| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit board with high reliability, capable of suppressing generations of cracks in an insulating layer and extensions of generated cracks.SOLUTION: A metal base circuit board comprises: a metal substrate; an insulating layer formed on the substrate; and a conductive circuit layer formed on the insulating layer. The insulating layer has a resin and an inorganic filler. The insulating layer contains at least one of a crack resistance component for suppressing generations of cracks at an edge of the conductive circuit layer or extensions of generated cracks, a crack resistance layer and a crack resistance region. |
