JP5311715B2 - 半導体素子接続用金線 - Google Patents
半導体素子接続用金線 Download PDFInfo
- Publication number
- JP5311715B2 JP5311715B2 JP2006001174A JP2006001174A JP5311715B2 JP 5311715 B2 JP5311715 B2 JP 5311715B2 JP 2006001174 A JP2006001174 A JP 2006001174A JP 2006001174 A JP2006001174 A JP 2006001174A JP 5311715 B2 JP5311715 B2 JP 5311715B2
- Authority
- JP
- Japan
- Prior art keywords
- mass
- praseodymium
- strength
- gold wire
- bonding
- 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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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims description 85
- 239000004065 semiconductor Substances 0.000 title claims description 30
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 90
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 90
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 49
- 229910052791 calcium Inorganic materials 0.000 claims description 49
- 239000011575 calcium Substances 0.000 claims description 49
- 229910052746 lanthanum Inorganic materials 0.000 claims description 43
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 43
- 229910052693 Europium Inorganic materials 0.000 claims description 40
- 229910052779 Neodymium Inorganic materials 0.000 claims description 40
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 40
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 40
- 229910052790 beryllium Inorganic materials 0.000 claims description 37
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 37
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 35
- 229910052684 Cerium Inorganic materials 0.000 claims description 34
- 229910052772 Samarium Inorganic materials 0.000 claims description 32
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 32
- 229910052782 aluminium Inorganic materials 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 30
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 238000007711 solidification Methods 0.000 claims description 18
- 230000008023 solidification Effects 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 229910052738 indium Inorganic materials 0.000 claims description 8
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 description 36
- 239000000654 additive Substances 0.000 description 27
- 230000000996 additive effect Effects 0.000 description 27
- 230000000694 effects Effects 0.000 description 25
- 238000002788 crimping Methods 0.000 description 23
- 229910052737 gold Inorganic materials 0.000 description 20
- 239000010931 gold Substances 0.000 description 20
- 238000001816 cooling Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 229910052775 Thulium Inorganic materials 0.000 description 10
- 229910052769 Ytterbium Inorganic materials 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 230000006378 damage Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 9
- 229910052727 yttrium Inorganic materials 0.000 description 9
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 239000011295 pitch Substances 0.000 description 8
- 238000005491 wire drawing Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000137 annealing Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 238000010301 surface-oxidation reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 150000002602 lanthanoids Chemical group 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 238000004857 zone melting Methods 0.000 description 1
Classifications
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- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3013—Au as the principal constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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- H—ELECTRICITY
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- 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
- H01L24/42—Wire connectors; Manufacturing methods related thereto
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
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- H01L24/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
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- H01L2224/45001—Core members of the connector
- H01L2224/4501—Shape
- H01L2224/45012—Cross-sectional shape
- H01L2224/45015—Cross-sectional shape being circular
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H01L2924/00011—Not relevant to the scope of the group, the symbol of which is combined with the symbol of this group
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- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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- H01L2924/01005—Boron [B]
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Description
(1) プラセオジウムの含有量が0.0034質量%以上0.005質量%以下の範囲であり、さらに、0.0002質量%以上0.0009質量%以下のベリリウム、0.0004質量%以上0.004質量%以下のアルミニウムの少なくとも1種類以上を含有することを特徴とする半導体素子接続用金線。
(2) プラセオジウムの含有量が0.0004質量%以上0.0038質量%以下の範囲であり、さらに、0.0006質量%以上0.005質量%以下のカルシウム、0.0004質量%以上0.0015質量%以下のセリウム、0.0005質量%以上0.0033質量%以下のネオジウム、0.0004質量%以上0.0033質量%以下のサマリウム、0.0004質量%以上0.0008質量%以下のランタン、0.0004質量%以上0.002質量%以下のユーロピウムの少なくとも1種類以上を含有し、さらに、0.0002質量%以上0.0009質量%以下のベリリウム、0.0005質量%以上0.003質量%以下のアルミニウムの少なくとも1種類以上を含有することを特徴とする半導体素子接続用金線。
(3) 金線内の任意の断面において、長径0.5μm以上の第二相の密度が10個/mm2以下であることを特徴とする(1)に記載の半導体素子接続用金線。
(4) プラセオジウムの含有量が、質量比でカルシウムと希土類元素(但し、上記(2)で規定するもの。)の総含有量の15%以上である(2)に記載の半導体素子接続用金線。
(5) プラセオジウム、セリウム、ネオジウム、サマリウム、ランタン、ユーロピウム以外の希土類元素の含有量が0.0005質量%以下である(1)〜(4)のいずれかに記載の半導体素子接続用金線。
(6) 0.0003質量%以上0.006質量%以下のインジウムを含有する(1)〜(5)のいずれかに記載の半導体素子接続用金線。
(7) 不可避的不純物として、ケイ素、鉛、リチウム、ナトリウムが0.0014質量%以下である(1)〜(6)のいずれかに記載の半導体素子接続用金線。
(8) 破断強度が210MPa以上である(1)〜(7)のいずれかに記載の半導体素子接続用金線。
(9) 鋳造状態のインゴットからの断面減少率が98%以上である(1)〜(8)のいずれかに記載の半導体素子接続用金線。
(10) 前記インゴットが一方向凝固法で得られたインゴットである(9)に記載の半導体素子接続用金線。
99.9998質量%の金と、これに0.0002質量%〜0.03質量%までのプラセオジウム、カルシウム、ランタン、セリウム、ネオジウム、サマリウム、ユーロピウム、ツリウム、イッテルビウム、イットリウムを添加して、ボンディングワイヤ用金素材について添加量当りの強度と単相化の容易さを比較した。
次に、金線中にプラセオジウムに加えて、カルシウム、セリウム、ネオジウム、ユーロピウム、サマリウム、ランタン、ツリウム、イッテルビウム、イットリウムを添加する複合添加効果を調べた。金線の作製方法は、実施例1と同じであるが、最終線径は20μmとした。最終焼鈍工程における設定破断伸び値は、実施例1と同じ4.5%とした。また、伸線前にインゴット端部をサンプリングして、インゴット断面の第二相の析出量を調べた。
次に、本発明の成分系の金線に対してベリリウム、アルミニウムを添加した時のボンディング特性に与える影響を調べた。成分以外の金線の作製方法は実施例1と同じである。
各種添加元素を組み合わせて、ボンディングワイヤとして、破断伸びが4.5%で引張強度240MPa程度の中強度金線を作製した。現在最も汎用的に使用されている強度レベルの金線である。製造方法及び最終線径は、実施例1と同じである。表3に、成分値(分析値)と破断伸びが3%、4.5%、6%の時の強度、金属間化合物生成の有無を示した。また、表3には、破断伸びを4.5%に調整して作製したボンディングワイヤを用いて評価したボンディング特性を示した。
各種添加元素を組み合わせて、ボンディングワイヤとしては、破断伸びが4.5%で引張強度280MPaを超える高強度金線を作製した。原料、製造方法、最終線径は、実施例1及び2と同じである。表4に、成分値(分析値)と破断伸びが3%、4.5%、6%の時の強度、析出物生成の有無、ボンディング特性を示した。ボンディング特性は、破断伸び4.5%に調整したボンディングワイヤを用いて試験した。析出物、ボンディング特性の評価は、実施例4と同じである。また、ボンディング条件も実施例4と同じである。
99.9998質量%の金と、これに0.002質量%〜0.02質量%までのプラセオジウム、カルシウム、ランタン、セリウム、ネオジウム、サマリウム、ユーロピウム、ツリウム、イッテルビウム、イットリウムを添加して、ボンディングワイヤ用金素材について添加量当りの強度と単相化の容易さを比較した。実施例1とは異なり、溶解方法を一方向凝固法の一つであるゾーンメルト法でインゴットを製造した。
各種添加元素を組み合わせて、ボンディングワイヤとしては、破断伸びが4.0%で引張強度320MPa程度の高強度金線を作製した。ベリリウムとアルミニウムは、実施例3〜5の結果から、それぞれ、0.0003〜0.0006質量%、0.0002〜0.0004質量%とした。
実施例7の結果、強度と圧着形状が優れたワイヤにインジウムを添加し、その効果を調べた。ボンディングワイヤの作製方法は、最終線径を20μmとした以外は、実施例7と同じとした。ワイヤ強度は、破断伸びを3%、4%、8%のときの値を使用した。ボンディング試験に使用するボンディングワイヤの設定伸びは4%とした。
Claims (10)
- プラセオジウムの含有量が0.0034質量%以上0.005質量%以下の範囲であり、さらに、0.0002質量%以上0.0009質量%以下のベリリウム、0.0004質量%以上0.004質量%以下のアルミニウムの少なくとも1種類以上を含有することを特徴とする半導体素子接続用金線。
- プラセオジウムの含有量が0.0004質量%以上0.0038質量%以下の範囲であり、さらに、0.0006質量%以上0.005質量%以下のカルシウム、0.0004質量%以上0.0015質量%以下のセリウム、0.0005質量%以上0.0033質量%以下のネオジウム、0.0004質量%以上0.0033質量%以下のサマリウム、0.0004質量%以上0.0008質量%以下のランタン、0.0004質量%以上0.002質量%以下のユーロピウムの少なくとも1種類以上を含有し、さらに、0.0002質量%以上0.0009質量%以下のベリリウム、0.0005質量%以上0.003質量%以下のアルミニウムの少なくとも1種類以上を含有することを特徴とする半導体素子接続用金線。
- 金線内の任意の断面において、長径0.5μm以上の第二相の密度が10個/mm2以下であることを特徴とする請求項1に記載の半導体素子接続用金線。
- プラセオジウムの含有量が、質量比でカルシウムと希土類元素(但し、請求項2で規定するもの。)の総含有量の15%以上である請求項2に記載の半導体素子接続用金線。
- プラセオジウム、セリウム、ネオジウム、サマリウム、ランタン、ユーロピウム以外の希土類元素の含有量が0.0005質量%以下である請求項1〜4のいずれかに記載の半導体素子接続用金線。
- 0.0003質量%以上0.006質量%以下のインジウムを含有する請求項1〜5のいずれかに記載の半導体素子接続用金線。
- 不可避的不純物として、ケイ素、鉛、リチウム、ナトリウムが0.0014質量%以下である請求項1〜6のいずれかに記載の半導体素子接続用金線。
- 破断強度が210MPa以上である請求項1〜7のいずれかに記載の半導体素子接続用金線。
- 鋳造状態のインゴットからの断面減少率が98%以上である請求項1〜8のいずれかに記載の半導体素子接続用金線。
- 前記インゴットが一方向凝固法で得られたインゴットである請求項9に記載の半導体素子接続用金線。
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JP2006001174A JP5311715B2 (ja) | 2005-01-24 | 2006-01-06 | 半導体素子接続用金線 |
US11/795,921 US7830008B2 (en) | 2005-01-24 | 2006-01-24 | Gold wire for connecting semiconductor chip |
PCT/JP2006/301384 WO2006078076A1 (ja) | 2005-01-24 | 2006-01-24 | 半導体素子接続用金線 |
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JP2013188888A (ja) * | 2012-03-12 | 2013-09-26 | Omron Corp | シール性を有する金属インサート成形品、当該金属インサート成形品を備えたシール性を有する電子部品、およびシール性を有する金属インサート成形品の製造方法 |
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JPS58154242A (ja) | 1982-03-10 | 1983-09-13 | Mitsubishi Metal Corp | 半導体素子ボンデイング用金合金細線 |
JPS5896741A (ja) * | 1981-12-04 | 1983-06-08 | Mitsubishi Metal Corp | 半導体素子結線用高張力au合金細線 |
JP2621288B2 (ja) * | 1988-02-02 | 1997-06-18 | 三菱マテリアル株式会社 | 半導体素子ボンディング用Au合金極細線 |
JP2661247B2 (ja) | 1989-03-22 | 1997-10-08 | 三菱マテリアル株式会社 | 半導体素子ボンディング用金合金細線 |
JP2773202B2 (ja) | 1989-03-24 | 1998-07-09 | 三菱マテリアル株式会社 | 半導体素子ボンディング用Au合金極細線 |
JP2680414B2 (ja) | 1989-04-28 | 1997-11-19 | 田中電子工業株式会社 | 半導体素子のボンディング用金線 |
JP2814660B2 (ja) | 1990-03-06 | 1998-10-27 | 三菱マテリアル株式会社 | 半導体装置のボンディング用金合金線 |
JP2766706B2 (ja) | 1990-03-30 | 1998-06-18 | 住友金属鉱山株式会社 | ボンデイングワイヤー |
JPH04284821A (ja) | 1991-03-14 | 1992-10-09 | Matsushita Refrig Co Ltd | 冷蔵庫の脱臭装置 |
JPH07335686A (ja) * | 1994-06-09 | 1995-12-22 | Nippon Steel Corp | ボンディング用金合金細線 |
US6165627A (en) * | 1995-01-23 | 2000-12-26 | Sumitomo Electric Industries, Ltd. | Iron alloy wire and manufacturing method |
JP3337049B2 (ja) * | 1995-05-17 | 2002-10-21 | 田中電子工業株式会社 | ボンディング用金線 |
JP3550812B2 (ja) * | 1995-07-18 | 2004-08-04 | 住友金属鉱山株式会社 | ボンディングワイヤ |
JP3500518B2 (ja) * | 1995-09-06 | 2004-02-23 | 田中電子工業株式会社 | 金合金極細線の製造方法 |
EP0890987B1 (de) * | 1997-07-07 | 2003-03-05 | W.C. Heraeus GmbH & Co. KG | Feinstdraht aus einer Goldlegierung, Verfahren zu seiner Herstellung und seine Verwendung |
JP4318587B2 (ja) * | 2003-05-30 | 2009-08-26 | 住友軽金属工業株式会社 | 平版印刷版用アルミニウム合金板 |
-
2006
- 2006-01-06 JP JP2006001174A patent/JP5311715B2/ja active Active
- 2006-01-24 WO PCT/JP2006/301384 patent/WO2006078076A1/ja not_active Application Discontinuation
- 2006-01-24 US US11/795,921 patent/US7830008B2/en active Active
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JP2006229202A (ja) | 2006-08-31 |
US7830008B2 (en) | 2010-11-09 |
US20080105975A1 (en) | 2008-05-08 |
WO2006078076A1 (ja) | 2006-07-27 |
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