| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electronic controller that prevents a current path from having a defect in continuity due to cracking even if a multilayer substrate formed by stacking a substrate having a pattern wired includes metal for heat radiation and an electronic element generating heat. <P>SOLUTION: An electronic substrate 8 has electric signal lines wired so that the current path A including an electric signal line 11 connecting with a surface that the electronic element 1 comes into contact with when surface-mounted and a heat radiation path C when a contact surface portion 6 of the electronic element is surface-mounted in contact with the metal 13 for heat radiation exposed on a surface 16 of the electronic substrate do not overlap each other. Consequently, the current path is prevented from having the defect in continuity due to cracking. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
