WO2020175685A1 - 異方導電性シート、電気検査装置および電気検査方法 - Google Patents
異方導電性シート、電気検査装置および電気検査方法 Download PDFInfo
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- WO2020175685A1 WO2020175685A1 PCT/JP2020/008410 JP2020008410W WO2020175685A1 WO 2020175685 A1 WO2020175685 A1 WO 2020175685A1 JP 2020008410 W JP2020008410 W JP 2020008410W WO 2020175685 A1 WO2020175685 A1 WO 2020175685A1
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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
- 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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
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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
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/025—Electric or magnetic 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
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
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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
- C09J7/10—Adhesives in the form of films or foils without carriers
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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
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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
- C09J7/28—Metal sheet
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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
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07314—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being perpendicular to test object, e.g. bed of nails or probe with bump contacts on a rigid support
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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
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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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
- 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
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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
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/036—Multilayers with layers of different types
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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
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
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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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4053—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques
- H05K3/4069—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques for via connections in organic insulating substrates
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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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
- H05K3/425—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
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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
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0373—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0116—Porous, e.g. foam
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0133—Elastomeric or compliant polymer
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0145—Polyester, e.g. polyethylene terephthalate [PET], polyethylene naphthalate [PEN]
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0162—Silicon containing polymer, e.g. silicone
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09581—Applying an insulating coating on the walls of holes
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09609—Via grid, i.e. two-dimensional array of vias or holes in a single plane
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09827—Tapered, e.g. tapered hole, via or groove
Definitions
- the present disclosure relates to an anisotropic conductive sheet, an electrical inspection device, and an electrical inspection method.
- An anisotropic conductive sheet which has conductivity in the thickness direction and insulation in the plane direction.
- Such an anisotropic conductive sheet is used in various applications, for example, as a probe (contactor) of an electrical inspection device for measuring electrical characteristics between multiple measurement points of an inspection target such as a printed circuit board. Has been.
- an anisotropic conductive sheet used for electrical inspection for example, an anisotropic conductive sheet having an insulating layer and a plurality of metal pins arranged so as to penetrate in the thickness direction is known (for example, Patent documents 1 and 2).
- Patent Document 1 Japanese Patent Laid-Open No. 4-172/282
- Patent Document 2 Japanese Patent Laid-Open No. 20 16 _ 2 1 3 1 8 6
- the present disclosure has been made in view of the above problems, and provides an anisotropic conductive sheet, an electrical inspection apparatus, and an electrical inspection method capable of suppressing damage to a terminal of an inspection target. ⁇ 02020/175685 2 (:171?2020/008410
- the purpose is to
- An anisotropic conductive sheet of the present disclosure has an insulating layer having a first surface and a second surface, and made of a first resin composition, and extending in the thickness direction within the insulating layer. And a plurality of columnar resins composed of the second resin composition, arranged between the plurality of columnar resins and the insulating layer, and external to the first surface and the second surface. And a plurality of conductive layers that are exposed to each other.
- An electrical inspection apparatus of the present disclosure includes an inspection substrate having a plurality of electrodes, and an anisotropic conductive sheet of the present disclosure disposed on a surface of the inspection substrate on which the plurality of electrodes are disposed. Have.
- An electrical inspection method includes a substrate for inspection having a plurality of electrodes, and an inspection target having terminals, which are laminated via an anisotropic conductive sheet of the present disclosure, and which is used for the inspection.
- the method further includes the step of electrically connecting the electrode of the substrate and the terminal of the inspection target through the anisotropic conductive sheet.
- Fig. 18 is a perspective view showing an anisotropic conductive sheet according to the first embodiment, and Fig. 1M is a partial cross-sectional view of line 1_M1 of Fig. 18_. is there.
- FIGS. 2 to 0 are partial cross-sectional views showing a process of manufacturing the anisotropic conductive sheet according to the first embodiment.
- FIG. 3 is a cross-sectional view showing the electrical inspection device according to the first embodiment.
- FIG. 4 and FIG. 4 are partial cross-sectional views showing an anisotropic conductive sheet according to a modified example.
- FIG. 5 and FIG. 5 are partial cross-sectional views showing an anisotropic conductive sheet according to a modified example. ⁇ 02020/175685 3 (:171?2020/008410
- FIG. 6 is a perspective view showing an anisotropic conductive sheet according to Embodiment 2, and FIG. 6 is a partially enlarged view of a horizontal cross section of the anisotropic conductive sheet of FIG.
- FIG. 60 is a partially enlarged view of the longitudinal section of the anisotropic conductive sheet of FIG.
- FIGS. 7 to 9 are partial cross-sectional views showing the steps of manufacturing the anisotropic conductive sheet according to the second embodiment.
- FIG. 8 is a perspective view showing an anisotropic conductive sheet according to the third embodiment, and FIG. 8 is a partially enlarged view of a longitudinal section of the anisotropic conductive sheet of FIG.
- FIGS. 9 to 9 are partial cross-sectional views showing a process of manufacturing the anisotropic conductive sheet according to the third embodiment.
- FIG. 10 is a partial cross-sectional view showing an anisotropic conductive sheet according to a modification. MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a perspective view showing an anisotropic conductive sheet 10 according to Embodiment 1
- FIG. 1M is a partial cross-sectional view of line 1___ 1 in FIG.
- the anisotropic conductive sheet 10 includes an insulating layer 11, a plurality of columnar resins 12 arranged therein, a columnar resin 12 and an insulating layer. 1 1 and a plurality of conductive layers 1 3 disposed therebetween.
- the insulating layer 11 is a layer having a first surface 1 13 located on one side in the thickness direction and a second surface 11 located on the other side in the thickness direction, and the first resin composition It is composed of objects (see Figure 18 and Mami).
- the insulating layer 11 insulates the plurality of conductive layers 13 from each other.
- the first surface 1 13 of the insulating layer 11 is one surface of the anisotropic conductive sheet 10
- the second surface 1 1 of the insulating layer 11 is the anisotropic conductive sheet 10. It is preferable that the object to be inspected is arranged on the first surface 1 13 which constitutes the other surface.
- the first resin composition that constitutes the insulating layer 11 provides insulation between the plurality of conductive layers 13. ⁇ 02020/175685 4 ⁇ (: 171?2020/008410
- the glass transition temperature or the storage elastic modulus of the first resin composition forming the insulating layer 11 is equal to that of the second resin composition forming the columnar resin 12. It is preferably equal to or lower than the glass transition temperature or storage elastic modulus.
- the glass transition temperature of the first resin composition is preferably a This is _40 ° ⁇ less, and more preferably _ 50 ° ⁇ below.
- the glass transition temperature of the first resin composition can be measured in accordance with “3 ⁇ 7095:2012”.
- the storage elastic modulus of the first resin composition at 25 ° is ...! .0 X 1 0 7 3 or less is preferable, and !. 0 1 0 5 to 1. ⁇ 1 0 7 3 is more preferable, and 1.0 0 1 0 5 to 9.0 X 1 0 6 More preferably, it is 3.
- the storage elastic modulus of the first resin composition is “” 3 ⁇ 7244— 1:1 998/
- the glass transition temperature and storage elastic modulus of the first resin composition can be adjusted by the type of elastomer contained in the resin composition, the amount of filler added, and the like.
- the storage elastic modulus of the first resin composition can also be adjusted by the form of the resin composition (whether it is porous or not).
- the first resin composition is not particularly limited as long as it has an insulating property, but from the viewpoint of easily satisfying the above-mentioned glass transition temperature or storage elastic modulus, it is crosslinked with an elastomer (base polymer). It is preferably a cross-linked product of a composition containing an agent (hereinafter, also referred to as “first elastomer composition”). That is, the insulating layer 11 is an elastic layer made of a crosslinked product of the first elastomer composition.
- Examples of the elastomer include silicone rubber, urethane rubber (urethane-based polymer), acrylic rubber (acrylic polymer), ethylene-propylene-gen copolymer (M01 01/1), chloroprene rubber, Styrene-Butadiene Copolymer, Acrylonitrile-Butadiene Copolymer, Polybutadiene Rubber, Natural Rubber, Polyester Thermoplastic Elastomer, Olefin Thermoplastic Elastomer ⁇ 02020/175685 5 ((171?2020/008410
- elastomer such as Stormer.
- silicone rubber is preferable.
- the cross-linking agent can be appropriately selected depending on the type of elastomer.
- silicone rubber crosslinkers include benzoylperoxide, bis-2,4-dichlorobenzoylperoxide, dicumylperoxide, and dicumylperoxide. Includes organic peroxides such as butyl peroxide.
- examples of the cross-linking agent for acrylic rubber (acrylic polymer) include epoxy compounds, melamine compounds and isocyanate compounds.
- the first elastomer composition may further contain other components such as a tackifier, a silane coupling agent, and a filler, if necessary, from the viewpoint of facilitating adjustment of the tackiness and the storage elastic modulus to the above range. May be included.
- the first elastomer composition may be porous, for example, from the viewpoint of easily adjusting the storage elastic modulus to the above range. That is, porous silicone can also be used.
- the plurality of columnar resins 12 are arranged in the insulating layer 11 so as to extend in the thickness direction thereof, and are composed of the second resin composition (see FIG. 1).
- the columnar resin 12 supports the conductive layer 13.
- the columnar resin 12 extends in the thickness direction of the insulating layer 11 specifically means that the axial direction of the columnar resin 12 is substantially parallel to the thickness direction of the insulating layer 11. That means.
- the term “substantially parallel” means ⁇ 10 ° or less with respect to the thickness direction of the insulating layer 11.
- the axial direction is a direction connecting two end faces 1 2 3 and 1 2 13 described later. That is, the columnar resin 12 is arranged such that the two end faces 1 2 3 and 1 2 claws are located on the first face 1 13 3 side and the second face 1 1 cave side.
- the shape of the columnar resin 12 is not particularly limited, and may be prismatic or columnar. In the present embodiment, it has a cylindrical shape.
- the columnar resin 12 may be exposed to the outside of the insulating layer 11 on at least one of the first surface 1 13 side and the second surface 11 side. That is, the columnar resin 12 ⁇ 02020/175685 6 ⁇ (: 171-12020/008410
- the surface on the 1st surface 1 1 3 side (end surface 1 2 3) or the surface on the 2nd surface 1 1 cave side (end surface 12 2c) is exposed on the 1st surface 1 1 3 side or the 2nd surface 1 1c surface You may have.
- the end face 12 cave of the columnar resin 12 is exposed to the second face 11 cave side (see FIG. 1).
- columnar resin If (or end face 12 ⁇ ) is exposed on the 1st face 1 1 3 side (or 2nd face 11 ⁇ side), columnar resin (Or the end surface 12) may be flush with the first surface 1 13 (or the second surface 11 1) of the insulating layer 11 or the first surface 1 of the insulating layer 11 It may protrude more than 1 3 (or 1 1 swell of the second surface).
- the end faces 1 23 and 12 of the columnar resin 12 may be flat or curved. In the present embodiment, the end faces 1 2 3 and 1 2 of the columnar resin 12 are both flat (see FIG. 1).
- the cross-sectional area of the columnar resin 12 may be constant or different in the thickness direction of the insulating layer 11 (or the axial direction of the columnar resin 12).
- the cross-sectional area means the area of a cross section of the columnar resin 12 perpendicular to the axial direction. That is, the area of the end surface 12 3 of the columnar resin 12 and the area of the end surface 12 of the columnar resin 12 may be the same or different. In the present embodiment, the area of the end face 1 2 3 of the columnar resin 12 and the area of the end face 12 of the column face resin 12 are the same. End face of columnar resin 1 2 1 The area of (or the end face 12 sq.) is the area of the end face 1 2 3 (or the end face 12 sq.) when viewed along the thickness direction of the insulating layer 11.
- circle-equivalent diameter of the columnar resin 1 2 of the end face 1 2 3 can be adjusted to a range to be described later distance between the plurality of columnar resin 1 second center, and guide the terminal and the conductive layer 1 3 of the test object As long as it is possible to secure communication, it is preferable that it is, for example, 2 to 20.
- the equivalent circle diameter of the end face 1 2 3 of the columnar resin 1 2 means the equivalent circle diameter of the end face 1 2 3 as viewed in the thickness direction of the insulating layer 1 1.
- the circle equivalent diameter of the columnar resin 1 2 of the end face 1 2 3 may be the same as the equivalent circle diameter of the end face 1 2 spoon (see FIG. 1 snake) may be smaller than ..
- the center-to-center distance (pitch) of the plurality of columnar resins 12 on the side of the first surface 1 13 Is not particularly limited and is appropriately set according to the pitch of the terminals of the inspection object.
- the terminal pitch of HBM (High Bandwidth Memory) as the inspection object is 55 m
- the terminal pitch of PoP (Packageon Package) is 40 to 65 OyLtm. Therefore, the center-to-center distance (pitch) p of the plurality of columnar resins 12 may be, for example, 5 to 650,000 Mm.
- the center-to-center distance p of the plurality of columnar resins 12 on the 1st surface 1 1a side is 5 to 55 mm. More preferably.
- the center-to-center distance (pitch) p of the plurality of columnar resins 12 on the first surface 1 1 a side is the minimum value of the center-to-center distances of the plurality of columnar resins 12 on the first surface 1 1 a side.
- the center of the columnar resin 12 is the center of gravity of the end face 12 a.
- the center-to-center distance p of the plurality of columnar resins 12 on the first surface 1 1 a side is the second surface 1
- the center-to-center distance p of the plurality of columnar resins 12 on the 1 b side may be the same or different.
- the center-to-center distance p between the plurality of columnar resins 12 on the first surface 11 a side and the center-to-center distance between the plurality of columnar resins 12 on the second surface 11 b side are the same. Is.
- the second resin composition forming the columnar resin 12 may be any one that can stably support the conductive layer 13 and is the same as the first resin composition forming the insulating layer 11. May be different or different. Even if the second resin composition forming the columnar resin 12 and the first resin composition forming the insulating layer 11 are the same, for example, in the cross section of the anisotropic conductive sheet 10, the columnar resin 1 It is possible to distinguish between the columnar resin 12 and the insulating layer 11 by, for example, confirming the boundary line between the 2 and the insulating layer 11.
- the glass transition temperature or the storage elastic modulus of the second resin composition forming the columnar resin 12 is the same as that of the first resin composition forming the insulating layer 11. It is preferable that the glass transition temperature or the storage elastic modulus is equal to or higher than that.
- the glass transition temperature of the second resin composition is preferably 120° C. or higher, more preferably 150 to 500 ° C., and 150 to 200 ° C. ⁇ 02020/175685 8 ⁇ (: 171?2020/008410
- the glass transition temperature of the second resin composition can be measured by the same method as described above.
- the storage elastic modulus of the second resin composition at 25° is ...! .0X 1 0 6 1 . ⁇
- the storage elastic modulus of the second resin composition can be measured by the same method as described above.
- the glass transition temperature and storage elastic modulus of the second resin composition can be adjusted by the type of resin or elastomer contained in the resin composition, addition of a filler, and the like.
- the storage elastic modulus of the second resin composition can also be adjusted by the form of the resin composition (whether it is porous or not).
- the second resin composition may be a crosslinked product of a composition containing an elastomer and a crosslinking agent (hereinafter, also referred to as "second elastomer composition"), or a resin composition containing a resin that is not an elastomer. It may be a thing.
- the second resin composition is not an elastomer from the viewpoint of easily satisfying the glass transition temperature or the storage elastic modulus or from the viewpoint of easily obtaining the strength to stably support the conductive layer 13. It is preferably a resin composition containing a resin.
- non-elastomer resin examples include polyamide, polycarbonate, polyethylene naphthalate, polyarylate, polysulfone, polyether sulfone, polyphenylene sulfide, polyether ether ketone, polyimide, polyether imide, Includes engineering plastics such as polyamideimide, conductive resins such as polyacetylene and polythiazyl, photosensitive resins such as photosensitive polybenzoxazole and photosensitive polyimide, acrylic resin, urethane resin, epoxy resin, olefin resin Of these, polyimide, polyethylene naphthalate, acrylic resin, and epoxy resin are preferable.
- a resin having a functional group that reacts with a curing agent may be cured with a curing agent or the like. That is, the second resin composition may be a cured product of a resin composition containing a curable resin which is not an elastomer and a curing agent.
- the second resin composition may further contain other components such as a conductive agent and a filler.
- the conductive agent can impart conductivity to the second resin composition.
- conductive agents include metal particles and carbon materials (carbon black, carbon fiber, etc.).
- the second resin composition may be composed of the above resin without containing other components.
- the conductive layer 13 is arranged at least at a part between the columnar resin 12 and the insulating layer 11, and on the first surface 1 13 side and the second surface 1 1 side of the insulating layer 11. They are exposed to the outside (see Fig. 1).
- the conductive layer 13 is exposed on the first surface 1 13 side and the second surface 1 1 side, respectively, and is also on the first surface 1 13 side and the second surface 1 side. 1 It is arranged so that it can be electrically connected to the sill side. If the conductive layer 13 is so arranged, the conductive layer 13 is It may be arranged only on a part of (the surface extending in the axial direction of the columnar resin 12 or the surface connecting the end faces 1 2 3 and 1 2 13 ). From the viewpoint of ensuring sufficient conduction, the conductive layer 13 is preferably arranged so as to surround the side surface 120 of the columnar resin 12, and is arranged on all the side surfaces 120 of the columnar resin 12. Is more preferable. In the present embodiment, the conductive layer 13 is arranged on the entire side surface 120 of the columnar resin 12 (see FIG. 1).
- the conductive layer 13 is preferably further arranged on at least one of the end faces 12 3 and 12 of the columnar resin 12.
- the conductive layer 13 is further arranged on the end surface 1 2 3 of the columnar resin 12, when the object to be inspected is placed on the first surface 1 1 3 and the terminals are electrically connected to the terminals of the object to be inspected. Since it is easy to connect to, it is easy to obtain sufficient conduction.
- the conductive layer 13 is further arranged on the end face 12 of the columnar resin 12, the conductive layer 13 and the electrodes of the inspection board can be easily electrically connected, and thus sufficient conduction can be ensured. Easy to obtain.
- the conductive layer 13 is a columnar tree. ⁇ 02020/175685 10 ((171?2020/008410
- the volume resistance value of the conductive layer 13 is not particularly limited as long as sufficient electrical conductivity can be obtained, but it is preferably, for example, 1 . ⁇ 1 10 10 _ 4 0 0 or less, 1.0 X 1 0 X 1 0 _ 6 ⁇ 1 .1 Is more preferable.
- the volume resistance value of the conductive layer 13 can be measured by the method described in 3 IV!
- the material forming the conductive layer 13 may have a volume resistance value satisfying the above range.
- Examples of the material forming the conductive layer 13 include a metal material such as copper, gold, nickel, tin, iron, or an alloy of one of these, and a force-bonding material such as force-black.
- the thickness of the conductive layer 13 is not particularly limited as long as the volume resistance value is set so as to satisfy the above range, but it can be generally smaller than the equivalent circle diameter of the columnar resin 12.
- the conductive layer 13 may have a thickness of 0.1 to 5
- the thickness of the conductive layer 13 is the thickness in the direction orthogonal to the thickness direction of the insulating layer 11 (or the radial direction of the columnar resin 12).
- the thickness of the conductive layer 13 may be the same or different.
- the conductive layer 1 3 of thickness at the columnar resin 1 2 of the end face 1 2 on 3 may be thinner than the thickness of the conductive layer 1 3 on the side 1 2_Rei.
- the anisotropic conductive sheet 10 according to the present embodiment may further have a layer other than the above, if necessary.
- a layer other than the above if necessary.
- an electrolyte layer (not shown) is further arranged on the conductive layer 13 (the conductive layer 13 exposed on the side of the first surface 1 13) arranged on the end surface 12 3 of the columnar resin 12 Good.
- the electrolyte layer is, for example, a film containing a lubricant, and the end surface 1 of the columnar resin 1 2 Can be disposed on the conductive layer 13 disposed on.
- the 1st surface 1 1 3 ⁇ 02020/175685 11 ⁇ (: 171?2020/008410
- the terminals of the inspection object are prevented from being deformed or the electrode material of the inspection object is not deposited on the surface of the conductive layer 13 without damaging the electrical connection with the terminals of the inspection object. Adhesion can be suppressed.
- the electrolyte layer is not on the columnar resin 1 2 of the end face 1 2 3 disposed conductive layer 1 3, are located throughout the surface of the first surface 1 1 3 anisotropic side conductive sheet 1 0 Good.
- Examples of lubricants contained in the electrolyte layer include fluororesin lubricants, boron nitride, silica, zirconia, silicon carbide, lubricants containing inorganic materials as a main component; paraffin wax, metal soap, Hydrocarbon release agents such as natural and synthetic paraffins, polyethylene waxes and fluorocarbons; higher fatty acids such as stearic acid and hydroxystearic acid; fatty acid release agents such as oxyfatty acids; stearate amide; Fatty acid amides such as ethylene bis stearoamide, fatty acid amide release agents such as alkylene bis fatty acid amides; fatty alcohols such as stearyl alcohol and cetyl alcohol, polyhydric alcohols, polyglycols, Alcohol-based mold release agents such as polyglycerols; Lower fatty acid aliphatic esters such as butyl stearate and pentaerythritol tetrastearate; F
- the metal salt of alkylsulfonic acid is preferably an alkali metal salt of alkylsulfonic acid.
- alkali metal salts of alkyl sulfonic acids are sodium 1-decane sulfonate, sodium 1-undecane sulfonate, sodium 1-dodecane sulfonate, sodium 1-tridecane sulfonate, sodium 1-tetradecane sulfonate, 1- Sodium pentadecanesulfonate, sodium 1-hexadecanesulfonate, sodium 1-heptadecanesulfonate, sodium 1-octadecanesulfonate, 1-sodium nonadecane sulfonate, 1-sodium eicosandecasulfonate, 1-deca ⁇ 02020/175685 12 ((171?2020/008410
- lithium 1-heptadecane sulfonate lithium 1-octadecane sulfonate, lithium 1-nonadecane sulfonate, lithium 1-eicosanedeca sulfonate, and isomers thereof.
- the sodium salt of alkyl sulfonic acid is particularly preferable because it has excellent heat resistance. These may be used alone or in combination of two or more.
- the electrolyte layer may further contain a conductive agent as described above, if necessary. Even if the electrolyte layer does not contain a conductive agent, the electrolyte layer is placed on the conductive layer 13 placed on the end face 1 2 3 of the columnar resin 12 and the thickness of the electrolyte layer is made extremely thin. By doing so, it is possible to secure conductivity.
- the thickness of the anisotropic conductive sheet 10 is not particularly limited as long as it can ensure the insulating property in the non-conducting portion, and may be, for example, 20 to 100.
- the side surface 1 of the columnar resin 1 2 having appropriate flexibility is used instead of the conventional metal pin. It has a conductive layer 13 disposed thereover. As a result, even if the terminal of the inspection object comes into contact with the conductive layer 13 of the anisotropic conductive sheet 10, it can be prevented from being scratched easily.
- FIG. 1 A first figure.
- the anisotropic conductive sheet 10 has 1) a supporting portion 21 and a plurality of pillar portions 2 arranged on one surface thereof. 2) and a step of preparing a resin base material 20 composed of the second resin composition or a precursor thereof (see FIG. 28), 2) a conductive layer 13 is formed on the surface of the pillar portion 2 2.
- Step of forming see FIG. 2), 3) Step of filling the first resin composition 1 into the voids between the plurality of pillars 22 to form the insulating layer 11 (see FIG. 2 (3) ), and 4) the step of removing the supporting portion 21 of the resin base material 20 (see FIG. 20), it can be obtained.
- a resin base material 20 having a support portion 21 and a plurality of pillar portions 22 arranged on one surface thereof is prepared (see FIG. 2).
- the plurality of pillar portions 22 of the resin base material 20 are members that become the pillar resin 12 of the anisotropic conductive sheet 10. Therefore, the size and shape of the plurality of pillar portions 22 and the center-to-center distance can be similar to the size and shape of the plurality of columnar resins 12 and the center-to-center distance, respectively.
- the resin substrate 20 can be obtained by any method. For example, a method of arranging a photomask on a resin sheet, exposing it in a pattern through the photomask, and then removing (developing) unnecessary parts to form a plurality of pillars 22 (photoresist method). A method of forming a plurality of pillars 22 by cutting a resin plate with, for example, a laser (cutting method); or filling a mold with a resin composition, or a resin sheet with a transfer surface of the mold The resin base material 20 can be obtained by a method of pressing to form a plurality of pillar portions 22 (molding or die transfer method).
- the resin sheet may be composed of a photosensitive resin composition that is a precursor of the second resin composition.
- the photosensitive resin composition include a positive type photosensitive resin such as a mixture of a novolac type epoxy resin and a ⁇ -naphthoquinonediazide compound (photosensitizer), or a mixture of an acrylic resin and a photoacid generator.
- Composition alkali-soluble acrylic resin, polyfunctional acrylate (crosslinking agent) and ⁇ 02020/175685 14 ⁇ (: 171?2020/008410
- Negative-type photosensitive resin composition such as curable composition containing photopolymerization initiator, curable composition containing photosensitive polyimide or photosensitive polybenzoxazole, and photopolymerization initiator or crosslinking agent Is included.
- the photomask is arranged in a pattern, for example, on the resin sheet.
- the exposure light may be ultraviolet rays, X-rays, electron beams, lasers, or the like.
- the removal (development) of the unnecessary portion may be dry etching using a reactive gas such as plasma or wet etching using a chemical solution such as an alkaline aqueous solution. If the resin sheet is composed of a positive type photosensitive resin composition, it is sufficient to remove the exposed part, and if it is composed of a negative type photosensitive resin composition, the unexposed part is removed. do it.
- the conductive layer 13 is formed on the surface of the column portion 22 (see FIG. 2).
- the conductive layer 13 can be formed by any method.
- conductive layer 1 conductive layer 1
- 3 may be formed by a plating method (for example, an electroless plating method), or may be formed by immersing the column portion 22 in a conductive paste or by applying a conductive paste.
- a plating method for example, an electroless plating method
- the insulating layer 11 is formed in the void between the pillars 22 (see Fig. 2 (3)).
- the first elastomer composition (precursor of the first resin composition) is filled in the space between the plurality of pillars 22.
- the filling of the first elastomer composition can be performed by any method, for example, a dispenser or the like.
- the first elastomer composition is dried or heated to crosslink the first elastomer composition.
- the insulating layer 11 made of a crosslinked product of the first elastomer composition (first resin composition) is formed.
- the supporting portion 21 of the resin substrate 20 is removed to obtain the anisotropic conductive sheet 10 (see FIG. 20).
- the removal of the supporting portion 21 can be performed by any method.
- the method for manufacturing the anisotropic conductive sheet 10 according to the present embodiment may further include steps other than the above 1) to 4) depending on the configuration of the anisotropic conductive sheet 10.
- the method may further include 5) a step of forming an electrolyte layer on the conductive layer 13 (or on the end surface 1 2 3) arranged on the end surface 1 2 3 of the columnar resin 12.
- the step 5) can be performed, for example, between the steps 3) and 4) or after the step 4).
- the formation of the electrolyte layer can be performed by any method, for example, a method of applying a solution of the electrolyte layer.
- the method for applying the solution of the electrolyte layer may be a known method such as spraying or brush application, dropping the solution of the electrolyte layer, or diving the anisotropic conductive sheet 10 into the solution.
- the material of the electrolyte layer is diluted with a solvent such as alcohol, and the diluted solution (solution of the electrolyte layer) is applied to the surface of the anisotropic conductive sheet 10 (conductive layer 13).
- a method of evaporating the solvent can be appropriately used.
- the electrolyte layer can be uniformly formed on (on the conductive layer 13 of) the surface of the anisotropic conductive sheet 10.
- the anisotropic conductive sheet 10 is heated to a high temperature. Then, a method of applying by melting the material can also be used.
- FIG. 3 is a sectional view showing an example of the electrical inspection device 100 according to the present embodiment.
- the electrical inspection apparatus 100 uses the anisotropic conductive sheet 10 shown in Fig. 1 and, for example, the electrical connection between the terminals 1 3 1 of the inspection object 1 3 0 (between measurement points) is performed. It is a device that inspects the physical characteristics (such as conduction). In addition, in the figure, the electrical inspection method will be described. ⁇ 02020/175685 16 ⁇ (: 171?2020/008410
- the inspection object 130 is also shown.
- the electrical inspection device 100 includes a holding container (socket) 1
- an inspection substrate 120, and an anisotropic conductive sheet 10 are provided.
- the holding container (socket) 110 is an inspection substrate 120 or an anisotropic conductive sheet 1
- the inspection substrate 120 is arranged in the holding container 110, and the inspection object 1
- a plurality of electrodes 1 2 1 facing the respective measurement points of the inspection object 1 3 0 are provided on the surface facing the 3 0.
- the anisotropic conductive sheet 10 has the electrode 1 2 1 and the second surface 1 of the anisotropic conductive sheet 1 0 on the surface of the inspection substrate 1 2 0 on which the electrodes 1 2 1 are arranged. 1 It is arranged so as to be in contact with the conductive layer 13 on the cave side.
- measurement object 1 3 0 is not particularly limited, for example, various semiconductor devices such as 1 to 1 Snake IV! Or ⁇ (semiconductor packages), or electronic components, such as printed circuit board and the like.
- the inspection object 130 is a semiconductor package
- the measurement points may be bumps (terminals).
- the inspection object 130 is a printed circuit board
- the measurement point may be a measurement land provided on the conductive pattern or a land for mounting components.
- an inspection substrate 1 2 0 having electrodes 1 2 1 and an inspection target 1 3 0 are connected to an anisotropic conductive sheet. Electrodes 1 2 1 of inspection board 1 2 0 and terminals 1 3 1 of inspection object 1 3 0 are electrically connected via anisotropic conductive sheet 1 0 by stacking via 10 There is a step of
- the inspection object 130 may be pressed (for example, by pressing) (see FIG. 3) or may be contacted in a heated atmosphere.
- the surface (first surface 1 13) of the anisotropic conductive sheet 10 comes into contact with the terminals 1 3 1 of the inspection target 1300.
- the anisotropic conductive sheet 10 is electrically connected not by the conventional hard metal pin but by the conductive layer 13 arranged on the columnar resin 12 having appropriate flexibility. Therefore, even if the terminal 13 1 of the inspection object 130 comes into contact with the conductive layer 13 of the anisotropic conductive sheet 10, it is possible to prevent scratches.
- anisotropic conductive sheet 10 shown in FIG. 1 is shown in the above embodiment, the anisotropic conductive sheet 10 is not limited to this.
- FIG. 4 and Tomomi are partial cross-sectional views showing an anisotropic conductive sheet 10 according to a modification.
- the conductive layer 13 may be further arranged not only on the end face 1 2 3 of the columnar resin 12 but also on the end face 12 3. Further, as shown in FIG. 4 Snake, (exposed on the first surface 1 1 3 side) columnar resin 1 2 on the end face 1 2 3, conductive layer 1 3 may be further arranged. As described above, the conductive layer 13 arranged on the end surface 1 2 3 of the columnar resin 12 may protrude more than the first surface 1 13 of the insulating layer 11.
- the conductive layer 13 arranged on the end face 1 2 3 or 12 of the columnar resin 12 is the conductive layer arranged on the side face 120 of the columnar resin 12. It may be integral with 13 or may be a separate body. Further, the composition of the conductive layer 13 arranged on the end face 1 2 3 or 1 2 of the columnar resin 12 is the same as the composition of the conductive layer 1 3 arranged on the side face 1 20 of the columnar resin 12. It may be the same or different.
- the conductive layer 13 arranged on the end face 1 2 3 or 12 of the columnar resin 12 is, for example, a conductive paint (metal particles having a nanometer level or a conductive base containing a conductive filler). )
- the conductive layer 13 disposed on the side surface 120 of the columnar resin 12 may be a layer formed by electroless plating.
- FIG. 5 and FIG. 9 are partial cross-sectional views showing an anisotropic conductive sheet 10 according to a modification. ⁇ 02020/175685 18 ⁇ (: 171?2020/008410
- the end face 1 of the columnar resin 12 is May be exposed on the side of the first surface 1 13 and the end face 12 may be exposed on the side of the second surface 1 1.
- the conductive resin composition may be a resin composition containing the above resin and a conductive agent, or may be a conductive resin.
- the end surface 1 2 3 of the columnar resin 12 is the first surface 1 1
- the above-mentioned electrolyte layer (not shown) may be further disposed on the exposed end face 123 of the columnar resin 12.
- the area of the end face 1223 of the columnar resin 12 may be smaller than the area of the end face 12.
- the columnar resin 12 may be configured such that the cross-sectional area of the columnar resin 12 continuously (asymptotically) increases from the first surface 1 13 side toward the second surface 11 side. However, it may be configured to increase discontinuously. In the figure, the columnar resin 12 is configured such that its cross-sectional area continuously increases (tapered) from the first surface 1 13 side toward the second surface 11 side.
- the taper ratio 0 is preferably more than 0 and not more than 0.1.
- the taper ratio is represented by the following formula.
- ⁇ 1 Equivalent circle diameter of the cross section (or end face 1 2 3) of the end on the first face 1 1 3 side of the tapered portion of the columnar resin 12
- the insulating layer 11 may have elasticity so that it is elastically deformed when pressure is applied in the thickness direction. Therefore, the insulating layer 11 need only have an elastic layer made of a cross-linked product of the first elastomer composition, and may further have other layers as long as the elasticity is not impaired as a whole.
- the inspection target 130 is pressed against the inspection base plate 120 on which the anisotropic conductive sheet 10 is arranged to perform the electrical inspection.
- the present invention is not limited to this, and the electrical inspection may be performed by pressing the inspection substrate 120 on which the anisotropic conductive sheet 10 is arranged against the inspection object 130.
- the anisotropic conductive sheet is used for electrical inspection
- the present invention is not limited to this, and electrical connection between two electronic members, for example, a glass substrate and a flexible printed circuit board. It can also be used for electrical connection between the substrate and electronic components mounted on the substrate.
- FIG. 6 is a perspective view showing an anisotropic conductive sheet 10 according to Embodiment 2.
- FIG. 6 is a partially enlarged view of a horizontal cross section of the anisotropic conductive sheet 10 of FIG. 6 (in the thickness direction).
- Fig. 60 is a partial enlarged view of a longitudinal section of the anisotropic conductive sheet 10 of Fig. 68 (partial sectional view along the thickness direction). ..
- the anisotropic conductive sheet 10 is composed of an insulating layer 11 and a compound layer arranged inside the insulating layer 11 so as to extend in the thickness direction thereof.
- a plurality of conductive paths 14 and a plurality of adhesive layers 15 respectively arranged at least at a part between the plurality of conductive paths 14 and the insulating layer 11.
- the conductive paths 14 are formed between the columnar resin 12 and a small amount of space between the columnar resin 12 and the insulating layer 1 1. ⁇ 02020/175685 20 ((171?2020/008410
- the adhesive layer 15 is arranged between the conductive layer 13 and the insulating layer 11.
- the anisotropic conductive sheet 10 has a plurality of conductive layers 1
- the anisotropic conductive sheet 10 according to the first embodiment is configured in the same manner as the anisotropic conductive sheet 10 according to the first embodiment except that it further has a plurality of adhesive layers 15 arranged on at least a part between the insulating layer 11 and the insulating layer 11. Therefore, the same members and compositions as those in Embodiment 1 are designated by the same reference numerals or names, and the description thereof will be omitted.
- the adhesive layer 15 is arranged at least at a part between the conductive layer 13 and the insulating layer 11. Then, the adhesive layer 15 enhances the adhesiveness between the conductive layer 13 and the insulating layer 11 and makes it difficult for them to be peeled off at their boundary surfaces. That is, the adhesive layer 15 can also function as a bonding layer or a primer layer that enhances the adhesiveness between the conductive layer 13 and the insulating layer 11.
- the adhesive layer 15 is disposed on at least a part of the surface of the conductive layer 13 (Fig.
- the material forming the adhesive layer 15 is not particularly limited as long as it can sufficiently bond the columnar resin 12 and the insulating layer 11 together.
- the material forming the adhesive layer 15 may be an organic inorganic composite composition containing a polycondensate of an alkoxysilane or an oligomer thereof, or a third resin composition.
- the organic-inorganic composite composition contains a polycondensation product of an alkoxysilane or an oligomer thereof.
- Alkoxysilane is an alkoxysilane compound having 2 to 4 alkoxy groups bonded to silicon. That is, the alkoxysilane can be a bifunctional alkoxysilane, a trifunctional alkoxysilane, a tetrafunctional alkoxysilane, or a mixture of one or more of these. Of these, alkoxysilanes are trifunctional or tetrafunctional, from the viewpoint of forming a three-dimensional crosslinked product and making it easy to obtain sufficient adhesiveness. ⁇ 0 2020/175685 21
- the alkoxysilane oligomer may be a partially hydrolyzed and polycondensed alkoxysilane.
- the alkoxysilane or its oligomer preferably contains, for example, a compound represented by the following formula (1).
- Each is independently an alkyl group. Is an integer from 0 to 20.
- Examples of the alkoxysilane represented by the formula (1) include tetramethoxysilane, tetraethoxysilane, tetrabutoxy and the like.
- the alkoxysilane or the oligomer thereof may be a commercially available product.
- Examples of commercially available oligomers of alkoxysilane include Colcoat N-103 and Colcoat manufactured by Colcoat.
- the organic-inorganic composite composition may further contain other components such as a conductive material, a silane coupling agent, and a surfactant, if necessary.
- the glass transition temperature of the third resin composition forming the adhesive layer 15 is not particularly limited, but the first resin composition forming the insulating layer 11 under heating (crosslinked product of the first elastomer composition) When the conductive layer 13 expands, it is easy to prevent the conductive layer 13 from cracking following it, and the conductive layer 13 breaks through the adhesive layer 15 and makes contact with the adjacent conductive layer 13. From the viewpoint of making it easier to suppress (short circuit is suppressed), it is preferable that the temperature is higher than the glass transition temperature of the first resin composition forming the insulating layer 11. Further, the glass transition temperature of the third resin composition forming the adhesive layer 15 may be the same as or different from the glass transition temperature of the second resin composition forming the columnar resin 12. From the viewpoint of highly suppressing the cracking and short circuit of the conductive layer 13, it is preferable that the glass transition temperature is equal to or higher than the glass transition temperature of the second resin composition.
- the glass transition temperature of the third resin composition should be 150°C or higher. ⁇ 02020/175685 22 ((171?2020/008410
- the glass transition temperature of the third resin composition can be measured by the same method as described above.
- the third resin composition constituting the adhesive layer 15 is not particularly limited, but from the viewpoint of easily exhibiting the above glass transition temperature while exhibiting adhesiveness, the third resin composition constituting the second resin composition It is preferably the same as the resin composition. That is, the third resin composition may be a crosslinked product of a composition containing an elastomer and a crosslinking agent (hereinafter, also referred to as “third elastomer composition”), or a resin composition containing a resin that is not an elastomer. Alternatively, it may be a cured product of a resin composition containing a curable resin which is not an elastomer and a curing agent.
- the same elastomers as the elastomers contained in the first elastomer composition can be used.
- the type of elastomer contained in the third elastomer composition may be the same as or different from the type of elastomer contained in the first elastomer composition.
- the type of elastomer contained in the third elastomer composition is the elastomer contained in the first elastomer composition. Can be of the same type.
- the weight average molecular weight of the elastomer contained in the third elastomer composition is not particularly limited, but from the viewpoint of easily satisfying the glass transition temperature, the weight average molecular weight of the elastomer contained in the first elastomer composition is lower than that of the elastomer contained in the first elastomer composition. It is also preferable that it is high.
- the weight average molecular weight of the elastomer can be measured in terms of polystyrene by gel permeation chromatography ( ⁇ ).
- the cross-linking agent contained in the third elastomer composition may be appropriately selected according to the kind of the elastomer, and the same cross-linking agent as mentioned above as the cross-linking agent contained in the first elastomer composition may be used. it can.
- the content of the cross-linking agent in the third elastomer composition is not particularly limited, but from the viewpoint of easily satisfying the above glass transition temperature, it is higher than the content of the cross-linking agent in the first elastomer composition. ⁇ 02020/175685 23 ((171?2020/008410
- the degree of crosslinking (gel fraction) of the crosslinked product of the third elastomer composition is preferably higher than the degree of crosslinking (gel fraction) of the crosslinked product of the first elastomer composition.
- the non-elastomer resin (including curable resin) and curing agent contained in the third resin composition are the same as those listed as non-elastomer resin and curing agent contained in the second resin composition, respectively. Can be used.
- the non-elastomeric resin contained in the third resin composition is preferably polyimide, polyamide imido, acrylic resin, or epoxy resin.
- the third resin composition is a resin that is not an elastomer from the viewpoint of suppressing the cracking of the conductive layer 13 and the short circuit between the conductive layers 13 by making it easier to satisfy the glass transition temperature.
- a resin composition containing or a cured product of a resin composition containing a curable resin and a curing agent is not included in the third resin composition.
- the thickness of the adhesive layer 15 is not particularly limited as long as it can sufficiently bond the conductive layer 13 and the insulating layer 11 as long as the function of the conductive layer 13 is not impaired. Generally, the thickness of the adhesive layer 15 is preferably smaller than the thickness of the conductive layer 13. Specifically, the thickness of the adhesive layer 15 is preferably 1 or less, and more preferably 0.5 or less.
- FIG. 7 to 9 are partial cross-sectional views showing the manufacturing process of the anisotropic conductive sheet 10 according to the present embodiment.
- the anisotropic conductive sheet 10 has 1) a supporting portion 21 and a plurality of pillar portions arranged on one surface thereof. 2 2 and a step of preparing a resin base material 20 composed of a second resin composition or a precursor thereof (see FIG. 78), 2) a conductive layer 1 3 on the surface of the pillar 2 2 Step (see FIG. 7), 3) Step of forming the adhesive layer 15 on the surface of the conductive layer 13 (see FIG. 7 ⁇ ), 4) In the gap between the pillars 2 2 , Step of forming insulating layer 11 (see Fig. 70), and 5) Support portion 21 of resin base material 20 and extra adhesive layer 15 ⁇ 02020/175685 24 ⁇ (: 171?2020/008410
- the conductive layer 13 is formed.
- the manufacturing method of the anisotropic conductive sheet 10 according to the first embodiment can be the same as that of the first embodiment except that the step of forming the adhesive layer 14 on the surface is further performed.
- the adhesive layer 15 is formed on the surface of the conductive layer 13 (see FIG. 70).
- the pillar portion 22 having the conductive layer 13 formed thereon is treated with, for example, a solution containing the above-mentioned alkoxysilane or an oligomer thereof or a third resin composition or a precursor thereof (epoxy resin and a curing agent Resin composition or third elastomer composition containing the same), or the solution or composition is applied to the surface of the column portion 2 2 on which the conductive layer 13 is formed.
- a solution containing the above-mentioned alkoxysilane or an oligomer thereof or a third resin composition or a precursor thereof epoxy resin and a curing agent Resin composition or third elastomer composition containing the same
- the applied solution containing alkoxysilane or its oligomer (or the third resin composition or its precursor) is dried or heated to polycondense the alkoxysilane or its oligomer (or the third resin).
- the composition or its precursor is dried or crosslinked).
- the adhesive layer 15 containing the alkoxysilane or the polycondensate of its oligomer (or the adhesive layer 15 made of the third resin composition) is formed.
- drying or heating may be carried out to such an extent that the alkoxysilane or the oligomer thereof in the solution is polycondensed or the third resin composition or the precursor thereof is dried or crosslinked).
- drying temperature is preferably 8 0 ° ⁇ As, more rather preferably can be a 1 2 0 ° ⁇ As.
- the drying time depends on the drying temperature, but can be, for example, 1 to 10 minutes.
- the anisotropic conductive sheet 10 according to the present embodiment is similar to the first embodiment in that ⁇ 02020/175685 25 ⁇ (: 171?2020/008410
- the anisotropic conductive sheet 10 according to the present embodiment has an adhesive layer 15 arranged between a plurality of conductive layers 13 and an insulating layer 11. Thereby, in addition to the effects described in the first embodiment, the following effects are further exhibited.
- the storage elastic modulus (0 2) of the second resin composition constituting the columnar resin 12 at 25 ° ⁇ at 25 ° ⁇ at 25 ° ⁇ of the first resin composition constituting the insulating layer 11 is Insulates from the conductive path 1 2 by repeated pressurization and depressurization when it is higher than the storage elastic modulus ( ⁇ 1), specifically when ⁇ 1 / ⁇ 2 is less than 1, preferably less than 0.1. It is easy to peel off at the interface with layer 1 1. In such a case, it is particularly effective to provide the adhesive layer 15.
- the anisotropic conductive sheet 10 shown in FIGS. 6A and 6B is shown in the above embodiment, the anisotropic conductive sheet 10 is not limited to this.
- the end face 1 2 3 of the columnar resin 12 is exposed on the side of the first face 1 1 3 and the end face 1 2 is the second face.
- Surface 1 1 It may be exposed on the side of the cave.
- the anisotropic conductive sheet 10 according to the present embodiment may further have a layer other than the above layers, if necessary.
- an electrolyte layer (not shown) may be further disposed on the conductive layer 1 3 (conductive layer 1 3 exposed on the first surface 1 1 3 side) disposed on the end surface 1 2 3 of the columnar resin 12. Good.
- the electrolyte layer is, for example, a film containing a lubricant.
- the lubricant contained in the electrolyte layer is preferably a metal salt of an alkyl sulfonic acid from the viewpoint that it has little adverse effect such as contamination of the electrode of the inspection object, and particularly has little adverse effect when used at high temperature.
- the electrolyte layer may be arranged on the entire surface of the anisotropic conductive sheet 10 on the first surface 1 13 side.
- the third resin composition or its precursor is dried or crosslinked to form the adhesive layer 15
- the first elastomer composition precursor of the first resin composition
- the present invention is not limited to this.
- the adhesive layer 15 and the insulating layer 1 1 You may form at the same time.
- FIG. 8 is a perspective view showing an anisotropic conductive sheet 10 according to Embodiment 3, and FIG. 8 is a partially enlarged view of a longitudinal section of the anisotropic conductive sheet 10 in FIG. 8 (thickness direction). Is a partial cross-sectional view along the line).
- the anisotropic conductive sheet 10 includes an insulating layer 11 and a plurality of insulating layers arranged inside the insulating layer 11 so as to extend in the thickness direction.
- Columnar resin 12 and a plurality of conductive layers 13 arranged between the plurality of columnar resins 12 and the insulating layer 11 respectively.
- the insulating layer 11 has a first insulating layer 11 8 and a second insulating layer 11 1.
- the anisotropic conductive sheet 10 according to the first embodiment is configured in the same manner as the anisotropic conductive sheet 10 according to the first embodiment except that the insulating layer 11 having the two insulating layers 11 and 11 is changed. Therefore, the same as in the first embodiment ⁇ 02020/175685 27 ⁇ (: 171?2020/008410
- the insulating layer 11 has a first insulating layer 1 18 and a second insulating layer 11 1 (see FIG. 8).
- the first insulating layer 11 18 can function as a support layer (or a base material layer) for the insulating layer 11.
- the first insulating layer 1 18 has a first surface 1 13 and is made of a first resin composition.
- the first insulating layer 1 18 has the first surface 1 13 on which the inspection object is arranged, it is preferable that the first insulating layer 1 18 does not have tackiness. Specifically, the first insulating layer 1 1 1 8
- the probe tack value can be measured at 25 ° ⁇ according to 8/3 1 ⁇ /1 0 2 9 7 9 :2 0 16.
- the adhesive strength of the first insulating layer 1 18 at 25° with respect to the 3 II 3 plane is preferably 11 ⁇ 1/25 or less.
- the adhesive strength can be measured as the adhesive strength at a peeling angle of 90° according to “3 0 2 3 7: 2 0 9 9”.
- the first resin composition constituting the first insulating layer 1 18 may have a probe tack value or an adhesive force satisfying the above range and can insulate between a plurality of conductive layers 13; There is no particular limitation. From the viewpoint of preventing the terminals of the inspection object from being easily scratched, the storage elastic modulus or glass transition temperature of the first resin composition forming the first insulating layer 1 18 is the same as that of the second resin forming the columnar resin 1 2 It is preferable that it is equal to or lower than the storage elastic modulus or glass transition temperature of the resin composition.
- the first insulating layer 1 18 The storage elastic modulus or the glass transition temperature of the resin composition may be higher than the storage elastic modulus or the glass transition temperature of the fourth resin composition forming the second insulating layer 11 1. ⁇ 02020/175685 28 ⁇ (: 171?2020/008410
- the storage elastic modulus ( ⁇ 1) and glass transition temperature range of the first resin composition constituting the first insulating layer 1 1 18 at 25 °O are the first resin composition of the first embodiment. It can be similar to the range of storage modulus (0 1) and glass transition temperature of the product at 25 ° .
- the probe tack value, adhesive strength, storage elastic modulus, and glass transition temperature of the first resin composition can be adjusted by the type of elastomer, the degree of crosslinking (or gel fraction), and the amount of filler added, which will be described later. ..
- the storage elastic modulus of the first resin composition can also be adjusted by the form of the resin composition (whether it is porous or not).
- the first resin composition forming the first insulating layer 1 18 may be any one as long as it has an insulating property and satisfies the above physical properties, and is not particularly limited, but the first resin composition according to the first embodiment may be used. It may be a first resin composition, that is, a first elastomer composition.
- the thickness 1 of the first insulating layer 1 1 1 8 is not particularly limited, but is a ratio of the thickness 1 1 of the 1st insulating layer 1 1 8 and the thickness 2 of the 2nd insulating layer 1 1 /Ding 2) is set to be, for example, 1/9 to 9/1, preferably 4/6 to 9/1. If the thickness of the first insulating layer 1 18 is more than a certain value, it is easy to keep the shape of the insulating layer 11 well, and if the thickness of the first insulating layer 1 18 is less than a certain value, Since the thickness 2 of the second insulating layer 11 is not too thin, the adhesiveness of the second surface 11 is difficult to be impaired. Specifically, the thickness 1 of the first insulating layer 118 is preferably 2 to 90, and more preferably 20 to 80.
- the second insulating layer 11 1 is laminated on the first insulating layer 1 18 and functions as an adhesive layer.
- the second insulating layer 11 has a second surface 11 and has a fourth resin composition.
- the second insulating layer 1 1 1 has adhesiveness because it functions as an adhesive layer. That is, probe tack values of at 2 5 ° ⁇ in the second insulating layer 1 1 only the second side 1 1 spoon, the probes in 2 5 ° ⁇ in the first insulating layer 1 1 viii first surface 1 1 3 It is preferably higher than the tack value.
- the second insulating layer 1 ⁇ 02020/175685 29 ⁇ (: 171?2020/008410
- the probe tack value at 25° ⁇ of 1m is 31 ⁇ 1/501010 or more.
- the probe tack value at 25° of the second insulating layer 11 1 is more preferably 5 to 50 1 ⁇ 1/5 0 1 10 and more preferably 7 to 50 1 ⁇ 1/5. It is more preferably 0.
- the probe tack value can be measured by the same method as described above.
- the adhesive strength of the second insulating layer 11 1 to the 3 II 3 surface at 25° ⁇ is higher than the adhesive strength of the first insulating layer 1 18 to the 3 II 3 surface at 25° ⁇ .
- the adhesive strength of the second insulating layer 1 1 1 at 25 ° ⁇ to the 3 II 3 surface is preferably 0.8 to 101 ⁇ 1/25 ⁇ 101, 5 to 1 It is more preferable that it is 01 ⁇ 1/25 ⁇ 101.
- the adhesive strength can be measured by the same method as described above.
- the storage elastic modulus ( ⁇ 4) of the fourth resin composition constituting the second insulating layer 1 1 1 at 25° ⁇ is 1% from the viewpoint that the probe tack value and the adhesive force easily satisfy the above range. It is preferably lower than the storage elastic modulus (O 1) at 25 ° of the first resin composition forming the insulating layer 118. Specifically, the ratio 04/ ⁇ 1 between the storage elastic modulus of the fourth resin composition (04) and the storage elastic modulus of the first resin composition (01) is 0.001 to 0.9. Is preferred.
- the storage elastic modulus 04 of the fourth resin composition is not particularly limited as long as it satisfies the above relationship, but it is preferably, for example, 1.0 X 1 0 4 1.0 X 1 0 6 3.
- the storage elastic modulus ⁇ 4 of the fourth resin composition can be measured by the same method as described above.
- the glass transition temperature of the fourth resin composition constituting the second insulating layer 1 1 constitutes the first insulating layer 1 18 from the viewpoint that the Plowtack value and the adhesive force easily satisfy the above range. It is preferably lower than the glass transition temperature of the first resin composition. Specifically, the glass transition temperature of the fourth resin composition is preferably _40° or less. The glass transition temperature of the fourth resin composition is the same as that described above. ⁇ 02020/175685 30 (:171?2020/008410
- the probe tack value, adhesive force, storage elastic modulus, and glass transition temperature of the fourth resin composition can be adjusted by the type of elastomer, the weight average molecular weight, the degree of crosslinking (or gel fraction), and the like described below.
- the fourth resin composition is similar to the elastomer (base polymer) as in the first resin composition.
- a cross-linked product of a composition containing a cross-linking agent (hereinafter, also referred to as “fourth elastomer composition”) is preferable.
- the elastomer contained in the fourth elastomer composition the same elastomers as those listed as the elastomer contained in the first elastomer composition can be used.
- the type of elastomer contained in the fourth elastomer composition may be the same as or different from the type of elastomer contained in the first elastomer composition. From the viewpoint of facilitating the enhancement of the adhesion between the first insulating layer 11 8 and the second insulating layer 11 1, the type of elastomer contained in the fourth elastomer composition is included in the first elastomer composition. It is preferably the same as the type of elastomer.
- the elastomer contained in the first elastomer composition is preferably silicone rubber
- the elastomer contained in the fourth elastomer composition is also preferably silicone rubber.
- the weight average molecular weight of the elastomer contained in the fourth elastomer composition is not particularly limited, but from the viewpoint of making it easier for the probe tack value, adhesive strength, storage elastic modulus, and glass transition temperature to satisfy the above relationship, for example, It may be lower than the weight average molecular weight of the elastomer contained in the first elastomer composition.
- the weight average molecular weight of the elastomer can be measured in terms of polystyrene by gel permeation chromatography ( ⁇ ).
- the crosslinking agent contained in the fourth elastomer composition can be appropriately selected according to the type of elastomer.
- the same cross-linking agents listed as the cross-linking agent contained in the first elastomer composition can be used.
- the content of the crosslinking agent in the fourth elastomer composition is ⁇ 02020/175685 31 ⁇ (: 171?2020/008410
- the content of the crosslinking agent in the first elastomer composition is smaller than the content of the crosslinking agent from the viewpoint that the probe tack value, the adhesive strength, the storage elastic modulus, or the glass transition temperature can easily satisfy the above relationship.
- the fourth elastomer composition may further contain other components such as a tackifier, a silane coupling agent, and a filler, if necessary.
- the crosslinked product of the fourth elastomer composition that constitutes the second insulating layer 1 1 1 The degree of cross-linking is preferably lower than the cross-linking degree of the cross-linked product of the first elastomer composition that constitutes the first insulating layer 11. That is, the gel fraction of the crosslinked product of the fourth elastomer composition forming the second insulating layer 11 is lower than the gel fraction of the crosslinked product of the first elastomer composition forming the first insulating layer 11. This is preferable.
- the peel strength (interlayer peel strength) at 25° between the second insulating layer 11 and the first insulating layer 1 18 is 51 ⁇ 1/2 Or more, preferably 7 to 30
- Peel strength (delamination strength between layers) shall be measured under the conditions of 25° ⁇ and peeling speed 300 / ⁇ n according to 1800° peeling test according to ⁇ 309862: 2007 (“1 0237: 2009). You can
- the thickness ratio 2 of the second insulating layer 11 and the thickness of the second insulating layer 11 be set such that the thickness ratio (chome 1/chome 2) is in the above range.
- the second resin composition forming the columnar resin 12 may be any one that can stably support the conductive layer 13 and is the same as the first resin composition forming the first insulating layer 1 18. May be different or different. Even if the second resin composition forming the columnar resin 12 and the first resin composition forming the first insulating layer 1 18 are the same, for example, in the cross section of the anisotropic conductive sheet 10, It is possible to distinguish between the columnar resin 12 and the first insulating layer 1 18 by, for example, confirming the boundary line between the columnar resin 12 and the insulating layer 1 1. Above all, it is easy to support the conductive layer 13 stably. ⁇ 02020/175685 32 ((171?2020/008410
- the storage elastic modulus or glass transition temperature of the second resin composition forming the columnar resin 12 is the same as the storage elastic modulus or glass transition temperature of the first resin composition forming the first insulating layer 11. Or higher than that.
- the storage elastic modulus (02) at 25 °C of the second resin composition was 1.
- the storage elastic modulus of the second resin composition can be measured by the same method as described above.
- the storage elastic modulus (02) of the second resin composition, the storage elastic modulus ( ⁇ 1) of the first resin composition and the storage elastic modulus (04) of the fourth resin composition (04) ( 1/04) ⁇ 2/(01+04) is, for example, the thickness ratio of the first insulating layer 1 1 18 and the second insulating layer 11 1 (4/9/9) is 4/6 ⁇ 9/ If it is 1, it is preferable 9.
- ⁇ _ ⁇ 9. is 0 X 1 ⁇ 4.
- ⁇ 2 / ( ⁇ 1 +04) is to have a suitable strength columnar resin 1 2
- the conductive layer 1 3 easily stably held, is 9.0 X 1 ⁇ 4 below Since the strength of the insulating layer 11 as a whole is not too low, cracking of the conductive layer 13 due to expansion deformation of the insulating layer 11 under heating can be easily suppressed.
- the columnar resin 12 When 02/01 (or ⁇ 2/04) is at least the lower limit, the columnar resin 12 has appropriate strength, so the conductive layer 13 can be easily retained stably, and when it is at most the upper limit, the first insulating layer Since the strength of 1 1 8 (or 2nd insulating layer 11 1m) is not too low, the conductive layer associated with the expansion deformation of 1st insulating layer 1 1 8 (or 2nd insulating layer 1 1m) under heating It is easy to suppress the cracks in 1 and 3.
- 9 to 9 are partial cross-sectional views showing the manufacturing process of the anisotropic conductive sheet 10 according to the present embodiment.
- the anisotropic conductive sheet 10 has 1) a support portion 21 and a plurality of pillar portions 22 arranged on one surface thereof.
- ⁇ 02020/175685 33 ⁇ (: 171-12020/008410
- a step of preparing a resin base material 20 composed of the second resin composition or its precursor (see FIG. 98), 2) a step of forming a conductive layer 13 on the surface of the pillar portion 2 2 ( (See Fig. 9), 3) Step of forming the second insulating layer 1 1 1 in the void between the plurality of pillars 2 2 (see Fig. 9), 4)
- the second insulating layer 1 1 1 A step of forming the first insulating layer 1 18 (see FIG. 90), and 5) a step of removing the supporting portion 21 of the resin substrate 20 (see FIG. 9), ..
- Embodiment 1 the step of filling the first resin composition 1 to form the insulating layer 11
- step 3 the step of filling the first resin composition 1 to form the insulating layer 11
- step 3 the step of filling the first resin composition 1 to form the insulating layer 11
- step 3 the step of filling the first resin composition 1 to form the insulating layer 11
- step 3 the step of filling the first resin composition 1 to form the insulating layer 11
- the step (see FIG. 90) and 4) the step (see FIG. 90) of forming the first insulating layer 1 18 on the second insulating layer 11 1 are performed.
- the method for producing the anisotropic conductive sheet 10 can be the same.
- the steps 1), 2) and 5) in the present embodiment are the same as the steps 1), 2) and 4) in the first embodiment, respectively.
- the gap between the plurality of pillars 2 2 is filled with the second insulating layer 11 1 (see Fig. 90).
- the gap between the plurality of pillars 22 is filled with a fourth elastomer composition (precursor of the fourth resin composition) for obtaining the second insulating layer 11.
- a fourth elastomer composition precursor of the fourth resin composition
- the filling of the fourth elastomer composition can be performed by any method, for example, a dispenser.
- the filled fourth elastomer composition is dried or heated to crosslink the elastomer composition.
- the second insulating layer 11 made of the fourth elastomer composition bridge (fourth resin composition) is formed.
- the drying or heating may be performed to such an extent that the fourth elastomer composition is crosslinked.
- the drying or heating temperature may preferably be 100 to 170 ° .
- the drying or heating time may be, for example, 5 to 60 minutes, depending on the drying or heating temperature.
- the first insulating layer 1 1 8 is formed on the second insulating layer 1 1 1 in the space between the plurality of pillars 2 2 (see FIG. 90).
- the void portion between the plurality of pillar portions 22 is filled with the first elastomer composition (precursor of the first resin composition) for obtaining the first insulating layer 1 18 (See Fig. 9, mouth).
- the filling of the first elastomer composition can be performed by the same method as described above.
- the filled first elastomer composition is dried or heated in the same manner as described above to crosslink the elastomer composition.
- the first insulating layer 11 made of the crosslinked product of the first elastomer composition (first resin composition) is formed.
- the drying or heating can be performed under the same conditions as the drying or heating in the step 3).
- the anisotropic conductive sheet 10 according to the present embodiment can be used in an electrical inspection device and an electrical inspection method, as in the first embodiment.
- the contents of the electric inspection device and the electric inspection method are the same as those in the first embodiment.
- the anisotropic conductive sheet 10 according to the present embodiment has a second insulating layer 11 1. Thereby, in addition to the effects described in the first embodiment, the following effects are further exhibited.
- the anisotropic conductive sheet is placed on the inspection substrate 120 of the electric inspection device 100.
- the device can be mounted and fixed on the device simply by mounting the device. Therefore, it is not necessary to use a fixing jig to attach and fix the anisotropically conductive sheet to the measuring device as in the past, and it does not take time and effort to attach and fix the anisotropic conductive sheet to the measuring device. You can
- the anisotropic conductive sheet 10 shown in FIG. 8 is shown in the above embodiment, the anisotropic conductive sheet 10 is not limited to this.
- the anisotropic conductive sheet 10 may further have a layer other than the above if necessary. Examples of other layers ⁇ 0 2020/175685 35
- FIG. 10 is a partial sectional view showing an anisotropic conductive sheet 10 according to a modification.
- the anisotropic conductive sheet 10 includes a plurality of adhesive layers 15 which are arranged at least at a part between the plurality of conductive layers 13 and the insulating layer 11 respectively. May be further included.
- the adhesive layer 15 may be composed of a cross-linked product of an elastomer composition containing an elastomer and a cross-linking agent; a resin composition containing a resin that is not an elastomer, or a curable resin that is not an elastomer It may be composed of a cured product of a resin composition containing an agent.
- the elastomer and the cross-linking agent the same ones as those listed as the elastomer and the cross-linking agent in the above-mentioned second elastomer composition can be used.
- the non-elastomer resin and curing agent the same resins and curing agents as those mentioned above as the non-elastomer resin and curing agent in the second resin composition can be used.
- the adhesive layer 15 may be a layer containing a polycondensate of alkoxysilane or an oligomer thereof. Alkoxysilane or its oligomer may be a commercially available product, and examples thereof include Colcoat 1 ⁇ !-103X manufactured by Colcoat and Colcoat.
- the adhesive layer 15 and its constituent material may be the same as the adhesive layer and its constituent material of the second embodiment.
- anisotropic conductive sheet 10 may further include a transition layer (not shown) disposed between the first insulating layer 1 18 and the second insulating layer 11 1.
- the transition layer may be a cross-linked product of an elastomer composition containing an elastomer and a cross-linking agent, similar to the first insulating layer 11 8 and the second insulating layer 11 1, for example.
- the degree of crosslinking (gel fraction) of the crosslinked material of the elastomer composition forming the transition layer is equal to the degree of crosslinking (gel of the first elastomer composition forming the first insulating layer 11 8 (gel). ⁇ 02020/175685 36 ((171?2020/008410
- the adhesion between the first insulating layer 1 18 and the second insulating layer 11 1 can be further enhanced.
- the electrolyte layer is, for example, a film containing a lubricant.
- the lubricant contained in the electrolyte layer is preferably a metal salt of an alkyl sulfonic acid from the viewpoint that it has less adverse effects such as contamination of the electrode of the inspection object and particularly less adverse effects when used at high temperatures.
- the electrolyte layer may be arranged on the entire surface of the anisotropic conductive sheet 10 on the first surface 1 13 side.
- the conductive layer 1 3 an example is shown in which is disposed on the end face 1 2 3 columnar resin 1 2 is not limited to this, also on the end face 1 2 ⁇ It may be further arranged.
- the conductive layer 13 does not have to be arranged on the end face 1 2 3 and the clearance of the columnar resin 12 . That is, the end surface 12 3 of the columnar resin 12 may be exposed on the first surface 1 13 side, and the end surface 1 2 s surface may be exposed on the second surface 1 1 s surface side.
- the fourth elastomer composition (precursor of the fourth resin composition) is crosslinked to form the anisotropic conductive sheet 10. 2
- the first elastomer composition (precursor of the 1st resin composition) is crosslinked to form the first insulating layer 1 1
- the cross-linking of the fourth elastomer composition in step 3) is ⁇ 02020/175685 37 ((171?2020/008410
- the second insulating layer 11 1 and the first insulating layer 1 18 may be simultaneously formed by simultaneously performing the crosslinking of the material.
- the second insulating layer 1 1 1 may be formed in step 4).
- the first insulating layer 1 18 having low adhesiveness can be cut, and the handling property becomes good.
- the cross-linking of the fourth elastomer composition in the step 3) and the cross-linking of the first elastomer composition in the step 4) may be simultaneously performed.
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Abstract
Description
Claims
Priority Applications (4)
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JP2021502653A JP7295217B2 (ja) | 2019-02-28 | 2020-02-28 | 異方導電性シート、電気検査装置および電気検査方法 |
KR1020217027189A KR102637066B1 (ko) | 2019-02-28 | 2020-02-28 | 이방 도전성 시트, 전기 검사 장치 및 전기 검사 방법 |
US17/434,458 US20220151069A1 (en) | 2019-02-28 | 2020-02-28 | Anisotropic conductive sheet, electrical inspection apparatus, and electrical inspection method |
CN202080016609.1A CN113544228B (zh) | 2019-02-28 | 2020-02-28 | 各向异性导电片、电气检查装置及电气检查方法 |
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WO1998007216A1 (fr) * | 1996-08-08 | 1998-02-19 | Nitto Denko Corporation | Film conducteur anisotrope et procede de fabrication |
JP2000322937A (ja) * | 1999-05-13 | 2000-11-24 | Jsr Corp | 異方導電性シートおよびその製造方法並びに回路装置の電気的検査装置および電気的検査方法 |
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JP2013008591A (ja) * | 2011-06-24 | 2013-01-10 | Shin Etsu Polymer Co Ltd | 異方導電性コネクタおよび異方導電性コネクタの製造方法 |
JP2016037513A (ja) * | 2014-08-05 | 2016-03-22 | デクセリアルズ株式会社 | 異方性導電接着剤、その製造方法、接続構造体及びその製造方法 |
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JPH0417282A (ja) | 1990-05-10 | 1992-01-22 | Shibata Ind Co Ltd | 異方導電性シートの製造方法 |
JP6560156B2 (ja) | 2015-05-07 | 2019-08-14 | 信越ポリマー株式会社 | 異方導電性シートおよびその製造方法 |
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2020
- 2020-02-28 WO PCT/JP2020/008410 patent/WO2020175685A1/ja active Application Filing
- 2020-02-28 KR KR1020217027189A patent/KR102637066B1/ko active IP Right Grant
- 2020-02-28 CN CN202080016609.1A patent/CN113544228B/zh active Active
- 2020-02-28 JP JP2021502653A patent/JP7295217B2/ja active Active
- 2020-02-28 US US17/434,458 patent/US20220151069A1/en active Pending
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JPS5463200U (ja) * | 1977-10-13 | 1979-05-02 | ||
JPH09115577A (ja) * | 1995-10-06 | 1997-05-02 | Whitaker Corp:The | コネクタ及びコネクタ製造方法 |
WO1998007216A1 (fr) * | 1996-08-08 | 1998-02-19 | Nitto Denko Corporation | Film conducteur anisotrope et procede de fabrication |
JP2000322937A (ja) * | 1999-05-13 | 2000-11-24 | Jsr Corp | 異方導電性シートおよびその製造方法並びに回路装置の電気的検査装置および電気的検査方法 |
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JP2005201892A (ja) * | 2003-12-18 | 2005-07-28 | Jsr Corp | 異方導電性コネクターおよび回路装置の検査方法 |
JP2013008591A (ja) * | 2011-06-24 | 2013-01-10 | Shin Etsu Polymer Co Ltd | 異方導電性コネクタおよび異方導電性コネクタの製造方法 |
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CN113544228A (zh) | 2021-10-22 |
KR20210118161A (ko) | 2021-09-29 |
CN113544228B (zh) | 2023-05-30 |
US20220151069A1 (en) | 2022-05-12 |
JPWO2020175685A1 (ja) | 2021-10-07 |
TW202045345A (zh) | 2020-12-16 |
JP7295217B2 (ja) | 2023-06-20 |
KR102637066B1 (ko) | 2024-02-14 |
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