Protective film for electronic product

Abstract

A protective film for an electronic product comprises a protective film body, the protective film body comprises a transparent protective film and an adhesive layer which are stacked from top to bottom, the transparent protective film comprises a first film part and a second film part, and the second film part is arranged corresponding to a fingerprint unlocking part on a screen of the electronic product; the adhesive layer comprises a first bonding part and a second bonding part, the first bonding part is arranged corresponding to the first membrane part, and the first bonding part and the first membrane part are bonded and fixed; the second bonding part is arranged corresponding to the second membrane part, and the second bonding part and the second membrane part are bonded and fixed; the first diaphragm part and the second diaphragm part are of a split structure; and / or the first bonding part and the second bonding part are of a split structure. The protective film for the electronic product has a good protection function and a fingerprint unlocking function.

Description

Technical Field

[0001] The utility model relates to the technical field of protective film structures, in particular to a protective film for electronic products. Background Art

[0002] Electronic products with screens such as mobile phones and computers currently available on the market generally require a layer of protective film to be attached to the screen surface to protect the screen. However, for electronic products (especially mobile phones) with fingerprint unlocking functions on the screen, it is difficult for the protective film to have both good protection functions and fingerprint unlocking functions (i.e., the sensitivity of fingerprint unlocking). The reason is that the protective film generally includes a transparent protective film and an adhesive layer stacked up and down, and the adhesive layer is used to adhere the transparent protective film to the screen of the electronic product. Since the transparent protective film and the adhesive layer of the existing protective film are both integral film layer structures, the thickness and material of the transparent protective film at each position are the same, and the thickness and material of the adhesive layer at each position are the same; when the protective function of the protective film is better, its fingerprint unlocking function may be worse; when the fingerprint unlocking function of the protective film is better, its protective function may be worse (in the selection of material and thickness, it is difficult to take into account both the protection effect and the fingerprint unlocking effect).

[0003] In view of this, it is necessary to design a protective film that can take into account both protection function and fingerprint unlocking function. Utility Model Content

[0004] The purpose of the utility model is to provide a protective film for electronic products, which has both good protection function and fingerprint unlocking function.

[0005] The utility model provides a protective film for electronic products, comprising a protective film body, wherein the protective film body comprises a transparent protective film and an adhesive layer stacked from top to bottom, wherein the transparent protective film comprises a first film portion and a second film portion, wherein the second film portion is arranged corresponding to a fingerprint unlocking portion on the screen of the electronic product;

[0006] The adhesive layer includes a first adhesive portion and a second adhesive portion, wherein the first adhesive portion is provided corresponding to the first diaphragm portion and is bonded and fixed to the first diaphragm portion; the second adhesive portion is provided corresponding to the second diaphragm portion and is bonded and fixed to the second diaphragm portion;

[0007] The first diaphragm portion and the second diaphragm portion are separate structures; and / or the first adhesive portion and the second adhesive portion are separate structures.

[0008] In one achievable manner, the second membrane portion completely covers the fingerprint unlocking portion.

[0009] In one feasible manner, the fingerprint unlocking portion is a circular structure, the second diaphragm portion is in the shape of a disc, and the diameter of the second diaphragm portion is greater than or equal to the diameter of the fingerprint unlocking portion.

[0010] In one achievable manner, the first diaphragm portion and the second diaphragm portion are made of different materials and / or have different thicknesses, and the first diaphragm portion and the second diaphragm portion are separate structures.

[0011] In one feasible manner, a first through hole is provided on the first diaphragm portion, the first through hole passes through the first diaphragm portion vertically, and the second diaphragm portion is disposed in the first through hole.

[0012] In one achievable manner, the edge side wall of the second diaphragm portion is tightly fitted with the inner wall of the first through hole.

[0013] In one achievable manner, the first adhesive portion and the second adhesive portion are made of different materials and / or have different thicknesses, and the first adhesive portion and the second adhesive portion are separate structures.

[0014] In one achievable manner, the upper surface of the first diaphragm portion is flush with the upper surface of the second diaphragm portion.

[0015] In one achievable manner, the sum of the thicknesses of the first diaphragm portion and the first adhesive portion is equal to the sum of the thicknesses of the second diaphragm portion and the second adhesive portion.

[0016] In one feasible embodiment, it also includes an upper protective film, a lower protective film and a pull-out strip, wherein the upper protective film is located on the upper side of the transparent protective film, and the transparent protective film is bonded and fixed to the upper protective film; the lower protective film is located on the lower side of the adhesive layer, and the lower protective film is bonded and fixed to the adhesive layer; the pull-out strip is located on the lower side of the lower protective film, and one end of the pull-out strip is connected to one end of the lower protective film.

[0017] The protective film for electronic products provided by the present invention, by setting the transparent protective film and / or the adhesive layer as a split structure, allows the material and / or thickness of the first diaphragm portion and the second diaphragm portion to be set to different, and / or the material and / or thickness of the first adhesive portion and the second adhesive portion to be set to different, thereby enabling the material and / or thickness of the first diaphragm portion and the second diaphragm portion, and / or the material and / or thickness of the first adhesive portion and the second adhesive portion to be selected and matched according to actual needs, so that the protective film can have both good protection function and fingerprint unlocking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a protective film for electronic products in an embodiment of the present utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the explosion structure.

[0020] Figure 3 This is a schematic structural diagram of the protective film main body in an embodiment of the present utility model.

[0021] Figure 4 for Figure 3 Schematic diagram of the explosion structure.

[0022] Figure 5 for Figure 3 Schematic cross-section of .

[0023] Figure 6 This is a schematic diagram of the explosion structure of the protective film body in another embodiment of the present invention.

[0024] Figure 7 It is a cross-sectional schematic diagram of the protective film body in another embodiment of the present invention.

[0025] Figure 8 This is a schematic structural diagram of an electronic product in an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] The terms "first", "second", "third", "fourth" and so on (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The directional terms "up," "down," "left," "right," "front," "back," "top," and "bottom" (if any) used in the specification and claims of this utility model are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are intended only for clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this utility model.

[0029] like Figures 1 to 5 and Figure 8 As shown, an embodiment of the present invention provides a protective film for electronic products, including a protective film body (not numbered in the figure), which is used to be finally attached to the screen 60 of an electronic product 6 (the electronic product 6 is, for example, a mobile phone, tablet, computer, etc.).

[0030] The protective film body comprises a transparent protective film 1 and an adhesive layer 2 stacked from top to bottom. The transparent protective film 1 is located above the adhesive layer 2. The adhesive layer 2 is used to adhere the transparent protective film 1 to the screen 60 of the electronic product 6. The transparent protective film 1 includes a first film portion 11 and a second film portion 12. The second film portion 12 is positioned to correspond to the fingerprint unlocking area 61 on the screen 60 of the electronic product 6 (i.e., the area on the screen 60 that the user's finger contacts to unlock the device). The first film portion 11 is positioned to correspond to other areas of the screen 60 (i.e., areas of the screen 60 not covered by the second film portion 12).

[0031] The adhesive layer 2 includes a first adhesive portion 21 and a second adhesive portion 22. The first adhesive portion 21 is provided corresponding to the first membrane portion 11 and is bonded and fixed to the first membrane portion 11. The first adhesive portion 21 is used to adhere the first membrane portion 11 to the screen 60. The second adhesive portion 22 is provided corresponding to the second membrane portion 12 and is bonded and fixed to the second membrane portion 12. The second adhesive portion 22 is used to adhere the second membrane portion 12 to the screen 60.

[0032] The first film portion 11 and the second film portion 12 are split structures (i.e., the first film portion 11 and the second film portion 12 are two separate parts), and / or, the first adhesive portion 21 and the second adhesive portion 22 are split structures (i.e., the first adhesive portion 21 and the second adhesive portion 22 are two separate parts); that is, at least one of the transparent protective film 1 and the adhesive layer 2 is a split structure.

[0033] The protective performance and fingerprint unlocking performance of the protective film are mainly related to its material and thickness. Among them, when the first diaphragm part 11 and the second diaphragm part 12 are split structures, the material and / or thickness of the first diaphragm part 11 and the second diaphragm part 12 can be different (limited by the manufacturing process, if the entire transparent protective film 1 is an integrated structure, the material and thickness of the first diaphragm part 11 and the second diaphragm part 12 will be the same), so the material and / or thickness of the first diaphragm part 11 and the second diaphragm part 12 can be selected according to actual needs. For example, the first diaphragm part 11 can choose a material with better protective performance (such as tempered glass with higher hardness), and the second diaphragm part 12 can choose a material that is more suitable for fingerprint unlocking; and / or, the first diaphragm part 11 can choose a thickness specification with better protective performance (such as a relatively thick thickness), and the second diaphragm part 12 can choose a thickness specification that is more suitable for fingerprint unlocking.

[0034] When the first adhesive portion 21 and the second adhesive portion 22 are separate structures, the materials and / or thicknesses of the first adhesive portion 21 and the second adhesive portion 22 can be different. Therefore, the materials and / or thicknesses of the first adhesive portion 21 and the second adhesive portion 22 can be selected based on actual needs. For example, the first adhesive portion 21 can be made of a material with higher structural strength and better adhesion to the screen 60 and the first film portion 11, thereby improving the protective performance of the protective film, while the second adhesive portion 22 can be made of a material more suitable for fingerprint unlocking; and / or the first adhesive portion 21 can be made of a thickness with better protective performance, while the second adhesive portion 22 can be made of a thickness more suitable for fingerprint unlocking.

[0035] Currently, the main unlocking methods for the screen 60 include optical fingerprint unlocking, ultrasonic fingerprint unlocking, and capacitive fingerprint unlocking. The material and thickness of the second membrane portion 12 and the material and thickness of the second adhesive portion 22 can be flexibly selected according to the fingerprint unlocking method. In other words, the material and thickness of the second membrane portion 12 and the material and thickness of the second adhesive portion 22 will affect the fingerprint unlocking performance of the protective film.

[0036] The protective film for electronic products provided by the embodiment of the present invention, by setting the transparent protective film 1 and / or the adhesive layer 2 as a split structure, can make the material and / or thickness of the first diaphragm portion 11 and the second diaphragm portion 12 different, and / or the material and / or thickness of the first adhesive portion 21 and the second adhesive portion 22 different. Therefore, the material and / or thickness of the first diaphragm portion 11 and the second diaphragm portion 12, and / or the material and / or thickness of the first adhesive portion 21 and the second adhesive portion 22 can be selected and matched according to actual needs, so that the protective film can have both good protection function and fingerprint unlocking function (that is, make fingerprint unlocking more sensitive).

[0037] like Figure 3 、 Figure 4 and Figure 8 As shown, as an embodiment, the second diaphragm portion 12 completely covers the fingerprint unlocking portion 61 (ie, the size of the second diaphragm portion 12 is greater than or equal to the size of the fingerprint unlocking portion 61), so that the protective film has a better fingerprint unlocking function.

[0038] like Figure 3 、 Figure 4 and Figure 8 As shown, as an embodiment, the fingerprint unlocking portion 61 has a circular structure, the second diaphragm portion 12 is disc-shaped, and the diameter of the second diaphragm portion 12 is greater than (slightly greater than) or equal to the diameter of the fingerprint unlocking portion 61. Preferably, the diameter of the second diaphragm portion 12 is equal to the diameter of the fingerprint unlocking portion 61. Of course, in other embodiments, the fingerprint unlocking portion 61 can also have other shapes, and the second diaphragm portion 12 can also have other shapes that mimic the fingerprint unlocking portion 61.

[0039] As an embodiment, the material and / or thickness of the first diaphragm portion 11 and the second diaphragm portion 12 are different, and / or the material and / or thickness of the first adhesive portion 21 and the second adhesive portion 22 are different; that is, at least one of the material of the first diaphragm portion 11 and the second diaphragm portion 12, the thickness of the first diaphragm portion 11 and the second diaphragm portion 12, the material of the first adhesive portion 21 and the second adhesive portion 22, and the thickness of the first adhesive portion 21 and the second adhesive portion 22 is different.

[0040] like Figures 3 to 5 As shown, as an embodiment, the first diaphragm portion 11 and the second diaphragm portion 12 are made of different materials and / or thicknesses, and are split structures (i.e., in order to make the first diaphragm portion 11 and the second diaphragm portion 12 have different materials and / or thicknesses, the two need to be set as split structures), thereby enabling the first diaphragm portion 11 and the second diaphragm portion 12 to have different properties. In this case, the first adhesive portion 21 and the second adhesive portion 22 can be an integral structure or a split structure; the first adhesive portion 21 and the second adhesive portion 22 can be made of the same material and / or thickness or different.

[0041] Specifically, in this embodiment, the first diaphragm portion 11 and the second diaphragm portion 12 are made of different materials, and have the same thickness. A first through hole 111 is provided on the first diaphragm portion 11. The first through hole 111 is a circular hole that passes through the first diaphragm portion 11 from top to bottom, and the second diaphragm portion 12 is disposed within the first through hole 111. The edge sidewalls of the second diaphragm portion 12 fit tightly against the inner wall of the first through hole 111 (i.e., the second diaphragm portion 12 and the first through hole 111 have the same shape and size), thereby eliminating a gap between the second diaphragm portion 12 and the first diaphragm portion 11, thereby improving the integrity and sealing of the second diaphragm portion 12 and the first diaphragm portion 11, and avoiding affecting the protective effect and tactile feel.

[0042] In this embodiment, the first adhesive portion 21 and the second adhesive portion 22 are an integral structure, and the material and thickness of the first adhesive portion 21 and the second adhesive portion 22 are the same (in this case, since the first diaphragm portion 11 and the second diaphragm portion 12 are separate structures, the first adhesive portion 21 and the second adhesive portion 22 are an integral structure, and the first diaphragm portion 11 and the second diaphragm portion 12 can be fixedly connected by the adhesive layer 2 to prevent the first diaphragm portion 11 and the second diaphragm portion 12 from separating before being attached to the screen 60). Figure 6 and Figure 7As shown, in another embodiment, the first adhesive portion 21 and the second adhesive portion 22 are split structures, and the second adhesive portion 22 and the second diaphragm portion 12 are the same shape and size (that is, the second adhesive portion 22 is also a circular sheet structure, and the edge of the second adhesive portion 22 is flush with the edge of the second diaphragm portion 12). A second through hole 211 is provided on the first adhesive portion 21, and the second adhesive portion 22 is arranged in the second through hole 211. The edge side wall of the second adhesive portion 22 is tightly fitted with the inner wall of the second through hole 211 (at this time, since the first diaphragm portion 11 and the second diaphragm portion 12 are split structures, the first adhesive portion 21 and the second adhesive portion 22 are also split structures. The first diaphragm portion 11 and the second diaphragm portion 12 can be fixedly connected by the upper protective film 3 described below to prevent the first diaphragm portion 11 and the second diaphragm portion 12 from separating before being attached to the screen 60).

[0043] As another embodiment, the first adhesive portion 21 and the second adhesive portion 22 are made of different materials and / or thicknesses, and are split structures (i.e., in order to make the first adhesive portion 21 and the second adhesive portion 22 have different materials and / or thicknesses, they need to be split structures), thereby enabling the first adhesive portion 21 and the second adhesive portion 22 to have different properties. In this case, the first diaphragm portion 11 and the second diaphragm portion 12 can be an integral structure or a split structure; the first diaphragm portion 11 and the second diaphragm portion 12 can be made of the same material and / or thickness or different materials.

[0044] like Figures 3 to 5 As shown, as an embodiment, the sum of the thicknesses of the first diaphragm portion 11 and the first adhesive portion 21 is equal to the sum of the thicknesses of the second diaphragm portion 12 and the second adhesive portion 22, and the upper surface of the first diaphragm portion 11 is flush with the upper surface of the second diaphragm portion 12, thereby avoiding the formation of a step between the upper surface of the first diaphragm portion 11 and the upper surface of the second diaphragm portion 12, improving the integrity and sealing of the second diaphragm portion 12 and the first diaphragm portion 11, and avoiding affecting the protection effect and touch.

[0045] Specifically, in this embodiment, the first diaphragm portion 11 and the second diaphragm portion 12 have the same thickness, and the first adhesive portion 21 and the second adhesive portion 22 have the same thickness. Of course, in other embodiments, the first diaphragm portion 11 and the second diaphragm portion 12 may have different thicknesses, and the first adhesive portion 21 and the second adhesive portion 22 may also have different thicknesses (for example, the thickness of the first diaphragm portion 11 is greater than the thickness of the second diaphragm portion 12, the thickness of the first adhesive portion 21 is less than the thickness of the second adhesive portion 22, and the sum of the thicknesses of the first diaphragm portion 11 and the first adhesive portion 21 is equal to the sum of the thicknesses of the second diaphragm portion 12 and the second adhesive portion 22).

[0046] As an embodiment, the material of the transparent protective film 1 (including the first film portion 11 and the second film portion 12) can be glass, PMMA (polymethyl methacrylate), PET (polyethylene terephthalate), PC (polycarbonate), etc., and the thickness of the transparent protective film 1 is 0.1mm-0.4mm.

[0047] As an embodiment, the adhesive layer 2 (including the first adhesive portion 21 and the second adhesive portion 22) is an optical AB adhesive (commonly used optical adhesive on the market), and the thickness of the adhesive layer 2 is 0.1mm-0.4mm. The optical AB adhesive generally has a three-layer structure, including a first adhesive layer (not shown), a base layer (not shown), and a second adhesive layer (not shown) stacked in sequence from top to bottom. The first adhesive layer is generally OCA adhesive, the second adhesive layer is generally silicone, and the base layer is generally PET base. The first adhesive layer is bonded to the transparent protective film 1, and the second adhesive layer is bonded to the screen 60.

[0048] like Figure 1 and Figure 2 As shown, as an embodiment, the protective film for electronic products also includes an upper protective film 3, a lower protective film 4 and a pull-out strip 5. The upper protective film 3, the lower protective film 4 and the pull-out strip 5 will not be ultimately attached to the screen 60. They mainly play a protective role for the protective film body and assist in attaching the protective film body to the screen 60.

[0049] The upper protective film 3 is located above the transparent protective film 1, and the transparent protective film 1 is bonded to the upper protective film 3 (the lower surface of the upper protective film 3 is provided with an adhesive layer). Positioning holes 31 are provided at both ends of the upper protective film 3. The lower protective film 4 is located below the adhesive layer 2 and is bonded to the adhesive layer 2. A pull-out strip 5 is located below the lower protective film 4, with one end of the pull-out strip 5 connected to one end of the lower protective film 4 (specifically, one end of the lower protective film 4 is provided with a lug 41, and one end of the pull-out strip 5 is bonded to the lug 41). The other end of the pull-out strip 5 is free (i.e., not connected to the lower protective film 4).

[0050] Specifically, the protective film can be used in conjunction with a film-sticking device (especially a roller-type film-sticking device) to use the film-sticking device to attach the protective film body to the screen 60. The specific structure of the roller-type film-sticking device can be referred to patents such as CN219295788U and CN218288280U.

[0051] When applying the film, first place the electronic product 6 in the roller-type film-applying device with the screen 60 facing upward. Then, the positioning holes 31 at both ends of the upper protective film 3 are respectively hooked onto the positioning posts at both ends of the roller-type film-applying device to position the protective film and the screen 60. At this time, the protective film is located above the screen 60. Pull the pull-out strip 5 to tear off the lower protective film 4 from the adhesive layer 2 to expose the lower surface of the adhesive layer 2. Use the roller in the roller-type film-applying device to roll the protective film so that the adhesive layer 2 adheres to the screen 60, that is, the transparent protective film 1 adheres to the screen 60 through the adhesive layer 2. Tear off the upper protective film 3 from the transparent protective film 1, and then remove the electronic product 6 from the roller-type film-applying device to complete the film-applying operation.

[0052] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A protective film for electronic products, comprising a protective film body, wherein the protective film body comprises a transparent protective film (1) and an adhesive layer (2) stacked from top to bottom, characterized in that: The transparent protective film (1) comprises a first film portion (11) and a second film portion (12), wherein the second film portion (12) is arranged corresponding to a fingerprint unlocking portion (61) on a screen (60) of an electronic product (6); The adhesive layer (2) comprises a first adhesive portion (21) and a second adhesive portion (22), wherein the first adhesive portion (21) is provided corresponding to the first diaphragm portion (11), and the first adhesive portion (21) is adhesively fixed to the first diaphragm portion (11); the second adhesive portion (22) is provided corresponding to the second diaphragm portion (12), and the second adhesive portion (22) is adhesively fixed to the second diaphragm portion (12); The first diaphragm portion (11) and the second diaphragm portion (12) are separate structures; and / or the first adhesive portion (21) and the second adhesive portion (22) are separate structures.

2. The protective film for electronic products according to claim 1, wherein: The second membrane portion (12) completely covers the fingerprint unlocking portion (61).

3. The protective film for electronic products according to claim 2, wherein: The fingerprint unlocking portion (61) is a circular structure, the second diaphragm portion (12) is in the shape of a circular disc, and the diameter of the second diaphragm portion (12) is greater than or equal to the diameter of the fingerprint unlocking portion (61).

4. The protective film for electronic products according to claim 1, wherein: The first diaphragm portion (11) and the second diaphragm portion (12) are made of different materials and / or different thicknesses, and the first diaphragm portion (11) and the second diaphragm portion (12) are split structures.

5. The protective film for electronic products according to claim 4, wherein: A first through hole (111) is provided on the first diaphragm portion (11), the first through hole (111) passes through the first diaphragm portion (11) vertically, and the second diaphragm portion (12) is arranged in the first through hole (111).

6. The protective film for electronic products according to claim 5, wherein: The edge side wall of the second diaphragm portion (12) is tightly fitted to the inner wall of the first through hole (111).

7. The protective film for electronic products according to claim 1, wherein: The first bonding portion (21) and the second bonding portion (22) are made of different materials and / or different thicknesses, and the first bonding portion (21) and the second bonding portion (22) are separate structures.

8. The protective film for electronic products according to claim 1, wherein: The upper surface of the first diaphragm portion (11) is flush with the upper surface of the second diaphragm portion (12).

9. The protective film for electronic products according to claim 8, wherein: The sum of the thicknesses of the first diaphragm portion (11) and the first adhesive portion (21) is equal to the sum of the thicknesses of the second diaphragm portion (12) and the second adhesive portion (22).

10. The protective film for electronic products according to any one of claims 1 to 9, characterized in that: The invention also comprises an upper protective film (3), a lower protective film (4) and a pull-out strip (5), wherein the upper protective film (3) is located on the upper side of the transparent protective film (1), and the transparent protective film (1) is bonded and fixed to the upper protective film (3); the lower protective film (4) is located on the lower side of the adhesive layer (2), and the lower protective film (4) is bonded and fixed to the adhesive layer (2); the pull-out strip (5) is located on the lower side of the lower protective film (4), and one end of the pull-out strip (5) is connected to one end of the lower protective film (4).

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