Phase change memory device with alternating adjacent conduction contacts and fabrication method thereof

Abstract

A phase change memory device and an associated method of making same are presented. The phase change memory device, includes first wiring lines, second wiring lines, memory cells, and conduction contacts. The first wiring lines are arranged substantially in parallel to each other so that the first wiring lines are grouped into odd and even numbered first wiring lines. The memory cells are coupled to the first and second wiring lines. The conduction contacts coupled to the first wiring lines so that only one conduction contact is coupled to a center of a corresponding odd numbered first wiring line. Also only two corresponding conduction contacts are coupled to opposing edges of a corresponding even numbered first wiring line. Accordingly, the conduction contacts are arranged on the first wiring lines so that conduction contacts are not adjacent to each other with respect to immediately adjacent first wiring lines.