Patent ID: 9096418
Filing Date: 2015-08-04
Classification: A61B,B06B,B81B,B81C

Abstract:
1. An ultrasonic transducer comprising: a conductive substrate; a support which is disposed on the conductive substrate and includes cavities; a membrane which is disposed on the support to cover the cavities; a via hole penetrating the conductive substrate and the membrane; a first electrode layer which is disposed on an inner wall and a top portion of the via hole, the first electrode layer having a top surface at a same height as a top surface of the membrane; a second electrode layer which is disposed on a bottom surface of the conductive substrate to be spaced apart from the first electrode layer; a top electrode which is disposed to contact the top surface of the first electrode layer on the top surface of the membrane; and a pad substrate which is disposed below the conductive substrate and has formed thereon bonding pads electrically connected to the first and second electrode layers.