WO2015068916A1 - Dispositif électroluminescent - Google Patents

Dispositif électroluminescent Download PDF

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Publication number
WO2015068916A1
WO2015068916A1 PCT/KR2014/003664 KR2014003664W WO2015068916A1 WO 2015068916 A1 WO2015068916 A1 WO 2015068916A1 KR 2014003664 W KR2014003664 W KR 2014003664W WO 2015068916 A1 WO2015068916 A1 WO 2015068916A1
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WO
WIPO (PCT)
Prior art keywords
light
phosphor
wavelength
mixed
color rendering
Prior art date
Application number
PCT/KR2014/003664
Other languages
English (en)
Korean (ko)
Inventor
김태훈
이상일
이상재
최봉열
지병주
황제은
Original Assignee
루미마이크로 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 루미마이크로 주식회사 filed Critical 루미마이크로 주식회사
Priority to JP2016553185A priority Critical patent/JP2017502528A/ja
Priority to US15/035,378 priority patent/US9837585B2/en
Priority claimed from KR1020140049845A external-priority patent/KR101795740B1/ko
Publication of WO2015068916A1 publication Critical patent/WO2015068916A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502—Wavelength conversion materials
    • H01L33/504—Elements with two or more wavelength conversion materials

Definitions

  • Color rendering is an index that evaluates how well the light from a light source makes an object's unique color appear as true natural color.
  • Such color rendering properties include an average color rendering index Ra and a special color rendering index R9 to R15 for calculating an average value of eight colors defined as R1 to R8.
  • Such color rendering indexes include red R9, yellow R10, and blue R12.
  • the present invention discloses a light emitting device that can improve the R12 value in addition to the average color rendering index while implementing white light.
  • Example 7 is a table measuring color coordinates and color rendering properties of mixed light according to Example 3,
  • Example 8 is a graph showing excitation spectra of mixed light according to Example 4,
  • Example 9 is a table measuring color coordinates and color rendering properties of mixed light according to Example 4,
  • FIG. 21 is a table measuring color coordinates and color rendering properties of mixed light according to Comparative Example 4.
  • Example 23 is a table measuring color coordinates and color rendering properties of mixed light according to Example 7,
  • 31 is a table measuring color coordinates and color rendering properties of mixed light according to Comparative Example 6;
  • 35 is a table measuring color coordinates and color rendering properties of mixed light according to Example 11,
  • the first wavelength converter may be represented according to the following general formula (1) or (3).
  • the spectrum of light emitted from the manufactured white LEDs is shown in FIG. 8 and the color rendering index is shown in FIG. 9.
  • 11.8 wt% of the mixed phosphor and 88.2 wt% of the encapsulant were mixed and coated on a blue LED chip having a size of 1000 ⁇ m ⁇ 500 ⁇ m and a wavelength peak of 453.8 nm.
  • the mixed phosphor was Lu 3 Al 5 O 12 : Ce 3+ 69.3 wt% with a wavelength peak of 520 nm, Y 3 Al 5 O 12 : Ce 3+ 17.3 wt% with a wavelength peak of 546 nm, and CaAlSiN 3 with a wavelength peak of 650 nm.
  • 13.3 wt% was prepared by mixing the encapsulant.
  • the spectrum of light emitted from the manufactured white LEDs is shown in FIG. 16 and the color rendering index is shown in FIG. 17.
  • the mixed phosphor was 7.8 wt% of the first phosphor (BaSi 2 O 2 N 2 : Eu 2+ ) having a wavelength peak of 497 nm, and 77.7 wt% of the second phosphor (Lu 3 Al 5 O 12 : Ce 3+ ) having a wavelength peak of 520 nm.
  • Comparative Examples 3 and 4 used the same phosphor as in Example 5 and were included in a similar content, but it can be seen that the R12 value was low. Based on these results, it can be seen that the higher the peak wavelength of the blue LED (the longer the wavelength), the higher the content of the first phosphor should be.
  • the spectrum of light emitted from the manufactured white LEDs is shown in FIG. 22 and the color rendering index is shown in FIG. 23.
  • the spectrum of light emitted from the manufactured white LED is shown in FIG. 26 and the color rendering index is shown in FIG. 27.
  • Example 7 Same as Example 7 except that the ratio of the first phosphor to the second phosphor was adjusted to 1:25 by adjusting the phosphor mixing ratio of 0.4 wt% of the first phosphor, 10.0 wt% of the second phosphor, and 1.6 wt% of the third phosphor. To make.
  • the spectrum of the light emitted from the manufactured white LEDs is shown in FIG. 28 and the color rendering index is shown in FIG. 29.
  • Example 7 Same as Example 7, except that the ratio of the first phosphor to the second phosphor was adjusted to 1: 3 with the phosphor mixing ratio of 3.3 wt% of the first phosphor, 9.8 wt% of the second phosphor, and 2.3 wt% of the third phosphor. To make.
  • 11.2 wt% of the mixed phosphor and 88.8 wt% of the encapsulant were mixed and coated on a blue LED chip having a size of 1000 ⁇ m ⁇ 500 ⁇ m and a dominant wavelength of 457 nm.
  • the mixed phosphor was 1.1 wt% of a first phosphor (BaSi 2 O 2 N 2 : Eu 2+ ) having a wavelength peak of 497 nm, and 8.8 wt of a second phosphor (Lu 3 Al 5 O 12 : Ce 3+ ) having a wavelength peak of 520 nm.
  • Example 10 Same as Example 10 except that the mixing ratio of the first phosphor and the second phosphor was adjusted to 1: 7 with the phosphor mixing ratio of 1.3 wt% of the first phosphor, 8.8 wt% of the second phosphor, and 1.7 wt% of the third phosphor. To make.
  • the spectrum of light emitted from the manufactured white LEDs is shown in FIG. 36 and the color rendering index is shown in FIG. 37.
  • the color rendering index may be maintained at 80 or more when the ratio of the first phosphor to the second phosphor is 1: 7 to 1: 8. However, when the ratio of the first phosphor to the second phosphor is greater than 1: 10 or less than 1: 3, it can be seen that R12 falls below 80.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention concerne un dispositif électroluminescent qui comprend : un élément électroluminescent pour émettre une première lumière dans une bande de longueur d'onde bleue ; un premier convertisseur de longueur d'onde pour convertir la première lumière en deuxième lumière ; un deuxième convertisseur de longueur d'onde pour convertir la première lumière en troisième lumière ; et un troisième convertisseur de longueur d'onde pour convertir la première lumière en quatrième lumière, les lumières, de la première à la quatrième, possédant des longueurs d'onde centroïdes qui satisfont à la relation suivante : [Expression 1] λ1 < λ2 < λ3 < λ4 (λ1 étant la longueur d'onde centroïde de la première lumière ; λ2 étant la longueur d'onde centroïde de la deuxième lumière ; λ3 étant la longueur d'onde centroïde de la troisième lumière ; et λ4 étant la longueur d'onde centroïde de la quatrième lumière.)
PCT/KR2014/003664 2013-11-08 2014-04-25 Dispositif électroluminescent WO2015068916A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016553185A JP2017502528A (ja) 2013-11-08 2014-04-25 発光装置
US15/035,378 US9837585B2 (en) 2013-11-08 2014-04-25 Light emitting device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20130135280 2013-11-08
KR10-2013-0135280 2013-11-08
KR10-2014-0049845 2014-04-25
KR1020140049845A KR101795740B1 (ko) 2013-11-08 2014-04-25 발광장치

Publications (1)

Publication Number Publication Date
WO2015068916A1 true WO2015068916A1 (fr) 2015-05-14

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Application Number Title Priority Date Filing Date
PCT/KR2014/003664 WO2015068916A1 (fr) 2013-11-08 2014-04-25 Dispositif électroluminescent

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WO (1) WO2015068916A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109817790A (zh) * 2018-12-26 2019-05-28 广州市巨宏光电有限公司 一种仿太阳光谱led灯

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6621211B1 (en) * 2000-05-15 2003-09-16 General Electric Company White light emitting phosphor blends for LED devices
US20100157572A1 (en) * 2008-12-18 2010-06-24 Foxsemicon Integrated Technology, Inc. Illuminating apparatus with phosphor films
JP4963705B2 (ja) * 2006-08-14 2012-06-27 株式会社フジクラ 発光デバイス及び照明装置
JP2013047347A (ja) * 2010-09-02 2013-03-07 Toshiba Corp 蛍光体およびそれを用いた発光装置
KR20130057354A (ko) * 2011-11-23 2013-05-31 삼성전자주식회사 백색 발광 다이오드 및 이를 포함하는 조명장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6621211B1 (en) * 2000-05-15 2003-09-16 General Electric Company White light emitting phosphor blends for LED devices
JP4963705B2 (ja) * 2006-08-14 2012-06-27 株式会社フジクラ 発光デバイス及び照明装置
US20100157572A1 (en) * 2008-12-18 2010-06-24 Foxsemicon Integrated Technology, Inc. Illuminating apparatus with phosphor films
JP2013047347A (ja) * 2010-09-02 2013-03-07 Toshiba Corp 蛍光体およびそれを用いた発光装置
KR20130057354A (ko) * 2011-11-23 2013-05-31 삼성전자주식회사 백색 발광 다이오드 및 이를 포함하는 조명장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109817790A (zh) * 2018-12-26 2019-05-28 广州市巨宏光电有限公司 一种仿太阳光谱led灯
CN109817790B (zh) * 2018-12-26 2021-08-13 广州市巨宏光电有限公司 一种仿太阳光谱led灯

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