Patent ID: 8729712

Claim:
A semiconductor device, comprising: a semiconductor substrate; a cavity disposed in the semiconductor substrate extending at least from a first side of the semiconductor substrate through a second side of the semiconductor substrate; an insulation layer disposed over the first side of the semiconductor substrate and coating sidewalls of the cavity; a conductive layer disposed over the insulation layer and disposed in the cavity, wherein the conductive layer includes a bonding pad above the first side of the semiconductor substrate, and wherein the conductive layer connects to a metal stack at a bottom of the cavity wherein the bottom of the cavity is opposite the first side of the semiconductor substrate; a through silicon via (“TSV”) pad disposed below the bottom of the semiconductor substrate and connected to the metal stack, wherein the TSV pad is positioned to accept a TSV; a handle substrate disposed below the TSV pad; and a TSV running through the handle substrate and connecting with the TSV pad.