Patent ID: 7025848

Claim:
A method of bonding a heat sink to a chip package structure, wherein the chip package structure at least comprises a chip and a stiffener ring around the chip with the stiffener ring set up over a substrate, and the heat sink comprises a first protruding section located at a position corresponding to the chip and a plurality of second protruding sections located at positions corresponding to the stiffener ring, the method comprising the steps of: providing a gluing tape, wherein the gluing tape comprises a cutting pattern with a shape that matches with the first protruding section and the second protruding sections of the heat sink; aligning the first protruding section and the second protruding section of the heat sink with the cutting pattern and disposing the hear sink onto the gluing tape; detaching the heat sink from the gluing tape so that a portion of the gluing tape remains adhered to the first and the second protruding sections to form the gluing layer; and bonding the heat sink to the chip package structure such that the first protruding section of the heat sink is attached to the chip and the second protruding sections of the heat sink are attached to the stiffener ring.