JP4901933B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP4901933B2 JP4901933B2 JP2009225381A JP2009225381A JP4901933B2 JP 4901933 B2 JP4901933 B2 JP 4901933B2 JP 2009225381 A JP2009225381 A JP 2009225381A JP 2009225381 A JP2009225381 A JP 2009225381A JP 4901933 B2 JP4901933 B2 JP 4901933B2
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- solder
- solder bumps
- solder bump
- connection body
- bump
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- 239000004065 semiconductor Substances 0.000 title claims description 66
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 229910000679 solder Inorganic materials 0.000 claims description 256
- 239000000758 substrate Substances 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 43
- 238000002844 melting Methods 0.000 claims description 23
- 230000008018 melting Effects 0.000 claims description 23
- 230000001603 reducing effect Effects 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 description 37
- 230000008569 process Effects 0.000 description 31
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 21
- 229910045601 alloy Inorganic materials 0.000 description 16
- 239000000956 alloy Substances 0.000 description 16
- 230000004907 flux Effects 0.000 description 14
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 10
- 235000019253 formic acid Nutrition 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 150000001735 carboxylic acids Chemical class 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910020888 Sn-Cu Inorganic materials 0.000 description 3
- 229910019204 Sn—Cu Inorganic materials 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 229910020836 Sn-Ag Inorganic materials 0.000 description 2
- 229910020988 Sn—Ag Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910020816 Sn Pb Inorganic materials 0.000 description 1
- 229910020830 Sn-Bi Inorganic materials 0.000 description 1
- 229910020922 Sn-Pb Inorganic materials 0.000 description 1
- 229910018728 Sn—Bi Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910008783 Sn—Pb Inorganic materials 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
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Description
まず、電気めっき法で電極端子上にSn−0.7質量%Cu組成の半田バンプが形成された第1の半導体チップと、この第1の半導体チップが実装される被接続側の第2の半導体チップとを準備した。第2の半導体チップの電極端子上には、第1の半導体チップ1と同様にSn−0.7質量%Cu組成の半田バンプが形成されている。第1の半導体チップの電極端子と第2の半導体チップの電極端子とは互いに接続され得るように、対応した所定の位置に配置されている。端子数は約2000、半田バンプの高さは20μm、隣接する端子ピッチの最小値は60μmとした。フラックス剤は用いていない。
実施例1と同じ2個の半導体チップを用意し、これらを位置合せ機構、加熱機構、加圧機構、超音波発生機構を備えるフリップチップボンダによって、室温下で位置合せした後に対応する半田バンプ同士を接触させた。接触荷重は実施例1と同様とした。次いで、接触させた半田バンプに10Nの加圧力を加えつつ、50kHz、40Wの超音波振動を8秒間印加することによって、半田バンプの仮接続体を形成した。
Claims (5)
- 第1の基板に設けられた第1の半田バンプと第2の基板に設けられた第2の半田バンプとを位置合せして接触させる第1の工程と、
前記第1および第2の半田バンプの融点以上の温度に加熱し、前記第1の半田バンプと前記第2の半田バンプとを溶融させて仮接続した後に冷却する第2の工程と、
前記第1の半田バンプと前記第2の半田バンプとの仮接続体を還元性雰囲気中で前記第1および第2の半田バンプの融点以上の温度に加熱し、前記仮接続体の表面に存在する酸化膜を除去しつつ、前記仮接続体を溶融させて本接続する第3の工程と
を具備することを特徴とする半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
第1の工程で前記第1および第2の半田バンプの当初の高さの和Hに対して接触後の前記第1および第2の半田バンプの高さの和H1が90%以上100%以下の範囲となるように荷重を加えて第1の半田バンプと第2の半田バンプとを接触させることを特徴とする半導体装置の製造方法。 - 請求項2記載の半導体装置の製造方法において、
前記第2の工程で前記高さH1を維持しつつ前記第1および第2の半田バンプを溶融させた後、前記高さHに対して溶融状態の前記第1および第2の半田バンプの高さの和H2が20%以上80%以下の範囲となるように第1の基板と第2の基板との間隔を調整することを特徴とする半導体装置の製造方法。 - 第1の基板に設けられた第1の半田バンプと第2の基板に設けられた第2の半田バンプとを位置合せして接触させる第1の工程と、
前記第1および第2の半田バンプに超音波エネルギを印加し、前記第1の半田バンプと前記第2の半田バンプとを仮接続する第2の工程と、
前記第1の半田バンプと前記第2の半田バンプとの仮接続体を還元性雰囲気中で前記第1および第2の半田バンプの融点以上の温度に加熱し、前記仮接続体の表面に存在する酸化膜を除去しつつ、前記仮接続体を溶融させて本接続する第3の工程と
を具備することを特徴とする半導体装置の製造方法。 - 請求項4記載の半導体装置の製造方法において、
前記第2の工程で前記第1および第2の半田バンプが局部的に変形するように荷重を加えつつ、前記第1および第2の半田バンプに前記超音波エネルギを印加することを特徴とする半導体装置の製造方法。
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