Anti-dazzle low-reflection film

Abstract

The invention discloses an anti-dazzle low-reflection film. The anti-dazzle low-reflection film comprises a base material layer, a high-refractive-index pre-coating layer, a high-refractive-index anti-dazzle coating layer and a low-refractive-index coating layer which are stacked, the refractive indexes of the high-refractive-index precoating and the high-refractive-index anti-dazzle coating are larger than that of the base material layer, and the refractive index of the base material layer is larger Coating liquid of the high-refractive-index anti-dazzle coating comprises outer anti-dazzle particles and inner anti-dazzle high-refractive-index particles, the outer anti-dazzle particles protrude out of the face, away from the base material layer, of the high-refractive-index anti-dazzle coating so that an outer anti-dazzle surface can be formed on the outer surface of the low-refractive-index coating, and the inner anti-dazzle high-refractive-index particles are distributed in the high-refractive-index anti-dazzle coating. The high-refractive-index anti-dazzle coating is directly arranged on the surface of the pre-coating, and the anti-dazzle coating and the low-refractive-index coating are matched to form an anti-reflection structure, so that the reflectivity of the thin film is effectively reduced; the outer anti-dazzle particles can protrude and keep high outer haze, the inner anti-dazzle high-refractive-index particles improve the refractive index of the anti-dazzle coating and provide inner haze, and the anti-dazzle effect of the film is effectively guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of optical films, and in particular relates to an anti-glare and low-reflection film. Background Art

[0002] Modern displays and devices are often used in a variety of lighting conditions, including strong natural or artificial light. Anti-glare and low-reflection films can effectively reduce the reflected and scattered light on the screen surface, making the displayed content clearer, the colors more vivid, and the contrast higher, thereby providing a more vivid and realistic visual experience and alleviating the user's visual fatigue.

[0003] At present, in order to ensure the adhesion of the coating, the existing wet-process anti-glare and low-reflection films usually have a low-refractive index pre-coating (Primer) on the surface of the PET substrate. The refractive index of the pre-coating of the PET substrate is 1.5-1.55. In order to match the refractive index of the pre-coating and avoid undesirable phenomena such as rainbow patterns, a hard coating with a refractive index of 1.5-1.55 can only be coated on top of the pre-coating. At the same time, in order to reduce the reflectivity of the film, a layer of nano-scale high-refractive coating needs to be added, and finally a layer of nano-scale low-reflective coating is coated on top of it, thereby forming a wet-process low-reflection film composed of a substrate pre-coating, a high-hard coating, a high-refractive coating and a low-reflective layer.

[0004] Wet-process low-reflection film technology requires a certain thickness range to achieve the best anti-reflection effect, and the stability of the coating thickness may also affect the consistency and stability of the product. The wet-process low-reflection film with the above structure is difficult to control the thickness of each layer for wet coating. The high-refractive coating and the low-reflection coating are both nanometer-level thick. Uneven thickness can easily cause the reflectivity of the film to increase. Under actual process conditions, it is difficult to control the required coating thickness, resulting in problems such as high reflectivity and poor color uniformity in the TD direction. Summary of the invention

[0005] The purpose of the present application is to provide an anti-glare and low-reflection film to solve the technical problems existing in the prior art that the thickness of each layer of the anti-glare and low-reflection film is difficult to control, the reflectivity is high, and it is difficult to meet the use requirements in specific scenarios.

[0006] In order to achieve the above-mentioned object, the present application provides an anti-glare and low-reflection film, comprising a substrate layer, a high-refractive index pre-coating layer, a high-refractive index anti-glare coating layer and a low-refractive index coating layer stacked in sequence;

[0007] The absolute value of the difference in refractive index between the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is 0 to 0.02, and the refractive index of the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is greater than that of the substrate layer, and the refractive index of the substrate layer is greater than that of the low refractive index coating layer;

[0008] The coating liquid of the high refractive index anti-glare coating comprises external anti-glare particles and internal anti-glare high-refractive index particles, wherein the external anti-glare particles protrude from the side of the high refractive index anti-glare coating away from the substrate layer so that the outer surface of the low refractive index coating forms an uneven external anti-glare surface, and the internal anti-glare high-refractive index particles are distributed inside the high refractive index anti-glare coating, and the weight ratio of the external anti-glare particles to the internal anti-glare high-refractive index particles is (7-9):(1-3).

[0009] In one or more embodiments, the refractive index of the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is 1.63-1.68, the refractive index of the low refractive index coating layer is 1.33-1.4, and the refractive index of the substrate layer is 1.47-1.55.

[0010] In one or more embodiments, the total haze A of the anti-glare and low-reflection film satisfies the following formula: A≥85%B, wherein B is the total haze of the anti-glare and low-reflection film after removing the low-refractive index coating.

[0011] In one or more embodiments, the thickness of the high refractive index pre-coating layer is 30 to 60 nm, and the coating solution of the high refractive index pre-coating layer comprises the following components in parts by weight:

[0012] 20-30 parts of hydrolyzed polymer, 20-30 parts of waterborne polyurethane, 5-10 parts of photoinitiator, 10-20 parts of wetting agent, and 10-35 parts of organic solvent.

[0013] In one or more embodiments, the hydrolyzed polymer includes a methacryloxysilane hydrolyzed polymer, and the waterborne polyurethane includes a waterborne polyurethane.

[0014] In one or more embodiments, the thickness of the high refractive index anti-glare coating is 4 to 6 μm, and the coating solution of the high refractive index anti-glare coating comprises the following components in parts by weight:

[0015] 30-40 parts of epoxy acrylic resin, 5-10 parts of external anti-glare particles, 1-5 parts of internal anti-glare high-refractive particles, 5-10 parts of photoinitiator, 5-10 parts of leveling agent, and 25-40 parts of organic solvent.

[0016] In one or more embodiments, the functionality of the epoxy acrylic resin is 5-10.

[0017] In one or more embodiments, the external anti-glare particles are silicon dioxide particles with a particle size of 3 to 4 μm, and the internal anti-glare high-refractive particles are one or a combination of aluminum oxide particles and zirconium oxide particles, and the particle size of the aluminum oxide particles and zirconium oxide particles is 100 to 300 nm.

[0018] In one or more embodiments, the thickness of the low refractive index coating is 95 to 105 nm, and the coating solution of the low refractive index coating comprises the following components in parts by weight:

[0019] 20-30 parts of fluorine-containing multifunctional (meth) acrylic resin, 10-20 parts of multifunctional acrylate monomer, 5-10 parts of photoinitiator, 10-15 parts of hollow silica particles, 5-10 parts of leveling agent, and 25-45 parts of organic solvent.

[0020] In one or more embodiments, the high refractive index pre-coating layer and the high refractive index anti-glare coating layer are coated by a micro-dimpled coating method.

[0021] Different from the prior art, the beneficial effects of this application are:

[0022] The anti-glare and low-reflection film of the present application has a high-refractive index pre-coating layer arranged on the surface of the substrate layer, and a high-refractive index anti-glare coating layer can be directly arranged on the surface of the pre-coating layer, so that the anti-glare coating layer and the low-refractive index coating layer can cooperate to form an anti-reflection structure, effectively reducing the reflectivity of the film, and the reflectivity reaches below 1.5%, which can meet the needs of specific scenes;

[0023] The anti-glare low-reflection film of the present application has only a low-reflectivity coating layer with a nanometer-level thickness. Compared with the existing low-reflection films, the difficulty of wet coating process is effectively reduced, the stability of the thickness of each layer in the wet coating process is improved, and it helps to ensure the consistency and stability of the product.

[0024] The high refractive index anti-glare coating of the anti-glare low-reflection film of the present application includes external anti-glare particles and internal anti-glare high-refractive index particles. The external anti-glare particles can protrude from the surface of the high-refractive index anti-glare coating, thereby forming an uneven external anti-glare surface on the outside of the low-reflectivity coating, so that a relatively high external haze can be maintained after the low-reflectivity coating is applied. The internal anti-glare high-refractive index particles can increase the refractive index of the anti-glare coating on the one hand, and provide internal haze on the other hand. By adjusting the ratio of the external anti-glare particles to the internal anti-glare high-refractive index particles, the anti-glare effect of the film is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of an embodiment of the anti-glare and low-reflection film of the present application;

[0027] Figure 21 is a SEM image of the surface of the high refractive index anti-glare coating and the surface of the anti-glare low-reflection film of Example 1.

[0028] As shown in the figure:

[0029] Base material layer 100;

[0030] High refractive index pre-coating 200;

[0031] High refractive index anti-glare coating 300; external anti-glare particles 301; internal anti-glare high refractive index particles 302;

[0032] Low refractive index coating 400. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0034] Anti-glare and low-reflection film technology meets the high requirements of modern display devices for visual clarity and comfort by improving the optical performance and user experience of the screen. However, the reflectivity of conventional anti-glare and low-reflection films is generally higher than 2%, which is difficult to meet the needs of specific scenarios.

[0035] In order to solve the above problems, the applicant has developed a new type of anti-glare and low-reflection film, which can further reduce the reflectivity while ensuring the anti-glare effect. The reflectivity can reach below 1.5%, meeting the needs of specific scenarios.

[0036] Specifically, see Figure 1 , Figure 1 It is a schematic structural diagram of an embodiment of the anti-glare and low-reflection film of the present application.

[0037] like Figure 1 As shown, the film includes a substrate layer 100, a high refractive index pre-coating layer 200, a high refractive index anti-glare coating layer 300 and a low refractive index coating layer 400 which are stacked in sequence.

[0038] In order to ensure that the refractive index of each layer of the film matches and avoid the rainbow pattern caused by refractive index mismatch, the absolute value of the difference in refractive index between the high refractive index pre-coating 200 and the high refractive index anti-glare coating 300 is 0-0.02, and the refractive index of the high refractive index pre-coating 200 and the high refractive index anti-glare coating 300 is greater than that of the substrate layer 100.

[0039] In order to ensure the low reflection effect, the refractive index of the substrate layer 100 is greater than that of the low refractive index coating 400, thereby forming a high-low refractive composite anti-reflection structure.

[0040] In one embodiment, the refractive index of the high refractive index pre-coating layer 200 and the high refractive index anti-glare coating layer 300 may be 1.63-1.68, the refractive index of the substrate layer 100 may be 1.47-1.55, and the refractive index of the low refractive index coating layer 400 may be 1.33-1.4.

[0041] In order to ensure that the film still has a good anti-glare effect after the low-refractive index coating 400 is coated on the high-refractive index anti-glare coating 300, the coating liquid of the high-refractive index anti-glare coating 300 in the present application includes external anti-glare particles 301 and internal anti-glare high-refractive index particles 302. The external anti-glare particles 301 protrude from the side of the high-refractive index anti-glare coating 300 that is away from the substrate layer 100, so that the outer surface of the low-refractive index coating 400 forms an uneven external anti-glare surface. The internal anti-glare high-refractive index particles 302 are distributed inside the high-refractive index anti-glare coating 300. The weight ratio of the external anti-glare particles 301 to the internal anti-glare high-refractive index particles 302 is (7-9):(1-3).

[0042] Based on the above design, after coating the low refractive index coating 400, it can still provide an uneven external anti-glare surface, effectively increasing the external haze. After coating the low refractive index coating 400, the total haze loss of the film is less than 15%; at the same time, the internal anti-glare high-refractive particles 302 dispersed inside the high refractive index anti-glare coating 300 can ensure the internal haze, and at the same time adjust the refractive index of the high refractive index anti-glare coating 300. By adjusting the weight ratio of the external anti-glare particles 301 and the internal anti-glare high-refractive particles 302, it can be ensured that the film has appropriate external haze and internal haze, thereby ensuring the anti-glare effect of the film while ensuring the low reflection effect.

[0043] The following is a detailed introduction to the materials of each layer of anti-glare and low-reflection film.

[0044] Specifically, the substrate layer 100 may be a TAC substrate layer 100 , and its thickness may be adjusted based on actual needs. Preferably, the total light transmittance of the TAC substrate layer 100 is greater than 90%. Exemplarily, the thickness of the TAC substrate layer 100 may be 60 μm or 80 μm.

[0045] In one embodiment, the thickness of the high refractive index pre-coating layer 200 can be 30 to 60 nm, and the coating liquid of the high refractive index pre-coating layer 200 can include the following components in parts by weight: 20 to 30 parts of hydrolyzed polymer, 20 to 30 parts of water-based polyurethane, 5 to 10 parts of photoinitiator, 10 to 20 parts of wetting agent, and 10 to 35 parts of organic solvent.

[0046] Among them, the hydrolyzed polymer can be a methacryloxysilane hydrolyzed polymer, the waterborne polyurethane can be a waterborne polyurethane, the photoinitiator can be benzophenone, the wetting agent can be dodecyldimethylammonium chloride, and the organic solvent can be butanone, propylene glycol methyl ether, methyl isobutyl ketone, isopropyl alcohol, ethyl acetate, etc.

[0047] Since the TAC substrate has a lower surface tension, its surface is not easy to interact with water-based coatings. In order to improve the coating performance, the present application adjusts the surface tension by adding a hydrolyzed polymer to the high refractive index pre-coating layer 200, so that the coating is easier to wet and cover the surface of the TAC substrate layer 100. During coating, the water and solvent in the high refractive index pre-coating layer 200 will be adsorbed on the surface of the TAC substrate and diffuse into the inside of the TAC substrate. In this way, the resin, filler and other additives in the coating can contact the TAC substrate and form physical adsorption or chemical bonding with its surface to achieve good adhesion. After coating, the water or other solvents in the high refractive index pre-coating layer 200 will gradually evaporate, so that the resin or polymer forms a solid film and combines with the TAC substrate. During the drying and curing process, the interaction between the coating and the TAC substrate will be further enhanced to ensure the stability and adhesion of the coating.

[0048] In one embodiment, the thickness of the high refractive index anti-glare coating 300 may be 4-6 μm, and the coating solution of the high refractive index anti-glare coating 300 may include the following components in parts by weight:

[0049] 30-40 parts of epoxy acrylic resin, 3015-10 parts of external anti-glare particles, 3021-5 parts of internal anti-glare high-refractive particles, 5-10 parts of photoinitiator, 5-10 parts of leveling agent, and 25-40 parts of organic solvent.

[0050] Among them, the functionality of the epoxy acrylic resin can be 5 to 10, thereby improving the hardness and wear resistance of the coating; the photoinitiator can be benzophenone, the leveling agent can be polyether modified silane, and the organic solvent can be butanone, propylene glycol methyl ether, methyl isobutyl ketone, isopropyl alcohol, ethyl acetate, etc.

[0051] In one embodiment, the thickness of the low refractive index coating 400 may be 95-105 nm, and the low refractive index coating 400 may include the following components in parts by weight:

[0052] 20-30 parts of fluorine-containing multifunctional (meth) acrylic resin, 10-20 parts of multifunctional acrylate monomer, 5-10 parts of photoinitiator, 10-15 parts of hollow silica particles, 5-10 parts of leveling agent, and 25-45 parts of organic solvent.

[0053] In one embodiment, the particle size of the hollow silica particles may be 30 to 60 nm.

[0054] In one embodiment, the high refractive index pre-coating layer 200 and the high refractive index anti-glare coating layer 300 can be obtained by coating using a micro-dimpled coating method.

[0055] In order to ensure that the external anti-glare particles 301 can protrude from the outer surface of the high refractive index anti-glare coating 300, the internal anti-glare high-refractive index particles 302 can be dispersed inside the high refractive index anti-glare coating 300. In one embodiment, the external anti-glare particles 301 can be silica particles with a particle size of 3 to 4 μm, and the internal anti-glare high-refractive index particles 302 can be one or a combination of aluminum oxide particles and zirconium oxide particles. The particle size of the aluminum oxide particles and zirconium oxide particles is 100 to 300 nm.

[0056] Since the silica particles can be dispersed on the surface of the high refractive index anti-glare coating 300, the protruding size is at the micron level, while the thickness of the low refractive index coating 400 is at the nanometer level which is not enough to fill the depressions between the silica particles, thus ensuring that the final product still has a certain external haze, thereby ensuring the anti-glare performance of the film.

[0057] In addition, since the particle size of aluminum oxide and zirconium oxide is at the nanometer level, and the thickness of the high refractive index anti-glare coating 300 is 3 to 4 μm, these two high refractive index particles are usually wrapped in the coating, thus providing internal haze of the anti-glare coating.

[0058] In addition, the ratio of the added external anti-glare particles 301 and the internal anti-glare high-refractive particles 302 has a great influence on the anti-glare effect of the final film. Generally speaking, in order to ensure the anti-glare performance of the film, it is necessary to increase the external haze of the film as much as possible, but in order to improve the refractive index and hardness of the anti-glare film, a certain proportion of internal haze is also required to match. The present application controls the ratio of the two to ensure that the external haze and internal haze of the final film are in a reasonable ratio to ensure the anti-glare performance of the final film.

[0059] The beneficial effects of the technical solution of the present application are further elaborated in detail below in conjunction with specific embodiments.

[0060] Embodiment 1:

[0061] An anti-glare and low-reflection film comprises a substrate layer, a high-refractive index pre-coating layer, a high-refractive index anti-glare coating layer and a low-refractive index coating layer which are stacked in sequence;

[0062] Among them, the substrate layer is a 60μm TAC substrate;

[0063] The thickness of the high refractive index pre-coating layer is 30 nm, and the coating solution includes the following components by weight: 30 parts of methacryloxysilane hydrolyzed polymer, 30 parts of water-based polyurethane, 5 parts of benzophenone photoinitiator, 10 parts of dodecyl dimethyl ammonium chloride wetting agent, 15 parts of butanone, and 10 parts of propylene glycol methyl ether;

[0064] The thickness of the high refractive index anti-glare coating is 4 μm, and the coating solution includes the following components by weight: 30 parts of epoxy acrylic resin with a functionality of 7, 8 parts of silicon dioxide particles with a particle size of 3 μm, 2 parts of aluminum oxide particles with a particle size of 150 nm, 5 parts of benzophenone photoinitiator, 5 parts of polyether modified silane leveling agent, 20 parts of butanone, and 30 parts of propylene glycol methyl ether;

[0065] The thickness of the low refractive index coating is 95nm, and the coating solution includes the following components in parts by weight: 20 parts of fluorine-containing multifunctional (meth) acrylic resin, 15 parts of multifunctional acrylate monomer, 5 parts of benzophenone photoinitiator, 10 parts of hollow silica particles, 5 parts of polyether modified silane leveling agent, and 45 parts of methyl isobutyl ketone.

[0066] Embodiment 2:

[0067] An anti-glare and low-reflection film comprises a substrate layer, a high-refractive index pre-coating layer, a high-refractive index anti-glare coating layer and a low-refractive index coating layer which are stacked in sequence;

[0068] Among them, the substrate layer is 80μm TAC substrate;

[0069] The thickness of the high refractive index pre-coating layer is 50 nm, and the coating solution includes the following components by weight: 25 parts of methacryloxysilane hydrolyzed polymer, 25 parts of water-based polyurethane, 5 parts of benzophenone photoinitiator, 10 parts of dodecyl dimethyl ammonium chloride wetting agent, 25 parts of butanone, and 10 parts of propylene glycol methyl ether;

[0070] The thickness of the high refractive index anti-glare coating is 5 μm, and the coating solution includes the following components by weight: 30 parts of epoxy acrylic resin with a functionality of 10, 9 parts of silicon dioxide particles with a particle size of 3.5 μm, 1 part of zirconium oxide particles with a particle size of 200 nm, 5 parts of benzophenone photoinitiator, 5 parts of polyether modified silane leveling agent, 20 parts of butanone, and 10 parts of propylene glycol methyl ether;

[0071] The thickness of the low refractive index coating is 100 nm, and the coating solution includes the following components in parts by weight: 25 parts of fluorine-containing multifunctional (meth) acrylic resin, 15 parts of multifunctional acrylate monomer, 5 parts of benzophenone photoinitiator, 15 parts of hollow silica particles, 5 parts of polyether modified silane leveling agent, and 35 parts of methyl isobutyl ketone.

[0072] Embodiment 3:

[0073] An anti-glare and low-reflection film comprises a substrate layer, a high-refractive index pre-coating layer, a high-refractive index anti-glare coating layer and a low-refractive index coating layer which are stacked in sequence;

[0074] Among them, the substrate layer is 80μm TAC substrate;

[0075] The thickness of the high refractive index pre-coating layer is 60 nm, and the coating solution includes the following components by weight: 20 parts of methacryloxysilane hydrolyzed polymer, 20 parts of water-based polyurethane, 10 parts of benzophenone photoinitiator, 20 parts of dodecyl dimethyl ammonium chloride wetting agent, 5 parts of butanone, and 5 parts of propylene glycol methyl ether;

[0076] The thickness of the high refractive index anti-glare coating is 6 μm, and the coating solution includes the following components by weight: 40 parts of epoxy acrylic resin with a functionality of 10, 7 parts of silicon dioxide particles with a particle size of 3.5 μm, 3 parts of zirconium oxide particles with a particle size of 200 nm, 10 parts of benzophenone photoinitiator, 10 parts of polyether modified silane leveling agent, 15 parts of butanone, and 10 parts of propylene glycol methyl ether;

[0077] The thickness of the low refractive index coating is 105 nm, and the coating solution includes the following components in parts by weight: 30 parts of fluorine-containing multifunctional (meth) acrylic resin, 20 parts of multifunctional acrylate monomer, 10 parts of benzophenone photoinitiator, 10 parts of hollow silica particles, 10 parts of polyether modified silane leveling agent, and 25 parts of methyl isobutyl ketone.

[0078] Comparative Example 1:

[0079] An anti-glare and low-reflection film comprises a substrate layer, an anti-glare coating layer and a low-refractive index coating layer which are stacked in sequence;

[0080] Among them, the substrate layer is 80μm TAC substrate;

[0081] The thickness of the anti-glare coating is 4 μm, and the coating solution includes the following components by weight: 30 parts of epoxy acrylic resin with a functionality of 10, 10 parts of silica particles with a particle size of 4 μm, 5 parts of benzophenone photoinitiator, 5 parts of polyether modified silane leveling agent, 10 parts of butanone, and 30 parts of propylene glycol methyl ether;

[0082] The thickness of the low refractive index coating is 105 nm, and the coating solution includes the following components in parts by weight: 20 parts of fluorine-containing multifunctional (meth) acrylic resin, 15 parts of multifunctional acrylate monomer, 5 parts of benzophenone photoinitiator, 10 parts of hollow silica particles, 5 parts of polyether modified silane leveling agent, and 45 parts of methyl isobutyl ketone.

[0083] Effect example 1:

[0084] The high refractive index anti-glare coating surface and the anti-glare low reflection film surface of Example 1 were characterized and analyzed respectively, and the results were obtained. Figure 2 .

[0085] See also Figure 2 , Figure 2 1 and 2 are SEM images of the surface of the high refractive index anti-glare coating and the surface of the anti-glare low-reflection film of Example 1, wherein a is a surface morphology image of the high refractive index anti-glare coating, and b is a surface morphology image of the anti-glare low-reflection film.

[0086] like Figure 2 As shown in a, when the low refractive index coating is not applied, a large number of protruding structures exist on the surface of the high refractive index anti-glare coating, and the protruding structures are silica particles protruding from the surface; Figure 2 As shown in b, after the low refractive index coating is applied, a large number of protruding structures are still visible, indicating that the low refractive index coating fails to fill the depressions between the silica particles, thereby improving the external haze and anti-glare performance of the film.

[0087] Effect Example 2:

[0088] The reflectivity, total haze, external haze and internal haze of the films of Examples 1, 2 and Comparative Example 1 were measured using a haze meter and a reflectivity meter, respectively. The external haze, internal haze and total haze of the high refractive index anti-glare coating of Example 1 were also measured. The following table data was obtained:

[0089] Group Reflectivity External haze Internal haze Total haze Example 1 1.39％ 8.26％ 2.06％ 10.32％ Example 2 1.26％ 13.12％ 1.46％ 14.58％ Comparative Example 1 2.65％ 12.67％ 0.16％ 12.83％

[0090] As shown in the above data, the reflectivity of the films of Examples 1 and 2 are both lower than 1.5%, among which the reflectivity of Example 2 reaches 1.26%, while the reflectivity of the conventional anti-glare low-reflection film of Comparative Example 1 reaches 2.65%. This is mainly because the anti-glare coating of Comparative Example 1 lacks internal anti-glare high-refractive index particles, and the anti-glare coating and the low-refractive index coating are difficult to cooperate to form a low-reflective structure, which affects the reflectivity of the film.

[0091] The total haze of Examples 1 and 2 reaches more than 10%, and both the external haze and the internal haze are relatively high, with a suitable ratio to ensure the anti-glare effect; the total haze of Comparative Example 1 reaches 12.83%, but the internal haze is too low, which affects the overall anti-glare effect.

[0092] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0093] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anti-glare low-reflection film, characterized in that: It comprises a substrate layer, a high refractive index pre-coating layer, a high refractive index anti-glare coating layer and a low refractive index coating layer which are stacked in sequence; The absolute value of the difference in refractive index between the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is 0 to 0.02, and the refractive index of the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is greater than that of the substrate layer, and the refractive index of the substrate layer is greater than that of the low refractive index coating layer; The coating liquid of the high refractive index anti-glare coating comprises external anti-glare particles and internal anti-glare high-refractive index particles, wherein the external anti-glare particles protrude from the side of the high refractive index anti-glare coating away from the substrate layer so that the outer surface of the low refractive index coating forms an uneven external anti-glare surface, and the internal anti-glare high-refractive index particles are distributed inside the high refractive index anti-glare coating, and the weight ratio of the external anti-glare particles to the internal anti-glare high-refractive index particles is (7-9):(1-3).

2. The anti-glare and low-reflection film according to claim 1, characterized in that: The refractive index of the high refractive index pre-coating layer and the high refractive index anti-glare coating layer is 1.63-1.68, the refractive index of the low refractive index coating layer is 1.33-1.4, and the refractive index of the substrate layer is 1.47-1.

55.

3. The anti-glare and low-reflection film according to claim 2, characterized in that: The total haze A of the anti-glare low-reflection film satisfies the following formula: A≥85%B, wherein B is the total haze of the anti-glare low-reflection film after removing the low-refractive index coating.

4. The anti-glare and low-reflection film according to claim 2, characterized in that: The thickness of the high refractive index pre-coating layer is 30-60 nm, and the coating liquid of the high refractive index pre-coating layer comprises the following components in parts by weight: 20-30 parts of hydrolyzed polymer, 20-30 parts of waterborne polyurethane, 5-10 parts of photoinitiator, 10-20 parts of wetting agent, and 10-35 parts of organic solvent.

5. The anti-glare and low-reflection film according to claim 4, characterized in that: The hydrolyzed polymer includes a methacryloxysilane hydrolyzed polymer, and the waterborne polyurethane includes waterborne polyurethane.

6. The anti-glare and low-reflection film according to claim 2, characterized in that: The thickness of the high refractive index anti-glare coating is 4 to 6 μm, and the coating solution of the high refractive index anti-glare coating comprises the following components in parts by weight: 30-40 parts of epoxy acrylic resin, 5-10 parts of external anti-glare particles, 1-5 parts of internal anti-glare high-refractive particles, 5-10 parts of photoinitiator, 5-10 parts of leveling agent, and 25-40 parts of organic solvent.

7. The anti-glare and low-reflection film according to claim 6, characterized in that: The functionality of the epoxy acrylic resin is 5-10.

8. The anti-glare and low-reflection film according to claim 1, characterized in that: The external anti-glare particles are silicon dioxide particles with a particle size of 3 to 4 μm, and the internal anti-glare high-refractive particles are one or a combination of aluminum oxide particles and zirconium oxide particles, and the particle size of the aluminum oxide particles and zirconium oxide particles is 100 to 300 nm.

9. The anti-glare and low-reflection film according to claim 2, characterized in that: The thickness of the low refractive index coating is 95-105 nm, and the coating solution of the low refractive index coating comprises the following components in parts by weight: 20-30 parts of fluorine-containing multifunctional (meth) acrylic resin, 10-20 parts of multifunctional acrylate monomer, 5-10 parts of photoinitiator, 10-15 parts of hollow silica particles, 5-10 parts of leveling agent, and 25-45 parts of organic solvent.

10. The anti-glare and low-reflection film according to claim 1, characterized in that: The high refractive index pre-coating layer and the high refractive index anti-glare coating layer are obtained by coating using a micro-concave coating method.

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