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:
Jul. 03, 1990
Filed:
Dec. 29, 1988
Matsushita Electronics Corporation, Kadoma, JP;
Abstract
A deflection yoke to be used in a color CRT apparatus having an aspherical face panel (30) has a pair of magnetic members (6,7) disposed on an outer surface of a larger diameter part of a cone shaped coil holding frame (11) in symmetry with respect to a vertical plan including center axis of the coil holding frame (11). Each of magnetic member (6,7) has upper and lower magnetic parts (6b,6c) for distorting vertical deflection magnetic field from barrel shape to pincushion shape, and the upper or lower magnetic parts (6b, or 6c) has protruded magnetic parts (6d or 6e), respectively protruded from the upper or lower magnetic parts (6b or 6c) towards screen part of the color CRT apparatus, for partially correction of pincushion distortion of raster at peripheral part of screen.