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:
Oct. 12, 2004
Filed:
Sep. 25, 2000
Takeshi Ikegami, Tokyo, JP;
Toshihiro Hatori, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
A shadow mask with a slot having a substantially rectangular shape and a curved slot. The rectangular slot is composed of a back side opening formed on an electron beam incident side, a front side opening having a large area to allow the electron beam to pass, and a side wall sections inclining between the back side opening and the front side opening. The curved slot is composed of a back side opening ( ) formed on the electron beam incident side and curved such that both longitudinal end portions are apart from an axis of ordinate passing a central portion of the shadow mask, a front side opening ( ) formed having a large area to allow the electron beam to pass and side wall section ( ) inclining between the back side opening and the front side opening.