07-02-2019 дата публикации
Номер: US20190043820A1
A power electronics method and assembly produced by the method. The assembly has a substrate, having a power semiconductor element, and an adhesion layer disposed therebetween, wherein the substrate has a first surface that faces a power semiconductor element, a power semiconductor element has a third surface that faces the substrate, the adhesion layer has a second surface which, preferably across the full area, contacts the third surface and has a first consistent surface contour having a first roughness, and wherein a fourth surface of the power semiconductor element that is opposite the third surface has a second surface contour having a second roughness, said second surface contour following the first surface contour. 1. A power electronics assembly , comprising:{'b': 1', '3', '2, 'a substrate (), having a power semiconductor element (), and an adhesion layer () disposed therebetween;'}{'b': 1', '120', '160', '3, 'the substrate () has a first surface (, ) that faces the power semiconductor element ();'}{'b': 3', '320', '2, 'the power semiconductor element () has a third surface () that faces the substrate ();'}{'b': 2', '220', '320, 'the adhesion layer () has a second surface () which contacts the third surface () and has a first consistent surface contour having a first roughness; and'}{'b': 340', '3', '320, 'a fourth surface () of the power semiconductor element () that is opposite the third surface () has a second surface contour having a second roughness, said second surface contour following the first surface contour.'}2. The power electronics assembly claim 1 , according to claim 1 , wherein:a value of the second roughness is between 50% and 100%, of a value of the first roughness.3. The power electronics assembly claim 2 , according to claim 2 , wherein:{'b': 3', '3, 'the first roughness is configured so as to vary in one of a consistent and a inconsistent manner from a centre of the power semiconductor element () towards an outside of said power ...
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