Patent US3754161A successfully refreshed from Google Patents.
US3754161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit system
Assignee: OI Glass Inc
•
Filing: 1971-07-14
•
Granted: 1973-08-21
•
Expires: 1991-07-14
Abstract
Abstract Solid state low level to high level interfacing circuits for multiple discharge gas discharge devices capable of feeding through a high level periodic sustaining voltage to the discharge device with minimum degradation. The output is the algebraic sum of the periodic sustaining voltage and a level converted logic signal. NPN circuits are used to drive one set of conductors in an array and PNP circuits are used for driving transversely related conductor arrays in the gas discharge device. Dielectric isolation in the fabrication of the integrated circuits is utilized and the circuits are such as to not require any inductance or capacitance elements, thus reducing cost and size of the circuits. The circuit appears as a low impedance to the load. There is no mixing of active elements (NPN vs PNP) in a circuit wafer or chip. Consult the specification for features and details.
Inventors
- 👤 W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
H; H10; H10D; H10D99/00; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/288; G09G3/296; G09G3/297; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10W; H10W20/00; H10W20/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
218 words
In combination, an integrated circuit system for supplying sustaining voltages and discharge manipulating pulse voltages to one group of row conductors and one group of column conductors in a gas discharge panel in which transversely oriented row and column conductors effecting discharges in the gas have dielectric charge-storage means for charges produced on discharge, said dielectric charge storage means being interposed between said row and column conductors and the gas, said gas being composed of a mixture of neon and argon gases, at least a pair of monolithic semiconductor bodies, each said semiconductor body including a plurality of individual, electrically isolated transistor switching circuits connected by conductors in circuit configurations described hereinafter including a plurality of contact area to which connections to and from said circuit configurations are made, each said circuit configuration being functionally identical, wherein: each circuit configuration translates a low level input pulse signal voltage to a high level pulse signal voltage and feeding through a high level periodic signal voltage as said sustaining voltage, the output voltages from each circuit configuration being of opposite polarity, respectively, each said circuit also including means for causing same to appear as a low impedance during quiescent periods when said circuit is not translating a low level input pulse signal voltage to a high level pulse signal voltage.
Claim 2
Dependent Claim
218 words
In combination, an integrated circuit system for supplying sustaining voltages and discharge manipulating pulse voltages to one group of row conductors and one group of column conductors in a gas discharge panel in which transversely oriented row and column conductors effecting discharges in the gas have dielectric charge-storage means for charges produced on discharge, said dielectric charge storage means being interposed between said row and column conductors and the gas, said gas being composed of a mixture of neon and argon gases, at least a pair of monolithic semiconductor bodies, each said semiconductor body including a plurality of individual, electrically isolated transistor switching circuits connected by conductors in circuit configurations described hereinafter including a plurality of contact area to which connections to and from said circuit configurations are made, each said circuit configuration being functionally identical, wherein: each circuit configuration translates a low level input pulse signal voltage to a high level pulse signal voltage and feeding through a high level periodic signal voltage as said sustaining voltage, the output voltages from each circuit configuration being of opposite polarity, respectively, each said circuit also including means for causing same to appear as a low impedance during quiescent periods when said circuit is not translating a low level input pulse signal voltage to a high level pulse signal voltage.
Claim 3
Dependent Claim
20 words
The invention defined in claim 1 wherein said gas mixture is at a pressure of about 24.62 inches of mercury.
Claim 4
Dependent Claim
25 words
The invention defined in claim 1 wherein said mixture of gases consists essentially of about 99.9 percent neon gas and about 0.1 percent argon gas.
References Cited (Backward Citations)
US1965582A
Cited
US3493812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |