Touch Sensor and Touch Display Device Comprising the Touch Sensor

Abstract

This application relates to a touch sensor and a touch display device including the touch sensor. The touch sensor includes: first touch electrodes respectively coupled to first touch lines, the first touch electrodes being arranged in a first column; second touch electrodes respectively coupled to second touch lines, the second touch electrodes being arranged in a second column adjacent to the first column in a row direction; a first multiplexer to which the first touch lines are coupled; and a second multiplexer to which the second touch lines are coupled, wherein the first touch electrodes have respective areas that become smaller as they become closer to the first multiplexer along a first direction, wherein the second touch electrodes have respective areas that become smaller as they become closer to the second multiplexer along a second direction, and wherein the first direction and the second direction are opposite to each other.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority and benefit of Korean Patent Application No. 10 - 2017 - 0166902, filed with the Korean Intellectual Property Office on December 6, 2017, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate to touch sensors and touch display devices including touch sensors. Background Art

[0004] With the development of information technology, the importance of display devices as a connection medium between users and information has increased. Accordingly, display devices such as liquid crystal display devices, organic light - emitting display devices, and plasma display panels have been increasingly used.

[0005] Such display devices may include touch sensors provided on their display surfaces to act as touch display devices. A user may input information by touching the touch sensor while viewing an image displayed on the display surface of the touch display device. Summary of the Invention

[0006] Embodiments provide a touch sensor and a touch display device including the touch sensor that have spatial efficiency and can improve visibility.

[0007] According to an aspect of the present disclosure, there is provided a touch sensor including a first touch electrode, a second touch electrode, a first multiplexer, and a second multiplexer, wherein the first touch electrodes are respectively coupled to first touch lines, the first touch electrodes are arranged in a first column, the second touch electrodes are respectively coupled to second touch lines, the second touch electrodes are arranged in a second column adjacent to the first column in a row direction, the first touch lines are coupled to the first multiplexer, the second touch lines are coupled to the second multiplexer, wherein the first touch electrodes have respective areas that become smaller as they become closer to the first multiplexer along a first direction, wherein the second touch electrodes have respective areas that become smaller as they become closer to the second multiplexer along a second direction, and wherein the first direction and the second direction are opposite to each other.

[0008] The first touch electrode having the smallest area among the first touch electrodes may be positioned in the same row as the second touch electrode having the largest area among the second touch electrodes, and the second touch electrode having the smallest area among the second touch electrodes may be positioned in the same row as the first touch electrode having the largest area among the first touch electrodes.

[0009] Each of the first touch electrode and the second touch electrode may have a rectangular shape including a first side and a second side parallel to the first side, wherein the first touch electrodes are aligned such that their first sides are positioned on a first straight line extending in the column direction, wherein the second touch electrodes are aligned such that their second sides are positioned on a second straight line extending in the column direction, and wherein the first straight line and the second straight line are parallel to each other.

[0010] For all of the rows, the number of touch lines between the first touch electrode and the second touch electrode on each row in each of the rows may be the same, wherein the touch lines include at least some of the first touch lines and the second touch lines.

[0011] For all of the rows, the sum of the areas of the first touch electrode and the second touch electrode on each row in each of the rows may be the same.

[0012] Each of the first touch electrode and the second touch electrode may have a rhombus shape including a first vertex and a second vertex, wherein the first touch electrodes are aligned such that their first vertices are positioned on a first straight line extending in the column direction, wherein the second touch electrodes are aligned such that their second vertices are positioned on a second straight line extending in the column direction, and wherein the first straight line and the second straight line are parallel to each other.

[0013] For all of the rows, the number of touch lines between the first touch electrode and the second touch electrode on each row in each of the rows may be the same, wherein the touch lines include at least some of the first touch lines and the second touch lines.

[0014] Each of the first touch lines may have a shape that extends obliquely from a vertex of the corresponding first touch electrode and curves in a first direction, and each of the second touch lines may have a shape that extends obliquely from a vertex of the corresponding second touch electrode and curves in a second direction.

[0015] According to aspects of the present disclosure, a touch display device is provided. The touch display device includes a touch sensor and a display panel combined with the touch sensor. Among them, the touch sensor includes first touch electrodes respectively connected to a first touch line, second touch electrodes respectively connected to a second touch line, a first multiplexer, and a second multiplexer. The first touch electrodes are arranged in a first column, the second touch electrodes are arranged in a second column adjacent to the first column in the row direction. The first touch line is connected to the first multiplexer, and the second touch line is connected to the second multiplexer. The first touch electrodes have corresponding areas that gradually become smaller as they approach the first multiplexer along a first direction, and the second touch electrodes have corresponding areas that gradually become smaller as they approach the second multiplexer along a second direction. The first direction and the second direction are opposite to each other. And the display panel includes a pixel region, a pad region, a first path selection region, and a second path selection region. The pixel region includes pixels, and the pixel region is located under the first touch electrodes and the second touch electrodes. The pad region includes pad electrodes. The first multiplexer is positioned in the first path selection region, and the second multiplexer is positioned in the second path selection region.

[0016] The touch sensor may further include third touch electrodes, fourth touch electrodes, a third multiplexer, and a fourth multiplexer. The third touch electrodes are respectively connected to a third touch line, and the third touch electrodes are arranged in a third column adjacent to the second column in the row direction. The fourth touch electrodes are respectively connected to a fourth touch line, and the fourth touch electrodes are arranged in a fourth column adjacent to the third column in the row direction. The third multiplexer is connected to the third touch line and is positioned in the first path selection region. The fourth multiplexer is connected to the fourth touch line and is positioned in the second path selection region.

[0017] The touch display device may further include a first multiplexer line, a second multiplexer line, a third multiplexer line, and a fourth multiplexer line. The first multiplexer line connects the first multiplexer to some of the pad electrodes. The second multiplexer line connects the second multiplexer to some of the pad electrodes. The third multiplexer line connects the third multiplexer to some of the pad electrodes. The fourth multiplexer line connects the fourth multiplexer to some of the pad electrodes.

[0018] The first multiplexer line and the second multiplexer line may extend adjacent to one side of the pixel region, and the third multiplexer line and the fourth multiplexer line may extend adjacent to the other side of the pixel region.

[0019] The first multiplexer line, the second multiplexer line, the third multiplexer line, and the fourth multiplexer line may extend adjacent to one side of the pixel region.

[0020] According to aspects of the present disclosure, a touch sensor is provided that includes a first touch electrode, a second touch electrode, a first multiplexer, a second multiplexer, a third multiplexer, and a fourth multiplexer. The first touch electrodes are respectively coupled to first touch lines and are respectively disposed on a first column and a second column adjacent to the first column in a row direction. The second touch electrodes are respectively coupled to second touch lines and are respectively disposed on the first column and the second column. The first multiplexer is coupled to the first touch lines coupled to the first touch electrodes disposed on the first column. The second multiplexer is coupled to the first touch lines coupled to the first touch electrodes disposed on the second column. The third multiplexer is coupled to the second touch lines coupled to the second touch electrodes disposed on the first column. The fourth multiplexer is coupled to the second touch lines coupled to the second touch electrodes disposed on the second column. The first touch electrodes have respective areas that gradually become smaller as they approach the first multiplexer or the second multiplexer along a first direction. The second touch electrodes have respective areas that gradually become smaller as they approach the third multiplexer or the fourth multiplexer along a second direction. The first direction and the second direction are opposite to each other.

[0021] The number of first touch lines coupled to the first multiplexer, the number of first touch lines coupled to the second multiplexer, the number of second touch lines coupled to the third multiplexer, and the number of second touch lines coupled to the fourth multiplexer may be the same.

[0022] The number of first touch electrodes disposed on the second column may be greater than the number of first touch electrodes disposed on the first column, and the number of second touch electrodes disposed on the first column may be greater than the number of second touch electrodes disposed on the second column.

[0023] Each of the first touch electrodes and the second touch electrodes may have a rectangular shape including a first side and a second side parallel to the first side. The first touch electrodes and the second touch electrodes disposed on the first column are aligned such that their first sides are positioned on a first straight line extending in a column direction. The first touch electrodes and the second touch electrodes disposed on the second column are aligned such that their second sides are positioned on a second straight line extending in a column direction. The first straight line and the second straight line are parallel to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Now, embodiments will be described more fully hereinafter with reference to the accompanying drawings, but the described embodiments may be implemented in different forms and should not be construed as being strictly limited to the embodiments set forth herein.

[0025] Figure 1is a plan view of a touch display device according to an embodiment of the present disclosure.

[0026] Figure 2 is a cross-sectional view taken along line I-I′ of the touch display device. Figure 1

[0027] Figure 3 is a view showing a touch driving system of a touch sensor.

[0028] Figure 4 is a view showing a touch sensor according to a first embodiment of the present disclosure.

[0029] Figure 5 is a view showing a case where a touch electrode having another shape is applied to the touch sensor of the first embodiment.

[0030] Figure 6 is a view showing a touch sensor according to a second embodiment of the present disclosure.

[0031] Figure 7 is a view showing a touch sensor according to a third embodiment of the present disclosure.

[0032] Figure 8 is a view showing an arrangement of multiplexer lines according to an embodiment of the present disclosure.

[0033] Figure 9 is a view showing an arrangement of a multiplexer according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] The features of the inventive concept and the method of implementing the features of the inventive concept can be more easily understood by referring to the following detailed description of the embodiments and the accompanying drawings. The described embodiments are provided as examples so that the present disclosure will be thorough and complete, and will fully convey the aspects and features of the present invention to those skilled in the art. Accordingly, processes, elements, and techniques that are not necessary for those skilled in the art to thoroughly understand the aspects and features of the present invention may not be described. Unless otherwise indicated, the same reference numerals denote the same elements throughout the drawings and the description thereof, and thus the description thereof will not be repeated. In addition, components not relevant to the description of the embodiments may not be shown for clarity. In the drawings, the relative sizes and thicknesses of elements, layers, regions, and components may be exaggerated for clarity and may be arbitrarily shown for better understanding and convenience of description, but the present disclosure is not limited thereto.

[0035] ​In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of various embodiments. It is evident, however, that the various embodiments may be practiced without these specific details or by means of one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring the various embodiments.

[0036] It should be understood that although the terms “first,” “second,” “third,” etc. may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, first component, first region, first layer, or first section described below may be termed a second element, second component, second region, second layer, or second section without departing from the spirit and scope of the present invention.

[0037] For ease of explanation, space relative terms such as “below,” “beneath,” “lower,” “under,” “above,” “upper,” etc. may be used herein to describe the relationship of one element or feature to another element(s) or feature(s) as shown in the figures. It should be understood that, in addition to the orientation depicted in the figures, the space relative terms are also intended to encompass different orientations of the device during use or operation. For example, if the device in the figures is flipped, an element described as “below” or “beneath” or “under” another element or feature will be oriented “above” the other element or feature. Thus, the exemplary terms “below” and “beneath” can encompass both an orientation of above and below. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the space relative descriptors used herein should be interpreted accordingly. Similarly, when a first component is described as being disposed “on” a second component, this means that the first component is disposed at the upper or lower side of the second component, and is not limited to its upper side based on the direction of gravity.

[0038] It should be understood that when an element, layer, region or component is referred to as being on, connected to or coupled to another element, layer, region or component, it can be directly on, connected to or coupled to the other element, layer, region or component, or there can be one or more intervening elements, layers, regions or components. However, "directly connected / directly coupled" means that a component is directly connected or coupled to another component without an intervening component. On the other hand, other expressions describing the relationship between components, such as "between", "immediately between" or "adjacent to" and "directly adjacent to" can be similarly interpreted. In addition, it should also be understood that when an element or layer is referred to as being between two elements or layers, it can be the only element or layer between the two elements or layers, or there can also be one or more intervening elements or layers.

[0039] For the purposes of the present disclosure, a statement such as "at least one of..." modifies the entire list of elements when it is after the list of elements and does not modify an individual element of the list. For example, "at least one of X, Y and Z" and "at least one selected from the group consisting of X, Y and Z" can be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y and Z, such as XYZ, XYY, YZ and ZZ. Throughout the specification, the same reference numerals denote the same elements. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the invention. Unless the context clearly dictates otherwise, as used herein, the singular forms "a" and "an" are also intended to include the plural forms. It should also be understood that the terms "comprises", "comprising", "have", "having", "includes" and "including" when used in this specification specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0041] When a particular embodiment can be implemented differently, a particular process order can be performed differently from the described order. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to the described order.

[0042] The various embodiments are described herein with reference to cross-sectional views that are schematic illustrations of embodiments and / or intermediate structures. As such, departures from the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are to be expected. In addition, for the purposes of describing embodiments of the concepts according to the present disclosure, the specific structural or functional descriptions disclosed herein are illustrative only. Accordingly, the embodiments disclosed herein should not be construed as limited to the particular shapes of the regions shown, but include shape departures, such as those caused by manufacturing. For example, an implantation region shown as rectangular will generally have rounded or curved features, and / or a gradient of implantation concentration at its edges without a binary change from the implantation region to the non-implantation region. Similarly, a buried region formed by implantation may result in some implantation in the region between the buried region and the surface through which the implantation is performed. Thus, the regions shown in the figures are schematic in nature, and their shapes are not intended to depict the actual shape of the regions of the device and are not intended to be limiting. Additionally, as will be appreciated by those skilled in the art, the described embodiments may be modified in a variety of different ways without departing from the spirit or scope of the present disclosure.

[0043] The electronic or electrical devices and / or any other related devices or components according to the embodiments of the invention described herein can be implemented using any suitable hardware, firmware (e.g., application specific integrated circuit), software, or a combination of software, firmware, and hardware. For example, the various components of these devices can be formed on one integrated circuit (IC) chip or on separate IC chips. Additionally, the various components of these devices can be implemented on a flexible printed circuit film, tape carrier package (TCP), printed circuit board (PCB), or can be formed on one substrate. Further, the various components of these devices can be processes or threads running on one or more processors in one or more computing devices that execute computer program instructions and interact with other system components to perform the various functions described herein. The computer program instructions are stored in a memory that can be implemented in a computing device, for example, using a standard storage device such as random access memory (RAM). The computer program instructions can also be stored in other non-transitory computer-readable media, such as a CD-ROM, flash drive, etc. Additionally, those skilled in the art should appreciate that, without departing from the spirit and scope of the embodiments of the present invention, the functions of various computing devices can be combined or integrated into a single computing device, or the functions of a particular computing device can be distributed across one or more other computing devices.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their context in the relevant art and / or this specification, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0045] Figure 1 is a plan view of a touch display device according to an embodiment of the present disclosure. Figure 2 is along Figure 1 A cross-sectional view of the touch display device taken along line I-I'.

[0046] Refer to Figure 1 and Figure 2 , the touch display device 10a includes a touch sensor and a display panel DP. The touch sensor may include touch electrodes TE1, TE2,..., touch lines TW1, TW2,... and a multiplexer (see Figure 4 ). The display panel DP may include a first path selection region PS1, a second path selection region PS2, a pad region PAD, a pixel region PXS, and a packaging layer TFE.

[0047] The pixel region PXS may include pixels. For example, each pixel may include an organic light emitting diode, a storage capacitor, and a transistor. In each pixel, under the control of a controller (e.g., a pixel driving IC, etc.), the on / off state of the transistor may be determined, a data voltage may be charged in the storage capacitor, and the organic light emitting diode may emit light with a gray scale corresponding to the charged data voltage. The touch display device 10a may display various images through the light emission combination of the pixels.

[0048] The packaging layer TFE may cover the top of the pixel region PXS to protect the pixels. For example, the packaging layer TFE may have a single-layer structure or a multi-layer structure configured with an organic layer, an inorganic layer, etc. The inorganic layer may protect the pixels by reducing or preventing moisture or oxygen from penetrating into the pixels, and the organic layer may reduce or prevent the generation or propagation of cracks.

[0049] The touch electrodes TE1, TE2,... may be positioned on the top of the pixel region PXS. As Figure 1 and Figure 2 shown, the touch electrodes TE1, TE2,... are formed on the packaging layer TFE. However, in another embodiment, the touch electrodes TE1, TE2,... may be formed under the packaging layer TFE. In yet another embodiment, the packaging layer TFE may be replaced with an upper substrate, and the touch electrodes TE1, TE2,... may be positioned on the top or bottom of the upper substrate.

[0050] The touch electrodes TE1, TE2, … do not necessarily have to be positioned on top of the pixel region PXS. When appropriate, the touch electrodes TE1, TE2, … can be positioned on the side surface or the rear surface of the touch display device 10a.

[0051] The touch electrodes TE1, TE2, … according to the present embodiment are respectively connected to corresponding touch lines TW1, TW2, …. The touch electrodes TE1, TE2, … can include a first touch electrode TE1 connected to a first path selection region PS1 through a first touch line TW1, and a second touch electrode TE2 is connected to a second path selection region PS2 through a second touch line TW2.

[0052] The first path selection region PS1 and the second path selection region PS2 can be positioned along a first direction y and a second direction -y with respect to the pixel region PXS, respectively. The first direction y and the second direction -y are opposite to each other.

[0053] Each of the first path selection region PS1 and the second path selection region PS2 includes a corresponding multiplexer, and the multiplexer connects a selected touch line among the plurality of touch lines connected thereto to a corresponding pad electrode. The pad electrodes are positioned in the pad region PAD.

[0054] Some of the pad electrodes in the pad region PAD can be connected to the pixels of the pixel region PXS. A controller (e.g., a pixel driving IC, a touch driving IC, or a combination thereof) can be directly bonded and connected to the pad electrodes. A flexible printed circuit board (FPCB) can be connected to the pad electrodes, and the controller can be connected to the FPCB.

[0055] Figure 3 is a view showing a touch driving system of a touch sensor.

[0056] In Figure 3 is shown a touch driving system for the first touch electrode TE1 connected to the first touch line TW1. The first touch line TW1 can be connected to a controller CTL via an intermediate circuit unit MCA including switches SW1, SW2, and / or SWr, capacitors Cs, and / or an amplifier AMP. The position of the intermediate circuit unit MCA can be changed according to the type of the product. As an example, the intermediate circuit unit MCA can be positioned in the first path selection region PS1 and can be integrally formed with the controller CTL. As another example, the intermediate circuit unit MCA can be positioned from a node N1 to a node IN1 in the first path selection region PS1, and the amplifier AMP can be integrally formed with the controller CTL. Figure 3 is an example for illustrating a touch driving system, and those skilled in the art can implement a similar touch driving system through another circuit.

[0057] Reference Figure 3 , the first touch electrode TE1 has a self-capacitor Cself with respect to a reference voltage (e.g., ground voltage). Here, the reference voltage can be the voltage that is also applied to the cathode electrode of the pixel region PXS. Alternatively, in some embodiments, a separate electrode for forming the self-capacitor Cself of the first touch electrode TE1 can be provided.

[0058] If the switch SW1 is turned on during the first period, the voltage source V1 is coupled to the first touch electrode TE1 through the node N1 and the first touch line TW1. Thus, the self-capacitor Cself is charged with the charge supplied by the voltage source V1. If a touch is input to the first touch electrode TE1 through a body part of the user (e.g., a finger), some of the charge is introduced into the touch capacitor formed between the first touch electrode TE1 and the body part of the user, and thus, the self-capacitor Cself can be charged with an amount of charge less than the conventional amount of charge.

[0059] Next, in the second period, the switch SW1 is turned off and the switch SW2 is turned on, so that the node N1 is coupled to the node N2. Thus, charge sharing occurs between the self-capacitor Cself and the capacitor Cs, and the capacitor Cs is charged. At this time, the amplifier AMP operates as a comparator. The amplifier AMP can compare the voltage of the voltage source V2 and the voltage of the capacitor Cs, and can output the comparison result to the node OUT1. As an example, when no user touch occurs, the voltage of the capacitor Cs is greater than the voltage of the voltage source V2, so that a positive voltage signal can be output to the node OUT1. As another example, when a user touch occurs, the voltage of the capacitor Cs is less than the voltage of the voltage source V2, so that a negative voltage signal can be output to the node OUT1.

[0060] When a positive voltage signal is received, the controller CTL can determine that no user touch has occurred. When a negative voltage signal is received, the controller CTL can determine that a user touch has occurred.

[0061] Next, in the third period, since the switch SWr is turned on, the charge stored in the capacitor Cs is discharged, so that the capacitor Cs can be initialized.

[0062] In addition to the first touch electrode TE1, Figure 3 the description can also be applied to all touch electrodes of the present embodiment that are coupled to their corresponding touch lines.

[0063] Figure 4 is a view showing a touch sensor according to a first embodiment of the present disclosure.

[0064] Reference Figure 4, the touch sensor according to the first embodiment of the present disclosure includes: first touch electrodes TE1a, TE1b, …, TE1c, and TE1d; second touch electrodes TE2a, TE2b, …, TE2c, and TE2d; a first multiplexer MUX1; and a second multiplexer MUX2. The touch sensor of the first embodiment may also extend in the row direction x. In this case, the touch sensor may further include: third touch electrodes TE3a, TE3b, …, TE3c, and TE3d; fourth touch electrodes TE4a, TE4b, …, TE4c, and TE4d; a third multiplexer MUX3; and a fourth multiplexer MUX4. Hereinafter, to avoid redundancy, the first touch electrodes TE1a to TE1d, the second touch electrodes TE2a to TE2d, the first multiplexer MUX1, and the second multiplexer MUX2 will be described, and their descriptions can be similarly applied to the third touch electrodes TE3a to TE3d, the fourth touch electrodes TE4a to TE4d, the third multiplexer MUX3, and the fourth multiplexer MUX4.

[0065] Figure 4 The touch electrodes shown in may be arranged in an approximate matrix form. For example, the touch electrodes TE2d, TE1a, …, TE4d, and TE3a may be located on the same row, and the touch electrodes TE2d, TE2c, …, TE2b, and TE2a may be located on the same column. Therefore, hereinafter, the row direction refers to the x or -x direction, and the column direction refers to the y or -y direction.

[0066] The first touch electrodes TE1a to TE1d are respectively connected to corresponding first touch lines TW1a, TW1b, …, TW1c, and TW1d and are arranged in the first column.

[0067] The second touch electrodes TE2a to TE2d are respectively connected to corresponding second touch lines TW2a, TW2b, …, TW2c, and TW2d, and are arranged in a second column adjacent to the first column in the row direction -x.

[0068] The first multiplexer MUX1 is connected to the first touch lines TW1a to TW1d. The first multiplexer MUX1 connects at least one of the first touch lines TW1a to TW1d to the first multiplexer line MW1 in response to a control signal. The first multiplexer line MW1 is connected to the controller CTL through a pad electrode.

[0069] The second multiplexer MUX2 is connected to the second touch lines TW2a to TW2d. The second multiplexer MUX2 connects at least one of the second touch lines TW2a to TW2d to the second multiplexer line MW2 in response to a control signal. The second multiplexer line MW2 is connected to the controller CTL through a pad electrode.

[0070] The shape of the first column configured with the first touch electrodes TE1a to TE1d may be a wedge shape whose width narrows overall along the first direction y. In addition, the shape of the second column configured with the second touch electrodes TE2a to TE2d may be a wedge shape whose width narrows overall or gradually along the second direction -y. The expression "right triangle shape" may be used instead of the expression "wedge shape". The first touch electrodes TE1a to TE1d and the second touch electrodes TE2a to TE2d may be arranged in a form where they are joined to each other.

[0071] For example, the first touch electrodes TE1a to TE1d have areas that become smaller as they become closer to the first multiplexer MUX1 along the first direction y. The first direction y may be the column direction. Thus, the first multiplexer MUX1 is positioned closest to the first touch electrode TE1a having the smallest area and farthest from the first touch electrode TE1d having the largest area. Thus, the first multiplexer MUX1 may be positioned at the end of the first direction y on the first column configured with the first touch electrodes TE1a to TE1d.

[0072] The second touch electrodes TE2a to TE2d have areas that become smaller as they become closer to the second multiplexer MUX2 along the second direction -y. The second direction -y may be the column direction. The first direction y and the second direction -y may be opposite to each other. Thus, the second multiplexer MUX2 is positioned closest to the second touch electrode TE2a having the smallest area and farthest from the second touch electrode TE2d having the largest area. Thus, the second multiplexer MUX2 may be positioned at the end of the second direction -y on the second column configured with the second touch electrodes TE2a to TE2d. Thus, the first multiplexer MUX1 and the second multiplexer MUX2 are alternately set in units of columns, and the first multiplexer MUX1 and the second multiplexer MUX2 are set in different directions with respect to the touch electrodes TE1a to TE1d and TE2a to TE2d. Thus, over-concentration or aggregation of the touch lines TW1a to TW2d is reduced or prevented.

[0073] In addition, the first touch electrode TE1a having the smallest area among the first touch electrodes TE1a to TE1d may be positioned in the same row as the second touch electrode TE2d having the largest area among the second touch electrodes TE2a to TE2d. In Figure 4 an embodiment, the first touch electrode TE1a and the second touch electrode TE2d are positioned in the same first row. The first row is adjacent to the first multiplexer MUX1.

[0074] In addition, the second touch electrode TE2a having the smallest area among the second touch electrodes TE2a to TE2d may be positioned on the same row as the first touch electrode TE1d having the largest area among the first touch electrodes TE1a to TE1d. In Figure 4 the embodiment of, the second touch electrode TE2a and the first touch electrode TE1d are positioned on the same last row. The last row is adjacent to the second multiplexer MUX2.

[0075] In addition, each of the first touch electrodes TE1a to TE1d and the second touch electrodes TE2a to TE2d may have a rectangular shape including a first side and a second side parallel to the first side. For example, in Figure 4 it, the first side may be the left side and the second side may be the right side.

[0076] At this time, the first touch electrodes TE1a to TE1d may be aligned such that their first sides are positioned on a first straight line SE1 extending in the column direction, and the second touch electrodes TE2a to TE2d may be aligned such that their second sides are positioned on a second straight line SE2 extending in the column direction. At this time, the first straight line SE1 and the second straight line SE2 may be parallel to each other.

[0077] In addition, the number of touch lines positioned between the first touch electrode and the second touch electrode on the corresponding row may be the same. At this time, the touch lines may represent at least some of the first touch lines TW1a to TW1d and the second touch lines TW2a to TW2d. For example, when assuming that four touch electrodes are configured in each column, on the first row, three touch lines TW1b, TW1c, and TW1d may be positioned between the first touch electrode TE1a and the second touch electrode TE2d. Similarly, on the second row, three touch lines TW1c, TW1d, and TW2d may be positioned between the first touch electrode TE1b and the second touch electrode TE2c, on the third row, three touch lines TW1d, TW2d, and TW2c may be positioned between the first touch electrode TE1c and the second touch electrode TE2b, and on the fourth row, three touch lines TW2d, TW2c, and TW2b may be positioned between the first touch electrode TE1d and the second touch electrode TE2a.

[0078] In addition, the sum of the areas of the first touch electrode and the second touch electrode on the corresponding row may be the same. For example, the sum of the areas of the first touch electrode TE1a and the second touch electrode TE2d on the first row, the sum of the areas of the first touch electrode TE1b and the second touch electrode TE2c on the second row, the sum of the areas of the first touch electrode TE1c and the second touch electrode TE2b on the third row, and the sum of the areas of the first touch electrode TE1d and the second touch electrode TE2a on the fourth row may be the same. More specifically, when the touch electrodes have the same height dy, the sum of the widths dx of the first touch electrode and the second touch electrode on the corresponding row may be the same.

[0079] According to the above-described embodiment, the first touch electrodes TE1a to TE1d in the first column and the second touch electrodes TE2a to TE2d in the second column are integrally or jointly formed in a rectangular shape when joined to each other or when compensating for each other's shapes in a wedge shape extending in opposite directions from each other, which is spatially efficient. In other words, if necessary, the touch sensor may include additional touch electrode columns (… and TE3a to TE4d) that extend further in the row direction.

[0080] In addition, according to the above-described embodiment, the sum of the areas of the touch electrodes and the number of touch lines on the corresponding row are the same, and thus the reflectance on the corresponding row is the same. Therefore, although the touch electrodes are positioned on the pixel region PXS, no deterioration in visibility occurs due to differences in reflectance.

[0081] Hereinafter, Figure 4 other components will be described, but overlapping descriptions thereof will be omitted.

[0082] The third touch electrodes TE3a to TE3d are coupled to the corresponding third touch lines TW3a to TW3d one-to-one, and may be arranged on a third column positioned adjacent to the first column in the row direction x (for example, where the fourth column is between the first column and the third column). The fourth touch electrodes TE4a to TE4d are coupled to the corresponding fourth touch lines TW4a to TW4d one-to-one, and may be arranged on a fourth column positioned adjacent to the third column in the -x row direction.

[0083] The third multiplexer MUX3 is coupled to the third touch lines TW3a to TW3d, and may be positioned in the first path selection region PS1. The fourth multiplexer MUX4 is coupled to the fourth touch lines TW4a to TW4d, and may be positioned in the second path selection region PS2.

[0084] The first multiplexer line MW1 may connect the first multiplexer MUX1 to some of the pad electrodes, the second multiplexer line MW2 may connect the second multiplexer MUX2 to some of the pad electrodes, the third multiplexer line MW3 may connect the third multiplexer MUX3 to some of the pad electrodes, and the fourth multiplexer line MW4 may connect the fourth multiplexer MUX4 to some of the pad electrodes.

[0085] Although Figure 4 Although not shown in the figure, when the number of multiplexers MUX1, MUX2, ..., MUX3, and MUX4 increases, the touch sensor may further include a back-end multiplexer. For example, multiplexer lines MW1, MW2, ..., MW3, and MW4 may be connected to the back-end multiplexer, and the back-end multiplexer may connect at least one of the multiplexer lines MW1, MW2, ..., MW3, and MW4 to the controller CTL through the pad electrode in response to the control signal.

[0086] Figure 5 is a view showing an embodiment in which a touch electrode having another shape is applied to the touch sensor of the first embodiment.

[0087] exist Figure 5 In the embodiment, a touch electrode having a diamond shape is applied to replace a touch electrode having a rectangular shape, and only a portion of the replacement is shown. Figure 4 The touch electrode having a diamond shape can also be applied to the area DA1 of the area A1. Figure 5 The expression "diamond shape" may be used instead of the expression "rhombus shape".

[0088] exist Figure 5 In an embodiment, each of the first touch electrodes DTE1a, DTE1b, ..., DTE1c, and DTE1d and the second touch electrodes DTE2a, DTE2b, ..., DTE2c, and DTE2d may have a rhombus shape including a first vertex and a second vertex. Figure 5 In the embodiment of the present invention, the first vertex may be a right vertex of the touch electrode, and the second vertex may be a left vertex of the touch electrode.

[0089] The first touch electrodes DTE1a to DTE1d may be aligned so that their first vertices are positioned on a first straight line DSE1 extending in the column direction, and the second touch electrodes DTE2a to DTE2d may be aligned so that their second vertices are positioned on a second straight line DSE2 extending in the column direction. At this time, the first straight line DSE1 and the second straight line DSE2 may be parallel to each other.

[0090] The number of touch lines positioned between the first touch electrode and the second touch electrode on the corresponding row may be the same. At this time, the touch lines may represent at least some of the first touch lines DTW1a, DTW1b, …, DTW1c, and DTW1d and the second touch lines DTW2a, DTW2b, …, DTW2c, and DTW2d.

[0091] Each of the first touch lines DTW1a to DTW1d may have a shape that extends (e.g., obliquely extends) from one vertex of the corresponding first touch electrode along the hypotenuse and bends in the first direction y. At this time, the one vertex of the mentioned first touch electrode may be the second vertex of the first touch electrode.

[0092] Each of the second touch lines DTW2a to DTW2d may have a shape that extends (e.g., obliquely extends) from one vertex of the corresponding second touch electrode along the hypotenuse and bends in the second direction -y. At this time, the one vertex of the second touch electrode may be the first vertex of the second touch electrode.

[0093] In addition, the touch electrodes may have the same height dy′, and the sum of the widths dx′ of the touch electrodes on the corresponding row may be the same.

[0094] Figure 5 Embodiments showing touch electrodes with modified shapes can be applied to Figure 4 and may exhibit effects that are the same as or similar to those of Figure 4 the embodiments.

[0095] Figure 6 is a view showing a touch sensor according to a second embodiment of the present disclosure.

[0096] Referring to Figure 6 The first touch electrodes TE1a′ to TE1d′ are coupled to the corresponding first touch lines TW1a′ to TW1d′ one by one and are arranged on the first column and the second column adjacent to the first column in the row direction x. For example, the first touch electrodes TE1a′ to TE1b′ are arranged on the first column, and the first touch electrodes TE1c′ to TE1d′ are arranged on the second column.

[0097] The second touch electrodes TE2a′ to TE2d′ are coupled to the corresponding second touch lines TW2a′ to TW2d′ one by one and are provided on the first column and the second column. For example, the second touch electrodes TE2a′ to TE2b′ are arranged on the first column, and the second touch electrodes TE2c′ to TE2d′ are arranged on the second column.

[0098] The first multiplexer MUX1′ is connected to the first touch lines TW1a′ to TW1b′, and the first touch lines TW1a′ to TW1b′ are connected to the first touch electrodes TE1a′ to TE1b′ arranged in the first column. The second multiplexer MUX2′ is connected to the first touch lines TW1c′ to TW1d′, and the first touch lines TW1c′ to TW1d′ are connected to the first touch electrodes TE1c′ to TE1d′ arranged in the second column. The first multiplexer MUX1′ and the second multiplexer MUX2′ can be positioned in the first path selection area PS1′.

[0099] The third multiplexer MUX3′ is connected to the second touch lines TW2a′ to TW2b′, and the second touch lines TW2a′ to TW2b′ are connected to the second touch electrodes TE2a′ to TE2b′ arranged in the first column. The fourth multiplexer MUX4′ is connected to the second touch lines TW2c′ to TW2d′, and the second touch lines TW2c′ to TW2d′ are connected to the second touch electrodes TE2c′ to TE2d′ arranged in the second column. The third multiplexer MUX3′ and the fourth multiplexer MUX4′ can be positioned in the second path selection area PS2′.

[0100] In this embodiment, the number of the first touch lines TW1a′ to TW1b′ connected to the first multiplexer MUX1′, the number of the first touch lines TW1c′ to TW1d′ connected to the second multiplexer MUX2′, the number of the second touch lines TW2a′ to TW2b′ connected to the third multiplexer MUX3′, and the number of the second touch lines TW2c′ to TW2d′ connected to the fourth multiplexer MUX4′ are the same.

[0101] The first touch electrodes TE1a′ to TE1d′ have areas that become smaller as they become closer to the first multiplexer MUX1′ or the second multiplexer MUX2′ along the first direction y.

[0102] The second touch electrodes TE2a′ to TE2d′ have areas that become smaller as they become closer to the third multiplexer MUX3′ or the fourth multiplexer MUX4′ along the second direction -y. The first direction y and the second direction -y are opposite to each other.

[0103] Each of the first touch electrodes TE1a′ to TE1d′ and the second touch electrodes TE2a′ to TE2d′ may have a rectangular shape including a first side and a second side parallel to the first side. The first touch electrodes TE1a′ to TE1b′ and the second touch electrodes TE2a′ to TE2b′ arranged on the first column may be arranged such that their first sides are positioned on a first straight line SE1′ extending in the column direction. The first touch electrodes TE1c′ to TE1d′ and the second touch electrodes TE2c′ to TE2d′ arranged on the second column may be aligned such that their second sides are positioned on a second straight line SE2′ extending in the column direction. The first straight line SE1′ and the second straight line SE2′ may be parallel to each other.

[0104] According to Figure 6 The touch sensor according to the embodiment of may also extend in the row direction x, and may further include multiplexers …, MUX(n - 3)′, MUX(n - 2)′, MUX(n - 1)′, and MUXn′, and touch electrodes. Their overlapping description will be omitted.

[0105] Figure 7 is a view showing a touch sensor according to a third embodiment of the present disclosure.

[0106] Refer to Figure 7 , the first touch electrodes TE1a″ to TE1d″ are coupled to the corresponding first touch lines TW1a″ to TW1d″ one by one, and are arranged on the first column and on the second column adjacent to the first column in the row direction x. For example, the first touch electrode TE1a″ is provided on the first column, and the first touch electrodes TE1b″, TE1c″, and TE1d″ are provided on the second column.

[0107] The second touch electrodes TE2a″ to TE2d″ are coupled to the corresponding second touch lines TW2a″ to TW2d″ one by one, and are arranged on the first column and the second column. For example, the second touch electrodes TE2a″, TE2b″, and TE2c″ are provided on the first column, and the second touch electrode TE2d″ is provided on the second column.

[0108] The first multiplexer MUX1″ is coupled to the first touch line TW1a″, and the first touch line TW1a″ is coupled to the first touch electrode TE1a″ arranged on the first column. The second multiplexer MUX2″ is coupled to the first touch lines TW1b″, TW1c″, and TW1d″, and the first touch lines TW1b″, TW1c″, and TW1d″ are coupled to the first touch electrodes TE1b″, TE1c″, and TE1d″ arranged on the second column. The first multiplexer MUX1″ and the second multiplexer MUX2″ may be positioned in the first path selection region PS1″.

[0109] The third multiplexer MUX3″ is connected to the second touch lines TW2a″, TW2b″, and TW2c″, and the second touch lines TW2a″, TW2b″, and TW2c″ are connected to the second touch electrodes TE2a″, TE2b″, and TE2c″ arranged on the first column. The fourth multiplexer MUX4″ is connected to the second touch line TW2d″, and the second touch line TW2d″ is connected to the second touch electrode TE2d″ arranged on the second column. The third multiplexer MUX3″ and the fourth multiplexer MUX4″ can be positioned in the second path selection region PS2″.

[0110] The first touch electrodes TE1a″ to TE1d″ have areas that become smaller as they become closer to the first multiplexer MUX1″ or the second multiplexer MUX2″ along the first direction y.

[0111] The second touch electrodes TE2a″ to TE2d″ have areas that become smaller as they become closer to the third multiplexer MUX3″ or the fourth multiplexer MUX4″ along the second direction -y. At this time, the first direction y and the second direction -y are opposite to each other.

[0112] Each of the first touch electrodes TE1a″ to TE1d″ and the second touch electrodes TE2a″ to TE2d″ can have a rectangular shape including a first side and a second side parallel to the first side. The first touch electrode TE1a″ arranged on the first column and the second touch electrodes TE2a″, TE2b″, and TE2c″ can be aligned such that their first sides are positioned on a first straight line SE1″ extending in the column direction. The first touch electrodes TE1b″, TE1c″, and TE1d″ arranged on the second column and the second touch electrode TE2d″ can be aligned such that their second sides are positioned on a second straight line SE2″ extending in the column direction. The first straight line SE1″ and the second straight line SE2″ can be parallel to each other.

[0113] Different from Figure 6 in the second embodiment shown in Figure 7 In the third embodiment shown in

[0114] Therefore, compared with the middle area MA′ of the touch sensor according to Figure 6 the second embodiment shown in Figure 7The reflectance distribution of the touch electrodes in the middle region MA″ of the touch sensor of the third embodiment shown can be improved. Accordingly, visibility can be enhanced.

[0115] Figure 8 is a view showing an arrangement of multiplexer lines according to an embodiment of the present disclosure.

[0116] Figure 8 The touch display device 10b includes multiplexer lines MW1l and MW2l extending adjacent to one side of the pixel region PXS and multiplexer lines MW1r and MW2r extending adjacent to the other side of the pixel region PXS. In Figure 8 terms of, one side of the pixel region PXS may be the left side, and the other side of the pixel region PXS may be the right side.

[0117] Each of the multiplexer lines MW1l and MW1r may be configured with i multiplexer lines extending from the first path selection region PS1. Here, i is a natural number.

[0118] Each of the multiplexer lines MW2l and MW2r may be configured with j multiplexer lines extending from the second path selection region PS2. Here, j is a natural number.

[0119] In Figure 4 the first embodiment shown, the first multiplexer line MW1 may correspond to the multiplexer line MW1l, and the third multiplexer line MW3 may correspond to the multiplexer line MW1r. In addition, the second multiplexer line MW2 may correspond to the multiplexer line MW2l, and the fourth multiplexer line MW4 may correspond to the multiplexer line MW2r.

[0120] In Figure 6 the second embodiment shown, the first multiplexer line MW1′ and the second multiplexer line MW2′ may correspond to the multiplexer line MW1l, and the (n - 3)′ multiplexer line MW(n - 3)′ and the (n - 2)′ multiplexer line MW(n - 2)′ may correspond to the multiplexer line MW1r. In addition, the third multiplexer line MW3′ and the fourth multiplexer line MW4′ may correspond to the multiplexer line MW2l, and the (n - 1)′ multiplexer line MW(n - 1)′ and the n′ multiplexer line MWn′ may correspond to the multiplexer line MW2r.

[0121] In Figure 7In the third embodiment shown, the first multiplexer line MW1″ and the second multiplexer line MW2″ may correspond to the multiplexer line MW1l, and the (n - 3)″ multiplexer line MW(n - 3)″ and the (n - 2)″ multiplexer line MW(n - 2)″ may correspond to the multiplexer line MW1r. In addition, the third multiplexer line MW3″ and the fourth multiplexer line MW4″ may correspond to the multiplexer line MW2l, and the (n - 1)″ multiplexer line MW(n - 1)″ and the n″ multiplexer line MWn″ may correspond to the multiplexer line MW2r.

[0122] According to this embodiment, the positions of the multiplexer lines MW1l, MW2l, MW1r, and MW2r are effectively distributed in the display panel DP, so that the area required for the lines can be reduced. In addition, it can help the touch display device 10b to achieve a narrow border.

[0123] Figure 9 is a view showing the arrangement of multiplexer lines according to another embodiment of the present disclosure.

[0124] Figure 9 The touch display device 10c includes multiplexer lines MW1c and MW2c extending adjacent to one side of the pixel region PXS. In Figure 8 this regard, one side of the pixel region PXS may be the left side.

[0125] In Figure 9 this embodiment, if necessary, the multiplexer lines MW1c and MW2c may be centrally arranged at one side of the display panel DP.

[0126] According to the present disclosure, the touch sensor and the touch display device including the touch sensor have spatial efficiency and can improve visibility.

[0127] Embodiments have been disclosed herein, and although specific terms have been employed, they have been used and interpreted in a general and descriptive sense only, and not for purposes of limitation. In some examples, as will be apparent to those of ordinary skill in the art at the time of filing of this application, unless otherwise specifically stated, features, characteristics, and / or elements described in connection with a particular embodiment may be used alone or may be combined with features, characteristics, and / or elements described in connection with other embodiments. Accordingly, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the present disclosure as set forth in the appended claims and including functional equivalents of the appended claims.

Claims

1. A touch sensor, comprising: First touch electrodes respectively connected to first touch lines, the first touch electrodes being arranged in a first column; Second touch electrodes respectively connected to second touch lines, the second touch electrodes being arranged in a second column adjacent to the first column in a row direction; A first multiplexer to which the first touch lines are connected; And A second multiplexer to which the second touch lines are connected, wherein the first touch electrodes have respective areas that become smaller as they become closer to the first multiplexer along a first direction, wherein the second touch electrodes have respective areas that become smaller as they become closer to the second multiplexer along a second direction, wherein the first direction and the second direction are opposite to each other, wherein each of the first touch electrodes and the second touch electrodes includes a first end and a second end opposite to the first end in the row direction, wherein the first touch electrodes are aligned such that their first ends are located on a first straight line extending in a column direction, and their second ends are at different distances from the first straight line in the row direction, wherein the second touch electrodes are aligned such that their second ends are located on a second straight line extending in the column direction, and their first ends are at different distances from the second straight line in the row direction, wherein the second ends of the first touch electrodes and the first ends of the second touch electrodes are between the first straight line and the second straight line, and wherein the first touch lines and the second touch lines are between the first straight line and the second straight line.

2. The touch sensor according to claim 1, Among them, a first touch electrode having the smallest area among the first touch electrodes and a second touch electrode having the largest area among the second touch electrodes are located in the same row, and wherein a second touch electrode having the smallest area among the second touch electrodes and a first touch electrode having the largest area among the first touch electrodes are located in the same row.

3. The touch sensor according to claim 2, wherein, Each of the first touch electrodes and the second touch electrodes has a rectangular shape including a first side as the first end and a second side parallel to the first side as the second end, wherein the first touch electrodes are aligned such that their first sides are located on a first straight line extending in a column direction, wherein the second touch electrodes are aligned such that their second sides are located on a second straight line extending in the column direction, and wherein the first straight line and the second straight line are parallel to each other.

4. The touch sensor according to claim 3, Among them, for all of the rows, the number of touch lines between the first touch electrodes and the second touch electrodes is the same on each row in each of the rows, and wherein the touch lines include at least some of the first touch lines and the second touch lines.

5. The touch sensor according to claim 4, wherein, For all of the rows, the sum of the areas of the first touch electrodes and the second touch electrodes is the same on each row in each of the rows.

6. The touch sensor according to claim 2, wherein, Each of the first touch electrode and the second touch electrode has a rhombus shape including a first vertex as the first end and a second vertex as the second end, wherein the first touch electrodes are aligned such that their first vertices are positioned on a first straight line extending in the column direction, wherein the second touch electrodes are aligned such that their second vertices are positioned on a second straight line extending in the column direction, and wherein the first straight line and the second straight line are parallel to each other.

7. The touch sensor according to claim 6, Among them, For all of the rows, the number of touch lines between the first touch electrode and the second touch electrode on each row in each row is the same, wherein the touch lines include at least some of the first touch lines and the second touch lines.

8. The touch sensor according to claim 6, Among them, Each of the first touch lines has a shape that extends obliquely from one vertex of the corresponding first touch electrode and bends in the first direction, and wherein each of the second touch lines has a shape that extends obliquely from one vertex of the corresponding second touch electrode and bends in the second direction.

9. A touch display device, comprising: A touch sensor; And A display panel, combined with the touch sensor, wherein the touch sensor includes: A first touch electrode, respectively coupled to a first touch line, the first touch electrode being arranged on a first column; A second touch electrode, respectively coupled to a second touch line, the second touch electrode being arranged on a second column adjacent to the first column in the row direction; A first multiplexer, the first touch line being coupled to the first multiplexer; and A second multiplexer, the second touch line being coupled to the second multiplexer, wherein the first touch electrodes have respective areas that gradually become smaller as they approach the first multiplexer along a first direction, and the second touch electrodes have respective areas that gradually become smaller as they approach the second multiplexer along a second direction, wherein the first direction and the second direction are opposite to each other, wherein each of the first touch electrode and the second touch electrode includes a first end and a second end opposite to the first end in the row direction, wherein the first touch electrodes are aligned such that their first ends are positioned on a first straight line extending in the column direction, and their second ends are at different distances from the first straight line in the row direction, wherein the second touch electrodes are aligned such that their second ends are positioned on a second straight line extending in the column direction, and their first ends are at different distances from the second straight line in the row direction, wherein the second ends of the first touch electrodes and the first ends of the second touch electrodes are between the first straight line and the second straight line, and wherein the first touch lines and the second touch lines are between the first straight line and the second straight line, and wherein the display panel includes: A pixel region including pixels, the pixel region being located on the bottoms of the first touch electrode and the second touch electrode; A pad region including pad electrodes; A first path selection region in which the first multiplexer is positioned; and A second path selection region in which the second multiplexer is positioned.

10. The touch display device according to claim 9, Among them, wherein the touch sensor further includes: Third touch electrodes respectively connected to third touch lines, the third touch electrodes being arranged on a third column adjacent to the second column in the row direction; Fourth touch electrodes respectively connected to fourth touch lines, the fourth touch electrodes being arranged on a fourth column adjacent to the third column in the row direction; A third multiplexer connected to the third touch lines, the third multiplexer being positioned in the first path selection region; and A fourth multiplexer connected to the fourth touch lines, the fourth multiplexer being positioned in the second path selection region, and wherein the touch display device further includes: A first multiplexer line connecting the first multiplexer to some of the pad electrodes; A second multiplexer line connecting the second multiplexer to some of the pad electrodes; A third multiplexer line connecting the third multiplexer to some of the pad electrodes; and A fourth multiplexer line connecting the fourth multiplexer to some of the pad electrodes.

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