CN205196083U

CN205196083U - Flexible circuit board

Info

Publication number: CN205196083U
Application number: CN201520984348.9U
Authority: CN
Inventors: 谭绿水
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2015-12-01
Filing date: 2015-12-01
Publication date: 2016-04-27
Anticipated expiration: 2025-12-01

Abstract

The utility model provides a flexible circuit board, includes: body and stiffening plate, the body has the circuit district and the end of pegging graft, circuit district with the end electricity of pegging graft is connected, the reinforcement packs the structure and is in peg graft the end a surface and extend to in the circuit district. Flexible circuit board will fold the structure and extend to at end no. 1 stiffening plate on the surface of pegging graft in the circuit district, just so avoided the boundary line of stiffening plate with peg graft the end with the overlapping of the boundary line's between the circuit district position makes handing -over line department is the saltation zone of width and the saltation zone that can bear the stress intensity no longer simultaneously. Like this, be in the end of pegging graft pulls out inserts the in -process, flexible circuit board just is difficult to torn.

Description

Flexible PCB

Technical field

The utility model relates to field of circuit boards, particularly a kind of flexible PCB.

Background technology

Flexible PCB (FlexiblePrintedCircuit is called for short FPC) is the vitals in the miniaturized electronicss such as mobile phone.Flexible PCB is for the one that base material is made has height reliability, flexual printed circuit board (PCB) with polyimides or polyester film, there is the features such as distribution density is high, lightweight, thickness is thin, bending property is good, be mainly used in the products such as mobile phone, notebook computer, palmtop PC PDA, digital camera, liquid crystal display module LCM.

Such as, in display floater, backlight module be exactly utilize flexible PCB to be connected to the control circuit board of display floater connector on realize electrically conducting.Usually, flexible PCB comprises one or more inserted terminal, described flexible PCB by the connector that its inserted terminal is inserted into device to be connected to realize being electrically connected.In order to avoid the electronic component on inserted terminal in use causes inefficacy due to bending, often sclerosis reinforcement is carried out to described inserted terminal.In prior art, it is the object by realizing inserted terminal sclerosis reinforcement in the mode not arranging the surperficial bonding and reinforcing plate of electronic component of flexible PCB link.

But, in prior art, please refer to Fig. 1, flexible PCB comprises: body 10 and stiffening plate 20, described body 10 has line areas 11 and inserted terminal 12, described line areas 11 is electrically connected with described inserted terminal 12, described stiffening plate 20 fold structure at described inserted terminal 12 one on the surface, a wherein boundary line of described stiffening plate 20 and described inserted terminal 12 overlapping with the boundary line 13 of described line areas 11.Because the width of described inserted terminal 12 is different at boundary line 13 place with the width of described line areas 11, namely the width of body 10 is undergone mutation at described boundary line 13 place, this just causes described body 10 easily to rupture at described boundary line 13 place, and in prior art, again a wherein boundary line of described stiffening plate 20 and described inserted terminal 12 are overlapped with the boundary line 13 of described line areas 11, make described handing-over line 13 place be not only the saltation zone of width, be also the saltation zone that can bear stress intensity simultaneously.Like this, in described inserted terminal 12 plug process, the region near the boundary line 13 of described inserted terminal 12 and described line areas 11 is easily torn owing to being subject to the effect of external force, causes flexible PCB to rupture, produces bad.

Utility model content

The purpose of this utility model is to provide a kind of flexible PCB not easily torn.

A kind of flexible PCB, comprising:

Body, has line areas and inserted terminal, and described line areas is electrically connected with described inserted terminal;

Stiffening plate, folded structure is on a surface of described inserted terminal and extend in described line areas.

Compared with prior art, the stiffening plate of folded structure on inserted terminal one surface has extended in described line areas by described flexible PCB, doing so avoids the overlapping of the position of the boundary line between the boundary line of described stiffening plate and described inserted terminal with described line areas, make described boundary line place be the saltation zone of width and the saltation zone that can bear stress intensity no longer simultaneously.Like this, in described inserted terminal plug process, described flexible PCB is just not easy to be torn.

Accompanying drawing explanation

Fig. 1 is the generalized section of flexible PCB in prior art;

The schematic top plan view of a kind of flexible PCB that Fig. 2 provides for the utility model;

Fig. 3 is the generalized section of a kind of flexible PCB shown in Fig. 2.

Description of reference numerals:

10 body 20 stiffening plate 30 glue-lines

11 line areas 12 inserted terminal 13 intersections

111 signal processing part 112 connecting portions

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.Be understandable that, specific embodiment described herein only for explaining the utility model, but not to restriction of the present utility model.It also should be noted that, for convenience of description, illustrate only the part relevant to the utility model in accompanying drawing but not entire infrastructure.

Please refer to Fig. 2 and Fig. 3, the utility model provides a kind of flexible PCB, and described flexible PCB, comprising: body 10 and stiffening plate 20, described stiffening plate 20 fold structure at described body 10 one on the surface.

Described body 10 has line areas 11 and inserted terminal 12, and described line areas 11 is electrically connected with described inserted terminal 12.Described line areas 11 comprises signal processing part 111 and connecting portion 112, and described signal processing part 111 realizes being electrically connected by the cabling on described connecting portion 112 with described inserted terminal 12.

Described stiffening plate 20 fold structure described body 10 inserted terminal 12 one surface and extend in described line areas 11, optionally, described stiffening plate 20 extends in the connecting portion 112 of described line areas 11.The region encircled a city in the border that described stiffening plate 20 is only positioned at described body 10.Described stiffening plate 20 all covers or part covers described inserted terminal 12.The material making described stiffening plate 20 is glass fibre, polyimides or metal.Described stiffening plate 20 is lamina or multi-layer sheet.Described stiffening plate 20 is bonding with described body 10 by glue-line 30.At the intersection of described inserted terminal 12 with described line areas 11, the width of described inserted terminal 12 and the width of described line areas 11 unequal.The length that described stiffening plate 20 extends to described line areas 11 part is more than or equal to 0.5mm.

Compared with prior art, the stiffening plate 20 of folded structure on inserted terminal 12 1 surface has extended in described line areas 11 by described flexible PCB, doing so avoids the overlapping of the position of the boundary line 13 between the boundary line of described stiffening plate 20 and described inserted terminal 12 with described line areas 11, make described boundary line 13 place be the saltation zone of width and the saltation zone that can bear stress intensity no longer simultaneously.Like this, in described inserted terminal 12 plug process, described flexible PCB is just not easy to be torn.And in prior art, due to described inserted terminal 12 area need do as far as possible little, so the area of described stiffening plate 20 also can be smaller, because the Area comparison of described stiffening plate 20 is little, this results in described stiffening plate 20 less with the bond area of described body 10, easily come off, and the stiffening plate 20 of folded structure on inserted terminal 12 1 surface has extended in described line areas 11 by the flexible PCB that the utility model provides, which increases the bond area of described stiffening plate 20 and described body 10, reduce the possibility that described stiffening plate 20 comes off, improve the reliability of described flexible PCB.

Although the utility model with preferred embodiment openly as above, but it is not for limiting the utility model, any those skilled in the art, not departing from spirit and scope of the present utility model, can utilize the Method and Technology content of above-mentioned announcement to make possible variation and amendment to technical solutions of the utility model.Therefore, every content not departing from technical solutions of the utility model, any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all belong to the protection range of technical solutions of the utility model.

Claims

1. a flexible PCB, is characterized in that, comprising:

2. flexible PCB as claimed in claim 1, is characterized in that, the region encircled a city in the border that described stiffening plate is only positioned at described body.

3. flexible PCB as claimed in claim 2, is characterized in that, described stiffening plate all covers or part covers described inserted terminal.

4. flexible PCB as claimed in claim 1, it is characterized in that, the material making described stiffening plate is glass fibre, polyimides or metal.

5. flexible PCB as claimed in claim 1, it is characterized in that, described stiffening plate is lamina or multi-layer sheet.

6. flexible PCB as claimed in claim 1, it is characterized in that, described stiffening plate is bonding with described body by glue-line.

7. flexible PCB as claimed in claim 1, is characterized in that, at the intersection of described inserted terminal and described line areas, the width of described inserted terminal and the width of described line areas unequal.

8. flexible PCB as claimed in claim 1, it is characterized in that, the length that described stiffening plate extends to described line areas part is more than or equal to 0.5mm.

9. flexible PCB as claimed in claim 1, it is characterized in that, described line areas comprises signal processing part and connecting portion, and described signal processing part realizes being electrically connected with the cabling of described inserted terminal by described connecting portion.

10. flexible PCB as claimed in claim 9, is characterized in that, described stiffening plate is folded structure on a surface of described inserted terminal and extended in the connecting portion of described line areas.