JP4618260B2 - 導体パターンの形成方法、半導体装置の製造方法、並びに半導体装置 - Google Patents
導体パターンの形成方法、半導体装置の製造方法、並びに半導体装置 Download PDFInfo
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- JP4618260B2 JP4618260B2 JP2007040270A JP2007040270A JP4618260B2 JP 4618260 B2 JP4618260 B2 JP 4618260B2 JP 2007040270 A JP2007040270 A JP 2007040270A JP 2007040270 A JP2007040270 A JP 2007040270A JP 4618260 B2 JP4618260 B2 JP 4618260B2
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- 229910000679 solder Inorganic materials 0.000 claims description 96
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 72
- 229910052802 copper Inorganic materials 0.000 claims description 72
- 239000010949 copper Substances 0.000 claims description 72
- 239000000758 substrate Substances 0.000 claims description 46
- 239000000843 powder Substances 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 13
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052737 gold Inorganic materials 0.000 claims description 10
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- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
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- 230000015572 biosynthetic process Effects 0.000 claims description 4
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
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Description
図4に示すフローにおいて、ステップS201〜S203、S205、S206は、第1の実施例と同様であるので、説明を省略する。
110:銅パターン
112:表面積が拡大した領域
120:ソルダーマスク
122:開口
130:プレス部材
140:半田粉末
142:半田めっき
144:半田隆起
200:ソルダーマスク
210、220:開口パターン
214:半田隆起
212、222、230:開口
Claims (13)
- 基板の一方の面上に銅または銅合金からなる複数の導体パターンを形成する工程と、
各導体パターンの一部を厚さ方向から押圧し、導体パターンの一部の幅を広くする工程と、
各導体パターン上に半田粉末を付着させる工程と、
導体パターン上に付着された半田粉末を溶融する工程と、
を有し、
前記幅を広くする工程は、プレス部材により複数の導体パターンを同時にプレスして当該導体パターンに幅広領域を形成する工程を含み、前記幅広領域が隣接する導体パターンに向けて広くなっている、導体パターンの形成方法。 - 基板の一方の面上に銅または銅合金からなる複数の導体パターンを形成する工程と、
各導体パターンの一部を厚さ方向から押圧し、導体パターンの一部の幅を広くする工程と、
各導体パターン上に半田粉末を付着させる工程と、
導体パターン上に付着された半田粉末を溶融する工程と、
を有し、
前記幅を広くする工程は、複数の導体パターンの配列方向と直交する方向に複数の導体パターンをプレスする工程を含み、当該プレスにより複数の導体パターンの前記直交する方向に幅広領域が整列して形成される、導体パターンの形成方法。 - 溶融された半田粉末は、複数の導体パターンの各々の幅の広い領域において隆起する、請求項1または2に記載の形成方法。
- 導体パターンの形成方法はさらに、基板上にマスクを形成する工程を含み、当該マスクに形成された開口により導体パターンの一部を露出させ、露出された導体パターン上に半田粉末を付着させる、請求項1に記載の形成方法。
- 導体パターンのピッチは、40ミクロン以下である、請求項1ないし4いずれか1つに記載の形成方法。
- 半田粉末は、錫および銀を含む、請求項1ないし5いずれか1つに記載の形成方法。
- 基板の他方の面には、前記複数の導体パターンと電気的に接続される複数の電極が形成される、請求項1ないし6いずれか1つに記載の形成方法。
- 請求項1ないし7いずれか1つに記載の形成方法により形成された導体パターンに、半導体チップの電極を接続する工程を含む、半導体装置の製造方法。
- 半導体チップの電極がスタッドバンプである、請求項8に記載の半導体装置の製造方法。
- 半導体チップの電極は、金スダッドバンプである、請求項8に記載の半導体装置の製造方法。
- 製造方法はさらに、半導体チップと基板の一方の面との間にアンダーフィル樹脂を挿入する工程を含む、請求項8ないし10いずれか1つに記載の半導体装置の製造方法。
- 請求項8ないし11いずれか1つに記載の半導体装置の製造方法によって製造された半導体装置。
- 基板の他方の面の電極にバンプ電極が形成されている、請求項12に記載の半導体装置。
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