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In-plane switching transflective liquid crystal display device with the pixel electrode elecrically coupled to the active element in a portion defining a clearance between the first electrodes for the transmission and reflective sections

  • US 7,826,015 B2
  • Filed: 04/05/2007
  • Issued: 11/02/2010
  • Est. Priority Date: 04/12/2006
  • Status: Active Grant
First Claim
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1. A liquid crystal display device including a liquid crystal display panel, comprising:

  • a first substrate, the first substrate including;

    an active element;

    a first insulating film formed on the active element;

    a plurality of first electrodes disposed on the first insulating film;

    a second insulating film disposed on the first electrodes; and

    a pixel electrode disposed on the second insulating film;

    a second substrate; and

    liquid crystal interposed between the first and second substrates,wherein the liquid crystal display panel has a plurality of subpixels;

    each of the plurality of subpixels has a transmission section and a reflection section;

    the pixel electrode is shared by the transmission section and the reflection section in each of the subpixels;

    the first electrodes are divided into a first electrode for the transmission section in the transmission section and a first electrode for the reflection section in the reflection section;

    the first electrode for the transmission section and the first electrode for the reflection section being insulated from each other;

    a voltage different from the first electrode for the reflection section is applied to the first electrode for the transmission section;

    the pixel electrode is electrically coupled to the active element via a portion defining a contact hole formed in a portion defining a clearance between the first electrode for the transmission section and the first electrode for the reflection section in each of the subpixels.

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