JP5460388B2 - 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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Description
20…半導体素子(チップ)、
20a/20b/20c…フェイス面(第1の面)/背面(第2の面)/側面周囲、
21…電極端子、
30…配線基板(パッケージ)、
31,33,35,37…樹脂層(絶縁層)、
32,34,36,38…配線層、
32a,34a,36a,38a…ビア、
39,40…ソルダレジスト層(保護膜)、
41…はんだボール(外部接続端子)、
51,53…支持体、
52,54…接着剤層(剥離型接着剤)、
P1,P2…パッド、
VH1,VH2,VH3,VH4…ビアホール。
Claims (11)
- 電極端子が形成されている側の第1の面及びこれと反対側の第2の面を有する半導体素子と、
前記半導体素子が埋め込まれた第1の絶縁層と、
前記第2の面側の前記第1の絶縁層に形成された第2の絶縁層と、
前記第1の絶縁層に形成され、前記半導体素子の電極端子に到達する第1のビアホールと、
前記第1の前記絶縁層上に形成され、前記第1のビアホール内に設けられた第1のビアと一体的に形成され、前記電極端子と直接接続された前記第1の配線層と、
前記第2の絶縁層の表面側からレーザ加工されて前記第2の絶縁層及び前記第1絶縁層を貫通して形成され、前記第1の配線層に到達すると共に、前記第2の面側から前記第1の面側になるにつれて直径が小さくなる第2のビアホールと、
前記第2の絶縁層上に形成され、前記第2のビアホール内に設けられた第2のビアによって前記第1の配線層に接続された第2の配線層とを有することを特徴とする半導体装置。 - 前記半導体素子の第1の面と側面とが前記第1の絶縁層に被覆され、前記第2の面が前記第1の絶縁層から露出していることを特徴とする請求項1に記載の半導体装置。
- 前記半導体素子の第2の面が前記第2の絶縁層に接触していることを特徴とする請求項2に記載の半導体装置。
- 前記半導体素子は、前記第2の面側に研削された研削面を備えて、厚みが10〜50μmに薄型化されたシリコンチップであり、
前記シリコンチップの研削面と前記第2の面側の第1の絶縁層の面とが同一面となっており、
前記第2の絶縁層は、前記シリコンチップの研削面を被覆することを特徴とする請求項1に記載の半導体装置。 - 前記第1の面側及び第2の面側において、多層配線構造を有し、それぞれ最外層の配線層を被覆するソルダレジスト層を備え、各ソルダレジスト層は、当該配線層に画定された外部接続用のパッドの部分を露出させて形成されていることを特徴とする請求項1乃至4のいずれか一項に記載の半導体装置。
- 前記半導体素子が埋め込まれた第1の絶縁層は、前記第2の絶縁層よりも厚く形成されていることを特徴とする請求項1乃至4のいずれか一項に記載の半導体装置。
- 電極端子が形成されている側の第1の面及びこれと反対側の第2の面を有する半導体素子を、前記第1の面側を上にして第1の支持体上に搭載する工程と、
前記第1の支持体上に、前記半導体素子を封止するように第1の絶縁層を形成する工程と、
前記第1の絶縁層上に、該第1の絶縁層に形成される第1のビアを介して前記半導体素子の電極端子に接続される第1の配線層を形成する工程と、
前記第1の支持体を除去する工程と、
前記第1の支持体の除去後の構造体を、前記第2の面側を上にして第2の支持体上に搭載する工程と、
前記第2の面上に、前記第1の絶縁層を貫通して形成される第2のビアを介して前記第1の配線層に接続される第2の配線層を形成する工程と、
前記第2の支持体を除去する工程とを含むことを特徴とする半導体装置の製造方法。 - 前記第1の支持体を除去する工程は、前記第1の配線層を被覆する第3の絶縁層を形成した後に行われることを特徴とする請求項7に記載の半導体装置の製造方法。
- 前記第2の支持体上に搭載する工程の後であって、前記第2の配線層を形成する工程の前に、
前記半導体素子の第2の面を前記第1の絶縁層と共に研削し、当該半導体素子を所要の厚さに薄化する工程と、
薄化された前記半導体素子の第2の面及び前記第1の絶縁層上に、第2の絶縁層を形成する工程とを有し、
前記第2の配線層を形成する工程において、前記第2の配線層は前記第2の絶縁層の上に形成され、前記ビアは前記第2の絶縁層及び前記第1の絶縁層を貫通して形成されることを特徴とする請求項7又は8に記載の半導体装置の製造方法。 - 前記第2の支持体を除去する工程は、前記第2の配線層を被覆する第4の絶縁層を形成した後に行われることを特徴とする請求項7又は8に記載の半導体装置の製造方法。
- 前記第4の絶縁層を形成後、前記第2の支持体を除去する前に、
前記第4の絶縁層上に、該第4の絶縁層に形成される第3のビアを介して前記第2の配線層に接続される第3の配線層を形成する工程と、
前記第3の配線層に画定される外部接続用のパッドの部分を露出させてソルダレジスト層を形成する工程とを含み、
さらに前記第2の支持体を除去した後に、
前記第3の絶縁層上に、該第3の絶縁層に形成される第4のビアを介して前記第1の配線層に接続される第4の配線層を形成する工程と、
前記第4の配線層に画定される外部接続用のパッドの部分を露出させてソルダレジスト層を形成する工程とを含むことを特徴とする請求項10に記載の半導体装置の製造方法。
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