JP7288985B2 - 封止構造及びその成形方法 - Google Patents
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Description
図4に示すように、ウェハ基板200上にフォトレジスト300を塗布することと、
図5及び図6に示すように、露光現像プロセスによって一部のフォトレジスト300を除去することで予約フォトレジスト301を形成することとを含む。予約フォトレジスト301は、少なくとも複数の金属バンプ30の間に位置する。
図5に示すように、複数の開孔401を有するマスクプレート400をフォトレジスト300上に置くことと、
光線を複数の開孔401を通過させてフォトレジスト300に照射することで露光を実施することと、
図6に示すように、現像プロセスによって一部のフォトレジスト300を除去することにより、逆台形を呈する予約フォトレジスト301を形成することと、を含む。
Claims (2)
- 封止構造の成形方法であって、
間隔を空けて設けられる複数の金属バンプを含む再配線層をウェハ基板上に形成するステップと、
少なくとも前記金属バンプの周縁にシード層を形成するステップと、
ウェハ基板をカットして互いに独立する複数の封止構造を形成するステップと、を含み、
少なくとも前記金属バンプの周縁にシード層を形成するステップにおいて、隣接する前記金属バンプの前記シード層同士を互いに離間させ、
少なくとも前記金属バンプの周縁にシード層を形成するステップは、
フォトレジストを前記ウェハ基板上に塗布するステップと、
露光現像プロセスによって一部の前記フォトレジストを除去することにより、複数の前記金属バンプの間に少なくとも位置する予約フォトレジストを形成するステップと、
前記金属バンプの周縁を少なくとも覆うシード層をスパッタリングプロセスによって形成するステップと、
前記予約フォトレジストと前記予約フォトレジストに位置するシード層とを除去するステップと、を含み、
フォトレジストを前記ウェハ基板上に塗布するステップは、
複数の前記金属バンプを被覆する前記フォトレジストを前記ウェハ基板上に塗布するステップを含み、
露光現像プロセスによって一部の前記フォトレジストを除去することにより複数の前記金属バンプの間に少なくとも位置する予約フォトレジストを形成するステップは、
露光現像プロセスによって一部の前記フォトレジストを除去することにより、逆台形を呈する前記予約フォトレジストを形成することを含み、前記予約フォトレジストが第1予約フォトレジスト及び第2予約フォトレジストを含み、前記第1予約フォトレジストを複数の前記金属バンプの間に配置し、前記第2予約フォトレジストを前記金属バンプの前記ウェハ基板から遠く離れる側に配置することを特徴とする封止構造の成形方法。 - 前記金属バンプの周縁を少なくとも覆うシード層をスパッタリングプロセスによって形成するステップは、
前記金属バンプの周縁と前記第1予約フォトレジストで覆われていないウェハ基板領域と前記第2予約フォトレジストで覆われていない金属バンプ領域と前記予約フォトレジストのウェハ基板から遠く離れる側の表面とを覆うシード層をスパッタリングプロセスによって形成することを含むことを特徴とする請求項1に記載の成形方法。
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US11749668B2 (en) * | 2021-06-09 | 2023-09-05 | STATS ChipPAC Pte. Ltd | PSPI-based patterning method for RDL |
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JP4920330B2 (ja) * | 2006-07-18 | 2012-04-18 | ソニー株式会社 | 実装構造体の実装方法、発光ダイオードディスプレイの実装方法、発光ダイオードバックライトの実装方法および電子機器の実装方法 |
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CN111146170A (zh) * | 2019-12-30 | 2020-05-12 | 颀中科技(苏州)有限公司 | 封装结构及其成型方法 |
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2019
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2020
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- 2020-11-03 WO PCT/CN2020/126036 patent/WO2021135620A1/zh active Application Filing
- 2020-11-03 JP JP2021572869A patent/JP7288985B2/ja active Active
- 2020-11-03 US US17/615,823 patent/US20220328443A1/en not_active Abandoned
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US20220328443A1 (en) | 2022-10-13 |
CN111146170A (zh) | 2020-05-12 |
WO2021135620A1 (zh) | 2021-07-08 |
KR20220003605A (ko) | 2022-01-10 |
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