TWI785494B - Touch sensor and touch display module - Google Patents

Abstract

A touch sensor has a visible area and a peripheral area on at least one side of the visible area, and includes a substrate and a first touch electrode layer. The substrate has a hole area correspondingly located in the visible area, and the hole area has a first edge. The first touch electrode layer is disposed on the substrate and correspondingly located in the visible area. The first touch electrode layer includes a first electrode line extending along a first direction, and the first electrode line has a first portion close to the hole area and a second portion far from the hole area in the first direction. The first portion of the first electrode line is connected to the second portion of the first electrode line, and the first portion of the first electrode line is disposed adjacent the first edge along a contour of the hole area.

Description

Touch Sensor and Touch Display Module

The present disclosure relates to a touch sensor and a touch display module including the touch sensor.

With the rapid development of technology, various electronic devices (such as mobile phones, tablet computers, etc.) have integrated touch display functions. The display surface of the electronic device includes a visible area and a peripheral area, wherein the peripheral area is usually arranged around the visible area, and its range is defined by arranging a shielding layer to shield some peripheral leads and components corresponding to the peripheral area in the electronic device.

For example, the peripheral lead wires of the touch panel of the electronic device are correspondingly arranged in the peripheral area, so as to avoid visual impact due to visibility. In addition, electronic devices are usually provided with optical elements, such as front-facing lenses, light sensors, etc., and these optical elements are also arranged in the peripheral area and occupy more area of the peripheral area. In this way, the size of the peripheral area cannot be reduced easily, and thus the narrow frame design requirement of the electronic device cannot be met. Furthermore, since the arrangement of the optical elements will cause the problem of mechanical interference, it will affect the circuit layout of the touch panel. Therefore, it is one of the current development directions to provide a touch panel that can maintain the touch sensing function while satisfying the narrow frame requirement of the electronic device.

According to some embodiments of the present disclosure, the touch sensor has a visible area and a peripheral area disposed on at least one side of the visible area, and includes a substrate and a first touch electrode layer. The substrate is provided with a hole area correspondingly located in the visible area, and the hole area has a first edge. The first touch electrode layer is disposed on the substrate and correspondingly located in the visible area. The first touch electrode layer includes a first electrode line extending along the first direction, and the first electrode line has a first part close to the hole area and a second part away from the hole area in the first direction, wherein the first electrode The first part of the line is connected to the second part of the first electrode line, and the first part of the first electrode line is adjacent to the first edge along the outline of the hole area.

In some embodiments, the first touch electrode layer includes a matrix and metal nanostructures distributed in the matrix.

In some embodiments, the aperture area further has a second edge, and the portion of the second edge and the portion of the first edge are located on opposite sides of the aperture area.

In some embodiments, the first touch electrode layer further includes a second electrode line extending along the first direction, the second electrode line is adjacent to the first electrode line and arranged at intervals, and has holes close to the holes in the first direction. The first part of the area and the second part away from the hole area, wherein the first part of the second electrode line is connected to the second part of the second electrode line, and the first part of the second electrode line is adjacent to the hole area along the contour second edge.

In some embodiments, the distance between the first portion of the first electrode line and the first portion of the second electrode line is greater than the distance between the second portion of the first electrode line and the second portion of the second electrode line.

In some embodiments, at least a portion of the first portion of the first electrode wire is separated from at least a portion of the first portion of the second electrode wire by a hole area.

In some embodiments, the second portion of the first electrode line is substantially parallel to the second portion of the second electrode line.

In some embodiments, the distance between the first portion of the first electrode line and the first edge of the hole area is between 100 μm and 400 μm, and the distance between the first portion of the second electrode line and the second edge of the hole area is 100 μm to 400 μm. The distance is between 100 microns and 400 microns.

In some embodiments, the connection between the first part of the first electrode line and the second part of the first electrode line has a rounded corner, and the connection between the first part of the second electrode line and the second part of the second electrode line has a rounded corners.

In some embodiments, the first electrode line includes a plurality of branch lines arranged at intervals, and the branch lines are connected in parallel.

In some embodiments, if the plurality of branch lines meet the interference of the hole area at the same time in the first direction, the plurality of branch lines are merged into one and adjacent to the first edge of the hole area along the outline of the hole area.

In some embodiments, the first electrode line of the first touch electrode layer further has a third part, the second part and the third part of the first electrode line form two branches of the first electrode line, and the third part is connected to The first part of the first electrode line, so that the first part of the first electrode line is a part that combines a plurality of branch lines into one.

In some embodiments, the touch sensor further includes a second touch electrode layer, and the substrate has opposite first and second surfaces, wherein the first touch electrode layer and the second touch electrode layer are respectively disposed on the substrate Alternatively, both the first touch electrode layer and the second touch electrode layer are disposed on the side of the first surface or the second surface of the substrate, and are electrically insulated through an insulating layer.

In some embodiments, the second touch electrode layer includes a fifth electrode line extending along a second direction, the second direction is perpendicular to the first direction, and the fifth electrode line has a fifth electrode line close to the hole area in the second direction. A part and a second part away from the hole area, wherein the first part of the fifth electrode line is connected to the second part of the fifth electrode line, and the first part of the fifth electrode line is adjacent to the hole area along the contour of the hole area the edge of.

According to other embodiments of the present disclosure, the touch display module includes a display panel and the above-mentioned touch sensor, and the touch sensor is disposed on the display panel.

In some embodiments, the touch display module further includes a cover disposed on the touch sensor.

In some embodiments, the touch display module further includes a polarizing layer disposed between the display panel and the touch sensor or between the touch sensor and the cover.

In some embodiments, the display panel is provided with holes corresponding to the hole area.

In some embodiments, the touch display module further includes an optical component accommodated in the hole.

According to the above-mentioned embodiments of the present disclosure, since the touch sensor of the present disclosure has a corresponding hole area located in the visible area, when the above-mentioned touch sensor is integrated into a touch display module with optical functions, the touch Optical components (eg, lenses) of the display module can be arranged corresponding to the hole area. In this way, the space for disposing optical components in the peripheral area can be saved, thereby satisfying the requirement of narrow frame design of the touch display module. In addition, since the optical components of the touch display module are correspondingly arranged in the visible area, the peripheral lines of the touch sensor located in the peripheral area do not need to be arranged avoiding the optical components, and the bending of the peripheral area is not affected by the optical components. Limitations, so that the touch sensor can achieve more diverse bending design. On the other hand, due to the layout of the touch electrodes in the touch electrode layer and the design of the electrode pattern, the touch electrodes can still maintain good touch function while bypassing the hole area.

A plurality of implementations of the present disclosure will be disclosed in the following diagrams. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. That is to say, in some embodiments of the present disclosure, these practical details are unnecessary, and thus should not be used to limit the present disclosure. In addition, for the sake of simplifying the drawings, some well-known structures and components will be shown in a simple and schematic manner in the drawings. In addition, for the convenience of readers, the size of each element in the drawings is not drawn according to actual scale.

It should be understood that although the terms "first", "second" and "third" etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or or parts thereof shall not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section from each other. Thus, a "first element," "component," "region," "layer" or "section" hereinafter could also be termed a second element, component, region, layer or section without departing from the teachings herein. .

It should be understood that relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe one element's relationship to another element as shown in the drawings. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on "upper" sides of the other elements. Thus, the exemplary term "below" can encompass both an orientation of "below" and "upper," depending on the particular orientation of the drawing. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "below" or "beneath" can encompass both an orientation of above and below.

The disclosure provides a touch sensor having a hole area corresponding to a visible area and a touch display module integrated with the above touch sensor. When the above touch sensor is integrated into the touch display module, the optical components of the touch display module can be arranged corresponding to the hole area. Thereby, the space for disposing optical components in the peripheral area can be saved, thereby satisfying the requirement of the narrow frame design of the touch display module. In addition, due to the layout of the touch electrodes in the touch electrode layer and the design of the electrode pattern, the touch electrodes can still maintain good touch function while bypassing the hole area.

FIG. 1 shows a schematic top view of a touch sensor 100 according to some embodiments of the present disclosure. The touch sensor 100 includes a substrate 110 , a first touch electrode layer 120 and a peripheral circuit layer 130 . The touch sensor 100 has a visible area VA and a peripheral area PA, and the peripheral area PA is disposed on a side of the visible area VA. For example, the peripheral area PA may be a frame-shaped area disposed around the viewing area VA (covering the right side, left side, upper side and lower side). For another example, the peripheral area PA may also be an L-shaped area disposed on the left side and the lower side of the visible area VA. In some implementations, the substrate 110 is configured to carry the first touch electrode layer 120 and the peripheral circuit layer 130 , and may be, for example, a rigid transparent substrate or a flexible transparent substrate. Specifically, the material of the substrate 110 may include, but is not limited to, glass, acrylic, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, polyethylene terephthalate, polyethylene naphthalate Transparent materials such as glycol esters, cycloolefin polymers, cycloolefin copolymers, colorless polyimides, or combinations thereof.

In some embodiments, the substrate 110 is provided with a corresponding hole area H located in the viewing area VA. When the touch sensor 100 of the present disclosure is integrated into a device with optical functions (for example, a display, a mobile phone, or a tablet computer), the optical components of the device can be installed at positions corresponding to the hole area H , that is, there is no need to reserve a space for disposing optical components at the position of the device corresponding to the peripheral area PA, so as to meet the requirement of narrow frame design of the device. Compared with the conventional device in which the optical components are correspondingly arranged in the peripheral area PA, the device of the present disclosure can reduce the frame size (eg, the width of the peripheral area PA) by about 150% or more. In detail, when the touch sensor 100 of the present disclosure is integrated into a device with optical functions, the width of the peripheral area PA of the device can be designed to be about 1-3 mm. It should be understood that the hole region H of the substrate 110 of the present disclosure may be a solid area corresponding to the optical component, or may be a through hole corresponding to the optical component. The specific details and features of the hole area H will be described in more detail below.

In some embodiments, the first touch electrode layer 120 is disposed on the substrate 110 and correspondingly located in the visible area VA, and the peripheral circuit layer 130 is disposed on the substrate 110 and correspondingly located in the peripheral area PA. In some implementations, the first touch electrode layer 120 may include a plurality of elongated electrode lines L extending along the first direction D1 after being patterned, and the plurality of elongated electrode lines L may extend along the second direction D2 are arranged at intervals, wherein the first direction D1 and the second direction D2 are perpendicular to each other. In addition, the first touch electrode layer 120 may further extend to the peripheral area PA, and be in contact with the peripheral circuit layer 130 to form an electrical connection.

In some implementations, the first touch electrode layer 120 may include a matrix and a plurality of metal nanowires (also called metal nanostructures) distributed in the matrix. In some embodiments, the matrix can include a polymer or a mixture thereof, thereby imparting specific chemical, mechanical, and optical properties to the metal nanowires. For example, the matrix can provide good adhesion between the metal nanowires and the substrate 110 . As another example, the matrix can provide metal nanowires with good mechanical strength. In some embodiments, the matrix may include specific polymers, so that the metal nanowires have additional surface protection against scratches and abrasions, thereby improving the surface strength of the first touch electrode layer 120 . The specific polymer mentioned above can be, for example, polyacrylate, polyurethane, epoxy, poly(silicon-acrylic), polysiloxane, polysilane or combinations thereof. In some embodiments, the matrix may further include a cross-linking agent, a polymerization inhibitor, a stabilizer (including but not limited to an antioxidant or a UV stabilizer), a surfactant, or any combination of the above, so as to improve the first touch The anti-ultraviolet performance of the electrode layer 120 and prolong its service life.

It should be understood that "metal nanowires" as used herein is a collective noun, which refers to a collection of metal wires including a plurality of metal elements, metal alloys or metal compounds (including metal oxides), and the metal wires contained therein The number of metal nanowires does not affect the scope of protection claimed by this disclosure. In some embodiments, the cross-sectional size (such as the diameter of the cross-section) of a single metal nanowire may be less than 500 nm, preferably less than 100 nm, and more preferably less than 50 nm. In some embodiments, the metal nanowires have a large aspect ratio (ie, length:diameter of cross-section). Specifically, the aspect ratio of the metal nanowires may range from 10 to 100,000. In more detail, the aspect ratio of the metal nanowires may be greater than 10, preferably greater than 50, and more preferably greater than 100. In addition, other terms such as silk, fiber, or tube also have the above-mentioned cross-sectional dimensions and aspect ratios, and are also within the scope of the present disclosure.

FIG. 2A is a partially enlarged schematic diagram of the region R1 of the touch sensor 100 in FIG. 1 according to some embodiments of the present disclosure. Please refer to Figure 1 and Figure 2A at the same time. In some embodiments, each electrode line L may extend from the upper boundary of the viewable area VA to the lower boundary of the viewable area VA along the first direction D1, and be arranged at intervals along the second direction D2 corresponding to the viewable area VA. In some embodiments, the line width of each electrode line L can be between 1 micron and 200 microns, and the distance between adjacent electrode lines L (ie line pitch) can be between 10 microns and 400 microns, so that It has low line resistance and high light transmittance. As mentioned above, since the substrate 110 of the touch sensor 100 has a corresponding hole area H located in the visible area VA, the electrode line L adjacent to the hole area H can be configured to have a gap between the hole area H and the hole area H. Good compatibility. In more detail, the electrode lines L adjacent to the hole area H can be specially configured to avoid covering the hole area H, and can also be specially configured to maintain the line resistance required by the design. The specific arrangement of each electrode line L and the correlation between the arrangement and the above-mentioned effects will be described in more detail below.

In some embodiments, as shown in FIG. 2A , the first touch electrode layer 120 includes a first electrode line L1 adjacent to the hole region H. Referring to FIG. In some embodiments, the first electrode line L1 has a first portion L11 closer to the hole area H and a second portion L12 farther away from the hole area H in the first direction D1, and the first portion L11 and the second portion L12 connected to each other. In more detail, the first part L11 of the first electrode line L1 is directly adjacent to the first edge S1 of the hole area H, and is adjacent to the first edge S1 of the hole area H along the outline of the hole area H, However, the second portion L12 of the first electrode line L1 is not directly adjacent to the first edge S1 of the hole area H, and is generally in a straight line. It should be noted that "two elements (or two parts) directly adjacent" mentioned herein means that there is no other element (or other parts) between the two elements (or two parts). In some embodiments, the first electrode line L1 may have two second portions L12 respectively connected to two ends of the first portion L11 in the first direction D1, and the two second portions L12 are substantially mutually connected in the first direction D1. align.

In some embodiments, the first electrode line L1 includes a plurality of branch lines arranged at intervals, and these branch lines are connected in parallel. Specifically, the first electrode line L1 further has a third portion L13, and the second portion L12 and the third portion L13 of the first electrode line L1 form two branches of the first electrode line L1, that is, the first electrode line L1 The second part L12 and the third part L13 of the line L1 are arranged in parallel and spaced apart, and are connected in parallel (that is, the second part L12 and the third part L13 of the first electrode line L1 are connected to the same peripheral circuit). On the other hand, when the branch lines encounter the interference of the hole area H in the first direction D1 at the same time, the branch lines merge into one to be adjacent to the first edge of the hole area H along the contour of the hole area H S1. Specifically, the third portion L13 of the first electrode line L1 is connected to the first portion L11 of the first electrode line L1, so that when the second portion L12 and the third portion L13 of the first electrode line L1 encounter the interference of the hole area H at the same time The second portion L12 and the third portion L13 of the first electrode line L1 can be combined into the first portion L11 of the first electrode line L1 to be adjacent to the first edge S1 of the hole area H along the outline of the hole area H, That is to say, the first portion L11 of the first electrode line L1 is a portion that constitutes the branch lines (ie, the second portion L12 and the third portion L13 of the first electrode line L1 ) combined into one. In some embodiments, the first electrode line L1 may have two third portions L13 respectively connected to two ends of the first portion L11 in the first direction D1, and the two third portions L13 are substantially mutually connected in the first direction D1. align.

In some embodiments, the first touch electrode layer 120 further includes a second electrode line L2 adjacent to the hole region H. Referring to FIG. The second electrode line L2 also has a first portion L21 closer to the hole area H and a second portion L22 farther away from the hole area H in the first direction D1, and the first portion L21 and the second portion L22 are connected to each other. In some embodiments, the hole area H further has a second edge S2, and part of the second edge S2 and part of the first edge S1 are located on opposite sides of the hole area H, wherein the second edge of the second electrode line L2 A part L21 is directly adjacent to the second edge S2 of the hole area H, and is adjacent to the second edge S2 of the hole area H along the contour of the hole area H, while the second part L22 of the second electrode line L2 is not It is directly adjacent to the second edge S2 of the hole area H, and roughly presents a straight line. In other words, at least a portion of the first portion L11 of the first electrode line L1 is separated from at least a portion of the first portion L21 of the second electrode line L2 by the hole area H. In some embodiments, the second portion L22 of the second electrode line L2 is substantially parallel to the second portion L12 of the first electrode line L1 (eg, extends along the first direction D1 and is parallel to each other). Based on the above, the second electrode line L2 and the first electrode line L1 can be arranged around the hole area H to avoid blocking the hole area H and the optical components arranged corresponding to the hole area H.

In some embodiments, the second electrode line L2 includes a plurality of branch lines arranged at intervals, and these branch lines are connected in parallel. Specifically, the second electrode line L2 further has a third portion L23, wherein the connection between the first portion L21 of the second electrode line L2 and the second portion L22 constitutes a branch line of the second electrode line L2, and the third portion L23 constitutes a branch line of the second electrode line L2. The second electrode line L2 has another branch line, and the two branch lines are arranged at intervals. It should be noted that since the two branch lines of the second electrode line L2 do not meet the interference of the hole area H at the same time when extending in the first direction D1, the two branch lines of the second electrode line L2 do not need to be combined. Designed for one.

In some embodiments, the maximum width W of the hole region H in the second direction D2 is greater than the distance A2 between the second portion L12 of the first electrode line L1 and the second portion L22 of the second electrode line L2 . Therefore, when the first electrode line L1 and the second electrode line L2 are arranged around the hole area H, the distance A1 between the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 is greater than that of the first electrode line L1. The distance A2 between the second portion L12 of the line L1 and the second portion L22 of the second electrode line L2. In the embodiment shown in FIG. 2A, since the hole area H has a circular shape, the maximum width W of the hole area H is the diameter of the circle.

In some embodiments, there is a third edge S3 between the first edge S1 and the second edge S2 of the hole area H, and the first edge S1, the second edge S2, and the third edge S3 can be connected to each other to jointly surround A hole area H with a closed shape. In some embodiments, the third edge S3 of the hole area H may be exposed by the space between the first electrode line L1 and the second electrode line L2. More specifically, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are not adjacent to the third edge S3 of the hole area H along the outline of the hole area H. In other words, the first electrode lines L1 and the second electrode lines L2 are only adjacent to part of the edge of the hole area H along the outline of the hole area H. As shown in FIG. In some embodiments, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 may have different line lengths. For example, the line length X1 of the first portion L11 of the first electrode line L1 may be greater than the line length X2 of the first portion L21 of the second electrode line L2, and in this case, the length of the first edge S1 is greater than the length of the second edge S2 The length (as in the embodiment of Fig. 2A).

In some embodiments, the connection between the first part L11 and the second part L12 of the first electrode line L1 may have a rounded corner, and the connection between the first part L21 and the second part L22 of the second electrode line L2 may also have a rounded corner. horn. The design of the rounded corners can prevent the first electrode line L1 and the second electrode line L2 from excessive heat dissipation due to current accumulation at the above-mentioned connection (that is, near the hole area H), thereby reducing the occurrence of thermal effects and maintaining normal Touch sensing function. In some embodiments, the distance A3 between the first part L11 of the first electrode line L1 and the first edge S1 of the hole area H is between 100 microns and 400 microns, and the first part L21 of the second electrode line L2 The distance A4 from the second edge S1 of the hole area H is between 100 microns and 400 microns. The setting of the above distance can make the touch sensor 100 have touch resolution, reliability and production yield. In detail, when the above-mentioned distance is less than 100 microns, it may increase the difficulty in patterning the first part L11 of the first electrode line L1 and the first part L21 of the second electrode line L2, resulting in a decrease in production yield. The reliability test may not pass because the first part L11 of the first electrode line L1 and the first part L21 of the second electrode line L2 are too close to the hole area H; The arrangement of the electrode lines L is too sparse to provide the touch function, which reduces the touch resolution.

In some implementations, the first touch electrode layer 120 may further include a third electrode line L3 directly adjacent to the first electrode line L1 on the side of the first electrode line L1 opposite to the second electrode line L2 . The third electrode line L3 has a first portion L31 and a second portion L32 connected to each other, wherein the first portion L31 of the third electrode line L3 is adjacent to the first portion L11 of the first electrode line L1, and the second portion of the third electrode line L3 is adjacent to the first portion L11 of the first electrode line L1. The portion L32 is adjacent to the third portion L13 of the first electrode line L1. In some embodiments, the first portion L31 of the third electrode line L3 substantially extends along the first portion L11 of the first electrode line L1, and the second portion L32 of the third electrode line L3 may be substantially parallel to the first electrode line. The third part of L1, L13. Compared with the first electrode line L1, the third electrode line L3 is farther away from the hole area H, and will not encounter the interference of the hole area H when extending in the first direction D1, so the third electrode line L3 is able to The design is extended along the trend while maintaining a distance required for touch sensing from the first electrode line L1. The bending range of the first portion L31 of the third electrode line L3 is smaller than that of the first portion L11 of the first electrode line L1 (that is, it is closer to a straight line). On the other hand, the connection between the first portion L31 and the second portion L32 of the third electrode line L3 may have rounded corners, so as to prevent the third electrode line L3 from excessively dissipating heat due to current gathering at the connection, thereby reducing the occurrence of thermal effects.

In some embodiments, the first touch electrode layer 120 further includes a fourth electrode line L4 directly adjacent to the second electrode line L2 on the side of the second electrode line L2 opposite to the first electrode line L1 . Since the fourth electrode line L4 does not meet the interference of the hole area H when extending in the first direction D1, and can also maintain a distance required for touch sensing from the second electrode line L2 (the third part L23). , so the fourth electrode line L4 maintains the shape of a straight line extending along the first direction D1.

It should be understood that, except for the above-mentioned plurality of electrode lines L (namely, the first electrode line L1 to the fourth electrode line L4) adjacent to the hole area H, the first touch electrical layer 120 is far from the hole area H. The other plurality of electrode lines L can be arranged at intervals along the second direction D2 on the side of the third electrode line L3 facing away from the hole area H and the side of the fourth electrode line L4 facing away from the hole area H, and each An electrode line L is substantially straight.

It should be added that although the first electrode line L1 in this embodiment adopts the design of combining two branch lines into one, the line resistance of the first electrode line L1 will be higher than that of the design without using branch lines into one However, the first touch electrode layer 120 can make the first touch The line resistance of each electrode line L of the electrode layer 120 can be maintained close to the lower limit of the sensing range of a controller, so that even if the first electrode line L1 has a high resistance due to the design of combining two branch lines into one The wire resistance value can still be maintained within the range that can be sensed by the controller.

FIG. 2B and FIG. 2C are partially enlarged schematic views of the region R1 of the touch sensor 100 in FIG. 1 according to other embodiments of the present disclosure. It should be understood that the touch sensor 100 in FIG. 2B and FIG. 2C and the touch sensor 100 in FIG. 2A have substantially the same element configuration and connection relationship, materials and functions, so no more details are given here. Only the differences will be described in detail in this article. In addition, for the sake of simplification of the drawings, part of the electrode lines L are omitted in FIG. 2B and FIG. 2C , and only the first electrode line L1 closest to the hole area H and part of the second electrode line L2 are reserved.

Please refer to FIG. 2B first, at least one difference between the touch sensor 100 shown in it and the touch sensor 100 in FIG. 2A lies in the shape of the hole region H. Referring to FIG. Specifically, the hole area H in the touch sensor 100 in FIG. 2B has a rectangular (square) shape. In this embodiment, the first part L11 of the first electrode line L1 and the first part L21 of the second electrode line L2 are respectively arranged adjacent to the first edge S1 and the second edge of the hole area H along the outline of the hole area H. S2, to form a rectangle-like shape. Since in this embodiment, the hole area H has a rectangular shape, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 each have more than one bending point B. In some implementations, the bend B may have rounded corners, so as to prevent the first electrode line L1 and the second electrode line L2 from excessively dissipating heat due to current concentration at the bend B, thereby reducing the occurrence of thermal effects and maintaining Normal touch sensing functionality.

Please refer to FIG. 2C, at least one difference between the touch sensor 100 shown in it and the touch sensor 100 in FIG. 2A lies in the shape of the hole region H. Referring to FIG. Specifically, the hole region H in the touch sensor 100 in FIG. 2C has a pill shape. More specifically, the above-mentioned pill shape includes a rectangle and two semicircles, and the rectangle is sandwiched between the two semicircles. In this embodiment, the first part L11 of the first electrode line L1 and the first part L21 of the second electrode line L2 are respectively arranged adjacent to the first edge S1 and the second edge of the hole area H along the outline of the hole area H. S2, to form a shape similar to a pill type. In this embodiment, the hole area H has a pill-shaped shape, so the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are each a smooth curve (ie, without corners). In this way, the excessive heat dissipation of the first electrode line L1 and the second electrode line L2 due to current accumulation can be avoided, thereby reducing the occurrence of thermal effects, so as to maintain normal touch sensing functions.

It should be understood that the shape of the hole region H shown in FIGS. 2A to 2C is only an exemplary embodiment, and should not limit the present disclosure. In other embodiments, the hole area H may also have other appropriate shapes (such as ellipse or polygon, etc.), and each electrode line L may also be appropriately arranged in accordance with the shape of the hole area H. In the following description, touch sensors according to other embodiments of the present disclosure will be described.

FIG. 3 shows a schematic top view of a touch sensor 100a according to other embodiments of the present disclosure. FIG. 4 is a partially enlarged schematic diagram of the region R2 of the touch sensor 100 a in FIG. 3 according to some embodiments of the present disclosure. Please refer to Figure 3 and Figure 4 at the same time. In the embodiment shown in FIG. 3 and FIG. 4, the touch sensor 100a further includes a second touch electrode layer 122, and the first touch electrode layer 120 and the second touch electrode layer 122 are double-sided single-layer Configuration of electrode structures. More specifically, the first touch electrode layer 120 is disposed on the first surface (such as the upper surface) of the substrate 110, and the second touch electrode layer 122 is disposed on the second surface (such as the bottom surface) of the substrate 110, so that The first touch electrode layer 120 and the second touch electrode layer 122 are electrically insulated from each other. In some embodiments, the second touch electrode layer 122 also has an electrode pattern formed by a plurality of electrode lines L, and the aforementioned metal nanowires and matrix are present in each electrode of the second touch electrode layer 122 in line L. In some implementations, each electrode line L of the second touch electrode layer 122 may extend from the left boundary of the visible area VA to the right boundary of the visible area VA along the second direction D2, and correspond to the visible area VA along the first direction D1. are arranged at intervals in the area VA. In other words, the electrode lines L of the first touch electrode layer 120 and the electrode lines L of the second touch electrode layer 122 extend in different directions and vertically cross each other. In this way, touch sensing can be performed by detecting a signal change (such as capacitance change) between the first touch electrode layer 120 and the second touch electrode layer 122 .

In some implementations, the second touch electrode layer 122 includes fifth electrode lines L5 and sixth electrode lines L6 adjacent to opposite sides of the hole region H, and the fifth electrode lines L5 and sixth electrode lines L6 The second direction D2 has a first portion L51 , L61 closer to the pore area H and a second portion L52 , L62 farther away from the pore area H, respectively. The first portion L51 and the second portion L52 of the fifth electrode line L5 are connected to each other, and the first portion L61 and the second portion L62 of the sixth electrode line L6 are also connected to each other. Since the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 extend along the second direction D2, the respective first portions L51 and L61 of the fifth electrode line L5 and the sixth electrode line L6 are The outline of the hole area H is adjacent to the third edge S3 and part of the first edge S1 and the second edge S2 of the hole area H. It should be understood that the difference between the second touch electrode layer 122 and the first touch electrode layer 120 is only the extension direction and the arrangement direction, and the element configuration and connection relationship, materials and functions of the two are substantially the same, so here I won't go into details. For example, the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 respectively have the same element configuration and configuration as the first electrode line L1 and the second electrode line L2 of the first touch electrode layer 120. Connect relationships, materials, and functions.

On the other hand, in order to meet the requirement of capacitive sensing, the first touch electrode layer 120 and the second touch electrode layer 122 are partially staggered (that is, not completely overlapped) in the extending direction perpendicular to the substrate 110 . From the perspective of the first electrode line L1 and the second electrode line L2 of the first touch electrode layer 120 and the fifth electrode line L5 and sixth electrode line L6 of the second touch electrode layer 122, the first electrode line L1 and the sixth electrode line The respective second portions L12, L22 of the two electrode lines L2 partially overlap the respective first portions L51, L61 of the fifth electrode line L5 and the sixth electrode line L6; and the respective first portions of the first electrode line L1 and the second electrode line L2 The L11 and L21 are completely offset from the respective first portions L51 and L61 of the fifth electrode line L5 and the sixth electrode line L6 . In some embodiments, the distance A8 between the first part L51 and L61 of the fifth electrode line L5 and the sixth electrode line L6 and the edge of the hole area H may be greater than the distance A8 between the first part L1 and the second electrode line L2 respectively. The distance A7 between a part of L11 and L21 and the edge of the hole area H.

It is worth noting that, although not shown in the drawings, the touch sensor 100a with double-sided single-layer electrode structure in FIG. 3 can also have a rectangular shape and a pill shape as shown in FIG. Pore area H. On the other hand, the touch sensor 100a of the present disclosure may also adopt a single-side double-layer electrode structure. Specifically, both the first touch electrode layer 120 and the second touch electrode layer 122 are disposed on the side of the first surface or the second surface of the substrate 110 , and are electrically insulated through an insulating layer. It should be understood that the connection relationship, materials and functions of the components described above will not be repeated, and will be described first. In the following description, the manufacturing method of the touch sensor 100 will be further described by taking the touch sensor 100 shown in FIG. 1 and FIG. 2A as an example.

In some implementations, the manufacturing method of the touch sensor 100 includes steps S10 to S14, and the steps S10 to S14 can be performed sequentially. In step S10 , the substrate 110 is provided, wherein the substrate 110 has a first area and a second area respectively corresponding to the visible area VA and the peripheral area PA, and a hole area H is provided in the first area of the substrate 110 . In step S12 , a conductive layer is formed on the first region of the substrate 110 . In step S14, the conductive layer is patterned to form the first touch electrode layer 120, so that the first touch electrode layer 120 has first electrode lines L1 and second electrode lines L2, and part of the first electrode lines L1 and part of The second electrode line L2 is arranged adjacent to the edge of the hole area H along the outline of the hole area H. In the following description, the above steps will be described in more detail.

First, in step S10 , the substrate 110 is provided, wherein the substrate 110 has a first area and a second area respectively corresponding to the visible area VA and the peripheral area PA, and a hole area H is provided in the first area of the substrate 110 . In some embodiments, the distance A9 between the edge of the hole region H and the boundary between the first region and the second region is at least 100 microns. In this way, a certain distance between the hole area H and the boundary can be ensured to provide space for arranging at least one electrode line L sufficient for touch sensing and maintain touch resolution. In detail, when the above-mentioned distance A9 is less than 100 microns, the conductive layer between the hole area H and the boundary may be insufficient or difficult to pattern the conductive layer, thereby affecting the integrity of the electrode pattern near the hole area H performance, reducing the touch resolution.

Next, in step S12, a conductive layer containing at least metal nanowires (for example, a layer of silver nanowires, a layer of gold nanowires, a layer of copper nanowires or a layer of nanonic nickel wires) is coated on the substrate 110 first area. In some embodiments, the dispersion or slurry having metal nanowires can be formed on the substrate 110 by coating, and cured/dried, so that the metal nanowires are attached to the surface of the substrate 110, and then Shaped as a conductive layer disposed on the first region of the substrate 110 . After the above curing/drying step, the solvent in the dispersion or the slurry will volatilize, and the metal nanowires can be randomly distributed on the surface of the substrate 110; or preferably, the metal nanowires can be fixed on the surface of the substrate 110. The surface of the substrate 110 is not peeled off, thereby forming a conductive layer, and the metal nanowires in the conductive layer can contact each other to provide a continuous current path, thereby forming a conductive network. In other words, the metal nanowires are in contact with each other at crossing locations to form pathways for transferring electrons.

In some embodiments, the dispersion liquid or slurry includes a solvent, thereby uniformly dispersing the metal nanowires therein. Specifically, the solvent is, for example, water, alcohols, ketones, ethers, hydrocarbons, aromatic solvents (benzene, toluene, xylene, etc.) or combinations thereof. In some embodiments, the dispersion liquid may further include additives, surfactants and/or binders, so as to improve the compatibility between the metal nanowires and the solvent and the stability of the metal nanowires in the solvent. Specifically, additives, surfactants and/or binders can be, for example, carboxymethylcellulose, hydroxyethylcellulose, hypromellose, sulfosuccinate sulfonate, sulfuric acid ester, phosphoric acid ester, Fluorinated surfactants, disulfonates, or combinations thereof. The dispersion or slurry containing metal nanowires can be formed on the surface of the substrate 110 by any means, such as but not limited to screen printing, nozzle coating or roller coating. In some embodiments, a roll-to-roll process can be used to coat the dispersion or slurry containing metal nanowires on the surface of the continuously supplied substrate 110 .

In some embodiments, the metal nanowires can be further post-treated to improve the contact properties of the metal nanowires at the crossing point (for example, increase the contact area), thereby improving the electrical conductivity. Post-treatment may include, but is not limited to, steps such as heating, plasma, corona discharge, ultraviolet light, ozone, or pressure. Specifically, after curing/drying to form the conductive layer, a roller may be used to apply pressure thereon. In some embodiments, one or more rollers can be used to apply pressure to the conductive layer. In some embodiments, the applied pressure may be between 50 psi and 3400 psi, preferably between 100 psi and 1000 psi, between 200 psi and 800 psi, or between 300 psi and 500 psi. In some embodiments, the metal nanowires may be post-treated with heat and pressure at the same time. For example, a pressure of 10 psi to 500 psi (or preferably 40 psi to 100 psi) can be applied through the roller while heating the roller to 70°C to 200°C (or preferably 100°C to 175°C) to Improve the conductivity of metal nanowires. In some embodiments, the metal nanowires may be exposed to a reducing agent for post-treatment, for example, the metal nanowires composed of silver nanowires may preferably be exposed to a silver reducing agent for post-treatment. In some embodiments, the silver reducing agent may include a borohydride such as sodium borohydride, a boron nitrogen compound such as dimethylaminoborane, or a gaseous reducing agent such as hydrogen. In some embodiments, the exposure time may be between 10 seconds and 30 minutes, preferably between 1 minute and 10 minutes.

Subsequently, in step S14 , a patterning step is performed to define a pattern on the conductive layer, thereby forming the first touch electrode layer 120 located in the first region of the substrate 110 . In some embodiments, the conductive layer adjacent to the hole area H can be patterned into the first electrode line L1 and the second electrode line L2 extending on both sides of the hole area H, part of the first electrode line L1 and Part of the second electrode line L2 is arranged adjacent to the edge of the hole area H along the outline of the hole area H. As shown in FIG. In other words, when the patterning of the conductive layer is interfered (or blocked) by the hole area H, the patterning of the conductive layer is performed along the contour of the edge of the hole area H. Referring to FIG. In some embodiments, the conductive layer farther away from the hole area H can be patterned to form the aforementioned third electrode lines L3, fourth electrode lines L4, and each electrode line L having a substantially straight shape. . The detailed description of each electrode line L can refer to the content above, and will not be repeated here. In some embodiments, the conductive layer can be patterned by etching. When the metal nanowires in the conductive layer are silver nanowires, the etchant can be selected to etch silver components, for example, the main component of the etchant can be H ₃ PO ₄ (ratio of about 55% to about 70%) and HNO ₃ (approximately 5% to approximately 15%) to remove the silver metal material in the same process. In other embodiments, the main component of the etching solution may be ferric chloride/nitric acid or phosphoric acid/hydrogen peroxide.

After step S14 is performed, step S16 may be selectively performed according to actual needs, so that the hole region H located on the substrate 110 is formed into a through hole. In some embodiments, the through hole can be formed by punching, for example. After the above steps, the touch sensor 100 as shown in FIG. 1 can be formed, wherein the hole area H can be a solid area or a through hole.

In some variable implementations, different process sequences may be used to manufacture the touch sensor 100 of the present disclosure, so as to manufacture the touch sensor 100 in which the hole region H of the substrate 110 is a through hole. In detail, in this embodiment, the manufacturing method of the touch sensor 100 includes step S20 to step S26, and step S20 to step S26 may be performed sequentially. In step S20 , the substrate 110 is provided, wherein the substrate 110 has a first area and a second area respectively corresponding to the visible area VA and the peripheral area PA, and a hole area H is provided in the first area of the substrate 110 . In step S22 , a conductive layer is formed on the first region of the substrate 110 . In step S24 , the hole region H is formed into a through hole, and at this time, a hole corresponding to the through hole is formed in the conductive layer. In step S26, the conductive layer is patterned to form the first touch electrode layer 120, so that the first touch electrode layer 120 has first electrode lines L1 and second electrode lines L2, and part of the first electrode lines L1 and part of The second electrode line L2 is arranged adjacent to the edge of the through hole along the outline of the through hole. In the following description, only the adjusted steps will be described, and for the rest of the omitted parts, reference can be made to the description of the foregoing embodiments.

Since in step S22 to step S24, the conductive layer is first formed on the first region of the substrate 110, and then the through hole is formed in the substrate 110, so the conductive layer can be formed corresponding to the through hole when forming the through hole. position to form holes. In other words, the through holes of the substrate 110 and the holes of the conductive layer are formed in the same process. In some embodiments, the through holes of the substrate 110 and the holes of the conductive layer may be formed by stamping, for example. On the other hand, in step S26, the size of the hole can be expanded when patterning the conductive layer, so that the gap between the first electrode line L1 and the second electrode line L2 formed through patterning and the through hole of the substrate 110 There is a certain distance. After the above-mentioned steps, the touch sensor 100 of the present disclosure can also be formed, and the specific structure is as described above, which will not be repeated here.

In other variable implementations, different process sequences may also be used to manufacture the touch sensor 100 of the present disclosure. Specifically, the aforementioned step S22 and step S24 may be reversed. In detail, in this embodiment, the manufacturing method of the touch sensor 100 includes step S30 to step S36, and step S30 to step S36 may be performed sequentially. In step S30 , the substrate 110 is provided, wherein the substrate 110 has a first area and a second area respectively corresponding to the visible area VA and the peripheral area PA, and a hole area H is provided in the first area of the substrate 110 . In step S32, the hole region H is formed into a through hole. In step S34 , a conductive layer is formed on the first region of the substrate 110 . In step S36, the conductive layer is patterned to form the first touch electrode layer 120, so that the first touch electrode layer 120 has a first electrode line L1 and a second electrode line L2, and a part of the first electrode line L1 and a part The second electrode line L2 is arranged adjacent to the edge of the through hole along the outline of the through hole. In the following description, only the adjusted steps will be described, and for the rest of the omitted parts, reference can be made to the description of the foregoing embodiments.

Since in step S32 to step S34, the through hole is formed in the substrate 110 first, and then the conductive layer is formed in the first region of the substrate 110, so it is not necessary to form additional holes in the conductive layer. In addition, when forming the conductive layer, the location of the via hole can be selectively avoided. After the above steps, the touch sensor 100 of the present disclosure can also be formed. Since the manufacturing methods of the touch sensor 100 provided in this disclosure can make the touch sensor 100 have a certain yield rate, the process sequence can be flexibly adjusted according to actual needs, so as to improve the convenience of the process.

FIG. 5A is a schematic cross-sectional view of a touch display module 200 according to some embodiments of the present disclosure. In some implementations, the above-mentioned touch sensor (take the touch sensor 100a in FIG. 3 as an example) can be integrated into a touch display module 200 such as a display, a portable phone, and a tablet computer, etc., The touch display module 200 can have the aforementioned effects. In some implementations, the touch display module 200 has a display panel 210 and a touch sensor 100 a, and the touch sensor 100 a is disposed on the display panel 210 . In some embodiments, the display panel 210 may be, for example, an organic light emitting diode (OLED) panel. In some implementations, the display panel 210 can be flexible so as to realize the bending requirement of the touch display module 200 together with the touch sensor 100a.

In some implementations, the touch display module 200 further includes a cover plate 220 . The cover plate 220 and the display panel 210 jointly sandwich the touch sensor 100a therebetween. In the overall stacked structure, the touch sensor 100 a and the cover plate 220 are sequentially stacked on the display panel 210 . In some embodiments, the cover plate 220 may include a flexible material, which refers to a material with a certain strength and a certain flexibility in the industry, such as polyimide, polyether ester, polyamide, polycarbonate, polyvinyl chloride, polystyrene, polybutylene, polyethylene, polymethylmethacrylate, polyetherimide, polyether ether ketone, polybutylene terephthalate ester, polyethylene terephthalate, polytetrafluoroethylene, polyurethane, acrylic or combinations thereof. In this way, the cover plate 220 and the touch sensor 100a can jointly realize the bending requirement of the touch display module 200 .

In some implementations, the touch display module 200 further includes a polarizing layer 230 , which may be, for example, a liquid crystal coated polarizing layer. In some implementations, the polarizing layer 230 can be disposed between the display panel 210 and the touch sensor 100a. For example, the polarizing layer 230 can be directly formed on the surface of the display panel 210 , that is, a structural layer (not shown) of the display panel 210 is used as a base material to form the polarizing layer 230 . In some embodiments, the polarizing layer 230 can be flexible so as to realize the bending requirement of the touch display module 200 together with the touch sensor 100a.

In some implementations, the touch display module 200 further includes a protective layer 240 . The protection layer 240 can cover the entire surface of the touch sensor 100a, for example, that is to say, the protection layer 240 covers the first touch electrode layer 120 and the peripheral circuit layer 130 of the touch sensor 100a, and fills the adjacent Between the electrode line L and the adjacent peripheral lines to provide an electrical insulation effect. In some embodiments, the protection layer 240 may be a hard coating layer comprising insulating materials such as but not limited to non-conductive resins or other organic materials. In some embodiments, the protective layer 240 is flexible, so as to realize the bending requirement of the touch display module 200 together with the touch sensor 100a. In addition, an adhesive layer, such as an optically transparent adhesive, can be optionally provided between each layer to facilitate bonding between each layer.

For the above-mentioned layers, the display panel 210, the polarizing layer 230, and the protective layer 240 can respectively have holes O1-O3 corresponding to the hole area H of the touch sensor 100a, so that the optical components can correspond to the hole positions at the same time. Area H and holes O1~O3 are used for setting. For example, the optical components can be disposed on the surface of the display panel 210 facing away from the touch sensor 100a, and disposed corresponding to the hole area H and the holes O1-O3. In this way, the touch display module 200 can be formed with optical components corresponding to the visible area VA, thereby realizing the requirement of narrow frame design of the touch display module 200 . In some embodiments, the optical components can be further accommodated in the holes O1 - O3 according to actual requirements, and the actual accommodating depths of the holes O1 , O2 or even the hole O3 can be designed according to requirements.

FIG. 5B is a schematic cross-sectional view of a touch display module 200 a according to other embodiments of the present disclosure. At least one difference between the touch display module 200a in FIG. 5B and the touch display module 200 in FIG. 5A is that the polarizing layer 230 of the touch display module 200a can be disposed between the touch sensor 100a and the cover plate 220 . For example, the polarizing layer 230 can be directly formed on the surface of the cover plate 220 , that is, the polarizing layer 230 is formed by using the cover plate 220 as a base material.

According to the above-mentioned embodiments of the present disclosure, since the touch sensor of the present disclosure has a corresponding hole area located in the visible area, when the above-mentioned touch sensor is integrated into a touch display module with optical functions, the touch The optical components of the display module can be arranged corresponding to the hole area. In this way, the space for disposing optical components in the peripheral area can be saved, thereby satisfying the requirement of narrow frame design of the touch display module. In addition, since the optical components of the touch display module are correspondingly arranged in the visible area, the peripheral lines of the touch sensor located in the peripheral area do not need to be arranged avoiding the optical components, and the bending of the peripheral area is not affected by the optical components. Limitations, so that the touch sensor can achieve more diverse bending design. On the other hand, by adjusting the resistance specification of the touch electrode layer and the layout of the touch electrodes and the design of the electrode pattern, the touch electrodes can still maintain the line required for the design while bypassing the hole area. Resistance value, in order to maintain good touch function. In addition, in the manufacturing process of the touch sensor disclosed in the present disclosure, the order of the manufacturing steps can be flexibly adjusted according to actual needs, thereby improving the convenience of the manufacturing process.

Although this disclosure has been disclosed as above in the form of implementation, it is not intended to limit this disclosure. Anyone who is familiar with this technology can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, the protection of this disclosure The scope shall be defined by the appended patent application scope.

100,100a: touch sensor 110: Substrate 120: The first touch sensing layer 122: The second touch sensing layer 130: Peripheral circuit layer 200,200a: touch display module 210: display panel 220: cover plate 230: Polarizing layer 240: protective layer VA: Visual Area PA: Peripheral Area R1, R2: area L: electrode wire L1: the first electrode line L2: Second electrode line L3: The third electrode line L4: The fourth electrode line L5: fifth electrode line L6: The sixth electrode line L11, L21, L31, L51, L61: first part L12, L22, L32, L52, L62: Part II L13, L23, L53: Part III H: Hole area W: width S1: first edge S2: second edge S3: Third Edge B: bend X1, X2: line length A1~A4,A7~A9: distance O1~O3: holes D1: the first direction D2: Second direction

In order to make the above and other purposes, features, advantages and embodiments of the present disclosure more comprehensible, the accompanying drawings are described as follows: FIG. 1 shows a schematic top view of a touch sensor according to some embodiments of the present disclosure; FIG. 2A shows a partially enlarged schematic diagram of the region R1 of the touch sensor in FIG. 1 according to some embodiments of the present disclosure; FIG. 2B and FIG. 2C are partial enlarged schematic diagrams of the region R1 of the touch sensor in FIG. 1 according to other embodiments of the present disclosure; FIG. 3 shows a schematic top view of a touch sensor according to other embodiments of the present disclosure; FIG. 4 shows a partially enlarged schematic diagram of the region R2 of the touch sensor in FIG. 3 according to some embodiments of the present disclosure; FIG. 5A shows a schematic cross-sectional view of a touch display module according to some embodiments of the present disclosure; and FIG. 5B is a schematic cross-sectional view of a touch display module according to other embodiments of the present disclosure.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

R1: Region 120: the first touch electrode layer L: electrode wire L1: the first electrode line L2: Second electrode line L3: The third electrode line L4: The fourth electrode line L11, L21, L31: Part I L12, L22, L32: Part II L13, L23: Part III H: Hole area W: width S1: first edge S2: second edge S3: Third Edge X1, X2: line length A1~A4: Distance D1: the first direction D2: Second direction

Claims (19)

A touch sensor has a visible area and a peripheral area arranged on at least one side of the visible area. The touch sensor includes: a substrate provided with a hole area corresponding to the visible area, wherein the hole The bit area has a first edge; and a first touch electrode layer is arranged on the substrate and correspondingly located in the visible area, wherein the first touch electrode layer includes a first electrode line extending along a first direction , and the first electrode line has a first part close to the hole area and two second parts away from the hole area in the first direction, wherein the first part of the first electrode line is connected to the first electrode The second part of the line, the first part of the first electrode line is adjacent to the first edge along the contour of the hole area, and the first part of the first electrode line is away from the first part of the hole area The distance between one edge is between 100 microns and 400 microns. The touch sensor according to claim 1, wherein the first touch electrode layer includes a matrix and a plurality of metal nanostructures distributed in the matrix. The touch sensor according to claim 1, wherein the hole area further has a second edge, and part of the second edge and part of the first edge are located on opposite sides of the hole area. The touch sensor according to claim 3, wherein the first touch electrode layer further includes a second electrode line extending along the first direction, Adjacent to the first electrode line and arranged at intervals, and has a first part close to the hole area and a second part far away from the hole area in the first direction, wherein the first part of the second electrode line A part is connected to the second part of the second electrode line, and the first part of the second electrode line is adjacent to the second edge along the outline of the hole area. The touch sensor as described in claim 4, wherein the distance between the first portion of the first electrode line and the first portion of the second electrode line is greater than at least the distance between the two second portions of the first electrode line a distance between one and the second portion of the second electrode line. The touch sensor as claimed in claim 4, wherein at least a part of the first part of the first electrode line is separated from at least a part of the first part of the second electrode line by the hole area. The touch sensor as claimed in claim 4, wherein the two second portions of the first electrode line are substantially parallel to the second portion of the second electrode line. The touch sensor as claimed in claim 4, wherein the distance between the first portion of the second electrode line and the second edge of the hole area is between 100 μm and 400 μm. The touch sensor as described in claim 4, wherein the first A joint between the first portion of an electrode line and at least one of the two second portions of the first electrode line has a rounded corner, and the first portion of the second electrode line and the first portion of the second electrode line A joint of the two parts has a rounded corner. The touch sensor according to claim 1, wherein the first electrode line includes a plurality of branch lines arranged at intervals, and the branch lines are connected in parallel. The touch sensor as described in claim 10, wherein when the branch lines encounter the interference of the hole area in the first direction at the same time, the branch lines are merged into one and adjacent along the outline of the hole area Set on the first edge of the hole area. The touch sensor as claimed in item 11, wherein the first electrode line of the first touch electrode layer further has a third part, and the two second parts of the first electrode line and the third part constitute The two branch lines of the first electrode line, and the third part are connected to the first part of the first electrode line, so that the first part of the first electrode line is a part forming a combination of the branch lines. The touch sensor as described in claim 1, wherein the touch sensor further includes a second touch electrode layer, and the substrate has a first surface and a second surface opposite, wherein the first touch electrode layer and the The second touch electrode layer is respectively arranged on the first surface and the second surface of the substrate; or, the first touch electrode layer and the second touch electrode layer are both arranged on the first surface or the second surface of the substrate The side of the second surface is electrically insulated through an insulating layer. The touch sensor according to claim 13, wherein the second touch electrode layer includes a fifth electrode line extending along a second direction, the second direction is perpendicular to the first direction, and the fifth electrode The line has a first portion close to the aperture area and a second portion away from the aperture area in the second direction, wherein the first portion of the fifth electrode line is connected to the second portion of the fifth electrode line , and the first part of the fifth electrode line is adjacent to the edge of the hole area along the outline of the hole area. A touch display module, comprising: a display panel; and a touch sensor as described in claim 1, disposed on the display panel. The touch display module as described in claim 15 further includes a cover disposed on the touch sensor. The touch display module as claimed in claim 16 further includes a polarizing layer disposed between the display panel and the touch sensor, or between the touch sensor and the cover. The touch display module as claimed in claim 15, wherein the display panel is provided with a hole corresponding to the hole area. The touch display module as claimed in claim 18 further includes an optical component accommodated in the hole.

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