The invention described herein relates to an improved biopsy needle which enhances the accuracy of the sampling procedure and minimizes the trauma caused by the procedure. The method for implementing the incentive adder users a novel XOR configuration constructed with dynamic CMOS logic circuits. A quick glancing ion mill can be performed to remove the small amount of redep that may have accumulated on the sides of the free layer and barrierspacer layer. A pixel defining layer may be formed on the first electrode to define a plurality of pixel regions. Specifically, the method of the current invention includes the steps of attaching adhesive means to one surface of a reinforced substrate, forming a seed layer on the adhesive means and forming a circuit pattern on the seed layer, laminating an insulating layer on the circuit pattern and removing the reinforced substrate, and removing the seed layer.