KR100685531B1 - 반도체 메모리 소자의 금속 배선 형성 방법 - Google Patents
반도체 메모리 소자의 금속 배선 형성 방법 Download PDFInfo
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- KR100685531B1 KR100685531B1 KR1020050027286A KR20050027286A KR100685531B1 KR 100685531 B1 KR100685531 B1 KR 100685531B1 KR 1020050027286 A KR1020050027286 A KR 1020050027286A KR 20050027286 A KR20050027286 A KR 20050027286A KR 100685531 B1 KR100685531 B1 KR 100685531B1
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- Prior art keywords
- metal
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- forming
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- layer
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 105
- 239000002184 metal Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000004065 semiconductor Substances 0.000 title claims abstract description 32
- 230000015572 biosynthetic process Effects 0.000 title claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 19
- 239000010937 tungsten Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 238000005530 etching Methods 0.000 claims description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 7
- 229920005591 polysilicon Polymers 0.000 claims description 7
- 238000005468 ion implantation Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000004148 unit process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 33
- 229920002120 photoresistant polymer Polymers 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 150000004767 nitrides Chemical class 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002161 passivation Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0149—Manufacturing their interconnections or electrodes, e.g. source or drain electrodes
-
- 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/26506—Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors
-
- 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
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0135—Manufacturing their gate conductors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- High Energy & Nuclear Physics (AREA)
- Power Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Electrodes Of Semiconductors (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims (5)
- 반도체 소자의 금속 배선 형성 방법에 있어서,반도체 기판 상에 게이트 산화막, 게이트 폴리 실리콘막이 적층된 게이트들을 형성하는 단계;이온 주입을 하여 상기 게이트에 인접한 상기 반도체 기판 내에 N+ 접합면들을 형성하는 단계;상기 게이트들을 제외한 반도체 기판에 상기 게이트들을 절연시키는 ILD막을 형성하는 단계;상기 ILD 내부에 금속 패턴을 형성하고, 동시에 상기 게이트 상에 텅스텐 게이트를 형성하는 단계;상기 ILD막을 포함한 전체 구조 상부에 IMD막과 금속 트렌치 산화막을 순차적으로 증착하는 단계; 및상기 ILD막과 상기 IMD막과 상기 금속 트렌치 산화막 내에 상기 N+ 접합면과 상기 금속 패턴을 연결하기 위한 금속 콘택과, 상기 금속 트렌치 산화막 내에 금속층을 형성하는 단계를 포함하는 반도체 메모리 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 금속 패턴을 형성하는 단계는 상기 ILD막을 선택적으로 소정 깊이 만큼 식각하여 ILD 패턴을 형성하는 단계;상기 ILD막 패턴 상에 텅스텐막을 증착하는 단계; 및상기 텅스텐막을 CMP 공정으로 평탄화 식각하여 상기 텅스텐 게이트와 상기 ILD막 내부에 상기 금속 패턴을 동시에 형성하는 단계를 포함하는 반도체 메모리 소자의 금속 배선 형성 방법.
- 제 2 항에 있어서,상기 ILD막의 패턴 형성 단계는 소정 부분을 상기 게이트의 두께와 같아지도록 식각하는 것을 특징으로 하는 반도체 메모리 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 금속 콘택과 상기 제 1 금속층을 형성하는 단계는 상기 금속 트렌치 산화막과 상기 IMD막 및 상기 ILD막을 선택적으로 식각하여 상기 금속 콘택의 콘택홀을 형성하는 단계;상기 금속 트렌치 산화막과 상기 IMD막을 선택적으로 식각하여 상기 금속층의 콘택홀을 형성하는 단계; 및상기 금속 콘택의 콘택홀과 상기 금속층의 콘택홀에 금속 물질을 매립하여 상기 금속 콘택과 상기 금속층을 형성하는 단계를 포함하는 반도체 메모리 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 금속 콘택과 상기 금속층은 같은 물질로 형성하는 것을 특징으로 하는 반도체 메모리 소자의 금속 배선 형성 방법.
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Application Number | Priority Date | Filing Date | Title |
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KR1020050027286A KR100685531B1 (ko) | 2005-03-31 | 2005-03-31 | 반도체 메모리 소자의 금속 배선 형성 방법 |
Applications Claiming Priority (1)
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KR1020050027286A KR100685531B1 (ko) | 2005-03-31 | 2005-03-31 | 반도체 메모리 소자의 금속 배선 형성 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20060104826A KR20060104826A (ko) | 2006-10-09 |
KR100685531B1 true KR100685531B1 (ko) | 2007-02-22 |
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KR1020050027286A KR100685531B1 (ko) | 2005-03-31 | 2005-03-31 | 반도체 메모리 소자의 금속 배선 형성 방법 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100854971B1 (ko) * | 2007-01-23 | 2008-08-28 | 삼성전자주식회사 | 자기정렬 금속막 션트 공정을 이용하는 반도체 장치의 제조방법 |
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