US4977347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color filter and cathode-ray tube using the color filter
Assignee: Toshiba Corp
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Filing: 1989-08-04
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Granted: 1990-12-11
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Expires: 2009-08-04
Abstract
Abstract A color filter comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound. A given dye can be used in the color filter of this invention as the organic compound. Thus, the hue of the color filter is freely selectable. In addition, high light resistance can be attained by sealing the organic compound in the vitreous material in the presence of the metal compound.
Inventors
- 👤 Takeo Itou
- 👤 Hidemi Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/86; H01J29/89; H01J29/898; G; G02; G02B; G02B5/00; G02B5/20; G02B5/22
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
A color filter comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound.
Claim 2
Dependent Claim
39 words
A color filter comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound.
Claim 3
Dependent Claim
21 words
The color filter according to claim 1, wherein said vitreous material is coated on an inorganic substrate by an alcoholate method.
Claim 4
Dependent Claim
18 words
The color filter according to claim 1, wherein said vitreous material contains SiO 2 as a main component.
Claim 5
Dependent Claim
24 words
The color filter according to claim 1, wherein the weight ratio of the added metallic compound to the organic compound is 0.05 to 10.
Claim 6
Dependent Claim
24 words
The color filter according to claim 1, wherein the weight ratio of the added metallic compound to the organic compound is 0.2 to 6.
Claim 7
Dependent Claim
62 words
The color filter according to claim 1, wherein said Ni compound is at least one compound selected from the group consisting of Ni(NO 3 ) 2 .6H 2 O, NiCl 2 .6H 2 O, NiF 2 , NiBr 2 , NiI 2 , NiSO 4 , Ni(CH 3 COO) 2 .4H 2 O, nickelbis(octylphenyl)sulfide, [2,2'-thiobis(4-t-octylphenolate)]-n-butylaminnickel, nickel complex-3, 5-di-t-butyl-4-hydroxybenzylphosphormonoethylate, nickeldibutyldithionacarbamate, and bis(dithiobenzyl)nickel complex.
Claim 8
Dependent Claim
52 words
The color filter according to claim 1, wherein said Co compound is at least one compound selected from the group consisting of CoCl 2 , CoF 2 , CoBR 2 , CoI 2 , CoSO 4 , Co(CH 3 COO) 2 .4H 2 O and Co(NO 3 ) 2 .6H 2 O.
Claim 9
Dependent Claim
70 words
A cathode-ray tube comprising a vacuum envelope having a faceplate, the inner surface of which is provided with a phosphor screen, and a color filter formed on the outer surface of said faceplate and comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound.
Claim 10
Dependent Claim
70 words
A cathode-ray tube comprising a vacuum envelope having a faceplate, the inner surface of which is provided with a phosphor screen, and a color filter formed on the outer surface of said faceplate and comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound.
Claim 11
Dependent Claim
17 words
The cathode-ray tube according to claim 8, wherein said vitreous material is formed by an alcoholate method.
Claim 12
Dependent Claim
18 words
The cathode-ray tube according to claim 8, wherein said vitreous material contains SiO 2 as a main component.
Claim 13
Dependent Claim
18 words
The cathode-ray tube according to claim 8, wherein said vitreous material contains TiO 2 as a main component.
Claim 14
Dependent Claim
18 words
The cathode-ray tube according to claim 8, wherein said vitreous material contains ZrO 2 as a main component.
Claim 15
Dependent Claim
21 words
The cathode-ray tube according to claim 8, wherein said vitreous material contains SiO 2 and TiO 2 as a main component.
Claim 16
Dependent Claim
21 words
The cathode-ray tube according to claim 8, wherein said vitreous material contains SiO 2 and ZrO 2 as a main component.
Claim 17
Dependent Claim
24 words
The cathode-ray tube according to claim 8, wherein the weight ratio of the added metallic compound to the organic compound is 0.005 to 10.
Claim 18
Dependent Claim
24 words
The cathode-ray tube according to claim 8, wherein the weight ratio of the added metallic compound to the organic compound is 0.2 to 6.
Claim 19
Dependent Claim
59 words
The cathode-ray tube according to claim 8, wherein said Ni compound is at least one compound selected from the group consisting of Ni(NO 3 ) 2 .6H 2 O, NiCl 2 .6H 2 O, NiF 2 , NiBr 2 , NiSO 4 , Ni(CH 3 COO) 2 .4H 2 O, nickelbis(octylphenyl)sulfide, [2,2'-thiobis(4-t-octylphenolate)]-n-butylaminnickel, nickel complex-3, 5-di-t-butyl-4-hydroxybenzylphosphormonoethylate, nickeldibutyldithionacarbamate, and bis(dithiobenzyl)nickel complex.
Claim 20
Dependent Claim
52 words
The cathode-ray tube according to claim 8, wherein said Co compound is at least one compound selected from the group consisting of CoCl 2 , CoF 2 , CoBR 2 , CoI 2 , CoSO 4 , Co(CH 3 COO) 2 .4H 2 O, and Co(NO 3 ) 2 .6H 2 O.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |