Patent ID: 8222531
Filing Date: 2012-07-17
Classification: H01L,H05K

Abstract:
1. A board interconnection structure, comprising: a first printed wiring board having a first insulating layer and a first conductive circuit arranged on the first insulating layer, the first conductive circuit including a first connection terminal on an end portion thereof, the first connection terminal being provided with at least two projection portions so as to have an upper surface width narrower than a bottom surface width thereof, the at least two projection portions disposed with a gap and extending in an extending direction of the first conductive circuit; a second printed wiring board having a second insulating layer and a second conductive circuit arranged on the insulating layer, the second conductive circuit including a second connection terminal; and a connection layer interconnecting the first connection terminal, the connection layer having fillets formed along longitudinal side surfaces of the first and second connection terminals and also formed on side surfaces of the at least two projection portions with a gap, the side surface of the at least two projection portions being facing to each other.