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] The embodiments of the present disclosure relate to a display device and a display panel. [Background technology]

[0002] As the information society develops, the demand for display devices for displaying images is increasing in various forms, and various display devices such as liquid crystal display devices, organic light emitting display devices, etc. Some of these display devices are capable of providing a touch-based input method that enables a user to easily and intuitively input information or commands, breaking away from conventional input methods such as buttons, keyboards, and mice.

[0003] In recent years, a great deal of research and development has been carried out to reduce the size of the bezel (non-display area) for various reasons such as design and product use, etc. However, there is a considerable limit to how much the bezel can be reduced due to the unavoidable arrangement of various configurations (e.g., various wirings and patterns) in the bezel. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE DISCLOSURE Embodiments of the present disclosure can provide a display device and a display panel having a touch sensor structure that allows for a narrow bezel.

[0005] Advantageous Effects of Invention The 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] The embodiments of the present disclosure can provide a display device and a display panel including a touch sensor capable of reducing noise between sensor electrodes.

[0007] SUMMARY OF THE DISCLOSURE Embodiments of the present disclosure can provide a display device and a display panel having a touch sensor stackup suitable for reducing bezel size and increasing touch sensitivity. [Means for solving the problem]

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

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

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

[0011] The first touch routing trace may be a single trace type or a multiple trace type.

[0012] For example, if the first touch routing line is a single wire type, the first touch routing line may include a metal disposed in a third metal layer.

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

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

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

[0016] The plurality of second sub-sensor electrodes may be disposed in the first metal layer. A second bridge may be disposed in the second metal layer.

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

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

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

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

[0021] The third touch routing line may include a metal disposed in a different metal layer from the first touch routing line, for example, the third touch routing line may include a metal disposed in the second metal layer.

[0022] The third touch routing line may be a single line type or a multiple line type.

[0023] For example, if the third touch routing line is a single wire type, the third touch routing line may include a metal disposed in the second metal layer.

[0024] For example, when the third touch routing wiring is 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, where the third lower sub-wiring and the third upper sub-wiring may be electrically connected to each other.

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

[0026] A display panel according to an embodiment of the present disclosure may include a substrate including a display region in which a plurality of subpixels are arranged and a non-display region including a pad region located in a first direction from the display region, 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 arranged in the first metal layer and a first bridge arranged in the second metal layer and electrically connecting the plurality of first sub-sensor electrodes, and a first touch routing wiring electrically connected to the first sensor electrode and including a metal arranged in the third metal layer.

[0027] A 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 arranged in a first metal layer and a second bridge arranged 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, including a metal arranged in a third metal layer, and extending in a first direction within the display area.

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

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

[0030] The first sensor electrode, the second sensor electrode and the fourth sensor electrode may intersect with 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] A display panel according to an embodiment of the present disclosure may further include a first contact hole connecting the first sensor electrode and the first touch routing line and a second contact hole connecting the fourth sensor electrode and the fourth touch routing line.

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

[0035] In this case, the third touch routing line and the fourth touch routing line do not need to overlap.

[0036] 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.

[0037] In this case, the third touch routing line and the fourth touch routing line may overlap. Effect of the Invention

[0038] According to an embodiment of the present disclosure, a display device and a display panel having a touch sensor structure that enables a narrow bezel can be provided.

[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 an embodiment of the present disclosure, it is possible to provide a display device and a display panel including a touch sensor capable of reducing 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 stack structure suitable for reducing a bezel size and increasing touch sensitivity.

[0042] According to embodiments of the present disclosure, the bezel size can be significantly reduced, thereby saving material usage to accommodate the reduced bezel size, which can help reduce the weight of the display device. [Brief description of the drawings]

[0043] [Figure 1] FIG. 1 is a system configuration diagram of a display device according to an embodiment of the present disclosure. [Figure 2A] 1 shows a display panel according to an embodiment of the present disclosure. [Figure 2B] 1 illustrates a substrate of a display panel according to an embodiment of the present disclosure. [Diagram 3] FIG. 2 is a plan view illustrating a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 4] FIG. 2 is a plan view illustrating a touch sensor included in a display panel according to an embodiment of the present disclosure. [Diagram 5] FIG. 2 is a plan view illustrating a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a plan view illustrating a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 7] FIG. 2 is a plan view illustrating a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 8] 1 illustrates an exemplary detailed view of a portion of a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 9] 1 illustrates a unit sensor in a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 10] 1 illustrates a stacked structure of a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 11] 1 illustrates a stacked structure of a touch sensor included in a display panel according to an embodiment of the present disclosure. [Figure 12] FIG. 2 is a plan view of a display panel according to an embodiment of the present disclosure. [Figure 13] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 14] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 15] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 16]FIG. 2 is a plan view of a display panel according to an embodiment of the present disclosure. [Figure 17] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 18] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 19] 1 is a cross-sectional view of a main portion of a display panel according to an embodiment of the present disclosure. [Figure 20] 1 illustrates a touch drive circuit according to an embodiment of the present disclosure. [Figure 21] 1 illustrates a substrate and an encapsulation layer of a display panel according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0044] Some embodiments of the present disclosure will be described in detail below with reference to the exemplary drawings. When adding reference symbols to components in each drawing, the same symbols can be attached to the same components as much as possible even if they are displayed on different drawings. In addition, when describing the present disclosure, if it is determined that a specific description of a related publicly known configuration or function makes the gist of the present disclosure unclear, the detailed description can be omitted. When "includes," "has," "performed," and the like are used in this specification, other parts may be added unless "only" is used. When a component is expressed as a singular number, it may include a case where a plurality is included unless otherwise explicitly stated.

[0045] In addition, in describing components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. are used. These terms are used to distinguish the components from other components, and do not limit the essence, order, procedure, number, etc. of the components.

[0046] In describing the positional relationship of components, when two or more components are described as being "coupled," "coupled," or "connected," it should be understood that the two or more components may be directly "coupled," "coupled," or "connected," but that the two or more components may also be "coupled," "coupled," or "connected" through an additional "intervening" component. Here, the additional component may be included in one or more of the two or more components that are "coupled," "coupled," or "connected" to each other.

[0047] In describing a temporal sequence of components, methods of operation, methods of production, etc., when the temporal or chronological sequence is described using, for example, "after," "following," "after," or "before," this can include cases where the sequence is not consecutive, unless "immediately" or "directly" is used.

[0048] On the other hand, when referring to numerical values ​​or corresponding information (e.g., levels, etc.) for components, even if there is no explicit mention otherwise, the numerical values ​​or corresponding information can be interpreted as including an error range that may arise due to various factors (e.g., process factors, internal or external impacts, noise, etc.).

[0049] Various embodiments of the present disclosure will now 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] 1, a display device 100 according to an embodiment of the present disclosure may include a display panel 110 and a display driving circuit as components for displaying an image. The display driving circuit is a circuit for driving the display panel 110 and may include a data driving circuit 120, a gate driving circuit 130, a display controller 140, etc.

[0052] The display panel 110 may 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 may include a display area DA in which a plurality of sub-pixels SP are arranged, and a non-display area NDA located in a first direction from the display area DA.

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

[0055] The non-display area NDA may only have a size that can include a pad area, etc. That is, the non-display area NDA of the display panel 110 according to the embodiment of the present disclosure may 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 may be curved, and the non-display area NDA may be located below the display area DA. In this case, when a user looks at the display device 100 from the front, there may be little or no non-display area NDA visible to the user.

[0056] The display device 100 according to the embodiment of the present disclosure may be a liquid crystal display device or the like, or may be a self-emitting display device in which the display panel 110 emits light by itself. When the display device 100 according to the 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.

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

[0058] The structure of each of the subpixels SP may vary depending on the type of the display device 100. For example, when the display device 100 is a self-emitting display device in which the subpixels SP emit light by themselves, each subpixel 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 (also referred to as data voltages or video signals) and a plurality of gate lines GL that transmit gate signals (also referred to as scan signals).

[0060] For example, the data lines DL and the gate lines GL may cross each other. Each of the data lines DL may be arranged to extend in a first direction, and each of the gate lines GL may be arranged to extend in a second direction. Here, the first direction may be a column direction, and the second direction may be a row direction. Alternatively, the first direction may be a row direction, and the second direction may be a column direction. In the following, for convenience of explanation, it is taken as an example that each of the data lines DL is arranged in a column direction, each of the gate lines GL is arranged in a 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 data signals to the plurality of data lines DL.

[0062] The data driving circuit 120 receives digital image data DATA from the display controller 140, converts the received image data DATA into analog data signals, and outputs the analog data signals to a plurality of data lines DL.

[0063] For example, the data driving circuit 120 may be connected to the display panel 110 using a Tape Atomated Bonding (TAB) method, may be connected to a bonding pad of the display panel 110 using a Chip On Glass (COG) or Chip On Panel (COP) method, or may be implemented using a Chip On Film (COF) method and connected to the display panel 110.

[0064] The data driving circuit 120 may be connected to the periphery of the display area DA of the display panel 110, or alternatively, may be disposed within 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 gate signals to the plurality of gate lines GL.

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

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

[0068] In the display device 100 according to the embodiment of the present disclosure, the gate driving circuit 130 may be of a gate in panel (GIP) type and may be built into the display panel 110. When the gate driving circuit 130 is of the gate in panel type, the gate driving circuit 130 may 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 drive control signal DCS for data drive control to the data drive circuit 120, and can supply a gate drive control signal GCS for gate drive control to the gate drive circuit .

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

[0072] The display controller 140 may be implemented as a separate component from the data driving circuit 120, or may 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 a typical display technology, or may be a control device including a timing controller and performing other control functions, or may be a control device different from the timing controller, or may be a circuit within the control device. The display controller 140 may be realized by various circuits or electronic components such as an integrated circuit (IC), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a processor.

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

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

[0076] Meanwhile, the display device 100 according to the embodiment of the present disclosure may include a touch sensor and a touch sensing circuit 150 to provide not only an image display function but also a touch sensing function.

[0077] The touch sensing circuit 150 senses the touch sensor to detect whether or not a touch (finger touch, pen touch) has occurred with a touch object such as a finger or the pen 10, and can detect the touch position.

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

[0079] A touch sensor may include a plurality of sensor electrodes, where the touch sensor may be a touch panel or a touch screen panel (TSP).

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

[0081] If the touch sensor is an extruded type, the touch sensor and the display panel 110 can be fabricated separately and combined in an assembly process. The extruded type touch sensor can include a substrate and a number of sensor electrodes on the substrate, and the like.

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

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

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

[0085] When the touch sensing circuit 150 performs touch sensing using a 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 multiple sensor electrodes can act as both a transmitting sensor electrode and a receiving sensor electrode. The touch driving circuit 160 can drive all or a part of the multiple sensor electrodes and sense all or a part of the multiple sensor electrodes.

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

[0087] Hereinafter, the transmitting sensor electrodes are referred to as driving sensor electrodes, and the receiving sensor electrodes are referred to as sensing sensor electrodes.

[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 as a single device.

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

[0090] The display device 100 may further include a display driving circuit and / or a power supply circuit that supplies various power sources to 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 television (TV) of various sizes, but is not limited thereto, and may be displays of various types and sizes capable of displaying information and images.

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

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

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

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

[0096] The pixel driving transistors may include a first transistor T1, which 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] The at least one capacitor may include a storage capacitor Cst for maintaining a constant voltage during a frame.

[0098] To drive the sub-pixels SP, a data signal VDATA, which is an image signal, a scan signal SC, which is a gate signal, etc. may be applied to the sub-pixels SP. In addition, to drive the sub-pixels SP, a common pixel driving voltage including a first driving voltage VDD and a second driving voltage VSS may be applied to the sub-pixels SP.

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

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

[0101] For example, the common electrode CE may be electrically connected to a second driving voltage line VSSL. A second driving voltage VSS, which is a type of common pixel driving voltage, may be applied to the common electrode CE through the second driving voltage line VSSL. The pixel electrode PE may be electrically connected to a first node N1 of a first transistor T1 of each subpixel 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. In the following, 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 may be composed of an overlapping portion of a pixel electrode PE, an element intermediate layer EL, and a common electrode CE. A predetermined light-emitting area may be formed by each light-emitting element ED. For example, the light-emitting area of ​​each light-emitting element ED may include an overlapping portion of a pixel electrode PE, an element intermediate layer EL, and a common electrode CE.

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

[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 may be connected between a first driving voltage line VDDL and the light emitting element ED.

[0106] The first transistor T1 may 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 a 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. In the following, for convenience of explanation, 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 in the first transistor T1.

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

[0109] The second transistor T2 is controlled to be on or off by a scan signal SC, which is a gate signal applied via a scan line SCL, which is a type of gate line GL, and can control an 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 may be electrically connected between the first node N1 and the second node N2 of the first transistor T1. The storage capacitor Cst may include a first capacitor electrode electrically connected to or corresponding to the first node N1 of the first transistor T1, and a second capacitor electrode electrically connected to or 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 portion of the sub-pixel circuit portion SPC may overlap at least a portion of the light emitting element ED in the vertical direction, or alternatively, the sub-pixel circuit portion SPC may not overlap the light emitting element ED in the vertical direction.

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

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

[0115] Since the circuit elements (particularly, the light emitting element ED realized by an organic light emitting diode (OLED) including organic materials) in each subpixel SP are vulnerable to external moisture and oxygen, an encapsulation layer 200 for preventing external moisture and oxygen from penetrating into the circuit elements (particularly, the light emitting element ED) may be disposed in the display panel 110. The encapsulation layer 200 may be configured in various forms to prevent the light emitting element ED from coming into contact with moisture and oxygen.

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

[0117] The display panel 110 according to the embodiment of the present disclosure may 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 may 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. The extremely narrow bezel structure of the display panel 110 of the display device 100 according to an embodiment of the present disclosure will be described below.

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

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

[0121] Referring to FIG. 2B, a substrate 111 of a display panel 110 according to an embodiment of the present disclosure may include a display area DA where an image may be displayed and a non-display area NDA where no image is displayed.

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

[0123] 2B, the first non-display area NDA1 may include a pad area PA in which a plurality of pads are arranged. A 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 mounted may be electrically connected to the plurality of pads. For example, the driving circuit may include a touch driving circuit 160. The driving circuit may further include a data driving circuit 120.

[0124] 2B, the first non-display area NDA1 may further include a curved 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 curved 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 may further include a curved area BA. As another example, when the display device 100 is a medium- to large-sized display device such as a television (TV) or a monitor, the first non-display area NDA1 does not need to include the curved area BA.

[0126] 2B, the display panel 110 may further include a ground line 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] Meanwhile, the display panel 110 according to an embodiment of the present disclosure may further include a plurality of touch routing wirings for electrically connecting a plurality of sensor electrodes SE arranged in the display area DA and a plurality of pads arranged in the pad area PA.

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

[0130] Referring to FIG. 2B, the first touch routing region TRA1 may be a region in which a plurality of touch routing wirings are arranged to electrically connect a plurality of sensor electrodes SE and a plurality of pads, each of which is arranged to extend in a first direction.

[0131] Referring to FIG. 2B, the second touch routing region TRA2 may be a region in which a plurality of touch routing wirings are arranged to electrically connect a plurality of sensor electrodes SE and a plurality of pads, each of which is arranged to extend in a second direction.

[0132] 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 in which a touch routing line is arranged, so that the second non-display area NDA2 and the fourth non-display area NDA4 of the substrate 111 can be significantly reduced.

[0133] 2B, the third non-display area NDA3 of the substrate 111 does not include the pad area PA. In this case, the third non-display area NDA3 of the substrate 111 does not include a touch routing area in which the touch routing wiring is arranged.

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

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

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

[0137] 3, the display panel 110 according to the embodiment of the present disclosure may further include a plurality of pads PD arranged in the pad area PA, and a plurality of touch routing lines TL for electrically connecting the plurality of sensor electrodes SE and the plurality of pads PD. The plurality of touch routing lines TL may be regarded as a component included in the touch sensor.

[0138] 3, the sensor electrodes SE may include a plurality of transmitting sensor electrodes SE_TX and a plurality of receiving sensor electrodes SE_RX. The touch routing lines TL may include a plurality of transmitting touch routing lines TL_TX and a plurality of receiving touch routing lines TL_RX. The pads PD may include a plurality of transmitting pads PD_TX and a plurality of receiving pads PD_RX.

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

[0140] 3, the transmitting sensor electrodes SE_TX and the receiving sensor electrodes SE_RX may be arranged to cross each other. For example, each of the transmitting sensor electrodes SE_TX may be arranged to extend in a first direction. Each of the receiving 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 multiple transmitting sensor electrodes SE_TX and the multiple receiving sensor electrodes SE_RX can be modified in various ways. For example, each of the multiple transmitting sensor electrodes (SE_TX) and the multiple receiving sensor electrodes (SE_RX) may be bar-shaped. As another example, each of the multiple receiving sensor electrodes SE_RX may be composed of several sub-sensor electrodes electrically connected to each other, and each of the multiple transmitting sensor electrodes SE_TX may be composed of several sub-sensor electrodes electrically connected to each other. For example, each of the several sub-sensor electrodes may have various shapes such as a square, a diamond, or a comb shape.

[0142] Referring to FIG. 3, when the internal touch routing structure of the display panel 110 according to an embodiment of the present disclosure is applied, a plurality of transmitting touch routing lines TL_TX or a plurality of receiving touch routing lines TL_RX may extend from the display area DA to the pad area PA included in the first non-display area NDA1 across the display area DA without bypassing the second non-display area NDA2 and the fourth non-display area NDA4 located on the outer periphery in the second direction and the opposite direction.

[0143] For example, among the plurality of transmitting touch routing lines TL_TX and the plurality of receiving touch routing lines TL_RX, the plurality of receiving touch routing lines TL_RX may extend across the display area DA in the first direction to the pad area PA included in the first non-display area NDA1 without detouring the second non-display area NDA2 and the fourth non-display area NDA4 located on the outer periphery in the second direction and the opposite direction from the display area DA. When the plurality of receiving touch routing lines TL_RX cross the display area DA, the plurality of receiving touch routing lines TL_RX may be disposed avoiding the respective light emitting areas of the plurality of sub-pixels SP in the display area DA. This allows an internal trace structure to be designed without deteriorating light emitting performance.

[0144] In this case, the multiple receiving touch routing lines TL_RX can cross the multiple receiving sensor electrodes SE_RX, i.e., the multiple receiving touch routing lines TL_RX can be located in a different metal layer from the multiple receiving sensor electrodes SE_RX and overlap with the multiple receiving sensor electrodes SE_RX.

[0145] According to the above-mentioned internal touch routing structure of the display panel 110 according to the embodiment of the present disclosure, 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 an 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] This makes it possible to reduce the sizes of the second non-display area NDA2 and the fourth non-display area NDA4 among the first to fourth non-display areas NDA1 to NDA4 to the minimum.

[0148] 3, the sensor electrode SE including a plurality of transmitting sensor electrodes SE_TX and a plurality of receiving sensor electrodes SE_RX may include a sensor metal (SM in FIG. 8 and FIG. 9). A plurality of transmitting touch routing wires TL_TX or a plurality of receiving touch routing wires TL_RX may cross a plurality of transmitting sensor electrodes SE_TX or a plurality of receiving sensor electrodes SE_RX. A plurality of transmitting touch routing wires TL_TX or a plurality of receiving touch routing wires TL_RX may include a bridge metal BM different from the sensor metal included in the plurality of transmitting sensor electrodes SE_TX or the plurality of receiving sensor electrodes SE_RX.

[0149] 3, among the plurality of transmitting touch routing wires TL_TX and the plurality of receiving touch routing wires TL_RX, the plurality of receiving touch routing wires TL_RX may cross the plurality of receiving sensor electrodes SE_RX while crossing the display area DA. In this case, the plurality of transmitting touch routing wires TL_TX may include a bridge metal BM or a sensor metal, and the plurality of receiving touch routing wires TL_RX may include a jumping metal JM.

[0150] As another example, among the plurality of transmitting touch routing wires TL_TX and the plurality of receiving touch routing wires TL_RX, the plurality of transmitting touch routing wires TL_TX may cross the plurality of transmitting sensor electrodes SE_TX while crossing the display area DA. In this case, the plurality of receiving touch routing wires TL_RX may include bridge metals BM or sensor metals, and the plurality of transmitting touch routing wires TL_TX may include jumping metals JM.

[0151] Meanwhile, outside the display area DA (i.e., the first non-display area NDA1), the touch routing line TL may be changed from the sensor metal to the bridge metal BM, or from the bridge metal BM to the sensor metal. If necessary, a third metal different from the sensor metal and the bridge metal BM may be used as a part of the metal of the touch routing line TL.

[0152] Modified examples of the touch sensor of Fig. 3 will be described below with reference to Fig. 4, Fig. 5, Fig. 6, and Fig. 7. However, in describing the touch sensors of Fig. 4, Fig. 5, Fig. 6, and Fig. 7, a description of the same features as those of the touch sensor of Fig. 3 will be omitted, and different features will be mainly described.

[0153] FIG. 4 is another plan view illustrating a touch sensor included in a 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 may have a resistance equivalent design structure.

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

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

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

[0158] In this way, the two receiving touch routing lines 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. This makes it possible to reduce the number of pads in the pad area PA and reduce the number of pads (channels) of the touch drive circuit 160.

[0159] For example, when classifying a plurality of receiving sensor electrodes SE_RX into n groups, the number of receiving touch routing wirings TL_RX connected to the receiving sensor electrode SE_RX included in the first group among the n groups that is closest to the pad area PA may be one, the number of receiving touch routing wirings TL_RX connected to the receiving sensor electrode SE_RX included in the second group among the n groups that is second closest to the pad area PA may be two, the number of receiving touch routing wirings TL_RX connected to the receiving sensor electrode SE_RX included in the third group among the n groups that is closest to the pad area PA may be three, and the number of receiving touch routing wirings TL_RX connected to the receiving sensor electrode SE_RX included in the nth group that is 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 if there is a length deviation between the plurality of receiving touch routing wirings TL_RX, it is possible to reduce the resistance deviation of the signal transmission path between the plurality of receiving sensor electrodes SE_RX and the plurality of receiving pads PD_RX, thereby improving the touch sensitivity.

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

[0162] In other words, referring to Fig. 3 and Fig. 4, the first touch routing line TL1, the second touch routing line TL2, and the fourth touch routing line TL4 may be arranged to extend in the first direction from an edge region in the display area DA. Here, the edge region may be a partial region included in the display area DA, and may be a partial region located further outward than the sensor electrode SE4 located at the outermost edge of the transmitting sensor electrodes SE_TX each extending in the first direction. In the examples of Fig. 3 and Fig. 4, the edge region may include a first edge region located further outward than the sensor electrode SE3 located at the outermost edge on the left side (opposite to the second direction) of the transmitting sensor electrodes SE_TX each extending in the first direction, and a second edge region located further outward than the sensor electrode located at the outermost edge on the right side (second direction) of the transmitting sensor electrodes SE_TX each extending in the first direction.

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

[0164] Referring to FIG. 5, in a touch sensor included in a display panel 110 according to an embodiment of the present disclosure, among a plurality of contact holes CNT connecting a plurality of receiving sensor electrodes SE_RX and a plurality of receiving touch routing wirings TL_RX, some contact holes CNT may be located further outboard than the outermost transmitting touch routing wiring TL_TX among the plurality of transmitting touch routing wirings TL_TX, and other contact holes CNT may be located inboard than the outermost transmitting touch routing wiring TL_TX among the plurality of transmitting touch routing wirings TL_TX and some transmitting sensor electrodes SE_TX (e.g., the sensor electrode SE3 arranged on the outermost side).

[0165] For example, it is possible to arrange the receiving touch routing wirings TL_RX corresponding to the different receiving sensor electrodes SE_RX on either side of the transmitting sensor electrode SE_TX (eg, the third sensor electrode SE3).

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

[0167] 5, at least one of the plurality of receiving touch routing lines TL_RX (e.g., TL4) may cross a portion of the plurality of transmitting touch routing lines TL_TX, i.e., at least one of the plurality of receiving touch routing lines TL_RX (e.g., TL4) may overlap a portion of the plurality of transmitting touch routing lines TL_TX.

[0168] In the touch sensors of Figures 3, 4 and 5, each of the multiple transmitting sensor electrodes SE_TX may be arranged to extend in a first direction (e.g., a column direction), and each of the multiple receiving sensor electrodes SE_RX may be arranged to extend in a second direction (e.g., a 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 transmitting sensor electrodes SE_TX arranged to extend in a first direction, and can sense at least one of a plurality of receiving sensor electrodes SE_RX arranged to extend in a second direction.

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

[0171] Referring to FIG. 6, in a touch sensor included in a display panel 110 according to an embodiment of the present disclosure, each of the multiple transmitting sensor electrodes SE_TX may be arranged to extend in a second direction (e.g., a row direction), and each of the multiple receiving sensor electrodes SE_RX may be arranged to extend in a first direction (e.g., a 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 transmitting sensor electrodes SE_TX arranged to extend in a second direction, and can sense at least one of a plurality of receiving sensor electrodes SE_RX arranged to extend in a first direction.

[0173] In Figures 3 to 7, the multiple 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 multiple sensor electrodes SE arranged to extend in the first direction include a third sensor electrode SE3.

[0174] As an example, in Figures 3, 4, 5 and 7, the multiple receiving 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 multiple transmitting sensor electrodes SE_TX arranged to extend in the first direction include a third sensor electrode SE3.

[0175] As another example, in Figure 6, a plurality of transmitting 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 receiving sensor electrodes SE_RX arranged to extend in the first direction include a third sensor electrode SE3.

[0176] As shown in Figures 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 first touch routing wirings TL1 can be electrically connected to one end (e.g., the left part) of both ends of the first sensor electrode SE1, and one or more first touch routing wirings TL1 can be electrically connected to the other end (e.g., the right part) of both ends of the first sensor electrode SE1. In this case, since a signal is transmitted from both sides of the first sensor electrode SE1, a delay in signal transmission in the first sensor electrode SE1 itself can be reduced even when the length of the first sensor electrode SE1 in the second direction is long.

[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, and 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] Alternatively, at least one first touch routing line TL1 may be electrically connected to only one of both ends of a first sensor electrode SE1 arranged to extend in the second direction. At least one second touch routing line TL2 may be electrically connected to only one of both ends of a second sensor electrode SE2 arranged to extend in the second direction. At least one fourth touch routing line TL4 may be electrically connected to only one of both ends of a fourth sensor electrode SE4 arranged to extend in the second direction.

[0179] As shown in Figures 3, 4, 5 and 6, the two first touch routing wires TL1 connected to both ends of the first sensor electrode SE1 can be electrically connected to two first pads PD1. The two second touch routing wires TL2 connected to both ends of the second sensor electrode SE2 can be electrically connected to two second pads PD2. The two fourth touch routing wires 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 illustrating a touch sensor included in a display panel 110 according to an embodiment of the present disclosure.

[0181] 7, two first touch routing lines TL1 may be electrically connected to both ends of a first sensor electrode SE1 arranged to extend in the second direction. That is, one first touch routing line TL1 may be electrically connected to one end of the first sensor electrode SE1, and one first touch routing line TL1 may be electrically connected to the other end of the first sensor electrode SE1. In this case, if the first sensor electrode SE1 has a long length in the second direction, a delay in signal transmission in the first sensor electrode SE1 itself may be reduced.

[0182] Similarly, two second touch routing lines TL2 can be electrically connected to both ends of the second sensor electrode SE2 arranged to extend in the second direction, and two fourth touch routing lines 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 lines TL to one sensor electrode SE, it is possible to reduce the delay in signal transmission that occurs in the sensor electrode SE itself.

[0184] 7, two first touch routing lines TL1 connected to both ends of the first sensor electrode SE1 may be commonly connected to one first pad PD1. Two second touch routing lines TL2 connected to both ends of the second sensor electrode SE2 may be commonly connected to one second pad PD2. Two fourth touch routing lines TL4 connected to both ends of the fourth sensor electrode SE4 may 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. This makes it possible to reduce the number of pads and the size of the pad area PA in the display panel 110, and also to reduce the number of pads (the number of channels) of the touch drive circuit 160 connected to the pad area PA. This makes it possible to reduce the size of the touch drive circuit 160.

[0186] 3 to 7, the plurality of transmit pads PD_TX and the plurality of receive pads PD_RX arranged in the pad region PD may be arranged in groups according to type. In other words, the plurality of transmit pads PD_TX may be arranged in groups, and the plurality of receive pads PD_RX may be arranged in groups.

[0187] Alternatively, a plurality of transmitting pads PD_TX and a plurality of receiving pads PD_RX arranged in the pad region PD may be arranged in a mixed manner.

[0188] 3, 4 and 6, in the first non-display area NDA1, the plurality of transmitting touch routing lines TL_TX and the plurality of receiving touch routing lines TL_RX may not cross each other. In this case, the plurality of transmitting touch routing lines TL_TX and the plurality of receiving touch routing lines TL_RX may not overlap each other in the vertical direction. Thus, the plurality of transmitting touch routing lines TL_TX and the plurality of receiving touch routing lines TL_RX may be disposed in different metal layers or may be disposed in the same metal layer.

[0189] 5 and 7, in the first non-display area NDA1, all or some of the receiving touch routing lines TL_RX may cross all or some of the transmitting touch routing lines TL_TX. In this case, the transmitting touch routing lines TL_TX and the receiving touch routing lines TL_RX may overlap in the vertical direction. Therefore, the transmitting touch routing lines TL_TX and the receiving touch routing lines TL_RX must be disposed in different metal layers.

[0190] For example, as shown in Figures 3, 4, 5 and 7, when the plurality of transmitting sensor electrodes SE_TX are arranged to extend in a first direction and the plurality of receiving sensor electrodes SE_RX are arranged to extend in a second direction, the plurality of transmitting touch routing wirings TL_TX electrically connected to the plurality of transmitting sensor electrodes SE_TX can be arranged in a bridge metal layer, and the plurality of receiving touch routing wirings TL_RX electrically connected to the plurality of receiving sensor electrodes SE_RX can be arranged in a jumping metal layer. That is, the plurality of transmitting touch routing wirings TL_TX electrically connected to the plurality of transmitting sensor electrodes SE_TX can include bridge metals BM, and the plurality of receiving touch routing wirings TL_RX electrically connected to the plurality of receiving sensor electrodes SE_RX can include jumping metals JM.

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

[0192] 3 to 7, the non-display area NDA may 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 an opposite direction from the display area DA to the first direction, and a fourth non-display area NDA4 located in an opposite direction from the display area DA to the second direction. For example, the first direction may be a column direction (Y-axis direction), and a second direction intersecting the first direction may be a row direction (X-axis direction).

[0193] 3 to 7, the multiple sensor electrodes SE may include a first sensor electrode SE1 arranged in the display area DA and extending in a second direction, and a second sensor electrode SE2 arranged in the display area DA and extending in the second direction.

[0194] 3 to 7, the pads PD may include a first pad PD1 arranged in a pad area PA and a second pad PD2 arranged in the pad area PA.

[0195] Referring to Figures 3 to 7, the multiple touch routing lines TL may include a first touch routing line TL1 electrically connecting the first sensor electrode SE1 and the first pad PD1 and a second touch routing line TL2 electrically connecting the second sensor electrode SE2 and the second pad PD2.

[0196] 3 to 7, the second sensor electrode SE2 may be located closer to the pad area 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 may overlap the second sensor electrode SE2.

[0197] 3 to 7, the first touch routing line TL1 and the second touch routing line TL2 may extend across the display area DA in a first direction to the pad area PA.

[0198] 3 to 7, the plurality of sensor electrodes SE may be arranged in the display area DA and may further include a third sensor electrode SE3 extending in a first direction and a fourth sensor electrode SE4 arranged in the display area DA and extending in a second direction, the plurality of pads PD may further include a third pad PD3 arranged in the pad area PA and a fourth pad PD4 arranged in the pad area PA, and the plurality of touch routing lines TL may further include a third touch routing line TL3 electrically connecting the third sensor electrode SE3 and the third pad PD3 and a fourth touch routing line TL4 electrically connecting the fourth sensor electrode SE4 and the fourth pad PD4.

[0199] The fourth sensor electrode SE4 may be disposed parallel to the first sensor electrode SE1 and the second sensor electrode SE2.

[0200] The fourth sensor electrode SE4 may be located closer to the pad area PA than the first sensor electrode SE1 and the second sensor electrode SE2.

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

[0202] Referring to Figures 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 a transmitting sensor electrode SE_TX, and the first sensor electrode SE1, the second sensor electrode SE2 and the fourth sensor electrode SE4 may be a receiving sensor electrode SE_RX.

[0203] This allows a signal (touch drive signal) whose voltage level fluctuates to 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 a receiving sensor electrode SE_RX, and the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4 may be a transmitting sensor electrode 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 greater 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 may be 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] 3 to 7, the third sensor electrode SE3 may intersect with the first sensor electrode SE1, the second sensor electrode SE2, and the fourth sensor electrode SE4.

[0208] Referring to Figures 3, 4, 6 and 7, the first touch routing line TL1, the second touch routing line TL2 and the fourth touch routing line TL4 may be arranged on the outer periphery of the third sensor electrode SE3, which is arranged at the outermost edge among the sensor electrodes SE arranged extending in the first direction.

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

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

[0211] 3 to 7, the plurality of transmit pads PD_TX and the plurality of receive pads PD_RX arranged in the pad region PD may be arranged in groups according to type, i.e., the plurality of transmit pads PD_TX may be arranged in groups, and the plurality of receive pads PD_RX may be arranged in groups.

[0212] Alternatively, a plurality of transmitting pads PD_TX and a plurality of receiving 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 transmitting pads PD_TX and the plurality of receiving pads PD_RX arranged in the pad region PD are arranged together according to type, the fourth pad PD4, which is the receiving pad PD_RX, may be arranged between the first pad PD1, which is the receiving pad PD_RX, and the third pad PD3, which is the transmitting pad PD_TX.

[0214] In this case, the fourth touch routing line TL4 may cross the third touch routing line TL3. Therefore, the fourth touch routing line TL4 must be disposed in a different metal layer from the third touch routing line TL3. For example, the fourth touch routing line TL4 may include a jumping metal, and the third touch routing line TL3 may include a bridge metal.

[0215] When multiple transmitting pads PD_TX and multiple receiving pads PD_RX are arranged in a mixed manner in the pad area PD, unlike Figure 5, the third pad PD3, which is a transmitting pad PD_TX, can be arranged between the first pad PD1, which is a receiving pad PD_RX, and the fourth pad PD4, which is a receiving pad PD_RX.

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

[0217] For ease of explanation, the following will be described by taking as an example a case where the multiple sensor electrodes SE arranged to extend in the first direction are transmitting sensor electrodes SE_TX, and the multiple sensor electrodes SE arranged to extend in the second direction are receiving sensor electrodes SE_RX. However, the following description can be similarly applied to a case where the multiple sensor electrodes SE arranged to extend in the first direction are receiving sensor electrodes SE_RX, and the multiple sensor electrodes SE arranged to extend in the second direction are transmitting sensor electrodes SE_TX.

[0218] Fig. 8 is a detailed view of a portion 300 of a touch sensor included in a display panel 110 according to an embodiment of the present disclosure. Fig. 8 is an enlarged view of a portion 300 of the touch sensor of Fig. 3. In the following description, Figs. 3 to 7 will also be referred to.

[0219] As described above, the substrate 111 of the display panel 110 according to an embodiment of the present disclosure may 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 a first direction from the display area DA.

[0220] 8, a first receiving sensor electrode SE_RX1 and a second receiving sensor electrode SE_RX2 extending in a second direction (e.g., a row direction) may be arranged in a portion 300 of the touch sensor in Fig. 3, and a first transmitting sensor electrode SE_TX1, a second transmitting sensor electrode SE_TX2, and a third transmitting sensor electrode SE_TX3 extending in a first direction (e.g., a column direction) may be arranged. Here, the first direction and the second direction may intersect with each other.

[0221] Referring to FIG. 8, 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 may be further arranged in a portion 300 of the touch sensor of FIG. 3.

[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 the first transmitting touch routing wiring TL_TX1, the second transmitting touch routing wiring TL_TX2, and the third transmitting touch routing wiring TL_TX3, respectively, in the first non-display area NDA1 or in its vicinity.

[0223] In the following, the first receiving sensor electrode SE_RX1 is the first sensor electrode SE1, the second receiving sensor electrode SE_RX2 is the second sensor electrode SE2, and the first transmitting sensor electrode SE_TX1 is the third sensor electrode SE3. The first receiving touch routing wiring TL_RX1 is the first touch routing wiring TL1, the second receiving touch routing wiring TL_RX2 is the second touch routing wiring TL2, and the first transmitting touch routing wiring TL_TX1 is the third touch routing wiring TL3. 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 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 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 the third pad PD3.

[0224] The first sensor electrode SE1 is arranged 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 electrically connecting the plurality of first sub-sensor electrodes.

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

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

[0227] In addition, the third sensor electrode SE3 is arranged in the display area DA and arranged in the first direction, but can be arranged between two adjacent second sub-sensor electrodes (e.g., SUB2a and SUB2b) among the multiple second sub-sensor electrodes SUB2a, SUB2b, SUB2c, and 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 (e.g., SUB1a and SUB1b) included in the first sensor electrode SE1 and between two second sub-sensor electrodes (e.g., SUB2a and SUB2b) included in the second sensor electrode SE2.

[0229] The third sensor electrode SE3 may overlap the first bridge BRG1 and the second bridge BRG2 while crossing them. 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 (e.g., SUB1a) of the multiple first sub-sensor electrodes SUB1a, SUB1b, SUB1c, and SUB1d included in the first sensor electrode SE1 to the first pad PD1 arranged in the pad area PA.

[0231] That is, a portion of the first touch routing wiring TL1 can be electrically connected to at least one (e.g., SUB1a) of the multiple first sub-sensor electrodes SUB1a, SUB1b, SUB1c, and SUB1d included in the first sensor electrode SE1 via a contact hole CNT, and another portion 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 multiple second sub-sensor electrodes SUB2a, SUB2b, SUB2c, and SUB2d included in the second sensor electrode SE2 to a second pad PD2 arranged in the pad area PA.

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

[0234] The third touch routing line TL3 can electrically connect the third sensor electrode SE3 and the third pad PD3 arranged in the pad area PA.

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

[0236] The third sensor electrode SE3 may be disposed to intersect with 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 line TL1 can overlap at least one (e.g., SUB2a) of the multiple second sub-sensor electrodes SUB2a, SUB2b, SUB2c, and SUB2d included in the second sensor electrode SE2.

[0238] 8, the two first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1 may be interposed in a first space defined by a narrowed portion of the third sensor electrode SE3. The two second sub-sensor electrodes SUB2a and SUB2b included in the second sensor electrode SE2 may be interposed in a second space defined by a narrowed portion of the third sensor electrode SE3. This significantly increases the effective area of ​​the touch sensor, thereby improving touch sensitivity.

[0239] Due to such a shape of the touch sensor and the internal touch routing structure, the third sensor electrode SE3 may overlap the first touch routing line TL1 and the second touch routing line TL2.

[0240] 8, a plurality of first sub-sensor electrodes SUB1a, SUB1b, SUB1c, and SUB1d included in the first sensor electrode SE1 may be disposed in a first metal layer SML. The first bridge BRG1 may be disposed in a second metal layer BML different from the first metal layer SML. The first touch routing line TL1 may be disposed across the display area DA in the first direction, extend to the pad area PA, and be disposed in a third metal layer JML different from the first metal layer SML and the second metal layer BML.

[0241] 8, a plurality of second sub-sensor electrodes SUB2a, SUB2b, SUB2c, and SUB2d included in the second sensor electrode SE2 may be disposed in a first metal layer SML. The second bridge BRG2 may be disposed in a second metal layer BML different from the first metal layer SML. The second touch routing line TL2 may be disposed across the display area DA in the first direction, extend to the pad area PA, and be disposed in a 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 may be disposed in the first metal layer SML.

[0243] Referring to FIG. 8, the third touch routing line TL3 may be disposed in a metal layer different from that of the first touch routing line TL1 and the second touch routing line TL2.

[0244] For example, the first touch routing line TL1 and the second touch routing line TL2 may be disposed in the third metal layer JML, and the third touch routing line TL3 may be disposed in the second metal layer BML.

[0245] In the following, for convenience of explanation, the first metal layer SML is referred to as a sensor metal layer SML, the second metal layer BML is referred to as a bridge metal layer BML, and the third metal layer JML is referred to as a jumping metal layer JML.

[0246] 9 illustrates a unit sensor 800 in a touch sensor included in a display panel 110 according to an embodiment of the present disclosure. Here, the unit sensor 800 may refer to an area where one transmitting sensor electrode SE_TX and one receiving sensor electrode SE_RX intersect.

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

[0248] The third sensor electrode SE3 is also disposed in the sensor metal layer SML, and may be composed of a mesh-shaped sensor metal SM having openings OA.

[0249] Here, each of the openings OA formed in the first sensor electrode SE1 and the third sensor electrode SE3 may correspond to a light emitting region of at least one sub-pixel SP, i.e., light emitted from the light emitting element ED of at least one sub-pixel SP may 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 may be interposed in a first space defined by a narrowed portion of the third sensor electrode SE3.

[0251] 9, the first bridge BRG1 included in the first sensor electrode SE1 may be disposed in a bridge metal layer BML. The first bridge BRG1 included in the first sensor electrode SE1 may be disposed by bending or sagging along the shape of the sensor metal SM constituting the two first sub-sensor electrodes SUB1a and SUB1b included in the first sensor electrode SE1.

[0252] Referring to FIG. 9, a first bridge BRG1 included in a first sensor electrode SE1 may cross a third sensor electrode SE3.

[0253] Referring to FIG. 9, the first bridge BRG1 included in the first sensor electrode SE1 may be arranged by bending or sagging along the shape of the mesh-like sensor metal SM constituting 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 may vertically overlap the mesh-shaped sensor metal SM constituting 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 may be disposed to avoid at least one of the openings OA of the first sensor electrode SE1 and the third sensor electrode SE3.

[0256] This makes it possible to prevent the light emitting region of the sub-pixel SP from being reduced by the first bridge BRG1, and therefore makes it possible to widen the light emitting region 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 arranged in the jumping metal layer JML, but can be arranged to be bent or curved according to the shape of the sensor metal SM that constitutes the first sensor electrode SE1.

[0258] The first touch routing wiring TL1 electrically connected to the first sensor electrode SE1 can vertically overlap with the mesh-shaped sensor metals SM constituting each of 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 arranged to avoid at least one of the openings OA of the first sensor electrode SE1 and the third sensor electrode SE3.

[0260] This makes it possible to prevent the light emitting area of ​​the sub-pixel SP from being reduced by the first touch routing line TL1, and therefore makes it possible to widen the light emitting area of ​​the sub-pixel SP and improve the light emitting efficiency.

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

[0262] 10 and 11, when the display panel 110 is a self-emitting display panel, the display panel 110 may include an encapsulation layer 200 on the light-emitting element ED.

[0263] 10 and 11, to form a touch sensor, the display panel 110 may further include a first touch interlayer insulating film 1010 on the encapsulation 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] 10 and 11 , a jumping metal layer JML may be disposed between the encapsulation layer 200 and a first touch interlayer insulating film 1010. A bridge metal layer BML may be disposed between the first touch interlayer insulating film 1010 and a second touch interlayer insulating film 1020. A sensor metal layer SML may be disposed between the second touch interlayer insulating film 1020 and a touch protection film 1030.

[0265] 10 and 11, in order to form a touch sensor, the display panel 110 may further include a touch buffer film 1000 between the encapsulation layer 200 and a first touch interlayer insulating film 1010. In this case, a jumping metal layer JML may be disposed between the touch buffer film 1000 and the first touch interlayer insulating film 1010.

[0266] In an embodiment of the present disclosure, saying that a metal includes a jumping metal JM may be the same as saying that a metal is arranged in a jumping metal layer JML, saying that a metal includes a bridge metal BM may be the same as saying that a metal is arranged in a bridge metal layer BML, and saying that a metal includes a sensor metal SM may be the same as saying that a metal is arranged in a sensor metal layer SML.

[0267] 10 and 11, the second touch interlayer insulating film 1020 may include an inorganic film. Alternatively, the second touch interlayer insulating film 1020 may include an organic film.

[0268] 10 and 11, when the second touch interlayer insulating film 1020 includes an organic film, it is possible to reduce 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. For example, it is possible to reduce 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.

[0269] 10 and 11, the first touch interlayer insulating layer 1010 may include an inorganic layer, or may include an organic layer.

[0270] 10 and 11, when the first touch interlayer insulating film 1010 includes an organic film, it is possible to reduce 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. For example, when the first touch interlayer insulating film 1010 includes an organic film, it is possible to reduce 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.

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

[0272] 10, a third sensor electrode SE3 may 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 may be disposed together in the sensor metal layer SML.

[0273] Referring to FIG. 10, a portion of the first bridge BRG1 disposed in the bridge metal layer BML may overlap 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, and can be electrically connected to the first touch routing wiring TL1 disposed in the jumping metal layer JML through contact holes in the second touch interlayer insulating film 1020 and the first touch interlayer insulating film 1010.

[0275] Hereinafter, the vertical structure of the display panel 110 according to the aforementioned embodiment of the present disclosure will be described in further detail with reference to FIGS.

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

[0277] 12, a touch sensor according to an embodiment of the present disclosure may include m transmitting sensor electrodes SE_TX1 to SE_TXm and n receiving sensor electrodes SE_RX1 to SE_RXn, where m is a natural number equal to or greater than 2, and n is a natural number equal to or greater than 2.

[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] 12, m or more transmitting touch routing wires TL_TX1 to TL_TXm can electrically connect m transmitting sensor electrodes SE_TX1 to SE_TXm to the transmitting pads PD_TX arranged in the pad area PA.

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

[0281] 12, n or more receiving touch routing wirings TL_RX1 to TL_RXn can electrically connect n receiving sensor electrodes SE_RX1 to SE_RXn to receiving pads PD_RX arranged in the pad area PA.

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

[0283] Referring to FIG. 12, contact holes CNT connecting n or more receiving touch routing wirings TL_RX1 to TL_RXn and n receiving sensor electrodes SE_RX1 to SE_RXn can be arranged further outboard than the first transmitting sensor electrode SE_TX1, which is arranged on the outermost edge among the m transmitting sensor electrodes SE_TX1 to SE_TXm.

[0284] This allows the n or more receiving touch routing wirings TL_RX1 to TL_RXn to be arranged extending to the pad area PA without passing through the first touch routing area TRA1 in the first non-display area NDA1. That is, the n or more receiving touch routing wirings TL_RX1 to TL_RXn do not need to overlap with the m or more transmitting touch routing wirings TL_TX1 to TL_TXm arranged in the first touch routing area TRA1.

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

[0286] Figures 13 to 15 are cross-sectional views of main parts of the display panel 110 in Figure 12. When describing with reference to Figures 13 to 15, Figures 2A and 3 will also be referred to.

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

[0288] 13 and 14, the substrate 111 includes a display area DA and a first non-display area NDA1 which is an outer area of ​​the display area DA in a first direction, and the first non-display area NDA1 may include a bending area BA and a pad area PA.

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

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

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

[0293] 13 to 15, a light emitting device ED including a pixel electrode PE, an element intermediate layer EL, and a common electrode CE may be formed on a planarization layer 1350. As shown in FIG.

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

[0295] A bank 1360 may be disposed on the pixel electrode PE. The bank 1360 may have an opening in a region where a 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 a part of the upper surface of the pixel electrode PE through an opening of the bank 1360. A common electrode CE can be disposed on the element intermediate layer EL.

[0297] 13 to 15, a sealing layer 200 may be disposed on the common electrode CE. The sealing layer 200 may be a single layer or a multi-layer.

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

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

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

[0301] The second encapsulating layer 1372 may be disposed on the first encapsulating layer 1371. The second encapsulating layer 1372 may be formed to a sufficient thickness to prevent particles from penetrating the first encapsulating layer 1371 and being introduced into the device intermediate layer EL and the common electrode CE including an organic material. The second encapsulating layer 1372 may be formed by being applied in a liquid form through an inkjet process and then through a curing process.

[0302] The third sealing layer 1373 may be disposed on the second sealing layer 1372. The third sealing layer 1373 may be disposed so as to cover the second sealing layer 1372. The third sealing layer 1373 may cover the second sealing layer 1372 and extend to the first non-display area NDA1 to cover at least one dam D1, D2. The third sealing layer 1373 may also extend to the pad area PA disposed outside the at least one dam D1, D2 to overlap with the pad PD3. At this time, the first sealing layer 1371 and the third sealing layer 1373 may be formed so that the positions of the ends are the same.

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

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

[0305] 13 to 15, a touch sensor may be formed on the encapsulation layer 200. The touch sensor formation layer on the encapsulation layer 200 may 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] To form a touch sensor, a touch buffer film 1000 can be disposed on the sealing layer 200 as shown in FIGS. 10 and 11, or the touch buffer film 1000 can be omitted on the sealing layer 200 as shown in FIGS. 13 to 15.

[0307] The metal layer immediately above the encapsulation layer 200 or the touch buffer film 1000 may be a jumping metal layer JML. The insulating layer immediately above the jumping metal layer JML may be a first touch interlayer insulating film 1010. The metal layer immediately above the first touch interlayer insulating film 1010 may be a bridge metal layer BML. The insulating layer immediately above the bridge metal layer BML may be a second touch interlayer insulating film 1020. The metal layer immediately above the second touch interlayer insulating film 1020 may be a 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 area PA without passing through the first touch routing area TRA1 in the first non-display area NDA1, so that the n or more receiving touch routing wirings TL_RX1 to TL_RXn do not overlap with the m or more transmitting touch routing wirings TL_TX1 to TL_TXm arranged in the first touch routing area TRA1.

[0309] The first touch interlayer insulating film 1010 may be made of an inorganic film having a thickness thinner than that of the organic film. Of course, the first touch interlayer insulating film 1010 may be made 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 are composed of an inorganic film, the inorganic film can be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide.

[0312] First, with reference to FIG. 13, a vertical cross-sectional structure of a region in which a part of the third sensor electrode SE3 and the third touch routing line TL3 are arranged will be considered.

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

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

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

[0316] 13, the touch protection film 1030 may be disposed on the sensor electrode SE including the third sensor electrode SE3 and the fourth sensor electrode SE4. The touch protection film 1030 may protect the touch sensor by blocking harmful external environments and maintain stable characteristics of the display device 100. For example, the touch protection film 1030 may be an organic film. The touch protection film 1030 may be disposed to extend to the non-display area NDA.

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

[0318] According to the example of FIG. 13, the third sensor electrode SE3 may be the first transmitting sensor electrode SE_TX1, the third touch routing line TL3 may be the first transmitting touch routing line TL_TX1, and the fourth sensor electrode SE4 may be the nth receiving sensor electrode SE_RXn.

[0319] 13, in the first non-display area NDA1, the third touch routing line TL3 may be disposed along the first inclined surface SLP1 of the encapsulation layer 200.

[0320] 13, the third touch routing line TL3 may be electrically connected to the third pad PD3 disposed in the pad area PA through a connection pattern 1340a disposed on the outer periphery of the encapsulation layer 200. Here, the connection pattern 1340a may be disposed on the outer periphery of the encapsulation layer 200 and on the interlayer insulating film 1330.

[0321] The third touch routing line TL3 may be a single-line type or a multiple-line type.

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

[0323] 13, when the third touch routing wiring TL3 is a multiple wiring type, the third touch routing wiring TL3 may include a third lower sub-wiring TL3a and a third upper sub-wiring TL3b electrically connected to each other. The third lower sub-wiring TL3a may be disposed in a bridge metal layer BML, which is a second metal layer, and the third upper sub-wiring TL3b may be disposed in a sensor metal layer SML, which is a first metal layer.

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

[0325] 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 are separated from each other, but may be electrically connected to each other via a contact hole in the second touch interlayer insulating film 1020. This can reduce the resistance of the third touch routing wiring TL3.

[0326] Referring to FIG. 13, at least one of the third lower sub-wiring TL3a and the third upper sub-wiring TL3b is arranged on the outer periphery of the encapsulation 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, a connection pattern 1340a may be disposed across a bending area BA and a pad area PA.

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

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

[0330] At least one dam D1, D2 may be placed.

[0331] The first dam D1 may be disposed near an outer periphery of the second encapsulating layer 1372 included in the encapsulating layer 200. The first dam D1 is disposed to surround the outer periphery of the display area DA and may temporarily block the flow of the second encapsulating layer 1372. In addition, the first dam D1 is disposed between the display area DA and the pad area PA and may temporarily block the flow of the second encapsulating layer 1372 to prevent the second encapsulating layer 1372 from entering the pad area PA.

[0332] The second dam D2 may be disposed to surround the outer periphery of the first dam D1 and may be disposed next to the first dam D1 at a distance from each other. The second dam D2 may secondarily block the second encapsulation layer 1372 overflowing onto the outer periphery of the first dam D1. Thus, the first dam D1 and the second dam D2 may more effectively block the second encapsulation layer 1372 from being exposed to the outside of the display device 100 or from invading the pad area PA.

[0333] The at least one dam D1, D2 may be formed simultaneously with the planarization film 1350 or the bank 1360 and may be made of the same material as the planarization film 1350 or the bank 1360. In such a case, the at least one dam D1, D2 may be made 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 extending from the sealing layer 200 to the top of at least one dam D1, D2, and can be electrically connected to the connection pattern 1340a arranged below through a contact hole in the second touch interlayer insulating film 1020. Thereby, the third touch routing wiring TL3 does not need to be arranged in the bending region BA.

[0335] 13, the bending region BA may include a bending film 1351 on the substrate 111, and a connection pattern 1340a electrically connecting the third touch routing wiring TL3 extending between the encapsulation layer 200 and the bending film 1351 to 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 line TL3 may be electrically connected to a third pad PD3 in the pad area PA through a connection pattern 1340a. Here, the third pad PD3 may be directly or indirectly connected to the touch driving circuit 160.

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

[0338] The connection pattern 1340a may be disposed in a fourth metal layer different from the sensor metal layer SML, the bridge metal layer BML, and the jumping metal layer JML. Here, the transistor included in each of the subpixels SP includes a source electrode, a drain electrode, and a gate electrode, and the fourth metal layer may include 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.

[0339] For example, the connection pattern 1340a may be a single connection pattern including the same material as the source-drain electrodes 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 electrodes 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 disposed above and below the interlayer insulating film 1330, respectively, and can be electrically connected to each other via contact holes in the interlayer insulating film 1330.

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

[0341] The bending film 1351 may be disposed in the bending region BA, between the dams D1 and D2 and the pad PD4, and may be disposed so as to cover an upper portion of a part of the connection pattern 1340a. The bending film 1351 may play a role in preventing the connection pattern 1340a from being exposed to the outside in the bending region BA where the substrate 111 is bent, and thus protecting the connection pattern 1340a. The bending film 1351 may also have an open hole OH that exposes the upper portion. That is, the open hole OH may be formed by removing an inorganic film (e.g., the first sealing layer 1371, the third sealing layer 1373, and the second touch interlayer insulating film 1020) that may 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, a crack may occur in the inorganic film when the bending region BA is bent, and moisture or the like may penetrate into the inorganic film in which the crack occurs, so the inorganic film disposed on the upper portion of the bending film 1351 is removed.

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

[0343] The bending film 1351 and the pattern protection film can be disposed in the same layer as the planarization film 1350 and made 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 area PA, the third pad PD3 may be electrically connected to the connection pattern 1340a through a pad contact hole penetrating the first encapsulation layer 1371, the third encapsulation layer 1373 and the second touch interlayer insulating film 1020.

[0345] Next, a vertical cross-sectional structure of a region in which a part of the fourth sensor electrode SE4 and the fourth touch routing line TL4 are arranged will be described with reference to Fig. 14. Descriptions of structural features similar to those in Fig. 13 may be omitted.

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

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

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

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

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

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

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

[0353] 14, the fourth lower sub-interconnection TL4a may be disposed on the encapsulation layer 200 or the touch buffer layer 1000, and may be disposed under the first touch interlayer insulating layer 1010.

[0354] Referring to FIG. 14, within the display area DA, a 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 contact holes in the first touch interlayer insulating film 1010 and the second touch interlayer insulating film 1020.

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

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

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

[0358] In the first non-display area NDA1, the fourth touch routing line TL4 may be a single-line type or a multiple-line type.

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

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

[0361] The fourth lower sub-wiring TL4a can be disposed in a jumping metal layer JML which is the third metal layer, and the fourth upper sub-wiring TL4b can be disposed in a 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 constituting the fourth touch routing wiring TL4 can be electrically connected via 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 constituting the fourth touch routing wiring TL4 may be electrically connected to the fourth pad PD4 in the pad area 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 extending from the sealing layer 200 to the top of at least one dam D1, D2, and can be electrically connected to the connection pattern 1340a disposed below through a contact hole in the second touch interlayer insulating film 1020. Thus, the third touch routing wiring TL3 does not need to be disposed in the bending region BA.

[0366] 14, the bending region BA may include a bending film 1351 on the substrate 111, and a connection pattern 1340b electrically connecting a fourth touch routing line TL4 extending between the encapsulation layer 200 and the bending film 1351 to a fourth pad PD4 disposed in the pad region PA. The connection pattern 1340b may be located between the substrate 111 and the bending film 1351.

[0367] Next, the internal touch routing structure will be described with reference to FIG. 15. For this purpose, a vertical cross-sectional structure of a region in which a part of the first sensor electrode SE1 and the first touch routing line TL1 are arranged will be described. Descriptions of structural features similar to those in FIG. 13 and FIG. 14 may be omitted.

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

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

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

[0372] The first touch routing wiring TL1 can be arranged to extend through the display area DA in the first direction to the first non-display area NDA1 without bypassing 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 opposite direction from the display area DA in the second direction.

[0373] The first touch routing line 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 line TL1 may be the first receiving touch routing line TL_RX1, and the third sensor electrode SE3 may be the first transmitting sensor electrode SE_TX1.

[0375] 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 line TL1.

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

[0377] The first touch routing trace TL1 may be configured and arranged in a similar manner as the fourth touch routing trace TL4 shown in FIG.

[0378] The first touch routing line TL1 may be a single-line type or a multiple-line type.

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

[0380] For example, when the first touch routing wiring TL1 is a multiple wiring type, the first touch routing wiring TL1 may include a first lower sub-wiring and a first upper sub-wiring electrically connected to each other. The first lower sub-wiring may be disposed in a jumping metal layer JML, which is a third metal layer, and the first upper sub-wiring may be disposed in a sensor metal layer SML, which is a first metal layer.

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

[0382] 15, according to the internal touch routing structure according to the embodiment of the present disclosure, touch routing wiring is not arranged in the second non-display area NDA2 located on the outer periphery in the second direction of the display area DA (e.g., the outer periphery on the right side of the display area DA) and the fourth non-display area NDA4 located on the outer periphery in the opposite direction of the second direction of the display area DA (e.g., the outer periphery on the left side of the display area DA). This allows the size of the second non-display area NDA2, which is the right bezel area, and the fourth non-display area NDA4, which is the left bezel area, to 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 parts of the display panel 110 in FIG.

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

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

[0386] 16, unlike FIG 12, a part of the contact hole CNT connecting the n or more receiving touch routing wirings TL_RX1 to TL_RXn and the n receiving sensor electrodes SE_RX1 to SE_RXn may be located further outboard than the first transmitting sensor electrode SE_TX1 located on the outermost edge among the m transmitting sensor electrodes SE_TX1 to SE_TXm. However, another part of the contact hole CNT connecting the n or more receiving touch routing wirings TL_RX1 to TL_RXn and the n receiving sensor electrodes SE_RX1 to SE_RXn may be located further inboard than the first transmitting sensor electrode SE_TX1 located on the outermost edge among the m transmitting sensor electrodes SE_TX1 to SE_TXm.

[0387] As a result, as shown in FIG. 16, at least some of the n or more receiving touch routing lines TL_RX1 to TL_RXn can be arranged to pass through the first touch routing area TRA1 in the first non-display area NDA1 and extend to the pad area PA.

[0388] In the first non-display area NDA1, at least a portion of the n or more receiving touch routing wires TL_RX1 to TL_RXn can overlap with the m or more transmitting touch routing wires TL_TX1 to TL_TXm arranged in the first touch routing area TRA1.

[0389] In this manner, in the first non-display area NDA1, noise (eg, parasitic capacitance) may occur between the receiving touch routing line and the transmitting touch routing line that overlap each other.

[0390] In a display panel 110 according to an embodiment of the present disclosure, in order to reduce noise between overlapping receiving touch routing wiring and transmitting touch routing wiring, the first touch interlayer insulating film 1010 located between the receiving touch routing wiring (sub-wiring arranged in the jumping metal layer JML) and the transmitting touch routing wiring (sub-wiring arranged in the bridge metal layer BML) in the first non-display area NDA1 can be made of an insulating film for noise removal.

[0391] Thus, the first touch interlayer insulating film 1010 may include an organic film.

[0392] For example, the first touch interlayer dielectric 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, a third lower sub-wiring TL3a of the third touch routing wiring TL3, which is the first receiving 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 constituting the fourth touch routing wiring TL4 may overlap with the third lower sub-wiring TL3a of the third touch routing wiring TL3, which is the first transmitting touch routing wiring TL_TX1.

[0398] In other words, in the first non-display area NDA1, the fourth touch routing line TL4 which is the n-th receiving touch routing line TL_RXn and the third touch routing line TL3 which is the first transmitting touch routing line TL_TX1 can overlap with each other.

[0399] However, in the first non-display area NDA1, the first touch interlayer insulating film 101 located between the fourth touch routing line TL4, which is the nth receiving touch routing line TL_RXn, and the third touch routing line TL3, which is the first transmitting touch routing line TL_TX1, is made of a noise removal insulating film, so that noise between the fourth touch routing line TL4, which is the nth receiving touch routing line TL_RXn, and the first transmitting touch routing line TL_TX1 can be reduced.

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

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

[0402] For example, the driver 2010 may include an output buffer that includes an amplifier or the like.

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

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

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

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

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

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

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

[0410] Referring to FIG. 21, the encapsulation layer 200 includes a first sloping surface SLP1 located on the outer edge of a first direction based on the center, a second sloping surface SLP2 located on the outer edge of a second direction intersecting the first direction based on the center, a third sloping surface SLP3 located on the outer edge of a direction opposite to the first direction based on the center, and a fourth sloping surface SLP4 located on the outer edge of a direction opposite to the second direction based on the center. Referring to FIG. 21, the first sloping surface SLP1, the second sloping surface SLP2, the third sloping surface SLP3 and the fourth sloping surface SLP4 of the encapsulation layer 200 may 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 encapsulation layer 200, no metal (e.g., touch routing wiring) is arranged on the second inclined surface SLP2 and the fourth inclined surface SLP4, and a touch routing wiring TL extending in a first direction can pass on the first inclined surface SLP1.

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

[0413] The above-described embodiment of the present disclosure can be briefly described as follows.

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

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

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

[0417] The first touch routing trace may be a single trace type or a multiple trace type.

[0418] For example, if the first touch routing line is a single wire type, the first touch routing line may include a metal disposed in a third metal layer.

[0419] For example, when the first touch routing wiring is a multi-wiring type, the first touch routing wiring may include a first lower sub-wiring disposed in the third metal layer and a first upper sub-wiring disposed in the first metal layer, where the first lower sub-wiring and the first upper sub-wiring may be electrically connected to each other.

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

[0421] The second sensor electrode may be positioned closer to the pad area than the first sensor electrode.

[0422] The plurality of second sub-sensor electrodes may be disposed in the first metal layer. A second bridge may be disposed in the second metal layer.

[0423] The second touch routing trace may be disposed across the display area in the first direction, electrically connect with the second pad, and may include metal disposed in a third metal layer.

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

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

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

[0427] The third touch routing line may include a metal disposed in a different metal layer from the first touch routing line, for example, the third touch routing line may include a metal disposed in the second metal layer.

[0428] The third touch routing line may be a single-line type or a multiple-line type.

[0429] For example, if the third touch routing line is a single wire type, the third touch routing line may include a metal disposed in the second metal layer.

[0430] For example, when the third touch routing wiring is 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, where the third lower sub-wiring and the third upper sub-wiring may be electrically connected.

[0431] The third sensor electrode can overlap the first touch routing trace.

[0432] A display device according to an embodiment of the present disclosure may further include a circuit (which may include a touch drive circuit) connected to the pad area and configured to supply a signal having a varying voltage level to one of the first sensor electrode and the third sensor electrode.

[0433] In a 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 an opposite direction from the display area in the first direction, and a fourth non-display area located in an opposite direction from the display area in the second direction.

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

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

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

[0437] The ground wiring can be arranged from one location in the pad area to another location in 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 bend area between the display area and the pad area.

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

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

[0441] The connection pattern may 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 the plurality of subpixels includes a transistor including a source electrode, a drain electrode, and a gate electrode, the fourth metal layer in which the connection pattern is disposed may include 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.

[0443] A display device according to an embodiment of the present disclosure may further include a light-emitting element, an encapsulation 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.

[0444] A third metal layer can be disposed between the encapsulation layer and the first touch inter-layer insulating film.

[0445] A second metal layer can be disposed between the first touch inter-layer dielectric and the second touch inter-layer dielectric.

[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 the embodiment of the present disclosure may further include a touch buffer layer between the encapsulation layer and the first touch interlayer insulating layer.

[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 encapsulation layer included in the display device according to an embodiment of the present disclosure may include a first inclined surface located on the outer edge of a first direction based on a center, a second inclined surface located on the outer edge of a second direction intersecting the first direction based on the center, a third inclined surface located on the outer edge of a direction opposite to the first direction based on the center, and a fourth inclined surface located on the outer edge of a direction opposite to the second direction based on the center.

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

[0453] Each of the plurality of first sub-sensor electrodes is disposed in the first metal layer and can include a mesh-shaped sensor metal having openings.

[0454] The first bridge is disposed in the second metal layer, but may be disposed so as to avoid at least one of the openings.

[0455] The first touch routing trace is disposed in the third metal layer, but may be disposed such that it avoids at least one of the openings.

[0456] A display panel according to an embodiment of the present disclosure may include a substrate including a display region in which a plurality of subpixels are arranged and a non-display region including a pad region located in a first direction from the display region, 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 arranged in the first metal layer and a first bridge arranged in the second metal layer and electrically connecting the plurality of first sub-sensor electrodes, and a first touch routing wiring electrically connected to the first sensor electrode and arranged in the third metal layer.

[0457] A 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 arranged in a first metal layer and a second bridge arranged 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, including a metal arranged in a third metal layer, and extending in a first direction within the display area.

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

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

[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] A display panel according to an embodiment of the present disclosure may further include a first contact hole connecting the first sensor electrode and the first touch routing line and a second contact hole connecting the fourth sensor electrode and the fourth touch routing line.

[0464] For example, the first contact hole and the second contact hole may all 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 line and the fourth touch routing line do not need to 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 line and the fourth touch routing line may overlap.

[0468] According to an embodiment of the present disclosure, a display device and a display panel having a touch sensor structure that enables a narrow bezel can be provided.

[0469] 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.

[0470] 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 load deviation between sensor electrodes.

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

[0472] According to embodiments of the present disclosure, the bezel size can be significantly reduced, thereby conserving material usage to accommodate the reduced bezel size, which can help reduce the weight of the display device.

[0473] The above description is merely an illustrative example of the technical idea of ​​the present disclosure, and various modifications and variations are possible within the scope of the essential characteristics of the present disclosure, if one has ordinary knowledge in the technical field to which the present disclosure belongs. In addition, the examples disclosed in the present disclosure are intended to explain, rather than limit, the technical idea of ​​the present disclosure, and such examples do not limit the scope of the technical idea of ​​the present disclosure. [Explanation of symbols]

[0474] 100: Display device 110: Display panel 111: Substrate 120: Data drive circuit 130: Gate drive circuit 140: Display controller 150: Touch sensing circuit 160: Touch drive circuit 170: Touch controller 180: Host system 200: Sealing 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: Planarizing film 1360: Bank 1371: First sealing layer 1372: second sealing layer 1373: third sealing layer 1340a, 1340b: Connection pattern 1351: Bending membrane

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.

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