JP2000315422A - Anisotropic conductive adhesive - Google Patents
Anisotropic conductive adhesiveInfo
- Publication number
- JP2000315422A JP2000315422A JP11125475A JP12547599A JP2000315422A JP 2000315422 A JP2000315422 A JP 2000315422A JP 11125475 A JP11125475 A JP 11125475A JP 12547599 A JP12547599 A JP 12547599A JP 2000315422 A JP2000315422 A JP 2000315422A
- Authority
- JP
- Japan
- Prior art keywords
- oxide film
- particles
- metal
- conductive particles
- conductive adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Conductive Materials (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子デバイス用途
に用いて好適なペースト状異方性導電接着剤に関する。TECHNICAL FIELD The present invention relates to a paste-like anisotropic conductive adhesive suitable for use in electronic devices.
【０００２】[0002]
【従来の技術】半導体チップなど電子部品を回路基板な
ど電極をもつ電子機器の所定部位へ接着するための接着
剤として、多くの異方性導電接着剤が提案されている。
この種の異方性導電接着剤は、導電性粒子を接着剤に混
ぜ、電極間に挾み、熱圧着するが、導電性粒子が電極間
に挾まれることにより圧着方向導電性が確保される。そ
の場合の導電性粒子としては、Ａｇ、Ｃｕ、Ｎｉなどの
金属の粒子や、それら金属を樹脂、ガラス等の絶縁性粒
子表面に被覆した金属コート粒子が用いられることが多
い。2. Description of the Related Art Many anisotropic conductive adhesives have been proposed as adhesives for bonding electronic components such as semiconductor chips to predetermined portions of electronic equipment having electrodes such as circuit boards.
This type of anisotropic conductive adhesive mixes conductive particles with the adhesive, sandwiches them between the electrodes, and performs thermocompression bonding. The conductive particles are sandwiched between the electrodes to ensure conductivity in the compression direction. You. In such a case, as the conductive particles, metal particles such as Ag, Cu, and Ni, and metal-coated particles in which the metal is coated on the surface of insulating particles such as resin and glass are often used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、近時、
回路の高密度化に伴い、上記導電性粒子を接着剤に混ぜ
て導通を得ていたのでは、粒子どうしが接した場合、隣
接回路間の絶縁性の確保が困難になってきた。However, recently,
With the increase in circuit density, if the conductive particles are mixed with an adhesive to obtain electrical continuity, it is difficult to secure insulation between adjacent circuits when the particles come into contact with each other.
【０００４】本発明は、従来の異方性導電接着剤におけ
る上記の問題点を解決するためになされたもので、導電
粒子どうしが接した際は導通せず、熱圧着した部分にの
み導通をとれ、隣接回路間の絶縁性の確保が確実である
異方性導電接着剤を提供しようとするものである。The present invention has been made to solve the above-mentioned problems in the conventional anisotropic conductive adhesive, and does not conduct when the conductive particles come into contact with each other, but conducts only to the thermocompression bonded portion. In other words, an object of the present invention is to provide an anisotropic conductive adhesive in which insulation between adjacent circuits is ensured.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記の目的
を達成しようと鋭意研究を重ねた結果、導電性粒子の表
面が、絶縁性皮膜で覆われた導電粒子を使用することに
より、導電性粒子どうしが接した方向には導通せず、熱
圧着した部分のみ導通をとれることを発見し、このこと
で上記の目的が達成されることを見いだし、本発明を完
成したものである。Means for Solving the Problems The present inventor has made intensive studies to achieve the above object, and as a result, by using conductive particles whose surface is covered with an insulating film, The present inventors have found that the conductive particles do not conduct in the direction in which they contact each other, but can conduct only in the thermocompression-bonded portion, thereby finding that the above object can be achieved, thereby completing the present invention.
【０００６】すなわち、本発明は、（Ａ）エポキシ樹
脂、（Ｂ）硬化剤および（Ｃ）導電性粒子を必須成分と
し、（Ｃ）導電性粒子が、粒子表面を絶縁性皮膜で被覆
した導電粒子であることを特徴とする異方性導電接着剤
である。That is, the present invention comprises (A) an epoxy resin, (B) a curing agent and (C) conductive particles as essential components, and (C) the conductive particles having a particle surface coated with an insulating film. An anisotropic conductive adhesive characterized by being particles.
【０００７】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００８】本発明に用いる（Ａ）エポキシ樹脂として
は、１分子中に２個以上のエポキシ基を有する多価エポ
キシ樹脂であれば、一般に用いられているエポキシ樹脂
が使用可能である。具体的なものとしては、例えば、フ
ェノールノボラックやクレゾールノボラック等のノボラ
ック樹脂、ビスフェノールＡ、ビスフェノールＦ、レゾ
ルシン、ビスヒドロキシジフェニルエーテル等の多価フ
ェノール類、エチレングリコール、ネオペンチルグリコ
ール、グリセリン、トリメチロールプロパン、ポリプロ
ピレングリコール等の多価アルコール類、エチレンジア
ミン、トリエチレンテトラミン、アニリン等のポリアミ
ノ化合物、アジピン酸、フタル酸、イソフタル酸等の多
価カルボキシ化合物等とエピクロルヒドリン又は２−メ
チルエピクロルヒドリンを反応させて得られるグリシジ
ル型のエポキシ樹脂が挙げられ、またジシクロペンタジ
エンエポキサイド、ブタジエンダイマージエポキサイド
等の脂肪族および脂環族エポキシ樹脂等も挙げられ、こ
れらは単独又は２種以上混合して使用することができ
る。As the epoxy resin (A) used in the present invention, a commonly used epoxy resin can be used as long as it is a polyvalent epoxy resin having two or more epoxy groups in one molecule. Specific examples include, for example, novolak resins such as phenol novolak and cresol novolak, bisphenol A, bisphenol F, resorcinol, polyhydric phenols such as bishydroxydiphenyl ether, ethylene glycol, neopentyl glycol, glycerin, trimethylolpropane, Glycidyl obtained by reacting polyhydric alcohols such as polypropylene glycol, polyamino compounds such as ethylenediamine, triethylenetetramine and aniline, polycarboxylic compounds such as adipic acid, phthalic acid and isophthalic acid with epichlorohydrin or 2-methylepichlorohydrin. And epoxy resins such as aliphatic and alicyclic epoxy resins such as dicyclopentadiene epoxide and butadiene dimer epoxide. Also, and these may be used alone or in combination.
【０００９】本発明に用いる（Ｂ）硬化剤としては、１
分子中に２個以上の活性水素を有するものであれば特に
制限することなく使用することができる。具体的なもの
として、例えば、ジエチレントリアミン、トリエチレン
テトラミン、メタフェニレンジアミン、ジシアンジアミ
ド、ポリアミドアミン等のポリアミノ化合物、無水フタ
ル酸、無水メチルナジック酸、ヘキサヒドロ無水フタル
酸、無水ピロメリット酸等の有機酸無水物、フェノール
ノボラック、クレゾールノボラック等のノボラック樹脂
等が挙げられ、これらは単独又は２種以上混合して使用
することができる。As the curing agent (B) used in the present invention, 1
Any compound having two or more active hydrogens in the molecule can be used without particular limitation. Specific examples include, for example, polyamino compounds such as diethylenetriamine, triethylenetetramine, metaphenylenediamine, dicyandiamide, and polyamidoamine; phthalic anhydride, methylnadic anhydride, hexahydrophthalic anhydride, and organic acid anhydrides such as pyromellitic anhydride. And novolak resins such as phenol novolak and cresol novolak, and these can be used alone or in combination of two or more.
【００１０】本発明に用いる（Ｃ）導電性粒子は、金属
粒子、無機粒子、表面に金属層を有する無機粒子等の表
面に絶縁性皮膜を有するものであればよく、特に制限す
るものでない。これらの導電性粒子としては、例えば
銅、銀、ニッケル、はんだなどの金属粒子または金属表
層を有する樹脂粒子の表面に金属酸化膜、フッ素樹脂
膜、油脂膜等を被覆したものが挙げられ、これらは単独
または２樹以上混合して使用することができる。金属粒
子表面にその金属の酸化膜を被覆する方法は、熱酸化、
加圧酸化、加湿酸化、化学処理法などの常用の方法によ
ればよい。酸化物皮膜としては、Ｃｕ2 Ｏ、ＣｕＯ、Ａ
ｇ2 Ｏ、ＮｉＯなどが好適である。The conductive particles (C) used in the present invention are not particularly limited as long as they have an insulating film on the surface of metal particles, inorganic particles, inorganic particles having a metal layer on the surface, and the like. Examples of the conductive particles include metal particles such as copper, silver, nickel, and solder or resin particles having a metal surface layer coated on the surface with a metal oxide film, a fluororesin film, a grease film, and the like. Can be used alone or in combination of two or more. The method of coating the metal particle surface with an oxide film of the metal includes thermal oxidation,
Conventional methods such as pressure oxidation, humidification oxidation, and chemical treatment may be used. Cu 2 O, CuO, A
g 2 O, NiO and the like are preferred.
【００１１】金属粒子表面を被覆する酸化皮膜の膜厚
は、０．０１ｎｍ〜１０００ｎｍの範囲が好ましい。酸
化皮膜の膜厚が０．０１ｎｍ未満では絶縁性が乏しく、
１０００ｎｍを超えると導通性が低下しやすい。さらに
好ましい膜厚は、０．１ｎｍ〜１００ｎｍである。The thickness of the oxide film covering the metal particles is preferably in the range of 0.01 nm to 1000 nm. If the thickness of the oxide film is less than 0.01 nm, the insulating property is poor,
If it exceeds 1000 nm, conductivity tends to decrease. A more preferred film thickness is 0.1 nm to 100 nm.
【００１２】上記のように本発明は、接着剤に、上述し
た導電性粒子表面に絶縁性皮膜を有する粒子を混ぜ、分
散させて電極間に挾み、熱圧着させることによって、向
かい合う電極間にだけ導通性を、また隣接する電極間に
は絶縁性をもたせることができる。[0012] As described above, the present invention provides a method of mixing the above-mentioned particles having an insulating film on the surface of the conductive particles into an adhesive, dispersing the particles, sandwiching the particles between the electrodes, and thermocompression bonding. Only the conductivity can be provided, and the insulating property can be provided between the adjacent electrodes.
【００１３】[0013]
【作用】本発明による異方性導電接着剤によれば、微細
電極パターンの回路間接合を隣接電極間の短絡の危険な
しに行うという要件を満たすことができるものである。According to the anisotropic conductive adhesive of the present invention, it is possible to satisfy the requirement that the inter-circuit bonding of the fine electrode pattern is performed without danger of short circuit between adjacent electrodes.
【発明の実施の形態】本発明を実施例によって具体的に
説明するが、本発明はこれらの実施例によって限定され
るものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.
【００１４】実施例１ ビスフェノールＡ型エポキシ樹脂としてＲＥ−３１０Ｓ
（日本化薬株式会社製、商品名）７０％と無水フタル酸
のペンタハード５０００（東燃石油化学株式会社製、商
品名）１０％、イミダゾール変性物のキュアダクトＰ−
１０９０／Ｌ−６１Ｂ（四国化成株式会社製、商品名）
２０％を混合して得た熱硬化性樹脂１００重量部中に、
導電性粒子として粒子の表面が膜厚１０ｎｍのニッケル
酸化膜で覆われたニッケル粒子を１０重量部加え、分散
させて異方性導電接着剤を得た。Example 1 RE-310S as a bisphenol A type epoxy resin
(Nippon Kayaku Co., Ltd., trade name) 70%, phthalic anhydride pentahard 5000 (Tonen Petrochemical Co., Ltd., trade name) 10%, imidazole-modified cure duct P-
1090 / L-61B (trade name, manufactured by Shikoku Chemicals Co., Ltd.)
In 100 parts by weight of a thermosetting resin obtained by mixing 20%,
As conductive particles, 10 parts by weight of nickel particles whose surfaces were covered with a nickel oxide film having a thickness of 10 nm were added and dispersed to obtain an anisotropic conductive adhesive.
【００１５】この接着剤を、電極幅５５μｍ、電極間隔
１５μｍでパターニングされたフレキシブル基板に塗布
し、同一パターンで作成されたもう一つのフレキシブル
基板を重ね、１５０℃、１００秒、４５ｋｇ／ｃｍ2 の
条件で圧着した後、対向電極間の導通抵抗と隣接電極間
の絶縁抵抗の測定を行った。This adhesive is applied to a flexible substrate patterned with an electrode width of 55 μm and an electrode interval of 15 μm, and another flexible substrate formed in the same pattern is superposed on the flexible substrate at 150 ° C. for 100 seconds at 45 kg / cm 2 . After crimping under the conditions, the conduction resistance between the opposing electrodes and the insulation resistance between the adjacent electrodes were measured.
【００１６】実施例２ ビスフェノールＡ型エポキシ樹脂としてＲＥ−３１０Ｓ
（日本化薬社製、商品名）７０％と、無水フタル酸のペ
ンタハード５０００（東燃石油化学社製、商品名）１０
％、イミダゾール変性物のキュアダクトＰ−１０９０／
Ｌ−６１Ｂ（四国加工性社製、商品名）２０％を混合し
て得た熱硬化性樹脂１００重量部中に、導電性粒子とし
て、粒子の表面が膜厚１０ｎｍの絶縁性の銅酸化膜で覆
われた金粒子を１０重量部加え、分散させて異方性導電
接着剤を得た。Example 2 RE-310S as a bisphenol A type epoxy resin
70% (trade name, manufactured by Nippon Kayaku Co., Ltd.) and pentahard 5000 of phthalic anhydride (trade name, manufactured by Tonen Petrochemical Co., Ltd.) 10
%, Imidazole-modified cured product P-1090 /
L-61B (trade name, manufactured by Shikoku Kabushiki Kaisha Co., Ltd.) is used as a conductive particle in 100 parts by weight of a thermosetting resin obtained by mixing 20% of an insulating copper oxide film having a 10 nm-thick surface. Was added and dispersed to obtain an anisotropic conductive adhesive.
【００１７】この接着剤を、電極幅５５μｍ、電極間隔
１５μｍでパターニングされたフレキシブル基板に塗布
し、同一パターンで作成されたもう一つのフレキシブル
基板を重ね、１５０℃、１００秒、４５ｋｇ／ｃｍ2 の
条件で圧着した後、対向電極間の導通抵抗と隣接電極間
の絶縁抵抗の測定を行った。This adhesive is applied to a flexible substrate patterned with an electrode width of 55 μm and an electrode interval of 15 μm, and another flexible substrate formed in the same pattern is superimposed on the flexible substrate at 150 ° C. for 100 seconds at 45 kg / cm 2 . After crimping under the conditions, the conduction resistance between the opposing electrodes and the insulation resistance between the adjacent electrodes were measured.
【００１８】実施例３ ビスフェノールＡ型エポキシ樹脂としてＲＥ−３１０Ｓ
（日本化薬社製、商品名）７０％と、無水フタル酸のペ
ンタハード５０００（東燃石油化学社製、商品名）１０
％、イミダゾール変性物のキュアダクトＰ−１０９０／
Ｌ−６１Ｂ（四国加工性社製、商品名）２０％を混合し
て得た熱硬化性樹脂１００重量部中に、導電性粒子とし
て、粒子の表面が膜厚１０ｎｍの絶縁性のニッケル酸化
膜で覆われたＮｉコート樹脂粒子を１０重量部加え、分
散させて異方性導電接着剤を得た。Example 3 RE-310S as a bisphenol A type epoxy resin
70% (trade name, manufactured by Nippon Kayaku Co., Ltd.) and pentahard 5000 of phthalic anhydride (trade name, manufactured by Tonen Petrochemical Co., Ltd.) 10
%, Imidazole-modified cured product P-1090 /
L-61B (trade name, manufactured by Shikoku Kabushiki Kaisha) is used as a conductive particle in 100 parts by weight of a thermosetting resin obtained by mixing 20% of an insulating nickel oxide film having a 10 nm-thick particle surface. Was added and dispersed to obtain an anisotropic conductive adhesive.
【００１９】この接着剤を、電極幅５５μｍ、電極間隔
１５μｍでパターニングされたフレキシブル基板に塗布
し、同一パターンで作成されたもう一つのフレキシブル
基板を重ね、１５０℃、１００秒、４５ｋｇ／ｃｍ2 の
条件で圧着した後、対向電極間の導通抵抗と隣接電極間
の絶縁抵抗の測定を行った。This adhesive is applied to a flexible substrate patterned with an electrode width of 55 μm and an electrode interval of 15 μm, and another flexible substrate formed in the same pattern is superimposed on the flexible substrate at 150 ° C. for 100 seconds at 45 kg / cm 2 . After crimping under the conditions, the conduction resistance between the opposing electrodes and the insulation resistance between the adjacent electrodes were measured.
【００２０】比較例１ ビスフェノールＡ型エポキシ樹脂としてＲＥ−３１０Ｓ
（日本化薬株式会社製、商品名）７０％と無水フタル酸
のペンタハード５０００（東燃石油化学株式会社製、商
品名）１０％、イミダゾール変性物のキュアダクトＰ−
１０９０／Ｌ−６１Ｂ（四国化成株式会社製、商品名）
２０％を混合して得た熱硬化性樹脂１００重量部中に、
導電性粒子として酸化膜のないＮｉ粒子を１０重量％分
加え、分散させて異方性導電接着剤を得た。Comparative Example 1 RE-310S as a bisphenol A type epoxy resin
70% (trade name, manufactured by Nippon Kayaku Co., Ltd.), 10% of pentahard 5000 of phthalic anhydride (trade name, manufactured by Tonen Petrochemical Co., Ltd.), Cureduct P- of modified imidazole
1090 / L-61B (trade name, manufactured by Shikoku Chemicals Co., Ltd.)
In 100 parts by weight of a thermosetting resin obtained by mixing 20%,
10% by weight of Ni particles without an oxide film were added and dispersed as conductive particles to obtain an anisotropic conductive adhesive.
【００２１】この接着剤を、電極幅５５μｍ、電極間隔
１５μｍでパターニングされたフレキシブル基板に塗布
し、同一パターンで作成されたもう一つのフレキシブル
基板を重ね、１５０℃、１００秒、４５ｋｇ／ｃｍ2 の
条件で圧着した後、対向電極間の導通抵抗と隣接電極間
の絶縁抵抗の測定を行った。This adhesive is applied to a flexible substrate patterned with an electrode width of 55 μm and an electrode interval of 15 μm, and another flexible substrate formed in the same pattern is superimposed on the flexible substrate at 150 ° C. for 100 seconds at 45 kg / cm 2 . After crimping under the conditions, the conduction resistance between the opposing electrodes and the insulation resistance between the adjacent electrodes were measured.
【００２２】実施例１〜３、比較例１で作成した異方性
導電接着剤について測定した接続抵抗値、絶縁抵抗の結
果を表１に示す。接続抵抗値ついては実施例、比較例と
もに良好な結果が得られたが、絶縁抵抗においては、実
施例の結果が良好であった。Table 1 shows the results of the connection resistance and the insulation resistance measured for the anisotropic conductive adhesives prepared in Examples 1 to 3 and Comparative Example 1. Good results were obtained for the connection resistance values in both the examples and comparative examples, but the results of the examples were good in the insulation resistance.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】以上の説明および表１から明らかなよう
に、本発明によれば、絶縁性酸化皮膜で覆われた金属粒
子を導電性粒子として使用することによって、高密度化
回路においても、隣接回路間の絶縁性の確保が容易な異
方性導電接着剤を得ることができた。As is apparent from the above description and Table 1, according to the present invention, by using metal particles covered with an insulating oxide film as conductive particles, even in a high-density circuit, It was possible to obtain an anisotropic conductive adhesive in which insulation between adjacent circuits could be easily ensured.
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成１２年２月１５日（２０００．２．１
５）[Submission date] February 15, 2000 (2000.2.1
5)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Correction target item name] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００５】本発明者は、上記の目的を達成しようと鋭
意研究を重ねた結果、導電粒子の表面が、絶縁性酸化金
属皮膜で覆われた導電性粒子を使用することにより、導
電性粒子どうしが接した方向には導通せず、熱圧着した
部分のみ導通をとれることを発見し、このことで上記の
目的が達成されることを見いだし、本発明を完成したも
のである。The inventor of the present invention has made intensive studies to achieve the above object, and as a result, the surface of the conductive particles has become insulative gold oxide.
The use of coated conductive particles in the genus coating, in the direction in which the conductive particles to each other is in contact not conduct and discovered that take a conducting only the portion was heat pressed, the above object is achieved in this It has been found that the present invention has been completed.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】すなわち、本発明は、（Ａ）エポキシ樹
脂、（Ｂ）硬化剤および（Ｃ）導電性粒子を必須成分と
し、（Ｃ）導電性粒子が、粒子表面全体を０．１〜１０
０ｎｍ厚の絶縁性酸化金属皮膜で被覆した導電粒子であ
ることを特徴とする異方性導電接着剤である。That is, the present invention comprises (A) an epoxy resin, (B) a curing agent and (C) conductive particles as essential components, and (C) the conductive particles cover the entire particle surface in an amount of 0.1 to 10%.
An anisotropic conductive adhesive characterized by conductive particles coated with a 0 nm thick insulating metal oxide film.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１０】本発明に用いる（Ｃ）導電性粒子は、導電
粒子の表面に絶縁性酸化金属皮膜を有するものであれば
よく、特に制限するものでない。これらの導電性粒子と
しては、例えば銅、銀、ニッケル、はんだなどの金属粒
子または金属表層を有する樹脂粒子の表面に金属酸化膜
を被覆したものが挙げられ、これらは単独または２種以
上混合して使用することができる。金属粒子表面にその
金属の酸化膜を被覆する方法は、熱酸化、加圧酸化、加
湿酸化、化学処理法などの常用の方法によればよい。酸
化物皮膜としては、Ｃｕ2 Ｏ、ＣｕＯ、Ａｇ2 Ｏ、Ｎｉ
Ｏなどが好適である。[0010] The conductive particles (C) used in the present invention are preferably electrically conductive.
What is necessary is just to have an insulating metal oxide film on the surface of a particle, and it does not specifically limit. Examples of the conductive particles include metal particles such as copper, silver, nickel, and solder, or resin particles having a metal surface layer coated with a metal oxide film. it can be used as a mixture on the seed than <br/>. The method of coating the metal particle surface with the metal oxide film may be a conventional method such as thermal oxidation, pressure oxidation, humidification oxidation, and chemical treatment. As the oxide film, Cu 2 O, CuO, Ag 2 O, Ni
O and the like are preferable.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１１[Correction target item name] 0011
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１１】金属粒子表面を被覆する酸化金属皮膜の膜
厚は、０．１ｎｍ〜１００ｎｍの範囲が好ましい。酸化
金属皮膜の膜厚が０．１ｎｍ未満では絶縁性が乏しく、
１００ｎｍを超えると導通性が低下しやすい。The thickness of the metal oxide film covering the surface of the metal particles is preferably in the range of 0.1 nm to 100 nm. Oxidation
If the thickness of the metal film is less than 0.1 nm, the insulating property is poor,
If it exceeds 100 nm, the conductivity tends to decrease.
【手続補正６】[Procedure amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１２】上記のように本発明は、接着剤に、上述し
た導電粒子表面に絶縁性酸化金属皮膜を有する導電性粒
子を混ぜ、分散させて電極間に挾み、熱圧着させること
によって、向かい合う電極間にだけ導通性を、また隣接
する電極間には絶縁性をもたせることができる。As described above, according to the present invention, the conductive particles having an insulating metal oxide film on the surface of the conductive particles are provided on the adhesive.
Mix slave, sandwiched between the electrodes is dispersed, by thermocompression bonding, only continuity between facing electrodes, also between adjacent electrodes can be imparted an insulating property.
【手続補正７】[Procedure amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Correction target item name] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２４】[0024]
【発明の効果】以上の説明および表１から明らかなよう
に、本発明によれば、絶縁性酸化金属皮膜で覆われた導
電粒子を、導電性粒子として使用することによって、高
密度化回路においても、隣接回路間の絶縁性の確保が容
易な異方性導電接着剤を得ることができた。As is apparent from the above description and Table 1, according to the present invention, the conductor covered with the insulating metal oxide film is provided.
By using the electric particles as the conductive particles, it was possible to obtain an anisotropic conductive adhesive which can easily ensure insulation between adjacent circuits even in a high-density circuit.
Claims (5)
び（Ｃ）導電性粒子を必須成分とし、（Ｃ）導電性粒子
が、粒子表面を絶縁性皮膜で被覆した導電粒子であるこ
とを特徴とする異方性導電接着剤。Claims: 1. An epoxy resin, (B) a curing agent and (C) conductive particles are essential components, and (C) the conductive particles are conductive particles whose surface is coated with an insulating film. An anisotropic conductive adhesive characterized by the following.
膜である請求項１記載の異方性導電接着剤。2. The anisotropic conductive adhesive according to claim 1, wherein the insulating film on the particle surface is an insulating oxide film.
化金属皮膜である請求項２記載の異方性導電接着剤。3. The anisotropic conductive adhesive according to claim 2, wherein the insulating oxide film on the particle surface is an insulating metal oxide film.
金属もしくは粒子表層金属と同種の金属の酸化金属皮膜
である請求項３記載の異方性導電接着剤。4. The anisotropic conductive adhesive according to claim 3, wherein the insulating metal oxide film on the surface of the particle is a metal oxide film of the same kind of metal as the particle metal or the surface metal of the particle.
金属もしくは粒子表層金属と異種の金属の酸化金属皮膜
である請求項４記載の異方性導電接着剤。5. The anisotropic conductive adhesive according to claim 4, wherein the insulating metal oxide film on the surface of the particle is a metal oxide film of a metal different from the particle metal or the surface metal of the particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11125475A JP3101265B1 (en) | 1999-05-06 | 1999-05-06 | Anisotropic conductive adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11125475A JP3101265B1 (en) | 1999-05-06 | 1999-05-06 | Anisotropic conductive adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3101265B1 JP3101265B1 (en) | 2000-10-23 |
| JP2000315422A true JP2000315422A (en) | 2000-11-14 |
Family
ID=14911018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11125475A Expired - Fee Related JP3101265B1 (en) | 1999-05-06 | 1999-05-06 | Anisotropic conductive adhesive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3101265B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009054386A1 (en) * | 2007-10-22 | 2009-04-30 | Nippon Chemical Industrial Co., Ltd. | Coated conductive powder and conductive adhesive using the same |
| JP2015149313A (en) * | 2014-02-04 | 2015-08-20 | 日立化成株式会社 | Adhesive for electronic device and method of bonding electronic device |
| WO2016140326A1 (en) * | 2015-03-04 | 2016-09-09 | デクセリアルズ株式会社 | Method for manufacturing conductive particles, anisotropically conductive adhesive, and method for mounting component |
| WO2017164318A1 (en) * | 2016-03-25 | 2017-09-28 | デクセリアルズ株式会社 | Anisotropic conductive adhesive and light emission device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5329028B2 (en) * | 2006-09-15 | 2013-10-30 | パナソニック株式会社 | Manufacturing method of electronic component mounting structure |
-
1999
- 1999-05-06 JP JP11125475A patent/JP3101265B1/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009054386A1 (en) * | 2007-10-22 | 2009-04-30 | Nippon Chemical Industrial Co., Ltd. | Coated conductive powder and conductive adhesive using the same |
| US8262940B2 (en) | 2007-10-22 | 2012-09-11 | Nippon Chemical Industrial Co., Ltd. | Coated conductive powder and conductive adhesive using the same |
| JP2015149313A (en) * | 2014-02-04 | 2015-08-20 | 日立化成株式会社 | Adhesive for electronic device and method of bonding electronic device |
| WO2016140326A1 (en) * | 2015-03-04 | 2016-09-09 | デクセリアルズ株式会社 | Method for manufacturing conductive particles, anisotropically conductive adhesive, and method for mounting component |
| WO2017164318A1 (en) * | 2016-03-25 | 2017-09-28 | デクセリアルズ株式会社 | Anisotropic conductive adhesive and light emission device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3101265B1 (en) | 2000-10-23 |
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