JP6061443B2 - 異方性導電接着フィルム、接続構造体及びその製造方法 - Google Patents
異方性導電接着フィルム、接続構造体及びその製造方法 Download PDFInfo
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- JP6061443B2 JP6061443B2 JP2010288005A JP2010288005A JP6061443B2 JP 6061443 B2 JP6061443 B2 JP 6061443B2 JP 2010288005 A JP2010288005 A JP 2010288005A JP 2010288005 A JP2010288005 A JP 2010288005A JP 6061443 B2 JP6061443 B2 JP 6061443B2
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- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
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- RRIWRJBSCGCBID-UHFFFAOYSA-L nickel sulfate hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-]S([O-])(=O)=O RRIWRJBSCGCBID-UHFFFAOYSA-L 0.000 description 1
- 229940116202 nickel sulfate hexahydrate Drugs 0.000 description 1
- FYWSTUCDSVYLPV-UHFFFAOYSA-N nitrooxythallium Chemical compound [Tl+].[O-][N+]([O-])=O FYWSTUCDSVYLPV-UHFFFAOYSA-N 0.000 description 1
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 229910052700 potassium Inorganic materials 0.000 description 1
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- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
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- 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
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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- 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
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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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- 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
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- 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
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- 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
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- 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
- C08K2003/0862—Nickel
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/023—Hard particles, i.e. particles in conductive adhesive at least partly penetrating an electrode
Description
(導電性粒子の調製)
表1の平均粒子径のニッケル粒子100gを、塩酸50ml/lの水溶液中で5分間攪拌した。これを濾過し、1回リパルプ水洗を施したニッケル粒子を、EDTA−4Na(10g/l)とクエン酸−2Na(10g/l)とを含む水溶液1リットル(pH6、温度60℃)が入れられた反応容器に撹拌しながら添加した。
導電性粒子5質量部に、フェノキシ樹脂(YP−50、東都化成(株))22質量部、ジシクロペンタジエンジメタクリレート(DCP、新中村化学工業(株))5質量部、ウレタンアクリレート(M−1600、東亞合成(株))10質量部、アクリルゴム(SG−80H、ナガセケムテックス(株))5質量部、リン含有メタクリレート(PM2、日本化薬(株))1質量部、ジアシルパーオキサイド系開始剤(ナイパーBW、日油(株))2質量部、及びトルエン50質量部を混合し、得られた混合物を剥離シートに乾燥厚が35μmとなるように塗布し、80℃で5分間乾燥することにより異方性導電接着フィルムを得た。
A: 接続抵抗値が2.0Ω未満の場合
B: 接続抵抗値が2.0Ω以上4.0Ω未満の場合
C: 接続抵抗値が4.0Ω以上の場合
A: 接続部の観察箇所10ヶ所中8ヶ所以上で圧痕を確認できた場合
B: 接続部の観察箇所10ヶ所中1〜7ヶ所で圧痕を確認できた場合
C: 接続部の観察箇所10ヶ所中に圧痕が確認できない場合
平均粒子径8μmのジビニルベンゼン系樹脂粒子(5g)に、パラジウム触媒を浸漬法により担持させた。次いで、この樹脂粒子に対し、硫酸ニッケル六水和物、次亜リン酸ナトリウム、クエン酸ナトリウム、トリエタノールアミン及び硝酸タリウムから調製された無電解ニッケルメッキ液(pH12、メッキ液温50℃)を用いて無電解ニッケルメッキを行い、ニッケルメッキ層(10〜20nm厚)が表面に形成されたニッケル被覆樹脂粒子を導電粒子として得た。
2 リジッド基板
3 リジッド基板の端子
4 フレキシブル基板
5 フレキシブル基板の端子
A 導電性粒子の粒径
B 端子間ギャップ
Claims (3)
- フレキシブル基板の端子とリジッド基板の端子とが、導電性粒子がバインダー樹脂組成物に分散してなる異方性導電接着フィルムを介して異方性導電接続された接続構造体において、
フレキシブル基板の端子とリジッド基板の端子との間に挟持されるべき異方性導電接着フィルムの導電性粒子が、5μm以上6μm以下の平均粒子径と、4500kgf/mm2以上6000kgf/mm2以下の圧縮硬さとを有し、且つその最大径をaとし、最小径をbとしたときに、a/bで表される導電性粒子の真球度が1.8以上2以下であり、
異方性導電接続後の導電性粒子の平均粒子径をAとし、フレキシブル基板の端子とリジッド基板の端子との間のギャップをBとしたときに100・(A−B)/Aで定義される押し込み率が57%以上93%以下となるように、導電性粒子がフレキシブル基板の端子に食い込んでいる
ことを特徴とする接続構造体。 - リジッド基板が、ITO配線、銅配線又はアルミニウム配線が形成されたガラス基板、セラミック基板又はガラスエポキシ基板から選ばれる請求項1記載の接続構造体。
- 請求項1記載の接続構造体の製造方法であって、
ITO配線、銅配線又はアルミニウム配線が形成されたガラス基板、セラミックス基板又はガラスエポキシ基板から選ばれるリジッド基板の端子上に、膜形成樹脂としてフェノキシ樹脂、エポキシ樹脂、不飽和ポリエステル樹脂、飽和ポリエステル樹脂、ウレタン樹脂、ブタジエン樹脂、ポリイミド樹脂、ポリアミド樹脂又はポリオレフィン樹脂と、硬化成分として液状エポキシ化合物あるいはアクリルモノマーと、硬化剤と、シランカップリング剤とを含有しているバインダー樹脂組成物に導電性粒子が分散してなる異方性導電接着フィルムを仮り貼りし、
その異方性導電接着フィルム上に、銅配線又はアルミニウム配線が形成されたポリイミド樹脂フィルム、ポリエステル樹脂フィルム、ポリアミド樹脂フィルム又はポリスチレン樹脂フィルムから選ばれるフレキシブル基板の端子がリジッド基板の端子に対応するように、フレキシブル基板を配置し、
異方性導電接続後の導電性粒子の平均粒子径をAとし、フレキシブル基板の端子とリジッド基板の端子との間のギャップをBとしたときに100・(A−B)/Aで定義される押し込み率が57%以上93%以下となるように、フレキシブル基板側から、加熱ボンダーで異方性導電接着フィルムを加熱加圧することにより異方性導電接続を行うことを特徴とする製造方法。
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