KR100749035B1 - 반도체 장치의 형성방법 - Google Patents
반도체 장치의 형성방법 Download PDFInfo
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- KR100749035B1 KR100749035B1 KR1020060047988A KR20060047988A KR100749035B1 KR 100749035 B1 KR100749035 B1 KR 100749035B1 KR 1020060047988 A KR1020060047988 A KR 1020060047988A KR 20060047988 A KR20060047988 A KR 20060047988A KR 100749035 B1 KR100749035 B1 KR 100749035B1
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- deep trench
- substrate
- trench capacitor
- forming
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000004065 semiconductor Substances 0.000 title claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 125000006850 spacer group Chemical group 0.000 claims abstract description 28
- 238000005530 etching Methods 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims 1
- 238000005498 polishing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000206 photolithography Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021342 tungsten silicide Inorganic materials 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- 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
- H10B12/05—Making the transistor
- H10B12/053—Making the transistor the transistor being at least partially in a trench in the substrate
-
- 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
-
- 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
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/34—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells the transistor being at least partially in a trench in the substrate
-
- 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
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/37—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells the capacitor being at least partially in a trench in the substrate
-
- 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
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/488—Word lines
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (16)
- 상부가 노출된 적어도 2개의 딥 트렌치 캐패시터(deep trench capacitor) 장치를 가진 기판을 제공하고;상기 딥 트렌치 캐패시터의 상부 측벽에 스페이서(spacer)를 형성하며;마스크(mask)로서 상기 딥 트렌치 캐패시터의 상부 및 스페이서를 사용하여 기판을 에칭하여 리세스(recess)를 형성한 다음;상기 리세스에 리세스드 게이트(recessed gate)를 형성하는 단계를 포함하는 반도체 장치의 형성방법.
- 제 1 항에 있어서, 상부가 노출된 적어도 2개의 딥 트렌치 캐패시터 장치를 가진 기판을 제공하는 단계가, 패드층(pad layer)이 형성된 기판을 제공하고; 상기 패드층 및 상기 기판을 패턴화하여 적어도 2개의 트렌치를 형성하며; 각각의 트렌치에 딥 트렌치 캐패시터 장치를 형성하고; 딥 트렌치 캐패시터 장치의 상부가 노출될 때까지 패드층을 제거하는 단계를 포함하는 반도체 장치의 형성방법.
- 제 2 항에 있어서, 상기 패드층이 패드 질화층(pad nitride layer) 및 패드 산화층(pad oxide layer)을 포함하는 반도체 장치의 형성방법.
- 제 1 항에 있어서, 리세스드 게이트의 상부 표면이 딥 트렌치 캐패시터 장치 와 실질적으로 동일한 수준인 반도체 장치의 형성방법.
- 제 1 항에 있어서, 상기 기판을 임플란팅(implanting)하여 리세스드 게이트의 반대측에 소오스 영역(source region) 및 드레인 영역(drain region)을 형성하는 단계를 추가로 포함하는 반도체 장치의 형성방법.
- 제 1 항에 있어서, 상기 스페이서가 실리콘 옥사이드, 실리콘 니트라이드 및 실리콘 옥시니트라이드로 이루어지는 그룹 중에서 선택된 1종의 물질을 포함하는 반도체 장치의 형성방법.
- 상부가 노출된 복수개의 딥 트렌치 캐패시터 장치를 가진 기판을 제공하고;상기 딥 트렌치 캐패시터의 상부 측벽에 스페이서를 형성하여 딥 트렌치 캐패시터 장치로 둘러싸인 예정(predetermined) 영역을 형성하며;마스크로서 상기 딥 트렌치 캐패시터의 상부 및 스페이서를 사용하여 기판의 예정 영역을 에칭하여 리세스를 형성한 다음;상기 리세스에 리세스드 게이트를 형성하는 단계를 포함하는 반도체 장치의 형성방법.
- 제 7 항에 있어서, 상기 복수개의 딥 트렌치 캐패시터가 매트릭스(matrix)로 배열된 4개의 딥 트렌치 캐패시터인 반도체 장치의 형성방법.
- 제 7 항에 있어서, 리세스에 리세스드 게이트를 형성한 후, 기판에 샐로우 트렌치 아이솔레이션(shallow trench isolation)을 형성하여 활성 영역(active area)을 정의하는 단계를 추가로 포함하는 반도체 장치의 형성방법.
- 제 9 항에 있어서, 샐로우 트렌치 아이솔레이션이 리세스드 게이트의 코너 4개만을 절단하는 반도체 장치의 형성방법.
- 제 7 항에 있어서, 리세스드 게이트를 전기적으로 연결하는 워드 라인(word line)을 형성하는 단계를 추가로 포함하는 반도체 장치의 형성방법.
- 제 11 항에 있어서, 상기 딥 트렌치 캐패시터를 오버라이하는(overlying) 워드 라인 부분이 리세스드 게이트를 오버라이하는 다른 부분보다 넓은 반도체 장치의 형성방법.
- 제 7 항에 있어서, 상부가 노출된 적어도 2개의 딥 트렌치 캐패시터 장치를 가진 기판을 제공하는 단계가, 패드층이 형성된 기판을 제공하고; 상기 패드층 및 상기 기판을 패턴화하여 적어도 2개의 트렌치를 형성하며; 각각의 트렌치에 딥 트렌치 캐패시터 장치를 형성하고; 딥 트렌치 캐패시터 장치의 상부가 노출될 때까지 패드층을 제거하는 단계를 포함하는 반도체 장치의 형성방법.
- 제 7 항에 있어서, 리세스에 리세스드 게이트를 형성하는 단계가, 리세스내에 게이트 유전체층을 형성하고; 기판위에 도전체(conductive material) 층을 형성하며; 도전체층, 스페이서 및 딥 트렌치 캐패시터의 상부를 폴리싱(polishing)하여 리세스드 게이트를 형성하는 단계를 포함하는 반도체 장치의 형성방법.
- 제 7 항에 있어서, 상기 기판을 임플란팅하여 리세스드 게이트의 반대측에 소오스 영역 및 드레인 영역을 형성하는 단계를 추가로 포함하는 반도체 장치의 형성방법.
- 제 7 항에 있어서, 상기 스페이서가 실리콘 옥사이드, 실리콘 니트라이드 및 실리콘 옥시니트라이드로 이루어지는 그룹 중에서 선택된 1종의 물질을 반도체 장치의 형성방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/141,656 US7316952B2 (en) | 2005-05-31 | 2005-05-31 | Method for forming a memory device with a recessed gate |
US11/141,656 | 2005-05-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060124597A KR20060124597A (ko) | 2006-12-05 |
KR100749035B1 true KR100749035B1 (ko) | 2007-08-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020060047988A KR100749035B1 (ko) | 2005-05-31 | 2006-05-29 | 반도체 장치의 형성방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7316952B2 (ko) |
EP (1) | EP1729338B1 (ko) |
JP (1) | JP4427037B2 (ko) |
KR (1) | KR100749035B1 (ko) |
CN (1) | CN100388464C (ko) |
TW (1) | TWI302363B (ko) |
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US7563686B2 (en) * | 2005-05-31 | 2009-07-21 | Nanya Technology Corporation | Method for forming a memory device with a recessed gate |
TWI343625B (en) * | 2006-03-09 | 2011-06-11 | Nanya Technology Corp | A semiconductor device and manufacturing method of the same |
TWI323498B (en) * | 2006-04-20 | 2010-04-11 | Nanya Technology Corp | Recessed gate mos transistor device and method of making the same |
TWI278043B (en) * | 2006-05-12 | 2007-04-01 | Nanya Technology Corp | Method for fabricating self-aligned recessed-gate MOS transistor device |
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2005
- 2005-05-31 US US11/141,656 patent/US7316952B2/en active Active
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2006
- 2006-05-16 EP EP06010091.4A patent/EP1729338B1/en active Active
- 2006-05-22 TW TW095118105A patent/TWI302363B/zh active
- 2006-05-29 KR KR1020060047988A patent/KR100749035B1/ko active IP Right Grant
- 2006-05-31 CN CNB2006100876637A patent/CN100388464C/zh active Active
- 2006-05-31 JP JP2006150946A patent/JP4427037B2/ja active Active
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Also Published As
Publication number | Publication date |
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TW200642043A (en) | 2006-12-01 |
EP1729338A2 (en) | 2006-12-06 |
TWI302363B (en) | 2008-10-21 |
CN1873948A (zh) | 2006-12-06 |
CN100388464C (zh) | 2008-05-14 |
EP1729338B1 (en) | 2016-07-06 |
US20060270149A1 (en) | 2006-11-30 |
US7316952B2 (en) | 2008-01-08 |
KR20060124597A (ko) | 2006-12-05 |
JP4427037B2 (ja) | 2010-03-03 |
JP2006339648A (ja) | 2006-12-14 |
EP1729338A3 (en) | 2009-04-15 |
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