US3786295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode substrates for multi-digit type fluorescent display tubes
Assignee: Noritake Itron Corp
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Filing: 1972-10-20
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Granted: 1974-01-15
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Expires: 1992-10-20
Abstract
Abstract The anode substrate for use in a multi-digit type fluorescent tube comprises an insulator substrate printed with conductors for electrically interconnecting corresponding segment electrodes, an insulator substrate overlying the printed conductors and provided with a plurality of perforations above the printed conductors, a plurality of segment electrodes formed on the insulator film at the positions of the perforations, the electrodes including integral connectors extending through the perforations and respectively connected to the printed conductors, phosphor films applied onto respective segment electrodes, the segment electrodes being arranged in a predetermined pattern to display predetermined letters, and a protective film overlying the insulator film and provided with a plurality of the segment electrodes.
Inventors
- 👤 H Fujii
- 👤 T Muroi
- 👤 M Kitamura
- 👤 K Kasano
- 👤 M Matsuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/491
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
An anode substrate for use in a multi-digit type fluorescent display tube comprising an insulator substrate, printed conductors printed on said substrate for electrically interconnecting corresponding segment electrodes, an insulator film overlying said printed conductors, said insulator film being provided with a plurality of perforations above said printed conductors, a plurality of segment electrodes formed on said insulator film at the positions of said perforations, said electrodes including integral connectors extending through said perforations and respectively connected to said printed conductors, Phosphor films applied onto the surfaces of said respective segment electrodes, said segment electrodes being arranged in a predetermined pattern to display predetermined letters, and a protective film overlying said insulator film, said protective film being provided with a plurality of perforations to expose said segment electrodes, said insulator substrate, said insulator film and said protective film being bonded together into an integral structure.
Claim 2
Dependent Claim
145 words
An anode substrate for use in a multi-digit type fluorescent display tube comprising an insulator substrate, printed conductors printed on said substrate for electrically interconnecting corresponding segment electrodes, an insulator film overlying said printed conductors, said insulator film being provided with a plurality of perforations above said printed conductors, a plurality of segment electrodes formed on said insulator film at the positions of said perforations, said electrodes including integral connectors extending through said perforations and respectively connected to said printed conductors, Phosphor films applied onto the surfaces of said respective segment electrodes, said segment electrodes being arranged in a predetermined pattern to display predetermined letters, and a protective film overlying said insulator film, said protective film being provided with a plurality of perforations to expose said segment electrodes, said insulator substrate, said insulator film and said protective film being bonded together into an integral structure.
Claim 3
Dependent Claim
20 words
The anode substrate according to claim 1 wherein said insulator film and said protective film are made of crystal glass.
Claim 4
Dependent Claim
20 words
The anode substrate according to claim 1 wherein said insulator film and said protective film are formed by using masks.
References Cited (Backward Citations)
US3281619A
Cited
US3675065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |