Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device
Reexamination Certificate
2005-11-22
2005-11-22
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Three or more electrode discharge device
C313S486000, C313S487000, C252S30140R
Reexamination Certificate
active
06967440
ABSTRACT:
Panel including a transparent front plate and a rear plate that leave between them discharge spaces, the walls of which are at least partly coated with a layer of a phosphor capable of emitting green, blue or red light; the green phosphor is formed from a mixture of two aluminates having a spinel structure, one A doped with manganese and the other B doped with cerium and with terbium; preferably, the blue phosphor is based on an aluminate of the same structure. The static charges of the various phosphors are homogenized and the risks of phosphor performance degradation during manufacture of the panel are limited.
REFERENCES:
patent: 4096088 (1978-06-01), Ranby et al.
patent: 2002/0041145 (2002-04-01), Yokosawa et al.
Database Inspec, Institute of Electrical Engineers, Stevenage, GB; “A survey of a group of phosphors, based on hexagonal aluminate and gallate host lattices”, Database accession No. 733287 XP002242766, Journal of the Electrochemical Society, Dec. 1974, USA, vol. 121, No. 12, pp. 1623-1627.
Patent Abstracts of Japan, vol. 005, No. 156, Oct. 6, 1981 & JP 56 086983 A. Jul. 15, 1981.
Patent Abstracts of Japan, vol. 017, No. 420, Aug. 5, 1993 & JP 05 086366 A, Apr. 6, 1993.
Racine Benoit
Raverdy Yvan
Fried Harvey D.
Guharay Karabi
Hoges Matt
Thomson Licensing
Tripoli Joseph S.
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