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:
Jun. 12, 2018
Filed:
Oct. 04, 2016
Shinko Electric Industries Co., Ltd., Nagano-shi, Nagano-ken, JP;
Kiyoshi Oi, Nagano, JP;
Tomotake Minemura, Nagano, JP;
Abstract
A wiring substrate includes a first connection terminal and a protective insulation layer. The first connection terminal is electrically connected to a wiring layer by a via wiring and projects upward from an upper surface of an insulation layer. The protective insulation layer is located on the upper surface of the insulation layer to contact and cover a portion of a side surface of the first connection terminal. The first connection terminal includes a lower portion that is continuous with the via wiring and an upper portion that is continuous with the lower portion. The lower portion is smaller in crystal grain size than the upper portion. The lower portion and the upper portion are formed from the same metal material. The side surface of the lower portion has a higher roughness degree than the side surface of the upper portion.