| 摘要 |
PROBLEM TO BE SOLVED: To provide a power module allowed to be inexpensively manufactured, having an excellent heat releasing property and for preventing electric insulation from being reduced even when a high voltage is applied for a long time under a high-temperature and high-humidity environment. SOLUTION: In the power module including an organic insulating layer 2 between a Cu base substrate 1 and a Cu substrate 4, a Cu migration preventing layer is formed on a surface of the Cu base substrate and/or the Cu substrate to which a positive voltage is applied, which is brought into contact with the organic insulating layer. COPYRIGHT: (C)2011,JPO&INPIT |
