A phase change memory device includes a memory array including a plurality of phase change memory cells, each phase change memory cell including a phase change material and a diode, a plurality of column selection transistors connecting bit lines connected to the phase change memory cells to corresponding...http://www.google.fr/patents/US7283387?utm_source=gb-gplus-shareBrevet US7283387 - Phase change random access memory device having variable drive voltage circuit
Phase change random access memory device having variable drive voltage circuit