JP2006196850A - 回路接続用接着剤 - Google Patents
回路接続用接着剤 Download PDFInfo
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- JP2006196850A JP2006196850A JP2005096886A JP2005096886A JP2006196850A JP 2006196850 A JP2006196850 A JP 2006196850A JP 2005096886 A JP2005096886 A JP 2005096886A JP 2005096886 A JP2005096886 A JP 2005096886A JP 2006196850 A JP2006196850 A JP 2006196850A
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Classifications
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Conductive Materials (AREA)
- Wire Bonding (AREA)
- Die Bonding (AREA)
Abstract
【解決手段】エポキシ樹脂、潜在性硬化剤、平均粒径が500nm以下である無機フィラー、導電性粒子を必須成分とする回路接続用接着剤。平均粒径500nm以下の無機フィラーを配合することによって熱膨張率を低減し、耐熱性、耐湿性を向上できる。
【選択図】 なし
Description
また特許文献2には、エポキシ樹脂、潜在性硬化剤、無機フィラー及びポリエーテルスルホンからなり、該エポキシ樹脂と該潜在性硬化剤と該ポリエーテルスルホンの合計量100部あたり、該無機フィラーの含有量が5〜900重量部であるエポキシ樹脂系シート状接着剤組成物が開示されている。
(塗工溶液の作製)
エポキシ樹脂として平均分子量約48000、ビスフェノールA型の固形エポキシ樹脂[ジャパンエポキシレジン(株)製、エピコート1256]と平均分子量約400、ビスフェノールA型の液状エポキシ樹脂[大日本インキ化学工業(株)製エピクロン850]、潜在性硬化剤としてマイクロカプセル型イミダゾール系硬化剤[旭化成エポキシ(株)製、ノバキュアHX3941]とを、重量比で40/55/20の割合で用い、これらをシクロヘキサノンに溶解し固形分60%の樹脂組成物溶液を作製した。ここに無機フィラーとして平均粒径20nmの球状シリカ粒子をエポキシ樹脂の合計重量に対して5重量%となるように加え、3本ロールによる混練を行って均一な溶液とした。更に導電性粒子として、3μmから11μmまでの鎖長分布を有する針状ニッケル粒子(平均粒径200nmのニッケル微粒子が針形状に連結したもの。アスペクト比:15〜55)を、固形分の総量(樹脂組成物+無機フィラー+ニッケル粉末)に対して1体積%となるように添加し、遠心ミキサーを用いて攪拌することで均一分散し、接着剤用の塗工溶液を調製した。
上記で調整した塗工溶液を、離型処理したPETフィルム上にドクターナイフを用いて塗布した後、磁束密度100mTの磁場中、60℃で30分間乾燥、固化させることによって、厚み25μmのフィルム状の回路接続用接着剤を得た。
幅15μm、長さ100μm、高さ16μmの金メッキバンプが15μm間隔で726個配列されたICチップと、幅20μm、スペース10μmで同数のITO電極が形成されたガラス基板とを用意した。このICチップと回路基板との間に前記で得られた回路接続用接着剤フィルムを挟み、200℃に加熱しながら、1バンプ当たり20gfの圧力で20秒間加圧して熱接着させ、ICとガラス基板との接合体を得た。この接合体の726個の電極のうち、ITO電極、回路接続用接着剤、及び金バンプを介して接続された連続する32個の抵抗値を四端子法により求め、その値を32で除することによって1電極当たりの接続抵抗を求めた。この評価を10回繰り返し、接続抵抗の平均値を求めた。
前記のICとガラス基板との接合体を温度60℃、湿度90%に設定した恒温恒湿槽内に投入し、100時間経過後に取り出し、再び前記と同様にして接続抵抗の平均値を求めた。その結果を表1に示す。
200℃、1時間の処理で完全硬化させた上記回路接続用接着剤について、まずは初期重量(M1)を測定し、さらに30℃,90% RHに100時間放置後の重量(M2)を測定した。これらの測定結果より吸水率を以下の式≪1≫に基づいて求めた。
吸水率(重量%)=〔(M2−M1)/M1〕×100・・・≪1≫
無機フィラーとして、平均粒径が20nmで、γ−グリシドキシプロピルトリメトキシシラン[信越化学工業(株)製、商品名KBM−403]を用いて表面処理した球状シリカ粒子を用いたこと以外は実施例1と同様にして厚みが25μmのフィルム状の回路接続用接着剤を作製し、接続抵抗評価、耐熱・耐湿試験及び吸水率測定を行った。その結果を表1に示す。
無機フィラーとして、平均粒径が20nmで、γ−アミノプロピルトリメトキシシラン[信越化学工業(株)製、商品名KBM−903]を用いて表面処理した球状シリカ粒子を用いたこと以外は実施例1と同様にして厚みが25μmのフィルム状の回路接続用接着剤を作製し、接続抵抗評価、耐熱・耐湿試験及び吸水率測定を行った。その結果を表1に示す。
無機フィラーとして、平均粒径が5μmのシリカ粒子を用いたこと以外は実施例1と同様にして厚みが25μmのフィルム状の回路接続用接着剤を作製し、接続抵抗評価、耐熱・耐湿試験及び吸水率測定を行った。その結果を表1に示す。
無機フィラーの配合割合をエポキシ樹脂の合計重量の32重量%としたこと以外は実施例と同様にして厚みが25μmのフィルム状の回路接続用接着剤を作製し、接続抵抗評価、耐熱・耐湿試験及び吸水率測定を行った。その結果を表1に示す。
無機フィラーの配合割合をエポキシ樹脂の合計重量の0.1重量%としたこと以外は実施例と同様にして厚みが25μmのフィルム状の回路接続用接着剤を作製し、接続抵抗評価、耐熱・耐湿試験を行った。その結果を表1に示す。
Claims (8)
- (1)エポキシ樹脂
(2)潜在性硬化剤
(3)平均粒径が500nm以下である無機フィラー
(4)導電性粒子
を必須成分とする回路接続用接着剤。 - 前記無機フィラーの配合量が、エポキシ樹脂の合計重量の0.5重量%以上30重量%以下であることを特徴とする請求項1に記載の回路接続用接着剤。
- 前記無機フィラーの平均粒径が100nm以下であることを特徴とする請求項1又は2に記載の回路接続用接着剤。
- 前記無機フィラーがシリカフィラーである請求項1〜3のいずれかに記載の回路接続用接着剤。
- 前記無機フィラーが、カップリング剤で表面処理されたものであることを特徴とする、請求項1〜4のいずれかに記載の回路接続用接着剤。
- 前記カップリング剤が、アルコキシ基を含有するシランカップリング剤であることを特徴とする請求項5に記載の回路接続用接着剤。
- 前記導電性粒子が、径と長さの比(アスペクト比)が5以上の導電性粒子であることを特徴とする請求項1〜6のいずれかに記載の回路接続用接着剤。
- 形状がフィルム形状であり、前記導電性粒子がフィルムの厚み方向に配向していることを特徴とする請求項7に記載の回路接続用接着剤。
Priority Applications (8)
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JP2005096886A JP5030196B2 (ja) | 2004-12-16 | 2005-03-30 | 回路接続用接着剤 |
CN2005800147310A CN1950912B (zh) | 2004-12-16 | 2005-12-02 | 电路连接粘合剂 |
KR1020067021583A KR101187953B1 (ko) | 2004-12-16 | 2005-12-02 | 회로접속용 접착제 |
EP05811653A EP1850351B1 (en) | 2004-12-16 | 2005-12-02 | Adhesive for circuit connection |
DE602005026579T DE602005026579D1 (de) | 2004-12-16 | 2005-12-02 | Klebstoff für schaltkreisverbindungen |
US11/578,334 US7588698B2 (en) | 2004-12-16 | 2005-12-02 | Circuit connecting adhesive |
PCT/JP2005/022190 WO2006064678A1 (ja) | 2004-12-16 | 2005-12-02 | 回路接続用接着剤 |
TW094144176A TWI360821B (en) | 2004-12-16 | 2005-12-14 | Circuit connecting adhesive |
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JP2004363757 | 2004-12-16 | ||
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JP2005096886A JP5030196B2 (ja) | 2004-12-16 | 2005-03-30 | 回路接続用接着剤 |
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US (1) | US7588698B2 (ja) |
EP (1) | EP1850351B1 (ja) |
JP (1) | JP5030196B2 (ja) |
KR (1) | KR101187953B1 (ja) |
CN (1) | CN1950912B (ja) |
DE (1) | DE602005026579D1 (ja) |
TW (1) | TWI360821B (ja) |
WO (1) | WO2006064678A1 (ja) |
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- 2005-12-02 US US11/578,334 patent/US7588698B2/en not_active Expired - Fee Related
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Publication number | Publication date |
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KR101187953B1 (ko) | 2012-10-04 |
EP1850351A4 (en) | 2009-06-03 |
EP1850351B1 (en) | 2011-02-23 |
EP1850351A1 (en) | 2007-10-31 |
US7588698B2 (en) | 2009-09-15 |
DE602005026579D1 (de) | 2011-04-07 |
TWI360821B (en) | 2012-03-21 |
KR20070089766A (ko) | 2007-09-03 |
TW200631040A (en) | 2006-09-01 |
WO2006064678A1 (ja) | 2006-06-22 |
JP5030196B2 (ja) | 2012-09-19 |
US20070215838A1 (en) | 2007-09-20 |
CN1950912A (zh) | 2007-04-18 |
CN1950912B (zh) | 2010-05-05 |
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