TWM569092U - Flexible flat cable (FFC) with double-layer conductors - Google Patents

Abstract

A flat flexible cable having a double layer conductor includes a carrier layer, an upper conductor layer, an upper cladding layer, a lower conductor layer, and a lower cladding layer. The carrier layer has a reinforcing plate, an upper insulating layer and a lower insulating layer. The upper insulating layer is attached to the lower insulating layer, and the reinforcing plate is parallel to the upper insulating layer and the lower insulating layer, and is arranged side by side with the upper insulating layer and the lower insulating layer. The upper conductor layer is disposed on an upper surface of the carrier layer, and the upper conductor layer has a plurality of upper conductor lines. The upper cladding layer partially covers the upper conductor layer, wherein a portion of the upper conductor layer is exposed and located on one side of the reinforcing plate. The lower conductor layer is disposed on a lower surface of the carrier layer, and the lower conductor layer has a plurality of lower conductor lines. The lower cladding layer partially covers the lower conductor layer, wherein a portion of the lower conductor layer is exposed and located on the other side of the stiffener. The plurality of upper conductor lines are aligned in a one-to-one manner to the plurality of lower conductor lines.

Description

Flat flexible cable with double conductor

The present invention relates to a flat flexible cable having a double-layer conductor, and more particularly to a flat flexible cable having metal wires on both sides.

Flexible Flat Cable, referred to as flexible cable or FFC, can select the number and spacing of wires to reduce the size of electronic products. The flexible cable is a signal transmission component, which has the advantages of arbitrary deflection and high signal transmission capability, and thus is widely used in many electronic products.

Generally, the conventional flexible cable can be divided into three layers, which are formed by stacking the upper insulating layer, the wiring layer and the lower insulating layer in order from top to bottom. At present, the flat flat flexible cable is almost always a single-sided (row) wire layer, and there is still room for improvement in the use efficiency of the internal space of the electronic product.

The present invention provides a flat flexible cable with a double-layer conductor, which provides two-layer conductors on both sides of the flat flexible cable, which can effectively improve the space use efficiency.

In order to achieve the above, a flat flexible cable having a double-layer conductor provided by one embodiment of the present invention includes a carrier layer, an upper conductor layer, an upper cladding layer, a lower conductor layer, and a lower coating layer. Cladding. The carrier layer has a reinforcing plate, an upper insulating layer, and a lower insulating layer, the upper insulating layer is attached to the lower insulating layer, and the reinforcing The plate is parallel to the upper insulating layer and the lower insulating layer, and is juxtaposed with the upper insulating layer and the lower insulating layer. The upper conductor layer is disposed on an upper surface of the carrier layer, and the upper conductor layer has a plurality of upper conductor lines. The upper cladding layer partially covers the upper conductor layer, wherein a portion of the upper conductor layer is exposed and located on a side of the reinforcing plate. The lower conductor layer is disposed on a lower surface of the carrier layer, and the lower conductor layer has a plurality of lower conductor lines. The lower cladding layer partially covers the lower conductor layer, wherein a portion of the lower conductor layer is bare and located on the other side of the stiffener. Wherein the plurality of upper conductor lines are aligned to the plurality of lower conductor lines in a one-to-one manner.

Further, a holding plate is attached, and the holding plate is attached to the upper cladding layer or the lower cladding layer.

Further, one end of the upper cladding layer and the lower cladding layer are aligned with one ends of the upper insulating layer and the lower insulating layer.

Further, the carrier layer further includes a second upper insulating layer and a second lower insulating layer, the second upper insulating layer is attached to the second lower insulating layer, and the upper insulating layer and the lower layer The insulating layer is oppositely disposed at the other end of the reinforcing plate.

The beneficial effect of the present invention may be that the plurality of upper conductor lines provided by the present embodiment are aligned to the plurality of lower conductor lines in a one-to-one manner. This applies to the electrical connector with the upper and lower rows of terminals.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not intended to limit the creation.

1, 1', 1" ‧ ‧ flat soft cable

10‧‧‧bearing layer

12‧‧‧ Strengthening board

14a‧‧‧Upper insulation

14b‧‧‧lower insulation

14c‧‧‧Second upper insulation

14d‧‧‧Second lower insulation layer

20a‧‧‧Upper conductor layer

21‧‧‧Upper conductor line

20b‧‧‧lower conductor layer

22‧‧‧lower conductor line

30a‧‧‧Overlay

30b‧‧‧ under cladding

50‧‧‧ Holding plate

Figure 1 is a front elevational view of a flat flexible cable having a double layer conductor of the present invention.

Figure 2 is a side cross-sectional view of the flat flexible cable with a double layer conductor of the present invention.

Figure 3 is a side cross-sectional view of a flat flexible cable having a double layer conductor of a second embodiment of the present invention.

Figure 4 is a side cross-sectional view of a flat flexible cable having a double layer conductor in accordance with a third embodiment of the present invention.

[First Embodiment]

Please refer to FIG. 1 and FIG. 2 for a front view and a side cross-sectional view of a flat flexible cable having a double-layer conductor. The present invention provides a flat flexible cable 1 having a double layer conductor comprising a carrier layer 10, an upper conductor layer 20a, a lower conductor layer 20b, an upper cladding layer 30a, and a lower cladding layer 30b.

The carrier layer 10 has a reinforcing plate 12, an upper insulating layer 14a, and a lower insulating layer 14b. The upper insulating layer 14a is attached to the lower insulating layer 14b. The reinforcing plate 12 is parallel to the upper insulating layer 14a and the lower insulating layer 14b, and The insulating layer 14a and the lower insulating layer 14b are arranged side by side. The reinforcing plate 12 may be made of a polyethylene terephthalate (PET) material, and the upper insulating layer 14a and the lower insulating layer 14b may be made of a PET material or a polyimide film (POLYIMIDE FILM; PI FILM). One of the features of the present invention is to provide a reinforcing plate 12 to which the partially exposed upper conductor layer 20a and the partially exposed lower conductor layer 20b are respectively attached to the upper and lower surfaces of the reinforcing plate 12.

The upper conductor layer 20a is disposed on the upper surface of the carrier layer 10, and the upper conductor layer 20a has a plurality of upper conductor wires 21. The upper conductor line 21 is a flat metal wire in this embodiment, and may include a plurality of signal lines for transmitting signals and a plurality of ground lines for grounding. However, the present creation is not limited thereto, and the number of the upper conductor wires 21 is at least one.

The upper cladding layer 30a partially covers the upper conductor layer 20a, whereby a portion of the upper conductor layer 20a is exposed and located on one side of the reinforcing plate 12. The upper cladding layer 30a may be made of a PET material or a PI film.

The lower conductor layer 20b is disposed on the lower surface of the carrier layer 10, and the lower conductor layer 20b has a plurality of lower conductor lines 22. The lower conductor line 22 is a flat metal wire in this embodiment, and may include a plurality of signal lines for transmitting signals and a plurality of ground lines for grounding. However, the present creation is not limited thereto, and the number of the lower conductor wires 22 is at least one.

The lower cladding layer 30b partially covers the lower conductor layer 20b, whereby a portion of the lower conductor layer 20b is exposed and located on the other side of the reinforcing plate 12. The lower cladding layer 30b may be made of a PET material or a PI film.

One ends of the upper cladding layer 30a and the lower cladding layer 30b are aligned with one ends of the upper insulating layer 14a and the lower insulating layer 14b. In other words, the reinforcing plate 12 of the present embodiment completely supports the exposed upper conductor wire 21 and lower conductor wire 22 in a corresponding manner.

Referring to FIG. 1, one of the features of the present invention is that the plurality of upper conductor lines 21 are aligned to the plurality of lower conductor lines 22 in a one-to-one manner.

In the manufacturing process, it is preferable that the upper conductor wire 21 and the lower conductor wire 22 are each guided by a wire roller, and are respectively attached to the upper insulating layer 14a and the lower insulating layer 14b. The upper insulating layer 14a is bonded to the lower insulating layer 14b. The upper cladding layer 30a and the lower cladding layer 30b each form a hollow portion during the winding process, and the upper conductor wire 21 and the lower conductor wire 22 are exposed, and then the reinforcing plate 12 is correspondingly placed therein. Between the upper conductor line 21 and the lower conductor line 22, and corresponds to the position of the hollow portion.

[Second embodiment]

Referring to Fig. 3, there is shown a side cross-sectional view of a flat flexible cable 1' having a double-layered conductor according to a second embodiment of the present invention. The difference from the above embodiment is that the flat flexible cable 1' of the embodiment further includes a holding plate 50, and the holding plate 50 is attached to the upper coating layer 30a, but is not limited thereto. It is also possible to attach to the lower cladding layer 30b. The grip plate 50 is held by the user to move the flat flexible cable.

[Third embodiment]

4 is a side cross-sectional view of a flat flexible cable 1" having a double-layer conductor according to a third embodiment of the present invention. The difference from the above embodiment is that the carrier layer 10 of the flat flexible cable 1" of the present embodiment is 10 A second upper insulating layer 14c and a second lower insulating layer 14d are also included. The second upper insulating layer 14c is bonded to the second lower insulating layer 14d, and is disposed opposite to the upper insulating layer 14a and the lower insulating layer 14b at the other end of the reinforcing plate 12. The second upper insulating layer 14c and the second lower insulating layer 14d are the same as the upper insulating layer 14a and the lower insulating layer 14b, and may be a PET material or a polyimide film (POLYIMIDE). Made by FILM; PI FILM).

In summary, the beneficial effect of the present invention may be that the plurality of upper conductor wires 21 provided by the present embodiment are aligned to the plurality of lower conductor wires 22 in a one-to-one manner. Therefore, the upper wire and the lower wire 22 can be respectively aligned with the upper row of terminals (not shown). With the lower row of terminals (not shown).

The above description is only a preferred and feasible embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Therefore, any equivalent technical changes made by using the present specification and the contents of the schema are included in the scope of protection of the present creation. .

Claims (4)

A flat flexible cable with a double-layer conductor includes: a carrier layer having a reinforcing plate, an upper insulating layer, and a lower insulating layer, the upper insulating layer being attached to the lower insulating layer, The reinforcing plate is parallel to the upper insulating layer and the lower insulating layer, and is juxtaposed with the upper insulating layer and the lower insulating layer; and an upper conductor layer disposed on an upper surface of the carrier layer The upper conductor layer has a plurality of upper conductor lines; an upper cladding layer partially covering the upper conductor layer, wherein a portion of the upper conductor layer is bare and located on the reinforcing plate a side surface; a lower conductor layer disposed on a lower surface of the carrier layer, the lower conductor layer having a plurality of lower conductor lines; and a lower cladding layer partially covering the lower cladding layer The lower conductor layer, wherein a portion of the lower conductor layer is bare and located on the other side of the stiffener; wherein the plurality of upper conductor wires are aligned in a one-to-one manner to the plurality of lower conductor wires. A flat flexible cable having a double-layer conductor according to claim 1, further comprising a holding plate attached to the upper cladding layer or the lower cladding layer. A flat flexible flexible wire having a double-layered conductor according to claim 1, wherein one ends of the upper cladding layer and the lower cladding layer are aligned with one ends of the upper insulating layer and the lower insulating layer. The flat flexible cable having a double-layer conductor according to claim 1, wherein the carrier layer further includes a second upper insulating layer and a second lower insulating layer, wherein the second upper insulating layer is attached to the second lower layer An insulating layer is disposed on the other end of the reinforcing plate opposite to the upper insulating layer and the lower insulating layer.