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:
Aug. 12, 2003
Filed:
Feb. 15, 2000
Hisashi Nose, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a cathode ray tube of the present invention, the shape of an outer wall opening and the shape of an inner wall opening in a direction perpendicular to a tube axis within a range which extends 35 mm to the panel portion side and 20 mm to the neck portion side from a reference line set in a deflection yoke mounting region of a funnel portion are respectively formed in an approximately rectangular shape and an approximately pin-cushion shape, and the shape of the inner wall opening of deflection yoke mounting region of the funnel portion in a direction perpendicular to a tube axis direction has a radius of curvature Rc at respective corners, and the difference between a first straight line V and H which connects neighboring bottom portions of the corners and a second straight line V and H which is in contact with a central point of the inner wall between the neighboring corner portions and is disposed parallel to the first straight line is set to 2.0 mm at maximum provided that the direction toward the tube axis is taken as +.