FPC electrostatic discharge structure

Abstract

The embodiment of the utility model belongs to the technical field of FPCs (Flexible Printed Circuit). The utility model also relates to an FPC electrostatic discharge structure, which comprises a connector main body and an FPC main body detachably connected with the connector main body, a plurality of first grounding pins are arranged in the connector main body, and one side, close to the first grounding pins, of the FPC main body is connected with a metal layer in contact with the first grounding pins. And the metal layer and the first grounding pin are matched for releasing static electricity of the FPC main body to the ground. The first grounding pin is arranged on the connector main body, the metal layer is arranged on the FPC main body so as to be connected to the host ground, the metal layer is in contact with the first grounding pin after the connector main body and the FPC main body are plugged, static electricity of the FPC main body can be released to the ground, the common ground area of a host and a display module is greatly increased, and the antistatic performance is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors and FPCs, and more specifically to an FPC electrostatic discharge structure. Background Art

[0002] In traditional display technology, the flexible printed circuit board (FPC) and the connector are usually connected to the host and the display module by means of gold finger plugging. The gold finger is a row of metal contact pieces on the connector that are used to transmit signals and currents. In most designs, the pin at the end is used as a ground wire to provide a stable electrical connection. However, there is a significant problem with this connection method: the contact surface of the gold finger is relatively small, resulting in poor grounding effect. In the case of electrical interference such as electrostatic discharge (ESD), this lack of contact surface will seriously affect the stability of the connection and increase the risk of electrical failure. Therefore, we have made improvements to this and proposed an FPC electrostatic discharge structure.

[0003] For example, a Chinese patent (publication number CN218886347U) discloses a display module and electronic equipment, and its specification discloses: With the development of science and technology, electronic information technology has penetrated into all aspects of life. With the development of electronic information technology, touch display modules have been widely used in smart phones, tablets, wearables, medical industrial control and other fields that require display. At present, display modules often use on-cell technology to attach the touch FPC to the glass of the liquid crystal panel, and use connectors to overlap the touch FPC and the display FPC in the liquid crystal panel. The connector is very easy to loosen after being vibrated, affecting the realization of the touch function. At the same time, the touch FPC and the display FPC are only connected by a grounding PIN pin, and the anti-static ability is not strong, which is prone to poor touch. The above patents can prove the defects of the existing technology. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present invention is that the pin at the end is used as a grounding wire, which has a poor grounding effect. In the case of electrical interference such as electrostatic discharge, it will seriously affect the stability of the connection and increase the risk of electrical failure.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An FPC electrostatic discharge structure comprises: a connector body and an FPC body detachably connected to the connector body, wherein a plurality of first grounding pins are arranged in the connector body, and a metal layer in contact with the first grounding pin is connected to one side of the FPC body close to the first grounding pin, and the metal layer and the first grounding pin cooperate to release the static electricity of the FPC body to the ground.

[0007] As an improvement of the present invention, a plurality of connector pins are further provided in the connector body, the FPC body has a plurality of FPC pins, and the FPC pins are in contact with the connector pins. The present application provides a first grounding pin on the connector body, and a metal layer on the FPC body to be connected to the host ground. After the connector body and the FPC body are plugged in, the metal layer contacts the first grounding pin, which can release the static electricity of the FPC body to the ground, greatly increase the common ground area of ​​the host and the display module, and enhance the anti-static performance.

[0008] As an improved manner of the utility model, two metal sheets are fixedly mounted on the FPC body, and limiting holes are provided on the two metal sheets.

[0009] As an improvement of the present invention, two fixing mechanisms are further provided on the connector body, and the fixing mechanisms cooperate with the limiting holes and the metal sheets to achieve the reinforcement of the FPC body and the release of static electricity.

[0010] As an improvement of the utility model, the fixing mechanism includes a slide groove opened on the side wall of the connector body, a limiting column is fixedly installed in the slide groove, a connecting plate is sleeved on the outer surface of the limiting column, a pressure block located on the inner side of the connector body is fixedly installed on one side of the connecting plate, and the bottom of the pressure block is in contact with the metal sheet.

[0011] As an improved manner of the utility model, a limiting rod is fixedly installed on the bottom of the pressing block, and the outer surface of the limiting rod is plugged into the limiting hole.

[0012] As an improved manner of the utility model, the outer surface of the limit column is sleeved with a spring located in the slide groove, and the two ends of the spring are respectively fixedly connected to the slide groove and the connecting plate.

[0013] As an improved manner of the utility model, a connecting shaft located above the connector body is fixedly mounted on the side of the pressing block, a cam is provided on the outer surface of the connecting shaft via a bearing sleeve, and a shifting rod is fixedly mounted on the cam.

[0014] As an improved manner of the present invention, a second grounding pin is fixedly mounted on the side surface of the connector body, and an outer surface of the second grounding pin is slidably connected to the connecting plate.

[0015] As an improved manner of the utility model, a groove is provided on one side of the connecting plate close to the second grounding pin, and the inner wall of the groove is slidably connected to the outer surface of the second grounding pin.

[0016] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0017] In order to solve the problem that the prior art uses the middle-end pin as a grounding wire, which has poor grounding effect and seriously affects the stability of the connection under electrical interference such as electrostatic discharge, increasing the risk of electrical failure, the present application sets a first grounding pin on the connector body and a metal layer on the FPC body to connect to the host ground. After the connector body and the FPC body are plugged in, the metal layer contacts the first grounding pin, which can release the static electricity of the FPC body to the ground, greatly increasing the common ground area of ​​the host and the display module and enhancing the anti-static performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the FPC electrostatic discharge structure provided in this application;

[0019] Figure 2 A schematic structural diagram of a first ground pin of the FPC electrostatic discharge structure provided in the present application;

[0020] Figure 3 A structural schematic diagram of the FPC main body of the FPC electrostatic discharge structure provided in this application;

[0021] Figure 4 A schematic diagram of the structure of the FPC electrostatic discharge structure provided in this application;

[0022] Figure 5 A schematic diagram of the structure of the limiting hole of the FPC electrostatic discharge structure provided in this application;

[0023] Figure 6 The FPC electrostatic discharge structure provided in this application Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 7 This is a schematic cross-sectional structural diagram of the connector body of the FPC electrostatic discharge structure provided in this application.

[0025] Indicated in the figure:

[0026] 1. Connector body; 101. Connector pin; 2. FPC body; 201. FPC pin; 3. Metal layer; 4. First ground pin; 5. Metal sheet; 501. Limit hole; 6. Fixing mechanism; 601. Slide groove; 602. Limit column; 603. Connecting plate; 604. Press block; 605. Limit rod; 606. Connecting shaft; 607. Cam; 608. Lever; 609. Second ground pin. DETAILED DESCRIPTION

[0027] 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.

[0028] As described in the background technology, in traditional display technology, the flexible printed circuit board and the connector are usually connected to the host and the display module by means of gold finger plugging. The gold finger is a row of metal contact pieces on the connector for transmitting signals and currents. In most designs, the pin at the end is used as a ground wire to provide a stable electrical connection. However, there is a significant problem with this connection method: the contact surface of the gold finger is relatively small, resulting in poor grounding effect. In the case of electrical interference such as electrostatic discharge, this lack of contact surface will seriously affect the stability of the connection and increase the risk of electrical failure.

[0029] In order to solve this technical problem, the utility model provides an FPC electrostatic discharge structure.

[0030] Specifically, please refer to Figure 1-Figure 3 , the FPC electrostatic discharge structure specifically includes:

[0031] A connector body 1 and an FPC body 2 detachably connected to the connector body 1, a plurality of first grounding pins 4 are arranged in the connector body 1, and a metal layer 3 in contact with the first grounding pin 4 is connected to one side of the FPC body 2 close to the first grounding pin 4, and the metal layer 3 and the first grounding pin 4 are used together to release static electricity of the FPC body 2 to the ground.

[0032] The FPC electrostatic discharge structure provided by the utility model provides a first grounding pin 4 on the connector body 1, and provides a metal layer 3 on the FPC body 2 to be connected to the host ground. After the connector body 1 and the FPC body 2 are plugged in, the metal layer 3 and the first grounding pin 4 are in contact, and the static electricity of the FPC body 2 can be released to the ground, which greatly increases the common ground area of ​​the host and the display module and enhances the anti-static performance.

[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] Embodiment 1 of the FPC electrostatic discharge structure of the utility model

[0037] Please refer to Figure 1-Figure 3 The FPC electrostatic discharge structure of the utility model comprises: a connector body 1 and an FPC body 2 detachably connected to the connector body 1, a plurality of first ground pins 4 are arranged in the connector body 1, and a metal layer 3 in contact with the first ground pin 4 is connected to a side of the FPC body 2 close to the first ground pin 4, the metal layer 3 and the first ground pin 4 cooperate to release the static electricity of the FPC body 2 to the ground, by arranging the first ground pin 4 on the connector body 1, and arranging the metal layer 3 on the FPC body 2 to connect to the host ground, after the connector body 1 and the FPC body 2 are plugged in, the metal layer 3 and the first ground pin 4 are in contact, which can release the static electricity of the FPC body 2 to the ground, greatly increasing the common ground area of ​​the host and the display module, and enhancing the antistatic performance, and the metal layer 3 is made of tinned copper foil;

[0038] Tin plating of copper foil is an important surface treatment process, which mainly involves plating a thin layer of metallic tin on the surface of copper and copper alloys to increase their corrosion resistance and improve processability. Tin-plated copper foil is usually composed of copper and tin, of which copper is the main component, accounting for about 95%, and tin is the auxiliary component, accounting for about 5%. This combination gives tin-plated copper foil excellent corrosion resistance, welding and forming properties.

[0039] Further, such as Figure 1-Figure 3 As shown, a plurality of connector pins 101 are also arranged in the connector body 1, and the FPC body 2 has a plurality of FPC pins 201, and the FPC pins 201 are in contact with the connector pins 101;

[0040] After the FPC body 2 is plugged into the connector body 1 , the FPC pins 201 are in contact with the connector pins 101 , ensuring the normal operation of the electronic device and the stable transmission of signals, allowing the current to flow, thereby achieving the predetermined function of the circuit.

[0041] When in use, the FPC body 2 is inserted into the connector body 1 , at which time the FPC pin 201 contacts the connector pin 101 , and the metal layer 3 contacts the first ground pin 4 , and static electricity can be grounded and released through the metal layer 3 and the first ground pin 4 .

[0042] Embodiment 2 of the FPC electrostatic discharge structure of the utility model

[0043] like Figure 4-Figure 6 As shown, two metal sheets 5 are fixedly installed on the FPC body 2, and limiting holes 501 are provided on the two metal sheets 5. The metal sheets 5 and the metal layer 3 are made of the same material. The set metal sheets 5 can also reinforce the edges of the FPC body 2.

[0044] Embodiment 3 of the FPC electrostatic discharge structure of the utility model

[0045] like Figure 4 , Figure 6 and Figure 7 As shown, two fixing mechanisms 6 are further provided on the connector body 1, and the fixing mechanisms 6 cooperate with the limiting holes 501 and the metal sheet 5 to achieve the reinforcement of the FPC body 2 and the release of static electricity, that is, the pressing of the metal sheet 5 by the fixing mechanisms 6 can reinforce the connection between the FPC body 2 and the connector body 1, thereby reducing the situation where the FPC body 2 is mistakenly pulled by external forces and separated from the connector body 1, and the metal sheet 5 and the fixing mechanisms 6 are also grounded, so as to further improve the static electricity release of the FPC body 2.

[0046] Further, such as Figure 7 As shown, the fixing mechanism 6 includes a slide groove 601 opened on the side wall of the connector body 1, a limiting column 602 is fixedly installed in the slide groove 601, a connecting plate 603 is sleeved on the outer surface of the limiting column 602, and a pressure block 604 located on the inner side of the connector body 1 is fixedly installed on one side of the connecting plate 603. The bottom of the pressure block 604 is in contact with the metal sheet 5. The connecting plate 603 can be limited by the setting of the limiting column 602, so that the up and down movement of the pressure block 604 is more stable.

[0047] Further, such as Figure 4-Figure 7 As shown, a limiting rod 605 is fixedly installed at the bottom of the pressing block 604, and the outer surface of the limiting rod 605 is plugged into the limiting hole 501. The plugging of the limiting rod 605 and the limiting hole 501 can realize the limiting fixation of the metal sheet 5, and then realize the limiting fixation of the FPC body 2.

[0048] Further, such as Figure 7 As shown, the outer surface of the limiting column 602 is sleeved with a spring located in the slide groove 601, and the two ends of the spring are fixedly connected to the slide groove 601 and the connecting plate 603 respectively. The action force of the spring can push the pressing block 604 through the connecting plate 603, so that the pressing block 604 can press the FPC body 2 and improve the stability of the connection between the limiting rod 605 and the limiting hole 501.

[0049] Further, such as Figure 5-Figure 7As shown, a connecting shaft 606 located above the connector body 1 is fixedly installed on the side of the pressing block 604, and a cam 607 is provided on the outer surface of the connecting shaft 606 through a bearing sleeve. A lever 608 is fixedly installed on the cam 607. When the lever 608 is pushed, the cam 607 can rotate around the connecting shaft 606. When the protruding part of the cam 607 contacts the connector body 1, it can push the pressing block 604 to rise, thereby separating the limiting rod 605 from the limiting hole 501.

[0050] Further, such as Figure 6 As shown, a second grounding pin 609 is fixedly installed on the side of the connector body 1, and the outer surface of the second grounding pin 609 is slidably connected to the connecting plate 603. The pressing block 604, the connecting plate 603 and the second grounding pin 609 are all made of conductive materials to achieve static electricity transfer.

[0051] Further, such as Figure 6 As shown, a groove is provided on one side of the connecting plate 603 close to the second grounding pin 609 , and the inner wall of the groove is slidably connected to the outer surface of the second grounding pin 609 . The setting of the groove can increase the contact area between the second grounding pin 609 and the connecting plate 603 .

[0052] When in use, the lever 608 is toggled to make the cam 607 rotate around the connecting shaft 606, and the protruding part of the cam 607 contacts the connector body 1, which can push the pressing block 604 to rise, thereby separating the limiting rod 605 from the limiting hole 501, and pulling the FPC body 2 can separate the FPC body 2 from the connector body 1. When installing, the FPC body 2 is inserted into the connector body 1 and the lever 608 is toggled in the opposite direction to make the cam 607 rotate around the connecting shaft 606, and the protruding part of the cam 607 separates from the connector body 1. The force of the spring pushes the pressing block 604 to reset through the connecting plate 603, so that the pressing block 604 presses the metal sheet 5, and the limiting rod 605 is plugged into the slide groove 601, and the static electricity can be grounded and released through the metal sheet 5, the pressing block 604, the connecting plate 603 and the second grounding pin 609, and the FPC pin 201 contacts the connector pin 101, and the metal layer 3 contacts the first grounding pin 4, and the static electricity can be grounded and released through the metal layer 3 and the first grounding pin 4.

[0053] 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. An FPC electrostatic discharge structure, characterized in that: include: A connector body (1) and an FPC body (2) detachably connected to the connector body (1), wherein a plurality of first ground pins (4) are arranged in the connector body (1), and a metal layer (3) in contact with the first ground pin (4) is connected to a side of the FPC body (2) close to the first ground pin (4), and the metal layer (3) and the first ground pin (4) cooperate to release static electricity of the FPC body (2) to the ground.

2. The FPC electrostatic discharge structure according to claim 1, characterized in that: A plurality of connector pins (101) are also arranged in the connector body (1), and the FPC body (2) has a plurality of FPC pins (201), and the FPC pins (201) are in contact with the connector pins (101).

3. The FPC electrostatic discharge structure according to claim 2, characterized in that: Two metal sheets (5) are fixedly mounted on the FPC body (2), and limiting holes (501) are provided on both of the two metal sheets (5).

4. The FPC electrostatic discharge structure according to claim 3, characterized in that: The connector body (1) is also provided with two fixing mechanisms (6), and the fixing mechanisms (6) cooperate with the limiting holes (501) and the metal sheet (5) to achieve reinforcement of the FPC body (2) and release of static electricity.

5. The FPC electrostatic discharge structure according to claim 4, characterized in that: The fixing mechanism (6) comprises a slide groove (601) provided on the side wall of the connector body (1), a limit column (602) being fixedly installed in the slide groove (601), a connecting plate (603) being sleeved on the outer surface of the limit column (602), a pressing block (604) located on the inner side of the connector body (1) being fixedly installed on one side of the connecting plate (603), and the bottom of the pressing block (604) being in contact with the metal sheet (5).

6. The FPC electrostatic discharge structure according to claim 5, characterized in that: A limiting rod (605) is fixedly mounted on the bottom of the pressing block (604), and an outer surface of the limiting rod (605) is plugged into the limiting hole (501).

7. The FPC electrostatic discharge structure according to claim 6, characterized in that: The outer surface of the limiting column (602) is sleeved with a spring located in the slide groove (601), and the two ends of the spring are respectively fixedly connected to the slide groove (601) and the connecting plate (603).

8. The FPC electrostatic discharge structure according to claim 7, characterized in that: A connecting shaft (606) located above the connector body (1) is fixedly mounted on the side of the pressing block (604); a cam (607) is provided on the outer surface of the connecting shaft (606) via a bearing sleeve; and a shifting rod (608) is fixedly mounted on the cam (607).

9. The FPC electrostatic discharge structure according to claim 8, characterized in that: A second grounding pin (609) is fixedly mounted on the side surface of the connector body (1), and the outer surface of the second grounding pin (609) is slidably connected to the connecting plate (603).

10. The FPC electrostatic discharge structure according to claim 9, characterized in that: A groove is provided on one side of the connection plate (603) close to the second ground pin (609), and the inner wall of the groove is slidably connected to the outer surface of the second ground pin (609).

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