WO2015068916A1 - Dispositif électroluminescent - Google Patents
Dispositif électroluminescent Download PDFInfo
- 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
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- phosphor
- wavelength
- mixed
- color rendering
- Prior art date
Links
- 238000009877 rendering Methods 0.000 claims description 70
- 238000000034 method Methods 0.000 claims description 13
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 2
- 229910052765 Lutetium Inorganic materials 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 158
- 230000000052 comparative effect Effects 0.000 description 39
- 239000008393 encapsulating agent Substances 0.000 description 24
- 238000000695 excitation spectrum Methods 0.000 description 19
- 238000001228 spectrum Methods 0.000 description 19
- 229910016066 BaSi Inorganic materials 0.000 description 11
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 102100032047 Alsin Human genes 0.000 description 1
- 101710187109 Alsin Proteins 0.000 description 1
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nitride compound Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Images
Classifications
-
- 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
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 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/003664 WO2015068916A1 (fr) | 2013-11-08 | 2014-04-25 | Dispositif électroluminescent |
Country Status (1)
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WO (1) | WO2015068916A1 (fr) |
Cited By (1)
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)
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 |
-
2014
- 2014-04-25 WO PCT/KR2014/003664 patent/WO2015068916A1/fr active Application Filing
Patent Citations (5)
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)
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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