JP6437657B2 - 横型絶縁ゲートバイポーラトランジスタ及びその製造方法 - Google Patents
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Description
20 埋め込み酸化層
30 ドリフト領域
41 カソード金属
42 P型ボディ領域
44 P+領域
51 酸化層
52 P型埋め込み層
53 ポリシリコン
54 N型バッファ領域
56 P+コレクタ領域
61 ゲート
Claims (12)
- 基板と、
前記基板上に形成されたアノード側領域及びカソード側領域であって、前記アノード側領域が、前記基板上にかつ前記アノード側領域内にのみ形成されたP型埋め込み層と、前記P型埋め込み層の上方に形成されたN型バッファ領域と、前記N型バッファ領域の表面上に形成されたP+コレクタ領域を含む、アノード側領域及びカソード側領域と、
前記アノード側領域と前記カソード側領域との間に配置されたドリフト領域及びゲートと、
前記N型バッファ領域及び前記P+コレクタ領域の表面から前記P型埋め込み層に延びるトレンチゲートと、
を備える横型絶縁ゲートバイポーラトランジスタであって、
前記トレンチゲートが、トレンチの内面に形成された酸化層、及び前記トレンチ内及び前記酸化層上に満たされたポリシリコンを含み、
前記P型埋め込み層は、前記ドリフト領域によって前記N型バッファ領域から切り離され、
前記P+コレクタ領域、前記N型バッファ領域、前記P型埋め込み層、前記酸化層、及び前記ポリシリコンによって、縦型P−チャンネルMOSFETが形成される、横型絶縁ゲートバイポーラトランジスタ。 - 前記横型絶縁ゲートバイポーラトランジスタは、シリコンオンインシュレータタイプの横型絶縁ゲートバイポーラトランジスタであり、前記横型絶縁ゲートバイポーラトランジスタは、前記基板と前記ドリフト領域との間に配置された埋め込み酸化層をさらに備え、前記P型埋め込み層は、前記埋め込み酸化層の上に配置される、請求項1に記載の横型絶縁ゲートバイポーラトランジスタ。
- 前記基板はP型基板であり、前記ドリフト領域はN型ドリフト領域である、請求項1に記載の横型絶縁ゲートバイポーラトランジスタ。
- 前記カソード側領域は、前記基板上に配置されたP型ボディ領域と、前記P型ボディ領域の表面上に配置されたP+領域及びN+領域とを含む、請求項1に記載の横型絶縁ゲートバイポーラトランジスタ。
- 前記カソード側領域は、カソード金属をさらに備え、前記ゲートは、ゲート酸化層及び前記ゲート酸化層上に配置されたポリシリコンゲートを備える、請求項4に記載の横型絶縁ゲートバイポーラトランジスタ。
- 前記酸化層の厚さは、800オングストロームから2000オングストロームである、請求項1に記載の横型絶縁ゲートバイポーラトランジスタ。
- 横型絶縁ゲートバイポーラトランジスタを製造する方法であって、
ドリフト領域を有する基板を準備するステップと、
高エネルギイオン打ち込みによってP型イオンを、アノード側領域となる前記ドリフト領域の一部に打ち込んで、前記アノード側領域にのみP型埋め込み層を形成するステップと、
前記P型埋め込み層の上方の領域にN型イオンを打ち込んでN型バッファ領域を形成するステップと、
サーマルドライブインを行って、打ち込まれたP型イオン及びN型イオンを拡散させるステップと、
P型イオンをドリフト領域に打ち込んで、熱的アニーリングを行ってP型ボディ領域を形成するステップと、
リソグラフィー及びエッチングを行って、前記N型バッファ領域の表面から前記P型埋め込み層に延びるトレンチを形成するステップと、
前記トレンチの内面に酸化層を形成するステップと、
前記トレンチ及び前記酸化層上をポリシリコンで満たすステップと、
イオン打ち込みを行って前記N型バッファ領域の表面上にP+コレクタ領域を形成し、前記P型ボディ領域の表面上にP+領域及びN+領域を形成するステップと、
を含み、
前記P+コレクタ領域が前記酸化層に接触し、
前記ドリフト領域を有する基板を準備するステップで、前記ドリフト領域と前記基板との間に埋め込み酸化層が形成され、
前記高エネルギイオン打ち込みによってP型イオンを前記ドリフト領域に打ち込むステップで、前記P型埋め込み層が前記埋め込み酸化層上に形成され、
前記P型埋め込み層は、前記ドリフト領域によって前記N型バッファ領域から切り離されており、
前記P+コレクタ領域、前記N型バッファ領域、前記P型埋め込み層、前記酸化層、及び前記ポリシリコンによって、縦型P−チャンネルMOSFETが形成される、方法。 - 前記リソグラフィー及びエッチングを行って、前記N型バッファ領域の表面から前記P型埋め込み層に延びる前記トレンチを形成するステップで、前記エッチングは、反応性イオンエッチングプロセスを用いて行われる、請求項7に記載の方法。
- 前記トレンチの内面に酸化層を形成するステップで、前記酸化層は、熱酸化によって形成され、前記トレンチ及び前記酸化層上をポリシリコンで満たすステップで、蒸着プロセスによってポリシリコンゲートが形成される、請求項7に記載の方法。
- 前記高エネルギイオン打ち込みによってP型イオンを前記ドリフト領域に打ち込むステップで、前記打ち込まれたイオンはホウ素イオンである、請求項7に記載の方法。
- 前記基板はP型基板であり、前記ドリフト領域はN型ドリフト領域である、請求項7に記載の方法。
- 前記P+コレクタ領域は、前記トレンチ内で前記酸化層に接触し、前記P+コレクタ領域は、P−チャンネルMOSFETのドレインとして機能する、請求項7に記載の方法。
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| CN201410799646.0A CN105789298B (zh) | 2014-12-19 | 2014-12-19 | 横向绝缘栅双极型晶体管及其制造方法 |
| CN201410799646.0 | 2014-12-19 | ||
| PCT/CN2015/090914 WO2016095585A1 (zh) | 2014-12-19 | 2015-09-28 | 横向绝缘栅双极型晶体管及其制造方法 |
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| CN107527811B (zh) | 2016-06-21 | 2020-07-10 | 无锡华润上华科技有限公司 | 横向绝缘栅双极型晶体管及其制造方法 |
| CN108389900B (zh) * | 2018-03-19 | 2020-05-26 | 电子科技大学 | 一种槽栅短路阳极soi ligbt |
| TW202137333A (zh) * | 2020-03-24 | 2021-10-01 | 立錡科技股份有限公司 | 具有橫向絕緣閘極雙極性電晶體之功率元件及其製造方法 |
| US11569378B2 (en) | 2020-12-22 | 2023-01-31 | Texas Instruments Incorporated | Semiconductor on insulator on wide band-gap semiconductor |
| US11557673B2 (en) | 2020-12-29 | 2023-01-17 | Texas Instruments Incorporated | Hybrid semiconductor device |
| CN114784102B (zh) * | 2022-05-05 | 2023-05-02 | 电子科技大学 | 一种具有混合导电模式的ligbt |
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| JP4867251B2 (ja) * | 2005-09-26 | 2012-02-01 | トヨタ自動車株式会社 | 半導体装置 |
| US7605446B2 (en) * | 2006-07-14 | 2009-10-20 | Cambridge Semiconductor Limited | Bipolar high voltage/power semiconductor device having first and second insulated gated and method of operation |
| US8174070B2 (en) * | 2009-12-02 | 2012-05-08 | Alpha And Omega Semiconductor Incorporated | Dual channel trench LDMOS transistors and BCD process with deep trench isolation |
| JP5167323B2 (ja) * | 2010-09-30 | 2013-03-21 | トヨタ自動車株式会社 | 半導体装置 |
| CN102169893B (zh) | 2011-03-10 | 2012-12-05 | 杭州电子科技大学 | 一种具有p埋层的横向沟道soi ligbt器件单元 |
| CN102157550B (zh) * | 2011-03-10 | 2012-07-04 | 杭州电子科技大学 | 一种具有p埋层的纵向沟道SOI LIGBT器件单元 |
| CN102148240B (zh) | 2011-03-10 | 2012-08-29 | 电子科技大学 | 一种具有分裂阳极结构的soi-ligbt器件 |
| CN103413824B (zh) * | 2013-07-17 | 2015-12-23 | 电子科技大学 | 一种rc-ligbt器件及其制作方法 |
-
2014
- 2014-12-19 CN CN201410799646.0A patent/CN105789298B/zh active Active
-
2015
- 2015-09-28 WO PCT/CN2015/090914 patent/WO2016095585A1/zh not_active Ceased
- 2015-09-28 US US15/537,753 patent/US10084073B2/en active Active
- 2015-09-28 JP JP2017533196A patent/JP6437657B2/ja active Active
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Also Published As
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|---|---|
| EP3240042B1 (en) | 2026-04-22 |
| EP3240042A1 (en) | 2017-11-01 |
| CN105789298A (zh) | 2016-07-20 |
| EP3240042A4 (en) | 2018-09-19 |
| WO2016095585A1 (zh) | 2016-06-23 |
| US10084073B2 (en) | 2018-09-25 |
| US20180069107A1 (en) | 2018-03-08 |
| JP2018505549A (ja) | 2018-02-22 |
| CN105789298B (zh) | 2019-06-07 |
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