JP4862944B2 - 回路接続材料 - Google Patents
回路接続材料 Download PDFInfo
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- JP4862944B2 JP4862944B2 JP2009524247A JP2009524247A JP4862944B2 JP 4862944 B2 JP4862944 B2 JP 4862944B2 JP 2009524247 A JP2009524247 A JP 2009524247A JP 2009524247 A JP2009524247 A JP 2009524247A JP 4862944 B2 JP4862944 B2 JP 4862944B2
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- circuit
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- anisotropic conductive
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- JUIBLDFFVYKUAC-UHFFFAOYSA-N [5-(2-ethylhexanoylperoxy)-2,5-dimethylhexan-2-yl] 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C(CC)CCCC JUIBLDFFVYKUAC-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
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- MHCLJIVVJQQNKQ-UHFFFAOYSA-N ethyl carbamate;2-methylprop-2-enoic acid Chemical compound CCOC(N)=O.CC(=C)C(O)=O MHCLJIVVJQQNKQ-UHFFFAOYSA-N 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
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- 125000001624 naphthyl group Chemical group 0.000 description 1
- XNTUJOTWIMFEQS-UHFFFAOYSA-N octadecanoyl octadecaneperoxoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCCCCCCCC XNTUJOTWIMFEQS-UHFFFAOYSA-N 0.000 description 1
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 description 1
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- 239000013034 phenoxy resin Substances 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
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- 229920000768 polyamine Chemical class 0.000 description 1
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- POSICDHOUBKJKP-UHFFFAOYSA-N prop-2-enoxybenzene Chemical compound C=CCOC1=CC=CC=C1 POSICDHOUBKJKP-UHFFFAOYSA-N 0.000 description 1
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- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 description 1
- YPVDWEHVCUBACK-UHFFFAOYSA-N propoxycarbonyloxy propyl carbonate Chemical compound CCCOC(=O)OOC(=O)OCCC YPVDWEHVCUBACK-UHFFFAOYSA-N 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 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
- 239000010969 white metal Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
-
- 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
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- 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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/017—Antistatic agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1189—Pressing leads, bumps or a die through an insulating layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combinations Of Printed Boards (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
すなわち、異方導電接着剤層及び絶縁性接着剤層のそれぞれの接着面を、全面ITOコートガラス基板のITOコート面に、70℃、1MPaで2秒間加熱加圧して転写する。さらに2.5mm幅に切断した日東電工製テープを転写した接着剤上に重なるように貼り合わせ、張り合わせたテープを転写した接着剤ごと剥離速度50mm/分で90度剥離することにより測定することができる力を密着力という。
a≧b …(1)
a≧b …(1)
重量平均分子量800のポリカプロラクトンジオール400質量部と、2−ヒドロキシプロピルアクリレート131質量部、触媒としてジブチル錫ジラウレート0.5質量部、及び重合禁止剤としてハイドロキノンモノメチルエーテル1.0質量部を攪拌しながら50℃に加熱して混合した。次いで、イソホロンジイソシアネート222質量部を滴下し更に攪拌しながら80℃に昇温してウレタン化反応を行った。イソシアネート基の反応率が99%以上になったことを確認後、反応温度を下げてウレタンアクリレートAを得た。
ジカルボン酸にテレフタル酸、ジオールにプロピレングリコール、イソシアネートに4,4’−ジフェニルメタンジイソシアネートを用い、テレフタル酸/プロピレングリコール/4,4’−ジフェニルメタンジイソシアネートのモル比が1.0/1.3/0.25及び1.0/2.0/0.25となる2種類のポリエステルウレタン樹脂A、Bを調製した。
上記ポリエステルウレタン樹脂をメチルエチルケトンに20重量%となるように溶解した。上記ポリエステルウレタン樹脂のメチルエチルケトン溶液を用いて、厚み80μmの片面を表面処理したPETフィルムに塗工装置を用いて塗布し、70℃、10分の熱風乾燥により、厚みが35μmのフィルムを作成し、広域動的粘弾性測定装置にて引っ張り荷重5g、周波数10Hzにて弾性率の温度依存性を測定した。そこから得られたポリエステルウレタン樹脂のガラス転移温度はAが105℃、Bが70℃であった。
ラジカル重合性物質として、上記ウレタンアクリレートA20質量部、さらにイソシアヌレート型アクリレート(製品名:M−325、東亞合成社製)15質量部、ジメチロールトリシクロデカンジアクリレート(製品名:DCP−A、共栄社化学社製)5質量部、2−メタクリロイルオキシエチルアシッドフォスフェート(製品名:P−2M、共栄社化学社製)3質量部、遊離ラジカル発生剤としてベンゾイルパーオキサイド(製品名:ナイパーBMT−K40、日本油脂製)4質量部、及び上記ポリエステルウレタン樹脂Aの20%メチルエチルケトン溶液60質量部を混合・攪拌しバインダ樹脂とした。さらに、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0.04μmの金層を設けた平均粒径4μmの導電粒子(10%圧縮弾性率(K値):410Kgf/mm2)を、上記バインダ樹脂に対して3体積%分散させた。この混合物を、塗工装置を用いて厚み50μmの片面を表面処理したPETフィルムに塗布し、70℃、10分の熱風乾燥により、接着剤層の厚みが4μmの異方導電接着剤層A(幅15cm、長さ70m)を得た。
次いで、ラジカル重合性物質として、上記ウレタンアクリレート20質量部、ビス(アクリロキシエチル)イソシアヌレート(製品名:M−325、東亞合成社製)20質量部、ジメチロールトリシクロデカンジアクリレート(製品名:DCP−A、共栄社化学社製)10質量部、2−メタクリロイルオキシエチルアシッドフォスフェート(製品名:P−2M、共栄社化学社製)3質量部、遊離ラジカル発生剤としてベンゾイルパーオキサイド(製品名:ナイパーBMT−K、日本油脂製)4質量部、及び上記ポリエステルウレタン樹脂Bをトルエン/メチルエチルケトン=50/50の混合溶剤に溶解して得られた23重量%の溶液50質量部を混合・攪拌しバインダ樹脂とした。これを、塗工装置を用いて厚み50μmの片面を表面処理したPETフィルムに塗布し、70℃、10分の熱風乾燥により、厚みが10μmの接着剤層B(幅15cm、長さ70m)を得た。得られた接着剤層A、Bを接着剤が向き合う方向に合わせ、ラミネーター(Dupont社製RISTON、モデル;HRL、ロール圧力はバネ加重のみ、ロール温度40℃、速度50cm/分)を用いてラミネートした。異方導電接着剤層A側のPETを剥離し、厚み14μmの異方導電接着剤(幅15cm、長さ60m)を得た。
得られた異方導電接着剤を1.5mm幅に裁断し、内径40mm、外径48mmのプラスチック製リールの側面(厚み1.7mm)に接着フィルム面を内側にして50m巻きつけ、テープ状の回路接続材料を得た。一方、塗工装置にて作製したラミネート前の異方導電接着剤層Aと接着剤層Bのそれぞれを2.5mm幅に裁断し、内径40mm、外径48mmのプラスチック製リールの側面(厚み1.7mm)に接着フィルム面を内側にして50m巻きつけ、テープ状の接着剤を得た。
導電粒子の粒径、各接着剤層の厚みを表1に示すように変化させたこと以外は、実施例1と同様にして、テープ状の回路接続材料及びテープ状の接着剤を作製した。
接着剤組成を表2に示すように変化させ、接着剤層Aと異方導電接着剤層Bのガラス密着力を逆転させた以外は、実施例1と同様にして、テープ状の回路接続材料及びテープ状の接着剤を作製した。
導電粒子の粒径、異方導電接着剤層Aの厚みを表2に示すように変化させ、単層とした以外は、実施例1と同様にして、テープ状の回路接続材料及びテープ状の接着剤を作製した。
実施例、比較例で得られたテープ状の回路接続材料(幅1.5mm、長さ3cm)の接着面を、70℃、1MPaで2秒間加熱加圧して厚み0.7mmのITOコートガラス基板(15Ω/□)上に転写し、PETフィルムを剥離した。ついで、ピッチ50μm、厚み8μmのすずめっき銅回路を600本有するフレキシブル回路板(FPC)を転写した接着剤上に置き、24℃、0.5MPaで1秒間加圧して仮固定した。このFPCが接着剤によって仮固定されたガラス基板を本圧着装置に設置し、200μm厚みのシリコーンゴムをクッション材とし、フレキシブル配線板側から、ヒートツールによって170℃、3MPaで6秒間加熱加圧して幅1.5mmにわたり接続し、回路部材の接続構造を得た。
この回路部材の接続構造の接続部を含むFPCの隣接回路間の抵抗値をマルチメータ(装置名:TR6845、アドバンテスト社製)で測定した。抵抗値は隣接回路間の抵抗40点を測定し、平均値を求めた。得られた結果を表3、4に示す。
実施例、比較例で得られたテープ状の回路接着材料(幅1.5mm、長さ3cm)の接着面を、70℃、1MPaで2秒間加熱加圧して厚み0.7mmのITOコートガラス基板(15Ω/□)上に転写し、PETフィルムを剥離した。ついで、ピッチ50μm、厚み8μmのすずめっき銅回路を600本有するフレキシブル回路板(FPC)を転写した接着剤上に置き、24℃、0.5MPaで1秒間加圧して仮固定した。このFPCが接着剤によって仮固定されたガラス基板を本圧着装置に設置し、200μm厚みのシリコーンゴムをクッション材とし、フレキシブル配線板側から、ヒートツールによって170℃、3MPaで6秒間加熱加圧して幅1.5mmにわたり接続し、回路部材の接続構造を得た。
この回路部材の接続構造について、90度剥離、剥離速度50mm/分で接着力測定を行った。得られた結果を表3、4に示す。
実施例、比較例で得られたテープ状の回路接着材料(幅1.5mm、長さ3cm)の接着面を、70℃、1MPaで2秒間加熱加圧して厚み0.7mmのAlコートガラス基板(10Ω/□)上に転写し、PETフィルムを剥離した。ついで、ピッチ50μm、厚み8μmのすずめっき銅回路を600本有するフレキシブル回路板(FPC)を転写した接着剤上に置き、24℃、0.5MPaで1秒間加圧して仮固定した。このFPCが接着剤によって仮固定されたガラス基板を本圧着装置に設置し、200μm厚みのシリコーンゴムをクッション材とし、フレキシブル配線板側から、ヒートツールによって170℃、3MPaで6秒間加熱加圧して幅1.5mmにわたり接続し、回路部材の接続構造を得た。
この回路部材の接続構造について、オリンパス(株)製BH3−MJL液晶パネル検査用顕微鏡を用い、ガラス基板側からノマルスキー微分干渉観察により1電極当たりの圧痕の数を20電極分測定し平均値を算出した。一方、接着剤中の単位面積当たりの導電粒子個数は、オリンパス(株)製BH3−MJL液晶パネル検査用顕微鏡にて計測した。得られた結果から、次式を用いて導電粒子捕捉率を算出した。得られた値を表3、4に示す。
導電粒子捕捉率=(電極上導電粒子数[個])×100/{(接着剤中単位面積当たり導電粒子数[個/mm2])×(電極1本当たりの接続面積[mm2])}
実施例、比較例で得られたテープ状の回路接着材料、あるいはテープ状の接着剤(ラミネート前の異方導電接着剤層Aと接着剤層B)(幅2.5mm、長さ3cm)の接着面を、全面ITOコートガラス基板(15Ω/□)のITOコート面に、70℃、1MPaで2秒間加熱加圧して転写した。さらに2.5mm幅に切断した日東電工製テープ(NITTO TAPE)を転写した接着剤上に重なるように貼り合わせ、貼り合わせたテープを転写した接着剤ごと剥離速度50mm/分で90度剥離することにより接着剤のガラスに対する密着力測定を行った。得られた結果を表3、4に示す。
Claims (4)
- 相対峙する回路電極間に介在され、相対向する回路電極を加圧し加圧方向の電極間を電気的に接続する回路接続材料であって、
導電粒子を分散した異方導電接着剤層と絶縁性接着剤層とが積層された構成を有し、
前記異方導電接着剤層及び前記絶縁性接着剤層は、加熱若しくは光によって遊離ラジカルを発生する硬化剤及びラジカル重合性物質からなる接着剤を接着剤成分として含有し、
前記絶縁性接着剤層の接着面を、全面ITOコートガラス基板のITOコート面に、70℃、1MPaで2秒間加熱加圧して転写したときの前記ITOコート面に対する前記絶縁性接着剤層の密着力が、前記異方導電接着剤層の接着面を、全面ITOコートガラス基板のITOコート面に、70℃、1MPaで2秒間加熱加圧して転写したときの前記ITOコート面に対する前記異方導電接着剤層の密着力よりも大きい回路接続材料。 - 前記導電粒子の平均粒径は、2〜6μmである、請求項1に記載の回路接続材料。
- 前記異方導電接着剤層の厚みは、前記導電粒子の平均粒径に対して25〜75%である、請求項1又は2に記載の回路接続材料。
- 前記異方導電接着剤層の厚みと前記絶縁性接着剤層の厚みとの比が、1:1〜1:6である、請求項1〜3のいずれか一項に記載の回路接続材料。
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JP5695881B2 (ja) * | 2010-10-28 | 2015-04-08 | デクセリアルズ株式会社 | 電子部品の接続方法及び接続構造体 |
JP5559723B2 (ja) * | 2011-02-23 | 2014-07-23 | 積水化学工業株式会社 | 接続構造体の製造方法 |
JP2012057161A (ja) * | 2011-09-21 | 2012-03-22 | Hitachi Chem Co Ltd | 回路接続用接着フィルム及び回路接続構造体 |
KR102345819B1 (ko) | 2012-08-24 | 2022-01-03 | 데쿠세리아루즈 가부시키가이샤 | 이방성 도전 필름 및 그의 제조 방법 |
CN107254263A (zh) | 2012-08-24 | 2017-10-17 | 迪睿合电子材料有限公司 | 各向异性导电膜的制造方法和各向异性导电膜 |
JP6321910B2 (ja) * | 2013-03-26 | 2018-05-09 | 日東電工株式会社 | 封止シート、半導体装置の製造方法及び封止シート付き基板 |
JP6307308B2 (ja) * | 2014-03-06 | 2018-04-04 | デクセリアルズ株式会社 | 接続構造体の製造方法、及び回路接続材料 |
KR102422077B1 (ko) | 2015-11-05 | 2022-07-19 | 삼성디스플레이 주식회사 | 도전성 접착 필름 및 이를 이용한 전자기기의 접착 방법 |
CN114196334A (zh) * | 2016-01-29 | 2022-03-18 | 昭和电工材料株式会社 | 粘接剂带及其制造方法、以及粘接剂膜用卷轴 |
US9997846B1 (en) | 2017-02-21 | 2018-06-12 | Ford Global Technologies, Llc | Window electrical terminals |
JP7210846B2 (ja) * | 2017-09-11 | 2023-01-24 | 株式会社レゾナック | 回路接続用接着剤フィルム及びその製造方法、回路接続構造体の製造方法、並びに、接着剤フィルム収容セット |
TWI645973B (zh) * | 2017-12-15 | 2019-01-01 | 律勝科技股份有限公司 | 聚醯亞胺薄化軟性基板及其製造方法 |
US11224131B2 (en) * | 2018-04-04 | 2022-01-11 | Lenovo (Singapore) Pte. Ltd. | Systems and methods for surface mounting cable connections |
JP2020095941A (ja) * | 2018-10-03 | 2020-06-18 | デクセリアルズ株式会社 | 異方性導電フィルム、接続構造体、接続構造体の製造方法 |
JP6898413B2 (ja) * | 2018-10-31 | 2021-07-07 | デクセリアルズ株式会社 | 接続体の製造方法、異方性接合フィルム、接続体 |
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