KR100822079B1 - 단일 면 매립 스트랩 - Google Patents
단일 면 매립 스트랩 Download PDFInfo
- Publication number
- KR100822079B1 KR100822079B1 KR1020027017467A KR20027017467A KR100822079B1 KR 100822079 B1 KR100822079 B1 KR 100822079B1 KR 1020027017467 A KR1020027017467 A KR 1020027017467A KR 20027017467 A KR20027017467 A KR 20027017467A KR 100822079 B1 KR100822079 B1 KR 100822079B1
- Authority
- KR
- South Korea
- Prior art keywords
- trench
- silicon
- deposited
- polysilicon
- 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.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/038—Making the capacitor or connections thereto the capacitor being in a trench in the substrate
- H10B12/0385—Making a connection between the transistor and the capacitor, e.g. buried strap
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/038—Making the capacitor or connections thereto the capacitor being in a trench in the substrate
- H10B12/0383—Making the capacitor or connections thereto the capacitor being in a trench in the substrate wherein the transistor is vertical
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Semiconductor Memories (AREA)
- Element Separation (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (13)
- 깊은 트렌치 내에 매립 스트랩(a buried strap)을 형성하는 방법으로서,(a) 저장 커패시터의 리세싱된 실리콘(48)의 노드 도전체 위의 깊은 트렌치 내 및 상기 깊은 트렌치의 측벽상의 절연 칼러(isolation collar, 42)상에 장벽 층(32)을 증착하는 단계와,(b) 상기 장벽 층(32) 위에 실리콘 층(34)을 증착하는 단계와,(c) 상기 깊은 트렌지 내의 상기 증착된 실리콘층으로 도펀트 이온(36)을 비스듬히 주입하여 상기 증착된 실리콘(34)이 상기 깊은 트렌치의 한 측면을 따라 도핑되지 않게 하는 단계와,(d) 도핑되지 않은 실리콘(40)을 에칭하여 상기 장벽 층(32)의 일부 및 상기 절연 칼러(42)의 제 1 부분이 노출되게 하는 단계와,(e) 상기 장벽 층(32)의 일부 및 상기 절연 칼러(42)의 제 1 부분을 에칭하는 단계와,(f) 상기 깊은 트렌치 내에 제 2 장벽 층(124)을 증착하는 단계와,(g) 반응성 이온 에칭에 의해 상기 제 2 장벽 층(124)을 에칭하는 단계와,(h) 상기 절연 칼러(42)의 제 2 부분(45)을 에칭하여 상기 리세싱된 실리콘(48)의 상위 표면 아래로 확장되는 칼러 디보트(a collar divot, 46)를 생성하는 단계와,(i) 상기 제 2 장벽 층(124)을 제거하는 단계와,(j) 폴리실리콘(52)을 증착하여 매립 스트랩(50)을 형성하는 단계를 포함하는방법.
- 제 1 항에 있어서,상기 장벽 층(32) 및 상기 제 2 장벽 층(124)은 실리콘 질화물로 형성되는방법.
- 제 1 항에 있어서,상기 폴리실리콘(52)을 상기 칼러 디보트(46) 내에 남기면서, 상기 매립 스트랩(50)을 형성하기 위해 증착된 상기 폴리실리콘(52)을 에칭하는 단계를 더 포함하는방법.
- 제 3 항에 있어서,트렌치 최상부 산화물을 증착하고, 상기 트렌치 최상부 산화물을 상기 트렌치의 상기 한쪽 측벽으로부터 에칭하는 단계를 더 포함하는방법.
- 제 4 항에 있어서,게이트 산화물(54)을 형성하고, 게이트 물질(126)을 증착하는 단계를 더 포함하는방법.
- 제 5 항에 있어서,상기 게이트 물질(126)은 폴리실리콘인방법.
- 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,상기 실리콘 층(34)은 비결정성 실리콘을 포함하는방법.
- 삭제
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/603,442 US6573137B1 (en) | 2000-06-23 | 2000-06-23 | Single sided buried strap |
US09/603,442 | 2000-06-23 | ||
PCT/US2001/020206 WO2002001607A2 (en) | 2000-06-23 | 2001-06-25 | Method of producing trench capacitor buried strap |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030069800A KR20030069800A (ko) | 2003-08-27 |
KR100822079B1 true KR100822079B1 (ko) | 2008-04-15 |
Family
ID=24415457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020027017467A Expired - Fee Related KR100822079B1 (ko) | 2000-06-23 | 2001-06-25 | 단일 면 매립 스트랩 |
Country Status (5)
Country | Link |
---|---|
US (2) | US6573137B1 (ko) |
EP (1) | EP1292983B1 (ko) |
KR (1) | KR100822079B1 (ko) |
TW (2) | TW495906B (ko) |
WO (1) | WO2002001607A2 (ko) |
Families Citing this family (49)
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US6426253B1 (en) * | 2000-05-23 | 2002-07-30 | Infineon Technologies A G | Method of forming a vertically oriented device in an integrated circuit |
US6794242B1 (en) * | 2000-09-29 | 2004-09-21 | Infineon Technologies Ag | Extendible process for improved top oxide layer for DRAM array and the gate interconnects while providing self-aligned gate contacts |
DE10131709B4 (de) * | 2001-06-29 | 2006-10-26 | Infineon Technologies Ag | Verfahren zur Herstellung einseitiger Buried-Straps |
US6566706B1 (en) * | 2001-10-31 | 2003-05-20 | Silicon Storage Technology, Inc. | Semiconductor array of floating gate memory cells and strap regions |
US6586300B1 (en) * | 2002-04-18 | 2003-07-01 | Infineon Technologies Ag | Spacer assisted trench top isolation for vertical DRAM's |
US20040110429A1 (en) * | 2002-07-26 | 2004-06-10 | Eberhard Wizgall | Integrated intake manifold and heat exchanger |
DE10242054B3 (de) * | 2002-09-11 | 2004-04-15 | Infineon Technologies Ag | Teststruktur |
US6759702B2 (en) | 2002-09-30 | 2004-07-06 | International Business Machines Corporation | Memory cell with vertical transistor and trench capacitor with reduced burried strap |
US6979851B2 (en) * | 2002-10-04 | 2005-12-27 | International Business Machines Corporation | Structure and method of vertical transistor DRAM cell having a low leakage buried strap |
US6734482B1 (en) | 2002-11-15 | 2004-05-11 | Micron Technology, Inc. | Trench buried bit line memory devices |
TWI223408B (en) * | 2003-05-09 | 2004-11-01 | Nanya Technology Corp | Trench type capacitor formation method |
US6750116B1 (en) * | 2003-07-14 | 2004-06-15 | Nanya Technology Corp. | Method for fabricating asymmetric inner structure in contacts or trenches |
DE10333777B4 (de) * | 2003-07-24 | 2007-01-25 | Infineon Technologies Ag | Herstellungsverfahren für einen Grabenkondensator mit einem Isolationskragen, der über einen vergrabenen Kontakt einseitig mit einem Substrat elektrisch verbunden ist, insbesondere für eine Halbleiterspeicherzelle |
DE102004026000A1 (de) * | 2003-07-25 | 2005-02-24 | Infineon Technologies Ag | DRAM-Zellenfeld und Halbleiterspeichereinrichtung mit vertikalen Speicherzellen und Verfahren zur Herstellung eines DRAM-Zellenfeldes und eines DRAMs |
US20050088895A1 (en) * | 2003-07-25 | 2005-04-28 | Infineon Technologies Ag | DRAM cell array having vertical memory cells and methods for fabricating a DRAM cell array and a DRAM |
TWI227933B (en) * | 2003-12-05 | 2005-02-11 | Nanya Technology Corp | Method for forming a self-aligned buried strap of a vertical memory cell |
TWI225689B (en) * | 2003-12-05 | 2004-12-21 | Nanya Technology Corp | Method for forming a self-aligned buried strap in a vertical memory cell |
TWI235426B (en) * | 2004-01-28 | 2005-07-01 | Nanya Technology Corp | Method for manufacturing single-sided buried strap |
US7034352B2 (en) * | 2004-02-11 | 2006-04-25 | Infineon Technologies Ag | DRAM with very shallow trench isolation |
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DE102004031694A1 (de) * | 2004-06-30 | 2006-01-19 | Infineon Technologies Ag | Herstellungsverfahren für einen Grabenkondensator mit einem Isolationskragen, der über einen vergrabenen Kontakt einseitig mit einem Substrat elektrisch verbunden ist, insbesondere für eine Halbleiterspeicherzelle |
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US7898014B2 (en) * | 2006-03-30 | 2011-03-01 | International Business Machines Corporation | Semiconductor device structures with self-aligned doped regions and methods for forming such semiconductor device structures |
US20080048186A1 (en) * | 2006-03-30 | 2008-02-28 | International Business Machines Corporation | Design Structures Incorporating Semiconductor Device Structures with Self-Aligned Doped Regions |
TWI300975B (en) * | 2006-06-08 | 2008-09-11 | Nanya Technology Corp | Method for fabricating recessed-gate mos transistor device |
US20070284612A1 (en) * | 2006-06-09 | 2007-12-13 | International Business Machines Corporation | Semiconductor devices with one-sided buried straps |
US7618867B2 (en) * | 2006-07-26 | 2009-11-17 | Infineon Technologies Ag | Method of forming a doped portion of a semiconductor and method of forming a transistor |
TW200816388A (en) * | 2006-09-20 | 2008-04-01 | Nanya Technology Corp | A manufacturing method of a memory device |
US7691734B2 (en) * | 2007-03-01 | 2010-04-06 | International Business Machines Corporation | Deep trench based far subcollector reachthrough |
US7439149B1 (en) | 2007-09-26 | 2008-10-21 | International Business Machines Corporation | Structure and method for forming SOI trench memory with single-sided strap |
CN101409210B (zh) * | 2007-10-09 | 2010-06-02 | 南亚科技股份有限公司 | 半导体元件及其制作方法 |
US8008160B2 (en) | 2008-01-21 | 2011-08-30 | International Business Machines Corporation | Method and structure for forming trench DRAM with asymmetric strap |
US7838928B2 (en) * | 2008-06-06 | 2010-11-23 | Qimonda Ag | Word line to bit line spacing method and apparatus |
US9016236B2 (en) * | 2008-08-04 | 2015-04-28 | International Business Machines Corporation | Method and apparatus for angular high density plasma chemical vapor deposition |
US8227310B2 (en) * | 2008-08-06 | 2012-07-24 | International Business Machines Corporation | Integrated circuits comprising an active transistor electrically connected to a trench capacitor by an overlying contact and methods of making |
US20100090348A1 (en) * | 2008-10-10 | 2010-04-15 | Inho Park | Single-Sided Trench Contact Window |
KR101096184B1 (ko) * | 2009-11-30 | 2011-12-22 | 주식회사 하이닉스반도체 | 자기정렬된 다마신공정을 이용한 반도체장치의 측벽콘택 제조 방법 |
JP2011205030A (ja) * | 2010-03-26 | 2011-10-13 | Elpida Memory Inc | 半導体装置および半導体装置の製造方法 |
KR101133692B1 (ko) * | 2010-07-07 | 2012-04-19 | 에스케이하이닉스 주식회사 | 이온주입을 이용한 마스킹막 형성 방법 및 그를 이용한 반도체장치 제조 방법 |
KR101202690B1 (ko) * | 2010-12-09 | 2012-11-19 | 에스케이하이닉스 주식회사 | 반도체장치의 측벽콘택 형성 방법 |
KR101213931B1 (ko) * | 2010-12-14 | 2012-12-18 | 에스케이하이닉스 주식회사 | 수직형 반도체 소자 및 그 제조 방법 |
US8786014B2 (en) | 2011-01-18 | 2014-07-22 | Powerchip Technology Corporation | Vertical channel transistor array and manufacturing method thereof |
KR20120097663A (ko) * | 2011-02-25 | 2012-09-05 | 에스케이하이닉스 주식회사 | 반도체 장치의 매립 비트라인 제조 방법 |
JP2012248665A (ja) * | 2011-05-27 | 2012-12-13 | Elpida Memory Inc | 半導体デバイスの製造方法 |
US10043810B1 (en) | 2017-08-18 | 2018-08-07 | Winbond Electronics Corp. | Dynamic random access memory and method of fabricating the same |
US12082395B2 (en) * | 2019-06-14 | 2024-09-03 | Samsung Electronics Co., Ltd. | Semiconductor memory devices and methods of fabricating the same |
KR102795716B1 (ko) * | 2019-06-14 | 2025-04-15 | 삼성전자주식회사 | 반도체 메모리 소자 및 이의 제조 방법 |
KR102683677B1 (ko) * | 2019-07-12 | 2024-07-11 | 에스케이하이닉스 주식회사 | 수직형 메모리 장치 |
CN111403393B (zh) * | 2020-03-24 | 2023-09-19 | 上海华力集成电路制造有限公司 | 一种提高体约束鳍型结构闪存单元耦合率的器件结构 |
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KR20030020290A (ko) * | 2000-06-02 | 2003-03-08 | 인터내셔널 비지네스 머신즈 코포레이션 | 트렌치 커패시터의 트렌치 내에 절연 칼러를 형성하는방법, 트렌치의 상위 부분에 절연 칼러를 포함하는커패시티브 저장 트렌치 디램 셀 및 커패시티브 저장트렌치 디램 셀의 저장 트렌치의 상위 부분에 절연 칼러를형성하는 방법 |
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2000
- 2000-06-23 US US09/603,442 patent/US6573137B1/en not_active Expired - Lifetime
-
2001
- 2001-05-15 TW TW090111614A patent/TW495906B/zh not_active IP Right Cessation
- 2001-05-30 US US09/870,068 patent/US6426526B1/en not_active Expired - Fee Related
- 2001-06-22 TW TW090115308A patent/TW548801B/zh not_active IP Right Cessation
- 2001-06-25 KR KR1020027017467A patent/KR100822079B1/ko not_active Expired - Fee Related
- 2001-06-25 EP EP01948702A patent/EP1292983B1/en not_active Expired - Lifetime
- 2001-06-25 WO PCT/US2001/020206 patent/WO2002001607A2/en active Application Filing
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US5989972A (en) | 1995-07-24 | 1999-11-23 | Siemens Aktiengesellschaft | Capacitor in a semiconductor configuration and process for its production |
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KR20020000523A (ko) * | 2000-06-23 | 2002-01-05 | 포만 제프리 엘 | 감소된 dt 엣지 바이어스용의 칼라 공정 |
Also Published As
Publication number | Publication date |
---|---|
US6426526B1 (en) | 2002-07-30 |
TW548801B (en) | 2003-08-21 |
US6573137B1 (en) | 2003-06-03 |
EP1292983B1 (en) | 2012-10-24 |
WO2002001607A2 (en) | 2002-01-03 |
KR20030069800A (ko) | 2003-08-27 |
TW495906B (en) | 2002-07-21 |
WO2002001607A3 (en) | 2002-05-23 |
EP1292983A2 (en) | 2003-03-19 |
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