Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2005-05-03
2005-05-03
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S478000, C313S582000, C313S112000, C359S614000, C359S885000
Reexamination Certificate
active
06888301
ABSTRACT:
A gas-discharge display apparatus is provided that reduces influence of light emission of the discharging gas so as to enhance a color reproducible range and make color purity of red color close to the ideal value. The apparatus uses a gas containing at least one of neon and helium for generating the gas discharge and exciting three kinds of fluorescent materials having different light colors to emit light for color image display. In front of the gas discharge space, an optical filter is disposed, whose transmittance at the wavelength of 585 nanometers is smaller than both the transmittance at the wavelength of 450 nanometers and the transmittance at the wavelength of 620 nanometers.
REFERENCES:
patent: 4521524 (1985-06-01), Yamashita
patent: 4987338 (1991-01-01), Itou et al.
patent: 5121030 (1992-06-01), Schott
patent: 5178955 (1993-01-01), Aharoni et al.
patent: 5218268 (1993-06-01), Matsuda et al.
patent: 5652476 (1997-07-01), Matsuda et al.
patent: 5838106 (1998-11-01), Funada
patent: 5892492 (1999-04-01), Osawa et al.
patent: 5939826 (1999-08-01), Ohsawa et al.
patent: 6157504 (2000-12-01), Yamada et al.
patent: 0 966 017 (1999-12-01), None
patent: 05205643 (1993-08-01), None
patent: 09-022657 (1997-01-01), None
patent: 09306366 (1997-11-01), None
patent: 11-233033 (1999-08-01), None
patent: WO9823980 (1998-06-01), None
patent: WO9926269 (1999-05-01), None
Patent Abstracts of Japan of JP 06255672 dated Oct. 20, 1994.
Irie Katsuya
Namiki Fumihiro
Fijitsu Limited
Patel Nimeshkumar D.
Roy Sikha
Staas & Halsey , LLP
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