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:
Jun. 30, 1981
Filed:
Oct. 19, 1979
Toshikatsu Manabe, Ome, JP;
Saburo Nonogaki, Tokyo, JP;
Hajime Morishita, Tokyo, JP;
Shoichi Uchino, Hachioji, JP;
Yoshifumi Tomita, Mobara, JP;
Masahiro Nishizawa, Mobara, JP;
Hiroshi Yokomizo, Mobara, JP;
Susumu Ohmatoi, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Kasei Optonix, Ltd., Tokyo, JP;
Abstract
A process for forming a phosphor screen of a color picture tube comprising forming a thin layer using a photosensitive composition which contains an aromatic diazonium salt as a photosensitive component and produces tackiness by exposure to actinic light on the surface of the substrate and contacting the tackified thin layer after exposure to light with phosphor particles to form each phosphor layer for emitting color is improved by using as the phosphor particles those coated with at least one surface coating material selected from the group consisting of Zn(OH).sub.2, Zn.sub.3 (PO.sub.4).sub.2 and AlPO.sub.4 in shortening the contact time between the thin layer and the phosphor particles.