JP2005197740A - 半導体素子の銅配線の形成方法 - Google Patents
半導体素子の銅配線の形成方法 Download PDFInfo
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- JP2005197740A JP2005197740A JP2005000231A JP2005000231A JP2005197740A JP 2005197740 A JP2005197740 A JP 2005197740A JP 2005000231 A JP2005000231 A JP 2005000231A JP 2005000231 A JP2005000231 A JP 2005000231A JP 2005197740 A JP2005197740 A JP 2005197740A
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- Prior art keywords
- forming
- tan
- copper
- substrate
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 50
- 239000010949 copper Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000004065 semiconductor Substances 0.000 title claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000005530 etching Methods 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims abstract description 12
- 238000000151 deposition Methods 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 238000000059 patterning Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 25
- 230000004888 barrier function Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 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
Images
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
- H01L21/02—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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
-
- 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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76849—Barrier, adhesion or liner layers formed in openings in a dielectric the layer being positioned on top of the main fill metal
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- 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
【解決手段】本発明の前記目的は所定の素子が形成された基板の上に第1絶縁膜を形成した後、デュアルダマシン工程でトレンチ及びビアを形成する段階と;前記トレンチ及びビアの上に第1Ta/TaN及び銅を蒸着して平坦化する段階と;前記基板の上に第2Ta/TaN膜を蒸着する段階と;前記第1絶縁膜の上に第2Ta/TaN膜を蝕刻してとり除く段階と;前記基板の上に第2絶縁膜を形成する段階と;及び前記第2絶縁膜をパターンして蝕刻した後、導電体を充填してビアを形成する段階とを含んで成り立つことを特徴とする半導体素子の銅配線の形成方法によって逹成される。
【選択図】図9
Description
また、銅合金配線は純粋な銅配線に比べて比抵抗がちょっと大きいが、配線の信頼性と耐蝕性が非常に優秀なことと知られている。
次、図4は上部金属配線と下部金属配線の連結のためのビアを形成する段階だ。図に示されたように、前記層間絶縁膜をパターンを利用して蝕刻してビアホールを形成して、導電体を満たして入れて、ビア15を形成する。
106 ONO階
107 コントロールゲート
111 スプリットゲート
110 スプリットゲート酸化膜
108 第1絶縁膜
109 第2絶縁膜
102 ドレーン
103 ソース
10 基板の絶縁膜
11 バリアー層
12 銅
13 キャッピング層
14 層間絶縁膜
15 ビア
20 基板の第1絶縁膜
21 バリアー層
22 銅
23 第2Ta/TaN
24 キャッピング層
25 第2絶縁
Claims (3)
- 半導体素子の銅配線の形成方法において、
所定の素子が形成された基板の上に第1絶縁膜を形成した後、デュアルダマシン工程でトレンチ及びビアを形成する段階と;
前記トレンチ及びビアの上に第1Ta/TaN及び銅を蒸着して平坦化する段階と;
前記基板の上に第2Ta/TaN膜を蒸着する段階と;
前記第1絶縁膜の上に第2Ta/TaN膜を蝕刻してとり除く段階と;
前記基板の上に第2絶縁膜を形成する段階と;及び
前記第2絶縁膜をパターンして蝕刻した後、導電体を充填してビアを形成する段階と;
を含んで成り立つことを特徴とする半導体素子の銅配線の形成方法。 - 前記銅を蒸着する段階はECP工程であることを特徴とする請求項1に記載の半導体素子の銅配線の形成方法。
- 前記第2Ta/TaN膜を蝕刻する段階で蝕刻されないTa/TaN膜はキャッピング層に使われることを特徴とする請求項1に記載の半導体素子の銅配線の形成方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030100705A KR100563817B1 (ko) | 2003-12-30 | 2003-12-30 | 반도체 소자의 구리 배선 형성 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2005197740A true JP2005197740A (ja) | 2005-07-21 |
Family
ID=34709279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005000231A Pending JP2005197740A (ja) | 2003-12-30 | 2005-01-04 | 半導体素子の銅配線の形成方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7238606B2 (ja) |
JP (1) | JP2005197740A (ja) |
KR (1) | KR100563817B1 (ja) |
DE (1) | DE102004062860A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100738210B1 (ko) * | 2005-12-29 | 2007-07-10 | 동부일렉트로닉스 주식회사 | 반도체 장치의 박막 및 금속 배선 형성 방법 |
KR100738211B1 (ko) * | 2005-12-29 | 2007-07-10 | 동부일렉트로닉스 주식회사 | 반도체 장치의 박막 및 금속 배선 형성 방법 |
KR100778855B1 (ko) * | 2005-12-29 | 2007-11-22 | 동부일렉트로닉스 주식회사 | 구리 금속 배선의 힐락 방지 방법 |
KR100737701B1 (ko) * | 2006-08-31 | 2007-07-10 | 동부일렉트로닉스 주식회사 | 반도체 소자의 배선 형성 방법 |
US7932176B2 (en) | 2008-03-21 | 2011-04-26 | President And Fellows Of Harvard College | Self-aligned barrier layers for interconnects |
CN102044475A (zh) * | 2009-10-13 | 2011-05-04 | 中芯国际集成电路制造(上海)有限公司 | 互连结构及其形成方法 |
CN102054756A (zh) * | 2009-11-10 | 2011-05-11 | 中芯国际集成电路制造(上海)有限公司 | 铜互连结构及其形成方法 |
US20150206798A1 (en) * | 2014-01-17 | 2015-07-23 | Taiwan Semiconductor Manufacturing Company, Ltd. | Interconnect Structure And Method of Forming |
CN111446228A (zh) * | 2019-01-16 | 2020-07-24 | 长鑫存储技术有限公司 | 半导体器件及其制造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4979154B2 (ja) * | 2000-06-07 | 2012-07-18 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
US6566250B1 (en) | 2002-03-18 | 2003-05-20 | Taiwant Semiconductor Manufacturing Co., Ltd | Method for forming a self aligned capping layer |
US6706625B1 (en) * | 2002-12-06 | 2004-03-16 | Chartered Semiconductor Manufacturing Ltd. | Copper recess formation using chemical process for fabricating barrier cap for lines and vias |
US6905964B2 (en) * | 2003-01-09 | 2005-06-14 | Chartered Semiconductor Manufacturing Ltd. | Method of fabricating self-aligned metal barriers by atomic layer deposition on the copper layer |
US6927113B1 (en) * | 2003-05-23 | 2005-08-09 | Advanced Micro Devices | Semiconductor component and method of manufacture |
US7008871B2 (en) * | 2003-07-03 | 2006-03-07 | International Business Machines Corporation | Selective capping of copper wiring |
US6790778B1 (en) | 2003-09-10 | 2004-09-14 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method for capping over a copper layer |
US7361991B2 (en) * | 2003-09-19 | 2008-04-22 | International Business Machines Corporation | Closed air gap interconnect structure |
-
2003
- 2003-12-30 KR KR1020030100705A patent/KR100563817B1/ko not_active IP Right Cessation
-
2004
- 2004-12-21 DE DE102004062860A patent/DE102004062860A1/de not_active Ceased
- 2004-12-30 US US11/026,941 patent/US7238606B2/en active Active
-
2005
- 2005-01-04 JP JP2005000231A patent/JP2005197740A/ja active Pending
-
2007
- 2007-05-08 US US11/745,562 patent/US20070205517A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
KR20050068889A (ko) | 2005-07-05 |
KR100563817B1 (ko) | 2006-03-28 |
DE102004062860A1 (de) | 2005-09-22 |
US7238606B2 (en) | 2007-07-03 |
US20070205517A1 (en) | 2007-09-06 |
US20050146044A1 (en) | 2005-07-07 |
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