Patent ID: 7211889
Filing Date: 2007-05-01
Classification: H01L

Abstract:
1. A semiconductor package comprising: a wiring board having an upper surface and a lower surface; a semiconductor chip having a front surface and a back surface, the front surface being flip-chip bonded to the upper surface of the wiring board; an adhesive coated on the upper surface of the wiring board; a stiffener ring attached to the upper surface of the wiring board, wherein the stiffener ring comprises a window through which the semiconductor chip is exposed, and a plurality of through holes; a thermal interface material (TIM) coated on the back surface of the semiconductor chip; a heat spreader attached to the stiffener ring and the semiconductor chip, the stiffener ring being attached to the heat spreader by portions of the adhesive extending through the via holes and onto the upper surface of the stiffener ring, and the semiconductor chip being attached to the heat spreader by the TIM; and a plurality of external connection terminals positioned on the lower surface of the wiring board.