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:
Feb. 12, 2002
Filed:
May. 15, 2001
Noriharu Matsudate, Kujukuri-machi, JP;
Ken Hashimoto, Mobara, JP;
Masahiro Nishizawa, Mobara, JP;
Masaharu Kumada, Mobara, JP;
Satoshi Muto, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A cathode ray tube has a panel portion with a phosphor layer formed on its inner face, a neck portion accommodating an electron gun , a funnel portion for coupling the panel portion to the neck portion and a color selective electrode assembly having a number of electron beam passing openings arranged opposite to the phosphor layer with a space therebetween. The color selective electrode assembly is installed within the panel portion . An electron beam reflection film of a bismuth oxide thin film R having a bulk density of at least 1 g/cm , e.g., from 1 to 9.3 g/cm , is formed on the face of the color selective electrode assembly 6 against which the electron beams emitted from the electron gun collide. The cathode ray tube is capable of displaying high density and high resolution image.