WO2022030634A1 - 配線形成用部材、配線形成用部材を用いた配線層の形成方法、及び、配線形成部材 - Google Patents
配線形成用部材、配線形成用部材を用いた配線層の形成方法、及び、配線形成部材 Download PDFInfo
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- WO2022030634A1 WO2022030634A1 PCT/JP2021/029403 JP2021029403W WO2022030634A1 WO 2022030634 A1 WO2022030634 A1 WO 2022030634A1 JP 2021029403 W JP2021029403 W JP 2021029403W WO 2022030634 A1 WO2022030634 A1 WO 2022030634A1
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- Prior art keywords
- wiring
- layer
- forming member
- metal foil
- adhesive layer
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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
-
- 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
- H05K3/389—Improvement of the adhesion between the insulating substrate and the metal by the use of a coupling agent, e.g. silane
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
-
- 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
- H05K3/382—Improvement of the adhesion between the insulating substrate and the metal by special treatment of the metal
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4652—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern
- H05K3/4655—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern by using a laminate characterized by the insulating layer
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4652—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern
- H05K3/4658—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern characterized by laminating a prefabricated metal foil pattern, e.g. by transfer
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- H10W70/60—
-
- 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
- H05K2201/0183—Dielectric layers
- H05K2201/0195—Dielectric or adhesive layers comprising a plurality of layers, e.g. in a multilayer structure
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0278—Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive
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- H10W70/66—
Definitions
- the present disclosure relates to a wiring forming member, a method for forming a wiring layer using a wiring forming member, and a wiring forming member.
- Patent Document 1 discloses a method for manufacturing a printed wiring board containing an electronic component such as an IC chip.
- insulating resin layers 102 and 103 are formed on both sides of the electronic component 101 provided with the electrode 101a in the stacking direction.
- FIGS. 7 (c) and 7 (d) via electrodes reaching each electrode 101a of the electronic component 101 by drilling holes with a laser, forming a plating layer, forming electrodes by etching, and the like.
- 104 and 105 are formed on the insulating resin layers 102 and 103, respectively. Then, as shown in FIGS.
- a wiring forming member and a wiring forming member capable of more reliably performing and stabilizing electrical conduction between wirings and simplifying the process of forming a wiring layer connecting the wirings are used. It is an object of the present invention to provide a method for forming a wiring layer and a wiring forming member.
- the wiring forming member includes an adhesive layer made of an adhesive composition containing conductive particles, and a metal foil layer arranged on the adhesive layer.
- the ratio of the surface roughness Rz of the surface to be adhered to the adhesive layer of the metal foil layer to the average particle size of the conductive particles is 0.05 to 3. In addition, this ratio can be expressed by surface roughness Rz / average particle diameter.
- the ratio of the surface roughness Rz of the surface to be adhered to the adhesive layer of the metal foil layer to the average particle size of the conductive particles is 0.05 to 3. Therefore, as compared with the case where the ratio of the surface roughness Rz of the surface to be adhered to the adhesive layer of the metal foil layer to the average particle size of the conductive particles is larger than 3 (see, for example, FIG. 3).
- the conductive particles can be more reliably crushed into a flat shape to increase the contact area of the conductive particles with the metal foil layer (see, for example, FIG. 4). As a result, it is possible to stabilize the electrical conduction between the metal foil layer that becomes the wiring pattern or wiring after processing and another wiring pattern or wiring to which the adhesive layer is adhered.
- this wiring forming member a construction method using an adhesive layer can be realized, so that a wiring layer forming process connecting wirings is performed as compared with a conventional process of performing laser processing and filled plating processing. Can be simplified.
- the wiring forming member includes an adhesive layer made of an adhesive composition containing conductive particles, and a metal foil layer arranged on the adhesive layer.
- the surface roughness Rz of the surface of the metal foil layer to be adhered to the adhesive layer is smaller than 20 ⁇ m.
- the surface roughness Rz of the surface of the metal foil layer to be adhered to the adhesive layer is smaller than 20 ⁇ m, and the surface roughness of the surface of the metal foil layer to be adhered to the adhesive layer is reduced. ing. Therefore, compared to the case where the surface roughness of the surface of the metal foil layer on the adhesive layer side is rough (see, for example, FIG. 3), the conductive particles are more reliably crushed into a flat shape and the metal foil layer of the conductive particles is formed. The contact area with can be increased (see, for example, FIG. 4). As a result, it is possible to stabilize the electrical conduction between the metal foil layer that becomes the wiring pattern or wiring after processing and another wiring pattern or wiring to which the adhesive layer is adhered.
- this wiring forming member a construction method using an adhesive layer can be realized, so that a wiring layer forming process connecting wirings is performed as compared with a conventional process of performing laser processing and filled plating processing. Can be simplified.
- the surface roughness Rz of the metal foil layer may be 0.5 ⁇ m or more and 10 ⁇ m or less.
- the conductive particles of the metal foil layer can be more reliably deformed into a flat shape, and another wiring pattern or wiring to which the metal foil layer and the adhesive layer to be the wiring pattern or wiring after processing are adhered to each other can be performed more reliably.
- the electrical continuity between and can be made more stable.
- the average particle size of the conductive particles may be 2 ⁇ m or more and 20 ⁇ m or less.
- the wiring forming member itself can be made thinner, and the wiring layer made by the wiring forming member and the substrate containing the wiring layer can be made thinner.
- the shortest distance from the surface of the metal foil layer in contact with the adhesive layer to the surface of the conductive particles may be larger than 0 ⁇ m and 1 ⁇ m or less.
- the metal foil layer makes it possible to more reliably and crush the plurality of conductive particles into a flat shape of the same degree. Further, by unevenly distributing the conductive particles on the metal foil side in this way, it is possible to improve the catching rate of the conductive particles on the wiring (electrode) and the like, and further stabilize the conduction.
- the adhesive layer may have a first adhesive layer in which conductive particles are contained in the adhesive component and a second adhesive layer, and the adhesive layer may have a first adhesive layer. May be located between the metal foil layer and the second adhesive layer.
- the conductive particles are arranged on the side of the metal foil layer, it is possible to more reliably and crush the plurality of conductive particles into a flat shape of the same degree by the metal foil layer to improve the conductivity. It becomes. Further, by unevenly distributing the conductive particles on the metal foil side in this way, it is possible to improve the catching rate of the conductive particles on the wiring (electrode) and the like, and further stabilize the conduction.
- the second adhesive layer may have an embodiment in which the conductive particles are not contained in the adhesive component, and in this case, the portion to be insulated can be more reliably insulated. In this case, the second adhesive layer may contain a member such as a filler.
- the wiring forming member may further include a release film.
- the wiring forming member becomes easy to handle as a member, and the work efficiency when forming the wiring layer by using the wiring forming member can be improved.
- this release film can be used by arranging it on the surface of the adhesive layer opposite to the metal foil layer.
- an adhesive layer made of an adhesive composition containing conductive particles and a metal foil layer are provided as separate bodies, and the adhesive layer can be adhered to the metal foil layer at the time of use. It relates to a member for forming a wiring.
- the ratio of the surface roughness Rz of the surface to be adhered to the adhesive layer of the metal foil layer to the average particle size of the conductive particles is 0.05 to 3.
- the resistance value in this electrical conduction can be reduced.
- the adhesive layer and the metal foil layer can be prepared separately (as a set of wiring forming members), a wiring forming member having a more optimum material configuration can be selected, and the wiring forming member can be used. It is possible to improve the degree of freedom of work when manufacturing a wiring layer by using it.
- an adhesive layer made of an adhesive composition containing conductive particles and a metal foil layer are provided as separate bodies, and the adhesive layer can be adhered to the metal foil layer at the time of use. It relates to a member for forming a wiring.
- the surface roughness Rz of the surface of the metal foil layer on the side to be adhered to the adhesive layer is smaller than 20 ⁇ m. In this case, similarly to the above, it is possible to stabilize the electrical conduction between the metal foil layer that becomes the wiring pattern or wiring after processing and another wiring pattern or wiring to which the adhesive layer is adhered.
- the present disclosure relates to a method of forming a wiring layer using any of the above wiring forming members.
- the method for forming the wiring layer includes a step of preparing any of the above wiring forming members, a step of preparing a base material on which the wiring is formed, and a surface on which the wiring of the base material is formed so as to cover the wiring.
- the wiring forming member is arranged so that the adhesive layer faces the base material, the wiring forming member is heat-bonded to the base material, and the metal foil layer is patterned. It is equipped with a process. According to this forming method, the processing process can be greatly simplified as compared with the conventional method. Further, according to this forming method, the formed wiring layer can be easily thinned.
- the wiring forming member includes a base material having wiring and a cured product of any of the above wiring forming members arranged on the base material so as to cover the wiring.
- the wiring and another wiring formed from the metal foil of the wiring forming member or the metal foil are electrically connected. According to this aspect, it is possible to obtain a wiring forming member in which the wiring layer is thinned.
- FIG. 1 is a cross-sectional view showing a wiring forming member according to an embodiment of the present disclosure.
- 2 (a) to 2 (d) are diagrams for sequentially explaining a method of forming a wiring layer using the wiring forming member shown in FIG. 1.
- FIG. 3 is a cross-sectional view for explaining a wiring forming member according to a comparative example and a state in which the wiring forming member is crimped.
- FIG. 4 is a cross-sectional view for explaining a wiring forming member according to an embodiment of the present disclosure and a state in which the wiring forming member is crimped.
- FIGS. 7A to 7D are cross-sectional views for sequentially explaining a method of manufacturing a conventional component-embedded substrate.
- 8 (a) to 8 (c) are cross-sectional views for sequentially explaining a method of manufacturing a conventional component-embedded substrate, and show a process following FIG. 7.
- the numerical range indicated by using “-" in this specification includes the numerical values before and after "-" as the minimum value and the maximum value, respectively. Further, in the numerical range described stepwise in the present specification, the upper limit value or the lower limit value described in one numerical range is replaced with the upper limit value or the lower limit value of the numerical range described stepwise. May be good. Further, in the numerical range described in the present specification, the upper limit value or the lower limit value of the numerical range may be replaced with the value shown in the examples.
- FIG. 1 is a cross-sectional view showing a wiring forming member according to an embodiment of the present disclosure.
- the wiring forming member 1 includes an adhesive layer 10 and a metal foil layer 20.
- the wiring forming member 1 is not limited to these, but is a member that can be used, for example, when manufacturing a rewiring layer, a build-up multilayer wiring board, a component-embedded substrate, and the like. Further, the wiring forming member 1 may be used for an EMI shield or the like.
- the adhesive layer 10 includes a conductive particle 12 and an adhesive layer 14 containing an insulating adhesive component in which the conductive particles 12 are dispersed.
- the adhesive layer 10 has a thickness of, for example, 5 ⁇ m to 20 ⁇ m.
- the adhesive component of the adhesive layer 14 is defined as a solid content other than the conductive particles 12.
- the adhesive layer 14 may be in a B stage state in which the surface is dried, that is, in a semi-cured state, before the wiring layer is formed by the wiring forming member 1.
- the conductive particles 12 are substantially spherical particles having conductivity, such as metal particles made of metal such as Au, Ag, Ni, Cu, and solder, or conductive carbon particles made of conductive carbon. It is composed of.
- the conductive particles 12 may be coated conductive particles including a core containing non-conductive glass, ceramic, plastic (polystyrene, etc.) and a coating layer containing the metal or conductive carbon and covering the core. good.
- the conductive particles 12 are coated conductive particles including metal particles formed of a heat-meltable metal or a core containing plastic, and a coating layer containing metal or conductive carbon and covering the core. There may be.
- the conductive particles 12 include a core made of polymer particles (plastic particles) such as polystyrene, and a metal layer covering the core.
- the polymer particles may be substantially entirely covered with a metal layer on the surface thereof, and a part of the surface of the polymer particles is exposed without being covered with the metal layer as long as the function as a connecting material is maintained. You may be doing it.
- the polymer particles may be, for example, particles containing a polymer containing at least one monomer selected from styrene and divinylbenzene as a monomer unit.
- the metal layer may be formed of various metals such as Ni, Ni / Au, Ni / Pd, Cu, NiB, Ag, and Ru.
- the metal layer may be an alloy layer made of an alloy of Ni and Au, an alloy of Ni and Pd, or the like.
- the metal layer may have a multi-layer structure composed of a plurality of metal layers.
- the metal layer may be composed of a Ni layer and an Au layer.
- the metal layer may be made by plating, vapor deposition, sputtering, soldering or the like.
- the metal layer may be a thin film (for example, a thin film formed by plating, vapor deposition, sputtering, or the like).
- the conductive particles 12 may have an insulating layer. Specifically, for example, an insulating layer that further covers the coating layer is provided outside the coating layer of the conductive particles of the above embodiment including the core (for example, polymer particles) and a coating layer such as a metal layer that covers the core. It may be provided.
- the insulating layer may be the outermost surface layer located on the outermost surface of the conductive particles.
- the insulating layer may be a layer formed of an insulating material such as silica or acrylic resin.
- the average particle size Dp of the conductive particles 12 may be 1 ⁇ m or more, 2 ⁇ m or more, or 5 ⁇ m or more from the viewpoint of excellent dispersibility and conductivity.
- the average particle size Dp of the conductive particles may be 50 ⁇ m or less, 30 ⁇ m or less, or 20 ⁇ m or less from the viewpoint of excellent dispersibility and conductivity. From the above viewpoint, the average particle size Dp of the conductive particles may be 1 to 50 ⁇ m, 5 to 30 ⁇ m, 5 to 20 ⁇ m, or 2 to 20 ⁇ m.
- the maximum particle size of the conductive particles 12 may be smaller than the minimum distance between the electrodes in the wiring pattern (the shortest distance between adjacent electrodes).
- the maximum particle size of the conductive particles 12 may be 1 ⁇ m or more, 2 ⁇ m or more, or 5 ⁇ m or more from the viewpoint of excellent dispersibility and conductivity.
- the maximum particle size of the conductive particles may be 50 ⁇ m or less, 30 ⁇ m or less, or 20 ⁇ m or less from the viewpoint of excellent dispersibility and conductivity. From the above viewpoint, the maximum particle size of the conductive particles may be 1 to 50 ⁇ m, 2 to 30 ⁇ m, or 5 to 20 ⁇ m.
- the particle size of 300 arbitrary particles is measured by observation using a scanning electron microscope (SEM), and the average value of the obtained particle sizes is defined as the average particle size Dp. The largest value obtained is taken as the maximum particle size of the particles.
- the particle size of the particle is the diameter of a circle circumscribing the particle in the SEM image.
- the content of the conductive particles 12 is determined according to the fineness of the electrodes to be connected and the like.
- the blending amount of the conductive particles 12 is not particularly limited, but is 0.1% by volume or more based on the total product of the adhesive component (component excluding the conductive particles in the adhesive composition). It may be 0.2% by volume or more. When the blending amount is 0.1% by volume or more, the decrease in conductivity tends to be suppressed.
- the blending amount of the conductive particles 12 may be 30% by volume or less, or 10% by volume or less, based on the total product of the adhesive components (components excluding the conductive particles 12 in the adhesive composition). May be good.
- volume% is determined based on the volume of each component before curing at 23 ° C., and the volume of each component can be converted from weight to volume by using the specific gravity.
- the volume of the component is increased by adding the component to a measuring cylinder or the like containing an appropriate solvent (water, alcohol, etc.) that does not dissolve or swell the component and wets the component well. It can also be calculated as a volume.
- the adhesive component constituting the adhesive layer 14 contains a curing agent, a monomer, and a film forming material.
- a curing agent such as a peroxide compound or an azo compound that decomposes by heating to generate free radicals can be used.
- the curing agent is appropriately selected depending on the target connection temperature, connection time, storage stability, etc.
- the curing agent may have a gel time of 10 seconds or less at a predetermined temperature from the viewpoint of high reactivity, and the epoxy may be stored at 40 ° C. for 10 days in a constant temperature bath from the viewpoint of storage stability.
- the gel time may be the same as that of the resin composition.
- the curing agent may be a sulfonium salt.
- the curing agent is appropriately selected depending on the target connection temperature, connection time, storage stability, etc. From the viewpoint of high reactivity and storage stability, it may be an organic peroxide or an azo compound having a half-life of 10 hours of 40 ° C. or higher and a half-life of 1 minute of 180 ° C. or lower, and has a half-life of 10. It may be an organic peroxide or an azo compound having an hour temperature of 60 ° C. or higher and a half-life of 170 ° C. or lower. These curing agents can be used alone or in combination, or may be used in combination with a decomposition accelerator, an inhibitor, and the like.
- the amount of the curing agent to be blended is the same as that of the monomer described below and the film forming material described below in order to obtain a sufficient reaction rate. It may be 0.1 part by mass to 40 parts by mass or 1 part by mass to 35 parts by mass with respect to 100 parts by mass in total. If the blending amount of the curing agent is less than 0.1 parts by mass, a sufficient reaction rate cannot be obtained, and it tends to be difficult to obtain good adhesive strength and small connection resistance. On the other hand, when the blending amount of the curing agent exceeds 40 parts by mass, the fluidity of the adhesive tends to decrease, the connection resistance tends to increase, and the storage stability of the adhesive tends to decrease.
- the bisphenol type epoxy resin derived from epichlorohydrin and bisphenol A, bisphenol F, bisphenol AD, etc., and the epoxy novolak resin or glycidyl derived from epichlorohydrin and phenol novolac or cresol novolac When an epoxy resin monomer is used as the monomer, the bisphenol type epoxy resin derived from epichlorohydrin and bisphenol A, bisphenol F, bisphenol AD, etc., and the epoxy novolak resin or glycidyl derived from epichlorohydrin and phenol novolac or cresol novolac.
- Various epoxy compounds having two or more glycidyl groups in one molecule such as amine, glycidyl ether, biphenyl, and alicyclic type can be used.
- the radically polymerizable compound may be a substance having a functional group that is polymerized by radicals.
- examples of such radically polymerizable compounds include (meth) acrylates, maleimide compounds, and styrene derivatives.
- the radically polymerizable compound can be used in either a monomer or an oligomer state, and the monomer and the oligomer may be mixed and used. One of these monomers may be used alone, or two or more thereof may be mixed and used.
- the film forming material is a polymer having an action of facilitating the handling of a composition having a low viscosity containing the above-mentioned curing agent and monomer.
- a thermoplastic resin is preferably used, and phenoxy resin, polyvinylformal resin, polystyrene resin, polyvinylbutyral resin, polyester resin, polyamide resin, xylene resin, polyurethane resin, polyacrylic resin, polyester urethane resin and the like are used. Can be mentioned. Further, these polymers may contain siloxane bonds and fluorine substituents. These resins can be used alone or in admixture of two or more. Among the above resins, a phenoxy resin may be used from the viewpoint of adhesive strength, compatibility, heat resistance, and mechanical strength.
- the molecular weight of the thermoplastic resin may be 5000 to 150,000 or 10,000 to 80,000 in terms of weight average molecular weight. When the weight average molecular weight is 5000 or more, good film forming property is easily obtained, and when it is 150,000 or less, good compatibility with other components is easily obtained.
- the weight average molecular weight refers to a value measured by a gel permeation chromatograph (GPC) using a calibration curve using standard polystyrene according to the following conditions.
- GPC gel permeation chromatograph
- Equipment GPC-8020 manufactured by Tosoh Corporation Detector: RI-8020 manufactured by Tosoh Corporation Column: Gelpack GLA160S + GLA150S manufactured by Hitachi Kasei Co., Ltd. Sample concentration: 120 mg / 3 mL
- Solvent Tetrahydrofuran Injection amount: 60 ⁇ L Pressure: 2.94 x 106 Pa (30 kgf / cm 2 ) Flow rate: 1.00 mL / min
- the content of the film forming material may be 5% by weight to 80% by weight or 15% by weight to 70% by weight based on the total amount of the curing agent, the monomer and the film forming material.
- the curable composition tends to show good fluidity.
- the adhesive layer forming the adhesive layer 10 includes a filler, a softener, an accelerator, an antiaging agent, a colorant, a flame retardant, a thixotropic agent, a coupling agent, a phenol resin, a melamine resin, and an isocyanate. It may further contain a kind or the like.
- the maximum diameter of the filler may be less than the particle size of the conductive particles 12, and the content of the filler may be 5 parts by volume to 60 parts by volume with respect to 100 parts by volume of the adhesive layer. When the content of the filler is 5 parts by volume to 60 parts by volume, good connection reliability tends to be obtained.
- the surface roughness Rz of the surface opposite to one surface of the metal foil layer 20 may be the same, but may be different.
- the metal foil layer 20 has a thickness of, for example, 5 ⁇ m to 200 ⁇ m.
- the thickness of the metal foil layer referred to here is a thickness including the surface roughness Rz.
- the metal foil layer 20 is, for example, copper foil, aluminum foil, nickel foil, stainless steel, titanium, or platinum.
- the adhesive layer 10 is arranged on the first surface 20a of the metal foil layer 20.
- the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be 0.3 ⁇ m or more, 0.5 ⁇ m or more, or 1.0 ⁇ m or more. Further, the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be 50 ⁇ m or less, 40 ⁇ m or less, 30 ⁇ m or less, or 20 ⁇ m or less. It may be smaller than 20 ⁇ m, 17 ⁇ m or less, 10 ⁇ m or less, 8.0 ⁇ m or less, 5.0 ⁇ m or less, 3.0 ⁇ m or less. good.
- the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be, for example, 0.3 ⁇ m or more and 20 ⁇ m or less, 0.3 ⁇ m or more and less than 20 ⁇ m, and more specifically, 0.5 ⁇ m. It may be 10 ⁇ m or more and 10 ⁇ m or less.
- the surface roughness Rz of the second surface 20b of the metal foil layer 20 may be, for example, 20 ⁇ m or more, may be coarser than the surface roughness Rz of the first surface 20a, and has the same surface as the first surface 20a. It may be rough, and may not be coarser than the surface roughness Rz of the first surface 20a.
- the surface roughness Rz of the first surface 20a of the metal foil layer 20 is too smooth (for example, the surface roughness Rz is 0.2 ⁇ m), the adhesiveness between the metal foil layer 20 and the adhesive layer 10 is maintained for a long period of time. It may not be maintained and may come off. Therefore, the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be 0.3 ⁇ m or more. However, the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be smaller than 0.3 ⁇ m by adopting a material or a connection configuration capable of ensuring adhesiveness.
- Surface roughness Rz means ten-point average roughness Rzjis measured in accordance with the method specified in JIS standard (JIS B 0601-2001), and is measured using a commercially available surface roughness shape measuring machine. The value. For example, measurement is possible using a nanosearch microscope (“SFT-3500” manufactured by Shimadzu Corporation).
- the "surface roughness / average particle size" which is the ratio of the surface roughness Rz of the first surface 20a of the metal foil layer 20 to the average particle size Dp of the conductive particles 12, is 0.03 or more. It may be 0.04 or more, 0.05 or more, 0.06 or more, 0.1 or more, 0.2 or more. It may be present, it may be 0.3 or more, it may be 0.5 or more, and it may be 1 or more.
- the "surface roughness / average particle size" which is the ratio of the surface roughness Rz of the first surface 20a of the metal foil layer 20 to the average particle size Dp of the conductive particles 12, may be 3 or less. It may be 2 or less, 1.7 or less, or 1.5 or less.
- the "surface roughness / average particle size”, which is the ratio of the surface roughness Rz of the first surface 20a of the metal foil layer 20 to the average particle size Dp of the conductive particles 12, is, for example, 0.05 or more and 3 or less. More specifically, it may be 0.06 or more and 2 or less.
- the "surface roughness / average particle size" which is the ratio of the surface roughness Rz of the first surface 20a of the metal foil layer 20 to the average particle size Dp of the conductive particles 12, is 0.05 to 3.
- the surface roughness Rz of the first surface 20a of the metal foil layer 20 and the average particle size Dp of the conductive particles 12 are controlled so as to be within the range.
- the present disclosure relates to a method of forming a wiring layer using a wiring forming member as another aspect.
- a method of forming a wiring layer using the wiring forming member 1 described above will be described with reference to FIG. 2 (a) to 2 (d) are views showing a method of forming a wiring layer using the wiring forming member shown in FIG. 1.
- the wiring forming member 1 is prepared. Further, the base material 30 on which the wiring 32 is formed is prepared. Then, the wiring forming member 1 is arranged so that the adhesive layer 10 side of the wiring forming member 1 faces the base material 30. After that, as shown in FIG. 2B, laminating is performed so as to cover the wiring 32, and the wiring forming member 1 is attached onto the base material 30.
- the wiring forming member 1 is subjected to predetermined heating and pressurization, and the base material 30 is crimped.
- the conductive particles 12 that need to ensure conductivity are more reliably transformed into the flat conductive particles 12a. It can be transformed.
- the flattened conductive particles 12a (the insulating layer is destroyed by this and the conductive portion is exposed) are arranged on the wiring 32, and the metal foil layer 20 and the wiring are arranged. Reliable electrical continuity with 32 can be achieved.
- the adhesive layer 14 is also crushed to become a thinner adhesive layer 14a.
- a predetermined patterning process for example, etching process
- the metal foil layer 20 may process the metal foil layer 20 into a predetermined wiring pattern 20c (another wiring).
- the second surface 20b of the metal foil layer 20 may be treated so as to have a smooth surface.
- the wiring layer may be formed by repeating the processes (a) to (d) of FIG. 2 described above a predetermined number of times.
- the method of forming the wiring layer using the wiring forming member includes a step of preparing the wiring forming member, a step of preparing a base material on which the wiring is formed, and a step of preparing the base material so as to cover the wiring.
- the foil layer is provided with a step of performing a patterning process.
- the wiring forming member 1b includes a base material 30 having the wiring 32, a cured product of the wiring forming member 1 arranged on the base material 30 so as to cover the wiring 32 (heat-bonded wiring forming member), and the wiring forming member 1b.
- the wiring 32 and the metal foil 20 of the wiring forming member 1 or the wiring 20c formed from the metal foil 20 are electrically connected by the conductive particles 12a.
- the wiring forming member 1b may have a configuration having a plurality of wiring layers (layers in which the wirings described above are connected to each other). ..
- FIG. 3 is a cross-sectional view for explaining a state in which the wiring forming member 101 and the wiring forming member 101 according to the comparative example are crimped.
- FIG. 4 is a cross-sectional view for explaining a state in which the wiring forming member 1 and the wiring forming member 1 according to the embodiment of the present disclosure are crimped.
- the metal leaf layer 120 of the wiring forming member 101 according to the comparative example has a matte surface having a rough surface roughness (referred to as a surface roughness Rz1) arranged toward the adhesive layer 110, it is conductive.
- the "surface roughness / average particle size" which is the ratio of the surface roughness Rz1 of the matte surface of the metal foil layer 120 to the average particle size Dp of the sex particles 112, may be larger than 3.
- the conductive particles 112 are crushed by the metal foil layer 120 and do not have a flat shape but remain close to a grain shape, the contact area remains small. Further, when the conductive particles 112 have an insulating layer on the outermost layer, the insulating layer is not sufficiently destroyed. Therefore, in the wiring forming member 1 according to such a comparative example, the conduction between the wirings is not stable.
- the conductive particles are formed when crimped. 12 can be more reliably crushed and transformed into a desired flat shape. Further, even when the conductive particles 12 have an insulating layer on the outermost layer, the conductive particles 12 are sufficiently crushed, so that the insulating layer can be destroyed and the internal conductive portion can be exposed. In this case, since the area where the conductive portion of the conductive particles 12a comes into contact with the metal foil layer 20 and the other wiring can be sufficiently and widely secured, the conduction between the wiring can be more reliably stabilized.
- the surface roughness Rz of the first surface 20a on the side to be adhered to the adhesive layer 10 of the metal foil layer 20 with respect to the average particle size of the conductive particles 12 The ratio of is 0.05 to 3. Therefore, when the "surface roughness / average particle size", which is the ratio of the surface roughness Rz1 of the matte surface of the metal foil layer 120 to the average particle size Dp of the conductive particles 112 according to the comparative example, is larger than 3. Compared with (see FIG. 3), the conductive particles 12 and 12a can be more reliably crushed into a flat shape to increase the contact area of the conductive particles 12 and 12a with the metal leaf layer 20 (FIG. 4). reference).
- the wiring forming member 1 since the construction method using the adhesive layer can be realized, the process of forming the wiring layer connecting the wirings can be simplified as compared with the conventional construction method. ..
- the surface roughness Rz of the first surface 20a of the metal foil layer 20 may be smaller than 20 ⁇ m, or may be 0.5 ⁇ m or more and 10 ⁇ m or less.
- the conductive particles 12 can be more reliably deformed into a flat shape by the first surface 20a of the metal foil layer 20, the metal foil layer 20 and the adhesive layer 10 which become wiring patterns or wiring after processing can be performed. It is possible to more reliably stabilize the electrical continuity with other wiring patterns or wirings to which the is adhered.
- the average particle size of the conductive particles 12 may be 2 ⁇ m or more and 20 ⁇ m or less.
- the wiring forming member 1 itself can be made thinner, and the wiring layer made by the wiring forming member 1 and the substrate containing the wiring layer can be made thinner.
- the processing process can be greatly simplified as compared with the conventional method (see FIG. 6). Further, according to this forming method, the formed wiring layer can be easily thinned.
- the wiring forming member 1 has a configuration in which the conductive particles 12 are randomly or evenly dispersed in the adhesive layer 10.
- the conductive particles 12 may be arranged (unevenly distributed) on the metal foil layer 20 side.
- the conductive particles 12 are not exposed on the second surface 10b on the opposite side of the metal foil layer 20, and are between the conductive particles 12 and the first surface 20a of the metal foil layer 20.
- the thickness of the existing adhesive layer 10 may be larger than 0 ⁇ m or 0.1 ⁇ m and 1 ⁇ m or less.
- the conductive particles 12 are arranged on the metal foil layer 20 side, it is possible to more reliably crush the conductive particles 12 into a flat shape by the metal foil layer 20 in the wiring layer 1d. .. Further, by unevenly distributing the conductive particles 12 on the metal foil layer 20 side in this way, it is possible to improve the catching rate of the conductive particles 12 to the wiring (electrode) or the like. That is, the continuity can be made more stable.
- the distance between the above-mentioned conductive particles 12 and the first surface 20a of the metal foil layer 20 is in contact with the adhesive layer 10 of the metal foil layer 20. It means the shortest distance from the surface to the surface of the conductive particles 12, and is, for example, an average value at any 30 points.
- a wiring forming member is sandwiched between two pieces of glass (thickness: about 1 mm), 100 g of bisphenol A type epoxy resin (trade name: JER811, manufactured by Mitsubishi Chemical Co., Ltd.) and a curing agent (trade name:).
- the adhesive layer 10d may be formed separately from the first adhesive layer 10e and the second adhesive layer 10f.
- the adhesive component constituting the first adhesive layer 10e and the second adhesive layer 10f may be the same as the adhesive component constituting the adhesive layer 10 described above, but the second adhesive layer 10f may be used. Is different in that the conductive particles 12 are not dispersed, that is, they are not contained.
- the conductive particles 12 are dispersed, that is, contained in the first adhesive layer 10e.
- the conductive particles 12 are arranged on the metal foil layer 20 side as in the modification shown in FIG. 5B, the conductive particles are formed by the metal foil layer 20 in the wiring layer 1f.
- the continuity can be made more stable.
- the wiring forming members 1, 1c, 1e may be further provided with a release film.
- the release film may be adhered to the side opposite to the surface to which the metal foil layer 20 of the adhesive layers 10, 10c, 10d is adhered, and the adhesive layers 10, 10c, 10d of the metal foil layer 20 are adhered to the release film. It may be adhered to the side opposite to the surface. Further, the first surface 20a of the metal foil layer 20 may be adhered to the adhesive layers 10, 10c, 10d. In this case, the wiring forming member becomes easy to handle, and the work efficiency when forming the wiring layer by using the wiring forming member can be improved.
- the wiring forming member is a member in which the adhesive layer 10 and the metal foil layer 20 are adhered to each other
- the wiring forming member in the present embodiment is the adhesive layer 10 and the metal. It may be composed of a set product in which the foil layer 20 is provided as a separate body and the adhesive layer 10 can be adhered to the first surface 20a of the metal foil layer 20 at the time of use.
- the adhesive layer 10 and the metal foil layer 20 can be prepared separately (as a set of wiring forming members), wiring forming such as selecting a wiring forming member having a more optimum material configuration can be performed. It is possible to improve the degree of freedom of work when manufacturing a wiring layer using a member.
- thermoplastic resin As a thermoplastic resin, a phenoxy resin (trade name: FX-316, manufactured by Nippon Steel Chemical Co., Ltd.) was prepared.
- latent curing agent As a latent curing agent, a masterbatch type latent curing agent having a imidazole modified product as a nucleus and the surface of which is coated with polyurethane is dispersed in a liquid bisphenol F type epoxy resin with a microcapsule type curing agent having an average particle size of 5 ⁇ m.
- a sex curing agent (trade name: Novacure 3941, active temperature 125 ° C., manufactured by Asahi Kasei Chemicals) was prepared.
- conductive particles A1 (Preparation of conductive particles A1) As the conductive particles A1, a nickel layer having a thickness of 0.2 ⁇ m is provided on the surface of the particles having polystyrene as a core, and then a gold layer having a thickness of 0.02 ⁇ m is provided on the outside of the nickel layer to have an average particle size of 5 ⁇ m and a specific gravity. 2.3 conductive particles were prepared.
- conductive particles A2 (Preparation of conductive particles A2) As the conductive particles A2, a nickel layer having a thickness of 0.2 ⁇ m is provided on the surface of particles having polystyrene as a core, and then a gold layer having a thickness of 0.02 ⁇ m is provided on the outside of the nickel layer to have an average particle size of 10 ⁇ m and a specific gravity.
- the conductive particles of 2.1 were prepared.
- conductive particles A3 (Preparation of conductive particles A3) As the conductive particles A3, a nickel layer having a thickness of 0.2 ⁇ m is provided on the surface of particles having polystyrene as a core, and then a gold layer having a thickness of 0.02 ⁇ m is provided on the outside of the nickel layer to have an average particle size of 3 ⁇ m and a specific gravity. 2.5 conductive particles were prepared.
- conductive particles B Ni particles having an average particle size of 4 ⁇ m and an apparent density of 2.1 g / cm 3 were prepared.
- Example 1 After dissolving 20 parts by mass of phenoxy resin (FX-316 Nippon Steel Chemical), 20 parts by mass of acrylic rubber (ACM), and 60 parts by mass of the latent curing agent "Novacure 3941" in 100 parts by mass of toluene, Table 1 shows. The above conductive particles were added to prepare a coating liquid for forming an adhesive layer.
- This coating liquid is applied to the copper foil shown in Table 1 on one side (the side to which the coating liquid is applied) using a coating device (manufactured by Yasui Seiki Co., Ltd., product name: precision coating machine), and 70
- a coating device manufactured by Yasui Seiki Co., Ltd., product name: precision coating machine
- An adhesive film having a thickness of 18 ⁇ m was prepared on a copper foil by drying with hot air at ° C. for 10 minutes.
- the surface roughness Rz shown in Table 1 indicates the surface roughness on the surface of the copper foil on the adhesive film side.
- Examples 2 to 13, Comparative Examples 1 to 4 An adhesive film was applied onto the copper foil in the same manner as in Example 1 except that the types and number of copies of the conductive particles and the surface roughness and thickness of the copper foil were changed to those shown in Table 1. Made.
- connection resistance As a reference example, a circuit board (PWB) having three copper circuits having a line width of 1000 ⁇ m, a pitch of 10000 ⁇ m, and a thickness of 15 ⁇ m on an epoxy substrate containing a glass cloth with the adhesives with copper foils of Examples 1 to 13 and Comparative Examples 1 to 4. was pasted. This was heated and pressurized at 180 ° C. and 2 MPa for 10 seconds using a thermocompression bonding device (heating method: constant heat type, manufactured by Toray Engineering Co., Ltd.) and connected over a width of 2 mm to prepare a connected body.
- a thermocompression bonding device heating method: constant heat type, manufactured by Toray Engineering Co., Ltd.
- a sample in which a resist was formed on the prepared junction was immersed in an etching solution and shaken.
- the etching solution was adjusted with copper chloride: 100 g / L and hydrochloric acid: 100 ml / L.
- copper chloride 100 g / L
- hydrochloric acid 100 ml / L.
- the resist was peeled off to obtain a desired evaluation sample.
- the resistance value between the remaining copper foil part on the circuit and the copper circuit on the substrate was held in a high temperature and high humidity bath at 85 ° C and 85% RH for 250 hours immediately after bonding (after the test) with a multimeter. It was measured.
- the resistance value is shown by averaging 37 points of resistance between the remaining copper foil portion on the circuit and the copper circuit on the substrate.
- the results of the resistance values are shown in Table 2.
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Abstract
Description
導電性粒子12は、導電性を有する略球形の粒子であり、Au、Ag、Ni、Cu、はんだ等の金属で構成された金属粒子、又は、導電性カーボンで構成された導電性カーボン粒子などから構成されている。導電性粒子12は、非導電性のガラス、セラミック、プラスチック(ポリスチレン等)などを含むコアと、上記金属又は導電性カーボンを含み、コアを被覆する被覆層とを備える被覆導電粒子であってもよい。導電性粒子12は、これらの中でも、熱溶融性の金属で形成された金属粒子、又はプラスチックを含むコアと、金属又は導電性カーボンを含み、コアを被覆する被覆層とを備える被覆導電粒子であってもよい。
接着剤層14を構成する接着剤成分は、硬化剤、モノマー、及びフィルム形成材を含有している。エポキシ樹脂モノマーを用いる場合は、硬化剤として、イミダゾール系、ヒドラジド系、三フッ化ホウ素-アミン錯体、スルホニウム塩、アミンイミド、ポリアミンの塩、ジシアンジアミド等を用いることができる。硬化剤をポリウレタン系、ポリエステル系の高分子物質等で被覆してマイクロカプセル化すると、可使時間が延長されるため、好適である。一方、アクリルモノマーを用いる場合は、硬化剤として、過酸化化合物、アゾ系化合物等の加熱により分解して遊離ラジカルを発生するものを用いることができる。
(測定条件)
装置:東ソー株式会社製 GPC-8020
検出器:東ソー株式会社製 RI-8020
カラム:日立化成株式会社製 Gelpack GLA160S+GLA150S
試料濃度:120mg/3mL
溶媒:テトラヒドロフラン
注入量:60μL
圧力:2.94×106Pa(30kgf/cm2)
流量:1.00mL/min
金属箔層20の一方の表面と反対の表面の表面粗さRzは同等でもいいが、異なる場合でもよい。金属箔層20は、例えば、5μm~200μmの厚みを有している。ここでいう金属箔層の厚みは、表面粗さRzを含む厚さである。金属箔層20は、例えば、銅箔、アルミ箔、ニッケル箔、ステンレス、チタン、又は、白金である。
導電性接着剤層及び絶縁性接着剤層を作製するための各材料を以下の通り準備した。
熱可塑性樹脂として、フェノキシ樹脂(商品名:FX-316、新日鐵化学製)を準備した。
温度計、攪拌装置を備えた重合反応器に、水200部、ラウリル硫酸ナトリウム2部、エチルアクリレート(EA:アルドリッチ社製)29.25質量部、ブチルアクリレート(BA、アルドリッチ社製)39.25質量部、アクリルニトリル(AN、アルドリッチ社製)、グリシジルメタクリレート(GMA、アルドリッチ社製)3質量部を仕込み、減圧脱気及び窒素置換を3度実施して酸素を十分に除去した後、常圧下、30℃で5時間乳化重合した。得られた懸濁重合液を塩化カルシウム水溶液で凝固させた後、水洗し、乾燥させて、アクリルゴムを得た。
潜在性硬化剤として、イミダゾール変性体を核とし、その表面をポリウレタンで被覆してなる平均粒径5μmのマイクロカプセル型硬化剤を、液状ビスフェノールF型エポキシ樹脂中に分散してなるマスターバッチ型潜在性硬化剤(商品名:ノバキュア3941、活性温度125℃、旭化成ケミカルズ製)を準備した。
導電性粒子A1として、ポリスチレンを核とする粒子の表面に厚み0.2μmのニッケル層を設けた後、このニッケル層の外側に厚み0.02μmの金層を設けて、平均粒径5μm、比重2.3の導電性粒子を準備した。
導電性粒子A2として、ポリスチレンを核とする粒子の表面に厚み0.2μmのニッケル層を設けた後、このニッケル層の外側に厚み0.02μmの金層を設けて、平均粒径10μm、比重2.1の導電性粒子を準備した。
導電性粒子A3として、ポリスチレンを核とする粒子の表面に厚み0.2μmのニッケル層を設けた後、このニッケル層の外側に厚み0.02μmの金層を設けて、平均粒径3μm、比重2.5の導電性粒子を準備した。
導電性粒子Bとして、平均粒径4μm、見掛密度2.1g/cm3のNi粒子を準備した。
フェノキシ樹脂(FX-316 新日鐵化学性)20質量部、アクリルゴム(ACM)20質量部、潜在性硬化剤「ノバキュア3941」60質量部を、トルエン100質量部に溶解した後、表1に示す導電性粒子を加え、接着剤層形成用塗布液を調製した。
導電性粒子の種類及び配合部数、並びに、銅箔の表面粗さ及び厚みを表1に記載されるものに変更した以外は、実施例1と同様の方法で、銅箔上に接着剤フィルムを作製した。
参考例として、実施例1~13及び比較例1~4の銅箔付き接着剤をガラスクロス入りエポキシ基板上にライン幅1000μm、ピッチ10000μm、厚み15μmの銅回路を3本有する回路板(PWB)を貼付けた。これを、熱圧着装置(加熱方式:コンスタントヒート型、東レエンジニアリング社製)を用いて、180℃、2MPaで10秒間加熱加圧して幅2mmにわたり接続し、接続体を作製した。
Claims (11)
- 導電性粒子を含む接着剤組成物からなる接着剤層と、
前記接着剤層上に配置される金属箔層と、
を備え、
前記導電性粒子の平均粒径に対する、前記金属箔層の前記接着剤層に接着される側の面の表面粗さRzの比が0.05~3である、配線形成用部材。 - 導電性粒子を含む接着剤組成物からなる接着剤層と、
前記接着剤層上に配置される金属箔層と、
を備え、
前記金属箔層の前記接着剤層に接着される側の面の表面粗さRzが20μmより小さい、配線形成用部材。 - 前記金属箔層の前記表面粗さRzが0.5μm以上10μm以下である、
請求項1又は2に記載の配線形成用部材。 - 前記導電性粒子の平均粒径が2μm以上20μm以下である、
請求項1~3の何れか一項に記載の配線形成用部材。 - 前記金属箔層の前記接着剤層と接している表面から前記導電性粒子の表面までの最短距離が0μmより大きく1μm以下である、
請求項1~4の何れか一項に記載の配線形成用部材。 - 前記接着剤層は、前記導電性粒子が接着剤成分中に含まれる第1接着剤層と、第2接着剤層と、を有し、前記第1接着剤層が前記金属箔層と前記第2接着剤層との間に位置する、
請求項1~5の何れか一項に記載の配線形成用部材。 - 更に、剥離フィルムを備える、
請求項1~6の何れか一項に記載の配線形成用部材。 - 導電性粒子を含む接着剤組成物からなる接着剤層と、金属箔層と、が別体として設けられ、使用時に前記金属箔層に前記接着剤層が接着可能である、配線形成用部材であって、
前記導電性粒子の平均粒径に対する、前記金属箔層の前記接着剤層に接着される側の面の表面粗さRzの比が0.05~3である、配線形成用部材。 - 導電性粒子を含む接着剤組成物からなる接着剤層と、金属箔層と、が別体として設けられ、使用時に前記金属箔層に前記接着剤層が接着可能である、配線形成用部材であって、
前記金属箔層の前記接着剤層に接着される側の面の表面粗さRzが20μmより小さい、配線形成用部材。 - 請求項1~9の何れか一項に記載の配線形成用部材を準備する工程と、
配線が形成されている基材を準備する工程と、
前記配線を覆うように前記基材の配線が形成された面に対して前記配線形成用部材を前記接着剤層が前記基材に対向するように配置する工程と、
前記配線形成用部材を前記基材に対して加熱圧着する工程と、
前記金属箔層に対してパターニング処理を行う工程と、
を備える、配線層の形成方法。 - 配線を有する基材と、
前記配線を覆うように前記基材上に配置される、請求項1~9の何れか一項に記載の配線形成用部材の硬化物と、
を備え、
前記配線と、前記配線形成用部材の前記金属箔又は前記金属箔から形成された別の配線とが電気的に接続されている、配線形成部材。
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| KR1020237006745A KR20230045037A (ko) | 2020-08-07 | 2021-08-06 | 배선 형성용 부재, 배선 형성용 부재를 이용한 배선층의 형성 방법, 및, 배선 형성 부재 |
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| CN202180068697.4A CN116420225A (zh) | 2020-08-07 | 2021-08-06 | 配线形成用部件、使用了配线形成用部件的配线层的形成方法及配线形成部件 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09300632A (ja) * | 1996-05-09 | 1997-11-25 | Ricoh Co Ltd | インクジェット記録装置 |
| JPH1167410A (ja) * | 1997-08-18 | 1999-03-09 | Hitachi Chem Co Ltd | 異方導電性接着フィルムの製造方法 |
| WO2008139994A1 (ja) * | 2007-05-09 | 2008-11-20 | Hitachi Chemical Company, Ltd. | 導電体接続用部材、接続構造及び太陽電池モジュール |
| WO2008139995A1 (ja) * | 2007-05-09 | 2008-11-20 | Hitachi Chemical Company, Ltd. | 導電体の接続方法、導電体接続用部材、接続構造及び太陽電池モジュール |
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| JP2011049612A (ja) | 2006-01-16 | 2011-03-10 | Hitachi Chem Co Ltd | 太陽電池モジュールの製造方法 |
| JP2008235007A (ja) | 2007-03-20 | 2008-10-02 | Sumitomo Electric Ind Ltd | 異方導電シート、異方導電シートで接続された配線板体、配線板接続体および配線板モジュール |
| JP5622137B2 (ja) | 2007-10-29 | 2014-11-12 | デクセリアルズ株式会社 | 電気的接続体及びその製造方法 |
| US8745860B2 (en) | 2011-03-11 | 2014-06-10 | Ibiden Co., Ltd. | Method for manufacturing printed wiring board |
| JP6414652B1 (ja) * | 2016-12-27 | 2018-10-31 | 株式会社村田製作所 | 多層基板および電子機器 |
| KR20190115020A (ko) * | 2017-02-13 | 2019-10-10 | 타츠타 전선 주식회사 | 프린트 배선판 |
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|---|---|---|---|---|
| JPH09300632A (ja) * | 1996-05-09 | 1997-11-25 | Ricoh Co Ltd | インクジェット記録装置 |
| JPH1167410A (ja) * | 1997-08-18 | 1999-03-09 | Hitachi Chem Co Ltd | 異方導電性接着フィルムの製造方法 |
| WO2008139994A1 (ja) * | 2007-05-09 | 2008-11-20 | Hitachi Chemical Company, Ltd. | 導電体接続用部材、接続構造及び太陽電池モジュール |
| WO2008139995A1 (ja) * | 2007-05-09 | 2008-11-20 | Hitachi Chemical Company, Ltd. | 導電体の接続方法、導電体接続用部材、接続構造及び太陽電池モジュール |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024150769A1 (ja) * | 2023-01-10 | 2024-07-18 | 株式会社レゾナック | 配線形成用部材、配線層の形成方法、及び、配線形成部材 |
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| US20230328897A1 (en) | 2023-10-12 |
| JPWO2022030634A1 (ja) | 2022-02-10 |
| KR20230045037A (ko) | 2023-04-04 |
| TW202209949A (zh) | 2022-03-01 |
| JP7771959B2 (ja) | 2025-11-18 |
| TWI898012B (zh) | 2025-09-21 |
| CN116420225A (zh) | 2023-07-11 |
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