High-temperature-resistant flexible FPC antenna

Abstract

The utility model discloses a high-temperature-resistant flexible FPC (Flexible Printed Circuit) antenna, which comprises a base material, an antenna circuit is fixedly connected onto the base material, a golden finger is fixedly connected onto the base material, a parting line is arranged on the outer surface of the base material, and the base material can be segmented through the parting line; the inner protective film layer is arranged in the base material, and a flexible connecting rope capable of enhancing the toughness of the base material is arranged in the inner protective film layer. The cutting lines are arranged on the outer surface of the base material and are distributed on the edge of the base material at equal intervals, when a user needs to cut the base material according to the size, the user can refer to the cutting lines and cut the base material along the cutting lines, and at the moment, the possibility of deviation and even cutting of an antenna circuit in the cutting process is reduced to a certain extent; the copper wire ink layer can protect the antenna circuit to a certain extent, the plastic film layer is arranged on the outer side of the copper wire ink layer, and the plastic film layer can reduce the possibility that the copper wire ink layer falls off and fades in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC antennas, in particular to a high-temperature resistant flexible FPC antenna. Background Art

[0002] With the increasing popularity of intelligent and miniaturized mobile communication devices, in order to ensure that the performance of the antenna can better match the mobile communication devices, FPC antennas are used as internal antennas for small electronic products. EPC antennas are equivalent to pulling out the antenna lines on the PCB board and using other external metals to make antennas. They can be made into complex antennas with ten multi-bands. However, the existing EPC antennas still have defects and deficiencies in some aspects that need to be improved:

[0003] For example, an FPC antenna with application number: CN201821104493.3 includes an FPC substrate and a ground plane, a first FPC antenna is arranged on the left side of the front side of the FPC substrate, and a second FPC antenna is arranged on the right side of the front side of the FPC substrate, the first FPC antenna includes a first radiating surface and a second radiating surface, one end of the first radiating surface is vertically connected to one end of the second radiating surface, and a first solder joint is arranged on the second radiating surface, the second FPC antenna includes a third radiating surface and a fourth radiating surface, one end of the third radiating surface is vertically connected to one end of the fourth radiating surface, and a second solder joint is arranged on the third radiating surface, one side of the first radiating surface has a "U"-shaped notch, the second radiating surface is in an "E" shape as a whole, and the third radiating surface is in an "E" shape as a whole, and the first FPC antenna and the second FPC antenna are arranged on the front side of the FPC substrate, without increasing the size of the FPC antenna and the cost of the FPC antenna, the bandwidth, direction and efficiency of the FPC antenna are improved, and the performance of the FPC antenna is greatly improved.

[0004] The EPC antenna in the above document has a fixed size. Users generally trim it to the required size during use, but users cannot refer to it as needed. The antenna may be damaged during the trimming process, which increases the cost.

[0005] The EPC antenna in the above-mentioned document has certain defects in flexibility and poor high temperature resistance, which has certain limitations.

[0006] Therefore, we propose a high temperature resistant flexible FPC antenna to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a high temperature resistant flexible FPC antenna to solve the problems in the above background technology that users cannot refer to it according to their needs, the antenna may be damaged during the trimming process, there are certain defects in flexibility, and the high temperature resistance effect is poor.

[0008] To achieve the above object, the utility model provides the following technical solution: a high temperature resistant flexible FPC antenna, comprising a substrate, an antenna circuit is fixedly connected to the substrate, and a gold finger is fixedly connected to the substrate;

[0009] A dividing line, wherein the dividing line is arranged on the outer surface of the substrate, and the substrate can be divided by the dividing line;

[0010] The inner protective film layer is arranged inside the substrate, and a flexible connecting rope which can enhance the toughness of the substrate is arranged inside the inner protective film layer.

[0011] Furthermore, a plurality of groups of the dividing lines are arranged about the edge of the substrate, and the intervals between two adjacent dividing lines are equal, and the dividing lines do not cross the positions of the antenna lines.

[0012] Furthermore, a copper wire ink layer is provided on the upper surface of the substrate, and a plastic film layer is fixedly connected to the upper side of the copper wire ink layer, and an inner protective film layer is fixedly connected to the outer side of the plastic film layer, a shielding layer is fixedly connected to the outer side of the inner protective film layer, and an outer protective film layer is fixedly connected to the upper side of the shielding layer.

[0013] Furthermore, the copper wire ink layer covers the outside of the antenna circuit, and the copper wire ink layer does not touch the upper surface of the gold finger.

[0014] Furthermore, the inner part of the inner protective film layer is fixedly connected with support bars, and flexible connecting ropes are fixedly connected between the support bars, and the outer end of the inner protective film layer is fixedly connected with a high-temperature insulating layer.

[0015] Furthermore, the shielding layer is made of a flexible metal material, glass fiber is arranged inside the high-temperature insulation layer, and the high-temperature insulation layer isolates the shielding layer from the inner protective film layer.

[0016] Furthermore, the flexible connecting rope is arranged in a zigzag manner, and the supporting bars are symmetrically distributed on both sides of the inner protective film layer.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The outer surface of the substrate is provided with dividing lines, and the dividing lines are equidistantly distributed on the edge of the substrate. When the user needs to cut the substrate to the size, he can refer to the dividing lines and cut along the dividing lines. This reduces the possibility of deviation during cutting or even cutting the antenna line to a certain extent;

[0019] 2. The copper wire ink layer can protect the antenna circuit to a certain extent. At the same time, the plastic film layer is arranged on the outside of the copper wire ink layer. The plastic film layer reduces the possibility of the copper wire ink layer falling off and fading during use to a certain extent.

[0020] 3. The double-layer setting of inner protective film layer and outer protective film layer further protects the substrate, improves the strength of the substrate, and increases the service life of the substrate;

[0021] 4. The flexible connecting rope is arranged inside the inner protective film layer, and the flexible connecting rope is arranged in a zigzag manner. The flexible connecting rope can improve the toughness of the substrate to a certain extent, and the zigzag arrangement increases the flexibility of the substrate;

[0022] 5. The high-temperature insulation layer is arranged between the inner protective film layer and the shielding layer, which can isolate the heat absorbed by the metal material of the shielding layer to a certain extent, and improve the high temperature resistance of the base material through the high-temperature insulation layer itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the side cross-sectional structure of the inner protective film layer of the utility model;

[0026] Figure 4 This is a schematic diagram of the front view structure of the gold finger of the utility model;

[0027] Figure 5 This is a schematic diagram of the front view structure of the support bar of the utility model;

[0028] Figure 6 It is a schematic diagram of the front cross-sectional structure of the inner protective film layer of the utility model.

[0029] In the figure: 1. Base material; 2. Antenna line; 3. Gold finger; 4. Dividing line; 5. Plastic film layer; 6. Copper wire ink layer; 7. Inner protective film layer; 8. High temperature insulation layer; 9. Shielding layer; 10. Flexible connecting rope; 11. Support bar; 12. Outer protective film layer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] like Figure 1 and Figure 4 The technical solution shown in the figure, the utility model provides the following technical solution: a high temperature resistant flexible FPC antenna, disclosing a dividing line 4, the dividing line 4 can assist the user to divide the substrate 1 to a certain extent:

[0033] A substrate 1, to which an antenna circuit 2 is fixedly connected, and a gold finger 3 is fixedly connected;

[0034] A dividing line 4, which is arranged on the outer surface of the substrate 1, and the substrate 1 can be divided by the dividing line 4;

[0035] A plurality of dividing lines 4 are arranged about the edge of the substrate 1 , and the intervals between two adjacent dividing lines 4 are equal, and the dividing lines 4 do not cross the positions of the antenna lines 2 .

[0036] The outer surface of the substrate 1 is provided with a dividing line 4, and the dividing lines 4 are equidistantly distributed on the edge of the substrate 1. When the user needs to cut the substrate 1 to a certain size, the dividing line 4 can be referred to and cut along the dividing line 4. This reduces the possibility of deviation during cutting or even cutting of the antenna line 2 to a certain extent.

[0037] Embodiment 2:

[0038] like Figure 3 , Figure 5 and Figure 6 The technical solution shown in the figure, the utility model provides the following technical solution: a high temperature resistant flexible FPC antenna, discloses a flexible connecting rope 10, through which the flexibility of the substrate 1 can be increased:

[0039] An inner protective film layer 7, which is arranged inside the substrate 1, and a flexible connecting rope 10 is arranged inside the inner protective film layer 7 to enhance the toughness of the substrate 1;

[0040] The inner protective film layer 7 is fixedly connected to the inside with support bars 11, and flexible connecting ropes 10 are fixedly connected between the support bars 11, and the outer end of the inner protective film layer 7 is fixedly connected to the high-temperature insulation layer 8, the flexible connecting rope 10 is zigzag-arranged, and the support bars 11 are symmetrically distributed on both sides of the inner protective film layer 7.

[0041] The inner protective film layer 7 and the outer protective film layer 12 are double-layered to further protect the substrate 1, improve the strength of the substrate 1, and increase the service life of the substrate 1. The flexible connecting rope 10 is arranged inside the inner protective film layer 7, and the flexible connecting rope 10 is arranged in a tortuous manner. The flexible connecting rope 10 can improve the toughness of the substrate 1 to a certain extent, and the tortuous arrangement increases the flexibility of the substrate 1.

[0042] Embodiment three:

[0043] like Figure 2 and Figure 3 The technical solution shown in the figure, the utility model provides the following technical solution: a high temperature resistant flexible FPC antenna, which discloses a high temperature insulating layer 8, and the high temperature resistance of the substrate 1 can be improved by the high temperature insulating layer 8:

[0044] A copper wire ink layer 6 is provided on the upper surface of the substrate 1, and a plastic film layer 5 is fixedly connected to the upper side of the copper wire ink layer 6, and an inner protective film layer 7 is fixedly connected to the outer side of the plastic film layer 5, a shielding layer 9 is fixedly connected to the outer side of the inner protective film layer 7, and an outer protective film layer 12 is fixedly connected to the upper side of the shielding layer 9;

[0045] The copper wire ink layer 6 covers the outside of the antenna line 2, and the copper wire ink layer 6 does not touch the upper surface of the gold finger 3; the shielding layer 9 is made of a flexible metal material, glass fiber is arranged inside the high-temperature insulating layer 8, and the high-temperature insulating layer 8 isolates the shielding layer 9 from the inner protective film layer 7.

[0046] The high-temperature insulating layer 8 is arranged between the inner protective film layer 7 and the shielding layer 9, which can insulate the heat absorbed by the metal material of the shielding layer 9 to a certain extent, and improve the high-temperature resistance of the substrate 1 through the high-temperature insulating layer 8 itself. The copper wire ink layer 6 can protect the antenna line 2 to a certain extent. At the same time, the plastic film layer 5 is arranged on the outside of the copper wire ink layer 6. The plastic film layer 5 reduces the possibility of the copper wire ink layer 6 falling off and fading during use to a certain extent.

[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant flexible FPC antenna, comprising a substrate (1), an antenna circuit (2) being fixedly connected to the substrate (1), and a gold finger (3) being fixedly connected to the substrate (1); Features: Also includes: A dividing line (4), wherein the dividing line (4) is arranged on the outer surface of the substrate (1), and the substrate (1) can be divided by the dividing line (4); An inner protective film layer (7) is arranged inside the substrate (1), and a flexible connecting rope (10) is arranged inside the inner protective film layer (7) to enhance the toughness of the substrate (1).

2. The high temperature resistant flexible FPC antenna according to claim 1, characterized in that: The dividing lines (4) are arranged in multiple groups with respect to the edge of the substrate (1), and the spacing between two adjacent dividing lines (4) is equal, and the dividing lines (4) do not cross the position of the antenna line (2).

3. The high temperature resistant flexible FPC antenna according to claim 1, characterized in that: A copper wire ink layer (6) is provided on the upper surface of the substrate (1), and a plastic film layer (5) is fixedly connected to the upper side of the copper wire ink layer (6), and an inner protective film layer (7) is fixedly connected to the outer side of the plastic film layer (5), a shielding layer (9) is fixedly connected to the outer side of the inner protective film layer (7), and an outer protective film layer (12) is fixedly connected to the upper side of the shielding layer (9).

4. The high temperature resistant flexible FPC antenna according to claim 3, characterized in that: The copper wire ink layer (6) covers the outer side of the antenna circuit (2), and the copper wire ink layer (6) is not in contact with the upper surface of the gold finger (3).

5. The high temperature resistant flexible FPC antenna according to claim 3, characterized in that: The inner part of the inner protective film layer (7) is fixedly connected to a support bar (11), and a flexible connecting rope (10) is fixedly connected between the support bars (11), and the outer end of the inner protective film layer (7) is fixedly connected to a high-temperature insulating layer (8).

6. The high temperature resistant flexible FPC antenna according to claim 5, characterized in that: The shielding layer (9) is made of a flexible metal material, glass fibers are arranged inside the high-temperature insulation layer (8), and the high-temperature insulation layer (8) isolates the shielding layer (9) from the inner protective film layer (7).

7. The high temperature resistant flexible FPC antenna according to claim 5, characterized in that: The flexible connecting rope (10) is arranged in a zigzag manner, and the supporting strips (11) are symmetrically distributed on both sides of the inner protective film layer (7).

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