| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoelectric hybrid substrate capable of greatly reducing stress applied to a bent portion.SOLUTION: A photoelectric hybrid substrate includes: an electric circuit substrate E in which pieces of electric wiring 2 and insulating coverlays 3 for covering and protecting the pieces of electric wiring 2 are formed on a front surface of an insulation layer 1; and an optical waveguide W in which cores 7 are formed on a surface of a first cladding layer 6 by pattern formation, and the cores 7 are covered with a second cladding layer 8. In the photoelectric hybrid substrate, the electric circuit substrate E and the optical waveguide W are laminated in a state of the first cladding layer 6 being in contact with a rear surface of the insulation layer 1. A part of the photoelectric hybrid substrate is set as a planned bent portion, and the coverlays 3 are disposed so as not to overlap the optical waveguide W in the planned bent portion. |
