OPTO-ELECTRIC HYBRID BOARD

摘要

The purpose of the present invention is to provide a photo-electricity mixed substrate capable of reducing stress sharply according to a bending portion. The present invention comprises; an electric circuit board (E) in which an electric wire (2) and an insulating coverlay (3) which coats and protects the electric wire (2) are formed on the surface of an insulating layer (1); and an optical waveguide (W) in which a core (7) is patterned on the surface of a first clad layer (6), and the core is coated with a second clad layer (8). The present invention relates to the photo-electricity mixed substrate in which the electric circuit board (E) and the optical waveguide (W) are layered in the state in which the first clad layer (6) is in contact with the rear side of the insulating layer. A part of the photo-electricity mixed substrate is set as a bending predetermined unit. The coverlay (3) and the optical waveguide (W) are arranged to be not overlapped in the bending predetermined unit.