JP6044261B2 - 異方導電性接着剤組成物 - Google Patents
異方導電性接着剤組成物 Download PDFInfo
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- JP6044261B2 JP6044261B2 JP2012232971A JP2012232971A JP6044261B2 JP 6044261 B2 JP6044261 B2 JP 6044261B2 JP 2012232971 A JP2012232971 A JP 2012232971A JP 2012232971 A JP2012232971 A JP 2012232971A JP 6044261 B2 JP6044261 B2 JP 6044261B2
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- circuit
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- conductive adhesive
- anisotropic conductive
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- 230000001070 adhesive effect Effects 0.000 title claims description 167
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- -1 sulfonium salt compound Chemical class 0.000 claims description 82
- 239000004065 semiconductor Substances 0.000 claims description 60
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- 239000002245 particle Substances 0.000 claims description 34
- 125000000217 alkyl group Chemical group 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000004593 Epoxy Substances 0.000 claims description 25
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 125000003118 aryl group Chemical group 0.000 claims description 14
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- 125000005002 aryl methyl group Chemical group 0.000 claims description 10
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- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000113 differential scanning calorimetry Methods 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
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- 125000004429 atom Chemical group 0.000 claims description 2
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- 125000005004 perfluoroethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 35
- JFZKOODUSFUFIZ-UHFFFAOYSA-N trifluoro phosphate Chemical compound FOP(=O)(OF)OF JFZKOODUSFUFIZ-UHFFFAOYSA-N 0.000 description 34
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- UQWLFOMXECTXNQ-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)methylsulfonyl-trifluoromethane Chemical compound FC(F)(F)S(=O)(=O)[C-](S(=O)(=O)C(F)(F)F)S(=O)(=O)C(F)(F)F UQWLFOMXECTXNQ-UHFFFAOYSA-N 0.000 description 10
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- 125000002091 cationic group Chemical group 0.000 description 8
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- 238000013112 stability test Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 3
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- 238000009835 boiling Methods 0.000 description 3
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- LGRLWUINFJPLSH-UHFFFAOYSA-N methanide Chemical compound [CH3-] LGRLWUINFJPLSH-UHFFFAOYSA-N 0.000 description 3
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- 125000003107 substituted aryl group Chemical group 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- BGYBONWLWSMGNV-UHFFFAOYSA-N 1,4,7,10,13,16,19,22-octaoxacyclotetracosane Chemical compound C1COCCOCCOCCOCCOCCOCCOCCO1 BGYBONWLWSMGNV-UHFFFAOYSA-N 0.000 description 2
- MUEZFYHTEVXURH-UHFFFAOYSA-N 1-[4-(benzylsulfanylmethyl)phenyl]ethanone Chemical compound C1=CC(C(=O)C)=CC=C1CSCC1=CC=CC=C1 MUEZFYHTEVXURH-UHFFFAOYSA-N 0.000 description 2
- XQQZRZQVBFHBHL-UHFFFAOYSA-N 12-crown-4 Chemical compound C1COCCOCCOCCO1 XQQZRZQVBFHBHL-UHFFFAOYSA-N 0.000 description 2
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- DSFHXKRFDFROER-UHFFFAOYSA-N 2,5,8,11,14,17-hexaoxabicyclo[16.4.0]docosa-1(22),18,20-triene Chemical compound O1CCOCCOCCOCCOCCOC2=CC=CC=C21 DSFHXKRFDFROER-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical group C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
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- 125000003545 alkoxy group Chemical group 0.000 description 2
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- HWRZOQXZPYBNBG-UHFFFAOYSA-O benzyl-[(4-methoxyphenyl)methyl]sulfanium bis(trifluoromethylsulfonyl)methylsulfonyl-trifluoromethane Chemical compound [C-](S(=O)(=O)C(F)(F)F)(S(=O)(=O)C(F)(F)F)S(=O)(=O)C(F)(F)F.C1(=CC=CC=C1)C[SH+]CC1=CC=C(C=C1)OC HWRZOQXZPYBNBG-UHFFFAOYSA-O 0.000 description 2
- KFHQCRVFPNPTCL-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)methylsulfonyl-trifluoromethane dimethyl(3-phenylprop-2-enyl)sulfanium Chemical compound [C-](S(=O)(=O)C(F)(F)F)(S(=O)(=O)C(F)(F)F)S(=O)(=O)C(F)(F)F.C(C=CC1=CC=CC=C1)[S+](C)C KFHQCRVFPNPTCL-UHFFFAOYSA-N 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- DIBXWJZTGKWXQZ-UHFFFAOYSA-N but-2-enyl(dimethyl)sulfanium Chemical compound CC=CC[S+](C)C DIBXWJZTGKWXQZ-UHFFFAOYSA-N 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- IAZPIYCBYSLQIY-UHFFFAOYSA-N dimethyl(3-phenylprop-2-enyl)sulfanium Chemical compound C[S+](C)CC=CC1=CC=CC=C1 IAZPIYCBYSLQIY-UHFFFAOYSA-N 0.000 description 2
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
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- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
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- PQJZHMCWDKOPQG-UHFFFAOYSA-N 2-anilino-2-oxoacetic acid Chemical compound OC(=O)C(=O)NC1=CC=CC=C1 PQJZHMCWDKOPQG-UHFFFAOYSA-N 0.000 description 1
- TZLVUWBGUNVFES-UHFFFAOYSA-N 2-ethyl-5-methylpyrazol-3-amine Chemical compound CCN1N=C(C)C=C1N TZLVUWBGUNVFES-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 125000006678 phenoxycarbonyl group Chemical group 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002454 poly(glycidyl methacrylate) polymer Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000003017 thermal stabilizer Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical class S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
- H01L2224/831—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus
- H01L2224/83101—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector the layer connector being supplied to the parts to be connected in the bonding apparatus as prepeg comprising a layer connector, e.g. provided in an insulating plate member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/06—Polymers
- H01L2924/078—Adhesive characteristics other than chemical
- H01L2924/0781—Adhesive characteristics other than chemical being an ohmic electrical conductor
- H01L2924/07811—Extrinsic, i.e. with electrical conductive fillers
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Description
[式(IX)中、Raは水素、メチル基、アセチル基、メトキシカルボニル基、エトキシカルボニル基、ベンジルオキシカルボニル基、ベンゾイル基、フェノキシカルボニル基、9−フルオレニルメトキシカルボニル基のいずれかを、Rb、Rcは独立して水素、ハロゲン、C1〜C4のアルキル基のいずれかを、RdはC1〜C4のアルキル基を、Qはo−ニトロベンジル基、m−ニトロベンジル基、ジニトロベンジル基、トリニトロベンジル基、α−ナフチルメチル基、β−ナフチルメチル基のいずれかを示す。XはSbF6、AsF6、PF6、BF4のいずれかである。]
[式(X)中、Reは、水素原子、アルキル基、ハロゲン原子、カルボキシル基又はアルコキシカルボニル基を表し、Rfはアルキル基を表し、Rgは置換されていてもよいフェニル基又は置換されていてもよいナフチル基を表し、Xは、SbF6、AsF6、PF6又はBF4を表す。]
[式中、R1は置換若しくは未置換のアリールメチル基、又は置換若しくは未置換のアリル基を示し、R2及びR3は、それぞれ独立に、アルキル基、又は置換若しくは未置換のアリール基を示し、Y−は[P(R4)a(F)6−a]−(式中、R4は水素原子の少なくとも一部がフッ素原子で置換されているアルキル基を示し、aは1〜6の整数を示す。aが2以上の整数である場合、複数存在するR4は、互いに同一であっても異なっていてもよい。)、又は[C((R5)SO2)3]−(式中、R5は水素原子の少なくとも一部がフッ素原子で置換されているアルキル基を示し、複数存在するR5は、互いに同一であっても異なっていてもよい。)を示す。ただし、R2及びR3は一緒になって環を形成していてもよく、R1が置換又は未置換のアリールメチル基である場合には、R2及びR3の少なくとも一方が置換又は未置換のアリール基であり、R1が置換又は未置換のアリル基である場合には、R2及びR3はアルキル基、又はR2及びR3が一緒になって形成された環である。]
(2)上記(A)成分として、下記一般式(II)で表されるスルホニウム塩化合物を含有する、(1)に記載の異方導電性接着剤組成物。
[式中、Ar1及びAr2は、それぞれ独立に、置換又は未置換のアリール基を示し、Y−は上記と同義である。]
(3)上記(A)成分として、下記一般式(III)で表されるスルホニウム塩化合物を含有する、(2)に記載の異方導電性接着剤組成物。
[式中、Y−は上記と同義である。]
(4)上記(A)成分として、下記一般式(IV)で表されるスルホニウム塩化合物を含有する、(1)に記載の異方導電性接着剤組成物。
[式中、A1及びA2は、それぞれ独立にアルキル基を示し、R6、R7及びR8は、それぞれ独立に、水素原子、アルキル基、又は置換若しくは未置換のアリール基を示し、Y−は上記と同義である。ただし、A1及びA2は一緒になって環を形成していてもよい。]
(5)上記(A)成分として、一般式(V)、(VI)、(VII)又は(VIII)で表されるスルホニウム塩化合物を含有する、(4)に記載の異方導電性接着剤組成物。
[式中、Y−は上記と同義である。]
(6)上記(A)成分として、グリシジルエーテル型エポキシ化合物との混合物についての示差走査熱量測定において、ピーク温度40〜150℃を与えるスルホニウム塩化合物を含有する、(1)〜(5)のいずれかに記載の異方導電性接着剤組成物。
(7)上記(B)成分として、エポキシ化合物、オキセタン化合物及びビニルエーテル化合物からなる群より選ばれる少なくとも一種を含有する、(1)〜(6)のいずれかに記載の異方導電性接着剤組成物。
(8)(D)フィルム形成性ポリマーを更に含有する、(1)〜(7)のいずれかに記載の異方導電性接着剤組成物。
(9)回路接続用接着剤として使用される、(1)〜(8)のいずれかに記載の異方導電性接着剤組成物。
(10)加熱により硬化される、(1)〜(9)のいずれかに記載の異方導電性接着剤組成物。
(11)(1)〜(10)のいずれかに記載の異方導電性接着剤組成物をフィルム状にしてなる、フィルム状接着剤。
(12)第一の回路電極を有する第一の回路部材と、第二の回路電極を有する第二の回路部材と、上記第一の回路部材及び上記第二の回路部材の間に配置され、上記第一の回路電極と上記第二の回路電極とを電気的に接続する回路接続部材と、を備え、上記回路接続部材が(1)〜(10)のいずれかに記載の異方導電性接着剤組成物の硬化物を含む、接続構造体。
(13)第一の回路電極を有する第一の回路部材と、第二の回路電極を有する第二の回路部材との間に(1)〜(10)のいずれかに記載の異方導電性接着剤組成物を配置し、上記異方導電性接着剤組成物を介して、上記第一の回路部材及び上記第二の回路部材を加熱及び加圧して、上記第一の回路電極及び上記第二の回路電極を電気的に接続する工程を備える、接続構造体の製造方法。
(14)半導体素子と、回路パターンを有する基板と、上記半導体素子及び上記基板の間に配置され、上記半導体素子と上記回路パターンとを電気的に接続する半導体素子接続部材と、を備え、上記半導体素子接続部材が(1)〜(10)のいずれかに記載の異方導電性接着剤組成物の硬化物を含む、半導体装置。
本実施形態に係る異方導電性接着剤組成物(以下、単に「接着剤組成物」ともいう。)は、(A)一般式(I)で表されるスルホニウム塩化合物(以下、場合により「(A)成分」という。)と、(B)カチオン重合性物質(以下、場合により「(B)成分」という。)と、(C)導電粒子と、を含有する。
(測定条件)
装置:東ソー株式会社製 GPC−8020
検出器:東ソー株式会社製 RI−8020
カラム:日立化成工業株式会社製 Gelpack GL−A−160−S+GL−A150
試料濃度:120mg/3mL
溶媒:テトラヒドロフラン
注入量:60μL
圧力:2.9MPa(30kgf/cm2)
流量:1.00mL/mim
図1は、フィルム状接着剤の一実施形態を示す模式断面図である。図1に示すフィルム状接着剤1は、接着剤成分5及び導電粒子7からなる、上述の接着剤組成物をフィルム状に形成したものである。このフィルム状接着剤1によれば、取り扱いが容易であり、被着体へ容易に設置することができ、接続作業を容易に行うことができる。
図2は、接続構造体の一実施形態を示す模式断面図である。図2に示すように、本実施形態の接続構造体は、相互に対向する第一の回路部材20及び第二の回路部材30を備えており、第一の回路部材20と第二の回路部材30との間には、これらを接続する回路接続部材10が設けられている。第一の回路部材20又は第二の回路部材30は無機材料から構成されていてもよい。また、接続部材との被着面の少なくとも一部が無機材料から構成されていてもよい。
次に、上述した接続構造体の製造方法について説明する。
次に、本発明に係る半導体装置の実施形態について説明する。図4は、本発明の半導体装置の一実施形態を示す概略断面図である。図4に示すように、本実施形態の半導体装置2は、半導体素子50と、半導体素子の支持部材となる基板60とを備えており、半導体素子50及び基板60の間には、これらを電気的に接続する半導体素子接続部材80が設けられている。また、半導体素子接続部材80は基板60の主面60a上に積層され、半導体素子50は更にその半導体素子接続部材80上に積層されている。
(A)成分としてTA−60(サンアプロ株式会社製品名、α−ナフチルメチル−4−ヒドロキシフェニルメチルスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート)、(B)成分としてグリシジルエーテル型エポキシ化合物YL980(ジャパンエポキシレジン株式会社製品名、ビスフェノールA型エポキシ樹脂)を用いた。フィルム形成性ポリマーとしてフェノキシ樹脂(YP−70、東都化成株式会社製商品名)を用いた。また、ポリスチレンを核とする粒子の表面に、厚み0.2μmのニッケル層を設け、このニッケル層の外側に、厚み0.02μmの金層を設けた平均粒径3μm、比重2.5の導電粒子を作製して用いた。また、腐食防止剤として水酸化アルミニウム粉末を用いた。
(A)成分としてα−ナフチルメチル−4−ヒドロキシフェニルメチルスルホニウム トリス(トリフルオロメタンスルホニル)メチド(PMNS TFSM)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分として3−メチル−2−ブテニルテトラメチレンスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート(MBTS TFEP)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分としてシンナミルテトラメチレンスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート(CMS TFEP)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分としてSI−60(三新化学工業株式会社製品名、α−ナフチルメチル−4−ヒドロキシフェニルメチルスルホニウム ヘキサフルオロアンチモネート)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分としてCPI−100A(サンアプロ株式会社製品名、4−フェニルチオフェニルジフェニルスルホニウム ヘキサフルオロアンチモネート)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分としてCPI−200K(サンアプロ株式会社製品名、4−フェニルチオフェニルジフェニルスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分としてテトラメチレンα−ナフチルメチルスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート(MPS TFEP)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。
(A)成分として4−ヒドロキシフェニルメチルシンナミルスルホニウム トリス(パーフルオロエチル)トリフルオロホスフェート(PMCS TFEP)を用いた以外は、実施例1と同様な方法でフィルム状接着剤を得た。表1に各成分の混合比を示す。なお、表1で混合比は質量部で示す。
実施例、参考例及び比較例で得たフィルム状接着剤の示差走査熱量測定を行い、発熱ピークの有無を調べた。
比較例2及び3で得たフィルム状接着剤において、発熱ピークは認められなかった。また、比較例5で得たフィルム状接着剤は測定前に硬化した。実施例1及び2、参考例3及び4並びに比較例1及び4で得たフィルム状接着剤は発熱ピークを与えた。その時の温度を表3に示す。
実施例1及び2、参考例3及び4並びに比較例1及び4のフィルム状接着剤をホットプレート上で10秒間、100〜160℃でそれぞれ加熱して硬化させた。赤外線吸収スペクトルにより、加熱前後のエポキシ基のシグナル強度の面積値の差を、加熱前のシグナル強度の面積値で除したものを硬化率として求めた。結果を図5に示す。
実施例1及び2、参考例3及び4並びに比較例1〜5のフィルム状接着剤を40℃の恒温装置に5日間放置した。赤外線吸収スペクトルにより、放置後の硬化率を求めた。結果を表3に示す。
実施例1及び2、参考例3及び4並びに比較例1〜5のフィルム状接着剤を、純水で100倍に希釈した後、121℃/100%RHの環境で15時間加熱して抽出した。抽出水をろ過後に陰イオンクロマトグラフ(DIONEX社製IC−20)でフッ素イオン濃度を測定した。結果を表3に示す。
ガラス基板(コーニング#1737、外形38mm×28mm、厚さ0.5mm、表面にITO(酸化インジウム錫)配線パターン(パターン幅50μm、ピッチ50μm)を有するもの)に、2×20mmの大きさで実施例1及び2、参考例3及び4並びに比較例1〜5の各フィルム状接着剤を、PET樹脂フィルムから転写した。ICチップ(外形1.7mm×17.2mm、厚さ0.55mm、バンプの大きさ50μm×50μm、バンプのピッチ50μm)を表4に示す実装条件(温度と時間)で、80MPa(バンプ面積換算)荷重をかけて加熱加圧して実装した。また、保存安定性試験後のフィルム状接着剤も同様に実装した。
上記のようにして作製した接続構造体の隣接回路間の抵抗値(14端子測定した中の最大値)を測定した。得られた結果を表4に示す。
上記のようにして作製した接続構造体(保存安定性試験を行っていないフィルム状接着剤を用いたもの)を、85℃85%RHの環境で24時間処理した後の、ITO配線の外観を観察した。得られた結果を表4に示す。
Claims (12)
- (A)下記一般式(I)で表されるスルホニウム塩化合物と、
(B)カチオン重合性物質と、
(C)導電粒子と、
を含有してなる異方導電性接着剤組成物。
- 前記(A)成分として、グリシジルエーテル型エポキシ化合物との混合物についての示差走査熱量測定において、ピーク温度40〜150℃を与えるスルホニウム塩化合物を含有する、請求項1〜3のいずれか一項に記載の異方導電性接着剤組成物。
- 前記(B)成分として、エポキシ化合物、オキセタン化合物及びビニルエーテル化合物からなる群より選ばれる少なくとも一種を含有する、請求項1〜4のいずれか一項に記載の異方導電性接着剤組成物。
- (D)フィルム形成性ポリマーを更に含有する、請求項1〜5のいずれか一項に記載の異方導電性接着剤組成物。
- 回路接続用接着剤として使用される、請求項1〜6のいずれか一項に記載の異方導電性接着剤組成物。
- 加熱により硬化される、請求項1〜7のいずれか一項に記載の異方導電性接着剤組成物。
- 請求項1〜8のいずれか一項に記載の異方導電性接着剤組成物をフィルム状にしてなる、フィルム状接着剤。
- 第一の回路電極を有する第一の回路部材と、第二の回路電極を有する第二の回路部材と、前記第一の回路部材及び前記第二の回路部材の間に配置され、前記第一の回路電極と前記第二の回路電極とを電気的に接続する回路接続部材と、を備え、
前記回路接続部材が請求項1〜8のいずれか一項に記載の異方導電性接着剤組成物の硬化物を含む、接続構造体。 - 第一の回路電極を有する第一の回路部材と、第二の回路電極を有する第二の回路部材との間に請求項1〜8のいずれか一項に記載の異方導電性接着剤組成物を配置し、前記異方導電性接着剤組成物を介して、前記第一の回路部材及び前記第二の回路部材を加熱及び加圧して、前記第一の回路電極及び前記第二の回路電極を電気的に接続する工程を備える、接続構造体の製造方法。
- 半導体素子と、回路パターンを有する基板と、前記半導体素子及び前記基板の間に配置され、前記半導体素子と前記回路パターンとを電気的に接続する半導体素子接続部材と、を備え、
前記半導体素子接続部材が請求項1〜8のいずれか一項に記載の異方導電性接着剤組成物の硬化物を含む、半導体装置。
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