The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 1988
Filed:
Aug. 14, 1986
Steven A Lipp, Hopewell, NJ (US);
Victor Christiano, Hamilton, NJ (US);
RCA Licensing, Princeton, NJ (US);
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.