Method of producing a cathode ray tube

U.S. Patent Number: 6346291

Abstract: A cathode ray tube has a panel portion 1 with a phosphor layer 5 formed on its inner face, a neck portion 2 accommodating an electron gun 9, a funnel portion 2 for coupling the panel portion 1 to the neck portion 2 and a color selective electrode assembly 6 having a number of electron beam passing openings arranged opposite to the phosphor layer 5 with a space therebetween. The color selective electrode assembly is installed within the panel portion 1. An electron beam reflection film of a bismuth oxide thin film 6R having a bulk density of at least 1 g/cm.sup.3, e.g., from 1 to 9.3 g/cm.sup.3, is formed on the face of the color selective electrode assembly 6 against which the electron beams 14 emitted from the electron gun 9 collide. The cathode ray tube is capable of displaying high density and high resolution image.

Inventors: Matsudate; Noriharu (Kujukuri-machi, JP), Hashimoto; Ken (Mobara, JP), Nishizawa; Masahiro (Mobara, JP), Kumada; Masaharu (Mobara, JP), Muto; Satoshi (Mobara, JP)

Assignee: Hitachi, Ltd. (Tokyo, JP)

Application Number: 09/854,570

Issued: 2002-02-12

Expired: 2006-02-12

Classes: 427/64 ; 427/68

Field of search: 427/64,68

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