Patent ID: 7910406

Claim:
A manufacturing method of an electronic circuit device, comprising: setting a positioning plate having an element accommodating region for accommodating a semiconductor element, and a terminal accommodating region formed in a deeper step than the element accommodating region, for accommodating a plurality of external connection terminals; arranging the semiconductor element in the element accommodating region in a direction for exposing electrode pads of the semiconductor element, and arranging the external connection terminals in the terminal accommodating region; connecting the semiconductor element and the external connection terminals electrically by connecting conductors; a first resin molding step of covering and molding the connecting conductors, the semiconductor element and exposed sides of the external connection terminals with an insulating resin; and a second resin molding step of covering and molding regions of the external connection terminals contacting with the terminal accommodating region except for their terminal surfaces, and a region excluding a surface of the semiconductor element contacting with the element accommodating region, with an insulating resin, burying the semiconductor element in the insulating resin, integrating the semiconductor element and the external connection terminals, and exposing the terminal surfaces.