Patent ID: 9269485
Filing Date: 2016-02-23
CPC Classification: H01F,H01L,Y10T

Claim Text:
1. An inductor structure, comprising: a silicon wafer; a dielectric layer formed on the silicon wafer; a spirally patterned conductor layer formed over and in the silicon wafer and in the dielectric layer to form metal-containing layers, the spirally patterned conductor layer forming a planar spiral inductor; a via hole formed over and in the silicon wafer and in the metal-containing layers within the spirally patterned conductor layer, wherein the via hole is formed by a through silicon via (TSV) process and is formed through the silicon wafer; and a core layer filling the via hole, wherein the core layer extends from a bottom surface of the silicon wafer to a top surface of the metal-containing layers, and the core layer is insulated from the spirally patterned conductor layer and surrounded by the spirally patterned conductor layer.