CN209854042U

CN209854042U - AB glue of mobile phone curved surface screen protection film

Info

Publication number: CN209854042U
Application number: CN201920629475.5U
Authority: CN
Inventors: 徐贵全
Original assignee: Shenzhen Ruifeida Photoelectric Technology Co Ltd
Current assignee: Shenzhen Ruifeida Photoelectric Technology Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2019-12-27
Anticipated expiration: 2029-05-05

Abstract

The utility model relates to the field of mobile phone curved surface screen protection films, in particular to an AB glue of a mobile phone curved surface screen protection film, which comprises an A surface layer, a substrate layer and a B surface layer; the AB glue structure of the mobile phone curved surface screen protection film is reasonable in design and strong in practicability, and a concave shaft extrusion OCA coating layer and a convex shaft extrusion OCA coating layer are formed through the co-extrusion action of a convex shaft and a concave shaft, so that the AB glue structure of the whole mobile phone curved surface screen protection film is thin in the middle and thick on two sides; the design of thin middle can shorten the distance between the finger and the screen, so as to achieve the purpose of fingerprint identification; the design that both sides are thick enables AB glue laminating behind the toughened glass membrane, makes to have sufficient AB glue layer between toughened glass membrane and the curved surface screen to make the glass membrane can with the complete laminating of cell-phone screen.

Description

AB glue of mobile phone curved surface screen protection film

Technical Field

The utility model relates to a cell-phone curved surface screen protection film field specifically is an AB glue of cell-phone curved surface screen protection film.

Background

Along with the fact that the under-screen fingerprint identification mobile phone is gradually applied to the comprehensive screen mobile phone, the ultrasonic fingerprint identification technology of the smart mobile phone is safe and reliable, and can work normally under strong light and humid environments. People generally stick a protective film on the screen of the mobile phone in the process of using the mobile phone to prevent the screen from being scratched. The ultrasonic fingerprint technology has a very high requirement on the distance between a finger and a mobile phone screen, and if the thickness of the protective film exceeds a maximum identification threshold, the mobile phone cannot be unlocked. Due to the limitation of the curved screen technology, the protective film has to have a certain thickness so as to tightly attach the edges of the mobile phone film and the curved surface of the mobile phone screen.

To the problem in the above-mentioned background art, the utility model aims at providing a AB glue of cell-phone curved surface screen protection film.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a AB glue of cell-phone curved surface screen protection film to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a AB glue of cell-phone curved surface screen protection film, it includes: the base material layer is a base layer of AB glue of the mobile phone curved screen protection film; the surface layer A is coated at the lower end of the base material layer; the B surface course coating is in the substrate layer upper end, and the surface of B surface course forms concave axle extrusion OCA coating layer and convex axle extrusion OCA coating layer through the convex axle that sets up on the last roller and the common extrusion effect of concave axle.

As a further aspect of the present invention: the thickness of substrate layer is 50 ~ 500 um.

As a further aspect of the present invention: the thickness of A surface course is 60 ~ 600um, and the adhesion of A surface course is 50 ~ 400 g.

As a further aspect of the present invention: the thickness of B surface course is 70 ~ 700um, and the adhesion on B surface course is 500 ~ 3500 g.

As a further aspect of the present invention: the coating thickness of the concave shaft extrusion OCA coating layer is 100-500 um, and the coating thickness of the convex shaft extrusion OCA coating layer is 50-400 um; the B surface layers are alternately thick and thin and are arranged in a zigzag manner.

Compared with the prior art, the beneficial effects of the utility model are that:

the AB glue structure of the mobile phone curved surface screen protection film is reasonable in design and strong in practicability, and a concave shaft extrusion OCA coating layer and a convex shaft extrusion OCA coating layer are formed through the co-extrusion action of a convex shaft and a concave shaft, so that the AB glue structure of the whole mobile phone curved surface screen protection film is thin in the middle and thick on two sides; the design of thin middle can shorten the distance between the finger and the screen, so as to achieve the purpose of fingerprint identification; the design that both sides are thick enables AB glue laminating behind the toughened glass membrane, makes to have sufficient AB glue layer between toughened glass membrane and the curved surface screen to make the glass membrane can completely laminate with the cell-phone screen, be worth promoting and using in cell-phone curved surface screen protection film field.

Drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is the structural schematic diagram of the AB glue of the mobile phone curved screen protective film according to the embodiment of the present invention.

Fig. 2 is the utility model discloses a principle sketch map one of the B face OCA glue coating of AB glue of cell-phone curved surface screen protection film.

Fig. 3 is a schematic diagram of a principle of coating the B-side OCA glue on the AB glue of the mobile phone curved screen protective film according to the embodiment of the present invention.

Fig. 4 is an installation schematic diagram of the AB glue and the glass screen of the mobile phone curved surface screen protection film of the embodiment of the present invention.

In the figure: 1-A surface layer, 2-base material layer, 3-B surface layer, 4-concave shaft extrusion OCA coating layer, 5-convex shaft extrusion OCA coating layer, 6-lower roller, 7-upper roller, 8-convex shaft, 9-concave shaft and 10-toughened glass film.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1, in embodiment 1 of the present invention, an AB glue for a curved surface screen protection film of a mobile phone includes: the protective film comprises a surface layer 1A, a base material layer 2 and a surface layer 3B, wherein the base material layer 2 is a base layer of AB glue of the mobile phone curved screen protective film, and the base material layer 2 is made of a PET base material; the surface layer A1 is coated at the lower end of the base material layer 2, and the surface layer A1 is made of silica gel; the coating of B surface course 3 is in 2 upper ends of substrate layer, and the material of B surface course 3 is OCA glue, and the 3 surfaces of B surface course form concave axle extrusion OCA coating layer 4 and convex axle extrusion OCA coating layer 5 through the protruding axle 8 and the 9 coextrusion of concave axle that set up on last roller 7.

Further, the thickness of substrate layer 2 is 50 ~ 500 um.

Further, the thickness of the surface layer A1 is 60-600 um, and the adhesive force of the surface layer A1 is 50-400 g;

specifically, the coating method of the surface a layer 1 is one of dimple coating, comma coating and extrusion coating, and preferably, the dimple coating method of the surface a layer 1 is the most preferable.

Further, the thickness of the B surface layer 3 is 70-700 um, and the adhesive force of the B surface layer 3 is 500-3500 g.

Example 2

Referring to fig. 2, in embodiment 2 of the present invention, further, the coating thickness of the concave-axis-extrusion OCA coating layer 4 is 100 to 500um, and the coating thickness of the convex-axis-extrusion OCA coating layer 5 is 50 to 400 um; the thickness of the B surface layer 3 is alternated and is arranged in a zigzag manner.

The utility model discloses a theory of operation is:

when the AB glue of the curved surface screen protective film of the mobile phone is manufactured, the method mainly comprises the following steps:

firstly, selecting a substrate layer 2 as an AB glue substrate of the mobile phone curved screen protection film;

secondly, coating the surface layer A1 at the lower end of the base material layer 2 in a slightly concave coating mode;

thirdly, coating the surface layer B3 on the upper end of the base material layer 2 after the surface layer A1 is coated, wherein the coating process is as follows: coating an OCA glue layer on a surface layer (3) B, then extruding the surface layer (3) coated with the OCA glue layer by adopting a double roller, wherein the double roller comprises a lower roller (6) and an upper roller (7), a convex shaft (8) is arranged on the upper roller (7), a concave shaft (9) is arranged between two adjacent convex shafts (8) on the upper roller (7), the number of the convex shafts (8) is set according to the screen width of a mobile phone model and the width of a coating machine, the width of the convex shafts (8) and the width of the concave shafts (9) are set according to the unlocking area of the mobile phone screen and the width of the mobile phone screen, the thickness of the convex shafts (8) is set according to the threshold value of ultrasonic unlocking identification of the mobile phone screen, and the;

cutting the AB glue of the prepared mobile phone curved screen protective film into a specific size, and then attaching the AB glue to the tempered glass film 10 after being subjected to hot bending to form the mobile phone curved screen tempered glass film applied to ultrasonic fingerprint unlocking.

In the description of the invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a AB glue of cell-phone curved surface screen protection film, it includes: a surface course (1), substrate layer (2) and B surface course (3), its characterized in that: the substrate layer (2) is a base layer of AB glue of the mobile phone curved screen protection film; the surface layer A (1) is coated at the lower end of the base material layer (2); b surface course (3) coating is in substrate layer (2) upper end, and B surface course (3) surface forms concave axle extrusion OCA coating layer (4) and convex axle extrusion OCA coating layer (5) through protruding axle (8) and the common extrusion effect of concave axle (9) that set up on last roller (7).

2. The AB glue of the mobile phone curved screen protective film according to claim 1, characterized in that: the thickness of substrate layer (2) is 50 ~ 500 um.

3. The AB glue of the mobile phone curved screen protective film according to claim 1, characterized in that: the thickness of A surface course (1) is 60 ~ 600um, and the adhesion of A surface course (1) is 50 ~ 400 g.

4. The AB glue of the mobile phone curved screen protective film according to claim 1, characterized in that: the thickness of B surface course (3) is 70 ~ 700um, and the adhesion of B surface course (3) is 500 ~ 3500 g.

5. The AB glue of the mobile phone curved screen protective film according to claim 1, characterized in that: the coating thickness of the concave shaft extrusion OCA coating layer (4) is 100-500 um, and the coating thickness of the convex shaft extrusion OCA coating layer (5) is 50-400 um; the surface layer B (3) is alternately thick and thin and is arranged in a zigzag manner.