JP7111457B2 - 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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- JP7111457B2 JP7111457B2 JP2017208586A JP2017208586A JP7111457B2 JP 7111457 B2 JP7111457 B2 JP 7111457B2 JP 2017208586 A JP2017208586 A JP 2017208586A JP 2017208586 A JP2017208586 A JP 2017208586A JP 7111457 B2 JP7111457 B2 JP 7111457B2
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Description
[第1の実施の形態に係る半導体装置の構造]
まず、第1の実施の形態に係る半導体装置の構造について説明する。図1は、第1の実施の形態に係る半導体装置を例示する断面図であり、図1(a)は全体図、図1(b)は図1(a)のA部の部分拡大断面図である。
次に、第1の実施の形態に係る半導体装置の製造方法について説明する。図2及び図3は、第1の実施の形態に係る半導体装置の製造工程を例示する図である。配線基板10は、半導体装置1となる複数の領域が設けられた多数個取りの基板の状態で製造される。そして、配線基板10上に半導体チップ50の実装等が行われ、最終的に個片化されて個々の半導体装置1となる。以下では、便宜上、個片化される1つの領域のみを図示する。
第2の実施の形態では、第1の実施の形態とは異なる材料によりバリア層を形成する例を示す。なお、第2の実施の形態において、既に説明した実施の形態と同一構成部についての説明は省略する場合がある。
10 配線基板
11 絶縁層
12、13 配線層
14 貫通配線
15 ソルダーレジスト層
15x、20x 開口部
20 接着樹脂層
30、30A バリア層
40 導電性ペースト
50 半導体チップ
51 本体
52 電極端子
60 封止樹脂層
Claims (16)
- 配線基板と、
前記配線基板の上面に実装された半導体チップと、
前記配線基板の上面と前記半導体チップの下面間に配置され、前記配線基板と前記半導体チップとを接着する接着樹脂層と、を有し、
前記接着樹脂層には、前記配線基板の上面に設けられた配線層の上面を露出する開口部が設けられ、
前記開口部の側壁はバリア層により被覆され、
前記半導体チップの下面に設けられた電極端子が前記開口部内に入り込み、前記バリア層と前記電極端子との間に導電性ペーストが充填され、
前記電極端子は銅ポストからなり、前記銅ポストが直接前記導電性ペーストと接している半導体装置。 - 配線基板と、
前記配線基板の上面に実装された半導体チップと、
前記配線基板の上面と前記半導体チップの下面間に配置され、前記配線基板と前記半導体チップとを接着する接着樹脂層と、を有し、
前記接着樹脂層には、前記配線基板の上面に設けられた配線層の上面を露出する開口部が設けられ、
前記開口部の側壁はバリア層により被覆され、
前記半導体チップの下面に設けられた電極端子が前記開口部内に入り込み、前記バリア層と前記電極端子との間に導電性ペーストが充填され、
前記導電性ペーストは、前記電極端子及び前記配線層と直接接している半導体装置。 - 前記バリア層は、前記開口部の側壁と前記開口部内に露出する前記配線層の上面を連続的に被覆している請求項1に記載の半導体装置。
- 前記電極端子は銅ポストからなり、前記銅ポストが直接前記導電性ペーストと接している請求項2に記載の半導体装置。
- 前記バリア層は金属材料から形成されている請求項1乃至4の何れか一項に記載の半導体装置。
- 前記バリア層は金属酸化物から形成されている請求項1、2、又は4に記載の半導体装置。
- 前記導電性ペーストは、バインダーとなる樹脂と、前記樹脂に分散された金属粉末と、を含む請求項1乃至6の何れか一項に記載の半導体装置。
- 前記バリア層は、前記金属粉末よりも硬度が高い材料からなる請求項7に記載の半導体装置。
- 前記バリア層の厚さは、30nm以上100nm以下である請求項1乃至8の何れか一項に記載の半導体装置。
- 前記電極端子は、前記導電性ペーストを介して前記配線層と電気的に接続されている請求項1乃至9の何れか一項に記載の半導体装置。
- 上面側に配線層を備えた配線基板上に、前記配線層を被覆する半硬化状態の接着樹脂層を配置する工程と、
前記接着樹脂層に、搭載する半導体チップの電極端子と対向すると共に前記配線層の上面を露出する開口部を形成する工程と、
前記開口部の側壁と前記開口部内に露出する前記配線層の上面とを連続的に被覆するバリア層を形成する工程と、
前記バリア層の前記配線層の上面を被覆する部分を除去する工程と、
前記バリア層が形成された前記開口部内に導電性ペーストを充填する工程と、
前記半導体チップを、前記電極端子が前記導電性ペーストと接するように前記配線基板上に配置し、前記電極端子が前記開口部内に入り込み、前記バリア層と前記電極端子との間に導電性ペーストが充填されるように、前記半導体チップを前記配線基板側に押圧する工程と、
前記接着樹脂層及び前記導電性ペーストを硬化させ、前記配線基板と前記半導体チップの対向する面間を前記接着樹脂層で接着する工程と、を有し、
前記導電性ペーストが前記電極端子と直接接する半導体装置の製造方法。 - 上面側に配線層を備えた配線基板上に、前記配線層を被覆する半硬化状態の接着樹脂層を配置する工程と、
前記接着樹脂層に、搭載する半導体チップの電極端子と対向すると共に前記配線層の上面を露出する開口部を形成する工程と、
前記開口部の側壁と前記開口部内に露出する前記配線層の上面とを連続的に被覆するバリア層を形成する工程と、
前記バリア層が形成された前記開口部内に導電性ペーストを充填する工程と、
前記半導体チップを、前記電極端子が前記導電性ペーストと接するように前記配線基板上に配置し、前記電極端子が前記開口部内に入り込み、前記バリア層と前記電極端子との間に導電性ペーストが充填されるように、前記半導体チップを前記配線基板側に押圧する工程と、
前記接着樹脂層及び前記導電性ペーストを硬化させ、前記配線基板と前記半導体チップの対向する面間を前記接着樹脂層で接着する工程と、を有し、
前記電極端子は銅ポストからなり、前記銅ポストが直接前記導電性ペーストと接する半導体装置の製造方法。 - 前記開口部を形成する工程より前に、前記接着樹脂層上に保護フィルムを設ける工程を有し、
前記開口部を形成する工程では、前記接着樹脂層及び前記保護フィルムを貫通し前記配線層の上面を露出する開口部を形成し、
前記バリア層を形成する工程では、前記保護フィルムの上面と前記開口部の側壁と前記開口部内に露出する前記配線層の上面とを連続的に被覆するバリア層を形成し、
前記導電性ペーストを充填する工程の後、前記保護フィルムと前記保護フィルムに接して形成されていた前記バリア層を除去する請求項12に記載の半導体装置の製造方法。 - 前記バリア層を金属材料から形成する請求項12又は13に記載の半導体装置の製造方法。
- 前記バリア層を金属酸化物から形成する請求項11に記載の半導体装置の製造方法。
- 前記電極端子は銅ポストからなり、前記銅ポストが直接前記導電性ペーストと接する請求項11又15に記載の半導体装置の製造方法。
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