ESG light curing adhesive, ESG anti-dazzle layer, ESG polarizer and preparation method thereof

Abstract

The invention relates to an ESG light curing adhesive, an ESG anti-dazzle layer, an ESG polarizer and a preparation method thereof. The ESG light curing adhesive is formed by polymerizing a PEG (Polyethylene Glycol) modified waterborne epoxy acrylate emulsion PEG-WEA through a photoinitiator. The formula of the ESG photocuring adhesive comprises the following components in parts by weight: 60 parts of bisphenol A epoxy resin, 20 parts of acrylic acid, 2-8 parts of polyethylene glycol, 1-3 parts of maleic anhydride, 0.05 part of tetrahexylammonium bromide, 0.5 part of N-N-dimethylaniline, 0.02 part of p-hydroxyanisole, 8-9 parts of triethylamine and 1 part of a cationic photoinitiator. According to the ESG photocuring adhesive formula designed by the invention, the use of an organic solvent is avoided, the hardness is high after curing, the adhesion force is strong, a microstructure formed by imprinting is stable, and the weather resistance of a material layer is good. The surface coarsening layer in the ESG polarizing plate designed by the invention is an ESG anti-dazzle layer formed after imprinting and curing, so that a traditional coarsening mode of dispersing tiny particles by using a solvent is avoided, the condition of solvent volatilization in the material is remarkably reduced, and the ESG polarizing plate can keep stable performance in a high-temperature and high-humidity environment.

Description

Technical Field

[0001] This invention relates to the field of polarizing plate technology, and in particular to ESG photocurable adhesive, ESG anti-glare layer, ESG polarizing plate and its preparation method. Background Technology

[0002] The main components of a polarizing plate include: a protective film, a surface treatment film, a polarizer (PVA film), a compensation film, a pressure-sensitive adhesive, and a release film. The primary optical component, consisting of the surface treatment film, the polarizer (PVA film), and the compensation film, plays a crucial role. The PVA film primarily polarizes light. After processes such as swelling, dyeing, stretching, and bridging, the I-type polarizers attached to its surface absorb light. However, under high temperature or high humidity conditions, PVA is prone to hydrolysis and loses its polarizing effect. Therefore, a protective layer that blocks moisture is usually placed on both sides of the polarizer (PVA film). Generally, the surface treatment film involves dispersing SiO2 particles in an organic solvent and then coating it onto the substrate surface to roughen the surface and achieve anti-glare. This surface treatment method is relatively simple and convenient, but the post-treatment with organic solvents leads to secondary energy consumption and increased carbon emissions. Similarly, thermosetting pressure-sensitive adhesives that use organic solvents also cause energy consumption and environmental pollution.

[0003] Therefore, developing a solvent-free ESG polarizer is a technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a solvent-free, safe, environmentally friendly, and non-toxic ESG photocurable adhesive, an ESG anti-glare layer, an ESG polarizing plate, and their preparation methods.

[0005] On the one hand, this application provides a method for preparing an ESG photocurable adhesive, comprising the following steps:

[0006] S1. By weight, 60 parts of bisphenol A type epoxy resin E-51 are heated to 90°C, and 2-8 parts of polyethylene glycol PEG and 0.05 parts of tetrahexylammonium bromide are added to E-51. The mixture is stirred evenly and reacted completely to obtain a PEG-modified E-51 solution.

[0007] S2. Add 20 parts of acrylic acid and 1-3 parts of maleic anhydride to the PEG-modified E-51 solution, stir evenly, and after full reaction, obtain an aqueous solution.

[0008] S3. Add 8-9 parts of triethylamine to the aqueous solution, stir evenly, and after sufficient reaction, obtain PEG-modified aqueous epoxy acrylate emulsion PEG-WEA.

[0009] S4. Add a cationic photoinitiator to the PEG-WEA emulsion, and after the reaction is complete, degas to obtain ESG photocurable adhesive.

[0010] More specifically, preferably, by weight, the amount of polyethylene glycol (PEG) added is 6 parts.

[0011] More specifically, the cationic initiator is selected from any one or more of aromatic diazonium salts, diaryliodothionium salts, triarylthionium salts, ferrocene salts, and hexafluorophosphates.

[0012] Secondly, this application provides an ESG photocurable adhesive prepared by the above preparation method.

[0013] Thirdly, this application provides an ESG anti-glare layer prepared from the above-mentioned ESG photocurable adhesive, wherein the Voc value of the ESG anti-glare layer is less than 0.1%.

[0014] Fourthly, this application provides an ESG polarizing plate, which includes, from top to bottom: a PET protective layer, an ESG anti-glare layer, a support layer, a PVA polarizing layer, a compensation film layer, a pressure-sensitive adhesive layer, and a release film layer. The ESG anti-glare layer has a plurality of protruding structures, the diameter of which is 1 to 2 μm and the height of which is 1 to 2 μm.

[0015] More specifically, the surface roughness Ra of the ESG anti-glare layer is 1.5 μm.

[0016] More specifically, the support layer material is selected from either PMMA or PET.

[0017] More specifically, the compensation film material is COP.

[0018] Fifthly, this application also provides a method for preparing the above-mentioned ESG polarizing plate, comprising the following steps:

[0019] T1. PVA polarizing layer is obtained by swelling, dyeing, stretching, cross-linking, water cutting and drying of PVA film;

[0020] T2. Apply a UV-curable adhesive evenly to both the upper and lower surfaces of the PVA polarizing layer, attach the support layer to one surface, and attach the compensation film layer to the opposite surface.

[0021] T3. The ESG photocurable adhesive is evenly coated on the support layer and the surface away from the compensation film layer. A raised structure is imprinted on the surface of the ESG photocurable adhesive using a UV photocurable embossing machine and cured into an ESG anti-glare layer.

[0022] T4. Use a bonding roller to bond the protective layer onto the ESG anti-glare layer.

[0023] T5. Apply PSA pressure-sensitive adhesive evenly to one surface of the release film, and attach the side of the release film with PSA pressure-sensitive adhesive evenly applied to the surface of the compensation film layer away from the support layer to obtain the ESG polarizing plate.

[0024] More specifically, the UV curing embossing machine has a curing light intensity of 900 mJ / cm². 2 The wavelength of the light is 365nm.

[0025] The beneficial effects of this application are:

[0026] 1. The ESG photocurable adhesive formulation designed in this application avoids the use of organic solvents, and the cured adhesive has high hardness and strong adhesion. The ESG anti-glare layer formed by imprinting and curing the ESG photocurable adhesive has the characteristics of stable microstructure, good weather resistance of the material layer, no solvent evaporation, and safety and non-toxicity.

[0027] 2. The surface roughening layer in the ESG polarizing plate designed in this application is an ESG anti-glare layer formed by imprinting and curing. This avoids the traditional roughening method of using solvents to disperse tiny particles, significantly reducing solvent evaporation in the material, extending the service life of the roughening layer, reducing the cost of secondary solvent treatment, and minimizing environmental pollution. Both the upper and lower protective layers of the ESG polarizing plate designed in this application are made of hydrophobic materials, exhibiting excellent weather resistance. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the ESG polarizing plate in this application;

[0029] Figure 2 This is a schematic diagram of the preparation of the ESG anti-glare layer in this application.

[0030] In the diagram: 1. PET protective layer; 2. ESG anti-glare layer; 3. Support layer; 4. PVA polarizing layer; 5. Compensation film layer; 6. Pressure-sensitive adhesive layer; 7. Release film; 8. Imprinting template. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the specific embodiments of this invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] The ESG photocurable adhesive designed in this application is polymerized from a PEG-modified waterborne epoxy acrylate emulsion PEG-WEA using a cationic photoinitiator. The PEG-WEA emulsion formulation includes the following components by weight: main resin: 60 parts bisphenol A type epoxy resin (E-51), 20 parts acrylic acid (AA); modified resin: 2-8 parts polyethylene glycol (PEG); additives: 1-3 parts maleic anhydride; initiator: 0.05 parts tetrahexylammonium bromide; polymerization inhibitor: 0.5 parts NN-dimethylaniline, 0.02 parts p-hydroxyanisole; neutralizer: 8-9 parts triethylamine. The amount of cationic photoinitiator is 1 part, and the cationic initiator can be selected from any one or more of aromatic diazonium salts, diaryl iodide brass salts, triaryl thiobium salts, ferrocene salts, and hexafluorophosphates. This application designs an ESG photocurable adhesive that modifies bisphenol A epoxy resin using polyethylene glycol, acrylic acid, and maleic anhydride. This overcomes the problems of poor flexibility, high brittleness, and poor adhesion in traditional water-based epoxy acrylates due to the use of bisphenol A epoxy resin. Preferably, the modification effect is optimal when the ratio of PEG to E-51 is 1:10. The formulation designed in this application avoids the use of organic solvents, making the production process safe and environmentally friendly, and resulting in excellent adhesion and high hardness after photocuring.

[0033] This application also provides a method for preparing an ESG photocurable adhesive, comprising the following steps:

[0034] S1. By weight, 60 parts of bisphenol A type epoxy resin E-51 are heated to 90°C in an oil bath. 2-8 parts of polyethylene glycol PEG and 0.05 parts of tetrahexylammonium bromide are added to E-51 and stirred thoroughly for 3 hours. After the reaction, a PEG-modified E-51 solution is obtained.

[0035] S2. Add 20 parts of acrylic acid to the PEG-modified E-51 solution. At this time, the acid value of the solution is <3mg / g. Then add 1 to 3 parts of maleic anhydride, stir evenly, and react fully for 3 hours to obtain an aqueous solution.

[0036] S3. Add 8-9 parts of triethylamine to the aqueous solution and neutralize for 30 min. After stirring evenly, obtain PEG-modified aqueous epoxy acrylate emulsion PEG-WEA.

[0037] S4. Add a cationic photoinitiator to the PEG-WEA emulsion, and after the reaction is complete, degas to obtain ESG photocurable adhesive.

[0038] This application also provides a method for preparing an ESG anti-glare layer using an ESG photocurable adhesive:

[0039] ESG photocurable adhesive was uniformly coated onto the substrate (PET) surface using a 20μm coater at a speed of 5m / min. The ESG photocurable adhesive was then imprinted using a UV-curable embossing machine. A self-made Si / SiO2 nanoimprinting template (with a dot array, dot diameter 1–2μm, depth 1–2μm) was used for the imprinting. After imprinting, the substrate was cured by UV irradiation (light intensity 900mJ / cm²). 2 Irradiation with light wavelength 365nm, followed by curing and demolding to obtain the ESG anti-glare layer. For example... Figure 2 As shown, the embossing template 8 embosses the ESG anti-glare layer 2 on the support layer 3 into a raised micro-nano structure.

[0040] Examples 1-4 and Comparative Example 1 were prepared sequentially using the above preparation method:

[0041] Example 1: Main resin: 60 parts E-51, 20 parts AA, modified resin: 2 parts PEG, additives: 2 parts maleic anhydride, initiator: 0.05 parts tetrahexylammonium bromide, polymerization inhibitor: 0.5 parts NN-dimethylaniline + 0.02 parts p-hydroxyanisole, neutralizer: 8 parts triethylamine, cationic initiator: 1 part diaryl iodide brass.

[0042] Example 2: Main resin: 60 parts E-51, 20 parts AA, modified resin: 4 parts PEG, additives: 2 parts maleic anhydride, initiator: 0.05 parts tetrahexylammonium bromide, polymerization inhibitor: 0.5 parts NN-dimethylaniline + 0.02 parts p-hydroxyanisole, neutralizer: 8 parts triethylamine, cationic initiator: 1 part diaryl iodide brass.

[0043] Example 3: Main resin: 60 parts E-51, 20 parts AA, modified resin: 6 parts PEG, additives: 2 parts maleic anhydride, initiator: 0.05 parts tetrahexylammonium bromide, polymerization inhibitor: 0.5 parts NN-dimethylaniline + 0.02 parts p-hydroxyanisole, neutralizer: 8 parts triethylamine, cationic initiator: 1 part diaryl iodide brass.

[0044] Example 4: Main resin: 60 parts E-51, 20 parts AA, modified resin: 8 parts PEG, additives: 2 parts maleic anhydride, initiator: 0.05 parts tetrahexylammonium bromide, polymerization inhibitor: 0.5 parts NN-dimethylaniline + 0.02 parts p-hydroxyanisole, neutralizer: 8 parts triethylamine, cationic initiator: 1 part diaryl iodide brass.

[0045] Comparative Example 1: Main resin: 60 parts E-51, 20 parts AA, additives: 2 parts maleic anhydride, initiator: 0.05 parts tetrahexylammonium bromide, polymerization inhibitor: 0.5 parts NN-dimethylaniline + 0.02 parts p-hydroxyanisole, neutralizer: 8 parts triethylamine, cationic initiator: 1 part diaryl iodide brass.

[0046] The difference between the examples and the comparative examples lies in the different mass fractions of the main resin E-51 or the modified resin PEG. The components and amounts of the additives, initiators, polymerization inhibitors, neutralizers, and cationic initiators in the formulations are the same.

[0047] Hardness testing: A JIS K5400 pencil hardness tester from Toyo Seiki Co., Ltd. was used.

[0048] Test load: 4.9 N, pencil moving speed: 1.4 mm / s, the sample was heated to 100 °C for 10 minutes before and after the test.

[0049] Adhesion test: The JIS K5400 coating adhesion test, millimeter cross test, is used to calculate the percentage of the square with coating. Nichiban No. 405 tape (24mm width) is used. It can be peeled once, and edge peeling is acceptable.

[0050]

[0051] The specific hardness and adhesion test results are shown in the table above. In Examples 1-4, the anti-glare layer prepared by the ESG photocurable adhesive of the proposed design has good hardness and adhesion, and is suitable for placement on a PET substrate. However, in Comparative Example 1, the unmodified bisphenol A epoxy resin without PEG showed lower hardness and adhesion, and the haze was only 1.0, making it unsuitable for use in polarizing plates.

[0052] This application also provides an ESG-type pressure-sensitive adhesive, comprising the following components in parts by weight:

[0053] 40-60 parts of the main resin: polyurethane acrylate (UV-7605) and epoxy resin (EP815) in a mass ratio of 1:2;

[0054] Diluent 20-40 parts: 1-ethoxybisphenol A dimethacrylate (EM3260);

[0055] Photoinitiator 3-5 parts: hydroxycyclohexyl phenyl ketone (184);

[0056] Thickening resin 1.5 to 3.5 parts: acrylic acid (AA).

[0057] Preparation method of ESG type pressure-sensitive adhesive: Place 20-40 parts of EM3260 and 3-5 parts of photoinitiator 184 in a stirring device equipped with a cooling device, introduce nitrogen gas, and stir for 5 minutes to fully dissolve the initiator. Add 40-60 parts of UV-7605 and EP815 (UV-7605:EP815 = 1:2), and simultaneously add 1.5-3.5 parts of acrylic acid. Stir evenly and degas to obtain ESG type pressure-sensitive adhesive.

[0058] ESG type pressure-sensitive adhesive viscosity measurement:

[0059] Viscosity was tested using an NDJ-8S rotational viscometer from Shanghai Fangrui Co., Ltd., in accordance with GB / T2794-1995, at a test temperature of (25±0.5)℃.

[0060] Curing time measurement of ESG type pressure-sensitive adhesive:

[0061] Dip a glass rod into a small amount of pressure-sensitive adhesive and apply it evenly to the PET film. Place the film in a UV curing machine and cure until fully cured. Test the curing time.

[0062]

[0063] As the test results show, in groups 1 and 2, the curing time of the pressure-sensitive adhesive increased significantly due to the excessive addition of the main resin. In contrast, in groups 3 and 4, where the formulation components strictly adhered to the designed proportions, the curing time was shorter. The ESG-type pressure-sensitive adhesive designed in this application reduces the use of volatile solvents, exhibits fast curing speed, high viscosity, and excellent adhesive properties.

[0064] like Figure 1 As shown, this application also provides an ESG polarizing plate, which, from top to bottom, comprises: a PET protective layer 1, an ESG anti-glare layer 2, a support layer 3, a PVA polarizing layer 4, a compensation film layer 5, a pressure-sensitive adhesive layer 6, and a release film layer 7. Solvent-free light-curing adhesives are used for bonding the interlayer materials, and the VOC content of each layer in the ESG polarizing plate is <0.1%.

[0065] The specific steps in preparing an ESG polarizing plate include:

[0066] T1. After the PVA film is swollen, dyed, stretched, cross-linked, water-cut and dried, a PVA polarizing layer 4 with light polarization effect is obtained.

[0067] T2. A UV-curable adhesive is uniformly coated on both the upper and lower surfaces of the PVA polarizing layer 4. A roller bonding method is used to bond the PMMA or PET support layer 3 on one surface and the COP compensation film layer 5 on the opposite surface. Before bonding the COP compensation film layer 5, a corona treatment is performed on the bonding film with a corona energy of 2.5kw.

[0068] T3. Apply the ESG photocurable adhesive evenly to the surface of the support layer 3 away from the compensation film layer 5 using a 20μm applicator at a speed of 5m / min. Imprint the ESG photocurable adhesive using a UV photocurable embossing machine. The embossing template is a self-made Si / SiO2 nano-imprinting template (the template has a pit array with pit diameters of 1-2μm and depths of 1-2μm). After embossing, cure under UV light (light intensity 900mJ / cm²). 2 Irradiation wavelength 365nm), after curing, demolding to obtain ESG anti-glare layer 2;

[0069] T4. Use a laminating roller to laminate the PET protective layer 1 onto the ESG anti-glare layer 2.

[0070] T5. Apply PSA pressure-sensitive adhesive evenly to one surface of the release film, and attach the side of the release film with PSA pressure-sensitive adhesive evenly applied to the surface of the compensation film layer away from the support layer to obtain the ESG polarizing plate.

[0071] Examples and comparative examples prepared according to the above-described method for preparing polarizing plates:

[0072] Example 5

[0073] After undergoing swelling, dyeing, stretching, cross-linking, water-cutting, and drying processes, a PVA polarizing layer 4 with optical polarization effect is obtained. A UV-curable adhesive is uniformly coated on both the upper and lower surfaces of the PVA polarizing layer 4. Using a roller bonding method, a PMMA support layer 3 is bonded to one surface, and a corona-treated COP compensation film layer 5 (R0: 55nm, Rth: 135nm) is bonded to the opposite surface. ESG photocurable adhesive is uniformly applied to the surface of the support layer 3 away from the compensation film layer 5 using a 20μm applicator at a speed of 5m / min. The ESG photocurable adhesive is then imprinted using a UV photocurable embossing machine, and cured under UV light (900mJ / cm²). 2 Irradiation with light (wavelength 365nm) was performed, and after curing, the ESG anti-glare layer 2 was obtained by demolding. A PET protective layer 1 was then bonded to the ESG anti-glare layer 2 using a bonding roller. A light-cured PSA pressure-sensitive adhesive was uniformly coated onto one surface of the release film using a 10μm applicator. The side of the release film with the uniformly coated PSA pressure-sensitive adhesive was then bonded to the surface of the compensation film layer furthest from the support layer, resulting in an ESG polarizing plate.

[0074] Example 6

[0075] The polarizing plate was prepared using similar materials and preparation methods as in Example 5, except that the material of the support layer was selected as PET film, while the other material selection, preparation methods and process parameters were the same.

[0076] Comparative Example 5

[0077] After undergoing swelling, dyeing, stretching, cross-linking, water-cutting, and drying processes, a PVA polarizing layer 4 with light polarization effect is obtained. Both the upper and lower surfaces of the PVA polarizing layer 4 are corona treated, and then uniformly coated with a thermosetting water-based adhesive. A triacetate cellulose acetate film (TAC) with PK3 haze 3%, ROI: 50nm, Rth: 132nm is laminated onto both surfaces using a roller lamination method. After lamination, the film is cured in an oven. After curing, an ESG anti-glare layer 2, a PET protective layer 1, and a release film 7 are laminated onto the TAC surface using the same method as in Example 5. The difference from Example 5 is that both the upper and lower layers of the PVA polarizing layer 4 are TAC, and the pressure-sensitive adhesive layer uses a thermosetting PSA.

[0078] Comparative Example 6

[0079] Polarizing plates were prepared using similar materials and preparation methods as in Comparative Example 6, except that TAC material with a haze of 25% was selected. The other material selection, preparation methods, and process parameters were the same.

[0080] The polarizing plates prepared in Examples 5-6 and Comparative Examples 5-6 were subjected to the following performance tests:

[0081] Peel strength test: Take a sample of 25*150mm and use a tensile testing machine at a speed of 300mm per minute to peel the sample in a 180° direction. The peel strength unit is gf / 25mm.

[0082] PSA Adhesion Test: Samples (25*150mm) were peeled off from the release film and protective film, adhered to a clean glass plate, and rolled back and forth once with a 2kg roller. After Auto Clave treatment, the sample was left for 24 hours. Then, a tensile testing machine was used to peel the sample at a speed of 300mm per minute in a 180° direction. Auto Clave conditions: 50℃, 5kg, 20 minutes. Adhesion unit: gf / 25mm.

[0083] To test the dimensional shrinkage rate of the polarizer, a 50*150mm sample was placed on a clean glass plate. After pressure treatment, the protective film was removed, and the sample was then placed in a 60℃ / 90%RH environment for 500 hours before testing. (Pressure treatment conditions: 50℃, 5kgf / cm²) 2 (15 min). 0hr or 500hr size = (length + width) / 2, size shrinkage rate = [(500hr size - 0hr size) / 0hr size] * 100%. Where 0hr represents the original size of the sample, and 500hr represents the size of the sample after 500 hours of processing.

[0084]

[0085] Based on the performance test results of the embodiments and comparative examples, the ESG polarizing plate designed in this application uses a light-curing adhesive, whose peel strength is comparable to that of a thermosetting adhesive, and the light-curing PSA has stronger adhesion. The light-curing adhesive results in lower shrinkage of the polarizing plate, giving it good weather resistance and maintaining stable performance even in high-temperature and high-humidity environments.

[0086] The embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A method for preparing an ESG photocurable adhesive, characterized in that, Includes the following steps: S1. By weight, 60 parts of bisphenol A type epoxy resin E-51 are heated to 90°C, and 2-8 parts of polyethylene glycol PEG and 0.05 parts of tetrahexylammonium bromide are added to E-51. The mixture is stirred evenly and reacted completely to obtain a PEG-modified E-51 solution. S2. Add 20 parts of acrylic acid and 1-3 parts of maleic anhydride to the PEG-modified E-51 solution, stir evenly, and after full reaction, obtain an aqueous solution. S3. Add 8-9 parts of triethylamine to the aqueous solution, stir evenly, and after sufficient reaction, obtain PEG-modified aqueous epoxy acrylate emulsion PEG-WEA. S4. Add a cationic photoinitiator to the PEG-WEA emulsion, and after the reaction is complete, degas to obtain ESG photocurable adhesive.

2. The preparation method according to claim 1, characterized in that, Preferably, the amount of polyethylene glycol (PEG) added is 6 parts by weight.

3. The preparation method according to claim 1, characterized in that, The cationic initiator is selected from any one or more of aromatic diazonium salts, diaryliodothionium salts, triarylthionium salts, ferrocene salts, and hexafluorophosphates.

4. An ESG photocurable adhesive prepared by the preparation method according to any one of claims 1 to 3.

5. An ESG anti-glare layer prepared from the ESG photocurable adhesive of claim 4, characterized in that, The Voc value of the ESG anti-glare layer is less than 0.1%.

6. An ESG polarizing plate, characterized in that, From top to bottom, it includes: a PET protective layer, an ESG anti-glare layer as described in claim 5, a support layer, a PVA polarizing layer, a compensation film layer, a pressure-sensitive adhesive layer, and a release film layer; the ESG anti-glare layer has a plurality of protruding structures, the diameter of the protruding structures being 1 to 2 μm and the height being 1 to 2 μm.

7. The ESG polarizing plate according to claim 6, characterized in that, The surface roughness Ra of the ESG anti-glare layer is 1.5 μm.

8. The ESG polarizing plate according to claim 6, characterized in that, The support layer material is selected from either PMMA or PET.

9. The ESG polarizing plate according to claim 6, characterized in that, The compensation membrane material is COP.

10. A method for preparing an ESG polarizing plate according to any one of claims 6 to 9, characterized in that, Includes the following steps: T1. PVA polarizing layer is obtained by swelling, dyeing, stretching, cross-linking, water cutting and drying of PVA film; T2. Apply a UV-curable adhesive evenly to both the upper and lower surfaces of the PVA polarizing layer, attach the support layer to one surface, and attach the compensation film layer to the opposite surface. T3. The ESG photocurable adhesive is evenly coated on the support layer and the surface away from the compensation film layer. A raised structure is imprinted on the surface of the ESG photocurable adhesive using a UV photocurable embossing machine and cured into an ESG anti-glare layer. T4. Use a bonding roller to bond the protective layer onto the ESG anti-glare layer. T5. Apply PSA pressure-sensitive adhesive evenly to one surface of the release film, and attach the side of the release film with PSA pressure-sensitive adhesive evenly applied to the surface of the compensation film layer away from the support layer to obtain the ESG polarizing plate.

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