JP2012064686A - 半導体装置 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 63
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 230000015556 catabolic process Effects 0.000 abstract description 11
- 230000006378 damage Effects 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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Abstract
【解決手段】実施形態によれば、半導体装置は、第1の主電極と、第1の半導体層と、第1導電形ベース層と、第2導電形ベース層と、第1導電形の第2の半導体層と、第2導電形の埋め込み層と、埋め込み電極と、ゲート絶縁膜と、ゲート電極と、第2の主電極とを備えた。埋め込み層は、第1導電形ベース層中に選択的に設けられた。埋め込み電極は、第2導電形ベース層を貫通して埋め込み層に達するトレンチの底部に設けられ、埋め込み層に接する。ゲート絶縁膜は、埋め込み電極より上のトレンチの側壁に設けられた。ゲート電極は、トレンチ内におけるゲート絶縁膜の内側に設けられた。第2の主電極は、第2の半導体層上に設けられ、第2の半導体層及び埋め込み電極と電気的に接続された。
【選択図】図1
Description
図1は、第1実施形態に係る半導体装置の模式断面図である。
図2は、同半導体装置における主な要素の平面レイアウトを例示する模式図である。
図3は、図1におけるA−A断面図である。
図4に示すように、埋め込み電極23は、すべてのトレンチ内に設けなくてもよい。図4では、複数のトレンチを第1のトレンチt1と第2のトレンチt2とに分けて示す。
次に、図5は、第3実施形態に係る半導体装置の模式断面図である。
次に、図7は、第4実施形態に係る半導体装置として、IGBT(Insulated Gate Bipolar Transistor)の模式断面図である。
Claims (8)
- 第1の主電極と、
前記第1の主電極上に設けられた第1の半導体層と、
前記第1の半導体層上に設けられた第1導電形ベース層と、
前記第1導電形ベース層上に設けられた第2導電形ベース層と、
前記第2導電形ベース層上に設けられた第1導電形の第2の半導体層と、
前記第1導電形ベース層中に選択的に設けられた第2導電形の埋め込み層と、
前記第2導電形ベース層を貫通して前記埋め込み層に達するトレンチの底部に設けられ、前記埋め込み層に接する埋め込み電極と、
前記埋め込み電極より上の前記トレンチの側壁に設けられたゲート絶縁膜と、
前記トレンチ内における前記ゲート絶縁膜の内側に設けられたゲート電極と、
前記第2の半導体層上に設けられ、前記第2の半導体層及び前記埋め込み電極と電気的に接続された第2の主電極と、
を備えたことを特徴とする半導体装置。 - 第1の主電極と、
前記第1の主電極上に設けられた第1の半導体層と、
前記第1の半導体層上に設けられた第1導電形ベース層と、
前記第1導電形ベース層上に設けられた第2導電形ベース層と、
前記第2導電形ベース層上に設けられた第1導電形の第2の半導体層と、
前記第2導電形ベース層を貫通して前記第1導電形ベース層に達する第1のトレンチの側壁に設けられたゲート絶縁膜と、
前記第1のトレンチ内における前記ゲート絶縁膜の内側に設けられたゲート電極と、
前記第1導電形ベース層中に選択的に設けられた第2導電形の埋め込み層と、
前記第2導電形ベース層を貫通して前記埋め込み層に達する第2のトレンチ内に設けられ、前記埋め込み層に接する埋め込み電極と、
前記第2の半導体層上に設けられ、前記第2の半導体層及び前記埋め込み電極と電気的に接続された第2の主電極と、
を備えたことを特徴とする半導体装置。 - 前記埋め込み電極は、前記第2のトレンチの底部に設けられ、
前記第2のトレンチ内における前記埋め込み電極の上に、絶縁膜を介して前記ゲート電極と電気的に接続された第2のゲート電極が設けられたことを特徴とする請求項2記載の半導体装置。 - 前記埋め込み電極は、前記第2のトレンチ内を底部から開口部まで充填され、
前記第2の主電極は、前記第2のトレンチの上にも設けられ、前記第2のトレンチ内に充填された前記埋め込み電極の上端に接していることを特徴とする請求項2記載の半導体装置。 - 前記第2導電形ベース層は、前記埋め込み電極の側面に接していることを特徴とする請求項4記載の半導体装置。
- 前記第1の半導体層は、第1導電形のドレイン層であることを特徴とする請求項1〜5のいずれか1つに記載の半導体装置。
- 前記第1の半導体層は、第2導電形のコレクタ層であることを特徴とする請求項1〜6のいずれか1つに記載の半導体装置。
- 前記第2の半導体層は、前記第2導電形ベース層上に前記第2導電形ベース層と同じ幅で重なったストライプ状の平面パターンで設けられたことを特徴とする請求項1〜7のいずれか1つに記載の半導体装置。
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JP2010206379A JP5537359B2 (ja) | 2010-09-15 | 2010-09-15 | 半導体装置 |
CN201110265504.2A CN102403358B (zh) | 2010-09-15 | 2011-09-08 | 半导体装置 |
US13/232,839 US9029918B2 (en) | 2010-09-15 | 2011-09-14 | Semiconductor device |
US14/685,053 US9293548B2 (en) | 2010-09-15 | 2015-04-13 | Semiconductor device |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013243187A (ja) * | 2012-05-18 | 2013-12-05 | Sumitomo Electric Ind Ltd | 半導体装置 |
JP2016523454A (ja) * | 2013-07-03 | 2016-08-08 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | フィールドプレート・トレンチ・fet、及び、半導体構成素子 |
JP2017139415A (ja) * | 2016-02-05 | 2017-08-10 | 株式会社デンソー | 半導体装置 |
CN109427685A (zh) * | 2017-08-24 | 2019-03-05 | 联华电子股份有限公司 | 动态随机存取存储器的埋入式字符线及其制作方法 |
JP2022123036A (ja) * | 2019-04-16 | 2022-08-23 | 富士電機株式会社 | 半導体装置 |
US11682719B2 (en) | 2020-06-10 | 2023-06-20 | Kabushiki Kaisha Toshiba | Vertical insulated gate bipolar transistor (IGBT) with two type control gates |
Families Citing this family (3)
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US8921931B2 (en) * | 2012-06-04 | 2014-12-30 | Infineon Technologies Austria Ag | Semiconductor device with trench structures including a recombination structure and a fill structure |
JP2016174040A (ja) | 2015-03-16 | 2016-09-29 | 株式会社東芝 | 半導体装置 |
CN113658861B (zh) * | 2021-08-19 | 2024-08-30 | 青岛佳恩半导体科技有限公司 | 一种igbt功率器件有源层的制造方法及其结构 |
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JP2013243187A (ja) * | 2012-05-18 | 2013-12-05 | Sumitomo Electric Ind Ltd | 半導体装置 |
JP2016523454A (ja) * | 2013-07-03 | 2016-08-08 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | フィールドプレート・トレンチ・fet、及び、半導体構成素子 |
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CN109427685B (zh) * | 2017-08-24 | 2020-11-10 | 联华电子股份有限公司 | 动态随机存取存储器的埋入式字符线及其制作方法 |
CN109427685A (zh) * | 2017-08-24 | 2019-03-05 | 联华电子股份有限公司 | 动态随机存取存储器的埋入式字符线及其制作方法 |
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JP2022123036A (ja) * | 2019-04-16 | 2022-08-23 | 富士電機株式会社 | 半導体装置 |
JP7405186B2 (ja) | 2019-04-16 | 2023-12-26 | 富士電機株式会社 | 半導体装置 |
US11955540B2 (en) | 2019-04-16 | 2024-04-09 | Fuji Electric Co., Ltd. | Semiconductor device and production method |
US11682719B2 (en) | 2020-06-10 | 2023-06-20 | Kabushiki Kaisha Toshiba | Vertical insulated gate bipolar transistor (IGBT) with two type control gates |
Also Published As
Publication number | Publication date |
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US20120061724A1 (en) | 2012-03-15 |
US20150221736A1 (en) | 2015-08-06 |
US9029918B2 (en) | 2015-05-12 |
CN102403358B (zh) | 2014-11-05 |
US9293548B2 (en) | 2016-03-22 |
CN102403358A (zh) | 2012-04-04 |
JP5537359B2 (ja) | 2014-07-02 |
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