US4079370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of driving a flat discharge panel
Assignee: Hitachi Ltd
•
Filing: 1976-09-22
•
Granted: 1978-03-14
•
Expires: 1996-09-22
Abstract
Abstract In a flat discharge panel having a cathode adapted to perform a discharge in cooperation with an anode through a main discharge space, being applied with a discharge voltage, and adapted to perform another discharge in cooperation with an auxiliary anode through an auxiliary discharge space, being applied with an auxiliary discharge voltage, said cathode being connected in series to a resistor, a method of driving the flat discharge panel characterized in that a memory function or characteristics is imparted to a matrix panel consisting of the flat discharge panel by shifting the discharge from the auxiliary discharge space to the main discharge space through raising the voltage applied to the main discharge space while lowering the voltage applied to the auxiliary discharge space, and by shifting the discharge from the main discharge space to the auxiliary discharge space by raising the voltage applied to the auxiliary discharge space while lowering the voltage applied to the main discharge space.
Inventors
- 👤 Shigeo Mikoshiba
- 👤 Shinichi Shindada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:18
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/282; G09G3/04; G09G3/06; G09G3/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
183 words
A method of driving a flat discharge display panel of the type having a plurality of gas discharge cells arrived in a matrix form, each of said cells comprising a main anode electrode, an auxiliary anode electrode and a cathode electrode interposed between said main anode electrode and said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge spacing being provided between said auxiliary anode electrode and said cathode electrode, said main and auxiliary discharge spaces being in communication with each other, and a gas contained in said main and auxiliary discharge spaces, said method comprising the steps of: (a) applying a first D.C. voltage between said auxiliary anode electrode and said cathode electrode and a second D.C. voltage between said main anode electrode and said cathode electrode; and (b) increasing one of said first and second D.C. voltages while decreasing the other to switch between a main discharge being generated in said main discharge space with internal memory function and an auxiliary discharge being generated in said auxiliary discharge space.
Claim 2
Independent Claim
183 words
A method of driving a flat discharge display panel of the type having a plurality of gas discharge cells arrived in a matrix form, each of said cells comprising a main anode electrode, an auxiliary anode electrode and a cathode electrode interposed between said main anode electrode and said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge spacing being provided between said auxiliary anode electrode and said cathode electrode, said main and auxiliary discharge spaces being in communication with each other, and a gas contained in said main and auxiliary discharge spaces, said method comprising the steps of: (a) applying a first D.C. voltage between said auxiliary anode electrode and said cathode electrode and a second D.C. voltage between said main anode electrode and said cathode electrode; and (b) increasing one of said first and second D.C. voltages while decreasing the other to switch between a main discharge being generated in said main discharge space with internal memory function and an auxiliary discharge being generated in said auxiliary discharge space.
Claim 3
Independent Claim
295 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than voltage values at which the main discharge is formed between the main anode electrode and the cathode electrode of said selected discharge cell; (b) reducing said first D.C. voltage to half-select said discharge cell, said first D.C. voltage then having a value smaller than the voltage value at which the main discharge is formed between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) increasing said second D.C. voltage to non-select said discharge cell, said second D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than the voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 4
Independent Claim
295 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than voltage values at which the main discharge is formed between the main anode electrode and the cathode electrode of said selected discharge cell; (b) reducing said first D.C. voltage to half-select said discharge cell, said first D.C. voltage then having a value smaller than the voltage value at which the main discharge is formed between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) increasing said second D.C. voltage to non-select said discharge cell, said second D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than the voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 5
Independent Claim
296 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground, said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than the voltage values at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said address discharge cell; (b) reducing said first D.C. voltage to half-select said discharge cell, said first D.C. voltage then having a value smaller than the voltage value at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) increasing said second D.C. voltage to non-select said discharge cell, said second D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than a voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 6
Independent Claim
296 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground, said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than the voltage values at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said address discharge cell; (b) reducing said first D.C. voltage to half-select said discharge cell, said first D.C. voltage then having a value smaller than the voltage value at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) increasing said second D.C. voltage to non-select said discharge cell, said second D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than a voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 7
Independent Claim
294 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; same method comprising the steps of: (a) applying a first D.C. voltage to the main electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than voltage values at which the main discharge is formed between the main anode electrode and the cathode electrode of said selected discharge cell; (b) increasing said second D.C. voltage to half-select said discharge cell, said second D.C. voltage then having a value smaller than the voltage value at which the main discharge is formed between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) decreasing said first D.C. voltage to non-select said discharge cell, said first D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than the voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 8
Independent Claim
294 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; same method comprising the steps of: (a) applying a first D.C. voltage to the main electrode and a second D.C. voltage to the auxiliary anode electrode of a select discharge cell, said first and second D.C. voltages having values larger than voltage values at which the main discharge is formed between the main anode electrode and the cathode electrode of said selected discharge cell; (b) increasing said second D.C. voltage to half-select said discharge cell, said second D.C. voltage then having a value smaller than the voltage value at which the main discharge is formed between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) decreasing said first D.C. voltage to non-select said discharge cell, said first D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than the voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 9
Independent Claim
296 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select dischharge cell, said first and second D.C. voltages having values larger than the voltage values at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said address discharge cell; (b) increasing said second D.C. voltage to half-select said discharge cell, said second D.C. voltage then having a value smaller than the voltage value at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) reducing said first D.C. voltage to non-select said discharge cell, said first D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than a voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
Claim 10
Independent Claim
296 words
A method of driving a flat discharge display panel having a plurality of gas discharge cells arrayed in a matrix form, each of said cells comprising a cathode electrode, an auxiliary anode electrode serving as an X-axis electrode, a main anode electrode serving as a Y-axis electrode disposed on the opposite side of said cathode electrode from said auxiliary anode electrode, a main discharge space being provided between said main anode electrode and said cathode electrode, an auxiliary discharge space being provided between said auxiliary anode electrode and said cathode electrode, and a resistor connected between said cathode electrode and one terminal of a bias source, the other terminal of said bias source being connected to ground; said method comprising the steps of: (a) applying a first D.C. voltage to the main anode electrode and a second D.C. voltage to the auxiliary anode electrode of a select dischharge cell, said first and second D.C. voltages having values larger than the voltage values at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said address discharge cell; (b) increasing said second D.C. voltage to half-select said discharge cell, said second D.C. voltage then having a value smaller than the voltage value at which the main discharge is extinguished between the main anode electrode and the cathode electrode of said half-select discharge cell; and (c) reducing said first D.C. voltage to non-select said discharge cell, said first D.C. voltage then having a value which is lower than the voltage value enabling the discharge between the main anode electrode and the cathode electrode and is higher than a voltage value to disable the discharge between the main anode electrode and the cathode electrode, so that said main discharge maintains a memory function.
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) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |