Patent ID: 9673316
Date: 2017-06-06
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a first semiconductor substrate having a planar top surface and a planar bottom surface; a vertical diffused metal-oxide-semiconductor device disposed at least partial within the semiconductor substrate, the vertical diffused metal-oxide-semiconductor device having a first source region and a second source region disposed proximate to the planar top surface and at least one drain region disposed proximate to the planar bottom surface, the vertical diffused metal-oxide-semiconductor device including an epitaxial region, the epitaxial region surrounding a first source region and a second source region; a gate extending across the planar top surface and disposed over at least a portion of the first source region and at least a portion of the second source region; a single passivation layer disposed over the planar top surface, the single passivation layer at least substantially encapsulating the gate; a through-substrate via disposed within the first semiconductor substrate; a front side electrical interconnection electrically connected to the through-substrate via and disposed over the planar top surface; and a second semiconductor substrate coupled to the planar bottom surface of the first semiconductor substrate, the second semiconductor substrate including at least one back side electrical interconnection disposed therein, the at least one back side electrical interconnection for terminating the through-substrate via, the at least one back side electrical interconnection electrically connected to the at least one drain region, wherein the at least one back side electrical interconnection is in contact with the planar bottom surface of the first semiconductor substrate prior to the through-substrate via being formed, and wherein the through-substrate via provides an electrical interface between the front side electrical interconnection and the at least one back side electrical interconnection.