Patent ID: 8524032

Claim:
A method for producing a joined structure, comprising: pressure-bonding a first circuit member and a second circuit member together via a connecting film while the circuit members are being heated, to thereby join the circuit members with each other, wherein the connecting film, which electrically connects the first circuit member with the second circuit member having a nitrogen atom-containing film on a surface thereof facing the first circuit member, comprises: a first layer which is to be located at the first circuit member side, and a second layer which is to be located at the second circuit member side, wherein the first layer comprises a cationic curing agent and an epoxy resin, and the second layer comprises a radical curing agent, an acrylic resin and an epoxy compound, wherein one of the first layer and the second layer is a conductive particle-containing organic resin layer, and the other layer is an insulating organic resin layer containing no conductive particles, and wherein the minimum melt viscosity of the conductive particle-containing organic resin layer is ten times or more greater than the minimum melt viscosity of the insulating organic resin layer.