Abstract: A white light emitting device including: a blue light emitting diode (LED); a green silicate phosphor formed on the blue LED; and a red sulfide phosphor with a surface coated with a silicone oxide layer, the red sulfide phosphor formed on the blue LED.

Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.

Abstract: There is provided a method for preparing a ?-SiAlON phosphor capable of be controlled to show characteristics such as high brightness and desired particle size distribution. The method for preparing a ?-SiAlON phosphor represented by Formula: Si(6-x)AlxOyN(8-y):Lnz (wherein, Ln is a rare earth element, and the following requirements are satisfied: 0<x?4.2, 0<y?4.2, and 0<z?1.0) includes: mixing starting materials to prepare a raw material mixture; and heating the raw material mixture in a nitrogen-containing atmospheric gas, wherein the starting materials includes a host raw material including a silicon raw material including metallic silicon, and at least one aluminum raw material selected from the group consisting of metallic aluminum and aluminum compound, and at least activator raw material selected from the rare earth elements for activating the host raw material.

Abstract: A complex crystal phosphor is an inorganic composition containing at least an M element, an Al element, silicon, oxygen, and nitrogen. The inorganic composition has particles having at least two types of crystal phase, and the at least two types of crystal phase include a first crystal phase which is the same as a M2SiO4 crystal and a second crystal phase as a ?-sialon crystal. Here, M is at least one element selected from the group consisting of (Mg), calcium (Ca), strontium (Sr), and barium (Ba).

Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.

Abstract: Disclosed are a phosphor, a method for preparing and using the same, a light emitting device package, a surface light source apparatus, a lighting apparatus using the phosphor, and a display apparatus. The phosphor includes an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is a metallic element, 0<x<4, and y=2x/3.

Abstract: The present invention relates to phosphor blend for wavelength conversion and a white light emitting device using the same. The phosphor blend of the invention comprises three phosphors, A5(PO4)3Cl:Eu2+, D2SiO4:Eu and MS:Eu at a composition where near ultraviolet radiation is converted into light positioned at a CIE coordinate (x, y), where 0.25?x?0.45 and 0.25?y?0.43, wherein A comprises at least one of Sr, Ca, Ba, and Mg, D comprises at least one of Ba, Sr, and Ca, and M comprises at least one of Sr and Ca. Furthermore, the present invention provides a new white light emitting device in combination of the phosphor blend and a near ultraviolet LED.

Abstract: A white light emitting device capable of expanding the wavelength range of a blue LED used for realizing white light. The white light emitting device according to the present invention includes a blue LED and a mixture of orange phosphor and green phosphor disposed above the blue LED.

Abstract: A white light emitting device including: a blue light emitting diode (LED); a green silicate phosphor formed on the blue LED; and a red sulfide phosphor with a surface coated with a silicone oxide layer, the red sulfide phosphor formed on the blue LED.

Abstract: A white light emitting device capable of expanding the wavelength range of a blue LED used for realizing white light. The white light emitting device according to the present invention includes a blue LED and a mixture of orange phosphor and green phosphor disposed above the blue LED.

Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.

Abstract: There is provided a method for preparing a ?-SiAlON phosphor capable of be controlled to show characteristics such as high brightness and desired particle size distribution. The method for preparing a ?-SiAlON phosphor represented by Formula: Si(6-x)AlxOyN(6-y):Lnz (wherein, Ln is a rare earth element, and the following requirements are satisfied: 0<x?4.2, 0<y?4.2, and 0<z?1.0) includes: mixing starting materials to prepare a raw material mixture; and heating the raw material mixture in a nitrogen-containing atmospheric gas, wherein the starting materials includes a host raw material including a silicon raw material including metallic silicon, and at least one aluminum raw material selected from the group consisting of metallic aluminum and aluminum compound, and at least activator raw material selected from the rare earth elements for activating the host raw material.

Abstract: A white light emitting device including: a blue LE chip having a dominant wavelength of 430 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue LED chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.

Abstract: There are provided phosphors having high luminous efficiency at desired wavelengths and good light output stability and a light emitting device using the same. A phosphor according to an aspect of the invention includes a sulfide crystallographic phase and an oxide crystallographic phase. Here, the phosphor is a multiphase compound in which the sulfide crystallographic phase and the oxide crystallographic phase exist together.

Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.

Abstract: The present invention provides a phosphor blend for wavelength conversion and a white light emitting device using the phosphor blend. Further disclosed is a white light emitting phosphor blend comprising 0.5˜18 wt % of A5(PO4)3Cl:Eu2+ (where A is at least one element selected from Sr, Ca, Ba and Mg), 0.7˜14 wt of D2SiO4:Eu (where D is at least one element selected from Ba, Sr and Ca), and 68˜98.5 wt % of G5EuS(WO4)2.5+1.5S:Sm (where G is at least one element selected from Li, Na and K; and s is a number between 1 and 5), based on the total weight of the phosphor blend.

Abstract: A white light emitting device capable of expanding the wavelength range of a blue LED used for realizing white light. The white light emitting device according to the present invention includes a blue LED and a mixture of orange phosphor and green phosphor disposed above the blue LED.