US3872352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode discharge display apparatus
Assignee: Oki Electric Industry Co Ltd
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Filing: 1973-05-18
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Granted: 1975-03-18
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Expires: 1993-05-18
Abstract
Abstract A cold cathode discharge display apparatus in which a main electrode whose anode consists of a plurality of electrodes while whose cathode is of a plate having a plurality of perforations for discharge space, and a trigger electrode are provided the trigger electrode consisting of a first electrode group for column and a second electrode group for raw, whereby in the display or write operation, a voltage lower than firing voltage but higher than a voltage for sustaining a discharge is applied between the main electrodes and at the same time a drive voltage is applied between the trigger electrodes while in the read-out operation, a voltage lower than firing voltage but higher than the voltage for sustaining the discharge is applied between the trigger electrodes.
Inventors
- 👤 Rentaro Sasaki
- 👤 Akinori Watanabe
- 👤 Tatsuo Ogasawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:33
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; G; G09; G09F; G09F13/00; G09F13/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A cold cathode discharge display apparatus: a plurality of first electrodes; second electrode having a plurality of perforations, each of which is arranged so as to substantially confront each of said first electrodes; a plurality of third electrodes which are arranged in parallel with each other and are oriented in the first direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said second electrodes; and a plurality of fourth electrodes which are arranged in parallel with each other and are oriented in the second direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said third electrodes; whereby when the voltage lower than firing voltage but higher than voltage for sustaining the discharge, is applied between said first and said second electrodes and at the same time said third and said fourth electrodes which are properly selected, are energized by an electrical signal, a proper pattern is formed in display.
Claim 2
Dependent Claim
167 words
A cold cathode discharge display apparatus: a plurality of first electrodes; second electrode having a plurality of perforations, each of which is arranged so as to substantially confront each of said first electrodes; a plurality of third electrodes which are arranged in parallel with each other and are oriented in the first direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said second electrodes; and a plurality of fourth electrodes which are arranged in parallel with each other and are oriented in the second direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said third electrodes; whereby when the voltage lower than firing voltage but higher than voltage for sustaining the discharge, is applied between said first and said second electrodes and at the same time said third and said fourth electrodes which are properly selected, are energized by an electrical signal, a proper pattern is formed in display.
Claim 3
Dependent Claim
20 words
A cold cathode display apparatus as claimed in claim 1, in which said second electrode is formed of a plate.
Claim 4
Dependent Claim
37 words
A cold cathode display apparatus as claimed in claim 1, in which one of said perforations of the said first, second, third and one of first electrodes which are arranged in common axis form a discharge space.
Claim 5
Dependent Claim
37 words
A cold cathode display apparatus as claimed in claim 1, in which one of said perforations of the said first, second, third and one of first electrodes which are arranged in common axis, form a discharge space.
Claim 6
Dependent Claim
216 words
A cold cathode discharge display apparatus; a plurality of first electrodes; second electrode having a plurality of perforations, each of which is arranged so as to substantially confront each of said first electrodes; a plurality of third electrodes which are arranged in parallel to each other and are oriented in a first direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said second electrodes; a plurality of fourth electrodes which are arranged in parallel to each other and are oriented in a second direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said third electrodes; and a voltage detecting means to detect the voltage change between said third electrodes and said fourth electrodes; whereby when the voltage lower than firing voltage but higher than voltage for sustaining the discharge, is applied between said first and said second electrodes and at the same time said third and said fourth electrodes which are properly selected, are energized by an electrical signal, a proper pattern is formed in display while when the voltage lower than firing voltage but higher than the discharge sustaining voltage is applied between said third electrodes and said fourth electrodes, a pattern in display may be detected.
Claim 7
Dependent Claim
216 words
A cold cathode discharge display apparatus; a plurality of first electrodes; second electrode having a plurality of perforations, each of which is arranged so as to substantially confront each of said first electrodes; a plurality of third electrodes which are arranged in parallel to each other and are oriented in a first direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said second electrodes; a plurality of fourth electrodes which are arranged in parallel to each other and are oriented in a second direction, each of those electrodes having a plurality of perforations substantially aligned with the corresponding said perforations of said third electrodes; and a voltage detecting means to detect the voltage change between said third electrodes and said fourth electrodes; whereby when the voltage lower than firing voltage but higher than voltage for sustaining the discharge, is applied between said first and said second electrodes and at the same time said third and said fourth electrodes which are properly selected, are energized by an electrical signal, a proper pattern is formed in display while when the voltage lower than firing voltage but higher than the discharge sustaining voltage is applied between said third electrodes and said fourth electrodes, a pattern in display may be detected.
Claim 8
Dependent Claim
20 words
A cold cathode display apparatus as claimed in claim 5, in which said second electrode is formed of a plate.
References Cited (Backward Citations)
US3340419A
Cited
US3408532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |