In accordance with the present invention, an opto-electric
hybrid board in which optical wiring is freely disposed without restriction by the arrangement of electrical elements and the like, and in which high-density mounting of
electrical wiring and optical wiring is possible, and an electric device including this opto-electric
hybrid board are provided. An opto-electrical
hybrid board (1000) of the present invention has an optical
waveguide (1), an optical connector disposed at an end section of the optical
waveguide (1), and an opto-electric conversion section (4) disposed below the optical
waveguide (1), and a
motherboard (
electrical wiring board) (5) disposed below the opto-electric conversion portion (4). Of these, the optical waveguide (1) includes a core layer (13) including a plurality of core sections (14) being configured to intersect with each other at one plane and side surface cladding sections, and a mirror (
optical path conversion section) 17 converting the
optical path of the core sections (14). Also, between the optical waveguide (1) and the
motherboard (5) is connected via an
electrical connector and preferably both the optical waveguide (1) and the
motherboard (5) are detachable.