JPWO2016079881A1 - 半導体パワーモジュールおよびその製造方法ならびに移動体 - Google Patents
半導体パワーモジュールおよびその製造方法ならびに移動体 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 219
- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000758 substrate Substances 0.000 claims abstract description 80
- 239000000463 material Substances 0.000 claims abstract description 60
- 229910017755 Cu-Sn Inorganic materials 0.000 claims description 61
- 229910017927 Cu—Sn Inorganic materials 0.000 claims description 61
- -1 Cu—Sn compound Chemical class 0.000 claims description 48
- 230000017525 heat dissipation Effects 0.000 claims description 20
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 14
- 229910019343 Sn—Cu—Sb Inorganic materials 0.000 claims description 12
- 239000000470 constituent Substances 0.000 claims description 3
- 229910000765 intermetallic Inorganic materials 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 180
- 229910045601 alloy Inorganic materials 0.000 abstract description 114
- 239000000956 alloy Substances 0.000 abstract description 114
- 239000000919 ceramic Substances 0.000 abstract description 37
- 229910052751 metal Inorganic materials 0.000 abstract description 19
- 239000002184 metal Substances 0.000 abstract description 19
- 239000010949 copper Substances 0.000 description 32
- 238000005304 joining Methods 0.000 description 21
- 238000007747 plating Methods 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 16
- 239000011800 void material Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 229910010271 silicon carbide Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 10
- 239000011888 foil Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000001465 metallisation Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 229910001374 Invar Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000962 AlSiC Inorganic materials 0.000 description 1
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 1
- 229910018471 Cu6Sn5 Inorganic materials 0.000 description 1
- 229910017932 Cu—Sb Inorganic materials 0.000 description 1
- 206010011906 Death Diseases 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910020888 Sn-Cu Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910019204 Sn—Cu Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
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- 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
- H01L2224/32225—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 non-metallic, e.g. insulating substrate with or without metallisation
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- H01L2224/481—Disposition
- H01L2224/48135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/48137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
- H01L2224/48139—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate with an intermediate bond, e.g. continuous wire daisy chain
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
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- 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
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- H01L2224/48227—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 non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
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- H01L2224/831—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus
- H01L2224/83101—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus as prepeg comprising a layer connector, e.g. provided in an insulating plate member
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- Condensed Matter Physics & Semiconductors (AREA)
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
図1は本発明の実施の形態の半導体装置の主要部の構造の一例を示す断面図、図2は本発明の実施の形態のはんだ接合部の接合前と接合後の構造の一例を示す部分断面図である。
図15は本発明の実施の形態の第1変形例の半導体パワーモジュールの構造を示す断面図である。図15に示す半導体モジュール(半導体パワーモジュール)33は、複数の半導体チップ33aと複数の半導体チップ33bが、セラミック基板5上に搭載されたパワーモジュールである。半導体チップ33aは、例えば、SiCから成るMOS(Metal Oxide Semiconductor)であり、半導体チップ33bは、例えば、SiCから成るダイオードである。この場合、半導体モジュール33は、フルSiCモジュール等とも呼ばれ、搭載されている各半導体チップがSiCから成る。
2,2b,2c, はんだ合金(接合材)
3 Niめっき層(Niメタライズ層)
5 セラミック基板(チップ支持部材、絶縁基板、被接続部材)
9 半導体装置(半導体モジュール、半導体パワーモジュール)
10 半導体モジュール(半導体装置、半導体パワーモジュール)
12 放熱用金属板(放熱ベース、放熱部材)
18,19,33,34 半導体モジュール(半導体装置、半導体パワーモジュール)
Claims (11)
- 半導体パワーモジュールであって、
半導体素子と、
前記半導体素子と接合する接合材と、
を有し、
前記半導体素子と絶縁基板とが、または、前記絶縁基板と放熱ベースとが、Cu1〜7重量%と、Sb3〜15重量%と、残部Snとからなる前記接合材によって接合され、
前記接合材は280℃以上の温度で接合された、半導体パワーモジュール。 - 請求項1に記載の半導体パワーモジュールにおいて
前記接合材の接合部の界面にCu−Snを主な構成元素とする金属間化合物が形成されている、半導体パワーモジュール。 - 半導体パワーモジュールであって、
半導体素子と、
前記半導体素子と接合する接合材と、
を有し、
前記半導体素子と絶縁基板との間、または、前記絶縁基板と放熱ベースとの間の接合部における第1のCu−Sn化合物、Sn−Cu−Sb層、第2のCu−Sn化合物のそれぞれの厚さを足した前記接合部の厚さ比を100とした場合、前記第1のCu−Sn化合物と前記第2のCu−Sn化合物の厚さの比は、1以上10以下である、半導体パワーモジュール。 - 請求項1乃至3のいずれか1項に記載の半導体パワーモジュールにおいて、
前記半導体素子の裏面、前記絶縁基板、または、前記放熱ベースそれぞれの表面にNiメタライズ層が形成されている、半導体パワーモジュール。 - 請求項4に記載の半導体パワーモジュールにおいて、
前記絶縁基板と前記放熱ベースとの間の前記接合部の平均厚さが50μm〜400μmである、半導体パワーモジュール。 - 半導体パワーモジュールを有する移動体であって、
前記半導体パワーモジュールは、半導体素子と絶縁基板との間、または、前記絶縁基板と放熱板との間に接合層を有しており、
前記接合層は、第1のCu−Sn化合物とSn−Cu−Sb層と第2のCu−Sn化合物とから構成されており、前記接合層の厚さを100とした場合に、前記第1のCu−Sn化合物と前記第2のCu−Sn化合物の厚さは1以上10以下で構成された、移動体。 - 請求項6に記載の移動体において、
前記半導体素子が有する面のうち前記絶縁基板側の面、または、前記絶縁基板、または、前記放熱板の表面にNiメタライズ層が形成された、移動体。 - 請求項6に記載の移動体において、
前記接合層の平均厚さが50μm以上400μm以下である、移動体。 - 請求項6乃至8のいずれか1項に記載の移動体において、
前記移動体は、自動車である移動体。 - 請求項6乃至8のいずれか1項に記載の移動体において、
前記移動体は、鉄道車両である移動体。 - 半導体パワーモジュールの製造方法であって、
半導体素子と絶縁基板とを、または、前記絶縁基板と放熱ベースとを、Cu1〜7重量%と、Sb3〜15重量%と、残部Snとからなる接合材によって接合する工程を有し、
前記接合材を280℃以上に加熱して前記半導体素子と前記絶縁基板とを、または、前記絶縁基板と前記放熱ベースとを接合する、半導体パワーモジュールの製造方法。
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PCT/JP2014/080978 WO2016079881A1 (ja) | 2014-11-21 | 2014-11-21 | 半導体パワーモジュールおよびその製造方法ならびに移動体 |
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