WO2005014270A2 - 近赤外線吸収フィルムおよびその製造方法、近赤外線吸収フィルムロールおよびその製造方法、並びに近赤外線吸収フィルター - Google Patents
近赤外線吸収フィルムおよびその製造方法、近赤外線吸収フィルムロールおよびその製造方法、並びに近赤外線吸収フィルター Download PDFInfo
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- WO2005014270A2 WO2005014270A2 PCT/JP2004/011788 JP2004011788W WO2005014270A2 WO 2005014270 A2 WO2005014270 A2 WO 2005014270A2 JP 2004011788 W JP2004011788 W JP 2004011788W WO 2005014270 A2 WO2005014270 A2 WO 2005014270A2
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Classifications
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/244—All polymers belonging to those covered by group B32B27/36
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- 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
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- 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
- B32B2255/28—Multiple coating on one surface
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- 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
- B32B2307/402—Coloured
- B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- 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
- B32B2307/408—Matt, dull surface
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- 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
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- 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
- B32B2307/42—Polarizing, birefringent, filtering
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- 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
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- 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
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/204—Plasma displays
Definitions
- a film capable of absorbing near-infrared rays has a property of blocking near-infrared rays and transmitting visible light, and is used for various purposes as a near-infrared absorption filter.
- plasma displays have been attracting attention as thin, large-screen displays.However, there is a problem that electronic devices using a near-infrared remote control may malfunction due to near-infrared rays emitted from the plasma displays.
- the near-infrared absorption filter described above is provided to prevent these malfunctions.
- the filter (4) has good workability and productivity, and has a relatively high degree of freedom in optical design, and various methods have been proposed.
- the base film contains particles to form projections on the surface.
- the particles include inorganic particles such as silica, kaolinite, talc, calcium carbonate, zeolite, alumina, barium sulfate, carbon black, zinc oxide, titanium oxide, etc .; acrylic resins, polyamide resins, polystyrene resins, Organic particles such as polyester resin and benzoguanamine / formalin condensate; In order to maintain the transparency of the film, it is preferable to reduce the content of the particles in the base film, for example, from lppm to 100ppm.
- the polymer type ultraviolet absorber means a polymer having a skeleton in a side chain useful as an ultraviolet absorber. Considering compatibility with polyester, polyester-based ultraviolet absorbers and acrylic polymer ultraviolet absorbers are preferred.
- polyester has terephthalic acid as a dicarboxylic acid component, ethylene glycol and / or 1,4-butanediol as a diol component, and naphthalenetetracarboxylic acid represented by the general formula (I) as a copolymer component.
- the base film adopts a laminated structure of at least three layers (three layers, four layers, five layers, etc.). It is preferable that the intermediate layer) be an ultraviolet absorbing layer.
- the filter medium used for high-precision filtration of the molten polyester is not particularly limited. However, if the filter medium is a stainless steel sintered body, agglomeration mainly composed of Si, Ti, Sb, Ge, and Cu is used. It is preferable because it has excellent performance of removing substances and high melting point organic substances. Further, the filter particle size (initial filtration efficiency: 95%) of the filter medium is preferably 20 ⁇ m or less, more preferably 15 ⁇ m or less. If the filtration particle size (initial filtration efficiency: 95%) of the filter medium exceeds 20 m, foreign substances having a size exceeding 20 which may cause the above-mentioned optical defects or cause scratches cannot be sufficiently removed.
- the obtained unstretched film is stretched by 2.5 to 5.0 times in a longitudinal direction (longitudinal direction: a running direction during the production of the laminated film) in a mouth heated to 80 to 120 ° C. Use a uniaxially oriented film. Subsequently, the edge of the film was gripped with a clip and 120 to 150. It is led to a hot-air zone heated to C and stretched 2.5 to 5.0 times in the width direction to reach 200 to 250.
- the laminated base film is obtained by heat-treating at C and relaxing it to about 3% in the width direction as necessary during this heat-treating step.
- Preventing the film from shifting on the roll surface is also an effective method for preventing scratches.
- the following methods can be adopted. For example, reducing the diameter of the roll, using a suction roll, using electrostatic adhesion, or using a part-ep adhesion device to increase the adhesion of the film to the edge of the film can reduce the occurrence of long scratches. Can be suppressed.
- reducing the diameter of the roll also contributes to the reduction in the amount of film displacement, which can contribute to the prevention of long scratches.
- the frequency of length of most of the scratches increases toward the end in the roll width direction, and it is difficult to obtain a scratch-free portion at the end in the roll width direction.
- the temperature change of the film per roll is 40 ° C or less, preferably 30 ° C or less, more preferably 20 ° C or less, and even more preferably 10 ° C or less.
- the drying conditions are set such that drying is completed in the early stage of the dryer section, and the film is cooled at the outlet, so that the film temperature at the outlet of the dryer is reduced to 40%.
- the temperature is set to not more than ° C, the displacement of the film due to the temperature change can be reduced.
- the sequential biaxial stretching method has been described above, but the stretching method may be a simultaneous biaxial stretching method. Further, a multi-stage stretching method may be used.
- the near-infrared absorbing layer according to the film of the present invention is formed from a composition containing a near-infrared absorbing dye having a maximum absorption at a wavelength of 800 to 1200 nm and a resin as main components.
- the total of the near-infrared dye and the resin is preferably at least 80% by mass, more preferably at least 85% by mass, and even more preferably at least 90% by mass.
- the near-infrared absorbing dye which can be used in the film of the present invention is not particularly limited as long as it has a maximum absorption in a near-infrared region (wavelength: 800 to 1200 nm).
- the near-infrared absorbing film of the present invention is suitable for display applications, particularly for plasma displays, and is required to have a large absorption in the near-infrared region and a high transmittance in the visible light region. From such a viewpoint, it is recommended to select a dye having a high transmittance in the visible light region. Specifically, it is preferable to use a combination of a diimmoium salt compound represented by the following general formula (III) and one or more other near-infrared absorbing dyes.
- Alkyl group methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, t-butyl group, n-amyl group, n-hexyl group, n— Octyl group, 2-hydroxyethyl group, 2-cyanoethyl group, 3-hydroxypropyl group, 3-cyanopropyl group, methoxethyl group, ethoxyxyl group, butoxyethyl group and the like.
- aryl group phenyl group, fluorophenyl group, cyclophenyl group, tolyl group, Getylaminophenyl, naphthyl and the like.
- aralkyl group benzyl group, ——fluoropentyl group, p-chlorophenyl group, phenyl pill group, naphthylethyl group and the like.
- diimmonium salt compound represented by the general formula (III) a commercially available product can be used.
- Ka yasorb I RG_022, I RG—023, I RG—024 (all made by Nippon Kayaku), CIR—1080, CIR—1081, CIR—1083, CI R-1085 (all made by Nippon Carritnet) And the like are preferred.
- the above-mentioned dimonium salt-based compound is characterized in that it has a large absorption in the near infrared region, a wide wavelength range that can be absorbed, and a high transmittance in the visible light region.
- diimmonium salt compounds are easily denatured under high temperature and high humidity, and absorbance in the near-infrared region is reduced, transmittance in a part of the visible light region is reduced, and the color tone is easily changed. It also has such a property.
- the adhesion modification layer described later from a coating solution containing an adhesion modification resin having an acid value of 200 eq / t or more, the film can be exposed to high temperature and high humidity for a long time. Even when left undisturbed, denaturation of the dimonium salt-based compound can be suppressed.
- near-infrared absorbing dyes that can be used in combination with the above-mentioned dimmoium salt compounds include phthalocyanine compounds, dithiol metal complex 'compounds, cyanine compounds, Cyanine compounds, squarium salt compounds, pyrium salt compounds, thioperillium compounds, croconium compounds, indoor dilinyl chelate dyes, indnaphthol chelate dyes, azo dyes, azo chelate dyes, amidium Salt dyes, quinone dyes, anthraquinone dyes, polymethine dyes, triphenylmethane dyes, and the like can be mentioned.
- phthalocyanine-based compound a commercially available product can be used. Specifically, Ex color I R_1, IR—2, IR—3, IR—4, IR—10, IR-1A, IR—12, IR—14, TXEX—805K, TXEX—809K :, T XEX— 810K, TXEX-811 K, TXEX- 812K, TXEX-813 ⁇ TXEX- 814 ⁇ (all manufactured by Nippon Shokubai Co., Ltd.), MI R- 369, MI R- 389 (hereinafter manufactured by Mitsui Chemicals) As
- dithiomonometal complex compound for example, a compound represented by the following general formula (IV) is preferable.
- R 13 to R 16 may be the same or different, and each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an aryl group, an aralkyl group, or an amino group.
- M is nickel, copper, , Cobalt, palladium and platinum.
- dithiol metal complex compound represented by the general formula (IV) for example, commercially available products such as Mitsui Chemicals: SIR-128, SIR-130, SIR-132, and SIR-159 can also be suitably used.
- a near-infrared absorbing layer contains a color correcting dye that absorbs neon light emitted from the plasma display. Is also possible.
- the wavelength 550 is set so that the transmittance of light in the wavelength range of 550 nm to 600 nm is 10 to 60% and the transmittance of light in the wavelength range of 820 nm to 1100 nm is 20% or less. It is preferable that the near-infrared absorbing layer contains a specific amount of a color correction dye having a maximum absorption in the range of from 620 nm to 620 nm.
- color capturing dyes include cyanine-based, polymethine-based, squarylium salt-based, phthalocyanine-based, naphthalocyanine-based, quinone-based, azaporphyrin-based, azo-based, azochelate-based, azurenium-based, pyrylium-based, crocomium-based, Examples include compounds consisting of indoline phosphorus chelates, indnaphthol chelates, azo chelates, dithiol metal complexes, pyromethenes, azomethines, xanthenes, and oxonols.
- the near-infrared absorbing layer preferably has a form in which the above-described near-infrared absorbing dye is dispersed in a resin.
- the content of the diimmonium salt-based compound with respect to the resin is preferably 7% by mass or less, more preferably 5% by mass or less, and further preferably 4% by mass or less.
- the lower limit of the content of the diimmonium salt compound to the resin is preferably 0.5% by mass, more preferably 1% by mass, and still more preferably 1.5% by mass. %.
- a coating liquid in which the near-infrared absorbing dye and the resin are dissolved or dispersed in a solvent is prepared, and this is prepared. It is preferable to adopt a method of coating and drying directly on the base film or via another layer.
- the near infrared absorbing layer is formed using the above coating solution
- a resin having a Tg of more than 250 ° C. when used, when the near infrared absorbing layer is formed by coating and drying, The solvent evaporation effect is poor and the amount of solvent remaining in the layer tends to increase. As a result, the heat resistance and moisture resistance of the near-infrared absorbing layer may decrease.
- the heat resistance and the moisture resistance of the near-infrared absorbing layer can be sufficiently exhibited without adding a surfactant, but the dispersibility of the near-infrared absorbing dye in the resin can be improved by adding the surfactant.
- the appearance of the coating film of the near-infrared absorbing layer is improved, and in particular, dents due to sticking of foreign matters and foreign matter due to minute bubbles and cissing in the drying step are improved.
- the surfactant is precipitated and localized on the surface by heating during drying of the coating, so that the addition of a surfactant with a low HLB not only improves the durability but also improves the near-infrared absorption layer. Slipperiness is imparted to the surface. For this reason, the handleability is improved without forming surface irregularities on the near-infrared absorbing layer or on the opposite surface, and it is advantageous in that it can be easily wound into a roll.
- surfactant known cationic, anionic, and nonionic surfactants can be preferably used, and nonionic surfactants having no polar group are preferable due to problems such as deterioration of near-infrared absorbing dyes.
- a silicone-based or fluorine-based surfactant having excellent surface activity is preferable.
- the HLB is low, the surface becomes water-repellent and the deterioration of the dye due to moisture and heat resistance can be suppressed, and it is easy to impart lubricity. If the HLB is too low, the leveling property is insufficient due to lack of surface activity. Run out.
- the near-infrared absorbing dye, resin and surfactant in an organic solvent methods such as stirring, dispersion, and pulverization under heating can be adopted. By heating at the time of dissolution, the solubility of the dye and the resin can be increased, and the appearance deterioration due to undissolved substances can be prevented.
- dispersing or disintegrating resins and dyes in organic solvents for example, dispersing them in a coating liquid in the form of fine particles with an average particle diameter of 0.3 ⁇ m or less, the near-infrared light with excellent transparency It becomes possible to form an absorption layer.
- a well-known disperser or crusher can be used.
- the residual solvent concentration is in a range of approximately more than 5% by mass to 7% by mass or less. That is, when the amount of the residual solvent in the near-infrared absorbing layer is more than 5% by mass and 7% by mass or less, the near-infrared absorbing layer is apparently dry and does not cause blocking.
- the intermediate layer may contain various types of particles for the purpose of forming a convex on the surface and improving the slip property.
- the particles to be contained in the intermediate layer include inorganic particles such as silica, kaolinite, talc, calcium carbonate, zeolite, and alumina, acrylic, PMMA, nylon, styrene, polyester, benzoguanamine-formalin condensate, and the like.
- Organic particles Note that it is preferable to select particles having a refractive index close to that of the resin used from the viewpoint of transparency.
- a surfactant an antistatic agent, a fluorescent dye, a fluorescent brightener, a pigment, an ultraviolet absorber, and the like may be contained.
- the intermediate layer may be a single layer or, if necessary, a laminate of two or more layers.
- the crosslinking density of the first adhesion modification layer can be increased (described later). Mixing of the components of the first adhesiveness-modifying layer and the components of the near-infrared absorbing layer can be suppressed only near the interface between these layers. As a result, the stability of the near-infrared absorbing dye is improved. If the first adhesion modifying layer component and the near-infrared absorbing layer component are mixed more than necessary, the first adhesive modifying layer component modifies the near-infrared absorbing dye, so that the stability of the near-infrared absorbing dye is reduced. descend.
- the first adhesiveness-modifying layer according to the present invention can suppress the above-mentioned phenomenon, and thus can improve the stability of the near-infrared absorbing dye.
- the near-infrared absorption layer has a near-infrared absorption layer.
- the stability of the infrared-absorbing dye decreases, and the spectral characteristics and color tone of the film change.
- the first adhesion-modifying layer serves as an adhesive layer between the base film and the near-infrared absorbing layer, and the first adhesion-modifying resin has an acid value of 200. If it is less than et, the adhesiveness between the base film and the near-infrared absorbing layer will be insufficient.
- the above-mentioned polyester-based graft copolymer refers to a graft copolymer molecule obtained by grafting the above-mentioned acid anhydride to a polyester-based resin from an aspect in which the above-mentioned acid anhydride is graft-copolymerized to all polyester-based resin molecules. And a mixture with unreacted polyester resin molecules to which the acid anhydride has not been grafted.
- dalicol component examples include aliphatic glycols having 2 to 10 carbon atoms, alicyclic dalicols having 6 to 12 carbon atoms, and dalicol containing an ether bond.
- Aliphatic glycols having 2 to 10 carbon atoms include ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentene. Examples thereof include tandiol, neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediole, 1,9-nonandionone, 2-ethynolee, and 2-ptinolepropanediol.
- 1,4-six-hexanedimethanol and the like can be used as the alicyclic glycol having 6 to 12 carbon atoms.
- the first adhesion-modifying layer is preferably formed on the base film by a coating method using a coating solution containing the first adhesion-modifying resin.
- the coating liquid used to form the first adhesion-modified layer contains the above-mentioned first adhesion-modified resin, and further contains water or a mixture of water and an aqueous solvent as a component. Things are preferred.
- the first adhesion modifying resin exists as a dissolving force or as a dispersion (so-called emulsion).
- the coating liquid is applied to the substrate film and the drying property is improved when dried.
- ⁇ in the property modification layer is improved.
- the content of the organic solvent including alcohols exceeds the above range, the evaporation rate of the solvent becomes too fast, and the concentration of the composition changes during application of the coating solution, and the As a result of the increase in viscosity, the coatability tends to decrease. Therefore, the appearance defect of the first adhesion reforming layer is likely to occur. Furthermore, it is not preferable from the viewpoint of the environment, the health of workers, and the risk of fire.
- the coating liquid contains the following acid compound.
- the acid anhydride group is converted into a carboxyl group by hydrolysis in the coating solution, but the action of the acid compound causes the application of the coating solution.
- the acidification of carboxyl groups and the ester group formation reaction between the first adhesion modifying resin molecules are promoted to increase the crosslink density of the first adhesion modification layer. It becomes possible. This makes it possible to achieve a high degree of adhesion to the substrate film and suppression of modification of the near-infrared absorbing dye.
- the stretched film is usually subjected to a relaxation treatment of about 2 to 10%.
- the first adhesive property modification layer is in a state where the distortion is small, that is, the length of the film in the width direction is small.
- the first adhesion reforming layer is heated with, for example, an infrared heater while the first layer is fixed.
- the heating at this time is desirably performed at a temperature of about 250 to 260 ° C. for a short time of about 0.5 to 1 second.
- the crosslinking of the first adhesion-modifying resin in the first adhesion-modifying layer is further promoted, and the first adhesion-modifying layer is further strengthened.
- the adhesion between the adhesion modification layer of (1) and the substrate film is further improved.
- the anti-reflection layer is laminated from the outermost surface in the order of low refractive index layer, high refractive index layer, hard coat layer
- a hardened layer is preferably obtained by curing a specific curable resin, the difference in the refractive index from the base film (polyester film) is large.
- the near-infrared absorbing film provided with such an anti-reflection layer causes an iris-like color (interference fringes) due to light interference at the layer interface of the filter ⁇ . Is expressed.
- a single-stage or multi-stage isocyanate polyaddition method using the above-described chain extender is carried out at a temperature of 150 ° C or less, preferably 70 ° C to 120 ° C. React at temperature for 5 minutes to several hours.
- the ratio of the isocyanate group to the active hydrogen atom can be freely selected as long as it is 1 or more, but it is necessary that free isocyanate groups remain in the obtained urethane prepolymer.
- the content of the free isocyanate group may be 10% by mass or less, but is preferably 7% by mass or less in consideration of the stability of the aqueous urethane polymer solution after blocking.
- the L value is a measure of lightness. A larger value means less darkening and higher lightness.
- the a value is a measure of reddishness. The larger the value, the more reddish, and the larger the value on the negative side, the more greenish.
- the b value is a measure of yellowish tint. The larger the value, the stronger yellowish, and the larger the value on the negative side, the stronger blue.
- the L value, a value, and b value are obtained, and the color difference ⁇ (MD) at each measurement point is calculated by the above equation (3).
- the maximum value of the color difference E (MD) at each measurement point obtained in this way must be 2.0 or less.
- the L value is preferably 80 or more, more preferably 85 or more.
- the color tone of the film and / or the light transmittance of a specific wavelength is measured online, and the coating conditions and the Z or drying conditions of the coating solution are adjusted according to the measurement results, thereby obtaining the longitudinal length of the film. It is possible to obtain a film in which the color tone variation is suppressed in the directions, that is, a film in which the maximum value of the color difference ⁇ ⁇ (MD) obtained by the above-mentioned measurement method (A) is controlled to be equal to or less than the above upper limit value. .
- a coating method by a gravure coating method is preferable, and in particular, a liquid supply pan by a reverse rotating gravure nozzle is used. It is preferable to use a “repurse gravure coating method” in which the coating liquid is scraped off from the substrate and the excess coating liquid is scraped off with a doctor blade.
- a gravure coating method in particular, a reverse gravure coating method, more uniform coating can be achieved.
- a kiss coat method is suitable for applying the film uniformly in the width direction as described later.
- Figure 1 shows an apparatus that uses the reverse gravure coat method (reverse gravure kiss coat apparatus).
- the near-infrared absorbing layer is essentially a continuous layer. Therefore, even with the gravure coating method, the near-infrared absorbing layer is a continuous layer.
- doctor blades with a nickel plating on the surface of Swedish steel are inferior to ceramic doctor blades, but they wear. It is difficult and suitable.
- the factors for controlling the coating amount include the number of rotations of the gravure roll with respect to the running speed of the film, the angle at which the doctor blade is brought into contact, and the pressing pressure of the doctor blade. In order to increase the coating amount, it is preferable to increase the rotation speed of the gravure roll.
- Controlling the speed ratio G / F of the rotation speed G (m / min) of the gravure roll to the running speed F (mZ) of the film to 0.8 to 1.5 or less is required for transfer of gravure eyes and coating defects. It is preferable from the viewpoint of the stability of the coating amount with time.
- the lower limit of the speed ratio G / F is more preferably 0.9.
- the upper limit of the speed ratio GZF is preferably 1.2, and more preferably 1.1. If the speed ratio G / F is too small, the amount of transfer is reduced, and the gravure is likely to remain without leveling.
- the transparent substrate moves toward the center of the roll (the roll before and after the coating portion), and a tin-like wave is generated parallel to the running direction (longitudinal direction), and Since the uniformity of contact between the kiss roll (coating roll) and the transparent substrate in the width direction is impaired, the color tone fluctuation in the film width direction can be rather increased.
- the reverse gravure coating method is preferable as the method for applying the coating liquid to the transparent base film, and the kiss coating method is preferable from the viewpoint of suppressing color tone fluctuation in the film width direction. It is. Therefore, as a coating method, a reverse gravure and kiss coat method using the reverse gravure and kiss coat apparatus shown in FIG. 1 is most preferable.
- the amount of residual solvent in the near-infrared absorbing layer increases, and the temporal stability of the dye deteriorates, especially when stored under high temperature and high humidity for a long period of time (for example, 60 ° C, 95% relative humidity, 5% (00 hours), the change in the transmittance and color tone of the film tends to increase.
- a long period of time for example, 60 ° C, 95% relative humidity, 5% (00 hours)
- the change in the transmittance and color tone of the film tends to increase.
- heat-sensitive pigments such as diimmonium salt compounds
- the drying speed will be slow and drying will take a long time, resulting in reduced productivity.
- a more preferred wind speed is 2 m / sec or more.
- the drying step with the highest drying temperature reduces the amount of residual solvent in the near-infrared absorbing layer to 5.0% by mass or less, preferably 3.0% by mass.
- Hot air temperature 80 ⁇ 180 (6)
- the hot air temperature in the drying step having the highest drying temperature is preferably higher than the hot air temperature in the first drying step, and is preferably in the range of 80 ° C to 180 ° C.
- the lower limit is more preferably 100, and more preferably 120 ° C.
- the upper limit is more preferably 170 ° C. It is particularly preferable that the hot air temperature is equal to or higher than the glass transition temperature of the resin constituting the near-infrared absorbing layer. If the temperature of the wind is too low, the amount of residual solvent in the near-infrared absorbing layer is difficult to decrease.
- the cooling step is the final step of the drying step.
- the temperature of the wind is more preferably T g -15 ° C or less, and still more preferably T g -10 ° C or less. If the film leaves the drying oven at a high temperature, the surface of the near-infrared absorbing layer becomes poor in slipperiness when coming into contact with the film running roll before winding, and the surface of the layer is damaged. In addition to this, the film may be easily curled and the film may be curled.
- the wind speed is preferably, for example, 2 to 5 OmZ seconds
- the cooling time is, for example, preferably 5 to 120 seconds.
- the drying temperature is controlled within a range of, for example, soil 2 ° C with respect to the set temperature, so that the temperature control is performed accurately, and after the actual temperature in the drying furnace reaches the set temperature, for example. For example, it is preferable to leave the film for 30 minutes or more to stabilize the drying temperature before producing the film.
- a high-precision heater or blower may be used, and with respect to the drying time, a high-precision driving device may be used.
- the near-infrared absorbing film roll of the present invention is obtained by winding the near-infrared absorbing film obtained by the above-mentioned production method around a winding core (a core such as a paper tube or a metal tube) and forming a roll.
- a winding core a core such as a paper tube or a metal tube
- the film may be appropriately laminated on the film by a method suitable for forming each layer.
- a conductive layer can be provided as an electromagnetic wave shielding layer for the purpose of removing harmful electromagnetic waves emitted from a display or the like.
- the conductive layer include a metal mesh and a transparent conductive thin film.
- the transparent conductive thin film When the above-mentioned transparent conductive thin film is applied to the film of the present invention by increasing the conductivity, it is preferable to have a laminated structure of three or more layers such as metal oxide Z metal / metal oxide. By including metal in the constituent elements, excellent conductivity can be secured while maintaining high visible light transmittance.
- the metal to be laminated gold, silver, and compounds containing these are suitable from the viewpoint of improving conductivity.
- the total thickness of the transparent conductive thin film is preferably within the above-described range of the preferable thickness of the transparent conductive thin film.
- the thickness of the laminated metal is preferably not less than 5 OA, not more than 20 OA, more preferably not more than 100 OA. When the thickness of the metal is less than the above range, the effect of laminating the metal is not sufficiently ensured. On the other hand, when the thickness exceeds the above range, the visible light transmittance of the film is reduced.
- the near-infrared absorbing film of the present invention when installed as a near-infrared absorbing filter on the front of a plasma display, absorbs unnecessary near-infrared rays emitted from the display. Therefore, when the remote control for operating the plasma display is of the near-infrared type, malfunction of the remote control due to near-infrared rays emitted from the display can be prevented.
- the light transmittance in the near-infrared region is the average value of the light transmittance at a wavelength of 900 to 110 O-nm
- the transmittance in the neon light (neon storage light) region is the light transmittance at a wavelength of 570 to 600 nm.
- the average value and the transmittance in the visible light range are evaluated by the average value of the transmittance at wavelengths of 450 to 700 nm, and the ultraviolet transmittance is evaluated by the light transmittance at 380 nm.
- the number of microdefects having a size of 300 ⁇ or more per 10 Om 2 was measured and ranked according to the following criteria.
- the gap is less than lmm
- the winding gap is 1 mm or more and less than 2 mm
- the winding gap is 4mm or more, or winding is impossible
- Adhesion (%) (1 number of squares peeled off Z number of squares evaluated) X I 00
- a polyethylene terephthalate resin with an intrinsic viscosity of 0.62 d 1 / g is put into a twin screw extruder, melt-extruded from a T-die at 290 ° C, and an electrostatic charge is applied on a cooling rotary metal port. To give an unstretched sheet.
- the unstretched sheet is heated to 90 ° C. by a roll stretching machine and stretched longitudinally at 3.5 times, and then, on a longitudinally stretched film, a coating solution A for an intermediate layer having a composition shown in Table 1 below is applied.
- a coating solution A for an intermediate layer having a composition shown in Table 1 below is applied.
- the film was heated to 140 ° C with a tenter and stretched 3.7 times, and then heat-treated at 235 ° C while relaxing 5% in the width (lateral) direction to obtain a film.
- the obtained biaxially oriented polyethylene terephthalate film having an intermediate layer had a thickness of 100 m, a total light transmittance of 90.2%, and a haze of 0.5%.
- a near-infrared absorbing film was obtained in the same manner as in Experiment 1-1, except that the coating liquid for forming the near-infrared absorbing layer contained a surfactant in an amount of 0.02% by mass relative to the resin. Surface activity Since the content of the agent was reduced, the leveling property was slightly inferior and a small amount of minor defects occurred.
- the drying conditions were as follows: 100 ° C for 5 seconds with hot air for 5 seconds, 20 ° C for 150 seconds with 20 hours of hot air, and A near-infrared absorbing finolem was prepared in the same manner as in Experiment 11 except that the heating time was 90 seconds at 90 m / s for 90 seconds. Strict initial drying conditions resulted in a slight increase in minor defects.
- a near-infrared absorbing film was prepared in the same manner as in Experiment 1-1 except that coating was performed with a wire par. Thin lines and vertical stripes were generated by the wire par.
- a near-infrared absorbing film was prepared in the same manner as in Experiment 11 except that the coating was performed by a reverse method using oblique gravure having a diameter of 30 O mm. A ridge-like streak occurred in the vertical direction.
- a near-infrared ray absorbing film was prepared in the same manner as in Experiment 1-1, except that the near-infrared ray absorbing layer was provided by the following method.
- a near-infrared absorbing film was obtained in the same manner as in Experiment 1-1, except that no surfactant was added to the coating solution for forming a near-infrared absorbing layer. Since no surfactant was added, many small defects were generated. In addition, slippage was poor, and it was difficult to take up a roll.
- a near-infrared absorbing film was obtained in the same manner as in Experiment 2-1 except that a surfactant was contained in the coating liquid for forming a near-infrared absorbing layer in an amount of 0.02% by mass relative to the resin.
- Table 7 shows the evaluation results of the obtained near-infrared absorbing film. Since the surfactant content was reduced, the leveling property was slightly inferior, and a small amount of minor defects occurred.
- a near-infrared absorbing film was obtained in the same manner as in Experiment 2-1 except that the amount of the surfactant in the coating liquid for the near-infrared absorbing layer was 2.5% by mass based on the solid content.
- Table 7 shows the evaluation results of the obtained near-infrared ray absorbing film. The stability with time was poor due to the high content of the surfactant in the near infrared absorbing layer.
- a near-infrared absorbing film was prepared in the same manner as in Experiment 2-1 except that the near-infrared absorbing layer was provided by the following method.
- the resin melt-extruded into a sheet is solidified by cooling while tightly adhering to a casting drum (mouth diameter: 400 mm Ra: 0.1 ⁇ m or less) with a surface temperature of 30 ° C using an electrostatic application casting method. Then, an unstretched film was obtained. The discharge rate at this time was 48 kgZhr, and the obtained unstretched film had a width of 300 mm and a thickness of 1400 / zm. ⁇ Heated to 100 ° C using an infrared heater, and then stretched 3.5 times in the longitudinal direction (running direction) with a group of rolls having a difference in peripheral speed (vertical stretching step) to obtain a uniaxially oriented film.
- the surface roughness of the roll was controlled to 0.1 m or less in terms of Ra, and roll cleaners were installed on the roll located at the preheating inlet of the stretching process and the cooling roll.
- the roll diameter in the longitudinal stretching step was 150 mm, and a method was used in which the film was brought into close contact with the roll using a suction roll, electrostatic adhesion, and a part-nip adhesion device.
- a parallax composed of C 3 F 7 — (OC 3 F 6 ) 34- O— (CF 2 ) 2 — C 2 H 4 — 0-CH 2 S i (OCH 3 ) 3 full O b polyether group-containing silane coupling agent, by coating a coating solution diluted to 0.5 mass 0/0 in hexane Pafuruo port, 12 0 ° and dried 1 minute in C, and the film thickness is 8 nm An antifouling layer was formed.
- an antireflection layer in which a hard coat layer, a high refractive index layer, a low refractive index layer, and an antifouling layer were laminated in this order on the surface of the second adhesion modifying layer of the base film was formed.
- the coating solution N2-1 (Table 5) for forming the near-infrared absorbing layer used in Experiment 2-1 above was used for the second adhesion on the side opposite to the antireflection layer of the base film having the antireflection layer formed thereon. It was applied to the surface of the property modifying layer so that the application amount after drying was 8.5 g / m 2 .
- the coating was performed by rotating a gravure roll having a diameter of 60 cm in reverse rotation.
- first drying step 5msec wind for 20 seconds
- second drying step 150 ° C, 20m / sec wind for 20 seconds
- 90 ° C, 20m / sec After passing through for 10 seconds (cooling step) in the air, drying was performed to produce a near-infrared absorbing filter.
- (A) means an antireflection layer
- (B) means a base film
- (C) means a near-infrared absorbing layer.
- the anti-reflection properties of the anti-reflection layer of the near-infrared absorbing filter were also evaluated.
- the antifouling property was evaluated based on the wiping property of the oil-based pen and the wiping property of the fingerprint.
- the oil-based pen can be wiped off by drawing a line on the surface of the anti-reflective layer with an oil-based pen. M-3) was wiped off, and the ease of removal was visually determined. Both were completely wiped off.
- the total thickness of the near-infrared absorbing filter (anti-reflection layer / substrate film Z near-infrared absorbing layer Z adhesive layer) obtained in Experiment 3-11 was 0.14 mm. In addition to the above properties, it has excellent properties as described above, so the separator of the composite is peeled off, and after peeling off the film, the adhesiveness of the adhesive layer is used to, for example, adhere to a plasma display or the like. It can be easily attached to the body. As described above, the thickness of the near-infrared absorbing filter is thinner than that of a conventionally known filter, so that the near-infrared absorbing filter has excellent workability of sticking.
- Experiment 3-1 except that the UV absorber was changed to a polymer UV absorber (NoVape XU—110) manufactured by Mitsubishi Chemical Corporation, and the blending amount was changed to 20 parts by mass. — 1 and Similarly, a near-infrared absorbing filter having an anti-reflection layer, a base film and a near-infrared absorbing layer was produced. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 3-1-1. Table 8 shows the evaluation results of these near infrared absorption filters. As shown in Table 8, it has the same characteristics as the near-infrared absorption filter obtained in Experiment 3-1. In addition, the same antifouling property evaluation was performed as in Experiment 3-1-1, but both the oil-based pen wiping property and fingerprint wiping property were good.
- Experiments 3-1-1 and 1-1 were carried out except that the surfactant used in the coating solution for forming the near-infrared absorbing layer was changed to a silicone-based surfactant with an HLB of 11 (manufactured by Nippon Tunicer, FZ-210). Similarly, a near-infrared absorbing filter having an anti-reflection layer and a base film and a near-infrared absorbing layer was produced. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 3-1-1. Table 8 shows the evaluation results of these near infrared absorption filters.
- Experiments 3-1-1 and 1-1 were performed except that the surfactant used in the coating liquid for forming the near-infrared absorbing layer was changed to a silicone-based surfactant with an HLB of 3 (Nippon Fuka, FZ-213). Similarly, a near-infrared absorbing filter having an anti-reflection layer, a base film and a near-infrared absorbing layer was produced. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 3-1-1. Table 8 shows the evaluation results of these near infrared absorption filters.
- Experiment 3 Sece a surfactant with a lower HLB (higher hydrophobicity) than the near-infrared absorption filter obtained in 1-1 was used, the leveling property when forming the near-infrared absorption layer was slightly inferior, and a slight defect was observed. Slightly increased.
- the same antifouling property evaluation as in Experiment 3-1-1 was performed, but both the oil-based pen wiping property and the fingerprint wiping property were good.
- the near-infrared absorbing filter obtained in this experiment 3-1-5 has a high ultraviolet transmittance, so that the near-infrared absorbing dye is largely deteriorated by light and has poor light fastness. Further, since the second adhesion modifying layer is not formed, the adhesion of the anti-reflection layer and the near infrared absorbing layer to the base film is poor. Furthermore, since the incorporation of a surfactant into the coating liquid for forming the near-infrared absorbing layer was discontinued, the dispersibility of the near-infrared absorbing dye and the color adjusting dye for neon light power in the resin was poor. The coating appearance of the absorbing layer was poor.
- Table 8 shows the characteristics of the near-infrared absorption filter obtained in Experiment 3-1-6. Since the near-infrared absorption filter obtained in Experiment 3-1-6 did not have an anti-reflection layer, the surface reflectance and surface hardness were evaluated based on the characteristics of the surface of the base film. .
- Experiment 3-1-11 The filter of Experiment 3-1-7 was obtained in the same manner as in Experiment 3-1-1, except that the lamination of the near-infrared absorbing layer was stopped. In this experiment 3-1-17, the lamination of the near-infrared absorbing layer was stopped, so that the adhesive layer was formed on the surface of the base film. Table 8 shows the characteristics of the filter obtained in this experiment 3-1-7. Real truth The filter obtained in Experiment 3-1-17 does not have a near-infrared absorbing layer, so it has a high transmittance in the near-infrared region and does not have a basic function as a near-infrared absorbing filter. Also, the color tone correction function is not provided.
- a near-infrared absorption filter was obtained in the same manner as in Experiment 3-1-1, except that the following (7) to (10) were changed in the method of Experiment 3-1-1.
- the coating quality of the near-infrared absorbing layer was inferior.
- due to poor light resistance, long-term use has increased interference with infrared remote control devices installed in the surrounding area.
- the near-infrared absorbing filter obtained in Experiment 3-1-6 had high surface reflectivity, so it had high external light reflection and reflected fluorescent light used for indoor lighting, resulting in low visibility of the screen.
- the surface hardness was low and the antifouling property was not imparted, it was easily scratched, and the wiping ability of fingerprints attached when eroded by hand was poor.
- the appearance of the coating film of the near-infrared absorbing layer was poor, the quality of the image deteriorated due to the defect.
- the near-infrared absorbing filter obtained in Experiment 3-1, 1-1, Experiment 3-1-2, Experiment 3-1, 3, and Experiment 3-1, 4 has a small thickness and a composite adhesive layer. I have. Therefore, if the filter is attached while the plasma display panel surface is moistened with isopropanol, it can be attached neatly while suppressing the inclusion of air bubbles, and has extremely good workability. Was.
- the light quantity at that part is converted into an electric signal by a CCD image sensor camera placed 50 mm above the XY table,
- the air signal was amplified, differentiated, compared with a threshold level by a comparator, and an optical defect detection signal was output.
- using a CCD image sensor camera input the image of the flaw, analyze the video signal of the input image by a predetermined procedure, measure the size of the optical defect, and determine the position of the defect of 50 m or more. Is displayed. Detection of optical defects by this method was performed on both sides of the test piece.
- defects due to scratches are selected.
- the portion determined to be flawed by the above method was cut into an appropriate size, and a test specimen for shape observation was collected.
- a three-dimensional shape measuring apparatus manufactured by Micromap, TYPE550
- the specimen was observed from the direction perpendicular to the surface where the defect of the specimen was detected, and the size of the flaw was measured.
- the unevenness of the scratches approaching within 50 ⁇ was the same.
- the length and width of the rectangle with the smallest area covering the outermost of these flaws was defined as the flaw length and width.
- the depth (difference between the height of the highest point and the lowest point) and the length of these scratches were measured. From the results, the number of flaws having a depth of 1 ⁇ or more and a length of 3 mm or more (pieces / m 2 ) was determined, and judged according to the following criteria.
- a par. Composed of C 3 F 7 — (OC 3 F 6 ) 34 — O— (CF 2 ) 2 — C 2 H 4 — 0-CH 2 S i (OCH 3 ) 3 full O b polyether group-containing silane coupling agent, by coating a coating solution diluted to 0.5 mass 0/0 in hexane Pafuruo port, 12 0 ° and dried 1 minute in C, and the film thickness is 8 nm An antifouling layer was formed.
- Experiment 4-1 was carried out except that the surfactant used in the coating solution for forming the near-infrared absorbing layer was changed to a silicone-based surfactant having an HLB of 3 (Nippon Tunicer, FZ-213).
- Near-infrared absorbing film having an anti-reflection layer, a base film and a near-infrared absorbing layer A filter was prepared. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 4-1-1. Table 9 shows the evaluation results of these near infrared absorption filters.
- the second adhesion improving layer is not formed on both sides of the base film, and no surfactant is added to the coating solution for forming the near infrared absorbing layer.
- a near-infrared absorption filter having an anti-reflection layer, a base film and a near-infrared absorption layer was produced in the same manner as in Experiment 4-1-1. Further, using this near-infrared absorption filter 1, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 4-1-11. Table 10 shows the evaluation results of these near-infrared absorbing filters.
- these near-infrared absorbing filters have high ultraviolet transmittance, so that the near-infrared absorbing dye is largely deteriorated by ultraviolet rays and has poor light fastness.
- the absence of the second adhesion modifying layer improved the adhesion between the antireflection layer and the base film, and between the base film and the near-infrared absorbing layer.
- near infrared absorption filter since no surfactant was added to the coating liquid for forming the near-infrared absorbing layer, the dispersibility of the near-infrared absorbing dye and the color adjusting dye for neon cut in the resin was poor, and the appearance of the near-infrared absorbing layer was poor. However, it is worse than the near-infrared absorption filter of Experiment 4-1-1.
- the surface of the near-infrared absorbing layer had poor slipperiness, and it was difficult to wind it up in a roll.
- a near-infrared absorbing filter having a base film and a near-infrared absorbing layer was produced in the same manner as in Experiment 4-1-1 except that the antireflection layer was not formed. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 4-1-1. Table 10 shows the evaluation results of these near-infrared absorption filters. As shown in Table 10, these near-infrared absorbing filters do not have an anti-reflection layer and thus have poor surface reflectance and surface hardness. In addition, the same waterproofness evaluation as in Experiment 4-11 was performed, but lines and fingerprints drawn with an oil-based pen remained even after wiping.
- the dispersibility of the near-infrared absorbing dye and the color adjusting dye for neon cut in the resin was poor.
- the appearance is worse than that of the near-infrared absorbing filter in Experiment 4-1.
- the surface of the near-infrared absorbing layer had poor slipperiness, and it was difficult to wind it up in a roll.
- the transmittance of the near-infrared absorbing filter [without adhesive layer] in the ultraviolet region is 95%, but in the embodiment having the adhesive layer, the transmittance in the ultraviolet region is 0%. %Met.
- a second adhesion-modifying layer The antireflection layer, the base film and the base film were formed in the same manner as in Experiment 4-11 except that no A near-infrared absorbing filter having a near-infrared absorbing layer was produced. Further, using this near-infrared ray absorption filter, a near-infrared ray absorption filter having an adhesive layer was produced in the same manner as in Experiment 4-1-1. Table 10 shows the evaluation results of these near-infrared absorbing filters.
- Experiment 4-1-1-1 except that the surfactant used in the coating liquid for forming the near-infrared absorbing layer was changed to a silicone-based surfactant with an HLB of 1 (FZ-2.1.10, manufactured by Nippon Tunicer).
- a near-infrared absorbing filter having an anti-reflection layer, a base film and a near-infrared absorbing layer was produced in the same manner as in the above. Further, using this near-infrared absorption filter, a near-infrared absorption filter having an adhesive layer was produced in the same manner as in Experiment 4-1-1. Table 10 shows the evaluation results of these near-infrared ray absorption filters.
- near-infrared absorbing filters use surfactants with very low HLB (high hydrophobicity), so they have poor leveling properties when forming a near-infrared absorbing layer and increase many small defects. The appearance of the layers has deteriorated. In addition, the slippage of the surface of the near-infrared absorbing layer was too good, and the winding slipped when rolled into a roll.
- HLB high hydrophobicity
- the near-infrared absorbing filters from Experiment 4-1 to Experiment 1 to Experiment 4-1-5 are thin and have a composite adhesive layer. Therefore, the surface of the plasma display panel is moistened with isopropanol. However, when the filter was attached, it was possible to suppress the inclusion of air bubbles and to attach the filter neatly, and it had extremely good workability.
- a plasma display panel manufactured by FUJITSU with the near-infrared absorbing layer surface without the adhesive layer on the near-infrared absorbing filter [with no adhesive layer] obtained from Experiment 4-1-1 to Experiment 4-1-5 , And PDS 4221 JH) were attached to the front panel using an optical adhesive, and various functions were evaluated. The same results as in Experiments 4-2 were obtained.
- a conductive mesh [electromagnetic wave shielding layer] was adhered to the near-infrared absorbing filter [provided with the adhesive layer] obtained in Experiments 4-1-1 to 4-1-5 via the adhesive layer.
- the above conductive mesh was made by knitting 0.03 mm fibers in a length and width weave at a density of 13.5 fibers per 2.54 cm, and electroless plating with nickel and copper. It is. '
- the front panel of the plasma display panel (Fujitsu, PDS4211J-H) was removed, and each near-infrared absorbing filter with a conductive mesh was attached using an adhesive to evaluate various functions. It was confirmed that in addition to the effects confirmed in Experiment 4-2 above, an electromagnetic wave blocking effect can also be exhibited.
- the color difference ⁇ (MD) was 2 or less, and it was confirmed that the film corresponded to the constant region over the entire length of the film.
- one end is defined as a first end, the other end is defined as a second end, and both ends are measured and Between the two end portions, three measurement points are provided at regular intervals, and the L value, a value, and b value measured at each measurement point according to the color tone measurement method are used to determine the color difference ⁇ defined by the following equation (13). Was calculated for each measurement point, and the largest value among these was defined as the maximum value of the color difference E in the film width direction.
- ⁇ (TD) [(L a -Lj 2 + (a a- a m ) 2 + (b a -b m ) 2 ] 1/2
- a polyethylene terephthalate resin having an intrinsic viscosity of 0.62 dl / g and containing no particles is charged into a twin-screw extruder, melt-extruded from a T-die at 290 ° C, and cooled on a rotating metal roll. And then solidified while applying static electricity to obtain an unstretched film. Then, the unstretched film was heated to 90 ° C. by a roll stretching machine to be stretched 3.5 times (longitudinal direction) to a length of 3.5 times. the layers coating coating solution a (Table 1), the coating amount after drying was coated with a 0.
- a hatched gravure roll (diameter: 60 cm, number of lines: 45 lines) in which a coating liquid N1-1 for forming a near-infrared absorbing layer is brought into contact with a ceramic doctor blade at an angle of 50 degrees and a contact pressure of 0.3 MPa. / 2. 54 cm, depth: 290 ⁇ m, cell volume: 1 39 cm 3 / m 2 ) were reverse-rotated to continuously apply to a long base film. After that, it was led to a drying oven, passed through a drying zone at a temperature of 40 ° C and a wind speed of 5 mZ seconds in 20 seconds (first drying step), and then passed through a drying zone at a temperature of 150 ° C and a wind speed of 2 OmZ seconds. After passing through for 20 seconds (second drying step), it was further passed through a cooling zone having a temperature of 90 ° C. and a wind speed of 2 Om / sec for 10 seconds (cooling step) to be dried.
- An on-line color difference meter (MCPD-3000, manufactured by Otsuka Electronics) was installed between the exit of the drying oven and the winding of the near-infrared absorbing film.
- the speed ratio GZF of the rotation speed G of the Daravia roll to the film running speed F is gradually changed from 0.90 to 0.94 so that the L value measured by this online color difference meter becomes almost constant.
- the drying temperature was gradually changed from 150 ° C to 152 ° C so that the value a and the value b became constant. In this way, a long near-infrared absorbing film was continuously manufactured while controlling the color tone in the longitudinal direction of the film, and was wound into a roll. Table 11 shows the evaluation results of this near-infrared absorbing film.
- Experiment 5-1 the control of the L value during continuous production of a long near-infrared absorbing film was performed by adjusting the tangent angle (inner angle) between the doctor plate and the gravure roll. It was gradually changed to degrees. The other conditions were the same as in Experiment 5-1.
- a long near-infrared absorbing film was continuously manufactured and wound into a roll. Table 11 shows the evaluation results of the near-infrared absorbing film.
- the maximum value of the color difference ⁇ (MD) in the longitudinal direction of the near-infrared absorbing film was small, and the variation of the color tone in the longitudinal direction of the film was suppressed.
- the appearance of the coating film of the near-infrared absorbing layer was also very good.
- the near-infrared absorbing film obtained in Experiment 5-4 showed a larger color tone variation during continuous production than the near-infrared absorbing film obtained in Experiment 5-1.
- the speed ratio G / F had to be changed significantly, and finally the color tone of the near-infrared absorbing film also fluctuated slightly.
- the final speed ratio GZF was also set to a large value (1.2), the thickness unevenness such as the horizontal step became larger in the later stage of manufacturing.
- the near-infrared absorbing film obtained in Experiment 5-5 the fluctuation of the color tone during continuous production was large, and the fluctuation of the color tone in the longitudinal direction of the near-infrared absorbing film was also large. In addition, the appearance of the coating film of the near-infrared absorbing layer became more streaky in the later stages of production. Furthermore, in the near-infrared absorbing film obtained in Experiments 5-6, the variation of the color tone in the longitudinal direction was larger than in the near-infrared absorbing film obtained in Experiments 5-5, and the appearance of the near-infrared absorbing layer was deteriorated. This is probably because the amount of the coating liquid applied fluctuated due to the wear of the doctor blade.
- a shaded gravure roll (diameter: 60 cm, number of lines: 45 lines) in which a coating liquid N2-1 for forming a near infrared absorbing layer is brought into contact with a ceramic doctor blade at an angle of 50 degrees and a contact pressure of 0.3 MPa. / 2. 54 cm, depth: 290 m, cell volume: 1 39 cm 3 / m 2 ), and continuously applied to a long base film by reverse rotation. After that, it is led to a drying oven, passed through a drying zone at a temperature of 40 ° C and a wind speed of 5m / s in 20 seconds (first drying step), and subsequently dried at a temperature of 150 ° C and a wind speed of 20m / s. After passing through the zone for 20 seconds (second drying step), it was further passed through a cooling zone having a temperature of 90 and a wind speed of 2 Om / sec for 10 seconds (cooling step) to be dried.
- An online color difference meter (MCP-3000, manufactured by Otsuka Electronics) was installed between the exit of the drying oven and the winding of the near infrared absorbing film.
- This online color difference meter The speed ratio G / F of the rotation speed G of the gravure roll to the film running speed F is gradually changed from 0.90 to 0.94 so that the measured L value becomes substantially constant.
- the drying temperature was gradually changed from 150 ° C to 152 ° C so that the a and b values were constant. In this way, a long near-infrared absorbing film was continuously manufactured while controlling the color tone in the longitudinal direction of the film, and was wound into a roll. Table 12 shows the evaluation results of the near-infrared absorbing film.
- Experiment 6-1 the process control during continuous production of a long near-infrared absorbing film was performed using an online spectrophotometer (MCPD-30000, manufactured by Otsuka Electronics) instead of color tone.
- the transmission was performed at a light transmittance of 585 nm, and the speed ratio F / G was gradually changed from 0.90 to 0.95 so that the transmittance was almost constant.
- a long near-infrared absorbing film was continuously manufactured and wound into a roll in the same manner as in Experiment 6-1.
- Table 12 shows the evaluation results of the near-infrared absorbing film.
- Experiment 6-1 the material of the doctor blade was changed to Swedish steel, and the speed ratio G / F was gradually changed from 0.90 to 1.2 while controlling the L value with an online color difference meter.
- a long near-infrared absorbing film was continuously manufactured and wound into a roll in the same manner as in Experiment 6-1 except that the film was made to run.
- Table 12 shows the evaluation results of the near-infrared absorbing film.
- the near-infrared absorbing films obtained in Experiments 6-1 to 6-6 have transmittances in the near-infrared region and the visible light region (neon light region) having an orange wavelength. Low, high transmittance in the visible light range other than orange. Furthermore, the maximum value of the color difference ⁇ ⁇ (MD) in the longitudinal direction of the film is small, and the fluctuation of the color tone in the longitudinal direction of the film is suppressed. Further, the appearance of the near-infrared absorbing layer is also very good.
- the near-infrared absorbing film obtained in Experiments 6-5 and 6-6 showed a larger variation in the color tone during manufacturing than the near-infrared absorbing film obtained in Experiment 6-1. , Slightly larger).
- the speed ratio GZF had to be changed significantly, and the final film color tone fluctuated slightly.
- the final speed ratio GZF was also increased (Experiment 6-5: 1.2, Experiment 6-6: 1.13), unevenness in the thickness of the horizontal step, etc., was late in the production of long near-infrared absorbing films. It became big.
- a coating liquid N2-1 for forming a near-infrared absorbing layer was applied to the substrate film.
- the equipment used for the application was a diagonal gravure roll (diameter: 60 cm, number of lines: 45 lines, Z 2.54 cm, depth: 290 ⁇ m, cell volume: 139 cm Vm 2 ).
- a doctor blade made of ceramic was brought into contact with this, and the gravure opening was re-performed and applied.
- the running speed F of the base film is 2 OmZ
- the rotation speed of the gravure roll is 18 mZ (speed ratio GZF is 0.9)
- the kiss length is 10 mm
- the tension in the MD direction at the coated part of the base film is was 0. TNZmm 2.
- a sample of 15 cm ⁇ 15 cm was cut out from the near-infrared absorbing film, and a total of 9 samples of 5 cm ⁇ 5 cm were cut out.
- L * (using a C light source) was measured for these nine samples using a colorimeter (ZE2000, manufactured by Nippon Denshoku Industries Co., Ltd.), and the difference between the maximum and minimum values was determined.
- This unstretched PET sheet is heated to 100 ° C by a heated jaw group and an infrared heater, and then stretched 3.5 times in the longitudinal direction by a roll group having a difference in peripheral speed.
- a coating liquid N 1-3 for forming a near infrared absorbing layer having the composition shown in Table 16 was prepared.
- This coating liquid, the first adhesion gravure roll to one side of the modified layer was laminated base film (D-1), with the coating amount 7 ⁇ 0 g / m applied at 2 after drying After drying with hot air at 130 ° C for 1 minute, a near-infrared absorbing film No. 1 was obtained.
- the content of the diimmonium salt-based compound with respect to the resin was 3.4% by mass.
- Table 18 and FIG. 5 show the evaluation results of the near-infrared absorbing film No. 1.
- FIG. 5 is a transmittance curve obtained by measuring the spectral characteristics of the near-infrared absorbing film No. 1.
- Near-infrared absorbing film No. 4 was produced in the same manner as in Experiment 9-1-1 except that the resin used for the near-infrared absorbing layer was changed to the following copolyester resin. Table 18 also shows the evaluation results of the near-infrared ray absorption film No.4.
- a near-infrared absorbing film No. 5 was produced in the same manner as in Experiment 9-1-1, except that the resin for forming the near-infrared absorbing layer was changed to the following acryl-based polymer. Table 18 also shows the evaluation results of the near-infrared absorbing film No. 5.
- t-butyl methacrylate 60 parts by mass
- ethyl acetate 120 parts by mass
- methanol 120 parts by mass
- azobisisobutyronitrile 0.51 parts by mass
- methyl methacrylate 42 parts by mass
- acrylate 17.4 parts by mass
- 2-hydroxyethyl acrylate 0.6 parts by mass
- ethyl acetate 120 parts by mass as a solvent.
- 120 parts by mass of methanol and 0.51 part by mass of azobisisobutyronitrile as a catalyst were added, and the reaction was carried out for 8 hours while stirring at 60 ° C. under a nitrogen atmosphere.
- the reaction solution was put into hexane, and the polymer was reprecipitated to obtain a copolymer acrylic resin (A-4).
- the weight average molecular weight of the copolymerized acrylic resin (A-4) was 100,000.
- Near-infrared absorbing film was prepared in the same manner as in Experiment 9-1-1, except that the near-infrared absorbing dye contained in the near-infrared absorbing layer was changed to only a dithiol metal complex-based compound (Mitsui Chemicals, SIR-128) '. No. 8 was obtained. Table 18 also shows the evaluation results of this near-infrared absorbing film No. 8.
- Copolyester resin with fluorene ring
- No. 6 and No. 7 show large changes in spectral characteristics and color tone in the evaluation of environmental stability.
- the near-infrared absorbing film No. 8 is a reference example that does not contain a dimonium salt-based compound as a near-infrared absorbing dye. Although the environmental stability evaluation result is good, the absorption in the near infrared region is poor. I have.
- the near-infrared absorbing film No. 9 is a reference example in which the content of the diimmonium salt-based compound, which is a near-infrared absorbing dye, exceeds a suitable range, and is more environmentally stable than the near-infrared absorbing films No. 1 to No. 5. There are large changes in spectral characteristics and color tone in the evaluation of properties.
- Experiment 9-11 A 38 OA tin oxide layer was formed on the surface of the near-infrared absorbing layer of the near-infrared absorbing film No. 1 prepared in 1-11 using a high-frequency magnetron sputtering device, and then a DC magnetron sputtering device was used. Then, a silver layer of 20 OA was formed, and a tin oxide layer of 41 OA was formed by the above-mentioned method, thereby providing an electromagnetic wave shielding layer. The surface resistance of the near-infrared absorbing film No. 1 after the formation of the electromagnetic wave shielding layer was about 4 ⁇ .
- a hard coat layer was provided on the surface of the first adhesive property modification layer on the side where the near-infrared absorbing layer was not provided, of the near-infrared absorbing film No. 1 produced in Experiment 9-11.
- the hard coat layer is formed by applying a UV-curable resin composition obtained by adding 4 parts by mass of benzophenone to 100 parts by mass of an epoxy acrylic resin to the surface of the first adhesion-modified layer by a percoat method, After pre-drying at C for 5 minutes, the composition was cured by irradiation with ultraviolet rays at 500 mJ / cm 2 .
- the thickness of the hard coat layer after hardening was 5 ⁇ .
- Experiment 9 Near-infrared absorbing film prepared in 1-1 1. Near / infrared absorbing layer surface was laminated with copper foil of 9 / xm thickness through acrylic UV-curable adhesive. The copper foil was subjected to pattern jungling using, and an etching treatment was performed to form an electromagnetic wave shielding layer. At this time, the copper foil line width was about 15 ⁇ , the pitch was 115 Azm, and the aperture ratio was 75%.
- Photopolymerizable monomer 100 parts by mass
- diethoxybenzophenone photoreaction initiator
- silicone-based surfactant 1 part by mass
- methylethylketone 50 parts by mass
- acetic acid A coating solution containing 50 parts by mass of ethylene and 50 parts by mass of isopropanol is applied by a gravure coating method, irradiated with a high-pressure mercury lamp at 300 mJ / cm 2 , and a hard layer having a thickness of 3.5 is formed. Formed.
- a thin film layer of MgF was formed (thickness: 0.1 ⁇ m) by a vacuum deposition method using electron beam heating, and an anti-reflection layer was formed.
- this film was installed with an antireflection layer on the front side of a 42-inch wide plasma display (PDS 4211J-H, manufactured by Fujitsu), no significant reflection of external light was observed.
- the front panel of the 42-inch wide plasma display (Fujitsu, PDS421 1J-H) was removed, and near-infrared absorbing film No. 1 was installed as a near-infrared absorbing filter. No malfunction was found in the remote control device.
- Experiment 9-1-1 immediately after applying the coating solution for the near-infrared absorbing layer N 1-3, drying was performed at 40 ° C for 1 minute, and further dried at 130 ° C for 1 minute.
- a long near-infrared absorbing film was produced in the same manner as in Experiment 9-1-1, except that the experiment was performed.
- the maximum transmittance from a wavelength of 820 nm to 1100 nm was 13%
- the minimum transmittance from a wavelength of 450 nm to 650 nm was 65%.
- the produced long near-infrared absorbing film was cut into 15 cm in the longitudinal direction and 15 cm in the width direction of the film. Next, look at the surface of the cut sample. Visual observation revealed no coating spots. Furthermore, the cut sample was cut into 5 cm ⁇ 5 cm, and a total of 9 samples were collected. The difference between the maximum and minimum L * values of the nine samples obtained was 0.6.
- Experiment 9-5-1 except that the coating liquid for forming the near-infrared absorbing layer N 1-3 was applied and dried at 130 ° C for 1 minute 5 seconds after coating, the experiment was changed to one-step drying.
- a long near-infrared absorbing film was produced in the same manner as in 9-11.
- the maximum transmittance from a wavelength of 820 nm to 1100 nm was 13%
- the minimum transmittance from a wavelength of 450 nm to 650 nm was 65%.
- a film was cut out in the same manner as in Experiments 9-16. Next, when the surface of the cut sample was visually observed, coating spots were observed.
- Nine samples were cut out in the same manner as in Experiment 9-5-1. The difference between the maximum and minimum L * values of the nine samples obtained was 2.0.
- the dye (abbreviated by Kyowa Hakko Kogyo Co., Ltd., SD-184) that absorbs near the neon light emission wavelength was added to the coating liquid N1-3 for forming the near-infrared absorbing layer used in Experiment 9-11 as described in Table 16.
- a long near-infrared absorbing film was obtained in the same manner as in Experiment 9-1-1, except that 0.067 parts by mass was contained.
- the obtained near-infrared absorbing film has the same results as in Experiment 9-1-1, except that it has a selectively steep absorption peak at a wavelength of 585 nm and a transmittance at that wavelength of 30%. there were.
- cyclic iminoester UV absorber (CYASOR B UV-3638; 2,2 '-(1,4-phenylene) bis (4H—3,1 benzoxazine), manufactured by Cytec Co., Ltd.) 10 90 parts by mass of polyethylene terephthalate (PET) resin (manufactured by Toyobo Co., Ltd., ME 553) containing no parts by mass and particles are mixed and kneaded. The mixture is melt-kneaded using an extruder, and extruded in a strand form from a die nozzle. did. The extrusion temperature at this time was 285 ° C, and the extrusion time was 7 minutes. Next, the strand was cooled in a water bath, and then cut to produce a master batch chip.
- PTT polyethylene terephthalate
- the filter used was a filter material of stainless sintered body (nominal filtration accuracy: a removal rate of particles of 10 ⁇ m or more: 95%).
- the resin temperature of the flat die was set to 275 ° C.
- the resin melt-extruded into a sheet is wound around a casting drum (roll diameter 400 ⁇ , R a 0.1 / xm or less) at a surface temperature of 30 by an electrostatic application casting method, cooled and solidified, and then unstretched film. made.
- the discharge rate at this time was 48 kg / hr, and the obtained unstretched sheet had a width of 30 Omm and a thickness of 1400.
- a long base film was prepared by laminating the first adhesion modifying layer on both sides.
- a near-infrared absorbing layer was provided on one side of the substrate film obtained by laminating the adhesion improving layer obtained above on both sides in the same manner as in Experiment 9-1-1, to produce a long near-infrared absorbing film. .
- the near-infrared absorbing film obtained above was subjected to a light resistance acceleration test.
- Ultraviolet ray auto fade meter manufactured by Suga Test Instruments Co., XL- 75
- irradiation test using black Kupaneru temperature 6 3 ° C, humidity 50%, illuminance 50 W / m 2, carried out under the conditions of irradiation time 24 hours, the test before and after
- the transmittance of the sample at the maximum absorption wavelength in the near-infrared region was measured.
- the transmittance before the test was T
- the transmittance after the test was 1 ⁇ . From the measured values, the near-infrared absorbing ability residual ratio R (%) was determined by the following formula (16) and found to be 90% or more.
- the near-infrared absorption filter of the present invention like the conventional near-infrared absorption filter, not only absorbs unnecessary near-infrared light emitted from the display, can prevent malfunction of precision equipment, but also has a specific surface activity. Due to the presence of the agent, the formability (appearance) of the near-infrared absorbing layer is extremely good, and the quality of the completed near-infrared absorbing filter is also excellent. In addition, it can not only perform color correction by absorbing light of the orange wavelength that reduces color purity, but also has excellent anti-reflection properties and UV absorption, so it has excellent optical properties and durability, especially Deterioration of near-infrared absorbing dye due to ultraviolet light included in external light can be suppressed.
- the near-infrared absorbing layer is formed via an adhesion modifying layer composed of an adhesion modifying resin having a specific acid value, even after being left under high temperature and high humidity for a long time, the spectral characteristics can be improved. And changes in color are small. And, since resin is the main constituent material, it is excellent in processability, lightweight, and costs can be kept low.
- the near-infrared absorbing film of the present invention has a small variation in color tone in the longitudinal direction of a long film, it is possible to reduce the difference in color tone due to the machine of the plasma display to be manufactured. Since the variation in color tone in the width direction of the film is small, when used in a filter for a plasma display, the variation in color tone can be suppressed over the entire display screen, and the appearance of the near-infrared absorbing layer is excellent, Since it has very few technical disadvantages, it can be suitably used as an optical filter for a display device or the like that requires a function of absorbing near-infrared rays such as a plasma display.
- the near-infrared absorbing film of the present invention is composed of a film having a multi-layer structure without laminating a plurality of films. Anti-reflection ability and excellent light transmittance in the visible light region can be secured. And, by making the film thinner, the workability of sticking to the object to be stuck (plasma display panel) can be improved, and it is also economical.
- a near-infrared absorbing film having a highly excellent appearance can be favorably produced.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
- Laminated Bodies (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04771749A EP1657573A4 (en) | 2003-08-11 | 2004-08-11 | NEAR-INFRARED RADIATION-ABSORBING FILM, PROCESS FOR THE PRODUCTION THEREOF, INFRARED RADIATION-ABSORBING FILM ROLLER, PROCESS FOR PRODUCING THE SAME, AND NEAR INFRARED RADIATION-ABSORBING FILTER |
US10/567,761 US20060257760A1 (en) | 2003-08-11 | 2004-08-11 | Near-infrared absorbing film, and process for production the same, near-infrared absorbing film roll, process for producing the same and near-infrared absorbing filter |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003291787A JP3809830B2 (ja) | 2003-08-11 | 2003-08-11 | 近赤外線吸収フィルター |
JP2003-291785 | 2003-08-11 | ||
JP2003-291787 | 2003-08-11 | ||
JP2003291785 | 2003-08-11 | ||
JP2003-434288 | 2003-12-26 | ||
JP2003434288A JP3809836B2 (ja) | 2003-12-26 | 2003-12-26 | 近赤外線吸収フィルムの製造方法 |
JP2003-432735 | 2003-12-26 | ||
JP2003432735A JP3809835B2 (ja) | 2003-12-26 | 2003-12-26 | 近赤外線吸収フィルムの製造方法 |
JP2003434290A JP3736557B2 (ja) | 2003-12-26 | 2003-12-26 | 近赤外線吸収フィルター |
JP2003-434290 | 2003-12-26 | ||
JP2004-180939 | 2004-06-18 | ||
JP2004180939A JP3891191B2 (ja) | 2003-06-18 | 2004-06-18 | 近赤外線吸収フィルムおよびプラズマディスプレイ用前面フィルター |
Publications (3)
Publication Number | Publication Date |
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WO2005014270A2 true WO2005014270A2 (ja) | 2005-02-17 |
WO2005014270A3 WO2005014270A3 (ja) | 2005-03-31 |
WO2005014270A9 WO2005014270A9 (ja) | 2005-05-12 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/011788 WO2005014270A2 (ja) | 2003-08-11 | 2004-08-11 | 近赤外線吸収フィルムおよびその製造方法、近赤外線吸収フィルムロールおよびその製造方法、並びに近赤外線吸収フィルター |
Country Status (4)
Country | Link |
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EP (1) | EP1657573A4 (ja) |
KR (1) | KR100581313B1 (ja) |
TW (1) | TWI249043B (ja) |
WO (1) | WO2005014270A2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8354159B2 (en) * | 2005-06-22 | 2013-01-15 | Toyo Boseki Kabushiki Kaisha | Polyamide based mixed resin laminated film roll and a process for producing the same |
US9958575B2 (en) | 2014-06-11 | 2018-05-01 | Zirco Applied Materials Co., Ltd. | Near-infrared ray shielding film, a method thereof, and a composition thereof |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102005018704B4 (de) | 2005-04-21 | 2019-05-29 | Hexion GmbH | Härtbare Mischung, Verfahren zu deren Herstellung und gehärtetes Produkt |
KR100953556B1 (ko) * | 2007-02-08 | 2010-04-21 | 주식회사 엘지화학 | 근적외선 흡수용 pdp 필터 |
KR100992922B1 (ko) * | 2007-08-29 | 2010-11-09 | 삼성코닝정밀소재 주식회사 | 디스플레이 장치용 필터 및 이를 구비하는 디스플레이 장치 |
WO2011037032A1 (ja) * | 2009-09-23 | 2011-03-31 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
US9366942B2 (en) * | 2011-12-09 | 2016-06-14 | Omnivision Technologies, Inc. | IR-cut filter having red absorbing layer for digital camera |
TWI463194B (zh) * | 2012-03-30 | 2014-12-01 | Sintai Optical Shenzhen Co Ltd | Infrared cutoff filter structure |
KR101571831B1 (ko) * | 2013-08-12 | 2015-11-25 | 주식회사 태광뉴텍 | 기능성 코팅층을 포함하는 기능성 투명 시트 및 그 제조방법 |
TW201518763A (zh) * | 2013-11-07 | 2015-05-16 | Morrison Opto Electronics Ltd | 複合型濾光元件 |
KR102608694B1 (ko) * | 2018-04-18 | 2023-12-04 | 삼성전자 주식회사 | 디스플레이 아래에 배치된 센서에 의해 반사된 광을 차단하기 위한 편광 부재 및 위상 지연 부재를 포함하는 전자 장치 |
WO2022012868A1 (en) * | 2020-07-17 | 2022-01-20 | Evatec Ag | Biometric authentication system |
KR102549741B1 (ko) * | 2021-12-14 | 2023-06-29 | 한남대학교 산학협력단 | 플래쉬 처리방법을 이용한 유연기판에 코팅된 산화물 반도체 박막의 제조방법 |
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JP3206940B2 (ja) * | 1991-12-16 | 2001-09-10 | ダイセル化学工業株式会社 | 近赤外線吸収メタクリル系樹脂組成物及びその成形体 |
JPH06250390A (ja) * | 1993-02-26 | 1994-09-09 | Nippon Oil & Fats Co Ltd | 光硬化性樹脂組成物 |
JPH0812926A (ja) * | 1994-06-28 | 1996-01-16 | Sekisui Chem Co Ltd | 感光性樹脂組成物の製造方法 |
JP3764069B2 (ja) * | 1996-04-18 | 2006-04-05 | カネボウ株式会社 | 近赤外線吸収フィルムを含む多層パネルとそれを用いた映像出力装置 |
TW417025B (en) * | 1997-04-10 | 2001-01-01 | Sumitomo Chemical Co | Front plate for plasma display |
JPH11167350A (ja) * | 1997-12-03 | 1999-06-22 | Mitsubishi Chemical Corp | プラズマディスプレイパネル用前面フィルターおよびその製造方法 |
CA2289335A1 (en) * | 1998-11-11 | 2000-05-11 | Nisshinbo Industries, Inc. | Near infrared absorption filter |
JP2000212480A (ja) * | 1999-01-21 | 2000-08-02 | Toray Ind Inc | 赤外線吸収性ハ―ドコ―ト被膜 |
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JP2002060644A (ja) * | 2000-08-21 | 2002-02-26 | Mikuni Color Ltd | ジスアゾ化合物、その製法および前記ジスアゾ化合物からなる着色剤 |
JP2002175020A (ja) * | 2000-09-29 | 2002-06-21 | Fuji Photo Film Co Ltd | 光学フィルターおよび画像表示装置 |
CN1281975C (zh) * | 2000-10-13 | 2006-10-25 | 日本清水产业株式会社 | 光学材料用组合物、光学材料及塑料透镜 |
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JP4015429B2 (ja) * | 2002-01-31 | 2007-11-28 | 富士フイルム株式会社 | 反射防止フィルム、偏光板およびディスプレイ装置 |
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2004
- 2004-08-10 TW TW093123895A patent/TWI249043B/zh not_active IP Right Cessation
- 2004-08-11 WO PCT/JP2004/011788 patent/WO2005014270A2/ja active IP Right Grant
- 2004-08-11 EP EP04771749A patent/EP1657573A4/en not_active Withdrawn
- 2004-08-11 KR KR1020057003457A patent/KR100581313B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8354159B2 (en) * | 2005-06-22 | 2013-01-15 | Toyo Boseki Kabushiki Kaisha | Polyamide based mixed resin laminated film roll and a process for producing the same |
US9958575B2 (en) | 2014-06-11 | 2018-05-01 | Zirco Applied Materials Co., Ltd. | Near-infrared ray shielding film, a method thereof, and a composition thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2005014270A3 (ja) | 2005-03-31 |
KR20060024314A (ko) | 2006-03-16 |
EP1657573A2 (en) | 2006-05-17 |
WO2005014270A9 (ja) | 2005-05-12 |
KR100581313B1 (ko) | 2006-05-22 |
TW200521491A (en) | 2005-07-01 |
TWI249043B (en) | 2006-02-11 |
EP1657573A4 (en) | 2009-10-21 |
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