Touch display device

Abstract

Touch display device. Embodiments of the present disclosure relate to a touch display device in which at least a portion of different touch lines can be disposed to overlap each other since a plurality of first line members disposed on a first sensor layer and a plurality of second line members disposed on a second sensor layer are alternately made into touch lines, and thus, a plurality of touch lines can be disposed while minimizing a reduction in the aperture ratio or transmittance of a sub-pixel due to the arrangement of the touch lines. Accordingly, it is possible to improve touch sensitivity by further disposing a touch electrode, or it is possible to easily implement a touch display device having a large area requiring many channels by further disposing a touch line.

Description

TECHNICAL FIELD

[0001] Embodiments of the disclosure relate to a touch display device. BACKGROUND

[0002] Development of an information society has led to an increased demand for display devices for displaying images and various types of display devices, such as liquid crystal display devices, organic light emitting display devices, and the like, for use.

[0003] A display device can recognize a touch on a display panel by a user's finger or a pen to provide various functions to the user. The display device can perform an input process for driving the display device based on the recognized touch.

[0004] A display device can include a plurality of touch electrodes embedded in a display panel or disposed on the display panel. The display device can include a plurality of touch lines that provide a touch driving signal to the touch electrodes.

[0005] The plurality of touch lines can be disposed on a non-display area of the display panel and electrically connected to the touch electrodes. Alternatively, the plurality of touch lines can be disposed on a display area of the display panel and electrically connected to the touch electrodes.

[0006] Accordingly, there is a problem that the aperture ratio or the transmittance of a sub-pixel can be reduced due to the plurality of touch electrodes and the plurality of touch lines disposed on the display area of the display panel. SUMMARY

[0007] Embodiments of the disclosure can provide a method that is capable of minimizing reduction in the aperture ratio or the transmittance of a sub-pixel disposed in a display panel while disposing a touch electrode and a touch line.

[0008] Embodiments of the disclosure can provide a method that is capable of improving touch sensitivity by increasing an area of a touch electrode disposed in a display panel, or implementing a touch display device having a large area by increasing the number of touch lines.

[0009] In an aspect, embodiments of the disclosure can provide a touch display device including a plurality of touch electrodes disposed in a display panel, and a plurality of touch lines electrically connected to each of the plurality of touch electrodes.

[0010] Each of the plurality of touch electrodes can include a plurality of first electrode parts disposed on a first sensor layer, and a plurality of second electrode parts disposed on a second sensor layer different from the first sensor layer and electrically connected to at least one of the plurality of first electrode parts.

[0011] Each of the plurality of touch lines can include a plurality of first line parts disposed on the first sensor layer, and a plurality of second line parts disposed on the second sensor layer, a portion of the plurality of second line parts overlapping at least one of the plurality of first electrode parts, and the plurality of second line parts electrically connected between two adjacent ones of the plurality of first line parts.

[0012] The plurality of touch lines can include a first touch line and a second touch line. At least a portion of the first line parts of the first touch line can overlap the second line parts of the second touch line. At least a portion of the second line parts of the first touch line can overlap the first line parts of the second touch line.

[0013] At least one of the plurality of first electrode parts is located between a first point at which the first line parts of the first touch line and the second line parts of the first touch line are connected to each other and a second point at which the first line parts of the second touch line and the second line parts of the second touch line are connected to each other.

[0014] In another aspect, embodiments of the present disclosure can provide a touch display apparatus including a plurality of touch electrodes, and a plurality of touch lines electrically connected to each of the plurality of touch electrodes, wherein each of the plurality of touch lines includes a plurality of first line parts disposed on a first sensor layer, and a plurality of second line parts disposed on a second sensor layer different from the first sensor layer and electrically connected between two adjacent ones of the plurality of first line parts.

[0015] A length of each of the plurality of second line parts included in each of the plurality of touch lines can be greater than a length of each of the plurality of first line parts included in each of the plurality of touch lines.

[0016] According to various embodiments of the present disclosure, since the touch lines disposed in the display panel include the plurality of first line parts disposed on the first sensor layer and the plurality of second line parts disposed on the second sensor layer, at least a portion of different touch lines can be disposed to overlap, and thus a decrease in the aperture ratio and the transmittance of sub-pixels due to the arrangement of the touch lines can be minimized.

[0017] According to various embodiments of the present disclosure, since at least a portion of different touch lines can be disposed to overlap, the touch sensitivity can be improved by further disposing the touch electrodes, or a touch display apparatus having a large area requiring many channels can be easily implemented by further disposing the touch lines. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 FIG. 1 is a diagram schematically showing components included in a touch display device according to an embodiment of the present disclosure.

[0020] Figure 2 FIG. 2 is a diagram schematically showing an example of a planar structure in which a touch electrode and a touch line are disposed in a touch display device according to an embodiment of the present disclosure.

[0021] Figure 3 FIG. 3 is a diagram showing an example of a cross-sectional structure taken along line A-A' in FIG. 2. Figure 2

[0022] Figure 4 FIG. 4 is a diagram showing another example of a planar structure in which a touch electrode and a touch line are disposed in a touch display device according to an embodiment of the present disclosure.

[0023] Figure 5 FIG. 5 is a diagram showing an example of a cross-sectional structure taken along line B-B' in FIG. 4. Figure 4

[0024] Figure 6 FIG. 6 is a diagram showing other examples of a planar structure in which a touch electrode and a touch line are disposed in a touch display device according to an embodiment of the present disclosure. Figure 7

[0025] Figure 8A FIG. 7 is a diagram showing an example of a structure in which a touch line is connected to a touch electrode in a touch display device according to an embodiment of the present disclosure. Figure 8B

[0026] Figure 9A Figure 9B Figure 9C Figure 9D FIG. 8 is a diagram showing an example of a structure in which a touch line and a link line are disposed in a touch display device according to an embodiment of the present disclosure.

[0027] Figure 10 FIG. 9 is a diagram showing an example of a structure of a link line disposed in a touch display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] ​​​​​​​In the following description of examples or embodiments of the disclosure, reference will be made to the accompanying drawings, which are shown by way of illustration of an embodiment or a specific example that can be implemented by way of description, and in which the same or similar components and signs can be used to represent the same or similar components even if shown in different drawings from each other. Also, in the following description of examples or embodiments of the disclosure, a detailed description of well-known functions and components incorporated herein will be omitted when it is determined that the subject matter of some embodiments of the disclosure can become unclear. Unless the term is used together with the term "only", the terms such as "include", "have", "contain", "comprise", and "consist of" used herein are generally intended to allow addition of other components. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0029] Terms such as "first", "second", "A", "B", "(A)", or "(B)" can be used herein to describe elements of the disclosure. Each of these terms is not used to define the nature, order, sequence, or number of elements, etc., but is used only to distinguish the corresponding element from other elements.

[0030] When referring to a first element "connected or coupled to" a second element, "in contact or overlapping with" a second element, etc., it should be understood that the first element can not only be "directly connected or coupled to" the second element or "in direct contact or overlapping with" the second element, and a third element can also be "interposed" between the first element and the second element, or the first element and the second element can be "connected or coupled" to each other, "in contact or overlapping" with each other, etc. via a fourth element. Here, the second element can be included in at least one of two or more elements "connected or coupled" to each other, "in contact or overlapping" with each other, etc.

[0031] When using time-related terms such as "after", "subsequently", "next", "before", etc. to describe the process or operation of an element or configuration or the flow or step in an operation, process, manufacturing method, unless used together with the term "directly" or "immediately", these terms can be used to describe non-continuous or non-sequential processes or operations.

[0032] In addition, when referring to any dimension, relative size, etc., even if the relevant description is not specified, it should be considered that the numerical value or corresponding information of the element or feature (e.g., level, range, etc.) includes a tolerance or error range that can be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). In addition, the term "may" fully includes all the meanings of the term "can".

[0033] Figure 1 FIG. 1 is a diagram schematically illustrating components included in a touch display device 100 according to an embodiment of the disclosure.

[0034] Referring to Figure 1 The touch display device 100 according to the embodiment of the disclosure can include a display panel 110 including a display area AA provided with a plurality of sub-pixels SP and a non-display area NA located outside the display area AA. The touch display device 100 can include a gate driving circuit 120, a data driving circuit 130, and a controller 140 for driving various signal lines provided in the display panel 110.

[0035] A plurality of gate lines GL and a plurality of data lines DL can be provided in the display panel 110. The plurality of sub-pixels SP can be located in an area where the gate lines GL and the data lines DL cross each other.

[0036] The gate driving circuit 120 is controlled by the controller 140 and sequentially outputs a scan signal to the plurality of gate lines GL arranged on the display panel 110, thereby controlling a driving timing of the plurality of sub-pixels SP.

[0037] The gate driving circuit 120 can include one or more gate driver integrated circuits GDICs. According to a driving method, the gate driving circuit 120 can be located at only one side of the display panel 110, or can be located at both sides of the display panel 110.

[0038] Each gate driver integrated circuit GDIC can be connected to a bonding pad of the display panel 110 through a tape automated bonding (TAB) method or a chip on glass (COG) method, or can be implemented through a gate in panel (GIP) method and then arranged directly on the display panel 110. In some cases, each gate driver integrated circuit GDIC can be integrated and arranged on the display panel 110. In addition, each gate driver integrated circuit GDIC can be implemented through a chip on film (COF) method in which elements are mounted on a film connected to a thin film of the display panel 110.

[0039] The data driving circuit 130 receives image data from the controller 140 and converts the image data into an analog data voltage Vdata. Then, the data driving circuit 130 outputs the data voltage Vdata to each data line DL according to a timing at which a scan signal is applied through the gate line GL, so that each of the plurality of sub-pixels SP emits light having luminance according to the image data.

[0040] The data driving circuit 130 can include one or more source driver integrated circuits SDICs.

[0041] Each source driver integrated circuit SDIC can include a shift register, a latch circuit, a digital-to-analog converter, an output buffer, etc.

[0042] Each source driver integrated circuit SDIC can be connected to a pad of the display panel 110 through a tape automated bonding (TAB) method or a chip on glass (COG) method, or can be directly disposed on the display panel 110. Alternatively, in some cases, each source driver integrated circuit SDIC can be integrated and disposed on the display panel 110. In addition, each source driver integrated circuit SDIC can be implemented through a chip on film (COF) method in which each source driver integrated circuit SDIC can be mounted on a film connected to a thin film on the display panel 110, and can be electrically connected to the display panel 110 through a wiring on the film.

[0043] The controller 140 provides various control signals to the gate driving circuit 120 and the data driving circuit 130, and controls the operations of the gate driving circuit 120 and the data driving circuit 130.

[0044] The controller 140 can be mounted on a printed circuit board, a flexible printed circuit, or the like, and can be electrically connected to the gate driving circuit 120 and the data driving circuit 130 through the printed circuit board, the flexible printed circuit, or the like.

[0045] The controller 140 allows the gate driving circuit 120 to output a scan signal according to timing implemented in each frame, and converts a data signal received from the outside into a format conforming to a data signal used in the data driving circuit 130, and then outputs the converted image data to the data driving circuit 130.

[0046] The controller 140 receives various timing signals including a vertical synchronization signal VSYNC, a horizontal synchronization signal HSYNC, an input data enable DE signal, a clock signal CLK, and the like, and image data from the outside (e.g., a host system).

[0047] The controller 140 can generate various control signals using the various timing signals received from the outside, and can output the control signals to the gate driving circuit 120 and the data driving circuit 130.

[0048] For example, to control the gate driving circuit 120, the controller 140 outputs various gate control signals GCS including a gate start pulse GSP, a gate shift clock GSC, a gate output enable signal GOE, and the like.

[0049] The gate start pulse GSP controls an operation start timing of one or more gate driver integrated circuits GDICs constituting the gate driving circuit 120. The gate shift clock GSC, which is a clock signal commonly input to the one or more gate driver integrated circuits GDICs, controls a shift timing of a scan signal. The gate output enable signal GOE specifies timing information regarding the one or more gate driver integrated circuits GDICs.

[0050] In addition, in order to control the data driving circuit 130, the controller 140 outputs various data control signals DCS including a source start pulse SSP, a source sampling clock SSC, a source output enable signal SOE, and the like.

[0051] The source start pulse SSP controls the data sampling start timing of one or more source driver integrated circuits SDIC that constitute the data driving circuit 130. The source sampling clock SSC is a clock signal for controlling the timing of sampling data in each source driver integrated circuit SDIC. The source output enable signal SOE controls the output timing of the data driving circuit 130.

[0052] The touch display device 100 can further include a power management integrated circuit for supplying various voltages or currents to the display panel 110, the gate driving circuit 120, the data driving circuit 130, and the like, or controlling the various voltages or currents supplied thereto.

[0053] Depending on the type of the display panel 110, a liquid crystal or a light emitting element can be provided on each sub-pixel SP. In addition, an electrode to which a data voltage Vdata is applied, an electrode to which a common voltage is applied, and the like can be provided on the sub-pixel SP.

[0054] Further, the touch display device 100 can include a sensor, a line, and a driving circuit, and the like for sensing a touch of a user to the display panel 110.

[0055] For example, the touch display device 100 according to an embodiment of the disclosure can include a plurality of touch electrodes TE disposed on the display area AA, a touch driving circuit 150 that drives the touch electrodes TE, and a plurality of touch lines TL that connect the touch electrodes TE and the touch driving circuit 150 to each other. Further, the touch display device 100 can include a touch controller (not shown) for controlling the touch driving circuit 150 and sensing a touch based on a signal detected by the touch driving circuit 150.

[0056] The touch electrode TE can be, for example, a transparent electrode. Alternatively, the touch electrode TE can be an opaque electrode and at least a portion of the touch electrode TE can be open.

[0057] In a case where the touch electrode TE includes an open portion, the touch electrode TE can be in a mesh shape. The open portion of the touch electrode TE can overlap with a light emitting area disposed on each sub-pixel SP.

[0058] The connection structure of the touch lines TL and the touch electrodes TE can vary according to the arrangement structure of the touch electrodes TE and the touch sensing method. For example, one touch line TL can be connected to a plurality of touch electrodes TE, or at least one touch line TL can be connected to each touch electrode TE.

[0059] For example, the plurality of touch electrodes TE can include a plurality of touch electrodes TE connected in the X-axis direction and a plurality of touch electrodes TE connected in the Y-axis direction. And a touch line TL electrically connected to the touch electrodes TE connected in the X-axis direction and a touch line TL electrically connected to the touch electrodes TE connected in the Y-axis direction can be provided.

[0060] In this case, the plurality of touch electrodes TE can be provided on the same layer. Some of the plurality of touch electrodes TE can be connected through a connection line provided on the same layer, and the remaining touch electrodes of the plurality of touch electrodes TE can be connected through a connection line provided on a different layer.

[0061] When a touch is sensed, a touch driving signal can be applied to the plurality of touch electrodes TE connected in the X-axis direction or the Y-axis direction, and a touch sensing signal can be detected from the plurality of touch electrodes TE connected in the X-axis direction or the Y-axis direction. In a state in which different signals are applied to the touch electrodes TE connected in the X-axis direction and the touch electrodes TE connected in the Y-axis direction, a touch can be sensed by detecting a change in mutual capacitance between the touch electrodes TE.

[0062] For another example, the plurality of touch electrodes TE can be separately provided, and the touch line TL can be electrically connected to each touch electrode TE.

[0063] In this case, the plurality of touch electrodes TE can be provided on the same layer. A plurality of touch lines TL can be provided on a layer different from the layer on which the touch electrodes TE are provided. Each of the plurality of touch lines TL can be electrically connected to each of the plurality of touch electrodes TE. A portion of the touch line TL can overlap the touch electrode TE that is not electrically connected to the touch line TL.

[0064] A touch driving signal can be provided to the touch electrode TE through the touch line TL, and a touch can be sensed by detecting a change in self-capacitance detected through the touch line TL.

[0065] Alternatively, in some cases, in a structure in which the touch electrodes TE connected in the X-axis direction and the touch electrodes TE connected in the Y-axis direction are provided, mutual-capacitance-based sensing and self-capacitance-based sensing can be performed.

[0066] The touch driving circuit 150 can output a touch driving signal to the touch electrode TE through the touch line TL, and can detect a touch sensing signal from the touch electrode TE.

[0067] For example, the touch driving circuit 150 can include an operational amplifier connected to the touch line TL to provide a driving signal and receive a touch sensing signal, and a feedback capacitor to accumulate electric charges according to a signal received by the operational amplifier. In addition, the touch driving circuit 150 can include an integrator to process an output signal of the operational amplifier, a sample and hold circuit, an analog-to-digital converter, and the like.

[0068] The touch driving circuit 150 can convert a touch sensing signal detected from the touch electrode TE into sensing data of a digital type, and can transmit the sensing data to a touch controller. The touch controller can detect presence or absence of a touch and a touch coordinate, and the like, based on the sensing data received from the touch driving circuit 150.

[0069] The touch driving circuit 150 can be provided on the display panel 110 as a separate circuit, and in some cases, can be implemented as an integrated type having the data driving circuit 130 or the like and provided.

[0070] As described above, according to an embodiment of the disclosure, a touch of a user to the display panel 110 can be sensed by driving the touch electrode TE included in the touch display device 100. And the touch electrode TE can be provided on the display panel 110 or can be provided in an embedded manner in the display panel 110.

[0071] Here, in a case where the touch electrode TE is provided in the display panel 110 in an embedded manner, a structure in which the touch electrode TE is provided can be different according to a type of the touch display device 100.

[0072] For example, in a case where the touch display device 100 is of a top emission structure, the touch electrode TE can be provided on an encapsulation portion that protects a light emitting element in the display panel 110. Alternatively, in a case where the touch display device 100 is of a bottom emission structure, the touch electrode TE can be provided under the light emitting element.

[0073] In addition, the touch line TL connected to the touch electrode TE can be provided on a non-display area NA of the display panel 110 or can be provided on a display area AA of the display panel 110 according to a type.

[0074] The touch electrode TE and the touch line TL provided on the display area AA of the display panel 110 can be provided to avoid at least an area in which light is emitted in the sub-pixel SP.

[0075] Figure 2 is a diagram illustrating an example of a planar structure in which the touch electrode TE and the touch line TL according to an embodiment of the disclosure are disposed in the touch display device 100. Figure 3 is a diagram illustrating an example of a cross-sectional structure taken along a line A-A' in Figure 2

[0076] Referring to Figure 2 , Figure 2 shows an example of a top emission structure in which the touch display device 100 emits light to the front of the substrate. Also Figure 2 shows an example in which the touch display device 100 is a transparent display device having high transmittance.

[0077] Each sub-pixel SP included in the touch display device 100 can include a light emission area EA in which light emitted by a light emission element is output to the outside. Each sub-pixel SP can include a circuit area in which various circuit elements for driving the light emission element disposed on the light emission area EA are disposed. At least a portion of the circuit area can overlap the light emission area EA.

[0078] In a case in which the touch display device 100 is a bottom emission structure, the light emission area EA can be placed not to overlap the circuit area.

[0079] At least a portion of an area of the sub-pixel SP other than the light emission area EA and the circuit area can be a transparent area TA in which no circuit elements or lines are disposed. Since the sub-pixel SP includes the transparent area TA having high transmittance, a transparent display device can be implemented.

[0080] The sub-pixel SP can include a line area LA in which at least a portion of the touch electrode TE and a touch line TL for touch sensing are disposed.

[0081] The touch electrode TE can be disposed on the same layer as the touch line TL. The touch electrode TE can be disposed on a different layer from the touch line TL. Alternatively, a portion of the touch electrode TE and a portion of the touch line TL can be disposed on the same layer.

[0082] For example, the touch electrode TE can include a plurality of first electrode parts TEa made of a first touch sensor metal TSM1 disposed on a first sensor layer.

[0083] The touch electrode TE can include a plurality of second electrode parts TEb made of a second touch sensor metal TSM2 disposed on a second sensor layer different from the first sensor layer.

[0084] ​At least one insulating layer can be disposed between the first sensor layer and the second sensor layer. Also, for example, the second sensor layer can be located above the sensor layer, but embodiments of the present disclosure are not limited thereto.

[0085] The second electrode part TEb of the touch electrode TE can be disposed in a direction crossing a direction in which the first electrode part TEa of the touch electrode TE is disposed.

[0086] The second electrode part TEb of the touch electrode TE can be electrically connected to the first electrode part TEa of the touch electrode TE through the contact hole CH. The mesh shape of the touch electrode TE can be made by the structure in which the first electrode part TEa and the second electrode part TEb of the touch electrode TE are connected.

[0087] For example, the touch line TL can be made of the second touch sensor metal TSM2 disposed on the second sensor layer.

[0088] The touch line TL can be electrically connected to the first electrode part TEa of the touch electrode TE through the contact hole CH.

[0089] Since the touch line TL is made of the second touch sensor metal TSM2, the touch line TL can be disposed on the same layer as the second electrode part TEb of the touch electrode TE. Also, in a case where the number of the touch lines TL required for electrical connection between the touch electrode TE and the touch driving circuit 150 increases, the touch lines TL disposed on the line area LA can be increased.

[0090] Therefore, a part of the line area LA can overlap with the light emitting area EA or the transparent area TA.

[0091] Referring to Figure 3 , the touch electrode TE and the touch line TL can be disposed on the touch buffer layer TBUF. Although Figure 3 is not shown, the light emitting element, the circuit element driving the light emitting element, and the encapsulation part protecting the light emitting element, etc. can be disposed below the touch buffer layer TBUF.

[0092] The first electrode part TEa of the touch electrode TE made of the first touch sensor metal TSM1 can be disposed on the touch buffer layer TBUF. The touch insulating layer TILD can be disposed on the first electrode part TEa of the touch electrode TE.

[0093] The second electrode part TEb of the touch electrode TE and the touch line TL made of the second touch sensor metal TSM2 can be disposed on the touch insulating layer TILD.

[0094] A touch protection layer TPAS can be disposed on the second electrode part TEb of the touch electrode TE and the touch line TL. A black matrix BM can be disposed on a partial area on the touch protection layer TPAS.

[0095] Since a portion of the line area LA in which the touch line TL is disposed overlaps the light emitting area EA, the aperture ratio of the sub-pixel SP can decrease. Since a portion of the line area LA overlaps the transparent area TA, the transmittance of the sub-pixel SP can decrease.

[0096] The touch display device 100 according to the embodiment of the disclosure provides a method capable of minimizing a decrease in the aperture ratio or the transmittance of the sub-pixel SP due to an increase in the number of the touch lines TL disposed in the display panel 110.

[0097] Figure 4 FIG. 2 is a diagram illustrating another example of a planar structure in which the touch electrode TE and the touch line TL are disposed in the touch display device 100 according to the embodiment of the disclosure. Figure 4 FIG. 3 is a diagram illustrating a structure other than the structure in which the black matrix BM is disposed to clearly illustrate the arrangement structure of the touch electrode TE and the touch line TL. Figure 5 FIG. 4 is a diagram illustrating an example of a cross-sectional structure taken along a line B-B' in FIG. 2. Figure 4

[0098] Referring to FIG. 1, Figure 4 The touch electrode TE can include a plurality of first electrode parts TEa and a plurality of second electrode parts TEb.

[0099] The first electrode part TEa of the touch electrode TE can be made of a first touch sensor metal TSM1 disposed on a first sensor layer. The second electrode part TEb of the touch electrode TE can be made of a second touch sensor metal TSM2 disposed on a second sensor layer.

[0100] The first electrode part TEa of the touch electrode TE can be disposed in a direction crossing a disposition direction of the second electrode part TEb of the touch electrode TE. The first electrode part TEa of the touch electrode TE can be electrically connected to the second electrode part TEb of the touch electrode TE through a contact hole CH.

[0101] The touch line TL can include a plurality of first line parts TLa and a plurality of second line parts TLb.

[0102] The first line part TLa of the touch line TL can be made of a first touch sensor metal TSM1 disposed on a first sensor layer. The second line part TLb of the touch line TL can be made of a second touch sensor metal TSM2 disposed on a second sensor layer.

[0103] ​The plurality of first line members TLa and the plurality of second line members TLb included in the touch line TL can be alternately arranged along a direction in which the touch line TL is arranged. Also, the first line member TLa of the touch line TL and the second line member TLb of the touch line TL can be electrically connected to each other through the contact hole CH.

[0104] Therefore, at least a portion of any one of the touch lines TL can be arranged to overlap another touch line TL.

[0105] For example, at least a portion of the first touch line TL1 can be arranged to overlap the second touch line TL2.

[0106] At least a portion of the first line member TL1a of the first touch line TL1 can be arranged to overlap the second line member TL2b of the second touch line TL2.

[0107] At least a portion of the second line member TL1b of the first touch line TL1 can be arranged to overlap the first line member TL2a of the second touch line TL2.

[0108] Because each of the first touch line TL1 and the second touch line TL2 has a structure in which the first line member TLa made of the first touch sensor metal TSM1 and the second line member TLb made of the second touch sensor metal TSM2 are alternated with and connected to each other, at least a portion of the first touch line TL1 can be arranged to overlap the second touch line TL2.

[0109] Therefore, it is possible to minimize the area in which the first touch line TL1 and the second touch line TL2 are arranged. Since the area in which the touch line TL is arranged is minimized, it is possible to minimize the reduction in the aperture ratio or the transmittance of the sub-pixel SP due to the arrangement of the touch line TL.

[0110] Referring to Figure 5 , Figure 5 An example of a cross-sectional structure of a portion in which the second line member TL1b of the first touch line TL1 and the first line member TL2a of the second touch line TL2 overlap each other is shown.

[0111] Since the first touch line TL1 and the second touch line TL2 are arranged to overlap each other, it is possible to reduce the area in which the touch line TL is arranged.

[0112] It is possible to prevent the aperture ratio or the transmittance of the sub-pixel SP from being reduced due to the arrangement of the touch line TL.

[0113] Furthermore, even if the black matrix BM is arranged on the touch line TL (as in the case of the first embodiment), it is possible to prevent the aperture ratio or the transmittance of the sub-pixel SP from being reduced due to the arrangement of the touch line TL. Figure 3The touch lines TL can be arranged in the region where the black matrix BM is not provided. In this case, the touch lines TL can be arranged in the region where the black matrix BM is not provided, but the open ratio or the transmittance can be reduced due to the arrangement of the touch lines TL. However, since the touch lines TL can be located in the region where the black matrix BM is provided (as shown in the example), but the reduction of the open ratio or the transmittance due to the arrangement of the touch lines TL can be prevented.

[0114] Accordingly, the touch electrodes TE and the touch lines TL can be provided while minimizing the reduction of the open ratio and the transmittance of the sub-pixels SP. Alternatively, the touch sensitivity can be improved by further arranging the touch electrodes TE, or the touch display apparatus 100 having a large area can be easily implemented by further arranging the touch lines TL.

[0115] Since a part of the touch lines TL is provided by using the first touch sensor metal TSM1, the structure of the first electrode part TEa of the touch electrode TE provided by using the first touch sensor metal TSM1 can be changed.

[0116] Referring to Figure 4 At least one of the plurality of first electrode parts TEa included in the touch electrode TE can be located on a region between the touch lines TL. And only one end of the first electrode part TEa can be electrically connected to the second electrode part TEb through the contact hole CH.

[0117] At least one of the plurality of first electrode parts TEa included in the touch electrode TE can be provided to cross the touch lines TL.

[0118] For example, the first electrode part TEa can be provided to be electrically connected to a first point P1 of a first line part TL1a of the first touch line TL1 and a second line part TL1b of the first touch line TL1 and a second point P2 of a first line part TL2a of the second touch line TL2 and a second line part TL2b of the second touch line TL2 between the regions.

[0119] The first line part TLa provided on the first sensor layer and the second line part TLb provided on the second sensor layer can be alternated and can constitute the touch lines TL.

[0120] Accordingly, on the region where the touch line TL changes from the first line part TLa to the second line part TLb or from the second line part TLb to the first line part TLa, the first electrode part TEa of the touch electrode TE made of the first touch sensor metal TSM1 can be provided.

[0121] A part of the second line part TLb of the touch line TL can overlap the first electrode part TEa of the touch electrode TE.

[0122] Also, since the second line part TLb of the touch line TL passes through the first electrode part TEa of the touch electrode TE to be connected to the first line part TLa of the touch line TL, the length of the second line part TLb of the touch line TL can be greater than the length of the first line part TLa of the touch line TL.

[0123] As described above, the mesh shape of the touch electrode TE can be made by the first electrode part TEa of the touch electrode TE, which is disposed to cross the touch line TL, being electrically connected to the touch electrode TE disposed on the adjacent pixel area.

[0124] The first electrode part TEa of the touch electrode TE, which crosses the touch line TL, can be electrically connected to the second electrode part TEb through the contact hole CH between the first point P1 and the second point P2.

[0125] Alternatively, the first electrode part TEa of the touch electrode TE can be electrically connected to the second electrode part TEb through the contact hole CH on an area other than the area between the first point P1 and the second point P2.

[0126] Figure 6 and Figure 7 FIGS. 6A and 6B are diagrams illustrating other examples of a planar structure in which the touch electrode TE and the touch line TL according to an embodiment of the disclosure are disposed in the touch display device 100.

[0127] Referring to Figure 6 As described above, the touch line TL can include a plurality of first line parts TLa and a plurality of second line parts TLb.

[0128] The first line part TLa of the touch line TL and the second line part TLb of the touch line TL can be alternately disposed along the arrangement direction of the touch line TL. The first line part TLa of the touch line TL can be electrically connected to the second line part TLb of the touch line TL through the contact hole CH.

[0129] The touch electrode TE can include a plurality of first electrode parts TEa and a plurality of second electrode parts TEb.

[0130] The second electrode part TEb of the touch electrode TE made of the second touch sensor metal TSM2 can be disposed along the direction in which the touch line TL is disposed.

[0131] A portion of the first electrode part TEa of the touch electrode TE made of the first touch sensor metal TSM1 can be disposed along a direction crossing the direction in which the touch line TL is disposed. Also, another portion of the first electrode part TEa can be disposed along the direction in which the touch line TL is disposed.

[0132] For example, the first electrode part TEa can be disposed on an area overlapping the second electrode part TEb of the touch electrode TE adjacent to the first touch line TL1 and the second touch line TL2.

[0133] The first electrode part TEa overlapping the second electrode part TEb of the touch electrode TE can partially overlap the touch line TL, and can be formed in one body with the first electrode part TEa crossing the second electrode part TEb of the touch electrode TE.

[0134] Accordingly, the first electrode part TEa and the second electrode part TEb of the touch electrode TE can be electrically connected to each other on an area other than an area where the touch line TL and the first electrode part TEa of the touch electrode TE cross.

[0135] For example, on the area indicated by 601 and the area indicated by 602, the first electrode part TEa and the second electrode part TEb of the touch electrode TE can be electrically connected.

[0136] Accordingly, on the area indicated by 603, a contact hole CH for electrical connection between the first electrode part TEa and the second electrode part TEb of the touch electrode TE can not be disposed.

[0137] The area indicated by 603 can be an area requiring a contact hole CH for electrical connection between the first line part TLa and the second line part TLb of the touch line TL to be arranged.

[0138] On the area indicated by 603, since the contact hole CH for electrical connection between the first electrode part TEa and the second electrode part TEb of the touch electrode TE can be removed, on an area where the touch sensor metal TSM constituting the touch line TL is changed, a reduction in the transparent area TA caused by the contact hole CH can be minimized.

[0139] And Figure 6 The example shown in FIG. 6 illustrates an example of a structure in which the touch line TL and the second electrode part TEb of the touch electrode TE are alternately disposed. Since the touch line TL is repeatedly disposed, a difference in parasitic capacitance between the touch line TL and the peripheral electrode can be reduced, and a touch sensing performance having high uniformity can be provided.

[0140] Alternatively, by disposing the touch line TL entirely between the light emission area EA and the transparent area TA, the number of the touch line TL disposed in the display panel 110 can be increased while minimizing the area in which the touch line TL is disposed.

[0141] Referring to Figure 7The touch electrode TE can include a first electrode part TEa and a second electrode part TEb. The second electrode part TEb of the touch electrode TE can be disposed along a direction in which the touch line TL is disposed.

[0142] A portion of the first electrode part TEa of the touch electrode TE can be disposed to overlap the second electrode part TEb of the touch electrode TE. Other portions of the first electrode part TEa of the touch electrode TE can be disposed to cross the second electrode part TEb of the touch electrode TE.

[0143] The second electrode part TEb of the touch electrode TE can be located between the light emitting areas EA of the subpixels SP.

[0144] For example, the touch line TL can be located between the light emitting area EA and the transparent area TA.

[0145] The touch line TL can include a plurality of first line parts TLa and a plurality of second line parts TLb. Also, the first line parts TLa and the second line parts TLb can be alternately disposed.

[0146] At least a portion of the first touch line TL1 can be disposed to overlap the second touch line TL2. At least a portion of the third touch line TL3 can be disposed to overlap at least a portion of the fourth touch line TL4. Similarly, a fifth touch line TL5, a sixth touch line TL6, a seventh touch line TL7, and an eighth touch line TL8 can be disposed.

[0147] The number of the touch lines TL disposed can be increased while maintaining the areas in which the touch electrode TE and the touch line TL are disposed to be substantially the same.

[0148] Accordingly, due to the arrangement of the touch line TL in the touch display device having a large area, the touch line TL can be disposed while minimizing a decrease in the aperture ratio or the transmittance of the subpixel SP.

[0149] Also, since a portion of the touch line TL is disposed on the same layer as a layer in which a portion of the touch electrode TE is disposed, a contact hole CH for electrical connection between the touch line TL and the touch electrode TE can not be disposed.

[0150] Figure 8A and Figure 8B are diagrams illustrating examples of a structure in which the touch line TL is connected to the touch electrode TE in the touch display device 100 according to an embodiment of the disclosure. Figure 8A and Figure 8B are diagrams illustrating Figure 4 examples of a connection structure between the touch line TL and the touch electrode TE illustrated in the examples.

[0151] Referring to Figure 8A andFigure 8B The first electrode part TEa of the touch electrode TE can pass through and be disposed on a region between a first point P1 at which the first line part TL1a and the second line part TL1b of the first touch line TL1 are connected to each other and a second point P2 at which the first line part TL2a and the second line part TL2b of the second touch line TL2 are connected to each other.

[0152] For example, as shown in a portion indicated by 801, the first line part TL1a of the first touch line TL1 can be connected to the first electrode part TEa of the touch electrode TE. Figure 8A

[0153] The first line part TL2a of the second touch line TL2 can not be connected to the first electrode part TEa of the touch electrode TE.

[0154] Accordingly, the first touch line TL1 and the touch electrode TE can be electrically connected to each other without adding a contact hole CH for electrical connection between the first touch line TL1 and the touch electrode TE.

[0155] For another example, as shown in a portion indicated by 802, the first line part TL2a of the second touch line TL2 can be connected to the first electrode part TEa of the touch electrode TE. Figure 8B The first line part TL1a of the first touch line TL1 can not be connected to the first electrode part TEa of the touch electrode TE.

[0156] Accordingly, the second touch line TL2 and the touch electrode TE can be electrically connected without adding a separate contact hole CH.

[0157] Since the first line part TLa and the second line part TLb are alternated to constitute the touch line TL, different touch lines TL can be disposed to overlap each other, and a structure in which the touch line TL and the touch electrode TE are directly connected can be provided.

[0158] Further, the touch line TL can maintain a structure separated from the first electrode part TEa of the touch electrode TE on a region in which the touch line TL is not connected to the touch electrode TE. Alternatively, in some cases, the touch line TL can be cut, and the cut touch line TL can connect the touch electrode TE and can reduce the resistance of the touch electrode TE.

[0159]

[0160] Figure 9A Figure 9B Figure 9C and Figure 9D are diagrams showing examples of structures in which the touch line TL and the link line LL according to the embodiment of the disclosure are disposed in the touch display device 100. ​​​​

[0161] Figure 9A and Figure 9B An example of a structure in which a link line LL electrically connected between a touch line TL and a touch pad TP is made of a first touch sensor metal TSM1 is shown. The link line LL can be disposed on a non-display area NA of the display panel 110.

[0162] Referring to Figure 9A and Figure 9B , the touch line TL can include a first line part TLa made of the first touch sensor metal TSM1 and a second line part TLb made of a second touch sensor metal TSM2.

[0163] The first line part TLa and the second line part TLb constituting the touch line TL can be alternately disposed.

[0164] The first line part TLa and the second line part TLb can be alternated on an area between the touch electrodes TE. Also, the first line part TLa and the second line part TLb can be alternately disposed in an area corresponding to the touch electrodes TE.

[0165] On an area where a first electrode part TEa of the touch electrode TE having a mesh shape is disposed to cross the touch line TL, the touch line TL can be changed from the first line part TLa to the second line part TLb, or from the second line part TLb to the first line part TLa.

[0166] Accordingly, the touch line TL can be disposed to cross the first electrode part TEa of the touch electrode TE constituting a mesh shape.

[0167] The touch line TL can be directly connected to the first electrode part TEa of the touch electrode TE through the first line part TLa constituting the touch line TL.

[0168] The touch line TL connected to the touch electrode TE can extend to an area after a point where the touch line TL is connected to the touch electrode TE, and can overlap with other touch electrodes TE.

[0169] For example, such as a portion indicated by 901 in Figure 9A , the third touch line TL3 and the fourth touch line TL4 extend to an area after the third touch electrode TE3 and the fourth touch electrode TE4, and can overlap with the first touch electrode TE1 and the second touch electrode TE2.

[0170] For another example, such as a portion indicated by 902 in Figure 9B , the third touch line TL3 can be cut on an area after the third touch electrode TE3. The fourth touch line TL4 can be cut on an area after the fourth touch electrode TE4.

[0171] The cut touch line TL can be cut to correspond to each of the overlapped touch electrodes TE. And the cut touch line TL can be electrically connected to the overlapped touch electrodes TE and can constitute a part of the touch electrodes TE. Accordingly, the resistance of the touch electrodes TE can be reduced.

[0172] In this case, the cut touch line TL in the area corresponding to the touch electrode TE can include a plurality of first line parts TLa and a plurality of second line parts TLb.

[0173] The second line part TLb of the cut touch line TL can pass through an area on the first electrode part TEa of the touch electrode TE provided to cross the touch line TL and can be electrically connected to another first electrode part TEa of the touch electrode TE provided in the same direction as the touch line TL is provided.

[0174] Since the second line part TLb of the cut touch line TL constitutes the touch electrode TE, it can be considered that the second electrode part TEb of the touch electrode TE passes through an area crossing the first electrode part TEa and is electrically connected to the first electrode part TEa provided in the same direction.

[0175] Figure 9C And Figure 9D An example of a structure in which the link line LL electrically connected between the touch line TL and the touch pad TP is made of the second touch sensor metal TSM2 is shown.

[0176] Such as Figure 9C As shown in a portion indicated by 903, the touch line TL can be extended and provided to an area behind the touch electrode TE electrically connected to the touch line TL.

[0177] Alternatively, such as Figure 9D As shown in a portion indicated by 904, the touch line TL is cut on an area behind the touch electrode TE electrically connected to the touch line TL, the touch line TL can be electrically connected to the overlapped touch electrode TE and can constitute a part of the touch electrode TE.

[0178] In a structure in which the touch line TL is made of the first line part TLa and the second line part TLb, a structure connecting between the touch line TL and the touch electrode TE can be variously implemented.

[0179] Further, the link line LL connecting between the touch line TL and the touch pad TP can be implemented by using the touch sensor metal TSM provided on a single layer, or can be implemented by the first touch sensor metal TSM1 provided on the first sensor layer and the second touch sensor metal TSM2 provided on the second sensor layer.

[0180] Figure 10 FIG. 1 is a diagram illustrating a structure of a touch display device according to an embodiment of the present disclosure.

[0181] Referring to Figure 10 For example, the link line LL can be made of a first touch sensor metal TSM1 disposed on a first sensor layer.

[0182] The link line LL can be directly connected to the touch line TL made of the first line member TLa on an area where the touch line TL is connected to the link line LL, and can be connected to the touch line TL made of the second line member TLb through the contact hole CH.

[0183] For another example, the link line LL can be made of a second touch sensor metal TSM2 disposed on a second sensor layer.

[0184] The link line LL can be directly connected to the touch line TL made of the second line member TLb on an area where the touch line TL is connected to the link line LL, and can be connected to the touch line TL made of the first line member TLa through the contact hole CH.

[0185] For another example, the link line LL can be made of the first touch sensor metal TSM1 and the second touch sensor metal TSM2.

[0186] The touch line TL made of the first line member TLa on an area connected to the link line LL can be connected to the link line LL made of the first touch sensor metal TSM1. The touch line TL made of the second line member TLb on an area connected to the link line LL can be connected to the link line LL made of the second touch sensor metal TSM2.

[0187] Accordingly, a portion such as indicated by 1001 can not be provided with the contact hole CH for electrical connection between the touch line TL and the link line LL.

[0188] In addition, the link line LL can be provided in various structures according to the interval or distance between the touch lines TL.

[0189] For example, in a case where the interval between the touch lines TL is a normal level, the link line LL can be provided such as the example shown in EX 1. In a case where the interval between the touch lines TL is narrow, the link line LL can be provided such as the example shown in EX 2. In a case where the interval between the touch lines TL is wide, the link line LL can be provided such as the example shown in EX 3.

[0190] In a case where the interval between the touch lines TL is narrow, such as the portion indicated by 1002, the touch line TL or the link line LL can have a curved or bent structure.

[0191] Accordingly, even in a case where the interval between the touch lines TL is narrow, the plurality of touch lines TL provided in the display panel 110 can be implemented by the structure of the double-layer touch line TL and the curved structure of the touch line TL or the link line LL.

[0192] According to various embodiments of the present disclosure, by the structure in which the first line member TLa provided on the first sensor layer and the second line member TLb provided on the second sensor layer are alternated, a structure in which at least a portion of different touch lines TL can be provided to overlap each other can be provided.

[0193] Because the touch electrode TE crossing the touch line TL is provided on an area in which the layer constituting the touch line TL is changed, a mesh shape of the touch electrode TE can be implemented.

[0194] Accordingly, in order to maintain the shape of the touch electrode TE for touch sensing, and while minimizing the area in which the touch line TL is provided, more touch lines TL can be provided, the arrangement structure of the touch line TL can be implemented while minimizing the reduction in the aperture ratio or the transmittance of the sub-pixel SP.

[0195] The above description has been presented to enable any person skilled in the art to make and use the technical idea of the present disclosure, and has been provided in the context of a particular application and its requirements. Various modifications, additions and substitutions to the described embodiments will be apparent to those skilled in the art and, accordingly, the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. The above description and drawings are provided only for the purpose of illustrating the technical idea of the present disclosure. That is, the disclosed embodiments are intended to illustrate the scope of the technical idea of the present disclosure. Accordingly, the scope of the present disclosure is not limited to the illustrated embodiments, but is in accordance with the widest scope consistent with the claims. The scope of protection of the present disclosure should be construed in accordance with the appended claims, and the technical idea within the equivalent scope thereof should be understood to be included in the scope of protection of the present disclosure.

[0196] Cross Reference to Related Applications

[0197] This application claims priority to Korean Patent Application No. 10-2020-0187760, filed on December 30, 2020, which is incorporated herein by reference for all purposes as if fully set forth herein.

Claims

1. A touch display device, comprising: a plurality of sub-pixels, each of the plurality of sub-pixels including a light emitting area from which light is emitted and a transparent area adjacent to the light emitting area and in the same plane as the light emitting area without overlapping the light emitting area; a plurality of touch electrodes; and a plurality of touch lines, each of the plurality of touch lines being electrically connected to each of the plurality of touch electrodes, wherein each of the plurality of touch electrodes includes: a plurality of first electrode parts provided on a first sensor layer; and a plurality of second electrode parts provided on a second sensor layer different from the first sensor layer and electrically connected to at least one of the plurality of first electrode parts, and wherein each of the plurality of touch lines includes: a plurality of first line parts provided on the first sensor layer; and a plurality of second line parts provided on the second sensor layer, a portion of the plurality of second line parts overlapping at least one of the plurality of first electrode parts in a position located between the transparent area and the light emitting area of each of the plurality of sub-pixels, and the plurality of second line parts being electrically connected between two first line parts adjacent to each other in the plurality of first line parts. the plurality of touch lines includes a first touch line and a second touch line, and 2. The touch display device of claim 1, wherein, at least a portion of the first line parts of the first touch line overlaps the second line parts of the second touch line, and at least a portion of the second line parts of the first touch line overlaps the first line parts of the second touch line. at least one of the plurality of first electrode parts is located between a first point at which the first line parts of the first touch line and the second line parts of the first touch line are connected to each other and a second point at which the first line parts of the second touch line and the second line parts of the second touch line are connected to each other.

3. The touch display device of claim 2, wherein, the first line parts of the first touch line and the first line parts of the second touch line are separated from the first electrode part located between the first point and the second point.

4. The touch display device of claim 3, wherein, the first line parts of the first touch line or the first line parts of the second touch line are connected to the first electrode part located between the first point and the second point.

5. The touch display device of claim 3, wherein, the first electrode part located between the first point and the second point is electrically connected to at least one of the plurality of second electrode parts on an area other than an area between the first point and the second point.

6. The touch display device of claim 3, wherein, the plurality of first line parts and the plurality of second line parts included in each of the plurality of touch lines are alternately provided along a direction in which the plurality of touch lines are provided.

7. The touch display device of claim 1, wherein, the plurality of touch lines and the plurality of second electrode parts are alternately provided along a direction crossing the direction in which the plurality of touch lines are provided.

8. The touch display device of claim 1, wherein, at least one of the plurality of first electrode parts crosses the plurality of touch lines.

9. The touch display device of claim 1, wherein, ​ 10. The touch display device of claim 1, wherein, At least one of the plurality of first electrode parts is disposed in a direction crossing a direction in which the plurality of touch lines are disposed, and is disposed on a region other than a region overlapping the plurality of touch lines.

11. The touch display device of claim 1, wherein, At least one of the plurality of second electrode parts overlaps a part of the first electrode part disposed in a direction crossing a direction in which the plurality of second electrode parts are disposed, is separated from the overlapped first electrode part, and is electrically connected to the first electrode part disposed in a direction in which the plurality of second electrode parts are disposed.

12. The touch display device of claim 2, further comprising: a first link line disposed on the first sensor layer and electrically connected to the first touch line; and a second link line disposed on the second sensor layer and electrically connected to the second touch line. A part of the first touch line overlaps a part of the second touch line at a position between the transparent region and the light emitting region of each of the plurality of sub-pixels.

13. The touch display device of claim 2, wherein, 14. A touch display device, comprising: a plurality of sub-pixels, each of the plurality of sub-pixels including a light emitting region from which light is emitted and a transparent region adjacent to and in the same plane as the light emitting region and not overlapping the light emitting region; a plurality of touch electrodes; a plurality of touch lines, each of the plurality of touch lines electrically connected to each of the plurality of touch electrodes, wherein each of the plurality of touch lines includes: a plurality of first line parts disposed on a first sensor layer; and a plurality of second line parts disposed on a second sensor layer different from the first sensor layer and electrically connected between two of the plurality of first line parts adjacent to each other, a part of the plurality of second line parts overlapping at least one of the plurality of first line parts in a position between the transparent region and the light emitting region of each of the plurality of sub-pixels. At least a part of a first line part included in any one of the plurality of touch lines overlaps a second line part included in another one of the plurality of touch lines. The plurality of first line parts are disposed on a region other than a region overlapping the plurality of touch electrodes, and a part of each of the plurality of second line parts overlaps at least one of the plurality of touch electrodes.

15. The touch display device of claim 14, wherein, 17. A touch display device, comprising:

16. The touch display device of claim 14, wherein, a plurality of touch electrodes; a plurality of touch lines, each of the plurality of touch lines electrically connected to each of the plurality of touch electrodes, wherein each of the plurality of touch electrodes includes: a plurality of first electrode parts disposed on a first sensor layer; and a plurality of second electrode parts disposed on a second sensor layer different from the first sensor layer and electrically connected to at least one of the plurality of first electrode parts, ​ ​ ​ wherein each of the plurality of touch lines includes: a plurality of first line parts disposed on the first sensor layer; and a plurality of second line parts disposed on the second sensor layer, a portion of the plurality of second line parts overlapping at least one of the plurality of first electrode parts, and the plurality of second line parts electrically connected between two adjacent first line parts of the plurality of first line parts, wherein each of the plurality of second line parts has a length greater than each of the plurality of first line parts, and wherein the plurality of touch lines includes a first touch line and a second touch line, at least a portion of the first line parts of the first touch line overlaps the second line parts of the second touch line, and at least a portion of the second line parts of the first touch line overlaps the first line parts of the second touch line, and the first line parts of the first touch line partially overlap the second line parts of the first touch line, and the first line parts of the second touch line partially overlap the second line parts of the second touch line. 18.A touch display device, comprising: a plurality of touch electrodes; and a plurality of touch lines, each of the plurality of touch lines electrically connected to each of the plurality of touch electrodes, wherein each of the plurality of touch lines includes: a plurality of first line parts disposed on a first sensor layer; and a plurality of second line parts disposed on a second sensor layer different from the first sensor layer, and electrically connected between two adjacent first line parts of the plurality of first line parts, wherein each of the plurality of second line parts has a length greater than each of the plurality of first line parts, and wherein the plurality of touch lines includes a first touch line and a second touch line, at least a portion of the first line parts of the first touch line overlaps the second line parts of the second touch line, and at least a portion of the second line parts of the first touch line overlaps the first line parts of the second touch line, and the first line parts of the first touch line partially overlap the second line parts of the first touch line, and the first line parts of the second touch line partially overlap the second line parts of the second touch line.

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