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Display Device

  • US 10,367,006 B2
  • Filed: 02/09/2017
  • Issued: 07/30/2019
  • Est. Priority Date: 10/03/2008
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a pixel portion;

    a protective circuit comprising a first transistor and a second transistor, each of the first transistor and the second transistor comprising;

    a gate electrode;

    a gate insulating layer over the gate electrode;

    a first oxide semiconductor layer over the gate insulating layer;

    a first electrode and a second electrode over the first oxide semiconductor layer; and

    a second oxide semiconductor layer provided between the first oxide semiconductor layer and the first electrode;

    a first wiring electrically connected to the first electrode of the first transistor, the gate electrode of the first transistor, and the first electrode of the second transistor; and

    a second wiring electrically connected to the second electrode of the first transistor, the gate electrode of the second transistor, and the second electrode of the second transistor,wherein the pixel portion is electrically connected to the protective circuit, andwherein the first oxide semiconductor layer comprises indium, gallium, and zinc.

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