发明名称 |
Semiconductor memory device and drive method therefor |
摘要 |
The semiconductor memory device of the invention includes at least three memory cell blocks arranged in a word line direction. Each of the memory cell blocks includes a plurality of memory cells arranged in a bit line direction. Each of the memory cells includes a ferroelectric capacitor for storing data by displacement of polarization of a ferroelectric film and a selection transistor connected to one of paired electrodes of the ferroelectric capacitor. Each of the memory cell blocks also includes: a bit line, a sub-bit line and a source line extending in the bit line direction; and a read transistor having a gate connected to one end of the sub-bit line, a source connected to the source line, and a drain connected to one end of the bit line. The read transistor reads data by detecting the displacement of the polarization of the ferroelectric film of the ferroelectric capacitor of a data read memory cell from which data is read among the plurality of memory cells. The sub-bit lines of any two of the memory cell blocks are connected to each other via a sub-bit line coupling switch.
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申请公布号 |
US2003185042(A1) |
申请公布日期 |
2003.10.02 |
申请号 |
US20030392843 |
申请日期 |
2003.03.21 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KATO YOSHIHISA;SHIMADA YASUHIRO;YAMADA TAKAYOSHI |
分类号 |
G11C11/22;(IPC1-7):G11C11/22 |
主分类号 |
G11C11/22 |
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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