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Display device and manufacturing method thereof

  • US 9,117,732 B2
  • Filed: 10/16/2014
  • Issued: 08/25/2015
  • Est. Priority Date: 01/24/2010
  • Status: Active Grant
First Claim
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1. A liquid crystal display device comprising a pixel, the pixel comprising:

  • a transistor; and

    a liquid crystal element electrically connected to the transistor,wherein the transistor comprises;

    a gate electrode;

    a first insulating layer over the gate electrode;

    an oxide semiconductor layer over the first insulating layer;

    a source electrode and a drain electrode over the oxide semiconductor layer; and

    a second insulating layer over the source electrode and the drain electrode,wherein the transistor has a characteristic that a current flowing between the source electrode and the drain electrode is lower than 10 zA/μ

    m at room temperature when a voltage of 3.1 V is applied between the source electrode and the drain electrode, andwherein the current is normalized by a channel width of the transistor.

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