Glue conveying structure for AB glue in curved-surface tempered film

Abstract

The utility model discloses a glue spreading structure for AB glue in a curved-surface tempered film, which relates to the technical field of curved-surface tempered films and comprises a curved-surface tempered film, an AB glue layer and a PC (polycarbonate) back plate, the four edges of the curved surface tempered film are bent towards the release surface of the curved surface tempered film to form a curved surface, the curved surface tempered film covers and presses the PC back plate, the PC back plate is convexly provided with a convex step towards the direction of the curved surface tempered film, the convex surface of the convex step is attached to the release surface of the curved surface tempered film, and the convex surface of the convex step is attached to the release surface of the curved surface tempered film. The side faces of the periphery of the convex step are all attached to the curved surface of the periphery of the curved surface tempered film. The AB adhesive layer comprises a silica gel film, a base material, an OCA optical adhesive and a release film which are laminated, the silica gel film is attached to the release surface of the curved-surface tempered glass film, AB adhesive can be uniformly distributed on the curved-surface tempered glass film, and the formation of height difference and generation of gaps are avoided, so that the curved-surface tempered glass film can be completely attached to a mobile phone screen, and the service life of the mobile phone screen is prolonged. The problem of unbalanced glue spreading of the AB glue layer on the release surface of the curved-surface tempered film is solved, and the curved-surface tempered film is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of curved tempered films, in particular to a glue-moving structure of AB glue in a curved tempered film. Background Art

[0002] As mobile phone consumers have higher aesthetic requirements for mobile phone appearance and reduce the risk of mobile phone damage, consumers will stick tempered glass protective films on their mobile phone screens, especially brand mobile phones with high prices on the market that can reflect consumers' economic income. Curved tempered film is a very cost-effective tempered glass protective film. For mobile phones with curved screens, it can not only protect the mobile phone screen but also the edges of the mobile phone.

[0003] However, although the curved tempered glass has a high cost-effectiveness, bubbles are easily generated during the film application process, which affects the overall appearance of the phone and makes the film application effect counterproductive. The main reason for the formation of bubbles is not only the user's lack of skill in film application, but also the imbalance of the AB glue on the curved tempered glass is also a very important influencing factor.

[0004] Since the AB glue of the curved tempered film has a certain fluidity, and the AB glue on the existing tempered film only relies on a release film to isolate air and dust. The release film is thin and soft, and its flatness is easy to change, which makes the AB glue on the curved tempered film have the problem of unbalanced glue flow. In this way, the AB glue will be unevenly distributed on the curved tempered film, forming a height difference and a gap, resulting in the curved tempered film and the mobile phone screen cannot be completely fitted, and the air in the gap cannot be completely discharged to form bubbles. For this reason, we propose a glue flow structure for the AB glue in the curved tempered film. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a glue running structure for AB glue in a curved tempered film, which can make the AB glue evenly distributed on the curved tempered film, avoid the formation of height differences and gaps, so that the curved tempered film and the mobile phone screen can be fully fitted, and solve the problem of unbalanced glue running of the OCA optical glue in the AB glue layer on the release surface of the curved tempered film. It is easy to use and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a glue-moving structure of AB glue in a curved tempered film comprises a curved tempered film, an AB glue layer and a PC back panel;

[0007] The four sides of the curved tempered film are bent toward the release surface to form a curved surface, the curved tempered film is covered and pressed on the PC back plate, the PC back plate is provided with a convex step toward the curved tempered film, the convex surface of the convex step is in contact with the release surface of the curved tempered film, and the side surfaces around the convex step are in contact with the curved surfaces around the curved tempered film;

[0008] The AB adhesive layer includes a silicone film, a substrate, an OCA optical adhesive and a release film which are stacked in this way. The silicone film is attached to the release surface of the curved tempered film, and the release film is clamped on the convex surface of the convex step of the PC back plate.

[0009] The four sides of the curved tempered film are bent toward its release surface to form a curved surface, so that the curved tempered film can fully fit the curved screen of the mobile phone. The curved tempered film cover is pressed on the PC back panel, so that the AB adhesive layer can be stably clamped between the release surface of the curved tempered film and the PC back panel. The convex step fits the release surface of the curved tempered film so that the curved tempered film can maintain a good fit and avoid the curved tempered film from being compressed and damaged. When the curved tempered film is in use, the curved tempered film can be removed from the PC back panel through the pull tab and the force groove, and then after tearing off the release film, the curved surface of the curved tempered film is aligned with the curved surface of the mobile phone screen, and then the curved tempered film is completely covered on the mobile phone screen.

[0010] Furthermore, a pull tab is fixedly attached to the rear side of the PC back plate, and a stress-bearing groove is provided on the side of the PC back plate away from the AB adhesive layer.

[0011] The curved tempered film is removed from the PC back panel by using the pull tab. The force groove is set to cooperate with the pull tab to peel off the PC back panel, making the curved tempered film easier to remove.

[0012] Furthermore, the AB adhesive layer is sandwiched between the release surface of the curved tempered film and the PC back panel, and the OCA optical adhesive is evenly distributed on the bonding surface of the AB adhesive layer.

[0013] The AB adhesive layer is sandwiched between the release surface of the curved tempered film and the PC back panel. Since the PC back panel has good flatness, the OCA optical adhesive is evenly pressurized, and the OCA optical adhesive can be evenly distributed on the bonding surface of the AB adhesive layer. The height difference caused by the flow of the OCA optical adhesive in the AB adhesive layer can be avoided, thereby solving the problem of unbalanced adhesive flow of the OCA optical adhesive in the AB adhesive layer on the release surface of the curved tempered film.

[0014] Furthermore, the convex step is surrounded by grooves adapted to the edges of the four curved surfaces of the curved tempered film, and the side curved edges of the curved tempered film are sunken into the grooves.

[0015] The convex step is surrounded by grooves that match the edges of the four curved surfaces of the curved tempered film, which can limit the sliding of the curved tempered film on the convex step and further avoid unbalanced glue movement of the AB glue layer.

[0016] Furthermore, the AB adhesive layer also includes a textured film, and the textured film is arranged between the silicone film and the release surface of the curved tempered film.

[0017] The setting of the textured film can evenly disperse the bubbles pressed on the curved tempered film, thereby avoiding the unbalanced glue flow of the AB adhesive layer and the generation of gaps during the film application process. Therefore, the AB adhesive layer can also maintain good flatness during film application, making the curved tempered film easier to adhere to the surface of the mobile phone screen and convenient to use.

[0018] Furthermore, a receiver hole is provided on the upper portion of the curved tempered film, a camera hole is provided directly above the receiver hole, and a clearance hole cooperating with the receiver hole and a clearance groove cooperating with the camera hole are provided on the upper portion of the AB adhesive layer.

[0019] It can prevent the phone's earpiece and camera functions from being affected by the curved tempered film.

[0020] Compared with the prior art, the beneficial effects of the utility model are: the glue-moving structure of AB glue in the curved tempered film has the following advantages:

[0021] 1. The AB adhesive layer is sandwiched between the release surface of the curved tempered film and the PC back panel. Since the PC back panel has good flatness, the OCA optical adhesive is evenly pressed, and the OCA optical adhesive can be evenly distributed on the bonding surface of the AB adhesive layer, which can avoid the height difference caused by the flow of the OCA optical adhesive in the AB adhesive layer, thereby solving the problem of unbalanced adhesive flow of the OCA optical adhesive in the AB adhesive layer on the release surface of the curved tempered film.

[0022] 2. Grooves matching the edges of the four curved surfaces of the curved tempered film are provided around the convex step, which can limit the sliding of the curved tempered film on the convex step and further avoid unbalanced glue movement of the AB glue layer.

[0023] 3. By setting the textured film, the bubbles pressed on the curved tempered film can be evenly dispersed, thereby avoiding the imbalance of the AB adhesive layer and the generation of gaps during the film application process. Therefore, the AB adhesive layer can also maintain good flatness during film application, making the curved tempered film easier to adhere to the surface of the mobile phone screen and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the explosion structure of the utility model.

[0025] Figure 2 It is a schematic diagram of the rear side of the structural curved tempered film of the utility model.

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the AB adhesive layer of the utility model structure.

[0027] Figure 4 It is a schematic diagram of the longitudinal section structure of the utility model.

[0028] In the figure: 1 curved tempered film, 101 earpiece hole, 102 camera hole, 2AB adhesive layer, 201 clearance hole, 202 clearance groove, 203 textured film, 204 silicone film, 205 substrate, 206 OCA optical adhesive, 207 release film, 3PC back panel, 301 convex step, 302 pull tab, 303 force groove, 304 groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4 , This embodiment provides a technical solution: a glue-passing structure of AB glue in a curved tempered film includes a curved tempered film 1, an AB glue layer 2 and a PC back panel 3;

[0031] The four sides of the curved tempered film 1 are bent toward the release surface to form a curved surface. The curved tempered film 1 is pressed on the PC back plate 3. The PC back plate 3 is provided with a convex step 301 toward the curved tempered film 1. The convex surface of the convex step 301 is in contact with the release surface of the curved tempered film 1. The side surfaces around the convex step 301 are in contact with the curved surfaces around the curved tempered film 1.

[0032] The AB adhesive layer 2 includes a silicone film 204 , a substrate 205 , an OCA optical adhesive 206 and a release film 207 which are stacked in this way. The silicone film 204 is attached to the release surface of the curved tempered film 1 , and the release film 207 is clamped on the convex surface of the convex step 301 of the PC back plate 3 .

[0033] The four sides of the curved tempered film 1 are bent toward its release surface to form a curved surface, so that the curved tempered film 1 can be completely fitted with the curved screen of the mobile phone. The curved tempered film 1 is covered and pressed on the PC back plate 3, so that the AB adhesive layer 2 can be stably clamped between the release surface of the curved tempered film 1 and the PC back plate 3. The convex step 301 fits with the release surface of the curved tempered film 1, so that the curved tempered film 1 can maintain a good fit and can avoid the curved tempered film 1 from being compressed and damaged. When the curved tempered film 1 is in use, the curved tempered film 1 can be removed from the PC back plate 3 through the pull tab 302 and the stress groove 303, and then after tearing off the release film 207, the curved surface of the curved tempered film 1 is aligned with the curved surface of the curved screen of the mobile phone, and then the curved tempered film 1 is completely covered on the mobile phone screen.

[0034] A pull tab 302 is fixedly attached to the rear side of the PC back plate 3 , and a stress-bearing groove 303 is provided on a side of the PC back plate 3 away from the AB adhesive layer 2 .

[0035] The curved tempered film 1 is taken out from the PC back plate 3 by the pull tab 302 , and the force groove 303 is provided to cooperate with the pull tab 302 to peel off the PC back plate 3 , so that the curved tempered film 1 is easier to be taken out.

[0036] The AB adhesive layer 2 is sandwiched between the release surface of the curved tempered film 1 and the PC back plate 3 , and the OCA optical adhesive 206 is evenly distributed on the bonding surface of the AB adhesive layer 2 .

[0037] The AB adhesive layer 2 is clamped between the release surface of the curved tempered film 1 and the PC back panel 3. Since the PC back panel 3 has good flatness, the OCA optical adhesive 206 is evenly pressurized, and the OCA optical adhesive 206 can be evenly distributed on the bonding surface of the AB adhesive layer 2. The height difference caused by the flow of the OCA optical adhesive 206 in the AB adhesive layer 2 can be avoided, thereby solving the problem of unbalanced flow of the OCA optical adhesive 206 in the AB adhesive layer 2 on the release surface of the curved tempered film 1.

[0038] The convex step 301 is surrounded by grooves 304 that match the edges of the four curved surfaces of the curved tempered film 1 , and the side curved edges of the curved tempered film 1 are sunken in the grooves 304 .

[0039] The convex step 301 is surrounded by grooves 304 that match the edges of the four curved surfaces of the curved tempered film 1 , which can limit the curved tempered film 1 from sliding on the convex step 301 and further avoid unbalanced glue movement of the AB glue layer 2 .

[0040] The AB adhesive layer 2 further includes a textured film 203 , and the textured film 203 is disposed between the silicone film 204 and the release surface of the curved tempered film 1 .

[0041] The setting of the textured film 203 can evenly disperse the bubbles pressed on the curved tempered film 1, thereby avoiding the AB adhesive layer 2 from being unbalanced and causing gaps during the film pasting process. Therefore, the AB adhesive layer 2 can also maintain good flatness during film pasting, making the curved tempered film 1 easier to adhere to the surface of the mobile phone screen and convenient to use.

[0042] The curved tempered film 1 has an earpiece hole 101 on the top, a camera hole 102 just above the earpiece hole 101 , and the AB adhesive layer 2 has a clearance hole 201 cooperating with the earpiece hole 101 and a clearance groove 202 cooperating with the camera hole 102 on the top.

[0043] The receiver and camera functions of the mobile phone can be prevented from being affected by the curved tempered film 1.

[0044] The working principle of the glue-moving structure of AB glue in a curved tempered film provided by the utility model is as follows: the four sides of the curved tempered film 1 are bent toward its release surface to form a curved surface, so that the curved tempered film 1 can be completely fitted with the curved screen of the mobile phone, and the curved tempered film 1 is pressed on the PC back plate 3, so that the AB glue layer 2 can be stably clamped between the release surface of the curved tempered film 1 and the PC back plate 3, and the convex step 301 is fitted with the release surface of the curved tempered film 1, so that the curved tempered film 1 can maintain a good fit and can avoid the curved tempered film 1 from being damaged by pressure, and the curved tempered When the film 1 is in use, the curved tempered film 1 can be taken out from the PC back plate 3 by the pull tab 302 and the stress groove 303, and then after tearing off the release film 207, the curved surface of the curved tempered film 1 is aligned with the curved surface of the mobile phone curved screen, and then the curved tempered film 1 is completely covered on the mobile phone screen. The curved tempered film 1 is taken out from the PC back plate 3 by the pull tab 302, and the stress groove 303 is set to cooperate with the pull tab 302 to peel off the PC back plate 3, so that the curved tempered film 1 is easier to take out, and the AB adhesive layer 2 is clamped between the release surface of the curved tempered film 1 and the PC back plate 3. Since the PC back plate 3 has good flatness, the OCA optical glue 206 is evenly pressed, and the OCA optical glue 206 can be evenly distributed on the bonding surface of the AB adhesive layer 2, which can avoid the height difference caused by the flow of the OCA optical glue 206 in the AB adhesive layer 2, thereby solving the problem of unbalanced glue flow of the OCA optical glue 206 in the AB adhesive layer 2 on the release surface of the curved tempered film 1. The convex step 301 is surrounded by grooves 304 that are adapted to the edges of the four sides of the curved tempered film 1, which can limit the curved tempered film 1 from sliding on the convex step 301. , further avoiding unbalanced glue movement of the AB glue layer 2, the setting of the textured film 203 can evenly disperse the bubbles pressed on the curved tempered film 1, thereby avoiding unbalanced glue movement of the AB glue layer 2 and generating gaps during the film application process. Therefore, the AB glue layer 2 can also maintain good flatness during film application, making the curved tempered film 1 easier to adhere to the surface of the mobile phone screen and convenient to use. Through the setting of the earpiece hole 101, the camera hole 102, the clearance hole 201 and the clearance groove 202, the earpiece and camera functions of the mobile phone can be prevented from being affected by the curved tempered film 1.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A glue-flowing structure of AB glue in a curved tempered film, characterized by: It comprises a curved tempered film (1), an AB adhesive layer (2) and a PC back panel (3); The four sides of the curved tempered film (1) are bent toward the release surface thereof to form a curved surface. The curved tempered film (1) is pressed onto the PC back plate (3). The PC back plate (3) is provided with a convex step (301) convexly toward the curved tempered film (1). The convex surface of the convex step (301) is in contact with the release surface of the curved tempered film (1). The side surfaces around the convex step (301) are in contact with the curved surfaces around the curved tempered film (1). The AB adhesive layer (2) comprises a silicone film (204), a substrate (205), an OCA optical adhesive (206) and a release film (207) arranged in a stacked manner, the silicone film (204) is attached to the release surface of the curved tempered film (1), and the release film (207) is clamped on the convex surface of the convex step (301) of the PC back plate (3).

2. The AB glue structure in the curved tempered film according to claim 1, characterized in that: A pull tab (302) is fixedly attached to the rear side of the PC back plate (3), and a stress-bearing groove (303) is provided on the side of the PC back plate (3) away from the AB adhesive layer (2).

3. The AB glue glue-moving structure in the curved tempered film according to claim 1, characterized in that: The AB adhesive layer (2) is clamped between the release surface of the curved tempered film (1) and the PC back panel (3), and the OCA optical adhesive (206) is evenly distributed on the bonding surface of the AB adhesive layer (2).

4. The AB glue glue-moving structure in a curved tempered film according to claim 1, characterized in that: The convex step (301) is provided with grooves (304) adapted to the edges of the four curved surfaces of the curved tempered film (1), and the side curved edges of the curved tempered film (1) are sunken in the grooves (304).

5. The AB glue flow structure in a curved tempered film according to claim 1, characterized in that: The AB adhesive layer (2) further comprises a textured film (203), and the textured film (203) is arranged between the silicone film (204) and the release surface of the curved tempered film (1).

6. The AB glue glue-passing structure in a curved tempered film according to claim 1, characterized in that: The curved tempered film (1) is provided with an earphone hole (101) on the upper part, and a camera hole (102) is provided just above the earphone hole (101); the AB adhesive layer (2) is provided with a clearance hole (201) matched with the earphone hole (101) and a clearance groove (202) matched with the camera hole (102) on the upper part.

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