JP5540916B2 - 接続構造体の製造方法 - Google Patents
接続構造体の製造方法 Download PDFInfo
- Publication number
- JP5540916B2 JP5540916B2 JP2010136180A JP2010136180A JP5540916B2 JP 5540916 B2 JP5540916 B2 JP 5540916B2 JP 2010136180 A JP2010136180 A JP 2010136180A JP 2010136180 A JP2010136180 A JP 2010136180A JP 5540916 B2 JP5540916 B2 JP 5540916B2
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- Prior art keywords
- heating
- anisotropic conductive
- temperature
- conductive adhesive
- pressing step
- Prior art date
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Classifications
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- H—ELECTRICITY
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- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0242—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections comprising means for controlling the temperature, e.g. making use of the curie point
-
- 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
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
- C09J163/10—Epoxy resins modified by unsaturated 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
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
-
- 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
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
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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
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
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- H—ELECTRICITY
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- 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
- H01L24/80—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
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
- C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
- C08G2650/56—Polyhydroxyethers, e.g. phenoxy resins
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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
- H01L2224/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L2224/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
- H01L2224/29001—Core members of the layer connector
- H01L2224/29099—Material
- H01L2224/291—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/29101—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of less than 400°C
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L2224/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
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Description
異方性導電接着剤として、溶融温度Tsのハンダ粒子が、絶縁性のアクリル系熱硬化性樹脂中に分散してなるものを使用し、異方性導電接着剤の最低溶融粘度を示す温度がTvであり、
加熱加圧工程が、第1加熱加圧工程とそれに続く第2加熱加圧工程を有し、
第1加熱加圧工程の加熱温度をT1とし、加圧圧力をP1とし、
第2加熱加圧工程の加熱温度をT2とし、加圧圧力をP2としたときに、以下の式(1)及び(2)を満足しており、
第1加熱加圧工程において、異方性導電接着剤を溶融流動させて配線基板と電気素子との間隙からプレスアウトさせ、更に予備硬化させ、
第2加熱加圧工程において、ハンダ粒子を溶融させて配線基板の電極と電気素子の電極との間に金属結合を形成させると共に異方性導電接着剤を本硬化させることを特徴とする製造方法、並びにこの製造方法により製造された接続構造体を提供する。
<加熱加圧工程>
本発明の製造方法において、異方性導電接続に使用する異方性導電接着剤としては、溶融温度Tsのハンダ粒子が最低溶融粘度温度Tvの絶縁性のアクリル系熱硬化性樹脂中に分散してペースト状あるいはフィルム状に成形されたものを使用する。
本発明の製造方法が適用できる配線基板、電気素子、電極としては、従来公知のものを使用することができる。例えば、配線基板としては、ガラス基板、セラミックス基板、ポリイミドフレキシブル基板、シリコン基板などを挙げることができる。電極としても、銅、アルミに無、銀、金等の金属電極、ITO等の金属複合酸化物電極などが挙げられる。この場合の電極形状は、特に制限はなく、パッド状でもバンプ状でもよい。また、電気素子としては、ベアチップ、チップサイズパッケージ、ICモジュール等の半導体素子、LED等の光学素子等、フレキシブル配線板等の種々の電気素子を使用することができ、その電極もパッド状でもバンプ状でもよい。
まず、異方性導電接着接着剤A及びBを以下に説明するように作成した。
ビスA型フェノキシ樹脂(YP50、新日鐵化学社)30質量部、液状アクリル化合物(EB3701、ダイセルサイテック社)30質量部、有機過酸化物硬化剤(パーオクタ0、日本油脂社)、アクリル系シランカップリング剤(A−172、モメンティブ・パフォーマンス・マテリアルズ社)1質量部を混合し、更に平均粒子径10μmの溶融温度138℃の共晶SnBiハンダを樹脂固形分中に20質量%となるように添加し、更にトルエンを加え、固形物50wt%の異方性導電組成物を作成し、剥離処理されたPETにバーコーターを用いて塗布し、70℃のオーブンで5分乾燥させ、35μm厚の異方性導電フィルムを作製した。
異方性導電フィルムAの共晶SnBiハンダを共晶SnInハンダに変えた以外は、異方性導電フィルムBと同様に作製した。
40℃に設定された平盤上に配線板(端子導体パターン幅50μm、パターンピッチ100μm)、異方性導電フィルムA又はB、更にフレキシブル配線板(端子導体パターン幅50μm、パターンピッチ100μm)を重ね、表1の条件で加熱加圧し、接続構造体を作成した。
得られた接続構造体について、隣接間ショートの発生の有無(30V、1分間チャージ)、Jedecのレベル3相当の耐湿性(30℃、70%RH、168時間)を確保できるプレッシャークッカー(PCT(60℃、95%RH))処理時間並びに熱衝撃処理(H/S(−55℃(15分)←→125℃(15分)))サイクル数を調べた。得られた結果を表1に示す。
Claims (4)
- 配線基板の電極と電気素子の電極とが異方性導電接続されてなる接続構造体を製造する方法であって、配線基板に異方性導電接着剤を介して電気素子を載置し、その電気素子を加熱加圧することにより、配線基板の電極と電気素子の電極とを接続する加熱加圧工程を有する製造方法において、
異方性導電接着剤として、溶融温度Tsのハンダ粒子が、絶縁性のアクリル系熱硬化性樹脂中に分散してなるものを使用し、異方性導電接着剤の最低溶融粘度を示す温度がTvであり、
加熱加圧工程が、第1加熱加圧工程とそれに続く第2加熱加圧工程を有し、
第1加熱加圧工程の加熱温度をT1とし、加圧圧力をP1とし、
第2加熱加圧工程の加熱温度をT2とし、加圧圧力をP2としたときに、以下の式(1)及び(2)を満足しており、
第2加熱加圧工程において、ハンダ粒子を溶融させて配線基板の電極と電気素子の電極との間に金属結合を形成させると共に異方性導電接着剤を本硬化させることを特徴とする製造方法。 - 異方性導電接着剤の最低溶融粘度を示す温度Tvが70〜150℃であり、第1加熱加圧工程の加熱温度T1が80〜160℃であり、ハンダ粒子の溶融温度Tsが100〜210℃であり、第2加熱加圧工程の加熱温度T2が130〜220℃である請求項1記載の製造方法。
- T1とTvとの差が10〜40℃であり、TsとT1との差が2〜110℃であり、T2とTsとの差が2〜100℃である請求項1又は2記載の製造方法。
- ハンダ粒子が、共晶SnBiハンダ粒子または共晶SnInハンダ粒子である請求項1〜3のいずれかに記載の製造方法。
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |