Patent ID: 7221083
Filing Date: 2007-05-22
Classification: C09K,H01J

Abstract:
1. A light emitting device comprising: at least one pair of electrodes; a discharge gas for emitting ultraviolet light as a result of discharge upon application of a voltage between the at least one pair of electrodes; and at least one phosphor layer for emitting light as a result of excitation by the ultraviolet light emitted by the discharge gas, wherein the discharge gas contains xenon (Xe) gas in a mole fraction of 6 percent or more, wherein the at least one phosphor layer comprises, as a phosphor component thereof, at least an Eu-activated silicate phosphor capable of being excited by ultraviolet light emitted as a result of discharge of the xenon gas to thereby emit light and represented by following Formula (I): wherein M1 is at least one element selected from the group consisting of Sr, Ca and Ba; and a, b, c, d and e are mole fractions and satisfy the following conditions: 0.8≦a≦1.2, 0.8≦b≦1.2, 0.8≦c≦1.2, 0.8≦d≦1.2, and 0.001≦e≦0.2, and wherein the light emitting device has a plasma display panel structure.