WO2012111183A1 - 感光性組成物及びプリント配線板 - Google Patents
感光性組成物及びプリント配線板 Download PDFInfo
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- WO2012111183A1 WO2012111183A1 PCT/JP2011/064778 JP2011064778W WO2012111183A1 WO 2012111183 A1 WO2012111183 A1 WO 2012111183A1 JP 2011064778 W JP2011064778 W JP 2011064778W WO 2012111183 A1 WO2012111183 A1 WO 2012111183A1
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- photosensitive composition
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/075—Silicon-containing compounds
- G03F7/0757—Macromolecular compounds containing Si-O, Si-C or Si-N bonds
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- 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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/285—Permanent coating compositions
- H05K3/287—Photosensitive compositions
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- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/0209—Inorganic, non-metallic particles
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0263—Details about a collection of particles
- H05K2201/0266—Size distribution
Definitions
- the present invention relates to a photosensitive composition suitably used for forming a resist film such as a solder resist film formed on a substrate or a resist film reflecting light formed on a substrate on which a light emitting diode chip is mounted. And a printed wiring board using the photosensitive composition.
- Solder resist films are widely used as protective films for protecting printed wiring boards from high-temperature solder.
- a light emitting diode (hereinafter abbreviated as LED) chip is mounted on the upper surface of a printed wiring board.
- a white solder resist film may be formed on the upper surface of the printed wiring board in order to use light that has reached the upper surface side of the printed wiring board among the light emitted from the LEDs.
- not only light directly irradiated from the surface of the LED chip to the opposite side of the printed wiring board but also reflected light that reaches the upper surface side of the printed wiring board and is reflected by the white solder resist film can be used. . Therefore, the utilization efficiency of the light generated from the LED can be increased.
- Patent Document 1 contains an alkoxy group-containing silane-modified epoxy resin obtained by a dealcoholization reaction between an epoxy resin and a hydrolyzable alkoxysilane.
- a resist material further containing an unsaturated group-containing polycarboxylic acid resin, a diluent, a photopolymerization initiator, and a cured adhesion-imparting agent is disclosed.
- Patent Document 2 discloses a white solder resist material containing a carboxyl group-containing resin having no aromatic ring, a photopolymerization initiator, an epoxy compound, a rutile titanium oxide, and a diluent. Yes.
- the resist material when a conventional resist material is coated on a substrate, the resist material has low repellency characteristics, and the resist material may be disposed in an unintended region.
- An object of the present invention is to provide a photosensitive composition excellent in defoaming properties and repelling properties when coated on a coating target member, and a printed wiring board using the photosensitive composition. It is.
- the first silica includes a polymerizable polymer having a carboxyl group, a photopolymerization initiator, titanium oxide, a first silica, a second silica, and polydimethylsiloxane.
- the primary particle size of the second silica is 0.5 ⁇ m or more and 10 ⁇ m or less, and the viscosity (mPa ⁇ s) at 25 ° C. at a shear rate of 1 rpm is ⁇ 1.
- a photosensitive composition having a viscosity ratio ( ⁇ 1 / ⁇ 10) of 1.1 or more when the viscosity at 25 ° C. at a shear rate of 10 rpm (mPa ⁇ s) is ⁇ 10 is provided.
- a phenol-based antioxidant is further included.
- the content (% by weight) of the first silica in 100% by weight of the photosensitive composition is C1
- the amount of the photosensitive composition in 100% by weight of the photosensitive composition is
- the content ratio (C1 / C2) is 0.1 or more and 1 or less.
- the photosensitive composition according to the present invention is suitably used as a solder resist composition.
- the photosensitive composition according to the present invention is preferably a solder resist composition.
- the printed wiring board according to the present invention includes a printed wiring board main body having a circuit on the surface, and a solder resist film laminated on the surface of the printed wiring board main body on which the circuit is provided. It is formed using a photosensitive composition constructed according to the present invention.
- the photosensitive composition according to the present invention includes a polymerizable polymer having a carboxyl group, a photopolymerization initiator, titanium oxide, a first silica having a primary particle size of 5 nm to 100 nm, and a primary particle size.
- the second silica having a viscosity of 0.5 ⁇ m or more and 10 ⁇ m or less and polydimethylsiloxane, and the viscosity ratio ( ⁇ 1 / ⁇ 10) in the photosensitive composition is 1.1 or more
- FIG. 1 is a partially cutaway front sectional view schematically showing an example of an LED device having a resist film using a photosensitive composition according to an embodiment of the present invention.
- the photosensitive composition according to the present invention includes a polymerizable polymer (A) having a carboxyl group, a photopolymerization initiator (B), titanium oxide (C), first silica (D1), and second. Silica (D2) and polydimethylsiloxane (E).
- the primary particle diameter of the first silica (D1) is 5 nm or more and 100 nm or less.
- the primary particle diameter of the second silica (D2) is 0.5 ⁇ m or more and 10 ⁇ m or less.
- the viscosity ratio ( ⁇ 1 / ⁇ 10) is 1.1 or more.
- the defoaming property of the photosensitive composition is improved when the photosensitive composition is coated on a coating target member such as a substrate.
- the hardened film such as a resist film formed by the photosensitive composition according to the present invention is less likely to contain bubbles and less likely to generate voids.
- the reliability of various electronic components such as a printed wiring board using the photosensitive composition according to the present invention can be enhanced.
- the adoption of the above-described configuration in the photosensitive composition according to the present invention makes it difficult for the photosensitive composition to be repelled when the photosensitive composition is applied onto a coating target member such as a substrate.
- a cured film such as a resist film formed from the photosensitive composition according to the present invention is difficult to be disposed in an unintended region.
- the reliability of electronic components, such as a printed wiring board using the photosensitive composition concerning this invention can be improved.
- the upper limit of the viscosity ratio ( ⁇ 1 / ⁇ 10) is not particularly limited, but the viscosity ratio ( ⁇ 1 / ⁇ 10) is preferably 5 or less.
- the polymerizable polymer (A) has a carboxyl group.
- the polymerizable polymer (A) having a carboxyl group has polymerizability and can be polymerized. When the polymerizable polymer (A) has a carboxyl group, the developability of the photosensitive composition is improved.
- Examples of the polymerizable polymer (A) include an acrylic resin having a carboxyl group, an epoxy resin having a carboxyl group, and an olefin resin having a carboxyl group.
- the “resin” is not limited to a solid resin, and includes a liquid resin and an oligomer.
- the polymerizable polymer (A) is preferably the following carboxyl group-containing resins (a) to (e).
- (E) A resin obtained by reacting an epoxy compound having an aromatic ring with a saturated polybasic acid anhydride or an unsaturated polybasic acid anhydride, or an epoxy compound having an aromatic ring and at least one unsaturated double bond Resin obtained by further reacting with saturated polybasic acid anhydride or unsaturated polybasic acid anhydride after reacting with carboxyl group-containing compound
- the content of the polymerizable polymer (A) having a carboxyl group is preferably 5% by weight or more, more preferably 10% by weight or more, and preferably 50% by weight or less. Is 40% by weight or less.
- the content of the polymerizable polymer (A) is not less than the above lower limit and not more than the above upper limit, the curability of the photosensitive composition is improved.
- Photopolymerization initiator (B) Since the photosensitive composition concerning this invention contains a photoinitiator (B), it can harden a photosensitive composition by irradiation of light.
- the photopolymerization initiator (B) is not particularly limited. As for a photoinitiator (B), only 1 type may be used and 2 or more types may be used together.
- Examples of the photopolymerization initiator (B) include acylphosphine oxide, halomethylated triazine, halomethylated oxadiazole, imidazole, benzoin, benzoin alkyl ether, anthraquinone, benzanthrone, benzophenone, acetophenone, thioxanthone, benzoic acid ester , Acridine, phenazine, titanocene, ⁇ -aminoalkylphenone, oxime, and derivatives thereof.
- the said photoinitiator (B) only 1 type may be used and 2 or more types may be used together.
- the content of the photopolymerization initiator (B) is preferably 0.1 parts by weight or more, more preferably 1 part by weight or more, preferably 100 parts by weight of the polymerizable polymer (A) having a carboxyl group. 30 parts by weight or less, more preferably 15 parts by weight or less.
- the photosensitivity of the photosensitive composition can be further enhanced.
- titanium oxide (C) Since the photosensitive composition according to the present invention contains titanium oxide, a cured product film such as a resist film having a high reflectance can be formed.
- the titanium oxide (C) contained in the photosensitive composition according to the present invention is not particularly limited. As for titanium oxide (C), only 1 type may be used and 2 or more types may be used together.
- titanium oxide (C) By using titanium oxide (C), it is possible to form a resist film having a high reflectance as compared with the case of using an inorganic filler other than titanium oxide (C).
- the titanium oxide (C) is preferably rutile titanium oxide or anatase titanium oxide.
- rutile type titanium oxide By using rutile type titanium oxide, a more excellent resist film can be formed by heat-resistant yellowing.
- the anatase type titanium oxide has a lower hardness than the rutile type titanium oxide. For this reason, the use of anatase-type titanium oxide can improve the processability of the resist film.
- the titanium oxide (C) preferably contains rutile titanium oxide surface-treated with silicon oxide or a silicone compound.
- the content of the rutile titanium oxide surface-treated with the silicon oxide or the silicone compound is preferably 10% by weight or more, more preferably 30% by weight or more, preferably 100% by weight. % Or less.
- the total amount of the titanium oxide (C) may be rutile titanium oxide surface-treated with the silicon oxide or the silicone compound.
- rutile titanium oxide surface-treated with silicon oxide or silicone compound examples include, for example, product number: CR-90 manufactured by Ishihara Sangyo Co., Ltd., which is a rutile chlorine method titanium oxide, and manufactured by Ishihara Sangyo Co., Ltd., which is a rutile sulfuric acid method titanium oxide.
- the content of titanium oxide (C) is preferably 3% by weight or more, more preferably 10% by weight or more, still more preferably 15% by weight or more, preferably 80% by weight. % Or less, more preferably 75% by weight or less, and still more preferably 70% by weight or less.
- the content of titanium oxide (C) is not less than the above lower limit and not more than the above upper limit, it is difficult to yellow when the resist film is exposed to a high temperature. Furthermore, a photosensitive composition having a viscosity suitable for coating can be easily prepared.
- the photosensitive composition concerning this invention contains the 1st silica (D1) and the 2nd silica (D2) as a silica (D).
- the primary particle diameter of the first silica (D1) is 5 nm or more and 100 nm or less.
- the primary particle diameter of the second silica (D2) is 0.5 ⁇ m or more and 10 ⁇ m or less.
- the first and second silicas (D1) and (D2) are both silica particles.
- the first and second silicas (D1) and (D2) are different from polydimethylsiloxane (E) described later.
- the first and second silicas (D1) and (D2) are blended separately from the polydimethylsiloxane (E).
- the primary particle size of the first and second silicas (D1) and (D2) is a value measured by measuring the particle size of the powder using a laser diffraction method.
- both of the first and second silicas (D1) and (D2) having a specific primary particle size greatly contributes to the improvement of the defoaming property and repelling property of the photosensitive composition. Moreover, it becomes easy to make the said viscosity ratio ((eta) 1 / (eta) 10) 1.1 or more by using the said 1st silica (D1) with a comparatively small particle diameter.
- the total content of the first and second silicas (D1) and (D2) is preferably 3% by weight or more, more preferably 5% by weight or more, Preferably it is 50 weight% or less, More preferably, it is 40 weight% or less.
- the total content of the first and second silicas (D1) and (D2) is not less than the above lower limit and not more than the above upper limit, the defoaming property and repelling properties of the photosensitive composition are further improved.
- the content (% by weight) of the first silica (D1) in 100% by weight of the photosensitive composition is C1, and the content of the second silica (D2) in 100% by weight of the photosensitive composition.
- the content ratio (C1 / C2) is preferably 0.1 or more, and preferably 1 or less.
- the content ratio (C1 / C2) is not less than the above lower limit and not more than the above upper limit, the defoaming property and repelling properties of the photosensitive composition are further improved.
- Polydimethylsiloxane (E) When the photosensitive composition which concerns on this invention contains polydimethylsiloxane (E), the defoaming property and repelling property of a photosensitive composition become favorable.
- the polydimethylsiloxane (E) is not particularly limited.
- the polydimethylsiloxane (E) is different from the first and second silicas (D1) and (D2).
- the polydimethylsiloxane (E) is blended separately from the first and second silicas (D1) and (D2).
- the said polydimethylsiloxane (E) only 1 type may be used and 2 or more types may be used together.
- the content of the polydimethylsiloxane (E) is preferably 0.1% by weight or more, more preferably 0.3% by weight or more, preferably 5% by weight or less. More preferably, it is 3% by weight or less.
- the content of the polydimethylsiloxane (E) is not less than the above lower limit and not more than the above upper limit, the defoaming property and repelling properties of the photosensitive composition are further improved.
- the photosensitive composition according to the present invention preferably contains a polymerizable monomer as a component different from the polymerizable polymer (A) having a carboxyl group.
- the photosensitive composition according to the present invention preferably contains both a polymerizable polymer (A) having a carboxyl group and a polymerizable monomer.
- the polymerizable monomer is polymerizable and can be polymerized.
- the polymerizable monomer is not particularly limited. As for the said polymerizable monomer, only 1 type may be used and 2 or more types may be used together.
- Examples of the polymerizable unsaturated group in the polymerizable monomer include a functional group having a polymerizable unsaturated double bond such as a (meth) acryloyl group and a vinyl ether group.
- a (meth) acryloyl group is preferable because the crosslinking density of the resist film can be increased.
- the polymerizable unsaturated group-containing monomer is preferably a compound having a (meth) acryloyl group.
- the compound having the (meth) acryloyl group include a di (meth) acrylate modified product of glycol such as ethylene glycol, methoxytetraethylene glycol, polyethylene glycol or propylene glycol, polyhydric alcohol, and ethylene oxide adduct of polyhydric alcohol.
- a polyhydric (meth) acrylate modified product of a propylene oxide adduct of a polyhydric alcohol a (meth) acrylate modified product of phenol, an ethylene oxide adduct of phenol or a propylene oxide adduct of phenol, glycerin diglycidyl ether or (Meth) acrylate modified products of glycidyl ether such as trimethylolpropane triglycidyl ether and melamine (meth) acrylate are exemplified.
- Examples of the polyhydric alcohol include hexanediol, trimethylolpropane, pentaerythritol, dipentaerythritol, and tris-hydroxyethyl isocyanurate.
- Examples of the (meth) acrylate of phenol include phenoxy (meth) acrylate and di (meth) acrylate modified products of bisphenol A.
- (Meth) acryloyl means acryloyl and methacryloyl.
- (Meth) acryl means acrylic and methacrylic.
- (Meth) acrylate means acrylate and methacrylate.
- the content of the polymerizable monomer is 100% by weight in total of the polymerizable monomer and the polymerizable polymer (A) having a carboxyl group.
- it is 5 weight% or more, Preferably it is 50 weight% or less.
- a photosensitive composition can fully be hardened as content of the said polymerizable monomer is more than the said minimum and below the said upper limit. Furthermore, the crosslink density of the resist film becomes appropriate, sufficient resolution can be obtained, and the resist film is hardly yellowed.
- the photosensitive composition preferably contains a compound having a cyclic ether skeleton. Further, the use of the compound having the cyclic ether skeleton also improves the curability of the photosensitive composition.
- Examples of the compound having a cyclic ether skeleton include heterocyclic epoxy resins such as bisphenol S type epoxy resin, diglycidyl phthalate resin, triglycidyl isocyanurate, bixylenol type epoxy resin, biphenol type epoxy resin, and tetraglycidyl xyleno.
- heterocyclic epoxy resins such as bisphenol S type epoxy resin, diglycidyl phthalate resin, triglycidyl isocyanurate, bixylenol type epoxy resin, biphenol type epoxy resin, and tetraglycidyl xyleno.
- Irethane resin bisphenol A type epoxy resin, hydrogenated bisphenol A type epoxy resin, bisphenol F type resin, brominated bisphenol A type epoxy resin, phenol novolac type epoxy resin, cresol novolac type epoxy resin, alicyclic epoxy resin, bisphenol A novolac type epoxy resin, chelate type epoxy resin, glyoxal type epoxy resin, amino group-containing epoxy resin, rubber-modified epoxy resin, dicyclopentadiene phenolic Click type epoxy resins, silicone-modified epoxy resin and ⁇ - caprolactone-modified epoxy resin.
- skeleton only 1 type may be used and 2 or more types may be used together.
- the compound having a cyclic ether skeleton reacts with the carboxyl group of the polymerizable polymer (A) to act to cure the photosensitive composition.
- the content of the compound having a cyclic ether skeleton is preferably 0.1 parts by weight or more, more preferably 1 part by weight or more, preferably 50 parts by weight or less, based on 100 parts by weight of the polymerizable polymer (A).
- the amount is preferably 30 parts by weight or less.
- the photosensitive composition according to the present invention preferably contains an antioxidant.
- the antioxidant preferably has a Lewis basic site.
- the antioxidant is at least one selected from the group consisting of phenolic antioxidants, phosphorus antioxidants, and amine antioxidants. Is preferred.
- the antioxidant is preferably a phenolic antioxidant. That is, the photosensitive composition according to the present invention preferably contains a phenolic antioxidant.
- the antifoaming property and repellency characteristics of the photosensitive composition are compared with the case of using an antioxidant other than the phenolic antioxidant. Both are even better.
- IRGANOX 1010 Commercially available products of the above-mentioned phenolic antioxidants include IRGANOX 1010, IRGANOX 1035, IRGANOX 1076, IRGANOX 1135, IRGANOX 245, IRGANOX 259, and IRGANOX 295 (all of which are manufactured by Ciba Japan), ADK STAB AO-30, ADK STAB AO-40, ADK STAB AO-50, ADK STAB AO-60, ADK STAB AO-70, ADK STAB AO-80, ADK STAB AO-90, and ADK STAB AO-330 (all of which are manufactured by ADEKA), Sumilizer GA-80, and Sumizer MDP-S, Sumilizer BBM-S, Sumilizer GM, Sumilizer GS (F), and S milizer GP (all of which are manufactured by Sumitomo Chemical Co., Ltd.), HOSTANOX O10, HOSTANOX O16, HOSTANO
- Examples of the phosphorus antioxidant include cyclohexylphosphine and triphenylphosphine.
- Commercially available products of the above-mentioned phosphoric antioxidants include Adeastab PEP-4C, Adeastab PEP-8, Adeastab PEP-24G, Adeastab PEP-36, Adeastab HP-10, Adeastab 2112, Adeastab 260, Adeastab 522A, Adeastab 1178, 1500, Adeastab C, Adeastab 135A, Adeastab 3010, and Adeastab TPP (all of which are made by ADEKA), Sandstub P-EPQ, and Hostanox PAR24 (all of which are made by Clariant), and JP-312L, JP -318-0, JPM-308, JPM-313, JPP-613M, JPP-31, JPP-2000PT, and JPH-3800 Re also be mentioned Johoku Chemical Industry Co., Ltd.), and the like.
- amine antioxidant examples include triethylamine, dicyandiamide, melamine, ethyldiamino-S-triazine, 2,4-diamino-S-triazine, 2,4-diamino-6-tolyl-S-triazine, 2,4- And diamino-6-xylyl-S-triazine and quaternary ammonium salt derivatives.
- the content of the antioxidant is preferably 0.1 parts by weight or more, more preferably 5 parts by weight or more, and preferably 30 parts by weight or less with respect to 100 parts by weight of the polymerizable polymer (A) having a carboxyl group. More preferably, it is 15 parts by weight or less.
- the content of the antioxidant is not less than the above lower limit and not more than the upper limit, a more excellent resist film can be formed by heat yellowing.
- the photosensitive composition according to the present invention may contain a solvent.
- the dipole moment of the solvent is preferably 1 Debye or more. By using a solvent having a dipole moment of 1 Debye or more, a photosensitive composition excellent in pot life can be provided.
- the photosensitive composition according to the present invention includes a colorant, a filler, a curing agent, a curing accelerator, a release agent, a surface treatment agent, a flame retardant, a viscosity modifier, a dispersant, a dispersion aid, and a surface modification.
- An agent, a plasticizer, an antibacterial agent, an antifungal agent, a leveling agent, a stabilizer, a coupling agent, an anti-sagging agent, or a phosphor may be included.
- the photosensitive composition according to the present invention has a first liquid and a second liquid, and the two-liquid mixed photosensitive composition used by mixing the first and second liquids. It may be.
- the photosensitive composition according to the present invention may be a one-component type photosensitive composition having only the first liquid.
- the photosensitive composition according to the present invention includes a one-component type photosensitive composition and a two-component mixed type photosensitive composition such as a two-component mixed type.
- a polymerizable polymer (A), a photopolymerization initiator (B), titanium oxide (C), first silica (D1), and second silica (D2). ) And polydimethylsiloxane (E) are contained in at least one of the first liquid and the second liquid, respectively.
- the polymerizable monomer, the compound having the cyclic ether skeleton, and the antioxidant are included, the polymerizable monomer, the compound having the cyclic ether skeleton, and the antioxidant are respectively It is contained in at least one of the first liquid and the second liquid.
- the mixture in which the first and second liquids are mixed is a photosensitive composition, which is a polymerizable polymer (A), a photopolymerization initiator (B), titanium oxide (C), and first silica (D1). ), Second silica (D2), and polydimethylsiloxane (E).
- A polymerizable polymer
- B photopolymerization initiator
- C titanium oxide
- D1 first silica
- D2 Second silica
- E polydimethylsiloxane
- the photosensitive composition according to the present invention can be prepared, for example, by stirring and mixing the ingredients and then uniformly mixing with three rolls.
- Examples of the light source used for curing the photosensitive composition include an irradiation device that emits active energy rays such as ultraviolet rays or visible rays.
- Examples of the light source include an ultrahigh pressure mercury lamp, a deep UV lamp, a high pressure mercury lamp, a low pressure mercury lamp, a metal halide lamp, and an excimer laser. These light sources are appropriately selected according to the photosensitive wavelength of the constituent components of the photosensitive composition.
- the irradiation energy of light is appropriately selected depending on the desired film thickness or the constituent components of the photosensitive composition.
- the irradiation energy of light is generally in the range of 10 to 3000 mJ / cm 2 .
- the photosensitive composition concerning this invention is used suitably in order to form the resist film of an LED device, and is used more suitably in order to form a soldering resist film.
- the photosensitive composition according to the present invention is preferably a resist composition, and is preferably a solder resist composition.
- the printed wiring board according to the present invention includes a printed wiring board body having a circuit on the surface, and a solder resist film laminated on the surface of the printed wiring board body on which the circuit is provided.
- the solder resist film is formed of the photosensitive composition according to the present invention.
- FIG. 1 schematically shows an example of an LED device having a solder resist film formed using a photosensitive composition according to an embodiment of the present invention in a partially cutaway front sectional view.
- a resist film 3 made of a photosensitive composition is laminated on an upper surface 2a of a substrate 2.
- the resist film 3 is a pattern film. Therefore, the resist film 3 is not formed in a part of the upper surface 2 a of the substrate 2.
- Electrodes 4a and 4b are provided on the upper surface 2a of the substrate 2 where the resist film 3 is not formed.
- the substrate 2 is preferably a printed wiring board body.
- the LED chip 7 is laminated on the upper surface 3 a of the resist film 3.
- An LED chip 7 is laminated on the substrate 2 via the resist film 3.
- Terminals 8 a and 8 b are provided on the outer peripheral edge of the lower surface 7 a of the LED chip 7.
- the terminals 8a and 8b are electrically connected to the electrodes 4a and 4b by the solder 9a and 9b. By this electrical connection, power can be supplied to the LED chip 7.
- Acrylic polymer 1 (polymer having a carboxyl group, acrylic polymer 1 obtained in Synthesis Example 1 below)
- Glycidyl acrylate was added in such an amount that the molar ratio of the total amount of all the monomer units of the obtained resin was 10 and then heated at 100 ° C. for 30 hours using tetrabutylammonium bromide as a catalyst. The group was subjected to an addition reaction. After cooling, it was taken out from the flask to obtain a solution containing 50 wt% (nonvolatile content) of a carboxyl group-containing resin having a solid content acid value of 60 mg KOH / g, a weight average molecular weight of 15000, and a double bond equivalent of 1000.
- this solution is referred to as acrylic polymer 1.
- Example 1 15 parts by weight of the acrylic polymer 1 obtained in Synthesis Example 1, 5 parts by weight of DPHA (dipentaerythritol hexaacrylate), and 2 parts by weight of TPO (a photopolymerization initiator that is a photoradical generator, manufactured by BASF Japan) 8 parts by weight of 828 (bisphenol A epoxy resin, manufactured by Mitsubishi Chemical Corporation), 40 parts by weight of CR-50 (titanium oxide, manufactured by Ishihara Sangyo Co., Ltd.), and R202 (silica, manufactured by Nippon Aerosil Co., Ltd., primary particle size: 14 nm) ) 3 parts by weight, 15 parts by weight of VX-S (silica, manufactured by Tatsumori Co., Ltd., primary particle size 4 ⁇ m), and 1 part by weight of KS-7710 (compound type silicone oil, polydimethylsiloxane, manufactured by Shin-Etsu Chemical Co., Ltd.) , And 30 parts by weight of ethyl carbitol
- Example 2 to 10 and Comparative Examples 1 to 3 A resist material was obtained in the same manner as in Example 1 except that the type and blending amount of the material used were changed as shown in Table 1 below.
- repellency the distance from the edge of the printed area to the outermost edge of the resist material layer extending outward, or from the edge of the printed area to the resist material droplet located outside. The distance was defined as a repel distance.
- the repellency characteristics were determined based on the following three criteria.
- Repel distance is less than 10 mm
- Repel distance is 10 mm or more and less than 20 mm
- Repel distance is 20 mm or more
- the viscosity ratio ( ⁇ 1 / ⁇ 10) is based on the viscosity ⁇ 1 (mPa ⁇ s) at 25 ° C. at a shear rate of 1 rpm and the viscosity ⁇ 10 (mPa ⁇ s) at 25 ° C. at a shear rate of 10 rpm. Indicates the ratio.
- the content ratio (C1 / C2) is the content (% by weight) of the first silica in 100% by weight of the photosensitive composition C1 in 100% by weight of the photosensitive composition. The ratio with respect to content (weight%) C2 of 2nd silica is shown.
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Abstract
Description
上記重合性重合体(A)はカルボキシル基を有する。カルボキシル基を有する重合性重合体(A)は重合性を有し、重合可能である。上記重合性重合体(A)がカルボキシル基を有することで、感光性組成物の現像性が良好になる。上記重合性重合体(A)としては、例えば、カルボキシル基を有するアクリル樹脂、カルボキシル基を有するエポキシ樹脂及びカルボキシル基を有するオレフィン樹脂が挙げられる。なお、「樹脂」は、固形樹脂に限定されず、液状樹脂及びオリゴマーも含む。
本発明に係る感光性組成物は、光重合開始剤(B)を含むので、光の照射により感光性組成物を硬化させることができる。光重合開始剤(B)は特に限定されない。光重合開始剤(B)は、1種のみが用いられてもよく、2種以上が併用されてもよい。
本発明に係る感光性組成物は、酸化チタンを含むので、反射率が高いレジスト膜などの硬化物膜を形成できる。本発明に係る感光性組成物に含まれている酸化チタン(C)は特に限定されない。酸化チタン(C)は、1種のみが用いられてもよく、2種以上が併用されてもよい。
本発明に係る感光性組成物は、シリカ(D)として、第1のシリカ(D1)と、第2のシリカ(D2)とを含む。上記第1のシリカ(D1)の一次粒径は5nm以上、100nm以下である。上記第2のシリカ(D2)の一次粒径は0.5μm以上、10μm以下である。上記第1,第2のシリカ(D1),(D2)はいずれも、シリカ粒子である。上記第1,第2のシリカ(D1),(D2)は、後述するポリジメチルシロキサン(E)とは異なる。本発明に係る感光性組成物では、上記第1,第2のシリカ(D1),(D2)は、上記ポリジメチルシロキサン(E)とは別に配合されている。
本発明に係る感光性組成物が、ポリジメチルシロキサン(E)を含むことにより、感光性組成物の消泡性及びハジキ特性が良好になる。上記ポリジメチルシロキサン(E)は特に限定されない。上記ポリジメチルシロキサン(E)は、上記第1,第2のシリカ(D1),(D2)とは異なる。本発明に係る感光性組成物では、上記ポリジメチルシロキサン(E)は、上記第1,第2のシリカ(D1),(D2)とは別に配合されている。上記ポリジメチルシロキサン(E)は、1種のみが用いられてもよく、2種以上が併用されてもよい。
硬化性をより一層高めるために、本発明に係る感光性組成物は、カルボキシル基を有する重合性重合体(A)とは異なる成分として、重合性単量体を含むことが好ましい。本発明に係る感光性組成物は、カルボキシル基を有する重合性重合体(A)と重合性単量体との双方を含むことが好ましい。上記重合性単量体は重合性を有し、重合可能である。上記重合性単量体は特に限定されない。上記重合性単量体は、1種のみが用いられてもよく、2種以上が併用されてもよい。
本発明に係る感光性組成物は、LEDデバイスのレジスト膜を形成するために好適に用いられ、ソルダーレジスト膜を形成するためにより好適に用いられる。本発明に係る感光性組成物は、レジスト組成物であることが好ましく、ソルダーレジスト組成物であることが好ましい。
温度計、攪拌機、滴下ロート及び還流冷却器を備えたフラスコに、溶剤であるエチルカルビトールアセテートと、触媒であるアゾビスイソブチロニトリルとを入れ、窒素雰囲気下で80℃に加熱し、メタクリル酸とメチルメタクリレートとを30:70のモル比で混合したモノマーを2時間かけて滴下した。滴下後、1時間攪拌し、温度を120℃に上げた。その後、冷却した。得られた樹脂の全てのモノマー単位の総量のモル量に対するモル比が10となる量のグリシジルアクリレートを加え、触媒として臭化テトラブチルアンモニウムを用い100℃で30時間加熱して、グリシジルアクリレートとカルボキシル基とを付加反応させた。冷却後、フラスコから取り出して、固形分酸価60mgKOH/g、重量平均分子量15000、二重結合当量1000のカルボキシル基含有樹脂を50重量%(不揮発分)含む溶液を得た。以下、この溶液をアクリルポリマー1と呼ぶ。
3)TPO(光ラジカル発生剤である光重合開始剤、BASFジャパン社製)
4)828(ビスフェノールA型エポキシ樹脂、三菱化学社製、比重1.2)
5)CR-50(酸化チタン、石原産業社製、塩素法により製造されたルチル型酸化チタン)
6)R202(シリカ、日本アエロジル社製、一次粒径14nm)
7)RX50(シリカ、日本アエロジル社製、一次粒径40nm)
8)5X(シリカ、龍森社製、一次粒径1.5μm)
9)VX-S(シリカ、龍森社製、一次粒径4μm)
10)AA(シリカ、龍森社製、一次粒径6μm)
11)KF-96(ポリジメチルシロキサン、信越化学工業社製)
12)KS-7710(コンパウンド型シリコーンオイル、ポリジメチルシロキサン、信越化学工業社製)
13)IRGANOX1010(フェノール系酸化防止剤、チバジャパン社製)
14)IRGAFOS168(リン系酸化防止剤、チバジャパン社製)
15)エチルカルビトールアセテート(溶剤、双極子モーメント1Debye以上、比重1.0)
合成例1で得られたアクリルポリマー1を15重量部と、DPHA(ジペンタエリスリトールヘキサアクリレート)5重量部と、TPO(光ラジカル発生剤である光重合開始剤、BASFジャパン社製)2重量部と、828(ビスフェノールA型エポキシ樹脂、三菱化学社製)8重量部と、CR-50(酸化チタン、石原産業社製)40重量部と、R202(シリカ、日本アエロジル社製、一次粒径14nm)3重量部と、VX-S(シリカ、龍森社製、一次粒径4μm)15重量部と、KS-7710(コンパウンド型シリコーンオイル、ポリジメチルシロキサン、信越化学工業社製)1重量部と、エチルカルビトールアセテート30重量部とを配合し、混合機(練太郎SP-500、シンキー社製)にて3分間混合した後、3本ロールにて混合し、混合物を得た。その後、SP-500を用いて、得られた混合物を3分間脱泡することにより、感光性組成物であるレジスト材料を得た。
使用した材料の種類及び配合量を下記の表1に示すように変更したこと以外は、実施例1と同様にして、レジスト材料を得た。
(1)粘度
粘度計(東機産業社製「TVE22L」)を用いて、得られたレジスト材料のせん断速度1rpmにおける25℃での粘度η1(mPa・s)と、せん断速度10rpmにおける25℃での粘度をη10(mPa・s)とを測定した。
表面に銅箔が貼り付けられている100mm×100mmのFR-4基板を用意した。また、得られたレジスト材料を50回手動で攪拌した。撹拌直後のレジスト材料を、上記FR-4基板の銅箔が貼り付けられている面に、スクリーン印刷により塗布して、レジスト材料層を形成した。その後、室温(25℃)で1分間放置した後、印刷された100mm×100mmの領域のレジスト材料層中において、直径0.5mm以上の泡が存在するか否かを目視により観察した。泡の個数に応じて、レジスト材料(感光性組成物)の消泡性を下記の基準で判定した。
○○:泡が確認されない
○:泡が1~20個確認された
×:泡が21個以上確認された
上記(2)消泡性の評価に用いたFR-4基板の銅箔が貼り付けられている面に、離型フィルムであるPETフィルムを貼り付けた。また、得られたレジスト材料を50回手動で攪拌した。撹拌直後のレジスト材料を、上記FR-4基板上のPETフィルム上に、スクリーン印刷により印刷して、レジスト材料層を形成した。印刷後、室温(25℃)で1時間放置し、レジスト材料層のPETフィルムの表面に対するハジキの状態を目視により確認した。すなわち、印刷領域の端縁から、外側に拡がっている場合、又は端縁から外側にレジスト材料の液滴が分離している場合、ハジキが生じているとみなした。このハジキの状態について、上記印刷領域の端縁から外側に拡がっているレジスト材料層の最外側端縁までの距離、又は上記印刷領域の端縁から外側に位置しているレジスト材料液滴までの距離をハジキ距離とした。ハジキ特性を、以下の3段階の基準で判定した。
○○:ハジキ距離が10mm未満
○:ハジキ距離が10mm以上、20mm未満
×:ハジキ距離が20mm以上
2…基板
2a…上面
3…レジスト膜
3a…上面
4a,4b…電極
7…LEDチップ
7a…下面
8a,8b…端子
9a,9b…はんだ
Claims (6)
- カルボキシル基を有する重合性重合体と、光重合開始剤と、酸化チタンと、第1のシリカと、第2のシリカと、ポリジメチルシロキサンとを含み、
前記第1のシリカの一次粒径が5nm以上、100nm以下であり、
前記第2のシリカの一次粒径が0.5μm以上、10μm以下であり、
せん断速度1rpmにおける25℃での粘度(mPa・s)をη1とし、せん断速度10rpmにおける25℃での粘度(mPa・s)をη10としたときに、粘度比(η1/η10)が1.1以上である、感光性組成物。 - フェノール系酸化防止剤をさらに含む、請求項1に記載の感光性組成物。
- 感光性組成物100重量%中の前記第1のシリカの含有量(重量%)をC1とし、感光性組成物100重量%中の前記第2のシリカの含有量(重量%)をC2としたときに、含有量比(C1/C2)が0.1以上、1以下である、請求項1に記載の感光性組成物。
- フェノール系酸化防止剤をさらに含み、
感光性組成物100重量%中の前記第1のシリカの含有量(重量%)をC1とし、感光性組成物100重量%中の前記第2のシリカの含有量(重量%)をC2としたときに、含有量比(C1/C2)が0.1以上、1以下である、請求項1に記載の感光性組成物。 - ソルダーレジスト組成物である、請求項1~4のいずれか1項に記載の感光性組成物。
- 回路を表面に有するプリント配線板本体と、該プリント配線板本体の回路が設けられた表面に積層されたソルダーレジスト膜とを備え、前記ソルダーレジスト膜が請求項1~4のいずれか1項に記載の感光性組成物を用いて形成されている、プリント配線板。
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| KR20160115718A (ko) * | 2015-03-25 | 2016-10-06 | 세키스이가가쿠 고교가부시키가이샤 | 2액 혼합형의 제1, 제2 액 및 프린트 배선판의 제조 방법 |
| KR102625987B1 (ko) * | 2015-03-25 | 2024-01-18 | 다이요 홀딩스 가부시키가이샤 | 2액 혼합형의 제1, 제2 액 및 프린트 배선판의 제조 방법 |
| JP6947492B2 (ja) * | 2015-03-25 | 2021-10-13 | 積水化学工業株式会社 | 2液混合型の第1,第2の液及びプリント配線板の製造方法 |
| JP6618829B2 (ja) * | 2015-03-25 | 2019-12-11 | 積水化学工業株式会社 | 2液混合型の第1,第2の液及びプリント配線板の製造方法 |
| CN110800118B (zh) * | 2017-06-29 | 2022-10-28 | 京瓷株式会社 | 电路基板以及具备该电路基板的发光装置 |
| JP7405803B2 (ja) * | 2021-08-27 | 2023-12-26 | 株式会社タムラ製作所 | 感光性樹脂組成物、感光性樹脂組成物の光硬化物及び感光性樹脂組成物を塗布したプリント配線板 |
| JP7545447B2 (ja) * | 2021-09-24 | 2024-09-04 | 株式会社タムラ製作所 | 感光性樹脂組成物、感光性樹脂組成物の光硬化物及び感光性樹脂組成物を塗布したプリント配線板 |
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|---|---|---|---|---|
| WO2017159190A1 (ja) * | 2016-03-14 | 2017-09-21 | 富士フイルム株式会社 | 組成物、膜、硬化膜、光学センサおよび膜の製造方法 |
| JPWO2017159190A1 (ja) * | 2016-03-14 | 2018-12-27 | 富士フイルム株式会社 | 組成物、膜、硬化膜、光学センサおよび膜の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012184389A (ja) | 2012-09-27 |
| TW201205195A (en) | 2012-02-01 |
| CN102754027B (zh) | 2014-06-25 |
| JP4762374B1 (ja) | 2011-08-31 |
| TWI418936B (zh) | 2013-12-11 |
| CN102754027A (zh) | 2012-10-24 |
| JP2012185463A (ja) | 2012-09-27 |
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