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Color picture tube with the fluorescent film of the red emission component having a mixture of europium activated rare earth oxide phosphors
Color picture tube with the fluorescent film of the red emission component having a mixture of europium activated rare earth oxide phosphors
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机译:彩色显像管,其红色发射成分的荧光膜具有fluorescent活化的稀土氧化物磷光体的混合物
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摘要
The object of the present invention is to provide a color picture tube, which has a fluorescent film of a red emission component exhibiting a red emission with a deep color tone and is excellent in emission brightness. This object can effectively be accomplished by a color picture tube, having a face plate on which dot-shaped or stripe- shaped fluorescent films of blue, green and red emission components are respectively formed, characterized in that the fluorescent film of the red emission component is formed of a red emission composition comprising a mixture of an europium activated rare earth element oxide phosphor having an x value of 0.630 to 0.652 in CIE Chromaticity Representation and an europium activated rare earth element oxysulfide phosphor having an x value of 0.652 to 0.674 in CIE Chromaticity Representation, the red composition having an x of 0.647 to 0.662 in CIE Chromaticity Representation.
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