Flexible circuit board interconnect structure and electronic devices

Abstract

This application provides a flexible circuit board (PCB) insertion structure and an electronic device. The PCB insertion structure includes a connector and a flexible circuit board. The connector includes a first contact structure and a second contact structure adjacent to each other in a first direction. The first contact structure includes at least one first contact arranged along a second direction, and the second contact structure includes a plurality of second contacts arranged along the second direction, which is different from the first direction. The second contacts and the first contacts are staggered along the second direction, and the number of second contacts is greater than the number of first contacts. The flexible circuit board includes a first terminal structure and a second terminal structure adjacent to each other in the first direction. The first terminal structure is connected to the first contact in the first contact structure, and the second terminal structure is connected to the second contact in the second contact structure. This reduces the possibility of short circuits between adjacent signals due to oblique insertion when the flexible circuit board is inserted into the connector, thereby reducing the risk of burn-in of the flexible circuit board.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a flexible circuit board insertion structure and electronic device. Background Technology

[0002] In the display panel industry, zero insertion force (ZIF) connectors are often used on flexible printed circuits (FPCs). During the manual insertion of FPCs, especially during production testing, ZIF connectors require frequent insertion and removal actions, which inevitably leads to some misalignment. Misalignment can cause short circuits between adjacent signals, burning out the FPC.

[0003] Therefore, some special design is needed for the contacts of the ZIF connector to solve this problem. Utility Model Content

[0004] The purpose of this application is to provide a flexible circuit board insertion structure and electronic device, which aims to reduce the short circuit of adjacent signals caused by oblique insertion, thereby reducing the burning phenomenon of flexible circuit boards.

[0005] This application provides a flexible circuit board insertion structure, including: a connector, comprising a first contact structure and a second contact structure disposed adjacent to each other in a first direction, the first contact structure including at least one first contact arranged along a second direction, the second contact structure including a plurality of second contacts arranged along the second direction, the second direction being different from the first direction; the second contacts and the first contacts are staggered along the second direction, and the number of second contacts is greater than the number of first contacts; and a flexible circuit board, comprising a first terminal structure and a second terminal structure disposed adjacent to each other in the first direction, the first terminal structure being connected to the first contact in the first contact structure, and the second terminal structure being connected to the second contact in the second contact structure.

[0006] In some embodiments, the first terminal structure includes at least one first terminal arranged along the second direction, the at least one first terminal being connected to the at least one first contact in a one-to-one correspondence; the second terminal structure includes a plurality of second terminals arranged along the second direction, the plurality of second terminals being connected to the plurality of second contacts in a one-to-one correspondence.

[0007] In some embodiments, the second terminal and the first terminal are staggered along the second direction, and the number of the second terminal is greater than the number of the first terminal.

[0008] In some embodiments, the length of each first terminal along the second direction is greater than the length of each second terminal along the second direction.

[0009] In some embodiments, the second terminal and the first terminal have no overlap or partially overlap in the first direction.

[0010] In some embodiments, the second contact and the first contact have a non-overlapping portion or a partial overlap in the first direction.

[0011] In some embodiments, the flexible circuit board further includes a first conductor and a second conductor disposed on the same layer, wherein the first conductor is connected to the first terminal in the first terminal structure, and the second conductor is connected to a plurality of second terminals in the second terminal structure.

[0012] In some embodiments, the number of second contacts in a second contact structure is one more than the number of first contacts in a first contact structure.

[0013] In some embodiments, the plate and the limiting structure are arranged along the first direction, the limiting structure is located on opposite sides of the plate, and the plate connects two adjacent limiting structures.

[0014] This application also provides an electronic device, including: a flexible circuit board insertion structure as described in any of the above embodiments; a printed circuit board, wherein the connection end of the printed circuit board is connected to the connector.

[0015] In the flexible circuit board insertion structure provided in this application embodiment, the number of first contacts in the first contact structure is different from the number of second contacts in the second contact structure, and the second contacts and the first contacts are staggered in the second direction. Therefore, the first contacts and the second contacts do not overlap at least partially in the first direction. In this way, when the flexible circuit board is inserted into the connector, the probability of the first terminal structure corresponding to the first contact contacting the second contact can be reduced, thereby reducing the short circuit of adjacent signals caused by oblique insertion and reducing the burning phenomenon of the flexible circuit board. Attached Figure Description

[0016] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the flexible circuit board insertion structure provided in some embodiments of this application;

[0018] Figure 2 yes Figure 1Diagram showing the connection state between the first terminal structure and the second terminal structure and the first contact structure and the second contact structure;

[0019] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the flexible circuit board at point A-A1;

[0020] Figure 4 yes Figure 2 A cross-sectional view of the flexible circuit board at point B-B1.

[0021] Figure 5 This is a schematic diagram of the structure of an electronic device provided in some embodiments of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] This article uses a Cartesian coordinate system to represent the orientation of the structure in the figure, where X represents the first direction, Y represents the second direction, and Z represents the third direction, namely the thickness direction of the flexible circuit board.

[0027] In one embodiment, one or more first contacts are provided in the first contact structure, and one or more second contacts are provided in the second contact structure. The number of first and second contacts is the same, and the first and second contacts are aligned (i.e., not staggered). Thus, when the flexible circuit board is inserted into the connector, if misalignment occurs, the same contact may connect to two adjacent terminals on the flexible circuit board, or the same terminal may connect to two adjacent contacts on the connector, resulting in a short circuit between adjacent signals and potentially burning out the flexible circuit board.

[0028] Based on this, embodiments of this application provide a flexible circuit board insertion structure, including: a connector, comprising a first contact structure and a second contact structure disposed adjacent to each other in a first direction, the first contact structure including at least one first contact arranged along a second direction, the second contact structure including a plurality of second contacts arranged along the second direction, the second direction being different from the first direction; the second contacts and the first contacts being staggered along the second direction, and the number of second contacts being greater than the number of first contacts; and a flexible circuit board, comprising a first terminal structure and a second terminal structure disposed adjacent to each other in the first direction, the first terminal structure being connected to the first contact in the first contact structure, and the second terminal structure being connected to the second contact in the second contact structure.

[0029] In the flexible circuit board insertion structure provided in this application embodiment, the number of first contacts in the first contact structure is different from the number of second contacts in the second contact structure, and the second contacts and the first contacts are staggered in the second direction. Therefore, the first contacts and the second contacts do not overlap at least partially in the first direction. In this way, when the flexible circuit board is inserted into the connector, the probability of the first terminal structure corresponding to the first contact contacting the second contact can be reduced, thereby reducing the short circuit of adjacent signals caused by oblique insertion and reducing the burning phenomenon of the flexible circuit board.

[0030] The flexible circuit board insertion structure provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0031] Please see Figure 1 and Figure 2 , Figure 1 This is a cross-sectional structural diagram of the flexible circuit board insertion structure provided in some embodiments of this application. Please refer to it. Figure 2 , Figure 2 yes Figure 1 Diagram showing the connection status of the first terminal structure and the second terminal structure with the first contact structure and the second contact structure.

[0032] The flexible circuit board insertion structure 100 includes a connector 10 and a flexible circuit board 20. The connector 10 includes a first contact structure 11 and a second contact structure 12 arranged adjacent to each other in a first direction X. The first contact structure 11 includes at least one first contact 111 arranged along a second direction Y, and the second contact structure 12 includes a plurality of second contacts 121 arranged along the second direction Y, which is different from the first direction X. The second contacts 121 and the first contacts 111 are staggered along the second direction Y, and the number of second contacts 121 is greater than the number of first contacts 111. The flexible circuit board 20 includes a first terminal structure 21 and a second terminal structure 22 arranged adjacent to each other in the first direction X. The first terminal structure 21 is connected to the first contact 111 in the first contact structure 11, and the second terminal structure 22 is connected to the second contact 121 in the second contact structure 12.

[0033] The first direction X can be the arrangement direction of multiple contact structures (including first contact structure 11 and second contact structure 12) and multiple terminal structures (including first terminal structure 21 and second terminal structure 22). Specifically, the first contact structure 11 and second contact structure 12 can be arranged alternately in the first direction X, and the first terminal structure 21 and second terminal structure 22 can also be arranged alternately in the first direction X. One terminal structure and one contact structure are connected to form a signal channel, and multiple signal channels are also arranged at intervals along the first direction X. For example, "alternating arrangement" means that along the first direction X from left to right (as shown in the diagram), the first column is the second contact structure 12 and the second terminal structure 22, the second column is the first contact structure 11 and the first terminal structure 21, the third column is the second contact structure 12 and the second terminal structure 22, the fourth column is the first contact structure 11 and the first terminal structure 21, and so on.

[0034] The second direction Y can be the insertion direction of the connector 10 and the flexible circuit board 20, that is, the flexible circuit board 20 can be inserted into the connector 10 along the second direction Y. It can be understood that the second direction Y is also the signal transmission direction of the signal channel.

[0035] The second contact 121 and the first contact 111 are staggered in the second direction Y, which reduces the probability that the same terminal of the flexible circuit board 20 will simultaneously contact two adjacent contacts (i.e., adjacent first contacts 111 and second contacts 121) during the insertion process, thereby reducing short circuits between adjacent signals. The number of second contacts 121 is different from the number of first contacts 111, and the number of second contacts 121 is greater than the number of first contacts 111. This can reduce short circuits while increasing the probability of the second contact structure 12 being conductive, and prevent the signal channel from being disconnected if one of the second contacts 121 is not conductive.

[0036] The second contact 121 and the first contact 111 are staggered in the second direction Y, which can mean that the second contact 121 and the first contact 111 have no overlapping portion or partially overlap in the first direction X. For example... Figure 2 As shown, in some embodiments, the second contact 121 and the first contact 111 have no overlap in the first direction X, which can further reduce short circuits.

[0037] The connector 10 may also include a fastener 13, which forms a fastening space 14 between the fastener 13 and the first contact structure 11 and the second contact structure 12. The fastening space 14 is the space in which the flexible circuit board 20 is inserted.

[0038] The fastener 13 can rotate relative to the central axis 131. When the fastener 13 rotates to a fixed position, it can contact the flexible circuit board 20, and the position of the flexible circuit board 20 can be fixed. When the position of the flexible circuit board 20 is fixed, the first terminal structure 21 and the second terminal structure 22 of the flexible circuit board 20 contact the first contact structure 11 and the second contact structure 12 of the connector 10, respectively.

[0039] Reference Figure 1 The connector 10 may also include multiple pins 15, which are connected to the first contact structure 11 and the second contact structure 12 inside the connector 10, and to the printed circuit board outside the connector 10. Thus, the first contact structure 11 and the second contact structure 12 are connected to the printed circuit board through their respective pins 15, thereby realizing the electrical connection between the flexible circuit board 20 and the printed circuit board.

[0040] See Figure 2 The first terminal structure 21 includes at least one first terminal 211 arranged along the second direction Y, and the at least one first terminal 211 is connected to the at least one first contact 111 in a one-to-one correspondence. The second terminal structure 22 includes a plurality of second terminals 221 arranged along the second direction Y, and the plurality of second terminals 221 are connected to the plurality of second contacts 121 in a one-to-one correspondence.

[0041] It is understood that "one-to-one connection" means that the number of first terminals 211 is the same as the number of first contacts 111, and the first terminals 211 are connected to the first contacts 111 one-to-one; the number of second terminals 221 is the same as the number of second contacts 121, and the second terminals 221 are connected to the second contacts 121 one-to-one. In other words, the terminal structures on the flexible circuit board 20 correspond to the contact structures on the connector 10. Compared to the case where each terminal structure has only one terminal, the improved terminal structure in this embodiment can improve the stability of the connection between the terminals and contacts.

[0042] In some embodiments, the area of ​​the first contact 111 is smaller than the area of ​​the first terminal 211, and the orthographic projection of the first contact 111 onto the first terminal 211 is within the area of ​​the first terminal 211. The area of ​​the second contact 121 is smaller than the area of ​​the second terminal 221, and the orthographic projection of the second contact 121 onto the second terminal 221 is within the area of ​​the second terminal 221. Here, "area" refers to the area viewed from above.

[0043] In some embodiments, the second terminal 221 and the first terminal 211 are staggered along the second direction Y, and the number of the second terminal 221 is greater than the number of the first terminal 211. The staggered arrangement of the second terminal 221 and the first terminal 211 in the second direction Y can ensure a one-to-one connection between the terminal and the contact, further reducing short circuits.

[0044] Reference Figure 2 In some embodiments, the length L1 of the plurality of first terminals 211 along the second direction Y can be the same, and the length L2 of the plurality of second terminals 221 along the second direction Y can be the same. The length L1 of each first terminal 211 along the second direction Y is greater than the length L2 of each second terminal 221 along the second direction Y. Since the number of second terminals 221 is greater than the number of first terminals 211, setting the length of the second terminals 221 to be larger to increase the area of ​​the second terminals 221 can improve the stability of the connection between the second contact 121 and the second terminal 221.

[0045] Correspondingly, the length L3 of the first contact 111 along the second direction Y can be greater than the length L4 of the second contact 121 along the second direction Y, so that the area of ​​a single first contact 111 is greater than the area of ​​a single second contact 121, thereby increasing the contact area between the first contact 111 and the first terminal 211 to improve conductivity.

[0046] In some embodiments, the second terminal 221 and the first terminal 211 have a non-overlapping portion or a partial overlap in the first direction X.

[0047] exist Figure 2 In this embodiment, the second terminal 221 and the first terminal 211 have no overlapping portion in the first direction X to further reduce short circuits. In other words, each second terminal 221 is located in the region between two adjacent first terminals 211 along the second direction Y. That is, the second terminal 221 and the first terminal 211 are completely offset in the second direction Y to reduce the occurrence of short circuits between adjacent signals.

[0048] like Figure 2 As shown, the first terminal 211 has a first end 211a near the second terminal 221, and the second terminal 221 has a second end 221a near the first terminal 211. Both first ends 211a are located in the region between two adjacent second ends 221a in the second direction Y.

[0049] In some embodiments, the first terminal 211 and the second terminal 221 are spaced apart by a specific distance D in the second direction Y. Specifically, in the second direction Y, the first end 211a may be spaced apart from both second ends 221a on either side by a specific distance D, thereby further reducing the phenomenon of short circuits between adjacent signals. The specific distance D is greater than or equal to 0. When the specific distance D is equal to 0, one first end 211a of the first terminal 211 is just aligned with one second end 221a of the second terminal 221; when the specific distance D is greater than 0, there is a gap between one first end 211a of the first terminal 211 and one second end 221a of the second terminal 221 in the second direction Y.

[0050] In some embodiments, the number of second contacts 121 in a second contact structure 12 is one more than the number of first contacts 111 in a first contact structure 11, for example, two second contacts 121 and one first contact 111. Correspondingly, the number of second terminals 221 in a second terminal structure 22 is one more than the number of first terminals 211 in a first terminal structure 21, for example, two second terminals 221 and one first terminal 211. This allows for full utilization of the terminal structure area on the flexible circuit board 20 while reducing short circuits, thus increasing the total terminal area. If the number of first terminals 211 or second terminals 221 in a terminal structure is too large, the total terminal area will be reduced.

[0051] Reference Figure 2 The flexible circuit board 20 may further include a plate body 23 and a limiting structure 24. The first terminal structure 21 and the second terminal structure 22 are disposed on the plate body 23. The plate body 23 and the limiting structure 24 are arranged along a first direction X. The limiting structure 24 is located on opposite sides of the plate body 23, and the plate body 23 connects two adjacent limiting structures 24. Correspondingly, the connector 10 may include a fixing structure that engages with the limiting structure 24. When the flexible circuit board 20 is inserted into the connector 10, the limiting structure 24 of the flexible circuit board 20 engages and is fixed with the fixing structure, thereby preventing the flexible circuit board 20 from falling off the connector 10.

[0052] In some embodiments, the limiting structure 24 may include a protrusion structure, and the fixing structure may include a groove.

[0053] Please see Figure 3 and Figure 4 , Figure 3 yes Figure 2 A cross-sectional view of the flexible circuit board at point A-A1. Figure 4 yes Figure 2 A cross-sectional view of the flexible circuit board at point B-B1.

[0054] The flexible circuit board 20 may further include a first conductor 25 and a second conductor 26 disposed on the same layer. The first conductor 25 is connected to the first terminal 211 in the first terminal structure 21, and the second conductor 26 is connected to a plurality of second terminals 221 in the second terminal structure 22. Since the first terminal structure 21 and the second terminal structure 22 are arranged at intervals in the first direction X, the first conductor 25 and the second conductor 26 are also arranged at intervals in the first direction X to enable individual signal transmission for different signal channels.

[0055] like Figure 4 As shown, the first conductor 25 may include a first lead segment 251 and a first contact segment 252 connected to each other. The first lead segment 251 extends in a second direction Y, and the first contact segment 252 extends in a third direction Z. Figure 3 As shown, the second conductor 26 may include a second lead segment 261 and a second contact segment 262 connected to each other. The second lead segment 261 extends in the second direction Y, and the second contact segment 262 extends in the third direction Z.

[0056] Since a second terminal structure 22 has multiple second terminals 221, the second wire 26 may include multiple second contact segments 262, and the multiple second contact segments 262 are respectively connected to the multiple second terminals 221 one by one.

[0057] This application also provides an electronic device; please refer to [link / reference]. Figure 5 , Figure 5 This is a schematic diagram of the structure of an electronic device provided in some embodiments of this application.

[0058] The electronic device 200 includes a flexible circuit board insertion structure 100 and a printed circuit board 101. The flexible circuit board insertion structure 100 includes a flexible circuit board 20 and a connector 10. The connection end 101a of the printed circuit board 101 is connected to the connector 10, so that the flexible circuit board 20 is electrically connected to the printed circuit board 101 through the connector 10. The flexible circuit board insertion structure 100 is the flexible circuit board insertion structure in any of the above embodiments, and the electronic device 200 has the same beneficial effects as the flexible circuit board insertion structure in any of the above embodiments, which will not be described again here.

[0059] In some embodiments, the connection terminal 101a of the printed circuit board 101 may be located on its upper surface or in other locations, and this application does not limit this.

[0060] The above description of the embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application; those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A flexible circuit board connector structure, characterized by comprising: include: A connector includes a first contact structure and a second contact structure arranged adjacent to each other in a first direction. The first contact structure includes at least one first contact arranged along a second direction, and the second contact structure includes a plurality of second contacts arranged along the second direction, the second direction being different from the first direction. The second contacts and the first contacts are staggered along the second direction, and the number of second contacts is greater than the number of first contacts. A flexible circuit board includes a first terminal structure and a second terminal structure disposed adjacent to each other in the first direction, wherein the first terminal structure is connected to a first contact in the first contact structure, and the second terminal structure is connected to a second contact in the second contact structure.

2. The flexible circuit board connector structure according to claim 1, wherein The first terminal structure includes at least one first terminal arranged along the second direction, and the at least one first terminal is connected to the at least one first contact in a one-to-one correspondence. The second terminal structure includes a plurality of second terminals arranged along the second direction, and the plurality of second terminals are connected to the plurality of second contacts in a one-to-one correspondence.

3. The flexible circuit board connector structure of claim 2, wherein, The second terminal and the first terminal are staggered along the second direction, and the number of the second terminal is greater than the number of the first terminal.

4. The flexible circuit board connector structure according to claim 3, wherein The length of each of the first terminals along the second direction is greater than the length of each of the second terminals along the second direction.

5. The flexible circuit board jack structure according to claim 3, wherein The second terminal and the first terminal have no overlapping portion or partially overlap in the first direction.

6. The flexible circuit board jack structure of claim 1, wherein, The second contact point and the first contact point have no overlapping portion or partially overlap in the first direction.

7. The flexible circuit board jack structure according to claim 2, wherein The flexible circuit board also includes a first conductor and a second conductor arranged on the same layer. The first conductor is connected to the first terminal in the first terminal structure, and the second conductor is connected to a plurality of second terminals in the second terminal structure.

8. The flexible circuit board insertion structure according to any one of claims 1 to 7, characterized in that, The number of second contacts in a second contact structure is one more than the number of first contacts in a first contact structure.

9. The flexible circuit board connector structure according to any one of claims 1 to 7, wherein The flexible circuit board also includes: The plate body, the first terminal structure and the second terminal structure are disposed on the plate body; A limiting structure is provided, wherein the plate and the limiting structure are arranged along the first direction, the limiting structure is located on opposite sides of the plate, and the plate connects two adjacent limiting structures.

10. An electronic device, comprising: include: The flexible circuit board insertion structure as described in any one of claims 1 to 9; A printed circuit board, wherein the connection end of the printed circuit board is connected to the connector.

Images