JP5250524B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP5250524B2 JP5250524B2 JP2009237128A JP2009237128A JP5250524B2 JP 5250524 B2 JP5250524 B2 JP 5250524B2 JP 2009237128 A JP2009237128 A JP 2009237128A JP 2009237128 A JP2009237128 A JP 2009237128A JP 5250524 B2 JP5250524 B2 JP 5250524B2
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- underfill resin
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- thermal expansion
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Description
複数のバンプを介して前記基板の一方の面に接続され、該一方の面に素子形成面が対向している半導体チップと、
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間に充填されたアンダーフィル樹脂と、
を有し、
前記アンダーフィル樹脂は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に形成された第1のアンダーフィル樹脂と、
前記第1のアンダーフィル樹脂の外側に形成された第2のアンダーフィル樹脂と、
を含み、
前記基板の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きく、
前記第2のアンダーフィル樹脂の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きいことを特徴とする半導体装置を提供する。
また、第1のアンダーフィル樹脂は複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に形成されているので、バンプを含むチップと基板との接合部は、同一のアンダーフィル樹脂すなわち第1のアンダーフィル樹脂により覆われることとなる。このことにより、熱膨張係数に差がある2種類のアンダーフィル樹脂が同一のバンプ接合部に両側から接している場合とは異なり、アンダーフィル樹脂の熱膨張係数差に起因して接合部に加わる応力を抑制できる。
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間にアンダーフィル樹脂を充填する第2工程と、
を有し、
前記第2工程は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に、前記基板よりも熱膨張係数が小さい第1のアンダーフィル樹脂を形成する第3工程と、
前記第1のアンダーフィル樹脂の外側に、前記第1のアンダーフィル樹脂よりも熱膨張係数が大きい第2のアンダーフィル樹脂を形成する第4工程と、
を含むことを特徴とする半導体装置の製造方法を提供する。
図1は第1の実施形態に係る半導体装置10の構成を示す模式図であり、このうち図1(a)は正面断面図、図1(b)は平面図である。図2は第1の実施形態に係る半導体装置の製造方法を説明するための一連の工程図(断面図)である。
本実施形態に係る半導体装置の製造方法は、半導体チップ2の素子形成面が、基板1の一方の面に対向するように、複数のバンプ3を介して基板1に半導体チップ2を接続する第1工程と、半導体チップ2の素子形成面と基板1の一方の面との間にアンダーフィル樹脂6を充填する第2工程と、を有する。第2工程は、複数のバンプ3のうち最外周に配置されている複数のバンプ3aの配置領域及びその内側に、基板1よりも熱膨張係数が小さい第1のアンダーフィル樹脂4を形成する第3工程と、第1のアンダーフィル樹脂4の外側に、第1のアンダーフィル樹脂4よりも熱膨張係数が大きい第2のアンダーフィル樹脂5を形成する第4工程と、を含む。
以下、詳細に説明する。
図3は第2の実施形態に係る半導体装置20を示す模式図であり、このうち(a)は正面断面図、(b)は平面図である。図4は第2の実施形態に係る半導体装置の製造方法を説明するための一連の工程図(断面図)である。
図5は第3の実施形態に係る半導体装置30を示す模式図であり、このうち(a)は正面断面図、(b)は平面図である。
図6は第4の実施形態に係る半導体装置40を示す模式図であり、このうち(a)は正面断面図、(b)は平面図である。なお、図6(b)では、各構成要素の位置関係が分かりやすくなるように、封止樹脂41の図示を省略している。
図7は第5の実施形態に係る半導体装置50を示す模式図であり、このうち(a)は正面断面図、(b)は平面図である。なお、図7(b)では、各構成要素の位置関係が分かりやすくなるように、封止樹脂53の図示を省略している。
図8は第6の実施形態に係る半導体装置60を示す模式図であり、このうち(a)は正面断面図、(b)は平面図である。なお、図8(b)では、各構成要素の位置関係が分かりやすくなるように、封止樹脂53の図示を省略している。
以下、参考形態の例を付記する。
(1)
基板と、
複数のバンプを介して前記基板の一方の面に接続され、該一方の面に素子形成面が対向している半導体チップと、
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間に充填されたアンダーフィル樹脂と、
を有し、
前記アンダーフィル樹脂は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に形成された第1のアンダーフィル樹脂と、
前記第1のアンダーフィル樹脂の外側に形成された第2のアンダーフィル樹脂と、
を含み、
前記基板の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きく、
前記第2のアンダーフィル樹脂の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きいことを特徴とする半導体装置。
(2)
前記チップ及び前記アンダーフィル樹脂を封止する片面封止型の封止樹脂を有し、
前記封止樹脂は、熱硬化性であり、且つ、その熱膨張係数が前記基板の熱膨張係数よりも大きいことを特徴とする(1)に記載の半導体装置。
(3)
前記第2のアンダーフィル樹脂が前記第1のアンダーフィル樹脂の外側から前記チップの上面に亘って形成され、
前記第2のアンダーフィル樹脂の熱膨張係数が前記封止樹脂の熱膨張係数よりも大きいことを特徴とする(2)に記載の半導体装置。
(4)
前記チップ上に積層された1つ以上の第2のチップを有し、
前記封止樹脂は、前記第2のチップも封止しており、
前記第2のアンダーフィル樹脂が前記第1のアンダーフィル樹脂の外側から前記チップの上面に亘って形成され、
前記第2のアンダーフィル樹脂の熱膨張係数が前記封止樹脂の熱膨張係数よりも大きいことを特徴とする(2)に記載の半導体装置。
(5)
前記第1のアンダーフィル樹脂が前記チップの端面よりも外側にはみだしており、
前記チップからの前記第1のアンダーフィル樹脂のはみ出し幅の最大値が800μm以下であることを特徴とする(1)乃至(4)の何れか1つに記載の半導体装置。
(6)
前記第1のアンダーフィル樹脂が前記チップの端面よりも内側に収まっていることを特徴とする(1)乃至(4)の何れか1つに記載の半導体装置。
(7)
半導体チップの素子形成面が、基板の一方の面に対向するように、複数のバンプを介して前記基板に前記半導体チップを接続する第1工程と、
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間にアンダーフィル樹脂を充填する第2工程と、
を有し、
前記第2工程は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に、前記基板よりも熱膨張係数が小さい第1のアンダーフィル樹脂を形成する第3工程と、
前記第1のアンダーフィル樹脂の外側に、前記第1のアンダーフィル樹脂よりも熱膨張係数が大きい第2のアンダーフィル樹脂を形成する第4工程と、
を含むことを特徴とする半導体装置の製造方法。
(8)
前記第3工程は、前記第1工程の後で、前記素子形成面と前記一方の面との間に前記第1のアンダーフィル樹脂を注入する工程であることを特徴とする(7)に記載の半導体装置の製造方法。
(9)
前記第3工程は、
前記第1工程の前に、前記素子形成面と前記一方の面とのうちの少なくとも何れか一方に、前記第1のアンダーフィル樹脂の構成材料を配置する工程を含むことを特徴とする(7)に記載の半導体装置の製造方法。
(10)
前記第1のアンダーフィル樹脂の前記構成材料は、フィルム状の樹脂であることを特徴とする(9)に記載の半導体装置の製造方法。
2 半導体チップ
3 バンプ
3a バンプ(最外周に配置されているバンプ)
4 第1のアンダーフィル樹脂
5 第2のアンダーフィル樹脂
6 アンダーフィル樹脂
7 BGAボール
8 樹脂
10 半導体装置
11 基板加熱ステージ
12 チップ加熱ツール
13 第1の注入ノズル
14 第2の注入ノズル
20 半導体装置
30 半導体装置
40 半導体装置
41 封止樹脂
50 半導体装置
51 第2のチップ
52 ボンディングワイヤ
53 封止樹脂
60 半導体装置
W はみ出し幅
Claims (5)
- 半導体装置であって、
基板と、
複数のバンプを介して前記基板の一方の面に接続され、該一方の面に素子形成面が対向している半導体チップと、
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間に充填されたアンダーフィル樹脂と、
を有し、
前記アンダーフィル樹脂は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に形成された第1のアンダーフィル樹脂と、
前記第1のアンダーフィル樹脂の外側に形成された第2のアンダーフィル樹脂と、
を含み、
前記基板の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きく、
前記第2のアンダーフィル樹脂の熱膨張係数が前記第1のアンダーフィル樹脂の熱膨張係数よりも大きく、
当該半導体装置は、
前記半導体チップ及び前記アンダーフィル樹脂を封止する片面封止型の封止樹脂を有し、
前記封止樹脂は、熱硬化性であり、且つ、その熱膨張係数が前記基板の熱膨張係数よりも大きいことを特徴とする半導体装置。 - 前記第2のアンダーフィル樹脂が前記第1のアンダーフィル樹脂の外側から前記半導体チップの上面に亘って形成され、
前記第2のアンダーフィル樹脂の熱膨張係数が前記封止樹脂の熱膨張係数よりも大きいことを特徴とする請求項1に記載の半導体装置。 - 前記半導体チップ上に積層された1つ以上の第2の半導体チップを有し、
前記封止樹脂は、前記第2の半導体チップも封止しており、
前記第2のアンダーフィル樹脂が前記第1のアンダーフィル樹脂の外側から前記半導体チップの上面に亘って形成され、
前記第2のアンダーフィル樹脂の熱膨張係数が前記封止樹脂の熱膨張係数よりも大きいことを特徴とする請求項1又は2に記載の半導体装置。 - 半導体チップの素子形成面が、基板の一方の面に対向するように、複数のバンプを介して前記基板に前記半導体チップを接続する第1工程と、
前記半導体チップの前記素子形成面と前記基板の前記一方の面との間にアンダーフィル樹脂を充填する第2工程と、
前記半導体チップ及び前記アンダーフィル樹脂を封止する片面封止型の封止樹脂を形成する工程と、
を有し、
前記第2工程は、
前記複数のバンプのうち最外周に配置されている複数のバンプの配置領域及びその内側に、前記基板よりも熱膨張係数が小さい第1のアンダーフィル樹脂を形成する第3工程と、
前記第1のアンダーフィル樹脂の外側に、前記第1のアンダーフィル樹脂よりも熱膨張係数が大きい第2のアンダーフィル樹脂を形成する第4工程と、
を含み、
前記封止樹脂は、熱硬化性であり、且つ、その熱膨張係数が前記基板の熱膨張係数よりも大きいことを特徴とする半導体装置の製造方法。 - 前記第3工程は、前記第1工程の後で、前記素子形成面と前記一方の面との間に前記第1のアンダーフィル樹脂を注入する工程であることを特徴とする請求項4に記載の半導体装置の製造方法。
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