Magnetic attraction fixing film and display module

Abstract

The utility model relates to a kind of magnetism fixed film and display mould, comprising: the PET body for fixing FPC, the PET body is provided with magnetic ink layer, magnetic ink layer is used to be adsorbed and fixed with PET body on display module, to realize the fixation of PET body to FPC, the fixation of FPC main body is realized without relying on adhesive, the problem that traditional adhesive fixed film is easily left with residual glue on product surface after tearing is eliminated, the appearance quality and cleanliness of display module are improved, since fixed by adopting magnetic adsorption principle, its adhesion effect is not influenced by time, temperature, humidity and other environmental factors, compared with the drawbacks that the adhesion performance of traditional adhesive fixed film gradually reduces with time, magnetism fixed film shows more excellent stability and durability, effectively reduces the production of defective product rate and product failure rate caused by fixation failure.

Description

Technical Field

[0001] This utility model relates to the field of display module technology, and more specifically, to a magnetically fixed film and a display module. Background Technology

[0002] In the modern smartphone manufacturing industry, the display module is one of the core components. The precision and stability of its assembly process are directly related to the quality of the final product and the user experience. In the pre-shipment processing of the display module, a key step is to precisely bend the main screen FPC (flexible printed circuit board) and attach it to the backlight frame to ensure stable circuit connection and compact overall module structure.

[0003] However, since the design of the main screen FPC usually needs to meet certain flexibility and length requirements to adapt to the complex and compact space layout inside the phone, the FPC often has a long and suspended part after being attached to the backlight iron frame. If it is not fixed, this part of the FPC is very easy to be broken or crushed by external forces during subsequent production, transportation or use, and may even cause circuit breakage, which seriously affects the reliability and service life of the product.

[0004] To address this issue, the industry commonly employs a method of applying a fixing film to the FPC (Flexible Printed Circuit) to provide necessary support and protection. However, traditional fixing films often use an adhesive-backed design. While this design can meet the fixing requirements to some extent, it has several drawbacks. Specifically, adhesive-backed films tend to leave difficult-to-remove residues on the product surface during removal. This not only affects the product's appearance but may also adversely impact subsequent assembly processes or the product's electrical performance. Furthermore, if the fixing film is misaligned during application, residues may remain on critical components such as the main screen FPC, further exacerbating the risk to product quality control. Moreover, over time, the adhesive performance of the fixing film is often affected by environmental factors (such as temperature and humidity), gradually decreasing, leading to weakened or even failed fixing. This unstable adhesion not only increases the defect rate during production but may also cause product malfunctions during subsequent use. Therefore, we propose an improvement: a magnetic fixing film and display module. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is that the adhesive fixing film easily leaves difficult-to-remove residual adhesive on the product surface and the adhesion decreases during the tearing process.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A magnetic fixing film includes: a PET body for fixing an FPC, wherein a magnetic ink layer is disposed on the PET body, the magnetic ink layer being used to adsorb and fix the PET body onto a display module, thereby achieving the fixing of the PET body to the FPC.

[0008] As an improvement of this utility model, the PET body is made of antistatic PET.

[0009] As an improvement of this utility model, the coating thickness of the magnetic ink layer is 25um-35um.

[0010] As an improvement of this utility model, the color of the magnetic ink layer is black, gray, or brown.

[0011] As an improvement of this utility model, the magnetic ink layer uses magnetic pigments, which are iron oxide black (Fe3O4) or iron oxide brown (Fe2O3), and the magnetic pigments are needle-like crystals smaller than 1 μm.

[0012] As an improvement of this utility model, the PET body also has magnetic particles, which are iron(III) oxide or iron(II) oxide, and the diameter of the magnetic particles is less than 1 μm.

[0013] As an improvement of this utility model, a tear-off handle is provided on the side of the PET body away from the magnetic ink layer, and an adhesive layer is connected between the tear-off handle and the PET body.

[0014] As an improvement of this utility model, the area of ​​the adhesive layer is smaller than the area of ​​the handle that is torn off.

[0015] A display module using magnetic fixing films includes a display module body, the display module body having an FPC body, a first fixing film and a second fixing film attached to the display module body, both the first fixing film and the second fixing film being magnetic fixing films, the first fixing film being pressed onto the FPC body, and the second fixing film being pressed onto the first fixing film.

[0016] As an improvement of this utility model, the display module body is provided with two first alignment lines, one end of the first fixing film is located between the two first alignment lines, and the display module body is also provided with a plurality of second alignment lines located on both sides of the first fixing film and a plurality of third alignment lines located on both sides of the second fixing film.

[0017] Compared with the prior art, the embodiments of this utility model have the following main advantages:

[0018] To address the issues of residues and decreased adhesion left on product surfaces during the tearing process of existing adhesive-backed films, this application employs a magnetic ink layer on the PET substrate to achieve non-adhesive magnetic fixation. This allows for the fixation of the FPC substrate without the need for adhesives, eliminating the residue problem left on the product surface after tearing traditional adhesive-backed films. This improves the appearance quality and cleanliness of the display module. Because it uses magnetic adsorption, its adhesion is unaffected by environmental factors such as time, temperature, and humidity. Compared to the drawback of traditional adhesive-backed films whose adhesion gradually decreases over time, the magnetic fixation film exhibits superior stability and durability, effectively reducing the production defect rate and product failure rate caused by fixation failure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the magnetically fixed film provided in this application;

[0020] Figure 2 A schematic diagram of the PET body and magnetic ink layer provided in this application;

[0021] Figure 3 A schematic diagram of the magnetically attached fixing film and display module provided in this application;

[0022] Figure 4 This is a schematic diagram of the structure of the display module body provided in this application.

[0023] The image shows:

[0024] 1. PET body; 101. Magnetic ink layer; 102. Magnetic particles; 103. Adhesive layer; 104. Tear-off handle; 2. Display module body; 202. FPC body; 3. First fixing film; 4. Second fixing film; 5. First alignment line; 502. Second alignment line; 503. Third alignment line. Detailed Implementation

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The reference herein to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] As described in the background section, traditional adhesive films often employ an adhesive-backed design. While this design can meet the fixing requirements to some extent, it has many drawbacks. Specifically, adhesive-backed films tend to leave difficult-to-remove residues on the product surface during the peeling process. This not only affects the product's appearance quality but may also adversely affect subsequent assembly processes or the product's electrical performance. Furthermore, if the film is misaligned during application, residual adhesive may remain on critical components such as the main screen FPC, further exacerbating the risk to product quality control. Moreover, over time, the adhesive performance of the adhesive-backed film is often affected by environmental factors (such as temperature and humidity), gradually decreasing and leading to weakened or even failed fixing. This unstable adhesion not only increases the defect rate during production but may also cause product malfunctions during subsequent use.

[0027] To solve this technical problem, this utility model provides a magnetically fixed film and a display module.

[0028] For details, please refer to Figures 1-2 The magnetic fixing film and display module specifically include:

[0029] 1 is used to fix the FPC. 1 is provided with 101. 101 is used to attach 1 to the display module to fix 1 to the FPC.

[0030] The magnetic fixing film and display module provided by this utility model achieve non-adhesive magnetic fixing by setting 101 on 1, which realizes the fixing of 202 without relying on adhesive. This eliminates the problem of residue left on the product surface after the traditional adhesive fixing film is torn off, and improves the appearance quality and cleanliness of the display module. Since the fixing is based on the principle of magnetic adsorption, its adhesion effect is not affected by environmental factors such as time, temperature, and humidity. Compared with the disadvantage of the adhesion performance of traditional adhesive fixing film gradually decreasing over time, the magnetic fixing film shows better stability and durability, effectively reducing the production defect rate and product failure rate caused by fixing failure.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] Embodiment 1 of the magnetically fixed film and display module of this utility model

[0035] Please refer to Figures 1-2 This utility model of magnetic fixing film includes: a PET body 1 for fixing an FPC, a magnetic ink layer 101 disposed on the PET body 1, the magnetic ink layer 101 being used to adsorb and fix the PET body 1 onto the display module, thereby achieving the fixing of the PET body 1 to the FPC; by disposing of the magnetic ink layer 101 on the PET body 1, non-adhesive magnetic fixing is achieved, realizing the fixing of the FPC body 202 without relying on adhesives, eliminating the problem of residue left on the product surface after traditional adhesive fixing films are peeled off, improving the appearance quality and cleanliness of the display module; since the fixing is based on the principle of magnetic adsorption, its adhesion effect is not affected by environmental factors such as time, temperature, and humidity; compared with the disadvantage of the adhesion performance of traditional adhesive fixing films gradually decreasing over time, the magnetic fixing film exhibits superior stability and durability, effectively reducing the production defect rate and product failure rate caused by fixing failure;

[0036] It should be noted that the FPC and display module mentioned in this embodiment are the FPC body 202 and display module body 2 in embodiment 2, respectively.

[0037] Furthermore, the PET body 1 is made of anti-static PET, and its color is transparent or colored, such as red, green, blue, etc., with a thickness of 0.1mm-0.15mm. Anti-static PET is an existing material, and the anti-static PET material can prevent static electricity from damaging the internal electronic components of the display module and ensure product performance; multiple color options can meet the appearance design requirements of different products.

[0038] Furthermore, the coating thickness of the magnetic ink layer 101 is 25um-35um. The magnetic ink layer 101 can be set by screen printing or spraying. The magnetic ink layer 101 is set with magnetic ink, which is an existing ink. Both screen printing and spraying processes are existing mature processes. Screen printing or spraying processes can achieve uniform coating of the magnetic ink layer 101, ensuring the consistency and reliability of the adsorption effect.

[0039] Furthermore, the magnetic ink layer 101 is black, gray, or brown; the black, gray, or brown magnetic ink layer 101 is visually understated and does not easily affect the overall appearance of the display module, and these colors are resistant to dirt and can maintain the cleanliness of the product appearance.

[0040] Furthermore, the magnetic ink layer 101 uses magnetic pigments, specifically iron oxide black (Fe3O4) or iron oxide brown (Fe2O3), and the magnetic pigments are needle-like crystals smaller than 1 μm. Iron oxide black or iron oxide brown, as magnetic pigments, have good magnetic and chemical stability. The needle-like crystal structure smaller than 1 μm can increase the dispersibility of the pigment in the ink and the orderliness of the magnetic arrangement, thereby improving the overall magnetic performance of the magnetic ink layer 101 and ensuring a stable adsorption effect.

[0041] Furthermore, the PET body 1 also has magnetic particles 102, which are iron(III) oxide or iron(II) oxide, and the diameter of the magnetic particles 102 is less than 1 μm; this further enhances the overall magnetism, making the adsorption force between the PET body 1 and the display module stronger and more stable, and improving the reliability of the fixation; the magnetic particles 102 are specifically added to the raw materials during the production process of antistatic PET. The antistatic PET production process is existing technology and is not within the scope of utility model protection, so this application will not elaborate further.

[0042] Furthermore, such as Figure 1 As shown, a tear-off handle 104 is provided on the side of the PET body 1 away from the magnetic ink layer 101, and an adhesive layer 103 is connected between the tear-off handle 104 and the PET body 1; the tear-off handle 104 is provided to facilitate the operator to quickly and accurately tear off the PET body 1.

[0043] Furthermore, such as Figure 1 As shown, the area of ​​the adhesive layer 103 is smaller than the area of ​​the tear-off handle 104, so that the edge of the tear-off handle 104 is free of adhesive, making it easier for the operator to grasp the adhesive-free part of the tear-off handle 104 for operation.

[0044] Embodiment 2 of the present invention: magnetically fixed film and display module

[0045] Please refer to Figures 3-4 This utility model discloses a display module using magnetic fixing films, including a display module body 2. The display module body 2 has an FPC body 202. A first fixing film 3 and a second fixing film 4 are attached to the display module body 2. Both the first fixing film 3 and the second fixing film 4 are magnetic fixing films. The first fixing film 3 is pressed onto the FPC body 202, and the second fixing film 4 is pressed onto the first fixing film 3. The second fixing film 4 and the first fixing film 3 cooperate to fix the FPC body 202, which enhances the firmness of the fixation, further reduces the risk of loosening or displacement of the FPC body 202, and ensures the normal operation and stable performance of the display module. Specifically, the second fixing film 4 and the first fixing film 3 are adsorbed onto the backlight iron frame of the display module body 2 using a magnetic ink layer 101.

[0046] Furthermore, the display module body 2 is provided with two first alignment lines 5, one end of the first fixing film 3 is located between the two first alignment lines 5, and the display module body 2 is also provided with a number of second alignment lines 502 located on both sides of the first fixing film 3 and a number of third alignment lines 503 located on both sides of the second fixing film 4. The alignment lines facilitate the operator to accurately attach the second fixing film 4 and the first fixing film 3 to the display module body 2, improve the accuracy and efficiency of the attachment, and reduce the problem of poor fixing effect or product defects caused by inaccurate attachment position.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A magnetically fixed film, characterized in that, include: The PET body (1) used to fix the FPC has a magnetic ink layer (101) on it. The magnetic ink layer (101) is used to adsorb and fix the PET body (1) onto the display module so as to fix the PET body (1) to the FPC.

2. The magnetically fixed film according to claim 1, characterized in that, The PET body (1) is an antistatic PET.

3. The magnetically fixed film according to claim 1, characterized in that, The coating thickness of the magnetic ink layer (101) is 25um-35um.

4. The magnetically fixed film according to claim 1, characterized in that, The magnetic ink layer (101) is black, gray, or brown.

5. The magnetically fixed film according to claim 1, characterized in that, The magnetic ink layer (101) uses magnetic pigments, which are iron oxide black (Fe3O4) or iron oxide brown (Fe2O3), and the magnetic pigments are needle-like crystals smaller than 1 μm.

6. The magnetically fixed film according to claim 1, characterized in that, The PET body (1) also has magnetic particles (102), which are iron(II) oxide or iron(III) oxide, and the diameter of the magnetic particles (102) is less than 1 μm.

7. The magnetically fixed film according to claim 1, characterized in that, The PET body (1) has a tear-off handle (104) on the side away from the magnetic ink layer (101), and an adhesive layer (103) is connected between the tear-off handle (104) and the PET body (1).

8. The magnetically fixed film according to claim 7, characterized in that, The area of ​​the adhesive layer (103) is smaller than the area of ​​the tear-off handle (104).

9. A display module using the magnetically attached film as described in any one of claims 7-8, characterized in that, The display module body (2) includes an FPC body (202), and a first fixing film (3) and a second fixing film (4) are attached to the display module body (2). The first fixing film (3) and the second fixing film (4) are both magnetic fixing films. The first fixing film (3) is pressed onto the FPC body (202), and the second fixing film (4) is pressed onto the first fixing film (3).

10. The display module according to claim 9, characterized in that, The display module body (2) is provided with two first alignment lines (5), one end of the first fixing film (3) is located between the two first alignment lines (5), and the display module body (2) is also provided with a number of second alignment lines (502) located on both sides of the first fixing film (3) and a number of third alignment lines (503) located on both sides of the second fixing film (4).

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