CN211531414U - Flexible circuit board - Google Patents
Flexible circuit board Download PDFInfo
- Publication number
- CN211531414U CN211531414U CN201922272488.4U CN201922272488U CN211531414U CN 211531414 U CN211531414 U CN 211531414U CN 201922272488 U CN201922272488 U CN 201922272488U CN 211531414 U CN211531414 U CN 211531414U
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- CN
- China
- Prior art keywords
- circuit
- via hole
- circuit board
- conductor
- lower floor
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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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- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The utility model provides a flexible circuit board contains: the base material board, be fixed in the upper circuit and the lower floor's circuit of base material board, and run through in the surface of upper circuit and the via hole on the surface of lower floor's circuit, contain the electric conductor in the via hole, upper circuit passes through the electric conductor electricity with lower floor's circuit and is connected, and upper circuit includes at least: upper transmission portion and the upper connection portion of being connected with upper transmission portion electricity, lower floor's circuit includes at least: the upper layer connecting part and the lower layer connecting part respectively cover two sides of the same part of the substrate plate to form a circuit board connecting part; the circuit board connecting part is provided with at least two conducting holes, and the upper layer circuit is electrically connected with the lower layer circuit through a conductor in the conducting holes. The utility model discloses a plurality of conducting holes can prevent that the conducting hole from damaging the electricity that leads to upper circuit and lower floor's circuit and being connected and block, have improved the reliability that upper circuit and lower floor's circuit switched on.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a flexible circuit board conducting hole field especially relates to a flexible circuit board.
[ background of the invention ]
FPC (Flexible Printed Circuit) is generally classified into a double-sided board or a multi-sided board in design. Specifically, the flexible circuit board is composed of an upper layer circuit, a lower layer circuit and a base material board, wherein the upper layer circuit and the lower layer circuit are respectively arranged on the front side and the back side of the base material board and are electrically connected through the upper layer circuit and the lower layer circuit, so that a loop is formed.
In the prior art, a via hole is symmetrically formed on each of the front and back surfaces of a substrate, so that an upper layer circuit and a lower layer circuit are electrically connected through the via hole to form a loop. However, in the manufacturing process, the via hole may be easily damaged or partially broken due to impurities such as residual glue and foreign matter existing in the via hole, which may result in that the upper and lower layer circuits cannot be connected or may have a reliability risk.
Therefore, there is a need to provide a new flexible circuit board.
[ summary of the invention ]
An object of the utility model is to provide a flexible circuit board to solve among the prior art conducting hole destroy easily or local hole is broken and is leaded to the technical problem that the lower floor circuit can't switch on.
The technical scheme of the utility model as follows: a flexible circuit board, comprising: the utility model provides a substrate board, be fixed in the upper circuit on a substrate board surface, be fixed in with the upper circuit back of the body mutually lower floor's circuit on another surface of substrate board, and run through in the surface of upper circuit and the via hole on the surface of lower floor's circuit, contain the electric conductor in the via hole, upper circuit with lower floor's circuit passes through in the via hole the electric conductor electricity is connected, upper circuit includes at least: upper transmission portion and with the upper connecting portion that upper transmission portion electricity is connected, lower floor's circuit includes at least: the upper layer connecting part and the lower layer connecting part respectively cover two surfaces of the same part of the substrate plate to form a circuit board connecting part;
the circuit board connecting part is provided with at least two conducting holes, and the upper layer circuit is electrically connected with the lower layer circuit through a conductor in the conducting holes.
Optionally, the circuit board connecting portion is provided with at least 2 via holes.
Optionally, the via hole is provided with a first via hole and a second via hole, and the first via hole and the second via hole are arranged on the same horizontal line extending and connecting from the circuit board connecting portion to the upper circuit.
Optionally, the conductor is attached to the sidewall of the via hole, one end of the conductor vertically penetrates through the surface of the lower circuit from the surface of the upper circuit, one end of the conductor is electrically connected to the upper circuit, and the other end of the conductor is electrically connected to the lower circuit.
Optionally, the conductor is a cylindrical conductive ring, and an outer side surface of the conductive ring is attached to a side wall of the via hole.
Optionally, the conductive body is a strip conductive strip, and one side of the conductive strip is attached to the sidewall of the via hole.
Optionally, the conductor is made of a copper material.
The beneficial effects of the utility model reside in that: there is provided a flexible circuit board including: the utility model provides a substrate board, be fixed in the upper circuit on a substrate board surface, be fixed in with the upper circuit back of the body mutually lower floor's circuit on another surface of substrate board, and run through in the surface of upper circuit and the via hole on the surface of lower floor's circuit, contain the electric conductor in the via hole, upper circuit with lower floor's circuit passes through in the via hole the electric conductor electricity is connected, upper circuit includes at least: upper transmission portion and with the upper connecting portion that upper transmission portion electricity is connected, lower floor's circuit includes at least: the upper layer connecting part and the lower layer connecting part respectively cover two surfaces of the same part of the substrate plate to form a circuit board connecting part; the circuit board connecting part is provided with at least two conducting holes, and the upper layer circuit is electrically connected with the lower layer circuit through a conductor in the conducting holes. Through be in the circuit board connecting portion of flexible circuit board sets up a plurality ofly the via hole can prevent the via hole damage leads to the upper circuit with the electric connection of lower floor's circuit is blocked, has improved the upper circuit with the reliability that lower floor's circuit switched on.
[ description of the drawings ]
Fig. 1 is a schematic view of a front structure of a flexible printed circuit board according to the present invention;
fig. 2 is a schematic view of a back structure of a flexible printed circuit board according to the present invention;
fig. 3 is a partial enlarged view of the front structural diagram of the flexible printed circuit board of the present invention;
fig. 4 is a partial enlarged view of the back structure schematic diagram of the flexible circuit board of the present invention.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings and embodiments.
An object of the utility model is to provide a flexible circuit board to solve among the prior art conducting hole destroy easily or local hole is broken and is leaded to the technical problem that the lower floor circuit can't switch on.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a schematic diagram of a front structure of a flexible circuit board, fig. 2 is a schematic diagram of a back structure of a flexible circuit board, fig. 3 is a partial enlarged view of a schematic diagram of a front structure of a flexible circuit board, and fig. 4 is a partial enlarged view of a schematic diagram of a back structure of a flexible circuit board.
The technical scheme of the utility model as follows: a flexible circuit board, comprising: base material board 11, be fixed in the upper strata circuit 12 of base material board 11 one surface, be fixed in the lower floor circuit 13 of base material board 11 another surface that is the back of the body with upper circuit 12, and run through in the surface of upper strata circuit 12 and the via hole 14 on the surface of lower floor circuit 13, contain the electric conductor in the via hole 14, upper strata circuit 12 is connected through the electric conductor in the via hole 14 with lower floor circuit 13, upper strata circuit 12 includes at least: an upper transmission part 121 and an upper connection part 122 electrically connected to the upper transmission part 121, wherein the lower circuit 13 at least includes: a lower transmission part 131 and a lower connection part 132 electrically connected to the lower transmission part 131, wherein the upper connection part 122 and the lower connection part 132 respectively cover both sides of the same part of the substrate 11 to form a circuit board connection part;
the circuit board connecting part is provided with at least two through holes 14, and the upper layer circuit 12 and the lower layer circuit 13 are electrically connected through a conductor in the through holes 14.
In an embodiment of the present invention, the flexible circuit board includes: substrate board 11, be located upper circuit 12 and the lower floor circuit 13 of substrate board 11 positive and negative, upper layer connecting portion 122 of upper circuit and lower floor's connecting portion 132 of lower floor circuit cover the two sides at the same position of substrate board 11 respectively to the same position of cover is as circuit board connecting portion, and this circuit board connecting portion structurally includes at least: the upper layer connecting part 122, the part covered by both sides of the substrate plate 11, and the lower layer connecting part 132, by providing a plurality of via holes 14 containing electric conductors on the circuit board connecting part, the process of making the via holes 14 can be through laser hole-forming or plasma hole-etching, and it should be noted that, when making the via holes 14, the upper layer connecting part 122 of the circuit board connecting part, the part covered by both sides of the substrate plate 11, and the lower layer connecting part 132 need to be drilled together, so that the via holes 14 penetrate through the circuit board connecting part; and a conductor is provided in the via hole 14 so that the upper layer wiring 12 is electrically connected to the lower layer wiring 13 through the conductor in the via hole 14.
Further, the circuit board connecting portion is provided with at least 2 via holes 14. In the embodiment of the present invention, a plurality of via holes 14 may be disposed on the circuit board connecting portion, preferably, the circuit board connecting portion in this embodiment has at least 2 via holes 14, so as to effectively avoid that one of the via holes 14 is damaged or partially broken, which may result in the upper circuit 12 and the lower circuit 13 being unable to be electrically connected or blocked; the via hole 14 of the present embodiment can improve the electrical connection between the upper layer wire 12 and the lower layer wire 13, thereby increasing the reliability.
Further, the via hole 14 is provided with a first via hole 141 and a second via hole 142, and the first via hole 141 and the second via hole 142 are arranged on a horizontal line of the circuit board connecting portion in the same direction as the upper line 12. In the embodiment of the present invention, the flexibility of the upper layer circuit 12 and the lower layer circuit 13 on the flexible circuit board should be considered in the arrangement of the plurality of via holes 14 at the circuit board connection portion, so as to reduce the fracture or crack problem of the flexible circuit board or the upper layer circuit 12 and the lower layer circuit 13 to the maximum extent; preferably, the present embodiment includes a first via hole 141 and a second via hole 142, and the circuit board connecting portion includes: the first via hole 141 and the second via hole 142 are disposed on the same horizontal line of the upper circuit board connecting portion in the same direction as the upper circuit 12, and the first via hole 141 and the second via hole 142 are also disposed on the same horizontal line of the lower circuit board connecting portion in the same direction as the lower circuit 13, wherein the first via hole 141 is located at an end of the circuit board connecting portion close to the upper circuit 12, and the second via hole 142 is located at an end of the circuit board connecting portion away from the upper circuit 12.
Further, the conductor is attached to the sidewall of the via hole 14, one end of the conductor vertically penetrates the surface of the lower layer connecting portion 132 from the surface of the upper layer connecting portion 122, one end of the conductor is electrically connected to the upper layer connecting portion 122, and the other end of the conductor is electrically connected to the lower layer connecting portion 132.
Further, the conductive body is a cylindrical conductive ring, the outer side surface of the conductive ring is attached to the side wall of the via hole 14, in this embodiment, the conductive body in the via hole 14 may be a cylindrical conductive ring, the conductive ring is a hollow cylindrical conductive body, the outer side surface of the conductive ring is attached to the side wall of the via hole 14, the cross section of the conductive ring and the cross section of the via hole 14 are on the same horizontal plane, and the cross sections are circular; one end of the conductive ring is electrically connected to the upper layer connecting portion 122, and extends vertically from the end connected to the upper layer connecting portion 122 to the lower layer connecting portion 132, and is electrically connected to the lower layer connecting portion 132.
Further, the conductive body is a strip-shaped conductive strip, and the conductive strip is attached to the sidewall of the via hole 14. In the present embodiment, the conductive body in the via hole 14 can be a strip-shaped conductive strip, which is a strip-shaped conductive body with conductive property, and specifically, the conductive strip can be a conductive body with conductive property, such as a conductive wire, a tin strip, a conductive sheet, and preferably, the present embodiment selects a strip-shaped conductive sheet, one end of the conductive strip is electrically connected to the upper layer connecting portion 122, and vertically extends to the lower layer connecting portion 132 from the end connected to the upper layer connecting portion 122, and is electrically connected to the lower layer connecting portion 132.
Furthermore, the material of the electric conductor is copper material. In the embodiment, the conductor in the via hole 14 is made of a Cu (copper) material, and because the copper material product has good conductivity and certain flexibility, the upper-layer circuit 12 and the lower-layer circuit 13 can be conducted, the reliability of the process for making the via hole 14 is improved, and the via hole 14 is prevented from being damaged to a certain extent; the conductive body of the above embodiment, such as the conductive ring and the conductive strip of the above embodiment, is made of copper material, so that the upper layer circuit 12 and the lower layer circuit 13 of the flexible circuit board are electrically connected through the copper conductive body with better conductive performance.
The utility model provides a flexible circuit board, flexible circuit board contains: the base material board, be fixed in the upper circuit on base material board one surface, be fixed in the lower floor's circuit of the base material board other surface that backs the other side of upper circuit mutually, and the via hole that runs through from the surface of upper circuit to the surface of lower floor's circuit, contain the electric conductor in the via hole, upper circuit is connected through the electric conductor electricity in the via hole with lower floor's circuit, and upper circuit includes at least: upper transmission portion and the upper connection portion of being connected with upper transmission portion electricity, lower floor's circuit includes at least: the upper layer connecting part and the lower layer connecting part respectively cover two sides of the same part of the substrate plate to form a circuit board connecting part; the circuit board connecting part is provided with a plurality of via holes which penetrate from the surface of the upper layer circuit to the surface of the lower layer circuit respectively, so that the upper layer circuit is electrically connected with the lower layer circuit through the electric conductors in the via holes. Through set up a plurality of via holes at the circuit board connecting portion of flexible circuit board, can prevent that the via hole damage from leading to the electric connection of upper circuit and lower floor's circuit to block, improved the reliability that upper circuit and lower floor's circuit switched on.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (7)
1. A flexible circuit board, comprising: the substrate board, be fixed in the upper circuit on a substrate board surface, be fixed in the lower floor's circuit on another surface of substrate board, and run through in the surface of upper circuit and the via hole on the surface of lower floor's circuit, contain the electric conductor in the via hole, upper circuit with lower floor's circuit passes through the electric conductor electricity is connected in the via hole, its characterized in that, upper circuit includes at least: upper transmission portion and with the upper connecting portion that upper transmission portion electricity is connected, lower floor's circuit includes at least: the upper layer connecting part and the lower layer connecting part respectively cover two surfaces of the same part of the substrate plate to form a circuit board connecting part;
the circuit board connecting part is provided with at least two conducting holes, and the upper layer circuit is electrically connected with the lower layer circuit through a conductor in the conducting holes.
2. The flexible circuit board according to claim 1, wherein the circuit board connecting portion is provided with 2 of the via holes.
3. The flexible circuit board of claim 2, wherein the via hole has a first via hole and a second via hole, and the first via hole and the second via hole are arranged on a same horizontal line extending and connecting the circuit board connecting portion to the upper layer circuit.
4. The flexible circuit board according to claim 1, wherein the conductor is attached to a side wall of the via hole, one end of the conductor vertically penetrates a surface of the lower layer wiring from a surface of the upper layer wiring, one end of the conductor is electrically connected to the upper layer wiring, and the other end of the conductor is electrically connected to the lower layer wiring.
5. The flexible circuit board according to claim 4, wherein the conductor is a cylindrical conductive ring, and an outer side surface of the conductive ring is attached to a sidewall of the via hole.
6. The flexible circuit board of claim 4, wherein the conductive body is a strip-shaped conductive strip, and one surface of the conductive strip is attached to the sidewall of the via hole.
7. The flexible circuit board of claim 5 or 6, wherein the conductor is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272488.4U CN211531414U (en) | 2019-12-17 | 2019-12-17 | Flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272488.4U CN211531414U (en) | 2019-12-17 | 2019-12-17 | Flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211531414U true CN211531414U (en) | 2020-09-18 |
Family
ID=72465754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922272488.4U Expired - Fee Related CN211531414U (en) | 2019-12-17 | 2019-12-17 | Flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211531414U (en) |
-
2019
- 2019-12-17 CN CN201922272488.4U patent/CN211531414U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 Termination date: 20211217 |