Patent ID: 8304664
Filing Date: 2012-11-06
Classification: H01L,H05K

Abstract:
1. An electronic component mounted structure comprising: an electronic component having a terminal; a wiring board having a terminal electrically connected to the terminal of the electronic component; and an interposing board disposed between the electronic component and the wiring board and having a structure including an insulating base material provided with a large number of filamentous conductors penetrating the insulating base material in a thickness direction thereof, wherein the terminal of the electronic component is electrically connected to the terminal of the wiring board via a plurality of filamentous conductors in the interposing board, wherein a pair of pads each made of a conductor layer are respectively formed on both surfaces of the insulating base material in such a manner that the pads share the plurality of filamentous conductors, and wherein one of the pads is connected to the terminal of the electronic component, and another pad is connected to the terminal of the wiring board, and wherein a coefficient of thermal expansion of the interposing board is selected to be higher than a coefficient of thermal expansion of the electronic component, and to be lower than a coefficient of thermal expansion of the wiring board.