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:
Dec. 16, 2008
Filed:
Jun. 03, 2004
Shuichi Wakaki, Osaka, JP;
Tadao Ohkawa, Osaka, JP;
Yasuhito Ohwaki, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A wired circuit board is provided for controlling characteristic impedance at connection points between the read wire and write wire of a suspension board with circuit and terminal portions of the wired circuit board connected thereto. The invention provides improved signal transmission efficiency for fine pitch wiring or for high frequency signal. A conductive board is adhesively bonded to an insulating base layer of the wired circuit board at one side thereof opposite to the other side on which a suspension-board-side connection terminal portion is formed having a first terminal portion that connects with a read wire of the suspension board and a second terminal portion that connects with a write wire of the suspension board. An opening is provided adjacent to one of the first terminal portion and the second terminal portion and a stiffener board is adhesively bonded to the conductive board via an adhesive layer.