JP5323359B2 - パワーmosデバイス - Google Patents
パワーmosデバイス Download PDFInfo
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- JP5323359B2 JP5323359B2 JP2007555246A JP2007555246A JP5323359B2 JP 5323359 B2 JP5323359 B2 JP 5323359B2 JP 2007555246 A JP2007555246 A JP 2007555246A JP 2007555246 A JP2007555246 A JP 2007555246A JP 5323359 B2 JP5323359 B2 JP 5323359B2
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66727—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the source electrode
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66734—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the gate electrode, e.g. to form a trench gate electrode
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7803—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device
- H01L29/7806—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device the other device being a Schottky barrier diode
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42356—Disposition, e.g. buried gate electrode
- H01L29/4236—Disposition, e.g. buried gate electrode within a trench, e.g. trench gate electrode, groove gate electrode
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
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- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
本発明は、プロセス、装置、システム、合成物、コンピュータ可読記憶媒体又はプログラム命令が光学又は電子通信リンクを介して送信されるコンピュータネットワークなどのコンピュータ可読媒体を含む、多くの手法で実施することができる。本明細書において、これらの実施又は本発明が取り得る他の何らかの形態を技法と呼ぶことができる。一般に、開示されるプロセスのステップの順序は、本発明の範囲内で変更することができる。
Claims (23)
- ドレインと、
該ドレインの上に配置され、ボディ上面を有するボディと、
該ボディ内に埋め込まれ、前記ボディ上面から前記ボディ内に下方に延びるソースと、 該ソース及び前記ボディを貫通して前記ドレイン内に延びるゲートトレンチと、
前記ゲートトレンチ内に配置されたゲートと、
トレンチ壁及び該トレンチ壁に沿って配置され、かつ、前記ソースに接触した突き抜け防止インプラントを有するソースボディコンタクトトレンチと、
を含み、
前記ソースボディコンタクトトレンチがトレンチ底面を有し、前記インプラントが前記トレンチ底面に沿っては配置されていないことを特徴とする半導体デバイス。 - 前記ソースボディコンタクトトレンチが前記ゲートトレンチに近接し且つ前記ソースに隣接している、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ゲートが前記ボディ上面の上に実質的に延びるゲート上面を有する、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチが前記ボディを貫通して前記ドレインに延びる、ことを特徴とする請求項1に記載の半導体デバイス。
- 前記ソースボディコンタクトトレンチ内に配置されるコンタクト電極を更に含む、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチ内に配置されるコンタクト電極を更に含み、前記コンタクト電極が、前記ソース及びボディ領域にオーミックコンタクトを提供するのに好適な金属を含む、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチ内に配置されるコンタクト電極を更に含み、前記コンタクト電極が、前記ソース及びボディ領域にオーミックコンタクトを提供するのに好適な金属を含み、更に前記コンタクト電極が、前記ドレイン領域にショットキーダイオードを形成するのに好適な金属を含む、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチ内に配置されるコンタクト電極を更に含み、前記コンタクト電極及び前記ドレインがショットキーダイオードを形成する、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチ内に配置されるコンタクト電極を更に含み、前記コンタクト電極及び前記ドレインが、前記デバイスのボディダイオードの下に位置するショットキーダイオードを形成する、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチが滑らかな形状を有するように形成される、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記突き抜け防止インプラントがP型材料が高濃度にドープされた領域を含む、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースの深さが0.5μm以下である、
ことを特徴とする請求項1に記載の半導体デバイス。 - 前記ソースボディコンタクトトレンチがプラグを含む、
ことを特徴とする請求項1に記載の半導体デバイス。 - 半導体デバイスを作製する方法であって、
基板上面を有する基板上にハードマスクを形成する段階と、
前記基板内に前記ハードマスクを貫通してゲートトレンチを形成する段階と、
前記ゲートトレンチ内にゲート材料を堆積させる段階と、
前記ハードマスクを除去してゲート構造体を残す段階と、
トレンチ壁を有するソースボディコンタクトトレンチを形成する段階と、
前記トレンチ壁に沿って配置され、かつ、ソースに接触した突き抜け防止インプラントを形成する段階と、
を含むことを特徴とする方法。 - 前記突き抜け防止インプラントが前記トレンチ壁に沿って形成される、
ことを特徴とする請求項14に記載の方法。 - 前記突き抜け防止インプラントを形成する段階が、前記トレンチ壁上にある角度でイオンをインプラントする段階を含む、
ことを特徴とする請求項14に記載の方法。 - 前記突き抜け防止インプラントを形成する段階が、前記トレンチ壁上にある角度でP型イオンをインプラントする段階を含む、
ことを特徴とする請求項14に記載の方法。 - 前記トレンチ内に堆積されるゲート材料の量が前記基板上面を超えて延びており、前記ハードマスクを除去する段階が、前記基板上面の上に実質的に延びるゲート構造体を残す、
ことを特徴とする請求項14に記載の方法。 - 前記ハードマスクがSiO2ハードマスクである、
ことを特徴とする請求項14に記載の方法。 - 前記ソースボディコンタクトトレンチがトレンチ底部を有し、前記方法が更に、前記トレンチ底部内にコンタクト電極を堆積する段階を含む、
ことを特徴とする請求項14に記載の方法。 - 前記ソースボディコンタクトトレンチがトレンチ底部を有し、前記方法が更に、前記トレンチ底部内にコンタクト電極を堆積させてショットキーダイオードを形成する段階を含む、
ことを特徴とする請求項14に記載の方法。 - 前記ソースボディコンタクトトレンチを形成する段階がコンタクトエッチングプロセスを実行する段階を含む、
ことを特徴とする請求項14に記載の方法。 - 前記ソースボディコンタクトトレンチを形成する段階が、第1のコンタクトエッチングプロセスを実行する段階を含み、前記突き抜け防止インプラントを形成する段階が、インプラント材料を注入し、第2のコンタクトエッチングプロセスを実行する段階を含む、
ことを特徴とする請求項14に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/056,346 | 2005-02-11 | ||
US11/056,346 US7285822B2 (en) | 2005-02-11 | 2005-02-11 | Power MOS device |
PCT/US2006/004739 WO2006086636A2 (en) | 2005-02-11 | 2006-02-10 | Power mos device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008530800A JP2008530800A (ja) | 2008-08-07 |
JP5323359B2 true JP5323359B2 (ja) | 2013-10-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2007555246A Active JP5323359B2 (ja) | 2005-02-11 | 2006-02-10 | パワーmosデバイス |
Country Status (7)
Country | Link |
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US (6) | US7285822B2 (ja) |
EP (1) | EP1856743A4 (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10388774B2 (en) | 2017-12-04 | 2019-08-20 | Kabushiki Kaisha Toshiba | Semiconductor device |
Also Published As
Publication number | Publication date |
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US20110207276A1 (en) | 2011-08-25 |
CN101107718B (zh) | 2012-03-28 |
US7285822B2 (en) | 2007-10-23 |
JP2008530800A (ja) | 2008-08-07 |
TW200633208A (en) | 2006-09-16 |
US20120329225A1 (en) | 2012-12-27 |
US8597998B2 (en) | 2013-12-03 |
TWI318454B (en) | 2009-12-11 |
US7923774B2 (en) | 2011-04-12 |
WO2006086636A3 (en) | 2007-03-01 |
EP1856743A2 (en) | 2007-11-21 |
US7800169B2 (en) | 2010-09-21 |
US7605425B2 (en) | 2009-10-20 |
US20060180855A1 (en) | 2006-08-17 |
CN101107718A (zh) | 2008-01-16 |
EP1856743A4 (en) | 2009-05-27 |
WO2006086636A2 (en) | 2006-08-17 |
US20080001219A1 (en) | 2008-01-03 |
KR20070104578A (ko) | 2007-10-26 |
US8288229B2 (en) | 2012-10-16 |
US20080001220A1 (en) | 2008-01-03 |
KR100904378B1 (ko) | 2009-06-25 |
US20090224316A1 (en) | 2009-09-10 |
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