Patent ID: 7791204
Filing Date: 2010-09-07
Classification: H01L,H05K

Abstract:
1. A semiconductor device comprising: a wiring substrate including a core substrate having first and second surfaces opposed to each other, and first and second build-up substrates on the first and second surfaces of the core substrate, respectively; a semiconductor chip comprising a substrate which has third and fourth surfaces opposite to each other, semiconductor elements on the third surface, a multilayer structure on the third surface, and pad electrodes on the multilayer structure, a resin layer between the semiconductor chip and the first build-up substrate and between the first bump electrodes; and second bump electrodes on the second build-up substrate and electrically connected with the third wiring layers of the second build-up substrate, wherein diameters of the second and third through holes of the first and second build-up substrates are smaller than diameters of the first through holes of the core substrate, and the first insulating layer of the core substrate, and the second and third insulating layers of the first and second build-up substrates, contain glass cloths, respectively.