JP2010118634A - 流れ防止用ダムを備えたプリント基板及びその製造方法 - Google Patents
流れ防止用ダムを備えたプリント基板及びその製造方法 Download PDFInfo
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Abstract
【解決手段】ソルダーパッド104が形成されたベース基板102、前記ベース基板102のソルダーパッド104に形成されたソルダーバンプ116、及び前記ベース基板102の縁部にドライフィルムレジストで形成された流れ防止用ダム110cを含む。流れ防止用ダム110cがアンダーフィル液の外部流出を防止して、流れ防止用ダム110cを簡単な製造する簡単な方法を提供する。
【選択図】図3
Description
104 ソルダーパッド
106 ソルダーレジスト層
110 ドライフィルムレジスト
110a 未露光されたドライフィルムレジスト
110b 1次露光されたドライフィルムレジスト
110c 流れ防止用ダム
112 開口部
114 ソルダーペースト
116 ソルダーバンプ
118 半導体チップ
120 アンダーフィル液
Claims (14)
- ソルダーパッドが形成されたベース基板;
前記ベース基板のソルダーパッドに形成されたソルダーバンプ;及び
前記ベース基板の縁部にドライフィルムレジストで形成された流れ防止用ダム;
を含むことを特徴とする、流れ防止用ダムを備えたプリント基板。 - 前記ベース基板には、前記ソルダーパッドを露出させるオープン部を持つソルダーレジスト層が形成されていることを特徴とする、請求項1に記載の流れ防止用ダムを備えたプリント基板。
- 前記流れ防止用ダムは、ドライフィルムレジストが過露光によって過硬化した状態で前記ソルダーレジスト層に付着されていることを特徴とする、請求項1に記載の流れ防止用ダムを備えたプリント基板。
- 前記ソルダーパッドに形成された前記ソルダーバンプを介してフリップチップボンディングされる半導体チップをさらに含むことを特徴とする、請求項1に記載の流れ防止用ダムを備えたプリント基板。
- 前記流れ防止用ダムは、前記半導体チップと前記ベース基板の間のギャップに注入されるアンダーフィル液の外部流出を防止するために、前記半導体チップの外縁部に沿って前記ベース基板上に突出するように備えられていることを特徴とする、請求項4に記載の流れ防止用ダムを備えたプリント基板。
- 前記流れ防止用ダムは、前記ベース基板上にフリップチップボンディングされる半導体チップの上面の高さよりは低くて前記半導体チップと前記ベース基板の間のギャップよりは高い高さを持つことを特徴とする、請求項4に記載の流れ防止用ダムを備えたプリント基板。
- 前記流れ防止用ダムは、前記ベース基板の外縁部と前記半導体チップの外縁部の間に備えられることを特徴とする、請求項4に記載の流れ防止用ダムを備えたプリント基板。
- (A)ソルダーパッドが形成されたベース基板にドライフィルムレジストを塗布し、前記ドライフィルムレジストを1次露光させる段階;
(B)前記ベース基板の縁部に形成された1次露光された前記ドライフィルムレジストを2次露光させて流れ防止用ダムを形成する段階;
(C)前記ソルダーパッドが露出するように、露光されていない前記ドライフィルムレジストを除去して開口部を形成する段階;
(D)前記開口部にソルダーペーストを印刷し、リフロー工程によってソルダーバンプを形成する段階;及び
(E)1次露光された前記ドライフィルムレジストを除去する段階;
を含むことを特徴とする、流れ防止用ダムを備えたプリント基板の製造方法。 - 前記(E)段階の後、(F)前記ソルダーパッドに形成されたソルダーバンプを介して半導体チップをフリップチップボンディングする段階をさらに含むことを特徴とする、請求項8に記載の流れ防止用ダムを備えたプリント基板の製造方法。
- 前記(F)段階の後、(G)前記半導体チップと前記ベース基板の間のギャップにアンダーフィル液を注入する段階をさらに含むことを特徴とする、請求項9に記載の流れ防止用ダムを備えたプリント基板の製造方法。
- 前記流れ防止用ダムは、前記半導体チップと前記ベース基板の間のギャップに注入される前記アンダーフィル液の外部流出を防止するために、前記半導体チップの外縁部に沿って前記ベース基板上に突出するように形成されていることを特徴とする、請求項9に記載の流れ防止用ダムを備えたプリント基板の製造方法。
- 前記流れ防止用ダムは、前記ベース基板上にフリップチップボンディングされる前記半導体チップの上面の高さよりは低くて前記半導体チップと前記ベース基板の間のギャップよりは高い高さを持つことを特徴とする、請求項9に記載の流れ防止用ダムを備えたプリント基板の製造方法。
- 前記流れ防止用ダムは、前記ベース基板の外縁部と前記半導体チップの外縁部の間に備えられることを特徴とする、請求項9に記載の流れ防止用ダムを備えたプリント基板の製造方法。
- 前記ベース基板には、ソルダーパッドを露出させるオープン部を持つソルダーレジスト層が形成されていることを特徴とする、請求項8に記載の流れ防止用ダムを備えたプリント基板の製造方法。
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US20120000067A1 (en) | 2012-01-05 |
CN101740538A (zh) | 2010-06-16 |
US20100116534A1 (en) | 2010-05-13 |
KR101022942B1 (ko) | 2011-03-16 |
US8039761B2 (en) | 2011-10-18 |
JP4880006B2 (ja) | 2012-02-22 |
CN101740538B (zh) | 2012-05-16 |
KR20100053307A (ko) | 2010-05-20 |
US8336201B2 (en) | 2012-12-25 |
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