An opto-electric hybrid board which includes an optical waveguide portion 2, an electric circuit board 1, and optical elements mounted on this electric circuit board 1. In the optical waveguide portion 2, a linear core 22 for an optical path and protruding alignment marks 24 for positioning of the optical...http://www.google.ca/patents/US8135248?utm_source=gb-gplus-sharePatent US8135248 - Opto-electric hybrid board and manufacturing method thereof