Patent ID: 8481374
Filing Date: 2013-07-09
Classification: H01L

Abstract:
1. A method of forming a substrate diode in a semiconductor device, the method comprising: forming a well region of said substrate diode in a crystalline material of a substrate of said semiconductor device; forming a first opening through a first trench isolation structure and a second opening through a second trench isolation structure after forming the well region, said first and second openings extending through a buried insulating layer of said semiconductor device so as to expose a portion of the well region filling said first and second openings with a conductive material so as to provide a first contact region and a second contact region of said substrate diode; forming a PN junction of said substrate diode on the basis of the well region and said conductive material formed in said first opening; forming a circuit element in and above an active region after filling said first and second openings with said conductive material; forming an interlayer dielectric material above said active region and said first and second contact regions; and forming contact elements in said interlayer dielectric material so as to connect to said circuit element and to said first and second contact regions of said substrate diode.