Flexible printed circuit (FPC) structure convenient to plug
By slotting in the plug-in position of the second FPC main body, the connection part and the connection head protrude directly from the long groove, the problem of easy breakage after the FPC is bent, and higher reliability and lower cost are achieved.
Patent Information
- Application Number
- CN202421420570.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing FPC structure is prone to overall rebound and breaking after bending, which poses reliability risks, is inconvenient for operation, and has low imposition utilization, resulting in high cost.
The slot is made in the plug-in position of the second FPC main body so that the connecting part and the connecting head can directly extend from the right side of the long groove to avoid bending, and the connecting part is arranged inside the second FPC main body to achieve a first-stage molding.
It improves the reliability of FPC, avoids the risk of breakage, simplifies the operation process, improves the utilization rate of the imposition, and reduces costs.
Smart Images
Figure CN222672083U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of FPC structures, in particular to an FPC structure which is convenient for plugging. Background Art
[0002] With the rapid development of the electronics industry and information technology, display screens, as important components of electronic products, have been used in more and more products, such as mobile phones, digital cameras, car displays and other products. At the same time, display modules have the advantages of light weight, thin thickness, and low power consumption. Since the liquid crystal display panel in the display module itself does not emit light, a backlight source is required to provide light so that viewers can see the image displayed by the liquid crystal display panel.
[0003] The existing display module structure uses FPC to achieve signal connection with the customer's mainboard, such as Figure 1 and Figure 2 As shown, the FPC112 of the display module 111 needs to be bent before being plugged in. After the FPC is bent, it is not only easy to rebound as a whole, but also easy to break under the action of external force, which poses a serious reliability risk. At the same time, this conventional design is not convenient to operate, and the FPC panel utilization rate is low, resulting in high costs. Utility Model Content
[0004] Based on this, it is necessary to provide an FPC structure that is easy to plug in to address the above technical problems. By making grooves at the corresponding plug-in position of the second FPC body, the connecting part and the connecting head can extend directly from the right side of the long groove. The connecting head does not need to be bent when it is plugged into the mainboard and can be used directly, thereby avoiding bending the FPC under external force, making it less likely for the FPC to break, and having better reliability when used. At the same time, the connecting part is arranged inside the second FPC body. During manufacturing, the second FPC body and the connecting part can be formed in one plate, which not only has a high utilization rate but also can reduce costs.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A convenient plug-in FPC structure includes: a display module and an FPC connection module, wherein the FPC connection module is connected to the display module, and the FPC connection module includes a first FPC body, a second FPC body, a connection part and a connection head which are connected in sequence, a long groove is opened on the second FPC body, and the connection part is fixedly connected to the right inner wall of the long groove.
[0007] Furthermore, the connecting portion and the connecting head are both located inside the long slot, and the second FPC body, the connecting portion and the connecting head are overall in a rectangular structure.
[0008] Furthermore, a first gap is left between the front and rear sides of the connecting portion and the inner wall of the long groove, a second gap is left between the left side of the connecting head and the inner wall of the long groove, and the right inner wall of the long groove and the connecting portion are connected via a rounded transition.
[0009] Furthermore, the first FPC body, the second FPC body and the connecting portion are integrally formed.
[0010] Furthermore, a plurality of through holes are formed on the first FPC body, and the through holes are circular or elliptical in shape.
[0011] Furthermore, the first FPC body, the second FPC body and the connecting part each include a base layer, two copper foil layers and two covering layers, the base layer is located between the two copper foil layers, and the copper foil layer is located between the base layer and the covering layer.
[0012] Furthermore, the base layer and the cover layer at the rounded corners extend outwards and form extended edges.
[0013] Furthermore, the width of the extended edge is 0.8-1.5 mm.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] The convenient plug-in FPC structure provided by the utility model is slotted at the corresponding plug-in position of the second FPC main body, so that the connecting part and the connecting head can be directly extended from the right side of the long slot, and the connecting head does not need to be bent when being plugged into the main board, and can be directly used, thereby avoiding bending of the FPC under the action of external force, and is not easy to cause the FPC to break, and has better reliability when used. At the same time, the connecting part is arranged inside the second FPC main body, and the second FPC main body and the connecting part can be formed in one plate during manufacturing, which not only has a high utilization rate but also can reduce costs.
[0016] The utility model provides an FPC structure that is convenient for plugging. By setting a through hole on the first FPC body, and the through hole is a circular or elliptical structure, no edges or corners appear, and the elastic stress of the bending of the first FPC body can be effectively released, the bending effect and toughness are guaranteed, and the reliability during use is improved.
[0017] The utility model provides an FPC structure that is convenient for plugging in. By setting a rounded corner between the right inner wall of the long groove and the connecting part, the stress can be reduced to avoid tearing between the connecting part and the second FPC body. At the same time, a technical means of extending the base layer and the covering layer outward is adopted, so that the edge of the copper foil layer can be extended by a small section of the extended edge to cover, thereby providing a buffer for the rounded corner portion at the connection between the second FPC body and the connecting part, so that the stress point at this position can be dispersed, so that it is not easy to cause it to be broken when the connecting part is bent, thereby greatly reducing the risk of being torn, improving the overall reliability, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of an existing FPC structure that is convenient for plugging provided by the utility model;
[0019] Figure 2 A schematic diagram of an existing FPC structure that is convenient for plugging provided by the utility model;
[0020] Figure 3 A schematic diagram of a convenient plug-in FPC structure provided by the utility model;
[0021] Figure 4 A schematic diagram of a convenient plug-in FPC structure provided by the utility model;
[0022] Figure 5 A schematic diagram of a convenient plug-in FPC structure provided by the utility model;
[0023] Figure 6 The FPC structure provided by the utility model is convenient for plugging Figure 5 A schematic diagram of the enlarged structure at the center;
[0024] Figure 7 The utility model provides a cross-sectional structural diagram of an FPC structure that is convenient for plugging.
[0025] The markings in the figure are as follows:
[0026] 1. Display module; 2. FPC connection module; 3. First FPC body; 4. Second FPC body; 5. Connection part; 6. Connector; 7. Long groove; 8. First gap; 9. Second gap; 10. Fillet; 11. Base layer; 12. Copper foil layer; 13. Cover layer; 14. Extended edge; 301. Through hole. 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 mentioned in the background art, after the existing FPC is bent, it is not only easy to rebound as a whole, but also easy to break under the action of external force, which poses a serious reliability risk. At the same time, this conventional design is inconvenient to operate, and the FPC panel utilization rate is low, resulting in high costs.
[0029] In order to solve this technical problem, the utility model provides an FPC structure that is convenient for plugging, which is applied to improve the display module and the FPC structure, avoid the breakage of the FPC, and reduce the cost.
[0030] Specifically, please refer to Figure 2-7 , the FPC structure that is convenient for plugging includes:
[0031] Display module 1 and FPC connection module 2, FPC connection module 2 is connected to display module 1, FPC connection module 2 includes a first FPC body 3, a second FPC body 4, a connection part 5 and a connection head 6 which are connected in sequence, the connection head 6 can be a plug or a connector with a gold finger, which is a prior art and will not be described in detail here, a long groove 7 is provided on the second FPC body 4, the connection part 5 is fixedly connected to the right inner wall of the long groove 7, the display module 1 includes a circuit board, LCD glass, an upper polarizer, a lower polarizer, a backlight source and a driver IC, the first FPC body 3 is connected to the LCD glass and the backlight source, the upper polarizer and the lower polarizer are respectively arranged on the upper and lower surfaces of the LCD glass, the driver IC is pressed to the corresponding position of the LCD glass under high temperature and high pressure through conductive glue, the driver IC is electrically connected to the display module 1, the LCD itself does not emit light, and the backlight source is required to provide light so that the viewer can see the image displayed on the liquid crystal display panel.
[0032] The convenient plug-in FPC structure provided by the utility model is slotted at the corresponding plug-in position of the second FPC body 4, so that the connecting portion 5 and the connector 6 can directly extend from the right side of the long slot 7, and the connector 6 does not need to be bent when plugged into the mainboard, and can be used directly, thereby avoiding bending the FPC under external force, and is not easy to break the FPC, and the reliability is better when used, such as Figure 1 and Figure 2 As shown, the widths of existing FPCs are 56 mm and 102 mm respectively. Figure 3-7 As shown, it is a schematic diagram of the convenient plug-in FPC structure provided by the utility model. The width of the second FPC body 4 is only 56 mm, and a long groove 7 is opened in the middle. Since the connecting part 5 is arranged inside the second FPC body 4, the second FPC body 4 and the connecting part 5 can be formed in one plate during manufacturing, which not only has a high utilization rate but also can reduce costs.
[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 2-7 , a convenient plug-in FPC structure, which includes a display module 1 and an FPC connection module 2, the FPC connection module 2 is connected to the display module 1, the FPC connection module 2 includes a first FPC body 3, a second FPC body 4, a connection part 5 and a connection head 6 connected in sequence, the connection head 6 can be a plug or a connector with a gold finger, this is a prior art, and no detailed description is given here, a long groove 7 is opened on the second FPC body 4, the connection part 5 is fixedly connected to the right inner wall of the long groove 7, the display module 1 includes a circuit board, LCD glass, an upper polarizer, a lower polarizer, a backlight source and a driver IC, the first FPC body 3 connects the LCD glass and the backlight source, the upper polarizer and the lower polarizer are respectively arranged on the upper and lower surfaces of the LCD glass, the driver IC is pressed to the corresponding position of the LCD glass under high temperature and high pressure through a conductive glue, the driver IC is electrically connected to the display module 1, the LCD itself does not emit light, and a backlight source is required to provide a light source so that the viewer can see the image displayed on the liquid crystal display panel.
[0037] The FPC structure provided by the present embodiment is convenient for plugging, by slotting at the corresponding plugging position of the second FPC body 4, so that the connecting portion 5 and the connector 6 can be directly extended from the right side of the long slot 7, and the connector 6 does not need to be bent when plugged into the mainboard, and can be used directly, thereby avoiding bending the FPC under external force, and it is not easy to break the FPC, and the reliability is better when used;
[0038] like Figure 1 and Figure 2 As shown, the widths of existing FPCs are 56 mm and 102 mm respectively. Figure 3-7As shown, it is a schematic diagram of the convenient plug-in FPC structure provided by the utility model. The width of the second FPC body 4 is only 56 mm, and a long groove 7 is opened in the middle. Since the connecting part 5 is arranged inside the second FPC body 4, the second FPC body 4 and the connecting part 5 can be formed in one plate during manufacturing, which not only has a high utilization rate but also can reduce costs.
[0039] The FPC structure for convenient plugging provided in Example 1 is further optimized. Specifically, Figure 4-6 As shown, the connecting portion 5 and the connecting head 6 are both located inside the long groove 7, and the second FPC body 4, the connecting portion 5 and the connecting head 6 are overall rectangular structures; in this way, the second FPC body 4 and the connecting portion 5 can be processed and manufactured using one version.
[0040] A first gap 8 is left between the front and rear sides of the connecting portion 5 and the inner wall of the long groove 7, a second gap 9 is left between the left side of the connecting head 6 and the inner wall of the long groove 7, and the right inner wall of the long groove 7 and the connecting portion 5 are transitionally connected by a rounded corner 10.
[0041] Through the above structural design, the connecting part 5 can move freely in the long groove 7, and there is no need to bend the connector 6 when it is plugged into the mainboard. At the same time, a rounded corner 10 is provided between the right inner wall of the long groove 7 and the connecting part 5, which can reduce the generation of stress and avoid tearing between the connecting part 5 and the second FPC body 4.
[0042] The convenient plug-in FPC structure provided in Example 1 or 2 is further optimized, such as Figure 5-6 As shown, the first FPC body 3, the second FPC body 4 and the connecting portion 5 are integrally formed; a plurality of through holes 301 are provided on the first FPC body 3, and the through holes 301 are circular or elliptical structures.
[0043] In this configuration, a through hole 301 is provided on the first FPC body 3, and the through hole 301 is a circular or elliptical structure without any edges or corners, which can effectively release the elastic stress of the bending of the first FPC body 3, ensure the bending effect and toughness, and improve the reliability during use.
[0044] The convenient plug-in FPC structure provided in the above embodiments is further optimized, such as Figure 5-7As shown, the first FPC body 3, the second FPC body 4 and the connecting portion 5 all include a base layer 11, two copper foil layers 12 and two covering layers 13, the base layer 11 is located between the two copper foil layers 12, and the copper foil layer 12 is located between the base layer 11 and the covering layer 13; the base layer 11 and the covering layer 13 at the fillet 10 extend outward and form an extended edge 14, and the width of the extended edge 14 is 0.8-1.5mm, for example 0.9mm, 1mm, 1.2mm, etc. Of course, if the extended edge 14 is too long, it will also affect the bending performance, so the base layer 11 and the covering layer 13 at the fillet 10 extend outward and form an extended edge 14. The distance beyond the copper foil layer 12 depends on the bending condition of the connecting portion 5.
[0045] Such a structural design adopts the technical means of extending the base layer 11 and the covering layer 13 outward, so that the edge of the copper foil layer 12 can be covered by a small extension edge 14, thereby providing a buffer for the fillet 10 at the connection between the second FPC body 4 and the connecting part 5, so that the stress point at this position can be dispersed, making it less likely to cause the connecting part 5 to be broken when it is bent, greatly reducing the risk of being torn.
[0046] The use process of the FPC structure that is convenient for plugging provided by the utility model is as follows:
[0047] By making a groove at the corresponding plug-in position of the second FPC body 4, the connecting part 5 and the connecting head 6 can be directly extended from the right side of the long groove 7. When the connecting head 6 is plugged into the main board, it does not need to be bent and can be used directly, thereby avoiding bending of the FPC under the action of external force, and it is not easy to cause the FPC to break. The reliability is better when used. At the same time, the connecting part 5 is arranged inside the second FPC body 4. During manufacturing, the second FPC body 4 and the connecting part 5 can be formed in one version, which not only has a high utilization rate but also can reduce costs. By arranging a fillet 10 between the right inner wall of the long groove 7 and the connecting part 5, the stress can be reduced and tearing between the connecting part 5 and the second FPC body 4 can be avoided. At the same time, the technical means of extending the base layer 11 and the covering layer 13 outward is adopted, so that the edge of the copper foil layer 12 can be extended by a small section of the extended edge 14 to cover it. As a result, a buffer is provided at the fillet 10 where the second FPC body 4 and the connecting portion 5 are connected, so that the stress point at this position can be dispersed, thereby preventing the connecting portion 5 from being broken when being bent, thereby greatly reducing the risk of being torn, improving the overall reliability, and extending the service life.
[0048] 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.
[0049] 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 convenient plug-in FPC structure, characterized in that: It includes: A display module (1) and an FPC connection module (2), wherein the FPC connection module (2) is connected to the display module (1), and the FPC connection module (2) comprises a first FPC body (3), a second FPC body (4), a connection portion (5), and a connection head (6) which are connected in sequence, wherein the second FPC body (4) is provided with a long groove (7), and the connection portion (5) is fixedly connected to the right inner wall of the long groove (7).
2. The convenient plug-in FPC structure according to claim 1, characterized in that: The connecting portion (5) and the connecting head (6) are both located inside the long groove (7); the second FPC body (4), the connecting portion (5) and the connecting head (6) are overall in a rectangular structure.
3. The convenient plug-in FPC structure according to claim 2, characterized in that: A first gap (8) is left between the front and rear sides of the connecting portion (5) and the inner wall of the long groove (7), a second gap (9) is left between the left side of the connecting head (6) and the inner wall of the long groove (7), and the right inner wall of the long groove (7) and the connecting portion (5) are transitionally connected via a rounded corner (10).
4. The convenient plug-in FPC structure according to claim 1, characterized in that: The first FPC body (3), the second FPC body (4) and the connecting portion (5) are integrally formed.
5. The convenient plug-in FPC structure according to claim 1, characterized in that: The first FPC body (3) is provided with a plurality of through holes (301), and the through holes (301) are circular or elliptical structures.
6. The convenient plug-in FPC structure according to claim 3, characterized in that: The first FPC body (3), the second FPC body (4) and the connecting portion (5) all comprise a base layer (11), two copper foil layers (12) and two covering layers (13); the base layer (11) is located between the two copper foil layers (12), and the copper foil layer (12) is located between the base layer (11) and the covering layer (13).
7. The convenient plug-in FPC structure according to claim 6, characterized in that: The base layer (11) and the cover layer (13) at the rounded corner (10) extend outwards and form an extended edge (14).
8. The convenient plug-in FPC structure according to claim 7, characterized in that: The width of the extended edge (14) is 0.8-1.5 mm.