Patent ID: 7868435
Filing Date: 2011-01-11
Classification: C08L,C09J,H01L,Y10T

Abstract:
1. An IC chip comprising a chip portion bonded to a reinforcing plate by a cured adhesive composition interposed between said chip portion and said reinforcing plate; wherein prior to curing, said adhesive composition comprises: an epoxy resin base material having two or more epoxy groups per molecule; a hardening agent that promotes the curing of said epoxy resin base material; and a filler with a maximum particle diameter from 0.2 μm to 0.8 μm; wherein the reinforcing plate comprises a surface featuring recesses and planar areas, said recesses having a pitch of 30 μm to 100 μm, each recess having a depth ranging between 15 μm to 30 μm and a width ranging between 20 μm to 50 μm; wherein the cured adhesive composition is filled into said recesses and provided on said planar areas; and wherein the filler of the cured adhesive provided on said planar areas has a maximum particle diameter from 0.2 μm to 0.8 μm.