US4278918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel driver circuit
Assignee: Modern Controls Inc
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Filing: 1980-03-31
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Granted: 1981-07-14
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Expires: 2000-03-31
Abstract
Abstract Low impedance gas display panel voltage driver circuit is disclosed for driving conductor segments imbedded in gas display panel, wherein such conductor segments present a capacitive load, and where input to driving circuit is digital logic signal from standard transistor-transistor logic (TTL) circuit, the driver circuit and variations thereof being suitable for coupling to one or a plurality of conductor segments in a gas display panel.
Inventors
- 👤 Kenneth W. Bachofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:27
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A circuit for voltage driving a plurality of capacitive conductor segments in a gas display panel, comprising: (a) a first complementary transistor pair connected at an intermediate series junction point in series coupled arrangement between a voltage source and a ground return terminal, said pair having a common connection to their respective control elements; (b) a second complementary transistor pair connected in series coupled arrangement between a voltage source and a ground return terminal, said pair having their respective common junction point connected to said common connection of said first pair's control elements; (c) a pair of input terminals, each terminal respectively connected to a control element of one of said second complementary transistor pair; and (d) an output terminal connected to the intermediate series junction point of said first complementary transistor pair.
Claim 2
Dependent Claim
133 words
A circuit for voltage driving a plurality of capacitive conductor segments in a gas display panel, comprising: (a) a first complementary transistor pair connected at an intermediate series junction point in series coupled arrangement between a voltage source and a ground return terminal, said pair having a common connection to their respective control elements; (b) a second complementary transistor pair connected in series coupled arrangement between a voltage source and a ground return terminal, said pair having their respective common junction point connected to said common connection of said first pair's control elements; (c) a pair of input terminals, each terminal respectively connected to a control element of one of said second complementary transistor pair; and (d) an output terminal connected to the intermediate series junction point of said first complementary transistor pair.
Claim 3
Dependent Claim
16 words
The circuit of claim 1, wherein said voltage source is in the range of 150-300 volts.
Claim 4
Dependent Claim
19 words
The circuit of claim 2, further comprising a plurality of capacitively loaded conductor segments connected to said output terminal.
Claim 5
Dependent Claim
18 words
The circuit of claim 1, further comprising a coupling capacitor respectively connected to each of said input terminals.
Claim 6
Dependent Claim
17 words
The circuit of claim 1, further comprising one or more conductor segments connected to said output terminal.
Claim 7
Dependent Claim
165 words
A circuit for voltage driving a plurality of capacitive conductor segments in a gas display panel, comprising: (a) a first complementary transistor pair connected at an intermediate series junction point in series coupled arrangement between a voltage source in the range of 150-300 volts DC., and a ground return terminal, said pair having a common connection to their respective control elements; (b) a second complementary transistor pair connected in series coupled arrangement between said voltage source and a ground return terminal, said pair having their respective common junction point connected to said common connection of said first pair's control elements; (c) a pair of input terminals, each terminal respectively connected to a control element of one of said second complementary transistor pair through a coupling capacitor; (d) an output terminal connected to the intermediate series junction point of said first complementary transistor pair; and (e) a decoupling capacitor connected between a ground return terminal and said voltage source connection to said second complementary transistor pair.
Claim 8
Dependent Claim
165 words
A circuit for voltage driving a plurality of capacitive conductor segments in a gas display panel, comprising: (a) a first complementary transistor pair connected at an intermediate series junction point in series coupled arrangement between a voltage source in the range of 150-300 volts DC., and a ground return terminal, said pair having a common connection to their respective control elements; (b) a second complementary transistor pair connected in series coupled arrangement between said voltage source and a ground return terminal, said pair having their respective common junction point connected to said common connection of said first pair's control elements; (c) a pair of input terminals, each terminal respectively connected to a control element of one of said second complementary transistor pair through a coupling capacitor; (d) an output terminal connected to the intermediate series junction point of said first complementary transistor pair; and (e) a decoupling capacitor connected between a ground return terminal and said voltage source connection to said second complementary transistor pair.
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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |