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:
Aug. 06, 1985
Filed:
Jun. 21, 1984
Attilio Di Passio, Sora, IT;
Antimo Pezzulo, Miravalle, IT;
Videocolor, Montrouge, FR;
Abstract
In order to deposit an antireflection layer between the phosphor strips of the screen of a color television tube and on the face-plate flange, a photosensitive substance is applied on the internal face of the face-plate and is then exposed to radiation-hardening at the phosphor-strip locations, whereupon the non-hardened portions are removed. The flange and face-plate are then coated with the antireflection layer, H.sub.2 O.sub.2 is deposited in order to destroy the hardened strips which are finally removed together with their antireflection coating. Deionized water, for ensuring that the film of hardened photosensitive material which has formed on the flange is made uniform, is spray-deposited on the flange prior to deposition of photosensitive substance. After deposition of the antireflection layer, deionized water is also sprayed onto this layer prior to application of the oxygenated water. The destructive activity of the oxygenated water on the film is thus reduced.