WO2013015577A1 - 열경화성 수지 조성물과 이를 이용한 프리프레그 및 금속박 적층판 - Google Patents
열경화성 수지 조성물과 이를 이용한 프리프레그 및 금속박 적층판 Download PDFInfo
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- WO2013015577A1 WO2013015577A1 PCT/KR2012/005826 KR2012005826W WO2013015577A1 WO 2013015577 A1 WO2013015577 A1 WO 2013015577A1 KR 2012005826 W KR2012005826 W KR 2012005826W WO 2013015577 A1 WO2013015577 A1 WO 2013015577A1
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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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/244—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
-
- 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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08L79/085—Unsaturated polyimide precursors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/14—Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
- H01L23/145—Organic substrates, e.g. plastic
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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
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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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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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
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
Definitions
- the present invention relates to a thermosetting resin composition used in a printed circuit board (PCB) for a semiconductor package, a prepreg and a metal foil laminate using the same.
- PCB printed circuit board
- a double-sided printed circuit board is based on CCL (Copper Clad Laminate) in which copper foil is laminated on both sides of an insulating member. Holes are drilled to connect electrical signals to these copper foils on both sides, and copper foils on both sides are connected to the plated layer using electrolytic copper plating, and then a UV photosensitive dry film is formed to form a circuit. Irradiation with UV selectively forms a pattern. Subsequently, the double-sided printed circuit board is etched by forming a circuit pattern on the double-sided copper foil, and then applying PSR (Photoimagable Solder Resist) for insulation and performing a surface treatment such as gold plating on the surface on which the final component is mounted. Can be prepared.
- CCL Copper Clad Laminate
- PSR Photoimagable Solder Resist
- the multilayer printed circuit board is the same up to the circuit forming step of the double-sided board, and after forming the circuit pattern, the PSR is not applied thereon, but the prepreg and copper foil are laminated one by one, and then heated and pressed. Can be prepared. Therefore, the multilayer printed circuit board means a build-up board in which PCBs are formed in multiple layers.
- the multilayer printed circuit board may form a via hole electrically connecting the inner circuit pattern and the outer circuit pattern through laser processing, and may form a plated layer on the inner surface of the via hole to prepare the printed circuit board. Thereafter, if necessary, a solder resist layer may be further formed as a protective layer on the plating layer, or a larger number of outer layers may be formed.
- the copper foil laminate may be manufactured using a prepreg that is a material of a printed circuit board for a semiconductor package.
- prepregs and copper-clad laminates which are materials of a printed circuit board for a conventional semiconductor package, are basically Physical properties such as high heat resistance, high rigidity and low coefficient of thermal expansion (Low CTE) are required, and a large amount of inorganic layered material is used compared to resin.
- the inorganic filler can be made of a substrate having at least 50% when used in excess compared to the total weight of the insulating layer by the resin and the inorganic layer are separated from each other in the laminating step of copying a high temperature and a high pressure non-uniformity up. That is, when the existing BT resin and epoxy resin is used, curing occurs at about 200 ° C. Thus, in the process of manufacturing the prepreg and laminating it on a metal foil and heating and pressurizing it, the flowability of the resin and the inorganic layer material is poor. There is a problem of separation. Such a separation substrate may have a problem of deterioration of physical properties, but may adversely affect heat resistance and reliability.
- multilayer prepreg In the manufacturing process of the multilayer printed circuit board, after the multilayer prepreg and copper foil are laminated and processed in the same manner as forming the outer copper foil inner layer circuit and applying PSR, a four-layer printed circuit board is obtained.
- multilayer prepreg is glass fiber. It has a high resin (including inorganic layer) content with respect to the flow rate, and the resin / inorganic layer material separation phenomenon becomes more severe. .
- the present invention is to provide a thermosetting resin composition that does not occur in the separation of the resin and the inorganic layer material after the lamination process while using an excess of about 50% of the inorganic filler.
- Another object of the present invention to provide a prepreg prepared using the thermosetting resin composition and the method for producing a metal foil laminate that can be applied to both sides and multilayer printed circuit board using the prepreg. It is for.
- the present invention comprises (a) about 10 to 55 weight of bismaleimide-triazine or cyanate resin
- a curing agent which is a polyfunctional phenol resin having a hydroxy group equivalent of about 100 to 300; with respect to 100 parts by weight of the resin mixture comprising:
- thermosetting resin composition comprising.
- thermosetting resin composition is a solvent; And at least one additive selected from the group consisting of a curing accelerator, a flame retardant, a lubricant, a dispersant, a plasticizer and a silane coupling agent.
- the present invention also provides a prepreg prepared by impregnating the thermosetting resin composition on a fiber substrate.
- the present invention provides a method for producing a metal foil laminate comprising the step of integrating the metal foil containing the prepreg by heating and pressing.
- a thermosetting resin composition according to a specific embodiment of the present invention will be described in detail.
- the present invention uses a polyfunctional phenol resin having a specific content of hydroxy group equivalent ratio as a curing agent in a thermosetting resin composition comprising bismaleimide triazine (BT) or a cyanate resin and an epoxy resin.
- the present invention relates to a thermosetting resin composition for a printed circuit board having a uniform insulating layer by suppressing separation of a resin and an inorganic layer material in the process of integrating by heating and pressing after prepreg lamination.
- the present invention also relates to a prepreg prepared using the thermosetting resin and a method for producing a metal plate laminate using the prepreg.
- the thermosetting resin, the prepreg and the metal plate according to the present invention Laminates can be applied both to the production of multilayer printed circuit boards as well as to double-sided printed circuit boards.
- the novolac resin reacts first at a temperature around 150 ° C, It is effective in suppressing the rapid flow of the resin and the inorganic layer material during the process. This flow suppression prevents the separation of the resin and the inorganic filler, and with the imidazole-based accelerator, the same effect can be obtained even with the lower content of novolak resin.
- the inorganic filler of 50% or more can be used according to the use of the specific content of the novolak resin, it is possible to stably secure all the properties of high heat resistance, high rigidity and low thermal expansion coefficient.
- thermosetting resin composition comprising (a) BT or cyanate resin, (b) a four o'clock resin, (c) a novolak resin and (d) an inorganic layered material.
- the present invention comprises (a) about 10 to 55% by weight of bismaleimide-triazine or cyanate resin, (b) about 35 to 80% by weight of epoxy resin, and (c) about 100 to 300 equivalents of hydroxy group. It provides a thermosetting resin composition comprising about 120 to 300 parts by weight of (d) an inorganic layered material with respect to 100 parts by weight of a resin mixture containing 5 to 15 parts by weight of a curing agent which is a polyfunctional phenol resin.
- the (a) BT or cyanate-based resin and (b) epoxy resin usually means a thermosetting resin impregnated with a prepreg, and the type thereof is not limited.
- the BT resin is a thermosetting resin that can be used as an insulating layer of an electromagnetic plate requiring high performance and high integration, and may have a weight average molecular weight of 2,000 to 5,000.
- the cyanate resin exhibits a high glass transition temperature due to an increase in the crosslinking density, thereby showing excellent thermal and electrical properties.
- the cyanate resin is not particularly limited in kind, and those well known to those skilled in the art may be used.
- the cyanate resin Bisphenol A cyanate resin, bisphenol E cyanate resin, novolac cyanate resin, dicyclopentadiene bisphenol (DCPD bispenol) cyanate resin, tetramethyl bisphenol (tetramehtyl bisphenol) F-type cyanate resin.
- the present invention may further include a cyanate ester resin having two or more cyanate groups in one molecule, if necessary, which can be used by repolymerizing a monomer.
- a cyanate ester resin having two or more cyanate groups in one molecule, if necessary, which can be used by repolymerizing a monomer.
- the monomer change rate of the cyanate compound in the prepolymerized cyanate ester resin is preferably reacted to 10 to 70 mol%, more preferably to 30 to 60 mol%. If the monomer change rate of the compound is less than 10 mol%, recrystallization may occur. If it exceeds 70 mol%, the viscosity of the varnish becomes too high to impregnate the substrate and the like, and the storage stability of the varnish is also reduced.
- the epoxy resin is one selected from the group consisting of bisphenol A epoxy resin, phenol novolac epoxy resin, tetraphenyl ethane epoxy resin, naphthalene epoxy resin, biphenyl epoxy resin and dicyclopentadiene epoxy resin The above can be used.
- n is 0 or an integer from 1 to 50
- the resin mixture means (a) BT or cyanate resin, (b) epoxy resin and (C) novolak resin used for the curing agent, wherein (a) and (b
- the content range of resin is the curing agent of (c) Including the content range of the resin used may be appropriately adjusted so that the total resin mixture may be 100% by weight.
- the ( a ) BT or cyanate resin may be used in an amount of 10 to 55% by weight based on the total resin mixture.
- the epoxy resin may be used in 35 to 80% by weight based on the total resin mixture.
- the resin used as a curing agent in the present invention is characterized by using a polyfunctional phenol resin (c) having a hydroxyl group equivalent of about 100 to 300, and is used in a specific content in the composition of the present invention to separate the resin and the inorganic layer material. You can prevent it.
- the BT resin is melted in the process of raising the high temperature to about 200 ° C and the resins agglomerate with each other, the low temperature reaction is induced by the addition of the novolak resin can control the flow of the resin and the inorganic filler. Therefore, in the case of the present invention, it is possible to prevent the separation of the resin and the inorganic layer after the prepreg laminated on the metal foil, thereby manufacturing a printed circuit board having a uniform insulation layer to ensure high heat resistance, high reliability, and low thermal expansion It is characterized by the physical properties of the coefficient.
- the hydroxy group equivalent of the polyfunctional phenol resin as the curing agent is less than about 100, there is a problem of excessive flowability, and if the equivalent exceeds about 300, the excess is used, so that the glass transition temperature drops and the coefficient of thermal expansion increases. have.
- Such a curing agent may be used in an amount of 5 to 15% by weight based on the total resin mixture of (a) to (c). If the content of the curing agent is less than 5% by weight can not be cured at low temperature, the separation of the resin and the inorganic filler can not be suppressed, and if the content is more than 15% by weight too much the semi-ungseong becomes greater pattern fill and flowability There is a problem with this falling.
- Such a hardener of the present invention may be prepared by a conventional method However, it is preferable to have the above-mentioned hydroxyl group content.
- the curing agent may include novolak resins such as phenol novolak resins, bisphenol A novolak resins, cresol novolak resins, phenol-modified xylene resins, alkyl phenol resins, and phenol-modified melamine resins.
- the present invention may further include a resol phenol resin, and examples thereof include phenol type, cresol type, alkyl type ⁇ bisphenol A type, or copolymers thereof.
- a hardening accelerator can further be used for the purpose of promoting reaction of a thermosetting resin and the polyfunctional phenol resin which is the said hardening
- the kind and compounding quantity of a hardening accelerator are not specifically limited, For example, an imidazole compound, an organophosphorus compound, a tertiary amine, a quaternary ammonium salt, etc. are used, 2 or more types can be used together.
- the present invention uses an imidazole compound as a curing accelerator.
- the content of the curing agent is about 0.1 to 1 based on 100 parts by weight of the resin mixture comprising (a) bismaleimide-triazine or cyanate-based resin and (b) epoxy resin. When used in parts by weight, less than 5-15% by weight can be used.
- imidazole-based curing accelerator 1-methyl imidazole, 2-methyl imidazole, 2-ethyl 4-methyl imidazole, 2-ethyl 4-methyl imidazole), 2-phenyl imidazole, 2-cyclohexyl 4-methyl imidazole, 4-butyl 5-ethyl imidazole ), 2-methyl 5-ethyl imidazole, 2-octyl 4-hexyl imidazole, 2,5-dichloro-4-ethyl imidazole ( Imidazoles such as 2,5-dichloro-4-ethyl imidazole), .2-butoxy 4-allyl imidazole, and the imidazole derivatives, and the like. Preference is given to 2-methyl imidazole or 2-phenyl imidazole due to their low cost.
- the inorganic layered material (d) is not particularly limited in kind, and materials well known to those skilled in the art may be used.
- the non-mechanical layering materials include silica, aluminum, such as natural silica, fused silica, amorphous silica and hoi low silica.
- Molybdenum compounds such as trihydroxide (ATH), magnesium hydroxide, molybdenum oxide and zinc molybdate, zinc borate, zinc star Zinc stannate, alumina, clay, kaolin, talc, calcined kaolin, calcined talc, mica, short glass fiber (E glass or D glass) Glass fine powder such as, and hollow glass.
- the average particle diameter (D50) of the inorganic filler is not particularly limited.
- the average particle diameter (D50) of the inorganic layer filler is preferably 0.2 to 5 micrometers in view of dispersibility.
- the (d) inorganic filler is about 120 to 300 parts by weight based on 100 parts by weight of the resin mixture comprising (a) bismaleimide-triazine or cyanate resin, (b) epoxy resin and (c) novolak resin Parts, more preferably about 120 to 200 parts by weight.
- the content of the inorganic layered material is less than about 120 parts by weight, the separation between the resin and the inorganic layered material does not almost occur even when novolac is used in the high temperature and high pressure lamination process, but the amount of the inorganic layered material is required for semiconductor packaging. It is not possible to create a low thermal expansion substrate.
- the inorganic filler may deteriorate the flowability of the resin, and may cause void defects in the production of copper foil laminates, which are not separation phenomena.
- this invention can also be used as various solvent solutions by adding a solvent to a resin composition as needed.
- the solvent is not particularly limited as long as it exhibits good solubility in the resin component, and alcohol, ether, ketone, amide, aromatic hydrocarbon, ester, and nitrile compounds may be used. Or you may use the combined solvent which used 2 or more types together.
- the content of the solvent is not particularly limited as long as the resin composition may be impregnated into the glass fiber during prepreg manufacture.
- the thermosetting resin composition of the present invention may further include at least one additive selected from the group consisting of a flame retardant, a lubricant, a dispersant, a plasticizer and a silane coupling agent which are usually added as needed.
- the resin composition of the present invention may further include various high polymer compounds such as other thermosetting resins, thermoplastic resins and oligomers and elastomers thereof, other flame resistant compounds or additives, so long as the properties inherent in the resin composition are not impaired. These are not particularly limited as long as they are selected from those commonly used.
- thermosetting resin composition prepared by impregnating the thermosetting resin composition on a fiber substrate.
- the kind of the fiber base material is not particularly limited, but a polyamide-based resin fiber such as a glass fiber base material, a polyamide resin fiber, an aromatic polyamide resin fiber, a polyester resin fiber, an aromatic polyester resin fiber, a wholly aromatic polyester Synthetic fiber base composed of woven or nonwoven fabric mainly composed of polyester resin fibers such as resin fibers, polyimide resin fibers, fluorine resin fibers, kraft paper, cotton linter paper, stray paper of linter and kraft pulp, etc.
- a paper substrate may be used, and preferably a glass fiber substrate is used. The glass fiber substrate can improve the strength of the prepreg, lower the water absorption rate, and reduce the coefficient of thermal expansion.
- the glass substrate used in the present invention may be selected from glass substrates used for various printed circuit board materials. Examples thereof include, but are not limited to, glass fibers such as E glass, D glass, S glass, T glass, and NE glass. If necessary, the glass-based material may be selected according to the intended use or performance. Glass-based forms are typically woven, nonwoven, roving, chopped strand mats or surfacing mats. Although the thickness of the said glass base material is not specifically limited, About 0.01-0.3 kPa etc. can be used. Of these materials, glass fiber materials are more preferred in terms of strength and water absorption properties.
- the organic solvent for the resin varnish is not particularly limited as long as it is compatible with the resin component. Specific examples of these include acetone, Methyl ethyl ketone, ketones such as methyl isobutyl ketone and cyclonuxanone, aromatic hydrocarbons such as benzene, toluene and xylene, and amides such as dimethylformamide and dimethylacetamide, such as methyl cellosolve, butyl cellosolve Aliphatic alcohols;
- the solvent used is volatilized by 80% by weight or more. Accordingly, also the manufacturing method and drying conditions are limited, the temperature during drying is about 80 ° C to 180 t, the time is not particularly limited to the balance with the varnish gelling time.
- the impregnation amount of the varnish is preferably such that the resin solid content of the varnish is about 30 to 80% by weight relative to the total amount of the resin solid content of the varnish and the base material.
- the method for preparing the prepreg in the present invention is not particularly limited, and may be prepared by a method well known in the art.
- the method of manufacturing the prepreg may be used by an impregnation method, a coating method using various coaters, a spray injection method, or the like.
- the prepreg after preparing the varnish, may be prepared by impregnating the fiber substrate with the varnish.
- a method for manufacturing a copper foil laminate comprising the step of integrating a metal foil including the prepreg by heating and pressing.
- the metal foil is copper foil; Aluminum foil; Nickel, nickel-phosphorus, nickel-tin alloy, nickel-iron alloy, lead or lead-tin alloy as a middle layer, a three-layered composite foil containing copper layers of different thicknesses on both sides, or aluminum and copper foil It includes the composite foil of the two-layer structure which compounded.
- a copper foil or an aluminum foil is used, and one having a thickness of about 2 to 200 can be used, but the thickness thereof is preferably about 2 to 35.
- copper foil is used as said metal foil.
- nickel, nickel-phosphorus, nickel-tin alloy, nickel-iron alloy, lead, or lead-tin alloy is used as an intermediate layer, and on both sides thereof, a copper layer of 0.5 to 15 kPa and 10 to 10 3 layers of composite foil or aluminum and copper foil with 300 copper layers You may use the composite two-layered composite foil.
- the maximum temperature of the lamination (press) can be about 200 ° C or more, it can be usually about 220 ° C.
- the pressure condition during pressurization of the metal laminate is not particularly limited, and about 0.5 to 8.0 MPa is preferred, and in particular, about 1.5 to 5.0.
- the metal laminate including the prepreg thus prepared can be used for the manufacture of double-sided or multilayer printed circuit boards after laminating in one or more sheets.
- the present invention can manufacture a double-sided or multilayer printed circuit board by circuit-processing the metal foil laminate, the circuit processing can be applied to a method performed in a general double-sided or multilayer printed circuit board manufacturing process.
- thermosetting resin composition As described above, according to the present invention, by using the above-mentioned resin thermosetting resin composition, it can be applied to all printed circuit boards of various fields, and can be preferably used for the manufacture of printed circuit boards for semiconductor packages. ⁇ Effects of the Invention ⁇
- the present invention can provide a thermosetting resin composition which can be used for the production of prepregs for printed circuit boards by using a polyfunctional phenol resin having a certain amount of hydroxyl group equivalents as a curing agent.
- the present invention is to prepare a prepreg by using the thermosetting resin composition to proceed to the process of laminating the prepreg on the metal foil and to suppress the separation of the resin and the inorganic filler to produce a printed circuit board having a uniform insulating layer Can be. Therefore, according to the present invention, it is possible to secure high heat resistance and high reliability and to secure physical properties having a lower coefficient of thermal expansion than before.
- thermosetting resin compositions of Examples and Comparative Examples were mixed with the following compositions and contents as in Tables 1 and 2 to prepare thermosetting resin compositions of Examples and Comparative Examples, respectively.
- thermosetting resin compositions were put in methyl ethyl ketone and mixed in a high speed stirrer until the solid content was 50% by weight to prepare a resin varnish.
- the resin varnish was impregnated in a 43 urn glass fiber (1078, E-glass, manufactured by Nittobo), followed by hot air drying at a temperature of 150 ° C. to prepare a prepreg for double-sided copper foil laminate.
- the copper clad laminated board was manufactured and the basic representative physical property was measured.
- the resin / inorganic filler separation phenomenon was observed by a four-layer printed circuit board method.
- Circuits were formed on both sides of the copper-clad laminate, and the multilayer prepreg and copper foil described above were laminated one by one, and then heated and pressed to integrate. The conditions were carried out for 90 minutes at a pressure of 35 kg / crf at a temperature of 220 ° C. The copper foils of the prepared four-layer substrates were etched entirely to inspect their appearance, and resin / inorganic layer material separation and voids were confirmed.
- Experimental example Physical property evaluation
- the glass transition temperature was measured at a temperature increase rate of 5 ° C / min using DMA (Dymamic Mechanical Analysis).
- the coefficient of thermal expansion was measured at a temperature rising rate of 10 ° C / min using Mechanical Analysis.
- Moisture Absorption Rate (%) ⁇ (Copper Laminate Weight after Moisture-Copper Foil Lamination Weight before Hygroscopic) / Copper Foil Lamination Weight before Hygroscopic ⁇ 100
- the copper foil on the surface was peeled off (etched), and the resin / inorganic filler separation phenomenon and the presence or absence of voids in the resin were observed. .
- the external appearance of the double-sided copper foil laminated board was also examined, and it was produced by the 4-layer board
- prepregs having the same formulation have a high resin content, and thus, a multi-flow prepreg having a high flow rate more easily generates resin / inorganic layered material separation. Therefore, if separation does not occur in the multi-layer prepreg, there may be some void defects, but the prepreg for double-sided copper foil laminate also does not generate separation of the resin / inorganic layered material.
- the low thermal expansion coefficient of the substrate in the semiconductor package process is to reduce the warpage (defect) occurring during the package mounting process. Therefore, since the semiconductor package process requires a lower coefficient of thermal expansion (CTE) if possible, it is not desirable to increase the CTE even if there is no separation or void of the resin / inorganic layer material in appearance.
- CTE coefficient of thermal expansion
Abstract
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JP2013546050A JP5738428B2 (ja) | 2011-07-22 | 2012-07-20 | 熱硬化性樹脂組成物とこれを用いたプリプレグおよび金属箔積層板 |
US13/984,990 US9278505B2 (en) | 2011-07-22 | 2012-07-20 | Thermosetting resin composition and prepreg and metal clad laminate using the same |
CN201280004529.XA CN103298882B (zh) | 2011-07-22 | 2012-07-20 | 热固性树脂组合物及使用其的预浸料和金属箔层压板 |
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