CN202435707U - Flexible circuit board - Google Patents
Flexible circuit board Download PDFInfo
- Publication number
- CN202435707U CN202435707U CN2011205304293U CN201120530429U CN202435707U CN 202435707 U CN202435707 U CN 202435707U CN 2011205304293 U CN2011205304293 U CN 2011205304293U CN 201120530429 U CN201120530429 U CN 201120530429U CN 202435707 U CN202435707 U CN 202435707U
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- CN
- China
- Prior art keywords
- circuit board
- electric circuit
- base material
- flexible electric
- face
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- 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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- Structure Of Printed Boards (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Abstract
The utility model discloses a flexible circuit board which is provided with a bending area. The bending area comprises a base material which comprises a first face and a second face, a press connection finger is arranged on the first face of the base material, a line layer is arranged at one end of the second face of the base material and provided with a first coverage film, and a second coverage film is disposed at the other end of the second face of the base material. According to the flexible circuit board, the second coverage film serving as a reinforcing piece is adhered to the second face of the base material, so that under the condition that prior flexibility of the flexible circuit board is not destroyed, stable dimension swelling and flat flexibility of a double-face or multi-layer flexible printed circuit are guaranteed when the finger is subjected to press connection.
Description
Technical field
The utility model belongs to electronic technology field, relates in particular to a kind of flexible electric circuit board.
Background technology
Flexible electric circuit board (FPC) has that distribution density is high, in light weight, the characteristics of thin thickness, but simultaneously because its free bend, be prone to foldingly, is connected integratedly with lead thereby reach component arrangement, in electronic component, has played pivotal role; At present, use in many products such as mobile phone, notebook computer, PDA, digital camera, LCM.
After FPC linked with PCB or face glass, FPC was normally sweeping, promptly; FPC has a bending district, and please with reference to Fig. 1, shown in Figure 1 is flexible electric circuit board bending district sketch map in the prior art; The bending district of flexible electric circuit board comprises base material 4; Said base material 4 comprises first and second, and first face of said base material 4 is provided with crimping finger 1, is pasted with coverlay 2 on the crimping finger 1; Also be provided with coverlay 2 on second of said base material 4, coverlay 2 and the base material 4 middle line layers 3 that are provided with.The coverlay 2 that 1 upper strata is pointed in crimping does not receive the erosion of dust, moisture, chemicals in order to guarantee flexible electric circuit board, while and exterior insulation.
Yet the design of flexible electric circuit board often receives the restriction of the factors such as crimp region heat conduction of flexible circuit plate thickness and finger; In addition, consider the crooked and flexible of flexible electric circuit board, the crimp region of most flexible electric circuit boards is designed to the single sided board structure.But for the FPC of two-sided or multilayer, the single sided board structure is impossible realize, therefore how to make two-sided or the multi-layer flexible circuit board obtains more stable size harmomegathus peace elasticity and becomes the prior art problem demanding prompt solution when the finger crimping.
The utility model content
The purpose of the utility model is to provide a kind of can obtain the more stable flexible flexible electric circuit board of size harmomegathus peace when the finger crimping.
For solving the problems of the technologies described above, the utility model provides a kind of flexible electric circuit board, and said flexible electric circuit board is provided with a bending district; Said bending district comprises base material; Said base material comprises first and second, and first face of said base material is provided with the crimping finger, and an end of second of said base material is provided with line layer; Said line layer is provided with first coverlay, and second the other end of said base material is provided with second coverlay.
Preferable, said crimping finger upper strata is provided with coverlay.
Preferable, said crimping finger upper strata is printed on printing ink.
Preferable, said printing ink is thermo-cured ink.
Preferable, said crimping finger is different side's conducting resinl crimping finger.
Preferable, said crimping finger is different side's conducting film crimping finger.
Preferable, said flexible electric circuit board is the multi-layer flexible circuit board.
Preferable, said flexible electric circuit board is the double-faced flexible circuit board.
The utility model is employed in the one side of base material and pastes second coverlay as reinforcing chip, is not destroying under the original flexible situation of flexible electric circuit board, has guaranteed two-sided or multi-layer FPC stable size harmomegathus peace elasticity when the finger crimping.
Description of drawings
Fig. 1 is a flexible electric circuit board bending district generalized section in the prior art;
Fig. 2 is the utility model one specific embodiment flexible electric circuit board bending district vertical view;
Fig. 3 is the utility model one specific embodiment flexible electric circuit board bending district generalized section.
Embodiment
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the embodiment of the utility model is done detailed explanation below in conjunction with accompanying drawing.
The utility model provides a kind of flexible electric circuit board, and please with reference to Fig. 2 and combine Fig. 3, flexible electric circuit board is provided with a bending district; The bending district comprises base material 14; Said base material 14 comprises first and second, and said first face is provided with crimping finger 11, and an end of second of said base material 14 is provided with line layer 13; Line layer 13 is provided with first coverlay 15, and second the other end of said base material 14 is provided with second coverlay 16.
The general material of flexible electric circuit board is all very thin, thereby also performance very soft, but because of flexible electric circuit board such as crimping finger position often need plug, needs certain intensity, just has to strengthen.Use second coverlay 16 to do general reinforcement, can solve crimping finger end regions planarization, and can not have influence on the crimping temperature of crimping finger.Second coverlay 16 preferably is made up of Polyimide (polyimides) and the adhesive (adhesive) that is coated on the polyimide film.The gross thickness of conventional coverlay is 27.5 μ m, 37.5 μ m or 50 μ m, and wherein, the conventional gauge thickness of Polyimide is 12.5 μ m or 25 μ m, and the conventional gauge thickness of adhesive is 15 μ m or 25 μ m.Under the flexible circuit plate thickness allows; Can use original coverlay thickness in the flexible electric circuit board or use coverlay than original coverlay thin thickness; For example, first coverlay, 15 thickness are 50 μ m, and then second coverlay, 16 thickness can be 50 μ m; Also can be 27.5 μ m or 37.5 μ m, the utility model contrast will not limit.
Preferable, crimping finger 11 is provided with the 3rd coverlay 12, the three coverlays 12 sizes according to the definition of client's crimping finger width, and industry is selected for use about width 2.0mm usually.In addition, the 3rd coverlay 12 on the crimping finger 11 also can replace with printing ink, for example is thermo-cured ink.
Need to prove; Crimping finger 11 has a polytype because its material is different with welding manner; Like the molten tin crimping finger of hot pressing, ACF (different side's conducting film) crimping finger, ACP (different side's conducting resinl) crimping finger etc., the utility model is a priority option with ACF crimping finger.
Wherein, the described flexible electric circuit board of the utility model is applicable to the flexible electric circuit board of multilayer, also applicable to the double-faced flexible circuit board.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim example change and modify, and all should belong to the utility model claim covering scope.
Claims (8)
1. a flexible electric circuit board is characterized in that, said flexible electric circuit board is provided with a bending district; Said bending district comprises base material; Said base material comprises first and second, and first face of said base material is provided with the crimping finger, and an end of second of said base material is provided with line layer; Said line layer is provided with first coverlay, and second the other end of said base material is provided with second coverlay.
2. flexible electric circuit board as claimed in claim 1 is characterized in that, said crimping finger is provided with the 3rd coverlay.
3. flexible electric circuit board as claimed in claim 1 is characterized in that, is printed on printing ink on the said crimping finger.
4. flexible electric circuit board as claimed in claim 3 is characterized in that, said printing ink is thermo-cured ink.
5. flexible electric circuit board as claimed in claim 4 is characterized in that, said crimping finger is different side's conducting resinl crimping finger.
6. flexible electric circuit board as claimed in claim 4 is characterized in that, said crimping finger is different side's conducting film crimping finger.
7. flexible electric circuit board as claimed in claim 1 is characterized in that, said flexible electric circuit board is the multi-layer flexible circuit board.
8. flexible electric circuit board as claimed in claim 1 is characterized in that, said flexible electric circuit board is the double-faced flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205304293U CN202435707U (en) | 2011-12-16 | 2011-12-16 | Flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205304293U CN202435707U (en) | 2011-12-16 | 2011-12-16 | Flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435707U true CN202435707U (en) | 2012-09-12 |
Family
ID=46785108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205304293U Expired - Fee Related CN202435707U (en) | 2011-12-16 | 2011-12-16 | Flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113260174A (en) * | 2021-04-12 | 2021-08-13 | 深圳市景旺电子股份有限公司 | Pattern electroplating method of FPC board |
-
2011
- 2011-12-16 CN CN2011205304293U patent/CN202435707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113260174A (en) * | 2021-04-12 | 2021-08-13 | 深圳市景旺电子股份有限公司 | Pattern electroplating method of FPC board |
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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: 20120912 Termination date: 20201216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |