C09K11/7707

Light emitting device
10559725 · 2020-02-11 · ·

A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.

Light emitting device
10505081 · 2019-12-10 · ·

A light emitting device, comprising a light emitting element having a peak emission wavelength in a range of from 440 nm to 460 nm, and a phosphor member. The phosphor member contains: a first phosphor having a peak emission wavelength in a range of from 440 nm to 550 nm and comprising at least one selected from the group consisting of an Eu-activated alkaline earth aluminate or an Eu-activated silicate containing Ca, Mg, and Cl; a second phosphor having a peak emission wavelength in a range of from 500 nm to 600 nm and comprising a Ce-activated rare earth aluminate; a third phosphor having a peak emission wavelength in a range of from 610 nm to 650 nm and comprising an Eu-activated silicon nitride containing Al and at least one selected from the group consisting of Sr and Ca; and a fourth phosphor having a peak emission wavelength in a range of from 650 nm to 670 nm and comprising a Mn-activated fluorogermanate.

Light-emitting device package and lighting device
10454002 · 2019-10-22 · ·

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.

PHOSPHOR, METHOD FOR PREPARING PHOSPHOR, OPTOELECTRONIC COMPONENT, AND METHOD FOR PRODUCING OPTOELECTRONIC COMPONENT

The present invention relates to a phosphor, a method for preparing the phosphor, an optoelectronic component, and a method for producing the optoelectronic component. The phosphor has the following general formula: La.sub.3(1x)Ga.sub.1yGe.sub.5(1z)O.sub.16: 3xA.sup.3+, yCr.sup.3+, 5zB.sup.4+, where x, y, and z do not equal to 0 simultaneously; A represents at least one of Gd and Yb; B represents at least one of Sn, Nb, and Ta. For the phosphor, its emission spectrum is within a red visible light region and a near-infrared region when excited by blue visible light, purple visible light or ultraviolet light; and it has a wide reflection spectrum and a high radiant flux. Therefore, it can be used in optoelectronic components such as LEDs to meet requirements of current medical testing, food composition analysis, security cameras, iris/facial recognition, virtual reality, gaming notebook and light detection and ranging applications.

LIGHT EMITTING DEVICE
20190181308 · 2019-06-13 · ·

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.

Light emitting device
10256374 · 2019-04-09 · ·

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.

LIGHT EMITTING DEVICE
20190067531 · 2019-02-28 · ·

A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.

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)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.

LIGHT EMITTING DEVICE
20190013448 · 2019-01-10 · ·

A light emitting device, comprising a light emitting element having a peak emission wavelength in a range of from 440 nm to 460 nm, and a phosphor member. The phosphor member contains: a first phosphor having a peak emission wavelength in a range of from 440 nm to 550 nm and comprising at least one selected from the group consisting of an Eu-activated alkaline earth aluminate or an Eu-activated silicate containing Ca, Mg, and Cl; a second phosphor having a peak emission wavelength in a range of from 500 nm to 600 nm and comprising a Ce-activated rare earth aluminate; a third phosphor having a peak emission wavelength in a range of from 610 nm to 650 nm and comprising an Eu-activated silicon nitride containing Al and at least one selected from the group consisting of Sr and Ca; and a fourth phosphor having a peak emission wavelength in a range of from 650 nm to 670 nm and comprising a Mn-activated fluorogermanate.

Light emitting device
10141484 · 2018-11-27 · ·

A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.