WO2016064159A2 - 디스플레이 필름 및 이를 포함하는 디스플레이 장치 - Google Patents
디스플레이 필름 및 이를 포함하는 디스플레이 장치 Download PDFInfo
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- WO2016064159A2 WO2016064159A2 PCT/KR2015/011054 KR2015011054W WO2016064159A2 WO 2016064159 A2 WO2016064159 A2 WO 2016064159A2 KR 2015011054 W KR2015011054 W KR 2015011054W WO 2016064159 A2 WO2016064159 A2 WO 2016064159A2
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- 230000001681 protective effect Effects 0.000 description 1
- JIYNFFGKZCOPKN-UHFFFAOYSA-N sbb061129 Chemical compound O=C1OC(=O)C2C1C1C=C(C)C2C1 JIYNFFGKZCOPKN-UHFFFAOYSA-N 0.000 description 1
- 238000007764 slot die coating Methods 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
- 239000004094 surface-active agent Substances 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
- 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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present invention relates to a display film and a display device including the same.
- the flexible display is not only thin and light, but also resistant to impact, can be bent or bent, and can be manufactured in various forms. In addition, ultimately, even if bent, it can be restored to its original shape and aims to be able to fold like paper.
- the window film at the outermost part of the display needs to have a high hardness because it is exposed to external impact or scratches.
- the silicone derivatives were coated or laminated on a flexible film to satisfy high hardness, but in this case, they did not satisfy enough flexibility to be used in the flexible display.
- a transparent plastic film containing silsesquioxane resin has been proposed as a film having a certain degree of flexibility (Japanese Patent Laid-Open No. 2007-176542), the flexibility is insufficient or the manufacturing method is difficult.
- the problem to be solved by the present invention is to provide a display film having excellent flexibility in both directions perpendicular to the surface of the film.
- Another problem to be solved by the present invention is to provide a display film with high hardness and high hardness.
- Another object of the present invention is to provide a display film excellent in flatness.
- the substrate layer And a coating layer formed on one surface of the substrate layer, wherein the display film includes a first surface on the substrate layer side and a second surface on the coating layer side, the first surface being measured in a concave shape.
- the first critical curvature radius is about 10 mm or less
- the second critical curvature radius measured in the direction in which the second surface is concave is about 5 mm or less.
- the pencil hardness of the display film may be about 5H or more.
- Another aspect of the invention relates to a display device comprising the display film.
- the display film according to the present invention exhibits excellent flexibility, in particular excellent flexibility in both directions perpendicular to the film plane and at the same time high hardness can provide advantageous properties for use as a window film of the display. Since it has excellent flexibility in both directions, it can be applied to the flexible display and contribute to the flexibility of the product. When coating the coating layer on the base layer, the flatness is excellent, which shows a favorable effect on the roll-to-roll process application.
- FIG. 1 is a cross-sectional view schematically showing the structure of a display film according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view schematically showing a method for measuring a first critical radius of curvature of a display film according to an embodiment of the present invention.
- FIG 3 is a cross-sectional view schematically showing a method of measuring a second critical radius of curvature of a display film according to an embodiment of the present invention.
- FIG. 4 is a cross-sectional view schematically showing the structure of a display device according to an embodiment of the present invention.
- FIG. 5 is a cross-sectional view schematically showing the structure of a display device according to another embodiment of the present invention.
- FIGS. 1 to 3 is a cross-sectional view schematically showing the structure of a display film according to an embodiment of the present invention.
- 2 and 3 are cross-sectional views schematically showing a method of measuring the first critical radius of curvature 210 and the second critical radius of curvature 310.
- Display film 100 is a substrate layer 110; And a coating layer 120 formed on one surface of the substrate layer, and the display film includes a first surface 111 on the substrate layer side and a second surface 121 on the coating layer side.
- the display film 100 has a concave shape of the first surface 111 based on a display film having a thickness of 100 ⁇ m, which is 50 ⁇ m of the base layer 110 and 50 ⁇ m of the coating layer 120 at 20-30 ° C.
- the first critical curvature radius 210 measured in the direction of the direction may be about 10 mm or less, specifically about 8 mm or less, and more specifically about 5 mm or less.
- the second critical curvature radius 310 measured in the direction in which the second surface 121 is concave may be about 5 mm or less, specifically about 4 mm or less, and more specifically about 3 mm or less.
- the first critical radius of curvature and the second critical radius of curvature may be applicable to the flexible display device because the display film exhibits sufficient flexibility within the above range.
- the first critical radius of curvature 210 and the second critical radius of curvature 310 are wound for 10 seconds by winding a test piece of a display film, which is a measurement target of the radius of curvature, in a cylindrical JIG (200, 300) for curvature test. And visually check the specimen for cracks, replace the diameter of the JIG with a smaller one, and proceed with the test.
- the minimum radius of curvature of the JIG, which does not cause cracks in the test piece, is the critical curvature radius.
- the first critical curvature radius 210 is wound so that the first surface 111 on the substrate layer side of the test piece touches the JIG 200.
- the second critical curvature radius 310 is measured by winding the second surface 121, which is the coating layer side of the test piece, to contact the JIG 300.
- the first critical curvature radius 210 may be about 10 mm or less, specifically about 8 mm or less, and more specifically about 5 mm or less.
- the second critical curvature radius 310 may be about 5 mm or less, specifically about 4 mm or less, and more specifically about 3 mm or less.
- the first critical radius of curvature and the second critical radius of curvature may be applicable to the flexible display device because the display film exhibits sufficient flexibility within the above range.
- the display film 100 may have a pencil hardness of about 5H or more, specifically about 7H or more, and more specifically about 8H or more.
- the pencil hardness may be, for example, about 5H to 10H, more specifically about 7H to 9H.
- the pencil hardness can be measured using a pencil hardness / scratch resistance (HEIDON, 14FW) for a display film of about 50 ⁇ m to about 150 ⁇ m thick. When the pencil hardness range, the display film may exhibit sufficient scratch resistance and hardness to be applied as a window film.
- HEIDON pencil hardness / scratch resistance
- the display film 100 according to the present embodiment may have a height of four corners measured by placing a film specimen having a size of 15 cm ⁇ 15 cm on a flat measuring table, respectively, in a range of about +10 mm to about ⁇ 10 mm. Within this range, the curl of the display film can be controlled to exhibit excellent flatness.
- the display film 100 according to the present embodiment has excellent flexibility in both directions perpendicular to the film plane and at the same time exhibits high hardness to meet scratch resistance, flexibility, and high strength, and also has excellent flatness to roll to roll. ) Can be applied to the process.
- the substrate layer 110 and the coating layer 120 of the display film 100 according to the present embodiment will be described in more detail.
- the base material layer 110 may use polyester resin, cycloolefin resin, or the like. Specifically, polyimide, modified polyimide, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, cycloolefin polymer, cycloolefin copolymer, polycarbonate, acrylic, vinyl fluoride, polyamide, polyarylate, cellulose, It may be a film such as polyether sulfone, norbornene-based resin, but is not limited thereto. For example, polyethylene terephthalate, polyimide, modified polyimide and the like can be used.
- the substrate layer 110 may have a thickness of 30 ⁇ m to 150 ⁇ m. It can exhibit excellent flexibility within the above range.
- the coating layer 120 is formed on one surface of the base layer 110 and may include a siloxane resin.
- the thickness of the coating layer 120 may be about 10 ⁇ m to about 100 ⁇ m, specifically about 20 ⁇ m to about 70 ⁇ m. Within this range can exhibit excellent flexibility and high hardness at the same time.
- the coating layer 120 may be made of a coating composition including a siloxane resin having an epoxy group, a reactive monomer, a polyfunctional acrylic oligomer, and an initiator.
- the siloxane resin having the epoxy group may be, for example, a siloxane resin having an alicyclic epoxy group. Since the siloxane resin having an alicyclic epoxy group has an alicyclic epoxy group as an ultraviolet ray or a thermosetting resin, the process is easy and the surface hardness is excellent. Specifically, the siloxane resin having an alicyclic epoxy group may be prepared through a condensation reaction between an alkoxy silane having an alicyclic epoxy group alone, or an alkoxy silane having an alicyclic epoxy group and a heterogeneous alkoxy silane having no alicyclic epoxy group. It is not limited to this.
- alkoxy silane having the alicyclic epoxy group examples include 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltriethoxysilane, and the like. It is not limited.
- the alkoxysilane which does not have the said alicyclic epoxy group is tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, dimethyldimethoxysilane, and dimethyl diethoxy.
- Silane phenyltrimethoxysilane, phenyltriethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, triphenylmethoxysilane, triphenylethoxysilane, ethyltriethoxysilane, propylethyltrimeth Methoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltripropoxysilane, N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltrimethoxysilane, N- (3- Acryloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltripropoxysilane, 3-acryloxypropylmethylbis (Trimethoxy) silane, 3-acryloxypropyltri Methoxysilane, 3-acryloxypropyltrie
- the siloxane resin having an alicyclic epoxy group may have a weight average molecular weight (Mw) of about 1,000 g / mol to about 100,000 g / mol, for example, about 2,000 g / mol to about 15,000 g / mol. Excellent flexibility can be given within the above range.
- the siloxane resin having the cycloaliphatic epoxy group may be included in an amount of about 30% by weight to about 90% by weight based on the total weight of the coating composition, specifically about 50% by weight to about 85% by weight, more specifically about 65 to about It may be included in 80% by weight. It may have a viscosity suitable for coating within the above range.
- the polyfunctional acrylic oligomer may use an oligomer having 2 to 6 acrylate groups, specifically 2 to 5, for example 3, in the molecule. Since the polyfunctional acrylic oligomer is included, it is possible to control the curl when coating the coating composition on the substrate layer, and has excellent optical properties and hardness.
- the multifunctional acrylic oligomer may be urethane acrylate, polyester acrylate, epoxy acrylate, silicone acrylate, acrylic acrylate, melamine acrylate oligomer, and the like, but one or a mixture of two or more thereof may be used, but is not limited thereto. It doesn't happen.
- "Oligomer” herein means that the number of repeating units is at least two and not a polymer.
- the multifunctional acrylic oligomer may be included in an amount of about 2 wt% to about 30 wt%, and specifically, about 3 wt% to about 20 wt%, based on the total weight of the coating composition. It is possible to impart flexibility to the coating layer while expressing high hardness characteristics within the above range.
- the polyfunctional acrylic oligomer may have a weight average molecular weight (Mw) of about 200 g / mol to about 2000 g / mol. Within the above range, it is possible to simultaneously provide flexibility to the high hardness property and the coating layer.
- the reactive monomer may include an acid anhydride monomer, a monomer having an epoxy group, a monomer having an oxetane group, or a mixture thereof.
- the acid anhydride monomers may include, but are not limited to, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, nadicmethyl anhydride, chlorendic anhydride, pyromellitic anhydride, and the like.
- Monomers having the epoxy group include 4-vinylcyclohexene dioxide, cyclohexene vinyl monooxide, (3,4-epoxycyclohexyl) methyl 3,4-epoxycyclohexylcarboxylate, 3,4-epoxycyclohexylmethyl methacryl Latex, bis (3,4-epoxycyclohexylmethyl) adipate, 3,4-epoxycyclohexanecarboxylate, and 2- (3,4-epoxycyclohexyl) -1,3-dioxolane, and the like. This is not restrictive.
- the monomer having an oxetane group is 3-methyloxetane, 2-methyloxetane, 3-oxetanol, 2-methylene oxetane, 3,3-oxetane dimethane thiol, 4- (3-methyloxetane- 3-yl) benzonitrile, N- (2,2-dimethylpropyl) -3-methyl-3-oxetanemethaneamine, N- (1,2-dimethylbutyl) -3-methyl-3-oxetanemethane Amine, (3-ethyloxetan-3-yl) methyl methacrylate, and 4-[(3-ethyloxetan-3-yl) methoxy] butan-1-ol, 3-ethyl-3-hydroxy Methyloxetane, 2-ethylhexyloxetane, xylene bis oxetane, and 3- [ethyl-3 [[
- the reactive monomer may include about 1 to about 40 parts by weight, specifically about 5 to about 20 parts by weight, based on 100 parts by weight of the siloxane resin having the epoxy group.
- the reactive monomer may be included in about 1 to about 20% by weight, specifically about 5 to about 15% by weight, based on the total weight of the coating composition. Within this range the viscosity of the coating composition is controlled and easy to process.
- the coating composition may have a weight ratio of the siloxane resin having an epoxy group and the polyfunctional acrylic oligomer to about 2: 1 to 100: 1, specifically about 2: 1 to 70: 1, more specifically about 2: 1 to 50: 1. Can be. Within this range, the balance of hardness and flexibility of the display film is excellent.
- the coating composition may have a weight ratio of the polyfunctional acrylic oligomer and the reactive monomer of about 1: 0.1 to 1:10, specifically about 1: 0.1 to 1: 7, and more specifically 1: 0.1 to 1: 5. Within this range, the balance of hardness and flexibility of the display film is excellent.
- the initiator may use a conventional initiator, for example, may include, but is not limited to, one or more of a photocuring initiator, a thermosetting initiator, a cationic initiator.
- a photocuring initiator and the thermosetting initiator may be used, and examples of the photocuring initiator include triazine, acetophenone, benzophenone, thioxanthone, benzoin, phosphorus and oxime.
- examples of the photocationic initiator include, but are not limited to, onium salts, sulfonium salts, N-containing salts, and the like.
- the initiator may be included in about 0.1% to about 10% by weight, specifically about 1 to about 5% by weight relative to the total weight of the coating composition. Within this range, the composition may be sufficiently cured to form a coating layer, and the unreacted residual amount of initiator may not be left and thus transparency may not be reduced.
- the coating composition may further include a solvent for ease of coating in addition to the above components.
- a solvent for ease of coating for example, methyl ethyl ketone, propylene glycol monomethyl ether acetate, and the like can be used, but is not limited thereto.
- the coating composition includes, in addition to the above-described components, a solvent, and an additive, as necessary, a photosensitizer, a photosensitizer, a polymerization inhibitor, a leveling agent, a wettability improving agent, a surfactant, a plasticizer, an ultraviolet absorber, an antioxidant, an inorganic filler, and the like. can do.
- a photosensitizer a photosensitizer
- a polymerization inhibitor e.g., ethylene glycol dimethoxysulfate
- a leveling agent e.g., a wettability improving agent
- surfactant e.g., sodium bicarbonate
- plasticizer e.g., sodium bicarbonate
- ultraviolet absorber e.g., sodium bicarbonate
- an antioxidant e.g., sodium bicarbonate
- an inorganic filler e.g., sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate
- the coating composition according to another embodiment of the present invention may include a siloxane resin having a cycloaliphatic epoxy group, a reactive monomer, a polyfunctional acrylic oligomer, a polyfunctional acrylic monomer, and an initiator. Except for further comprising a polyfunctional acrylic monomer, as described with respect to the coating composition according to an embodiment of the present invention described above will be described below with a focus on the polyfunctional acrylic monomer.
- Polyfunctional acrylic monomers include dipentaerythritol hexa acrylate (DPHA), pentaerythritol triacrylate (PETA), tri (2-hydroxyethyl) isocyanate triacrylate (THEIC), trimethylpropane triacrylate (TMPTA), hexanediol diacrylate (HDDA), dicyclodecane dimethanol diacrylate (DCPA), and the like may be used, but is not limited thereto.
- the multifunctional acrylic monomer may be included in about 0.5 to about 20% by weight based on the total weight of the coating composition, specifically about 5% to about 10% by weight. It is possible to give flexibility to the coating layer at the same time with the development of high hardness within the above range.
- Method for producing a film of the window according to an embodiment of the present invention can be prepared by a conventional method by curing the coating composition according to the embodiments of the present invention on a substrate layer.
- the coating solution prepared by diluting the coating composition in a solvent may be coated on the base layer 110 and cured by UV irradiation.
- the coating method is not particularly limited, and may be, for example, bar coating, slot die coating, gravure coating, spin coating, roll coating, dip coating, flow coating, spray coating, or the like.
- Curing may be performed by exposing ultraviolet light having a wavelength of 400 nm or less to about 10 mJ / cm 2 to about 2000 mJ / cm 2.
- the coating may further include drying before curing, and drying may be performed at about 60 ° C. to about 120 ° C. for about 5 minutes to about 1 hour to increase uniformity of the coating layer.
- the display film according to the embodiments of the present invention may be used as a window film that is an outer layer of the display, and further include a conventional antifouling layer, antireflection layer, etc. on the coating layer to further improve antifouling and antireflection effects. Can be.
- the display device according to an embodiment of the present invention may include a display film according to embodiments of the present invention.
- 4 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.
- the display apparatus 500 includes a display element 400; And a display film, wherein the display film is formed on the display element 400.
- the display film is formed on the display element 400 in a direction in which the coating layer 120 becomes an outer layer, and may be a display film according to the embodiments of the present invention described above.
- the flexible display device may include a display film according to embodiments of the present invention.
- the flexible display device according to the present embodiment may include a substrate, a device member formed on the substrate, and a display film according to embodiments of the present invention as a window film on the device member, wherein the device member is organic light emitting. Elements, liquid crystals, and the like.
- the flexible display apparatus 600 is formed on the substrate 610, the device member 620 formed on the substrate 610, and the device member 620.
- the touch screen panel 640, the polarizing plate 650 formed on the touch screen panel 640, may include a window film 670 formed on the polarizing plate 650, the present invention as a window film 670 Display films according to embodiments of can be used.
- the substrate 610 may include a transparent material having flexible properties, and may include, for example, polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polycarbonate (PC) resin, and polyether sulfone (Polymer resins such as poly (meth) acrylate resins such as PES) resins, polyimide (PI) resins, polyarylate (PAR) resins, cyclic olefin copolymer (COC) resins, and polymethylmethacrylate (PMMA)
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PC polycarbonate
- Polymer resins such as poly (meth) acrylate resins such as PES) resins, polyimide (PI) resins, polyarylate (PAR) resins, cyclic olefin copolymer (COC) resins, and polymethylmethacrylate (PMMA)
- PES poly (meth) acrylate resin
- the device member 620 may use a display device having flexibility as a display device such as an organic light emitting device or a liquid crystal.
- the device member 620 may be a TFT-LCD or a TFT-OLED.
- the organic light emitting device may include a first electrode, a second electrode, an organic light emitting layer formed between the first electrode and the second electrode, the organic light emitting layer is a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer sequentially It may be stacked as, but is not limited thereto.
- the touch screen panel 640 detects and transmits a signal due to contact when a finger or a pen touches a specific position of the display.
- the touch screen panel 640 detects a reduced pressure or an electrical signal.
- the electrode for sensing an electrical signal may be one having flexibility as a conductive material, and may include, for example, a conductive polymer, carbon nanotubes, graphene, metal nanowires, or a combination thereof.
- the polarizer 650 may serve to polarize external light or internal light by imparting polarization performance to a display, and may include a polarizer and a protective film.
- the pressure-sensitive adhesive layers 630 and 660 are interposed between the substrate 610 and the device member 620 and between the device member 620 and the touch screen panel 640 so that the substrate 610 and the device member 620 are interposed therebetween.
- a device adhesive 620 and the touch screen panel 640, and a transparent adhesive commonly used in the adhesive field for a display may be used.
- a transparent adhesive film can be used.
- Reactive monomer Monomer CY 179 having an epoxy group (Ciba-Geigy)
- Multifunctional acrylic oligomer trifunctional acrylic oligomer (SR965, Sartomer)
- Initiator Irgacure 250 (iodine salt system, Basf company), CPI-100P (sulfonium system, AN-APRO company)
- Coating Composition 2 13.5 g of reactive monomer CY 179 (Ciba-Geigy) and 81.5 g of Epoxy Hybrimer (Solip), a siloxane resin having an alicyclic epoxy group, 5 g of trifunctional acrylate oligomer (SR965, Sartomer), initiator (Irgacure 250, Basf) 3g) was mixed to prepare Coating Composition 2.
- Coating Composition 4 11.5 g of reactive monomer CY 179 (Ciba-Geigy) and 78.6 g of Epoxy Hybrimer (Solip), a siloxane resin having an alicyclic epoxy group, 20 g of trifunctional acrylate oligomer (SR965, Sartomer), initiator (Irgacure 250, Basf) 3g) was mixed to prepare Coating Composition 4.
- Coating composition 5 was prepared by mixing 3 g of an initiator (Irgacure 250, Basf).
- Coating composition 6 was prepared by mixing 14.3 g of reactive monomer CY 179 (Ciba-Geigy) and 86 g of Epoxy Hybrimer (Solip), a siloxane resin having an alicyclic epoxy group, and 4 g of sulfonium-based initiator (CPI-100P, SAN-APRO). Prepared.
- the display film including the coating film of 50 micrometers in thickness was produced by exposing to ultraviolet-ray.
- a display film was manufactured in the same manner as in Example 1, except that coating compositions 2 to 8 were used, respectively, as shown in Table 1 instead of coating composition 1.
- the test piece (3 cm * 15 cm) of the display film is wound around the cylindrical JIG for curvature test and held for 10 seconds or more, and visually confirms that no crack is generated in the test piece.
- the test was repeated while replacing the diameter of the JIG with a small one, and the critical radius of curvature was set to the minimum radius of the JIG where cracks did not occur in the measured specimens.
- the first critical radius of curvature is measured by winding the substrate layer surface of the test piece to JIG
- the second critical radius of curvature is measured by winding the surface of the coating layer of the test piece to JIG.
- the minimum radius that can be measured according to the above method is 2 mm, and the resultant is described as 2 mm or less when the film is not damaged even if the curved surface is less than 2 mm by folding the film in half.
- Pencil hardness was measured using a Shinto scientific Heidon surface tester (14 FW).
- the pencil is Mitsubishi pencil, and the tip of the pencil is flat with # 400 sandpaper.
- the pencil and the test piece (3cm * 15cm) of the display film are installed at an angle of 45 °, and the weight of 1kg is moved up by 10mm. Repeat the measurement five times with a pencil of the same hardness, and mark the largest pencil hardness among the hardnesses without scratches as the surface hardness (pencil hardness) of the specimen.
- the film was placed on a flat measuring table with a 15 cm * 15 cm sized film specimen to measure the height of the four corners.
- the height of all four corners is 10 mm or less
- the case where the height of one or more of the four corners is 10 mm to 15 mm, and the case where one or more of the four corners exceed 15 mm are indicated by X.
- the transmittance is measured using an NDA2000 (Hazemeter). The average value is measured by measuring 3 points in the same sample.
- the display film of the embodiment has a high hardness, but the first critical radius of curvature is less than 10mm, the second critical radius of curvature is 5mm or less, excellent flexibility in both directions, excellent transparency and flatness Can be.
- the first critical curvature radius is very large outside the scope of the present application, the flatness is poor, and Comparative Example 3 is not suitable for being used as a display film due to its low hardness.
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Abstract
Description
단위(중량%) | 실시예 | 비교예 | |||||||
1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | ||
코팅조성물 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
코팅조성물성분 | (A) | 80.8 | 79.1 | 74.9 | 69.5 | 75.3 | 82.5 | 82.4 | 50 |
(B) | 13.4 | 13.1 | 12.5 | 10.2 | 5.4 | 13.7 | 14.3 | 12.3 | |
(C) | 2.9 | 4.9 | 9.7 | 17.7 | 10.8 | 0 | 0.4 | 35 | |
(D) | 0 | 0 | 0 | 0 | 5.4 | 0 | 0 | 0 | |
(E) | 2.9 | 2.9 | 2.9 | 2.6 | 3.2 | 3.8 | 2.9 | 2.7 | |
제1임계곡률반경(mm) | 8 | 5 | 4 | 4 | 5 | 30 | 26 | 6 | |
제2임계곡률반경(mm) | 2mm이하 | 2mm이하 | 2mm이하 | 2mm이하 | 2mm이하 | 2mm이하 | 2mm이하 | 2mm이하 | |
연필경도(H) | 9 | 6 | 7 | 7 | 8 | 8 | 9 | 2 | |
투명성(투과율%) | 89.56 | 89.7 | 89.26 | 89.78 | 89.29 | 89.24 | 89.43 | 89.15 | |
평탄성 | ○ | ○ | ○ | ○ | ○ | × | × | ○ |
Claims (12)
- 기재층; 및 상기 기재층의 일면에 형성된 코팅층을 포함하는 디스플레이 필름으로서,상기 코팅층은 실록산 수지를 포함하고,상기 디스플레이 필름은 기재층 측인 제1면 및 코팅층측인 제2면을 포함하며, 기재층 50㎛ 및 코팅층 50㎛인 두께 100㎛의 디스플레이 필름을 상기 제1면이 오목형상이 되는 방향으로 측정한 제1 임계 곡률반경이 약 10mm이하이고, 상기 제2면이 오목형상이 되는 방향으로 측정한 제2 임계 곡률반경이 약 5mm 이하이고,연필경도가 약 5H 이상인 디스플레이 필름.
- 제1항에 있어서,상기 코팅층은 에폭시기를 가지는 실록산 수지;산무수물 모노머, 에폭시기를 갖는 모노머 및 옥세탄기를 갖는 모노머 중에서 선택된 1종 이상의 반응성 모노머;다관능 아크릴계 올리고머; 및개시제;를 포함하는 코팅 조성물로부터 형성되는 디스플레이 필름.
- 제2항에 있어서,상기 다관능 아크릴계 올리고머는 분자 내에 아크릴레이트기를 2 내지 6개를 가지는 다관능 아크릴계 올리고머인 디스플레이 필름.
- 제2항에 있어서,상기 다관능 아크릴계 올리고머는 우레탄 아크릴레이트, 폴리에스테르 아크릴레이트, 에폭시 아크릴레이트, 실리콘 아크릴레이트, 아크릴릭 아크릴레이트 및 멜라민 아크릴레이트 올리고머 중 1종 이상인 디스플레이 필름.
- 제2항에 있어서,상기 코팅 조성물은 다관능 아크릴계 모노머를 더 포함하는 디스플레이 필름.
- 제2항에 있어서,코팅 조성물 총 중량에 대하여 에폭시기를 가지는 실록산 수지 약 30중량% 내지 약 90중량% 및 다관능 아크릴계 올리고머 약 2중량% 내지 약 30중량%를 포함하는 디스플레이 필름.
- 제2항에 있어서,상기 코팅 조성물은 상기 반응성 모노머를 상기 에폭시기를 가지는 실록산 수지 100 중량부에 대해 약 1 내지 약 40 중량부 포함하는 디스플레이 필름.
- 제1항에 있어서,상기 디스플레이 필름은 제1 임계 곡률반경이 약 5mm 이하이고, 연필경도가 약 8H 이상인 디스플레이 필름.
- 제1항에 있어서,상기 기재층은 폴리이미드계 수지인 디스플레이 필름.
- 제1항에 있어서,상기 코팅층은 두께가 약 10㎛ 내지 약 100㎛인 디스플레이 필름.
- 제1항에 있어서,상기 기재층은 두께가 약 30㎛ 내지 약 150㎛인 디스플레이 필름.
- 디스플레이 소자; 및 상기 디스플레이 소자 상부에 제1항 내지 제11항 중 어느 한 항의 디스플레이 필름을 포함하는 디스플레이 장치.
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CN201580056705.8A CN107073882B (zh) | 2014-10-20 | 2015-10-19 | 显示器膜和包含其的显示器装置 |
EP15852543.6A EP3210773A4 (en) | 2014-10-20 | 2015-10-19 | Display film and display device comprising same |
US15/520,050 US10797261B2 (en) | 2014-10-20 | 2015-10-19 | Display film and display device comprising same |
JP2017521585A JP2018501976A (ja) | 2014-10-20 | 2015-10-19 | ディスプレイフィルムおよびこれを含むディスプレイ装置 |
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KR1020140141648A KR101748009B1 (ko) | 2014-10-20 | 2014-10-20 | 디스플레이 필름 및 이를 포함하는 디스플레이 장치 |
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WO2017138416A1 (ja) * | 2016-02-08 | 2017-08-17 | シャープ株式会社 | 有機el表示装置 |
JP6695727B2 (ja) * | 2016-04-08 | 2020-05-20 | 株式会社ジャパンディスプレイ | 表示装置 |
KR102012543B1 (ko) * | 2016-05-11 | 2019-08-20 | 삼성에스디아이 주식회사 | 윈도우 필름 및 이를 포함하는 디스플레이 장치 |
TWI610991B (zh) * | 2016-08-26 | 2018-01-11 | 長興材料工業股份有限公司 | 可熱聚合的組成物以及由此形成之組成液 |
KR102040299B1 (ko) * | 2017-02-21 | 2019-11-04 | 삼성에스디아이 주식회사 | 윈도우 필름용 보호 필름, 이를 포함하는 광학 부재 및 이를 포함하는 디스플레이 장치 |
KR101951111B1 (ko) | 2017-07-05 | 2019-02-22 | 희성전자 주식회사 | 플렉시블 디스플레이 장치용 기판 및 이를 포함하는 플렉시블 디스플레이 장치 |
KR102459607B1 (ko) | 2017-11-08 | 2022-10-31 | 삼성디스플레이 주식회사 | 표시 장치용 윈도우, 그 윈도우의 제조 방법 및 그 윈도우를 포함하는 표시 장치 |
KR20190063486A (ko) | 2017-11-29 | 2019-06-10 | 희성전자 주식회사 | 플렉시블 디스플레이 장치용 기판 및 이를 포함하는 플렉시블 디스플레이 장치 |
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- 2014-10-20 KR KR1020140141648A patent/KR101748009B1/ko active IP Right Grant
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- 2015-10-19 JP JP2017521585A patent/JP2018501976A/ja active Pending
- 2015-10-19 WO PCT/KR2015/011054 patent/WO2016064159A2/ko active Application Filing
- 2015-10-19 EP EP15852543.6A patent/EP3210773A4/en not_active Withdrawn
- 2015-10-19 CN CN201580056705.8A patent/CN107073882B/zh active Active
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JP2018013785A (ja) * | 2016-07-22 | 2018-01-25 | ドンウ ファインケム カンパニー リミテッド | ハードコーティングフィルム及びこれを備えたタッチセンサーを含むフレキシブルディスプレイウィンドウ |
TWI777965B (zh) * | 2016-07-22 | 2022-09-21 | 南韓商東友精細化工有限公司 | 硬塗膜及使用該硬塗膜之包括觸控感測器之可撓性顯示窗 |
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EP3210773A2 (en) | 2017-08-30 |
WO2016064159A3 (ko) | 2017-04-27 |
US10797261B2 (en) | 2020-10-06 |
CN107073882B (zh) | 2019-06-04 |
EP3210773A4 (en) | 2018-05-23 |
KR20160046949A (ko) | 2016-05-02 |
JP2018501976A (ja) | 2018-01-25 |
US20170324059A1 (en) | 2017-11-09 |
KR101748009B1 (ko) | 2017-06-16 |
CN107073882A (zh) | 2017-08-18 |
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