Patent ID: 7713633

Claim:
A plasma display device comprising: a plasma display panel; 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 layer comprising silicon nitride; a first high index layer having a refractive index (n) of at least about 2.2; 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 metal oxide layer; 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 metal oxide layer; 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; a third metal oxide layer; an overcoat layer; and wherein the third EMI shielding layer comprising silver is thicker by at least 2 nm than the first EMI shielding layer comprising silver.