Peeling film for high-temperature-resistant AF display screen

Abstract

The utility model discloses a stripping film for a high-temperature-resistant AF display screen. The stripping film comprises a protective layer I, a stripping layer, an anti-static layer I, a high-temperature-resistant adhesive layer I, an insulating layer I, a carrier layer, an insulating layer II, a high-temperature-resistant adhesive layer II, an anti-static layer II and a protective layer II which are sequentially attached from top to bottom. The PMMA diffusion plate or the ABS plate is selected as the carrier layer, light can be effectively diffused, display of a display screen is more uniform, the occurrence probability of local bright spots and dark spots is remarkably reduced, meanwhile, the stripping film is endowed with certain strength and stability, external stress can be effectively resisted, and deformation is not prone to occurring. Under the high-temperature condition, the high-temperature-resistant adhesive layers I and II can always keep the viscosity and the bonding strength, the layering phenomenon is not prone to occurring, and the reliability and the stability of the stripping film in the high-temperature working environment are guaranteed. The protective layer I and the protective layer II can effectively resist external acting force, firm protection is provided for the stripping film, and the protective effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a release film technical field, especially in kind of stripping film for high temperature resistant AF display screen. BACKGROUND

[0002] AF display screen is a kind of display screen with Anti-Fingerprint function.According to the principle of lotus leaf, a layer of nano chemical material is coated on the surface of glass.This material makes the surface of display screen have strong hydrophobicity, oil stain resistance, Anti-Fingerprint and other characteristics.When the finger contacts the surface of display screen, dirt, fingerprints, oil stains and other impurities are not easy to adhere, even if there is a small amount of adhesion can be easily wiped clean.AF display screen is widely used in various touch screen devices, such as mobile phones, tablet computers, smart watches, smart home devices, etc.The display screen of these devices is often touched by fingers, and AF display screen can keep the screen clean and clear, provide better visual experience and operation feeling.

[0003] Stripping film for AF display screen is a special film used in the production and protection process of AF (Anti-Fingerprint) display screen.During the production process, AF display screen is easily contaminated and damaged by dust, scratches, oil stains and other impurities.Stripping film can provide comprehensive protection for display screen during manufacturing, transportation and storage, ensuring the integrity and cleanliness of the surface of display screen.

[0004] In the production process of AF display screens, there are multiple key links, among which in the process steps such as assembly and welding, a high temperature environment is often generated due to the characteristics of the process itself. For example, in the assembly process, the connection of different components may need to be achieved through heating and pressurization, which makes the ambient temperature of the display screen rise. In the welding process, whether it is traditional soldering or advanced laser welding technology, high temperature will be generated in the local area. In addition, in some specific use scenarios, such as in a high-temperature environment, the AF display screen will also face the influence of continuous high temperature. Under these high-temperature conditions, the performance of the release film used for the AF display screen is easily significantly affected. Specifically, the release force shows a downward trend, because under the action of high temperature, the adhesive components of the release film may soften or partially degrade, causing the adhesion between the release film and the display screen to weaken. At the same time, the release film may also deform, high temperature will change the molecular structure of the film material, lose the original shape stability, and then affect the fit of the display screen. Furthermore, the aging problem will also accelerate in a high-temperature environment, long-term exposure to high temperature will cause the material of the release film to undergo oxidation, thermal decomposition and other chemical reactions, causing its physical and chemical properties to gradually decline. The occurrence of these problems will undoubtedly shorten the service life of the release film, reduce its reliability and stability in the production and use of the AF display screen. Therefore, it is of great practical significance to develop a high-temperature-resistant AF display screen release film. Utility model content

[0005] In view of the above problems, the utility model aims at providing a high-temperature-resistant AF display screen release film with reasonable structure design, high-temperature resistance and good stability.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a technical scheme:

[0007] A high-temperature-resistant AF display screen release film, which comprises a carrier layer, a release layer, a protective layer I, a protective layer II, an anti-static layer I, an anti-static layer II, an insulating layer I, an insulating layer II, a high-temperature-resistant adhesive layer I and a high-temperature-resistant adhesive layer II, the protective layer I, the release layer, the anti-static layer I, the high-temperature-resistant adhesive layer I, the insulating layer I, the carrier layer, the insulating layer II, the high-temperature-resistant adhesive layer II, the anti-static layer II and the protective layer II are sequentially adhered from top to bottom, the carrier layer is a PMMA diffusion plate or an ABS plate, which can effectively diffuse light, make the display of the display screen more uniform, significantly reduce the occurrence probability of local bright spots and dark spots, at the same time, give the release film certain strength and stability, effectively resist external stress and not prone to deformation.

[0008] As a preferred scheme of the utility model, the thickness of the carrier layer is 55-130 microns.

[0009] As a preferred scheme of the utility model, the insulating layer I is a PVDF film with a thickness of 15-25 microns.

[0010] As a preferred scheme of the utility model, the high-temperature resistant adhesive layer I and the high-temperature resistant adhesive layer II are both methyl silicone resin layers or phenyl silicone resin layers with a thickness of 2-6 microns. The high-temperature resistant adhesive layer II is the same as the high-temperature resistant adhesive layer I. The methyl silicone resin layer or the phenyl silicone resin layer can always maintain its adhesion and bonding strength under high-temperature conditions, is not prone to delamination, and ensures the reliability and stability of the release film in a high-temperature working environment.

[0011] As a preferred scheme of the utility model, the anti-static layer I and the anti-static layer II are both PEDOT / PSS conductive films with a thickness of 2-5 microns, and have good anti-static effect.

[0012] As a preferred scheme of the utility model, the release layer is a siloxane layer, a triethyl silicone oil layer, an ethoxyl silicone oil layer or a phenyl methyl silicone oil layer with a thickness of 2-4 microns, and is easy to release.

[0013] As a preferred scheme of the utility model, the protective layer I is a PET film or an OPP film with a thickness of 25-50 microns. The protective layer II is the same as the protective layer I. The PET film or the OPP film has high strength, can effectively resist external forces, and provides firm protection for the release film, so that the release film is not prone to damage when facing various external force impacts.

[0014] The utility model has the advantages that the utility model has reasonable structure design, selects PMMA diffusion plate or ABS plate as the carrier layer, can effectively diffuse light, makes the display of the display screen more uniform, significantly reduces the occurrence probability of local bright spots and dark spots, simultaneously gives the release film certain strength and stability, can effectively resist external stress, and is not prone to deformation. Under high-temperature conditions, the high-temperature resistant adhesive layers I and II can always maintain their adhesion and bonding strength, are not prone to delamination, and ensure the reliability and stability of the release film in a high-temperature working environment. The protective layers I and II can effectively resist external forces, provide firm protection for the release film, so that the release film is not prone to damage when facing various external force impacts, and has good protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the cross-sectional structure schematic view of the utility model. DETAILED DESCRIPTION

[0016] Embodiment: refer to Figure 1The embodiment provides a high-temperature-resistant stripping film for an AF display screen, which comprises a carrier layer 1, a stripping layer 2, a protective layer I 3, a protective layer II 4, an anti-static layer I 5, an anti-static layer II 6, an insulation layer I 7, an insulation layer II 8, a high-temperature-resistant adhesive layer I 9 and a high-temperature-resistant adhesive layer II 10.

[0017] The protective layer I 3, the stripping layer 2, the anti-static layer I 5, the high-temperature-resistant adhesive layer I 9, the insulation layer I 7, the carrier layer 1, the insulation layer II 8, the high-temperature-resistant adhesive layer II 10, the anti-static layer II 6 and the protective layer II 4 are sequentially attached in the order from top to bottom.

[0018] In the embodiment, the carrier layer 1 is preferably a PMMA diffusion plate with a thickness of 100 microns, a haze of 15% and a light transmittance of 75%. The values ensure that most of the light can pass through smoothly, so that the normal display of the AF display screen is not adversely affected. When the light passes through the support layer, a moderate scattering phenomenon occurs at the haze level of 15%. The scattering effect can effectively diffuse the light, so that the display of the display screen is more uniform, and the probability of occurrence of local bright spots and dark spots is significantly reduced. From the mechanical performance aspect, the PMMA diffusion plate also provides reliable mechanical support for the entire stripping film. The material properties give the stripping film certain strength and stability, which can effectively resist external stress and is not prone to deformation. While meeting the mechanical support function, the PMMA diffusion plate also has specific optical properties, namely a certain light transmittance and haze. The existence of such optical properties can fully play the role of diffusing light without affecting the display effect of the AF display screen, thereby optimizing the display uniformity of the display screen and improving the overall visual effect. The support layer finds a balance between mechanical performance and optical performance, providing an important guarantee for the performance optimization of the stripping film for the AF display screen. In other embodiments, the carrier layer 1 can also be an ABS plate with a thickness of 55-130 microns.

[0019] The insulation layer I 7 and the insulation layer II 8 are both preferably PVDF films with a thickness of 20 microns. They have excellent insulation properties, greatly reducing the possibility of conduction and also inhibiting the generation and accumulation of static electricity. In other embodiments, the thickness of the PVDF film can also be 15-25 microns.

[0020] The high-temperature-resistant adhesive layer I 9 and the high-temperature-resistant adhesive layer II 10 are preferably methyl silicone resin layers with a thickness of 2 microns. In other embodiments, the high-temperature-resistant adhesive layer I 9 and the high-temperature-resistant adhesive layer II 10 can also be phenyl silicone resin layers with a thickness of 2-6 microns.

[0021] Methyl silicone and phenyl silicone exhibit extremely excellent high-temperature resistance. Their unique molecular structure and chemical composition endow them with excellent stability in high-temperature environments. Under high-temperature conditions, these two resins can always maintain their adhesion and bonding strength, and even in extremely high-temperature environments, they will not soften, flow, or lose adhesion due to temperature rise. This feature is crucial for the release film for AF display screens used in high-temperature environments, ensuring the reliability and stability of the release film in high-temperature working environments. In addition, methyl silicone and phenyl silicone also have good chemical stability and weather resistance. Their molecular structure enables them to effectively resist the erosion of various chemicals, whether acidic, alkaline, or other corrosive chemicals. At the same time, these two resins have strong resistance to environmental factors, such as temperature changes, humidity changes, and ultraviolet radiation. This excellent chemical stability and weather resistance can significantly extend the service life of the release film, ensuring that the release film maintains good performance during long-term use. In high-temperature environments, the methyl silicone layer or the phenyl silicone layer can firmly bond the insulating layer I7 and the anti-static layer I5, as well as the insulating layer II8 and the anti-static layer II6. Through its strong bonding force, it ensures the stability of the structure of the release film, and prevents problems such as delamination and peeling due to high temperatures or other external factors, ensuring the integrity and performance of the display screen.

[0022] The anti-static layer I5 and the anti-static layer II6 are both preferably PEDOT / PSS conductive films with a thickness of 5 microns, which have good anti-static effect. In other embodiments, the thickness of the PEDOT / PSS conductive film can also be 2-5 microns.

[0023] The release layer 2 is preferably a phenyl methyl silicone oil layer with a thickness of 2 microns, which is easy to release. In other embodiments, the release layer 2 can also be a silicone layer, a triethyl silicone oil layer, or an ethoxy silicone oil layer with a thickness of 2-4 microns.

[0024] The protective layer I3 and the protective layer II4 are both preferably PET films with a thickness of 35 microns. In other embodiments, the protective layer I3 and the protective layer II4 can also be OPP films with a thickness of 25-50 microns.

[0025] From the perspective of mechanical properties, PET films and OPP films both have high strength, and their molecular structure and crystalline morphology endow them with excellent tensile, compression, and impact resistance, effectively resisting external forces and providing solid protection for the release film, making it less likely to be damaged when subjected to various external force impacts. At the same time, they also have excellent wear resistance, and even if they come into contact or rub against other objects during transportation, storage, and use, they can effectively prevent the release film surface from being worn, ensuring the integrity and functionality of the release film.

[0026] In addition, the PET film and the OPP film also exhibit good light transmittance and flexibility. In terms of light transmittance, the two films have high light transmittance, allowing most of the light to pass through smoothly without significantly obstructing or interfering with the display effect of the display screen. The good light transmittance ensures that the image of the display screen can be clearly presented to the user, ensuring the display quality. In terms of flexibility, they have excellent bendability and foldability, which can adapt to the shape changes such as bending and folding of the display screen in different use scenarios. This flexibility allows the release film to closely fit the curved or folded parts of the display screen, without breaking, delaminating, or causing any adverse effects on the display effect of the display screen.

[0027] In production, a PMMA diffusion plate is selected as the carrier layer 1. PVDF films are laminated on the upper and lower surfaces of the carrier layer 1 to form the insulating layer I 7 and the insulating layer II 8, respectively.

[0028] Methyl silicone resin is coated on the insulating layer I 7 and the insulating layer II 8 to form the high-temperature-resistant adhesive layer I 9 and the high-temperature-resistant adhesive layer II 10, respectively.

[0029] PEDOT / PSS suspension is coated on the high-temperature-resistant adhesive layer I 9 and the high-temperature-resistant adhesive layer II 10 using a micro-concave roller, with a curing temperature of 60-120 degrees. After curing, the anti-static layer I 5 and the anti-static layer II 6 are formed, respectively.

[0030] The release layer 2 is formed by coating on the anti-static layer I 5 using a micro-concave roller or a doctor blade, with a curing temperature of 150 degrees.

[0031] The PET film is laminated on the release layer 2 and the anti-static layer II 6 to form the protective layer I 3 and the protective layer II 4, respectively, and the high-temperature-resistant AF display screen release film is obtained.

[0032] According to the disclosure and teachings of the above specification, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present application should fall within the scope of protection of the claims of the present application. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application, and other release films with the same or similar functions are also within the scope of protection of the present application.

Claims

1. A release film for a high-temperature resistant AF display screen, comprising a carrier layer and a release layer, characterized in that, It also includes an insulating layer, a protective layer I, a protective layer II, an antistatic layer I, an antistatic layer II, an insulating layer I, an insulating layer II, a high-temperature resistant adhesive layer I, and a high-temperature resistant adhesive layer II. The protective layer I, the release layer, the antistatic layer I, the high-temperature resistant adhesive layer I, the insulating layer I, the carrier layer, the insulating layer II, the high-temperature resistant adhesive layer II, the antistatic layer II, and the protective layer II are sequentially bonded together in a top-to-bottom order. The carrier layer is a PMMA diffusion plate or an ABS plate.

2. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, The thickness of the carrier layer is 55–130 micrometers.

3. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, The insulating layer I is a PVDF film with a thickness of 15 to 25 micrometers.

4. The high-temperature resistant AF display screen release film according to claim 1 or 3, characterized in that, The insulating layer II is the same as the insulating layer I.

5. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, Both the high-temperature resistant adhesive layer I and the high-temperature resistant adhesive layer II are methyl silicone resin layers or phenyl silicone resin layers with a thickness of 2 to 6 micrometers.

6. The high-temperature resistant AF display screen release film according to claim 1 or 5, characterized in that, The high-temperature resistant adhesive layer II is the same as the high-temperature resistant adhesive layer I.

7. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, Both the antistatic layer I and the antistatic layer II are PEDOT / PSS conductive films with a thickness of 2 to 5 micrometers.

8. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, The release layer is a siloxane layer, triethyl silicone oil layer, ethoxy silicone oil layer, or phenylmethyl silicone oil layer with a thickness of 2 to 4 micrometers.

9. The high-temperature resistant AF display screen release film according to claim 1, characterized in that, The protective layer I is a PET film or OPP film with a thickness of 25 to 50 micrometers.

10. The high-temperature resistant AF display screen release film according to claim 1 or 9, characterized in that, The protective layer II is the same as the protective layer I.

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