CN204836769U - Flexible circuit board - Google Patents
Flexible circuit board Download PDFInfo
- Publication number
- CN204836769U CN204836769U CN201520365852.0U CN201520365852U CN204836769U CN 204836769 U CN204836769 U CN 204836769U CN 201520365852 U CN201520365852 U CN 201520365852U CN 204836769 U CN204836769 U CN 204836769U
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- China
- Prior art keywords
- golden finger
- base material
- line layer
- windowing
- flexible pcb
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Abstract
The utility model provides a flexible circuit board includes the substrate, the the first line layer, first golden finger, first cover membrane, the the second line layer, second golden finger and second cover membrane, the substrate has front and reverse side, the first line layer and first golden finger set up in the front, first cover membrane sets up in positive in order to cover the the first line layer, first cover is epimembranal sets up first windowing in order to expose first golden finger, the second line layer and second golden finger set up in the reverse side, the second covers the membrane and sets up in the reverse side in order to cover the the second line layer, the second covers the epimembranal second of seting up and windows in order to expose the second golden finger, because the first width imbalance of windowing with the second of windowing forms to stagger and sets up the mode, therefore, it is first that window and kept first cover membrane to the part or second cover membrane is not dug up staggering of windowing of second, the thickness of this department has been increased, consequently, can improve this intensity of locating, thereby avoid exposing in first golden finger of windowing, expose that the second golden finger of windowing in the second is easy is broken.
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 the front of the traditional flexible PCB area of windowing with reverse side of windowing is the same large, can affect the intensity of flexible PCB like this, easily causes and point pad herein and fracture, affect product function.
Utility model content
Based on this, be necessary for above-mentioned technical problem, provide a kind of intensity that can improve to avoid finger pad by the flexible PCB fractureed.
A kind of flexible PCB, comprising:
Base material, the reverse side comprising front and arrange back on described front;
First line layer, is arranged at the front of described base material;
First golden finger, is arranged at the front of described base material, and one end is electrically connected with described first line layer;
First coverlay, is arranged at the front of described base material, and described first line layer is capped, and described first coverlay offers first and windows, described first windows makes described first golden finger expose;
Second line layer, is arranged at the reverse side of described base material, and is electrically connected with described first line layer;
Second golden finger, is arranged at the reverse side of described base material, and is electrically connected with described first golden finger; And
Second coverlay, is arranged at the reverse side of described base material, and described second line layer is capped, and described second coverlay offers second and windows, described second windows makes described second golden finger expose;
Wherein, described first window and to arrange to stagger with described second width of windowing is unequal.
Wherein in an embodiment, described first windows and the described second edge of windowing the same orientation being opened in described first coverlay and described second coverlay respectively, and described second width of windowing is greater than described first width of windowing, windows to window with described first to make described second and mutually stagger.
Wherein in an embodiment, described second width of windowing is than the large 0.25 ~ 0.35mm of described first width of windowing.
Wherein in an embodiment, the reverse side of described base material is also provided with double faced adhesive tape.
Wherein in an embodiment, the length of described double faced adhesive tape is greater than the length of described base material.
Wherein in an embodiment, the two ends of described double faced adhesive tape exceed described base material more than edge 0.5mm respectively.
Wherein in an embodiment, the junction of described first golden finger and described first line layer is also provided with tear.
Wherein in an embodiment, the length of described tear is more than 0.35mm.
Wherein in an embodiment, the length of described first golden finger exceeds the edge of described base material.
Wherein in an embodiment, the length of described second golden finger exceeds the edge of base material.
Above-mentioned flexible PCB at least has the following advantages:
Base material comprises front and reverse side, first coverlay is arranged at the front of base material, first coverlay offers first to window the first golden finger is exposed, second coverlay is arranged at the reverse side of base material, second coverlay offers second to window the second golden finger is exposed, because first windows the set-up mode that to stagger with the unequal formation of the second width of windowing, therefore, the part that staggers that first windows windows with second remains the first coverlay or the second coverlay is not dug up, increase the thickness at this place, therefore, it is possible to improve the intensity at this place, thus avoid exposing to the first first golden finger of windowing, expose to the second second golden finger of windowing easily to be fractureed.
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 front view of base material in Fig. 1.
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 to Fig. 3, 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, first coverlay 400, second line layer 500, second golden finger 600 and the second coverlay 700.
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.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.
First line layer 200 is arranged at the front 100a of base material 100.First line layer 200 can lead to overetched mode and be formed.
First golden finger 300 is arranged at the front 100a of base material 100, and one end is electrically connected with first line layer 200.Particularly, at the first golden finger 300, tear 800 can be set with the junction of first line layer 200, holes of holing can be avoided, thus avoid causing liquid medicine to stagnate during etching in order to avoid cross erosion.The length of tear 800 can be more than 0.35mm.After adding tear 800, boring and etching yield can promote more than 10%.
First coverlay 400 is arranged at the front 100a of base material 100, and first line layer 200 is capped.First coverlay 400 offers first to window and 410, the first window and 410 first golden finger 300 is exposed.
Second line layer 500 is arranged at the reverse side 100b of base material 100, and is electrically connected with first line layer 200.Particularly, the second line layer 500 can be electrically connected with first line layer 200 by the first through hole.Second line layer 500 can lead to overetched mode and be formed.
Second golden finger 600 is arranged at the reverse side 100b of base material 100, and is electrically connected with the first golden finger 300.Such as, the second golden finger 600 can be electrically connected with the first golden finger 300 by the second through hole.
The length of the first golden finger 300 exceeds the edge of base material 100, and the length of the second golden finger 600 also exceeds the edge of base material 100, and therefore the first golden finger 300 and the second golden finger 600 partly overlap, and is conducive to avoiding the first golden finger 300 to come off from base material 100.
Second coverlay 700 is arranged at the reverse side 100b of base material 100, and the second line layer 500 is capped.Second coverlay 700 offers second to window and 710, the second window and 710 second golden finger 600 is exposed.
Wherein, first window 410 and second window 710 width unequally to arrange to stagger.Specific in present embodiment, first windows 410 and second to window 710 edges being opened in the same orientation of the first coverlay 400 and the second coverlay 700, and second window 710 width D 2 be greater than first window 410 width D 1, window to make second and 710 and first window and 410 mutually to stagger.Particularly, second window 710 width D 2 to the first window 410 the large 0.25 ~ 0.35mm of width D 1.Certainly, in other embodiments, can also first window 410 width be greater than second window 710 width.
Specific in present embodiment, the reverse side 100b of base material 100 is also provided with double faced adhesive tape 900, to be fixed on outer member by flexible PCB 10.The length of double faced adhesive tape 900 is greater than the length of base material 100.Particularly, the two ends of double faced adhesive tape 900 exceed base material more than frontside edge 0.5mm respectively, reduce rubberizing operation easier, thus enhance productivity.
Above-mentioned flexible PCB 10 at least has the following advantages:
Base material 100 comprises front 100a and reverse side 100b, first coverlay 400 is arranged at the front 100a of base material 100, first coverlay 400 offers first to window and 410 first golden finger 300 is exposed, second coverlay 700 is arranged at the reverse side 100b of base material 100, second coverlay 700 offers second to window and 710 second golden finger 600 is exposed, due to first window 410 and second window 710 the unequal formation of width to stagger set-up mode, therefore, first window 410 and second window 710 the part that staggers remain the first coverlay 400 or the second coverlay 700 is not dug up, increase the thickness at this place, therefore, it is possible to improve the intensity at this place, thus avoid exposing to first window 410 the first golden finger 300, expose to second window 710 the second golden finger 600 easily fractureed.
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, the reverse side comprising front and arrange back on described front;
First line layer, is arranged at the front of described base material;
First golden finger, is arranged at the front of described base material, and one end is electrically connected with described first line layer;
First coverlay, is arranged at the front of described base material, and described first line layer is capped, and described first coverlay offers first and windows, described first windows makes described first golden finger expose;
Second line layer, is arranged at the reverse side of described base material, and is electrically connected with described first line layer;
Second golden finger, is arranged at the reverse side of described base material, and is electrically connected with described first golden finger; And
Second coverlay, is arranged at the reverse side of described base material, and described second line layer is capped, and described second coverlay offers second and windows, described second windows makes described second golden finger expose;
Wherein, described first window and to arrange to stagger with described second width of windowing is unequal.
2. flexible PCB according to claim 1, it is characterized in that, described first windows and the described second edge of windowing the same orientation being opened in described first coverlay and described second coverlay respectively, and described second width of windowing is greater than described first width of windowing, windows to window with described first to make described second and mutually stagger.
3. flexible PCB according to claim 2, is characterized in that, described second width of windowing is than the large 0.25 ~ 0.35mm of described first width of windowing.
4. flexible PCB according to claim 1, is characterized in that, the reverse side of described base material is also provided with double faced adhesive tape.
5. flexible PCB according to claim 4, is characterized in that, the length of described double faced adhesive tape is greater than the length of described base material.
6. flexible PCB according to claim 5, is characterized in that, the two ends of described double faced adhesive tape exceed described base material more than edge 0.5mm respectively.
7. flexible PCB according to claim 1, is characterized in that, the junction of described first golden finger and described first line layer is also provided with tear.
8. flexible PCB according to claim 7, is characterized in that, the length of described tear is more than 0.35mm.
9. flexible PCB according to claim 1, is characterized in that, the length of described first golden finger exceeds the edge of described base material.
10. flexible PCB according to claim 1, is characterized in that, the length of described second golden finger exceeds the edge of base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365852.0U CN204836769U (en) | 2015-05-29 | 2015-05-29 | Flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365852.0U CN204836769U (en) | 2015-05-29 | 2015-05-29 | Flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204836769U true CN204836769U (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365852.0U Expired - Fee Related CN204836769U (en) | 2015-05-29 | 2015-05-29 | Flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204836769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306351A (en) * | 2017-11-28 | 2018-07-20 | 青岛海信电器股份有限公司 | A kind of charging unit and electronics mobile terminal |
| CN112996286A (en) * | 2021-02-26 | 2021-06-18 | 武汉华工正源光子技术有限公司 | Golden finger outgoing line design method based on SFP + series optical modules |
-
2015
- 2015-05-29 CN CN201520365852.0U patent/CN204836769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306351A (en) * | 2017-11-28 | 2018-07-20 | 青岛海信电器股份有限公司 | A kind of charging unit and electronics mobile terminal |
| CN108306351B (en) * | 2017-11-28 | 2022-05-31 | 海信视像科技股份有限公司 | Charging device and electronic mobile terminal |
| CN112996286A (en) * | 2021-02-26 | 2021-06-18 | 武汉华工正源光子技术有限公司 | Golden finger outgoing line design method based on SFP + series optical modules |
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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: 20160529 |