JP4551255B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP4551255B2 JP4551255B2 JP2005100488A JP2005100488A JP4551255B2 JP 4551255 B2 JP4551255 B2 JP 4551255B2 JP 2005100488 A JP2005100488 A JP 2005100488A JP 2005100488 A JP2005100488 A JP 2005100488A JP 4551255 B2 JP4551255 B2 JP 4551255B2
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- Prior art keywords
- electrode
- wiring board
- semiconductor chip
- main surface
- hole
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Description
(1)複数のLSIチップ間を最短の配線長で三次元的に接続することを可能とし、下記の効果を得ることができる。
(2)圧接時の塑性流動により貫通電極孔内への注入された金属製バンプは、そのスプリングバック作用により、貫通電極孔内のメッキ電極部と安定した接合状態で維持されるため、常温(0℃以上30℃以下)での圧接のみで電気的な接続を実現できる、
(3)常温での接続が可能であるため、接続ピッチの微細化に対して、例えば、有機系の配線基板と半導体チップ(Si)のように熱膨張差の大きい材料間でも安定した接続が可能となる、
(4)接続プロセスは従来の金のスタッドバンプを用いた圧接工法と同様な装置で対応できるのに加え、必ずしも加熱プロセスを用いる必要がない、等の効果が得られる。
(実施形態1)
図1乃至図4は、本発明の実施形態1である半導体装置に係わる図であり、図5乃至図7は、貫通電極部の詳細構造を拡大して示した断面図である。
と考えられる。
)を用いて圧接注入した後のバンプ接合部断面形状(縦方向断面及び横方向断面)を示している。この場合、スタッドバンプのような円筒形状ではなく、周方向に突起したバンプ形状をメッキプロセスにより形成し、複数の突起部が形成されたメッキバンプを前記貫通孔内部に圧接注入することにより、前記突起部と貫通孔内壁のメッキ電極間で接触圧力を発生させることで電気的な導通が達成される。前記メッキバンプと貫通孔内壁間を多点接続構造にすることにより、圧接注入時のバンプの変形体積を減少させ、今後の多ピン化に対してもより低荷重での圧接注入を可能とするのに加え、例えば初期的に封止用樹脂を塗布した後の接続の場合には、貫通孔内部の樹脂を圧接時に排斥しやすくなるという効果を併せもつことができる。ここに示したメッキバンプの形状はその実施例を示したものであり、前記貫通孔内部との多点接続を実現するメッキバンプ形状であれば本発明と同等であるのは言うまでもない。
(実施形態2)
図11は、本発明の実施形態2である半導体装置に係わる図である。
(参考形態)
図12は、参考形態である半導体装置に係わる図である。図2乃至図4で示した製造方法に準じて、例えば図2、3で示したリールテープ状またはマトリクスシート状に形成された配線基板5B上に半導体チップが前記接続方法により搭載され、各々に個片化され良品選別された半導体パッケージについて、図示のように前記配線基板5Bの裏面側に金属製バンプ2が形成され、上下配線基板間もまた同様な接続方法により三次元に積層することで製造される。前記各配線基板の裏面側に形成される金属製バンプは、参考形態で示すような金のスタッドバンプやメッキバンプでもよいが、例えばはんだバンプを形成し、下段側配線基板の貫通孔3内部に加熱しながら溶融接合させてもよい。参考形態では半導体チップに貫通孔を形成する必要はなく、異種の半導体チップであっても各々の配線基板を介した三次元接続を可能とし、また個々のパッケージごとの良品選別を可能とする。
Claims (3)
- 第1の配線基板と、前記第1の配線基板上に搭載された第1の半導体チップと、第2の配線基板と、前記第2の配線基板上に搭載された前記第1の半導体チップとは異なる第2の半導体チップとを有し、前記第1の半導体チップ上に前記第2の配線基板を介在して前記第2の半導体チップが積層された構造において、
前記第1の配線基板は、互いに反対側に位置する主面及び裏面と、前記主面に配置された第1の電極と、前記第1の電極上に配置され、前記主面から突出する第1の突起状電極と、前記裏面から前記第1の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第1の電極と電気的に接続された第2の電極とを有し、
前記第1の半導体チップは、互いに反対側に位置する主面及び裏面と、前記主面に配置された第3の電極と、前記第3の電極上に配置され、前記主面から突出する第2の突起状電極と、前記裏面から前記第3の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第3の電極と電気的に接続された第4の電極とを有し、
前記第2の半導体チップは、互いに反対側に位置する主面及び裏面と、前記主面に配置された第5の電極と、前記第5の電極上に配置され、前記主面から突出する第3の突起状電極とを有し、
前記第2の配線基板は、互いに反対側に位置する主面及び裏面と、前記主面に配置された第6の電極と、前記第6の電極上に配置され、前記主面から突出する第4の突起状電極と、前記裏面から前記第6の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第6の電極と電気的に接続された第7の電極とを有し、
前記第1の半導体チップの第2の突起状電極は、その一部が前記第1の配線基板の第2の電極を介在して前記第1の配線基板の貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記第1の配線基板の第1の電極と電気的に接続されており、
前記第2の半導体チップの第3の突起状電極は、その一部が前記第2の配線基板の第7の電極を介在して前記第2の配線基板の貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記第2の配線基板の第6の電極と電気的に接続されており、
前記第2の配線基板の第4の突起状電極は、その一部が前記第1の半導体チップの第4の電極を介在して前記第1の半導体チップの貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記第1の半導体チップの第3の電極と電気的に接続されていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1および第2の配線基板は、リールテープ状またはマトリクスシート状に形成され、前記第1および第2の半導体チップのテスト用パターンを有していることを特徴とする半導体装置。 - 第1の配線基板と、前記第1の配線基板上に搭載された第1の半導体チップと、第2の配線基板と、前記第1の半導体チップとは異なる複数個の第2の半導体チップとを有し、前記第1の半導体チップ上に前記第2の配線基板を介在して前記複数個の第2の半導体チップが相互に積層された構造において、
前記第1の配線基板は、互いに反対側に位置する主面及び裏面と、前記主面に配置された第1の電極と、前記第1の電極上に配置され、前記主面から突出する第1の突起状電極と、前記裏面から前記第1の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第1の電極と電気的に接続された第2の電極とを有し、
前記第1の半導体チップは、互いに反対側に位置する主面及び裏面と、前記主面に配置された第3の電極と、前記第3の電極上に配置され、前記主面から突出する第2の突起状電極と、前記裏面から前記第3の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第3の電極と電気的に接続された第4の電極とを有し、
前記複数個の第2の半導体チップは、その最上段のチップを除いて、互いに反対側に位置する主面及び裏面と、前記主面に配置された第5の電極と、前記第5の電極上に配置され、前記主面から突出する第3の突起状電極と、前記裏面から前記第5の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第5の電極と電気的に接続された第6の電極とを有すると共に、前記最上段のチップは、互いに反対側に位置する主面及び裏面と、前記主面に配置された第5の電極上に配置され、前記主面から突出する第3の突起状電極を有し、
前記第2の配線基板は、互いに反対側に位置する主面及び裏面と、前記主面に配置された第7の電極と、前記第7の電極上に配置され、前記主面から突出する第4の突起状電極と、前記裏面から前記第7の電極に達する貫通孔と、前記貫通孔の内壁面に沿って形成され、前記第7の電極と電気的に接続された第8の電極とを有し、
前記第1の半導体チップの第2の突起状電極は、その一部が前記第1の配線基板の第2の電極を介在して前記第1の配線基板の貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記第1の配線基板の第1の電極と電気的に接続されており、
前記第2の半導体チップの第3の突起状電極は、その一部が前記第2の半導体チップの第6の電極並びに前記第2の配線基板の第8の電極を介在して前記第2の半導体チップ並びに前記第2の配線基板の貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記複数個の第2の半導体チップの第5の電極と前記第2の配線基板の第7の電極と電気的に接続されており、
前記第2の配線基板の第4の突起状電極は、その一部が前記第1の半導体チップの第4の電極を介在して前記第1の半導体チップの貫通孔の中に、塑性流動を伴う変形によって圧接注入され、前記第1の半導体チップの第3の電極と電気的に接続されていることを特徴とする半導体装置。
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