WO2010073559A1 - 液状樹脂組成物および半導体装置 - Google Patents
液状樹脂組成物および半導体装置 Download PDFInfo
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- WO2010073559A1 WO2010073559A1 PCT/JP2009/006981 JP2009006981W WO2010073559A1 WO 2010073559 A1 WO2010073559 A1 WO 2010073559A1 JP 2009006981 W JP2009006981 W JP 2009006981W WO 2010073559 A1 WO2010073559 A1 WO 2010073559A1
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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
- H10W74/476—Organic materials comprising silicon
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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
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4071—Curing agents not provided for by the groups C08G59/42 - C08G59/66 phosphorus containing compounds
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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
- C08G59/68—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 catalysts 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
- C08G59/68—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 catalysts used
- C08G59/686—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 catalysts used containing nitrogen
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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
- C08G59/68—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 catalysts used
- C08G59/688—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 catalysts used containing phosphorus
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- 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
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- H—ELECTRICITY
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- 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
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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
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- H—ELECTRICITY
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- 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
- H10W74/473—Encapsulations, e.g. protective coatings characterised by their materials comprising organic materials, e.g. plastics or resins containing a filler
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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
- H10W74/481—Encapsulations, e.g. protective coatings characterised by their materials comprising semiconductor materials
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/20—Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
- H10W72/251—Materials
- H10W72/252—Materials comprising solid metals or solid metalloids, e.g. PbSn, Ag or Cu
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/321—Structures or relative sizes of die-attach connectors
- H10W72/325—Die-attach connectors having a filler embedded in a matrix
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/352—Materials of die-attach connectors comprising metals or metalloids, e.g. solders
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/353—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics
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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
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/353—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics
- H10W72/354—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics comprising polymers
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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
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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
- H10W74/01—Manufacture or treatment
- H10W74/012—Manufacture or treatment of encapsulations on active surfaces of flip-chip devices, e.g. forming underfills
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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
- H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
- H10W74/15—Encapsulations, e.g. protective coatings characterised by their shape or disposition on active surfaces of flip-chip devices, e.g. underfills
Definitions
- the present invention relates to a liquid resin composition and a semiconductor device.
- a semiconductor element and a substrate are electrically connected by solder bumps.
- a liquid resin composition called an underfill material is filled between the semiconductor element and the substrate to reinforce the periphery of the solder bumps.
- the under-filling type flip-chip package is used to prevent destruction of the Low-K layer and cracks in the solder bumps due to thermal stress.
- the fill material is required to further reduce thermal expansion.
- the underfill material In order to reduce the thermal expansion of the underfill material, it is essential to increase the filling of the filler. However, as the filling rate of the filler increases, the viscosity also increases, and the underfill material can be filled into the gap between the semiconductor element and the substrate. There is a problem that the productivity is lowered significantly.
- An object of the present invention is to provide a liquid resin composition capable of high filler filling in a flip chip semiconductor device and excellent in filling into a narrow gap, and a highly reliable semiconductor device using the same. is there.
- liquid resin composition that can be filled with a high filler in a flip-chip mounting type semiconductor device and that is excellent in filling in a narrow gap, and a highly reliable semiconductor device using the liquid resin composition.
- the present invention relates to a liquid resin composition used for sealing between a semiconductor element and a substrate in a flip-chip type semiconductor device, and comprises (A) an epoxy resin (B) an epoxy resin curing agent (C).
- the contact angle ( ⁇ ) measured according to the above is 30 degrees or less.
- the epoxy resin used in the present invention is not particularly limited in molecular weight and structure as long as it has two or more epoxy groups in one molecule.
- novolak type epoxy resins such as phenol novolac type epoxy resin and cresol novolak type epoxy resin, bisphenol type epoxy resins such as bisphenol A type epoxy resin and bisphenol F type epoxy resin; N, N-diglycidylaniline, N, N— Aromatic glycidylamine type epoxy resins such as diglycidyl toluidine, diaminodiphenylmethane type glycidylamine, aminophenol type glycidylamine; hydroquinone type epoxy resin, biphenyl type epoxy resin, stilbene type epoxy resin, triphenolmethane type epoxy resin, triphenolpropane Type epoxy resin, alkyl modified triphenol methane type epoxy resin, triazine core-containing epoxy resin, dicyclopentadiene modified phenol type epoxy Epoxy resins such as cis-resin, naphthol type
- an epoxy resin containing a structure in which a glycidyl structure or a glycidylamine structure is bonded to an aromatic ring is more preferable from the viewpoint of high heat resistance, mechanical properties, and moisture resistance. It is more preferable to limit the amount to be used from the viewpoint of lowering reliability, particularly adhesiveness. These may be used alone or in combination of two or more.
- the liquid resin composition of the present invention is liquid at room temperature
- the one type of (A) epoxy resin is at room temperature.
- the mixture of all of the two or more types of (A) epoxy resins is liquid at room temperature. Therefore, when the (A) epoxy resin is a combination of two or more types of (A) epoxy resins, the (A) epoxy resin may be a combination of epoxy resins that are all liquid at room temperature, or partly If the mixture becomes liquid at room temperature by mixing with other epoxy resins that are solid at room temperature, the liquid epoxy resin that is liquid at room temperature and the epoxy resin that is solid at room temperature It may be a combination.
- the epoxy resin is a combination of two or more types of epoxy resins
- it is necessary to produce a liquid resin composition by mixing all the epoxy resins to be used and then mixing with other components. Rather, the epoxy resin to be used may be mixed separately to produce a liquid resin composition.
- the epoxy resin is liquid at room temperature means that when all the epoxy resins used as the epoxy resin component (A) are mixed, the mixture becomes liquid at room temperature.
- room temperature refers to 25 ° C.
- liquid refers to the resin composition having fluidity.
- the content of the epoxy resin is not particularly limited, but is preferably 5 to 30% by weight, particularly preferably 5 to 20% by weight, based on the entire liquid resin composition of the present invention. When the content is within the above range, the reactivity, the heat resistance and mechanical strength of the composition, and the flow characteristics at the time of sealing are excellent.
- the (B) epoxy resin curing agent used in the present invention is not particularly limited as long as it can cure the epoxy resin.
- curing agent an amine hardening
- amine curing agent examples include diethylenetriamine, triethylenetetraamine, tetraethylenepentamine, trimethylhexamethylenediamine, 2-methylpentamethylenediamine aliphatic polyamine; m-xylenediamine, isophoronediamine, 1,3-bisamino.
- Cycloaliphatic polyamines such as methylcyclohexane, bis (4-aminocyclohexyl) methane, norbornenediamine, 1,2-diaminocyclohexane, N-aminoethylpiperazine, 1,4-bis (2-amino-2-methylpropyl) piperazine
- Piperazine type polyamines such as diaminodiphenylmethane, m-phenylenediamine, diaminodiphenylsulfone, diethyltoluenediamine, trimethylenebis (4-aminobenzoate), polytetra Chiren'okishido - and aromatic polyamines such as di -P- amino benzoate.
- Examples of the acid anhydride include tetrahydro anhydride, hexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, methyl nadic anhydride, hydrogenated methyl nadic anhydride, trialkyltetrahydrophthalic anhydride, methylcyclohexene tetracarboxylic acid.
- An amine curing agent is particularly preferable from the viewpoint of high adhesion and moisture resistance reliability.
- These amine curing agents may be used singly or in combination of two or more, and considering the sealing application of semiconductor devices, heat resistance, electrical characteristics, mechanical characteristics, adhesion, moisture resistance
- Aromatic polyamine type curing agents are more preferred from the viewpoint of increasing the viscosity.
- the liquid resin composition of the present invention is used as an underfill, it is more preferable to exhibit a liquid state at room temperature (25 ° C.).
- the content of the epoxy resin curing agent is not particularly limited, but is preferably 5 to 30% by weight, particularly preferably 5 to 20% by weight, based on the entire liquid resin composition of the present invention. When the content is within the above range, the reactivity, the mechanical properties of the composition, the heat resistance and the like are excellent.
- the ratio of the active hydrogen equivalent of the (B) epoxy resin curing agent to the epoxy equivalent of the (A) epoxy resin is preferably 0.6 to 1.4, particularly preferably 0.7 to 1.3.
- the ratio of the active hydrogen equivalent of the (B) epoxy resin curing agent to the epoxy equivalent of the (A) epoxy resin is within the above range, the reactivity and the heat resistance of the resin composition are particularly improved.
- the liquid resin composition contains the (C) filler. Reliability can be particularly improved.
- fillers examples include silicates such as talc, fired clay, unfired clay, mica, and glass; titanium oxide, alumina, fused silica (fused spherical silica, fused crushed silica), synthetic silica, crystalline silica, and the like.
- These (C) fillers may be used alone or in combination of two or more. Among these, fused silica, crystalline silica, and synthetic silica powder are preferable because the heat resistance, moisture resistance, strength, and the like of the resin composition can be improved.
- the shape of the filler is not particularly limited, but the shape is preferably spherical from the viewpoint of viscosity and flow characteristics.
- the maximum particle size and the average particle size of the filler are not particularly limited, but the maximum particle size is preferably 25 ⁇ m or less and the average particle size is preferably 0.1 ⁇ m or more and 10 ⁇ m or less.
- the maximum particle size is preferably 25 ⁇ m or less and the average particle size is preferably 0.1 ⁇ m or more and 10 ⁇ m or less.
- the content of the filler is preferably 60% by weight or more and 80% by weight or less, and more preferably 70% by weight or more and 80% by weight or less of the entire liquid resin composition of the present invention.
- the content is equal to or higher than the lower limit value, the effect of improving the reliability of the semiconductor device is enhanced, and when the content is equal to or lower than the upper limit value, the balance between the narrow gap filling property and the reliability is excellent.
- the liquid resin composition of the present invention is characterized in that the contact angle ( ⁇ ) measured at 110 ° C. according to JIS R3257 is 30 degrees or less.
- the sealing resin is sealed by capillary action. Therefore, the present inventor has focused on the contact angle at high temperature that actually seals the liquid resin composition in the flip-chip semiconductor device, and induced capillary action by reducing the contact angle at high temperature. It has led to the development of a liquid resin composition that improves the narrow gap filling property of the composition and has a good filling property even when the filler is particularly highly filled.
- the contact angle ( ⁇ ) of the liquid resin composition of the present invention is preferably greater than 0 degree and 30 degrees or less. By setting it as 30 degrees or less at 110 degreeC, the fall of the wettability at the time of sealing of a liquid resin composition can be suppressed, and the filling property to a narrow gap can be improved.
- the contact angle ( ⁇ ) at 110 ° C. of the liquid sealing resin composition of the present invention is performed in accordance with the ⁇ / 2 method (liquid suitable method) JIS R3257, and with respect to a slide glass (S1111 manufactured by Matsunami Glass Industrial Co., Ltd.). The contact angle was determined.
- the liquid resin composition of the present invention preferably contains (D) a Lewis base or a salt thereof in that the contact angle ( ⁇ ) can be easily reduced.
- (D) As the Lewis base or a salt thereof for example, 1,8-diazabicyclo (5.4.0) undecene-7,1,5-diazabicyclo (4.3.0) nonene-5,1,4-diazadicyclo (2.2.2)
- Amine compounds such as octane, imidazoles, diethylamine, triethylenediamine, benzyldimethylamine, 2- (dimethylaminomethylphenol) 2,4,6-tris (dimethylaminomethyl) phenol, or salts thereof
- Phosphine compounds such as triphenylphosphine, phenylphosphine, and diphenylphosphine.
- tertiary amine compounds such as benzyldimethylamine, 2- (dimethylaminomethylphenol), 2,4,6-tris (dimethylaminomethyl) phenol, imidazoles, 1,8 diazabicyclo (5.4.0) Undecene-7, 1,5-diazabicyclo (4.3.0) nonene-5, 1,4-diazadicyclo (2.2.2) octane or a salt thereof is preferable.
- 1,8-diazabicyclo (5.4.0) undecene-7 and 1,5-diazabicyclo (4.3.0) nonene-5 or salts thereof are used.
- Specific examples of the salt of Lewis base (D) include a Lewis base phenol salt and a 1,8-diazabicyclo (5.4.0) undecene-7 phenol salt.
- the content of the Lewis base and the salt thereof is not particularly limited, but is preferably 0.005% by weight or more and 0.3% by weight or less, and preferably 0.01% by weight or more and 0.2% by weight or less of the entire liquid resin composition of the present invention. % By weight or less is particularly preferable, and 0.02% by weight or more and 0.1% by weight or less is more preferable.
- the content is smaller than the lower limit, the contact angle ( ⁇ ) at 110 ° C. is not sufficiently reduced, and the narrow gap filling property is lowered.
- content is larger than the said upper limit, the viscosity of a liquid resin composition will be caused and a fillability will fall.
- the Lewis base or a salt thereof is not particularly limited, but is previously mixed with (A) an epoxy resin and / or (B) an epoxy resin curing agent before producing the liquid resin composition of the present invention. It is preferable. Thereby, the dispersibility of (D) Lewis base or a salt thereof in (A) epoxy resin and / or (B) epoxy resin curing agent is improved, and the effect of reducing the contact angle ( ⁇ ) particularly at 110 ° C. Rise. Moreover, it is excellent in the improvement effect of the narrow gap filling property especially when (C) the filler is highly filled.
- mixing in advance means stirring and mixing at room temperature, and there is no upper limit for the stirring and mixing time.
- D From the point of uniformly dispersing the Lewis base or a salt thereof in (A) the epoxy resin and / or (B) the epoxy resin curing agent, it is preferable to stir and mix for 1 hour or more.
- the liquid resin composition of the present invention comprises (D) a tetra-substituted phosphonium compound, a phosphobetaine as the compound (E) in that the contact angle ( ⁇ ) at 110 ° C. can be easily reduced, similarly to the Lewis base or a salt thereof. It is preferable to include at least one selected from a compound, an adduct of a phosphine compound and a quinone compound, and an adduct of a phosphonium compound and a silane compound.
- Examples of the tetra-substituted phosphonium compound of compound (E) include compounds represented by the following general formula (1).
- P represents a phosphorus atom.
- R1, R2, R3 and R4 each represents an aromatic group or an alkyl group.
- A represents a functional group selected from a hydroxyl group, a carboxyl group, and a thiol group.
- An anion of an aromatic compound having at least one of the groups in the aromatic ring, AH represents an aromatic compound having at least one functional group selected from a hydroxyl group, a carboxyl group, and a thiol group in the aromatic ring
- X and y are integers of 1 to 3
- z is an integer of 0 to 3
- x y.
- R1, R2, R3 and R4 are preferably an aromatic group or an alkyl group having 1 to 10 carbon atoms. Further, R1, R2, R3 and R4 bonded to the phosphorus atom are phenyl groups, and AH is a compound having a hydroxyl group bonded to an aromatic ring, that is, a phenol, and A is an anion of the phenol. This is preferable because the effect of reducing the contact angle ( ⁇ ) at 110 ° C. is enhanced.
- Examples of the phosphobetaine compound (E) include compounds represented by the following general formula (2).
- P represents a phosphorus atom
- X1 represents an alkyl group having 1 to 3 carbon atoms
- Y1 represents a hydroxyl group
- f is an integer of 0 to 5
- g is 0 to It is an integer of 3.
- Examples of the adduct of the compound (E) with the phosphine compound and the quinone compound include a compound represented by the following general formula (3).
- P represents a phosphorus atom.
- R5, R6 and R7 represent an alkyl group having 1 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, and these are the same as each other.
- R8, R9 and R10 each represents a hydrogen atom or a hydrocarbon group having 1 to 12 carbon atoms, which may be the same or different from each other, and R8 and R9 are bonded to each other; (It may be an annular structure.)
- Examples of the phosphine compound used in the adduct of the compound (E) with the phosphine compound and the quinone compound include triphenylphosphine, tris (alkylphenyl) phosphine, tris (alkoxyphenyl) phosphine, trinaphthylphosphine, tris (benzyl) phosphine, and the like.
- the aromatic ring is preferably unsubstituted or has a substituent such as an alkyl group or an alkoxyl group. Examples of the substituent such as an alkyl group and an alkoxyl group include those having 1 to 6 carbon atoms. From the viewpoint of availability, triphenylphosphine is preferable.
- examples of the quinone compound used in the adduct of the compound (E) with the phosphine compound and the quinone compound include o-benzoquinone, p-benzoquinone and anthraquinones, and among them, p-benzoquinone is preferable from the viewpoint of storage stability.
- Examples of the adduct of the compound (E) with the phosphonium compound and the silane compound include compounds represented by the following general formula (4).
- P represents a phosphorus atom and Si represents a silicon atom.
- R11, R12, R13 and R14 are each an organic group or an aliphatic group having an aromatic ring or a heterocyclic ring. And these may be the same or different from each other, wherein X2 is an organic group bonded to the groups Y2 and Y3, where X3 is an organic group bonded to the groups Y4 and Y5.
- Y2 and Y3 represent a group formed by releasing a proton from a proton donating group, and groups Y2 and Y3 in the same molecule are bonded to a silicon atom to form a chelate structure.
- a donating group represents a group formed by releasing protons, and groups Y4 and Y5 in the same molecule are bonded to a silicon atom to form a chelate structure.
- X2 and X3 are the same as each other And or different, Y2, Y3, Y4, and Y5 is .Z1 may be the same or different from each other is an organic group or an aliphatic group, an aromatic ring or a heterocyclic ring.
- examples of R11, R12, R13, and R14 include phenyl group, methylphenyl group, methoxyphenyl group, hydroxyphenyl group, naphthyl group, hydroxynaphthyl group, benzyl group, methyl group, ethyl group, Examples thereof include n-butyl group, n-octyl group and cyclohexyl group.
- aromatic group having a substituent such as phenyl group, methylphenyl group, methoxyphenyl group, hydroxyphenyl group, hydroxynaphthyl group or the like
- a substituted aromatic group is more preferred.
- X2 is an organic group bonded to Y2 and Y3.
- X3 is an organic group that binds to groups Y4 and Y5.
- Y2 and Y3 are groups formed by proton-donating groups releasing protons, and groups Y2 and Y3 in the same molecule are combined with a silicon atom to form a chelate structure.
- Y4 and Y5 are groups formed by proton-donating groups releasing protons, and groups Y4 and Y5 in the same molecule are combined with a silicon atom to form a chelate structure.
- the groups X2 and X3 may be the same or different from each other, and the groups Y2, Y3, Y4, and Y5 may be the same or different from each other.
- the groups represented by -Y2-X2-Y3- and -Y4-X3-Y5- in general formula (4) are composed of groups in which the proton donor releases two protons.
- proton donors that is, compounds before releasing two protons include, for example, catechol, pyrogallol, 1,2-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2,2′-biphenol, 1,1 '-Bi-2-naphthol, salicylic acid, 1-hydroxy-2-naphthoic acid, 3-hydroxy-2-naphthoic acid, chloranilic acid, tannic acid, 2-hydroxybenzyl alcohol, 1,2-cyclohexanediol, 1,2 -Propanediol and glycerin and the like.
- catechol, 1,2-dihydroxynaphthalene, and 2,3-dihydroxynaphthalene are more preferable.
- Z1 in the general formula (4) represents an organic group or an aliphatic group having an aromatic ring or a heterocyclic ring, and specific examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, Aliphatic hydrocarbon groups such as hexyl group and octyl group, aromatic hydrocarbon groups such as phenyl group, benzyl group, naphthyl group and biphenyl group, glycidyloxypropyl group, mercaptopropyl group, aminopropyl group and vinyl group And reactive substituents.
- a methyl group, an ethyl group, a phenyl group, a naphthyl group, and a biphenyl group are more preferable from the viewpoint of thermal stability.
- the liquid resin composition of the present invention contains (D) a Lewis base or a salt thereof, (D) the content of the Lewis base or a salt thereof (weight ratio (D) / (C)) relative to the content of (C) filler
- the liquid resin composition of the present invention is at least one selected from a tetra-substituted phosphonium compound, a phosphobetaine compound, an adduct of a phosphine compound and a quinone compound, and an adduct of a phosphonium compound and a silane compound as the compound (E).
- the content (weight ratio (E) / (C)) of the compound (E) with respect to the content of the (C) filler is preferably 0.00006 or more and 0.005 or less. Particularly preferred is 0001 or more and 0.0035 or less. Thereby, the effect which reduces the contact angle ((theta)) in 110 degreeC becomes high.
- the liquid resin composition of the present invention includes a diluent, pigment, flame retardant, and leveling as necessary. Additives such as agents and antifoaming agents can be used.
- liquid resin composition of the present invention the above-described components and additives are dispersed and kneaded using an apparatus such as a planetary mixer, three rolls, two hot rolls, and a laika machine, and then defoamed under vacuum. Can be manufactured.
- the semiconductor device of the present invention is manufactured using the liquid resin composition of the present invention.
- a flip chip type semiconductor device can be given.
- a semiconductor element provided with a solder electrode is connected to a substrate, and a gap between the semiconductor element and the substrate is sealed.
- a solder resist is generally formed so that the solder does not flow in a region other than the portion where the solder electrode on the substrate side is joined.
- the gap between the semiconductor element and the substrate is filled with the liquid resin composition of the present invention.
- a method utilizing a capillary phenomenon is common. Specifically, the liquid resin composition of the present invention is applied to one side of a semiconductor element and then poured into the gap between the semiconductor element and the substrate by capillary action, and the liquid resin composition is applied to two sides of the semiconductor element. Thereafter, a method of pouring into the gap between the semiconductor element and the substrate by capillary action, a through hole is opened in the central part of the semiconductor element, the liquid resin composition of the present invention is applied around the semiconductor element, and then the semiconductor element and the substrate And a method of pouring into the gap by capillary action. Further, instead of applying the whole amount at once, a method of applying in two steps is also performed. It is also possible to use methods such as potting and printing.
- the curing conditions are not particularly limited, but can be cured by heating for 1 to 12 hours in a temperature range of 100 to 170 ° C., for example. Further, for example, heat curing may be performed while changing the temperature stepwise, such as heating at 100 ° C. for 1 hour and subsequently heating at 150 ° C. for 2 hours.
- Such semiconductor devices include flip-chip semiconductor devices, cavity down type BGA (Ball Grid Array), POP (Package on Package) type BGA (Ball Grid Array), TAB (Tape Automated Bonding) type BGA (Ball). Grid Array) and CSP (Chip Scale Package).
- Example 1 (A) 21.0% by weight (EXA-830LVP manufactured by DIC Corporation) as an epoxy resin, and 7.9% by weight amine curing agent (Kayahard AA manufactured by Nippon Kayaku Co., Ltd.) as an epoxy resin curing agent (C) 71% by weight as filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle size 5 ⁇ m, average particle size 1 ⁇ m), and (D) 1,8-diazabicyclo (5, 4, 0) Undecene-7 (DBU) 0.1% by weight was kneaded and dispersed with three rolls, and then vacuum degassed to obtain a liquid resin composition.
- (A) epoxy resin and DBU used what was previously stirred and mixed at room temperature for 1 hour.
- Example 2 A liquid resin composition was prepared in the same manner as in Example 1 except that the DBU content was reduced and the total content was as follows.
- (A) epoxy resin and DBU used what was previously stirred and mixed at room temperature for 1 hour.
- Example 3 A resin composition was prepared in the same manner as in Example 1 except that the DBU content was increased and the total content was as follows.
- the mixture was kneaded and dispersed with a vacuum, and then vacuum degassed to obtain a liquid resin composition.
- Example 4 A liquid resin composition was prepared in the same manner as in Example 1 except that the filler content was increased and the total content was as follows.
- Kayahard AA 7.5% by weight
- C 73.1% by weight as filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle size 5 ⁇ m, average particle size 1 ⁇ m), and
- D 1,8-diazabicyclo (5,5) as Lewis base 4,0) undecene-7
- B the epoxy resin curing agent and DBU were previously mixed with stirring at room temperature for 1 hour.
- Example 5 A liquid resin composition was prepared in the same manner as in Example 1 except that DBU-phenol salt (U-CAT SA1 manufactured by Sun Apro Co., Ltd.) was used instead of DBU.
- DBU-phenol salt U-CAT SA1 manufactured by Sun Apro Co., Ltd.
- the (A) epoxy resin and the DBU-phenol salt were previously mixed with stirring for 1 hour at room temperature.
- Example 6 A liquid resin composition was prepared in the same manner as in Example 1 except that a tetra-substituted phosphonium compound (E) represented by the following formula (5) was used instead of DBU. Note that (A) the epoxy resin and the tetra-substituted phosphonium compound of the compound (E) represented by the following formula (5) are not mixed at room temperature in advance.
- Example 7 A liquid resin composition was prepared in the same manner as in Example 1 except that the phosphobetaine compound of the compound (E) represented by the following formula (6) was used instead of DBU. In addition, the (A) epoxy resin and the phosphobetaine compound of the compound (E) represented by the following formula (6) are not mixed at room temperature in advance.
- Example 8 (A) As an epoxy resin (EXA-830LVP manufactured by DIC Corporation) 14.1% by weight and (B) As an epoxy resin curing agent, an acid anhydride curing agent (HN-2200R manufactured by Hitachi Chemical Co., Ltd.) 14.4 % By weight and (C) 71% by weight of the compound (E) represented by the following formula (7) as a filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle diameter 5 ⁇ m, average particle diameter 1 ⁇ m) After 0.5% by weight of the tetra-substituted phosphonium compound was kneaded and dispersed with three rolls, vacuum degassing was performed to obtain a liquid resin composition. Note that (A) the epoxy resin and the tetra-substituted phosphonium compound of the compound (E) represented by the following formula (7) are not mixed at room temperature in advance.
- Example 9 (A) 21.1% by weight (EXA-830LVP manufactured by DIC Corporation) as an epoxy resin, and 7.9% by weight amine curing agent (Kayahard AA manufactured by Nippon Kayaku Co., Ltd.) as an epoxy resin curing agent (C) 70.9% by weight as filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle size 5 ⁇ m, average particle size 1 ⁇ m), and (D) 1,8-diazabicyclo (5,5) as Lewis base 4, 0) 0.1% by weight of undecene-7 (DBU) was kneaded and dispersed with three rolls, and then vacuum degassed to obtain a liquid sealing resin composition.
- Example 10 (A) 21.1% by weight (EXA-830LVP manufactured by DIC Corporation) as an epoxy resin, and 7.9% by weight amine curing agent (Kayahard AA manufactured by Nippon Kayaku Co., Ltd.) as an epoxy resin curing agent (C) 70.9% by weight as filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle size 5 ⁇ m, average particle size 1 ⁇ m), and (D) 1,8-diazabicyclo (5,5) as Lewis base 4, 0) 0.1% by weight of undecene-7 (DBU) was kneaded and dispersed with three rolls, and then vacuum degassed to obtain a liquid sealing resin composition.
- Epoxy resin and DBU used what was previously stirred and mixed at room temperature for 12 hours.
- Example 11 (A) 21.1% by weight (EXA-830LVP manufactured by DIC Corporation) as an epoxy resin, and 7.9% by weight amine curing agent (Kayahard AA manufactured by Nippon Kayaku Co., Ltd.) as an epoxy resin curing agent (C) 70.9% by weight as filler (manufactured by Admatechs Co., Ltd., Admafine SO-E3, maximum particle size 5 ⁇ m, average particle size 1 ⁇ m), and (D) 1,8-diazabicyclo (5,5) as Lewis base 4, 0) 0.1% by weight of undecene-7 (DBU) was kneaded and dispersed with three rolls, and then vacuum degassed to obtain a liquid sealing resin composition. Note that (B) the epoxy resin curing agent and DBU were previously stirred and mixed at room temperature for 12 hours.
- Fluidity A glass cell having a parallel plane with a gap was prepared by bonding a glass plate (top) of 18 mm ⁇ 18 mm and a glass plate (bottom) so that a gap of 70 ⁇ 10 ⁇ m was left therebetween. This glass cell was placed on a hot plate and allowed to stand for 5 minutes while adjusting the temperature so that the upper surface temperature of the glass plate (upper) was 110 ⁇ 1 ° C. Thereafter, an appropriate amount of the liquid resin composition was applied to one side of the glass cell, and the time required to flow 18 mm (flow time) was measured. Each code is as follows. AA: The flow time was 100 seconds or more and less than 150 seconds. BB: The flow time was 150 seconds or more and less than 250 seconds. CC: The flow time was 250 seconds or more and less than 300 seconds. DD: The flow time was 300 seconds or more.
- the contact angle ((theta)) of the liquid resin composition with respect to the slide glass was measured.
- the contact angle was measured using a CA-V type automatic contact angle meter manufactured by Kyowa Interface Chemical Co., Ltd. according to JIS R3257 by the ⁇ / 2 method (liquid suitable method) in a measurement atmosphere of 110 ° C. That is, the smaller the contact angle, the better the wettability.
- 15 mm ⁇ 15 mm ⁇ 0.8 mmt is formed by using polyimide as a circuit protection film of a semiconductor chip on a PHASE-2TEG wafer manufactured by Hitachi Ultra LSI Co., and lead-free solder of Sn / Ag / Cu composition as a solder bump. Cut and used.
- a 0.8 mmt glass epoxy substrate equivalent to FR5 manufactured by Sumitomo Bakelite Co., Ltd. is used as a base, and a solder resist PSR4000 / AUS308 manufactured by Taiyo Ink Manufacturing Co., Ltd. is formed on both sides thereof, and the solder bump arrangement described above is formed on one side
- a gold-plated pad corresponding to the above was cut into a size of 50 mm ⁇ 50 mm and used.
- TSF-6502 manufactured by Kester, rosin flux
- a flux is uniformly applied to a sufficiently smooth metal or glass plate using a doctor blade to a thickness of about 50 ⁇ m, and then a semiconductor chip having solder bumps mounted on the flux film using a flip chip bonder.
- the solder bump mounting surface side was lightly contacted and then released, the flux was transferred to the solder bump, and then the semiconductor chip was pressed onto the circuit board.
- it heat-processed in IR reflow furnace and produced by melt-bonding a solder bump. Cleaning was performed using a cleaning liquid after the melt bonding.
- the filling and sealing method of the liquid resin composition was carried out by heating the prepared semiconductor device on a hot plate at 110 ° C., applying the prepared liquid resin composition on one side of the semiconductor chip, filling the gap, and then filling the gap at 150 ° C.
- the liquid resin composition was heated and cured in an oven for 120 minutes to obtain a semiconductor device for evaluation test.
- Comparative Examples 1 and 2 had a problem in the filling property of the manufactured semiconductor device, the reflow test and the temperature cycle test were not performed.
- the semiconductor devices of Examples 1 to 11 operated without problems.
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Abstract
Description
[1] (A)エポキシ樹脂(B)エポキシ樹脂硬化剤(C)フィラーを含む液状樹脂組成物であって、(C)フィラーの含有量が、前記液状樹脂組成物全体の60重量%以上80重量%以下であり、前記液状樹脂組成物の110℃における、JIS R3257に準拠して測定される接触角(θ)が、30度以下であることを特徴とする液状樹脂組成物。
[2] [1]記載の液状樹脂組成物において、(D)ルイス塩基またはその塩、をさらに含むことを特徴とする液状樹脂組成物。
[3] [2]記載の液状樹脂組成物において、(D)ルイス塩基またはその塩が、1,8-ジアザビシクロ(5.4.0)ウンデセン-7または1,5-ジアザビシクロ(4.3.0)ノネン-5、またはそれらの塩であることを特徴とする液状樹脂組成物。
[4] [2]または[3]記載の液状樹脂組成物において、(D)ルイス塩基またはその塩の含有量が、前記液状樹脂組成物全体の0.005重量%以上0.3重量%以下であることを特徴とする液状樹脂組成物。
[5] [1]乃至[4]いずれかに記載の液状樹脂組成物において、(E)テトラ置換ホスホニウム化合物、ホスホベタイン化合物、ホスフィン化合物とキノン化合物との付加物、およびホスホニウム化合物とシラン化合物との付加物から選ばれた少なくとも1種の化合物、をさらに含むことを特徴とする液状樹脂組成物。
[6] [1]乃至[5]いずれかに記載の液状樹脂組成物において、(C)フィラーの最大粒子径が25μm以下、かつ平均粒子径が0.1μm以上10μm以下であることを特徴とする液状樹脂組成物。
[7] [1]乃至[6]いずれかに記載の液状樹脂組成物において、(C)フィラーの含有量が、前記液状樹脂組成物全体の70重量%以上80重量%以下であることを特徴とする液状樹脂組成物。
[8] [2]乃至[7]いずれかに記載の液状樹脂組成物において、(C)フィラーの含有量に対する(D)ルイス塩基またはその塩の含有量((D)/(C))が、0.00006以上0.005以下であることを特徴とする液状樹脂組成物。
[9] [1]乃至[8]いずれかに記載の液状樹脂組成物において、(B)エポキシ樹脂硬化剤が、アミン硬化剤または酸無水物であることを特徴とする液状樹脂組成物。
[10] [1]乃至[9]いずれかに記載の液状樹脂組成物において、(A)エポキシ樹脂が、芳香族環にグリシジル構造またはグリシジルアミン構造が結合した構造を含むことを特徴とする液状樹脂組成物。
[11] [1]乃至[10]いずれかに記載の液状樹脂組成物を用いて、半導体素子と基板を封止して作製されたことを特徴とする半導体装置。
本発明は、フリップチップ方式の半導体装置において半導体素子と基板との間を封止するために用いる液状樹脂組成物に関するものであって、(A)エポキシ樹脂(B)エポキシ樹脂硬化剤(C)フィラーを含む液状樹脂組成物であって、(C)フィラーの含有量が、前記液状樹脂組成物全体の60重量%以上80重量%以下であり、前記液状樹脂組成物の110℃における、JIS R3257に準拠して測定される接触角(θ)が、30度以下であることを特徴とする。
具体的にはフリップチップ型半導体装置が挙げられる。このフリップチップ型半導体装置に関しては、半田電極が具備された半導体素子を基板に接続し、該半導体素子と該基板の間隙を封止する。この場合一般的に基板側の半田電極が接合する部位以外の領域は半田が流れないようにソルダーレジストが形成されている。
このような半導体装置には、フリップチップ方式の半導体装置、キャビティーダウン型BGA(Ball Grid Array)、POP(Package on Package)型BGA(Ball Grid Array)、TAB(Tape Automated Bonding)型BGA(Ball Grid Array)、CSP(Chip Scale Package)などが挙げられる。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.0重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)71重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.1重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。なお、(A)エポキシ樹脂とDBUとは予め室温で1時間攪拌混合したものを用いた。
DBUの含有量を減らし、全体の含有量を以下のようにした以外は、実施例1と同様に液状樹脂組成物を作製した。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.1重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)70.994重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.006重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。なお、(A)エポキシ樹脂とDBUとは予め室温で1時間攪拌混合したものを用いた。
DBUの含有量を増やし、全体の含有量を以下のようにした以外は、実施例1と同様に樹脂組成物を作製した
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)20.85重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)71重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.25重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。なお、(A)エポキシ樹脂とDBUとは予め室温で1時間攪拌混合したものを用いた。
(C)フィラーの含有量を増やし、全体の含有量を以下のようにした以外は、実施例1と同様に液状樹脂組成物を作製した。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)19.3重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.5重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)73.1重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.1重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。なお、(B)エポキシ樹脂硬化剤とDBUとは予め室温で1時間攪拌混合したものを用いた。
DBUの代わりに、DBU-フェノール塩(サンアプロ株式会社製 U-CAT SA1)を用いた以外は、実施例1と同様に液状樹脂組成物を作製した。なお、(A)エポキシ樹脂とDBU-フェノール塩とは予め室温で1時間攪拌混合したものを用いた。
DBUの変わりに、下記式(5)で表される化合物(E)のテトラ置換ホスホニウム化合物を用いた以外は、実施例1と同様に液状樹脂組成物を作製した。なお、(A)エポキシ樹脂と下記式(5)で表される化合物(E)のテトラ置換ホスホニウム化合物とは予め室温混合していない。
DBUの代わりに、下記式(6)で表される化合物(E)のホスホベタイン化合物を用いた以外は、実施例1と同様に液状樹脂組成物を作製した。なお、(A)エポキシ樹脂と下記式(6)で表される化合物(E)のホスホベタイン化合物とは予め室温混合していない。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)14.1重量%と、(B)エポキシ樹脂硬化剤として、酸無水物硬化剤(日立化成工業株式会社製 HN-2200R)14.4重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)71重量%と下記式(7)で表される化合物(E)のテトラ置換ホスホニウム化合物0.5重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。なお、(A)エポキシ樹脂と下記式(7)で表される化合物(E)のテトラ置換ホスホニウム化合物とは予め室温混合していない。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.1重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)70.9重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.1重量%とを3本ロールにて混練分散した後、真空脱泡して液状封止樹脂組成物を得た。なお、(A)エポキシ樹脂とDBUとは予め室温で4時間攪拌混合したものを用いた。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.1重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)70.9重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.1重量%とを3本ロールにて混練分散した後、真空脱泡して液状封止樹脂組成物を得た。なお、(A)エポキシ樹脂とDBUとは予め室温で12時間攪拌混合したものを用いた。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.1重量%と、(B)エポキシ樹脂硬化剤として、アミン硬化剤(日本化薬株式会社製 カヤハードAA)7.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)70.9重量%と、(D)ルイス塩基として1,8-ジアザビシクロ(5,4,0)ウンデセン-7(DBU)0.1重量%とを3本ロールにて混練分散した後、真空脱泡して液状封止樹脂組成物を得た。なお、(B)エポキシ樹脂硬化剤とDBUとは予め室温で12時間攪拌混合したものを用いた。
(D)ルイス塩基およびその塩、並びに(E)テトラ置換ホスホニウム化合物、ホスホベタイン化合物、ホスフィン化合物とキノン化合物との付加物、およびホスホニウム化合物とシラン化合物のいずれも用いず、全体の含有量を以下のようにした以外は、実施例1と同様に液状樹脂組成物を作製した。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)25.1重量%と、(B)エポキシ樹脂硬化剤として、アミン系硬化剤(日本化薬株式会社製 カヤハードAA)9.9重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)65重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。
(C)フィラーの含有量を増やし、全体の含有量を以下のようにした以外は、比較例1と同様に液状樹脂組成物を作製した。
(A)エポキシ樹脂として(DIC株式会社製 EXA-830LVP)21.5重量%と、(B)エポキシ樹脂硬化剤として、アミン系硬化剤(日本化薬株式会社製 カヤハードAA)8.5重量%と、(C)フィラーとして(株式会社アドマテックス製、アドマファインSO-E3、最大粒子径5μm、平均粒子径1μm)70重量%とを3本ロールにて混練分散した後、真空脱泡して液状樹脂組成物を得た。
得られた液状樹脂組成物について、以下の評価を行った。得られた結果を表1および2に示した。
18mm×18mmのガラス板(上)とガラス板(下)とを70±10μmの間隔が空くように張り合わせて、隙間のある平行平面を持つガラスセルを作製した。このガラスセルをホットプレートの上に置き、ガラス板(上)の上面温度が110±1℃になるよう温度調整しながら5分間静置した。その後、ガラスセルの一辺に、液状樹脂組成物を適量塗布し、18mm流れきる時間(流動時間)を測定した。各符号は、以下の通りである。
AA:流動時間が、100秒以上、150秒未満であったもの。
BB:流動時間が、150秒以上、250秒未満であったもの。
CC:流動時間が、250秒以上、300秒未満であったもの。
DD:流動時間が、300秒以上であったもの。
スライドグラス(松浪硝子工業株式会社製 S1111)に対する液状樹脂組成物の接触角(θ)を測定した。
接触角の測定は、協和界面化学株式会社製 CA-V型自動接触角計を用いて、110℃の測定雰囲気にてθ/2法(液適法)によりJIS R3257に準じて実施した。すなわち、接触角が小さいほど濡れ性がよいことを意味する。
実施例1~11および比較例1、2で得られた液状樹脂組成物を半田バンプで接合された回路基板と半導体チップとの隙間に流動、封止し半導体装置を作製し、樹脂充填試験、リフロー試験、温度サイクル試験を実施した。試験、評価に使用した半導体装置の構成部材は以下のとおりである。
接続用のフラックスにはTSF-6502(Kester製、ロジン系フラックス)を使用した。
液状樹脂組成物の充填試験としては、作製した半導体装置の硬化終了後、超音波探傷装置を用いて充填性を確認した。
良好 :隙間を液状樹脂組成物が完全に充填しているもの
未充填:隙間を液状樹脂組成物が完全に充填できなかったもの
リフロー試験の試験方法としては、上記の半導体装置をJEDECレベル3の吸湿処理(30℃相対湿度60%で168時間処理)を行った後、IRリフロー処理(ピーク温度260℃)を3回行い、超音波探傷装置にて半導体装置内部での液状樹脂組成物の剥離の有無を確認し、さらに光学顕微鏡を用いて半導体チップ側面部の液状樹脂組成物表面を観察し亀裂の有無を観測した。
温度サイクル試験としては、上記のリフロー試験を行った半導体装置に(-55℃/30分)と(125℃/30分)の冷熱サイクル処理を施し、250サイクル毎に超音波探傷装置にて半導体装置内部の半導体チップと液状樹脂組成物界面の剥離の有無を確認し、さらに光学顕微鏡を用いてチップ側面部の液状樹脂組成物表面を観察し、亀裂の有無を観測した。上記温度サイクル試験は最終的に1000サイクルまで実施した。
以上の結果を表1および2に詳細にまとめた。
実施例1~11の半導体装置は、問題なく作動した。
Claims (11)
- (A)エポキシ樹脂
(B)エポキシ樹脂硬化剤
(C)フィラー
を含む液状樹脂組成物であって、
(C)フィラーの含有量が、前記液状樹脂組成物全体の60重量%以上80重量%以下であり、
前記液状樹脂組成物の110℃における、JIS R3257に準拠して測定される接触角(θ)が、30度以下であることを特徴とする液状樹脂組成物。 - 請求項1記載の液状樹脂組成物において、
(D)ルイス塩基またはその塩、をさらに含むことを特徴とする液状樹脂組成物。 - 請求項2記載の液状樹脂組成物において、
(D)ルイス塩基またはその塩が、1,8-ジアザビシクロ(5.4.0)ウンデセン-7または1,5-ジアザビシクロ(4.3.0)ノネン-5、またはそれらの塩であることを特徴とする液状樹脂組成物。 - 請求項2または3記載の液状樹脂組成物において、
(D)ルイス塩基またはその塩の含有量が、前記液状樹脂組成物全体の0.005重量%以上0.3重量%以下であることを特徴とする液状樹脂組成物。 - 請求項1乃至4いずれかに記載の液状樹脂組成物において、
(E)テトラ置換ホスホニウム化合物、ホスホベタイン化合物、ホスフィン化合物とキノン化合物との付加物、およびホスホニウム化合物とシラン化合物との付加物から選ばれた少なくとも1種の化合物、をさらに含むことを特徴とする液状樹脂組成物。 - 請求項1乃至5いずれかに記載の液状樹脂組成物において、
(C)フィラーの最大粒子径が25μm以下、かつ平均粒子径が0.1μm以上10μm以下であることを特徴とする液状樹脂組成物。 - 請求項1乃至6いずれかに記載の液状樹脂組成物において、
(C)フィラーの含有量が、前記液状樹脂組成物全体の70重量%以上80重量%以下であることを特徴とする液状樹脂組成物。 - 請求項2乃至7いずれかに記載の液状樹脂組成物において、
(C)フィラーの含有量に対する(D)ルイス塩基またはその塩の含有量((D)/(C))が、0.00006以上0.005以下であることを特徴とする液状樹脂組成物。 - 請求項1乃至8いずれかに記載の液状樹脂組成物において、
(B)エポキシ樹脂硬化剤が、アミン硬化剤または酸無水物であることを特徴とする液状樹脂組成物。 - 請求項1乃至9いずれかに記載の液状樹脂組成物において、
(A)エポキシ樹脂が、芳香族環にグリシジル構造またはグリシジルアミン構造が結合した構造を含むことを特徴とする液状樹脂組成物。 - 請求項1乃至10いずれかに記載の液状樹脂組成物を用いて、半導体素子と基板を封止して作製されたことを特徴とする半導体装置。
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| US13/133,249 US20110241227A1 (en) | 2008-12-25 | 2009-12-17 | Liquid resin composition and semiconductor device |
| SG2011046083A SG172343A1 (en) | 2008-12-25 | 2009-12-17 | Liquid resin composition and semiconductor device |
| CA2748175A CA2748175A1 (en) | 2008-12-25 | 2009-12-17 | Liquid resin composition and semiconductor device |
| CN2009801514832A CN102257064A (zh) | 2008-12-25 | 2009-12-17 | 液体树脂组合物和半导体器件 |
| JP2010543819A JPWO2010073559A1 (ja) | 2008-12-25 | 2009-12-17 | 液状樹脂組成物および半導体装置 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012144355A1 (ja) * | 2011-04-22 | 2012-10-26 | 住友ベークライト株式会社 | 液状封止樹脂組成物、液状封止樹脂組成物を用いた半導体装置、および半導体装置の製造方法 |
| WO2012147874A1 (ja) * | 2011-04-28 | 2012-11-01 | 日立化成工業株式会社 | 電子部品用樹脂組成物及び電子部品装置 |
| JP2018188580A (ja) * | 2017-05-10 | 2018-11-29 | 信越化学工業株式会社 | 熱伝導性エポキシ樹脂封止用組成物 |
| WO2025187747A1 (ja) * | 2024-03-06 | 2025-09-12 | パナソニックIpマネジメント株式会社 | 液状樹脂組成物及び半導体装置 |
| WO2026034380A1 (ja) * | 2024-08-09 | 2026-02-12 | パナソニックIpマネジメント株式会社 | 液状樹脂組成物、半導体封止材料、アンダーフィル材及び半導体装置 |
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| US12454612B2 (en) * | 2017-05-31 | 2025-10-28 | Resonac Corporation | Liquid resin composition for compression molding and electronic component apparatus |
| PT3620481T (pt) * | 2017-05-31 | 2024-04-08 | Namics Corp | Composição de resina líquida para selagem e dispositivo de componentes eletrónicos |
| CA3144314A1 (en) * | 2019-09-02 | 2021-03-11 | Sika Technology Ag | Latent epoxy-amine composition for cipp application |
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- 2009-12-17 KR KR1020117017384A patent/KR20110110225A/ko not_active Withdrawn
- 2009-12-17 CN CN2009801514832A patent/CN102257064A/zh active Pending
- 2009-12-17 JP JP2010543819A patent/JPWO2010073559A1/ja not_active Withdrawn
- 2009-12-17 WO PCT/JP2009/006981 patent/WO2010073559A1/ja not_active Ceased
- 2009-12-17 SG SG2011046083A patent/SG172343A1/en unknown
- 2009-12-17 US US13/133,249 patent/US20110241227A1/en not_active Abandoned
- 2009-12-25 TW TW098144943A patent/TW201033281A/zh unknown
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| JP2007169602A (ja) * | 2005-11-01 | 2007-07-05 | Shin Etsu Chem Co Ltd | 液状エポキシ樹脂組成物 |
| JP2008111106A (ja) * | 2006-10-06 | 2008-05-15 | Hitachi Chem Co Ltd | 電子部品封止用液状樹脂組成物及びこれを用いた電子部品装置 |
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| WO2012144355A1 (ja) * | 2011-04-22 | 2012-10-26 | 住友ベークライト株式会社 | 液状封止樹脂組成物、液状封止樹脂組成物を用いた半導体装置、および半導体装置の製造方法 |
| WO2012147874A1 (ja) * | 2011-04-28 | 2012-11-01 | 日立化成工業株式会社 | 電子部品用樹脂組成物及び電子部品装置 |
| JPWO2012147874A1 (ja) * | 2011-04-28 | 2014-07-28 | 日立化成株式会社 | 電子部品用樹脂組成物及び電子部品装置 |
| JP2014237837A (ja) * | 2011-04-28 | 2014-12-18 | 日立化成株式会社 | 電子部品用樹脂組成物及び電子部品装置 |
| JP2018188580A (ja) * | 2017-05-10 | 2018-11-29 | 信越化学工業株式会社 | 熱伝導性エポキシ樹脂封止用組成物 |
| WO2025187747A1 (ja) * | 2024-03-06 | 2025-09-12 | パナソニックIpマネジメント株式会社 | 液状樹脂組成物及び半導体装置 |
| WO2026034380A1 (ja) * | 2024-08-09 | 2026-02-12 | パナソニックIpマネジメント株式会社 | 液状樹脂組成物、半導体封止材料、アンダーフィル材及び半導体装置 |
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| US20110241227A1 (en) | 2011-10-06 |
| SG172343A1 (en) | 2011-07-28 |
| CA2748175A1 (en) | 2010-07-01 |
| KR20110110225A (ko) | 2011-10-06 |
| TW201033281A (en) | 2010-09-16 |
| JPWO2010073559A1 (ja) | 2012-06-07 |
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