Patent ID: 7676123

Claim:
A method of manufacturing an optical and electrical circuit board; the method comprising: providing a lens hole penetrating an object to be processed of which a first electrical wiring layer is arranged on both faces of a base layer, an insulating layer is formed on each of the first electrical wiring layers, and a second electrical wiring layer is formed on each of surfaces of the insulating layers, in a thickness direction thereof; providing a transparent supporting film on one face of the object to be processed so as to close one end of the lens hole; injecting a first photoreactive material into the lens hole from an opening at the other end of the lens hole; exposing exposure light to the first photoreactive material from the supporting film side; forming a cured portion and a soluble portion of the first photoreactive material by partially exposing the first photoreactive material to the exposure light passed through the supporting film; and then dissolving and removing the soluble portion of the first photoreactive material for development so as to form a micro convex lens in the lens hole.