CN102098875B

CN102098875B - Jointed board connecting structure of flexible printed circuit (FPC) and printed circuit board (PCB) in flexible/rigid printed board

Info

Publication number: CN102098875B
Application number: CN 201110039376
Authority: CN
Inventors: 王勇
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2011-02-16
Filing date: 2011-02-16
Publication date: 2013-04-17
Anticipated expiration: 2031-02-16
Also published as: CN102098875A

Abstract

The invention discloses a jointed board connecting structure of a flexible printed circuit (FPC) and a printed circuit board (PCB) in a flexible/rigid printed board, and belongs to the field of electronic products. The jointed board connecting structure is arranged at a joint of the FPC and the PCB and comprises an external bump arranged at the joint of the FPC and the PCB; and the external bump extends to the FPC. In the embodiment of the invention, the external bump is added on the PCB, so that the rigidity strength is enough to split the boards conveniently by a machine and the quality of the split boards can be effectively ensured.

Description

The jigsaw syndeton of FPC and PCB in a kind of rigid-flex

Technical field

The present invention relates to electronic product, particularly the jigsaw syndeton of FPC and PCB in a kind of rigid-flex.

Background technology

Rigid-flex (Rigid-Flex Printed Board or title F/R PWB, soft or hard plywood) is with FPC (Flexible Printed Circuits, flexible printed circuit board) with PCB (PCB Printed CircuitsBoard, printed circuit board (PCB)) be combined into the electronic component of identical product, early stage purposes is many in fields such as military affairs, medical treatment, industrial instrumentations.At present along with electronic product more and more towards miniaturization, lightening development, rigid-flex begins for end products such as mobile communication and consumption electronic products (such as digital camera DSC, digital camera DV).

At present, in the mobile phone products design, for satisfying the structural design needs, often rigid-flex need to be made stereochemical structure.But because the rigid-flex size in the mobile phone is less, if described rigid-flex is processed into one by one soft or hard veneer, cost of manufacture can be very high.At present, be to reduce cost, usually adopt several soft or hard veneers are designed to whole plate by the jigsaw syndeton, republish, and then after required soft or hard veneer cut out minute along the jigsaw syndeton, be used.

As shown in Figure 1, the jigsaw syndeton of FPC and PCB in the rigid-flex in the prior art, wherein, FPC2 and PCB1 are for directly to be connected, and minute Board position namely divides plate along their line of demarcation at FPC and PCB intersection 3.

In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:

Because FPC2 and PCB1 are for directly to be connected, and FPC self is softer, employing is mechanical when dividing plate fixing FPC so that FPC is taken up easily, causes FPC to tear, and can't guarantee a minute plate quality.

Summary of the invention

In order to solve available technology adopting machinery minute plate, can't guarantee minute problem of plate quality, the embodiment of the invention provides the jigsaw syndeton of FPC and PCB in a kind of rigid-flex.

Described technical scheme is as follows:

The jigsaw syndeton of FPC and PCB in a kind of rigid-flex is arranged on the junction of FPC and PCB, and described jigsaw syndeton is included in the outer teat that described PCB and described FPC junction arrange, and described outer teat extends to described FPC direction.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: the embodiment of the invention has guaranteed enough rigidity intensity by the structure of teat outside increasing in PCB compared to existing technology, makes things convenient for machine to divide the plate operation, and can effectively guarantee a minute plate quality.

The described structure of the embodiment of the invention not only is fit to rigid-flex, and is fit to minute plate zone design that all are connected with PCB with FPC.

Description of drawings

Fig. 1 is the schematic diagram of the jigsaw syndeton of FPC and PCB in the rigid-flex described in the prior art;

Fig. 2 is the schematic diagram of the jigsaw syndeton of FPC and PCB in the described rigid-flex of the embodiment of the invention;

Fig. 3 is the partial enlarged drawing of Fig. 2;

Fig. 4 is another structure chart of the described PCB of the embodiment of the invention and outer teat junction;

Fig. 5 is another structure chart of the described PCB of the embodiment of the invention and outer teat junction.

Among the figure: 1PCB, 1.1 outer teats, 1.2PCB and outer teat junction, 2FPC, the 2.1FPC clipping region, 3PCB and FPC intersection,

A evagination minister degree,

BFPC clipping region length.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.

As shown in Figure 2, the jigsaw syndeton of FPC and PCB in the described rigid-flex of the embodiment of the invention is arranged on the junction of FPC2 and PCB1, and the jigsaw syndeton is included in the outer teat 1.1 that described PCB1 and described FPC2 junction arrange, wherein, outer teat 1.1 extends to the FPC2 direction.

The embodiment of the invention guarantees enough rigidity intensity by the structure of teat outside increasing in PCB1, make things convenient for machine to divide the plate operation, and can effectively guarantee a minute plate quality.

Particularly, as shown in Figure 3, the length a of outer teat 1.1 〉=2.0mm, a=2.0mm in this example, and the junction 1.2 of outer teat 1.1 and PCB1 makes things convenient for production for entity is connected.In this example, the width of outer teat 1.1 equates with the width of FPC, is convenient to production.

Particularly, as shown in Figure 4, outer teat 1.1 can also be provided with a plurality of holes with the junction 1.2 of PCB1, and described a plurality of holes are linear and arrange by the interval rule, has made things convenient for separating of outer teat 1.1 and PCB1.In this example, described hole is circular hole, is convenient to production, and those skilled in the art know that described hole can also be the hole of any shapes such as square hole, rectangular opening, diamond hole certainly.

Particularly, as shown in Figure 5, described outer teat 1.1 is provided with intermittent line (referring to the dotted line among Fig. 5) with the junction 1.2 of described PCB1, and that described intermittent line is is linear, the interval rule is arranged, has made things convenient for separating of outer teat 1.1 and PCB1.

In realizing process of the present invention, the inventor finds, adopts above-mentioned outside the increase of PCB1 place the structure of teat 1.1, although can adopt Punch (punching press) mode to divide plate, owing to adopt Punch to divide the plate mode, need the anchor clamps of specialty, the anchor clamps expense is high, and integrated cost is large.If adopt Routing to divide plate or manual minute plate, disconnect relatively difficulty at FPC and PCB intersection, the operating space is not enough; As strengthen the spatial separation of link position, then very large to jigsaw utilance and rigid-flex cost impact.

Can use Routing to divide board device to divide the problem of plate in order to solve the rigid-flex jigsaw, present embodiment, as shown in Figure 2, also can FPC clipping region 2.1 be set outside between teat 1.1 and the FPC2 referring to Fig. 3, be about to minute plate connection bit side direction in the jigsaw and move namely and move to the left side of Fig. 2, wherein, FPC clipping region 2.1 arranges that without circuit namely FPC clipping region 2.1 does not allow to spread copper, and clipping region and FPC2 adopt other zone boundaries copper cash to distinguish.Wherein, FPC clipping region length b 〉=2mm, a convenient minute board device divides the plate operation.In this example, b=2mm.Therefore, present embodiment has satisfied a minute board device versatility requirement, has realized the accurate cutting between FPC and PCB, has reached the effect that reduces the product manufacturing expense.

Of the present invention minute plate operating procedure:

1, adopt Routing and the manual mode of cutting out to divide plate

Referring to Fig. 3, adopt first Routing to divide the plate mode that PCB1 is separated with outer teat 1.1, then from the FPC cut out areas outer teat 1.1 is removed with scissors manual, can obtain scoreboard.

2, adopt Punch to divide the plate mode to divide plate

Referring to Fig. 3, directly 2.1 carry out the Punch die-cut operation from the FPC clipping region, can obtain scoreboard.

Therefore, adopt the described structure of the embodiment of the invention, under the General Requirement that satisfies minute board device, can reduce the manufacturing expense of product.

The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. the jigsaw syndeton of FPC and PCB in the rigid-flex is arranged on the junction of FPC and PCB, and described jigsaw syndeton is included in the outer teat that described PCB and described FPC junction arrange, wherein, described outer teat extends to described FPC direction, it is characterized in that

Be provided with the FPC clipping region between described outer teat and the described FPC, described FPC arranges without circuit the clipping region;

The length of described outer teat is more than or equal to 2 millimeters, and the length of described FPC clipping region is more than or equal to 2 millimeters.

2. jigsaw syndeton as claimed in claim 1 is characterized in that, described outer teat is that entity is connected with the junction of described PCB.

3. jigsaw syndeton as claimed in claim 1 is characterized in that, the junction of described outer teat and described PCB is provided with a plurality of holes, and described a plurality of holes are linear and are the interval rule to be arranged.

4. jigsaw syndeton as claimed in claim 1 is characterized in that, the junction of described outer teat and described PCB is provided with intermittent line, and described intermittent line is linear and is the interval rule arranges.