KR100771886B1 - 블럭 공중합체를 사용한 미세 콘택홀 형성 방법 및 반도체소자 제조 방법 - Google Patents
블럭 공중합체를 사용한 미세 콘택홀 형성 방법 및 반도체소자 제조 방법 Download PDFInfo
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- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
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- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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Abstract
Description
Claims (19)
- 기판 상에 다수 개의 하부패턴들을 형성하고;상기 하부패턴 상에 절연막을 형성하고;상기 절연막 상에 자기조립 유도층을 형성하고;상기 자기조립 유도층 내에 상기 하부패턴에 정렬된 리세스부를 형성하고;상기 리세스부 내에 블럭 공중합체층을 형성하여 상기 블럭 공중합체층 내에 상기 리세스부의 측벽들에서 이격되어 위치하는 고분자 도메인과 상기 고분자 도메인을 둘러싸는 고분자 매트릭스를 형성하고;상기 고분자 도메인을 선택적으로 제거하고;상기 고분자 매트릭스를 마스크로 하여 상기 자기조립 유도층을 식각하여 상기 자기조립 유도층 내에 상기 절연막을 노출시키는 개구부를 형성하고; 및상기 자기조립 유도층을 마스크로 하여 상기 개구부 내에 노출된 절연막을 식각하여 콘택홀을 형성하는 것을 포함하는 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제1항에 있어서,상기 하나의 리세스부는 다수 개의 하부패턴들을 가로지르도록 형성하고,상기 고분자 도메인은 다수 개 형성되되, 상기 다수 개의 고분자 도메인들은 상기 고분자 매트릭스에 의해 이격되어 상기 리세스부와 중첩되는 상기 하부패턴들 에 각각 정렬되는 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제1항에 있어서,상기 고분자 도메인은 반구형(sphere type), 실린더형(cylinder type) 또는 육면체형(hexahedron type)인 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제1항에 있어서,상기 자기조립 유도층은 하드 마스크층인 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제4항에 있어서,상기 하드 마스크층은 제1 하드 마스크층과 제2 하드 마스크층의 적층막이고,상기 리세스부는 상기 제2 하드 마스크층 내에 형성되는 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제5항에 있어서,상기 제1 하드 마스크층은 비정질 탄소층(Amorphous Carbon Layer; ACL)이고, 상기 제2 하드 마스크층은 실리콘 질화막, 실리콘 산질화막, 실리콘 카바이드층 또는 비정질 실리콘층인 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제1항에 있어서,상기 자기조립 유도층은 포토레지스트층인 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제7항에 있어서,상기 포토레지스트층을 형성하기 전에 상기 절연막 상에 하드 마스크층을 형성하는 것을 더 포함하는 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 제8항에 있어서,상기 하드 마스크층은 제1 하드 마스크층과 제2 하드 마스크층의 적층막이고,상기 제1 하드 마스크층은 비정질 탄소층이고, 상기 제2 하드 마스크층은 실리콘 질화막, 실리콘 산질화막, 실리콘 카바이드층 또는 비정질 실리콘층인 것을 특징으로 하는 미세 콘택홀 형성 방법.
- 기판 상에 소자분리영역을 형성하여 서로 평행한 활성영역들을 정의하고;상기 활성영역들 상에 절연막을 형성하고;상기 절연막 상에 자기조립 유도층을 형성하고;상기 자기조립 유도층 내에 상기 활성영역들에 정렬되고 상기 활성영역들 상 부를 가로지르는 리세스부를 형성하고;상기 리세스부 내에 블럭 공중합체층을 형성하여 상기 블럭 공중합체층 내에 상기 리세스부의 측벽들에서 이격되어 위치하는 다수 개의 고분자 도메인들과 상기 고분자 도메인들을 둘러싸는 고분자 매트릭스를 형성하되, 상기 다수 개의 고분자 도메인들은 상기 고분자 매트릭스에 의해 이격되어 상기 리세스부와 중첩되는 상기 활성영역들에 각각 정렬되고;상기 고분자 도메인들을 선택적으로 제거하고;상기 고분자 매트릭스를 마스크로 하여 상기 자기조립 유도층을 식각하여 상기 자기조립 유도층 내에 상기 절연막을 노출시키는 개구부들을 형성하고; 및상기 자기조립 유도층을 마스크로 하여 상기 개구부들 내에 노출된 절연막을 식각하여 콘택홀들을 형성하는 것을 포함하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제10항에 있어서,상기 절연막을 형성하기 전에 상기 활성영역들 상에 상기 활성영역들 상부를 가로지르는 서로 평행한 게이트 라인들을 형성하는 것을 더 포함하고,상기 리세스부는 상기 게이트 라인들 사이에 위치한 활성영역들을 가로지르는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제11항에 있어서,상기 게이트 라인들은 스트링 선택 라인, 접지 선택 라인, 및 상기 스트링 선택 라인과 상기 접지 선택 라인 사이의 워드 라인들이고,상기 리세스부는 상기 스트링 선택 라인들 사이에 위치한 활성영역들을 가로지르는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제10항에 있어서,상기 고분자 도메인은 반구형(sphere type), 실린더형(cylinder type) 또는 육면체형(hexahedron type)인 것을 특징으로 하는 반도체 소자 제조 방법.
- 제10항에 있어서,상기 자기조립 유도층은 하드 마스크층인 것을 특징으로 하는 반도체 소자 제조 방법.
- 제14항에 있어서,상기 하드 마스크층은 제1 하드 마스크층과 제2 하드 마스크층의 적층막이고,상기 리세스부는 상기 제2 하드 마스크층 내에 형성되는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제15항에 있어서,상기 제1 하드 마스크층은 비정질 탄소층이고, 상기 제2 하드 마스크층은 실리콘 질화막, 실리콘 산질화막, 실리콘 카바이드층 또는 비정질 실리콘층인 것을 특징으로 하는 반도체 소자 제조 방법.
- 제10항에 있어서,상기 자기조립 유도층은 포토레지스트층인 것을 특징으로 하는 반도체 소자 제조 방법.
- 제17항에 있어서,상기 포토레지스트층을 형성하기 전에 상기 절연막 상에 하드 마스크층을 형성하는 것을 더 포함하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제18항에 있어서,상기 하드 마스크층은 제1 하드 마스크층과 제2 하드 마스크층의 적층막이고,상기 제1 하드 마스크층은 비정질 탄소층이고, 상기 제2 하드 마스크층은 실리콘 질화막, 실리콘 산질화막, 실리콘 카바이드층 또는 비정질 실리콘층인 것을 특징으로 하는 반도체 소자 제조 방법.
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Cited By (23)
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US8513359B2 (en) | 2007-06-19 | 2013-08-20 | Micron Technology, Inc. | Crosslinkable graft polymer non preferentially wetted by polystyrene and polyethylene oxide |
US8512846B2 (en) | 2007-01-24 | 2013-08-20 | Micron Technology, Inc. | Two-dimensional arrays of holes with sub-lithographic diameters formed by block copolymer self-assembly |
US8518275B2 (en) | 2008-05-02 | 2013-08-27 | Micron Technology, Inc. | Graphoepitaxial self-assembly of arrays of downward facing half-cylinders |
US8551808B2 (en) | 2007-06-21 | 2013-10-08 | Micron Technology, Inc. | Methods of patterning a substrate including multilayer antireflection coatings |
US8557128B2 (en) | 2007-03-22 | 2013-10-15 | Micron Technology, Inc. | Sub-10 nm line features via rapid graphoepitaxial self-assembly of amphiphilic monolayers |
US8609221B2 (en) | 2007-06-12 | 2013-12-17 | Micron Technology, Inc. | Alternating self-assembling morphologies of diblock copolymers controlled by variations in surfaces |
US8633112B2 (en) | 2008-03-21 | 2014-01-21 | Micron Technology, Inc. | Thermal anneal of block copolymer films with top interface constrained to wet both blocks with equal preference |
KR101355167B1 (ko) * | 2007-12-14 | 2014-01-28 | 삼성전자주식회사 | 적어도 세 개의 고분자 블록을 구비하는 블록 공중합체를이용한 미세 패턴 형성 방법 |
US8642157B2 (en) | 2008-02-13 | 2014-02-04 | Micron Technology, Inc. | One-dimensional arrays of block copolymer cylinders and applications thereof |
KR101361381B1 (ko) * | 2009-06-22 | 2014-02-10 | 마이크론 테크놀로지, 인크. | 패턴 형성에 블록 공중합체를 이용하는 방법 |
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