Multifunctional AB glue combined with blue light blocking peep-proof structure

Abstract

The invention discloses multifunctional AB glue combined with a blue light blocking peep-proof structure. The multifunctional AB glue comprises a first PET release film, a peep-proof blue light structure layer, an anti-static coating, an anti-impact porous structure silica gel layer and a second PET release film, according to the invention, an AB glue structure integrating blue light blocking and preventing and efficient peep-proof functions is integrated, the structure integrates an inorganic nanotechnology and a high polymer material composite technology, accurate absorption and effective shielding of blue light in a specific wave band of 435-440 nm are realized, blue light penetration is effectively suppressed, smooth penetration of visible light in a wide range of 440-780 nm is maintained, and the blue light-blocking peep-proof coating has the advantages of high light-blocking and peep-proof functions, high light-blocking and peep-proof functions and high light-blocking and peep-proof functions. And in order to further improve the visual quality, the design adopts a mode of deeply fusing the blue light blocking solution and the black resin and backfilling the base material, so that not only is the blue light prevention performance enhanced, but also the overall transmittance is up to 73%.

Description

Technical Field

[0001] The invention relates to the technical field of mobile phone protective films, in particular to a multifunctional AB glue combined with a blue light blocking and anti-peeping structure. Background Art

[0002] "Blue light" refers to a blue visible light with a wavelength between 400-500 nanometers, which is commonly found in electronic devices such as the sun, mobile phones, computers, and televisions. Long-term exposure to blue light in this band will cause certain irreversible damage to the user's retina. Therefore, in order to better protect the user's eyes, anti-blue light mobile phone films came into being. The so-called anti-blue light mobile phone films are based on the principle of using blue light blocking technology to convert blue light and achieve effective blocking of blue light. As people's awareness of protecting personal privacy has increased, the demand for tempered films with anti-peeping functions has increased. Various protective products such as mobile phone cases, mobile phone protective soft films, mobile phone protective tempered films, etc. have appeared on the market; but such protective products often have a single functionality. Taking tempered films as an example, they have functions such as anti-blue light, anti-peeping, high transmittance, and impact resistance, but the functionality is relatively single. Tempered films with only one function can no longer meet the market requirements for tempered films.

[0003] Existing mobile phone protective films have the following defects: First, the anti-blue light effect is insufficient, and in order to achieve a higher blue light blocking rate, some blue light films will sacrifice screen brightness, resulting in a noticeable darkening of the screen after application; this not only affects the user experience, but may also increase the burden on the eyes due to long-term use of the mobile phone in a dark light environment, and after the blue light is blocked, the color balance of the screen will be affected, often showing color distortion, yellowish or reddish, and some blue light films will cause a significant change in the screen color temperature while blocking blue light, deviating from the normal display range; this not only affects the color reproduction, but also It may pose a potential threat to the user's visual health. This color difference problem not only affects the visual effect, but also may cause discomfort to the user; secondly, the transmittance of traditional anti-peep gratings is generally 65-68%, which affects the screen brightness and clarity when the user is in use. For modern people who frequently use electronic payments, it is easy for store clerks to scan mobile payment QR codes on their mobile phones and often encounter problems such as not being able to read the QR code; thirdly, it is easy to absorb dust, resulting in dust spots when applying the film, affecting the appearance and feel. In severe cases, dust spots may lift up the tempered film to cause white edges and other adverse conditions. Summary of the invention

[0004] The object of the present invention is to provide a multifunctional AB glue combined with a blue light blocking and anti-peeping structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multifunctional AB glue combined with a blue light blocking and anti-peeping structure, comprising an anti-peeping blue light structure layer, a high-transmittance PET base layer is fixedly connected to an outer wall on one side of the anti-peeping blue light structure layer, an OCA layer is arranged on one side of the high-transmittance PET base layer, and a first PET release film is arranged on one side of the OCA layer.

[0006] As a further technical solution of the present invention, an anti-static coating is provided on the outer wall of the other side of the anti-peep blue light structure layer, a high-transmittance PET film is provided on one side of the anti-static coating, an impact-resistant hole structure silicone layer is provided on one side of the high-transmittance PET film, and a second PET release film is provided on one side of the impact-resistant hole structure silicone layer.

[0007] As a further technical solution of the present invention, the OCA layer adopts high-transmittance OCA glue.

[0008] As a further technical solution of the present invention, the high-transmittance PET base layer is a film made of polyethylene terephthalate polymer by biaxial stretching, and this structure serves as the base material of the anti-peeping layer structural resin.

[0009] As a further technical solution of the present invention, the anti-peeping blue light structural layer is first coated with a layer of structural resin on a high-transparency substrate, which is mainly composed of UV monomer 3, epoxy acrylate resin and UV molding resin, and then a die head with a grating texture is used to emboss long strip grooves, and then backfilled with black resin mixed with the blue light solution, which is composed of fluorescent powder, organic light absorber, ultraviolet absorber, resin and organic filler, and the anti-peeping blue light layer is formed after UV curing.

[0010] As a further technical solution of the present invention, the distance between the bottom of the anti-peeping texture in the anti-peeping blue light structure layer and the bottom wall of the connecting layer is 5 μm, the spacing between adjacent long strip grooves is 35-45 μm, and the depth of the long strip grooves is 75 μm.

[0011] As a further technical solution of the present invention, the mass percentage content of each component in the anti-peeping blue light structure layer is: 10-15% phosphor, 0-10% organic light absorber, 0-10% ultraviolet absorber, 15-20% inorganic filler, and the balance is black resin.

[0012] As a further technical solution of the present invention, the antistatic coating is formed by compounding cations and nonions.

[0013] As a further technical solution of the present invention, the coating is applied to the surface of PET and a heat curing process is performed to finally form an antistatic coating on the PET.

[0014] As a further technical solution of the present invention, the silica gel used in the impact-resistant porous structure silica gel layer is mainly composed of methyl vinyl MQ resin, octamethylcyclotetrasiloxane, polysiloxane and fluorocarbon polymer, wherein the fluorocarbon polymer is used as an additive to achieve a water washing effect.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention integrates the AB glue structure of blue light blocking and efficient anti-peeping function, which integrates inorganic nanotechnology and polymer material composite technology, realizes the precise absorption and effective shielding of blue light in the specific 435nm to 440nm band, effectively curbs the penetration of blue light, while maintaining the smooth transmission of visible light in a wide range of 440nm to 780nm, ensuring that the visual experience is not affected, and the screen brightness attenuation and color temperature deviation are reduced to the lowest level. In order to further improve the visual quality, this design adopts the method of deep fusion of blue light blocking solution and black resin backfilling the substrate, which not only enhances the blue light protection performance, but also makes the overall The transmittance is as high as 73%, which greatly reduces the negative impact of the anti-peep design on the screen brightness and clarity, allowing users to obtain high-definition vision without losing the eye protection effect. In addition, anti-static coating technology is added as a protective barrier to effectively prevent the problem of dust particles being adsorbed by static electricity during the peeling process of the release film, thereby maintaining the cleanliness and beauty of the screen. Furthermore, the innovative hole structure design of the silicone layer has excellent dust capture capabilities and can easily wrap and fix tiny dust with a diameter of less than 0.3mm, fundamentally eliminating visual defects such as white edges formed by dust particles lifting the edge of the tempered film, ensuring that the edge of the screen fits perfectly and looks new for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of each layer of the present invention;

[0017] Figure 2 Microscopic cross section of the blue light blocking solution mixed with black resin backfilled substrate in the present invention Figure 1 ;

[0018] Figure 3 Microscopic cross section of the blue light blocking solution mixed with black resin backfilled substrate in the present invention Figure 2 ;

[0019] Figure 4 This is a blue light property parameter diagram of the anti-peeping method of the present invention;

[0020] Figure 5 This is a 380-460nm blue light transmittance test chart of the present invention.

[0021] In the figure: 1. First PET release film; 2. OCA layer; 3. High-transmittance PET base layer; 4. Anti-peeping blue light structure layer; 5. Anti-static coating; 6. High-transmittance PET film; 7. Impact-resistant hole structure silicone layer; 8. Second PET release film. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please see attached Figure 1 -Attached Figure 5, an embodiment provided by the present invention: a multifunctional AB glue combined with a blue light blocking anti-peeping structure, comprising an anti-peeping blue light structure layer 4, a high-transmittance PET base layer 3 is fixedly connected to an outer wall on one side of the anti-peeping blue light structure layer 4, an OCA layer 2 is arranged on one side of the high-transmittance PET base layer 3, and a first PET release film 1 is arranged on one side of the OCA layer 2; an anti-static coating 5 is arranged on the outer wall on the other side of the anti-peeping blue light structure layer 4, a high-transmittance PET film 6 is arranged on one side of the anti-static coating 5, an impact-resistant hole structure silicone layer 7 is arranged on one side of the high-transmittance PET film 6, and a second PET release film 8 is arranged on one side of the impact-resistant hole structure silicone layer 7; the OCA layer 2 adopts a high-transmittance OCA glue, the thickness of OCA layer 2 is 230μm; the high-transmittance PET base layer 3 is a film made of polyethylene terephthalate polymer by biaxial stretching, which is used as the substrate of the anti-peeping layer structural resin under this structure, and the thickness is 23μm; the anti-peeping blue light structural layer 4 is first coated with a layer of structural resin on the high-transparency substrate, which is mainly composed of UV monomer 3, epoxy acrylate resin and UV molding resin, and then a die head with a grating texture is used to emboss a long strip groove, and then backfilled with black resin mixed with blue light solution, which is composed of fluorescent powder, organic light absorber, ultraviolet absorber, resin and organic filler. After UV curing, an anti-peeping blue light layer is formed. Due to the reduction A superposition state is formed, which can eliminate the overlapping phenomenon caused by the difference in the refractive index of the resin, thereby improving the transmittance of the anti-peep film. The thickness of this layer is 90μm; the distance between the bottom of the groove of the anti-peep texture in the anti-peep blue light structure layer 4 and the bottom wall of the connecting layer is 5μm, the spacing between adjacent long strip grooves is 35-45μm, and the depth of the long strip groove is 75μm; the mass percentage content of each component in the anti-peep blue light structure layer 4 is: phosphor 10-15%, organic light absorber 0-10%, ultraviolet absorber 0-10%, inorganic filler 15-20%, and the balance is black resin; the antistatic coating 5 is compounded by cations and non-ions; due to the synergistic effect, this composite The material has both the excellent characteristics of cationic antistatic performance and the stability of non-ionic antistatic agent; it is attached to the PET surface by coating, and after a thermal curing process, a layer of antistatic coating is finally formed on the PET; the silicone used in the impact-resistant porous structure silicone layer 7 is mainly composed of methyl vinyl MQ resin, octamethylcyclotetrasiloxane, polysiloxane and fluorocarbon polymer, among which fluorocarbon polymer as an additive can achieve a water washing effect. Under the microscopic observation of low-viscosity silicone, its surface is covered with many porous structures, which is very beneficial for exhaust. When the thickness of the silicone reaches more than 60 microns, these holes can effectively wrap up the dust.

[0024] Working principle: The present invention provides a multifunctional AB glue combined with a blue light blocking and anti-peeping structure, which assembles and uses a first PET release film 1, an OCA layer 2, a high-transmittance PET base layer 3, an anti-peeping blue light structure layer 4, an anti-static coating 5, a high-transmittance PET film 6, an impact-resistant hole structure silicone layer 7, and a second PET release film 8. The first PET release film 1 and the second PET release film 8 are both made of general PET polyester film, which are used as optical light release film and optical heavy release film respectively under this structure. The OCA layer 2 is made of high-transmittance OCA glue, which has high transmittance and low haze, and has little effect on the reflectivity of the anti-reflection film. The light-cured OCA has good flatness, and the transmittance will be improved after laminating the anti-peeping substrate. The thickness under this structure is 230μm. The high-transmittance PET base layer 3 and the high-transmittance PET film 6 are both films made of polyethylene terephthalate polymer by biaxial stretching. The optical-grade PET polyester film has the characteristics of high light transmittance, low haze, high brightness, no yellowing, good adhesion, good flatness, no light and dark lines, high temperature and ultraviolet radiation resistance, good stiffness, anti-burning and cracking, and not easy to break. In this structure, the substrate of the anti-peeping layer structural resin has a thickness of 23μm and 50μm respectively. The anti-peeping blue light structural layer 4: at high A layer of structural resin (mainly composed of UV monomer 3, epoxy acrylate resin, and UV molding resin) is first applied to the transparent substrate, and a die head with a grating texture is used to emboss a long strip groove. The distance between the bottom of the anti-peep texture groove and the bottom wall of the connecting layer is 5 μm, the distance between adjacent long strip grooves is 35-45 μm, and the depth of the long strip groove is 75 μm. Then, the black resin (composed of phosphor, organic light absorber, ultraviolet absorber, resin and organic filler) mixed with the blue light solution is backfilled. The mass percentage of each component is: phosphor 10-15%, organic light diffusion powder 0-10%, ultraviolet absorber 0-1 0%, inorganic filler 15-20%, black resin as the balance), after UV curing, an anti-peeping blue light layer is formed. Since one layer of superposition is reduced, the overlapping phenomenon caused by the difference in the refractive index of the resin can be eliminated, and the transmittance of the anti-peeping film can be increased. The thickness is 90μm. The anti-static coating 5 is compounded by cationic and non-ionic. Due to the synergistic effect, it has both excellent cationic antistatic performance and good stability of non-ionic antistatic agents. It is attached to the PET surface by coating and formed into an anti-static coating after thermal curing. The thickness is 20μm. The impact-resistant pore structure silicone layer 7 is mainly composed of methyl vinyl MQ resin;It is composed of octamethylcyclotetrasiloxane, polysiloxane, and fluorocarbon polymer (additives can achieve the effect of water washing). The microscopic lower surface of low-viscosity silica gel has many pore structures, which are very conducive to exhaust. When the thickness of silica gel reaches more than 60μm, these pores can effectively wrap dust. The impact resistance of the present invention is 64g / 150cm for the ordinary second-strength tempered film, and this AB glue can be increased to 130g / 150cm. It can ensure that the blue light blocking rate is greater than 30%, accurately block harmful blue light 435-440nm band, and ensure that the screen brightness attenuation rate is less than 30%, and the color temperature change is less than 350K. ;

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A multifunctional AB glue combined with a blue light blocking anti-peeping structure, comprising an anti-peeping blue light structure layer (4), characterized in that: A high-transmittance PET base layer (3) is fixedly connected to an outer wall of one side of the anti-peeping blue light structural layer (4), an OCA layer (2) is arranged on one side of the high-transmittance PET base layer (3), and a first PET release film (1) is arranged on one side of the OCA layer (2).

2. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 1, characterized in that: An antistatic coating (5) is arranged on the outer wall of the other side of the anti-peeping blue light structural layer (4), a high-transmittance PET film (6) is arranged on one side of the antistatic coating (5), an impact-resistant porous structure silicone layer (7) is arranged on one side of the high-transmittance PET film (6), and a second PET release film (8) is arranged on one side of the impact-resistant porous structure silicone layer (7).

3. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 1, characterized in that: The OCA layer (2) is made of high-transmittance OCA glue.

4. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 1, characterized in that: The high-transmittance PET base layer (3) is a film made of polyethylene terephthalate polymer by biaxial stretching, and serves as the base material of the anti-peeping layer structural resin under this structure.

5. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 1, characterized in that: The anti-peeping blue light structural layer (4) is first coated with a layer of structural resin on a high-transparency substrate, which is mainly composed of UV monomer 3, epoxy acrylate resin and UV molding resin, and then a die head with a grating texture is used to emboss a long strip groove, and then backfilled with black resin mixed with a blue light solution, which is composed of fluorescent powder, organic light absorber, ultraviolet absorber, resin and organic filler, and then formed into an anti-peeping blue light layer after UV curing.

6. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 5, characterized in that: The distance between the bottom of the groove of the anti-peeping texture in the anti-peeping blue light structure layer (4) and the bottom wall of the connecting layer is 5 μm, the spacing between adjacent long strip grooves is 35-45 μm, and the depth of the long strip grooves is 75 μm.

7. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 5, characterized in that: The mass percentage content of each component in the anti-peeping blue light structural layer (4) is: 10-15% of fluorescent powder, 0-10% of organic light absorber, 0-10% of ultraviolet absorber, 15-20% of inorganic filler, and the balance is black resin.

8. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 2, characterized in that: The antistatic coating (5) is formed by compounding cations and nonions.

9. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 8, characterized in that: The coating is applied to the PET surface and then subjected to a thermal curing process to form an antistatic coating on the PET.

10. The multifunctional AB glue combined with a blue light blocking anti-peeping structure according to claim 2, characterized in that: The silica gel used in the impact-resistant porous structure silica gel layer (7) is mainly composed of methyl vinyl MQ resin, octamethylcyclotetrasiloxane, polysiloxane and fluorocarbon polymer, wherein the fluorocarbon polymer is used as an additive to achieve a water-washing effect.

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