Patent ID: 9059306
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate having a first region and a second region disposed on the first region; a VDMOS device formed using the semiconductor substrate and disposed proximate to the top surface of the second region, the VDMOS device having a first drain region formed in the first region and at least one first source region formed in the second region, the VDMOS device including a diffusion region disposed adjacent to the second region; a LDMOS device formed using the semiconductor substrate and disposed proximate to the top surface of the second region, the LDMOS device having a second drain region formed in the second region and a second source region formed in the second region, the LDMOS device including an extended drain region, the extended drain region including a reduced surface field region configured to modify a breakdown voltage of the LDMOS device; an encapsulation structure disposed over the semiconductor substrate; a first trench formed in the semiconductor substrate and through the encapsulation structure, the first trench extending from a top surface of the encapsulation structure to the first region; a second trench formed through the encapsulation structure, the second trench extending from the top surface of the encapsulation structure to the second source region; and a conductive material disposed directly over the top surface of the encapsulation structure and within the first trench and the second trench for electrically coupling the first drain region to the second source region.