JP2021136241A - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
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- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
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Abstract
Description
[先行技術文献]
[特許文献]
[特許文献1] 国際公開第2017/141560号
Claims (19)
- 半導体基板と、
前記半導体基板に設けられたトランジスタ部と、
前記トランジスタ部に流れる電流を検出するための電流センス部と、
前記トランジスタ部のエミッタ電位に設定されたエミッタ電極と、
前記電流センス部と電気的に接続されたセンス電極と、
前記エミッタ電極と前記センス電極との間で電気的に接続されたツェナーダイオードと
を備える半導体装置。 - 前記ツェナーダイオードは、前記半導体基板上に設けられる
請求項1に記載の半導体装置。 - 前記エミッタ電位に設定され、前記ツェナーダイオードと電気的に接続されたエミッタ電位電極を備える
請求項1または2に記載の半導体装置。 - 前記半導体基板に設けられ、前記エミッタ電位に設定された第2導電型のウェル領域と、
前記エミッタ電位電極と前記ウェル領域との間に設けられた層間絶縁膜と、
前記層間絶縁膜のコンタクトホールに設けられ、前記エミッタ電位電極と前記ウェル領域とを電気的に接続するコンタクト部と、
を備える請求項3に記載の半導体装置。 - 前記センス電極は、上面視で、矩形に形成され、
前記ツェナーダイオードは、前記センス電極の少なくとも2辺に沿って設けられる
請求項4に記載の半導体装置。 - 前記ツェナーダイオードは、前記センス電極の少なくとも3辺に沿って設けられる
請求項5に記載の半導体装置。 - 前記半導体基板の上方において、前記エミッタ電位電極と前記エミッタ電極とを接続する電極接続部を備える
請求項3から6のいずれか一項に記載の半導体装置。 - 前記ツェナーダイオードは、第1導電型領域および第2導電型領域を有し、
前記第1導電型領域および前記第2導電型領域は、上面視において、並んで配置されている
請求項1から7のいずれか一項に記載の半導体装置。 - 前記第1導電型領域および前記第2導電型領域の膜厚は、それぞれ0.3μm以上、1μm以下である
請求項8に記載の半導体装置。 - 前記半導体基板に設けられたダイオードを有する温度センス部を備え、
前記温度センス部の前記ダイオードと前記ツェナーダイオードの膜厚が略同一である
請求項1から9のいずれか一項に記載の半導体装置。 - 前記ツェナーダイオードの接合長は、0.6mm以上、3.0mm以下である
請求項1から10のいずれか一項に記載の半導体装置。 - 前記ツェナーダイオードは、
第2導電型のウェル領域と、
前記半導体基板において、前記ウェル領域の上方に設けられた第1導電型領域と、
前記半導体基板において、前記第1導電型領域の上方に設けられた第2導電型領域と
を有する
請求項1または2に記載の半導体装置。 - 前記トランジスタ部は、
第1導電型のドリフト領域と、
前記ドリフト領域のおもて面側に設けられた第2導電型のベース領域と、
前記ドリフト領域よりも高ドーピング濃度である第1導電型のエミッタ領域と、
前記ベース領域よりも高ドーピング濃度である第2導電型のコレクタ領域と
を有し、
前記第1導電型領域は、前記エミッタ領域と同一の膜厚およびドーピング濃度を有する
請求項12に記載の半導体装置。 - トランジスタ部に半導体基板を設ける段階と、
前記トランジスタ部に流れる電流を検出する電流センス部を設ける段階と、
前記トランジスタ部のエミッタ電位に設定されたエミッタ電極を設ける段階と、
前記電流センス部と電気的に接続されたセンス電極を設ける段階と、
前記エミッタ電極と前記センス電極との間で電気的に接続されたツェナーダイオードを設ける段階と、
を備える半導体装置の製造方法。 - 前記ツェナーダイオードのPN構造は、温度センス部のダイオードのPN構造と共通のプロセスで形成される
請求項14に記載の半導体装置の製造方法。 - 前記エミッタ電位に設定され、前記ツェナーダイオードと電気的に接続されたエミッタ電位電極を設ける段階を備える
請求項14または15に記載の半導体装置の製造方法。 - 前記半導体基板に設けられ、前記エミッタ電位に設定された第2導電型のウェル領域を設ける段階と、
前記エミッタ電位電極と前記ウェル領域との間に層間絶縁膜を設ける段階と、
前記層間絶縁膜にコンタクトホールを設ける段階と、
前記コンタクトホールに、前記エミッタ電位電極と前記ウェル領域とを電気的に接続するコンタクト部を設ける段階と
を備える請求項16に記載の半導体装置の製造方法。 - 前記半導体基板の上方に、前記エミッタ電位電極と前記エミッタ電極とを接続する電極接続部を設ける段階を備える
請求項16または17に記載の半導体装置の製造方法。 - 前記ツェナーダイオードの第1導電型の領域は、前記トランジスタ部の第1導電型のエミッタ領域と共通のプロセスで形成される
請求項14に記載の半導体装置の製造方法。
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US17/133,692 US11830871B2 (en) | 2020-02-21 | 2020-12-24 | Semiconductor device and method for fabricating semiconductor device |
CN202011577395.3A CN113299643A (zh) | 2020-02-21 | 2020-12-28 | 半导体装置及半导体装置的制造方法 |
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