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. 06, 2012
Filed:
May. 14, 2007
Junya Sato, Tokyo, JP;
Nobuhiro Mikami, Tokyo, JP;
Shinji Watanabe, Tokyo, JP;
Atsumasa Sawada, Tokyo, JP;
Nozomu Nishimura, Tokyo, JP;
Junya Sato, Tokyo, JP;
Nobuhiro Mikami, Tokyo, JP;
Shinji Watanabe, Tokyo, JP;
Atsumasa Sawada, Tokyo, JP;
Nozomu Nishimura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A circuit board device, a wiring board connecting method, and a circuit board module device are provided for controlling a compression ratio of anisotropically conductive members within an optimal range, for restraining variations in the impact resilient force of the anisotropically conductive members even if an increased number of wiring boards are laminated, for restraining deformations of the wiring board and fluctuations in the impact resilient force of the anisotropically conductive members even if a static external force or the like is applied, for suppressing a linear expansion of the anisotropically conductive members, even if the ambient temperature changes, to increase the stability of electric connections, and for reducing the impact resilient force of the anisotropically conductive members to allow for a reduction in thickness. The circuit board device comprises wiring boards-, anisotropically conductive membersplaced between the individual wiring boards, functional blocksseparate from anisotropically conductive membersand are placed on the same plane as anisotropically conductive membersso as to enclose anisotropically conductive members, and a pair of holding blocksplaced to sandwich wiring boards-. These wiring boards-are kept compressed while they are clamped between pair of holding blocks, so that they are electrically connected with each other by anisotropically conductive members