Light-emitting device package and lighting device

Patent metadata

Field	Value
Publication number	US-10454002-B2
Application number	US-201715775912-A
Country	US
Kind code	B2
Filing date	May 16, 2017
Priority date	May 16, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

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.

First claim

The invention claimed is:

1. A light-emitting device package comprising:
a package body;
a light-emitting device disposed on the package body;
a molding member disposed on the light-emitting device; and
a phosphor disposed in the molding member,
wherein an energy ratio of a wavelength spectrum of the light-emitting device package in a first wavelength range of 415 nm to 455 nm is 75% or less of energy of a wavelength spectrum of a sunlight source in the first wavelength range,
an energy ratio of a wavelength spectrum of the light-emitting device package in a second wavelength range of 465 nm to 495 nm is 60% or more of energy of a wavelength spectrum of a sunlight source in the second wavelength range.

2. The light-emitting device package of claim 1 , wherein the phosphor comprises a first phosphor having a center wavelength of 515 nm to 570 nm and a second phosphor having a center wavelength of 580 nm to 670 nm, thereby implementing a white light source with an emission wavelength of the light-emitting device as an excitation wavelength,
wherein the energy ratio of the wavelength spectrum of the light-emitting device package in the second wavelength range of 465 nm to 495 nm is 100% or more of energy of the wavelength spectrum of the sunlight source in the second wavelength range.

3. The light-emitting device package of claim 1 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the second wavelength range of 465 nm to 495 nm is higher than the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the first wavelength range of 415 nm to 455 nm.

4. The light-emitting device package of claim 1 , wherein, the phosphor comprises a first phosphor having a center wavelength of 515 nm to 570 nm and a second phosphor having a center wavelength of 580 nm to 670 nm, thereby implementing a white light source with an emission wavelength of the light-emitting device as an excitation wavelength,
wherein the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the second wavelength range of 465 nm to 495 nm is higher than the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the first wavelength range of 415 nm to 455 nm.

5. A lighting device comprises the light-emitting device package of claim 1 .

6. A light-emitting device package comprising:
a package body;
a light-emitting device disposed on the package body;
a molding member disposed on the light-emitting device; and
a phosphor disposed in the molding member,
wherein
an energy ratio of a wavelength spectrum of the light-emitting device package compared with an energy of a wavelength spectrum of a sunlight source in a second wavelength range of 465 nm to 495 nm is higher than an energy ratio of a wavelength spectrum of the light-emitting device package compared with an energy of a wavelength spectrum of a sunlight source in a first wavelength range of 415 nm to 455 nm, wherein the energy ratio of the wavelength spectrum of the light-emitting device package in the second wavelength range of 465 nm to 495 nm is 60% or more of the energy of the wavelength spectrum of the sunlight source in the second wavelength range, and
the phosphor comprises a first phosphor which is a green phosphor and a second phosphor which is a red phosphor, thereby implementing a white light source with an emission wavelength of the light-emitting device as an excitation wavelength.

7. The light-emitting device package of claim 6 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the first wavelength range of 415 nm to 455 nm is 75% or less of the energy of the wavelength spectrum of the sunlight source in the first wavelength range.

8. The light-emitting device package of claim 6 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the second wavelength range of 465 nm to 495 nm is 100% or more of the energy of the wavelength spectrum of the sunlight source in the second wavelength range.

9. A light-emitting device package comprising:
a package body;
a light-emitting device disposed on the package body;
a molding member disposed on the light-emitting device; and
a phosphor disposed in the molding member,
wherein
an energy ratio of a wavelength spectrum of the light-emitting device package compared with an energy of a wavelength spectrum of a sunlight source in a second wavelength range of 465 nm to 495 nm is higher than an energy ratio of a wavelength spectrum of the light-emitting device package compared with an energy of a wavelength spectrum of a sunlight source in a first wavelength range of 415 nm to 455 nm,
wherein the phosphor comprises a first phosphor having a center wavelength of 515 nm to 570 nm, a second phosphor having a center wavelength of 580 nm to 670 nm, and implementing a white light source with an emission wavelength of the light-emitting device as an excitation wavelength,
wherein the energy ratio of the wavelength spectrum of the light-emitting device package in the second wavelength range of 465 nm to 495 nm is 60% or more of the energy of the wavelength spectrum of the sunlight source in the second wavelength range.

10. The light-emitting device package of claim 9 , further comprising a third phosphor having a center wavelength of 490 nm to 505 nm.

11. The light-emitting device package of claim 10 , wherein the third phosphor having the center wavelength of 490 nm to 505 nm is a cyan phosphor, and a composition of the third phosphor is one or more of (Ba, Mg) 3-a Si 6-b O 3.5-c N 8.5-d (Li, Cl, F, P) 1-e :Eu 2+ a , (Ba, Mg, Ca, Sr) 3-a Si 6 O 3 N 8 :Eu 2+ a , (Ba, Mg, Ca, Sr) 1-a Si 2 O 2 N 2 :Eu 2+ a .

12. The light-emitting device package of claim 10 , wherein the first phosphor is a green phosphor and the second phosphor is a red phosphor, and the third phosphor is a cyan phosphor,
wherein a phosphor composition of the first phosphor is higher in ratio than the second phosphor, and
wherein a phosphor composition of the third phosphor is less in ratio than the second phosphor.

13. The light-emitting device package of claim 9 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package compared with the energy of the wavelength spectrum of the sunlight source in the first wavelength range of 415 nm to 455 nm is 75% or less of the energy of the wavelength spectrum of the sunlight source having the first wavelength range.

14. The light-emitting device package of claim 13 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package in the first wavelength range of 415 nm to 455 nm is 60% or less of the energy of the wavelength spectrum of the sunlight source in the first wavelength range.

15. The light-emitting device package of claim 9 , wherein the energy ratio of the wavelength spectrum of the light-emitting device package in the second wavelength range of 465 nm to 495 nm is 80% or more of the energy of the wavelength spectrum of the sunlight source in the second wavelength range.

16. The light-emitting device package of c

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Jae Wook
• Kim Tae Ho
• Lee Heung Ju

Classifications

• C09K11/7707

  Germanates · CPC title

• C09K11/0883

  Arsenides; Nitrides; Phosphides · CPC title

• F21K9/60

  Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction · CPC title

• F21K9/20

  Light sources comprising attachment means · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title