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. 15, 2011
Filed:
May. 21, 2008
Susumu Kumakura, Tokyo, JP;
Susumu Kumakura, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an electronic circuit device in which the bonding state of electrodes can be detected easily with high precision. The electronic circuit device has a stack structure in which a plurality of electronic circuit boards () are stacked in three or more layers through ball electrodes () bonded to electrode pads (), wherein the electrode pads are disposed such that transmission shaded images of a pair of the electrode pads provided between adjacent layers partially overlap each other and have a non-overlapping region in which the transmission shaded images of the pair of electrode pads are free from overlapping and such that the transmission shaded image of the non-overlapping region is at least partially free from overlapping with transmission shaded images of all the other electrode pads.