KR101042583B1 - 백색 형광체 및 백색 발광 소자 내지 장치 - Google Patents
백색 형광체 및 백색 발광 소자 내지 장치 Download PDFInfo
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- KR101042583B1 KR101042583B1 KR1020087020731A KR20087020731A KR101042583B1 KR 101042583 B1 KR101042583 B1 KR 101042583B1 KR 1020087020731 A KR1020087020731 A KR 1020087020731A KR 20087020731 A KR20087020731 A KR 20087020731A KR 101042583 B1 KR101042583 B1 KR 101042583B1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 21
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- 239000002994 raw material Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 16
- 229910052791 calcium Inorganic materials 0.000 claims description 10
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- 238000002156 mixing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 21
- 238000009877 rendering Methods 0.000 abstract description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- 229910016655 EuF 3 Inorganic materials 0.000 description 13
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- 239000002585 base Substances 0.000 description 11
- 229910017639 MgSi Inorganic materials 0.000 description 10
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052749 magnesium Inorganic materials 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 6
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 4
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
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- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
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- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- 229910052772 Samarium Inorganic materials 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 229910052733 gallium Inorganic materials 0.000 description 2
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- 229910052746 lanthanum Inorganic materials 0.000 description 2
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- 229910052748 manganese Inorganic materials 0.000 description 2
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- 229910052727 yttrium Inorganic materials 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- NSATUTLGIUBWCR-UHFFFAOYSA-N C(C1)CC2=C1CCC2 Chemical compound C(C1)CC2=C1CCC2 NSATUTLGIUBWCR-UHFFFAOYSA-N 0.000 description 1
- 0 C1*2=C1C(C*1)*C1*2 Chemical compound C1*2=C1C(C*1)*C1*2 0.000 description 1
- APLDLWZQKWVXRS-UHFFFAOYSA-N CCCC(N(C)C)=C Chemical compound CCCC(N(C)C)=C APLDLWZQKWVXRS-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 206010026749 Mania Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- OMOVVBIIQSXZSZ-UHFFFAOYSA-N [6-(4-acetyloxy-5,9a-dimethyl-2,7-dioxo-4,5a,6,9-tetrahydro-3h-pyrano[3,4-b]oxepin-5-yl)-5-formyloxy-3-(furan-3-yl)-3a-methyl-7-methylidene-1a,2,3,4,5,6-hexahydroindeno[1,7a-b]oxiren-4-yl] 2-hydroxy-3-methylpentanoate Chemical compound CC12C(OC(=O)C(O)C(C)CC)C(OC=O)C(C3(C)C(CC(=O)OC4(C)COC(=O)CC43)OC(C)=O)C(=C)C32OC3CC1C=1C=COC=1 OMOVVBIIQSXZSZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002178 europium compounds Chemical class 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000002910 rare earth metals Chemical group 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7774—Aluminates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7729—Chalcogenides
- C09K11/773—Chalcogenides with zinc or cadmium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7729—Chalcogenides
- C09K11/7731—Chalcogenides with alkaline earth metals
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Luminescent Compositions (AREA)
- Led Device Packages (AREA)
- Led Devices (AREA)
Abstract
Description
Claims (13)
- 삭제
- 삭제
- SraSbMgcZndSieOf:Eu2+의 조성식(단, 식 중, a, b, c, d, f는 e=1을 기준으로 한 값이고, 0<(c+d)/(a+c+d)≤0.2, 1.8≤a+c+d≤2.2, 0≤b/(b+f)≤0.05, 3.5≤b+f≤4.2)으로 표시되는 것을 특징으로 하는 백색 형광체.
- 제3항에 있어서,(SrO1 -αSα)x·(Mg1 -βZnβO)y·(SiO2)z:Eu2 +의 조성식(식 중, 5≤x/y≤11, 3≤ z/y≤6, 0≤α≤0.1, 0≤β≤0.5)으로 표시되는 것을 특징으로 하는 백색 형광체.
- 삭제
- 제3항 또는 제4항에 있어서,CIE 색도 좌표 x=0.28∼0.45, y=0.25∼0.43으로 표시되는 백색광을 발광하는 것을 특징으로 하는 백색 형광체.
- 제3항 또는 제4항에 있어서,Eu2+의 농도가, Sr의 농도의 0.1∼5mol%인 것을 특징으로 하는 백색 형광체.
- 제3항 또는 제4항에 있어서,SrO 원료와, MgO 원료와, SiO2 원료와, Eu2+ 원료와, 필요에 따라 S 원료와, 필요에 따라 Zn 원료를 혼합하고, 환원 분위기 중 1000∼1400℃에서 소성하여 얻어지는 백색 형광체.
- 제3항 또는 제4항에 있어서,파장250nm∼480nm의 광여기에 의해 백색광을 발광하는 백색 형광체.
- 제3항 또는 제4항에 있어서,파장400nm의 광여기에 의해, 적어도 파장460nm±30nm, 580nm±30nm의 영역에 발광 피크를 갖는 것을 특징으로 하는 백색 형광체.
- 제3항 또는 제4항에 있어서,Sr의 일부가, Ca 및 Ba의 어느 한쪽 혹은 양방으로 치환되어 이루어지는 백색 형광체.
- 파장250nm∼480nm의 광을 발생하는 발광체와, 제3항 또는 제4항에 기재된 백색 형광체를 구비한 백색 발광 소자.
- 파장250nm∼480nm의 광을 발생하는 발광체와, 제3항 또는 제4항에 기재된 백색 형광체를 구비한 백색 발광 장치.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006139808 | 2006-05-19 | ||
JPJP-P-2006-00139808 | 2006-05-19 | ||
JPJP-P-2007-00113952 | 2007-04-24 | ||
JP2007113952A JP4188404B2 (ja) | 2006-05-19 | 2007-04-24 | 白色蛍光体および白色発光素子乃至装置 |
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KR20080090530A KR20080090530A (ko) | 2008-10-08 |
KR101042583B1 true KR101042583B1 (ko) | 2011-06-20 |
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KR1020087020731A KR101042583B1 (ko) | 2006-05-19 | 2007-05-17 | 백색 형광체 및 백색 발광 소자 내지 장치 |
Country Status (7)
Country | Link |
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US (1) | US7659658B2 (ko) |
JP (1) | JP4188404B2 (ko) |
KR (1) | KR101042583B1 (ko) |
CN (1) | CN101437922B (ko) |
DE (1) | DE112007001219B4 (ko) |
TW (1) | TW200804567A (ko) |
WO (1) | WO2007136105A1 (ko) |
Families Citing this family (10)
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JP2008297505A (ja) * | 2007-06-04 | 2008-12-11 | Mitsui Mining & Smelting Co Ltd | 電子線励起用白色蛍光体および白色発光素子乃至装置 |
WO2011033830A1 (ja) * | 2009-09-18 | 2011-03-24 | 三井金属鉱業株式会社 | 蛍光体 |
US8638527B2 (en) | 2009-10-16 | 2014-01-28 | Hitachi Global Storage Technologies Netherlands B.V. | Signaling method and apparatus for write assist of high coercivity media using integrated half coil |
US8411390B2 (en) | 2009-10-16 | 2013-04-02 | Hitachi Global Storage Technologies Netherlands B.V. | Integrated half coil structure for write assist of high coercivity media |
JP2013191385A (ja) * | 2012-03-13 | 2013-09-26 | Toshiba Lighting & Technology Corp | 照明装置 |
EP2913380B1 (en) * | 2012-10-23 | 2017-04-12 | Mitsui Mining and Smelting Co., Ltd. | Phosphor, led light-emission element, and light source device |
JP6241812B2 (ja) * | 2013-11-01 | 2017-12-06 | 宇部興産株式会社 | 白色発光蛍光体及び白色発光装置 |
CN103840066B (zh) * | 2013-12-30 | 2016-08-17 | 广州市鸿利光电股份有限公司 | 一种通过调节荧光粉浓度制作led器件的方法 |
CN104576632B (zh) * | 2014-12-30 | 2019-01-01 | 欧普照明股份有限公司 | 一种照明模组及具有该照明模组的照明装置 |
EP3184602B1 (en) * | 2015-12-23 | 2018-07-04 | Avantama AG | Luminescent component |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005226069A (ja) | 2004-01-16 | 2005-08-25 | Mitsubishi Chemicals Corp | 蛍光体、及びそれを用いた発光装置、照明装置、ならびに画像表示装置 |
JP2006124644A (ja) | 2004-09-28 | 2006-05-18 | Sumitomo Chemical Co Ltd | 蛍光体 |
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TW383508B (en) | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
US6255670B1 (en) * | 1998-02-06 | 2001-07-03 | General Electric Company | Phosphors for light generation from light emitting semiconductors |
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2007
- 2007-04-24 JP JP2007113952A patent/JP4188404B2/ja not_active Expired - Fee Related
- 2007-05-17 WO PCT/JP2007/060564 patent/WO2007136105A1/ja active Application Filing
- 2007-05-17 US US12/227,520 patent/US7659658B2/en not_active Expired - Fee Related
- 2007-05-17 DE DE112007001219.6T patent/DE112007001219B4/de not_active Expired - Fee Related
- 2007-05-17 KR KR1020087020731A patent/KR101042583B1/ko active IP Right Grant
- 2007-05-17 CN CN2007800166931A patent/CN101437922B/zh not_active Expired - Fee Related
- 2007-05-18 TW TW096117704A patent/TW200804567A/zh not_active IP Right Cessation
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JP2005226069A (ja) | 2004-01-16 | 2005-08-25 | Mitsubishi Chemicals Corp | 蛍光体、及びそれを用いた発光装置、照明装置、ならびに画像表示装置 |
JP2006124644A (ja) | 2004-09-28 | 2006-05-18 | Sumitomo Chemical Co Ltd | 蛍光体 |
Also Published As
Publication number | Publication date |
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DE112007001219T5 (de) | 2009-03-12 |
US20090108732A1 (en) | 2009-04-30 |
KR20080090530A (ko) | 2008-10-08 |
CN101437922B (zh) | 2012-05-23 |
CN101437922A (zh) | 2009-05-20 |
WO2007136105A1 (ja) | 2007-11-29 |
DE112007001219B4 (de) | 2017-10-05 |
TW200804567A (en) | 2008-01-16 |
JP2007332352A (ja) | 2007-12-27 |
US7659658B2 (en) | 2010-02-09 |
TWI372177B (ko) | 2012-09-11 |
JP4188404B2 (ja) | 2008-11-26 |
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