UV tempered film with additional auxiliary frame

Abstract

The utility model relates to the technical field of tempered films, in particular to a UV tempered film with an additional auxiliary frame, which comprises a tempered film main body and the auxiliary frame corresponding to the edge of the tempered film main body, a UV adhesive layer is arranged on the lower surface of the tempered film main body, a solid adhesive layer is attached to the lower surface of the auxiliary frame, and a release film layer is attached to the solid adhesive layer. Wherein the edge of the tempered film main body is provided with a cambered surface surrounding edge, the inner side of the auxiliary frame is provided with a cambered surface surrounding groove corresponding to the cambered surface surrounding edge, and the auxiliary frame and the tempered film main body are in abutting fit through the butt joint of the cambered surface surrounding edge and the cambered surface surrounding groove; the auxiliary frame restricts the edge of the tempered film main body through the abutting of the cambered surface surrounding groove and the cambered surface surrounding edge, so that the stress generated by the edge of the tempered film main body can be transferred to the auxiliary frame under the conditions of falling, bumping and the like, and snowflake-shaped cracks or white edges are not easy to generate on the edge of the tempered film main body.

Description

Technical Field

[0001] The utility model relates to the technical field of tempered films, in particular to a UV tempered film with an additional auxiliary frame. Background Art

[0002] The UV tempered film is a full-glue tempered film using UV optical glue, which has the advantages of high adhesion, good hand feeling, anti-fingerprint and anti-stain, etc., and is widely used in the protection of mobile phone screens;

[0003] When attaching the UV tempered film, it is necessary to drop UV glue on the screen to be pasted, and then cover the tempered film. In this process, it is necessary to ensure that the UV optical glue covers between the tempered film and the screen to be pasted, and there are no bubbles generated; after the tempered film is covered, it is irradiated with a special UV lamp to bake the glue, so that the UV glue is cured, thus completing the operation of fixing the tempered film to the screen to be pasted;

[0004] However, when the UV tempered film is in use, snowflake-shaped patterns are likely to appear at its edges; the reason is that when the mobile phone falls, the impact force often concentrates on the edge part of the tempered film. Since the edge is a relatively weak area, highly concentrated stress is likely to be generated here, resulting in the separation between the film and the screen. And the UV tempered film cannot be pasted again after curing, so snowflake-shaped cracks or white edges will be formed; in view of this, it is necessary to propose an improved technical solution to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to provide a technical solution that can solve the above problems to overcome the above deficiencies.

[0006] A UV tempered film with an additional auxiliary frame includes a tempered film main body and an auxiliary frame corresponding to the edge of the tempered film main body. A UV glue layer is provided on the lower surface of the tempered film main body, a solid glue layer is attached to the lower surface of the auxiliary frame, and a release film layer is attached to the solid glue layer. Among them, an arc-shaped surrounding edge is provided at the edge of the tempered film main body, and an arc-shaped surrounding groove corresponding to the arc-shaped surrounding edge is provided inside the auxiliary frame. The auxiliary frame and the tempered film main body are tightly fitted through the docking of the arc-shaped surrounding edge and the arc-shaped surrounding groove.

[0007] Preferably, a stepped surrounding edge is provided at the edge of the tempered film main body. The stepped surrounding edge has an upper edge and a lower edge, and the arc-shaped surrounding edge is provided on the lower edge of the stepped surrounding edge.

[0008] Preferably, the height dimension from the upper end of the auxiliary frame to the arc-shaped surrounding groove corresponds to the height dimension of the upper edge of the stepped surrounding edge, so that the upper end of the auxiliary frame is flush with the upper end of the tempered film main body.

[0009] Preferably, an overflow glue chamfer for avoiding the overflow part of the UV glue layer is provided at the lower end of the auxiliary frame corresponding to the arc-shaped surrounding groove.

[0010] Preferably, the auxiliary frame is made of a metal material.

[0011] Preferably, the solid glue layer is made of AB glue material.

[0012] Preferably, an OCA glue layer is attached to the lower end of the tempered film body, an explosion-proof film layer is attached to the tempered film body through the OCA glue layer, and the UV glue layer is arranged at the lower end of the explosion-proof film layer.

[0013] Preferably, an anti-fingerprint coating is provided on the upper end of the tempered film body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By providing two independent entities, namely the tempered film body and the auxiliary frame, the auxiliary frame is attached to the screen to be pasted with a fixed glue layer after the tempered film body is attached. After being attached, the auxiliary frame restricts the edge of the tempered film body through the abutment of the arc-shaped surrounding groove and the arc-shaped surrounding edge, so that the stress generated at the edge of the tempered film body when there is a fall or collision can be transferred to the auxiliary frame, thereby making it difficult for the edge of the tempered film body to generate snowflake-like cracks or white edges. Using an arc-shaped structure for abutment can increase the contact area of the abutment and have an abutment force within the angular range of the arc, enabling the auxiliary frame to exert a lateral-to-normal restricting force on the tempered film body. In addition, it can also block the edge of the tempered film body to a certain extent. Even if there are slight white edges at the edge of the tempered film body, they can be blocked. Therefore, through the structure setting of the independent fitting and mutual restriction of the tempered film body and the auxiliary frame, the edges after attachment will not show white edges or snowflake-like cracks during long-term use, thus greatly improving the durability of the UV tempered film.

[0016] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic diagram of the explosion structure of the present utility model;

[0020] Figure 3 is a schematic diagram of a partial cross-sectional structure in the combined state of the present utility model;

[0021] Figure 4 is a schematic diagram of a partial cross-sectional structure in the separated state of the present utility model.

[0022] The reference numerals and names in the figure are as follows:

[0023] Tempered film main body 10, UV glue layer 11, stepped surrounding edge 12, OCA glue layer 13, explosion-proof film layer 14, fingerprint-proof coating 15, auxiliary frame 20, solid glue layer 21, release film layer 22, glue overflow relief chamfer 23, arc-shaped surrounding edge 31, arc-shaped surrounding groove 32. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , in the embodiment of the present utility model, a UV tempered film with an additional auxiliary frame includes a tempered film main body 10 and an auxiliary frame 20 corresponding to the edge of the tempered film main body 10. A UV glue layer 11 is provided on the lower surface of the tempered film main body 10, a solid glue layer 21 is attached to the lower surface of the auxiliary frame 20, and a release film layer 22 is adhered to the solid glue layer 21. Among them, an arc-shaped surrounding edge 31 is provided at the edge of the tempered film main body 10, and an arc-shaped surrounding groove 32 corresponding to the arc-shaped surrounding edge 31 is provided inside the auxiliary frame 20. The auxiliary frame 20 and the tempered film main body 10 are tightly fitted through the docking of the arc-shaped surrounding edge 31 and the arc-shaped surrounding groove 32.

[0026] In the above technical solution, by providing two independent components, namely the tempered film body 10 and the auxiliary frame 20, the tempered film body 10 is attached to the screen to be pasted through the UV glue layer 11. The UV glue layer 11 in the above technical solution is set during use, that is, by dropping UV glue on the screen to be pasted and then placing the tempered film body 10, so that the UV glue fills the space between the tempered film body 10 and the screen to be pasted, and then curing the glue by irradiating with a UV lamp. After the UV glue is cured, the UV glue layer 11 is formed, thereby fixing the tempered film body 10 on the screen to be pasted. The auxiliary frame 20 is separated independently, and the auxiliary frame 20 is attached to the screen to be pasted after the tempered film body 10 is attached. The auxiliary frame 20 is attached to the screen to be pasted by means of a fixed glue layer. After being attached, the auxiliary frame 20 restricts the edge of the tempered film body 10 by the abutment of the arc-shaped surrounding groove 32 and the arc-shaped surrounding edge 31, so that the stress generated at the edge of the tempered film body 10 when it is dropped or knocked can be transferred to the auxiliary frame 20. In order to achieve a better restricting effect, the auxiliary frame 20 is preferably made of a metal material, so that snowflake-shaped cracks or white edges are not easily generated at the edge of the tempered film body 10. An arc-shaped structure is used for abutment, which can increase the contact area of the abutment and has an abutting force within the angular range of the arc surface, so that the auxiliary frame 20 can exert a restricting force on the tempered film body 10 from the lateral direction to the normal direction. In addition, it can also block the edge of the tempered film body 10 to a certain extent. Even if there are slight white edges at the edge of the tempered film body 10, they can be blocked. Therefore, by using a structure in which the tempered film body 10 and the auxiliary frame 20 are independently attached and mutually restricted, the edges after attachment will not show white edges or snowflake-shaped cracks during long-term use, thus greatly improving the durability of the UV tempered film.

[0027] Please refer to Figures 2-4 , in the embodiment of the present invention, it is further proposed that a stepped surrounding edge 12 is provided at the edge of the tempered film body 10. The stepped surrounding edge 12 has an upper edge and a lower edge, and the arc-shaped surrounding edge 31 is arranged on the lower edge of the stepped surrounding edge 12; the height dimension from the upper end of the auxiliary frame 20 to the arc-shaped surrounding groove 32 corresponds to the height dimension of the upper edge of the stepped surrounding edge 12, so that the upper end of the auxiliary frame 20 is flush with the upper end of the tempered film body 10; through this setting, a closer fit can be achieved between the tempered film and the auxiliary frame 20, and the gap generated when the upper ends of the tempered film body 10 and the auxiliary frame 20 are flush is a right-angled gap, which will not cause cuts to the user's fingers during use.

[0028] Please refer to Figures 3-4, in the embodiment of the present utility model, it is further proposed that an overflow glue chamfer 23 for avoiding the overflow part of the UV glue layer 11 is provided at the lower end of the auxiliary frame 20 corresponding to the arc surface surrounding groove 32, so that the overflow part during the setting of the UV glue layer 11 will not abut against the auxiliary frame 20, ensuring the tightness of the cooperation between the auxiliary frame 20 and the tempered film main body 10.

[0029] Please refer to Figure 2 , in the embodiment of the present utility model, it is further proposed that the solid glue layer 21 is made of AB glue material, which can have strong adhesiveness, and AB glue has certain fluidity and adhesiveness. During the film pasting process, it can automatically fill in tiny unevenness, achieving a seamless fitting effect, reducing the gap between the film and the screen. AB glue also has good weather resistance and aging resistance, and can still maintain good adhesiveness after long-term use, without problems such as degumming and edge warping due to the passage of time. An OCA glue layer 13 is attached to the lower end of the tempered film main body 10, and an explosion-proof film layer 14 is attached to the tempered film main body 10 through the OCA glue layer 13. The UV glue layer 11 is arranged at the lower end of the explosion-proof film layer 14; OCA glue has excellent adhesion, can firmly bond the tempered film and the explosion-proof film together, and is not prone to delamination and degumming during daily use. OCA glue can achieve uniform coating and bonding, making the fitting degree between the two layers of film higher, and there is no problem of local weak bonding. This uniform bonding helps to improve the strength and stability of the entire film pasting structure, providing consistent protection performance in all directions and parts. OCA glue has high transparency and hardly scatters and absorbs light. Therefore, when it is used to bond the tempered film and the explosion-proof film, it will not affect the display effect of the screen. When a user uses a mobile phone with this combined film pasted, a clear and vivid visual experience can be obtained, and the color, brightness, and contrast can all be well restored. When the mobile phone is impacted by an external force, first, the outer tempered film main body 10 bears part of the impact force, and then the inner explosion-proof film further absorbs and disperses the remaining impact force. This dual protection mechanism greatly improves the impact resistance of the mobile phone screen in case of accidental dropping, collision, etc., reducing the risk of screen breakage. The explosion-proof film has certain elasticity and ductility and is generally made of PET. When the impact force is transmitted to the explosion-proof film, it can disperse the stress over a larger area, reducing local stress and preventing the screen from breaking due to excessive single-point stress. Even if the screen to be pasted or the UV tempered film breaks under a strong impact force, the explosion-proof film can firmly adhere the generated glass fragments together, preventing the glass fragments from splashing and injuring people or causing secondary damage to the internal components of the screen.

[0030] Please refer to Figure 2, in the embodiment of the present utility model, it is further proposed that an anti-fingerprint coating 15 is provided at the upper end of the tempered film body 10. When a user uses a touch screen, fingerprints will inevitably be left on the screen due to frequent finger contact with the screen. The anti-fingerprint coating 15 can effectively reduce the degree of fingerprint adhesion on the screen, keep the screen relatively clean during use, reduce the interference of fingerprint marks on the visual effect, and enable the user to clearly see the screen content.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A UV tempered film with an additional auxiliary frame, characterized in that: The invention comprises a tempered film body (10) and an auxiliary frame (20) corresponding to the edge of the tempered film body (10); a UV adhesive layer (11) is arranged on the lower surface of the tempered film body (10); a solid adhesive layer (21) is attached to the lower surface of the auxiliary frame (20); and a release film layer (22) is attached to the solid adhesive layer (21); a curved surrounding edge (31) is arranged on the edge of the tempered film body (10); a curved surrounding groove (32) corresponding to the curved surrounding edge (31) is arranged on the inner side of the auxiliary frame (20); the auxiliary frame (20) and the tempered film body (10) are tightly matched by docking the curved surrounding edge (31) and the curved surrounding groove (32).

2. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: The edge of the tempered film body (10) is provided with a step surrounding edge (12), the step surrounding edge (12) has an upper edge and a lower edge, and the arc surface surrounding edge (31) is provided on the lower edge of the step surrounding edge (12).

3. The UV tempered film with an additional auxiliary frame according to claim 2, characterized in that: The height dimension from the upper end of the auxiliary frame (20) to the arc-surrounding groove (32) corresponds to the height dimension of the upper edge of the step surrounding edge (12), so that the upper end of the auxiliary frame (20) is flush with the upper end of the tempered film body (10).

4. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: The lower end of the auxiliary frame (20) corresponding to the arc-surrounding groove (32) is provided with an overflow glue-making chamfer (23) for avoiding overflow of the UV glue layer (11).

5. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: The auxiliary frame (20) is made of metal material.

6. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: The solid adhesive layer (21) is made of AB adhesive material.

7. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: An OCA adhesive layer (13) is attached to the lower end of the tempered film body (10), an explosion-proof film layer (14) is attached to the tempered film body (10) through the OCA adhesive layer (13), and a UV adhesive layer (11) is arranged at the lower end of the explosion-proof film layer (14).

8. The UV tempered film with an additional auxiliary frame according to claim 1, characterized in that: An anti-fingerprint coating (15) is provided at the upper end of the tempered film body (10).

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