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:
May. 28, 2013
Filed:
May. 24, 2011
Applicants:
Hitoshi Kondo, Nagano, JP;
Tomoyuki Shimodaira, Nagano, JP;
Masako Sato, Nagano, JP;
Inventors:
Assignee:
Shinko Electric Industries Co., Ltd., Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/12 (2006.01); H01L 23/053 (2006.01); H01L 23/14 (2006.01); H01L 23/48 (2006.01); H01L 23/52 (2006.01); H01L 29/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wiring substrate includes plural wiring layers and plural insulation layers being alternately stacked one on top of the other. The plural insulation layers are formed with insulation resin having the same composition. The plural insulation layers are formed with a filler having the same composition. The filler content of each of the plural insulation layers ranges from 30 vol % or more to 65 vol % or less. The thermal expansion coefficient of each of the plural insulation layers ranges from 12 ppm/° C. or more to 35 ppm/° C. or less.