Patent ID: 8837872

Claim:
A device comprising: a substrate; an illuminant device in or on said substrate; a sensor device in or on said substrate; a waveguide structure over said substrate, said illuminant device and said sensor device, wherein said waveguide structure comprises a first optical-signal transmission part and a power/ground delivery part surrounding said first optical-signal transmission part, wherein said power/ground delivery part comprises a first metal layer and a second metal layer, wherein said first metal layer comprises a first portion vertically under said first optical-signal transmission part and a second portion not vertically under said first optical-signal transmission part, wherein first and second openings are through said first portion of said first metal layer, wherein said illuminant device comprises a first region under said first opening, and said sensor device comprises a second region under said second opening, wherein said first optical-signal transmission part contacts said first portion of said first metal layer and is over said first and second regions, wherein said second metal layer contacts said second portion of said first metal layer and a top surface and sidewalls of said first optical-signal transmission part; an insulating layer over said waveguide structure; and a metal interconnect over said insulating layer, wherein said metal interconnect is connected to said second metal layer.