JP6462274B2 - 半導体発光素子 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 145
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 214
- 239000010408 film Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 150000002926 oxygen Chemical class 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 238000000927 vapour-phase epitaxy Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910005887 NiSn Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 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
- 229910010271 silicon carbide Inorganic materials 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
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
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- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/10—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00
- H10H29/14—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 comprising multiple light-emitting semiconductor components
- H10H29/142—Two-dimensional arrangements, e.g. asymmetric LED layout
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of semiconductor or other solid state devices
- H01L25/03—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00
- H01L25/0753—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00 the devices being arranged next to each other
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/858—Means for heat extraction or cooling
- H10H20/8585—Means for heat extraction or cooling being an interconnection
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/819—Bodies characterised by their shape, e.g. curved or truncated substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
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- H10H20/80—Constructional details
- H10H20/83—Electrodes
- H10H20/831—Electrodes characterised by their shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/83—Electrodes
- H10H20/832—Electrodes characterised by their material
- H10H20/835—Reflective materials
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- H10H20/80—Constructional details
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- H10H20/841—Reflective coatings, e.g. dielectric Bragg reflectors
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Description
なお、図面は模式的または概念的なものであり、各部分の厚みと幅との関係、部分間の大きさの比率などは、必ずしも現実のものと同一とは限らない。また、同じ部分を表す場合であっても、図面により互いの寸法や比率が異なって表される場合もある。
なお、本願明細書と各図において、既出の図に関して前述したものと同様の要素には同一の符号を付して詳細な説明は適宜省略する。
図1は、第1の実施形態に係る半導体発光素子を例示する模式的断面図である。
図2は、第1の実施形態に係る半導体発光素子を例示する模式的透視平面図である。
図を見やすくするために、図2の透視平面図においては、図1の断面図に示す構成要素の一部の図示を省略する。
上記の半導体層のそれぞれには、例えば窒化物半導体が用いられる。
参考例に係る半導体発光素子199においては、第1素子間配線11がp側の第2導電層e2まで延在している。すなわち、この参考例によれば、p側の第2導電層e2と、保護金属層70と、第1素子間配線11と、が重なる。この重なり部分により素子の積層方向の厚さが部分的に厚くなる。すなわち、絶縁層60の接合面に凹凸が形成される。このため、金属層40により絶縁層60と基体50とを接合するときに凸部に応力が加わり、素子が破壊される可能性がある。素子が破壊しない場合にも、素子内に応力が蓄積され、信頼性が低下する場合がある。絶縁層60が段切れし金属層40と短絡することで素子がリークする場合がある。
図4は、第2の実施形態に係る半導体発光素子を例示する模式的断面図である。
図4は、第1積層体100aと第2積層体200bとの間の別の配線構造を例示する。 図4に表すように、本実施形態に係る半導体発光素子111は、第1積層体100aと、第2積層体100bと、を含む。なお、この例においては、金属層40及び基体50の図示を省略する。本実施形態においては、n側の第1素子間配線11と、p側の第2素子間配線12との重なり部分は、Z軸方向において第3半導体層10bと重なる。
この例においては、第1積層体100aと第2積層体100bとの間の配線構造について示す。
Claims (6)
- 基体と、
前記基体と第1方向において離間し、第1領域と、前記第1方向と交差する方向において前記第1領域と並ぶ第2領域と、を含む第1導電形の第1半導体層と、
前記基体と前記第1領域との間に設けられた第2導電形の第2半導体層と、
前記第1領域と前記第2半導体層との間に設けられた第1発光層と、
前記基体と前記第2領域との間に設けられ前記第2領域と電気的に接続された第1導電層と、
前記第2導電形の第4半導体層と、
前記基体と前記第1方向において離間した前記第1導電形の第3半導体層であって、前記第1半導体層と前記第3半導体層との間に分離溝が設けられ、前記第3半導体層は、前記第4半導体層に対応する第3領域と、前記分離溝と前記第3領域との間の領域と、を含み、前記第4半導体層は、前記基体と前記第3領域との間に設けられた、前記第3半導体層と、
前記第3領域と前記第4半導体層との間に設けられた第2発光層と、
前記基体と前記第4半導体層との間に設けられ前記第4半導体層と電気的に接続された第2導電層と、
第1端部と第2端部とを含む第1素子間配線であって、前記第1端部は、前記基体と前記第1導電層との間に位置し前記第1導電層と電気的に接続され、前記第2端部は、前記第2導電層と重ならない、前記第1素子間配線と、
第3端部と第4端部とを含む第2素子間配線であって、前記第3端部は、前記基体と前記第2導電層との間に位置し前記第2導電層と電気的に接続され、前記第4端部は、前記第2端部と電気的に接続された、前記第2素子間配線と、
前記基体と前記第1素子間配線との間、及び、前記基体と前記第2素子間配線との間に設けられた絶縁層と、
前記基体と前記絶縁層との間に設けられた金属層と、
前記第3半導体層と前記第2素子間配線との間、及び、前記第2発光層と前記第2素子間配線との間に設けられた素子間絶縁層と、
を備え、
前記第1領域、前記第1発光層及び前記第2半導体層を含む部分と、前記第2領域と、の間に第1段差が形成され、
前記第3領域、前記第2発光層及び前記第4半導体層を含む部分と、前記分離溝と前記第3領域との間の前記領域と、の間に第2段差が形成され、
前記第2素子間配線の一部は、前記分離溝、前記分離溝と前記第3領域との間の前記領域、及び、前記第2段差と、重なり、
前記第1素子間配線の厚さは、前記第2素子間配線の厚さよりも厚く、
前記第2端部と前記第4端部とが重なる領域は、前記第2半導体層と重ならず、前記第4半導体層と重ならず、
前記第2端部が前記絶縁層と接合する部分の前記第1方向の位置と、前記第3端部が前記絶縁層と接合する部分の前記第1方向の位置と、の間の前記第1方向に沿う距離は、前記第2段差よりも小さく、
前記絶縁層は、前記金属層のうちの前記第2領域と重なる部分よりも薄く、
前記絶縁層と前記金属層との接合面は平坦であり、前記接合面の前記第2端部と重なる部分の前記第1方向における位置と、前記接合面の前記第4半導体層と重なる部分の前記第1方向における位置と、の間の前記第1方向に沿う距離は、前記第2段差よりも小さい、半導体発光素子。 - 前記第2端部と前記第4端部とが重なる前記領域は、前記第1半導体層と重ならない、請求項1記載の半導体発光素子。
- 前記第2端部と前記第4端部とが重なる前記領域は、前記第3半導体層と重ならない、請求項2記載の半導体発光素子。
- 前記第2端部は、前記第4端部と前記絶縁層との間に位置する請求項1〜3のいずれか1つに記載の半導体発光素子。
- 前記第4端部は、前記第2端部と前記素子間絶縁層との間に位置する請求項1〜3のいずれか1つに記載の半導体発光素子。
- 前記第1素子間配線は、アルミニウムを含み、
前記第2素子間配線は、銀を含む請求項1〜5のいずれか1つに記載の半導体発光素子。
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JP2014168803A JP6462274B2 (ja) | 2014-08-21 | 2014-08-21 | 半導体発光素子 |
US14/823,193 US9590009B2 (en) | 2014-08-21 | 2015-08-11 | Semiconductor light emitting element |
KR1020150114560A KR20160023560A (ko) | 2014-08-21 | 2015-08-13 | 반도체 발광 소자 |
CN201510507533.3A CN105390584A (zh) | 2014-08-21 | 2015-08-18 | 半导体发光元件 |
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JP2017059645A (ja) * | 2015-09-15 | 2017-03-23 | 株式会社東芝 | 半導体発光素子 |
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US11177417B2 (en) * | 2017-02-13 | 2021-11-16 | Nichia Corporation | Light emitting device including phosphor layer with protrusions and recesses and method for manufacturing same |
JP6645486B2 (ja) * | 2017-02-13 | 2020-02-14 | 日亜化学工業株式会社 | 発光装置およびその製造方法 |
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JP3904571B2 (ja) | 2004-09-02 | 2007-04-11 | ローム株式会社 | 半導体発光装置 |
JP4359263B2 (ja) | 2005-05-18 | 2009-11-04 | ローム株式会社 | 半導体発光装置 |
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2014
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2015
- 2015-08-11 US US14/823,193 patent/US9590009B2/en active Active
- 2015-08-13 KR KR1020150114560A patent/KR20160023560A/ko not_active Ceased
- 2015-08-18 CN CN201510507533.3A patent/CN105390584A/zh active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2017059645A (ja) * | 2015-09-15 | 2017-03-23 | 株式会社東芝 | 半導体発光素子 |
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US9590009B2 (en) | 2017-03-07 |
US20160056341A1 (en) | 2016-02-25 |
KR20160023560A (ko) | 2016-03-03 |
CN105390584A (zh) | 2016-03-09 |
JP2016046351A (ja) | 2016-04-04 |
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