Novel touch film

Abstract

The utility model discloses a novel touch control film which comprises a touch control film body, a wiring area is arranged on the touch control film body, wire grids are distributed in the wiring area, an outgoing line wiring area connected with the wire grids is arranged on one side of the wiring area, a flexible circuit board is arranged on one side of the touch control film body, and fine wires in the outgoing line wiring area are welded to a welding disc of the flexible circuit board. Each fine wire comprises a series of multi-layer bent oblique line sections with a certain inclination angle relative to the vertical direction; according to the utility model, the path length of the lead can be effectively increased by the oblique line segment included in the fine lead, so that the welding firmness and the conductive performance are improved, the mechanical strength of the lead can be enhanced, the fracture risk caused by bending or stretching is reduced, and the overall reliability is improved; the micro wires are arranged in the form of oblique line segments, and the inclination angle is controlled between 20 degrees and 70 degrees, so that denser wiring can be realized in a limited space, and the space utilization rate is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch film technical field, concretely is a novel touch film. BACKGROUND

[0002] Touch film is generally composed of PET film, wire material, control circuit board and driving software. Among them, the wire material is encapsulated in the PET film according to certain rules to form a sensing matrix, which is used to sense touch action. These wires are connected to the control circuit board through a specific connection method to realize signal transmission and processing.

[0003] Generally, the micro-wire in the wire material can be welded in a straight line on the solder pad of the flexible circuit board. When the micro-wire is short and the distance between the soldering points is close, the straight line is a common way. However, the micro-wire completely adopts the straight line welding method, which has the following defects: on the one hand, the mechanical strength of the wire with small welding area is low, and the risk of fracture caused by bending or stretching is high; on the other hand, the space utilization rate of the solder pad is low, and the local inductance or capacitance is also low. SUMMARY

[0004] The purpose of the utility model is to solve the problem that the micro-wire completely adopts the straight line welding method, which has the following defects: on the one hand, the mechanical strength of the wire with small welding area is low, and the risk of fracture caused by bending or stretching is high; on the other hand, the space utilization rate of the solder pad is low, and the local inductance or capacitance is also low.

[0005] The utility model realizes the above-mentioned purpose through the following technical scheme: a novel touch film, comprising a touch film, a wiring area is arranged on the touch film, a wire grid is arranged in the wiring area, an outgoing line wiring area connected with the wire grid is arranged on one side of the wiring area, a flexible circuit board is arranged on one side of the touch film, and a micro-wire in the outgoing line wiring area is welded on the solder pad of the flexible circuit board. Each micro-wire contains a series of slanted segments which are multi-layered, bent and have a certain inclination angle relative to the vertical direction.

[0006] Further, the slanted segments contained in the micro-wire are sawtooth-shaped.

[0007] Further, the inclination angle of the slanted segments contained in the micro-wire relative to the vertical direction is 20°-70°.

[0008] Further, the slanted segments contained in the micro-wire are welded on the solder pad of the flexible circuit board.

[0009] Further, the wire grid is a rectangular grid formed by staggered metal wires.

[0010] Further, the diameter of the micro-wire is 3-8 microns.

[0011] Further, the touch film is made of PET and OCA materials, and the touch film is a rectangular film.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. By designing the micro-wire into a series of multi-layered bent and inclined segments with a certain angle of inclination relative to the vertical direction, the path length of the wire can be effectively increased, thereby improving the welding strength and also improving the electrical conductivity. This design also enhances the mechanical strength of the wire, reduces the risk of breakage caused by bending or stretching, and improves overall reliability.

[0014] 2. By arranging the micro-wire in the form of inclined segments and controlling the angle of inclination between 20°-70°, more dense wiring can be achieved in a limited space, optimizing space utilization. At the same time, this design makes the welding of the wire on the flexible circuit board more stable, enhancing the flexibility and adaptability of the touch film.

[0015] 3. The zigzag micro-wire helps to relieve stress. In flexible circuit boards or other circuit applications that require a certain degree of flexibility, when the circuit board is bent or deformed, the zigzag wire can disperse stress through its shape change, reducing the risk of wire breakage. The zigzag wire can also be designed to increase local inductance or capacitance to meet specific circuit parameter requirements. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 It is Figure 2 It is an enlarged view of part A.

[0019] In the figure: 1-touch film, 2-wiring area, 3-wire grid, 4-lead-out wire wiring area, 5-flexible circuit board, 41-micro-wire. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] In the description of the utility model, need understanding is, the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the orientation or positional relation indicated is based on the orientation or positional relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation to the utility model.

[0022] Combination Figures 1 to 3 As shown in one novel touch film, including touch film 1, the touch film 1 is equipped with wiring area 2, wiring area 2 is equipped with wire grid 3, one side of wiring area 2 is equipped with the lead-out wire wiring area 4 connected with wire grid 3, one side of touch film 1 is equipped with flexible circuit board 5, and micro-wire 41 in lead-out wire wiring area 4 is welded on the welding tray of flexible circuit board 5, and each micro-wire 41 contains a series of multi-layer bending and has a certain inclination angle of inclined segment relative to the vertical direction;

[0023] As shown in Figure 3 The inclination angle of the inclined segment contained by micro-wire 41 relative to the vertical direction is 20 °-70 °, and micro-wire 41 is arranged in the form of inclined segment, and more dense wiring can be realized in limited space;

[0024] As shown in Figures 2-3 The inclined segment contained by micro-wire 41 is sawtooth-shaped, and the inclined segment contained by micro-wire 41 is welded on the welding tray of flexible circuit board 5, when the circuit board is bent or deformed, the sawtooth-shaped wire can disperse stress by changing its shape and reduce the risk of wire breakage;

[0025] Wire grid 3 is the rectangular grid formed by the interlaced metal wires, the diameter of micro-wire 41 is 3-8 microns, and such small wire can realize efficient conductivity without significantly increasing the material cost;Touch film 1 adopts PET and OCA material and is designed as rectangular film, has good flexibility and durability.

[0026] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0027] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A novel touch film, comprising a touch film (1), wherein the touch film (1) is provided with a wiring area (2), wherein a wire grid (3) is provided in the wiring area (2), and wherein: A lead-out wiring area (4) connected to the wire grid (3) is provided on one side of the wiring area (2); a flexible circuit board (5) is provided on one side of the touch film (1); fine wires (41) in the lead-out wiring area (4) are welded to welding pads of the flexible circuit board (5); and each of the fine wires (41) comprises a series of multi-layered bends and oblique line segments with a certain inclination angle relative to the vertical direction.

2. The novel touch film according to claim 1, characterized in that: The oblique line segments included in the fine wire (41) are sawtooth-shaped.

3. The novel touch film according to claim 2, characterized in that: The oblique line segments contained in the fine wire (41) have an inclination angle of 20°-70° relative to the vertical direction.

4. The novel touch film according to claim 3, characterized in that: The oblique line segments included in the fine wire (41) are welded to the welding pads of the flexible circuit board (5).

5. The novel touch film according to claim 4, characterized in that: The wire grid (3) is a rectangular grid formed by interlaced metal wires.

6. The novel touch film according to claim 5, characterized in that: The diameter of the fine wire (41) is 3-8 microns.

7. The novel touch film according to claim 6, characterized in that: The touch film (1) is made of PET and OCA materials, and is a rectangular film.

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