CN117950513A - Touch structure, display device and electronic equipment - Google Patents

Abstract

The invention discloses a touch structure, a display device and electronic equipment. The touch structure comprises a central area and a peripheral area positioned outside the central area, wherein the touch structure comprises a substrate, a first touch electrode and a second touch electrode which are positioned on the substrate, an insulating medium is arranged between the first touch electrode and the second touch electrode at intervals, and the first touch electrode is positioned in the central area and extends along a first direction; the second touch electrode comprises a plurality of central electrodes and at least one peripheral electrode, the central electrodes are located in the central area and extend along the second direction, an included angle is formed between the first direction and the second direction, the peripheral electrodes are located in the peripheral area, and the peripheral electrodes are provided with at least one fold line portion. Therefore, the three-dimensional annular edge touch structure is obtained, and the three-dimensional annular edge touch effect can be generated.

Description

Touch structure, display device and electronic equipment

Technical Field

The invention relates to the technical field of display, in particular to a touch structure, a display device and electronic equipment.

Background

With the development of display technology and the popularization of curved touch screens, touch wearing equipment such as sports watches can trigger specific application scenes by sliding the edges of a glass cover plate of the screen of the wearing equipment. In the related art, the function called as a digital wheel is, for example, setting the timing of an alarm clock, adjusting the brightness of a screen, playing the speed of music, switching multiple user interfaces, and the like by sliding left and right, which belong to the specific display of the application scene of the function.

However, in the existing wearable device, when a finger slides the edge profile of the three-dimensional glass cover plate, the application of the side sliding function of the three-dimensional cover plate cannot be realized at present, but only the two-dimensional touch control in a plane can be widely expanded and applied. The touch sensor is mainly realized based on a capacitive sensor, and the capacitive sensor is designed to generate unavoidable edge wrinkling when the side wall part of the three-dimensional cover plate is attached, so that the three-dimensional touch application cannot be widely realized.

Therefore, the current touch structure, display device and electronic device still need to be improved.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

In one aspect of the present invention, a touch structure is provided. The touch structure comprises a central area and a peripheral area positioned outside the central area, wherein the touch structure comprises a substrate, a first touch electrode and a second touch electrode which are positioned on the substrate, an insulating medium is arranged between the first touch electrode and the second touch electrode at intervals, and the first touch electrode is positioned in the central area and extends along a first direction; the second touch electrode comprises a plurality of central electrodes and at least one peripheral electrode, the central electrodes are located in the central area and extend along the second direction, an included angle is formed between the first direction and the second direction, the peripheral electrodes are located in the peripheral area, and the peripheral electrodes are provided with at least one fold line portion. Therefore, the touch structure can be conveniently applied to a display device with three-dimensional side walls, the three-dimensional annular edge touch structure is realized, and the three-dimensional annular edge touch effect can be realized.

According to the embodiment of the invention, the touch structure comprises a plurality of first touch electrodes which are arranged in parallel, each folding line part forms a half-surrounding area which is not overlapped with each other in the peripheral area, and each half-surrounding area is only provided with an extension line of one first touch electrode. Therefore, the three-dimensional annular edge touch effect can be generated.

According to the embodiment of the invention, the peripheral area surrounds the central area, the touch electrodes comprise first to fourth peripheral electrodes, the first to fourth peripheral electrodes are distributed along a clockwise direction, an extension line of one part of the second touch electrodes simultaneously passes through the first and fourth peripheral electrodes, and an extension line of the other part of the second touch electrodes simultaneously passes through the second and third peripheral electrodes. Therefore, the three-dimensional annular edge touch effect can be further improved.

According to the embodiment of the invention, the peripheral area at least partially surrounds the central area, the plurality of fold line parts are sequentially arranged in the peripheral area, the peripheral area comprises two peripheral electrodes, and the extension line of each first touch electrode only penetrates through one fold line part. Therefore, the three-dimensional annular edge touch effect can be further improved.

According to the embodiment of the invention, the central area is circular, and the projection of the fold line part of each peripheral electrode on the substrate covers an area of pi/4. Therefore, the three-dimensional annular edge touch effect can be further improved.

According to the embodiment of the invention, the first touch electrode and the second touch electrode are respectively provided with the leading-out terminals, the leading-out terminals of the touch structure are distributed along one side of the substrate, the peripheral electrode comprises a first connecting part, a folding line part and a second connecting part which are sequentially connected, the first connecting part extends from one side with the leading-out terminals to one end, close to the leading-out terminals, of the folding line part and is connected with the end part of the folding line part, the second connecting part extends from the folding line part to one side with the leading-out terminals and is connected with the other end part of the folding line part, and the second connecting part is positioned between the central area and the first connecting part and between the second connecting part and between the folding line part. Therefore, the three-dimensional annular edge touch effect can be further improved.

According to the embodiment of the invention, the semi-enclosed shape surrounded by the fold line part is at least one of triangle, trapezoid and semicircle. Therefore, the three-dimensional cover plate edge with different shapes and dimensions can be adapted.

According to the embodiment of the invention, the fold line part is provided with corners, and the inner angles at the corners are rounded corners. Therefore, the touch effect of the touch structure can be further improved.

According to the embodiment of the invention, a spacing area is arranged between the central area and the peripheral area, and the spacing area is a metal wiring area. Therefore, the touch effect can be further improved.

According to the embodiment of the invention, the first touch electrode and the second touch electrode are arranged in the same layer in the central area, an insulating layer is covered on one side of the first touch electrode and the second touch electrode far away from the substrate, the position where the projections of the first touch electrode and the second touch electrode intersect is electrically connected through a bridge point, and the bridge point penetrates through the insulating layer. Therefore, the touch effect can be further improved.

According to the embodiment of the invention, an insulating layer is arranged between the first touch electrode and the second touch electrode in the thickness direction of the substrate. Therefore, the touch effect can be further improved.

According to the embodiment of the invention, in the peripheral area, the peripheral electrode and the first touch electrode are formed by the same layer of metal. Therefore, the wiring structure of the peripheral area touch control structure can be further simplified.

In yet another aspect, the present invention provides a display device. The display device comprises the touch structure and the cover plate glass, wherein the cover plate glass is provided with a main body surface and a side wall connected with the main body surface, and the touch structure covers the main body surface and at least part of the area of the side wall. The display device has all the features and advantages of the aforementioned touch structure, and is not described herein. In general, the display device can realize a three-dimensional touch function.

According to the embodiment of the invention, a metal wire is arranged between the central area and the peripheral area of the touch electrode at intervals, and the metal wire comprises a ground wire. Therefore, the touch effect of the display device can be further improved.

In a further aspect of the invention, the invention proposes an electronic device comprising a display device as described above. The electronic device has all the features and advantages of the display device described above, and will not be described herein. In general, the electronic device can realize touch control in the three-dimensional direction of the display device.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 shows a schematic structural diagram of a touch structure in the related art;

FIG. 2 is a schematic diagram of a planar touch structure in the related art;

FIG. 3 is a schematic diagram of a touch structure according to an embodiment of the invention;

FIG. 4 is a schematic diagram of a touch structure according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a touch structure according to another embodiment of the invention;

FIG. 6 is a schematic view of a portion of a touch structure according to an embodiment of the invention;

FIG. 7 is a schematic view of a portion of a touch structure according to another embodiment of the invention;

fig. 8 is a schematic cross-sectional view of a portion of a touch structure according to another embodiment of the invention.

Reference numerals illustrate:

1000: a touch structure; 1100: a central region; 1200: a peripheral region; 100: a substrate; 110: a first touch electrode; 120: a second touch electrode; 121: a second touch electrode; 122: a peripheral electrode; 130: a metal wiring region; 131: and (5) metal wiring.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In one aspect of the present invention, a touch structure is provided. Referring to fig. 3, the touch structure has a central area 1100 (a circular area defined by a dashed box in the figure), and a peripheral area 1200 (an annular area defined by two circular dashed boxes in the figure) outside the central area. The touch structure includes a substrate (not shown), and first and second touch electrodes 110 and 120 disposed on the substrate. An insulating medium (not shown) is arranged between the first touch electrode and the second touch electrode. Wherein the first touch electrode is located in the central area and extends along the first direction, and the second touch electrode 120 includes a plurality of central electrodes 121 (121A-121E as shown in the figure) and at least one peripheral electrode 122 (122A and 122B as shown in the figure). The central electrode 121 is located in the central region and extends in a second direction, with an angle between the first direction and the second direction. For example, the first direction may be a horizontal direction shown in fig. 3, and the second direction may be a vertical direction shown in fig. 3. The peripheral electrode 122 is located in the peripheral region, and has at least one fold line portion. Therefore, the touch structure can realize a three-dimensional annular edge touch effect.

For the convenience of understanding, the principle of the present application capable of achieving the above-mentioned advantageous effects will be briefly described below:

As described above, referring to fig. 1, in the related art, although a user can slide the edge profile of the intelligent wearable display device by a finger, trigger a specific application scenario, for example, slide the finger left and right to set the timing of an alarm clock, adjust the brightness of a screen, speed of playing music, and switch multiple user interfaces. However, the current general capacitive sensor design cannot be applied to a three-dimensional annular product, but can only be controlled in a circular plane area of a dial plate such as a watch.

Referring to fig. 2, a two-dimensional touch structure 1000 'in the related art has a central area and a peripheral area located outside the central area, and the touch structure includes a substrate, and a plurality of first touch electrodes 110', second touch electrodes 121 'disposed in parallel on the substrate, wherein a metal trace 130' surrounds the peripheral area outside the central area, and a user can touch any position of the central area to realize coordinate reporting of a specific position. However, the touch structure needs to monitor the touch sites through the capacitive signals formed between the first touch electrode 110 'and the second touch electrode 121', and therefore cannot be attached to the surface of the curved surface like the OLED display module. Therefore, the touch structure can only realize position reporting in the plane of the touch glass cover plate, and cannot be applied to three-dimensional annular edge touch.

According to the touch structure provided by the invention, at least one peripheral electrode is added in the peripheral area, and the real-time coordinate reporting point of the three-dimensional annular edge touch function is realized by carrying out profiling design in a concave-convex saw-tooth shape by combining the three-dimensional attaching characteristic. Specifically, referring to fig. 3, each of the peripheral electrodes (122A and 122B as shown in the drawing) has at least one fold line portion. And the peripheral electrode is arranged in the peripheral area and has a nonlinear structure, so that the attaching function can be relatively and independently realized. And the peripheral area is provided with a plurality of broken line parts, so that the side edge of the curved surface can be better contoured. Thus, when the user's finger operates the touch area of the touch substrate, the position coordinate reporting can be realized through the feedback of the touch integrated circuit. Specifically, in the central area, the reporting of coordinates is realized by means of the conventional central electrodes, which may be linear first touch electrodes and second touch electrodes, and in the peripheral area 1200, the reporting is realized by using the peripheral electrodes and the first touch electrodes: referring to fig. 4, when the finger touch point is the first touch point P1 on the left side of the peripheral area. Therefore, coordinate point reporting and recognition of the sliding gesture position on the side face of the three-dimensional glass cover plate are realized.

According to an embodiment of the present invention, referring to fig. 4, a plurality of center electrodes 121 (121A-121F shown in the drawing) among a plurality of first touch electrodes (110A-110F shown in the drawing) arranged in parallel and a plurality of second touch electrodes arranged in parallel achieve touch sensing of a center area. In the central area, the touch surface is relatively flat, so that the plurality of parallel electrodes can be adopted for touch sensing. One of the first touch electrode and the second touch electrode may be a transmitting electrode, and the other one may be an sensing electrode. For example, the first touch electrode may be a receiving electrode and the second touch electrode may be a transmitting electrode. The touch structure proposed by the present invention is described in detail below by taking the case that the first touch electrode is only taken as a receiving electrode and the second touch electrode is taken as a transmitting electrode as an example:

In the peripheral region of the touch structure, a plurality of peripheral electrodes (122A and 122B as shown in the drawing) are provided. Each of the peripheral electrodes has a plurality of fold line portions (triangular portions at positions shown as contact positions P1 to P6 in the drawing). Each of the fold line parts forms a half-enclosed area which is not overlapped with each other in the peripheral area, and each half-enclosed area is provided with only one extension line of the first touch electrode 110. Therefore, when a touch event occurs in the peripheral area, the capacitance between the peripheral electrode and the first touch electrode correspondingly passing through the fold line part of the peripheral electrode is changed, so that the touch site can be confirmed. Specifically, an extension line of a first touch electrode may correspond to a semi-surrounding area of a peripheral area. Therefore, when a user touches the edge position with a finger, the touch coordinate can be determined by means of the change of the capacitance formed between the first electrode and the corresponding peripheral electrode, and accordingly, corresponding real-time coordinate reporting can be achieved.

Specifically, when the touch position is P1 in fig. 4, the corresponding fold line of the peripheral electrode 122B at P1 is deformed or the thickness of the insulating medium between the touch electrodes is compressed, so that the induced capacitance between the peripheral portions at the first touch electrode 121A and P1 is changed, and the position where the touch is performed can be determined to be the point P1 according to the peripheral electrode 122B and the first touch electrode 121A. Similarly, when a touch event occurs at point P2, the sensing capacitance between the peripheral electrode 122B and the first touch electrode 121B changes, so that the touch point can be confirmed as P2 according to the peripheral electrode 122B and the first touch electrode 121B. Therefore, the judgment of the touch control sites of the peripheral area can be realized according to the fold line parts of the plurality of peripheral electrodes and the first electrodes of which the extension lines span the fold line parts.

According to the embodiment of the invention, the specific number, arrangement mode, shape and number of the folding lines included in each peripheral electrode of the touch structure are not particularly controlled, and a person skilled in the art can determine the parameters of the peripheral electrodes according to the detection sensitivity to the touch event, the performance of the touch chip (TouchIC) and the like. For example, the peripheral region may surround or semi-surround the central region, and referring to fig. 5, the peripheral region may surround the central region, and the touch electrode includes first to fourth peripheral electrodes (122A to 122D as shown in the drawing). The first to fourth peripheral electrodes may be distributed in a clockwise direction so as to be distributed over an annular peripheral region, occupying upper left, upper right, lower right and lower left regions of the annular shape, respectively. At this time, the extension line of a part of the electrodes in the second touch electrode 121 may pass through two peripheral electrodes at the same time, that is, the upper half of the extension line passes through an upper peripheral electrode, and the lower half of the extension line passes through a lower peripheral electrode. Specifically, the extended lines of 121A to 121C of the first electrodes pass through the first and fourth peripheral electrodes 122A and 122D, and the extended lines of 121E to 121G of the first electrodes pass through the second and third peripheral electrodes 122B and 122C. Thus, the reporting of the touch points can be realized on the circumferential surface of the annular surface (contacts P1 to P12 as shown in the figure). Similarly, the number of the peripheral electrodes of the touch structure provided by the invention is at least one, and the specific number is not limited. The peripheral electrode has a folding line part with better profiling performance on one hand, and can be better attached at the position similar to the annular side edge of the watch on the other hand. Further, the fold line portion protrudes beyond the central region, and thus, the change in the induced capacitance between the first and second electrodes can be more favorably caused than in a shape in which the shape of the edge of the central region coincides with that of a circle or the like, and the touch effect can be improved. Therefore, the three-dimensional annular edge touch structure can be obtained, and real-time coordinate reporting points of the three-dimensional annular edge touch function can be realized.

According to an embodiment of the present invention, referring to fig. 3, a peripheral area at least partially surrounds the central area, a plurality of the fold line parts are sequentially arranged in the peripheral area, including two peripheral electrodes (122A-122B as shown in the drawing), and an extension line of each of the first touch electrodes 110 passes through only one of the fold line parts. Therefore, the three-dimensional annular edge touch structure is obtained, and real-time coordinate reporting points of the three-dimensional annular edge touch function can be realized.

According to an embodiment of the present invention, the central area may be circular, and the projection of the fold line portion of each of the peripheral electrodes (122A or 122B as shown in the drawing) on the substrate covers an area of pi/4. Therefore, the three-dimensional annular edge touch structure is obtained, and real-time coordinate reporting points of the three-dimensional annular edge touch function can be realized.

According to an embodiment of the present invention, referring to fig. 4 and 5, the first touch electrode 110 and the second touch electrode 121 each have an outgoing terminal, and the outgoing terminals of the touch structure are arranged along one side of the substrate, for example, may be located between the contacts P9 and P10 shown in fig. 5. The peripheral electrode 122 may include a first connection portion, the fold line portion, and a second connection portion connected in sequence. The first and second connection parts are used for forming two leading-out ends connected with an external circuit and connecting two terminals of the fold line part to form a continuous electrode structure. Specifically, the first connecting portion extends from one side of the lead-out terminal toward one end of the fold line portion near the lead-out terminal and is connected with an end portion of the fold line portion, the second connecting portion extends from the fold line portion toward one side of the lead-out terminal and is connected with the other end portion of the fold line portion, and the second connecting portion is located between the central area and the first connecting portion and between the second connecting portion and the fold line portion. Thus, the ends of the first connection portion and the second connection portion, which are not connected to the fold line portion, can be used for connection to an external circuit, realizing the function of the peripheral electrode.

According to an embodiment of the present invention, referring to fig. 4 to 6, the shape of the semi-enclosed area enclosed by the fold line portion is not particularly limited. For example, the shape of the semi-enclosed region may be at least one of triangular (as shown in fig. 3,4, 5), trapezoidal (as shown in fig. 6), and semicircular (not shown). For example, the semi-enclosed shape surrounded by the fold line part of one touch structure may be a single triangle, trapezoid or semicircle, or may be a triangle, trapezoid combination, triangle, semicircle combination, triangle, trapezoid, semicircle combination, or the like. Therefore, different shapes can be suitable for different three-dimensional cover plate edges, and three-dimensional attachment can be realized in a three-dimensional annular product.

According to an embodiment of the invention, referring to fig. 6-7, the fold line portion has corners, which may be rounded (as shown by the dashed box in fig. 7). In order to adapt to the special-shaped design of the edges of different three-dimensional cover plates, the inventor carries out special-shaped design on the corners of the folding line parts, the sizes of the corners of the edges can be flexibly changed according to different appearance conditions, and the same or different chamfering ranges can be kept. Thus, the invention can be realized in a wider application space.

According to an embodiment of the present invention, referring to fig. 4 and 5, the central area and the peripheral area may be further spaced by a metal routing area 130 (as a dotted area in the drawing). The area can be used for setting the wiring of the touch structure or the metal wiring required by the electronic equipment with the touch structure. For example, when the touch structure is used in an electronic device having a touch function screen such as a sports watch, the display panel of the screen may have therein a gate line, a data line, a circuit connection line for testing, an antistatic structure, etc. The metal trace regions 130 may be used to accommodate the opaque metal traces described above. Therefore, on one hand, the signal passing through the wiring does not influence the touch signal conduction of the touch structure, and on the other hand, the structure such as a grounding wire in the structure can be utilized to shield the signal of the electric signal in the central area of the screen, so that the touch function of the touch structure is improved.

Those skilled in the art will appreciate that the touch structure may have a substrate for supporting the touch electrode, such as a flexible PI substrate. The touch electrode is positioned on the substrate, and an insulating medium is arranged between the first electrode and the second electrode at intervals so as to prevent short circuit. According to an embodiment of the present invention, the first touch electrode 110 and the second touch electrode 121 may be disposed on the same layer or different layers in the central area on a plane perpendicular to the substrate of the touch structure. That is, the first touch electrode and the second touch electrode may be disposed in the same layer and are separated by an insulating medium therebetween, or disposed in different layers, with an insulating medium therebetween. When the first touch electrode 110 and the second touch electrode 121 are disposed in the same layer in the central area, an insulating layer may be covered on a side of the first touch electrode and the second touch electrode away from the substrate 100, and an electrical connection is implemented at a position where projections of the first touch electrode and the second touch electrode intersect through a bridge point, where the bridge point passes through the insulating layer. Specifically, the first touch electrode and the second touch electrode are in the same-layer structure, and jumper processing is performed at the crossing point to avoid short circuit: the first touch electrode and the second touch electrode extend along different directions, and an included angle is formed between the first touch electrode and the second touch electrode, and an intersection point is necessarily formed between the first touch electrode extending along the first direction and the central electrode in the second touch electrode extending along the second direction. At this time, the first electrode may be made continuous at the intersection point, while the second electrode is disconnected, and the second electrode is made continuous by a bridge point structure crossing the insulating layer (on the side of the insulating medium away from the substrate). When the first touch electrode 110 and the second touch electrode 121 are disposed at different layers in the central region, the first touch electrode 110 and the second touch electrode 121 are separated by an insulating layer in the thickness direction of the substrate 100. Specifically, the first touch electrode and the second touch electrode are in different layers. More specifically, the touch electrode having the aforementioned shape and structure may be formed by etching using two layers of metal. The peripheral electrode 122 of the peripheral region and the first touch electrode 110 may be formed of the same metal. Referring to fig. 8 (an interface structure of a portion shown by an oval dashed box in fig. 7), at a portion of the peripheral region, the peripheral electrode 122, the metal trace 131 of the metal trace region, and the first touch electrode 110 may be formed of the same metal layer. Since the first touch electrode 110 is not provided in the peripheral area, the peripheral electrode 122 and the first touch electrode 110 are disposed in the same layer.

The embodiment of the disclosure also provides a display device and electronic equipment, wherein the display device comprises the touch structure provided by any one of the embodiments. The display device may further include a cover glass having a main body surface and a sidewall connected to the main body surface, and the touch structure covers at least a partial area of the main body surface and the sidewall. The electronic equipment comprises the display device. Specifically, the electronic device may be an intelligent wearable device such as an intelligent watch, an intelligent glasses, an intelligent bracelet, and the like. It can be understood that the implementation principle and technical effect of the display device and the electronic device provided by the embodiments of the present disclosure are the same as those of the touch structure provided by any of the embodiments described above, and are not described herein.

In the description of the present invention, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the description of the present specification, reference to the term "one embodiment," "another embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. In addition, it should be noted that, in this specification, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (15)

1. A touch structure is characterized in that the touch structure is provided with a central area and a peripheral area positioned outside the central area, the touch structure comprises a substrate, a first touch electrode and a second touch electrode positioned on the substrate, an insulating medium is arranged between the first touch electrode and the second touch electrode at intervals,

The first touch electrode is positioned in the central area and extends along a first direction;

The second touch electrode comprises a plurality of central electrodes and at least one peripheral electrode, the central electrodes are located in the central area and extend along the second direction, an included angle is formed between the first direction and the second direction, the peripheral electrodes are located in the peripheral area, and the peripheral electrodes are provided with at least one fold line portion.

2. The touch structure according to claim 1, comprising a plurality of first touch electrodes arranged in parallel, wherein each of the fold line portions forms a half-enclosed area in the peripheral area, and each half-enclosed area has only an extension line of one of the first touch electrodes.

3. The touch structure of claim 2, wherein the peripheral region surrounds the central region, the touch electrodes include first to fourth peripheral electrodes, the first to fourth peripheral electrodes being distributed in a clockwise direction, an extension line of one portion of the first touch electrodes passing through the first and third peripheral electrodes simultaneously, an extension line of another portion of the first touch electrodes passing through the second and fourth peripheral electrodes simultaneously.

4. The touch structure of claim 2, wherein the peripheral region at least partially surrounds the central region, the touch structure comprises two peripheral electrodes, and an extension line of each of the first touch electrodes passes through only one of the fold line portions.

5. The touch structure of claim 4, wherein the central area is circular, and a projection of the polygonal line portion of each peripheral electrode on the substrate covers an area of pi/4.

6. The touch structure according to claim 5, wherein the first and second touch electrodes each have an outgoing terminal, the outgoing terminals of the touch structure are arranged along one side of the substrate, the peripheral electrode includes a first connection portion, the fold line portion, and a second connection portion, which are sequentially connected, the first connection portion extends from the side having the outgoing terminal toward one end of the fold line portion near the outgoing terminal and is connected to an end of the fold line portion, the second connection portion extends from the fold line portion toward the outgoing terminal and is connected to the other end of the fold line portion, and the second connection portion is located between the central area and the first connection portion and the fold line portion.

7. The touch structure according to any one of claims 2 to 6, wherein a semi-enclosed shape surrounded by the fold line portion is at least one of a triangle, a trapezoid, and a semicircle.

8. The touch structure of claim 7, wherein the fold line has corners that are rounded.

9. The touch structure of claim 1, wherein a spacing region is provided between the central region and the peripheral region, and the spacing region is a metal routing region.

10. The touch structure of claim 1, wherein the first and second touch electrodes are arranged on the same layer in the central region, and an insulating layer is covered on one side of the first and second touch electrodes away from the substrate, and an electrical connection is achieved through a bridge point passing through the insulating layer.

11. The touch structure of claim 1, wherein an insulating layer is spaced between the first and second touch electrodes in a thickness direction of the substrate.

12. The touch structure of claim 10 or 11, wherein the peripheral electrode and the first touch electrode are formed of the same layer of metal in the peripheral region.

13. A display device comprising the touch structure of any one of claims 1 to 12, and a cover glass,

The cover glass is provided with a main body surface and a side wall connected with the main body surface, and the touch structure covers at least partial areas of the main body surface and the side wall.

14. The display device of claim 13, wherein a metal trace is spaced between the central region and the peripheral region of the touch electrode, the metal trace including a ground line.

15. An electronic device, characterized in that the electronic device comprises the display device of claim 13 or 14.