Patent ID: 7894203
Filing Date: 2011-02-22
Classification: H01L,H05K

Abstract:
1. A multi-layer printed wiring board comprising: a first substrate having an opening and having a plurality of external terminals positioned to be connected to a package substrate; a second substrate laminated to the first substrate and having a plurality of external terminals positioned to be connected to a mother board, the second substrate having a continuous metallic layer portion in the opening of the first substrate and a plurality of non-through holes filled with conductive material and connected to the continuous metallic layer portion such that the non-through holes are electrically connected to each other; and an IC component having a terminal side including a plurality of terminals, and a non-terminal side which is opposite to the terminal side, the IC component being loaded in the opening of the first substrate such that the non-terminal side of the IC component contacts the metallic layer portion and the terminals of the IC component face outward of the opening in the first substrate, wherein the IC component is accommodated in the opening such that the metallic layer portion and non-through holes of the second substrate irradiate heat generated by the IC component.