US3891883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge display panel including a substrate supporting plural cathodes and recessed anodes
Assignee: TE Connectivity Corp
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Filing: 1974-05-09
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Granted: 1975-06-24
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Expires: 1994-05-09
Abstract
Abstract In a glow discharge readout, cathodes are arranged on a glass substrate in electrical isolation from a plurality of anodes also on the substrate. Contact pins sealably imbedded in the substrate contact respective anodes and cathodes. A transparent cover forms a sealed envelope encasing the anodes and cathodes within an illuminating gas atmosphere. The anodes are purposely recessed with respect to the cathodes, whereupon an electrical potential impressed between the anodes and selected cathodes will cause electrons to flow from the cathodes to the anodes, the electron stream being focused toward the surface of the glass substrate and away from the transparent envelope thereby preventing electron collision with the transparent envelope. According to the method of the present invention, cathodes are formed from particulate metal particles sintered under pressure and at a temperature below the melting point of the metal particles, but at a temperature sufficient to cause fusion of the substrate material. Upon fusion of the substrate in an inert atmosphere, the anodes, cathodes and contact pins are fused to the substrate simultaneously in a single operation. Applying molding pressure during fusion of the substrate will desirably recess the anodes from the cathodes.
Inventors
- 👤 Abbas Mesbahuddin Ahmed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:54
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/491
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A glow discharge readout device, comprising: a fusible ceramic substrate, portions of the substrate forming elevated platforms, the platforms receiving cathodes therein arranged in a desired pattern, contact pins imbedded in said substrate and in contact with corresponding cathodes, anodes affixed to the substrate and generally recessed with respect to said cathodes, additional contact pins imbedded in said substrate and in contact with corresponding anodes, said anodes and cathodes being encapsulated in a transparent sealed envelope filled with an illuminating gas, and upon impressing an electrical potential between said anodes and selected cathodes, electrons will be caused to flow from said selected cathodes in a direction focused toward said relatively recessed anodes and toward the surface of the substrate and away from said transparent sealed envelope, thereby preventing discoloration of said transparent envelope by electron collision therewith, portions of said anodes being encircled by selected cathodes, said encircled portions of said anodes being interconnected by bridging anode portions imbedded in and extending beneath said elevated platforms on which said selected cathodes are located.
Claim 2
Dependent Claim
173 words
A glow discharge readout device, comprising: a fusible ceramic substrate, portions of the substrate forming elevated platforms, the platforms receiving cathodes therein arranged in a desired pattern, contact pins imbedded in said substrate and in contact with corresponding cathodes, anodes affixed to the substrate and generally recessed with respect to said cathodes, additional contact pins imbedded in said substrate and in contact with corresponding anodes, said anodes and cathodes being encapsulated in a transparent sealed envelope filled with an illuminating gas, and upon impressing an electrical potential between said anodes and selected cathodes, electrons will be caused to flow from said selected cathodes in a direction focused toward said relatively recessed anodes and toward the surface of the substrate and away from said transparent sealed envelope, thereby preventing discoloration of said transparent envelope by electron collision therewith, portions of said anodes being encircled by selected cathodes, said encircled portions of said anodes being interconnected by bridging anode portions imbedded in and extending beneath said elevated platforms on which said selected cathodes are located.
Claim 3
Dependent Claim
37 words
The structure as recited in claim 1, wherein, said cathodes are formed from metal particles, said substrate being fusible, said metal particles being affixed by fusion to said elevated platforms with said substrate in a molten state.
Claim 4
Dependent Claim
97 words
The structure as recited in claim 2, wherein, said particulate metal particles are sintered under pressure and at a temperature below the melting point of said metal particles but a temperature sufficient to reduce said substrate to a molten state, whereby said metal particles are formed under pressure to a cohesive mass of individual particles partially diffused into said substrate in a molten state, said cohesive mass being of roughened irregular surface formed by said individual particles in order to provide an electron multiplier enhancing electron collisions with said irregular surface, thereby producing a desired discharge phenomenon.
Claim 5
Dependent Claim
174 words
A glow discharge readout device, comprising: a fusible ceramic substrate, portions of the substrate forming elevated platforms, the platforms receiving cathodes therein arranged in a desired pattern, contact pins imbedded in said substrate and in contact with corresponding cathodes, anodes affixed to the substrate and generally recessed with respect to said cathodes, additional contacts imbedded in said substrate and in contact with corresponding anodes, said anodes and cathodes being encapsulated in a transparent sealed envelope provided with a illuminating gas, and upon impressing an electrical potential between said anodes and selected cathodes, electrons will be caused to flow from said selected cathodes in a direction focused toward said relatively recessed anodes and toward the surface of the substrate and away from said transparent sealed envelope, thereby preventing discoloration of said transparent envelope by electron collision therewith, said illuminating gas comprising a Neon-Argon gas mixture together with a quantity of Krypton 85 radio-active gas, said anodes and cathodes are spaced 0.01 inches apart, and wherein the internal pressure of the envelope is greater than atmospheric.
Claim 6
Dependent Claim
174 words
A glow discharge readout device, comprising: a fusible ceramic substrate, portions of the substrate forming elevated platforms, the platforms receiving cathodes therein arranged in a desired pattern, contact pins imbedded in said substrate and in contact with corresponding cathodes, anodes affixed to the substrate and generally recessed with respect to said cathodes, additional contacts imbedded in said substrate and in contact with corresponding anodes, said anodes and cathodes being encapsulated in a transparent sealed envelope provided with a illuminating gas, and upon impressing an electrical potential between said anodes and selected cathodes, electrons will be caused to flow from said selected cathodes in a direction focused toward said relatively recessed anodes and toward the surface of the substrate and away from said transparent sealed envelope, thereby preventing discoloration of said transparent envelope by electron collision therewith, said illuminating gas comprising a Neon-Argon gas mixture together with a quantity of Krypton 85 radio-active gas, said anodes and cathodes are spaced 0.01 inches apart, and wherein the internal pressure of the envelope is greater than atmospheric.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |