JP6947915B6 - Igbtパワーデバイス - Google Patents
Igbtパワーデバイス Download PDFInfo
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- 210000000746 body region Anatomy 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 42
- 229910052751 metal Inorganic materials 0.000 claims description 42
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 112
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 18
- 229920005591 polysilicon Polymers 0.000 description 18
- 238000010586 diagram Methods 0.000 description 16
- 238000011084 recovery Methods 0.000 description 16
- 239000011229 interlayer Substances 0.000 description 6
- 239000000969 carrier Substances 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 5
- 239000005368 silicate glass Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000000694 effects Effects 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- H01L29/42356—Disposition, e.g. buried gate electrode
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- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
- H01L29/7397—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions and a gate structure lying on a slanted or vertical surface or formed in a groove, e.g. trench gate IGBT
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
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Description
図2は、一実施例に係るIGBTパワーデバイスの等価回路模式図である。
図3は、一実施例に係る他のIGBTパワーデバイスの等価回路模式である。
図4は、一実施例に係る他のIGBTパワーデバイスの等価回路模式図である。
図5は、一実施例に係るIGBTパワーデバイスの断面構造模式図である。
図6は、一実施例に係る他のIGBTパワーデバイスの断面構造模式図である。
図7は、一実施例に係る他のIGBTパワーデバイスの断面構造模式図である。
図8は、一実施例に係る他のIGBTパワーデバイスの断面構造模式図である。
図9は、一実施例に係る他のIGBTパワーデバイスの断面構造模式図である。
Claims (12)
- 絶縁ゲートバイポーラトランジスタIGBTパワーデバイスであって、
バイポーラトランジスタと、第1の金属酸化物半導体MOSトランジスタと、第2のMOSトランジスタと、ボディダイオードと、ボディコンタクトダイオードとを含み、前記ボディコンタクトダイオードの陽極は前記ボディダイオードの陽極に接続され、
前記第1のMOSトランジスタのドレインは前記バイポーラトランジスタのベースに接続され、前記第2のMOSトランジスタのドレイン、前記ボディダイオードの陰極及び前記バイポーラトランジスタのエミッタの間は互いに接続され、且ついずれも前記IGBTパワーデバイスのコレクタ電圧に接続され、
前記第1のMOSトランジスタの第1のゲートは前記IGBTパワーデバイスのゲート電圧に外部接続され、
前記バイポーラトランジスタのコレクタ、前記第1のMOSトランジスタのソース、前記第2のMOSトランジスタのソース、前記第2のMOSトランジスタの第2のゲート及び前記ボディコンタクトダイオードの陰極の間は互いに接続され、且ついずれも前記IGBTパワーデバイスのエミッタ電圧に接続されている、絶縁ゲートバイポーラトランジスタIGBTパワーデバイス。 - 前記バイポーラトランジスタのコレクタは、更に前記ボディダイオードの陽極に接続されている、請求項1に記載のIGBTパワーデバイス。
- 前記第1のMOSトランジスタの閾値電圧は、前記第2のMOSトランジスタの閾値電圧よりも大きい、請求項1に記載のIGBTパワーデバイス。
- 間隔を空けて設けられたp型コレクタ領域とn型コレクタ領域であって、いずれもコレクタ電圧に接続されているp型コレクタ領域とn型コレクタ領域と、
前記p型コレクタ領域と前記n型コレクタ領域の上に位置するn型フィールドストップ領域と、前記n型フィールドストップ領域の上に位置するn型ドリフト領域と、前記n型ドリフト領域内に位置する少なくとも2つの順に配列されるp型ボディ領域と、前記p型ボディ領域内に位置する第1のn型ソース領域、第2のn型ソース領域、p型ボディコンタクト領域と、
前記p型ボディコンタクト領域の上に位置する導電層であって、前記導電層と前記p型ボディコンタクト領域とがボディコンタクトダイオード構造を形成し、前記導電層は、該ボディコンタクトダイオードの陰極であり、前記p型ボディコンタクト領域は、該ボディコンタクトダイオードの陽極である導電層と、
前記p型ボディ領域内に位置し、且つ前記第1のn型ソース領域と前記n型ドリフト領域との間に介在する第1の電流チャネルと、前記第1の電流チャネルを被覆するゲート誘電体層と第1のゲートであって、前記第1のゲートはゲート電圧に外部接続されているゲート誘電体層と第1のゲートと、
前記p型ボディ領域内に位置し、且つ前記第2のn型ソース領域と前記n型ドリフト領域との間に介在する第2の電流チャネルと、前記第2の電流チャネルを被覆するゲート誘電体層と第2のゲートであって、前記第2のゲート、第1のn型ソース領域、第2のn型ソース領域及び導電層の間は互いに電気的に接続され、且ついずれもエミッタ電圧に接続されているゲート誘電体層と第2のゲートとを含む、絶縁ゲートバイポーラトランジスタIGBTパワーデバイス。 - 前記導電層は、前記p型ボディ領域の上に位置するエミッタ金属コンタクト層であり、前記p型ボディコンタクト領域のドーピング濃度は、前記p型ボディ領域のドーピング濃度の最大ピークよりも低く、前記p型ボディコンタクト領域と前記エミッタ金属コンタクト層とは、ショットキーバリアダイオード構造を形成する、請求項4に記載のIGBTパワーデバイス。
- 前記第2のゲート、前記第1のn型ソース領域及び前記第2のn型ソース領域は、いずれも前記エミッタ金属コンタクト層によってエミッタ電圧に外部接続されている、請求項5に記載のIGBTパワーデバイス。
- 前記導電層は、前記p型ボディ領域内に位置するn型ドープ領域であり、前記n型ドープ領域と前記p型ボディコンタクト領域とは、シリコンベースのボディコンタクトダイオード構造を形成する、請求項4に記載のIGBTパワーデバイス。
- 前記n型ドープ領域、前記第2のゲート、前記第1のn型ソース領域及び前記第2のn型ソース領域は、いずれもエミッタ金属コンタクト層によってエミッタ電圧に外部接続されている、請求項7に記載のIGBTパワーデバイス。
- 前記第1の電流チャネルのオン電圧は、前記第2の電流チャネルのオン電圧よりも大きい、請求項4に記載のIGBTパワーデバイス。
- ゲートトレンチを更に含み、前記ゲートトレンチは、隣接する2つの前記p型ボディ領域の間に位置し、且つ前記n型ドリフト領域内に凹んでおり、前記ゲート誘電体層、前記第1のゲート及び前記第2のゲートは、いずれも前記ゲートトレンチ内に設けられている、請求項4に記載のIGBTパワーデバイス。
- 前記n型ドリフト領域に凹んでいるシールドゲートトレンチを更に含み、前記シールドゲートトレンチの開口は、前記ゲートトレンチの底部に位置し、前記シールドゲートトレンチ内に第3のゲートが設けられ、前記第3のゲートは、絶縁誘電体層によって前記n型ドリフト領域と、前記第1のゲートと、前記第2のゲートとから分離され、前記第3のゲート、前記第1のn型ソース領域、前記第2のn型ソース領域、前記第2のゲート及び前記導電層の間は互いに電気的に接続され、且ついずれもエミッタ電圧に接続されている、請求項10に記載のIGBTパワーデバイス。
- 前記第3のゲートは、上方へ前記ゲートトレンチ内に延在している、請求項11に記載のIGBTパワーデバイス。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711058074.0A CN109755304B (zh) | 2017-11-01 | 2017-11-01 | 一种分栅igbt功率器件 |
CN201711058787.7 | 2017-11-01 | ||
CN201711058063.2A CN109755303B (zh) | 2017-11-01 | 2017-11-01 | 一种igbt功率器件 |
CN201711058074.0 | 2017-11-01 | ||
CN201711058063.2 | 2017-11-01 | ||
CN201711058787.7A CN109755298B (zh) | 2017-11-01 | 2017-11-01 | 一种沟槽型igbt功率器件 |
PCT/CN2018/112338 WO2019085850A1 (zh) | 2017-11-01 | 2018-10-29 | Igbt功率器件 |
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JP2020532109A JP2020532109A (ja) | 2020-11-05 |
JP6947915B2 JP6947915B2 (ja) | 2021-10-13 |
JP6947915B6 true JP6947915B6 (ja) | 2021-11-10 |
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CN113421922B (zh) * | 2021-06-25 | 2022-05-13 | 电子科技大学 | 一种具备栅极自钳位功能的三维igbt及其制造方法 |
CN116264244A (zh) | 2021-12-15 | 2023-06-16 | 苏州东微半导体股份有限公司 | Igbt器件 |
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JP4437655B2 (ja) | 2003-10-02 | 2010-03-24 | 三菱電機株式会社 | 半導体装置及び半導体装置の駆動回路 |
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JP2012099630A (ja) * | 2010-11-02 | 2012-05-24 | Panasonic Corp | 半導体装置および電力変換器 |
CN102945804B (zh) | 2012-12-07 | 2015-04-15 | 株洲南车时代电气股份有限公司 | 一种沟槽栅型igbt芯片制作方法 |
US9240450B2 (en) * | 2014-02-12 | 2016-01-19 | Infineon Technologies Ag | IGBT with emitter electrode electrically connected with impurity zone |
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US9799763B2 (en) * | 2015-08-31 | 2017-10-24 | Intersil Americas LLC | Method and structure for reducing switching power losses |
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