JP5060037B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP5060037B2 JP5060037B2 JP2005294913A JP2005294913A JP5060037B2 JP 5060037 B2 JP5060037 B2 JP 5060037B2 JP 2005294913 A JP2005294913 A JP 2005294913A JP 2005294913 A JP2005294913 A JP 2005294913A JP 5060037 B2 JP5060037 B2 JP 5060037B2
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- 239000004065 semiconductor Substances 0.000 title claims description 64
- 238000004519 manufacturing process Methods 0.000 title claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 65
- 239000002184 metal Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 62
- 238000007747 plating Methods 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 239000001307 helium Substances 0.000 claims 1
- 229910052734 helium Inorganic materials 0.000 claims 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims 1
- 239000010408 film Substances 0.000 description 253
- 239000011229 interlayer Substances 0.000 description 78
- 239000010410 layer Substances 0.000 description 71
- 239000010949 copper Substances 0.000 description 61
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 58
- 229910052802 copper Inorganic materials 0.000 description 58
- 238000005530 etching Methods 0.000 description 24
- 230000004888 barrier function Effects 0.000 description 18
- 238000009792 diffusion process Methods 0.000 description 12
- 238000009832 plasma treatment Methods 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 238000004380 ashing Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000001459 lithography Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- -1 polysiloxane Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910004200 TaSiN Inorganic materials 0.000 description 1
- 229910008482 TiSiN Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- FEBFYWHXKVOHDI-UHFFFAOYSA-N [Co].[P][W] Chemical compound [Co].[P][W] FEBFYWHXKVOHDI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000036962 time dependent Effects 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
- H01L21/02—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
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
-
- 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
- H01L21/76801—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
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76826—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by contacting the layer with gases, liquids or plasmas
-
- 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
- H01L21/76829—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
-
- 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
-
- 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
- H01L21/76883—Post-treatment or after-treatment of the conductive material
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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)
- Plasma & Fusion (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
基板上に、多孔質構造からなる絶縁膜を形成する工程と、
前記絶縁膜に配線形成用の凹部を形成する工程と、
前記絶縁膜上全面に、前記凹部内を埋め込むように金属層を形成する工程と、
前記凹部外部の余剰金属層を除去して配線を形成する工程と、
前記絶縁膜を改質して、当該絶縁膜の表面に改質層を形成する工程と、
前記改質層を形成する工程の後に、めっき液を用いて前記配線上に選択的に金属膜を形成する工程と、
を含むことを特徴とする半導体装置の製造方法が提供される。
図1は、本実施の形態における半導体装置を形成する手順を示すフローチャートである。
本実施の形態においても、第1の実施の形態で図1を参照したのと同様の手順で半導体装置を形成する。本実施の形態において、多層配線をシングルダマシンプロセスで形成する点で、第1の実施の形態で説明したのと異なる。
本実施の形態においても、第1の実施の形態において、図2(a)を参照して説明したのと同様の手順で、半導体基板(不図示)上に形成された第1の絶縁膜100、第1のエッチングストッパ膜101および第2の絶縁膜102に、既知のダマシンプロセスにより、第1バリアメタル103および下層銅配線104を形成する(図6(a))。
本実施の形態において、ハードマスク109をエッチングにより除去する点で、第1の実施の形態で説明したのと異なる。
なお、第2の実施の形態で説明したシングルダマシンプロセスにおいても、ハードマスク129をエッチングにより除去するようにすることもできる。
101 第1のエッチングストッパ膜
102 第2の絶縁膜
103 第1のバリアメタル
104 下層銅配線
105 銅拡散防止膜
106 第1の層間絶縁膜
107 第2のエッチングストッパ膜
108 第2の層間絶縁膜
109 ハードマスク
110 第2のバリアメタル
111 銅膜
112a 第1の上層銅配線
112b 第2の上層銅配線
112c 第3の上層銅配線
113 プラズマ照射
114 改質層
115a 第1のキャップメタル膜
115b 第2のキャップメタル膜
115c 第3のキャップメタル膜
116 第3の層間絶縁膜
117 バリアメタル
118 銅ビア
119 銅拡散防止膜
128 第4の層間絶縁膜
129 ハードマスク
132a 第4の上層銅配線
132b 第5の上層銅配線
132c 第6の上層銅配線
134 改質層
135a 第4のキャップメタル膜
135b 第5のキャップメタル膜
135c 第6のキャップメタル膜
140 レジスト膜
Claims (11)
- 基板上に、多孔質構造からなる絶縁膜を形成する工程と、
前記絶縁膜に配線形成用の凹部を形成する工程と、
前記絶縁膜上全面に、前記凹部内を埋め込むように金属層を形成する工程と、
前記凹部外部の余剰金属層を除去して配線を形成する工程と、
前記絶縁膜を改質して、当該絶縁膜の表面に改質層を形成する工程と、
前記改質層を形成する工程の後に、めっき液を用いて前記配線上に選択的に金属膜を形成する工程と、
を含み、
前記改質層を形成する工程において、前記絶縁膜の表面にプラズマ照射を施すことにより、前記改質層を形成する半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法において、
前記絶縁膜中に前記めっき液が染みこんでしまうことを防止するため、前記改質層を形成する工程が行われる半導体装置の製造方法。 - 請求項1または2に記載の半導体装置の製造方法において、
前記プラズマ照射は、ヘリウム、アルゴン、窒素、アンモニアおよび水素からなる群から選択されたいずれかの雰囲気内で行う半導体装置の製造方法。 - 請求項1から3いずれかに記載の半導体装置の製造方法において、
前記改質層を形成する工程において、前記改質層の膜密度が、前記絶縁膜よりも高くなるように前記改質層を形成する半導体装置の製造方法。 - 請求項1から4いずれかに記載の半導体装置の製造方法において、
少なくとも前記配線を形成する工程の前に、前記絶縁膜に接するよう前記絶縁膜上に、当該絶縁膜よりも膜密度の高い保護絶縁膜を形成する工程と、
前記改質層を形成する工程の前に、前記保護絶縁膜を除去する工程と、
をさらに含む半導体装置の製造方法。 - 請求項5に記載の半導体装置の製造方法において、
前記配線を形成する工程において、前記余剰金属層を除去した後に前記保護絶縁膜を除去する工程を行う半導体装置の製造方法。 - 請求項5または6に記載の半導体装置の製造方法において、
前記配線を形成する工程において、化学機械研磨により前記余剰金属層を除去するとともに、引き続き化学機械研磨により前記保護絶縁膜を除去する工程を行う半導体装置の製造方法。 - 請求項5から7いずれかに記載の半導体装置の製造方法において、
前記改質層を形成する工程において、前記改質層が前記保護絶縁膜よりも比誘電率が低くなるように、前記改質層を形成する半導体装置の製造方法。 - 請求項1から8いずれかに記載の半導体装置の製造方法において、
前記配線を形成する工程において、化学機械研磨により、前記凹部外部の余剰金属層を除去する半導体装置の製造方法。 - 請求項1から9いずれかに記載の半導体装置の製造方法において、
前記金属膜を形成する工程において、前記めっき液は、コバルト、ニッケルまたは銀を含む半導体装置の製造方法。 - 請求項1から10いずれかに記載の半導体装置の製造方法において、
前記絶縁膜は、炭素を含む材料により構成された半導体装置の製造方法。
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JP2005294913A JP5060037B2 (ja) | 2005-10-07 | 2005-10-07 | 半導体装置の製造方法 |
US11/543,947 US7485566B2 (en) | 2005-10-07 | 2006-10-06 | Method of manufacturing semiconductor device |
CN200610142120A CN100583412C (zh) | 2005-10-07 | 2006-10-08 | 制造半导体器件的方法 |
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JP2005294913A JP5060037B2 (ja) | 2005-10-07 | 2005-10-07 | 半導体装置の製造方法 |
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JP5060037B2 true JP5060037B2 (ja) | 2012-10-31 |
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US7504287B2 (en) * | 2007-03-22 | 2009-03-17 | Advanced Micro Devices, Inc. | Methods for fabricating an integrated circuit |
JP5554951B2 (ja) * | 2008-09-11 | 2014-07-23 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP2010225682A (ja) | 2009-03-19 | 2010-10-07 | Toshiba Corp | 半導体装置およびその製造方法 |
JP5671220B2 (ja) * | 2009-08-25 | 2015-02-18 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
US8796150B2 (en) | 2011-01-24 | 2014-08-05 | International Business Machines Corporation | Bilayer trench first hardmask structure and process for reduced defectivity |
CN102760685B (zh) * | 2011-04-27 | 2015-01-21 | 中芯国际集成电路制造(上海)有限公司 | 铜互连线的刻蚀后处理方法 |
US9058983B2 (en) | 2013-06-17 | 2015-06-16 | International Business Machines Corporation | In-situ hardmask generation |
CN110112095A (zh) * | 2019-04-25 | 2019-08-09 | 中国科学院上海微系统与信息技术研究所 | 一种集成结构的制备方法以及由此得到的铜互连线与介质层集成结构 |
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US6255217B1 (en) | 1999-01-04 | 2001-07-03 | International Business Machines Corporation | Plasma treatment to enhance inorganic dielectric adhesion to copper |
JP2002043315A (ja) | 2000-07-26 | 2002-02-08 | Sony Corp | 半導体装置およびその製造方法 |
JP2003031580A (ja) * | 2001-07-18 | 2003-01-31 | Toshiba Corp | 半導体装置の製造方法 |
JP2003100746A (ja) * | 2001-09-27 | 2003-04-04 | Hitachi Ltd | 半導体装置の製造方法 |
JP2003258085A (ja) * | 2002-02-27 | 2003-09-12 | Fujitsu Ltd | 配線構造及びその形成方法 |
JP2003273216A (ja) * | 2002-03-18 | 2003-09-26 | Sony Corp | 半導体装置およびその製造方法 |
JP2003332422A (ja) * | 2002-05-13 | 2003-11-21 | Sony Corp | 半導体装置およびその製造方法 |
JP2005056945A (ja) * | 2003-08-08 | 2005-03-03 | Hitachi Ltd | 半導体装置の製造方法 |
JP2005079116A (ja) | 2003-08-29 | 2005-03-24 | Semiconductor Leading Edge Technologies Inc | 半導体装置の製造方法 |
JP4606006B2 (ja) * | 2003-09-11 | 2011-01-05 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP2005194598A (ja) * | 2004-01-09 | 2005-07-21 | Semiconductor Leading Edge Technologies Inc | めっき方法、基板形成方法及び基板 |
JP2005217373A (ja) * | 2004-02-02 | 2005-08-11 | Tokyo Electron Ltd | 表面処理方法 |
JP4854938B2 (ja) * | 2004-07-06 | 2012-01-18 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
US20060040490A1 (en) * | 2004-08-18 | 2006-02-23 | Jei-Ming Chen | Method of fabricating silicon carbide-capped copper damascene interconnect |
KR20070063499A (ko) * | 2004-10-26 | 2007-06-19 | 로무 가부시키가이샤 | 반도체 장치 및 반도체 장치의 제조 방법 |
JP2006147653A (ja) * | 2004-11-16 | 2006-06-08 | Renesas Technology Corp | 半導体装置の製造方法 |
US7253105B2 (en) | 2005-02-22 | 2007-08-07 | International Business Machines Corporation | Reliable BEOL integration process with direct CMP of porous SiCOH dielectric |
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US20070082476A1 (en) | 2007-04-12 |
US7485566B2 (en) | 2009-02-03 |
CN100583412C (zh) | 2010-01-20 |
CN1945808A (zh) | 2007-04-11 |
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