AR film and preparation method thereof

Abstract

The invention discloses an AR film and a preparation method thereof. The AR film comprises a surface film layer group, an AR use layer group and a bottom film layer which are sequentially laminated, the AR use layer group comprises an AR coating group, a hardened coating, a base material layer, a colorful coating and a pressure-sensitive adhesive layer which are attached in sequence; the AR coating group comprises an AF coating and a functional coating, and the functional coating comprises one or a combination of more of a silicon dioxide coating, a niobium pentoxide coating and a silicon oxide coating; according to the invention, the AR coating group and the colorful coating are reasonably arranged, and on the basis of having the anti-reflection and anti-reflection functions of a traditional AR film, the visual effect of the AR material is enhanced by utilizing the optical performance of the colorful coating and having the light arrangement polarization function, so that the overall color phenomenon looks more uniform and gorgeous, the visual feeling of consumers is improved, and the user experience is further improved. According to the preparation method provided by the invention, the AR film with good anti-reflection and anti-reflection effects and a good visual effect can be rapidly and stably prepared, and wide popularization and application are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of display application technology, and in particular to an AR film and a preparation method thereof. Background Art

[0002] AR film, commonly known as anti-reflection film, can be applied to the display screen of electronic products to effectively reduce light reflection and achieve a higher transmittance effect. It has been widely used in new high-end mobile phones, computers, cars, rearview mirrors and other display fields.

[0003] The existing AR films on the market are generally applied to the screen, and will show a rainbow effect due to the uniformity of the thickness of the AR coating. The overall visual effect may be bluish, purple or reddish, and the color stability is insufficient. The first intuitive feeling is not very ideal, which affects the user experience. Summary of the invention

[0004] In view of the above-mentioned deficiencies, one of the purposes of the present invention is to provide an AR film with reasonable structural design, which can increase transmittance and reduce reflection and has good visual effect.

[0005] A second object of the present invention is to provide a method for preparing an AR film.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] An AR film comprises a mask layer group, an AR use layer group and a bottom film layer which are sequentially laminated from top to bottom; the AR use layer group comprises an AR coating group, a hard coating, a substrate layer, a colorful coating and a pressure-sensitive adhesive layer which are sequentially laminated from top to bottom; the AR coating group comprises an AF coating and a functional coating laminated on the lower surface of the AF coating, the functional coating comprising one or more combinations of a silicon dioxide coating, a niobium pentoxide coating and a silicon oxide coating.

[0008] As a preferred embodiment of the present invention, the mask layer group includes a polyester film and a low transfer adhesive layer attached to the lower surface of the polyester film, which is convenient for protecting the AR coating group before use by consumers without affecting its own smooth feel.

[0009] As a preferred solution of the present invention, the base film layer is a non-silicone release film, a fluorine release film or a silicone oil release film with a thickness of 50 to 100 microns.

[0010] As a preferred solution of the present invention, the hard coating is an acrylic resin coating with a thickness of 1 to 10 microns.

[0011] As a preferred solution of the present invention, the substrate layer is a polyester film or a cellulose triacetate film with a thickness of 6 to 250 microns.

[0012] As a preferred embodiment of the present invention, the colorful coating is a liquid crystal layer with a thickness of 1000 to 2000 nanometers, preferably a liquid crystal with a main reflection band of 365nm to 415nm, which can present more brilliant colors, enhance the color stability of the AR film itself, and bring obvious visual sensory differences.

[0013] As a preferred solution of the present invention, the pressure-sensitive adhesive layer is a silicone pressure-sensitive adhesive, acrylic adhesive or OCA with a thickness of 10 to 50 microns.

[0014] A method for preparing the AR film comprises the following steps:

[0015] (1) applying acrylic resin on the upper surface of the substrate layer to form a hard coating;

[0016] (2) performing electroplating, vacuum sputtering or magnetron sputtering treatment on the surface of the hard coating to form an AR coating group;

[0017] (3) coating liquid crystal on the lower surface of the substrate layer to form a colorful coating;

[0018] (4) coating the colorful coating with silicone pressure-sensitive adhesive, acrylic adhesive or OCA to form a pressure-sensitive adhesive layer;

[0019] (5) Laminating the base film layer on the pressure-sensitive adhesive layer;

[0020] (6) coating a low transfer adhesive on a polyester film to form a low transfer adhesive layer, and then laminating the low transfer adhesive layer on the AF coating of the AR coating group to obtain an AR film product.

[0021] As a preferred embodiment of the present invention, in step (4), the colorful coating layer uses liquid crystal with a main reflection band of 365nm to 415nm, and a micro-concave roller is used to coat the liquid crystal on the lower surface of the substrate layer. The thickness of the colorful coating layer is 100 to 2000nm.

[0022] As a preferred embodiment of the present invention, in step (1), after coating the upper surface of the substrate layer with acrylic resin, the solvent is dried at 50-100°C for 1-3 minutes, and then cured by UVA band ultraviolet light with a curing energy of 200-2000 mJ / cm 2 .

[0023] The beneficial effects of the present invention are as follows: the present invention has an ingenious structural design, and is reasonably provided with an AR coating group and a colorful coating. On the basis of having the anti-reflection and anti-reflection functions of the traditional AR film, the optical properties of the colorful coating are utilized, and the light arrangement and polarization function is provided, thereby enhancing the visual effect of the AR material, making the overall color phenomenon look more uniform and gorgeous, enhancing the intuitive feeling of consumers, and thus improving the user experience. The preparation method provided by the present invention can quickly and stably prepare an AR film with good anti-reflection and anti-reflection effects and good visual effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the die-cutting structure of the PET substrate layer in the present invention. DETAILED DESCRIPTION

[0026] Example 1: See Figure 1 , an embodiment of the present invention provides an AR film, which includes a mask layer group 1, an AR use layer group 2 and a bottom film layer 3 which are sequentially laminated from top to bottom;

[0027] The mask layer group 1 includes a polyester film 11 and a low transfer adhesive layer 12 attached to the lower surface of the polyester film 11. It is convenient to protect the AR coating group before consumers use it without affecting its own smooth feel.

[0028] The AR layer group 2 includes an AR coating group 21, a hard coating 22, a substrate layer 23, a colorful coating 24 and a pressure-sensitive adhesive layer 25 which are sequentially attached from top to bottom; the AR coating group 21 includes an AF coating 211 and a functional coating 212 attached to the lower surface of the AF coating 211, and the functional coating 212 includes one or more combinations of a silica coating, a niobium pentoxide coating and a silicon oxide coating, that is, the number of layers of the AR coating group 21 can be a two- to six-layer structure, as long as the AF coating 211 is kept at the top layer, and the remaining functional coatings 212, such as the silica coating, the niobium pentoxide coating and the silicon oxide coating, can be randomly arranged or increased or decreased to determine the reflectivity effect of the AR material.

[0029] The hard coating 22 is preferably an acrylic resin coating with a thickness of 1 to 10 microns, preferably 2 to 4 microns, and the surface energy requirement of the resin is relatively low, with certain hydrophilicity and lipophilicity, and the water drop angle test needs to be below 90°.

[0030] The substrate layer 23 is a polyester film or a triacetyl cellulose film with a thickness of 6 to 250 microns, the optical efficiency is required to be above 92%, and the haze is required to be below 2%.

[0031] The colorful coating 24 is preferably a liquid crystal layer with a thickness of 1000 to 2000 nanometers, preferably a liquid crystal with a main reflection band of 365nm to 415nm, which can present more brilliant colors, enhance the color stability of the AR film itself, and bring obvious visual sensory differences.

[0032] The pressure-sensitive adhesive layer 25 is a silicone pressure-sensitive adhesive, acrylic adhesive or OCA with a thickness of 10 to 50 microns, and preferably a thickness of 20 to 40 microns.

[0033] The bottom film layer 3 is a non-silicone release film, a fluorine release film or a silicone release film with a thickness of 50 to 100 microns, which is matched accordingly to the pressure-sensitive adhesive layer 25, and the thickness is preferably 50 to 70 microns.

[0034] A method for preparing the AR film comprises the following steps:

[0035] (1) An acrylic resin is coated on the upper surface of the substrate layer 23, and then the solvent is dried at 50 to 100° C. for 1 to 3 minutes, and then cured by UVA-band ultraviolet light with a curing energy of 200 to 2000 mJ / cm 2 . Forming a hard coating layer 22;

[0036] (2) performing electroplating, vacuum sputtering or magnetron sputtering on the surface of the hard coating layer 22 to form an AR coating group 21;

[0037] (3) coating the bottom surface of the substrate layer 23 with liquid crystal to form a colorful coating layer 24;

[0038] (4) coating the colorful coating 24 with silicone pressure-sensitive adhesive, acrylic adhesive or OCA to form a pressure-sensitive adhesive layer 25;

[0039] (5) Laminating the base film layer 3 on the pressure-sensitive adhesive layer 25;

[0040] (6) A low transfer adhesive is coated on the polyester film 11 to form a low transfer adhesive layer 12, and then the low transfer adhesive layer 12 is laminated on the AF coating 211 of the AR coating group 21 to obtain an AR film product.

[0041] Example 2: This embodiment of the present invention provides an AR film and a preparation method thereof, which is basically the same as Example 1, except that:

[0042] (1) A hard coating layer 22 is applied on the upper surface of a polyester film having a thickness of 80 μm using a micro-concave roller, and then subjected to solvent drying treatment at 80°C for 1.5 min, and then subjected to light curing using a 365 nm high pressure mercury lamp. The curing energy is 1000 mJ / cm 2 The thickness of the hard coating 22 is 2 microns, the water drop angle is 80°, and the dyne value is above 32.

[0043] (2) An AR coating group 21 is coated on the surface of the hard coating 22 by magnetron sputtering. The AR coating group 21 includes a silicon dioxide coating, a niobium pentoxide coating, and an AF coating 211 which are sequentially coated. The thickness of each layer is 120 nanometers.

[0044] (3) A layer of colorful coating 24 with a main wavelength of 365 nm is coated on the lower surface of the polyester film by a micro-concave roller, wherein the main component of the colorful coating 24 is liquid crystal. The solvent is dried at 100°C for 1.5 minutes, and then light-cured by a 365 nm high-pressure mercury lamp with a curing energy of 1000 mJ / cm 2 , the thickness of the liquid crystal coating is 1000nm, and a colorful coating 24 is obtained.

[0045] (4) A layer of silicone pressure-sensitive adhesive with a thickness of 30 μm, a steel plate viscosity of 400 g / inch, and an AF viscosity of 20 g / inch is applied on the surface of the colorful coating 24 through a slit, and a layer of fluorine release film with a thickness of 50 μm is attached.

[0046] (5) A layer of low-viscosity acrylic glue is coated on the lower surface of the polyester film 11 through a slit, and baked at 100° C. for 4 minutes. After curing, a low-transfer adhesive layer 12 is formed, and then attached to the AF coating 211 of the AR coating group 21. The viscosity of the low-viscosity acrylic glue is 1-3 g / inch, and the thickness is 15 microns, and an AR film product is obtained.

[0047] After testing, the reflectivity of the above product is 3%, the color is uniform when viewed from the whole surface, purple-red when viewed from the front, and the color is uniform without color difference. The black-transparent effect is obvious when viewed from the side at an angle of 45° or more.

[0048] Example 3: This embodiment of the present invention provides an AR film and a preparation method thereof, which is basically the same as Example 1, except that:

[0049] (1) A layer of hard coating 22 is applied on the upper surface of a polyester film having a thickness of 100 μm using a micro-concave roller, and then the film is subjected to solvent drying at 90°C for 3 min, and then cured by light using a 380 nm high pressure mercury lamp. The curing energy is 1200 mJ / cm 2 , the thickness of the hard coating layer 22 is 3 microns.

[0050] (2) An AR coating group 21 is coated on the surface of the hard coating 22 by magnetron sputtering. The AR coating group 21 includes a silicon dioxide coating, a niobium pentoxide coating, a silicon dioxide coating, a niobium pentoxide coating, a silicon oxide coating, and an AF coating 211, each layer having a thickness of 130 nanometers.

[0051] (3) A layer of colorful coating 24 with a main wavelength of 415 nm is coated on the lower surface of the polyester film by a micro-concave roller, wherein the main component of the colorful coating 24 is liquid crystal. The solvent is dried at 100°C for 2 minutes, and then light-cured by a 380nm high-pressure mercury lamp with a curing energy of 1200mJ / cm 2 , the thickness of the liquid crystal coating is 1200nm, and a colorful coating 24 is obtained.

[0052] (4) A layer of silicone pressure-sensitive adhesive with a thickness of 20 μm is coated on the surface of the colorful coating 24 through a slit, and a layer of fluorine release film with a thickness of 70 μm is attached.

[0053] (5) A layer of low-viscosity acrylic glue is coated on the lower surface of the polyester film through a slit, and a low-transfer adhesive layer 12 is formed after curing, which is then attached to the AF coating 211 of the AR coating group 21 to obtain an AR film product.

[0054] After testing, the reflectivity of the above product is 2%. When viewed from the front, the color is uniform, showing blue, and there is no color difference. When viewed from the side at an angle of 45°, the black-transparent effect is obvious, and it has a purple-red color.

[0055] In general, the AR film product of the present invention has a good anti-reflection and anti-transmission effect, and has a light arrangement and polarization function, which can enhance the visual effect of the AR material, making the overall color phenomenon look more uniform and gorgeous, and the consumer's intuitive feeling is obvious, and the user experience effect is good.

[0056] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention belongs can also change and modify the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. Other protective films that are the same or similar to the above are all within the scope of protection of the present invention.

Claims

1. An AR film, characterized in that: It includes a mask layer group, an AR use layer group and a base film layer which are laminated in order from top to bottom; The AR use layer group includes an AR coating group, a hard coating layer, a substrate layer, a colorful coating layer and a pressure-sensitive adhesive layer which are laminated in order from top to bottom; The AR coating group includes an AF coating and a functional coating attached to the lower surface of the AF coating, and the functional coating includes one or more combinations of a silicon dioxide coating, a niobium pentoxide coating and a silicon oxide coating.

2. The AR film according to claim 1, characterized in that The facial mask layer group includes a polyester film and a low transfer adhesive layer attached to the lower surface of the polyester film.

3. The AR film according to claim 1, characterized in that: The bottom film layer is a non-silicon release film, a fluorine release film or a silicone oil release film with a thickness of 50 to 100 microns.

4. The AR film according to claim 1, characterized in that The hard coating is an acrylic resin coating with a thickness of 1 to 10 microns.

5. The AR film according to claim 1, characterized in that: The substrate layer is a polyester film or a triacetyl cellulose film with a thickness of 6 to 250 microns.

6. The AR film according to claim 1, characterized in that: The colorful coating is a liquid crystal layer with a thickness of 1000 to 2000 nanometers.

7. The AR film according to claim 1, characterized in that: The pressure-sensitive adhesive layer is organic silicon pressure-sensitive adhesive, acrylic adhesive or OCA with a thickness of 10 to 50 microns.

8. A method for preparing the AR film according to any one of claims 1 to 7, characterized in that: It includes the following steps: (1) applying acrylic resin on the upper surface of the substrate layer to form a hard coating; (2) performing electroplating, vacuum sputtering or magnetron sputtering treatment on the surface of the hard coating to form an AR coating group; (3) coating liquid crystal on the lower surface of the substrate layer to form a colorful coating; (4) coating the colorful coating with silicone pressure-sensitive adhesive, acrylic adhesive or OCA to form a pressure-sensitive adhesive layer; (5) Laminating the base film layer on the pressure-sensitive adhesive layer; (6) coating a low transfer adhesive on a polyester film to form a low transfer adhesive layer, and then laminating the low transfer adhesive layer on the AF coating of the AR coating group to obtain an AR film product.

9. The preparation method according to claim 8, characterized in that: In step (4), the colorful coating layer uses liquid crystal with a main reflection band of 365nm to 415nm, and a micro-concave roller is used to coat the liquid crystal on the lower surface of the substrate layer. The thickness of the colorful coating layer is 100 to 2000nm.

Images