JPWO2015008444A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JPWO2015008444A1 JPWO2015008444A1 JP2015527162A JP2015527162A JPWO2015008444A1 JP WO2015008444 A1 JPWO2015008444 A1 JP WO2015008444A1 JP 2015527162 A JP2015527162 A JP 2015527162A JP 2015527162 A JP2015527162 A JP 2015527162A JP WO2015008444 A1 JPWO2015008444 A1 JP WO2015008444A1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 113
- 239000012535 impurity Substances 0.000 claims abstract description 154
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 127
- 229920005591 polysilicon Polymers 0.000 claims abstract description 127
- 238000009792 diffusion process Methods 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 45
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000010703 silicon Substances 0.000 claims abstract description 31
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- 238000007792 addition Methods 0.000 description 2
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
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- 239000010937 tungsten Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
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Abstract
Description
以下、第1の実施形態に係る半導体装置について、図1〜6を参照しながら説明する。本実施形態では、Nチャネル型の縦型ゲート半導体装置により本開示を具体化している。本実施形態では、第1導電型がN型であり、第2導電型がP型である。なお、Pチャネル型の縦型ゲート半導体装置に対しても、素子内の各不純物領域の導電型を反対にすることで、以下の説明が同様に適用できる。
以下、第1の実施形態に係る半導体装置の製造方法について、図3、4を参照しながら説明する。ここで、図3、図4は、上記構造を有する縦型ゲート半導体装置の形成過程を示す工程断面図である。図2と同様に、図3、図4は概略図であり、各部の寸法比は必ずしも現実の寸法比を示すものではない。
以下、第2の実施形態に係る半導体装置について、図7を参照しながら説明する。本実施形態では、NPN型の縦型バイポーラ半導体装置により本開示を具体化している。本実施形態では、第1導電型がN型であり、第2導電型がP型である。なお、PNP型の縦型トランジスタ半導体装置に対しても、素子内の各不純物領域の導電型を反対にすることで、以下の説明が同様に適用できる。
以下、第3の実施形態に係る半導体装置について、図8を参照しながら説明する。本実施形態では、PN型の縦型ダイオード半導体装置により本開示を具体化している。本実施形態では、第1導電型がN型であり、第2導電型がP型である。なお、NP型の縦型ダイオード半導体装置に対しても、素子内の各不純物領域の導電型を反対にすることで、以下の説明が同様に適用できる。
以下、第4の実施形態に係る半導体装置について、図9、図10を参照しながら説明する。図9は、本実施形態の縦型ゲート半導体装置を示す断面図である。
以下、第5の実施形態に係る半導体装置について、図11〜13を参照しながら説明する。図11は、本開示の縦型ゲート半導体装置を示す断面図である。
次いで、第5の実施形態に係る半導体装置の製造方法について、図12〜13を参照しながら説明する。
以下、第6の実施形態に係る半導体装置について、図14を参照しながら説明する。14は、本開示の縦型バイポーラ半導体装置を示す断面図である。
以下、第7の実施形態に係る半導体装置について、図15を参照しながら説明する。図15は、本開示の縦型ダイオード半導体装置を示す断面図である。
以下、第8の実施形態にかかる半導体装置について、図16を参照しながら説明する。図16は、本開示の縦型ゲート半導体装置を示す平面図である。
4 第1導電型不純物の高濃度層
6 第1導電型不純物の低濃度層
8 シリコン酸化膜
10 第1のトレンチ部
12 第1のトレンチ
14 第1導電型不純物の拡散層
16 第1のポリシリコン
18 シリコン酸化膜
20 第2のトレンチ部
22 第2のトレンチ
24 ゲート絶縁膜
26 第2のポリシリコン
28 ボディー領域
30 ソース領域
32 層間絶縁膜
34 第1の電極
36 第2の電極
38 第3の電極
40 ベース領域
42 エミッタ領域
44 アノード領域
46 第3のトレンチ
48 第3のポリシリコン
50 第3のトレンチ部
52 レジストパターン
54 ソース絶縁膜
56 第4のポリシリコン
58 第5のポリシリコン
60 アノード絶縁膜
62 ショットキー金属
Claims (11)
- 第1導電型不純物を含む高濃度層を有するシリコン基板と、
前記高濃度層の上に形成された、前記高濃度層よりも濃度が低い第1導電型不純物を含む低濃度層と、
前記低濃度層の上に形成された第1の電極及び第2の電極と、
前記第2の電極と前記高濃度層との間に電流を流す縦型半導体素子と、
前記第1の電極と前記高濃度層との間を電気的に導通させる第1のトレンチ部とを有し、
前記第1のトレンチ部は、第1導電型の不純物を含む第1のポリシリコンと、平面視で前記第1のポリシリコンを囲むように形成された第1導電型不純物を含む拡散層とを有し、
前記第1のポリシリコンは、前記低濃度層上面から該低濃度層を貫通して前記高濃度層に達するように形成され、前記第1のポリシリコンと前記拡散層の各々の第1導電型不純物濃度は、前記低濃度層から前記高濃度層に至る方向において一定である
ことを特徴とする半導体装置。 - 前記第1のトレンチ部は第1の電極の下方に形成される請求項1記載の半導体装置。
- 前記縦型半導体素子は、
第1導電型不純物を含む第2のポリシリコンが埋め込まれた第2のトレンチ部を有する請求項2記載の半導体装置。 - 前記拡散層は、前記第2のポリシリコンと同じ深さまで埋め込まれた、第1導電型不純物を含む第3のポリシリコンを有する請求項3記載の半導体装置。
- 前記縦型半導体素子は、
前記低濃度層の上面部に形成された第2導電型不純物を含むボディ層と、前記ボディ層の上に形成された第1導電型不純物を含むソース層と、前記低濃度層の上に形成された第3の電極とを有し、
前記ソース層は前記第2の電極に電気的に接続され、
前記第2のポリシリコンは前記第3の電極に電気的に接続され、
前記第1、第2、第3の電極がそれぞれドレイン、ソース、ゲート電極として動作する電界効果型トランジスタである請求項3または4記載の半導体装置。 - 前記第2のポリシリコンは、
第5のポリシリコンと、前記第5のポリシリコンの上に形成された絶縁層と、前記絶縁層の上方に形成された第4のポリシリコンとを有し、
前記第5のポリシリコンは前記第2の電極に接続され、
前記第4のポリシリコンは前記第3の電極に接続されている請求項5記載の半導体装置。 - 前記縦型半導体素子は、
前記低濃度層の上面部に形成された第2導電型不純物を含むベース層と、前記ベース層の上に形成された第1導電型不純物を含むエミッタ層と、前記低濃度層の上に形成された第3の電極とを有し、
前記エミッタ層は第2の電極に電気的に接続され、
前記ベース層は前記第3の電極に電気的に接続され、
前記第1、第2、第3の電極がそれぞれコレクタ、エミッタ、ベース電極として動作するバイポーラトランジスタである請求項2記載の半導体装置。 - 前記縦型半導体素子は、
前記低濃度層の上面部に形成された第2導電型不純物を含むベース層と、前記ベース層の上に形成された第1導電型不純物を含むエミッタ層と、前記低濃度層の上に形成された第3の電極とを有し、
前記第2のポリシリコンは前記エミッタ層に埋め込まれて形成され、かつ前記第2の電極に電気的に接続され、
前記ベース層は前記第3の電極に電気的に接続され、
前記第1、第2、第3の電極がそれぞれコレクタ、エミッタ、ベース電極として動作するバイポーラトランジスタである
請求項3または4に記載の半導体装置。 - 前記縦型半導体素子は、
前記第2の電極に電気的に接続され、かつ前記低濃度層の上面部に形成された第2導電型不純物を含むアノード層を有し、
前記第1、第2の電極がそれぞれカソード、アノード電極として動作する接合型ダイオードである請求項2記載の半導体装置。 - 前記縦型半導体素子は、
前記第2の電極に電気的に接続され、かつ前記低濃度層の上に形成された金属層を有し、
前記第1、第2の電極がそれぞれカソード、アノード電極として動作するショットキーバリアダイオードである請求項2記載の半導体装置。 - 前記縦型半導体素子は、
前記第2の電極に電気的に接続され、かつ前記低濃度層の上に形成された金属層を有し、
前記第2のポリシリコンは、
前記低濃度層の上面部に該低濃度層と絶縁して形成され、かつ前記第2の電極に電気的に接続され、
前記第1、第2の電極がそれぞれカソード、アノード電極として動作するショットキーバリアダイオードである
請求項3または4に記載の半導体装置。
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Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195968A (ja) * | 1984-03-19 | 1985-10-04 | Hitachi Ltd | 半導体装置 |
JPH04269835A (ja) * | 1991-02-25 | 1992-09-25 | Nippon Telegr & Teleph Corp <Ntt> | トレンチ形電極を有する半導体装置の製造方法 |
JPH10284731A (ja) * | 1997-03-28 | 1998-10-23 | St Microelectron Inc | ショットキーダイオード本体構成体を有するdmosトランジスタ |
US20070018195A1 (en) * | 2005-06-29 | 2007-01-25 | Walter Hartner | Semiconductor structure and method |
JP2008034572A (ja) * | 2006-07-28 | 2008-02-14 | Matsushita Electric Ind Co Ltd | 半導体装置とその製造方法 |
JP2009004398A (ja) * | 2007-06-19 | 2009-01-08 | Renesas Technology Corp | 半導体装置およびこれを用いた電力変換装置 |
JP2009164584A (ja) * | 2007-12-28 | 2009-07-23 | Dongbu Hitek Co Ltd | 半導体素子のショットキーダイオード及びその製造方法 |
JP2011514675A (ja) * | 2008-02-27 | 2011-05-06 | アドバンスト・アナロジック・テクノロジーズ・インコーポレイテッド | 半導体ダイのための分離されたトランジスタおよびダイオードならびに分離および終端構造 |
US20120007216A1 (en) * | 2010-07-12 | 2012-01-12 | Supertex, Inc. | Multi-Chip Package Module And A Doped Polysilicon Trench For Isolation And Connection |
JP2012204564A (ja) * | 2011-03-25 | 2012-10-22 | Toshiba Corp | 半導体素子及び半導体素子の製造方法 |
JP2013125827A (ja) * | 2011-12-14 | 2013-06-24 | Toshiba Corp | 半導体装置およびその製造方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02244634A (ja) * | 1989-03-16 | 1990-09-28 | Oki Electric Ind Co Ltd | 半導体装置の製造方法 |
JPH0529603A (ja) | 1991-07-19 | 1993-02-05 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH05166823A (ja) * | 1991-12-16 | 1993-07-02 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH07326742A (ja) * | 1994-05-30 | 1995-12-12 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2006066788A (ja) * | 2004-08-30 | 2006-03-09 | Mitsubishi Electric Corp | 半導体装置 |
EP1643558B1 (en) * | 2004-09-30 | 2012-05-02 | STMicroelectronics Srl | Vertical power semiconductor device and method of making the same |
US7615847B2 (en) * | 2007-03-23 | 2009-11-10 | Infineon Technologies Austria Ag | Method for producing a semiconductor component |
JP5132977B2 (ja) | 2007-04-26 | 2013-01-30 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
DE102008046388A1 (de) * | 2008-09-09 | 2010-03-18 | Infineon Technologies Ag | Vertikaler Bipolartransistor |
US7960754B2 (en) * | 2009-03-10 | 2011-06-14 | Micrel, Inc. | Diode having high breakdown voltage and low on-resistance |
US8501580B2 (en) * | 2010-02-26 | 2013-08-06 | Jerry Hu | Process of fabricating semiconductor device with low capacitance for high-frequency circuit protection |
TWI441261B (zh) * | 2011-05-13 | 2014-06-11 | Anpec Electronics Corp | 半導體功率元件的製作方法 |
US9312335B2 (en) * | 2011-09-23 | 2016-04-12 | Alpha And Omega Semiconductor Incorporated | Lateral PNP bipolar transistor with narrow trench emitter |
US9401355B2 (en) * | 2011-12-16 | 2016-07-26 | Infineon Technologies Ag | Semiconductor device including a diode arranged in a trench |
-
2014
- 2014-07-02 WO PCT/JP2014/003528 patent/WO2015008444A1/ja active Application Filing
- 2014-07-02 JP JP2015527162A patent/JP6295444B2/ja active Active
- 2014-07-02 CN CN201480040051.5A patent/CN105409006B/zh active Active
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-
2015
- 2015-12-20 US US14/975,825 patent/US9570544B2/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195968A (ja) * | 1984-03-19 | 1985-10-04 | Hitachi Ltd | 半導体装置 |
JPH04269835A (ja) * | 1991-02-25 | 1992-09-25 | Nippon Telegr & Teleph Corp <Ntt> | トレンチ形電極を有する半導体装置の製造方法 |
JPH10284731A (ja) * | 1997-03-28 | 1998-10-23 | St Microelectron Inc | ショットキーダイオード本体構成体を有するdmosトランジスタ |
US20070018195A1 (en) * | 2005-06-29 | 2007-01-25 | Walter Hartner | Semiconductor structure and method |
JP2008034572A (ja) * | 2006-07-28 | 2008-02-14 | Matsushita Electric Ind Co Ltd | 半導体装置とその製造方法 |
JP2009004398A (ja) * | 2007-06-19 | 2009-01-08 | Renesas Technology Corp | 半導体装置およびこれを用いた電力変換装置 |
JP2009164584A (ja) * | 2007-12-28 | 2009-07-23 | Dongbu Hitek Co Ltd | 半導体素子のショットキーダイオード及びその製造方法 |
JP2011514675A (ja) * | 2008-02-27 | 2011-05-06 | アドバンスト・アナロジック・テクノロジーズ・インコーポレイテッド | 半導体ダイのための分離されたトランジスタおよびダイオードならびに分離および終端構造 |
US20120007216A1 (en) * | 2010-07-12 | 2012-01-12 | Supertex, Inc. | Multi-Chip Package Module And A Doped Polysilicon Trench For Isolation And Connection |
JP2012204564A (ja) * | 2011-03-25 | 2012-10-22 | Toshiba Corp | 半導体素子及び半導体素子の製造方法 |
JP2013125827A (ja) * | 2011-12-14 | 2013-06-24 | Toshiba Corp | 半導体装置およびその製造方法 |
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