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AssigneeKoninlijke Philips Electronics N.V.
InventorsFriederike Picht, Wolfram Czarnojan, Claus Feldmann, Hans-Otto Jungk, Jacqueline Merikhi, Roel Van De Belt, Anne M. A. Van Dongen, Alexandra J. Heijden
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A display screen, in particular a color display screen for a cathode ray tube, comprises a phosphor layer which includes a phosphor composition of a phosphor with a coating comprising a water-soluble organic binder, which is selected from the group formed by the polyurethanes, polyacrylamides, polyamide resins, etherified melamine compounds and melamine-formaldehyde compounds, and etherified urea-formaldehyde resins, and comprising oxygen compounds of one or more elements selected from the group formed by the alkaline earth elements and zinc. Important advantages obtained are a substantially improved sieving behavior of the phosphor powder, an increased adhesion of pigment particles to the phosphor grains, an improved suspension stability as well as an improved adhesion of the phosphor to the display screen glass.
A display screen comprising a phosphor layer which includes a phosphor with a coating comprising a water-soluble organic binder selected from the group consisting of polyurethanes, polyacrylamides, polyamide resins, etherified melamine compounds, melamine-formaldehyde compounds and etherified urea-formaldehyde resins, and oxygen compounds of one or more elements selected from the group consisting of alkaline earth elements and zinc.
A phosphor composition of a phosphor with a coating comprising a water-soluble organic binder, which is selected from the group consisting of polyurethanes, polyacrylamides, polyamide resins, etherified melamine compounds and melamine-formaldehyde compounds and etherified urea-formaldehyde resins, and comprising oxygen compounds of one or more elements selected from the group formed by the alkaline earth elements and zinc.
Dependencies are inferred from the claim text.