CN202269096U

CN202269096U - Flexible circuit board structure

Info

Publication number: CN202269096U
Application number: CN2011203792466U
Authority: CN
Inventors: 熊健劲
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2012-06-06
Anticipated expiration: 2021-09-27

Abstract

The utility model provides a flexible circuit board structure, which comprises a base plate and a plurality of golden fingers attached to the upper surface of the base plate. A pad of the golden fingers is connected with line copper foil on the base plate, wherein a part of the line copper foil close to the pad of the golden fingers is thickened, and a thickening range is from 0.08 mm to the same width as the width of the pad of the golden fingers. The flexible circuit board structure improves reliability of connection of a local area of the golden fingers and overcomes the shortcoming that the areas of the end portions of the golden fingers are easy to break in the prior art. Furthermore, the length of a thickening line section is distributed between 1 mm and 0.3 mm evenly by controlling the line copper foil so that the end points of connection positions between the line copper foil and the pad of the golden fingers form an arc structure, and local stress can be effectively prevented from being too centralized.

Description

A kind of flexible circuit plate structure

Technical field

The utility model relates to the circuit board technology field, relates in particular to a kind of flexible circuit plate structure.

Background technology

Flexible PCB; It is our usually said FPC circuit board; Have the advantage that many hard circuit boards do not possess, for example can free bend, volume sticks up, folding, can move arbitrarily and flexible according to space layout; Dwindle the volume of electronic product, adapted to the growth requirement of electronic product high density, miniaturization, highly reliable direction.

Flexible circuit plate structure as shown in Figure 1 comprises substrate 10 and a plurality of golden fingers 11 that fit in substrate 10 upper surfaces, and the pad of golden finger 11 is connected with circuit Copper Foil 12 on the substrate 10.Because golden finger is an interface easy to plug, in the plug process, the junction of golden finger 11 pads and circuit Copper Foil 12, promptly usually said golden finger end regions ruptures easily.

The utility model content

For this reason, the utility model technical problem to be solved is: a kind of flexible circuit plate structure is provided, to overcome the shortcoming of the end regions of golden finger described in background technology easy fracture.

So; The utility model provides a kind of flexible circuit plate structure; Comprise substrate and fit in a plurality of golden fingers of upper surface of base plate that the pad of golden finger is connected with circuit Copper Foil on the substrate, wherein; Will be near the local overstriking of the said line Copper Foil width at golden finger pad place, it is wide that its overstriking scope is that 0.08mm arrives with golden finger pad width.

Said golden finger pad width is 0.2mm.

Width is by the line Copper Foil of local overstriking, its length that adds beam be 1mm to evenly distributing between the 0.3mm, it is circular-arc with golden finger pad junction end points formation.

The said flexible circuit plate structure of the utility model; Through only will be near the local overstriking of the said line Copper Foil width at golden finger pad place; And the overstriking scope be controlled at 0.1mm to wide region such as golden finger pad width in; Strengthen the reliability that the golden finger regional area connects, overcome the shortcoming of the easy fracture of golden finger end regions described in the background technology.

Further, the length that adds beam through control line Copper Foil be 1mm to evenly distributing between the 0.3mm, make itself and the circular-arc structure of golden finger pad junction end points formation, can effectively prevent the too concentrated of local stress.

Description of drawings

Fig. 1 is a flexible PCB structural representation in the prior art;

Fig. 2 is the said flexible PCB structural representation of the utility model embodiment.

Embodiment

Below, in conjunction with accompanying drawing the utility model is described in detail.

As shown in Figure 2, present embodiment provides a kind of flexible circuit plate structure, comprises substrate 30 and a plurality of golden fingers 31 that fit in upper surface of base plate; The pad of golden finger is connected with circuit Copper Foil on the substrate; In the present embodiment, will be near the local overstriking of the said line Copper Foil width at golden finger pad place, its thickened portion a-quadrant; It is wide that its overstriking scope is that 0.08mm arrives with golden finger pad width, is generally 0.08mm to 0.2mm.This kind structure had both guaranteed the safe spacing between the pad of golden finger and the circuit Copper Foil join domain on the substrate, again can be with the reliability maximization of connecting line.

In the present embodiment; Circuit Copper Foil thickened portion on the substrate only is local overstriking; Be to save the space, its not thickened portion still be 0.08mm between the 0.12mm, pad of so still can the guarantee fund pointing and the reliability between the circuit Copper Foil join domain on the substrate.

Further, can also control the length of the circuit Copper Foil thickened portion on the substrate, width is by the line Copper Foil of local overstriking, its length that adds beam be 1mm to evenly distributing between the 0.3mm, it is circular-arc with golden finger pad junction end points formation.The end that this kind structure prevents to add beam stress occurs easily and concentrates fracture at same straight line height when golden finger plug bending.The end points that adds thick line, the track of formation are circular arc.

In sum; The said flexible circuit plate structure of the utility model; Through only will be near the local overstriking of the said line Copper Foil width at golden finger pad place; And the overstriking scope be controlled at 0.1mm to wide region such as golden finger pad width in, strengthened the reliability that the golden finger regional area connects, overcome the shortcoming of the easy fracture of golden finger end regions described in the background technology.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims

1. flexible circuit plate structure; Comprise substrate and a plurality of golden fingers that fit in upper surface of base plate; The pad of golden finger is connected with circuit Copper Foil on the substrate; It is characterized in that, will be near the local overstriking of the said line Copper Foil width at golden finger pad place, it is wide that its overstriking scope is that 0.08mm arrives with golden finger pad width.

2. flexible circuit plate structure according to claim 1 is characterized in that, said golden finger pad width is 0.2mm.

3. flexible circuit plate structure according to claim 1 is characterized in that, width is by the line Copper Foil of local overstriking, its length that adds beam be 1mm to evenly distributing between the 0.3mm, it is circular-arc with golden finger pad junction end points formation.