CN111031660A - Design method of FPC (Flexible printed Circuit) flat cable - Google Patents
Design method of FPC (Flexible printed Circuit) flat cable Download PDFInfo
- Publication number
- CN111031660A CN111031660A CN201911396896.9A CN201911396896A CN111031660A CN 111031660 A CN111031660 A CN 111031660A CN 201911396896 A CN201911396896 A CN 201911396896A CN 111031660 A CN111031660 A CN 111031660A
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- China
- Prior art keywords
- flat cable
- fpc
- design method
- wave
- printed circuit
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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.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
Abstract
The invention discloses a design method of an FPC (flexible printed circuit) flat cable, belonging to the technical field of circuit boards.
Description
Technical Field
The invention belongs to the technical field of circuit boards, and particularly relates to a design method of an FPC (flexible printed circuit) flat cable.
Background
Consumer electronics product function is more and more, and whole functions can not be realized to inside mainboard of product, and this just needs the polylith mainboard to realize jointly, needs FPC (Flexible Printed Circuit, Flexible Circuit board) winding displacement to be connected between mainboard and the mainboard. When the main board is connected, the fpc (flexible Printed circuit) cable may cause noise leakage and electromagnetic interference due to the problem of the self-reference layer.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the design method of the FPC flat cable is provided, the problem of electromagnetic interference generated by the FPC flat cable can be solved, and the impedance of the FPC flat cable is not changed.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a design method of an FPC (flexible printed circuit) flat cable is characterized in that wave-absorbing coatings are coated on the front surface and the back surface of the FPC flat cable between flat cable pins at two ends.
Further, the wave-absorbing coating is a ferrite coating.
Further, the wave-absorbing coating is directly coated on the surface of the FPC flat cable.
Furthermore, paste layers are arranged on the front surface and the back surface of the FPC flat cable between the flat cable pins, and the wave-absorbing coating is coated on the surfaces, far away from the FPC flat cable, of the paste layers.
After the technical scheme is adopted, the invention has the beneficial effects that:
the design method of the FPC flat cable comprises the FPC flat cable, and the wave absorbing coatings are coated on the front surface and the back surface of the FPC flat cable between the flat cable pins at the two ends, so that the wave absorbing coatings can effectively absorb electromagnetic waves generated by the FPC flat cable, the problem of electromagnetic interference generated by the FPC flat cable is solved, and the impedance of the FPC flat cable cannot be changed.
Drawings
FIG. 1 is a schematic perspective view of a design method of an FPC cable according to the present invention;
FIG. 2 is a top view of the FPC cable design method of the present invention;
FIG. 3 is a side view of the design method of the FPC cable of the present invention;
in the figure, 1-FPC flat cable, 2-flat cable pins and 3-wave absorbing coating.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.
As shown in fig. 1, 2 and 3, a method for designing an FPC flat cable includes coating wave-absorbing coatings 3 on front and back surfaces of the FPC flat cable 1 between flat cable pins 2 at two ends to absorb electromagnetic waves generated by the FPC flat cable 1.
The wave-absorbing coating 3 can be a ferrite coating, and has a good effect of absorbing electromagnetic waves by converting the electromagnetic waves into heat energy. The wave-absorbing coating 3 can also be a magnetic iron nano material coating or a coating of other materials capable of absorbing electromagnetic waves.
As shown in fig. 1, fig. 2 and fig. 3, the wave-absorbing coating 3 can be directly coated on the FPC flat cable 1, or adhesive layers (not shown) can be disposed on the front and back surfaces of the FPC flat cable 1 between the flat cable pins 2 at the two ends, and the wave-absorbing coating 3 is coated on the surface of the adhesive layer away from the FPC flat cable 1.
According to the design method of the FPC flat cable, the wave absorbing coatings are arranged on the front surface and the back surface of the FPC flat cable to effectively absorb electromagnetic waves generated by the FPC flat cable, so that the problem of electromagnetic interference generated by the FPC flat cable is solved, and the impedance of the FPC flat cable cannot be changed.
While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the described embodiments are only some, and not all, of the present invention, which is presented by way of example only, and the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the invention, and these changes and modifications all fall within the scope of the invention.
Claims (4)
1. A design method of an FPC (flexible printed circuit) flat cable is characterized in that wave absorbing coatings are coated on the front surface and the back surface of the FPC flat cable between flat cable pins at two ends.
2. The design method of the FPC flat cable according to claim 1, wherein the wave-absorbing coating is a ferrite coating.
3. The design method of the FPC flat cable according to claim 1, wherein the wave-absorbing coating is directly coated on the surface of the FPC flat cable.
4. The design method of the FPC flat cable according to claim 1, wherein adhesive layers are disposed on the front and back surfaces of the FPC flat cable between the flat cable pins at the two ends, and the wave-absorbing coating is coated on the surface of the adhesive layer away from the FPC flat cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396896.9A CN111031660A (en) | 2019-12-30 | 2019-12-30 | Design method of FPC (Flexible printed Circuit) flat cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396896.9A CN111031660A (en) | 2019-12-30 | 2019-12-30 | Design method of FPC (Flexible printed Circuit) flat cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111031660A true CN111031660A (en) | 2020-04-17 |
Family
ID=70195958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911396896.9A Pending CN111031660A (en) | 2019-12-30 | 2019-12-30 | Design method of FPC (Flexible printed Circuit) flat cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111031660A (en) |
-
2019
- 2019-12-30 CN CN201911396896.9A patent/CN111031660A/en active Pending
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |