Fish & Richardson P.C.
Semiconductor device and driving method thereof
A semiconductor device including a nonvolatile memory cell in which a writing transistor which includes an oxide semiconductor, a reading transistor which includes a semiconductor material different from that of the writing transistor, and a capacitor are included is provided. Data is written to the memory cell by turning on the writing transistor and applying a potential to a node where a source electrode (or a drain electrode) of the writing transistor, one electrode of the capacitor, and a gate electrode of the reading transistor are electrically connected, and then turning off the writing transistor, so that the predetermined amount of charge is held in the node. Further, when a p-channel transistor is used as the reading transistor, a reading potential is a positive potential.
Semiconductor Energy Laboratory Co., Ltd.
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inventional inventional inventional inventional inventional additional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional
Takanori Kiyoshi Hiroki Shuhei
Matsuzaki Kato Inoue Nagatsuka