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AssigneesNoritake Itron Corporation, Noritake Co., Limited
InventorKoji Kato
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In order to provide a phosphor for a low-voltage electron beam and a vacuum fluorescent display apparatus in which the phosphor is used, a deposition layer is formed on a surface of a main body of a phosphor shown by the following chemical formula (1), the deposition layer being a plurality of oxide layers sequentially deposited on the surface of the phosphor main body. The phosphor for a low-voltage electron beam contains no cadmium, but has exceptional high-temperature exposure characteristics, as well as prolonged service life and higher brightness. Ca1-xSrxTiO3:Pr,M (1) where M is at least one element selected from Al, Ga, In, Mg, Zn, Li, Na, K, Gd, Y, La, Cs, and Rb; and 0≦x≦1.
A phosphor for a low-voltage electron beam device having a coated deposition layer formed on the phosphor shown by the following chemical formula (1), CaTiO3:Pr,M (where M is at least one element selected from Al, Ga, In, Mg, Zn, Li, Na, K, Gd, Y and La),
Dependencies are inferred from the claim text.