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:
Aug. 28, 2012
Filed:
Mar. 12, 2008
Yoshihiro Nabe, Tokyo, JP;
Hiroshi Asami, Shizuoka, JP;
Yuji Takaoka, Kanagawa, JP;
Yoshimichi Harada, Kanagawa, JP;
Yoshihiro Nabe, Tokyo, JP;
Hiroshi Asami, Shizuoka, JP;
Yuji Takaoka, Kanagawa, JP;
Yoshimichi Harada, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor device includes a semiconductor substrate having first and second surfaces opposite each other, the first surface being an active surface by provided with an electronic element thereon, a pad electrode formed to be connected to the electronic element in a peripheral portion of the electronic element on the active surface, a first opening extending from the second surface toward the pad electrode so as not to reach the first surface of the semiconductor substrate, a second opening, formed to reach the pad electrode from a bottom surface of the first opening, having a diameter smaller than that of the first opening, an insulating layer formed to cover sidewall surfaces of the first opening and the second opening, and a conductive layer formed, inside of the insulating layer, to cover at least an inner wall surface of the insulating layer and a bottom surface of the second opening.