OPTICAL/ELECTRICAL HYBRID WIRING BOARD AND ITS MANUFACTURING METHOD

摘要

An optical fiber buried layer in which an optical fiber is buried is provided in part of the layers of an electrical wiring board constituting a mother board on which an electric circuit is mounted. A hole is made in the surface of the buried layer to expose one end of the buried optical fiber. A reflective face having a 45 DEG inclination is provided on the exposed end of the optical fiber to reflect light to be emitted from the optical fiber in a direction perpendicular to the board plane of the wiring board. The reflected light enters the end face of an optical fiber of a daughter board. Light emitted from the optical fiber end face of the daughter board is reflected by the 45 DEG reflective face and enters the optical fiber in the buried layer.