Patent ID: 9366815
Filing Date: 2016-06-14
CPC Classification: G02B,H05K

Claim Text:
1. An opto-electric hybrid board comprising: an electric circuit board including an insulative layer having front and back surfaces, and an optical element mounting pad formed on the front surface of the insulative layer; an optical waveguide including a cladding layer, the optical waveguide being formed on the back surface of the insulative layer of the electric circuit board in such a manner that the cladding layer is in contact with the back surface of the insulative layer; and a metal layer provided between the insulative layer and the cladding layer and disposed in corresponding relation to the optical element mounting pad, wherein the metal layer has a yield stress of not less than 170 MPa or 0.2% proof stress of not less than 170 MPa, and wherein the metal layer has a thickness in the range of 10 to 25 μm.