JP2005033165A - 半導体素子のトレンチ形成方法 - Google Patents
半導体素子のトレンチ形成方法 Download PDFInfo
- Publication number
- JP2005033165A JP2005033165A JP2003424484A JP2003424484A JP2005033165A JP 2005033165 A JP2005033165 A JP 2005033165A JP 2003424484 A JP2003424484 A JP 2003424484A JP 2003424484 A JP2003424484 A JP 2003424484A JP 2005033165 A JP2005033165 A JP 2005033165A
- Authority
- JP
- Japan
- Prior art keywords
- trench
- ion implantation
- forming
- semiconductor substrate
- etching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 86
- 239000004065 semiconductor Substances 0.000 title claims abstract description 59
- 238000005530 etching Methods 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 150000002500 ions Chemical class 0.000 claims abstract description 18
- 230000007547 defect Effects 0.000 claims abstract description 16
- 238000000151 deposition Methods 0.000 claims abstract description 7
- 238000000059 patterning Methods 0.000 claims abstract description 6
- 238000005468 ion implantation Methods 0.000 claims description 35
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 4
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- 229910052743 krypton Inorganic materials 0.000 claims 2
- 229910052754 neon Inorganic materials 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 150000004767 nitrides Chemical class 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- 238000001312 dry etching Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
- H01L21/3083—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/3086—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76237—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials introducing impurities in trench side or bottom walls, e.g. for forming channel stoppers or alter isolation behavior
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Element Separation (AREA)
- Drying Of Semiconductors (AREA)
Abstract
【解決手段】半導体基板上に第1及び第2パッド膜を蒸着する段階と、前記第1及び第2パッド膜をパターニングして前記半導体基板を露出させる段階と、露出される前記半導体基板にイオン注入工程を行って、前記イオン注入工程によってイオンが注入された前記半導体基板の領域に格子欠陥を誘発させる段階と、トレンチエッチングマスクを用いたエッチング工程を行って、前記段階で格子欠陥が誘発された前記半導体基板の領域を、格子欠陥が誘発されていない地域より速くエッチングしてトレンチを形成する段階とを含む。
【選択図】図6
Description
12 パッド酸化膜
14 パッド窒化膜
16 キャッピング層
18 フォトレジストパターン
20 スペーサー
24 トレンチ
Claims (11)
- (a)半導体基板上に第1及び第2パッド膜を蒸着する段階と、
(b)前記第1及び第2パッド膜をパターニングして前記半導体基板を露出させる段階と、
(c)露出される前記半導体基板にイオン注入工程を行って、前記イオン注入工程によってイオンが注入された前記半導体基板の領域に格子欠陥を誘発させる段階と、
(d)トレンチエッチングマスクを用いたエッチング工程を行って、前記(c)段階で格子欠陥が誘発された前記半導体基板の領域を、格子欠陥が誘発されていない地域より速くエッチングしてトレンチを形成する段階とを含む半導体素子のトレンチ形成方法。 - 前記イオン注入工程は周期律表の不活性気体を用いることを特徴とする請求項1記載の半導体素子のトレンチ形成方法。
- 前記不活性気体はHe、Ne、Ar、Kr及びXeのいずれか一つであることを特徴とする請求項2記載の半導体素子のトレンチ形成方法。
- (a)半導体基板上に第1及び第2パッド膜を蒸着する段階と、
(b)前記第1及び第2パッド膜をパターニングする段階と、
(c)パターニングされる前記第1及び第2パッド膜の内側壁にスペーサーを形成する段階と、
(d)前記スペーサーの間を介して露出される前記半導体基板に第1イオン注入工程を行う段階と、
(e)エッチング工程を行って前記スペーサーの厚さを減少させ、後続の工程によって形成されるべきトレンチの線幅を増加させる段階と、
(f)前記半導体基板に第2イオン注入工程を行う段階と、
(g)前記第1及び第2イオン注入工程によって格子欠陥が誘発された前記半導体基板の領域をエッチングしてトレンチを形成する段階とを含む半導体素子のトレンチ形成方法。 - 前記第1及び第2イオン注入工程は周期律表の不活性気体を用いることを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
- 前記不活性気体はHe、Ne、Ar、Kr及びXeのいずれか一つであることを特徴とする請求項5記載の半導体素子のトレンチ形成方法。
- 前記第1イオン注入工程は1.0E10ions/cm2〜1.0E18ions/cm2のイオンドーズ量と3KeV〜60KeVのイオン注入エネルギーで行うことを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
- 前記(d)段階で前記第1イオン注入工程によって注入されたイオンは前記半導体基板内で1000Å〜4000Å程度の飛程距離で分布することを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
- 前記第2イオン注入工程は1.0E10ions/cm2〜1.0E18ions/cm2のイオンドーズ量と3KeV〜55KeVのイオン注入エネルギーで行うことを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
- 前記(f)段階で前記第2イオン注入工程によって注入されたイオンは前記半導体基板内で300Å〜3000Å程度の飛程距離で分布することを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
- 前記(a)段階で前記第2パッド膜の上部に酸化膜を蒸着する段階をさらに含むことを特徴とする請求項4記載の半導体素子のトレンチ形成方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2003-47630 | 2003-07-12 | ||
KR10-2003-0047630A KR100525925B1 (ko) | 2003-07-12 | 2003-07-12 | 반도체 소자의 트렌치 형성방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005033165A true JP2005033165A (ja) | 2005-02-03 |
JP4699691B2 JP4699691B2 (ja) | 2011-06-15 |
Family
ID=33563015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003424484A Expired - Fee Related JP4699691B2 (ja) | 2003-07-12 | 2003-12-22 | 半導体素子のトレンチ形成方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6924217B2 (ja) |
JP (1) | JP4699691B2 (ja) |
KR (1) | KR100525925B1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1557875A1 (en) * | 2003-12-29 | 2005-07-27 | STMicroelectronics S.r.l. | Process for forming tapered trenches in a dielectric material |
KR100831260B1 (ko) * | 2006-12-29 | 2008-05-22 | 동부일렉트로닉스 주식회사 | 트렌치 소자 격리막에서 모서리 라운딩부를 형성하는 방법 |
KR20120073727A (ko) * | 2010-12-27 | 2012-07-05 | 삼성전자주식회사 | 스트레인드 반도체 영역을 포함하는 반도체 소자와 그 제조방법, 및 그것을 포함하는 전자 시스템 |
US8993451B2 (en) * | 2011-04-15 | 2015-03-31 | Freescale Semiconductor, Inc. | Etching trenches in a substrate |
CN111627802B (zh) * | 2019-02-27 | 2023-08-25 | 无锡华润微电子有限公司 | 一种碳化硅器件制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0372652A (ja) * | 1990-07-31 | 1991-03-27 | Toshiba Corp | 半導体装置の製造方法 |
JPH0590401A (ja) * | 1991-04-15 | 1993-04-09 | Gold Star Electron Co Ltd | 半導体装置及びその製造方法 |
JPH07211893A (ja) * | 1994-01-13 | 1995-08-11 | Sony Corp | 電界効果トランジスタとその製法 |
JPH10135321A (ja) * | 1996-10-25 | 1998-05-22 | Lg Semicon Co Ltd | 半導体素子隔離領域の形成方法 |
JP2001053138A (ja) * | 1999-08-10 | 2001-02-23 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3454951B2 (ja) * | 1994-12-12 | 2003-10-06 | 株式会社半導体エネルギー研究所 | 半導体装置の作製方法 |
US5662768A (en) * | 1995-09-21 | 1997-09-02 | Lsi Logic Corporation | High surface area trenches for an integrated ciruit device |
US6281093B1 (en) * | 2000-07-19 | 2001-08-28 | Chartered Semiconductor Manufacturing Ltd. | Method to reduce trench cone formation in the fabrication of shallow trench isolations |
-
2003
- 2003-07-12 KR KR10-2003-0047630A patent/KR100525925B1/ko active IP Right Grant
- 2003-12-10 US US10/731,144 patent/US6924217B2/en not_active Expired - Lifetime
- 2003-12-22 JP JP2003424484A patent/JP4699691B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0372652A (ja) * | 1990-07-31 | 1991-03-27 | Toshiba Corp | 半導体装置の製造方法 |
JPH0590401A (ja) * | 1991-04-15 | 1993-04-09 | Gold Star Electron Co Ltd | 半導体装置及びその製造方法 |
JPH07211893A (ja) * | 1994-01-13 | 1995-08-11 | Sony Corp | 電界効果トランジスタとその製法 |
JPH10135321A (ja) * | 1996-10-25 | 1998-05-22 | Lg Semicon Co Ltd | 半導体素子隔離領域の形成方法 |
JP2001053138A (ja) * | 1999-08-10 | 2001-02-23 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20050009264A1 (en) | 2005-01-13 |
KR20050007984A (ko) | 2005-01-21 |
KR100525925B1 (ko) | 2005-11-02 |
JP4699691B2 (ja) | 2011-06-15 |
US6924217B2 (en) | 2005-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090189243A1 (en) | Semiconductor device with trench isolation structure and method for fabricating the same | |
JP2005328049A (ja) | トレンチ素子分離膜を含む半導体素子及びその製造方法 | |
JP4699691B2 (ja) | 半導体素子のトレンチ形成方法 | |
KR100293453B1 (ko) | 듀얼 게이트 산화막의 형성방법 | |
CN114420629A (zh) | 半导体结构及其制作方法 | |
JP2005197642A (ja) | 半導体素子の酸化膜形成方法 | |
KR100934050B1 (ko) | 반도체 소자의 제조방법 및 구조 | |
US20090170276A1 (en) | Method of Forming Trench of Semiconductor Device | |
KR101147372B1 (ko) | 반도체 소자의 듀얼 게이트 산화막 방법 | |
KR20070023170A (ko) | 반도체 소자의 트렌치 형성방법 | |
KR100691943B1 (ko) | 반도체 소자의 제조 방법 | |
KR20090000987A (ko) | 플래시 메모리 소자의 제조 방법 | |
KR100364814B1 (ko) | 반도체소자의 트랜치 형성방법 | |
KR20090069630A (ko) | 반도체 소자의 트랜치 형성 방법 | |
CN107731685B (zh) | 半导体结构的形成方法 | |
KR100632053B1 (ko) | 반도체 장치의 소자 분리막의 제조 방법 | |
KR100871373B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR100444609B1 (ko) | 반도체 소자의 소자 분리막 형성 방법 | |
KR100480919B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR20050011487A (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR20080029268A (ko) | 반도체 소자의 소자분리막 및 그 형성방법 | |
KR100743629B1 (ko) | 반도체 소자의 제조방법 | |
KR100588641B1 (ko) | 트렌치 코너 라운딩 향상 방법 | |
KR20020050918A (ko) | 플레쉬 메모리 소자의 제조방법 | |
JP2006245541A (ja) | フラッシュメモリ素子の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20060201 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20060809 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061023 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20081110 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081202 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090218 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100203 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100415 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110201 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110303 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4699691 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |