JP2018190900A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP2018190900A JP2018190900A JP2017094071A JP2017094071A JP2018190900A JP 2018190900 A JP2018190900 A JP 2018190900A JP 2017094071 A JP2017094071 A JP 2017094071A JP 2017094071 A JP2017094071 A JP 2017094071A JP 2018190900 A JP2018190900 A JP 2018190900A
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- Prior art keywords
- main surface
- layer
- insulating film
- wiring layer
- semiconductor device
- Prior art date
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Abstract
Description
図1〜図9に基づき、本発明の第1実施形態にかかる半導体装置A10について説明する。半導体装置A10は、基板1、内部配線層21、柱状導電体22、半導体素子31および封止樹脂4を備え、半導体素子31には、放熱層59が配置されている。本実施形態では、半導体装置A10はさらに、内部絶縁膜19、保護膜29、受動素子32、外部絶縁膜51、外部配線層52および端子6を備える。また、内部配線層21には、第1接合層27および第2接合層28が設けられている。ここで、本発明の特許請求の範囲において、「接合層」は、第1接合層27を指す。
図31〜図34に基づき、本発明の第2実施形態にかかる半導体装置A20について説明する。これらの図において、先述した半導体装置A10と同一または類似の要素には同一の符号を付して、重複する説明を省略することとする。
1:基板
11:基板主面
12:裏面
13:凹部
131:底面
132:中間面
19:内部絶縁膜
20a:下地層
20b:めっき層
21:内部配線層
211:第1配線層
212:第2配線層
212a:底面部
212b:中間面部
22:柱状導電体
221:頂面
222:側面
27:第1接合層
28:第2接合層
29:保護膜
31:半導体素子
31a:電極バンプ
311:素子主面
312:素子裏面
313:素子側面
32:受動素子
32a:電極バンプ
4:封止樹脂
41:樹脂主面
51:外部絶縁膜
511:第1絶縁膜
511a:第1開口部
512:第2絶縁膜
512a:第2開口部
52:外部配線層
521:第1埋込部
522:第2埋込部
523:中間部
59:放熱層
591:第1層
592:第2層
593:第3層
594:第4層
6:端子
80:基材
801:主面
802:第1絶縁膜
803:開口部
804:第2絶縁膜
81:凹部
811:底面
812:中間面
821:第1下地層
822:第1めっき層
823:接合層
824:柱状体
825:保護膜
831:第1素子
831a:電極パッド
832:第2素子
832a:電極パッド
84:封止樹脂
851:第3絶縁膜
851a:第1開口
851b:第2開口
852:第4絶縁膜
852a:第3開口
852b:第4開口
861:第2下地層
862:第2めっき層
863:第3下地層
864:第3めっき層
865:第4下地層
866:第4めっき層
87:金属薄膜
z:厚さ方向
x:第1方向
y:第2方向
Claims (17)
- 真性半導体材料から構成され、かつ厚さ方向を向く基板主面を有するとともに、前記基板主面から窪む凹部が設けられた基板と、
前記基板主面および前記凹部に配置された内部配線層と、
前記基板主面に配置された前記内部配線層から前記基板主面が向く方向に向けて突出する柱状導電体と、
前記基板主面と同方向を向く素子主面を有し、かつ前記内部配線層に導通する半導体素子と、
前記凹部に充填され、かつ前記柱状導電体および前記半導体素子のそれぞれ一部ずつを覆う封止樹脂と、を備える半導体装置であって、
前記基板の厚さ方向視において、前記半導体素子は、前記凹部に重なる部分を有し、
前記素子主面に接し、かつ外部に露出する放熱層が配置されていることを特徴とする、半導体装置。 - 前記内部配線層は、前記基板主面に配置された第1配線層と、前記凹部に配置された第2配線層と、を含み、
前記半導体素子は、前記厚さ方向視において前記凹部を跨いだ状態で前記第1配線層に搭載されている、請求項1に記載の半導体装置。 - 前記第2配線層に搭載され、かつ前記凹部に収容された受動素子をさらに備える、請求項2に記載の半導体装置。
- 前記内部配線層は、前記基板主面に配置された第1配線層と、前記凹部に配置された第2配線層と、を含み、
前記半導体素子は、前記第2配線層に搭載され、
前記厚さ方向において前記素子主面が、前記基板主面に対して前記凹部から離れて位置する、請求項1に記載の半導体装置。 - 前記第1配線層から前記基板主面が向く方向に向けて突出し、かつ前記柱状導電体から離間して位置する接合層が前記第1配線層に設けられ、
前記半導体素子は、前記接合層に接合されている、請求項2または3に記載の半導体装置。 - 前記第2配線層から前記凹部の内方に向けて突出する接合層が前記第2配線層に設けられ、
前記半導体素子は、前記接合層に接合されている、請求項4に記載の半導体装置。 - 前記第1配線層および前記第2配線層を覆う保護膜をさらに備え、
前記柱状導電体および前記接合層は、各々の一部が前記保護膜から突出している、請求項5または6に記載の半導体装置。 - 前記凹部は、前記基板主面に対して平行である底面と、前記底面および前記基板主面の双方につながり、かつ前記底面に対して傾斜している中間面と、を有し、
前記基板主面、前記底面および前記中間面を覆う内部絶縁膜をさらに備え、
前記内部配線層は、前記内部絶縁膜の表面に接している、請求項1ないし7のいずれかに記載の半導体装置。 - 前記内部絶縁膜は、AlNから構成される、請求項8に記載の半導体装置。
- 前記底面は、矩形状であり、
前記中間面は、前記底面の端縁を取り囲んでいる、請求項8または9に記載の半導体装置。 - 前記真性半導体材料は、Siである、請求項8ないし10のいずれかに記載の半導体装置。
- 前記柱状導電体は、前記基板主面と同方向を向く頂面を有し、
前記封止樹脂は、前記基板主面と同方向を向く樹脂主面を有し、
前記頂面および前記樹脂主面は、ともに前記素子主面と面一である、請求項1ないし11のいずれかに記載の半導体装置。 - 前記素子主面の一部および前記樹脂主面を覆い、かつ外部に露出する外部絶縁膜をさらに備え、
前記放熱層は、前記外部絶縁膜から露出している、請求項12に記載の半導体装置。 - 前記柱状導電体に導通し、かつ外部に接続される端子をさらに備え、
前記端子は、前記外部絶縁膜から露出している、請求項13に記載の半導体装置。 - 前記外部絶縁膜は、前記素子主面の一部および前記樹脂主面に接する第1絶縁膜と、前記第1絶縁膜に接し、かつ外部に露出する第2絶縁膜と、を有し、
前記第1絶縁膜および前記第2絶縁膜の内部に配置され、かつ前記柱状導電体と前記端子とを接続する外部配線層をさらに備える、請求項14に記載の半導体装置。 - 前記第1絶縁膜には、前記厚さ方向に沿って前記第1絶縁膜を貫通し、かつ前記柱状導電体の前記頂面に通じる第1開口部が形成され、
前記第2絶縁膜には、前記厚さ方向に沿って前記第2絶縁膜を貫通する第2開口部が形成され、
前記外部配線層は、前記第1開口部に埋め込まれ、かつ前記頂面に接する第1埋込部と、前記第2開口部に埋め込まれ、かつ前記端子に接する第2埋込部と、を有する、請求項15に記載の半導体装置。 - 前記外部配線層は、前記第1絶縁膜と前記第2絶縁膜との間に介在し、かつ前記第1埋込部および前記第2埋込部の双方につながる中間部をさらに有する、請求項16に記載の半導体装置。
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