Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – With faceplate of phosphoric stripes
Patent
1986-08-14
1988-10-18
Dees, Jose G.
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
With faceplate of phosphoric stripes
430 24, 430394, 313470, 313525, G03C 500
Patent
active
047787384
ABSTRACT:
A method of producing a luminescent viewing screen using a quadrupole focus mask having apertures substantially larger than the phosphor screen elements is described. The method includes the steps of providing a film of a photosensitive polymeric substance on a faceplate and exposing the film through the focus mask. A first phosphor material is subsequently deposited on the region of the faceplate that was shadowed during the exposure. The process is repeated at different angles of exposure and with different color-emitting phosphor materials until at least two and preferably three different color emitting phosphor materials are deposited to form a cyclic array of screen elements.
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U.S. Pat. Application Ser. No. 751,863 filed on Jul. 5, 1985 by Stanley Bloom et al., titled Cathode-Ray Tube Having a Focusing Color-Selection Structure and Viewing Screen Formed Therefrom.
Christiano Victor
Lipp Steven A.
Coughlin Jr. Vincent J.
Dees Jos,e G.
Irlbeck Dennis H.
RCA Licensing
Whitacre Eugene M.
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