Display device and display panel

Abstract

To allow for a narrow bezel.SOLUTION: A display device and a display panel may include: a substrate including a display region and a non-display region including a pad region located in a first direction from the display region; a first sensor electrode arranged in the display region and including a plurality of first sub-sensor electrodes arranged in a second direction crossing the first direction and at least one first bridge electrically connecting the plurality of first sub-sensor electrodes; a first pad arranged in the pad region; and a first touch routing wiring electrically connecting at least one of the plurality of first sub-sensor electrodes and the first pad. The plurality of first sub-sensor electrodes may be arranged in a first metal layer. The first bridge may be arranged in a second metal layer different from the first metal layer. The first touch routing wiring may include a metal arranged across the display region in the first direction, electrically connected to the first pad, and arranged in a third metal layer different from the first metal layer and the second metal layer.SELECTED DRAWING: Figure 2B

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device and a display panel.

Background Art

[0002] As the information society develops, the demands for display devices for displaying images have increased in various forms, and various display devices such as liquid crystal display devices and organic light emitting display devices are being utilized. Among such display devices, there are also display devices that can provide a touch-based input method that breaks away from normal input methods such as buttons, keyboards, and mice, and enables users to intuitively and conveniently input information or commands.

[0003] In recent years, due to various reasons such as design and product applications, numerous studies and developments have been conducted to reduce the size of the bezel (non-display area). However, there are considerable limitations in reducing the size of the bezel due to reasons such as the inevitable arrangement of various components (for example, various wirings and patterns) in the bezel.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments of the present disclosure can provide a display device and a display panel having a touch sensor structure that enables a narrow bezel.

[0005] Embodiments of the present disclosure can provide a display device and a display panel including a touch sensor that can provide high touch sensitivity while having a narrow bezel.

[0006] Embodiments of the present disclosure can provide a display device and a display panel including a touch sensor that can reduce noise between sensor electrodes.

[0007] Embodiments of the present disclosure can provide a display device and a display panel having a touch sensor laminate structure suitable for reducing the size of the bezel and enhancing touch sensitivity.

Means for Solving the Problem

[0008] The display device according to an embodiment of the present disclosure includes a substrate including a display area in which a plurality of sub-pixels are arranged and a non-display area including a pad area located in a first direction from the display area, a first sensor electrode disposed in the display area and including a plurality of first sub-sensor electrodes arranged in a second direction intersecting the first direction and at least one first bridge electrically connecting the plurality of first sub-sensor electrodes, a first pad disposed in the pad area, and a first touch routing wiring electrically connecting at least one of the plurality of first sub-sensor electrodes and the first pad.

[0009] The plurality of first sub-sensor electrodes can be disposed in a first metal layer. The first bridge can be disposed in a second metal layer different from the first metal layer.

[0010] The first touch routing wiring can be disposed across the display area in the first direction, electrically connected to the first pad, and include a metal disposed in a third metal layer different from the first metal layer and the second metal layer.

[0011] The first touch routing wiring can be of a single wiring type or a multi-wiring type.

[0012] For example, when the first touch routing wiring is of a single wiring type, the first touch routing wiring can include a metal disposed in the third metal layer.

[0013] For example, when the first touch routing wiring is of a multi-wiring type, the first touch routing wiring can include a first lower sub-wiring disposed in the second metal layer and a first upper sub-wiring disposed in the first metal layer. Here, the first lower sub-wiring and the first upper sub-wiring can be electrically connected to each other.

[0014] The display device according to an embodiment of the present disclosure may further include a second sensor electrode disposed in a display area, including a plurality of second sub-sensor electrodes arranged in a second direction and at least one second bridge for electrically connecting the plurality of second sub-sensor electrodes, a second pad disposed in a pad area, and a second touch routing wiring for electrically connecting at least one of the plurality of second sub-sensor electrodes and the second pad.

[0015] The second sensor electrode can be disposed closer to the pad area than the first sensor electrode.

[0016] The plurality of second sub-sensor electrodes can be disposed in a first metal layer. The second bridge can be disposed in a second metal layer.

[0017] The second touch routing wiring can be disposed across the display area in a first direction to be electrically connected to the second pad, and include a metal disposed in a third metal layer.

[0018] The first touch routing wiring may overlap at least one of the plurality of second sub-sensor electrodes.

[0019] The display device according to an embodiment of the present disclosure may further include a third sensor electrode disposed in a first direction and disposed between two adjacent first sub-sensor electrodes among the plurality of first sub-sensor electrodes, a third pad disposed in a pad area, and a third touch routing wiring for electrically connecting the third sensor electrode and the third pad.

[0020] The third sensor electrode can overlap with the first bridge.

[0021] The third touch routing wiring can include a metal disposed in a metal layer different from that of the first touch routing wiring. For example, the third touch routing wiring can include a metal disposed in a second metal layer.

[0022] The third touch routing wiring may be of a single wiring type or a multi-wiring type.

[0023] For example, when the third touch routing wiring is of a single wiring type, the third touch routing wiring may include metal disposed within the second metal layer.

[0024] For example, when the third touch routing wiring is of a multi-wiring type, the third touch routing wiring may include a third lower sub-wiring disposed within the second metal layer and a third upper sub-wiring disposed within the first metal layer. Here, the third lower sub-wiring and the third upper sub-wiring can be electrically connected to each other.

[0025] The third sensor electrode may overlap with the first touch routing wiring.

[0026] The display panel according to an embodiment of the present disclosure includes a substrate including a display area in which a plurality of sub-pixels are arranged and a non-display area including a pad area located in a first direction from the display area, a first touch interlayer insulating film on the substrate, a second touch interlayer insulating film on the first touch interlayer insulating film, a touch protection film on the second touch interlayer insulating film, a first metal layer between the second touch interlayer insulating film and the touch protection film, a second metal layer between the first touch interlayer insulating film and the second touch interlayer insulating film, a third metal layer on the substrate and the first touch interlayer insulating film, a plurality of first sub-sensor electrodes disposed within the first metal layer, a first sensor electrode including a first bridge that electrically connects the plurality of first sub-sensor electrodes disposed within the second metal layer, and a first touch routing wiring that is electrically connected to the first sensor electrode and includes metal disposed within the third metal layer and extends in the first direction within the display area.

[0027] The display panel according to an embodiment of the present disclosure may further include a second sensor electrode including a plurality of second sub-sensor electrodes disposed in a first metal layer and a second bridge disposed in a second metal layer and electrically connecting the plurality of second sub-sensor electrodes, and a second touch routing wire including a metal disposed in a third metal layer, electrically connected to the second sensor electrode, and extending in a first direction within a display area.

[0028] According to the internal touch routing structure, the first touch routing wire can overlap with the plurality of second sub-sensor electrodes.

[0029] The display panel according to an embodiment of the present disclosure may further include a third sensor electrode disposed in a first metal layer, a third touch routing wire including a metal disposed in a second metal layer different from the third metal layer and electrically connected to the third sensor electrode, a fourth sensor electrode including a plurality of fourth sub-sensor electrodes disposed in the first metal layer and a second bridge disposed in the second metal layer and electrically connecting the plurality of fourth sub-sensor electrodes, and a fourth touch routing wire including a metal disposed in the third metal layer, electrically connected to the fourth sensor electrode, and extending in a first direction within a display area.

[0030] The first sensor electrode, the second sensor electrode, and the fourth sensor electrode can intersect the third sensor electrode.

[0031] For example, the first sensor electrode, the second sensor electrode, and the fourth sensor electrode may be receiving sensor electrodes, and the third sensor electrode may be a transmitting sensor electrode.

[0032] As another example, the first sensor electrode, the second sensor electrode, and the fourth sensor electrode may be transmitting sensor electrodes, and the third sensor electrode may be a receiving sensor electrode.

[0033] The display panel according to an embodiment of the present disclosure may further include a first contact hole where the first sensor electrode is connected to the first touch routing wire and a second contact hole where the fourth sensor electrode is connected to the fourth touch routing wire.

[0034] For example, the first contact hole and the second contact hole are both located on one side of the third sensor electrode, and the first touch interlayer insulating film can include an inorganic film.

[0035] In this case, the third touch routing wiring and the fourth touch routing wiring may not overlap.

[0036] As another example, the first contact hole is located on one side of the third sensor electrode, the second contact hole is located on the other side of the third sensor electrode, and the first touch interlayer insulating film can include an organic film.

[0037] In this case, the third touch routing wiring and the fourth touch routing wiring can overlap.

Advantages of the Invention

[0038] According to the embodiments of the present disclosure, it is possible to provide a display device and a display panel having a touch sensor structure that enables a narrow bezel.

[0039] According to the embodiments of the present disclosure, it is possible to provide a display device and a display panel including a touch sensor that can provide high touch sensitivity while having a narrow bezel.

[0040] According to the embodiments of the present disclosure, it is possible to provide a display device and a display panel including a touch sensor capable of reducing the load deviation between sensor electrodes.

[0041] According to the embodiments of the present disclosure, it is possible to provide a display device and a display panel having a touch sensor laminate structure suitable for reducing the bezel size and enhancing the touch sensitivity.

[0042] According to the embodiments of the present disclosure, by significantly reducing the bezel size, the use of materials corresponding to the reduced bezel size can be saved, which can contribute to the weight reduction of the display device.

Brief Description of the Drawings

[0043]

Figure 1

Figure 2A

Figure 2B

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Embodiments for Carrying Out the Invention

[0044] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to the components of each drawing, for the same components, even if they are shown on different drawings, the same numerals can be used as much as possible. In addition, when explaining the present disclosure, if it is determined that the specific description of related known configurations or functions obscures the gist of the present disclosure, the detailed description thereof can be omitted. When terms such as "including", "having", and "performed" are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include the case where a plurality are included unless otherwise explicitly stated.

[0045] Also, when explaining the components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. can be used. These terms are for distinguishing the components from other components, and the essence, order, procedure, number, etc. of the components are not limited by these terms.

[0046] In the description of the positional relationship of components, when it is described that two or more components are "connected", "coupled", or "joined", etc., it should be understood that the two or more components may be directly "connected", "coupled", or "joined", but it is also possible that another component may "intervene" between the two or more components and they are "connected", "coupled", or "joined". Here, another component may be included in one or more of the two or more components that are "connected", "coupled", or "joined" to each other.

[0047] In the description of the temporal flow relationship regarding components, operating methods, manufacturing methods, etc., for example, when the temporal front-back relationship or flow front-back relationship is described by "after ~", "subsequent to ~", "after ~", "before ~", etc., it can include cases where it is not continuous, unless "immediately" or "directly" is used.

[0048] On the other hand, when referring to a numerical value of a component or its corresponding information (for example, level, etc.), even without a separate explicit description, the numerical value or its corresponding information can be interpreted as including an error range that can be caused by various factors (for example, process factors, internal or external impacts, noise, etc.).

[0049] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0050] FIG. 1 is a system configuration diagram of a display device 100 according to an embodiment of the present disclosure.

[0051] Referring to FIG. 1, a display device 100 according to an embodiment of the present disclosure can include a display panel 110 and a display driving circuit as components for video display. The display driving circuit is a circuit for driving the display panel 110 and can include a data driving circuit 120, a gate driving circuit 130, a display controller 140, etc.

[0052] The display panel 110 can include a substrate 111, a plurality of sub-pixels SP disposed on the substrate 111, and various signal lines disposed on the substrate 111 for driving the plurality of sub-pixels SP.

[0053] The substrate 111 can include a display area DA where a plurality of sub-pixels SP are disposed, and a non-display area NDA located in a first direction from the display area DA.

[0054] The non-display area NDA can include a pad area for connecting the data driving circuit 120. For example, the pad area can be located in the first direction in the display area DA.

[0055] The non-display area NDA can have only a size sufficient to include a pad area or the like. That is, the non-display area NDA of the display panel 110 according to the embodiments of the present disclosure can have a very small size. For example, even if the display panel 110 has a non-display area NDA, the boundary area between the display area and the non-display area NDA can be bent, and the non-display area NDA can be located below the display area DA. In this case, when the user views the display device 100 from the front, the non-display area NDA visible to the user may be almost or entirely absent.

[0056] The display device 100 according to the embodiments of the present disclosure may be a liquid crystal display device or the like, or the display panel 110 may be a self-emitting display device that emits light by itself. When the display device 100 according to the embodiments of the present disclosure is a self-emitting display device, each of the plurality of sub-pixels SP can include a light-emitting element.

[0057] For example, the display device 100 according to an embodiment of the present disclosure may be an organic light emitting display device in which a light emitting element is embodied as an organic light emitting diode (OLED: Organic Light Emitting Diode). As another example, the display device 100 according to an embodiment of the present disclosure may be an inorganic light emitting display device in which a light emitting element is embodied as an inorganic-based light emitting diode. As still another example, the display device 100 according to an embodiment of the present disclosure may be a quantum dot display device in which a light emitting element is embodied as a quantum dot which is a semiconductor crystal that emits light by itself.

[0058] The structure of each of the plurality of sub-pixels SP may vary according to the type of the display device 100. For example, when the display device 100 is a self-emitting display device in which the sub-pixel SP emits light by itself, each sub-pixel SP may include a light emitting element that emits light by itself, one or more transistors, and one or more capacitors.

[0059] For example, some types of signal lines may include a plurality of data lines DL that transmit data signals (which may also be data voltages or video signals) and a plurality of gate lines GL that transmit gate signals (which may also be scan signals).

[0060] For example, 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 while extending in a first direction, and each of the plurality of gate lines GL may be arranged while extending in a second direction. Here, the first direction may be a column direction, and the second direction may be a row direction. Also, the first direction may be a row direction, and the second direction may be a column direction. Hereinafter, for convenience of explanation, it is taken as an example that each of the plurality of data lines DL is arranged in the column direction, each of the plurality of gate lines GL is arranged in the row direction, the first direction is a column direction, and the second direction is a row direction.

[0061] The data driving circuit 120 is a circuit for driving a plurality of data lines DL, and can output a data signal to the plurality of data lines DL.

[0062] The data driving circuit 120 can receive digital video data DATA from the display controller 140, convert the received video data DATA into an analog data signal, and output it to the plurality of data lines DL.

[0063] For example, the data driving circuit 120 can be connected to the display panel 110 by a tape automated bonding (TAB) method, or connected to the bonding pads of the display panel 110 by a chip on glass (COG) or chip on panel (COP) method, or implemented by a chip on film (COF) method and connected to the display panel 110.

[0064] The data driving circuit 120 can be connected to the outer periphery of the display area DA of the display panel 110, but on the contrary, it can also be arranged in the display area DA of the display panel 110.

[0065] The gate driving circuit 130 is a circuit for driving a plurality of gate lines GL, and can output a gate signal to the plurality of gate lines GL.

[0066] The gate driving circuit 130 is supplied with a first gate voltage corresponding to the turn-on level voltage and a second gate voltage corresponding to the turn-off level voltage together with various gate driving control signals GCS, generates a gate signal, and can supply the generated gate signal to the plurality of gate lines GL.

[0067] In the display device 100 according to an embodiment of the present disclosure, the gate driving circuit 130 can be disposed overlapping the display area DA of the display panel 110. For example, the gate driving circuit 130 can be disposed over the entire display area DA, or can be disposed only on a part (e.g., both sides) of the display area DA. When the gate driving circuit 130 is disposed overlapping the display area DA, the gate driving circuit 130 may be disposed so as not to overlap the sub-pixel SP, or may be disposed so as to partially or entirely overlap the sub-pixel SP.

[0068] In the display device 100 according to an embodiment of the present disclosure, the gate driving circuit 130 may be built in the display panel 110 in a gate in panel (GIP) type. When the gate driving circuit 130 is of the gate in panel type, the gate driving circuit 130 can be formed on the substrate 111 of the display panel 110 during the manufacturing process of the display panel 110.

[0069] The display controller 140 is a device for controlling the data driving circuit 120 and the gate driving circuit 130, and can control the driving timing for a plurality of data lines DL and the driving timing for a plurality of gate lines GL.

[0070] The display controller 140 can supply a data driving control signal DCS for data driving control to the data driving circuit 120, and supply a gate driving control signal GCS for gate driving control to the gate driving circuit 130.

[0071] The display controller 140 can receive input video data from the host system 180, and supply video data DATA to the data driving circuit 120 based on the input video data.

[0072] The display controller 140 can be implemented as a separate component from the data driving circuit 120, or can be integrated with the data driving circuit 120 and implemented as an integrated circuit.

[0073] The display controller 140 may be a timing controller used in normal display technology, or a control device that includes a timing controller and can further perform other control functions, or a control device different from the timing controller, or a circuit within the control device. The display controller 140 can be implemented by various circuits and electronic components such as an IC (Integrated Circuit), FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), or a processor.

[0074] The display controller 140 is mounted on a printed circuit board, a flexible printed circuit, etc., and can be electrically connected to the data driving circuit 120 and the gate driving circuit 130 via the printed circuit board, the flexible printed circuit, etc.

[0075] The display controller 140 can transmit and receive signals with the data driving circuit 120 according to one or more predetermined interfaces. For example, the interface can include an LVDS (Low Voltage Differential Signaling) interface, an EPI (Embedded Clock Point-Point Interface), an SPI (Serial Peripheral Interface), etc.

[0076] On the other hand, the display device 100 according to the embodiment of the present disclosure can include a touch sensor and a touch sensing circuit 150 in order to provide not only an image display function but also a touch sensing function.

[0077] The touch sensing circuit 150 can sense the touch sensor to detect whether a touch (finger touch, pen touch) has occurred by a touch object such as a finger or a pen 10, and can detect the touch position.

[0078] For example, the touch sensing circuit 150 can include a touch driving circuit 160 that drives and senses the touch sensor to generate and output touch sensing data, and a touch controller 170 that can sense the occurrence of a touch using the touch sensing data and detect the touch position.

[0079] The touch sensor can include a plurality of sensor electrodes. Here, the touch sensor can also be a touch panel or a touch screen panel (TSP).

[0080] The touch sensor may be an external type existing outside the display panel 110 or an internal type existing inside the display panel 110.

[0081] When the touch sensor is of the external type, the touch sensor and the display panel 110 are separately manufactured and can be combined in the assembly process. The external touch sensor can include a substrate and a plurality of sensor electrodes on the substrate, etc.

[0082] When the touch sensor is of the internal type, a plurality of sensor electrodes can be formed together with various patterns for display driving inside the display panel 110 during the manufacturing process of the display panel 110.

[0083] The touch driving circuit 160 can supply a touch driving signal to at least one of the plurality of sensor electrodes, and sense at least one of the plurality of sensor electrodes to generate touch sensing data.

[0084] The touch sensing circuit 150 can perform touch sensing in a self-capacitance sensing method or a mutual-capacitance sensing method.

[0085] When the touch sensing circuit 150 performs touch sensing in the self-capacitance sensing method, the touch sensing circuit 150 can perform touch sensing based on the capacitance between each sensor electrode and a touch object (e.g., a finger, a pen 10, etc.). According to the self-capacitance sensing method, each of the plurality of sensor electrodes can perform both the role of a transmitting sensor electrode and the role of a receiving sensor electrode. The touch driving circuit 160 can drive all or part of the plurality of sensor electrodes and sense all or part of the plurality of sensor electrodes.

[0086] When the touch sensing circuit 150 performs touch sensing in the mutual-capacitance sensing method, the touch sensing circuit 150 can perform touch sensing based on the capacitance between the plurality of sensor electrodes. According to the mutual-capacitance sensing method, the plurality of sensor electrodes can be classified into a plurality of transmitting sensor electrodes and a plurality of receiving sensor electrodes. The touch driving circuit 160 can drive the plurality of transmitting sensor electrodes and sense the plurality of receiving sensor electrodes.

[0087] Hereinafter, the transmitting sensor electrode is used as the driving sensor electrode, and the receiving sensor electrode is used as the sensing sensor electrode.

[0088] The touch driving circuit 160 and the touch controller 170 included in the touch sensing circuit 150 may be implemented as separate devices or may be implemented as one device.

[0089] In addition, the touch driving circuit 160 and the data driving circuit 120 may be implemented as separate devices or as a single device. For example, the touch driving circuit 160 and the data driving circuit 120 can be configured with a single integrated circuit.

[0090] The display device 100 may further include a power supply circuit that supplies various power supplies to the display driving circuit and / or the touch sensing circuit 150.

[0091] The display device 100 according to an embodiment of the present disclosure may be a mobile terminal such as a smartphone or a tablet, or may be a monitor or a television (TV) of various sizes, and is not limited thereto, and may be various types and various sizes of displays capable of displaying information and images.

[0092] FIG. 2A shows a display panel 110 according to an embodiment of the present disclosure.

[0093] Referring to FIG. 2A, the display panel 110 may include a substrate 111 disposed on a plurality of sub-pixels SP and a sealing layer 200 on the substrate 111. Here, the sealing layer 200 may be a sealing substrate or a sealing portion.

[0094] Referring to FIG. 2A, when the display device 100 according to an embodiment of the present disclosure is a self-emitting display device, each of the plurality of sub-pixels SP may include a light-emitting element ED and a sub-pixel circuit portion SPC for driving the light-emitting element ED.

[0095] Referring to FIG. 2A, the sub-pixel circuit portion SPC may include a plurality of pixel driving transistors for driving the light-emitting element ED and at least one capacitor.

[0096] The plurality of pixel driving transistors may include a first transistor T1 that is a driving transistor for driving the light-emitting element ED and a second transistor T2 for transmitting a data signal VDATA to a second node N2 of the first transistor T1.

[0097] At least one capacitor can include a storage capacitor Cst for maintaining a constant voltage in the frame.

[0098] For driving the sub-pixel SP, data signals VDATA which are video signals, scan signals SC which are gate signals, etc. may be applied to the sub-pixel SP. Further, for driving the sub-pixel SP, a common pixel driving voltage including a first driving voltage VDD and a second driving voltage VSS, etc. may be applied to the sub-pixel SP.

[0099] The light-emitting element ED can include a pixel electrode PE, an element intermediate layer EL, and a common electrode CE. The pixel electrode PE may be an electrode disposed for each sub-pixel SP, and the common electrode CE may be an electrode commonly disposed for a plurality of sub-pixels SP. The element intermediate layer EL may be a layer disposed between the pixel electrode PE and the common electrode CE, and can include a light-emitting layer (EML, emission layer).

[0100] When the light-emitting element ED is an organic light-emitting element, the element intermediate layer EL can include a light-emitting layer (EML, emission layer), a first common layer between the anode and the light-emitting layer, and a second common layer between the light-emitting layer and the cathode. The light-emitting layer is disposed for each sub-pixel SP, and the first and second common layers can be commonly disposed for a plurality of sub-pixels SP. Here, the anode may be the pixel electrode PE or the common electrode CE, and the cathode may be the common electrode CE or the pixel electrode PE.

[0101] For example, the common electrode CE can be electrically connected to the second driving voltage line VSSL. A second driving voltage VSS which is a kind of common pixel driving voltage can be applied to the common electrode CE via the second driving voltage line VSSL. The pixel electrode PE can be electrically connected to the first node N1 of the first transistor T1 of each sub-pixel SP.

[0102] For example, the pixel electrode PE may be an anode, and the common electrode CE may be a cathode. Conversely, the pixel electrode PE may be a cathode, and the common electrode CE may be an anode. Hereinafter, for convenience of explanation, it is assumed that the pixel electrode PE is an anode and the common electrode CE is a cathode.

[0103] Each light-emitting element ED can be composed of a portion where the pixel electrode PE, the element intermediate layer EL, and the common electrode CE overlap. A predetermined light-emitting region can be formed by each light-emitting element ED. For example, the light-emitting region of each light-emitting element ED can include a region where the pixel electrode PE, the element intermediate layer EL, and the common electrode CE overlap.

[0104] According to an embodiment, the light-emitting element ED may be an inorganic-based light-emitting diode (LED: Light Emitting Diode), or a quantum dot light-emitting element, etc.

[0105] The first transistor T1 may be a driving transistor for supplying a driving current to the light-emitting element ED. The first transistor T1 can be connected between the first driving voltage line VDDL and the light-emitting element ED.

[0106] The first transistor T1 can include a first node N1 electrically connected to the light-emitting element ED, a second node N2 to which a data signal VDATA is applied, and a third node N3 to which a first driving voltage VDD is applied from the first driving voltage line VDDL.

[0107] In the first transistor T1, the second node N2 may be a gate node, the first node N1 may be a source node or a drain node, and the third node N3 may be a drain node or a source node. Hereinafter, for convenience of explanation, in the first transistor T1, the case where the second node N2 is a gate node, the first node N1 is a source node, and the third node N3 is a drain node will be taken as an example.

[0108] The second transistor T2 may be a switching transistor for transmitting a data signal VDATA, which is a video signal, to a second node N2, which is a gate node of the first transistor T1 that is a driving transistor.

[0109] The second transistor T2 is controlled to be turned on and off by a scan signal SC, which is a gate signal applied via a scan line SCL, which is a type of gate line, and can control the electrical connection between the second node N2 of the first transistor T1 and the data line DL. A drain electrode or a source electrode of the second transistor T2 can be electrically connected to the data line DL, a source electrode or a drain electrode of the second transistor T2 can be electrically connected to the second node N2 of the first transistor T1, and a gate electrode of the second transistor T2 can be electrically connected to the scan line SCL.

[0110] The storage capacitor Cst can be electrically connected between the first node N1 and the second node N2 of the first transistor T1. The storage capacitor Cst can be electrically connected to the first node N1 of the first transistor T1 or include a first capacitor electrode corresponding to the first node N1 of the first transistor T1 and be electrically connected to the second node N2 of the first transistor T1 or include a second capacitor electrode corresponding to the second node N2 of the first transistor T1.

[0111] Each of the first transistor T1 and the second transistor T2 may be an n-type transistor or a p-type transistor.

[0112] At least a part of the sub-pixel circuit portion SPC can overlap at least a part of the light-emitting element ED in the vertical direction. In contrast, the sub-pixel circuit portion SPC may not overlap the light-emitting element ED in the vertical direction.

[0113] The sub-pixel circuit unit SPC can have a 2T (Transistor) 1C (Capacitor) structure including two transistors T1 and T2 and one storage capacitor Cst as shown in FIG. 2A, and in some cases, it can further include one or more transistors or one or more capacitors.

[0114] Depending on the structure of the sub-pixel circuit unit SPC, the type and number of gate signal gate lines supplied to the sub-pixel SP may change. Also, depending on the structure of the sub-pixel circuit unit SPC, the type and number of common pixel drive voltages supplied to the sub-pixel SP may change.

[0115] Circuit elements within each sub-pixel SP (especially, light-emitting elements ED implemented with organic light-emitting diodes (OLEDs) containing organic substances) are vulnerable to external moisture, oxygen, etc. Therefore, a sealing layer 200 can be disposed on the display panel 110 to prevent external moisture and oxygen from penetrating into the circuit elements (especially, the light-emitting elements ED). The sealing layer 200 can be configured in various forms so that the light-emitting elements ED do not come into contact with moisture and oxygen.

[0116] Referring to FIG. 2A, the display panel 110 according to an embodiment of the present disclosure can include a plurality of sensor electrodes SE for touch sensing. For example, the plurality of sensor electrodes SE can be disposed on the sealing layer 200.

[0117] The display panel 110 according to an embodiment of the present disclosure can further include a plurality of signal wirings (hereinafter, referred to as a plurality of touch routing wirings or a plurality of trace lines) for electrically connecting the plurality of sensor electrodes SE to the touch driving circuit 160.

[0118] The display device 100 according to an embodiment of the present disclosure can have an extremely narrow bezel structure in which the non-display area NDA of the display panel 110 is very small or almost non-existent. Hereinafter, the extremely narrow bezel structure of the display panel 110 of the display device 100 according to the embodiment of the present disclosure will be described.

[0119] The display panel 110 according to an embodiment of the present disclosure has an extremely narrow bezel structure and has an internal touch routing structure. The internal touch routing structure of the display panel 110 according to an embodiment of the present disclosure may be a structure in which touch routing wirings for electrical connection between the sensor electrode SE and the touch driving circuit 160 are arranged across the display area DA without detouring the non-display area NDA outside the display area DA. Hereinafter, the internal touch routing structure of the display panel 110 according to an embodiment of the present disclosure will be described in more detail.

[0120] FIG. 2B shows the substrate 111 of the display panel 110 according to an embodiment of the present disclosure.

[0121] Referring to FIG. 2B, the substrate 111 of the display panel 110 according to an embodiment of the present disclosure can include a display area DA where an image can be displayed and a non-display area NDA where an image is not displayed.

[0122] Referring to FIG. 2B, the non-display area NDA can include a first non-display area NDA1 located in a first direction from the display area DA, a second non-display area NDA2 located in a second direction from the display area DA, a third non-display area NDA3 located in a direction opposite to the first direction from the display area DA, and a fourth non-display area NDA4 located in a direction opposite to the second direction from the display area DA. For example, the first direction may be the column direction (Y-axis direction), and the second direction intersecting the first direction may be the row direction (X-axis direction).

[0123] Referring to FIG. 2B, the first non-display area NDA1 can include a pad area PA where a plurality of pads are arranged. The driving circuit may be electrically connected to the plurality of pads, or a circuit film or printed circuit board 210 on which the driving circuit is implemented may be electrically connected to the plurality of pads. For example, the driving circuit can include a touch driving circuit 160. The driving circuit can further include a data driving circuit 120.

[0124] Referring to FIG. 2B, the first non-display area NDA1 can further include a bending area BA. In this case, the substrate 111 may be a flexible substrate. In some cases, the first non-display area NDA1 may not include the bending area BA.

[0125] For example, when the display device 100 is a mobile device (small display device) such as a smartphone or a tablet, the first non-display area NDA1 can further include a bending area BA. As another example, when the display device 100 is a medium or large display device such as a TV or a monitor, the first non-display area NDA1 may not include the bending area BA.

[0126] Referring to FIG. 2B, the display panel 110 can further include a ground wiring GND disposed in the non-display area NDA of the substrate 111.

[0127] The ground wiring GND can be arranged from one location in the pad area PA to another location in the pad area PA via the second non-display area NDA2, the third non-display area NDA3, and the fourth non-display area NDA4.

[0128] On the other hand, the display panel 110 according to the embodiment of the present disclosure can further include a plurality of touch routing wirings for electrically connecting a plurality of sensor electrodes SE disposed in the display area DA and a plurality of pads disposed in the pad area PA.

[0129] Referring to FIG. 2B, the first non-display area NDA1 of the substrate 111 can include a first touch routing area TRA1 and a second touch routing area TRA2.

[0130] Referring to FIG. 2B, the first touch routing area TRA1 may be an area where a plurality of touch routing wirings for electrically connecting a plurality of sensor electrodes SE and a plurality of pads, which are respectively arranged in the first direction, are arranged.

[0131] Referring to FIG. 2B, the second touch routing area TRA2 may be an area where a plurality of touch routing wirings for electrically connecting a plurality of sensor electrodes SE and a plurality of pads, which are respectively arranged in the second direction, are arranged.

[0132] Referring to FIG. 2B, the second non-display area NDA2 and the fourth non-display area NDA4 of the substrate 111 do not include a touch routing area where touch routing wirings are arranged. Thereby, the second non-display area NDA2 and the fourth non-display area NDA4 of the substrate 111 can be significantly reduced.

[0133] Referring to FIG. 2B, the third non-display area NDA3 of the substrate 111 does not include a pad area PA. In this case, the third non-display area NDA3 of the substrate 111 does not include a touch routing area where touch routing wirings are arranged.

[0134] In contrast, not only the first non-display area NDA1 of the substrate 111 but also the third non-display area NDA3 can include a pad area PA. In this case, the third non-display area NDA3 of the substrate 111 can also include a touch routing area.

[0135] FIG. 3 is a plan view showing a touch sensor included in the display panel 110 according to an embodiment of the present disclosure.

[0136] Referring to FIG. 3, the display panel 110 according to an embodiment of the present disclosure may include a touch sensor including a plurality of sensor electrodes SE disposed in a display area DA.

[0137] Referring to FIG. 3, the display panel 110 according to an embodiment of the present disclosure may further include a plurality of pads PD disposed in a pad area PA, and a plurality of touch routing wirings TL for electrically connecting the plurality of sensor electrodes SE and the plurality of pads PD. The plurality of touch routing wirings TL can also be regarded as a configuration included in the touch sensor.

[0138] Referring to FIG. 3, the plurality of sensor electrodes SE can include a plurality of transmission sensor electrodes SE_TX and a plurality of reception sensor electrodes SE_RX. The plurality of touch routing wirings TL can include a plurality of transmission touch routing wirings TL_TX and a plurality of reception touch routing wirings TL_RX. The plurality of pads PD can include a plurality of transmission pads PD_TX and a plurality of reception pads PD_RX.

[0139] A touch drive signal output from the touch drive circuit 160 may be applied to at least one of the plurality of transmission sensor electrodes SE_TX. Here, the touch drive signal may be a signal whose voltage level varies. For example, the touch drive signal may be a pulse signal having a predetermined frequency and amplitude, or a signal having various signal waveforms such as a triangular wave, a rectangular wave, or a sine wave.

[0140] Referring to FIG. 3, the plurality of transmission sensor electrodes SE_TX and the plurality of reception sensor electrodes SE_RX can be arranged while intersecting each other. For example, each of the plurality of transmission sensor electrodes SE_TX may be arranged to extend in a first direction. Each of the plurality of reception sensor electrodes SE_RX may be arranged to extend in a second direction different from the first direction.

[0141] The shapes of each of the plurality of transmission sensor electrodes SE_TX and the plurality of reception sensor electrodes SE_RX can be variously deformed. For example, each of the plurality of transmission sensor electrodes (SE_TX) and the plurality of reception sensor electrodes (SE_RX) may be in the shape of a bar. As another example, each of the plurality of reception sensor electrodes SE_RX may be composed of several sub-sensor electrodes to be electrically connected, and each of the plurality of transmission sensor electrodes SE_TX may be composed of a plurality of sub-sensor electrodes electrically connected. For example, each of several sub-sensor electrodes can have various shapes such as a square, a rhombus, or a comb shape.

[0142] Referring to FIG. 3, when the internal touch routing structure according to an embodiment of the present disclosure is applied to the display panel 110, a plurality of transmission touch routing wirings TL_TX or a plurality of reception touch routing wirings TL_RX can extend to the pad region PA included in the first non-display region NDA1 across the display region DA without detouring around the second non-display region NDA2 and the fourth non-display region NDA4 located at the outer edges in the second direction and the opposite direction from the display region DA.

[0143] For example, among the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX, the plurality of reception touch routing wirings TL_RX can extend to the pad region PA included in the first non-display region NDA1 across the display region DA in the first direction without detouring around the second non-display region NDA2 and the fourth non-display region NDA4 located at the outer edges in the second direction and the opposite direction from the display region DA. When the plurality of reception touch routing wirings TL_RX cross the display region DA, the plurality of reception touch routing wirings TL_RX can be arranged to avoid the light-emitting regions of each of the plurality of sub-pixels SP in the display region DA. Thereby, an internal trace structure with no degradation in light-emitting performance can be designed.

[0144] In this case, the plurality of reception touch routing wirings TL_RX can intersect with the plurality of reception sensor electrodes SE_RX. That is, the plurality of reception touch routing wirings TL_RX are located in a metal layer different from the plurality of reception sensor electrodes SE_RX and can overlap with the plurality of reception sensor electrodes SE_RX.

[0145] According to the internal touch routing structure of the display panel 110 according to the embodiment of the present disclosure described above, the size of the non-display area NDA can be significantly reduced.

[0146] Referring to FIG. 3, when the internal touch routing structure of the display panel 110 according to the embodiment of the present disclosure is applied, among the first to fourth non-display areas NDA1 to NDA4, a plurality of touch routing wirings TL may be arranged in the first non-display area NDA1 including the pad area PA, but a plurality of touch routing wirings TL may not be arranged in the second non-display area NDA2 and the fourth non-display area NDA4.

[0147] Thereby, among the first to fourth non-display areas NDA1 to NDA4, the sizes of the second non-display area NDA2 and the fourth non-display area NDA4 can be reduced to the limit.

[0148] Referring to FIG. 3, the sensor electrodes SE including the plurality of transmission sensor electrodes SE_TX and the plurality of reception sensor electrodes SE_RX can include sensor metal (SM in FIGS. 8 and 9). The plurality of transmission touch routing wirings TL_TX or the plurality of reception touch routing wirings TL_RX can intersect with the plurality of transmission sensor electrodes SE_TX or the plurality of reception sensor electrodes SE_RX. The plurality of transmission touch routing wirings TL_TX or the plurality of reception touch routing wirings TL_RX can include a bridge metal BM different from the sensor metal included in the plurality of transmission sensor electrodes SE_TX or the plurality of reception sensor electrodes SE_RX.

[0149] For example, as shown in FIG. 3, among the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX, the plurality of reception touch routing wirings TL_RX can intersect with the plurality of reception sensor electrodes SE_RX while crossing the display area DA. In this case, the plurality of transmission touch routing wirings TL_TX can include bridge metal BM or sensor metal, and the plurality of reception touch routing wirings TL_RX can include jumping metal JM.

[0150] As another example, among the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX, the plurality of transmission touch routing wirings TL_TX can intersect with the plurality of transmission sensor electrodes SE_TX while crossing the display area DA. In this case, the plurality of reception touch routing wirings TL_RX can include bridge metal BM or sensor metal, and the plurality of transmission touch routing wirings TL_TX can include jumping metal JM.

[0151] On the other hand, outside the display area DA (that is, in the first non-display area NDA1), the touch routing wiring TL can be changed from sensor metal to bridge metal BM, or can be changed from bridge metal BM to sensor metal. If necessary, a third metal different from the sensor metal and the bridge metal BM may be utilized as a part of the metal of the touch routing wiring TL.

[0152] Hereinafter, a modified example of the touch sensor in FIG. 3 will be described with reference to FIGS. 4, 5, 6, and 7. However, in describing the touch sensors in FIGS. 4, 5, 6, and 7, the description of the same features as those of the touch sensor in FIG. 3 will be omitted, and the description will focus on the different features.

[0153] FIG. 4 is another plan view showing a touch sensor included in the display panel 110 according to an embodiment of the present disclosure.

[0154] Referring to FIG. 4, the touch sensor included in the display panel 110 according to the embodiment of the present disclosure can have a resistive equivalent design structure.

[0155] The number of receiving touch routing wirings TL_RX connected to one receiving sensor electrode SE_RX that is farthest from the pad region PA among the plurality of receiving sensor electrodes SE_RX may be greater than the number of receiving touch routing wirings TL_RX connected to one receiving sensor electrode SE_RX that is closest to the pad region PA among the plurality of receiving sensor electrodes SE_RX.

[0156] For example, as shown in FIG. 4, two receiving touch routing wirings TL_RXa and TL_RXb can be connected to each of the two ends of one receiving sensor electrode SE_RX that is farthest from the pad region PA among the plurality of receiving sensor electrodes SE_RX, and one receiving touch routing wiring TL_RX can be connected to each of the two ends of one receiving sensor electrode SE_RX that is closest to the pad region PA among the plurality of receiving sensor electrodes SE_RX.

[0157] Referring to FIG. 4, the first touch routing wiring TL1 connected to one end of the first sensor electrode SE1, which is the receiving sensor electrode SE_RX that is farthest away, can include two receiving touch routing wirings TL_RXa and TL_RXb that extend in the first direction while overlapping the display area DA. Similarly, the first touch routing wiring TL1 connected to the other end of the first sensor electrode SE1 can include two receiving touch routing wirings TL_RXa and TL_RXb that extend in the first direction while overlapping the display area DA. The two receiving touch routing wirings TL_RXa and TL_RXb included in the first touch routing wiring TL1 connected to one end of the first sensor electrode SE1 can be physically connected in the non-display area NDA. The two receiving touch routing wirings TL_RXa and TL_RXb included in the first touch routing wiring TL1 connected to the other end of the first sensor electrode SE1 can be physically connected in the non-display area NDA.

[0158] In this way, the two reception touch routing wirings TL_RXa and TL_RXb can be physically connected (i.e., bundled into one) in the non-display area NDA and connected to one first pad PD1. Thereby, the number of pads in the pad area PA can be reduced, and the number of pads (channel number) of the touch drive circuit 160 can be reduced.

[0159] For example, when classifying a plurality of reception sensor electrodes SE_RX into n groups, the number of one reception touch routing wiring TL_RX connected to the reception sensor electrode SE_RX included in the first group closest to the pad area PA among the n groups may be one, and the number of one reception touch routing wiring TL_RX connected to the reception sensor electrode SE_RX included in the second group second closest to the pad area PA among the n groups may be two, and the number of one reception touch routing wiring TL_RX connected to the reception sensor electrode SE_RX included in the third group third closest to the pad area PA among the n groups may be three, and the number of one reception touch routing wiring TL_RX connected to the reception sensor electrode SE_RX included in the nth group nth closest to the pad area PA among the n groups may be n.

[0160] According to the resistance equivalent design structure of the touch sensor included in the display panel 110 according to the embodiment of the present disclosure, even though there is a length deviation between the plurality of reception touch routing wirings TL_RX, the resistance deviation of the signal transmission path between the plurality of reception sensor electrodes SE_RX and the plurality of reception pads PD_RX can be reduced. Thereby, the touch sensitivity can be improved.

[0161] On the one hand, referring to FIGS. 3 and 4, in the touch sensor included in the display panel 110 according to an embodiment of the present disclosure, all of the plurality of receiving sensor electrodes SE_RX and the plurality of contact holes CNT to which the plurality of receiving touch routing wirings TL_RX are connected can be located further outside the outermost transmitting touch routing wiring TL_TX among the plurality of transmitting touch routing wirings TL_TX.

[0162] In other words, referring to FIGS. 3 and 4, the first touch routing wiring TL1, the second touch routing wiring TL2, and the fourth touch routing wiring TL4 can be arranged to extend in the first direction from the edge region within the display area DA. Here, the edge region is a partial region included in the display area DA, and may be a partial region located further outside the outermost sensor electrode SE4 among the transmitting sensor electrodes SE_TX extending in the first direction. In the examples of FIGS. 3 and 4, the edge region includes a first edge region located further outside the outermost sensor electrode SE3 on the left side (opposite to the second direction) among the transmitting sensor electrodes SE_TX extending in the first direction and a second edge region located further outside the outermost sensor electrode on the right side (second direction) among the transmitting sensor electrodes SE_TX extending in the first direction.

[0163] FIG. 5 is yet another plan view showing the touch sensor included in the display panel 110 according to an embodiment of the present disclosure.

[0164] Referring to FIG. 5, in the touch sensor included in the display panel 110 according to the embodiment of the present disclosure, among the plurality of receiving sensor electrodes SE_RX and the plurality of receiving touch routing wirings TL_RX, some of the contact holes CNT are located further outside than the outermost transmitting touch routing wiring TL_TX among the plurality of transmitting touch routing wirings TL_TX, and the other contact holes CNT can be located inside the outermost transmitting touch routing wiring TL_TX and some of the transmitting sensor electrodes SE_TX (for example, the sensor electrode SE3 arranged at the outermost).

[0165] For example, the receiving touch routing wirings TL_RX corresponding to the respective receiving sensor electrodes SE_RX different from each other across the transmitting sensor electrode SE_TX (for example, the third sensor electrode SE3) can be arranged.

[0166] Referring to FIG. 5, some of the plurality of contact holes CNT connecting the plurality of receiving sensor electrodes SE_RX and the plurality of receiving touch routing wirings TL_RX can be located between two adjacent transmitting touch routing wirings TL_TX.

[0167] Referring to FIG. 5, at least one (for example, TL4) of the plurality of receiving touch routing wirings TL_RX can intersect a part of the plurality of transmitting touch routing wirings TL_TX. That is, at least one (for example, TL4) of the plurality of receiving touch routing wirings TL_RX may overlap a part of the plurality of transmitting touch routing wirings TL_TX.

[0168] In the touch sensors of FIGS. 3, 4, and 5, each of the plurality of transmitting sensor electrodes SE_TX may be arranged to extend in a first direction (for example, the column direction), and each of the plurality of receiving sensor electrodes SE_RX may be arranged to extend in a second direction (for example, the row direction).

[0169] In this case, the touch driving circuit 160 can supply a touch driving signal having a signal waveform whose voltage level varies with time to at least one of a plurality of transmission sensor electrodes SE_TX arranged to extend in the first direction, and can sense at least one of a plurality of reception sensor electrodes SE_RX arranged to extend in the second direction.

[0170] FIG. 6 is yet another plan view showing the touch sensor included in the display panel 110 according to an embodiment of the present disclosure.

[0171] Referring to FIG. 6, in the touch sensor included in the display panel 110 according to an embodiment of the present disclosure, each of the plurality of transmission sensor electrodes SE_TX may be arranged to extend in the second direction (for example, the row direction), and each of the plurality of reception sensor electrodes SE_RX may be arranged to extend in the first direction (for example, the column direction).

[0172] In this case, the touch driving circuit 160 can supply a touch driving signal having a signal waveform whose voltage level varies with time to at least one of a plurality of transmission sensor electrodes SE_TX arranged to extend in the second direction, and can sense at least one of a plurality of reception sensor electrodes SE_RX arranged to extend in the first direction.

[0173] In FIGS. 3 to 7, as an example, the plurality of sensor electrodes SE arranged to extend in the second direction include a first sensor electrode SE1, a second sensor electrode SE2, and a fourth sensor electrode SE4, and the plurality of sensor electrodes SE arranged to extend in the first direction include a third sensor electrode SE3.

[0174] As an example, in FIGS. 3, 4, 5, and 7, the plurality of reception sensor electrodes SE_RX arranged to extend in the second direction include a first sensor electrode SE1, a second sensor electrode SE2, and a fourth sensor electrode SE4, and the plurality of transmission sensor electrodes SE_TX arranged to extend in the first direction include a third sensor electrode SE3.

[0175] As another example, in FIG. 6, a plurality of transmission sensor electrodes SE_TX arranged to extend in the second direction include a first sensor electrode SE1, a second sensor electrode SE2, and a fourth sensor electrode SE4, and a plurality of reception sensor electrodes SE_RX arranged to extend in the first direction include a third sensor electrode SE3 as an example.

[0176] As shown in FIGS. 3, 4, 5, and 6, at least one first touch routing wiring TL1 can be electrically connected to both ends of the first sensor electrode SE1 arranged to extend in the second direction. That is, one or more than one first touch routing wiring TL1 can be electrically connected to one end (for example, the left part) of both ends of the first sensor electrode SE1, and one or more than one first touch routing wiring TL1 can be electrically connected to the other end (for example, the right part) of both ends of the first sensor electrode SE1. In this case, by transmitting signals from both sides of the first sensor electrode SE1, even when the length of the first sensor electrode SE1 in the second direction is long, the delay in signal transmission in the first sensor electrode SE1 itself can be reduced.

[0177] Similarly, at least one second touch routing wiring TL2 can be electrically connected to both ends of the second sensor electrode SE2 arranged to extend in the second direction. At least one fourth touch routing wiring TL4 can be electrically connected to both ends of the fourth sensor electrode SE4 arranged to extend in the second direction.

[0178] In contrast, at least one first touch routing wiring TL1 can be electrically connected to only one end of both ends of the first sensor electrode SE1 arranged to extend in the second direction. At least one second touch routing wiring TL2 can be electrically connected to only one end of both ends of the second sensor electrode SE2 arranged to extend in the second direction. At least one fourth touch routing wiring TL4 can be electrically connected to only one end of both ends of the fourth sensor electrode SE4 arranged to extend in the second direction.

[0179] As shown in FIGS. 3, 4, 5, and 6, two first touch routing wirings TL1 connected to both ends of the first sensor electrode SE1 can be electrically connected to two first pads PD1. Two second touch routing wirings TL2 connected to both ends of the second sensor electrode SE2 can be electrically connected to two second pads PD2. Two fourth touch routing wirings TL4 connected to both ends of the fourth sensor electrode SE4 can be electrically connected to two fourth pads PD4.

[0180] FIG. 7 is yet another plan view showing the touch sensor included in the display panel 110 according to an embodiment of the present disclosure.

[0181] Referring to FIG. 7, two first touch routing wirings TL1 can be electrically connected to both ends of the first sensor electrode SE1 arranged to extend in the second direction. That is, one first touch routing wiring TL1 can be electrically connected to one end of both ends of the first sensor electrode SE1, and one first touch routing wiring TL1 can be electrically connected to the other end of both ends of the first sensor electrode SE1. In this case, when the length of the first sensor electrode SE1 in the second direction is long, the delay in signal transmission in the first sensor electrode SE1 itself can be reduced.

[0182] Similarly, two second touch routing wirings TL2 can be electrically connected to both ends of the second sensor electrode SE2 arranged to extend in the second direction. Two fourth touch routing wirings TL4 can be electrically connected to both ends of the fourth sensor electrode SE4 arranged to extend in the second direction.

[0183] As described above, by connecting two touch routing wirings TL to one sensor electrode SE, the delay in signal transmission generated in the sensor electrode SE itself can be reduced.

[0184] Referring to FIG. 7, two first touch routing wirings TL1 connected to both ends of the first sensor electrode SE1 can be commonly connected to one first pad PD1. Two second touch routing wirings TL2 connected to both ends of the second sensor electrode SE2 can be commonly connected to one second pad PD2. Two fourth touch routing wirings TL4 connected to both ends of the fourth sensor electrode SE4 can be commonly connected to one fourth pad PD4.

[0185] According to such a pad sharing structure, one pad can be connected to two touch routing wirings TL connected to both ends of one sensor electrode SE. Thereby, the number of pads and the size of the pad region PA in the display panel 110 can be reduced, and the number of pads (channel number) of the touch drive circuit 160 connected to the pad region PA can also be reduced. Thereby, the size of the touch drive circuit 160 can also be reduced.

[0186] Referring to FIGS. 3 to 7, a plurality of transmission pads PD_TX and a plurality of reception pads PD_RX arranged in the pad region PD can be grouped and arranged by type. In other words, the plurality of transmission pads PD_TX may be gathered and arranged together, and the plurality of reception pads PD_RX may be gathered and arranged together.

[0187] On the contrary, the plurality of transmission pads PD_TX and the plurality of reception pads PD_RX arranged in the pad region PD may be arranged in a mixed manner.

[0188] Referring to FIGS. 3, 4, and 6, in the first non-display area NDA1, the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX may not cross each other. In this case, the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX may not overlap in the vertical direction. Thereby, the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX may be arranged in different metal layers from each other, or may be arranged in the same metal layer as each other.

[0189] Referring to FIGS. 5 and 7, in the first non-display area NDA1, all or part of the plurality of reception touch routing wirings TL_RX may cross all or part of the plurality of transmission touch routing wirings TL_TX. In this case, the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX may overlap in the vertical direction. Thereby, the plurality of transmission touch routing wirings TL_TX and the plurality of reception touch routing wirings TL_RX must be arranged in different metal layers from each other.

[0190] For example, as shown in FIGS. 3, 4, 5, and 7, when each of the plurality of transmission sensor electrodes SE_TX extends and is arranged in the first direction, and each of the plurality of reception sensor electrodes SE_RX extends and is arranged in the second direction, the plurality of transmission touch routing wirings TL_TX electrically connected to the plurality of transmission sensor electrodes SE_TX can be arranged in the bridge metal layer, and the plurality of reception touch routing wirings TL_RX electrically connected to the plurality of reception sensor electrodes SE_RX can be arranged in the jumping metal layer. That is, the plurality of transmission touch routing wirings TL_TX electrically connected to the plurality of transmission sensor electrodes SE_TX can include the bridge metal BM, and the plurality of reception touch routing wirings TL_RX electrically connected to the plurality of reception sensor electrodes SE_RX can include the jumping metal JM.

[0191] For example, as shown in FIG. 6, when each of the plurality of transmission sensor electrodes SE_TX extends and is arranged in the second direction, and each of the plurality of reception sensor electrodes SE_RX extends and is arranged in the first direction, the plurality of transmission touch routing wirings TL_TX electrically connected to the plurality of transmission sensor electrodes SE_TX can be arranged in the jumping metal layer, and the plurality of reception touch routing wirings TL_RX electrically connected to the plurality of reception sensor electrodes SE_RX can be arranged in the bridge metal layer. That is, the plurality of transmission touch routing wirings TL_TX electrically connected to the plurality of transmission sensor electrodes SE_TX can include the jumping metal JM, and the plurality of reception touch routing wirings TL_RX electrically connected to the plurality of reception sensor electrodes SE_RX can include the bridge metal BM. Referring to FIGS. 3 to 7, the substrate 111 can include a non-display area (NDA) including a display area DA in which a plurality of sub-pixels SP are arranged and a pad area PA located in the first direction from the display area DA.

[0192] Referring to FIGS. 3 to 7, the non-display area NDA can include a first non-display area NDA1 located in the first direction from the display area DA, a second non-display area NDA2 located in the second direction from the display area DA, a third non-display area NDA3 located in the opposite direction of the first direction from the display area DA, and a fourth non-display area NDA4 located in the opposite direction of the second direction from the display area DA. For example, the first direction may be the column direction (Y-axis direction), and the second direction intersecting the first direction may be the row direction (X-axis direction).

[0193] Referring to FIGS. 3 to 7, the plurality of sensor electrodes SE can include a first sensor electrode SE1 arranged in the display area DA and extending in the second direction and a second sensor electrode SE2 arranged in the display area DA and extending in the second direction.

[0194] Referring to FIGS. 3 to 7, the plurality of pads PD can include a first pad PD1 arranged in the pad area PA and a second pad PD2 arranged in the pad area PA.

[0195] Referring to FIGS. 3 to 7, the plurality of touch routing wirings TL can include a first touch routing wiring TL1 that electrically connects the first sensor electrode SE1 and the first pad PD1, and a second touch routing wiring TL2 that electrically connects the second sensor electrode SE2 and the second pad PD2.

[0196] Referring to FIGS. 3 to 7, the second sensor electrode SE2 can be positioned closer to the pad region PA than the first sensor electrode SE1. In this case, since the display panel 110 has an internal touch routing wiring structure, the first touch routing wiring TL1 can overlap the second sensor electrode SE2.

[0197] Referring to FIGS. 3 to 7, the first touch routing wiring TL1 and the second touch routing wiring TL2 can extend across the display area DA in the first direction to the pad region PA.

[0198] Referring to FIGS. 3 to 7, the plurality of sensor electrodes SE are arranged in the display area DA, and can further include a third sensor electrode SE3 extending in the first direction and a fourth sensor electrode SE4 arranged in the display area DA and extending in the second direction. The plurality of pads PD can further include a third pad PD3 arranged in the pad region PA and a fourth pad PD4 arranged in the pad region PA. The plurality of touch routing wirings TL can further include a third touch routing wiring TL3 that electrically connects the third sensor electrode SE3 and the third pad PD3, and a fourth touch routing wiring TL4 that electrically connects the fourth sensor electrode SE4 and the fourth pad PD4.

[0199] The fourth sensor electrode SE4 can be arranged in parallel with the first sensor electrode SE1 and the second sensor electrode SE2.

[0200] The fourth sensor electrode SE4 can be positioned closer to the pad region PA than the first sensor electrode SE1 and the second sensor electrode SE2.

[0201] Referring to the display panel 110 according to the internal touch routing wiring structure, each of the first touch routing wiring TL1, the second touch routing wiring TL2, and the fourth touch routing wiring TL4 can overlap with the fourth sensor electrode SE4.

[0202] Referring to FIGS. 3, 4, 5, and 7, among the first sensor electrode SE1, the second sensor electrode SE2, the third sensor electrode SE3, and the fourth sensor electrode SE4, the third sensor electrode SE3 may be the transmission sensor electrode SE_TX, and the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4 may be the reception sensor electrodes SE_RX.

[0203] Thereby, a signal (touch drive signal) whose voltage level fluctuates can be supplied from the touch drive circuit 160 to the third sensor electrode SE3.

[0204] Referring to FIG. 6, among the first sensor electrode SE1, the second sensor electrode SE2, the third sensor electrode SE3, and the fourth sensor electrode SE4, the third sensor electrode SE3 may be the reception sensor electrode SE_RX, and the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4 may be the transmission sensor electrodes SE_TX.

[0205] A signal (touch drive signal) whose voltage level fluctuates can be supplied from the touch drive circuit 160 to each of the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4.

[0206] Referring to FIG. 4, the number of the first touch routing wirings TL1 connected to the first sensor electrode SE1 (for example, two) may be more than the number of the fourth touch routing wirings TL4 connected to the fourth sensor electrode SE4 (for example, one). For example, the number of the first touch routing wirings TL1 connected to the first sensor electrode SE1 may be twice the number of the fourth touch routing wirings TL4 connected to the fourth sensor electrode SE4. As illustrated in FIG. 4, the number of the first touch routing wirings TL1 connected to the first sensor electrode SE1 is four, and the number of the fourth touch routing wirings TL4 connected to the fourth sensor electrode SE4 may be one. As another example, the number of the first touch routing wirings TL1 connected to the first sensor electrode SE1 may be two, and the number of the fourth touch routing wirings TL4 connected to the fourth sensor electrode SE4 may be one.

[0207] Referring to FIGS. 3 to 7, the third sensor electrode SE3 can intersect the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4.

[0208] Referring to FIGS. 3, 4, 6, and 7, the first touch routing wiring TL1, the second touch routing wiring TL2, and the fourth touch routing wiring TL4 may be arranged along the outer contour of the third sensor electrode SE3, which is the outermost one among the sensor electrodes SE extending in the first direction.

[0209] Referring to FIG. 5, among the first touch routing wiring TL1, the second touch routing wiring TL2, and the fourth touch routing wiring TL4, the first touch routing wiring TL1 and the second touch routing wiring TL2 can be arranged outside the third sensor electrode SE3, and the fourth touch routing wiring TL4 can be arranged inside the third sensor electrode SE3.

[0210] In this case, the third sensor electrode SE3 can be arranged between the first touch routing wiring TL1 and the fourth touch routing wiring TL4. Alternatively, the third sensor electrode SE3 can be arranged between the first touch routing wiring TL1 and the contact hole CNT of the first sensor electrode SE1 and between the fourth touch routing wiring TL4 and the contact hole CNT of the fourth sensor electrode SE4.

[0211] Referring to FIGS. 3 to 7, the plurality of transmission pads PD_TX and the plurality of reception pads PD_RX arranged in the pad region PD can be grouped and arranged by type. That is, the plurality of transmission pads PD_TX may be gathered and arranged together, and the plurality of reception pads PD_RX may be gathered and arranged together.

[0212] In contrast, the plurality of transmission pads PD_TX and the plurality of reception pads PD_RX arranged in the pad region PD may be arranged in a mixed manner.

[0213] Referring to FIG. 5, when the plurality of transmission pads PD_TX and the plurality of reception pads PD_RX arranged in the pad region PD are grouped and arranged by type, the fourth pad PD4, which is a reception pad PD_RX, can be arranged between the first pad PD1, which is a reception pad PD_RX, and the third pad PD3, which is a transmission pad PD_TX.

[0214] In this case, the fourth touch routing wiring TL4 can cross the third touch routing wiring TL3. Therefore, the fourth touch routing wiring TL4 must be arranged in a metal layer different from that of the third touch routing wiring TL3. For example, the fourth touch routing wiring TL4 can include a jumping metal, and the third touch routing wiring TL3 can include a bridge metal.

[0215] When a plurality of transmission pads PD_TX and a plurality of reception pads PD_RX arranged in the pad region PD are arranged in a mixed manner, unlike FIG. 5, the third pad PD3, which is a transmission pad PD_TX, can be arranged between the first pad PD1, which is a reception pad PD_RX, and the fourth pad PD4, which is a reception pad PD_RX.

[0216] The fourth touch routing wiring TL4 may not cross the third touch routing wiring TL3. Therefore, the fourth touch routing wiring TL4 can also be located in the same metal layer as the third touch routing wiring TL3. For example, the fourth touch routing wiring TL4 and the fourth touch routing wiring TL4 can include a bridge metal BM or a jumping metal JM.

[0217] Hereinafter, for the sake of convenience of explanation, an example will be described in which a plurality of sensor electrodes SE respectively extending and arranged in the first direction are transmission sensor electrodes SE_TX, and a plurality of sensor electrodes SE respectively extending and arranged in the second direction are reception sensor electrodes SE_RX. However, the following description will also be similarly applicable when a plurality of sensor electrodes SE respectively extending and arranged in the first direction are reception sensor electrodes SE_RX, and a plurality of sensor electrodes SE respectively extending and arranged in the second direction are transmission sensor electrodes SE_TX.

[0218] FIG. 8 exemplarily and in detail shows a partial region 300 of the touch sensor included in the display panel 110 according to an embodiment of the present disclosure. FIG. 8 is an exemplary enlarged view of a partial region 300 of the touch sensor in FIG. 3. In the following description, FIGS. 3 to 7 will also be referred to together.

[0219] As described above, the substrate 111 of the display panel 110 according to the embodiment of the present disclosure can include a display region DA in which a plurality of sub-pixels SP are arranged, and a non-display region NDA including a pad region PA located in the first direction from the display region DA.

[0220] Referring to FIG. 8, in a partial region 300 of the touch sensor of FIG. 3, a first receiving sensor electrode SE_RX1 and a second receiving sensor electrode SE_RX2 each extending in a second direction (for example, a row direction) are arranged, and a first transmitting sensor electrode SE_TX1, a second transmitting sensor electrode SE_TX2, and a third transmitting sensor electrode SE_TX3 each extending in a first direction (for example, a column direction) may be arranged. Here, the first direction and the second direction may be directions intersecting each other.

[0221] Referring to FIG. 8, in a partial region 300 of the touch sensor in FIG. 3, a first receiving touch routing wiring TL_RX1 electrically connected to the first receiving sensor electrode SE_RX1 and a second receiving touch routing wiring TL_RX2 electrically connected to the second receiving sensor electrode SE_RX2 can be further arranged.

[0222] Referring to FIG. 8, the first transmitting sensor electrode SE_TX1, the second transmitting sensor electrode SE_TX2, and the third transmitting sensor electrode SE_TX3 can be electrically connected to a first transmitting touch routing wiring TL_TX1, a second transmitting touch routing wiring TL_TX2, and a third transmitting touch routing wiring TL_TX3, respectively, in the first non-display region NDA1 or in the vicinity thereof.

[0223] Hereinafter, the first receiving sensor electrode SE_RX1 is designated as the first sensor electrode SE1, the second receiving sensor electrode SE_RX2 is designated as the second sensor electrode SE2, and the first transmitting sensor electrode SE_TX1 is designated as the third sensor electrode SE3. Also, the first receiving touch routing wiring TL_RX1 is designated as the first touch routing wiring TL1, the second receiving touch routing wiring TL_RX2 is designated as the second touch routing wiring TL2, and the first transmitting touch routing wiring TL_TX1 is designated as the third touch routing wiring TL3. Further, the first receiving pad PD_RX to which the first receiving sensor electrode SE_RX1 is connected via the first receiving touch routing wiring TL_RX1 is designated as the first pad PD1, the second receiving pad PD_RX to which the second receiving sensor electrode SE_RX2 is connected via the second receiving touch routing wiring TL_RX2 is designated as the second pad PD2, and the first transmitting pad PD_TX to which the first transmitting sensor electrode SE_TX1 is connected via the first transmitting touch routing wiring TL_TX1 is designated as the third pad PD3.

[0224] The first sensor electrode SE1 is disposed in the display area DA and can include a plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, SUB1d arranged in the second direction and at least one first bridge BRG1 that electrically connects the plurality of first sub-sensor electrodes.

[0225] The second sensor electrode SE2 is disposed in the display area DA and can include a plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d arranged in the second direction and at least one second bridge BRG2 that electrically connects the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d.

[0226] The third sensor electrode SE3 is disposed in the display area DA and is arranged in the first direction, but can be arranged passing between two adjacent first sub-sensor electrodes (for example, SUB1a and SUB1b) among the plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, SUB1d included in the first sensor electrode SE1.

[0227] Further, the third sensor electrode SE3 is disposed in the display area DA and arranged in the first direction, but can be arranged through between two adjacent second sub-sensor electrodes (for example, SUB2a and SUB2b) among the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d included in the second sensor electrode SE2.

[0228] That is, the third sensor electrode SE3 can be arranged to extend in the first direction while passing between two first sub-sensor electrodes (for example, SUB1a and SUB1b) included in the first sensor electrode SE1 and between two second sub-sensor electrodes (for example, SUB2a and SUB2b) included in the second sensor electrode SE2.

[0229] The third sensor electrode SE3 can overlap while intersecting with the first bridge BRG1 and the second bridge BRG2. However, the third sensor electrode SE3 may be electrically separated (insulated) from the first bridge BRG1 and the second bridge BRG2.

[0230] The first touch routing wiring TL1 can electrically connect at least one (for example, SUB1a) among the plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, SUB1d included in the first sensor electrode SE1 and the first pad PD1 arranged in the pad area PA.

[0231] That is, a part of the first touch routing wiring TL1 can be electrically connected to at least one (for example, SUB1a) among the plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, SUB1d included in the first sensor electrode SE1 through the contact hole CNT, and the other part of the first touch routing wiring TL1 can be electrically connected to the first pad PD1.

[0232] The second touch routing wiring TL2 can electrically connect at least one (e.g., SUB2a) of the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d included in the second sensor electrode SE2 and the second pad PD2 disposed in the pad region PA.

[0233] That is, a part of the second touch routing wiring TL2 can be electrically connected to at least one (e.g., SUB2a) of the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d included in the second sensor electrode SE2 via a contact hole CNT, and the other part of the second touch routing wiring TL2 can be electrically connected to the second pad PD2.

[0234] The third touch routing wiring TL3 can electrically connect the third sensor electrode SE3 and the third pad PD3 disposed in the pad region PA.

[0235] The first sensor electrode SE1 and the second sensor electrode SE2 can be arranged parallel to each other. The second sensor electrode SE2 can be arranged closer to the pad region PA than the first sensor electrode SE1.

[0236] The third sensor electrode SE3 can be arranged to intersect the first sensor electrode SE1 and the second sensor electrode SE2.

[0237] Referring to FIG. 8, since the display panel 110 has an internal touch routing structure, the first touch routing wiring TL1 can overlap at least one (e.g., SUB2a) of the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, SUB2d included in the second sensor electrode SE2.

[0238] Referring to FIG. 8, the two first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1 can be interposed in the first space provided by the constricted portion of the third sensor electrode SE3. The two second sub-sensor electrodes SUB2a and SUB2b included in the second sensor electrode SE2 can be interposed in the second space provided by the constricted portion of the third sensor electrode SE3. Thereby, the effective area of the touch sensor can be greatly expanded and the touch sensitivity can be improved.

[0239] With such a shape of the touch sensor and the internal touch routing structure, the third sensor electrode SE3 can overlap with the first touch routing wiring TL1 and the second touch routing wiring TL2.

[0240] Referring to FIG. 8, the plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, and SUB1d included in the first sensor electrode SE1 can be arranged in the first metal layer SML. The first bridge BRG1 can be arranged in the second metal layer BML different from the first metal layer SML. The first touch routing wiring TL1 is arranged across the display area DA in the first direction and extends to the pad area PA, and can be arranged in the third metal layer JML different from the first metal layer SML and the second metal layer BML.

[0241] Referring to FIG. 8, the plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, and SUB2d included in the second sensor electrode SE2 can be arranged in the first metal layer SML. The second bridge BRG2 can be arranged in the second metal layer BML different from the first metal layer SML. The second touch routing wiring TL2 is arranged across the display area DA in the first direction and extends to the pad area PA, and can be arranged in the third metal layer JML different from the first metal layer SML and the second metal layer BML.

[0242] Referring to FIG. 8, the third sensor electrode SE3 can be arranged in the first metal layer SML.

[0243] Referring to FIG. 8, the third touch routing wiring TL3 can be arranged in a metal layer different from the first touch routing wiring TL1 and the second touch routing wiring TL2.

[0244] For example, the first touch routing wiring TL1 and the second touch routing wiring TL2 can be arranged in the third metal layer JML, and the third touch routing wiring TL3 can be arranged in the second metal layer BML.

[0245] Hereinafter, for convenience of explanation, the first metal layer SML is the sensor metal layer SML, the second metal layer BML is the bridge metal layer BML, and the third metal layer JML is the jumping metal layer JML.

[0246] FIG. 9 shows a unit sensor 800 in a touch sensor included in the display panel 110 according to an embodiment of the present disclosure. Here, the unit sensor 800 can mean an area where one transmission sensor electrode SE_TX and one reception sensor electrode SE_RX intersect.

[0247] Referring to FIG. 9, each of the plurality of first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1 can be arranged in the sensor metal layer SML and can be composed of a mesh-shaped sensor metal SM having an opening OA.

[0248] The third sensor electrode SE3 can also be arranged in the sensor metal layer SML and can also be composed of a mesh-shaped sensor metal SM having an opening OA.

[0249] Here, each opening OA formed in each of the first sensor electrode SE1 and the third sensor electrode SE3 can correspond to the light emitting region of at least one sub-pixel SP. That is, the light emitted from the light emitting element ED of at least one sub-pixel SP can pass through each opening OA.

[0250] Referring to FIG. 9, the two first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1 can be interposed in a first space provided by the constricted portion of the third sensor electrode SE3.

[0251] Referring to FIG. 9, the first bridge BRG1 included in the first sensor electrode SE1 can be disposed within the bridge metal layer BML. The first bridge BRG1 included in the first sensor electrode SE1 can be arranged to bend or warp along the shape of the sensor metal SM that constitutes the two first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1.

[0252] Referring to FIG. 9, the first bridge BRG1 included in the first sensor electrode SE1 can intersect the third sensor electrode SE3.

[0253] Referring to FIG. 9, the first bridge BRG1 included in the first sensor electrode SE1 can be arranged to bend or warp along the shape of the mesh-like sensor metal SM that constitutes each of the first sensor electrode SE1 and the third sensor electrode SE3.

[0254] The first bridge BRG1 included in the first sensor electrode SE1 can overlap perpendicularly with the mesh-like sensor metal SM that constitutes each of the first sensor electrode SE1 and the third sensor electrode SE3.

[0255] The first bridge BRG1 included in the first sensor electrode SE1 can be arranged to avoid at least one of the openings OA of the first sensor electrode SE1 and the third sensor electrode SE3.

[0256] Thereby, it is possible to prevent the light-emitting area of the sub-pixel SP from being reduced by the first bridge BRG1, expand the light-emitting area of the sub-pixel SP, and improve the light-emitting efficiency.

[0257] Referring to FIG. 9, the first touch routing wiring TL1 electrically connected to the first sensor electrode SE1 is disposed within the jumping metal layer JML, and can be disposed by being bent or deflected along the shape of the sensor metal SM constituting the first sensor electrode SE1.

[0258] The first touch routing wiring TL1 electrically connected to the first sensor electrode SE1 can overlap perpendicularly with the mesh-shaped sensor metals SM respectively constituting the first sensor electrode SE1 and the third sensor electrode SE3.

[0259] The first touch routing wiring TL1 electrically connected to the first sensor electrode SE1 can be disposed while avoiding at least one of the openings OA of the first sensor electrode SE1 and the third sensor electrode SE3.

[0260] Thereby, it is possible to prevent the light-emitting region of the sub-pixel SP from being reduced by the first touch routing wiring TL1, the light-emitting region of the sub-pixel SP can be expanded, and the light-emitting efficiency can be improved.

[0261] FIGS. 10 and 11 show the stacked structure of the touch sensor included in the display panel 110 according to the embodiment of the present disclosure. FIG. 10 shows a vertical cross-sectional structure with respect to the region 900 where two first sub-sensor electrodes SUB1a and SUB1b are connected by the first bridge BRG1 in FIG. 9. FIG. 11 shows a vertical cross-sectional structure along the line A-B in the region where the first touch routing wiring TL1 and the first sub-sensor electrode SUB1a are electrically connected in FIG. 9.

[0262] Referring to FIGS. 10 and 11, when the display panel 110 is a self-emitting display panel, the display panel 110 can include a sealing layer 200 on the light-emitting element ED.

[0263] Referring to FIGS. 10 and 11, for touch sensor formation, the display panel 110 may further include a first touch interlayer insulating film 1010 on the sealing layer 200, a second touch interlayer insulating film 1020 on the first touch interlayer insulating film 1010, and a touch protection film 1030 on the second touch interlayer insulating film 1020.

[0264] Referring to FIGS. 10 and 11, the jumping metal layer JML can be disposed between the sealing layer 200 and the first touch interlayer insulating film 1010. The bridge metal layer BML can be disposed between the first touch interlayer insulating film 1010 and the second touch interlayer insulating film 1020. The sensor metal layer SML can be disposed between the second touch interlayer insulating film 1020 and the touch protection film 1030.

[0265] Referring to FIGS. 10 and 11, for touch sensor formation, the display panel 110 may further include a touch buffer film 1000 between the sealing layer 200 and the first touch interlayer insulating film 1010. In this case, the jumping metal layer JML can be disposed between the touch buffer film 1000 and the first touch interlayer insulating film 1010.

[0266] In an embodiment of the present disclosure, the statement that a certain metal includes the jumping metal JM may have the same meaning as that a certain metal is disposed within the jumping metal layer JML, the statement that a certain metal includes the bridge metal BM may have the same meaning as that a certain metal is disposed within the bridge metal layer BML, and the statement that a certain metal includes the sensor metal SM may have the same meaning as that a certain metal is disposed within the sensor metal layer SML.

[0267] Referring to FIGS. 10 and 11, the second touch interlayer insulating film 1020 can include an inorganic film. In contrast, the second touch interlayer insulating film 1020 can include an organic film.

[0268] Referring to FIGS. 10 and 11, when the second touch interlayer insulating film 1020 includes an organic film, noise between the sensor metal layer SML on the second touch interlayer insulating film 1020 and the bridge metal layer BML or the jumping metal layer JML under the second touch interlayer insulating film 1020 can be reduced. For example, parasitic capacitance between the sensor metal layer SML on the second touch interlayer insulating film 1020 and the bridge metal layer BML or the jumping metal layer JML under the second touch interlayer insulating film 1020 can be reduced.

[0269] Referring to FIGS. 10 and 11, the first touch interlayer insulating film 1010 can include an inorganic film. In contrast, the first touch interlayer insulating film 1010 can include an organic film.

[0270] Referring to FIGS. 10 and 11, when the first touch interlayer insulating film 1010 includes an organic film, noise between the sensor metal layer SML or the bridge metal layer BML on the first touch interlayer insulating film 1010 and the jumping metal layer JML under the first touch interlayer insulating film 1010 can be reduced. For example, when the first touch interlayer insulating film 1010 includes an organic film, parasitic capacitance between the sensor metal layer SML or the bridge metal layer BML on the first touch interlayer insulating film 1010 and the jumping metal layer JML under the first touch interlayer insulating film 1010 can be reduced.

[0271] Referring to FIG. 10, in order to form the first sensor electrode SE1, two adjacent first sub-sensor electrodes SUB1a and SUB1b are disposed on the second touch interlayer insulating film 1020, but can be electrically connected to the first bridge BRG1 disposed in the bridge metal layer BML through the contact hole of the second touch interlayer insulating film 1020.

[0272] Referring to FIG. 10, a third sensor electrode SE3 can be disposed between the two first sub-sensor electrodes SUB1a and SUB1b. Here, the two first sub-sensor electrodes SUB1a and SUB1b and the third sensor electrode SE3 can be disposed together in the sensor metal layer SML.

[0273] Referring to FIG. 10, a part of the first bridge BRG1 disposed in the bridge metal layer BML can overlap with the third sensor electrode SE3 disposed in the sensor metal layer SML.

[0274] Referring to FIG. 11, the mesh-shaped first sub-sensor electrode SUB1a included in the first sensor electrode SE1 is disposed on the second touch interlayer insulating film 1020, but through the contact holes of the second touch interlayer insulating film 1020 and the first touch interlayer insulating film 1010, it can be electrically connected to the first touch routing wiring TL1 disposed in the jumping metal layer JML.

[0275] Hereinafter, the vertical structure of the display panel 110 according to the foregoing embodiments of the present disclosure will be described in more detail with reference to FIGS. 12 to 19.

[0276] FIG. 12 is a plan view of the display panel 110 according to an embodiment of the present disclosure. In the following description, FIGS. 2A and 3 are also referred to together.

[0277] Referring to FIG. 12, the touch sensor according to an embodiment of the present disclosure can include m transmitting sensor electrodes SE_TX1 to SE_TXm and n receiving sensor electrodes SE_RX1 to SE_RXn. Here, m is a natural number of 2 or more, and n is a natural number of 2 or more.

[0278] Each of the n receiving sensor electrodes SE_RX1 to SE_RXn may be composed of a plurality of receiving sub-sensor electrodes SUB and at least one bridge BRG that electrically connects the plurality of receiving sub-sensor electrodes SUB.

[0279] Referring to FIG. 12, m or more transmitting touch routing wirings TL_TX1 to TL_TXm can electrically connect the m transmitting sensor electrodes SE_TX1 to SE_TXm and the transmitting pad PD_TX disposed in the pad region PA.

[0280] Referring to FIG. 12, m or more transmission touch routing wirings TL_TX1 to TL_TXm can extend to the pad region PA through the first touch routing region TRA1 in the first non-display region NDA1.

[0281] Referring to FIG. 12, n or more reception touch routing wirings TL_RX1 to TL_RXn can electrically connect n reception sensor electrodes SE_RX1 to SE_RXn and a reception pad PD_RX arranged in the pad region PA.

[0282] Referring to FIG. 12, n or more reception touch routing wirings TL_RX1 to TL_RXn can extend to the pad region PA in the first non-display region NDA1 across the display region DA in the first direction without passing through the second non-display region NDA2 and the fourth non-display region NDA4.

[0283] Referring to FIG. 12, contact holes CNT where n or more reception touch routing wirings TL_RX1 to TL_RXn are connected to n reception sensor electrodes SE_RX1 to SE_RXn can be arranged further outside the outermost first transmission sensor electrode SE_TX1 among m transmission sensor electrodes SE_TX1 to SE_TXm.

[0284] Thereby, n or more reception touch routing wirings TL_RX1 to TL_RXn can extend and be arranged to the pad region PA without passing through the first touch routing region TRA1 in the first non-display region NDA1. That is, n or more reception touch routing wirings TL_RX1 to TL_RXn do not have to overlap with m or more transmission touch routing wirings TL_TX1 to TL_TXm arranged in the first touch routing region TRA1.

[0285] Hereinafter, the first receiving sensor electrode SE_RX1 is defined as the first sensor electrode SE1, the second receiving sensor electrode SE_RX2 is defined as the second sensor electrode SE2, the nth receiving sensor electrode SE_RXn is defined as the fourth sensor electrode SE4, and the first transmitting sensor electrode SE_TX1 is defined as the third sensor electrode SE3. Also, the first receiving touch routing wiring TL_RX1 is defined as the first touch routing wiring TL1, the second receiving touch routing wiring TL_RX2 is defined as the second touch routing wiring TL2, the nth receiving touch routing wiring TL_RXn is defined as the fourth touch routing wiring TL4, and the first transmitting touch routing wiring TL_TX1 is defined as the third touch routing wiring TL3.

[0286] Figs. 13 to 15 are cross-sectional views of main parts of the display panel 110 in Fig. 12. When explaining with reference to Figs. 13 to 15, Figs. 2A and 3 are also referred to together.

[0287] Fig. 13 shows a vertical cross-sectional structure of a part of the display area DA and the first non-display area NDA1, and shows a vertical cross-sectional structure of an area where a part of the third sensor electrode SE3 and the third touch routing wiring TL3 are arranged. Fig. 14 shows a vertical cross-sectional structure of a part of the display area DA and the first non-display area NDA1, and shows a vertical cross-sectional structure of an area where a part of the fourth sensor electrode SE4 and the fourth touch routing wiring TL4 are arranged. Fig. 15 shows a vertical cross-sectional structure of a part of the display area DA and the first non-display area NDA1, and shows a vertical cross-sectional structure of an area where a part of the first sensor electrode SE1 and the first touch routing wiring TL1 are arranged.

[0288] Referring to Figs. 13 and 14, the substrate 111 includes the display area DA and the first non-display area NDA1 which is the outer area of the display area DA in the first direction. The first non-display area NDA1 can include the bending area BA and the pad area PA.

[0289] Referring to FIG. 15, the substrate 111 can further include a second non-display region NDA2 that is an outer region of the display region DA in the second direction and a fourth non-display region NDA4 that is an outer region of the display region DA in the direction opposite to the second direction. The second non-display region NDA2 and the fourth non-display region NDA4 do not include the bending region BA and the pad region PA.

[0290] Referring to FIGS. 13 to 15, the first transistor T1 can be disposed on the substrate 111. The first transistor T1 can include a first electrode E1, a second electrode E2, a third electrode E3, and an active layer ACT. The second electrode E2 is a gate electrode, the first electrode E1 is a source electrode or a drain electrode, and the third electrode E3 can be a drain electrode or a source electrode.

[0291] For example, when the first transistor T1 has a coplanar structure, the active layer ACT is disposed on the substrate 111, a gate insulating film 1310 is disposed on the active layer ACT, and the second electrode E2 corresponding to the gate electrode can be disposed on the gate insulating film 1310. An interlayer insulating film 1330 can be disposed on the second electrode E2. The first electrode E1 and the third electrode E3 can be disposed on the interlayer insulating film 1330. The first electrode E1 can be connected to a part of the active layer ACT through a contact hole in the interlayer insulating film 1330. The third electrode E3 can be connected to another part of the active layer ACT through another contact hole in the interlayer insulating film 1330.

[0292] A planarization film 1350 can be disposed on the first transistor T1.

[0293] Referring to FIGS. 13 to 15, a light-emitting element ED including a pixel electrode PE, an element intermediate layer EL, and a common electrode CE can be formed on the planarization film 1350.

[0294] The pixel electrode PE can be disposed on the planarization film 1350. The pixel electrode PE can be connected to the first electrode E1 of the first transistor T1 through the contact hole of the planarization film 1350.

[0295] The bank 1360 can be disposed on the pixel electrode PE. The bank 1360 can have an opening in the region where the light-emitting region of the light-emitting element ED of the sub-pixel SP is to be formed.

[0296] A part of the element intermediate layer EL can be connected to the upper surface of a part of the pixel electrode PE through the opening of the bank 1360. The common electrode CE can be disposed on the element intermediate layer EL.

[0297] Referring to FIGS. 13 to 15, the encapsulation layer 200 can be disposed on the common electrode CE. The encapsulation layer 200 may be a single layer or a multiple layer.

[0298] For example, when the encapsulation layer 200 is a multiple layer, the encapsulation layer 200 may have a structure in which an inorganic layer and an organic layer are alternately laminated. For example, the encapsulation layer 200 can include a first encapsulation layer 1371, a second encapsulation layer 1372, a third encapsulation layer 1373, etc. The first encapsulation layer 1371 and the third encapsulation layer 1373 may be inorganic layers, and the second encapsulation layer 1372 may be an organic layer. The second encapsulation layer 1372 may be thicker than the first encapsulation layer 1371 and the third encapsulation layer 1373.

[0299] The encapsulation layer 200 can extend from the display area DA to a partial area of the first non-display area NDA1.

[0300] The first encapsulation layer 1371 is disposed on the common electrode CE, and the first encapsulation layer 1371 can be disposed to cover the common electrode CE. The first encapsulation layer 1371 can extend to the first non-display area NDA1 and cover at least one dam D1, D2. The first encapsulation layer 1371 can extend to the pad area PA disposed outside the at least one dam D1, D2 and overlap with the pad PD4.

[0301] The second encapsulation layer 1372 can be disposed on the first encapsulation layer 1371. The second encapsulation layer 1372 can be formed with a sufficient thickness to prevent foreign particles from penetrating the first encapsulation layer 1371 and entering the organic material-containing element intermediate layer EL and the common electrode CE. The second encapsulation layer 1372 can be formed through a curing process after being applied in a liquid form through an inkjet process.

[0302] The third encapsulation layer 1373 can be disposed on the second encapsulation layer 1372. The third encapsulation layer 1373 can be disposed to cover the second encapsulation layer 1372. The third encapsulation layer 1373 can cover the second encapsulation layer 1372 and extend to the first non-display area NDA1 to cover at least one dam D1, D2. Also, the third encapsulation layer 1373 can extend to the pad area PA disposed outside the at least one dam D1, D2 and overlap with the pad PD3. At this time, the first encapsulation layer 1371 and the third encapsulation layer 1373 can be formed such that their end positions are the same.

[0303] For example, each of the first encapsulation layer 1371 and the third encapsulation layer 1373 can be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide.

[0304] For example, the second encapsulation layer 1372 can be formed of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0305] Referring to FIGS. 13 to 15, a touch sensor can be formed on the sealing layer 200. The touch sensor forming layer on the sealing layer 200 can include a touch buffer film 1000, a jumping metal layer JML, a first touch interlayer insulating film 1010, a bridge metal layer BML, a second touch interlayer insulating film 1020, a sensor metal layer SML, and a touch protection film 1030.

[0306] For forming the touch sensor, as shown in FIGS. 10 and 11, the touch buffer film 1000 can be disposed on the sealing layer 200, and as shown in FIGS. 13 to 15, the touch buffer film 1000 can also be omitted on the sealing layer 200.

[0307] The metal layer directly above the sealing layer 200 or the touch buffer film 1000 may be the jumping metal layer JML. The insulating layer directly above the jumping metal layer JML may be the first touch interlayer insulating film 1010. The metal layer directly above the first touch interlayer insulating film 1010 may be the bridge metal layer BML. The insulating layer directly above the bridge metal layer BML may be the second touch interlayer insulating film 1020. The metal layer directly above the second touch interlayer insulating film 1020 may be the sensor metal layer SML.

[0308] As described above with reference to FIG. 12, the n or more receiving touch routing wirings TL_RX1 to TL_RXn are arranged to extend to the pad region PA without passing through the first touch routing region TRA1 in the first non-display region NDA1, so that the n or more receiving touch routing wirings TL_RX1 to TL_RXn can be prevented from overlapping with the m or more transmitting touch routing wirings TL_TX1 to TL_TXm arranged in the first touch routing region TRA1.

[0309] The first touch interlayer insulating film 1010 can also be composed of an inorganic film having a thickness thinner than that of an organic film. Of course, the first touch interlayer insulating film 1010 may be composed of an organic film.

[0310] The second touch interlayer insulating film 1020 may be an inorganic film or an organic film.

[0311] When the first touch interlayer insulating film 1010 and / or the second touch interlayer insulating film 1020 is / are composed of an inorganic film, the inorganic film can be formed from silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide.

[0312] First, referring to FIG. 13, let's look at the vertical cross-sectional structure of the region where a part of the third sensor electrode SE3 and the third touch routing wiring TL3 are arranged.

[0313] Referring to FIG. 13, in the display area DA, a mesh-type third sensor electrode SE3 and a mesh-type fourth sensor electrode SE4 can be arranged.

[0314] The mesh-type third sensor electrode SE3 and the mesh-type fourth sensor electrode SE4 are arranged in the sensor metal layer SML and can include the sensor metal SM.

[0315] Within the display area DA, the mesh-type third sensor electrode SE3 can be arranged to extend in the first direction. Within the display area DA, the mesh-type fourth sensor electrode SE4 can be arranged to extend in the second direction.

[0316] Referring to FIG. 13, the touch protection film 1030 can be arranged on the sensor electrode SE including the third sensor electrode SE3 and the fourth sensor electrode SE4. The touch protection film 1030 can block a harmful external environment to protect the touch sensor and maintain the stability of the characteristics of the display device 100. For example, the touch protection film 1030 may be an organic film. The touch protection film 1030 can also be extended and arranged to the non-display area NDA.

[0317] Referring to FIG. 13, within the display area DA or the first non-display area NDA1, the mesh-type third sensor electrode SE3 or the third touch routing wiring TL3 integrated with the mesh-type third sensor electrode SE3 can be electrically connected to the third pad PD3 disposed in the pad area PA.

[0318] According to the illustration of FIG. 13, the third sensor electrode SE3 may be the first transmission sensor electrode SE_TX1, the third touch routing wiring TL3 may be the first transmission touch routing wiring TL_TX1, and the fourth sensor electrode SE4 may be the nth reception sensor electrode SE_RXn.

[0319] Referring to FIG. 13, within the first non-display area NDA1, the third touch routing wiring TL3 can be disposed along the first inclined surface SLP1 of the encapsulation layer 200.

[0320] Referring to FIG. 13, the third touch routing wiring TL3 can be electrically connected to the third pad PD3 disposed in the pad area PA via the connection pattern 1340a disposed on the outer contour of the encapsulation layer 200. Here, the connection pattern 1340a is disposed on the outer contour of the encapsulation layer 200 and can be disposed on the interlayer insulating film 1330.

[0321] The third touch routing wiring TL3 may be of a single wiring type or a multi-wiring type.

[0322] For example, when the third touch routing wiring TL3 is of a single wiring type, the third touch routing wiring TL3 can be disposed within the bridge metal layer BML.

[0323] For example, as shown in FIG. 13, when the third touch routing wiring TL3 is of a multi-layer wiring type, the third touch routing wiring TL3 can include a third lower sub-wiring TL3a and a third upper sub-wiring TL3b that are electrically connected to each other. The third lower sub-wiring TL3a can be disposed within the bridge metal layer BML, which is the second metal layer, and the third upper sub-wiring TL3b can be disposed within the sensor metal layer SML, which is the first metal layer.

[0324] Referring to FIG. 13, the third lower sub-wiring TL3a can be disposed on the first touch interlayer insulating film 1010, and the third upper sub-wiring TL3b can be disposed on the second touch interlayer insulating film 1020.

[0325] Referring to FIG. 13, the third lower sub-wiring TL3a and the third upper sub-wiring TL3b are disposed above and below the second touch interlayer insulating film 1020 and separated therefrom, but can be electrically connected to each other through a contact hole in the second touch interlayer insulating film 1020 therebetween. Thereby, the resistance of the third touch routing wiring TL3 can be reduced.

[0326] Referring to FIG. 13, at least one of the third lower sub-wiring TL3a and the third upper sub-wiring TL3b can be disposed on the outer contour of the sealing layer 200 in the first non-display area NDA1 and can be electrically connected to a connection pattern 1340a located on the interlayer insulating film 1330.

[0327] Referring to FIG. 13, the connection pattern 1340a can be disposed across the bending area BA and the pad area PA.

[0328] Referring to FIG. 13, the display panel 110 may have a dam area DAM that is disposed in the non-display area NDA but surrounds the display area DA. At least one dam D1, D2 may be disposed in the dam area DAM.

[0329] At least one of the dams D1, D2 is included in the sealing layer 200 and can block the flow of the second sealing layer 1372 which may be an organic film. That is, at least one of the dams D1, D2 can prevent the collapse of the second sealing layer 1372 which may be an organic film. Thereby, at least one of the dams D1, D2 can prevent the second sealing layer 1372 which is an organic film from being exposed to the outside of the display device 100 or entering the pad region PA.

[0330] At least one of the dams D1, D2 can be disposed.

[0331] The first dam D1 can be disposed near the outer contour portion of the second sealing layer 1372 included in the sealing layer 200. The first dam D1 is disposed so as to surround the outer contour of the display area DA and can primarily block the flow of the second sealing layer 1372. Also, the first dam D1 is disposed between the display area DA and the pad region PA and can primarily block the flow of the second sealing layer 1372 so that the second sealing layer 1372 does not enter the pad region PA.

[0332] The second dam D2 is disposed so as to surround the outer contour of the first dam D1 and can be arranged side by side at a distance from the first dam D1. The second dam D2 can secondarily block the second sealing layer 1372 that overflows the outer contour of the first dam D1. Thereby, the first dam D1 and the second dam D2 can more effectively block the second sealing layer 1372 from being exposed to the outside of the display device 100 or entering the pad region PA.

[0333] At least one of the dams D1, D2 can be formed simultaneously with the planarization film 1350 or the bank 1360 and can be made of the same material as the planarization film 1350 or the bank 1360. In such a case, at least one of the dams D1, D2 can be formed of an organic material such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0334] The third touch routing wiring TL3 is formed to extend from above the encapsulation layer 200 to at least above one of the dams D1 and D2, and can be electrically connected to a connection pattern 1340a disposed at the lower part by a contact hole of the second touch interlayer insulating film 1020. Thereby, the third touch routing wiring TL3 may not be disposed in the bending region BA.

[0335] Referring to FIG. 13, the bending region BA may include a bending film 1351 on the substrate 111, a third touch routing wiring TL3 extending between the encapsulation layer 200 and the bending film 1351, and a connection pattern 1340a that electrically connects the third pad PD3 disposed in the pad region PA. The connection pattern 1340a may be located between the substrate 111 and the bending film 1351.

[0336] The third touch routing wiring TL3 can be electrically connected to the third pad PD3 in the pad region PA via the connection pattern 1340a. Here, a touch drive circuit 160 may be directly or indirectly connected to the third pad PD3.

[0337] The third pad PD3 can be disposed on at least one of a sensor metal layer SML, a bridge metal layer BML, and a jumping metal layer JML.

[0338] The connection pattern 1340a can be disposed on a fourth metal layer different from the sensor metal layer SML, the bridge metal layer BML, and the jumping metal layer JML. Here, although each transistor included in each of the plurality of sub-pixels SP includes a source electrode, a drain electrode, and a gate electrode, the fourth metal layer can include at least one of a gate metal layer on which the gate electrode is disposed and a source-drain metal layer on which the source electrode and the drain electrode are disposed.

[0339] For example, the connection pattern 1340a may be a single connection pattern including the same material as the source-drain electrode of the first transistor T1. Alternatively, the connection pattern 1340a may be composed of a first connection pattern including the same material as the source-drain electrode of the first transistor T1 and a second connection pattern including the same material as the gate electrode or gate line GL of the first transistor T1. Here, the first connection pattern and the second connection pattern are respectively disposed above and below the interlayer insulating film 1330 and can be electrically connected through the contact hole of the interlayer insulating film 1330.

[0340] A bending film 1351 can be disposed on a part of the connection pattern 1340a.

[0341] The bending film 1351 is disposed in the bending region BA, disposed between the dams D1, D2 and the pad PD4, and can be disposed to cover a part of the upper portion of the connection pattern 1340a. The bending film 1351 can play a role of preventing and protecting the connection pattern 1340a from being externally exposed in the bending region BA where the substrate 111 bends. Further, the bending film 1351 may be provided with an open hole OH where the upper portion is exposed. That is, the open hole OH can be formed by removing the inorganic film (for example, the first sealing layer 1371, the third sealing layer 1373, and the second touch interlayer insulating film 1020) that can be disposed on the upper portion of the bending film 1351. When an inorganic film is disposed on the upper portion of the bending film 1351, when the bending region BA is bent, cracks may occur in the inorganic film, and moisture or the like may penetrate into the cracked inorganic film. Therefore, the inorganic film disposed on the upper portion of the bending film 1351 is removed.

[0342] There may further be a pattern protection film covering a part of the connection pattern 1340a. The pattern protection film can be disposed to surround the end of the connection pattern 1340a. The pattern protection film can protect the end of the connection pattern 1340a disposed at the edge of the first non-display region NDA1.

[0343] The bending film 1351 and the pattern protection film can be arranged in the same layer as the planarization film 1350 and can be composed of the same material. For example, the planarization film 1350, the bending film 1351, and the pattern protection film can be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0344] In the pad region PA, the third pad PD3 can be electrically connected to the connection pattern 1340a through a pad contact hole that penetrates the first sealing layer 1371, the third sealing layer 1373, and the second touch layer insulating film 1020.

[0345] Next, referring to FIG. 14, a vertical cross-sectional structure of a region where a part of the fourth sensor electrode SE4 and the fourth touch routing wiring TL4 are arranged will be viewed. Descriptions of structural features similar to those in FIG. 13 may be omitted.

[0346] Referring to FIG. 14, in the display region DA, a mesh-type fourth sensor electrode SE4 and a mesh-type third sensor electrode SE3 can be arranged.

[0347] The mesh-type fourth sensor electrode SE4 and the mesh-type third sensor electrode SE3 are arranged within the sensor metal layer SML and can include the sensor metal SM.

[0348] Within the display region DA, the mesh-type third sensor electrode SE3 can be arranged to extend in the first direction. Within the display region DA, the mesh-type fourth sensor electrode SE4 can be arranged to extend in the second direction.

[0349] Referring to FIG. 14, in the display area DA or the first non-display area NDA1, the fourth touch routing wiring TL4 that is electrically connected to the mesh-type fourth sensor electrode SE4 can be electrically connected to the fourth pad PD4 disposed in the pad area PA.

[0350] According to the illustration of FIG. 14, the fourth sensor electrode SE4 may be the nth receiving sensor electrode SE_RXn, the fourth touch routing wiring TL4 may be the nth receiving touch routing wiring TL_RXn, and the third sensor electrode SE3 may be the first transmitting sensor electrode SE_TX1.

[0351] The fourth sensor electrode SE4 shown in FIG. 14 may be a plurality of fourth sub-sensor electrodes SUB disposed in the sensor metal layer SML. In the display area DA, the fourth sensor electrode SE4 can be electrically connected to the fourth touch routing wiring TL4.

[0352] Referring to FIG. 14, in the display area DA, the fourth touch routing wiring TL4 connected to the plurality of fourth sub-sensor electrodes SUB disposed in the sensor metal layer SML, which is the first metal layer included in the fourth sensor electrode SE4, may be the fourth lower sub-wiring TL4a disposed in the jumping metal layer JML, which is the third metal layer.

[0353] Referring to FIG. 14, the fourth lower sub-wiring TL4a may be disposed on the sealing layer 200 or the touch buffer film 1000 and under the first touch interlayer insulating film 1010.

[0354] Referring to FIG. 14, in the display area DA, the plurality of fourth sub-sensor electrodes SUB of the fourth sensor electrode SE4 can be electrically connected to the fourth lower sub-wiring TL4a of the fourth touch routing wiring TL4 through the contact holes of the first touch interlayer insulating film 1010 and the second touch interlayer insulating film 1020.

[0355] Referring to FIG. 14, the fourth lower sub-wiring TL4a of the fourth touch routing wiring TL4 disposed in the display area DA can extend to the first non-display area NDA1 and be disposed.

[0356] The fourth lower sub-wiring TL4a of the fourth touch routing wiring TL4 extending to the first non-display area NDA1 can descend along the first inclined surface SLP1 of the sealing layer 200 and be electrically connected to the connection pattern 1340b.

[0357] The connection pattern 1340b can be disposed in the bending area BA and the pad area PA within the first non-display area NDA1.

[0358] Within the first non-display area NDA1, the fourth touch routing wiring TL4 may be of a single wiring type or a multi-wiring type.

[0359] For example, when the fourth touch routing wiring TL4 is of a single wiring type within the first non-display area NDA1, within the first non-display area NDA1, the fourth touch routing wiring TL4 can be disposed in the jumping metal layer JML.

[0360] For example, when the fourth touch routing wiring TL4 is of a multi-wiring type within the first non-display area NDA1, the fourth touch routing wiring TL4 can include a fourth lower sub-wiring TL4a and a fourth upper sub-wiring TL4b that are electrically connected.

[0361] The fourth lower sub-wiring TL4a can be disposed in the jumping metal layer JML which is the third metal layer, and the fourth upper sub-wiring TL4b can be disposed in the sensor metal layer SML which is the first metal layer.

[0362] On the first inclined surface SLP1 of the sealing layer 200, the fourth lower sub-wiring TL4a and the fourth upper sub-wiring TL4b that constitute the fourth touch routing wiring TL4 can be electrically connected through at least one contact hole in the first touch interlayer insulating film 1010 and the second touch interlayer insulating film 1020.

[0363] At least one of the fourth lower sub-wiring TL4a and the fourth upper sub-wiring TL4b that constitute the fourth touch routing wiring TL4 can be electrically connected to the fourth pad PD4 in the pad region PA through the connection pattern 1340b. Here, the touch driving circuit 160 may be directly or indirectly connected to the fourth pad PD4.

[0364] The fourth pad PD4 can be disposed on at least one of the sensor metal layer SML, the bridge metal layer BML, and the jumping metal layer JML.

[0365] The third touch routing wiring TL3 is formed to extend from above the sealing layer 200 to at least above one of the dams D1 and D2, and can be electrically connected to the connection pattern 1340a disposed below by the contact hole in the second touch interlayer insulating film 1020. Thereby, the third touch routing wiring TL3 may not be disposed in the bending region BA.

[0366] Referring to FIG. 14, the bending region BA can include the bending film 1351 on the substrate 111, the fourth touch routing wiring TL4 extending between the sealing layer 200 and the bending film 1351, and the connection pattern 1340b that electrically connects the fourth pad PD4 disposed in the pad region PA. The connection pattern 1340b can be located between the substrate 111 and the bending film 1351.

[0367] Next, referring to FIG. 15, the internal touch routing structure will be described. For this purpose, a vertical cross-sectional structure of a region where a part of the first sensor electrode SE1 and the first touch routing wiring TL1 are disposed will be described. Descriptions of the same structural features as those in FIGS. 13 and 14 may be omitted.

[0368] Referring to FIG. 15, in the display area DA, the mesh-type first sensor electrode SE1 and the mesh-type third sensor electrode SE3 can be arranged.

[0369] The mesh-type first sensor electrode SE1 and the mesh-type third sensor electrode SE3 are arranged in the sensor metal layer SML and can include the sensor metal SM.

[0370] In the display area DA, the mesh-type third sensor electrode SE3 can be arranged to extend in the first direction. In the display area DA, the mesh-type first sensor electrode SE1 can be arranged to extend in the second direction.

[0371] Referring to FIG. 15, in the display area DA, the first touch routing wiring TL1 electrically connected to the mesh-type first sensor electrode SE1 can be arranged to extend in the first direction.

[0372] The first touch routing wiring TL1 does not detour around the second non-display area NDA2 located on the outer periphery in the second direction from the display area DA and the fourth non-display area NDA4 located on the outer periphery in the direction opposite to the second direction from the display area DA, and can extend through the display area DA in the first direction to the first non-display area NDA1.

[0373] The first touch routing wiring TL1 can extend to the first non-display area NDA1 and be electrically connected to the first pad PD1 arranged in the pad area PA in the first non-display area NDA1.

[0374] According to the example of FIG. 15, the first sensor electrode SE1 may be the first receiving sensor electrode SE_RX1, the first touch routing wiring TL1 may be the first receiving touch routing wiring TL_RX1, and the third sensor electrode SE3 may be the first transmitting sensor electrode SE_TX1.

[0375] The first sensor electrode SE1 shown in FIG. 15 may be a plurality of first sub-sensor electrodes SUB arranged in the sensor metal layer SML. In the display area DA, the first sensor electrode SE1 can be electrically connected to the first touch routing wiring TL1.

[0376] Referring to FIG. 15, in the display area DA, the first touch routing wiring TL1 connected to the plurality of first sub-sensor electrodes SUB arranged in the sensor metal layer SML, which is the first metal layer included in the first sensor electrode SE1, may be the first lower sub-wiring arranged in the jumping metal layer JML, which is the third metal layer.

[0377] The first touch routing wiring TL1 can be configured and arranged in the same manner as the fourth touch routing wiring TL4 shown in FIG. 14.

[0378] The first touch routing wiring TL1 may be of a single wiring type or a multi-wiring type.

[0379] For example, when the first touch routing wiring TL1 is of a single wiring type, the first touch routing wiring TL1 can be arranged in the jumping metal layer JML.

[0380] For example, when the first touch routing wiring TL1 is of a multi-wiring type, the first touch routing wiring TL1 can include a first lower sub-wiring and a first upper sub-wiring that are electrically connected. The first lower sub-wiring can be arranged in the jumping metal layer JML, which is the third metal layer, and the first upper sub-wiring can be arranged in the sensor metal layer SML, which is the first metal layer.

[0381] In the first non-display area NDA1, the first touch routing wiring TL1 can be electrically connected to the first pad PD1 arranged in the pad area PA through a connection pattern.

[0382] As shown in FIG. 15, according to the internal touch routing structure according to an embodiment of the present disclosure, in a second non-display area NDA2 located on an outer contour in a second direction of a display area DA (for example, a right outer contour of the display area DA) and a fourth non-display area NDA4 located on an outer contour in a direction opposite to the second direction of the display area DA (for example, a left outer contour of the display area DA), touch routing wirings are not arranged. Thereby, the sizes of the second non-display area NDA2 which is a right bezel area and the fourth non-display area NDA4 which is a left bezel area can be significantly reduced.

[0383] FIG. 16 is a plan view of a display panel 110 according to an embodiment of the present disclosure, and FIGS. 17 to 19 are cross-sectional views of main portions of the display panel 110 in FIG. 16.

[0384] FIG. 16 is a plan view showing an embodiment different from FIG. 12, and FIGS. 17 to 19 are cross-sectional views showing embodiments different from FIGS. 13 to 15, respectively.

[0385] Referring to FIG. 16, n or more reception touch routing wirings TL_RX1 to TL_RXn can extend across the display area DA in the first direction to a pad area PA in the first non-display area NDA1 without passing through the second non-display area NDA2 and the fourth non-display area NDA4.

[0386] Referring to FIG. 16, different from FIG. 12, a part of contact holes CNT connecting n or more reception touch routing wirings TL_RX1 to TL_RXn and n reception sensor electrodes SE_RX1 to SE_RXn can be located further outside a first transmission sensor electrode SE_TX1 which is arranged on the outermost side among m transmission sensor electrodes SE_TX1 to SE_TXm. However, another part of the contact holes CNT connecting n or more reception touch routing wirings TL_RX1 to TL_RXn and n reception sensor electrodes SE_RX1 to SE_RXn can be located further inside the first transmission sensor electrode SE_TX1 which is arranged on the outermost side among m transmission sensor electrodes SE_TX1 to SE_TXm.

[0387] As a result, as shown in FIG. 16, at least a part of n or more reception touch routing wirings TL_RX1 to TL_RXn can be arranged to extend to the pad region PA through the first touch routing region TRA1 in the first non-display region NDA1.

[0388] In the first non-display region NDA1, at least a part of n or more reception touch routing wirings TL_RX1 to TL_RXn can overlap with m or more transmission touch routing wirings TL_TX1 to TL_TXm arranged in the first touch routing region TRA1.

[0389] Thus, in the first non-display region NDA1, noise (e.g., parasitic capacitance) can occur between the reception touch routing wiring and the transmission touch routing wiring that overlap each other.

[0390] In the display panel 110 according to the embodiment of the present disclosure, in order to reduce the noise between the reception touch routing wiring and the transmission touch routing wiring that overlap each other, the first touch interlayer insulating film 1010 located between the reception touch routing wiring (sub-wiring arranged in the jumping metal layer JML) and the transmission touch routing wiring (sub-wiring arranged in the bridge metal layer BML) in the first non-display region NDA1 can be composed of an insulating film for noise removal.

[0391] As a result, the first touch interlayer insulating film 1010 can include an organic film.

[0392] For example, the first touch interlayer insulating film 1010 can be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide.

[0393] The vertical cross-sectional structure shown in FIG. 17 is the same as the vertical cross-sectional structure shown in FIG. 13. However, the first touch interlayer insulating film 1010 shown in FIG. 17 is formed of an organic film, while the first touch interlayer insulating film 1010 shown in FIG. 13 is formed of an inorganic film.

[0394] The vertical cross-sectional structure shown in FIG. 18 is the same as the vertical cross-sectional structure shown in FIG. 14. However, the first touch interlayer insulating film 1010 shown in FIG. 18 is formed of an organic film, while the first touch interlayer insulating film 1010 shown in FIG. 14 is formed of an inorganic film.

[0395] The vertical cross-sectional structure shown in FIG. 19 is the same as the vertical cross-sectional structure shown in FIG. 15. However, the first touch interlayer insulating film 1010 shown in FIG. 19 is formed of an organic film, while the first touch interlayer insulating film 1010 shown in FIG. 15 is formed of an inorganic film.

[0396] Referring to FIG. 18, in the first non-display area NDA1, the third lower sub-wiring TL3a of the third touch routing wiring TL3, which is the first reception touch routing wiring TL_TX1, may be present between the fourth lower sub-wiring TL4a and the fourth upper sub-wiring TL4b that constitute the fourth touch routing wiring TL4.

[0397] That is, in the first non-display area NDA1, at least one of the fourth lower sub-wiring TL4a and the fourth upper sub-wiring TL4b that constitute the fourth touch routing wiring TL4 can overlap with the third lower sub-wiring TL3a of the third touch routing wiring TL3, which is the first transmission touch routing wiring TL_TX1.

[0398] In other words, in the first non-display area NDA1, the fourth touch routing wiring TL4, which is the nth reception touch routing wiring TL_RXn, and the third touch routing wiring TL3, which is the first transmission touch routing wiring TL_TX1, can overlap.

[0399] However, in the first non-display area NDA1, since the first touch interlayer insulating film 101 located between the fourth touch routing wiring TL4 which is the nth reception touch routing wiring TL_RXn and the third touch routing wiring TL3 which is the first transmission touch routing wiring TL_TX1 is composed of a noise removal insulating film, noise between the fourth touch routing wiring TL4 which is the nth reception touch routing wiring TL_RXn and the first transmission touch routing wiring TL_TX1 can be reduced.

[0400] FIG. 20 shows a touch drive circuit according to an embodiment of the present disclosure.

[0401] Referring to FIG. 20, a touch drive circuit 160 according to an embodiment of the present disclosure can include a drive unit 2010 configured to output a touch drive signal TDS having a fluctuating voltage level to at least one of a plurality of transmission pads PD_TX and a sensing unit 2020 configured to sense at least one of a plurality of reception pads PD_RX.

[0402] For example, the drive unit 2010 can include an output buffer including an amplifier or the like.

[0403] For example, the sensing unit 2020 can include at least one charge amplifier including an operational amplifier and a feedback capacitor, and an analog-to-digital converter or the like. For example, the sensing unit 2020 can further include at least one integrator for integrating an output signal of at least one charge amplifier.

[0404] For example, the sensing unit 2020 can further include a first selection circuit for selecting at least one of a plurality of transmission pads PD_TX. The first selection circuit can include a switch circuit or a multiplexer circuit or the like.

[0405] For example, the sensing unit 2020 can further include a sample and hold circuit for storing a plurality of integration values output from a plurality of integrators, and a second selection circuit for selecting at least one of the plurality of integration values stored in the sample and hold circuit and providing it to an analog-to-digital converter. The second selection circuit can include a switch circuit or a multiplexer circuit, etc.

[0406] The touch driving circuit 160 can further include a signal generating unit that generates a touch driving signal TDS.

[0407] FIG. 21 shows the substrate 111 and the sealing layer 200 of the display panel 110 according to an embodiment of the present disclosure.

[0408] Referring to FIG. 21, the non-display area NDA can include a first non-display area NDA1 located in the first direction from the display area DA, a second non-display area NDA2 located in the second direction from the display area DA, a third non-display area NDA3 located in the opposite direction of the first direction from the display area DA, and a fourth non-display area NDA4 located in the opposite direction of the second direction from the display area DA.

[0409] Referring to FIG. 21, the sealing layer 200 is disposed in the display area DA, but can extend to a partial area of the non-display area NDA.

[0410] Referring to FIG. 21, the sealing layer 200 includes a first inclined surface SLP1 located at the outer contour in the first direction with respect to the center, a second inclined surface SLP2 located at the outer contour in the second direction intersecting the first direction with respect to the center, a third inclined surface SLP3 located at the outer contour in the opposite direction of the first direction with respect to the center, and a fourth inclined surface SLP4 located at the outer contour in the opposite direction of the second direction with respect to the center. Referring to FIG. 21, the first inclined surface SLP1, the second inclined surface SLP2, the third inclined surface SLP3, and the fourth inclined surface SLP4 of the sealing layer 200 can be located in the non-display area NDA.

[0411] Referring to FIG. 21, among the first inclined surface SLP1, the second inclined surface SLP2, the third inclined surface SLP3, and the fourth inclined surface SLP4 of the sealing layer 200, no metal (for example, touch routing wiring) is disposed on the second inclined surface SLP2 and the fourth inclined surface SLP4, and a touch routing wiring TL extending in the first direction can pass through the first inclined surface SLP1.

[0412] For example, the first touch routing wiring TL1 is not disposed on the second inclined surface SLP2 and the fourth inclined surface SLP4, and can descend along the first inclined surface SLP1 and be electrically connected to the second pad PD2 in the pad region PA.

[0413] Briefly describing the embodiments of the present disclosure described above, it is as follows.

[0414] A display device according to an embodiment of the present disclosure includes a substrate including a display area in which a plurality of sub-pixels are arranged and a non-display area including a pad area located in a first direction from the display area, a first sensor electrode disposed in the display area and including a plurality of first sub-sensor electrodes arranged in a second direction intersecting the first direction and at least one first bridge electrically connecting the plurality of first sub-sensor electrodes, a first pad disposed in the pad area, and a first touch routing wiring electrically connecting at least one of the plurality of first sub-sensor electrodes and the first pad.

[0415] The plurality of first sub-sensor electrodes can be disposed in a first metal layer. The first bridge can be disposed in a second metal layer different from the first metal layer.

[0416] The first touch routing wiring can be disposed across the display area in the first direction and electrically connected to the first pad, and includes a metal disposed in a third metal layer different from the first metal layer and the second metal layer.

[0417] The first touch routing wiring may be of a single wiring type or a multi-wiring type.

[0418] For example, when the first touch routing wiring is of a single wiring type, the first touch routing wiring can include metal disposed within the third metal layer.

[0419] For example, when the first touch routing wiring is of a multi-wiring type, the first touch routing wiring can include a first lower sub-wiring disposed within the third metal layer and a first upper sub-wiring disposed within the first metal layer. Here, the first lower sub-wiring and the first upper sub-wiring can be electrically connected.

[0420] The display device according to an embodiment of the present disclosure further can include a second sensor electrode including a plurality of second sub-sensor electrodes arranged in a second direction and disposed in a display region, and at least one second bridge for electrically connecting the plurality of second sub-sensor electrodes, a second pad disposed in a pad region, and a second touch routing wiring for electrically connecting at least one of the plurality of second sub-sensor electrodes and the second pad.

[0421] The second sensor electrode can be disposed closer to the pad region than the first sensor electrode.

[0422] The plurality of second sub-sensor electrodes can be disposed within the first metal layer. The second bridge can be disposed within the second metal layer.

[0423] The second touch routing wiring is disposed across the display region in a first direction, is electrically connected to the second pad, and can include metal disposed within the third metal layer.

[0424] The first touch routing wiring can overlap at least one of the plurality of second sub-sensor electrodes.

[0425] The display device according to an embodiment of the present disclosure may further include a third sensor electrode disposed in a first direction and passing between two adjacent first sub-sensor electrodes among a plurality of first sub-sensor electrodes, a third pad disposed in a pad region, and a third touch routing wiring electrically connecting the third sensor electrode and the third pad.

[0426] The third sensor electrode may overlap with the first bridge.

[0427] The third touch routing wiring may include a metal disposed in a metal layer different from that of the first touch routing wiring. For example, the third touch routing wiring may include a metal disposed in the second metal layer.

[0428] The third touch routing wiring may be of a single wiring type or a multi-wiring type.

[0429] For example, when the third touch routing wiring is of a single wiring type, the third touch routing wiring may include a metal disposed in the second metal layer.

[0430] For example, when the third touch routing wiring is of a multi-wiring type, the third touch routing wiring may include a third lower sub-wiring disposed in the second metal layer and a third upper sub-wiring disposed in the first metal layer. Here, the third lower sub-wiring and the third upper sub-wiring can be electrically connected.

[0431] The third sensor electrode may overlap with the first touch routing wiring.

[0432] The display device according to an embodiment of the present disclosure may further include a circuit (which may include a touch driving circuit) connected to the pad region and configured to supply a signal with a fluctuating voltage level to one of the first sensor electrode and the third sensor electrode.

[0433] In the display device according to an embodiment of the present disclosure, the non-display area may include a first non-display area located in a first direction from the display area, a second non-display area located in a second direction from the display area, a third non-display area located in a direction opposite to the first direction from the display area, and a fourth non-display area located in a direction opposite to the second direction from the display area.

[0434] The pad area may be included in the first non-display area.

[0435] The first touch routing wiring can extend to the first non-display area across the display area without detouring around the second non-display area and the fourth non-display area.

[0436] The display device according to an embodiment of the present disclosure may further include a ground wiring disposed in the non-display area.

[0437] The ground wiring can be disposed from one location of the pad area to another location of the pad area via the second non-display area, the third non-display area, and the fourth non-display area.

[0438] The first non-display area may include a bending area between the display area and the pad area.

[0439] The bending area may include a bending film on the substrate and a connection pattern located between the substrate and the bending film. The connection pattern can electrically connect the first touch routing wiring and the first pad.

[0440] The first pad can be disposed on at least one of the first metal layer, the second metal layer, and the third metal layer.

[0441] The connection pattern can be disposed on a fourth metal layer different from the first metal layer, the second metal layer, and the third metal layer.

[0442] For example, when each of a plurality of sub-pixels includes a transistor including a source electrode, a drain electrode, and a gate electrode, the fourth metal layer on which a connection pattern is disposed may include at least one of a gate metal layer on which the gate electrode is disposed and a source-drain metal layer on which the source electrode and the drain electrode are disposed.

[0443] The display device according to an embodiment of the present disclosure may further include a light-emitting element, a sealing layer on the light-emitting element, a first touch interlayer insulating film on the sealing layer, a second touch interlayer insulating film on the first touch interlayer insulating film, and a touch protection film on the second touch interlayer insulating film.

[0444] The third metal layer may be disposed between the sealing layer and the first touch interlayer insulating film.

[0445] The second metal layer may be disposed between the first touch interlayer insulating film and the second touch interlayer insulating film.

[0446] The first metal layer may be disposed between the second touch interlayer insulating film and the touch protection film.

[0447] The display device according to an embodiment of the present disclosure may further include a touch buffer film between the sealing layer and the first touch interlayer insulating film.

[0448] For example, the second touch interlayer insulating film may include an organic film.

[0449] For example, the first touch interlayer insulating film may include an inorganic film.

[0450] As another example, the first touch interlayer insulating film may include an organic film.

[0451] The sealing layer included in the display device according to an embodiment of the present disclosure may include a first inclined surface located at the outer contour in the first direction with respect to the center, a second inclined surface located at the outer contour in the second direction intersecting the first direction with respect to the center, a third inclined surface located at the outer contour in the opposite direction of the first direction with respect to the center, and a fourth inclined surface located at the outer contour in the opposite direction of the second direction with respect to the center.

[0452] The first touch routing wiring is not disposed on the second inclined surface and the fourth inclined surface, and can descend along the first inclined surface and be electrically connected to a first pad located at the outer contour of the first inclined surface.

[0453] Each of the plurality of first sub-sensor electrodes may be disposed in the first metal layer and include a mesh-shaped sensor metal having an opening.

[0454] The first bridge is disposed in the second metal layer, but can be disposed avoiding at least one of the openings.

[0455] The first touch routing wiring is disposed in the third metal layer, but can be disposed avoiding at least one of the openings.

[0456] The display panel according to an embodiment of the present disclosure includes a substrate including a display area in which a plurality of sub-pixels are disposed and a non-display area including a pad area located in the first direction from the display area, a first touch interlayer insulating film on the substrate, a second touch interlayer insulating film on the first touch interlayer insulating film, a touch protection film on the second touch interlayer insulating film, a first metal layer between the second touch interlayer insulating film and the touch protection film, a second metal layer between the first touch interlayer insulating film and the second touch interlayer insulating film, a third metal layer on the substrate and the first touch interlayer insulating film, a plurality of first sub-sensor electrodes disposed in the first metal layer, and a first sensor electrode including a first bridge disposed in the second metal layer and electrically connecting the plurality of first sub-sensor electrodes, and a first touch routing wiring including a metal disposed in the third metal layer and electrically connected to the first sensor electrode and extending in the first direction within the display area.

[0457] The display panel according to an embodiment of the present disclosure may further include a plurality of second sub-sensor electrodes disposed in the first metal layer, a second sensor electrode including a second bridge disposed in the second metal layer and electrically connecting the plurality of second sub-sensor electrodes, and a second touch routing wiring including a metal disposed in the third metal layer and extending in a first direction within the display area and electrically connected to the second sensor electrode.

[0458] According to the internal touch routing structure, the first touch routing wiring may overlap with the plurality of second sub-sensor electrodes.

[0459] The display panel according to an embodiment of the present disclosure may further include a third sensor electrode disposed in the first metal layer, a third touch routing wiring including a metal disposed in a second metal layer different from the third metal layer and electrically connected to the third sensor electrode, a fourth sensor electrode including a plurality of fourth sub-sensor electrodes disposed in the first metal layer and a second bridge disposed in the second metal layer and electrically connecting the plurality of fourth sub-sensor electrodes, and a fourth touch routing wiring including a metal disposed in the third metal layer and extending in a first direction within the display area and electrically connected to the fourth sensor electrode.

[0460] The first sensor electrode, the second sensor electrode, and the fourth sensor electrode may intersect with the third sensor electrode.

[0461] For example, the first sensor electrode, the second sensor electrode, and the fourth sensor electrode may be receiving sensor electrodes, and the third sensor electrode may be a transmitting sensor electrode.

[0462] As another example, the first sensor electrode, the second sensor electrode, and the fourth sensor electrode may be transmitting sensor electrodes, and the third sensor electrode may be a receiving sensor electrode.

[0463] The display panel according to an embodiment of the present disclosure may further include a first contact hole where the first sensor electrode is connected to the first touch routing wiring and a second contact hole where the fourth sensor electrode is connected to the fourth touch routing wiring.

[0464] For example, both the first contact hole and the second contact hole may be located on one side of the third sensor electrode, and the first touch interlayer insulating film may include an inorganic film.

[0465] In this case, the third touch routing wiring and the fourth touch routing wiring may not overlap.

[0466] As another example, the first contact hole may be located on one side of the third sensor electrode, the second contact hole may be located on the other side of the third sensor electrode, and the first touch interlayer insulating film may include an organic film.

[0467] In this case, the third touch routing wiring and the fourth touch routing wiring may overlap.

[0468] According to an embodiment of the present disclosure, it is possible to provide a display device and a display panel having a touch sensor structure enabling a narrow bezel.

[0469] According to an embodiment of the present disclosure, it is possible to provide a display device and a display panel including a touch sensor that can provide high touch sensitivity while having a narrow bezel.

[0470] According to an embodiment of the present disclosure, it is possible to provide a display device and a display panel including a touch sensor that can reduce the load deviation between sensor electrodes.

[0471] According to an embodiment of the present disclosure, it is possible to provide a display device and a display panel having a touch sensor laminate structure suitable for reducing the size of the bezel and enhancing touch sensitivity.

[0472] According to an embodiment of the present disclosure, by significantly reducing the bezel size, the use of materials corresponding to the reduced bezel size can be saved, which can contribute to the weight reduction of the display device.

[0473] The above description merely exemplarily explains the technical idea of the present disclosure. Those with ordinary knowledge in the technical field to which the present disclosure belongs can make various modifications and variations without departing from the essential characteristics of the present disclosure. In addition, the embodiments disclosed in the present disclosure are for the purpose of explanation rather than for limiting the technical idea of the present disclosure, and the scope of the technical idea of the present disclosure is not limited by such embodiments.

Description of Reference Numerals

[0474] 100: Display device 110: Display panel 111: Substrate 120: Data driving circuit 130: Gate driving circuit 140: Display controller 150: Touch sensing circuit 160: Touch driving circuit 170: Touch controller 180: Host system 200: Encapsulation layer 1000: Touch buffer film 1010: First touch interlayer insulating film 1020: Second touch interlayer insulating film 1030: Touch protection film 1310: Gate insulating film 1330: Interlayer insulating film 1350: Planarization film 1360: Bank 1371: First encapsulation layer 1372: Second encapsulation layer 1373: Third encapsulation layer 1340a, 1340b: Connection pattern 1351: Bending film

Claims

1. a substrate including a display area in which a plurality of sub-pixels are arranged, and a non-display area including a pad area located in a first direction from the display area; a first sensor electrode including a plurality of first sub-sensor electrodes arranged in the display area and arranged in a second direction intersecting the first direction, and at least one first bridge electrically connecting the plurality of first sub-sensor electrodes; A first pad disposed in the pad area; and a first touch routing wiring electrically connecting at least one of the first sub-sensor electrodes and the first pad; the plurality of first sub-sensor electrodes are disposed in a first metal layer; the first bridge is disposed in a second metal layer different from the first metal layer; A display device, wherein the first touch routing wiring extends in the first direction in the display area, electrically connects to the first pad, and includes a metal arranged in a third metal layer different from the first metal layer and the second metal layer.

2. The first touch routing wiring is a single wiring type or a multiple wiring type; When the first touch routing line is the single wire type, the first touch routing line includes a metal disposed in the third metal layer; 2. The display device of claim 1, wherein when the first touch routing wiring is the multiple wiring type, the first touch routing wiring includes a first lower sub-wiring disposed in the third metal layer and a first upper sub-wiring disposed in the first metal layer, and the first lower sub-wiring and the first upper sub-wiring are electrically connected to each other.

3. a second sensor electrode including a plurality of second sub-sensor electrodes arranged in the display area and arranged in the second direction and at least one second bridge electrically connecting the plurality of second sub-sensor electrodes; A second pad disposed in the pad area; and a second touch routing wiring electrically connecting at least one of the second sub-sensor electrodes and the second pad; the second sensor electrode is disposed closer to the pad area than the first sensor electrode; the plurality of second sub-sensor electrodes are disposed in the first metal layer; the second bridge is disposed in the second metal layer; the second touch routing wiring is disposed across the display area in the first direction, electrically connects to the second pad, and includes a metal disposed in the third metal layer; The display device of claim 1 , wherein the first touch routing line overlaps at least one of the second sub-sensor electrodes.

4. a third sensor electrode disposed in the first direction and passing between two adjacent first sub-sensor electrodes among the plurality of first sub-sensor electrodes; A third pad disposed in the pad area; and a third touch routing wiring electrically connecting the third sensor electrode and the third pad; The display device of claim 1 , wherein the third sensor electrode overlaps the first bridge.

5. the third touch routing wiring is a single wiring type or a multiple wiring type; When the third touch routing line is the single wiring type, the third touch routing line includes a metal disposed in the second metal layer; 5. The display device of claim 4, wherein when the third touch routing wiring is the multiple wiring type, the third touch routing wiring includes a third lower sub-wiring disposed in the second metal layer and a third upper sub-wiring disposed in the first metal layer, and the third lower sub-wiring and the third upper sub-wiring are electrically connected to each other.

6. The display device of claim 4 , wherein the third sensor electrode overlaps the first touch routing trace.

7. The non-display area is a first non-display area positioned in the first direction from the display area; a second non-display area located in the second direction from the display area; a third non-display area located in a direction opposite to the first direction from the display area; a fourth non-display area located in a direction opposite to the second direction from the display area; the pad area is included in the first non-display area, The display device of claim 1 , wherein the first touch routing wiring extends across the display area to the first non-display area without detouring the second non-display area and the fourth non-display area.

8. the first non-display area includes a bent area between the display area and the pad area, The bending region is a bending film on the substrate; and a connection pattern located between the substrate and the bending film, electrically connecting the first touch routing wiring and the first pad; the first pad is disposed on at least one of the first metal layer, the second metal layer, and the third metal layer; The display device according to claim 7 , wherein the connection pattern is disposed on a fourth metal layer which is different from the first metal layer, the second metal layer, and the third metal layer.

9. Each of the plurality of sub-pixels includes a transistor including a source electrode, a drain electrode, and a gate electrode; 9. The display device according to claim 8, wherein the fourth metal layer includes at least one of a gate metal layer in which the gate electrode is disposed and a source-drain metal layer in which the source electrode and the drain electrode are disposed.

10. Light emitting element, a sealing layer on the light-emitting element; A first touch interlayer insulating film on the encapsulation layer; a second touch interlayer insulating film on the first touch interlayer insulating film; and a touch protection film on the second touch interlayer insulating film, the third metal layer is disposed between the sealing layer and the first touch interlayer insulating film; the second metal layer is disposed between the first touch interlayer insulating film and the second touch interlayer insulating film; The display device according to claim 1 , wherein the first metal layer is disposed between the second touch interlayer insulating film and the touch protection film.

11. The display device of claim 10 , further comprising a touch buffer layer between the encapsulation layer and the first touch interlayer insulating layer.

12. The display device of claim 10 , wherein the second touch interlayer insulating film comprises an organic film.

13. The display device of claim 10 , wherein the first touch interlayer insulating film comprises an inorganic film.

14. The display device of claim 10 , wherein the first touch interlayer insulating film comprises an organic film.

15. a substrate including a display area in which a plurality of sub-pixels are arranged, and a non-display area including a pad area located in a first direction from the display area; a first touch interlayer insulating film on the substrate; a second touch interlayer insulating film on the first touch interlayer insulating film; a touch protection film on the second touch interlayer insulating film; a first metal layer between the second touch interlayer insulating film and the touch protection film; a second metal layer between the first touch interlayer insulating film and the second touch interlayer insulating film; a third metal layer on the substrate and the first touch interlayer insulating film; a first sensor electrode including a plurality of first sub-sensor electrodes disposed in the first metal layer and a first bridge disposed in the second metal layer and electrically connecting the plurality of first sub-sensor electrodes; and a first touch routing trace electrically connecting with the first sensor electrode, the first touch routing trace including metal disposed in the third metal layer, the first touch routing trace extending in the first direction within the display area;

16. a second sensor electrode including a plurality of second sub-sensor electrodes disposed in the first metal layer, and a second bridge disposed in the second metal layer and electrically connecting the plurality of second sub-sensor electrodes; and a second touch routing wiring electrically connected to the second sensor electrode, the second touch routing wiring including a metal disposed in the third metal layer, and extending in the first direction in the display area; The display panel of claim 15 , wherein the first touch routing trace overlaps the plurality of second sub-sensor electrodes.

17. a third sensor electrode disposed within the first metal layer; a third touch routing wiring electrically connected to the third sensor electrode and including a metal disposed in the second metal layer different from the third metal layer; a fourth sensor electrode including a plurality of fourth sub-sensor electrodes disposed in the first metal layer and a second bridge disposed in the second metal layer and electrically connecting the plurality of fourth sub-sensor electrodes; and 16. The display panel of claim 15, further comprising a fourth touch routing wiring electrically connected to the fourth sensor electrode, including metal disposed in the third metal layer, and extending in the first direction within the display area.

18. a first contact hole through which the first sensor electrode and the first touch routing wiring are connected, and a second contact hole through which the fourth sensor electrode and the fourth touch routing wiring are connected, The display panel of claim 17 , wherein the first contact hole and the second contact hole are both located on one side of the third sensor electrode, and the first touch interlayer insulating film includes an inorganic film.

19. a first contact hole through which the first sensor electrode and the first touch routing line are connected, and a second contact hole through which the fourth sensor electrode and the fourth touch routing line are connected, 20. The display panel of claim 17, wherein the first contact hole is located on one side of the third sensor electrode, the second contact hole is located on the other side of the third sensor electrode, and the first touch interlayer insulating film includes an organic film.

20. The display panel of claim 19 , wherein the third touch routing trace overlaps the fourth touch routing trace.

Images