Patent ID: 7969027

Claim:
A semiconductor device comprising an organic substrate, at least one semiconductor chip provided on a surface of the substrate, and a cured resin composition encapsulating the semiconductor chip provided on the surface of the substrate, wherein the organic substrate has at least one groove which is filled with the cured resin composition, the semiconductor chip is connected to the organic substrate with a bonding wire which extends through the groove; and the bonding wire is encapsulated with the cured resin composition, an absolute value of a distance between an imaginary line connecting two diagonally opposite corners of the substrate and a highest or lowest position on the surface of the substrate between the corners is smaller than 600 μm, as measured with a laser three-dimensional measuring instrument, a total volume ratio of the semiconductor chip to the semiconductor device ranges from 18 to 50%, and the cured resin composition comprises an inorganic filler (C) comprising (C1) at least one inorganic filler having an average thermal expansion coefficient of from 1.0×10 −5 /° C. to 3.0×10 −5 /° C. at a temperature of from 40 to 400° C. and (C2) at least one inorganic filler having an average thermal expansion coefficient smaller than 1.0×10 −5 /° C. at a temperature of from 40 to 400° C., a weight ratio of the inorganic filler (C) to a total weight of the cured resin composition ranges from 80 to 90%, and a weight ratio of the inorganic filler (C1) to the cured resin composition ranges from 5 to 45%.