WO2015129377A1 - 導電性接着剤および半導体装置 - Google Patents
導電性接着剤および半導体装置 Download PDFInfo
- Publication number
- WO2015129377A1 WO2015129377A1 PCT/JP2015/052397 JP2015052397W WO2015129377A1 WO 2015129377 A1 WO2015129377 A1 WO 2015129377A1 JP 2015052397 W JP2015052397 W JP 2015052397W WO 2015129377 A1 WO2015129377 A1 WO 2015129377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductive adhesive
- morpholine
- component
- mass
- conductive
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0831—Gold
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/357—Six-membered rings
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
Definitions
- the present invention relates to a conductive adhesive, and more particularly to a conductive adhesive that can connect a metal that easily forms an oxide film with low resistance.
- a semiconductor device in which an electrode portion of a semiconductor element and a conductive portion of a substrate are bonded is very widely used, and a conductive adhesive or solder is used for bonding between the electrode portion of the semiconductor element and the conductive portion of the substrate. Paste is used.
- the conductive adhesive has the advantage that it can be bonded at a lower temperature than the soldering, but since the bulk resistance is higher than that of the solder, lowering the resistance of the conductive adhesive has been studied.
- connection resistance value is reduced due to corrosion of this metal.
- the increase in the connection resistance value cannot be prevented by increasing the filling of the conductive filler in the conductive adhesive.
- a conductive adhesive is used when joining a metal that easily forms an oxide film with a conductive adhesive. It is known to add 8-hydroxyquinoline as a corrosion inhibitor in the agent.
- Known techniques for adding 8-hydroxyquinoline as a corrosion inhibitor in a conductive adhesive include: (a) a polymer resin, (b) a conductive filler, (c) an anticorrosive, and (d) reactive if desired. Or a composition for use in a microelectronic device comprising a non-reactive diluent, (e) optionally an inert filler, and (f) optionally an adhesion promoter, wherein the anticorrosive is 8-hydroxyquinoline.
- A a polymer resin, (b) a conductive filler, (c) a reactive or non-reactive diluent, as desired, and (d) an optional inert filler.
- compositions for a microelectronic device optionally containing an adhesion promoter, improved by adding an oxygen scavenger or corrosion inhibitor or both
- a composition for use in a microelectronic device comprising: (a) a thermosetting resin system comprising at least one epoxy resin and an aliphatic amine admixture; (b) a conductive filler; One of the group consisting of :) corrosion inhibitors, (d) curing agents or catalysts, (e) optionally organic solvents, and (f) optionally adhesion promoters, phenolic resins, flow additives and rheology modifiers.
- Patent Document 3 in which the ratio of the epoxide functional group in the epoxy resin to the amine functional group in the aliphatic amine is greater than 1.
- JP 2002-348486 A JP 2000-273317 A Special table 2006-524286
- the conductive adhesive to which 8-hydroxyquinoline is added as a corrosion inhibitor as described above is not sufficient in reducing the connection resistance value, and further reduction in the connection resistance value is desired.
- the present inventors have obtained a connection resistance value lower than that obtained with 8-hydroxyquinoline by adding morpholines (a compound having a structure similar to morpholine and morpholine) as a corrosion inhibitor.
- morpholines a compound having a structure similar to morpholine and morpholine
- the inventors have found that a conductive adhesive having a long pot life can be obtained by suppressing thickening during storage.
- the present invention relates to a conductive adhesive and a semiconductor device that have solved the above problems by having the following configuration.
- A epoxy resin
- B an amine-based curing agent and / or a phenol-based curing agent
- C a morpholine reducing agent
- a conductive adhesive comprising (D) a conductive filler and (E) a silane coupling agent.
- the component (C) is morpholine, 2,6-dimethylmorpholine, 4- (3-hydroxypropyl) morpholine, 4-methylmorpholine, 4- (4-aminophenyl) morpholine, thiomorpholine and 1,1-
- the component (D) is at least one powder selected from the group consisting of silver, nickel, copper, gold, palladium, platinum, tin, aluminum, silver-coated copper, silver-coated aluminum, and silver-coated resin.
- the conductive adhesive according to any one of [1] to [3] above. [5] including a substrate having a conductive portion and a semiconductor element having an electrode portion, A semiconductor device in which a conductive part of a substrate and an electrode part of a semiconductor element are bonded with a cured product of the conductive adhesive according to any one of [1] to [4]. [6] The semiconductor device according to [5], wherein the conductive portion of the substrate is nickel, aluminum, or copper.
- the conductive adhesive of the present invention is (A) epoxy resin, (B) an amine-based curing agent and / or a phenol-based curing agent, (C) a morpholine reducing agent, It contains (D) a conductive filler and (E) a silane coupling agent.
- Component (A) imparts adhesiveness and curability to the conductive adhesive, and imparts durability and heat resistance to the conductive adhesive after curing.
- component (A) liquid bisphenol A type epoxy resin, liquid bisphenol F type epoxy resin, liquid naphthalene type epoxy resin, liquid aminophenol type epoxy resin, liquid hydrogenated bisphenol type epoxy resin, liquid alicyclic epoxy resin, liquid Examples include alcohol ether type epoxy resin, liquid cycloaliphatic type epoxy resin, liquid fluorene type epoxy resin, liquid siloxane type epoxy resin, etc., liquid bisphenol A type epoxy resin, liquid bisphenol F type epoxy resin, liquid naphthalene type epoxy resin From the viewpoints of adhesiveness, curability, durability, and heat resistance.
- the epoxy equivalent is preferably 80 to 250 g / eq from the viewpoint of viscosity adjustment.
- Commercially available products include Nippon Steel & Sumikin Chemical's bisphenol F type epoxy resin (product name: YDF8170), DIC's bisphenol A type epoxy resin (product name: EXA-850CRP), Nippon Steel & Sumikin Chemical Co., Ltd.
- a component may be individual or may use 2 or more types together.
- the amine-based curing agent as the component (B) is not particularly limited as long as it has at least one active hydrogen capable of addition reaction with an epoxy group in the molecule.
- amine curing agents include aliphatic amine compounds such as diethylenetriamine, triethylenetetramine, n-propylamine, 2-hydroxyethylaminopropylamine, cyclohexylamine, and 4,4′-diamino-dicyclohexylmethane; Aromatic amine compounds such as diaminodiphenylmethane and 2-methylaniline; imidazole compounds such as imidazole, 2-methylimidazole, 2-ethylimidazole and 2-isopropylimidazole; imidazoline compounds such as imidazoline, 2-methylimidazoline and 2-ethylimidazoline Etc.
- the amine curing agent of component (B) is an imidazole compound
- it is preferably microencapsulated.
- an imidazole compound curing accelerator microencapsulated with a urethane resin or the like is used.
- a microencapsulated imidazole compound curing accelerator dispersed in a liquid epoxy resin such as liquid bisphenol A type and masterbatch is advantageous in terms of workability, curing speed, and storage stability. To more preferable.
- Examples of the imidazole curing agent contained in the microencapsulated imidazole compound curing agent include 2-methylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2- Phenyl-4-methylimidazole, 2,4-diamino-6- [2′-methylimidazolyl- (1 ′)] ethyl-s-triazine, 2-phenyl-4,5-dihydroxymethylimidazole, 2-phenyl-4 -Methyl-5-hydroxymethylimidazole, 2,3-dihydro-1H-pyrrolo [1,2-a] benzimidazole and the like, and 2,4-diamino-6- [2′-methylimidazolyl- ( 1 ′)] ethyl-s-triazine, 2,4-diamino-6- [2′-unde Louis imi
- Component phenolic curing agent includes phenol novolac, cresol novolac and the like, and phenol novolac is preferable. Also, the phenolic curing agent has a lower reactivity than the amine curing agent, so that the pot life can be lengthened. When it is desired to further increase the pot life of the conductive adhesive, the pot life of the conductive adhesive can be extended by using a phenolic curing agent in combination.
- component (B) Commercially available products of component (B) include Nippon Kayaku's amine curing agent (product name: Kayahard AA), Nippon Finechem's adipic acid dihydrazide (product name: ADH), Asahi Kasei E-materials microencapsulated imidazole compound curing agent (Product names: NovaCure HX3941HP, NovaCure HX3088, NovaCure HX3722), Ajinomoto Fine Techno's amine adduct type curing agent (Product name: PN-40J), Meiwa Kasei phenol curing agent (Product names: MEH8000, MEH8005), etc.
- the component B) is not limited to these product names.
- a component may be individual or may use 2 or more types together.
- the morpholines used for the reducing agent of the component mean morpholine and compounds having a morpholine structure.
- component can reduce the connection resistance value of the conductive adhesive after hardening.
- Component (C) includes morpholine, 2,6-dimethylmorpholine, 4- (3-hydroxypropyl) morpholine, 4-methylmorpholine, 4- (4-aminophenyl) morpholine, thiomorpholine, 1,1-dioxo Examples include thiomorpholine.
- the component (C) is preferably at least one selected from the group consisting of morpholines represented by the following chemical formulas (1) to (7) because the connection resistance value can be lowered.
- the component (C) may be, for example, a reagent commercially available from Wako Pure Chemical Industries, Nippon Emulsifier, Tokyo Chemical Industry.
- a component may be individual or may use 2 or more types together.
- 8-hydroxyquinoline used in the known technique has a reducing power that is weaker than that of morpholines, so a large amount (for example, 2 of the conductive adhesive) is required to reduce the connection resistance value of the conductive adhesive.
- a large amount of 8-hydroxyquinoline is contained in the conductive adhesive, there is a problem that the adhesive strength of the conductive adhesive is reduced.
- (C) morpholine reducing agent has a strong reducing power at high temperature, and therefore can reduce the connection resistance value of the conductive adhesive in a small amount without reducing the adhesive strength of the conductive adhesive, and Since it does not react at room temperature, the conductive adhesive does not thicken, that is, it has a remarkable advantage that the pot life can be extended.
- the conductive filler of component (D) is not particularly limited, and as component (D), silver, nickel, copper, gold, palladium, platinum, carbon black, bismuth, tin, bismuth-tin alloy, carbon Examples include fibers, graphite, aluminum, indium tin oxide, silver-coated copper, silver-coated aluminum, metal-coated glass spheres, silver-coated fibers, silver-coated resins, antimony-doped tin oxide, and mixtures thereof.
- the component (D) is at least one powder selected from the group consisting of silver, nickel, copper, tin, aluminum, silver-coated copper, silver-coated aluminum, and silver-coated resin
- the connection resistance value is known in a known technique.
- the effect of the present invention is easily exhibited, which is preferable.
- materials used for the silver-coated fiber and the silver-coated resin include acrylic resin, polyester, and styrene resin.
- the component (C) also acts as a corrosion inhibitor for the conductive part of the substrate.
- the average particle size of the component (D) is more preferably 0.1 to 50 ⁇ m from the viewpoint of workability and low viscosity.
- the average particle diameter of the component (D) is a volume-based median diameter measured by a laser diffraction method.
- the shape of the component (D) is more preferably a flake shape from the viewpoint of reducing resistance.
- Commercially available products include DOWA electronics silver powder (product name: FA618) and Mitsui Mining & Smelting silver powder (product name: SL02).
- a component may be individual or may use 2 or more types together.
- the coupling agent of the component improves the adhesion of the conductive adhesive.
- component (E) 3-glycidoxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyltrimethoxysilane, 3-acrylic Examples include loxypropyltrimethoxysilane, 3-ureidopropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, bis (triethoxysilylpropyl) tetrasulfide, and 3-isocyanatopropyltriethoxysilane.
- Trimethoxysilane and 3-aminopropyltrimethoxysilane are preferable from the viewpoint of adhesiveness to the conductive adhesive.
- Examples of commercially available products include silane coupling agents manufactured by Shin-Etsu Chemical Co., Ltd. (product names: KBM403, KBE903, KBE9103), silane coupling agents manufactured by Nimi Shoji (product name: S510), and the component (E) includes these product names. It is not limited to. (E) A component may be individual or may use 2 or more types together.
- the component (A) is preferably 6 to 24 parts by mass and more preferably 8 to 21 parts by mass with respect to 100 parts by mass in total of the components (A) to (E).
- the component (B) is preferably 1 to 10 parts by mass with respect to a total of 100 parts by mass of the components (A) to (E) from the viewpoint of good reactivity and reliability, and 1 to 5 parts by mass. More preferably.
- the component (C) is preferably 0.05 to 1.00 parts by mass, and 0.1 to 0.8 parts by mass with respect to 100 parts by mass in total of the components (A) to (E). More preferred.
- the connection resistance value is likely to increase. The pot life of the agent tends to be shortened.
- the component (C) is preferably 0.05 to 1.00 parts by mass with respect to the total of 100 parts by mass of the components (A) to (E) in the case of a cured product of the conductive adhesive.
- the amount is more preferably 0.1 to 0.8 parts by mass.
- the mass loss upon curing is less than 1%, which is preferable in the cured product.
- the content of the component (C) is the same as the content in the components (A) to (E) before curing.
- the quantitative analysis of the component (C) is performed by an ion chromatograph-mass spectrometer.
- the mass reduction upon curing of the conductive adhesive is, for example, 3 to 5% by mass.
- the component (D) is preferably 70 to 90 parts by mass, and 74 to 86 parts by mass with respect to 100 parts by mass in total of the components (A) to (E) from the viewpoint of the electrical resistance value of the conductive adhesive itself. Part is more preferable.
- the component (D) is preferably 70 to 90 parts by mass, and 74 to 86 parts by mass with respect to 100 parts by mass in total of the components (A) to (E) even in the case of a cured product of the conductive adhesive. Part is more preferable.
- the quantitative analysis of the component (D) is performed by mass spectrometry.
- the component (E) is preferably contained in an amount of 0.05 to 5 parts by mass, more preferably 0.1 to 2 parts by mass with respect to a total of 100 parts by mass of the components (A) to (E). Adhesiveness improves that it is 0.05 mass part or more, and foaming of a conductive adhesive is suppressed as it is 5 mass parts or less.
- the conductive adhesive of the present invention can further contain a boric acid compound from the viewpoint of improving pot life.
- the boric acid compound is preferably 0.03 to 0.06 parts by mass with respect to 100 parts by mass in total of the components (A) to (E). If the amount is less than 0.03 parts by mass, the pot life may be shortened. If the amount is more than 0.06 parts by mass, the curability of the conductive adhesive may be deteriorated.
- Examples of commercially available boric acid compounds include boric acid (product name: HBO, active ingredient: 99.5% or more) manufactured by Wako Pure Chemical Industries, Ltd. and triisopropyl borate (product name: TIPB).
- a leveling agent, a colorant, an ion trapping agent, an antifoaming agent, a flame retardant, other additives, and the like are further blended as necessary without departing from the object of the present invention. be able to.
- the conductive adhesive of the present invention is obtained, for example, by stirring, melting, mixing, and dispersing the components (A) to (E) and other additives simultaneously or separately, with heat treatment as necessary.
- the mixing, stirring, dispersing and the like devices are not particularly limited, and a raikai machine equipped with a stirring and heating device, a three-roll mill, a ball mill, a planetary mixer, a bead mill and the like can be used. . Moreover, you may use combining these apparatuses suitably.
- the conductive adhesive of the present invention preferably has a viscosity at a temperature of 25 ° C. of 10,000 to 30,000 mPa ⁇ s from the viewpoint of injectability.
- the viscosity is measured with an RV viscometer manufactured by Brookfield.
- the conductive adhesive of the present invention is formed and applied to a desired position of an electronic component such as a conductive part of a substrate or an electrode part of a semiconductor element by a dispenser, printing or the like.
- the curing of the conductive adhesive of the present invention is preferably 80 to 300 ° C.
- the conductive adhesive of the present invention is suitable as an adhesive for electronic parts such as an electrode part of a semiconductor element and a conductive part of a substrate.
- the semiconductor device of the present invention includes a substrate having a conductive portion and a semiconductor element having an electrode portion, The conductive part of the substrate and the electrode part of the semiconductor element are joined by the cured product of the conductive adhesive.
- the conductive portion of the substrate is nickel, aluminum or copper from the viewpoint of easily exerting the effect of the conductive adhesive. This is because nickel, aluminum, or copper is likely to cause an increase in connection resistance value due to corrosion of the metal in known techniques.
- the semiconductor device of the present invention has a small connection resistance value between the electrode portion of the semiconductor element and the conductive portion of the substrate, and is highly reliable.
- (C) a morpholine reducing agent was added to the obtained dispersion, and the mixture was stirred with a rotating and rotating stirrer.
- morpholine is usually in a liquid state, there is no need for roll dispersion.
- solid morpholines for example, 4- (3-hydroxypropyl) morpholine, 4- (4-aminophenyl) morpholine, 1,1-dioxothiomorpholine
- a microencapsulated curing agent manufactured by Asahi Kasei E-Materials, which is a mixture of the component (A) and the component (B), was added, and the mixture was similarly stirred with a rotation and revolution type stirrer. Finally, the viscosity is adjusted using the above-mentioned solvent naphtha so that the viscosity becomes 10,000 to 30,000 mPa ⁇ s, and the foam in the dispersed product is completely removed while stirring with a defoaming machine. Obtained.
- Comparative Example 1 component (C) was not used.
- 8-quinolinol was used in place of the component (C)
- Comparative Example 3 adipic acid was used in place of the component (C).
- an acid anhydride curing agent was used instead of the component (B).
- connection resistance value A conductive adhesive was printed on a Ni-plated Cu lead frame (thickness: 200 ⁇ m) to mount a 3216 size AgPd end face electrode. The temperature was raised from room temperature to 80 ° C. in 60 minutes, held in an oven at 80 ° C. for 60 minutes to cure, and then the resistance value between the lead frame and the electrode was measured by the four-terminal method to determine the connection resistance value. Obtained. Tables 1 and 2 show the results.
- ⁇ Pot life> The viscosity of the obtained conductive adhesive was measured at 10 rpm using a Brookfield RVT viscometer (using a # 14 spindle). After measuring the initial viscosity, it was allowed to stand in an environment of 25 ° C./50% RH for 24 hours, the viscosity was measured again, and the rate of increase in viscosity was calculated.
- Viscosity increase rate [(viscosity after 24 hours) ⁇ (initial viscosity)] / (initial viscosity) ⁇ 100 Calculated with When the viscosity increase rate was less than 5%, “ ⁇ ”, when 5-15%, “ ⁇ ”, when 15-20%, “ ⁇ ”, and when 20% or more, “ ⁇ ”. Tables 1 and 2 show the measurement results.
- connection resistance value was as low as 3000 m ⁇ or less, the pot life was not bad, and the overall evaluation was good.
- the connection resistance value was low, the pot life was very good, and the overall evaluation was also very good.
- Comparative Example 1 in which the component (C) was not used, the connection resistance value was very high and the overall evaluation was poor.
- Comparative Example 2 in which 8-quinolinol was used instead of the component (C), the connection resistance value was high and the overall evaluation was poor.
- the conductive adhesive of the present invention has a long pot life and can obtain a low connection resistance value after curing.
- the present invention is a conductive adhesive having a low pot resistance by adding morpholines as a corrosion inhibitor and having a long pot life due to suppression of thickening during storage. This is very useful for adhesion between the conductive portion and the electrode portion of the semiconductor element.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Conductive Materials (AREA)
Abstract
Description
〔1〕(A)エポキシ樹脂、
(B)アミン系硬化剤および/またはフェノール系硬化剤、
(C)モルホリン類還元剤、
(D)導電性充填剤、ならびに
(E)シランカップリング剤
を含有することを特徴とする、導電性接着剤。
〔2〕(C)成分が、モルホリン、2,6-ジメチルモルホリン、4-(3-ヒドロキシプロピル)モルホリン、4-メチルモルホリン、4-(4-アミノフェニル)モルホリン、チオモルホリンおよび1,1-ジオキソチオモルホリンからなる群より選択される少なくとも1種である、上記〔1〕記載の導電性接着剤。
〔3〕(C)成分が、(A)~(E)成分の合計100質量部に対して、0.05~1.00質量部である、上記〔1〕または〔2〕記載の導電性接着剤。
〔4〕(D)成分が、銀、ニッケル、銅、金、パラジウム、白金、錫、アルミニウム、銀被覆銅、銀被覆アルミニウムおよび銀被覆樹脂からなる群から選択される少なくとも1種の粉末である、上記〔1〕~〔3〕のいずれか記載の導電性接着剤。
〔5〕導電部を有する基板と、電極部を有する半導体素子とを含み、
上記〔1〕~〔4〕のいずれか記載の導電性接着剤の硬化物で、基板の導電部と半導体素子の電極部とが接着された、半導体装置。
〔6〕基板の導電部がニッケル、アルミニウムまたは銅である、上記〔5〕記載の半導体装置。
(A)エポキシ樹脂、
(B)アミン系硬化剤および/またはフェノール系硬化剤、
(C)モルホリン類還元剤、
(D)導電性充填剤、ならびに
(E)シランカップリング剤
を含有することを特徴とする。
化学式(1)で表されるモルホリン:
本発明の半導体装置は、導電部を有する基板と、電極部を有する半導体素子とを含み、
上記導電性接着剤の硬化物で、基板の導電部と半導体素子の電極部とが接合される。
表1に示す割合で、(A)成分のDIC製液状エポキシ樹脂(品名:EXA835LV)と、(E)成分の日美商事製シランカップリング剤(品名:S510)と、(D)成分の銀粉末と、溶剤の丸善石油化学工業製ソルベントナフサ(SW1800):3.00質量部(表1に記載せず)と、ポットライフ向上のためのホウ酸化合物(和光純薬製、品名:HBO):0.04質量部(表1に記載せず)とを、容器に計量し、3本ロールミルにて分散させた。
〈接続抵抗値の測定〉
NiめっきをしたCuリードフレーム(厚み:200μm)上に、導電性接着剤を印刷し、3216サイズのAgPd端面電極をマウントさせた。室温から80℃まで60分で昇温し、80℃のオーブン中に60分間保持して硬化させた後、リードフレームと電極との間の抵抗値を4端子法で測定し、接続抵抗値を得た。表1~表2に結果を示す。
得られた導電性接着剤の粘度を、ブルックフィールド社製RVT粘度計(14号スピンドルを使用)を用い、10rpmでの値を測定した。初期粘度を測定した後、25℃/50%RH環境下で24時間放置し、再度粘度を測定し、粘度増加率を算出した。ここで、粘度増加率は、下記式:
粘度増加率=〔(24時間後の粘度)-(初期粘度)〕/(初期粘度)×100
で算出した。粘度増加率が、5%未満のときを「◎」、5~15%のときを「○」、15~20%のときを「△」、20%以上のときを「×」とした。表1~表2に、測定結果を示す。
総合評価を行った。接続抵抗値が3000mΩ以下であり、かつポットライフが◎または○のときに、総合評価を「◎」、接続抵抗値が3000mΩ以下であり、かつポットライフが△のときに、総合評価を「○」、接続抵抗値が3000mΩ以下であり、かつポットライフが×のときに、総合評価を「△」、接続抵抗値が3000mΩより高いときに、総合評価を「×」とした。表1~表2に、測定結果を示す。
Claims (6)
- (A)エポキシ樹脂、
(B)アミン系硬化剤および/またはフェノール系硬化剤、
(C)モルホリン類還元剤、
(D)導電性充填剤、ならびに
(E)シランカップリング剤
を含有することを特徴とする、導電性接着剤。 - (C)成分が、モルホリン、2,6-ジメチルモルホリン、4-(3-ヒドロキシプロピル)モルホリン、4-メチルモルホリン、4-(4-アミノフェニル)モルホリン、チオモルホリンおよび1,1-ジオキソチオモルホリンからなる群より選択される少なくとも1種である、請求項1記載の導電性接着剤。
- (C)成分が、(A)~(E)成分の合計100質量部に対して、0.05~1.00質量部である、請求項1または2記載の導電性接着剤。
- (D)成分が、銀、ニッケル、銅、金、パラジウム、白金、錫、アルミニウム、銀被覆銅、銀被覆アルミニウムおよび銀被覆樹脂からなる群から選択される少なくとも1種の粉末である、請求項1~3のいずれか1項記載の導電性接着剤。
- 導電部を有する基板と、電極部を有する半導体素子とを含み、
請求項1~4のいずれか1項記載の導電性接着剤の硬化物で、基板の導電部と半導体素子の電極部とが接着された、半導体装置。 - 基板の導電部がニッケル、アルミニウムまたは銅である、請求項5記載の半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167020572A KR20160125359A (ko) | 2014-02-25 | 2015-01-28 | 도전성 접착제 및 반도체 장치 |
JP2016505115A JP6549555B2 (ja) | 2014-02-25 | 2015-01-28 | 導電性接着剤および半導体装置 |
CN201580004183.7A CN105899635B (zh) | 2014-02-25 | 2015-01-28 | 导电性粘接剂和半导体装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014034704 | 2014-02-25 | ||
JP2014-034704 | 2014-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015129377A1 true WO2015129377A1 (ja) | 2015-09-03 |
Family
ID=54008703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/052397 WO2015129377A1 (ja) | 2014-02-25 | 2015-01-28 | 導電性接着剤および半導体装置 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6549555B2 (ja) |
KR (1) | KR20160125359A (ja) |
CN (1) | CN105899635B (ja) |
TW (1) | TWI621685B (ja) |
WO (1) | WO2015129377A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020500228A (ja) * | 2016-10-14 | 2020-01-09 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | 部材を接続するための半製品 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7390236B2 (ja) * | 2020-03-31 | 2023-12-01 | 京セラ株式会社 | 異方導電性樹脂組成物、及びマイクロledディスプレイ装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61215619A (ja) * | 1985-03-22 | 1986-09-25 | Toshiba Corp | エポキシ樹脂組成物 |
JPH07242648A (ja) * | 1994-01-18 | 1995-09-19 | Ciba Geigy Ag | 腐蝕抑制剤としての、モルホリン誘導体のケト酸との錯塩 |
JP2006524286A (ja) * | 2003-02-28 | 2006-10-26 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | 電気的安定性及び耐衝撃性の電子デバイス用導電性接着剤組成物 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007308678A (ja) * | 2005-11-02 | 2007-11-29 | Shin Etsu Chem Co Ltd | 液状エポキシ樹脂組成物 |
-
2015
- 2015-01-28 WO PCT/JP2015/052397 patent/WO2015129377A1/ja active Application Filing
- 2015-01-28 JP JP2016505115A patent/JP6549555B2/ja active Active
- 2015-01-28 KR KR1020167020572A patent/KR20160125359A/ko not_active Application Discontinuation
- 2015-01-28 CN CN201580004183.7A patent/CN105899635B/zh active Active
- 2015-02-06 TW TW104104035A patent/TWI621685B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61215619A (ja) * | 1985-03-22 | 1986-09-25 | Toshiba Corp | エポキシ樹脂組成物 |
JPH07242648A (ja) * | 1994-01-18 | 1995-09-19 | Ciba Geigy Ag | 腐蝕抑制剤としての、モルホリン誘導体のケト酸との錯塩 |
JP2006524286A (ja) * | 2003-02-28 | 2006-10-26 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | 電気的安定性及び耐衝撃性の電子デバイス用導電性接着剤組成物 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020500228A (ja) * | 2016-10-14 | 2020-01-09 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | 部材を接続するための半製品 |
Also Published As
Publication number | Publication date |
---|---|
TWI621685B (zh) | 2018-04-21 |
CN105899635A (zh) | 2016-08-24 |
TW201538676A (zh) | 2015-10-16 |
JP6549555B2 (ja) | 2019-07-24 |
JPWO2015129377A1 (ja) | 2017-03-30 |
CN105899635B (zh) | 2019-11-22 |
KR20160125359A (ko) | 2016-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6190653B2 (ja) | 導電性樹脂組成物および半導体装置 | |
JP5662104B2 (ja) | 導電性樹脂組成物およびそれを用いた半導体装置 | |
JP5293292B2 (ja) | 導電性接着ペースト及び電子部品搭載基板 | |
WO2013150907A1 (ja) | 導電性組成物 | |
WO2012160722A1 (ja) | はんだペースト用フラックスおよびはんだペースト | |
JP6013906B2 (ja) | 液状エポキシ樹脂組成物 | |
JP6576736B2 (ja) | 導電性接着剤および半導体装置 | |
TWI801488B (zh) | 樹脂組成物及其硬化物、電子零件用接著劑、半導體裝置,以及電子零件 | |
JP6549555B2 (ja) | 導電性接着剤および半導体装置 | |
JP2007294712A (ja) | ダイボンディングペーストおよびそれを用いた半導体装置 | |
TW201127864A (en) | Semiconductor-sealing epoxy resin composition and semiconductor device | |
JP6383183B2 (ja) | 導電性接着剤およびそれを用いた電子部品 | |
JP2008174577A (ja) | ダイボンディングペーストおよびそれを用いた半導体装置 | |
JP2016117869A (ja) | 半導体接着用樹脂組成物及び半導体装置 | |
JP3923687B2 (ja) | 電子部品実装用接合剤およびこれを用いた電子部品の実装方法 | |
JP6257356B2 (ja) | 導電性接着剤、半導体装置および導電性接着剤の製造方法 | |
JP6071612B2 (ja) | 液状樹脂組成物、フリップチップ実装体およびその製造方法 | |
JP2019054105A (ja) | 電極の接続方法および電子基板の製造方法 | |
JPWO2016052664A1 (ja) | 樹脂組成物 | |
JP2005317491A (ja) | 導電ペーストおよびそれを用いた電子部品搭載基板 | |
WO2016059980A1 (ja) | 液状エポキシ樹脂組成物 | |
JP2010050017A (ja) | 耐光性導電ペースト及び素子接続方法 | |
WO2013065433A1 (ja) | 樹脂組成物 | |
JP5027598B2 (ja) | 接着剤組成物およびそれを用いた半導体装置 | |
TWI512033B (zh) | 液狀樹脂組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15755337 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016505115 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20167020572 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15755337 Country of ref document: EP Kind code of ref document: A1 |