CN216930395U - Flexible structure of FPC bending region - Google Patents
Flexible structure of FPC bending region Download PDFInfo
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- CN216930395U CN216930395U CN202123196725.7U CN202123196725U CN216930395U CN 216930395 U CN216930395 U CN 216930395U CN 202123196725 U CN202123196725 U CN 202123196725U CN 216930395 U CN216930395 U CN 216930395U
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Abstract
A flexible structure of FPC bending region comprises a first main body section, the bending section comprises a bending section and a second main body section, one end of the bending section is connected with the first main body section, the other end of the bending section is connected with the second main body section, a bending window used for increasing the flexibility of the bending section is arranged on the bending section, the first main body section comprises a first base material layer and a first copper wire layer, the first copper wire layer is arranged on the first base material layer, the second main body section comprises a second base material layer and a second copper wire layer, the second copper wire layer is arranged on the second base material layer, one end of the bending section is connected with the first base material layer, the other end of the bending section is connected with the second base material layer, the bending section comprises a first window frame and a second window frame, the bending window is located between the first window frame and the second window frame, the first base material layer and the second base material layer are connected with the first window frame, and the second window frame is also connected with the first base material layer and the second base material layer. The bending window increases the flexibility of the bending section, is beneficial to assembly, and reduces the product defect caused by bending.
Description
Technical Field
The utility model discloses a flexible structure of an FPC (flexible printed circuit) bending area, belonging to the technical field of flexible printed circuit boards.
Background
Flexible circuit boards, also known as "flexible boards," are printed circuits made from flexible, insulating substrates. Flexible circuits provide excellent electrical performance, meet design requirements for smaller and higher density packaging, and also help reduce assembly processes and enhance reliability. The flexible circuit board is the only solution to meet the miniaturization and movement requirements of electronic products. The flexible circuit board can greatly reduce the volume and the weight of the electronic product, and is suitable for the development of the electronic product towards high density, miniaturization and high reliability. The Flexible Printed Circuit (FPC) is commonly known in the Flexible Circuit board industry, and has many advantages that the rigid Printed Circuit board does not have. Therefore, the flexible circuit board is widely applied to the fields or products of aerospace, military, mobile communication, laptop computers, computer peripherals, digital cameras and the like.
At present, grid copper is generally paved on a bending area of a flexible circuit board, and a covering film is not windowed, so that the bending effect of the bending area of the flexible circuit board is poor, the flexible circuit board is not soft and is easy to break.
Disclosure of Invention
Aiming at the problem that the bending effect of the bending area of the flexible circuit board in the prior art is poor, the utility model provides a flexible structure of the bending area of the FPC, wherein the flexible circuit board is provided with a bending section, and the bending section is provided with a bending window.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the flexible structure of the FPC bending area comprises a first main body section, a bending section and a second main body section, wherein one end of the bending section is connected with the first main body section, the other end of the bending section is connected with the second main body section, and a bending window used for increasing flexibility of the bending section is arranged on the bending section.
The technical scheme adopted by the utility model for solving the technical problem further comprises the following steps:
in order to make first main part section with second main part section possesses the function that can electrically conduct transmission signal, first main part section is including first substrate layer and first copper line layer, first copper line layer sets up on the first substrate layer, second main part section is including second substrate layer and second copper line layer, second copper line layer sets up on the second substrate layer, the one end of the section of buckling with first substrate layer is connected, the other end of the section of buckling with the second substrate layer is connected.
For convenience, the bending section comprises a first window frame and a second window frame, the bending window is located between the first window frame and the second window frame, one end of the first window frame is connected with the first base material layer, the other end of the first window frame is connected with the second base material layer, one end of the second window frame is connected with the first base material layer, and the other end of the second window frame is connected with the second base material layer.
In order to facilitate the arrangement of the first window frame and the second window frame, the bending window is rectangular.
In order to prevent the bending section from being torn, the first window frame comprises a first window frame base material layer and a first window frame copper wire layer, the first window frame copper wire layer is arranged on the first window frame base material layer, one end of the first window frame base material layer is connected with the first base material layer, the other end of the first window frame base material layer is connected with the second base material layer, one end of the first window frame copper wire layer is connected with the first copper wire layer, the other end of the first window frame copper wire layer is connected with the second copper wire layer, the second window frame comprises a second window frame base material layer and a second window frame copper wire layer, the second window frame copper wire layer is arranged on the second window frame base material layer, one end of the second window frame base material layer is connected with the first base material layer, the other end of the second window frame base material layer is connected with the second base material layer, and one end of the second window frame copper wire layer is connected with the first copper wire layer, and the other end of the second window frame copper wire layer is connected with the second copper wire layer.
In order to protect the first copper wire layer, the second copper wire layer, the first window frame copper wire layer and the second window frame copper wire layer, the first main body section further comprises a first cover film, the first copper wire layer is positioned between the first cover film and the first base material layer, the first cover film is covered on the first copper wire layer, the second main body section further comprises a second cover film, the second copper wire layer is positioned between the second cover film and the second base material layer, the second cover film is covered on the second copper wire layer, the first window frame further comprises a first window frame cover film, the first window frame copper wire layer is positioned between the first window frame base material layer and the first window frame cover film, the first window frame cover film is covered on the first window frame copper wire layer, one end of the first window frame cover film is connected with the first cover film, the other end of the first window frame covering film is connected with the second covering film, the second window frame further comprises a second window frame covering film, the second window frame copper wire layer is located between the second window frame covering film and the second window frame base material layer, the second window frame covering film covers the second window frame copper wire layer, one end of the second window frame covering film is connected with the first covering film, and the other end of the second window frame covering film is connected with the second covering film.
In order to improve the utility of the flexible circuit board, the first copper wire layer and the first cover film are arranged on two parallel surfaces of the first base material layer, the second copper wire layer and the second cover film are arranged on two parallel surfaces of the second base material layer, the first window frame copper wire layer and the first window frame cover film are arranged on two parallel surfaces of the first window frame base material layer, and the second window frame copper wire layer and the second window frame cover film are arranged on two parallel surfaces of the second window frame base material layer.
In order to enable different parts of the first window frame and the second window frame to have the same flexibility, the first window frame and the second window frame are both in a strip shape, and the first window frame and the second window frame are arranged in parallel.
The utility model has the beneficial effects that: the flexible circuit board comprises the bending section, the bending window is arranged on the bending section, the flexibility of the bending section is improved by the bending window, the bending section is easier to bend, the bending section can also be prevented from being torn, the flexible circuit board is beneficial to installation, and the product defect caused by bending is reduced.
The utility model will be further described with reference to the drawings and the following detailed description.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of a flexible structure of FPC bending region of the present invention;
fig. 2 is a schematic diagram of connection of a first substrate layer, a first window frame substrate layer, a second window frame substrate layer and a second substrate layer in a preferred embodiment of a flexible structure of an FPC bending region of the present invention;
FIG. 3 is a schematic view of a prior art FPC in comparison with the present invention;
FIG. 4 is a schematic view of a substrate layer of a FPC of the prior art, in contrast to the present invention;
FIG. 5 is a schematic diagram of the connection of the first copper wire layer, the first window frame copper wire layer, the second window frame copper wire layer and the second copper wire layer according to the preferred embodiment of the flexible structure of the FPC bending region of the present invention;
FIG. 6 is a schematic view of the connection of the first cover film, the first window frame cover film, the second window frame cover film and the second cover film of the preferred embodiment of the flexible structure of the FPC bending region of the present invention;
fig. 7 is a schematic cross-sectional view of a substrate layer, a copper wire layer and a cover film of a flexible circuit board in which a flexible structure of an FPC bending region is provided in the form of a double-sided board according to the present invention;
fig. 8 is a schematic cross-sectional view of a substrate layer, a copper wire layer and a cover film of a flexible circuit board, wherein the substrate layer, the copper wire layer and the cover film are arranged in a single-panel manner in the flexible structure of the FPC bending region according to the present invention.
Reference numerals: 1-first main part section, 11-first substrate layer, 12-first copper wire layer, 13-first cover film, 2-first window frame, 21-bending window, 22-first window frame copper wire layer, 23-second window frame copper wire layer, 24-first window frame substrate layer, 25-second window frame substrate layer, 26-first window frame cover film, 27-second window frame cover film, 3-second main part section, 31-second substrate layer, 32-second copper wire layer, 33-second cover film, 4-second window frame, 7-substrate layer, 8-copper wire layer, 9-cover film.
Detailed Description
The present embodiment is a preferred embodiment of the present invention, and other principles and basic structures that are the same as or similar to the present embodiment are within the scope of the present invention.
The utility model relates to a flexible structure of an FPC (flexible printed circuit) bending area, which can be shown in figures 1 to 8 in a better embodiment and comprises a first main body section 1, a bending section and a second main body section 3, wherein one end of the bending section is connected with the first main body section 1, the other end of the bending section is connected with the second main body section 3, a bending window 21 is arranged on the bending section, and the bending window 21 is used for increasing the flexibility of the bending section.
The first main body segment 1 comprises a first substrate layer 11, a first copper wire layer 12 and a first cover film 13, wherein the first copper wire layer 12 is arranged on the first substrate layer 11, the first copper wire layer 12 is positioned between the first cover film 13 and the first substrate layer 11, and the first cover film 13 covers the first copper wire layer 12.
The second main body section 3 includes a second substrate layer 31, a second copper wire layer 32 and a second cover film 33, the second copper wire layer 32 is disposed on the second substrate layer 31, the second copper wire layer 32 is located between the second cover film 33 and the second substrate layer 31, and the second cover film 33 covers the second copper wire layer 32.
The bending section comprises a first window frame 2 and a second window frame 4, the first window frame 2 and the second window frame 4 are both in a strip shape, the first window frame 2 and the second window frame 4 are arranged in parallel, a bending window 21 is located between the first window frame 2 and the second window frame 4, and the bending window 21 is in a rectangular shape.
The first window frame 2 includes a first window frame base material layer 24, a first window frame copper wire layer 22, and a first window frame cover film 26, the first window frame copper wire layer 22 is provided on the first window frame base material layer 24, the first window frame copper wire layer 22 is located between the first window frame base material layer 24 and the first window frame cover film 26, and the first window frame cover film 26 is covered on the first window frame copper wire layer 22.
One end of the first window frame base material layer 24 is connected with the first base material layer 11, the other end of the first window frame base material layer 24 is connected with the second base material layer 31, one end of the first window frame copper wire layer 22 is connected with the first copper wire layer 12, the other end of the first window frame copper wire layer 22 is connected with the second copper wire layer 32, one end of the first window frame cover film 26 is connected with the first cover film 13, and the other end of the first window frame cover film 26 is connected with the second cover film 33.
The second window frame 4 includes a second window frame base material layer 25, a second window frame copper wire layer 23, and a second window frame cover film 27, the second window frame copper wire layer 23 is disposed on the second window frame base material layer 25, the second window frame copper wire layer 23 is located between the second window frame cover film 27 and the second window frame base material layer 25, and the second window frame cover film 27 covers the second window frame copper wire layer 23.
One end of the second window frame base material layer 25 is connected with the first base material layer 11, the other end of the second window frame base material layer 25 is connected with the second base material layer 31, one end of the second window frame copper wire layer 23 is connected with the first copper wire layer 12, the other end of the second window frame copper wire layer 23 is connected with the second copper wire layer 32, one end of the second window frame cover film 27 is connected with the first cover film 13, and the other end of the second window frame cover film 27 is connected with the second cover film 33.
In this embodiment, the flexible circuit board is disposed in a double-sided board manner, that is, the first copper wire layer 12 and the first cover film 13 are disposed on two parallel surfaces of the first substrate layer 11, the second copper wire layer 32 and the second cover film 33 are disposed on two parallel surfaces of the second substrate layer 31, the first window frame copper wire layer 22 and the first window frame cover film 26 are disposed on two parallel surfaces of the first window frame substrate layer 24, and the second window frame copper wire layer 23 and the second window frame cover film 27 are disposed on two parallel surfaces of the second window frame substrate layer 25. The first copper wire layer 12 and the second copper wire layer 32 located on the same plane are connected by the first window frame copper wire layer 22, and the connected first copper wire layer 12, second copper wire layer 32 and first window frame copper wire layer 22 are located on the same plane. The first copper wire layer 12 and the second copper wire layer 32, which are located on the same plane, are also connected through the second window frame copper wire layer 23, and the connected first copper wire layer 12, second copper wire layer 32 and second window frame copper wire layer 23 are located on the same plane. The first cover film 13 and the second cover film 33 on the same face are connected by the first window frame cover film 26, and the connected first cover film 13, second cover film 33, and first window frame cover film 26 are on the same face. The first cover film 13 and the second cover film 33 on the same face are also connected by the second window frame cover film 27, and the connected first cover film 13, second cover film 33, and second window frame cover film 27 are on the same face. In a specific embodiment, the flexible circuit board may be configured in a single-panel manner, that is, the first copper wire layer 12 and the first cover film 13 are disposed on only one surface of the first substrate layer 11, the second copper wire layer 32 and the second cover film 33 are disposed on only one surface of the second substrate layer 31, the first window frame substrate layer 24 is provided with the first window frame copper wire layer 22 and the first window frame cover film 26 on only one surface, the second window frame substrate layer 25 is provided with the second window frame copper wire layer 23 and the second window frame cover film 27 on only one surface, the first copper wire layer 12, the first cover film 13, the second copper wire layer 32, the second cover film 33, the first window frame copper wire layer 22, the first window frame cover film 26, the second window frame copper wire layer 23 and the second window frame cover film 27 are disposed on the same side of the flexible circuit board, and the first cover film 13 and the second cover film 33 are connected by the first window frame cover film 26, the first and second coverlays 13 and 33 are also connected by the second window frame coverlay 27, the first and second copper wire layers 12 and 32 are connected by the first window frame copper wire layer 22, and the first and second copper wire layers 12 and 32 are also connected by the second window frame copper wire layer 23.
The present invention collectively refers to the first cover film 13, second cover film 33, first sash cover film 26 and second sash cover film 27 as cover films 9. The present invention collectively refers to first copper wire layer 12, second copper wire layer 32, first window frame copper wire layer 22, and second window frame copper wire layer 23 as copper wire layer 8. In the present invention, the first base material layer 11, the first sash base material layer 24, the second sash base material layer 25, and the second base material layer 31 are collectively referred to as a base material layer 7. For a flexible circuit board provided in the form of a double-sided board, a cover film is coated on a copper wire layer. For flexible circuit boards arranged in a single panel, a coverlay film also overlies the copper wire layer.
In summary, compared with the prior art, the substrate layer, the copper wire layer and the cover film of the FPC in the prior art are not provided with the bending windows, and the bending section of the FPC in the utility model is provided with the bending windows, so that the FPC in the utility model is easier to bend, can prevent tearing, is beneficial to assembly, and reduces product defects caused by bending.
Claims (8)
1. A FPC bending area structure of easily buckling which characterized in that: the FPC bending area bending-easy structure comprises a first main body section (1), a bending section and a second main body section (3), one end of the bending section is connected with the first main body section (1), the other end of the bending section is connected with the second main body section (3), and a bending window (21) used for increasing flexibility of the bending section is arranged on the bending section.
2. The flexible structure of FPC bending area of claim 1, wherein: first main part section (1) is including first substrate layer (11) and first copper line layer (12), first copper line layer (12) set up on first substrate layer (11), second main part section (3) are including second substrate layer (31) and second copper line layer (32), second copper line layer (32) set up on second substrate layer (31), the one end of bending segment with first substrate layer (11) are connected, the other end of bending segment with second substrate layer (31) are connected.
3. The flexible structure of FPC bending area of claim 2, characterized in that: the bending section comprises a first window frame (2) and a second window frame (4), the bending window (21) is located between the first window frame (2) and the second window frame (4), one end of the first window frame (2) is connected with the first base material layer (11), the other end of the first window frame (2) is connected with the second base material layer (31), one end of the second window frame (4) is connected with the first base material layer (11), and the other end of the second window frame (4) is connected with the second base material layer (31).
4. The flexible structure of FPC bending area of claim 3, characterized in that: the bending window (21) is rectangular.
5. A flexible structure of FPC bending area as claimed in claim 3, wherein: the first window frame (2) comprises a first window frame base material layer (24) and a first window frame copper wire layer (22), the first window frame copper wire layer (22) is arranged on the first window frame base material layer (24), one end of the first window frame base material layer (24) is connected with the first base material layer (11), the other end of the first window frame base material layer (24) is connected with the second base material layer (31), one end of the first window frame copper wire layer (22) is connected with the first copper wire layer (12), the other end of the first window frame copper wire layer (22) is connected with the second copper wire layer (32), the second window frame (4) comprises a second window frame base material layer (25) and a second window frame copper wire layer (23), the second window frame copper wire layer (23) is arranged on the second window frame base material layer (25), one end of the second window frame base material layer (25) is connected with the first base material layer (11), the other end of the second window frame base material layer (25) is connected with the second base material layer (31), one end of the second window frame copper wire layer (23) is connected with the first copper wire layer (12), and the other end of the second window frame copper wire layer (23) is connected with the second copper wire layer (32).
6. The flexible structure of FPC bending area of claim 5, characterized in that: the first body segment (1) further comprises a first cover film (13), the first copper wire layer (12) is located between the first cover film (13) and the first substrate layer (11), the first cover film (13) covers the first copper wire layer (12), the second body segment (3) further comprises a second cover film (33), the second copper wire layer (32) is located between the second cover film (33) and the second substrate layer (31), the second cover film (33) covers the second copper wire layer (32), the first window frame (2) further comprises a first window frame cover film (26), the first window frame copper wire layer (22) is located between the first window frame substrate layer (24) and the first window frame cover film (26), the first window frame cover film (26) covers the first window frame copper wire layer (22), one end of the first window frame cover film (26) is connected with the first cover film (13), the other end of the first window frame cover film (26) is connected with the second cover film (33), the second window frame (4) further comprises a second window frame cover film (27), the second window frame copper wire layer (23) is located between the second window frame cover film (27) and the second window frame base material layer (25), the second window frame cover film (27) covers the second window frame copper wire layer (23), one end of the second window frame cover film (27) is connected with the first cover film (13), and the other end of the second window frame cover film (27) is connected with the second cover film (33).
7. The flexible structure of FPC bending area of claim 6, wherein: the two parallel surfaces of the first base material layer (11) are provided with the first copper wire layer (12) and the first cover film (13), the two parallel surfaces of the second base material layer (31) are provided with the second copper wire layer (32) and the second cover film (33), the two parallel surfaces of the first window frame base material layer (24) are provided with the first window frame copper wire layer (22) and the first window frame cover film (26), and the two parallel surfaces of the second window frame base material layer (25) are provided with the second window frame copper wire layer (23) and the second window frame cover film (27).
8. A flexible structure of FPC bending area as claimed in claim 3, wherein: the first window frame (2) and the second window frame (4) are both in a strip shape, and the first window frame (2) and the second window frame (4) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123196725.7U CN216930395U (en) | 2021-12-17 | 2021-12-17 | Flexible structure of FPC bending region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123196725.7U CN216930395U (en) | 2021-12-17 | 2021-12-17 | Flexible structure of FPC bending region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216930395U true CN216930395U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123196725.7U Active CN216930395U (en) | 2021-12-17 | 2021-12-17 | Flexible structure of FPC bending region |
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|---|---|
| CN (1) | CN216930395U (en) |
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2021
- 2021-12-17 CN CN202123196725.7U patent/CN216930395U/en active Active
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