US6103142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphor and display device
Assignee: Futaba Corp
•
Filing: 1998-03-05
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Granted: 2000-08-15
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Expires: 2018-03-05
Abstract
Abstract A phosphor capable of being reduced in activity of a surface thereof, to thereby minimize adsorption of gas thereon, release of gas therefrom and the like, to thereby ensure protection of the surface. The phosphor of the present invention is coated with a diamond-like carbon (DLC) film. Such coating reduces an activity of a surface of the phosphor. Also, the phosphor may be used for a display section of a display device. This permits durability of the phosphor to be increased and prevents a deterioration of a cathode, resulting in the display device being increased in durability.
Inventors
- 👤 Shigeo Itoh
- 👤 Hitoshi Toki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:18
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; C09K11/08; C09K11/61; C09K11/615; C09K11/77; C09K11/7701; C09K11/7703; C09K11/7766; C09K11/77742; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film is formed of hydrocarbon gas by CVD.
Claim 2
Dependent Claim
20 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film is formed of hydrocarbon gas by CVD.
Claim 3
Dependent Claim
26 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film has a thickness within a range of between 10 Å and 200 Å.
Claim 4
Dependent Claim
26 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film has a thickness within a range of between 10 Å and 200 Å.
Claim 5
Dependent Claim
28 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film formed on a surface of said phosphor is in the form of a laminar shape.
Claim 6
Dependent Claim
28 words
A phosphor coated with a diamond-like carbon film, wherein said diamond-like carbon film formed on a surface of said phosphor is in the form of a laminar shape.
References Cited (Backward Citations)
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Cited
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US4129519A
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-15 | 2004-02-14 | 2004-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-15 | 2008-02-14 | 2008-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-15 | 2012-02-14 | 2012-08-15 | $7700.00 | Window Closed / Lapsed |