JP6090311B2 - 回路接続材料、回路接続構造体及び接着フィルム - Google Patents
回路接続材料、回路接続構造体及び接着フィルム Download PDFInfo
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- JP6090311B2 JP6090311B2 JP2014512528A JP2014512528A JP6090311B2 JP 6090311 B2 JP6090311 B2 JP 6090311B2 JP 2014512528 A JP2014512528 A JP 2014512528A JP 2014512528 A JP2014512528 A JP 2014512528A JP 6090311 B2 JP6090311 B2 JP 6090311B2
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Images
Classifications
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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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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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
- C09J201/00—Adhesives based on unspecified macromolecular compounds
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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
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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
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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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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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
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- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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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
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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
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- 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
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- H—ELECTRICITY
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- H01L24/80—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
- H01L24/83—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
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- H—ELECTRICITY
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- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
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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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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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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
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- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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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
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- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- 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
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Description
[式中、R1、R2及びR3は各々独立に、水素原子、炭素数1〜5のアルキル基、炭素数1〜5のアルコキシ基、炭素数1〜5のアルコキシカルボニル基又はアリール基を示し、R1、R2及びR3のうち少なくとも一つは炭素数1〜5のアルコキシ基であり、R4は(メタ)アクリロキシ基、ビニル基、イソシアナート基、イミダゾール基、メルカプト基、アミノ基、メチルアミノ基、ジメチルアミノ基、ベンジルアミノ基、フェニルアミノ基、シクロヘキシルアミノ基、モルホリノ基、ピペラジノ基、ウレイド基又はグリシジル基を示し、nは1〜10の整数を示す。]
還流冷却器、温度計及び撹拌器を備えたセパラブルフラスコに、エーテル結合を有するジオールとしてポリプロピレングリコール(Mn=2000)1000質量部及び溶媒としてメチルエチルケトン4000質量部を加え、40℃で30分間撹拌した。この溶液を70℃まで昇温した後、触媒としてジメチル錫ラウレート1質量部を加え、次いで、この溶液に対して、ジイソシアネート化合物として4,4−ジフェニルメタン−ジイソシアネート125質量部をメチルエチルケトン125質量部に溶解させた溶液を、1時間かけて滴下した。
温度計、攪拌機、不活性ガス導入口及び還流冷却器を備えた2リットルの四つ口フラスコに、ポリカーボネートジオール(アルドリッチ社製、数平均分子量2000)4000質量部、2−ヒドロキシエチルアクリレート238質量部、ハイドロキノンモノメチルエーテル0.49質量部及びスズ系触媒4.9質量部を仕込み70℃に加熱し、IPDI(イソホロンジイソシアネート)666質量部を3時間かけて均一に滴下し、反応させた。滴下完了後15時間反応を継続し、NCO%(ウレタン基に対するイソシアネート基の量)が0.2%以下となった時点を反応終了とし、ウレタンアクリレートを得た。GPCによる分析の結果、得られたウレタンアクリレートの重量平均分子量は8500であった。なお、GPC分析は表1の条件で行った。
ポリスチレン粒子の表面上に、厚さ0.2μmのニッケルからなる層を設け、更にこのニッケルからなる層の表面上に、厚さ0.04μmになるように金からなる層を設けた。こうして平均粒子径5μmの導電性粒子を作製した。
(a)成分の熱可塑性樹脂としては、フェノキシ樹脂(PKHC、ユニオンカーバイト社製商品名、重量平均分子量45000、表中「PKHC」と表す。)40gをメチルエチルケトン60gに溶解した固形分濃度40質量%の溶液、及び、製造例1で得られたポリウレタン樹脂(表中「PU」と表す。)の固形分濃度30質量%の溶液を用いた。
実施例1〜5及び比較例1〜5の各フィルム状接着剤を用いて、実施例6〜10及び比較例6〜10の接続構造体を作製した。
実施例及び比較例で得られた回路接続構造体について、それぞれ隣接回路間の抵抗値(接続抵抗)を、マルチメータで測定した。隣接回路間の抵抗37点の平均を、初期接続抵抗の評価結果とした。評価結果を表4に示す。
実施例及び比較例で得られた回路接続構造体について、それぞれ接続部材とFPC基板との間の接着力をJIS−Z0237に準じた90度剥離法で測定して、測定された値を初期接着力の評価結果とした。なお、接着力の測定装置は東洋ボールドウィン株式会社製テンシロンUTM−4(剥離速度50mm/min、25℃)を使用した。評価結果を表4を示す。
実施例及び比較例で得られた回路接続構造体を、85℃、85%RHの条件下に250時間保持して、測定サンプルを得た。得られたサンプルについて、上記評価1及び2と同様の方法により、接続抵抗及び接着力の評価を行った。評価結果を表4に示す。
実施例1〜5及び比較例1〜5のフィルム状接着剤の製造に用いた塗工液をそれぞれ、厚さ50μmのポリエチレンテレフタレート(PET)フィルム上に10m塗工し、70℃、10分の熱風乾燥を行って、PETフィルム上に厚さ16μmのフィルム状接着剤を形成して、PETフィルムとフィルム状接着剤とを備える接着フィルムを得た。
得られた接着フィルムの巻重体先端部に、75gの荷重を固定して30℃雰囲気下で6時間荷重をぶら下げたまま放置した。放置後の巻重体を観察し、PETフィルム間からのフィルム状接着剤の染み出しの有無を確認した。また、放置後の巻重体から接着フィルムを引き出し、フィルム状接着剤のPETフィルム裏面への転写の有無を確認した。染み出し及び転写のいずれも見られなかった場合を「A」、転写は見られなかったが染み出しが見られた場合を「B」、染み出し及び転写がいずれも見られた場合を「C」として、評価した。評価結果を表5に示す。
Claims (10)
- 相対向する二つの回路部材を電気的に接続するための回路接続材料であって、
熱可塑性樹脂、ラジカル重合性化合物、ラジカル重合開始剤及び無機微粒子を含有し、
前記ラジカル重合性化合物の含有量が、前記回路接続材料の全量基準で40質量%以上であり、
前記ラジカル重合性化合物のうち分子量1000以下の化合物の含有量が、前記回路接続材料の全量基準で15質量%以下であり、
前記無機微粒子が、シリカ微粒子、アルミナ微粒子、シリカ−アルミナ微粒子、チタニア微粒子及びジルコニア微粒子からなる群より選ばれる少なくとも1種の金属酸化物微粒子であり、前記無機微粒子の含有量が、前記回路接続材料の全量基準で10〜30質量%であり、
少なくとも下記式(1)で表される化合物を含有する、回路接続材料。
[式中、R1、R2及びR3は各々独立に、水素原子、炭素数1〜5のアルキル基、炭素数1〜5のアルコキシ基、炭素数1〜5のアルコキシカルボニル基又はアリール基を示し、R1、R2及びR3のうち少なくとも一つは炭素数1〜5のアルコキシ基であり、R4は(メタ)アクリロキシ基、ビニル基、イソシアナート基、イミダゾール基、メルカプト基、アミノ基、メチルアミノ基、ジメチルアミノ基、ベンジルアミノ基、フェニルアミノ基、シクロヘキシルアミノ基、モルホリノ基、ピペラジノ基、ウレイド基又はグリシジル基を示し、nは1〜10の整数を示す。] - 前記熱可塑性樹脂が、ガラス転移温度が25℃以上の樹脂を少なくとも1種含む、請求項1に記載の回路接続材料。
- 前記無機微粒子の平均粒子径が1μm未満である、請求項1又は2に記載の回路接続材料。
- 導電性粒子が分散されている、請求項1〜3のいずれか一項に記載の回路接続材料。
- 形状がフィルム状である、請求項1〜4のいずれか一項に記載の回路接続材料。
- 前記二つの回路部材のうち少なくとも一方が、ガラス基板である、請求項1〜5のいずれか一項に記載の回路接続材料。
- 前記二つの回路部材のうち少なくとも一方が、フレキシブル基板である、請求項1〜6のいずれか一項に記載の回路接続材料。
- 請求項1〜7のいずれか一項に記載の回路接続材料と、該回路接続材料中に分散された導電性粒子と、を含有する、異方導電性接着剤。
- 対向配置された一対の回路部材と、
請求項1〜7のいずれか一項に記載の回路接続材料の硬化物を含み、前記一対の回路部材の間に介在しそれぞれの回路部材が有する回路電極同士が電気的に接続されるように当該回路部材同士を接続する接続部材と、
を備える、回路接続構造体。 - フィルム基材と、該フィルム基材の一方面上に設けられた請求項1〜7のいずれか一項に記載の回路接続材料を含むフィルム状接着剤と、を備える、接着フィルム。
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