Anti-dazzle module and preparation method and application thereof

Abstract

The invention relates to the technical field of optics, in particular to an anti-dazzle module and a preparation method and application thereof. The anti-dazzle module comprises an anti-dazzle lens, a display screen and at least one composite material layer, the composite material layer comprises an acrylate copolymer and a modified material in a mass ratio of (80-99.95): (0.05-20); the modified material comprises at least one of PMMA (polymethyl methacrylate), PC (polycarbonate), PVC (polyvinyl chloride), PET (polyethylene terephthalate), PS (polystyrene), PP (polypropylene), PE (polyethylene), silicate, crystal mineral and inorganic oxide; the refractive index difference between the modified material and the acrylate copolymer is 0.02 or above. The composite material layer is arranged between the display screen and the anti-dazzle lens, so that the light direction of display screen pixels can be changed, an original display screen regular pixel array is disrupted, the pixel grid effect is eliminated, an original grid array is disrupted, flash points are effectively weakened or eliminated, and the flash point problem is solved; meanwhile, indexes such as haze, glossiness and surface roughness of the anti-dazzle lens are not influenced.

Description

Technical Field

[0001] This invention relates to the field of optical technology, and more specifically, to an anti-glare module, its preparation method, and its application. Background Technology

[0002] Anti-glare AG glass features a surface with randomly distributed micron-level uneven structures formed through spraying or etching, which reduces the intensity of specular reflection. AG glass is widely used in high-resolution display applications such as smartphones, automotive infotainment screens, laptops, and medical monitors. Among these, the automotive sector, driven by the need for anti-glare in bright light environments, has become one of the fastest-growing markets for AG glass penetration.

[0003] However, when AG glass is superimposed on the regular pixel array of a high PPI (pixel density) display, random moiré stripes are formed at the optical level. The disordered microstructure of the anti-glare layer causes incident light to be scattered in multiple directions. Some light is randomly converged or dispersed, resulting in uneven local light intensity distribution, which manifests as local bright and dark alternating "flickering spots". This reduces image contrast and color reproduction, and the human eye can perceive obvious interference, especially when observing dynamically (such as when the viewing angle changes or the head moves).

[0004] Flash points limit the application of ultra-high-definition display devices, causing pixel edges to blur and resolution loss of up to 15%. Severe flash point conditions can cause fluctuations in light intensity and visual fatigue. Prolonged viewing of such screens can lead to frequent eye adjustments, resulting in increased intraocular pressure and visual strain, especially noticeable in automotive displays and VR devices.

[0005] To mitigate the impact of flash point issues, the industry currently has to consider the balance between haze and clarity when applying anti-glare glass. Medical displays and precision instrument screens typically require sacrificing some haze (<2%) to maintain high clarity (C% ≥ 90%) for low flash point treatment; while high haze solutions (haze > 3%) can reduce flash point, they result in a "soft focus" effect on the image, reducing text readability and making them suitable only for certain architectural curtain wall applications.

[0006] Meanwhile, current methods for mitigating the effects of flash point are also constrained by gloss and surface roughness. Reducing the effects of flash point requires controlling gloss to ≤80 GU and increasing surface roughness (Ra>0.8μm), but excessive roughness will reduce tactile smoothness and affect the user experience of consumer electronics products.

[0007] In view of this, the present invention is hereby proposed. Summary of the Invention

[0008] The primary objective of this invention is to provide an anti-glare module. The modified material in the composite material layer, at its refractive index interface with the acrylate copolymer, can diffuse and rearrange the light from each pixel of the display screen, eliminating the screen's own pixel grid effect, disrupting the original grid array, and eliminating the conditions for flash point generation. This invention addresses the fundamental principle of flash point generation by adjusting the structure of the anti-glare module. By changing the direction of light within the module, it effectively solves the flash point problem arising from the matching of the anti-glare lens and the display screen, without affecting the anti-glare lens's own haze, gloss, surface roughness, or other related indicators.

[0009] The second objective of this invention is to provide a method for preparing an anti-glare module. By setting a composite material layer between the display screen and the anti-glare lens, the light direction of the display screen pixels can be changed, the original regular pixel array of the display screen can be disrupted, the pixel grid effect can be eliminated, the original grid array can be disrupted, the flash point can be effectively reduced or eliminated, and the flash point problem can be solved. At the same time, it does not affect the haze, gloss, surface roughness and other indicators of the anti-glare lens itself.

[0010] A third objective of this invention is to provide applications of anti-glare modules in consumer electronics, automotive displays, medical displays, industrial production, and sports lighting.

[0011] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0012] The present invention first provides an anti-glare module, which includes an anti-glare lens, a display screen, and at least one composite material layer disposed between the anti-glare lens and the display screen; the composite material layer includes an acrylate copolymer and a modified material in a mass ratio of 80-99.95:0.05-20; wherein the modified material includes at least one of PMMA, PC, PVC, PET, PS, PP, PE, silicate, crystalline mineral and inorganic oxide; the refractive index difference between the modified material and the acrylate copolymer is greater than 0.02.

[0013] Furthermore, the particle size of the modified material is 0.01–500 μm.

[0014] Furthermore, the monomers forming the acrylate copolymer include at least one of hydroxyalkyl acrylate monomers, alkyl acrylate monomers, and acrylate monomers.

[0015] Furthermore, the composite material layer also includes an antioxidant, the mass of which is 0.05% to 2% of the sum of the masses of the acrylate copolymer and the modified material.

[0016] Furthermore, the composite material layer also includes a hygroscopic agent, the mass of which is 0.1% to 5% of the sum of the masses of the acrylate copolymer and the modified material.

[0017] Furthermore, the anti-glare module also includes at least one adhesive layer.

[0018] Furthermore, the adhesive layer is disposed between the composite material layer and the display screen; and / or, the adhesive layer is disposed between the composite material layer and the anti-glare lens; and / or, the adhesive layer is disposed between the composite material layers.

[0019] Furthermore, the anti-glare module also includes a display screen polarizer.

[0020] Furthermore, the display screen polarizer is disposed between the composite material layer and the anti-glare lens; and / or, the display screen polarizer is disposed between the composite material layer and the adhesive layer.

[0021] The present invention further provides a method for preparing the above-mentioned anti-glare module, comprising the following steps: combining an anti-glare lens, a display screen and a composite material layer.

[0022] Furthermore, the preparation method of the anti-glare module specifically includes: mixing the raw materials for the preparation of the composite material layer and coating them onto the surface of a substrate, then curing them to form a composite material layer; using a light release film to bond the composite material layer to obtain a composite structure layer; wherein, the substrate includes a PET release film and / or a PO release film; the curing method includes UV curing and / or thermal curing; then peeling off the substrate and the light release film from the composite structure layer, and attaching the anti-glare lens and the display screen to the two surfaces of the composite material layer respectively.

[0023] Furthermore, the method for preparing the anti-glare module specifically includes: using an adhesive to bond the anti-glare lens to the composite material layer, or the display screen to the composite material layer, to form an adhesive layer; wherein the adhesive includes at least one of OCA optical adhesive, double-sided tape, and liquid adhesive.

[0024] The present invention also provides applications of the above-mentioned anti-glare module in the fields of consumer electronics, automotive displays, medical displays, industrial production and sports lighting.

[0025] Compared with existing technologies, the beneficial effects of this invention are as follows: The anti-glare module provided by this invention, by setting a composite material layer with a specific chemical composition between the anti-glare lens and the display screen, allows the modified material in the composite material layer and the refractive index interface of the acrylate copolymer to diverge and rearrange the light from each pixel of the display screen, eliminating the pixel grid effect of the screen itself, disrupting the original grid array, and eliminating the conditions for the generation of flash points. This invention starts from the fundamental principle of flash point generation, adjusts the structure of the anti-glare module, and effectively solves the flash point problem that occurs when matching the anti-glare lens and the display screen by changing the direction of light inside the module, while not affecting the haze, gloss, surface roughness, and other related indicators of the anti-glare lens itself. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the first structure of the anti-glare module provided by the present invention.

[0028] Figure 2 This is a schematic diagram of a second structure of the anti-glare module provided by the present invention;

[0029] Figure 3 This is a schematic diagram of a third structure of the anti-glare module provided by the present invention;

[0030] Figure 4 This is a schematic diagram of the fourth structure of the anti-glare module provided by the present invention;

[0031] Figure 5 This is a schematic diagram of the fifth structure of the anti-glare module provided by the present invention;

[0032] Figure 6 This is a schematic diagram of the sixth structure of the anti-glare module provided by the present invention. Detailed Implementation

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0034] Unless otherwise specified, in this invention, terms such as "first aspect," "second aspect," and "third aspect" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," and "third" serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.

[0035] Unless otherwise specified, in this invention, "one or more" or "at least one" refers to any one, any two, or any two or more of the listed items. "Several" refers to any two or more.

[0036] In a first aspect, the present invention provides an anti-glare module with anti-flicker effect, comprising an anti-glare lens (also known as an anti-glare LENS), a display screen, and at least one composite material layer disposed between the anti-glare lens and the display screen. The composite material layer is at least one layer, and may be one, two, three, or more layers.

[0037] Figure 1 This is a schematic diagram of the first structure of an anti-glare module, which includes an anti-glare lens, a composite material layer, and a display screen arranged sequentially.

[0038] Understandably, the composite material layer can be located on the surface of the display screen, on the inner surface of the anti-glare lens, or attached to a separate film layer between the two or to a multilayer film between the two.

[0039] The composite material layer comprises an acrylate copolymer and a modifying material in a mass ratio of 80–99.95:0.05–20. The mass ratio of the acrylate copolymer to the modifying material can be 96:4, 94:6, 92:8, 90:10, or 88:12, but is not limited to these ratios.

[0040] The modified materials include at least one of PMMA (polymethyl methacrylate) particles, PC (polycarbonate) particles, PVC (polyvinyl chloride) particles, PET (polyethylene terephthalate) particles, PS (polystyrene) particles, PP (polypropylene) particles, PE (polyethylene) particles, silicate particles, crystalline mineral particles, and inorganic oxide particles, or two or more of these.

[0041] Among them, silicates include, for example, tremolite, beryllium silicate, transparent glaze, etc.; crystalline minerals include, for example, quartz, calcite, corundum, fluorite, etc.; inorganic oxides include, for example, aluminum oxide, magnesium oxide, zinc oxide, beryllium oxide, etc.; the present invention does not limit these.

[0042] Understandably, acrylate copolymers have a certain degree of viscosity, which allows them to be directly coated onto the surface of anti-glare lenses or displays after the composite modified material is applied, and then dried to form a composite material layer.

[0043] The refractive index difference between the modified material and the acrylate copolymer is greater than 0.02, for example, 0.02, 0.03, 0.05, 0.06, 0.08, 0.1, etc., but not limited to these. A refractive index difference of 0.02 or greater effectively refracts light, causing diffuse reflection of light within the composite material, thereby altering the pixel grid effect of the display screen. Preferably, the refractive index difference between the modified material and the acrylate copolymer is 0.02 to 3.5.

[0044] It is understandable that the refractive index of the modified material can be higher than that of the acrylate copolymer, or lower than that of the acrylate copolymer, as long as the difference between the two refractive indices is greater than or equal to 0.02. That is, the absolute value of the difference between the refractive indices of the modified material and the acrylate copolymer is ≥0.02.

[0045] The anti-glare module provided by this invention, by setting a composite material layer with a specific chemical composition between the anti-glare lens and the display screen, allows the modified material in the composite material layer and the refractive index interface of the acrylate copolymer to diverge and rearrange the light from each pixel of the display screen, eliminating the pixel grid effect of the screen itself, disrupting the original grid array, and eliminating the conditions for the generation of flash points. This invention starts from the fundamental principle of flash point generation, adjusts the structure of the anti-glare module, and by changing the direction of light within the module, can effectively solve the flash point problem that occurs when matching the anti-glare lens and the display screen, without affecting the haze, gloss, surface roughness, and other related indicators of the anti-glare lens itself.

[0046] Specifically, the composite material layer is used to alter the light direction of the display pixels, disrupting the original appearance of the display's regular pixel array. The optical treatment of the composite material layer causes diffuse reflection of light from the display, thus disrupting the pixel array to some extent. The acrylate copolymer in the composite material layer primarily acts as an adhesive and exhibits transparency. The modified materials in the composite material layer mainly cause diffuse reflection of light, also exhibiting transparency.

[0047] In some specific embodiments, the particle size of the modified material is 0.01–500 μm, including but not limited to point values ​​or ranges between any one of 0.01 μm, 0.05 μm, 0.1 μm, 0.5 μm, 1 μm, 3 μm, 5 μm, 8 μm, 10 μm, 30 μm, 50 μm, 80 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, and 500 μm. It is understood that the aforementioned particle size of 0.01–500 μm refers to the particle size distribution of the modified material being within the range of 0.01–500 μm, i.e., the maximum and minimum particle sizes are within the range of 0.01–500 μm.

[0048] To increase the uniformity of optical effects, the modified materials can be selected from a variety of particle sizes to form composite materials. For example, modified materials with particle sizes of 0.01–0.5 μm and 1–10 μm can be used; or, modified materials with particle sizes of 50–80 μm and 200–300 μm can be used, and the selection is not limited to these.

[0049] In some specific implementations, the modified material can be microscopically uniformly distributed particles, or it can be a stack of one or more layers of particles.

[0050] In some specific embodiments, the monomers forming the acrylate copolymer include at least one of hydroxyalkyl acrylate monomers, alkyl acrylate monomers, and acrylate monomers.

[0051] In some specific embodiments, the acrylate copolymer is obtained by mixing the above monomers and a UV crosslinking agent (as a photoinitiator) and then subjecting the mixture to a crosslinking reaction under light irradiation.

[0052] In some specific embodiments, the hydroxyalkyl acrylate monomer can be one or more of the following (accounting for 98% wt in the copolymer): hydroxyethyl acrylate (HEA), hydroxypropyl acrylate (HPA), hydroxybutyl acrylate (HBA), trimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PET3A), etc.

[0053] In some specific embodiments, the UV crosslinking agent can be one or more of the following: TPO-2,4,6-trimethylbenzoyl-diphenylphosphine oxide, TPO-L2,4,6-trimethylbenzoylphenylphosphonate ethyl ester, IHT-PI9102-dimethylamino-2-benzyl-1-[4-(4-morpholino)phenyl]-1-butanone, MBF methyl benzoylcarboxylate, 11732-hydroxy-2-methyl-1-phenylpropanone, 1841-hydroxycyclohexylphenyl ketone, 6592-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone, or 9072-methyl-2-(4-morpholino)-1-[4-(methylthio)phenyl]-1-propanone, etc.

[0054] In some specific implementations, the amount (by mass) of the UV crosslinking agent added is 0.1% to 5% of the monomer mass.

[0055] In some specific embodiments, the composite material layer also includes an antioxidant. The antioxidant, acting as a chain transfer agent, enables the composite material layer to possess better anti-aging properties.

[0056] In some specific embodiments, the mass of the antioxidant is 0.05% to 2% of the sum of the mass of the acrylate copolymer and the modified material, for example, 0.05%, 0.1%, 0.3%, 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8% or 2%.

[0057] In some specific embodiments, the composite material layer also includes a hygroscopic agent. This hygroscopic agent enables the composite material layer to have better moisture absorption properties.

[0058] In some specific embodiments, the mass of the desiccant is 0.1% to 5% of the sum of the mass of the acrylate copolymer and the modified material, for example, 0.1%, 0.3%, 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, or 5%.

[0059] In some specific implementations, the anti-glare module also includes at least one adhesive layer.

[0060] In some specific embodiments, the adhesive layer is disposed between the composite material layer and the display screen; and / or, the adhesive layer is disposed between the composite material layer and the anti-glare lens; and / or, the adhesive layer is disposed between the composite material layers.

[0061] Figure 2 This is a schematic diagram of a second structure for an anti-glare module, which includes an anti-glare lens, a composite material layer, an adhesive layer, and a display screen arranged sequentially.

[0062] Figure 3This is a schematic diagram of a third structure for an anti-glare module, which includes an anti-glare lens, an adhesive layer, a composite material layer, and a display screen arranged sequentially.

[0063] Figure 4 This is a schematic diagram of the fourth structure of the anti-glare module. The anti-glare module includes an anti-glare lens, an adhesive layer, a composite material layer, an adhesive layer, and a display screen arranged in sequence (i.e., the anti-glare module contains two adhesive layers).

[0064] Figure 5 This is a schematic diagram of the fifth structure of the anti-glare module. The anti-glare module includes an anti-glare lens, a composite material layer, an adhesive layer, another composite material layer, and a display screen arranged in sequence (i.e., the anti-glare module contains two composite material layers).

[0065] In some specific implementations, the anti-glare module also includes a display screen polarizer. The polarizer is primarily used for controlling the emitted light from the display screen.

[0066] In some specific embodiments, the display screen polarizer is disposed between the composite material layer and the anti-glare lens; and / or, the display screen polarizer is disposed between the composite material layer and the adhesive layer.

[0067] Figure 6 This is a schematic diagram of the sixth structure of the anti-glare module. The anti-glare module includes an anti-glare lens, an adhesive layer, a display screen polarizer, a composite material layer, and a display screen arranged in sequence.

[0068] Secondly, the present invention provides a method for preparing the above-mentioned anti-glare module, comprising the following steps: combining an anti-glare lens, a display screen and a composite material layer.

[0069] The method for preparing the anti-glare module provided by the present invention can change the light direction of the display screen pixels by setting a composite material layer between the display screen and the anti-glare lens, disrupt the original regular pixel array of the display screen, eliminate the pixel grid effect, and effectively reduce or eliminate the flash point by disrupting the original grid array, thus completely solving the flash point problem, while not affecting the haze, gloss, surface roughness and other indicators of the anti-glare lens itself.

[0070] In some specific implementations, the composite material layer can be first attached to the surface of the display screen, and then the anti-glare lens can be attached to the other surface of the composite material layer (i.e., the surface away from the display screen). Alternatively, the composite material layer can be first attached to the inner surface of the anti-glare lens, and then the display screen can be attached to the other surface of the composite material layer (i.e., the surface away from the anti-glare lens).

[0071] In some specific embodiments, the preparation method of the anti-glare module includes: uniformly mixing the raw materials for the composite material layer and coating them onto the surface of a substrate, followed by semi-curing to form a composite material layer (viscosity range of 200cps to 3000cps at room temperature); then bonding a light release film to the composite material layer to obtain a composite structure layer with a sandwich structure of substrate-composite material layer-light release film. Then, the substrate and light release film in the composite structure layer are peeled off, and anti-glare lenses and a display screen are attached to the two surfaces of the composite material layer, respectively.

[0072] The substrate includes PET release film and / or PO release film.

[0073] Curing methods include UV curing and / or thermal curing.

[0074] Light release film is a type of release film that refers to release films with relatively weak release force.

[0075] In some specific embodiments, the preparation method of the anti-glare module includes: uniformly mixing the raw materials for the composite material layer and coating them into a layer, followed by heat curing to obtain the composite material layer. Then, using an adhesive, the anti-glare lens is bonded to the composite material layer, or the display screen is bonded to the composite material layer, to form an adhesive layer.

[0076] The adhesive includes at least one of OCA optical adhesive, double-sided tape, and liquid adhesive. Liquid adhesive includes, but is not limited to, this OCA adhesive, also known as liquid optical adhesive.

[0077] Thirdly, the present invention provides applications of the above-mentioned anti-glare module in consumer electronics (such as smartphones and laptops), automotive displays (such as automotive central control screens), medical displays (such as medical monitors), industrial production (such as adapting to Mini LED backlight technology by improving color gamut and brightness), and sports lighting (such as reducing glare interference in athletes' field of vision through high-precision light distribution and asymmetric lens design).

[0078] Specifically, the aforementioned anti-glare module can be applied to application scenarios of multi-layer composite films with anti-glare effects, such as industrial control equipment panels with anti-glare effects, commercial display systems with anti-glare effects, such as display cases and shop windows, vehicle instruments and central control systems with anti-glare effects, and railcar windows with anti-glare effects, but is not limited to these.

[0079] The embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of the invention. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer are followed. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0080] Example 1

[0081] The anti-glare module provided in this embodiment includes an anti-glare lens, a composite material layer, and a display screen arranged sequentially. See the schematic diagram below. Figure 1 As shown, the composite material layer consists of an acrylate copolymer and a modifying material in a mass ratio of 95:5. The modifying material is PMMA particles with a particle size ranging from 1 to 10 μm. The acrylate copolymer is prepared by mixing hydroxyalkyl acrylate monomer (hydroxyethyl acrylate) and a UV crosslinking agent (TPO, added at 2% of the monomer mass) and then subjecting them to a crosslinking reaction under light irradiation. The refractive index of the acrylate copolymer is 1.47, and the refractive index of the modifying material is 1.49, meaning the difference between their refractive indices is 0.02.

[0082] The method for preparing the anti-glare module provided in this embodiment includes the following steps: An acrylate copolymer and a modified material are mixed evenly and coated onto the surface of a substrate (PET release film), followed by UV semi-curing to form a composite material layer; then, a light release film is bonded to the composite material layer to obtain a composite structure layer with a sandwich structure of substrate-composite material layer-light release film. The substrate and light release film in the composite structure layer are then peeled off, and an anti-glare lens and a display screen are attached to both surfaces of the composite material layer respectively to obtain the anti-glare module.

[0083] Example 2

[0084] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that the composite material layer is composed of an acrylate copolymer and a modified material in a mass ratio of 88:12.

[0085] Example 3

[0086] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that the composite material layer is composed of an acrylate copolymer and a modified material in a mass ratio of 90:10.

[0087] Example 4

[0088] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that the composite material layer is composed of an acrylate copolymer and a modified material in a mass ratio of 92:8.

[0089] Example 5

[0090] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Example 1, except that the modified material is replaced with PC particles with a particle size range of 0.01 to 0.1 μm. The refractive index of the modified material is 1.59, which means that the refractive index of the modified material differs from that of the acrylate copolymer by 0.12.

[0091] Example 6

[0092] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that the modified material is replaced with PVC particles with a particle size range of 1-10 μm and PET particles with a particle size range of 100-200 μm, wherein the mass ratio of PVC particles to PET particles is 3:1. The refractive index of the modified material is 1.54, that is, the refractive index difference between the modified material and the acrylate copolymer is 0.07.

[0093] Example 7

[0094] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that the modified material is replaced with PS particles with a particle size range of 50-100 μm and PP particles with a particle size range of 300-400 μm, wherein the mass ratio of PS particles to PP particles is 1:1. The refractive indices of the modified material are 1.59 and 1.49, respectively, meaning that the refractive indices of the modified material and the acrylate copolymer differ by 0.12 and 0.02, respectively.

[0095] Example 8

[0096] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Example 1, except that the hydroxyalkyl acrylate monomer is replaced with an equal mass of alkyl acrylate monomer. The refractive index of the acrylate copolymer obtained by the alkyl acrylate monomer is 1.47, that is, the refractive index difference between the modified material and the acrylate copolymer is 0.02.

[0097] Example 9

[0098] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Example 1, except that the hydroxyalkyl acrylate monomer is replaced with an equal mass of acrylate monomer. The refractive index of the acrylate copolymer obtained by the acrylate monomer is 1.47, that is, the refractive index difference between the modified material and the acrylate copolymer is 0.02.

[0099] Example 10

[0100] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that: in addition to the acrylate copolymer and the modified material, the composite material layer also includes the antioxidant butylated hydroxytoluene (BHT) (the antioxidant is added during the raw material mixing process during preparation), wherein the mass of the antioxidant accounts for 1% of the sum of the mass of the acrylate copolymer and the modified material.

[0101] Example 11

[0102] The anti-glare module and its preparation method provided in this embodiment are basically the same as those in Embodiment 1, except that: in addition to the acrylate copolymer and the modified material, the composite material layer also includes the hygroscopic agent propylene glycol (an antioxidant is added during the raw material mixing process during preparation), wherein the mass of the hygroscopic agent accounts for 1% of the sum of the mass of the acrylate copolymer and the modified material.

[0103] Example 12

[0104] The anti-glare module provided in this embodiment includes an anti-glare lens, an adhesive layer, a composite material layer, an adhesive layer, and a display screen arranged sequentially. See the schematic diagram below. Figure 4 As shown. The composition of the composite material layer is the same as in Example 1.

[0105] The method for preparing the anti-glare module provided in this embodiment includes the following steps: The acrylate copolymer and the modified material are mixed evenly and coated into a layer, followed by heat curing to obtain a composite material layer. Then, OCA optical adhesive is used to bond the anti-glare lens, the composite material layer, and the display screen, followed by heat curing to obtain the anti-glare module.

[0106] Example 13

[0107] The anti-glare module provided in this embodiment includes an anti-glare lens, an adhesive layer, a display screen polarizer, an adhesive layer, a composite material layer, an adhesive layer, and a display screen arranged sequentially. The composition of the composite material layer is the same as in Embodiment 1.

[0108] The method for preparing the anti-glare module provided in this embodiment includes the following steps: The acrylate copolymer and the modified material are mixed evenly and then coated into a layer, followed by UV curing to obtain a composite material layer. Then, OCA optical adhesive is used to bond the anti-glare lens, the display polarizer, the composite material layer, and the display screen, followed by heat curing to obtain the anti-glare module.

[0109] Comparative Example 1

[0110] The anti-glare module and its preparation method provided in this comparative example are basically the same as those in Example 1, except that the composite material layer is composed of acrylate copolymer (i.e., no modified material is added).

[0111] Comparative Example 2

[0112] The anti-glare module and its preparation method provided in this comparative example are basically the same as those in Example 1, except that the composite material layer is composed of an acrylate copolymer and a modified material in a mass ratio of 40:60.

[0113] Comparative Example 3

[0114] The anti-glare module and its preparation method provided in this comparative example are basically the same as those in Example 1, except that the composite material layer is composed of an acrylate copolymer and a modified material in a mass ratio of 60:40.

[0115] Comparative Example 4

[0116] The anti-glare module and its preparation method provided in this comparative example are basically the same as those in Example 1, except that the particle size range of PMMA particles is replaced with 900-1000 μm.

[0117] Comparative Example 5

[0118] The anti-glare module and its preparation method provided in this comparative example are basically the same as those in Example 1, except that the refractive index of the acrylate copolymer is 1.47, the refractive index of the modified material PMMA particles is 1.48, and the refractive index difference is 0.01.

[0119] Experimental Example

[0120] The performance of the anti-glare modules prepared in each embodiment and each comparative example was tested (background screen 254 PPI), and the test results are shown in Table 1.

[0121] Table 1 Performance test results of each anti-glare module

[0122]

[0123]

[0124] As can be seen from Table 1, the anti-glare modules prepared in each embodiment use the optical matching interface between the composite material filled and modified blend and the acrylate copolymer to diffuse and rearrange the light of each pixel of the display screen, eliminate the pixel grid effect of the screen itself, disrupt the original grid array, eliminate the conditions for the generation of flash points, and the flash point values ​​are all less than 1%, which falls within the range invisible to the human eye. The flash points are effectively reduced or eliminated, while not affecting the lens haze, gloss and surface roughness.

[0125] In contrast, Comparative Example 1, without the addition of modified materials, resulted in light emitted from the display screen grid passing directly through the disordered microstructure of the anti-glare layer, causing multi-directional scattering. Some light was randomly converged or dispersed, resulting in uneven local light intensity distribution and severe flash point, with a flash point value reaching 3.194%.

[0126] In Comparative Examples 2 and 3, the unsuitable ratio of acrylate copolymer and modified material resulted in the screen's emitted light failing to effectively disrupt the pixel grid array when passing through the modified material, leading to no significant improvement in the flash point, with a flash point value of approximately 2%.

[0127] In Comparative Example 4, due to the unsuitable particle size of the modified material, the light emitted from the display screen could not effectively disrupt the pixel grid array when passing through the modified material, resulting in no significant improvement in the flash point situation.

[0128] In Comparative Example 5, because the refractive index difference between the modified material and the acrylate copolymer is less than 0.02, the diffuse reflection of the light emitted from the display screen is insufficient when it passes through the modified material. This fails to effectively eliminate the pixel grid effect of the screen, disrupts the original grid array, and does not significantly improve the flickering situation.

[0129] In summary, by setting a composite material layer between the display screen and the anti-glare lens, this invention can change the light direction of the display screen pixels, disrupt the original regular pixel array of the display screen, eliminate the pixel grid effect, and effectively reduce or eliminate flash points, thus solving the flash point problem, while not affecting the haze, gloss, surface roughness and other indicators of the anti-glare lens itself.

[0130] Although the present invention has been illustrated and described with specific embodiments, it should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, without departing from the spirit and scope of the present invention; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention; therefore, this means that all such substitutions and modifications that fall within the scope of the present invention are included in the appended claims.

Claims

1. An anti-glare module, characterized in that, It includes an anti-glare lens, a display screen, and at least one composite material layer disposed between the anti-glare lens and the display screen; The composite material layer comprises an acrylate copolymer and a modifying material in a mass ratio of 80–99.95:0.05–20; The modified material includes at least one of PMMA, PC, PVC, PET, PS, PP, PE, silicates, crystalline minerals, and inorganic oxides. The refractive index of the modified material differs from that of the acrylate copolymer by more than 0.

02.

2. The anti-glare module according to claim 1, characterized in that, The particle size of the modified material is 0.01–500 μm.

3. The anti-glare module according to claim 1, characterized in that, The monomers forming the acrylate copolymer include at least one of hydroxyalkyl acrylate monomers, alkyl acrylate monomers, and acrylate monomers.

4. The anti-glare module according to claim 1, characterized in that, The composite material layer also includes an antioxidant, the mass of which is 0.05% to 2% of the sum of the masses of the acrylate copolymer and the modified material.

5. The anti-glare module according to claim 1, characterized in that, The composite material layer also includes a hygroscopic agent, the mass of which is 0.1% to 5% of the sum of the masses of the acrylate copolymer and the modified material.

6. The anti-glare module according to any one of claims 1 to 5, characterized in that, The anti-glare module also includes at least one adhesive layer; The adhesive layer is disposed between the composite material layer and the display screen; and / or, the adhesive layer is disposed between the composite material layer and the anti-glare lens; And / or, the adhesive layer is disposed between the composite material layer and the composite material layer.

7. The anti-glare module according to claim 6, characterized in that, The anti-glare module also includes a display screen polarizer; The display screen polarizer is disposed between the composite material layer and the anti-glare lens; and / or, the display screen polarizer is disposed between the composite material layer and the adhesive layer.

8. The method for preparing the anti-glare module according to any one of claims 1 to 7, characterized in that, The process includes the following steps: bonding the anti-glare lens, the display screen, and the composite material layer.

9. The method for preparing the anti-glare module according to claim 8, characterized in that, At least one of the following conditions must be met: (1) The preparation method of the anti-glare module specifically includes: mixing the raw materials for the preparation of the composite material layer and coating them onto the surface of the substrate, curing them to form a composite material layer; using a light release film to bond the composite material layer to obtain a composite structure layer; wherein, the substrate includes a PET release film and / or a PO release film; the curing method includes UV curing and / or thermal curing; then peeling off the substrate and the light release film from the composite structure layer, and attaching the anti-glare lens and the display screen to the two surfaces of the composite material layer respectively; (2) The preparation method of the anti-glare module specifically includes: using an adhesive to bond the anti-glare lens to the composite material layer, or the display screen to the composite material layer, to form an adhesive layer; wherein the adhesive includes at least one of OCA optical adhesive, double-sided adhesive and liquid adhesive.

10. The application of the anti-glare module as described in any one of claims 1 to 7 in the fields of consumer electronics, automotive displays, medical displays, industrial production, and sports lighting.

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