WO2017159448A1 - 積層部材及びタッチパネル - Google Patents
積層部材及びタッチパネル Download PDFInfo
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- WO2017159448A1 WO2017159448A1 PCT/JP2017/008913 JP2017008913W WO2017159448A1 WO 2017159448 A1 WO2017159448 A1 WO 2017159448A1 JP 2017008913 W JP2017008913 W JP 2017008913W WO 2017159448 A1 WO2017159448 A1 WO 2017159448A1
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- Prior art keywords
- transparent electrode
- conductive layer
- electrode layer
- compound
- acrylate
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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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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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
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
Definitions
- the present invention relates to a laminated member and a touch panel.
- a transparent electrode made of indium tin oxide (hereinafter referred to as ITO) or the like is formed on the base material in the display area, and the surrounding wiring is formed on the base material in the non-display area around it. It is formed and a part is connected with the transparent electrode.
- the peripheral wiring is intended to transmit the capacitance change caused by the touch operation to the display area to the IC driver as an electric signal, and a method of applying a conductive paste by a screen printing method or the like (for example, Patent Document 1).
- the surrounding wiring is formed using a conductive paste made of general resin and metal powder, the electrical connectivity between the transparent electrode and the surrounding wiring deteriorates after environmental load such as high temperature and high humidity. It had been.
- an object of the present invention is to provide a laminated member that is excellent in connectivity between a transparent electrode formed on a substrate and surrounding wiring, and environmental load resistance.
- the present inventors have determined that the direct cause of the deterioration of electrical connectivity after a high-temperature and high-humidity environment is a fine crack generated in the transparent electrode, and the cause is a conductive paste whose surrounding wiring is It was found that the organic binder remained in the unreacted portion of the organic binder. The unreacted site was affected by heat and humidity in a high-temperature and high-humidity environment, and the reaction gradually progressed, and it was predicted that the resulting curing shrinkage force caused fine cracks in the transparent electrode.
- the present invention comprises a transparent electrode layer A formed on a substrate, and a conductive layer B partially formed on the transparent electrode layer A and partially on the substrate, the conductive layer B being And a laminated member containing conductive particles (a), an organic binder resin (b) having a polar group, and a compound (c) having a hydroxypyridine skeleton in one molecule.
- the present invention it is possible to provide a laminated member that is excellent in the connectivity between the transparent electrode formed on the substrate and the surrounding wiring and the environmental load resistance.
- the laminated member of the present invention includes a transparent electrode layer A formed on a base material, and a conductive layer B formed partly on the transparent electrode layer A and partly on the base material.
- Layer B is a laminated member containing conductive particles (a), an organic binder resin (b) having a polar group, and a compound (c) having a hydroxypyridine skeleton in one molecule.
- the base material provided in the laminated member of the present invention refers to a support for forming a transparent electrode layer, a conductive layer or the like on the surface thereof.
- the substrate include a rigid substrate such as glass, a glass epoxy substrate, or a ceramic substrate, and a flexible substrate using a film such as polyester, polyimide, or cycloolefin.
- a laminated member as a touch panel, glass, a polyethylene terephthalate film, or a cycloolefin film is preferable from the viewpoint of transparency.
- a modification treatment and a protective film may be formed on the surface of the substrate.
- the transparent electrode layer A formed on the base material is not a flat layer applied to the entire surface, but is a pattern of an arbitrary shape that is patterned using a printing resist or a photoresist. That is, the transparent electrode layer A does not completely cover the base material, and the base material is exposed at a portion where the pattern of the transparent electrode layer A is not formed.
- the transparent electrode layer A is composed of only a conductive component or contains a conductive component.
- the conductive component constituting the transparent electrode layer A for example, indium, tin, zinc, gallium, antimony, titanium, zirconium, magnesium, aluminum, gold, silver, copper, palladium, tungsten, or an oxide of these metals, A carbon nanotube is mentioned.
- ITO is indium tin oxide, indium zinc oxide, indium oxide-zinc oxide composite oxide, aluminum zinc oxide, gallium zinc oxide, fluorine zinc oxide, fluorine indium oxide, Examples thereof include antimony tin oxide (hereinafter referred to as ATO) or fluorine tin oxide.
- ATO antimony tin oxide
- ITO or ATO which has high conductivity and visible light transmittance and is advantageous in terms of price, is preferable.
- Examples of the method for forming the transparent electrode layer before pattern processing include a vacuum deposition method, a sputtering method, an ion plating method, and a coating method.
- the thickness of the transparent electrode layer A is preferably 0.01 to 0.5 ⁇ m and more preferably 0.05 to 0.3 ⁇ m in order to achieve both good conductivity and visible light transmittance.
- the thickness of the transparent electrode layer A is 0.05 ⁇ m or more, it is possible to suppress variations in resistance value and to suppress the influence of fine cracks that occur under a high temperature and high humidity environment load.
- the thickness of the transparent electrode layer A is 0.3 ⁇ m or less, the visible light transmittance can be increased.
- the conductive layer B contains conductive particles (a), an organic binder resin (b) having a polar group, and a compound (c) having a hydroxypyridine skeleton in one molecule.
- the conductive layer B is not a flat layer applied to the entire surface, and may be a pattern having an arbitrary shape. In this case, the conductive layer B does not completely cover and hide the base material and the transparent electrode layer A, but the base material and / or the transparent electrode layer A is exposed at a portion where the pattern of the conductive layer B is not formed. It has become a state.
- Examples of the conductive particles (a) contained in the conductive layer B include silver, gold, copper, platinum, lead, tin, nickel, aluminum, tungsten, molybdenum, chromium, titanium, indium, and alloys of these metals. Silver, gold or copper having high conductivity is preferable, and silver which is highly stable and advantageous in terms of price is more preferable.
- the aspect ratio which is a value obtained by dividing the major axis length by the minor axis length, is preferably 1.0 to 3.0, and preferably 1.0 to 2.0. It is more preferable.
- the aspect ratio of the conductive particles (a) is 1.0 or more, the contact probability between the conductive particles is further increased.
- the aspect ratio of the conductive particles (a) is 2.0 or less, the exposure light is hardly shielded when the pattern of the conductive layer B is formed by a photolithography method, and the development margin is widened.
- the aspect ratio of the conductive particles (a) was determined by observing the conductive particles (a) at a magnification of 15000 times using a scanning electron microscope (SEM) or transmission electron microscope (TEM), and randomly conducting 100 conductive particles.
- SEM scanning electron microscope
- TEM transmission electron microscope
- the primary particles of the active particles are selected, the major axis length and the minor axis length of each are measured, and the aspect ratio is obtained from the average value of both.
- the particle size of the conductive particles (a) is preferably 0.05 to 2.0 ⁇ m, more preferably 0.1 to 1.5 ⁇ m.
- the particle size of the conductive particles (a) is 0.05 ⁇ m or more, the interaction between the particles is weak, and the dispersed state of the conductive particles is easily maintained.
- the particle size of the conductive particles (a) is 2.0 ⁇ m or less, the edge of the pattern of the formed conductive layer B can be sharpened.
- the particle size of the conductive particles (a) contained in the conductive layer B is determined by adding a resin component to an organic solvent such as tetrahydrofuran (hereinafter referred to as THF) obtained by physically collecting the conductive layer B with tweezers or an adhesive tape.
- THF tetrahydrofuran
- Dissolved and settled conductive particles were collected and dried at 70 ° C. for 10 minutes using a box oven, and observed with an electron microscope at a magnification of 15000 times, and randomly 20 conductive particles.
- the primary particles can be selected, the maximum width of each can be measured, and the average value thereof can be obtained.
- the organic solvent used at this time is not particularly limited as long as it can dissolve the resin component of the conductive layer B.
- the proportion of the conductive particles (a) contained in the conductive layer B is preferably 60 to 95% by mass.
- the proportion of the conductive particles (a) is 60% by mass or more, the contact probability between the conductive particles and the transparent electrode layer A is increased, and the wiring resistance value of the laminated member of the present invention can be stabilized.
- the proportion of the conductive particles (a) is 95% by mass or less, the conductivity of the conductive layer B when the laminated member of the present invention is bent can be further stabilized.
- the ratio of the conductive particles (a) contained in the conductive layer B can be determined by measuring the firing residue of the collected conductive layer B using a thermogravimetric analyzer.
- the polar group of the organic binder resin (b) having a polar group contained in the conductive layer B refers to a carboxyl group, a hydroxyl group, and an amino group
- the organic binder resin (b) is a thermosetting resin used in a conductive paste.
- Thermoplastic resins are preferred, and specific examples include acrylic resins, polyester resins, phenol resins, epoxy resins, acrylic urethane resins, polyether urethane resins, phenoxy resins, polycarbonates, polyimides, polyamideimides, polyamides, etc. Or it can use in combination of 2 or more types.
- the organic binder resin (b) is preferably an acrylic resin, an epoxy resin, a polyester resin, an acrylic urethane resin, or a polyether urethane resin from the viewpoints of adhesion to a substrate and flexibility.
- the organic binder resin (b) having a polar group has a urethane skeleton, the curing shrinkage force can be relaxed, and damage to the transparent conductive layer can be reduced.
- the organic binder resin (b) has a polar group, so that it can form a strong interaction with the compound having a hydroxypyridine skeleton, and suppresses the movement of the organic binder resin (b) under high temperature and high humidity.
- the probability of contact with unreacted sites or with the curing agent can be reduced, and as a result, the progress of the reaction can be suppressed.
- the polar group is a carboxyl group, the effect is high, which is preferable.
- the organic binder resin (b) having a polar group is preferably an acrylic copolymer or epoxycarboxylate resin having a carboxyl group, and the substrate, the transparent electrode layer A
- An epoxy carboxylate resin is more preferable from the viewpoint of adhesiveness.
- An acrylic copolymer having a carboxyl group can be obtained by copolymerizing an acrylic monomer and an unsaturated acid such as an unsaturated carboxylic acid as a copolymerization component.
- acrylic monomers examples include acrylic acid (hereinafter referred to as AA), methyl acrylate, ethyl acrylate (hereinafter referred to as EA), 2-ethylhexyl acrylate, n-butyl acrylate (hereinafter referred to as BA), iso- Butyl acrylate, iso-propane acrylate, glycidyl acrylate, butoxytriethylene glycol acrylate, dicyclopentanyl acrylate, dicyclopentenyl acrylate, 2-hydroxyethyl acrylate, isobornyl acrylate, 2-hydroxypropyl acrylate, isodexyl acrylate, Isooctyl acrylate, lauryl acrylate, 2-methoxyethyl acrylate, methoxyethylene glycol acrylate, methoxydiethylene glycol Acrylate, octafluoropentyl acrylate, phenoxyethyl acrylate, ste
- the unsaturated acid examples include AA, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, vinyl acetate, and acid anhydrides thereof.
- the acid value of the resulting acrylic copolymer can be adjusted by the amount of the unsaturated acid used as the copolymer component.
- the epoxycarboxylate compound refers to a compound that can be synthesized using an epoxy compound and a carboxyl compound having an unsaturated double bond as starting materials.
- Examples of the epoxy compound that can be a starting material include glycidyl ethers, alicyclic epoxy resins, glycidyl esters, glycidyl amines, and epoxy resins. More specifically, for example, methyl glycidyl ether, ethyl glycidyl ether, butyl glycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether Bisphenol A diglycidyl ether, hydrogenated bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, bisphenol fluorenediglycidyl ether, biphenol diglycidyl ether, tetramethylbiphenol glycidyl ether, trimethyl
- Examples of the carboxyl compound having an unsaturated double bond that can be used as a starting material include (meth) acrylic acid, crotonic acid, cinnamic acid, and ⁇ -cyanocinnamic acid.
- the acid value of the epoxycarboxylate compound may be adjusted by reacting the epoxycarboxylate compound with the polybasic acid anhydride.
- the polybasic acid anhydride include succinic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, itaconic anhydride, 3-methyltetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, anhydrous Examples include trimellitic acid or maleic anhydride.
- the epoxy carboxylate compound becomes You may adjust the quantity of the reactive unsaturated double bond which has.
- Urethane may be formed by reacting the hydroxy group of the epoxycarboxylate compound with a diisocyanate compound.
- the diisocyanate compound include hexamethylene diisocyanate, tetramethylxylene diisocyanate, naphthalene-1,5-diisocyanate, tridenic diisocyanate, trimethylhexamethylene diisocyanate, isophorone diisocyanate, allyl cyanide diisocyanate, and norbornane diisocyanate.
- the acid value of the organic binder resin (b) having a polar group is preferably 50 to 250 mgKOH / g. ⁇ 150 mg KOH / g is more preferred.
- the acid value is 50 mgKOH / g or more, the solubility in the developer is increased, and the generation of development residues can be suppressed. If the acid value is 250 mgKOH / g or less, excessive dissolution in the developer can be suppressed, and film loss at the pattern forming portion can be suppressed.
- the acid value of the organic binder resin (b) can be measured according to JIS K 0070 (1992).
- the compound (c) having a hydroxypyridine skeleton in one molecule contained in the conductive layer B only needs to have a hydroxypyridine skeleton in one molecule, and is introduced in the form of a single compound or a salt thereof. Also good.
- pyridoxine having a methylol group 4-deoxypyridoxine, pyridoxal, pyridoxamine, pyridoxal-5-phosphate, 4-pyridoxy acid, isopyridoxal, 2-hydroxymethyl-3-pyridinol, 2-hydroxymethyl-6-methyl-3- Pyridinol, 2,6-bis (hydroxymethyl) -3-pyridinol, ginkotoxin, pyridoxine dicaprylate, pyridoxal oxime, 6- (hydroxymethyl) -3,4-pyridinediol, 2-bromo-6- (hydroxymethyl) -3-pyridinol, 2,5-dichloro-6- (hydroxymethyl) -3-pyridinol, 2-chloro-6- (hydroxymethyl) -4-iodo-3-pyridinol, 3- (hydroxymethyl) -6- Methyl-4-quinori Lumpur, pyridoxine 3,4 dipalmitate, and these salts are preferred because they can be
- the amount of the compound (c) having a hydroxypyridine skeleton in one molecule contained in the conductive layer B is preferably 0.1 to 20 parts by mass with respect to 100 parts by mass of the organic binder resin (b) having a polar group. It is added in a range, more preferably 0.5 to 10 parts by mass.
- the amount of the compound (c) having a hydroxypyridine skeleton in one molecule is 0.1 parts by mass or more, more preferably 0.5 parts by mass with respect to 100 parts by mass of the organic binder resin (b) having a polar group. If it is as described above, the effect of stabilizing electrical connectivity after high temperature and high humidity is enhanced.
- the amount of the compound (c) having a hydroxypyridine skeleton in one molecule is 20 parts by mass or less, more preferably 10 parts by mass or less with respect to 100 parts by mass of the organic binder resin (b) having a polar group. If it exists, the adhesiveness of the transparent electrode layer A and the conductive layer B can be made high. Regarding the identification and content of the compound (c) having a hydroxypyridine skeleton in one molecule contained in the conductive layer B, the collected conductive layer B is subjected to solvent extraction or the like, and the obtained sample is subjected to IR, 1 H- It can obtain
- the thickness of the conductive layer B is preferably 1.0 to 10.0 ⁇ m. If the thickness of the conductive layer B is 1.0 ⁇ m or more, variation in resistance can be suppressed. If the thickness of the conductive layer B is 10.0 ⁇ m or less, the amount of curing shrinkage that occurs under high temperature and high humidity becomes small, and the effect of stabilizing electrical connectivity becomes high.
- the touch panel of the present invention includes the laminated member of the present invention. More specifically, the laminated member of the present invention is suitably used as a member for a touch panel. Examples of the touch panel method include a resistive film type, an optical type, an electromagnetic induction type, and a capacitance type. In particular, a capacitance type touch panel requires particularly fine wiring.
- the laminated member which formed the pattern of the conductive layer B using the photosensitive electrically conductive paste which is an aspect is used more suitably. In a touch panel provided with such a pattern of the conductive layer B as the peripheral wiring of the touch panel and the peripheral wiring is 50 ⁇ m pitch (wiring width + inter-wiring width) or less, the non-display area can be narrowed and the display area is widened. be able to.
- each example and comparative example are as follows.
- a polymerization reaction was further performed for 6 hours. Thereafter, 1 g of hydroquinone monomethyl ether was added to stop the polymerization reaction. Subsequently, a mixture consisting of 5 g GMA, 1 g triethylbenzylammonium chloride and 10 g DMEA was added dropwise over 0.5 hours. After completion of the dropwise addition, an additional reaction was performed for 2 hours. The obtained reaction solution was purified with methanol to remove unreacted impurities, and further dried under vacuum for 24 hours to obtain a resin (b-2). The acid value of the obtained resin (b-2) was 83 mgKOH / g.
- Example 1 ⁇ Formation of transparent electrode layer A> A biaxial centrifugal polyethylene terephthalate (PET) film having a thickness of 30 ⁇ m was prepared as a substrate. An ITO thin film made of ITO having a thickness of 50 nm (0.05 ⁇ m) was formed on the surface of the base material using a sputtering apparatus equipped with an ITO sintered body target.
- PET polyethylene terephthalate
- ⁇ Pattern processing of ITO thin film> After laminating a photoresist film on the ITO thin film, a photomask is adhered, and the photoresist is exposed at an exposure amount of 200 mJ / cm 2 with an exposure machine having an ultra-high pressure mercury lamp, and a 1 mass% sodium carbonate aqueous solution at 30 ° C. The photoresist is patterned by spray development for 30 seconds. And after etching ITO with 0.1 mass% hydrochloric acid aqueous solution, the resist was peeled off with 1 mass% sodium hydroxide aqueous solution, and the transparent electrode layer A1 patterned on the board
- composition for forming conductive layer B Put 100 g of jER828, 1.5 g of 2-hydroxypyridine, 0.5 g of Curazole 1B2MZ and 5.0 g of diethylene glycol into a 100 mL clean bottle, and rotate and revolve vacuum mixer "Awatori Rentaro" (registered) (Trademark) ARE-310 (manufactured by Shinky Co., Ltd.) to obtain 17.0 g of a resin solution (solid content: 70.6% by mass).
- the obtained 17.0 g resin solution was mixed with 68.0 g of silver particles having a particle size of 1.0 ⁇ m and an aspect ratio of 1.1, and kneaded using a three-roller mill (EXAKT M-50; manufactured by EXAKT). 85.0 g of composition B1 was obtained.
- the composition B1 is applied with a screen printer so that the thickness of the conductive layer B1 is 6 ⁇ m, and is cured at 140 ° C. for 60 minutes. B1 was formed.
- connection stability between transparent electrode A and conductive layer B The laminated member shown in FIG. 1 is manufactured by the above method, put into a high-temperature and high-humidity tank at 85 ° C. and 85% RH for 480 hours, and after taking out, the resistance value between terminals is measured.
- the rate of increase from the resistance value before the introduction of the high-temperature and high-humidity tank was determined from the following formula, and was used as the value of connection stability. The results are shown in Table 3.
- Examples 2 to 5 The laminated members shown in Tables 1 and 2 were manufactured by the same method as in Example 1, and the same evaluation as in Example 1 was performed. The results are shown in Table 3.
- Example 6 In the same manner as in Example 1, the ITO thin film was patterned on the substrate.
- the film was exposed at an exposure amount of 300 mJ / cm 2 with an exposure machine having an ultra-high pressure mercury lamp through a photomask, and 0.2 mass% sodium carbonate aqueous solution was spray-developed at a pressure of 0.1 MPa for 30 seconds, and then 140 ° C. Was cured for 60 minutes to produce a laminated member shown in FIG.
- Examples 7 to 14 The laminated members shown in Tables 1 and 2 were manufactured by the same method as in Example 6, and the same evaluation as in Example 1 was performed. The results are shown in Table 3.
- Examples 1 to 14 it can be seen that a laminated member excellent in the connectivity between the transparent electrode and the surrounding wiring and the environmental load resistance can be produced.
- the laminated member of the present invention can be suitably used as a constituent element of a touch panel.
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Abstract
Description
[透明電極層Aの材料]
・ITO(酸化インジウム97質量%、酸化スズ3質量%)
・ATO
[極性基を有する有機バインダー樹脂(b)]
・jER(登録商標)828(三菱化学(株)製)
・ARUFON(登録商標)UC-3000(東亞合成(株)製)(以下、UC-3000と称す)
・樹脂(b-1)~(b-4)。
共重合比率(質量基準):EA/メタクリル酸2-エチルヘキシル(以下、2-EHMAと称す)/BA/N-メチロールアクリルアミド(以下、MAAと称す)/AA=20/40/20/5/15
窒素雰囲気の反応容器中に、150gのジエチレングリコールモノエチルエーテルアセテート(以下、DMEAと称す)を仕込み、オイルバスを用いて80℃まで昇温した。これに、20gのEA、40gの2-EHMA、20gのBA、5gのMAA、15gのAA、0.8gの2,2’-アゾビスイソブチロニトリル及び10gのDMEAからなる混合物を、1時間かけて滴下した。滴下終了後、さらに6時間重合反応を行った。その後、1gのハイドロキノンモノメチルエーテルを添加して、重合反応を停止した。得られた反応溶液をメタノールで精製することで未反応不純物を除去し、さらに24時間真空乾燥することで、樹脂(b-1)を得た。得られた樹脂(b-1)の酸価は103mgKOH/gであった。
共重合比率(質量基準):EA/2-EHMA/スチレン(以下、Stと称す)/グリシジルメタクリレート(以下、GMAと称す)/AA=30/30/25/5/10
窒素雰囲気の反応容器中に、150gのDMEAを仕込み、オイルバスを用いて80℃まで昇温した。これに、30gのEA、30gの2-EHMA、25gのSt、10gのAA、0.8gの2,2’-アゾビスイソブチロニトリル及び10gのDMEAからなる混合物を、1時間かけて滴下した。滴下終了後、さらに6時間重合反応を行った。その後、1gのハイドロキノンモノメチルエーテルを添加して、重合反応を停止した。引き続き、5gのGMA、1gのトリエチルベンジルアンモニウムクロライド及び10gのDMEAからなる混合物を、0.5時間かけて滴下した。滴下終了後、さらに2時間付加反応を行った。得られた反応溶液をメタノールで精製することで未反応不純物を除去し、さらに24時間真空乾燥することで、樹脂(b-2)を得た。得られた樹脂(b-2)の酸価は83mgKOH/gであった。
窒素雰囲気の反応溶液中に、492.1gのカルビトールアセテート、860.0gのEOCN-103S(日本化薬(株)製;クレゾールノボラック型エポキシ樹脂;エポキシ当量:215.0g/当量)、288.3gのAA、4.92gの2,6-ジ-tert-ブチル-p-クレゾール及び4.92gのトリフェニルホスフィンを仕込み、98℃の温度で反応液の酸価が0.5mgKOH/g以下になるまで反応させ、エポキシカルボキシレート化合物を得た。引き続き、この反応液に169.8gのカルビトールアセテート及び201.6gのテトラヒドロ無水フタル酸を仕込み、95℃で4時間反応させ、樹脂(b-3)を得た。得られた樹脂(b-3)の酸価は104mgKOH/gであった。
窒素雰囲気の反応容器中に、368.0gのRE-310S(日本化薬(株)製;ビスフェノールA型エポキシ樹脂;エポキシ当量:184.0g/当量)、141.2gのAA、1.02gのハイドロキノンモノメチルエーテル及び1.53gのトリフェニルホスフィンを仕込み、98℃の温度で反応液の酸価が0.5mgKOH/g以下になるまで反応させ、エポキシカルボキシレート化合物を得た。その後、この反応溶液に755.5gのカルビトールアセテート、268.3gの2,2-ビス(ジメチロール)-プロピオン酸、1.08gの2-メチルハイドロキノン及び140.3gのスピログリコールを加え、45℃に昇温した。この溶液に485.2gのトリメチルヘキサメチレンジイソシアネートを、反応温度が65℃を超えないように徐々に滴下した。滴下終了後、反応温度を80℃に上昇させ、赤外吸収スペクトル測定法により、2250cm-1付近の吸収がなくなるまで6時間反応させ、樹脂(b-4)を得た。得られた樹脂(b-4)の酸価は80.0mgKOH/gであった。
・IRGACURE(登録商標)OXE-01(チバジャパン(株)製)(以下、OXE-01と称す)
[熱重合開始剤]
・パーメンタ(登録商標)H(日油(株)製)
[硬化剤]
・キュアゾール(登録商標)1B2MZ
[モノマー]
・ライトアクリレートMPD-A(共栄社化学(株)製)(以下、MPD-Aと称す)。
<透明電極層Aの形成>
基材として、厚さ30μmの二軸遠心ポリエチレンテレフタレート(PET)フィルムを用意した。基材表面に、ITOの焼結体ターゲットを備えたスパッタ装置を用いて、ITOからなる厚さ50nm(0.05μm)のITO薄膜を形成した。
ITO薄膜にフォトレジストフィルムをラミネートさせた後、フォトマスクを密着させ、超高圧水銀ランプを有する露光機で200mJ/cm2の露光量でフォトレジストを露光し、30℃の1質量%炭酸ナトリウム水溶液で30秒間スプレー現像することでフォトレジストをパターン加工する。そして0.1質量%塩酸水溶液でITOをエッチング後、1質量%水酸化ナトリウム水溶液でレジストを剥離させ、基板上にパターン加工された透明電極層A1を形成した。
100mLクリーンボトルに、10.0gのjER828、1.5gの2-ヒドロキシピリジン、0.5gのキュアゾール1B2MZ及び5.0gのジエチエングリコールを入れ、自転-公転真空ミキサー“あわとり錬太郎”(登録商標)ARE-310((株)シンキー製)で混合して、17.0gの樹脂溶液(固形分70.6質量%)を得た。
PETフィルム上にパターン加工された透明電極層A1の表面に、組成物B1をスクリーン印刷機で導電層B1の膜厚が6μmになるように塗布し、140℃で60分間キュアを行い、導電層B1を形成した。
上記方法により図1に示す積層部材を製造し、85℃、85%RHの高温高湿槽に480時間投入し、取り出し後、端子間の抵抗値を測定する。高温高湿槽投入前の抵抗値からの上昇率を下記式から求め、それを接続安定性の値とした。結果を表3に示す。
表1、2に示す積層部材を実施例1と同様の方法で製造し、実施例1と同様の評価を行った。結果を表3に示す。
実施例1と同様の方法で、基材上にITO薄膜のパターン加工をした。
<導電層Bの形成>
基板上にパターン加工された透明電極層A6の表面に、組成物B6をスクリーン印刷機で乾燥膜の膜厚が5μmになるように塗布し、70℃で10分間熱風乾燥機で乾燥後、所定のフォトマスクを介して超高圧水銀ランプを有する露光機で300mJ/cm2の露光量で露光し、0.2質量%炭酸ナトリウム水溶液を0.1MPaの圧力で30秒間スプレー現像した後、140℃で60分間キュアを行い、図1に示す積層部材を製造した。
表1、2に示す積層部材を実施例6と同様の方法で製造し、実施例1と同様の評価を行った。結果を表3に示す。
表1、2に示す積層部材を実施例1と同様の方法で製造し、実施例1と同様の評価を行った。結果を表3に示す。
表1、2に示す積層部材を実施例6と同様の方法で製造し、実施例1と同様の評価を行った。結果を表3に示す。
2 透明電極層A
3 導電層B
Claims (6)
- 基材上に形成された透明電極層Aと、
一部が前記透明電極層A上と一部が基材上とに形成された導電層Bとを備え、
前記導電層Bが、導電性粒子(a)と極性基を有する有機バインダー樹脂(b)と一分子中にヒドロキシピリジン骨格を有する化合物(c)とを含有する積層部材。 - 前記一分子中にヒドロキシピリジン骨格を有する化合物(c)がメチロール基を有する請求項1記載の積層部材。
- 前記透明電極層Aの厚みが0.5μm以下である、請求項1又は2記載の積層部材。
- 前記極性基を有する有機バインダー樹脂(b)の極性基がカルボキシル基を含む、請求項1~3のいずれか一項記載の積層部材。
- 前記極性基を有する有機バインダー樹脂(b)がウレタン骨格を有する、請求項1~4のいずれか一項記載の積層部材。
- 請求項1~5のいずれか一項記載の積層部材を備える、タッチパネル。
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| JP4048777B2 (ja) * | 2001-12-27 | 2008-02-20 | 東レ株式会社 | 透明導電ペースト、それを用いたディスプレイ用部材およびプラズマディスプレイパネルならびにプラズマディスプレイパネル用部材の製造方法 |
| JP4238124B2 (ja) * | 2003-01-07 | 2009-03-11 | 積水化学工業株式会社 | 硬化性樹脂組成物、接着性エポキシ樹脂ペースト、接着性エポキシ樹脂シート、導電接続ペースト、導電接続シート及び電子部品接合体 |
| TW200420694A (en) * | 2003-04-15 | 2004-10-16 | Taiyo Ink Mfg Co Ltd | Photo-curable thermosetting conductive composition, conductive circuit using the conductive composition, and forming method thereof |
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| KR20180121875A (ko) | 2018-11-09 |
| KR20180121876A (ko) | 2018-11-09 |
| TW201800850A (zh) | 2018-01-01 |
| CN108700806A (zh) | 2018-10-23 |
| CN108701509B (zh) | 2020-02-07 |
| CN108701509A (zh) | 2018-10-23 |
| TWI697994B (zh) | 2020-07-01 |
| JP6226105B1 (ja) | 2017-11-08 |
| JPWO2017159448A1 (ja) | 2018-03-22 |
| JP6566027B2 (ja) | 2019-08-28 |
| KR102096831B1 (ko) | 2020-04-03 |
| JPWO2017159445A1 (ja) | 2019-01-17 |
| WO2017159445A1 (ja) | 2017-09-21 |
| TWI704417B (zh) | 2020-09-11 |
| TW201739029A (zh) | 2017-11-01 |
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