# US 10,479,932 B2 · Phosphor composition, light-emitting device package including same, and lighting device

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- Number: US 10,479,932 B2
- Document ID: US10479932B2
- Status: Granted
- Kind: B2
- Application number: 16/097,349
- Filed: 2017-04-28
- Published: 2019-05-09
- Granted: 2019-11-19
- Earliest claimed: 2016-04-29
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Ji Wook Moon; Woo Seuk Song; Seung Jae Lee; Jin Sung Kim
- Web page: https://patentgrep.com/patent/US10479932B2

## CPC

- C09K 11/59: containing silicon
- C09K 11/0883: {Arsenides; Nitrides; Phosphides}
- C09K 11/61: containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
- C09K 11/616: {with alkali or alkaline earth metals}
- C09K 11/617: {Silicates}
- C09K 11/77: containing rare earth metals
- C09K 11/77348: {Silicon Aluminium Nitrides or Silicon Aluminium Oxynitrides}
- F21S 2/00: Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
- H10H 20/83: Electrodes
- H10H 20/85: Packages
- H10H 20/8513: {having two or more wavelength conversion materials}
- H10H 20/854: characterised by their material, e.g. epoxy or silicone resins
- Y02B 20/00: Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

According to an embodiment, a phosphor composition and a light-emitting device package including the same includes a first phosphor excited by an excited light source so as to emit light of a first wavelength area; a second phosphor excited by the excited light source so as to emit light of a second wavelength area; and a third phosphor excited by the excited light source so as to emit light of a third wavelength area. Therefore, light emitted from the phosphor composition has an improved color rendering index due to an increase in the intensity of light in a cyan wavelength area, and has an improved light velocity due to a shortened wavelength of light in a red wavelength area.

## Claims

### Claim 1

A phosphor composition comprising: a first phosphor excited by the excitation light source to emit light in a first wavelength range;
a second phosphor excited by the excitation light source to emit light in a second wavelength range; and
a third phosphor that is excited by the excitation light source and emits light in a third wavelength range,
wherein the third phosphor includes at least one of a nitride-based fluorescent material and a silicate-based fluorescent material,
the silicate-based fluorescent material comprises K2Si1-xF6:Mn4+x, wherein the first wavelength region, the second wavelength region, and the third wavelength region are different each other, and
wherein the first phosphor is a blue-green phosphor.

### Claim 2 (depends on 1)

The phosphor composition according to claim 1, wherein an emission center wavelength of the first phosphor is from 490 nm to 505 nm.

### Claim 3 (depends on 1)

The phosphor composition according to claim 1, wherein an emission center wavelength of the second phosphor is 515 nm to 570 nm.

### Claim 4 (depends on 1)

The phosphor composition according to claim 1, wherein an emission center wavelength of the third phosphor is from 580 nm to 670 nm.

### Claim 5 (depends on 1)

The phosphor according to claim 1, wherein the first phosphor comprises one of represented by the formula (Ba, Mg)3-aSi6-bO3.5-cN8.5-d(Li, Cl, F, P)1-e:Eu2+a, (Ba, Mg, Ca, Sr)3-aSi6O3N8:Eu2+a and (Ba, Mg, Ca, Sr)1-aSi2O2N2:Eu2+a.

### Claim 6 (depends on 1)

The phosphor according to claim 1, wherein the second phosphor is at least one selected from the group consisting of (Lu, Y, Gd)3-x(Al, Ga)5O12:Ce3+xLa3-xSi6N11:Ce3+x.

### Claim 7 (depends on 1)

The phosphor according to claim 1, wherein the third phosphor is at least one selected from the group consisting of (Ca, Sr)1-xAlSiN3:Eu2+x, (Ca)1-xAlSiN3:Eu2+x, Sr2-xSi5N8:Eu2+x and (Ba, Sr)2-xSi5N8:Eu2+x.

### Claim 8 (depends on 7)

The phosphor according to claim 7, wherein a weight ratio of the first phosphor is from 1 wt % to 10 wt %, a weight ratio of the second phosphor is from 35 wt % to 55 wt %, the (Ca, Sr)1-xAlSiN3:Eu2+x of the third phosphor is a weight ratio of 1 wt % to 10 wt %, and K2Si1-xF6:Mn4+x of the third phosphor is a weight ratio of 40 wt % to 60 wt %.

### Claim 9 (depends on 1)

A light emitting device package comprising:
a body portion;
a first electrode portion and a second electrode portion disposed on the body portion;
a light emitting device disposed on the body portion and electrically connected to the first electrode portion and the second electrode portion; and
a molding portion around the light emitting device and including the phosphor composition of claim 1.

### Claim 10 (depends on 9)

The light emitting device package according to claim 9, wherein the phosphor composition is contained in the molding part in a weight ratio of 65 wt % to 85 wt %.

### Claim 11 (depends on 9)

The light emitting device package according to claim 9, wherein the light emitting device package emits white light.

### Claim 12 (depends on 9)

A lighting device comprising the light emitting device package of claim 9 as a light source.

### Claim 13 (depends on 1)

The phosphor according to claim 1, wherein the first phosphor emits cyan light of the first wavelength range.

### Claim 14 (depends on 1)

The phosphor according to claim 1, wherein the first phosphor comprises an oxynitrides blue-green phosphor.

### Claim 15 (depends on 1)

The phosphor according to claim 1, wherein the first phosphor comprises a silicate blue-green phosphor.

### Claim 16 (depends on 1)

The phosphor according to claim 1, wherein the third phosphor comprises both (Ca, Sr)1-xAlSiN3:Eu2+x red phosphor and KSF red phosphor.

### Claim 17 (depends on 16)

The phosphor according to claim 16, wherein the KSF red phosphor is K2Si1-xF6:Mn4+x.

### Claim 18 (depends on 9)

The light emitting device package according to claim 9, wherein the third phosphor comprises both (Ca, Sr)1-xAlSiN3:Eu2+x red phosphor and KSF red phosphor.

### Claim 19 (depends on 18)

The light emitting device package according to claim 18, wherein the first phosphor emits cyan light of the first wavelength range.

### Claim 20 (depends on 12)

The lighting device according to claim 12, wherein the third phosphor comprises both (Ca, Sr)1-xAlSiN3:Eu2+x red phosphor and KSF red phosphor.