Partially perforated adhesive film

Abstract

To provide a partially perforated adhesive film that enables the front camera to function normally. [Solution] The partially perforated adhesive film includes an intermediate functional layer 2 and a base layer 1 attached to both the top and bottom surfaces of the functional layer. The functional layer has perforations corresponding to the device's front camera and optical controller, which are filled with a transparent adhesive that is pressed by the top and bottom base layers to form a single light-transmitting layer 3. The transparent adhesive is filled into the through-holes of functional layers such as the anti-peeping layer and blue light blocking layer to form a transparent layer, thereby ensuring the front camera's normal function.

Description

[Technical Field]

[0001] The present invention relates to the technical field of display aids, and in particular to partially perforated adhesive films. [Background technology]

[0002] As electronic devices such as mobile phones and tablets have become increasingly popular, screen display performance has become increasingly enhanced, resulting in a wide variety of screen protectors. Screen protectors not only provide physical protection for the screen, but also eye protection and UV protection. Mobile phones, tablets, and other electronic devices are generally equipped with front cameras. When functional protectors are applied to the screens of mobile phones and tablets, they tend to block or completely obscure the front camera. The current common solution is to perforate the screen, but this approach has the following drawbacks: 1) the screen appearance is unsightly; 2) dust is likely to accumulate during use after the perforations are perforated. Therefore, how to ensure the screen appearance and the normal operation of the front camera are both issues that need to be addressed urgently. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION The present invention aims to provide a partially perforated adhesive film to solve the problems presented in the background art. [Means for solving the problem]

[0004] To achieve the above object, the present invention provides the following technical means:

[0005] The partially perforated adhesive film includes an intermediate functional layer and a base layer that is adhered to both the upper and lower surfaces of the functional layer. The functional layer has perforations formed therein that correspond to the front camera and optical controller of the device. A transparent adhesive is filled into the perforations, and the transparent adhesive is pressed by the base layers on both the upper and lower sides to form a single light-transmitting layer.

[0006] In further embodiments, the functional layer may be an anti-peeping layer, a blue light blocking layer, a highly reflective layer, an infrared light blocking layer, a diffraction grating layer, a polarizing layer, a UV light blocking layer, a PDLC light control film, or a structured light layer, as needed.

[0007] In further embodiments, the substrate layers provided on both the upper and lower surfaces of the functional layer may be made of PET, PC, PMMA, TAC, SRF, glass, PI, PEN, nylon, TPU, or PU, as required.

[0008] In a further embodiment, the upper and lower surfaces of the light-transmitting layer are flush with the upper and lower surfaces of the functional layer, respectively, and are in close contact with the base layer on both the upper and lower sides.

[0009] In a further embodiment, the base layer is provided at its edge with a magnetic layer that is fixed in close contact with the edge of the screen.

[0010] In a further embodiment, a soft resin layer is fixed to the frame on the bottom surface of the lower base layer in a strip shape along the edge of the frame of the base layer, forming a frame attachment structure, and an adhesive layer is provided between the soft resin layer and the base layer for bonding and fixing, so that the soft resin layer is pressed against the surface of the screen by pressure, and a pressure-adhered connection and fixing structure is formed between the soft resin layer and the surface of the screen.

[0011] In a further embodiment, the lower substrate layer is coated with an adhesive that allows it to be easily attached to the surface of a display screen.

[0012] In a further embodiment, the lower substrate layer is further coated with self-venting silica gel, which allows the adhesive to be easily attached to the surface of the display screen, and realizes multiple free removals and multiple attachments. [Effects of the Invention]

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: According to the technical means of the present invention, the through-holes of functional layers such as the anti-peeping layer and the blue light blocking layer are filled with a transparent adhesive to form a transparent layer, which ensures the normal function of the front camera, and the bonding between the transparent layer and the upper and lower substrate layers is tight and consistent, which has high process requirements and combines aesthetics and practicality. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic diagram of the overall structure of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0015] In the description of the present invention, unless otherwise clearly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0016] Hereinafter, the technical means in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them, and all other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative work are all within the scope of protection of the present invention.

[0017] As shown in Figure 1, the present application provides a partially perforated adhesive film. The partially perforated adhesive film includes a middle functional layer 2 and substrate layers 1 provided in close contact with both the upper and lower surfaces of the functional layer 2. Perforations corresponding to the front camera and optical controller of the device are formed in the functional layer 2, and a transparent adhesive is filled in the perforations and pressed by the upper and lower substrate layers to form a single light-transmitting layer 3.

[0018] The functional layer 2 may be an anti-peeping layer, a blue light blocking layer, a highly reflective layer, an infrared light blocking layer, a diffraction grating layer, a polarizing layer, a UV (ultraviolet) light blocking layer, a PDLC (polymer dispersed liquid crystal) light control film, or a structured light layer, as needed. The substrate layers 1 provided on both the top and bottom of the functional layer 2 may be made of PET (polyethylene terephthalate), PC (polycarbonate), PMMA (polymethyl methacrylate), TAC (triacetyl cellulose film), SRF (super birefringent film), glass, PI (polyimide), PEN (polyethylene naphthalate), nylon, TPU (thermoplastic polyurethane elastomer), or PU (polyurethane).

[0019] The upper and lower surfaces of the light-transmitting layer 3 are flush with the upper and lower surfaces of the functional layer 2, respectively, and are in close contact with the base material layers 1 on both the upper and lower sides.

[0020] In Example 1 of the present invention, a magnetic layer is provided around the edge of the base layer 1, which is tightly attached to the edge of the screen. According to this embodiment, the entire film can be attached to the surface of the screen by the magnetic layer, and it is not disposable but can be easily removed or replaced.

[0021] In the second embodiment of the present invention, a soft resin layer is fixed to the frame on the bottom surface of the lower base layer in a strip shape along the edge of the frame of the base layer, forming a frame attachment structure. An adhesive layer is provided between the soft resin layer and the base layer for adhesion and fixation. The soft resin layer is pressed against the surface of the screen by pressure, and a pressure-adhered connection and fixation structure is formed between the soft resin layer and the surface of the screen.

[0022] In the third embodiment of the present invention, the lower substrate layer is coated with an adhesive that can be easily attached to the surface of a display screen, and the lower substrate layer is further coated with self-venting silica gel, which allows the adhesive to be easily attached to the surface of the display screen, allowing for multiple free removal and multiple attachments.

[0023] One practical application scenario of this invention is as follows: When a sticker film has a diffraction grating, conventional methods require the only way to drill holes in the sticker film, and through-holes must be drilled to ensure the front camera operates normally. According to the technical solution of this application, in the substrate of the anti-spying layer actually used, these holes are first drilled, and then the bottom substrate layer is attached. After bonding, the holes are filled with transparent adhesive. Since unevenness or the presence of air bubbles will seriously affect the function of the front camera, the process requires ensuring flatness and the absence of air bubbles. Finally, the top substrate layer is attached.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above illustrative embodiments, and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments should be considered as illustrative and not limiting. The scope of the present invention is not limited to the above description, but is limited by the appended claims, and it is therefore intended to cover all changes that come within the meaning and range of equivalents of the claims. The reference numerals of any related drawings within the claims should not be considered as limiting the scope of the claims.

[0025] It should be noted that although this specification has been described based on embodiments, each embodiment does not include only one independent technical means, and such description in the specification is merely for the sake of clarity. It should be understood that a person skilled in the art can take the specification as a whole and appropriately combine the technical means in each example to form other embodiments that can be understood by a person skilled in the art. [Explanation of symbols]

[0026] 1 Base material layer 2. Functional Layer 3 Translucent layer

Claims

1. An intermediate functional layer and a substrate layer provided in close contact with both upper and lower surfaces of the functional layer, The functional layer has perforations corresponding to the front camera and optical controller of the device; A transparent adhesive is filled into the perforations, The transparent adhesive is pressed by the upper and lower base layers to form a single light-transmitting layer. A partially perforated adhesive film characterized by:

2. The functional layer may be, as necessary, an anti-peeping layer, a blue light cut layer, a highly reflective layer, an infrared light blocking layer, a diffraction grating layer, a polarizing layer, a UV light blocking layer, a PDLC light control film, or a structured light layer.

2. The partially perforated adhesive film according to claim 1.

3. The substrate layers provided on both the upper and lower surfaces of the functional layer may be made of PET, PC, PMMA, TAC, SRF, glass, PI, PEN, nylon, TPU, or PU, as necessary.

2. The partially perforated adhesive film according to claim 1.

4. upper and lower surfaces of the light-transmitting layer are flush with upper and lower surfaces of the functional layer, The upper and lower surfaces of the light-transmitting layer are in close contact with the base material layers on both the upper and lower sides.

2. The partially perforated adhesive film according to claim 1.

5. A magnetic layer is provided around the edge of the base layer and is fixed in close contact with the edge of the screen.

2. The partially perforated adhesive film according to claim 1.

6. a soft resin layer is fixed to the frame on the bottom surface of the lower base material layer in a strip shape along the edge of the frame of the base material layer, forming a frame attachment structure; an adhesive layer for bonding and fixing the soft resin layer and the base material layer is provided between the soft resin layer and the base material layer; The soft resin layer is pressed against the surface of the screen by pressure, and a pressure-adhering type connection and fixing structure is formed between the soft resin layer and the surface of the screen.

2. The partially perforated adhesive film according to claim 1.

7. The lower base layer is coated with an adhesive that allows it to be easily attached to the surface of a display screen.

2. The partially perforated adhesive film according to claim 1.

8. The lower substrate layer is further coated with self-exhausting silica gel; The self-venting silica gel allows the adhesive to be easily attached to the surface of the display screen, allowing for multiple free removals and multiple attachments.

8. The partially perforated adhesive film according to claim 7.

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