JP6034772B2 - 改良された光抽出効果を有する発光ダイオード - Google Patents
改良された光抽出効果を有する発光ダイオード Download PDFInfo
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- JP6034772B2 JP6034772B2 JP2013212920A JP2013212920A JP6034772B2 JP 6034772 B2 JP6034772 B2 JP 6034772B2 JP 2013212920 A JP2013212920 A JP 2013212920A JP 2013212920 A JP2013212920 A JP 2013212920A JP 6034772 B2 JP6034772 B2 JP 6034772B2
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- 230000000694 effects Effects 0.000 title description 2
- 230000003287 optical effect Effects 0.000 claims description 187
- 239000000463 material Substances 0.000 claims description 64
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- 239000011521 glass Substances 0.000 claims description 21
- 239000005304 optical glass Substances 0.000 claims description 12
- 238000001465 metallisation Methods 0.000 claims description 11
- 239000002159 nanocrystal Substances 0.000 claims description 4
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- 238000000034 method Methods 0.000 description 24
- 239000008393 encapsulating agent Substances 0.000 description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
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- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
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- 239000010980 sapphire Substances 0.000 description 3
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 3
- 238000000927 vapour-phase epitaxy Methods 0.000 description 3
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 3
- 229910004613 CdTe Inorganic materials 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
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- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical class [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
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- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910001512 metal fluoride Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
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- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 229910017115 AlSb Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910005542 GaSb Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000001015 X-ray lithography Methods 0.000 description 1
- 229910007709 ZnTe Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000005387 chalcogenide glass Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000609 electron-beam lithography Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000025 interference lithography Methods 0.000 description 1
- 238000002164 ion-beam lithography Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009103 reabsorption Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- 238000001039 wet etching Methods 0.000 description 1
Classifications
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- H01L33/58—
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- H01L33/32—
-
- H01L33/405—
-
- H01L33/502—
-
- H01L33/62—
-
- H01L33/20—
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- Led Device Packages (AREA)
- Led Devices (AREA)
Description
本発明は、広くは発光ダイオードに関し、より詳細には高められた光抽出効率を有する発光ダイオードに関する。
発光ダイオード(LED)の光抽出効率は、LEDの内部量子効率に対するLEDの外部量子効率の比率として定義される。典型的には、実装されたLEDの光抽出効率は大幅に1より小さく、すなわち、LEDの活性領域で発生された光の多くは外部環境に到達しない。
改良された光抽出効率を有する発光デバイスが提供される。発光デバイスは、活性領域を備える半導体層を含む層のスタックを有する。該スタックは透明な光学素子に接合される。
図1Aには、本発明の実施形態にかかる、互いに接合される透明な光学素子2および発光ダイオード(LED)ダイ4が示されている。図1Bでは、本発明の一実施形態に基づいて、透明光学素子2が、透明接合層6を用いてLEDダイ4に接合される。
Claims (8)
- 活性領域を備える半導体層を含む層のスタックを有する発光デバイスであって、
前記スタックの表面に接合層によって接合される透明な光学素子を具備し、
前記接合層は、1.8より大きい屈折率を有するガラス、ショットガラスSF59、ショットガラスLaSF3、及びショットガラスLaSFN18のうちの一つであり、
前記光学素子は、前記接合層と異なる材料からなり、
前記光学素子は、少なくとも一部に球面を有し、前記接合層に向けられた前記光学素子の底面は全体にわたって平坦であり、
当該発光デバイスは更に、前記光学素子の前記底面上に形成され且つ前記スタックの電気コンタクトに直接的に接続された金属化層を有し、かつ、
前記スタックの表面の長さに対する前記光学素子の前記底面の長さの比は2より大きい、
発光デバイス。 - 前記接合層中に含まれたルミネセンス材料をさらに含む、請求項1に記載の発光デバイス。
- 前記ルミネセンス材料は、量子ドット及びナノクリスタルのうちの一つである、請求項2に記載の発光デバイス。
- 前記光学素子中に含まれたルミネセンス材料をさらに含む、請求項1に記載の発光デバイス。
- 活性領域を備える半導体層を含む層のスタックを有する発光デバイスであって、
前記スタックの表面に接合層によって接合される透明な光学素子を具備し、
前記接合層は、1.8より大きい屈折率を有するガラス、ショットガラスSF59、ショットガラスLaSF3、及びショットガラスLaSFN18のうちの一つであり、かつ、ルミネセンス材料を含む光学ガラス材料であり、
前記光学素子は、少なくとも一部に球面を有し、前記接合層に向けられた前記光学素子の底面は全体にわたって平坦であり、
当該発光デバイスは更に、前記光学素子の前記底面上に形成され且つ前記スタックの電気コンタクトに直接的に接続された金属化層を有し、かつ、
前記スタックの表面の長さに対する前記光学素子の前記底面の長さの比は2より大きい、
発光デバイス。 - 前記ルミネセンス材料は、量子ドット及びナノクリスタルのうちの一つである、請求項5に記載の発光デバイス。
- 前記光学素子中に含まれたルミネセンス材料をさらに含む、請求項5に記載の発光デバイス。
- 活性領域を備える半導体層を含む層のスタックを有する発光デバイスであって、
前記スタックの表面に接合層によって接合される透明な光学素子を具備し、
前記接合層は、1.8より大きい屈折率を有するガラス、ショットガラスSF59、ショットガラスLaSF3、及びショットガラスLaSFN18のうちの一つであり、
前記光学素子は、少なくとも一部に球面を有し、前記接合層に向けられた前記光学素子の底面は全体にわたって平坦であり、
当該発光デバイスは更に、前記光学素子の前記底面上に形成され且つ前記スタックの電気コンタクトに直接的に接続された金属化層を有し、かつ、
前記スタックの表面の長さに対する前記光学素子の前記底面の長さの比は2より大きい、
発光デバイス。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/660,317 US7053419B1 (en) | 2000-09-12 | 2000-09-12 | Light emitting diodes with improved light extraction efficiency |
US09/660317 | 2000-09-12 | ||
US09/880204 | 2001-06-12 | ||
US09/880,204 US7064355B2 (en) | 2000-09-12 | 2001-06-12 | Light emitting diodes with improved light extraction efficiency |
Related Parent Applications (1)
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JP2001321214A Division JP2002141556A (ja) | 2000-09-12 | 2001-09-12 | 改良された光抽出効果を有する発光ダイオード |
Publications (2)
Publication Number | Publication Date |
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JP2014013941A JP2014013941A (ja) | 2014-01-23 |
JP6034772B2 true JP6034772B2 (ja) | 2016-11-30 |
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JP2001321214A Pending JP2002141556A (ja) | 2000-09-12 | 2001-09-12 | 改良された光抽出効果を有する発光ダイオード |
JP2012158925A Expired - Lifetime JP5662385B2 (ja) | 2000-09-12 | 2012-07-17 | 改良された光抽出効果を有する発光ダイオード |
JP2013212920A Expired - Lifetime JP6034772B2 (ja) | 2000-09-12 | 2013-10-10 | 改良された光抽出効果を有する発光ダイオード |
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JP2001321214A Pending JP2002141556A (ja) | 2000-09-12 | 2001-09-12 | 改良された光抽出効果を有する発光ダイオード |
JP2012158925A Expired - Lifetime JP5662385B2 (ja) | 2000-09-12 | 2012-07-17 | 改良された光抽出効果を有する発光ダイオード |
Country Status (2)
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US (6) | US7279345B2 (ja) |
JP (3) | JP2002141556A (ja) |
Families Citing this family (87)
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JP2002141556A (ja) * | 2000-09-12 | 2002-05-17 | Lumileds Lighting Us Llc | 改良された光抽出効果を有する発光ダイオード |
JP2003017756A (ja) * | 2001-06-28 | 2003-01-17 | Toyoda Gosei Co Ltd | 発光ダイオード |
US8545629B2 (en) | 2001-12-24 | 2013-10-01 | Crystal Is, Inc. | Method and apparatus for producing large, single-crystals of aluminum nitride |
CN1777999B (zh) * | 2003-02-26 | 2010-05-26 | 美商克立股份有限公司 | 复合式白色光源及其制造方法 |
US20040173808A1 (en) * | 2003-03-07 | 2004-09-09 | Bor-Jen Wu | Flip-chip like light emitting device package |
EP2264798B1 (en) | 2003-04-30 | 2020-10-14 | Cree, Inc. | High powered light emitter packages with compact optics |
US7005679B2 (en) | 2003-05-01 | 2006-02-28 | Cree, Inc. | Multiple component solid state white light |
WO2005001944A1 (ja) * | 2003-06-26 | 2005-01-06 | Nippon Sheet Glass Company, Limited | レンズ付き発光素子およびその製造方法 |
JP4479357B2 (ja) * | 2003-06-26 | 2010-06-09 | 富士ゼロックス株式会社 | レンズ付き発光素子、レンズ付き発光素子アレイ、自己走査型発光素子アレイ、書込みヘッドおよび光プリンタ |
US7009213B2 (en) * | 2003-07-31 | 2006-03-07 | Lumileds Lighting U.S., Llc | Light emitting devices with improved light extraction efficiency |
DE10351397A1 (de) * | 2003-10-31 | 2005-06-16 | Osram Opto Semiconductors Gmbh | Lumineszenzdiodenchip |
JP4339156B2 (ja) | 2004-03-18 | 2009-10-07 | 株式会社小糸製作所 | 車両用灯具ユニット |
US7781789B2 (en) * | 2006-11-15 | 2010-08-24 | The Regents Of The University Of California | Transparent mirrorless light emitting diode |
EP1794814A1 (en) * | 2004-09-23 | 2007-06-13 | Koninklijke Philips Electronics N.V. | Light-emitting device |
US20060091411A1 (en) | 2004-10-29 | 2006-05-04 | Ouderkirk Andrew J | High brightness LED package |
US7462502B2 (en) * | 2004-11-12 | 2008-12-09 | Philips Lumileds Lighting Company, Llc | Color control by alteration of wavelength converting element |
US7419839B2 (en) * | 2004-11-12 | 2008-09-02 | Philips Lumileds Lighting Company, Llc | Bonding an optical element to a light emitting device |
US20060171152A1 (en) * | 2005-01-20 | 2006-08-03 | Toyoda Gosei Co., Ltd. | Light emitting device and method of making the same |
US7341878B2 (en) * | 2005-03-14 | 2008-03-11 | Philips Lumileds Lighting Company, Llc | Wavelength-converted semiconductor light emitting device |
US8748923B2 (en) | 2005-03-14 | 2014-06-10 | Philips Lumileds Lighting Company Llc | Wavelength-converted semiconductor light emitting device |
DE102005023134A1 (de) * | 2005-05-19 | 2006-11-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lumineszenzkonversions-LED |
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Also Published As
Publication number | Publication date |
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US20140191265A1 (en) | 2014-07-10 |
JP5662385B2 (ja) | 2015-01-28 |
US20170301838A1 (en) | 2017-10-19 |
US7279345B2 (en) | 2007-10-09 |
US20120021543A1 (en) | 2012-01-26 |
US20050032257A1 (en) | 2005-02-10 |
JP2012256899A (ja) | 2012-12-27 |
US20100148151A1 (en) | 2010-06-17 |
US10312422B2 (en) | 2019-06-04 |
US9583683B2 (en) | 2017-02-28 |
JP2002141556A (ja) | 2002-05-17 |
US8628985B2 (en) | 2014-01-14 |
US20080023719A1 (en) | 2008-01-31 |
US8415694B2 (en) | 2013-04-09 |
US8049234B2 (en) | 2011-11-01 |
JP2014013941A (ja) | 2014-01-23 |
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