Patent ID: 9607877
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. A substrate structure, comprising: a semiconductor substrate comprising a first side and a second side opposing the first side, wherein at least one of the first side and the second side is configured as a device forming side; a first isolation region, wherein the first isolation region includes a first trench extending through the semiconductor substrate from the first side to the second side, and wherein the first trench is filled with only a first dielectric layer; and a third isolation region, wherein the third isolation region comprises: a third trench extending through the semiconductor substrate from the first side to the second side; a second heat dissipating layer formed on sidewalls of the third trench; and a third dielectric layer filling a space of the third trench between inner walls of the second heat dissipating layer, wherein the sidewalls of the third trench surround the second heat dissipating layer, and the second dissipating layer surrounds the third dielectric layer.