Color cathode ray tube and fabrication method of fluorescent sur

Details Color cathode ray tube and fabrication method of fluorescent sur Color cathode ray tube and fabrication method of fluorescent sur

1998-02-27

2000-08-08

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Screen

313473, H01J 2910

Patent

active

061006327

ABSTRACT:
A color cathode ray tube is disclosed, that comprises an optical filter layer 2 formed on an inner surface of a glass panel 1, a thin film formed on a front surface of the optical filter layer 2 and composed of a metal oxide, and a fluorescent substance layer 4 formed on the thin film 3 corresponding to a pattern of the optical filter layer 2. The surface state of the thin film 3 is rougher than the surface state of the optical filter layer 2 and similar to the surface state of the fluorescent substance layer 4. Thus, the optical filter layer 2 sparsely contacts the fluorescent substance layer 4. Thus, the influence of the optical filter layer 2 to the fluorescent substance layer 4 can be reduced. Consequently, fluorescent substance particles of the fluorescent substance layer 4 can be suppressed from breaking, dropping, and so forth. Thus, an excellent fluorescent surface can be obtained at high throughput.

REFERENCES:
patent: 4757231 (1988-07-01), Kato et al.

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