JP5808402B2 - はんだ合金堆積物を基板上に形成する方法 - Google Patents
はんだ合金堆積物を基板上に形成する方法 Download PDFInfo
- Publication number
- JP5808402B2 JP5808402B2 JP2013517206A JP2013517206A JP5808402B2 JP 5808402 B2 JP5808402 B2 JP 5808402B2 JP 2013517206 A JP2013517206 A JP 2013517206A JP 2013517206 A JP2013517206 A JP 2013517206A JP 5808402 B2 JP5808402 B2 JP 5808402B2
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- JP
- Japan
- Prior art keywords
- copper
- solder
- alloy
- layer
- tin
- 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.)
- Expired - Fee Related
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- 229910000679 solder Inorganic materials 0.000 title claims description 184
- 239000000758 substrate Substances 0.000 title claims description 64
- 238000000034 method Methods 0.000 title claims description 63
- 229910045601 alloy Inorganic materials 0.000 title claims description 54
- 239000000956 alloy Substances 0.000 title claims description 54
- 239000000463 material Substances 0.000 claims description 75
- 229910052751 metal Inorganic materials 0.000 claims description 70
- 239000002184 metal Substances 0.000 claims description 70
- 239000011135 tin Substances 0.000 claims description 46
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 37
- 229910052718 tin Inorganic materials 0.000 claims description 36
- 239000010949 copper Substances 0.000 claims description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 27
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 238000009713 electroplating Methods 0.000 claims description 26
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 229910052709 silver Inorganic materials 0.000 claims description 14
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 13
- 239000004332 silver Substances 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 12
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 claims description 9
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 5
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 5
- 229910000629 Rh alloy Inorganic materials 0.000 claims description 4
- 229910000929 Ru alloy Inorganic materials 0.000 claims description 4
- HNWNJTQIXVJQEH-UHFFFAOYSA-N copper rhodium Chemical compound [Cu].[Rh] HNWNJTQIXVJQEH-UHFFFAOYSA-N 0.000 claims description 4
- OUFLLVQXSGGKOV-UHFFFAOYSA-N copper ruthenium Chemical compound [Cu].[Ru].[Ru].[Ru] OUFLLVQXSGGKOV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 claims description 3
- 229910001020 Au alloy Inorganic materials 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 229910001252 Pd alloy Inorganic materials 0.000 claims description 2
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 2
- FHKNFXAIEAYRKQ-UHFFFAOYSA-N [Cu].[Ir] Chemical compound [Cu].[Ir] FHKNFXAIEAYRKQ-UHFFFAOYSA-N 0.000 claims description 2
- PQJKKINZCUWVKL-UHFFFAOYSA-N [Ni].[Cu].[Ag] Chemical compound [Ni].[Cu].[Ag] PQJKKINZCUWVKL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000000788 chromium alloy Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 claims description 2
- XPPWAISRWKKERW-UHFFFAOYSA-N copper palladium Chemical compound [Cu].[Pd] XPPWAISRWKKERW-UHFFFAOYSA-N 0.000 claims description 2
- WBLJAACUUGHPMU-UHFFFAOYSA-N copper platinum Chemical compound [Cu].[Pt] WBLJAACUUGHPMU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003353 gold alloy Substances 0.000 claims description 2
- 229910001174 tin-lead alloy Inorganic materials 0.000 claims description 2
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 claims 1
- WMGRVUWRBBPOSZ-UHFFFAOYSA-N [Cu].[Ni].[Ag].[Sn] Chemical compound [Cu].[Ni].[Ag].[Sn] WMGRVUWRBBPOSZ-UHFFFAOYSA-N 0.000 claims 1
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 claims 1
- 229910000969 tin-silver-copper Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 142
- 238000007747 plating Methods 0.000 description 30
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 17
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 14
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- 150000002500 ions Chemical class 0.000 description 11
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- 238000000151 deposition Methods 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 6
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- 239000010931 gold Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 5
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
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- 239000011368 organic material Substances 0.000 description 4
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- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
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- 229910052738 indium Inorganic materials 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 229940098779 methanesulfonic acid Drugs 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- BWHOZHOGCMHOBV-UHFFFAOYSA-N Benzalacetone Natural products CC(=O)C=CC1=CC=CC=C1 BWHOZHOGCMHOBV-UHFFFAOYSA-N 0.000 description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
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- 229910052729 chemical element Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
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- 239000011133 lead Substances 0.000 description 2
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- 239000011777 magnesium Substances 0.000 description 2
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- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
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- 239000002245 particle Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
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- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
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- 229910052703 rhodium Inorganic materials 0.000 description 2
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- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
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- 239000010703 silicon Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
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- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- BWHOZHOGCMHOBV-BQYQJAHWSA-N trans-benzylideneacetone Chemical compound CC(=O)\C=C\C1=CC=CC=C1 BWHOZHOGCMHOBV-BQYQJAHWSA-N 0.000 description 2
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- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/11—Manufacturing methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these 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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/32051—Deposition of metallic or metal-silicide layers
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- H—ELECTRICITY
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Description
それゆえ、本発明の対象は、はんだ合金堆積物の均一な層及び量を基板上に発生させるためのはんだ材料層の電気めっき法を提供することである。そのような方法は、ボイド又はディンプルを残さずに、高アスペクト比を有するリセス構造を充填するのに適しているべきである。さらに、はんだ合金堆積物は、所望の融点をリフロー操作後に有する所望の合金組成を有しているべきである。好ましいはんだ合金堆積物は、三元合金Sn−Ag−Cu及び四元合金Sn−Ag−Cu−Niであり、かつ(Sn−Ag−Cu(−Ni)合金)の頭文字を取ったSAC合金と呼ばれる。リフロー操作後のはんだ合金組成は、先に堆積された金属シード層、第一に電気めっきされたはんだ材料層及び第二に電気めっきされたはんだ材料層の量及び組成によって制御される。
本発明は、好ましくは錫又は錫合金から成る金属シード層を堆積させ、錫から成る第一のはんだ材料層を電気めっきし、その後に、好ましくは錫合金から成る第二のはんだ材料層を電気めっきすることによって、均質な、かつ目標とされる組成を有するはんだ合金堆積物を基板上に形成する方法を提供する。本プロセスは、はんだバンプを、回路板、IC基板又はインターポーザー上に製作するのに特に適している。本発明による方法は、良好なめっき均一性及び均質な元素組成を伴うはんだバンプを生む。
欧州特許第0616053号明細書には、金属コーティングを非伝導性基板に(無電解コーティングを用いずに)塗布する方法が記載されており、該方法は、
a.前記基板を貴金属/IVA族金属ゾルを含んでなる活性剤と接触させて、処理された基板を得て;
b.前記処理された基板を、
(i)Cu(II)、Ag、Au又はNi可溶性金属塩又はその混合物、
(ii)第IA族金属水酸化物、
(iii)前記金属塩の金属のイオンのための、0.73〜21.95の累積生成定数log Kを有する有機材料を含んでなる錯化剤
の溶液を含んでなるpH11超〜pH13を有する自己促進及び自己補充する浸漬金属組成物と接触させることを含む。
少なくとも1つの順電流パルスの期間対少なくとも1つの逆電流パルスの期間の比は、少なくとも1:0〜1:7、好ましくは少なくとも1:0.5〜1:4、より好ましくは少なくとも1:1〜1:2.5に調節される。
図1aに従ったコンタクトパッド構造を有するIC基板を用いる
Sn(MSA)2としてのSn2+45g/l、MSA(70%溶液)60ml/l、ヒドロキノン2g/l及びベンザルアセトン100mg/l
を含有する浴から伝導性層上にめっきする(図1d)。
順電流密度:2.5A/dm2。
Sn(MSA)2としてのSn2+40g/l、Ag(MSA)としてのAg+1.5g/l、MSA(70%溶液)60ml/l、ヒドロキノン2g/l及びベンザルアセトン100mg/l
を含有する浴から第一のはんだ材料層106上に電気めっきによって堆積する(図1e)。
順電流密度:2A/dm2。
50μmの直径及び20μmの高さのはんだマスク開口部を有する基板を、金属シード層104としての無電解めっき銅−ニッケルで被覆する。レジスト層を堆積し、かつ80μmの直径及び50μmの高さを有するレジスト開口部110を形成する。次いで、はんだマスク開口部109及びレジスト開口部110の高さに関して15μmを、第一のはんだ材料層106としての錫で電気めっきにより充填する。次に、錫−銀合金を、第二のはんだ材料層107として第一のはんだ材料層上にレジスト開口部11の高さに関して15μmを満たして電気めっきにより電気めっきする。
例2を、50μmのはんだマスク開口部直径及び60μmのレジスト開口部110直径により繰り返した。0.25μmの厚さ及び5質量%のニッケル含有率を有する銅層を、金属シード層104として堆積した。90.6μgの質量を有する純粋な錫層を、第一のはんだ材料層106として電気めっきにより堆積した。次に、10μmの高さ及び20.6μgの質量を有する錫−銀合金を、第二のはんだ材料層107としてレジスト開口部110中に電気めっきにより堆積した。前記第二のはんだ材料層107は、銀6質量%を含有する。
102 コンタクトパッド
103 はんだマスク層
104 金属シード層
105 レジスト層
106 第一のはんだ材料層
107 第二のはんだ材料層
108 均一なはんだ合金堆積物
109 はんだマスク開口部
110 レジスト開口部
Claims (5)
- はんだ合金堆積物を基板上に形成する方法であって、以下の工程:
i)少なくとも1つのコンタクト領域102を含む電気回路構成を有する表面を含む基板101を準備する工程、
ii)該基板表面上に配置され、かつ該少なくとも1つのコンタクト領域102を露出するためにパターン形成されるはんだマスク層103を形成する工程、
iii)該はんだマスク層103及び該少なくとも1つのコンタクト領域102を含む該基板領域全体を、金属シード層104を該基板表面上に設けるのに適した溶液と接触させる工程、
iv)レジスト層105を該金属シード層104上に形成し、かつ該レジスト層105中に開口部を作り、該開口部が、はんだマスク開口部110及び少なくとも1つのコンタクトパッド102を露出する工程、
v)純粋な錫から成る第一のはんだ材料層106を、該金属シード層104上に電気めっきする工程、
vi)錫−銀合金から成る第二のはんだ材料層107を、該第一のはんだ材料層106上に電気めっきする工程、
vii)該レジスト層105を除去し、かつ該はんだマスク層領域から該金属シード層104を、該少なくとも1つのコンタクト領域102上に2つの積層されたはんだ材料層を残して除去するに足りる該金属シード層104の量をエッチ除去する工程、
viii)該基板をリフロー処理し、かつ該処理によって該金属シード層104、該第一のはんだ材料層106及び該第二のはんだ材料層107から、はんだ合金堆積物108を形成し、その際、該はんだ合金堆積物108の組成を、該金属シード層104、該第一のはんだ材料層106及び該第二のはんだ材料層107の量及びそれらの各々の元素組成によって制御し、かつ該はんだ合金堆積物108が、50質量%超の錫、1〜6質量%の銀及び0.05〜2質量%の銅を含有する工程を含む、はんだ合金堆積物を基板上に形成する方法。 - 前記金属シード層104が、銅、錫、コバルト、ニッケル、銀、錫−鉛合金、銅−ニッケル合金、銅−クロム合金、銅−ルテニウム合金、銅−ロジウム合金、銅−銀合金、銅−イリジウム合金、銅−パラジウム合金、銅−白金合金、銅−金合金及び銅−希土類合金、銅−ニッケル−銀合金、銅−ニッケル−希土類金属合金、銅/錫(バイレイヤー)、クロム/銅−クロム合金/銅マルチレイヤー及びニッケル/錫/銅マルチレイヤーから成る群から選択されている、請求項1記載の方法。
- 前記金属シード層104が、銅、銅−ニッケル合金、銅−ルテニウム合金及び銅−ロジウム合金から成る群から選択されている、請求項1又は2記載の方法。
- 前記はんだ合金堆積物108が、錫−銀−銅合金及び錫−銀−銅−ニッケル合金から成る群から選択されている、請求項1から3までのいずれか1項記載の方法。
- 前記基板が、プリント回路板、IC基板又はインターポーザーである、請求項1から4までのいずれか1項記載の方法。
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EP10168474.4A EP2405469B1 (en) | 2010-07-05 | 2010-07-05 | Method to form solder alloy deposits on substrates |
PCT/EP2011/060579 WO2012004136A2 (en) | 2010-07-05 | 2011-06-23 | Method to form solder alloy deposits on substrates |
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EP2014798B1 (en) | 2007-07-10 | 2016-04-13 | ATOTECH Deutschland GmbH | Solution and process for increasing the solderability and corrosion resistance of metal or metal alloy surface |
JP4724192B2 (ja) * | 2008-02-28 | 2011-07-13 | 株式会社東芝 | 電子部品の製造方法 |
US20120325671A2 (en) * | 2010-12-17 | 2012-12-27 | Tel Nexx, Inc. | Electroplated lead-free bump deposition |
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2010
- 2010-07-05 EP EP10168474.4A patent/EP2405469B1/en not_active Not-in-force
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2011
- 2011-06-23 CN CN201180033313.1A patent/CN103026476B/zh active Active
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- 2011-06-23 JP JP2013517206A patent/JP5808402B2/ja not_active Expired - Fee Related
- 2011-06-23 US US13/701,499 patent/US8497200B2/en active Active
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CN103026476B (zh) | 2017-04-12 |
WO2012004136A2 (en) | 2012-01-12 |
CN103026476A (zh) | 2013-04-03 |
WO2012004136A3 (en) | 2012-03-01 |
US20130082091A1 (en) | 2013-04-04 |
JP2013531895A (ja) | 2013-08-08 |
EP2405469A1 (en) | 2012-01-11 |
KR20130113409A (ko) | 2013-10-15 |
US8497200B2 (en) | 2013-07-30 |
TW201207970A (en) | 2012-02-16 |
KR101688262B1 (ko) | 2017-01-02 |
EP2405469B1 (en) | 2016-09-21 |
TWI518813B (zh) | 2016-01-21 |
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