CN220254743U

CN220254743U - Anti-tearing FPC and electronic equipment

Info

Publication number: CN220254743U
Application number: CN202321388174.0U
Authority: CN
Inventors: 陈少棉
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-12-26
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a tearing-proof FPC and electronic equipment, comprising: a connection location and a connection body; the connecting position is connected with the connecting main body; the width of the joint of the connecting position and the connecting main body is suddenly changed; protrusions are arranged at two ends of the connecting position, facing one side of the connecting main body; a groove is formed between the protrusion and the connecting main body; the groove is a U-shaped groove. According to the utility model, the protrusions are arranged at the two ends of the connecting position, which face one side of the connecting main body, so that the external force applied to the connecting position in the using process is reduced, the tearing is effectively prevented, and the service life of the product is prolonged.

Description

Anti-tearing FPC and electronic equipment

Technical Field

The utility model relates to an FPC, in particular to a tearing-proof FPC and electronic equipment.

Background

The FPC is also called as a flexible printed circuit board, is one of the most common components in an LCD module, is a printed circuit board made of flexible insulating base materials, mainly polyimide or polyester films, can be freely bent, rolled and folded, has the advantages of small volume, light weight, heat dissipation, weldability, easiness in assembly and connection, lower comprehensive cost and the like, has certain market advantages compared with a hard board, is applicable to the requirement of developing electronic products to high density, miniaturization and high reliability, and is widely applied to the fields or products such as aerospace, military, mobile communication, portable computers, computer peripherals, PDAs, digital cameras and the like. However, although the flexible circuit board has various advantages, the flexibility of the flexible circuit board itself also causes the defect of easy tearing, such as easy damage to the circuit board when the flexible circuit board is connected and fixed, and the flexible circuit board has the advantages of light weight, thin thickness and free bending and folding, so that the flexible circuit board is easy to tear in the production or transportation process, and the flexible circuit board needs to be fixed and can be protected. At present, the TOP layer and the BOTTOM layer of the flexible circuit board in the prior art only have contact pads and simple wires, no protective layer is arranged at positions other than the wiring and the pads, the flexible circuit board is not provided with the protective layer, the flexible circuit board is easy to tear, the flexible circuit board cannot be normally used after the flexible circuit board is torn, scrapping treatment is generally needed, and a large amount of circuit board materials are wasted.

For example, chinese patent No. 202222467173.7 discloses a tearing-proof backlight FPC, including backlight FPC structure, backlight FPC structure includes connecting portion and the main part of being connected with connecting portion, and the junction of connecting portion and main part is provided with tearing-proof portion, and tearing-proof includes first tearing-proof spare and second tearing-proof spare, and first tearing-proof spare and second tearing-proof spare set up respectively in the both sides at connecting portion and main part junction top. As a preferable technical scheme of the utility model, the connecting part is an FPC connecting end, the main body part is an FPC main body, and the FPC main body is connected with one side of the FPC connecting end. As a preferable technical scheme of the utility model, the first tearing-proof piece is a first tearing-proof line, and the first tearing-proof line is arranged on one side of a joint of the FPC connecting end and the FPC main body. As a preferable technical scheme of the utility model, the second tearing-proof piece is a second tearing-proof line, and the second tearing-proof line is arranged on the other side of the joint of the FPC connecting end and the FPC main body. As a preferable technical scheme of the utility model, the first anti-tearing line and the second anti-tearing line are arranged at the joint of the FPC connecting end and the FPC main body in an etching mode. According to the utility model, through the arranged anti-tearing part, the first anti-tearing piece and the second anti-tearing piece in the anti-tearing part can improve the strength of the joint of the connecting part and the main body part, and when the joint of the connecting part and the main body part is acted, the first anti-tearing piece and the second anti-tearing piece have a protection effect, can improve the strength of the joint of the connecting part and the main body part, protect the internal circuit of the joint of the connecting part and the main body part, reduce the circuit breaking condition, and thus achieve the anti-tearing effect

However, the first anti-tearing piece and the second anti-tearing piece are arranged inside the FPC, the bent angle at the turning part of the FPC is still untreated, and when the corner is stressed and bent, the stress concentration causes the tearing of the FPC, so that the service life of the product is reduced.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the anti-tearing FPC, and the protrusions are arranged at the two ends of one side of the connecting position, which faces the connecting main body, so that the external force applied to the connecting position in the using process is reduced, the tearing is effectively prevented, and the service life of a product is prolonged.

The technical problems to be solved by the utility model are realized by the following technical scheme:

a tear resistant FPC comprising: a connection location and a connection body; the connecting position is connected with the connecting main body; the width of the joint of the connecting position and the connecting main body is suddenly changed; protrusions are arranged at two ends of the connecting position, facing one side of the connecting main body; a groove is formed between the protrusion and the connecting main body; the groove is a U-shaped groove.

Further, the bottom edge and the two side edges of the groove are connected in an arc mode.

Further, the connection position is in welded connection with the main board.

Further, the connection position is connected with the main board through hot-press welding.

Further, the connecting position is provided with a golden finger at the connecting position of the bottom edges of the connecting positions.

Further, the gold finger is formed by exposing the inner copper foil of the connecting position.

Further, the golden fingers are long-strip-shaped, and the golden fingers are distributed at intervals on the bottom edge of the connecting position.

Further, the golden finger protrudes out of the bottom edge of the connecting position.

Further, a first length is arranged from the bottom edge of the groove to the bottom edge of the connecting position, and a safe distance is reserved between the bottom edge of the groove and the connecting position line due to the first length.

An electronic device comprising an adapter plate and the anti-tearing FPC as described above, wherein the connection position of the anti-tearing FPC is connected with the adapter plate.

The utility model has the following beneficial effects: a tear resistant FPC comprising: a connection location and a connection body; the connecting position is connected with the connecting main body; the width of the joint of the connecting position and the connecting main body is suddenly changed; protrusions are arranged at two ends of the connecting position, facing one side of the connecting main body; a groove is formed between the protrusion and the connecting main body; the groove is a U-shaped groove. According to the utility model, the protrusions are arranged at the two ends of the connecting position, which face one side of the connecting main body, so that the external force applied to the connecting position in the using process is reduced, the tearing is effectively prevented, and the service life of the product is prolonged.

Drawings

For a clearer description of the solution in the present application, a brief description will be given below of the drawings that are needed in the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a tear-proof FPC provided by the present utility model;

FIG. 2 is a schematic view of a protrusion and groove structure provided by the present utility model;

fig. 3 is a schematic diagram of a bottom edge structure of a groove provided by the utility model.

1. A connecting body; 2. a connection site; 21. a golden finger; 22. a protrusion; 23. a groove; 24. arc angle.

Detailed Description

The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

As shown in fig. 1, a tear-resistant FPC includes: a connection site 2 and a connection body 1; the connecting position 2 is connected with the connecting main body 1; the width of the joint of the connecting position 2 and the connecting main body 1 is suddenly changed; the two ends of the connecting position 2 facing the side of the connecting main body 1 are provided with protrusions 22; a groove 23 is formed between the protrusion 22 and the connecting body 1; the groove 23 is a U-shaped groove.

According to the utility model, the bulge 22 is arranged at the width abrupt change position of the connection position 2 connected with the connection main body 1, the groove 23 is formed between the bulge 22 and the connection main body 1, and the design of arc transition is added at the bottom edge of the groove 23, so that the external force born by the width abrupt change region which is easy to tear at the connection position of the connection position 2 and the connection main body 1 is reduced by utilizing the connection of a smooth angle, thereby effectively preventing tearing and prolonging the service life of a product.

Further, as shown in fig. 3, the bottom edge and two side edges of the groove 23 are connected by circular arcs 24.

In this embodiment, the protrusions 22 and the grooves 23 are arranged at the abrupt width change positions of the connection position 2 and the connection body 1, and the arc transition design is added at the bottom edge of the groove 23, so that the connection position is smoother, the stress concentration at the abrupt width change position is reduced, and the tearing is effectively prevented. The arc shape is used for connection, so that the connection is smoother and smoother, the existence of the protruding part is reduced, and the risk of tearing is reduced.

As a specific implementation manner of this embodiment, the connection bit 2 is welded to the motherboard.

Wherein the solder is melted by heating to fill the connection portion, and the solder forms a firm connection with the connection portion after cooling. When the anti-tearing FPC and the main board are welded, a specific welding tool and welding flux are needed to weld the connecting position 2 and the main board together.

As another specific implementation manner of this embodiment, the connection position 2 is connected to the motherboard by thermocompression bonding.

In this embodiment, the connection position 2 is connected to the motherboard by thermal compression welding. Specifically, the ends of the connection sites 2 are placed on connection points on a motherboard, and then the connection sites 2 and connection points are heated and pressed together using a thermocompression bonding technique to form a reliable connection. The connecting mode has higher connecting strength and stability, and can ensure that the anti-tearing FPC is not disconnected in the using process.

In addition, to further enhance the stability of the connection, auxiliary structures such as metal pins, fixing screws, etc. may be added between the connection site 2 and the main board. These auxiliary structures may provide additional retention force during connection, thereby ensuring the firmness of the connection.

Further, a first length d is arranged from the bottom edge of the groove 23 to the bottom edge of the connection position 2, and the first length d enables a safe distance to be reserved between the bottom edge of the groove 23 and the circuit of the connection position 2.

Example two

In this embodiment, as shown in fig. 1, a gold finger 21 is disposed at the connection position of the bottom edge of the connection position 2.

Further, the gold finger 21 is formed by exposing the inner copper foil of the connection site 2.

Further, the golden fingers 21 are elongated, and the golden fingers 21 are distributed at intervals on the bottom edge of the connecting position 2.

Further, the golden finger 21 protrudes from the bottom edge of the connecting position 2.

The connecting position 2 is provided with a golden finger 21 at the connecting position of the bottom edge and is used for being connected with other circuit boards. The golden fingers 21 are long strips, are distributed at intervals on the bottom edge of the connecting position 2, protrude out of the bottom edge of the connecting position 2 and are formed by exposing the inner copper foil of the connecting position 2. The stability and reliability of connection can be effectively improved, and meanwhile, the manufacturing and the assembly of the circuit board are also facilitated.

It should be noted that the golden finger 21 is a connection form on the connector of the electronic component, and is generally used for connecting the circuit board with other circuit boards or plugs. It is a metal contact protruding from the edge of the circuit board, and is usually made of copper, nickel or gold. The number and arrangement of the golden fingers 21 can be designed according to the requirements of the circuit board. In the circuit board manufacturing process, the gold finger 21 is usually formed by exposing the inner copper foil of the connection site 2 by chemical etching or machining. After the gold finger 21 is manufactured, it is also required to perform surface treatment such as gold plating or the like to improve the conductivity and corrosion resistance of the connection. The golden finger 21 has the advantages of high connection reliability, large contact area and capability of bearing larger current and voltage. Meanwhile, the shape and the arrangement mode of the golden fingers 21 can be designed according to the requirements of the circuit board, and the flexibility is high. Through above design and manufacturing, the reliable connection between the circuit boards can be realized, the stability and the reliability of the circuit boards are improved, and meanwhile, the manufacture and the assembly of the circuit boards are also convenient.

Example III

The utility model also provides an electronic device including an interposer and the anti-tearing FPC according to the first embodiment or the second embodiment, including: a connection site 2 and a connection body 1; the connecting position 2 is connected with the connecting main body 1; the width of the joint of the connecting position 2 and the connecting main body 1 is suddenly changed; the two ends of the connecting position 2 facing the side of the connecting main body 1 are provided with protrusions 22; a groove 23 is formed between the protrusion and the connecting body 1; the groove 23 is a U-shaped groove. And the connecting position 2 of the anti-tearing FPC is connected with the adapter plate 3. According to the utility model, the bulge 22 is arranged at the width abrupt change position of the connection position 2 connected with the connection main body 1, the groove 23 is formed between the bulge 22 and the connection main body 1, and the connection of the smooth angle is utilized by adding the design of arc transition at the bottom edge of the groove, so that the external force born by the width abrupt change region which is easy to tear at the connection position 2 and the connection main body 1 is reduced, thereby effectively preventing tearing and prolonging the service life of a product.

Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. A tear resistant FPC comprising: a connection site (2) and a connection body (1); the connecting position (2) is connected with the connecting main body (1); the width of the joint of the connecting position (2) and the connecting main body (1) is suddenly changed; the two ends of the connecting position (2) facing one side of the connecting main body (1) are provided with bulges (22); a groove (23) is formed between the bulge and the connecting main body (1); the groove (23) is a U-shaped groove.

2. The ripstop FPC of claim 1, wherein: the bottom edge and the two side edges of the groove (23) are connected by an arc (24).

3. The ripstop FPC of claim 1, wherein: the connecting position (2) is welded with the main board.

4. The ripstop FPC of claim 1, wherein: the connecting position (2) is connected with the main board through hot-press welding.

5. The ripstop FPC of claim 1, wherein: and a golden finger (21) is arranged at the joint of the bottom edges of the connecting positions (2).

6. The ripstop FPC of claim 5, wherein: the golden finger (21) is formed by exposing the inner copper foil of the connecting position (2).

7. The ripstop FPC of claim 5, wherein: the golden fingers (21) are long-strip-shaped, and the golden fingers (21) are distributed at intervals on the bottom edge of the connecting position (2).

8. The ripstop FPC of claim 5, wherein: the golden finger (21) protrudes out of the bottom edge of the connecting position (2).

9. The ripstop FPC of claim 1, wherein: the bottom edge of the groove (23) to the bottom edge of the connecting position (2) is provided with a first length (d), and the first length (d) enables a safe distance to be reserved between the bottom edge of the groove (23) and the circuit of the connecting position (2).

10. An electronic device, characterized by comprising an interposer and a tear-proof FPC as claimed in any one of claims 1-9, the connection site (2) of the tear-proof FPC being connected to the interposer (3).