Patent ID: 8158887
Filing Date: 2012-04-17
Classification: C09J,H01L,H05K,Y10T

Abstract:
1. An adhesive film, comprising: a first adhesive layer which contains a first main resin component and dispersed conductive particles; and a second adhesive layer which contains a second main resin component, and adheres to the first adhesive layer, each of the adhesive layers containing a secondary resin component, wherein when the first adhesive layer and the second adhesive layer are raised in temperature, the secondary resin component reacts, so that the first adhesive layer and the second adhesive layer are cured, wherein in the first adhesive layer the first main resin component has a glass transition temperature higher than that of the secondary resin component, wherein in the second adhesive layer the second main resin component has a glass transition temperature which is higher than that of the secondary resin component and lower than that of the first main resin component, and wherein a reaction peak temperature of each of the first adhesive layer and the second adhesive layer is lower than the glass transition temperature of the first main resin component and higher than the glass transition temperature of the second main resin component, the reaction peak temperature being a temperature at which a calorific value of the adhesive layer is maximum during temperature rise.