Semiconductor device and manufacturing method thereof
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United States of America Patent
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Mar 20, 2018
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N/A
app pub date -
Jan 11, 2017
filing date -
Jan 15, 2016
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Abstract
A highly reliable semiconductor device suitable for miniaturization and high integration is provided. The semiconductor device includes a first transistor, a first insulator over the first transistor, a second transistor over the first insulator, a second insulator over the second transistor, and a capacitor over the second insulator. The first insulator has a barrier property against oxygen and hydrogen. The second transistor includes an oxide semiconductor. The second insulator includes an oxygen-excess region. The capacitor includes a first electrode, a second electrode, and a dielectric between the first electrode and the second electrode. The dielectric includes a third insulator having a barrier property against oxygen and hydrogen. The first insulator and the third insulator are in contact with each other on an outer edge of a region where the second transistor is located so that the second transistor and the second insulator are enclosed by the first insulator and the third insulator.
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