TWM632923U - Data transmission cable - Google Patents

Abstract

This creation provides a data transmission cable, which includes a plurality of parallel and spaced wires, a plastic layer integrally formed around the plurality of wires, and a metal shielding layer covering the outside of the plastic layer; wherein the wires have a plurality of signal wire and the intermediate grounding wire arranged between the signal wires, the intermediate grounding wire is electrically connected to the metal shielding layer in the thickness direction of the data transmission cable.

Description

data transmission cable

The invention relates to a data transmission cable, in particular to a data transmission cable with stable transmission performance.

Flat data transmission cables are widely used in the electrical connection field due to their softness and small footprint. A conventional flat cable is provided with a plurality of signal transmission wires arranged side by side, an insulating structure and a metal shielding layer. Although the aforementioned metal shielding layer can provide a certain shielding effect on external electromagnetic interference, it is unavoidable for some interference signals that are limited inside, such as in an insulating structure.

In view of this, it is necessary to improve the known technology to solve the above problems.

The purpose of this creation is to provide a data transmission cable that can further purify the internal environment and improve the stability of signal transmission.

In order to achieve the above purpose, the invention provides a data transmission cable, comprising: a plurality of parallel and spaced wires, a plastic layer integrally formed around the plurality of wires, and a metal shielding layer covering the outside of the plastic layer; wherein , the wire has a plurality of signal lines and an intermediate grounding line arranged between the signal lines, and in the thickness direction of the data transmission cable, the intermediate grounding line is electrically connected to the metal shielding layer.

Further, the central axis of the signal line and the middle ground line are located on the same plane, and the position corresponding to the longitudinal direction of the plastic layer and the middle ground line is formed to expose the middle ground line to the outside. The metal shielding layer is formed with a recessed notch and covers the recessed part of the inner wall of the notch, and the recessed part forms a ground connection with the middle ground line.

Further, the notch is arranged through the plastic layer along the length direction of the data transmission cable, and the aforementioned concave part is also arranged through the length direction of the data transmission cable.

Further, the metal shielding layer covers the upper and lower sides of the plastic layer, and in the thickness direction of the data transmission cable, the plastic layer is formed with the gaps on both radial sides of the middle ground wire, located on the upper and lower sides of the plastic layer. The metal shielding layers all have the above-mentioned concave parts extending into the gap and contacting and connecting with the upper and lower ends of the middle ground wire.

Further, at least two intermediate ground wires are spaced between the signal wires, and the gaps corresponding to two adjacent intermediate ground wires are located on different sides of the aforementioned central axis.

Further, in the thickness direction of the data transmission cable, the plastic layer has an upper surface and a lower surface parallel to each other, the central axis of the signal line and the center line of the plastic layer are in the same plane, and the middle ground line is longitudinally It is arranged close to the metal shielding layer, so that the radially outer end of the middle ground wire is in contact with the metal shielding layer.

Further, the metal shielding layer covers the upper and lower sides of the plastic layer, at least two intermediate grounding wires are arranged at intervals between the signal wires, and two adjacent intermediate grounding wires are arranged close to the metal shielding layers on different sides, and Contact and connect with the corresponding metal shielding layer.

Further, the wire further includes edge ground wires disposed at both ends along the width direction of the data transmission cable, and the edge ground wires are spaced apart from the metal shielding layer.

Further, the width of the metal shielding layer is greater than the circumferential extension length of the data transmission cable, and the two ends of the metal shielding layer in the width direction are relatively attached to each other at the middle position of the lateral side of the plastic layer, thereby forming a bonding part , the width of the bonding portion in the width direction of the data transmission cable is 0.1mm-0.4mm.

Further, the metal shielding layer has a first shielding film and a second shielding film which are separated from each other and arranged opposite to each other, and the first shielding film and the second shielding film cover the opposite sides of the plastic layer in a direction perpendicular to the wire arrangement direction. side, and neither side edges of the first shielding film and the second shielding film in the width direction extend beyond the plastic layer.

The beneficial effect of this creation is: this creation is set by electrically connecting the intermediate grounding line between the signal lines with the metal shielding layer, so that the metal shielding layer can not only shield the external electromagnetic interference, but also limit it to the inside after being grounded. The interference signal is guided away, the signal transmission environment is further purified, and the stability of signal transmission is improved.

100: data transmission cable

1: Wire

2: Plastic layer

3: Metal shielding layer

S: signal line

G1: middle ground wire

G2: Edge ground wire

11: Conductor

12: cladding layer

20: Gap

21: upper surface

22: lower surface

23: left surface

24: Right side surface

241: tip part

242: first surface

243: second surface

34: cover part

341: concave part

35:Fitting part

31: The first shielding film

32: Second shielding film

Fig. 1 is a three-dimensional schematic diagram of the first preferred embodiment of the data transmission cable of the present invention.

2 to 7 are six views of the data transmission cable shown in FIG. 1 .

Fig. 8 is a three-dimensional schematic diagram of the second preferred embodiment of the data transmission cable of the present invention.

9 to 14 are six views of the data transmission cable shown in FIG. 8 .

Fig. 15 is a schematic perspective view of the third preferred embodiment of the data transmission cable of the present invention.

16 to 21 are six views of the data transmission cable shown in FIG. 15 .

Fig. 22 is a schematic perspective view of the fourth preferred embodiment of the data transmission cable of the present invention.

23 to 28 are six views of the data transmission cable shown in FIG. 22 .

Fig. 29 is a schematic perspective view of the fifth preferred embodiment of the data transmission cable of the present invention.

30 to 35 are six views of the data transmission cable shown in FIG. 29 .

Fig. 36 is a schematic perspective view of the sixth preferred embodiment of the data transmission cable of the present invention.

Figure 37 to Figure 42 are six views of the data transmission cable shown in Figure 36.

Fig. 43 is a schematic perspective view of the seventh preferred embodiment of the data transmission cable of the present invention.

Figure 44 to Figure 48 are the front view, rear view, side view, top view and bottom view of the data transmission cable shown in Figure 43.

Fig. 49 is a three-dimensional schematic diagram of the eighth preferred embodiment of the data transmission cable of the present invention.

Figure 50 to Figure 52 are the front view, side view and end view of the data transmission cable shown in Figure 49.

Fig. 53 is a schematic perspective view of a ninth preferred embodiment of the data transmission cable of the present invention.

Figure 54 to Figure 57 are the front view, side view, top view and bottom view of the data transmission cable shown in Figure 53.

Fig. 58 is a three-dimensional schematic diagram of the tenth preferred embodiment of the data transmission cable of the present invention.

Figure 59 to Figure 63 are the front view, rear view, side view, top view and bottom view of the data transmission cable shown in Figure 58.

Fig. 64 is a three-dimensional schematic diagram of an eleventh preferred embodiment of the data transmission cable of the present invention.

Figure 65 to Figure 67 are the front view, side view and end view of the data transmission cable shown in Figure 64.

Fig. 68 is a three-dimensional schematic diagram of a twelfth preferred embodiment of the data transmission cable of the present invention.

Figure 69 to Figure 72 are the front view, side view, top view and bottom view of the data transmission cable shown in Figure 68.

Please refer to Fig. 1 to Fig. 72, the invention relates to a flat data transmission cable 100, the data transmission cable 100 includes a plurality of parallel conductive wires 1 arranged at intervals, and a plastic layer 2 integrally formed around the plurality of conductive wires 1 , the metal shielding layer 3 covering the outer side of the plastic layer 2 .

Wherein, the wire 1 has a plurality of signal lines S and an intermediate grounding line G1 arranged at intervals between the signal lines S, and in the thickness direction of the data transmission cable 100, the intermediate grounding line G1 is electrically connected to the metal shielding layer 3 .

Please refer to Figures 1 to 7, in the first preferred embodiment of the present invention, the signal lines S are arranged in pairs for transmitting differential signals, that is, the differential signal transmission wire group, and the middle grounding line G1 is arranged between two adjacent sets of differential signal transmission wires. The wire 1 also includes a data transmission cable along 100 edge ground wires G2 arranged at both ends in the width direction, so in this embodiment, the wires 1 are arranged side by side in the form of G2-S-S-G1-S-S-G2. However, in this embodiment, the edge ground line G2 is spaced apart from the metal shielding layer 3 .

Wherein, as shown in FIG. 6 and FIG. 7, in the signal line S and the edge grounding line G2 described in this embodiment, each wire 1 has a conductor 11 and an insulating coating layer 12 wrapped around the conductor 11. . Therefore, the signal line S and the edge ground line G2 can be closely arranged. In order to facilitate the electrical connection between the intermediate grounding wire G1 and the metal shielding layer 3, the intermediate grounding wire G1 described in this invention does not have the above-mentioned insulating coating layer, but only has a conductor, so that it is not necessary to remove part of the insulating coating layer to carry out electrical connection.

Further, in this embodiment, the central axes of the signal line S, the middle ground line G1 and the edge ground line G2 are located on the same plane, and the plastic layer 2 is formed at a position corresponding to the middle ground line G1 in the longitudinal direction. The metal shielding layer 3 covers the inner wall of the notch 20 where the middle ground line G1 is exposed to the outside, and is electrically connected to the middle ground line G1 through the notch 20 . In this way, the requirements of the present invention can be met without making major changes to the conventional molding process. Furthermore, the middle parts of the adjacent two sets of signal lines S can also be effectively protected.

Specifically, the plastic layer 2 is jointly formed on the outside of the plurality of wires 1 to form a common single insulating layer to insulate and fix all the wires 1; The surface 21 and the lower surface 22 , in other words, the upper surface 21 and the lower surface 22 are parallel to the plane where the central axes of the plurality of conductors 11 are located, so as to facilitate the bonding of the metal shielding layer 3 . In this embodiment, the above-mentioned notch 20 is formed on one side of the plastic layer 2 , so that the middle ground line G1 is exposed toward the direction of the metal shielding layer 3 , so as to form a contact connection with the metal shielding layer 3 . Preferably, the notch 20 is provided through the plastic layer 2 along the length direction of the data transmission cable 100 , thereby ensuring the stability of signal transmission throughout the entire length.

The cladding layer 12 and the plastic layer 2 are made of the same or similar materials; they are preferably made of the same material, so that the plastic layer 2 and the cladding layer 100 can be formed when the data transmission cable 100 is molded The combination of layer 12 is good, which can achieve good fusion, minimize the problem of delamination or air entry, and the molding effect is good. Further, the same kind of material is polyhydrocarbon compound, and further, the polyhydrocarbon compound is preferably polyethylene.

In addition, the above-mentioned coating layer 12 and plastic layer 2 can be set to be preferably made of plastic materials with a dielectric coefficient close to that of air, so that the impedance of the coating layer 12 and the plastic layer 2 can be made smaller, thereby providing a relatively high conductor 11. A good signal transmission environment reduces signal propagation delay, reduces crosstalk between signals, ensures high-speed and effective signal transmission, and reduces signal attenuation.

The above embodiment of the wire 1 with the coating layer 12 is preferably able to satisfy the requirement that in the thickness direction of the data transmission cable 100, the distance between the outer edge of the conductor 11 of the signal line S and the outer edge of the plastic layer 2 is 0.1 mm to 0.45mm, preferably 0.15mm to 0.25mm. The above-mentioned distance is also the distance between the conductor 11 and the metal shielding layer 3, which is one of the factors affecting the stable signal transmission of the signal line S, especially high-frequency data transmission. The smaller the distance, the smaller the impedance, and the high-frequency The better the performance, the smaller the thickness of the entire data transmission cable 100 , and the softer and thinner it is. However, if the thickness is too small, the molding process of the plastic layer 2 is more difficult, and the fixing effect of the conductor 11 may be affected, which will lead to problems such as the contact between the metal shielding layer 3 and the conductor 11 to form a short circuit. Well meet the needs of all aspects.

Of course, as another preferred embodiment of the present invention, the signal line S and the edge ground line G2 may also only include the conductor 11, that is, the covering layer 12 is not provided, and they are directly covered by the plastic layer 2 as a whole. Covering and insulation can also achieve the purpose of cost creation, and adopting this arrangement can further reduce the thickness of the plastic layer 2, so that the overall thickness of the data transmission cable 100 can be further reduced.

In this invention, preferably, the outer diameter of the conductor is 30 to 34 AWG. The outer diameters of the conductors 11 of the signal line S, the middle ground line G1 and the edge ground line G2 are the same, and are preferably set so that the ratio between the center-to-center distance of adjacent conductors 1 and the outer diameter of the conductors 11 is 1.4 to 2.8; through this setting relationship, the signal line S can be set to have the aforementioned differential signal for transmitting differential signals When the signal transmission wire group is used, the differential impedance between the wires 1 in the differential signal transmission wire group can be effectively reduced, effectively controlled within the generally required range of 75Ω to 110Ω, the coupling effect is enhanced, and the long-distance of high-frequency signals is ensured. transmission.

Please refer to FIGS. 1 to 7. In this embodiment, the metal shielding layer 3 is made of double-lead aluminum foil tape, and its width before covering the plastic layer 2 is greater than the circumferential extension length of the data transmission cable 100. The two ends of the double-lead aluminum foil tape in the width direction are relatively attached to the middle position of the lateral side of the plastic layer 2, so that the metal shielding layer 3 is formed with a covering part 34 covering the upper and lower sides of the plastic layer 2 And the fitting portion 35 that fits relatively. The covering part 34 completely covers the plastic layer 2 in the circumferential direction to achieve all-round shielding. In this creation, the bonding part 35 is fixed on one side, which is convenient for fixing and bonding, and can realize the shielding of the metal shielding layer 3. Tighten and fix to further ensure the tightness of the covering part 34 and the plastic layer 2 .

Wherein, the above-mentioned notch 20 is formed on one side of the thickness direction of the plastic layer 2. In this embodiment, it is formed by being recessed from the upper surface 21 of the plastic layer 2. Of course, it can also be set to be formed by recessing from the lower surface 22 of the plastic layer 2. A concave portion 341 recessed into the notch 20 is formed on the covering portion 34 of the layer 3 , and a ground connection is formed with the middle ground line G1 through the concave portion 341 .

In this creation, the metal shielding layer 3 is made of double-lead aluminum foil tape, and is fixed on the outside of the plastic layer 2 by hot-melting the back conductive adhesive layer of the double-lead aluminum foil tape through a heat sealer, and connected to the middle ground line G1 To achieve a conductive connection, this kind of fixing is relatively simple and convenient, without the intervention of the Mylar layer, so that the entire cable can be made thinner and softer; moreover, the air can be discharged during bonding, and because it is fixed by hot-melt bonding, Increase the bonding strength and tightness of the metal shielding layer 3 and the plastic layer 2, so that the exhausted air cannot enter, achieving a dense effect, and then achieving a tight coating, good high-frequency transmission performance, and soft and light effects.

When heat-sealing and fixing, the heat-sealing machine gradually heat-presses from one side of the width direction of the data transmission cable blank coated with the plastic layer 2 along the width direction, so that the metal shielding layer 3 is bonded and fixed on the outside of the plastic layer 2, and On the other side of the plastic layer 2 in the width direction, the metal shielding layer 3 is relatively attached and fixed.

The plastic layer 2 has the aforementioned upper surface 21 and lower surface 22 parallel to each other, and also has a left side surface 23 and a right side surface 24 located on both lateral sides of the plastic layer 2, and the left side surface 23 and the right side surface 24 are connected in an arc shape. After the two ends of the upper surface 21 and the lower surface 22 are heat-sealed and fixed to the outside of the plastic layer 2 by the metal shielding layer 4 , the shapes of the lateral sides of the plastic layer 2 are asymmetrical.

Specifically, the two ends in the width direction of the metal shielding layer 3 are relatively attached to the right side of the plastic layer 2, and the right side surface 24 is formed at the place where the plastic layer 2 is relatively attached to the metal shielding layer 3 There is a pointed portion 241 . The right side surface 24 includes a first surface 242 connecting the tip portion 241 and the right end of the upper surface 21, a second surface 243 connecting the tip portion 241 and the right end of the lower surface, the arc curvature of the first surface 242 and the second surface 243 The curvature of the arc is greater than that of the left side surface 23 .

The width of the bonding portion 35 in the width direction of the data transmission cable 100 is 0.1mm-0.4mm, and the minimum width is 0.1mm, which can ensure effective fixing and avoid edge cracking of the data transmission cable during use. , which will lead to shielding failure and ensure the stability of signal transmission; and the maximum width is set to 0.4mm, which can ensure the user experience effect, that is, the experience without edges as much as possible, and can be convenient in a limited space to ensure multiple data transmission lines The cables 100 will not interfere with each other when running in parallel.

Preferably, the width of the bonding portion 35 in the width direction of the data transmission cable is set to 0.15 mm-0.25 mm, so as to further improve the fixing and use experience of the bonding portion 35 .

Furthermore, the overall thickness of the metal shielding layer 3 in this invention can be set to 0.010 mm to 0.055 mm, so as to minimize the thickness of the entire data transmission cable 100 on the basis of realizing external shielding. Preferably, the overall thickness of the metal layer 3 is set at 0.015 mm to 0.025 mm.

Combining the above-mentioned overall arrangement of the conductor 11, the covering layer 12, and the plastic layer 2, and the thickness setting of the metal layer 3, the overall thickness of the data transmission cable 100 of the invention can be further controlled at 0.35 mm to 0.65 mm.

To sum up, in this invention, the intermediate grounding line G1 between the signal lines S is electrically connected to the metal shielding layer 3, so that the metal shielding layer 3 can not only shield external electromagnetic interference, but also limit the The internal interference signal is guided away to further purify the signal transmission environment and improve the stability of signal transmission.

Please refer to Fig. 8 to Fig. 14 and show the second preferred embodiment of the data transmission cable 100 of this invention, which is roughly the same as the configuration of the wire 1, the plastic layer 2 and the metal layer 3 in the first preferred embodiment. The only point is: in the thickness direction of the data transmission cable 100, the plastic layer 2 in this embodiment is formed with the gaps 20 on both radial sides of the middle ground line G1, and the metal shields located on the upper and lower sides of the plastic layer 2 The layers 3 extend into the gap 20 to contact the upper and lower ends of the middle ground wire G1, and the gaps 20 on both sides are set through the plastic layer 2 along the length direction of the data transmission cable 100. The noise in the plastic layer 2 on the upper and lower sides of the data transmission cable 100 can be eliminated nearby, further purifying the signal transmission environment of the data transmission cable 100 .

Please refer to Fig. 15 to Fig. 21 for the third preferred embodiment of the data transmission cable 100 of this invention, the difference between it and the setting in the first preferred embodiment is only: in the third preferred embodiment, the The central axis of the signal line S is on the same plane as the central line of the plastic layer 2 , and the intermediate grounding line G1 is arranged longitudinally close to the metal shielding layer 3 , so that the radially outer end of the intermediate grounding line G1 is in contact with the metal shielding layer 3 .

Please refer to FIG. 22 to FIG. 28 for the fourth preferred embodiment of the data transmission cable 100 of this invention. Compared with the first preferred embodiment, in the fourth preferred embodiment, the middle ground line G1 is connected to the signal line At least two gaps 20 corresponding to the two adjacent intermediate grounding lines G1 are arranged at intervals between the Ss, and are located on different sides of the aforementioned central axis.

Please refer to FIG. 29 to FIG. 35 for the fifth preferred embodiment of the data transmission cable 100 of this invention. Compared with the second preferred embodiment, in the fifth preferred embodiment, the middle ground line G1 is connected to the signal line At least two Ss are arranged at intervals, and the gaps 20 are formed on both radial sides of the middle ground wire G1 , and are electrically connected to the metal shielding layer 3 through the gaps 20 .

Please refer to FIG. 36 to FIG. 42 for the sixth preferred embodiment of the data transmission cable 100 of this invention. Compared with the third preferred embodiment, in the sixth preferred embodiment, the middle ground line G1 is connected to the signal line There are at least two Ss at intervals, and two adjacent middle ground wires G1 are arranged close to the metal shielding layers 3 on different sides, and are in contact with the corresponding metal shielding layers 3 .

Please refer to Fig. 43 to Fig. 72 for the seventh to twelfth preferred embodiments of the data transmission cable 100 of this invention. The corresponding embodiments are the same, and the main difference lies in: in the seventh to twelfth preferred embodiments, the overall cross-section of the plastic layer 2 after the wire 1 is integrally fixed is roughly rectangular, that is, the left side surface of the plastic layer 2 23 and the right side surface 24 are arranged vertically to the upper surface 21 and the lower surface 22, and the left side surface 23 and the right side surface 24 have the same structure, so only a side view is provided in the simple description of the drawings; the metal shielding layer 3 has mutual separation And the first shielding film 31 and the second shielding film 32 that are arranged oppositely, the first shielding film 31 and the second shielding film 32 cover the opposite side of the plastic layer 2 in the direction perpendicular to the direction in which the wires 1 are arranged, that is, cover the upper The surface 21 and the lower surface 22, and both sides of the first shielding film 31 and the second shielding film 32 in the width direction do not extend beyond the plastic layer 2; however, the first shielding film 31 and the second shielding film 32 The projections in the direction perpendicular to the arrangement direction of the wires 1 at least cover the signal line S and the middle ground line G1, and the two sides of the first shielding film 31 and the second shielding film 32 are in contact with the left side surface 23 of the plastic layer 2 Align with the right side surface 22 respectively.

To sum up, in this invention, the intermediate grounding line G1 between the signal lines S is electrically connected to the metal shielding layer 3, so that the metal shielding layer 3 can not only shield external electromagnetic interference, but after grounding, It can also guide away the internal interference signals, further purify the signal transmission environment, and improve the stability of signal transmission.

In particular, it needs to be pointed out that for those skilled in the art, the equivalent changes to this creation made under the teaching of this creation should still be included in the scope claimed by the patent scope of this creation application.

100: data transmission cable

3: Metal shielding layer

S: signal line

G1: middle ground wire

G2: Edge ground wire

11: Conductor

12: cladding layer

20: Gap

21: upper surface

22: lower surface

23: left surface

24: Right side surface

241: tip part

242: first surface

243: second surface

34: cover part

341: concave part

35:Fitting part

Claims (10)

A data transmission cable, comprising: a plurality of parallel conductive wires arranged at intervals, a plastic layer integrally formed around the plurality of conductive wires, and a metal shielding layer covering the outer side of the plastic layer; wherein the conductive wire has a plurality of signal wires and The intermediate grounding wire arranged between the signal wires is electrically connected to the metal shielding layer in the thickness direction of the data transmission cable. The data transmission cable as described in item 1 of the scope of the patent application, wherein the central axis of the signal line and the intermediate grounding line are on the same plane, and the position corresponding to the longitudinal direction of the plastic layer and the intermediate grounding line is formed for the intermediate grounding line In the notch exposed outward, the metal shielding layer is formed with a recessed notch and covers the recessed part of the inner wall of the notch, and the recessed part forms a ground connection with the middle ground line. The data transmission cable described in item 2 of the scope of the patent application, wherein the notch is arranged through the plastic layer along the length direction of the data transmission cable, and the aforementioned concave part is also arranged through the length direction of the data transmission cable. The data transmission cable described in item 3 of the scope of the patent application, wherein the metal shielding layer covers the upper and lower sides of the plastic layer, and in the thickness direction of the data transmission cable, the plastic layer is on both radial sides of the middle ground wire. The gaps are formed on both sides, and the metal shielding layers located on the upper and lower sides of the plastic layer have the aforementioned concave parts extending into the gaps and contacting and connecting with the upper and lower ends of the middle ground wire. The data transmission cable described in item 2 or item 3 of the scope of the patent application, wherein at least two intermediate ground wires are arranged at intervals between the signal wires, and the gaps corresponding to the two adjacent intermediate ground wires are located in the aforementioned different sides of the central axis. The data transmission cable described in item 1 of the scope of the patent application, wherein, in the thickness direction of the data transmission cable, the plastic layer has an upper surface and a lower surface parallel to each other, and the central axis of the signal line and the plastic layer The center lines are located on the same plane, and the middle ground line is arranged longitudinally close to the metal shielding layer, so that the radially outer end of the middle ground line is in contact with the metal shielding layer. The data transmission cable described in item 6 of the scope of the patent application, wherein the metal shielding layer covers the upper and lower sides of the plastic layer, and at least two of the intermediate grounding wires are arranged at intervals between the signal wires, and two adjacent to each other The middle grounding wire is arranged close to the metal shielding layers on different sides, and is in contact with the corresponding metal shielding layers. The data transmission cable as described in item 1 of the scope of the patent application, wherein the wire further includes edge grounding wires arranged at both ends along the width direction of the data transmission cable, and the edge grounding wires are spaced apart from the metal shielding layer. The data transmission cable described in item 1 of the scope of the patent application, wherein the metal shielding layer is made of double-lead aluminum foil tape, the width of the double-lead aluminum foil tape is greater than the circumferential extension length of the data transmission cable, and the double-lead aluminum foil tape is The two ends in the width direction are relative to each other at the middle position of one lateral side of the plastic layer to form a bonding portion, and the width of the bonding portion in the width direction of the data transmission cable is 0.1mm-0.4mm. The data transmission cable described in item 1 of the patent scope of the application, wherein, the metal shielding layer has a first shielding film and a second shielding film that are separated from each other and arranged opposite to each other, and the first shielding film and the second shielding film are in the The opposite side of the plastic layer is covered in a direction perpendicular to the wire arrangement direction, and neither side edges of the first shielding film and the second shielding film in the width direction extend beyond the plastic layer.

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