JP2008235898A - パワー半導体モジュール、パワー半導体モジュールの製造方法、および、半導体チップ - Google Patents
パワー半導体モジュール、パワー半導体モジュールの製造方法、および、半導体チップ Download PDFInfo
- Publication number
- JP2008235898A JP2008235898A JP2008071259A JP2008071259A JP2008235898A JP 2008235898 A JP2008235898 A JP 2008235898A JP 2008071259 A JP2008071259 A JP 2008071259A JP 2008071259 A JP2008071259 A JP 2008071259A JP 2008235898 A JP2008235898 A JP 2008235898A
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- Prior art keywords
- copper
- solder
- semiconductor module
- power semiconductor
- base material
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 161
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 229910000679 solder Inorganic materials 0.000 claims abstract description 150
- 239000010949 copper Substances 0.000 claims abstract description 114
- 238000005476 soldering Methods 0.000 claims abstract description 93
- 229910052802 copper Inorganic materials 0.000 claims abstract description 84
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 81
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 41
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims description 100
- 229910052751 metal Inorganic materials 0.000 claims description 51
- 239000002184 metal Substances 0.000 claims description 51
- 239000000758 substrate Substances 0.000 claims description 47
- 238000001465 metallisation Methods 0.000 claims description 43
- 229910052718 tin Inorganic materials 0.000 claims description 41
- 230000008018 melting Effects 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 35
- 238000009792 diffusion process Methods 0.000 claims description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 26
- 230000003746 surface roughness Effects 0.000 claims description 26
- 229910000765 intermetallic Inorganic materials 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 18
- 239000004332 silver Substances 0.000 claims description 18
- 239000010936 titanium Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910052787 antimony Inorganic materials 0.000 claims description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 6
- 229910052732 germanium Inorganic materials 0.000 claims description 6
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 6
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 6
- HBVFXTAPOLSOPB-UHFFFAOYSA-N nickel vanadium Chemical compound [V].[Ni] HBVFXTAPOLSOPB-UHFFFAOYSA-N 0.000 claims description 6
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 6
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 3
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 134
- 238000010586 diagram Methods 0.000 description 8
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000002123 temporal effect Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229940125898 compound 5 Drugs 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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Abstract
【解決手段】銅含有第1のはんだ付け母材、接続層214、14、114、および、銅含有第2のはんだ付け母材は、連続的に配置されて、固定して互いに接続されている。上記接続層は、少なくとも90重量%の金属間化合物銅錫相の一部を有する。2つの上記はんだ付け母材と、これら2つのはんだ付け母材の間に配置されたはんだとを、所定の圧力で互いに加圧しあい該はんだを溶融させる。所定の時間が終了した後、この液状のはんだから拡散された銅および錫が、金属間化合物銅錫相を含む接続層を形成する。該接続層の一部は、上記はんだ層から生成された接続層の少なくとも90重量%である。
【選択図】図1
Description
本発明は、パワー半導体モジュール、パワー半導体モジュールの製造方法、および、半導体チップに関する。
パワー半導体モジュールとは、多数のはんだ付けされた接続部を含むものであり、この極めて多様な部材は、固定されて、永続的に互いに接合されている必要がある。該パワー半導体モジュールの動作中に生じる高温度のため、および、高温度の変動を伴う頻繁な温度変化のため、このはんだ付けされた接合部は過酷に用いられ、これによって、パワー半導体モジュールの耐用年数は制限される。特に、少なくとも一方のはんだ付け母材(例えば、セラミック基板のメタライゼーション)が高い表面粗度を有しているならば、各はんだ付け接合部は、温度サイクルに対して敏感である。高い表面粗度によって生じる問題を回避するために、多くの場合、はんだ付け母材の表面は、研磨されている必要がある。
一実施形態によれば、新規の半導体電力モジュールでは、第1の銅含有はんだ付け母材、接続層、および、第2の銅含有はんだ付け母材が連続的に配置されて、互いに固定して接続されている。該第1のはんだ付け母材は、該接続層に直接接する第1の表面を有し、該第2のはんだ付け母材は、該接続層に直接隣接して終結する第2の表面を有し、該接続層は、少なくとも90体積%で金属間化合物銅錫相の一部を含んでいる。
本発明は、以下の図面および明細書を参照することによって、より良く理解することが可能である。図面の部材は、必ずしも縮尺される必要はなく、図面の部材は、むしろ、本発明の原理を説明するために強調したものである。さらに、本図面では、同様の参照番号は、対応する部分を指す。
図1は、複数のはんだ付け接合部を有するパワー半導体モジュール1を示す縦断面図であり、各銅含有はんだ付け母材対20b/12b、12a/19、119/9は、その間に位置している接続層214、14、または114によって、それぞれ接合されている。各接続層214、14、または114は、少なくとも90体積%で金属間化合物銅錫相の一部を含む。
Claims (66)
- 第1の銅含有はんだ付け母材、接続層、および、第2の銅含有はんだ付け母材が連続的に配置されると共に、固定して互いに接続されている半導体電力モジュールであって、
上記第1のはんだ付け母材は、上記接続層に直接接する第1表面を有し、
上記第2のはんだ付け母材は、上記接続層に直接接する第2の表面を有し、
上記接続層は、少なくとも90体積%で金属間化合物銅錫相の一部を有する、半導体電力モジュール。 - 上記第1の表面、および/または、上記第2の表面は、10μm以下の表面粗度Rzを有する、請求項1に記載のパワー半導体モジュール。
- 上記第1の表面、および/または、上記第2の表面は、4μmよりも低い表面粗度Rzを有する、請求項1に記載のパワー半導体モジュール。
- 上記第1の表面、および/または、上記第2の表面は、4μm〜6μmの表面粗度Rzを有する、請求項1に記載のパワー半導体モジュール。
- 上記第1の表面、および/または、上記第2の表面は、6μm〜8μmの表面粗度Rzを有する、請求項1に記載のパワー半導体モジュール。
- 上記第1の表面、および/または、上記第2の表面は、8μm〜10μmの表面粗度Rzを有する、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、金属間化合物銅錫相Cu6Sn5、Cu3Sn、Cu10Sn3、Cu41Sn11のうちの少なくとも1つを含む、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、金属間化合物銅錫相Cu6Sn5およびCu3Snのみを含む金属間化合物銅錫相を含む、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、金属間化合物銅錫相Cu3Snのみを含む金属間化合物銅錫相を含む、請求項1に記載のパワー半導体モジュール。
- 上記接続層の少なくとも90体積%は、少なくとも415℃の融点を有している、請求項1に記載のパワー半導体モジュール。
- 上記接続層の少なくとも90体積%は、少なくとも676℃の融点を有している、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、3.5重量%で銀(Ag)の一部を有する錫ベースのはんだを含む、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、0.1重量%〜6重量%で銀(Ag)の一部を有する錫ベースのはんだを含む、請求項8に記載のパワー半導体モジュール。
- 上記接続層は、銀(Ag)、銅(Cu)、ニッケル(Ni)、インジウム(In)、ビスマス(Bi)、亜鉛(Zn)、アンチモン(Sb)、ゲルマニウム(Ge)、または、鉛(Pb)のうちのいずれか1つの物質と合金された錫ベースのはんだを含む、請求項1に記載のパワー半導体モジュール。
- 上記接続層は、銀(Ag)、銅(Cu)、ニッケル(Ni)、インジウム(In)、ビスマス(Bi)、亜鉛(Zn)、アンチモン(Sb)、ゲルマニウム(Ge)、または、鉛(Pb)のうちの少なくとも2つの物質と合金された錫ベースのはんだを含む、請求項10に記載のパワー半導体モジュール。
- 上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材は、少なくとも70重量%で銅の一部を含むか、または、完全に銅から成る、請求項1に記載のパワー半導体モジュール。
- 上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材は、半導体チップのメタライゼーションとして、銅のディスクとして、銅のリボンとして、コンタクトワイヤとして、コンタクトワイヤの被膜として、クリップとして、クリップの被膜として、半導体チップの回路キャリアまたは半導体チップの回路キャリアの被膜として、若しくは、ベースプレートまたはベースプレートの被膜として実施される、請求項1に記載のパワー半導体モジュール。
- 上記第1のはんだ付け母材は、パワー半導体モジュールのベースプレートとして、または、パワー半導体モジュールのベースプレートの被膜として実施され、上記第2のはんだ付け母材は、基板として、または、基板の被膜として実施される、請求項1に記載のパワー半導体モジュール。
- 上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材は、実質的に金属から成り、1μm〜5μmの厚さを有する、請求項1に記載のパワー半導体モジュール。
- 半導体基板を備える半導体チップであって、上記半導体基板は、第1の表面から始まって、バッファ層、拡散障壁層、および、銅含有金属層が連続的に配置されている第1の表面を有する、半導体チップ。
- 上記銅含有金属層には、錫含有はんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層であるはんだ層には、10μm以下の厚さを有する錫含有はんだ層が、直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、5μm〜15μmの厚さを有する錫含有はんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、4μm〜13μmの厚さを有する錫含有はんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、3μm〜11μmの厚さを有する錫含有はんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、2μm〜9μmの厚さを有する錫含有はんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、純粋な錫から成るはんだ層が直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、錫ベースのはんだを含有する錫含有はんだ層が直接接しており、上記錫含有はんだ層は、3.5重量%で銀(Ag)の一部を有している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、錫ベースのはんだを有する錫含有はんだ層が、直接接しており、上記錫含有はんだ層は、0.1重量%〜6重量%で銀(Ag)の一部を有している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、銀(Ag)、銅(Cu)、ニッケル(Ni)、インジウム(In)、ビスマス(Bi)、亜鉛(Zn)、アンチモン(Sb)、ゲルマニウム(Ge)、または、鉛(Pb)のうちのいずれか1つの物質と合金された錫含有はんだ層が、直接接している、請求項20に記載の半導体チップ。
- 上記銅含有金属層には、銀(Ag)、銅(Cu)、ニッケル(Ni)、インジウム(In)、ビスマス(Bi)、亜鉛(Zn)、アンチモン(Sb)、ゲルマニウム(Ge)、または、鉛(Pb)のうちの少なくとも2つの物質と合金された錫含有はんだ層が、直接接している、請求項20に記載の半導体チップ。
- 上記金属層は銅(Cu)から成る、請求項20に記載の半導体チップ。
- 上記金属層は、銅(Cu)から成ると共に、1μm〜30μmの厚さを有する、請求項20に記載の半導体チップ。
- 上記バッファ層は、アルミニウム(Al)を含むか、または、アルミニウム(Al)から成る、請求項20に記載の半導体チップ。
- 上記バッファ層は、アルミニウム(Al)を含むか、または、アルミニウム(Al)から成ると共に、200nm〜700nmの厚さを有する、請求項20に記載の半導体チップ。
- 上記バッファ層は、アルミニウム(Al)を含むか、または、アルミニウム(Al)から成ると共に、400nmの厚さを有する、請求項20に記載の半導体チップ。
- 上記拡散障壁層は、チタニウム(Ti)、窒化チタン(TiN)、チタニウムタングステン(TiW)、タンタル(Ta)、窒化タンタル(TaN)のうちの少なくとも1つの物質を含むか、または、これら物質のうちの少なくとも1つの物質から成ると共に、50nm〜600nmの厚さを有する、請求項20に記載の半導体チップ。
- 上記拡散障壁層は、チタニウム(Ti)を含むか、または、チタニウム(Ti)から成ると共に、300nm〜500nmの厚さを有する、請求項20に記載の半導体チップ。
- 上記拡散障壁層は、チタニウム(Ti)を含むか、または、チタニウム(Ti)から成ると共に、400nmの厚さを有する、請求項20に記載の半導体チップ。
- 上記拡散障壁層と上記金属層との間には、シード層が配置されている、請求項20に記載の半導体チップ。
- 上記シード層は、50nm〜200nmの厚さを含むと共に、銀(Ag)、金(Au)、ニッケル(Ni)、ニッケルバナジウム(NiV)、銅(Cu)のうちの少なくとも1つの物質を含むか、または、これら物質のうちの少なくとも1つの物質から成る、請求項40に記載の半導体チップ。
- 上記シード層は、銅(Cu)を含むか、または、銅(Cu)から成ると共に、100nm〜200nmの厚さを有する、請求項40に記載の半導体チップ。
- 上記シード層は、銀(Ag)を含むか、または、銀(Ag)から成ると共に、50nm〜100nmの厚さを有する、請求項40に記載の半導体チップ。
- 第1の銅(Cu)含有はんだ付け母材、接続層、および、第2の銅(Cu)含有はんだ付け母材が、連続的に配置されているパワー半導体モジュールの製造方法であって、
上記方法は、
第1の銅(Cu)含有はんだ付け母材、接続層、および、第2の銅(Cu)含有はんだ付け母材を用意する工程と、
上記第1のはんだ付け母材と上記第2のはんだ付け母材との間に、はんだを配置する工程と、
上記はんだを、元の融点よりも高いと同時に415℃以下である温度まで加熱することによって、上記はんだを溶融する工程と、
上記第1のはんだ付け母材、および、上記第2のはんだ付け母材、並びに、これら2つのはんだ付け母材間に配置されたはんだを、0.5N/mm2〜5N/mm2の所定の圧力によって互いに加圧しあう工程と、
この加圧工程中の該はんだの温度を、少なくとも0.1秒〜10秒の時間、該はんだの融点よりも高いと同時に400℃以下の温度に保持する工程とを有する、パワー半導体モジュール製造方法。 - 上記少なくとも0.1秒〜10秒の時間の後には、上記はんだ付け母材および上記はんだを、上記はんだの元の融点よりも高いと同時に415℃以下である温度において、0秒より長く120秒までの間焼き戻す工程が続く、請求項44に記載のパワー半導体モジュール製造方法。
- 上記所定の圧力は、0N/mm2よりも大きいと同時に5N/mm2以下である、請求項44に記載のパワー半導体モジュール製造方法。
- 上記所定の圧力は、0.5N/mm2以上3N/mm2以下である、請求項46に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材と上記第2のはんだ付け母材とを互いに加圧しあう工程の前に、上記はんだを、上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材に当てる、請求項44に記載のパワー半導体モジュール製造方法。
- 上記はんだを、蒸着法、スパッタリング法、または、ガルバニック堆積によって当てる、請求項48に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材は、半導体チップのメタライゼーションであり、上記第2のはんだ付け母材は、基板のメタライゼーションである、請求項44に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材は、半導体チップのメタライゼーションであり、上記第2のはんだ付け母材は、コンタクトワイヤ、または、コンタクトワイヤの被膜である、請求項44に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材は、半導体チップのメタライゼーションであり、上記第2のはんだ付け母材は、クリップ、または、クリップの被膜である、請求項44に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材は、上記半導体モジュールのベースプレート、または、上記半導体モジュールのベースプレートの被膜であり、上記第2のはんだ付け母材は、基板、または、基板の被膜である、請求項44に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材は、それぞれの他方のはんだ付け母材に向かい合っている第1の表面を有し、上記第1の表面は、10μm以下の表面粗度Rzを有する、請求項44に記載のパワー半導体モジュール製造方法。
- 上記パワー半導体モジュールは、メタライゼーション積層および上記第1のはんだ付け母材が連続的に配置されている半導体基板を含む、請求項44に記載のパワー半導体モジュール製造方法。
- 上記メタライゼーション積層は、バッファ層および拡散障壁層を含む、請求項55に記載のパワー半導体モジュール製造方法。
- 上記バッファ層は、アルミニウムを含むか、または、アルミニウムから成る、請求項56に記載のパワー半導体モジュール製造方法。
- 上記バッファ層は、200nm〜700nmの厚さを有する、請求項56に記載のパワー半導体モジュール製造方法。
- 上記拡散障壁層は、チタニウム(Ti)、窒化チタン(TiN)、チタニウムタングステン(TiW)、タンタル(Ta)、窒化タンタル(TaN)のうちの少なくとも1つの物質を含むか、または、これら物質のうちの少なくとも1つの物質から成る、請求項56に記載のパワー半導体モジュール製造方法。
- 上記拡散障壁層は、50nm〜600nmの厚さを有する、請求項56に記載のパワー半導体モジュール製造方法。
- 上記第1のはんだ付け母材、および/または、上記第2のはんだ付け母材は、1μmを超える厚さを有する、請求項44に記載のパワー半導体モジュール製造方法。
- 上記はんだは、錫(Sn)または純粋な錫(Sn)から成る、請求項44に記載のパワー半導体モジュール製造方法。
- 上記はんだは、錫(Sn)を含むと共に、銀(Ag)、銅(Cu)、ニッケル(Ni)、インジウム(In)、ビスマス(Bi)、亜鉛(Zn)、アンチモン(Sb)、鉛(Pb)、ゲルマニウム(Ge)のうちの少なくとも1つの材料を含む、請求項44に記載のパワー半導体モジュール製造方法。
- 上記溶融工程の前には、上記はんだは15μm以下の厚さを有している、請求項44に記載のパワー半導体モジュール製造方法。
- 上記障壁層と上記第1のはんだ付け母材との間にシード層を配置する、請求項55に記載のパワー半導体モジュール製造方法。
- 上記シード層は、50nm〜200nmの厚さを有し、銀(Ag)、金(Au)、ニッケル(Ni)、ニッケルバナジウム(NiV)、銅(Cu)のうちの少なくとも1つの材料を含むか、これら材料のうちの少なくとも1つの材料から成る、請求項64に記載のパワー半導体モジュール製造方法。
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Also Published As
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US20080230905A1 (en) | 2008-09-25 |
JP2012074726A (ja) | 2012-04-12 |
US9214442B2 (en) | 2015-12-15 |
JP5487190B2 (ja) | 2014-05-07 |
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