WO2012057227A1 - 電子部品の接続方法及び接続構造体 - Google Patents
電子部品の接続方法及び接続構造体 Download PDFInfo
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- WO2012057227A1 WO2012057227A1 PCT/JP2011/074718 JP2011074718W WO2012057227A1 WO 2012057227 A1 WO2012057227 A1 WO 2012057227A1 JP 2011074718 W JP2011074718 W JP 2011074718W WO 2012057227 A1 WO2012057227 A1 WO 2012057227A1
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- layer
- insulating resin
- conductive film
- electronic component
- region
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
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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
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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
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
-
- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- B32B27/14—Layered products comprising a layer of synthetic resin next to a particulate layer
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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
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- 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
-
- 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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- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
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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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- 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
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
- H05K7/06—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses
-
- 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
- B32B2457/00—Electrical equipment
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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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
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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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31511—Of epoxy ether
- Y10T428/31529—Next to metal
Definitions
- the present invention relates to a connection method and a connection structure for connecting electronic components via an anisotropic conductive film in which conductive particles are dispersed.
- substrates such as LCD (Liquid Crystal Display) panels and PD (Plasma Display) panels and wiring materials such as FPC (Flexible Printed Circuits), COF (Chip On Film), and TCP (Tape Carrier Package) are different.
- the conductive film (ACF: AnisotropicAConductive Film) is used for connection.
- a circuit protective material (solder resist) for protecting the circuit is formed on the wiring material, and the resist layer is pressure-bonded in contact with the anisotropic conductive film, thereby improving the connection strength and between the wirings.
- the circuit protective material when the circuit protective material is pressure-bonded in contact with the anisotropic conductive film, the flowing conductive particles are clogged at the end of the circuit protective material, and a short circuit may occur between adjacent connection terminals.
- conductive particles may be clogged between the circuit protection material and the substrate, and the resin may not be sufficiently removed by pressing, resulting in an increase in connection resistance between the connection terminals.
- the present invention has been proposed in view of such a conventional situation, and provides an electronic component connection method and a connection structure capable of obtaining high connection reliability.
- an electronic component connection method includes an insulating resin layer that does not include conductive particles in an insulating resin on a first electronic component on which a connection terminal is formed.
- An anisotropic conductive film having a single-layer region and a two-layer electric region composed of the insulating resin layer and a conductive particle-containing layer in which conductive particles are dispersed in the insulating resin.
- a single-layer area of the anisotropic conductive film The boundary between the circuit protection region and the terminal region of the second electronic component is located above, and the terminal region of the second electronic component is located on the two-layer region of the anisotropic conductive film. It is characterized by temporarily installing an anisotropic conductive film.
- connection structure according to the present invention is characterized in that the first electronic component and the second electronic component are electrically connected by the connection method described above.
- the anisotropic conductive film according to the present invention includes a single layer region composed of an insulating resin layer in which the conductive resin does not contain conductive particles, and conductive particles dispersed in the insulating resin layer and the insulating resin. And a two-layer region comprising a conductive particle-containing layer.
- the method for producing an anisotropic conductive film according to the present invention includes an insulating resin layer in which conductive particles are not contained in the insulating resin, and a conductive particle-containing layer in which conductive particles are dispersed in the insulating resin.
- a single-layer region composed of the insulating resin layer and a two-layer region composed of the insulating resin layer and the conductive particle-containing layer are formed by bonding.
- the present invention it is possible to prevent the conductive particles from reaching the circuit protective material during the thermocompression bonding. Therefore, it is possible to prevent the conductive particles from clogging the end portions of the circuit protective material between the adjacent connection terminals. Short circuit can be prevented from occurring. Further, it is possible to prevent the conductive particles from being clogged between the circuit protection material and the substrate, and the resin can be sufficiently eliminated by pressing, so that the connection resistance between the connection terminals can be prevented from increasing.
- FIG. 1A and 1B are diagrams for explaining a method of mounting an electronic component according to an embodiment of the present invention.
- 2A and 2B are diagrams for explaining a conventional electronic component mounting method.
- FIG. 3 is a cross-sectional view showing an anisotropic conductive film according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating an example of a method for producing an anisotropic conductive film.
- FIG. 5A to FIG. 5C are diagrams for explaining a method of mounting an electronic component in the first to third embodiments.
- 6A to 6C are diagrams for explaining a mounting method of electronic components in Comparative Examples 1 to 3.
- FIG. 7A to 7C are diagrams for explaining a mounting method of electronic components in Comparative Examples 4 to 6.
- FIG. 1 is a diagram for explaining a method of connecting electronic components according to the present embodiment.
- the electronic component connecting method shown as a specific example is an anisotropic method in which the conductive particle-containing layer 21 and the insulating resin layer 22 are provided between the terminal of the first electronic component 11 and the terminal of the second electronic component 12.
- the terminals of the first electronic component 11 and the terminals of the second electronic component 12 are connected by interposing the conductive conductive film 20 and heating and pressing them.
- the first electronic component 11 is, for example, a glass substrate such as an LCD (Liquid Crystal Display) panel or a PD (Plasma Display) panel, and a terminal for connecting to the second electronic component 12 is formed.
- a glass substrate such as an LCD (Liquid Crystal Display) panel or a PD (Plasma Display) panel
- a terminal for connecting to the second electronic component 12 is formed.
- the second electronic component 12 is, for example, a wiring material such as FPC (Flexible Printed Circuits), COF (Chip On Film), TCP (Tape Carrier Package), and a terminal for connecting to the first electronic component 11 is used. Is formed. Further, the second electronic component 12 is provided with a circuit protective material (solder resist) 13 for protecting the terminal circuit, and includes a circuit protective region 14 where the circuit protective material 13 is formed and a terminal region 15 where the terminal is exposed. Is formed.
- FPC Flexible Printed Circuits
- COF Chip On Film
- TCP Transmission Carrier Package
- the anisotropic conductive film 20 includes a conductive particle-containing layer 21 in which conductive particles are dispersed in an insulating resin, and an insulating resin layer 22 in which the conductive resin is not included in the insulating resin. It is configured.
- the anisotropic conductive film 20 includes a single-layer region 23 having a single-layer structure of the insulating resin layer 22 and a two-layer region 24 having a two-layer structure of the conductive particle-containing layer 21 and the insulating resin layer 22. And have.
- the electronic component connecting method in the present embodiment is a temporary installation in which the anisotropic conductive film 20 is temporarily installed on the first electronic component 11 and the second electronic component 12 is temporarily installed on the anisotropic conductive film 20.
- the boundary 16 between the circuit protection region 14 and the terminal region 15 of the second electronic component 12 is located on the single-layer region 23 of the anisotropic conductive film 20, and is anisotropic.
- the anisotropic conductive film 20 is temporarily installed so that the terminal region 15 of the second electronic component 12 is positioned on the two-layer region 24 of the conductive conductive film 20. More preferably, the anisotropic conductive film 20 is placed so that the boundary 16 between the circuit protection region 14 and the terminal region 15 of the second electronic component 12 is positioned at the center of the single layer region 24 of the anisotropic conductive film 20.
- Temporary installation Thereby, high connection reliability can be obtained.
- the anisotropic resin layer 22 is anisotropic so that it is on the flexible substrate side.
- connection terminals are connected in a state where the conductive particles do not reach the circuit protection member 13 at the portion a of the boundary 16 between the circuit protection region 14 and the terminal region 15. .
- the conductive particles can be prevented from clogging the end portions of the circuit protection member 13, and a short circuit can be prevented from occurring between adjacent connection terminals.
- FIG. 2 is a diagram for explaining a conventional electronic component mounting method.
- an anisotropic conductive film having a two-layer structure of a conductive particle-containing layer 31 and an insulating resin layer 32 is used.
- a conductive particle-containing layer 31 exists on the boundary 16 between the protective region 14 and the terminal region 15. Therefore, as shown in FIG. 2B, due to the flow of the conductive particles at the time of thermocompression bonding, the conductive particles are clogged at the end of the circuit protective material 13, and a short circuit occurs between adjacent connection terminals. Also. Conductive particles are clogged between the circuit protection material 13 and the substrate 11, and the resin is not sufficiently removed by pressing, and the connection resistance between the connection terminals is increased.
- FIG. 3 is a cross-sectional view showing an anisotropic conductive film according to an embodiment of the present invention.
- the anisotropic conductive film 20 includes a conductive particle-containing layer 21 in which conductive particles are dispersed in an insulating resin, and an insulating resin layer 22 in which the conductive resin is not included in the insulating resin. .
- the anisotropic conductive film 20 includes a single-layer region 23 having a single-layer structure of the insulating resin layer 22 and a two-layer region 24 having a two-layer structure of the conductive particle-containing layer 21 and the insulating resin layer 22. And have.
- the width of the conductive particle-containing layer 21 is formed smaller than the width of the insulating resin layer 22, and one end in the width direction of the conductive particle-containing layer 21 is the same as the end of the insulating resin layer 22. It is pasted at the same position. That is, the length in the width direction of the single layer region 23 is the difference in the width direction between the conductive particle-containing layer 21 and the insulating resin layer 22.
- the difference in the width direction between the conductive particle-containing layer 21 and the insulating resin layer 22 is preferably 100 to 500 ⁇ m. More preferably, the thickness is 100 to 300 ⁇ m. Since the difference in the width direction between the conductive particle-containing layer 21 and the insulating resin layer 22 is 100 to 500 ⁇ m, the conductivity generated at the end of the circuit protection material 13 due to the flow of the conductive particle-containing layer 21 during thermocompression bonding. The clogging of the conductive particles can be prevented.
- the conductive particle-containing layer 21 of the anisotropic conductive film 20 contains at least a film-forming resin, a thermosetting resin, a curing agent, and conductive particles.
- the film-forming resin corresponds to a high molecular weight resin having an average molecular weight of 10,000 or more, and preferably has an average molecular weight of about 10,000 to 80,000 from the viewpoint of film formation.
- the film forming resin include various resins such as phenoxy resin, polyester urethane resin, polyester resin, polyurethane resin, acrylic resin, polyimide resin, butyral resin, and these may be used alone or in combination of two or more. You may use it in combination.
- phenoxy resin is preferably used from the viewpoints of film formation state, connection reliability, and the like.
- thermosetting resin an epoxy resin, a liquid epoxy resin having fluidity at room temperature, or the like may be used alone, or two or more kinds may be mixed and used.
- the epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, novolac type epoxy resin, various modified epoxy resins such as rubber and urethane, etc. These are used alone or in combination of two or more. May be.
- Liquid epoxy resins include bisphenol type epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin, phenol novolac type epoxy resin, stilbene type epoxy resin, triphenolmethane type epoxy resin, phenol aralkyl type epoxy resin, and naphthol type epoxy resin. Resin, dicyclopentadiene type epoxy resin, triphenylmethane type epoxy resin and the like can be used, and these may be used alone or in combination of two or more.
- the curing agent is not particularly limited and can be appropriately selected depending on the purpose.
- a latent curing agent that is activated by heating a latent curing agent that generates free radicals by heating, or the like can be used.
- the latent curing agent activated by heating include anionic curing agents such as polyamine and imidazole, and cationic curing agents such as sulfonium salts.
- 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
- silane coupling agent epoxy, amino, mercapto sulfide, ureido, and the like can be used. Among these, in this Embodiment, an epoxy-type silane coupling agent is used preferably. Thereby, the adhesiveness in the interface of an organic material and an inorganic material can be improved. Moreover, you may add an inorganic filler. As the 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 insulating resin layer 22 of the anisotropic conductive film 20 contains a film-forming resin, a thermosetting resin, and a curing agent.
- a film-forming resin, the thermosetting resin, and the curing agent the same material as the conductive particle-containing layer 21 can be used.
- additive compositions such as a silane coupling agent, an inorganic filler, and a rubber component, similarly to the electroconductive particle content layer 21.
- the anisotropic conductive film 20 described above is manufactured by laminating a conductive particle-containing layer 21 and an insulating resin layer 22. Specifically, a forming step of applying the resin composition of the conductive particle-containing layer 21 on the release substrate, drying to form the conductive particle-containing layer 21, and similarly forming the insulating resin layer 22; And a bonding step of bonding the conductive particle-containing layer 21 and the insulating resin layer 22 together.
- the resin composition of the conductive particle-containing layer 21 or the insulating resin layer 22 is applied onto the peeling substrate using a bar coater, a coating apparatus, or the like, and the resin composition on the peeling substrate is heated in a thermal oven. Then, a layer having a predetermined thickness is formed by drying using a heat drying apparatus or the like.
- the conductive particle-containing layer 21 and the insulating resin layer 22 having a predetermined thickness formed in the forming step are bonded and laminated.
- the conductive particle-containing resin tape 41 produced by winding the conductive particle-containing layer 21 on a reel, and the insulating resin layer 22 having a predetermined width larger than the conductive particle-containing layer 21 are reeled.
- an insulating resin tape 42 wound around the sheet is passed through a bonding apparatus 43 to be bonded, wound, and anisotropic having a single layer region 23 made of an insulating resin layer 22 having a predetermined width on one side in the width direction.
- a conductive film tape 44 is produced.
- the insulating resin layer 22 is formed by apply
- the particle containing layer 21 may be formed.
- an anisotropic conductive film may be produced by bonding a rectangular conductive particle-containing layer 21 film and an insulating resin layer 22 film cut to an arbitrary width.
- Example> Examples of the present invention will be described below.
- a conductive particle-containing layer and an insulating resin layer were prepared, and these were bonded together to prepare a two-layer anisotropic conductive film.
- substrate were thermocompression bonded through the anisotropic conductive film, the mounting body was produced, and the particle
- the present invention is not limited to these examples.
- [Preparation of conductive particle-containing layer] 45 parts by mass of phenoxy resin (product name: PKHC, manufactured by Sakai Kogyo Co., Ltd.), 50 parts by mass of radical polymerizable resin (product name: EB-600, manufactured by Daicel-Cytec), hydrophobic silica (product names: AEROSIL 972, manufactured by EVONIK) ), 3 parts by mass of a silane coupling agent (product name: KBM-503, manufactured by Shin-Etsu Chemical Co., Ltd.) and 3 parts by mass of a reaction initiator (product name: Perhexa C, manufactured by NOF Corporation).
- phenoxy resin product name: PKHC, manufactured by Sakai Kogyo Co., Ltd.
- EB-600 radical polymerizable resin
- hydrophobic silica product names: AEROSIL 972, manufactured by EVONIK
- a silane coupling agent product name: KBM-503, manufactured by Shin-Etsu Chemical Co., Ltd
- a composition obtained by dispersing conductive particles (product name: AUL704, manufactured by Sekisui Chemical Co., Ltd.) so as to have a particle density of 6000 particles / mm 2 is applied onto a release substrate with a bar coater.
- the resin composition was dried in a hot oven to obtain a conductive particle-containing layer having a thickness of 8 ⁇ m.
- Preparation of insulating resin layer 55 parts by mass of phenoxy resin (product name: PKHC, manufactured by Sakai Kogyo Co., Ltd.), 45 parts by mass of radical polymerizable resin (product name: EB-600, manufactured by Daicel Cytec Co., Ltd.), and a reaction initiator (product name: Perhexa C, Japan)
- PKHC phenoxy resin
- EB-600 radical polymerizable resin
- reaction initiator product name: Perhexa C, Japan
- a resin composition containing 3 parts by mass of Ogyu Co., Ltd. was applied onto a release substrate with a bar coater, and the resin composition on the release substrate was dried with a thermal oven to obtain an insulating resin layer having a thickness of 8 ⁇ m. .
- the conductive particle-containing layer was slit to a width of 1.2 mm and wound on a reel to produce a conductive particle-containing layer tape. Further, the insulating resin layer was slit to a width of 1.5 mm and wound on a reel to produce an insulating resin layer tape.
- a conductive particle-containing layer tape and an insulating resin layer tape are passed through a laminating apparatus, bonded, wound, and a single layer region composed of an insulating resin layer having a width of 0.3 mm on one side in the width direction and a width of 1.2 mm. An anisotropic conductive film having a two-layer region was produced.
- the first electronic component is a COF with an ITO coated glass (entire ITO coat, glass thickness 0.7 mm, chamfering 0.3 mm) as a glass substrate and a solder resist as a flexible wiring substrate as a second electronic component ( 50 ⁇ m P, Cu 8 ⁇ mt-Sn plating, S / R PI system, PI 38 ⁇ mt-SuperFlex substrate) were used to bond ITO coated glass and COF.
- An anisotropic film is temporarily pasted at a predetermined position on the ITO coating glass, COF is temporarily fixed thereon, and then a heat tool having a width of 150 mm and a 1.5 mm width heat tool coated with 150 ⁇ mt Teflon is used. Bonding was performed under a bonding condition of ⁇ 4 MPa ⁇ 10 sec to complete the mounting body.
- FIG. 5A is a cross-sectional view for explaining the electronic component mounting method according to the first embodiment.
- a 1.2 mm width conductive particle-containing layer 61 and a 1.5 mm width insulating resin layer 62 are bonded together through a bonding apparatus, and a single layer made of a 0.3 mm width insulating resin layer 62 is formed.
- a step anisotropic conductive film having a region 63 and a two-layer region 64 having a two-layer structure having a width of 1.2 mm was used.
- the anisotropic conductive film is placed so that the boundary 56 between the circuit protection region 54 and the terminal region 55 coincides with the boundary between the single-layer region 63 and the two-layer region 64 of the anisotropic conductive film.
- Temporarily pasted That is, the anisotropic conductive film was temporarily attached so that the step anisotropic conductive film and the solder resist 53 overlap each other by 0.3 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.24 ⁇ , and the conduction resistance after the TH test was 1.47 ⁇ . Moreover, the short circuit number was 0 and the adhesive strength was 6.6 N / cm. Table 1 shows these results.
- FIG. 5B is a cross-sectional view for explaining the electronic component mounting method according to the second embodiment.
- the 1.2 mm wide conductive particle-containing layer 61 and the 1.5 mm wide insulating resin layer 62 are bonded together through a bonding apparatus, and the 0.3 mm wide insulating resin layer 62 is bonded.
- the step anisotropic conductive film which has the single layer area
- the step anisotropic conductive film was temporarily pasted so that the boundary 56 between the circuit protection region 54 and the terminal region 55 was the center of the single layer region 63 of the anisotropic conductive film. That is, the anisotropic conductive film was temporarily attached so that the step anisotropic conductive film and the solder resist 53 overlap each other by 0.15 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.11 ⁇ , and the conduction resistance after the TH test was 1.32 ⁇ . Moreover, the short circuit number was 0 and the adhesive strength was 6.5 N / cm. Table 1 shows these results.
- FIG. 5C is a cross-sectional view for explaining the electronic component mounting method according to the third embodiment.
- the 1.2 mm wide conductive particle-containing layer 61 and the 1.5 mm wide insulating resin layer 62 are bonded together through a bonding apparatus, and the 0.3 mm wide insulating resin layer 62 is bonded.
- the step anisotropic conductive film which has the single layer area
- the step anisotropic conductive film is placed so that the boundary 56 between the circuit protection region 54 and the terminal region 55 is the end of the anisotropic conductive film, that is, the end of the insulating resin layer 62. Temporarily pasted. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.12 ⁇ , and the conduction resistance after the TH test was 1.34 ⁇ .
- the number of shorts was 0, and the adhesive strength was 5.8 N / cm. Table 1 shows these results.
- FIG. 6A is a cross-sectional view for explaining a mounting method of an electronic component in Comparative Example 1.
- FIG. Here, the conductive particle containing layer 71 having a width of 1.5 mm and the insulating resin layer 72 having a width of 1.5 mm are bonded through a bonding apparatus, and the anisotropic conductive material having a two-layer structure having a width of 1.5 mm. A film was used.
- an anisotropic conductive film was temporarily pasted on the boundary 56 between the circuit protection region 54 and the terminal region 55. Specifically, the anisotropic conductive film was temporarily attached so that the anisotropic conductive film and the solder resist 53 overlap each other by 0.3 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.37 ⁇ , and the conduction resistance after the TH test was 1.82 ⁇ .
- the short number was 4 and the adhesive strength was 6.4 N / cm. Table 1 shows these results.
- FIG. 6B is a cross-sectional view for explaining the electronic component mounting method in Comparative Example 2. Similar to Comparative Example 1, the conductive particle-containing layer 71 having a width of 1.5 mm and the insulating resin layer 72 having a width of 1.5 mm are bonded through a bonding apparatus to have a two-layer structure having a width of 1.5 mm. An anisotropic conductive film was used.
- an anisotropic conductive film was temporarily pasted on the boundary 56 between the circuit protection region 54 and the terminal region 55. Specifically, the anisotropic conductive film was temporarily attached so that the anisotropic conductive film and the solder resist 53 overlap each other by 0.15 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.34 ⁇ , and the conduction resistance after the TH test was 1.79 ⁇ . Further, the number of shorts was 3, and the adhesive strength was 6.5 N / cm. Table 1 shows these results.
- FIG. 6C is a cross-sectional view for explaining the electronic component mounting method in Comparative Example 3. Similar to Comparative Example 1, the conductive particle-containing layer 71 having a width of 1.5 mm and the insulating resin layer 72 having a width of 1.5 mm are bonded through a bonding apparatus to have a two-layer structure having a width of 1.5 mm. An anisotropic conductive film was used.
- an anisotropic conductive film was temporarily pasted on the boundary 56 between the circuit protection region 54 and the terminal region 55. Specifically, the anisotropic conductive film was temporarily attached so that the boundary 56 between the circuit protection region 54 and the terminal region 55 was an end portion of the anisotropic conductive film. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.22 ⁇ , and the conduction resistance after the TH test was 1.45 ⁇ . Further, the number of shorts was 2, and the adhesive strength was 5.9 N / cm. Table 1 shows these results.
- FIG. 7A is a cross-sectional view for explaining a method of mounting an electronic component in Comparative Example 4.
- a conductive particle containing layer 81 having a width of 1.5 mm and an insulating resin layer 82 having a width of 1.3 mm are bonded through a bonding apparatus, and a single layer made of the conductive particle containing layer 81 having a width of 0.2 mm is formed.
- An anisotropic conductive film having a layer region 83 and a two-layer region 84 having a 1.3-mm width two-layer structure was used.
- an anisotropic conductive film was temporarily pasted on the boundary 56 between the circuit protection region 54 and the terminal region 55. Specifically, the anisotropic conductive film was temporarily attached so that the anisotropic conductive film and the solder resist 53 overlap each other by 0.3 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.23 ⁇ , and the conduction resistance after the TH test was 1.45 ⁇ .
- the short number was 4 and the adhesive strength was 6.4 N / cm. Table 1 shows these results.
- FIG. 7B is a cross-sectional view for explaining the electronic component mounting method in Comparative Example 5.
- the 1.5 mm wide conductive particle-containing layer 81 and the 1.3 mm wide insulating resin layer 82 are bonded together through a bonding apparatus, and the 0.2 mm wide conductive particle-containing layer is bonded.
- An anisotropic conductive film having a single-layer region 83 made of 81 and a two-layer region 84 having a two-layer structure with a width of 1.3 mm was used.
- the boundary 56 between the circuit protection region 54 and the terminal region 55 coincides with the boundary between the single-layer region 83 and the two-layer region 84 made of the conductive particle-containing layer 81 of the anisotropic conductive film.
- an anisotropic conductive film was temporarily attached. That is, the anisotropic conductive film was temporarily attached so that the anisotropic conductive film and the solder resist 53 overlap each other by 0.2 mm. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.10 ⁇ , and the conduction resistance after the TH test was 1.31 ⁇ .
- the short number was 4 and the adhesive strength was 5.7 N / cm. Table 1 shows these results.
- FIG. 7C is a cross-sectional view for explaining the electronic component mounting method in Comparative Example 6.
- the 1.5 mm wide conductive particle-containing layer 81 and the 1.3 mm wide insulating resin layer 82 are bonded together through a bonding apparatus, and the 0.2 mm wide conductive particle-containing layer is bonded.
- An anisotropic conductive film having a single-layer region 83 made of 81 and a two-layer region 84 having a two-layer structure with a width of 1.3 mm was used.
- the anisotropic conductive film is placed so that the boundary 56 between the circuit protection region 54 and the terminal region 55 is the end of the anisotropic conductive film, that is, the end of the conductive particle-containing layer 81. Temporarily pasted. And it joined on the joining conditions mentioned above, and obtained the mounting body of the state by which the edge part of the soldering resist 53 was adhere
- the initial conduction resistance of the mounting body was 1.11 ⁇ , and the conduction resistance after the TH test was 1.32 ⁇ .
- the short number was 1 and the adhesive strength was 4.8 N / cm. Table 1 shows these results.
- An anisotropic conductive film having no difference in width between the conductive particle-containing layer 71 and the insulating resin layer 72 in Comparative Examples 1 to 3, and the width of the conductive particle-containing layer 81 in Comparative Examples 4 to 6 is the insulating resin layer In the anisotropic conductive film larger than the width of 82, a short circuit occurred even when arranged as shown in FIGS. 6A to 6C and FIGS. 7A to 7C.
- the circuit protection of the COF 52 is provided on the single layer region 63 of the anisotropic conductive film.
- the boundary 56 between the region 54 and the terminal region 55 is disposed, and the terminal region 55 of the COF 52 is disposed on the two-layer region 64 of the anisotropic conductive film, thereby reducing conduction resistance and preventing occurrence of a short circuit.
- the adhesive strength was improved and high connection reliability was obtained.
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Abstract
Description
1.電子部品の接続方法
2.異方性導電フィルム
3.実施例
図1は、本実施の形態における電子部品の接続方法を説明するための図である。具体例として示す電子部品の接続方法は、第1の電子部品11の端子と第2の電子部品12の端子との間に、導電性粒子含有層21と絶縁性樹脂層22とを有する異方性導電フィルム20を介在させ、これらを加熱押圧することにより、第1の電子部品11の端子と第2の電子部品12の端子とを接続させるものである。
次に、本実施の形態における異方性導電フィルムについて説明する。図3は、本発明の一実施の形態に係る異方性導電フィルムを示す断面図である。この異方性導電フィルム20は、絶縁性樹脂に導電性粒子が分散された導電性粒子含有層21と、絶縁性樹脂に導電性粒子が含まれない絶縁性樹脂層22とから構成されている。
以下、本発明の実施例について説明する。ここでは、導電性粒子含有層、及び絶縁性樹脂層を作製し、これらを貼り合わせて2層構造の異方性導電フィルムを作製した。そして、異方性導電フィルムを介して半導体素子と基板とを熱圧着させて実装体を作製し、実装体における粒子捕捉数及び接続抵抗値を評価した。なお、本発明はこれらの実施例に限定されるものではない。
フェノキシ樹脂(品名:PKHC、巴工業社製)を45質量部、ラジカル重合性樹脂(品名:EB-600、ダイセル・サイテック社製)を50質量部、疎水性シリカ(品名:AEROSIL972、EVONIK社製)を3質量部、シランカップリング剤(品名:KBM-503、信越化学工業社製)を2質量部、及び反応開始剤(品名:パーヘキサC,日本油脂社製)を3質量部配合した樹脂組成物に、導電性粒子(品名:AUL704、積水化学工業社製)を粒子密度6000個/mm2となるように分散させたものをバーコーターにより剥離基材上に塗布し、剥離基材上の樹脂組成物を熱オーブンにより乾燥させ、厚み8μmの導電性粒子含有層を得た。
フェノキシ樹脂(品名:PKHC、巴工業社製)を55質量部、ラジカル重合性樹脂(品名:EB-600、ダイセル・サイテック社製)を45質量部、及び反応開始剤(品名:パーヘキサC,日本油脂社製)を3質量部配合した樹脂組成物をバーコーターにより剥離基材上に塗布し、剥離基材上の樹脂組成物を熱オーブンにより乾燥させ、厚み8μmの絶縁性樹脂層を得た。
導電性粒子含有層を1.2mm幅にスリットし、リールに巻き取って導電性粒子含有層テープを作製した。また、絶縁性樹脂層を1.5mm幅にスリットし、リールに巻き取って絶縁性樹脂層テープを作製した。導電性粒子含有層テープと絶縁性樹脂層テープとを貼り合わせ装置に通して貼り合わせ、巻き取り、幅方向の一方に0.3mm幅の絶縁樹脂層からなる単層領域と1.2mm幅の2層領域を有する異方性導電フィルムを作製した。
第1の電子部品としてガラス基板であるITOコーティングガラス(全面ITOコート、ガラス厚0.7mm、面取り0.3mm)、及び第2の電子部品としてフレキシブル配線基板であるソルダーレジストが形成されたCOF(50μmP、Cu8μmt-Snめっき、S/R PI系,PI38μmt-SperFlex基材)を用い、ITOコーティングガラスとCOFとの接合を行った。ITOコーティングガラス上の所定位置に異方性フィルムを仮貼りし、その上にCOFを仮固定した後、緩衝材として150μmtのテフロンが被覆された1.5mm幅のヒートツールを用いて、190℃‐4MPa-10secの接合条件で接合を行い、実装体を完成させた。
実装体について、デジタルマルチメータ(品番:デジタルマルチメータ7555、横河電機社製)を用いて4端子法にて電流1mAを流したときの導通抵抗値(初期)の測定を行った。また、温度85℃、湿度85%RH、500時間のTHテスト(Thermal Humidity Test)後の導通抵抗を測定した。
実装体に15Vの電圧を印加し、100chの絶縁抵抗測定を行い、ショート数をカウントした。
実装体を引張強度50cm/minで90℃方向に剥離したときの剥離強度(N/cm)を、剥離強度試験機(テンシロン、オリエンテック社製)を用いて測定した。
図5Aは、実施例1における電子部品の実装方法を説明するための断面図である。ここでは、1.2mm幅の導電性粒子含有層61と1.5mm幅の絶縁性樹脂層62とを貼り合わせ装置に通して貼り合わせ、0.3mm幅の絶縁性樹脂層62からなる単層領域63と、1.2mm幅の2層構造の2層領域64とを有する段差異方性導電フィルムを用いた。
図5Bは、実施例2における電子部品の実装方法を説明するための断面図である。実施例1と同様に、1.2mm幅の導電性粒子含有層61と1.5mm幅の絶縁性樹脂層62とを貼り合わせ装置に通して貼り合わせ、0.3mm幅の絶縁性樹脂層62からなる単層領域63と、1.2mm幅の2層構造の2層領域64とを有する段差異方性導電フィルムを用いた。
図5Cは、実施例3における電子部品の実装方法を説明するための断面図である。実施例1と同様に、1.2mm幅の導電性粒子含有層61と1.5mm幅の絶縁性樹脂層62とを貼り合わせ装置に通して貼り合わせ、0.3mm幅の絶縁性樹脂層62からなる単層領域63と、1.2mm幅の2層構造の2層領域64とを有する段差異方性導電フィルムを用いた。
図6Aは、比較例1における電子部品の実装方法を説明するための断面図である。ここでは、1.5mm幅の導電性粒子含有層71と1.5mm幅の絶縁性樹脂層72とを貼り合わせ装置に通して貼り合わせ、1.5mm幅の2層構造を有する異方性導電フィルムを用いた。
図6Bは、比較例2における電子部品の実装方法を説明するための断面図である。比較例1と同様に、1.5mm幅の導電性粒子含有層71と1.5mm幅の絶縁性樹脂層72とを貼り合わせ装置に通して貼り合わせ、1.5mm幅の2層構造を有する異方性導電フィルムを用いた。
図6Cは、比較例3における電子部品の実装方法を説明するための断面図である。比較例1と同様に、1.5mm幅の導電性粒子含有層71と1.5mm幅の絶縁性樹脂層72とを貼り合わせ装置に通して貼り合わせ、1.5mm幅の2層構造を有する異方性導電フィルムを用いた。
図7Aは、比較例4における電子部品の実装方法を説明するための断面図である。ここでは、1.5mm幅の導電性粒子含有層81と1.3mm幅の絶縁性樹脂層82とを貼り合わせ装置に通して貼り合わせ、0.2mm幅の導電性粒子含有層81からなる単層領域83と、1.3mm幅の2層構造の2層領域84とを有する異方性導電フィルムを用いた。
図7Bは、比較例5における電子部品の実装方法を説明するための断面図である。比較例4と同様に、1.5mm幅の導電性粒子含有層81と1.3mm幅の絶縁性樹脂層82とを貼り合わせ装置に通して貼り合わせ、0.2mm幅の導電性粒子含有層81からなる単層領域83と、1.3mm幅の2層構造の2層領域84とを有する異方性導電フィルムを用いた。
図7Cは、比較例6における電子部品の実装方法を説明するための断面図である。比較例4と同様に、1.5mm幅の導電性粒子含有層81と1.3mm幅の絶縁性樹脂層82とを貼り合わせ装置に通して貼り合わせ、0.2mm幅の導電性粒子含有層81からなる単層領域83と、1.3mm幅の2層構造の2層領域84とを有する異方性導電フィルムを用いた。
Claims (6)
- 接続端子が形成された第1の電子部品上に、絶縁性樹脂に導電性粒子が含まれない絶縁性樹脂層からなる単層領域と、前記絶縁性樹脂層と絶縁性樹脂に導電性粒子が分散された導電性粒子含有層とからなる2層電領域とを有する異方性導電フィルムを仮設置し、該異方性導電フィルム上に、接続端子が形成された端子領域と接続端子の回路パターンを保護する回路保護材が形成された回路保護領域とを有する第2の電子部品を仮設置する仮設置工程と、
前記第1の電子部品と前記第2の電子部品とを熱圧着し、前記第1の電子部品の接続端子と、前記第2の電子部品の接続端子とを接続させる接続工程とを有し、
前記仮設置工程では、前記異方性導電フィルムの単層領域上に前記第2の電子部品の回路保護領域と端子領域との境界が位置し、前記異方性導電フィルムの2層領域上に前記第2の電子部品の端子領域が位置するように前記異方性導電フィルムを仮設置する電子部品の接続方法。 - 前記仮設置工程では、前記異方性導電フィルムの単層領域の中心部に第2の電子部品の回路保護領域と端子領域との境界が位置するように前記異方性導電フィルムを仮設置する請求項1記載の電子部品の接続方法。
- 前記第1の電子部品は、画像表示パネルのガラス基板であり、
前記第2の電子部品は、フレキシブル配線基板であり、
前記仮設置工程では、前記絶縁樹脂層が前記フレキシブル配線板側となるように前記異方性導電フィルムを仮設置する請求項1又は2記載の電子部品の接続方法。 - 請求項1乃至3記載の接続方法により第1の電子部品と第2の電子部品とが電気的に接続された接続構造体。
- 絶縁性樹脂に導電性粒子が含まれない絶縁性樹脂層からなる単層領域と、前記絶縁性樹脂層と絶縁性樹脂に導電性粒子が分散された導電性粒子含有層とからなる2層領域とを有する異方性導電フィルム。
- 絶縁性樹脂に導電性粒子が含まれない絶縁性樹脂層と絶縁性樹脂に導電性粒子が分散された導電性粒子含有層とを貼り合わせ、前記絶縁性樹脂層からなる単層領域と、前記絶縁性樹脂層と前記導電性粒子含有層とからなる2層領域とを形成する異方性導電フィルムの製造方法。
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2010
- 2010-10-28 JP JP2010241865A patent/JP5695881B2/ja active Active
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2011
- 2011-10-26 TW TW100138766A patent/TW201225759A/zh unknown
- 2011-10-26 CN CN201180021253.1A patent/CN102844936B/zh not_active Expired - Fee Related
- 2011-10-26 WO PCT/JP2011/074718 patent/WO2012057227A1/ja active Application Filing
- 2011-10-26 US US13/643,891 patent/US20130077266A1/en not_active Abandoned
- 2011-10-26 KR KR20127028693A patent/KR20130124151A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
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KR20130124151A (ko) | 2013-11-13 |
JP2011049175A (ja) | 2011-03-10 |
CN102844936A (zh) | 2012-12-26 |
US20130077266A1 (en) | 2013-03-28 |
JP5695881B2 (ja) | 2015-04-08 |
TW201225759A (en) | 2012-06-16 |
CN102844936B (zh) | 2016-06-15 |
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