KR100447234B1 - 반도체 소자의 금속 배선 형성방법 - Google Patents
반도체 소자의 금속 배선 형성방법 Download PDFInfo
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- KR100447234B1 KR100447234B1 KR10-2001-0087211A KR20010087211A KR100447234B1 KR 100447234 B1 KR100447234 B1 KR 100447234B1 KR 20010087211 A KR20010087211 A KR 20010087211A KR 100447234 B1 KR100447234 B1 KR 100447234B1
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000004065 semiconductor Substances 0.000 title claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 152
- 239000002184 metal Substances 0.000 claims abstract description 152
- 239000007769 metal material Substances 0.000 claims abstract description 37
- 239000007864 aqueous solution Substances 0.000 claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 11
- 238000000151 deposition Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 32
- 239000000758 substrate Substances 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 16
- 238000011049 filling Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004528 spin coating Methods 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 4
- 239000012964 benzotriazole Substances 0.000 claims description 4
- -1 mercapto compound Chemical class 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 3
- 239000012498 ultrapure water Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 71
- 239000011229 interlayer Substances 0.000 description 11
- 238000005240 physical vapour deposition Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 238000009713 electroplating Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 3
- OBDVFOBWBHMJDG-UHFFFAOYSA-N 3-mercapto-1-propanesulfonic acid Chemical compound OS(=O)(=O)CCCS OBDVFOBWBHMJDG-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- WHMDPDGBKYUEMW-UHFFFAOYSA-N pyridine-2-thiol Chemical compound SC1=CC=CC=N1 WHMDPDGBKYUEMW-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical group S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910008482 TiSiN Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003746 surface roughness Effects 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
Classifications
-
- 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
- H01L21/76879—Filling of holes, grooves or trenches, e.g. vias, with conductive material by selective deposition of conductive material in the vias, e.g. selective C.V.D. on semiconductor material, plating
-
- 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
- H01L21/76807—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 for dual damascene structures
-
- 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
- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
- H01L21/76873—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers for electroplating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (12)
- 하부 금속 배선상의 절연막에 콘택홀 및 상부 금속 배선용 트렌치를 형성하는 단계;전면에 베리어 금속층, 금속 시드층을 차례로 형성하는 단계;상기 금속 시드층을 구성하는 금속 물질을 포화 용해시킨 금속 수용액을 사용하여,온도 변화에 따라 변화되는 용해도 차이에 의해 발생하는 금속 물질을 자연 석출하는 구동력을 이용하여 금속층을 성장시켜 상기 콘택홀 및 트렌치 내에 금속물질을 충진하는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 금속 시드층은 구리인 것을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 금속 수용액은 초순수(超純水)에 CuSO4이 포화 용해되었거나 포화 용해도의 90% 이상으로 용해된 황산구리 수용액인 것을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 3 항에 있어서,상기 금속 수용액에 황산, 염산 중에 어느 하나 또는 그 혼합물을 첨가하여 pH를 낮추거나, NH4OH, KOH, NaOH 중에 어느 하나 또는 그 혼합물을 첨가하여 pH를 높히는 것을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 3 항에 있어서,상기 금속 수용액에 벤젠트리아졸(Benzotriazole: BTA)계 물질, 사이어리아(Thiourea)계 물질, 머캡토 화합물(Mercapto compound) 중에 어느 하나 또는 그 혼합물을 더 첨가함을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 콘택홀 및 트렌치에 금속물질을 충진하는 단계는,상기 콘택홀 및 트렌치를 포함하는 반도체 기판을 금속 수용액보다 낮은 온도 또는 냉각상태로 유지시키는 공정과,상기 반도체 기판에 스핀 코팅 방식으로 금속 수용액을 분사하는 공정으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 6 항에 있어서,상기 스핀 코팅 방식은 10∼1000rpm의 속도로 회전하는 반도체 기판에 10초∼10분 동안 초당 0.5∼10cc의 유량으로 금속 수용액을 분사하는 조건으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 콘택홀 및 트렌치에 금속물질을 충진하는 단계는,상기 콘택홀 및 트렌치를 포함하는 반도체 기판에 스핀 코팅 방식으로 금속 수용액을 분사하여 상기 콘택홀 및 트렌치 패턴내에 금속 수용액을 채우는 공정과,상기 반도체 기판을 냉각 플레이트(Chill plate)에서 냉각시키는 공정으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 8 항에 있어서,상기 스핀 코팅 방식은 100rpm 이하의 속도로 회전하는 반도체 기판에 초당 0.5∼10cc의 유량으로 금속 수용액을 분사하는 조건으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 콘택홀 및 트렌치에 금속물질을 충진하는 단계는,금속 수용액이 담긴 욕에 상기 콘택홀 및 트렌치를 포함하는 반도체 기판을 장입하는 공정과,상기 금속 수용액을 냉각시키는 공정으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 8 항 또는 제 10 항에 있어서,상기 냉각공정은 10초∼10분 동안 진행됨을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
- 제 1 항에 있어서,상기 콘택홀 및 트렌치에 금속물질을 충진하는 단계는,비워진 욕에 상기 콘택홀 및 트렌치를 포함하는 반도체 기판을 장입하는 공정과,상기 반도체 기판의 온도보다 높은 온도의 금속 수용액을 욕에 채우는 공정으로 이루어짐을 특징으로 하는 반도체 소자의 금속 배선 형성방법.
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KR10-2001-0087211A KR100447234B1 (ko) | 2001-12-28 | 2001-12-28 | 반도체 소자의 금속 배선 형성방법 |
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KR10-2001-0087211A KR100447234B1 (ko) | 2001-12-28 | 2001-12-28 | 반도체 소자의 금속 배선 형성방법 |
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KR20030056879A KR20030056879A (ko) | 2003-07-04 |
KR100447234B1 true KR100447234B1 (ko) | 2004-09-04 |
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KR100613381B1 (ko) * | 2004-12-23 | 2006-08-17 | 동부일렉트로닉스 주식회사 | 반도체 소자의 금속 배선 형성 방법 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04246854A (ja) * | 1991-02-01 | 1992-09-02 | Nippon Sheet Glass Co Ltd | 薄膜コンデンサ |
KR20000027762A (ko) * | 1998-10-29 | 2000-05-15 | 김영환 | 반도체 소자의 금속배선 제조방법 |
KR20000043056A (ko) * | 1998-12-28 | 2000-07-15 | 김영환 | 반도체 소자의 구리 배선 형성 방법 |
KR20010096408A (ko) * | 2000-04-11 | 2001-11-07 | 이경수 | 금속 배선 형성방법 |
KR20010112891A (ko) * | 2000-06-15 | 2001-12-22 | 박종섭 | 반도체 소자의 구리 금속배선 형성 방법 |
US6416812B1 (en) * | 2000-06-29 | 2002-07-09 | International Business Machines Corporation | Method for depositing copper onto a barrier layer |
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2001
- 2001-12-28 KR KR10-2001-0087211A patent/KR100447234B1/ko not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04246854A (ja) * | 1991-02-01 | 1992-09-02 | Nippon Sheet Glass Co Ltd | 薄膜コンデンサ |
KR20000027762A (ko) * | 1998-10-29 | 2000-05-15 | 김영환 | 반도체 소자의 금속배선 제조방법 |
KR20000043056A (ko) * | 1998-12-28 | 2000-07-15 | 김영환 | 반도체 소자의 구리 배선 형성 방법 |
KR20010096408A (ko) * | 2000-04-11 | 2001-11-07 | 이경수 | 금속 배선 형성방법 |
KR20010112891A (ko) * | 2000-06-15 | 2001-12-22 | 박종섭 | 반도체 소자의 구리 금속배선 형성 방법 |
US6416812B1 (en) * | 2000-06-29 | 2002-07-09 | International Business Machines Corporation | Method for depositing copper onto a barrier layer |
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