Bending FPC

Abstract

The embodiment of the utility model relates to the technical field of FPC. The utility model also relates to a bending FPC, which comprises an FPC main body, the FPC main body is provided with a bending area, the bending area comprises an upper wiring layer, and two sides of the upper wiring layer are respectively provided with a covering film layer and a PI sheet layer. According to the invention, wiring is carried out only by the upper wiring layer, and a BOTTOM layer of a traditional FCP is removed from the bending area, so that the bending area is thinner and softer, the FPC main body can be easily bent from the bending area, the outward pulling force after bending is greatly reduced, and the display problem caused by loosening of the connector is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC, and more specifically, to a bent FPC. Background Art

[0002] Due to the characteristics of AMOLED display, bright effect, high contrast and small screen, it is widely used in smart watch projects. Smart watches have more and more comprehensive functions, integrating touch, display, NFC payment and other functions. So many functional components need to be integrated in the narrow space of smart watches, so the layout and placement of components are quite special. In order to meet the aesthetic requirements of customers, the placement of various components needs to meet the structural requirements.

[0003] Due to usage requirements, the FPC connector end needs to be bent 90 degrees and the FPC male connector needs to be buckled onto the motherboard female connector. In the prior art, the FPC has multiple wiring layers and multiple insulation layers, which makes the thickness of the bending area thicker. In addition, since the material of the FPC itself is relatively hard, the bending area will generate an outward pulling force after bending. As the customer uses the whole machine, the male connector and the female connector on the FPC will loosen, causing poor contact. Therefore, we have made improvements to this and proposed a bending FPC.

[0004] For example, a Chinese patent (publication number CN220023165U) discloses an FPC with an auxiliary routing layer, which includes two parallel routing layers, one routing layer and another routing layer, an auxiliary routing layer is arranged between the routing layer one and the routing layer two, the auxiliary routing layer is used to replicate the corresponding circuits on the routing layer one or the routing layer two, and the replicated circuits on the auxiliary routing layer are electrically connected to the corresponding circuits on the routing layer one or the routing layer two through perforations, and an insulating layer is arranged on both sides of the auxiliary routing layer and between the routing layer one and the routing layer two. The above patents can prove the defects of the prior art. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present utility model is that the bending area will generate an outward pulling force, which will cause the male connector and the female connector on the FPC to loosen as the customer uses the whole machine, thereby causing poor contact.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A bent FPC, characterized in that it comprises: an FPC body, the FPC body having a bending area, the bending area comprising an upper wiring layer, and a covering film layer and a PI sheet layer are respectively arranged on both sides of the upper wiring layer.

[0008] As an improved manner of the utility model, it further comprises a gold finger body, and the gold finger body is connected to one end of the FPC body.

[0009] As an improved manner of the utility model, it further comprises a male connector body, wherein the male connector body is connected to the other end of the FPC body.

[0010] As an improved manner of the utility model, it also includes an auxiliary support structure, and the auxiliary support structure is used for auxiliary support at the bending point of the bending area.

[0011] As an improved manner of the present utility model, the auxiliary support structure includes an auxiliary support member, and the auxiliary support member is arranged at a bending position of the bending area.

[0012] As an improvement of the present invention, the auxiliary support member is used for auxiliary support when the bending area is bent.

[0013] As an improved manner of the utility model, the auxiliary support member is connected to an electrostatic conductive member, and the electrostatic conductive member and the auxiliary support member cooperate to achieve auxiliary release of static electricity on the FPC body.

[0014] As an improvement of the utility model, the electrostatic conductive component includes two metal conductive soft wires, one end of the two metal conductive soft wires is fixedly connected to the supporting arc plate, and the other end of the two metal conductive soft wires is fixedly connected to the conductive plate.

[0015] As an improved manner of the utility model, the outer surface of the metal conductive soft wire is covered with an insulating skin.

[0016] As an improvement of the utility model, a mounting hole is provided on the metal conductive soft wire, and the mounting hole is used to achieve the connection between the conductive sheet and the mainboard grounding.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem that the bending zone in the prior art will generate outward pulling force, which will cause the male connector and the female connector on the FPC to loosen as the customer uses the whole machine, thereby causing poor contact. The routing of the present application only relies on the upper routing layer, and the BOTTOM layer of the traditional FCP is removed in the bending area, making the bending area thinner and softer, so that the FPC body can be easily bent from the bending area, and the outward pulling force after bending will be greatly reduced, solving the display problem caused by the loosening of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the bent FPC provided in this application;

[0020] Figure 2 A schematic diagram of the layered structure of the bending area of ​​the bent FPC provided in this application;

[0021] Figure 3 A schematic diagram of the structure of the auxiliary support structure of the bent FPC provided in this application;

[0022] Figure 4 A schematic diagram of the structure of the auxiliary support structure of the bent FPC provided in this application.

[0023] Indicated in the figure:

[0024] 1. FPC body; 101. Bending area; 102. Male connector body; 103. Gold finger body; 1011. Covering film layer; 1012. Upper wiring layer; 1013. PI sheet layer; 2. Auxiliary support structure; 201. Support arc sheet; 202. Metal conductive soft wire; 203. Conductive sheet; 204. Mounting hole. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] As described in the background technology, due to usage requirements, it is necessary to bend the FPC connector end 90 degrees and buckle the FPC male connector onto the motherboard female connector. In the prior art, the FPC has multiple wiring layers and multiple insulation layers, which makes the thickness of the bending area also relatively thick. In addition, since the material of the FPC itself is relatively hard, the bending area will generate outward pulling force after bending. As the customer uses the whole machine, the male connector and the female connector on the FPC will loosen, causing poor contact.

[0027] In order to solve this technical problem, the utility model provides a bent FPC.

[0028] Specifically, please refer to Figure 1-Figure 2 , bending FPC specifically includes:

[0029] The FPC body 1 has a bending area 101 , and the bending area 101 includes an upper wiring layer 1012 . A covering film layer 1011 and a PI sheet layer 1013 are respectively disposed on both sides of the upper wiring layer 1012 .

[0030] The bendable FPC provided by the present invention relies on the upper wiring layer 1012 for routing, and the BOTTOM layer of the traditional FCP is removed in the bending area 101, so that the bending area 101 is thinner and softer, so that the FPC body 1 can be easily bent from the bending area 101, and the outward pulling force after bending will be greatly reduced, thereby solving the display problem caused by the loosening of the connector.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Embodiment 1 of the utility model of bending FPC

[0035] Please refer to Figure 1-Figure 2 The utility model comprises a bendable FPC including an FPC body 1, the FPC body 1 having a bend area 101, the bend area 101 including an upper wiring layer 1012, and a covering film layer 1011 and a PI sheet layer 1013 are respectively arranged on both sides of the upper wiring layer 1012; the wiring of the present application is only carried out by the upper wiring layer 1012, and the bending area 101 removes the BOTTOM layer of the traditional FCP, so that the bending area 101 is thinner and softer, so that the FPC body 1 can be easily bent from the bending area 101, and the outward pulling force after bending will be greatly reduced, solving the display problem caused by the loosening of the connector.

[0036] Embodiment 2 of the utility model of bending FPC

[0037] Please refer to Figure 1-Figure 2The utility model comprises a bendable FPC including an FPC body 1, the FPC body 1 having a bend area 101, the bend area 101 including an upper wiring layer 1012, and a covering film layer 1011 and a PI sheet layer 1013 are respectively arranged on both sides of the upper wiring layer 1012; the wiring of the present application is only carried out by the upper wiring layer 1012, and the bending area 101 removes the BOTTOM layer of the traditional FCP, so that the bending area 101 is thinner and softer, so that the FPC body 1 can be easily bent from the bending area 101, and the outward pulling force after bending will be greatly reduced, solving the display problem caused by the loosening of the connector.

[0038] Further, such as Figure 1 As shown, it also includes a gold finger body 103, which is connected to one end of the FPC body 1. The gold finger body 103 is not only a link between the FPC body 1 and other electronic components, but also a key component for realizing signal and current transmission. The design of the gold finger body 103 enables the electronic components to be reliably electrically connected to the FPC body 1, thereby ensuring the normal operation of the entire circuit system; the surface of the gold finger body 103 is usually electroplated with a layer of metal material, such as gold or gold alloy, which greatly enhances its conductive performance, so that signals and currents can be transmitted efficiently and stably. At the same time, this layer of metal material also gives the gold finger body 103 excellent wear resistance, and can withstand frequent plugging and unplugging and external pressure, thereby maintaining long-term reliability; in addition, the gold finger body 103 is also treated with anti-corrosion to enhance its corrosion resistance and oxidation resistance. This treatment The gold finger body 103 can maintain its performance under various harsh environmental conditions, prolong its service life, and provide a stable electrical connection for the electronic equipment. In short, the gold finger body 103, with its excellent conductivity, wear resistance and corrosion resistance, provides great convenience for the design of the FPC body 1, and also provides a solid guarantee for the normal operation of the electronic equipment. Whether in terms of connection, transmission or durability, the gold finger plays a vital role and is an indispensable part of the electronic equipment. Common anti-corrosion treatment methods include coating a protective layer and using a preservative. The protective layer can be a thin film or a coating, which can isolate the gold finger body 103 from direct contact with the external environment and reduce the possibility of corrosion and oxidation, while the preservative can penetrate into the surface of the gold finger body 103 to form a protective chemical reaction layer to further prevent the occurrence of corrosion.

[0039] Further, such as Figure 1As shown, it also includes a male connector body 102, which is connected to the other end of the FPC body 1; the male connector body 102 on the bending area 101 plays a vital role in electronic equipment and is one of the key components to ensure the functional integrity and stability of the equipment; first of all, the male connector body 102 serves as a stable connection bridge between the FPC body 1 and other electronic components, which not only provides a physical connection, but also ensures the accurate and efficient transmission of signals and currents. This stable and reliable connection is the basis for electronic equipment to realize its various functions, from simple signal transmission to complex data processing. The function of the male connector body 102; secondly, the high reliability of the male connector body 102 is an important reason for its wide application. In harsh working environments, such as high temperature, high humidity, vibration, etc., the male connector body 102 can still maintain stable connection performance to ensure the normal operation of the circuit; the versatility and ease of maintenance of the male connector body 102 are also its advantages. Male connector bodies 102 of different brands and models usually follow a unified interface standard, making replacement and maintenance simpler and more convenient. At the same time, the modular design of the male connector body 102 also reduces maintenance costs and time, and improves the overall reliability of the equipment.

[0040] Embodiment 3 of the bent FPC of the utility model

[0041] Please refer to Figure 1-Figure 2 The utility model comprises a bendable FPC including an FPC body 1, the FPC body 1 having a bend area 101, the bend area 101 including an upper wiring layer 1012, and a covering film layer 1011 and a PI sheet layer 1013 are respectively arranged on both sides of the upper wiring layer 1012; the wiring of the present application is only carried out by the upper wiring layer 1012, and the bending area 101 removes the BOTTOM layer of the traditional FCP, so that the bending area 101 is thinner and softer, so that the FPC body 1 can be easily bent from the bending area 101, and the outward pulling force after bending will be greatly reduced, solving the display problem caused by the loosening of the connector.

[0042] Further, such as Figure 1 As shown, it also includes a gold finger body 103, which is connected to one end of the FPC body 1. The gold finger body 103 is not only a link between the FPC body 1 and other electronic components, but also a key component for realizing signal and current transmission. The design of the gold finger body 103 enables the electronic components to be reliably electrically connected to the FPC body 1, thereby ensuring the normal operation of the entire circuit system.

[0043] Further, such as Figure 1 As shown, it also includes a male connector body 102 , which is connected to the other end of the FPC body 1 .

[0044] Further, such as Figure 3-Figure 4 As shown, an auxiliary support structure 2 is also included, and the auxiliary support structure 2 is used for auxiliary support at the bending portion of the bending region 101 to reduce the situation where the bending region 101 breaks after being completed.

[0045] Further, such as Figure 3-Figure 4 As shown, the auxiliary support structure 2 includes an auxiliary support member, and the auxiliary support member is arranged at the bending position of the bending area 101, thereby achieving support for the bending area 101 after bending.

[0046] Further, such as Figure 3 As shown, the auxiliary support member is used for auxiliary support when the bending area 101 is bent.

[0047] Furthermore, the auxiliary support member is connected to an electrostatic conductive member, and the electrostatic conductive member and the auxiliary support member are used together to achieve auxiliary release of static electricity on the FPC body 1, that is, to reduce the accumulation of static electricity on the FPC body 1. The accumulation of static electricity on the FPC body 1 may cause damage to components, especially when the static electricity accumulates to a certain extent, it may cause device breakdown, resulting in failure of the electrical network connection in the circuit board or collapse of the logic circuit; arcs and sparks may be generated when static electricity is released, and these sparks may burn the conductive material on the board, causing physical damage to the FPC body 1.

[0048] Further, such as Figure 3-Figure 4 As shown, the electrostatic conductive component includes two metal conductive soft wires 202, one end of the two metal conductive soft wires 202 is fixedly connected to the supporting arc piece 201, the other end of the two metal conductive soft wires 202 is fixedly connected to the conductive sheet 203, the FPC body 1 is also in contact with the supporting arc piece 201, the static electricity on the FPC body 1 can be transferred to the supporting arc piece 201, and the supporting arc piece 201 is also made of conductive material.

[0049] Furthermore, the outer surface of the metal conductive soft wire 202 is covered with an insulating skin, and the provision of the insulating skin can prevent the outer surface of the metal conductive soft wire 202 from contacting other devices and causing a short circuit.

[0050] Further, such as Figure 4 As shown, a mounting hole 204 is provided on the metal conductive soft wire 202, and the mounting hole 204 is used to realize the connection between the conductive sheet 203 and the grounding terminal of the mainboard, that is, when in use, the conductive sheet 203 is connected to the grounding terminal of the mainboard through the bolts and the mounting hole 204, so that the static electricity on the FPC body 1 can be transferred to the grounding terminal of the mainboard through the supporting arc sheet 201, the metal conductive soft wire 202 and the conductive sheet 203, thereby realizing the release of static electricity.

[0051] 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 bent FPC, characterized in that: include: An FPC body (1) having a bending area (101), the bending area (101) comprising an upper wiring layer (1012), and a covering film layer (1011) and a PI sheet layer (1013) being respectively arranged on both sides of the upper wiring layer (1012).

2. The bent FPC according to claim 1, characterized in that: It also includes a gold finger body (103), wherein the gold finger body (103) is connected to one end of the FPC body (1).

3. The bent FPC according to claim 2, characterized in that: It also includes a male connector body (102), which is connected to the other end of the FPC body (1).

4. The bent FPC according to claim 3, characterized in that: It also comprises an auxiliary support structure (2), wherein the auxiliary support structure (2) is used for auxiliary support at the bending point of the bending area (101).

5. The bent FPC according to claim 4, characterized in that: The auxiliary support structure (2) comprises an auxiliary support member, and the auxiliary support member is arranged at the bending part of the bending area (101).

6. The bent FPC according to claim 5, characterized in that: The auxiliary support member is used for auxiliary support when the bending area (101) is bent.

7. The bent FPC according to claim 6, characterized in that: The auxiliary support member is connected to an electrostatic conductive member, and the electrostatic conductive member and the auxiliary support member cooperate to achieve auxiliary release of static electricity on the FPC body (1).

8. The bent FPC according to claim 7, characterized in that: The electrostatic conductive component comprises two metal conductive soft wires (202), one end of each of the two metal conductive soft wires (202) is fixedly connected to the supporting arc sheet (201), and the other end of each of the two metal conductive soft wires (202) is fixedly connected to the conductive sheet (203).

9. The bent FPC according to claim 8, characterized in that: The outer surface of the metal conductive soft wire (202) is covered with an insulating skin.

10. The bent FPC according to claim 9, characterized in that: The metal conductive soft wire (202) is provided with a mounting hole (204), and the mounting hole (204) is used to achieve grounding connection between the conductive sheet (203) and the mainboard.

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