Patent ID: 8147975

Claim:
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.