Patent ID: 7202603
Filing Date: 2007-04-10
Classification: H01J

Abstract:
1. A plasma display panel, comprising: a front substrate having a front surface and a rear surface; a rear substrate facing the rear surface of the front substrate; a plurality of barrier ribs to divide space between the front substrate and the rear substrate into a plurality of discharge cells; a fluorescent layer formed on side walls of the barrier ribs; a gas disposed in the discharge cell, the gas being changed into plasma during operation; an optical converter positioned over the front surface of the front substrate; and a filter set positioned over said optical converter, wherein said plasma generates ultraviolet (UV) rays, a first portion of the UV rays passing through said front substrate and thence being converted into first visible rays by said optical converter, a second portion of the UV rays being converted into second visible rays by said fluorescent layer, said second visible rays passing through said front substrate and said optical converter, and wherein said first and second visible rays pass through said filter set, wherein the optical converter is a fluorescent material formed by combining red, green, and blue fluorescent segments that emit red, green, and blue visible rays, respectively, and wherein when the thickness of the fluorescent segments is t, the thickness of the red fluorescent segment is in the range of 5 μm<t<35 μm, the thickness of the green fluorescent segment is in the range of 5 μm<t<36 μm, and the thickness of the blue fluorescent segment is in the range of 5 μm<t<37 μm. these thicknesses being different from each other.