Patent ID: 8330050
Filing Date: 2012-12-11
Classification: H01L,H05K,Y10T

Abstract:
1. A wiring board comprising: a substrate formed by a semiconductor material, a first pad which is provided on a first surface side of the substrate and on which a first electronic component is to be mounted, and a second pad which is provided on the first surface side of the substrate and on which a second electronic component having a larger amount of heat generation in an operation than that of the first electronic component is to be mounted; a first through electrode which penetrates the substrate and has one end connected electrically to the first pad; a second through electrode which penetrates the substrate and has one end connected electrically to the second pad; a through trench which penetrates the substrate and which is provided on the substrate in a portion positioned between a first mounting region on which the first electronic component is to be mounted and a second mounting region on which the second electronic component is to be mounted; and a heat intercepting member which is provided in the through trench, wherein a thermal conductivity of the heat intercepting member is less than a thermal conductivity of the substrate.