WO2022102559A1 - 感光性樹脂組成物、オーバーコート膜、指紋センサーおよび表示装置 - Google Patents
感光性樹脂組成物、オーバーコート膜、指紋センサーおよび表示装置 Download PDFInfo
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- WO2022102559A1 WO2022102559A1 PCT/JP2021/040931 JP2021040931W WO2022102559A1 WO 2022102559 A1 WO2022102559 A1 WO 2022102559A1 JP 2021040931 W JP2021040931 W JP 2021040931W WO 2022102559 A1 WO2022102559 A1 WO 2022102559A1
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- film
- resin composition
- photosensitive resin
- substrate
- fingerprint sensor
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- VHRYZQNGTZXDNX-UHFFFAOYSA-N methacryloyl chloride Chemical compound CC(=C)C(Cl)=O VHRYZQNGTZXDNX-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229950002083 octabenzone Drugs 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
Definitions
- the present invention relates to a photosensitive resin composition suitable for an overcoat film such as a fingerprint sensor, and a resin film, an overcoat film, a fingerprint sensor, and a display device using the same.
- the conventional photosensitive resin composition is mainly applied to applications such as a resin film of a color filter, and is designed on the premise that even a thin film having a thickness of about 2 ⁇ m can be a strong cured film. ..
- the resin used as the main agent of the conventional photosensitive resin composition is, for example, an alkali having a double bond equivalent of 2000 or less as shown in Patent Document 1. Soluble resin was the preferred choice.
- a heat-curable resin composition is used instead of the photosensitive resin composition for the overcoat film used in the display device provided with the fingerprint sensor.
- the heat-curable resin composition is used, it is photosensitive. There is a problem that it cannot be processed into a fine pattern as obtained by a photolithography method using a sex resin composition, and cannot be applied to an overcoat film of a high-performance fingerprint sensor.
- the present invention provides a photosensitive resin composition capable of forming an overcoat film having a low film stress even if it is a thick film, which is suitable for producing an overcoat film of a display device equipped with a high-performance fingerprint sensor.
- the purpose is to do.
- the present invention is a photosensitive resin composition containing (1) an alkali-soluble resin, (2) a polymerizable compound, and (3) a photopolymerization initiator, wherein the double bond equivalent of the (1) alkali-soluble resin is described above.
- the present invention is a resin film obtained by curing the above-mentioned photosensitive resin composition.
- Another aspect of the present invention is an overcoat film for a fingerprint sensor having a film thickness of 4 ⁇ m or more and 15 ⁇ m or less, and the transmittance for light having a wavelength of 380 to 780 nm per 9 ⁇ m thickness of the overcoat film is a wavelength of 380 to 780 nm. It is an overcoat film for a fingerprint sensor which is 90 to 100% in the entire range of.
- the present invention is a fingerprint sensor having the above-mentioned overcoat film.
- the present invention is a display device provided with the fingerprint sensor described above.
- the photosensitive resin composition of the present invention it is possible to obtain a weakly crosslinked overcoat film that exhibits flexibility after film film photocuring, and an overcoat film having a low film stress even if it is a thick film.
- the transmittance for light having a wavelength of 380 to 780 nm when the resin film is formed with a film thickness of 9 ⁇ m is 90 to 100%, even when a film with a thick film thickness is formed, almost all of the color is exhibited. It is possible to obtain an almost colorless and transparent film having very high visibility. Therefore, even when applied to an overcoat film used in a display device provided with a fingerprint sensor, there is an effect that the display performance of the display device is maintained.
- the fingerprint sensor and the display device of the present invention have a problem that the process passability in the manufacturing process is deteriorated and a problem that the display performance of the display device is deteriorated by having an overcoat film made of the above resin composition. It has the effect of improving.
- the photosensitive resin composition of the present invention is a photosensitive resin composition containing (1) an alkali-soluble resin, (2) a polymerizable compound and (3) a photopolymerization initiator, and is the above-mentioned (1) alkali-soluble resin.
- the double bond equivalent is 2000 or more and 5000 or less, and the transmittance of the resin film having a thickness of 9 ⁇ m obtained from the photosensitive resin composition with respect to light having a wavelength of 380 to 780 nm is 90 to 100 in the entire range of wavelengths of 380 to 780 nm. %.
- the (1) alkali-soluble resin referred to in the present invention means a resin containing a unit derived from an unsaturated carboxylic acid as a polymerization unit.
- unsaturated carboxylic acid include a monocarboxylic acid such as acrylic acid, methacrylic acid, crotonic acid or vinylacetic acid, a dicarboxylic acid such as itaconic acid, maleic acid or fumaric acid, or an acid anhydride thereof. It is particularly preferred to include units derived from acrylic acid or methacrylic acid.
- the double bond equivalent in the present invention is a numerical value obtained by dividing the weight average molecular weight of the alkali-soluble resin by the number of double bonds in one molecule of the alkali-soluble resin.
- the double bond equivalent of an alkali-soluble resin in a general photosensitive resin composition is often about 100 to 1000, and if the double bond equivalent is higher than this, the crosslink density of the double bond portion decreases and photocuring occurs. It tends to be inadequate.
- an alkali-soluble resin having a higher double bond equivalent is intentionally selected so that a resin film applicable to the overcoat film of the fingerprint sensor can be formed.
- the polymer main chain will not be separated even if stress is applied to the polymer main chain, and the polymer main chain will be efficiently deformed according to the stress.
- the entropy elasticity is improved.
- the resin film composed of the polymer main chain having such improved entropy elasticity has flexibility and the film stress is relieved.
- the number of double bonds in the alkali-soluble resin becomes too large, the crosslink density becomes too high, the obtained resin film becomes hard, and the flexibility is impaired.
- an overcoat film such as a fingerprint sensor as described above
- an overcoat film having such a film thickness is formed, it must have a crosslinked structure that maximizes the above-mentioned entropy elasticity.
- the present inventors have found that such an effect can be obtained by selecting an alkali-soluble resin having a double bond equivalent of 2000 or more and 5000 or less. Further, from the viewpoint of improving the photosensitivity at the time of subsequent development, the double bond equivalent is more preferably 2500 or more and 4000 or less.
- the transmittance of a resin film having a film thickness of 9 ⁇ m with respect to light having a wavelength of 380 to 780 nm can be measured as follows.
- a resin film having a film thickness of 9 ⁇ m is formed on the substrate under the conditions described in Examples described later.
- measure the light transmittance according to JIS K7361-1 ISO 13468-1
- the method itself in which a near-parallel light bundle emitted from the ejection slit of a spectrophotometer is incident from the vertical direction of the resin film surface formed on the transparent substrate, and the transmitted light is received by an integrating sphere for measurement. Is.
- the transmittance of the substrate on which the resin film is formed and the transmittance of the substrate on which the resin film is not formed are measured, and the transmittance of the substrate on which the resin film is formed is used to determine the transmittance of the substrate on which the resin film is not formed. By subtracting the transmittance, the transmittance of the resin film can be calculated.
- the transmittance referred to in the present invention is the total light transmittance.
- the transmittance of the resin film having a film thickness of 9 ⁇ m may be measured as follows using a photosensitive resin composition.
- the solid content of the photosensitive resin composition of the present invention is diluted (10000/9) times with a solvent, and the solid content is filled in a spectrophotometer cell having an optical path length of 1 cm for measurement. Since the concentration of the solute and the optical path length are inversely proportional to each other according to the Lambert-Beer law, the transmittance measured by this method corresponds to the transmittance of a resin film having a thickness of 9 ⁇ m.
- the solid content is all the components of the photosensitive resin composition excluding the solvent.
- the numerical value of the transmittance as the resin film is the same.
- the volume shrinkage of the photosensitive resin composition before and after curing the photosensitive resin composition under the condition of an exposure amount of 70 mJ / cm 2 It is preferably 8% or less.
- An overcoat film made of a photosensitive resin composition having such a low volume shrinkage has a small curing shrinkage in the film direction (that is, the left-right direction of the paper surface in FIG. 1) when photocured, and the overcoat film is overcoated. This is because the difference in expansion ratio between the film and the substrate is small, so that the film stress is also reduced. Therefore, the photosensitive resin composition can be formed into an overcoat film having a lower film stress.
- the peeling distortion from the substrate is reduced and the adhesion with the substrate is improved.
- the peeling of the overcoat film from the substrate is also reduced in the developing process when the overcoat film is patterned.
- the volume shrinkage in the curing reaction can be calculated by the following formula by measuring the density of the photosensitive resin composition before and after curing.
- the density of the photosensitive resin composition before curing is 1.0 g / cm 3
- the density of the cured resin composition obtained by curing the photosensitive resin composition is 1.09 g / cm 3 or 1.10 g / cm 3 . If so, the volume shrinkage (%) is about 8% or about 9%, respectively.
- Volume shrinkage rate (%) (1- (Density of photosensitive resin composition before curing / Density of cured resin after curing)) ⁇ 100.
- the photosensitive resin composition before curing is a photosensitive resin composition composed of a solid substance after the solvent is scattered by using a vacuum dryer.
- the cured resin is a product obtained by irradiating the photosensitive resin composition before curing with ultraviolet rays under the condition of an exposure amount of 70 mJ / cm 2 and exposing it to photo-curing.
- the densities of the photosensitive resin composition before curing and the cured resin after curing can be measured by an underwater substitution method (Archimedes method). More specifically, the density ( ⁇ ) can be determined by the following formula using, for example, the specific gravity measuring kid AD-1653 manufactured by A & D Co., Ltd. and distilled water as a replacement liquid.
- A is the mass of the solid matter in the air
- B is the weight in the replacement liquid (distilled water) body
- ⁇ 0 is the density of the replacement liquid (distilled water) at the measurement temperature
- d is the density of the air. It represents (0.001 g / cm 3 ).
- (1) as an alkali-soluble resin a double bond equivalent of 2000 or more and 5000 or less, and a skeleton derived from acrylic acid or methacrylic acid and a substitution or carbon content of 5 or more are used.
- a resin containing a unit having an unsubstituted alkyl group may be selected.
- a tricyclodecane skeleton such as tricyclodecanyl (meth) acrylate, tricyclodecanedimethanol di (meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, etc.
- a resin containing a unit having a dicyclopentadiene skeleton is preferable.
- the alkali-soluble resin has an ethylenically unsaturated group such as a vinyl group, an allyl group, an acrylic group or a methacrylic group in the side chain.
- an ethylenically unsaturated group such as a vinyl group, an allyl group, an acrylic group or a methacrylic group in the side chain.
- an ethylenically unsaturated compound having an epoxy group or acrylic acid or methacrylic acid chloride is used for the carboxyl group or hydroxyl group of the alkali-soluble resin. Examples thereof include a method of causing an addition reaction.
- examples of the ethylenically unsaturated compound having an epoxy group include an ethylenically unsaturated compound having a glycidyl group or an alicyclic epoxy group.
- an acrylic group or a methacrylic group is preferable.
- Benzylacrylamide or (3,4-epoxycyclohexyl) methyl (meth) acrylate isolycidylacrylate.
- the acid value of the alkali-soluble resin is preferably 20 to 200 (mgKOH / g), more preferably 30 to 150 (mgKOH / g) in order to obtain an appropriate alkali developability.
- the content of the acrylic soluble resin in the photosensitive resin composition is preferably 30% by mass or more and 70% by mass or less in the solid content, and more preferably 35% by mass or more and 65% by mass or less in the solid content.
- 30% by mass or more in the solid content the film stress of the overcoat film is relaxed.
- 70% by mass or less in the solid content the solubility of the overcoat film during development, that is, the patterning property can be improved.
- the solid content in the present invention means all the components contained in the photosensitive resin composition excluding the solvent.
- the photosensitive resin composition of the present invention contains (2) a polymerizable compound.
- the polymerizable compound is a compound having an ethylenically unsaturated double bond.
- the above-mentioned (1) alkali-soluble resin has a relatively high molecular weight, and is slightly inferior in development solubility, that is, patterning characteristics when forming a fine pattern. Furthermore, since it is formed of a thick film, even if an ethylenically unsaturated group is introduced into the side chain or the acid value or solid content is optimized, a film residue (development residue) tends to remain. (2) By containing a polymerizable compound, it can be reduced.
- polymerizable compound examples include bisphenol A diglycidyl ether (meth) acrylate, poly (meth) acrylate carbamate, modified bisphenol A epoxy (meth) acrylate, adipic acid 1,6-hexanediol (meth) acrylic acid ester, and anhydrous.
- Oligomers such as phthalic acid propylene oxide (meth) acrylic acid ester, trimellitic acid diethylene glycol (meth) acrylic acid ester, rosin-modified epoxy di (meth) acrylate, alkyd-modified (meth) acrylate, tripropylene glycol di (meth) acrylate, 1 , 6-Hexanediol di (meth) acrylate, bisphenol A diglycidyl ether di (meth) acrylate, trimethylol propanetri (meth) acrylate, tetratrimethylol propanetri (meth) acrylate, pentaerythritol tri (meth) acrylate, tri.
- Acrylic formal pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, bisphenoxyethanol full orange acrylate, dicyclopentanedienyldiacrylate or alkyl variants thereof, alkyl Examples thereof include ether-modified products and alkyl ester-modified products. Two or more of these may be contained.
- those having 3 or more ethylenically unsaturated bonds in one molecule are preferable, and those having 5 or more ethylenically unsaturated bonds in one molecule are preferable. More preferred.
- the polymerizable compound is preferably a polymerizable compound containing a hydroxy group.
- the hydroxy group has a high affinity with an alkaline developer, and the polymerizable compound having the hydroxy group has a very high solubility in an alkaline developer. Therefore, in the developing step, when the photosensitive resin composition contains a polymerizable compound containing a hydroxy group, the alkaline developer can easily permeate into the details of the obtained resin coating film, and the film residue can be reduced. As a result, the patterning characteristics of the resin coating film are improved, and a high-performance fingerprint sensor can be manufactured.
- Examples of the polymerizable compound containing a hydroxy group and having three or more ethylenically unsaturated double bonds in one molecule include pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and dipentaerythritol pentaacrylate. Pentaerythritol triacrylate is particularly preferred.
- the content of the (2) polymerizable compound in the photosensitive resin composition is preferably 25% by mass or more and 65% by mass or less in the solid content, and more preferably 30% by mass or more and 60% by mass or less in the solid content.
- the photosensitive resin composition of the present invention contains (3) a photopolymerization initiator. This is to trigger the reaction of unsaturated double bonds present in the (1) alkali-soluble resin and (2) polymerizable compound, and to prevent adverse effects due to unreacted double bonds.
- a photopolymerization initiator As in the present invention, (1) when the double bond equivalent of the alkali-soluble resin is 2000 or more, photocuring tends to be insufficient as described in Patent Document 1. If a large amount of double bond residues remain with insufficient photocuring of the resin film, not only the effect of membrane stress relaxation cannot be obtained, but also the residues become poor and the stability over time deteriorates. There is also a problem.
- the photosensitive resin composition of the present invention since the photosensitive resin composition of the present invention must form a thick film, the degree of photocuring varies between the surface and the deep part of the film (that is, the proportion of double bond residues varies). It occurs, and development defects are likely to occur. Therefore, a photopolymerization initiator that allows the exposed light rays to reach not only the surface but also the deep part uniformly is preferable so that such a situation does not occur.
- the photopolymerization initiator having such a function include a photobleach-based photopolymerization initiator. With the photobleach-based photopolymerization initiator, light is generated by cleaving as the reaction of the double bond progresses. It is a photopolymerization initiator whose absorption decreases.
- the photopolymerization initiator may precipitate as an impurity.
- the content of the photopolymerization initiator is preferably 1% by mass or more and 10% by mass or less in the solid content. When the content of the photopolymerization initiator is 1% by mass or more, development defects are less likely to occur. On the other hand, when the content of the photopolymerization initiator is 10% by mass or less, the amount of impurities deposited from the overcoat film is small, and lighting defects of the display device can be suppressed.
- the photosensitive resin composition of the present invention has a transmittance of 90 to 100% for light having a wavelength of 380 to 780 nm when a resin film having a film thickness of 9 ⁇ m is formed in the entire range of wavelengths of 380 to 780 nm.
- a film having a transmittance of 90% or more at a wavelength of 380 to 780 nm becomes a colorless and transparent film with almost no visual coloring, and is applied to an overcoat film used in a display device equipped with a high-performance fingerprint sensor. Even so, the display performance of the display device is maintained. Therefore, the photosensitive resin composition of the present invention can be suitably used for display devices equipped with a fingerprint sensor.
- the transmittance converted to a thickness of 9 ⁇ m is applied according to the following Lambert-Beer law. For example, when the thickness of the resin film is 4.5 ⁇ m and the transmittance at that thickness is 97.0%, the transmittance converted to a thickness of 9 ⁇ m is 94.1%. On the other hand, when the thickness of the resin film is 13.5 ⁇ m and the transmittance at that thickness is 86.1%, the transmittance converted to the thickness of 9 ⁇ m is 91.0%. log (1 / T) ⁇ b ⁇ c (T; light transmittance, b; optical path length (corresponding to the film thickness of the resin film), c: concentration of solute (corresponding to the concentration of the solid content of the photosensitive resin composition)).
- the photosensitive resin composition of the present invention is applied to a 4-inch silicon wafer substrate to form a coating film, exposed to ultraviolet rays under the condition of an exposure amount of 70 mJ / cm 2 , and then exposed to 230.
- the film stress calculated from the change in the amount of deflection of the silicon wafer substrate before and after the formation of the resin film when the resin film having a thickness of 9 ⁇ m is formed by heating for 30 minutes using an oven at ° C. is 5 MPa or more and 30 MPa or less. Is preferable.
- the film stress is a stress defined in the center surface of the wall thickness in a shell structure whose wall thickness is sufficiently smaller than the radius of curvature of the center surface (curved surface) of the wall thickness, and is defined by the following Stoney formula. Defined.
- Membrane stress ⁇ (Pa) E / (1- ⁇ ) ⁇ h 2 / 6t ⁇ ( 1 / R 1-1 / R 0 )
- E / (1- ⁇ ) is a biaxial elastic modulus of the substrate, and in the case of a silicon wafer substrate, it is 1.805 ⁇ 10-11 Pa.
- h is the thickness of the substrate (m)
- t is the thickness of the resin film (m)
- R 1 is the radius of curvature of the substrate after the resin film is formed (m)
- R 0 is before the resin film is formed. It is the radius of curvature (m) of the substrate of.
- Examples of the method for measuring R 0 and R 1 include a method in which R 0 is measured in advance before the resin film is formed, and then R 1 is measured after the resin film is formed. If R 0 cannot be measured in advance, R 1 is measured on the substrate on which the resin film is formed, and another substrate with exactly the same specifications as the substrate on which the resin film is formed is prepared and R 0 is measured. (A separately prepared substrate on which a resin film is not formed is used as a reference).
- h 2 ⁇ ( 1 / R 1-1 / R 0 ) is preferably 150 to 900 ⁇ 10 11 (m) in the above formula. ..
- the photosensitive resin composition of the present invention may further contain (4) an ultraviolet absorber.
- the content of the ultraviolet absorber is preferably 0.05% by mass or more and 8% by mass or less in the solid component.
- Examples of the ultraviolet absorber having excellent photosensitivity while maintaining transparency (4) include benzotriazole-based compounds, benzophenone-based compounds, and triazine-based compounds. Two or more of these may be contained. Specifically, octabenzone, 2- [2-hydroxy-3- (3,4,5,6-tetrahydrophthalimide-methyl) -5-methylphenyl] benzotriazole, 2,4-bis (1-methyl-1).
- the photosensitive resin composition may further contain a surfactant.
- a surfactant By containing the surfactant, the coatability of the photosensitive resin composition and the surface smoothness of the obtained resin film can be improved.
- the surfactant include anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, fluorosurfactants, silicone-based surfactants and the like. Two or more of these may be contained.
- the content of the surfactant in the photosensitive resin composition is preferably 0.01% by mass or more in the solid content from the viewpoint of improving the coatability of the photosensitive resin composition, and improves the surface smoothness of the overcoat film. From the viewpoint, it is preferably 1% by mass or less in the solid content.
- the photosensitive resin composition may further contain an organic solvent, an adhesion improver, a polymerization inhibitor and the like.
- organic solvent include acetate-based solvents, (poly) alkylene glycol ether-based solvents, aliphatic ester-based solvents, aliphatic alcohol-based solvents, ketone-based solvents, hydrocarbon-based solvents and the like. Two or more of these may be contained.
- the content of the organic solvent in the photosensitive resin composition is preferably 40% by mass or more from the viewpoint of improving the coatability, and preferably 95% by mass or less from the viewpoint of improving the drying characteristics.
- adhesion improving agent include a silane coupling agent.
- 3-methacryloxypropyltrimethoxysilane and 3-acryloxypropyltrimethoxysilane are preferable. Two or more of these may be contained.
- the content of the adhesion improver in the photosensitive resin composition is preferably 10% by mass or less, and more preferably 5% by mass or less in the solid content from the viewpoint of suppressing impurities.
- Examples of the polymerization inhibitor include hydroquinones and catechols. Two or more of these may be contained.
- the content of the polymerization inhibitor in the photosensitive resin composition is preferably 0.001% by mass or more in the solid content from the viewpoint of improving stability, and 1% by mass or less in the solid content from the viewpoint of suppressing a decrease in sensitivity. Is preferable.
- the photosensitive resin composition preferably does not contain a metal such as chromium or iron. If the obtained cured film contains a large amount of metal, display defects will occur in the display device.
- the metal content in the photosensitive resin composition is preferably 0.001% by weight or less, more preferably 0.0001% by mass or less in the solid content.
- the metal content in the photosensitive resin composition can be measured by, for example, an ICP emission spectrophotometer.
- the method for producing the photosensitive resin composition of the present invention is not particularly limited, and it is preferable to produce it by a general-purpose method.
- the photopolymerization initiator and the solvent are placed in a container such as a flask, and if necessary, other additives are added, and then the mixture is stirred and dissolved, and the alkali-soluble resin and the polymerizable compound are added. If necessary, the other additives may be added, and the mixture may be further stirred for 20 minutes to 3 hours to obtain the product.
- the obtained photosensitive resin composition may be filtered.
- the above-mentioned photosensitive resin composition is applied onto a substrate to form a coating film.
- the film in this state is also called a coating film.
- the coating film is dried.
- This drying process may be referred to as pre-baking, and the dried coating film may be referred to as pre-baking film.
- the prebake film is exposed and then developed to form a pattern.
- the exposed portion is cured by exposing the prebake film through a mask, and the unexposed portion is removed by developing with an alkaline developer in the developing step to form a negative pattern. Is preferable.
- the obtained photo-cured product pattern is further heated and thermally cured.
- the film after this heat curing is called a resin cured film.
- these films may be collectively referred to as a resin film.
- the resin film formed on the substrate may be particularly referred to as an overcoat film.
- Examples of the method for applying the photosensitive resin composition include microgravure coating, spin coating, dip coating, curtain flow coating, roll coating, spray coating, slit coating, and inkjet coating.
- the substrate examples include transparent substrates such as glass plates and polymer films.
- a color layer made of a black matrix or a colored resin may be provided on the substrate.
- the drying method examples include vacuum drying, heat drying using an oven or a hot plate, and the like.
- the heating temperature is preferably 100 ° C. or lower from the viewpoint of suppressing recondensation of the solvent on the inner wall of the vacuum chamber.
- the vacuum drying pressure is preferably equal to or lower than the vapor pressure of the solvent contained in the resin film, and is preferably 1 to 1000 Pa.
- the vacuum drying time is preferably 10 to 600 seconds.
- the heating temperature is preferably 50 to 120 ° C., and the heating time is preferably 1 to 60 minutes.
- the formed resin coating film can be formed into a fine pattern for a fingerprint sensor by developing it after exposure.
- the exposed portion is cured by exposing the resin film through a photomask, and the unexposed portion is removed by developing with an alkaline developer in the developing step to obtain a fine pattern.
- the obtained fine pattern may be heated and thermoset.
- the Hole diameter of the fine pattern for the fingerprint sensor is preferably 40 ⁇ m or less, more preferably 30 ⁇ m. If the Hole diameter is 40 ⁇ m or less, patterning of the notch portion and the frame portion of the display becomes possible.
- Examples of the exposure machine used in the exposure process include a stepper, a mirror projection mask aligner (MPA), a parallel light mask aligner (PLA), and a lens scan.
- Examples of the exposure light source include ultraviolet rays such as i-line, h-line, and g-line, a KrF (wavelength 248 nm) laser, and an ArF (wavelength 193 nm) laser.
- the exposure amount is preferably about 10 to 500 mJ / cm 2 (in terms of exposure amount at a wavelength of 365 nm). It may be exposed through a desired mask or may be exposed without a mask.
- Examples of the developing method in the developing process include methods such as showering, dipping, and paddle. A method of immersing the exposed film in a developing solution for 5 to 10 minutes is preferable.
- Examples of the developing solution include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, inorganic alkalis such as carbonates, phosphates, silicates and borates; 2-diethylaminoethanol and monoethanolamine. , Amines such as diethanolamine; alkaline developing solutions such as aqueous solutions containing tetramethylammonium hydroxide, quaternary ammonium salts such as choline and the like. After development, it is preferable to rinse with water.
- thermosetting temperature is preferably 80 to 280 ° C.
- the heating time is preferably 5 to 60 minutes.
- the thermosetting time is set to 5 minutes or more, the barrier property of the resin film can be improved.
- the thermosetting time is set to 60 minutes or less, heat fading of the resin film can be suppressed and high transmittance can be maintained.
- the resin film of the present invention includes protective films for touch panels, various hard coat materials, flattening films for TFTs, overcoats for color filters, various protective films such as antireflection films, optical filters, insulating films for touch sensors, and insulation for TFTs. It can be suitably used for various purposes such as a membrane. In particular, it can be suitably used as an overcoat film used in an image display device provided with a fingerprint sensor.
- the overcoat film requires a relatively thick overcoat film by design, but the resin-cured film of the present invention has low film stress and high visible light transparency even if the film is thick. Moreover, it can be processed into a fine pattern.
- a display device equipped with a fingerprint sensor is a display device having a fingerprint sensor installed on the image display surface of the image display device and having a function of detecting a fingerprint by placing a finger on the image display portion.
- a fingerprint sensor a known fingerprint sensor can be used.
- the position for detecting the fingerprint is not limited to a specific position, and the fingerprint can be detected at a plurality of positions in the image display portion.
- the overcoat film for a fingerprint sensor of the present invention is an overcoat film for a fingerprint sensor having a film thickness of 4 ⁇ m or more and 15 ⁇ m or less, and has a transmittance of 380 to 780 nm for light with a wavelength of 380 to 780 nm per 9 ⁇ m thickness of the overcoat film. It is 90 to 100% in the entire range of to 780 nm.
- the film thickness is less than 4 ⁇ m, when applied to an overcoat film for a fingerprint sensor, visible light and infrared light for recognizing a fingerprint are reflected and the efficiency of the fingerprint sensor is lowered.
- the film thickness exceeds 15 ⁇ m, the visible light transmittance is lowered, and the display function is lowered when applied to the overcoat film for the fingerprint sensor.
- the transmittance is converted to the transmittance per 9 ⁇ m by the above conversion formula.
- the liquid crystal display device generally has a color filter substrate.
- the color filter substrate has a black matrix, colored pixels, and an overcoat film on the substrate.
- the resin film of the present invention is suitably used as the overcoat film thereof.
- the colored pixel include pixels such as red, green, and blue.
- Examples of the pattern shape of the colored pixels include a stripe shape and an island shape.
- Examples of the base material include a glass plate and a polymer film.
- a TFT liquid crystal display device or a TFD liquid crystal display device can also be manufactured by providing a thin film transistor (TFT) element or a thin film diode (TFD) element on the drive element side substrate in addition to the scanning line and the signal line.
- TFT thin film transistor
- TFD thin film diode
- the polymerization vessel was replaced with air, 97 g of glycidyl methacrylate, 1.2 g of dimethylbenzylamine and 0.2 g of p-methoxyphenol were added to the obtained reaction solution, and the mixture was stirred at 110 ° C. for 6 hours.
- 50 g of PGMEA was added to obtain a solution of the alkali-soluble resin 1 (double bond equivalent 3200, solid content 35% by mass, Mw12000).
- Example 1 16.18 g of alkali-soluble resin synthesized as described above, 6.97 g of polymerizable compound ("Pentaerythritol triacrylate” manufactured by Kyoeisha Chemical Co., Ltd.), photopolymerization initiator ("Adeca Arckles” (registered trademark) manufactured by ADEKA) NCI -930) 0.39 g, UV absorber (Tinuvin234 manufactured by BASF) 0.39 g, polymerization inhibitor (Tashari butyl catechol (hereinafter TBC) manufactured by DIC Co., Ltd.) 0.01 g, surfactant (BIC Chemie "BYK” (Registered Trademark)-333 ”) 0.040 g and 86.02 g of propylene glycol monomethyl ether as a solvent were mixed to prepare a photosensitive resin composition.
- polymerizable compound "Pentaerythritol triacrylate” manufactured by Kyoeisha Chemical Co., Ltd.)
- Examples 2 to 8, Comparative Examples 1 to 6, Reference Examples 1 to 2 A photosensitive resin composition was prepared in the same manner as in Example 1 except that the type and blending amount of each component were changed as shown in Tables 1 and 2. The content of each component in the table is all parts by mass.
- the photosensitive resin compositions prepared in each Example and Comparative Example were hydrolyzed by heating with nitric acid, sulfuric acid and perchloric acid, and then heated and dissolved with dilute nitric acid to obtain a constant volume.
- the content of metals such as chromium and iron was measured using an ICP emission spectrophotometer (PS3520 VDDII manufactured by Hitachi High-Tech Science Co., Ltd.), and the mass% with respect to the solid content in the photosensitive resin composition was calculated. The results are shown in Tables 1 and 2.
- the photosensitive resin compositions prepared in each Example and Comparative Example were applied to a 4-inch silicon wafer substrate having a thickness of 0.5 mm to form a coating film, and prebaked for 2 minutes using a hot plate at 90 ° C.
- the prebaked coating film was exposed to ultraviolet rays under the condition of an exposure amount of 70 mJ / cm 2 , and then developed for 40 seconds using a 0.0428% potassium hydroxide aqueous solution. Then, by heating for 30 minutes using an oven at 230 ° C., a resin film (resin cured film) having a film thickness of 9.0 ⁇ m was formed.
- the photosensitive resin compositions prepared in each Example and Comparative Example were applied onto a glass substrate to form a coating film, and prebaked for 2 minutes using a hot plate at 90 ° C.
- the prebaked coating film was exposed to ultraviolet rays under the condition of an exposure amount of 70 mJ / cm 2 , and then developed for 40 seconds using a 0.0428% potassium hydroxide aqueous solution.
- a resin film having a film thickness of 9.0 ⁇ m was formed by heating for 30 minutes using an oven at 230 ° C.
- the light transmittance of the resin film at a wavelength of 380 to 780 nm was measured using a high-definition CF substrate optical inspection device (LCF-100MA_SF; manufactured by Otsuka Electronics Co., Ltd.). The results are shown in Tables 1 and 2.
- the photosensitive resin compositions prepared in each Example and Comparative Example were applied to a glass substrate to form a coating film, and prebaked for 2 minutes using a hot plate at 90 ° C.
- the prebaked coating film was exposed to ultraviolet rays under the condition of an exposure amount of 70 mJ / cm 2 via a photomask having a pattern of Hole diameters of 30 ⁇ m and 40 ⁇ m, respectively, and then mask-exposed, and then a 0.0428% potassium hydroxide aqueous solution was used.
- the resin film having a film thickness of 9.0 ⁇ m was obtained by heating in an oven at 230 ° C. for 30 minutes.
- FIG. 1 shows an example of a schematic cross-sectional view when a fine pattern 2 having a Hole diameter of 40 ⁇ m is formed on a resin film 1 having a film thickness of 9.0 ⁇ m.
- FIG. 1A shows a case where the film can be formed without a film residue
- FIG. 1B shows a case where the film remains.
- Alkali-soluble resin 1 having a double bond equivalent of 3200 and containing a unit derived from tricyclodecanyl methacrylate.
- B Alkali-soluble resin 2 having a double bond equivalent of 600 and containing no unit derived from tricyclodecanyl methacrylate 2
- G Alkali-soluble resin 3 having a double bond equivalent of 2500 and containing a unit derived from tricyclodecanyl methacrylate 3
- H Alkali-soluble resin 4 having a double bond equivalent of 1900 and containing a unit derived from tricyclodecanyl methacrylate 4
- C Polymerizable compound: Pentaerythritol triacrylate
- D Photobleach-based photopolymerization initiator: Adeka Arcurus "(registered trademark) NCI-930
- E Non-photobleach-based photopolymerization initiator: ADEKA ARCLUS ”(registered trademark) NCI-831
- F Polymerizable compound:
- FIG. 2 shows an example of a schematic perspective view of the fingerprint sensor.
- the overcoat film 1 of the present invention is formed on the color filter substrate 3.
- a fine hole pattern 2 is formed on the overcoat film 1.
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Abstract
Description
体積収縮率(%)=(1-(硬化前の感光性樹脂組成物の密度/硬化後の樹脂硬化物の密度))×100。
ρ=A/(A-B)×(ρ0 -d)+d
上記式中、Aは空気中での固形物の質量、Bは置換液(蒸留水)体中での重量、ρ0は測定温度での置換液(蒸留水)の密度、dは空気の密度(0.001g/cm3)を表す。
log(1/T)∝b×c
(T;光線透過率、b;光路長(樹脂膜の膜厚に該当)、c:溶質の濃度(感光性樹脂組成物の固形分の濃度に該当))。
膜応力σ(Pa)=E/(1-ν)×h2/6t×(1/R1-1/R0)
ここで、E/(1-ν)は基板の二軸弾性係数であり、シリコンウェハー基板の場合は1.805×10-11Paである。hは基板の厚さ(m)、tは樹脂膜の厚さ(m)、R1は樹脂膜が形成された後の基板の曲率半径(m)、R0は樹脂膜が形成される前の基板の曲率半径(m)である。
84gのメタクリル酸、1.8gのベンジルメタクリレート、2.2gのトリシクロデカニルメタクリレート、3gの2,2’-アゾビス(2-メチルブチロニトリル)および220gのPGMEAを重合容器中に仕込み、窒素雰囲気下で90℃にて2時間撹拌してから液温を100℃に上げ、さらに5時間反応させた。次に、重合容器を空気置換し、得られた反応溶液に97gのメタクリル酸グリシジル、1.2gのジメチルベンジルアミンおよび0.2gのp-メトキシフェノールを添加して110℃で6時間撹拌し、反応終了時に50gのPGMEAを添加して、アルカリ可溶性樹脂1の溶液を得た(二重結合当量3200、固形分35質量%、Mw12000)。
33gのメタクリル酸メチル、33gのスチレン、34gのメタクリル酸、3gの2,2’-アゾビス(2-メチルブチロニトリル)および140gのPGMEAを重合容器中に仕込み、窒素雰囲気下で90℃にて2時間撹拌してから液温を100℃に上げ、さらに1時間反応させた。次に、空気置換し、得られた反応溶液に20gのメタクリル酸グリシジル、1.2gのジメチルベンジルアミンおよび0.2gのp-メトキシフェノールを添加して90℃で4時間撹拌し、反応終了時に30gのPGMEAを添加して、アルカリ可溶性樹脂2の溶液を得た。(二重結合当量600、固形分40質量%、Mw23000)。
33gのメタクリル酸メチル、33gのスチレン、0.3gのトリシクロデカニルメタクリレート、34gのメタクリル酸、3gの2,2’-アゾビス(2-メチルブチロニトリル)および140gのPGMEAを重合容器中に仕込み、90℃にて2時間撹拌してから液温を100℃に上げ、さらに1時間反応させた。得られた反応溶液に20gのメタクリル酸グリシジル、1.2gのジメチルベンジルアミンおよび0.2gのp-メトキシフェノールを添加して90℃で4時間撹拌し、反応終了時に50gのPGMEAを添加して、アルカリ可溶性樹脂3の溶液を得た(二重結合当量2500、固形分35質量%、Mw8,000)。
(アルカリ可溶性樹脂4の合成)
33gのメタクリル酸メチル、33gのスチレン、0.2gのトリシクロデカニルメタクリレート、34gのメタクリル酸、3gの2,2’-アゾビス(2-メチルブチロニトリル)および140gのPGMEAを重合容器中に仕込み、90℃にて2時間撹拌してから液温を100℃に上げ、さらに1時間反応させた。得られた反応溶液に20gのメタクリル酸グリシジル、1.2gのジメチルベンジルアミンおよび0.2gのp-メトキシフェノールを添加して90℃で4時間撹拌し、反応終了時に100gのPGMEAを添加して、アルカリ可溶性樹脂4の溶液を得た(二重結合当量1900、固形分25質量%、Mw6,000)。
上記のように合成したアルカリ可溶性樹脂1 6.18g、重合性化合物(共栄社化学株式会社製“ペンタエリスリトールトリアクリレート)6.97g、光重合開始剤(ADEKA製 “アデカアークルズ”(登録商標)NCI-930)0.39g、紫外線吸収剤(BASF社製Tinuvin234)0.39g、重合禁止剤(DIC(株)製ターシャリブチルカテコール(以下TBC)) 0.01g、界面活性剤(ビックケミー製“BYK(登録商標)-333”)0.040gおよび溶剤としてプロピレングリコールモノメチルエーテル86.02gを混合して感光性樹脂組成物を作製した。
各成分の種類と配合量を表1、2に記載のとおりに変更したこと以外は実施例1と同様にして、感光性樹脂組成物を作製した。なお、表における各成分の含有量は全て質量部である。
各実施例および比較例において作製した感光性樹脂組成物を、硝酸、硫酸および過塩素酸を用いて加熱分解した後、希硝酸を用いて加温溶解して定容とした。この溶液について、ICP発光分光分析装置((株)日立ハイテクサイエンス製 PS3520VDDII)を用いてクロムや鉄などの金属含有量を測定し、感光性樹脂組成物中の固形分に対する質量%を算出した。結果を表1、2に記載した。
各実施例および比較例において作製した感光性樹脂組成物を、厚み0.5mmの4インチシリコンウェハー基板に塗布して塗布膜を形成し、90℃のホットプレートを用いて2分間プリベイクした。プリベイク後の塗布膜に露光量70mJ/cm2の条件で紫外線を照射して露光した後、0.0428%水酸化カリウム水溶液を用いて、40秒現像を行った。その後、230℃のオーブンを用いて30分間加熱することにより、膜厚9.0μmの樹脂膜(樹脂硬化膜)を形成した。薄膜応力想定装置(東朋テクノロジー(株)製FLX-2320-S)を用いて樹脂膜形成前後のシリコンウェハー基板のたわみ量の変化を測定し、膜応力値を算出した。結果を表1、2に記載した。
各実施例および比較例において作製した感光性樹脂組成物をガラス基板上に塗布して塗布膜を形成し、90℃のホットプレートを用いて2分間プリベイクした。プリベイク後の塗布膜に露光量70mJ/cm2の条件で紫外線を照射して露光した後、0.0428%水酸化カリウム水溶液を用いて、40秒現像を行った。230℃のオーブンを用いて30分間加熱することにより、膜厚9.0μmの樹脂膜を形成した。樹脂膜を高精細CF基板光学検査装置(LCF-100MA_SF;大塚電子(株)製)を用いて波長380~780nmにおける光の透過率を測定した。結果を表1、2に記載した。
各実施例および比較例において作製した感光性樹脂組成物を、減圧乾燥機に入れ2時間放置して溶剤を飛散させた後、(株)エー・アンド・デイ社製比重測定キッドAD-1653を用い、置換液として蒸留水を用いて、密度(ρ)を算出した。次いで、その感光性樹脂組成物を、直径2cm、高さ0.5mmのテフロン(登録商標)製容器に充填し、メタルハライドランプにて活性エネルギー線を照射(露光量:70mJ/cm2)して硬化させた。硬化後の樹脂硬化物を採取して、上記と同様にして密度(ρ)を算出した。得られた密度の各値から体積収縮率を算出し、その結果を表1、2に記載した。
各実施例および比較例において作製した感光性樹脂組成物を、ガラス基板に塗布して塗布膜を形成し、90℃のホットプレートを用いて2分間プリベイクした。プリベイク後の塗布膜に、それぞれHole径30μmおよび40μmのパターンを有するフォトマスクを介して、露光量70mJ/cm2の条件で紫外線を照射してマスク露光した後、0.0428%水酸化カリウム水溶液を用いて、40秒現像を行った。その後、230℃のオーブンを用いて30分間加熱することにより、膜厚9.0μmの樹脂膜を得た。
A:二重結合当量3200であり、トリシクロデカニルメタクリレート由来の単位を含むアルカリ可溶性樹脂1
B:二重結合当量600であり、トリシクロデカニルメタクリレート由来の単位を含まないアルカリ可溶性樹脂2
G:二重結合当量2500であり、トリシクロデカニルメタクリレート由来の単位を含むアルカリ可溶性樹脂3
H:二重結合当量1900であり、トリシクロデカニルメタクリレート由来の単位を含むアルカリ可溶性樹脂4
C:重合性化合物:ペンタエリスリトールトリアクリレート
D:フォトブリーチ系光重合開始剤:アデカアークルズ”(登録商標)NCI-930
E:非フォトブリーチ系光重合開始剤:アデカアークルズ”(登録商標)NCI-831
F:紫外線吸収剤:Tinuvin234
J:重合禁止剤:TBC
Z:界面活性剤:BYK(登録商標)-333
2 Holeの微細パターン
3 カラーフィルタ基板
Claims (13)
- (1)アルカリ可溶性樹脂、(2)重合性化合物および(3)光重合開始剤を含む感光性樹脂組成物であって、前記(1)アルカリ可溶性樹脂の二重結合当量が2000以上5000以下であり、前記感光性樹脂組成物から得られた膜厚9μmの樹脂膜の波長380~780nmの光に対する透過率が波長380~780nmの全範囲において90~100%である感光性樹脂組成物。
- 前記感光性樹脂組成物を露光量70mJ/cm2の条件で硬化させる前後の前記感光性樹脂組成物の体積収縮率が8%以下である請求項1に記載の感光性樹脂組成物。
- 前記(2)重合性化合物が、ヒドロキシ基を有する化合物からなる請求項1または請求項2に記載の感光性樹脂組成物。
- 前記(3)光重合開始剤が、フォトブリーチ系の光重合開始剤からなる請求項1~3のいずれかに記載の感光性樹脂組成物。
- さらに(4)紫外線吸収剤が含有され、その含有量が固形成分中0.05質量%以上8質量%以下である請求項1~4のいずれかに記載の感光性樹脂組成物。
- 前記感光性樹脂組成物を4インチシリコンウェハー基板に塗布して塗布膜を形成し、露光量70mJ/cm2の条件で紫外線を照射して露光した後、230℃のオーブンを用いて30分間加熱することにより、膜厚9μmの樹脂膜を形成した際の樹脂膜形成前後のシリコンウェハー基板のたわみ量の変化から算出された膜応力が5MPa以上30MPa以下である請求項1~5のいずれかに記載の感光性樹脂組成物。
- 前記基板上に前記樹脂膜を形成した際に、h2×(1/R1-1/R0)が150~900×1011(m)の範囲となる請求項6に記載の感光性樹脂組成物;
ここで、hは基板の厚さ(m)、R1は樹脂膜が形成されたときの基板の曲率半径(m)、R0は膜が形成されていないときの基板の曲率半径(m)を示す。 - 指紋センサーを備えた表示装置に用いる、請求項1~7のいずれかに記載の感光性樹脂組成物。
- 膜厚が4μm以上、15μm以下の指紋センサー用オーバーコート膜であって、オーバーコート膜の厚み9μmあたりの波長380~780nmの光に対する透過率が波長380~780nmの全範囲において90~100%である指紋センサー用オーバーコート膜。
- 基板上に膜厚9μmの樹脂膜を形成した際の樹脂膜形成前後の該基板のたわみ量の変化から算出された膜応力が5MPa以上30MPa以下である請求項9に記載の指紋センサー用オーバーコート膜。
- 基板上に形成した際に、h2×(1/R1-1/R0)が150~900×1011(m)の範囲となる請求項9または請求項10に記載の指紋センサー用オーバーコート膜;
ここで、hは基板の厚さ(m)、R1は樹脂膜が形成されたときの基板の曲率半径(m)、R0は膜が形成されていないときの基板の曲率半径(m)を示す。 - 請求項9ないし請求項11のいずれかに記載のオーバーコート膜を有する指紋センサー。
- 請求項12に記載の指紋センサーを備えた表示装置。
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WO2013084883A1 (ja) * | 2011-12-05 | 2013-06-13 | 日立化成株式会社 | タッチパネル用電極の保護膜の形成方法、感光性樹脂組成物及び感光性エレメント、並びに、タッチパネルの製造方法 |
JP2020166255A (ja) * | 2019-03-29 | 2020-10-08 | 日鉄ケミカル&マテリアル株式会社 | 硬化膜付き基板の製造方法、硬化膜付き基板、感光性樹脂組成物、感光性樹脂組成物を硬化してなる硬化膜および硬化膜または硬化膜付き基板を有する表示装置 |
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2021
- 2021-11-08 JP JP2021571561A patent/JPWO2022102559A1/ja active Pending
- 2021-11-08 CN CN202180073340.5A patent/CN116472495A/zh active Pending
- 2021-11-08 WO PCT/JP2021/040931 patent/WO2022102559A1/ja active Application Filing
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JP2000194825A (ja) * | 1998-12-25 | 2000-07-14 | Sony Corp | 指紋センサ―装置 |
JP2010026362A (ja) * | 2008-07-23 | 2010-02-04 | Toyo Ink Mfg Co Ltd | 半透過型液晶表示装置のカラ−フィルタ用感光性着色組成物、それを用いたカラ−フィルタの製造方法、該方法で製造されたカラ−フィルタ、及び半透過型液晶表示装置 |
JP2010122673A (ja) * | 2008-10-24 | 2010-06-03 | Jsr Corp | Ndフィルターおよびその製造方法 |
WO2013084883A1 (ja) * | 2011-12-05 | 2013-06-13 | 日立化成株式会社 | タッチパネル用電極の保護膜の形成方法、感光性樹脂組成物及び感光性エレメント、並びに、タッチパネルの製造方法 |
JP2020166255A (ja) * | 2019-03-29 | 2020-10-08 | 日鉄ケミカル&マテリアル株式会社 | 硬化膜付き基板の製造方法、硬化膜付き基板、感光性樹脂組成物、感光性樹脂組成物を硬化してなる硬化膜および硬化膜または硬化膜付き基板を有する表示装置 |
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