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:
Apr. 08, 2008
Filed:
Feb. 04, 2005
Kenichiro Taniwa, Takatsuki, JP;
Hideaki Etou, Hirakata, JP;
Kenichiro Taniwa, Takatsuki, JP;
Hideaki Etou, Hirakata, JP;
Matsushita Toshiba Picture Display Co., Ltd., Osaka, JP;
Abstract
In a cross-section including a tube axis, assuming that Trepresents a thickness of a funnel at a point on an outer circumferential surface of the funnel, which is placed at the same position in a tube axis direction as that of an end of a horizontal deflection coil on a phosphor screen side, and Trepresents a thickness of the funnel at a point on the outer circumferential surface of the funnel, which is placed at the same position in the tube axis direction as a position 7 mm away from the end of the horizontal deflection coil on the phosphor screen side to the phosphor screen side along the tube axis, the funnel includes at least one cross-section including the tube axis satisfying a relationship: T/T≧1.18. Owing to this, cone halation can be prevented while an X-ray leakage amount is limited to a predetermined value or less.