There is provided a two-dimensional array for use in an acoustic imaging system which comprises a plurality of transducer segments each having a trace for exciting an electrode on each of the transducer segments, the trace and the electrode being formed of the same material. The two-dimensional array...http://www.google.se/patents/US5894646?utm_source=gb-gplus-sharePatent US5894646 - Method for the manufacture of a two dimensional acoustic array
