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. 27, 1999
Filed:
May. 09, 1997
Matsushita Electronics Corporation, Osaka, JP;
Abstract
A planar member for a shadow mask is provided, which is hard to generate wrinkles in or break when being pulled at four sides to apply a tension to a beam-selecting area with beam-passing apertures. The planar member comprises the beam-selecting area, a first band frame portion surrounding the beam-selecting area, a second band frame portion disposed around and spaced from the first band frame, a plurality of bridge portions bridging the first and second band frame portions at plural points, and a plurality of outer areas with plural apertures, defined by the first and second band frame portions and two bridge portions. The connecting part of the bridge portion with the second band frame portion is reinforced in such a way that the width of the bridge portion increases gradually to connect with the second band frame portion.