US3885189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube monoscope with semiconductor target
Assignee: Raytheon Co
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Filing: 1973-12-06
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Granted: 1975-05-20
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Expires: 1993-12-06
Abstract
Abstract A display system having a cathode ray tube signal generator in which a solid state junction target utilizes a layer of semiconductor material and a layer of dielectric material to form a junction. The signal generator may be of the monoscope type in which portions of the target are masked or it may be of the photosensitive type in which an image is projected onto the target. A signal derived from the signal generator is displayed on a second cathode ray tube.
Inventors
- 👤 Amos Picker
- 👤 Wolfgang Feist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:31
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/44; H01J31/00; H01J31/08; H01J31/58; H01J31/585
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
In combination: a cathode ray tube display device; a signal generating device comprising: a source of electrons; a target comprising: a supporting plate; a wafer of semiconductor material having first and second surfaces, said second surface being coupled to said supporting plate; a layer of insulating oxide material disposed upon said first surface of said wafer, said layer having apertures formed therein in predetermined character patterns; a plurality of regions of dielectric material upon said first surface of said semiconductor wafer, said dielectric material having a conduction band close to that of said wafer, said regions of dielectric material being disposed through said apertures in said layer of insulating oxide material; a layer of conductive material covering said dielectric material; means for providing a bias voltage between said regions of dielectric material and said semiconductor wafer; means for directing electrons from said source to said target to produce multiplications of said electrons in said semiconductor layer; and means for feeding Signals from said signal generating device to said display device.
Claim 2
Dependent Claim
170 words
In combination: a cathode ray tube display device; a signal generating device comprising: a source of electrons; a target comprising: a supporting plate; a wafer of semiconductor material having first and second surfaces, said second surface being coupled to said supporting plate; a layer of insulating oxide material disposed upon said first surface of said wafer, said layer having apertures formed therein in predetermined character patterns; a plurality of regions of dielectric material upon said first surface of said semiconductor wafer, said dielectric material having a conduction band close to that of said wafer, said regions of dielectric material being disposed through said apertures in said layer of insulating oxide material; a layer of conductive material covering said dielectric material; means for providing a bias voltage between said regions of dielectric material and said semiconductor wafer; means for directing electrons from said source to said target to produce multiplications of said electrons in said semiconductor layer; and means for feeding Signals from said signal generating device to said display device.
Claim 3
Dependent Claim
189 words
In combination: a cathode ray tube display device; a signal generating device comprising: a source of electrons; a target comprising: a supporting plate; a wafer of semiconductor material having first and second surfaces, said second surface being coupled to said supporting plate; a layer of insulating oxide material disposed upon said first surface of said wafer, said layer having apertures formed therein in predetermined character patterns; a plurality of regions of dielectric material upon said first surface of said semiconductor wafer, said dielectric material having a conduction band close to that of said wafer, said regions of dielectric material being disposed through said apertures in said layer of insulating oxide material; a layer of conductive material covering said dielectric material; means for providing a bias voltage between said regions of dielectric material and said semiconductor wafer; means for directing electrons from said source to a region of said target to produce multiplication of said electrons in said target; means interposed between said source and said region for controlling said electrons in accordance with informational signals; and means for feeding signals from said signal generating device to said display device.
Claim 4
Dependent Claim
189 words
In combination: a cathode ray tube display device; a signal generating device comprising: a source of electrons; a target comprising: a supporting plate; a wafer of semiconductor material having first and second surfaces, said second surface being coupled to said supporting plate; a layer of insulating oxide material disposed upon said first surface of said wafer, said layer having apertures formed therein in predetermined character patterns; a plurality of regions of dielectric material upon said first surface of said semiconductor wafer, said dielectric material having a conduction band close to that of said wafer, said regions of dielectric material being disposed through said apertures in said layer of insulating oxide material; a layer of conductive material covering said dielectric material; means for providing a bias voltage between said regions of dielectric material and said semiconductor wafer; means for directing electrons from said source to a region of said target to produce multiplication of said electrons in said target; means interposed between said source and said region for controlling said electrons in accordance with informational signals; and means for feeding signals from said signal generating device to said display device.
Claim 5
Dependent Claim
16 words
The combination in accordance with claim 2 wherein said cathode ray tube has a fluorescent screen.
Claim 6
Dependent Claim
30 words
The combination in accordance with claim 3 wherein said means for feeding signals to said display device comprise means for intensity modulating the electron beam of said cathode ray tube.
Claim 7
Dependent Claim
26 words
The combination in accordance with claim 4 wherein said intensity modulation is produced by variations in the potential of the cathode of said cathode ray tube.
References Cited (Backward Citations)
US3213675A
Cited
US3440476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |