Patent ID: 7663886

Claim:
An electronic circuit device, comprising: a lower-side substrate formed with a main circuit; an upper-side substrate formed with a drive control circuit that drivingly controls the main circuit; a support body positionally fixed by hardened resin above the lower-side substrate; and a case having a peripheral portion with an outer surface that has at least a portion of an external lead-out terminal of the drive control circuit and the main circuit thereon, and a substrate storage space that accommodates the lower-side substrate on a side inward from the peripheral portion, wherein: the lower-side substrate is accommodated inside the substrate storage space in an arrangement where the upper-side substrate is positioned over at least a portion of the lower-side substrate, a space over the lower-side substrate is filled with a filling material that is formed from a resin, and the upper-side substrate is supported and fixed by the support body.