein said glass contains 20 to 40 mole percent of an alkaline earth metal oxide and an oxide of a metal selected from the group consisting of chromium, iron, antimony, vanadium, titanium, nickel, cobalt, manganese, molybdenum, tungsten, arsenic and mixtures thereof, said oxide of the selected metal being present in the glass in an amount of at least 15 mole percent on the basis of the alkaline metal earth boron content of the glass and providing in the glass metal ions of a higher valence state and a lower valence state.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |