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. 10, 2008
Filed:
Mar. 01, 2005
Koji Nishiyama, Ibaraki, JP;
Hiroji Morimoto, Kashihara, JP;
Akira Satou, Ibaraki, JP;
Katsuyo Iwasaki, Nishinomiya, JP;
Kenichiro Taniwa, Takatsuki, JP;
Koji Nishiyama, Ibaraki, JP;
Hiroji Morimoto, Kashihara, JP;
Akira Satou, Ibaraki, JP;
Katsuyo Iwasaki, Nishinomiya, JP;
Kenichiro Taniwa, Takatsuki, JP;
Matsushita Toshiba Picture Display Co., Ltd., Osaka, JP;
Abstract
A plurality of magnet rings for correcting a convergence are arranged in a tube axis direction with spacers interposed therebetween, on an outer circumferential surface of a neck. A velocity modulation coil for modulating a scanning velocity in a horizontal direction of an electron beam is placed so that a position of the velocity modulation coil in the tube axis direction is overlapped with those of the magnet rings. At least one of the spacers is made of only a magnetic substance. Alternatively, at least one of the spacers is made of a magnetic substance, and the outermost surface in a radius direction of the spacer made of a magnetic substance is covered with a non-metallic material. Because of this, the magnetic field formed by the velocity modulation coil can be intensified without disturbing the magnetic field of the magnet rings of a CPU.