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Display device

  • US 8,269,218 B2
  • Filed: 12/03/2010
  • Issued: 09/18/2012
  • Est. Priority Date: 12/04/2009
  • Status: Active Grant
First Claim
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1. A display device comprising:

  • a first gate electrode;

    a first gate insulating film over the first gate electrode;

    an oxide semiconductor film over the first gate insulating film;

    a source electrode and a drain electrode over the oxide semiconductor film, wherein the source electrode and the drain electrode are electrically connected to the oxide semiconductor film;

    a second gate insulating film over the source electrode, the drain electrode and the oxide semiconductor film;

    a second gate electrode over the second gate insulating film;

    an organic resin film having flatness over the second gate insulating film;

    a pixel electrode over the organic resin film having flatness, wherein the pixel electrode is electrically connected to either the source electrode or the drain electrode;

    a first alignment film over and in contact with the second gate electrode and the pixel electrode;

    a liquid crystal layer over the first alignment film;

    a second alignment film over the liquid crystal layer;

    a counter electrode over the second alignment film; and

    a counter substrate over the counter electrode,wherein a concentration of hydrogen atoms contained in the oxide semiconductor film and measured by secondary ion mass spectrometry is less than 1×

    1016 cm

    3
    .

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