Anti-fingerprint salt-fog-resistant adhesive tape for OLED module and preparation method of anti-fingerprint salt-fog-resistant adhesive tape

Abstract

The invention relates to the field of functional adhesive tapes, and discloses an anti-fingerprint salt-fog-resistant adhesive tape for an OLED module and a preparation method of the anti-fingerprint salt-fog-resistant adhesive tape. The anti-fingerprint and salt-fog-resistant adhesive tape for the OLED module comprises an anti-fingerprint and salt-fog-resistant coating, a metal foil layer, an adhesive layer and a release layer which are sequentially attached, the anti-fingerprint and salt-fog-resistant coating is prepared by curing a coating, and the coating is prepared from 84-92 wt% of an acrylate resin solution, 3-6 wt% of TEOS and 5-10 wt% of water. The acrylate resin solution is prepared from the following raw materials in percentage by weight: 25-30% of a hard monomer, 20-25% of a soft monomer, 3.5-7% of a functional monomer, 38-51% of a solvent and 0.5-1.5% of an initiator; the functional monomer is composed of a fluorine-containing acrylate monomer and a silane monomer in a weight ratio of 3: (4-7.5). The adhesive tape provided by the invention has relatively good fingerprint resistance and salt spray resistance, is applied to OLED modules, and has good pollution resistance and protection performance.

Description

Technical Field

[0001] The present application relates to the field of functional tapes, and more specifically, to an anti-fingerprint and salt-spray resistant tape for OLED modules and a preparation method thereof. Background Art

[0002] With the increasing sophistication of electronic products, organic light-emitting diode (OLED) modules are increasingly being used in electronic devices. OLED modules offer high-precision and high-resolution displays, fast response times, a thin and lightweight structure, and flexibility. Their self-luminous principle enables higher contrast and a wider color gamut, making them a core display component in high-end smartphones, tablets, smartwatches, and automotive displays.

[0003] In the actual assembly of OLED modules, tape is needed for encapsulation and fixation. The tape currently used generally consists of an adhesive layer and a supporting PET layer, which can provide reliable support for the screen structure.

[0004] However, during the packaging and transport of OLED modules to the next process, this tape is easily contaminated with dirt. This dirt can affect the light transmission path in the OLED module, causing bright spots, dark spots, or blurring on the display, reducing display quality. Furthermore, in actual applications, when OLED modules are used in harsh environments such as high temperature and humidity, moisture and dust can easily enter the OLED module. Existing tapes provide little protection for OLED modules, thus affecting their service life and reliability. Summary of the Invention

[0005] In order to solve the problems that the existing tape used for OLED module packaging has low anti-fouling performance and low protection performance for OLED modules when used in harsh environments such as high temperature and humidity, the present application provides an anti-fingerprint and salt spray resistant tape for OLED modules and a preparation method thereof.

[0006] In a first aspect, the present application provides an anti-fingerprint and salt spray resistant tape for an OLED module, which adopts the following technical solution: An anti-fingerprint and salt-spray-resistant tape for an OLED module comprises an anti-fingerprint and salt-spray-resistant coating, a metal foil layer, an adhesive layer, and a release layer laminated in sequence. The anti-fingerprint and salt-spray-resistant coating is prepared by curing a coating, wherein the coating is prepared from 84-92 wt% of an acrylate resin solution, 3-6 wt% of TEOS, and 5-10 wt% of water. The acrylate resin solution is prepared from the following raw materials in the following weight percentages: Hard monomer 25-30% Soft monomer 20-25% Functional monomer 3.5-7% Solvent 38-51% Initiator 0.5-1.5%; The functional monomer consists of a fluorine-containing acrylate monomer and a silane monomer in a weight ratio of 3:(4-7.5).

[0007] By adopting the above technical solution, the anti-fingerprint and salt-spray-resistant coating imparts excellent anti-fouling and corrosion resistance to the tape, effectively protecting the OLED module. The metal foil layer provides excellent shielding and support for the tape, effectively preventing external moisture and dust from invading the OLED module. The adhesive layer ensures a stable bond between the tape and the OLED module, preventing it from falling off during use. The release layer protects the adhesive layer, facilitating processing, transportation, and use of the tape and preventing damage. The anti-fingerprint and salt-spray-resistant coating is made from an acrylate resin solution, TEOS, and water. The combination of hard and soft monomers in the acrylate resin solution imparts excellent strength and flexibility to the coating. The functional monomers, composed of a preferred weight ratio of fluorinated acrylate monomers and silane monomers, exhibit synergistic effects and can further polymerize with the hard and soft monomers, imparting the anti-fingerprint and salt-spray-resistant coating with excellent anti-fouling and corrosion resistance. By further combining an acrylic resin solution, TEOS, and water, the anti-fingerprint and salt-spray resistant coating's water resistance, stain resistance, and corrosion resistance are further enhanced. This solves the problem of existing tape being easily contaminated during the OLED module packaging and transportation process. This effectively prevents contamination from affecting the light transmission path within the OLED module, avoiding bright spots, dark spots, or blur on the display, significantly improving display quality. The tape also enhances its protective performance against OLED modules, effectively preventing moisture and dust from entering the module in harsh environments such as high temperature and humidity, extending its service life and enhancing reliability.

[0008] Preferably, the fluorine-containing acrylate monomer is (N-methylperfluorohexylsulfonamido)ethyl acrylate, and the silane monomer is γ-methacryloyloxypropyltrimethoxysilane.

[0009] By adopting the above technical solution, ethyl acrylate (N-methylperfluorohexylsulfonamide) is selected as the fluorine-containing acrylate monomer and γ-methacryloxypropyltrimethoxysilane is used as the silane monomer. Cross-linking points are introduced into the system to improve adhesion. At the same time, the two synergistically polymerize with each other to form a cross-linked molecular structure, giving the tape excellent hydrophobicity, oleophobicity and corrosion resistance, effectively preventing fingerprint residue and oil pollution; ensuring the stability and reliability of the OLED module under high temperature and humidity conditions.

[0010] Preferably, the hard monomer is methyl methacrylate and / or ethyl methacrylate, and the soft monomer is one or a combination of butyl acrylate, lauryl acrylate, n-octyl methacrylate, and 2-ethylhexyl acrylate.

[0011] By adopting the above technical solution, the use of methyl methacrylate and / or ethyl methacrylate as hard monomers can improve the coating's hardness, abrasion resistance, and water resistance. The use of one or a combination of butyl acrylate, lauryl acrylate, n-octyl methacrylate, and 2-ethylhexyl acrylate as soft monomers significantly enhances the coating's flexibility and bending properties, allowing the tape to maintain stable adhesion even on curved or complex OLED modules, preventing stress-induced cracking or peeling.

[0012] Preferably, the solvent is at least two of propylene glycol methyl ether, isopropyl alcohol, propylene glycol methyl ether acetate, and ethylene glycol butyl ether.

[0013] By adopting the above technical solution, the above solvent can effectively improve the solubility of each component, adjust the viscosity during the polymerization process, and improve the uniformity and stability of the polymerization.

[0014] Preferably, the acrylate resin solution is prepared by the following steps: The solvent is added into the reaction equipment, and the hard monomer, soft monomer and functional monomer are added into the solvent and stirred evenly; under the protection of nitrogen, the initiator is added, and the mixture is heated and refluxed to react, thereby obtaining an acrylate resin solution.

[0015] By employing this technical solution, the solvent, hard monomer, soft monomer, and functional monomer are uniformly stirred to form a stable reaction system, ensuring uniform distribution of the monomers, thereby improving the performance consistency of the final product. Adding the initiator and heating the reflux reaction under nitrogen protection eliminates the effects of oxygen on the reaction, ensuring efficient reaction and ultimately producing an acrylate resin solution with excellent anti-fingerprint and salt spray resistance.

[0016] Preferably, the metal foil layer is any one of aluminum foil, copper foil, and stainless steel strip.

[0017] By adopting the above technical solution and selecting aluminum foil, copper foil, or stainless steel tape as the metal foil layer, the tape can be endowed with excellent electromagnetic shielding performance, mechanical strength, and corrosion resistance. This enhances the overall structural stability of the tape and provides better protection during the OLED module encapsulation process.

[0018] Preferably, the adhesive layer is made of any one of acrylic pressure-sensitive adhesive and silicone pressure-sensitive adhesive.

[0019] By adopting the above technical solution, the adhesive layer is made of acrylic pressure-sensitive adhesive or silicone pressure-sensitive adhesive, which has excellent adhesion and degassing properties, ensuring stable bonding between the tape and the OLED module.

[0020] Preferably, the anti-fingerprint and salt spray resistant coating has a thickness of 0.1-2 μm.

[0021] By adopting the above technical solution, the thickness of the anti-fingerprint and salt-spray resistant coating is set to 0.1-2μm, which can evenly cover the surface of the metal foil layer to form a dense protective layer, effectively preventing external pollutants such as water vapor, dust and fingerprints from invading the interior of the OLED module. While ensuring that the coating provides effective protection for the OLED module, it reduces material usage and optimizes production costs.

[0022] In a second aspect, the present application provides a method for preparing an anti-fingerprint and salt spray resistant tape for an OLED module, which adopts the following technical solution: A method for preparing an anti-fingerprint and salt-spray resistant tape for an OLED module comprises the following steps: S1, mixing an acrylic resin solution, TEOS and water and refluxing and keeping warm to prepare a coating; S2. diluting the coating with ethanol, applying it on the surface of the metal foil layer, and drying it to form an anti-fingerprint and salt spray resistant coating; S3, applying a pressure-sensitive adhesive to the side of the metal foil away from the anti-fingerprint and salt-spray resistant coating, and curing the adhesive to form an adhesive layer; S4. Laminating a release layer on the surface of the adhesive layer to prepare an anti-fingerprint and salt spray resistant tape for an OLED module.

[0023] By adopting the above technical solution, first, by mixing an acrylate resin solution, TEOS and water in a preferred amount and refluxing and keeping them warm, TEOS is hydrolyzed under the action of water and can be further dispersed with the acrylate resin solution system to improve the dispersion uniformity, adhesion, water resistance and corrosion resistance of the coating. The coating is then diluted with ethanol to further form a system with uniform viscosity and dispersibility, which is then applied to the surface of the metal foil layer. By the collaboration of steps S1 and S2, a uniform coating film can be formed on the surface of the metal foil layer, further improving the water resistance, anti-fouling and corrosion resistance of the anti-fingerprint salt spray resistant coating. The pressure-sensitive adhesive is then applied to the other side of the metal foil and an adhesive layer is formed by a curing treatment at an appropriate temperature and time. A release layer is then bonded to the surface of the adhesive layer to complete the preparation of the entire tape. By the preparation process of the present application, a stable anti-fingerprint salt spray resistant tape for OLED modules is obtained.

[0024] Preferably, the reaction temperature in step S1 is 58-65° C., and the reaction time is 5-8 h; and the weight ratio of the coating to ethanol in step S2 is 1:(0.5-1).

[0025] By adopting this technical solution, the weight ratio of coating material to ethanol is controlled at 1:(0.5-1), effectively adjusting the viscosity of the coating solution and ensuring the uniformity and adhesion of the anti-fingerprint and salt spray-resistant coating. The reaction temperature is 58-65°C and the reaction time is 5-8 hours, which allows for sufficient reaction and dispersion of the acrylate resin solution, TEOS, and water.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The anti-fingerprint and salt-spray resistant tape for OLED modules of the present application is prepared by sequentially arranging an anti-fingerprint and salt-spray resistant coating, a metal foil layer, an adhesive layer and a release layer. The anti-fingerprint and salt-spray resistant coating is made of a hard monomer, a soft monomer, a functional monomer, a solvent and an initiator. The functional monomer is composed of a fluorinated acrylate monomer and a silane monomer in optimal weights. The two have a good synergistic effect and can be further polymerized with the hard monomer and the soft monomer to give the anti-fingerprint and salt-spray resistant coating excellent anti-fouling and corrosion resistance, solving the problem that the existing tape is easily contaminated with dirt during the packaging and transportation of the OLED module. The tape can effectively block external moisture and dust from entering the interior of the OLED module in harsh environments such as high temperature and humidity, thereby enhancing the protective effect of the OLED module.

[0027] 2. Ethyl acrylate (N-methylperfluorohexylsulfonamide) is selected as the fluorinated acrylate monomer and γ-methacryloxypropyltrimethoxysilane is used as the silane monomer. Cross-linking points are introduced into the system to improve adhesion. The two synergistically polymerize to form a cross-linked molecular structure, giving the tape excellent hydrophobicity, oleophobicity, and corrosion resistance, effectively preventing fingerprint residue and oil contamination. This significantly improves the tape's protection in harsh environments and ensures the stability and reliability of the OLED module under high temperature and humid conditions.

[0028] 3. The preparation method of the present application forms a uniform and stable coating by mixing optimal amounts of an acrylate resin solution, TEOS, and water and subjecting the mixture to reflux and heat preservation, further improving the coating's dispersion uniformity, adhesion, and water resistance. The coating is then diluted with ethanol to form a system with uniform viscosity and dispersibility, which is then applied to the surface of a metal foil layer. The synergistic combination of these two steps forms a uniform coating film on the surface of the metal foil layer, further improving the water resistance and corrosion resistance of the anti-fingerprint and salt-spray-resistant coating, ultimately producing a stable anti-fingerprint and salt-spray-resistant tape for OLED modules. DETAILED DESCRIPTION

[0029] The present application is further described in detail below with reference to the embodiments.

[0030] The following are the sources and specifications of some raw materials of this application. The raw materials used in the preparation examples and examples of this application can be obtained from commercial sources, including but not limited to the following models and manufacturers. Raw materials with equivalent performance can be used: 1. TEOS: electronic grade, tetraethyl orthosilicate, Merck, Germany; 2. Acrylic pressure-sensitive adhesive: Anzu Chemical Y-1441; 3. Silicone pressure-sensitive adhesive: Dow DOWSIL TM 7657; 4. Copper foil: elastic modulus ≥ 100Gpa, yield strength ≥ 450Mpa, hardness (HV) ≥ 120, thickness: 10-100μm; 5. Aluminum foil: elastic modulus ≥50Gpa, yield strength ≥300Mpa, hardness (HV) ≥100, thickness: 10-100μm; 6. Stainless steel belt: SUS304\SUS316 belt, elastic modulus ≥150Gpa, yield strength ≥300Mpa, hardness (HV) ≥150, thickness: 10-100μm; 7. Release layer: 50-100μm mesh PET release film.

[0031] Preparation Example of Acrylate Resin Solution Preparation Example 1 Preparation Example 1 discloses an acrylic resin solution, which is prepared by the following steps: 2.8 kg of propylene glycol methyl ether and 1 kg of isopropanol were added to a reactor as a solvent, 3 kg of methyl methacrylate was added as a hard monomer, 2.5 kg of butyl acrylate was added as a soft monomer, 0.2 kg of perfluorohexylethyl acrylate and 0.4 kg of γ-methacryloyloxypropyltrimethoxysilane were added as functional monomers to the solvent and stirred evenly; under nitrogen protection, 0.1 kg of azobisisobutyronitrile was added as an initiator, and the mixture was heated to 78 ° C for reflux reaction, reacted for 6 hours, and cooled to obtain an acrylate resin solution.

[0032] Preparation Example 2-3 The difference between Preparation Example 2-3 and Preparation Example 1 is that the amount of raw materials used and the preparation conditions are different. Please refer to Table 1 below for details.

[0033] Table 1 Parameters of Preparation Examples 1-3 Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that the fluorine-containing acrylate monomer is (N-methylperfluorohexylsulfonamido)ethyl acrylate, and the other components are the same as Preparation Example 1.

[0034] Preparation Comparative Example 1 The difference between Preparation Comparative Example 1 and Preparation Example 4 is that an equal amount of γ-methacryloxypropyltrimethoxysilane is replaced by (N-methylperfluorohexylsulfonamido)ethyl acrylate, and the rest is the same as Preparation Example 4. Example

[0035] Example 1 Example 1 discloses an anti-fingerprint and salt-spray-resistant tape for an OLED module, comprising an anti-fingerprint and salt-spray-resistant coating, a metal foil layer, an adhesive layer, and a release layer laminated in sequence. The anti-fingerprint and salt-spray-resistant coating is prepared by curing a coating prepared from an acrylate resin solution, TEOS, and water. The thickness of the anti-fingerprint and salt-spray-resistant coating is 0.1-2 μm, and the thickness of the anti-fingerprint and salt-spray-resistant coating in this embodiment is 1 μm. The metal foil layer is any one of aluminum foil, copper foil, and stainless steel strip, and the thickness of the metal foil layer is 10-100 μm. The metal foil layer in this embodiment is copper foil and has a thickness of 20 μm. The adhesive layer is made of acrylic pressure-sensitive adhesive or silicone pressure-sensitive adhesive, and the thickness of the adhesive layer is 15-30 μm. The adhesive layer in this embodiment is made of acrylic pressure-sensitive adhesive and has a thickness of 15 μm. The release layer is a 50-100 μm mesh PET release film, and preferably, the thickness of the release layer in this embodiment is 50 μm.

[0036] The anti-fingerprint and salt spray resistant tape for OLED modules is prepared by the following steps: S1, 9.2 kg of the acrylic resin solution prepared in Preparation Example 1, 0.3 kg of TEOS and 0.5 kg of water were mixed and refluxed for reaction at a temperature of 58 ° C. and a reaction time of 8 h to prepare a coating; S2. Dilute 1 kg of the coating with 0.5 kg of ethanol, apply it to the surface of the metal foil layer, and dry it at 100°C for 30 minutes to form an anti-fingerprint and salt spray resistant coating; S3, coating the pressure-sensitive adhesive on the side of the metal foil away from the anti-fingerprint and salt-spray resistant coating, and curing the metal foil at a temperature of 58° C. for 72 hours to form an adhesive layer; S4. Laminating a release layer on the surface of the adhesive layer to prepare an anti-fingerprint and salt spray resistant tape for an OLED module.

[0037] Example 2-3 The difference between Example 2-3 and Example 1 is that the raw material amounts and preparation process parameters are different, see Table 2 below for details.

[0038] Table 2 Parameters of Examples 1-3 Example 4 The difference between Example 4 and Example 1 is that the acrylate resin solution comes from Preparation Example 4, and the rest is the same as Example 1.

[0039] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the acrylate resin solution is derived from the preparation of Comparative Example 1, and the rest is the same as Example 1.

[0040] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that step S1 is not performed, 1 kg of acrylate resin solution is directly diluted with 0.5 kg of ethanol, and then coated on the surface of the metal foil layer. The other steps are the same as those in Example 1.

[0041] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that the amount of acrylate resin solution used is 7.5 kg, the amount of TEOS used is 1.2 kg, and the amount of water used is 1.3 kg. Other steps are the same as those in Example 1.

[0042] Performance testing The following performance tests were conducted on the anti-fingerprint and salt spray resistant tapes for OLED modules prepared in Examples 1-4 and Comparative Examples 1-3: 1. Salt spray resistance test: Take a tape sample, place it in a salt spray machine, adjust the temperature to 35°C, and continuously spray it with 5wt% sodium chloride solution. Observe it every 12 hours, record the time when the surface changes color or oxidizes, and record the test time; 2. Hydrophobicity and oleophobicity test Use a contact angle tester to drop pure water and hexadecane onto the surface of the tape sample, and record the water drop angle.

[0043] The following are the performance test data of the anti-fingerprint and salt spray resistant tapes for OLED modules prepared in Examples 1-4 and Comparative Examples 1-3 of the present application, see Table 3 below for details.

[0044] Table 3 Test data of Examples 1-4 and Comparative Examples 1-4 In combination with Examples 1-3, Example 4 and Comparative Example 1 and Table 3, it can be concluded that the use of ethyl acrylate (N-methyl perfluorohexyl sulfonamide) as a fluorinated acrylate monomer and γ-methacryloxypropyl trimethoxysilane as a silane monomer for compounding, as a functional monomer, the tape obtained has good anti-fingerprint performance and corrosion resistance. Compared with Example 1, Example 4 optimizes the type of fluorinated acrylate monomer, and the hydrophobicity and oleophobicity of the tape obtained are improved, so that the anti-fouling property is improved and the salt spray resistance time is also improved. In Comparative Example 1, γ-methacryloxypropyl trimethoxysilane is replaced with ethyl acrylate (N-methyl perfluorohexyl sulfonamide). Although the hydrophobicity is slightly improved, the oleophobicity is reduced, and the salt spray resistance time is reduced.

[0045] Combining Examples 1-3 and Comparative Examples 2-3 and Table 3, it can be concluded that the use of the acrylate resin solution prepared in the present application in combination with TEOS and water to prepare an anti-fingerprint and salt spray resistant coating improves the anti-fingerprint and corrosion resistance of the tape obtained. In Comparative Example 2, no reaction is performed, and the hydrophobicity and oleophobicity of the tape obtained are reduced, resulting in reduced antifouling properties and a reduced salt spray resistance time. In Comparative Example 3, the amount of TEOS is increased and the amount of acrylate resin solution is reduced, and the hydrophobicity and oleophobicity of the tape obtained are reduced, resulting in reduced antifouling properties and a reduced salt spray resistance time. This may be because the excessive amount of TEOS reduces the stability of the system, thereby reducing the water resistance and oil resistance of the tape.

[0046] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An anti-fingerprint and salt spray resistant tape for OLED modules, characterized in that: The invention comprises an anti-fingerprint and salt-spray resistant coating, a metal foil layer, an adhesive layer and a release layer which are laminated in sequence. The anti-fingerprint and salt-spray resistant coating is prepared by curing a coating, wherein the coating is prepared from 84-92 wt% of an acrylate resin solution, 3-6 wt% of TEOS and 5-10 wt% of water. The acrylate resin solution is prepared from the following raw materials in the following weight percentages: Hard monomer 25-30% Soft monomer 20-25% Functional monomer 3.5-7% Solvent 38-51% Initiator 0.5-1.5%; The functional monomer consists of a fluorine-containing acrylate monomer and a silane monomer in a weight ratio of 3:(4-7.5).

2. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The fluorine-containing acrylate monomer is (N-methylperfluorohexylsulfonamido)ethyl acrylate, and the silane monomer is γ-methacryloyloxypropyltrimethoxysilane.

3. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The hard monomer is methyl methacrylate and / or ethyl methacrylate, and the soft monomer is one or a combination of butyl acrylate, lauryl acrylate, n-octyl methacrylate, and 2-ethylhexyl acrylate.

4. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The solvent is at least two of propylene glycol methyl ether, isopropyl alcohol, propylene glycol methyl ether acetate, and ethylene glycol butyl ether.

5. The anti-fingerprint and salt spray resistant tape for OLED modules according to any one of claims 1 to 4, characterized in that: The acrylic resin solution is prepared by the following steps: The solvent is added into the reaction equipment, and the hard monomer, soft monomer and functional monomer are added into the solvent and stirred evenly; under the protection of nitrogen, the initiator is added, and the mixture is heated and refluxed to react, thereby obtaining an acrylate resin solution.

6. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The metal foil layer is any one of aluminum foil, copper foil and stainless steel strip.

7. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The adhesive layer is made of any one of acrylic pressure-sensitive adhesive and silicone pressure-sensitive adhesive.

8. The anti-fingerprint and salt spray resistant tape for OLED modules according to claim 1, characterized in that: The thickness of the anti-fingerprint and salt spray resistant coating is 0.1-2 μm.

9. A method for preparing the anti-fingerprint and salt-spray resistant tape for an OLED module according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, mixing an acrylic resin solution, TEOS and water and refluxing and keeping warm to prepare a coating; S2. diluting the coating with ethanol, applying it on the surface of the metal foil layer, and drying it to form an anti-fingerprint and salt spray resistant coating; S3, applying a pressure-sensitive adhesive to the side of the metal foil away from the anti-fingerprint and salt-spray resistant coating, and curing the adhesive to form an adhesive layer; S4. Laminating a release layer on the surface of the adhesive layer to prepare an anti-fingerprint and salt spray resistant tape for an OLED module.

10. The method for preparing the anti-fingerprint salt spray resistant tape for OLED modules according to claim 9, characterized in that: The reaction temperature in step S1 is 58-65° C., and the reaction time is 5-8 hours. The weight ratio of the coating to ethanol in step S2 is 1:(0.5-1).

Images