KR102584055B1 - 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 of the visible area includes 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 corresponding to the visible area on the substrate. 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 distant 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 the outline of the hole area.

Description

Touch sensor and touch display module{TOUCH SENSOR AND TOUCH DISPLAY MODULE}

This disclosure relates to a touch sensor and a touch display module including a touch sensor.

With the rapid advancement of technology, touch display functionality has been integrated into various electronic devices (e.g., mobile phones, tablet computers, etc.). The display surface of an electronic device includes a visible area and a peripheral area, where the peripheral area is generally disposed around the visible area and the extent of the peripheral area is such that a shielding layer covers some peripheral wiring and components corresponding to the peripheral area of the electronic device. To be shielded, 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 to prevent it from becoming visible and affecting the visual effect. Additionally, electronic devices typically include optical components, such as front lenses, light sensors, etc., which are also placed in the peripheral area and occupy much more space in the peripheral area. Therefore, there is no possibility of reducing the size of the peripheral area, and therefore the electronic device cannot meet the design requirements of narrow bezels. Moreover, the circuit layout of the touch panel will be affected because the arrangement of optical components will cause mechanism interference problems. Therefore, how to provide a touch panel that can maintain touch sensing functionality while meeting the requirements of narrow bezels for electronic devices 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 area corresponding to the visible area, and the hole area has a first edge. The first touch electrode layer is disposed corresponding to the visible area on the substrate. 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 distant 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 the outline of the hole area.

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 region further has a second edge, where a portion of the second edge and a portion of the first edge are located on opposite sides of the hole region.

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

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 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 100 μm to 400 μm.

In some embodiments of the present disclosure, the connection portion of the first portion of the first electrode line and the second portion of the first electrode line has rounded corners, and the connection portion of the first portion of the first electrode line and the second portion of the first electrode line The connection part has rounded corners.

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

In some embodiments of the present disclosure, when the branch lines simultaneously encounter a hole region along the first direction, the branch lines are joined together to be adjacent a first edge of the hole region along the outline of the hole region.

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 part is connected to the first part of the first electrode line, constituting two of the branch lines, and the first part of the first electrode line constitutes a part where the branch lines are joined together.

In some embodiments of the present disclosure, the touch sensor further includes a second touch electrode layer, the substrate has a first surface and a second surface facing away from the first surface, the first touch electrode layer and a second touch electrode layer. 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 of the first surface or the second surface of the substrate and are electrically insulated by an 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 is perpendicular to the first direction, and the fifth electrode line is along the second direction. having a first portion close to the hole region and a second portion distant 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 connected to the hole region. It is placed adjacent to the edge of the hole area along the contour of the area.

According to the above-described embodiments 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 polarizing 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 received in the hole.

According to the above-described embodiments of the present disclosure, since the touch sensor of the present disclosure has a hole area disposed corresponding to the visible area, when the touch sensor is integrated into a touch display module with an optical function, the optical component of the touch display module (eg, a lens) may be disposed to correspond to the hole area. As a result, space in the peripheral area for placing optical components can be saved, and the design requirement of narrow bezels for the touch display module is further achieved. Additionally, because the optical components of the touch display module are arranged corresponding to the hole area, arranging peripheral wiring in the peripheral area of the touch sensor does not need to avoid the location of the optical components, and the curvature of the peripheral area is limited by the optical components. It doesn't work. Accordingly, the touch sensor can achieve various curved designs. Meanwhile, through the arrangement of the touch electrode and the design of the electrode pattern in the touch electrode layer, the touch electrode can maintain good touch function while bypassing the hole area.

The present disclosure may be more fully understood by reading the following detailed description of the embodiments, while referring to the accompanying drawings.
1 is a top view illustrating a touch sensor according to some embodiments of the present disclosure;
FIG. 2A is a partial enlarged view illustrating area R1 of the touch sensor in FIG. 1 according to some embodiments of the present disclosure;
2B and 2C are partial enlarged views illustrating area R1 of the touch sensor in FIG. 1 according to some other embodiments of the present disclosure;
3 is a top view illustrating a touch sensor according to some other embodiments of the present disclosure;
FIG. 4 is a partial enlarged view illustrating area R2 of the touch sensor in FIG. 3 according to some embodiments of the present disclosure;
Figure 5A is a cross-sectional view illustrating a touch display module according to some embodiments of the present disclosure;
Figure 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 identical or similar 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 It should be understood that no part or part should be limited by these terms. These terms are used only to distinguish one element, component, region, layer or portion from another element, component, region, layer or portion. Accordingly, without departing from the teachings herein, a “first element,” “first component,” “first region,” “first layer,” or “first portion” described below refers to a second element, It may also be referred to as a second component, second region, second layer, or second portion.

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

The present disclosure provides a touch sensor having a hole area disposed corresponding to a visible area and a touch display module integrated with the touch sensor. When a touch sensor is integrated into a touch display module, the optical components of the touch display module can be placed corresponding to the hole area. Accordingly, space in the peripheral area for placing optical components can be saved, so that the design requirements of narrow bezels for the touch display module are further achieved. Additionally, through the arrangement of the touch electrode and the design of the electrode pattern in the touch electrode layer, the touch electrode can maintain good touch function while bypassing the hole area.

FIG. 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 of the visible area (VA). For example, the peripheral area PA may be a frame-shaped area disposed around the visible area VA (i.e., including the right, left, upper, and lower sides). As another example, the peripheral area PA may be an L-shaped area disposed on the left and lower sides 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. Including, but not limited to, transparent materials such as.

In some embodiments, the substrate 110 is provided with a hole area (H) corresponding to the visible area (VA). When the touch sensor 100 of the present disclosure is integrated into a device with optical functionality (e.g., a display, a mobile phone, or a tablet computer), the optical component of the device may be installed at a location corresponding to the hole area (H). there is. That is, there is no need to secure space corresponding to the peripheral area (PA) of the device for installing optical components, thereby meeting the design requirements of narrow bezels for the device. Compared to a conventional device in which optical components are disposed correspondingly to the peripheral area (PA), the bezel size of the device of the present disclosure can be reduced by about 150% or more (e.g., the width of the peripheral area (PA) can be reduced by more than 150%. may be reduced). In detail, when the touch sensor 100 of the present disclosure is integrated into a device with 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 features 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. are placed accordingly. 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 line L ) may be arranged at regular intervals along the second direction D2, where the first direction D1 is perpendicular to the second direction D2. Additionally, the first touch electrode layer 120 may extend further 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/abrasion resistant surface protection, thereby improving the surface strength of the first touch electrode layer 120. Specific polymers described above may be, for example, polyacrylates, epoxy resins, polyurethanes, polysiloxanes, polysilanes, poly(silicon-acrylic acid), or combinations thereof. In some embodiments, to improve the UV resistance of the first touch electrode layer 120 and thus extend its service life, the matrix includes, but is not limited to, surfactants, crosslinkers, stabilizers (e.g., antioxidants or UV stabilizers). does not), a polymerization inhibitor, or a combination of any of the foregoing ingredients.

As used herein, the term "metal nanowire" is a collective noun referring to an assembly of metal wires containing a plurality of metal elements, metal alloys, or metal compounds (including metal oxides), and the metal nanowires contained therein It should be understood that the number does not affect the scope of the present disclosure. In some embodiments, the cross-sectional size (e.g., 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, metal nanowires have a large aspect ratio (i.e., length:diameter of cross-section). Specifically, the aspect ratio of the metal nanowire may be 10 to 100,000. More specifically, the aspect ratio of the metal nanowire may be greater than 10, preferably greater than 50, and 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 and are also within the scope of this disclosure.

FIG. 2A is a partial 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 the upper border of the visible area VA to the lower border of the visible area VA along the first direction D1 and along the second direction D2. They are arranged at regular intervals corresponding to the visible area (VA). In some embodiments, to provide lower line resistance and higher optical transmittance, the line width of each electrode line (L) may be 1 μm to 200 μm, and the distance between adjacent electrode lines (L) (i.e. , line pitch) may be from 10 μm to 400 μm. As mentioned above, since the substrate 110 of the touch sensor 100 has a hole area (H) corresponding to the visible area (VA), the electrode line (L) adjacent to the hole area (H) has a hole area (H). It can be configured to have good compatibility with the area (H). More specifically, the electrode line L adjacent to the hole region H may be configured in particular to prevent blocking the hole region H, and also especially configured to maintain the line resistance required by the design. It 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 a first electrode line L1 adjacent to the hole region H. In some embodiments, the first electrode line L1 has a first portion L11 closer to the hole region H and a second portion L12 farther from the hole region H along the first direction D1. ), and the first part (L11) is connected to the second part (L12). More specifically, 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 outline of the hole region (H). ), while the second portion (L12) of the first electrode line (L1) is not immediately adjacent to the first edge (S1) of the hole region (H) and is substantially straight. am. It should be noted that, as used hereinafter, "two elements (or two parts) immediately adjacent to each other" refers to the absence of any 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 two second portions L12 respectively connected to the two ends of the first portion L11 along the first direction D1. The second portions L12 are substantially aligned with each other along the first direction D1.

In some embodiments, the first electrode line L1 includes a plurality of branch lines arranged at regular intervals, and the branch lines are connected in parallel. Specifically, the first electrode line (L1) additionally has a third portion (L13), and the second portion (L12) and the third portion (L13) of the first electrode line (L1) are the first electrode line (L1). ) constitutes two of the branch lines. That is, the second part L12 and the third part L13 of the first electrode line L1 are arranged parallel to each other, spaced apart from each other, and connected in parallel (i.e., the second part L12 and the third part L13 of the first electrode line L1 are arranged parallel to each other, spaced apart from each other, and connected in parallel. The second part (L12) and the third part (L13) are connected to the same peripheral line). Meanwhile, when the branch lines simultaneously meet the hole area (H) along the first direction (D1), the branch lines are adjacent to the first edge (S1) of the hole area (H) along the outline of the hole area (H). are joined together Specifically, when the second part (L12) and the third part (L13) of the first electrode line (L1) meet the hole region (H) at the same time, the second part (L12) of the first electrode line (L1) The third portion (L13) may be coupled together with 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 region (H) along the outline of the hole region (H). 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 where the branch lines are joined 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 two third portions L13 respectively connected to the two ends of the first portion L11 along the first direction D1. The third portions L13 are substantially aligned with each other along 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, where a portion of the second edge S2 and a portion of the first edge S1 are on opposite sides of the hole region H. is located in, 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 along the outline of the hole region (H) ), while the second portion (L22) of the second electrode line (L2) is not immediately adjacent to the second edge (S2) of the hole region (H) and is substantially straight. am. 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 (e.g., the second portion L2 ) and the second part 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 connected to the hole region H to prevent blocking the hole region H and 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 arranged at regular intervals, and the branch lines are connected in parallel. Specifically, the second electrode line (L2) additionally 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 the second electrode line (L23). It constitutes one of the branch lines of the second electrode line L2, and the third portion L23 constitutes another 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 the hole region H simultaneously while extending along the first direction D1, the two branch lines of the second electrode line L2 are joined together as one. 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 determined by the second portion (L12) of the first electrode line (L1) and the second portion (L12) of the second electrode line (L2). It is greater than the distance (A2) between the parts (L22). Therefore, 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 is greater than the distance A2 between the second part L12 of the first electrode line L1 and the second part L22 of the second electrode line L2. 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), and 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. 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 part L11 of the first electrode line L1 and the first part L21 of the second electrode line L2 are formed in the hole region H along the outline 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 outline 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 between the first portion L11 and the second portion L12 of the first electrode line L1 may have rounded corners, and the first portion L21 of the second electrode line L2 may have rounded corners. ) and the second part (L22) may also have rounded corners. The design of the rounded corners prevents the first electrode line (L1) and the second electrode line (L2) from dissipating excessive heat due to current accumulation at the connection (i.e., the location near the hole region (H), This reduces the occurrence of thermal effects and maintains 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 The distance (A4) between the first portion (L21) of (L2) and the second edge (S2) of the hole region (H) is 100 μm to 400 μm. This distance allows the touch sensor 100 to provide touch resolution, reliability, and production yield. In detail, when the distance is less than 100 μm, the production yield decreases due to difficulty in 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 exceeds 400 μm, the arrangement of the electrode lines (L) near the hole area (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 located directly adjacent to the first electrode line L1 on the side of the first electrode line L1 facing away from the second electrode line L2. It may further include three electrode lines (L3). The third electrode line (L3) has a first part (L31) and a second part (L32) connected to each other, where the first part (L31) of the third electrode line (L3) is the first part (L31) of 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 extends substantially along the first portion L11 of the first electrode line L1. 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 encounter the hole region H when extending along the first direction D1. Accordingly, the third electrode line L3 is designed to extend from the first electrode line L1 under the premise of maintaining the required distance for touch detection. The degree of bending of the first part L31 of the third electrode line L3 is less than the degree of bending of the first part L11 of the first electrode line L1 (that is, the degree of bending of the first part L11 of the third electrode line L3 The shape of part (L31) is closer to a straight line). Meanwhile, in order to prevent the third electrode line L3 from excessively discharging heat due to current accumulation at the connection portion, thereby reducing the occurrence of thermal effects, the first portion of the third electrode line L3 ( The connection between L31) and the second part L32 may have rounded corners.

In some embodiments, the first touch electrode layer 120 is located directly adjacent to the second electrode line L2 on the side of the second electrode line L2 facing away from the first electrode line L1. It further includes 4 electrode lines (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 also extends along the second electrode line L2 (second electrode line L2 ), the fourth electrode line L4 may be a straight line extending along the first direction D1 because the distance required for touch detection is maintained from the third portion L23) of the sensor.

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

In this embodiment, because the first electrode line (L1) adopts a design in which two branch lines are combined into one, the line resistance of the first electrode line (L1) is changed to that of the other electrode line (L1) in which the two branch lines are not combined into one. For example, it is compensated for by being higher than the line resistance of the second electrode line (L2). However, to maintain the line resistance of each electrode line L of the first touch electrode layer 120 near the lower limit of the controller's sensing range, the first touch electrode layer 120 has a lower surface resistance specification. A conductive layer, which is a metal nanowire layer, can be adopted. Accordingly, even if the first electrode line L1 has a higher line resistance due to the design in which two branch lines are combined into one, such line resistance can still be maintained within a range that can be sensed by the controller.

FIGS. 2B and 2C are partial enlarged views illustrating the area 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 relationship, materials, and advantages, which will not be repeated later, and only the differences will be described below. You must understand that this will be discussed in. Additionally, to simplify the drawing, some of the electrode lines L are omitted in FIGS. 2B and 2C, and a portion of the first electrode line L1 and the second electrode line closest to the hole region H are shown. 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 lies in the shape of the hole region H. Specifically, the hole area 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 each form a hole region H along the outline of the hole region H. is disposed adjacent to the first edge (S1) and the second edge (S2) to form a rectangular shape. In this embodiment, because the hole region H has a rectangular shape, each of the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 has two or more curves. It has part (B). In some embodiments, the curved portion B prevents the first electrode line L1 and the second electrode line L2 from dissipating excessive heat due to current accumulation in the curved portion B, thereby It may have rounded corners to reduce the generation of thermal effects and maintain normal touch sensing functionality.

See Figure 2c. At least one difference between the touch sensor 100 shown in FIG. 2C and the touch sensor 100 shown in FIG. 2A also lies in the shape of the hole region H. Specifically, the hole area H in the touch sensor 100 of FIG. 2C has a pill shape. More specifically, the pill shape includes a 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 each form a hole region H along the outline of the hole region H. is disposed adjacent to the first edge (S1) and the second edge (S2) to form a pill-shaped shape. In this embodiment, because the hole region H has a pill-shaped shape, the shape of the first portion L11 of the first electrode line L1 and the first portion L21 of the second electrode line L2 The shape is each a smooth curve (i.e., no edge angle). Accordingly, the first electrode line L1 and the second electrode line L2 are prevented from emitting excessive heat due to current accumulation, thereby reducing the occurrence of thermal effects and maintaining 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 region H may also have other suitable shapes (e.g., ellipses, polygons, etc.), and each electrode line L may also be configured to match the shape of the hole region H. It can be configured appropriately. In the following description, a touch sensor according to another embodiment of the present disclosure will be described.

Figure 3 is a plan view illustrating a touch sensor 100a according to some other embodiments of the present disclosure. FIG. 4 is a partial enlarged view illustrating the area 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. It is constructed to form a structure. More specifically, the first touch electrode layer 120 is connected to the first surface of the substrate 110 (e.g., so that the first touch electrode layer 120 and the second touch electrode layer 122 are electrically insulated from each other). The second touch electrode layer 122 is disposed on the second surface (e.g., the bottom 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 the line (L). In some embodiments, each electrode line L of the second touch electrode layer 122 may extend from the left border of the visible area VA to the right border of the visible area VA along the second direction D2. and are arranged at regular intervals corresponding 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 a fifth electrode line ( L5) and the sixth electrode line (L6) have a first part (L51, L61) closer to the hole area (H) and a second part (L52) further away from the hole area (H) along the second direction (D2). , L62). The first part L51 and the second part L52 of the fifth electrode line L5 are connected to each other, and the first part L61 and the second part 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 along the second direction D2, the fifth electrode line L5 and the sixth electrode line ( The first portions (L51, L61) of the hole region (L6) follow the outline of the hole region (H) and a portion of the third edge (S3) and the first edge (S1) and the second edge (S2) of the hole region (H) is placed adjacent to. The difference between the second touch electrode layer 122 and the first touch electrode layer 120 lies 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 It should be understood that the construction, connections, materials and advantages are substantially the same and will not be repeated hereafter. For example, the fifth electrode line L5 and the sixth electrode line L6 of the second touch electrode layer 122 are the first electrode line L1 and the second electrode of the first touch electrode layer 120, respectively. It has the same component composition, materials and advantages as line (L2).

Meanwhile, in order to meet the requirements 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 direction of extension 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 , L61), while the first parts (L11, L21) of the first electrode line (L1) and the second electrode line (L2) are connected to the fifth electrode line (L5) and the sixth electrode line (L6). is completely offset from the first portions (L51, L61) of . In some embodiments, the distance A8 between the first portions (L51, L61) of the fifth electrode line (L5) and the sixth electrode line (L6) and the edge of the hole region (H) is equal to or greater than the first electrode line (L1). ) and the distance (A7) between the first portions (L11, L21) of the second electrode line (L2) and the edge of the hole region (H).

Although not shown in the drawings, the touch sensor 100a with the double-sided single-layer electrode structure in FIG. 3 may also have a hole region H having a rectangular shape or pill shape as 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 a side of the first or second surface of the substrate 110 and are electrically insulated by an insulating layer. . It should be understood that the component connection relationships, materials, and advantages described above will not be repeated hereafter. 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 includes steps S10 to S14, and steps S10 to S14 may be performed sequentially. 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, of the substrate 110. A hole area (H) is provided in the first area. In step S12, a conductive layer is formed on the first region of 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 a second electrode line L2 ) 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 outline of the hole region H. In the following description, the above-described steps will be described in more detail.

First, in step S10, a substrate 110 is provided, where the substrate 110 has a first area and a second area corresponding to the visible area VA and the peripheral area PA, respectively, and the substrate 110 ) A hole area (H) is provided in the first area. In some embodiments, the distance A9 between the edge of the hole region H and the boundary between the first and second regions is 100 μm or more. Accordingly, the hole area H and the boundary may be separated by a certain distance to provide space for disposing at least one electrode line L sufficient for touch detection to maintain touch resolution. Specifically, when the distance A9 is less than 100 μm, the conductive layer located between the hole region H and the boundary is insufficient or difficult to be patterned, thereby affecting the integrity of the electrode pattern near the hole region H. This can affect touch resolution and reduce touch resolution.

Next, in step S12, a conductive layer comprising at least metal nanowires (e.g., a silver nanowire material layer, a gold nanowire material layer, or a copper nanowire material layer) is formed in the first region of the substrate 110. formed on the In some embodiments, a dispersion or slurry with metal nanowires may be formed on the substrate 110 by coating, and the dispersion or slurry may then be cured to cause the metal nanowires to adhere to the surface of the substrate 110. It dries. After the curing or drying step, the solvent and other materials in the dispersion or slurry will volatilize and the metal nanowires may be randomly distributed on the surface of the substrate 110, or preferably the metal nanowires may be distributed over the conductive layer. It can be fixed on the surface of the substrate 110 without falling off to form a . Metal nanowires in the conductive layer can contact each other to provide a continuous current path, forming a conductive network. That is, metal nanowires contact each other at their intersection positions to form a path for transferring electrons.

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 compatibility between the metal nanowires and the solvent and stability of the metal nanowires in the solvent. Specifically, additives, surfactants and/or binders include, for example, carboxymethyl cellulose, hydroxyethyl cellulose, hypromellose, fluorosurfactants, sulfosuccinate sulfonates, sulfates, phosphates, disulfonates. Or it may be a combination thereof. A dispersion or slurry containing metal nanowires may be formed on the surface of substrate 110 in any manner, such as, but not limited to, processes such as screen printing, spray coating, or roller coating. In some embodiments, a roll-to-roll process may be performed such that a dispersion or slurry containing metal nanowires is coated on the surface of the continuously supplied substrate 110 .

In some embodiments, post-processing may be further performed to improve the contact properties of the metal nanowires (e.g., increase the contact area) at the intersection of the metal nanowires to improve conductivity. Post-processing 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 can be used to apply pressure to it. 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 and pressing steps of post-processing can 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) can be applied through the roller, and the roller is 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). In some embodiments, metal nanowires may be exposed to a reducing agent for post-processing. For example, metal nanowires containing silver nanowires may preferably be exposed to a silver reducing agent for post-processing. 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 gaseous 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 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 outline 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), fourth electrode line (L4) and each electrode line (L) having a substantially straight shape. The layer can be patterned. For a detailed description of each electrode line L, the above description may be referred to, and this will not be repeated hereafter. 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 (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 step S14 is performed, 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 stamping, for example. After the above steps, the touch sensor 100 as shown in FIG. 1 may be formed, where the hole area H may be a solid area or a through hole.

In some alternative embodiments, a different process flow may be employed to fabricate the touch sensor 100 of the present disclosure to fabricate the touch sensor 100 where 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 steps S20 to S26, and steps S20 to S26 may be performed sequentially. 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, of the substrate 110. A hole area (H) is provided in the first area. In step S22, a conductive layer is formed on the first region of 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 a second electrode line L2 ) is patterned to form the first touch electrode layer 120 such that a portion of the through hole is disposed adjacent 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 the description of the above-described embodiment may be referred to for the remaining omitted descriptions.

In steps S22 to S24, 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, so that while forming the through hole, the conductive layer is formed on the first region of the substrate 110. Holes may be formed in the corresponding conductive layer. In other words, the through hole in substrate 110 and the hole in the conductive layer are formed in the same process. In some embodiments, the through holes in the substrate 110 and the holes in the conductive layer may be formed, for example, by stamping. Meanwhile, in step S26, when patterning the conductive layer 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 expanded. After the above steps, the touch sensor 100 of the present disclosure can also be formed. The specific structure is as described above and will not be repeated hereafter.

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. In detail, in this embodiment, the manufacturing method of the touch sensor 100 includes steps S30 to S36, and steps S30 to S36 may be performed sequentially. 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, of the substrate 110. 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 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 a second electrode line L2 ) is patterned to form the first touch electrode layer 120 such that a portion of the through hole is disposed adjacent 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 the description of the above-described embodiment may be referred to for the remaining omitted descriptions.

In steps S32 to S34, since a through hole is previously formed in the substrate 110 and then a conductive layer is formed on the first region of the substrate 110, an additional hole may be formed in the conductive layer. no need. Additionally, the conductive layer is formed to selectively avoid locations of through holes. After the above steps, the touch sensor 100 of the present disclosure can 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 is flexible according to actual needs to improve convenience in the manufacturing process. It can be adjusted.

FIG. 5A is a cross-sectional view illustrating a touch display module 200 according to some embodiments of the present disclosure. In some embodiments, the touch sensor described above (taking the touch sensor 100a of FIG. 3 as an example) may be integrated into a touch display module 200, such as a display, mobile phone, tablet computer, etc. The touch display module 200 may have the above-described 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, display panel 210 may be, for example, an organic light emitting diode (OLED) panel. In some embodiments, display panel 210 may be flexible to realize the bending requirements of touch display module 200 along with touch sensor 100a.

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

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

In some embodiments, touch display module 200 further includes a protective layer 240. The protective layer 240 may cover, for example, the entire surface of the touch sensor 100a. 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. Charge. In some embodiments, 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 along with the touch sensor 100a. Additionally, a layer of adhesive, 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-described layer, the display panel 210, the polarization layer 230, and the protective layer 240 are each equipped with a touch sensor so that the optical components can be disposed correspondingly to the hole region H and the holes O1 to O3. Holes O1 to O3 may be provided to correspond to the hole area H of (100a). For example, optical components may be disposed corresponding to the hole area H and the holes O1 to O3 on the surface of the display panel 210 facing away from the touch sensor 100a. Accordingly, the touch display module 200 having an optical component corresponding to the visible area VA can be formed, thereby realizing the requirement of a narrow bezel for the touch display module 200. In some embodiments, optical components may be additionally received in holes O1 to O3 as required, and the actual receiving depth of the optical components in holes O1, O2 and even in hole O3 may be adjusted as required. can be designed.

FIG. 5B is a cross-sectional view illustrating a touch display module 200a according to another embodiment 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 between the touch sensor 100a and the cover 220. The point is that it can be placed in . For example, polarization layer 230 may be formed directly on the surface of cover 220. That is, the cover 220 is used as a substrate to form the polarization layer 230.

According to the above-described embodiments of the present disclosure, since the touch sensor of the present disclosure has a hole area disposed corresponding to the visible area, when the touch sensor is integrated into a touch display module with an optical function, the optical component of the touch display module may be arranged to correspond to the hole area. As a result, space in the peripheral area for placing optical components can be saved, and the design requirement of narrow bezels for the touch display module is further achieved. Additionally, because the optical components of the touch display module are arranged corresponding to the visible area, arranging peripheral wiring in the peripheral area of the placed touch sensor does not require avoiding the position of the optical components, and the curvature of the peripheral area does not affect the optical component. is not limited by Accordingly, the touch sensor can achieve various curved designs. Meanwhile, through the arrangement of the touch electrode and the design of the electrode pattern in the touch electrode layer, the touch electrode can maintain good touch function while bypassing the hole area. Additionally, in the manufacturing process of the touch sensor of the present disclosure, manufacturing steps can 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 included herein.

It will be apparent to those skilled in the art that various modifications and changes may be made to the structure of the present disclosure without departing from the scope or spirit of the present disclosure. In consideration of the foregoing, this disclosure is intended to cover modifications and variations of this disclosure provided they fall 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, 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 area, wherein the first touch electrode layer includes a first electrode line extending along a first direction, the first electrode line extending in the first direction. It has a first part close to the hole area and a second part far from the hole area, wherein the first part of the first electrode line is connected to the second part of the first electrode line, and the first electrode is connected to the second part of the first electrode line. The first part of the line is disposed adjacent to the first edge along the outline of the hole area -
Including,
the hole region further has a second edge, a portion of the second edge and a portion of the first edge being located on opposite sides of the hole region,
The first touch electrode layer further includes a second electrode line extending along the first direction, the second electrode line is disposed adjacent to the first electrode line and spaced apart from the first electrode line, A second electrode line has a first portion close to the hole region and a second portion distant from the hole region along the first direction, and the first portion of the second electrode line is the second portion of the second electrode line. connected to a portion, wherein the first portion of the second electrode line is disposed adjacent the second edge along the outline of the hole region,
The first electrode line includes a plurality of first branch lines arranged at regular intervals, and the first branch lines are connected in parallel,
The first electrode line further has a third portion, and the second portion of the first electrode line and the third portion of the first electrode line constitute two of the first branch lines of the first electrode line. and the first part of the first electrode line is coupled to the second part and the third part of the first electrode line,
The second electrode line includes a plurality of second branch lines arranged at regular intervals, the second branch lines are connected in parallel, and the second branch lines are not coupled to each other. The touch sensor of claim 1, wherein the first touch electrode layer includes a matrix and a plurality of metal nanostructures distributed within the matrix. delete delete The method of claim 1, wherein the distance between the first portion of the first electrode line and the first portion of the second electrode line is the distance between the second portion of the first electrode line and the second portion of the second electrode line. A larger one, the touch sensor. The touch sensor of claim 1, 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 1 , wherein the second portion of the first electrode line and the second portion of the second electrode line are substantially parallel. The method of claim 1, 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 portion of the second electrode line and the second edge of the hole region are The touch sensor, wherein the distance between them is 100 μm to 400 μm. The method of claim 1, wherein the connecting portion of the first portion of the first electrode line and the second portion of the first electrode line has rounded corners, and the first portion of the second electrode line and the second portion of the second electrode line have rounded edges. A touch sensor wherein the connection portion of the two parts has rounded corners. delete The method of claim 1, wherein when the first branch lines simultaneously encounter the hole area along the first direction, the first branch lines follow the outline of the hole area and extend to a first edge of the hole area. A touch sensor that is joined together to be adjacent. delete 2. The method of claim 1, wherein the touch sensor further comprises a second touch electrode layer, the substrate has 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 the first surface or a side of the second surface of the substrate and are electrically insulated by an insulating layer. 14. The method of 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 line is having a first portion close to the hole region and a second portion distant from the hole region along a direction, wherein the first portion of the fifth electrode line is connected to the second portion of the fifth electrode line, and the fifth electrode line is connected to the second portion of the fifth electrode line. A first portion of the electrode line is disposed adjacent an edge of the hole area along the outline of the hole area. In the touch display module,
display panel; and
The touch sensor of claim 1 disposed on the display panel.
A touch display module including. According to clause 15,
Cover disposed on the touch sensor
A touch display module further comprising: According to clause 16,
Polarizing layer disposed between the display panel and the touch sensor or between the touch sensor and the cover
A touch display module further comprising: The touch display module of claim 15, wherein the display panel has a hole corresponding to the hole area. According to clause 18,
Optical component accommodated in the hole
A touch display module further comprising: