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Liquid crystal display device

  • US 8,842,230 B2
  • Filed: 06/04/2013
  • Issued: 09/23/2014
  • Est. Priority Date: 07/06/2007
  • Status: Expired due to Fees
First Claim
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1. A liquid crystal display device comprising;

  • a substrate,a transistor over the substrate, the transistor comprising a gate electrode, a gate insulating layer over the gate electrode, a first semiconductor layer over the gate insulating layer, a source region and a drain region over the first semiconductor layer, a source electrode over the source region and a drain electrode over the drain region;

    a first electrode over the substrate;

    an insulating layer over the first electrode and the transistor; and

    a second electrode over the insulating layer and connected to one of the source electrode and the drain electrode,wherein the source region and the drain region comprise a semiconductor layer including an impurity element imparting one conductivity type and comprising a microcrystalline semiconductor,wherein the second electrode has a first slit and a second slit and overlaps with the first electrode,wherein the first slit extends in a different direction from which the second slit extends,wherein the source and drain regions extend beyond outer side edges of the source and drain electrodes,wherein a thickness of a first portion of the first semiconductor layer between the source region and the drain region is smaller than a second portion of the first semiconductor layer, andwherein the first semiconductor layer extends beyond outer side edges of the source and drain regions.

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