WO2004030109A1 - Luminescent material, especially for led application - Google Patents
Luminescent material, especially for led application Download PDFInfo
- Publication number
- WO2004030109A1 WO2004030109A1 PCT/EP2003/010599 EP0310599W WO2004030109A1 WO 2004030109 A1 WO2004030109 A1 WO 2004030109A1 EP 0310599 W EP0310599 W EP 0310599W WO 2004030109 A1 WO2004030109 A1 WO 2004030109A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blue
- luminescent material
- material according
- light source
- phosphor
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 7
- 229910052788 barium Inorganic materials 0.000 claims abstract description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 23
- 230000005855 radiation Effects 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 229910015811 MSi2 Inorganic materials 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 8
- 150000001768 cations Chemical class 0.000 description 5
- 238000000295 emission spectrum Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000000695 excitation spectrum Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229910016010 BaAl2 Inorganic materials 0.000 description 1
- 229910016064 BaSi2 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910002795 Si–Al–O–N Inorganic materials 0.000 description 1
- 229910003668 SrAl Inorganic materials 0.000 description 1
- 229910004412 SrSi2 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- -1 oxy nitrides Chemical class 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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
-
- 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
- C09K11/77347—Silicon Nitrides or Silicon Oxynitrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—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
- H01L2224/48221—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
- H01L2224/48245—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
- H01L2224/48247—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 connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- This invention relates to a luminescent material which is excitable in the UV- blue part of the spectral region, and more particularly, but not exclusively to a phosphor for light sources, especially for Light Emitting Diodes (LED).
- the phosphor belongs to the class of rare-earth activated silicon oxynitrides.
- So far white LEDs were realized by combining a blue-emitting diode with a yellow emitting phosphor. Such a combination has a poor color rendition, which, however, can be improved significantly by using a red-green-blue system (RGB).
- RGB red-green-blue system
- Such a system uses for example a red and blue emitter in combination with a green-emitting aluminate phosphor, like SrAl 0 :Eu or BaAl 2 0 4 :Eu, with the possible addition of Mn to Eu, whose emission maximum is around 520 nm, see US-A 6 278 135.
- the position of the excitation and emission bands of theses aluminates is not optimum. They have to be excited by short UV in the range of 330 to 400 nm.
- a further object is to provide a phosphor with a fine-tuned green emission which can be efficiently excited by UV/blue radiation.
- a further object is to provide a phosphor for use in an illumination device with at least one LED as light source, the LED emitting primary radiation in the range from 380 to 470 nm, this radiation being partially or completely converted into longer- wavelength radiation by such phosphors which are exposed to the primary radiation of the LED.
- a further object is to provide an illumination device which emits white light and in particular has a high color rendering.
- a fur- ther object is to provide a high-efficiency illumination device like a LED device which absorbs well in the range from 380 to 470 nm and is easy to produce.
- the conversion is achieved at least with the aid of a phosphor which originates from the class of the Eu- or Eu,Mn-coactivated silicone oxy nitrides.
- the metal M is Ca or at least mainly Ca with minor additions of Ba and/ or Sr for a green-emitting material which can be efficiently excited with blue radiation.
- the incorporation of nitrogen increases the degree of covalent bonding and ligand-field splitting. As a consequence this leads to a shift of excitation and emission bands to longer wavelengths compared to oxide lattices.
- the obtained phosphors show high chemical and thermal sta- bility.
- More extended fine tuning of all relevant properties can be obtained by use of a cation M which is achieved by combining several of said M metals, by inclusion of Zn as part of cation M, preferably up to 5 - 40 mol-% of M, and/ or at least partial replacement of Si by Ge.
- the amount of Eu doped to cation M is a partial replacement of between 0,1 and 25 %, preferably between 2 and 15% of M.
- further doping with Mn for fine-tuning of relevant properties is possible with an preferred amount of at most 50% of the given Eu doping.
- Figure 1 shows a semiconductor component (LED) which serves as light source for white light, with casting resin (Figure la) and without casting resin (Figure lb);
- Figure 2 shows an illumination device with phosphors in accordance with the present invention
- Figure 3 to 5 show the emission spectra and reflection spectra of phosphors in accordance with the present invention.
- FIG. 1 a structure similar to that used in WO 01/40403 is described for use in a white LED together with an InGaN chip.
- the structure of such a light source for white light is specifically shown in Figure la.
- the light source is based on a semiconductor component (chip 1) of type InGaN with a peak emission wavelength of 400 nm, having a first and a second electrical connection 2,3, which is embedded in an opaque base housing 8 in the region of a recess 9.
- One of the connections 3 is connected to the chip 1 via a bonding wire 4.
- the recess has a wall 7 which serves as reflector for the blue primary radiation of the chip 1.
- the recess 9 is filled with a potting compound 5 which contains a silicone casting resin (or epoxy casting resin) as its main constituents (pref. at least 80 % by weight) and further comprises phosphor pigments 6 (pref. less than 15% by weight). There are also further small amounts of, inter alia, methyl ether and Aerosil.
- the phosphor pigments are a mixture of three pigments which emit blue, green and red light with the green phosphor being in accordance with the invention.
- Fig. lb shows an embodiment of a light source with a semiconductor component 10 in which the conversion into white light is effected by means of phosphor conversion layers 16 which are applied directly to the individual chip.
- a contact layer 12 On top of a substrate 11 there are a contact layer 12, a mirror 13, a LED chip 14, a filter 15 and a phosphor layer 16, which is excited by the primary radiation of the LED, and converts it into visible long-wave radiation.
- This structural unit is surrounded by a plastic lens 17. Only the upper contact 18 of the two ohmic contacts is illustrated.
- Primary UV radiation of the LED is around 400 nm and secondary radiation is emitted by a first phosphor in accordance with the invention using BaSi2 ⁇ 2 N2:Eu emitting around 500 nm and by a second phosphor using a Nitridosilicate emitting orange-red.
- Figure 2 shows an illumination device ' 20. It comprises a common support 21, to which a cubical outer housing 22 is adhesively bonded. Its upper side is provided with a common cover 23.
- the cubical housing has cutouts in which individual semiconductor components 24 are accommodated. They are blue emitting light-emitting diodes with a peak emission of around 450 to 470 nm.
- the conversion into white light takes place by means of conversion layers 25 which are arranged on all the surfaces which are accessible to the blue radiation. These include the inner surfaces of the side walls of the housing, of the cover and of the support.
- the conversion layers 25 consist of phosphors which emit in the red spectral region, and in the green spectral region using a phosphor according to the invention and mixing up together with the non- absorbed part of the primary radiation blue primary into white light.
- the emission can be shifted in the range 500-570 nm, while the top of the excitation band can be shifted from 400 nm up to 430 nm.
- the observed shift to higher wavelengths is ascribed to a center of gravity of the Eu 5d band at lower energy and a stronger ligand- field splitting of the Eu 5d band.
- these materials can convert UV-blue radiation into green light due to low-energy excitation bands, they can be applied in white light sources, for example based on primarily blue-emitting LEDs (typically GaN or InGaN) combined with a red-emitting phosphor.
- blue-emitting LEDs typically GaN or InGaN
- Additional fine tuning can be achieved by incorporation of Zn as an addition to cation M, preferably not more than 30%, and at least partial replacement of Si by Ge, preferably not more than 25 %.
- the powder mixture is fired for several hours in Mo crucibles at 1100-1400 °C in a reducing atmosphere of mainly N 2 with small amounts of H 2 (10%) in horizontal tube furnaces.
- Figure 3 shows a typical emission/ excitation spectra of CaSi20 2 N 2 :Eu.
- Figure 4 shows a typical emission/ excitation spectra of SrSi 2 0 2 N 2 :Eu.
- Figure 5 shows a typical emission/ excitation spectra of BaSi 2 0 2 N 2 :Eu.
- Doping with Eu was 10% of cation M in all embodiments.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60307415T DE60307415T2 (en) | 2002-09-24 | 2003-09-23 | PHOTOLUMINESIZING SUBSTANCES FOR LUMINAIRES, AND LUMINAIRE DIODE |
JP2004539002A JP3851331B2 (en) | 2002-09-24 | 2003-09-23 | Luminescent material, for example luminescent material for LED |
US10/496,707 US7351356B2 (en) | 2002-09-24 | 2003-09-23 | Luminescent material, especially for LED application |
EP03750612A EP1449264B1 (en) | 2002-09-24 | 2003-09-23 | Photoluminescent material for light emitting diodes, and light emitting diode |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20020021172 EP1413618A1 (en) | 2002-09-24 | 2002-09-24 | Luminescent material, especially for LED application |
EP02021172.8 | 2002-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004030109A1 true WO2004030109A1 (en) | 2004-04-08 |
WO2004030109A8 WO2004030109A8 (en) | 2004-06-10 |
Family
ID=32039086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/010599 WO2004030109A1 (en) | 2002-09-24 | 2003-09-23 | Luminescent material, especially for led application |
Country Status (8)
Country | Link |
---|---|
US (1) | US7351356B2 (en) |
EP (2) | EP1413618A1 (en) |
JP (1) | JP3851331B2 (en) |
CN (1) | CN100592537C (en) |
AT (1) | ATE335800T1 (en) |
DE (1) | DE60307415T2 (en) |
TW (1) | TWI283078B (en) |
WO (1) | WO2004030109A1 (en) |
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005030903A1 (en) | 2003-09-24 | 2005-04-07 | Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh | Highly efficient led-based illumination system featuring improved color rendering |
WO2005030905A1 (en) * | 2003-09-24 | 2005-04-07 | Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh | Highly efficient luminous substance |
JP2005298721A (en) * | 2004-04-14 | 2005-10-27 | Nichia Chem Ind Ltd | Oxynitride phosphor and light emitting device using the same |
EP1595934A2 (en) * | 2004-05-14 | 2005-11-16 | Dowa Mining Co., Ltd. | Phosphor and production method of the same and light source and led using the phosphor |
EP1609839A2 (en) * | 2004-06-25 | 2005-12-28 | Dowa Mining Co., Ltd. | Phosphor and production method of the same, method of shifting emission wavelength of phosphor, and light source and led |
WO2006033418A1 (en) * | 2004-09-22 | 2006-03-30 | National Institute For Materials Science | Phosphor, process for producing the same and luminescence apparatus |
WO2006035991A1 (en) * | 2004-09-29 | 2006-04-06 | Showa Denko K.K. | Oxynitride-based fluorescent material and method for production thereof |
WO2006035995A1 (en) * | 2004-09-29 | 2006-04-06 | Showa Denko K.K. | Oxynitride-based fluorescent material and method for production thereof |
JP2006117943A (en) * | 2004-10-21 | 2006-05-11 | Patent Treuhand Ges Elektr Gluehlamp Mbh | Stable highly efficient oxynitride light-emitting substance, light source having the light-emitting substance and method for producing the light-emitting substance |
US7252788B2 (en) | 2004-02-27 | 2007-08-07 | Dowa Mining Co., Ltd. | Phosphor, light source and LED |
US7319195B2 (en) | 2003-11-28 | 2008-01-15 | Dowa Electronics Materials Co., Ltd. | Composite conductor, superconductive apparatus system, and composite conductor manufacturing method |
US7345418B2 (en) | 2004-08-27 | 2008-03-18 | Dowa Mining Co., Ltd. | Phosphor mixture and light emitting device using the same |
WO2008092437A1 (en) * | 2007-02-02 | 2008-08-07 | Osram Opto Semiconductors Gmbh | Assembly and method for generating mixed light |
JP2008530812A (en) * | 2005-02-17 | 2008-08-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Light source system including a green emissive ceramic luminescence converter |
US7414272B2 (en) | 2004-07-14 | 2008-08-19 | Kabushiki Kaisha Toshiba | Fluorescent substance containing nitrogen, method for manufacturing the same, and light-emitting device |
US7432647B2 (en) | 2004-07-09 | 2008-10-07 | Dowa Electronics Materials Co., Ltd. | Light source having phosphor including divalent trivalent and tetravalent elements |
US7434981B2 (en) | 2004-05-28 | 2008-10-14 | Dowa Electronics Materials Co., Ltd. | Manufacturing method of metal paste |
US7443094B2 (en) | 2005-03-31 | 2008-10-28 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method of the same, and light emitting device using the phosphor |
US7445730B2 (en) | 2005-03-31 | 2008-11-04 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method of the same, and light emitting device using the phosphor |
US7476338B2 (en) | 2004-08-27 | 2009-01-13 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method for the same, and light source |
US7476335B2 (en) | 2004-08-20 | 2009-01-13 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method therefore, and light source using the phosphor |
US7477009B2 (en) | 2005-03-01 | 2009-01-13 | Dowa Electronics Materials Co., Ltd. | Phosphor mixture and light emitting device |
US7476337B2 (en) | 2004-07-28 | 2009-01-13 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method for the same, and light source |
US7514860B2 (en) | 2004-10-28 | 2009-04-07 | Dowa Electronics Materials Co., Ltd. | Phosphor mixture and light emitting device |
US7524437B2 (en) | 2005-03-04 | 2009-04-28 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method of the same, and light emitting device using the phosphor |
US7527748B2 (en) | 2004-08-02 | 2009-05-05 | Dowa Electronics Materials Co., Ltd. | Phosphor and phosphor film for electron beam excitation and color display apparatus using the same |
US7794624B2 (en) * | 2002-10-16 | 2010-09-14 | Nichia Corporation | Oxynitride phosphor and production process thereof, and light-emitting device using oxynitride phosphor |
US7804237B2 (en) | 2005-04-26 | 2010-09-28 | Osram Gesellschaft mit beschränkter Haftung | Luminescence conversion of LED including two phosphors |
US7857994B2 (en) | 2007-05-30 | 2010-12-28 | GE Lighting Solutions, LLC | Green emitting phosphors and blends thereof |
US7897064B2 (en) * | 2004-09-09 | 2011-03-01 | Showa Denko K.K. | Oxynitride-based fluorescent material and method for production thereof |
US7965031B2 (en) | 2003-09-24 | 2011-06-21 | Osram Gesellschaft mit beschränkter Haftung | White-emitting LED having a defined color temperature |
DE102009055185A1 (en) | 2009-12-22 | 2011-06-30 | Osram Gesellschaft mit beschränkter Haftung, 81543 | Phosphor and light source with such phosphor |
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Also Published As
Publication number | Publication date |
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WO2004030109A8 (en) | 2004-06-10 |
EP1413618A1 (en) | 2004-04-28 |
TW200408149A (en) | 2004-05-16 |
CN100592537C (en) | 2010-02-24 |
CN1596478A (en) | 2005-03-16 |
DE60307415T2 (en) | 2007-03-29 |
US20050205845A1 (en) | 2005-09-22 |
DE60307415D1 (en) | 2006-09-21 |
JP2005530917A (en) | 2005-10-13 |
US7351356B2 (en) | 2008-04-01 |
TWI283078B (en) | 2007-06-21 |
JP3851331B2 (en) | 2006-11-29 |
ATE335800T1 (en) | 2006-09-15 |
EP1449264A1 (en) | 2004-08-25 |
EP1449264B1 (en) | 2006-08-09 |
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