JP2015171767A - Metal-clad composite laminated substrate, and semiconductor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal-clad composite laminated substrate which has such a uniform and homogeneous insulation layer that an aperture or a twist of a glass fiber is not generated when used in the substrate and which is excellent in high strength, heat resistance, dimensional stability and discoloration resistance.SOLUTION: A composite laminated substrate is obtained by using one piece of a surface-treated glass fiber film-used prepreg or piling up a plurality of the prepregs. The prepreg is obtained by applying a thermocurable resin composition to the surface-treated glass fiber film and drying the applied composition and still exists in an uncured state. A value of the common-use flexural rigidity of the surface-treated glass fiber film is 3-100 times of that of the common-use flexural rigidity of the surface-untreated glass fiber film when measured by a method described in JIS R 3420. The metal-clad composite laminated substrate has a metal layer on one or both surfaces of the prepreg or a laminate thereof.

Description

  The present invention relates to a metal-clad composite laminated substrate using a surface-treated glass fiber film and a semiconductor device using the same.

  A conventional method for producing a metal-clad laminate includes laminating glass fiber with an epoxy resin, phenol resin, or silicone resin that is impregnated and dried, an uncured prepreg, and a copper foil that is a metal layer. The pressure pressing method is widely used. In particular, a copper-clad glass epoxy substrate in which an epoxy resin is impregnated into glass fiber is widely used. However, in recent years, a high heat-resistant substrate has been demanded from the viewpoint of the use of a high melting point lead-free solder and the heat generation of the element due to high performance. The glass epoxy substrate has a glass transition temperature around 200 ° C. and is characterized by being easily discolored, and has a problem in heat resistance. Therefore, a glass epoxy substrate highly filled with an inorganic filler is used for the purpose of heat dissipation.

  The glass fiber used for the metal-clad laminated substrate employs a method in which the fiber is surface-treated with a silane coupling agent in order to increase the affinity with the resin, and the adhesion amount is 0.05 to 0.25% by mass. It is general (patent document 1). Conventional surface-treated glass fibers are not self-supporting themselves, and the fibers are not fixed. Accordingly, when the glass fiber is impregnated with the resin highly filled with the inorganic filler as described above to produce an uncured prepreg, opening and twisting occur when heated and pressed. In addition, there is a problem that the substrate itself is twisted and warped due to the inherent stress, and the characteristics are not uniform in the substrate.

  Further, there is a problem that deformation and expansion occur when heated, and the dimensional stability of the substrate is lowered. In order to solve this problem of dimensional stability, there has been proposed a method using a glass cloth in which the ratio of the number of glass fibers and the ratio of the number of warp yarns to weft yarns is predetermined (Patent Document 2). When such a glass cloth is used, the dimensional stability during heat and solder heat resistance of the cloth itself are improved. However, since it is necessary to have a specific fiber structure and woven structure, and the fiber is not yet fixed, the dimensional stability of the resin highly filled with the inorganic filler as described above is questionable. Remains.

  Furthermore, in recent years, metal-clad laminated substrates using a silicone resin that is excellent in heat resistance and weather resistance, which are problematic in epoxy resins, have been studied (Patent Documents 3 to 5). However, since the silicone resin has a lower glass transition temperature than the epoxy resin, the resin itself has a problem of dimensional stability. In addition, the problem of opening and twisting of glass cloth that occurs during heating and pressure pressing has not been solved, and there is a need to develop a multilayer substrate that has excellent heat resistance and weather resistance and good dimensional stability. ing.

Japanese Patent Laid-Open No. 04-370275 Japanese Patent Application Laid-Open No. 07-022719 JP 2010-089493 A Japanese Patent Laid-Open No. 09-111187 JP2013-095862A

  The present invention has been made in view of the above circumstances, and has a uniform and homogeneous insulating layer that does not cause opening or twisting of glass fibers when used as a substrate, and has high strength, heat resistance, dimensional stability, and discoloration resistance. An object of the present invention is to provide a metal-clad composite laminated substrate having excellent properties.

To achieve the above object, the present invention provides:
A composite laminated substrate including one or a plurality of laminated prepregs using a surface-treated glass fiber film,
The prepreg is in an uncured state in which a thermosetting resin composition is applied to the surface-treated glass fiber film and dried, and the conventional bending rigidity of the surface-treated glass fiber film measured by the method described in JIS R 3420 Provides a metal-clad composite laminate substrate having a value of 3 to 100 times the value of the conventional bending stiffness of an untreated glass fiber film and having a metal layer on one side or both sides of the prepreg or laminate thereof. .

  With such a metal-clad composite laminated substrate, the surface treatment does not open or twist the glass fiber, the fiber is fixed with high strength, excellent heat resistance, dimensional stability, and discoloration resistance, and an insulating layer A substrate with high uniformity and uniformity can be obtained.

  Among these, it is preferable that the surface-treated fiber film contains glass fiber, and part or all of the glass fiber is bundled and surface-treated with a cured product of an organosilicon compound.

  If such a surface-treated fiber film is used, the fiber is fixed with higher strength, and the film is surface-treated with an organosilicon compound, so that it has excellent heat resistance and discoloration resistance. A substrate having the same can be obtained.

  Moreover, it is preferable that the said thermosetting resin composition is a silicone resin composition.

Moreover, it is preferable that the said silicone resin composition contains the following (A)-(C) component.
(A) an organopolysiloxane represented by the following average composition formula:
(SiO ₂ ) _a (R ¹ _1-m R ² _m SiO _1.5 ) _b (R ¹ _2-n R ² _n SiO) _c (R ¹ _3-L R ² _L SiO _0.5 ) _d
(In the formula, R ¹ is a monovalent saturated hydrocarbon group having 1 to 10 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms, and R ² is a monovalent unsaturated carbon group having 2 to 8 carbon atoms. A hydrogen group, m = 0 to 1, n = 0 to 2, L = 0 to 3, and 1 ≦ m + n + L ≦ 6, and a, b, c, and d are each 0 ≦ a ≦ 1, (0 ≦ b ≦ 1, 0 ≦ c ≦ 0.9, 0 ≦ d ≦ 0.9, a + b> 0, and a + b + c + d = 1)
(B) Hydrogen polysiloxane containing one or more hydrosilyl groups, and (C) an effective amount of platinum-based catalyst.

  If such a thermosetting resin composition is used, a substrate having more excellent heat resistance, discoloration resistance, and higher mechanical strength can be obtained.

  Furthermore, the thermosetting resin composition preferably contains a filler.

  If such a thermosetting resin composition is used, a substrate having more excellent dimensional stability and mechanical strength and further excellent thermal conductivity can be obtained.

  Furthermore, the filler preferably contains a white pigment.

  If such a thermosetting resin composition is used, a substrate having good light reflectance can be obtained.

  Moreover, it is preferable that the said metal layer is formed by either metal plating, metal foil, and a metal plate.

  In the metal-clad composite laminated substrate of the present invention, the metal layer can be formed as described above.

Furthermore, the present invention provides
Provided is a semiconductor device manufactured using the metal-clad composite laminated substrate.

  Such a semiconductor device requires high heat resistance because it uses a substrate having a uniform and homogeneous insulating layer, high strength, excellent heat resistance, dimensional stability, and discoloration resistance. The semiconductor device can be suitably used in the field.

  If the metal-clad composite laminate substrate according to the present invention, the glass fiber used for the prepreg is free from openings and twists, the glass fiber is fixed with high strength, excellent in heat resistance and dimensional stability, surface uniformity and surface A highly homogeneous substrate is obtained. Further, since the prepreg is used in an uncured state, the prepreg itself has a self-adhesive ability, and therefore, it is not necessary to provide an adhesive layer between the metal layer and the insulating layer, and the insulating layer can be easily manufactured.

It is a top view of the board | substrate at the time of measuring the curvature after the IR reflow test in an Example and a comparative example.

Hereinafter, the present invention will be described in detail, but the present invention is not limited thereto.
The present invention
A composite laminated substrate including one or a plurality of laminated prepregs using a surface-treated glass fiber film,
The prepreg is in an uncured state in which a thermosetting resin composition is applied to the surface-treated glass fiber film and dried, and the conventional bending rigidity of the surface-treated glass fiber film measured by the method described in JIS R 3420 Is a metal-clad composite laminated substrate having a metal bending layer on one or both sides of the prepreg or laminate thereof, which is 3 to 100 times the value of the conventional bending stiffness of the untreated glass fiber film.

  The metal-clad composite laminated substrate of the present invention uses a prepreg using a surface-treated glass fiber film as an insulating layer. As the surface-treated glass fiber film used for the prepreg, a glass cloth made of glass fiber is preferably surface-treated to form a film. Specifically, a glass cloth in which a part or all of the glass fibers are bound with a cured product of an organosilicon compound and surface-treated can be exemplified.

  This surface-treated glass fiber film has a conventional bending stiffness value measured by a method defined in JIS R 3420 that is 3 to 100 times the conventional bending stiffness value of an untreated glass cloth. This multiple is used as an index indicating the degree of change from the so-called “woven” state to the “film” state by surface treatment of the glass fiber, preferably 5 to 60 times, more preferably 10 to 40 times.

  If the above multiple is less than 3 times, the intended dimensional stability and glass fiber fixation, that is, the effect of preventing opening and twisting can hardly be obtained, and the electrical insulation and heat resistance resulting from the siloxane characteristics can be obtained. Properties and weather resistance are insufficient. Moreover, when it exceeds 100 times, the said surface treatment glass fiber film will become hard too much, the softness | flexibility of a board | substrate will be impaired, and a crack etc. will generate | occur | produce.

  When an organosilicon compound is used for the surface treatment, in order to satisfy the above characteristics, the adhesion amount of the organosilicon compound to the glass fiber film is 100% by mass of the surface treated glass fiber film (glass fiber film after treatment). On the other hand, 2 mass% or more and 90 mass% or less are preferable, More preferably, they are 5 mass% or more and 70 mass% or less, More preferably, they are 10 mass% or more and 60 mass% or less.

  An adhesion amount of 2% by mass or more is preferable because the above characteristics can be satisfied, and as a result, characteristics such as electrical insulation, heat resistance, dimensional stability, and self-supporting properties are improved. An adhesion amount of 90% by mass or less is preferable because electrical insulation, dimensional stability, and the like can be obtained without lowering heat resistance or impairing flexibility.

  The glass cloth used in the present invention can be opened by a columnar flow or a water flow by a high-frequency vibration method. Furthermore, the glass fiber applicable to the present invention can be any glass fiber such as E glass, A glass, D glass, and S glass. General-purpose E glass is preferred because of cost and availability, but quartz glass is preferred when higher properties are required (for example, low dielectric constant, high heat resistance, low impurities, etc.).

As such a glass cloth, the fiber weave density is preferably 10 to 200/25 mm, more preferably 15 to 100/25 mm, and the mass is preferably 5 to 400 g / m ² , more preferably 10 to 10/25 mm. 300 g / m ² . If it is this range, binding by surface treatment will be performed effectively and characteristics, such as electrical insulation, heat resistance, dimensional stability, and self-supporting property, can be obtained easily.

  As a method of weaving such glass cloth, plain weave, satin weave, Nanako weave, or the like can be used. Moreover, the glass fiber woven with the glass fiber by which both or one side was textured may be sufficient. Further, the triaxially woven glass fiber has a higher strength and a highly reliable surface-treated glass fiber film. Further, a nonwoven fabric or a woven fabric in which long fibers are arranged in a certain direction can also be used. In addition, when the sizing agent is applied to the glass cloth, the treatment with the organosilicon compound may be hindered, so it is desirable to remove it beforehand.

  In the present invention, depending on the required properties, the glass fiber includes carbon fiber, inorganic fiber such as ceramic, metal fiber such as boron fiber, steel fiber, tungsten fiber, new heat resistant fiber such as aramid, phenol, etc. A woven fabric in which the fibers are mixed can be used as the glass cloth.

  As an organosilicon compound used for surface treatment of glass cloth in order to obtain a surface-treated glass fiber film, alkoxysilane, polysilazane, and a partially hydrolyzed condensate thereof, a silicone-modified varnish, or an addition-curable silicone resin One or more compounds selected from the group consisting of:

  For example, the alkoxysilane includes tetraalkoxysilane such as tetramethoxysilane and tetraethoxysilane, trimethylmethoxysilane, trimethylethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, and n-propyl. Alkoxyalkoxysilanes such as triethoxysilane, hexyltrimethoxysilane, octyltriethoxysilane, decyltrimethoxysilane, 1,6-bis (trimethoxysilyl) hexane, methylphenyldimethoxysilane, methylphenyldiethoxysilane, diphenyldimethoxysilane , Diphenyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, p-styryltrimethoxysilane, etc. Alkoxyalkoxysilanes such as alkylalkoxysilane, hydroxytrimethoxysilane, hydroxytriethoxysilane, etc., alkenylalkoxysilanes such as vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyl Epoxy group-containing alkoxysilanes such as methyldimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-methacryl Loxypropyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldiethoxy Lan, (meth) acryl group-containing alkoxysilane such as 3-acryloxypropyltrimethoxysilane, N-2- (aminoethyl) 3-aminopropyltrimethoxysilane, N-2- (aminoethyl) 3-aminopropylmethyl Dimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane, 3-allylaminopropyltrimethoxysilane, N- (N-vinylbenzyl) -2 Amino group-containing alkoxysilanes such as aminoethyl-3-aminopropyltrimethoxysilane and its hydrochloride, N- (N-vinylbenzyl) -2-aminoethyl-3-aminopropylmethyldimethoxysilane and its hydrochloride, -Isocyanatopropyltriethoxy Silane, isocyanate alkoxysilanes such as tris- (trimethoxysilylpropyl) isocyanurate, 3-ureidopropyltriethoxysilane, 3-chloropropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane, Examples include alkoxysilane compounds such as bis (trisethoxysilylpropyl) tetrasulfide, and these alkoxysilanes may be used alone or in combination. Preferable examples include methyltrimethoxysilane, vinyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and 3-aminopropyltrimethoxysilane, but are not limited thereto.

  Moreover, you may use the 1 type, or 2 or more types of partial hydrolysis-condensation product of the said alkoxysilane. This partial hydrolysis-condensation product may be arbitrarily prepared by adding a known condensation catalyst, or a commercially available product may be used. Examples of commercially available products include epoxy group-containing alkoxysilane oligomer X-41-1059A (manufactured by Shin-Etsu Chemical Co., Ltd.), amino group-containing alkoxysilane oligomer X-40-2651 (manufactured by Shin-Etsu Chemical Co., Ltd.). Etc.

  As polysilazane, 1,1,3,3-tetramethyldisilazane, hexamethyldisilazane, 1,3-divinyl-1,1,3,3-tetramethyldisilazane, 1,1,3,3,5 , 5-hexamethylcyclotrisilazane and the like, but not limited thereto.

  As the silicone-modified varnish, various silicone-modified varnishes such as alkyd-modified varnish, polyester-modified varnish, epoxy-modified varnish, and acrylic-modified varnish are used, and may be selected depending on the end use and purpose.

Addition-curable silicone resins include unsaturated groups composed of SiO ₂ units, R ¹ SiO _1.5 units, R ¹ _2-q R ² _q SiO units, and R ¹ _3-r R ² _r SiO _0.5 units. A composition comprising an organopolysiloxane containing (here, q = 0-2 and r = 0-3), an organopolysiloxane containing at least one hydrosilyl group, and a curing effective amount of a platinum catalyst is used. What is necessary is just to select suitably according to a use and the objective.
R ¹ is a monovalent saturated hydrocarbon group having 1 to 10 carbon atoms or a monovalent aromatic hydrocarbon group, R ² is a monovalent unsaturated hydrocarbon group having 2 to 8 carbon atoms, At least one contains R ² and in the saturated group-containing organopolysiloxane has SiO ₂ units or R ¹ SiO _1.5 units. In particular, R ¹ is preferably a methyl group, an ethyl group, a propyl group, a cyclohexyl group, or a phenyl group, and R ² is preferably a vinyl group or an allyl group. By using the SiO ₂ unit or the R ¹ SiO _1.5 unit as an essential component, it becomes possible to suppress the brittleness and firmly fix the fiber.

  As for the linear expansion coefficient of the XY direction of the surface treatment glass fiber film in this invention, 20 ppm / degrees C or less is preferable. As a method for measuring the linear expansion coefficient in the XY direction, a sample was cut out to a width of 3 mm, a length of 25 mm, and a thickness of 50 to 300 mm, and a load of 100 mN was applied with a thermomechanical analysis (TMA) apparatus at 5 ° C./min. The measuring method by a tensile test can be illustrated in the temperature range of -60 degreeC to 200 degreeC with the temperature increase rate of. Since the linear expansion coefficient is 20 ppm / ° C or less, that is, it has a low thermal expansion coefficient, it has high thermal shock resistance and can be used as a high-strength board. It becomes possible to respond.

  As the method for producing the surface-treated glass fiber film, a general glass fiber treatment method is applied. For example, as a glass fiber, in the case where the sizing agent is attached, the glass fiber is used after being removed by a known method, or a glass fiber from which the sizing agent has been removed is obtained and used.

  Suitable examples of the coating solution used for the surface treatment include generally alkoxysilane and water or alcohols, ketones, glycol ethers, hydrocarbon nonpolar solvents such as toluene, xylene, hexane and heptane, and organics such as ethers. Examples include those added to a solvent, and pH adjusters such as formic acid, acetic acid, propionic acid, oxalic acid, and aqueous ammonia, pigments, dyes, surfactants, thickeners, and the like can also be added. Moreover, in order to accelerate | stimulate hardening, you may add the condensation catalyst of an alkoxy group, for example, various organometallic type | system | groups, an amine type compound, etc. Furthermore, you may prepare what added the filler as needed as a solution or a dispersion liquid.

  In this case, an aqueous coating solution is preferable in consideration of the coating environment. Amino group-containing silane coupling agent KBM-903 (manufactured by Shin-Etsu Chemical Co., Ltd.) is a preferred organosilicon compound because of its excellent stability in water and good solubility.

  A general glass fiber coating method can be applied as a coating method of the coating liquid for producing the surface-treated glass fiber film of the present invention. Typical coating methods include direct gravure coater, chamber doctor coater, offset gravure coater, roll kiss coater, reverse kiss coater, bar coater, reverse roll coater, slot die, air doctor coater, forward rotation roll coater, blade coater, There are knife coaters, impregnation coaters, MB coaters, MB reverse coaters and the like. Among these, a direct gravure coater, an offset coater, and an impregnation coater coating method are preferable for producing a surface-treated glass fiber film.

  Also. Although the conditions vary depending on the organosilicon compound to be used, a step of heating at room temperature to 300 ° C. for 1 minute to 24 hours can be added for the purpose of drying and curing after coating. In consideration of productivity, cost, workability, etc., the surface-treated glass fiber film is preferably produced by heat treatment from room temperature to 250 ° C. for 3 minutes to 4 hours, more preferably from room temperature to 230 ° C. for 5 minutes to 1 hour.

  The coating solution is, for example, a solution obtained by diluting the organosilicon compound with a solvent. As examples of the solvent, water or organic solvents can be used alone or in admixture of two or more. Examples of organic solvents include alcohols such as methanol, ethanol, isopropanol and n-butanol, ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone, glycol ethers such as ethylene glycol and propylene glycol, and fats such as hexane and heptane. And aromatic hydrocarbons such as toluene and xylene, ethers such as diethyl ether, diisopropyl ether and di n-butyl ether. In addition, pH adjusting agents such as organic acids such as formic acid, acetic acid, propionic acid, and oxalic acid, and aqueous ammonia, pigments, fillers, surfactants, thickeners, and the like can be added to the diluted solution.

Further, an alkoxy group condensation catalyst may be added, and examples thereof include organometallic compounds such as organotin compounds, organotitanium compounds, and organic bismuth compounds, and amine compounds.
Examples of organometallic compound-based condensation catalysts include dibutyltin dimethoxide, dibutyltin diacetate, dibutyltin dioctate, dibutyltin dilaurate, dibutyltin bis (acetylacetonate), dibutyltin bis (benzyl malate), dimethyltin dimethoxide, dimethyl Organotin compounds such as tin diacetate, dioctyltin dioctate, dioctyltin dilaurate, tin dioctate, and tin dilaurate, and tetraisopropyl titanate, tetranormal butyl titanate, tetra tertiary butyl titanate, tetra normal propyl titanate, tetra-2 -Ethylhexyl titanate, diisopropyl ditertiary butyl titanate, dimethoxy titanium bisacetylacetonate, diisopro Organic titanium compounds such as xititanium bisethylacetoacetate, ditertiary butoxytitanium bisethylacetoacetate, and ditertiary butoxytitanium bismethylacetoacetate, organic bismuth compounds such as bismuth tris (2-ethylhexanoate) or bismuth tris (neodecanoate), etc. The metal Lewis acid etc. of these are mentioned, These can be used individually by 1 type or in combination of 2 or more types. Examples of amine compounds include hexylamine, di-2-ethylhexylamine, N, N-dimethyldodecylamine, di-n-hexylamine, dicyclohexylamine, di-n-octylamine, hexamethoxymethylmelamine and the like. It is done.
Of these condensation catalysts, organic titanium compounds are particularly preferred.

  In the present invention, when preparing the prepreg, the thermosetting resin composition applied to the surface-treated glass fiber film may be any known thermosetting resin composition, such as a silicone resin composition, an epoxy. A resin composition, a phenol resin composition, etc. are mentioned, Preferably a silicone resin composition or an epoxy resin composition, More preferably, a silicone resin composition is mentioned. If a silicone resin composition is used, a highly heat-resistant substrate having excellent heat resistance and discoloration resistance can be obtained.

This silicone resin composition preferably contains the following components (A) to (C).
(A) an organopolysiloxane represented by the following average composition formula:
(SiO ₂ ) _a (R ¹ _1-m R ² _m SiO _1.5 ) _b (R ¹ _2-n R ² _n SiO) _c (R ¹ _3-L R ² _L SiO _0.5 ) _d
(In the formula, R ¹ is a monovalent saturated hydrocarbon group having 1 to 10 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms, and R ² is a monovalent unsaturated carbon group having 2 to 8 carbon atoms. A hydrogen group, m = 0 to 1, n = 0 to 2, L = 0 to 3, and 1 ≦ m + n + L ≦ 6, and a, b, c, and d are each 0 ≦ a ≦ 1, (0 ≦ b ≦ 1, 0 ≦ c ≦ 0.9, 0 ≦ d ≦ 0.9, a + b> 0, and a + b + c + d = 1)
(B) Hydrogen polysiloxane containing one or more hydrosilyl groups, and (C) an effective amount of platinum-based catalyst.

If the above-mentioned silicone resin composition has SiO ₂ units or R ¹ _1-m R ² _m SiO _1.5 units, there is no brittleness and a strong uncured prepreg and metal-clad composite laminated substrate Is obtained.

  Moreover, it is more preferable that the above-mentioned silicone resin composition is solid or semi-solid at room temperature. In the present invention, “room temperature” indicates a range of 15 to 30 ° C., and “semi-solid” has plasticity, and when formed into a specific shape, the shape is at least 1 hour, preferably 8 hours or more. The state of a substance that can hold Thus, for example, a flowable material having a very high viscosity at room temperature is essentially flowable, but changes to the applied shape in a short time of at least 1 hour (ie, breakage) due to the very high viscosity. ) Cannot be seen with the naked eye, the substance is in a semi-solid state.

  Thus, since the silicone resin composition is solid at room temperature, it is solid even after being applied to the surface-treated glass fiber film and dried, and in the A-stage state, so that it is possible to store the uncured prepreg more. There is an advantage that it can be easily formed by a hot press machine, and the shape of the metal-clad composite laminated substrate can be formed more freely.

Here, the organopolysiloxane of component (A) contained in the silicone resin composition will be described.
In the component (A), R ¹ is a monovalent saturated hydrocarbon group having 1 to 10 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms. Specific examples include a methyl group, an ethyl group, Examples thereof include alkyl groups such as propyl group, isopropyl group, butyl group, isobutyl group and cyclohexyl group, or aryl groups such as phenyl group, tolyl group, xylyl group and naphthyl group. Among these, a methyl group and a phenyl group are particularly preferable.

R ² is a monovalent unsaturated hydrocarbon group having 2 to 8 carbon atoms, and specific examples thereof include alkenyl groups such as vinyl group, allyl group, propenyl group, and isopropenyl group. A vinyl group is particularly preferable.

Specific examples of the component (A) include R ¹ _1-m R ² _m SiO _1.5 units, R ¹ _2-n R ² _n SiO units, and R ¹ _3-m R ² _m SiO _{0 as described below.} An organopolysiloxane having ₅ units,
(PhSiO _1.5 ) _e1 (Me ₂ SiO) _f (Me ₂ ViSiO _0.5 ) _G1
(PhSiO _1.5 ) _e1 (Me ₂ SiO) _f (MeVi ₂ SiO _0.5 ) _G1
(PhSiO _1.5 ) _e2 (Me ₂ SiO) _H (MeViSiO) _i (Me ₂ ViSiO _0.5 ) _G2
(Wherein e1, e2, f, G1, G2, H, and i are 0.24 ≦ (e1 and e2) ≦ 0.9, 0.09 ≦ f ≦ 0.75, 0.01 ≦, respectively) (G1 and G2) ≦ 0.5, 0.01 ≦ H ≦ 0.74, 0.01 ≦ i ≦ 0.74 and a number satisfying e1 + f + G1 = 1 or e2 + H + i + G2 = 1, and the Me ₂ SiO (It is particularly preferable that at least a part of or all of the units are repeated continuously in order to impart flexibility of the resin.)
Or an organopolysiloxane having only R ¹ _1-m R ² _m SiO _1.5 units,
(PhSiO _1.5 ) _j (ViSiO _1.5 ) _k
(MeSiO _1.5 ) _j (ViSiO _1.5 ) _k
(Where j and k are numbers satisfying 0.5 ≦ j ≦ 0.95, 0.05 ≦ k ≦ 0.5 and j + k = 1, respectively)
Alternatively, examples include, but are not limited to, organopolysiloxanes having SiO ₂ units and R ¹ _3- LR ² _L SiO _0.5 units.
(SiO ₂ ) _s (Me ₃ SiO _0.5 ) _t1 (MePhViSiO _0.5 ) _t2
(Where s, t1, and t2 are numbers satisfying 0.25 ≦ s ≦ 0.77, 0.02 ≦ t1 ≦ 0.12, 0.18 ≦ t2 ≦ 0.73, and s + t1 + t2 = 1, respectively. Is)
In the above formulas, Me represents a methyl group, Ph represents a phenyl group, and Vi represents a vinyl group. Moreover, said organopolysiloxane can use 1 type (s) or 2 or more types.

  Moreover, it is preferable that the weight average molecular weight of this (A) component in polystyrene conversion exists in the range of 1,000-1,000,000, and if it is this weight average molecular weight, it will be solid or semisolid at room temperature. It is suitable from the viewpoint of workability and curability.

  The component (A) having such a resin structure is a combination of compounds that are raw materials for each unit such that each siloxane unit has a required molar ratio in the produced polymer, and for example, cohydrolysis condensation is performed in the presence of an acid. It can be synthesized by doing.

  Examples of the raw material for each siloxane unit include chlorosilanes corresponding to each siloxane unit, and alkoxysilanes such as methoxysilanes corresponding to these chlorosilanes.

Moreover, the hydrogenpolysiloxane of the (B) component contained in a silicone resin composition is demonstrated.
The component (B) preferably contains one or more hydrosilyl groups.

Specific examples of the component (B) include, but are not limited to, hydrogen polysiloxanes exemplified below. Moreover, this hydrogen polysiloxane can use 1 type (s) or 2 or more types.
(PhSiO _1.5 ) _u1 (Me ₂ SiO) _v (Me ₂ HSiO _0.5 ) _w1
(PhSiO _1.5 ) _{u 2} (Me ₂ SiO) _x (MeHSiO) _y (Me ₂ HSiO _0.5 ) _{w2
(PhSiO 1.5) u3 (MeHSiO)} v
_{(MeSiO 1.5) u4 (MeHSiO)} v
(Me ₂ HSiO _1/2 ) ₂ (Ph ₂ SiO _2/2 ) _z
(Where u1, u2, u3, u4, v, w1, w2, x, y, and z are 0.24 ≦ (u1, u2, u3, and u4) ≦ 0.9, 0.09, respectively. ≦ v ≦ 0.75, 0.01 ≦ (w1 and w2) ≦ 0.5, 0.01 ≦ x ≦ 0.74, 0.01 ≦ y ≦ 0.74, z = 1 to 10 and , U1 + v + w1 = 1, u2 + x + y + w2 = 1, u3 + x = 1, or u4 + y = 1.)

  The blending amount of the component (B) is such that the hydrogen atoms (SiH groups) bonded to the silicon atoms of the component (B) with respect to the total of the monovalent unsaturated hydrocarbon groups of the component (A) are 0.1 in molar ratio. It is preferable that the amount is ˜4.0, particularly preferably 0.5 to 3.0, and more preferably 0.8 to 2.0. If it is 0.1 or more, the curing reaction proceeds smoothly and a silicone cured product can be easily obtained. If it is 4.0 or less, the remaining amount of unreacted SiH groups in the cured product is reduced. It is preferable because it can suppress changes with time of the properties of the cured product.

  In the present invention, it is preferable that one or both of the component (A) and the component (B) contain a silanol group in order to impart adhesion. The amount of the siloxane unit having a silanol group is preferably about 10 mol% or less (0 to 10 mol%) with respect to all siloxane units in the component (A) and the component (B).

The platinum group metal catalyst of component (C) used in the silicone resin composition is blended to cause the addition curing reaction of the silicone resin composition, and platinum-based, palladium-based, and rhodium-based catalysts are used. is there. As the catalyst, any conventionally known catalyst for promoting the hydrosilylation reaction can be used. In consideration of cost and the like, platinum-based materials such as platinum, platinum black, and chloroplatinic acid, such as H ₂ PtCl ₆ · pH ₂ O, K ₂ PtCl ₆ , KHPtCl ₆ · pH ₂ O, K ₂ PtCl ₄ , K ₂ PtCl ₄ · pH ₂ O, PtO ₂ · pH ₂ O, PtCl ₄ · pH ₂ O, PtCl ₂ , H ₂ PtCl ₄ · pH ₂ O (where p is a positive integer), etc. Examples thereof include hydrocarbons such as olefins, complexes with alcohols or vinyl group-containing organopolysiloxanes, and these catalysts can be used singly or in combination of two or more.

  The compounding amount of the platinum group metal catalyst may be an effective amount for curing, and is usually 0.1 to 500 ppm in terms of mass as a platinum group metal with respect to the total amount of the component (A) and the component (B). Preferably it is the range of 0.5-100 ppm.

  The thermosetting resin composition illustrated by the above-mentioned silicone resin composition can contain a filler as needed. The filler can be used alone or in combination of two or more. The filler can be added for the purpose of lowering the coefficient of linear expansion and improving the thermal conductivity and strength of the metal-clad composite laminated substrate. The filler may be any known filler, for example, precipitated silica, fumed silica, fused silica, fused spherical silica, crystalline silica and other silicas, fumed titanium dioxide, oxidized Examples thereof include zinc, silicon nitride, aluminum nitride, boron nitride, antimony trioxide, alumina, zirconium oxide, zinc sulfide, magnesium oxide, barium sulfate and the like.

  The blending amount of the filler is preferably in the range of 900 parts by mass or less (0 to 900 parts by mass) per 100 parts by mass of the thermosetting resin composition from the viewpoint of the linear expansion coefficient and strength of the obtained metal-clad composite laminated substrate. The range is more preferably 600 parts by mass or less (0 to 600 parts by mass), still more preferably 10 to 600 parts by mass, and particularly preferably 50 to 500 parts by mass.

  The filler can contain white pigment or both white pigment and inorganic filler components. The white pigment is added to the thermosetting resin composition for the purpose of increasing the light reflectivity of the metal-clad composite laminate substrate when the resulting metal-clad composite laminate substrate needs to reflect light. However, when obtaining a metal-clad composite laminated substrate that does not need to reflect light, it may not be added to the thermosetting resin composition. Here, “the metal-clad composite laminate substrate needs to reflect light” means that the light reflectance of the metal-clad composite laminate substrate is preferably 80% or more over the entire visible light region (that is, 80 to 100%). ).

  The white pigment that can be used in the present invention can be used without limitation as long as it is a known white pigment that has been generally used, but preferably titanium dioxide, zirconium oxide, zinc sulfide, zinc oxide, magnesium oxide. And barium sulfate and the like, and two or more of these may be used in combination. Of the white pigments, titanium dioxide, alumina, and magnesium oxide are more preferable, and titanium dioxide is even more preferable. The crystal form of titanium dioxide may be any of the rutile type, anatase type, and brookite type, but the rutile type is preferably used.

The average particle diameter and shape of the white pigment are not particularly limited, but the average particle diameter is preferably 0.05 to 10.0 μm, more preferably 0.1 to 5.0 μm, and still more preferably 0.1 to 0.1 μm. 1.0 μm. The average particle size can be determined as a mass average value D ₅₀ in the particle size distribution measurement by laser diffraction method _(or median diameter). The white pigment component can be used alone or in combination of two or more.

  The blending amount of the white pigment is preferably 1 to 300 parts by weight, more preferably 3 to 200 parts by weight, and more preferably 10 to 150 parts by weight per 100 parts by weight of the total amount of the thermosetting resin composition. It is particularly preferred. When the amount is 1 part by mass or more, the whiteness of the cured product of the resulting thermosetting resin composition is sufficient, which is preferable. When the blending amount is 300 parts by mass or less, it accounts for the total filler of the inorganic filler added for the purpose of lowering the linear expansion coefficient of the metal-clad composite laminated substrate of the present invention and improving the mechanical strength of the substrate. This is preferable because the ratio does not decrease.

  In this case, the inorganic filler represents a filler other than a white pigment, and is intended to reduce the linear expansion coefficient of the metal-clad composite laminated substrate of the present invention and to improve the mechanical strength of the substrate. It can be added to the resin composition. As a component of the inorganic filler, any known inorganic filler may be used, for example, silicas such as fused silica, fused spherical silica, crystalline silica, alumina, silicon nitride, aluminum nitride, Examples thereof include boron nitride and antimony trioxide, and fused silica, fused spherical silica, and alumina are particularly preferable. The components of the inorganic filler can be used singly or in combination of two or more.

The average particle size and shape of the inorganic filler components are not particularly limited. The average particle size of the inorganic filler component is usually 0.5 to 50 μm, preferably 1 to 10 μm, more preferably 1 to 5 μm, from the viewpoint of moldability and fluidity of the resulting silicone resin composition. . The average particle size, as described above, can be determined as a mass average value D ₅₀ in the particle size distribution measurement by laser diffraction method _(or median diameter).

  From the viewpoint of the linear expansion coefficient and strength of the resulting metal-clad composite laminated substrate, the amount of the inorganic filler component is 6,000 parts by mass or less (0 to 600 parts per 100 parts by mass of the total amount of the thermosetting resin composition). Mass part), preferably 10 to 600 parts by mass, and more preferably 50 to 500 parts by mass.

  In addition, there are materials that can be used as both the white pigment and the inorganic filler, that is, the white pigment can be used as an inorganic filler, specifically, titanium dioxide, alumina, silica, and the like. It is done.

  In addition to the components described above, various known additives can be blended in the thermosetting resin composition as necessary.

Adhesion aid An adhesive aid (adhesiveness-imparting agent) can be added to the thermosetting resin composition as necessary in order to impart adhesiveness. The adhesion assistant can be used alone or in combination of two or more. Examples of the adhesion assistant include a hydrogen atom (SiH group) bonded to a silicon atom in one molecule, an alkenyl group (for example, Si—CH═CH ₂ group) bonded to a silicon atom, and an alkoxysilyl group (for example, trimethoxysilyl). Group) and an epoxy group (for example, glycidoxypropyl group, 3,4-epoxycyclohexylethyl group) a linear or cyclic silicon atom containing at least two, preferably two or three functional groups Several to 50, preferably about 4 to 20, organosiloxane oligomers, organooxysilyl-modified isocyanurate compounds represented by the following general formula (1), hydrolysis condensates thereof (organosiloxane-modified isocyanurate compounds) and A combination of two or more of these may be used.

(In the formula, R ₃ is an organic group represented by the following partial structural formula (2) or a monovalent hydrocarbon group containing an aliphatic unsaturated bond, but at least one of R ₃ is a partial structural formula (It is an organic group represented by (2).)
(In the formula, R ₄ is a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms, and n ′ is an integer of 1 to 6, particularly 1 to 4.)

The monovalent hydrocarbon group containing an aliphatic unsaturated bond represented by R ₃ in the general formula (1) includes a vinyl group, an allyl group, a propenyl group, an isopropenyl group, a butenyl group, an isobutenyl group, a pentenyl group, and a hexenyl group. C2-C8, such as a C2-C8 alkenyl group, a cyclohexenyl group, etc., C6-C8 cycloalkenyl groups etc. are mentioned. Examples of the monovalent hydrocarbon group for R ₄ in the partial structural formula (2) include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, a pentyl group, and a hexyl group. alkyl group such as a group, cycloalkyl groups such as cyclohexyl group, exemplified above alkenyl machine and cycloalkenyl groups for R _3, further 1 to 8 carbon atoms, such as an aryl group such as a phenyl group, in particular 1 to 6 monovalent A hydrocarbon group is mentioned, Preferably it is an alkyl group.

  Further, as adhesion aids, 1,5-bis (glycidoxypropyl) -1,3,5,7-tetrimethylcyclotetrasiloxane, 1-glycidoxypropyl-5-trimethoxysilylethyl-1, Examples include 3,5,7-tetramethylcyclotetrasiloxane and the like, and siloxane compounds represented by the following formula.

(In the formula, g and h are each an integer in the range of 0 to 50, and g + h is an integer satisfying 2 to 50, preferably 4 to 20.)

  Among the above siloxane compounds, compounds that give particularly good adhesion to the cured product of the resulting thermosetting resin composition include silicon-bonded alkoxy groups and alkenyl groups or silicon-bonded hydrogen atoms (SiH in one molecule). Group).

  The amount of the adhesion assistant is usually 10 parts by mass or less (that is, 0 to 10 parts by mass), preferably 0.1 to 8 parts by mass, and more preferably 0 to 100 parts by mass of the thermosetting resin composition. About 2 to 5 parts by mass. If the blending amount is 10 parts by mass or less, the hardness of the cured product of the thermosetting resin composition will not be adversely affected, and the surface tackiness may not be increased.

Curing inhibitor A curing inhibitor can be blended in the thermosetting resin composition used in the present invention, if necessary. The curing inhibitor can be used singly or in combination of two or more. Examples of the curing inhibitor include, for example, organopolysiloxanes having a high vinyl group such as tetramethyltetravinylcyclotetrasiloxane, triallyl isocyanurate, alkyl maleate, acetylene alcohols and their silane-modified products and siloxane-modified products, Examples thereof include compounds selected from the group consisting of oxide, tetramethylethylenediamine, benzotriazole, and mixtures thereof. The curing inhibitor is usually added in an amount of 0.001 to 1.0 part by mass, preferably 0.005 to 0.5 part by mass, per 100 parts by mass of the thermosetting resin composition.

Although the preparation method of a thermosetting resin composition is demonstrated, it is not limited to these.
Usually, it is stored in two liquids so that the curing does not proceed, and the two liquids are mixed and cured at the time of use. Of course, a small amount of the above-mentioned curing inhibitor can be added and used as one liquid. Further, when a silicone resin composition is used as the thermosetting resin composition, a base composition is obtained by uniformly mixing organopolysiloxane, hydrogen polysiloxane, and catalyst, and toluene, xylene, heptane is added to the base composition. After adding a solvent such as, an inorganic filler may be further added to prepare a solution or dispersion.

  In the case of such a prepreg, a glass fiber (filament) is surface-treated with a cured product such as an organosilicon compound and used in a bound film, and the opening and twisting of the glass fiber is not observed after heating and pressing. Therefore, the prepreg is excellent in heat resistance and dimensional stability, and has high surface uniformity and surface uniformity. In addition, the surface-treated glass fiber film is coated with a thermosetting resin composition, dried, and in an uncured state. Since the prepreg itself has a self-adhesive ability, between the metal layer and the insulating layer or between the insulating layers. There is no need to provide a new adhesive layer between the layers, and the substrate can be manufactured by a simple method.

Although the manufacturing method of the metal-clad composite laminated substrate of this invention is demonstrated, this invention is not limited to these.
First, a glass cloth is surface-treated with an organosilicon compound and heat-cured to obtain a surface-treated glass fiber film. Next, a thermosetting resin composition is applied to the surface-treated glass fiber film and dried to obtain an uncured prepreg. And a metal-clad composite laminated substrate is obtained by arrange | positioning metal foil or a metal plate as a metal layer on both sides or one side of what laminated | stacked the prepreg 1 sheet or several sheets, and heat-press-molding. Alternatively, a metal-clad composite laminate substrate can be obtained by subjecting one or a plurality of the prepregs to heat and pressure molding and then applying metal plating as a metal layer to both sides or one side.

  The drying conditions for the prepreg are not particularly limited as long as the solvent in the thermosetting resin composition is evaporated and an uncured (A stage) prepreg is obtained. At this time, if the thermosetting resin composition is solid or semisolid at room temperature, the surface of the dried prepreg has no tack and a prepreg excellent in workability can be obtained. As drying conditions, for example, a surface-treated glass fiber film coated with a thermosetting resin composition dissolved and dispersed in a solvent is preferably dried at 50 to 150 ° C., more preferably 60 to 100 ° C. Can be done. A heating device such as an oven or a dryer may be used as appropriate.

  When performing metal plating, it may follow a conventional method and is not particularly limited. For example, a method of forming a metal coating layer on a fiber film by an electroless plating method can be mentioned. The metal film layer to be formed is preferably selected from Ni, Cu, Fe, Co or an alloy composed of two or more of these metals, for example, Ni—Cu alloy, Fe—Ni alloy, Fe—Co alloy, and the like. . In addition, after electroless plating, film formation by electrolytic plating may be performed.

  As a pattern formation method by plating, for example, electroless plating is performed on glass fibers, a dry film is laminated, an arbitrary pattern is formed by exposure and development, and further, electrolytic plating is performed to complete the pattern. Thus, a metal-clad composite laminated substrate patterned by plating is obtained.

  The metal foil or metal plate used in the present invention may be any known metal foil or metal plate. As the metal foil, for example, a metal foil having a thickness of about 5 to 70 μm such as copper, gold, silver, aluminum, nickel, and tin can be used. Among these, as metal foil, what is used as conductor foil is preferable, normally copper foil is used, and what gave the surface chemical conversion treatment, such as black oxidation treatment, is used suitably. In order to enhance the adhesion effect, it is preferable to use a conductive foil obtained by chemically or mechanically roughening the contact surface (surface to be overlapped) with the film in advance. Specific examples of the conductor foil that has been subjected to surface roughening treatment include a roughened copper foil that has been electrochemically treated when an electrolytic copper foil is produced.

  Examples of the metal plate include a copper plate, an aluminum plate, and a ceramic plate. The thickness of the metal plate is not particularly limited. It becomes possible to improve heat dissipation by using a metal plate. Moreover, in the point which improves heat dissipation, the one where the thickness of the surface treatment fiber film is thinner is preferable. In particular, the fiber film according to the present invention is useful as a high heat dissipation substrate because it has flexibility, high mechanical strength, and insulation is maintained even when it is a thin film.

  As a method of disposing a metal foil or a metal plate on the surface-treated fiber film, a commonly used method can be used without any particular limitation. For example, the method of bonding a metal foil or a metal plate on at least one surface of the surface-treated fiber film can be mentioned. Examples of the bonding method include a pressing method and a laminating method. The conditions for the pressing method and the laminating method can be appropriately selected according to the characteristics of the surface-treated fiber film. After bonding, a metal-clad composite laminate substrate is obtained through patterning and plating steps according to a conventional method.

  The heat curing under heat and pressure molding is, for example, preferably 1 to 100 MPa, more preferably 5 to 50 MPa, preferably 50 to 200 ° C., more preferably using a heat press, a vacuum press or the like. Can be carried out at a temperature of 70 to 180 ° C. The curing time is preferably 1 to 200 minutes, more preferably 2 to 120 minutes. Further, post-cure can be performed as necessary.

  The metal composite laminate substrate of the present invention uses a film in which glass fibers (filaments) are surface-treated with a cured product such as an organosilicon compound and are bound, and the openings and twists of the glass fibers after heating and pressing. Therefore, the substrate is excellent in heat resistance and dimensional stability, and has high surface uniformity and surface uniformity. In addition, a prepreg coated with a thermosetting resin composition and dried on this surface-treated glass fiber film is used, and the prepreg itself has a self-adhesive ability. There is no need to provide a new adhesive layer between the layers, and the substrate can be manufactured by a simple method.

  The above-described metal-clad composite laminated substrate can be made into a semiconductor device by mounting a semiconductor element on the substrate, for example. As mentioned above, the metal-clad composite laminate substrate has no glass fiber openings or twists, so it has high strength, glass fiber fixed, excellent heat resistance, discoloration resistance, dimensional stability, surface uniformity and Since a substrate with high surface uniformity can be obtained, it can be applied to semiconductor devices and high-performance semiconductor devices that require high heat resistance using lead-free solder or the like. Since the insulating layer itself has self-adhesive ability, it is not necessary to provide a new adhesive layer between the metal layer and the insulating layer or between the insulating layers, and the manufacturing process of the semiconductor device can be simplified. .

  EXAMPLES Hereinafter, although a manufacture example, a comparative manufacture example, a synthesis example, an Example, and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example.

(Production Example 1)
As an organosilicon compound, methyltrimethoxysilane (trade name: KBM-13, manufactured by Shin-Etsu Chemical Co., Ltd.) is used, and glass cloth (used thread: E250, density: warp thread 59/25 mm, weft thread 57/25 mm, (Thickness: 87 μm, mass: 95 g / m ² ) and dried by heating at 100 ° C. for 10 minutes, and then heat-treated at 100 ° C. for 1 hour and 200 ° C. for 1 hour to obtain a surface treated glass fiber film (A1 ) Was produced.

1. Appearance The surface uniformity of the obtained surface-treated glass fiber film, that is, whether the surface was smooth and free from cracks was visually confirmed.

2. Conventional Bending Rigidity About the obtained surface-treated glass fiber film, the conventional bending rigidity was measured by the method described in JIS R 3420, and the conventional bending rigidity magnification was measured from the following formula.
Conventional bending stiffness magnification = Conventional bending stiffness of surface-treated glass fiber film /
Conventional bending stiffness of untreated glass fiber

  In addition, from the obtained surface-treated fiber film, six warp directions were cut from the fibers for testing a rectangular test piece having a width of 25 mm and a length of 250 mm, and the linear expansion coefficient was measured.

3. Linear expansion coefficient About the obtained surface treatment glass fiber film, a sample was cut out to a width of 3 mm, a length of 25 mm, and a thickness of 50 to 300 mm, and a thermomechanical analysis (TMA) apparatus (apparatus name: TMA / SS6000, Seiko Instruments Inc.) The tensile test was performed in a temperature range of -60 ° C to 200 ° C at a temperature increase rate of 5 ° C / min while applying a load of 100 mN. The thermal expansion coefficient was measured from the amount of elongation of the surface-treated glass fiber film with respect to temperature.

  These measurement results are shown in Table 1.

(Production Example 2)
As an organosilicon compound, 10 g of 3-glycidoxypropyltrimethoxysilane (trade name: KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.), 0.02 g of a surfactant, and 0.05 g of acetic acid are added to 100 g of water to prepare a coating solution. did. A surface-treated glass fiber film (A2) was obtained in the same manner as in Production Example 1 using this coating solution. Using the obtained glass fiber film, the appearance, mechanical properties, and linear expansion coefficient were evaluated in the same manner as in Production Example 1.

(Production Example 3)
A coating solution was prepared by adding 50 g of an epoxy group-containing oligomer (trade name: X-41-1059A manufactured by Shin-Etsu Chemical Co., Ltd.) to 50 g of toluene. To this coating solution, 10 g of titanium oxide (trade name: PF-691, average particle size: about 0.2 μm, manufactured by Ishihara Sangyo) was added to prepare a toluene dispersion. Using this dispersion and glass cloth (used yarn: D450, density: 53 warps / 25 mm, 53 warps / 25 mm, thickness: 42 μm, mass: 47 g / m ² ), the same as in Production Example 1 A surface-treated glass fiber film (A3) was obtained by the method. Using the obtained glass fiber film, the appearance, mechanical properties, and linear expansion coefficient were evaluated in the same manner as in Production Example 1.

(Production Example 4)
1 mass of chloroplatinic acid is added to 100 g of an addition-curable resin in which R ¹ SiO _1.5 unit-containing unsaturated group-containing organopolysiloxane and hydrosilyl group-containing organopolysiloxane are blended so that H / Vi = 1.1. A% octyl alcohol solution was added to 10 ppm of platinum, and a coating solution to which 100 g of toluene was added was prepared. Using this coating solution, the same heat-cured surface-treated glass fiber film (A4) as in Production Example 1 was obtained. Using the obtained glass fiber film, the appearance, mechanical properties, and linear expansion coefficient were evaluated in the same manner as in Production Example 1.

(Comparative Production Example 1)
A coating solution was prepared by adding 5 g of 3-glycidoxypropyltrimethoxysilane (trade name: KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.) to 95 g of toluene. Using this coating solution, a surface-treated glass fiber film (B1) was obtained by the same method as in Production Example 1. Using the obtained glass fiber film, the appearance, mechanical properties, and linear expansion coefficient were evaluated in the same manner as in Production Example 1.

(Comparative Production Example 2)
3-Glycidoxypropyltrimethoxysilane (trade name: KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.) is placed in a 200 mm × 240 mm × 3 mm Teflon (registered trademark) processed formwork, and glass cloth (used) Yarn: E250, density: warp yarn 59/25 mm, weft yarn 57/25 mm, thickness: 87 μm, mass: 95 g / m ² ), and dried by heating at 100 ° C. for 10 minutes. The adhesion amount of the organosilicon compound was 92% by mass, but a large crack was generated in the surface-treated glass fiber film, and subsequent measurement could not be performed.

(Comparative Production Example 3)
Example of production using glass cloth not subjected to surface treatment (used yarn: D450, density: 53 warps / 25 mm, 53 warps / 25 mm, thickness: 42 μm, mass: 47 g / m ² ) (B3) In the same manner as in Example 1, the appearance, mechanical properties, and linear expansion coefficient were evaluated.

  As shown in Table 1, it was found that when the glass fiber was not surface-treated or when the amount of resin adhered was too thin, the conventional bending rigidity magnification was low, and the film was not self-supporting and the fiber was not fixed. . On the other hand, when the amount of adhesion was too large, cracks occurred on the surface. In Examples 1 to 4, good surface-treated glass fiber films were obtained in which the conventional bending rigidity magnification was in the range of 3 to 100 times by adjusting the adhesion amount. A metal-clad composite laminated substrate was molded by the method described below using the surface-treated glass fiber film produced in Examples 1 to 4, and evaluated.

(Synthesis Example 1)
-Organopolysiloxane resin (a1)-
Organosilane represented by PhSiCl ₃ : 952.5 g (81.5 mol%), ClMe ₂ SiO (Me ₂ SiO) ₈ SiMe ₂ Cl: 398.0 g (9.1 mol%), MeViSiCl ₂ : 37.8 g ( 4.9 mol%), Me ₂ ViSiCl: 30.2 g (4.5 mol%) dissolved in a toluene solvent, dropped into water, co-hydrolyzed, neutralized by water washing and alkali washing, after dehydration The solvent was stripped to synthesize an organopolysiloxane resin (a1). This resin had a weight average molecular weight of 11,000 and a vinyl group content of 0.05 mol / 100 g.

(Synthesis Example 2)
-Organopolysiloxane resin (a2)-
Organosilane represented by PhS _i Cl _3: 562.1g (90 _{mol%), V i S i Cl} 3: 47.8g (10 mole%) were dissolved in toluene solvent, it was dropped into water, cohydrolysis Further, after neutralization and dehydration by washing with water and alkali, the solvent was stripped to synthesize organopolysiloxane resin (a2). This resin has a weight average molecular weight of 4000 and a vinyl group content of 0.08 mol / 100 g.

(Synthesis Example 3)
-Hydrogen polysiloxane resin (b1)-
Organosilane represented by PhSiCl ₃ : 666.8 g (81.8 mol%), ClMe ₂ SiO (Me ₂ SiO) ₈ SiMe ₂ Cl: 278.6 g (9.1 mol%), MeHSiCl ₂ : 40.3 g ( 9.1 mol%) is dissolved in a toluene solvent, dropped into water, co-hydrolyzed, further neutralized by water washing and alkali washing, dehydrated, stripped of the solvent, and hydrogen polysiloxane resin (b1) is obtained. Synthesized. This resin had a weight average molecular weight of 11,000 and a hydrosilyl group content of 0.05 mol / 100 g.

(Synthesis Example 4)
-Hydrogen polysiloxane resin (b2)-
Organosilane represented by PhSiCl ₃ : 666.8 g (81.8 mol%), ClMe ₂ SiO (Me ₂ SiO) ₈ SiMe ₂ Cl: 278.6 g (9.1 mol%), Me ₂ HSiCl: 31.6 g (9.1 mol%) dissolved in a toluene solvent, dropped into water, co-hydrolyzed, neutralized by water washing and alkali washing, dehydrated, stripped of the solvent, hydrogen polysiloxane resin (b2) Was synthesized. This resin had a weight average molecular weight of 9000 and a hydrosilyl group content of 0.05 mol / 100 g.

Example 1
Organopolysiloxane resin (a1) obtained in Synthesis Example 1: 95 g, Hydrogen polysiloxane resin (b1) obtained in Synthesis Example 3: 105 g, acetylene alcohol-based ethynylmethyldecylcarbinol as reaction inhibitor: 0 0.2 g, 1% by mass octyl alcohol solution of chloroplatinic acid: 0.2 g was added and stirred well to obtain a base composition. To this base composition, 290 g of toluene was added as a solvent, and 395 g of alumina (trade name: Admafine AO-502, average particle size: about 0.7 μm, manufactured by Admatechs) and titanium dioxide (trade name) : PF-691, average particle size: about 0.2 μm, manufactured by Ishihara Sangyo Co., Ltd.) and stirred with a sinky mixer to prepare a toluene dispersion of the silicone resin composition.
The surface-treated glass fiber film was coated on the surface-treated glass fiber film by immersing the surface-treated glass fiber film (A1) obtained in Production Example 1 in this toluene dispersion. By leaving this surface-treated glass fiber film at 110 ° C. for 8 minutes, an uncured state (A stage state) prepreg in which toluene was evaporated was obtained. This prepreg had a solid film formed at room temperature. The two prepregs were press molded at 160 ° C. for 20 minutes and then at 200 ° C. for 70 minutes by a hot press machine to obtain a composite laminated substrate (E-1-1). Further, the two prepregs are sandwiched between two copper foils (Furukawa Electric Co., Ltd., 35 μm thick), and are hot-pressed at 160 ° C. for 20 minutes and then at 200 ° C. for 70 minutes to form copper-clad A composite laminated substrate (E-1-2) was obtained.

4). Appearance By visually observing the surface of the obtained composite laminated substrate, the presence or absence of fiber openings or twists was confirmed.

5. Heat resistance The obtained composite laminated substrate was subjected to IR reflow treatment at 260 ° C. for 60 seconds with an IR reflow apparatus, and then the change in surface color was visually observed.

6). Warpage after IR reflow test Using the obtained copper-clad composite laminate substrate, a substrate having a shape as shown in FIG. 1 (length 50 mm × width 100 mm) was produced. Warpage (unit: mm) in the longitudinal direction of the substrate after performing IR reflow treatment at 260 ° C. for 60 seconds with an IR reflow device (device name: TNR15-225LH, manufactured by Tamura Seisakusho Co., Ltd.) It was measured.

  These measurement results are shown in Table 2.

(Example 2)
Using the organopolysiloxane resin (a2) obtained in Synthesis Example 2: 71 g and the hydrogen polysiloxane resin (b1) obtained in Synthesis Example 3: 129 g, and the other components were the same as in Example 1 except that the composite laminate substrate ( E-2-1) and a copper-clad composite laminated substrate (E-2-2) were obtained. The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

(Example 3)
Using the organopolysiloxane resin (a1) obtained in Synthesis Example 1: 95 g and the hydrogen polysiloxane resin (b2) obtained in Synthesis Example 4: 105 g, the others were the same as in Example 1 except that the composite laminated substrate ( E-3-1) and a copper-clad composite laminated substrate (E-3-2) were obtained. The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

Example 4
The surface-treated glass fiber film (A2) obtained in Production Example 2 was used in place of the surface-treated glass fiber film (A1) obtained in Production Example 1, and the others were the same as in Example 1 except that the composite laminated substrate (E -4-1) and a copper-clad composite laminated substrate (E-4-2) were obtained. The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

(Example 5)
The surface-treated glass fiber film (A3) obtained in Production Example 3 was used instead of the surface-treated glass fiber film (A1) obtained in Production Example 1, and the other components were the same as in Example 1 except for the composite laminated substrate (E -5-1) and a copper-clad composite laminated substrate (E-5-2) were obtained. The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

(Example 6)
The surface-treated glass fiber film (A4) obtained in Production Example 4 was used in place of the surface-treated glass fiber film (A1) obtained in Production Example 1, and the others were the same as in Example 1 except that the composite laminated substrate (E -6-1) and a copper clad composite laminated substrate (E-6-2) were obtained. The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

(Comparative Example 1)
Instead of the surface-treated glass fiber film (A1) obtained in Production Example 1, glass fiber (B3) that has not been surface-treated is used, and the other components are the same as in Example 1 except that the composite laminated substrate (F-1-1) is used. ) And a copper-clad composite laminated substrate (F-1-2). The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1 using the obtained composite laminate substrate and copper-clad composite laminate substrate. The measurement results are shown in Table 3 below.

(Comparative Example 2)
Instead of the surface-treated glass fiber film (A1) obtained in Production Example 1, glass fiber (B3) that has not been surface-treated is used, and the others are the same as in Example 2 except that the composite laminated substrate (F-2-1) ) And a copper-clad composite laminated substrate (F-2-2). The appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 2 using the obtained composite laminate substrate and copper-clad composite laminate substrate.

(Comparative Example 3)
Using glass fiber (B3) not treated with an organosilicon compound, 10 parts by mass of a cresol novolac type epoxy resin (product name: EPICRON N-695, manufactured by DIC Corporation), a phenol novolak resin (product name: PHENOLITE TD) -2090, manufactured by DIC Corporation) 5 parts by mass, imidazole catalyst (product name: 2E4MZ, manufactured by Shikoku Kasei Co., Ltd.) 0.1 part by mass, spherical silica (product name: SC-2050-SE, Inc.) A slurry solution of an epoxy resin composition consisting of 85 parts by mass (manufactured by Admatechs) and 50 parts by mass of MEK solvent was impregnated and dried at 100 ° C. for 10 minutes to obtain an uncured epoxy resin-impregnated glass cloth. Using the four uncured epoxy resin impregnated glass cloths obtained, a glass epoxy substrate (F-3-1) and a copper-clad glass epoxy substrate (F-3-2) were obtained in the same manner as in Example 1. It was. Using the obtained glass epoxy substrate and copper-clad glass epoxy substrate, the appearance, IR reflow test, and heat resistance were evaluated in the same manner as in Example 1.

  As shown in Table 2, Examples 1-6 can obtain the board | substrate which does not have an opening and a twist of glass fiber by using a favorable glass fiber film. For this reason, it was clarified that the substrate itself was twisted and the generation of warpage was suppressed by the inherent stress, and the IR reflow test showed good results. In addition, it was revealed that the glass fiber film surface-treated with an organosilicon compound is used, and the thermosetting resin composition for coating the film is made of a silicone resin composition, and therefore has high discoloration resistance.

  On the other hand, as shown in Table 3, in Comparative Examples 1 and 2 using glass fibers that were not subjected to surface treatment, openings and twists occurred in the glass fibers, and warping occurred in the IR reflow test. Moreover, in the comparative example 3 using a commercially available white glass epoxy board | substrate, although the favorable result was shown in the IR reflow test by the effect | action of an epoxy resin, discoloration generate | occur | produced.

  From the above results, the metal-clad composite laminate substrate of the present invention is a substrate having a uniform and homogeneous insulating layer that does not cause opening or twisting of glass fibers, and excellent in heat resistance, dimensional stability, and discoloration resistance. It has been clarified that it has been suggested that the high-melting point lead-free solder is used or that it is suitably used for a substrate for a semiconductor device in a field requiring high heat resistance using a high-performance element.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has any configuration that has substantially the same configuration as the technical idea described in the claims of the present invention and that exhibits the same effects. Are included in the technical scope.

Further, R ² is a monovalent unsaturated hydrocarbon group having 2 to 8 carbon atoms, and specific examples include a vinyl group, an allyl group, a propenyl group, an alkenyl group such as Isopurope two Le group. A vinyl group is particularly preferable.

The monovalent hydrocarbon group containing an aliphatic unsaturated bond represented by R ₃ in the general formula (1) includes a vinyl group, an allyl group, a propenyl group, an isopropenyl group, a butenyl group, an isobutenyl group, a pentenyl group, and a hexenyl group. C2-C8, such as a C2-C8 alkenyl group, a cyclohexenyl group, etc., C6-C8 cycloalkenyl groups etc. are mentioned. Examples of the monovalent hydrocarbon group for R ₄ in the partial structural formula (2) include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, a pentyl group, and a hexyl group. Monovalent valences of 1 to 8 carbon atoms, particularly 1 to 6 carbon atoms, such as alkyl groups such as cycloalkyl groups, cycloalkyl groups such as cyclohexyl groups, alkenyl groups and cycloalkenyl groups exemplified for R ₃ above, and aryl groups such as phenyl groups A hydrocarbon group is mentioned, Preferably it is an alkyl group.

The metal- clad composite laminate substrate of the present invention uses a film in which glass fibers (filaments) are surface-treated with a cured product such as an organosilicon compound and bound, and after heating and pressurization, Since there is no twist, the substrate is excellent in heat resistance and dimensional stability, and has high surface uniformity and surface uniformity. In addition, a prepreg coated with a thermosetting resin composition and dried on this surface-treated glass fiber film is used, and the prepreg itself has a self-adhesive ability. There is no need to provide a new adhesive layer between the layers, and the substrate can be manufactured by a simple method.

As shown in Table 1, it was found that when the glass fiber was not surface-treated or when the amount of resin adhered was too thin, the conventional bending rigidity magnification was low, and the film was not self-supporting and the fiber was not fixed. . On the other hand, when the adhesion amount was too large, cracks occurred on the surface. In Production Examples 1 to 4, good surface-treated glass fiber films were obtained in which the conventional bending rigidity magnification was in the range of 3 to 100 times by adjusting the adhesion amount. Using the surface-treated glass fiber films produced in Production Examples 1 to 4, metal-clad composite laminate substrates were molded by the method described below and evaluated.

Claims (8)

A composite laminated substrate including one or a plurality of laminated prepregs using a surface-treated glass fiber film,
The prepreg is in an uncured state in which a thermosetting resin composition is applied to the surface-treated glass fiber film and dried, and the conventional bending rigidity of the surface-treated glass fiber film measured by the method described in JIS R 3420 The value of is 3 to 100 times the value of the conventional bending stiffness of the untreated glass fiber film, and has a metal layer on one side or both sides of the prepreg or laminate thereof. Metal-clad composite laminated substrate.   The surface-treated fiber film contains glass fiber, and part or all of the glass fiber is bound and surface-treated with a cured product of an organosilicon compound. Metal-clad composite laminate board.   The metal-clad composite laminate substrate according to claim 1 or 2, wherein the thermosetting resin composition is a silicone resin composition. The metal-clad composite laminate substrate according to claim 3, wherein the silicone resin composition contains the following components (A) to (C).
(A) an organopolysiloxane represented by the following average composition formula:
(SiO ₂ ) _a (R ¹ _1-m R ² _m SiO _1.5 ) _b (R ¹ _2-n R ² _n SiO) _c (R ¹ _3-L R ² _L SiO _0.5 ) _d
(In the formula, R ¹ is a monovalent saturated hydrocarbon group having 1 to 10 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms, and R ² is a monovalent unsaturated carbon group having 2 to 8 carbon atoms. A hydrogen group, m = 0 to 1, n = 0 to 2, L = 0 to 3, and 1 ≦ m + n + L ≦ 6, and a, b, c, and d are each 0 ≦ a ≦ 1, (0 ≦ b ≦ 1, 0 ≦ c ≦ 0.9, 0 ≦ d ≦ 0.9, a + b> 0, and a + b + c + d = 1)
(B) Hydrogen polysiloxane containing one or more hydrosilyl groups, and (C) an effective amount of platinum-based catalyst.   The metal-clad composite laminated substrate according to any one of claims 1 to 4, wherein the thermosetting resin composition contains a filler.   6. The metal-clad composite laminate substrate according to claim 5, wherein the filler contains a white pigment.   The metal-clad composite laminate substrate according to any one of claims 1 to 6, wherein the metal layer is formed of any one of metal plating, metal foil, and metal plate.   A semiconductor device manufactured using the metal-clad composite laminated substrate according to any one of claims 1 to 7.