发明名称 |
METHOD FOR DRIVING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE |
摘要 |
To read multilevel data from a memory cell having a transistor using silicon and a transistor using an oxide semiconductor, without switching a signal for reading the multilevel data in accordance with the number of the levels of the multilevel data. The potential of the bit line is precharged, the electrical charge of the bit line is discharged via a transistor for writing data, and the potential of the bit line which is changed by the discharging is read as multilevel data. With such a structure, the potential corresponding to data held in a gate of the transistor can be read by only one-time switching of a signal for reading data. |
申请公布号 |
WO2014142043(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
WO2014JP56088 |
申请日期 |
2014.03.04 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
NAGATSUKA, SHUHEI;INOUE, HIROKI;ISHIZU, TAKAHIKO;MATSUZAKI, TAKANORI;SHIONOIRI, YUTAKA;KATO, KIYOSHI |
分类号 |
G11C11/405;G11C11/56;H01L21/8242;H01L27/108;H01L29/786 |
主分类号 |
G11C11/405 |
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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