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:
Dec. 27, 2005
Filed:
Mar. 14, 2002
Naoki Yamauchi, Osaka, JP;
Hideo Iguchi, Osaka, JP;
Hideharu Omae, Osaka, JP;
Yoshimi Kumei, Osaka, JP;
Tetsuro Ozawa, Osaka, JP;
Yoko Kannan, Osaka, JP;
Naoki Yamauchi, Osaka, JP;
Hideo Iguchi, Osaka, JP;
Hideharu Omae, Osaka, JP;
Yoshimi Kumei, Osaka, JP;
Tetsuro Ozawa, Osaka, JP;
Yoko Kannan, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a cathode ray tube including a panel provided with a phosphor screen, a funnel integrated with the panel, an electron gun disposed inside the funnel, a magnetic shield () for shielding an electron beam () emitted from the electron gun against an external magnetic field, and a frame () for holding the magnetic shield (), the magnetic shield () includes, at a portion to be joined with the frame (), a bent portion () bent toward a tube axis side, and a thickness T of the bent portion () at its edge on the tube axis side is 0.08 mm or less. By making the thickness T small, halation that is liable to occur in a cathode ray tube with a large deflection angle can be suppressed because electron beams reflected from an end face () and allowed to reach the screen without being shielded by the frame () are reduced.