WO2021038771A1 - 光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及び光半導体装置 - Google Patents
光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及び光半導体装置 Download PDFInfo
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- WO2021038771A1 WO2021038771A1 PCT/JP2019/033793 JP2019033793W WO2021038771A1 WO 2021038771 A1 WO2021038771 A1 WO 2021038771A1 JP 2019033793 W JP2019033793 W JP 2019033793W WO 2021038771 A1 WO2021038771 A1 WO 2021038771A1
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- optical semiconductor
- resin composition
- thermosetting resin
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- semiconductor element
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- 238000009826 distribution Methods 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- NXPPAOGUKPJVDI-UHFFFAOYSA-N naphthalene-1,2-diol Chemical compound C1=CC=CC2=C(O)C(O)=CC=C21 NXPPAOGUKPJVDI-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical class OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- JIYNFFGKZCOPKN-UHFFFAOYSA-N sbb061129 Chemical compound O=C1OC(=O)C2C1C1C=C(C)C2C1 JIYNFFGKZCOPKN-UHFFFAOYSA-N 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 1
- UFDHBDMSHIXOKF-UHFFFAOYSA-N tetrahydrophthalic acid Natural products OC(=O)C1=C(C(O)=O)CCCC1 UFDHBDMSHIXOKF-UHFFFAOYSA-N 0.000 description 1
- 125000005590 trimellitic acid group Chemical class 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
Definitions
- the present invention relates to a thermosetting resin composition for light reflection, a substrate for mounting an optical semiconductor element, and an optical semiconductor device.
- Optical semiconductor devices that combine optical semiconductor elements such as LEDs (Light Emitting Diodes) with phosphors have high energy efficiency and long life, so they are used for outdoor displays, portable liquid crystal backlights, in-vehicle applications, etc. It is used for various purposes and its demand is expanding. Along with this, the brightness of LED devices is increasing, and it is required to prevent the junction temperature from rising due to an increase in the amount of heat generated by the element or the deterioration of the optical semiconductor device due to a direct increase in light energy.
- LEDs Light Emitting Diodes
- Patent Document 1 discloses a substrate for mounting an optical semiconductor device using a thermosetting resin composition having a high reflectance in the visible light to near-ultraviolet light region after resin curing. Further, Patent Document 2 discloses a member for mounting an optical semiconductor element with reduced light leakage.
- Substrates for mounting optical semiconductor devices applied in fields such as outdoor lighting and in-vehicle headlights are required to have higher light reflectivity and excellent mechanical properties such as bending strength.
- an object of the present invention is to provide a thermosetting resin composition for light reflection capable of forming a cured product having excellent light reflectivity and mechanical properties, a substrate for mounting an optical semiconductor device using the same, and an optical semiconductor device. And.
- the present invention relates to a thermosetting resin composition for light reflection, which contains an epoxy resin, a curing agent, an inorganic filler and a white pigment, and the inorganic filler contains inorganic hollow particles having a central particle size of 1 to 25 ⁇ m.
- the bulk density of the inorganic hollow particles may be 0.20 to 0.36 g / cm 3.
- the thickness of the outer shell of the inorganic hollow particles may be 0.4 to 1.3 ⁇ m.
- the pressure resistance strength of the inorganic hollow particles may be 100 MPa or more at 25 ° C.
- the white pigment may contain at least one selected from the group consisting of titanium oxide, zinc oxide, alumina, magnesium oxide, antimony oxide and zirconium oxide.
- the present invention relates to a substrate for mounting an optical semiconductor device, which comprises a cured product of the thermosetting resin composition for light reflection.
- the substrate for mounting an optical semiconductor element according to the present invention has a recess composed of a bottom surface and a wall surface, and the bottom surface of the recess may be a mounting portion for the optical semiconductor element.
- at least a part of the wall surface of the recess is a cured product of the thermosetting resin composition for light reflection.
- the substrate for mounting an optical semiconductor element according to the present invention includes a substrate, a first connection terminal and a second connection terminal provided on the substrate, and a first connection terminal and a second connection terminal. A cured product of the thermosetting resin composition for light reflection provided between them may be provided.
- the present invention relates to an optical semiconductor device having the above-mentioned optical semiconductor element mounting substrate and an optical semiconductor element mounted on the optical semiconductor element mounting substrate.
- thermosetting resin composition for light reflection capable of forming a cured product having excellent light reflectivity and mechanical properties, a substrate for mounting an optical semiconductor element, and an optical semiconductor device using the same. ..
- the numerical range indicated by using "-" indicates a range including the numerical values before and after "-" as the minimum value and the maximum value, respectively.
- the upper limit value or the lower limit value of the numerical range of one step may be replaced with the upper limit value or the lower limit value of the numerical range of another step.
- the upper limit value or the lower limit value of the numerical range may be replaced with the value shown in the examples.
- “A or B” may include either A or B, or both.
- the materials exemplified in the present specification may be used alone or in combination of two or more.
- (meth) acrylate means at least one of acrylate and the corresponding methacrylate.
- thermosetting resin composition for light reflection contains an epoxy resin, a curing agent, an inorganic filler and a white pigment, and the inorganic filler contains inorganic hollow particles having a central particle size of 1 to 25 ⁇ m. There is.
- epoxy resin an epoxy resin generally used in an epoxy resin molding material for encapsulating electronic parts can be used. Since the thermosetting resin composition according to the present embodiment contains an epoxy resin, it is possible to form a cured product having high thermal hardness and bending strength and improved mechanical properties.
- the epoxy resin for example, an epoxy resin obtained by epoxidizing phenols such as phenol novolac type epoxy resin and orthocresol novolac type epoxy resin and novolak resin of aldehydes; bisphenol A, bisphenol F, bisphenol S, alkyl-substituted bisphenol and the like.
- Glysidyl ether Glysidyl ether
- Glysidylamine type epoxy resin obtained by reacting polyamines such as diaminodiphenylmethane and isocyanuric acid with epichlorohydrin
- Linear aliphatic epoxy resin obtained by oxidizing olefin bonds with a peracid such as peracetic acid
- alicyclic Group epoxy resin can be mentioned.
- the epoxy resin may be used alone or in combination of two or more.
- the epoxy resins are diglycidyl isocyanurate, triglycidyl isocyanurate, bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, 1,2-cyclohexanedicarboxylic acid, 1,3-. It may contain a cyclohexanedicarboxylic acid or a dicarboxylic acid diglycidyl ester derived from a 1,4-cyclohexanedicarboxylic acid.
- the epoxy resin diglycidyl esters of dicarboxylic acids such as phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, methyltetrahydrophthalic acid, nadic acid and methylnadic acid are also suitable. It may contain glycidyl esters such as nuclear hydrogenated trimellitic acid and nuclear hydrogenated pyromellitic acid having an alicyclic structure in which the aromatic ring is hydrogenated.
- the epoxy resin may contain a polyorganosiloxane having an epoxy group, which is produced by heating a silane compound in the presence of an organic solvent, an organic base and water, hydrolyzing and condensing the silane compound.
- a commercially available product may be used as the epoxy resin.
- 3,4-epoxycyclohexylmethyl-3', 4'-epoxycyclohexanecarboxylate for example, the product names of Daicel Co., Ltd. "Selokiside 2021", “Selokiside 2021A” and “Selokiside 2021P", products of Dow Chemical Japan Co., Ltd.
- the names "ERL4221”, “ERL4221D” and "ERL4221E” are available.
- the bis (3,4-epoxycyclohexylmethyl) adipate for example, the product name "ERL4299" of Dow Chemical Japan Co., Ltd.
- the curing agent a curing agent generally used in epoxy resin molding materials for encapsulating electronic components can be used.
- the curing agent is not particularly limited as long as it can react with an epoxy resin to obtain a cured product, but a curing agent with less coloring is preferable, and a colorless or pale yellow curing agent is more preferable.
- the curing agent include an acid anhydride-based curing agent, an isocyanuric acid derivative-based curing agent, and a phenol-based curing agent.
- the curing agent may be used alone or in combination of two or more.
- Examples of the acid anhydride-based curing agent include phthalic anhydride, maleic anhydride, trimellitic anhydride, pyromellitic anhydride, hexahydrophthalic anhydride, tetrahydrophthalic anhydride, methylnadic anhydride, nadicic anhydride, and glutal anhydride.
- Examples thereof include acid, dimethylglutaric anhydride, diethylglutaric anhydride, succinic anhydride, phthalic anhydride, methyltetrahydrophthalic anhydride, and tetracarboxylic acid dianhydride represented by the following formula (1).
- Rx represents a divalent organic group
- n represents an integer of 1 to 10.
- the divalent organic group may be a divalent saturated hydrocarbon group having a saturated hydrocarbon ring, and examples of the saturated hydrocarbon include cyclobutane, cyclopentane, cyclohexane, cycloheptan, cyclooctane, norbornen, and di. Cyclopentadiene, adamantan, naphthalene hydride and biphenyl hydride can be mentioned.
- isocyanuric acid derivative examples include 1,3,5-tris (1-carboxymethyl) isocyanurate, 1,3,5-tris (2-carboxyethyl) isocyanurate, and 1,3,5-tris (3-carboxypropyl). ) Isocyanurate and 1,3-bis (2-carboxyethyl) isocyanurate.
- phenols such as phenol, cresol, resorcin, catechol, bisphenol A, bisphenol F, phenylphenol and aminophenol and / or naphthols such as ⁇ -naphthol, ⁇ -naphthol and dihydroxynaphthalene.
- phenols such as phenol, cresol, resorcin, catechol, bisphenol A, bisphenol F, phenylphenol and aminophenol and / or naphthols such as ⁇ -naphthol, ⁇ -naphthol and dihydroxynaphthalene.
- Formaldehyde, benzaldehyde, salicylaldehyde and other aldehydes are condensed or co-condensed under an acidic catalyst to obtain a novolak-type phenolic resin; phenols and / or naphthols and dimethoxyparaxylene or bis (methoxymethyl) biphenyl.
- Cyclopentadiene-type phenolic resins triphenylmethane-type phenolic resins; terpen-modified phenolic resins; paraxylylene and / or metaxylylene-modified phenolic resins; melamine-modified phenolic resins; and phenolic resins obtained by copolymerizing two or more of these.
- the content of the curing agent is 10 to 150 parts by mass, 50 to 130 parts by mass, or 60 to 120 parts by mass with respect to 100 parts by mass of the epoxy resin. Good.
- the mixing ratio of the curing agent is 0.5 to 2.0 equivalents of the active group (acid anhydride group or hydroxyl group) in the curing agent capable of reacting with the epoxy group with respect to 1 equivalent of the epoxy group in the epoxy resin. It may be 0.6 to 1.5 equivalents or 0.7 to 1.2 equivalents.
- the active group is 0.5 equivalent or more, the glass transition temperature of the cured product formed from the thermosetting resin composition becomes high, and a sufficient elastic modulus can be easily obtained.
- the active group is 2.0 equivalents or less, the strength after curing is unlikely to decrease.
- the white pigment is used to impart a white color tone to the cured product (molded product) obtained from the thermosetting resin composition according to the present embodiment, and is particularly molded by making the color tone highly white.
- the light reflectance of the body can be improved.
- the white pigment examples include rare earth oxides such as yttrium oxide, titanium oxide, zinc oxide, aluminum oxide (alumina), magnesium oxide, antimony oxide, zinc sulfate, and zirconium oxide. These may be used individually by 1 type or in combination of 2 or more type.
- the white pigment preferably contains at least one selected from the group consisting of titanium oxide, zinc oxide, alumina, magnesium oxide, antimony oxide and zirconium oxide, and titanium oxide and antimony oxide. It is more preferable to contain at least one selected from the group consisting of and zirconium oxide.
- the central particle size of the white pigment may be 0.05 to 10 ⁇ m, 0.08 to 8 ⁇ m, or 0.1 to 5 ⁇ m.
- the central particle size of the white pigment is 0.05 ⁇ m or more, the dispersibility becomes better, and when it is less than 10 ⁇ m, the light reflection characteristic of the cured product becomes better.
- the central particle size can be determined as the mass average value D50 (or median diameter) in the particle size distribution measurement by the laser light diffraction method.
- thermosetting resin composition according to the present embodiment contains inorganic hollow particles having a central particle size of 1 to 25 ⁇ m as an inorganic filler.
- Inorganic hollow particles are particles having voids inside. Since the inorganic hollow particles refract and reflect incident light on the surface and inner wall, a cured product having further improved light reflectivity and mechanical properties can be formed by using it in combination with a white pigment.
- the inorganic hollow particles include sodium silicate glass, aluminum silicate glass, sodium borosilicate glass and shirasu (white sand).
- the outer shell of the inorganic hollow particles is at least one selected from the group consisting of soda glass silicate, glass aluminum silicate, soda borosilicate glass, silas, crosslinked styrene resin and crosslinked acrylic resin. It is preferably composed of seed materials, and more preferably composed of at least one material selected from the group consisting of soda glass silicate, glass aluminum silicate, soda borosilicate glass and silas.
- the hollow particles can be easily dispersed uniformly when preparing the thermosetting resin composition.
- the central particle size of the inorganic hollow particles may be 5 ⁇ m or more or 10 ⁇ m or more. Further, when the central particle size of the inorganic hollow particles is 25 ⁇ m or less, the light reflection characteristics of the formed cured product can be easily improved.
- the central particle size of the inorganic hollow particles may be 22 ⁇ m or less.
- the thickness of the outer shell of the inorganic hollow particles is 0.4 to 1.3 ⁇ m, 0.45 to 1.2 ⁇ m, and 0.5 to 1.1 ⁇ m in order to further improve the mechanical properties of the thermosetting resin composition. , Or 0.55 to 1.0 ⁇ m.
- the bulk density of the inorganic hollow particles is 0.20 to 0.36 g / cm 3 , 0.25 to 0.35 g / cm 3 , or 0.26 to 0.34 g / cm in order to further improve the light reflectivity. It may be 3.
- the bulk density is a density calculated by filling a container having a certain volume with inorganic hollow particles and using the internal volume as the volume.
- the true density of inorganic hollow particles is 0.40 to 0.75 g / cm 3 , 0.45 to 0.70 g / cm 3 , or 0.50 to 0.50. It may be 0.65 g / cm 3.
- the true density can be measured according to ASTM D2840.
- the pressure resistance strength of the inorganic hollow particles may be 100 MPa or more, 110 MPa or more, 125 MPa or more, or 150 MPa or more at 25 ° C. In order to improve the moldability of the thermosetting resin composition, the pressure resistance strength of the inorganic hollow particles may be 500 MPa or less, 300 MPa or less, or 200 MPa or less at 25 ° C.
- the pressure resistance can be measured according to ASTM D3102.
- the content of the inorganic hollow particles according to the present embodiment is preferably 10 to 200 parts by mass and 30 to 180 parts by mass with respect to 100 parts by mass of the epoxy resin. More preferably, it is more preferably 60 to 150 parts by mass.
- the thermosetting resin composition according to the present embodiment may contain an inorganic filler other than the inorganic hollow particles from the viewpoint of improving moldability.
- the inorganic filler other than the inorganic hollow particles include quartz, fumed silica, precipitated silica, silicic anhydride, fused silica, crystalline silica, ultrafine powder atypical silica, barium sulfate, magnesium carbonate, barium carbonate, and water.
- Examples include aluminum oxide, magnesium hydroxide, potassium titanate and calcium silicate.
- the inorganic filler may contain fused silica.
- the central particle size of the molten silica may be 1 to 100 ⁇ m, 1 to 50 ⁇ m, or 1 to 40 ⁇ m from the viewpoint of improving the packing property with the white pigment.
- the thermosetting resin composition according to the present embodiment may contain a curing accelerator in order to accelerate the curing reaction of the epoxy resin.
- a curing accelerator include amine compounds, imidazole compounds, organophosphorus compounds, alkali metal compounds, alkaline earth metal compounds and quaternary ammonium salts.
- amine compounds, imidazole compounds, organophosphorus compounds, alkali metal compounds, alkaline earth metal compounds and quaternary ammonium salts it is preferable to use an amine compound, an imidazole compound or an organic phosphorus compound.
- the curing accelerator may be used alone or in combination of two or more.
- Examples of the amine compound include 1,8-diazabicyclo [5.4.0] undecene-7, triethylenediamine and tri-2,4,6-dimethylaminomethylphenol.
- Examples of the imidazole compound include 2-ethyl-4-methylimidazole.
- Examples of the organophosphorus compound include triphenylphosphine, tetraphenylphosphonium tetraphenylborate, tetra-n-butylphosphonium-o, o-diethylphosphologithioate, tetra-n-butylphosphonium-tetrafluoroborate and tetra-n. -Butylphosphonium-tetraphenylborate can be mentioned.
- the content of the curing accelerator in the thermosetting resin composition is 0.01 to 8 parts by mass, 0.1 to 5 parts by mass, or 0.3 to 4 parts by mass with respect to 100 parts by mass of the epoxy resin. It may be there.
- the content of the curing accelerator is 0.01 parts by mass or more, a sufficient curing promoting effect can be easily obtained, and when it is 8 parts by mass or less, discoloration of the cured product can be easily suppressed.
- a coupling agent may be added to the thermosetting resin composition in order to improve the adhesion between the inorganic filler and the epoxy resin.
- the coupling agent is not particularly limited, and examples thereof include a silane coupling agent and a titanate-based coupling agent.
- examples of the silane coupling agent include epoxysilane compounds, aminosilane compounds, thionicsilane compounds, vinylsilane compounds, acrylicsilane compounds and mercaptosilane compounds.
- the content of the coupling agent may be 5% by mass or less based on the total amount of the thermosetting resin composition.
- Additives such as an antioxidant, a mold release agent, and an ion scavenger may be added to the thermosetting resin composition according to the present embodiment, if necessary.
- thermosetting resin composition according to the present embodiment can be produced by uniformly dispersing and mixing the various components described above.
- the manufacturing means, conditions, etc. are not particularly limited.
- a general method for producing a thermosetting resin composition a method of kneading each component with a kneader, a roll, an extruder, a rake machine, or a planetary mixer that combines rotation and revolution can be mentioned. ..
- kneading each component it is preferable to knead each component in a molten state from the viewpoint of improving dispersibility.
- the kneading conditions may be appropriately determined depending on the type or blending amount of each component. For example, kneading at 15 to 100 ° C. for 5 to 40 minutes is preferable, and kneading at 20 to 100 ° C. for 10 to 30 minutes is more preferable. preferable.
- the kneading temperature is 15 ° C. or higher, each component can be easily kneaded and the dispersibility can be improved.
- the kneading temperature is 100 ° C. or lower, it is possible to prevent the epoxy resin from being cured due to the progress of high molecular weight of the epoxy resin during kneading.
- the kneading time is 5 minutes or more, a sufficient dispersion effect can be easily obtained.
- the kneading time is 40 minutes or less, it is possible to prevent the epoxy resin from being cured due to the progress of high molecular weight of the epoxy resin during kneading.
- thermosetting resin composition according to the present embodiment includes a substrate material for mounting an optical semiconductor device, an electrically insulating material, an optical semiconductor encapsulating material, an adhesive material, a coating material, and transfer molding, which require high light reflectivity and heat resistance. It is useful in various applications such as epoxy resin molding materials.
- thermosetting resin composition according to the present embodiment as an epoxy resin molding material for transfer molding will be described.
- the initial light reflectance of the cured product of the thermosetting resin composition according to the present embodiment at a wavelength of 460 nm is preferably 91% or more, preferably 92% or more. Is more preferable, and 93% or more is further preferable.
- the light reflectance at a wavelength of 460 nm after heat-treating the cured product at 150 ° C. for 168 hours is preferably 85% or more, more preferably 87% or more. It is more preferably 88% or more.
- the substrate for mounting an optical semiconductor element of the present embodiment has a recess formed by a bottom surface and a wall surface.
- the bottom surface of the recess is an optical semiconductor device mounting portion (optical semiconductor device mounting region), and at least a part of the wall surface of the recess, that is, the inner peripheral side surface of the recess is a cured product of the thermosetting resin composition for light reflection of the present embodiment. It consists of.
- FIG. 1 is a perspective view showing an embodiment of a substrate for mounting an optical semiconductor element.
- the substrate 110 for mounting an optical semiconductor element has a metal wiring 105 (first connection terminal and second connection terminal) formed with Ni / Ag plating 104 and a metal wiring 105 (first connection terminal and second connection).
- the metal wiring 105 provided with the insulating resin molded body 103'provided between the terminals) and the reflector 103, and formed with Ni / Ag plating 104, and the insulating resin molded body 103'and the reflector 103. It has an optical semiconductor element mounting region (recess) 200.
- the bottom surface of the recess 200 is composed of a metal wiring 105 on which Ni / Ag plating 104 is formed and an insulating resin molded body 103', and the wall surface of the recess 200 is composed of a reflector 103.
- the reflector 103 and the insulating resin molded body 103' are a molded body made of a cured product of the thermosetting resin composition for light reflection according to the above-described embodiment.
- FIG. 2 is a schematic view showing an embodiment of a process of manufacturing a substrate for mounting an optical semiconductor element.
- a step of forming a metal wiring 105 by a known method such as punching from a metal foil and etching, and applying Ni / Ag plating 104 by electroplating ((a) in FIG.
- the bottom surface of the recess 200 is made of a metal wiring 105 as a first connection terminal, a metal wiring 105 as a second connection terminal, and a cured product of a thermosetting resin composition for light reflection provided between them. It is composed of an insulating resin molded body 103'.
- the conditions for the transfer molding are a mold temperature of 170 to 200 ° C., more preferably 170 to 190 ° C., a molding pressure of 0.5 to 20 MPa, more preferably 2 to 8 MPa, and an aftercure temperature for 60 to 120 seconds. It is preferably 120 ° C. to 180 ° C. for 1 to 3 hours.
- the optical semiconductor device includes the optical semiconductor element mounting substrate and the optical semiconductor element mounted on the optical semiconductor element mounting substrate.
- the substrate for mounting the optical semiconductor element the optical semiconductor element provided in the recess of the substrate for mounting the optical semiconductor element, and the phosphor-containing seal that fills the recess and seals the optical semiconductor element.
- An optical semiconductor device including a stop resin portion can be mentioned.
- FIG. 3 is a perspective view showing an embodiment in which the optical semiconductor element 100 is mounted on the optical semiconductor element mounting substrate 110.
- the optical semiconductor element 100 is mounted at a predetermined position in the optical semiconductor element mounting region (recess) 200 of the optical semiconductor element mounting substrate 110, and is electrically connected to the metal wiring 105 by the bonding wire 102.
- To. 4 and 5 are schematic cross-sectional views showing an embodiment of an optical semiconductor device.
- the optical semiconductor device includes an optical semiconductor element mounting substrate 110, an optical semiconductor element 100 provided at a predetermined position in the recess 200 of the optical semiconductor element mounting substrate 110, and the recess 200.
- the metal wiring is provided with a sealing resin portion made of a transparent sealing resin 101 containing a phosphor 106 for sealing the optical semiconductor element, and the optical semiconductor element 100 and the Ni / Ag plating 104 are formed.
- the 105 is electrically connected to the bonding wire 102 or the solder bump 107.
- FIG. 6 is also a schematic cross-sectional view showing an embodiment of an optical semiconductor device.
- the LED element 300 is arranged at a predetermined position on the lead 304 on which the reflector 303 is formed via the die bonding material 306, and the LED element 300 and the lead 304 are electrically connected by the bonding wire 301.
- the LED element 300 is sealed by the transparent sealing resin 302 which is connected and contains the phosphor 305.
- thermosetting resin composition for light reflection of the present embodiment can be used as a light reflection coating agent.
- a copper-clad laminate, a substrate for mounting an optical semiconductor element, and an optical semiconductor element will be described.
- the copper-clad laminate according to the present embodiment includes a light-reflecting resin layer formed by using the above-mentioned thermosetting resin composition for light reflection, and a copper foil laminated on the light-reflecting resin layer. ..
- FIG. 7 is a schematic cross-sectional view showing a preferred embodiment of the copper-clad laminate.
- the copper-clad laminate 400 includes a base material 401, a light-reflecting resin layer 402 laminated on the base material 401, and a copper foil 403 laminated on the light-reflecting resin layer 402. , Is equipped.
- the light-reflecting resin layer 402 is formed by using the above-mentioned thermosetting resin composition for light reflection.
- the base material used for the copper-clad laminate can be used without particular limitation, and examples thereof include a resin laminate such as an epoxy resin laminate and a substrate for mounting an optical semiconductor.
- thermosetting resin composition for light reflection of the present embodiment is applied to the surface of the base material 401, the copper foil 403 is laminated, and the thermosetting resin composition is heat-pressurized and cured. It can be produced by forming a light-reflecting resin layer 402 made of.
- thermosetting resin composition As a method for applying the thermosetting resin composition to the base material 401, for example, a printing method, a die coating method, a curtain coating method, a spray coating method, a roll coating method, or the like can be used.
- the thermosetting resin composition may contain a solvent so as to facilitate application.
- a solvent it is preferable to set the total amount of the thermosetting resin composition excluding the solvent as the total amount of the above-mentioned compounding ratio of each component.
- the conditions for heating and pressurizing are not particularly limited, but for example, it is preferable to perform heating and pressurizing under the conditions of 130 to 180 ° C., 0.5 to 4 MPa, and 30 to 600 minutes.
- the copper-clad laminate 400 shown in FIG. 7 is obtained by laminating a light-reflecting resin layer 402 and a copper foil 403 on one side of the base material 401, but the copper-clad laminate has light on both sides of the base material 401.
- the reflective resin layer 402 and the copper foil 403 may be laminated respectively.
- the copper-clad laminate may be composed of only the light-reflecting resin layer 402 and the copper foil 403 without using the base material 401.
- the light-reflecting resin layer 402 serves as a base material.
- a glass cloth or the like impregnated with the thermosetting resin composition and cured can be used as the light-reflecting resin layer 402.
- FIG. 8 is a schematic cross-sectional view showing an example of an optical semiconductor device manufactured by using a copper-clad laminate.
- the optical semiconductor device 500 is a surface-mounted light emitting diode including an optical semiconductor element 410 and a transparent sealing resin 404 provided so as to seal the optical semiconductor element 410. ..
- the optical semiconductor element 410 is adhered to the copper foil 403 via the adhesive layer 408, and is electrically connected to the copper foil 403 by the bonding wire 409.
- a light-reflecting resin layer formed between a plurality of conductor members (connection terminals) on a substrate is formed by using the above-mentioned heat-curable resin composition for light reflection.
- Examples thereof include a substrate for mounting an optical semiconductor element.
- another embodiment of the optical semiconductor device is such that the optical semiconductor element is mounted on the above-mentioned substrate for mounting the optical semiconductor element.
- FIG. 9 is a schematic cross-sectional view showing a preferred embodiment of the optical semiconductor device.
- the optical semiconductor device 600 is formed between a base material 601 and a plurality of conductor members 602 formed on the surface of the base material 601 and a plurality of conductor members (connection terminals) 602.
- the optical semiconductor device 610 is mounted on a substrate for mounting an optical semiconductor device including the light reflecting resin layer 603 made of the thermocurable resin composition for light reflection, and the optical semiconductor device 610 is transparent so as to be sealed. It is a surface-mounted light emitting diode provided with a sealing resin 604.
- the optical semiconductor element 610 is adhered to the conductor member 602 via the adhesive layer 608, and is electrically connected to the conductor member 602 by the bonding wire 609.
- the base material used for the substrate for mounting the optical semiconductor element can be used without particular limitation, and examples thereof include a resin laminated board such as an epoxy resin laminated board.
- the conductor member 602 functions as a connection terminal, and can be formed by a known method such as a method of photo-etching a copper foil.
- the substrate for mounting an optical semiconductor element is formed by applying the thermosetting resin composition for light reflection between a plurality of conductor members 602 on the base material 601 and heat-curing the thermosetting resin composition for light reflection. It can be produced by forming the reflective resin layer 603.
- thermosetting resin composition for light reflection As a method for applying the thermosetting resin composition for light reflection to the base material 601, for example, a printing method, a die coating method, a curtain coating method, a spray coating method, a roll coating method, or the like can be used.
- the thermosetting resin composition for light reflection may contain a solvent so as to facilitate application.
- a solvent it is preferable to set the total amount of the resin composition excluding the solvent as the total amount of the above-mentioned compounding ratio of each component based on the total amount of the resin composition.
- the heating conditions for heat-curing the coating film of the thermosetting resin composition for light reflection are not particularly limited, but for example, heating may be performed under the conditions of 130 to 180 ° C. and 30 to 600 minutes.
- the resin component excessively adhered to the surface of the conductor member 602 is removed by buffing or the like to expose the circuit composed of the conductor member 602 and use it as a substrate for mounting an optical semiconductor element.
- the conductor member 602 may be subjected to a roughening treatment such as a redox treatment and a CZ treatment (manufactured by MEC Co., Ltd.).
- thermosetting resin composition for light reflection The following components were prepared in order to prepare the thermosetting resin compositions of Examples and Comparative Examples.
- each component was compounded, sufficiently kneaded with a mixer, and then melt-kneaded at 40 ° C. for 15 minutes with a mixing roll to obtain a kneaded product.
- the thermosetting resin compositions of Examples and Comparative Examples were prepared by cooling and pulverizing the kneaded product.
- thermosetting resin composition is subjected to transfer molding under the conditions of a molding die temperature of 180 ° C., a molding pressure of 6.9 MPa, and a curing time of 90 seconds, and then post-cured at 150 ° C. for 2 hours to test a thickness of 3.0 mm. Pieces were made. The light reflectance of the test piece at a wavelength of 460 nm was measured using an integrating sphere spectrophotometer V-750 (manufactured by JASCO Corporation).
- thermosetting resin composition for light reflection of the example can form a cured product (molded product) having an excellent balance of mechanical properties and light reflection.
- Optical semiconductor device 101 ... Encapsulating resin, 102 ... Bonding wire, 103 ... Reflector, 103'... Insulating resin molded body, 104 ... Ni / Ag plating, 105 ... Metal wiring, 106 ... Phosphor, 107 ... Solder Bump, 110 ... Optical semiconductor device mounting substrate, 150 ... Resin injection port, 151 ... Mold, 200 ... Optical semiconductor device mounting area, 300 ... LED element, 301 ... Bonding wire, 302 ... Sealing resin, 303 ... Reflector, 304 ... lead, 305 ... phosphor, 306 ... die bonding material, 400 ... copper-clad laminate, 401 ... base material, 402 ...
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Abstract
Description
本実施形態の光反射用熱硬化性樹脂組成物は、エポキシ樹脂、硬化剤、無機充填剤及び白色顔料を含有し、無機充填剤は、中心粒径が1~25μmの無機中空粒子を含んでいる。
エポキシ樹脂としては、電子部品封止用エポキシ樹脂成形材料で一般に使用されているエポキシ樹脂を用いることができる。本実施形態に係る熱硬化性樹脂組成物は、エポキシ樹脂を含有することで、熱時硬度及び曲げ強度が高く、機械的特性を向上した硬化物を形成することができる。エポキシ樹脂として、例えば、フェノールノボラック型エポキシ樹脂、オルソクレゾールノボラック型エポキシ樹脂等のフェノール類とアルデヒド類のノボラック樹脂をエポキシ化したエポキシ樹脂;ビスフェノールA、ビスフェノールF、ビスフェノールS、アルキル置換ビスフェノール等のジグリシジルエーテル;ジアミノジフェニルメタン、イソシアヌル酸等のポリアミンとエピクロルヒドリンとの反応により得られるグリシジルアミン型エポキシ樹脂;オレフィン結合を過酢酸等の過酸で酸化して得られる線状脂肪族エポキシ樹脂;及び脂環族エポキシ樹脂が挙げられる。エポキシ樹脂は、1種を単独で又は2種以上を組み合わせて用いてもよい。
硬化剤としては、電子部品封止用エポキシ樹脂成形材料で一般に使用されている硬化剤を用いることができる。硬化剤は、エポキシ樹脂と反応して硬化物が得られるものであれば、特に限定されないが、着色の少ない硬化剤が好ましく、無色又は淡黄色の硬化剤がより好ましい。硬化剤として、例えば、酸無水物系硬化剤、イソシアヌル酸誘導体系硬化剤及びフェノール系硬化剤が挙げられる。硬化剤は、1種を単独で又は2種以上を組み合わせて用いてもよい。
白色顔料は、本実施形態に係る熱硬化性樹脂組成物から得られる硬化物(成形体)に白色系の色調を付与するために用いられ、特にその色調を高度の白色とすることにより、成形体の光反射率を向上させることができる。
本実施形態に係る熱硬化性樹脂組成物は、無機充填剤として中心粒径が1~25μmの無機中空粒子を含有する。無機中空粒子は、内部に空隙部を有する粒子である。無機中空粒子は、入射光を表面及び内壁で屈折及び反射するため、白色顔料と併用することで、光反射性及び機械的特性をより一層向上した硬化物を形成することができる。
本実施形態に係る熱硬化性樹脂組成物は、成形性を向上する観点から、無機中空粒子以外の無機充填剤を含有してよい。無機中空粒子以外の無機充填剤としては、例えば、石英、ヒュームドシリカ、沈降性シリカ、無水ケイ酸、溶融シリカ、結晶性シリカ、超微粉無定型シリカ、硫酸バリウム、炭酸マグネシウム、炭酸バリウム、水酸化アルミニウム、水酸化マグネシウム、チタン酸カリウム及びケイ酸カルシウムが挙げられる。
本実施形態に係る熱硬化性樹脂組成物は、エポキシ樹脂の硬化反応を促進するために、硬化促進剤を含有してよい。硬化促進剤としては、例えば、アミン化合物、イミダゾール化合物、有機リン化合物、アルカリ金属化合物、アルカリ土類金属化合物及び第4級アンモニウム塩が挙げられる。これらの硬化促進剤の中でも、アミン化合物、イミダゾール化合物又は有機リン化合物を用いることが好ましい。硬化促進剤は、1種を単独で又は2種以上を組み合わせて使用してもよい。
熱硬化性樹脂組成物には、無機充填剤と、エポキシ樹脂との密着性を向上させるために、カップリング剤を添加してよい。カップリング剤としては、特に限定されないが、例えば、シランカップリング剤及びチタネート系カップリング剤が挙げられる。シランカップリング剤としては、例えば、エポキシシラン化合物、アミノシラン化合物、カチオニックシラン化合物、ビニルシラン化合物、アクリルシラン化合物及びメルカプトシラン化合物が挙げられる。カップリング剤の含有量は、熱硬化性樹脂組成物の全量を基準として、5質量%以下であってよい。
本実施形態の光半導体素子搭載用基板は、底面及び壁面から構成される凹部を有する。凹部の底面が光半導体素子搭載部(光半導体素子搭載領域)であり、凹部の壁面、すなわち凹部の内周側面の少なくとも一部が本実施形態の光反射用熱硬化性樹脂組成物の硬化物からなるものである。
本実施形態に係る光半導体装置は、上記光半導体素子搭載用基板と、当該光半導体素子搭載用基板に搭載された光半導体素子とを有する。より具体的な例として、上記光半導体素子搭載用基板と、光半導体素子搭載用基板の凹部内に設けられた光半導体素子と、凹部を充填して光半導体素子を封止する蛍光体含有封止樹脂部とを備える光半導体装置が挙げられる。
実施例及び比較例の熱硬化性樹脂組成物を作製するために、以下の成分を準備した。
日産化学工業株式会社製の商品名「TEPIC-S」(トリスグリシジルイソシアヌレート、エポキシ当量:100)
(硬化剤)
式(1)のテトラカルボン酸二無水物(Rx:シクロヘキサン環、融点:40℃)
新日本理化株式会社製の商品名「リカシッドHH」(ヘキサヒドロ無水フタル酸)
新日本理化株式会社製の商品名「リカシッドTH」(1,2,3,6-テトラヒドロ無水フタル酸)
(硬化促進剤)
日本化学工業株式会社製の商品名「PX-4PB」(テトラブチルホスホニウムテトラフェニルボラート)
(カップリング剤)
エポキシシラン化合物(3-グリシドキシプロピルトリメトキシシラン)
日油株式会社製の商品名「ZNST」(ジンクステアレート)
(添加剤)
株式会社ADEKA製の商品名「アデカスタブ AO-60」(ヒンダードフェノール系酸化防止剤)
株式会社ADEKA製の商品名「アデカスタブ PEP-36A」(ホスファイト系酸化防止剤)
Gelest製の商品名「DBL-C32」(シリコーン系添加剤)
スリーエムジャパン株式会社製の商品名「iM16K」(中心粒径:20μm、シェル層の厚み:0.66μm、かさ密度:0.27g/cm3、耐圧強度:110MPa)
スリーエムジャパン株式会社製の商品名「iM30K」(中心粒径:18μm、シェル層の厚み:0.61μm、かさ密度:0.33g/cm3、耐圧強度:186MPa)
スリーエムジャパン株式会社製の商品名「S60HS」(中心粒径:30μm、シェル層の厚み:1.46μm、かさ密度:0.38g/cm3、耐圧強度:124MPa)
(シリカ)
デンカ株式会社製の商品名「FP-950」(溶融シリカ)
株式会社アドマテックス製、商品名「SO-25R」(溶融シリカ)
富士シリシア化学株式会社製の商品名「サイロホービック702」(疎水性微粉末シリカ)
(白色顔料)
酸化チタン(中心粒径0.2μm)
(曲げ強度)
熱硬化性樹脂組成物を、成形金型温度180℃、成形圧力6.9MPa、硬化時間90秒の条件でトランスファー成形することによって、10mm×70mm×3mmの試験片を作製した。曲げ試験機(株式会社エー・アンド・デイの製品名「テンシロン」)を用いて、JIS K 6911に準拠して試験片の曲げ強度を25℃で測定した。
熱硬化性樹脂組成物を、成形金型温度180℃、成形圧力6.9MPa、硬化時間90秒の条件でトランスファー成形した後、150℃で2時間ポストキュアすることによって、厚み3.0mmの試験片を作製した。積分球型分光光度計V-750型(日本分光株式会社製)を用いて、波長460nmにおける試験片の光反射率を測定した。
Claims (9)
- エポキシ樹脂、硬化剤、無機充填剤及び白色顔料を含有し、
前記無機充填剤が、中心粒径が1~25μmの無機中空粒子を含む、光反射用熱硬化性樹脂組成物。 - 前記無機中空粒子のかさ密度が、0.20~0.36g/cm3である、請求項1に記載の熱硬化性樹脂組成物。
- 前記無機中空粒子の外殻の厚みが、0.4~1.3μmである、請求項1又は2に記載の熱硬化性樹脂組成物。
- 前記無機中空粒子の耐圧強度が、25℃で100MPa以上である、請求項1~3のいずれか一項に記載の熱硬化性樹脂組成物。
- 前記白色顔料が、酸化チタン、酸化亜鉛、アルミナ、酸化マグネシウム、酸化アンチモン及び酸化ジルコニウムからなる群より選ばれる少なくとも1種を含む、請求項1~4のいずれか一項に記載の熱硬化性樹脂組成物。
- 請求項1~5のいずれか一項に記載の光反射用熱硬化性樹脂組成物の硬化物を備える、光半導体素子搭載用基板。
- 底面及び壁面から構成される凹部を有し、当該凹部の前記底面が光半導体素子の搭載部であり、
前記凹部の前記壁面の少なくとも一部が、請求項1~5のいずれか一項に記載の光反射用熱硬化性樹脂組成物の硬化物からなる、光半導体素子搭載用基板。 - 基板と、当該基板上に設けられた第1の接続端子及び第2の接続端子とを備え、
前記第1の接続端子と前記第2の接続端子との間に、請求項1~5のいずれか一項に記載の光反射用熱硬化性樹脂組成物の硬化物を有する、光半導体素子搭載用基板。 - 請求項6~8のいずれか一項に記載の光半導体素子搭載用基板と、当該光半導体素子搭載用基板に搭載された光半導体素子と、を有する、光半導体装置。
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JP2009129801A (ja) * | 2007-11-27 | 2009-06-11 | Denki Kagaku Kogyo Kk | 金属ベース回路基板 |
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JP2015152643A (ja) * | 2014-02-10 | 2015-08-24 | パナソニックIpマネジメント株式会社 | 光反射体用熱硬化性樹脂組成物、光反射体、及び発光装置 |
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WO2017131152A1 (ja) * | 2016-01-27 | 2017-08-03 | クラスターテクノロジー株式会社 | 白色リフレクター用硬化性エポキシ樹脂組成物及びその硬化物、光半導体素子搭載用基板、並びに光半導体装置 |
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JP2012030476A (ja) * | 2010-07-30 | 2012-02-16 | Sumitomo Chemical Co Ltd | 液晶ポリエステル成形体の製造方法 |
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JP2011219634A (ja) * | 2010-04-09 | 2011-11-04 | Hitachi Chem Co Ltd | 光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及びその製造方法、並びに光半導体装置 |
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JP2024045302A (ja) | 2024-04-02 |
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