Patent ID: 7649310
Filing Date: 2010-01-19
Classification: C09K,G02F,H01L

Abstract:
1. A white LED comprising: an ultraviolet emitting diode or a purple light emitting diode; and phosphors for emitting visible lights including blue light, green light and red light; wherein an emission spectrum of said white LED has: a first luminescence peak in a blue light region having a wavelength of 440-460 nm; a second luminescence peak in a green light region having a wavelength of 510-530 nm; and a third luminescence peak in a red light region having a wavelength of 620-640 nm, wherein said phosphor for emitting blue color light is an europium activated halo-phosphate phosphor expressed by a general formula 1: (Sr wherein said phosphor for emitting green color light is an europium and manganese activated aluminate phosphor expressed by a general formula 2: (Ba wherein said phosphor for emitting red color light is an europium activated lanthanum oxysulfide phosphor expressed by a general formula 3: (La