JP6966815B2 - ピン状ワイヤ成形方法及びワイヤボンディング装置 - Google Patents
ピン状ワイヤ成形方法及びワイヤボンディング装置 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 58
- 239000004065 semiconductor Substances 0.000 claims description 58
- 238000005452 bending Methods 0.000 claims description 48
- 239000000758 substrate Substances 0.000 claims description 22
- 238000005520 cutting process Methods 0.000 claims description 15
- 238000002788 crimping Methods 0.000 claims description 13
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 3
- 239000010949 copper Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 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
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Description
Claims (8)
- ワイヤが挿通されたボンディングツールを用いて基板又は半導体素子のボンディング位置にピン状のワイヤを成形するピン状ワイヤ成形方法であって、
先端から所定の長さのワイヤを延出させた前記ボンディングツールを基準面に向かって斜めに下降させて、ワイヤの下端を前記基準面に接触させてワイヤを前記基準面に沿った方向に折り曲げて折り曲げワイヤを成形する折り曲げワイヤ成形工程と、
前記ボンディングツールの先端と前記基準面との間に前記折り曲げワイヤを挟みこんだ状態で、前記折り曲げワイヤの延びる方向と反対方向に向かって前記ボンディングツールを横移動させて前記折り曲げワイヤを上方向に起立させて起立ワイヤを成形する起立ワイヤ成形工程と、
前記ボンディングツールを前記基板又は半導体素子の前記ボンディング位置の上に移動させて前記起立ワイヤを前記ボンディング位置にボンディングするボンディング工程と、
前記ボンディングツールを上昇させて前記ボンディングツールに挿通されたワイヤを切断することによって前記起立ワイヤを前記ボンディング位置から立ち上がるピン状ワイヤとするワイヤ切断工程と、
を有するピン状ワイヤ成形方法。 - 請求項1に記載のピン状ワイヤ成形方法であって、
前記折り曲げワイヤ成形工程は、前記ボンディングツールを下降させるにつれて前記ボンディングツールの移動方向と前記基準面とのなす角度が小さくなるように、前記ボンディングツールを前記基準面に向かって斜めに下降させること、
を特徴とするピン状ワイヤ成形方法。 - 請求項1又は2に記載のピン状ワイヤ成形方法であって、
前記ボンディング工程は、前記ボンディングツールの中心位置を前記ボンディング位置の中心位置からずらしてボンディングすること、
を特徴とするピン状ワイヤ成形方法。 - 請求項1又は2に記載のピン状ワイヤ成形方法であって、
前記折り曲げワイヤ成形工程の前に、
前記ボンディングツールを前記ボンディング位置に向かって下降させて先端をフリーエアボールに成形したワイヤを前記ボンディング位置にボンディングして圧着ボールを成形する圧着ボール成形工程と、
前記ボンディングツールの先端からワイヤを繰り出しながら前記ボンディングツールを上昇させた後、繰り出したワイヤを前記圧着ボールの上に折り返し、押圧してバンプを成形するバンプ成形工程と、を含み、
前記ボンディング工程は、前記起立ワイヤを前記バンプの上にボンディングすること、
を特徴とするピン状ワイヤ成形方法。 - 請求項4に記載のピン状ワイヤ成形方法であって、
前記バンプ成形工程は、繰り出したワイヤを前記圧着ボールの上に折り返し、前記ボンディングツールの中心位置を前記ボンディング位置からずらしてワイヤを押圧して上面に凹み部を有する前記バンプを成形し、
前記ボンディング工程は、前記起立ワイヤの根元が前記バンプの前記凹み部に合うように前記ボンディングツールの中心位置を前記ボンディング位置からずらしてボンディングすること、
を特徴とするピン状ワイヤ成形方法。 - 請求項1又は2に記載のピン状ワイヤ成形方法であって、
前記基準面は、前記基板の表面又は前記半導体素子の表面であること、
を特徴とするピン状ワイヤ成形方法。 - 請求項5に記載のピン状ワイヤ成形方法であって、
前記折り曲げワイヤ成形工程は、先端から所定の長さのワイヤを延出させた前記ボンディングツールを前記基板の表面又は前記半導体素子の表面に向かって斜めに下降させて、ワイヤの下端を前記バンプに接触させてワイヤを前記基板の表面又は前記半導体素子の表面に沿った方向に折り曲げて前記折り曲げワイヤを成形すること、
を特徴とするピン状ワイヤ成形方法。 - ワイヤが挿通されたボンディングツールを用いて基板又は半導体素子のボンディング位置にピン状のワイヤを成形するワイヤボンディング装置であって、
前記ボンディングツールの位置を調整する制御部を備え、
前記制御部が、
先端から所定の長さのワイヤを延出させた前記ボンディングツールを基準面に向かって斜めに下降させて、ワイヤの下端を前記基準面に接触させてワイヤを前記基準面に沿った方向に折り曲げて折り曲げワイヤを成形する折り曲げワイヤ成形工程と、
前記ボンディングツールの先端と前記基準面との間に前記折り曲げワイヤを挟みこんだ状態で、前記折り曲げワイヤの延びる方向と反対方向に向かって前記ボンディングツールを横移動させて前記折り曲げワイヤを上方向に起立させて起立ワイヤを成形する起立ワイヤ成形工程と、
前記ボンディングツールを前記基板又は半導体素子の前記ボンディング位置の上に移動させて前記起立ワイヤを前記ボンディング位置にボンディングするボンディング工程と、
前記ボンディングツールを上昇させて前記ボンディングツールに挿通されたワイヤを切断することによって前記起立ワイヤを前記ボンディング位置から立ち上がるピン状ワイヤとするワイヤ切断工程と、
を実行することを特徴とするワイヤボンディング装置。
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