Patent ID: 7795784

Claim:
An ultrasound transducer comprising: one or more microbeamformer integrated circuit chips, each including a plurality of bond pads; a two-dimensional array of acoustic elements; and a redistribution interconnect having a plurality of interconnect layers, each layer having a plurality of interconnect traces electrically coupled on a first side to the bond pads of the one or more microbeamformer integrated circuit chips and on a second side to the transducer elements, the redistribution interconnect providing an interconnection between the bond pads of the one or more microbeamformer integrated circuit chips with corresponding ones of the acoustic elements of the array, wherein on the first side the plurality of interconnect traces have a first pitch set in azimuth and elevation directions and on the second side the plurality of interconnect traces have a second pitch set in azimuth and elevation directions, the first and second pitch are different.