Patent ID: 7088315

Claim:
A plasma display device comprising a plasma panel and a driving circuit for driving said plasma panel, said plasma panel being provided with a plurality of discharge cells, each of said plurality of discharge cells comprising: at least an X electrode and a Y electrode for producing a display discharge; a dielectric film for covering said X electrode and said Y electrode at least partially; a discharge gas filled in a discharge space; and a phosphor for emitting visible light by being excited by ultraviolet rays produced by discharge of said discharge gas, wherein Vsemax is in a range of from 200 V to 1000 V, where Vsemax is a maximum of an absolute value of a voltage difference between said X electrode and said Y electrode during a display period when display-discharge pulses are applied to said X electrode and said Y electrode for producing said display discharge; wherein in said plasma panel, a display discharge region area ratio Ad satisfies 0.05 ≦Ad≦ 0.4, where, in said plasma panel, a display surface is a surface from which visible light for display is irradiated, a viewing space is a space into which the visible light for display is irradiated from said display surface, a display space is a space containing said plurality of discharge cells arranged continuously, a display region Rp is a projection of said display space onto said display surface, Sp is an area of said display region Rp, a display discharge space is a portion of said discharge space where said display discharge is produced, a display discharge region is a projection of said display discharge space onto said display surface, Rd denotes a collection of said display discharge regions in said display region Rp, Sd is an area of said collection Rd; and Ad=Sd/Sp; and wherein in at least some of said plurality of discharge cells, a ratio of an energy of light emitted from a non-display discharge region to an energy of white light is equal to or smaller than 0.2 when said white light is entered into said non-display discharge region from said viewing space, where a cell region is a projection of one of said plurality of discharge cells onto said display surface, and a non-display discharge region is a portion of said cell region other than said display discharge region.