| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductor device capable of moderating thermal stress while suppressing a decrease in thermal conductivity of heat generated by a semiconductor element. <P>SOLUTION: A semiconductor module comprises a circuit board, a semiconductor element bonded onto the circuit board by soldering, and fin units 13 bonded to the circuit board. The circuit board is composed by bonding a front metal plate to a surface of a ceramic substrate 14 and a rear metal plate 16 to a rear surface of the ceramic substrate. The fin units 13 which form an uneven shape in a side view are bonded to the rear metal plate 16. A first groove 22 which moderates thermal stress caused by heat generated by the semiconductor element is formed in the rear metal plate 16. A second groove 21 which moderates thermal stress caused by heat generated by the semiconductor element is formed in the portion facing the first groove 22 in a salient 13a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
