Method for preparing fluorescent powder for plasma display device and phosphor slurry
A technology of plasma display and phosphor, which is applied in the field of phosphor paste, can solve problems such as brightness drop, and achieve the effects of improving heat resistance, brightness deterioration, prolonging service life, and stabilizing performance
Inactive Publication Date: 2011-01-05
IRICO
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Problems solved by technology
Aiming at the shortcomings of the above BAM blue phosphors that cause a serious decrease in brightness with the heat treatment process and ultraviolet radiation aging, the present invention uses a high-temperature solid-state reaction method to prepare a new type of blue phosphor material MgSrAl10O17: Eu2+ (MSA: Eu2+). Compared with BAM, the material provides more stable heat-resistant luminescence performance and anti-ultraviolet aging performance
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Abstract
The invention relates to a method for preparing fluorescent powder used on plasma panel displays: a blue fluorescent powder material is MgSrAl10O17 : Eu<2+>, which is prepared by adopting the solid phase reaction process, the raw materials are analytically pure or chemically pure SrCO3, MgCO3 and Al2O3 as well as Eu2O3 with the purity of 99.99%, which are weighed preciously as per the raw material ratio that atomic mol ratio of Sr, Mg, Al and Eu is 1 : 1 : 10 : 0.005; ball-milling process is adopted for full mixing, then a high temperature sintering furnace is adopted for sintering, after sintering is finished, the sintering result is milled by the ball-milling process, and the blue fluorescent powder grains with the granularity distribution of 1-5 micro are obtained.
Description
Preparation method and phosphor paste for plasma display phosphor technical field The invention relates to a phosphor slurry capable of emitting light with high efficiency, in particular to a method for preparing a phosphor powder used in a plasma display and the phosphor slurry. Background technique Plasma display is a flat panel display device that uses gas discharge to emit light. The barrier structure in the plasma display screen forms tiny discharge cells, and a large number of plasma discharge cells are arranged together to form a display screen. When a high voltage is applied between the upper and lower electrodes, the gas in the plasma tube chamber sealed between the two layers of glass will generate ultraviolet light, thereby stimulating the red (Red), green (Green), and blue (Blue) three primary color phosphors in the barrier chamber to emit Visible light, combined by the light and dark and color changes of these pixels, produces vivid, bright, clean, clear imag...
Claims
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IPC IPC(8): C09K11/80C01F7/02
Inventor 刘震
Owner IRICO