JPWO2007004256A1 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 361
- 229910052751 metal Inorganic materials 0.000 claims abstract description 218
- 239000002184 metal Substances 0.000 claims abstract description 218
- 230000004888 barrier function Effects 0.000 claims abstract description 135
- 239000011229 interlayer Substances 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 238000005530 etching Methods 0.000 claims description 22
- 238000005498 polishing Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 21
- 229910052802 copper Inorganic materials 0.000 description 21
- 239000010949 copper Substances 0.000 description 21
- 229910052581 Si3N4 Inorganic materials 0.000 description 15
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 229910052814 silicon oxide Inorganic materials 0.000 description 13
- 229920002120 photoresistant polymer Polymers 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000007747 plating Methods 0.000 description 7
- 229910052715 tantalum Inorganic materials 0.000 description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
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- 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
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- 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
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- 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
- H01L21/76829—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
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- 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
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- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/7685—Barrier, adhesion or liner layers the layer covering a conductive structure
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- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
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- 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
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Abstract
Description
Claims (17)
- 半導体基板上に設けられた第1の金属層と、
前記第1の金属層上に設けられた層間絶縁膜と、
前記層間絶縁膜内に形成された開口部内に下地層に接して設けられ、前記第1の金属層と接続する第2の金属層と、
前記第2の金属層と前記層間絶縁膜の間に形成され、前記下地層とはその組成が異なる第1のバリア層と、を具備する半導体装置。 - 前記下地層は前記第1の金属層である請求項1記載の半導体装置。
- 前記下地層は前記第2のバリア層である請求項1記載の半導体装置。
- 前記第2の金属層は、前記第1の金属層と主な組成の異なる請求項3記載の半導体装置。
- 前記第1のバリア層は上方向に行くに従いその幅が薄くなる請求項1から4のいずれか一項記載の半導体装置。
- 前記第2の金属層は、配線層とプラグ金属の少なくとも一方を含む請求項1から5のいずれか一項記載の半導体装置の製造方法。
- 半導体基板上に形成された第1の金属層上に、第1のバリア層となるべき導電膜を形成する工程と、
前記導電膜をエッチングし開口部を形成する工程と、
前記開口部内に第2の金属層を形成する工程と、
前記第2の金属層の周りの領域以外の前記導電膜をエッチングし前記第1のバリア層を形成する工程と、を有する半導体装置の製造方法。 - 前記第2の金属層を形成する工程は、前記半導体基板全面に金属層となるべき金属膜を形成する工程と、前記金属膜を前記導電膜まで研磨する工程を含む請求項7記載の半導体装置の製造方法。
- 前記第2の金属層を形成する工程は、前記第2の金属層が前記第1の金属層に接し前記第2の金属層を形成する工程である請求項7または8記載の半導体装置の製造方法。
- 前記第1の金属層上に、第2のバリア層を形成する工程を有し、前記導電膜を形成する工程は、前記導電膜を前記第2のバリア層上に形成する工程である請求項7または8記載の半導体装置の製造方法。
- 前記第2のバリア層の組成は、前記第1のバリア層と異なる請求項10記載の半導体装置の製造方法。
- 前記第2の金属層は、前記第1の金属層と主な組成の異なる請求項10または11記載の半導体装置の製造方法
- 前記開口部を形成する工程は、前記導電膜をテーパ状にエッチングする工程を含む請求項7から12のいずれか一項記載の半導体装置の製造方法。
- 前記第1のバリア層を形成する工程は、前記導電膜の表面全面をエッチングする工程を含む請求項13記載の半導体装置の製造方法。
- 前記第2の金属層および前記第1のバリア層の形成された領域の間の前記第1の金属層上に層間絶縁膜を形成する工程を有する請求項7から14のいずれか一項記載の半導体装置の製造方法。
- 前記層間絶縁膜を形成する工程は、前記層間絶縁膜となるべき層の膜厚を前記第2の金属層および前記第1のバリア層の膜厚より厚く形成する工程と、前記層間絶縁膜となるべき層を前記第2の金属層または第1のバリア層まで研磨する工程である請求項15記載の半導体装置の製造方法。
- 前記開口部を形成する工程は、前記導電膜に配線層となるべき領域を形成する工程、および前記導電膜にコンタクトホールを形成する工程の少なくとも一方を含み、
前記第2の金属層を形成する工程は、前記配線層を形成すべき領域に配線層を形成する工程、および前記コンタクトホールにプラグ金属を形成する工程の少なくとも一方を含む請求項7から16のいずれか一項記載の半導体装置の製造方法。
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PCT/JP2005/012059 WO2007004256A1 (ja) | 2005-06-30 | 2005-06-30 | 半導体装置およびその製造方法 |
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JP4965443B2 (ja) * | 2005-06-30 | 2012-07-04 | スパンション エルエルシー | 半導体装置の製造方法 |
KR20160073796A (ko) * | 2014-12-17 | 2016-06-27 | 에스케이하이닉스 주식회사 | 전자 장치 및 그 제조 방법 |
US10163758B1 (en) * | 2017-10-30 | 2018-12-25 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and manufacturing method for the same |
KR20210094188A (ko) * | 2020-01-20 | 2021-07-29 | 삼성디스플레이 주식회사 | 표시 장치 및 표시 장치의 제조 방법 |
US11430753B2 (en) * | 2020-07-08 | 2022-08-30 | Raytheon Company | Iterative formation of damascene interconnects |
CN115831764B (zh) * | 2022-12-15 | 2024-08-02 | 成都海光集成电路设计有限公司 | 一种基板中过孔的制作方法、基板及芯片 |
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JP2002198443A (ja) * | 2000-12-26 | 2002-07-12 | Nec Corp | 半導体装置及びその製造方法 |
US6448654B1 (en) * | 2001-01-29 | 2002-09-10 | Advanced Micro Devices, Inc. | Ultra thin etch stop layer for damascene process |
US6387798B1 (en) * | 2001-06-25 | 2002-05-14 | Institute Of Microelectronics | Method of etching trenches for metallization of integrated circuit devices with a narrower width than the design mask profile |
US6413815B1 (en) * | 2001-07-17 | 2002-07-02 | Macronix International Co., Ltd. | Method of forming a MIM capacitor |
JP2004014967A (ja) * | 2002-06-11 | 2004-01-15 | Sony Corp | 半導体装置の製造方法及び半導体装置 |
JP2004023030A (ja) * | 2002-06-20 | 2004-01-22 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
US6867131B2 (en) * | 2002-08-29 | 2005-03-15 | Micron Technology, Inc. | Apparatus and method of increasing sram cell capacitance with metal fill |
JP2004119698A (ja) * | 2002-09-26 | 2004-04-15 | Seiko Epson Corp | 半導体装置およびその製造方法 |
US6787458B1 (en) * | 2003-07-07 | 2004-09-07 | Advanced Micro Devices, Inc. | Polymer memory device formed in via opening |
US7259090B2 (en) * | 2004-04-28 | 2007-08-21 | Taiwan Semiconductor Manufacturing Co., Ltd. | Copper damascene integration scheme for improved barrier layers |
JP4965443B2 (ja) * | 2005-06-30 | 2012-07-04 | スパンション エルエルシー | 半導体装置の製造方法 |
-
2005
- 2005-06-30 JP JP2007523278A patent/JP4965443B2/ja active Active
- 2005-06-30 WO PCT/JP2005/012059 patent/WO2007004256A1/ja active Application Filing
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- 2006-06-30 US US11/479,379 patent/US8008778B2/en not_active Expired - Fee Related
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2011
- 2011-08-24 US US13/217,172 patent/US9570396B2/en active Active
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US20070001311A1 (en) | 2007-01-04 |
US9570396B2 (en) | 2017-02-14 |
US20170154851A1 (en) | 2017-06-01 |
WO2007004256A1 (ja) | 2007-01-11 |
US20110306201A1 (en) | 2011-12-15 |
US8008778B2 (en) | 2011-08-30 |
JP4965443B2 (ja) | 2012-07-04 |
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