CN204119645U - There is the flexible circuit board of the anti-jackknifing structure of circuit - Google Patents
There is the flexible circuit board of the anti-jackknifing structure of circuit Download PDFInfo
- Publication number
- CN204119645U CN204119645U CN201420560871.4U CN201420560871U CN204119645U CN 204119645 U CN204119645 U CN 204119645U CN 201420560871 U CN201420560871 U CN 201420560871U CN 204119645 U CN204119645 U CN 204119645U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- dielectric film
- golden finger
- jackknifing
- circuit
- 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
A kind of flexible circuit board with the anti-jackknifing structure of circuit, it comprises the circuit board matrix made for base material with polyimides or polyester film, described circuit board matrix is printed with circuit and golden finger, and described circuit board matrix is all covered with one deck dielectric film except the position printing golden finger, the side that on wherein said dielectric film, corresponding described circuit is connected with golden finger is provided with wavy edge, and the wave period width of the wavy edge of described dielectric film is not less than width shared by four golden fingers on described circuit board matrix.
Description
Technical field
The utility model relates to the construction applications of printed circuit board, particularly in a kind of flexible circuit board for preventing circuit jackknifing structure.
Background technology
A kind of printed circuit board with height reliability, excellent flexility made that flexible circuit board is is base material with polyimides or polyester film, is called for short soft board or FPC, has the advantages that distribution density is high, lightweight, thickness is thin.Because flexible PCB adopts polyimides or polyester film to be that base material is made, therefore it possesses good flexility, but for whole flexible PCB, such as: some privileged sites of node of via, the golden finger having plated nickel gold, thickness handing-over etc. are because needs are for connecting external circuit, therefore do not covered by dielectric film, remain not resistance to destroy or force to yield, and the strong region of a stress intensity contrast difference can be formed at dielectric film edge.
Golden finger portion structure schematic diagram on a kind of traditional flexible PCB as shown in Figure 1, be that the circuit board matrix (1) made of base material is printed with circuit (2) and golden finger (3) at polyimides or polyester film, and one deck is all covered with for carrying out waterproof to the circuit printed (2) except the upper golden finger (3) except needing to be connected with external circuit of flexible circuit board substrate (1), dust-proof, the dielectric film (4) of the protection such as anti-external force, but as above because golden finger (3) needs to take tactile with external electrical coupler, therefore be exposed to outside dielectric film (4), and the strong and weak line of demarcation of stress intensity is become at the edge (41) of flexible circuit board substrate (1) upper nonconductive Film (4), therefore flexible circuit board substrate (1) is easy to when destroying or force to yield stress form folding line from the edge (41) of dielectric film (4), repeatedly will cause circuit (2) (metal) of printing folding tired and then jackknifing several times.
How to solve this technical problem be the utility model want the direction of research and probe.
Utility model content
The purpose of this utility model is to provide a kind of flexible circuit board with the anti-jackknifing structure of circuit, its technical problem to be solved is: because golden finger needs to take tactile with external electrical coupler on traditional flexible PCB, therefore be exposed to outside dielectric film, and the strong and weak line of demarcation of stress intensity is become at the edge of flexible PCB upper nonconductive Film, therefore flexible PCB is easy to when destroying or force to yield stress form folding line from the edge of dielectric film, repeatedly will cause the folding tired and then jackknifing of printed circuit (metal) several times.
For solving the problems of the technologies described above, the utility model provides a kind of flexible circuit board with the anti-jackknifing structure of circuit, it comprises the circuit board matrix made for base material with polyimides or polyester film, described circuit board matrix is printed with circuit and golden finger, and described circuit board matrix is all covered with one deck dielectric film except the position printing golden finger, the side that on wherein said dielectric film, corresponding described circuit is connected with golden finger is provided with wavy edge.
Be preferable over: the wave period width of the wavy edge of described dielectric film is not less than width shared by four golden fingers on described circuit board matrix.
Compared with prior art, the beneficial effects of the utility model are: dielectric film edge can not form straight line flanging, the strong and weak line of demarcation of stress of causing owing to pasting dielectric film can be become the region of a strong and weak gradual change by corrugated edge, therefore can not form straight line of destroying or force to yield, the golden finger being in dielectric film edge when flexible PCB destroys or force to yield stress can not because stress power obviously causes plastic deformation by jackknifing; And described golden finger position is for during with miscellaneous equipment connecting welding, the waveform at dielectric film edge is easier than linear edge eats tin, and then strengthens weld strength.
Accompanying drawing explanation
Fig. 1 is the structural representation of common a kind of dielectric film embodiment.
Fig. 2 is a kind of dielectric film edge of the present utility model is corrugated example structure schematic diagram.
Embodiment
Below with reference to accompanying drawing 2 and preferred embodiment, a kind of flexible circuit board with the anti-jackknifing structure of circuit that the utility model proposes specifically is illustrated.
The utility model provides a kind of flexible circuit board with the anti-jackknifing structure of circuit, it comprises the circuit board matrix 1 made for base material with polyimides or polyester film, described circuit board matrix 1 is printed with circuit 2 and golden finger 3, and described circuit board matrix 1 is all covered with one deck dielectric film 4 except having printed the position of golden finger 3, the side that on wherein said dielectric film 4, corresponding described circuit 2 is connected with golden finger 3 is provided with wavy edge 5, the strong and weak line of demarcation of stress of causing owing to pasting dielectric film 4 can be become the region of a strong and weak gradual change by corrugated edge 5, therefore straight line of destroying or force to yield can not be formed, the golden finger being in dielectric film 4 edge when described circuit board matrix 1 destroys or force to yield stress can not because stress power obviously causes plastic deformation by jackknifing, and the position of described golden finger 3 is for during with miscellaneous equipment connecting welding, the wavy edge 5 of dielectric film 4 is easier than linear edge eats tin, and then strengthens weld strength.
Preferred embodiment: the wave period width L of the wavy edge 5 of described dielectric film 4 is not less than width a shared by four golden fingers 3 on described circuit board matrix 1, certain wave period width is set to wavy edge 5, the region that the strong and weak line of demarcation of stress of causing owing to pasting dielectric film 4 becomes a strong and weak gradual change is set in best stress dimension width.
Described on comprehensive, the technical solution of the utility model fully effectively can complete above-mentioned utility model object, and structural principle of the present utility model and the principle of work and power are all verified in an embodiment fully, and effect and the object of expection can be reached, and embodiment of the present utility model also can convert according to these principles, therefore, the utility model comprise all in claim mention all replacement contents in scope.Any equivalence change done in the utility model claim, within the scope of the claims of all genus this case applications.
Claims (2)
1. one kind has the flexible circuit board of the anti-jackknifing structure of circuit, it is characterized in that: comprise the circuit board matrix made for base material with polyimides or polyester film, described circuit board matrix is printed with circuit and golden finger, and described circuit board matrix is all covered with one deck dielectric film except the position printing golden finger, the side that on wherein said dielectric film, corresponding described circuit is connected with golden finger is provided with wavy edge.
2. a kind of flexible circuit board with the anti-jackknifing structure of circuit as claimed in claim 1, is characterized in that: the wave period width of the wavy edge of described dielectric film is not less than width shared by four golden fingers on described circuit board matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560871.4U CN204119645U (en) | 2014-09-28 | 2014-09-28 | There is the flexible circuit board of the anti-jackknifing structure of circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560871.4U CN204119645U (en) | 2014-09-28 | 2014-09-28 | There is the flexible circuit board of the anti-jackknifing structure of circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204119645U true CN204119645U (en) | 2015-01-21 |
Family
ID=52336917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560871.4U Expired - Fee Related CN204119645U (en) | 2014-09-28 | 2014-09-28 | There is the flexible circuit board of the anti-jackknifing structure of circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204119645U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104955270A (en) * | 2015-06-22 | 2015-09-30 | 安徽方兴科技股份有限公司 | Flexible printed circuit (FPC) board |
| CN104968139A (en) * | 2015-06-03 | 2015-10-07 | 昆山国显光电有限公司 | FPC bonding structure |
| CN105472876A (en) * | 2015-12-29 | 2016-04-06 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible printed circuit and manufacturing method therefor |
| CN106918938A (en) * | 2017-04-28 | 2017-07-04 | 上海中航光电子有限公司 | A kind of display base plate, its preparation method and display device |
-
2014
- 2014-09-28 CN CN201420560871.4U patent/CN204119645U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968139A (en) * | 2015-06-03 | 2015-10-07 | 昆山国显光电有限公司 | FPC bonding structure |
| CN104955270A (en) * | 2015-06-22 | 2015-09-30 | 安徽方兴科技股份有限公司 | Flexible printed circuit (FPC) board |
| CN105472876A (en) * | 2015-12-29 | 2016-04-06 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible printed circuit and manufacturing method therefor |
| CN106918938A (en) * | 2017-04-28 | 2017-07-04 | 上海中航光电子有限公司 | A kind of display base plate, its preparation method and display device |
| CN106918938B (en) * | 2017-04-28 | 2020-06-16 | 上海中航光电子有限公司 | Display substrate, manufacturing method thereof and display device |
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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: 20150121 Termination date: 20190928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |