US Patent 8625938 Electronic device having optical communicating part

An electronic device includes a substrate having a first surface and a second surface, a semiconductor device disposed on a first region on the first surface of the substrate, a via structure penetrating the substrate, and including a conductor, an optical channel disposed in the via structure, and an optical-electrical converting device disposed at an end of the via structure, electrically connected to the semiconductor device through the conductor of the via structure, and optically connected to the optical channel.