KR20220110026A - Touch sensor and touch display module - Google Patents

Abstract

A touch sensor having a visible area and a peripheral area on at least one side surface of the visible area comprises a substrate and a first touch electrode layer. The substrate has a hole area corresponding to the visible area, and the hole area has a first edge. The first touch electrode layer is disposed on the substrate to correspond to the visible area. The first touch electrode layer comprises a first electrode line extending along a first direction, and the first electrode line has a first part close to the hole area and a second part far from the hole area along the first direction. The first part of the first electrode line is connected to the second part of the first electrode line, and the first part of the first electrode line is disposed adjacent to 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, touch display functions have been integrated into various electronic devices (eg, mobile phones, tablet computers, etc.). A display surface of the electronic device includes a visible region and a peripheral region, wherein the peripheral region is generally disposed around the visible region and the extent of the peripheral region is such that the shielding layer encloses some peripheral wiring and components corresponding to the peripheral region of the electronic device. To shield, it is defined by the location of the shielding layer.

For example, peripheral wiring of a touch panel of an electronic device is arranged corresponding to the peripheral area in order to prevent it from becoming visible and affecting a visual effect. Additionally, electronic devices generally include optical components, such as front lenses, optical sensors, etc., which are also disposed in the peripheral area and occupy much more space of the peripheral area. Therefore, the size of the peripheral area is not likely to be reduced, and thus the electronic device cannot meet the design requirement of a narrow bezel. Moreover, since the arrangement of the optical component will cause the problem of mechanism interference, the circuit layout of the touch panel will be affected. Accordingly, how to provide a touch panel capable of maintaining a touch sensing function while meeting the requirement of a narrow bezel for an electronic device is one of the current development directions.

According to some embodiments of the present disclosure, a touch sensor having a visible area and a peripheral area on at least one side of the visible area includes a substrate and a first touch electrode layer. The substrate has a hole region corresponding to the visible region, and the hole region has a first edge. The first touch electrode layer is disposed on the substrate to correspond to the visible region. The first touch electrode layer includes a first electrode line extending along a first direction, the first electrode line having a first portion close to the hole region and a second portion remote from the hole region along the first direction. A first portion of the first electrode line is connected to a second portion of the first electrode line, and the first portion of the first electrode line is disposed adjacent to the first edge along the contour of the hole region.

In some embodiments of the present disclosure, the first touch electrode layer includes a matrix and a plurality of metal nanostructures distributed within the matrix.

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

In some embodiments of the present disclosure, the first touch electrode layer further includes a second electrode line extending along the first direction, and the second electrode line is disposed adjacent to the first electrode line and spaced apart from the first electrode line and the second electrode line has a first portion close to the hole region and a second portion far away from the hole region along the first direction, the first portion of the second electrode line being connected to the second portion of the second electrode line and a first portion of the second electrode line is disposed adjacent to the second edge along the contour of the hole region.

In some embodiments of the present disclosure, 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 of the present disclosure, at least a portion of the first portion of the first electrode line is spaced apart from at least a portion of the first portion of the second electrode line by a hole region.

In some embodiments of the present disclosure, the second portion of the first electrode line and the second portion of the second electrode line are substantially parallel.

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

In some embodiments of the present disclosure, the connecting portion of the first portion of the first electrode line and the second portion of the first electrode line has a rounded corner, and the first portion of the second electrode line and the second portion of the second electrode line of the joint has rounded corners.

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

In some embodiments of the present disclosure, when the branch lines meet the hole area along the first direction at the same time, the branch lines are joined together to be adjacent to the first edge of the hole area along the contour of the hole area.

In some embodiments of the present disclosure, the first electrode line of the first touch electrode layer further has a third portion, and the second portion of the first electrode line and the third portion of the first electrode line are of the first electrode line. A third portion is connected to the first portion of the first electrode line, constituting two of the branch lines, such that the first portion of the first electrode line constitutes a portion to which the branch lines are coupled together.

In some embodiments of the present disclosure, the touch sensor further comprises a second touch electrode layer, the substrate having a first surface and a second surface facing away from the first surface, the first touch electrode layer and the second the touch electrode layer is disposed on the first surface and the second surface of the substrate, respectively; Alternatively, the first touch electrode layer and the second touch electrode layer are disposed on a side surface of the first surface or the second surface of the substrate, and are electrically insulated by the insulating layer.

In some embodiments of the present disclosure, the second touch electrode layer includes a fifth electrode line extending along a second direction, the second direction being perpendicular to the first direction, and the fifth electrode line extending along the second direction having a first portion close to the hole region and a second portion remote from the hole region, wherein the first portion of the fifth electrode line is connected to the second portion of the fifth electrode line, and the first portion of the fifth electrode line is the hole disposed adjacent to the edge of the hole area along the contour of the area.

According to the above-described embodiment of the present disclosure, the touch display module includes a display panel and the above-described touch sensor on the display panel.

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

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

In some embodiments of the present disclosure, the display panel has a hole corresponding to the hole area.

In some embodiments of the present disclosure, the touch display module further includes an optical component accommodated in the hall.

According to the above-described embodiment of the present disclosure, since the touch sensor of the present disclosure has a hall area disposed corresponding to the visible area, when the touch sensor is integrated into a touch display module having an optical function, the optical component of the touch display module (For example, a lens) may be disposed to correspond to the hole area. As a result, the space in the peripheral area for arranging the optical component can be saved, and the design requirement of a narrow bezel for the touch display module is further achieved. Additionally, since the optical component of the touch display module is disposed to correspond to the hall region, arranging the peripheral wiring in the peripheral region of the touch sensor does not need to avoid the position of the optical component, and the curvature of the peripheral region is limited by the optical component doesn't happen Thus, the touch sensor can achieve various curvature designs. On the other hand, through the arrangement of the touch electrodes and the design of the electrode pattern in the touch electrode layer, the touch electrode can maintain a good touch function while bypassing the hole area.

BRIEF DESCRIPTION OF THE DRAWINGS The present disclosure may be more fully understood by reading the following detailed description of embodiments, with reference to the accompanying drawings as follows.
1 is a plan view illustrating a touch sensor in accordance with some embodiments of the present disclosure;
2A is a partially enlarged view illustrating a region R1 of the touch sensor in FIG. 1 according to some embodiments of the present disclosure;
2B and 2C are partially enlarged views illustrating a region R1 of the touch sensor in FIG. 1 according to some other embodiments of the present disclosure;
3 is a plan view illustrating a touch sensor according to some other embodiments of the present disclosure;
4 is a partially enlarged view illustrating a region R2 of the touch sensor in FIG. 3 in accordance with some embodiments of the present disclosure;
5A is a cross-sectional view illustrating a touch display module according to some embodiments of the present disclosure;
5B is a cross-sectional view illustrating a touch display module according to some other embodiments of the present disclosure.

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and description to refer to the same or like parts.

Although the terms “first,” “second,” and “third” may be used herein to describe various elements, components, regions, layers and/or portions, such elements, components, regions, layers, and/or or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or portion from another element, component, region, layer or portion. Thus, without departing from the teachings herein, a “first element”, “first component”, “first region”, “first layer” or “first portion” described below means a second element, It may also be referred to as a second component, a second region, a second layer, or a second portion.

Additionally, as shown in the figures, “lower” or “bottom” and “upper” or “top” to describe the relationship between one element and another. Relative terms such as may be used herein. It should be understood that the relative terms are intended to encompass different orientations of devices other than those shown in the figures. For example, if the device in one figure is turned over, elements described as being on the "lower" side of the other element will be oriented on the "upper" side of the other element. Accordingly, the exemplary term “lower” may include orientations of “lower” and “top”, depending on the particular orientation of the figure. Similarly, if the device in one figure is turned over, elements described as "below" the other element will be oriented "above" the other element. Thus, the exemplary term “below” may include orientations of “above” and “below”.

The present disclosure provides a touch sensor having a hall area disposed to correspond to a visible area, and a touch display module integrated with the touch sensor. When the touch sensor is integrated into the touch display module, the optical component of the touch display module may be disposed to correspond to the hall area. Accordingly, the space in the peripheral area for arranging the optical component can be saved so that the design requirement of the narrow bezel for the touch display module is further achieved. Additionally, through the arrangement of the touch electrodes and the design of the electrode pattern in the touch electrode layer, the touch electrode can bypass the hole area while maintaining a good touch function.

1 is a plan view illustrating 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 surface of the visible area VA. For example, the peripheral area PA may be a frame-shaped area disposed around the visible area VA (ie, including right, left, upper, and lower sides). As another example, the peripheral area PA may be an L-shaped area disposed on left and lower side surfaces of the visible area VA. In some embodiments, the substrate 110 is configured to support 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 is glass, acrylic, polyvinyl chloride, cycloolefin polymer, cycloolefin copolymer, polypropylene, polystyrene, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, colorless polyimide, or a combination thereof. transparent materials such as, but not limited to.

In some embodiments, a hole area H is provided in the substrate 110 to correspond to the visible area VA. When the touch sensor 100 of the present disclosure is integrated into a device having an optical function (eg, a display, a mobile phone, or a tablet computer), the optical component of the device may be installed at a position corresponding to the hall area H. have. That is, there is no need to secure a space corresponding to the peripheral area PA of the device for installing the optical component, thereby satisfying the design requirement of a narrow bezel for the device. Compared to a conventional device in which the optical component is disposed to correspond to the peripheral area PA, the bezel size of the device of the present disclosure can be reduced by about 150% or more (eg, the width of the peripheral area PA is may be reduced). In detail, when the touch sensor 100 of the present disclosure is integrated into a device having an optical function, the width of the peripheral area PA of the device may be designed to be about 1 mm to 3 mm. It should be understood that the hole area H of the substrate 110 of the present disclosure may be a solid area corresponding to an optical component, or may be a through hole corresponding to an optical component. Specific details and characteristics of the hole region H will be described in more detail in the description below.

In some embodiments, the first touch electrode layer 120 is disposed to correspond to the visible area VA on the substrate 110 , and the peripheral circuit layer 130 is disposed in the peripheral area PA on the substrate 110 . placed correspondingly. In some embodiments, the first touch electrode layer 120 may include a plurality of strip-shaped electrode lines L extending along the first direction D1 after being patterned, and the strip-shaped electrode lines L ) may be arranged at regular intervals along the second direction D2 , wherein the first direction D1 is perpendicular to the second direction D2 . Additionally, the first touch electrode layer 120 may further extend into the peripheral area PA and contact the peripheral circuit layer 130 to form an electrical connection.

In some embodiments, the first touch electrode layer 120 may include a matrix and a plurality of metal nanowires (also referred to as metal nanostructures) distributed within the matrix. The matrix may include polymers or mixtures thereof to impart 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 also provide good mechanical strength for the metal nanowires. In some embodiments, the matrix may include certain polymers such that the metal nanowires have an additional scratch-resistant/abrasion-resistant surface protection, thereby improving the surface strength of the first touch electrode layer 120 . The specific polymers described above may be, for example, polyacrylates, epoxy resins, polyurethanes, polysiloxanes, polysilanes, poly(silicone-acrylic acid), or combinations thereof. In some embodiments, in order to improve the UV resistance of the first touch electrode layer 120 to extend its service life, the matrix includes, but is not limited to, surfactants, crosslinking agents, stabilizers (eg, antioxidants or UV stabilizers). not included), a polymerization inhibitor, or a combination of any of the foregoing.

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

FIG. 2A is a partially enlarged view illustrating a region R1 of the touch sensor 100 in FIG. 1 according to some embodiments of the present disclosure. See Figures 1 and 2a. In some embodiments, the electrode line L may extend from an upper boundary of the visible area VA to a lower boundary of the visible area VA in the first direction D1 and in the second direction D2. They are arranged at regular intervals to correspond to the visible area VA. In some embodiments, to provide lower line resistance and higher light transmittance, the line width of each electrode line L may be between 1 μm and 200 μm, and the distance between adjacent electrode lines L (i.e., , line pitch) may be 10 μm to 400 μm. As mentioned above, since the substrate 110 of the touch sensor 100 has the hole area H corresponding to the visible area VA, the electrode line L adjacent to the hole area H is a hole. It may be configured to have good compatibility with the region H. More specifically, the electrode line L adjacent to the hole region H may be particularly configured to prevent blocking the hole region H, and also particularly configured to maintain the line resistance required by the design. can be The specific configuration of each electrode line L and the correlation between such configuration and the aforementioned effects will be described in more detail in the following description.

In some embodiments, as in the configuration of FIG. 2A , the first touch electrode layer 120 includes the first electrode line L1 adjacent to the hole region H. In some embodiments, the first electrode line L1 includes a first portion L11 closer to the hole region H and a second portion L12 further away from the hole region H along the first direction D1. ), and the first part L11 is connected to the second part L12. In more detail, the first portion L11 of the first electrode line L1 is immediately adjacent to the first edge S1 of the hole region H and follows the contour of the hole region H. ), while the second portion L12 of the first electrode line L1 is not directly adjacent to the first edge S1 of the hole region H and is substantially straight to be. It should be noted that the hereinafter used "two elements (or two parts) immediately adjacent to each other" refers to no other element (or other part) 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 along the first direction D1, and the two The second portions L12 are substantially aligned with each other in the first direction D1 .

In some embodiments, the first electrode line L1 includes a plurality of branch lines disposed at regular intervals, and the 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 are connected to the first electrode line L1 . ) constitutes two of the branch lines. That is, the second portion L12 and the third portion L13 of the first electrode line L1 are disposed parallel to each other, spaced apart from each other, and connected in parallel (ie, the second portion L12 of the first electrode line L1 ). The second part L12 and the third part L13) are connected to the same peripheral line). Meanwhile, when the branch lines meet the hole region H along the first direction D1 at the same time, the branch lines are adjacent to the first edge S1 of the hole region H along the contour of the hole region H. are joined together Specifically, when the second portion L12 and the third portion L13 of the first electrode line L1 meet the hole region H at the same time, the second portion L12 of the first electrode line L1 and The third portion L13 may be coupled together to the first portion L11 of the first electrode line L1 so that the third portion L13 is adjacent to the first edge S1 of the hole area H along the contour of the hole area H. Thus, the third portion L13 of the first electrode line L1 is connected to the first portion L11 of the first electrode line L1. In other words, the first portion L11 of the first electrode line L1 constitutes a portion in which the branch lines are coupled together. In some embodiments, the first electrode line L1 may have two third portions L13 respectively connected to two ends of the first portion L11 along the first direction D1, and the two The third portions L13 are substantially aligned with each other in the first direction D1 .

In some embodiments, the first touch electrode layer 120 further includes a second electrode line L2 adjacent to the hole region H. The second electrode line L2 also has a first portion L21 closer to the hole region H and a second portion L22 further away from the hole region H along the first direction D1, The first part L21 is connected to the second part L22. In some embodiments, the hole region H further has a second edge S2, and a portion of the second edge S2 and a portion of the first edge S1 are opposite sides of the hole region H. where the first portion L21 of the second electrode line L2 is immediately adjacent to the second edge S2 of the hole region H and follows the contour of the hole region H ), while the second portion L22 of the second electrode line L2 is not directly adjacent to the second edge S2 of the hole region H and is substantially straight to be. In other words, at least a portion of the first portion L11 of the first electrode line L1 is spaced apart from at least a portion of the first portion L21 of the second electrode line L2 by the hole region 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, the second electrode line L2). ) and the second portion L12 of the first electrode line L1 are parallel to each other along the first direction D1). Based on the above, the second electrode line L2 and the first electrode line L1 are formed in the hole region H and the hole region H in order to prevent blocking the optical component disposed corresponding to the hole region H. ) can be bypassed.

In some embodiments, the second electrode line L2 includes a plurality of branch lines disposed at regular intervals, and the branch lines are connected in parallel. Specifically, the second electrode line L2 further has a third portion L23, and the first portion L21 is connected to the second portion L22 of the second electrode line L2 to form a second electrode line. One of the branch lines of L2 is constituted, and the third part L23 constitutes the other one of the branch lines of the second electrode line L2, where the two branch lines are arranged at regular intervals. Since the two branch lines of the second electrode line L2 do not meet simultaneously with the hole region H while extending along the first direction D1, the two branch lines of the second electrode line L2 become one together. It should be noted that they do not need to be combined.

In some embodiments, the maximum width W of the hole region H along the second direction D2 is the second portion L12 of the first electrode line L1 and the second portion of the second electrode line L2. greater than the distance A2 between the portions L22. Accordingly, when the first electrode line L1 and the second electrode line L2 bypass the hole region H, the first portion L11 and the second electrode line L2 of the first electrode line L1 The distance A1 between the first part L21 of Big. In the embodiment of FIG. 2A , since the hole region H has a circular shape, the maximum width W of the hole region H refers to the diameter of the circular shape.

In some embodiments, the third edge S3 is between the first edge S1 and the second edge S2 of the hole region H, the first edge S1, the second edge S2 and the second edge S2 The three edges S3 may be connected to each other to form a closed hole region H together. In some embodiments, the third edge S3 of the hole region H may be exposed by a space between the first electrode line L1 and the second electrode line L2 . In more detail, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are formed along the contour of the hole region H. It is not adjacent to the third edge S3. In other words, the first electrode line L1 and the second electrode line L2 are adjacent to only a portion of the edge of the hole region H along the contour of the hole region H. 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, In this case, the length of the first edge S1 is greater than the length of the second edge S2 (as in the embodiment of FIG. 2A ).

In some embodiments, the connection portion between the first portion L11 and the second portion L12 of the first electrode line L1 may have a rounded corner, and the first portion L21 of the second electrode line L2 ) and the connection portion between the second portion L22 may also have a rounded corner. The rounded corner design prevents the first electrode line (L1) and the second electrode line (L2) from excessively dissipating heat due to current accumulation at the connection (ie, the location near the hole area (H)), Thereby, it is possible to reduce the occurrence of thermal effects and maintain a normal touch sensing function. In some embodiments, the distance A3 between the first portion L11 of the first electrode line L1 and the first edge S1 of the hole region H is 100 μm to 400 μm, and the second electrode line A distance A4 between the first portion L21 of the L2 and the second edge S2 of the hole region H is 100 μm to 400 μm. The distance makes it possible to provide touch resolution, reliability, and production yield to the touch sensor 100 . Specifically, when the distance is less than 100 μm, the production yield is reduced due to the difficulty of patterning the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2. reduced; When the distance is more than 400 μm, the arrangement of the electrode lines L near the hole region H may be too sparse to provide a touch function, which may result in a decrease in touch resolution.

In some embodiments, the first touch electrode layer 120 is formed on the side of the first electrode line L1 facing away from the second electrode line L2 , and the first touch electrode layer 120 is directly adjacent to the first electrode line L1 . A three-electrode line L3 may be further included. 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 connected to the first electrode line L1. It is adjacent to the first part L11 , and the second part L32 of the third electrode line L3 is adjacent to the third part L13 of the first electrode line L1 . In some embodiments, the first portion L31 of the third electrode line L3 extends substantially along the first portion L11 of the first electrode line L1, and the first portion L31 of the third electrode line L3 The second portion L32 may be substantially parallel to the third portion L13 of the first electrode line L1 . Compared to the first electrode line L1 , the third electrode line L3 is farther from the hole region H and will not meet the hole region H when it extends along the first direction D1 . Accordingly, the third electrode line L3 is designed to extend on the premise that a distance required for touch sensing is maintained from the first electrode line L1 . The degree of bending of the first portion L31 of the third electrode line L3 is smaller than the degree of bending of the first portion L11 of the first electrode line L1 (that is, the degree of bending of the first portion L31 of the third electrode line L3). The shape of the portion L31 is closer to a straight line). On the other hand, in order to prevent the third electrode line L3 from excessively dissipating heat due to current accumulation in the connection portion, thereby reducing the occurrence of a thermal effect, the first portion ( The connection portion between the L31 and the second portion L32 may have a rounded corner.

In some embodiments, the first touch electrode layer 120 is a second electrode line (L2) directly adjacent to the side of the second electrode line (L2) facing away from the first electrode line (L1). It further includes a 4 electrode line (L4). When the fourth electrode line L4 extends along the first direction D1, it does not meet the hole region H and the fourth electrode line L4 is also connected to the second electrode line L2 (the second electrode line L2). ) to maintain a distance required for touch sensing from the third portion L23), the fourth electrode line L4 may be a straight line extending in the first direction D1.

In addition to the electrode line L adjacent to the hole region H (that is, the first electrode line L1 to the fourth electrode line L4), the first touch electrode layer further away from the hole region H ( The other electrode line L in 120 is the side of the third electrode line L3 facing away from the hole region H and the fourth electrode line L4 facing away from the hole region H. It may be arranged at regular intervals along the second direction D2 on the side of the , and it should be understood that the shape of each electrode line L is substantially a straight line.

Since the first electrode line L1 in this embodiment adopts a design in which two branch lines are coupled into one, the line resistance of the first electrode line L1 is different from that of the other electrode line ( For example, it is compensated for being higher than the line resistance of the second electrode line L2). However, in order to keep the line resistance of each electrode line L of the first touch electrode layer 120 near the lower limit of the sensing range of the controller, the first touch electrode layer 120 has a lower surface resistance specification. A conductive layer, which is a layer of metal nanowires, may be employed. Accordingly, even if the first electrode line L1 has a higher line resistance due to the design in which the two branch lines are combined into one, such line resistance can still be maintained within a range that can be sensed by the controller.

2B and 2C are partially enlarged views illustrating a region R1 of the touch sensor 100 in FIG. 1 according to some other embodiments of the present disclosure. The touch sensor 100 of FIGS. 2B and 2C and the touch sensor 100 of FIG. 2A have substantially the same component configuration, connection relationships, materials, and advantages, which will not be repeated hereafter and only differences will be described below. It should be understood that this will be discussed in Additionally, to simplify the drawing, some of the electrode lines L are omitted from FIGS. 2B and 2C , and a portion of the first electrode line L1 closest to the hole region H and the second electrode line are omitted. Only a portion of (L2) is shown.

See Figure 2b. At least one difference between the touch sensor 100 shown in FIG. 2B and the touch sensor 100 shown in FIG. 2A is in the shape of the hall area H. Specifically, the hall region H in the touch sensor 100 of FIG. 2B has a rectangular (square) shape. In this embodiment, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are formed along the contour of the hole region H, respectively. The first edge S1 and the second edge S2 are disposed adjacent to each other to form a rectangular shape. Since the hole region H has a rectangular shape in this embodiment, each of the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 has at least two curved lines. It has a part (B). In some embodiments, the bent portion B prevents the first electrode line L1 and the second electrode line L2 from excessively dissipating heat due to current accumulation in the bent portion B, thereby It can have rounded corners to reduce the occurrence of thermal effects and maintain normal touch-sensing functionality.

See Figure 2c. At least one difference between the touch sensor 100 illustrated in FIG. 2C and the touch sensor 100 illustrated in FIG. 2A is also in the shape of the hall area H. Specifically, the hall region H in the touch sensor 100 of FIG. 2C has a pill shape. More specifically, the pill shape includes one rectangle and two semicircles, with the rectangle sandwiched between the two semicircles. In this embodiment, the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are formed along the contour of the hole region H, respectively. It is disposed adjacent to the first edge (S1) and the second edge (S2) of forming a pill-shaped shape. Since the hole region H has a pill-shaped shape in this embodiment, the shape of the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 are The shapes are each a smooth curve (ie no edge angle). Accordingly, it is possible to prevent the first electrode line L1 and the second electrode line L2 from excessively dissipating heat due to current accumulation, thereby reducing the occurrence of a thermal effect and maintaining a normal touch sensing function. .

It should be understood that the shape of the hole region H shown in FIGS. 2A to 2C is only an exemplary embodiment, and the present disclosure is not limited thereto. In some other embodiments, the hole regions H may also have other suitable shapes (eg, ellipses, polygons, etc.), and each electrode line L may also be configured to match the shape of the hole regions H. can be appropriately configured. In the following description, a touch sensor according to another embodiment of the present disclosure will be described.

3 is a plan view illustrating a touch sensor 100a according to some other embodiments of the present disclosure. 4 is a partially enlarged view illustrating a region R2 of the touch sensor 100a in FIG. 3 according to some embodiments of the present disclosure. See Figures 3 and 4. 3 and 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 electrodes. configured to form a structure. More specifically, the first touch electrode layer 120 is formed on the first surface (eg, upper surface), and the second touch electrode layer 122 is disposed on the second surface (eg, lower surface) of the substrate 110 . In some embodiments, the second touch electrode layer 122 also has an electrode pattern arranged in a plurality of electrode lines L, and the aforementioned metal nanowires and matrix are each electrode of the second touch electrode layer 122 . It is on line (L). In some embodiments, each electrode line L of the second touch electrode layer 122 may extend from a left boundary of the visible area VA to a right boundary of the visible area VA along the second direction D2. and may be arranged at regular intervals to correspond to the visible area VA along the first direction D1. In other words, the electrode line L of the first touch electrode layer 120 and the electrode line L of the second touch electrode layer 122 extend in different directions and are perpendicular to each other. Accordingly, a touch sensing function may be performed by detecting a signal change (eg, a change in capacitance) between the first touch electrode layer 120 and the second touch electrode layer 122 .

In some embodiments, the second touch electrode layer 122 includes a fifth electrode line L5 and a sixth electrode line L6 adjacent to opposite sides of the hole region H, and the fifth electrode line ( L5 and the sixth electrode line L6 have a first portion L51 and L61 closer to the hole region H and a second portion L52 farther from the hole region H along the second direction D2. , L62). 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. do. Since the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 extend in the second direction D2, the fifth electrode line L5 and the sixth electrode line (L5) The first portions L51 and L61 of the L6 are along the contour of the hole area H, the third edge S3 of the hole area H, and a portion of the first edge S1 and the second edge S2. placed adjacent to The difference between the second touch electrode layer 122 and the first touch electrode layer 120 is only in their extension direction and arrangement direction, and the components of the second touch electrode layer 122 and the first touch electrode layer 120 are It should be understood that the construction and connection relationships, materials, and advantages are substantially the same, which will not be repeated hereinafter. For example, the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 are respectively the first electrode line L1 and the second electrode of the first touch electrode layer 120 . It has the same component construction, materials and advantages as line L2.

Meanwhile, in order to meet the requirement of capacitance sensing, the first touch electrode layer 120 and the second touch electrode layer 122 are partially staggered along a direction perpendicular to the extending direction of the substrate 110 . ) (i.e. not completely overlapping). The first electrode line L1 and the second electrode line L2 of the first touch electrode layer 120 as well as the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 In terms of , second portions L12 and L22 of the first electrode line L1 and the second electrode line L2 are , L61 partially overlaps, while the first portions L11 and L21 of the first electrode line L1 and the second electrode line L2 are the fifth electrode line L5 and the sixth electrode line L6. completely offset from the first portion L51, L61 of In some embodiments, the distance A8 between the first portions L51 and L61 of the fifth electrode line L5 and the sixth electrode line L6 and the edge of the hole region H is the first electrode line L1 ) and the distance between the first portions L11 and L21 of the second electrode line L2 and the edge of the hole region H may be greater than the distance A7 .

Although not shown in the drawings, the touch sensor 100a having a double-sided single-layer electrode structure in FIG. 3 may also have a hole region H having a rectangular shape or a pill shape shown in FIGS. 2B and 2C . is worth noting. Meanwhile, the touch sensor 100a of the present disclosure may also have a single-sided 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 by the insulating layer. . It should be understood that the component connection relationships, materials and advantages described above will not be repeated hereinafter. In the following description, the touch sensor 100 in FIGS. 1 and 2A will be taken as an example to further discuss the manufacturing method of the touch sensor 100 .

In some embodiments, the method of manufacturing the touch sensor 100 may include steps S10 to S14, and steps S10 to S14 may be sequentially performed. In step S10 , a substrate 110 is provided, wherein the substrate 110 has a first area and a second area corresponding to the visible area VA and the peripheral area PA, respectively, and A hole area H is provided in the first area. In step S12 , a conductive layer is formed on the first region of the substrate 110 . In step S14 , the first touch electrode layer 120 has a first electrode line L1 and a second electrode line L2 , and a portion of the first electrode line L1 and the second electrode line L2 ), the conductive layer is patterned to form the first touch electrode layer 120 such that a portion of the hole region H is disposed adjacent to the edge of the hole region H along the contour of the hole region H. In the following description, the foregoing steps will be described in more detail.

First, in step S10 , a substrate 110 is provided, wherein the substrate 110 has a first area and a second area corresponding to a visible area VA and a peripheral area PA, respectively, and the substrate 110 A hole region H is provided in the first region of ). In some embodiments, the distance A9 between the boundary between the first region and the second region and the edge of the hole region H is greater than or equal to 100 μm. Accordingly, the hole region H and the boundary may be separated by a specific distance to provide a space for arranging at least one electrode line L sufficient for touch sensing to maintain touch resolution. Specifically, when the distance A9 is less than 100 μm, the conductive layer positioned between the hole region H and the boundary is insufficient or difficult to pattern, thereby affecting the integrity of the electrode pattern near the hole region H. and may reduce touch resolution.

Next, in step S12 , a conductive layer comprising at least metal nanowires (eg, a layer of silver nanowire material, a layer of gold nanowire material, or a layer of copper nanowire material) is applied to a first region of the substrate 110 . formed on the In some embodiments, a dispersion or slurry having metal nanowires can be formed on the substrate 110 by coating, which is then cured or cured to cause the metal nanowires to adhere to the surface of the substrate 110 . is dried After the curing or drying step, the solvent and other substances in the dispersion or slurry will be volatilized, and the metal nanowires may be randomly distributed on the surface of the substrate 110 , or preferably the metal nanowires are the conductive layer It can be fixed on the surface of the substrate 110 without falling to form a. The metal nanowires in the conductive layer may contact each other to provide a continuous current path to form a conductive network. That is, the metal nanowires contact each other at their crossing positions to form a path for electron transfer.

In some embodiments, the dispersion or slurry includes a solvent such that the metal nanowires are uniformly dispersed in the solvent. Specifically, the solvent is, for example, water, alcohol, ketone, ether, hydrocarbon, aromatic solvent (benzene, toluene, xylene, etc.) or a combination thereof. In some embodiments, the dispersion may further include additives, surfactants and/or binders 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 are, for example, carboxymethyl cellulose, hydroxyethyl cellulose, hypromellose, fluorosurfactants, sulfosuccinate sulfonates, sulfates, phosphates, disulfonates or a combination thereof. The dispersion or slurry comprising metal nanowires may be formed on the surface of the substrate 110 in any manner, such as, but not limited to, a process such as screen printing, spray coating, or roller coating. In some embodiments, a roll-to-roll process may be performed so that a dispersion or slurry including metal nanowires is coated on the surface of the continuously supplied substrate 110 .

In some embodiments, post-treatment may be further performed to improve the contact properties (eg, increase the contact area) of the metal nanowires at the crossover locations of the metal nanowires to improve the conductivity. Post-treatment may include steps such as, but not limited to, heating, providing plasma, corona discharge, providing ultraviolet light, providing ozone or pressurizing. Specifically, after the conductive layer is formed by curing or drying, a roller may be used to apply pressure thereto. In some embodiments, one or more rollers may be used to apply pressure to the conductive layer. In some embodiments, the applied pressure may be from about 50 psi to about 3400 psi, preferably from about 100 psi to about 1000 psi, from about 200 psi to about 800 psi, or from about 300 psi to about 500 psi. In some embodiments, the heating step and the pressing step of the post-treatment may be performed simultaneously on the metal nanowires. For example, a pressure of about 10 psi to about 500 psi (or preferably a pressure of about 40 psi to about 100 psi) may be applied through the roller, and the roller may be rotated at about 70° to improve the conductivity of the metal nanowires. C to about 200 °C (or preferably from about 100 °C to about 175 °C) may be heated. In some embodiments, the metal nanowires may be exposed to a reducing agent for post-treatment. For example, metal nanowires comprising silver nanowires may be exposed to a silver reducing agent, preferably for post-treatment. In some embodiments, the silver reducing agent may include a borohydride such as sodium borohydride, a boron nitrogen compound such as dimethylamine borane, or a gas reducing agent such as hydrogen. In some embodiments, the exposure time may be from about 10 seconds to about 30 minutes, preferably from about 1 minute to about 10 minutes.

Subsequently, in step S14 , a patterning step is performed to define a pattern of the conductive layer, thereby forming the first touch electrode layer 120 disposed on the first region of the substrate 110 . In some embodiments, the conductive layer adjacent to the hole region (H) may be patterned with a first electrode line (L1) and a second electrode line (L2) extending on two sides of the hole region (H), A portion of the first electrode line L1 and a portion of the second electrode line L2 are adjacent to edges of the hole region H along the contour of the hole region H. In other words, when the patterning of the conductive layer encounters interference (or blocking) of the hole region H, the patterning of the conductive layer is performed along the contour of the edge of the hole region H. In some embodiments, the conductivity further away from the hole region H to form the above-described third electrode line L3 , the fourth electrode line L4 , and each electrode line L having a substantially linear shape. The layer may be patterned. For a detailed description of each electrode line L, reference may be made to the above description, and this will not be repeated later. In some embodiments, patterning of the conductive layer may be performed by etching. When the metal nanowires in the conductive layer are silver nanowires, to remove the silver material in the same process, the main component of the etching solution is H ₃ PO ₄ (a volume ratio of about 55% to about 70% H ₃ PO ₄ in the etching solution) ) and HNO ₃ (having a volume ratio of about 5% to about 15% HNO ₃ in the etching solution). In some other embodiments, the main component of the etching solution may be ferric chloride/nitric acid or phosphoric acid/hydrogen peroxide.

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

In some alternative embodiments, to fabricate the touch sensor 100 in which the hole region H of the substrate 110 is a through hole, a different process flow may be employed to fabricate the touch sensor 100 of the present disclosure. . Specifically, in this embodiment, the manufacturing method of the touch sensor 100 includes steps ( S20 ) to ( S26 ), and steps ( S20 ) to ( S26 ) may be sequentially performed. In step S20 , a substrate 110 is provided, wherein the substrate 110 has a first area and a second area corresponding to the visible area VA and the peripheral area PA, respectively, and A hole area H is provided in the first area. 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 as a through hole, during which a hole corresponding to the through hole is formed in the conductive layer. In step S26 , the first touch electrode layer 120 has a first electrode line L1 and a second electrode line L2 , and a portion of the first electrode line L1 and the second electrode line L2 ), the conductive layer is patterned to form the first touch electrode layer 120 such that a portion of the portion is disposed adjacent to the edge of the through hole along the contour of the through hole. In the following description, only the adjusted steps will be described, and for the remaining omitted description, reference may be made to the description of the above-described embodiment.

In steps S22 to S24, since a conductive layer is first formed on the first region of the substrate 110, and then a through hole is formed in the substrate 110, the through hole is formed in the through hole while forming the through hole. A hole may be formed in the corresponding conductive layer. In other words, the through hole in the substrate 110 and the hole in the conductive layer are formed in the same process. In some embodiments, the through hole in the substrate 110 and the hole in the conductive layer may be formed by, for example, stamping. Meanwhile, in step S26, when the conductive layer is patterned so that there is a certain distance between the first electrode line L1 and the second electrode line L2 formed by patterning and the through hole in the substrate 110, The size of the hole can be enlarged. After the above steps, the touch sensor 100 of the present disclosure may also be formed. The specific structure is as described above and will not be repeated hereinafter.

In some other alternative embodiments, different process flows may be employed to manufacture the touch sensor 100 of the present disclosure. Specifically, the above-described steps (S22) and (S24) may be reversed. Specifically, in this embodiment, the manufacturing method of the touch sensor 100 includes steps (S30) to (S36), and steps (S30) to (S36) may be sequentially performed. In step S30 , a substrate 110 is provided, wherein the substrate 110 has a first area and a second area corresponding to the visible area VA and the peripheral area PA, respectively, and A hole area H is provided in the first area. In step S32 , the hole region H is formed as a through hole. In step S34 , a conductive layer is formed on the first region of the substrate 110 . In step S36 , the first touch electrode layer 120 has a first electrode line L1 and a second electrode line L2 , and a portion of the first electrode line L1 and the second electrode line L2 ), the conductive layer is patterned to form the first touch electrode layer 120 such that a portion of the portion is disposed adjacent to the edge of the through hole along the contour of the through hole. In the following description, only the adjusted steps will be described, and for the remaining omitted description, reference may be made to the description of the above-described embodiment.

In steps S32 to S34, since a through hole is formed in the substrate 110 in advance, and then a conductive layer is formed on the first region of the substrate 110, an additional hole is to be formed in the conductive layer. no need. Additionally, the conductive layer is formed to selectively avoid the location of the through hole. After the above steps, the touch sensor 100 of the present disclosure may also be formed. Since all of the manufacturing methods of the touch sensor 100 provided in the present disclosure enable the touch sensor 100 to be provided at a constant yield, the process flow can be flexibly adjusted according to actual needs to improve convenience in the manufacturing process. can be adjusted.

5A is a cross-sectional view illustrating a touch display module 200 according to some embodiments of the present disclosure. In some embodiments, the above-described touch sensor (taking the touch sensor 100a of FIG. 3 as an example) may be integrated into the touch display module 200 such as a display, a mobile phone, a tablet computer, or the like. The touch display module 200 may have the aforementioned advantages. In some embodiments, the touch display module 200 includes a display panel 210 and a touch sensor 100a , and the touch sensor 100a 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 embodiments, the display panel 210 may be flexible to realize the bending requirements of the touch display module 200 together with the touch sensor 100a.

In some embodiments, the touch display module 200 further includes a cover 220 . The cover 220 and the display panel 210 have the touch sensor 100a sandwiched therebetween. In the overall stacked structure, the touch sensor 100a and the cover 220 are sequentially stacked on the display panel 210 . In some embodiments, the cover 220 may comprise a flexible material having flexibility, which in the industry refers to a material having a specific strength and a specific flexibility. For example, such materials include polyimide, polycarbonate, polyvinyl chloride, polystyrene, polyether sulfide, polyester, polyamide amine, polybutene, polyethylene, polymethyl methacrylate, polybutylene terephthalate, polyethylene terephthalate. , polyether ether ketone, polyurethane, polyether imide, polytetrafluoroethylene, acrylic, or combinations thereof. Accordingly, the cover 220 and the touch sensor 100a together can realize the bending requirement of the touch display module 200 .

In some embodiments, the touch display module 200 further includes a polarization layer 230 , which may be, for example, a liquid crystal coated polarization layer. In some embodiments, the polarization layer 230 may be disposed between the display panel 210 and the touch sensor 100a. For example, the polarization layer 230 may be formed directly on the surface of the display panel 210 . That is, a structural layer (not shown) of the display panel 210 is used as a substrate for forming the polarization layer 230 . In some embodiments, the polarization layer 230 may be flexible to realize the bending requirements of the touch display module 200 in conjunction with the touch sensor 100a.

In some embodiments, the touch display module 200 further includes a protective layer 240 . The protective layer 240 may cover the entire surface of the touch sensor 100a, for example. That is, the protective layer 240 covers the first touch electrode layer 120 and the peripheral circuit layer 130 of the touch sensor 100a, and provides electrical insulation between the adjacent electrode line L and the adjacent peripheral circuit. recharge In some embodiments, the protective layer 240 may be a hard coating layer comprising an insulating material, such as, but not limited to, a non-conductive resin or other organic material. In some embodiments, the protective layer 240 is flexible to realize the bending requirements of the touch display module 200 with the touch sensor 100a. Additionally, an adhesive layer, such as an optically clear adhesive, may optionally be disposed between each layer to facilitate bonding between the layers.

In the case of the above-mentioned layer, the display panel 210, the polarization layer 230, and the protective layer 240 have the respective touch sensors so that the optical component can be disposed corresponding to the hole region H and the holes O1 to O3. Holes O1 to O3 may be provided to correspond to the hole region H of 100a. For example, an optical component may be disposed on the surface of the display panel 210 facing away from the touch sensor 100a to correspond to the hole region H and the holes O1 to O3 . Accordingly, the touch display module 200 having an optical component corresponding to the visible area VA may be formed, thereby realizing the requirement of a narrow bezel for the touch display module 200 . In some embodiments, optical components may be further accommodated in holes O1 to O3 according to actual needs, and the actual receiving depths of optical components in holes O1 , O2 and even holes O3 may be adjusted as needed. can be designed

5B is a cross-sectional view illustrating a touch display module 200a according to some other embodiments of the present disclosure. At least one difference between the touch display module 200a of FIG. 5B and the touch display module 200 of FIG. 5A is that the polarization layer 230 of the touch display module 200a is disposed between the touch sensor 100a and the cover 220 . in that it can be placed in For example, the polarization layer 230 may be formed directly on the surface of the cover 220 . That is, the cover 220 is used as a substrate for forming the polarization layer 230 .

According to the above-described embodiment of the present disclosure, since the touch sensor of the present disclosure has a hall area disposed corresponding to the visible area, when the touch sensor is integrated into a touch display module having an optical function, the optical component of the touch display module may be disposed to correspond to the hole area. As a result, the space in the peripheral area for arranging the optical component can be saved, and the design requirement of a narrow bezel for the touch display module is further achieved. Additionally, since the optical component of the touch display module is disposed to correspond to the visible region, arranging the peripheral wiring in the peripheral region of the disposed touch sensor does not need to avoid the position of the optical component, and the curvature of the peripheral region affects the optical component. not limited by Thus, the touch sensor can achieve various curvature designs. On the other hand, through the arrangement of the touch electrodes and the design of the electrode pattern in the touch electrode layer, the touch electrode can maintain a good touch function while bypassing the hole area. Additionally, in the manufacturing process of the touch sensor of the present disclosure, the manufacturing steps may be flexibly adjusted according to actual needs, thereby improving the convenience of the manufacturing process.

Although the present disclosure has been described in considerable detail with reference to specific embodiments thereof, other embodiments are possible. Accordingly, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.

It will be apparent to those skilled in the art that various modifications and changes can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, this disclosure is intended to cover modifications and variations of this disclosure provided they come within the scope of the following claims.

Claims (19)

A touch sensor having a visible area and a peripheral area on at least one side of the visible area, the touch sensor comprising:
a substrate having a hole area corresponding to the visible area, the hole area having a first edge; and
a first touch electrode layer disposed on the substrate and corresponding to the visible region - the first touch electrode layer includes a first electrode line extending in a first direction, the first electrode line extending in the first direction has a first portion close to the hole region and a second portion far away from the hole region along a first portion of the line is disposed adjacent the first edge along the contour of the hole area;
Including, a touch sensor. The touch sensor of claim 1 , wherein the first touch electrode layer comprises a matrix and a plurality of metal nanostructures distributed within the matrix. The touch sensor according to claim 1, wherein the hole area further has a second edge, and a portion of the second edge and a portion of the first edge are located on opposite sides of the hole area. According to claim 3, wherein the first touch electrode layer further comprises a second electrode line extending along the first direction, the second electrode line is adjacent to the first electrode line from the first electrode line spaced apart, the second electrode line has a first portion close to the hole region and a second portion far away from the hole region along the first direction, and the first portion of the second electrode line includes the first portion of the second electrode line connected to a second portion of the second electrode line, wherein the first portion of the second electrode line is disposed adjacent to the second edge along the contour of the hole region. 5. The method of claim 4, wherein a distance between a first portion of the first electrode line and a first portion of the second electrode line is a distance between a second portion of the first electrode line and a second portion of the second electrode line. The bigger one, the touch sensor. The touch sensor according to claim 4, wherein at least a portion of the first portion of the first electrode line is spaced apart from at least a portion of the first portion of the second electrode line by the hole region. The touch sensor of claim 4 , wherein the second portion of the first electrode line and the second portion of the second electrode line are substantially parallel. 5. The method of claim 4, wherein the distance between the first portion of the first electrode line and the first edge of the hole region is 100 μm to 400 μm, and the first part of the second electrode line and the second edge of the hole region The distance between them will be 100 μm to 400 μm, the touch sensor. 5. The method of claim 4, wherein the connecting portion of the first portion of the first electrode line and the second portion of the first electrode line has a rounded corner, and the first portion of the second electrode line and the second portion of the second electrode line The touch sensor, wherein the connection of the two parts has rounded corners. The touch sensor of claim 1 , wherein the first electrode line includes a plurality of branch lines disposed at regular intervals, and the branch lines are connected in parallel. 11. The method of claim 10, wherein when the branch lines simultaneously encounter the hole area along the first direction, the branch lines join together to be adjacent to a first edge of the hole area along the contour of the hole area The one that becomes, the touch sensor. The method of claim 11, wherein the first electrode line of the first touch electrode layer further has a third portion, and the second portion of the first electrode line and the third portion of the first electrode line are the first electrode the third portion is attached to the first portion of the first electrode line such that a first portion of the first electrode line constitutes a portion to which the branch lines are coupled together, constituting two of the branch lines of a line. What is connected is the touch sensor. The touch sensor of claim 1 , further comprising a second touch electrode layer, the substrate having a first surface and a second surface facing away from the first surface, the first touch electrode layer and the second touch electrode layer is disposed on the first surface and the second surface of the substrate, respectively; or the first touch electrode layer and the second touch electrode layer are disposed on a side surface of the first surface or the second surface of the substrate, and are electrically insulated by an insulating layer. The method of claim 13 , wherein the second touch electrode layer includes a fifth electrode line extending in a second direction, the second direction being perpendicular to the first direction, and the fifth electrode line extending in the second direction. along a direction having a first portion close to the hole region and a second portion remote from the hole region, wherein a first portion of the fifth electrode line is connected to a second portion of the fifth electrode line, the fifth electrode line being connected to the fifth electrode line. The first portion of the electrode line is disposed adjacent to the edge of the hole region along the contour of the hole region, the touch sensor. In the touch display module,
display panel; and
The touch sensor of claim 1 disposed on the display panel
Including, a touch display module. 16. The method of claim 15,
a cover disposed on the touch sensor
Further comprising, a touch display module. 17. The method of claim 16,
a polarizing layer disposed between the display panel and the touch sensor or between the touch sensor and the cover
Further comprising, a touch display module. The touch display module according to claim 15, wherein the display panel has a hole corresponding to the hole area. 19. The method of claim 18,
an optical component received in the hole
Further comprising, a touch display module.

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