WO2022138012A1 - 重合性組成物、及び素子が搭載された基板の製造方法 - Google Patents
重合性組成物、及び素子が搭載された基板の製造方法 Download PDFInfo
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- WO2022138012A1 WO2022138012A1 PCT/JP2021/043797 JP2021043797W WO2022138012A1 WO 2022138012 A1 WO2022138012 A1 WO 2022138012A1 JP 2021043797 W JP2021043797 W JP 2021043797W WO 2022138012 A1 WO2022138012 A1 WO 2022138012A1
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- polymerizable composition
- substrate
- sealing
- sealant
- meth
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Classifications
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/36—Amides or imides
- C08F222/38—Amides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
Definitions
- the present invention regulates a region where the sealant can flow in the sealing step of sealing at least a part of the element provided on the substrate with the sealant, and is removed from the substrate after the sealing step.
- the present invention relates to a polymerizable composition used for forming a sealant-regulating material, and a method for manufacturing a substrate on which an element using the polymerizable composition is mounted.
- the elements When various elements are mounted on a substrate, the elements are often completely sealed with resin or partially sealed with resin by so-called underfill.
- the resin as a sealing material is usually supplied in the vicinity of the device in a molten state or a solution state.
- a liquid resin material for sealing it is difficult to regulate the region where the liquid resin material flows.
- Patent Document 1 in order to prevent the encapsulating material from invading the ball grid array portion of the element provided on the bottom surface where the element is in contact with the substrate, the outer periphery of the element is in contact with the side surface of the element.
- a method of forming a dam agent that covers a portion has been proposed.
- the dam agent is removed or the element to which the dam agent is adhered is peeled off from the substrate to perform so-called rework.
- a dam agent is provided on the solder coat provided on the substrate. In this case, since the solder coat is melted by heating the substrate to a temperature equal to or higher than the melting point of the solder, the dam agent and the element to which the dam agent is fixed can be easily peeled off from the substrate.
- the dam agent itself does not contribute to improving the performance of the device. Therefore, there are many demands for peeling the dam agent from the substrate after sealing the element, even when reworking is not performed. For example, when mounting elements on a substrate while integrating them at high density, it is easy to highly integrate the elements on the substrate by removing the dam agent after sealing the elements.
- Patent Document 2 the element existing on the main surface of the substrate provided with the dam agent is sealed with a sealing resin, and the dam agent is removed so as not to adversely affect the subsequent processes such as the cutting process.
- the technology to be used is disclosed.
- approaches such as peeling by lowering the adhesion by curing the material of the dam agent as a thermosetting material, or by dissolving it, etc. have been shown. There is.
- Patent Document 1 requires a complicated process of accurately forming a solder coat at a position where a dam agent is provided. Further, in the method described in Patent Document 1, there is a concern that the molten solder derived from the solder coat may get wet and spread on the substrate after the dam agent or the element to which the dam agent is adhered is peeled off. Under these circumstances, there is room for development of a material that can form a dam agent that can be easily removed from the substrate without using melting of the solder.
- the present invention has been made in view of the above problems, and regulates a region where the sealant can flow in the sealing step of sealing at least a part of the elements provided on the substrate with the sealant. Moreover, it is used to form a sealant-regulating material that is removed from the substrate after the sealing step, and it is possible to form a sealant-regulating material that can be easily removed from the substrate without using melting of solder. It is an object of the present invention to provide a polymerizable composition and a method for producing a substrate on which an element using the polymerizable composition is mounted.
- the present inventors have prepared a polymerizable composition containing a water-soluble polymer, a nitrogen-containing monofunctional (meth) acrylic monomer, and a polymerization initiator by using a sealant on at least a part of an element provided on a substrate.
- the above-mentioned problems are solved by regulating the region where the sealant can flow in the sealing step of sealing and using it for forming a sealing agent-regulating material that is removed from the substrate after the sealing step.
- the present invention provides the following.
- the first aspect of the present invention regulates a region where the sealant can flow in the sealing step of sealing at least a part of the element provided on the substrate with the sealant, and after the sealing step.
- a second aspect of the present invention is a method for manufacturing a substrate on which an element is mounted.
- the step of injecting a sealant into the above-mentioned region and sealing at least a part of the element It comprises the steps of sealing at least a portion of the device followed by the step of removing the encapsulant restricting material.
- the region where the sealant can flow is restricted in the sealing step of sealing at least a part of the element provided on the substrate with the sealant, and the region from the substrate after the sealing step is restricted.
- a polymerizable composition used for forming a sealant-regulated material to be removed and capable of forming a sealant-regulated material that can be easily removed from a substrate without utilizing melting of solder, and the polymerizable composition It is possible to provide a method for manufacturing a substrate on which an element using an object is mounted.
- the polymerizable composition is used to form a sealing control material.
- the sealing control material regulates the region where the sealing agent can flow in the sealing step of sealing at least a part of the elements provided on the substrate with the sealing agent, and also from the substrate after the sealing step. Will be removed.
- the region in which the flow of the encapsulant is restricted includes not only a two-dimensional region on the main surface of the substrate but also a three-dimensional region that is a part of the space on the main surface of the substrate. For example, by adjusting the dimensions of the encapsulant-regulating material in the thickness direction of the substrate, the flow range of the encapsulant in the thickness direction of the substrate can be regulated.
- the encapsulant-regulated material is removed from the substrate after the encapsulation process.
- the removal method is not particularly limited, but a method using water is preferable. A specific removal method will be described later with respect to a method for manufacturing a substrate on which the element is mounted.
- the polymerizable composition contains a water-soluble polymer, a nitrogen-containing monofunctional (meth) acrylic monomer, and a polymerization initiator.
- a sealant-regulating material is formed by molding such a polymerizable composition into a desired shape and then polymerizing the composition.
- (meth) acrylic means both acrylic and methacrylic
- (meth) acryloyl means both acryloyl and methacrylic
- (meth) acrylate Means both acrylate and methacrylate.
- the viscosity of the polymerizable composition measured by an E-type viscometer at 25 ° C. is preferably 1,000 cP or more and 300,000 cP or less, and more preferably 5,000 cP or more and 200,000 cP or less.
- the spray application of the polymerizable composition is easy, and the encapsulant-regulating material having a preferable size and shape is accurately formed at a predetermined position on the substrate.
- Cheap is preferably 1,000 cP or more and 300,000 cP or less, and more preferably 5,000 cP or more and 200,000 cP or less.
- the polymerizable composition contains a water-soluble polymer. Therefore, the encapsulant-regulating material formed using the polymerizable composition exhibits high water solubility.
- Water-soluble means that 0.5 g or more of a solute (water-soluble polymer) is dissolved in 100 g of water at 25 ° C.
- the water-soluble polymer examples include vinyl-based polymers, cellulosic-based polymers, polyglycerin, and water-soluble nylon.
- the vinyl-based tree polymer is not particularly limited as long as it is a homopolymer or a copolymer of a monomer having a vinyl group and is a water-soluble polymer.
- the vinyl polymer include polyvinyl alcohol, polyvinyl acetal (including vinyl acetate copolymer), polyvinylpyrrolidone, polyacrylamide, poly (N-alkylacrylamide), polyallylamine, poly (N-alkylallylamine), and partially amidated poly.
- allylamine examples thereof include allylamine, poly (diallylamine), allylamine / diallylamine copolymer, polyacrylic acid, polyvinyl alcohol polyacrylic acid block copolymer, and polyvinyl alcohol polyacrylic acid ester block copolymer.
- the cellulosic polymer is not particularly limited as long as it is a water-soluble cellulose or a cellulosic derivative.
- cellulosic polymers include cellulose; alkyl celluloses such as methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, n-butyl cellulose, tert-butyl cellulose, and n-hexyl cellulose; hydroxymethyl cellulose, hydroxyethyl cellulose. , Hydroxypropyl cellulose, and hydroxyalkyl cellulose such as hydroxybutyl cellulose; cellulose esters such as cellulose acetate, cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose acetate butyrate; carboxymethyl cellulose, carboxyethyl cellulose, and carboxypropyl.
- alkyl celluloses such as methyl cellulose, ethyl cellulose, n-propyl cellulose, isopropyl cellulose, n-butyl cellulose, tert-butyl cellulose, and n-hexyl
- Carboxyalkyl cellulose such as cellulose; examples thereof include cellulose derivatives such as nitrocellulose, aldehyde cellulose, dialdehyde cellulose, and sulfonated cellulose. These can be used alone or in combination of two or more.
- water-soluble polymers it has excellent heat resistance, it is easy to obtain a polymerizable composition having a viscosity suitable for spray coating, and it has excellent compatibility with a nitrogen-containing monofunctional (meth) acrylic monomer. Therefore, a cellol-based polymer is preferable, hydroxyalkyl cellulose is more preferable, and hydroxypropyl cellulose is particularly preferable.
- the weight average molecular weight of the water-soluble polymer is preferably 15,000 or more and 300,000 or less, and more preferably 20,000 or more and 200,000 or less. By using such a water-soluble polymer having a weight average molecular weight, the film forming property of the polymerizable composition is likely to be improved.
- the weight loss rate of the water-soluble polymer when the temperature is raised from room temperature to 200 ° C. is preferably 20% or less, more preferably 10% or less.
- the shape of the obtained encapsulant-regulating material can be easily stabilized even in the encapsulation step (for example, the encapsulation step at about 200 ° C. using an epoxy resin).
- the conditions for thermogravimetric measurement here, the following contents are typically adopted.
- TG / DTA device differentiated thermal-thermogravimetric simultaneous measurement device, manufactured by Hitachi High-Tech Science Co., Ltd., TD / DTA6200R
- Temperature rise rate 10 °C / min
- Atmosphere Air (flow rate 200mL / min)
- the content of the water-soluble polymer in the polymerizable composition is preferably 1% by mass or more and 90% by mass or less, more preferably 3% by mass or more and 70% by mass or less, and 5% by mass with respect to the total mass of the polymerizable composition. More preferably, it is 50% by mass or less.
- the polymerizable composition contains a nitrogen-containing monofunctional (meth) acrylic monomer.
- the nitrogen-containing monofunctional (meth) acrylic monomer is liquid in the uncured state. Therefore, the nitrogen-containing monofunctional (meth) acrylic monomer acts as a reactive diluent in the polymerizable composition.
- Specific embodiments of the "nitrogen-containing monofunctional acrylic monomer” include ( ⁇ ) monofunctional (meth) acrylamide monomer, ( ⁇ ) (meth) acrylic acid, and an alcohol containing a nitrogen atom in its structure. Contains both condensates (nitrogen-containing (meth) acrylic acid ester monomers). Further, the nitrogen-containing monofunctional (meth) acrylic monomer is polymerized to give a water-soluble (meth) acrylic polymer. Therefore, the encapsulant-regulating material formed by using the polymerizable composition is excellent in water solubility.
- the calculated value of the glass transition temperature as a homopolymer for the nitrogen-containing monofunctional (meth) acrylic monomer is 100 ° C. or higher. It is preferable to have it.
- the glass transition temperature as a homopolymer can be calculated by the method of Bicellano described in Preparation of polymers, Marcel Dekker Inc, New York (1993).
- a (meth) acrylamide derivative represented by the following formula (a1) is also preferable because it has a low viscosity and gives a polymer having excellent heat resistance and water solubility.
- R 1 is a hydrogen atom or a methyl group
- X is a methylene group, -O-, -S-, or -NR 2-
- R 2 is a hydrogen atom or the number of carbon atoms. It is an alkyl group of 1 or more and 4 or less
- p and q are independently integers of 0 or more and 6 or less
- p + q is 1 or more and 6 or less.
- p is 1 in that the (meth) acrylamide derivative represented by the formula (a1) can be easily obtained and synthesized, and a (meth) acrylic resin having good water solubility is provided. Moreover, it is preferable that q is 1. That is, it is preferable that the cyclic group in the formula (1) is a 6-membered ring.
- X in the formula (a1) is a methylene group, -O-, -S-, or -NR 2- , and R 2 is a hydrogen atom or an alkyl group having 1 or more and 4 or less carbon atoms.
- R 2 is a hydrogen atom or an alkyl group having 1 or more and 4 or less carbon atoms.
- X is -O- in that the (meth) acrylamide derivative represented by the formula (a1) can be easily obtained and synthesized, and a (meth) acrylic resin having good water solubility is provided. It is preferable to have it.
- the following compounds are preferable.
- the following compounds are more preferable.
- the nitrogen-containing (meth) acrylic acid ester monomer is a compound having a structure in which (meth) acrylic acid and an alcohol compound containing a nitrogen atom in the structure are condensed.
- the alcohol compound containing a nitrogen atom in its structure has only one hydroxyl group in its structure.
- the compound represented by the following formula (a2) is preferable as the nitrogen-containing (meth) acrylic acid ester monomer because it has a low viscosity and gives a polymer excellent in heat resistance and water solubility.
- R 3 is a hydrogen atom or a methyl group
- R 4 is an alkylene group having 1 or more and 5 or less carbon atoms
- R 5 and R 6 are independent hydrogen atoms or carbon atoms, respectively. It is an alkyl group of 1 or more and 5 or less.
- R 5 and R 6 may be bonded to each other to form a ring of up to 11-membered rings.
- R 4 is preferably an alkylene group having 1 or more and 3 or less carbon atoms, and R 5 and R are preferable.
- 6 is preferably an alkyl group having 1 or more and 5 or less carbon atoms. Further, it is preferable that both R 5 and R 6 are a methyl group or an ethyl group.
- the content of the nitrogen-containing monofunctional (meth) acrylic monomer in the polymerizable composition is preferably 10% by mass or more and 99% by mass or less, preferably 30% by mass or more and 97% by mass or less, based on the total mass of the polymerizable composition. It is more preferably 50% by mass or more and 95% by mass or less.
- the polymerizable composition contains a polymerization initiator in order to polymerize the above-mentioned nitrogen-containing monofunctional (meth) acrylic monomer.
- a radical polymerization initiator is usually used as the polymerization initiator.
- the polymerization initiator may be a photopolymerization initiator that polymerizes a nitrogen-containing monofunctional (meth) acrylic monomer by exposure, or a thermal polymerization initiator that polymerizes a nitrogen-containing monofunctional (meth) acrylic monomer by heating. May be good.
- a photopolymerization initiator is preferable as the initiator from the viewpoint that the polymerizable composition can be easily cured in a short time.
- Examples of the photopolymerization initiator include Omnirad 651, Omnirad 184, Omnirad 1173, Omnirad 2959, Omnirad 127, Omnirad 907, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad 369, Omnirad Polymerization initiators, acylphosphine oxide-based photopolymerization initiators such as Omnirad TPO H and Omnirad 819 (all manufactured by IGM Resins B.V.), and oxime esters such as Irgacure OXE01 and Irgacure OXE02 (all manufactured by BASF). Examples include system photopolymerization initiators.
- an alkylphenone-based photopolymerization initiator is preferable, and Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone) is more preferable in terms of compatibility with a nitrogen-containing monofunctional (meth) acrylic monomer.
- photopolymerization initiator examples include 1-hydroxycyclohexylphenylketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1- [4- (2-hydroxyethoxy) phenyl] -2-. Hydroxy-2-methyl-1-propane-1-one, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropane-1-one, 1- (4-dodecylphenyl) -2-hydroxy-2 -Methylpropan-1-one, 2,2-dimethoxy-1,2-diphenylethane-1-one, bis (4-dimethylaminophenyl) ketone, 2-methyl-1- [4- (methylthio) phenyl]- 2-Morphorinopropane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butane-1-one, 1,2-octanedione, 1- [4- (phenylthio) Phen
- thermal polymerization initiator examples include ketone peroxide (methyl ethyl ketone peroxide, cyclohexanone peroxide, etc.), peroxyketal (2,2-bis (tert-butylperoxy) butane and 1,1-bis (tert-butylperoxy).
- Cyclohexane, etc. hydroperoxide (tert-butylhydroperoxide, cumenehydroperoxide, etc.), dialkyl peroxide (di-tert-butyl peroxide (perbutyl (registered trademark) D (manufactured by Nichiyu Co., Ltd.)), and Di-tert-hexyl peroxide (perhexil (registered trademark) D (manufactured by Nichiyu Co., Ltd.), etc.), diacyl peroxide (isobutyryl peroxide, lauroyl peroxide, benzobisisobuty, etc.), peroxydicarbonate (diisopropyl).
- hydroperoxide tert-butylhydroperoxide, cumenehydroperoxide, etc.
- dialkyl peroxide di-tert-butyl peroxide (perbutyl (registered trademark) D (manufactured by Ni
- the content of the photopolymerization initiator in the polymerizable composition is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.05% by mass or more and 8% by mass or less, based on the total mass of the polymerizable composition. It is preferable, and more preferably 0.1% by mass or more and 5% by mass or less.
- the polymerizable composition may contain various additives as other components other than the above components, if necessary.
- the additive include a sensitizer, a curing accelerator, a dispersant, an adhesion promoter such as a silane coupling agent, an antioxidant, an anti-aggregation agent, a thermal polymerization inhibitor, a defoaming agent, a surfactant and the like. ..
- the amount of these additives used is appropriately determined in consideration of the amount of these additives used in the polymerizable composition.
- the polymerizable composition may not contain a solvent, but may contain a solvent for the purpose of adjusting the coatability.
- the polymerizable composition preferably does not contain a solvent.
- the solvent may be water, an organic solvent, or an aqueous solution of an organic solvent. The smaller the content of the solvent in the polymerizable composition, the better, for example, 5% by mass or less is preferable, 3% by mass or less is more preferable, and 1% by mass or less is further preferable.
- a polymerizable composition can be obtained by uniformly mixing a predetermined amount of each of the above-described components.
- the manufacturing method of the substrate on which the element is mounted is as follows.
- the process of forming a sealant-regulating material that regulates the area where the sealant can flow on the substrate and Before or after the process of forming the encapsulant-regulated material, the process of mounting the element on the substrate, and the process of mounting the element on the substrate.
- the step of injecting a sealant into the above-mentioned region and sealing at least a part of the element A method comprising a step of sealing at least a portion of the device followed by a step of removing the sealant restricting material.
- the encapsulant-regulating material is formed by applying the polymerizable composition according to the first aspect onto a substrate and then polymerizing the polymerizable composition.
- the type of the substrate on which the element is mounted is not particularly limited in the step of forming the encapsulant-regulating material that regulates the region where the encapsulant can flow on the substrate.
- the above-mentioned polymerizable composition is applied to a position on the substrate where the sealant-regulating material is formed, and then the polymerizable composition is polymerized to form the sealant-regulating material on the substrate.
- the method for applying the polymerizable composition is not particularly limited, and various printing methods and coating methods can be applied.
- the polymerizable composition is preferably dispensed onto the substrate from the viewpoint of facilitating the formation of a sealant-regulating material having a desired shape and thickness.
- the polymerizable composition applied on the substrate is exposed and / or heated depending on the type of the polymerization initiator contained in the polymerizable composition. It is preferable to expose the polymerizable composition containing the photopolymerization initiator because it is easy to cure the polymerizable composition quickly and evenly.
- the conditions of exposure for curing the polymerizable composition are not particularly limited as long as the curing proceeds well.
- the exposure is performed by, for example, irradiating with active energy rays such as ultraviolet rays and excimer laser light.
- the energy dose to be irradiated is not particularly limited, and examples thereof include 30 mJ / cm 2 or more and 5000 mJ / cm 2 or less.
- the position on the substrate where the sealant-regulating material is formed may be any position where the flow of the sealant is to be regulated.
- the encapsulant-regulating material is preferably formed so as to completely surround the outer periphery of the device when the device is mounted on the substrate.
- at least a portion of the device is sealed with the sealant by injecting the sealant into a region surrounded by a sealant regulating material formed to completely surround the outer circumference of the device. While stopped, the flow of encapsulant can be regulated to the outside of the area surrounded by the encapsulant regulating material.
- the encapsulant regulating material is usually formed in a thick strip shape.
- the width and thickness of the encapsulant-regulating material are not particularly limited, and are appropriately determined in consideration of the size of the element, the method of encapsulating the element, and the like.
- the thickness of the encapsulant-regulating material is typically preferably 10 ⁇ m or more and 1000 ⁇ m or less, and more preferably 100 ⁇ m or more and 500 ⁇ m or less.
- the width of the encapsulant-regulating material is typically preferably 5 ⁇ m or more and 50 mm or less, and more preferably 100 ⁇ m or more and 5 mm or less.
- the thickness of the encapsulant regulating material is typically the thickness perpendicular to the plane direction of the substrate.
- the width of the encapsulant regulating material is typically the width in the direction parallel to the plane direction of the substrate.
- the element In the process of mounting the element on the substrate before or after the process of forming the encapsulant-regulating material, the element is mounted at a predetermined position on the substrate.
- the element may be mounted on a simple substrate, or may be an electrical connection between the element and the substrate using a ball grid array or the like.
- the sealant is injected into the region where the flow of the sealant is restricted by the sealant-regulating material. ..
- a liquid curable resin material is typically used.
- a curable resin material containing an epoxy compound is preferably used because it provides a cured product having excellent mechanical strength, heat resistance, chemical resistance and the like.
- the curable resin material containing an epoxy compound usually contains various curing agents, curing accelerators and the like. Further, the curable resin material may contain an inorganic filler such as silica.
- epoxy compounds include bifunctional epoxy resins such as bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, bisphenol AD type epoxy resin, naphthalene type epoxy resin, and biphenyl type epoxy resin; Novolak epoxy resin such as type epoxy resin, brominated phenol novolak type epoxy resin, orthocresol novolak type epoxy resin, bisphenol A novolak type epoxy resin, and bisphenol AD novolak type epoxy resin; Cyclic aliphatic epoxy resin; aromatic epoxy resin such as epoxidized product of naphthalene type phenol resin; glycidyl ester type epoxy resin such as dimer acid glycidyl ester and triglycidyl ester; tetraglycidylaminodiphenylmethane, triglycidyl-p-aminophenol , Tetraglycidylmethoxylylene diamine, and glycidylamine type epoxies such as tetraglycidylbis
- oligomer-type or polymer-type polyfunctional epoxy compounds can also be preferably used.
- Typical examples of oligomeric or polymer type polyfunctional epoxy compounds are phenol novolac type epoxy compounds, brominated phenol novolac type epoxy compounds, orthocresol novolac type epoxy compounds, xylenol novolac type epoxy compounds, naphthol novolac type epoxy compounds, Examples thereof include a bisphenol A novolak type epoxy compound, a bisphenol AD novolak type epoxy compound, an epoxidized product of a dicyclopentadiene type phenol resin, and an epoxidized product of a naphthalene type phenol resin.
- the injection amount of the sealant is appropriately selected depending on how the element is sealed.
- the sealing mode may be a so-called underfill in which only the lower portion of the element on the substrate side is fixed with a sealing agent, or a sealing method in which the element is completely embedded in the sealing agent.
- the sealant is a curable resin material
- the injected sealant is usually cured by exposure and / or heating depending on the composition of the sealant.
- the method of removing the sealant-regulating material is not particularly limited.
- the encapsulant-regulated material can be easily removed by contacting the encapsulant-regulated material with water and dissolving the encapsulant-regulated material in water. This is because the encapsulant-regulating material formed by curing the above-mentioned polymerizable composition dissolves well in water.
- the method of contacting the encapsulant-regulating material with water is not particularly limited.
- the substrate provided with the encapsulant-regulated material may be immersed in water, water may be placed on the encapsulant-regulated material, running water may be applied to the encapsulant-regulated material, and the encapsulant-regulated material may be poured. May be sprayed with water.
- the temperature of the water in contact with the encapsulant-regulated material is not particularly limited. For example, water may be heated to a temperature of about 40 ° C. or higher and 90 ° C. or lower in order to promote the dissolution of the sealant-regulating material.
- Example 1 Hydroxypropyl cellulose (HPC SSL manufactured by Nippon Soda) 100 parts by mass, N-acryloyl morpholine 150 parts by mass, Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone (manufactured by IGM Resins BV)) 4. 5 parts by mass were uniformly mixed to obtain a polymerizable composition.
- the viscosity of the obtained polymerizable composition measured by E-type viscosity at 25 ° C. was more than 200,000 cP.
- Example 1 Using a dispenser (SHOT MASTER3 manufactured by Musashi Engineering Co., Ltd.), the obtained composition of Example 1 is overcoated under the conditions of a needle diameter of ⁇ 0.4 mm, a pressure of 0.46 MPa, a speed of 1 mm / sec, and a gap between substrates of 1 mm. By doing so, a dam pattern having a height of 250 ⁇ m and a line width of 1.6 mm was applied onto the silicon substrate. The uncured dam pattern was irradiated with exposure light at 500 mJ / cm 2 using an ultrahigh pressure mercury lamp to form a cured product.
- SHOT MASTER3 manufactured by Musashi Engineering Co., Ltd.
- This cured product was heated in a warm air oven at 180 ° C for 120 minutes, and after confirming that the height of the dam pattern after heating was 250 ⁇ m and the line width was 1.8 mm, there was no significant change, and then pure water was 55 ° C.
- the dam material was peeled off by immersing it in the oven for 30 minutes, and it was confirmed that there was no residual film.
- Example 2 Hydroxypropyl cellulose (HPC SSL manufactured by Nippon Soda) 100 parts by mass, N, N-dimethylacrylamide 150 parts by mass, Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone (manufactured by IGM Resins B.V.)) 4.5 parts by mass were uniformly mixed to obtain a polymerizable composition.
- the viscosity of the obtained polymerizable composition measured by E-type viscosity at 25 ° C. was 18821 cP.
- Example 2 By recoating the composition of Example 2 using a dispenser (SHOT MASTER3 manufactured by Musashi Engineering Co., Ltd.) under the conditions of a needle diameter of ⁇ 0.4 mm, a pressure of 0.46 MPa, a speed of 1 mm / sec, and a gap between substrates of 1 mm.
- a dam pattern having a height of 300 ⁇ m and a line width of 1.6 mm was applied onto a silicon substrate.
- the uncured dam pattern was irradiated with exposure light at 500 mJ / cm 2 using an ultrahigh pressure mercury lamp to form a cured product.
- This cured product was heated in a warm air oven at 180 ° C for 120 minutes, and after confirming that the height of the dam pattern after heating was 300 ⁇ m and the line width was 1.7 mm, there was no significant change, and then pure water was 55 ° C.
- the dam material was peeled off by immersing it in the oven for 30 minutes, and it was confirmed that there was no residual film.
- Example 3 Hydroxypropyl cellulose (HPC SSL manufactured by Nippon Soda) 100 parts by mass, N, N-diethylacrylamide 150 parts by mass, Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone (manufactured by IGM Resins B.V.)) 4.5 parts by mass were uniformly mixed to obtain a polymerizable composition.
- the viscosity of the obtained polymerizable composition measured by E-type viscosity at 25 ° C. was 191421 cP.
- Example 3 By recoating the composition of Example 3 using a dispenser (SHOT MASTER3 manufactured by Musashi Engineering Co., Ltd.) under the conditions of a needle diameter of ⁇ 0.4 mm, a pressure of 0.46 MPa, a speed of 1 mm / sec, and a gap between substrates of 1 mm.
- a dam pattern having a height of 250 ⁇ m and a line width of 1.7 mm was applied onto a silicon substrate.
- the uncured dam pattern was irradiated with exposure light at 500 mJ / cm 2 using an ultrahigh pressure mercury lamp to form a cured product.
- This cured product was heated in a warm air oven at 180 ° C for 120 minutes, and after confirming that the height of the dam pattern after heating was 250 ⁇ m and the line width was 1.8 mm, there was no significant change, and then pure water was 55 ° C.
- the dam material was peeled off by immersing it in the oven for 30 minutes, and it was confirmed that there was no residual film.
- Example 4 100 parts by mass of hydroxypropyl cellulose (HPC SSL manufactured by Nippon Soda Co., Ltd.), 150 parts by mass of dimethylaminoethyl acrylate, and Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone (manufactured by IGM Resins B.V.)). 5 parts by mass were uniformly mixed to obtain a polymerizable composition.
- the viscosity of the obtained polymerizable composition measured by E-type viscosity at 25 ° C. was more than 200,000 cP.
- Example 4 By recoating the composition of Example 4 using a dispenser (SHOT MASTER3 manufactured by Musashi Engineering Co., Ltd.) under the conditions of a needle diameter of ⁇ 0.4 mm, a pressure of 0.46 MPa, a speed of 1 mm / sec, and a gap between substrates of 1 mm.
- a dam pattern having a height of 250 ⁇ m and a line width of 1.7 mm was applied onto a silicon substrate.
- the uncured dam pattern was irradiated with exposure light at 500 mJ / cm 2 using an ultrahigh pressure mercury lamp to form a cured product.
- This cured product was heated in a warm air oven at 180 ° C for 120 minutes, and after confirming that the height of the dam pattern after heating was 250 ⁇ m and the line width was 1.8 mm, there was no significant change, and then pure water was 55 ° C.
- the dam material was peeled off by immersing it in the oven for 30 minutes, and it was confirmed that there was no residual film.
- Comparative Example 1 100 parts by mass of an amine-based water-soluble polymer, 150 parts by mass of dipentaerythritol hexaacrylate, and 4.5 parts by mass of Omnirad 651 (2,2-dimethoxy-2-phenylacetophenone (manufactured by IGM Resins B.V.)). The mixture was uniformly mixed to obtain a polymerizable composition. Using the polymerizable composition of Comparative Example 1, the encapsulant-regulating material was dissolved and exfoliated with water by the same method as in Example 1, but it was formed using the polymerizable composition of Comparative Example 1. The encapsulant regulatory material could not be completely stripped.
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Abstract
Description
例えば、特許文献2においては、ダム剤の設けられた基板上主面に存在する素子を封止樹脂により封止し、切断工程等のその後の工程に悪影響を及ぼさないために、ダム剤を除去する技術が開示されている。
また、ここでのダム剤の除去にあたっては、当該ダム剤の材料を熱硬化性の材料とし硬化させることで密着性を低下させて剥離を行うことや、溶解等で行うといったアプローチが示されている。
水溶性ポリマーと、含窒素単官能(メタ)アクリルモノマーと、重合開始剤とを含む重合性組成物である。
基板上に、封止剤が流動し得る領域を規制する封止剤規制材料を形成する工程と、
封止剤規制材料を形成する工程の前又は後に、基板に素子を搭載する工程と、
前述の領域内に、封止剤を注入し、素子の少なくとも一部を封止する工程と、
素子の少なくとも一部を封止する工程の後に、封止剤規制材料を除去する工程と、を含み、
封止剤規制材料が、第1の態様にかかる重合性組成物を基板上に塗布した後に、重合性組成物を重合させることにより形成される、製造方法である。
重合性組成物は、封止規制材料を形成するために用いられる。封止規制材料は、基板上に備えられた素子の少なくとも一部を封止剤により封止する封止工程において封止剤が流動し得る領域を規制し、且つ、封止工程後に基板上から除去される。
ここで、封止剤の流動が規制される領域は、基板の主面上における2次元の領域だけではなく、基板の主面上の空間の一部である3次元の領域も包含する。
例えば、封止剤規制材料の基板の厚さ方向の寸法を調整することにより、基板の厚さ方向の封止剤の流動範囲を規制できる。
重合性組成物の粘度が上記の範囲内であると、重合性組成物のディスペンス塗布が容易であり、好ましいサイズ及び形状の封止剤規制材料を、基板上の所定の位置に正確に形成しやすい。
重合性組成物は、水溶性ポリマーを含有する。このため、重合性組成物を用いて形成される封止剤規制材料は、高い水溶性を示す。
水溶性とは、25℃の水100gに対して、溶質(水溶性ポリマー)が0.5g以上溶解することをいう。
ビニル系樹ポリマーとしては、ビニル基を有する単量体の単独重合体、又は共重合体であって、水溶性のポリマーであれば特に限定されない。ビニル系ポリマーとしては、ポリビニルアルコール、ポリビニルアセタール(酢酸ビニル共重合体も含む)、ポリビニルピロリドン、ポリアクリルアミド、ポリ(N-アルキルアクリルアミド)、ポリアリルアミン、ポリ(N-アルキルアリルアミン)、部分アミド化ポリアリルアミン、ポリ(ジアリルアミン)、アリルアミン・ジアリルアミン共重合体、ポリアクリル酸、ポリビニルアルコールポリアクリル酸ブロック共重合体、及びポリビニルアルコールポリアクリル酸エステルブロック共重合体が挙げられる。
セルロース系ポリマーとしては、水溶性のセルロース、又はセルロース誘導体であれば特に限定されない。セルロース系ポリマーの好適な具体例としては、セルロース;メチルセルロース、エチルセルロース、n-プロピルセルロース、イソプロピルセルロース、n-ブチルセルロース、tert-ブチルセルロース、及びn-ヘキシルセルロース等のアルキルセルロース;ヒドロキシメチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、及びヒドロキシブチルセルロース等のヒドロキシアルキルセルロース;セルロースアセテート、セルロースジアセテート、セルローストリアセテート、セルロースアセテートプロピオネート、及びセルロースアセテートブチレート等のセルロースエステル;カルボキシメチルセルロース、カルボキシエチルセルロース、及びカルボキシプロピルセルロース等のカルボキシアルキルセルロース;ニトロセルロース、アルデヒドセルロース、ジアルデヒドセルロース、及びスルホン化セルロース等のセルロース誘導体等が挙げられる。
これらは、1種単独で使用することもできるし、2種以上を組み合わせて使用することもできる。
なお、ここでの熱重量測定の条件としては、典型的には以下の内容を採用する。
・使用装置:TG/DTA装置(示差熱-熱重量同時測定装置、株式会社日立ハイテクサイエンス社製、TD/DTA6200R)
・昇温速度:10℃/分
・雰囲気:空気(流量200mL/分)
かかる範囲内の量の水溶性ポリマーを用いることにより、ディスペンス塗布に好適な粘度の重合性組成物を得やすく、エポキシ化合物等の封止剤と相溶しにくい封止剤規制材料を形成しやすい。
重合性組成物は、含窒素単官能(メタ)アクリルモノマーを含む。典型的には、含窒素単官能(メタ)アクリルモノマーは、未硬化の状態では液状である。このため、含窒素単官能(メタ)アクリルモノマーは、重合性組成物において反応性希釈剤の役割をする。
なお、「含窒素単官能アクリルモノマー」の具体的な態様としては、(α)単官能の(メタ)アクリルアミドモノマーと、(β)(メタ)アクリル酸と構造中に窒素原子を含むアルコールとの縮合体(含窒素(メタ)アクリル酸エステルモノマー)の双方を含む。
また、含窒素単官能(メタ)アクリルモノマーは、重合することにより水溶性の(メタ)アクリルポリマーを与える。このため、重合性組成物を用いて形成される封止剤規制材料は水溶性に優れる。
ホモポリマーとしてのガラス転移温度は、Prediction of polymer properties, Marcel Dekker Inc, New York(1993)に記載されるBiceranoの方法(the method of Bicerano)により算出することができる。
以下、前述した(α)の態様について説明する。
単官能(メタ)アクリルアミドモノマーの好ましい具体例としては、N,N-ジメチル(メタ)アクリルアミド、N,N-ジエチル(メタ)アクリルアミド、及びN,N-ジプロピル(メタ)アクリルアミド等が挙げられる。
式(a1)で表される(メタ)アクリルアミド誘導体の入手や合成が容易であったり、水溶性が良好な(メタ)アクリル樹脂を与える点で、式(a1)において、Xが-O-であるのが好ましい。
以下、前述した(β)の態様について説明する。
含窒素(メタ)アクリル酸エステルモノマーは、(メタ)アクリル酸と構造中に窒素原子を含むアルコール化合物とが縮合した構造を有する化合物である。
ここで構造中に窒素原子を含むアルコール化合物は、その構造中に1つのみの水酸基を有するものである。
また、R5及びR6はともにメチル基又はエチル基であることが好ましい。
かかる範囲内の量の含窒素単官能(メタ)アクリルモノマーを用いることにより、ディスペンス塗布に好適な粘度の重合性組成物を得やすく、耐熱性及び水溶性に優れる封止剤規制材料を形成しやすい。
重合性組成物は、前述の含窒素単官能(メタ)アクリルモノマーを重合させるために、重合開始剤を含む。含窒素単官能(メタ)アクリルモノマーを重合させるためには、通常、重合開始剤としてラジカル重合開始剤が用いられる。重合開始剤は、露光により含窒素単官能(メタ)アクリルモノマーを重合させる光重合開始剤であってもよく、加熱により含窒素単官能(メタ)アクリルモノマーを重合させる熱重合開始剤であってもよい。
短時間で重合性組成物を良好に硬化させやすい点等から、開始剤は、光重合開始剤が好ましい。
これらの中では、含窒素単官能(メタ)アクリルモノマーとの相溶性の点で、アルキルフェノン系光重合開始剤が好ましく、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン)がより好ましい。
かかる範囲内の量の光重合開始剤を用いることにより、封止剤規制材料を形成する際に、重合性組成物を良好に硬化させやすい。
重合性組成物は、必要に応じて、上記の成分以外のその他成分として各種の添加剤を含有していてもよい。添加剤としては、増感剤、硬化促進剤、分散剤、シランカップリング剤等の密着促進剤、酸化防止剤、凝集防止剤、熱重合禁止剤、消泡剤、界面活性剤等が挙げられる。
これらの添加剤の使用量は、重合性組成物においてこれらの添加剤が使用される量を勘案して適宜定められる。
重合性組成物は、溶媒を含んでいなくてもよいが、塗布性の調整の目的で溶媒を含んでいてもよい。重合性組成物は、溶媒を含まないのが好ましい。溶媒は、水であっても、有機溶媒であっても、有機溶媒の水溶液であってもよい。
重合性組成物の溶媒の含有量は、少ないほどよく、例えば、5質量%以下が好ましく、3質量%以下がより好ましく、1質量%以下がさらに好ましい。
素子が搭載された基板の製造方法は、
基板上に、封止剤が流動し得る領域を規制する封止剤規制材料を形成する工程と、
封止剤規制材料を形成する工程の前又は後に、基板に素子を搭載する工程と、
前述の領域内に、封止剤を注入し、素子の少なくとも一部を封止する工程と、
素子の少なくとも一部を封止する工程の後に、封止剤規制材料を除去する工程と、を含む方法である。
封止剤規制材料は、第1の態様にかかる重合性組成物を基板上に塗布した後に、重合性組成物を重合させることにより形成される。
以下、各工程について説明する。
前述の重合性組成物を基板上の封止剤規制材料が形成される位置に塗布した後、重合性組成物を重合させることにより、基板上に封止剤規制材料が形成される。
重合性組成物を塗布する方法は特に限定されず、種々の印刷法、塗布法を適用可能である。所望する形状、及び厚さの封止剤規制材料の形成が容易である点からは、重合性組成物は基板上にディスペンス塗布されるのが好ましい。
重合性組成物を硬化させるために露光する条件は、硬化が良好に進行する限り特に限定されない。露光は、例えば、紫外線、エキシマレーザー光等の活性エネルギー線を照射することにより行われる。照射するエネルギー線量は特に制限はないが、例えば30mJ/cm2以上5000mJ/cm2以下が挙げられる。
典型的には、素子の外周を完全に囲むように形成された封止剤規制材料で囲まれた領域内に、封止剤を注入することにより、素子の少なくとも一部を封止剤により封止しつつ、封止剤規制材料で囲まれた領域の外側への封止剤の流動を規制できる。
封止剤規制材料の厚さは、典型的には、10μm以上1000μm以下が好ましく、100μm以上500μm以下がより好ましい。封止剤規制材料の幅は、典型的には、5μm以上50mm以下が好ましく、100μm以上5mm以下がより好ましい。封止剤規制材料の厚さは、典型的には、基板の面方向に対して垂直方向の厚さである。封止剤規制材料の幅は、典型的には、基板の面方向に対して平行な方向の幅である。
封止剤としては、典型的には液状の硬化性樹脂材料が使用される。液状の硬化性樹脂材料としては、機械的強度、耐熱性、耐薬品性等に優れる硬化物を与えることから、エポキシ化合物を含む硬化性樹脂材料が好ましく使用される。エポキシ化合物を含む硬化性樹脂材料は、通常、種々の硬化剤や硬化促進剤等を含む。また、硬化性樹脂材料は、シリカ等の無機充填材を含んでいてもよい。
オリゴマー又はポリマー型の多官能エポキシ化合物の典型的な例としては、フェノールノボラック型エポキシ化合物、臭素化フェノールノボラック型エポキシ化合物、オルソクレゾールノボラック型エポキシ化合物、キシレノールノボラック型エポキシ化合物、ナフトールノボラック型エポキシ化合物、ビスフェノールAノボラック型エポキシ化合物、ビスフェノールADノボラック型エポキシ化合物、ジシクロペンタジエン型フェノール樹脂のエポキシ化物、ナフタレン型フェノール樹脂のエポキシ化物等が挙げられる。
封止剤が硬化性樹脂材料である場合、注入された封止剤は、通常、封止剤の組成に応じて露光及び/又は加熱されることにより硬化される。
封止剤規制材料を水と接触させる方法は特に限定されない。封止剤規制材料を備える基板を、水に浸漬してもよく、封止剤規制材料上に水を盛ってもよく、封止剤規制材料に流水をかてもよく、封止剤規制材料に水をスプレーしてもよい。
封止剤規制材料と接触させる水の温度は特に限定されない。封止剤規制材料の溶解を促進する点で、例えば、水は、40℃以上90℃以下程度の温度に加温されていてもよい。
ヒドロキシプロピルセルロース(日本曹達社製 HPC SSL)100質量部と、N-アクリロイルモルホリン150質量部と、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン(IGM Resins B.V.製))4.5質量部とを均一に混合して重合性組成物を得た。得られた重合性組成物の25℃においてE型粘度により測定された粘度は、200,000cPを超えるものであった。
ヒドロキシプロピルセルロース(日本曹達社製 HPC SSL)100質量部と、N,N-ジメチルアクリルアミド150質量部と、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン(IGM Resins B.V.製))4.5質量部とを均一に混合して重合性組成物を得た。得られた重合性組成物の25℃においてE型粘度により測定された粘度は、18821cPであった。
ヒドロキシプロピルセルロース(日本曹達社製 HPC SSL)100質量部と、N,N-ジエチルアクリルアミド150質量部と、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン(IGM Resins B.V.製))4.5質量部とを均一に混合して重合性組成物を得た。得られた重合性組成物の25℃においてE型粘度により測定された粘度は、191421cPであった。
ヒドロキシプロピルセルロース(日本曹達社製 HPC SSL)100質量部と、ジメチルアミノエチルアクリレート150質量部と、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン(IGM Resins B.V.製))4.5質量部とを均一に混合して重合性組成物を得た。得られた重合性組成物の25℃においてE型粘度により測定された粘度は、200,000cPを超えるものであった。
アミン系水溶性ポリマー100質量部と、ジペンタエリスリトールヘキサアクリレート150質量部と、Omnirad 651(2,2-ジメトキシ-2-フェニルアセトフェノン(IGM Resins B.V.製))4.5質量部とを均一に混合して重合性組成物を得た。
比較例1の重合性組成物を用いて、実施例1と同様の方法により、封止剤規制材料の水による溶解剥離を行ったが、比較例1の重合性組成物を用いて形成された封止剤規制材料を完全に剥離することはできなかった。
Claims (8)
- 基板上に備えられた素子の少なくとも一部を封止剤により封止する封止工程において前記封止剤が流動し得る領域を規制し、且つ、封止工程後に前記基板上から除去される封止剤規制材料を形成するために用いられる、重合性組成物であって、
水溶性ポリマーと、含窒素単官能(メタ)アクリルモノマーと、重合開始剤とを含む重合性組成物。 - 前記含窒素単官能(メタ)アクリルモノマーについての、ホモポリマーとしてのガラス転移温度の計算値が100℃以上である、請求項1~3のいずれか1項に記載の重合性組成物。
- 前記重合開始剤が光重合開始剤である、請求項1~4のいずれか1項に記載の重合性組成物。
- 前記光重合開始剤が、アルキルフェノン系光重合開始剤である、請求項5に記載の重合性組成物。
- 25℃においてE型粘度計により測定される粘度が、1,000cP以上300,000cP以下である、請求項1~6のいずれか1項に記載の重合性組成物。
- 素子が搭載された基板の製造方法であって、
前記基板上に、封止剤が流動し得る領域を規制する封止剤規制材料を形成する工程と、
前記封止剤規制材料を形成する前記工程の前又は後に、前記基板に素子を搭載する工程と、
前記領域内に、前記封止剤を注入し、前記素子の少なくとも一部を封止する工程と、
前記素子の少なくとも一部を封止する前記工程の後に、前記封止剤規制材料を除去する工程と、を含み、
前記封止剤規制材料が、請求項1~7のいずれか1項に記載の重合性組成物を前記基板上に塗布した後に、前記重合性組成物を重合させることにより形成される、製造方法。
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Citations (6)
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JPH08184786A (ja) * | 1994-12-28 | 1996-07-16 | Tomey Technol Corp | 含水性ソフトコンタクトレンズおよびその製法 |
JPH08325476A (ja) * | 1995-05-31 | 1996-12-10 | Japan Synthetic Rubber Co Ltd | ダム形成用感光性樹脂組成物 |
JPH11326916A (ja) * | 1998-05-08 | 1999-11-26 | Sekisui Finechem Co Ltd | 液晶表示素子用スペーサ及び液晶表示素子 |
WO2002093213A1 (fr) * | 2001-05-10 | 2002-11-21 | Nippon Kayaku Kabushiki Kaisha | Compose cristallin liquide et film a dephasage l'utilisant |
JP2011174972A (ja) * | 2010-02-23 | 2011-09-08 | Shin-Etsu Chemical Co Ltd | 封止材パターンの形成方法 |
US20130163255A1 (en) * | 2011-12-23 | 2013-06-27 | Lg Display Co., Ltd. | Organic light emitting display device and method for fabricating the same |
-
2021
- 2021-11-30 JP JP2022572029A patent/JPWO2022138012A1/ja active Pending
- 2021-11-30 US US18/255,848 patent/US20240010829A1/en active Pending
- 2021-11-30 WO PCT/JP2021/043797 patent/WO2022138012A1/ja active Application Filing
- 2021-12-09 TW TW110146075A patent/TW202231771A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08184786A (ja) * | 1994-12-28 | 1996-07-16 | Tomey Technol Corp | 含水性ソフトコンタクトレンズおよびその製法 |
JPH08325476A (ja) * | 1995-05-31 | 1996-12-10 | Japan Synthetic Rubber Co Ltd | ダム形成用感光性樹脂組成物 |
JPH11326916A (ja) * | 1998-05-08 | 1999-11-26 | Sekisui Finechem Co Ltd | 液晶表示素子用スペーサ及び液晶表示素子 |
WO2002093213A1 (fr) * | 2001-05-10 | 2002-11-21 | Nippon Kayaku Kabushiki Kaisha | Compose cristallin liquide et film a dephasage l'utilisant |
JP2011174972A (ja) * | 2010-02-23 | 2011-09-08 | Shin-Etsu Chemical Co Ltd | 封止材パターンの形成方法 |
US20130163255A1 (en) * | 2011-12-23 | 2013-06-27 | Lg Display Co., Ltd. | Organic light emitting display device and method for fabricating the same |
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TW202231771A (zh) | 2022-08-16 |
US20240010829A1 (en) | 2024-01-11 |
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