CN209676599U - One kind can weld concatenated flexible circuit board - Google Patents

Abstract

The utility model relates to one kind can weld concatenated flexible circuit board, a weld part is mainly arranged in it between the first flexible circuit board and the second flexible circuit board, and second flexible circuit board be equipped with a perforative via hole, when a heat source is seated in the second flexible circuit board, thermal energy caused by the heat source can pass through via hole, solder portion is set to obtain enough thermal energy and melt, after solder portion solidification, first flexible circuit board and the second flexible circuit board can be combined into one, and since the thickness of solder portion after solidifying can become comparable thin, region after welding two flexible circuit board has the advantages that small in size and does not take up space, make the utility model outside application can not above be limited by space and size, also it can use completely on various frivolous and small in size product.

Description

One kind can weld concatenated flexible circuit board

Technical field

The utility model relates to a kind of wiring boards, and particularly relating to one kind can weld concatenated flexible circuit board.

Background technique

It is well known that wiring board is also known as printed wiring board, it is often used english abbreviation PCB(Printed circuit Board) or PWB(Printed wire board is write) Lai Daibiao, and wiring board is mainly according to circuit design principle, it will connection electricity The wiring of sub-component is depicted as figure, then makes electricity according to modes such as the specified machining of design and surface treatments again Road wiring can carry out electric signal transmission between different electronic building bricks, and electronic equipment is enable to play expected function, So wiring board has become indispensable one of the component of many electronic equipments.

However, most electronic equipment develops towards frivolous and small in size direction in recent years, and due to soft route Plate has the characteristics such as light-weight, thickness is thin, soft and good flexibility, so that flexible circuit board is often employed in mobile phone, notes In the frivolous product small in size such as this computer and liquid crystal display, in addition to this, can also it be taken in the car light of current many vehicles With using the flexible circuit board with good flexibility, and vehicle car light need to often use length to cooperate the demand of circuit Longer flexible circuit board, but in practice, it is found that the longer flexible circuit board of length not only to manufacture difficult and yield very low, so Its price of the longer flexible circuit board of length is all very high, therefore in order to improve aforementioned problem, can be shorter by several segment length Flexible circuit board reaches required length in a manner of connecting, and using reduces the cost for using the longer flexible circuit board of length； And in the application field of current wiring board, the connection of flexible circuit board be by the way of male and female fastener, it is soft by several sections Wiring board mutually snaps together: but the mode of such snapping, not only the thickness in two flexible circuit board joints, which has, substantially mentions High situation, and the structure of male and female fastener causes the flexible circuit board for needing biggish space that could accommodate after the completion of snapping, and This is the major defect for traditional technology.

Utility model content

The utility model, which provides one kind, can weld concatenated flexible circuit board, mainly first flexible circuit board with One weld part is set between second flexible circuit board, and second flexible circuit board is equipped with one and runs through second flexible circuit board Via hole, and after a heat source is seated in second flexible circuit board, thermal energy caused by the heat source can pass through the conducting Hole makes the solder portion obtain enough thermal energy and melt, and after solder portion solidification, by first flexible circuit board and can be somebody's turn to do Second flexible circuit board is combined into one, and since the thickness of the solder portion after solidifying can become comparable thin, keeps this two soft Property wiring board welding after region have the advantages that small in size and do not take up space, make the utility model apply above can not be by space And outside the limitation of size, it can also use completely on various frivolous and small in size product, and this is the master for the utility model Syllabus.

The technology employed by the present utility model is one kind can weld concatenated flexible circuit board comprising one first Flexible circuit board, one second flexible circuit board and a weld part, wherein first flexible circuit board at least has a first noumenon And one be arranged in the first weld pad on the first noumenon, and the first noumenon includes one first soft substrate plate, one first insulation Layer and one first conductive layer, two opposite sides of first conductive layer respectively with first soft substrate plate and the first insulating layer phase Connection, first weld pad are arranged on first conductive layer of the first noumenon and can carry out Lian Xinglian with first conductive layer It connects, the lateral margin of first weld pad and first insulating layer are mutually in succession.

At least there is second flexible circuit board one second ontology, one the second weld pad and one on second ontology is arranged in Run through the via hole of second ontology and second weld pad simultaneously, which has positive and negative two sides, the positive and negative two sides A respectively first side and a second side, second weld pad are arranged in the first side of second ontology, and this Two ontologies include one second soft substrate plate, a second insulating layer and one second conductive layer, two opposite sides of second conductive layer Face respectively with second soft substrate plate and the second insulating layer mutually in succession, second weld pad be arranged in second ontology this second It can be electrically connected on conductive layer and with second conductive layer, and the lateral margin of second weld pad connects with the second insulating layer, The weld part is located between first weld pad of first flexible circuit board and second weld pad of second flexible circuit board simultaneously It is oppositely arranged with a wherein opening for the via hole.

When specific implementation, the hole wall of the via hole of second flexible circuit board is equipped with a heat-conducting layer, this is thermally conductive Layer is connected with second weld pad of second flexible circuit board and the solder portion.

It is that a heat source is seated in this is second soft the utility model has the following beneficial effects: when utility model works In the second side of second ontology of property wiring board, thermal energy caused by the heat source can be thermally conductive by this on the via hole Layer, enables the solder portion to obtain enough thermal energy and melt, and to remove the heat source, and after solder portion solidification, can incite somebody to action First weld pad of first flexible circuit board is combined into one with second weld pad of second flexible circuit board, and due to solid What the thickness of the solder portion can become after change is comparable thin, and the region after welding two flexible circuit board has small in size and not The advantages of taking up space, thus the utility model application it is upper do not limited by space and size outside, can also use completely various On frivolous and small in size product.

Detailed description of the invention

Fig. 1 is the STRUCTURE DECOMPOSITION diagrammatic cross-section of the utility model.

Fig. 2 is the diagrammatic cross-section after the structure of the utility model combines.

Specific embodiment

As shown in Figures 1 and 2, one kind can weld concatenated flexible circuit board comprising one first flexible circuit board 10, one Second flexible circuit board 20 and a weld part 30, wherein first flexible circuit board 10 at least there is a first noumenon 11 and one to set The first weld pad 12 on the first noumenon 11 is set, and the first noumenon 11 includes that one first soft substrate plate 111, one first is exhausted Edge layer 112 and one first conductive layer 113, two opposite sides of first conductive layer 113 respectively with first soft substrate plate 111 and First insulating layer 112 is connected, which is arranged on first conductive layer 113 of the first noumenon 11 and can be with First conductive layer 113 carry out even property connection, the lateral margin of first weld pad 12 with 112 phase of the first insulating layer in succession.

The second weldering on second ontology 21 is at least arranged in second flexible circuit board 20 with one second ontology 21, one For pad 22 and one simultaneously through the via hole 23 of second ontology 21 and second weld pad 22, which has positive and negative two sides Face, the positive and negative two sides are respectively a first side 211 and a second side 212, which is arranged at this second In the first side 211 of body 21, and second ontology 21 include one second soft substrate plate 213, a second insulating layer 214 and One second conductive layer 215, two opposite sides of second conductive layer 215 respectively with second soft substrate plate 213 and this second absolutely In succession, which is arranged on second conductive layer 215 of second ontology 21 and second can lead with this 214 phase of edge layer Electric layer 215 is electrically connected, and the lateral margin of second weld pad 22 connects with the second insulating layer 214, which is located at Between first weld pad 12 of first flexible circuit board 10 and second weld pad 22 of second flexible circuit board 20 and with this A wherein opening for via hole 23 is oppositely arranged.

When specific implementation, the hole wall of the via hole 23 of second flexible circuit board 20 is equipped with a heat-conducting layer 231, The heat-conducting layer 231 is connected with second weld pad 22 of second flexible circuit board 20 and the solder portion 30.

It is second ontology 21 that a heat source is seated in second flexible circuit board 20 when utility model works The second side 212 on, thermal energy caused by the heat source can make the solder by the heat-conducting layer 231 on the via hole 23 Portion 30 can obtain enough thermal energy and melt, can be first soft by this to remove the heat source, and after the solder portion 30 solidification Property wiring board 10 first weld pad 12 and second weld pad 22 of second flexible circuit board 20 be combined into one, and due to solid What the thickness of the solder portion 30 can become after change is comparable thin, and the region after welding two flexible circuit board 10,20 has body Product is small and the advantages of do not take up space, thus the utility model application is upper do not limited by space and size outside, can also make completely With on various frivolous and small in size product.

Claims (2)

1. one kind can weld concatenated flexible circuit board, it is characterised in that: including one first flexible circuit board, one second flexible wire Road plate and a weld part, wherein first flexible circuit board at least has a first noumenon and one is arranged on the first noumenon First weld pad, and the first noumenon includes one first soft substrate plate, one first insulating layer and one first conductive layer, this first is led Two opposite sides of electric layer are connected with first soft substrate plate and first insulating layer respectively, first weld pad setting this On first conductive layer of one ontology and can be carried out with first conductive layer even property connect, the lateral margin of first weld pad with this first Insulating layer phase is in succession；

At least there is second flexible circuit board one second ontology, one the second weld pad and one on second ontology is arranged in simultaneously Through the via hole of second ontology and second weld pad, which has positive and negative two sides, the positive and negative two sides difference For a first side and a second side, which is arranged in the first side of second ontology, and this second Body includes one second soft substrate plate, a second insulating layer and one second conductive layer, two opposite sides point of second conductive layer Not in succession with second soft substrate plate and second insulating layer phase, which is arranged in second conduction of second ontology It can be electrically connected on layer and with second conductive layer, and the lateral margin of second weld pad connects with the second insulating layer, the weldering Socket part be located between first weld pad of first flexible circuit board and second weld pad of second flexible circuit board and with this A wherein opening for via hole is oppositely arranged.

2. one kind as described in claim 1 can weld concatenated flexible circuit board, it is characterised in that: second flexible circuit board The via hole hole wall be equipped with a heat-conducting layer, second weld pad and solder portion phase of the heat-conducting layer and second flexible circuit board Connection.