C09K11/7707

LIGHT-EMITTING DEVICE PACKAGE AND LIGHTING DEVICE
20180323349 · 2018-11-08 ·

An embodiment relates a light-emitting device package and a lighting device. A light-emitting device package according to an embodiment may include a package body 11, a light-emitting device 25 disposed on the package body 11, a molding member 41 disposed on the light-emitting device 25, and a phosphor 30 disposed in the molding member 41. An energy ratio of a first wavelength range of 415 nm to 455 nm of the light-emitting device may be 75% or less of energy of a sunlight source having the first wavelength range. An energy ratio of a second wavelength range of 465 nm to 495 nm of the light-emitting device may be 60% or more of energy of a sunlight source having the second wavelength range. Moreover, the energy ratio of the second wavelength range of 465 nm to 495 nm may be higher than the energy ratio of a first wavelength range of 415 nm to 455 nm in the light-emitting device. The phosphor 30 may include a first phosphor 31 which is a green phosphor and a second phosphor 32 which is a red phosphor, thereby implementing a white light source with an emission wavelength of the light-emitting device 25 as an excitation wavelength.

OXIDE FLUORESCENT MATERIAL AND LIGHT EMITTING DEVICE USING THE SAME
20250002781 · 2025-01-02 · ·

An oxide fluorescent material has a composition represented by the following formula (1).


(Mg.sub.1-sM.sup.1.sub.s).sub.2(Al.sub.1-tM.sup.2.sub.t).sub.u(Ge.sub.1-vM.sup.3.sub.v).sub.wO.sub.x:Cr.sub.y,M.sup.4.sub.z(1) wherein M.sup.1 represents at least one element selected from the group consisting of Ca, Sr, Ba, and Zn; M.sup.2 represents at least one element selected from the group consisting of Ga, Sc, and In; M.sup.3 represents at least one element selected from the group consisting of Si, Ti, Zr, Sn, and Hf; M.sup.4 represents at least one element selected from the group consisting of Ni, Ce, Eu, Fe, Mn, Nd, Tm, Ho, Er, and Yb; and s, t, u, v, w, x, y, and z satisfy 0s1.0, 0t1.0, 1.5u2.5, 0v0.5, 3.0w6.0, 11.0x17.0, 0.005y1.0, and 0z0.5.

LIGHT EMITTING DEVICE
20170256684 · 2017-09-07 · ·

A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.

RED PHOSPHOR AND LIGHT EMITTING DEVICE INCLUDING THE SAME

A red phosphor including the composition represented by the following general formula.


(x-a)MgO.Math.(a/2)Sc.sub.2O.sub.3.Math.yMgF.sub.2.Math.cCaF.sub.2.Math.(1-b)GeO.sub.2.Math.(b/2)Mt.sub.2O.sub.3:zMn.sup.4+ where x, y, z, a, b, and c satisfy 2.0x4.0, 0<y<1.5, 0<z<0.05, 0a<0.5, 0<b<0.5, 0c<1.5, and y+c<1.5, and Mt is at least one element selected from the group consisting of Al, Ga, and In.

Red phosphor and light emitting device including the same

A red phosphor including the composition represented by the following general formula.
(xa)MgO.(a/2)Sc.sub.2O.sub.3.yMgF.sub.2.cCaF.sub.2.(1b)GeO.sub.2.(b/2)M.sub.2O.sub.3:zMn.sup.4+ where x, y, z, a, b, and c satisfy 2.0x4.0, 0<y<1.5, 0<z<0.05, 0a<0.5, 0<b<0.5, 0c<1.5, and y+c<1.5, and M is at least one element selected from the group consisting of Al, Ga, and In.