WO2022065285A1 - 回路基板用絶縁材料及びその製造方法、並びに金属箔張積層板 - Google Patents
回路基板用絶縁材料及びその製造方法、並びに金属箔張積層板 Download PDFInfo
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- WO2022065285A1 WO2022065285A1 PCT/JP2021/034528 JP2021034528W WO2022065285A1 WO 2022065285 A1 WO2022065285 A1 WO 2022065285A1 JP 2021034528 W JP2021034528 W JP 2021034528W WO 2022065285 A1 WO2022065285 A1 WO 2022065285A1
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- liquid crystal
- crystal polymer
- insulating material
- circuit board
- thermoplastic liquid
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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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4632—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating thermoplastic or uncured resin sheets comprising printed circuits without added adhesive materials between the sheets
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
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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
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
- B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/061—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of metal
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
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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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
- B32B2264/1021—Silica
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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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
-
- 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
- H05K2201/0129—Thermoplastic polymer, e.g. auto-adhesive layer; Shaping of thermoplastic polymer
-
- 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
- H05K2201/0141—Liquid crystal polymer [LCP]
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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
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/0209—Inorganic, non-metallic particles
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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
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0275—Fibers and reinforcement materials
- H05K2201/029—Woven fibrous reinforcement or textile
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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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/06—Lamination
Definitions
- the present invention relates to an insulating material for a circuit board, a method for manufacturing the same, a metal foil-clad laminate, and the like.
- a varnish-impregnated composite material in which a glass cloth is impregnated with a thermosetting resin such as an epoxy resin, an inorganic filler, and a varnish containing a solvent, and then heat-press molded.
- a thermosetting resin such as an epoxy resin, an inorganic filler, and a varnish containing a solvent
- Patent Documents 1 and 2 Japanese Patent Documents 1 and 2.
- this manufacturing method is inferior in productivity due to poor process margin during manufacturing, for example, from the viewpoint of resin flowability during varnish impregnation and curability during hot press molding.
- the thermosetting resin easily absorbs moisture, and its size changes with the moisture absorption, so that the dimensional accuracy (heating dimensional accuracy) of the obtained varnish-impregnated composite material is inferior.
- a liquid crystal polymer (LCP; Liquid Crystal Polymer) is a polymer that exhibits liquid crystal properties in a molten state or a solution state.
- the thermotropic liquid crystal polymer which exhibits liquid crystal properties in a molten state, has excellent properties such as high gas barrier properties, high film strength, high heat resistance, high insulation, low water absorption, and low dielectric properties in the high frequency range. .. Therefore, a film using a liquid crystal polymer is being studied for practical use in gas barrier film material applications, electronic material applications, and electrically insulating material applications.
- liquid crystal polymer film having such properties a liquid crystal polymer film obtained by inflation-molding a thermoplastic liquid crystal polymer which is a copolymer of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid is disclosed (for example,). , Patent Document 3).
- the film using the liquid crystal polymer has a high anisotropy of the molecular orientation in the film surface and a large in-plane anisotropy of the change in heating dimensions.
- a thermoplastic resin selected from among polyethersulfone, polyetherimide, polyamideimide, polyetheretherketone, polyarylate and polyphenylene sulfide.
- the formed biaxially stretched liquid crystal polymer film is disclosed (see, for example, Patent Document 4).
- an insulating material for a circuit board using a liquid crystal polymer a varnish impregnated composite material in which a glass cloth is impregnated with a varnish containing a liquid crystal polymer, an inorganic filler, a solvent and the like and then heat-press molded is known (for example). , Patent Document 5). Further, as an insulating material for a circuit board that does not use a varnish impregnation process, a laminated film in which a liquid crystal polymer film and a glass cloth are thermocompression bonded is known (see, for example, Patent Documents 6 to 7).
- JP-A-2017-052955 Japanese Unexamined Patent Publication No. 2019-199562 Japanese Unexamined Patent Publication No. 2000-263577 Japanese Unexamined Patent Publication No. 2004-175995 Japanese Unexamined Patent Publication No. 2010-10339 Japanese Unexamined Patent Publication No. 09-309150 Japanese Unexamined Patent Publication No. 2005-109042
- Insulation materials for circuit boards using liquid crystal polymers are excellent in high-frequency characteristics and low dielectric properties, so they are flexible printed wiring boards (FPCs) and flexible in the 5th generation mobile communication systems (5G) and millimeter-wave radars that will be developed in the future.
- FPCs flexible printed wiring boards
- 5G 5th generation mobile communication systems
- millimeter-wave radars millimeter-wave radars
- the linear expansion coefficient in the MD direction (Machine Direction; longitudinal direction) and the TD direction (Transverse Direction) of the film is set to 5 by biaxially stretching the blended body of the thermoplastic resin.
- the linear expansion coefficient in the ZD direction (thickness direction) of the film still exceeds 200 ppm / K.
- reduction of the linear expansion coefficient in the ZD direction (thickness direction) of the film is strongly required.
- the biaxially stretched film obtained in Patent Document 4 contains a large amount of a thermoplastic resin such as polyarylate, heat resistance, dielectric properties, tensile strength, etc. are deteriorated, and an insulating material for a circuit board. It is inferior in practicality in the basic performance required for.
- An object of the present invention is an insulating material for a circuit board which is excellent in dielectric properties in a high frequency region, has a small linear expansion coefficient in any of the MD direction, the TD direction, and the ZD direction, is easy to manufacture, and is excellent in productivity, and a method for manufacturing the same. , And to provide a metal foil-clad laminate and the like.
- thermoplastic liquid crystal polymer film contains an inorganic filler
- the laminate is the thermoplastic liquid crystal polymer film and the weave.
- An insulating material for circuit boards which is a dry-type laminated laminate that is heat-bonded to cloth.
- thermoplastic liquid crystal polymer film is a melt-extruded film.
- thermoplastic liquid crystal polymer film is a T-die melt-extruded film.
- thermoplastic liquid crystal polymer film contains the inorganic filler of 1% by mass or more and 45% by mass or less with respect to the total amount of the film. material.
- thermoplastic liquid crystal polymer film containing an inorganic filler a step of preparing a woven fabric of inorganic fibers, and a step of laminating the thermoplastic liquid crystal polymer film and the woven fabric, heating and pressurizing the fabric.
- a method for producing an insulating material for a circuit board comprising a step of forming a dry laminated laminate in which the thermoplastic liquid crystal polymer film and the woven fabric are heat-bonded.
- the step of preparing the thermoplastic liquid crystal polymer film includes a step of preparing a resin composition containing the thermoplastic liquid crystal polymer and the inorganic filler, and a step of molding the resin composition to form the inorganic filler.
- a metal foil covering comprising the insulating material for a circuit board according to any one of (1) to (11) and metal foils provided on one side and / or both sides of the insulating material for a circuit board. Laminated board.
- an insulating material for a circuit board which is excellent in dielectric properties in a high frequency region, has a small linear expansion coefficient in any of the MD direction, the TD direction, and the ZD direction, is easy to manufacture, and is excellent in productivity. It is possible to provide the manufacturing method, a metal foil-clad laminate, and the like. Further, according to one aspect of the present invention, since a high-performance insulating material for a circuit board can be realized without going through a varnish impregnation process, a stable insulating material for a circuit board can be supplied with good reproducibility and low cost. can do.
- FIG. 1 is a schematic cross-sectional view showing a main part of the insulating material 100 for a circuit board of the present embodiment.
- the insulating material 100 for a circuit board of the present embodiment has a laminated structure (three-layer structure) in which a thermoplastic liquid crystal polymer film 11, an inorganic fiber woven fabric 21, and a thermoplastic liquid crystal polymer film 12 are arranged at least in this order. It has a laminate. In this laminate, the thermoplastic liquid crystal polymer film 11 is provided on the surface 21a side of the woven fabric 21, and the thermoplastic liquid crystal polymer film 12 is provided on the surface 21b side of the woven fabric 21, and as will be described later, these are provided.
- thermoplastic liquid crystal polymer films 11 and 12 are thermally pressure-bonded to the woven fabric 21 to form a dry laminated laminate L having a three-layer structure.
- the dry laminated laminate L having a three-layer structure is exemplified in the present embodiment, the present invention has a two-layer structure dry laminated laminate in which either the thermoplastic liquid crystal polymer film 11 or the thermoplastic liquid crystal polymer film 12 is omitted.
- the body L can be a dry laminated laminate L having a laminated structure of four or more layers in which the thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are further laminated.
- thermoplastic liquid crystal polymer films 11 and 12 are directly placed on the surface (for example, surfaces 21a and 21b) of the woven fabric 21 as in the present embodiment.
- An arbitrary layer for example, a primer layer, an adhesive layer, etc.
- a primer layer, an adhesive layer, etc. for example, not shown
- the thermoplastic liquid crystal is not limited to the above-mentioned embodiment. It is meant to include an embodiment in which the polymer films 11 and 12 are arranged apart from the surfaces 21a and 21b of the woven fabric 21.
- thermoplastic liquid crystal polymer films 11 and 12 are formed by molding a thermoplastic liquid crystal polymer into a film.
- film does not include woven fabric and non-woven fabric (hereinafter, these may be collectively referred to as "cloth").
- thermoplastic liquid crystal polymer films 11 and 12 a melt-extruded film such as a T-die melt-extruded film is preferably used.
- a melt-extruded film of a thermoplastic liquid crystal polymer a uniform one is available at a lower cost as compared with a woven fabric or a non-woven fabric made of fibers of the thermoplastic liquid crystal polymer.
- the thicknesses of the thermoplastic liquid crystal polymer films 11 and 12 can be appropriately set according to the requirements and are not particularly limited. Considering the handleability and productivity at the time of melt extrusion, it is preferably 5 ⁇ m or more and 300 ⁇ m or less, more preferably 10 ⁇ m or more and 250 ⁇ m or less, and further preferably 20 ⁇ m or more and 200 ⁇ m or less.
- the thicknesses of the thermoplastic liquid crystal polymer films 11 and 12 may be the same or different.
- thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are thermocompression bonded
- the thick film thin film which cannot be applied by the varnish impregnation process of the prior art
- the thermoplastic liquid crystal polymer films 11 and 12 for example, having a thickness of 200 ⁇ m or more
- thermoplastic liquid crystal polymer used here, those known in the art can be used, and the type thereof is not particularly limited.
- the liquid crystal polymer is a polymer that forms an optically anisotropic molten phase, and examples thereof include thermotropic liquid crystal compounds.
- the properties of the anisotropic molten phase can be confirmed by a known method such as a polarization inspection method using an orthogonal polarizing element. More specifically, the confirmation of the anisotropic molten phase can be carried out by observing the sample placed on the Leitz hot stage at a magnification of 40 times under a nitrogen atmosphere using a Leitz polarizing microscope.
- thermoplastic liquid crystal polymer examples include a single amount of an aromatic or aliphatic dihydroxy compound, an aromatic or aliphatic dicarboxylic acid, an aromatic hydroxycarboxylic acid, an aromatic diamine, an aromatic hydroxyamine, an aromatic aminocarboxylic acid and the like. Examples thereof include those obtained by polycondensing the body, but the present invention is not particularly limited thereto.
- the thermoplastic liquid crystal polymer is preferably a copolymer. Specifically, an aromatic polyamide resin obtained by polycondensing monomers such as aromatic hydroxycarboxylic acid, aromatic diamine, and aromatic hydroxyamine; aromatic diol, aromatic carboxylic acid, aromatic hydroxycarboxylic acid, and the like.
- thermoplastic liquid crystal polymer film 11 and the thermoplastic liquid crystal polymer film 12 may be made of the same type of thermoplastic liquid crystal polymer or may be made of different kinds of thermoplastic liquid crystal polymers.
- aromatic polyester resins having a thermotropic-type liquid crystal-like property and a melting point of 250 ° C. or higher, preferably a melting point of 280 ° C. to 380 ° C. are preferably used.
- an aromatic polyester resin for example, an aromatic polyester resin that is synthesized from a monomer such as an aromatic diol, an aromatic carboxylic acid, or a hydroxycarboxylic acid and exhibits liquidity when melted is known.
- Typical examples are a polycondensate of ethylene terephthalate and parahydroxybenzoic acid, a polycondensate of phenol and phthalic acid with parahydroxybenzoic acid, and 2,6-hydroxynaphthoic acid and parahydroxybenzoic acid. Examples thereof include polycondensates, but the present invention is not particularly limited thereto.
- the aromatic polyester resin one type can be used alone, or two or more types can be used in any combination and ratio.
- 6-hydroxy-2-naphthoic acid and a derivative thereof are used as a basic structure, and parahydroxybenzoic acid, terephthalic acid, isophthalic acid, and the like.
- One or more selected from the group consisting of 6-naphthalenedicarboxylic acid, 4,4'-biphenol, bisphenol A, hydroquinone, 4,4-dihydroxybiphenol, ethylene terephthalate and derivatives thereof is a monomer component (hereinafter, simply " It may be referred to as “monomer component B”), and examples thereof include an aromatic polyester resin having at least.
- linear lines of molecules are regularly arranged in a molten state to form an anisotropic molten phase, which typically exhibits thermotropic type liquid crystal-like properties, and has mechanical properties, electrical properties, and so on. It has excellent basic performance in high frequency characteristics, heat resistance, moisture absorption and the like.
- the above-mentioned preferred embodiment of the aromatic polyester resin can have any configuration as long as it has a monomer component A and a monomer component B as essential units. For example, it may have two or more kinds of monomer components A or may have three or more kinds of monomer components A. Further, the above-mentioned preferred embodiment of the aromatic polyester resin contains other monomer components (hereinafter, may be simply referred to as “monomer component C”) other than the monomer component A and the monomer component B. May be good.
- the above-mentioned preferred embodiment of the aromatic polyester resin is composed of the monomer component A, the monomer component B, and the monomer component C even if the polycondensate is a binary system or more composed of only the monomer component A and the monomer component B. It may be a polycondensate of a ternary or more monomer component.
- Other monomer components include those other than the above-mentioned monomer component A and monomer component B, specifically, aromatic or aliphatic dihydroxy compounds and derivatives thereof; aromatic or aliphatic dicarboxylic acids and derivatives thereof; aromatic hydroxycarboxylic acids.
- the other monomer components one type may be used alone, or two or more types may be used in any combination and ratio.
- the "derivative” is a halogen atom (for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom) and an alkyl group having 1 to 5 carbon atoms (for example, methyl) as a part of the above-mentioned monomer component.
- a halogen atom for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom
- an alkyl group having 1 to 5 carbon atoms for example, methyl
- the "derivative” may be an ester-forming monomer such as an acylated product, an ester derivative, or an acid halide of the monomer components A and B which may have the above-mentioned modifying group.
- thermoplastic liquid crystal polymer using these can be obtained at the time of thermocompression bonding to an adherend. It has excellent moldability.
- the melting point of the aromatic polyester resin is lowered to improve the molding processability of the thermoplastic liquid crystal polymer films 11 and 12 at the time of heat-bonding to the adherend, or the thermoplastic liquid crystal polymer films 11 and 12 are heat-bonded to the metal foil.
- the content ratio of the monomer component A to the aromatic polyester resin in terms of molar ratio is preferably 10 mol% or more and 70 mol% or less, and more preferably 10 mol% or more and 50 mol% or less.
- it is more preferably 10 mol% or more and 40 mol% or less, and more preferably 15 mol% or more and 30 mol% or less.
- the content ratio of the monomer component B to the aromatic polyester resin in terms of molar ratio is preferably 30 mol% or more and 90 mol% or less, more preferably 50 mol% or more and 90 mol% or less, and 60 mol% or more and 90 mol% or less. The following is more preferable, and 70 mol% or more and 85 mol% or less are more preferable.
- the content ratio of the monomer component C that may be contained in the aromatic polyester resin is preferably 10% by mass or less, more preferably 8% by mass or less, still more preferably 5% by mass or less, preferably 5% by mass or less in terms of molar ratio. It is 3% by mass or less.
- a known method can be applied to the method for synthesizing the aromatic polyester resin, and the method is not particularly limited.
- a known polycondensation method for forming an ester bond with the above-mentioned monomer components for example, a melt polymerization method, a melt acidlysis method, a slurry polymerization method, or the like can be applied.
- an acylation or acetylation step may be performed according to a conventional method.
- thermoplastic liquid crystal polymer films 11 and 12 further contain an inorganic filler.
- the thermoplastic liquid crystal polymer films 11 and 12 having a reduced coefficient of linear expansion can be realized, and in particular, in the present embodiment, the coefficient of linear expansion in the ZD direction (thickness direction) is effectively reduced. Therefore, it is particularly useful for rigid substrate applications where multi-layer lamination is required, for example.
- inorganic filler those known in the art can be used, and the type thereof is not particularly limited.
- silica eg natural silica, molten silica, amorphous silica, hollow silica, wet silica, synthetic silica, aerodil, etc.
- aluminum compounds eg boehmite, aluminum hydroxide, alumina, etc.
- Hydrotalcite aluminum borate, aluminum nitride, etc.
- magnesium compounds eg, magnesium aluminometasilicate, magnesium carbonate, magnesium oxide, magnesium hydroxide, etc.
- calcium compounds eg, calcium carbonate, calcium hydroxide, calcium sulfate, etc.
- molybdenum compounds eg, molybdenum oxide, zinc molybdate, etc.
- talc eg, natural talc,
- thermoplastic liquid crystal polymer film 11 and the thermoplastic liquid crystal polymer film 12 may contain the same kind of inorganic fillers, or may contain different kinds of inorganic fillers.
- the inorganic filler used here may be one that has been subjected to a surface treatment known in the art.
- the surface treatment can improve moisture resistance, adhesive strength, dispersibility and the like.
- the surface treatment agent include, but are not limited to, a silane coupling agent, a titanate coupling agent, a sulfonic acid ester, a carboxylic acid ester, and a phosphoric acid ester.
- the median diameter (d50) of the inorganic filler can be appropriately set according to the required performance and is not particularly limited.
- the d50 of the inorganic filler is preferably 0.01 ⁇ m or more and 50 ⁇ m or less, more preferably 0.03 ⁇ m or more and 50 ⁇ m or less, and further preferably 0. It is 1 ⁇ m or more and 50 ⁇ m or less.
- the inorganic fillers contained in the thermoplastic liquid crystal polymer films 11 and 12 may have the same d50 or different d50s.
- the content of the inorganic filler can be appropriately set according to the required performance in consideration of the blending balance with other essential components and optional components, and is not particularly limited.
- the content of the inorganic filler is 1% by mass or more in total in terms of solid content with respect to the total amount of the thermoplastic liquid crystal polymer films 11 and 12. It is preferably 3% by mass or less, more preferably 3% by mass or more and 40% by mass or less in total, and further preferably 5% by mass or more and 35% by mass or less in total.
- the filling ratio of the inorganic filler can be kept relatively small, and as a result, the content ratio of the thermoplastic liquid crystal polymer can be maintained relatively high, so that the high frequency region can be obtained. It is possible to maintain a high dielectric property in.
- thermoplastic liquid crystal polymer films 11 and 12 may contain resin components other than the above-mentioned thermoplastic liquid crystal polymer, such as a thermosetting resin and a thermoplastic resin, as long as the effects of the present invention are not excessively impaired. .. Further, the thermoplastic liquid crystal polymer films 11 and 12 are additives known in the art, for example, higher fatty acids having 10 to 25 carbon atoms, higher fatty acid esters, higher fatty acid amides, as long as the effects of the present invention are not excessively impaired.
- Defoaming improver such as higher fatty acid metal salt, polysiloxane, fluororesin; colorant such as dye, pigment; organic filler; antioxidant; heat stabilizer; light stabilizer; ultraviolet absorber; flame retardant; antistatic Agents; surfactants; rust preventives; antifoaming agents; fluorescent agents and the like may be contained.
- Each of these additives may be used alone or in combination of two or more.
- These additives can be included in the molten resin composition prepared at the time of film formation of the thermoplastic liquid crystal polymer films 11 and 12.
- the contents of these resin components and additives are not particularly limited, but are 0.01 to 10% by mass, respectively, with respect to the total amount of the thermoplastic liquid crystal polymer films 11 and 12 from the viewpoint of moldability and thermal stability. Is preferable, and more preferably 0.1 to 7% by mass, respectively, and even more preferably 0.5 to 5% by mass, respectively.
- the inorganic fiber woven cloth 21 is a cloth woven with inorganic fibers.
- the inorganic fiber include glass fibers such as E glass, D glass, L glass, M glass, S glass, T glass, Q glass, UN glass, NE glass and spherical glass, and inorganic fibers other than glass such as quartz.
- glass fibers such as E glass, D glass, L glass, M glass, S glass, T glass, Q glass, UN glass, NE glass and spherical glass
- inorganic fibers other than glass such as quartz.
- examples thereof include ceramic fibers such as silica, but the present invention is not particularly limited thereto.
- a woven fabric that has been subjected to a fiber opening treatment or a filling treatment is suitable from the viewpoint of dimensional stability.
- glass cloth is preferable from the viewpoint of mechanical strength, dimensional stability, water absorption and the like.
- glass cloth that has been subjected to fiber opening treatment or filling treatment is preferable.
- a glass cloth surface-treated with a silane coupling agent such as epoxy silane treatment or amino silane treatment can also be preferably used.
- the woven fabric 21 may be used alone or in combination of two or more.
- the thickness of the woven fabric 21 can be appropriately set according to the required performance and is not particularly limited. From the viewpoint of stackability, processability, mechanical strength, etc., it is preferably 10 to 300 ⁇ m, more preferably 10 to 200 ⁇ m, and even more preferably 15 to 180 ⁇ m.
- the total thickness of the insulating material 100 for circuit boards can be appropriately set according to the required performance, and is not particularly limited. From the viewpoint of stackability, processability, mechanical strength, etc., it is preferably 30 to 500 ⁇ m, more preferably 50 to 400 ⁇ m, still more preferably 70 to 300 ⁇ m, and particularly preferably 90 to 250 ⁇ m.
- the insulating material 100 for a circuit board of the present embodiment has a dielectric property in a high frequency region even though the linear expansion coefficient is small in all of the MD direction, the TD direction, and the ZD direction. It has a remarkable effect of being excellent in manufacturing, easy to manufacture, and excellent in productivity.
- the average coefficient of linear expansion (CTE, ⁇ 2, 23 to 200 ° C.) in the MD direction of the insulating material 100 for a circuit board of the present embodiment is not particularly limited, but is 5 ppm / K or more from the viewpoint of improving the adhesion to the metal foil. It is preferably 25 ppm / K or less, more preferably 7 ppm / K or more and 24 ppm / K or less, and further preferably 9 ppm / K or more and 23 ppm / K or less.
- the average coefficient of linear expansion (CTE, ⁇ 2,23 to 200 ° C.) in the TD direction is preferably 5 ppm / K or more and 25 ppm / K or less, more preferably 7 ppm / K or more and 24 ppm / K or less, still more preferably. Is 9 ppm / K or more and 23 ppm / K or less.
- the average coefficient of linear expansion (CTE, ⁇ 2,23 to 200 ° C.) in the ZD direction is preferably 10 ppm / K or more and 100 ppm / K or less, more preferably 15 ppm / K or more and 98 ppm / K or less, and further preferably.
- the coefficient of linear expansion is measured by the TMA method based on JIS K7197, and the average coefficient of linear expansion means the average value of the coefficient of linear expansion at 23 to 200 ° C. measured by the same method. ..
- the coefficient of linear expansion measured here is the measured environment temperature (23 ° C.) after heating (1st heating) the insulating material 100 for a circuit board at a heating rate of 5 ° C./min in order to see the value obtained by eliminating the thermal history. It means the value at the time of cooling to (1st cooling) and then heating (2nd heating) at a heating rate of 5 ° C./min for the second time.
- other detailed measurement conditions shall be in accordance with the conditions described in Examples described later.
- the dielectric property of the insulating material 100 for a circuit board of the present embodiment can be appropriately set according to the desired performance and is not particularly limited.
- the relative permittivity ⁇ r (36 GHz) is preferably 3.0 or more and 3.7 or less, and more preferably 3.0 to 3.5.
- the dielectric loss tangent tan ⁇ (36 GHz) is preferably 0.0010 or more and 0.0050 or less, and more preferably 0.0010 or more and 0.0045 or less.
- the relative permittivity ⁇ r and the dielectric loss tangent tan ⁇ mean the values at 36 GHz measured by the cavity resonator contact method according to JIS K6471.
- other detailed measurement conditions shall be in accordance with the conditions described in Examples described later.
- FIG. 2 is a flowchart showing an example of a method for manufacturing the insulating material 100 for a circuit board according to the present embodiment.
- This manufacturing method includes a step of preparing the above-mentioned thermoplastic liquid crystal polymer films 11 and 12 containing an inorganic filler (S1), a step of preparing an inorganic fiber woven fabric 21 (S2), and a thermoplastic liquid crystal polymer film 11. , 12 and the woven fabric 21 are laminated, heated and pressed to form a dry laminated laminate L in which the thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are thermally pressure-bonded (S3). Have at least.
- thermoplastic liquid crystal polymer films 11 and 12 containing an inorganic filler are prepared.
- a commercially available product can be used, and it can be produced by a method known in the art.
- a resin composition containing the above-mentioned thermoplastic liquid crystal polymer and an inorganic filler is prepared (S1a), the resin composition is formed into a film (S1b), and the thermoplastic contains the inorganic filler. Examples thereof include a method of obtaining liquid crystal polymer films 11 and 12.
- the preparation of the resin composition may be carried out according to a conventional method, and is not particularly limited.
- Each of the above-mentioned components can be manufactured and processed by a known method such as kneading, melt kneading, granulation, extrusion molding, pressing or injection molding.
- a kneading device such as a generally used uniaxial or biaxial extruder or various kneaders can be used.
- a liquid crystal polymer, other resin components, inorganic fillers, additives and the like may be dry-blended in advance using a mixing device such as a tumbler or a Henschel mixer.
- the cylinder set temperature of the kneading device may be appropriately set and is not particularly limited, but is generally preferably in the range of the melting point of the liquid crystal polymer or higher and 360 ° C. or lower, and more preferably the melting point of the liquid crystal polymer + 10 ° C. or higher and 360 ° C. or higher. It is below ° C.
- Additives known in the art for example, higher fatty acids having 10 to 25 carbon atoms, higher fatty acid esters, higher fatty acid amides, higher fatty acid metal salts, etc., as long as the effects of the present invention are not excessively impaired during the preparation of the resin composition.
- Demolding improvers such as polysiloxanes and fluororesins; colorants such as dyes and pigments; organic fillers; antioxidants; heat stabilizers; light stabilizers; ultraviolet absorbers; flame retardants; antistatic agents; surfactants It may contain a rust preventive agent, a defoaming agent, a fluorescent agent and the like.
- Each of these additives may be used alone or in combination of two or more.
- the content of the additive is not particularly limited, but is preferably 0.01 to 10% by mass, more preferably 0, based on the total amount of the resin composition in terms of solid content, from the viewpoint of moldability and thermal stability. .1 to 7% by mass, more preferably 0.5 to 5% by mass.
- thermoplastic liquid crystal polymer films 11 and 12 The method for forming the thermoplastic liquid crystal polymer films 11 and 12 is not particularly limited, but the melt extrusion method is preferably used.
- the above-mentioned resin composition is extruded into a film from the T die by a melt extrusion film forming method using a T die (hereinafter, may be simply referred to as “T die melt extrusion”).
- T die melt extrusion examples thereof include a method of forming a film and then, if necessary, pressure-heating the T-die melt-extruded film to obtain predetermined thermoplastic liquid crystal polymer films 11 and 12.
- the setting conditions for melt extrusion may be appropriately set according to the type and composition of the resin composition to be used, the desired performance of the target melt extrusion film, and the like, and are not particularly limited.
- the set temperature of the cylinder of the extruder is preferably 230 to 360 ° C, more preferably 280 to 350 ° C.
- the slit gap of the T-die may be appropriately set according to the type and composition of the resin composition to be used, the desired performance of the target melt-extruded film, and the like, and is not particularly limited, but is generally limited. It is preferably 0.1 to 1.5 mm, more preferably 0.1 to 0.5 mm.
- the thickness of the obtained melt-extruded film can be appropriately set according to the requirements and is not particularly limited. Considering the handleability and productivity at the time of T-die melt extrusion molding, it is preferably 10 ⁇ m or more and 500 ⁇ m or less, more preferably 20 ⁇ m or more and 300 ⁇ m or less, and further preferably 30 ⁇ m or more and 250 ⁇ m or less.
- the melting point (melting temperature) of the melt-extruded film is not particularly limited, but from the viewpoint of heat resistance and processability of the film, the melting point (melting temperature) is preferably 200 to 400 ° C., particularly heat to the metal foil. From the viewpoint of enhancing the pressure-bonding property, the temperature is preferably 250 to 360 ° C, more preferably 260 to 355 ° C, still more preferably 270 to 350 ° C, and particularly preferably 275 to 345 ° C.
- the melting point of the melt-extruded film is a DSC8500 (manufactured by PerkinElmer), and the melt-extruded film is heated at 20 ° C./min in a temperature interval of 30 to 400 ° C.
- the linear expansion coefficient (CTE, ⁇ 2) in the MD direction (Machine Direction; longitudinal direction) is typically -40 to 40 ppm / K, and the TD direction (Transverse) is typical. Direction; It is easy to obtain a T-die melt-extruded film having a linear expansion coefficient (CTE, ⁇ 2) in the lateral direction of 50 to 120 ppm / K.
- Such physical properties can be obtained in the MD direction during T-die melt-extrusion molding. This is because the main chain of the liquid crystal polymer tends to be easily oriented and the melt phase for anisotropy of the liquid crystal polymer is present at the time of T-die melt extrusion molding.
- step S1 a T-die melt-extruded film having a high degree of orientation (high anisotropy) is easily formed. Even the T-die melt-extruded film having such a high degree of orientation can be used as it is as the thermoplastic liquid crystal polymer films 11 and 12 because the orientation (anisity) is relaxed at the time of thermocompression bonding described later. However, the orientation (anisity) can be reduced by further performing a pressurizing and heating step as needed.
- the heat and pressure treatment may be performed by a method known in the art, for example, a contact type heat treatment, a non-contact heat treatment, or the like, and the type thereof is not particularly limited.
- heat can be set using known equipment such as a non-contact heater, an oven, a blow device, a heat roll, a cooling roll, a heat press machine, and a double belt heat press machine.
- a release film or a porous film known in the art can be arranged on the surface of the T-die melt-extruded film to perform heat treatment.
- a release film or a porous film is arranged on the front and back of the T-die melt-extruded film, and the film is thermocompression-bonded while being sandwiched between the endless belt pairs of the double belt press machine. Then, a thermocompression bonding method for removing the release film or the porous film is preferably used.
- the thermal pressure molding method may be performed with reference to, for example, Japanese Patent Application Laid-Open No. 2010-2216994.
- the processing temperature when hot-press forming a T-die melt-pressed film using the above resin composition between endless belt pairs of a double-belt press machine is a liquid crystal to control the crystal state of the T-die melt-pressed film.
- the temperature is preferably higher than the melting point of the polymer and 70 ° C. higher than the melting point, more preferably + 5 ° C. higher than the melting point, 60 ° C. higher than the melting point, and more preferably + 10 ° C. higher than the melting point.
- the temperature is 50 ° C. higher than the melting point.
- the thermocompression bonding conditions at this time can be appropriately set according to the desired performance, and are not particularly limited, but are preferably performed under the conditions of a surface pressure of 0.5 to 10 MPa and a heating temperature of 250 to 430 ° C., more preferably.
- a non-contact heater or an oven it is preferable to carry out the operation at 200 to 320 ° C. for 1 to 20 hours, for example.
- the thicknesses of the thermoplastic liquid crystal polymer films 11 and 12 prepared in step S1 can be appropriately set according to the requirements and are not particularly limited. Considering the handleability and productivity during the pressure heat treatment, it is preferably 5 ⁇ m or more and 300 ⁇ m or less, more preferably 10 ⁇ m or more and 250 ⁇ m or less, and further preferably 20 ⁇ m or more and 200 ⁇ m or less.
- the thicknesses of the thermoplastic liquid crystal polymer films 11 and 12 may be the same or different.
- thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are thermocompression bonded
- the thick film thin film which cannot be applied by the varnish impregnation process of the prior art
- the thermoplastic liquid crystal polymer films 11 and 12 for example, having a thickness of 200 ⁇ m or more
- the melting point (melting temperature) of the thermoplastic liquid crystal polymer films 11 and 12 prepared in step S1 is not particularly limited, but the melting point (melting temperature) is 200 to 400 ° C. from the viewpoint of heat resistance and processability of the film. It is preferably 250 to 360 ° C., more preferably 260 to 355 ° C., still more preferably 270 to 350 ° C., and particularly preferably 275 to 345 ° C. from the viewpoint of enhancing the thermal pressure bonding property to the metal foil.
- the melting points of the thermoplastic liquid crystal polymer films 11 and 12 mean values measured under the same measurement conditions as the melting point of the melting point of the melt-extruded film.
- step S2 the woven fabric 21 of inorganic fibers is prepared.
- the woven fabric 21 a commercially available product can be used, and the woven fabric 21 can be manufactured by a method known in the art. It should be noted that this step S2 may be performed prior to the step S1, may be performed at the same time, or may be performed after the step S1.
- step S3 the thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are laminated, heated and pressed, and the thermoplastic liquid crystal polymer films 11 and 12 and the woven fabric 21 are thermocompression bonded to the dry laminated laminate L.
- the process at the time of manufacturing is compared with the varnish impregnation process of the prior art. It has a large margin and excellent productivity, and the degree of freedom in product composition is increased.
- thermoplastic liquid crystal polymer film 11, the woven fabric 21, and the thermoplastic liquid crystal polymer film 12 are laminated in this order to form a laminate, which is laminated using a press machine, a double belt press machine, or the like.
- a press machine a double belt press machine, or the like.
- thermoplastic molding by heating and pressurizing while holding a body.
- the processing temperature at the time of thermocompression bonding can be appropriately set according to the required performance, and is not particularly limited, but is preferably 200 to 400 ° C, more preferably 250 to 360 ° C, and even more preferably 270 to 350 ° C.
- the processing temperature at the time of thermocompression bonding is a value measured by the surface temperature of the thermoplastic liquid crystal polymer films 11 and 21 of the above-mentioned laminated body.
- the pressurizing condition at this time can be appropriately set according to the desired performance, and is not particularly limited, but is, for example, at a surface pressure of 0.5 to 10 MPa for 1 to 240 minutes, more preferably a surface pressure of 0.8 to. It takes 1 to 120 minutes at 8 MPa.
- FIG. 3 is a schematic schematic diagram showing an example of the metal leaf-clad laminate 200 of the present embodiment.
- the metal foil-clad laminate 200 of the present embodiment includes the above-mentioned insulating material 100 for a circuit board (dry laminated laminate L) and the metal foil 31 provided on the surfaces of the insulating material 100 for a circuit board. It is a double-sided metal leaf-covered laminated board provided with 32.
- the double-sided metal foil-clad laminate is shown in the present embodiment, the present invention may also be an embodiment in which the metal foil 31 (metal foil 32) is provided only on one surface of the insulating material 100 for a circuit board. It is feasible.
- the materials of the metal foils 31 and 32 are not particularly limited, and examples thereof include gold, silver, copper, copper alloys, nickel, nickel alloys, aluminum, aluminum alloys, iron, and iron alloys. Among these, copper foil, aluminum foil, stainless steel foil, and alloy foil of copper and aluminum are preferable, and copper foil is more preferable.
- copper foil any one produced by a rolling method, an electrolysis method or the like can be used, but an electrolytic copper foil or a rolled copper foil having a relatively large surface roughness is preferable.
- the thicknesses of the metal foils 31 and 32 can be appropriately set according to the desired performance and are not particularly limited.
- the metal foils 31 and 32 may be subjected to surface treatment such as chemical surface treatment such as pickling, as long as the action and effect of the present invention are not impaired.
- the types and thicknesses of the metal foils 31 and 32 may be the same or different.
- the method of providing the metal foils 31 and 32 on the surface of the insulating material 100 for the circuit board can be performed according to a conventional method, and is not particularly limited.
- a laminate obtained by laminating an insulating material 100 for a circuit board and one or more metal foils 31, 32 is hot-pressed using, for example, a multi-stage press machine, a multi-stage vacuum press machine, a continuous molding machine, an autoclave molding machine, or the like. Therefore, the metal foil-clad laminate 200 can also be obtained.
- the insulating material 100 for the circuit board and the metal foils 31 and 32 are laminated to form a laminated body in which the metal foils 31 and 32 are placed on the insulating material 100 for the circuit board.
- An example is a method of hot pressure forming while sandwiching a body between endless belt pairs of a double belt press machine.
- the anisotropy of the linear expansion coefficient in the MD direction and the TD direction is sufficiently reduced, so that high peel strength to the metal foils 31 and 32 can be obtained. can get.
- the coefficient of linear expansion in the ZD direction is sufficiently reduced, it is particularly useful in applications such as rigid substrates where multi-layer lamination is required.
- the temperature at the time of thermal pressure bonding of the metal foils 31 and 32 can be appropriately set according to the required performance, and is not particularly limited, but the temperature is 50 ° C. lower than the melting point of the liquid crystal polymer and 50 ° C. higher than the melting point. It is preferable that the temperature is 40 ° C. lower than the melting point and 40 ° C. higher than the melting point, more preferably 30 ° C. lower than the melting point and 30 ° C. higher than the melting point, and 20 ° C. lower than the melting point. It is particularly preferable that the temperature is 20 ° C. higher than the melting point.
- the temperature at the time of thermocompression bonding of the metal foils 31 and 32 is a value measured by the surface temperature of the above-mentioned insulating material 100 for a circuit board.
- the crimping conditions at this time can be appropriately set according to the desired performance and are not particularly limited. For example, when a double belt press machine is used, the surface pressure is 0.5 to 10 MPa and the heating temperature is 200 to 360 ° C. It is preferable to carry out under the conditions.
- the metal foil-clad laminate 200 of the present embodiment has another laminated structure or a further laminated structure as long as it includes a thermocompression bonding body having a two-layer structure of the insulating material 100 for a circuit board and the metal foils 31 and 32. May be good.
- the peel strength between the insulating material 100 for the circuit board and the metal foils 31 and 32 is not particularly limited, but is 1.0 (N) from the viewpoint of providing higher peel strength. / Mm) or more, more preferably 1.1 (N / mm) or more, still more preferably 1.2 (N / mm) or more.
- the metal foil-clad laminate 200 of the present embodiment can realize higher peel strength than the conventional technique. Therefore, for example, in the heating process of substrate manufacturing, the insulating material 100 for a circuit board and the metal foils 31 and 32 are used. Can suppress the peeling of. In addition, since manufacturing conditions with excellent process margin and productivity can be applied to obtain the same peel strength as the conventional technology, the basic performance of the liquid crystal polymer deteriorates while maintaining the same level of peel strength as the conventional technology. Can be suppressed.
- the metal foil-clad laminate 200 of the present embodiment can be used as a material for a circuit board such as an electronic circuit board or a multilayer board by pattern-etching at least a part of the metal foils 31 and 32. Further, the metal foil-clad laminate 200 of the present embodiment has excellent dielectric properties in the high frequency region, has a small linear expansion coefficient in any of the MD direction, the TD direction, and the ZD direction, has excellent dimensional stability, and is easy to manufacture. Because of its excellent productivity, it is a particularly useful material as an insulating material for flexible printed wiring boards (FPCs) in fifth-generation mobile communication systems (5G), millimeter-wave radars, and the like.
- FPCs flexible printed wiring boards
- the present invention is not limited thereto. That is, the materials, amounts used, ratios, treatment contents, treatment procedures, etc. shown in the following examples can be appropriately changed as long as they do not deviate from the gist of the present invention. Further, the values of various manufacturing conditions and evaluation results in the following examples have meanings as a preferable upper limit value or a preferable lower limit value in the embodiment of the present invention, and the preferable numerical range is the above-mentioned upper limit value or the lower limit value. It may be in the range specified by the combination of the value and the value of the following examples or the values of the examples.
- Example 1 In a reaction vessel equipped with a synthetic stirrer for liquid crystal polymer and a vacuum distillation apparatus, p-hydroxyacetic anhydride (74 mol%) and 6-hydroxy-2-naphthoic acid (26 mol%) were added to 1.025 based on the total amount of monomers. A double molar amount of acetic anhydride was charged, the temperature of the reaction vessel was raised to 150 ° C. under a nitrogen atmosphere, and the temperature was maintained for 30 minutes. , An acetylation reaction product was obtained. The obtained acetylation reaction product was heated to 320 ° C. over 3.5 hours, then reduced to 2.7 kPa over about 30 minutes for melt polycondensation, and then gradually reduced to normal pressure.
- the liquid polymer solid substance was obtained.
- the obtained liquid crystal polymer solid is pulverized and granulated at 300 ° C. using a twin-screw extruder to form an aromatic polyester liquid crystal polymer (PEs-) composed of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid.
- PEs- aromatic polyester liquid crystal polymer
- LCP, molar ratio 74:26 pellets were obtained.
- the resin composition (pellet) of Example 1 was obtained by mixing, reacting, and granulating at 300 ° C.
- Example 1 having a melting point of 280 ° C. and a thickness of 50 ⁇ m by forming a film at 300 ° C. by the T die casting method using the obtained pellets of the resin composition of Example 1. A thermoplastic liquid crystal polymer film was obtained.
- Examples 2 to 13 The same as in Example 1 except that the type and content ratio of the inorganic filler used, the type and thickness of the woven fabric of the inorganic fiber used, the thickness of the insulating material for the circuit board, etc. are changed as shown in Table 1. This was carried out to obtain insulating materials for circuit boards of Examples 2 to 13, respectively.
- Comparative Example 1 Except for omitting the compounding of molten silica, the same procedure as in Example 1 was carried out to obtain an insulating material for a circuit board of Comparative Example 1.
- Comparative Example 2 The same procedure as in Example 1 was performed except that the sandwiching of the glass cloth was omitted, to obtain an insulating material for a circuit board of Comparative Example 2.
- Example 3 The same procedure as in Example 1 was carried out except that the compounding of molten silica and the sandwiching of the glass cloth were omitted, to obtain an insulating material for a circuit board of Comparative Example 3.
- Measuring method Laser diffraction / scattering method
- Measuring equipment LA-500 (manufactured by HORIBA, Ltd.)
- Measurement sample Inorganic filler dispersed in water by ultrasonic waves
- Calculation method Create the particle size distribution of the inorganic filler on a volume basis. The median diameter (d50) was calculated.
- Measurement method Cylindrical cavity resonator method Measurement environment: Temperature 23 ° C Relative humidity 50% Measurement conditions: Sample size 15 mm x 15 mm x thickness 200 ⁇ m Cavity 36GHz
- the insulating material for circuit boards of the present invention can be widely and effectively used in applications such as electronic circuit boards, multilayer boards, high heat dissipation boards, flexible printed wiring boards, antenna boards, optoelectronic mixed circuit boards, and IC packages. Since it is excellent in high frequency characteristics and low dielectric property, it can be widely and effectively used as an insulating material for a flexible printed wiring board (FPC) in a fifth generation mobile communication system (5G), a millimeter wave radar, or the like.
- FPC flexible printed wiring board
- 5G fifth generation mobile communication system
- millimeter wave radar or the like.
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Abstract
Description
(1)熱可塑性液晶ポリマーフィルムと無機繊維の織布とを有する積層体を備え、前記熱可塑性液晶ポリマーフィルムが、無機フィラーを含有し、前記積層体が、前記熱可塑性液晶ポリマーフィルムと前記織布とが熱圧着された乾式ラミネート積層体である、回路基板用絶縁材料。
(3)前記熱可塑性液晶ポリマーフィルムが、Tダイ溶融押出フィルムである(1)又は(2)に記載の回路基板用絶縁材料。
(5)前記無機フィラーは、0.01μm以上50μm以下のメディアン径(d50)を有する(1)~(4)のいずれか一項に記載の回路基板用絶縁材料。
(6)前記熱可塑性液晶ポリマーフィルムが、フィルム総量に対して1質量%以上45質量%以下の前記無機フィラーを含有する(1)~(5)のいずれか一項に記載の回路基板用絶縁材料。
(8)前記無機繊維の前記織布が、ガラスクロスである(1)~(7)のいずれか一項に記載の回路基板用絶縁材料。
(10)JIS K6471に準拠した空洞共振器接動法によって測定される36GHzにおける比誘電率εrが、3.0以上3.7以下である(1)~(9)のいずれか一項に記載の回路基板用絶縁材料。
(11)JIS K6471に準拠した空洞共振器接動法によって測定される36GHzにおける誘電正接tanδが、0.0010以上0.0050以下である(1)~(10)のいずれか一項に記載の回路基板用絶縁材料。
図1は、本実施形態の回路基板用絶縁材料100の要部を示す模式断面図である。本実施形態の回路基板用絶縁材料100は、熱可塑性液晶ポリマーフィルム11、無機繊維の織布21、及び熱可塑性液晶ポリマーフィルム12が、少なくともこの順に配列された積層構造(3層構造)を有する積層体を備えている。この積層体において、熱可塑性液晶ポリマーフィルム11は、織布21の面21a側に設けられ、熱可塑性液晶ポリマーフィルム12は、織布21の面21b側に設けられており、後述するとおり、これら熱可塑性液晶ポリマーフィルム11,12は織布21と熱圧着され、これにより、3層構造の乾式ラミネート積層体Lが形成されている。なお、本実施形態では3層構造の乾式ラミネート積層体Lを例示するが、本発明は、熱可塑性液晶ポリマーフィルム11又は熱可塑性液晶ポリマーフィルム12のいずれかを省略した2層構造の乾式ラミネート積層体Lであっても、熱可塑性液晶ポリマーフィルム11,12や織布21をさらに積層させた4層以上の積層構造の乾式ラミネート積層体Lであっても実施可能なことは言うまでもない。
図2は、本実施形態の回路基板用絶縁材料100の製造方法の一例を示すフローチャートである。この製造方法は、無機フィラーを含有する上述した熱可塑性液晶ポリマーフィルム11,12を準備する工程(S1)と、無機繊維の織布21を準備する工程(S2)と、熱可塑性液晶ポリマーフィルム11,12と織布21とを積層し、加熱及び加圧して、熱可塑性液晶ポリマーフィルム11,12と織布21とが熱圧着された乾式ラミネート積層体Lを形成する工程(S3)と、を少なくとも有する。
図3は、本実施形態の金属箔張積層板200の一例を示す概略模式図である。本実施形態の金属箔張積層板体200は、上述した回路基板用絶縁材料100(乾式ラミネート積層体L)と、この回路基板用絶縁材料100の双方の表面上に設けられた金属箔31,32を備える両面金属箔張積層板である。なお、本実施形態においては、両面金属箔張積層板を示したが、回路基板用絶縁材料100の一方の表面のみに金属箔31(金属箔32)が設けられた態様としても、本発明は実施可能である。
液晶ポリマーの合成
撹拌機及び減圧蒸留装置を備える反応槽にp-ヒドロキシ安息香酸(74モル%)と、6-ヒドロキシ-2-ナフトエ酸(26モル%)と、全モノマー量に対し1.025倍モルの無水酢酸を仕込み、窒素雰囲気下で150℃まで反応槽を昇温し、30分保持した後、副生する酢酸を留去させつつ190℃まですみやかに昇温し、1時間保持し、アセチル化反応物を得た。得られたアセチル化反応物を320℃まで3.5時間かけて昇温した後、約30分かけて2.7kPaにまで減圧して溶融重縮合を行ったのち、徐々に減圧して常圧に戻し、液晶ポリマー固形物を得た。得られた液晶ポリマー固形物を粉砕し二軸押出機を用いて300℃で造粒して、p-ヒドロキシ安息香酸と6-ヒドロキシ-2-ナフトエ酸からなる芳香族ポリエステル系液晶ポリマー(PEs-LCP、モル比74:26)のペレットを得た。
得られた液晶ポリマーのペレット80質量部と溶融シリカ(商品名:デンカ溶融シリカFB-5D、デンカ(株)製)20質量部とをそれぞれ供給し、二軸押出機を用いて300℃で混合・反応・造粒することで、実施例1の樹脂組成物(ペレット)を得た。
得られた実施例1の樹脂組成物のペレットを用いて、Tダイキャスティング法で300℃にて製膜することで、融点280℃及び厚さ50μmを有する実施例1の熱可塑性液晶ポリマーフィルムを得た。
得られた一対の実施例1の熱可塑性液晶ポリマーフィルム間にガラスクロス(IPC No.#1037)を挟み込んだ状態で、熱プレス機を用いて300℃で5分間の熱圧着処理を行うことで、融点280℃及び層厚み100μmを有する実施例1の回路基板用絶縁材料を得た。
使用する無機フィラーの種類や含有割合、使用する無機繊維の織布の種類や厚み、回路基板用絶縁材料の厚み等を、表1に記載のとおりに変更する以外は、実施例1と同様に行い、実施例2~13の回路基板用絶縁材料をそれぞれ得た。
溶融シリカの配合を省略する以外は、実施例1と同様に行い、比較例1の回路基板用絶縁材料を得た。
ガラスクロスの挟み込みを省略する以外は、実施例1と同様に行い、比較例2の回路基板用絶縁材料を得た。
溶融シリカの配合とガラスクロスの挟み込みを省略する以外は、実施例1と同様に行い、比較例3の回路基板用絶縁材料を得た。
実施例1~13及び比較例1~3の回路基板用絶縁材料の性能評価を行った。結果を表1に示す。なお、測定条件は、それぞれ以下のとおりである。
測定方法 : レーザー回折・散乱法
測定機器 : LA-500(堀場製作所社製)
測定サンプル: 無機フィラーを超音波により水中に分散させたもの
算出方法 : 無機フィラーの粒度分布を体積基準で作成し、
メディアン径(d50)を算出した。
測定機器: TMA 4000SE(NETZSCH社製)
測定方法: 引張モード
測定条件: サンプルサイズ 20mm×4mm×厚み50μm
温度区間 23~200℃(2ndRUN)
昇温速度 5℃/min
雰囲気 窒素(流量50ml/min)
試験荷重 5gf
※熱履歴を解消した値をみるため、2ndRUNの値を採用
測定方法: 円筒空洞共振器法
測定環境: 温度23℃相対湿度50%
測定条件: サンプルサイズ 15mm×15mm×厚み200μm
Cavity 36GHz
12 ・・・熱可塑性液晶ポリマーフィルム
21 ・・・無機繊維の織布
21a・・・面
21b・・・面
31 ・・・金属箔
32 ・・・金属箔
100 ・・・回路基板用絶縁材料
200 ・・・金属箔張積層板
L ・・・乾式ラミネート積層体
Claims (14)
- 熱可塑性液晶ポリマーフィルムと無機繊維の織布とを有する積層体を備え、
前記熱可塑性液晶ポリマーフィルムが、無機フィラーを含有し、
前記積層体が、前記熱可塑性液晶ポリマーフィルムと前記織布とが熱圧着された乾式ラミネート積層体である、
回路基板用絶縁材料。 - 前記熱可塑性液晶ポリマーフィルムが、溶融押出フィルムである
請求項1に記載の回路基板用絶縁材料。 - 前記熱可塑性液晶ポリマーフィルムが、Tダイ溶融押出フィルムである
請求項1又は2に記載の回路基板用絶縁材料。 - 前記無機フィラーが、シリカを含む
請求項1~3のいずれか一項に記載の回路基板用絶縁材料。 - 前記無機フィラーは、0.01μm以上50μm以下のメディアン径(d50)を有する
請求項1~4のいずれか一項に記載の回路基板用絶縁材料。 - 前記熱可塑性液晶ポリマーフィルムが、フィルム総量に対して1質量%以上45質量%以下の前記無機フィラーを含有する
請求項1~5のいずれか一項に記載の回路基板用絶縁材料。 - 前記織布が、10μm以上300μm以下の厚みを有する
請求項1~6のいずれか一項に記載の回路基板用絶縁材料。 - 前記無機繊維の前記織布が、ガラスクロスである
請求項1~7のいずれか一項に記載の回路基板用絶縁材料。 - JIS K7197に準拠したTMA法によって測定される23~200℃における平均線膨張係数が、面内方向で5ppm/K以上25ppm/K以下、厚み方向で10ppm/K以上100ppm/K以下である
請求項1~8のいずれか一項に記載の回路基板用絶縁材料。 - JIS K6471に準拠した空洞共振器接動法によって測定される36GHzにおける比誘電率εrが、3.0以上3.7以下である
請求項1~9のいずれか一項に記載の回路基板用絶縁材料。 - JIS K6471に準拠した空洞共振器接動法によって測定される36GHzにおける誘電正接tanδが、0.0010以上0.0050以下である
請求項1~10のいずれか一項に記載の回路基板用絶縁材料。 - 無機フィラーを含有する熱可塑性液晶ポリマーフィルムを準備する工程、
無機繊維の織布を準備する工程、並びに
前記熱可塑性液晶ポリマーフィルムと前記織布とを積層し、加熱及び加圧して、前記熱可塑性液晶ポリマーフィルムと前記織布とが熱圧着された乾式ラミネート積層体を形成する工程を有する、
回路基板用絶縁材料の製造方法。 - 前記熱可塑性液晶ポリマーフィルムを準備する前記工程は、
前記熱可塑性液晶ポリマーと前記無機フィラーとを含有する樹脂組成物を準備する組成物準備工程と、
前記樹脂組成物を成形して、前記無機フィラーを含有する前記熱可塑性液晶ポリマーフィルムを製膜するフィルム製造工程と、を有する
請求項12に記載の回路基板用絶縁材料の製造方法。 - 請求項1~11のいずれか一項に記載の回路基板用絶縁材料と、前記回路基板用絶縁材料の片面及び/又は両面に設けられた金属箔と、を備える
金属箔張積層板。
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| CN202180057795.8A CN116133836A (zh) | 2020-09-23 | 2021-09-21 | 电路基板用绝缘材料及其制造方法、以及覆金属箔层叠板 |
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| KR1020237006298A KR20230074112A (ko) | 2020-09-23 | 2021-09-21 | 회로 기판용 절연 재료 및 그 제조 방법, 그리고 금속박장 적층판 |
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| CN115246999A (zh) * | 2022-08-24 | 2022-10-28 | 上海材料研究所 | 改性热致型液晶聚合物材料、刚性覆铜板及其制备方法 |
| JP2023183587A (ja) * | 2022-06-16 | 2023-12-28 | Tdk株式会社 | 絶縁シート、及び多層基板の製造方法 |
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| CN119676942A (zh) * | 2024-12-26 | 2025-03-21 | 东莞市飞尔姆光电科技有限公司 | 一种热塑型低介电损耗线路板基材及其制备方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09309150A (ja) * | 1996-05-22 | 1997-12-02 | Kuraray Co Ltd | 積層体の製造方法 |
| JP2005109042A (ja) * | 2003-09-29 | 2005-04-21 | Ngk Spark Plug Co Ltd | 配線基板用基材及びその製造方法並びにそれを用いた配線基板 |
| JP2014111699A (ja) * | 2012-12-05 | 2014-06-19 | Primatec Inc | 液晶ポリマーフィルムの製造方法および液晶ポリマーフィルム |
| JP2014237769A (ja) * | 2013-06-07 | 2014-12-18 | 株式会社プライマテック | 高耐熱性液晶ポリマーフィルムとその製造方法 |
| JP2019052288A (ja) * | 2017-09-14 | 2019-04-04 | 佳勝科技股▲ふん▼有限公司 | 液晶ポリマー組成物及び高周波複合基板 |
| JP2019065061A (ja) * | 2017-09-28 | 2019-04-25 | Agc株式会社 | プリント基板用樹脂組成物および製造方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4162321B2 (ja) | 1999-03-18 | 2008-10-08 | 株式会社クラレ | 金属箔積層板の製造方法 |
| JP3896324B2 (ja) | 2002-11-28 | 2007-03-22 | ジャパンゴアテックス株式会社 | 液晶ポリマーブレンドフィルム |
| JP2010103339A (ja) | 2008-10-24 | 2010-05-06 | Sumitomo Chemical Co Ltd | 高周波回路基板 |
| JP2012092214A (ja) * | 2010-10-27 | 2012-05-17 | Sumitomo Chemical Co Ltd | 液晶ポリエステル液状組成物 |
| JP6299834B2 (ja) | 2016-10-05 | 2018-03-28 | 日立化成株式会社 | 低熱膨張性樹脂組成物、プリプレグ、積層板及び配線板 |
| JP2019199562A (ja) | 2018-05-17 | 2019-11-21 | パナソニックIpマネジメント株式会社 | プリプレグ、金属張積層板及びプリント配線板 |
| US20230180384A1 (en) * | 2020-04-03 | 2023-06-08 | Shin-Etsu Polymer Co., Ltd. | Metal-clad laminate |
-
2021
- 2021-09-21 KR KR1020237006298A patent/KR20230074112A/ko not_active Withdrawn
- 2021-09-21 WO PCT/JP2021/034528 patent/WO2022065285A1/ja not_active Ceased
- 2021-09-21 US US18/027,885 patent/US20230371188A1/en not_active Abandoned
- 2021-09-21 JP JP2022551984A patent/JP7753238B2/ja active Active
- 2021-09-21 CN CN202180057795.8A patent/CN116133836A/zh active Pending
- 2021-09-23 TW TW110135256A patent/TWI886339B/zh active
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09309150A (ja) * | 1996-05-22 | 1997-12-02 | Kuraray Co Ltd | 積層体の製造方法 |
| JP2005109042A (ja) * | 2003-09-29 | 2005-04-21 | Ngk Spark Plug Co Ltd | 配線基板用基材及びその製造方法並びにそれを用いた配線基板 |
| JP2014111699A (ja) * | 2012-12-05 | 2014-06-19 | Primatec Inc | 液晶ポリマーフィルムの製造方法および液晶ポリマーフィルム |
| JP2014237769A (ja) * | 2013-06-07 | 2014-12-18 | 株式会社プライマテック | 高耐熱性液晶ポリマーフィルムとその製造方法 |
| JP2019052288A (ja) * | 2017-09-14 | 2019-04-04 | 佳勝科技股▲ふん▼有限公司 | 液晶ポリマー組成物及び高周波複合基板 |
| JP2019065061A (ja) * | 2017-09-28 | 2019-04-25 | Agc株式会社 | プリント基板用樹脂組成物および製造方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023183587A (ja) * | 2022-06-16 | 2023-12-28 | Tdk株式会社 | 絶縁シート、及び多層基板の製造方法 |
| CN115246999A (zh) * | 2022-08-24 | 2022-10-28 | 上海材料研究所 | 改性热致型液晶聚合物材料、刚性覆铜板及其制备方法 |
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| JP7753238B2 (ja) | 2025-10-14 |
| KR20230074112A (ko) | 2023-05-26 |
| TWI886339B (zh) | 2025-06-11 |
| US20230371188A1 (en) | 2023-11-16 |
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