Patent ID: 6847112
Filing Date: 2005-01-25
Classification: H01L,Y10T

Abstract:
1. A semiconductor device comprising: heat sink formed of a metallic plate; a pair of screwing pieces having respective inner end portions connected respectively to the heat sink, the screwing pieces further having outer end portions formed with through spaces for screwing; one or plural semiconductor chips fixed to the main surface of the heat sink; a seal member, the seal member covering a main surface portion of the heat sink and also covering the inner end portions of the screwing pieces; a first lead having an outer end portion projecting from the seal member and an inner end portion which is positioned within the seal member and electrically connected to the semiconductor chip; a second lead having an outer end portion projecting from the seal member and an inner end portion which is positioned within the seal member and electrically connected to the semiconductor chip; and wherein the heat sink and the screwing pieces are constituted by respective discrete pieces; a thickness of the heat sink is larger than thickness of the screwing pieces; and the screwing pieces are more easily deformed than the heat sink.