JP2007189239A - 発光素子を備えた光源 - Google Patents
発光素子を備えた光源 Download PDFInfo
- Publication number
- JP2007189239A JP2007189239A JP2007023598A JP2007023598A JP2007189239A JP 2007189239 A JP2007189239 A JP 2007189239A JP 2007023598 A JP2007023598 A JP 2007023598A JP 2007023598 A JP2007023598 A JP 2007023598A JP 2007189239 A JP2007189239 A JP 2007189239A
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- Prior art keywords
- light source
- light
- phosphor
- source according
- led
- Prior art date
- Legal status (The legal status 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 status listed.)
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 19
- -1 alkaline earth metal orthosilicates Chemical class 0.000 claims abstract description 17
- 230000003595 spectral effect Effects 0.000 claims abstract description 13
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 11
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052605 nesosilicate Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 52
- 238000005266 casting Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 13
- 238000001228 spectrum Methods 0.000 claims description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 238000004020 luminiscence type Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 150000004820 halides Chemical class 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 150000001342 alkaline earth metals Chemical group 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910017639 MgSi Inorganic materials 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- 238000009877 rendering Methods 0.000 abstract description 9
- 238000005286 illumination Methods 0.000 abstract description 4
- 229910004283 SiO 4 Inorganic materials 0.000 description 24
- 239000011575 calcium Substances 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000005855 radiation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000011572 manganese Substances 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910001413 alkali metal ion Inorganic materials 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- DXNVUKXMTZHOTP-UHFFFAOYSA-N dialuminum;dimagnesium;barium(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mg+2].[Mg+2].[Al+3].[Al+3].[Ba+2].[Ba+2] DXNVUKXMTZHOTP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 150000004762 orthosilicates Chemical class 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- AGMGTXZBSQRRBN-UHFFFAOYSA-N [Sr++].[Ba++].[O-][Si]([O-])([O-])[O-] Chemical compound [Sr++].[Ba++].[O-][Si]([O-])([O-])[O-] AGMGTXZBSQRRBN-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- FZTPSPNAZCIDGO-UHFFFAOYSA-N barium(2+);silicate Chemical compound [Ba+2].[Ba+2].[O-][Si]([O-])([O-])[O-] FZTPSPNAZCIDGO-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910001940 europium oxide Inorganic materials 0.000 description 1
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000011574 phosphorus Chemical group 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
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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
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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
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7795—Phosphates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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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
- C09K11/7734—Aluminates
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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
- C09K11/77344—Aluminosilicates
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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
- C09K11/774—Borates
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- F21—LIGHTING
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- F21Y2115/10—Light-emitting diodes [LED]
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- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16135—Disposition the bump connector connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/16145—Disposition the bump connector connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being stacked
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- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32245—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
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- H01L2224/321—Disposition
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- H01L2224/32257—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic the layer connector connecting to a bonding area disposed in a recess of the surface of the item
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- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
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- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
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- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
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Abstract
【解決手段】発光素子と、蛍光体とを備え、発光素子が第1のスペクトル範囲で発光し、蛍光体がアルカリ土類金属オルト珪酸塩の群に由来し、発光素子の発光の一部を吸収し、別のスペクトル範囲で発光する光源において、蛍光体が、組成:(2−x−y)SrO・x(Bau,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+で示される2価のユウロピウムで活性化されたアルカリ土類金属オルト珪酸塩および/または組成:(2−x−y)BaO・x(Sru,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+で示されるアルカリ土類金属オルト珪酸塩である。
【選択図】図1
Description
(2−x−y)SrO・x(Bau,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+
(但し、0<x<1.6
0.005<y<0.5
x+y≦1.6
0≦a、b、c、d<0.5
u+v=1である)
で示される2価のユウロピウムで活性化されたアルカリ土類金属オルト珪酸塩
および/または組成:
(2−x−y)BaO・x(Sru,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+
(但し、0.01<x<1.6
0.005<y<0.5
0≦a、b、c、d<0.5
u+v=1
x×u≧0.4である)
で示されるアルカリ土類金属オルト珪酸塩であり、
a、b、c、dの値のうちの少なくとも1つが0.01より大きいことによって解決される。
本発明の他の利点を以下において実施例および図面に基づいて詳細に説明する。
図1は、464nmの重心波長を有する第1のスペクトル範囲において発光する青色LEDと、596nmの最大値を有する第2のスペクトル範囲において発光する組成(Sr1.4Ca0.6SiO4:Eu2+)の本発明による蛍光体との組合わせによって形成されている2700Kの色温度を有する白色LEDの発光スペクトルを示す。
T=2778K(464nm+Sr1.4Ca0.6SiO4:Eu2+);
x=0.4619、y=0.4247、Ra=72、
T=2950K(464nm+Sr1.4Ca0.6SiO4:Eu2+);
x=0.4380、y=0.4004、Ra=73、
T=3497K(464nm+Sr1.6Ba0.4SiO4:Eu2+);
x=0.4086、y=0.3996、Ra=74、
T=4183K(464nm+Sr1.9Ba0.08Ca0.02SiO4:Eu2+);
x=0.3762、y=0.3873、Ra=75、
T=6624K(464nm+Sr1.9Ba0.02Ca0.08SiO4:Eu2+);
x=0.3101、y=0.3306、Ra=76、
T=6385K(464nm+Sr1.6Ca0.4SiO4:Eu2++Sr0.4Ba1.6SiO4:Eu2+);
x=0.3135、y=0.3397、Ra=82、
T=4216K(464nm+Sr1.9Ba0.08Ca0.02SiO4:Eu2+));
x=0.3710、y=0.3696、Ra=82、
T=3954K(464nm+Sr1.6Ba0.4SiO4:Eu2++Sr0.4Ba1.6SiO4:Eu2++YVO4:Eu3+);
x=0.3756、y=0.3816、Ra=84、
T=6489K(UV−LED+Sr1.6Ca0.4SiO4:Eu2++Sr0.4Ba1.6SiO4:Eu2++バリウム−マグネシウムアルミン酸塩:Eu2+);
x=0.3115、y=0.3390、Ra=86、
T=5097K(464nm+Sr1.6Ba0.4(Si0.98B0.02)O4:Eu2++Sr0.6Ba1.4SiO4:Eu2+);
x=0.3423、y=0.3485、Ra=82、
T=5084K(UV−LED+Sr1.6Ca0.4(Si0.99B0.01)O4:Eu2++Sr0.6Ba1.4SiO4:Eu2++ストロンチウム−マグネシウムアルミン酸塩:Eu2+);
x=0.3430、y=0.3531、Ra=83、
T=3369K(464nm+Sr1.4Ca0.6Si0.95Ge0.05O4:Eu2+);
x=0.4134、y=0.3959、Ra=74、
T=2787K(466nm+Sr1.4Ca0.6Si0.98P0.02O4.01:Eu2+);
x=0.4630、y=0.4280、Ra=72、
T=2913K(464nm+Sr1.4Ca0.6Si0.98Al0.02O4:Eu2+);
x=0.4425、y=0.4050、Ra=73
T=4201K。
1´ LEDアレイ
2 プリント板
3、3´ 封止材料
4、4´ 反射鏡
5 透光板
6 蛍光体
7 ポリマーレンズ
Claims (16)
- LED素子と、蛍光体とを備え、LED素子が第1のスペクトル範囲、特に光スペクトルの青色および/または紫外線範囲で発光し、蛍光体がアルカリ土類金属オルト珪酸塩の群に由来するか又はこの発光物質群の少なくとも1つの成分を含み、発光素子の発光の一部を吸収し、別のスペクトル範囲、特に黄緑色、黄色又はオレンジ色の範囲で発光する光源において、
蛍光体が、組成:
(2−x−y)SrO・x(Bau,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+
(但し、0<x<1.6
0.005<y<0.5
x+y≦1.6
0≦a、b、c、d<0.5
u+v=1である)
で示される2価のユウロピウムで活性化されたアルカリ土類金属オルト珪酸塩
および/または組成:
(2−x−y)BaO・x(Sru,Cav)O・(1−a−b−c−d)SiO2・aP2O5 bAl2O3 cB2O3 dGeO2:yEu2+
(但し、0.01<x<1.6
0.005<y<0.5
0≦a、b、c、d<0.5
u+v=1
x×u≧0.4である)
で示されるアルカリ土類金属オルト珪酸塩であり、
a、b、c、dの値のうちの少なくとも1つが0.01より大きいことを特徴とする光源。 - 蛍光体において珪素の一部がガリウムによって置換されていることを特徴とする請求項1記載の光源。
- 光源が、2価のユウロピウムおよび/またはマンガンで活性化されたアルカリ土類金属アルミン酸塩の群から成る付加的な蛍光体、および/または、Y(V,P,Si)O4:Eu,Bi、Y2O2S:Eu,Biまたは式Me(3−x−y)MgSi2O8:xEu,yMn(但し、0.005<x<0.5、0.005<y<0.5、MeはBa、Sr、Caの少なくとも1つから成る)で示されるアルカリ土類金属−マグネシウム−二珪酸塩:Eu2+,Mn2+の群から成り赤色光を発する付加的な他の蛍光体を含んでいることを特徴とする請求項1又は2記載の光源。
- 1価のイオン、特にハロゲン化物および/またはアルカリ金属が蛍光体格子の中に組み込まれていることを特徴とする請求項1から3のいずれか1項に記載の光源。
- 光源の第1のスペクトル範囲が300〜500nmであることを特徴とする請求項1から4のいずれか1項に記載の光源。
- 光源の第2のスペクトル範囲が430nm〜650nmであることを特徴とする請求項1から5のいずれか1項に記載の光源。
- 光源がRa値>70、特にRa値>72を有する白色光を放射することを特徴とする請求項1から6のいずれか1項に記載の光源。
- 光源が少なくとも2つの異なる蛍光体を有し、少なくとも1つの蛍光体がアルカリ土類金属オルト珪酸塩発光物質であることを特徴とする請求項1から7のいずれか1項に記載の光源。
- 1つまたは複数のLEDチップ(1)が反射鏡(4)内のプリント板(2)上に配置され、蛍光体(6)が、反射鏡(4)上に配置されている透光板(5)内に分散されていることを特徴とする請求項1から8のいずれか1項に記載の光源。
- 1つまたは複数のLEDチップ(1)が反射鏡(4)内のプリント板(2)上に配置され、蛍光体(6)が反射鏡(4)に被着されていることを特徴とする請求項1から8のいずれか1項に記載の光源。
- LEDチップ(1)がドーム状の形状を有する透明な注型材料(3,3´)で注型されていることを特徴とする請求項1から10のいずれか1項に記載の光源。
- 蛍光体が注型材料(3)中に分散され、この注型材料(3)によって、ガスが閉込められることなしに、プリント板(2)上に配置されたLEDチップ(1)とポリマーレンズ(7)とが結合され、ポリマーレンズ(7)と注型材料(3)とが最大で0.1だけ異なる屈折率を有することを特徴とする請求項1から11のいずれか1項に記載の光源。
- ポリマーレンズ(7)が球形もしくは楕円形の窪みを有し、この窪みが注型材料(3)を充填されて、LEDアレイ(1´)がポリマーレンズ(7)から僅かな距離で固定されていることを特徴とする請求項12記載の光源。
- 蛍光体が特に無機のマトリックス中に懸濁されていることを特徴とする請求項1から13のいずれか1項に記載の光源。
- 少なくとも2つの蛍光体が個々にマトリックス中に分散され、これらのマトリックスが光の伝搬方向に相前後して配置されていることを特徴とする請求項8又は14に記載の光源。
- 体積分布の平均粒度d50が2μm〜20μmであることを特徴とする請求項1から15のいずれか1項に記載の光源。
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JP2011040494A (ja) * | 2009-08-07 | 2011-02-24 | Koito Mfg Co Ltd | 発光モジュール |
JP2011105951A (ja) * | 2000-12-28 | 2011-06-02 | Toyoda Gosei Co Ltd | 蛍光体の材料 |
JP2011521469A (ja) * | 2008-05-23 | 2011-07-21 | クリー インコーポレイテッド | 半導体照明部品 |
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