WO2017073393A1 - 樹脂組成物、接合体及び半導体装置 - Google Patents
樹脂組成物、接合体及び半導体装置 Download PDFInfo
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- WO2017073393A1 WO2017073393A1 PCT/JP2016/080704 JP2016080704W WO2017073393A1 WO 2017073393 A1 WO2017073393 A1 WO 2017073393A1 JP 2016080704 W JP2016080704 W JP 2016080704W WO 2017073393 A1 WO2017073393 A1 WO 2017073393A1
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- Prior art keywords
- silver
- resin
- resin composition
- coated particles
- young
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- 125000000524 functional group Chemical group 0.000 claims abstract description 18
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- 239000010410 layer Substances 0.000 description 59
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/52—Mounting semiconductor bodies in containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32225—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
Definitions
- the present invention relates to a resin composition that can be used, for example, when a semiconductor element is mounted on an insulated circuit board or the like, a bonded body bonded using the resin composition, and a semiconductor device.
- This application claims priority based on Japanese Patent Application No. 2015-221947 filed in Japan on October 29, 2015 and Japanese Patent Application No. 2016-150723 filed on July 29, 2016 in Japan. , The contents of which are incorporated herein.
- Semiconductor devices such as LEDs and power modules have a structure in which a semiconductor element is bonded on a circuit layer made of a conductive material.
- Power semiconductor elements for high power control used for controlling wind power generation, electric vehicles, hybrid vehicles, and the like generate a large amount of heat. Therefore, as a substrate on which the power semiconductor element is mounted, for example, a ceramic substrate made of AlN (aluminum nitride), Al 2 O 3 (alumina), etc., and a metal having excellent conductivity on one surface of the ceramic substrate.
- a power module substrate including a circuit layer formed by disposing has been widely used.
- a power joule substrate a substrate having a metal layer formed on the other surface of a ceramic substrate is also provided.
- a resin composition such as a conductive adhesive may be used. Since the resin composition is cured by heat or the like, a member or the like can be bonded by applying the resin composition to a portion to be bonded and then curing the resin composition. Generally as such a resin composition, the resin composition containing binder resin and electroconductive particle is known.
- Patent Document 1 discloses a resin composition using a resin mainly composed of an epoxy resin as a binder resin and silver powder as conductive particles.
- the stress of the adhesive layer formed by curing the resin composition is reduced by further adding an epoxidized butadiene-styrene copolymer as a resin binder.
- Patent Document 2 discloses a resin composition containing an epoxy compound as a binder resin and using nickel powder or silver plating powder as conductive particles.
- the deterioration of conductivity due to heat cycle is suppressed by using an organometallic complex of titanium or zirconium as a catalyst for curing the binder resin.
- the present invention has been made in view of the above circumstances, and is a resin composition capable of forming an adhesive layer in which local concentration of thermal stress is relaxed, and a bonded body and a semiconductor bonded using the resin composition
- An object is to provide an apparatus.
- a resin composition according to one embodiment of the present invention includes a binder resin and silver-coated particles having functional groups introduced on the surface thereof, and the Young's modulus of the silver-coated particles.
- the ratio (a / b) between (a) and the Young's modulus (b) of the binder resin after curing is 0.1 to 2.0, and the Young's modulus (a) of the silver-coated particles is 0.05 to 2.0. It is characterized by 2.0 GPa.
- the ratio (a / b) between the Young's modulus (a) of the silver-coated particles and the Young's modulus (b) of the binder resin after curing is 0.1 to 2.0. Therefore, there is no significant difference between the Young's modulus of the binder resin and the Young's modulus of the silver-coated particles, and it is possible to suppress the local concentration of thermal stress and to suppress the occurrence of cracks in the adhesive layer. can do. Further, since the Young's modulus (a) of the silver-coated particles is 0.05 to 2.0 GPa, it is possible to secure the rigidity of the adhesive layer and to suppress the adhesive layer from becoming harder than necessary.
- the ratio (a / b) between the Young's modulus (a) of the silver-coated particles and the Young's modulus (b) of the binder resin after curing is 0.
- the Young's modulus (a) of the silver-coated particles is preferably 0.2 to 2.0 GPa.
- the ratio (a / b) between the Young's modulus (a) of the silver-coated particles and the Young's modulus (b) of the binder resin after curing is 0.4 to 2.0, the thermal stress Can be further suppressed from being concentrated locally, and the occurrence of cracks in the adhesive layer can be reliably suppressed.
- the Young's modulus (a) of the silver-coated particles is 0.05 to 2.0 GPa, the rigidity of the adhesive layer can be further secured, and the adhesive layer can be reliably suppressed from becoming harder than necessary. .
- the functional group is selected from the group consisting of an epoxy group, a carboxyl group, a carbonyl group, an amino group, an amide group, an imino group, an imidazole group, and a mercapto group. It is preferable.
- the functional group introduced on the surface of the silver-coated particles is excellent in affinity with the binder resin, and can improve the adhesion between the binder resin and the silver-coated particles.
- the joined body which is one embodiment of the present invention is a joined body in which a first member and a second member are joined, and the resin composition described above is interposed between the first member and the second member. It is characterized by interposition. According to the joined body having this configuration, since the resin composition described above is interposed between the first member and the second member, the resin composition can be used even when a heat cycle is applied to the joined body. Generation of cracks is suppressed, and the bonding reliability between the first member and the second member is excellent.
- a semiconductor device includes an insulating circuit substrate in which a circuit layer is provided on one surface of an insulating layer, and a semiconductor element bonded to a surface of the circuit layer opposite to the insulating layer. And the above-mentioned resin composition is interposed between the circuit layer and the semiconductor element. According to the semiconductor device having this configuration, since the resin composition described above is interposed between the circuit layer and the semiconductor element, cracks in the resin composition can be obtained even when a heat cycle is applied to the semiconductor device. Is suppressed, and the junction reliability between the circuit layer and the semiconductor element is excellent.
- the present invention it is possible to provide a resin composition capable of forming an adhesive layer in which local concentration of thermal stress is relaxed, and a joined body and a semiconductor device joined using the resin composition.
- the resin composition of this embodiment has a binder resin and silver-coated particles, and is roughly configured.
- the resin composition of the present embodiment is cured by heating to form an adhesive layer.
- the resin composition of this embodiment may contain a diluent (solvent).
- the resin composition containing a diluent has improved fluidity and can be easily applied to a portion where an adhesive layer such as the first member or the second member is formed.
- the binder resin forms an adhesive layer by being cured by crosslinking or volatilization of the diluent.
- the binder resin is not particularly limited as long as it is a resin that can form an adhesive layer by being cured.
- Specific examples of the binder resin include epoxy resins, phenol resins, urethane resins, silicone resins, acrylic resins, polyimide resins, and resins obtained by modifying these.
- Binder resin may use the said resin independently, and may use 2 or more types together. Further, the binder resin may contain a thermoplastic resin.
- ⁇ Binder resin in resin composition examples include bisphenol type, biphenyl type, biphenyl mixed type, naphthalene type, cresol novolac type, dicyclopentadiene type, trisphenol ethane type, and tetraphenol ethane type epoxy resin. Can be mentioned.
- Examples of the epoxy resin curing agent include commonly used imidazoles, tertiary amines, or Lewis acids containing boron fluoride, or compounds thereof, phenolic curing agents, acid anhydride curing agents, dicyandiamide, and the like. Latent curing agents are preferred.
- Examples of imidazoles include 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-phenyl-4,5-dihydroxymethylimidazole, 2-phenyl-4 -Methyl-5-hydroxymethylimidazole, 2-phenylimidazole isocyanuric acid adduct and the like.
- Tertiary amines include piperidine, benzyldiamine, diethylaminopropylamine, isophoronediamine, diaminodiphenylmethane, and the like.
- the Lewis acid containing boron fluoride includes an amine complex of boron fluoride such as boron fluoride monoethylamine.
- the phenolic curing agent include phenol novolac resin, paraxylylene phenol resin, and dicyclopentadiene phenol resin.
- Examples of the acid anhydride curing agent include phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride and the like.
- Curing accelerators include imidazoles such as 1-benzyl-2-methylimidazole and salts thereof, tertiary amines such as 1,8-diazabicyclo [5.4.0] undec-7-ene and salts thereof, triphenyl Examples thereof include organic phosphine compounds such as phosphine and salts thereof, organic metal salts such as zinc octylate, tin octylate and alkoxytitanium, and noble metals such as platinum and palladium.
- the phenol resin as the binder resin to be included in the resin composition may have any structure as long as it is a thermosetting type, but it is preferable that the molar ratio of formaldehyde / phenol is in the range of 1 to 2.
- the thermosetting phenol resin preferably has a weight average molecular weight of 300 to 5,000, more preferably 1,000 to 4,000.
- urethane resin as the binder resin to be included in the resin composition
- those generally used for bonding can be used.
- Specific examples include polyol urethane resins, polyester urethane resins, polycaprolactam urethane resins, polyether urethane resins, polycarbonate urethane resins, urethane acrylate resins, and the like.
- curing agents such as isocyanate and block isocyanate, can be added as needed.
- silicone resin as the binder resin to be included in the resin composition
- any structure of addition type or condensation type can be used as long as it is generally used for bonding.
- Specific examples of the silicone resin include various organopolysiloxanes, modified polysiloxanes, elastomer-modified polysiloxanes, room temperature curable silicone rubbers, and the like, and these can be used alone or in combination.
- thermosetting, photopolymerization, and solvent evaporation types can be used as the acrylic resin as the binder resin to be included in the resin composition.
- examples include acrylic-melamide resins, polymethyl methacrylate resins, acrylic-styrene copolymers, silicone-modified acrylic resins, epoxy-modified acrylic resins, and the like, and these can be used alone or in combination.
- a thermosetting agent such as isocyanate, an alkylphenone photopolymerization initiator, or the like can be used as the curing agent.
- polyimide resin can be used as the binder resin to be included in the resin composition.
- aromatic polyimide, alicyclic polyimide, polyimide siloxane, epoxy-modified polyimide, photosensitive polyimide and the like can be mentioned, and these can be used alone or in combination.
- the above-mentioned epoxy resin, phenol resin, urethane resin, acrylic resin, silicone resin or polyimide resin can suppress quality deterioration due to aging of the resin composition, and at the same time has a rigid skeleton in the main chain, and the cured product is heat resistant. In addition, the durability of the electrode to be formed can be improved because of its excellent moisture resistance.
- the ratio of the binder resin in the resin composition is preferably in the range of 25 to 75% by volume in terms of the volume ratio in the cured product. When the ratio of the binder resin is less than the lower limit, problems such as poor adhesion occur. Exceeding the upper limit causes problems such as a decrease in conductivity.
- Diluents include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono-n-butyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether Ether alcohol solvents such as dipropylene glycol monobutyl ether and tripropylene glycol monomethyl ether and their acetate solvents, ethylene glycol, propylene glycol, terpineol, mineral spirits, aromatic hydrocarbon solvents such as toluene, dodecane, etc.
- Aliphatic hydrocarbon solvent dimethylformamide, N-methyl-2 Pyrrolidone, dimethyl sulfoxide, diacetone alcohol, dimethylacetamide, .gamma.-butyrolactone, water, such as reactive diluents are exemplified. These are selected depending on the compatibility with the binder resin. In the case of silicone resin, mineral spirit and toluene, in the case of polyimide resin, N-methyl 2-pyrrolidone, phenol resin, urethane resin, and epoxy resin, ethyl carbitol acetate and butyl carbitol acetate. ⁇ -terpineol is particularly preferred. These solvents can be used alone or in combination of two or more.
- Additives can be mixed with the binder resin and the mixture thereof as long as the conductivity, thermal conductivity, adhesion, and shape retention are not impaired.
- the additive include a silane coupling agent, a titanium coupling agent, silver nanoparticles, a thickener, a dispersant, a flame retardant, an antifoaming agent, and an antioxidant.
- the Young's modulus of the binder resin after curing is preferably 0.1 to 5.0 GPa, more preferably 0.5 to 2.0 GPa.
- the Young's modulus of the binder resin is 0.1 GPa or more, deformation of the bonded body can be suppressed when an external force is applied to the bonded body.
- the Young's modulus of the binder resin is 5.0 GPa or less, the thermal stress at the time of temperature change can be relaxed.
- the Young's modulus of the binder resin after curing can be measured, for example, by the following method. First, a solvent containing a binder resin is applied onto a substrate using a roll coater or a bar coater, and then the binder resin is cured by heating to form a binder resin film (adhesive layer) on the substrate. Next, the Young's modulus of the film formed can be measured using a micro-indentation hardness tester (for example, “ENT-1100” manufactured by Elionix Co., Ltd.).
- a micro-indentation hardness tester for example, “ENT-1100” manufactured by Elionix Co., Ltd.
- the silver-coated particles impart conductivity and thermal conductivity to the resin composition.
- the silver-coated particles were introduced into the core particles (mother particles), the tin adsorption layer provided on the surface of the particles, the silver coating layer coated on the surface of the tin adsorption layer, and the surface of the silver coating layer And a functional group.
- the shape of the particles is selected depending on the desired rheological properties of the resin composition. For example, a perfect spherical particle, a particle having an almost spherical shape such as an ellipse, a particle having a slight unevenness on the surface, a flat particle, Scalpel-like particles, rod-like particles, and the like are included.
- the particles are not particularly limited, and specific examples include acrylic resin particles, styrene resin particles, phenol resin particles, silicone resin particles, silicone rubber particles, polyimide resin particles, and fluorine rubber particles.
- the average particle size of the resin particles is preferably 0.5 to 40 ⁇ m.
- the particle size distribution of the resin particles varies depending on the desired rheological properties of the silver-coated particle-containing resin composition, and the particle size distribution is broad within a certain range to impart thixotropy to the silver-coated particle-containing resin composition. Is preferred.
- the average particle size of the resin particles By setting the average particle size of the resin particles to 0.5 ⁇ m or more, the surface area of the resin particles is reduced. Therefore, it is possible to reduce the silver content for obtaining conductivity and thermal conductivity necessary as the conductive and thermal conductive filler. Moreover, it becomes easy to apply a silver coating particle containing resin composition to various application
- the average particle diameter is measured by the following method. First, using a scanning electron microscope (for example, “SU-1500” manufactured by Hitachi High-Technologies Corporation), 300 resin particles at a magnification of 2000 to 5000 times are obtained with software (product name: PC SEM, etc.). Measure the diameter. Next, an average value of the diameters of the resin particles is calculated from the obtained measured values to obtain an average particle diameter.
- a scanning electron microscope for example, “SU-1500” manufactured by Hitachi High-Technologies Corporation
- a tin adsorption layer is provided on the surface of the resin particles.
- the tin adsorption layer contains divalent ions of tin.
- the coating amount (content) of silver is determined by the average particle diameter of the resin particles and the desired conductivity.
- the silver coating amount is, for example, preferably 2 to 88 parts by mass and more preferably 2 to 80 parts by mass with respect to 100 parts by mass of the silver-coated particles. preferable.
- the silver content is 2 parts by mass or more with respect to 100 parts by mass of the silver-coated particles, when the silver-coated particles are dispersed as the conductive filler, it is easy to take contact between the silver particles, and sufficient conductivity is obtained. Can be granted.
- the silver content is 88 parts by mass or less, the specific gravity becomes relatively small, and an increase in cost can be suppressed.
- the powder volume resistance is preferably 1 ⁇ 10 ⁇ 2 ⁇ ⁇ cm or less, and more preferably 3 ⁇ 10 ⁇ 3 ⁇ ⁇ cm or less.
- the resistance value is lowered, which is suitable as a conductive material and a heat conductive material.
- the powder volume resistance is obtained by putting sample powder (silver-coated particles) into a pressure vessel and then compressing it at 9.8 MPa to obtain a green compact, and the resistance value of the green compact is measured by a digital multimeter. Value.
- the resistance value in the compression direction is preferably 100 ⁇ or less. Further, when one silver-coated particle is compressed 50% of the particle diameter in one direction, the resistance value in the compression direction is preferably 10 ⁇ or less.
- a functional group is introduced on the surface of the silver coating layer by using a surface treatment agent (coating agent) or the like.
- a functional group introduced into the surface of the silver coating layer a functional group having a high affinity with the binder resin is preferable. Specific examples include an epoxy group, a carboxyl group, a carbonyl group, an amino group, an amide group, an imino group, an imidazole group, and a mercapto group.
- the Young's modulus of the silver-coated particles is preferably 0.05 to 2.0 GPa, more preferably 0.2 to 2.0 GPa, and particularly preferably 0.5 to 1.5 GPa.
- the Young's modulus of the silver-coated particles is 0.05 GPa or more, deformation of the silver-coated particles is suppressed when the resin composition is kneaded, internal residual stress is reduced, and generation of voids and cracks is suppressed.
- the Young's modulus of the silver-coated particles is 2.0 GPa or less, the Young's modulus of the resin composition coating film is maintained at a certain value or less, and the thermal stress at the time of temperature change is reduced.
- the Young's modulus of the silver-coated particles can be measured using, for example, a micro compression tester (for example, “MCT-2000” manufactured by Shimadzu Corporation).
- the ratio (a / b) between the Young's modulus (a) of the silver-coated particles and the Young's modulus (b) of the binder resin after curing is 0.4 to 2.0. Is more preferable, and 0.6 to 1.5 is more preferable.
- the Young's modulus ratio (a / b) in the range of 0.4 to 2.0, an adhesive layer in which local concentration of thermal stress is relaxed can be formed. Therefore, the adhesive layer formed by the resin composition of this embodiment is excellent in heat cycle resistance.
- the tin compound stannous chloride, stannous fluoride, stannous bromide, stannous iodide, or the like can be used.
- the content of stannous chloride in the tin compound aqueous solution is preferably 30 to 100 g / dm 3 . If the content of stannous chloride is 30 g / dm 3 or more, it is easy to form a uniform tin adsorption layer. Moreover, it is easy to suppress the amount of inevitable impurities in stannous chloride as the content of stannous chloride is 100 g / dm 3 or less. Note that stannous chloride can be contained in an aqueous solution of a tin compound until saturation.
- the aqueous solution of tin compound preferably contains 0.5 to 2 cm 3 of hydrochloric acid with respect to 1 g of stannous chloride.
- the amount of hydrochloric acid is 0.5 cm 3 or more, the solubility of stannous chloride can be improved and the hydrolysis of tin can be suppressed.
- the amount of hydrochloric acid is 2 cm 3 or less, the pH of the tin compound aqueous solution does not become too low, so that tin can be efficiently adsorbed to the resin particles.
- the temperature of the tin compound aqueous solution may be 20 to 45 ° C., preferably 20 to 35 ° C., more preferably 25 to 35 ° C., and most preferably 27 to 35 ° C.
- the temperature of the aqueous solution of the tin compound may be 20 to 45 ° C., preferably 20 to 35 ° C., more preferably 25 to 35 ° C., and most preferably 27 to 35 ° C.
- the stirring time is appropriately determined depending on the temperature of the tin compound aqueous solution and the content of the tin compound, but is preferably 0.5 to 24 hours.
- a surface of the tin adsorption layer is coated with silver by an electroless plating method to form a silver coating layer.
- silver-coated particles are obtained.
- the electroless plating method (1) a method in which resin particles provided with a tin adsorption layer are immersed in an aqueous solution containing a complexing agent, a reducing agent, etc., and a silver salt aqueous solution is dropped, (2) a silver salt, complex A method in which a resin particle provided with a tin adsorption layer is immersed in an aqueous solution containing an agent, and a reducing agent aqueous solution is dropped.
- a tin adsorption layer is added to an aqueous solution containing a silver salt, a complexing agent, a reducing agent, etc. And a method of dipping the provided resin particles and dropping a caustic aqueous solution.
- silver salt silver nitrate or a solution obtained by dissolving silver in nitric acid
- Complexing agents include ammonia, ethylenediaminetetraacetic acid, tetrasodium ethylenediaminetetraacetic acid, nitrotriacetic acid, triethylenetetraamminehexaacetic acid, sodium thiosulfate, succinate, imino succinate, citrate or iodide salts, etc.
- reducing agent formalin, glucose, imidazole, Rochelle salt (sodium potassium tartrate), hydrazine and its derivatives, hydroquinone, L-ascorbic acid or formic acid can be used.
- formaldehyde is preferable, a mixture of two or more reducing agents including at least formaldehyde is more preferable, and a mixture of reducing agent including formaldehyde and glucose is most preferable.
- the surface of the silver-coated particles is cleaned with an alkaline cleaning solution and then vacuum-dried. Thereafter, a surface treatment agent is added to the dried silver-coated particles and kneaded to introduce functional groups onto the surface of the silver-coated particles.
- an epoxy group-containing silane coupling agent for example, when an epoxy group is introduced on the surface of the silver-coated particle, an epoxy group-containing silane coupling agent, a carboxy group-containing glycidyl ether, an amino group-containing glycidyl ether, or the like can be used.
- fats such as hardened castor oil, propionic acid, lauric acid, hydroxylauric acid, myristic acid, hydroxymyristic acid, palmitic acid, hydroxypalmitic acid , Fatty acids such as stearic acid, hydroxystearic acid, acrylic acid, oleic acid, linoleic acid, hydroxy fatty acids and salts thereof, and solutions containing them can be used.
- the above-described surface treatment agent for introducing a carboxyl group, urea, fatty acid esters, aromatic esters, low molecular weight urethane and the like can be used.
- an amino group an amino group-containing silane coupling agent
- an aliphatic amine such as hexylamine
- a diamine such as hexamethylenediamine
- an amide group when introducing an amide group
- Coupling agents, acrylamides, peptides, and fatty acid amides such as N, N-dimethylformamide and acetamide can be used.
- an imino group-containing silane coupling agent When introducing an imino group, an imino group-containing silane coupling agent, guanidine, amidines, polyethyleneimine, and the like can be used.
- an imidazole group alkyl imidazoles such as imidazole and methylimidazole, phenyl imidazole, halogenated imidazole, imidazole carboxylic acid, hydroxymethylimidazole, imidazolium salt, various imidazole derivatives and salts thereof can be used.
- a mercapto group-containing silane coupling agent alkanethiols such as dodecanethiol, alkyl disulfide compounds such as octadecyl disulfide, thioglycolic acid or salts thereof, thioacetic acid and salts thereof, and the like can be used. .
- a binder resin, a thermosetting agent, and a curing accelerator are added to the solvent, and the resulting mixture is stirred to prepare a binder mixed solution.
- the curing agent and the curing accelerator need not be mixed if they are already blended or can be used only by solvent drying.
- ethylene glycol monoethyl ether ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono-n-butyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, dipropylene glycol Ether alcohol solvents such as monomethyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monomethyl ether and their acetate solvents, ethylene glycol, propylene glycol, terpineol, mineral spirits, aromatic hydrocarbon solvents, aliphatic hydrocarbons Based on the compatibility with the resin. Is determined, it can be used in plural kinds of singly or in combination.
- the resin composition of this embodiment is produced by kneading the silver-coated particles having a functional group introduced into the surface prepared in the previous step and the binder mixed solution with a planetary stirrer, a three-roll mill, or the like. be able to.
- the power module 1 includes a power module substrate 10 on which a circuit layer 12 is disposed, a semiconductor element 3 bonded to the surface of the circuit layer 12 via a conductive bonding layer 30 (adhesive layer), a cooler 40, It has.
- the power module substrate 10 includes a ceramic substrate 11 constituting an insulating layer, a circuit layer 12 disposed on one surface of the ceramic substrate 11 (upper surface in FIG. 1), and the other surface of the ceramic substrate 11 (FIG. 1 and a metal layer 13 disposed on the lower surface.
- the ceramic substrate 11 prevents electrical connection between the circuit layer 12 and the metal layer 13, and is made of highly insulating AlN (aluminum nitride). Further, the thickness of the ceramic substrate 11 is set within a range of 0.2 to 1.5 mm, and in this embodiment is set to 0.635 mm.
- the circuit layer 12 is formed by bonding a conductive metal plate to one surface of the ceramic substrate 11.
- the circuit layer 12 is formed by joining an aluminum plate made of a rolled plate of aluminum (so-called 4N aluminum) having a purity of 99.99 mass% or more to the ceramic substrate 11.
- the metal layer 13 is formed by bonding a metal plate to the other surface of the ceramic substrate 11.
- the metal layer 13 is formed by bonding an aluminum plate made of a rolled plate of aluminum (so-called 4N aluminum) having a purity of 99.99 mass% or more to the ceramic substrate 11, as with the circuit layer 12. Has been.
- the cooler 40 is for cooling the power module substrate 10 described above.
- the top plate portion 41 joined to the power module substrate 10 and the top plate portion 41 are suspended downward.
- circulating a cooling medium for example, cooling water
- the cooler 40 (top plate portion 41) is preferably made of a material having good thermal conductivity, and in this embodiment, is made of A6063 (aluminum alloy).
- a buffer layer 15 made of aluminum, an aluminum alloy, or a composite material containing aluminum (for example, AlSiC) is provided between the top plate portion 41 of the cooler 40 and the metal layer 13. Yes.
- a conductive bonding layer 30 (adhesive layer) is formed between the circuit layer 12 and the semiconductor element 3 by the resin composition according to the present embodiment described above.
- the resin composition according to the present embodiment After applying the resin composition according to the present embodiment to the surface of the circuit layer 12 with a thickness of 10 to 100 ⁇ m using a dispenser or screen printing float, the semiconductor element 3 is laminated, and the temperature is 100 to 200 ° C. and the holding time is 0.
- the conductive bonding layer 30 is formed, and the circuit layer 12 and the semiconductor element 3 are bonded.
- the ratio (a / b) between the Young's modulus (a) of the silver-coated particles and the Young's modulus (b) of the binder resin after curing is high. Since the Young's modulus (a) of the silver-coated particles is 0.1 to 2.0, and the conductive bonding layer 30 (adhesive layer) in which local concentration of thermal stress is reduced Can be formed.
- epoxy groups, carboxyl groups, carbonyl groups, amino groups, amide groups, imino groups, imidazole groups, and mercapto groups are introduced on the surface of the silver-coated particles.
- the affinity between the binder resin and the silver-coated particles is high. Therefore, the adhesiveness between the binder resin and the silver-coated particles is increased, and the conductive bonding layer 30 (adhesive layer) in which the local concentration of thermal stress is reduced can be formed.
- the conductive bonding layer 30 is formed using the resin composition of the present embodiment, and the circuit layer 12 and the semiconductor element 3 are bonded. Even when a heat cycle is applied, it is possible to suppress the occurrence of cracks in the conductive bonding layer 30, and the bonding reliability between the semiconductor element 3 and the power module substrate 10 is excellent.
- the embodiment of the present invention has been described in detail above, but the specific configuration is not limited to this embodiment, and includes a design and the like within a range not departing from the gist of the present invention.
- the object to be joined is not limited to a semiconductor element, and an arbitrary first member and a second member may be joined using the resin composition described above to constitute a joined body.
- the power module is described as an example of the semiconductor device.
- the present invention is not limited to this, and another semiconductor device such as an LED may be used.
- the circuit layer with aluminum it is not limited to this, You may be comprised with other electrically-conductive materials, such as copper.
- the ceramic substrate made of AlN has been described as an example of the insulating layer, but the present invention is not limited to this, and the insulating layer is made of other insulators such as Al 2 O 3 , Si 3 N 4 , and insulating resin. May be.
- the obtained silver-coated particles was subjected to surface cleaning with an alkali cleaning solution and then vacuum-dried. Thereafter, the dried silver-coated particles were put into ethanol 1 dm 3 and subjected to ultrasonic dispersion, and then 10 g of the surface treatment agent shown in Table 1 was added and stirred, whereby the surface of the silver-coated particles was The functional groups shown in Table 1 were introduced.
- the silver-coated particles in the ethanol dispersion were washed with ethanol and dried to obtain a dried powder of silver-coated particles into which functional groups had been introduced.
- binder resin and the compounding agent (curing agent) shown in Table 1 were mixed using a foam remover (Sinky Corp.) while being diluted with the solvent shown in Table 1 to obtain a binder mixed solution.
- the Young's modulus of the cured binder resin was measured as follows using the obtained binder mixed solution.
- the binder mixed solution was applied onto a stainless steel (SUS) substrate, and the obtained coating film was heated at a temperature of 180 ° C. for 1 hour to form a resin film on the SUS substrate.
- the Young's modulus of the obtained resin film (cured binder resin) was measured as follows. Using a micro-indentation hardness tester (Elionix, “ENT-1100”), a load-unload test is performed with a maximum load set at 30 mgf under an environment of 25 ° C., and a load-displacement curve is obtained. It was.
- the silver-coated particles prepared in the previous step and the binder mixed solution are weighed at a ratio in which the volume ratio of the silver-coated particles and the binder resin in the resin composition after curing is 1: 1, and foamed.
- Taro (Sinky) was used for mixing.
- the resulting mixture was kneaded with a three-roll mill, and then the solvent shown in Table 1 was further added to adjust the viscosity of the resin composition as shown in Table 2.
- the viscosity was a rheometer (TA Instruments Japan DHR3) using a 20 mm flat plate, and the viscosity at a rotational speed of 1 rpm was adopted.
- resin particles provided with a tin adsorption layer were immersed in an aqueous solution containing a complexing agent and a reducing agent. Then, while stirring the aqueous solution, an aqueous solution containing silver nitrate is dropped, and the resin particles provided with a tin adsorption layer are coated with silver so that the ratio of silver in the particles is 2% by mass to produce silver-coated particles. did. Thereafter, the silver-coated particles were washed with water and dried.
- a resin composition was prepared in the same manner as Example 1 except that the silver-coated particles prepared as described above were used.
- ⁇ Reliability test> A reliability test was performed on the prepared resin composition. Specifically, first, the resin composition prepared on two aluminum substrates was applied at a thickness of 100 ⁇ m, and then heated at a temperature of 150 ° C. for 1 hour to cure the resin composition, thereby bonding the aluminum substrates together. This was used as a test piece. Next, this test piece was subjected to a heat cycle test for 1000 cycles in the range of ⁇ 45 ° C. to 125 ° C. using a heat cycle tester (manufactured by ESPEC, “TSD-100”). After the cycle test, the bonding rate was evaluated for the test piece.
- the bonding rate was evaluated by observing the test piece adhesion interface before and after the heat cycle test with an ultrasonic flaw detection image, measuring the bonding area and the peeled area by image analysis, and the initial bonding rate (the bonding rate before the heat cycle test). ) And the joining rate after heat cycle (joining rate after heat cycle test).
- the initial joining rate and the joining rate after heat cycle were determined by the following formula.
- Initial bonding rate bonding area before heat cycle test / (bonding area before heat cycle test + peeling area before heat cycle test) ⁇ 100
- Bonding ratio after heat cycle (bonding area before heat cycle test ⁇ peeling area after heat cycle test) / bonding area before heat cycle test ⁇ 100
- the resin composition of the present invention can form an adhesive layer in which local concentration of thermal stress is relaxed, and can be used, for example, when a semiconductor element is mounted on an insulating circuit board or the like.
- Power Module 3 Semiconductor Element 10 Power Module Substrate 12 Circuit Layer 30 Conductive Bonding Layer
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Abstract
Description
本願は、2015年10月29日に、日本に出願された特願2015-212947号と、2016年7月29日に、日本に出願された特願2016-150723号に基づき優先権を主張し、その内容をここに援用する。
風力発電、電気自動車、ハイブリッド自動車等を制御するために用いられる大電力制御用のパワー半導体素子においては、発熱量が多い。そのため、上記パワー半導体素子を搭載する基板としては、例えばAlN(窒化アルミニウム)、Al2O3(アルミナ)などからなるセラミックス基板と、このセラミックス基板の一方の面に導電性の優れた金属等を配設することによって形成された回路層と、を備えたパワーモジュール用基板が、従来から広く用いられている。
パワージュール用基板としては、セラミックス基板の他方の面に金属層を形成したものも提供されている。
また、前記銀被覆粒子のヤング率(a)が0.05~2.0GPaとされているので、接着層の剛性を確保できるとともに、接着層が必要以上に硬くなることを抑制できる。
この場合、前記銀被覆粒子のヤング率(a)と硬化後の前記バインダー樹脂のヤング率(b)との比(a/b)が0.4~2.0とされているので、熱応力が局所的に集中することをより抑制することができ、接着層におけるクラックの発生を確実に抑制することができる。また、前記銀被覆粒子のヤング率(a)が0.05~2.0GPaとされているので、接着層の剛性をより確保できるとともに、接着層が必要以上に硬くなることを確実に抑制できる。
この場合、銀被覆粒子の表面に導入された官能基が、バインダー樹脂との親和性に優れ、バインダー樹脂と銀被覆粒子との密着性を高めることができる。
この構成の接合体によれば、第一部材と第二部材との間に前述の樹脂組成物が介在しているので、この接合体にヒートサイクルを負荷した場合であっても、樹脂組成物におけるクラックの発生が抑制され、第一部材と第二部材との接合信頼性に優れている。
この構成の半導体装置によれば、回路層と半導体素子との間に前述の樹脂組成物が介在しているので、この半導体装置にヒートサイクルを負荷した場合であっても、樹脂組成物におけるクラックの発生が抑制され、回路層と半導体素子の接合信頼性に優れている。
先ず、本発明の一実施形態である樹脂組成物の構成について説明する。本実施形態の樹脂組成物は、バインダー樹脂と、銀被覆粒子と、を有して概略構成されている。
本実施形態の樹脂組成物は、加熱することにより硬化し、接着層を形成する。接着したい部分に接着層を形成させることで、第一部材と第二部材とを接着し、接合体を構成することができる。本実施形態の樹脂組成物は、希釈剤(溶剤)を含んでいてもよい。希釈剤を含む樹脂組成物は、流動性が向上して、第一部材もしくは第二部材などの接着層を形成させる部分に塗布し易くなる。
樹脂組成物に含ませるバインダー樹脂としてのエポキシ樹脂は、例えばビスフェノール型、ビフェニル型、ビフェニル混合型、ナフタレン型、クレゾールノボラック型、ジシクロペンタジエン型、トリスフェノールエタン型、テトラフェノールエタン型のエポキシ樹脂が挙げられる。
このシリコーン樹脂としては、具体的には各種オルガノポリシロキサン、変性ポリシロキサン、エラストマー変性ポリシロキサン、室温硬化型シリコーンゴム等が挙げることができ、これらを単独又は組み合わせて使用することができる。
希釈剤としては、エチレングリコールモノエチルエーテル、エチレングリコールモノブチルエーテル、プロピレングリコールモノメチルエーテル、プロピレングリコールモノエチルエーテル、プロピレングリコールモノ-n-ブチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコ-ルモノブチルエーテル、ジプロピレングリコールモノメチルエーテル、ジプロピレングリコールモノブチルエーテル、トリプロピレングリコールモノメチルエーテル等のエーテルアルコール系溶剤及びそれらの酢酸エステル系溶剤、エチレングリコール、プロピレングリコール、テルピネオール、ミネラルスピリット、トルエン等の芳香族炭化水素系溶剤、ドデカン等の脂肪族炭化水素系溶剤、ジメチルホルムアミド、N-メチル―2-ピロリドン、ジメチルスルホキシド、ジアセトンアルコール、ジメチルアセトアミド、γ-ブチロラクトン、水、反応性希釈剤等が挙げられる。
これらはバインダー樹脂との相溶性によって選択され、シリコーン樹脂においてはミネラルスピリットやトルエン、ポリイミド樹脂においてはN-メチル2-ピロリドン、フェノール樹脂、ウレタン樹脂、エポキシ樹脂ではエチルカルビトールアセテート、ブチルカルビトールアセテート、α―テルピネオールが特に好ましい。これらの溶媒は単独でも複数種の組み合わせでも用いることができる。
樹脂粒子の平均粒径を0.5μm以上とすることにより、樹脂粒子の表面積が小さくなる。そのため、導電性及び熱伝導性フィラーとして必要な導電性及び熱伝導性を得るための銀の含有量を少なくすることができる。また、樹脂粒子の平均粒径を40μm以下とすることにより、銀被覆粒子含有樹脂組成物を様々な塗布・印刷方法へ応用することが容易となる。
銀被覆粒子100質量部に対して、銀の含有量を2質量部以上とすることにより、導電性フィラーとして銀被覆粒子が分散したときに、銀同士の接点が取り易く、十分な導電性を付与することができる。一方、銀の含有量を88質量部以下とすることにより、比重が比較的小さくなり、コストの上昇も抑制することができる。
粉体体積抵抗を1×10-2Ω・cm以下とすることにより、抵抗値が低くなり、導電性材料及び熱伝導性材料として適している。
上記官能基が導入されることにより、バインダー樹脂と銀被覆粒子との親和性が高くなり、バインダー樹脂と銀被覆粒子の密着性が高まるため、熱応力の局所的な集中を緩和した接着層を形成することができる。
ヤング率の比(a/b)を0.4~2.0の範囲にすることで、熱応力の局所的な集中を緩和した接着層を形成することができる。そのため、本実施形態の樹脂組成物により形成した接着層は耐ヒートサイクル性に優れる。
先ず、銀被覆粒子を調製するため、錫化合物の水溶液に樹脂粒子を添加し、撹拌する。その後、樹脂粒子を濾別して水洗する。これにより、樹脂粒子の表面に錫吸着層が設けられる。
錫化合物の水溶液の温度を20℃以上とすることにより、水溶液の活性が低くなることを抑制し、樹脂粒子に錫化合物を十分に付着させることができる。一方、錫化合物の水溶液の温度を45℃以下とすることにより、錫化合物の酸化を抑制でき、水溶液が安定し、樹脂粒子に錫化合物を十分に付着させることができる。20~45℃の水溶液で樹脂粒子に錫化合物を付着させることによって、密着性の悪いアクリル系樹脂やスチレン系樹脂からなる微粒子に対しても、適切な結晶子径の銀の結晶粒子を析出させることができる。このため、密着性・緻密性に優れた銀被覆層を形成できる。さらに、銀被覆層が密着性・緻密性に優れるため、一方向に、粒径の10%を圧縮したときの圧縮方向の抵抗値を低減できる。
次に、本実施形態である樹脂組成物を用いた半導体装置の一例であるパワーモジュールについて、図1を用いて説明する。
このパワーモジュール1は、回路層12が配設されたパワーモジュール用基板10と、回路層12の表面に導電接合層30(接着層)を介して接合された半導体素子3と、冷却器40とを備えている。
セラミックス基板11は、回路層12と金属層13との間の電気的接続を防止するものであって、絶縁性の高いAlN(窒化アルミニウム)で構成されている。また、セラミックス基板11の厚さは、0.2~1.5mmの範囲内に設定されており、本実施形態では、0.635mmに設定されている。
回路層12の表面に、本実施形態である樹脂組成物をディスペンサやスクリーン印刷浮きを用いて厚さ10~100μmで塗布した後、半導体素子3を積層し、温度100~200℃、保持時間0.5~2.0時間の条件で硬化することにより、導電接合層30が形成され、回路層12と半導体素子3とが接着される。
例えば、接合する対象物は半導体素子に限定されることはなく、任意の第一部材と第二部材とを上述の樹脂組成物を用いて接合し、接合体を構成してもよい。
また、本実施形態では、半導体装置としてパワーモジュールを例に挙げて説明したが、これに限定されることはなく、LED等の他の半導体装置であってもよい。
さらに、絶縁層としてAlNからなるセラミックス基板を例に挙げて説明したが、これに限定されることはなく、Al2O3、Si3N4、絶縁樹脂等の他の絶縁体で構成されていてもよい。
[本発明例1]
先ず、銀被覆粒子を調製するため、塩化第一錫15g、35%塩酸15cm3を、容量1dm3のメスフラスコを用いて水で1dm3に希釈(メスアップ)し、25℃に保温した。この水溶液に、平均粒径10μmであるアクリル樹脂粒子(母粒子)25gを添加し、1時間撹拌した。その後、樹脂粒子を濾別して水洗した。これにより、樹脂粒子の表面に錫吸着層を設けた。
その後、水溶液を撹拌しながら、硝酸銀を含む水溶液を滴下し、錫吸着層を設けた樹脂粒子に、得られる銀被覆粒子中の銀の割合が50質量%となるように銀を被覆して銀被覆粒子を作製した。その後、銀被覆粒子を水洗して乾燥した。乾燥後の銀被覆粒子について、平均粒子径を測定した。その結果を表1に示す。なお、銀被覆粒子の平均粒子径は、前述した樹脂粒子の平均粒径の測定方法と同様な方法により測定した。
微小圧縮試験機(島津製作所製、「MCT-2000」)を用いて、最大荷重が粒子の破壊強度の60%となるように設定した状態で負荷―除荷試験を行い、荷重―変位曲線を得た。この荷重―変位曲線において荷重を、
圧縮強度=2.8×荷重/(π×粒子直径×粒子直径)
の式を用いて圧縮強度に変換し、また変位を粒子直径で除すことで歪みに変換することで圧縮強度―変位曲線を得た。この圧縮強度―変位曲線のうち、除荷曲線における最大荷重値(破壊強度の60%)から破壊強度の55%までの線形領域における傾きをヤング率の値とした。こうして得られたヤング率について粒子20個の平均値を算出し、銀被覆粒子のヤング率とした。測定結果を表2に示す。
先ず、バインダー混合液をステンレス(SUS)基板上に塗布し、得られた塗布膜を温度180℃で1時間の条件で加熱して、SUS基板上に樹脂皮膜を成膜した。次いで、得られた樹脂皮膜(硬化後のバインダー樹脂)のヤング率を次のようにして測定した。
微小押し込み硬さ試験機(エリオニクス社製、「ENT-1100」)を用いて、25℃の環境下にて最大荷重30mgfに設定した状態で負荷―除荷試験を行い、荷重―変位曲線を得た。除荷曲線において除荷開始から15mgfまでの曲線を最小2乗法で近似した直線と荷重―変位曲線の横軸の交点をh1[μm],最大変位[μm]-h1[μm]の値をh2[μm]とし、以下の式からヤング率を求めた。
ヤング率 E[GPa]=0.0532/(h1×h2)
こうして得られたヤング率について、樹脂皮膜上の20箇所で測定した平均値をバインダーのヤング率とした。測定結果を表2に示す。
先ず、銀被覆粒子を調製するため、塩化第一錫15g、35%塩酸15cm3を、容量1dm3のメスフラスコを用いて水で1dm3に希釈(メスアップ)し、25℃に保温した。この水溶液に、平均粒径35μmであり、かつ粒径の変動係数2.1%のアクリル樹脂粒子50gを添加し、1時間撹拌した。その後、樹脂粒子を濾別して水洗した。これにより、樹脂粒子の表面に錫吸着層を設けた。
その後、水溶液を撹拌しながら、硝酸銀を含む水溶液を滴下し、錫吸着層を設けた樹脂粒子に、粒子中の銀の割合が2質量%となるように銀を被覆して銀被覆粒子を作製した。その後、銀被覆粒子を水洗して乾燥した。
本発明例3~10及び比較例1では、銀被覆粒子の母粒子として表1に示すものを用いて、銀被覆粒子中の銀の割合が表1に示す量である銀被覆粒子を作製した。この作製した銀被覆粒子を用いたこと以外は、本発明例1と同様にして、樹脂組成物を作製した。
作製した樹脂組成物に対して信頼性試験を行った。具体的には、先ず、アルミニウム基板2枚に作製した樹脂組成物を厚さ100μmで塗布した後、温度150℃で1時間加熱し、樹脂組成物を硬化させることで、アルミニウム基板同士を接着させ、これを試験片とした。次に、この試験片を、ヒートサイクル試験機(ESPEC社製、「TSD-100」)を用いて、-45℃~125℃の範囲でヒートサイクル試験を1000サイクル実施した。サイクル試験後、試験片に対して接合率を評価した。
初期接合率=ヒートサイクル試験前の接合面積/(ヒートサイクル試験前の接合面積+ヒートサイクル試験前の剥離面積)×100
ヒートサイクル後接合率=(ヒートサイクル試験前の接合面積―ヒートサイクル試験後の剥離面積)/ヒートサイクル試験前の接合面積×100
これに対して、銀被覆粒子の表面に官能基が導入されていて、銀被覆粒子のヤング率(a)及び銀被覆粒子のヤング率(a)と硬化のバインダーのヤング率(b)との比(a/b)が本発明の範囲内とされた本発明例1~10においては、いずれもヒートサイクル後の接合率が比較例に比べて高くなっていることが確認された。
3 半導体素子
10 パワーモジュール用基板
12 回路層
30 導電接合層
Claims (5)
- バインダー樹脂と、
官能基が表面に導入されている銀被覆粒子と、を有し、
前記銀被覆粒子のヤング率(a)と硬化後の前記バインダー樹脂のヤング率(b)との比(a/b)が0.1~2.0であり、
前記銀被覆粒子のヤング率(a)が0.05~2.0GPaであることを特徴とする樹脂組成物。 - 前記銀被覆粒子のヤング率(a)と硬化後の前記バインダー樹脂のヤング率(b)との比(a/b)が0.4~2.0であり、
前記銀被覆粒子のヤング率(a)が0.2~2.0GPaであることを特徴とする請求項1に記載の樹脂組成物。 - 前記官能基が、エポキシ基、カルボキシル基、カルボニル基、アミノ基、アミド基、イミノ基、イミダゾール基、及びメルカプト基からなる群より選ばれることを特徴とする請求項1又は請求項2に記載の樹脂組成物。
- 第一部材と第二部材とが接合されてなる接合体であって、
前記第一部材と前記第二部材との間に、請求項1から請求項3のいずれか一項に記載の樹脂組成物が介在していることを特徴とする接合体。 - 絶縁層の一方の面に回路層が配設された絶縁回路基板と、前記回路層のうち前記絶縁層とは反対側の面に接合された半導体素子と、を備えた半導体装置であって、
前記回路層と前記半導体素子との間に請求項1から請求項3のいずれか一項に記載の樹脂組成物が介在していることを特徴とする半導体装置。
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WO2022113923A1 (ja) * | 2020-11-25 | 2022-06-02 | 住友ベークライト株式会社 | 銀含有ペーストおよび接合体 |
JPWO2022113923A1 (ja) * | 2020-11-25 | 2022-06-02 | ||
JP7392876B2 (ja) | 2020-11-25 | 2023-12-06 | 住友ベークライト株式会社 | 銀含有ペーストおよび接合体 |
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