CN203416496U

CN203416496U - FPC protection structure

Info

Publication number: CN203416496U
Application number: CN201320418602.XU
Authority: CN
Inventors: 邹能
Original assignee: SHENZHEN LEAD DISPLAY EQUIPMENT CO Ltd
Current assignee: SHENZHEN LEAD DISPLAY EQUIPMENT CO Ltd
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2014-01-29
Anticipated expiration: 2023-07-15

Abstract

The utility model discloses an FPC protection structure. A part, connected with a PCB, on an FPC (1) adopts a single layer copper wire region, one surface of the region is provided with a connector (3), the other surface is provided with a reinforcing steel sheet (2), a soft plate layer (4) is further arranged between the single layer copper wire region and the reinforcing steel sheet (2), and the width of the soft plate layer (4) along the routing direction is greater than that of the reinforcing steel sheet (2). By additionally arranging the soft plate layer, the isolation protection for positions of the single layer copper wire easily cut by the steel sheet is performed, so as to protect the circuit layer from being cut or torn by edges of the steel sheet; and the height difference between the single layer copper wire region in the FPC and the steel sheet is decreased, the original one step is changed into two steps, the thickness difference between the structural components are reduced, and the destructive effect caused by cutting is further reduced.

Description

A kind of FPC protection structure

Technical field

The utility model relates to wiring board technical field, relates in particular to a kind of FPC protection structure.

Background technology

FPC (Flexible Printed Circuit, flexible printed circuit board) in the connected mode with PCB, have a variety of, wherein a kind of is the mode that adopts board to board connector, be on FPC, to be welded with a male seat (or female seat), the upper corresponding female seat (or male seat) that is welded with of PCB.In order to guarantee the freely movable of FPC, the FPC of coupling part adopts the mode of individual layer cabling.In order to guarantee that each pad of connector can weld with the pin of connector, SMT(Surface Mounted Technology, surface mounting technology) technological requirement pad is smooth, and FPC is soft board, just need to increase a hardboard at the back side of many pins elements such as connector, hardboard reinforcement planarization is good, and hardness is strong.As shown in Figure 1 to Figure 3, FPC1 is upper, and the part being connected with PCB adopts individual layer copper cash region, and one side arranges connector 3, and another side is provided with a reinforcement steel disc 2.This mode has a very large potential safety hazard, because the hardness of reinforcement steel disc is large, and section is sharp, the position, edge that individual layer circuit pack contacts on reinforcement steel disc and FPC, the FPC of this position is being used and is reprocessing middle under tension, and reinforcement steel disc can be torn by the FPC edge as paper knife.If just in time have cabling in position, edge, so will line disconnection, cause FPC service interruption, the component failure that FPC connects.

Utility model content

The purpose of this utility model is the defect existing for above-mentioned prior art, and a kind of FPC protection structure is provided.

The technical solution adopted in the utility model is; design a kind of FPC protection structure; on described FPC; the part being connected with PCB adopts individual layer copper cash region; one side arranges connector, and another side is provided with a reinforcement steel disc, wherein; between described individual layer copper cash region and described reinforcement steel disc, be also provided with a soft board layer, described soft board layer is greater than the width of reinforcement steel disc along the width of direction of routing.

In one embodiment, described soft board layer comprises copper layer and the coverlay being fitted in successively on individual layer copper cash region.

Described individual layer copper cash region is comprised of coverlay, copper layer and coverlay.

Compared with prior art, the utility model is set up one deck soft board layer by employing individual layer copper cash is played to insulation blocking by the clipped position of steel disc, avoids the cutting of steel disc edge tear with protective circuit layer; The difference in height that reduces individual layer copper cash region and steel disc in FPC, is increased to two-stage step by original one-level step, reduces the thickness difference between structural member, further to reduce to shear the destruction causing.

Accompanying drawing explanation

Fig. 1 is the structural representation of prior art FPC;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the enlarged drawing of A portion in Fig. 2;

Fig. 4 is the structural representation of the utility model one embodiment.

Embodiment

Below in conjunction with drawings and Examples, utility model is described in detail.

As shown in Figure 4; the FPC protection structure the utility model proposes; the part being connected with PCB on FPC1 adopts individual layer copper cash region; one side arranges connector 3; another side is provided with a reinforcement steel disc 2; wherein, be also provided with a soft board layer 4 between individual layer copper cash region and reinforcement steel disc 2, the width along direction of routing of this soft board layer 4 is greater than the width of reinforcement steel disc 2.

As can be seen from Figure 4, FPC1 comprises double-deck copper cash region and the individual layer copper cash region for being connected with PCB, and this individual layer copper cash region is comprised of coverlay, copper layer and coverlay, is welded with connector 3 on the coverlay of a side.On opposite side coverlay, in the back position of connector 3, be placed with a soft board layer 4, comprise and be fitted in successively copper layer and the coverlay on individual layer copper cash region in FPC1, by squeezing to close, soft board layer 4 and the individual layer copper cash region of FPC1 are adjacent to.On soft board layer 4, one reinforcement steel disc 2(is installed can be other reinforcement hardboards certainly in the position corresponding with connector 3), soft board layer 4 can be close together by hot pressing conducting resinl with reinforcement steel disc 2.The area of soft board layer 4 is greater than the area of reinforcement steel disc 2, while making reinforcement steel disc 2 be attached to soft board layer 4, its face contacting with soft board layer 4 is placed in soft board layer 4 surface completely, and the surperficial periphery contacting with soft board layer 4 on reinforcement steel disc 2 all drops in the surface of this soft board layer 4.

Below in conjunction with Figure of description 4 simple declarations protection philosophy once:

The cabling in the individual layer copper cash region on FPC1 adopts copper cash; between individual layer copper cash region and reinforcement steel disc 2, set up a soft board layer 4; and the soft board layer 4 of setting up is than one section of reinforcement steel disc 2 length; make the edge of reinforcement steel disc 2 not contact routing layer; the cutting out section that copper cash on individual layer copper cash region is vulnerable to reinforcement steel disc 2 plays insulation blocking; in the soft board layer 4 of setting up, contain copper layer, the copper sheet structure of copper layer can play a very good protection to the copper cash in the individual layer copper cash region on FPC1.Owing to having set up soft board layer 4, thickeied the thickness of reinforcement steel disc 2 position coverlays and copper layer structure, by original one-level step, be increased to two-stage step, can further reduce to shear the destruction causing.

The utility model is set up one deck soft board layer by employing individual layer copper cash is played to insulation blocking by the clipped position of steel disc, avoids the cutting of steel disc edge tear with protective circuit layer; Reduce the difference in height in individual layer copper cash region and steel disc in FPC, reduce the thickness difference between structural member, further reduce to shear the destruction causing.

Claims

1. a FPC protects structure; on described FPC (1); the part being connected with PCB adopts individual layer copper cash region; one side arranges connector (3); another side is provided with a reinforcement steel disc (2); it is characterized in that: between described individual layer copper cash region and described reinforcement steel disc (2), be also provided with a soft board layer (4), described soft board layer (4) is greater than the width of reinforcement steel disc (2) along the width of direction of routing.

2. FPC protection structure according to claim 1, is characterized in that: described soft board layer (4) comprises copper layer and the coverlay being fitted in successively on individual layer copper cash region.

3. FPC protection structure according to claim 1, is characterized in that: described individual layer copper cash region is comprised of coverlay, copper layer and coverlay.