Patent ID: 11201143

Abstract:
There is a problem that the reliability of insulation is lowered. A length L2 from a center P of a conductor layer 334 to a peripheral edge portion of an insulating member 333 is formed to be longer than a length L1 from the center P of the conductor layer 334 to a peripheral edge portion of a protruding portion 307a of a base member 307. In other words, a base end surface 308 of the peripheral edge portion of the protruding portion 307a is located on an inner side with respect to an insulating member end surface 336 of the peripheral edge portion of the insulating member 333. Further, the insulating member end surface 336 of the insulating member 333 and a conductor layer end surface 344 of the conductor layer form an end surface at the same position. Since the base end surface 308 of the peripheral edge portion of the protruding portion 307a is located on the inner side with respect to the insulating member end surface 336 of the peripheral edge portion of the insulating member 333 in this manner, an insulation distance can be secured.