WO2011096687A2 - Composition adhésive électroconductrice pour connexions de circuits, et matériau de connexion de circuits, structure de connexion de circuit et procédé de production de structure de connexion de circuit - Google Patents

Composition adhésive électroconductrice pour connexions de circuits, et matériau de connexion de circuits, structure de connexion de circuit et procédé de production de structure de connexion de circuit Download PDF

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Publication number
WO2011096687A2
WO2011096687A2 PCT/KR2011/000651 KR2011000651W WO2011096687A2 WO 2011096687 A2 WO2011096687 A2 WO 2011096687A2 KR 2011000651 W KR2011000651 W KR 2011000651W WO 2011096687 A2 WO2011096687 A2 WO 2011096687A2
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WIPO (PCT)
Prior art keywords
circuit
organometallic compound
adhesive composition
conductive adhesive
circuit connection
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PCT/KR2011/000651
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English (en)
Korean (ko)
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WO2011096687A3 (fr
Inventor
황진상
김주열
구대영
하자영
Original Assignee
주식회사 이그잭스
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Priority claimed from KR1020100135663A external-priority patent/KR101260440B1/ko
Application filed by 주식회사 이그잭스 filed Critical 주식회사 이그잭스
Publication of WO2011096687A2 publication Critical patent/WO2011096687A2/fr
Publication of WO2011096687A3 publication Critical patent/WO2011096687A3/fr

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    • 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
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives

Definitions

  • the present invention relates to a conductive adhesive composition for anisotropic circuit connection, a circuit connection material, a circuit connection structure, and a circuit connection structure for electrically connecting circuit electrodes facing each other.
  • electrically conductive adhesives are used in the display device and the semiconductor device for the purpose of electrically coupling the respective members of the device.
  • This electrically conductive adhesive uses about 3 to 20 micrometers of conductive particles for the electrical connection of each member.
  • the pitch between electrodes becomes smaller and the size of the electrodes becomes smaller. Accordingly, the size of the conductive particles must be made small and the content of the conductive particles must also be increased for reliable electrical connection.
  • Japanese Patent Laid-Open No. 62-40183 and US Pat. No. 6,632,532 disclose a method of using insulating conductive particles coated with an organic material on the surface of the conductive particles.
  • the use of insulating conductive particles causes higher unit cost than the case of using ordinary conductive particles.
  • the organic insulating film In the low temperature and low pressure circuit connection process, the organic insulating film is not sufficiently melted, so that the connection resistance by the remaining insulating film tends to be large.
  • the circuit connection process of high temperature and high pressure the organic insulating film is easily melted and changes to a state similar to that of ordinary conductive particles, which may cause a short circuit between circuit patterns.
  • Korean Patent Registration No. 10-0793078 and Korean Patent Publication No. 10-2010-0007690 disclose a technology in which low melting solder metal is applied in place of conductive particles.
  • the technology of applying the low melting point solder metal when the heating process is performed at the melting point or higher of the solder metal, the solder metal is melted and formed on the circuit due to wetting, and the members are electrically connected.
  • the technique using the low melting point solder metal has the advantage that the solder metal is selectively concentrated between the circuits between electrodes to be connected, and thus the connection stability is excellent and the short circuit problem between adjacent circuits is considerably reduced.
  • heating is required for a sufficient time above the melting temperature of the low melting point solder metal so that the solder metal is sufficiently wetted on the circuit. Accordingly, there is a problem in that it is not applicable to the recent low temperature and fast curing process and does not meet the current technical requirements.
  • the object of the present invention is that the conductive metal can be selectively concentrated between the circuit electrodes for electrical connection to be connected, so that the conductive passages are uniformly formed, and the insulating properties between the other electrodes are excellent, so that the electrodes are extremely fine pitch. It is an object of the present invention to provide an anisotropic conductive adhesive composition for a circuit connection, a circuit connection material circuit connection structure, and a circuit connection structure that can be usefully used as a conductive adhesive as well as applicable to low temperature and fast curing processes.
  • thermoplastic resin (b) a thermoplastic resin
  • the organometallic compound may be decomposed to generate metal atoms, which are conductive components, by applying at least one energy selected from temperature, wavelength, and frequency.
  • the organometallic compound may be decomposed at 70 to 300 ° C. to generate metal atoms which are conductive components.
  • the organometallic compound may decompose when irradiated with a wavelength of 150 to 700 nm to generate a metal atom that is a conductive component.
  • the organometallic compound may be one in which a metal is combined with an organic material through hetero atoms C, P, S, O and N.
  • the organometallic compound may be a saturated or unsaturated aliphatic, aromatic or cycloaliphatic carboxylic acid metal having 0 to 12 carbon atoms having 1 to 3 carboxyl groups (except for carbon atoms of the carboxyl group).
  • the organometallic compound is a saturated or unsaturated aliphatic, aromatic or alicyclic carboxylic acid metal having 0 to 12 carbon atoms having 1 to 3 carboxyl groups (excluding carboxyl carbon atoms), and the metal is silver, copper, Preference is given to nickel, tin, zinc, gold, chromium, manganese, indium, palladium, titanium, molybdenum or platinum.
  • the organometallic compound may be included in the form of a capsule having a coating layer formed on its surface.
  • the coating layer may be formed of a thermoplastic resin or a crystalline polymer.
  • the thermoplastic resin may include at least one selected from the group consisting of hydroxyl group-containing resin, hydroxyl group-containing elastomer, carboxyl group-containing resin, carboxyl group-containing elastomer, epoxy group-containing resin, epoxy group-containing elastomer, acrylic group-containing resin, and acrylic group-containing elastomer. .
  • the thermoplastic resin preferably has a weight average molecular weight of 3,000 to 5,000,000.
  • the thermoplastic resin may include two or more resins having different molecular weights.
  • the thermoplastic resin may include a first thermoplastic resin having a weight average molecular weight of 3,000 to 30,000 and a second thermoplastic resin of 30,000 to 5,000,000.
  • the first thermoplastic resin and the second thermoplastic resin may be mixed in a weight ratio of 1:99 to 20:80.
  • the curable resin may include at least two resins.
  • the curable resin may include two kinds of resins having different curing conditions.
  • the two kinds of resins having different curing conditions are two kinds of thermosetting resins having different curing temperatures, two kinds of photocurable resins having different wavelengths of curing, or thermosetting resins and photocurable resins. .
  • the curing agent may be selected from the group consisting of a thermally active initiator of 70 ⁇ 200 °C, a photoactive initiator of 150 ⁇ 750nm and mixtures thereof.
  • the curing agent may further include a photobase generator that generates a base when irradiated with light.
  • the conductive adhesive composition for a circuit connection may include 1 to 200 parts by weight of the organometallic compound and 50 to 220 parts by weight of the curable resin and 0.5 to 50 parts by weight of the curing agent based on 100 parts by weight of the thermoplastic resin.
  • the conductive adhesive composition for the circuit connection may be a rubber particle or a liquid rubber, a corrosion inhibitor, a polyhedral oligomeric silsesquinoxane compound, a spiro compound, an ion exchange agent, an adhesive enhancer, a pigment, a phosphorus adhesion enhancer, a coupling agent, an organic filler, an inorganic filler, It may further include at least one additive selected from the group consisting of a promoter, a reducing agent and a polymerization inhibitor.
  • the conductive adhesive composition for a circuit connection may further include 1 to 30 parts by weight of conductive particles based on 100 parts by weight of the conductive adhesive composition for a circuit connection.
  • the organometallic compound is decomposed at 70 to 300 °C to provide a conductive adhesive composition for a circuit connection, characterized in that to generate a metal atom that is a conductive powder.
  • the resin may include a curable component composed of a thermoplastic resin, a curable resin, and a curing agent.
  • the organometallic compound may be composed of a first organic metal compound having a low decomposition temperature and a second organic metal compound having a higher decomposition temperature than the first organic metal compound.
  • this invention provides the circuit connection material characterized by forming the electrically conductive adhesive composition for circuit connection which concerns on this invention mentioned above in more than one film form, in order to achieve the said objective.
  • the film phase may have a multilayer structure.
  • the multilayer structure may include a conductive layer including an organometallic compound and a non-conductive layer formed on at least one surface of the conductive layer.
  • the conductive layer may include an organometallic compound and a thermoplastic resin or an organometallic compound and a curable component
  • the non-conductive layer may include a curable component or a thermoplastic resin.
  • connection material may be formed in a film shape, and the film shape may have a multilayer structure.
  • the multilayer structure may include a conductive layer including an organometallic compound and a non-conductive layer formed on at least one surface of the conductive layer.
  • the conductive layer may include an organometallic compound and a thermoplastic resin or a curable component
  • the non-conductive layer may include a curable component or a thermoplastic resin.
  • the layer containing the thermoplastic resin is preferably in contact with the substrate in the step of placing the circuit connection material.
  • circuit connecting member for electrically connecting the first circuit electrode and the second circuit electrode which face each other between the first substrate and the second substrate.
  • the circuit connecting member is formed using the circuit connecting material according to the present invention, wherein the first circuit electrode and the second circuit electrode is characterized in that the metal of the organometallic compound of the circuit connecting material is deposited and electrically connected.
  • a circuit connection structure is provided.
  • circuit connection structure comprising a circuit connecting member comprising a continuous precipitated metal for electrically connecting the first circuit electrode and the second circuit electrode opposed between the first substrate and the second substrate.
  • the circuit connecting member may be formed using a circuit connecting material including an organometallic compound, and the precipitated metal may be formed by depositing a metal of the organometallic compound.
  • the present invention is not only inexpensive by using an organometallic compound instead of insulating conductive particles, but also selectively precipitates between circuit electrodes for electrical connection so that a conductive passage is uniformly formed and has excellent insulating properties among other electrodes. It is possible to economically provide a conductive adhesive for reliable circuit connection including an inter conductive adhesive.
  • FIG. 1 is a cross-sectional SEM image of a COG module made of the circuit connection material of Example 1.
  • FIG. 2 is an image of a result of component analysis using EDS using the cross section of FIG. 1.
  • Example 4 is an image obtained by analyzing the indentation of the COG module made of the circuit connection material of Example 1 using an optical microscope.
  • FIG. 5 is a view showing an example of a circuit connecting material formed into a film according to the present invention.
  • FIG. 7 is a view showing still another example of a circuit connecting material formed into a film according to the present invention.
  • FIG. 8 is a diagram schematically illustrating a circuit connection structure according to an embodiment of the present invention.
  • 9A to 9D are flowcharts schematically illustrating a process of forming a circuit connection structure according to the present invention.
  • first substrate 110 first circuit electrode
  • the electrically conductive adhesive for circuit connection which concerns on this invention consists of (a) organometallic compound and resin.
  • the resin may include a curable component comprising (b) a thermoplastic resin and (c) a curable resin and a curing agent.
  • the organometallic compound is a compound that decomposes under a predetermined decomposition condition and precipitates on a circuit to provide a passage for electrical connection between the circuits.
  • the organometallic compound is decomposed to produce metal ions when placed under predetermined decomposition conditions, and the generated metal ions are reduced to generate metal atoms.
  • the generated metal atoms aggregate with each other and precipitate on the circuits to form passages providing electrical connections between the circuits.
  • the decomposition condition may be to apply energy such as temperature, wavelength and frequency. That is, the organometallic compound may be a compound decomposed at a predetermined temperature, a photosensitive compound decomposed when a predetermined wavelength is applied, or a compound decomposed when a predetermined frequency is applied.
  • the organometallic compound may be used by mixing at least two kinds of compounds having different decomposition conditions. That is, the organometallic compound may be used by mixing at least two kinds of compounds having different decomposition temperatures, or by mixing at least two kinds of compounds having different decomposition wavelengths, or by organometallic compounds decomposed at a predetermined temperature and by a predetermined wavelength.
  • the organometallic compound which decomposes can be mixed and used.
  • the organometallic compound may be used by mixing an organometallic compound requiring energy with low decomposition conditions and an organometallic compound requiring high energy with decomposition conditions.
  • an organometallic compound that requires low decomposition conditions plays a role of seeding by first decomposing and precipitating metal, compared to an organometallic compound requiring high decomposition conditions.
  • the required organometallic compound is decomposed, the reduced metal atom is quickly precipitated based on the seed to play a bulk role.
  • metals are quickly and easily precipitated between the circuit electrodes for the electrical connection, so that the conductive passages are uniformly formed.
  • the organometallic compound may be mixed with an organometallic compound decomposed at a predetermined temperature and an organometallic compound decomposed by a predetermined wavelength.
  • one of the organometallic compounds is decomposed to allow the metal to be precipitated to perform the seed role, and thereafter, the other of the organometallic compounds is decomposed to reduce the metal atoms to be quickly precipitated based on the seed to play a bulk role. can do.
  • the heating and the wavelength can be irradiated at the time of decomposition of the organometallic compound. As a result, both the former and the latter form metals quickly and easily between the circuit electrodes for electrical connection, thereby forming a uniform conductive path.
  • the decomposition condition of the organometallic compound may be a temperature. That is, the organometallic compound may be a compound that is decomposed at a temperature lower than the metal melting temperature and precipitates as a metal on the circuit to be electrically connected between the circuits.
  • the organometallic compound may be formed by combining metal with an organic material through atoms C, P, S, O and N.
  • the organometallic compound may be one in which an organic material is coupled to a metal by a ketone group, a mercapto group, a carboxyl group, an aniline group, an ether group, or a sulfite group.
  • the metals include Group 1 and Group 2 metals of the periodic table which are chemically active such as lithium and magnesium; Precious metals such as silver, gold, platinum and palladium; Traditional metals such as iron, zinc, tin, nickel, indium, lead, antimony and copper; It may include at least one selected from the group consisting of a metalloid element which is partially metal, such as silicon and boron.
  • the metal is silver, copper, nickel, tin, zinc, gold, chromium, manganese, indium, palladium, titanium, molybdenum or platinum.
  • the organometallic compound may be a saturated or unsaturated aliphatic, aromatic or alicyclic carboxylic acid metal having 0 to 12 carbon atoms having a carboxyl group of 1 to 3 (excluding the carbon number of the carboxyl group).
  • the organometallic compound is a carboxylic acid metal having 1 to 3 carboxyl groups, wherein the metal is silver, copper, nickel, tin, zinc, gold or platinum.
  • organometallic compounds are, for example, silver maleic acid, silver malonic acid, silver succinic acid, silver acetate, silver dried acid, methacrylic acid silver, propionic acid silver, sorbic acid silver, citric acid silver, undecylenic acid silver, neo- Silver decanoic acid, silver oleic acid, silver oxalate, silver formic acid, silver gluconate, silver phosphate, trimethylphosphine (hexafluoroacetylacetonate) silver (I), vinyltriethylsilane (hexafluacetylacetylonate) silver (I ), Copper maleic acid, copper malonic acid, copper succinate, copper acetate, copper dried acid, copper methacrylate, copper propionate, copper sorbate, copper citrate, copper undec
  • the organometallic compound may be used by mixing two kinds of compounds having different decomposition temperatures. More preferably, the organometallic compound may be used by mixing a first organic metal compound decomposed at less than 70 to 120 ° C. and a second organic metal compound decomposed at 120 to 300 ° C.
  • the first organic metal compound decomposed at a low temperature and the second organic metal compound decomposed at a high temperature are used, the first organic metal compound decomposed at a low temperature is first decomposed and precipitated to serve as a seed. After that, the second organic metal compound decomposed at a high temperature is decomposed, and the metal atom generated as it is rapidly precipitated based on the seed grows to play a bulk role.
  • the mixing ratio of the first organic metal compound and the second organic metal compound is 0.5: 99 to 30:70 by weight. It is preferable to use mixed. When mixed in such a ratio, there is an advantage that the metal precipitates quickly.
  • the decomposition conditions of the organometallic compound may be a wavelength. That is, the organometallic compound may be a photosensitive organometallic compound which is decomposed upon exposure to a predetermined wavelength and metallized on the circuit to be electrically connected between the circuits.
  • the photosensitive organometallic compound may be formed by combining a metal with an organic material through atoms C, S, O, and N.
  • the photosensitive organometallic compound may be combined with a metal, a mercapto group, an amide group, an amine group, and an ester base organic.
  • the metal may be selected from platinum, palladium, copper, rhodium, tungsten, iridium, silver, gold, and tantalum.
  • the photosensitive organometallic compound may include bis- (perfluoropropyl) -1,5-cyclooctadiene platinum (II); Bis- (perfluoropropyl) -1-methyl-1,5-cyclooctadiene platinum (II); And bis- (perfluoropropyl) -1-fluoromethyl-1,5-cyclooctadiene platinum (II). These can be used individually or in combination of 2 or more, respectively.
  • the photosensitive organometallic compound may be selected from those decomposed and metallized at 150 to 700 nm.
  • the organometallic compound may be used by mixing an organometallic compound decomposed and metalized at less than 150 to 300 nm and an organometallic compound decomposed and metalized at 300 to 700 nm.
  • the organometallic compound may be used to impart functionality to an organic material combined with a metal.
  • the fluorine component may be included in the organic material portion or phosphorus may be included to prevent the resin component from leaking onto the substrate.
  • the resin component may be prevented from leaking out on the substrate, thereby improving reliability.
  • the organometallic compound may use an encapsulated form having a coating layer formed on a surface thereof.
  • organometallic compounds are generally sensitive to heat and ultraviolet rays, it is important to secure stability when long-term storage is required. Therefore, when the organometallic compound is manufactured and used in the form of a capsule, an internal organometallic compound is released and reduced at a time point at which the capsule is broken by heat or pressure, thereby achieving a desired form of connection at a desired time point.
  • the coating layer may be one using a thermoplastic resin or a crystalline polymer.
  • the thermoplastic resin may be one based on styrene, styrene acrylonitrile, low molecular weight chlorinated polyethylene, soluble cellulose, acrylic, for example, methyl methacrylate or alicyclic acrylate.
  • the crystalline polymers are polyolefins, polyesters, polyamides, phenoxy resins, polylactic acid, polyethers, polyalkylene glycols or branched crystalline polymers. More preferably, the crystalline polymer is polyethylene, polypropylene, polyether, polyethylene glycol, phenoxy resin, polylactic acid or branched crystalline polymer.
  • the organometallic compound in the encapsulated form may be formed by various methods, for example, may be prepared by emulsion polymerization or dispersion polymerization.
  • the organometallic compound can be easily produced by emulsifying or dispersing a thermoplastic resin or the like and then polymerizing the organometallic compound.
  • the method of encapsulation by such a polymerization method can be easily performed by applying a well-known technique.
  • the organometallic compound of the encapsulated form as described above is excellent in storage stability, it is possible to increase the insulating properties between the different electrodes that do not require electrical connection.
  • the organometallic compound may be obtained by mixing an organometallic compound including a first metal and an organometallic compound including a second metal.
  • first and second circuit electrodes When the materials of the circuit electrodes for electrical connection (hereinafter, also referred to as first and second circuit electrodes for convenience of explanation) are different, an organometallic compound including a metal compatible with each electrode material is mixed. When used together, the adhesion between the electrodes can be facilitated.
  • the organometallic compound may be an organometallic compound containing the first metal having a high affinity with the material of the first circuit electrode, and the material and affinity of the second circuit electrode having a large affinity. It is preferable to use a mixture of organometallic compounds containing a second metal.
  • an organometallic compound including a metal having a high affinity with these may be selected based on the material of the circuit electrodes, which is easy for those skilled in the art.
  • an organic metal compound is used by mixing an organometallic compound including a first metal having a high affinity with a material of a first circuit electrode and an organometallic compound containing a second metal having a high affinity with a material of a second circuit electrode.
  • the mixing ratio is preferably 1:99 to 99: 1 by weight.
  • the organometallic compound according to the present invention is preferably added 1 to 200 parts by weight, more preferably 5 to 50 parts by weight based on 100 parts by weight of the thermoplastic resin.
  • the added amount of the organometallic compound is less than 1 part by weight, it is difficult for reliable electrical connection between the opposing circuits.
  • the amount of the organometallic compound is more than 200 parts by weight, a large amount of metal is precipitated so that the metal is not selectively precipitated only between the opposing circuit electrodes. Precipitation also occurs between circuit electrodes, resulting in a poor problem in terms of insulation properties.
  • thermoplastic resin (b) thermoplastic resin
  • thermoplastic resin may serve as a binder and may be a known one without particular limitation.
  • resins or elastomers containing hydroxyl groups resins or elastomers containing carboxyl groups, resins or elastomers containing epoxy groups, resins or elastomers containing acrylic groups, and the like can be preferably used.
  • the thermoplastic resin may be epoxy resin, melamine resin, phenoxy resin, polyurethane resin, polyimide resin, polyamide resin, polyethylene resin, polypropylene resin, poly (meth) acrylate resin, polyvinyl butyral resin, or the like. There is this. These can be used individually or in mixture of 2 or more, respectively.
  • a weight average molecular weight is between 3,000-5,000,000, It is suitable, More preferably, it is especially preferable from the viewpoint of compatibility that it is about 15,000-1,000,000.
  • the thermoplastic resin may be used by mixing two or more thermoplastic resins having different molecular weights. More preferably, the thermoplastic resin may be used by mixing a first thermoplastic resin having a weight average molecular weight of 3,000 to 30,000 and a second thermoplastic resin of 30,000 to 5,000,000. As such, when the first thermoplastic resin and the second thermoplastic resin having different molecular weights are mixed and used, compatibility increases to suppress bubble generation.
  • the first thermoplastic resin and the second thermoplastic resin having different molecular weights are mixed, the first thermoplastic resin and the second thermoplastic resin are preferably mixed in a weight ratio of 1:99 to 20:80.
  • compatibility can be maximized to suppress bubble generation.
  • the thermoplastic resin in order to easily remove the circuit connection material of the part requiring repair, may be one that can be easily dissolved or swelled in a specific solvent.
  • an epoxy-based thermoplastic resin may be used as the thermoplastic resin.
  • thermoplastic resin diacetone alcohol, acetonyl acetone, diisobutyl ketone, poron, isophorone, 2-hexanone, 2-heptanone, 4-heptanone, cyclohexanone, methyl It is easily dissolved or swelled in ketone organic solvents such as cyclohexanone and acetophenone and can be easily removed.
  • the epoxy-based thermoplastic resin is applicable to esters, ethers, phenols in addition to the ketones.
  • the said curable component consists of curable resin and a hardening
  • a curable resin such as a monomer or oligomer having one or more reactors and a curing agent that reacts with the reactor to cure or crosslink.
  • the reactor of the curable resin includes a polymerizable double bond.
  • curing agent is defined as including a initiator that crosslinks the polymerizable double bond.
  • thermosetting resin and a photocurable resin are mentioned, for example.
  • the thermosetting resin and photo-curable resin can be used without limitation in the art.
  • the thermosetting resin may include an epoxy group as the reactor, and the photocurable resin may include a (meth) acryl group as the reactor.
  • the curable resin may include an oxetane group, a urethane group, or a urea group.
  • the curable resin may be used in monomer or oligomer form.
  • the said curable resin can be used individually or in mixture of 2 or more as needed.
  • the average number of reactors per monomer and oligomer should be greater than 1, preferably greater than 1.5.
  • an inter-penetration network is formed between the resins, thereby enabling curing at low temperatures, thereby facilitating adhesion.
  • the curable resin is preferably used by mixing two different curing conditions.
  • the curing conditions may be temperature and wavelength.
  • the curable resin may be used by mixing two species having different curing temperatures, or by mixing two species having different curing ranges.
  • the curable resin may be a mixture of a thermosetting resin including an epoxy group as a reactor and an ultraviolet curable resin including a (meth) acryl group as a reactor.
  • the curable resin may be used by mixing a thermosetting resin and an ultraviolet curable resin.
  • the curable resin having a single curing condition when only the curable resin having a single curing condition is used as the curable resin, bubbles are easily generated in the process of curing at a high temperature for a short time at the time of forming the circuit connection structure described below, and the generated bubbles lower the adhesion and reliability. Will act as.
  • the formation of the circuit connection structure is first performed by one type of curing to increase the viscosity of the composition, and then the curing of the remaining species allows the formation of the circuit connection structure without bubble generation. Done.
  • the epoxy resin is specifically a bisphenol-based epoxy resin, 3,4-epoxycyclohexylmethyl-3 ', 4'- made from bisphenol A or bisphenol F epihalohydrin.
  • the (meth) acrylate resin is specifically, for example, (meth) acrylate, (meth) acrylamide, vinylpyrrolidone and azlactone Monomers and / or oligomers.
  • the monomers are mono-, di-, or polyacrylates and methacrylates (e.g.
  • the urethane resin may be used without limitation, which is generally used in the art.
  • a urethane-modified acrylate or urethane-modified epoxy or the like in which an epoxy group or an acryl group is bonded to the terminal may be used.
  • the thermosetting resin may be one that can be easily dissolved or swelled in a specific solvent with the thermosetting resin in order to easily remove the circuit connection material in a portion requiring repair.
  • an epoxy-based thermosetting resin can be used as the thermosetting resin.
  • the epoxy-based thermosetting resin As the thermosetting resin, diacetone alcohol, acetonyl acetone, diisobutyl ketone, porone, isophorone, 2-hexanone, 2-heptanone, 4-heptanone, cyclohexanone, methyl It is easily dissolved or swelled in ketone organic solvents such as cyclohexanone and acetophenone and can be easily removed.
  • the epoxy-based thermosetting resins may include esters, ethers, and phenols.
  • thermosetting resin contained in the curable component of this invention, if the thing which can start hardening of a thermosetting resin can be used without a restriction
  • the curing agent is an initiator, azo compound that generates radicals by heat or light irradiation, including latent epoxy curing agent as a curing agent activated by heating at a temperature of 70 ⁇ 200 °C or light irradiation of 150 ⁇ 750nm wavelength
  • cation initiators capable of light or thermal activation such as onium salts and the like, are not particularly limited and known ones can be used.
  • curing agents examples include encapsulated imidazoles, polyisocyanates, dicyandiamides, solid amines, solid acid anhydrides, solid amides, and organic acid dihydrazide compounds.
  • a hexafluoroantimotate compound As the cation initiator activated by heat or light, a hexafluoroantimotate compound, an onium salt, a phosphonium compound, or the like can be used.
  • Radical polymerization initiators activated by heat or light include diacyl peroxide derivatives, peroxydicarbonate derivatives, peroxyester derivatives, peroxyketal derivatives, dialkylperoxide derivatives, hydroperoxide derivatives, benzoin compounds and acetophenones. , Benzophenones, thioxanthones, anthraquinones, ⁇ -acyl oxime esters, phenylglyoxylates, benzyls, azo compounds, diphenyl sulfide compounds, acylphosphine oxide compounds, organic pigments A compound, an iron-phthalocyanine type compound, etc. are mentioned.
  • hardeners can be used individually or in mixture of 2 or more components as needed.
  • the curing agent may further include a photobase generator that generates a base when irradiated with light.
  • the low temperature hardenability is improved by promoting the decomposition of other generated curing agents, particularly radical polymerization initiators.
  • the photogenerator any compound that generates a base by irradiation with light may be used without particular limitation.
  • the photoacid generator may include a carbamic acid ester derivative, an oxime ester derivative, an amine imido derivative, an imidazolium salt derivative, a quaternary ammonium salt derivative, an ⁇ -amino ketone derivative, and the like.
  • the amount of the curable resin added in the curable component is preferably 50 to 220 parts by weight, and more preferably 70 to 140 parts by weight based on 100 parts by weight of the thermoplastic resin.
  • the curable resin is added within the above range, it is possible to stably secure physical properties, thermo-mechanical properties and adhesive strength after curing, and in particular, when the curable resin exceeds 220 parts by weight, May cause degradation.
  • the amount of the curing agent added in the curable component is preferably 0.5 to 50 parts by weight based on 100 parts by weight of the thermoplastic resin.
  • the amount of the curing agent is less than 0.5 parts by weight, the curing density is lowered, so it is not sufficient to secure physical properties, mechanical properties, and thermo-mechanical properties after curing, and when it exceeds 50 parts by weight, there is a problem of deterioration in storage stability.
  • the photobase generator when added to the curing agent, the photobase generator is preferably added in an amount of 0.01 to 200 parts by weight based on 100 parts by weight of the curable resin.
  • the photobase generator is included within the above range, the low temperature fast curing property is excellent and the film physical properties are good.
  • the adhesive composition for a circuit connection according to the present invention may further include various additives within the scope not departing from the object of the present invention in addition to the above components.
  • the additive when the circuit electrode includes an ITO electrode, the additive may include a corrosion inhibitor for preventing corrosion of the ITO electrode.
  • the corrosion inhibitor may use an adamantyl (meth) acrylate compound. Since the adamantyl (meth) acrylate compound contains a hydrophobic alicyclic structure, corrosion of the ITO electrode can be prevented.
  • adamantyl (meth) acrylate compound the adamantyl ester of acrylic acid or methacrylic acid can be used, and adamantyl may have substituents, such as alkyl groups, such as methyl and an ethyl group, a hydroxyl group, a halogen group, and a silyl group. .
  • 2-methyl- 2-adamantyl acrylate, 2-ethyl- 2-adamantyl acrylate, 2-methyl- 2-adamantyl methacrylate , 2-ethyl-2-adamantyl methacrylate, 3-hydroxy-1-adamantyl acrylate, 3-hydroxy-1-adamantyl methacrylate and the like can be exemplified. These can be used individually or in combination of 2 or more, respectively.
  • 2-methyl-2-adamantyl acrylate can be preferably used in view of ease of access and the like.
  • the corrosion inhibitor may be added 0.1 to 50 parts by weight, more preferably 5 to 20 parts by weight based on 100 parts by weight of the thermoplastic resin. When the corrosion inhibitor is contained in the above range, good corrosion protection characteristics of the ITO electrode can be obtained.
  • the additive may include rubber particles.
  • the rubber particles are further included, in the case of the thermoplastic resin, the melting point is lowered, and in particular, the rubber particles reduce the occurrence of a bad shape of the burr after adhesion, and reduce the bending of the substrate by peeling the adhesive.
  • the rubber particles include butadiene rubbers such as butadiene rubber, styrene butadiene rubber and acrylonitrile butadiene rubber, acrylic rubbers such as poly (butyl acrylate), silicone rubbers such as ethylene propylene rubber and poly (dimethyl siloxane). .
  • butadiene rubbers such as butadiene rubber, styrene butadiene rubber and acrylonitrile butadiene rubber
  • acrylic rubbers such as poly (butyl acrylate)
  • silicone rubbers such as ethylene propylene rubber and poly (dimethyl siloxane).
  • the rubber particles may be prepared by a conventional polymerization method, and the size of the rubber particles is preferably 30 ⁇ m or less, more preferably 0.1 to 15 ⁇ m in consideration of compatibility and workability.
  • liquid rubber may be added instead of the rubber particles, and a part of the rubber may be replaced.
  • the liquid rubber functions to relieve internal stress.
  • the liquid rubber may use a form prior to rubber granulation.
  • the rubber particles or liquid rubber may be added in an amount of 0.01 to 100 parts by weight based on 100 parts by weight of the thermoplastic resin.
  • rubber particles or liquid rubber is added within the above range, the melting point is lowered, and the effect of reducing burr generation or shock absorption may be sufficiently expressed.
  • conductive particles may be additionally added to reduce the amount of organometallic compound used and to increase the conductivity of the conductive adhesive.
  • the conductive particles may be a powder of a metal such as silver generally used in the art.
  • the conductive particles may be preferably used having an average particle diameter of 1 ⁇ 30 micrometers.
  • the conductive particles may be added to include 1 to 30 parts by weight based on 100 parts by weight of the conductive adhesive composition for circuit connection.
  • the adhesive composition for a circuit connection according to the present invention may further include an organic filler or an inorganic filler to improve the wettability of the metal separated from the organometallic compound.
  • the organic filler or the inorganic filler may be applied to have an average particle diameter of 1 to 30 micrometers according to the use, it may be used so that 1 to 30 parts by weight based on 100 parts by weight of the adhesive composition for a circuit connection.
  • the inorganic filler may be silicon particles, antimony oxide, or the like.
  • the additive Ketone organic solvent may be further included.
  • thermoplastic resin when used as the thermoplastic resin or an epoxy-based curable resin as the curable resin, diacetone alcohol, acetonyl acetone, diisobutyl ketone, poron, isophorone, 2-hexanone, It may further include a ketone organic solvent such as 2-heptanone, 4-heptanone, cyclohexanone, methylcyclohexanone, acetophenone.
  • ketone organic solvent such as 2-heptanone, 4-heptanone, cyclohexanone, methylcyclohexanone, acetophenone.
  • the adhesive composition for a circuit connection according to the present invention may further include an ion exchange agent.
  • the ion exchanger may be a cation exchanger or an anion exchanger.
  • the adhesive composition for a circuit connection uses an organometallic compound, and the organometallic compound is in a form in which a metal cation and a nonmetal anion are combined.
  • the adhesive composition for circuit connection contains impurity ions (especially Cl- and SO42-), they cause corrosion of an electrode and reduce reliability. Accordingly, it is preferable to further add a cation exchanger or an anion exchanger in order to reduce the impurity ions and to improve the reliability by containing impurity ions while promoting the reduction of the organometallic compound.
  • cation exchanger or anion exchanger generally known ones can be used without limitation.
  • the ion exchanger is ⁇ , ⁇ -phosphate metal oxides, more specifically ZP: Zr (HPO 4 ) 2 , TP: Ti (HPO 4 ) 2 , ZTP: ZrTi (HPO 4 ) 4 , Z1TP3: Zr 0.25 Ti 0.75 (HPO 4 ) 4 , Z3T1P: inorganic ion exchangers such as Zr 0.75 Ti 0.25 (HPO 4 ) 4 and HY zeolite and sulfonic acid groups, carboxyl groups, phenolic hydroxyl groups, quaternary ammonium bases and 1,2,3 tertiary And polymer ion exchangers containing amines.
  • ZP Zr (HPO 4 ) 2
  • TP Ti (HPO 4 ) 2
  • ZTP ZrTi (HPO 4 ) 4
  • Z1TP3 Zr 0.25 Ti 0.75 (HPO 4 ) 4
  • Z3T1P inorganic ion exchangers such
  • the adhesive composition for a circuit connection according to the present invention may further include a polyhedral oligomeric silsesquinoxane compound as an additive in order to secure a low coefficient of thermal expansion and high mechanical properties.
  • the polyhedral oligomeric silsesquinoxane compound is a compound represented by the following Chemical Formula 1 and has a silica cage structure having a size of 1 to 5 nm, and has both properties of silica (SiO 2), which is an inorganic material, and silicon (R 2 SiO), which is an organic material. It is an organic-inorganic intermediate or a hybrid compound having all.
  • the polyhedral oligomeric silsesquinoxane compound is specifically, for example, 1,3,5,7,9,11,14-hepta-isoctyltricyclo [7.3.3.15,11heptasiloxane-endo-3, 7,14-triol (trisilanolisooctyl-POSS, C56H122O12Si7), 1,3,5,7,9,11,14-heptacyclopentyltricyclo [7.3.3.1 5,11] heptasiloxane-endo -3,7,14-triol (trisilanol-POSS, C35H66O12Si7), 1,3,5,7,9,11,14-heptaisobutyltricyclo [7.3.3.15,11] heptasiloxane-endo- 3,7,14-triol (isobutyltrisilanol-POSS, C28H66O12Si7), 1,3,5,7,9,11-o
  • the POSS may be used to include 1 to 30 parts by weight based on 100 parts by weight of the adhesive composition for a circuit connection, and when included in the above range, good thermal and mechanical properties may be obtained.
  • the adhesive composition for a circuit connection according to the present invention may further include one or more spiro compounds selected from the compounds represented by the following formula (2) and (3) in order to alleviate the curing shrinkage and residual stress.
  • R 1 and R 2 are each a hydrocarbylene or a substituted hydrocarbylene bridge group having two or more bridge carbon atoms, and substituted functional groups are, for example, halo, ether-containing alkoxy, hydroxyl, and the like.
  • R1 and R2 are preferably each independently of the formula -CR3R4-CR5R6- (CR7R8) n-, wherein n is 0 or 1, and each of R3, R4, R5, R6, R7 and R8 is hydrogen, hydro; Carbil or substituted hydrocarbyl, provided that two of R3, R4, R5, R6, R7, and R8 adjacent to each other or paired together may form a ring.
  • R1 and R2 are more preferably the same.
  • R3, R4, R5, R6, R7 and R8 are more preferably independently hydrogen, alkyl, in particular alkyl containing 1 to 10 carbon atoms, more preferably methyl, ethyl or hydroxyalkyl, especially hydroxy Methyl.
  • R1 and R2 may form part of the polymer or oligomer structure or may be linked to the polymer or oligomer structure.
  • "Hydrocarbylene” consists of one or more hydrogen atoms and one or more carbon atoms and represents a divalent moiety (optionally bonded to one or more other moieties) whose free atoms are not bonded to a double bond. That is, hydrocarbylene can be formed by removing two hydrogen atoms from the hydrocarbon (eg, forming alkylene from alkanes).
  • X and Y independently represent a linear or branched hydrocarbylene each having a reactive group.
  • the hydrocarbylene may have from 2 to 80 carbon atoms, preferably from 2 to 20 carbon atoms, most preferably from 2 to 10 carbon atoms.
  • the hydrocarbylene is one or more hetero-atoms, optionally selected from the group consisting of oxygen, nitrogen, sulfur and phosphorus, and / or amides, thioamides, thioesters, urethanes, ureas, sulfones, sulfoxy, ethers, esters, Epoxy, cyano, halogen, amino, thiol, hydroxyl, nitro, phosphorus, sulfoxy, amido, ether, ester, urea, urethane, thioester, thioamide, amide, carboxyl, carbonyl, aryl, acyl and It may be substituted with one or more groups selected from the group consisting of olefinically unsaturated groups.
  • X and Y, respectively, or X and Y together may form part of a polymer or oligomer structure, or may be linked to a polymer or oligomer structure.
  • an imide resin may be used as the additive to increase insulation resistance.
  • a maleimide compound and a citraconimide compound can be illustrated.
  • maleimide compound examples include 1-methyl-2,4-bismaleimidebenzene, N, N'-m-phenylenebismaleimide, N, N'-p-phenylenebismaleimide, N, N'-m-toluenebismaleimide, N, N'-4,4-biphenylenebismaleimide, N, N'-4,4- (3,3'-dimethylbiphenylene) bismaleim Mead, N, N'-4,4- (3,3'-dimethyldiphenylmethane) bismaleimide, N, N'-4,4- (3,3'-diethyldiphenylmethane) bismaleimide , N, N'-4,4-diphenylmethanebismaleimide, N, N'-4,4-diphenylpropanebismaleimide, N, N'-3,3'-diphenylsulfonbismaleimide, N, N'-4,4-diphenyletherbismaleimide
  • a citraconimide compound a phenyl cytraconimide, 1-methyl-2, 4-biscitraconimide benzene, N, N'-m-phenylene biscitraconimide, N, N '-p-phenylenebiscitraconimide, N, N'-4,4-biphenylenebiscitraconimide, N, N'-4,4- (3,3-dimethylphenylene) bissheet Laconimide, N, N'-4,4- (3,3-dimethylphenylmethane) bisci toraconimido, N, N'-4,4- (3,3-diethyldiphenylmethane) bis Citraconimide, N, N'-4,4-diphenylmethanebiscitraconimide, N, N'-4,4-diphenylpropanebiscitraconimide, N, N'-4,4- Diphenylethylbiscitraconimi
  • the adhesive composition for a circuit connection is for improving the processability of known adhesion promoters, inorganic pigments and organic dyes, which are not particularly limited in order to provide a circuit connection material having a suitable processability and excellent reliability for a variety of substrates
  • Additives such as additives and phosphorus adhesion promoters, antioxidants, coupling agents, accelerators, reducing agents and polymerization inhibitors and reducing agents may be further used.
  • the amount of the additive may be added to include less than 5 parts by weight with respect to 100 parts by weight of the adhesive composition for a circuit connection.
  • the use form of the electrically-conductive adhesive composition for circuit connection mentioned above is not specifically limited,
  • the said electrically-conductive adhesive composition for circuit connection is used in the liquid form which melt
  • the organic solvent can be used without limitation generally used in the art, for example, toluene, methyl ethyl ketone, ethyl acetate may be used.
  • the circuit connection material formed by forming above-mentioned electrically conductive adhesive composition for circuit connections in one or more film form is provided.
  • the circuit connection material according to the present invention comprises (a) an organometallic compound, (b) a thermoplastic resin, and (c) a curable component consisting of a curable resin and a curing agent, as described above for each component. Therefore, detailed description thereof will be omitted.
  • circuit connection material formed in the film form as mentioned above When the circuit connection material formed in the film form as mentioned above is used, handling becomes easy and workability improves.
  • FIG. 5 is a diagram illustrating an example of a circuit connection material formed in a film shape.
  • the circuit connection material 30 may be formed in a single layer structure.
  • the circuit connection material 30 having such a single layer structure can be easily dried by applying a conductive adhesive composition for a circuit connection containing the organometallic compound 31 according to the present invention to a release-treated film (not shown). You can get it.
  • the electrically conductive adhesive composition for circuit connection can use the liquid phase melt
  • the release treated film may be a polyethylene terephthalate film or the like, and the coating may be performed by using a conventional ceramics, and the coating thickness, that is, the thickness of the circuit connection material may vary depending on the intended use, but is preferable. It is 5 ⁇ 50um. Moreover, the film which performed the mold release process can also use the thing to which antistatic treatment was carried out as needed.
  • FIG. 6 is a view showing another example of a circuit connecting material formed into a film
  • FIG. 7 is a view showing another example of a circuit connecting material formed into a film.
  • each layer may include at least one component contained in the conductive adhesive composition for a circuit connection according to the present invention, at least one of each layer includes an organometallic compound (31).
  • the multilayer structure may include a conductive layer 32 including the organometallic compound 31 and a non-conductive layer 33 formed on at least one surface of the conductive layer 32. That is, the non-conductive layer 33 is formed only on one surface of the conductive layer 32 as shown in FIG. 6, or both the upper and lower surfaces of the conductive layer 32 are non-conductive layer 33 as shown in FIG. 7. Can be formed.
  • the conductive layer 32 may include an organometallic compound 31 and a thermoplastic resin, and the non-conductive layer 33 may include a curable component including a curable resin and a curing agent.
  • the conductive layer 32 may include an organometallic compound 31 and a curable component, and the non-conductive layer 33 may include a thermoplastic resin.
  • the circuit connection material 30 is preferably included in the layer bonded to the substrate.
  • the circuit connection materials 30a and 30b of the multilayer structure described above form the non-conductive layer 33 and the conductive layer 32 sequentially on a release-treated film (not shown) or the conductive layer 32. It can be obtained easily by forming the non-conductive layer 33 again on the substrate.
  • the release-treated film can be removed in any process before and after forming the circuit connection structure, and is preferably removed in the process of forming the circuit connection structure in consideration of ease of handling.
  • the circuit connection material 30a having a multilayer structure is coated with a liquid-containing material containing an organometallic compound 31 and a thermoplastic resin (or curable component) on a release-treated film, followed by drying to form a conductive layer 32.
  • the liquid crystal containing the curable component (or the thermoplastic resin) is coated on the conductive layer 32 and then dried to form the non-conductive layer 33.
  • the circuit connection material 30a of the form shown in FIG. 6 can be obtained.
  • the liquid phase can be obtained by dissolving and / or dispersing each component in a solvent.
  • the circuit connection material 30b of the multilayer structure is coated with a liquid phase containing a curable component (or thermoplastic resin) to a film subjected to a release treatment, and then dried to form a non-conductive layer 33.
  • a liquid phase containing an organometallic compound 31 and a thermoplastic resin (or curable component) on the upper side, it is dried to form a conductive layer 32, and then curable component (on the upper side of the conductive layer 32)
  • the non-conductive layer 33 may be easily formed by applying a liquid containing a thermoplastic resin) and then drying. In this case, the circuit connection material 30b of the form shown in FIG. 7 can be obtained.
  • the thickness of each layer may vary depending on the purpose of use, but preferably 2 to 48 ⁇ m, and the thickness of the final circuit connection material is preferably 5 to 50 ⁇ m.
  • circuit connection structure formed using the above-mentioned circuit connection material 30 is provided.
  • FIG. 8 is a diagram schematically illustrating a circuit connection structure according to an embodiment of the present invention.
  • the circuit connection structure includes a first substrate 100 having a first circuit electrode 110 and a second substrate 200 having a second circuit electrode 210. And a circuit connecting member 40 formed between the first substrate 100 and the second substrate 200.
  • the circuit connecting member 40 is a continuous precipitation metal for electrically connecting the first circuit electrode 110 and the second circuit electrode 210 which face each other between the first substrate 100 and the second substrate 200. (34).
  • the first and second substrates 100 and 200 are not particularly limited as long as the circuit electrodes 110 and 210 are formed to require electrical connection.
  • glass or plastic substrates, printed wiring boards, ceramic wiring boards, flexible wiring boards, semiconductor silicon chips, etc., on which electrodes are formed of ITO or the like used in liquid crystal displays may be used, and these may be used in combination as necessary.
  • various surface conditions such as materials made of organic materials such as printed wiring boards and polyimides, and inorganic materials such as metals such as copper and aluminum, and indium tin oxide (ITO), silicon nitride (SiNx), and silicon dioxide (SiO2)
  • ITO indium tin oxide
  • SiNx silicon nitride
  • SiO2 silicon dioxide
  • the circuit connection member 40 is formed using the circuit connection material according to the present invention, and the connection material includes an organometallic compound 31. Since the description thereof is as described above, a detailed description thereof will be omitted. In addition, although the figure shows using the circuit connection material which has a single layer film shape, it turns out that the circuit connection material which has the film shape of the multilayer structure mentioned above is also applicable similarly.
  • the organometallic compound 31 is decomposed upon pressurization while applying heat or a wavelength to selectively precipitate between the first circuit electrode 110 and the second circuit electrode 210, which require a metal component to be electrically connected.
  • the deposited metal 34 exhibits a conductive property, and shows excellent insulating properties between other electrodes that do not require electrical connection.
  • the first and second circuit electrodes 110 and 210 are electrically connected by discontinuous conductive balls, but in the present invention, the metal formed by decomposition of the organometallic compound 31 is formed. While agglomerated to form a continuous phase, the precipitated metal 34 formed in the continuous phase electrically connects the first circuit electrode 110 and the second circuit electrode 210.
  • the present invention provides a manufacturing method for easily manufacturing the circuit connecting structure.
  • 9A to 9D are flowcharts schematically illustrating a process of forming a circuit connection structure according to the present invention.
  • Method of manufacturing a circuit connecting structure comprises the steps of preparing a first substrate 100 having a first circuit electrode 110 (see Fig. 9a); Placing a circuit connection material (30) comprising an organometallic compound (31) on the first substrate (100) (see FIG. 9B); Disposing the second substrate 200 having the second circuit electrode 210 on the circuit connection material 30 so that the first circuit electrode 110 and the second circuit electrode face each other (see FIG. 9C). ; And a predetermined decomposition condition is applied to the organometallic compound 31 so that a metal component is selectively precipitated between the first circuit electrode 110 and the second circuit electrode 210 so that the first circuit electrode 110 and the second circuit. And electrically connecting the circuit electrodes 210 (see FIG. 9D).
  • the circuit connection material 30 includes the organic metallization 31 as described above, and may be applied by using the adhesive composition for circuit connection according to the present invention.
  • the first substrate 100 and the second substrate 200 are not particularly limited as long as the circuit electrodes 110 and 210 that require electrical connection are formed.
  • a method of manufacturing a circuit connection structure according to the present invention will be described.
  • a step of preparing a first substrate 100 having a first circuit electrode 110 is provided. Will go through.
  • the circuit connection material 30 including the organometallic compound 31 is positioned on the first substrate 100.
  • the circuit connection material 30 is a film as shown in the drawing
  • the circuit connection material 30 is placed on the first substrate 100 by placing the circuit connection material on the first substrate 100. You can.
  • the circuit connection material is in a liquid state
  • the circuit connection material is placed on the first substrate 100 by coating and drying the adhesive composition for circuit connection according to the present invention on the first substrate 100. You can. In consideration of handling and ease of operation, it is preferable to use a circuit-like circuit connection material 30 as shown in the figure.
  • the figure shows using the circuit connection material which has a film form of a single layer, it turns out that the circuit connection material which has the film shape of the multilayer structure mentioned above is also applicable similarly.
  • the layer containing the thermoplastic resin is preferably placed in contact with the substrate. In this case, since the circuit connecting material can be easily separated by applying heat, the repair can be easily performed.
  • the circuit connection material may be provided in the form of depositing a metal only in a specific portion in advance as necessary.
  • the organometallic compound of the portion exposed to the light may be decomposed so that the metal is present only in the form of precipitated metal.
  • the metal particles are precipitated in a desired size and shape at a desired position, thereby easily coping with the structure of the circuit to be connected.
  • the structure of the circuit to be connected and the structure and size of the deposited metal particles have the same fine pitch, the micro pitch and the complicated electrode can be easily electrically connected.
  • the first circuit electrode 110 and the second circuit electrode may be replaced with the second substrate 200 having the second circuit electrode 210 on the circuit connection material 30. It is arranged to face each other.
  • a predetermined decomposition condition is applied to the organometallic compound 31 so that a metal component is selectively disposed between the first circuit electrode 110 and the second circuit electrode 210. Precipitating is performed to electrically connect the first circuit electrode 110 and the second circuit electrode 210.
  • the deposited metal 34 may obtain a circuit connection structure electrically connecting the first circuit electrode 110 and the second circuit electrode 210.
  • the decomposition conditions may be a temperature, a wavelength and a frequency, as described in the above description of the organometallic compound of the adhesive composition for a circuit connection, preferably a temperature. That is, the organic metal compound 31 may be decomposed by heating to a predetermined temperature so that the metal component may be selectively precipitated between the first circuit electrode 110 and the second circuit electrode 210.
  • the pressurization may be further performed in the heating process, the heating may be carried out in the range of 70 ⁇ 300 °C.
  • the organometallic compound 31 When heated at the above temperature, the organometallic compound 31 is decomposed and the metal component is precipitated as a metal on the circuit, and the precipitated metal 34 provides a path for electrical connection between the circuit electrodes 110 and 210. do.
  • the organometallic compound which is decomposed and metallized at a low temperature is first decomposed and precipitated to serve as a seed, and decomposed and metallized at a high temperature.
  • the organometallic compound is rapidly precipitated based on the seed and grows to play a bulk role.
  • the circuit connection material 30 includes a curable component, which is composed of a curable resin and a curing agent.
  • the curing agent is activated by light or heat, thereby curing the curable resin by polymerization.
  • the curing agent is activated, and the first substrate 100 and the second substrate 200 may be adhered to each other by curing.
  • the circuit connection structure can be formed without bubble generation.
  • organometallic compound 20 parts by weight of silver acetate (Aldrich)
  • thermoplastic resin 25 parts by weight of phenoxy resin (YP-50, Kukdo Chemical) and 15 parts of acrylic rubber (SG-80H, Nagase Chemtex) Part
  • Thermosetting resin 20 parts by weight of an epoxy resin (RKB 4110, Regina Chemical)
  • curing agent 20 parts by weight of a thermally active latent curing agent (HX-3932HP, Asahi Chemical)
  • Silicon particles T- 120, Momentive Performance Materials 10 parts by weight of toluene (80%) and methyl ethyl ketone (20%) uniformly mixed with 60% solids and applied on a PET film subjected to release and antistatic treatment, 80 °C It dried in the dryer of and produced the circuit connection material of 25 micrometers in thickness.
  • a circuit connection material was prepared in the same manner as in Example 1, except that the organic-metal compound of the film adhesive used in Example 1 was not added, and insulating coated conductive particles having a size of 4 micrometers were used.
  • circuit connection material prepared in the above Examples and Comparative Examples is applied to the chip-on-glass connection process during the manufacturing process of the display module to confirm the connection possibility of the ultra fine pitch. Evaluations such as indentation (degree of pressing the conductive particles) were conducted. In particular, the adhesion and connection resistance of the fabricated circuit connection material were evaluated using a glass substrate with a gold-coated circuit and a driving circuit IC made of silicon (circuit material: gold, circuit area: 1600um2, circuit spacing: 10um). In connection process conditions, the circuit connection material was temporarily fixed to 80 degreeC, 2 second, and 1 Mpa on ITO glass, and the connection process was performed on the conditions of 170 degreeC, 15 second, and 2 MPa.
  • Example 1 including an organometallic compound As shown in Table 1, in Example 1 including an organometallic compound, the adhesive force showed a similar tendency compared to Comparative Example 1 including the insulating conductive particles instead of the organometallic compound, but in terms of connection resistance and insulation resistance It was confirmed that the excellent electrical properties.
  • Fig. 1 shows the connection cross section of a scanning electron microscope (SEM, Carl) after connecting a drive circuit IC to ITO glass using a circuit connection material made of the component of Example 1 at given connection process conditions (170 degrees, 15 seconds).
  • SEM scanning electron microscope
  • SUPRA 40 model is a photograph showing the state of the silver selectively aggregated between the upper circuit electrode (first circuit electrode) and the lower circuit electrode (second circuit electrode) at a magnification of 1,000 times
  • Figure 2 In FIG. 1, the same equipment and conditions as those of FIG. 1 are used to determine whether the metal deposited between the upper circuit electrode (first circuit electrode) and the lower circuit electrode (second circuit electrode) is silver, which is a metal separated from the used organic metal compound. This is a picture of the component analysis (EDS).
  • EDS component analysis
  • FIG. 3 shows the differential lens attached through the lower glass substrate after connecting the driving circuit IC to the ITO glass using the circuit connection material prepared from the component of Comparative Example 1 under given connection process conditions (170 degrees, 15 seconds).
  • Figure 4 is a connection process conditions using a circuit connection material prepared with the components of Example 1 (170 degrees, After the driving circuit IC is connected to the ITO glass in 15 seconds, the indentation is evaluated by the same equipment and conditions as those of FIG. 3 through the lower glass substrate.
  • this invention is used for the adhesive composition used to electrically connect the circuit which opposes in industry, such as a display or a semiconductor, and the circuit connection material which can be manufactured using this.

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Abstract

L'invention concerne une composition adhésive électroconductrice pour des connexions de circuits, ainsi qu'un adhésif électroconducteur pour des connexions de circuit, lequel comprend : (a) un composé organométallique ; (b) une résine thermoplastique ; et (c) un composant solidifiable comprenant une résine solidifiable et un agent solidifiant. L'adhésif électroconducteur pour connexions de circuit selon la présente invention peut être utilisé comme adhésif électroconducteur pour des connexions de circuits entre des électrodes ayant un pas très fin car il permet non seulement de réduire les coûts en utilisant un composé organométallique au lieu de particules électroconductrices isolantes, mais aussi car la déposition se fait sélectivement entre les électrodes de circuit en contact de manière à obtenir une formation de trajet électroconducteur uniforme tout en obtenant des caractéristiques d'isolation remarquables entre différentes électrodes.
PCT/KR2011/000651 2010-02-04 2011-01-31 Composition adhésive électroconductrice pour connexions de circuits, et matériau de connexion de circuits, structure de connexion de circuit et procédé de production de structure de connexion de circuit WO2011096687A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2010-0010445 2010-02-04
KR20100010445 2010-02-04
KR1020100135663A KR101260440B1 (ko) 2010-02-04 2010-12-27 회로 접속용 도전 접착제 조성물, 회로 접속재료, 회로 접속구조체 및 회로 접속구조체의 제조방법
KR10-2010-0135663 2010-12-27

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CN106103624A (zh) * 2014-03-28 2016-11-09 东友精细化工有限公司 粘着剂组合物和包含粘着剂组合物的偏光板
CN106133099A (zh) * 2014-03-26 2016-11-16 东友精细化工有限公司 粘着剂组合物和包含粘着剂组合物的偏光板

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US6039896A (en) * 1998-03-18 2000-03-21 Sumitomo Bakelite Co., Ltd. Anisotropic conductive adhesive and method for preparation thereof and an electronic apparatus using said adhesive
US20050084689A1 (en) * 2003-06-30 2005-04-21 Hwang Euk C. Organometallic precursor composition and method of forming metal film or pattern using the same

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KR100210740B1 (ko) * 1991-07-12 1999-07-15 스프레이그 로버트 월터 비등방성의 전도성 접착제 필름
WO1997012929A1 (fr) * 1995-10-05 1997-04-10 Henkel Corporation Compositions de resines thermodurcissables
US6039896A (en) * 1998-03-18 2000-03-21 Sumitomo Bakelite Co., Ltd. Anisotropic conductive adhesive and method for preparation thereof and an electronic apparatus using said adhesive
US20050084689A1 (en) * 2003-06-30 2005-04-21 Hwang Euk C. Organometallic precursor composition and method of forming metal film or pattern using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106133099A (zh) * 2014-03-26 2016-11-16 东友精细化工有限公司 粘着剂组合物和包含粘着剂组合物的偏光板
CN106103624A (zh) * 2014-03-28 2016-11-09 东友精细化工有限公司 粘着剂组合物和包含粘着剂组合物的偏光板
CN106103624B (zh) * 2014-03-28 2019-03-15 东友精细化工有限公司 粘着剂组合物和包含粘着剂组合物的偏光板

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