Blue light blocking hydrogel film

Abstract

The utility model relates to the technical field of water -setting membrane, especially a kind of anti-blue light water -setting membrane, including protective film, main membrane body and bottom film, main membrane body includes repair coating, substrate layer and viscose layer;Repair coating is connected on the upper surface of substrate layer, viscose layer is bonded on the lower surface of substrate layer;The back of protective film is attached to the upper surface of repair coating by release adhesive, viscose layer is attached to bottom film.The utility model realizes surface scratch repair by repair coating in main membrane body, solves the problem that the existing anti-blue light water -setting membrane is easily scratched by hard object due to no effective scratch repair structure on surface to produce permanent scratch, leading to screen transparency decline, appearance damage, service life shortening.

Description

Technical Field

[0001] This utility model relates to the field of hydrogel membrane technology, and in particular to a blue light blocking hydrogel membrane. Background Technology

[0002] As smartphones, tablets, and other electronic devices move towards curved screens and high refresh rates, hydrogel films, with their flexibility and blue light filtering capabilities, have become the mainstream choice for screen protection.

[0003] However, existing blue light blocking screen protectors still have significant shortcomings in structural design and performance optimization: most screen protectors do not have effective scratch repair structures on their surface, and are easily scratched by hard objects such as keys and fingernails during use, resulting in permanent scratches, reduced screen transparency, damage to appearance, and shortened lifespan of the screen protector. Therefore, it is necessary to improve them. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a blue light blocking hydrogel film. This film achieves surface scratch repair through a repair coating in the main film body, thus solving the problem that existing blue light blocking hydrogel films are prone to permanent scratches caused by hard objects due to the lack of an effective scratch repair structure, resulting in decreased screen transparency, damaged appearance, and shortened lifespan.

[0005] To achieve the above objectives, the present invention provides an anti-blue light hydrogel film, comprising a protective film, a main film body, and a base film, wherein the main film body comprises a repair coating, a substrate layer, and an adhesive layer; The repair coating is attached to the upper surface of the substrate layer, and the adhesive layer is bonded to the lower surface of the substrate layer; The back of the protective film is attached to the upper surface of the repair coating with release adhesive. The adhesive layer is attached to the base film.

[0006] Preferably, the repair coating is a PU layer, and the thickness of the repair coating is 10-35 μm; The substrate layer is an EPU layer, a TPH layer, a TPU layer, a privacy layer, a blue light EPU layer, a blue light TPH layer, or a blue light TPU layer, and the thickness of the substrate layer is 70-115μm±5μm; The adhesive layer is a silicone pressure-sensitive adhesive layer or an OCA layer, and the thickness of the adhesive layer is 30-40μm±5μm.

[0007] Preferably, the thickness of the repair coating is 35μm±5μm; The substrate layer is a TPH layer with a thickness of 115μm±5μm; The adhesive layer is a silicone pressure-sensitive adhesive layer with a thickness of 30μm±5μm.

[0008] Preferably, the thickness of the repair coating is 15μm±3μm; The substrate layer is a TPH layer with a thickness of 70μm±5μm; The adhesive layer is an OCA layer with a thickness of 40μm±5μm.

[0009] Preferably, the thickness of the repair coating is 10μm±5μm; The substrate layer is a TPU layer with a thickness of 100μm±5μm; The adhesive layer is an OCA layer with a thickness of 40μm±5μm.

[0010] Preferably, the thickness of the repair coating is 30μm±5μm; The substrate layer is an EPU layer with a thickness of 115μm±5μm; The adhesive layer is an OCA layer with a thickness of 35μm±5μm.

[0011] Preferably, the thickness of the repair coating is 15μm±3μm; The substrate layer is a privacy shield, and the thickness of the privacy shield is 110μm±15μm; The adhesive layer is an OCA layer with a thickness of 40μm±5μm.

[0012] Preferably, the thickness of the repair coating is 30μm±5μm; The substrate layer is a blue light EPU layer, and the thickness of the blue light EPU layer is 115μm±5μm; The adhesive layer is an OCA layer with a thickness of 35μm±5μm.

[0013] Preferably, the thickness of the repair coating is 15μm±3μm; The substrate layer is a blue light TPH layer, and the thickness of the blue light TPH layer is 70μm±5μm; The adhesive layer is an OCA layer with a thickness of 40μm±5μm.

[0014] Preferably, the thickness of the repair coating is 10μm±5μm; The substrate layer is a blue light TPU layer with a thickness of 100μm±5μm; The adhesive layer is an OCA layer with a thickness of 40μm±5μm.

[0015] The beneficial effects of this utility model are as follows: the surface scratch repair is achieved through the repair coating in the main film, which solves the problem that the existing anti-blue light hydrogel film is easily scratched by hard objects due to the lack of an effective scratch repair structure, resulting in permanent scratches, which leads to reduced screen transparency, damage to appearance and shortened life. At the same time, the substrate layer provides structural support to ensure the flexibility and tensile strength of the main film, the adhesive layer enables temporary fixation with the bottom film and subsequent attachment to the screen of electronic devices, and the protective film with release adhesive protects the repair coating from scratches and contamination and is easy to peel off without residue. The bottom film protects the adhesive layer from contamination failure and ensures the overall flatness of the main film. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the layered structure of this utility model.

[0017] The reference numerals in the figures include: 1. Protective film; 2. Main film body; 21. Repair coating; 22. Substrate layer; 23. Adhesive layer; 3. Bottom film. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the present invention provides a blue light blocking hydrogel film, which includes a protective film 1, a main film body 2 and a bottom film 3. The main film body 2 includes a repair coating 21, a substrate layer 22 and an adhesive layer 23.

[0020] The repair coating 21 is connected to the upper surface of the substrate layer 22, and the adhesive layer 23 is bonded to the lower surface of the substrate layer 22. The repair coating 21 serves as the surface structure of the main film 2 and can repair scratches on the surface of the main film 2. The substrate layer 22 provides structural support for the entire main film 2, ensuring the flexibility and tensile strength of the main film 2. The adhesive layer 23 serves as the bottom bonding structure, realizing the temporary fixation of the main film 2 and the bottom film 3 and subsequent attachment to the screen of electronic devices.

[0021] The back of the protective film 1 is attached to the upper surface of the repair coating 21 with release adhesive, forming an outer protective layer for the repair coating 21. Before transportation, storage, and installation, the protective film 1 can effectively protect the repair coating 21 from scratches by hard objects such as keys and fingernails or dust contamination; the presence of the release adhesive allows the protective film 1 to be easily peeled off without leaving adhesive residue or damaging the repair coating 21.

[0022] The adhesive layer 23 is attached to the base film 3. The base film 3 serves as the carrier and protective structure for the adhesive layer 23. When not in use, the base film 3 prevents the adhesive layer 23 from coming into contact with dust, moisture, or other contaminants in the air, thus preventing the adhesive layer 23 from failing; at the same time, the base film 3 provides support for the adhesive layer 23, ensuring the overall flatness of the main film body 2.

[0023] Preferably, the protective film 1 is a PET film or a PE film, and the thickness of the protective film 1 is 60μm±5μm; this balances the protective performance of the material with a reasonable thickness. PET or PE materials have good scratch resistance and toughness, which can effectively protect the repair coating 21; the thickness of 60μm±5μm prevents the problem of the main film 2 being easily damaged during transportation or use due to being too thin.

[0024] The base film 3 is a fluorinated release film or a PET release film, with a thickness of 75μm±5μm. Choosing a fluorinated or PET release film as the base film 3 and limiting its thickness to 75μm±5μm optimizes release force and support strength. The fluorinated or PET release film possesses stable release properties, allowing the adhesive layer 23 to be easily peeled off the base film 3 without adhesive residue. The 75μm±5μm thickness ensures the support strength of the base film 3, preventing unstable release or breakage of the base film 3 during peeling due to an excessively thin main film 2, thus improving the user's installation experience.

[0025] The repair coating 21 in this embodiment is a PU layer with a thickness of 10-35μm±. Specifically, the PU layer is a polyurethane material layer with self-healing function, which can repair minor scratches and improve the durability of the film surface.

[0026] The excellent ductility and self-healing ability of PU material can effectively repair minor scratches caused by daily use; precise thickness control ensures sufficient repair ability while avoiding the problem of reduced light transmittance caused by excessive thickness.

[0027] The substrate layer 22 is an EPU layer, a TPH layer, a TPU layer, a privacy layer, a blue light EPU layer, a blue light TPH layer, or a blue light TPU layer, and the thickness of the substrate layer 22 is 70-115μm±5μm; The EPU layer is an enhanced polyurethane material layer that optimizes the flexibility, impact resistance, and scratch resistance of ordinary polyurethane while maintaining the skin-friendly feel of polyurethane.

[0028] The TPH layer is a thermoplastic hydrogenated styrene block copolymer material layer, which has a higher hardness than thermoplastic polyurethane, with a Shore hardness of about 80-90A; it has strong wear resistance and is more resistant to scratches from keys / fingernails than thermoplastic polyurethane; it also has good anti-yellowing properties and is not prone to yellowing due to ultraviolet aging.

[0029] The TPU layer is a thermoplastic polyurethane material layer with high elasticity and an elongation at break of 500%-800%; it has strong impact resistance and can absorb the impact force when falling; it has good low temperature resistance and remains soft even at -40℃.

[0030] A privacy screen is a structural layer / coating with privacy protection features. It is typically based on polyethylene terephthalate (PET) and achieves its privacy effect through microstructure design or functional coatings. Light can only pass through within a ±30° range from the front; from angles greater than 30° to the sides, the screen content is obscured, thus solving the privacy leak problem.

[0031] The blue light EPU layer is a reinforced polyurethane material layer containing blue light filters. It retains the flexibility and impact resistance of reinforced polyurethane material while filtering harmful blue light in the 400-450nm wavelength range using blue light absorbers such as benzotriazoles and benzophenones, or blue light reflectors such as nano-titanium dioxide and silica. The filtration rate is typically ≥30%. This addresses the problem of blue light damaging the eyes while maintaining the softness and conformability of the reinforced polyurethane material.

[0032] The blue light TPH layer is a thermoplastic hydrogenated styrene block copolymer material layer containing blue light filter. It retains the high hardness and wear resistance of thermoplastic hydrogenated styrene block copolymer material, while also having blue light filtering function with a filtration rate of ≥30%.

[0033] The blue light TPU layer is a thermoplastic polyurethane material layer containing blue light filter. It retains the high elasticity and curved surface fit of thermoplastic polyurethane material, while also having blue light filtering function with a filtration rate of ≥30%.

[0034] The system utilizes reinforced polyurethane, thermoplastic hydrogenated styrene block copolymer, and thermoplastic polyurethane as base materials, all possessing flexibility and impact resistance. Privacy-protecting materials control viewing angles. These materials, including reinforced polyurethane, thermoplastic hydrogenated styrene block copolymer, and thermoplastic polyurethane containing blue light filters, absorb / reflect blue light. Flexible materials adapt to curved screens, preventing breakage of the main film. The privacy layer limits side viewing angles, protecting user privacy. Materials containing blue light filters specifically target harmful blue light emitted by electronic devices, reducing eye fatigue and meeting diverse application needs.

[0035] The adhesive layer 23 is either a silicone pressure-sensitive adhesive layer or an OCA layer. The silicone pressure-sensitive adhesive layer achieves flexible bonding through its unique molecular structure, adapting to the deformation of the substrate layer 22, such as the bending of a curved screen. It provides a peel force of 800±400g to ensure a stable bond between the adhesive layer 23 and the substrate layer 22, preventing interlayer delamination due to substrate deformation, while maintaining sufficient bonding strength to meet the bonding requirements of curved screens. The OCA layer is an optically transparent adhesive layer that achieves optical-grade bonding through its high-transmittance molecular structure, ensuring that the adhesive layer 23 does not affect the screen display clarity, and achieving stable bonding through a peel force of 300-1000g.

[0036] The thickness of the adhesive layer 23 is 30-40μm±5μm, and the thickness is limited to the range of 30-40μm±5μm to ensure the uniformity of the adhesive material. This ensures the bonding stability of the adhesive layer 23. When the thickness of the adhesive layer 23 is ≥30μm, the adhesive layer 23 can fully fill the fine scratches on the screen surface to achieve seamless bonding; when the thickness of the adhesive layer 23 is ≤40μm, it avoids air bubbles caused by excessive adhesive layer thickness during application, while reducing curing shrinkage of the adhesive layer and preventing the main film 2 from lifting.

[0037] The repair coating 21 in this embodiment has a thickness of 35μm±5μm. This thickness provides a sufficient material basis for the repair function, and tolerance control prevents excessive thickness from affecting thinness or light transmission. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect touch sensitivity or light transmission.

[0038] The substrate layer 22 is a TPH layer with a thickness of 115μm±5μm. The TPH layer is a thermoplastic hydrogenated styrene block copolymer material layer, which has high hardness and wear resistance. The 115μm±5μm thickness provides stable structural support. It improves the scratch resistance of the main membrane 2 and prevents damage to the substrate layer 22; it also provides stable support for the repair coating 21 and adhesive layer 23, preventing deformation of the main membrane 2.

[0039] The adhesive layer 23 is a silicone pressure-sensitive adhesive layer with a thickness of 30μm ± 5μm. The silicone pressure-sensitive adhesive layer has good adhesion, low peel force, and leaves no residue; the 30μm ± 5μm thickness ensures uniform adhesion and appropriate strength. This achieves a stable fit between the main film 2 and the screen, avoiding air bubbles; and leaves no residue upon peeling, facilitating installation and replacement.

[0040] The repair coating 21 in this embodiment has a thickness of 15μm ± 3μm. This thickness provides a sufficient material basis for the repair function, avoiding excessive thickness that could affect the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0041] The substrate layer 22 is a TPH layer with a thickness of 70μm±5μm. The TPH layer is a thermoplastic hydrogenated styrene block copolymer material layer, which has high hardness and wear resistance. The 70μm±5μm thickness provides a stable structural support for the main membrane 2. It improves the scratch resistance of the main membrane 2, prevents damage to the substrate layer 22, and provides stable support for the repair coating 21 and adhesive layer 23, preventing deformation of the main membrane 2.

[0042] The adhesive layer 23 is an OCA layer with a thickness of 40μm±5μm. The OCA layer is an optical adhesive layer with high light transmittance, strong adhesion, and no air bubbles; the 40μm±5μm thickness ensures uniform adhesion and appropriate strength. This achieves a stable bond between the main film 2 and the screen, with high light transmittance not affecting the display effect; the thickness control avoids air bubbles during bonding, facilitating user installation and replacement.

[0043] The repair coating 21 in this embodiment has a thickness of 10μm ± 5μm. This thickness provides a sufficient material basis for the repair function, avoiding excessive thickness that could affect the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0044] The substrate layer 22 is a TPU layer with a thickness of 100μm±5μm. The TPU layer is a thermoplastic polyurethane material layer, which has flexibility and impact resistance. The 100μm±5μm thickness provides stable support for the main film body 2. It maintains the flexibility of the main film body 2, adapts to curved screens, resists impact to prevent damage, and stably supports the repair coating 21 and adhesive layer 23.

[0045] The adhesive layer 23 is an OCA layer with a thickness of 40μm±5μm. The OCA layer is an optical adhesive layer with high light transmittance, strong adhesion, and no air bubbles. The 40μm±5μm thickness ensures uniform adhesion and appropriate strength. This achieves a stable bond between the main film 2 and the screen, ensuring high light transmittance without affecting display quality, avoiding air bubbles during bonding, and facilitating installation and replacement.

[0046] The repair coating 21 in this embodiment has a thickness of 30μm±5μm. This thickness provides a sufficient material basis for the repair function, and tolerance control prevents excessive thickness from affecting the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0047] The substrate layer 22 is an EPU layer with a thickness of 115μm±5μm. The EPU layer is a reinforced polyurethane material layer, possessing flexibility and impact resistance. The 115μm±5μm thickness provides stable structural support for the main film body 2. It maintains the flexibility of the main film body 2, adapts to curved screens, and resists impact to prevent damage. It also provides stable support for the repair coating 21 and adhesive layer 23, preventing deformation of the main film body 2.

[0048] The adhesive layer 23 is an OCA layer with a thickness of 35μm±5μm. The OCA layer is an optical adhesive layer with high light transmittance, strong adhesion, and no air bubbles; the 35μm±5μm thickness ensures uniform adhesion and appropriate strength. This achieves a stable bond between the main film 2 and the screen, with high light transmittance not affecting the display effect; the thickness control avoids air bubbles during bonding, facilitating user installation and replacement.

[0049] The repair coating 21 in this embodiment has a thickness of 15μm ± 3μm. This thickness provides a sufficient material basis for the repair function, avoiding excessive thickness that could affect the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0050] The substrate layer 22 is a privacy layer with a thickness of 110μm±15μm. The privacy layer provides a privacy function, and its 110μm±15μm thickness provides the structural basis for this function while also supporting the upper and lower layers. This achieves the privacy function, limits the viewing angle, stably supports the repair coating 21 and adhesive layer 23, and prevents deformation of the main membrane 2.

[0051] The adhesive layer 23 is an OCA layer with a thickness of 40μm±5μm. The OCA layer is an optical adhesive layer with high light transmittance, strong adhesion, and no air bubbles. The 40μm±5μm thickness ensures uniform adhesion and appropriate strength. It securely adheres to the screen, and the high light transmittance does not affect the display effect. It also avoids air bubbles during adhesion, facilitating installation and replacement.

[0052] The thickness of the repair coating 21 in this embodiment is 30μm±5μm; the thickness of 30μm±5μm ensures the repair function, the tolerance control avoids affecting the performance of the main film 2, effectively repairs surface scratches, and maintains the integrity and optical performance of the main film 2.

[0053] The substrate layer 22 is a blue light EPU layer with a thickness of 115μm±5μm. The blue light EPU layer is an enhanced polyurethane material layer containing blue light filter, which has both blue light filtering and structural support functions. The 115μm±5μm thickness provides stable support, achieves harmful blue light filtering, maintains the structural stability of the main membrane 2, and adapts to curved screens.

[0054] The adhesive layer 23 is an OCA layer with a thickness of 35μm±5μm. The OCA layer is an optical adhesive layer; its optical properties, combined with its 35μm±5μm thickness, ensure bonding quality, achieve bubble-free bonding, maintain high light transmittance, and facilitate installation and maintenance.

[0055] The repair coating 21 in this embodiment has a thickness of 15μm ± 3μm. This thickness provides a sufficient material basis for the repair function, avoiding excessive thickness that could affect the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0056] The substrate layer 22 is a blue light TPH layer with a thickness of 70μm±5μm. The blue light TPH layer is a thermoplastic hydrogenated styrene block copolymer material layer containing blue light filter, possessing both blue light filtering function and scratch resistance. Its 70μm±5μm thickness provides stable structural support for the main membrane 2. This achieves harmful blue light filtering, improves the scratch resistance of the main membrane 2, stably supports the repair coating 21 and adhesive layer 23, and prevents deformation of the main membrane 2.

[0057] The adhesive layer 23 is an OCA layer with a thickness of 40μm±5μm. The OCA layer is an optical adhesive with high light transmittance, strong adhesion, and no air bubbles. The 40μm±5μm thickness ensures uniform adhesion and appropriate strength. It securely adheres to the screen, and the high light transmittance does not affect the display effect. It also avoids air bubbles during adhesion, facilitating installation and replacement.

[0058] The repair coating 21 in this embodiment has a thickness of 10μm ± 5μm. This 10μm ± 5μm thickness provides a sufficient material basis for the repair function, avoiding excessive thickness that could affect the thinness or light transmittance of the main film 2. It effectively repairs minor scratches, maintains the integrity of the main film 2's appearance, and does not affect screen touch sensitivity or light transmission.

[0059] The substrate layer 22 is a blue light TPU layer with a thickness of 100μm±5μm. This blue light TPU layer is a thermoplastic polyurethane material layer containing blue light filter, combining blue light filtering function with the flexibility and impact resistance of TPU. The 100μm±5μm thickness provides stable structural support for the main membrane 2. This achieves harmful blue light filtering, maintains the flexibility of the main membrane 2 to adapt to curved screens, and provides stable support for the repair coating 21 and adhesive layer 23, preventing deformation of the main membrane 2.

[0060] The adhesive layer 23 is an OCA layer with a thickness of 40μm±5μm. The OCA layer is an optical adhesive with high light transmittance, strong adhesion, and no air bubbles; the 40μm±5μm thickness ensures uniform adhesion and appropriate strength. It securely adheres to the screen, and the high light transmittance does not affect the display effect; it avoids air bubbles during adhesion, facilitating user installation and replacement.

[0061] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A blue light blocking hydrogel film, comprising a protective film (1), a main film body (2), and a bottom film (3), characterized in that, The main film (2) includes a repair coating (21), a substrate layer (22), and an adhesive layer (23). The repair coating (21) is attached to the upper surface of the substrate layer (22), and the adhesive layer (23) is attached to the lower surface of the substrate layer (22). The back of the protective film (1) is attached to the upper surface of the repair coating (21) by release adhesive. The adhesive layer (23) is attached to the base film (3).

2. The blue light blocking hydrogel film according to claim 1, characterized in that, The repair coating (21) is a PU layer, and the thickness of the repair coating (21) is 10-35μm; The substrate layer (22) is an EPU layer, a TPH layer, a TPU layer, a privacy layer, a blue light EPU layer, a blue light TPH layer or a blue light TPU layer, and the thickness of the substrate layer (22) is 70-115μm±5μm; The adhesive layer (23) is a silicone pressure-sensitive adhesive layer or an OCA layer, and the thickness of the adhesive layer (23) is 30-40μm±5μm.

3. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 35μm±5μm; The substrate layer (22) is a TPH layer with a thickness of 115μm±5μm; The adhesive layer (23) is a silicone pressure-sensitive adhesive layer with a thickness of 30μm±5μm.

4. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 15μm±3μm; The substrate layer (22) is a TPH layer with a thickness of 70μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 40μm±5μm.

5. The blue light blocking hydrogel film according to claim 3, characterized in that, The thickness of the repair coating (21) is 10μm±5μm; The substrate layer (22) is a TPU layer with a thickness of 100μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 40μm±5μm.

6. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 30μm±5μm; The substrate layer (22) is an EPU layer with a thickness of 115μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 35μm±5μm.

7. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 15μm±3μm; The substrate layer (22) is a privacy shield with a thickness of 110μm±15μm; The adhesive layer (23) is an OCA layer with a thickness of 40μm±5μm.

8. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 30μm±5μm; The substrate layer (22) is a blue light EPU layer with a thickness of 115μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 35μm±5μm.

9. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 15μm±3μm; The substrate layer (22) is a blue light TPH layer with a thickness of 70μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 40μm±5μm.

10. The blue light blocking hydrogel film according to claim 2, characterized in that, The thickness of the repair coating (21) is 10μm±5μm; The substrate layer (22) is a blue light TPU layer with a thickness of 100μm±5μm; The adhesive layer (23) is an OCA layer with a thickness of 40μm±5μm.

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