TWM619976U - Signal guide line - Google Patents

Abstract

This creation provides a signal wire. The signal wire includes a conductive wire core and a graphene copper layer. The graphene copper layer is in the shape of a foil and covers the conductive wire core.

Description

Signal wire

This creation is about signal wires, especially a signal wire that reduces the transmission impedance of high-frequency signals.

The existing signal wires are usually copper wires or aluminum wires, due to the good electrical conductivity (ie, low resistance) of copper and aluminum materials, and the relatively low price of the materials. When transmitting high-frequency signals, it is necessary to use wires made of conductive materials with lower resistance to reduce signal loss. Therefore, high-frequency signals can be transmitted using silver wires, but the price of silver materials is much higher than that of copper and aluminum materials, so the economic benefits are not good.

In view of this, the creator has focused on the above-mentioned existing technology, specially researched and cooperated with the application of academic theory, and tried his best to solve the above-mentioned problems, which became the goal of the creator's improvement.

This creation provides a signal wire that reduces the transmission impedance of high-frequency signals.

This creation provides a signal wire, which includes a conductive wire core and a graphene copper layer. The graphene copper layer is in the shape of a foil and covers the conductive wire core.

In the signal wire of this creation, the conductive core is made of copper, aluminum or graphene copper. The graphene copper layer includes a copper body and a graphene layer embedded in the copper body, and the graphene layer expands and extends along the graphene copper layer. The thickness of the graphene copper layer is less than 0.1 mm. The signal wire has a cross-sectional diameter, and the thickness of the graphene copper layer is less than 10% of the cross-sectional diameter.

In this creation, the overall conductivity of the signal wire can be improved by coating a pressed graphene copper layer on the outer surface of the conductive wire core. The signal wire of this creation has a different conductivity between the surface and the inner core, and the conductivity of the graphene copper layer on the surface is much greater than that of the conductive core, so it can effectively reduce the transmission impedance of high-frequency signals.

10: Signal wire

11: Section diameter

100: Conductive core

120: Graphene sheet

200: Graphene copper layer

200a: Graphene copper material

201: Thickness

210: Copper body

220: Graphene sheet

221: carbon atom

222: functional group

Figure 1 is a three-dimensional schematic diagram of the signal wire of this creation.

Fig. 2 is a cross-sectional view of Fig. 1.

Figures 3 and 4 are schematic diagrams of the structure of graphene sheets.

Figure 5 is a flow chart of the production method of the signal wire of this creation.

Fig. 6 is a schematic diagram of the pressing steps of the manufacturing method of the signal wire of this creation.

Figures 7 and 8 are schematic diagrams of various forms of the graphene copper layer of the signal wire manufacturing method of this creation.

FIG. 9 is a schematic diagram of the coating and extrusion steps of the manufacturing method of the signal wire of this invention.

Figure 10 is a schematic diagram of a graphene copper layer covering a graphene copper conductive wire core.

1 to 3, the present invention provides a signal wire 10, which includes a conductive wire core 100 and a graphene copper layer 200, and the graphene copper layer 200 covers the conductive wire core 100.

In this embodiment, the conductive core 100 is a metal wire made of a metal with better electrical properties, such as copper, aluminum, or graphene copper. However, this creation is not limited to this.

As shown in FIG. 2, the graphene copper layer 200 is in the shape of a foil, and includes a copper body 210 and a graphene layer 220 a embedded in the copper body 210. Specifically, the graphene layer 220a includes a plurality of graphene sheets 220. As shown in FIG. 3, the structure of each graphene sheet 220 includes at least a plurality of carbon atoms 221, six carbon atoms 221 ring arrays form a hexagonal graphene structure, and the carbon atoms 221 are arranged in a plurality of connecting planes extending The complex graphene structure. As shown in FIG. 4, any carbon atom 221 in each graphene structure can be connected to a functional group 222. The graphene sheets 220 are arranged to extend in a plane, and the graphene layer 220a expands and extends along the plane direction of the graphene copper layer 200. Specifically, the signal wire 10 has a cross-sectional diameter 11, the thickness 201 of the graphene copper layer 200 is less than 0.1 mm and preferably less than 0.05 mm, and the thickness 201 of the graphene copper layer 200 is less than 10% of the cross-sectional diameter 11.

Referring to FIG. 5 to FIG. 10, this creation provides a method for manufacturing the signal wire 10, which includes the following steps.

a) First, a conductive core 100 is provided. The conductive core 100 may be made of a metal with better electrical properties such as copper, aluminum, or graphene copper.

b) As shown in FIG. 6, a graphene copper material 200a is pressed into a graphene copper layer 200 in a pressing step. In this embodiment, the graphene copper material 200 a includes a copper body 210 and a plurality of graphene sheets 220 embedded in the copper body 210. Specifically, the graphene copper material 200a is made by kneading graphene powder and copper powder; or is made by adding graphene powder to molten copper. The graphene copper material 200a is pressed to form the copper body 210 into a foil shape and the graphene sheet 220 embedded in the copper body 210 is expanded to form an ink layer embedded in the copper body 210, and the graphene layer 220a is along the graphene copper The plane direction of the layer 200 expands and extends. The foregoing pressing step can press the solid graphene copper material 200a to deform it at room temperature, or heat the graphene copper material to a semi-molten state and then press. Depending on the pressing tool or mold, the graphene copper layer 200 may be pressed into a flat shape as shown in FIG. 7 or may be pressed into a tube shape as shown in FIG. 8.

c) As shown in Figure 9, in a coating step, the graphene copper layer 200 is coated with the conductive wire core 100, which can coat the planar graphene copper layer 200 on the conductive wire core 100, and can also coat the conductive wire core 100. The wire core 100 penetrates the tubular graphene copper layer 200. Generally speaking, the cross-sectional diameter of the finished product made in this step is about 11 Below 1 cm, the thickness of the graphene copper layer 200 is about 0.1 cm or less, and the thickness 201 of the graphene copper layer 200 is less than 10% of the cross-sectional diameter 11.

d) In an extrusion step, the graphene copper layer 200 is extruded from the outside to the inside, so that the graphene copper layer 200 and the outer surface of the conductive core 100 are combined under pressure. In the extrusion step, the signal wire can also be drawn down to the required wire diameter. For example, for general electrical connector applications, the thickness 201 of the graphene copper layer 200 is less than 0.1 mm and preferably less than 0.05 mm, and the thickness 201 of the graphene copper layer 200 is less than 10% of the cross-sectional diameter 11.

The signal wire 10 can be completed by processing the conductive core 100 and the stone black copper material through the steps of pressing, coating, and extrusion.

Graphene has better conductive properties when stretched into layers, and the conductive properties of graphene are negatively correlated with the thickness 201 of its laminated structure. The graphene coating made by spraying method cannot unfold the graphene sheets. The present invention can improve the overall conductivity of the signal wire 10 by coating the pressed graphene copper layer 200 on the outer surface of the conductive core 100. The conductivity of the copper conductive wire core 100 to cover the graphene copper layer 200 can be higher than that of the uncoated silver conductive wire core 100, and the price of the graphene copper material 200a is relatively lower than that of the silver material. Furthermore, due to the skin depth, the high frequency signal is concentrated on the surface of the signal wire 10 during transmission in the signal wire 10, and the higher the frequency, the shallower the signal transmission depth on the surface of the signal wire 10 is. The signal wire 10 of this creation has a different conductivity between the surface and the inner core, and the conductivity of the graphene copper layer 200 on the surface is much higher than that of the conductive wire core 100 made of aluminum, copper or graphene copper, so it can effectively reduce high-frequency signals. Transmission impedance.

It should be particularly noted that the conductive core 100 made of graphene copper has graphene evenly distributed therein. As shown in FIG. 10, after the graphene copper layer 200 is pressed and extruded, the graphene sheets 220 in the graphene sheet 220 are arranged in a layered shape, which is different from the graphene sheets 120 of the conductive core 100 made of graphene copper. Therefore, the graphene copper layer 200 and the conductive core 100 made of graphene copper coated thereon are different in shape and graphene arrangement, so they have different electrical conductivity.

This creation does not limit the sequence of the aforementioned pressing, coating, and extrusion steps. Preferably, the conductive wire core 100 and the graphene copper material 200a can be placed into a tubular die for extrusion forming while simultaneously completing the pressing, coating and extrusion. Pressure.

The above descriptions are only the preferred embodiments of this creation, and are not intended to limit the scope of the patent for this creation. Other equivalent changes using the spirit of the patent for this creation should all fall within the scope of the patent for this creation.

10: Signal wire

11: Section diameter

100: Conductive core

200: Graphene copper layer

201: Thickness

Claims (5)

A signal wire includes the following steps: a conductive wire core; and a graphene copper layer. The graphene copper layer is in the shape of a foil and covers the conductive wire core. The signal wire according to claim 1, wherein the conductive wire core is made of copper, aluminum or graphene copper. The signal wire according to claim 1, wherein the graphene copper layer includes a copper body and a graphene layer embedded in the copper body, and the graphene layer expands and extends along the graphene copper layer. The signal wire according to claim 1, wherein the thickness of the graphene copper layer is less than 0.1 mm. The signal wire according to claim 1 has a cross-sectional diameter, wherein the thickness of the graphene copper layer is less than 10% of the cross-sectional diameter.

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