Display device and electronic device including the same
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United States of America Patent
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Apr 30, 2013
Grant Date -
Jun 9, 2011
app pub date -
Dec 1, 2010
filing date -
Dec 4, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A low-power-consuming display device including a liquid crystal material which exhibits a blue phase is provided. A display device includes a first substrate having a pixel portion in which a pixel including a transistor is provided; a second substrate which faces the first substrate; and a liquid crystal layer between the first substrate and the second substrate; in which the liquid crystal layer includes a liquid crystal material which exhibits a blue phase; a gate of the transistor is electrically connected to a scan line, one of a source and a drain of the transistor is electrically connected to a signal line, and the other of the source and the drain of the transistor is electrically connected to an electrode; and the transistor includes an oxide semiconductor layer a hydrogen concentration of which is 5×1019/cm3 or less.
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