Patent ID: 6677185
Filing Date: 2004-01-13
Classification: H01L

Abstract:
A method of affixing a heat sink to a substrate and package thereof, having a substrate with a position for receiving a semiconductor chip, at least a semiconductor chip for affixing on said position and electrically connecting said substrate, an appropriate thickness of adhesive agent by scraping by means of screen printing technology, a heat sink for covering said semiconductor chip and provided with a plurality of dimples for affixing to said substrate, said method comprising steps of:a. affixing said semiconductor to said substrate and utilizing a scraper to apply a layer of adhesive agent with an appropriate thickness of adhesive on a platform from said adhesive agent; b. utilizing a sucker to move said heat sink to a position above said layer of adhesive agent, and dipping said dimples of said heat sink into said adhesive layer so as to adhere some adhesive agent onto said dimples, and then moving said heat sink above said semiconductor chip; c. affixing said heat sink to said substrate to cover said semiconductor chip; and d. enclosing said heat sink with epoxy resin to form a package.