WO2011052432A1 - 発光性組成物、電界発光シート及びその製造方法 - Google Patents
発光性組成物、電界発光シート及びその製造方法 Download PDFInfo
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- WO2011052432A1 WO2011052432A1 PCT/JP2010/068384 JP2010068384W WO2011052432A1 WO 2011052432 A1 WO2011052432 A1 WO 2011052432A1 JP 2010068384 W JP2010068384 W JP 2010068384W WO 2011052432 A1 WO2011052432 A1 WO 2011052432A1
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/0403—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems
- C09K2019/0407—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems containing a carbocyclic ring, e.g. dicyano-benzene, chlorofluoro-benzene or cyclohexanone
Definitions
- the present invention relates to a luminescent composition, an electroluminescent sheet, and a method for producing the same, and in particular, a luminescent composition that can be bonded to an electrode at room temperature, using the luminescent composition efficiently at low cost, and with high brightness.
- the present invention relates to a highly reliable electroluminescent sheet that can be mass-produced and a manufacturing method thereof.
- An electroluminescent element using an AC power source for example, an inorganic EL element
- an inorganic EL element can be formed on a paper or a polymer film by a printing technique, and has formed a market as an electric decoration element that requires flexibility.
- this inorganic EL element is formed by applying a dielectric material and a luminescent material dispersed in a resin binder on electrodes by using a screen printing technique, respectively. It is manufactured by stacking.
- the electroluminescent sheet produced by these methods has a number of processes and is not suitable for mass production.
- Patent Document 2 provides an electroluminescent sheet having high luminance and high reliability by using a resin binder having a high dielectric constant for the light emitting layer.
- the resin binder has no adhesiveness at room temperature.
- it is necessary to perform heat bonding, which may cause damage to the base material and the electrode, and there is a problem that production efficiency is remarkably lowered.
- the present invention has been made to solve the above-described problems, and does not require heating, can be produced at room temperature, has high productivity, and can be mass-produced at low cost, and a method for producing the same And a luminescent composition used therefor.
- the present inventors have achieved the above object by using a luminescent composition containing a predetermined amount of a compound having a cyanoethyl group, an adhesive resin material, and an electroluminescent material.
- the present invention has been completed.
- a luminescent composition comprising (A) a compound having a cyanoethyl group, (B) an adhesive resin material, and (C) an electroluminescent material, wherein (A) component (B) relative to 100 parts by mass of component A luminescent composition having an amount of 1-1000 parts by mass; (2) Component (B) is selected from (a) an adhesive resin material having a glass transition temperature of ⁇ 70 to 5 ° C. and (b) an adhesive resin material containing a rubbery hydrocarbon elastomer and a tackifier.
- the luminescent composition according to (1) comprising at least one selected from the group consisting of: (3) The luminescent composition according to (1), wherein the component (A) has a mass average molecular weight of 10,000 to 200,000, (4) The luminescent composition according to the above (1), wherein the amount of the component (C) is 0.5 to 600 parts by mass with respect to 100 parts by mass in total of the components (A) and (B), (5) The luminescent composition according to (1) above, wherein the component (C) is kneaded and dispersed in a mixture of the component (A) and the component (B).
- An electroluminescent sheet formed using the luminescent composition according to any one of (8) Using a coating apparatus having at least a roll feeding part, a roll winding part, a coating part, and a bonding part, one of the first electrode and the second electrode wound in a roll shape is fed,
- the luminescent composition according to any one of the above (1) to (6) is applied in the application part to form an electroluminescent layer on the drawn-out electrode, and the electroluminescent layer and the other one are applied in the bonding part.
- the luminescent composition of the present invention has adhesiveness and can be bonded to an electrode at room temperature, it can be mass-produced with high brightness and high reliability, and can be bonded with an electrode at room temperature. Can provide a sheet.
- the luminescent composition of the present invention is a luminescent composition comprising (A) a compound having a cyanoethyl group, (B) an adhesive resin material, and (C) an electroluminescent material, wherein (A) component is 100 parts by mass.
- the amount of the component (B) is 1 to 1000 parts by weight, and preferably 2 to 300 parts by weight.
- a light-emitting composition having adhesiveness cannot be obtained, and light emission unevenness occurs due to partial adhesion failure with the electrode described later, resulting in a decrease in light emission luminance.
- it exceeds 1000 parts by mass sufficient light emission luminance cannot be obtained.
- the amount of the component (C) is preferably 0.5 to 600 parts by mass, more preferably 1 to 400 parts by mass with respect to 100 parts by mass of the total of the components (A) and (B). If the amount of the component (C) is 0.5 parts by mass or more, sufficient function (light emitting function) as a luminescent composition is obtained, and if it is 600 parts by mass or less, it is sufficient for bonding with an electrode. Adhesiveness can be obtained.
- Examples of the compound having a cyanoethyl group as the component (A) include cyanoethylated products of polysaccharides such as cyanoethylcellulose, cyanoethyl pullulan, cyanoethyl starch, cyanoethylated products of polysaccharide derivatives such as cyanoethylhydroxyethylcellulose, cyanoethylglycerol pullulan, cyanoethyl polyvinyl alcohol, etc. Cyanoethylated products of polyols, cyanoethylated products of sucrose, cyanoethylated products of sugar alcohols, and the like.
- cyanoethylated products are prepared by, for example, reacting a compound having a hydroxyl group such as the above-mentioned polysaccharides, polysaccharide derivatives, polyols, sucrose and sugar alcohols with acrylonitrile, and a part or all of the hydroxyl groups have a cyanoethyl group. Obtained by substituting a substituent.
- the luminescent composition of the present invention contains a compound having a cyanoethyl group, the relative dielectric constant of the portion other than the electroluminescent body of the electroluminescent layer formed using the luminescent composition is increased, and the luminescent brightness is increased. Becomes higher.
- the component (A) preferably has a weight average molecular weight of 10,000 to 200,000, more preferably 20,000 to 150,000. When the mass average molecular weight is within this range, the compound having a cyanoethyl group functions well as a binder, and an electroluminescent layer having moderate flexibility can be formed.
- the content (nitrogen content) of nitrogen derived from the cyanoethyl group of the compound having a cyanoethyl group is preferably 5% by mass or more.
- the nitrogen content is preferably 5 to 20% by mass, and more preferably 8 to 15% by mass.
- the nitrogen content is obtained by CHN elemental analysis.
- the softening temperature of the compound having a cyanoethyl group is preferably 20 to 150 ° C. When the softening temperature is within this range, an electroluminescent layer having appropriate flexibility can be formed even if an electroluminescent material is included.
- the softening temperature is measured according to JIS K7206.
- the adhesive resin material of component (B) is not particularly limited as long as it is an adhesive resin material, but (a) an adhesive resin material having a glass transition temperature of ⁇ 70 to 5 ° C. and (b) It is preferable that it is at least one selected from adhesive resin materials containing a rubber-like hydrocarbon elastomer and a tackifier.
- the component (a) include acrylic resins such as acrylic polymers.
- the acrylic resin having tackiness include (meth) acrylic acid ester having an alkyl group of 1 to 20 carbon atoms in the ester portion, a monomer having a functional group such as a carboxyl group, and other simple units.
- (meth) acrylic acid means both “acrylic acid” and “methacrylic acid”.
- examples of the (meth) acrylic acid ester having 1 to 20 carbon atoms in the alkyl group of the ester portion include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, (meth ) Butyl acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, decyl (meth) acrylate, ( Examples include dodecyl (meth) acrylate, myristyl (meth) acrylate, palmity
- Examples of monomers having functional groups that are used as desired include ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, citraconic acid; (meth) acrylic acid 2-hydroxy Ethyl, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, 4-hydroxy (meth) acrylate (Meth) acrylic acid hydroxyalkyl esters such as butyl; (meth) acrylic acid monomethylaminoethyl, (meth) acrylic acid monoethylaminoethyl, (meth) acrylic acid monomethylaminopropyl, (meth) acrylic acid monoethylaminopropyl, etc.
- carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, cit
- (Meth) acrylic acid monoalkylamino Such as alkyl, and the like. These monomers may be used independently and may be used in combination of 2 or more type. Examples of other monomers used as desired include vinyl esters such as vinyl acetate and vinyl propionate; olefins such as ethylene, propylene and isobutylene; halogenated olefins such as vinyl chloride and vinylidene chloride; Styrene monomers such as styrene and ⁇ -methylstyrene; Diene monomers such as butadiene, isoprene and chloroprene; Nitrile monomers such as acrylonitrile and methacrylonitrile; Acrylamide, N-methylacrylamide, N, N -Examples include acrylamides such as dimethylacrylamide. These may be used alone or in combination of two or more.
- the acrylic resin when used, the other monomer mainly having (meth) acrylic acid ester and having a functional group so that the glass transition temperature is in the range of ⁇ 70 to 5 ° C. It is preferable to polymerize at least one selected from the other monomers. There is no restriction
- the molecular weight is preferably 300,000 or more, more preferably 500,000 to 1,500,000 in terms of mass average molecular weight.
- the mass average molecular weight is a value obtained by measuring the polymer by gel permeation chromatography using tetrahydrofuran as a developing solvent, and calculating it as a polystyrene equivalent value.
- a functional group having active hydrogen in the acrylic resin for example, a hydroxyl group
- a carboxyl group may be reacted with a crosslinking agent such as a polyisocyanate compound, or an internal crosslinking agent such as a polyfunctional acrylate monomer may be copolymerized during polymerization.
- the glass transition temperature Tg of the acrylic resin after crosslinking is preferably in the range of ⁇ 70 to 5 ° C. In the present invention, the glass transition temperature (Tg) is determined by the following measuring method 1.
- the rubbery hydrocarbon elastomer contained in the component (b) is not particularly limited, and various rubber elastomers such as diene rubber elastomer, olefin rubber elastomer, styrene rubber elastomer and the like can be used. it can.
- the diene rubber-like elastomer include natural rubber, synthetic isoprene rubber, butadiene rubber, nitrile rubber, hydrogenated nitrile rubber, and chloroprene rubber.
- Examples of the olefin rubber-like elastomer include polyisobutylene, polybutene, and butyl rubber.
- Ethylene / propylene copolymer elastomer ethylene / 1-butene copolymer elastomer, ethylene / propylene / 1-butene copolymer elastomer, ethylene / 1-hexene copolymer elastomer, ethylene / 1-octene copolymer elastomer , Ethylene / styrene copolymer elastomer, ethylene / norbornene copolymer elastomer, propylene / 1-butene copolymer elastomer, ethylene / propylene / non-conjugated diene copolymer elastomer, ethylene / - butene - non-conjugated diene copolymer elastomer, ethylene-propylene-1-butene - such as non-conjugated diene copolymer elastomers.
- examples of styrene-based rubbery elastomers include styrene / ethylene / propylene block copolymers, styrene / butadiene block copolymers, styrene / butadiene / styrene block copolymers, styrene / isoprene block copolymers, and styrene / isoprene.
- examples thereof include a hydrogenated product of a block copolymer.
- one type of rubber-like hydrocarbon e one type of rubber-
- tackifiers contained in the component (b) include rosin resin, rosin ester resin, terpene resin, terpene phenol resin, phenol resin, xylene resin, coumarone resin, coumarone indene resin, styrene resin, aliphatic series.
- examples include petroleum resins, aromatic petroleum resins, alicyclic hydrocarbon resins, modified products thereof, and hydrogenated products, but are not limited thereto. These tackifiers may be used alone or in combination of two or more.
- the relative dielectric constant of the mixture of the component (A) and the component (B) is preferably 6 or more, more preferably 6.5 to 30.
- the relative dielectric constant is determined by the following measurement method 2. (Measurement method 2) The composition was formed into a sheet-like film thickness of 100 ⁇ m (size: 5 cm ⁇ 5 cm). The capacitance (Cp) at 1 MHz was measured using an impedance analyzer and substituted into the following formula to determine the relative dielectric constant ( ⁇ ).
- ⁇ (d ⁇ Cp) / ( ⁇ ⁇ r 2 ⁇ ⁇ 0 ) [D: film thickness (m), r: electrode radius (2.5 ⁇ 10 ⁇ 3 m), ⁇ 0 : dielectric constant of vacuum (8.854 ⁇ 10 ⁇ 12 )]
- the electroluminescent body of the component (C) is not particularly limited as long as it can emit light by applying a voltage.
- ZnS: Cu, ZnS: Mn, ZnS: TbF 3 , ZnS: SmF 3 , ZnS Inorganic EL (EL: electroluminescence) materials such as: TmF 3 , CaS: Eu, and SrS: Ce.
- the luminescent composition of the present invention includes other additives such as, for example, as long as it does not affect the effects of the present invention. Further, an anti-settling agent, an organic or inorganic phosphor, an ultraviolet absorber, an infrared absorber and the like may be added.
- the components (A), (B) and (C) may be dispersed and mixed by a conventional method, but a mixture of the components (A) and (B) (hereinafter referred to as (A) When the mixture of the component and the component (B) is kneaded and dispersed in the adhesive composition), the production efficiency is good.
- a solvent may be added.
- the solvent methyl ethyl ketone, methyl isobutyl ketone, or the like can be used.
- the amount of the solvent is preferably 20 to 400 parts by mass with respect to 100 parts by mass of the adhesive composition.
- the electroluminescent sheet using the luminescent composition of the present invention at least a first electrode, an electroluminescent layer, and a second electrode are laminated in this order, and at least one of the first electrode and the second electrode is transparent.
- the electroluminescent layer is formed using the luminescent composition of the present invention.
- the first electrode and the second electrode are not particularly limited as long as one of them is transparent, but a thin film of a metal oxide film such as indium tin oxide (ITO), indium oxide or tin oxide, a noble metal thin film
- a metal oxide film such as indium tin oxide (ITO), indium oxide or tin oxide
- a noble metal thin film Such as ultra-thin films, transparent electrode materials such as organic materials such as conductive polymers such as polyaniline and polythiophene, metal foils such as Al, Cu, and Ni, resin films in which conductive fillers such as carbon black are dispersed in the resin, etc.
- the thickness of the electroluminescent layer is usually 0.1 to 200 ⁇ m, preferably 1 to 100 ⁇ m. In the electroluminescent sheet of the present invention, it is preferable to provide a dielectric layer.
- the dielectric layer is provided between the electroluminescent layer and the first electrode or between the electroluminescent layer and the second electrode.
- the material for the dielectric layer include barium titanate, silicon oxide, silicon nitride, antimony-doped tin oxide, yttrium oxide, and titanium oxide.
- the thickness of the dielectric layer is usually preferably 0.1 to 50 ⁇ m.
- the luminescent composition of the present invention has adhesiveness and can produce an electroluminescent sheet at room temperature without any particular heating, it can be produced using a general coating apparatus. That is, using a coating apparatus having at least a roll feeding part, a roll winding part, a coating part, and a bonding part, one of the first electrode and the second electrode wound in a roll shape is fed and applied. In the part, the luminescent composition of the present invention is applied to form an electroluminescent layer on the drawn-out electrode, and in the bonding part, the electroluminescent layer and the other electrode are bonded to obtain an electroluminescent sheet. It can manufacture by winding up the electroluminescent sheet
- the first electrode is fed out from the first roll feeding unit 1
- the luminescent composition is applied in the coating unit 2, and if necessary, dried in the drying unit 3.
- the second electrode is fed out from the roll feed-out unit 4, bonded at the bonding unit 5, and wound up at the roll winding unit 6.
- the coating method of a luminescent composition is not specifically limited, A die coat method and a knife coat method are preferable. Drying is usually carried out at 80 to 150 ° C. for 10 seconds to 5 minutes.
- GPC equipment High-speed GPC equipment "HLC-8020GPC” (manufactured by Tosoh Corporation) Column: “TSK guard column HXL-L”, “TSK Gel G400HXL”, “TSK Gel G3000HXL”, “TSK Gel G2000HXL” (manufactured by Tosoh Corporation, connected in this order) Mobile phase: Tetrahydrofuran Column temperature: 40 ° C Liquid feeding speed: 1.0 mL / min Detector: Refractive index differential detector (manufactured by Tosoh Corporation) 4). Measurement of Nitrogen Content The nitrogen content was measured by CHN elemental analysis using an elemental analyzer (“2400 ⁇ CHNS” [trade name], manufactured by PerkinElmer). 5.
- Measurement of softening temperature It measured according to A50 prescribed
- Measurement of adhesive strength The coating solution of the luminescent composition was applied to polyethylene terephthalate (Mitsubishi Resin, PET38 T-100 [trade name], 38 ⁇ m) to a thickness of 20 ⁇ m and dried (110 ° C., 2 minutes). , 180 degree peeling adhesive strength was measured according to JIS Z0237 (2006). 7).
- Measurement of Luminance Luminance was measured using a luminance meter (LS-100 [trade name] manufactured by Konica Minolta Co., Ltd.) at 250 V and 1500 Hz. 8).
- CR-V trade name
- Tg ⁇ 34 ° C.) and 11 parts by mass of methyl ethyl ketone as a solvent were added to prepare an
- the electroluminescent layer and the aluminum foil (first electrode) side of the first electrode substrate (aluminum foil (12 ⁇ m) -polyethylene terephthalate (50 ⁇ m) manufactured by Asia Aluminum Co., Ltd., Alpet [trade name])) are joined.
- an electroluminescent sheet was obtained.
- Table 1 shows the results of measuring the relative permittivity of the adhesive composition, measuring the adhesive strength of the luminescent composition, and measuring the luminance and illuminance and the light emitting surface state of the resulting electroluminescent sheet. Show.
- Example 2 The same procedure as in Example 1 was conducted except that 43 parts by mass of an acrylic ester copolymer as an adhesive resin material and 340 parts by mass of methyl ethyl ketone as a solvent were added to 100 parts by mass of cyanoethyl polyvinyl alcohol to obtain an adhesive composition solution. An electroluminescent sheet was obtained. The results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1 are shown in Table 1. Show.
- Example 3 The same procedure as in Example 1 was conducted except that 100 parts by mass of an acrylate copolymer as an adhesive resin material and 340 parts by mass of methyl ethyl ketone as a solvent were added to 100 parts by mass of cyanoethyl polyvinyl alcohol to obtain an adhesive composition solution.
- An electroluminescent sheet was obtained. Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- the electroluminescent sheet was obtained in the same manner as in Example 1 except that.
- Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- Example 7 Shown in Example 7 In place of cyanoethyl polyvinyl alcohol, cyanoethyl hydroxyethyl cellulose (CR-E manufactured by Shin-Etsu Chemical Co., Ltd., relative dielectric constant 17.10, mass average molecular weight 110,000, nitrogen content 12.4 mass%, softening temperature 55 ° C.) is used.
- An electroluminescent sheet was obtained in the same manner as in Example 1 except that.
- Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- Example 8 Instead of cyanoethyl polyvinyl alcohol, cyanoethyl pullulan (CR-S manufactured by Shin-Etsu Chemical Co., Ltd., relative dielectric constant 17.25, mass average molecular weight 49,000, nitrogen content 10.0 mass%, softening temperature 95 ° C.) was used. Except that, an electroluminescent sheet was obtained in the same manner as in Example 1. Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1. Shown in
- Example 9 As an adhesive resin material, instead of an acrylic ester copolymer, a styrene / ethylene / propylene block copolymer (Septon 2043 [trade name], manufactured by Kuraray Co., Ltd.), which is a rubber-based hydrocarbon elastomer, is 50 mass.
- the electroluminescent sheet was obtained in the same manner as in Example 1 except that a mixture of 50 parts by mass of a terpene phenol resin (trade name YS Polystar 2115 [trade name], manufactured by Yasuhara Chemical Co., Ltd.), which is a tackifier, was used. .
- Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- an adhesive resin material instead of an acrylic ester copolymer, 100 parts by mass of a polybutene-polyisobutene resin (Shin Nippon Chemical Co., Ltd., Everac SA400E [trade name]), which is a rubber-based hydrocarbon elastomer
- An electroluminescent sheet was obtained in the same manner as in Example 1 except that a mixture with 50 parts by mass of a tackifier (made by Arakawa Chemical Industries, Ltd., hydrogenated petroleum resin Alcon P-125 [trade name]) was used.
- Table 1 shows the results of measuring and evaluating the relative permittivity of the adhesive composition, the adhesive strength of the luminescent composition, the luminance, the illuminance and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1. Shown in Example 11 The luminescent composition produced in Example 1 on the ITO of the second electrode (ITO-polyethylene terephthalate (80 ⁇ m) substrate (manufactured by Oike Kogyo Co., Ltd.)) fed out using the coating apparatus shown in FIG.
- ITO-polyethylene terephthalate (80 ⁇ m) substrate manufactured by Oike Kogyo Co., Ltd.
- Table 1 shows the results of measuring and evaluating the relative permittivity, the adhesive strength of the luminescent composition, the luminance, the illuminance, and the light emitting surface state of the electroluminescent sheet in the same manner as in Example 1.
- Comparative Example 2 An electroluminescent sheet was obtained in the same manner as in Example 1, except that an acrylic ester copolymer was used as the adhesive composition solution, and only 340 parts by mass of methyl ethyl ketone was used as the solvent, and no compound having a cyanoethyl group was used.
- Table 1 shows the results obtained by measuring and evaluating the relative permittivity, the adhesive strength of the luminescent composition, the luminance, the illuminance, and the light emitting surface state of the obtained electroluminescent sheet in the same manner as in Example 1.
- the relative dielectric constant of Comparative Example 1 is the relative dielectric constant of a compound having a cyanoethyl group (cyanoethyl vinyl alcohol).
- the relative dielectric constant of Comparative Example 2 is the relative dielectric constant of the adhesive composition (acrylic ester copolymer).
- the electroluminescent sheets of Examples 1 to 11 had high luminance, as a result, high illuminance and good light emitting surface state.
- the electroluminescent sheet of Comparative Example 1 that does not contain an adhesive resin material has uneven luminance on the light emitting surface and low luminance and illuminance
- the electroluminescent sheet of Comparative Example 2 that does not contain a compound having a cyanoethyl group has a luminance. It was low.
- the luminescent composition of the present invention has adhesiveness and can be bonded to an electrode at room temperature, so that it can be efficiently produced at low cost and can be mass-produced.
- An electroluminescent sheet having high luminance and reliability can be provided. For this reason, for example, it is extremely useful as a practical luminescent composition and electroluminescent sheet suitable for production of inorganic EL elements and the like.
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Abstract
Description
また、特許文献2には発光層に誘電率の高い樹脂バインダーを用いることで、高輝度で信頼性の高い電界発光シートを提供しているが、該樹脂バインダーには常温での粘着性がなく、電極と貼合する際、加熱貼合を行う必要があり、基材及び電極にダメージを与える恐れがあるばかりか、生産効率を著しく低下させるといった問題点がある。
このような状況下において、加熱する必要が無く、常温で生産可能であり、生産性が高く、低コストで大量生産が可能な電界発光シート及びその製造方法が求められていた。
(1)(A)シアノエチル基を有する化合物、(B)粘着性樹脂材料、及び(C)電界発光体を含む発光性組成物であって、(A)成分100質量部に対する(B)成分の量が1~1000質量部である発光性組成物、
(2)(B)成分が、(a)ガラス転移温度が-70~5℃である粘着性樹脂材料及び(b)ゴム状炭化水素系エラストマーと粘着付与剤とを含む粘着性樹脂材料から選ばれる少なくとも1種を含む前記(1)に記載の発光性組成物、
(3)(A)成分の質量平均分子量が10,000~200,000である前記(1)に記載の発光性組成物、
(4)(A)成分及び(B)成分の合計100質量部に対する(C)成分の量が0.5~600質量部である前記(1)に記載の発光性組成物、
(5)(A)成分及び(B)成分の混合物に、(C)成分を混練分散してなる前記(1)に記載の発光性組成物、
(6)(A)成分及び(B)成分の混合物の比誘電率が6以上である前記(5)に記載の発光性組成物、
(7)少なくとも第1電極、電界発光層、第2電極がこの順に積層されてなり、第1電極又は第2電極のうち少なくとも一方が透明であり、上記電界発光層が前記(1)~(6)のいずれかに記載の発光性組成物を用いて形成されてなる電界発光シート、
(8)少なくともロール繰り出し部、ロール巻き取り部、塗布部及び貼合部を有する塗工装置を用い、ロール状に巻き取られた第1電極又は第2電極のいずれか一方の電極を繰り出し、塗布部において前記(1)~(6)のいずれかに記載の発光性組成物を塗布して、繰り出された電極に電界発光層を形成し、貼合部において、電界発光層ともう一方の電極を貼合して電界発光シートとし、得られた電界発光シートを巻き取り部で巻き取ることを特徴とする前記(7)に記載の電界発光シートの製造方法、
を提供するものである。
(B)成分の量が1質量部未満であると、粘着性を有する発光性組成物が得られず、後述する電極との間で部分的な密着不良による発光ムラが生じて発光輝度が低下し、1000質量部を超えると、十分な発光輝度が得られない。
また、(A)成分及び(B)成分の合計100質量部に対する(C)成分の量は、0.5~600質量部が好ましく、1~400質量部であることがより好ましい。(C)成分の量が、0.5質量部以上であれば、発光性組成物として十分な機能(発光機能)が得られ、600質量部以下であれば、電極との貼合に十分な粘着性を得ることができる。
(A)成分としては、質量平均分子量が10,000~200,000であるものが好ましく、20,000~150,000であるものがより好ましい。質量平均分子量がこの範囲であれば、シアノエチル基を有する化合物がバインダーとしても良好に機能し、また、適度な柔軟性を有する電界発光層を形成することができる。
また、シアノエチル基を有する化合物の軟化温度は、20~150℃が好ましい。軟化温度がこの範囲にあると、電界発光体を含んでいても適度な柔軟性を有する電界発光層を形成することができる。軟化温度は、JIS K7206に準じて測定する。
(a)成分としては、例えば、アクリルポリマー等のアクリル系樹脂が挙げられる。粘着性を有するアクリル系樹脂としては、エステル部分のアルキル基の炭素数が1~20の(メタ)アクリル酸エステルと、所望により用いられるカルボキシル基などの官能基を有する単量体及び他の単量体との共重合体、すなわち(メタ)アクリル酸エステル共重合体を好ましく挙げることができる。本発明において、「(メタ)アクリル酸」とは「アクリル酸」及び「メタアクリル酸」の両方を意味する。
ここで、エステル部分のアルキル基の炭素数が1~20の(メタ)アクリル酸エステルの例としては、(メタ)アクリル酸メチル、(メタ)アクリル酸エチル、(メタ)アクリル酸プロピル、(メタ)アクリル酸ブチル、(メタ)アクリル酸ペンチル、(メタ)アクリル酸ヘキシル、(メタ)アクリル酸シクロヘキシル、(メタ)アクリル酸2-エチルヘキシル、(メタ)アクリル酸イソオクチル、(メタ)アクリル酸デシル、(メタ)アクリル酸ドデシル、(メタ)アクリル酸ミリスチル、(メタ)アクリル酸パルミチル、(メタ)アクリル酸ステアリルなどが挙げられる。これらは単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
また、所望により用いられる他の単量体の例としては、酢酸ビニル、プロピオン酸ビニルなどのビニルエステル類;エチレン、プロピレン、イソブチレンなどのオレフィン類;塩化ビニル、ビニリデンクロリドなどのハロゲン化オレフィン類;スチレン、α-メチルスチレンなどのスチレン系単量体;ブタジエン、イソプレン、クロロプレンなどのジエン系単量体;アクリロニトリル、メタクリロニトリルなどのニトリル系単量体;アクリルアミド、N-メチルアクリルアミド、N,N-ジメチルアクリルアミドなどのアクリルアミド類などが挙げられる。これらは単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
なお、本発明において、ガラス転移温度(Tg)は下記測定方法1により求めたものである。
(測定方法1)
JIS K 7121に準拠し、入力補償示差走査熱量測定装置を用いて、-80℃から250℃の温度範囲で、捕外ガラス転移開始温度を測定し、Tgを求めた。
前記ジエン系ゴム状エラストマーとしては、例えば天然ゴム、合成イソプレンゴム、ブタジエンゴム、ニトリルゴム、水素化ニトリルゴム、クロロプレンゴムなどが挙げられ、オレフィン系ゴム状エラストマーとしては、例えばポリイソブチレン、ポリブテン、ブチルゴム、エチレン・プロピレン共重合体エラストマー、エチレン・1-ブテン共重合体エラストマー、エチレン・プロピレン・1-ブテン共重合体エラストマー、エチレン・1-ヘキセン共重合体エラストマー、エチレン・1-オクテン共重合体エラストマー、エチレン・スチレン共重合体エラストマー、エチレン・ノルボルネン共重合体エラストマー、プロピレン・1-ブテン共重合体エラストマー、エチレン・プロピレン・非共役ジエン共重合体エラストマー、エチレン・1-ブテン-非共役ジエン共重合体エラストマー、エチレン・プロピレン・1-ブテン-非共役ジエン共重合体エラストマーなどが挙げられる。
一方、スチレン系ゴム状エラストマーとしては、例えばスチレン・エチレン・プロピレンブロック共重合体、スチレン・ブタジエンブロック共重合体、スチレン・ブタジエン・スチレンブロック共重合体、スチレン・イソプレンブロック共重合体、スチレン・イソプレン・スチレンブロック共重合体、スチレン・ブタジエンブロック共重合体の水素添加物、スチレン・ブタジエン・スチレンブロック共重合体の水素添加物、スチレン・イソプレンブロック共重合体の水素添加物、スチレン・イソプレン・スチレンブロック共重合体の水素添加物などを挙げることができる。本発明においては、ゴム状炭化水素系エラストマーとして、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
なお、本発明において、比誘電率は、下記測定方法2により求めたものである。
(測定方法2)
組成物をシート状膜厚100μmに製膜した(サイズ:5cm×5cm)。インピーダンスアナライザーを用いて1MHzでの静電容量(Cp)を測定し、以下に示す式に代入し、比誘電率(ε)を求めた。
ε=(d×Cp)/(π×r2×ε0)
[d:膜厚(m)、r:電極半径(2.5×10-3m)、ε0:真空の誘電率(8.854×10-12)]
本発明の発光性組成物は、(A)、(B)、(C)成分を、常法により分散混合すれば良いが、(A)成分及び(B)成分の混合物(以下、(A)成分及び(B)成分の混合物を粘着性組成物という)に、(C)成分を混練分散してなるものであると、生産効率が良く好ましい。また、混練分散する際には、溶剤を添加してもよい。溶剤としては、メチルエチルケトン、メチルイソブチルケトンなどを使用することができる。溶剤の量としては、粘着性組成物100質量部に対して、20~400質量部が好ましい。
第1電極及び第2電極としては、どちらか一方が透明性を有していれば特に制約は無いが、酸化インジウムスズ(ITO)、酸化インジウム、酸化スズ等の金属酸化膜の薄膜、貴金属薄膜などの超薄膜、ポリアニリン、ポリチオフェン等の導電性ポリマーなどの有機物などの透明電極材料、Al、Cu、Niなどの金属箔、カーボンブラックなどの導電性フィラーを樹脂中に分散させた樹脂フィルム等が挙げられる。
電界発光層の厚みは、通常0.1~200μmであり、1~100μmが好ましい。
また、本発明の電界発光シートにおいては、誘電体層を設けることが好ましい。誘電体層は、電界発光層と第1電極の間、又は電界発光層と第2電極の間に設けられる。
誘電体層の材料としては、例えば、チタン酸バリウム、酸化シリコン、窒化シリコン、アンチモンドープ酸化スズ、酸化イットリウム、酸化チタン等が挙げられる。誘電体層の厚みは通常0.1~50μmであると好ましい。
具体的には、例えば、図1に示すように、第1ロール繰り出し部1から第1電極を繰り出し、塗布部2において発光性組成物を塗布し、必要により乾燥部3で乾燥し、第2ロール繰り出し部4から第2電極を繰り出し、貼合部5で貼り合わせて、ロール巻取り部6で巻き取る。発光性組成物の塗布方法は特に限定されないが、ダイコート法、ナイフコート法が好ましい。乾燥は、通常80~150℃で10秒~5分間行う。
なお、実施例及び比較例で測定した物性値及び評価は以下のようにして行った。
1.ガラス転移温度(Tg)の測定
入力補償示差走査熱量測定装置として、パーキンエルマー社製、Pyrisl DSC[商品名]を用い、上記測定方法1に沿って測定した。
2.比誘電率の測定
(A)シアノエチル基を有する化合物のメチルエチルケトン溶液、(B)粘着性組成物のメチルエチルケトン溶液、及び(A)シアノエチル基を有する化合物及び(B)粘着性組成物の混合物(粘着性樹脂材料)のメチルエチルケトン溶液を、それぞれ剥離フィルム(リンテック(株)製、「PET-3811」[商品名])に塗布、乾燥し、剥離フィルムを除去して厚さ100μmのシート状に製膜し、インピーダンスアナライザーとして、HEWLETT PACKARD社製、4194A[商品名]を用い、上記測定方法2に沿って測定した。なお、乾燥は、110℃で2分間行った。
3.質量平均分子量の測定
ゲルパーミエーションクロマトグラフィー(GPC)法により測定した(標準ポリスチレン換算)。使用した装置、条件等を以下に示す。
GPC装置:高速GPC装置「HLC-8020GPC」(東ソー(株)製)
カラム:「TSK guard column HXL-L」、「TSK Gel G400HXL」、「TSK Gel G3000HXL」、「TSK Gel G2000HXL」(東ソー(株)製、この順で装置に連結)
移動相:テトラヒドロフラン
カラム温度:40℃
送液速度:1.0mL/min
検出器:屈折率示差検出器(東ソー(株)製)
4.窒素含有率の測定
CHN元素分析法により、元素分析装置(パーキンエルマー社製、「2400・CHNS」[商品名])を用いて測定した。
5.軟化温度の測定
JIS K7206に規定されるA50に準じて測定した。
6.粘着力の測定
発光性組成物の塗工液をポリエチレンテレフタレート(三菱樹脂社製、PET38 T-100[商品名]、38μm)に厚み20μmとなるように塗布、乾燥(110℃、2分間)させ、JIS Z0237(2006)に準じて180度剥離粘着力を測定した。
7.輝度の測定
輝度計(コニカミノルタ社製、LS-100[商品名])を用いて、250V,1500Hzで駆動時の発光輝度を測定した。
8.照度の測定
250V,1500Hzで駆動時、発光面から10cm離れた距離の照度を、色彩照度計(コニカミノルタ社製、CL-200[商品名])を用いて測定した。
9.発光面状態の評価
250V,1500Hzで駆動時の発光面の発光ムラを目視によって、以下のように確認した。
良好:面前体が均一な発光
発光面ムラ:発光面に明るさムラ、非発光部が見られる
(A)シアノエチル基を有する化合物としてシアノエチルポリビニルアルコール(信越化学株式会社製CR-V[商品名]、比誘電率17.76、質量平均分子量60,000、窒素含有率12.9質量%、軟化温度30℃)100質量部に対して(B)粘着性樹脂材料としてアクリル酸エステル共重合体(アクリル酸ブチル/アクリル酸=80/20(質量比)の共重合体、質量平均分子量70万、Tg=-34℃)を11質量部、及び溶剤としてメチルエチルケトン340質量部を加え粘着性組成物溶液を調製した。
次に、前記粘着性組成物溶液の固形分100質量部に対し、(C)電界発光体としてZnS・CuからなるEL蛍光体(オスラムシルバニア社製、GG25 BlueGreen[商品名])400質量部を混合し発光性組成物の塗工液とし、第2電極基材(ITO-ポリエチレンテレフタレート(80μm)(尾池工業株式会社製))のITO(第2電極)上に膜厚55μm(乾燥後)となるように塗布し、110℃で2分間乾燥して電界発光層を有する第1積層体を得た。その後、電界発光層と、第1電極基材(アルミニウム箔(12μm)-ポリエチレンテレフタレート(50μm)アジアアルミ株式会社製、アルペット[商品名]))のアルミニウム箔(第1電極)側とを接合し、電界発光シートを得た。
粘着性組成物について比誘電率を測定した結果、発光性組成物について粘着力を測定した結果、得られた電界発光シートについて、輝度、照度の測定及び発光面状態を評価した結果を表1に示す。
シアノエチルポリビニルアルコール100質量部に対して粘着性樹脂材料としてアクリル酸エステル共重合体を43質量部、及び溶剤としてメチルエチルケトン340質量部を加え粘着性組成物溶液とした以外は実施例1と同様にして電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについて輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例3
シアノエチルポリビニルアルコール100質量部に対して粘着性樹脂材料としてアクリル酸エステル共重合体を100質量部、及び溶剤としてメチルエチルケトン340質量部を加え粘着性組成物溶液とした以外は実施例1と同様にして電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例4
粘着性樹脂材料として、実施例1のアクリル酸エステル共重合体の代わりに、アクリル酸ブチル/アクリル酸=90/10(質量比)の共重合体(質量平均分子量70万、Tg=-45℃)を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例5
粘着性樹脂材料として、実施例1のアクリル酸エステル共重合体の代わりに、アクリル酸ブチル/2-ヒドロキシエチルアクリレート=95/5(質量比)の共重合体(質量平均分子量71万、Tg=-52℃)を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
粘着性樹脂材料として、実施例1のアクリル酸エステル共重合体の代わりに、2-エチルヘキシルアクリレート/エチルアクリレート/酢酸ビニル/アクリルアミド=56/27/17/2の共重合体(質量平均分子量70万、Tg=-56℃)を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例7
シアノエチルポリビニルアルコールの代わりに、シアノエチルヒドロキシエチルセルロース(信越化学株式会社製CR-E、比誘電率17.10、質量平均分子量110,000、窒素含有率12.4質量%、軟化温度55℃)を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例8
シアノエチルポリビニルアルコールの代わりに、シアノエチルプルラン(信越化学株式会社製CR-S、比誘電率17.25、質量平均分子量49,000、窒素含有率10.0質量%、軟化温度95℃)を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
粘着性樹脂材料として、アクリル酸エステル共重合体の代わりに、ゴム系炭化水素系エラストマーである、スチレン・エチレン・プロピレンブロック共重合体(セプトン2043[商品名],(株)クラレ製)50質量部と粘着付与剤であるテルペンフェノール樹脂(商品名YSポリスター2115[商品名]、ヤスハラケミカル(株)製)50質量部との混合物を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例10
粘着性樹脂材料として、アクリル酸エステル共重合体の代わりに、ゴム系炭化水素系エラストマーである、ポリブテン-ポリイソブテン系樹脂(新日本化学株式会社製、エバータックSA400E[商品名])100質量部と粘着付与剤(荒川化学工業株式会社製、水素添加石油樹脂アルコンP-125[商品名])50質量部との混合物を用いた以外は実施例1と同様に電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
実施例11
図1に示す塗工装置を用い、繰り出された第2電極(ITO-ポリエチレンテレフタレート(80μm)基材(尾池工業株式会社製))のITO上に、実施例1で製造した発光性組成物を膜厚55μm(乾燥後)となるように塗布、乾燥(110℃、2分間)し電界発光層を形成し、貼合部において第1電極(アルミニウム箔(12μm)-ポリエチレンテレフタレート(50μm)積層基材(アジアアルミ株式会社製、アルペット[商品名]))のアルミニウム箔と電界発光層とを貼合し電界発光シートを得た。
実施例1と同様にして、粘着性組成物の比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
シアノエチルポリビニルアルコール(信越化学株式会社製CR-V[商品名]、前出)100質量部、溶剤としてメチルエチルケトン340質量部、ZnS・CuからなるEL蛍光体(オスラムシルバニア社製、GG25 BlueGreen[商品名])400質量部を混合し、粘着性樹脂材料を含まない発光性組成物を作製した以外は、実施例1と同様にして電界発光シートを得た。
実施例1と同様にして、比誘電率、発光性組成物について粘着力、電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
比較例2
粘着性組成物溶液としてアクリル酸エステル共重合体、及び溶剤としてメチルエチルケトン340質量部のみを使用し、シアノエチル基を有する化合物を用いなかった以外は実施例1と同様にして電界発光シートを得た。
実施例1と同様にして、比誘電率、発光性組成物について粘着力、得られた電界発光シートについての輝度、照度及び発光面状態を、測定・評価した結果を表1に示す。
このため、例えば、無機EL素子などの生産に適した、実用的な発光性組成物、電界発光シートとして極めて有用である。
2.塗布部
3.乾燥部
4.第2ロール繰り出し部
5.貼合部
6.ロール巻取り部
Claims (8)
- (A)シアノエチル基を有する化合物、(B)粘着性樹脂材料、及び(C)電界発光体を含む発光性組成物であって、(A)成分100質量部に対する(B)成分の量が1~1000質量部である発光性組成物。
- (B)成分が、(a)ガラス転移温度が-70~5℃である粘着性樹脂材料及び(b)ゴム状炭化水素系エラストマーと粘着付与剤とを含む粘着性樹脂材料から選ばれる少なくとも1種を含む請求項1に記載の発光性組成物。
- (A)成分の質量平均分子量が10,000~200,000である請求項1に記載の発光性組成物。
- (A)成分及び(B)成分の合計100質量部に対する(C)成分の量が0.5~600質量部である請求項1に記載の発光性組成物。
- (A)成分及び(B)成分の混合物に、(C)成分を混練分散してなる請求項1に記載の発光性組成物。
- (A)成分及び(B)成分の混合物の比誘電率が6以上である請求項5に記載の発光性組成物。
- 少なくとも第1電極、電界発光層、第2電極がこの順に積層されてなり、第1電極又は第2電極のうち少なくとも一方が透明であり、上記電界発光層が請求項1~6のいずれかに記載の発光性組成物を用いて形成されてなる電界発光シート。
- 少なくともロール繰り出し部、ロール巻き取り部、塗布部及び貼合部を有する塗工装置を用い、ロール状に巻き取られた第1電極又は第2電極のいずれか一方の電極を繰り出し、塗布部において請求項1~6のいずれかに記載の発光性組成物を塗布して、繰り出された電極に電界発光層を形成し、貼合部において、電界発光層ともう一方の電極を貼合して電界発光シートとし、得られた電界発光シートを巻き取り部で巻き取ることを特徴とする請求項7に記載の電界発光シートの製造方法。
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| EP10826564.6A EP2496055B1 (en) | 2009-10-29 | 2010-10-19 | Light-emitting composition, electroluminescent sheet, and method for producing same |
| US13/504,691 US8648529B2 (en) | 2009-10-29 | 2010-10-19 | Light-emitting composition, electroluminescent sheet, and method for producing same |
| KR1020127010977A KR101775739B1 (ko) | 2009-10-29 | 2010-10-19 | 발광성 조성물, 전계 발광 시트 및 그 제조 방법 |
| JP2011538363A JP5706828B2 (ja) | 2009-10-29 | 2010-10-19 | 発光性組成物、電界発光シート及びその製造方法 |
| CN201080048108.8A CN102630391B (zh) | 2009-10-29 | 2010-10-19 | 发光性组合物和电致发光片及其制备方法 |
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| Country | Link |
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| US (1) | US8648529B2 (ja) |
| EP (1) | EP2496055B1 (ja) |
| JP (1) | JP5706828B2 (ja) |
| KR (1) | KR101775739B1 (ja) |
| CN (1) | CN102630391B (ja) |
| TW (1) | TWI471402B (ja) |
| WO (1) | WO2011052432A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013005791A1 (ja) * | 2011-07-05 | 2013-01-10 | デクセリアルズ株式会社 | 蛍光体シート形成用樹脂組成物 |
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| JP5539659B2 (ja) * | 2008-05-22 | 2014-07-02 | リンテック株式会社 | 発光性組成物、それを用いる無機系電界発光シート及びその製造方法 |
| CN112453629B (zh) * | 2020-11-17 | 2022-06-28 | 赢诺自动机械(上海)有限公司 | 一种发光片生产设备及其生产工艺 |
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- 2010-10-19 US US13/504,691 patent/US8648529B2/en active Active
- 2010-10-19 EP EP10826564.6A patent/EP2496055B1/en active Active
- 2010-10-19 KR KR1020127010977A patent/KR101775739B1/ko active Active
- 2010-10-19 WO PCT/JP2010/068384 patent/WO2011052432A1/ja not_active Ceased
- 2010-10-19 CN CN201080048108.8A patent/CN102630391B/zh active Active
- 2010-10-27 TW TW99136639A patent/TWI471402B/zh active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2496055B1 (en) | 2016-01-06 |
| JPWO2011052432A1 (ja) | 2013-03-21 |
| US20120242220A1 (en) | 2012-09-27 |
| KR20120095886A (ko) | 2012-08-29 |
| US8648529B2 (en) | 2014-02-11 |
| TWI471402B (zh) | 2015-02-01 |
| JP5706828B2 (ja) | 2015-04-22 |
| TW201120183A (en) | 2011-06-16 |
| KR101775739B1 (ko) | 2017-09-06 |
| CN102630391B (zh) | 2016-05-11 |
| EP2496055A4 (en) | 2013-11-20 |
| EP2496055A1 (en) | 2012-09-05 |
| CN102630391A (zh) | 2012-08-08 |
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