Patent ID: 6949872

Claim:
A plasma display panel, comprising: an upper glass substrate; a sustain electrode formed on a certain portion of the upper glass substrate; a bus electrode formed at a certain portion on the sustain electrode; a lower glass substrate; a lower insulation film formed on the lower glass substrate; an address electrode formed at a certain portion on the lower insulation film; a lower dielectric layer formed on the address electrode and the lower insulation film; a barrier rib defined at a certain portion on the lower dielectric layer in order to divide discharge cells; and a fluorescent layer formed on the lower dielectric layer and emitting a visible light of red, green and blue upon receiving an ultraviolet ray, an electro-optic filter formed on the upper glass substrate of the plasma display panel selectively blocks light emitted from the discharge cells of the plasma display panel during a preliminary discharge, wherein the electro-optic filter comprises: a first polarizer transmitting a light emitted from the discharge cell and having a first polarization direction; a PLZT (lead lanthanum zirconium titanate) plate positioned on the first polarizer selectively diffracting the light transmitted through the first polarizer on the basis of an electric signal; and a second polarizer receiving light transmitted through the PLZT plate and having a second polarization direction.