| 简介 |
Disclosed is a white LED for a backlight of a liquid crystal display device, which comprises an ultra violet (or violet) light-emitting element and a phosphor layer that contains a green phosphor selected from among trivalent cerium- or terbium-activated rare earth boride phosphors, a blue phosphor selected from among divalent europium-activated halophosphate phosphors and divalent europium-activated aluminate phosphors, and a red phosphor selected from among europium-activated lanthanum oxysulfide phosphors and europium-activated yttrium oxysulfide phosphors. The contents of the respective phosphors relative to the total weight of the phosphors are as follows : the green phosphor content is 35-50% by weight; the blue phosphor content is 50-70% by weight; and the red phosphor content is 1-10% by weight. |
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