| 摘要 |
<p>PROBLEM TO BE SOLVED: To package a power device on a flexible sheet by fixing the flexible sheet with its fixing hole and a first projection on a metal substrate, and bringing the flexible sheet into contact with a second projection on the metal substrate. SOLUTION: A substrate 10 is pressed from its rear surface to form projections 20 and 21 on a packaging surface of the substrate. A fixing hole 22 is provided on a flexible sheet 11 such that the projection 20 is inserted into the fixing hole 22. The projection 21 is provided in a region where a power device 17 is provided. The flexible sheet 11 is fixed with the projections, and is free from the metal substrate except the fixed portions. There is a predetermined interval between the flexible sheet 11 and the metal substrate 10 by the device packaged on the substrate. By this constitution, a heat sink 18 and the power device 17 are packaged on the flexible sheet 11.</p> |
