Display device with touch sensor

Abstract

The present disclosure relates to a display device having a touch sensor. The display device includes a substrate including a display area in which a plurality of sub-pixels are disposed and a non-display area other than the display area, an encapsulation layer for covering the plurality of sub-pixels, a first touch electrode line including a plurality of first touch sensing electrodes disposed on the encapsulation layer in a first direction and spaced apart from each other in the first direction, a second touch electrode line disposed in the same plane as the first touch electrode line and disposed in a second direction crossing the first direction, a plurality of pads disposed at one side of the substrate, a first touch routing wire configured to connect some of the first touch electrode lines and some of the plurality of pads and disposed between the plurality of first touch sensing electrodes in the second direction, and a second touch routing wire configured to connect the second touch electrode line to some other pads among the plurality of pads.

Description

Technical Field

[0001] This disclosure relates to display devices, and more particularly to display devices having a touch sensor capable of sensing touch. Background Technology

[0002] A touchscreen is an input device that allows a user to input commands by selecting instructions displayed on a screen, such as a display device, using their hand or an object. The touchscreen converts the contact point of the hand or object into an electrical signal and receives the selected instruction at that contact point as an input signal. Because touchscreens can replace separate input devices connected to a display device, such as keyboards and mice, their use is expanding. Summary of the Invention

[0003] The inventors have recognized that when touchscreens are applied to large-size or high-resolution display panels, the number of touch electrodes increases, thereby increasing the amount of wiring required to connect the touch electrodes to the touch driving circuitry. Consequently, there is a problem of increased size in the non-display area (i.e., the bezel area) where wiring is located.

[0004] This disclosure was made in view of the above-mentioned problems and other limitations associated with the prior art. One or more aspects of this disclosure provide a display device with a touch sensor that can reduce the size of the bezel area.

[0005] According to one aspect of this disclosure, a display device may include: a substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; an encapsulation layer for covering the plurality of sub-pixels; a first touch electrode line including a plurality of first touch sensing electrodes disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; a second touch electrode line disposed in the same plane as the first touch electrode line and disposed along a second direction intersecting the first direction; a plurality of pads disposed on one side of the substrate; a first touch routing wiring configured to connect some of the first touch electrode lines and some of the pads, and disposed between the plurality of first touch sensing electrodes along the second direction; and a second touch routing wiring configured to connect the second touch electrode lines to some of the other pads among the plurality of pads.

[0006] According to another aspect of this disclosure, the display device may include: a substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; a dam disposed on the substrate near the boundary between the display area and the non-display area; an encapsulation layer for covering the plurality of sub-pixels and the dam; a first touch electrode line including a plurality of first touch sensing electrodes disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; a second touch electrode line disposed in the same plane as the first touch electrode line and disposed along a second direction intersecting the first direction; a first touch routing wiring connected to the first touch electrode line in the display area and disposed between the plurality of first touch sensing electrodes along the second direction; and a second touch routing wiring connected to the second touch electrode line in the non-display area.

[0007] In addition to the features of this disclosure mentioned above, additional technical benefits and features of this disclosure will be included in the specific embodiments and drawings of this disclosure. Attached Figure Description

[0008] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate various aspects of the present disclosure and, together with the detailed embodiments, serve to explain the principles of the present disclosure.

[0009] In the attached diagram:

[0010] Figure 1 This is a system configuration diagram of a display device according to one embodiment of the present disclosure;

[0011] Figure 2 A display panel according to one embodiment of the present disclosure is illustrated schematically;

[0012] Figure 3 An exemplary embodiment of a structure for embedding a touch panel in a display panel according to one embodiment of the present disclosure is illustrated;

[0013] Figure 4 The arrangement of touch sensors in a display panel according to one embodiment of the present disclosure is illustrated schematically.

[0014] Figure 5 for Figure 4 Enlarged view of area 'A1';

[0015] Figure 6 for Figure 4 Enlarged view of area 'A2';

[0016] Figure 7 For along Figure 5 A cross-sectional view of V-V';

[0017] Figure 8 For along Figure 6 A cross-sectional view of VI-VI';

[0018] Figure 9 For along Figure 4 The cross-sectional view of IV-IV'; and

[0019] Figure 10 For along Figure 4 The cross-sectional view of B-B'. Detailed Implementation

[0020] The advantages and features of this disclosure, and its implementation methods, will be illustrated by the following description of embodiments with reference to the accompanying drawings. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0021] The shapes, dimensions, scales, angles, and quantities disclosed in the accompanying drawings to describe embodiments of the present disclosure are merely examples, and therefore, the present disclosure is not limited to the illustrated details. Throughout the specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of related known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of the present disclosure. Where terms such as “comprising,” “having,” and “including” are used in the present disclosure, another component may be added unless “only” is used. Unless otherwise stated, singular terms may include plural forms.

[0022] When interpreting a component, even if it is not explicitly described, the component is interpreted as including a range of tolerances.

[0023] When describing positional relationships, for example, when the positional relationship is described as "above", "above", "below", and "near", one or more components may be positioned between two other components unless "just" or "directly" is used.

[0024] When a component or layer is referred to as being "on" another component or layer, a component or layer may be directly on another component or layer, or another component or layer may be interposed between one component or layer and another component or layer.

[0025] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of this disclosure.

[0026] In the accompanying drawings, even if the same or similar elements are depicted in different drawings, they are represented by the same reference numerals.

[0027] The area and thickness of each component shown in the accompanying drawings are illustrative for the convenience of description and are not necessarily limited to the area and thickness of the configuration shown in this specification.

[0028] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be partially or wholly linked or combined with each other, and may be technically interconnected and driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0030] Figure 1 This is a system configuration diagram of a display device according to one embodiment of the present disclosure.

[0031] Reference Figure 1 According to one embodiment of the present disclosure, the display device 100 can provide both an image display function for displaying images and a touch sensing function, the touch sensing function being used to sense touch and / or touch coordinates with respect to touch operations performed by touch objects such as a user's finger and / or pen.

[0032] To provide image display functionality, a display device 100 according to one embodiment of the present disclosure may include: a display panel 110 having a plurality of data lines and a plurality of gating lines disposed therein and a plurality of sub-pixels defined by the plurality of data lines and the plurality of gating lines; a data driving circuit 120 configured to provide data signals to the plurality of data lines; a gating driving circuit 130 configured to provide gating signals to the plurality of gating lines; and a display controller 140 configured to control the operation of the data driving circuit 120 and the gating driving circuit 130.

[0033] Each of the data driver circuit 120, the gating driver circuit 130, and the display controller 140 can be implemented as one or more separate components (e.g., circuits). In some cases, two or more of the data driver circuit 120, the gating driver circuit 130, and the display controller 140 can be integrated into a single component. For example, the data driver circuit 120 and the display controller 140 can be implemented as a single integrated circuit (IC) chip.

[0034] To provide touch sensing functionality, a display device according to one embodiment of the present disclosure may include: a touch panel TP, the touch panel TP including a touch sensor; and a touch sensing circuit 150, the touch sensing circuit 150 supplying a touch drive signal to the touch panel TP, detecting a touch sensing signal from the touch panel TP, sensing whether a user touches the touch panel TP, and also sensing a touch position (touch coordinates) on the touch panel TP based on the detected touch sensing signal.

[0035] The touch sensing circuit 150 may include: a touch driving circuit 153 that supplies a touch driving signal to a touch panel TP and detects a touch sensing signal from the touch panel TP; and a touch controller 155 that senses whether a user touches the device and / or senses the touch location based on the touch sensing signal detected by the touch driving circuit 153.

[0036] The touch driver circuit 153 and the touch controller 155 can be implemented as separate components, or integrated into a single component if required.

[0037] Each of the data driving circuit 120, the gating driving circuit 130, and the touch sensing circuit 150 can be implemented as one or more integrated circuits, and in terms of electrical connection with the display panel 110, can be implemented as a chip-on-glass (COG) type, a chip-on-film (COF) type, or a cable-on-touch (TCP) type, and the gating driving circuit 130 can be implemented as a gate-in-panel (GIP) type.

[0038] Each of the circuit configurations for display driving (e.g., 120, 130, and 140) and the circuit configurations for touch sensing (e.g., 153 and 155) can be implemented as one or more separate components. If desired, one or more of the circuit configurations for display driving (e.g., 120, 130, and 140) and one or more of the circuit configurations for touch sensing (e.g., 153 and 155) can be functionally integrated and implemented as one or more components.

[0039] For example, the data driver circuit 120 and the touch driver circuit 153 can be integrated into one or more integrated circuit chips. When the data driver circuit 120 and the touch driver circuit 153 are integrated into two or more integrated circuit chips, each of the two or more integrated circuit chips can have both data driving and touch driving functions.

[0040] Furthermore, the display device 100 according to one embodiment of this disclosure can be of various types, such as an organic light-emitting display device, a micro-LED display device, a quantum dot display device, etc. Hereinafter, for ease of description, an example of a display device 100 corresponding to an organic light-emitting display device will be described.

[0041] The touch panel TP may include a touch sensor that can apply touch driving signals or detect touch sensing signals, and may also include touch routing wiring for electrically connecting the touch sensor and the touch driving circuit 153.

[0042] A touch sensor may include touch electrode lines. Each touch electrode line may be a single electrode rod or a type in which multiple touch electrodes are connected to each other. When each touch electrode line is a type in which multiple touch electrodes are connected to each other, each touch electrode line may include multiple touch electrodes and bridging patterns for connecting the touch electrodes.

[0043] In this case, the touch panel TP can be integrally formed with the display panel 110. During the manufacturing of the display panel 110, the touch panel TP can be directly formed on the display panel 110. Furthermore, some components of the touch-enabled components, including the touch panel TP, can be formed together with electrodes and signal lines used for display driving.

[0044] Figure 2 A display panel 110 according to one embodiment of the present disclosure is illustrated schematically.

[0045] Reference Figure 2 The display panel 110 may include a display area AA for displaying images and a non-display area NA that serves as the outer area of ​​the boundary line BL of the display area AA. The boundary line BL is the boundary line used to divide the display area AA and the non-display area NA.

[0046] In the display area AA, multiple sub-pixels for displaying images are arranged, and multiple electrodes or signal lines for driving the display are provided.

[0047] Additionally, a touch sensor for touch sensing and multiple touch routing lines electrically connected to the touch sensor can be set in the display area AA. Therefore, the display area AA can be referred to as a touch sensing area capable of touch sensing.

[0048] The non-display area NA may include link lines extending from or electrically connected to various signal lines disposed in the display area AA, and display pads electrically connected to the link lines. The display pads in the non-display area NA may be directly bonded to or electrically connected to the display driver circuits 120 and 130. For example, the display pads in the non-display area NA may include data pads, to which data link lines extending from or electrically connected to data lines are connected.

[0049] Furthermore, touch routing wiring electrically connected to the touch sensor located in the display area AA and touch pads electrically connected to the touch routing wiring can be located in the non-display area NA. The touch pads located in the non-display area NA can be coupled to or electrically connected to the touch driver circuit 153.

[0050] A portion of the multiple touch electrode lines disposed in the display area AA may extend into the non-display area NA, and one or more electrodes of the same material as the multiple touch electrode lines disposed in the display area AA may also be disposed in the non-display area NA. A portion of the outermost touch electrode among the multiple touch electrodes included in each of the multiple touch electrode lines disposed in the display area AA may extend into the non-display area NA, and one or more electrodes of the same material as the multiple touch electrodes included in each of the multiple touch electrode lines disposed in the display area AA may also be disposed there.

[0051] Touch sensors can exist in the display area AA, most of the touch sensors can exist in the display area AA, and some touch sensors can exist in the non-display area NA, or can exist across the display area AA and the non-display area NA.

[0052] Reference Figure 2 According to one embodiment of the present disclosure, the display panel 110 may include a dam area DA having at least one dam. The dam area DA prevents or at least reduces the outflow of the organic layer disposed in the encapsulation layer of the display area AA to the outside of the display panel 110.

[0053] The dam area DA can exist near the boundary, or it can exist at the boundary between the display area AA and the non-display area NA. For example, the dam area DA can refer to the area surrounding the point where the slope of the encapsulation layer becomes gentler in the direction downward along the inclined surface of the encapsulation layer.

[0054] At least one dam set in the dam area DA can be set to surround the display area AA, or it can be set outside a portion of the display area AA. For example, when the display panel 110 has a quadrilateral shape, the dam can be set to surround all four directions, or it can be set only in one to three directions.

[0055] In addition, at least one dam set in the dam area DA can be a single pattern or two or more disconnected patterns.

[0056] For example, when there are two dams in dam area DA, the dam closer to display area AA can be called the first dam, and the other dam can be called the second dam. In dam area DA, the first dam can exist in one direction while the second dam does not exist in that direction, and the first dam and the second dam can exist simultaneously in another direction.

[0057] Figure 3 An exemplary embodiment of a structure for embedding a touch panel in a display panel according to one embodiment of the present disclosure is illustrated.

[0058] Reference Figure 3 Multiple sub-pixels SP are arranged in the display area AA on the substrate 111 of the display panel 110.

[0059] Each sub-pixel in the sub-pixel SP may include a light-emitting element ED, a first transistor T1 for applying a drive current to the light-emitting element ED, a second transistor T2 for transmitting a data voltage VDATA to a first node N1 of the first transistor T1, and a capacitor Cst for maintaining a predetermined voltage within a frame.

[0060] The first transistor T1 may include a first node N1 to which a data voltage VDATA is applied, a second node N2 electrically connected to the light-emitting element ED, and a third node N3 to which a driving voltage VDD is applied from the driving voltage line DVL. The first node N1 may be a gate node, the second node N2 may be a source node or a drain node, and the third node N3 may be a drain node or a source node. The first transistor T1 may also be referred to as a driving transistor for driving the light-emitting element ED.

[0061] The light-emitting element (ED) may include an anode, a light-emitting layer, and a cathode. For each sub-pixel SP, the anode may be applied with a data voltage VDATA corresponding to a different pixel voltage, and the anode may be electrically connected to the second node N2 of the first transistor T1. The cathode may be applied with a base voltage VSS corresponding to a common voltage applied to all sub-pixels SP.

[0062] The light-emitting element (ED) can be either an ED using organic materials or an ED using inorganic materials. In an ED using organic materials, the light-emitting layer may include an organic light-emitting layer containing organic materials. In this case, the ED can be called an organic light-emitting diode (OLED).

[0063] The second transistor T2 is turned on or off by a scan signal SCAN applied through the gate line GL, and can be electrically connected between the data line DL and the first node N1 of the first transistor T1. The second transistor T2 can also be called a switching transistor. When the second transistor T2 is turned on by the scan signal SCAN, the second transistor T2 transmits the data voltage VDATA supplied from the data line DL to the first node N1 of the first transistor T1.

[0064] The capacitor Cst can be electrically connected between the first node N1 and the second node N2 of the first transistor T1.

[0065] like Figure 3 As shown, each sub-pixel in sub-pixel SP can have a structure including two transistors T1 and T2 and a capacitor Cst, but is not limited thereto. Each sub-pixel in sub-pixel SP can have a structure including three or more transistors and one or more capacitors.

[0066] Each of the first transistor T1 and the second transistor T2 can be an N-type transistor or a P-type transistor.

[0067] Furthermore, a light-emitting element (ED) and a pixel circuit can be provided on the display panel 110. The pixel circuit includes two transistors T1 and T2 or more transistors for applying a drive current to the light-emitting element (ED), and one or more capacitors Cst. Since the light-emitting element (ED) and the pixel circuit are susceptible to external moisture or oxygen, an encapsulation layer 114 can be provided on the display panel 110 to prevent or at least reduce the penetration of external moisture or oxygen into the light-emitting element (ED) and the pixel circuit.

[0068] The encapsulation layer 114 can be formed of one or more layers. For example, when the encapsulation layer 114 consists of multiple layers, it may include one or more inorganic encapsulation layers and one or more organic encapsulation layers. For example, the encapsulation layer 114 may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. In this case, the organic encapsulation layer may be located between the first and second inorganic encapsulation layers. Alternatively, the organic encapsulation layer may be formed on the dam region DA and may not be formed outside the dam region DA.

[0069] The first inorganic encapsulation layer can be formed on the cathode, closest to the light-emitting element (ED). For example, the first inorganic encapsulation layer can be formed from an inorganic insulating material capable of deposition at low temperatures, such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (Al2O3). Therefore, since the first inorganic encapsulation layer is deposited in a low-temperature atmosphere, damage to the light-emitting layer, which is susceptible to high-temperature atmospheres, can be prevented or at least reduced during the deposition process of the first inorganic encapsulation layer.

[0070] The organic encapsulation layer can be formed with an area smaller than that of the first inorganic encapsulation layer, and can be formed to expose both ends of the first inorganic encapsulation layer. The organic encapsulation layer acts as a buffer to alleviate stress between the layers caused by bending of the display device 100, and enhances planarization performance. For example, the organic encapsulation layer can be formed from organic insulating materials such as acrylic resin, epoxy resin, polyimide, polyethylene, or silicon carbide (SiOC).

[0071] A second inorganic encapsulation layer is disposed on the organic encapsulation layer and configured to cover the upper and side surfaces of each of the organic and first inorganic encapsulation layers. Therefore, the second inorganic encapsulation layer can prevent or at least reduce the penetration of external moisture or oxygen into the first inorganic and organic encapsulation layers. For example, the second inorganic encapsulation layer may comprise an inorganic insulating material such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (Al2O3).

[0072] In a display device 100 according to one embodiment of the present disclosure, a touch panel TP may be disposed on an encapsulation layer 114. Specifically, a touch sensor included in the touch panel TP may be disposed on the encapsulation layer 114. The touch panel TP may include a touch sensor, touch pads, touch routing wiring, etc.

[0073] Methods for sensing the presence of a touch and / or obtaining touch coordinates using a touch sensor can be methods for detecting changes in self-capacitance or methods for detecting changes in mutual capacitance. A display device 100 according to one embodiment of this disclosure describes a case where touch is sensed based on mutual capacitance.

[0074] Figure 4 The arrangement of touch sensors in a display panel according to one embodiment of the present disclosure is illustrated schematically.

[0075] Reference Figure 4 The touch sensor includes multiple first touch electrode lines 10 and multiple second touch electrode lines 20 disposed in an encapsulation layer 114 in the display area AA. As shown in the figure, for example, the multiple first touch electrode lines 10 are disposed along a first direction (horizontal direction), and the multiple second touch electrode lines 20 are disposed along a second direction (vertical direction).

[0076] Multiple first touch electrode lines 10 may include multiple first touch sensing electrodes and multiple first connecting electrodes for connecting the multiple first touch sensing electrodes. Additionally, second touch electrode lines 20 may include multiple second touch sensing electrodes and multiple second connecting electrodes for connecting the multiple second touch sensing electrodes. The first connecting electrodes and the first touch sensing electrodes are disposed on different layers. However, the second connecting electrodes are disposed in the gap between two adjacent first touch sensing electrodes to connect two second touch sensing electrodes that are vertically adjacent to each other. In this case, the second connecting electrodes and the second touch sensing electrodes are disposed on the same layer and formed of the same material as the second touch sensing electrodes. The second touch sensing electrodes extend to form the second connecting electrodes. That is, the second touch electrode lines 20 are integrated electrode lines with two different widths.

[0077] Each of the plurality of first touch sensing electrodes and the plurality of second touch sensing electrodes has a rectangular shape, but is not limited thereto. Each of the plurality of first touch sensing electrodes and the plurality of second touch sensing electrodes may have a rhomboid shape or a triangular shape, or the shapes of the first touch sensing electrodes and the second touch sensing electrodes may be a combination of rhomboid and triangular shapes. The detailed shape and arrangement of the first touch electrode line 10 and the second touch electrode line 20 will be described in detail in the following figures.

[0078] Multiple first touch electrode lines 10 and multiple second touch electrode lines 20 may be disposed inside the outer boundary line BL of the display area AA, but are not limited thereto. A portion of the first touch sensing electrode or the second touch sensing electrode adjacent to the outer boundary line BL of the display area AA may be disposed in the non-display area NA that extends beyond the outer boundary line BL of the display area AA.

[0079] Taking, for example, a display panel 110 according to one embodiment of the present disclosure having a rectangular shape with rounded corners, but not limited thereto. A first touch sensing electrode or a second touch sensing electrode disposed at the edge of the display panel 110 may be provided in the same shape as the edge of the display panel 110.

[0080] The display panel 110 includes: a first display panel area 110a, in which a plurality of first touch electrode lines 10 and a plurality of second touch electrode lines 20 are disposed to enable touch sensing, and a plurality of sub-pixels SP are disposed to display images; and a second display panel area 110b, which includes a curved area BA and extends from the first display panel area 110a to be disposed on the rear surface of the first display panel area 110a. The second display panel area 110b may include display pads, touch pads, and data driving circuitry 120. The second display panel area 110b is included in a non-display area NA.

[0081] In one embodiment, the data driving circuit 120 is disposed at the center of the second display panel area 110b, and the touch pads may be disposed on the left / right side relative to the data driving circuit 120. In the second display panel area 110b, the first touch pad area LPA is disposed on the left side of the data driving circuit 120, and the second touch pad area RPA is disposed on the right side of the data driving circuit 120.

[0082] Touch routing lines 30 and 40 include multiple first touch routing lines 30 and multiple second touch routing lines 40. The multiple first touch routing lines 30 descend along the inclined surface of the package layer 114 and are configured to electrically connect multiple first touch electrode lines 10 to multiple touch pads disposed in a first touch pad area LPA or a second touch pad area RPA. The multiple second touch routing lines 40 descend along the inclined surface of the package layer 114 and are configured to electrically connect multiple second touch electrode lines 20 to multiple touch pads disposed in the first touch pad area LPA or the second touch pad area RPA.

[0083] According to one embodiment of the present disclosure, the display device 100 can detect changes in the mutual capacitance between the first touch electrode line 10 and the second touch electrode line 20, thereby sensing finger touch or pen touch based on the changes.

[0084] Each of the plurality of first touch electrode lines 10 may be arranged along a first direction, and each of the plurality of second touch electrode lines 20 may be arranged along a second direction different from the first direction. The first direction and the second direction may be perpendicular to each other or may not be perpendicular to each other.

[0085] The multiple first touch routing lines 30 include external routing lines 33, which are connected to one or the other side of the multiple first touch electrode lines 10, are disposed along the non-display area NA of the display panel 110, and are connected to multiple touch pads disposed in the first touch pad area LPA or the second touch pad area RPA. Additionally, the multiple first touch routing lines 30 include internal routing lines 31, which are connected to one and the other side of the first touch sensing electrode (not the first touch electrode line 10), are disposed along a second direction in the display area AA of the display panel 110, and are connected to multiple touch pads disposed in the first touch pad area LPA or the second touch pad area RPA.

[0086] The first touch routing cabling 30 includes at least one internal routing cabling 31. As the number of internal routing cablings 31 increases, the number of external routing cablings 33 decreases, allowing for a reduction in the width of the non-display area NA.

[0087] In the case of multiple second touch electrode lines 20, touch pad areas LPA and RPA can be arranged along a second direction and can be arranged on one side of the multiple second touch electrode lines 20. Multiple second touch routing wiring 40 can be connected to one side of the multiple second touch electrode lines 20 and can be connected to multiple touch pads arranged in the first touch pad area LPA and the second touch pad area RPA.

[0088] exist Figure 4 In this configuration, only one side of the second touch electrode line 20 is connected to the second touch routing wiring 40, but it is not limited to this. The second touch routing wiring 40 can be connected to the other side of the second touch electrode line 20, and then connected to the touch pad. Furthermore, to improve touch sensitivity, the second touch routing wiring 40 can simultaneously include routing wiring connected to one side of the second touch electrode line 20 and connected to the touch pad, as well as routing wiring connected to the other side of the second touch electrode line 20 and connected to the touch pad.

[0089] The first touch routing wiring 30 and the second touch routing wiring 40 can be formed of the same material as the first touch electrode line 10 and the second touch electrode line 20, and can be disposed on the same layer as the first touch electrode line 10 and the second touch electrode line 20. The first touch routing wiring 30 and the second touch routing wiring 40 can be jumped above / below the bend area BA adjacent to the bend area BA to pass through the bend area BA, and can then be connected to wiring in other layers.

[0090] Furthermore, the internal routing wiring 31 is disposed in the gap between two adjacent second touch electrode lines 20. Additionally, the internal routing wiring 31 passes through multiple first touch electrode lines 10 between the first touch electrode lines 10 to be connected and the touch pad areas LPA and RPA. As described above, since the multiple first touch electrode lines 10 include multiple first touch sensing electrodes, the internal routing wiring 31 is disposed in the gap between two adjacent first touch sensing electrodes. Therefore, the internal routing wiring 31, the first touch sensing electrodes, and the second touch electrode lines 20 can be disposed on the same layer.

[0091] In a display panel 110 according to one embodiment of the present disclosure, an internal routing wiring 31 is disposed inside a display area AA in which touch sensing electrodes are disposed, thereby reducing the size of the non-display area NA.

[0092] In addition, such as Figure 4As shown, when the first touch electrode line 10 is positioned adjacent to the touch pad areas LPA and RPA, the first touch electrode line 10 and the touch pad can be connected via internal routing 31. When the first touch electrode line 10 is positioned relatively far from the touch pad areas LPA and RPA, the first touch electrode line 10 and the touch pad can be connected via external routing 33. The width of the internal routing 31 is smaller than the width of the external routing 33. For example, the internal routing 31 is 3 μm and the external routing 33 is 10 μm.

[0093] Because the width of the internal routing cabling 31 is smaller than that of the external routing cabling 33, the resistance of the internal routing cabling 31 is greater than that of the external routing cabling 33. Therefore, the first touch electrode line 10, which is closer to the touch pad areas LPA and RPA, is connected to the internal routing cabling 31, and the first touch electrode line 10, which is farther away from the touch pad areas LPA and RPA, is connected to the external routing cabling 33. This reduces the resistance difference of the first touch routing cabling 30, which varies depending on the position of the first touch electrode line 10.

[0094] Furthermore, since a resistance difference will still occur in the first touch route 30 despite the presence of internal routing 31, an equal resistance design area can be additionally provided in the second display panel area 110b adjacent to the touch pad areas LPA and RPA. The widths of the first touch route 30 provided in the equal resistance design area can be different from each other.

[0095] The second touch routing cabling 40 can also be set in the equal resistance design area.

[0096] The first grounding wiring 50 and the second grounding wiring 55 can be arranged along the periphery of the display area AA on the encapsulation layer 114 of the non-display area NA.

[0097] The first grounding wiring 50 quickly releases or blocks static electricity to prevent it from affecting touch sensing during touch sensing, thereby preventing or at least reducing touch sensing errors or degradation of sensing sensitivity. Therefore, the first grounding wiring 50 is disposed outside the second grounding wiring 55 relative to the display panel 110, thereby improving the electrostatic discharge blocking effect. Furthermore, '0V' corresponding to the grounding voltage can be applied to the first grounding wiring 50. Here, one side of the first grounding wiring 50 is connected to the first touch pad in the first touch pad area LPA, and the other side of the first grounding wiring 50 is connected to the second touch pad in the second touch pad area RPA.

[0098] The second grounding wiring 55 can be disposed along the periphery of the display area AA on the encapsulation layer 114 of the non-display area NA. The second grounding wiring 55 can be disposed parallel to the first grounding wiring 50. Figure 4In this configuration, the second grounding wiring 55 is positioned closer to the display area AA than the first grounding wiring 50, but is not limited thereto. Because the second grounding wiring 55 is closer to the display area AA than the first grounding wiring 50, it can be positioned closer to the first touch electrode line 10 and the second touch electrode line 20, thereby reducing touch noise between the first touch electrode line 10 and the second touch electrode line 20 and improving touch performance. A voltage with the same range as that applied to the second touch electrode line 20 can be applied to the second grounding wiring 55. Here, one side of the second grounding wiring 55 can be connected to the first touch pad in the first touch pad area LPA, and the other side of the second grounding wiring 55 can be connected to the second touch pad in the second touch pad area RPA.

[0099] like Figure 4 As shown, the first grounding wiring 50 and the second grounding wiring 55 are formed by cutting the wiring once, without forming a closed loop. Therefore, the first grounding wiring 50 and the second grounding wiring 55 can be prevented or at least reduced from bursting (being damaged) due to external noise.

[0100] Furthermore, the disconnection positions of the first grounding wiring 50 and the second grounding wiring 55 are located away from the touch pad areas LPA and RPA while pointing towards the center of the upper end of the display panel 110. Therefore, based on the disconnection position, the resistance of the left and right wirings of each of the first grounding wiring 50 and the second grounding wiring 55 can be adjusted similarly.

[0101] Furthermore, the disconnection points of the first grounding wire 50 and the second grounding wire 55 can be different from each other. When the disconnection points of the first grounding wire 50 and the second grounding wire 55 are the same, static electricity or noise may flow into the first grounding wire 50 or the second grounding wire 55. Therefore, the first grounding wire 50 and the second grounding wire 55 have different disconnection points, thereby effectively preventing or at least reducing static electricity and noise.

[0102] As described above, enlarged views of areas 'A1' and 'A2' will be shown to illustrate the specific shape and arrangement of the first touch electrode line 10 and the second touch electrode line 20.

[0103] Figure 5 According to one implementation method Figure 4 An enlarged view of area 'A1'.

[0104] Reference Figure 5 The 'A1' area corresponds to the area where the internal routing wiring 31 passes through the first touch electrode line 10.

[0105] When any one of the multiple first touch electrode lines 10 is referred to as the eleventh (11th) touch electrode line 11, four of the multiple eleventh touch sensing electrodes included in the eleventh touch electrode line 11 are included in the 'A1' region. The four eleventh touch sensing electrodes are spaced apart from each other and are respectively referred to as the 111th sub-touch sensing electrode 11a, the 112th sub-touch sensing electrode 11b, the 113th sub-touch sensing electrode 11c, and the 114th sub-touch sensing electrode 11d.

[0106] The distances between the 111th sub-touch sensing electrode 11a and the 112th sub-touch sensing electrode 11b, the distances between the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c, and the distances between the 113th sub-touch sensing electrode 11c and the 114th sub-touch sensing electrode are the same, but not limited to these.

[0107] The 11th touch electrode line 11 includes a plurality of first connection electrodes 15ce, which are configured to connect the 111th sub-touch sensing electrode 11a and the 112th sub-touch sensing electrode 11b to each other, to connect the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c to each other, and to connect the 113th sub-touch sensing electrode 11c and the 114th sub-touch sensing electrode 11d to each other. The plurality of first connection electrodes 15ce are disposed on a different layer than the 111th sub-touch sensing electrode 11a, the 112th sub-touch sensing electrode 11b, the 113th sub-touch sensing electrode 11c, and the 114th sub-touch sensing electrode 11d. Specifically, each of the plurality of first connection electrodes 15ce includes a connection wiring 15cea and a contact electrode 15ceb.

[0108] The accompanying drawings show two first connecting electrodes 15ce for connecting adjacent sub-touch sensing electrodes, but are not limited thereto. A single number of first connecting electrodes 15ce or three or more first connecting electrodes 15ce can be provided.

[0109] Additionally, region 'A1' includes two adjacent second touch electrode lines among a plurality of second touch electrode lines 20. The two second touch electrode lines are spaced apart from each other and are respectively referred to as touch electrode line 21 (21) and touch electrode line 22 (22).

[0110] The 21st touch electrode line 21 includes a 211th sub-touch sensing electrode 21a, a 212th sub-touch sensing electrode 21b, and a 21st connecting electrode 21ce for connecting the 211th sub-touch sensing electrode 21a and the 212th sub-touch sensing electrode 21b together. The 21st touch electrode line 21 is spaced apart from the 111th sub-touch sensing electrode 11a and the 112th sub-touch sensing electrode 11b.

[0111] The 22nd touch electrode line 22 includes a 221st sub-touch sensing electrode 22a, a 222nd sub-touch sensing electrode 22b, and a 22nd connecting electrode 22ce for connecting the 221st sub-touch sensing electrode 22a and the 222nd sub-touch sensing electrode 22b together. The 22nd touch electrode line 22 is spaced apart from the 113th sub-touch sensing electrode 11c and the 114th sub-touch sensing electrode 11d.

[0112] like Figure 5 As shown, the 11th touch electrode line 11, the 21st touch electrode line 21, and the 22nd touch electrode line 22 are adjacent to each other, and the edge of the touch sensing electrode included in each touch electrode line may include multiple vertices in a zigzag pattern, but is not limited thereto. For example, the edge of the touch sensing electrode may be a straight line or a curve. By forming the edge of the touch sensing electrode in a zigzag shape, the visibility of the touch electrode lines can be reduced.

[0113] Furthermore, internal routing wiring 31 is disposed in the gap area between the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c. Internal routing wiring 31 is spaced apart from the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c. Internal routing wiring 31 may be disposed on the same layer as the sub-touch sensing electrodes and may be formed of the same material as the sub-touch sensing electrodes.

[0114] The third grounding wiring 51 can also be disposed in the gap between the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c. The third grounding wiring 51 can be disposed in the gap between the 112th sub-touch sensing electrode 11b and the internal routing wiring 31, and in the gap between the internal routing wiring 31 and the 113th sub-touch sensing electrode 11c. The third grounding wiring 51 is spaced apart from the 112th sub-touch sensing electrode 11b, the 113th sub-touch sensing electrode 11c, and the internal routing wiring 31. The third grounding wiring 51 can be disposed on the same layer as the sub-touch sensing electrodes and can be formed of the same material as the sub-touch sensing electrodes. The third grounding wiring 51 can reduce noise in signals transmitted through the internal routing wiring 31 by blocking signals transmitted from the area adjacent to the internal routing wiring 31. Specifically, since the internal routing wiring 31 is connected to any one of the first touch electrode lines 10, the third grounding wiring 51 prevents unnecessary capacitance formation between touch signals transmitted through the second touch electrode line 20 adjacent to the first touch electrode line and touch signals transmitted through the internal routing wiring 31.

[0115] Since both the internal routing wiring 31 and the third grounding wiring 51 are disposed adjacent to the sub-touch sensing electrode, the internal routing wiring 31 and the third grounding wiring 51 are formed with the same shape as the sub-touch sensing electrode. Therefore, the internal routing wiring 31 and the third grounding wiring 51 can have a serrated shape, but are not limited thereto. For example, the internal routing wiring 31 and the third grounding wiring 51 can be in the form of a straight line or a curve.

[0116] Therefore, when the third grounding wire 51 is connected to the first grounding wire 50, the third grounding wire 51 can receive grounding voltage through the first grounding wire 50, but is not limited to this. For example, the third grounding wire 51 can be floating, and thus can act as a dummy electrode.

[0117] Figure 6 According to one implementation method Figure 4 An enlarged view of area 'A2'.

[0118] Reference Figure 6 The 'A2' area is the region where the internal routing wiring 31 is electrically connected to the first touch electrode line 10. When any one of the multiple first touch electrode lines 10 is referred to as the twelfth (12th) touch electrode line 12, four of the multiple 12th touch sensing electrodes included in the 12th touch electrode line 12 are included in the 'A2' area. The four 12th touch sensing electrodes are spaced apart from each other and are respectively referred to as the 121st sub-touch sensing electrode 12a, the 122nd sub-touch sensing electrode 12b, the 123rd sub-touch sensing electrode 12c, and the 124th sub-touch sensing electrode 12d.

[0119] The distances between the 121st sub-touch sensing electrode 12a and the 122nd sub-touch sensing electrode 12b, the distances between the 122nd sub-touch sensing electrode 12b and the 123rd sub-touch sensing electrode 12c, and the distances between the 123rd sub-touch sensing electrode 12c and the 124th sub-touch sensing electrode 12d are the same, but not limited to these.

[0120] The 12th touch electrode line 12 includes a plurality of first connection electrodes 15ce, which are configured to connect the 121st sub-touch sensing electrode 12a and the 122nd sub-touch sensing electrode 12b to each other, to connect the 122nd sub-touch sensing electrode 12b and the 123rd sub-touch sensing electrode 12c to each other, and to connect the 123rd sub-touch sensing electrode 12c and the 124th sub-touch sensing electrode 12d to each other. The plurality of first connection electrodes 15ce are disposed on a different layer than the 121st sub-touch sensing electrode 12a, the 122nd sub-touch sensing electrode 12b, the 123rd sub-touch sensing electrode 12c, and the 124th sub-touch sensing electrode 12d. As described above, each of the plurality of first connection electrodes 15ce includes a connection wiring 15cea and a contact electrode 15ceb.

[0121] The accompanying drawings show two first connection electrodes 15ce for connecting adjacent sub-touch sensing electrodes, but are not limited thereto. A single first connection electrode 15ce or three or more first connection electrodes 15ce can be provided.

[0122] Additionally, region 'A2' includes two adjacent second touch electrode lines among a plurality of second touch electrode lines 20. The two second touch electrode lines are spaced apart from each other and are respectively referred to as touch electrode line 21 (21) and touch electrode line 22 (22).

[0123] The 21st touch electrode line 21 includes a 211th sub-touch sensing electrode 21a, a 212th sub-touch sensing electrode 21b, and a 21st connection electrode 21ce for connecting the 211th sub-touch sensing electrode 21a and the 212th sub-touch sensing electrode 21b. The 21st touch electrode line 21 is spaced apart from the 121st sub-touch sensing electrode 12a and the 122nd sub-touch sensing electrode 12b.

[0124] The 22nd touch electrode line 22 includes a 221st sub-touch sensing electrode 22a, a 222nd sub-touch sensing electrode 22b, and a 22nd connection electrode 22ce for connecting the 221st sub-touch sensing electrode 22a and the 222nd sub-touch sensing electrode 22b. The 22nd touch electrode line 22 is spaced apart from the 123rd sub-touch sensing electrode 12c and the 124th sub-touch sensing electrode 12d.

[0125] like Figure 6 As shown, the 12th touch electrode line 12, the 21st touch electrode line 21, and the 22nd touch electrode line 22 are adjacent to each other, and the edge of the touch sensing electrode included in each touch electrode line may include multiple vertices in a zigzag pattern, but is not limited thereto. For example, the edge of the touch sensing electrode may be a straight line or a curve. By forming the edge of the touch sensing electrode in a zigzag shape, the visibility of the touch electrode lines can be reduced.

[0126] Furthermore, internal routing wiring 31 is disposed in the gap area between the 122nd sub-touch sensing electrode 12b and the 123rd sub-touch sensing electrode 12c. Internal routing wiring 31 is spaced apart from the 122nd sub-touch sensing electrode 12b and the 123rd sub-touch sensing electrode 12c. Internal routing wiring 31 can be disposed in the same layer as the sub-touch sensing electrodes and can be formed of the same material as the sub-touch sensing electrodes.

[0127] The third grounding wiring 51 can also be disposed in the gap between the 122nd sub-touch sensing electrode 12b and the 123rd sub-touch sensing electrode 12c. The third grounding wiring 51 can be disposed in the gap between the 122nd sub-touch sensing electrode 12b and the internal routing wiring 31, and in the gap between the internal routing wiring 31 and the 123rd sub-touch sensing electrode 12c. The third grounding wiring 51 is spaced apart from the 122nd sub-touch sensing electrode 12b, the 123rd sub-touch sensing electrode 12c, and the internal routing wiring 31. The third grounding wiring 51 can be disposed in the same layer as the sub-touch sensing electrodes and can be formed of the same material as the sub-touch sensing electrodes. The third grounding wiring 51 can reduce the noise of signals transmitted through the internal routing wiring 31 by blocking signals transmitted from the area adjacent to the internal routing wiring 31. Specifically, since the internal routing wiring 31 is connected to the 12th touch electrode line 12, the third ground wiring 51 prevents unnecessary capacitance formation between the touch signal transmitted through the 21st touch electrode line 21 and the 22nd touch electrode line 22 adjacent to the 12th touch electrode line 12 and the touch signal transmitted through the internal routing wiring 31.

[0128] Therefore, when the opening area OA is formed in the third grounding wiring 51 disposed between the internal routing wiring 31 and the 123rd sub-touch sensing electrode 12c, the internal routing wiring 31 can be electrically connected to the 12th touch electrode line 12. The internal routing wiring 31 can be electrically connected to the 12th touch electrode line 12 depending on whether the opening area OA is formed in any one or both of the third grounding wirings 51 disposed between the internal routing wiring 31 and the adjacent sub-touch sensing electrode.

[0129] Since both the internal routing wiring 31 and the third grounding wiring 51 are disposed adjacent to the sub-touch sensing electrode, the internal routing wiring 31 and the third grounding wiring 51 are formed to have the same shape as the sub-touch sensing electrode. Therefore, the internal routing wiring 31 and the third grounding wiring 51 can have a serrated shape, but are not limited thereto. For example, the internal routing wiring 31 and the third grounding wiring 51 can be in the form of a straight line or a curve.

[0130] Figure 7 According to one embodiment, along Figure 5 The cross-sectional view of V-V'. Specifically, Figure 7 For example Figure 5 A cross-sectional view of the contact electrode 15ceb connected to the 112th sub-touch sensing electrode 11b, the third ground wiring 51, the internal routing wiring 31, and the contact electrode 15ceb connected to the 113th sub-touch sensing electrode 11c in area 'A1'.

[0131] Reference Figure 7 An encapsulation layer 114 is disposed on a TFT substrate 111'. The TFT substrate 111' includes a substrate 111, a thin-film transistor (TFT) disposed on the substrate 111, and a light-emitting element (ED) disposed on the thin-film transistor TFT. Figure 7 (Not shown in the image).

[0132] As described above, the encapsulation layer 114 may include a first inorganic encapsulation layer 114a, an organic encapsulation layer 114b, and a second inorganic encapsulation layer 114c.

[0133] A touch buffer layer 115 can be disposed on the encapsulation layer 114. The touch buffer layer 115 can be disposed below the first touch electrode line 10 and the second touch electrode line 20. The touch buffer layer 115 is disposed between the touch sensor and the light-emitting element ED, such that the separation distance between the cathode of the light-emitting element ED and the touch sensor can be designed to maintain a predetermined minimum separation distance. Therefore, the parasitic capacitance between the touch sensor and the cathode can be reduced, and touch sensitivity degradation caused by parasitic capacitance can be prevented. Similarly, the touch buffer layer 115 can also be disposed below the touch routing wiring.

[0134] The touch buffer layer 115 can be formed of an organic insulating material that can be formed at a predetermined temperature (e.g., 100°C) or lower and has a low dielectric constant (e.g., 1-3) to prevent or at least reduce damage to the light-emitting layer, including organic materials susceptible to high temperatures. For example, the touch buffer layer 115 can be formed of an acrylic-based material, an epoxy resin-based material, or a siloxane-based material such as silicon nitride (SiNx). Furthermore, the touch buffer layer 115, which has planarization properties and utilizes an organic insulating material, can prevent or at least reduce damage to the encapsulation layer 114 caused by bending of the organic light-emitting display device and damage to the touch sensor disposed on the touch buffer layer 115.

[0135] The contact electrode 15ceb of the first connecting electrode 15ce is disposed on the touch buffer layer 115. The touch insulating layer 117 is disposed on the contact electrode 15ceb. The touch insulating layer 117 may include inorganic insulating materials such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), and aluminum oxide (Al2O3).

[0136] The touch insulating layer 117 includes a plurality of contact holes formed in the region corresponding to the contact electrode 15ceb. A 112th sub-touch sensing electrode 11b, a third ground wiring 51, an internal routing wiring 31, and a 113th sub-touch sensing electrode 11c are disposed on the touch insulating layer 117. The 112th sub-touch sensing electrode 11b is connected to the contact electrode 15ceb through the contact holes formed in the touch insulating layer 117, and the 113th sub-touch sensing electrode 11c is connected to the contact electrode 15ceb through the contact holes formed in the touch insulating layer 117.

[0137] exist Figure 7 In the illustration, the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c are illustrated as a mesh with multiple openings OP, but are not limited thereto. For example, the 112th sub-touch sensing electrode 11b and the 113th sub-touch sensing electrode 11c can be plate-shaped electrode metal without openings.

[0138] In other words, the first touch electrode line 10 and the second touch electrode line 20 can be a mesh-like structure with multiple openings (OP) or a plate-like electrode metal without openings. When the first touch electrode line 10 and the second touch electrode line 20 are mesh-like structures with multiple openings (OP), the touch electrode lines can be a single layer or multiple layers formed of conductive materials such as aluminum (Al), titanium (Ti), silver (Ag), and copper (Cu). When the first touch electrode line 10 and the second touch electrode line 20 are plate-like electrode metals without openings, the touch electrode lines can be electrode metals made of transparent electrode materials, allowing light emitted from the TFT substrate 111' to be transmitted upwards.

[0139] The contact electrode 15ceb, the 11th touch electrode line 11, the third ground wiring 51, and the internal routing wiring 31 can be formed of the same material.

[0140] A touch protection layer 118 is disposed on the 11th touch electrode line 11, the third ground wiring 51, and the internal routing wiring 31. The touch protection layer 118 covers the 11th touch electrode line 11, the third ground wiring 51, and the internal routing wiring 31, thereby preventing or at least reducing corrosion of the wiring by external moisture. The touch protection layer 118 may be formed of an organic insulating material such as acrylic resin, epoxy resin, or polyimide.

[0141] For example, the top module 119 of the cover glass is attached to the touch protection layer 118 via an optical adhesive such as optically clear adhesive OCA or optically clear resin OCR. In this case, a finger or pen used for touching comes into contact with the cover glass.

[0142] Figure 8 According to one embodiment, along Figure 6 The cross-sectional view of VI-VI'. Specifically, Figure 8 For example, in Figure 6 A cross-sectional view of the 122nd sub-touch sensing electrode 12b, the third ground wiring 51, the internal routing wiring 31, the opening area OA of the third ground wiring 51, and the 123rd sub-touch sensing electrode 12c in area 'A2'.

[0143] Reference Figure 8 The diagram shows a cross-section of the internal routing wiring 31 electrically connected to the 12th touch electrode line 12.

[0144] Encapsulation layer 114, touch buffer layer 115 and touch insulating layer 117 are disposed on TFT substrate 111'. Sub-touch sensing electrode 12b, sub-touch sensing electrode 21a, third ground wiring 51, internal routing wiring 31 and sub-touch sensing electrode 12c are disposed on touch insulating layer 117.

[0145] exist Figure 8 In this embodiment, the 122nd sub-touch sensing electrode 12b, the 211th sub-touch sensing electrode 21a, and the 123rd sub-touch sensing electrode 12c are illustrated as a mesh with multiple openings (OPs), but are not limited thereto. For example, the 122nd sub-touch sensing electrode 12b, the 211th sub-touch sensing electrode 21a, and the 123rd sub-touch sensing electrode 12c can be plate-shaped electrode metal without openings. The 122nd sub-touch sensing electrode 12b, the 211th sub-touch sensing electrode 21a, the third ground wiring 51, the internal routing wiring 31, and the 123rd sub-touch sensing electrode 12c can be formed of the same material.

[0146] Reference Figure 6The internal routing wiring 31 is connected to the 123rd sub-touch sensing electrode 12c through the opening area OA. For example... Figure 8 As shown, in the opening area OA, the internal routing wiring 31 is directly connected to the 123rd sub-touch sensing electrode 12c.

[0147] A touch protection layer 118 is disposed on the 12th touch electrode line 12, the 21st touch electrode line 21, the third ground wiring 51, and the internal routing wiring 31. For example, the top module 119 of the cover glass is attached to the touch protection layer 118 by an optical adhesive such as optically clear adhesive OCA or optically clear resin OCR. In this case, a finger or pen used for touching comes into contact with the cover glass.

[0148] Figure 9 According to one embodiment, along Figure 4 A cross-sectional view of IV-IV'. Figure 9 The display area AA, the non-display area NA of the display panel 110, and the boundary area between the display area AA and the non-display area NA are shown. Repeated descriptions of the above components will be omitted.

[0149] Thin-film transistor 90 and light-emitting element ED are disposed on substrate 111 in display area AA. Substrate 111 may be formed of a flexible material such as glass or polyimide. A buffer layer may be additionally disposed between substrate 111 and thin-film transistor 90. The buffer layer can reduce the penetration of moisture or impurities through substrate 111.

[0150] In this case, thin-film transistor 90 represents the first transistor T1 mentioned above.

[0151] exist Figure 9 In this diagram, the thin-film transistor 90 is illustrated as a coplanar structure with a top gate, but is not limited thereto. The structure of the thin-film transistor 90 can be formed in various ways.

[0152] An active layer 91 is disposed on a substrate 111, and a gate insulating film 81 is disposed to cover the active layer 91. A gate 92 is disposed on the gate insulating film 81 while overlapping with the active layer 91, and a passivation layer 83 is disposed on the gate 92 to cover the gate 92. A source 93 and a drain 94 are disposed on the passivation layer 83. The source 93 and the drain 94 are connected to the active layer 91 through contact holes formed in the passivation layer 83 and the gate insulating film 81. The gate insulating film 81 and the passivation layer 83 may each consist of a single layer or multiple layers of inorganic insulating materials such as silicon oxide (SiOx) or silicon nitride (SiNx), but are not limited thereto. The gate 92, source 93, and drain 94 may include conductive materials, such as copper (Cu), aluminum (Al), molybdenum (Mo), nickel (Ni), titanium (Ti), chromium (Cr), or alloys thereof, but are not limited thereto. The active layer 91 may be formed of a semiconductor material such as oxide semiconductor, amorphous silicon, or polycrystalline silicon, but is not limited thereto.

[0153] A first planarization layer 112 for covering the thin-film transistor 90 is disposed on the thin-film transistor 90. An intermediate electrode IE is disposed on the first planarization layer 112, and the intermediate electrode IE is connected to the source electrode 93 through a contact hole formed in the first planarization layer 112. The intermediate electrode IE may be made of a conductive material, such as copper Cu, aluminum Al, molybdenum Mo, nickel Ni, titanium Ti, chromium Cr, or alloys thereof, but is not limited thereto.

[0154] A second planarization layer 113 for covering the intermediate electrode IE is disposed on the intermediate electrode IE. An anode AN is disposed on the second planarization layer 113 and is connected to the intermediate electrode IE through a contact hole formed in the second planarization layer 113. The anode AN may be formed of a transparent conductive material, such as, but not limited to, indium tin oxide (ITO) or indium zinc oxide (IZO).

[0155] Each of the first planarization layer 112 and the second planarization layer 113 is a layer for reducing the step difference beneath it and may be formed of an organic insulating material. For example, the first planarization layer 112 and the second planarization layer 113 may be formed of photoacrylic acid, polyimide, benzocyclobutene resin or acrylate resin.

[0156] A dam layer BN is disposed on the anode AN and configured to cover a portion of the anode AN. The dam layer BN covers the edge of the anode and the contact hole area on which the second planarization layer 113 of the anode is disposed. The dam layer BN can be disposed at the boundary of a sub-pixel.

[0157] The light-emitting layer EM is disposed on the embankment layer BN between adjacent embankment layers BN. The cathode CA is disposed on the light-emitting layer EM and configured to cover the light-emitting layer EM.

[0158] An encapsulation layer 114 for protecting the thin-film transistor 90 and the light-emitting element ED is disposed on the cathode CA, and a touch buffer layer 115 is disposed on the encapsulation layer 114. A sensing electrode SE is disposed on the touch buffer layer 115, and a touch protection layer 118 is disposed on the sensing electrode SE to cover the sensing electrode SE.

[0159] The sensing electrode SE includes a first touch electrode line 10 and a second touch electrode line 20. Additionally, a portion of the sensing electrode SE is configured to overlap with the contact electrode 15ceb.

[0160] Furthermore, in the non-display area NA, the dam DM can be disposed on the same layer as the second planarization layer 113. The dam DM can prevent the encapsulation layer 114, more specifically the organic encapsulation layer 114b, from overflowing to the outside of the substrate 111. Therefore, two dam DMs can be disposed side by side as shown, but are not limited thereto. For example, three dam DMs can be disposed. The dam DM can be formed by a single layer or multiple layers. For example, the dam DM can be formed as a two-layer structure in which the second planarization layer 113 and the dam layer BN are stacked, or as a three-layer structure in which the first planarization layer 112, the second planarization layer 113, and the dam layer BN are stacked.

[0161] The first inorganic encapsulation layer 114a and the second inorganic encapsulation layer 114c can be disposed on the edge portion of the substrate 111 that extends beyond the two dams DM. The organic encapsulation layer 114 does not exceed the dams DM disposed in the periphery.

[0162] The touch buffer layer 115 and the touch insulating layer 117 can also extend to the non-display area NA.

[0163] External routing wiring 33, second grounding wiring 55, and first grounding wiring 50 can be disposed in the non-display area NA and can be formed as a double-layer structure. Specifically, external routing wiring 33, second grounding wiring 55, and first grounding wiring 50 can be implemented in a double-layer form, in which conductive layers are disposed above and below the touch insulating layer 117, and the conductive layers formed on the upper and lower parts are connected through contact holes formed in the touch insulating layer 117. The conductive layer disposed below the touch insulating layer 117 in the non-display area NA can be formed on the same layer as the contact electrode 15ceb, using the same material as the contact electrode 15ceb, and can be referred to as the lower conductive layer BC. Therefore, the resistance of external routing wiring 33, second grounding wiring 55, and first grounding wiring 50 can be reduced.

[0164] The touch protection layer 118 can protect the wiring by covering not only the sensing electrode SE, but also the external routing wiring 33, the second grounding wiring 55 and the first grounding wiring 50 located in the non-display area NA.

[0165] Figure 10 For along Figure 4 The cross-sectional view of B-B'. In Figure 10 The non-display area NA, jumper area JA, and curved area BA of the display panel 110 are shown. Repeated descriptions of these components will be omitted.

[0166] The jumper area JA is the area (or jumper) where a wire contacts another wire that passes through the bend area BA before the wire passes through the bend area BA.

[0167] The bending region BA corresponds to the boundary between the first display panel area 110a and the second display panel area 110b, and the second display panel area 110b can be bent by means of the bending region BA and overlap with the rear surface of the first display panel area 110a.

[0168] A first conductive layer C1 is disposed on the support substrate 111” of the non-display area NA. The support substrate 111” is an assembly including substrate 111, gate insulating film 81 and passivation layer 83, and is simply represented as a single layer for convenience. The first conductive layer C1 can be formed of the same material as the source 93 and drain 94 and can be disposed on the same layer as the source 93 and drain 94. The first conductive layer C1 can be disposed in the non-display area NA and connected to the source 93 or drain 94, and can also be referred to as a link wiring. In addition, the first conductive layer C1 can be additionally disposed in the jumper area JA and the bending area BA.

[0169] A first planarization layer 112 is disposed on a first conductive layer C1, and a second conductive layer C2 is disposed on a first planarization layer 112. The first planarization layer 112 is disposed in a non-display area NA, excluding the jumper area JA, thereby preventing electrical connection between the first conductive layer C1 and the second conductive layer C2.

[0170] The second conductive layer C2 can be disposed on the same layer as the intermediate electrode IE in the non-display area NA and can be formed of the same material as the intermediate electrode IE. The second conductive layer C2 is in contact with the first conductive layer C1 in the jumper area JA. The second conductive layer C2 can be disposed together with the first conductive layer C1 in the bending area BA, but is not limited thereto. For example, either the first conductive layer C1 or the second conductive layer C2 can be disposed in the bending area BA, or the first conductive layer C1 and the second conductive layer C2 can be disposed in the bending area BA without overlapping each other.

[0171] An insulating layer 85 may be additionally disposed between the first conductive layer C1 and the first planarization layer 112. The insulating layer 85 may be disposed in the non-display area NA, excluding the jumper area JA and the bending area BA, and may also be disposed on the thin-film transistor 90 in the display area AA. The insulating layer 85 may be formed of an inorganic insulating material such as silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiON).

[0172] The second planarization layer 113 is disposed on the second conductive layer C2. The second planarization layer 113 is disposed in the non-display area NA, excluding the jumper area JA.

[0173] A third conductive layer C3 is disposed on the second planarization layer 113 in the non-display area NA. A touch insulating layer 117 is disposed on the third conductive layer C3, and a fourth conductive layer C4 is disposed on the touch insulating layer 117. The third conductive layer C3 may be formed of the same material as the lower conductive layer and is disposed on the same layer as the lower conductive layer BC. The fourth conductive layer C4 may be formed of the same material as the sensing electrode SE and is disposed on the same layer as the sensing electrode SE. The third conductive layer C3 and the fourth conductive layer C4 are electrodes constituting the touch routing wirings 30 and 40 and are connected to the vicinity of the bending area BA. The third conductive layer C3 and the fourth conductive layer C4 are in contact with each other in the non-display area NA through the opening area of ​​the touch insulating layer 117, and the fourth conductive layer C4 is disposed while being connected to the jumper area JA.

[0174] The touch insulating layer 117 has an opening in the jumper area JA, and the second conductive layer C2 and the fourth conductive layer C4 are in contact with each other through the opening of the touch insulating layer 117. In the jumper area JA, the first conductive layer C1, the second conductive layer C2, and the fourth conductive layer C4 are electrically connected. Touch signals provided by touch routing wirings 30 and 40 are transmitted through the fourth conductive layer C4 to the first conductive layer C1 and the second conductive layer C2 in the jumper area JA, and are provided to the touch pads in the first touch pad area LPA or the second touch pad area RPA through the first conductive layer C1 and / or the second conductive layer C2 disposed in the bending area BA.

[0175] Reference Figure 4 The jumper area JA mentioned above can be set on the bending area BA. Alternatively, the jumper area JA can be set below the bending area BA.

[0176] Organic insulating materials of only the first planarization layer 112, the second planarization layer 113, and the touch protection layer 118 can be disposed in the bending area BA, thereby preventing or at least reducing cracking of the display panel 110 and disconnection of the first conductive layer C1 and / or the second conductive layer C2.

[0177] The display device according to various embodiments of the present disclosure can be described as follows.

[0178] A display device according to one embodiment of the present disclosure may include: a substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; an encapsulation layer for covering the plurality of sub-pixels; a first touch electrode line including a plurality of first touch sensing electrodes disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; a second touch electrode line disposed in the same plane as the first touch electrode line and disposed along a second direction intersecting the first direction; a plurality of pads disposed on one side of the substrate; a first touch routing wiring configured to connect some of the first touch electrode lines and some of the pads, and disposed between the plurality of first touch sensing electrodes along the second direction; and a second touch routing wiring configured to connect the second touch electrode lines to some of the other pads among the plurality of pads.

[0179] According to another feature of this disclosure, it may also include connection wiring configured to connect a plurality of first touch sensing electrodes that are adjacent to each other along a first direction.

[0180] According to another feature of this disclosure, the connection wiring can be disposed on a different layer from the first touch electrode line and the second touch electrode line.

[0181] According to another feature of this disclosure, the first touch electrode line and the second touch electrode line may have a rectangular shape, a rhombus shape or a triangular shape.

[0182] According to another feature of this disclosure, the edges of each of the first touch electrode line and the second touch electrode line may have a serrated shape.

[0183] According to another feature of this disclosure, a portion of the first touch routing wiring may be located in the display area.

[0184] According to another feature of this disclosure, the first touch routing wiring can be disposed on the same layer as the first touch electrode wire.

[0185] According to another feature of this disclosure, the second touch routing wiring can be located in the non-display area and is a double wiring with two overlapping electrodes.

[0186] According to another feature of this disclosure, one of the two electrodes, the lower one, can be disposed in the same layer as the connecting wiring and formed of the same material as the connecting wiring.

[0187] According to another feature of this disclosure, the substrate may include: a first region in which a first touch electrode line and a second touch electrode line are disposed; a second region protruding from the first region; and a bending region disposed between the first region and the second region and configured to bend the second region to the rear surface of the first region.

[0188] According to another feature of this disclosure, the multiple sub-pixels may include a pixel circuit containing multiple thin-film transistors and a light-emitting element, and multiple wirings disposed on the same layer as some of the electrodes constituting the multiple thin-film transistors are disposed in the curved region, and a first touch electrode line and a second touch electrode line are connected to the multiple wirings.

[0189] According to another feature of this disclosure, the second region may include a jumper region configured to connect the first touch electrode line and a plurality of wirings in a region adjacent to the bending region, and to connect the second touch electrode line and a plurality of wirings.

[0190] According to another feature of this disclosure, the display device may further include a grounding wiring disposed in the display area between the first touch routing wiring and a plurality of first touch sensing electrodes.

[0191] According to another feature of this disclosure, the grounding wiring can be disposed on the same layer as the plurality of first touch sensing electrodes and first touch routing wiring, and spaced apart from the plurality of first touch sensing electrodes and first touch routing wiring.

[0192] According to another feature of this disclosure, the grounding wiring can be disposed along the periphery of the substrate in the non-display area, and a grounding voltage is applied to the grounding wiring.

[0193] According to another feature of this disclosure, in some of the touch routing lines of the first touch routing line and the second touch routing line, a constant resistance structure for adjusting the resistance of the first touch routing line and the second touch routing line can be provided near the pad area.

[0194] According to another feature of this disclosure, the display device may include: a substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; a dam disposed on the substrate near the boundary between the display area and the non-display area; an encapsulation layer for covering the plurality of sub-pixels and the dam; a first touch electrode line including a plurality of first touch sensing electrodes disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; a second touch electrode line disposed in the same plane as the first touch electrode line and disposed along a second direction intersecting the first direction; a first touch routing wiring connected to the first touch electrode line in the display area and disposed between the plurality of first touch sensing electrodes along the second direction; and a second touch routing wiring connected to the second touch electrode line in the non-display area.

[0195] According to another feature of this disclosure, the display device may further include a connection wiring configured to connect two adjacent first touch sensing electrodes among a plurality of first touch sensing electrodes below the first touch electrode line.

[0196] According to another feature of this disclosure, the display device may further include a grounding wiring disposed in the display area between the first touch routing wiring and a plurality of first touch sensing electrodes.

[0197] According to another feature of this disclosure, the substrate may include: a data driving circuit disposed on one surface of the substrate; and pads disposed on the left and right sides of the data driving circuit and connected to a first touch routing wiring and a second touch routing wiring, wherein one end of a ground wiring may be connected to the pad disposed on the left side of the pads, and the other end of the ground wiring may be connected to the pad disposed on the right side of the pads.

[0198] According to embodiments of this disclosure, the touch electrode lines and touch routing wiring are disposed in the same layer in the display area of ​​the display panel, thereby reducing the size of the non-display area.

[0199] According to embodiments of this disclosure, a grounding wire is additionally disposed between the touch sensing electrode and the touch routing wire disposed in the display area. Static electricity can be quickly discharged through the grounding wire, so that it is not affected by static electricity during touch sensing, thereby preventing touch sensing errors or degradation of sensing sensitivity.

[0200] It will be apparent to those skilled in the art that various substitutions, modifications, and variations can be made within the scope of this disclosure without departing from its spirit and scope. Therefore, the scope of this disclosure is defined by the appended claims, and all changes or modifications derived from the meaning, scope, and equivalents of the claims should be interpreted as being included within the scope of this disclosure.

[0201] Cross-references to related applications

[0202] This application claims priority to Korean Patent Application No. 10-2022-0060824, filed in Korea on May 18, 2022, the entire contents of which are hereby expressly incorporated by reference.

Claims

1. A display device, the display device comprising: A substrate, the substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; An encapsulation layer is used to cover the plurality of sub-pixels; A first touch electrode line, the first touch electrode line including a plurality of first touch sensing electrodes, the plurality of first touch sensing electrodes being disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; The second touch electrode line is disposed in the same plane as the first touch electrode line and is disposed along a second direction that intersects the first direction; Multiple pads are disposed on one side of the substrate; The first touch routing is configured to connect some of the first touch electrode lines and some of the plurality of pads, and is disposed between the plurality of first touch sensing electrodes along the second direction. The second touch routing is configured to connect the second touch electrode line to some of the other pads among the plurality of pads; as well as A grounding wiring is provided in the display area between the first touch routing wiring disposed between the plurality of first touch sensing electrodes along the second direction and the plurality of first touch sensing electrodes.

2. The display device according to claim 1, the display device further comprising connection wiring configured to connect the first touch sensing electrodes that are adjacent to each other along the first direction among the plurality of first touch sensing electrodes.

3. The display device according to claim 2, wherein, The connection wiring is disposed on a different layer from the first touch electrode line and the second touch electrode line.

4. The display device according to claim 1, wherein, The first touch electrode line and the second touch electrode line have a rectangular shape, a rhombus shape or a triangular shape.

5. The display device according to claim 4, wherein, The edges of each of the first and second touch electrode lines have a serrated shape.

6. The display device according to claim 1, wherein, A portion of the first touch routing wiring is located in the display area.

7. The display device according to claim 6, wherein, The first touch routing wiring is disposed on the same layer as the first touch electrode line.

8. The display device according to claim 6, wherein, The second touch routing wiring is disposed in the non-display area and is a double wiring with two overlapping electrodes, wherein the two electrodes are disposed at different layers in the thickness direction of the substrate.

9. The display device of claim 8, further comprising connection wiring configured to connect the plurality of first touch sensing electrodes that are adjacent to each other in the first direction to each other. in, One of the two electrodes, located at the lower part, is disposed in the same layer as the connecting wiring and is formed of the same material as the connecting wiring.

10. The display device according to claim 1, wherein, The substrate includes: The first area is provided with the first touch electrode line and the second touch electrode line; The second zone, which protrudes from the first zone; and A bending region is disposed between the first region and the second region and is configured to bend the second region to the rear surface of the first region.

11. The display device according to claim 10, wherein, The plurality of sub-pixels includes a pixel circuit containing a plurality of thin-film transistors and a light-emitting element. Multiple wirings disposed on the same layer as some of the electrodes constituting the plurality of thin-film transistors are arranged in the bending region, and The first touch electrode line and the second touch electrode line are connected to the plurality of wirings.

12. The display device according to claim 11, wherein, The second region includes a jumper area configured to connect the first touch electrode line and the plurality of wirings in a region adjacent to the curved region, and to connect the second touch electrode line and the plurality of wirings.

13. The display device according to claim 1, wherein, The grounding wiring is disposed on the same layer as the plurality of first touch sensing electrodes and the first touch routing wiring, and is spaced apart from the plurality of first touch sensing electrodes and the first touch routing wiring.

14. The display device according to claim 1, wherein, Another grounding wire is disposed along the periphery of the substrate in the non-display area, and a grounding voltage is applied to the other grounding wire.

15. The display device according to claim 1, wherein, In some of the first and second touch routing routes, a constant resistance structure is provided near the pad area to adjust the resistance of the first and second touch routing routes.

16. A display device, the display device comprising: A substrate, the substrate including a display area having a plurality of sub-pixels and a non-display area other than the display area; A dam is disposed on the substrate near the boundary between the display area and the non-display area; An encapsulation layer is used to cover the plurality of sub-pixels and the dam; A first touch electrode line, the first touch electrode line including a plurality of first touch sensing electrodes, the plurality of first touch sensing electrodes being disposed on the encapsulation layer along a first direction and spaced apart from each other along the first direction; The second touch electrode line is disposed in the same plane as the first touch electrode line and is disposed along a second direction that intersects the first direction; The first touch routing wiring is connected to the first touch electrode line in the display area and is disposed between the plurality of first touch sensing electrodes along the second direction; The second touch routing wiring is connected to the second touch electrode line in the non-display area; as well as A grounding wiring is provided in the display area between the first touch routing wiring disposed between the plurality of first touch sensing electrodes along the second direction and the plurality of first touch sensing electrodes.

17. The display device of claim 16, further comprising a connection wiring configured to connect two adjacent first touch sensing electrodes among the plurality of first touch sensing electrodes below the first touch electrode line.

18. The display device according to claim 16, wherein, The substrate includes: A data driving circuit, wherein the data driving circuit is disposed on one surface of the substrate; and The pads are disposed on the left and right sides of the data driving circuit and connected to the first touch routing wiring and the second touch routing wiring. One end of the grounding wire is connected to the pad located on the left side of the pad, and the other end of the grounding wire is connected to the pad located on the right side of the pad.

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