Patent ID: 7989148

Claim:
A method for forming a photoelectric composite board comprising the steps of: forming a light guide layer having a light guide with a light deflector on a metal thin film; forming mounting lands on a surface of the light guide layer; forming solder resist layer on the surface of the light guide layer so as to cover the mounting lands; setting a reference point on the surface of the light guide layer just above the light deflector; defining coordinates of centers of electrode pads to which an photoelectric transducer is mounted with respect to the reference point on the solder resist layer so as to overlap a center of a light emitting portion or a light receiving portion of the photoelectric transducer on the light deflector when the photoelectric transducer is mounted on the photoelectric composite board; and forming openings on the solder resist layer on a basis of defined coordinates so that a part of each the mounting land is exposed, and thereby, the electrode pads to which the photoelectric transducer is mounted are formed.