H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 29/20 (2006.01) C09K 11/02 (2006.01) C09K 11/77 (2006.01) C09K 11/78 (2006.01) C09K 11/84 (2006.01) H01J 29/32 (2006.01)
Patent
CA 2082961
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 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 the same representation, in mixture, the said composition having an x of 0.647 to 0.662 in the same representation.
Naito Masaru
Tono Hideo
Kasei Optonix Ltd.
Riches Mckenzie & Herbert Llp
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