Ultrasound transducer featuring a pitch independent interposer and method of making the same

Abstract

An ultrasound transducer () comprises an application specific integrated circuit (ASIC) (), an array of acoustic elements (), and a pitch independent interposer (). The ASIC () includes a plurality of contact pads () on a surface of the ASIC that are separated from adjacent ones thereof by a first pitch. The acoustic elements () of the array () are separated from adjacent ones thereof by a second pitch. In addition, the pitch independent interposer () features a plurality of conductive elements () separated from adjacent ones thereof by a third pitch different from both the first pitch and the second pitch. The pitch independent interposer () is electrically coupled (i) on a first side to the ASIC via a first subset of the plurality of conductive elements and (ii) on a second side to the array of acoustic elements via a second subset of the plurality of conductive elements, wherein one or more of the plurality of conductive elements () electrically couples a contact pad () of the ASIC () with a corresponding acoustic element () of the array () of acoustic elements.