WO2013005794A1 - 蛍光体シート形成用組成物 - Google Patents

蛍光体シート形成用組成物 Download PDF

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Publication number
WO2013005794A1
WO2013005794A1 PCT/JP2012/067182 JP2012067182W WO2013005794A1 WO 2013005794 A1 WO2013005794 A1 WO 2013005794A1 JP 2012067182 W JP2012067182 W JP 2012067182W WO 2013005794 A1 WO2013005794 A1 WO 2013005794A1
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Prior art keywords
phosphor
phosphor sheet
forming
composition
forming composition
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PCT/JP2012/067182
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English (en)
French (fr)
Japanese (ja)
Inventor
伊藤　靖
祥史 上野
啓史 谷
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デクセリアルズ株式会社
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Publication of WO2013005794A1 publication Critical patent/WO2013005794A1/ja

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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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7729—Chalcogenides
    • C09K11/7731—Chalcogenides with alkaline earth metals
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7734—Aluminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
    • C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
    • C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
    • C08F299/065—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes from polyurethanes with side or terminal unsaturations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/422—Luminescent, fluorescent, phosphorescent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil

Definitions

  • the present invention relates to a phosphor sheet-forming composition
  • a phosphor sheet-forming composition comprising a film-forming composition and a powdery phosphor that emits fluorescence when irradiated with excitation light.
  • the present invention is intended to solve the above-described conventional problems, exhibits good light resistance, low light absorption for visible light, and suppresses deterioration of the phosphor due to moisture while using a low-cost material.
  • An object of the present invention is to provide a phosphor sheet-forming composition capable of providing the phosphor sheet thus obtained at low cost.
  • the present inventors show good light resistance, low light absorption for visible light, and available at low cost. It has been found that the above-mentioned object can be achieved by using a mold compound, and the present invention has been completed.
  • the present invention is a phosphor sheet-forming composition
  • a phosphor sheet-forming composition comprising a film-forming composition and a powdered phosphor that emits fluorescence when irradiated with excitation light
  • a film forming composition provides a phosphor sheet forming composition containing a photocurable compound.
  • the present invention is a phosphor sheet in which a phosphor layer that emits fluorescence when irradiated with excitation light is sandwiched between a pair of transparent substrates, and the phosphor layer is for forming the phosphor sheet of the present invention described above.
  • a phosphor sheet formed by forming a film of the composition, and a light-emitting device having the phosphor sheet and an excitation light source that emits excitation light to irradiate the phosphor sheet.
  • the phosphor sheet-forming composition of the present invention is excellent in light resistance and low in light absorption for visible light compared to thermoplastic resins, etc., among many resins and polymerizable compounds as a film-forming composition.
  • a photocurable compound that can provide a resin and is available at a relatively low cost is used. Therefore, the phosphor sheet-forming composition of the present invention can provide a phosphor sheet that is excellent in light resistance, has low light absorbability with respect to visible light, and suppresses phosphor modification due to moisture at low cost. . Even when the phosphor sheet is used for a long period of time, the chromaticity deviation width is small, and the emission spectrum intensity is not greatly lowered.
  • FIG. 1 is a cross-sectional view of a single-layer phosphor sheet.
  • FIG. 2 is a cross-sectional view of a two-layer phosphor sheet.
  • FIG. 3 is a cross-sectional view of a preferred single-layer phosphor sheet.
  • FIG. 4 is a cross-sectional view of a preferred two-layer phosphor sheet.
  • FIG. 5 is a cross-sectional view of the sealing film.
  • the phosphor sheet-forming composition of the present invention contains a film-forming composition and a powdered phosphor that emits fluorescence when irradiated with excitation light.
  • the film-forming composition contains a photocurable compound.
  • the reason for using the photo-curing compound is that the resin produced during photo-curing adheres well to the phosphor surface, exhibits superior light resistance and low water absorption compared to thermoplastic resins, and is low in cost. Because it is available at. As a result, it is possible to prevent the phosphor from being altered by moisture.
  • a photocurable monomer can be used in combination with the photocurable compound as a diluent, it is not necessary to use a solvent such as toluene. Therefore, compared with the case where toluene etc. are used, the density
  • the photocurable compound constituting the film-forming composition preferably contains a photocurable (meth) acrylate.
  • the photocurable (meth) acrylate has an ester group that exhibits a water trapping ability. Therefore, by using the photocurable (meth) acrylate, it is possible to capture more moisture that has entered the phosphor sheet, and it is possible to further prevent the phosphor from being altered by moisture.
  • Examples of such a photo-curable (meth) acrylate include urethane (meth) acrylate, polyester (meth) acrylate, and epoxy (meth) acrylate.
  • urethane (meth) acrylate can be preferably used from the viewpoint of heat resistance.
  • (meth) acrylate” includes acrylate and methacrylate.
  • a reaction product of a polyol preferably polyether polyol, polyolefin polyol, polyester polyol or polycarbonate polyol
  • a diisocyanate compound preferably isophorone diisocyanate
  • a hydroxyalkyl (meth) acrylate preferably , 2-hydroxypropyl acrylate
  • the film-forming composition usually contains a photopolymerization initiator.
  • photopolymerization initiators include radical photopolymerization initiators such as alkylphenone photopolymerization initiators, acylphosphine oxide photopolymerization initiators, titanocene photopolymerization initiators, and oxime ester photopolymerization initiators. And oxyphenyl acetate ester photopolymerization initiators; cationic photopolymerization initiators such as diazonium photopolymerization initiators, iodonium photopolymerization initiators, sulfonium photopolymerization initiators, and the like.
  • the amount of these photopolymerization initiators used is preferably 0.1 to 10 parts by mass, more preferably 1 to 10 parts by mass with respect to 100 parts by mass of the photocurable compound.
  • a phosphor in a powder form (usually having an average particle diameter of 3 to 20 ⁇ m) that emits fluorescence (fluorescence having a wavelength longer than that of the excitation light) when irradiated with excitation light is used as the phosphor.
  • This phosphor is a sulfide-based phosphor, an oxide phosphor, or a mixed phosphor thereof.
  • the excitation light light having a wavelength capable of exciting the phosphor to be used and emitting fluorescence may be selected as appropriate.
  • the phosphor sheet emits white light, it is preferable to use blue light having a blue fluorescent peak with a wavelength of 440 to 490 nm.
  • a blue light source a known blue LED is preferably used.
  • an oxide phosphor having a red fluorescence peak with a wavelength of 590 to 620 nm by irradiation with blue excitation light preferably CaS: Eu, (BaSr) 3 SiO 5 : Eu, or wavelength 530 by irradiation with blue excitation light.
  • a sulfur-based phosphor having a green fluorescence peak of ⁇ 550 nm, preferably SrGa 2 S 4 : Eu can be mentioned.
  • the mixture of said fluorescent substance as fluorescent substance.
  • an oxide phosphor having a red fluorescence peak with a wavelength of 590 to 620 nm by irradiation with blue excitation light and a green fluorescence peak with a wavelength of 530 to 550 nm by irradiation with blue excitation light is preferable to use.
  • a mixed phosphor with a sulfide-based phosphor having A particularly preferred combination is a mixed phosphor of (BaSr) 3 SiO 5 : Eu that emits red fluorescence and SrGa 2 S 4 : Eu that emits green fluorescence.
  • the amount is preferably 1 to 10 parts by mass, more preferably 3 to 6 parts by mass with respect to 100 parts by mass of the film-forming composition.
  • the phosphor sheet-forming composition of the present invention is blended with other light-transmitting compounds such as (meth) acrylic monomers and oligomers, coloring pigments and the like within a range not impairing the effects of the present invention. be able to.
  • the phosphor sheet-forming composition of the present invention can be prepared by mixing a film-forming composition and a powdery phosphor by a conventional method.
  • the phosphor sheet of the present invention is a phosphor sheet 10 in which a phosphor layer 1 that emits fluorescence when irradiated with excitation light is a single layer sandwiched between a pair of transparent substrates 2,
  • the phosphor layer 1 is formed by depositing the phosphor sheet forming composition of the present invention described above.
  • FIG. 1 shows an example in which the phosphor layer 1 is a single layer
  • a laminated phosphor having a two-layer structure in which two phosphor layers 1 a and 1 b are laminated via a transparent separator 3.
  • the layer 20 may be used.
  • the pair of transparent base materials 2a and 2b are sandwiched.
  • one of the phosphor layers 1a and 1b emits red light containing an oxide phosphor (preferably (BaSr) 3 SiO 5 : Eu) having a red fluorescence peak with a wavelength of 590 to 620 nm when irradiated with blue excitation light.
  • an oxide phosphor preferably (BaSr) 3 SiO 5 : Eu
  • a phosphor containing a sulfur-based phosphor preferably SrGa 2 S 4 : Eu
  • SrGa 2 S 4 : Eu sulfur-based phosphor having a green fluorescence peak with a wavelength of 530 to 550 nm by irradiation with blue excitation light. It is preferable to form from the sheet forming composition.
  • the thickness of the phosphor layers 1, 1a, 1b is preferably 20 to 150 ⁇ m, more preferably 60 to 120 ⁇ m.
  • thermoplastic resin film having a thickness of 10 to 100 ⁇ m, a heat or a photocurable resin film can be used.
  • a polyester film, a polyamide film, a polyimide film, a polysulfone film, a triacetyl cellulose film, a polyolefin film, and the like can be given.
  • the surfaces of these films may be subjected to corona discharge treatment, silane coupling agent treatment or the like, if necessary.
  • the phosphor sheet 10 in FIGS. 1 and 2 can be further sealed from both sides with two sealing films 30a and 30b as shown in FIGS. preferable. Thereby, the penetration
  • sealing films 30a and 30b those in which an adhesive layer 32 is formed on a base film 31 can be used as shown in FIG. Further, in order to improve the water vapor barrier property of the sealing films 30a and 30b, a silicon oxide layer 33 having a thickness of 5 to 20 nm is deposited on the surface of the base film 31 on the adhesive layer 32 side or on the opposite surface. May be formed. In the latter case, the surface protective film 34 may be laminated on the silicon oxide layer 33 via an adhesive layer (not shown).
  • the base film 31 and the surface protection film 34 can be appropriately selected from the films exemplified for the transparent substrates 2a and 2b and the transparent separator 3 already described.
  • the adhesive layer at the time of laminating the adhesive layer 32 and the surface protective film 34 it can be appropriately selected from known adhesives such as urethane adhesives and acrylic adhesives.
  • the thickness of the adhesive layer 32 is usually 10 to 50 ⁇ m.
  • a single-layer phosphor sheet 10 of the present invention shown in FIG. 1 forms a phosphor layer 1 by forming a phosphor sheet-forming composition on a transparent substrate 2 by a conventional method, and separates the phosphor layer 1 thereon. It can manufacture by laminating
  • the photocurable compound contained in the phosphor layer 1 must be photocured (polymerized) by irradiating active energy rays such as ultraviolet rays, for example. In this case, the photocurable compound is active against the phosphor layer 1. You may irradiate an energy ray directly, or you may irradiate an active energy ray through the transparent base material 2 or the sealing film 30a or 30b.
  • the two-layer phosphor sheet 10 of the present invention shown in FIG. 2 forms a phosphor layer 1a by forming a phosphor sheet-forming composition on a transparent substrate 2a by a conventional method, and a transparent layer is formed thereon.
  • a separator 3 is laminated, and another phosphor sheet forming composition containing a phosphor different from the above phosphor sheet forming composition is formed by a conventional method to form a phosphor layer 1b. It can manufacture by laminating
  • the phosphor sheet 10 having the structure shown in FIG. 4 can be manufactured by sandwiching both surfaces of the phosphor sheet 10 with the sealing films 30a and 30b so that the adhesive layer 32 is on the inner side and thermocompressing the whole. it can.
  • the photopolymerizable compounds contained in the phosphor layers 1a and 1b need to be photocured (polymerized) by irradiating active energy rays such as ultraviolet rays, for example.
  • active energy rays such as ultraviolet rays, for example.
  • the phosphor layers 1a and 1b The active energy ray may be directly irradiated to the transparent substrate 2a, 2b, the transparent separator 3 and / or the active film 30a, 30b.
  • the phosphor sheet of the present invention described above can be preferably applied as the phosphor sheet of a light emitting device having a phosphor sheet and an excitation light source that emits excitation light applied to the phosphor sheet.
  • Other components for example, a light diffusing member
  • This light emitting device can itself be used as a lighting device. It can also be used as a backlight for liquid crystal display elements.
  • Example 1 (Production of single-layer phosphor sheet) (Preparation of composition for forming green-red mixed phosphor sheet) 100 parts by mass of photocurable urethane methacrylate (Aronix 1600M, Toa Gosei Co., Ltd.), 0.5 parts by mass of photopolymerization initiator (BASF, Darocur 1173), SrGa 2 S 4 with an average particle size of 6 ⁇ m: Eu A phosphor sheet-forming composition was prepared by uniformly dispersing 1.5 parts by mass of (sulfurized green phosphor) and (BaSr) 3 SiO 5 : Eu (oxide red phosphor).
  • a phosphor sheet-forming composition was applied to a polyethylene terephthalate film (T11, Toray Industries, Inc.) having a thickness of 25 ⁇ m so as to have a dry thickness of 115 ⁇ m, and then irradiated with ultraviolet rays (7000 mJ / cm 2 ).
  • a phosphor layer was formed by polymerizing urethane methacrylate.
  • a polyethylene terephthalate film (A4300, Toyobo Co., Ltd.) having a thickness of 38 ⁇ m is laminated on the phosphor layer, and a thermocompression treatment (100 ° C., 0.2 Pa) is performed to obtain a phosphor sheet having the structure of FIG. It was.
  • a polyolefin adhesive layer (Septon V9827, Kuraray Co., Ltd.) having a thickness of 20 to 25 ⁇ m was formed on one surface of a polyethylene terephthalate film (T-11, Toray Industries, Inc.) having a thickness of 25 ⁇ m.
  • the sealing film was created by laminating
  • the surface protective film has a thickness of 1 to 2 ⁇ m on the silicon oxide deposited layer of a 12 ⁇ m thick polyethylene terephthalate film (Tech Barrier, Mitsubishi Plastics, Inc.) on which a silicon oxide deposited layer having a thickness of about 20 nm is formed. It was created by forming a urethane adhesive layer. The moisture permeability of the obtained sealing film was 0.3 g / m 2 ⁇ 24 hr ⁇ atm.
  • the phosphor sheet sealed with the sealing film was obtained by disposing the sealing film on both surfaces of the phosphor sheet having the structure of FIG. 1 and performing thermocompression treatment (100 ° C., 0.2 Pa).
  • Example 2 (Production of two-layer phosphor sheet) (Preparation of composition for forming green phosphor sheet) 100 parts by mass of photocurable urethane methacrylate (Aronix 1600M, Toa Gosei Co., Ltd.), 0.5 parts by mass of photopolymerization initiator (BASF, Darocur 1173), SrGa 2 S 4 with an average particle size of 6 ⁇ m: Eu A green phosphor sheet-forming composition was prepared by uniformly dispersing 1.5 parts by mass of (sulfurized green phosphor).
  • composition for forming red phosphor sheet (BaSr) 3 SiO 5 with 100 parts by mass of photocurable urethane methacrylate (Aronix 1600M, Toa Gosei Co., Ltd.), 0.5 parts by mass of a photopolymerization initiator (BASF, Darocur 1173) and an average particle size of 10 ⁇ m :
  • a composition for forming a red phosphor sheet was prepared by uniformly dispersing 3 parts by mass of Eu (oxide red phosphor).
  • a 38 ⁇ m thick transparent separator polyethylene terephthalate film (A4300, Toyobo Co., Ltd.)
  • the red phosphor sheet-forming composition is 20 ⁇ m in dry thickness on the transparent separator.
  • an ultraviolet ray was irradiated (7000 mJ / cm 2 ) to polymerize urethane methacrylate to form a red phosphor layer.
  • a 25 ⁇ m thick polyethylene terephthalate film (T11, Toray Industries, Inc.) was laminated to obtain a phosphor sheet having the structure of FIG.
  • Example 3 Preparation of green single-color phosphor sheet
  • (BaSr) 3 SiO 5 : Eu oxide red phosphor
  • a phosphor sheet composition was prepared in the same manner as in Example 1, and the phosphor having the structure of FIG. 1 and FIG. 3 was further prepared. A sheet was obtained. This phosphor sheet is a single green color.
  • Comparative Example 1 A composition for forming a phosphor sheet in the same manner as in Example 1, except that butyl methacrylate-glycidyl methacrylate (BMA-GMA) copolymer (DF-242, Fujikura Kasei Co., Ltd.) is used instead of urethane methacrylate. And a phosphor sheet having the structure shown in FIG. 1 and FIG. 3 was produced.
  • BMA-GMA butyl methacrylate-glycidyl methacrylate copolymer
  • Comparative Example 2 A phosphor sheet-forming composition was prepared in the same manner as in Example 1 except that methyl methacrylate-butyl acrylate (MMA-BA) copolymer (NABSTAR N800AS, Kaneka Corporation) was used instead of urethane methacrylate. Thus, a phosphor sheet having the structure of FIG. 1 and FIG. 3 was manufactured.
  • MMA-BA methyl methacrylate-butyl acrylate copolymer
  • Comparative Example 3 Similar to Example 1 except that instead of urethane methacrylate, a hydrogenated styrene-ethylene-butylene-styrene block (hydrogenated SEBS) copolymer (Septon V9827, Kuraray Co., Ltd.) is used and no ultraviolet rays are irradiated. Thus, a phosphor sheet forming composition was prepared, and a phosphor sheet having the structure of FIG. 1 and FIG. 3 was produced.
  • hydrogenated SEBS hydrogenated styrene-ethylene-butylene-styrene block copolymer
  • Comparative Example 4 Instead of urethane methacrylate, hydrogenated styrene-ethylene-butylene-styrene block (hydrogenated SEBS) copolymer (Septon V9827, Kuraray Co., Ltd.) 40 parts by weight and maleic anhydride 0.5 parts by weight were used.
  • a phosphor sheet-forming composition was prepared in the same manner as in Example 1 except that no ultraviolet rays were irradiated, and a phosphor sheet having the structure shown in FIG. 1 and FIG. 3 was produced.
  • Comparative Example 5 Similar to Example 3 except that instead of urethane methacrylate, a hydrogenated styrene-ethylene-butylene-styrene block (hydrogenated SEBS) copolymer (Septon V9827, Kuraray Co., Ltd.) is used and no ultraviolet rays are irradiated.
  • a phosphor sheet-forming composition was prepared to produce a phosphor sheet having the structure of FIG. 1 and FIG. This phosphor sheet is a single green color.
  • Comparative Example 6 Instead of urethane methacrylate, fluorescence was used in the same manner as in Example 3 except that a butyl methacrylate-glycidyl methacrylate (BMA-GMA) copolymer (DF-242, Fujikura Kasei Co., Ltd.) was used and no ultraviolet ray was irradiated.
  • BMA-GMA butyl methacrylate-glycidyl methacrylate copolymer
  • DF-242 Fujikura Kasei Co., Ltd.
  • a composition for forming a body sheet was prepared, and a phosphor sheet having the structure of FIG. 1 and FIG. 3 was produced. This phosphor sheet is a single green color.
  • the chromaticity difference was A evaluation.
  • BMA-GMA copolymer, MMA-BA copolymer, hydrogenated SEBS, or hydrogenated instead of urethane methacrylate was B or C.
  • the fluorescent substance sheet of Example 2 arranges the green fluorescent substance and red fluorescent substance which were used in Example 1 in a separate fluorescent substance layer, the chromaticity difference which the combination of fluorescent substance influences is the same. As expected, the evaluation was A.
  • the phosphor sheets of Example 3 and Comparative Examples 5 and 6 emit green monochromatic light, they are suitable as examples for measuring the emission spectrum intensity ratio.
  • the emission spectrum intensity ratio is A evaluation
  • the emission spectrum intensity ratio is B evaluation or C evaluation. It was.
  • the phosphor sheet-forming composition of the present invention is excellent in light resistance and low in light absorption for visible light compared to thermoplastic resins, etc., among many resins and polymerizable compounds as a film-forming composition.
  • a photocurable compound that can provide a resin and is available at a relatively low cost is used. Therefore, the phosphor sheet-forming composition of the present invention is excellent in light resistance, has a low light absorption property for visible light, suppresses phosphor alteration due to moisture, and is useful as a raw material for producing a low-cost phosphor sheet. is there.

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PCT/JP2012/067182 2011-07-05 2012-07-05 蛍光体シート形成用組成物 WO2013005794A1 (ja)

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JP2011148873 2011-07-05
JP2011-148873 2011-07-05
JP2011165090 2011-07-28
JP2011-165090 2011-07-28

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TWI606252B (zh) 2013-08-14 2017-11-21 納諾柯技術有限公司 使用多相樹脂的量子點薄膜及其製備方法
JP5820894B2 (ja) * 2014-02-21 2015-11-24 デクセリアルズ株式会社 封止テープ、蛍光体シート、及び蛍光体シートの製造方法
CN111812889B (zh) * 2015-07-10 2023-03-24 迪睿合株式会社 荧光体片、具备该荧光体片的白色光源装置、以及具备该白色光源装置的显示装置
TWI610467B (zh) * 2015-08-18 2018-01-01 晶元光電股份有限公司 波長轉換薄膜、其製造方法及發光裝置
TWI645584B (zh) * 2015-08-18 2018-12-21 晶元光電股份有限公司 波長轉換薄膜、其製造方法及發光裝置
WO2017111099A1 (ja) * 2015-12-22 2017-06-29 富士フイルム株式会社 波長変換フィルム
JP6595331B2 (ja) * 2015-12-24 2019-10-23 富士フイルム株式会社 波長変換部材
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