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Plasma display panel including frameless EMI filter, and/or method of making the same

  • US 8,147,975 B2
  • Filed: 11/06/2008
  • Issued: 04/03/2012
  • Est. Priority Date: 08/21/2008
  • Status: Active Grant
First Claim
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1. A plasma display device comprising:

  • a plasma display panel (PDP); and

    an electromagnetic interference (EMI) filter provided at a front portion of the plasma display panel, the EMI filter including an EMI coating supported by a glass substrate, the EMI coating including the following layers moving away from the glass substrate;

    a first high index layer having a refractive index (n) of at least about 2.2 located on and directly contacting the glass substrate;

    a first layer comprising silicon nitride;

    a first layer comprising zinc oxide;

    a first EMI shielding layer comprising silver contacting the first layer comprising zinc oxide;

    a first layer comprising an oxide of Ni and/or Cr contacting the first EMI shielding layer comprising silver;

    a first layer comprising metal oxide;

    a second layer comprising silicon nitride;

    a second layer comprising zinc oxide;

    a second EMI shielding layer comprising silver contacting the second layer comprising zinc oxide;

    a second layer comprising an oxide of Ni and/or Cr contacting the second EMI shielding layer comprising silver;

    a second layer comprising metal oxide;

    a third layer comprising silicon nitride;

    a second high index layer having a refractive index (n) of at least about 2.2;

    a third layer comprising zinc oxide;

    a third EMI shielding layer comprising silver contacting the third layer comprising zinc oxide;

    a third layer comprising an oxide of Ni and/or Cr contacting the third EMI shielding layer comprising silver; and

    an overcoat layer comprising a transparent conducting oxide (TCO),wherein the EMI filter has a sheet resistance of less than about 1 ohm,wherein the third EMI shielding layer comprising silver is thicker than each of the first and second EMI shielding layers comprising silver.

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