Touch sensor for display device

Abstract

A touch sensor for a display device is disclosed, the touch sensor comprising: a base layer; a plurality of first sensing electrodes and a plurality of second sensing electrodes, which are separated from each other on the base layer; a first connector, which electrically connects the first sensing electrodes adjacent to each other; a first insulating layer, which is disposed on the first sensing electrodes and the second sensing electrodes; a conductor, which is disposed on the first insulating layer and connected to the second sensing electrodes through the first insulating layer; and a second insulating layer, which is disposed on the first insulating layer to cover the conductor. The first insulating layer comprises a first opening, the first opening exposing at least one of a portion of a first separation region between the first connector and the second sensing electrode, a portion of the first connector, and a portion of the second sensing electrode, and the first opening is separated from the conductor.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0015152, filed on February 7, 2020, which is hereby incorporated by reference for all purposes as if fully set forth herein. Technical Field

[0002] Exemplary embodiments of the invention relate generally to a display device, and more particularly, to a display device having a touch sensor. Background Art

[0003] Recent display devices have been developed to perform an information input function in addition to an image display function. Generally, the information input function of a display device may be implemented as a touch sensor for receiving a user's touch or a touch from a predetermined tool.

[0004] A touch sensor such as an input sensing unit is attached to one surface of a display panel that implements an image display function, or is formed integrally with the display panel to be used. A user can input information by pressing or touching the input sensing unit while viewing an image displayed by the display panel.

[0005] Due to static electricity generated during a manufacturing process or a use process of the input sensing unit, defects such as short circuit or disconnection of an internal circuit may occur, and research for preventing defects due to static electricity is being conducted.

[0006] The above information disclosed in this Background section is only for understanding the background of the inventive concept and therefore it may contain information that does not constitute the prior art. Summary of the invention

[0007] The applicant has discovered that the touch sensor of the display device may be damaged by static electricity during the manufacturing process.

[0008] A touch sensor constructed according to the principles of the invention and some exemplary embodiments and a display device including the touch sensor minimize or prevent the touch sensor from being damaged by static electricity. For example, the touch sensor may include an insulating layer having one or more openings exposing sensing electrodes so that static electricity does not accumulate between the sensing electrodes but can be discharged. Therefore, defects such as short circuits between the sensing electrodes can be minimized or prevented.

[0009] A touch sensor and a display device including the touch sensor constructed according to the principles of the invention and some exemplary embodiments include a depression such as a recess in a connector extending between sensing electrodes to minimize the accumulation of static electricity. Therefore, short circuit defects in the touch sensor caused by the inflow of static electricity can be improved.

[0010] A touch sensor constructed according to the principles of the invention and some exemplary embodiments and a display device including the touch sensor have conductors, such as conductive patterns for connecting sensing electrodes to each other, whose length is short to reduce resistance due to the conductive patterns and / or make the conductive patterns difficult to be recognized or observed by a user.

[0011] Additional features of the inventive concepts will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the inventive concepts.

[0012] According to one aspect of the invention, a touch sensor for a display device includes: a base layer; a plurality of first sensing electrodes and a plurality of second sensing electrodes, which are separated from each other on the base layer; a first connector, which electrically connects the first sensing electrodes adjacent to each other; a first insulating layer, which is disposed on the first sensing electrodes and the second sensing electrodes; a conductor, which is disposed on the first insulating layer and connected to the second sensing electrodes through the first insulating layer; and a second insulating layer, which is disposed on the first insulating layer to cover the conductor, wherein the first insulating layer includes a first opening, the first opening exposes at least one of a portion of a first separation area between the first connector and the second sensing electrode, a portion of the first connector, and a portion of the second sensing electrode, and the first opening is separated from the conductor.

[0013] The first sensing electrodes may be arranged along a first direction, the second sensing electrodes may be arranged along a second direction crossing the first direction, and the first sensing electrodes, the second sensing electrodes, and the first connector are disposed on the same layer.

[0014] The touch sensor may further include: an electrode electrically connecting second sensing electrodes adjacent to each other, wherein the electrode may be disposed on the same layer as the first sensing electrode and surrounded by the first sensing electrode, and the electrode may be spaced apart from the first sensing electrode and the second sensing electrode.

[0015] The first insulating layer may further include a second opening overlapping the second separation region between the electrode and the first connector, and the second opening exposes a portion of the electrode and a portion of the first connector.

[0016] The first insulating layer may further include a third opening overlapping the second separation region, and the third opening exposes another portion of the electrode and a portion of the first sensing electrode.

[0017] The first connector may include a first connection portion, the conductor may include a conductive pattern, and the electrode may include an electrode pattern, and the conductive pattern is connected to the electrode pattern through a contact hole passing through the first insulating layer, and the conductive pattern and the electrode pattern may constitute a second connection portion that electrically connects second sensing electrodes adjacent to each other.

[0018] The conductive pattern may include a first bridge electrode connected to one of the second sensing electrodes adjacent to each other and the electrode pattern; and a second bridge electrode connected to the other of the second sensing electrodes adjacent to each other and the electrode pattern.

[0019] At least one of the first sensing electrode, the second sensing electrode, and the electrode pattern may include a recess extending inward from an edge in a plan view, and the recess may overlap one of the first bridge electrode and the second bridge electrode.

[0020] The first opening may expose a portion of the base layer in the first separation region, and the second insulating layer may contact the base layer through the first opening.

[0021] The second insulating layer may contact a portion of the first connector exposed by the first opening and a portion of the second sensing electrode exposed by the first opening.

[0022] The first insulating layer may further include a fourth opening exposing a first separation region between the first sensing electrode and the second sensing electrode, a portion of the first sensing electrode, and a portion of the second sensing electrode.

[0023] The conductor may electrically connect the second sensing electrodes adjacent to each other through a contact hole penetrating the first insulating layer.

[0024] The first sensing electrode, the second sensing electrode, and the first connector may include a transparent conductive material.

[0025] The conductor may include a conductive pattern having a single-layer or multi-layer structure including molybdenum (Mo).

[0026] According to another aspect of the invention, a touch sensor for a display device includes: a base layer including a sensing area; a sensing electrode layer arranged in the sensing area of ​​the base layer; a first insulating layer arranged on the sensing electrode layer; a conductor arranged on the first insulating layer and connected to a portion of the sensing electrode layer through the first insulating layer; and a second insulating layer arranged on the first insulating layer to cover the conductor, wherein: the sensing electrode layer includes a recess extending inward from an edge in a plan view, and the recess overlaps the conductor.

[0027] The sensing electrode layer may include: a plurality of first sensing electrodes arranged along a first direction; a plurality of second sensing electrodes arranged along a second direction intersecting the first direction and separated from the first sensing electrodes by a first distance; and a first connector electrically connecting the first sensing electrodes adjacent to each other, and wherein: the recess may include a recessed portion disposed adjacent to edges of the first sensing electrode and the second sensing electrode, and the conductor electrically connects the second sensing electrodes adjacent to each other through a contact hole passing through the first insulating layer.

[0028] A second distance between the first sensing electrode and the second sensing electrode adjacent to each other in the region including the concave portion may be greater than the first distance.

[0029] The sensing electrode layer may include a transparent conductive material, and the conductor may include a conductive pattern having a single-layer or multi-layer structure including molybdenum (Mo).

[0030] The depression may have one of a generally polygonal shape and a semicircular shape in plan view.

[0031] According to another aspect of the invention, a display device includes: a display panel including a light-emitting element and an encapsulation layer covering the light-emitting element; and a touch sensor disposed on the display panel, wherein the touch sensor includes: a base layer; a plurality of first sensing electrodes and a plurality of second sensing electrodes, which are separated from each other on the base layer; a first connector, which electrically connects the first sensing electrodes adjacent to each other; a first insulating layer, which is disposed on the first sensing electrodes and the second sensing electrodes; a conductor, which is disposed on the first insulating layer and connected to the second sensing electrodes through the first insulating layer; and a second insulating layer, which is disposed on the first insulating layer to cover the conductor, wherein: the first insulating layer includes a first opening, the first opening exposes a first separation area between the first connector and the second sensing electrode, a portion of the first connector, and a portion of the second sensing electrode, and the first opening is separated from the conductor.

[0032] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept, wherein the accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0034] Figure 1 is a perspective view of an exemplary embodiment of a display device constructed according to the principles of the invention.

[0035] FIG. 2A to FIG. 2C It is schematically shown Figure 1 A cross-sectional view of a display device.

[0036] Figure 3 yes Figure 1 A plan view of a touch sensor of a display device.

[0037] Figure 4A It is shown Figure 3 EXAMPLE EMBODIMENT OF THE TOUCH SENSOR Figure 3 An enlarged view of the enlarged area EA in FIG.

[0038] Figure 4B It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part.

[0039] Figure 5 It is along Figure 4A A cross-sectional view taken along line AA'.

[0040] Figure 6 It is along Figure 4A A cross-sectional view taken along line BB'.

[0041] Figure 7 It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part.

[0042] Figure 8 It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part.

[0043] Fig. 9 yes Figure 8 Magnified image of the CA portion.

[0044] Fig. 10A It is shown Figure 8 Another exemplary embodiment of a touch sensor Figure 8 Magnified image of the CA portion.

[0045] Fig. 10B It is shown Figure 8 Another exemplary embodiment of a touch sensor Figure 8 Magnified image of the CA portion. DETAILED DESCRIPTION

[0046] In the following description, for the purpose of explanation, many specific details are set forth to provide a thorough understanding of various exemplary embodiments or implementations of the invention. As used herein, "embodiment" and "implementation" are interchangeable words as non-limiting examples of devices or methods that employ one or more inventive concepts disclosed herein. However, it is apparent that various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other cases, well-known structures and devices are shown in block diagram form to avoid unnecessary confusion of various exemplary embodiments. In addition, various exemplary embodiments may be different, but need not be exclusive. For example, without departing from the inventive concept, the specific shape, construction, and characteristics of an exemplary embodiment may be used or implemented in another exemplary embodiment.

[0047] Unless otherwise stated, the exemplary embodiments shown will be understood as providing exemplary features of different details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise stated, the features, components, modules, layers, films, panels, regions and / or aspects, etc. (hereinafter, individually or collectively referred to as "elements") of the various embodiments may be further combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0048] The use of cross hatching and / or shading in the drawings is generally provided to clarify the boundaries between adjacent elements. Thus, unless otherwise specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific material, material properties, size, ratio, commonality between the elements shown, and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a sequence different from that described. For example, two processes described in succession may be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals represent the same elements.

[0049] When an element or layer is referred to as being "on", "connected to" or "bonded to" another element or layer, the element or layer may be directly on, directly connected to or directly bonded to the other element or layer, or there may be intermediate elements or layers. However, when an element or layer is referred to as being "directly on", "directly connected to" or "directly bonded to" another element or layer, there are no intermediate elements or layers. For this purpose, the term "connected" may refer to a physical connection, an electrical connection and / or a fluid connection with or without intermediate elements. In addition, the DR1 axis, the DR2 axis and the DR3 axis are not limited to three axes of a rectangular coordinate system, such as the x-axis, the y-axis and the z-axis, but may be interpreted in a broader sense. For example, the DR1 axis, the DR2 axis and the DR3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z (such as XYZ, XYY, YZ, and ZZ for example). As used herein, the term "and / or" includes any and all combinations of one or more of the relevant listed items.

[0050] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, the first element discussed below may be named as the second element without departing from the disclosed teachings.

[0051] Spatially relative terms such as "under," "beneath," "below," "down," "above," "upper," "above," "higher," "side" (e.g., as in "sidewall"), and the like may be used herein for descriptive purposes to describe the relationship of one element to another element as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as "under" or "beneath" other elements or features would subsequently be positioned as "above" the other elements or features. Thus, the exemplary term "under" may encompass both above and below orientations. Additionally, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), and as such, the spatially relative descriptors used herein are interpreted accordingly.

[0052] The terms used herein are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "one (kind / person)" and "the (said)" are also intended to include plural forms. In addition, the terms "include", "comprise" and / or its variations are used in this specification to illustrate the existence of stated features, integral bodies, steps, operations, elements, components and / or their groups, but do not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or their groups. It is also noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms rather than degree terms, and as such, are used to explain the inherent deviations in the measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0053] Various exemplary embodiments are described herein with reference to cross-sectional views and / or exploded views that are schematic diagrams of idealized exemplary embodiments and / or intermediate structures. As such, variations in the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are anticipated. Therefore, the exemplary embodiments disclosed herein should not necessarily be interpreted as being limited to the specific illustrated shapes of the regions, but rather will include deviations in shapes caused by, for example, manufacturing. In this manner, the regions illustrated in the accompanying drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and as such, are not necessarily intended to be limiting.

[0054] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure is a part. Terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0055] Figure 1 is a perspective view of an exemplary embodiment of a display device constructed according to the principles of the invention.

[0056] Reference Figure 1 , the display device DD may display the image IM through the display surface DD-IS. The display surface DD-IS may be substantially parallel to a surface defined by the first direction DR1 and the second direction DR2. The normal direction of the display surface DD-IS, that is, the thickness direction of the display device DD may be indicated by a third direction DR3.

[0057] The front surface (or upper surface) and the rear surface (or lower surface) of each of the components, layers or units described below can be distinguished by the third direction DR3. However, the first direction DR1 to the third direction DR3 are only examples, and the directions indicated by the first direction DR1 to the third direction DR3 can be converted into different directions as a relative concept.

[0058] Figure 1 The display device DD shown in FIG. 1 may have a substantially planar display surface. However, exemplary embodiments are not limited thereto. For example, the display device DD may have various types of display surfaces capable of displaying images, such as a curved display surface or a stereoscopic display surface.

[0059] The display device DD may be a flexible display device. For example, the display device DD may be applied to a foldable display device, a bendable display device, a rollable display device, etc. Exemplary embodiments are not limited thereto, and the display device DD may be a rigid display device.

[0060] like Figure 1 As shown in , the display surface DD-IS of the display device DD may include a display area DD-DA in which an image IM is displayed and a non-display area DD-NDA adjacent to the display area DD-DA. The non-display area DD-NDA may be an area in which no image is displayed. The non-display area DD-NDA may be disposed outside the display area DD-DA.

[0061] FIG. 2A to FIG. 2C It is schematically shown Figure 1 A cross-sectional view of a display device.

[0062] Only show FIG. 2A to FIG. 2C To describe the stacking relationship of the functional panels and / or functional units constituting the display device DD.

[0063] Reference FIG. 2A to FIG. 2C , the display device DD may include a display panel DP, a touch sensor such as input sensing units ISL and ISL-1, and window units WL and WP. The display device DD may further include an anti-reflection unit.

[0064] In an exemplary embodiment, the input sensing units ISL and ISL-1 and the window units WL and WP may be formed in a continuous process. In another exemplary embodiment, the input sensing units ISL and ISL-1 and the window units WL and WP may be combined with each other by an adhesive member. The adhesive member may include a general adhesive or an adhesive. As an example, Figure 2A and Figure 2C The bonding member shown in FIG. 4 may be an optically transparent bonding member OCA.

[0065] In an exemplary embodiment, the display panel DP may include a base layer, a circuit element, a display element, and an encapsulation layer.

[0066] The circuit elements may be disposed on the base layer, and may include signal lines, pixel driving circuits, and the like.

[0067] In an exemplary embodiment, the display element may include a pixel defining film and a light emitting diode. The display element may be disposed on the circuit element and may be electrically connected to the circuit element. The light emitting diode may be an organic light emitting diode or an inorganic light emitting diode. The display element may be a pixel.

[0068] The encapsulation layer may be provided to cover and seal the display element. The encapsulation layer may include at least one organic film and at least one inorganic film. The encapsulation layer may be a base layer of the input sensing units ISL and ISL-1.

[0069] In an exemplary embodiment, the input sensing units ISL and ISL-1 may sense a touch or input to the display surface DD-IS of the display device DD through an external medium such as a hand, a stylus, or a pen.

[0070] exist FIG. 2A to FIG. 2C In FIG. 1 , a structure formed by a continuous process with the input sensing units ISL and ISL-1 and another structure among the window units WL and WP is described as a “layer.” A layer combined with a touch sensor and another structure among the window units is described as a “panel.”

[0071] When there is a base layer therein, the input sensing units ISL and ISL-1 and the window units WL and WP are referred to as an input sensing panel and a window panel WP. When there is no base layer therein, the input sensing units ISL and ISL-1 and the window units WL and WP are referred to as an input sensing layer ISL and a window layer WL.

[0072] like Figure 2A As shown in , the display device DD may include a display panel DP, an input sensing layer ISL, an anti-reflection panel RPP and a window panel WP.

[0073] In an exemplary embodiment, the input sensing layer ISL may be directly disposed on the display panel DP.

[0074] The display module DM may include a display panel DP and an input sensing layer ISL disposed on the display panel DP. An optically transparent adhesive member OCA may be disposed between the display module DM and the anti-reflection panel RPP and between the anti-reflection panel RPP and the window panel WP.

[0075] The input sensing layer ISL may be disposed in or on the display panel DP.

[0076] The display panel DP may be a light emitting display panel, but the exemplary embodiment is not limited thereto. For example, the display panel DP may be an organic light emitting display panel, a quantum dot light emitting display panel, or other known types of display panels.

[0077] The anti-reflection panel RPP reduces the reflectivity of external light incident from the upper side of the window panel WP. In an exemplary embodiment, the anti-reflection panel RPP may include a phase retarder and a polarizer. The phase retarder may be a film type or a liquid crystal coating type, and may include a λ / 2 phase retarder and / or a λ / 4 phase retarder. The polarizer may also be a film type or a liquid crystal coating type.

[0078] In an exemplary embodiment, the anti-reflection panel RPP may include a color filter. The color filter has a predetermined arrangement. The arrangement of the color filter may be determined in consideration of emission colors of pixels included in the display panel DP. The anti-reflection panel RPP may further include a black matrix adjacent to the color filter.

[0079] In an exemplary embodiment, the window panel WP may include a base film WP-BS and a light blocking pattern WP-BZ. The base film WP-BS may include a glass substrate and / or a synthetic resin film, etc. The base film WP-BS is not limited to a single layer. For example, the base film WP-BS may include two or more films combined with each other by an adhesive member.

[0080] The light blocking pattern WP-BZ partially overlaps the base film WP-BS. The light blocking pattern WP-BZ may be disposed on the rear surface of the base film WP-BS to define a frame area of ​​the display device DD, that is, a non-display area DD-NDA (refer to Figure 1 ).

[0081] The window panel WP may further include a functional coating layer disposed on the upper surface of the base film WP-BS. The functional coating layer may include an anti-fingerprint layer, an anti-reflection layer, a hard coating layer, and the like.

[0082] like Figure 2B As shown in , the display device DD may include a display panel DP, an input sensing layer ISL, an anti-reflection layer RPL, and a window layer WL. The bonding member may be omitted from the display device DD, and the input sensing layer ISL, the anti-reflection layer RPL, and the window layer WL may be formed on a substrate surface provided to the display panel DP in a continuous process. The stacking order of the input sensing layer ISL and the anti-reflection layer RPL may be changed.

[0083] like Figure 2C As shown in , the display device DD may not include a separate anti-reflection unit. In an exemplary embodiment, the display device DD may include a display panel DP, an input sensing layer ISL-1, and a window panel WP. Here, the input sensing layer ISL-1 may also have an anti-reflection function.

[0084] exist FIG. 2A to FIG. 2C , the input sensing unit is shown as being completely overlapped with the display panel. However, exemplary embodiments are not limited thereto. For example, the input sensing unit may overlap only a portion of the display area DD-DA, or may overlap only the non-display area DD-NDA. The input sensing unit may be a touch sensing panel that senses the touch of a user, or a fingerprint sensing panel that senses fingerprint information of a user's finger. The pitch of the sensing electrodes and the width of the sensing electrodes described below may vary depending on the specific design or use of the input sensing unit.

[0085] Figure 3 yes Figure 1 A plan view of a touch sensor of a display device.

[0086] Reference Figure 3 The touch sensor TS may include a base layer BL, a sensing electrode layer SE, and a signal line CL. The touch sensor TS may further include a pad (or referred to as a “pad” or “pad”) portion PD connected to the signal line CL.

[0087] The base layer BL may be formed of a transparent insulating material such as glass, quartz, ceramic, plastic, etc. When the base layer BL is formed of plastic, the base layer BL may be formed as a flexible substrate. For example, the base layer BL may be formed of one of polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate (SAC), and cellulose acetate propionate (CAP), but exemplary embodiments are not limited thereto.

[0088] In an exemplary embodiment, the base layer BL may be an inorganic material. FIG. 2A to FIG. 2C The base layer BL corresponds to the uppermost layer of the encapsulation layer of the display panel DP. In this case, the base layer BL may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, an aluminum oxide layer, and the like.

[0089] The base layer BL may include a sensing area SA that recognizes or detects a user's touch and a non-sensing area NSA that does not recognize or detect a user's touch. Figure 3 , the sensing area SA and the non-sensing area NSA are illustrated as quadrangles, but exemplary embodiments are not limited thereto.

[0090] The sensing area SA may overlap with a display area of ​​the display panel that may be disposed on one surface of the base layer BL. For example, the sensing area SA may have the same shape as that of the display area. The non-sensing area NSA may overlap with a non-display area of ​​the display panel.

[0091] The sensing area SA may be provided with a plurality of sensing electrode layers SE, and the non-sensing area NSA may be provided with a pad portion PD and a signal line CL connecting the sensing electrode layer SE to the pad portion PD. The pad portion PD may include a plurality of pads CL_P. Each of the pads CL_P may be electrically connected to the sensing electrode layer SE through a signal line CL.

[0092] The sensing electrode layer SE may include first sensing electrodes SS1 arranged in the first direction DR1. The first sensing electrodes SS1 arranged along the first direction DR1 may be electrically connected to each other. For example, the first sensing electrodes SS1 may be a plurality of first sensing electrode lines extending in the first direction DR1.

[0093] In addition, the sensing electrode layer SE may include second sensing electrodes SS2 arranged in a second direction DR2 crossing the first direction DR1. The second sensing electrodes SS2 may be electrically connected to each other along the second direction DR2. For example, the second sensing electrodes SS2 may be a plurality of second sensing electrode lines extending in the second direction DR2.

[0094] In an exemplary embodiment, the first sensing electrodes SS1 arranged in the first direction DR1 may be integrally formed, or adjacent first sensing electrodes SS1 may be electrically connected to each other through a connector such as a connection pattern. In an exemplary embodiment, the second sensing electrodes SS2 arranged in the second direction DR2 may be integrally formed, or adjacent second sensing electrodes SS2 may be electrically connected to each other through another connector such as a connection pattern.

[0095] A first sensing electrode line (e.g., sensing electrode row) including the first sensing electrode SS1 and a second sensing electrode line (e.g., sensing electrode column) including the second sensing electrode SS2 may be connected to the pad CL_P through a signal line CL, respectively. One of the sensing electrode row and the sensing electrode column may receive a driving signal for touch sensing through the signal line CL, and the other may transmit a touch sensing signal through the signal line CL.

[0096] The pad portion PD may be connected to an external driving circuit such as a position detection circuit. The sensing electrode layer SE and the external driving circuit may be electrically connected to each other.

[0097] Figure 4A It is shown Figure 3 EXAMPLE EMBODIMENT OF THE TOUCH SENSOR Figure 3 An enlarged view of the enlarged area EA in FIG. Figure 4B It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part. Figure 5 It is along Figure 4A A cross-sectional view taken along line AA'. Figure 6 It is along Figure 4A A cross-sectional view taken along line BB'. Figure 7 It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part.

[0098] Reference Figures 3 to 7 , the touch sensor TS may include a base layer BL, a sensing electrode layer SE, a first insulating layer INS1 , a conductor in the form of a conductive pattern MTP, and a second insulating layer INS2 .

[0099] like Figures 3 to 6 As shown in , the sensing electrode layer SE may be disposed on the base layer BL. The sensing electrode layer SE may include a first sensing electrode SS1, a second sensing electrode SS2, a first connector in the form of a first connection portion CNE1, and an electrode pattern IEP. The sensing electrode layer SE may be disposed in the sensing area SA.

[0100] In an exemplary embodiment, the first sensing electrodes SS1 adjacent to each other along the first direction DR1 may be connected to each other through the first connection portion CNE1. For ease of description, the first sensing electrode SS1 and the first connection portion CNE1 are divided, but the exemplary embodiment is not limited thereto. For example, the first connection portion CNE1 may be a part of the first sensing electrode SS1, and the first connection portion CNE1 and the first sensing electrode SS1 may be formed integrally.

[0101] The second sensing electrode SS2 may be spaced apart from the first sensing electrode SS1 and the first connection portion CNE1. The second sensing electrodes SS2 adjacent in the second direction DR2 may be connected to each other through a second connector in the form of a second connection portion CNE2.

[0102] The second connection portion CNE2 may include an electrode pattern IEP and a conductive pattern MTP. Figure 6 , the electrode pattern IEP and the conductive pattern MTP may be disposed on different layers and may be connected through a contact hole CNT passing through the first insulating layer INS1. First, the electrode pattern IEP will be described in detail, and the conductive pattern MTP will be described later.

[0103] Reference Figure 4A and Figure 4B , the electrode pattern IEP may be surrounded by the first sensing electrode SS1 and may be separated from the first sensing electrode SS1 and the second sensing electrode SS2. The electrode pattern IEP may be positioned between adjacent second sensing electrodes SS2. For example, the electrode pattern IEP may include two adjacent electrode patterns IEP respectively surrounded by adjacent first sensing electrodes SS1. The two adjacent electrode patterns IEP may be separated from each other in the first direction DR1. The electrode pattern IEP may be disposed on the same layer as the first sensing electrode SS1 and the second sensing electrode SS2.

[0104] When the electrode pattern IEP is formed between the adjacent second sensing electrodes SS2, since the length of the conductive pattern MTP for connecting the second sensing electrodes SS2 may be short (eg, shorter than Figure 7 Compared with the conductive pattern MTP of the conductive pattern MTP, the resistance caused by the conductive pattern MTP can be reduced. In addition, even if the conductive pattern MTP includes an opaque material, since the length of the conductive pattern MTP is short, the conductive pattern MTP may not be recognized or observed by the user.

[0105] The second connection portion CNE2 is not limited to the above. Figure 7 As shown in FIG. 2 , the second connection portion CNE2_1 of the touch sensor TS_1 may be formed only of the conductive pattern MTP. In this case, the electrode pattern IEP may be omitted, and the conductive pattern MTP may directly connect the second sensing electrodes SS2 adjacent to each other.

[0106] like Figures 3 to 6 As shown in , in an exemplary embodiment, a plurality of second connection portions CNE2 may connect two adjacent second sensing electrodes SS2 to each other. Figure 4A In the embodiment, two second connection portions CNE2 connect two sensing electrodes SS2 adjacent to each other. However, the exemplary embodiment is not limited thereto, and four or more second connection portions CNE2 may be formed. Figure 4A In the embodiment, the second connection portion CNE2 does not overlap the first connection portion CNE1, but exemplary embodiments are not limited thereto. For example, a portion of the second connection portion CNE2 may overlap a portion of the first connection portion CNE1.

[0107] The sensing electrode layer SE may be formed by patterning the first conductive layer coated on the base layer BL using a mask or the like.

[0108] The conductive material included in the first sensing electrode SS1, the second sensing electrode SS2, the first connection portion CNE1, and the electrode pattern IEP may be a transparent conductive material. In an exemplary embodiment, the first sensing electrode SS1, the second sensing electrode SS2, the first connection portion CNE1, and the electrode pattern IEP may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO). In addition, the transparent conductive material may include a conductive polymer such as PEDOT, a metal nanowire, graphene, etc.

[0109] The first insulating layer INS1 may be disposed on the sensing electrode layer SE. The first insulating layer INS1 may include at least one of an organic insulating layer including an organic material and an inorganic insulating layer including an inorganic material. For example, the first insulating layer INS1 may include at least one of silicon oxide, silicon nitride, and silicon oxynitride. The first insulating layer INS1 may have a single-layer or multi-layer structure. The first insulating layer INS1 may be disposed between the sensing electrode layer SE and the conductive pattern MTP to prevent a short circuit between the first sensing electrode SS1 and the second sensing electrode SS2 caused by the conductive pattern MTP.

[0110] The first insulating layer INS1 may include an opening OP partially exposing the sensing electrode layer SE. The opening OP may be formed in various regions of the first insulating layer INS1. The first insulating layer INS1 may include a plurality of openings OP. The opening OP may overlap at least a portion of the sensing electrode layer SE and may be separated from the conductive pattern MTP without overlapping. In an exemplary embodiment, the opening OP may include at least one of a first opening OP-1, a second opening OP-2, and a third opening OP-3.

[0111] The first opening OP-1 may be formed to overlap the first separation area SA1 between the first connection portion CNE1 and the second sensing electrode SS2. For example, the first opening OP-1 may expose a portion of the base layer BL in the first separation area SA1.

[0112] In an exemplary embodiment, the first separation area SA1 may be an area for separating the first sensing electrode SS1 and the second sensing electrode SS2 from each other to form a capacitance between the first sensing electrode SS1 and the second sensing electrode SS2. For example, the first connection portion CNE1 and the first sensing electrode SS1 may be separated from the second sensing electrode SS2 by the first separation area SA1.

[0113] Specifically, Figure 5 As shown in , the width WOP of the first opening OP-1 may be wider than the width WSA of the first separation area SA1. For example, the first opening OP-1 may extend in the second direction DR2. When viewed in a plane, the first opening OP-1 may be disposed between the first bridging electrodes BMT1 adjacent to each other along the first direction DR1. In an exemplary embodiment, the first opening OP-1 may expose a portion of the first connection portion CNE1 adjacent to the first separation area SA1 and a portion of the second sensing electrode SS2 adjacent to the first separation area SA1. However, the first opening OP-1 is not limited to the above. In another exemplary embodiment, the first opening OP-1 may expose only a portion of the first connection portion CNE1 and one of a portion of the second sensing electrode SS2, or may not expose the first connection portion CNE1 and the second sensing electrode SS2.

[0114] The second opening OP-2 may be formed to overlap with the second separation area SA2 between the first connection portion CNE1 and the electrode pattern IEP. For example, the second opening OP-2 may extend in the first direction DR1. When viewed in a plane, the second opening OP-2 may be disposed between the first bridging electrode BMT1 and the second bridging electrode BMT2 adjacent to each other in the second direction DR2. For example, the second opening OP-2 may expose a portion of the base layer BL in the second separation area SA2. Here, the second separation area SA2 may be an area surrounding the electrode pattern IEP. The electrode pattern IEP and the first connection portion CNE1 may be separated from each other by the second separation area SA2.

[0115] In an exemplary embodiment, the second opening OP-2 may expose a portion of the first connection portion CNE1 adjacent to the second separation area SA2 and a portion of the electrode pattern IEP adjacent to the second separation area SA2. However, the second opening OP-2 is not limited to the above. In another exemplary embodiment, the second opening OP-2 may expose only one of a portion of the first connection portion CNE1 and a portion of the electrode pattern IEP, or may not expose the first connection portion CNE1 and the electrode pattern IEP.

[0116] The third opening OP-3 may be formed to overlap with the second separation area SA2 between the first sensing electrode SS1 and the electrode pattern IEP. For example, the third opening OP-3 may extend in the first direction DR1. As described above, the second separation area SA2 may be an area surrounding the electrode pattern IEP, and in the second separation area SA2, the third opening OP-3 may expose a portion of the base layer BL. At this time, the second opening OP-2 and the third opening OP-3 may not overlap with each other. The electrode pattern IEP and the first sensing electrode SS1 may be separated from each other by the second separation area SA2.

[0117] In an exemplary embodiment, the third opening OP-3 may expose a portion of the first sensing electrode SS1 adjacent to the second separation area SA2 and a portion of the electrode pattern IEP adjacent to the second separation area SA2. However, the third opening OP-3 is not limited to the above. In another exemplary embodiment, the third opening OP-3 may expose only one of a portion of the first sensing electrode SS1 and a portion of the electrode pattern IEP, or may not expose the first sensing electrode SS1 and the electrode pattern IEP.

[0118] The position of the opening OP is not limited to the above, and the opening OP may be formed at more different positions. Figure 4B As shown in , the opening OP' of the touch sensor TS' may further include a fourth opening OP-4. The fourth opening OP-4 may be formed to overlap with the first separation area SA1 between the first sensing electrode SS1 and the second sensing electrode SS2. For example, the fourth opening OP-4 may extend in a direction different from the first direction DR1 and the second direction DR2. In the first separation area SA1, the fourth opening OP-4 may expose a portion of the base layer BL. The first sensing electrode SS1 and the second sensing electrode SS2 may be separated from each other by the first separation area SA1.

[0119] In an exemplary embodiment, the fourth opening OP-4 may expose a portion of the first sensing electrode SS1 adjacent to the first separation area SA1 and a portion of the second sensing electrode SS2 adjacent to the first separation area SA1. However, the fourth opening OP-4 is not limited to the above. In another exemplary embodiment, the fourth opening OP-4 may expose only one of a portion of the first sensing electrode SS1 and a portion of the second sensing electrode SS2, or may not expose the first sensing electrode SS1 and the second sensing electrode SS2.

[0120] Reference Figure 6 , a contact hole CNT for connection between the second sensing electrode SS2 and the conductive pattern MTP and between the electrode pattern IEP and the conductive pattern MTP may be formed in the first insulating layer INS1. Portions of each of the second sensing electrode SS2 and the electrode pattern IEP may be exposed by the contact hole CNT. The contact hole CNT and the opening OP may be formed in different portions. In an exemplary embodiment, after depositing the first insulating layer INS1, a portion of the first insulating layer INS1 corresponding to the contact hole CNT may be etched, and thus a portion of the second sensing electrode SS2 may be exposed.

[0121] The conductive pattern MTP may be disposed on the first insulating layer INS1. For example, the conductive pattern MTP may be disposed on a different layer from the sensing electrode layer SE. Specifically, the conductive pattern MTP may be disposed on a different layer from the first connection portion CNE1, the first sensing electrode SS1, the second sensing electrode SS2, and the electrode pattern IEP. In an exemplary embodiment, the conductive pattern MTP may be disposed on the first insulating layer INS1 to overlap with the first sensing electrode SS1, the second sensing electrode SS2, and the electrode pattern IEP.

[0122] The conductive pattern MTP may include a first bridge electrode BMT1 and a second bridge electrode BMT2. The first bridge electrode BMT1 may connect one of the adjacent second sensing electrodes SS2 and the electrode pattern IEP, and the second bridge electrode BMT2 may connect the other of the adjacent second sensing electrodes SS2 and the electrode pattern IEP. Figure 6 As shown in FIG, the first bridge electrode BMT1 of the conductive pattern MTP may contact the electrode pattern IEP through a contact hole CNT passing through the first insulating layer INS1 and may contact the second sensing electrode SS2 through another contact hole CNT passing through the first insulating layer INS1.

[0123] In an exemplary embodiment, the conductive pattern MTP may include an opaque metal. The conductive pattern MTP may be a single-layer or multi-layer structure including molybdenum (Mo). For example, the conductive pattern MTP may be a three-layer structure of molybdenum (Mo) / aluminum (Al) / molybdenum (Mo). However, the material of the conductive pattern MTP is not limited to the above.

[0124] The conductive pattern MTP may be formed by patterning the second conductive layer deposited on the first insulating layer INS1 using a mask, etc. The contact hole CNT may be filled with a material included in the conductive pattern MTP.

[0125] The second insulating layer INS2 may be disposed on the first insulating layer INS1 to cover the conductive pattern MTP. The second insulating layer INS2 may prevent the conductive pattern MTP from being exposed to the outside. Therefore, corrosion and contamination of the conductive pattern MTP may be minimized or prevented. The second insulating layer INS2 may include at least one of an organic insulating layer and an inorganic insulating layer.

[0126] In an exemplary embodiment, the second insulating layer INS2 may include the same material as the first insulating layer INS1. Even if the first insulating layer INS1 and the second insulating layer INS2 include the same material, since the first insulating layer INS1 and the second insulating layer INS2 are formed in different manufacturing processes, an interface may be formed between the first insulating layer INS1 and the second insulating layer INS2. However, the material of the second insulating layer INS2 is not limited to the above. In another exemplary embodiment, the second insulating layer INS2 may include an insulating material different from the insulating material of the first insulating layer INS1.

[0127] The second insulating layer INS2 may cover the region exposed by the opening OP of the first insulating layer INS1. Figure 5 As shown in FIG. 1 , the second insulating layer INS2 may cover a portion of the base layer BL exposed by the first opening OP- 1. Therefore, the second insulating layer INS2 may contact the base layer BL in the first separation area SA1 between the first connection portion CNE1 and the second sensing electrode SS2.

[0128] In addition, the second insulating layer INS2 may cover a portion of the sensing electrode layer SE exposed by the first opening OP-1. For example, the second insulating layer INS2 may cover a portion of the first connection portion CNE1 exposed by the first opening OP-1 and a portion of the second sensing electrode SS2 exposed by the first opening OP-1, and may contact the portion of the first connection portion CNE1 and the portion of the second sensing electrode SS2.

[0129] In addition, refer to Figure 2A, the window panel WP (or window unit) may be disposed on the touch sensor TS (or input sensing layer ISL). The conductive pattern MTP may be disposed between the sensing electrode layer SE and the window panel WP. For example, the conductive pattern MTP may be disposed closer to the window panel WP than the sensing electrode layer SE.

[0130] In the manufacturing process of the touch sensor TS, static electricity may be generated by an external factor (eg, a photolithography process), and the static electricity may flow into the sensing area SA of the touch sensor TS from the outside.

[0131] For example, when static electricity flows into the touch sensor TS from the outside after forming the sensing electrode layer SE and the first insulating layer INS1 and before forming the conductive pattern MTP, the static electricity may be accumulated in the capacitor formed by the sensing electrode layers SE adjacent to each other (for example, the first connection portion CNE1 and the second sensing electrode SS2 adjacent to each other) and the first insulating layer INS1 disposed between the sensing electrode layers SE adjacent to each other. When static electricity is accumulated, the voltage in the capacitor may become high, and the first insulating layer INS1 may be deformed and damaged due to heat caused by the high voltage. When the first insulating layer INS1 is damaged, various defects such as a defect in which the second sensing electrode SS2 is short-circuited may occur in the post-manufacturing process.

[0132] Therefore, the touch sensor TS according to some exemplary embodiments includes an opening OP for minimizing or preventing static electricity from accumulating to a high voltage level. Therefore, a short circuit defect of the touch sensor TS in a manufacturing process due to the inflow of static electricity can be minimized or prevented.

[0133] For example, Figure 5 As shown in , the first separation area SA1 between the first connection part CNE1 and the second sensing electrode SS2, the portion of the first connection part CNE1 adjacent to the first separation area SA1, and the portion of the second sensing electrode SS2 adjacent to the first separation area SA1 are exposed to the air layer by the first opening OP-1. In addition, since the air layer having a lower dielectric constant than the dielectric constant of the first insulating layer INS1 is positioned between the first connection part CNE1 and the second sensing electrode SS2 during the manufacturing process, the capacitance of the capacitor formed between the first connection part CNE1 and the second sensing electrode SS2 can be minimized or reduced. Therefore, the first connection part CNE1 and the second sensing electrode SS2 can have substantially the same potential. Therefore, when static electricity flows from the outside, static electricity may not be accumulated in the capacitor between the first connection part CNE1 and the second sensing electrode SS2, and the introduced static electricity can be easily discharged through another path. Therefore, the touch sensor TS can have a robust characteristic to minimize the accumulation of static electricity during the manufacturing process, thereby protecting the touch sensor TS from the influence of static electricity during the manufacturing process.

[0134] Hereinafter, another exemplary embodiment of a touch sensor will be described. In the following exemplary embodiments, descriptions of the same components as those of the previously described illustrated exemplary embodiments will be denoted by the same reference numerals, will be omitted or simplified to avoid redundancy, and differences will be mainly described.

[0135] Figure 8 It is shown Figure 3 Another exemplary embodiment of a touch sensor Figure 3 Magnified view of the EA part. Fig. 9 yes Figure 8 Magnified view of the CA section. Fig. 10A It is shown Figure 8 Another exemplary embodiment of a touch sensor Figure 8 Magnified image of the CA portion. Fig. 10B It is shown Figure 8 Another exemplary embodiment of a touch sensor Figure 8 Magnified image of the CA portion.

[0136] and Figures 3 to 6 Compared with the above exemplary embodiments, Figures 8 to 10B The exemplary embodiment of FIG. 1 is different in that the touch sensor TS_2 further includes a concave portion CP, and the other configurations are substantially the same.

[0137] Reference Figure 4A and Figures 8 to 10B , the touch sensor TS_2 may include a sensing electrode layer SE_2 and a conductive pattern MTP disposed on the sensing electrode layer SE_2. The sensing electrode layer SE_2 may include a first sensing electrode SS1_2, a second sensing electrode SS2_2, and a first connection portion CNE1 connecting the first sensing electrodes SS1_2 adjacent to each other. The sensing electrode layer SE_2 may include an electrode pattern IEP_2, which is surrounded by the first sensing electrode SS1_2 and is separated from the first sensing electrode SS1_2 and the second sensing electrode SS2_2.

[0138] In an exemplary embodiment, the sensing electrode layer SE_2 may include at least one recess in the form of a recess CP. A plurality of recesses CP may be formed in respective regions of the sensing electrode layer SE_2. The recess CP may be formed in a region overlapping with the conductive pattern MTP. Specifically, the recess CP may include at least one of a first recess CP-1, a second recess CP-2, a third recess CP-3, and a fourth recess CP-4.

[0139] The first recess CP-1 may be positioned between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 that are adjacent to each other. The first recess CP-1 may be formed adjacent to the edge of the first sensing electrode SS1_2. The first recess CP-1 may be formed in a shape that is recessed from the edge of the first sensing electrode SS1_2 to the inside of the first sensing electrode SS1_2 in a plan view. For example, the first recess CP-1 may be formed at the edge of the first sensing electrode SS1_2 and recessed toward the electrode pattern IEP_2 surrounded by the first sensing electrode SS1_2. The first recess CP-1 may be a region from which at least a portion of the edge of the first sensing electrode SS1_2 is removed.

[0140] At least a portion of the first concave portion CP- 1 may overlap the conductive pattern MTP. For example, the first concave portion CP- 1 may overlap the first bridge electrode BMT1 of the conductive pattern MTP.

[0141] Similar to the first recess CP-1, the second recess CP-2 may be positioned between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 adjacent to each other. The second recess CP-2 may be formed adjacent to the edge of the second sensing electrode SS2_2. The second recess CP-2 may be formed in a shape that is recessed from the edge of the second sensing electrode SS2_2 to the inside of the second sensing electrode SS2_2 in a plan view. The second recess CP-2 may be a region from which at least a portion of the edge of the second sensing electrode SS2_2 is removed.

[0142] At least a portion of the second concave portion CP-2 may overlap the conductive pattern MTP. For example, the second concave portion CP-2 may overlap the first bridge electrode BMT1 of the conductive pattern MTP.

[0143] The third recess CP-3 may be positioned between the first sensing electrode SS1_2 and the electrode pattern IEP_2 adjacent to each other. The third recess CP-3 may be formed adjacent to the edge of the first sensing electrode SS1_2. The third recess CP-3 may be formed in a shape recessed from the edge of the first sensing electrode SS1_2 to the inside of the first sensing electrode SS1_2 in a plan view. The third recess CP-3 may be a region from which at least a portion of the edge of the first sensing electrode SS1_2 is removed.

[0144] At least a portion of the third concave portion CP- 3 may overlap the conductive pattern MTP. For example, the third concave portion CP- 3 may overlap the second bridge pattern BMT2 of the conductive pattern MTP.

[0145] The fourth recess CP-4 may be positioned between the first sensing electrode SS1_2 and the electrode pattern IEP_2 of the sensing electrode layer SE_2 adjacent to each other. The fourth recess CP-4 may be formed adjacent to the edge of the electrode pattern IEP_2. The fourth recess CP-4 may be formed in a shape recessed from the edge of the electrode pattern IEP_2 to the inside of the electrode pattern IEP_2 in a plan view. The fourth recess CP-4 may be a region from which at least a portion of the edge of the electrode pattern IEP_2 is removed.

[0146] At least a portion of the fourth concave portion CP-4 may overlap the conductive pattern MTP. For example, the fourth concave portion CP-4 may overlap the second bridge pattern BMT2 of the conductive pattern MTP.

[0147] As described above, when the sensing electrode layer SE_2 of the touch sensor TS_2 includes the concave portion CP in the region overlapping the conductive pattern MTP, in the manufacturing process of the touch sensor TS_2, the accumulation of static electricity in the capacitor between adjacent electrodes (e.g., the first sensing electrode SS1_2 and the second sensing electrode SS2_2) can be reduced. Therefore, the touch sensor TS_2 can be protected from static electricity in the manufacturing process, so that damage to the sensing electrode layer SE_2 due to static electricity can be minimized.

[0148] Specifically, in order to prevent defects caused by static electricity in the manufacturing process, each of the first sensing electrode SS1_2 and the second sensing electrode SS2_2 may be electrically connected to the antistatic structure through the signal line CL. For example, static electricity flowing into the first sensing electrode SS1_2 may be moved to the antistatic structure through the first connection portion CNE1 and the first sensing electrode SS1_2 and may be discharged, and static electricity flowing into the second sensing electrode SS2_2 may be moved to the antistatic structure through the second connection portion CNE2 and the second sensing electrode SS2_2 and may be discharged.

[0149] Reference Fig. 9 , the static electricity flowing into the second sensing electrode SS2_2 may move to the conductive pattern MTP through the contact hole CNT, may move to another second sensing electrode SS2_2 or the anti-static structure along the conductive pattern MTP, and may be discharged. In the process in which the introduced static electricity moves through the conductive pattern MTP, the static electricity may be accumulated to generate a voltage in the region overlapping with the conductive pattern MTP. For example, the static electricity may be accumulated in the capacitor formed between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 in the region overlapping with the conductive pattern MTP.

[0150] When the first sensing electrode SS1_2 does not include the first concave portion CP-1, the distance between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 is narrowed to the first distance G1. Therefore, the capacitor formed between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 may have a large capacitance. As a result, static electricity may accumulate a voltage to a high level.

[0151] As described above, when static electricity accumulates to a high voltage, the first insulating layer INS1 covering the sensing electrode layer SE_2 may be deformed or damaged due to heat caused by the high voltage. Specifically, static electricity may accumulate to a high voltage at the first point ESD1, which is a cross point between an edge of the first sensing electrode SS1_2 and the conductive pattern MTP. When the first insulating layer INS1 of the first point ESD1 is damaged by static electricity accumulated to a high voltage, a portion of the first sensing electrode SS1_2 may be exposed. Therefore, a defect of a short circuit between the first sensing electrode SS1_2 and the conductive pattern MTP may occur.

[0152] Therefore, if Fig. 9 As shown in , when the touch sensor TS_2 includes the first concave portion CP-1, the area where the static electricity of the first sensing electrode SS1_2 is accumulated may be changed from the first point ESD1 to the second point ESD2. In addition, the distance between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 may be increased from the first distance G1 to the second distance G2. As the distance between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 increases, the capacitance of the capacitor formed between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 may be reduced. Therefore, damage to the first insulating layer INS1 due to the static electricity accumulated between the first sensing electrode SS1_2 and the second sensing electrode SS2_2 may be minimized or prevented.

[0153] exist Figure 8 and Fig. 9 , the shape of the recess CP is generally a quadrilateral shape in a plan view, but the exemplary embodiment is not limited thereto. When the second distance G2 between the sensing electrode layers SE_2 (for example, the first sensing electrode SS1_2 and the second sensing electrode SS2_2) adjacent to each other in the region including the recess CP is greater than the first distance G1 between the sensing electrode layers SE_2 adjacent to each other in the region not including the recess CP, the shape of the recess CP is not limited to a specific shape. For example, Fig. 10A As shown in , the touch sensor TS_2a may include a concave portion CPa having a triangular shape in a plan view. Fig. 10B As shown in FIG. 1 , the touch sensor TS_2 b may include a concave portion CPb having a semicircular shape in a plan view.

[0154] Although certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Therefore, the inventive concept is not limited to such embodiments, but is limited to the broader scope of the appended claims and various obvious modifications and equivalent arrangements that will be apparent to those of ordinary skill in the art.

Claims

1. A touch sensor for a display device, the touch sensor comprising: Base layer; a plurality of first sensing electrodes and a plurality of second sensing electrodes, which are spaced apart from each other on the base layer; a first connector, electrically connecting the plurality of first sensing electrodes adjacent to each other; A first insulating layer is disposed on the plurality of first sensing electrodes and the plurality of second sensing electrodes; a conductor, disposed on the first insulating layer and connected to the plurality of second sensing electrodes through the first insulating layer; as well as a second insulating layer, disposed on the first insulating layer to cover the conductor, wherein the first insulating layer includes a first opening, the first opening exposing at least one of a portion of a first separation region between the first connector and the plurality of second sensing electrodes, a portion of the first connector, and a portion of the plurality of second sensing electrodes, The first opening is spaced apart from the conductor, The first opening exposes a portion of the base layer in the first separation region, and The second insulating layer contacts the base layer through the first opening.

2. The touch sensor according to claim 1, wherein: The plurality of first sensing electrodes are arranged along a first direction, The plurality of second sensing electrodes are arranged along a second direction crossing the first direction, and The plurality of first sensing electrodes, the plurality of second sensing electrodes, and the first connector are disposed on a same layer.

3. The touch sensor according to claim 2, further comprising: electrodes, electrically connecting the plurality of second sensing electrodes adjacent to each other, The electrode is disposed on the same layer as the plurality of first sensing electrodes and is surrounded by a corresponding first sensing electrode among the plurality of first sensing electrodes, and The electrode is spaced apart from the plurality of first sensing electrodes and the plurality of second sensing electrodes.

4. The touch sensor according to claim 3, wherein: The first insulating layer further includes a second opening overlapping a second separation region between the electrode and the first connector, and The second opening exposes a portion of the electrode and a portion of the first connector.

5. The touch sensor according to claim 4, wherein: The first insulating layer further includes a third opening overlapping the second separation region, and The third opening exposes another portion of the electrode and portions of the plurality of first sensing electrodes.

6. The touch sensor according to claim 3, wherein: The first connector includes a first connection portion, the conductor includes a conductive pattern, and the electrode includes an electrode pattern, and the conductive pattern is connected to the electrode pattern through a contact hole passing through the first insulating layer, and The conductive pattern and the electrode pattern constitute a second connection portion that electrically connects the plurality of second sensing electrodes adjacent to each other.

7. The touch sensor according to claim 6, wherein: The conductive pattern comprises: a first bridging electrode connected to one of the plurality of second sensing electrodes adjacent to each other and the electrode pattern; and A second bridge electrode connected to another one of the plurality of second sensing electrodes adjacent to each other and the electrode pattern.

8. The touch sensor according to claim 7, wherein: At least one of the plurality of first sensing electrodes, the plurality of second sensing electrodes, and the electrode pattern includes a recess extending inward from an edge in a plan view, and The recess overlaps one of the first bridge electrode and the second bridge electrode.

9. The touch sensor according to claim 1, wherein: The second insulating layer contacts the portion of the first connector exposed by the first opening and the portions of the plurality of second sensing electrodes exposed by the first opening.

10. The touch sensor according to claim 1, wherein: The first insulating layer further includes a fourth opening that exposes the first separation region between the plurality of first sensing electrodes and the plurality of second sensing electrodes, portions of the plurality of first sensing electrodes, and portions of the plurality of second sensing electrodes, and The conductor electrically connects the plurality of second sensing electrodes adjacent to each other through a contact hole penetrating through the first insulating layer.

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