JP2020106831A - 波長変換部材及び発光装置 - Google Patents
波長変換部材及び発光装置 Download PDFInfo
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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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/12—Compositions for glass with special properties for luminescent glass; for fluorescent glass
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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
- C09K11/7706—Aluminates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
-
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/30—Semiconductor lasers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0087—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
Abstract
Description
図1は、本発明の一実施形態に係る波長変換部材を示す模式的断面図である。図1に示すように、波長変換部材10は、マトリクス1中に蛍光体粒子2を含有する。また、第1の主面11と、第2の主面12を有する。
本発明のマトリクス1は、内部に蛍光体粒子2を含有することができ、励起光A及び合成光Bを透過する透明材料であれば特に限定されない。例えば、樹脂やガラスを用いることができる。耐熱性及び耐候性の高い波長変換部材10を得るという観点からは、ガラスを用いることが好ましい。また、軽量な波長変換部材10を得るという観点からは、樹脂を用いることが好ましい。
蛍光体粒子2は、蛍光の一部を吸収するものであってもよく、その場合、本発明の効果を享受しやすくなる。ここで「蛍光の一部を吸収する」とは、励起波長域と発光波長域が重なることを意味し、具体的には、図4に示すように、励起スペクトルの最大ピーク強度が5%以上である波長域において、蛍光スペクトルと重なりを有することを意味する。
本発明の波長変換部材10は、散乱材3を含有することが好ましい。散乱材3は特に限定されず、セラミック粉末やガラス粉末等の無機粒子を用いることができる。特にセラミック粉末を用いることが好ましい。一般的に、セラミック粉末はマトリクス1を構成する樹脂やガラスなどの透明材料より熱拡散性が大きいため、蛍光体粒子2が蛍光を発する際に生じる熱を波長変換部材10の外部へ効率的に逃がすことができ、蛍光体粒子2の熱による劣化を抑制することができる。なお、ガラス粉末は、屈折率の微調節が容易であることから、波長変換部材10のヘイズ値を精密に調節しやすいという点で好ましい。
図5は、本発明の一実施形態に係る発光装置を示す模式的断面図である。図5に示すように、発光装置50は、波長変換部材10と光源6を備えている。本実施形態では、光源6は、励起光Aが第2の主面12に入射するように配置されている。光源6から出射された励起光Aは、波長変換部材10により、励起光Aよりも波長の長い蛍光に波長変換される。また、励起光Aの一部は波長変換部材10を透過する。このため、波長変換部材10からは、励起光Aと蛍光との合成光Bが出射する。例えば、励起光Aが青色光であり、蛍光が黄色光である場合、白色の合成光Bを得ることができる。
ガラスA粉末 − ホウケイ酸ガラス(SiO2−B2O3系ガラス)、屈折率(nd):1.58、密度:3.1g/cm3、平均粒子径D50:2.5μm、軟化点:850℃
ガラスB粉末 − アルカリホウケイ酸ガラス(SiO2−B2O3−RO系ガラス)、屈折率(nd):1.46、密度:2.1g/cm3、平均粒子径D50:2.5μm、軟化点:825℃
樹脂C − 光硬化性樹脂、屈折率(nd):1.58、密度:2.4g/cm3
樹脂D − シリコーン樹脂、屈折率(nd):1.46、密度:2.0g/cm3
樹脂E − 光硬化性樹脂、屈折率(nd):1.51、密度:2.4g/cm3
2 蛍光体粒子
2a 蛍光体粒子
2b 蛍光体粒子
3 散乱材
6 光源
10 波長変換部材
11 第1の主面
12 第2の主面
20 波長変換部材
30 波長変換部材
50 発光装置
A 励起光
B 合成光
C 蛍光
D 戻り光
E 蛍光
Claims (8)
- マトリクス中に蛍光体粒子を含有する波長変換部材であって、
前記蛍光体粒子の励起スペクトルにおけるスペクトル強度が、最大ピーク強度の5%以下となる可視光波長域において、ヘイズ値が0.7〜0.999であることを特徴とする波長変換部材。 - 前記マトリクスがガラスであることを特徴とする、請求項1に記載の波長変換部材。
- 前記蛍光体粒子が蛍光の一部を吸収することを特徴とする、請求項1又は2に記載の波長変換部材。
- 前記蛍光体粒子が、ガーネット系セラミック蛍光体粒子であることを特徴とする、請求項1〜3のいずれか一項に記載の波長変換部材。
- 散乱材を含有することを特徴とする、請求項1〜4のいずれか一項に記載の波長変換部材。
- 前記波長変換部材の厚みが1000μm以下であることを特徴とする、請求項1〜5のいずれか一項に記載の波長変換部材。
- 請求項1〜6のいずれか一項に記載の波長変換部材と、波長変換部材に励起光を照射する光源を備えてなることを特徴とする、発光装置。
- 光源が発光ダイオード又はレーザーダイオードであることを特徴とする、請求項7に記載の発光装置。
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PCT/JP2019/049764 WO2020137780A1 (ja) | 2018-12-27 | 2019-12-19 | 波長変換部材及び発光装置 |
US17/293,940 US20220011483A1 (en) | 2018-12-27 | 2019-12-19 | Wavelength conversion member and light emitting device |
CN201980086378.9A CN113227320A (zh) | 2018-12-27 | 2019-12-19 | 波长转换部件和发光装置 |
DE112019006473.8T DE112019006473T5 (de) | 2018-12-27 | 2019-12-19 | Wellenlängen-umwandlungselement und licht emittierende vorrichtung |
TW108147562A TW202033745A (zh) | 2018-12-27 | 2019-12-25 | 波長轉換構件及發光裝置 |
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JP2012009470A (ja) * | 2010-06-22 | 2012-01-12 | Nitto Denko Corp | 半導体発光装置 |
JP2012028666A (ja) * | 2010-07-27 | 2012-02-09 | Nitto Denko Corp | 発光装置用部品、発光装置およびその製造方法 |
JP2012038754A (ja) * | 2010-08-03 | 2012-02-23 | Nitto Denko Corp | 発光装置 |
JP2013197325A (ja) * | 2012-03-21 | 2013-09-30 | Nippon Electric Glass Co Ltd | 波長変換部材および発光デバイス |
JP2014187147A (ja) * | 2013-03-22 | 2014-10-02 | Stanley Electric Co Ltd | 発光装置、および、その製造方法 |
KR20180107639A (ko) * | 2017-03-22 | 2018-10-02 | 신화인터텍 주식회사 | 파장 변환 부재 및 이를 포함하는 디스플레이 장치 |
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TW383508B (en) | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
JP4158012B2 (ja) | 2002-03-06 | 2008-10-01 | 日本電気硝子株式会社 | 発光色変換部材 |
JP2011222751A (ja) * | 2010-04-09 | 2011-11-04 | Nippon Electric Glass Co Ltd | 波長変換部材およびそれを用いてなる半導体発光素子デバイス |
WO2016159366A1 (ja) * | 2015-04-02 | 2016-10-06 | 凸版印刷株式会社 | 量子ドット保護フィルム並びにこれを用いて得られる波長変換シート及びバックライトユニット |
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- 2019-12-13 JP JP2019225084A patent/JP2020106831A/ja active Pending
- 2019-12-19 CN CN201980086378.9A patent/CN113227320A/zh active Pending
- 2019-12-19 DE DE112019006473.8T patent/DE112019006473T5/de active Pending
- 2019-12-25 TW TW108147562A patent/TW202033745A/zh unknown
Patent Citations (6)
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JP2012009470A (ja) * | 2010-06-22 | 2012-01-12 | Nitto Denko Corp | 半導体発光装置 |
JP2012028666A (ja) * | 2010-07-27 | 2012-02-09 | Nitto Denko Corp | 発光装置用部品、発光装置およびその製造方法 |
JP2012038754A (ja) * | 2010-08-03 | 2012-02-23 | Nitto Denko Corp | 発光装置 |
JP2013197325A (ja) * | 2012-03-21 | 2013-09-30 | Nippon Electric Glass Co Ltd | 波長変換部材および発光デバイス |
JP2014187147A (ja) * | 2013-03-22 | 2014-10-02 | Stanley Electric Co Ltd | 発光装置、および、その製造方法 |
KR20180107639A (ko) * | 2017-03-22 | 2018-10-02 | 신화인터텍 주식회사 | 파장 변환 부재 및 이를 포함하는 디스플레이 장치 |
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CN113227320A (zh) | 2021-08-06 |
DE112019006473T5 (de) | 2021-09-16 |
TW202033745A (zh) | 2020-09-16 |
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