JP7181336B2 - 半導体パッケージ方法及び半導体パッケージ構造 - Google Patents
半導体パッケージ方法及び半導体パッケージ構造 Download PDFInfo
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- JP7181336B2 JP7181336B2 JP2021069248A JP2021069248A JP7181336B2 JP 7181336 B2 JP7181336 B2 JP 7181336B2 JP 2021069248 A JP2021069248 A JP 2021069248A JP 2021069248 A JP2021069248 A JP 2021069248A JP 7181336 B2 JP7181336 B2 JP 7181336B2
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Description
図1Aから図1Fは、本発明の第1実施形態による半導体パッケージ方法を示すフローチャートである。図1Aに示されるように、キャリア110が提供され、ピックアンドプレースプロセス(pick and place)により、複数の半導体装置120をキャリア110に設置する。本実施例では、各半導体装置120はチップ121であり、チップ121はアクティブ面121a及び背面121bを有している。アクティブ面121aは複数のパッド121cを有し、キャリア110には粘性を有している接着層111が設置され、これらチップ121がアクティブ面121aによりキャリア110に接触すると、これらチップ121がキャリア110に堅固に粘着する。接着層111は一時的結合剤(Temporary bonding material、TBM)である。
図2Aから図2Cは本発明の第2実施形態による半導体パッケージ方法を示すフローチャートである。第1実施形態との差異は、本実施形態では研磨プロセスにより封止体130の溝部131を形成している点である。図2Aに示されるように、ピックアンドプレースプロセス(pick and place)によりキャリア110の接着層111にこれら半導体装置120を設置している。次いで、図2Bを参照すると、金型200のモールドキャビティ230中にキャリア110を設置し、且つキャリア110に封止体130を形成し、封止体130はこれら半導体装置120を被覆している。図2Cに示されるように、研磨ツールGにより封止体130に対する研磨を行うと共に、辺縁部分を避け、封止体130に溝部131の強化部131a及び凹部131bを形成している。強化部131aが凹部131bを囲むことにより、反りが生じないように凹部131bを支持し、且つ凹部131bの強度及び平坦性を高めている。本実施形態の後続のプロセスは第1実施形態と同じであるため再述はしない。
図3Aから図3Fは本発明の第3実施形態による半導体パッケージ方法を示すフローチャートである。第1実施形態との差異は、各半導体装置120はこれらチップ121の背面121bがキャリア110に接触し、アクティブ面121aがこれらバンプ121dを有し、各バンプ121dが各パッド121cに電気的に接続している点である。また、本実施形態は研磨プロセスにより封止体130の溝部131を形成している。
図4Aから図4Eは本発明の第4実施形態による半導体パッケージ方法を示すフローチャートである。第1実施形態との差異は、各半導体装置120がチップ121及び再配線層140である点である。図4Aに示されるように、キャリア110に再配線層140を設置し、且つ再配線層140の第一表面141がキャリア110に接触し、再配線層140はフォトレジスト層のパターン化及び金属電気めっきプロセスによりキャリア110の多層絶縁層及び金属層に形成されている。図4Bに示されるように、再配線層140の第二表面142にこれらチップ121を設置する。チップ121はアクティブ面121a及び背面121bを有し、アクティブ面121aはこれらパッド121c及びこれらバンプ121dを有する。これらバンプ121dはこれらパッド121c及び再配線層140に電気的に接続し、各パッド121cは各バンプ121dを介して再配線層140に電気的に接続している。
図5Aから図5Dは本発明の第5実施形態による半導体パッケージ方法を示すフローチャートである。第4実施形態との差異は、本実施形態は研磨プロセスにより封止体130の溝部131を形成している点である。図5Aに示されるように、同様に、フォトレジスト層のパターン化及び金属電気めっきプロセスによりキャリア110に再配線層140を形成している。続いて、図5Bに示されるように、再配線層140の第二表面142にチップ121を設置する。チップ121のこれらバンプ121dをこれらパッド121c及び再配線層140に電気的に接続し、各パッド121cは各バンプ121dを介して再配線層140に電気的に接続している。続いて、図5Cに示されるように、金型200のモールドキャビティ230中にキャリア110を設置し、キャリア110に封止体130を形成し、封止体130はこれら半導体装置120を被覆している。図5Dに示されるように、封止体130を取り出し、研磨ツールGにより封止体130に対する研磨を行うと共に、辺縁部分を避け、封止体130に溝部131の強化部131a及び凹部131bを形成している。強化部131aが凹部131bを囲むことで反りが生じないように凹部131bを支持し、凹部131bの強度及び平坦性を高めている。本実施形態の後続のプロセスは第4実施形態と同じであるため再述はしない。
111 接着層
120 半導体装置
121 チップ
121a アクティブ面
121b 背面
121c パッド
121d バンプ
130 封止体
131 溝部
131a 強化部
131b 凹部
131c 凹溝の底面
131d 上面
131e 強化リブ
132 下面
140 再配線層
141 第一表面
142 第二表面
150 接続素子
160 ダイシングテープ
200 金型
210 上型
220 下型
230 モールドキャビティ
D1 第一ピッチ
D2 第二ピッチ
G 研磨ツール
P 半導体パッケージ構造
Claims (14)
- キャリアに複数の半導体装置を設置する工程と、
前記半導体装置を被覆し、溝部を有する封止体であって、前記溝部は強化部及び凹部を有し、前記強化部は前記凹部から突出し、且つ前記凹部を囲む封止体を前記キャリアに形成する工程と、
前記封止体の前記溝部の前記強化部を除去する工程と、
を含み、
前記溝部の凹溝の底面には複数の強化リブが凸設されていることを特徴とする半導体パッケージ方法。 - 前記半導体装置は前記溝部の前記凹部に被覆されていることを特徴とする請求項1に記載の半導体パッケージ方法。
- 前記強化部は前記半導体装置を被覆していないことを特徴とする請求項2に記載の半導体パッケージ方法。
- 前記封止体は下面を有し、前記凹部は前記凹溝の底面を有し、前記凹部の前記凹溝の底面と前記封止体の下面との間には500μm未満の第一ピッチが設けられ、前記強化部は上面を有し、前記強化部の上面と前記封止体の下面との間には600μm超の第二ピッチが設けられていることを特徴とする請求項1に記載の半導体パッケージ方法。
- 前記キャリアを除去し、前記封止体をダイシングテープに貼付し、前記封止体のダイシングを行って複数の半導体パッケージ素子を形成する工程を含むことを特徴とする請求項1に記載の半導体パッケージ方法。
- 各前記半導体装置はアクティブ面及び背面を有するチップを含み、前記アクティブ面は前記キャリアに接触し、複数のパッドを有し、前記背面は前記封止体により被覆され、
前記キャリアに前記封止体を形成した後、前記キャリアを除去すると共に、再配線層を前記アクティブ面に設置し、且つ前記再配線層は前記パッドに電気的に接続し、次いで前記再配線層に複数の接続素子を設置し、各前記接続素子は前記再配線層を介して各前記パッドに電気的に接続していることを特徴とする請求項1に記載の半導体パッケージ方法。 - 前記キャリアに前記封止体を形成する工程は、
モールドキャビティを有している金型を提供する工程と、
複数の前記半導体装置が設置されている前記キャリアを前記金型の前記モールドキャビティ中に設置する工程と、
凹字形を呈する前記モールドキャビティ中に封止剤を注入する工程と、
前記封止剤を硬化させて、前記溝部を有している前記封止体を形成する工程と、
を含むことを特徴とする請求項1または6に記載の半導体パッケージ方法。 - 各前記半導体装置はアクティブ面及び背面を有するチップを含み、前記背面は前記キャリアに接触し、前記アクティブ面は複数のバンプを有し、各前記バンプは複数のパッドに電気的に接続し、
前記キャリアに前記封止体を形成した後、前記封止体を研磨し、前記バンプを前記凹溝の底面に露出させ、次いで前記凹溝の底面に再配線層を設置し、且つ前記再配線層を前記バンプに電気的に接続し、複数の接続素子を前記再配線層に設置し、各前記接続素子は前記再配線層を介して各前記バンプに電気的に接続していることを特徴とする請求項1に記載の半導体パッケージ方法。 - 各前記半導体装置はチップ及び再配線層を有し、前記再配線層の第一表面は前記キャリアに接触し、前記チップは前記再配線層の第二表面に設置され、前記チップはアクティブ面及び背面を有し、前記アクティブ面は、複数のパッド、及び、前記パッドと前記再配線層とに電気的に接続する複数のバンプを有し、各前記パッドは各前記バンプを介して前記再配線層に電気的に接続し、
前記キャリアに前記封止体を形成した後、前記キャリアを除去すると共に、前記再配線層の前記第一表面に、前記再配線層を介して各前記バンプに電気的に接続している複数の接続素子を設置することを特徴とする請求項1に記載の半導体パッケージ方法。 - 前記キャリアに前記封止体を形成する工程は、
モールドキャビティを有している金型を提供する工程と、
前記半導体装置が設置されている前記キャリアを前記金型の前記モールドキャビティ中に設置する工程と、
前記モールドキャビティ中に封止剤を注入する工程と、
前記封止剤を硬化させて前記封止体を形成する工程と、
研磨プロセスにより前記封止体に前記溝部を形成する工程と、
を含むことを特徴とする請求項1または9に記載の半導体パッケージ方法。 - キャリアと、
前記キャリアに設置されている複数の半導体装置と、
前記キャリアに設置され、且つ前記半導体装置を被覆し、溝部を有する封止体と、
を備え、
前記封止体の前記溝部は強化部及び凹部を有し、前記強化部は前記凹部から突出し、且つ前記凹部を囲み、
前記溝部の凹溝の底面には複数の強化リブが凸設されていることを特徴とする半導体パッケージ構造。 - 前記半導体装置は前記溝部の前記凹部に被覆されていることを特徴とする請求項11に記載の半導体パッケージ構造。
- 前記強化部に前記半導体装置が被覆されていないことを特徴とする請求項12に記載の半導体パッケージ構造。
- 前記封止体は下面を有し、前記凹部は前記凹溝の底面を有し、前記凹部の前記凹溝の底面と前記封止体の下面との間には500μm未満の第一ピッチが設けられ、前記強化部は上面を有し、前記強化部の上面と前記封止体の下面との間には600μm超の第二ピッチが設けられていることを特徴とする請求項11に記載の半導体パッケージ構造。
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