KR102761236B1 - 패턴 형성 방법 - Google Patents
패턴 형성 방법 Download PDFInfo
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- KR102761236B1 KR102761236B1 KR1020190067796A KR20190067796A KR102761236B1 KR 102761236 B1 KR102761236 B1 KR 102761236B1 KR 1020190067796 A KR1020190067796 A KR 1020190067796A KR 20190067796 A KR20190067796 A KR 20190067796A KR 102761236 B1 KR102761236 B1 KR 102761236B1
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- South Korea
- Prior art keywords
- light
- resist material
- pattern
- forming
- polymer
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 123
- 238000005530 etching Methods 0.000 claims abstract description 47
- 230000004888 barrier function Effects 0.000 claims abstract description 8
- 239000013077 target material Substances 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims description 86
- 229910052751 metal Inorganic materials 0.000 claims description 57
- 239000002184 metal Substances 0.000 claims description 57
- 239000002243 precursor Substances 0.000 claims description 31
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 25
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 25
- 229920001400 block copolymer Polymers 0.000 claims description 24
- 229920002120 photoresistant polymer Polymers 0.000 claims description 22
- 230000007935 neutral effect Effects 0.000 claims description 15
- 238000001338 self-assembly Methods 0.000 claims description 12
- 238000000059 patterning Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims 2
- 239000002861 polymer material Substances 0.000 claims 1
- 239000004793 Polystyrene Substances 0.000 description 13
- 239000004065 semiconductor Substances 0.000 description 11
- 238000000137 annealing Methods 0.000 description 10
- 229920002223 polystyrene Polymers 0.000 description 10
- 238000004380 ashing Methods 0.000 description 8
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 8
- 238000005191 phase separation Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 4
- 238000004528 spin coating Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
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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
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- 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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- H01L21/31144—Etching the insulating layers by chemical or physical means using masks
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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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32139—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer using masks
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
도 2a 내지 도 2g는 다른 실시예에 따른 반도체장치의 패턴 형성 방법을 설명하기 위한 도면이다.
202 : 하드마스크층
203 : 제1레지스트물질
204 : 중성층
205 : 제2레지스트물질
206I : 금속함유 프리커서
Claims (18)
- 식각 타겟 물질 상에 제1레지스트물질을 형성하는 단계;
상기 제1레지스트물질 상에 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계;
상기 제2레지스트물질의 차광성 부분을 노광마스크로 이용하여 상기 제1레지스트 물질을 노광시키는 단계;
상기 제2레지스트물질을 제거하는 단계;
상기 노광된 제1레지스트 물질을 현상하여 제1레지스트패턴을 형성하는 단계; 및
상기 제1레지스트패턴을 식각배리어로 하여 상기 식각 타겟층을 식각하는 단계
를 포함하며,
상기 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계는,
상기 제1레지스트물질 상에 투광성 레지스트물질을 형성하는 단계; 및
상기 투광성 레지스트 물질의 일부분을 차광성 레지스트로 컨버팅하는 단계
를 포함하는 패턴 형성 방법.
- 삭제
- 제1항에 있어서,
상기 투광성 레지스트 물질의 일부분을 차광성 레지스트로 컨버팅하는 단계는,
상기 투광성 레지스트 물질의 일부분에 차광물질을 주입하는 단계
를 포함하는 패턴 형성 방법.
- 제3항에 있어서,
상기 차광물질은 금속을 포함하는 패턴 형성 방법.
- 식각 타겟 물질 상에 제1레지스트물질을 형성하는 단계;
상기 제1레지스트물질 상에 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계;
상기 제2레지스트물질의 차광성 부분을 노광마스크로 이용하여 상기 제1레지스트 물질을 노광시키는 단계;
상기 제2레지스트물질을 제거하는 단계;
상기 노광된 제1레지스트 물질을 현상하여 제1레지스트패턴을 형성하는 단계; 및
상기 제1레지스트패턴을 식각배리어로 하여 상기 식각 타겟층을 식각하는 단계
를 포함하며,
상기 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계는,
상기 제1레지스트물질 상에 제1폴리머와 제2폴리머가 자기 조립 유도된 투광성 폴리머물질을 형성하는 단계; 및
상기 제1폴리머를 차광성 폴리머로 컨버팅하기 위해 차광물질이 함유된 프리커서를 흘려주는 단계를 포함하되,
상기 차광물질이 함유된 프리커서는 상기 제2폴리머에 비반응성인
패턴 형성 방법.
- 제5항에 있어서,
상기 차광물질이 함유된 프리커서는 금속함유 프리커서를 포함하는 패턴 형성 방법.
- 식각 타겟 물질 상에 제1레지스트물질을 형성하는 단계;
상기 제1레지스트물질 상에 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계;
상기 제2레지스트물질의 차광성 부분을 노광마스크로 이용하여 상기 제1레지스트 물질을 노광시키는 단계;
상기 제2레지스트물질을 제거하는 단계;
상기 노광된 제1레지스트 물질을 현상하여 제1레지스트패턴을 형성하는 단계; 및
상기 제1레지스트패턴을 식각배리어로 하여 상기 식각 타겟층을 식각하는 단계
를 포함하며,
상기 차광성 부분과 투광성 부분을 포함하는 제2레지스트물질을 형성하는 단계는,
상기 제1레지스트물질 상에 제1폴리머와 제2폴리머가 자기 조립 유도된 투광성 블록코폴리머를 형성하는 단계; 및
상기 투광성 블록코폴리머의 제1폴리머를 차광성 폴리머로 컨버팅하기 위해 금속함유 프리커서를 흘려주는 단계를 포함하되,
상기 금속함유 프리커서는 상기 제2폴리머에 비반응성인
패턴 형성 방법.
- 제7항에 있어서,
상기 투광성 블록코폴리머는 PMMA와 PS를 포함하고, 상기 금속함유 프리커서는 상기 PMMA에 반응성인 금속을 포함하는
패턴 형성 방법.
- 제8항에 있어서,
상기 금속함유 프리커서는 TMA를 포함하는
패턴 형성 방법.
- 제1항에 있어서,
상기 제1레지스트물질은, 포토레지스트를 포함하는 패턴 형성 방법.
- 제1항에 있어서,
상기 제1레지스트 물질을 노광시키는 단계는,
블랭킷 노광 공정으로 수행하는 패턴 형성 방법.
- 식각 타겟층 상에 하드마스크층을 형성하는 단계;
상기 하드마스크층 상에 포토레지스트를 형성하는 단계;
상기 포토레지스트 상에 중성층을 형성하는 단계;
상기 중성층 상에 복수의 투광성 폴리머 패턴 및 복수의 차광성 폴리머 패턴이 자기 조립된 다이렉트 자기조립 물질(DSA)을 형성하는 단계;
상기 투광성 폴리머 패턴을 노광마스크로 이용한 블랭킷 노광 공정을 수행하여 상기 포토레지스트를 노광하는 단계;
상기 포토레지스트의 노광 부분을 현상하여 포토레지스트패턴을 형성하는 단계; 및
상기 포토레지스트패턴을 통해 상기 하드마스크층을 패터닝하는 단계
를 포함하며,
상기 다이렉트 자기조립 물질(DSA)을 형성하는 단계는,
상기 중성층 상에 제1폴리머와 제2폴리머가 자기 조립 유도된 투광성 블록코폴리머를 형성하는 단계; 및
상기 투광성 블록코폴리머의 제1폴리머를 상기 차광성 폴리머 패턴으로 컨버팅하기 위해 금속함유 프리커서를 흘려주는 단계를 포함하되,
상기 금속함유 프리커서는 상기 제2폴리머에 비반응성인
패턴 형성 방법.
- 삭제
- 제12항에 있어서,
상기 투광성 블록코폴리머는 PMMA와 PS를 포함하고, 상기 금속함유 프리커서는 상기 PMMA에 반응성인 금속을 포함하는
패턴 형성 방법.
- 제14항에 있어서,
상기 금속함유 프리커서는 TMA를 포함하는
패턴 형성 방법.
- 제12항에 있어서,
상기 포토 레지스트물질은, DUV 포토레지스트를 포함하는 패턴 형성 방법.
- 제12항에 있어서,
상기 블랭킷 노광 공정은, DUV 노광 광원을 이용하여 수행되는 패턴 형성 방법.
- 제12항에 있어서,
상기 포토레지스트패턴을 통해 상기 하드마스크층을 패터닝하는 단계 이후에,
상기 패터닝된 하드마스크층을 식각배리어로 하여 상기 식각타겟층을 식각하는 단계를 더 포함하는 패턴 형성 방법.
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