Method for fabricating a cathode ray tube

Details Method for fabricating a cathode ray tube Method for fabricating a cathode ray tube

1990-11-07

1994-06-28

Rosasco, Steve

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

430 26, 430 29, G03C 500

Patent

active

053246020

ABSTRACT:
A method for fabricating a cathode ray tube is described. The method comprises the steps of selectively forming a resist layer corresponding to a pattern of a fluorescent material on an inner surface of the panel of a cathode ray tube, and applying a slurry of a light-absorbing material on the entire inner surface of the panel including the resist layer to form a light-absorbing layer. An inorganic pigment slurry is applied over the entire inner surface of the panel to form an inorganic pigment layer on the light-absorbing layer and then subjected to reverse development to selectively remove the resist layer along with the light-absorbing layer and the white pigment layer, thereby forming a matrix pattern. Finally, a fluorescent material is applied to individual removed portions of the matrix pattern to form a fluorescent pattern. Monochromatic or color cathode ray tubes are obtained with an improved luminance and a colorimetric purity by a simple procedure.

REFERENCES:
patent: 3614503 (1971-10-01), Dietch
patent: 4243735 (1981-01-01), Kobale et al.
patent: 4407916 (1983-10-01), Akagi et al.

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