US3899707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode discharge type display device
Assignee: Oki Electric Industry Co Ltd
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Filing: 1973-10-26
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Granted: 1975-08-12
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Expires: 1993-10-26
Abstract
Abstract In a cold cathode discharge type display device wherein a cathode substrate, a starting electrode substrate and an anode substrate are laminated between upper and lower insulative substrates, the cathode substrate, the starting electrode substrate and the anode substrate are provided with aligned perforations acting as discharge cells, there is provided a deionization gap contiguous with the discharge cells.
Inventors
- 👤 Rentaro Sasaki
- 👤 Akinori Watanabe
- 👤 Mamoru Ikegame
- 👤 Tatsuo Ogasawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:59
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; G; G09; G09F; G09F13/00; G09F13/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
102 words
In a cold cathode discharge type display device of the type wherein a cathode substrate, a starting electrode substrate and an anode substrate are laminated between upper and lower insulaTive substrates with said starting electrode substrate between said cathode and anode substrates, said cathode substrate, starting electrode substrate and anode substrate are provided with a plurality of sets of aligned perforations which are arranged in a plurality of matrixes, and said perforations act as discharge cells, the improvement which comprises spacing means for one of said insulative substrates for forming a deionization gap area over said matrixes contiguous with said discharge cells.
Claim 2
Dependent Claim
102 words
In a cold cathode discharge type display device of the type wherein a cathode substrate, a starting electrode substrate and an anode substrate are laminated between upper and lower insulaTive substrates with said starting electrode substrate between said cathode and anode substrates, said cathode substrate, starting electrode substrate and anode substrate are provided with a plurality of sets of aligned perforations which are arranged in a plurality of matrixes, and said perforations act as discharge cells, the improvement which comprises spacing means for one of said insulative substrates for forming a deionization gap area over said matrixes contiguous with said discharge cells.
Claim 3
Dependent Claim
29 words
The display device according to claim 1 wherein said upper insulative substrate is transparent and said deionization gap is provided between said upper insulative substrate and said cathode substrate.
References Cited (Backward Citations)
US3600626A
Cited
US3766420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |