WO2023032860A1 - 硬化性樹脂組成物及び電子部品装置 - Google Patents
硬化性樹脂組成物及び電子部品装置 Download PDFInfo
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- WO2023032860A1 WO2023032860A1 PCT/JP2022/032271 JP2022032271W WO2023032860A1 WO 2023032860 A1 WO2023032860 A1 WO 2023032860A1 JP 2022032271 W JP2022032271 W JP 2022032271W WO 2023032860 A1 WO2023032860 A1 WO 2023032860A1
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- WUOIAOOSKMHJOV-UHFFFAOYSA-N ethyl(diphenyl)phosphane Chemical compound C=1C=CC=CC=1P(CC)C1=CC=CC=C1 WUOIAOOSKMHJOV-UHFFFAOYSA-N 0.000 description 1
- 125000004672 ethylcarbonyl group Chemical group [H]C([H])([H])C([H])([H])C(*)=O 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- ARRNBPCNZJXHRJ-UHFFFAOYSA-M hydron;tetrabutylazanium;phosphate Chemical compound OP(O)([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC ARRNBPCNZJXHRJ-UHFFFAOYSA-M 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 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
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004206 montan acid ester Substances 0.000 description 1
- 235000013872 montan acid ester Nutrition 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- INJVFBCDVXYHGQ-UHFFFAOYSA-N n'-(3-triethoxysilylpropyl)ethane-1,2-diamine Chemical compound CCO[Si](OCC)(OCC)CCCNCCN INJVFBCDVXYHGQ-UHFFFAOYSA-N 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000006678 phenoxycarbonyl group Chemical group 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- MCZDHTKJGDCTAE-UHFFFAOYSA-M tetrabutylazanium;acetate Chemical compound CC([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC MCZDHTKJGDCTAE-UHFFFAOYSA-M 0.000 description 1
- GTCDARUMAMVCRO-UHFFFAOYSA-M tetraethylazanium;acetate Chemical compound CC([O-])=O.CC[N+](CC)(CC)CC GTCDARUMAMVCRO-UHFFFAOYSA-M 0.000 description 1
- PSEQWFPWQRZBOO-UHFFFAOYSA-M tetrahexylazanium;benzoate Chemical compound [O-]C(=O)C1=CC=CC=C1.CCCCCC[N+](CCCCCC)(CCCCCC)CCCCCC PSEQWFPWQRZBOO-UHFFFAOYSA-M 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
- USFPINLPPFWTJW-UHFFFAOYSA-N tetraphenylphosphonium Chemical compound C1=CC=CC=C1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 USFPINLPPFWTJW-UHFFFAOYSA-N 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- DHWBYAACHDUFAT-UHFFFAOYSA-N tricyclopentylphosphane Chemical compound C1CCCC1P(C1CCCC1)C1CCCC1 DHWBYAACHDUFAT-UHFFFAOYSA-N 0.000 description 1
- ZYMHKOVQDOFPHH-UHFFFAOYSA-N trimethoxy(oct-1-enyl)silane Chemical compound CCCCCCC=C[Si](OC)(OC)OC ZYMHKOVQDOFPHH-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- QYJYJTDXBIYRHH-UHFFFAOYSA-N trimethoxy-[8-(oxiran-2-ylmethoxy)octyl]silane Chemical compound C(C1CO1)OCCCCCCCC[Si](OC)(OC)OC QYJYJTDXBIYRHH-UHFFFAOYSA-N 0.000 description 1
- IDXDWPWXHTXJMZ-UHFFFAOYSA-N tris(2,4,6-trimethylphenyl)phosphane Chemical compound CC1=CC(C)=CC(C)=C1P(C=1C(=CC(C)=CC=1C)C)C1=C(C)C=C(C)C=C1C IDXDWPWXHTXJMZ-UHFFFAOYSA-N 0.000 description 1
- XDHRVAHAGMMFMC-UHFFFAOYSA-N tris(2,4-dimethylphenyl)phosphane Chemical compound CC1=CC(C)=CC=C1P(C=1C(=CC(C)=CC=1)C)C1=CC=C(C)C=C1C XDHRVAHAGMMFMC-UHFFFAOYSA-N 0.000 description 1
- RERMPCBBVZEPBS-UHFFFAOYSA-N tris(2,6-dimethylphenyl)phosphane Chemical compound CC1=CC=CC(C)=C1P(C=1C(=CC=CC=1C)C)C1=C(C)C=CC=C1C RERMPCBBVZEPBS-UHFFFAOYSA-N 0.000 description 1
- DAGQYUCAQQEEJD-UHFFFAOYSA-N tris(2-methylpropyl)phosphane Chemical compound CC(C)CP(CC(C)C)CC(C)C DAGQYUCAQQEEJD-UHFFFAOYSA-N 0.000 description 1
- CKKFLUXMIUUGAW-UHFFFAOYSA-N tris(2-propan-2-ylphenyl)phosphane Chemical compound CC(C)C1=CC=CC=C1P(C=1C(=CC=CC=1)C(C)C)C1=CC=CC=C1C(C)C CKKFLUXMIUUGAW-UHFFFAOYSA-N 0.000 description 1
- GDKAFTKCUOBEDW-UHFFFAOYSA-N tris(2-tert-butylphenyl)phosphane Chemical compound CC(C)(C)C1=CC=CC=C1P(C=1C(=CC=CC=1)C(C)(C)C)C1=CC=CC=C1C(C)(C)C GDKAFTKCUOBEDW-UHFFFAOYSA-N 0.000 description 1
- RYXYUARTMQUYKV-UHFFFAOYSA-N tris(4-butylphenyl)phosphane Chemical compound C1=CC(CCCC)=CC=C1P(C=1C=CC(CCCC)=CC=1)C1=CC=C(CCCC)C=C1 RYXYUARTMQUYKV-UHFFFAOYSA-N 0.000 description 1
- SPNVODOGUAUMCA-UHFFFAOYSA-N tris(4-ethoxy-2,6-dimethylphenyl)phosphane Chemical compound CC1=CC(OCC)=CC(C)=C1P(C=1C(=CC(OCC)=CC=1C)C)C1=C(C)C=C(OCC)C=C1C SPNVODOGUAUMCA-UHFFFAOYSA-N 0.000 description 1
- LQEKTSMTEYLBLJ-UHFFFAOYSA-N tris(4-ethoxyphenyl)phosphane Chemical compound C1=CC(OCC)=CC=C1P(C=1C=CC(OCC)=CC=1)C1=CC=C(OCC)C=C1 LQEKTSMTEYLBLJ-UHFFFAOYSA-N 0.000 description 1
- PCCAGZSOGFNURV-UHFFFAOYSA-N tris(4-ethylphenyl)phosphane Chemical compound C1=CC(CC)=CC=C1P(C=1C=CC(CC)=CC=1)C1=CC=C(CC)C=C1 PCCAGZSOGFNURV-UHFFFAOYSA-N 0.000 description 1
- UYUUAUOYLFIRJG-UHFFFAOYSA-N tris(4-methoxyphenyl)phosphane Chemical compound C1=CC(OC)=CC=C1P(C=1C=CC(OC)=CC=1)C1=CC=C(OC)C=C1 UYUUAUOYLFIRJG-UHFFFAOYSA-N 0.000 description 1
- WXAZIUYTQHYBFW-UHFFFAOYSA-N tris(4-methylphenyl)phosphane Chemical compound C1=CC(C)=CC=C1P(C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 WXAZIUYTQHYBFW-UHFFFAOYSA-N 0.000 description 1
- JTOQWGJGVSYTTN-UHFFFAOYSA-N tris(4-propylphenyl)phosphane Chemical compound C1=CC(CCC)=CC=C1P(C=1C=CC(CCC)=CC=1)C1=CC=C(CCC)C=C1 JTOQWGJGVSYTTN-UHFFFAOYSA-N 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- UIXPTCZPFCVOQF-UHFFFAOYSA-N ubiquinone-0 Chemical compound COC1=C(OC)C(=O)C(C)=CC1=O UIXPTCZPFCVOQF-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- 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
Definitions
- the present disclosure relates to curable resin compositions and electronic component devices.
- these packages are mounted differently than pin insertion packages. That is, in the pin-insertion type package, the pins are inserted into the wiring board and then soldered from the rear surface of the wiring board, so the package is not directly exposed to high temperatures.
- surface-mounted ICs are temporarily fixed to the surface of the wiring board and processed by a solder bath, a reflow device, or the like, so the package is directly exposed to the soldering temperature (reflow temperature).
- reflow temperature soldering temperature
- the package absorbs moisture
- the absorbed moisture evaporates during reflow, and the generated vapor pressure acts as peeling stress, causing peeling between the sealing material and the supporting member such as the element or lead frame. This may cause package cracks, poor electrical characteristics, and the like. Therefore, there is a demand for the development of a sealing material that is excellent in adhesion to a supporting member and, in turn, excellent in solder heat resistance (reflow resistance).
- a curable resin composition containing an epoxy resin and a phenol-based curing agent is known as a sealing material.
- Patent Document 1 There is room for further improvement in the reflow resistance of the curable resin composition proposed in Patent Document 1.
- the present disclosure has been made in view of the above situation, and the problem to be solved is to provide a curable resin composition having excellent reflow resistance and an element sealed with this curable resin composition.
- An object of the present invention is to provide an electronic component device.
- ⁇ 2> In a chart obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition, the vertical axis is tan ⁇ and the horizontal axis is the temperature of 30 ° C. to 260 ° C., 70 ° C., 80 A curable resin composition, wherein the sum of tan ⁇ values at each temperature of °C and 90 °C is more than 0.600.
- the maximum value of tan ⁇ in the above chart is 100
- the value of tan ⁇ at at least one of ⁇ 10° C. at which tan ⁇ is maximum is greater than 60, according to the above ⁇ 1> or ⁇ 2> A curable resin composition as described.
- ⁇ 4> Any of the above ⁇ 1> to ⁇ 3>, wherein the storage viscoelasticity at 260 ° C. obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition is 450 MPa or less. 1.
- the curable resin composition according to one. ⁇ 5> The above ⁇ 1 containing an epoxy resin and a phenolic curing agent at an equivalent ratio of the phenolic hydroxyl group of the phenolic curing agent to the epoxy group of the epoxy resin of 0.5 or more and less than 1.0 > The curable resin composition according to any one of ⁇ 4>.
- ⁇ 6> An electronic component device comprising an element and a resin cured product of the curable resin composition according to any one of ⁇ 1> to ⁇ 5> for sealing the element.
- an electronic component device including a curable resin composition having excellent reflow resistance and an element sealed with this curable resin composition.
- the numerical range indicated using “-" includes the numerical values before and after "-" as the minimum and maximum values, respectively.
- the upper limit or lower limit of one numerical range may be replaced with the upper or lower limit of another numerical range described step by step.
- the upper or lower limits of the numerical ranges may be replaced with the values shown in Synthetic Examples.
- each component may contain multiple types of applicable compounds. When there are multiple types of substances corresponding to each component in the composition, the content rate or content of each component is the total content rate or content of the multiple types of substances present in the composition unless otherwise specified. means quantity.
- a plurality of types of particles corresponding to each component in the present disclosure may be contained.
- the particle size of each component means a value for a mixture of the multiple types of particles present in the composition, unless otherwise specified.
- the term "laminate" refers to stacking layers, and two or more layers may be bonded or two or more layers may be detachable.
- the notation without describing substitution and unsubstitution includes not only those not having substituents but also those having substituents.
- the number of structural units represents an integer value for a single molecule, but represents a rational number which is an average value for an aggregate of multiple types of molecules.
- the number of carbon atoms means the total number of carbon atoms contained in a group as a whole, and when the group does not have a substituent, it represents the number of carbon atoms forming the skeleton of the group. When has a substituent, it represents the total sum of the number of carbon atoms forming the skeleton of the group plus the number of carbon atoms in the substituent.
- the dynamic viscoelasticity measurement of the resin cured product of the curable resin composition can be performed using a dynamic viscoelasticity measuring device (for example, DMA8000 manufactured by PerkinElmer).
- a dynamic viscoelasticity measuring device for example, DMA8000 manufactured by PerkinElmer.
- test mode 3-point bending mode
- measurement temperature 25 ° C.
- the resin cured product was produced by molding the curable resin composition using a transfer molding machine under the conditions of a mold temperature of 175°C, a molding pressure of 8.3 MPa, and a curing time of 120 seconds. By carrying out curing.
- the coefficient of thermal expansion (CTE) of the cured resin of the curable resin composition is measured using a thermomechanical analyzer, for example, on a cured resin of ⁇ 4 mm ⁇ 20 mm. .
- the production of the resin cured product is as described above.
- the measurement conditions are a load of 15 g, a measurement temperature of ⁇ 50° C. to 220° C., and a heating rate of 5° C./min.
- TMA/SS6100 manufactured by Seiko Instruments Inc. can be used.
- the weight average molecular weight (Mw) and number average molecular weight (Mn) are measured using the following GPC measurement device under the following measurement conditions, and converted using a standard polystyrene calibration curve.
- a calibration curve was prepared using a set of 5 samples (“PStQuick MP-H” and “PStQuick B”, manufactured by Tosoh Corporation) as standard polystyrene.
- PStQuick MP-H and “PStQuick B”, manufactured by Tosoh Corporation
- the molecular weight determined from the chemical structure of the compound is adopted as the Mw or Mn of the compound.
- GPS measuring device high-speed GPC device “HCL-8320GPC”, detector is differential refractometer or UV, manufactured by Tosoh Corporation ⁇ Column: column TSKgel SuperMultipore HZ-H (column length: 15 cm, column inner diameter: 4.6 mm), Manufactured by Tosoh Corporation (measurement conditions) ⁇ Solvent: Tetrahydrofuran (THF) ⁇ Measurement temperature: 40°C ⁇ Flow rate: 0.35 mL/min ⁇ Sample concentration: 10 mg/THF5 mL ⁇ Injection volume: 20 ⁇ L
- the curable resin composition according to the first aspect is obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition.
- the temperature at which tan ⁇ is maximum is less than 120 ° C.
- the maximum value of tan ⁇ is greater than 0.400
- 220 The sum of the tan ⁇ values at each temperature of °C, 230 °C, 240 °C and 250 °C is greater than 0.400.
- the curable resin composition according to the first aspect has excellent reflow resistance.
- the vertical axis is tan ⁇ and the horizontal axis is the temperature of 30 ° C. to 260 ° C.
- tan ⁇ is the maximum
- the maximum value of tan ⁇ is greater than 0.400
- the temperatures of 220°C, 230°C, 240°C and 250°C According to the curable resin composition according to the first aspect, in which the sum of the tan ⁇ values in is more than 0.400, the internal stress of the cured resin that occurs during reflow tends to be relaxed.
- the temperature at which tan ⁇ becomes maximum is preferably less than 110°C.
- the lower limit of the temperature at which tan ⁇ is maximized is not particularly limited, it can be, for example, 50° C. or higher.
- the maximum value of tan ⁇ is preferably more than 0.410.
- the upper limit of the maximum value of tan ⁇ is not particularly limited, it can be, for example, 1.0 or less.
- the upper limit of the total tan ⁇ at each temperature of 220°C, 230°C, 240°C and 250°C is not particularly limited. can be, for example, 2.0 or less.
- the value of tan ⁇ at at least any temperature of -10 ° C. at which tan ⁇ becomes maximum is 60 It is preferably greater than, more preferably greater than 63, and even more preferably greater than 65.
- the sum of tan ⁇ values at each temperature of 70°C, 80°C and 90°C is preferably more than 0.600. More preferably above 700.
- the upper limit of the sum of tan ⁇ values at temperatures of 70° C., 80° C. and 90° C. is not particularly limited, but can be, for example, 2.0 or less.
- the storage viscoelasticity at 260 ° C. obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition is It is preferably 450 MPa or less, more preferably 435 MPa or less, and even more preferably 420 MPa or less.
- the lower limit of the storage modulus is not particularly limited, it can be, for example, 150 MPa or more.
- the thermal expansion coefficient (CTE1) below the glass transition temperature of the resin cured product of the curable resin composition according to the first aspect obtained by thermomechanical analysis measurement is 15 ppm / ° C. or less from the viewpoint of followability to the support member. is preferred, 13 ppm/°C or less is more preferred, and 10 ppm/°C or less is even more preferred.
- the lower limit of the coefficient of thermal expansion is not particularly limited, it can be set to 3 ppm/°C, for example.
- the coefficient of thermal expansion (CTE2) above the glass transition temperature is preferably 10 ppm/° C. to 45 ppm/° C., more preferably 12 ppm/° C. to 40 ppm/° C., more preferably 15 ppm/° C. to 38 ppm/° C. °C is more preferred.
- the curable resin composition according to the first aspect contains an epoxy resin and a phenolic curing agent such that the equivalent ratio of the phenolic hydroxyl group of the phenolic curing agent to the epoxy group of the epoxy resin is 0.5. It is preferably contained at 5 or more and less than 1.0.
- the equivalent ratio of the phenolic hydroxyl group (active hydrogen) of the phenolic curing agent to the epoxy group of the epoxy resin is the curability 1 H-NMR of the resin composition is measured, and it can be determined from the integral ratio of the protons of the epoxy group and the protons of the phenolic hydroxyl group. 1 H-NMR of the curable resin composition is measured under the following conditions.
- the curable resin composition according to the first aspect can contain an epoxy resin.
- the type of epoxy resin is not particularly limited as long as it has two or more epoxy groups in one molecule.
- the linear polysiloxane compound is not included in the epoxy resin. Specific examples of epoxy resins are described below, but are not limited thereto.
- At least one phenol selected from the group consisting of phenol compounds such as phenol, cresol, xylenol, resorcinol, catechol, bisphenol A and bisphenol F, and naphthol compounds such as ⁇ -naphthol, ⁇ -naphthol and dihydroxynaphthalene.
- a novolak type epoxy resin phenol novolac type epoxy resin, ortho-cresol novolak-type epoxy resins, etc.
- epoxidized triphenylmethane-type phenolic resins obtained by condensation or co-condensation of the above phenolic compounds and aromatic aldehyde compounds such as benzaldehyde and salicylaldehyde in the presence of an acidic catalyst.
- a triphenylmethane type epoxy resin a copolymer type epoxy resin obtained by epoxidizing a novolak resin obtained by co-condensing the above phenol compound and naphthol compound with an aldehyde compound in the presence of an acidic catalyst; bisphenol A, bisphenol diphenylmethane-type epoxy resins that are diglycidyl ethers such as F; biphenyl-type epoxy resins that are diglycidyl ethers of alkyl-substituted or unsubstituted biphenols; stilbene-type epoxy resins that are diglycidyl ethers of stilbene-based phenol compounds; Sulfur atom-containing epoxy resins that are diglycidyl ethers; Epoxy resins that are glycidyl ethers of alcohols such as butanediol, polyethylene glycol and polypropylene glycol; Glycidyl polyvalent carboxylic acid compounds such as phthalic acid, isophthalic acid and
- co-condensation resins of dicyclopentadiene and phenol compounds Dicyclopentadiene type epoxy resin which is obtained by epoxidizing the; vinylcyclohexene diepoxide obtained by epoxidizing the olefin bond in the molecule, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate, 2- (3,4-epoxy)cyclohexyl-5,5-spiro(3 ,4-epoxy)cyclohexane-m-dioxane and other alicyclic epoxy resins; para-xylylene-modified epoxy resins that are glycidyl ethers of para-xylylene-modified phenol resins; meta-xylylene-modified epoxy resins that are glycidyl ethers of meta-xylylene-modified phenol resins; terpene-modified phenol
- the biphenyl-type epoxy resin is not particularly limited as long as it is an epoxy resin having a biphenyl skeleton.
- an epoxy resin represented by the following general formula (II) is preferred.
- R 8 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aromatic group having 4 to 18 carbon atoms, all of which may be the same or different.
- n is an average value and represents an integer of 0-10.
- the stilbene-type epoxy resin is not particularly limited as long as it is an epoxy resin having a stilbene skeleton.
- an epoxy resin represented by the following general formula (III) is preferred.
- R 9 and R 10 each represent a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, and may be the same or different.
- n is an average value and represents an integer of 0-10.
- the diphenylmethane-type epoxy resin is not particularly limited as long as it is an epoxy resin having a diphenylmethane skeleton.
- an epoxy resin represented by the following general formula (IV) is preferred.
- R 11 and R 12 each represent a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, and may be the same or different.
- n is an average value and represents an integer of 0-10.
- the sulfur atom-containing type epoxy resin is not particularly limited as long as it is an epoxy resin containing sulfur atoms.
- examples thereof include epoxy resins represented by the following general formula (V).
- R 13 represents a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- n is an average value and represents an integer of 0-10.
- the novolak type epoxy resin is not particularly limited as long as it is an epoxy resin obtained by epoxidizing a novolak type phenol resin.
- R 14 represents a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- R 15 represents a monovalent organic group having 1 to 18 carbon atoms, all of which may be the same or different.
- i each independently represents an integer of 0 to 3;
- n is an average value and represents an integer of 0-10.
- the dicyclopentadiene type epoxy resin is not particularly limited as long as it is an epoxy resin obtained by epoxidizing a compound having a dicyclopentadiene skeleton as a raw material.
- R 16 represents a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- i each independently represents an integer of 0 to 3;
- n is an average value and represents an integer of 0-10.
- the triphenylmethane-type epoxy resin is not particularly limited as long as it is an epoxy resin made from a compound having a triphenylmethane skeleton.
- R 17 and R 18 each represent a monovalent organic group having 1 to 18 carbon atoms, and may be the same or different.
- Each i independently represents an integer of 0 to 3
- each k independently represents an integer of 0 to 4.
- n is an average value and represents an integer of 0-10.
- the copolymer type epoxy resin obtained by epoxidizing a novolac resin obtained from a naphthol compound, a phenolic compound, and an aldehyde compound is not particularly limited as long as it is an epoxy resin made from a compound having a naphthol skeleton and a compound having a phenolic skeleton.
- an epoxy resin obtained by glycidyl-etherifying a novolac-type phenol resin using a compound having a naphthol skeleton and a compound having a phenol skeleton is preferable, and an epoxy resin represented by the following general formula (IX) is more preferable.
- R 19 to R 21 represent monovalent organic groups having 1 to 18 carbon atoms, and may be the same or different.
- Each i independently represents an integer of 0 to 3
- each j independently represents an integer of 0 to 2
- each k independently represents an integer of 0 to 4.
- l and m are average values, numbers from 0 to 10, and (l+m) shows numbers from 0 to 10.
- the terminal of the epoxy resin represented by formula (IX) is either one of formula (IX-1) or (IX-2) below.
- Definitions of R 19 to R 21 , i, j and k in formulas (IX-1) and (IX-2) are the same as definitions of R 19 to R 21 , i, j and k in formula (IX).
- n is 1 (when linked via a methylene group) or 0 (when not linked via a methylene group).
- the epoxy resin represented by the general formula (IX) includes a random copolymer having l structural units and m structural units at random, an alternating copolymer having alternating structural units, and a copolymer having regularly , a block copolymer having a block shape, and the like. Any one of these may be used alone, or two or more may be used in combination.
- the aralkyl-type epoxy resin is composed of at least one selected from the group consisting of phenol compounds such as phenol and cresol, and naphthol compounds such as naphthol and dimethylnaphthol, and dimethoxyparaxylene, bis(methoxymethyl)biphenyl or derivatives thereof.
- phenol compounds such as phenol and cresol
- naphthol compounds such as naphthol and dimethylnaphthol
- dimethoxyparaxylene bis(methoxymethyl)biphenyl or derivatives thereof.
- an epoxy resin made from a synthesized phenol resin.
- R 38 represents a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, all of which may be the same or different.
- R 37 , R 39 to R 41 each represent a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- i is each independently an integer of 0 to 3
- j is each independently an integer of 0 to 2
- k is each independently an integer of 0 to 4
- l is each independently an integer of 0 to 4 show.
- n is an average value, each independently an integer of 0 to 10;
- R 8 to R 21 and R 37 to R 41 in general formulas (II) to (XI) above “all of which may be the same or different” means, for example, 8 to R 41 in formula (II). It means that all 88 R 8 may be the same or different.
- Other R 9 to R 21 and R 37 to R 41 also mean that the respective numbers contained in the formula may all be the same or different.
- R 8 to R 21 and R 37 to R 41 may be the same or different.
- all of R 9 and R 10 may be the same or different.
- the monovalent organic group having 1 to 18 carbon atoms in general formulas (III) to (XI) is preferably an alkyl group or an aryl group.
- n in the above general formulas (II) to (XI) is an average value, and each independently preferably ranges from 0 to 10.
- n is 10 or less, the melt viscosity of the resin component does not become too high, and the viscosity decreases during melt molding of the curable resin composition, resulting in poor filling and bonding wires (gold wires that connect elements and leads). There is a tendency that the occurrence of deformation, etc., is suppressed.
- n is set in the range of 0-4.
- the epoxy resin is a copolymerized epoxy resin having a structural unit derived from alkylphenol and a structural unit derived from alkoxynaphthalene (hereinafter referred to as a specific copolymerized epoxy resin) is preferably included.
- Structural units derived from alkylphenols include structural units (a) below.
- each R 1 A independently represents a monovalent alkyl group having 1 to 18 carbon atoms, preferably a monovalent alkyl group having 1 to 6 carbon atoms.
- X represents an integer of 1-3.
- Structural units derived from alkoxynaphthalene include the following structural units (b).
- each R 2 B independently represents a monovalent alkoxy group having 1 to 18 carbon atoms, preferably a monovalent alkoxy group having 1 to 6 carbon atoms.
- y represents an integer of 1-6.
- the two bonding sites in the structural unit (b) may exist in the same naphthalene ring or may exist in each of the two naphthalene rings.
- the specific copolymerization type epoxy resin can have the following structural unit (c).
- n is an integer of 1-10, preferably an integer of 2-8.
- the two bonding sites of the naphthalene ring in the structural unit (c) may exist in the same naphthalene ring or may exist in each of the two naphthalene rings.
- Structural units satisfying the above structural unit (c) include, for example, the following structural unit (d).
- the epoxy resin preferably contains a specific copolymerization type epoxy resin. Moreover, from the viewpoint of reflow resistance, the epoxy resin preferably contains a biphenyl-type epoxy resin.
- the epoxy equivalent of the epoxy resin is not particularly limited. From the viewpoint of the balance of various properties such as moldability, heat resistance and electrical reliability, the epoxy equivalent of the epoxy resin is preferably 40 g/eq to 1000 g/eq, more preferably 45 g/eq to 500 g/eq, and 50 g/eq. eq to 350 g/eq is more preferred. Let the epoxy equivalent of an epoxy resin be the value measured by the method according to JISK7236:2009.
- the epoxy resin may be solid or liquid at 25°C. If the epoxy resin is solid at 25°C, the softening point or melting point of the epoxy resin is not particularly limited. From the viewpoint of the balance between moldability and heat resistance, the softening point or melting point of the epoxy resin is preferably 40°C to 180°C. Also, from the viewpoint of handleability during production of the curable resin composition, the softening point or melting point of the epoxy resin is preferably 50°C to 130°C. In the present disclosure, softening point refers to a value measured by the ring and ball method of JIS K 7234:1986. In the present disclosure, melting point refers to a value measured according to the visual observation method of JIS K 0064:1992.
- the Mw of the epoxy resin is preferably 550-1050, more preferably 650-950.
- the Mn of the epoxy resin is preferably 250 to 800, more preferably 350 to 600.
- the content of the epoxy resin with respect to the total mass of the curable resin composition is preferably 0.5% by mass to 60% by mass, and 2% by mass. It is more preferably 50% by mass, and even more preferably 3% by mass to 45% by mass.
- the content of the specific copolymerization type epoxy resin with respect to the total mass of the epoxy resin is 50. It is preferably 90% by mass, more preferably 55% by mass to 80% by mass, and even more preferably 60% by mass to 75% by mass.
- the content of the biphenyl-type epoxy resin with respect to the total weight of the epoxy resin is 5% by mass to 40% by mass. % by mass is preferable, 7% by mass to 35% by mass is more preferable, and 10% by mass to 30% by mass is even more preferable.
- the curable resin composition according to the first aspect can contain a phenol-based curing agent.
- the type of phenol-based curing agent is not particularly limited, and can be selected from those commonly used as components of curable resin compositions.
- the phenol-based curing agents may be used singly or in combination of two or more.
- Phenolic curing agents include, for example, phenol resins and polyhydric phenol compounds having two or more phenolic hydroxyl groups in one molecule. Specific examples of the phenol-based curing agent are described below, but are not limited to these. Phenolic curing agents include polyhydric phenol compounds such as resorcin, catechol, bisphenol A, bisphenol F, substituted or unsubstituted biphenol; phenol, cresol, xylenol, resorcin, catechol, bisphenol A, bisphenol F, phenylphenol, amino At least one phenolic compound selected from the group consisting of phenol compounds such as phenol and naphthol compounds such as ⁇ -naphthol, ⁇ -naphthol and dihydroxynaphthalene, and aldehyde compounds such as formaldehyde, acetaldehyde and propionaldehyde under an acidic catalyst.
- phenol-based curing agent include polyhydric phenol compounds
- Novolac-type phenolic resins obtained by condensation or co-condensation Phenolic aralkyl resins synthesized from the above phenolic compounds and dimethoxyparaxylene, bis(methoxymethyl)biphenyl, etc., aralkyl-type phenolic resins such as naphthol aralkyl resins; Para-xylylene and / or metaxylylene-modified phenolic resin; melamine-modified phenolic resin; terpene-modified phenolic resin; Pentadiene-modified phenolic resin; Polycyclic aromatic ring-modified phenolic resin; Biphenyl-type phenolic resin; Triphenyl obtained by condensation or co-condensation of the above phenolic compound with an aromatic aldehyde compound such as benzaldehyde and salicylaldehyde in the presence of an acidic catalyst.
- Methane-type phenolic resin 2-[4-[(2-hydroxy-3-(2'-ethyl)hexyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1 triazine-type phenolic resins such as , 3,5-triazine; and phenolic resins obtained by copolymerizing two or more of these.
- the phenolic curing agent includes one or more phenolic curing agents selected from the group consisting of aralkyl-type phenolic resins and novolac-type phenolic resins. It is preferably included, more preferably included together.
- the phenol-based curing agent will be described in more detail below, but it is not limited to these.
- the aralkyl-type phenolic resin is not particularly limited, and a phenol synthesized from at least one selected from the group consisting of phenolic compounds and naphthol compounds and dimethoxyparaxylene, bis(methoxymethyl)biphenyl or derivatives thereof. resin.
- aralkyl-type phenol resins include phenol resins represented by the following general formulas (XII) to (XIV).
- R 23 represents a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, all of which may be the same or different.
- R 22 , R 24 , R 25 and R 28 each represent a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- R 26 and R 27 each represent a hydroxyl group or a monovalent organic group having 1 to 18 carbon atoms, and may be the same or different.
- i is each independently an integer of 0 to 3
- j is each independently an integer of 0 to 2
- k is each independently an integer of 0 to 4
- p is each independently an integer of 0 to 4 be.
- n is an average value, each independently an integer of 0 to 10; “All may be the same or different" described for R 22 etc. in the above general formula means, for example, all i R 22 in general formula (XII) may be the same or different means that Further, R 22 to R 37 may be the same or different. For example, all of R 22 and R 23 may be the same or different.
- the aralkyl-type phenolic resin is preferably a phenolic resin represented by general formula (XIII).
- i and k are preferably 0 in general formula (XIII).
- the aralkyl-type phenolic resin may be a copolymerized phenolic resin with other phenolic resins.
- Copolymerized phenolic resins include copolymerized phenolic resins of triphenylmethane-type phenolic resin and aralkyl-type phenolic resin, copolymerized phenolic resins of salicylaldehyde-type phenolic resin and aralkyl-type phenolic resin, and novolac-type phenolic resin.
- a copolymer type phenol resin with an aralkyl type phenol resin and the like can be mentioned.
- the dicyclopentadiene-type phenolic resin is not particularly limited as long as it is a phenolic resin obtained using a compound having a dicyclopentadiene skeleton as a raw material.
- a phenol resin represented by the following general formula (XV) is preferred.
- R 29 represents a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- i each independently represents an integer of 0 to 3;
- n is an average value and represents an integer of 0-10.
- the triphenylmethane-type phenolic resin is not particularly limited as long as it is a phenolic resin obtained using an aromatic aldehyde compound as a raw material.
- a phenol resin represented by the following general formula (XVI) is preferred.
- R 30 and R 31 each represent a monovalent organic group having 1 to 18 carbon atoms and may be the same or different.
- Each i is independently an integer of 0 to 3
- each k is independently an integer of 0 to 4.
- n is an average value and is an integer from 0 to 10;
- the copolymerized phenolic resin of triphenylmethane-type phenolic resin and aralkyl-type phenolic resin is not particularly limited as long as it is a copolymerized-type phenolic resin of phenolic resin obtained using a compound having a benzaldehyde skeleton as a raw material and aralkyl-type phenolic resin. .
- a phenol resin represented by the following general formula (XVII) is preferred.
- R 32 to R 34 each represent a monovalent organic group having 1 to 18 carbon atoms, and all of them may be the same or different.
- Each i is independently an integer of 0 to 3
- each k is independently an integer of 0 to 4
- each q is independently an integer of 0 to 5.
- l and m are average values and independently integers from 0 to 11. However, the sum of l and m is an integer of 1-11.
- the novolak-type phenolic resin is not particularly limited as long as it is a phenolic resin obtained by condensation or co-condensation of at least one phenolic compound selected from the group consisting of phenolic compounds and naphthol compounds and an aldehyde compound in the presence of an acidic catalyst.
- a phenol resin represented by the following general formula (XVIII) is preferred.
- R 35 represents a hydrogen atom or a monovalent organic group having 1 to 18 carbon atoms, all of which may be the same or different.
- R 36 represents a monovalent organic group having 1 to 18 carbon atoms, all of which may be the same or different.
- i each independently represents an integer of 0 to 3;
- n is an average value and represents an integer of 0-10.
- R 22 to R 36 in the general formulas (XII) to (XVIII) means, for example, that all i R 22 in formula (XII) are the same However, it means that they may be different from each other.
- Other R 23 to R 36 also mean that the respective numbers contained in the formula may all be the same or different from each other.
- R 22 to R 36 may be the same or different.
- all of R 22 and R 23 may be the same or different
- all of R 30 and R 31 may be the same or different.
- n in the above general formulas (XII) to (XVIII) is preferably an integer of 0 to 10. If it is 10 or less, the melt viscosity of the resin component does not become too high, and the viscosity becomes low when the curable resin is melt-molded, resulting in poor filling, deformation of the bonding wire (gold wire that connects the element and the lead), and the like. less likely to occur.
- the average n in one molecule is preferably set in the range of 0-4.
- the hydroxyl equivalent of the phenolic curing agent is not particularly limited. From the viewpoint of the balance of various properties such as reflow resistance, moldability, and electrical reliability, it is preferably 10 g/eq to 1000 g/eq, more preferably 30 g/eq to 500 g/eq.
- the hydroxyl equivalent refers to a value calculated based on the hydroxyl value measured according to JIS K 0070:1992.
- the softening point or melting point of the phenolic curing agent is preferably 40°C to 180°C. Also, from the viewpoint of handleability during production of the curable resin composition, the softening point or melting point of the phenol-based curing agent is preferably 50°C to 130°C.
- the content of the phenolic curing agent with respect to the total mass of the curable resin composition is 0.5% by mass to 40% by mass. It is preferably from 1% by mass to 30% by mass, and even more preferably from 2% by mass to 20% by mass.
- the content of the aralkyl-type phenol resin with respect to the total mass of the phenol-based curing agent is 60. It is preferably from 65% to 90% by mass, more preferably from 65% by mass to 95% by mass.
- the content of the novolak-type phenolic resin with respect to the total mass of the phenolic curing agent is 5. It is preferably from 10% by mass to 40% by mass, more preferably from 10% by mass to 30% by mass.
- the curable resin composition according to the first aspect includes, in addition to the components described above, a curing accelerator, an inorganic filler, a coupling agent, a stress relaxation agent, a release agent, a coloring agent, a flame retardant, an ion exchanger, Various additives such as resins other than epoxy resins and curing agents other than phenolic curing agents may be contained.
- the curable resin composition may contain various additives known in the art as necessary, in addition to the additives exemplified below.
- the curable resin composition according to the first aspect may contain a curing accelerator.
- the type of curing accelerator is not particularly limited, and can be selected according to the type of epoxy resin, desired properties of the curable resin composition, and the like.
- the curing accelerator preferably contains a phosphonium compound.
- phosphonium compounds include triphenylphosphine, diphenyl(p-tolyl)phosphine, tris(alkylphenyl)phosphine, tris(alkoxyphenyl)phosphine, tris(alkyl/alkoxyphenyl)phosphine, tris(dialkylphenyl)phosphine, tris(trialkylphenyl)phosphine, tris(tetraalkylphenyl)phosphine, tris(dialkoxyphenyl)phosphine, tris(trialkoxyphenyl)phosphine, tris(tetraalkoxyphenyl)phosphine, trialkylphosphine, dialkylarylphosphine, alkyldiaryl Tertiary phosphines such as phosphine, maleic anhydride, 1,
- the phosphonium compound preferably contains a compound represented by the following general formula (I-1) (hereinafter also referred to as a specific curing accelerator).
- R 1 to R 3 are each independently a hydrocarbon group having 1 to 18 carbon atoms, and two or more of R 1 to R 3 are bonded to each other to form a cyclic structure.
- R 4 to R 7 each independently represent a hydrogen atom, a hydroxyl group or an organic group having 1 to 18 carbon atoms, and two or more of R 4 to R 7 are bonded to each other to form a cyclic structure. may be formed.
- the “hydrocarbon group having 1 to 18 carbon atoms” described as R 1 to R 3 in general formula (I-1) includes an aliphatic hydrocarbon group having 1 to 18 carbon atoms and an aliphatic hydrocarbon group having 6 to 18 carbon atoms. Contains some aromatic hydrocarbon groups.
- the aliphatic hydrocarbon group having 1 to 18 carbon atoms preferably has 1 to 8 carbon atoms, more preferably 2 to 6 carbon atoms, and even more preferably 4 to 6 carbon atoms.
- the aliphatic hydrocarbon group having 1 to 18 carbon atoms may be a linear or branched aliphatic hydrocarbon group having 1 to 18 carbon atoms, or an alicyclic hydrocarbon group having 3 to 18 carbon atoms. good too. From the viewpoint of ease of production, it is preferably a straight-chain or branched aliphatic hydrocarbon group.
- linear or branched aliphatic hydrocarbon groups having 1 to 18 carbon atoms include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, Alkyl groups such as t-butyl group, pentyl group, hexyl group, octyl group, decyl group and dodecyl group, allyl group, vinyl group and the like can be mentioned.
- a linear or branched aliphatic hydrocarbon group may or may not have a substituent.
- substituents include alkoxy groups such as methoxy group, ethoxy group, n-butoxy group and t-butoxy group, aryl groups such as phenyl group and naphthyl group, hydroxyl group, amino group and halogen atom.
- a straight-chain or branched aliphatic hydrocarbon group may have two or more substituents, which may be the same or different. When the linear or branched aliphatic hydrocarbon group has a substituent, the total number of carbon atoms contained in the aliphatic hydrocarbon group and the substituent is preferably 1-18.
- unsubstituted alkyl groups are preferred, and unsubstituted alkyl groups having 1 to 8 carbon atoms are more preferred, such as n-butyl, isobutyl, n-pentyl, n-hexyl and n-octyl. groups are more preferred.
- alicyclic hydrocarbon groups having 3 to 18 carbon atoms include cycloalkyl groups such as cyclopentyl group, cyclohexyl group and cycloheptyl group, and cycloalkenyl groups such as cyclopentenyl group and cyclohexenyl group.
- the alicyclic hydrocarbon group may or may not have a substituent.
- substituents include alkyl groups such as methyl group, ethyl group, n-butyl group and t-butyl group, alkoxy groups such as methoxy group, ethoxy group, n-butoxy group and t-butoxy group, phenyl group and naphthyl group.
- An alicyclic hydrocarbon group may have two or more substituents, in which case the substituents may be the same or different.
- the total number of carbon atoms contained in the alicyclic hydrocarbon group and the substituent is preferably 3-18.
- the position of the substituent is not particularly limited.
- an unsubstituted cycloalkyl group is preferable, an unsubstituted cycloalkyl group having 4 to 10 carbon atoms is more preferable, and a cyclohexyl group, a cyclopentyl group and a cycloheptyl group are more preferable.
- the aromatic hydrocarbon group having 6 to 18 carbon atoms preferably has 6 to 14 carbon atoms, more preferably 6 to 10 carbon atoms.
- the aromatic hydrocarbon group may or may not have a substituent.
- substituents include alkyl groups such as methyl group, ethyl group, n-butyl group and t-butyl group, alkoxy groups such as methoxy group, ethoxy group, n-butoxy group and t-butoxy group, phenyl group and naphthyl group. aryl groups, hydroxyl groups, amino groups, halogen atoms, and the like.
- the aromatic hydrocarbon group may have two or more substituents, in which case the substituents may be the same or different.
- the total number of carbon atoms contained in the aromatic hydrocarbon group and the substituent is preferably 6-18.
- the position of the substituent is not particularly limited.
- aromatic hydrocarbon groups having 6 to 18 carbon atoms include phenyl, 1-naphthyl, 2-naphthyl, tolyl, dimethylphenyl, ethylphenyl, butylphenyl and t-butyl. phenyl group, methoxyphenyl group, ethoxyphenyl group, n-butoxyphenyl group, t-butoxyphenyl group and the like.
- the position of the substituent in these aromatic hydrocarbon groups may be any of the ortho position, meta position and para position.
- an unsubstituted aryl group having 6 to 12 carbon atoms or 6 to 12 carbon atoms including substituents is preferable, and an unsubstituted aryl group having 6 to 10 carbon atoms or carbon atoms including substituents
- An aryl group of numbers 6 to 10 is more preferred, and a phenyl group, p-tolyl group and p-methoxyphenyl group are even more preferred.
- R 1 to R 3 may combine with each other to form a cyclic structure” described as R 1 to R 3 in general formula (I-1) means that R 1 to R 3 It means that two or three of them are combined to form one divalent or trivalent hydrocarbon group as a whole.
- R 1 to R 3 examples include alkylene groups such as ethylene, propylene, butylene, pentylene and hexylene which can form a cyclic structure by bonding with a phosphorus atom; alkenylene groups such as ethylene, propylene and butylenylene groups; Substituents capable of forming a cyclic structure by bonding with a phosphorus atom, such as aralkylene groups such as methylenephenylene groups, and arylene groups such as phenylene, naphthylene and anthracenylene groups, can be mentioned. These substituents may be further substituted with alkyl groups, alkoxy groups, aryl groups, aryloxy groups, amino groups, hydroxyl groups, halogen atoms and the like.
- alkylene groups such as ethylene, propylene, butylene, pentylene and hexylene which can form a cyclic structure by bonding with a phosphorus atom
- the “organic group having 1 to 18 carbon atoms” described as R 4 to R 7 in general formula (I-1) above is an aliphatic group having 1 to 18 carbon atoms which may or may not be substituted. It is meant to include aromatic hydrocarbon groups, aromatic hydrocarbon groups, aliphatic hydrocarbon oxy groups, aromatic hydrocarbon oxy groups, acyl groups, hydrocarbon oxycarbonyl groups, and acyloxy groups.
- Examples of the aliphatic hydrocarbon group and aromatic hydrocarbon group include those mentioned above as examples of the aliphatic hydrocarbon group and aromatic hydrocarbon group represented by R 1 to R 3 .
- Examples of the aliphatic hydrocarbonoxy group include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, an n-butoxy group, a 2-butoxy group, a t-butoxy group, a cyclopropyloxy group, a cyclohexyloxy group, and a cyclopentyloxy group.
- an allyloxy group an oxy group having a structure in which an oxygen atom is bonded to the above-mentioned aliphatic hydrocarbon groups such as a vinyloxy group, and these aliphatic hydrocarbon oxy groups are further alkyl groups, alkoxy groups, aryl groups, aryloxy groups, amino and those substituted with groups, hydroxyl groups, halogen atoms, and the like.
- aromatic hydrocarbon oxy group examples include a phenoxy group, a methylphenoxy group, an ethylphenoxy group, a methoxyphenoxy group, a butoxyphenoxy group, a phenoxyphenoxy group having a structure in which an oxygen atom is bonded to the above aromatic hydrocarbon group, such as a phenoxyphenoxy group.
- acyl group examples include aliphatic hydrocarbon carbonyl groups such as formyl group, acetyl group, ethylcarbonyl group, butyryl group, cyclohexylcarbonyl group and allylcarbonyl group, and aromatic hydrocarbon carbonyl groups such as phenylcarbonyl group and methylphenylcarbonyl group. and the like, in which these aliphatic hydrocarbon carbonyl groups or aromatic hydrocarbon carbonyl groups are further substituted with an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an amino group, a halogen atom, or the like.
- hydrocarbon oxycarbonyl group examples include aliphatic hydrocarbon oxycarbonyl groups such as methoxycarbonyl group, ethoxycarbonyl group, butoxycarbonyl group, allyloxycarbonyl group and cyclohexyloxycarbonyl group, phenoxycarbonyl group, methylphenoxycarbonyl group and the like.
- aromatic hydrocarbon oxycarbonyl groups these aliphatic hydrocarbon carbonyloxy groups or aromatic hydrocarbon carbonyloxy groups further substituted with alkyl groups, alkoxy groups, aryl groups, aryloxy groups, amino groups, halogen atoms, etc. things, etc.
- acyloxy group examples include aliphatic hydrocarbon carbonyloxy groups such as a methylcarbonyloxy group, an ethylcarbonyloxy group, a butylcarbonyloxy group, an allylcarbonyloxy group and a cyclohexylcarbonyloxy group, a phenylcarbonyloxy group and a methylphenylcarbonyloxy group. etc., these aliphatic hydrocarbon carbonyloxy groups or aromatic hydrocarbon carbonyloxy groups are further substituted with alkyl groups, alkoxy groups, aryl groups, aryloxy groups, amino groups, halogen atoms, etc. and the like.
- R 4 to R 7 may combine with each other to form a cyclic structure” described as R 4 to R 7 in the general formula (I-1) means that two to four may be combined to form one divalent to tetravalent organic group as a whole.
- R 4 to R 7 include alkylene groups such as ethylene, propylene, butylene, pentylene and hexylene; alkenylene groups such as ethylene, propylene, butyleneylene; aralkylene groups such as methylenephenylene; and arylene groups such as phenylene, naphthylene and anthracenylene.
- Substituents capable of forming a cyclic structure such as groups, their oxy groups or dioxy groups are included. These substituents may be further substituted with alkyl groups, alkoxy groups, aryl groups, aryloxy groups, amino groups, hydroxyl groups, halogen atoms and the like.
- R 4 to R 7 in general formula (I-1) are not particularly limited.
- a hydrogen atom, a hydroxyl group, an aryl group substituted with at least one selected from the group consisting of an unsubstituted or alkyl group and an alkoxy group, or a chain or cyclic alkyl group preferable.
- Aryl groups that are unsubstituted or substituted with at least one selected from the group consisting of an alkyl group and an alkoxy group include a phenyl group, p-tolyl group, m-tolyl group, o-tolyl group, p-methoxyphenyl group, and the like. is mentioned.
- Chain or cyclic alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, 2-butyl, t-butyl, octyl and cyclohexyl groups. From the viewpoint of curability, it is preferred that all of R 4 to R 7 are hydrogen atoms, or that at least one of R 4 to R 7 is a hydroxyl group and the rest are all hydrogen atoms.
- R 1 to R 3 in general formula (I-1) are alkyl groups having 1 to 18 carbon atoms or cycloalkyl groups having 3 to 18 carbon atoms
- R 4 to R 7 are All are hydrogen atoms, or at least one is a hydroxyl group and the rest are all hydrogen atoms.
- all of R 1 to R 3 are alkyl groups having 1 to 18 carbon atoms or cycloalkyl groups having 3 to 18 carbon atoms
- all of R 4 to R 7 are hydrogen atoms, or at least one is a hydroxyl group. and the rest are all hydrogen atoms.
- the specific curing accelerator preferably contains a compound represented by the following general formula (I-2).
- R 1 to R 3 are each independently a hydrocarbon group having 1 to 18 carbon atoms, and two or more of R 1 to R 3 are bonded to each other to form a cyclic structure.
- R 4 to R 6 each independently represent a hydrogen atom or an organic group having 1 to 18 carbon atoms, and two or more of R 4 to R 6 are bonded to each other to form a cyclic structure.
- R 1 to R 6 in general formula (I-2) are the same as specific examples of R 1 to R 6 in general formula (I-1), and preferred ranges are also the same.
- a specific curing accelerator can be obtained, for example, as an adduct of a tertiary phosphine compound and a quinone compound.
- the third phosphine compound include triphenylphosphine, tributylphosphine, dibutylphenylphosphine, butyldiphenylphosphine, ethyldiphenylphosphine, triphenylphosphine, tris(4-methylphenyl)phosphine, and tris(4-ethylphenyl)phosphine.
- tris(4-n-propylphenyl)phosphine tris(4-n-butylphenyl)phosphine, tris(isopropylphenyl)phosphine, tris(t-butylphenyl)phosphine, tris(2,4-dimethylphenyl)phosphine, tris(2,6-dimethylphenyl)phosphine, tris(2,4,6-trimethylphenyl)phosphine, tris(2,6-dimethyl-4-ethoxyphenyl)phosphine, tris(4-methoxyphenyl)phosphine, tris( 4-ethoxyphenyl)phosphine and the like. From the viewpoint of moldability, triphenylphosphine and tributylphosphine are preferred.
- quinone compounds include 1,2-benzoquinone, 1,4-benzoquinone, diphenoquinone, 1,4-naphthoquinone, and anthraquinone. From the viewpoint of moisture resistance and storage stability, 1,4-benzoquinone is preferred.
- the specific curing accelerator include an addition reaction product of triphenylphosphine and 1,4-benzoquinone, an addition reaction product of tri-n-butylphosphine and 1,4-benzoquinone, and tricyclohexylphosphine and 1,4-benzoquinone.
- addition reaction product of dicyclohexylphenylphosphine and 1,4-benzoquinone addition reaction product of cyclohexyldiphenylphosphine and 1,4-benzoquinone
- addition reaction product of triisobutylphosphine and 1,4-benzoquinone tricyclopentylphosphine and an addition reaction product of 1,4-benzoquinone.
- the thermosetting resin composition may contain curing accelerators other than the phosphonium compound.
- curing accelerators other than phosphonium compounds include 1,5-diazabicyclo[4.3.0]nonene-5 (DBN) and 1,8-diazabicyclo[5.4.0]undecene-7 (DBU).
- Cyclic amidine compounds such as diazabicycloalkenes such as diazabicycloalkene, 2-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-heptadecylimidazole; derivatives of the cyclic amidine compounds; the cyclic amidine compounds or the Phenol novolak salts of derivatives; These compounds include maleic anhydride, 1,4-benzoquinone, 2,5-toluquinone, 1,4-naphthoquinone, 2,3-dimethylbenzoquinone, 2,6-dimethylbenzoquinone, 2,3- quinone compounds such as dimethoxy-5-methyl-1,4-benzoquinone, 2,3-dimethoxy-1,4-benzoquinone, and phenyl-1,4-benzoquinone; and compounds with ⁇ bonds such as diazophenylmethane.
- diazabicycloalkenes such
- Cyclic amidiniums such as tetraphenylborate salt of DBU, tetraphenylborate salt of DBN, tetraphenylborate salt of 2-ethyl-4-methylimidazole, tetraphenylborate salt of N-methylmorpholine, etc.
- tertiary amine compounds such as pyridine, triethylamine, triethylenediamine, benzyldimethylamine, triethanolamine, dimethylaminoethanol, tris(dimethylaminomethyl)phenol; derivatives of the tertiary amine compounds; tetra-n-butylammonium acetate , tetra-n-butylammonium phosphate, tetraethylammonium acetate, tetra-n-hexylammonium benzoate, and ammonium salt compounds such as tetrapropylammonium hydroxide.
- thermosetting resin composition contains a specific curing accelerator as a curing accelerator
- the content of the specific curing accelerator is preferably 30% by mass or more of the total curing accelerator, and is 50% by mass or more. is more preferable, and 70% by mass or more is even more preferable.
- the amount thereof is preferably 0.1 parts by mass to 30 parts by mass with respect to 100 parts by mass of the resin component, and 1 part by mass to 15 parts by mass. It is more preferable to have When the amount of the curing accelerator is 0.1 parts by mass or more with respect to 100 parts by mass of the resin component, there is a tendency for satisfactory curing in a short period of time. When the amount of the curing accelerator is 30 parts by mass or less with respect to 100 parts by mass of the resin component, the curing speed is not too fast and a good molded article tends to be obtained.
- the curable resin composition according to the first aspect may contain an inorganic filler.
- the curable resin composition contains an inorganic filler, the hygroscopicity of the curable resin composition tends to decrease, and the strength in the cured state tends to improve.
- the curable resin composition is used as a sealing material for semiconductor packages, it preferably contains an inorganic filler.
- inorganic filler is not particularly limited. Specifically, silica such as spherical silica and crystalline silica, glass, alumina, calcium carbonate, zirconium silicate, calcium silicate, silicon nitride, aluminum nitride, boron nitride, beryllia, zirconia, zircon, fosterite, steatite, Inorganic materials such as spinel, mullite, titania, talc, clay, and mica. Inorganic fillers having a flame retardant effect may also be used. Inorganic fillers having a flame retardant effect include aluminum hydroxide, magnesium hydroxide, composite metal hydroxides such as composite hydroxides of magnesium and zinc, and zinc borate.
- an inorganic filler may be used individually by 1 type, or may be used in combination of 2 or more types.
- Examples of the state of the inorganic filler include powders, beads obtained by spheroidizing powders, fibers, and the like.
- An inorganic filler may be used individually by 1 type, or may be used in combination of 2 or more types.
- the shape of the inorganic filler is not particularly limited, and examples include powdery, spherical, and fibrous shapes.
- a spherical shape is preferable from the viewpoint of fluidity during molding of the curable resin composition and resistance to mold wear.
- the average particle size of the inorganic filler is not particularly limited. From the viewpoint of the balance between the viscosity of the curable resin composition and the filling property, etc., the volume average particle size of the inorganic filler is preferably 0.1 ⁇ m to 50 ⁇ m, more preferably 0.3 ⁇ m to 30 ⁇ m. , 0.5 ⁇ m to 25 ⁇ m.
- the average particle size of the inorganic filler can be measured as the volume average particle size (D50) with a laser diffraction scattering method particle size distribution analyzer. A volume average particle diameter can be measured by a known method.
- an inorganic filler is extracted from a curable resin composition or cured resin using an organic solvent, nitric acid, aqua regia, etc., and sufficiently dispersed using an ultrasonic disperser or the like to prepare a dispersion.
- the volume average particle diameter of the inorganic filler can be measured from the volume-based particle size distribution measured by a laser diffraction scattering particle size distribution analyzer.
- the volume-average particle size of the inorganic filler is measured from the volume-based particle size distribution obtained by embedding the cured resin in a transparent epoxy resin or the like and polishing the resulting cross-section with a scanning electron microscope. be able to.
- FIB device focused ion beam SEM
- the curable resin composition contains an inorganic filler
- its content is not particularly limited. It is preferably 30% by mass to 90% by mass, more preferably 35% by mass to 80% by mass, and even more preferably 40% by mass to 70% by mass of the total curable resin composition.
- the content of the inorganic filler is 30% by mass or more of the entire curable resin composition, the properties of the cured resin, such as coefficient of thermal expansion, thermal conductivity and elastic modulus, tend to be further improved.
- the content of the inorganic filler is 90% by mass or less of the entire curable resin composition, the increase in viscosity of the curable resin composition is suppressed, the fluidity is further improved, and the moldability tends to be better. It is in.
- the curable resin composition according to the first aspect may contain a coupling agent.
- the type of coupling agent is not particularly limited, and known coupling agents can be used. Examples of coupling agents include silane coupling agents and titanium coupling agents.
- a coupling agent may be used individually by 1 type, or may use 2 or more types together.
- the silane coupling agent is not particularly limited as long as it is a compound other than the linear polysiloxane compound described above. sidoxypropylmethyldiethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-(2-aminoethyl)amino propyltrimethoxysilane, 3-(2-aminoethyl)aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercapto propyltriethoxysilane, 3-ureidopropyltriethoxysilane, octenyltrimethoxysilane, gly
- Titanium coupling agents include isopropyl triisostearoyl titanate, isopropyl tris(dioctylpyrophosphate) titanate, isopropyl tri(N-aminoethyl-aminoethyl) titanate, tetraoctylbis(ditridecylphosphite) titanate, tetra(2, 2-diallyloxymethyl-1-butyl)bis(ditridecylphosphite)titanate, bis(dioctylpyrophosphate)oxyacetate titanate, bis(dioctylpyrophosphate)ethylene titanate, isopropyltrioctanoyltitanate, isopropyldimethacrylisostearoyltitanate , isopropyltridodecylbenzenesulfonyltitanate, isopropylisostearoyldiacryl
- the curable resin composition according to the first aspect contains at least one of 3-aminopropyltrimethoxysilane and 3-glycidoxypropyltrimethoxysilane. preferably.
- the content of the coupling agent should be the same as the inorganic filler contained in the curable resin composition, from the viewpoint of the adhesiveness of the interface between the epoxy resin and the inorganic filler.
- 100 parts by mass it is preferably 0.001 to 10 parts by mass, more preferably 0.01 to 8 parts by mass, and 0.05 to 5 parts by mass. is more preferred.
- the curable resin composition according to the first aspect may contain stress relaxation agents such as silicone oil and silicone rubber particles.
- stress relaxation agents such as silicone oil and silicone rubber particles.
- the stress relaxation agent include commonly used known stress relaxation agents (flexible agents).
- stress relaxation agents include thermoplastic elastomers such as silicone, styrene, olefin, urethane, polyester, polyether, polyamide, and polybutadiene, natural rubber (NR), and acrylonitrile-butadiene.
- NBR Non-acrylate-styrene-butadiene copolymer
- MVS methyl methacrylate-silicone copolymer
- methacrylate-butyl acrylate examples include rubber particles having a core-shell structure such as copolymers.
- a stress relaxation agent may be used individually by 1 type, or may be used in combination of 2 or more types. Among them, a silicone-based stress relieving agent is preferable. Examples of silicone-based stress relieving agents include those having epoxy groups, those having amino groups, and those modified with polyethers.
- the content is preferably 0.1 parts by mass to 30 parts by mass with respect to 100 parts by mass of the epoxy resin contained in the curable resin composition. , more preferably 1 to 5 parts by mass.
- the curable resin composition according to the first aspect may contain a release agent from the viewpoint of releasability from the mold.
- the release agent is not particularly limited, and conventionally known agents can be used. Examples of release agents include carnauba wax, higher fatty acids such as montanic acid and stearic acid, higher fatty acid metal salts, ester waxes such as montanic acid esters, and polyolefin waxes such as oxidized polyethylene and non-oxidized polyethylene.
- the release agent may be used singly or in combination of two or more.
- the content of the release agent is 0.01 parts by mass with respect to 100 parts by mass of the epoxy resin contained in the curable resin composition. It is preferably from 0.1 to 10 parts by mass, more preferably from 0.1 to 10 parts by mass.
- the amount of the release agent is 0.01 parts by mass or more with respect to 100 parts by mass of the resin component, there is a tendency that sufficient releasability can be obtained.
- it is 15 parts by mass or less, there is a tendency that better releasability can be obtained.
- the curable resin composition according to the first aspect may contain a colorant.
- coloring agents include known coloring agents such as carbon black, organic dyes, organic pigments, titanium oxide, red lead, and red iron oxide.
- the content of the coloring agent can be appropriately selected according to the purpose and the like.
- the colorants may be used singly or in combination of two or more.
- the curable resin composition contains a colorant
- its content is preferably 0.01% by mass to 5% by mass, more preferably 0.05% by mass to 3% by mass, and 0 More preferably, it is 0.01% by mass to 1% by mass.
- the curable resin composition according to the first aspect may contain a flame retardant.
- the flame retardant is not particularly limited, and conventionally known ones can be used. Flame retardants include organic or inorganic compounds containing halogen atoms, antimony atoms, nitrogen atoms or phosphorus atoms, metal hydroxides, and the like. A flame retardant may be used individually by 1 type, or may be used in combination of 2 or more types.
- the curable resin composition according to the first aspect contains a flame retardant
- its content is not particularly limited as long as it is sufficient to obtain the desired flame retardant effect.
- the content of the flame retardant is preferably 1 part by mass to 300 parts by mass, more preferably 2 parts by mass to 150 parts by mass with respect to 100 parts by mass of the epoxy resin contained in the curable resin composition. .
- the curable resin composition according to the first aspect may contain an ion exchanger.
- an ion exchanger When the curable resin composition is used as a sealing material for a semiconductor package, it preferably contains an ion exchanger from the viewpoint of improving the moisture resistance and high-temperature storage characteristics of the electronic component device including the element to be sealed.
- the ion exchanger is not particularly limited, and conventionally known ones can be used. Specific examples include hydrotalcite compounds and hydrous oxides of at least one element selected from the group consisting of magnesium, aluminum, titanium, zirconium and bismuth.
- the ion exchangers may be used singly or in combination of two or more.
- the ion exchanger includes hydrotalcite represented by the following general formula (A).
- the curable resin composition according to the first aspect contains an ion exchanger
- its content is not particularly limited as long as it is sufficient to trap ions such as halogen ions.
- the content of the ion exchanger is preferably 0.1 to 30 parts by mass, more preferably 1 to 5 parts by mass, with respect to 100 parts by mass of the epoxy resin contained in the curable resin composition. is more preferred.
- the curable resin composition according to the first aspect may contain resins other than epoxy resins.
- the type of resin other than the epoxy resin is not particularly limited, and can be selected from those commonly used as components of curable resin compositions. Resins other than epoxy resins may be used singly or in combination of two or more.
- Resins other than epoxy resins include thiol resins, urea resins, melamine resins, urethane resins, silicone resins, maleimide resins, Saturated polyester resin and the like can be mentioned.
- the curable resin composition according to the first aspect may contain a curing agent other than the phenolic curing agent.
- the type of curing agent other than the phenol-based curing agent is not particularly limited, and can be selected from those commonly used as components of curable resin compositions. Curing agents other than phenol-based curing agents may be used alone or in combination of two or more.
- Curing agents other than phenolic curing agents include amine curing agents, acid anhydride curing agents, poly Mercaptan-based curing agents, polyaminoamide-based curing agents, isocyanate-based curing agents, blocked isocyanate-based curing agents, and the like are included.
- the active hydrogen equivalent of the amine-based curing agent is not particularly limited. From the viewpoint of the balance of various properties such as reflow resistance, moldability, and electrical reliability, it is preferably 10 g/eq to 1000 g/eq, more preferably 30 g/eq to 500 g/eq.
- the active hydrogen equivalent of the amine curing agent is a value calculated based on the amine value measured according to JIS K 7237:1995.
- the content of the curing agent other than the phenolic curing agent with respect to the total mass of the curable resin composition is not particularly limited. It is preferably from 5% by mass to 35% by mass, more preferably from 5% by mass to 30% by mass.
- the method for producing the curable resin composition is not particularly limited.
- a general method there can be mentioned a method of thoroughly mixing components in predetermined amounts with a mixer or the like, melt-kneading the mixture with a mixing roll, an extruder or the like, cooling, and pulverizing. More specifically, for example, predetermined amounts of the components described above are uniformly stirred and mixed, kneaded with a kneader, roll, extruder, or the like preheated to 70° C. to 140° C., cooled, and pulverized. can be mentioned.
- the curable resin composition is preferably solid at 25°C.
- the shape of the curable resin composition is not particularly limited, and examples thereof include powder, granules, tablets, and the like.
- the curable resin composition is in the form of a tablet, it is preferable from the standpoint of handleability that the dimensions and mass are such that they meet the molding conditions of the package.
- ⁇ Curable resin composition according to the second aspect is obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition.
- the sum of the tan ⁇ values at each temperature of 70°C, 80°C and 90°C is over 0.600.
- the curable resin composition according to the second aspect has excellent reflow resistance.
- the vertical axis is tan ⁇ and the horizontal axis is the temperature from 30 ° C. to 260 ° C., 70 ° C., 80 ° C. and 90 ° C.
- the curable resin composition according to the second aspect in which the total value of tan ⁇ at each temperature of ° C. exceeds 0.600, the internal stress of the cured resin that occurs during reflow tends to be relaxed. It is in.
- the adhesiveness between the cured resin of the curable resin composition and the supporting member is improved, so that it is presumed to have excellent reflow resistance.
- the curable resin composition of the present disclosure even after heating and humidifying under the conditions of 85 ° C. temperature, 85% relative humidity, and 168 hours (corresponding to MSL level 1), it exhibits excellent reflow resistance. is amazing.
- the sum of tan ⁇ values at each temperature of 70°C, 80°C and 90°C is preferably more than 0.700.
- the upper limit of the sum of tan ⁇ values at temperatures of 70° C., 80° C. and 90° C. is not particularly limited, but can be, for example, 2.0 or less.
- the temperature at which tan ⁇ becomes maximum is preferably less than 120°C, more preferably less than 110°C.
- the lower limit of the temperature at which tan ⁇ is maximized is not particularly limited, it can be, for example, 50° C. or higher.
- the maximum value of tan ⁇ is preferably over 0.400, more preferably over 0.410.
- the upper limit of the maximum value of tan ⁇ is not particularly limited, it can be, for example, 1.0 or less.
- the sum of tan ⁇ values at each temperature of 20°C, 230°C, 240°C and 250°C is preferably more than 0.400.
- the upper limit of the sum of tan ⁇ values at temperatures of 20° C., 230° C., 240° C. and 250° C. is not particularly limited, but can be, for example, 2.0 or less.
- the value of tan ⁇ at at least any temperature of -10 ° C. at which tan ⁇ becomes maximum is 60 It is preferably greater than, more preferably greater than 63, and even more preferably greater than 65.
- the storage viscoelasticity at 260 ° C. obtained by performing dynamic viscoelasticity measurement on the resin cured product of the curable resin composition is preferably 450 MPa or less, and is 435 MPa or less. is more preferably 420 MPa or less.
- the lower limit of the storage modulus is not particularly limited, it can be, for example, 150 MPa or more.
- the thermal expansion coefficient (CTE1) below the glass transition temperature of the resin cured product of the curable resin composition according to the second aspect obtained by thermomechanical analysis is 15 ppm / ° C. or less from the viewpoint of followability to the support member. is preferred, 13 ppm/°C or less is more preferred, and 10 ppm/°C or less is even more preferred.
- the lower limit of the coefficient of thermal expansion is not particularly limited, it can be set to 3 ppm/°C, for example.
- the coefficient of thermal expansion (CTE2) above the glass transition temperature is preferably 10 ppm/° C. to 45 ppm/° C., more preferably 12 ppm/° C. to 40 ppm/° C., more preferably 15 ppm/° C. to 38 ppm/° C. °C is more preferred.
- the curable resin composition according to the second aspect contains the epoxy resin and the phenolic curing agent in such a manner that the equivalent ratio of the phenolic hydroxyl group of the phenolic curing agent to the epoxy group of the epoxy resin is 0.5. It is preferably contained at 5 or more and less than 1.0.
- curable resin composition Applications of the curable resin composition according to the first aspect and the curable resin composition according to the second aspect are not particularly limited, and can be used in various mounting techniques, for example, as sealing materials for electronic component devices.
- the curable resin composition is used for resin moldings for various modules, resin moldings for motors, vehicle-mounted resin moldings, sealing materials for protective materials for electronic circuits, etc.
- the resin composition has good fluidity and curability. can be used in a variety of applications where it is desirable to have
- An electronic component device of the present disclosure includes an element and a resin cured product of the curable resin composition according to the first aspect or the curable resin composition according to the second aspect for sealing the element.
- the electronic component device can have a support member on which the element is mounted.
- supporting members include lead frames, pre-wired tape carriers, wiring boards, glass, silicon wafers, organic substrates, and the like.
- a lead frame is preferable from the viewpoint of adhesiveness to the resin cured product of the curable resin composition.
- the lead frame may or may not have a roughened surface, but from the viewpoint of manufacturing cost, a non-roughened lead frame is preferable, and from the viewpoint of adhesiveness, a roughened lead frame is preferred. Planarized leadframes are preferred.
- the roughening method is not particularly limited, and includes alkali treatment, silane coupling treatment, sand mat treatment, plasma treatment, corona discharge treatment and the like.
- the lead frame can have a plated layer containing at least one of Au, Pd and Ni on at least part of the surface. Further, the plated layer may be a single layer or multiple layers.
- the multi-layer plating layer a plating layer having a three-layer configuration in which a Ni plating layer, a Pd plating layer, and an Au plating layer are laminated from the lead frame side, or the like can be used.
- the three-layer lead frame include a lead frame called PPF (Pre Plating Lead Frame), which is a copper lead frame plated with Ni--Pd--Au.
- the thickness of the plating layer is not particularly limited, and is preferably 5 ⁇ m or less, more preferably 4 ⁇ m or less, and even more preferably 3 ⁇ m or less.
- elements included in electronic component devices include active elements such as silicon chips, transistors, diodes, and thyristors, and passive elements such as capacitors, resistors, and coils.
- Specific configurations of the electronic component device include, but are not limited to, the following configurations.
- TCP Tape Carrier Package having a structure in which an element connected to a tape carrier using bumps is sealed with a curable resin composition
- a COB (Chip On Board) module having a structure in which an element connected to wiring formed on a support member by wire bonding, flip chip bonding, soldering, or the like is sealed with
- a curable resin composition is formed.
- BGA Bit Grid Array
- CSP Chip Size Package
- MCP Multi Chip Package
- SiP System in a Package
- the method of sealing the element using the curable resin composition is not particularly limited, and known methods can be applied.
- a sealing method for example, low-pressure transfer molding is generally used, but injection molding, compression molding, cast molding, or the like may also be used.
- Examples 1 to 7 and Comparative Examples 1 to 3 After pre-mixing (dry blending) the materials of the formulation shown in Table 1, they are kneaded for about 15 minutes with a biaxial roll (roll surface temperature: about 80 ° C.), cooled, and pulverized to obtain a powdery curable resin composition. manufactured.
- Epoxy resin A copolymer type epoxy resin having the following structural units, epoxy equivalent of 250 g/eq, melt viscosity at 150° C. of 0.7 dPa s, Mn of 350 to 600
- Epoxy resin B biphenyl type epoxy resin, epoxy equivalent 196 g / eq, softening point 106 ° C., manufactured by Mitsubishi Chemical Corporation, trade name "YX-4000H", Mn350 ⁇ Epoxy resin C: biphenyl aralkyl type epoxy resin, epoxy equivalent 284 g / eq
- Phenol-based curing agent A aralkyl-type phenolic resin, hydroxyl equivalent of 106 g/eq ⁇ Phenolic curing agent B: triphenylmethane type phenol resin, hydroxyl equivalent 95 g / eq - Phenol-based curing agent C: aralkyl-type phenolic resin, hydroxyl equivalent 203 g/eq - Phenol-based curing agent D: melamine-modified phenolic resin, hydroxyl equivalent 120 g/eq, softening point: 90°C Phenolic curing agent E: triazine-type phenolic resin, 2-[4-[(2-hydroxy-3-(2'-ethyl)hexyl)oxy]-2-hydroxyphenyl]-4,6-bis(2, 4-dimethylphenyl)-1,3,5-triazine, BASF, trade name "Tinuvin (registered trademark) 405" - Phenolic curing
- Coupling agent A 3-aminopropyltrimethoxysilane ⁇
- Coupling agent B 3-glycidoxypropyltrimethoxysilane ⁇
- Coupling agent C linear polysiloxane, melting point: -70 ° C., epoxy equivalent 120 g / eq ⁇ 150g/eq
- Coupling agent D tetrasulfide ditriethoxysilane
- ⁇ Stress relaxation agent A Epoxy-modified silicone resin
- ⁇ Stress relaxation agent B Indene-containing copolymer
- ⁇ Stress relaxation agent C Phenyl group-containing silicone resin
- ⁇ Inorganic filler A silica filler with an average particle size of 19.4 ⁇ m
- ⁇ Inorganic filler B silica filler with an average particle size of 0.6 ⁇ m
- ⁇ Inorganic filler C silica filler with an average particle size of 50 nm or less
- ⁇ Inorganic filler D Metal hydroxide containing magnesium and zinc with an average particle size of 1.2 ⁇ m
- the resin cured product was a cured product having a rectangular shape with a short side of 5.1 mm, a long side of 20 mm and a thickness of 2 mm. Then, the cured resin was allowed to stand for 168 hours under conditions of a temperature of 85° C. and a relative humidity of 85%. The mass (g) of the cured resin material after standing was measured, and the rate of increase (%) from the mass (g) of the cured resin material before standing was determined. The results are summarized in Table 1.
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Abstract
Description
しかし、面実装型ICは配線板表面に仮止めを行い、はんだバス、リフロー装置等で処理されるため、直接はんだ付け温度(リフロー温度)にパッケージが曝される。この結果、パッケージが吸湿している場合、リフローの際に吸湿水分が気化して、発生した蒸気圧が剥離応力として働き、素子、リードフレーム等の支持部材と封止材との間における剥離が発生し、パッケージクラックの発生、電気的特性不良等の原因となる。そのため、支持部材との接着性に優れ、ひいては、はんだ耐熱性(耐リフロー性)に優れる封止材料の開発が望まれている。
本開示は上記状況に鑑みてなされたものであり、その解決しようとする課題は、優れた耐リフロー性を有する、硬化性樹脂組成物及びこの硬化性樹脂組成物により封止される素子を備える電子部品装置を提供しようとするものである。
<1> 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、(1)tanδが最大となる温度が、120℃未満であり、(2)tanδの最大値が、0.400超であり、且つ(3)220℃、230℃、240℃及び250℃の各温度におけるtanδの値の合計が、0.400超である、硬化性樹脂組成物。
<2> 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、70℃、80℃及び90℃の各温度におけるtanδの値の合計が、0.600超である、硬化性樹脂組成物。
<3> 上記チャートにおけるtanδの最大値を100としたとき、tanδが最大となる温度-10℃の少なくともいずれかの温度におけるtanδの値が60超である、上記<1>又は<2>に記載の硬化性樹脂組成物。
<4> 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより求められる260℃における貯蔵粘弾性が、450MPa以下である、上記<1>~<3>のいずれか1つに記載の硬化性樹脂組成物。
<5> エポキシ樹脂と、フェノール系硬化剤とを、上記エポキシ樹脂のエポキシ基に対する上記フェノール系硬化剤のフェノール性水酸基の当量比0.5以上、1.0未満で、含有する、上記<1>~<4>のいずれか1つに記載の硬化性樹脂組成物。
<6> 素子と、上記素子を封止する上記<1>~<5>のいずれか1つに記載の硬化性樹脂組成物の樹脂硬化物とを備える、電子部品装置。
<7> 上記素子を一方の面に搭載する支持部材をさらに備える、上記<6>に記載の電子部品装置。
本開示中に段階的に記載されている数値範囲において、一つの数値範囲で記載された上限値又は下限値は、他の段階的な記載の数値範囲の上限値又は下限値に置き換えてもよい。また、本開示中に記載されている数値範囲において、その数値範囲の上限値又は下限値は、合成例に示されている値に置き換えてもよい。
本開示において各成分は該当する化合物を複数種含有してもよい。組成物中に各成分に該当する物質が複数種存在する場合、各成分の含有率又は含有量は、特に断らない限り、組成物中に存在する当該複数種の物質の合計の含有率又は含有量を意味する。
本開示において各成分に該当する粒子は複数種含有してもよい。組成物中に各成分に該当する粒子が複数種存在する場合、各成分の粒子径は、特に断らない限り、組成物中に存在する当該複数種の粒子の混合物についての値を意味する。
本開示において「積層」との語は、層を積み重ねることを表し、二以上の層が結合されていてもよく、二以上の層が着脱可能であってもよい。
本開示の基(原子団)の表記において、置換及び非置換を記していない表記は、置換基を有さないものと共に置換基を有するものをも包含するものである。
本開示において構造単位数は、単一の分子については整数値を表すが、複数種の分子の集合体としては平均値である有理数を表す。
本開示において、炭素数とは、ある基全体に含まれる炭素原子の総数を意味し、該基が置換基を有さない場合は当該基の骨格を形成する炭素原子の数を表し、該基が置換基を有する場合は当該基の骨格を形成する炭素原子の数に置換基中の炭素原子の数を加えた総数を表す。
なお、樹脂硬化物の作製は、トランスファ成形機により、金型温度175℃、成形圧力8.3MPa、硬化時間120秒の条件で硬化性樹脂組成物を成形し、次いで、175℃5時間の後硬化を実施することにより行う。
測定条件は、荷重15g、測定温度-50℃~220℃、昇温速度5℃/分とする。
熱機械分析装置としては、セイコーインスツルメンツ株式会社製TMA/SS6100を用いることができる。
但し、分子量が小さいためにGPCでは正確なMw又はMnを測定できない化合物については、化合物の化学構造から求められる分子量を、その化合物のMw又はMnとして採用する。
(GPC測定装置)
・GPC装置 :高速GPC装置「HCL-8320GPC」、検出器は示差屈折計又はUV、東ソー株式会社製
・カラム :カラムTSKgel SuperMultipore HZ-H(カラム長さ:15cm、カラム内径:4.6mm)、東ソー株式会社製
(測定条件)
・溶媒 :テトラヒドロフラン(THF)
・測定温度 :40℃
・流量 :0.35mL/分
・試料濃度 :10mg/THF5mL
・注入量 :20μL
<第1の態様に係る硬化性樹脂組成物>
第1の態様に係る硬化性樹脂組成物は、硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、(1)tanδが最大となる温度(いわゆるガラス転移温度)が、120℃未満であり、(2)tanδの最大値が、0.400超であり、且つ(3)220℃、230℃、240℃及び250℃の各温度におけるtanδの値の合計が、0.400超である。
耐リフロー性を評価するための試験として、JEDEC(Joint Electron Device Engineer Council)規格であるMSL(Moisture Sensitive Level)試験が知られる。
本開示の硬化性樹脂組成物によれば、温度85℃、相対湿度85%、168時間の条件(MSLレベル1に相当)による加熱加湿後であっても、優れた耐リフロー性を示し、これは驚くべきものである。
支持部材との接着性の観点から、ガラス転移温度以上の熱膨張係数(CTE2)は、10ppm/℃~45ppm/℃が好ましく、12ppm/℃~40ppm/℃がより好ましく、15ppm/℃~38ppm/℃がさらに好ましい。
本開示において、エポキシ樹脂のエポキシ基に対するフェノール系硬化剤のフェノール性水酸基(活性水素)の当量比(フェノール系硬化剤の活性水素のモル数/エポキシ樹脂のエポキシ基のモル数)は、硬化性樹脂組成物の1H-NMRを測定し、エポキシ基のプロトンと、フェノール性水酸基のプロトンとの積分比から求めることができる。なお、硬化性樹脂組成物の1H-NMRは、以下の条件で測定する。
(測定条件)
・測定装置:Bruker社製、AVANCE3 HD 400 Nanobay
・測定溶媒:DMSO-d6(0.7ml)
・測定温度:25℃
・1H共鳴周波数:400MHz
・測定モード:NPROTON
・積算回数:16回
・緩和時間:1秒
第1の態様に係る硬化性樹脂組成物は、エポキシ樹脂を含有することができる。エポキシ樹脂は1分子中に2個以上のエポキシ基を有するものであればその種類は特に制限されない。なお、本開示において、上記直鎖状ポリシロキサン化合物は、エポキシ樹脂には含めないものとする。
エポキシ樹脂の具体例を以下に記載するが、これらに限定されるものではない。
例えば、ナフトール骨格を有する化合物及びフェノール骨格を有する化合物を用いたノボラック型フェノール樹脂をグリシジルエーテル化して得られるエポキシ樹脂が好ましく、下記一般式(IX)で表されるエポキシ樹脂がより好ましい。
また、一般式(III)~(XI)における炭素数1~18の1価の有機基はアルキル基又はアリール基であることが好ましい。
なお、上記構造単位(b)における2つの結合部位は、ナフタレン環の同一環に存在してもよく、ナフタレン環の2つの環それぞれに存在してもよい。
下記構造単位では、nは、1~10の整数であり、2~8の整数であることが好ましい。
なお、上記構造単位(c)におけるナフタレン環が有する2つの結合部位は、ナフタレン環の同一環に存在してもよく、ナフタレン環の2つの環それぞれに存在してもよい。
また、耐リフロー性の観点から、エポキシ樹脂は、ビフェニル型エポキシ樹脂を含むことが好ましい。
エポキシ樹脂のエポキシ当量は、JIS K 7236:2009に準じた方法で測定される値とする。
成形性と耐熱性とのバランスの観点からは、エポキシ樹脂の軟化点又は融点は、40℃~180℃であることが好ましい。また、硬化性樹脂組成物の製造の際の取扱い性の観点からは、エポキシ樹脂の軟化点又は融点は、50℃~130℃であることが好ましい。
本開示において、軟化点は、JIS K 7234:1986の環球法により測定された値をいう。
本開示において、融点は、JIS K 0064:1992の目視による方法に則って測定された値をいう。
また、耐リフロー性、成形性、耐熱性等の観点から、エポキシ樹脂のMnは、250~800であることが好ましく、350~600であることがより好ましい。
第1の態様に係る硬化性樹脂組成物は、フェノール系硬化剤を含有することができる。フェノール系硬化剤の種類は特に制限されず、硬化性樹脂組成物の成分として一般に使用されているものから選択できる。フェノール系硬化剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
フェノール系硬化剤の具体例を以下に記載するが、これらに限定されるものではない。
フェノール系硬化剤としては、レゾルシン、カテコール、ビスフェノールA、ビスフェノールF、置換又は非置換のビフェノール等の多価フェノール化合物;フェノール、クレゾール、キシレノール、レゾルシン、カテコール、ビスフェノールA、ビスフェノールF、フェニルフェノール、アミノフェノール等のフェノール化合物及びα-ナフトール、β-ナフトール、ジヒドロキシナフタレン等のナフトール化合物からなる群より選ばれる少なくとも一種のフェノール性化合物と、ホルムアルデヒド、アセトアルデヒド、プロピオンアルデヒド等のアルデヒド化合物とを酸性触媒下で縮合又は共縮合させて得られるノボラック型フェノール樹脂;上記フェノール性化合物と、ジメトキシパラキシレン、ビス(メトキシメチル)ビフェニル等とから合成されるフェノールアラルキル樹脂、ナフトールアラルキル樹脂等のアラルキル型フェノール樹脂;パラキシリレン及び/又はメタキシリレン変性フェノール樹脂;メラミン変性フェノール樹脂;テルペン変性フェノール樹脂;上記フェノール性化合物と、ジシクロペンタジエンとから共重合により合成されるジシクロペンタジエン型フェノール樹脂及びジシクロペンタジエン型ナフトール樹脂;シクロペンタジエン変性フェノール樹脂;多環芳香環変性フェノール樹脂;ビフェニル型フェノール樹脂;上記フェノール性化合物と、ベンズアルデヒド、サリチルアルデヒド等の芳香族アルデヒド化合物とを酸性触媒下で縮合又は共縮合させて得られるトリフェニルメタン型フェノール樹脂;2-[4-[(2-ヒドロキシ-3-(2’-エチル)ヘキシル)オキシ]-2-ヒドロキシフェニル]-4,6-ビス(2,4-ジメチルフェニル)-1,3,5-トリアジン等のトリアジン型フェノール樹脂;これら2種以上を共重合して得たフェノール樹脂などが挙げられる。
アラルキル型フェノール樹脂の具体例としては、下記一般式(XII)~(XIV)で表されるフェノール樹脂が挙げられる。
式(XII)~(XIV)において、R23は水素原子又は炭素数1~18の1価の有機基を表し、それぞれ全てが同一でも異なっていてもよい。R22、R24、R25及びR28は炭素数1~18の1価の有機基を表し、それぞれ全てが同一でも異なっていてもよい。R26及びR27は水酸基又は炭素数1~18の1価の有機基を表し、それぞれ全てが同一でも異なっていてもよい。iは各々独立に0~3の整数であり、jは各々独立に0~2の整数であり、kは各々独立に0~4の整数であり、pは各々独立に0~4の整数である。nは平均値であり、各々独立に0~10の整数である。
上記一般式におけるR22等ついて記載した「それぞれ全てが同一でも異なっていてもよい」は、例えば、一般式(XII)中のi個のR22の全てが同一でも相互に異なっていてもよいことを意味している。また、R22~R37は、それぞれが同一でも異なっていてもよい。例えば、R22及びR23の全てについて同一でも異なっていてもよい。
第1の態様に係る硬化性樹脂組成物の耐リフロー性の観点から、また、一般式(XIII)中、i及びkは共に0であることが好ましい。
水酸基当量は、JIS K 0070:1992に準拠して測定された水酸基価に基づいて算出された値をいう。
ル型フェノール樹脂の含有率は、60質量%~95質量%であることが好ましく、65質量%~90質量%であることがより好ましい。
第1の態様に係る硬化性樹脂組成物は、上述の成分に加えて、硬化促進剤、無機充填剤、カップリング剤、応力緩和剤、離型剤、着色剤、難燃剤、イオン交換体、エポキシ樹脂以外の樹脂、フェノール系硬化剤以外の硬化剤等の各種添加材を含有してもよい。硬化性樹脂組成物は、以下に例表する添加材以外にも必要に応じて当技術分野で周知の各種添加材を含有してもよい。
第1の態様に係る硬化性樹脂組成物は、硬化促進剤を含有してもよい。硬化促進剤の種類は特に制限されず、エポキシ樹脂の種類、硬化性樹脂組成物の所望の特性等に応じて選択できる。
第三ホスフィン化合物として具体的には、トリフェニルホスフィン、トリブチルホスフィン、ジブチルフェニルホスフィン、ブチルジフェニルホスフィン、エチルジフェニルホスフィン、トリフェニルホスフィン、トリス(4-メチルフェニル)ホスフィン、トリス(4-エチルフェニル)ホスフィン、トリス(4-n-プロピルフェニル)ホスフィン、トリス(4-n-ブチルフェニル)ホスフィン、トリス(イソプロピルフェニル)ホスフィン、トリス(t-ブチルフェニル)ホスフィン、トリス(2,4-ジメチルフェニル)ホスフィン、トリス(2,6-ジメチルフェニル)ホスフィン、トリス(2,4,6-トリメチルフェニル)ホスフィン、トリス(2,6-ジメチル-4-エトキシフェニル)ホスフィン、トリス(4-メトキシフェニル)ホスフィン、トリス(4-エトキシフェニル)ホスフィン等が挙げられる。成形性の観点からは、トリフェニルホスフィン及びトリブチルホスフィンが好ましい。
ホスホニウム化合物以外の硬化促進剤として具体的には、1,5-ジアザビシクロ[4.3.0]ノネン-5(DBN)、1,8-ジアザビシクロ[5.4.0]ウンデセン-7(DBU)等のジアザビシクロアルケン、2-メチルイミダゾール、2-フェニルイミダゾール、2-フェニル-4-メチルイミダゾール、2-ヘプタデシルイミダゾール等の環状アミジン化合物;前記環状アミジン化合物の誘導体;前記環状アミジン化合物又はその誘導体のフェノールノボラック塩;これらの化合物に無水マレイン酸、1,4-ベンゾキノン、2,5-トルキノン、1,4-ナフトキノン、2,3-ジメチルベンゾキノン、2,6-ジメチルベンゾキノン、2,3-ジメトキシ-5-メチル-1,4-ベンゾキノン、2,3-ジメトキシ-1,4-ベンゾキノン、フェニル-1,4-ベンゾキノン等のキノン化合物、ジアゾフェニルメタンなどの、π結合をもつ化合物を付加してなる分子内分極を有する化合物;DBUのテトラフェニルボレート塩、DBNのテトラフェニルボレート塩、2-エチル-4-メチルイミダゾールのテトラフェニルボレート塩、N-メチルモルホリンのテトラフェニルボレート塩等の環状アミジニウム化合物;ピリジン、トリエチルアミン、トリエチレンジアミン、ベンジルジメチルアミン、トリエタノールアミン、ジメチルアミノエタノール、トリス(ジメチルアミノメチル)フェノール等の三級アミン化合物;前記三級アミン化合物の誘導体;酢酸テトラ-n-ブチルアンモニウム、リン酸テトラ-n-ブチルアンモニウム、酢酸テトラエチルアンモニウム、安息香酸テトラ-n-ヘキシルアンモニウム、水酸化テトラプロピルアンモニウム等のアンモニウム塩化合物などが挙げられる。
第1の態様に係る硬化性樹脂組成物は、無機充填材を含有してもよい。硬化性樹脂組成物が無機充填材を含有することで、硬化性樹脂組成物の吸湿性が低減し、硬化状態での強度が向上する傾向にある。硬化性樹脂組成物を半導体パッケージの封止材として用いる場合には、無機充填材を含有することが好ましい。
無機充填材は1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
無機充填材の平均粒子径は、レーザー回折散乱法粒度分布測定装置により、体積平均粒子径(D50)として測定することができる。
体積平均粒子径は、公知の方法によって測定することができる。一例として、有機溶剤、硝酸、王水等を用いて、硬化性樹脂組成物又は樹脂硬化物から無機充填材を抽出し、超音波分散機等で充分に分散して分散液を調製する。この分散液を用いて、レーザー回折散乱法粒度分布測定装置により測定される体積基準の粒度分布から、無機充填材の体積平均粒子径を測定することができる。あるいは、樹脂硬化物を透明なエポキシ樹脂等に埋め込み、研磨して得られる断面を走査型電子顕微鏡にて観察して得られる体積基準の粒度分布から、無機充填材の体積平均粒子径を測定することができる。さらには、FIB装置(集束イオンビームSEM)等を用いて、樹脂硬化物の二次元の断面観察を連続的に行い、三次元構造解析を行なうことで測定することもできる。
無機充填材の含有率が硬化性樹脂組成物全体の30質量%以上であると、樹脂硬化物の熱膨張係数、熱伝導率、弾性率等の特性がより向上する傾向にある。
無機充填材の含有率が硬化性樹脂組成物全体の90質量%以下であると、硬化性樹脂組成物の粘度の上昇が抑制され、流動性がより向上して成形性がより良好になる傾向にある。
第1の態様に係る硬化性樹脂組成物は、カップリング剤を含有してもよい。カップリング剤の種類は特に制限されず、公知のカップリング剤を使用することができる。カップリング剤としては、シランカップリング剤、チタンカップリング剤等が挙げられる。カップリング剤は、1種類を単独で使用しても、2種類以上を併用してもよい。
第1の態様に係る硬化性樹脂組成物は、シリコーンオイル、シリコーンゴム粒子等の応力緩和剤を含有してもよい。硬化性樹脂組成物が応力緩和剤を含有することにより、パッケージの反り変形及びパッケージクラックの発生をより低減させることができる。応力緩和剤としては、一般に使用されている公知の応力緩和剤(可とう剤)が挙げられる。具体的には、応力緩和剤としては、シリコーン系、スチレン系、オレフィン系、ウレタン系、ポリエステル系、ポリエーテル系、ポリアミド系、ポリブタジエン系等の熱可塑性エラストマー、天然ゴム(NR)、アクリロニトリル-ブタジエン共重合体(NBR)、アクリルゴム、ウレタンゴム、シリコーンパウダー等のゴム粒子、メタクリル酸メチル-スチレン-ブタジエン共重合体(MBS)、メタクリル酸メチル-シリコーン共重合体、メタクリル酸メチル-アクリル酸ブチル共重合体等のコア-シェル構造を有するゴム粒子などが挙げられる。応力緩和剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。中でも、シリコーン系応力緩和剤が好ましい。シリコーン系応力緩和剤としては、エポキシ基を有するもの、アミノ基を有するもの、これらをポリエーテル変性したもの等が挙げられる。
有されるエポキシ樹脂100質量部に対して0.1質量部~30質量部であることが好ましく、1質量部~5質量部であることがより好ましい。
第1の態様に係る硬化性樹脂組成物は、成形の際に金型を使用する場合、金型との離型性の観点から、離型剤を含有してもよい。離型剤は特に制限されず、従来公知のものを用いることができる。離型剤としては、カルナバワックス、モンタン酸、ステアリン酸等の高級脂肪酸、高級脂肪酸金属塩、モンタン酸エステル等のエステル系ワックス、酸化ポリエチレン、非酸化ポリエチレン等のポリオレフィン系ワックスなどが挙げられる。離型剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
第1の態様に係る硬化性樹脂組成物は、着色剤を含有してもよい。着色剤としてはカーボンブラック、有機染料、有機顔料、酸化チタン、鉛丹、ベンガラ等の公知の着色剤を挙げることができる。着色剤の含有量は目的等に応じて適宜選択できる。着色剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
第1の態様に係る硬化性樹脂組成物は、難燃剤を含有してもよい。難燃剤は特に制限されず、従来公知のものを用いることができる。難燃剤としては、ハロゲン原子、アンチモン原子、窒素原子又はリン原子を含む有機又は無機の化合物、金属水酸化物等が挙げられる。難燃剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
第1の態様に係る硬化性樹脂組成物は、イオン交換体を含有してもよい。硬化性樹脂組成物を半導体パッケージの封止材として用いる場合には、封止される素子を備える電子部品装置の耐湿性及び高温放置特性を向上させる観点から、イオン交換体を含有することが好ましい。
イオン交換体は特に制限されず、従来公知のものを用いることができる。具体的には、ハイドロタルサイト化合物、並びに、マグネシウム、アルミニウム、チタン、ジルコニウム及びビスマスからなる群より選ばれる少なくとも1種の元素の含水酸化物等が挙げられる。イオン交換体は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。具体的には、イオン交換体としては、下記一般式(A)で表されるハイドロタルサイトが挙げられる。
(0<X≦0.5、mは正の数)
第1の態様に係る硬化性樹脂組成物は、エポキシ樹脂以外の樹脂を含有してもよい。エポキシ樹脂以外の樹脂の種類は特に制限されず、硬化性樹脂組成物の成分として一般に使用されているものから選択できる。エポキシ樹脂以外の樹脂は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
エポキシ樹脂以外の樹脂としては、チオール樹脂、ユリア樹脂、メラミン樹脂、ウレタン樹脂、シリコーン樹脂、マレイミド樹脂、不飽和ポリエステル樹脂等が挙げられる。
第1の態様に係る硬化性樹脂組成物は、フェノール系硬化剤以外の硬化剤を含有してもよい。フェノール系硬化剤以外の硬化剤の種類は特に制限されず、硬化性樹脂組成物の成分として一般に使用されているものから選択できる。フェノール系硬化剤以外の硬化剤は、1種類を単独で用いても2種類以上を組み合わせて用いてもよい。
フェノール系硬化剤以外の硬化剤としては、アミン系硬化剤、酸無水物系硬化剤、ポリメルカプタン系硬化剤、ポリアミノアミド系硬化剤、イソシアネート系硬化剤、ブロックイソシアネート系硬化剤等が挙げられる。
アミン系硬化剤の活性水素当量は、JIS K 7237:1995に準拠して測定されたアミン価に基づいて算出された値をいう。
硬化性樹脂組成物の製造方法は、特に制限されない。一般的な手法としては、所定の配合量の成分をミキサー等によって十分混合した後、ミキシングロール、押出機等によって溶融混練し、冷却し、粉砕する方法を挙げることができる。より具体的には、例えば、上述した成分の所定量を均一に攪拌及び混合し、予め70℃~140℃に加熱してあるニーダー、ロール、エクストルーダー等で混練し、冷却し、粉砕する方法を挙げることができる。
第2の態様に係る硬化性樹脂組成物は、硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、70℃、80℃及び90℃の各温度におけるtanδの値の合計が、0.600超である。
本開示の硬化性樹脂組成物によれば、温度85℃、相対湿度85%、168時間の条件(MSLレベル1に相当)による加熱加湿後であっても、優れた耐リフロー性を示し、これは驚くべきものである。
支持部材との接着性の観点から、ガラス転移温度以上の熱膨張係数(CTE2)は、10ppm/℃~45ppm/℃が好ましく、12ppm/℃~40ppm/℃がより好ましく、15ppm/℃~38ppm/℃がさらに好ましい。
第1の態様に係る硬化性樹脂組成物及び第2の態様に係る硬化性樹脂組成物の用途は特に制限されず、例えば電子部品装置の封止材として種々の実装技術に用いることができる。また、硬化性樹脂組成物は、各種モジュール用樹脂成形体、モーター用樹脂成形体、車載用樹脂成形体、電子回路用保護材用封止材等、樹脂組成物が良好な流動性及び硬化性を有することが望ましい種々の用途に用いることができる。
本開示の電子部品装置は、素子と、素子を封止する第1の態様に係る硬化性樹脂組成物又は第2の態様に係る硬化性樹脂組成物の樹脂硬化物とを備える。
支持部材としては、リードフレーム、配線済みのテープキャリア、配線板、ガラス、シリコンウエハ、有機基板等が挙げられる。上記支持部材の中でも、上記硬化性樹脂組成物の樹脂硬化物との接着性の観点からリードフレームが好ましい。
粗面化方法は、特に限定されるものではなく、アルカリ処理、シランカップリング処理、サンドマット処理、プラズマ処理、コロナ放電処理等が挙げられる。
また、上記めっき層は、単層であっても、多層であってもよい。多層のめっき層としては、リードフレーム側から、Niめっき層、Pdめっき層及びAuめっき層が積層された3層構成のめっき層等が挙げられる。
上記3層構成のリードフレームとしては、例えば、PPF(Pre Plating Lead Flame)と呼ばれる銅リードフレームにNi-Pd-Auめっきを施したリードフレームが挙げられる。
(1)リードフレーム上に素子を固定し、ボンディングパッド等の素子の端子部とリード部とをワイヤボンディング、バンプ等を用いて接続した後、硬化性樹脂組成物を用いて封止した構造を有するDIP(Dual Inline Package)、PLCC(Plastic Leaded Chip Carrier)、QFP(Quad Flat Package)、SOP(Small Outline Package)、SOJ(Small Outline J-lead Package)、TSOP(Thin Small Outline Package)、TQFP(Thin Quad Flat Package)等の一般的な樹脂封止型IC;
(2)テープキャリアにバンプを用いて接続した素子を、硬化性樹脂組成物を用いて封止した構造を有するTCP(Tape Carrier Package);
(3)支持部材上に形成した配線に、ワイヤボンディング、フリップチップボンディング、はんだ等を用いて接続した素子を、硬化性樹脂組成物を用いて封止した構造を有するCOB(Chip On Board)モジュール、ハイブリッドIC、マルチチップモジュール等;
(4)裏面に配線板接続用の端子を形成した支持部材の表面に素子を搭載し、バンプ又はワイヤボンディングを用いて素子と支持部材に形成された配線とを接続した後、硬化性樹脂組成物を用いて素子を封止した構造を有するBGA(Ball Grid Array)、CSP(Chip Size Package)、MCP(Multi Chip Package)、SiP(System in a Package)等
表1に示す配合の材料を予備混合(ドライブレンド)した後、二軸ロール(ロール表面温度:約80℃)で約15分間混練し、冷却し、粉砕して粉末状の硬化性樹脂組成物を製造した。
・エポキシ樹脂C:ビフェニルアラルキル型エポキシ樹脂、エポキシ当量284g/eq
・フェノール系硬化剤B:トリフェニルメタン型フェノール樹脂、水酸基当量95g/eq
・フェノール系硬化剤C:アラルキル型フェノール樹脂、水酸基当量203g/eq
・フェノール系硬化剤D:メラミン変性フェノール樹脂、水酸基当量120g/eq、軟化点:90℃
・フェノール系硬化剤E:トリアジン型フェノール樹脂、2-[4-[(2-ヒドロキシ-3-(2’-エチル)ヘキシル)オキシ]-2-ヒドロキシフェニル]-4,6-ビス(2,4-ジメチルフェニル)-1,3,5-トリアジン、BASF社、商品名「Tinuvin(登録商標)405」
・フェノール系硬化剤F:ノボラック型フェノール樹脂、水酸基当量223g/eq
・フェノール系硬化剤G:ノボラック型フェノール樹脂、水酸基当量156g/eq
・カップリング剤B:3-グリシドキシプロピルトリメトキシシラン
・カップリング剤C:直鎖状ポリシロキサン、融点:-70℃、エポキシ当量120g/eq~150g/eq
・カップリング剤D:テトラスルフィドジトリエトキシシラン
・応力緩和剤B:インデン含有共重合体
・応力緩和剤C:フェニル基含有シリコーンレジン
・無機充填剤B:平均粒子径0.6μmのシリカフィラー
・無機充填剤C:平均粒子径50nm以下のシリカフィラー
・無機充填剤D:平均粒子径1.2μmのマグネシウム及び亜鉛を含む金属水酸化物
実施例及び比較例において製造した硬化性樹脂組成物の特性を次の特性試験により評価した。評価結果を表1に示す。
なお、硬化性樹脂組成物を用いた樹脂硬化物の作製は、明記しない限りトランスファ成形機により、金型温度175℃、成形圧力8.3MPa、硬化時間120秒の条件で成形した後、175℃で5時間の条件で後硬化を行うことにより行った。
3.2mm×2.2mm×0.37mmのシリコンチップを5.2mm×4.1mmのダイパッドに搭載した28ピンのSO(Small Outline)パッケージ(リードフレーム材質:銅合金、Ni-Pd-Auメッキ処理品)を、硬化性樹脂組成物を用いて成形し、次いで175℃で5時間の条件で後硬化した。
得られた成形品の外部のクラックなきことを目視で、内部の剥離発生のなきことを超音波探傷装置(株式会社日立製作所製、FS-200)でそれぞれ確認した。成形品を125℃で12時間乾燥後、温度85℃、相対湿度85%の条件で168時間加湿した。
その後、JEDECの規定に準拠し、温度条件を260℃に設定し、同一温度で3回リフロー処理を行い、パッケージ外部のクラック有無を目視で、パッケージ内部の剥離発生の有無を超音波探傷装置でそれぞれ観察した。試験パッケージ数に対する、クラック及び剥離のいずれかが発生したパッケージ数の割合で耐リフロー性を評価した。評価結果を表1にまとめた。
(評価基準)
A:クラック及び剥離の発生が0%
B:クラック及び剥離の発生が0%超、60%未満
C:クラック及び剥離の発生が60%以上、100%未満
D:クラック及び剥離の発生が100%
上記条件に基づいて、上記実施例及び比較例において得られた硬化性樹脂組成物の樹脂硬化物を作製した。樹脂硬化物は、短辺5mm、長辺50mm、厚さ2mmの長方形形状を有する樹脂硬化物とした。
上記樹脂硬化物に対し、試験モード:3点曲げモード、測定温度:25℃~330℃、昇温速度:10℃/分、試験周波数:1Hzの条件で動的粘弾性測定を実施し、得られたチャート(縦軸:tanδ、横軸:温度)から貯蔵粘弾性の値を求め、表1にまとめた。
また、上記チャートから、(1)tanδが最大となる温度(ガラス転移温度)、(2)ガラス転移温度におけるtanδの値、(3)220℃、230℃、240℃及び250℃の各温度におけるtanδの値の合計(表1中では、tanδ合計220℃~250℃と記載)、(4)70℃、80℃及び90℃の各温度におけるtanδの値の合計(表1中では、tanδ合計70℃~90℃と記載)及び(5)ガラス転移温度におけるtanδの値を100としたとき、ガラス転移温度より10度低い温度におけるtanδの値(表1中では、tanδ比と記載)を求め、表1にまとめた。
上記条件に基づいて、上記実施例及び比較例において得られた硬化性樹脂組成物の樹脂硬化物を作製した。樹脂硬化物は、φ4mm×20mmの樹脂硬化物とした。
次いで、JIS K 7197:2012に基づいて熱機械分析法により、樹脂硬化物の歪みを温度に対してプロットした場合の接線の傾きを、10℃~30℃の範囲において求めた。測定結果を表1にまとめた。
なお、試験荷重は15g、昇温速度は5℃/分として測定した。
また、線膨張率の測定には、セイコーインスルツメンツ株式会社製のTMA高精度二試料熱分析装置(装置名SS6100)を使用した。
上記条件に基づいて、上記実施例及び比較例において得られた硬化性樹脂組成物の樹脂硬化物を作製した。樹脂硬化物は、短辺5.1mm、長辺20mm、厚さ2mmの長方形形状を有する硬化物とした。
次いで、温度85℃、相対湿度85%の条件下に、上記樹脂硬化物を168時間静置した。
静置後の樹脂硬化物の質量(g)を測定し、静置前の樹脂硬化物の質量(g)からの増加率(%)を求めた。結果を表1にまとめた。
EMMI-1-66に準じたスパイラルフロー測定用金型を用いて、実施例及び比較例において得られた硬化性樹脂組成物を金型温度180℃、成形圧力6.9MPa、硬化時間90秒の条件で成形し、流動距離(cm)を求めた。測定結果を表1にまとめた。
Claims (7)
- 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、(1)tanδが最大となる温度が、120℃未満であり、(2)tanδの最大値が、0.400超であり、且つ(3)220℃、230℃、240℃及び250℃の各温度におけるtanδの値の合計が、0.400超である、硬化性樹脂組成物。
- 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより得られる縦軸をtanδ及び横軸を30℃~260℃の温度とするチャートにおいて、70℃、80℃及び90℃の各温度におけるtanδの値の合計が、0.600超である、硬化性樹脂組成物。
- 前記チャートにおけるtanδの最大値を100としたとき、tanδが最大となる温度-10℃の少なくともいずれかの温度におけるtanδの値が60超である、請求項1又は請求項2に記載の硬化性樹脂組成物。
- 硬化性樹脂組成物の樹脂硬化物に対して動的粘弾性測定を行うことにより求められる260℃における貯蔵粘弾性が、450MPa以下である、請求項1~請求項3のいずれか一項に記載の硬化性樹脂組成物。
- エポキシ樹脂と、フェノール系硬化剤とを、前記エポキシ樹脂のエポキシ基に対する前記フェノール系硬化剤のフェノール性水酸基の当量比0.5以上、1.0未満で、含有する、請求項1~請求項4のいずれか一項に記載の硬化性樹脂組成物。
- 素子と、前記素子を封止する請求項1~請求項5のいずれか一項に記載の硬化性樹脂組成物の樹脂硬化物とを備える、電子部品装置。
- 前記素子を一方の面に搭載する支持部材をさらに備える、請求項6に記載の電子部品装置。
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