Color cathode ray tube having fluorescent substance particles wi

Details Color cathode ray tube having fluorescent substance particles wi Color cathode ray tube having fluorescent substance particles wi

1998-04-27

2000-07-25

Day, Michael H.

Electric lamp and discharge devices

Cathode ray tube

Screen

313473, 313474, H01J 2920

Patent

active

060940050

ABSTRACT:
A color cathode ray tube includes black matrix films (31) formed on an inner surface of a glass panel (29) with a predetermined positional relation. The black matrix films (31) have a plurality of light transmission window portions (33, 35, 37), and fluorescent substance films (55) formed by fluorescent substance particles (39, 41, 43) of green, blue, and red at the light transmission portions. In the color cathode ray tube, the fluorescent substance films have wave length selective layers (45, 47) partly coated on a surface of at least one kind of the fluorescent substance particles of green, blue, and red. Each of the fluorescent substance films has a wave length selective characteristic.

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Takeshi, T., "Pigment-coated phosphor," Patent Abstracts of Japan, Jun. 19, 1991. JPN 03-143987.
Carl, K., et al., "On the limits of the filter concept for color TV screens," Journal of Electrochemical Soc., vol. 128, No. 11, Nov., 1981, pp. 2395-2401.
Ohno, K., et al., "P-42: a high-picture-quality large-area color display improved by the application of ultrafine-pigment color filters," SID 94 Digest, Jun. 14, 1994, pp. 584-587.
Fukuda, K. & Ito, T., "The Secret of the Micro Filter Tube: Technology to Improve Brightness and Contrast ", Nov., 1995.

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