Welded high-speed transmission FFC flat cable

Abstract

The utility model discloses a kind of welding type high-speed transmission FFC flat cable, which comprises a conductor, the conductor is connected with high-frequency insulating adhesive film on both sides, the CN1 end and CN2 end of the conductor are gold fingers, and the connector is connected to the gold finger on the CN1 end of the conductor;The outer surface of the high-frequency insulating adhesive film is connected with a composite shielding material, a hot melt adhesive film is connected on the high-frequency insulating adhesive film on one side of the CN2 end, and the outer side of the hot melt adhesive film is connected with a reinforcing plate;The composite shielding material is opened at the CN1 end to form a laser area, and a double-sided conductive aluminum foil is connected on the composite shielding material of the CN1 end, the double-sided conductive aluminum foil covers the laser area and is lapped on the connector.Compared with the prior art, the utility model is designed to transmit FFC at high speed by high-frequency insulating adhesive film and composite shielding material, and then directly welded on the connector to meet the high-frequency HBR3 transmission requirements;In addition, the connector and FFC are welded after canceling the processing electronic wire, the composite cloth pasting operation is canceled to reduce the thickness, the operation process is reduced to improve the efficiency, and the customer assembly demand is met.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a welded high-speed transmission FFC cable. Background Technology

[0002] In today's era of rapid technological advancement, portable electronic devices such as laptops and tablets are constantly evolving towards thinner, lighter, and higher-performance designs. To meet users' dual demands for portability and processing power, these ultra-thin electronic devices are becoming increasingly integrated with their internal components, which in turn places more stringent requirements on the cables connecting these components.

[0003] The existing FFC cables have the following problems: ① They use electronic wires + ordinary FFC, and the transmission rate after combination can only reach the USB 2.0 speed, which cannot meet the requirements of high-frequency HBR3; ② The overall thickness is large, which cannot meet the customer's assembly needs; ③ The manufacturing process is complicated, time-consuming and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a welded high-speed transmission FFC cable. A high-frequency insulating film and composite shielding material are used to design the high-speed transmission FFC, which is then directly welded onto the connector to meet the high-frequency HBR3 transmission requirements. Furthermore, the invention eliminates the need for fabricating electronic wires before welding the connector and FFC, and eliminates the need for composite cloth lamination to reduce thickness. These reductions in processing steps improve efficiency and meet customer assembly needs, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A solderable high-speed transmission FFC cable includes a conductor with high-frequency insulating film connected to both sides of the conductor. The CN1 and CN2 ends of the conductor are gold fingers, and a connector is connected to the gold fingers of the CN1 end of the conductor. A composite shielding material is connected to the outer surface of the high-frequency insulating film. A hot melt adhesive film is connected to one side of the high-frequency insulating film at the CN2 end, and a reinforcing plate is connected to the outer side of the hot melt adhesive film. The composite shielding material has an opening at the CN1 end to form a laser area, and a double-sided conductive aluminum foil is connected to the composite shielding material at the CN1 end. The double-sided conductive aluminum foil covers the laser area and overlaps the connector.

[0006] A further aspect of this invention is that the high-frequency insulating film comprises, from the inside out, a flame-retardant hot melt adhesive layer a, a printed pre-coating layer and a PET surface film a, and the thickness of the high-frequency insulating film is 50-70 μm, preferably 60 μm.

[0007] A further aspect of this invention is that the hot melt adhesive film comprises, from the inside out, a flame-retardant hot melt adhesive layer b and a PET surface film b, and the thickness of the hot melt adhesive film is 40-50 μm, preferably 43 μm.

[0008] A further embodiment of this invention is that the reinforcing plate comprises, from the inside out, a flame-retardant hot melt adhesive layer c, a printing ink layer and a PET surface film c, and the thickness of the reinforcing plate is 210-230 μm, preferably 225 μm.

[0009] A further embodiment of this invention is that the composite shielding material includes release paper, PET double-sided film, polyester fiber film and aluminum foil Mylar. After the release paper is peeled off, the composite shielding material is adhered to the outer surface of the high-frequency insulating film. The thickness of the composite shielding material is 0.2 to 0.3 mm, preferably 0.225 mm.

[0010] A further aspect of this invention is that the thickness of the double-sided conductive aluminum foil is 0.06–0.1 mm, preferably 0.08 mm.

[0011] A further aspect of this invention is that the conductor is made of bare copper, and the number of conductors is 20 to 60 pins, preferably 40 pins.

[0012] A further aspect of this invention is that the overall thickness of the FFC cable is 0.5–0.9 mm, preferably 0.62 ± 0.05 mm.

[0013] The beneficial effects of this utility model are: This utility model relates to a welded high-speed transmission FFC cable. The high-frequency insulating film and composite shielding material are designed for high-speed transmission FFC, which is then directly welded onto the connector to meet the high-frequency HBR3 transmission requirements.

[0014] This utility model's welded high-speed transmission FFC cable eliminates the need for machining electronic wires before welding the connector to the FFC, and eliminates the need for composite cloth to be laid flat, reducing thickness, reducing work steps and improving efficiency, thus meeting customer assembly needs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of the present invention.

[0017] Figure 3 This is a partial sectional view of the present invention.

[0018] Figure 4 This is a cross-sectional view of the high-frequency insulating film of this utility model.

[0019] Figure 5This is a cross-sectional view of the hot melt adhesive film of this utility model.

[0020] Figure 6 This is a cross-sectional view of the reinforcing plate of this utility model.

[0021] Figure 7 This is a cross-sectional view of the composite shielding material of this utility model.

[0022] In the diagram: 1-Conductor, 101-Gold finger, 2-High frequency insulating film, 201-Flame-retardant hot melt adhesive layer a, 202-Printed pre-coating layer, 203-PET surface film a, 3-Connector, 4-Composite shielding material, 401-Release paper, 402-PET double-sided film, 403-Polyester fiber film, 404-Aluminum foil Mylar, 5-Hot melt adhesive film, 501-Flame-retardant hot melt adhesive layer b, 502-PET surface film b, 6-Reinforcing plate, 601-Flame-retardant hot melt adhesive layer c, 602-Printed ink coating layer, 603-PTE surface film c, 7-Bidirectional conductive aluminum foil, 8-Laser area. Detailed Implementation

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: As Figures 1-7 As shown, a welded high-speed transmission FFC cable includes a conductor 1, with high-frequency insulating films 2 connected to both sides of the conductor 1. The CN1 and CN2 ends of the conductor 1 are gold fingers 101, and a connector 3 is connected to the gold fingers 101 at the CN1 end of the conductor 1. A composite shielding material 4 is connected to the outer surface of the high-frequency insulating film 2. A hot melt adhesive film 5 is connected to one side of the high-frequency insulating film 2 at the CN2 end, and a reinforcing plate 6 is connected to the outer side of the hot melt adhesive film 5. The composite shielding material 4 has an opening at the CN1 end to form a laser area 8. The laser area 8 has a width of 17mm and a length of 5mm, and a double-sided conductive aluminum foil 7 is connected to the composite shielding material 4 at the CN1 end. The double-sided conductive aluminum foil 7 covers the laser area 8 and overlaps with the connector 3.

[0025] The high-frequency insulating film 2 comprises, from the inside out, a flame-retardant hot melt adhesive layer a201, a printed pre-coating layer 202, and a PET surface film a203. The high-frequency insulating film 2 has a thickness of 60 μm, of which the flame-retardant hot melt adhesive layer a201 has a thickness of 34 μm, the printed pre-coating layer 202 has a thickness of 1 μm, and the PET surface film a203 has a thickness of 25 μm.

[0026] The hot melt adhesive film 5 consists of a flame-retardant hot melt adhesive layer b501 and a PET surface film b502 from the inside out. The thickness of the hot melt adhesive film 5 is 43μm.

[0027] The reinforcing plate 6 comprises, from the inside out, a flame-retardant hot melt adhesive layer c601, a printing ink layer 602, and a PET surface film c603. The thickness of the reinforcing plate 6 is 225μm.

[0028] The composite shielding material 4 includes release paper 401, PET double-sided film 402, polyester fiber film 403 and aluminum foil Mylar 404. After the release paper 401 is peeled off, the composite shielding material 4 is adhered to the outer surface of the high-frequency insulating film 2. The dimensions of the composite shielding material 4 are 20mm in width * 158mm in length * 0.225mm in thickness.

[0029] The thickness of the double-sided conductive aluminum foil 7 is 0.08 mm.

[0030] Conductor 1 is made of bare copper and has 40 pins.

[0031] The overall thickness of the FFC cable is 0.62±0.05mm.

[0032] The preparation method of this utility model includes the following steps: Step 1: Place conductor 1, high-frequency insulating film 2, hot melt adhesive film 5 and reinforcing plate 6 on the bonding machine for debugging and bonding.

[0033] Step 2: Slit and electrical test the bonded semi-finished FFC.

[0034] Step 3: Cut the electrically tested semi-finished FFC device on an automatic cutting machine.

[0035] Step 4: Take out the composite shielding material 4 and attach it to both sides of the cut half-finished FFC according to the dimensions.

[0036] Step 5: Solder connector 3 onto the gold finger 101 at the end of conductor 1CN1.

[0037] Step 6: Open the CN1 end of the composite shielding material 4 to form a laser area 8. Attach the double-sided conductive aluminum foil 7 to the composite shielding material 4. Connect one end of the double-sided conductive aluminum foil 7 to the connector 3, and completely cover the laser area 8 of the composite shielding material 4 with the other end to achieve grounding, thereby enhancing the elimination of electromagnetic interference and reducing signal loss.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A welded high-speed transmission FFC cable, characterized in that: The FFC cable includes a conductor (1), with high-frequency insulating films (2) connected to both sides of the conductor (1). The CN1 end and CN2 end of the conductor (1) are gold fingers (101), and the connector (3) is connected to the gold fingers (101) of the CN1 end of the conductor (1). The outer surface of the high-frequency insulating film (2) is connected to a composite shielding material (4), and a hot melt adhesive film (5) is connected to one side of the high-frequency insulating film (2) at the CN2 end. A reinforcing plate (6) is connected to the outer side of the hot melt adhesive film (5). The composite shielding material (4) has an opening at the CN1 end to form a laser area (8), and a double-sided conductive aluminum foil (7) is connected to the composite shielding material (4) at the CN1 end. The double-sided conductive aluminum foil (7) covers the laser area (8) and overlaps with the connector (3).

2. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The high-frequency insulating film (2) includes, from the inside out, a flame-retardant hot melt adhesive layer a (201), a printed pre-coating layer (202), and a PET surface film a (203). The thickness of the high-frequency insulating film (2) is 50-70 μm.

3. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The hot melt adhesive film (5) includes a flame-retardant hot melt adhesive layer b (501) and a PET surface film b (502) from the inside to the outside. The thickness of the hot melt adhesive film (5) is 40-50 μm.

4. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The reinforcing plate (6) includes, from the inside out, a flame-retardant hot melt adhesive layer c (601), a printing ink layer (602), and a PET surface film c (603). The thickness of the reinforcing plate (6) is 210-230 μm.

5. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The composite shielding material (4) includes release paper (401), PET double-sided film (402), polyester fiber film (403) and aluminum foil Mylar (404). After the release paper (401) is peeled off, the composite shielding material (4) is adhered to the outer surface of the high-frequency insulating film (2). The thickness of the composite shielding material (4) is 0.2 to 0.3 mm.

6. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The thickness of the double-sided conductive aluminum foil (7) is 0.06 to 0.1 mm.

7. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The conductor (1) is made of bare copper and has 20 to 60 pins.

8. The welded high-speed transmission FFC cable as described in claim 1, characterized in that: The overall thickness of the FFC cable is 0.5 to 0.9 mm.

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