Plasma panel with low-scatter screen
AssigneeThomson Tubes Electroniques
InventorsOlivier Hamon, Andreas Oppenlander
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Abstract
It is sought to improve the image contrast of plasma panel type display screens. A plasma panel comprises a front plate (D1) bearing photoluminescent elements (LB1, LV1) constituted by grains (GL1, GLn) of luminophor material. According to one characteristic, the grains (GL1, GLn) have a diameter of less than 1.5 micrometer. This, in relation to the prior art, constitutes a substantial reduction of the diameter of the luminophor grains, which leads to reducing the coefficient of reflectance, the result of which is an improvement of the contrast of the image.
Claims8
A plasma panel display device comprising a front plate and a back plate between which a gaseous base is formed, said front plate having at least one photoluminescent layer which is constituted by grains of luminophor materials each having a diameter of less than 1.5 .mu.m, a thickness of said at least one photoluminescent layer being approximately two to three times as great as said diameter of said grains of luminophor materials.
Dependencies are inferred from the claim text.