Patent ID: 7964800
Filing Date: 2011-06-21
Classification: H01L,H05K

Abstract:
1. A board interconnection structure, comprising: a first printed wiring board in which a first conductive circuit is arranged on a first insulating layer, the first conductive circuit including, on an end portion thereof, a first connection terminal having an upper surface width that is narrower than a bottom surface width thereof; a second printed wiring board in which a second conductive circuit including a second connection terminal is arranged on a second insulating layer; and a connection layer that forms fillets along longitudinal side surfaces of the first connection terminal, and interconnects the first connection terminal and the second connection terminal, wherein the fillets have concave side surfaces, wherein the first connection terminal extends along the first insulating layer in a longitudinal direction, and wherein the longitudinal side surfaces connect the bottom surface of the first connection terminal to the upper surface.