Module for fixing FPC (Flexible Printed Circuit) through backlight magnetic attraction
By using the magnetic connection reinforced by magnetic layer and steel sheet in the backlight magnetic fixation FPC module, the problems of low efficiency and viscosity failure of conductive double-sided sticking are solved, and more efficient production process and stable fixation are achieved. Effect.
Patent Information
- Application Number
- CN202420217303.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-29
AI Technical Summary
In the prior art, manual adhesion of conductive double-sided sticking has problems such as slow efficiency, failure of viscosity or excessive strength, resulting in residual glue, which affects production efficiency.
The module that uses backlight magnetic suction to fix the FPC is used to straighten the tail end of the FPC to the magnetic layer of the backlight iron frame, and the magnetic connection between the magnetic force and the steel sheet is strengthened, which avoids the precise alignment requirement and simplifies the Installation process.
Improve production efficiency, reduce manual movements, avoid the peeling of the adhesive layer and residual glue problems, and achieve a more stable fixing effect.
Smart Images
Figure CN222190177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display, in particular to a module for fixing a backlight FPC with magnetic attraction. Background Art
[0002] Before the mobile phone display module is shipped to the customer terminal, the main screen FPC needs to be folded onto the backlight, and most of the bottom area is fixed with conductive double-sided adhesive. In order to avoid the long neck from hanging in the air, it is fixed with adhesive paper. This is to prevent the long neck from moving around and being crushed and broken by the blister when loading. However, this method of attaching and fixing the FPC long neck with adhesive paper is generally done manually, with multiple manual actions, low efficiency, and the adhesive paper has the problem of adhesive failure and falling off or excessive adhesiveness causing residual adhesive, resulting in low production efficiency.
[0003] For example, the Chinese utility model patent (CN219267227U) discloses a display module that improves the adhesive performance of conductive double-sided adhesive, which is applied to screen display technology, including a backlight iron frame, grid lines, conductive double-sided adhesive, and FPC flexible circuit board. The grid lines are set on the backlight iron frame, and the FPC flexible circuit board is provided with an exposed copper area. The exposed copper area of the FPC flexible circuit board is covered on the grid lines by conductive double-sided adhesive. Some grid lines are made at the position where the conductive double-sided adhesive is pasted on the surface of the backlight iron frame, and the conductive double-sided adhesive is pasted on the grid lines. After the conductive double-sided adhesive is pasted and pressure-maintained, the conductive pressure-sensitive adhesive fully enters the groove of the grid lines, greatly improving the pasting area of the conductive double-sided adhesive and the iron frame, and improving the pasting performance of the conductive double-sided adhesive, thereby preventing the problem of detachment and warping of the exposed copper area of the FPC flexible circuit board, so that the production efficiency can be guaranteed to be stable, and ESD can be effectively channeled, so that the main screen is protected and the IC chip is protected.
[0004] However, when the inventor of the present invention implemented this device, he found the following defects: the conductive double-sided adhesive is manually attached, which involves multiple manual actions and is inefficient, and the adhesive film paper has the problem of losing its viscosity and falling off, or being too sticky and causing residual glue. Utility Model Content
[0005] Based on this, it is necessary to provide a module for magnetically fixing the backlight FPC in response to the above-mentioned technical problems. Since the front end of the main screen FPC is glued with a sticky layer, its position is fixed, and the tail end of the long neck of the main screen FPC needs to be pulled through the casing during installation. Therefore, it is only necessary to straighten the tail end of the long neck of the main screen FPC and stick it to the magnetic layer of the backlight iron frame. The steel sheet reinforcement and the magnetic layer are fixed by magnetic force. No precise alignment is required, and magnetic connection can be performed even nearby. When the whole machine is installed, the steel sheet reinforcement can be easily separated from the magnetic area of the backlight iron frame, which is beneficial to production efficiency.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A module for magnetically fixing a backlight FPC.
[0008] The module for magnetically fixing the backlight FPC specifically includes:
[0009] A cover plate and a backlight, wherein the backlight comprises an iron frame, an FPC is arranged on a side of the iron frame away from the cover plate, the iron frame is provided with a magnetic layer, a steel sheet reinforcement is arranged at the rear end of the FPC close to the magnetic layer, a connector is arranged on the other side of the rear end of the FPC, and the steel sheet reinforcement is magnetically connected to the iron frame through the magnetic layer.
[0010] As a preferred implementation of the backlight magnetically fixed FPC module provided by the utility model, the magnetic layer is magnetic ink.
[0011] As a preferred implementation of the backlight magnetically fixed FPC module provided by the utility model, the size of the magnetic layer is 2 mm larger than the steel sheet reinforcement.
[0012] As a preferred implementation of the module for magnetically fixing the FPC for the backlight provided by the utility model, the thickness of the steel sheet reinforcement is 0.1 mm to 0.2 mm.
[0013] As a preferred implementation of the module for magnetically fixing the FPC for the backlight provided by the utility model, the head end of the FPC is bonded to the iron frame through an adhesive layer.
[0014] As a preferred implementation of the backlight magnetically fixed FPC module provided by the utility model, the adhesive layer is a conductive double-sided adhesive or a conductive double-sided adhesive film.
[0015] As a preferred implementation of the backlight magnetically fixed FPC module provided by the utility model, the material of the steel sheet reinforcement is stainless steel.
[0016] As a preferred implementation of the module for magnetically fixing the backlight FPC provided by the utility model, the FPC is electrically connected to the iron frame.
[0017] As a preferred implementation of the backlight magnetically fixed FPC module provided by the utility model, the thickness of the magnetic layer is 0.1-0.3 mm.
[0018] As a preferred embodiment of the module for magnetically fixing the FPC of the backlight provided by the utility model, the iron frame is provided with an alignment mark for aligning the FPC.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The utility model provides a module for magnetically fixing the backlight FPC. Since the head end of the main screen FPC is adhered by the adhesive layer, its position is fixed. The tail end of the long neck of the main screen FPC needs to be pulled through the casing when installing. Therefore, it is only necessary to straighten the tail end of the long neck of the main screen FPC and stick it to the magnetic layer of the backlight iron frame. The steel sheet reinforcement and the magnetic layer are fixed by magnetic force. There is no need for precise alignment. Magnetic connection can be performed even in the vicinity. When the whole machine is installed, the steel sheet reinforcement can be easily separated from the magnetic area of the backlight iron frame, which is beneficial to production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is a schematic diagram of the structure of the module for magnetically fixing the FPC of the backlight provided by the utility model;
[0023] Figure 2 for Figure 1 A partial enlarged view of;
[0024] Figure 3 This is a stacking diagram of the module for magnetically fixing the FPC of the backlight provided by the utility model.
[0025] The markings in the figure are as follows:
[0026] Cover plate 1; backlight 2; iron frame 3; FPC 4; magnetic layer 5; steel sheet reinforcement 6; connector 7; adhesive layer 8. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0028] As in the background art, the conductive double-sided adhesive is manually attached, which involves multiple manual actions and is inefficient. In addition, the adhesive film paper may fail to stick and fall off, or be too sticky to cause residual adhesive.
[0029] In order to solve this technical problem, the utility model provides a module for magnetically fixing a backlight FPC.
[0030] Specifically, please refer to Figure 1-3 The modules for backlight magnetically fixed FPC include:
[0031] A cover plate 1 and a backlight 2, wherein the backlight 2 comprises an iron frame 3, a FPC 4 is arranged on a side of the iron frame 3 away from the cover plate 1, a magnetic layer 5 is arranged on the iron frame 3, a steel sheet reinforcement 6 is arranged at the tail end of the FPC 4 near the magnetic layer 5, a connector 7 is arranged on the other side of the tail end of the FPC 4, and the steel sheet reinforcement 6 is magnetically connected to the iron frame 3 through the magnetic layer 5.
[0032] The utility model provides a module for magnetically fixing the backlight FPC. Since the head end of the main screen FPC4 is adhered by the adhesive layer 8, its position is fixed. The tail end of the long neck of the main screen FPC4 needs to be pulled through the casing when installing. Therefore, it is only necessary to straighten the tail end of the long neck of the main screen FPC4 and stick it on the magnetic layer 5 of the iron frame 3 of the backlight 2. The steel sheet reinforcement 6 and the magnetic layer 5 are fixed by magnetic force. There is no need for precise alignment. Magnetic connection can be performed even in the vicinity. When the whole machine is installed, the steel sheet reinforcement 6 can be easily separated from the magnetic area of the iron frame 3 of the backlight 2, which is beneficial to production efficiency.
[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0036] Please refer to Figure 1-3 A module for magnetically fixing a backlight FPC comprises a cover plate 1 and a backlight 2. The backlight 2 comprises an iron frame 3. An FPC 4 is arranged on the side of the iron frame 3 away from the cover plate 1. The iron frame 3 is provided with a magnetic layer 5. A steel sheet reinforcement 6 is arranged near the magnetic layer 5 at the tail end of the FPC 4. A connector 7 is arranged on the other side of the tail end of the FPC 4. The steel sheet reinforcement 6 is magnetically connected to the iron frame 3 through the magnetic layer 5.
[0037] Through the above structural design, the steel sheet reinforcement 6 of FPC4 is close to the iron frame 3 of backlight 2, and the connector 7 is upward and away from the surface of the iron frame 3 of backlight 2. The purpose of this is to make the steel sheet reinforcement 6 of FPC4 fully contact with the magnetic layer 5 of the iron frame 3 of backlight 2. Since the head end of the main screen FPC4 is adhered by the adhesive layer 8, its position is determined, and the tail end of the long neck of the main screen FPC4 is to be pulled through the casing when installing the machine, so it is only necessary to straighten the tail end of the long neck of the main screen FPC4 and stick it on the magnetic layer 5 of the iron frame 3 of backlight 2. The steel sheet reinforcement 6 and the magnetic layer 5 can be fixed by magnetic force, without precise alignment, and magnetic connection can be performed even in the vicinity. When the whole machine is installed, the steel sheet reinforcement 6 can be easily separated from the magnetic area of the iron frame 3 of backlight 2, which is beneficial to production efficiency.
[0038] Specifically, the magnetic layer 5 is magnetic ink.
[0039] Through the above structural design, the magnetic layer 5 can magnetize the backlight 2 iron frame 3, or make magnetic ink or other magnetic materials.
[0040] Specifically, the size of the magnetic layer 5 is 2 mm larger than the steel sheet reinforcement 6 .
[0041] Through the above structural design, the magnetic layer 5 is localized in the backlight 2 iron frame 3 and is an area extending about 2 mm around the steel sheet reinforcement 6. In different situations, fine-tuning can be appropriately done according to the different sizes of the steel sheet reinforcement 6.
[0042] Specifically, the thickness of the steel sheet reinforcement 6 is 0.1 mm to 0.2 mm.
[0043] Through the above structural design, in this embodiment, the thickness of the steel sheet reinforcement 6 is selected to be 0.1mm. Different sizes of FPC4 have different corresponding thicknesses of the steel sheet reinforcement 6. When the FPC4 is relatively large, the steel sheet reinforcement 6 can be selected to be 0.2mm. The steel sheet reinforcement 6 mainly refers to 303 stainless steel reinforcement. 303 stainless steel is an austenitic, easy-to-cut, stainless, wear-resistant, acid-resistant steel containing sulfur and selenium. It is used in situations requiring easy cutting and high surface finish. The steel sheet reinforcement 6 of FPC4 often has different shapes, and stainless steel 303 is easy to etch.
[0044] Specifically, the head end of the FPC 4 is bonded to the iron frame 3 through the adhesive layer 8 .
[0045] Through the above structural design, the head end of FPC4 is fixed on the iron frame 3 through the adhesive layer 8. The adhesive layer 8 is selected to be a conductive double-sided adhesive, which is used to fix the FPC4 on the iron frame 3 without affecting the electrical connection.
[0046] Specifically, the adhesive layer 8 is a conductive double-sided adhesive or a conductive double-sided adhesive film.
[0047] Through the above structural design, in this embodiment, the adhesive layer 8 is a conductive double-sided adhesive. If the size of the FPC 4 is relatively small, a conductive double-sided adhesive film can be selected.
[0048] The module for magnetically fixing the FPC of the backlight provided in Example 1 is further optimized, such as Figure 1-3 As shown, FPC4 is electrically connected to the iron frame 3.
[0049] Through the above structural design, the head end of FPC4 is fixed on the iron frame 3 through the adhesive layer 8. The adhesive layer 8 is selected to be a conductive double-sided adhesive, which is used to fix the FPC4 on the iron frame 3 without affecting the electrical connection.
[0050] Specifically, the thickness of the magnetic layer 5 is 0.1-0.3 mm.
[0051] Through the above structural design, in the present embodiment, the thickness of the magnetic layer 5 is 0.1 mm. Since the head end of the main screen FPC4 is adhered by the adhesive layer 8, its position is fixed. When the main screen FPC4 is installed, the tail end of the long neck will be pulled through the casing. Therefore, it is only necessary to straighten the tail end of the long neck of the main screen FPC4 and stick it on the magnetic layer 5 of the backlight 2 iron frame 3. The steel sheet reinforcement 6 and the magnetic layer 5 are fixed by magnetic force. There is no need for precise alignment. Magnetic connection can be performed even nearby. When the whole machine is installed, the steel sheet reinforcement 6 can be easily separated from the magnetic area of the backlight 2 iron frame 3, which is beneficial to production efficiency.
[0052] Specifically, the iron frame 3 is provided with alignment marks for aligning the FPC 4 .
[0053] Through the above structural design, the alignment mark is used to adjust the position of FPC4 after binding.
[0054] The use process of the backlight magnetically fixed FPC module provided by the utility model is as follows:
[0055] Since the front end of the main screen FPC4 is adhered by the adhesive layer 8, its position is fixed, and the tail end of the long neck of the main screen FPC4 will be pulled through the casing when installing. Therefore, it is only necessary to straighten the tail end of the long neck of the main screen FPC4 and stick it on the magnetic layer 5 of the backlight 2 iron frame 3. The steel sheet reinforcement 6 and the magnetic layer 5 are fixed by magnetic force. There is no need for precise alignment, and magnetic connection can be performed even nearby. When the whole machine is installed, the steel sheet reinforcement 6 can be easily separated from the magnetic area of the backlight 2 iron frame 3, which is beneficial to production efficiency.
[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0057] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.
Claims
1. A module for magnetically fixing FPC of backlight, characterized in that: The invention comprises a cover plate (1) and a backlight (2), wherein the backlight (2) comprises an iron frame (3), a FPC (4) is arranged on a side of the iron frame (3) away from the cover plate (1), the iron frame (3) is provided with a magnetic layer (5), a steel sheet reinforcement (6) is arranged at the rear end of the FPC (4) close to the magnetic layer (5), a connector (7) is arranged on the other side of the rear end of the FPC (4), and the steel sheet reinforcement (6) is magnetically connected to the iron frame (3) through the magnetic layer (5).
2. The module for magnetically fixing the FPC of the backlight according to claim 1, characterized in that: The magnetic layer (5) is magnetic ink.
3. The module for magnetically fixing the FPC of the backlight according to claim 2, characterized in that: The size of the magnetic layer (5) is 2 mm larger than that of the steel sheet reinforcement (6).
4. The module for magnetically fixing the FPC of the backlight according to claim 3, characterized in that: The thickness of the steel sheet reinforcement (6) is 0.1 mm to 0.2 mm.
5. The module for magnetically fixing the FPC of the backlight according to claim 4, characterized in that: The head end of the FPC (4) is bonded to the iron frame (3) via an adhesive layer (8).
6. The module for magnetically fixing the FPC of the backlight according to claim 5, characterized in that: The adhesive layer (8) is a conductive double-sided adhesive or a conductive double-sided adhesive film.
7. The module for magnetically fixing the FPC of the backlight according to claim 1, characterized in that: The material of the steel sheet reinforcement (6) is stainless steel.
8. The module for magnetically fixing the FPC of the backlight according to claim 1, characterized in that: The FPC (4) is electrically connected to the iron frame (3).
9. The module for magnetically fixing the FPC of the backlight according to claim 1, characterized in that: The thickness of the magnetic layer (5) is 0.1-0.3 mm.
10. The module for magnetically fixing the FPC of the backlight according to claim 1, characterized in that: The iron frame (3) is provided with a positioning mark for aligning the FPC (4).