Patent ID: 8253176

Claim:
A photodiode device, comprising: a light absorption layer defining a light-facing side and a back-light side, the light absorption layer having at least one p-n junction; a via passing through the absorption layer, the via having a side wall and a bottom; a patterned conformal isolation layer covering the side wall and the bottom; a first patterned conductive layer disposed on the back-light side of the light absorption layer, the first patterned conductive layer having a first portion covering the patterned conformal isolation layer, the conformal isolation layer separating the first portion from the light absorption layer; a second patterned conductive layer disposed on the light-facing side of the light absorption layer; and an opening passing through the patterned conformal isolation layer, wherein the opening is filled with the second patterned conductive layer such that the second patterned conductive layer is connected to the first portion of the first patterned conductive layer.