WO2021174773A1

WO2021174773A1 - Touch device and manufacturing method therefor

Info

Publication number: WO2021174773A1
Application number: PCT/CN2020/111454
Authority: WO
Inventors: 陈运燊
Original assignee: 深圳市鸿合创新信息技术有限责任公司
Priority date: 2020-03-05
Filing date: 2020-08-26
Publication date: 2021-09-10
Also published as: CN111459344A; CN111459344B

Abstract

Embodiments of the present application provide a touch device and a manufacturing method therefor. The touch device comprises an annular outer frame and a transparent cover plate closing the opening of one end of the annular outer frame; a first electrode layer and a second electrode layer are provided in the annular outer frame; the first electrode layer and the second electrode layer are parallel to each other, but are not in contact with each other; the first electrode and the second electrode layer are wrapped with a transparent insulating filling layer that is filled in the annular outer frame; the first electrode layer comprises a plurality of parallel first metal wires; the second electrode layer comprises a plurality of parallel second metal wires; the first metal wires and the second metal wires are not parallel to each other; and the first metal wires and the second metal wires are respectively parallel to the transparent cover plate. By means of the touch device and the manufacturing method therefor, the structure of a touch screen and a manufacturing method are simplified, a material cost and a process cost are reduced, and the thickness of a product is synchronously reduced, thereby facilitating achieving the purpose of the light and thin design of a whole machine.

Description

Touch control device and manufacturing method thereof

Cross-references to related applications

This application claims the priority of the Chinese patent application 202010145633.7 entitled "Touch Device and Its Manufacturing Process" filed on March 5, 2020, and the entire content of this application is incorporated herein by reference.

Technical field

This application relates to the technical field of touch screens, in particular to a touch device and a manufacturing method thereof.

Background technique

The capacitive touch screen is a widely used touch screen solution, and it occupies a dominant position in various intelligent interactive display devices. The existing capacitive touch screen has a relatively complex structure, many layers, high material and process costs, and difficult control of the thickness, which results in a large thickness of the entire touch device, which does not meet the development requirements of lightness and thinness.

Summary of the invention

In order to overcome the shortcomings of the prior art, this application provides a touch device and a manufacturing method thereof, which simplifies the structure and manufacturing method of the touch screen, saves material costs and process costs, and simultaneously reduces the thickness of the product, which is beneficial to the realization of the whole machine The purpose of thin and light design.

To this end, an embodiment of the present application provides a touch control device, including a ring-shaped outer frame and a transparent cover that closes an opening at one end of the ring-shaped outer frame, wherein:

The first electrode layer and the second electrode layer are arranged inside the ring-shaped outer frame. The first electrode layer and the second electrode layer are parallel to each other and not in contact with each other. The first electrode layer and the second electrode layer are insulated by the transparent filling inside the ring-shaped outer frame. Packing layer;

The first electrode layer includes a plurality of parallel first metal wires, the second electrode layer includes a plurality of parallel second metal wires, the first metal wire and the second metal wire are not parallel to each other, the first metal wire, the second metal wire They are respectively parallel to the transparent cover plate, and the first metal wire and the second metal wire are respectively used for connecting external circuits.

In the embodiment of the present application, the ring-shaped outer frame may be provided with a plurality of first terminals arranged in pairs and used for connection with an external circuit, the paired first terminals are arranged oppositely, and one end of any first metal wire is fixed to the outer circuit. One of the first terminals is fixed, and the other end is fixed to the other one of the first terminals.

Optionally, the plurality of first terminals are not in contact with each other; optionally, any one of the first terminals is only used to fix a first metal wire.

Optionally, the first terminal is embedded in the peripheral wall of the annular outer frame, the inner peripheral surface of the annular outer frame is provided with a first outlet, and the end of the first metal wire passes through the first outlet and is fixed to the first terminal On; Optionally, the connecting end of the first terminal is exposed on the outer surface of the ring-shaped outer frame.

In the embodiment of the present application, the ring-shaped outer frame may be provided with a plurality of second terminals arranged in pairs and used for connecting with the external circuit, the pair of second terminals are arranged oppositely, and one end of any second metal wire is fixed to the pair. One of the second terminals is fixed to the other end of the pair of second terminals.

Optionally, the plurality of second terminals are not in contact with each other; optionally, any second terminal is only used to fix a second metal wire.

Optionally, the second terminal is embedded in the peripheral wall of the ring-shaped outer frame, the inner peripheral surface of the ring-shaped outer frame is provided with a second outlet, and the end of the second wire passes through the second outlet and is fixed to the second terminal On; the connecting end of the second terminal is exposed on the outer surface of the ring-shaped outer frame.

In the embodiment of the present application, the touch control device further includes a protective casing, which closes the annular outer frame away from the end opening of the transparent cover; or, the touch device further includes a display module, and the display module closes the annular outer frame away from One end of the transparent cover is open, where the display module may include a backlight module and a liquid crystal panel. The liquid crystal panel is fixed on the surface of the transparent insulating filling layer away from the transparent cover. The backlight module closes the ring-shaped outer frame away from the end of the transparent cover. .

In the embodiment of the present application, the transparent insulating filling layer may be filled and formed by a transparent insulating optical glue.

Optionally, the transparent insulating filling layer abuts against the transparent cover plate.

Optionally, the diameter of the first metal wire may be 10 to 20 microns.

Optionally, the diameter of the second metal wire may be 10 to 20 microns.

In the embodiment of the present application, the first metal wire extends in the first direction to be a straight metal wire, and the second metal wire extends in the second direction to be another straight metal wire, and the first direction and the second direction are perpendicular to each other.

The embodiment of the present application also provides a manufacturing method of a touch device, including:

A first electrode layer and a second electrode layer are respectively arranged inside a ring-shaped outer frame. The first electrode layer includes a plurality of parallel first metal wires, and the second electrode layer includes a plurality of parallel second metal wires. The wire and the second metal wire are not parallel to each other, and the first metal wire and the second metal wire are respectively parallel to the end surface of the annular outer frame;

Take a transparent cover to close the opening at one end of the ring frame;

Fill the inside of the ring-shaped outer frame with a transparent insulating material until the first electrode layer and the second electrode layer are completely wrapped.

In any embodiment of the manufacturing method of the touch device of the present application, the ring-shaped outer frame may have a plurality of first terminals arranged in pairs and used for connecting with an external circuit, and a plurality of first terminals arranged in pairs and used for connecting with an external circuit. The second terminal, respectively arranging the first electrode layer and the second electrode layer inside a ring-shaped outer frame includes:

Fixing one end of the first metal wire to one of the pair of first terminals, and fixing the other end to the other of the pair of first terminals;

One end of the second metal wire is fixed to one of the pair of second terminals, and the other end is fixed to the other of the pair of second terminals.

In the technical solution provided by the embodiments of the present application, a plurality of first metal wires are arranged in parallel to form a first electrode layer, and a plurality of second metal wires are arranged in parallel to form a second electrode layer, and a transparent insulating filling layer is filled and wrapped to realize the first electrode layer. The insulation protection between the electrode layer and the second electrode layer makes the first electrode layer and the second electrode layer form a mutual capacitance at the intersection. Therefore, the above-mentioned structure uses metal wires to realize the touch function, saves the two layers of transparent conductive film and the OCA water glue layer used to realize the adhesion between the layer structures required by the traditional structure, saves the material cost and the process cost, and reduces The thickness of the touch screen is conducive to the realization of the light and thin design of the whole machine.

Description of the drawings

In order to more clearly describe the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a touch device provided in Embodiment 1 of the application;

FIG. 2 is a schematic diagram of the structure at M of the touch device in FIG. 1;

FIG. 3 is a schematic diagram of a top view structure of the touch device in FIG. 1;

4 is a schematic diagram of a partial structure of the touch device in FIG. 1;

FIG. 5 is a schematic structural diagram of a touch device provided in Embodiment 2 of the application;

FIG. 6 is a process flow chart of the manufacturing method of the touch device provided in Embodiment 3 of the application.

In the drawings, the drawings are not drawn to actual scale.

Mark description:

1-ring frame, 11-first outlet, 12-second outlet, 2-transparent cover, 2A-first adhesive layer, 31-first metal wire, 41-second metal wire, 5-transparent Insulation filling layer, 6-first terminal, 7-second terminal, 81-backlight module, 82-liquid crystal panel.

Detailed ways

The implementation of the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation to The specific azimuth structure and operation cannot be understood as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

Example 1

1 to 4, this embodiment discloses a specific structure of a touch device, including a ring-shaped outer frame 1, a transparent cover plate 2, a first electrode layer, a second electrode layer, and a transparent insulating filling layer 5. Significantly reduce the number of structural layers and the amount of materials. Among them, the touch device may be a touch screen as an independent product, or an interactive device with a touch function, such as smart devices such as touch-sensitive mobile phones, tablet computers, and notebook computers.

In the embodiment of the present application, the ring-shaped outer frame 1 has a ring-shaped structure. On the one hand, it provides overall structural support; Lumen. Optionally, the annular outer frame 1 is made of profiles. The annular shape of the annular outer frame 1 is determined according to the desired product shape, such as a square ring, a circular ring or other special-shaped rings.

In the embodiment of the present application, the transparent cover plate 2 closes the opening at one end of the annular outer frame 1. The closing method can be specifically covering the end surface of the annular outer frame 1 or embedding and filling in the end opening of the annular outer frame 1, so that the end opening can be tightly sealed. The transparent cover plate 2 and the annular outer frame 1 can be fixed by a variety of connection methods, such as bonding, screw connection, pin connection, and the like. Optionally, the transparent cover plate 2 and the annular outer frame 1 are bonded and fixed by the first adhesive layer 2A. For example, the first glue layer 2A may be OCA water glue. The transparent cover plate 2 is made of a transparent material, for example, it can be a glass cover plate, a polymer transparent cover plate, or the like.

A first electrode layer and a second electrode layer are arranged inside the annular outer frame 1. The first electrode layer and the second electrode layer are parallel to each other and do not contact each other. At the same time, the first electrode layer and the second electrode layer are wrapped by a transparent insulating filling layer 5 filled inside the ring-shaped outer frame 1 to provide fixed protection for the first electrode layer and the second electrode layer, and make the first electrode layer and the second electrode layer Maintain insulation between electrode layers.

In the embodiment of the present application, the first electrode layer includes a plurality of parallel first metal wires 31, and the second electrode layer includes a plurality of parallel second metal wires 41. The first metal wire 31 and the second metal wire 41 are not parallel to each other, and the first metal wire 31 and the second metal wire 41 are parallel to the transparent cover plate 2 respectively. Correspondingly, the first metal wires 31 and the second metal wires 41 form a crisscross distribution, that is, the projections of the first metal wires 31 and the second metal wires 41 along the axial direction of the annular outer frame 1 keep intersecting. At each intersection, a mutual capacitance is formed between the first metal wire 31 and the second metal wire 41, so that the first electrode layer and the second electrode layer form a mutual capacitance at each intersection. Among them, the first metal wire 31 and the second metal wire 41 are respectively used to connect an external circuit. For example, the external circuit may be a drive/control circuit.

Optionally, the first metal wire 31 is a straight metal wire extending in the first direction, and the second metal wire 41 is another straight metal wire extending in the second direction. Here, the first direction and the second direction are perpendicular to each other. Optionally, the diameter of the first metal wire 31 is 10 to 20 microns, which not only ensures the structural strength and reliability, but also ensures a small size to avoid obstructing the visual effect. Similarly, the diameter of the second metal wire 41 is 10 to 20 microns.

In the embodiment of the present application, a plurality of first terminals 6 are provided on the annular outer frame 1. The plurality of first terminals 6 are arranged in pairs and used for connection with an external circuit. For example, the external circuit may be a drive/control circuit. One end of any first metal wire 31 is fixed to one of the pair of first terminals 6, and the other end is fixed to the other of the pair of first terminals 6. Thus, any first metal wire 31 is connected to an external circuit through a pair of first terminals 6. Among them, the pair of first terminals 6 are arranged opposite to each other.

Optionally, the plurality of first terminals 6 are not in contact with each other. Optionally, any one of the first terminals 6 is only used to fix a first metal wire 31 to form a one-to-one correspondence relationship to ensure a more regular distribution and connection.

Optionally, the first terminal 6 is embedded in the peripheral wall of the ring-shaped outer frame 1. The inner peripheral surface of the annular outer frame 1 is provided with a first outlet 11. The end of the first metal wire 31 passes through the first outlet 11 and is fixed on the first terminal 6. Wherein, the connection end of the first terminal 6 is exposed on the outer surface of the ring-shaped outer frame 1 so as to realize electrical connection with the external circuit. The first terminal 6 can be a male socket or a female socket. Optionally, the first terminal 6 is a female socket, which is plugged and fixed with a male socket of an external circuit to realize structural connection and circuit connection.

In the embodiment of the present application, a plurality of second terminals 7 are provided on the annular outer frame 1. The plurality of second terminals 7 are arranged in pairs and used for connection with an external circuit. For example, the external circuit can be a drive/control circuit board. One end of any second metal wire 41 is fixed to one of the pair of second terminals 7, and the other end is fixed to the other of the pair of second terminals 7. Thus, any second metal wire 41 is connected to the external circuit through a pair of second terminals 7. Among them, the pair of second terminals 7 are arranged opposite to each other.

Optionally, the plurality of second terminals 7 are not in contact with each other. Optionally, any second terminal 7 is only used to fix a second metal wire 41 to form a one-to-one correspondence relationship, ensuring a more regular distribution and connection.

Optionally, the second terminal 7 is embedded in the peripheral wall of the ring-shaped outer frame 1. The inner peripheral surface of the annular outer frame 1 is provided with a second outlet opening 12. The end of the second metal wire 41 passes through the second outlet 12 and is fixed on the second terminal 7. The connecting end of the second terminal 7 is exposed on the outer surface of the ring-shaped outer frame 1 so as to realize electrical connection with the external circuit. The second terminal 7 may be a male socket or a female socket. Optionally, the second terminal 7 is a female socket, which is plugged and fixed with the male socket of the external circuit to realize structural connection and circuit connection.

In the embodiment of the present application, the transparent insulating filling layer 5 is filled and formed by a transparent insulating optical glue. For example, the transparent insulating optical glue is a transparent optical water glue, namely OCA water glue, which has better flexibility.

In the embodiment of the present application, the touch device further includes a protective casing. The protective shell closes the opening at one end of the annular outer frame 1 away from the transparent cover plate 2, and its closed form is similar to that of the transparent cover plate 2, which will not be repeated here. In other words, the transparent cover plate 2 and the protective casing are separated from the two ends of the ring-shaped outer frame 1, so that the touch device can be completely packaged and can be independently applied to the touch function. The protective housing can be made of different materials, such as glass, plastic, metal, etc. Optionally, the protective shell abuts the transparent insulating filling layer 5 to provide structural support.

In use, when the user touches the transparent cover 2, the coupling between the first electrode layer and the second electrode layer near the touch point is affected, so that the capacitance between the first electrode layer and the second electrode layer at the intersection occurs Change. According to the change of the mutual capacitance, the two-dimensional coordinates of the touch point are calculated, so as to determine the real position of the touch point and realize the touch function. Wherein, one of the first electrode layer and the second electrode layer is a driving electrode for sending an excitation signal, and the other is a receiving electrode for receiving a signal.

Transparent conductive films are generally made of indium tin oxide (ITO) or silver nanowire (SNW, silver nanowire) materials, which are expensive to manufacture. The touch device of this embodiment does not need to use a transparent conductive film, so compared to the traditional structure that requires two layers of transparent conductive film, on the one hand, the amount of transparent conductive film is reduced, the material cost is greatly reduced, and the structure is reduced on the other hand. The number of layers and the amount of OCA water glue used to bond each structural layer further reduces the material cost and reduces the process cost, thereby effectively compressing the thickness of the touch screen and the thickness of the entire product, enabling the thin and light design to be realized.

Example 2

Please refer to FIGS. 1 to 5 in combination. This embodiment discloses a specific structure of a touch device, which has dual functions of touch and display. The difference between this embodiment and the first embodiment is that a display module is used to replace the protective casing, and the rest are the same. The rest of the similarities will not be repeated here.

In this embodiment, the touch control device further includes a display module. The display module closes the opening at one end of the annular outer frame 1 away from the transparent cover 2. The display module provides the display function, so that the touch device is an independent product capacitive touch screen or an interactive device with a touch display function, such as smart devices such as touch-sensitive mobile phones, tablet computers, and notebook computers. The closed form of the display module is similar to the transparent cover 2 and will not be repeated here.

Optionally, the display module includes a backlight module 81 and a liquid crystal panel 82. The liquid crystal panel 82 is fixed on the surface of the transparent insulating filling layer 5 away from the transparent cover 2. The backlight module 81 closes the opening at one end of the annular outer frame 1 away from the transparent cover 2. Among them, the backlight module generally includes a backplane and a light source. For example, the light source may be an LED light source.

Example 3

Please refer to FIGS. 1 to 6 in combination. This embodiment discloses a manufacturing method of a touch device for manufacturing the touch device disclosed in Embodiment 1 or 2. The manufacturing method includes the following steps:

Step A: The first electrode layer and the second electrode layer are respectively arranged inside a ring-shaped outer frame 1. Wherein, the first electrode layer includes a plurality of parallel first metal wires 31, and the second electrode layer includes a plurality of parallel second metal wires 41. The first metal wire 31 and the second metal wire 41 are not parallel to each other. The first metal wire 31 and the second metal wire 41 are respectively parallel to the end surface of the annular outer frame 1. The two ends of the first metal wire 31 are respectively fixed to the annular outer frame 1, and the two ends of the second metal wire 41 are also fixed to the annular outer frame 1 respectively.

Step B: Take a transparent cover 2 to close the opening at one end of the ring-shaped outer frame 1. The transparent cover 2 can close the opening at one end of the annular outer frame 1 in different ways, such as covering one end of the annular outer frame 1 or embedded filling to block the opening at one end of the annular outer frame 1. The transparent cover plate 2 can be fixed through different connection methods, and optionally, optical glue can be used to achieve adhesive fixation.

Step C: Fill the inside of the annular outer frame 1 with a transparent insulating material until the first electrode layer and the second electrode layer are completely wrapped. For example, turn the ring-shaped outer frame 1 whose one end has been closed by the transparent cover plate 2 upside down, so that the transparent cover plate 2 is located below the ring-shaped outer frame 1, and the end of the ring-shaped outer frame 1 away from the transparent cover plate 2 is opened on the upper side, from above. The opening of the end is filled with a transparent insulating material until the transparent insulating material passes through the first electrode layer and the second electrode layer, and then the transparent insulating material is cured to form a transparent insulating filling layer 5.

In some other embodiments, the ring-shaped outer frame 1 has a plurality of first terminals 6 arranged in pairs and used for connection with an external circuit and a plurality of second terminals 7 arranged in pairs and used for connection with an external circuit. In step A, "arranging the first electrode layer and the second electrode layer separately inside a ring-shaped outer frame 1" specifically includes:

Step A1: Fix one end of the first metal wire 31 to one of the pair of first terminals 6 and fix the other end to the other of the pair of first terminals 6;

Step A2: Fix one end of the second metal wire 41 to one of the pair of second terminals 7 and fix the other end to the other of the pair of second terminals 7.

It should be noted that step A and step B are in no particular order, and steps A1 and A2 are also in no particular order. In an example, the manufacturing method may further include the following steps:

The protective shell or the display module is closed at one end of the annular outer frame 1 away from the transparent cover 2. The protective shell or the display module can be fixed to one end surface of the ring-shaped outer frame 1 through different connection methods, and optionally, optical glue can be used for bonding and fixing. When the transparent insulating material filling the first electrode layer and the second electrode layer in the annular outer frame 1 is an optical glue, the transparent insulating material can be directly used to bond and fix the protective casing or the display module. When closed with a protective shell, a pure touch screen product with only touch function is obtained. When the display module is used for sealing, a touch screen product with both touch function and display function is obtained.

The above process does not need to bond multiple layers of transparent conductive films layer by layer, which greatly simplifies the structure process, reduces production time, improves labor productivity, and saves process costs.

Finally, it should be noted that the above specific implementations are only used to illustrate the technical solutions of the application and not to limit them. Although the application has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the application can be implemented Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of this application shall be covered by the scope of the claims of this application.

Claims

The touch device includes a ring-shaped outer frame and a transparent cover that closes an opening at one end of the ring-shaped outer frame. A first electrode layer and a second electrode layer are arranged inside the ring-shaped outer frame. The electrode layers are parallel to each other and do not contact each other, and the first electrode layer and the second electrode layer are wrapped by a transparent insulating filling layer filled inside the annular outer frame;

The first electrode layer includes a plurality of parallel first metal wires, the second electrode layer includes a plurality of parallel second metal wires, the first metal wires and the second metal wires are not parallel to each other, so The first metal wire and the second metal wire are respectively parallel to the transparent cover plate, and the first metal wire and the second metal wire are respectively used to connect an external circuit.
The touch device according to claim 1, wherein the ring-shaped outer frame is provided with a plurality of first terminals arranged in pairs and used for connecting with an external circuit, and the first terminals in a pair are arranged opposite to each other, any One end of the first metal wire is fixed to one of the pair of first terminals, and the other end is fixed to the other of the pair of first terminals; No contact, any one of the first terminals is only used to fix one of the first wires.
The touch device according to claim 2, wherein the first terminal is embedded in the peripheral wall of the ring-shaped outer frame, the inner peripheral surface of the ring-shaped outer frame is provided with a first outlet, and the first terminal is The end of a metal wire passes through the first outlet and is fixed on the first terminal; the connecting end of the first terminal is exposed on the outer surface of the annular outer frame.
The touch device according to claim 1, wherein the ring-shaped outer frame is provided with a plurality of second terminals arranged in pairs and used for connecting with an external circuit, and the pair of second terminals are arranged opposite to each other. One end of the second metal wire is fixed to one of the pair of second terminals, and the other end is fixed to the other of the pair of second terminals; Without contact, any one of the second terminals is only used to fix one of the second metal wires.
The touch device according to claim 4, wherein the second terminal is embedded in the peripheral wall of the ring-shaped outer frame, the inner peripheral surface of the ring-shaped outer frame is provided with a second outlet, and the first The ends of the two metal wires are fixed on the second terminal after passing through the second outlet; the connecting end of the second terminal is exposed on the outer surface of the annular outer frame.
The touch control device according to claim 1, further comprising a protective casing, the protective casing closing an opening of the annular outer frame away from the transparent cover.
The touch device according to claim 1, further comprising a display module which closes the opening of one end of the ring-shaped outer frame away from the transparent cover; the display module includes a backlight module and a liquid crystal A panel, the liquid crystal panel is fixed on a surface of the transparent insulating filling layer away from the transparent cover plate, and the backlight module closes the opening at one end of the ring-shaped outer frame away from the transparent cover plate.
4. The touch device according to claim 1, wherein the transparent insulating filling layer is formed by filling a transparent insulating optical glue, and the transparent insulating filling layer abuts the transparent cover plate.
8. The touch device according to any one of claims 1 to 8, wherein the diameter of the first metal wire is 10 to 20 microns; and/or the diameter of the second metal wire is 10 to 20 microns.
The touch device according to any one of claims 1 to 8, wherein the first metal wire extends in a first direction to be a straight metal wire, and the second metal wire extends in a second direction to be another metal wire. For straight metal wires, the first direction and the second direction are perpendicular to each other.
The manufacturing method of touch device, including:

A first electrode layer and a second electrode layer are respectively arranged inside an annular outer frame, the first electrode layer includes a plurality of parallel first metal wires, and the second electrode layer includes a plurality of parallel second metal wires , The first metal wire and the second metal wire are not parallel to each other, and the first metal wire and the second metal wire are respectively parallel to the end surface of the annular outer frame;

Take a transparent cover to close the opening at one end of the ring-shaped outer frame;

Filling the inside of the annular outer frame with a transparent insulating material until the first electrode layer and the second electrode layer are completely wrapped.
The method of manufacturing a touch device according to claim 11, wherein the ring-shaped outer frame has a plurality of first terminals arranged in pairs and used for connecting with an external circuit, and a plurality of first terminals arranged in pairs and used for connecting with an external circuit. The second terminal, wherein the first electrode layer and the second electrode layer are respectively arranged inside a ring-shaped outer frame include:

Fixing one end of the first metal wire to one of the pair of first terminals and fixing the other end to the other of the pair of first terminals;

One end of the second metal wire is fixed to one of the pair of second terminals, and the other end is fixed to the other of the pair of second terminals.