Patent ID: 8198734

Claim:
An electronic structure, comprising: a semiconductor structure including a first layer of semiconductor material having first and second surfaces and a second layer of semiconductor material having first and second surfaces joined together by a first layer of insulating material having first and second surfaces and a second layer of a different insulating material having first and second surfaces with the first surface of said first layer of insulating material in contact with the first surface of said second layer of insulating material and the second surface in contact with said second surface of said first layer of semiconductor material and with the first surface of said second layer of insulating material in contact with the first surface of said first layer of insulating material and the second surface in contact with the second surface of said second layer of semiconductor material; at least one via in said first layer of semiconductor material having a wall surface extending from said first surface of said first layer of semiconductor material through said first layer of semiconductor material and said first layer of insulating material to the first surface of said second layer of insulating material; a layer of insulating material covering said wall surface of said at least one via made of the same material as said first layer of insulating material and extending to the first surface of said second layer of insulating material; and a filler material filling said at least one via so as to be coplanar with said first surface of said first layer of semiconductor material and extending to the first surface of said second layer of insulating material.