Patent ID: 6894384
Filing Date: 2005-05-17
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor chip; metal thin wires respectively connected to electrodes on said semiconductor chip; a wiring board having an opening for accommodating said semiconductor chip and being electrically connected to said semiconductor chip by said metal thin wires; a heat spreader having a flat principal surface, said semiconductor chip and said wiring board being provided over the flat principal surface; a common adhesive layer which is in direct contact with and provided over the principal surface of said heat spreader and is in direct contact with both said semiconductor chip and said wiring board so as to bond both said semiconductor chip and said wiring board to said heat spreader, so that a heat transfer effect between said semiconductor chip and said heat spreader is about equal to a heat transfer effect between said wiring board and said heat spreader; and an encapsulating resin for sealing at least said metal thin wires, wherein said semiconductor chip is disposed in the opening of said wiring board, and is separated from edges of said wiring board that collectively define the opening by a space so that said semiconductor chip does not completely cover said heat spreader within the opening, and wherein a portion of said heat spreader within the opening that is not covered by said semiconductor chip being completely covered by said adhesive layer.