Patent ID: 6268648
Filing Date: 2001-07-31
Classification: H01L,H05K

Abstract:
A semiconductor device fabricated by forming at least one cavity portion on a semiconductor chip package substrate, mounting at least one semiconductor chip in said cavity portion, and sealing with plastic sealant, wherein:said semiconductor chip package substrate comprises wiring disposed along surface of said substrate and wall surfaces of said substrate in said cavity portion,said wiring comprises an external connection terminal portion for connecting to external connection terminals which are provided on the surface of said substrate at a side of said cavity portion's opening, an internal connection terminal portion for connecting to the mounted semiconductor chip, and a wiring portion disposed in between said external connection terminal portion and said internal connection terminal portion,said wiring portion is buried in a surface of said substrate and one of said wall surfaces of said substrate in said cavity portion, andsaid internal connection terminal portion is disposed inside of said cavity portion.