JP5565277B2 - 異方性導電フィルム - Google Patents
異方性導電フィルム Download PDFInfo
- Publication number
- JP5565277B2 JP5565277B2 JP2010250517A JP2010250517A JP5565277B2 JP 5565277 B2 JP5565277 B2 JP 5565277B2 JP 2010250517 A JP2010250517 A JP 2010250517A JP 2010250517 A JP2010250517 A JP 2010250517A JP 5565277 B2 JP5565277 B2 JP 5565277B2
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- JP
- Japan
- Prior art keywords
- anisotropic conductive
- conductive film
- insulating adhesive
- adhesive layer
- containing layer
- 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.)
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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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
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
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- B32B2439/00—Containers; Receptacles
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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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- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
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- C—CHEMISTRY; METALLURGY
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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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- C—CHEMISTRY; METALLURGY
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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
- C09J2301/40—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
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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
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
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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
- C09J2433/00—Presence of (meth)acrylic polymer
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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
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- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—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
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32225—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- 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
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/06—Polymers
- H01L2924/078—Adhesive characteristics other than chemical
- H01L2924/07802—Adhesive characteristics other than chemical not being an ohmic electrical conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/156—Material
- H01L2924/15786—Material with a principal constituent of the material being a non metallic, non metalloid inorganic material
- H01L2924/15788—Glasses, e.g. amorphous oxides, nitrides or fluorides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
Description
該絶縁性接着層及び該導電性粒子含有層が、それぞれチオール化合物を含有することを特徴とする異方性導電フィルムを提供する。
表2の配合組成をそれぞれ常法により均一に混合することにより導電性粒子含有層形成用組成物及び絶縁性接着層形成用組成物を調製した。続いて、剥離処理ポリエステルフィルムに、絶縁性接着層形成用組成物を乾燥厚が18μmとなるようにバーコーターにより塗布し、70℃の熱風を5分間吹き掛けて乾燥させることにより絶縁性接着層を形成した。次に、絶縁性接着層上に、導電性粒子含有層形成用組成物を、乾燥厚が17μmとなるようにバーコーターにより塗布し、70℃の熱風を5分間吹き掛けて乾燥させることにより導電性粒子含有層を形成した。これにより、異方性導電フィルムを得た。
PEMP: ペンタエリスリトール テトラキス(3−メルカプトプロピオネート)、SC有機化学(株)
TEMPIC: トリス−[(3−メルカプトプロピオニルオキシ)−エチル]−イソシアヌレート、SC有機化学(株)
TMMP: トリメチロールプロパン トリス(3−メルカプトプロピオネート)、SC有機化学(株)
DPMP: ジペンタエリスリトール ヘキサキス(3−メルカプトプロピオネート)、SC有機化学(株)
EHMP: 2−エチルヘキシル−3−メルカプトプロピオネート、SC有機化学(株)
EGMP−4: テトラエチレングリコールビス(3−メルカプトプロピオネート)、SC有機化学(株)
ガラスエポキシ基板表面の35μm厚の銅箔に200μmピッチの配線が形成されたプリント配線板(PWB)に対し、異方性導電フィルムを、その導電性粒子含有層側がPWB側になるように配し、80℃、1MPa、2秒という条件で加熱圧着し、剥離PETフィルムを引き剥がし、PWB表面に異方性導電フィルムを仮接着した。この異方性導電フィルムに対し、COF基板(厚さ38μmのポリイミドフィルムに200μmピッチの厚さ8μmの銅配線を形成した配線基板)の銅配線部分を載せ、130℃、3MPa、3秒又は190℃、3MPa、5秒という条件で圧着して評価用の接続構造体を得た。
得られた接続構造体のPWBに対しCOF基板を、剥離試験機((株)エー・アンド・デイ)を用いて、剥離速度50mm/分で90度剥離試験(JIS K6854−1)を行い、ピール強度を接着強度として測定し、以下の基準で評価した。実用上、AAもしくはA評価であることが望まれる。
AA: 10[N/5cm]以上
A: 7[N/5cm]以上10[N/5cm]未満
B: 5[N/5cm]以上7[N/5cm]未満
C: 5[N/5cm]未満
得られた接続構造体について、4端子法(JIS K7194)に従って初期導通抵抗(Ω:max値)と、温度85℃、湿度85%RHの恒温槽中に500時間保持した後のエージング後導通抵抗(Ω:max値)とをマルチメータ(品番34401A、Agilent社)で測定し、以下の基準で評価した。実用上、初期及びエージング後の双方において、悪くてもB評価であることが望まれる。
AA: 0.7Ω以下
A: 0.7Ωより大1.5Ω以下
B: 1.5Ωより大2Ω以下
C: 2Ωより大
Claims (13)
- 重合性アクリル系化合物、フィルム形成樹脂及び重合開始剤を含有する絶縁性接着層と、重合性アクリル系化合物、フィルム形成樹脂、重合開始剤及び導電性粒子を含有する導電性粒子含有層とが積層されてなる異方性導電フィルムにおいて、
該絶縁性接着層及び該導電性粒子含有層が、それぞれチオール化合物を含有し、該絶縁性接着層及び該導電性粒子含有層のチオール化合物の含有量が、それぞれ0.5〜5質量%及び0.3〜4質量%であることを特徴とする異方性導電フィルム。 - 該絶縁性接着層中のチオール化合物の含有量が、該導電性粒子含有層のチオール化合物の含有量以上である請求項1記載の異方性導電フィルム。
- 該絶縁性接着層及び該導電性粒子含有層のチオール化合物が、それぞれ独立的にペンタエリスリトール テトラキス(3−メルカプトプロピオネート)、トリス−[(3−メルカプトプロピオニルオキシ)−エチル]−イソシアヌレート、トリメチロールプロパン トリス(3−メルカプトプロピオネート)、及びジペンタエリスリトール ヘキサキス(3−メルカプトプロピオネート)からなる群より選択される化合物である請求項1又は2記載の異方性導電フィルム。
- 重合性アクリル系化合物、フィルム形成樹脂及び重合開始剤を含有する絶縁性接着層と、重合性アクリル系化合物、フィルム形成樹脂、重合開始剤及び導電性粒子を含有する導電性粒子含有層とが積層されてなる異方性導電フィルムにおいて、
該絶縁性接着層及び該導電性粒子含有層が、それぞれチオール化合物を含有し、該絶縁性接着層中のチオール化合物の含有量が、該導電性粒子含有層のチオール化合物の含有量以上であることを特徴とする異方性導電フィルム。 - 該絶縁性接着層及び該導電性粒子含有層のチオール化合物が、それぞれ独立的にペンタエリスリトール テトラキス(3−メルカプトプロピオネート)、トリス−[(3−メルカプトプロピオニルオキシ)−エチル]−イソシアヌレート、トリメチロールプロパン トリス(3−メルカプトプロピオネート)、及びジペンタエリスリトール ヘキサキス(3−メルカプトプロピオネート)からなる群より選択される化合物である請求項4記載の異方性導電フィルム。
- 重合性アクリル系化合物、フィルム形成樹脂及び重合開始剤を含有する絶縁性接着層と、重合性アクリル系化合物、フィルム形成樹脂、重合開始剤及び導電性粒子を含有する導電性粒子含有層とが積層されてなる異方性導電フィルムにおいて、
該絶縁性接着層及び該導電性粒子含有層が、それぞれチオール化合物を含有し、該絶縁性接着層及び該導電性粒子含有層のチオール化合物が、それぞれ独立的にペンタエリスリトール テトラキス(3−メルカプトプロピオネート)、トリス−[(3−メルカプトプロピオニルオキシ)−エチル]−イソシアヌレート、トリメチロールプロパン トリス(3−メルカプトプロピオネート)、及びジペンタエリスリトール ヘキサキス(3−メルカプトプロピオネート)からなる群より選択される化合物であることを特徴とする異方性導電フィルム。 - 該重合開始剤が、有機過酸化物である請求項1〜6のいずれかに記載の異方性導電フィルム。
- 該導電性粒子含有層に含まれる重合開始剤が、一分間半減期温度の異なる2種類の有機過酸化物を含有し、該2種類の有機過酸化物のうち、一分間半減期温度の高い有機過酸化物が分解により安息香酸又はその誘導体を発生するものであり、該絶縁性接着層に含まれる重合開始剤が、一分間半減期温度の高い該有機過酸化物である請求項7記載の異方性導電フィルム。
- 該2種類の有機過酸化物のうち、一分間半減期温度の低い有機過酸化物がジラウロイルパーオキサイドであり、一分間半減期温度の高い有機過酸化物がジベンゾイルパーオキサイドである請求項8記載の異方性導電フィルム。
- 重合性アクリル系化合物が、リン酸エステル型アクリレートを含有し、フィルム形成樹脂が、ポリエステル樹脂、ポリウレタン樹脂又はフェノキシ樹脂を含有する請求項1〜9のいずれかに記載の異方性導電フィルム。
- 第1の配線基板の接続部と第2の配線基板の接続部との間を、請求項1〜10のいずれかに記載の異方性導電フィルムで異方性導電接続した接続構造体。
- 該第1の配線基板が、チップオンフィルム基板またはテープキャリアパッケージ基板であり、第2の配線基板がプリント配線板であり、異方性導電フィルムが請求項9記載の異方性導電フィルムであり、該異方性導電フィルムの絶縁性接着層が第1の配線基板側に配されている請求項11記載の接続構造体。
- 第1の配線基板の接続部と第2の配線基板の接続部との間に請求項1〜10のいずれかに記載の異方性導電フィルムを挟持させ、一分間半減期温度の低い有機過酸化物が分解しない第1の温度で仮貼りした後、一分間半減期温度の高い有機過酸化物が分解する第2の温度で熱圧着することを特徴とする接続構造体の製造方法。
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KR20110036733A (ko) * | 2008-07-11 | 2011-04-08 | 소니 케미카루 앤드 인포메이션 디바이스 가부시키가이샤 | 이방성 도전 필름 |
JP5734954B2 (ja) * | 2009-04-10 | 2015-06-17 | 三井化学株式会社 | 硬化可能な接着剤組成物 |
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2010
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2011
- 2011-09-15 KR KR1020127021190A patent/KR101419158B1/ko active IP Right Grant
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- 2011-09-15 US US13/575,192 patent/US20120292082A1/en not_active Abandoned
- 2011-09-15 CN CN201180011341.3A patent/CN102763283B/zh active Active
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US20120292082A1 (en) | 2012-11-22 |
WO2012063554A1 (ja) | 2012-05-18 |
TWI502045B (zh) | 2015-10-01 |
JP2011032491A (ja) | 2011-02-17 |
TW201239060A (en) | 2012-10-01 |
CN102763283B (zh) | 2015-04-08 |
KR20120113784A (ko) | 2012-10-15 |
KR101419158B1 (ko) | 2014-07-11 |
CN102763283A (zh) | 2012-10-31 |
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