US3624399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device for detecting radiation
Assignee: US Philips Corp
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Filing: 1968-10-16
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Granted: 1971-11-30
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Expires: 1988-10-16
Abstract
Abstract A radiation detector is described comprising a semiconductor disc having crossed strip electrodes on opposite sides with the output taken from the strips of one of the electrodes. To reduce crosstalk, a small voltage is applied between the strips in addition to the usual back-biasing voltage across the electrodes.
Inventors
- 👤 Jacob Anne Den Boer
- 👤 Johan Hendrik Dieperink
- 👤 Karel MULDER
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:37
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/18; H10F39/186; G; G01; G01T; G01T1/00; G01T1/29; G01T1/2914; G01T1/2921; G01T1/2928; H10F99/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
Radiation detection apparatus comprising a semiconductor device; said device comprising a single crystal disc of semiconductor material having opposed major surfaces, means forming a rectifying electrode on one major surface, and means forming an electrode on the opposite major surface, at least one of said electrodes comprising a plurality of mutually insulated, strip-shaped electrode portions; means for applying across the electrodes a voltage biasing the rectifying electrode in the reverse direction, output means coupled to the strip-shaped electrode portions, and means for applying at least between two adjacent strip-shaped electrode portions of said one electrode an ancillary voltage which is small relative to the reverse biasing voltage to suppress crosstalk in the output.
Claim 2
Dependent Claim
113 words
Radiation detection apparatus comprising a semiconductor device; said device comprising a single crystal disc of semiconductor material having opposed major surfaces, means forming a rectifying electrode on one major surface, and means forming an electrode on the opposite major surface, at least one of said electrodes comprising a plurality of mutually insulated, strip-shaped electrode portions; means for applying across the electrodes a voltage biasing the rectifying electrode in the reverse direction, output means coupled to the strip-shaped electrode portions, and means for applying at least between two adjacent strip-shaped electrode portions of said one electrode an ancillary voltage which is small relative to the reverse biasing voltage to suppress crosstalk in the output.
Claim 3
Dependent Claim
40 words
Radiation detection apparatus as set forth in claim 1 wherein the disc is of silicon of N-type conductivity and said one electrode is the rectifying electrode and is of the Schottky type and the other electrode is an ohmic electrode.
Claim 4
Dependent Claim
80 words
Radiation detection apparatus as set forth in claim 1 wherein the other electrode forms an ohmic electrode, each of said electrodes comprise a plurality of mutually insulated, parallel, strip-shaped electrode portions, the strip-shaped electrode portions of one electrode crossing over the strip-shaped electrode portions of the other electrode, and means are provided for applying across the ohmic and rectifying electrode portions a voltage at which the resultant dePletion layer within the disc occupies approximately the whole space between the electrodes.
Claim 5
Dependent Claim
32 words
Radiation detection apparatus as set forth in claim 1 wherein the rectifying electrode is strip shaped, and the output means is connected to each of substantially all of the strip-shaped electrode portions.
Claim 6
Dependent Claim
26 words
Radiation detection apparatus as set forth in claim 4 wherein the maximum potential difference between two strips of the strip-shaped electrode portions is the ancillary voltage.
Claim 7
Dependent Claim
58 words
Radiation detection apparatus as set forth in claim 4 and including means connecting the electrode strips on one side of the disc in groups of two to produce an output signal corresponding only to the voltage difference occurring between the strip pair of a group upon the incidence of radiation, the ancillary voltage being applied between different groups.
Claim 8
Dependent Claim
30 words
Radiation detection apparatus as set forth in claim 1 wherein the biasing voltage is a DC voltage and the ancillary voltage is an AC voltage of constant frequency and amplitude.
Claim 9
Dependent Claim
27 words
Radiation detection apparatus as set forth in claim 1 wherein the biasing voltage is a high DC voltage, and the ancillary voltage is a low DC voltage.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |