Patent ID: 7341890

Claim:
A method for manufacturing a circuit board with a built-in electronic component, comprising: (a) forming an electronic component by attaching at least two semiconductor chips with an adhesive; (b) positioning and mounting, on a sheet-form first electroconductive body, the electronic component including a first external connection terminal formed on a first surface and a second external connection terminal formed on a second surface different from the first surface so as to form an electronic component-mounted structure in which the first external connection terminal and the first electroconductive body are electrically connected; (c) forming a layered structure by positioning and superposing an uncured sheet-form material formed of a mixture including an inorganic filler and a thermosetting resin, and a sheet-form second electroconductive body in this order on the electronic component-mounted structure; (d) pressing the layered structure in a layered direction and heating the same to embed the electronic component of the electronic component-mounted structure in the sheet-form material, and to connect electrically the second external connection terminal and the second electroconductive body; and (e) forming wiring patterns using the first electroconductive body and the second electroconductive body respectively.