Patent ID: 7394147

Claim:
A semiconductor package, comprising: a carrier; a first chip having an upper surface and a lower surface opposite to the upper surface, wherein the lower surface is mounted on the carrier; a nonconductive adhesive disposed on the upper surface of the first chip; a second chip having an upper surface and a lower surface opposite to the upper surface, wherein the lower surface is mounted on the upper surface of the first chip by means of the nonconductive adhesive, and the adherent area between the nonconductive adhesive and the second chip is larger than 90% of the area of the lower surface of the second chip; a plurality of supporting balls disposed in the nonconductive adhesive and comprising a plurality of first supporting balls supporting the second chip, wherein said supporting balls further comprise a plurality of second supporting balls, the diameter of the first supporting ball is bigger than that of the second supporting ball, and the diameter of the second supporting ball is smaller than the distance between the first and second chips; and wherein the number of the second supporting balls is less than 20% of that of all supporting balls.