WHITE LIGHT LED, AND BACKLIGHT AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME

摘要

A white LED 1 includes a light emitting element 20 with a light emission peak wavelength equal to or longer than 380 nm and equal to or shorter than 420 nm, and a phosphor layer 40 containing three or more types of phosphors including at least a blue phosphor B, a green phosphor G, and a red phosphor R and disposed in a manner to cover at least part of the light emitting element 20. The phosphor layer 40 has a first phosphor layer 41 and a second phosphor layer 42 disposed in an opposite side of a side of the light emitting element 20 of the first phosphor layer 41. In the first phosphor layer 41, a content of the blue phosphor B in an entire phosphor contained in the first phosphor layer 41 is equal to or less than 5 mass%, or the blue phosphor B is not contained. In the second phosphor layer 42, a content of phosphor other than the blue phosphor B in an entire phosphor contained in the second phosphor layer 42 is equal to or less than 5 mass%, or no phosphor other than the blue phosphor B is contained.