WO2017142174A1 - Composition pour film de fenêtre et film de fenêtre flexible formé à partir de celle-ci - Google Patents

Composition pour film de fenêtre et film de fenêtre flexible formé à partir de celle-ci Download PDF

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Publication number
WO2017142174A1
WO2017142174A1 PCT/KR2016/014146 KR2016014146W WO2017142174A1 WO 2017142174 A1 WO2017142174 A1 WO 2017142174A1 KR 2016014146 W KR2016014146 W KR 2016014146W WO 2017142174 A1 WO2017142174 A1 WO 2017142174A1
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group
window film
formula
composition
silicone resin
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PCT/KR2016/014146
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English (en)
Korean (ko)
Inventor
최진희
한동일
강경구
김주희
우창수
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삼성에스디아이 주식회사
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Priority claimed from KR1020160071345A external-priority patent/KR101963003B1/ko
Application filed by 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Publication of WO2017142174A1 publication Critical patent/WO2017142174A1/fr

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    • 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
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements

Definitions

  • the present invention relates to a composition for a window film and a flexible window film formed therefrom.
  • a flexible display device having a flexibility to be folded and unfolded while replacing a glass substrate or a high hardness substrate with a film has been developed.
  • Flexible display devices are thin, light, impact-resistant, and foldable. Since the window film is located at the outermost side of the display device, it should have good flexibility and hardness.
  • the window film is prepared by applying a coating solution on a substrate layer, which may not have a good appearance if the coating solution is not uniformly applied, resulting in distortion on the display, and high reflectivity, resulting in an unclear or glare on the display. Can give
  • the problem to be solved by the present invention is to provide a composition for a window film that can implement a window film with excellent appearance and low reflectance.
  • Another object of the present invention is to provide a composition for a window film that can implement a flexible window film with excellent hardness and flexibility.
  • Another object of the present invention is to provide a composition for a window film that can implement a window film having an effect of improving the screen quality.
  • Another problem to be solved by the present invention is to provide a flexible window film having excellent appearance, low reflectance and excellent hardness and flexibility.
  • composition for a window film of the present invention may include a first fluorine-containing silicone resin of Formula 1, a second silicone resin having an epoxy group or an epoxy group-containing functional group, and an initiator:
  • the flexible window film of the present invention includes a base layer and a coating layer formed on the base layer, wherein the flexible window film may have a RIQ of about 85 or more, a pencil hardness of about 4H or more, and a radius of curvature of about 5.0 mm or less. .
  • the present invention provides a composition for a window film that can implement a window film having excellent appearance and low reflectance.
  • the present invention provides a composition for a window film that can implement a flexible window film having excellent hardness and flexibility.
  • the present invention provides a composition for a window film that can implement a window film having an effect of improving screen quality.
  • the present invention provides a flexible window film having excellent appearance, low reflectance and excellent hardness and flexibility.
  • FIG. 1 is a cross-sectional view of a flexible window film according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a flexible window film according to another embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a flexible display device according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view according to an exemplary embodiment of the display unit of FIG. 3.
  • FIG. 5 is a cross-sectional view of a flexible display device according to another exemplary embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a flexible display device according to still another embodiment of the present invention.
  • RIQ Reflected Image Quality
  • epoxy group is a glycidyl group, glycidoxy group or epoxidized C4 to C20 cycloalkyl group
  • epoxy group containing functional group is C1 to C20 alkyl group having an epoxy group or C5 to C20 cycloalkyl group having an epoxy group. to be.
  • halogen refers to fluorine, chlorine, bromine or iodine
  • (meth) acryl refers to acrylic and / or methacryl
  • substituted means one or more of the functional groups, unless specifically noted.
  • Hydrogen atom is hydroxyl group, unsubstituted C1 to C10 alkyl group, C1 to C10 alkoxy group, C3 to C10 cycloalkyl group, unsubstituted C6 to C20 aryl group, C7 to C20 arylalkyl group, C1 to C10 alkyl group It means substituted with a substituted C6 to C20 aryl group, or C1 to C10 alkoxy group substituted with a C1 to C10 alkyl group.
  • Ec is 2- (3,4-epoxycyclohexyl) ethyl group
  • Gp is 3-glycidoxypropyl group
  • Me is methyl group
  • Fd is 1H, 1H, 2H, 2H- Perfluorodecyl group
  • Fo is a 1H, 1H, 2H, 2H- perfluorooctyl group.
  • the composition for a window film according to an embodiment of the present invention may include a first fluorine-containing silicone resin, a second silicone resin, and an initiator.
  • the composition for a window film according to the present embodiment includes the first fluorine-containing silicone resin to improve the appearance of the window film, to reduce diffuse reflection, to increase the transparency of the window film, and to improve the coating property of the composition for the window film. Can be.
  • the composition for a window film according to the present embodiment may implement a flexible window film by improving the hardness and flexibility of the window film by including the first fluorine-containing silicone resin and the second silicon resin.
  • the first fluorine-containing silicone resin and the second silicone resin are different from each other, and may be included in the composition for a window film, alone or in combination of two or more thereof.
  • the first fluorine-containing silicone resin may be represented by Formula 1 below:
  • R is an epoxy group, an epoxy group-containing functional group, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C5 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C20 aryl group,
  • X is a substituted or unsubstituted C1 to C30 alkyl group containing at least one fluorine, a substituted or unsubstituted C5 to C20 cycloalkyl group containing at least one fluorine, or a substituted or unsubstituted containing at least one fluorine Substituted C6 to C20 aryl group,
  • a is an integer of 0 to 3
  • b is an integer of 1 to 3
  • x + y 1).
  • R is an epoxy group or an epoxy group-containing functional group, and C1 to C20 alkyl group having a epoxidized C4 to C20 cycloalkyl group, C1 to C20 alkyl group having a glycidoxy group, or C1 to C10 alkyl group, more specifically It may be an epoxycyclohexylethyl group, a glycidoxy propyl group, a methyl group, or an ethyl group.
  • X represents C1 to C10 fluoroalkyl group, C1 to C10 perfluoroalkyl group, C1 to C10 alkyl group having C1 to C10 fluoroalkyl group, or C1 to C10 having C1 to C10 perfluoroalkyl group It may be an alkyl group of C10. More specifically, X is a 1H, 1H, 2H, 2H- perfluorodecyl group, 1H, 1H, 2H, 2H- perfluorooctyl group, or 1H, 1H, 2H, 2H-perfluorohexyl group, etc. Can be.
  • the first fluorine-containing silicone resin may be represented by the following Formula 1-1, Formula 1-2, or Formula 1-3:
  • first fluorine-containing silicone resin may be represented by the following Chemical Formulas 1-1-1 to 1-1-10:
  • the first fluorine-containing silicone resin has a fluorine content of about 0.1% to about 50% by weight, specifically about 0.2% to about 30% by weight, more specifically about 0.5% to about 20% by weight, even more specifically about And from about 1% to about 10% by weight. In the above range, the appearance of the window film may be improved and transparency may be good.
  • the first fluorine-containing silicone resin may have a weight average molecular weight of about 2,000 to about 20,000, specifically about 4,000 to about 10,000, more specifically about 4,500 to about 6,000. It is possible to improve the appearance of the window film in the above range and to increase the transparency.
  • the first fluorine-containing silicone resin has a polydispersity (PDI) of about 1.0 to about 3.0, specifically about 1.5 to about 2.5, epoxy equivalent weight of about 0.1 mol / 100 g to about 1.0 mol / 100 g, specifically about 0.3 mol / 100 g To about 0.8 mol / 100 g.
  • PDI polydispersity
  • the first fluorine-containing silicone resin is about 0.1 wt% to about 50 wt%, specifically about 0.2 wt% to about 30 wt%, more specifically about 0.5 wt% of the total of the first fluorine-containing silicone resin and the second silicon resin. To about 20% by weight. In the above range, the appearance of the window film can be improved and the transparency can be good.
  • the second silicone resin is a binder for forming the window film, and may improve the hardness and flexibility of the window film, and may be represented by the following Chemical Formula 2 as a non-fluorine-based silicone resin containing no fluorine:
  • R 1 is an epoxy group or an epoxy group-containing functional group
  • R 2 and R 3 are each independently hydrogen, a crosslinkable functional group, an unsubstituted or substituted C1 to C20 alkyl group, or an unsubstituted or substituted C5 to C20 cycloalkyl group,
  • R 4 , R 5 and R 6 are each independently hydrogen, a crosslinkable functional group, unsubstituted or substituted C1 to C20 alkyl group, unsubstituted or substituted C5 to C20 cycloalkyl group, or unsubstituted or substituted C6 to C30 aryl group,
  • R 1 may be a C1 to C20 alkyl group having an epoxidized C4 to C20 cycloalkyl group, or a C1 to C20 alkyl group having a glycidoxy group, more specifically an epoxycyclohexylethyl group, or a glycidoxypropyl group.
  • R 2 and R 3 may each independently be a C1 to C20 alkyl group, a C1 to C10 alkyl group, more particularly an epoxycyclohexylethyl group or a methyl group having a C4 to C20 cycloalkyl group.
  • a crosslinkable functional group refers to an epoxy group, an epoxy group-containing functional group, an oxetanyl group, or an oxetanyl group-containing functional group.
  • the second silicone resins of the following Chemical Formulas 2-1 and 2-2 are more preferable for securing the appearance, hardness and the like of the window film.
  • the second silicone resin may be represented by the following Chemical Formulas 2-1, 2-2:
  • R 1a may be a C1 to C20 alkyl group having an epoxidized C4 to C20 cycloalkyl group
  • R 1b may be a C1 to C20 having a glycidyl group or a glycidoxy group. It may be an alkyl group.
  • the second silicone resin may be represented by the following Chemical Formula 2-1-1, 2-1-2:
  • the second silicone resin may have a weight average molecular weight of about 2,000 to about 20,000, specifically about 4,000 to about 10,000, more specifically about 4,500 to about 7,000. In the above range may be effective to support the coating layer of the window film in the above range.
  • the second silicone resin has a polydispersity (PDI) of about 1.0 to about 3.0, specifically about 1.5 to about 2.5, epoxy equivalent weight of about 0.1 mol / 100 g to about 1.0 mol / 100 g, specifically about 0.3 mol / 100 g to about It may be 0.8 mol / 100 g.
  • PDI polydispersity
  • epoxy equivalent weight epoxy equivalent weight of about 0.1 mol / 100 g to about 1.0 mol / 100 g, specifically about 0.3 mol / 100 g to about It may be 0.8 mol / 100 g.
  • the coating property of the composition is good, there may be a stable coating properties.
  • the second silicon resin is about 50% to about 99.9% by weight, specifically about 70% to about 99.8% by weight, more specifically about 80% to about 80% by weight of the sum of the first fluorine-containing silicone resin and the second silicon resin. It may be included in 99.5% by weight. In the above range, there is an effect of improving the flexibility and hardness of the window film, it is possible to see the appearance improvement effect by increasing the RIQ of the window film.
  • the initiator is used to cure the first fluorine-containing silicone resin and the second silicone resin, and one or more of a photocationic initiator and an optical radical initiator may be used, and may be used alone or in combination of two or more thereof.
  • Photocationic initiators can be used that is commonly known to those skilled in the art, may be used onium salt containing a cation and an anion.
  • the cation is diphenyl iodonium, 4-methoxydiphenyl iodonium, bis (4-methylphenyl) iodonium, bis (4-tert-butylphenyl) iodonium, bis (dodecylphenyl) iodonium, (4 Triarylsulfonium and bis [4, such as diaryl iodonium, such as -methylphenyl) [4- (2-methylpropyl) phenyl] iodonium, triphenylsulfonium, and diphenyl-4-thiophenoxyphenylsulfonium; -(Diphenylsulfonio) phenyl] sulfide, and the like, and the anion is hexafluorophosphate, tetrafluoroborate, hexafluoroantimonate, hexafluoroarsenate, hexachloroantimonate, or the like, and
  • the initiator may be included in an amount of about 0.1 parts by weight to about 10 parts by weight, specifically about 0.5 parts by weight to about 5 parts by weight, based on 100 parts by weight of the total of the first fluorine-containing silicone resin and the second silicon resin. In this range, the silicone resin can be sufficiently cured and the residual amount of initiator remains to prevent the optical properties of the window film (such as transmittance, color and light reliability) from being lowered.
  • composition for a window film according to the present embodiment may further include nanoparticles.
  • Nanoparticles can further increase the hardness of the window film.
  • Nanoparticles may include, but are not limited to, one or more of silica, aluminum oxide, zirconium oxide, titanium oxide. Nanoparticles may be surface treated with some or all of the surface of a silicone compound for mixing with the silicone resin. Nanoparticles are not limited in shape and size. Specifically, the nanoparticles may include particles having a spherical shape, a plate shape, an amorphous shape, and the like. The nanoparticles may have an average particle diameter (D50) of about 1 nm to about 200 nm, specifically about 10 nm to about 50 nm.
  • D50 average particle diameter
  • the hardness of the window film can be increased without affecting the surface roughness and transparency of the window film.
  • the nanoparticles may be included in an amount of about 0.1 part by weight to about 60 parts by weight, specifically about 10 parts by weight to about 50 parts by weight, based on 100 parts by weight of the total amount of the first fluorine-containing silicone resin and the second silicon resin.
  • the hardness of the window film can be increased without affecting the surface roughness and transparency of the window film.
  • the composition for a window film according to the present embodiment may further include an additive.
  • the additive may provide additional functionality to the window film.
  • the additives may include additives that are typically added to the window film.
  • the additive may include, but is not limited to, at least one of a UV absorber, a reaction inhibitor, an adhesion enhancer, a thixotropic imparting agent, a conductivity imparting agent, a color adjuster, a stabilizer, an antistatic agent, and an antioxidant.
  • the reaction inhibitor may include ethynylcyclohexane.
  • An adhesion promoter may include a silane compound having an epoxy or alkoxysilyl group.
  • the thixotropic agent may include fumed silica and the like.
  • the conductivity providing agent may include metal powder such as silver and copper aluminum.
  • Dye control agents may include pigments, dyes and the like.
  • the UV absorber can increase the light resistance of the window film. UV absorbers can be used conventional absorbents known to those skilled in the art. Specifically, the UV absorber may include, but is not limited to, one or more UV absorbers of triazine-based, benzimidazole-based, benzophenone-based, and benzotriazole-based.
  • the additive may be included in an amount of about 0.01 parts by weight to about 5 parts by weight, specifically about 0.1 parts by weight to about 2.5 parts by weight, based on 100 parts by weight of the total of the first fluorine-containing silicone resin and the second silicon resin. In the above range can improve the hardness and flexibility of the window film and implement the additive effect.
  • the composition for a window film according to the present embodiment may further include a solvent in order to facilitate coating, coatability, or processability.
  • the solvent may include one or more of methyl ethyl ketone (MEK, methyl ethyl ketone), methyl isobutyl ketone, propylene glycol monomethyl ether acetate, but is not limited thereto.
  • composition for a window film according to this embodiment is substantially the same as the composition for a window film according to an embodiment of the present invention, except that the composition further includes a crosslinking agent.
  • the composition further includes a crosslinking agent, the hardness and flexibility of the window film can be improved.
  • the crosslinking agent may be cured with the first fluorine-containing silicone resin and the second silicone resin by containing a crosslinkable functional group to increase the hardness of the window film and improve flexibility.
  • the crosslinking agent may further increase the flexibility of the coating layer by further including at least one of a chain aliphatic hydrocarbon group, a cyclic aliphatic hydrocarbon group, and a hydrogenated aromatic hydrocarbon group.
  • the crosslinking agent may comprise one or more of a chained aliphatic epoxy monomer, a cyclic aliphatic epoxy monomer, a hydrogenated aromatic hydrocarbon epoxy monomer, an oxetane monomer, which may be included alone or in combination.
  • Chain aliphatic epoxy monomers include 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether, trimethylol propane triglycidyl ether, and polyethylene glycol diglycol.
  • the cyclic aliphatic epoxy monomer is a compound having one or more epoxy groups in the alicyclic group, and may specifically include an alicyclic epoxy carboxylate, an alicyclic epoxy (meth) acrylate, and the like. More specifically, (3,4-epoxycyclohexyl) methyl-3 ', 4'-epoxycyclohexanecarboxylate, diglycidyl 1,2-cyclohexanedicarboxylate, 2- (3,4- Epoxycyclohexyl-5,5-spiro-3,4-epoxy) cyclohexane-meta-dioxane, bis (3,4-epoxy-6-methylcyclohexyl) adipate, 3,4-epoxy-6-methyl Cyclohexylmethyl-3 ', 4'-epoxy-6'-methylcyclohexanecarboxylate, ⁇ -caprolactone modified 3,4-epoxycyclohexylmethyl-3',
  • Aromatic epoxy monomers include, for example, bisphenol type epoxy resins such as diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F, diglycidyl ether of bisphenol S, and the like; Novolac type epoxy resins such as phenol novolac epoxy resins, cresol novolac epoxy resins, hydroxybenzaldehyde phenol novolac epoxy resins; And polyfunctional epoxy resins such as glycidyl ether of tetrahydroxyphenylmethane, glycidyl ether of tetrahydroxybenzophenone, and epoxidized polyvinyl phenol.
  • bisphenol type epoxy resins such as diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F, diglycidyl ether of bisphenol S, and the like
  • Novolac type epoxy resins such as phenol novolac epoxy resins, cresol novolac epoxy resins, hydroxybenzaldehyde phenol novolac
  • Oxetane monomers include 3-methyloxetane, 2-methyloxetane, 2-ethylhexyl oxetane, 3-oxetanol, 2-methyleneoxetane, 3,3-oxetane dimethanethiol, 4- (3-methyl Oxetan-3-yl) benzonitrile, N- (2,2-dimethylpropyl) -3-methyl-3-oxetanemethaneamine, N- (1,2-dimethylbutyl) -3-methyl-3- Oxetanemethaneamine, (3-ethyloxetan-3-yl) methyl (meth) acrylate, 4-[(3-ethyloxetan-3-yl) methoxy] butan-1-ol, 3-ethyl- May comprise one or more of 3-hydroxymethyloxetane, xylenebisoxetane, 3- [ethyl-3 [[(3-e
  • the crosslinking agent may be included in an amount of about 1 part by weight to about 50 parts by weight, specifically about 1 part by weight to about 40 parts by weight, based on 100 parts by weight of the total amount of the first fluorine-containing silicone resin and the second silicon resin. In the above range it can ensure the flexibility and hardness of the coating layer, curl properties, optical properties.
  • composition for a window film according to this embodiment is substantially the same as the composition for a window film according to an embodiment of the present invention, except that the composition further includes a crosslinking agent and a fluorine-based (meth) acrylate resin.
  • the crosslinking agent is as described above.
  • the fluorine-based (meth) acrylate resin can simultaneously improve the hardness and appearance of the window film by compensating for the decrease in hardness of the window film due to the first fluorine-containing silicone resin.
  • the fluorine-based (meth) acrylate resin has a surface energy at 25 ° C. of the coating layer of the window film at about 30 mN / m or less, about 25 mN / m or less, for example, at about 23 mN / m to about 25 mN / m and 25 ° C. May have a water contact angle of about 90 ° or less, for example, about 85 ° to about 89 °. In the above range, there may be a surface quality improvement effect.
  • Fluorine-based (meth) acrylate resins may include commercially available products such as RS-75, KY-1203, and the like.
  • the fluorine-based (meth) acrylate resin is about 1 part by weight to about 20 parts by weight, specifically about 1 part by weight to about 10 parts by weight, based on 100 parts by weight of the total amount of the first fluorine-containing silicone resin and the second silicone resin. About 1 to about 5 parts by weight. In the above range, the hardness and appearance of the window film can be improved at the same time.
  • the first fluorine-containing silicone resin may be included in about 0.5% to about 2% by weight, specifically about 0.5% to about 1.5% by weight, based on the sum of the first fluorine-containing silicone resin and the second silicon resin. have. In the above range, the appearance and hardness of the window film can be improved at the same time.
  • FIG. 1 is a cross-sectional view of a flexible window film of one embodiment of the present invention.
  • a flexible window film 100 includes a base layer 110 and a coating layer 120, and the coating layer 120 is a window film according to embodiments of the present invention. It may be formed into a composition for.
  • the base layer 110 may support the flexible window film 100 and the coating layer 120 to increase the mechanical strength of the flexible window film 100.
  • the base layer 110 may be attached onto the display unit, the touch screen panel, or the polarizer by an adhesive layer.
  • the base layer 110 may be formed of an optically transparent and flexible resin.
  • resins include polyester resins including polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, and the like, polycarbonate resins, polyimide resins, polystyrene resins, polymethylmethacrylates, and the like. It may include one or more of the poly (meth) acrylate resin.
  • the resin may be included in the base layer 110 alone or in combination.
  • the base layer 110 may have a thickness of about 10 ⁇ m to about 200 ⁇ m, specifically about 20 ⁇ m to about 150 ⁇ m, and more specifically about 50 ⁇ m to about 100 ⁇ m. It can be used for the flexible window film in the above range.
  • the coating layer 120 is formed on the base layer 110 to protect the base layer 110 and the display unit, the touch screen panel, or the polarizing plate, improve the appearance, and have a high flexibility and high hardness to be used in a flexible display device. can do.
  • the coating layer 120 may have a thickness of about 5 ⁇ m to about 100 ⁇ m, specifically about 10 ⁇ m to about 80 ⁇ m. It can be used for the flexible window film in the above range.
  • another surface of the coating layer 120 may further include a functional surface layer such as an antireflection layer, an antiglare layer, a hard coating layer, and provide additional functions to the flexible window film.
  • the coating layer 120 may be further formed on the other surface of the substrate layer 110.
  • the flexible window film 100 may have a RIQ of about 85 or more, specifically about 85 to about 98, and an inferior reflectance at a wavelength of 550 nm of about 2% or less, specifically about 1.5% or less, more specifically about 0.8% to About 1.2%. Within this range, the appearance of the window film may be good and the display image may be clear.
  • the flexible window film 100 may have a light transmittance of about 88% or more and specifically about 88% to about 100% in the visible light region, specifically, about 400 nm to about 800 nm. It can be used as a flexible window film in the said range.
  • the flexible window film 100 may have a pencil hardness of about 4H or more and a radius of curvature of about 5.0 mm or less. In the above range, good hardness and flexibility can be used as a flexible window film.
  • the flexible window film 100 may have a pencil hardness of about 4H to about 9H and a radius of curvature of about 0.1 mm to about 5.0 mm.
  • the flexible window film 100 may have a thickness of about 5 ⁇ m to about 300 ⁇ m. It can be used as a flexible window film in the said range.
  • FIG. 2 is a cross-sectional view of a flexible window film according to another embodiment of the present invention.
  • the flexible window film 200 is except that the adhesive layer 130 is further formed on the other surface of the base layer 110. It is substantially the same as the flexible window film 100.
  • the adhesive layer 130 is further formed on the other surface of the base layer 110 to facilitate adhesion between the flexible window film and the touch screen panel, the polarizing plate, or the display unit. Except that the adhesive layer is further formed is substantially the same as the flexible window film according to an embodiment of the present invention. Thus, only the adhesive layer 130 will be described below.
  • the adhesive layer 130 may adhere to a polarizing plate, a touch screen panel, or a display unit that may be disposed below the flexible window film 200, and may be formed of a composition for an adhesive layer.
  • the pressure-sensitive adhesive layer 130 may be formed of a pressure-sensitive adhesive layer containing a pressure-sensitive resin, such as (meth) acrylic resin, urethane resin, silicone resin, epoxy resin, curing agent, photoinitiator, silane coupling agent.
  • the (meth) acrylic resin is a (meth) acrylic copolymer having an alkyl group, a hydroxyl group, an aromatic group, a carboxylic acid group, an alicyclic group, a heteroalicyclic group, or the like, and may include a conventional (meth) acrylic copolymer.
  • a (meth) acrylic monomer having a C1 to C10 unsubstituted alkyl group a (meth) acrylic monomer having a C1 to C10 alkyl group having at least one hydroxyl group, a (meth) acrylic monomer having a C6 to C20 aromatic group , (Meth) acrylic monomer having a carboxylic acid group, (meth) acrylic monomer having a C3 to C20 alicyclic group, C3 to C10 heteroalicyclic having at least one of nitrogen (N), oxygen (O), sulfur (S) It may be formed of a monomer mixture including at least one of the (meth) acrylic monomer having a group.
  • the curing agent is a polyfunctional (meth) acrylate, such as bifunctional (meth) acrylates such as hexanediol diacrylate; Trifunctional (meth) acrylate of trimethylolpropane tri (meth) acrylate; Tetrafunctional (meth) acrylates such as pentaerythritol tetra (meth) acrylate; 5-functional (meth) acrylates such as dipentaerythritol penta (meth) acrylate; 6 functional (meth) acrylates, such as dipentaerythritol hexa (meth) acrylate, may be included, but is not limited thereto.
  • the photoinitiator may include the photoradical initiator described above as a conventional photoinitiator.
  • the silane coupling agent may include a silane coupling agent having an epoxy group such as 3-glycidoxypropyltrimethoxysilane and the like.
  • the adhesive layer composition may include 100 parts by weight of a (meth) acrylic resin, about 0.1 part by weight to about 30 parts by weight of a curing agent, about 0.1 part by weight to about 10 parts by weight of a photoinitiator, and about 0.1 part by weight to about 20 parts by weight of a silane coupling agent. have.
  • the flexible window film may be attached well on the display unit, the touch screen panel or the polarizing plate.
  • the adhesive layer 130 may have a thickness of about 10 ⁇ m to about 100 ⁇ m.
  • Optical elements such as a flexible window film and a polarizing plate, can fully be stuck in the said range.
  • FIGS. 3 and 4 are cross-sectional views of a flexible display device according to an embodiment of the present invention
  • FIG. 4 is a cross-sectional view of an embodiment of the display unit of FIG. 3.
  • the flexible display device 300 may include a display unit 350a, an adhesive layer 360, a polarizer 370, a touch screen panel 380, and a flexible window film 390.
  • the flexible window film 390 may include a flexible window film according to embodiments of the present invention.
  • the display unit 350a is for driving the flexible display apparatus 300 and may include an optical element including a substrate and an OLED, an LED, or an LCD element formed on the substrate.
  • 4 is a cross-sectional view according to an exemplary embodiment of the display unit of FIG. 3.
  • the display 350a may include a lower substrate 310, a thin film transistor 316, an organic light emitting diode 315, a planarization layer 314, a passivation layer 318, and an insulating layer 317. have.
  • the lower substrate 310 supports the display unit 350a, and the thin film transistor 316 and the organic light emitting diode 315 may be formed on the lower substrate 310.
  • a flexible printed circuit board for driving the touch screen panel 380 may be formed on the lower substrate 310.
  • the flexible printed circuit board may further include a timing controller, a power supply, and the like for driving the organic light emitting diode array.
  • the lower substrate 310 may include a substrate formed of a flexible resin.
  • the lower substrate 310 may include a flexible substrate such as a silicon substrate, a polyimide substrate, a polycarbonate substrate, a polyacrylate substrate, but is not limited thereto.
  • a plurality of pixel areas are defined by crossing a plurality of driving wires (not shown) and sensor wires (not shown), and the thin film transistor 316 and the thin film transistor 316 are defined for each pixel area.
  • the organic light emitting diode array including the organic light emitting diode 315 connected to the) may be formed.
  • a gate driver for applying an electrical signal to the driving line may be formed in the form of a gate in panel.
  • the gate-in panel circuit unit may be formed on one side or both sides of the display area.
  • the thin film transistor 316 controls the current flowing through the semiconductor by applying an electric field perpendicular to the current, and may be formed on the lower substrate 310.
  • the thin film transistor 316 may include a gate electrode 310a, a gate insulating layer 311, a semiconductor layer 312, a source electrode 313a, and a drain electrode 313b.
  • the thin film transistor 316 is an oxide thin film transistor using an oxide such as indium gallium zinc oxide (IGZO), ZnO, or TiO as the semiconductor layer 312, an organic thin film transistor using an organic material as the semiconductor layer, and amorphous silicon as the semiconductor layer. It may be an amorphous silicon thin film transistor to be used, or a polycrystalline silicon thin film transistor to use polycrystalline silicon as a semiconductor layer.
  • the planarization layer 314 may cover the thin film transistor 316 and the circuit portion 310b to planarize the top surfaces of the thin film transistor 316 and the circuit portion 310b so that the organic light emitting diode 315 may be formed.
  • the planarization layer 314 may be formed of a spin-on-glass (SOG) film, a polyimide polymer, a polyacrylic polymer, or the like, but is not limited thereto.
  • the organic light emitting diode 315 implements a display by emitting light by itself, and may include a first electrode 315a, an organic light emitting layer 315b, and a second electrode 315c which are sequentially stacked. Adjacent organic light emitting diodes may be distinguished through the insulating layer 317.
  • the organic light emitting diode 315 may include a bottom light emitting structure in which light generated in the organic light emitting layer 315b is emitted through the lower substrate, or a top light emitting structure in which light generated in the organic light emitting layer 315b is emitted upward.
  • the passivation layer 318 may cover the organic light emitting diode 315 to protect the organic light emitting diode 315.
  • the passivation layer 318 may be formed of an inorganic material such as SiOx, SiNx, SiC, SiON, SiONC, and amorphous carbon (aC). It may be formed of an organic material such as meth) acrylate, epoxy polymer, imide polymer and the like.
  • the passivation layer 318 may include an encapsulation layer in which a layer formed of an inorganic material and a layer formed of an organic material are sequentially stacked one or more times.
  • the adhesive layer 360 adheres the display unit 350a and the polarizing plate 370, and is formed of an adhesive composition including a (meth) acrylate-based resin, a curing agent, an initiator, and a silane coupling agent. Can be.
  • the polarizer 370 may implement polarization of internal light or prevent reflection of external light to implement a display or increase a contrast ratio of the display.
  • the polarizing plate may be composed of a polarizer alone.
  • the polarizer may include a polarizer and a protective film formed on one or both sides of the polarizer.
  • the polarizing plate may include a polarizer and a protective coating layer formed on one or both surfaces of the polarizer.
  • the polarizer, the protective film, and the protective coating layer may use a conventional one known to those skilled in the art.
  • the touch screen panel 380 detects a change in capacitance generated when a human body or a conductor such as a stylus touches to generate an electrical signal.
  • the display unit 350a may be driven by the signal.
  • the touch screen panel 380 is formed by patterning a flexible and conductive conductor, and may include a second sensor electrode formed between the first sensor electrode and the first sensor electrode to cross the first sensor electrode. have.
  • the conductor for the touch screen panel 380 may include, but is not limited to, metal nanowires, conductive polymers, carbon nanotubes, and the like.
  • the flexible window film 390 may be formed on the outermost side of the flexible display device 300 to protect the display device.
  • an adhesive layer is further formed between the polarizing plate 370 and the touch screen panel 380 and / or between the touch screen panel 380 and the flexible window film 390 to form a polarizing plate, a touch screen panel, and a flexible display panel.
  • the bond between the window films can be strengthened.
  • the adhesive layer may be formed of an adhesive composition including a (meth) acrylate resin, a curing agent, an initiator, and a silane coupling agent.
  • a polarizer may be further formed below the display unit 350a to implement polarization of the internal light.
  • FIG. 5 is a cross-sectional view of a flexible display device according to another exemplary embodiment of the present invention.
  • the flexible display device 400 includes a display 350a, a touch screen panel 380, a polarizer 370, and a flexible window film 390.
  • the window film 390 may include a flexible window film according to embodiments of the present invention.
  • Flexible display according to an embodiment of the present invention except that the touch screen panel 380 is not directly formed on the flexible window film 390, but the touch screen panel 380 is formed below the polarizer 370. It is substantially the same as the device. In this case, the touch screen panel 380 may be formed together with the display 350a.
  • the touch screen panel 380 since the touch screen panel 380 is formed together with the display unit 350a on the display unit 350a, the display panel 350a may be thinner and brighter than the flexible display device according to the exemplary embodiment of the present invention, and thus may have good visibility.
  • the touch screen panel 380 may be formed by deposition, but is not limited thereto.
  • the pressure-sensitive adhesive layer is further formed therein to increase the mechanical strength of the display device.
  • the adhesive layer may be formed of an adhesive composition including a (meth) acrylate resin, a curing agent, an initiator, and a silane coupling agent.
  • a polarizing plate is further formed below the display unit 350a to induce polarization of internal light to improve a display image.
  • the flexible display apparatus 500 includes a display unit 350b, an adhesive layer 360, and a flexible window film 390, and a flexible window film 390. May include a flexible window film according to embodiments of the present invention. It is substantially the same as the flexible display device according to the exemplary embodiment of the present invention except that the device may be driven only by the display unit 350b and the polarizer and the touch screen panel are excluded.
  • the display unit 350b may include a substrate and an optical element including an LCD, an OLED, or an LED element formed on the substrate, and the display unit 350b may have a touch screen panel therein.
  • the first fluorine-containing silicone resin of formula 1 is a silicone monomer that provides (R a SiO (4-a) / 2 ) and a silicone monomer that provides (X b SiO (4-b) / 2 ) It may be prepared by the hydrolysis and condensation reaction of the silicone mixture comprising a.
  • the silicone monomers providing (R a SiO (4-a) / 2 ) are 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyl Triethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyl Dimethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyltriethoxysilane, and the like, but is not limited thereto.
  • the silicone monomers providing (X b SiO (4-b) / 2 ) are 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane, 1H, 1H, 2H, 2H-perfluorojade.
  • Tyltrimethoxysilane 1H, 1H, 2H, 2H-perfluorohexyltrimethoxysilane, 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane, 1H, 1H, 2H, 2H-perfluoro Octyltriethoxysilane, 1H, 1H, 2H, 2H-perfluorohexyltriethoxysilane, and the like, but is not limited thereto.
  • the monomer mixture is a (R a SiO (4-a ) / 2) silicone monomer about 0.01mol% to about 99.99mol%, specifically from about 80mol% to about 99.99mol%, and more specifically to provide about 90 mol% to about 99.5 mol%, about 0.01 mol% to about 99.99 mol%, specifically about 0.01 mol% to about 20 mol%, more specifically about about 0.1 mol% of a silicone monomer providing (X b SiO (4-b) / 2 ) 0.5 mol% to about 10 mol%.
  • the appearance of the window film can be improved and less glare.
  • a second silicone resin is silicone monomer to provide a silicon monomer alone, or (R 1 SiO 3/2) to provide (R 1 SiO 3/2) according to the embodiment; And (R 2 R 3 SiO 2/ 2) a silicon monomer, to provide a (R 4 R 5 R 6 SiO 1/2) to provide the silicon monomer, (SiO 4/2) at least one mixture of the silicone monomers to provide for It can be prepared by the hydrolysis and condensation reaction of.
  • (R 1 SiO 3/2) to provide a silicone monomer is 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyl triethoxysilane, 3- doksi glycidyl trimethoxysilane, 3-glycidoxypropyltrimethoxysilane and the like can be the doksi propyl triethoxysilane, (R 2 R 3 SiO 2 /2) to provide a silicon monomer include dimethyl dimethoxysilane, dimethyl diethoxysilane , Diethyldiethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyltriethoxysilane, and the like, (SiO 4 / 2 ) may be te
  • the monomer mixture (R 1 SiO 3/2) silicone monomer 100mol% which provides, specifically from about 85mol% to about 99mol%, about 1mol% to about 15mol%, about 40mol% to about 95mol%, It may be about 1mol% to about 40mol%, (SiO 4/2 ) silicon monomer from about 0mol%, about 1mol% to about 20mol% to service. In the above range, the hardness and flexibility of the window film can be improved.
  • Hydrolysis and condensation reaction of the monomer mixture can be carried out according to a conventional method for producing a silicone resin.
  • Hydrolysis can include reacting the monomer mixture in water and in a mixture of one or more of the desired acids, bases.
  • the acid may be HCl, HNO 3 , acetic acid and the like
  • the base may be NaOH, KOH and the like.
  • the hydrolysis may be performed at about 20 ° C. to about 100 ° C. for about 10 minutes to about 10 hours
  • the condensation reaction may be performed at about 20 ° C. to about 100 ° C. for about 10 minutes to about 12 hours under the same conditions as the hydrolysis. have. In the above range, the production yield of the silicone resin may be high.
  • the flexible window film 100 may be manufactured by a method of manufacturing a flexible window film including coating and curing a composition for a window film according to embodiments of the present invention on a base layer 110.
  • the method of coating the composition for the window film on the base layer 110 may be bar coating, spin coating, dip coating, roll coating, flow coating, die coating, or the like, but is not limited thereto.
  • the composition for the window film may be coated on the base layer 110 in a thickness of about 5 ⁇ m to about 100 ⁇ m. It is possible to secure the desired coating layer in the above range and may have an excellent effect of hardness and flexibility.
  • Curing is to form a coating layer by curing the composition for a window film, and may include at least one of photocuring and thermal curing. Photocuring may involve irradiation with light intensity of approximately 10mJ / cm 2 to about 1,000mJ / cm 2 at a wavelength of 400nm or less. Thermal curing may include treatment at about 40 ° C.
  • the composition for a window film may be sufficiently cured.
  • it may be thermally cured after photocuring, and as a result, the hardness of the coating layer may be further increased.
  • the method may further include drying the composition for a window film before the composition for a window film is coated on the base layer 110 and then cured. By curing after drying, it is possible to prevent the surface roughness of the coating layer from increasing due to prolonged photocuring and thermal curing. Drying may be performed at about 40 ° C. to about 200 ° C. for about 1 minute to about 30 hours, but is not limited thereto.
  • a first fluorine-containing silicone resin was prepared in the same manner except for changing the type and / or content of the silicone monomer in Preparation Example 1-1 as shown in Table 1 below.
  • the structure of the silicone resin of a manufacture example is as Table 1 below.
  • the coating layer composition was applied to a PI film (polyimide film, SDI, thickness: 80 ⁇ m), dried at 100 ° C. for 5 minutes, and then exposed to 1000 mJ UV light to prepare a coating film having a thickness of 50 ⁇ m. Postcure was carried out in an oven for 24hr to prepare a window film.
  • Example 1 the window film was manufactured in the same manner except for changing the type and content of the first fluorine-containing silicone resin and the second silicone resin, the content of the crosslinking agent, and / or the thickness of the coating layer as shown in Table 2 below. .
  • composition for coating layer on a PI film polyimide film, SDI, thickness: 80 ⁇ m
  • PI film polyimide film, SDI, thickness: 80 ⁇ m
  • Postcure for 24hr in a 100 °C oven to prepare a window film.
  • a window film was manufactured in the same manner as in Example 11, except that the content of the first fluorine-containing silicone resin of Preparation Example 1-1, the second silicone resin of Preparation Example 4, a crosslinking agent, and an initiator were changed as shown in Table 3 below. It was.
  • a window film was manufactured in the same manner except in Example 15, 5g of fluorine acrylate resin RS-75 was used.
  • a composition for a window coating layer 25 g of Epoxy hybrimer (Solip Co., Ltd.) and 20 g of diluent MEK (Daejung Chemical) were mixed to prepare a composition for a window coating layer.
  • the composition for window coating layer was applied to a PI film (polyimide film, SDI, thickness: 80 ⁇ m), dried at 100 ° C. for 5 minutes, and then exposed to 1000 mJ UV light to prepare a coating layer having a thickness of 10 ⁇ m. Postcure was performed in the oven for 24hr.
  • RIQ The window coating layer of the window film was measured by Rhopoint IQ of Rhopoint.
  • Pencil hardness It measures by the JIS K5400 method using the pencil hardness meter (Heidon) about the coating layer of a window film. In measuring the pencil hardness, a pencil of 6B to 9H manufactured by Mitsubishi Corporation was used. The load of the pencil on the coating layer was 1 kg, the angle at which the pencil was drawn was 45 °, and the speed at which the pencil was drawn was 60 mm / min. If the scratch occurs more than one time to evaluate five times, the pencil hardness is measured using the pencil of the step below, the five times the five times the maximum pencil hardness value when there is no scratch.
  • Curvature radius The window film (width x length, 1cmx10cm) was evaluated visually whether the crack generate
  • Example 11 12 13 14 15 16 1st fluorine-containing silicone resin (by weight) Preparation Example 1-1 0.5 One 5 10 One One Preparation Example 1-2 - - - - - - Preparation Example 1-3 - - - - - - Preparation Example 1-4 - - - - - - 2nd silicone resin (part by weight) Preparation Example 4 99.5 99 95 90 99 99 Crosslinking agent (parts by weight) 40 40 40 40 40 40 40 40 40 Fluorine (meth) acrylate resin (parts by weight) - - - - 2 5 Initiator (parts by weight) One One One One One One One One One Coating layer thickness ( ⁇ m) 50 50 50 50 50 50 50 50 50 50 50 50 RIQ 88.1 91.3 93.5 94.0 93.6 94.2 Pencil hardness 6H 6H 5H 5H 7H 8H Exterior 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
  • Comparative Example 1 Comparative Example 2 Comparative Example 3 2nd silicone resin (part by weight) Preparation Example 2 100 - 100 Epoxy hybrimer (parts by weight) - 100 - Crosslinking agent (parts by weight) 25 - 25 Initiator (parts by weight) One - One Fluorine-containing leveling agent (parts by weight) - - 2.5 Coating layer thickness ( ⁇ m) 10 10 10 RIQ 76.6 83.7 79.8 Diffuse reflectance (%, @ 550nm) 2.109 1.361 1.179 Pencil hardness 9H 9H 4H Bending Radius (mm) 0.39 0.38 0.14 Exterior One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One Fluorine-containing leveling agent (parts by weight) - - 2.5 Coating layer thickness ( ⁇ m) 10 10 10 10 RIQ 76.6 83.7 79.8 Diffuse
  • the flexible window film of the present invention had an RIQ of 85 or more and an egg reflectance of 2% or less, which was excellent in appearance and less glare.
  • the flexible window film of the present invention has a pencil hardness of 4H or more, a high hardness, a radius of curvature of 5.0 mm or less, and excellent flexibility, and thus can be used as a flexible window film.
  • the window film containing a fluorine-based acrylate resin was improved hardness compared to the window film containing the same amount of the first fluorine-containing silicone resin, but also improved the appearance of the window film.
  • the comparative example does not include a first fluorine-containing silicone resin, the RIQ was less than 85 was not good appearance.

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Abstract

L'invention concerne une composition pour un film de fenêtre et un film de fenêtre flexible formé à partir de celle-ci, la composition comprenant : une première résine de silicone contenant du fluor ; une seconde résine de silicone ayant un groupe époxy ou un un groupe fonctionnel contenant un groupe époxy ; et un initiateur. Le film de fenêtre flexible présente un faible facteur de réflexion diffuse ainsi qu'une dureté et une souplesse excellentes.
PCT/KR2016/014146 2016-02-18 2016-12-02 Composition pour film de fenêtre et film de fenêtre flexible formé à partir de celle-ci WO2017142174A1 (fr)

Applications Claiming Priority (4)

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KR10-2016-0019383 2016-02-18
KR20160019383 2016-02-18
KR1020160071345A KR101963003B1 (ko) 2016-02-18 2016-06-08 윈도우 필름용 조성물 및 이로부터 형성된 플렉시블 윈도우 필름
KR10-2016-0071345 2016-06-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113136149A (zh) * 2020-01-17 2021-07-20 欧富莱斯有限公司 用于显示装置的亮度均匀性的保护膜及包括其的显示装置

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Publication number Priority date Publication date Assignee Title
US20060014090A1 (en) * 2004-07-16 2006-01-19 Fuji Xerox Co., Ltd. Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus
US20110027702A1 (en) * 2008-03-11 2011-02-03 3M Innovative Properties Company Hardcoat composition
WO2011028075A2 (fr) * 2009-09-04 2011-03-10 위더스케미칼 주식회사 Composition de revêtement dur, procédé de production et film de revêtement dur obtenu au moyen de la composition de revêtement dur
US20110230594A1 (en) * 2008-12-12 2011-09-22 Jouko Vyorykka Coating composition, a process of producing a coating composition, a coated article, and a method of forming such articles
JP2014176988A (ja) * 2013-03-14 2014-09-25 Fujifilm Corp 積層フィルムおよび表示装置

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Publication number Priority date Publication date Assignee Title
US20060014090A1 (en) * 2004-07-16 2006-01-19 Fuji Xerox Co., Ltd. Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus
US20110027702A1 (en) * 2008-03-11 2011-02-03 3M Innovative Properties Company Hardcoat composition
US20110230594A1 (en) * 2008-12-12 2011-09-22 Jouko Vyorykka Coating composition, a process of producing a coating composition, a coated article, and a method of forming such articles
WO2011028075A2 (fr) * 2009-09-04 2011-03-10 위더스케미칼 주식회사 Composition de revêtement dur, procédé de production et film de revêtement dur obtenu au moyen de la composition de revêtement dur
JP2014176988A (ja) * 2013-03-14 2014-09-25 Fujifilm Corp 積層フィルムおよび表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113136149A (zh) * 2020-01-17 2021-07-20 欧富莱斯有限公司 用于显示装置的亮度均匀性的保护膜及包括其的显示装置
CN113136149B (zh) * 2020-01-17 2023-04-18 欧富莱斯有限公司 用于显示装置的亮度均匀性的保护膜及包括其的显示装置

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