Patent ID: 8958215
Filing Date: 2015-02-17
Classification: H01L,H05K

Abstract:
1. A circuit board for a second electronic circuit that is laminated on a side of a first electronic circuit on which a high exothermic element is disposed wherein: said circuit board comprises a substrate, which comprises at least one dielectric layer mainly comprising ceramics, and at least one first surface electrode formed on a first side of said circuit board that faces said first electronic circuit, at least a part of said first surface electrode is embedded inside of said substrate, a remaining part of said first surface electrode is exposed outside of said circuit board for said second electronic circuit and defines a major portion of said first side of said substrate that faces said first electronic circuit such that a portion of a first surface of said first surface electrode is opposed to at least one terminal of said high exothermic element, and the thickness of said first surface electrode is not less than 100 micrometers in a direction perpendicular to said first surface.