Opto-electric hybrid board and method of manufacturing same

摘要

An opto-electric hybrid board which is capable of suppressing the increase in light propagation losses and which is excellent in flexibility, and a method of manufacturing the same are provided. The opto-electric hybrid board includes an electric circuit board (E), an optical waveguide (W), and a metal layer (M). The electric circuit board (E) includes an insulative layer (1) having front and back surfaces, and electrical interconnect lines (2) formed on the front surface of the insulative layer (1). The optical waveguide (W) is formed on the back surface of the insulative layer (1) of the electric circuit board (E). The metal layer (M) is formed between the cladding layer of the optical waveguide (W) and the insulative layer (1) of the electric circuit board (E). At least part of the metal layer (M) is formed in one of first and second patterns. The first pattern includes a distribution of dot-shaped protrusions (Ma), and the second pattern includes a distribution of dot-shaped recesses (Mb). A first cladding layer (under cladding layer) (6) of the optical waveguide (W) fills a site where the metal layer (M) is removed by the patterning.