A transparent optical film

Abstract

The utility model discloses a kind of transparent optical film in optical film field, including substrate plate and tear strip, the substrate plate is adheredly connected between tear strip, the surface of tear strip is provided with tear part, the surface of substrate plate is provided with reinforcing layer, the reinforcing layer includes including first protective layer, optical glue layer and second protective layer, first protective layer one end face is concave and convex undulating, second protective layer one end face is concave and convex undulating, the concave and convex undulating end face of first protective layer and the concave and convex undulating end face of second protective layer are misaligned opposite;A kind of transparent optical film of the utility model, by setting reinforcing layer on substrate plate surface, including first protective layer, optical glue layer and second protective layer, wherein the concave and convex undulating end face of first and second protective layer is misaligned opposite, effectively enhance the impact resistance of film, prevent scratch or damage due to external impact during use.

Description

Technical Field

[0001] This utility model relates to the field of optical film, specifically a transparent optical film. Background Technology

[0002] Optical film is a transparent thin film material used for display, touch, optical protection, or optical bonding. It is widely used in mobile phones, tablets, automotive displays, industrial control instruments, and large-size public screens. It is usually composed of multiple functional films, combining light transmittance, adhesion, and certain mechanical protection properties, and is an indispensable component of display modules such as LCDs and OLEDs.

[0003] Existing optical films have the following drawbacks: Most films use a three-layer structure of PET substrate + single-layer OC adhesive, with a total thickness of only 0.1–0.2 mm. This results in insufficient bending stiffness, making them prone to creases and warping during handling, lamination, or drops. The functional layers are only bonded with planar adhesive, lacking three-dimensional interlocking or corrugated reinforcement. Under stress, slippage and delamination easily occur between layers, leading to a decrease in overall strength. Furthermore, because the stacked OCA optical films are not effectively protected during handling, they are easily bent and impacted, especially by external forces from the top and bottom. Damage to the optical adhesive layer affects the manufactured electronic products, causing display quality issues. Optical adhesive is typically bonded to the surface of touchscreens. Frequent finger pressure during use can cause cracks in the optical adhesive, and because it is usually thin, excessive force during application can tear it. The film has a right-angle cut side without edge sealing or reinforcement. When dropped laterally, the edge hits the ground first, resulting in a high stress concentration factor and making it prone to edge chipping and corner breakage, which can then spread throughout the entire visible area. Therefore, existing optical films still suffer from low structural strength and poor impact and collision resistance, requiring further improvement. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a transparent optical film that can effectively solve the technical problems of low structural strength and poor impact and collision resistance of existing optical films.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a transparent optical film, including a substrate and a tear strip, wherein the substrate and the tear strip are bonded together, the surface of the tear strip is provided with a tear portion, the surface of the substrate is provided with a reinforcing layer, the reinforcing layer includes a first protective layer, an optical adhesive layer and a second protective layer, one end face of the first protective layer is undulating, one end face of the second protective layer is undulating, the undulating end faces of the first protective layer and the undulating end faces of the second protective layer are misaligned and opposite, the surface of the reinforcing layer is provided with a rigid film with the same shape as the substrate, the outer surface of the rigid film is wrapped with a packaging shaping film, and the side of the substrate is provided with a mounting block, the mounting block being made of carbon fiber material.

[0006] Furthermore, the rigid film is made of PC film.

[0007] Furthermore, the substrate includes an oleophobic layer, an anti-blue light layer, a reinforcing layer, a high-temperature resistant layer, and a release layer stacked sequentially, and the oleophobic layer, the anti-blue light layer, the reinforcing layer, the high-temperature resistant layer, and the release layer are all bonded together.

[0008] Furthermore, the oleophobic layer is made of an organic fluorine material, the anti-blue light layer is made of a salicylic acid ester material, the high-temperature resistant layer is made of a high-temperature resistant organic silicone material, and the release layer is made of PET material.

[0009] Furthermore, the first protective layer, the optical adhesive layer, and the second protective layer are all made of acrylic adhesive material, the thickness of the first protective layer and the second protective layer are the same, and the thickness of the optical adhesive layer is greater than the sum of the thicknesses of the first protective layer and the second protective layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a transparent optical film. By setting a reinforcing layer on the surface of a substrate, including a first protective layer, an optical adhesive layer, and a second protective layer, the concave and convex end faces of the first and second protective layers are misaligned and opposite, effectively enhancing the impact resistance of the film and preventing scratches or damage caused by external impacts during use. The rigid film has the same shape as the substrate and is wrapped in a packaging and shaping film to protect the film from damage during transportation and storage. The carbon fiber mounting blocks on the side of the substrate further enhance the mechanical strength of the substrate, improving its impact resistance and preventing damage to the side of the substrate from impacts, thus greatly improving the impact resistance and anti-collision capability of the optical film. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a transparent optical film according to the present invention;

[0012] Figure 2This is a schematic diagram of the structure of a substrate plate for a transparent optical film according to the present invention;

[0013] Figure 3 This is a schematic diagram of the reinforcing layer of a transparent optical film according to the present invention.

[0014] Numbering on the map:

[0015] 1-Substrate board; 2-Tear strip; 3-Reinforcing layer; 4-Rigid film; 5-Packaging shaping film; 6-Mounting block; 7-Tear section; 8-Oleophobic layer; 9-Anti-blue light layer; 10-Reinforcing layer; 11-High temperature resistant layer; 12-Release layer; 13-First protective layer; 14-Optical adhesive layer; 15-Second protective layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The following is combined with Figures 1-3 A detailed description of a transparent optical film according to this utility model is provided:

[0018] A transparent optical film includes a substrate 1 and a tear strip 2, which are bonded together. The tear strip 2 has a tear portion 7 on its surface. A reinforcing layer 3 is provided on the surface of the substrate 1. The reinforcing layer 3 includes a first protective layer 13, an optical adhesive layer 14, and a second protective layer 15. One end face of the first protective layer 13 and one end face of the second protective layer 15 are undulating, and the undulating end faces of the first and second protective layers are misaligned. A rigid film 4 with the same shape as the substrate 1 is provided on the surface of the reinforcing layer 3. A packaging and shaping film 5 is wrapped around the outer surface of the rigid film 4. A mounting block 6 made of carbon fiber is provided on the side of the substrate 1. The substrate 1 is the core load-bearing structure of the entire film, consisting of multiple functional layers stacked and bonded together, from the outside to the inside: an oleophobic layer 8, an anti-blue light layer 9, a reinforcing layer 10, a high-temperature resistant layer 11, and a release layer 12. Oleophobic Layer 8: Made of organic fluorine material, its extremely low surface energy effectively prevents fingerprints and stains from adhering to the film surface. In daily use, such as when using transparent optical films in devices like mobile phones and tablets, Oleophobic Layer 8 keeps the screen clean, preventing oil and fingerprints from affecting display quality and maintaining the film's high transparency for clear vision. Anti-Blue Light Layer 9: Made of salicylate, this layer's main function is to absorb harmful blue light. With prolonged use of electronic devices, the harmful effects of blue light on the eyes are increasingly concerning. Anti-blue light layer 9 filters out some blue light, effectively reducing eye fatigue and protecting user vision, making it particularly suitable for people who spend long hours in front of electronic screens. Reinforcing Layer 10: This layer increases the surface hardness of the film, enhancing its wear resistance and scratch resistance. In practical use, the film inevitably comes into contact with various objects; Reinforcing Layer 10 prevents the film surface from being easily scratched, maintaining good appearance and optical performance, and extending the film's lifespan. High-Temperature Resistant Layer 11: Made of high-temperature resistant silicone material, ensuring the film maintains stable performance under high-temperature environments. For example, in some high-temperature processing processes, or when using electronic devices in hot environments, the film will not deform, discolor, or degrade due to high temperatures, ensuring its optical performance and structural stability. Release Layer 12: Made of PET material, its main function is to facilitate the separation and installation of the film. During the film production process, release layer 12 ensures that the film does not shed powder or leave adhesive residue during die-cutting and lamination, improving production efficiency. For users, release layer 12 can be easily peeled off when installing the film, allowing the film to be smoothly adhered to the surface of the target object without leaving any adhesive residue that would affect the performance. Tear Strip 2: Tear strip 2 is bonded to the substrate 1, and its surface is provided with a tear portion 7. During the use of the film, the user can easily tear open the tear strip 2 by grasping the tear portion 7, thereby separating the film from the packaging or other carrier, facilitating installation and use, and providing operational convenience.

[0019] The rigid film 4 is made of PC film. The substrate 1 includes an oleophobic layer 8, an anti-blue light layer 9, a reinforcing layer 10, a high-temperature resistant layer 11, and a release layer 12 stacked sequentially. The oleophobic layer 8, anti-blue light layer 9, reinforcing layer 10, high-temperature resistant layer 11, and release layer 12 are all bonded together. The oleophobic layer 8 is made of fluorine-based material, the anti-blue light layer 9 is made of salicylic acid ester, the high-temperature resistant layer 11 is made of high-temperature resistant silicone, and the release layer 12 is made of PET. The first protective layer 13, optical adhesive layer 14, and second protective layer 15 are all made of acrylic adhesive. The thickness of the first protective layer 13 and the second protective layer 15 is the same, while the thickness of the optical adhesive layer 14 is greater than the sum of the thicknesses of the first protective layer 13 and the second protective layer 15. The first protective layer 13 and the second protective layer 15 both have an undulating end face, and these undulating end faces are staggered. This special structural design effectively enhances the impact resistance of the film. When the film is impacted by external force, its uneven surface can disperse the impact force, reduce localized stress, and prevent scratches or damage caused by external impact, thus providing good protection for the substrate 1. Simultaneously, because they are made of acrylic adhesive, they also possess certain optical properties and do not affect the overall transparency of the film. Optical adhesive layer 14: Its thickness is greater than the sum of the thicknesses of the first protective layer 13 and the second protective layer 15. Optical adhesive layer 14 not only serves to bond the first and second protective layers 13 and 15 to the substrate 1, but also further enhances the overall strength of the film. It can fill the gap between the first and second protective layers 13 and 15, ensuring the stability and continuity of the entire reinforcing layer 3, thereby better protecting the substrate 1 and extending the film's service life. Furthermore, the acrylic optical adhesive layer 14 has good optical properties, ensuring the film's high transparency and optical uniformity. Rigid film 4: Made of PC film, it has high transparency, good weather resistance, and mechanical strength. High transparency ensures that the film does not affect light transmission during use, guaranteeing visual effects. Its excellent weather resistance effectively resists ultraviolet radiation, preventing yellowing or performance degradation of the film during long-term use and ensuring long-term stability of optical performance. Mechanical strength allows the film to withstand certain external forces, protecting the internal substrate 1 from damage. The rigid film 4 has the same shape as the substrate 1 and fits tightly against its surface, providing additional protection against damage caused by collisions, compression, etc., during transportation and storage. Packaging shaping film 5: Wrapped around the outer surface of the rigid film 4, further protecting it from damage during transportation and storage. It prevents scratches, dust contamination, or other external factors from affecting the surface of the rigid film 4, ensuring the film arrives in good condition. Mounting block 6: Located on the side of the substrate 1, made of carbon fiber. Carbon fiber has high strength and low density, further enhancing the mechanical strength of the substrate 1.Especially when the side of the substrate 1 is impacted, the mounting block 6 can absorb and disperse the impact force, improve the impact resistance of the substrate 1, and prevent the side of the substrate 1 from being damaged by impact, thereby greatly improving the impact resistance and anti-collision capability of the entire optical film.

[0020] In this embodiment, the rigid film 4 is made of PC film, which has high transparency, good weather resistance, and mechanical strength. PC film effectively resists ultraviolet radiation, preventing yellowing or performance degradation during long-term use and ensuring long-term stability of optical performance. The multi-layer structure design of the substrate 1 includes an oleophobic layer 8, an anti-blue light layer 9, a reinforcing layer 10, a high-temperature resistant layer 11, and a release layer 12, giving the film multiple functional characteristics. The oleophobic layer 8 effectively prevents fingerprints and stains from adhering, maintaining the film's cleanliness and transparency; the anti-blue light layer 9 filters harmful blue light, protecting the user's eyesight; the reinforcing layer 10 increases the surface hardness of the film, enhancing its wear resistance and scratch resistance; the high-temperature resistant layer 11 ensures the film maintains stable performance even at high temperatures; and the release layer 12 facilitates the separation and installation of the film, improving ease of use. The oleophobic layer 8 is made of organic fluorine material, which has extremely low surface energy, making it difficult for water and oil to adhere, maintaining the cleanliness and high transparency of the film surface. The anti-blue light layer 9 uses a salicylate-based material, which effectively absorbs blue light and reduces its harmful effects on the eyes. The high-temperature resistant layer 11 uses a high-temperature resistant silicone material, ensuring that the film will not deform or degrade in high-temperature processing or usage environments. The release layer 12 uses PET material, providing excellent peel performance and ensuring that the film does not shed powder or leave residue during die-cutting and lamination, guaranteeing production efficiency and product quality. The first protective layer 13, optical adhesive layer 14, and second protective layer 15 are all made of acrylic adhesive, ensuring good optical and adhesive properties. The first protective layer 13 and the second protective layer 15 have the same thickness, and the thickness of the optical adhesive layer 14 is greater than the sum of the two. This design not only improves the adhesive strength of the film but also enhances the protection of the substrate 1, preventing damage to the substrate 1 from external impacts and scratches, and extending the service life of the film.

[0021] This embodiment of a transparent optical film includes a reinforcing layer 3 on the surface of a substrate 1, comprising a first protective layer 13, an optical adhesive layer 14, and a second protective layer 15. The uneven end faces of the first and second protective layers 15 are misaligned, effectively enhancing the film's impact resistance and preventing scratches or damage from external impacts during use. A rigid film 4 has the same shape as the substrate 1 and is wrapped with a shaping film 5 to protect the film from damage during transportation and storage. Carbon fiber mounting blocks 6 on the side of the substrate 1 further enhance the mechanical strength of the substrate 1, improving its impact resistance and preventing damage to the side of the substrate 1 from impacts. This significantly improves the impact resistance and anti-collision capability of the optical film.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A transparent optical film, comprising a substrate and a tear strip, wherein the substrate and the tear strip are bonded together, and the surface of the tear strip is provided with a tear portion, characterized in that: The substrate has a reinforcing layer on its surface, which includes a first protective layer, an optical adhesive layer, and a second protective layer. One end face of the first protective layer is undulating, and one end face of the second protective layer is undulating. The undulating ends of the first and second protective layers are misaligned and opposite to each other. A rigid film with the same shape as the substrate is provided on the surface of the reinforcing layer. A packaging and shaping film is wrapped around the outer surface of the rigid film. A mounting block is provided on the side of the substrate, and the mounting block is made of carbon fiber.

2. The transparent optical film according to claim 1, characterized in that: The rigid film is made of PC film.

3. The transparent optical film according to claim 1, characterized in that: The substrate includes an oleophobic layer, an anti-blue light layer, a reinforcing layer, a high-temperature resistant layer, and a release layer stacked sequentially, and the oleophobic layer, the anti-blue light layer, the reinforcing layer, the high-temperature resistant layer, and the release layer are all bonded together.

4. The transparent optical film according to claim 3, characterized in that: The oleophobic layer is made of organic fluorine material, the anti-blue light layer is made of salicylic acid ester material, the high temperature resistant layer is made of high temperature resistant organic silicone material, and the release layer is made of PET material.

5. A transparent optical film according to any one of claims 1-4, characterized in that: The first protective layer, the optical adhesive layer, and the second protective layer are all made of acrylic adhesive. The thickness of the first protective layer and the second protective layer are the same, and the thickness of the optical adhesive layer is greater than the sum of the thicknesses of the first protective layer and the second protective layer.

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