Patent ID: 9237879
Filing Date: 2016-01-19
CPC Classification: A61B,B06B,H01L

Claim Text:
1. A method of manufacturing an ultrasound transducer for an ultrasound imaging device including a plurality of transducer elements arranged in a two dimensional array on a single carrier of semi-conductor material, the ultrasound transducer including a stack of lack of layers, the method comprising the steps of: providing a carrier of semi-conductor material including a two dimensional array of conductive pads, wherein the carrier of semi-conductor material includes electronic circuitry connected with the conductive pads for further processing outside the ultrasound transducer; providing on the carrier a layer including piezo electrical material covering the two dimensional array of conductive pads; separating each of the plurality of transducer elements by dicing the two dimensional array on the carrier; and providing a grounding layer on the plurality of transducer elements for grounding each transducer element; and providing a buffer layer between the carrier and the layer comprising the piezo electrical material, wherein said dicing is performed with cuts having a depth that reaches the buffer layer, and wherein the method further comprises the steps of: applying a mask on the buffer layer in a pattern corresponding with the two dimensional array of conductive pads; and etching the buffer layer, whereby buckets are formed corresponding with the pattern including the conductive pads.