KR100564124B1 - 오목형 금속 배선을 이용한 콘택 형성 방법 - Google Patents
오목형 금속 배선을 이용한 콘택 형성 방법 Download PDFInfo
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- KR100564124B1 KR100564124B1 KR1020030050399A KR20030050399A KR100564124B1 KR 100564124 B1 KR100564124 B1 KR 100564124B1 KR 1020030050399 A KR1020030050399 A KR 1020030050399A KR 20030050399 A KR20030050399 A KR 20030050399A KR 100564124 B1 KR100564124 B1 KR 100564124B1
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- Prior art keywords
- concave
- contact
- insulating film
- metal
- etching
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 100
- 239000002184 metal Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000005530 etching Methods 0.000 claims abstract description 27
- 238000000151 deposition Methods 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910018182 Al—Cu Inorganic materials 0.000 claims description 2
- 229910008599 TiW Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 2
- 230000008021 deposition Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000006117 anti-reflective coating Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- 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
- H01L21/76841—Barrier, adhesion or liner layers
-
- 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
- H01L21/30—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
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76802—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 dielectrics, e.g. smoothing by forming openings in dielectrics
-
- 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
- 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
- H01L21/76897—Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (13)
- 반도체 기판상에 형성된 디바이스와 하부 금속선을 절연하기 위한 절연막을 증착하고 식각하여 오목형 절연막 라인을 형성하는 단계;금속층을 증착하는 단계;하부 금속선을 형성하기 위한 마스크를 형성하는 단계;상기 금속층을 식각하여 오목형 프로파일을 가지는 하부 금속선을 형성하는 단계;상기 오목형 하부 금속선 상부에 금속선간 절연막을 증착하는 단계;상기 금속선간 절연막을 식각하여 콘택 홀을 형성하는 단계; 및상기 콘택 홀을 매립하여 콘택 플러그를 형성하는 단계를 포함함을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 반도체 기판상에 형성된 디바이스와 하부 금속선을 절연하기 위한 절연막은 8000 내지 10000Å임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 오목형 절연막 라인은 깊이가 1000Å, 너비가 하부 금속선의 40 내지 60%임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 오목형 절연막 라인의 식각 공정 조건은 인가 전력이 100 내지 500watts, 가스 압력이 100 내지 500mTorr, CF4 가스가 100 내지 200sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 오목형 절연막 라인의 식각 공정 조건은 인가 전력이 100 내지 500watts, 가스 압력이 100 내지 500mTorr, SF6 가스가 5 내지 100sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 금속층의 증착은 하부 금속선을 형성하기 위해 금속을 5000Å 증착 및 ARC 금속을 1000Å 증착하는 것을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 6항에 있어서,상기 하부 금속선을 형성하기 위한 금속은 Al-Cu alloy, Cu, W, Pt, Au, Ti, TiN 및 TiW 중 어느 하나를 사용함을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 오목형 하부 금속선의 형성 공정 조건은 인가 파워를 100 내지 300watts, 공정 압력을 5 내지 20mTorr, Cl2 가스를 10 내지 100sccm, BCl3 가스를 10 내지 100sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 1항에 있어서,상기 금속선간 절연막의 식각은 2단계로 이루어져 있음을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 9항에 있어서,상기 금속간 절연막 식각의 1단계는 인가 전력이 1000 내지 2000watts, 공정 압력이 50 내지 100mTorr, CF4 가스가 50 내지 200sccm, CHF3 가스가 20 내지 100sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 9항에 있어서,상기 금속간 절연막 식각의 1단계는 인가 전력이 1000 내지 2000watts, 공정 압력이 50 내지 100mTorr, CF4 가스가 50 내지 200sccm, C4F8 가스가 10 내지 50sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 9항에 있어서,상기 금속간 절연막 식각의 2단계는 인가 전력이 100 내지 500watts, 공정 압력가 100 내지 500mTorr, CF4 가스가 100 내지 200sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
- 제 9항에 있어서,상기 금속간 절연막 식각의 2단계는 인가 전력이 100 내지 500watts, 공정 압력가 100 내지 500mTorr, SF6 가스가 5 내지 100sccm임을 특징으로 하는 오목형 금속 배선을 이용한 콘택 형성 방법.
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KR1020030050399A KR100564124B1 (ko) | 2003-07-23 | 2003-07-23 | 오목형 금속 배선을 이용한 콘택 형성 방법 |
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KR1020030050399A KR100564124B1 (ko) | 2003-07-23 | 2003-07-23 | 오목형 금속 배선을 이용한 콘택 형성 방법 |
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KR20050011351A KR20050011351A (ko) | 2005-01-29 |
KR100564124B1 true KR100564124B1 (ko) | 2006-03-27 |
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