Interposer, module and electronics device including the same
An interposer with which the manufacturing steps are able to be simplified and which shows superior high frequency characteristics is provided. The interposer includes: a substrate having a front face and a rear face; a wiring that is formed on the front face side of the substrate and is electrically connected to a semiconductor chip; an electric device connected to the wiring; and a concave section that is formed from the rear face side of the substrate in a position corresponding to the electric device.