WO2012043493A1 - 異方性導電材料及びその製造方法 - Google Patents
異方性導電材料及びその製造方法 Download PDFInfo
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- WO2012043493A1 WO2012043493A1 PCT/JP2011/071921 JP2011071921W WO2012043493A1 WO 2012043493 A1 WO2012043493 A1 WO 2012043493A1 JP 2011071921 W JP2011071921 W JP 2011071921W WO 2012043493 A1 WO2012043493 A1 WO 2012043493A1
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- anisotropic conductive
- diol
- conductive material
- polycarbonate diol
- polyol
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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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- 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
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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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
- 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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/16—Non-insulated conductors or conductive bodies characterised by their form comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
Definitions
- the present invention relates to an anisotropic conductive material in which conductive particles are dispersed and a method for producing the same.
- anisotropic conductive films are used for mounting components such as semiconductors on a printed circuit board.
- polyurethane resin is excellent in stress relaxation at the time of curing and has a polar group, so that it is particularly preferably used for an acrylic anisotropic conductive film that performs pressure bonding at a low temperature for a short time (for example, patents). Reference 1 to 3).
- the polyurethane resin is produced by polymerization of a polyol (diol) and a polyisocyanate, and conventionally, a polyol having a polyester skeleton or a polyether skeleton is used as the polyol.
- the polyol having a polyester skeleton improves the adhesive force, it has low hydrolysis resistance, and the connection reliability of the anisotropic conductive film decreases under high temperature and high humidity conditions.
- the following general formula (1) shows the hydrolysis mechanism of polyester polyurethane. The ester bond of the polyester part reacts with water and decomposes into alcohol and acid.
- a polyol having a polyether skeleton exhibits good hydrolysis resistance but is inferior in hot water resistance, and similarly deteriorates in characteristics under high temperature and high humidity conditions.
- the present invention has been proposed in view of such conventional circumstances, and provides an anisotropic conductive film material excellent in connection reliability under high temperature and high humidity conditions and a method for producing the same.
- the inventors of the present invention have used a polycarbonate diol having excellent heat resistance as the polyol of the polyurethane resin raw material, and by specifying a mass ratio of the polycarbonate diol and the polyether diol, It has been found that the connection reliability under can be improved.
- the anisotropic conductive material according to the present invention is an anisotropic conductive material containing a polyurethane resin obtained by reacting a polyol and a polyisocyanate, and the polyol includes a polycarbonate diol and a polyether diol of 3: It is blended at a mass ratio of 7 to 9: 1, and the number average molecular weight of the polycarbonate diol is characterized by being larger than 500.
- the method for producing an anisotropic conductive material according to the present invention is a method for producing an anisotropic conductive material containing a polyurethane resin obtained by reacting a polyol and a polyisocyanate. Ether diol is blended at a mass ratio of 3: 7 to 9: 1, and the number average molecular weight of the polycarbonate diol is characterized by being greater than 500.
- the anisotropic conductive film is pasted on the terminal of the first electronic component, the second electronic component is temporarily disposed on the anisotropic conductive film, and the second The electronic component is pressed by a heat pressing device to connect the terminal of the first electronic component and the terminal of the second electronic component.
- the joined body according to the present invention is a joined body manufactured by the connection method.
- the polycarbonate diol having excellent heat resistance is used as the polyol of the polyurethane resin raw material, and further, by adding the polyether diol, the connection reliability under high temperature and high humidity conditions can be improved. it can.
- the anisotropic conductive material shown as a specific example of this invention contains the polyurethane resin obtained by making a polyol and polyisocyanate react.
- the polyurethane resin is a high molecular weight resin obtained by condensing an isocyanate group and an alcohol group, and has a soft segment caused by a polyol as a raw material and a hard segment caused by a polyisocyanate in a skeleton.
- the polyurethane resin in the present embodiment uses a polycarbonate diol excellent in heat resistance and moisture resistance as a polyol of a soft segment, and further improves heat resistance and adhesiveness by blending polyether diol. is there.
- polycarbonate diol one having a basic structure represented by the following general formula (2) can be used.
- R 1 and R 2 represent an alkylene group having 1 to 18 carbon atoms, and may be the same or different.
- N represents the degree of polymerization of the polycarbonate.
- Examples of the polycarbonate diol represented by the general formula (2) include ⁇ , ⁇ -poly (hexamethylene carbonate) diol, ⁇ , ⁇ -poly (3-methyl-pentamethylene carbonate) diol, and the like.
- Examples of such products include trade names: CD205, CD220 manufactured by Daicel Chemical Industries, Ltd. In this Embodiment, these can be used individually or in combination of 2 or more types.
- the number average molecular weight Mn of the polycarbonate diol is preferably larger than 500, more preferably 1000 or more and 5000 or less.
- the number average molecular weight Mn of the polycarbonate polyol is 500 or less, the crosslinking density of the polyurethane is increased and the adhesive strength is decreased.
- the number average molecular weight Mn of polycarbonate polyol exceeds 5000, the protrusion after reel processing by the increase in elongation occurs and the solvent solubility of the polyurethane resin decreases.
- the number average molecular weight Mn of the polycarbonate diol can be obtained by preparing a calibration curve of a standard sample in advance by, for example, GPC (Gel Permeation Chromatography) measurement.
- polyether diol examples include poly (ethylene glycol), poly (propylene glycol), poly (tetramethylene glycol), poly (methyltetramethylene glycol), and the like. These may be used alone or in combination of two or more. Can be used.
- the heat resistance of the anisotropic conductive material is lowered and the adhesiveness is increased. Also decreases.
- hard segment polyisocyanate those conventionally used in the production of polyurethane can be used.
- aliphatic polyisocyanate hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, etc.
- alicyclic diisocyanate cyclohexane 1,4-diisocyanate, isophorone diisocyanate, etc.
- aromatic polyisocyanate phenylene diisocyanate, 2,4-triisocyanate
- Range isocyanate etc. can be used alone or in combination of two or more.
- polyisocyanate is less than 100 parts by mass with respect to 1000 parts by mass of the polyol, and when the polyisocyanate exceeds 400 parts by mass with respect to 1000 parts by mass of the polyol, good stress relaxation properties of the polyurethane resin cannot be obtained at the time of curing. .
- anisotropic conductive material in the present embodiment contains a radical polymerizable substance, a curing agent, and conductive particles.
- the radical polymerizable substance is a substance having a functional group that is polymerized by radicals, and examples thereof include acrylate, methacrylate, and maleimide compounds. Any of these may be used alone or in combination of two or more. Moreover, the radically polymerizable substance can be used in any state of a monomer and an oligomer, and the monomer and the oligomer can be used in combination.
- an acrylate capable of being pressed at a low temperature for a short time is suitably used as the radical polymerizable substance.
- the acrylate include methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylolpropane triacrylate, dimethylol tricyclodecane diacrylate, tetramethylene glycol tetraacrylate, 2-hydroxy-1,3-diaacryloxypropane, 2,2-bis [4- (acryloxymethoxy) phenyl] propane, 2,2-bis [4- (acryloxyethoxy) phenyl] propane, dicyclopentenyl
- examples include acrylate, tricyclodecanyl acrylate, tris (acryloxyethyl) isocyanurate, and urethane acrylate. These may be used individually by 1 type and may use 2 or more
- the curing agent decomposes by heating to generate free radicals, and examples thereof include peroxide compounds and azo compounds.
- peroxide compounds include peroxide compounds and azo compounds.
- an organic peroxide is preferably used.
- organic peroxide examples include diacyl peroxide, peroxydicarbonate, peroxyester, peroxyketal, dialkyl peroxide, hydroperoxide, silyl peroxide, and the like. These may be used individually by 1 type and may use 2 or more types together. Further, those obtained by encapsulating them are preferable because the pot life is extended.
- the compounding amount of these adhesive components is 2 to 75 parts by mass of polyurethane resin, 30 to 60 parts by mass of radically polymerizable substance, and 0.1 to 30 parts by mass of curing agent as in the case of ordinary anisotropic conductive materials. It is.
- the compounding quantity of these components can be suitably determined within the above-mentioned range.
- the blending amount of the polyurethane resin is less than 2 parts by mass, the effect of stress relaxation at the time of curing the anisotropic conductive material or at the time of heat load is poor and the adhesive strength is lowered. Moreover, when it exceeds 75 weight part, there exists a possibility that connection reliability may fall.
- silane coupling agent epoxy, amino, mercapto sulfide, ureido, and the like can be used. Thereby, the adhesiveness in the interface of an organic material and an inorganic material can be improved.
- an inorganic filler silica, talc, titanium oxide, calcium carbonate, magnesium oxide and the like can be used, and the kind of the inorganic filler is not particularly limited. Depending on the content of the inorganic filler, the fluidity can be controlled and the particle capture rate can be improved. A rubber component or the like can also be used as appropriate for the purpose of relaxing the stress of the bonded body.
- the conductive particles can be used as long as they are electrically good conductors, and examples thereof include particles in which metal powder such as copper, silver, nickel, or resin is coated with the above metal. Moreover, you may use what coat
- the blending amount is preferably 0.1 to 30% by volume with respect to the adhesive component, and can be appropriately determined according to the application.
- an isocyanate-terminated urethane prepolymer is added to amines, reacted at 30 to 100 ° C., and chain-extended to obtain a polycarbonate polyurethane resin solution (polyurethane resin).
- amines examples include isophorone diamine, di-n-butylamine, ethylene diamine, 1,2-propane diamine, and the like. These may be used alone or in combination of two or more. Also good.
- the polyurethane resin, the radical polymerizable substance, and the curing agent are mixed in a range of 2 to 75:30 to 60: 0.1 to 30. It mix
- conductive particles are dispersed at a volume ratio of 0.1 to 30% with respect to the insulating binder to obtain an anisotropic conductive material.
- anisotropic conductive film When producing a sheet-like anisotropic conductive film, apply the above-mentioned anisotropic conductive material on a release substrate such as PET (Poly Ethylene Terephthalate) coated with a release agent such as silicone.
- the anisotropic conductive material is dried using a heat oven, a heat drying apparatus, or the like to form a layer having a predetermined thickness.
- the electronic component connection method in the present embodiment is a method in which the anisotropic conductive material described above is pasted on the terminal of the first electronic component, the second electronic component is temporarily disposed on the anisotropic conductive material, and the second The terminal of the first electronic component and the terminal of the second electronic component are connected by being pressed from above the electronic component by a heat pressing device. Thereby, the connection body by which the terminal of the 1st electronic component and the terminal of the 2nd electronic component were connected via the electroconductive particle disperse
- the anisotropic conductive material in the present embodiment uses a polycarbonate diol with excellent heat resistance as a polyol of a polyurethane resin raw material, and further contains a polyether diol, so that the connection resistance even under high temperature and high humidity conditions. And it can prevent that adhesive strength falls.
- Example> Examples of the present invention will be described below, but the present invention is not limited to these examples.
- mounting bodies were produced using the sheet-like connecting materials of Examples 1 to 9 and Comparative Examples 1 to 7, and the connection resistance and adhesive strength of the mounting bodies were measured and evaluated.
- Mn 2000, trade name: Exenol 2020, manufactured by Asah
- a radical polymerizable substance (trade name: EB600, manufactured by Daicel Cytec Co., Ltd.) and a curing agent (trade name: Perhexa C, manufactured by NOF Corporation).
- An insulating binder was prepared by blending at a mass ratio of Then, conductive particles (trade name: AUL704, manufactured by Sekisui Chemical Co., Ltd.) are dispersed in an insulating binder at a volume ratio of 10%, and applied to a PET film and dried to form a sheet-like connecting material having a thickness of 20 ⁇ m. Was made.
- Example 1 A sheet-like connecting material was produced in the same manner as in Example 1 except that 1000 parts by mass of polyester diol (Kurapol P2010, manufactured by Kuraray Co., Ltd.) was blended instead of polycarbonate diol and polyether diol.
- Mn 2000, trade name: Exenol 2020, manufactured by Asahi Glass Urethane Co., Ltd.
- Mn 2000, trade name: Plaxel CD220, manufactured by Daicel Chemical Industries, Ltd.
- connection resistance value and the adhesive strength were measured and evaluated for each mounting body thus obtained.
- Table 1 shows the evaluation results.
- the measurement of connection resistance value and adhesive strength was performed as follows.
- connection resistance value was evaluated.
- the connection resistance value at the initial stage and after 85 ° C./85%/500 hours was input was measured using a digital multimeter (manufactured by Yokogawa Electric Corporation). The measurement was performed using a 4-terminal method with a current of 1 mA flowing.
Abstract
Description
1.異方性導電材料
2.異方性導電材料の製造方法
3.接続方法
4.実施例
本発明の具体例として示す異方性導電材料は、ポリオールとポリイソシアネートとを反応させて得られるポリウレタン樹脂を含有するものである。
次に、上述した異方性導電材料の製造方法について説明する。先ず、ポリウレタン樹脂のソフトセグメントのポリオールとして、ポリカーボネートジオールとポリエーテルジオールとを3:7~9:1の質量比で配合し、ソフトセグメント(ポリオール)とハードセグメント(ポリイソシアネート)との仕込み質量比が、(ポリオール):(ポリイソシアネート)=1000:100~1000:400の範囲となるように、ソフトセグメントとハードセグメントとを配合する。これらを反応炉で、窒素気流下、30~100℃で反応させて、イソシアネート末端ウレタンプレポリマーを得る。
次に、上述した異方性導電材料を用いた電子部品の接続方法について説明する。本実施の形態における電子部品の接続方法は、第1の電子部品の端子上に上述した異方性導電材料を貼付け、異方性導電材料上に第2の電子部品を仮配置させ、第2の電子部品上から加熱押圧装置により押圧し、第1の電子部品の端子と、前記第2の電子部品の端子とを接続させるものである。これにより、異方性導電材料に分散された導電性粒子を介して第1の電子部品の端子と第2の電子部品の端子とが接続された接続体が得られる。
以下、本発明の実施例について説明するが、本発明はこれらの実施例に限定されるものではない。ここでは、実施例1~9及び比較例1~7のシート状接続材料を用いて実装体を作製し、実装体の接続抵抗及び接着強度を測定し、評価した。
先ず、撹拌機、温度計、冷却器、及び窒素ガス導入管を備えた4ツ口フラスコに、ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)300質量部と、ポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)700質量部と、イソホロンジシソシアネート200質量部とを配合し、窒素気流下、80℃で5時間反応させて、イソシアネート末端ウレタンプレポリマーを得た。これにトルエン512質量部を加えてウレタンプレポリマー溶液とした。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を400質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を600質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を500質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を600質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を400質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を700質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を300質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を800質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を200質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=1000、商品名:プラクセルCD210、ダイセル化学工業(株)製)を500質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=5000、商品名:クラレポリオール C-5090、クラレ(株)製)を500質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を500質量部、ポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部、及びイソホロンジシソシアネート400質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール及びポリエーテルジオールの代わりに、ポリエステルジオール(クラポールP2010、クラレ(株)製)を1000質量部配合した以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオールを配合せずに、ポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を1000質量部配合した以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を1000質量部配合し、ポリエーテルジオールを配合しない以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を200質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を800質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=2000、商品名:プラクセルCD220、ダイセル化学(株)製)を500質量部配合し、ポリエーテルジオールを配合せずに、ポリエステルジオール(クラポールP2010、クラレ(株)製)を500質量部配合した以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオールを配合せずに、ポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部、及びポリエステルジオール(クラポールP2010、クラレ(株)製)を500質量部配合した以外は、実施例1と同様にしてシート状接続材料を作製した。
ポリカーボネートジオール(Mn=500、商品名:プラクセルCD205、ダイセル化学(株)製)を500質量部、及びポリエーテルジオール(Mn=2000、商品名:エクセノール2020、旭硝子ウレタン(株)製)を500質量部とした以外は、実施例1と同様にしてシート状接続材料を作製した。
実施例1~9及び比較例1~7のシート状接続材料をそれぞれ1.5mmにスリットし、これを緩衝材150μm厚のテフロンを用いたツール幅1.5mmの仮圧着機にて70℃-1MPa-1secの条件、ガラス基板(IZO、厚さ250nm)上に仮圧着させた。
各実装体について、プレッシャークッカー試験(PCT)を行って接続抵抗値を評価した。初期及び85℃/85%/500hr投入後の接続抵抗値は、デジタルマルチメータ(横河電機社製)を用いて測定した。測定は、4端子法を用い、電流1mAを流して行った。
各実装体について、プレッシャークッカー試験(PCT)を行って接着強度を評価した。初期及び85℃/85%/500hr投入後の接着強度は、引張試験機(AMD社製)を用いて測定した。測定は、90℃の温度において50mm/secの速度でCOFを引き上げて行った。
Claims (7)
- ポリオールとポリイソシアネートとを反応させて得られるポリウレタン樹脂を含有する異方性導電材料において、
前記ポリオールは、ポリカーボネートジオールとポリエーテルジオールとが3:7~9:1の質量比で配合され、
前記ポリカーボネートジオールの数平均分子量が、500より大きい異方性導電材料。 - 前記ポリカーボネートジオールの数平均分子量が、1000以上5000以下である請求項1記載の異方性導電材料。
- 前記ポリオールと前記ポリイソシアネートとが、1000:100~1000:400の仕込み質量比で配合されている請求項1又は2記載の異方性導電材料。
- ラジカル重合性物質と、硬化剤と、導電性粒子とを含有し、
前記ラジカル重合性物質が、アクリレートである請求項1乃至3のいずれかに記載の異方性導電材料。 - ポリオールとポリイソシアネートとを反応させて得られるポリウレタン樹脂を含有する異方性導電材料の製造方法において、
前記ポリオールとして、ポリカーボネートジオールとポリエーテルジオールとを、3:7~9:1の質量比で配合し、前記ポリカーボネートジオールの数平均分子量が、500より大きい異方性導電材料の製造方法。 - 第1の電子部品の端子上に請求項1乃至4のいずれかに記載の異方性導電材料を貼付け、
前記異方性導電フィルム上に第2の電子部品を仮配置させ、
前記第2の電子部品上から加熱押圧装置により押圧し、
前記第1の電子部品の端子と、前記第2の電子部品の端子とを接続させる接続方法。 - 請求項6記載の接続方法により製造される接合体。
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WO2001015505A1 (en) * | 1999-08-25 | 2001-03-01 | Hitachi Chemical Company, Ltd. | Wiring-connecting material and process for producing circuit board with the same |
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