Method of forming a fluorescent screen of a black matrix type co

Details Method of forming a fluorescent screen of a black matrix type co Method of forming a fluorescent screen of a black matrix type co

1981-02-09

1983-01-18

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

With light-absorbing matrix on faceplate

430 28, 430 29, 430299, 430304, 430323, H01J 920, G03C 500

Patent

active

043692419

ABSTRACT:
In forming a fluorescent screen of a black matrix type color picture tube, a light absorptive film is first formed on the inner surface of a face plate of the color picture tube. Formed on the light absorptive film is a light-hardenable photosensitive resin film which in turn is exposed to light through a shadow mask at portions corresponding to phosphor applying portions. The unexposed portion of the light-hardenable photosensitive film is then developed. Finally, the exposed portion of the light-hardenable photosensitive film and portion of the light absorptive film therebeneath are removed to partly perforate the light absorptive film so that in the light absorptive film, openings are formed into which the phosphor is applied.

REFERENCES:
patent: 2533530 (1950-12-01), Staehle
patent: 2564414 (1951-08-01), Whyzmuzis
patent: 3146368 (1964-08-01), Fiore et al.
patent: 3317319 (1967-05-01), Mayaud
patent: 3615460 (1971-10-01), Lange
patent: 3661580 (1972-05-01), Mayaud
patent: 4234669 (1980-11-01), Pearlman
patent: 4292393 (1981-09-01), Wada et al.

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