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Liquid crystal device with shorting ring and transistors for electrostatic discharge protection

  • US 5,373,377 A
  • Filed: 02/05/1993
  • Issued: 12/13/1994
  • Est. Priority Date: 02/21/1992
  • Status: Expired due to Term
First Claim
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1. A liquid crystal display device comprising:

  • an insulating substrate manifesting an insulating property at least on a surface thereof;

    a plurality of address wires formed in a display region on said insulating substrate;

    a plurality of data wires formed to intersect said address wires;

    first thin-film transistors formed one each at points of intersection of said address wires and data wires and having gate electrodes electrically connected to said address wires and drain electrodes electrically connected to said data wires;

    picture element electrodes formed one each near said points of intersection and electrically connected to the source electrodes of said first thin-film transistors; and

    a short-circuiting wire formed along at least part of a periphery of the display region of said insulating substrate and adapted to short-circuit said address wires and data wires to each other through a first resistor made of a second thin-film transistor, said short-circuiting wire formed along at least part of the periphery of the display region of said insulating substrate and being electrically connected such that a portion of said short-circuiting wire surrounds the first resistor made of the second thin-film transistor, a part of the short-circuiting wire being formed inside of the first resistor.

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