JP4823300B2 - 半導体発光装置 - Google Patents
半導体発光装置 Download PDFInfo
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- JP4823300B2 JP4823300B2 JP2008321406A JP2008321406A JP4823300B2 JP 4823300 B2 JP4823300 B2 JP 4823300B2 JP 2008321406 A JP2008321406 A JP 2008321406A JP 2008321406 A JP2008321406 A JP 2008321406A JP 4823300 B2 JP4823300 B2 JP 4823300B2
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- 150000004645 aluminates Chemical class 0.000 claims description 3
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- MQPTWOKRVMPEQH-UHFFFAOYSA-N OB(O)O.OP(O)(O)=O.P Chemical compound OB(O)O.OP(O)(O)=O.P MQPTWOKRVMPEQH-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- 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
- H01L33/64—Heat extraction or cooling elements
- H01L33/644—Heat extraction or cooling elements in intimate contact or integrated with parts of the device other than the semiconductor body
-
- 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
-
- 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
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02255—Out-coupling of light using beam deflecting elements
-
- 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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
- H01S5/32341—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm blue laser based on GaN or GaP
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Led Device Packages (AREA)
Description
本実施形態に係る半導体発光装置は、図3に示すように、励起光源としてLD11を用い、その光路に沿って細長い蛍光体層12が設けられ、その上面を除く面が放熱ブロック13により覆われた構造を有する。即ち、放熱材からなる放熱ブロック13の上面に、細長い半円柱状又はボート状の凹部が形成され、その凹部内の中央に励起光源としてのLD11が配置され、その周囲で凹部内に蛍光体層12が充填されている。
図5に、励起光源としてLD21を適用し、蛍光体層22の一部が放熱材と接触する構成の半導体発光装置の構造模式図を示す。装置本体20は、3mm×6mm×6mmの直方体状をしており、ほとんどの箇所は熱伝導性に優れるAlNからなり、本発明における放熱材を構成する。装置本体20内の中央に配置された台27上に設置されたLD21は、左右両方向に励起LD光24を射出する。装置本体20の左右の壁23には、0.3mm×3mmのスリット26が形成され、このスリット26内に蛍光体層22が形成されている。
Claims (18)
- 半導体レーザと、前記半導体レーザからの励起光によって励起される蛍光体を含有する蛍光体層とを具備し、前記励起光の光路は広がり角を有し、前記蛍光体層は、前記励起光の光路断面の大きさより小さい領域内に断面を有するように形成され、前記蛍光体層の少なくとも一部に接して、前記蛍光体層よりも熱伝導係数の高い放熱材が配置されていることを特徴とする半導体発光装置。
- 前記蛍光体層は、前記半導体レーザの端面からの距離が2mmの位置において、0.4mm以上の径を有することを特徴とする請求項1に記載の半導体発光装置。
- 前記半導体レーザの励起光は、200mW/mm 2 以上の光出力密度を有することを特徴とする請求項1又は2に記載の半導体発光装置。
- 複数の半導体レーザを用いることを特徴とする請求項1に記載の半導体発光装置。
- 前記蛍光体層は、前記半導体レーザからの最大励起光密度が1000mW/mm2以下の領域に形成されることを特徴とする請求項1〜4のいずれかに記載の半導体発光装置。
- 前記半導体レーザは、III族窒化物化合物半導体を材料とする半導体レーザであることを特徴とする請求項1〜5のいずれかに記載の半導体発光装置。
- 前記蛍光体層からの発光の少なくとも一部が、可視光であることを特徴とする請求項1〜5のいずれかに記載の半導体発光装置。
- 前記放熱材が金属であることを特徴とする請求項1〜7のいずれかに記載の半導体発光装置。
- 前記蛍光体層中の蛍光体の体積濃度が、前記半導体レーザの近傍では低く、遠い領域では高い濃度分布を有することを特徴とする請求項1〜8のいずれかに記載の半導体発光装置。
- 前記半導体レーザの励起光射出面から光路方向1mm以内には蛍光体を含まない層が設けられていることを特徴とする請求項1〜9のいずれかに記載の半導体発光装置。
- 前記蛍光体層の母材が透光性の樹脂、ガラス、焼結体又はセラミックス系材料のいずれかにより形成されていることを特徴とする請求項1〜10のいずれかに記載の半導体発光装置。
- 前記蛍光体が、ケイ酸塩系蛍光体材料、アルミン酸塩系蛍光体材料、窒化物系蛍光体材料、硫化物系蛍光体材料、酸硫化物系蛍光体材料、YAG系蛍光体材料、リン酸塩ホウ酸塩系蛍光体材料、又はハロリン酸塩系蛍光体材料のいずれかであることを特徴とする請求項1〜11のいずれかに記載の半導体発光装置。
- 前記蛍光体は、青色発光蛍光体材料、緑色発光蛍光体材料、黄色発光蛍光体材料、赤色発光蛍光体材料、又は白色発光蛍光体材料のいずれかであることを特徴とする請求項1〜12のいずれかに記載の半導体発光装置。
- 前記蛍光体層が、励起光の光路方向に沿って長い円柱状であることを特徴とする請求項1〜13のいずれかに記載の半導体発光装置。
- 前記蛍光体層が、半導体レーザからの励起光の光路に近似し、励起光の光路方向に沿って長い円錐状であることを特徴とする請求項1〜14のいずれかに記載の半導体発光装置。
- 前記励起光が入射する蛍光体層の端面の形状が凸レンズ形状であることを特徴とする請求項1〜15のいずれかに記載の半導体発光装置。
- 前記半導体レーザと前記蛍光体層との間に、前記蛍光体層の屈折率よりも小さい屈折率を有する材料からなる層が設けられていることを特徴とする請求項1〜16のいずれかに記載の半導体発光装置。
- 前記半導体レーザは直方体状筐体内に配置され、前記半導体レーザの励起光射出面に対向する前記直方体状筐体の壁体は前記放熱材により形成され、前記壁体は、励起光の入射領域にスリットを有し、このスリット内に前記蛍光体層が設けられていることを特徴とする請求項1〜14のいずれかに記載の半導体発光装置。
Priority Applications (2)
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JP2008321406A JP4823300B2 (ja) | 2008-12-17 | 2008-12-17 | 半導体発光装置 |
US12/638,354 US7985981B2 (en) | 2008-12-17 | 2009-12-15 | Semiconductor light-emitting device |
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JP2008321406A JP4823300B2 (ja) | 2008-12-17 | 2008-12-17 | 半導体発光装置 |
Publications (2)
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JP2010147183A JP2010147183A (ja) | 2010-07-01 |
JP4823300B2 true JP4823300B2 (ja) | 2011-11-24 |
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US (1) | US7985981B2 (ja) |
JP (1) | JP4823300B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10587091B2 (en) | 2014-04-18 | 2020-03-10 | Nichia Corporation | Light emitting device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4910010B2 (ja) * | 2009-03-24 | 2012-04-04 | 株式会社東芝 | 半導体発光装置 |
JP4929345B2 (ja) * | 2009-12-28 | 2012-05-09 | 株式会社東芝 | 発光装置 |
JP2011187285A (ja) * | 2010-03-08 | 2011-09-22 | Toshiba Corp | 発光装置 |
JP5039164B2 (ja) * | 2010-03-08 | 2012-10-03 | 株式会社東芝 | 発光装置 |
JP5161908B2 (ja) * | 2010-03-10 | 2013-03-13 | 株式会社東芝 | 発光装置 |
KR101859653B1 (ko) * | 2011-08-30 | 2018-05-18 | 삼성전자주식회사 | 액정 디스플레이 장치용 발광 유닛 및 그를 구비한 액정 디스플레이 장치 |
US10591124B2 (en) | 2012-08-30 | 2020-03-17 | Sabic Global Technologies B.V. | Heat dissipating system for a light, headlamp assembly comprising the same, and method of dissipating heat |
JP2017120864A (ja) | 2015-12-28 | 2017-07-06 | 株式会社タムラ製作所 | 発光装置 |
US11394176B2 (en) * | 2017-07-24 | 2022-07-19 | Panasonic Intellectual Property Management Co., Ltd. | Light emitting device |
US10222474B1 (en) | 2017-12-13 | 2019-03-05 | Soraa Laser Diode, Inc. | Lidar systems including a gallium and nitrogen containing laser light source |
WO2020044426A1 (ja) * | 2018-08-28 | 2020-03-05 | 日本碍子株式会社 | 蛍光体素子および照明装置 |
Family Cites Families (14)
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JP2927279B2 (ja) | 1996-07-29 | 1999-07-28 | 日亜化学工業株式会社 | 発光ダイオード |
JP4193446B2 (ja) | 2001-08-22 | 2008-12-10 | 日亜化学工業株式会社 | 発光装置 |
US7781787B2 (en) * | 2001-11-16 | 2010-08-24 | Toyoda Gosei, Co., Ltd. | Light-emitting diode, led light, and light apparatus |
JP2004111882A (ja) * | 2002-09-20 | 2004-04-08 | Toyoda Gosei Co Ltd | 発光装置 |
JP2004119634A (ja) * | 2002-09-25 | 2004-04-15 | Toshiba Lighting & Technology Corp | 発光装置 |
JP4100155B2 (ja) * | 2002-12-05 | 2008-06-11 | オムロン株式会社 | 発光光源、発光光源アレイ及び当該発光光源を用いた機器 |
US7391153B2 (en) * | 2003-07-17 | 2008-06-24 | Toyoda Gosei Co., Ltd. | Light emitting device provided with a submount assembly for improved thermal dissipation |
JP4445745B2 (ja) * | 2003-11-21 | 2010-04-07 | オリンパス株式会社 | 内視鏡装置 |
US7550319B2 (en) * | 2005-09-01 | 2009-06-23 | E. I. Du Pont De Nemours And Company | Low temperature co-fired ceramic (LTCC) tape compositions, light emitting diode (LED) modules, lighting devices and method of forming thereof |
US20070075306A1 (en) * | 2005-09-22 | 2007-04-05 | Toyoda Gosei Co., Ltd. | Light emitting device |
JP2008021973A (ja) * | 2006-06-13 | 2008-01-31 | Nichia Chem Ind Ltd | 発光装置 |
JP5036332B2 (ja) * | 2007-01-26 | 2012-09-26 | スタンレー電気株式会社 | 発光装置および色変換フィルター |
WO2008105527A1 (ja) * | 2007-03-01 | 2008-09-04 | Nec Lighting, Ltd. | Led装置及び照明装置 |
JP5193586B2 (ja) | 2007-12-25 | 2013-05-08 | 株式会社東芝 | 半導体発光装置 |
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2008
- 2008-12-17 JP JP2008321406A patent/JP4823300B2/ja active Active
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- 2009-12-15 US US12/638,354 patent/US7985981B2/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10587091B2 (en) | 2014-04-18 | 2020-03-10 | Nichia Corporation | Light emitting device |
US11112069B2 (en) | 2014-04-18 | 2021-09-07 | Nichia Corporation | Light emitting device |
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Publication number | Publication date |
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JP2010147183A (ja) | 2010-07-01 |
US20100148203A1 (en) | 2010-06-17 |
US7985981B2 (en) | 2011-07-26 |
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