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Liquid crystal display device and method of manufacturing the same

  • US 10,539,844 B2
  • Filed: 04/29/2015
  • Issued: 01/21/2020
  • Est. Priority Date: 04/29/2014
  • Status: Active Grant
First Claim
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1. A liquid crystal display (LCD) device comprising:

  • a plurality of pixel areas defined by intersections of a plurality of gate lines and a plurality of data lines;

    a gate disposed in a pixel area of the plurality of pixel areas, the pixel area disposed between a first data line and a second data line that is adjacent to the first data line among the plurality of data lines;

    a gate insulator disposed to cover the gate;

    a thin film transistor (TFT) configured to include the gate, a semiconductor layer having an active layer including a channel and disposed on the gate insulator, and a source disposed at a first side of the channel, and a drain disposed at a second side of the channel;

    a pixel electrode connected to the drain of the TFT and configured to supply a data voltage to the pixel area;

    a common electrode configured to supply a common voltage to the pixel area; and

    a lightly doped drain (LDD) disposed between the channel and the source and between the channel and the drain,wherein at least a portion of the LDD is disposed on the gate,wherein among the drain, the source and the channel of the semiconductor layer, only the channel extends along and overlaps a gate line of the pixel area, the gate line having a section defined from the first data line to the drain of the TFT and extending from the first data line to the drain of the TFT, andwherein the channel entirely overlaps the section of the gate line of the pixel area in parallel from the first data line to the drain of the TFT.

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