发明名称 |
PHASE-CHANGE MEMORY DEVICE CAPABLE OF MAINTAINING CONSTANT RESISTANCE RANGE AND METHOD THEREOF |
摘要 |
A phase-change memory device is provided, which can maintain contact resistance range even though the size of a contact area of a phase-change material and a bottom contact differs in unit cells. A write driver(720) receives data and applies the data to a phase-change memory cell, and applies a sub write current to the phase-change memory cell in response to a first or the nth current control signal. A data sensing part(730) outputs a logic value of the data stored in the phase-change memory cell as a cell data signal by sensing the stored data. A comparison part(740) judges whether the data applied to the phase-change memory cell is equal to the data stored in the phase-change memory cell in response to the cell data signal. And a pulse control unit(750) generates the first or the nth current control signal in response to the detection signal and the pulse signal. A latch unit(760) latches the data applied to the phase-change memory cell.
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申请公布号 |
KR20050030294(A) |
申请公布日期 |
2005.03.30 |
申请号 |
KR20030066504 |
申请日期 |
2003.09.25 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHO, BEAK HYUNG;CHO, WOO YEONG;CHOI, BYUNG GIL;OH, HYUNG ROK |
分类号 |
G11C13/00;G11C13/02;G11C16/02;G11C16/34;H01L27/105;H01L45/00;(IPC1-7):G11C13/02 |
主分类号 |
G11C13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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