发明名称 MULTI-LEVEL PHASE CHANGE MEMORY DEVICE AND WRITE METHOD THEREOF
摘要 In a memory device and in a method of programming the same, a memory device comprises: a plurality of memory cells, each memory cell comprising a resistance-changeable material that has an initial resistance that is determined in response to an applied programming current in a programming operation; and a modification circuit that modifies the resistance of the memory cell following a programming operation of the memory cell to vary the resistance of the memory cell from the initial resistance to a second resistance by applying a saturation current in a saturation operation. Each memory cell is connected to a conduction line of the memory device that is used to apply the programming current to program the resistance of the corresponding memory cell in the programming operation, that is used to apply the saturation current to the corresponding memory cell in the saturation operation and that is used to apply a read current to read the resistance of the corresponding memory cell in a subsequent read operation.
申请公布号 KR101308549(B1) 申请公布日期 2013.09.13
申请号 KR20070070161 申请日期 2007.07.12
申请人 发明人
分类号 G11C16/04;G11C16/30;G11C16/34 主分类号 G11C16/04
代理机构 代理人
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