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:
Mar. 14, 2006
Filed:
Aug. 03, 2004
Norio Shimizu, Tokyo, JP;
Toshio Uchikawa, Tokyo, JP;
Norio Shimizu, Tokyo, JP;
Toshio Uchikawa, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
The mask body satisfies the following conditions,()/≧0.020, and0.065≦≦0.095where in a substantially rectangular effective region with a predetermined curvature of the mask body, Lis a distance between a central part and a diagonal-axis end of the effective region, Lis a distance between a horizontal-axis end and the diagonal-axis end of the effective region, Zis a height difference between the central part and the diagonal-axis end in a direction of the tube axis, and Zis a height difference between the central part and the horizontal-axis end in the direction of the tube axis. With this structure, the mechanical strength of the mask body can be improved, and deformation of the mask body in a fabrication process and due to external shock can be prevented.