Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – Using specific control or specific modification of exposure,...
Patent
1983-09-12
1985-03-19
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
Using specific control or specific modification of exposure,...
430 23, 430 28, 430326, 430328, 430330, 430540, G03C 500
Patent
active
045059993
ABSTRACT:
Phosphor characters to supply feedback information for an automatic convergence system are applied to the gun side of the shadow mask of a color cathode ray tube by a method of applying layers of a positive-working photoresist and phosphor, exposing the layers through a positive photomask, back exposing to clear the shadow mask apertures, developing to remove the exposed areas, and baking to remove the photoresist.
REFERENCES:
patent: 3224895 (1965-12-01), Rebel
patent: 3226246 (1965-12-01), Vermeulen et al.
patent: 3620735 (1971-11-01), Ulano
patent: 3804621 (1974-04-01), McIntosh
patent: 4049452 (1977-09-01), Nekut
patent: 4154613 (1979-05-01), Doering
patent: 4248947 (1981-02-01), Oikawa
patent: 4339528 (1982-07-01), Goldman
Bergamo Robert L.
Foreman Gordon T.
Gallaro Anthony V.
Nagel Judy A.
Bowers Jr. Charles L.
Briody Thomas A.
Fox John C.
North American Philips Consumer Electronics Corp.
Oisher Jack
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