CN204836767U - Flexible circuit board - Google Patents
Flexible circuit board Download PDFInfo
- Publication number
- CN204836767U CN204836767U CN201520333068.1U CN201520333068U CN204836767U CN 204836767 U CN204836767 U CN 204836767U CN 201520333068 U CN201520333068 U CN 201520333068U CN 204836767 U CN204836767 U CN 204836767U
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- CN
- China
- Prior art keywords
- golden finger
- kink
- line layer
- flexible pcb
- reverse side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a flexible circuit board, it includes the substrate, the the first line layer, first golden finger, the second line layer and second golden finger, the first line layer and the second line layer set up respectively in the front and the reverse side of substrate, first golden finger set up in the substrate openly and one end be connected with the the first line layer, the second golden finger sets up in the reverse side, the length of first golden finger is less than the length of second golden finger, make first golden finger and the dislocation of second golden finger, thereby make first golden finger, the second golden finger forms two cascaded surfaces on the substrate, in order to reduce the flexible circuit board concentrated stress that the in -process produced of buckling, the anti stress intensity of flexible circuit board welding ends has been strengthened. And such dislocation processing can reduce the welded processing degree of difficulty to the possibility of golden finger rupture when reducing the welding has improved product welding yield.
Description
Technical field
The utility model relates to circuit board technology field, particularly relates to a kind of flexible PCB.
Background technology
Along with the progress and development of science and technology, integrated circuit is widely used in technical field of electronic communication, and has had larger improvement.In order to adapt to the development of present touch-screen (such as mobile phone, palmtop PC etc.) toward frivolous direction, flexible PCB arises at the historic moment.
Flexible PCB (FlexiblePrintedCircuit, FPC) is that the one made for base material with polyimides or polyester film has height reliability, excellent flexible printed circuit.But traditional flexible PCB is in bending process, and golden finger area easily fractures, and causes the phenomenons such as loose contact.
Utility model content
Based on this, be necessary for above-mentioned technical problem, provide a kind of guarantee fund to point the flexible PCB of not frangibility.
A kind of flexible PCB, comprising:
Base material, comprises front and the reverse side back on described front, described base material offers the first through hole and the second through hole that run through described front and described reverse side;
First line layer, is arranged at described front;
First golden finger, is arranged at described front, and one end is connected with described first line layer;
Second line layer, is arranged at described reverse side, and described second line layer is electrically connected with described first line layer by described first through hole; And
Second golden finger, is arranged at described reverse side, and described second golden finger is electrically connected with described first golden finger by described second through hole;
Wherein, the length of described first golden finger is less than the length of described second golden finger.
Wherein in an embodiment, described base material comprises body, the first kink and the second kink, and the two ends of described first kink connect described body and described second kink respectively.
Wherein in an embodiment, described first line layer extends to described second kink along described body via described first kink, and described first golden finger is arranged on described second kink.
Wherein in an embodiment, described second line layer is arranged on described body, and described second golden finger is arranged on described second kink.
Wherein in an embodiment, the junction of described first kink and described body is provided with rounding.
Wherein in an embodiment, the junction of described first kink and described second kink is provided with rounding.
Wherein in an embodiment, the junction of described first line layer and described second line layer is provided with tear.
Wherein in an embodiment, the end that described first golden finger is not connected with described first line layer stretches out in described second kink.
Wherein in an embodiment, one end that described second golden finger is corresponding with described first golden finger stretches out in described second kink, and the partial stack that the part that described second golden finger stretches out in described second kink and described first golden finger stretch out in described second kink is arranged.
Wherein in an embodiment, the surface of described first line layer and the second line layer is provided with coverlay.
Above-mentioned flexible PCB at least has the following advantages:
Because the length of first golden finger in flexible PCB front is less than the length of the second golden finger of reverse side, first golden finger and the second golden finger are misplaced, thus make the first golden finger, the second golden finger on base material, form two cascaded surfaces, to reduce the concentrated stress produced in flexible PCB bending process, enhance the resistance to stress intensity of flexible PCB welding ends.And such dislocation process can reduce the difficulty of processing of welding, thus the possibility that when reducing welding, golden finger fractures, improve Product jointing yield.
Accompanying drawing explanation
Fig. 1 is the front view of flexible PCB in an execution mode;
Fig. 2 is the rearview of flexible PCB shown in Fig. 1;
Fig. 3 is the partial sectional view of flexible PCB shown in Fig. 2.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the utility model.But the utility model can be much different from alternate manner described here to implement, those skilled in the art can when doing similar improvement without prejudice to when the utility model intension, and therefore the utility model is by the restriction of following public concrete enforcement.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique execution mode.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Referring to Fig. 1 and Fig. 2, is the flexible PCB 10 in an execution mode.This flexible PCB 10 comprises base material 100, first line layer 200, first golden finger 300, second line layer 400 and the second golden finger 500.
The material of base material 100 is generally polyimides or polyester film, has stronger pliability and bending property.The reverse side 100b that base material 100 comprises front 100a and arranges back on front 100a.The front 100a of base material 100 is solder side, and reverse side 100b is non-solder face.Base material 100 offers the first through hole (not shown) and the second through hole (not shown) of passed through said front surface 100a and reverse side 100b.The quantity of the first through hole (not shown) and the second through hole (not shown) can set according to actual needs.
Particularly, the two ends that base material 100 comprises body 110, first kink 120 and the second kink 130, first kink 120 connect body 110 and the second kink 130 respectively.Specific in present embodiment, the first kink 120 is vertical with described body 110 to be arranged, and the second kink 130 is vertical with described first kink 120 to be arranged, and body 110 and the second kink 130 be arranged in parallel.Certainly, in other embodiments, body 110, first kink 120 and the second kink 130 angulation also can be other angle, such as, be acute angle or obtuse angle etc.
Specific in present embodiment, the first kink 120 is provided with rounding with the junction of body 110, and the scope of the radius R 1 of this rounding is 0.2mm ~ 1mm.The junction of the second kink 130 and the first kink 120 is provided with rounding, and the scope of the radius R 2 of this rounding is 0.2mm ~ 0.5mm.
First line layer 200 is arranged at the front 100a of base material 100, and first line layer 200 can lead to overetched mode and be formed.First line layer 200 is along body 110 and extend to the second kink 130 via the first kink 120.The surface of first line layer 200 is provided with coverlay (not shown), exposes to avoid first line layer 200.
First golden finger 300 is also arranged at the front 100a of base material 100, and its one end is connected with first line layer 200.First golden finger 300 is positioned on the second kink 130, and the end that the first golden finger 300 is not connected with first line layer 200 stretches out in the second kink 130.
Second line layer 400 is arranged at the reverse side 100b of base material 100, and the second line layer 400 is electrically connected with first line layer 200 by the first through hole.Second line layer 400 is positioned on body 110.Particularly, tear 600 can be set at first line layer 200 and the second line layer 400 junction, to play the object adding thick circuit, improve circuit breaking phenomenon.Particularly, the diameter range of tear 600 can be 0.05 ~ 0.15mm, such as, can be 0.1mm.The surface of the second line layer 400 is provided with coverlay (not shown), exposes to avoid the second line layer 400.
Second golden finger 500 is arranged at the reverse side 100b of base material 100, and the second golden finger 500 is electrically connected with the first golden finger 300 by the second through hole.Particularly, the second golden finger 500 is positioned on the second kink 130.One end that second golden finger 500 is corresponding with the first golden finger 300 stretches out in the second kink 130, the partial stack that the part that second golden finger 500 stretches out in the second kink 130 and the first golden finger 300 stretch out in the second kink 130 is arranged, and the length of its overlapping portion can be equal.
See also Fig. 3, specific in present embodiment, the length L1 of the first golden finger 300 is less than the length L2 of the second golden finger 500.Particularly, the length L1 of the first golden finger 300 0.2mm ~ 0.5mm less of the length L2 of the second golden finger 500.First golden finger 300 and the second golden finger 500 are string configuration.
Above-mentioned flexible PCB 10 at least has the following advantages:
Because the length of first golden finger 300 of flexible PCB 10 front 100a is less than the length of second golden finger 500 of reverse side 100b, first golden finger 300 and the second golden finger 500 are misplaced, thus make the first golden finger 300, second golden finger 500 form two cascaded surfaces 700 on base material 100, to reduce the concentrated stress produced in flexible PCB 10 bending process, enhance the resistance to stress intensity of flexible PCB 10.And such dislocation process can reduce the difficulty of processing of welding, thus the possibility that when reducing welding, golden finger fractures, improve Product jointing yield.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a flexible PCB, is characterized in that, comprising:
Base material, comprises front and the reverse side back on described front, described base material offers the first through hole and the second through hole that run through described front and described reverse side;
First line layer, is arranged at described front;
First golden finger, is arranged at described front, and one end is connected with described first line layer;
Second line layer, is arranged at described reverse side, and described second line layer is electrically connected with described first line layer by described first through hole; And
Second golden finger, is arranged at described reverse side, and described second golden finger is electrically connected with described first golden finger by described second through hole;
Wherein, the length of described first golden finger is less than the length of described second golden finger.
2. flexible PCB according to claim 1, is characterized in that, described base material comprises body, the first kink and the second kink, and the two ends of described first kink connect described body and described second kink respectively.
3. flexible PCB according to claim 2, is characterized in that, described first line layer extends to described second kink along described body via described first kink, and described first golden finger is arranged on described second kink.
4. flexible PCB according to claim 2, is characterized in that, described second line layer is arranged on described body, and described second golden finger is arranged on described second kink.
5. flexible PCB according to claim 2, is characterized in that, the junction of described first kink and described body is provided with rounding.
6. flexible PCB according to claim 2, is characterized in that, the junction of described first kink and described second kink is provided with rounding.
7. flexible PCB according to claim 1, is characterized in that, the junction of described first line layer and described second line layer is provided with tear.
8. flexible PCB according to claim 2, is characterized in that, the end that described first golden finger is not connected with described first line layer stretches out in described second kink.
9. flexible PCB according to claim 8, it is characterized in that, one end that described second golden finger is corresponding with described first golden finger stretches out in described second kink, and the partial stack that the part that described second golden finger stretches out in described second kink and described first golden finger stretch out in described second kink is arranged.
10. flexible PCB according to claim 1, is characterized in that, the surface of described first line layer and described second line layer is provided with coverlay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333068.1U CN204836767U (en) | 2015-05-21 | 2015-05-21 | Flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333068.1U CN204836767U (en) | 2015-05-21 | 2015-05-21 | Flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204836767U true CN204836767U (en) | 2015-12-02 |
Family
ID=54694316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520333068.1U Expired - Fee Related CN204836767U (en) | 2015-05-21 | 2015-05-21 | Flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204836767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887649A (en) * | 2017-12-06 | 2019-06-14 | 贝尔威勒电子（昆山）有限公司 | Bendable high frequency connecting line, high frequency connection circuit board composition and electric connector combination |
-
2015
- 2015-05-21 CN CN201520333068.1U patent/CN204836767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887649A (en) * | 2017-12-06 | 2019-06-14 | 贝尔威勒电子（昆山）有限公司 | Bendable high frequency connecting line, high frequency connection circuit board composition and electric connector combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |