JP4511118B2 - 縦形の金属/酸化物/シリコン型電界効果ダイオード - Google Patents
縦形の金属/酸化物/シリコン型電界効果ダイオード Download PDFInfo
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- JP4511118B2 JP4511118B2 JP2002592200A JP2002592200A JP4511118B2 JP 4511118 B2 JP4511118 B2 JP 4511118B2 JP 2002592200 A JP2002592200 A JP 2002592200A JP 2002592200 A JP2002592200 A JP 2002592200A JP 4511118 B2 JP4511118 B2 JP 4511118B2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/63—Vertical IGFETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D48/00—Individual devices not covered by groups H10D1/00 - H10D44/00
- H10D48/01—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/201—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of only components covered by H10D1/00 or H10D8/00, e.g. RLC circuits
- H10D84/204—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of only components covered by H10D1/00 or H10D8/00, e.g. RLC circuits of combinations of diodes or capacitors or resistors
- H10D84/221—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of only components covered by H10D1/00 or H10D8/00, e.g. RLC circuits of combinations of diodes or capacitors or resistors of only diodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/028—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs
- H10D30/0291—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of vertical DMOS [VDMOS] FETs
- H10D30/0297—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of vertical DMOS [VDMOS] FETs using recessing of the gate electrodes, e.g. to form trench gate electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
- H10D30/668—Vertical DMOS [VDMOS] FETs having trench gate electrodes, e.g. UMOS transistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
- H10D62/107—Buried supplementary regions, e.g. buried guard rings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
- H10D64/27—Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates
- H10D64/311—Gate electrodes for field-effect devices
Landscapes
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Semiconductor Integrated Circuits (AREA)
- Semiconductor Memories (AREA)
- Furan Compounds (AREA)
- Thin Film Transistor (AREA)
Description
Claims (2)
- 1)第1導電型の半導体ボディを準備する工程であって、前記半導体ボディが第1表面上に第2導電型の層を有する工程と、
2)前記第2導電型層上に複数のシリンドリカル酸化物台を形成する工程と、
3)方向性エッチングを行って、各台間の前記第2導電型層中にトレンチを形成する工程と、
4)各台間の前記第2導電型層中に第1導電型の領域を形成する工程であって、前記第1導電型の領域が前記台の下方にいくらか延びている、工程と、
5)方向性エッチングを行って、各台間の前記半導体ボディにまで延びるより深いトレンチを形成し、各台間の前記第2導電型層中の前記第1導電型の領域を除去し、前記第1導電型の領域のうち前記台の下方にいくらか延びた部分は除去しない、工程と、
6)ゲート酸化物を共形的に堆積する工程と、
7)高ドープのポリ半導体層を共形的に堆積する工程と、
8)前記ポリ半導体層に対して方向性エッチングを行って、各台間の前記ゲート酸化物および前記台の上部から前記ポリ半導体層を除去する工程と、
9)注入を行って、各台間の前記半導体ボディの前記表面を第1導電型から第2導電型へ変換する工程と、
10)方向性エッチングを行って、前記台の側壁上の前記ゲート酸化物上にあるポリ半導体層の高さをさらに減じて、前記第1導電型の領域の部分を露出する高さにする工程と、
11)露出した前記ゲート酸化物を除去する工程と、
12)ダイオードに対する第1電気コンタクトとして、前記台の上部と、前記第1導電型の領域の前記露出部分と、前記ポリ半導体層とそして台間の前記第2導電型表面と接触するように、導電層を共形的に堆積する工程と、
13)ダイオードに対する第2電気コンタクトとして、前記半導体ボディの第2表面に対する電気的コンタクトを形成する工程と
を含むダイオード形成方法。 - 第1導電型の半導体ボディと、
前記半導体ボディ上の第1表面上の複数のシリンドリカル台であって、各台は第1導電型の下部領域および第2導電型の上部領域を有し、前記下部領域と前記上部領域の間にpn接合が形成され、前記下部領域および前記上部領域は各台の側壁を決めているシリンドリカル台と、
前記pn接合に隣接する各台の上部領域の周辺にある第1導電型の領域と、
前記下部領域から各台の前記上部領域の前記側壁の周辺にある前記第1導電型領域に延びる、各台の前記側壁上のゲート酸化物であって、各台の前記上部領域の周辺にある前記第1導電型領域の部分が前記ゲート酸化物によって覆われてはいないゲート酸化物と、
前記ゲート酸化物を覆う導電性ゲートと、
各台間の前記半導体ボディの前記表面上の第2導電型層と、
前記導電性ゲートと、各台の前記上部領域の周辺にある前記第1導電型領域と、そして台間の前記半導体ボディの前記表面上の前記第2導電型層と電気コンタクトをなし、前記複数のシリンドリカル台を覆う導電層と、そして
前記半導体ボディの第2表面に対して電気コンタクトをなす導電層と
を備えたダイオード。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/864,436 US6537921B2 (en) | 2001-05-23 | 2001-05-23 | Vertical metal oxide silicon field effect semiconductor diodes |
| PCT/US2002/014848 WO2002095835A2 (en) | 2001-05-23 | 2002-05-08 | Vertical metal oxide semiconductor field-effect diodes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004531065A JP2004531065A (ja) | 2004-10-07 |
| JP2004531065A5 JP2004531065A5 (ja) | 2005-12-22 |
| JP4511118B2 true JP4511118B2 (ja) | 2010-07-28 |
Family
ID=25343277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002592200A Expired - Fee Related JP4511118B2 (ja) | 2001-05-23 | 2002-05-08 | 縦形の金属/酸化物/シリコン型電界効果ダイオード |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US6537921B2 (ja) |
| EP (2) | EP1393382B1 (ja) |
| JP (1) | JP4511118B2 (ja) |
| KR (1) | KR100883873B1 (ja) |
| CN (1) | CN1309092C (ja) |
| AT (1) | ATE516596T1 (ja) |
| AU (1) | AU2002305526B8 (ja) |
| BR (1) | BR0209916A (ja) |
| CA (1) | CA2447722A1 (ja) |
| IL (2) | IL158845A0 (ja) |
| TW (1) | TW558839B (ja) |
| WO (1) | WO2002095835A2 (ja) |
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-
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- 2001-05-23 US US09/864,436 patent/US6537921B2/en not_active Expired - Fee Related
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- 2002-05-08 EP EP02734352A patent/EP1393382B1/en not_active Expired - Lifetime
- 2002-05-08 KR KR1020037015308A patent/KR100883873B1/ko not_active Expired - Fee Related
- 2002-05-08 AU AU2002305526A patent/AU2002305526B8/en not_active Ceased
- 2002-05-08 EP EP10182553A patent/EP2273554A1/en not_active Withdrawn
- 2002-05-08 CA CA002447722A patent/CA2447722A1/en not_active Abandoned
- 2002-05-08 BR BR0209916-0A patent/BR0209916A/pt not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| IL158845A (en) | 2007-12-03 |
| AU2002305526B2 (en) | 2006-10-12 |
| AU2002305526A1 (en) | 2002-12-03 |
| EP1393382A2 (en) | 2004-03-03 |
| KR20040005982A (ko) | 2004-01-16 |
| IL158845A0 (en) | 2004-05-12 |
| US6537921B2 (en) | 2003-03-25 |
| CN1309092C (zh) | 2007-04-04 |
| CA2447722A1 (en) | 2002-11-28 |
| EP1393382B1 (en) | 2011-07-13 |
| TW558839B (en) | 2003-10-21 |
| AU2002305526B8 (en) | 2007-02-15 |
| ATE516596T1 (de) | 2011-07-15 |
| KR100883873B1 (ko) | 2009-02-17 |
| CN1545736A (zh) | 2004-11-10 |
| US20020177324A1 (en) | 2002-11-28 |
| WO2002095835A3 (en) | 2003-07-31 |
| BR0209916A (pt) | 2004-08-31 |
| WO2002095835A2 (en) | 2002-11-28 |
| EP2273554A1 (en) | 2011-01-12 |
| JP2004531065A (ja) | 2004-10-07 |
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