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:
Nov. 26, 2002
Filed:
Aug. 23, 2000
Applicant:
Inventors:
Yuichi Inoue, Mobara, JP;
Katsuyoshi Tamura, Mobara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/907 ;
U.S. Cl.
CPC ...
H01J 2/907 ;
Abstract
A Braun tube for use in a TV receiver or the like, in which its screen does not need high resolution, but the brightness of the screen is important. The Braun tube has a panel with a flat outer surface, an electron gun arranged in an in-line manner and a phosphor screen whose phosphors are arranged in a delta pattern, and the horizontal pitch of a shadow mask can be varied in the direction of the Y-axis. The mechanical strength of the shadow mask is improved by making the curvature of the shadow mask larger than the curvature of the inner surface of the panel in the direction of the vertical axis of the screen.