WO2019225408A1 - アンダーフィル材、半導体パッケージ及び半導体パッケージの製造方法 - Google Patents
アンダーフィル材、半導体パッケージ及び半導体パッケージの製造方法 Download PDFInfo
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- WO2019225408A1 WO2019225408A1 PCT/JP2019/019141 JP2019019141W WO2019225408A1 WO 2019225408 A1 WO2019225408 A1 WO 2019225408A1 JP 2019019141 W JP2019019141 W JP 2019019141W WO 2019225408 A1 WO2019225408 A1 WO 2019225408A1
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- Prior art keywords
- epoxy resin
- underfill material
- mass
- isocyanurate ring
- epoxy
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials
- H10W74/47—Encapsulations, e.g. protective coatings characterised by their materials comprising organic materials, e.g. plastics or resins
-
- 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
- C08G59/20—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 epoxy compounds used
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- 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
- C08G59/50—Amines
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials
Definitions
- the present disclosure relates to an underfill material, a semiconductor package, and a method for manufacturing a semiconductor package.
- Epoxy resins are widely used as the sealing resin. This is because the epoxy resin is excellent in balance in various properties such as workability, moldability, electrical properties, moisture resistance, heat resistance, mechanical properties, and adhesion to inserts.
- bare chip mounting in which a bare chip is directly mounted on a wiring board, has become mainstream as electronic component devices become smaller and thinner.
- semiconductor devices by bare chip mounting include COB (Chip on Board), COG (Chip on Glass), TCP (Tape Carrier Package), and the like.
- COB Chip on Board
- COG Chip on Glass
- TCP Transmission Carrier Package
- a liquid sealing resin composition is used. Widely used.
- Patent Document 1 describes an underfill material using a polyfunctional epoxy resin and a curing agent containing a phenolic compound and an acid anhydride. These liquid resin compositions play an important role in protecting electronic components from temperature and humidity and mechanical external force.
- the application of flip chip type semiconductor devices which are reduced in size and thickness has been advanced. For this reason, the request
- movement under high temperature came out.
- the underfill material using the liquid resin composition it has been difficult to sufficiently satisfy the conditions as a sealing material for power semiconductors.
- the conventional underfill material could not sufficiently satisfy the performance required as a sealing material for power semiconductors, such as a fillet crack occurring when the cured product was left at high temperature for a long time. .
- the present disclosure provides an underfill material capable of suppressing the occurrence of fillet cracks when a cured product is placed at a high temperature for a long time, a semiconductor package using the underfill material, and a method for manufacturing the semiconductor package The issue is to provide.
- Means for solving the above problems include the following aspects. ⁇ 1> It contains an epoxy resin, a curing agent, and an inorganic filler, and is obtained by subtracting the mass of the inorganic filler from the total mass of the cured product when placed as a cured product at 175 ° C. for 1000 hours.
- decrease rate of the component obtained is 1.00 mass% or less.
- the epoxy resin includes an epoxy resin having an epoxy group and an isocyanurate ring.
- ⁇ 6> An epoxy resin having an epoxy group and an isocyanurate ring, in which the epoxy group and the isocyanurate ring are connected by a chain hydrocarbon group having 1 or more carbon atoms, other than an epoxy group in the molecule.
- the underfill material according to ⁇ 5> which does not have a carbon-oxygen single bond (C—O).
- ⁇ 7> The underfill material according to any one of ⁇ 1> to ⁇ 6>, wherein the curing agent includes an amine curing agent.
- ⁇ 8> The underfill material according to any one of ⁇ 1> to ⁇ 7>, which is for power semiconductors.
- ⁇ 9> a substrate, a semiconductor element disposed on the substrate, and a cured product of the underfill material according to any one of ⁇ 1> to ⁇ 8>, which seals the semiconductor element.
- an underfill material capable of suppressing the occurrence of fillet cracks when a cured product is placed at a high temperature for a long time a semiconductor package using the underfill material, and a method for manufacturing the semiconductor package are provided. .
- the term “process” includes a process that is independent of other processes and includes the process if the purpose of the process is achieved even if it cannot be clearly distinguished from the other processes.
- numerical ranges indicated using “to” include numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value of another numerical description.
- the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
- each component may contain a plurality of corresponding substances.
- the content or content of each component is the total content or content of the multiple types of substances present in the composition unless otherwise specified.
- a plurality of particles corresponding to each component may be included.
- the particle diameter of each component means a value for a mixture of the plurality of particles present in the composition unless otherwise specified.
- the underfill material of the present disclosure contains an epoxy resin, a curing agent, and an inorganic filler, and when the cured product is placed at 175 ° C. for 1000 hours as a cured product, The mass reduction rate of the component obtained by subtracting the mass of the inorganic filler from the total mass is 1.00% by mass or less.
- the underfill material of the present disclosure has an epoxy group and an isocyanurate ring in the second embodiment, and the epoxy group and the isocyanurate ring are connected by a chain hydrocarbon group having 1 or more carbon atoms. Containing an epoxy resin, a curing agent, and an inorganic filler.
- an epoxy resin having an epoxy group and an isocyanurate ring is also referred to as an “isocyanurate ring-containing epoxy resin”
- the epoxy group has an isocyanurate ring and the epoxy group and the isocyanurate ring have 1 carbon atom.
- the above “epoxy resin linked by a chain hydrocarbon group” is also referred to as “specific isocyanurate ring-containing epoxy resin”.
- fillet cracks are a phenomenon in which decomposition of neighboring resins proceeds in a chained manner starting from the decomposition point. This is thought to be caused by this. Therefore, it was conceived to suppress the progress of decomposition of the resin itself, and found that fillet cracks can be effectively suppressed by adjusting the mass reduction rate when a cured product is placed at a high temperature for a long time to a certain level or less. It was.
- the epoxy resin contained in the underfill material contains a specific isocyanurate ring-containing epoxy resin, it is considered that decomposition of the resin is suppressed and fillet cracks can be effectively suppressed. The reason for this is not clear, but it is presumed that the isocyanurate ring has excellent decomposition resistance at high temperatures and the toughness of the cured product is improved.
- the underfill material includes an epoxy resin.
- the type of epoxy resin is not particularly limited.
- the epoxy resin is not particularly limited as long as it includes a specific isocyanurate ring-containing epoxy resin.
- the epoxy resin may include an epoxy resin having two or more epoxy groups in one molecule (also referred to as a bifunctional epoxy resin), or an epoxy resin having three or more epoxy groups in one molecule (such as a trifunctional epoxy resin). Or may be used in combination.
- a monomer compound having an epoxy group that is, an epoxy compound
- an epoxy resin is also referred to as an epoxy resin.
- the epoxy resin may be solid or liquid at room temperature, or both may be used in combination. From the viewpoint of reducing the viscosity of the underfill material, it is preferable to use an epoxy resin that is liquid at room temperature.
- being liquid at normal temperature means that the viscosity at 25 ° C. is 1000 Pa ⁇ s or less.
- the viscosity is measured with a rheometer (for example, “AR2000” manufactured by TA Instruments Japan Co., Ltd.) on a 40 mm parallel plate under a shear rate of 32.5 / sec. be able to.
- a solid epoxy resin may be used as long as a desired effect is achieved.
- the content of the solid epoxy resin is preferably 20% by mass or less based on the total amount of the epoxy resin.
- the epoxy resin examples include bisphenol type epoxy resin, naphthalene type epoxy resin, glycidylamine type epoxy resin, hydrogenated bisphenol type epoxy resin, alicyclic epoxy resin, alcohol ether type epoxy resin, cyclic aliphatic type epoxy resin, and fluorene type.
- An epoxy resin and a siloxane epoxy resin are mentioned.
- An epoxy resin may be used individually by 1 type, or may use 2 or more types together. Especially, it is preferable that an epoxy resin contains a bisphenol type epoxy resin from a fluid viewpoint.
- the type of bisphenol type epoxy resin is not particularly limited, and examples thereof include bisphenol A type epoxy resin, bisphenol F type epoxy resin, and bisphenol AD type epoxy resin.
- the bisphenol type epoxy resin is preferably liquid at room temperature, and more preferably bisphenol F type epoxy resin that is liquid at room temperature.
- Bisphenol type epoxy resins that are liquid at room temperature are also available as commercial products.
- a commercial product of bisphenol F type epoxy resin that is liquid at room temperature includes “Epototo YDF-8170C” trade name of Nippon Steel Chemical & Material Co., Ltd.
- the ratio of the bisphenol type epoxy resin to the entire epoxy resin is not particularly limited and can be selected according to the desired characteristics of the underfill material.
- the proportion of the bisphenol-type epoxy resin in the entire epoxy resin may be 5% by mass to 90% by mass, 5% by mass to 75% by mass, or 5% by mass to 60% by mass. Also good. *
- the viscosity of the bisphenol-type epoxy resin is not particularly limited, and from the viewpoint of handleability, the viscosity at 25 ° C. is preferably 50 Pa ⁇ s or less, more preferably 30 Pa ⁇ s or less, and 10 Pa ⁇ s or less. More preferably it is. *
- the epoxy resin preferably contains an epoxy resin having no carbon-oxygen single bond (C—O) other than an epoxy group in the molecule.
- the epoxy resin contains an epoxy resin having no carbon-oxygen single bond (C—O) other than an epoxy group in the molecule, the occurrence of fillet cracks tends to be more effectively suppressed. The reason for this is presumed to be that the thermal decomposition resistance of the epoxy resin is improved and the toughness is improved.
- the epoxy equivalent (molecular weight / number of epoxy groups) of the epoxy resin is not particularly limited. From the viewpoint of balance of various characteristics such as moldability, reflow resistance, and electrical reliability, the epoxy equivalent of the epoxy resin is preferably 80 g / eq to 1000 g / eq, and preferably 80 g / eq to 600 g / eq. More preferably, it is more preferably 80 g / eq to 300 g / eq. In the present disclosure, the epoxy equivalent of the epoxy resin is a value measured by a method according to JIS K 7236: 2009.
- the softening point or melting point of the epoxy resin is not particularly limited. From the viewpoint of moldability and reflow resistance, the softening point or melting point of the epoxy resin is preferably 40 ° C. to 180 ° C., and from the viewpoint of handleability during the preparation of the underfill material, it is 50 ° C. to 130 ° C. It is more preferable.
- the melting point of the epoxy resin is a value measured by differential scanning calorimetry (DSC), and the softening point of the epoxy resin is a value measured by a method according to JIS K 7234: 1986 (ring ball method).
- the amount of hydrolyzable chlorine which is one of the indicators of the purity of the epoxy resin, is 500 ppm or less from the viewpoint of suppressing corrosion of wiring on a semiconductor element such as an IC and obtaining an underfill material having excellent moisture resistance. Preferably, it is 300 ppm or less.
- the amount of hydrolyzable chlorine is a value determined by potentiometric titration after dissolving 1 g of epoxy resin in 30 ml of dioxane, adding 5 ml of 1N KOH methanol solution and refluxing for 30 minutes.
- the content of the epoxy resin in the underfill material is not particularly limited. From the viewpoint of viscosity, glass transition temperature, heat resistance, etc., the content of the epoxy resin with respect to the total amount of the underfill material is preferably 0.5% by mass to 75% by mass, and 20% by mass to 70% by mass. It is more preferable that the content be 25% by mass to 70% by mass.
- an epoxy resin contains an isocyanurate ring containing epoxy resin from a viewpoint of suppressing a fillet crack more favorably.
- the isocyanurate ring is considered to have excellent thermal decomposition at high temperatures, and the use of an isocyanurate ring-containing epoxy resin is considered to improve the toughness of the cured product and effectively suppress fillet cracks.
- the epoxy resin includes a specific isocyanurate ring-containing epoxy resin.
- an isocyanurate ring-containing epoxy resin in which an epoxy group and an isocyanurate ring are connected by a chain hydrocarbon group having 2 or more carbon atoms is preferable from the viewpoint of being easily liquid and being easy to handle.
- the chain hydrocarbon group having 1 or more carbon atoms may be a linear hydrocarbon group or a branched hydrocarbon group.
- the chain hydrocarbon group having 1 or more carbon atoms may or may not have a substituent. Examples of the substituent include a phenyl group and a hydroxy group.
- the chain hydrocarbon group having 1 or more carbon atoms may be a saturated chain hydrocarbon group or an unsaturated chain hydrocarbon group, and the former is preferred.
- the chain hydrocarbon group having 1 or more carbon atoms may have 5 or less carbon atoms, for example.
- the number of carbon atoms contained in the chain hydrocarbon group that links the epoxy group and the isocyanurate ring is the number of carbons on the main chain, that is, on the chain that links the epoxy group and the isocyanurate group.
- the number refers to the number of branched chain and substituent carbon atoms.
- Examples of the chain hydrocarbon group having 1 or more carbon atoms include linear alkylene groups having 1 or more carbon atoms, preferably linear alkylene groups having 1 to 5 carbon atoms, and having 2 to 4 carbon atoms.
- a linear alkylene group is more preferable, and a linear alkylene group having 2 or 3 carbon atoms is more preferable.
- it may be a branched alkylene group having one or more branched chains having 1 to 5 carbon atoms with respect to these linear alkylene groups.
- the epoxy group and the isocyanurate ring are linked by a chain hydrocarbon group having 1 or more carbon atoms means at least one epoxy in the molecule. It means that the group is connected by a chain hydrocarbon group having 1 or more carbon atoms.
- the specific isocyanurate ring-containing epoxy resin is a bifunctional epoxy resin, it is preferable that two epoxy groups in the molecule are connected by a chain hydrocarbon group having 1 or more carbon atoms.
- the specific isocyanurate ring-containing epoxy resin is a trifunctional epoxy resin
- the chain hydrocarbon groups may be the same as or different from each other.
- the isocyanurate ring-containing epoxy resin preferably has no carbon-oxygen single bond (C—O) other than an epoxy group in the molecule from the viewpoint of suppressing the occurrence of fillet cracks.
- the isocyanurate ring-containing epoxy resin may be solid or liquid at room temperature, or both may be used in combination. From the viewpoint of lowering the viscosity of the underfill material, the isocyanurate ring-containing epoxy resin is preferably liquid at normal temperature.
- the number of epoxy groups (that is, the functional number) in the molecule of the isocyanurate ring-containing epoxy resin is not particularly limited, and is preferably bifunctional or more, more preferably trifunctional from the viewpoint of heat resistance.
- the epoxy equivalent (molecular weight / number of epoxy groups) of the isocyanurate ring-containing epoxy resin is not particularly limited. From the viewpoint of heat resistance and handleability, the epoxy equivalent of the isocyanurate ring-containing epoxy resin is preferably 90 g / eq to 500 g / eq, more preferably 100 g / eq to 300 g / eq, and 120 g / eq. More preferably, it is ⁇ 160 g / eq.
- the viscosity of the isocyanurate ring-containing epoxy resin is not particularly limited, and the viscosity at 25 ° C. is preferably 50 Pa ⁇ s or less, more preferably 30 Pa ⁇ s or less, and more preferably 10 Pa ⁇ s or less from the viewpoint of handleability. More preferably it is.
- the proportion of the isocyanurate ring-containing epoxy resin in the entire epoxy resin is not particularly limited, and can be selected according to the desired characteristics of the underfill material.
- the proportion of the isocyanurate ring-containing epoxy resin in the entire epoxy resin may be 10% by mass to 100% by mass, 10% by mass to 75% by mass, or 10% by mass to 60% by mass. It may be.
- the proportion of the specific isocyanurate ring-containing epoxy resin in the entire isocyanurate ring-containing epoxy resin may be 50% by mass or more, and 70% by mass or more. 90 mass% or more may be sufficient.
- a bisphenol-type epoxy resin and an isocyanurate ring-containing epoxy resin from the viewpoint of handling and effective suppression of fillet cracks, and to use a bisphenol-type epoxy resin and a specific isocyanurate ring-containing epoxy resin together.
- the mixing ratio (bisphenol type epoxy resin: isocyanurate ring-containing epoxy resin) based on mass of the bisphenol type epoxy resin and the isocyanurate ring-containing epoxy resin is not particularly limited, and is preferably 90:10 to 25:75, : More preferably, it is 10 to 40:60.
- the underfill material contains a curing agent.
- curing agent is not restrict
- curing agent may be used individually by 1 type, or may be used in combination of 2 or more type.
- the curing agent used for the underfill material is preferably a liquid at room temperature, and is preferably an amine curing agent from the viewpoint of low water absorption and adhesion to an adherend.
- amine curing agents include aliphatic amine compounds such as diethylenetriamine, triethylenetetramine, n-propylamine, 2-hydroxyethylaminopropylamine, cyclohexylamine, 4,4′-diamino-dicyclohexylmethane, diethyltoluenediamine, 3, Aromatic amine compounds such as 3′-diethyl-4,4′-diaminodiphenylmethane, 2-methylaniline, imidazole compounds such as imidazole, 2-methylimidazole, 2-ethylimidazole, 2-isopropylimidazole, imidazoline, 2-methyl Examples include imidazoline compounds such as imidazoline and 2-ethylimidazoline. Among these, an aromatic
- the functional group equivalent of the curing agent is not particularly limited. From the viewpoint of reactivity and composition properties, the functional group equivalent of the curing agent (active hydrogen equivalent in the case of an amine curing agent) is preferably 30 g / eq to 300 g / eq, and 35 g / eq to 200 g / eq. More preferably, it is eq.
- the functional group equivalent of the curing agent is a calculated value.
- the ratio of the epoxy resin and the curing agent is the ratio of the number of functional groups of the curing agent (active hydrogen in the case of an amine curing agent) to the number of epoxy groups of the epoxy resin from the viewpoint of reducing each unreacted component (
- the number of functional groups of the curing agent / the number of epoxy groups of the epoxy resin) is preferably set to be in the range of 0.5 to 2.0, and is set to be in the range of 0.6 to 1.3. More preferably, it is more preferably set within the range of 0.8 to 1.2.
- the underfill material contains an inorganic filler.
- the kind of inorganic filler is not particularly limited. Specifically, silica, alumina, calcium carbonate, zirconium silicate, calcium silicate, silicon nitride, aluminum nitride, boron nitride, beryllia, zirconia, zircon, fosterite, steatite, spinel, mullite, titania, talc, clay And inorganic materials such as mica.
- the inorganic filler having a flame retardant effect include aluminum hydroxide, magnesium hydroxide, composite metal hydroxides such as composite hydroxides of magnesium and zinc, and zinc borate.
- silica is preferable from the viewpoint of reducing the thermal expansion coefficient
- alumina is preferable from the viewpoint of improving thermal conductivity.
- An inorganic filler may be used individually by 1 type, or may be used in combination of 2 or more type.
- the content of the inorganic filler contained in the underfill material is not particularly limited. From the viewpoint of reducing the coefficient of thermal expansion after curing, the larger the amount of the inorganic filler, the better.
- the content of the inorganic filler is preferably 40% by mass or more of the entire underfill material, more preferably 50% by mass or more, and further preferably 60% by mass or more.
- the content rate of an inorganic filler is 80 mass% or less of the whole underfill material.
- the average particle diameter is not particularly limited.
- the volume average particle diameter is preferably 0.05 ⁇ m to 20 ⁇ m, and more preferably 0.1 ⁇ m to 15 ⁇ m.
- the volume average particle diameter of the inorganic filler is 0.05 ⁇ m or more, an increase in the viscosity of the underfill material tends to be further suppressed.
- the volume average particle size is 20 ⁇ m or less, the filling property into a narrow gap tends to be further improved.
- the volume average particle diameter of the inorganic filler is measured as the particle diameter (D50) when the cumulative volume from the small diameter side is 50% in the volume-based particle size distribution obtained by the laser scattering diffraction particle size distribution analyzer. Can do.
- the underfill material may contain various additives such as a curing accelerator, a stress relaxation agent, a coupling agent, and a colorant in addition to the above-described components.
- the underfill material may contain various additives well known in the art as necessary, in addition to the additives exemplified below.
- the underfill material may include a curing accelerator.
- the type of curing accelerator is not particularly limited, and can be selected according to the types of epoxy resin and curing agent, desired characteristics of the underfill material, and the like.
- the amount is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass in total of the epoxy resin and the curing agent, and 1 to 15 parts by mass. More preferably.
- the underfill material may include a stress relaxation agent.
- the stress relaxation agent include particles of thermoplastic elastomer, NR (natural rubber), NBR (acrylonitrile-butadiene rubber), acrylic rubber, urethane rubber, silicone rubber, and the like.
- a stress relaxation agent may be used individually by 1 type, or may be used in combination of 2 or more type.
- the amount is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass in total of the epoxy resin and the curing agent, and 1 to 15 parts by mass. More preferably.
- the underfill material may include a coupling agent.
- the coupling agent include silane compounds such as epoxy silane, phenyl silane, mercapto silane, amino silane, phenyl amino silane, alkyl silane, ureido silane, and vinyl silane, titanium compounds, aluminum chelate compounds, and aluminum / zirconium compounds. Of these, silane compounds (silane coupling agents) are preferred.
- a coupling agent may be used individually by 1 type, or may be used in combination of 2 or more type.
- the amount of the coupling agent is preferably 0.05 parts by mass to 5 parts by mass with respect to 100 parts by mass of the inorganic filler, and 0.1 parts by mass to 2. More preferably, it is 5 parts by mass.
- the underfill material may include a colorant.
- the colorant include carbon black, organic dyes, organic pigments, red lead, bengara and the like.
- a coloring agent may be used individually by 1 type, or may be used in combination of 2 or more type.
- the amount is preferably 0.01 to 10 parts by mass, and 0.1 to 5 parts by mass with respect to 100 parts by mass in total of the epoxy resin and the curing agent. It is more preferable that
- the underfill material is a component obtained by subtracting the mass of the inorganic filler from the total mass of the cured product (also referred to as “component other than the inorganic filler of the cured product”) when placed under a condition of 175 ° C. for 1000 hours as a cured product. It is preferable that the mass reduction rate of 1.00) is 1.00% by mass or less.
- the underfill material according to the first embodiment of the present disclosure has the mass reduction rate of 1.00% by mass or less.
- the mass reduction rate can be adjusted, for example, by adjusting the type, mixing ratio, and the like of each component contained in the underfill material.
- the mass of the inorganic filler can be determined by treating the cured product with a muffle furnace or the like at a high temperature of 800 ° C. or higher for 4 hours and measuring the mass of ash obtained as a residue after the treatment.
- a value calculated by multiplying the mass of the cured product by the content may be used as the mass of the inorganic filler.
- the mass reduction rate (% by mass) of the components other than the inorganic filler of the cured product is determined by measuring the mass of the cured product before and after the treatment at 175 ° C. for 1000 hours of the cured product to obtain the mass of the inorganic filler. calculate.
- cured material after using for a process of 175 degreeC and 1000 hours may be measured, and for the process of 175 degreeC and 1000 hours You may measure ash content using the hardened
- M L [ ⁇ (m 0 ⁇ m F ) ⁇ (m B ⁇ m F ) ⁇ / (m 0 ⁇ m F )] ⁇ 100
- M L Mass reduction rate (mass%) of components other than the inorganic filler of the cured product
- m 0 mass of cured product before treatment at 175 ° C. for 1000 hours
- m B mass of cured product after treatment at 175 ° C. for 1000 hours
- m F mass of inorganic filler
- the curing condition of the underfill material when measuring the mass reduction rate as a cured product is 165 ° C. and 120 minutes.
- the mass reduction rate of components other than the inorganic filler of the cured product is preferably 1.00% by mass or less, more preferably 0.90% by mass or less, and further preferably 0.80% by mass or less. preferable. The smaller the mass reduction rate, the better.
- the underfill material preferably has a sufficiently low viscosity when filling the gap between the substrate and the semiconductor element.
- the viscosity at 110 ° C. is preferably 1.0 Pa ⁇ s or less, more preferably 0.75 Pa ⁇ s or less, and further preferably 0.50 Pa ⁇ s or less.
- the viscosity of the underfill material at 110 ° C. is measured by using a rheometer (for example, “AR2000” manufactured by TA Instruments Japan Co., Ltd.) on a 40 mm parallel plate and a shear rate of 32.5. It is a value measured under the condition of / sec.
- the underfill material can be used for various mounting techniques.
- it is suitable as an underfill material used for flip chip type mounting technology.
- it can be suitably used for filling a gap between a semiconductor element bonded by a bump or the like and a substrate.
- the underfill material of the present disclosure is suitable for sealing power semiconductors for in-vehicle use because it can suppress the occurrence of fillet cracks even when placed under a high temperature for a long time.
- the method for filling the gap between the semiconductor element and the substrate using the underfill material is not particularly limited. For example, it can be performed by a known method using a dispenser or the like.
- a semiconductor package according to the present disclosure includes a substrate, a semiconductor element disposed on the substrate, and a cured product of the above-described underfill material that seals the semiconductor element.
- the types of the semiconductor element and the substrate are not particularly limited, and can be selected from those generally used in the field of semiconductor packages.
- the semiconductor package is excellent in reliability because the occurrence of fillet cracks is suppressed even when operated for a long time at a high temperature.
- a method of manufacturing a semiconductor package according to the present disclosure includes a step of filling a gap between a substrate and a semiconductor element disposed on the substrate with the above-described underfill material, and a step of curing the underfill material.
- the types of the semiconductor element and the substrate are not particularly limited, and can be selected from those generally used in the field of semiconductor packages.
- the method for filling the gap between the semiconductor element and the substrate using the underfill material and the method for curing the underfill material after filling are not particularly limited, and can be performed by a known method.
- underfill material of the present disclosure will be specifically described by way of examples. However, the scope of the present disclosure is not limited to these examples. Unless otherwise specified, “part” and “%” are based on mass.
- Element 20 mm long, 20 mm wide, 725 ⁇ m thick element
- Bump 15 ⁇ m high lead-free solder on a 45 ⁇ m high copper post, 200 ⁇ m bump pitch
- Substrate E-705G (Hitachi Chemical Co., Ltd., trade name) 45mm long, 45mm wide and 0.82mm thick
- Solder resist SR7300G (Hitachi Chemical Co., Ltd., trade name)
- Epoxy resin 1 Liquid bisphenol F type epoxy resin, epoxy equivalent: 160 g / eq, trade name “Epototo YDF-8170C”, Nippon Steel Chemical & Materials Co., Ltd.
- Epoxy resin 2 Triglycidyl-p-aminophenol, epoxy equivalent: 95 g / Eq, trade name “jER 630”, Mitsubishi Chemical Corporation
- Epoxy Resin 3 Trimethylolpropane triglycidyl ether, epoxy equivalent: 120 g / eq, trade name “Epototo ZX-1542”, Nippon Steel Chemical & Materials Corporation Epoxy Resin 4 ...
- 1,3,5-tris (4,5-epoxypentyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, epoxy equivalent: 135 g / eq, trade name "TEPIC-VL", Nissan Chemical Industries, Ltd.
- Curing agent 1 Diethyltoluenediamine, trade name “jER Cure W”, active hydrogen equivalent: 45 g / eq, Mitsubishi Chemical Corporation Curing agent 2... 3,3′-diethyl-4,4′-diaminodiphenylmethane, trade name “ Kayahard AA ", active hydrogen equivalent: 63 g / eq, Nippon Kayaku Co., Ltd.
- Inorganic filler spherical silica with a volume average particle size of 0.5 ⁇ m, trade name “SE2200”, Admatechs
- Colorant Carbon black, trade name “MA-100”, Mitsubishi Chemical Corporation
- the mass reduction rate (% by mass) of the components other than the inorganic filler of the cured product is obtained by measuring the mass of the cured product before and after the treatment at 175 ° C. for 1000 hours of the cured product, obtaining the mass of the inorganic filler, Calculated.
- M L [ ⁇ (m 0 ⁇ m F ) ⁇ (m B ⁇ m F ) ⁇ / (m 0 ⁇ m F )] ⁇ 100
- M L Mass reduction rate (mass%) of components other than the inorganic filler of the cured product
- m 0 mass of cured product before treatment at 175 ° C. for 1000 hours
- m B mass of cured product after treatment at 175 ° C. for 1000 hours
- m F mass of inorganic filler
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Abstract
Description
<1> エポキシ樹脂と、硬化剤と、無機充填材とを含有し、硬化物として175℃の条件下に1000時間配置したときに、硬化物の全質量から無機充填材の質量を差し引いて得られる成分の質量減少率が1.00質量%以下である、アンダーフィル材。
<2> 前記エポキシ樹脂がエポキシ基及びイソシアヌレート環を有するエポキシ樹脂を含む、<1>に記載のアンダーフィル材。
<3> 前記エポキシ基及びイソシアヌレート環を有するエポキシ樹脂における前記エポキシ基と前記イソシアヌレート環とが、炭素数1以上の鎖式炭化水素基により連結されている、<2>に記載のアンダーフィル材。
<4> 前記エポキシ樹脂が、分子内にエポキシ基以外の炭素-酸素単結合(C-O)を有しないエポキシ樹脂を含む、<1>に記載のアンダーフィル材。
<5> エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂を含む、エポキシ樹脂と、硬化剤と、無機充填材とを含有するアンダーフィル材。
<6> 前記エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂が、分子内にエポキシ基以外の炭素-酸素単結合(C-O)を有しない、<5>に記載のアンダーフィル材。
<7> 前記硬化剤がアミン硬化剤を含む、<1>~<6>のいずれか1項に記載のアンダーフィル材。
<8> パワー半導体用である<1>~<7>のいずれか1項に記載のアンダーフィル材。
<9> 基板と、前記基板上に配置された半導体素子と、前記半導体素子を封止している<1>~<8>のいずれか1項に記載のアンダーフィル材の硬化物と、を備える、半導体パッケージ。
<10> 基板と、前記基板上に配置された半導体素子との間の空隙を<1>~<8>のいずれか1項に記載のアンダーフィル材で充填する工程と、前記アンダーフィル材を硬化する工程と、を有する、半導体パッケージの製造方法。
本開示において「~」を用いて示された数値範囲には、「~」の前後に記載される数値がそれぞれ最小値及び最大値として含まれる。
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、実施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物質を複数種含んでいてもよい。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まれていてもよい。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。
本開示のアンダーフィル材は、第1の実施形態において、エポキシ樹脂と、硬化剤と、無機充填材とを含有し、硬化物として175℃の条件下に1000時間配置したときに、硬化物の全質量から無機充填材の質量を差し引いて得られる成分の質量減少率が1.00質量%以下である。
また、本開示のアンダーフィル材は、第2の実施形態において、エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂を含む、エポキシ樹脂と、硬化剤と、無機充填材と、を含有する。以下、「エポキシ基及びイソシアヌレート環を有するエポキシ樹脂」を「イソシアヌレート環含有エポキシ樹脂」ともいい、「エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂」を「特定イソシアヌレート環含有エポキシ樹脂」ともいう。
一方、発明者は、硬化物を高温下に長時間配置したときの樹脂の分解に着目した新たなアプローチによってフィレットクラックの発生を効果的に抑制しうることを見出した。明確な機序は明らかではないが、フィレットクラックは、樹脂が高温下で劣化して分解したときに、当該分解点が起点となって近隣部の樹脂の分解が連鎖的に進行することが一因となって発生すると考えられる。そこで、樹脂自体の分解の進行を抑制することに着想し、高温下に硬化物を長時間配置したときの質量減少率を一定以下に調整することで、フィレットクラックを効果的に抑制できることを見出した。
アンダーフィル材はエポキシ樹脂を含む。第1の実施形態において、エポキシ樹脂の種類は特に制限されない。第2の実施形態において、エポキシ樹脂は特定イソシアヌレート環含有エポキシ樹脂を含む限り特に制限されない。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エポキシ樹脂(2官能エポキシ樹脂ともいう)を含んでもよく、1分子中に3個以上のエポキシ基を有するエポキシ樹脂(3官能エポキシ樹脂等ともいう)を含んでもよく、これらを組み合わせて用いてもよい。本開示において、エポキシ基を有する単量体化合物(すなわち、エポキシ化合物)もエポキシ樹脂と称するものとする。
本開示において、常温で液状であるとは、25℃における粘度が1000Pa・s以下であることを意味する。本開示において、粘度はレオメーター(例えば、ティー・エイ・インスツルメント・ジャパン株式会社製の「AR2000」)により、40mmのパラレルプレートにて、せん断速度:32.5/secの条件で測定することができる。
エポキシ樹脂の融点は示差走査熱量測定(DSC)で測定される値とし、エポキシ樹脂の軟化点はJIS K 7234:1986に準じた方法(環球法)で測定される値とする。
エポキシ樹脂は、フィレットクラックをより良好に抑制する観点から、イソシアヌレート環含有エポキシ樹脂を含むことが好ましい。イソシアヌレート環は高温下での優れた耐熱分解性を有すると考えられ、イソシアヌレート環含有エポキシ樹脂を用いると硬化物の靭性が向上し、フィレットクラックが効果的に抑制されると考えられる。
なお、イソシアヌレート環含有エポキシ樹脂における、エポキシ基とイソシアヌレート環とを連結する鎖式炭化水素基に含まれる炭素数は、主鎖上、すなわちエポキシ基とイソシアヌレート基を連結する鎖上の炭素数をいい、分岐鎖及び置換基の炭素数を含まないものとする。
エポキシ樹脂が特定イソシアヌレート環含有エポキシ樹脂を含むとき、イソシアヌレート環含有エポキシ樹脂全体に占める特定イソシアヌレート環含有エポキシ樹脂の割合は、50質量%以上であってもよく、70質量%以上であってもよく、90質量%以上であってもよい。
アンダーフィル材は硬化剤を含有する。硬化剤の種類は特に制限されず、アンダーフィル材の所望の特性等に応じて選択してよい。例えば、アミン硬化剤、フェノール硬化剤、酸無水物硬化剤、ポリメルカプタン硬化剤、ポリアミノアミド硬化剤、イソシアネート硬化剤、ブロックイソシアネート硬化剤等が挙げられる。硬化剤は、1種を単独で用いても2種以上を組み合わせて用いてもよい。
アンダーフィル材は無機充填材を含有する。無機充填材の種類は、特に制限されない。具体的には、シリカ、アルミナ、炭酸カルシウム、ケイ酸ジルコニウム、ケイ酸カルシウム、窒化ケイ素、窒化アルミニウム、窒化ホウ素、ベリリア、ジルコニア、ジルコン、フォステライト、ステアタイト、スピネル、ムライト、チタニア、タルク、クレー、マイカ等の無機材料が挙げられる。また、難燃効果を有する無機充填材を用いてもよい。難燃効果を有する無機充填材としては、水酸化アルミニウム、水酸化マグネシウム、マグネシウムと亜鉛の複合水酸化物等の複合金属水酸化物、ホウ酸亜鉛などが挙げられる。
アンダーフィル材は、上述の成分に加えて、硬化促進剤、応力緩和剤、カップリング剤、着色剤等の各種添加剤を含んでもよい。アンダーフィル材は、以下に例示する添加剤以外にも必要に応じて当技術分野で周知の各種添加剤を含んでもよい。
アンダーフィル材は、硬化促進剤を含んでもよい。硬化促進剤の種類は特に制限されず、エポキシ樹脂及び硬化剤の種類、アンダーフィル材の所望の特性等に応じて選択できる。
アンダーフィル材は、応力緩和剤を含んでもよい。応力緩和剤としては、熱可塑性エラストマー、NR(天然ゴム)、NBR(アクリロニトリル-ブタジエンゴム)、アクリルゴム、ウレタンゴム、シリコーンゴム等の粒子などが挙げられる。応力緩和剤は、1種を単独で用いても2種以上を組み合わせて用いてもよい。
アンダーフィル材は、カップリング剤を含んでもよい。カップリング剤としては、エポキシシラン、フェニルシラン、メルカプトシラン、アミノシラン、フェニルアミノシラン、アルキルシラン、ウレイドシラン、ビニルシラン等のシラン化合物、チタン化合物、アルミニウムキレート化合物、アルミニウム/ジルコニウム化合物などが挙げられる。これらの中でもシラン化合物(シランカップリング剤)が好ましい。カップリング剤は、1種を単独で用いても2種以上を組み合わせて用いてもよい。
アンダーフィル材は、着色剤を含んでもよい。着色剤としては、カーボンブラック、有機染料、有機顔料、鉛丹、ベンガラ等が挙げられる。着色剤は、1種を単独で用いても2種以上を組み合わせて用いてもよい。
(質量減少率)
アンダーフィル材は、硬化物として175℃条件下に1000時間配置したときに、硬化物の全質量から無機充填材の質量を差し引いて得られる成分(「硬化物の無機充填材以外の成分」ともいう)の質量減少率が1.00質量%以下であることが好ましい。本開示の第1の実施形態に係るアンダーフィル材は、上記質量減少率が1.00質量%以下である。
m0:175℃、1000時間処理前の硬化物の質量(mg)
mB:175℃、1000時間処理後の硬化物の質量(mg)
mF:無機充填材の質量(mg)
アンダーフィル材は、基板と半導体素子との間の空隙を充填する際の粘度が充分に低いことが好ましい。具体的には、110℃における粘度が1.0Pa・s以下であることが好ましく、0.75Pa・s以下であることがより好ましく、0.50Pa・s以下であることがさらに好ましい。本開示においてアンダーフィル材の110℃における粘度は、レオメーター(例えば、ティー・エイ・インスツルメント・ジャパン株式会社製の「AR2000」)により、40mmのパラレルプレートにて、せん断速度:32.5/secの条件で測定される値である。
アンダーフィル材は、種々の実装技術に用いることができる。特に、フリップチップ型実装技術に用いるアンダーフィル材として好適である。例えば、バンプ等で接合された半導体素子と基板の間の隙間を充填する用途に好適に用いることができる。
本開示の半導体パッケージは、基板と、前記基板上に配置された半導体素子と、前記半導体素子を封止している上述したアンダーフィル材の硬化物と、を備える。
本開示の半導体パッケージの製造方法は、基板と、前記基板上に配置された半導体素子との間の空隙を上述したアンダーフィル材で充填する工程と、前記アンダーフィル材を硬化する工程と、を有する。
素子:縦20mm、横20mm、厚み725μmの素子
バンプ:高さ45μmの銅ポスト上に高さ15μm鉛フリーはんだを設けたもの、バンプピッチは200μm
基板:縦45mm、横45mm、厚み0.82mmのE-705G(日立化成株式会社、商品名)
ソルダーレジスト:SR7300G(日立化成株式会社、商品名)
表1に示す成分を表1に示す量(質量部)にて混合し、アンダーフィル材を調製した。各成分の詳細は下記のとおりである。
エポキシ樹脂2…トリグリシジル-p-アミノフェノール、エポキシ当量:95g/eq、商品名「jER 630」、三菱ケミカル株式会社
エポキシ樹脂3…トリメチロールプロパントリグリシジルエーテル、エポキシ当量:120g/eq、商品名「エポトート ZX-1542」、日鉄ケミカル&マテリアル株式会社
エポキシ樹脂4…1,3,5-トリス(4,5-エポキシペンチル)-1,3,5-トリアジン-2,4,6(1H,3H,5H)-トリオン、エポキシ当量:135g/eq、商品名「TEPIC-VL」、日産化学工業株式会社
硬化剤2…3,3’-ジエチル-4,4’-ジアミノジフェニルメタン、商品名「カヤハード A-A」、活性水素当量:63g/eq、日本化薬株式会社
硬化物の無機充填材以外の成分の質量減少率(質量%)は、硬化物の175℃、1000時間の処理前後における硬化物の質量を測定し、無機充填材の質量を求め、下記式によって算出した。
m0:175℃、1000時間処理前の硬化物の質量(mg)
mB:175℃、1000時間処理後の硬化物の質量(mg)
mF:無機充填材の質量(mg)
175℃で1000時間の熱履歴を経た半導体装置を、顕微鏡で観察し、フィレットクラックの有無を観察した。
本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に援用されて取り込まれる。
Claims (10)
- エポキシ樹脂と、硬化剤と、無機充填材とを含有し、硬化物として175℃の条件下に1000時間配置したときに、硬化物の全質量から無機充填材の質量を差し引いて得られる成分の質量減少率が1.00質量%以下である、アンダーフィル材。
- 前記エポキシ樹脂がエポキシ基及びイソシアヌレート環を有するエポキシ樹脂を含む、請求項1に記載のアンダーフィル材。
- 前記エポキシ基及びイソシアヌレート環を有するエポキシ樹脂における前記エポキシ基と前記イソシアヌレート環とが、炭素数1以上の鎖式炭化水素基により連結されている、請求項2に記載のアンダーフィル材。
- 前記エポキシ樹脂が、分子内にエポキシ基以外の炭素-酸素単結合(C-O)を有しないエポキシ樹脂を含む、請求項1~請求項3のいずれか1項に記載のアンダーフィル材。
- エポキシ樹脂と、硬化剤と、無機充填材と、を含有し、
前記エポキシ樹脂が、エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂を含む、
アンダーフィル材。 - 前記エポキシ基及びイソシアヌレート環を有し、前記エポキシ基と前記イソシアヌレート環とが炭素数1以上の鎖式炭化水素基により連結されているエポキシ樹脂が、分子内にエポキシ基以外の炭素-酸素単結合(C-O)を有しない、請求項5に記載のアンダーフィル材。
- 前記硬化剤がアミン硬化剤を含む、請求項1~請求項6のいずれか1項に記載のアンダーフィル材。
- パワー半導体用である請求項1~請求項7のいずれか1項に記載のアンダーフィル材。
- 基板と、前記基板上に配置された半導体素子と、前記半導体素子を封止している請求項1~請求項8のいずれか1項に記載のアンダーフィル材の硬化物と、を備える、半導体パッケージ。
- 基板と、前記基板上に配置された半導体素子との間の空隙を請求項1~請求項8のいずれか1項に記載のアンダーフィル材で充填する工程と、前記アンダーフィル材を硬化する工程と、を有する、半導体パッケージの製造方法。
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| KR (1) | KR102668249B1 (ja) |
| TW (1) | TWI828694B (ja) |
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| JP2011132299A (ja) * | 2009-12-22 | 2011-07-07 | Shin-Etsu Chemical Co Ltd | シリコーン樹脂組成物 |
| JP2016037507A (ja) * | 2014-08-05 | 2016-03-22 | 日本化薬株式会社 | エポキシ樹脂組成物およびその硬化物 |
| JP2017031268A (ja) * | 2015-07-30 | 2017-02-09 | 株式会社スリーボンド | 加熱硬化性エポキシ樹脂組成物 |
| JP2017039842A (ja) * | 2015-08-19 | 2017-02-23 | 新日鉄住金化学株式会社 | 難燃性エポキシ樹脂組成物及びその硬化物 |
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| JP3818267B2 (ja) | 2003-02-25 | 2006-09-06 | 松下電工株式会社 | アンダーフィル用樹脂組成物及び半導体装置 |
| JP5692212B2 (ja) | 2005-12-08 | 2015-04-01 | 日立化成株式会社 | 電子部品用液状樹脂組成物及びこれを用いた電子部品装置 |
| JP2009091510A (ja) | 2007-10-11 | 2009-04-30 | Hitachi Chem Co Ltd | 液状エポキシ樹脂組成物及び該組成物を用いた半導体装置 |
| JPWO2012070387A1 (ja) | 2010-11-25 | 2014-05-19 | 旭化成イーマテリアルズ株式会社 | エポキシ樹脂および樹脂組成物 |
| JP6331570B2 (ja) * | 2014-03-28 | 2018-05-30 | 日立化成株式会社 | アンダーフィル材及び該アンダーフィル材により封止する電子部品とその製造方法 |
| CN114410066A (zh) | 2016-05-11 | 2022-04-29 | 日立化成株式会社 | 密封用液状树脂组合物及电子部件装置 |
| KR102641596B1 (ko) * | 2017-11-14 | 2024-02-27 | 가부시키가이샤 코키 | 보강용 수지 조성물 및 전자 부품 장치 |
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- 2019-05-14 JP JP2020521170A patent/JP7400714B2/ja active Active
- 2019-05-14 WO PCT/JP2019/019141 patent/WO2019225408A1/ja not_active Ceased
- 2019-05-21 TW TW108117398A patent/TWI828694B/zh active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132299A (ja) * | 2009-12-22 | 2011-07-07 | Shin-Etsu Chemical Co Ltd | シリコーン樹脂組成物 |
| JP2016037507A (ja) * | 2014-08-05 | 2016-03-22 | 日本化薬株式会社 | エポキシ樹脂組成物およびその硬化物 |
| JP2017031268A (ja) * | 2015-07-30 | 2017-02-09 | 株式会社スリーボンド | 加熱硬化性エポキシ樹脂組成物 |
| JP2017039842A (ja) * | 2015-08-19 | 2017-02-23 | 新日鉄住金化学株式会社 | 難燃性エポキシ樹脂組成物及びその硬化物 |
Also Published As
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| KR20210013072A (ko) | 2021-02-03 |
| KR102668249B1 (ko) | 2024-05-21 |
| TWI828694B (zh) | 2024-01-11 |
| JPWO2019225408A1 (ja) | 2021-06-17 |
| TW202003774A (zh) | 2020-01-16 |
| JP7400714B2 (ja) | 2023-12-19 |
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