Touch display device and display panel

Abstract

Embodiments of the present disclosure relate to a touch display device and a display panel, and more particularly, to a touch display device including: a display panel including a plurality of touch electrode lines disposed in a display area and at least one dummy touch electrode line disposed in a non-display area; and a touch circuit supplying a touch driving signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines, and supplying a dummy touch driving signal having a phase opposite to that of the touch driving signal through a dummy touch line connected to at least one dummy touch electrode line, at least a portion of the plurality of touch lines are formed to have different line widths according to positions of the plurality of touch electrode lines.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of Korean Patent Application No. 10 - 2023 - 0160156, filed on November 20, 2023, which is incorporated herein by reference in its entirety for all purposes as if fully set forth herein. Technical field

[0003] Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device and a display panel capable of effectively canceling electromagnetic noise. Background art

[0004] Representative display devices for displaying images based on digital data include liquid crystal display (LCD) devices using liquid crystals and organic light - emitting display devices using organic light - emitting diodes (OLEDs).

[0005] Among these display devices, organic light - emitting displays use light - emitting diodes and thus have fast responsiveness and various advantages in terms of contrast, luminous efficiency, brightness, and viewing angle. In this case, the light - emitting diodes can be implemented with inorganic materials or organic materials.

[0006] An organic light - emitting diode display includes light - emitting diodes in sub - pixels arranged on a display panel, and controls the light emission of the light - emitting diodes by controlling the current flowing through the light - emitting diodes, thereby controlling the brightness represented by each sub - pixel while displaying an image.

[0007] A display device recognizes a finger touch or a pen touch on the display panel and performs input processing based on the recognized touch, thereby providing more various functions.

[0008] As an example, a touch display device capable of touch recognition may include a plurality of touch electrodes arranged or embedded in a display panel, and detects the presence and coordinates of a touch by a user on the display panel by driving the touch electrodes.

[0009] A touch display device may include signal lines for transmitting various signals, and signals applied to the signal lines may generate electromagnetic noise inside and outside the touch display device.

[0010] Therefore, when electromagnetic noise occurs in a touch display device, a malfunction may occur in touch sensing due to the electromagnetic noise, and the image quality may deteriorate.

[0011] Therefore, it is necessary to reduce the electromagnetic noise generated in a touch display device. Summary of the invention

[0012] Therefore, the inventors of the present disclosure have invented a touch display device and a display panel that can effectively reduce defects caused by electromagnetic noise.

[0013] Embodiments of the present disclosure can provide a touch display device and a display panel that can reduce defects caused by electromagnetic noise by reducing the delay deviation between a touch driving signal and a pseudo-touch driving signal and operate at low power consumption.

[0014] Embodiments of the present disclosure can also provide a touch display device and a display panel that can reduce defects caused by electromagnetic noise and the delay deviation between a touch driving signal and a pseudo-touch driving signal by controlling the line width of touch lines formed in a non-display area of the display panel.

[0015] Embodiments of the present disclosure can provide a touch display device, including: a display panel including a plurality of touch electrode lines disposed in a display area and at least one pseudo-touch electrode line disposed in a non-display area; and a touch circuit supplying a touch driving signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines and supplying a pseudo-touch driving signal having a phase opposite to that of the touch driving signal through a pseudo-touch line connected to the at least one pseudo-touch electrode line, wherein at least a part of the plurality of touch lines are formed to have different line widths according to the positions of the plurality of touch electrode lines.

[0016] In addition, embodiments of the present disclosure can provide a touch display device, including: a display panel including a plurality of touch electrode lines disposed in a display area and at least one pseudo-touch electrode line disposed in a non-display area; and a touch circuit supplying a touch driving signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines and supplying a pseudo-touch driving signal having a phase opposite to that of the touch driving signal through a pseudo-touch line connected to the at least one pseudo-touch electrode line, wherein the plurality of touch lines include a single-touch line group formed of a single metal line and a double-touch line group formed of a double metal line.

[0017] Embodiments of the present disclosure can provide a display panel, including: a plurality of touch electrode lines disposed in a display area; at least one pseudo-touch electrode line disposed in a non-display area; a plurality of touch lines respectively connected to the plurality of touch electrode lines to transmit a touch driving signal; and at least one pseudo-touch line connected to the at least one pseudo-touch electrode line to transmit a pseudo-touch driving signal having a phase opposite to that of the touch driving signal, wherein at least a part of the plurality of touch lines are formed to have different line widths according to the positions of the plurality of touch electrode lines.

[0018] According to embodiments of the present disclosure, defects caused by electromagnetic noise can be effectively reduced.

[0019] According to an embodiment of the present disclosure, by reducing the delay deviation between the touch driving signal and the pseudo-touch driving signal, it is possible to reduce defects caused by electromagnetic noise and operate at low power consumption.

[0020] According to an embodiment of the present disclosure, by controlling the line width of the touch lines formed in the non-display area of the display panel, it is possible to reduce defects caused by electromagnetic noise and the delay deviation between the touch driving signal and the pseudo-touch driving signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a view schematically showing the configuration of a touch display device according to an embodiment of the present disclosure;

[0023] Figure 2 is a view showing an example touch sensing system of a touch display device according to an embodiment of the present disclosure;

[0024] Figure 3 is a view schematically showing a touch electrode structure of mutual capacitance-based touch sensing in a touch display device according to an embodiment of the present disclosure;

[0025] Figure 4 is a view showing an example equivalent circuit of sub-pixels constituting a display panel in a touch display device according to an embodiment of the present disclosure;

[0026] Figure 5 is a view showing an example structure in which pseudo-touch electrode lines are provided in a touch display device according to an embodiment of the present disclosure;

[0027] Figure 6 is a view showing an example waveform of a touch driving signal applied to a plurality of touch electrode lines and a pseudo-touch driving signal applied to a pseudo-touch electrode line in a touch display device according to an embodiment of the present disclosure;

[0028] Figure 7 is a view showing an example signal delay between a touch driving signal and a pseudo-touch driving signal in a touch display device according to an embodiment of the present disclosure;

[0029] Figure 8 is a view showing an example structure of touch lines and pseudo-touch lines provided in a non-display area in a touch display device according to an embodiment of the present disclosure;

[0030] Figure 9 and Figure 10 is showing Figure 8 an enlarged view of region A of

[0031] Figure 11A and Figure 11B is a view showing measurement values comparing electromagnetic interference and signal delay according to the line width of touch lines provided in a non - display area at a lower end of a display panel in a touch display device according to an embodiment of the present disclosure;

[0032] Figure 12 is a view showing an example in which an X - touch line provided in a non - display area in a touch display device according to an embodiment of the present disclosure is formed in a closed - loop structure;

[0033] Figure 13 and Figure 14 is a view showing Figure 12 an enlarged view of region B. DETAILED DESCRIPTION

[0034] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. In the following description of examples or embodiments of the present disclosure, reference will be made to the drawings in which specific examples or embodiments that can be implemented are illustrated by way of illustration, and in the drawings, the same reference numerals and symbols may be used to denote the same or similar components even if they are shown in different drawings. Additionally, in the following description of examples or embodiments of the present disclosure, when it is determined that a detailed description of well - known functions and components incorporated herein may make the subject matter in some embodiments of the present disclosure rather unclear, the detailed description will be omitted. Terms such as "including", "having", "containing", "constituting", "comprising", "forming" are generally intended to allow the addition of other components, unless the term is used together with the term "only". As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0035] Terms such as "first", "second", "A", "B", "(A)", or "(B)" may be used herein to describe elements of the present disclosure. Each of these terms does not define the essence, order, sequence, or quantity, etc. of the element, but is only used to distinguish the corresponding element from other elements.

[0036] When it is mentioned that a first element is "connected or coupled to" a second element, "in contact with or overlaps" the second element, etc., it should be construed that not only can the first element be "directly connected or coupled to" the second element or "directly in contact with or overlap" the second element, but also a third element can be "interposed" between the first element and the second element, or the first element and the second element can be "connected or coupled", "in contact with or overlap" each other via a fourth element, etc. Here, the second element may be included in at least one of two or more elements that are "connected or coupled", "in contact with or overlap" each other, etc.

[0037] When relative terms of time, such as "after", "subsequently", "next", "before", etc., are used to describe a process or operation of an element or configuration, or a process or step in an operation, processing, or manufacturing method, these terms can be used to describe a non - continuous or non - sequential process or operation, unless the term is used together with the terms "directly" or "immediately".

[0038] In addition, when referring to any dimension, relative size, etc., even if no relevant description is specified, the numerical value of an element or feature, or the corresponding information (e.g., level, range, etc.) should be considered to include the tolerance or error range that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). Additionally, the term "may" fully encompasses all meanings of the term "can".

[0039] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0040] Figure 1 is a view schematically showing the configuration of a touch display device according to an embodiment.

[0041] Referring to Figure 1 , a touch display device 100 according to an embodiment of the present disclosure may include a display panel 110, a data driving circuit 130, a gate driving circuit 120, and a timing controller 140 as components for displaying an image.

[0042] The display panel 110 may include a display area DA for displaying an image and a non - display area NDA for not displaying an image.

[0043] The non - display area NDA may be an external area of the display area DA and is referred to as a border area. The non - display area NDA may be an area visible from the front of the touch display device 100, or may be curved and not visible from the front of the touch display device 100.

[0044] The display panel 110 may include a plurality of sub - pixels SP. For example, the touch display device 100 may be various types of display devices including a liquid crystal display device, an organic light - emitting display device, a micro - light - emitting diode (micro LED) display device, and a quantum dot display device.

[0045] The structure of each of the plurality of sub - pixels SP may vary according to the type of the touch display device 100. For example, when the touch display device 100 is a self - emitting display device in which the sub - pixel SP itself emits light, each sub - pixel SP may include a light - emitting element that emits light itself, one or more transistors, and one or more capacitors.

[0046] The display panel 110 may also include various types of signal lines to drive a plurality of sub-pixels SP. For example, the various types of signal lines may include a plurality of data lines DL for transmitting data signals (also referred to as data voltages or image data) and a plurality of gate lines GL for transmitting gate signals (also referred to as scan signals).

[0047] The plurality of data lines DL and the plurality of gate lines GL may cross each other. Each of the plurality of data lines DL may be arranged to extend in the column direction. Each of the plurality of gate lines GL may be arranged to extend in the row direction.

[0048] Here, the column direction and the row direction are relative. For example, the column direction may be the vertical direction and the row direction may be the horizontal direction. As another example, the column direction may be the horizontal direction and the row direction may be the vertical direction.

[0049] The data driving circuit 130 is a circuit for driving the plurality of data lines DL and may output data signals to the plurality of data lines DL. The gate driving circuit 120 is a circuit for driving the plurality of gate lines GL and may supply gate signals to the plurality of gate lines GL.

[0050] The timing controller 140 is a device for controlling the data driving circuit 130 and the gate driving circuit 120 and may control the driving timings of the plurality of data lines DL and the plurality of gate lines GL.

[0051] The timing controller 140 may supply various types of data driving control signals DCS to the data driving circuit 130 to control the data driving circuit 130 and may supply various types of gate driving control signals GCS to the gate driving circuit 120 to control the gate driving circuit 120.

[0052] The data driving circuit 130 may supply data signals to the plurality of data lines DL according to the driving timing control performed by the timing controller 140. The data driving circuit 130 may receive digital image data DATA from the timing controller 140 and may convert the received image data DATA into an analog data signal and output it to the plurality of data lines DL.

[0053] The gate driving circuit 120 may supply gate signals to the plurality of gate lines GL according to the timing control of the timing controller 140. The gate driving circuit 120 may receive a first gate voltage corresponding to the conduction level voltage, a second gate voltage corresponding to the cut-off level voltage, and various gate driving control signals GCS, generate a gate signal, and supply the generated gate signal to the plurality of gate lines GL. The conduction level voltage may be a high level voltage and the cut-off level voltage may be a low level voltage. Conversely, the conduction level voltage may be a low level voltage and the cut-off level voltage may be a high level voltage.

[0054] The gate driving circuit 120 may include one or more gate driving integrated circuits (GDICs). Depending on the driving scheme, the gate driving circuit 120 may be arranged on only one side of the display panel 110 or on each of opposite sides. The gate driving circuit 120 may be implemented in an in-panel gate (GIP) type in which the gate driving circuit 120 is directly formed in the non-display area NDA of the display panel 110.

[0055] To provide a touch sensing function as well as an image display function, the touch display device 100 may include a touch screen panel and a touch circuit 150 that senses the touch screen panel to detect whether a touch object (e.g., a finger or a pen) touches or the position of the touch.

[0056] The touch circuit 150 may include a touch driving circuit 152 that drives and senses the touch screen panel and generates and outputs touch sensing data, and a touch controller 154 that may detect the occurrence of a touch or the position of the touch using the touch sensing data.

[0057] The touch screen panel may include a plurality of touch electrodes TE as touch sensors. The touch screen panel may also include a plurality of touch lines TL for electrically connecting the plurality of touch electrodes TE and the touch driving circuit 152. The touch screen panel or the touch electrodes TE are also referred to as touch sensors.

[0058] The touch screen panel may be present outside or inside the display panel 110. When the touch screen panel is present outside the display panel 110, the touch screen panel is referred to as an external type touch screen panel. When the touch screen panel is of the external type, the touch screen panel and the display panel 110 may be manufactured separately or may be combined. The external type touch screen panel may include a substrate and a plurality of touch electrodes TE on the substrate.

[0059] When the touch screen panel is present inside the display panel 110, the touch screen panel is referred to as an internal type touch screen panel. In the internal type touch screen panel, the touch screen panel may be formed in the display panel 110 during the manufacturing process of the display panel 110.

[0060] The touch driving circuit 152 may supply a touch driving signal to at least one of the plurality of touch electrodes TE and detect a touch sensing signal transmitted from at least one of the plurality of touch electrodes TE to generate touch sensing data.

[0061] The touch circuit 150 may perform touch sensing in a self-capacitance sensing mode or a mutual-capacitance sensing mode.

[0062] When the touch circuit 150 performs touch sensing in a self-capacitance sensing mode, the touch circuit 150 may perform touch sensing based on the capacitance between each touch electrode TE and a touch object (e.g., a finger or a pen).

[0063] When the touch circuit 150 performs touch sensing in a mutual capacitance sensing method, the touch circuit 150 may perform touch sensing based on the capacitance between the touch electrodes TE.

[0064] According to the mutual capacitance sensing method, a plurality of touch electrodes TE are divided into driving touch electrodes and sensing touch electrodes. The touch driving circuit 152 may drive the driving touch electrodes by a touch driving signal and may detect a touch sensing signal from the sensing touch electrodes.

[0065] According to the self-capacitance sensing method, each of the plurality of touch electrodes TE may serve as both a driving touch electrode and a sensing touch electrode. The touch driving circuit 152 may drive all or a part of the plurality of touch electrodes TE and may sense all or a part of the plurality of touch electrodes TE.

[0066] The touch driving circuit 152 and the touch controller 154 may be implemented as separate devices or as a single device.

[0067] Alternatively, the touch driving circuit 152 and the data driving circuit 130 may be implemented as separate integrated circuits. Alternatively, all or part of the touch driving circuit 152 and all or part of the data driving circuit 130 may be integrated into a single integrated circuit.

[0068] The touch display device 100 according to an embodiment of the present disclosure may be a self-emissive display device having self-emissive light-emitting elements provided on the display panel 110, such as an organic light-emitting display device, a quantum dot display device, a micro LED display device, etc.

[0069] Figure 2 is a view showing an example touch sensing system of a touch display device according to an embodiment of the present disclosure.

[0070] Referring to Figure 2 FIG. [Reference numeral], the touch display device 100 according to an embodiment of the present disclosure is a display device that can provide not only an image display function but also a touch sensing function for a passive stylus (e.g., a finger) and a touch sensing function (stylus recognition function) for an active stylus (e.g., a pen).

[0071] The touch display device 100 according to an embodiment of the present disclosure is a display device in which a touch screen panel TSP including a plurality of touch electrodes TE as touch sensors is built into the display panel 110, and may be a television (TV), a monitor, or a mobile device, such as a tablet PC, a smart phone, etc.

[0072] For example, the touch display device 100 may divide the common electrode used during the display period into multiple blocks and use it as the touch electrode TE.

[0073] As another example, the touch display device 100 may use multiple touch electrodes TE composed of touch sensing electrodes and touch driving electrodes.

[0074] The display panel 110 may be various types of panels, such as a liquid crystal display panel or an organic light emitting display panel.

[0075] For example, when the display panel 110 is a liquid crystal display panel, the touch display device 100 may divide the common electrode that receives a common voltage to form an electric field with the pixel electrode into multiple blocks and use it as multiple touch electrodes TE.

[0076] As another example, when the display panel 110 is an organic light emitting diode panel, the touch display device 100 may include: a first electrode, an organic light emitting layer, and a second electrode that constitute the organic light emitting diode; a encapsulation layer located thereon to provide an encapsulation function; and a touch sensor metal layer located thereon. Multiple touch electrodes TE may be formed on the touch sensor metal layer.

[0077] In the following description, for ease of description, it is assumed that multiple touch electrodes TE are used as touch sensors during the touch driving process and as common electrodes during the display driving process.

[0078] The touch display device 100 may include a touch circuit 150 that performs touch sensing and stylus sensing according to signals received through the display panel 110 by driving the display panel 110 with a built-in touch screen panel TSP.

[0079] The touch circuit 150 may include a first circuit for driving the display panel 110 to receive signals through the display panel 110 and a second circuit for performing passive touch sensing (finger touch sensing) and active touch sensing using the signals received through the display panel 110.

[0080] The first circuit is referred to as the touch driving circuit 152, and the second circuit is referred to as the touch controller 154.

[0081] The touch driving circuit 152 and the data driving circuit 130 for driving the data lines may be implemented as an integrated driving circuit together.

[0082] The touch driving circuit 152 may be of the chip on film (COF) type mounted on the source film SF.

[0083] The source film SF on which the touch driving circuit 152 is mounted can be coupled to each of the bonding unit of the display panel 110 and the bonding unit of the printed circuit board (PCB).

[0084] The touch controller can be mounted on the printed circuit board (PCB).

[0085] The touch driving circuit 152 and the data driving circuit 130 can be integrated in a separate integrated driving circuit. The touch driving circuit 152 can be electrically connected to a plurality of touch electrodes TE constituting the display panel 110 through a plurality of touch lines.

[0086] In this case, the touch driving circuit 152 can perform touch sensing in a time-division touch driving period separate from the display period. The touch period for performing touch sensing can be performed simultaneously with the display driving period.

[0087] Figure 3 It is a view schematically showing a touch electrode structure for mutual capacitance-based touch sensing in a touch display device according to an embodiment of the present disclosure.

[0088] Referring to Figure 3 , the touch electrode structure for mutual capacitance-based touch sensing in the touch display device 100 according to an embodiment of the present disclosure can include a plurality of X touch electrode lines X-TEL and a plurality of Y touch electrode lines Y-TEL. The plurality of X touch electrode lines X-TEL and the plurality of Y touch electrode lines Y-TEL can be located on the encapsulation layer ENCAP.

[0089] Each of the plurality of X touch electrode lines X-TEL can be arranged in a first direction, and each of the plurality of Y touch electrode lines Y-TEL can be arranged in a second direction different from the first direction.

[0090] In the present disclosure, the first direction and the second direction can be relatively different directions. As an example, the first direction can be the x-axis direction, and the second direction can be the y-axis direction. Conversely, the first direction can be the y-axis direction, and the second direction can be the x-axis direction. The first direction and the second direction can be perpendicular to each other or not perpendicular to each other. In the present disclosure, row and column are relative terms, and from a certain perspective, the terms "row" and "column" can be used interchangeably.

[0091] Each of the X touch electrode lines X-TEL can be composed of a plurality of X touch electrodes electrically connected to each other. Each of the Y touch electrode lines Y-TEL can be composed of a plurality of Y touch electrodes electrically connected to each other.

[0092] The plurality of X touch electrodes and the plurality of Y touch electrodes are included in the plurality of touch electrodes TE and their functions are distinguishable.

[0093] For example, multiple X touch electrodes that respectively form multiple X touch electrode lines X-TEL can be driving touch electrodes, and multiple Y touch electrodes that respectively form multiple Y touch electrode lines Y-TEL can be sensing touch electrodes. In this case, each of the multiple X touch electrode lines X-TEL corresponds to a driving touch electrode line, and each of the multiple Y touch electrode lines Y-TEL corresponds to a sensing touch electrode line.

[0094] Conversely, multiple X touch electrodes that respectively form multiple X touch electrode lines X-TEL can be sensing touch electrodes, and multiple Y touch electrodes that respectively form multiple Y touch electrode lines Y-TEL can be driving touch electrodes. In this case, each of the multiple X touch electrode lines X-TEL corresponds to a sensing touch electrode line, and each of the multiple Y touch electrode lines Y-TEL corresponds to a driving touch electrode line.

[0095] The touch sensor metal for touch sensing can include multiple touch lines TL, multiple X touch electrode lines X-TEL, and multiple Y touch electrode lines Y-TEL.

[0096] The multiple touch lines TL can include multiple X touch lines X-TL respectively connected to the multiple X touch electrode lines X-TEL and multiple Y touch lines Y-TL respectively connected to the multiple Y touch electrode lines Y-TEL.

[0097] Figure 4 It is a view showing an example equivalent circuit of sub-pixels constituting a display panel in a touch display device according to an embodiment of the present disclosure.

[0098] Refer to Figure 4 , in a touch display device 100 according to an embodiment of the present disclosure, each of the multiple sub-pixels SP can include a light-emitting element ED, a driving transistor DRT for driving the light-emitting element ED, a switching transistor SWT for switching the electrical connection between the gate of the driving transistor DRT and a data line DL, and a storage capacitor Cst electrically connected between the gate of the driving transistor DRT and the source or drain of the driving transistor DRT.

[0099] The gate of the driving transistor DRT corresponds to the first node N1. The source or drain of the driving transistor DRT corresponds to the second node N2. The drain or source of the driving transistor DRT corresponds to the third node N3.

[0100] The light-emitting element ED may include an anode AE, a light-emitting layer EL, and a cathode CE. The light-emitting layer EL may be located on the cathode CE, and the anode AE may be located on the light-emitting layer EL. For example, the light-emitting element ED is a device for self-luminous display and may include an organic light-emitting diode (OLED), a light-emitting element formed of quantum dots, or a micro light-emitting diode (micro LED).

[0101] The anode AE may be referred to as a pixel electrode, and the cathode CE may be referred to as a common electrode.

[0102] The drain or source of the switching transistor SWT may be electrically connected to the data line DL. The source or drain of the switching transistor SWT may be electrically connected to the gate of the driving transistor DRT at the first node N1. The gate of the switching transistor SWT may be electrically connected to the scan signal line SCL (which is a type of gate line GL). The on / off of the switching transistor SWT may be controlled by the scan signal SCAN supplied from the scan signal line SCL.

[0103] The storage capacitor Cst may be electrically connected between the first node N1 and the second node N2. The storage capacitor Cst may be used to maintain the voltage difference between the first node N1 and the second node N2 for a predetermined period (e.g., one frame time). The storage capacitor Cst is not an internal capacitor (parasitic capacitor) of the driving transistor DRT, but an externally designed capacitor intentionally used to drive the sub-pixel SP.

[0104] It has been described above that each sub-pixel SP includes a light-emitting element ED, two transistors DRT and SWT, and one capacitor Cst, but each sub-pixel SP may also include one or more transistors and, in some cases, one or more capacitors.

[0105] For example, as Figure 3 shown, each sub-pixel SP may also include a sensing transistor SENT for controlling the connection between the second node N2 and the reference voltage line RVL.

[0106] The drain or source of the sensing transistor SENT may be electrically connected to the reference voltage line RVL. The source or drain of the sensing transistor SENT may be electrically connected to the source or drain of the driving transistor DRT at the second node N2 and may also be electrically connected to the anode AE. The gate of the sensing transistor SENT may be electrically connected to the sensing signal line SENL (which is a type of gate line GL). The on / off of the sensing transistor SENT may be controlled by the sensing signal SENSE supplied from the sensing signal line SENL.

[0107] The anode AE can be disposed in each of the plurality of sub-pixels SP and can be electrically connected to the source or drain of the driving transistor DRT. In other words, at the second node N2, the anode AE can be electrically connected to the source or drain of the driving transistor DRT.

[0108] The third node N3 can be electrically connected to the driving voltage line DVL to which a high-level driving voltage EVDD is applied and can correspond to the drain or source of the driving transistor DRT.

[0109] In this case, during the display driving period, the high-level driving voltage EVDD necessary for displaying an image can be supplied to the driving voltage line DVL. For example, the high-level driving voltage EVDD necessary for displaying an image can be 27V.

[0110] The driving transistor DRT is turned on by the voltage difference between the first node N1 and the third node N3 to supply a driving current to the light-emitting element ED.

[0111] The cathode CE can be commonly disposed in the plurality of sub-pixels SP. A direct current (DC) level base voltage EVSS without voltage level change can be applied to the cathode CE. Here, the base voltage EVSS can correspond to the common voltage commonly applied to the light-emitting elements ED of all the sub-pixels SP.

[0112] In the touch display device 100 according to an embodiment of the present disclosure, the display panel 110 may further include a plurality of base voltage lines EVSL electrically connected to the cathode CE.

[0113] When a plurality of base voltage lines EVSL are used, the base voltage EVSS can be uniformly applied to the entire area of the cathode CE. The method of supplying the base voltage EVSS using the plurality of base voltage lines EVSL can have the effect of effectively supplying the base voltage EVSS when a large-area cathode CE is provided due to the large-area display panel 110.

[0114] The touch driving circuit 152 may include one or more pre-amplifiers PRE-AMP. The pre-amplifier PRE-AMP may include a non-inverting input terminal IN to which a touch driving signal TDS is input, an inverting input terminal INR electrically connected to the touch electrode TE, an output terminal OUT for outputting an output signal, and a feedback capacitor Cfb connected between the non-inverting input terminal IN and the output terminal OUT.

[0115] In the touch display device 100 according to an embodiment of the present disclosure, since a partial area of the touch electrode TE is formed to overlap a partial area of the anode AE above or below the anode AE, the area of the touch electrode TE can be increased and the touch performance can be improved.

[0116] Therefore, the inverting input terminal INR of the preamplifier PRE-AMP can be electrically connected to the touch electrode TE formed at a position where it overlaps with the anode AE of the light-emitting element ED in a partial region thereof.

[0117] The touch drive signal TDS applied to the non-inverting input terminal IN of the preamplifier PRE-AMP can be a signal whose voltage level changes and can have a predetermined frequency and amplitude.

[0118] When a user touches the screen with a finger or a pen, a capacitance Cf can be formed between the touch electrode TE and the finger or the pen. The capacitance Cf is referred to as the finger capacitance Cf.

[0119] The touch display device 100 can be used for mobile devices such as smartphones or tablet computers and for displays for vehicles, and in this case, an antenna can be used for the touch display device 100 to communicate with another device.

[0120] In this case, in the touch display device 100 using an antenna, due to electromagnetic interference with the touch drive signal transmitted through the touch electrode line TEL during the process of transmitting / receiving wireless signals in the high-frequency band, the transmission / reception performance of the wireless signal and the touch sensing performance may be reduced.

[0121] To solve this problem, the touch display device 100 according to the present disclosure can arrange a pseudo-touch electrode line capable of canceling electromagnetic noise caused by wireless signals or the like in the non-display area NDA.

[0122] Figure 5 is a view showing an example structure in which a pseudo-touch electrode line is provided in a touch display device according to an embodiment of the present disclosure.

[0123] Refer to Figure 5 According to an embodiment of the present disclosure, the touch display device 100 can include a plurality of X touch electrode lines X-TEL and a plurality of Y touch electrode lines Y-TEL provided in the display area DA of the display panel 110, and a pseudo-touch electrode line P-TEL provided in the non-display area NDA.

[0124] Here, for ease of description, an example is shown in which a touch drive signal is applied through 30 X touch electrode lines X-TEL1 to X-TEL30 provided in the display area DA in a first direction, and a pseudo-touch drive signal is applied through the pseudo-touch electrode line P-TEL provided in the non-display area in a direction parallel to the X touch electrode line X-TEL. In this case, the first X touch electrode line X-TEL1 can be provided at the position farthest from the touch circuit 150, and the 30th X touch electrode line X-TEL30 can be provided at the position closest to the touch circuit 150.

[0125] Each of the 30 X-touch electrode lines X-TEL1 to X-TEL30 is electrically connected to a corresponding X-touch pad X-TP through an X-touch line X-TL. For example, the first X-touch line may be connected to the first X-touch electrode line X-TEL1, and the 30th X-touch line may be connected to the 30th X-touch electrode line X-TEL30. In this case, the X-touch electrodes provided at the outermost portions among the plurality of X-touch electrodes included in one X-touch electrode line X-TEL may be electrically connected to the corresponding X-touch pads X-TP through the X-touch lines X-TL.

[0126] One or more pseudo-touch electrode lines P-TEL provided in the non-display area may be provided in parallel with the X-touch electrode lines X-TEL1 to X-TEL30 to which a touch driving signal is supplied. In this case, one pseudo-touch electrode line P-TEL is electrically connected to a corresponding pseudo-touch pad P-TP through a pseudo-touch line P-TL. In this case, the number of the pseudo-touch lines P-TL may be smaller than the number of the X-touch lines X-TL, and the line width of the pseudo-touch lines P-TL may be larger than the line width of the X-touch lines X-TL.

[0127] By applying a pseudo-touch driving signal having a phase opposite to that of the touch driving signal supplied through the plurality of X-touch electrode lines X-TEL1 to X-TEL30 to the pseudo-touch electrode lines P-TEL located in the non-display area NDA, electromagnetic interference caused by the touch driving signal can be canceled.

[0128] In this case, one pseudo-touch electrode line P-TEL may be connected to one pseudo-touch line P-TL. Alternatively, a plurality of pseudo-touch electrode lines P-TEL spaced apart at regular intervals may be connected to one pseudo-touch line P-TL, thereby effectively reducing electromagnetic noise caused by wireless signals or the like.

[0129] Figure 6 is a view showing example waveforms of a touch driving signal applied to a plurality of touch electrode lines and a pseudo-touch driving signal applied to a pseudo-touch electrode line in a touch display device according to an embodiment of the present disclosure.

[0130] Refer to Figure 6 , in the touch display device 100 according to an embodiment of the present disclosure, a plurality of X-touch electrode lines X-TEL may be provided in the display area DA of the display panel 110. Here, an example in which 30 X-touch electrode lines X-TEL1 to X-TEL30 are provided is described.

[0131] When 30 X-touch electrode lines X-TEL1 to X-TEL30 are provided in the display area DA of the display panel 110, pulsed touch driving signals TDS1 to TDS30 can be applied to the 30 X-touch electrode lines X-TEL1 to X-TEL30 at different times.

[0132] In this case, a pseudo-touch driving signal P-TDS having a phase opposite to that of the touch driving signals TDS1 to TDS30 can be applied to the pseudo-touch electrode line P-TEL.

[0133] Here, an example is shown in which one pseudo-touch line P-TL or one pseudo-touch electrode line P-TEL corresponds to the 30 X-touch electrode lines X-TEL1 to X-TEL30, and the number of the pseudo-touch lines P-TL or the pseudo-touch electrode lines P-TEL can be formed differently.

[0134] As described above, the pseudo-touch driving signal P-TDS having a phase opposite to that of the touch driving signals TDS1 to TDS30 supplied through the plurality of X-touch electrode lines X-TEL1 to X-TEL30 can be applied through the pseudo-touch lines P-TL and the pseudo-touch electrode lines P-TEL located in the non-display area, thereby canceling the electromagnetic noise caused by the touch driving signal TDS.

[0135] In this case, the pseudo-touch lines P-TL and the pseudo-touch electrode lines P-TEL are provided in the non-display area corresponding to the outer periphery of the display panel 110, while the plurality of touch electrode lines X-TEL1 to X-TEL30 are provided in parallel in the display area DA of the display panel 110.

[0136] Accordingly, the pseudo-touch driving signal P-TDS transmitted through the pseudo-touch line P-TL and the touch driving signals TDS1 to TDS30 transmitted through the X-touch line X-TL may differ in signal delay due to the resistance-capacitance (RC) value.

[0137] Figure 7 is a view showing an example signal delay between a touch driving signal and a pseudo-touch driving signal in a touch display device according to an embodiment of the present disclosure.

[0138] Refer to Figure 7 , in the touch display device 100 according to an embodiment of the present disclosure, for example, 30 X-touch electrode lines X-TEL1 to X-TEL30 may be arranged side by side in the display area DA of the display panel 110 in a first direction.

[0139] In addition, the pseudo-touch lines P-TL and the pseudo-touch electrode lines P-TEL may be provided in the non-display area corresponding to the outer periphery of the display panel 110.

[0140] In this case, the first touch driving signals TDS1 to the 30th touch driving signal TDS30 can be applied to 30 X touch electrode lines X-TEL1 to X-TEL30 arranged in the first direction in the display area DA.

[0141] Since the 30th X touch electrode line X-TEL30 to which the 30th touch driving signal TDS30 is applied is arranged at the position closest to the touch circuit 150, the 30th touch driving signal TDS30 hardly causes signal delay or causes very little signal delay.

[0142] On the other hand, since the first X touch electrode line X-TEL1 to which the first touch driving signal TDS1 is applied is arranged at the position farthest from the touch circuit 150, a significant time delay is caused.

[0143] At the same time, since the dummy touch line P-TL to which the dummy touch driving signal P-TDS is applied has a large line width, the dummy touch driving signal P-TDS transmitted through the dummy touch line P-TL does not cause signal delay or causes very little signal delay.

[0144] Therefore, the signal delay deviation between the first touch driving signal TDS1 transmitted through the first X touch line X-TL1 connected to the farthest position of the touch circuit 150 and the dummy touch driving signal P-TDS is the largest.

[0145] The touch display device 100 according to the present disclosure can reduce the resistance of the X touch line connected to the position far from the touch circuit 150, thereby reducing the signal delay deviation between the dummy touch driving signal P-TDS and the touch driving signal, and thus effectively canceling electromagnetic noise.

[0146] Figure 8 It is a view showing an example structure of a touch line and a dummy touch line provided in a non-display area in a touch display device according to an embodiment of the present disclosure. Figure 9 and Figure 10 is a view showing Figure 8 an enlarged view of area A of

[0147] Referring to Figures 8 to 10 , the touch display device 100 according to an embodiment of the present disclosure may include a plurality of X touch electrode lines X-TEL1 to X-TEL30 and a plurality of Y touch electrode lines (not shown) provided in the display area DA of the display panel 110, and a dummy touch electrode line P-TEL provided in the non-display area NDA.

[0148] Touch driving signals are applied to each of the plurality of X touch electrode lines X-TEL1 to X-TEL30 through a plurality of X touch lines X-TL extending along the non-display area from the touch driving circuit 152 mounted on the source film SF.

[0149] In other words, a first touch driving signal is applied to a first X touch electrode line X-TEL1 through a first X touch line X-TL1, and a 30th touch driving signal is applied to a 30th touch electrode line X-TEL30 through a 30th X touch line X-TL30.

[0150] In this case, the X touch line X-TL may be set to connect from the left side to the right side of the lower non-display area of the display panel 110. In this case, one touch driving signal transmitted through the X touch line X-TL may be supplied to both the left and right sides of the X touch electrode line X-TEL. Thus, a structure in which the touch driving signal is simultaneously applied to opposite sides of the X touch electrode line X-TEL may be referred to as a multi-feed structure. In the multi-feed structure, since the touch driving signal is simultaneously applied to opposite sides of the X touch electrode line, the touch driving signal can be stably transmitted and the touch sensing performance can be enhanced.

[0151] Meanwhile, the number of pseudo-touch lines P-TL may be less than the number of X touch lines X-TL, and the line width of the pseudo-touch line P-TL may be greater than the line width of the X touch line X-TL.

[0152] By applying a pseudo-touch driving signal having a phase opposite to that of the touch driving signal supplied through the plurality of X touch electrode lines X-TEL1 to X-TEL30 to the pseudo-touch electrode line P-TEL located in the non-display area NDA, electromagnetic interference caused by the touch driving signal can be cancelled out.

[0153] Here, the first X touch electrode line X-TEL1 may be set at the position farthest from the touch circuit 150, and the 30th X touch electrode line X-TEL30 may be set at the position closest to the touch circuit 150.

[0154] In this case, in order to reduce the deviation of the signal delay of the touch driving signal TDS transmitted through the X touch line X-TL, the line width may be determined in such a way as to reduce the resistance component of the X touch line connected to a position far from the touch circuit 150.

[0155] For example, as Figure 9 shown, compared with the line width d30 of the 30th X touch line X-TL30 connected to the position closest to the touch circuit 150, the line width d29 of the 29th X touch line X-TL29 connected to a farther position will be greater. Thus, the line width d1 of the first X touch line X-TL1 connected to the position farthest from the touch circuit 150 may be formed to be the largest.

[0156] Accordingly, the X touch lines connected to positions farther from the touch circuit 150 can have a larger line width, so that the resistance component can be reduced, thereby reducing the signal delay caused by resistance-capacitance. Therefore, the signal delay deviation from the pseudo-touch drive signal P-TDS transmitted along the pseudo-touch line P-TL can be reduced, and the cancellation effect of electromagnetic noise can be enhanced.

[0157] Meanwhile, in order to reduce the resistance component of the X touch lines connected to positions far from the touch circuit 150, the line width can be increased, but the resistance component can be reduced by a double line.

[0158] For example, as Figure 10 shown, some of the X touch lines (e.g., X-TL26 to X-TL30) connected closer to the touch circuit 150 among the multiple X touch lines X-TL provided in the lower non-display area of the display panel 110 are formed as single metal lines ML1. The X touch lines formed by the single metal lines ML1 can be referred to as a single touch line group.

[0159] On the other hand, other X touch lines (e.g., X-TL1 to X-TL5) connected far from the touch circuit 150 are formed as a double line of a first metal line ML1 and a second metal line ML2. The touch line group formed as a double line can be referred to as a double touch line group. The first metal line ML1 and the second metal line ML2 can be insulated by an insulating film ILD, and partial regions thereof can be connected to contact holes CH.

[0160] As described above, when some of the X touch lines (e.g., X-TL1 to X-TL5) connected far from the touch circuit 150 are formed by double metal lines, the resistance is lower than that of other X touch lines connected closer to the touch circuit 150, so that the signal delay of the touch drive signal can be reduced.

[0161] Figure 11A And Figure 11B are views showing measurement values of the comparison of electromagnetic interference and signal delay according to the line width of the touch lines provided in the non-display area at the lower end of the display panel in a touch display device according to an embodiment of the present disclosure.

[0162] Referring to Figure 11A and Figure 11B , in a touch display device according to an embodiment of the present disclosure, the X touch lines connected to positions far from the touch circuit 150 can be formed to have a larger line width or can be formed as a double line.

[0163] Accordingly, the signal delay of the touch drive signal transmitted from the touch circuit 150 to a distant position can be reduced ( Figure 11A ), and the cancellation effect of electromagnetic interference can be enhanced ( Figure 11B ).

[0164] Meanwhile, in the touch display device 100 of the present disclosure, the X touch lines X-TL may be formed in a closed-loop structure in the non-display area at the lower end of the display panel 110.

[0165] Figure 12 FIG. is a view showing an example in which the X touch lines provided in the non-display area in the touch display device according to an embodiment of the present disclosure are formed in a closed-loop structure. Figure 13 and Figure 14 is a view showing Figure 12 an enlarged view of area B of

[0166] Referring to Figures 12 to 14 , the touch display device 100 according to an embodiment of the present disclosure may include a plurality of X touch electrode lines X-TEL1 to X-TEL30 and a plurality of Y touch electrode lines (not shown) provided in the display area DA of the display panel 110, and a pseudo-touch electrode line P-TEL provided in the non-display area NDA.

[0167] Touch drive signals are applied to each of the plurality of X touch electrode lines X-TEL1 to X-TEL30 through the plurality of X touch lines X-TL extending along the non-display area from the touch drive circuit 152 mounted on the source film SF.

[0168] In other words, a first touch drive signal is applied to the first X touch electrode line X-TEL1 through the first X touch line X-TL1, and a 30th touch drive signal is applied to the 30th X touch electrode line X-TEL30 through the 30th X touch line X-TL30.

[0169] In this case, the X touch lines X-TL may be arranged to connect from the left side to the right side in the lower non-display area of the display panel 110. In this case, one touch drive signal transmitted through the X touch lines X-TL may be supplied to both the left and right sides of the X touch electrode lines X-TEL. Thus, a structure in which touch drive signals are simultaneously applied to opposite sides of the X touch electrode lines X-TEL may be referred to as a multi-feed structure. In the multi-feed structure, since touch drive signals are simultaneously applied to opposite sides of the X touch electrode lines, touch drive signals can be stably transmitted and touch sensing performance can be enhanced.

[0170] In addition, the X touch lines X-TL provided in the non-display area at the lower end of the display panel 110 may include a first group of X touch lines X-1TL located below the Y touch lines Y-TL and a second group of X touch lines X-2TL located above the Y touch lines Y-TL. The first group of X touch lines X-1TL and the second group of X touch lines X-2TL may be connected to each other and form a closed loop.

[0171] Meanwhile, the number of pseudo-touch lines P-TL can be less than the number of X-touch lines X-TL, and the line width of the pseudo-touch lines P-TL can be greater than the line width of the X-touch lines X-TL.

[0172] By applying a pseudo-touch driving signal having a phase opposite to that of the touch driving signal supplied through the plurality of X-touch electrode lines X-TEL1 to X-TEL30 to the pseudo-touch electrode line P-TEL located in the non-display area NDA, electromagnetic interference caused by the touch driving signal can be cancelled out.

[0173] The first group of X-touch lines X-1TL may include a first X-touch line X-1TL1 connected to the first X-touch electrode line X-TEL1 that is the farthest from the touch circuit 150 and a 30th X-touch line X-1TL30 connected to the 30th X-touch electrode line X-TEL30 that is the closest to the touch circuit 150.

[0174] Similarly, the second group of X-touch lines X-2TL may include a first X-touch line X-2TL1 connected to the first X-touch electrode line X-TEL1 that is the farthest from the touch circuit 150 and a 30th X-touch line X-2TL30 connected to the 30th X-touch electrode line X-TEL30 that is the closest to the touch circuit 150.

[0175] The first X-touch line X-1TL1 belonging to the first group of X-touch lines X-1TL is connected to the first X-touch line X-2TL1 belonging to the second group of X-touch lines X-2TL, and the 30th X-touch line X-1TL30 belonging to the first group of X-touch lines X-1TL is connected to the 30th X-touch line X-2TL30 belonging to the second group of X-touch lines X-2TL.

[0176] In this case, in order to reduce the deviation of the signal delay of the touch driving signal TDS transmitted through the X-touch lines X-TL, the line width can be determined in such a way as to reduce the resistance component of the X-touch lines connected to positions far from the touch circuit 150.

[0177] For example, as Figure 13 shown, compared with the line width d30 of the 30th X-touch line X-1TL30 or X-2TL30 connected to the position closest to the touch circuit 150, the line width d29 of the 29th X-touch line X-1TL29 or X-2TL29 connected to a farther position is larger. In this way, the line width d1 of the first X-touch line X-1TL1 or X-2TL1 connected to the position farthest from the touch circuit 150 can be formed to be the largest.

[0178] Accordingly, the X touch lines connected to positions farther from the touch circuit 150 can have a larger line width, so that the resistance component can be reduced, thereby reducing the signal delay caused by resistance-capacitance. Therefore, the signal delay deviation from the pseudo-touch drive signal P-TDS transmitted along the pseudo-touch line P-TL can be reduced, and the cancellation effect of electromagnetic noise can be enhanced.

[0179] Meanwhile, in order to reduce the resistance component of the X touch lines connected to positions far from the touch circuit 150, the line width can be increased, but the resistance component can be reduced by using a double line.

[0180] For example, as Figure 14 shown, some of the X touch lines (e.g., X-TL26 to X-TL30) connected close to the touch circuit 150 in the first group of X touch lines X-1TL provided in the lower non-display area of the display panel 110 are formed as single metal lines ML1.

[0181] On the other hand, the other X touch lines (e.g., X-1TL1 to X-1TL5) connected far from the touch circuit 150 are formed as double metal lines of a first metal line ML1 and a second metal line ML2. The first metal line ML1 and the second metal line ML2 can be insulated by an insulating film ILD, and some of their regions can be connected to contact holes CH.

[0182] As described above, when some of the X touch lines (e.g., X-1TL1 to X-1TL5) connected far from the touch circuit 150 are formed as double lines, the resistance is lower than that of some other X touch lines (e.g., X-1TL26 to X-1TL30), so that the signal delay of the touch drive signal can be reduced.

[0183] This structure can also be applied to the second group of X touch lines X-2TL.

[0184] The embodiments of the present disclosure described above will be briefly described below.

[0185] A touch display device according to an embodiment of the present disclosure may include: a display panel including a plurality of touch electrode lines provided in a display area and at least one pseudo-touch electrode line provided in a non-display area; and a touch circuit that supplies a touch drive signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines and supplies a pseudo-touch drive signal having a phase opposite to that of the touch drive signal through a pseudo-touch line connected to the at least one pseudo-touch electrode line. At least a part of the plurality of touch lines can be formed to have different line widths according to the positions of the plurality of touch electrode lines.

[0186] At least a part of the plurality of touch lines can be formed to have different line widths in a non-display area adjacent to the touch circuit of the display panel.

[0187] At least a part of the plurality of touch lines can be formed to have a greater line width as the touch electrode lines connected thereto are farther from the touch circuit.

[0188] At least a part of the plurality of touch lines can include a single touch line group formed of a single metal wire and a double touch line group formed of a double metal wire.

[0189] The single touch line group can be connected to a first touch electrode line group close to the touch circuit, and the double touch line group can be connected to a second touch electrode line group farther than the first touch electrode line group.

[0190] The double metal wire can include a first metal wire, a second metal wire formed in a layer different from the first metal wire, an insulating film disposed between the first metal wire and the second metal wire, and a contact hole connecting the first metal wire and the second metal wire in a partial region.

[0191] The plurality of touch lines can be connected to opposite sides of the plurality of touch electrode lines to simultaneously apply a touch driving signal.

[0192] The plurality of touch lines can include a first group of touch lines on one side of the touch sensing line for receiving a touch sensing signal, and a second group of touch lines on the other side of the touch sensing line.

[0193] The first group of touch lines and the second group of touch lines can form a closed loop and be connected to each other.

[0194] The first group of touch lines and the second group of touch lines can be formed to have a greater line width as the touch electrode lines connected thereto are farther from the touch circuit.

[0195] At least one of the first group of touch lines and the second group of touch lines can include a single touch line group formed of a single metal wire, and a double touch line group formed of a double metal wire.

[0196] The single touch line group can be connected to a first touch electrode line group close to the touch circuit, and the double touch line group can be connected to a second touch electrode line group farther than the first touch electrode line group.

[0197] The non-display area can be an external area of the display area, and at least one pseudo-touch electrode line can be parallel to the plurality of touch electrode lines.

[0198] The number of pseudo-touch lines can be less than the number of touch lines, and the line width of the pseudo-touch lines can be greater than the line width of the touch lines.

[0199] A touch display device according to the present disclosure may include: a display panel including a plurality of touch electrode lines disposed in a display area and at least one dummy touch electrode line disposed in a non-display area; and a touch circuit that supplies touch driving signals through a plurality of touch lines respectively connected to the plurality of touch electrode lines, and supplies a dummy touch driving signal having a phase opposite to that of the touch driving signal through a dummy touch line connected to the at least one dummy touch electrode line. The plurality of touch lines may include a single touch line group formed of a single metal line and a double touch line group formed of a double metal line.

[0200] A display panel according to the present disclosure may include: a plurality of touch electrode lines disposed in a display area; at least one dummy touch electrode line disposed in a non-display area; a plurality of touch lines respectively connected to the plurality of touch electrode lines to transmit touch driving signals; and at least one dummy touch line connected to the at least one dummy touch electrode line to transmit a dummy touch driving signal having a phase opposite to that of the touch driving signal. At least a part of the plurality of touch lines may be formed to have different line widths according to the positions of the plurality of touch electrode lines.

[0201] The foregoing description has been presented to enable any person skilled in the art to make and use the inventive concept of the present disclosure, and the foregoing description 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 of ordinary skill in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. The above description and drawings provide examples of the inventive concept of the present disclosure for illustrative purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the inventive concept of the present disclosure.

Claims

1. A touch display device, comprising: The display panel includes a plurality of touch electrode lines arranged in a display area and at least one dummy touch electrode line arranged in a non-display area; as well as a touch circuit configured to supply a touch drive signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines, and supply a pseudo touch drive signal having a phase opposite to that of the touch drive signal through a pseudo touch line connected to the at least one pseudo touch electrode line, At least a portion of the plurality of touch lines is formed to have different line widths according to positions of the plurality of touch electrode lines.

2. The touch display device according to claim 1, wherein: At least a portion of the plurality of touch lines are formed to have different line widths in the non-display region of the display panel adjacent to the touch circuit.

3. The touch display device according to claim 1, wherein: At least a portion of the plurality of touch lines is formed to have a larger line width as a touch electrode line connected thereto is farther from the touch circuit.

4. The touch display device according to claim 1, wherein: At least a portion of the plurality of touch lines comprises: a single touch line group formed of a single metal line; and A double touch line set formed by a double metal line.

5. The touch display device according to claim 4, wherein: The single touch line group is connected to a first touch electrode line group close to the touch circuit, and The double touch line group is connected to a second touch electrode line group which is farther than the first touch electrode line group.

6. The touch display device according to claim 4, wherein: The bimetallic wire comprises: a first metal wire; a second metal line formed at a layer different from the first metal line; an insulating film provided between the first metal line and the second metal line; and The contact hole is configured to connect the first metal line and the second metal line in a partial region.

7. The touch display device according to claim 1, wherein: The plurality of touch lines are connected to opposite sides of the plurality of touch electrode lines to simultaneously apply the touch driving signals.

8. The touch display device according to claim 1, wherein: The plurality of touch lines include: a first group of touch lines located on one side of the touch sensing lines receiving the touch sensing signals; and A second group of touch lines is located on the other side of the touch sensing lines.

9. The touch display device according to claim 8, wherein: The first group of touch wires and the second group of touch wires form a closed loop and are connected to each other.

10. The touch display device according to claim 8, wherein: The first group of touch wires and the second group of touch wires are formed to have a larger line width as the touch electrode lines connected thereto are farther from the touch circuit.

11. The touch display device according to claim 8, wherein: At least one of the first group of touch wires and the second group of touch wires comprises: a single touch line group formed of a single metal line; and A double touch line set formed by a double metal line.

12. The touch display device according to claim 11, wherein: The single touch line group is connected to a first touch electrode line group close to the touch circuit, and The double touch line group is connected to a second touch electrode line group which is farther than the first touch electrode line group.

13. The touch display device according to claim 1, wherein: The non-display area is an outer area of ​​the display area, and the at least one dummy touch electrode line is parallel to the plurality of touch electrode lines.

14. The touch display device according to claim 1, wherein: The number of the dummy touch lines is smaller than the number of the touch lines, and the line width of the dummy touch lines is larger than the line width of the touch lines.

15. A touch display device, comprising: The display panel includes a plurality of touch electrode lines arranged in a display area and at least one dummy touch electrode line arranged in a non-display area; as well as a touch circuit configured to supply a touch drive signal through a plurality of touch lines respectively connected to the plurality of touch electrode lines, and supply a pseudo touch drive signal having a phase opposite to that of the touch drive signal through a pseudo touch line connected to the at least one pseudo touch electrode line, Wherein, the plurality of touch lines include: a single touch line group formed of a single metal line; and A double touch line set formed by a double metal line.

16. The touch display device according to claim 15, wherein: The single touch line group is connected to a first touch electrode line group close to the touch circuit, and The double touch line group is connected to a second touch electrode line group which is farther than the first touch electrode line group.

17. The touch display device according to claim 15, wherein: The non-display area is an outer area of ​​the display area, and the at least one dummy touch electrode line is parallel to the plurality of touch electrode lines.

18. The touch display device according to claim 15, wherein: The number of the dummy touch lines is smaller than the number of the touch lines, and the line width of the dummy touch lines is larger than the line width of the touch lines.

19. A display panel, comprising: A plurality of touch electrode lines are arranged in the display area; At least one dummy touch electrode line is arranged in the non-display area; A plurality of touch lines, respectively connected to the plurality of touch electrode lines to transmit touch drive signals; as well as at least one dummy touch line connected to the at least one dummy touch electrode line to transmit a dummy touch drive signal having a phase opposite to that of the touch drive signal, At least a portion of the plurality of touch lines is formed to have different line widths according to positions of the plurality of touch electrode lines.

20. The display panel according to claim 19, wherein: At least a portion of the plurality of touch lines are formed to have different line widths in the non-display area adjacent to a touch circuit connected to the plurality of touch lines and the at least one dummy touch line.

21. The display panel according to claim 19, wherein: At least a portion of the plurality of touch lines is formed to have a larger line width as the touch electrode line connected thereto is farther from a touch circuit connected to the plurality of touch lines and the at least one dummy touch line.

22. The display panel according to claim 19, wherein: At least a portion of the plurality of touch lines comprises: a single touch line group formed of a single metal line; and A double touch line set formed by a double metal line.

23. The display panel according to claim 22, wherein: The single touch line group is connected to a first touch electrode line group close to the touch circuit, and wherein the double touch line group is connected to a second touch electrode line group which is farther away than the first touch electrode line group, Wherein, the touch circuit is connected to the plurality of touch lines and the at least one dummy touch line.

24. The touch display device according to claim 19, wherein: The non-display area is an outer area of ​​the display area, and the at least one dummy touch electrode line is parallel to the plurality of touch electrode lines.

25. The touch display device according to claim 19, wherein: The number of the dummy touch lines is smaller than the number of the touch lines, and the line width of the dummy touch lines is larger than the line width of the touch lines.

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