JP2014011453A - 抵抗回路を通じて相互接続される電流搬送領域および分離構造体を有する半導体デバイスおよびドライバ回路ならびにその製造方法 - Google Patents
抵抗回路を通じて相互接続される電流搬送領域および分離構造体を有する半導体デバイスおよびドライバ回路ならびにその製造方法 Download PDFInfo
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Abstract
【解決手段】半導体基板210と、基板上面212の下の埋め込み層220と、基板上面と埋め込み層との間のシンカ領域222であって、シンカ領域および埋め込み層によって分離構造体が形成される、シンカ領域と、半導体基板において、分離構造体によって収容される該半導体基板の部分内に位置するアクティブデバイスであって、アクティブデバイスはソース領域238およびドレイン領域236から選択される電流搬送領域を備える、アクティブデバイスと、分離構造体と電流搬送領域との間に接続される抵抗回路とを備える半導体デバイスを提供する。
【選択図】図2
Description
請求項3に記載の発明は、請求項1に記載の半導体デバイスにおいて、前記抵抗回路は、第1の抵抗ネットワークと、前記第1の抵抗ネットワークに結合されるショットキーダイオードであって、該ショットキーダイオードは分離領域に結合されるショットキーコンタクトから形成される、前記ショットキーダイオードとを含む、ことを要旨とする。
請求項5に記載の発明は、請求項3に記載の半導体デバイスにおいて、前記ショットキーダイオードは前記第1の抵抗ネットワークに並列に結合される、ことを要旨とする。
請求項10に記載の発明は、請求項8に記載の半導体デバイスにおいて、前記PN接合ダイオードは前記第1の抵抗ネットワークに並列に結合される、ことを要旨とする。
請求項14に記載の発明は、請求項1に記載の半導体デバイスにおいて、前記電流搬送領域は前記アクティブデバイスのドレイン領域であり、該ドレイン領域は前記第2の導電型である、ことを要旨とする。
請求項20に記載の発明は、請求項18に記載のドライバ回路において、前記抵抗回路は、第1の抵抗ネットワークと、前記第1の抵抗ネットワークに結合されるショットキーダイオードであって、該ショットキーダイオードは前記分離領域に結合されるショットキーコンタクトから形成される、前記ショットキーダイオードとを含む、ことを要旨とする。
請求項25に記載の発明は、請求項22に記載のドライバ回路において、前記PN接合ダイオードは前記第1の抵抗ネットワークに並列に結合され、前記抵抗回路は、前記PN接合ダイオードに直列に結合される第2の抵抗ネットワークをさらに含む、ことを要旨とする。
下記の詳細な説明は単なる例示に過ぎず、実施形態またはさまざまな実施形態の適用および使用を限定することは意図されていない。さらに、上記技術分野もしくは背景技術または下記の詳細な説明において提示される、いかなる表示または暗示された理論によっても束縛されることは意図されていない。
Claims (30)
- 半導体デバイスであって、
第1の導電型および基板上面を有する半導体基板と、
前記基板上面の下の埋め込み層であって、該埋め込み層は前記第1の導電型と異なる第2の導電型を有する、前記埋め込み層と、
前記基板上面と前記埋め込み層との間のシンカ領域であって、該シンカ領域は前記第2の導電型を有し、該シンカ領域および前記埋め込み層によって分離構造体が形成される、シンカ領域と、
前記半導体基板において、前記分離構造体によって収容される該半導体基板の部分内に位置するアクティブデバイスであって、該アクティブデバイスはソース領域およびドレイン領域から選択される電流搬送領域を備える、前記アクティブデバイスと、
前記分離構造体と前記電流搬送領域との間に接続される抵抗回路とを備える、半導体デバイス。 - 前記抵抗回路は、多結晶シリコン抵抗器を含む、請求項1に記載の半導体デバイス。
- 前記抵抗回路は、
第1の抵抗ネットワークと、
前記第1の抵抗ネットワークに結合されるショットキーダイオードであって、該ショットキーダイオードは分離領域に結合されるショットキーコンタクトから形成される、前記ショットキーダイオードとを含む、請求項1に記載の半導体デバイス。 - 前記ショットキーダイオードは前記第1の抵抗ネットワークに直列に結合される、請求項3に記載の半導体デバイス。
- 前記ショットキーダイオードは前記第1の抵抗ネットワークに並列に結合される、請求項3に記載の半導体デバイス。
- 前記抵抗回路は、前記ショットキーダイオードに直列に結合される第2の抵抗ネットワークをさらに含む、請求項5に記載の半導体デバイス。
- 前記抵抗回路は、前記ショットキーダイオードに並列に結合されるPN接合ダイオードをさらに含む、請求項3に記載の半導体デバイス。
- 前記抵抗回路は、
第1の抵抗ネットワークと、
前記第1の抵抗ネットワークに結合されるPN接合ダイオードとを含む、請求項1に記載の半導体デバイス。 - 前記PN接合ダイオードは前記第1の抵抗ネットワークに直列に結合される、請求項8に記載の半導体デバイス。
- 前記PN接合ダイオードは前記第1の抵抗ネットワークに並列に結合される、請求項8に記載の半導体デバイス。
- 前記抵抗回路は、
前記PN接合ダイオードに直列に結合される第2の抵抗ネットワークをさらに含む、請求項10に記載の半導体デバイス。 - 前記シンカ領域に延びる前記第1の導電型のさらなる領域をさらに備え、前記PN接合ダイオードは、前記さらなる領域と前記シンカ領域との間に形成される、請求項8に記載の半導体デバイス。
- 前記PN接合ダイオードは多結晶シリコンダイオードを含む、請求項8に記載の半導体デバイス。
- 前記電流搬送領域は前記アクティブデバイスのドレイン領域であり、該ドレイン領域は前記第2の導電型である、請求項1に記載の半導体デバイス。
- 前記アクティブデバイスは、
アクティブ領域の中央部分における前記第2の導電型のドリフト領域であって、前記基板上面から前記半導体基板内へ延びる、前記ドリフト領域と、
前記基板上面から前記ドリフト領域内へ延びる前記ドレイン領域と、
前記ドリフト領域と前記分離構造体との間において前記基板上面から前記半導体基板内へ延びる前記第1の導電型のボディ領域と、
前記基板上面から前記ボディ領域内へ延びる前記第2の導電型のソース領域と、
前記ボディ領域における前記第1の導電型のボディコンタクト領域であって、前記ソース領域と前記分離構造体との間において前記基板上面から前記半導体基板内へ延びる前記ボディコンタクト領域とを備える、請求項14に記載の半導体デバイス。 - 前記電流搬送領域は前記アクティブデバイスのソース領域であり、該ソース領域は前記第1の導電型である、請求項1に記載の半導体デバイス。
- 前記アクティブデバイスは、
前記アクティブ領域の中央部分における前記第1の導電型のドリフト領域であって、前記基板上面から前記半導体基板内へ延びる、前記ドリフト領域と、
前記基板上面から前記ドリフト領域内へ延びる前記第1の導電型のドレイン領域と、
前記ドリフト領域と前記分離構造体との間において前記基板上面から前記半導体基板内へ延びる前記第2の導電型のボディ領域と、
前記基板上面から前記ボディ領域内へ延びる前記ソース領域とを備える、請求項16に記載の半導体デバイス。 - ドライバ回路であって、
第1の導電型および基板上面を有する半導体基板に形成される第1の横方向拡散金属酸化膜半導体電界効果トランジスタ(LDMOSFET)であって、該第1のLDMOSFETは、
前記基板上面の下の埋め込み層であって、該埋め込み層は前記第1の導電型と異なる第2の導電型を有する、前記埋め込み層と、
前記基板上面と前記埋め込み層との間のシンカ領域であって、該シンカ領域は前記第2の導電型を有し、該シンカ領域および前記埋め込み層によって分離構造体が形成される、シンカ領域と、
前記半導体基板において、前記分離構造体によって収容される該半導体基板の部分内に位置するアクティブデバイスであって、該アクティブデバイスは電流搬送領域を備える、アクティブデバイスと、
前記分離構造体と前記電流搬送領域との間に接続される抵抗回路とを備える、ドライバ回路。 - 前記抵抗回路は、多結晶シリコン抵抗器を含む、請求項18に記載のドライバ回路。
- 前記抵抗回路は、
第1の抵抗ネットワークと、
前記第1の抵抗ネットワークに結合されるショットキーダイオードであって、該ショットキーダイオードは前記分離領域に結合されるショットキーコンタクトから形成される、前記ショットキーダイオードとを含む、請求項18に記載のドライバ回路。 - 前記ショットキーダイオードは前記第1の抵抗ネットワークに並列に結合され、前記抵抗回路は、前記ショットキーダイオードに直列に結合される第2の抵抗ネットワークをさらに含む、請求項20に記載のドライバ回路。
- 前記抵抗回路は、
第1の抵抗ネットワークと、
抵抗ネットワークに結合されるPN接合ダイオードとを含む、請求項18に記載のドライバ回路。 - 前記シンカ領域に延びる前記第1の導電型のさらなる領域をさらに備え、前記PN接合ダイオードは、前記さらなる領域と前記シンカ領域との間に形成される、請求項22に記載のドライバ回路。
- 前記PN接合ダイオードは多結晶シリコンダイオードを含む、請求項22に記載のドライバ回路。
- 前記PN接合ダイオードは前記第1の抵抗ネットワークに並列に結合され、前記抵抗回路は、前記PN接合ダイオードに直列に結合される第2の抵抗ネットワークをさらに含む、請求項22に記載のドライバ回路。
- 半導体デバイスを形成するための方法であって、
第1の導電型を有する半導体基板の基板上面の下に埋め込み層を形成する埋め込み層形成工程であって、該埋め込み層は前記第1の導電型と異なる第2の導電型を有する、前記埋め込み層形成工程と、
前記基板上面と前記埋め込み層との間にシンカ領域を形成するシンカ領域形成工程であって、該シンカ領域は前記第2の導電型を有し、該シンカ領域および前記埋め込み層によって分離構造体が形成される、前記シンカ領域形成工程と、
前記半導体基板において、前記分離構造体によって収容される該半導体基板の部分内に位置するアクティブデバイスを形成するアクティブ領域形成工程であって、該アクティブデバイスは電流搬送領域を備える、前記アクティブ領域形成工程と、
前記分離構造体と前記電流搬送領域との間に接続される抵抗回路を形成する抵抗回路形成工程とを含む、方法。 - 前記抵抗回路形成工程は、
前記抵抗回路の一部として多結晶シリコン抵抗を形成するとともに相互接続する工程を含む、請求項26に記載の方法。 - 前記抵抗回路は抵抗ネットワークおよびショットキーダイオードを含み、前記抵抗回路形成工程は、
前記抵抗ネットワークを形成する工程と、
前記ショットキーダイオードを形成するショットキーダイオード形成工程であって、該ショットキーダイオードは分離領域に結合されるショットキーコンタクトを含む、前記ショットキーダイオード形成工程と、
前記抵抗ネットワークを前記ショットキーコンタクトに結合する工程とを含む、請求項26に記載の方法。 - 前記抵抗回路は抵抗ネットワークおよびPN接合ダイオードを含み、前記抵抗回路形成工程は、
前記抵抗ネットワークを形成する工程と、
前記シンカ領域に延びる前記第1の導電型のさらなる領域を形成する工程であって、前記PN接合ダイオードは前記さらなる領域と前記シンカ領域との間に形成される、前記工程と、
前記抵抗ネットワークを前記さらなる領域に結合する工程とを含む、請求項26に記載の方法。 - 前記抵抗回路は抵抗ネットワークおよびPN接合ダイオードを含み、前記抵抗回路形成工程は、
前記抵抗ネットワークを形成する工程と、
前記PN接合ダイオードを多結晶シリコンダイオードとして形成する工程と、
前記抵抗ネットワークを前記多結晶シリコンダイオードに結合する工程とを含む、請求項26に記載の方法。
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- 2013-06-19 EP EP13172894.1A patent/EP2680299B1/en not_active Not-in-force
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Also Published As
Publication number | Publication date |
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US20140001549A1 (en) | 2014-01-02 |
EP2680299A3 (en) | 2014-12-03 |
EP2680299B1 (en) | 2020-07-22 |
CN103531631B (zh) | 2018-03-09 |
EP2680299A2 (en) | 2014-01-01 |
CN103531631A (zh) | 2014-01-22 |
JP6253271B2 (ja) | 2017-12-27 |
US9704853B2 (en) | 2017-07-11 |
US20140001546A1 (en) | 2014-01-02 |
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