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In plane switching liquid crystal displaying apparatus for improved luminance

  • US 6,864,939 B2
  • Filed: 12/12/2003
  • Issued: 03/08/2005
  • Est. Priority Date: 10/16/1997
  • Status: Expired due to Term
First Claim
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1. An In Plane Switching (IPS) liquid crystal displaying apparatus, comprising:

  • a Thin Film Transistor (TFT) array substrate;

    an opposite substrate opposed to said TFT array substrate; and

    liquid crystal interposed between said TFT array substrate and said opposite substrate, wherein said TFT array substrate comprises, a glass substrate, a gate insulating film formed on said glass substrate, a passivation film formed on said gate insulating film, a plurality of scanning lines configured to transmit a plurality of scanning signals and formed on said glass substrate, a plurality of signal lines configured to transmit a plurality of image signals and formed on said gate insulating film, a plurality of pixels arranged in a grid like pattern by crossing said plurality of scanning lines with said plurality of signal lines, a plurality of TFTs implementing a switching operation of said plurality of image signals based on said plurality of scanning signals, a plurality of driving electrodes formed on said passivation film and connected with said plurality of TFTs, a plurality of opposite electrodes formed on said passivation film, each of said plurality of opposite electrodes opposing each of said plurality of driving electrodes, and a plurality of common lines configured to connect each of said plurality of opposite electrodes with each of said plurality of pixels, wherein said TFT array substrate includes at least one common line of said plurality of common lines and at least one scanning line of said plurality of scanning lines on a same layer, and at least one signal line of said plurality of signal lines provided on said gate insulating film.

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