Display device

Abstract

The present application relates to a display device. The display device includes a display panel having a display area and a non-display area at least partially disposed around the display area, and a touch sensor disposed on the display panel and including a touch sensor area and a touch pad area adjacent to the touch sensor area, wherein the touch sensor includes a plurality of touch electrodes disposed in the touch sensor area, a plurality of touch pads disposed in the touch pad area, and a plurality of touch signal lines respectively electrically connecting the touch electrodes and the touch pads. The touch signal lines include first line portions overlapping the touch pads and extending in a second direction intersecting a first direction, and second line portions angled with respect to the corresponding first line portions, extending in the first direction, and connected to the touch electrodes, and the first line portions of the touch signal lines have a first length in the second direction different from a second length of the first line portions of adjacent touch signal lines in the second direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0126352, filed on October 11, 2019, which is hereby incorporated by reference for all purposes as if fully set forth herein. Technical Field

[0003] Exemplary implementations of the present invention generally relate to a display device, and more particularly, to a display device having a touch sensor that minimizes the visibility of a touch line from the exterior of the device. Background Art

[0004] Electronic devices that present images to users, such as smartphones, tablet PCs, digital cameras, laptops, navigation devices, and televisions (TVs), include display devices for displaying images. Such display devices include display panels for generating and displaying images and various input devices.

[0005] Recently, a touch sensing unit that recognizes a touch input has been widely used as an input device of a display device of a smartphone or tablet PC. The touch sensing unit determines whether a user's touch input is received, and if so, finds the coordinates of the location of the touch input.

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

[0007] Applicants have found that when a display device displays an image, the touch lines of the touch sensing unit may be visible to a user of the display device during operation.

[0008] A display device including a touch sensor constructed according to the principles and exemplary implementations of the present invention can minimize external visibility of touch lines provided in the touch sensor, thereby improving image quality of the display device.

[0009] Additional features of the present inventive concept 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 present inventive concept.

[0010] According to one aspect of the present invention, a display device includes: a display panel having a display area and a non-display area at least partially disposed around the display area; and a touch sensor disposed on the display panel and including a touch sensor area and a touch pad area adjacent to the touch sensor area, wherein the touch sensor includes a plurality of touch electrodes disposed in the touch sensor area, a plurality of touch pads disposed in the touch pad area in a first direction, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads, respectively. The touch signal lines include a first line portion and a second line portion, the first line portion overlapping the touch pads and extending in a second direction intersecting the first direction, the second line portion being angled relative to a corresponding first line portion of the first line portions, extending in the first direction, and connected to the touch electrodes. The first line portion of the touch signal line has a first length in the second direction, the first length being different from the second length of the first line portion of an adjacent touch signal line in the second direction.

[0011] The length of the first line portion in the second direction may gradually increase toward a side edge of the touch pad area along the first direction.

[0012] Widths of adjacent ones of the first line portions in the first direction may be substantially equal to each other.

[0013] The touch sensor may include at least one dummy electrode disposed between adjacent ones of the touch signal lines.

[0014] The dummy electrode may be disposed between adjacent ones of the first line portions.

[0015] A first distance between adjacent ones of the first line portions may be greater than a second distance between adjacent ones of the second line portions.

[0016] The dummy electrode may be provided in plural, and the plurality of dummy electrodes may be arranged along a direction in which the first line portion may extend.

[0017] The number of dummy electrodes in the array of dummy electrodes may gradually increase along the first direction toward a side edge of the touch pad area.

[0018] Dummy electrodes located at edges thereof among the plurality of dummy electrodes may be aligned with adjacent second line portions among the second line portions along the first direction.

[0019] Each of the first line portions may include a plurality of openings arranged along a direction in which the first line portion extends, and openings at edges thereof may be aligned with adjacent ones of the second line portions along the first direction.

[0020] The first line portion may include a first auxiliary line portion and a second auxiliary line portion adjacent to the first auxiliary line portion in the second direction, the first auxiliary line portion may protrude from the second auxiliary line portion in the first direction, and the first auxiliary line portion may be aligned with the adjacent second line portion in the first direction.

[0021] The first line portion may be physically separated from the second line portion, and the touch sensor may further include a connection electrode electrically connecting the touch pad with the second line portion.

[0022] The connection electrode may be provided in the same layer as the touch pad.

[0023] The touch sensor may further include a dummy metal line aligned with the second line portion along the first direction and electrically separated from the second line portion.

[0024] The connection electrode may be physically connected to the touch pad.

[0025] The display device may further include a first insulating layer disposed between the first line portion and the touch pad, the touch pad may be electrically connected to the first line portion through a contact hole formed in the first insulating layer, each of the first line portions may include a metal opening formed in each of the first line portions, and the touch pad may overlap with the metal opening.

[0026] The touch signal line may include a first line portion having a serpentine shape, overlapping the touch pad, and a second line portion angled relative to the corresponding first line portion, extending in a first direction and connected to the touch electrode, and the length of the first line portion in the second direction gradually increases along the first direction toward the side edge of the touch pad area.

[0027] According to another aspect of the present invention, a display device includes: a display panel having a display area and a non-display area at least partially arranged around the display area; and a touch sensor, arranged on the display panel and including a touch sensor area and a touch pad area adjacent to the touch sensor area, wherein the touch sensor includes a plurality of touch electrodes arranged in the touch sensor area, a plurality of touch pads arranged in the touch pad area in a first direction, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads, respectively, and wherein the touch sensor includes a dummy electrode in the form of a continuous plate, the dummy electrode having a dummy opening arranged between adjacent touch signal lines among the touch signal lines, and the dummy opening can penetrate the dummy electrode from the surface of the dummy electrode in the thickness direction.

[0028] The touch signal line may include a first line portion overlapping the touch pad and extending in a second direction intersecting the first direction, and a second line portion inclined with respect to the first line portion, extending along the first direction, and connected to the touch electrode.

[0029] The dummy electrode may be provided between adjacent ones of the first line portions, the dummy opening may be formed in plural, and the dummy opening may be arranged along a direction in which the first line portion extends.

[0030] According to another aspect of the present invention, a display device includes: a display panel having a display area and a non-display area at least partially arranged around the display area; and a touch sensor, arranged on the display panel and including a touch sensor area and a touch pad area adjacent to the touch sensor area, wherein the touch sensor includes a plurality of touch electrodes arranged in the touch sensor area, a plurality of touch pads arranged in the touch pad area, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads, respectively, wherein the touch signal lines include a plurality of first touch signal lines, wherein the first touch signal lines include a first line portion and a second line portion, the first line portion being connected to the touch pads, the second line portion being angled relative to a corresponding first line portion of the first line portions, extending in a first direction and connected to the touch electrodes, wherein the first line portion includes a first auxiliary line portion overlapping with the touch pads and a second auxiliary line portion arranged between the first auxiliary line portion and the second line portion, and wherein adjacent first auxiliary line portions of the first auxiliary line portions of the first touch signal lines have the same length in a second direction intersecting with the first direction.

[0031] Widths of adjacent ones of the second auxiliary line portions of the first touch signal line may be substantially equal to each other.

[0032] Widths of adjacent second auxiliary line portions of the first touch signal line may be different from each other, and widths of the second auxiliary line portions of the first touch signal line may gradually increase along the second direction.

[0033] The second auxiliary line portion may have a stepped shape.

[0034] The multiple touch signal lines may include a second touch signal line, the second touch signal line may include a third line portion and a fourth line portion, wherein the third line portion is connected to the touch pad, the fourth line portion is angled relative to the third line portion, extends in the first direction and is connected to the touch electrode, and the touch sensor may also include a plurality of dummy patterns, and the plurality of dummy patterns may have a shape substantially the same as that of the second auxiliary line portion.

[0035] 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

[0036] The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept.

[0037] Figure 1 is a perspective view of an exemplary embodiment of a display device constructed according to the principles of the present invention.

[0038] Figure 2 is a plan view of an exemplary embodiment of a display device constructed according to the principles of the present invention.

[0039] Figure 3 It is along Figure 2 A cross-sectional view taken along line II'.

[0040] Figure 4 yes Figure 3 Detailed plan view of an exemplary embodiment of a display unit (display panel).

[0041] Figure 5 yes Figure 3 Detailed plan view of an exemplary embodiment of a touch sensing unit (touch sensor).

[0042] Figure 6 yes Figure 5 An enlarged plan view of an exemplary embodiment of area A of FIG.

[0043] Figure 7 It is along Figure 6 A cross-sectional view taken along line II-II'.

[0044] Figure 8 yes Figure 5 FIG. 1 is an enlarged plan view of a first exemplary embodiment of a region B of FIG.

[0045] Figure 9 It is along Figure 8 A sectional view taken along line IX-IX'.

[0046] Figure 10 It is along Figure 8 A cross-sectional view taken along line XX'.

[0047] Figure 11 It is along Figure 8 A sectional view taken along line XI-XI'.

[0048] Figure 12 yes Figure 5 FIG. 1 is an enlarged plan view of a second exemplary embodiment of an area B of FIG.

[0049] Figure 13 It is along Figure 12A sectional view taken along line XIII-XIII'.

[0050] Figure 14 yes Figure 5 An enlarged plan view of a third exemplary embodiment of area B of FIG.

[0051] Figure 15 yes Figure 5 An enlarged plan view of a fourth exemplary embodiment of region B of FIG.

[0052] Figure 16 yes Figure 5 An enlarged plan view of a fifth exemplary embodiment of area B of FIG.

[0053] Figure 17 yes Figure 5 An enlarged plan view of a sixth exemplary embodiment of area B of FIG.

[0054] Figure 18 It is along Figure 17 A sectional view taken along line XVIII-XVIII'.

[0055] Figure 19 yes Figure 5 An enlarged plan view of the seventh exemplary embodiment of area B.

[0056] Figure 20 It is along Figure 19 A sectional view taken along line XX-XX'.

[0057] Figure 21 yes Figure 5 An enlarged plan view of the eighth exemplary embodiment of region B is shown.

[0058] Figure 22 yes Figure 5 An enlarged plan view of a ninth exemplary embodiment of region B of FIG.

[0059] Figure 23 yes Figure 5 An enlarged plan view of a region B of the tenth exemplary embodiment.

[0060] Figure 24 yes Figure 5 An enlarged plan view of an eleventh exemplary embodiment of a region B of FIG. DETAILED DESCRIPTION

[0061] In the following description, for the purpose of illustration, many specific details are set forth to provide a thorough understanding of various exemplary embodiments or implementations of the present invention. As used herein, "embodiment" and "implementation" are interchangeable terms that are non-limiting examples of one or more devices or methods employing the inventive concepts disclosed herein. However, it is apparent that various exemplary embodiments may be put into practice without these specific details or with one or more equivalent arrangements. In other examples, in order to avoid unnecessarily obscuring various exemplary embodiments, known structures and devices are shown in block diagram form. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, configuration, and characteristics of an exemplary embodiment may be used or implemented in another exemplary embodiment.

[0062] Unless otherwise indicated, the exemplary embodiments shown are to be understood as providing exemplary features of different details of some of the ways in which the present invention can be implemented in practice. Therefore, unless otherwise indicated, the features, components, modules, layers, films, panels, regions and / or aspects of the various embodiments (hereinafter individually or collectively referred to as "elements") may be combined, separated, interchanged and / or rearranged without departing from the present invention.

[0063] The use of cross hatching and / or shading in the accompanying drawings is generally to make the boundaries between adjacent elements clear. Thus, unless otherwise specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for a particular material, material properties, size, ratio, commonality between the illustrated elements and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the accompanying drawings, the sizes and relative sizes of the elements may be exaggerated for the purpose of clarity and / or description. When the exemplary embodiments can be implemented differently, the specific processing sequence can be performed differently from the described sequence. For example, two processes described in succession can be performed substantially simultaneously, or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

[0064] When an element or layer is referred to as being "on", "connected to", or "coupled to" another element or layer, it can be directly on, connected, or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element or layer is referred to as being "directly on", "directly connected to", or "directly coupled to" another element or layer, there are no intervening elements or layers present. In this regard, the term "connected" can mean physical, electrical, and / or fluidic connection in the presence or absence of intervening elements. Also, the D1 axis, the D2 axis, and the D3 axis are not limited to three axes of a rectangular coordinate system (such as the X axis, the Y axis, and the Z axis), and can be interpreted in a broader sense. For example, the D1 axis, the D2 axis, and the D3 axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other. For the purpose of the present disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" can be construed as any one of X, Y, Z, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0065] Although the terms "first", "second", etc. can 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. Thus, a first element discussed below could be termed a second element without departing from the teachings of the present disclosure.

[0066] Spatially relative terms such as "beneath", "below", "under", "lower", "above", "upper", "over", "higher", "side" (as in "sidewall") and the like, can be used herein for descriptive purposes, and, thereby, to describe one element's relationship to another element(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientations depicted in the figures. For example, if a device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The devices can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0067] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used in this specification, the terms "comprise", "comprises", "includes" and / or "includes" represent the existence of stated features, integral bodies, steps, operations, elements, parts and / or their sets, but do not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, parts and / or their sets. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms and not as degree terms, and are therefore used to allow for the inherent deviation in measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0068] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. Terms, such as those defined in commonly used 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 defined as such herein.

[0069] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[0070] Figure 1 is a perspective view of an exemplary embodiment of a display device constructed according to the principles of the present invention. Figure 2 is a plan view of an exemplary embodiment of a display device constructed according to the principles of the present invention.

[0071] As used herein, the terms "above," "top," and "upper surface" refer to the side of the display panel 100 on which the touch sensing unit 500 is provided (i.e., the side indicated by the arrow in the Z-axis direction), and the terms "below," "bottom," and "lower surface" refer to the side of the display panel 100 opposite to the side on which the touch sensing unit 500 is provided (i.e., the opposite side in the Z-axis direction). As used herein, the terms "left," "right," "upper," and "lower" refer to relative positions when the display panel 100 is viewed from the top. For example, the "left side" refers to the opposite side indicated by the arrow in the X-axis direction, the "right side" refers to the side indicated by the arrow in the X-axis direction, the "upper side" refers to the direction indicated by the arrow in the Y-axis direction, and the "lower side" refers to the opposite side indicated by the arrow in the Y-axis direction.

[0072] Reference Figures 1 to 2The display device 10 is designed to display moving images or still images. The display device 10 can be used as a display screen of portable electronic devices such as mobile phones, smart phones, tablet PCs, smart watches, watch phones, mobile communication terminals, electronic notebook computers, e-books, portable multimedia players (PMPs), navigation devices, and ultra-mobile PCs (UMPCs), as well as display screens of various products such as televisions, notebook computers, monitors, billboards, and the Internet of Things (IoT). The display device 10 can be one of an organic light-emitting display device, a liquid crystal display device, a plasma display device, a field emission display device, an electrophoretic display device, an electrowetting display device, a quantum dot light-emitting display device, a micro-LED display device, and the like. In the following description, an organic light-emitting display device is used as the display device 10. However, it should be understood that the exemplary embodiment is not limited thereto.

[0073] According to an exemplary embodiment, the display device 10 includes a display panel 100 , a display driving circuit 200 , a display circuit board 300 , a touch driving circuit 400 , a touch circuit board 410 , and a touch sensing unit (touch sensor) 500 .

[0074] The display panel 100 may be formed in a rectangular plane having a shorter side in a first direction (X-axis direction) and a longer side in a second direction (Y-axis direction) intersecting the first direction (X-axis direction). Each of the corners where the shorter side in the first direction (X-axis direction) intersects the longer side in the second direction (Y-axis direction) may be rounded with a predetermined curvature or may be a right angle. When viewed from the top, the shape of the display panel 100 is not limited to a quadrilateral shape, but may be formed in various polygonal shapes, circular shapes, or elliptical shapes.

[0075] The display panel 100 may be, but is not limited to, substantially flat. The display panel 100 may include bent portions formed at its left and right ends. The bent portions may have a constant curvature or a varying curvature. In addition, the display panel 100 may be flexible so that the display panel 100 can be bent, curved, folded, or rolled.

[0076] The display panel 100 may include pixels disposed in a display area to display an image, and display electrode pads disposed in a non-display area, wherein the non-display area is located around the display area. The display electrode pad may be formed on the display panel 100 at one edge of the display panel 100 to be electrically connected to the display circuit board 300. Figure 3 and Figure 5 The display panel 100 is described in detail.

[0077] The display driver circuit 200 outputs signals and voltages for driving the display panel 100. For example, the display driver circuit 200 may apply data voltages to the data lines. In addition, the display driver circuit 200 may apply power voltages to the power lines and may apply scan control signals to the scan driver. The display driver circuit 200 may be implemented as an integrated circuit (IC) and may be attached to the display panel 100 using chip-on-glass (COG) technology, chip-on-plastic (COP) technology, or ultrasonic bonding. The display driver circuit 200 may be attached to an exposed portion of the display panel 100 that is not covered by the touch sensing unit 500. Alternatively, the display driver circuit 200 may be mounted on the display circuit board 300.

[0078] The display circuit board 300 may be attached to the display electrode pads of the display panel 100 using an anisotropic conductive film. Thus, the leads of the display circuit board 300 may be electrically connected to the display electrode pads of the display panel 100. The display circuit board 300 may be a flexible printed circuit board, a printed circuit board, or a flexible film such as a chip on film.

[0079] The touch sensing unit 500 may be provided on the display panel 100. The touch sensing unit 500 may be formed as a rectangular plane having a shorter side in a first direction (X-axis direction) and a longer side in a second direction (Y-axis direction). Each of the corners where the shorter side in the first direction (X-axis direction) intersects the longer side in the second direction (Y-axis direction) may be rounded with a predetermined curvature, or may be a right angle. When viewed from the top, the shape of the touch sensing unit 500 is not limited to a quadrilateral shape, but may be formed in other polygonal shapes, a circular shape, or an elliptical shape. When viewed from the top, the shape of the touch sensing unit 500 may be similar to that of the display panel 100.

[0080] The touch sensing unit 500 may be, but is not limited to, flat. The touch sensing unit 500 may include bent portions formed at its left and right ends. The bent portions may have a constant curvature or a varying curvature. Furthermore, the touch sensing unit 500 may be formed to be flexible so that it can be bent, curved, folded, or rolled like the display panel 100.

[0081] The touch sensing unit 500 may include a touch electrode disposed in the touch sensor region and detecting a user's touch, and a touch pad disposed in a touch peripheral region, wherein the touch peripheral region is located around the touch sensor region. The touch pad may be formed on the touch sensing unit 500 at one edge of the touch sensing unit 500 to electrically connect to the touch circuit board 410.

[0082] The display device 10 may include Figure 3 The display unit (display panel) DU shown in Figure 3The touch sensing unit (touch sensor) TDU shown in FIG, and the adhesive member SEAL that attaches the display unit DU to the touch sensing unit TDU. The adhesive member SEAL can attach the display unit DU to the touch sensing unit TDU. Figure 3 The first substrate SUB1 shown in FIG. 1 is attached to the touch sensing unit TDU. Figure 3 The second substrate SUB2 is shown in FIG.

[0083] like Figure 1 、 Figure 2 and Figure 3 As shown in FIG, the adhesive member SEAL may be provided on the touch sensing unit 500 (i.e., the touch sensing unit TDU) and on the edge of the display panel 100. That is, the adhesive member SEAL may be provided along the boundary of the touch sensing unit 500 and the boundary of the display panel 100, and may be provided further inward than the display driving circuit 200 and the display circuit board 300, so that the adhesive member SEAL does not overlap with the display driving circuit 200 and the display circuit board 300 in the thickness direction. The adhesive member SEAL may partially overlap with the touch circuit board 410 in the thickness direction.

[0084] Will refer to Figure 3 and Figure 5 The touch sensing unit 500 is described in detail. Figure 1 and Figure 2 In the example shown in FIG, the touch sensing unit 500 is a touch panel separated from the display panel 100, but exemplary embodiments are not limited thereto. For example, the touch sensing unit 500 may be directly formed on the thin film encapsulation layer of the display panel 100.

[0085] The touch circuit board 410 may be attached to the touch pads of the touch sensing unit 500 using an anisotropic conductive film. Thus, the leads of the touch circuit board 410 may be electrically connected to the touch pads of the touch sensing unit 500. The touch circuit board 410 may be a flexible printed circuit board, a printed circuit board, or a flexible film such as a chip on film.

[0086] The touch drive circuit 400 can be connected to the touch electrodes of the touch sensing unit 500. The touch drive circuit 400 applies a touch drive signal to the touch electrodes of the touch sensing unit 500 and measures the capacitance of the touch electrodes. The touch drive signal may include a drive pulse. The touch drive circuit 400 can not only determine whether a touch has been input based on the capacitance, but also calculate the touch coordinates of the location where the touch was input. The touch drive circuit 400 can be implemented as an integrated circuit (IC) and can be mounted on the touch circuit board 410.

[0087] Figure 3 It is along Figure 2 A cross-sectional view taken along line II'.

[0088] Referring to Figure 3 The display device 10 can include a display unit DU, a touch sensing unit TDU, and a sealing member SEAL attaching the display unit DU to the touch sensing unit TDU.

[0089] The display panel 100 (i.e., Figure 1 and Figure 2 The display panel 100 (i.e.,

[0090] The first substrate SUB1 can be a rigid substrate, or can be a flexible substrate that is bendable, foldable, rollable, etc. The first substrate SUB1 can be made of an insulating material such as glass, quartz, and a polymer resin. Examples of the polymer material can include polyether sulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or a combination thereof. Alternatively, the first substrate SUB1 can include a metallic material.

[0091] The thin film transistor layer TFTL can be disposed on the first substrate SUB1. In the thin film transistor layer TFTL, a scan line, a data line, a power line, a scan control line, a data connection line for connecting the display driving circuit 200 with the data line, a pad connection line for connecting the display driving circuit 200 with a display electrode pad, etc., and a thin film transistor in each of the pixels can be disposed. Each of the thin film transistors can include a gate electrode, a semiconductor layer, a source electrode, and a drain electrode. When the scan driver 110 is formed in the non-display area NDA of the display panel 100 as shown in Figure 4

[0092] The thin film transistor layer TFTL can be disposed in the display area DA and the non-display area NDA. Specifically, in the display area DA, the scan line, the data line, the power line, and the thin film transistor in the pixel located in the thin film transistor layer TFTL can be disposed. The scan control line, the data connection line, and the pad connection line of the thin film transistor layer TFTL can be disposed in the non-display area NDA.

[0093] The emission material layer EML can be disposed on the thin film transistor layer TFTL. The emission material layer EML can include a pixel and a bank layer for defining the pixel, in each of which a first electrode, an emission layer, and a second electrode are sequentially stacked with each other to emit light. The pixel in the emission material layer EML can be disposed in the display area DA.

[0094] ​The emission layer may be an organic emission layer containing an organic material. The emission layer may include a hole transport layer, an organic emission layer, and an electron transport layer. When an anode voltage is applied to the first electrode and a cathode voltage is applied to the second electrode through the thin film transistor located in the thin film transistor layer TFTL, holes and electrons move to the organic emission layer through the hole transport layer and the electron transport layer, respectively, so that the holes and electrons combine in the organic emission layer to emit light. In this case, the first electrode may be an anode electrode, and the second electrode may be a cathode electrode.

[0095] The touch sensing unit TDU may include a second substrate SUB2 and a touch sensor layer TSL.

[0096] The second substrate SUB2 may be a rigid substrate, or may be a flexible substrate that can be bent, folded, curled, etc. The second substrate SUB2 may be made of an insulating material such as glass, quartz, and a polymer resin. Examples of polymer materials may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or a combination thereof. Alternatively, the second substrate SUB2 may include a metal material. In addition, the second substrate SUB2 may be used as an encapsulation substrate for encapsulating the emission material layer EML.

[0097] The touch sensor layer TSL may be disposed on the second substrate SUB2. The touch sensor layer TSL may include touch electrodes for sensing a user's touch through capacitive sensing, touch pads, and touch signal lines for connecting the touch pads to the touch electrodes. For example, the touch sensor layer TSL may sense a user's touch through self-capacitance sensing or mutual-capacitance sensing.

[0098] like Figure 5 As shown in FIG, the touch electrodes of the touch sensor layer TSL may be disposed in the touch sensor area TSA overlapping the display area DA. The touch signal lines and touch pads of the touch sensor layer TSL may be disposed in the touch peripheral area TPA overlapping the non-display area NDA. The touch peripheral area TPA may be disposed around the touch sensor area TSA.

[0099] A polarizing film and a cover window may be further provided on the touch sensor layer TSL. The polarizing film may be provided on the touch sensor layer TSL, and the cover window may be attached to the polarizing film through a transparent adhesive member.

[0100] The adhesive member SEAL may attach the first substrate SUB1 of the display unit DU to the second substrate SUB2 of the touch sensing unit TDU. The adhesive member SEAL may be, but is not limited to, a sintered adhesive layer, an ultraviolet curable resin, or a thermosetting resin.

[0101] Despite Figure 3 In the example shown in FIG, there is a space between the emission material layer EML and the second substrate SUB2, but exemplary embodiments are not limited thereto. For example, a filling film may be provided between the emission material layer EML and the second substrate SUB2. The filling film may be an epoxy filling film or a silicon filling film.

[0102] Figure 4 yes Figure 3 For ease of explanation, Figure 4 Only pixels P, scan lines SL, data lines DL, power lines PL, scan control lines SCL, scan driver 110, display driving circuit 200, display electrode pads DP, data link lines DLL and pad link lines PLL of display panel 100 (display unit DU) are shown.

[0103] Reference Figure 4 The display panel 100 may include a display area DA in which pixels P are formed to display an image, and a non-display area NDA that is a peripheral area of ​​the display area DA. The non-display area NDA may be defined as a region extending from the outer side of the display area DA to the edge of the display panel 100.

[0104] Scan lines SL, data lines DL, power lines PL, and pixels P may be arranged in the display area DA. The scan lines SL may be arranged in a first direction (X-axis direction), while the data lines DL may be arranged in a second direction (Y-axis direction) intersecting the first direction (X-axis direction). The power lines PL may include at least one line parallel to the data lines DL in the second direction (Y-axis direction) and a plurality of lines branching from the at least one line in the first direction (X-axis direction).

[0105] Each pixel P may be connected to at least one of the scan lines SL, one of the data lines DL, and a power line PL. Each pixel P may include a thin film transistor (TFT), including a drive transistor and at least one switching transistor, an organic light-emitting diode (OLED), and a capacitor. When a scan signal is applied from the scan line SL, each pixel P receives a data voltage from the data line DL and supplies a drive current to the OLED based on the data voltage applied to the gate electrode, thereby emitting light.

[0106] The scan driver 110 , the display driving circuit 200 , the scan control lines SCL, the data link lines DLL, and the pad link lines PLL may be disposed in the non-display area NDA.

[0107] The scan driver 110 is connected to the display driving circuit 200 through at least one scan control line SCL. Therefore, the scan driver 110 can receive a scan control signal from the display driving circuit 200. The scan driver 110 generates a scan signal according to the scan control signal and provides the scan signal to the scan line SL.

[0108] Despite Figure 4 In the example shown in , the scan driver 110 is formed in the non-display area NDA located on one outer side of the display area DA, but exemplary embodiments are not limited thereto. For example, the scan driver 110 may be formed in the non-display area NDA located on each outer side of the display area DA.

[0109] The display driver circuit 200 can be connected to the display electrode pads DP of the display pad area DPA through the pad connection lines PLL to receive digital video data and timing signals. The display driver circuit 200 converts the digital video data into analog data voltages and provides the analog data voltages to the data lines DL through the data connection lines DLL. In addition, the display driver circuit 200 generates and provides a scan control signal for controlling the scan driver 110 through the scan control line SCL. The pixel P to which the data voltage is to be provided can be selected by the scan signal of the scan driver 110, and the data voltage can be provided to the selected pixel P. The display driver circuit 200 can be implemented as an integrated circuit (IC), and the display driver circuit 200 can be attached to the first substrate SUB1 by chip on glass (COG) technology, chip on plastic (COP) technology, or ultrasonic bonding.

[0110] Figure 5 yes Figure 3 Detailed plan view of an exemplary embodiment of a touch sensing unit (touch sensor) TDU.

[0111] Reference Figure 5 The touch sensing unit TDU includes a touch sensor area TSA for detecting (or sensing) a user's touch and a touch peripheral area TPA disposed around the touch sensor area TSA. The touch sensor area TSA may overlap with the display area DA of the display panel 100, and the touch peripheral area TPA may overlap with the non-display area NDA of the display panel 100.

[0112] When viewed from the top, the touch sensor area TSA may have a rectangular shape.

[0113] The first touch electrodes (or first sensing electrodes) TE and the second touch electrodes (or second sensing electrodes) RE can be disposed in the touch sensor area TSA. The first touch electrodes TE and the second touch electrodes RE can be spaced apart from each other. The first touch electrodes TE can be arranged in a plurality of columns in the second direction (Y-axis direction), and the second touch electrodes RE can be arranged in a plurality of rows in the first direction (X-axis direction). The first touch electrodes TE arranged in the second direction (Y-axis direction) can be electrically connected to each other in each of the columns. Also, the second touch electrodes RE arranged in the first direction (X-axis direction) can be electrically connected to each other in each of the rows.

[0114] The first touch electrodes TE and the second touch electrodes RE can be disposed in the touch sensor area TSA. When viewed from the top, each of the first touch electrodes TE and the second touch electrodes RE disposed on one side and the opposite side in the first direction (X direction) and on one side and the opposite side in the second direction (Y direction) of the touch sensor area TSA can be formed in a diamond shape or a triangular shape. Also, in order to prevent the first touch electrodes TE and the second touch electrodes RE from forming a moiré pattern when a user views an image on the display device 10, the first touch electrodes TE and the second touch electrodes RE can have a side portion bent when viewed from the top. It will be understood that the shape of the first touch electrodes TE and the second touch electrodes RE disposed in the touch sensor area TSA when viewed from the top is not limited to the shape shown in FIG. 1. Figure 5

[0115] The first touch electrodes TE adjacent to each other in the second direction (Y-axis direction) can be electrically connected to each other by a connection electrode CE (see Figure 6 ). In this case, in order to prevent a short circuit from being formed at the intersection of the first touch electrodes TE and the second touch electrodes RE, the first touch electrodes TE and the second touch electrodes RE can be disposed on one layer, and the connection electrode CE can be disposed on a different layer from the first touch electrodes TE and the second touch electrodes RE. As a result, the first touch electrodes TE electrically connected in the second direction (Y-axis direction) and the second touch electrodes RE electrically connected in the first direction (X-axis direction) can be electrically insulated from each other.

[0116] The first touch signal lines TL11 to TL1p, the second touch signal lines TL21 to TL2p, the third touch signal lines RL1 to RLq, and the touch pad TP can be disposed in the touch peripheral area TPA, where p and q are positive integers equal to or greater than 2.

[0117] ​One end of each of the first touch signal lines TL11 to TL1p may be connected to a corresponding one of the first touch electrodes TE disposed on a first side of the touch sensor area TSA. Figure 5 The lower side shown in FIG) may represent one of the four sides of the touch sensor area TSA that is closest to the touch pad area TDA, where the touch pads TP are provided. The other end of each of the first touch signal lines TL11 to TL1p may be connected to some of the touch pads TP of the touch pad area TDA. That is, the first touch signal lines TL11 to TL1p may connect the first touch electrodes TE provided on the first side of the touch sensor area TSA to some of the touch pads TP of the touch pad area TDA.

[0118] For example, Figure 5 As shown in , the (1-1) touch signal line TL11 may be electrically connected to the first touch electrode TE disposed in the first column of the touch sensor area TSA, and the (1-2) touch signal line TL12 may be electrically connected to the first touch electrode TE disposed in the second column of the touch sensor area TSA. Additionally, the (1-(p-1)) touch signal line TL1(p-1) may be electrically connected to the first touch electrode TE disposed in the (p-1)th column of the touch sensor area TSA, and the (1-p) touch signal line TL1p may be electrically connected to the first touch electrode TE disposed in the p-th column of the touch sensor area TSA. In this case, the first column of the touch sensor area TSA may refer to the leftmost column of the touch sensor area TSA, and the p-th column of the touch sensor area TSA may refer to the rightmost column of the touch sensor area TSA.

[0119] One end of each of the second touch signal lines TL21 to TL2p may be connected to a corresponding one of the first touch electrodes TE disposed on the second side of the touch sensor area TSA. Figure 5 The upper side shown in FIG) may represent the opposite side of the first side of the touch sensor area TSA. The other end of each of the second touch signal lines TL21 to TL2p may be connected to other ones of the touch pads TP of the touch pad area TDA. That is, the second touch signal lines TL21 to TL2p may connect the first touch electrodes TE disposed on the second side of the touch sensor area TSA to other ones of the touch pads TP of the touch pad area TDA. For example, Figure 5As shown in , the (2-1) touch signal line TL21 can be electrically connected to the first touch electrode TE provided in the first column of the touch sensor area TSA, and the (2-2) touch signal line TL22 can be electrically connected to the first touch electrode TE provided in the second column of the touch sensor area TSA. In addition, the (2-(p-1)) touch signal line TL2(p-1) can be electrically connected to the first touch electrode TE provided in the (p-1)th column of the touch sensor area TSA, and the (2-p) touch signal line TL2p can be electrically connected to the first touch electrode TE provided in the p-th column of the touch sensor area TSA.

[0120] The second touch signal lines TL21 to TL2p may pass through a fourth side (eg, Figure 5 The touch sensor area TSA is located near the left side thereof and is connected to the first touch electrode TE provided on the second side of the touch sensor area TSA.

[0121] One end of each of the third touch signal lines RL1 to RLq may be connected to a corresponding one of the second touch electrodes RE disposed on the third side of the touch sensor area TSA. Figure 5 The right side shown in FIG may represent the longer right side of the touch sensor area TSA located between the first side and the second side of the touch sensor area TSA. The other end of each of the third touch signal lines RL1 to RLq may be connected to other ones of the touch pads TP of the touch pad area TDA. That is, the third touch signal lines RL1 to RLq may connect the second touch electrodes RE disposed on the third side of the touch sensor area TSA to other ones of the touch pads TP of the touch pad area TDA.

[0122] For example, Figure 5As shown in the figure, the first-third (3-1) touch signal line RL1 can be electrically connected to the second touch electrode RE set in the first row of the touch sensor area TSA, the second-third (3-2) touch signal line RL2 can be electrically connected to the second touch electrode RE set in the second row of the touch sensor area TSA, and the third-third (3-3) touch signal line RL3 can be electrically connected to the second touch electrode RE set in the third row of the touch sensor area TSA. In addition, the (q-3)th to third (3-(q-3)) touch signal line RLq-3 can be electrically connected to the second touch electrode RE set in the (q-3)th row of the touch sensor area TSA, the (q-2)th to third (3-(q-2)) touch signal line RLq-2 can be electrically connected to the second touch electrode RE set in the (q-2)th row of the touch sensor area TSA, the (q-1)th to third (3-(q-1)) touch signal line RLq-1 can be electrically connected to the second touch electrode RE set in the (q-1)th row of the touch sensor area TSA, and the qth to third (3-q) touch signal line RLq can be electrically connected to the second touch electrode RE set in the qth row of the touch sensor area TSA.

[0123] The touch pad TP may be provided on the second substrate SUB2 (eg Figure 3 The touch circuit board 410 may be attached to the touch pad TP using an anisotropic conductive film. Therefore, the touch pad TP may be electrically connected to the touch circuit board 410.

[0124] The first touch electrodes TE and the second touch electrodes RE may be driven by mutual capacitance sensing or self capacitance sensing.

[0125] First, when the first touch electrode TE and the second touch electrode RE are driven by mutual capacitance sensing, a touch drive signal is provided to the first touch electrode TE via the first touch signal lines TL11 to TL1p and the second touch signal lines TL21 to TL2p to charge the mutual capacitance formed at the intersection of the first touch electrode TE and the second touch electrode RE. Then, a change in the charge amount of the mutual capacitance is measured by the second touch electrode RE, and the presence of a touch input is determined based on the change in the charge amount of the mutual capacitance. The touch drive signal may include touch drive pulses.

[0126] Secondly, when the first touch electrodes TE and the second touch electrodes RE are driven by self-capacitance sensing, touch drive signals are provided to both the first touch electrodes TE and the second touch electrodes RE through the first touch signal lines TL11 to TL1p, the second touch signal lines TL21 to TL2p, and the third touch signal lines RL1 to RLq, so as to charge the self-capacitance of the first touch electrodes TE and the second touch electrodes RE. Then, a change in the amount of charge of the self-capacitance is measured through the first touch signal lines TL11 to TL1p, the second touch signal lines TL21 to TL2p, and the third touch signal lines RL1 to RLq, and whether a touch input is performed is determined based on the change in the amount of charge of the self-capacitance.

[0127] In the following description, the touch electrodes are driven by mutual capacitance sensing, in which multiple touch drive pulses are applied to the first touch electrode TE, and changes in the amount of charge of the mutual capacitance are measured through the third touch signal lines RL1 to RLq connected to the second touch electrode RE. In mutual capacitance sensing, the first touch electrode TE can be used as a touch drive electrode, the second touch electrode RE can be used as a touch sensing electrode, the first touch signal lines TL11 to TL1p and the second touch signal lines TL21 to TL2p can be used as touch drive lines, and the third touch signal lines RL1 to RLq can be used as touch sensing lines.

[0128] In addition, a first protection line GL1 , a second protection line GL2 , a third protection line GL3 , a fourth protection line GL4 , a first ground line GRL1 , and a second ground line GRL2 may be provided in the touch peripheral area TPA.

[0129] The first protection line GL1 may be disposed outside the outermost third touch signal line RLq among the third touch signal lines RL1 to RLq. Furthermore, the first ground line GRL1 may be disposed outside the first protection line GL1. That is, the first protection line GL1 is disposed between the outermost third touch signal line RLq among the third touch signal lines RL1 to RLq and the first ground line GRL1. Thus, the first protection line GL1 can reduce the effect of changes in the voltage of the first ground line GRL1 on the qth to third (3-qth) touch signal line RLq. One end of the first protection line GL1 and one end of the first ground line GRL1 may be connected to the rightmost touch pad among the touch pads TP.

[0130] The second protection line GL2 may be disposed between the innermost third touch signal line RL1 of the third touch signal lines RL1 to RLq and the (1-p) touch signal line TL1p. Thus, the first-third (3-1) touch signal line RL1 and the (1-p) touch signal line TL1p can be prevented from interfering with each other. One end of the second protection line GL2 may be connected to the touch pad TP.

[0131] The third protection line GL3 may be disposed between the (1-1) touch signal line TL11 and the (2-1) touch signal line TL21, which is the innermost second touch signal line among the second touch signal lines TL21 to TL2p. Thus, the third protection line GL3 may prevent the (1-1) touch signal line TL11 and the (2-1) touch signal line TL21 from interfering with each other. One end of the third protection line GL3 may be connected to the touch pad TP.

[0132] The fourth protection line GL4 may be disposed outside the outermost second touch signal line TL2p among the second touch signal lines TL21 to TL2p. Furthermore, the second ground line GRL2 may be disposed outside the fourth protection line GL4. That is, the fourth protection line GL4 is disposed between the outermost second touch signal line TL2p among the second touch signal lines TL21 to TL2p and the second ground line GRL2. Thus, the fourth protection line GL4 can reduce the effect of voltage changes of the second ground line GRL2 on the (2-p) touch signal line TL2p. One end of the fourth protection line GL4 and one end of the second ground line GRL2 may be connected to the leftmost touch pad among the touch pads TP.

[0133] A first ground line GRL1 is provided on the outermost right side (i.e., the third side) of the touch sensing unit TDU, and a second ground line GRL2 is provided on the outermost lower side, the outermost left side, and the outermost upper side (i.e., the first side, the second side, and the fourth side) of the touch sensing unit TDU. A ground voltage is applied to the first ground line GRL1 and the second ground line GRL2. Therefore, when static electricity is applied from the outside, the static electricity can be discharged to the first ground line GRL1 and the second ground line GRL2.

[0134] When the first touch electrode TE and the second touch electrode RE are driven by mutual capacitance sensing, it is desirable to apply a ground voltage to the first to fourth protection lines GL1 , GL2 , GL3 , and GL4 .

[0135] In addition, touch dummy pads TDP1 and TDP2 may be further provided on the outer side of the array of touch pads TP in the first direction (X direction). That is, the first touch dummy pad TDP1 may be provided on one side (left side) of the array of touch pads TP in the first direction (X direction), and the second touch dummy pad TDP2 may be provided on the other side (right side) of the array of touch pads TP in the first direction (X direction).

[0136] In addition, a first touch alignment mark TAM1 may be provided on one side (left side) of the first touch dummy pad TDP1 in the first direction (X direction), and a second touch alignment mark TAM2 may be provided on the other side (right side) of the second touch dummy pad TDP2 in the first direction (X direction).

[0137] Figure 6 yes Figure 5 An enlarged plan view of an exemplary embodiment of area A of FIG. Figure 7 It is along Figure 6 A sectional view taken along line II-II'.

[0138] First, refer to Figure 7 A thin film transistor layer TFTL is formed on the first substrate SUB1. The thin film transistor layer TFTL includes a thin film transistor 120, a gate insulating layer 130, an interlayer dielectric layer 140, a protective layer 150, and a planarization layer 160.

[0139] A buffer film BF may be formed on the surface of the first substrate SUB1. The buffer film BF may be formed on the surface of the first substrate SUB1 to protect the thin film transistor 120 and the organic emission layer 172 of the emission material layer EML from moisture that may penetrate the first substrate SUB1. The buffer film BF may be formed of a plurality of inorganic layers alternately stacked one on top of the other. For example, the buffer film BF may be composed of a plurality of layers in which one or more inorganic layers selected from silicon nitride layers, silicon oxynitride layers, silicon oxide layers, titanium oxide layers, and aluminum oxide layers are alternately stacked one on top of the other. The buffer film BF may be removed.

[0140] The thin film transistors 120 are provided on the buffer film BF. Each of the thin film transistors 120 includes an active layer 121, a gate electrode 122, a source electrode 123, and a drain electrode 124. Figure 7 In the embodiment, the thin film transistor 120 is implemented as a top-gate transistor in which the gate electrode 122 is located above the active layer 121. However, it will be understood that the exemplary embodiments are not limited thereto. That is, the thin film transistor 120 may be implemented as a bottom-gate transistor in which the gate electrode 122 is located below the active layer 121, or as a dual-gate transistor in which the gate electrode 122 is provided above and below the active layer 121.

[0141] The active layer 121 is formed on the buffer film BF. The active layer 121 may be an inorganic semiconductor (such as polycrystalline silicon, single crystal silicon, low-temperature polycrystalline silicon, and amorphous silicon) or an oxide semiconductor. A light blocking layer for blocking external light incident on the active layer 121 may be formed between the buffer film BF and the active layer 121.

[0142] The gate insulating layer 130 may be formed on the active layer 121. The gate insulating layer 130 may be formed of an inorganic layer (eg, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0143] The gate electrode 122 and the gate line may be formed on the gate insulating layer 130. The gate electrode 122 and the gate line may be formed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or alloys thereof.

[0144] An interlayer dielectric layer 140 may be formed over the gate electrode 122 and the gate line. The interlayer dielectric layer 140 may be formed of an inorganic layer (eg, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0145] The source electrode 123 and the drain electrode 124 may be formed on the interlayer dielectric layer 140. Each of the source electrode 123 and the drain electrode 124 may be connected to the active layer 121 through a contact hole passing through the gate insulating layer 130 and the interlayer dielectric layer 140. The source electrode 123 and the drain electrode 124 may be formed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0146] A protective layer 150 may be formed on the source electrode 123 and the drain electrode 124 to insulate the thin film transistor 120. The protective layer 150 may be formed of an inorganic layer such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0147] The planarization layer 160 may be formed on the protective layer 150 to provide a flat surface over the step difference of the thin film transistor 120. The planarization layer 160 may be formed of an organic layer such as acrylic resin, epoxy resin, phenol resin, polyamide resin, and polyimide resin.

[0148] The emission material layer EML is formed on the thin film transistor layer TFTL and includes a light emitting element 170 and a bank layer 180 .

[0149] The light emitting elements 170 and the bank layer 180 are formed on the planarization layer 160. Each of the light emitting elements 170 may include a first electrode 171, an organic emission layer 172, and a second electrode 173.

[0150] The first electrode 171 may be formed on the planarization layer 160. The first electrode 171 is connected to the source electrode 123 of the thin film transistor 120 through a contact hole passing through the protection layer 150 and the planarization layer 160.

[0151] In a top-emission organic light-emitting diode in which light is emitted from the organic emission layer 172 toward the second electrode 173, the first electrode 171 may be made of a metal material having high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and indium tin oxide (ITO) (ITO / Al / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0152] In a bottom-emission organic light-emitting diode in which light is emitted from the organic emission layer 172 toward the first electrode 171, the first electrode 171 may be formed of a transparent conductive material (TCP) capable of transmitting light, such as ITO and indium zinc oxide (IZO), or may be formed of a semi-transmissive conductive material, such as magnesium (Mg), silver (Ag), and an alloy of magnesium (Mg) and silver (Ag). In this case, when the first electrode 171 is made of a semi-transmissive metal material, light extraction efficiency can be improved by using a microcavity.

[0153] The bank layer 180 may be formed to separate the first electrode 171 from another first electrode on the planarization layer 160, thereby defining a pixel P. The bank layer 180 may be formed to cover an edge of the first electrode 171. The bank layer 180 may be formed of an organic layer such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0154] In each of the pixels P, a first electrode 171 , an organic emission layer 172 , and a second electrode 173 may be sequentially stacked such that holes from the first electrode 171 and electrons from the second electrode 173 are combined with each other in the organic emission layer 172 to emit light.

[0155] The organic emission layer 172 is formed on the first electrode 171 and the bank layer 180. The organic emission layer 172 may include an organic material and emit light of a specific color. For example, the organic emission layer 172 may include a hole transport layer, an organic material layer, and an electron transport layer. In this case, the organic emission layer 172 of the red pixel may emit red light, the organic emission layer 172 of the green pixel may emit green light, and the organic emission layer 172 of the blue pixel may emit blue light. Alternatively, the organic emission layer 172 of the pixel P may emit white light, in which case the red pixel may further include a red color filter layer, the green pixel may further include a green color filter layer, and the blue pixel may further include a blue color filter layer.

[0156] The second electrode 173 is formed on the organic emission layer 172 . The second electrode 173 may be formed to cover the organic emission layer 172 . The second electrode 173 may be a common layer formed to cross the pixel P. A capping layer may be formed on the second electrode 173 .

[0157] In the top emission organic light emitting diode, the second electrode 173 can be formed of a transparent conductive material capable of transmitting light (TCP) such as ITO and IZO, or can be formed of a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), and an alloy of magnesium (Mg) and silver (Ag). When the second electrode 173 is formed of a semi-transmissive metal material, light extraction efficiency can be improved by using a microcavity.

[0158] In the bottom emission organic light emitting diode, the second electrode 173 can be made of a metal material having high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0159] The second substrate SUB2 is disposed on the emission material layer EML, and the touch sensor layer TSL is formed on the second substrate SUB2. The touch sensor layer TSL can include the first touch electrodes TE, the second touch electrodes RE, the connection electrodes CE, the first touch signal lines TL11 to TL1p, the second touch signal lines TL21 to TL2p, the third touch signal lines RL1 to RLq, the guard lines GL1, GL2, GL3, and GL4, and the ground lines GRL1 and GRL2 as shown in FIG. 1B. Figure 5 Figure 6 Figure 7 Only the first touch electrodes TE, the second touch electrodes RE, the first touch island electrodes TEI, and the connection electrodes CE disposed between the first touch electrodes TE are shown in the touch sensor layer TSL.

[0160] The connection electrodes CE are formed on the second substrate SUB2. Each of the connection electrodes CE connects one of the first touch electrodes TE with a corresponding one of the first touch island electrodes TEI. One end of each of the connection electrodes CE can be connected to one of the first touch electrodes TE, and the other end of each of the connection electrodes CE can be connected to a corresponding one of the first touch island electrodes TEI.

[0161] Referring to Figure 6 Figure 7 The connection electrodes CE can be formed as an opaque metal conductive layer. For example, the connection electrodes CE can be composed of a single layer or multiple layers of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. Thus, the connection electrodes CE can not overlap the pixels P as shown in FIG. 1B, so as not to reduce the aperture ratio of the pixels P, and can be disposed to overlap the bank layer 180. Figure 7 ​​​​

[0162] A first insulating layer 510 is formed on the connection electrode CE. The first insulating layer 510 may be formed of an inorganic layer (eg, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0163] The first touch electrodes TE, the first touch island electrodes TE1, and the second touch electrodes RE are formed on the first insulating layer 510. The first touch electrodes TE can be connected to the connection electrodes CE through the first contact holes CNT1, wherein the first contact holes CNT1 penetrate the first insulating layer 510 to expose the connection electrodes CE. The first touch island electrodes TE1 can be connected to the connection electrodes CE through the second contact holes CNT2, wherein the second contact holes CNT2 penetrate the first insulating layer 510 to expose the connection electrodes CE. In this way, the first touch electrodes TE can be connected to the first touch island electrodes TE1 through the connection electrodes CE. Therefore, the first touch electrodes TE arranged in the second direction (Y-axis direction) can be electrically connected to each other in each column.

[0164] The first touch electrode TE, the first touch island electrode TEI, and the second touch electrode RE may be made of a light-transmitting transparent metal oxide (TCO) such as ITO and IZO. Therefore, even if the first touch electrode TE, the first touch island electrode TEI, and the second touch electrode RE overlap with the pixel P, the aperture ratio of the pixel P is not reduced.

[0165] A second insulating layer 520 is formed on the first touch electrode TE, the first touch island electrode TEI, and the second touch electrode RE. The second insulating layer 520 may be formed of an inorganic layer such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0166] Figure 8 yes Figure 5 FIG. 1 is an enlarged plan view of a first exemplary embodiment of a region B of FIG. Figure 9 It is along Figure 8 A sectional view taken along line IX-IX'. Figure 10 It is along Figure 8 A cross-sectional view taken along line XX'. Figure 11 It is along Figure 8 For example, Figure 8The (q-1)th to third (3-(q-1)) touch signal lines RLq-1, the (q-2)th to third (3-(q-2)) touch signal lines RLq-2, and the (q-3)th to third (3-(q-3)) touch signal lines RLq-3 of the third touch signal lines RL1 to RLq are shown. In the following description, for convenience of explanation, the (q-1)th to third (3-(q-1)) touch signal lines RLq-1 will be referred to as first signal lines, the (q-2)th to third (3-(q-2)) touch signal lines RLq-2 will be referred to as second signal lines, and the (q-3)th to third (3-(q-3)) touch signal lines RLq-3 will be referred to as third signal lines.

[0167] Reference Figures 8 to 11 , the first signal line (or the (q-1)-third (3-(q-1)) touch signal line RLq-1) may include line portions such as a first line portion RLq-11 and a second line portion RLq-12, the second signal line (or the (q-2)-third (3-(q-2)) touch signal line RLq-2) may include line portions such as a first line portion RLq-21 and a second line portion RLq-22, and the third signal line (or the (q-3)-third (3-(q-3)) touch signal line RLq-3) may include line portions such as a first line portion RLq-31 and a second line portion RLq-32.

[0168] In addition, the touch pads TP of the touch pad area TDA may include first to third touch pads TP1 to TP3.

[0169] The first line portions RLq-11, RLq-21, and RLq-31 of the first signal line RLq-1, the second signal line RLq-2, and the third signal line RLq-3 may overlap with and be electrically connected to the touch pads TP1 to TP3, respectively. Specifically, the first line portion RLq-11 of the first signal line RLq-1 may overlap with and be electrically connected to the third touch pad TP3, the first line portion RLq-21 of the second signal line RLq-2 may overlap with and be electrically connected to the second touch pad TP2, and the first line portion RLq-31 of the third signal line RLq-3 may overlap with and be electrically connected to the first touch pad TP1. The first line portions RLq-11, RLq-21, and RLq-31 may extend in the second direction (Y direction).

[0170] The lengths L1, L2, and L3 of the first line portions RLq-11, RLq-21, and RLq-31 in the second direction (Y direction) may increase toward one side in the first direction (X direction). For example, the length L1 of the first line portion RLq-31 of the third signal line RLq-3 may be greater than the length L2 of the first line portion RLq-21 of the second signal line RLq-2 and the length L3 of the first line portion RLq-11 of the first signal line RLq-1. Furthermore, the length L2 of the first line portion RLq-21 of the second signal line RLq-2 may be greater than the length L3 of the first line portion RLq-11 of the first signal line RLq-1.

[0171] The second line portions RLq-12, RLq-22, and RLq-32 of the first signal line RLq-1, the second signal line RLq-2, and the third signal line RLq-3, respectively, may be connected to the first line portions RLq-11, RLq-21, and RLq-31, respectively, and may extend in a first direction (X direction) that intersects with a second direction (Y direction) along which the first line portions RLq-11, RLq-21, and RLq-31 extend.

[0172] That is, the second line portion RLq-12 of the first signal line RLq-1 can be connected to the first line portion RLq-11 of the first signal line RLq-1, the second line portion RLq-22 of the second signal line RLq-2 can be connected to the first line portion RLq-21 of the second signal line RLq-2, and the second line portion RLq-32 of the third signal line RLq-3 can be connected to the first line portion RLq-31 of the third signal line RLq-3.

[0173] The first line portions RLq-11, RLq-21, and RLq-31 of the first signal line RLq-1, the second signal line RLq-2, and the third signal line RLq-3 may extend to the touch pad area TDA. Each of the first line portions RLq-11, RLq-21, and RLq-31 may have a recessed metal opening MOP in the touch pad area TDA. The metal opening MOP may be formed from the surface of the first line portions RLq-11, RLq-21, and RLq-31 through each of the first line portions RLq-11, RLq-21, and RLq-31 in the thickness direction (Z direction). As described above, the first line portions RLq-11, RLq-21, and RLq-31 are made of an opaque conductive material. In this regard, since each of the first line portions RLq-11, RLq-21, and RLq-31 includes the metal opening MOP recessed in the touch pad area TDA, in the process of curing the adhesive member SEAL overlapping the touch pad area TDA, the laser used for the curing process can be more efficiently transmitted to the adhesive member SEAL through the metal opening MOP.

[0174] The metal opening MOP may be surrounded by the material of the first line portions RLq- 11 , RLq- 21 , and RLq- 31 .

[0175] As described above, the touch pads TP1 to TP3 may be provided on portions of the first line portions RLq-11, RLq-21, and RLq-31 located in the touch pad area TDA. Figure 8 and Figure 10 , the touch pads TP1 to TP3 may overlap with the metal openings MOP of the first line portions RLq-11, RLq-21, and RLq-31, respectively. The touch pads TP1 to TP3 may include the same material as the touch electrodes TE and RE. That is, the touch pads TP1 to TP3 may be made of a material including a transparent conductive material.

[0176] exist Figure 8 and Figure 10 In the exemplary embodiment shown in , the metal opening MOP in the first line portion RLq-31 of the third signal line RLq-3 may be provided on the second substrate SUB2. The first insulating layer 510 may be provided on the first line portions RLq-31 separated from each other by the metal opening MOP. The first insulating layer 510 may be provided on the entire surface of the second substrate SUB2. The first touch pad TP1 may be provided on the first insulating layer 510. The portion of the first touch pad TP1 in the metal opening MOP may have the lowest surface level because the first line portion RLq-31 is not provided therein.

[0177] The second insulating layer 520 may be disposed on the first touch pad TP1. The second insulating layer 520 may expose the first touch pad TP1 coupled to the touch circuit board 410 ( Figure 2 ) and may cover the rest of the first touch pad TP1.

[0178] Reference Figure 8 and Figure 11 , the first insulating layer 510 may include a plurality of third contact holes CNT3, wherein the plurality of third contact holes CNT3 electrically connect the first line portion RLq-31 of the third signal line RLq-3 with the first touch pad TP1. When viewed from the top, the plurality of third contact holes CNT3 may surround the metal opening MOP. Although Figure 8 Six third contact holes CNT3 are shown in FIG, but the number of third contact holes CNT3 is not limited to six. The first insulating layer 510 may further include a plurality of fourth contact holes CNT4 electrically connecting the first line portion RLq-21 of the second signal line RLq-2 to the second touch pad TP2, and a plurality of fifth contact holes CNT5 electrically connecting the first line portion RLq-11 of the first signal line RLq-1 to the third touch pad TP3.

[0179] Return to reference Figure 8 , the width D1 of the first line portions RLq-31, RLq-21, and RLq-11 in the first direction (X direction) may be greater than the width D2 of the second line portions RLq-32, RLq-22, and RLq-12 in the second direction (Y direction). By reducing the width D2 of the second line portions RLq-32, RLq-22, and RLq-12 to be greater than the width D1 of the first line portions RLq-31, RLq-21, and RLq-11, the area (i.e., the dead zone) of the touch peripheral area TPA on the lower side (the lower side in the second direction (Y direction)) of the touch sensor area TSA can be reduced.

[0180] In addition, the spacing widths W1 and W2 between adjacent first line portions among the first line portions RLq-31, RLq-21, and RLq-11 in the first direction (X direction) may be greater than the spacing widths W3 and W4 between adjacent second line portions among the second line portions RLq-32, RLq-22, and RLq-12 in the second direction (Y direction).

[0181] Because the spacing widths W3 and W4 between adjacent second line portions in the second line portions RLq-32, RLq-22, and RLq-12 are smaller in the second direction (Y direction), the line density of the region where the second line portions RLq-32, RLq-22, and RLq-12 are located can be greater than the line density of the region where the first line portions RLq-31, RLq-21, and RLq-11 are located. If there is a difference in line density, a defect may occur where the lines are visible from the outside of the display. In other words, if there is a difference in line density, reflected light may be scattered differently at the steps (edges) between the lines, making the lines visible from the outside.

[0182] To improve these problems, in the touch sensing unit TDU according to the illustrated exemplary embodiment, the dummy electrodes DE1 and DE2 may be positioned adjacent to the first line portion having a lower line density, rather than adjacent to the second line portion having a higher line density. For example, the dummy electrodes DE1 and DE2 may be disposed between the first line portion having a lower line density to compensate for the difference in density.

[0183] The first dummy electrode DE1 may be disposed between the first line portion RLq-31 of the adjacent third signal line RLq-3 and the first line portion RLq-21 of the second signal line RLq-2, and the second dummy electrode DE2 may be disposed between the first line portion RLq-21 of the adjacent second signal line RLq-2 and the first line portion RLq-11 of the first signal line RLq-1.

[0184] The dummy electrodes DE1 and DE2 may include the same material as the first signal line RLq-1 and the third signal line RLq-3. The dummy electrodes DE1 and DE2 may be disposed on the same layer as the first line portion RLq-31 of the third signal line RLq-3 and the first line portion RLq-21 of the second signal line RLq-2 and may be made of the same material.

[0185] like Figure 8 As shown in , more than one first dummy electrode DE1 and more than one second dummy electrode DE2 may be arranged so as to be spaced apart from each other in the second direction (Y direction). That is, the array of dummy electrodes DE1 and DE2 arranged in the second direction (Y direction) may be provided between adjacent first line portions RLq-31, RLq-21, and RLq-11. The array of dummy electrodes DE1 and DE2 may be arranged in the first direction (X direction).

[0186] The number of dummy electrodes in the array may increase or decrease in the first direction (X direction). For example, the number of dummy electrodes in the array of the first dummy electrodes DE1 may be greater than the number of dummy electrodes in the array of the second dummy electrodes DE2.

[0187] Reference Figure 8 and Figure 9 The first dummy electrode DE1 may be disposed between the first line portion RLq-31 of the adjacent third signal line RLq-3 and the first line portion RLq-21 of the second signal line RLq-2. The first dummy electrode DE1 may be disposed on the same layer as the first line portion RLq-31 of the third signal line RLq-3 and the first line portion RLq-21 of the second signal line RLq-2. A first insulating layer 510 may be disposed on the first line portion RLq-31, the first line portion RLq-21, and the first dummy electrode DE1. A second insulating layer 520 may be disposed on the first insulating layer 510. The first dummy electrode DE1 may be disposed directly on the upper surface of the second substrate SUB2.

[0188] Return to reference Figure 8 , the dummy electrodes at the edge of the array of the first dummy electrodes DE1 (for example, the uppermost dummy electrodes) can be aligned with an adjacent one of the second line portions in the first direction (X direction), and similarly, the dummy electrodes at the edge of the array of the second dummy electrodes DE2 (for example, the uppermost dummy electrodes) can be aligned with an adjacent one of the second line portions in the first direction (X direction). In other words, the dummy electrodes DE1 and DE2 aligned in the first direction (X direction) are located in a region where the first line portion is provided, where the region has a smaller line density than the line density of the region where the second line portion is provided, and this can increase the line density in the region where the first line portion is provided.

[0189] By arranging the dummy electrodes in this manner, it is possible to suppress different scattering of reflected light at steps (edges) between lines due to differences in line density, and as a result, defects of the lines visible from the outside can be minimized or prevented.

[0190] Hereinafter, other exemplary embodiments will be described. In the following description, the same or similar elements will be denoted by the same or similar reference numerals, and redundant descriptions will be omitted or briefly described.

[0191] Figure 12 yes Figure 5 FIG. 1 is an enlarged plan view of a second exemplary embodiment of an area B of FIG. Figure 13 It is along Figure 12 A sectional view taken along line XIII-XIII'.

[0192] according to Figure 12 and Figure 13 The touch sensing unit of the exemplary embodiment shown in FIG. 8 is different from the touch sensing unit according to the exemplary embodiments described above in that the former includes first line portions RLq- 11_1 to RLq- 31_1 .

[0193] Specifically, the first line portions RLq-11_1 to RLq-31_1 of the first, second, and third signal lines RLq-1_1, RLq-2_1, and RLq-3_1 may further include openings OP1 to OP3 that penetrate the first line portions RLq-11_1 to RLq-31_1 from surfaces thereof, respectively.

[0194] That is, the first opening OP1 can penetrate the first line portion RLq-31_1 of the third signal line RLq-3_1 in the thickness direction from the surface of the first line portion RLq-31_1, the second opening OP2 can penetrate the first line portion RLq-21_1 of the second signal line RLq-2_1 in the thickness direction from the surface of the first line portion RLq-21_1, and the third opening OP3 can penetrate the first line portion RLq-11_1 of the first signal line RLq-1_1 in the thickness direction from the surface.

[0195] Uppermost openings of each of the openings OP1 to OP3 may be aligned with adjacent second line portions in the first direction (X direction), respectively.

[0196] like Figure 12As shown in , there may be more than one first opening OP1 and more than one third opening OP3, and the more than one first opening OP1 may be spaced apart from each other along the second direction (Y direction), and the more than one third opening OP3 may be spaced apart from each other along the second direction (Y direction). That is, the openings OP1 to OP3 are arranged in the second direction (Y direction) inside each of the first line portions RLq-11_1, RLq-21_1, and RLq-31_1, and the array of openings OP1 to OP3 may be arranged in the first direction (X direction).

[0197] The number of openings in the array may increase or decrease in the first direction (X direction). For example, the number of first openings OP1 in the array may be greater than the number of second openings OP2 in the array and the number of third openings OP3 in the array, and the number of second openings OP2 in the array may be greater than the number of third openings OP3 in the array.

[0198] Reference Figure 13 The first line portion RLq-31_1 of the third signal line RLq-3_1 may be disposed on the second substrate SUB2, and a first opening OP1 may be formed through the first line portion RLq-31_1. The first opening OP1 forms a through-hole in the first line portion RLq-31_1, exposing the upper surface of the second substrate SUB2 through the first opening OP1. A first insulating layer 510 may be disposed on the first line portion RLq-31_1, and the first opening OP1 may be filled with the first insulating layer 510. A second insulating layer 520 may be disposed on the first insulating layer 510.

[0199] Figure 14 yes Figure 5 FIG. 1 is an enlarged plan view of a third exemplary embodiment of area B of FIG.

[0200] Figure 14 The exemplary embodiment shown in Figure 12 The exemplary embodiment of Figure 14 Each of the openings OP1_1 to OP3_1 of the exemplary embodiment includes at least two portions separated from each other in the first direction (X direction).

[0201] Specifically, in the first line portion RLq-11_2 of the first signal line RLq-1_2, the first line portion RLq-21_2 of the second signal line RLq-2_2, and the first line portion RLq-31_2 of the third signal line RLq-3_2, each of the openings OP1_1 to OP3_1 may include two patterns separated from each other in the first direction (X direction).

[0202] Other components are the same as above Figure 12and Figure 13 Those elements described are the same; and therefore, redundant descriptions will be omitted.

[0203] Figure 15 yes Figure 5 An enlarged plan view of a fourth exemplary embodiment of region B of FIG.

[0204] according to Figure 15 The touch sensing unit of the exemplary embodiment shown in FIG. 8 is different from the touch sensing unit according to the exemplary embodiments described above in that each of the first line portions RLq-11_3 to RLq-31_3 includes at least one bent portion.

[0205] Specifically, each of the first line portions RLq-11_3 to RLq-31_3 of the first to third signal lines RLq-1 to RLq-3 may have a serpentine shape. As used herein, a serpentine shape may refer to a shape that extends in a first direction (X direction), bends to extend in a second direction (Y direction), and then bends again to extend in the first direction (X direction). In other words, a serpentine shape may refer to a shape that bends at least twice, once in the first direction (X direction) and once in the second direction (Y direction).

[0206] The number of bending points of the first line portion of the touch sensing unit according to the exemplary embodiment may increase in one direction.

[0207] For example, the first line portion RLq-11_3 of the first signal line RLq-1 may have five bending points, that is, it may bend five times. The first line portion RLq-21_3 of the second signal line RLq-2 may have seven bending points, that is, it may bend seven times. The first line portion RLq-31_3 of the third signal line RLq-3 may have nine bending points, that is, it may bend nine times.

[0208] In addition, the length of the first line portion of the touch sensing unit in the second direction (Y direction) may increase along one direction. Specifically, the length of the first line portion RLq-31_3 of the third signal line RLq-3 may be greater than the length of the first line portion RLq-21_3 of the second signal line RLq-2 and the length of the first line portion RLq-11_3 of the first signal line RLq-1, and the length of the first line portion RLq-21_3 of the second signal line RLq-2 may be greater than the length of the first line portion RLq-11_3 of the first signal line RLq-1. In addition, the first line portions RLq-11_3 to RLq-31_3 may include protrusion patterns PT1 and PT2 that protrude from the touch pads TP1 to TP3, respectively, in the first direction (X direction) when viewed from the top. The protrusion patterns PT1 and PT2 may include a first protrusion pattern PT1 that protrudes in the first direction (X direction) and a second protrusion pattern PT2 that protrudes in a direction opposite to the first direction (X direction). For example, the first line portion RLq-21_3 of the second signal line RLq-2 may include the first protrusion pattern PT1, and the first line portion RLq-11_3 of the first signal line RLq-1 may include the second protrusion pattern PT2. The first and second protrusion patterns PT1 and PT2 may face each other.

[0209] Figure 16 yes Figure 5 An enlarged plan view of a fifth exemplary embodiment of area B of FIG.

[0210] Reference Figure 16The first line portions RLq-11_4, RLq-21_4, and RLq-31_4 of the first, second, and third signal lines RLq-1_4 may include first portions RLq-11_4a, RLq-21_4a, and RLq-31_4a, each having a first width, and second portions RLq-11_4b, RLq-21_4b, and RLq-31_4b, each having a second width smaller than the first width. The first portions RLq-11_4a, RLq-21_4a, and RLq-31_4a and the second portions RLq-11_4b, RLq-21_4b, and RLq-31_4b may be alternately arranged in the second direction (Y direction). The first portions RLq-11_4a, RLq-21_4a, and RLq-31_4a may be aligned with adjacent second line portions in the first direction (X direction). The first portions RLq-11_4a, RLq-21_4a, and RLq-31_4a may protrude from both sides of the second portions RLq-11_4b, RLq-21_4b, and RLq-31_4b, respectively, in the first direction (X direction). However, it will be understood that exemplary embodiments are not limited thereto. The first portions RLq-11_4a, RLq-21_4a, and RLq-31_4a may protrude from one side of the second portions RLq-11_4b, RLq-21_4b, and RLq-31_4b, respectively, in the first direction (X direction).

[0211] Figure 17 yes Figure 5 An enlarged plan view of a sixth exemplary embodiment of area B of FIG. Figure 18 It is along Figure 17 A sectional view taken along line XVIII-XVIII'.

[0212] Figure 17 and Figure 18 The touch sensing unit shown in FIG differs from the touch sensing unit according to the exemplary embodiment described above in that the second line portions RLq-12_1 to RLq-32_1 of the first to third signal lines are respectively connected to the first line portions RLq-11_5 to RLq-31_5 of the first to third signal lines through the connection electrodes CE1 to CE3.

[0213] More specifically, a first dummy metal line DML1, a second dummy metal line DML2, and a third dummy metal line DML3 may be further provided, wherein the first dummy metal line DML1 is separated from the second line portion RLq-32_1 of the third signal line in the first direction (X direction), the second dummy metal line DML2 is separated from the second line portion RLq-22_1 of the second signal line in the first direction (X direction), and the third dummy metal line DML3 is separated from the second line portion RLq-12_1 of the first signal line in the first direction (X direction). The first connection electrode CE1 can electrically connect the first line portion RLq-31_5 of the third signal line with the second line portion RLq-32_1 through the sixth contact holes CNT61 and CNT62, the second connection electrode CE2 can electrically connect the first line portion RLq-21_5 of the second signal line with the second line portion RLq-22_1 through the seventh contact holes CNT71 and CNT72, and the third connection electrode CE3 can electrically connect the first line portion RLq-11_5 of the first signal line with the second line portion RLq-12_1 through the eighth contact holes CNT81 and CNT82.

[0214] Each of the connection electrodes CE1 to CE3 may include a transparent conductive material. For example, the connection electrodes CE1 to CE3 may include the same material as the touch pads TP1 to TP3 and may be provided in the same layer as the touch pads TP1 to TP3. The first connection electrode CE1 may overlap the second dummy metal line DML2 and the third dummy metal line DML3 in the thickness direction, and the second connection electrode CE2 may overlap the third dummy metal line DML3 in the thickness direction.

[0215] like Figure 17 and Figure 18 As depicted in FIG, the connection electrodes CE1 to CE3 and the adjacent touch pads TP1 to TP3 may be spaced apart (separated) from each other in the second direction (Y direction).

[0216] Figure 19 yes Figure 5 An enlarged plan view of a seventh exemplary embodiment of area B of FIG. Figure 20 It is along Figure 19 A sectional view taken along line XX-XX'.

[0217] Figure 19 and Figure 20 The exemplary embodiment shown in Figure 17 and Figure 18 The exemplary embodiment differs from the embodiment of FIG. 1 in that the connection electrodes CE1_1 to CE3_1 are connected to the touch pads TP1_1 to TP3_1, respectively.

[0218] Other components are the same as above Figure 17 and Figure 18 Those elements described are the same; and therefore, redundant descriptions will be omitted.

[0219] Figure 21 yes Figure 5 An enlarged plan view of the eighth exemplary embodiment of region B is shown.

[0220] Reference Figure 21 , the touch sensing unit according to example embodiments may include dummy electrodes DE1_1 and DE2_1 disposed between adjacent first line portions RLq-11 to RLq-31, and the dummy electrodes DE1_1 and DE2_1 may include dummy openings DOP1 and DOP2 therein, respectively.

[0221] More than one dummy opening DOP1 and DOP2 may be formed so as to be spaced apart from each other in the second direction (Y direction). Specifically, the first dummy electrode DE1_1 and the plurality of first dummy openings DOP1 formed within the first dummy electrode DE1_1 may be disposed between the first line portion RLq-31 of the third signal line RLq-3 and the first line portion RLq-21 of the second signal line RLq-2. The second dummy electrode DE2_1 and the plurality of second dummy openings DOP2 formed within the second dummy electrode DE2_1 may be disposed between the first line portion RLq-21 of the second signal line RLq-2 and the first line portion RLq-11 of the first signal line RLq-1. The more than one dummy opening DOP1 and DOP2 may be arranged in the second direction (Y direction), and the array of dummy openings DOP1 and DOP2 may be arranged in the first direction (X direction).

[0222] The number of first dummy openings DOP1 in the array may be greater than the number of second dummy openings DOP2 in the array.

[0223] Figure 22 yes Figure 5 An enlarged plan view of a ninth exemplary embodiment of region B of FIG.

[0224] Reference Figure 22 The touch sensing unit according to the exemplary embodiment may adopt a touch sensing unit according to Figure 12 The first line portion RLq-31_1 of the third signal line RLq-3_1 and the first line portion RLq-21_1 of the second signal line RLq-2_1 according to the exemplary embodiment of the present invention, and Figure 21 The first dummy electrode DE1_1 of the exemplary embodiment.

[0225] More specifically, the q-third (3-q) touch signal line RLq of the touch sensing unit according to the illustrated exemplary embodiment may include a first line portion RLq1 and a second line portion RLq2. In the following description, for convenience of explanation, the q-third (3-q) touch signal line RLq is defined as a fourth signal line.

[0226] The first line portion RLq-11_6 of the first signal line RLq-1_6 may include a first auxiliary line portion RLq-11_6a and a second auxiliary line portion RLq-11_6b adjacent to the first auxiliary line portion RLq-11_6a in the second direction (Y direction). The first line portion RLq1 of the fourth signal line RLq may include a first auxiliary line portion RLq1a and a second auxiliary line portion RLq1b adjacent to the first auxiliary line portion RLq1a in the second direction (Y direction). The first auxiliary line portion RLq-11_6a of the first signal line RLq-1_6 and the first auxiliary line portion RLq1a of the fourth signal line RLq may overlap with and be electrically connected to the third touch pad TP3 and the fourth touch pad TP4, respectively, in the thickness direction. The first auxiliary line portion RLq1a may be electrically connected to the fourth touch pad TP4 through the sixth contact hole CNT6.

[0227] When viewed from the top, the shapes of the first auxiliary line portion RLq-11_6a of the first signal line RLq-1_6 and the first auxiliary line portion RLq1a of the fourth signal line RLq may be substantially the same as those of the touch pads TP3 and TP4, respectively. That is, the shapes of the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a may be rectangular, including a longer side extending along the second direction (Y direction) and a shorter side extending along the first direction (X direction). The ends of the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a on the shorter sides may align with the ends of the touch pads TP3 and TP4, respectively, with which they overlap.

[0228] The ends of the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a on the shorter sides may be aligned with each other in the first direction (X direction). That is, in the display device according to this exemplary embodiment, the length of the first auxiliary line portion RLq-11_6a in the second direction (Y direction) may be equal to the length of the first auxiliary line portion RLq1a in the second direction (Y direction).

[0229] like Figure 22As shown in FIG, the second auxiliary line portion RLq-11_6b of the first signal line RLq-1_6 and the second auxiliary line portion RLq1b of the fourth signal line RLq may have a stepped shape and may extend in one direction (e.g., in the first direction (X direction)) from the longer sides (e.g., the right longer sides) of the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a. For example, each of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b may extend from the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a toward the upper right side of the drawing, may be bent to extend in the first direction, and may extend again toward the upper right side.

[0230] The second auxiliary line portion RLq-11_6b of the first signal line RLq-1_6 can be aligned with and physically connected to the second line portion RLq-12 of the first signal line RLq-1_6 extending along the first direction (X direction), and the second auxiliary line portion RLq1b of the fourth signal line RLq can be aligned with and physically connected to the second line portion RLq2 of the fourth signal line RLq extending along the first direction (X direction).

[0231] The width of the second auxiliary line portion RLq-11_6b of the first signal line RLq-1_6 may be different from the width of the second auxiliary line portion RLq1b. For example, the width W5 of the second auxiliary line portion RLq-11_6b may be greater than the width W6 of the second auxiliary line portion RLq1b of the fourth signal line RLq.

[0232] That is, the widths of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b may increase or decrease along one direction, ie, the second direction (Y direction).

[0233] In addition, with Figure 21 Similar to the exemplary embodiment shown in , the touch sensing unit may include a first dummy electrode DE1_1 disposed between adjacent first line portions RLq-31_1 and RLq-21_1, and the first dummy electrode DE1_1 may include a first dummy opening DOP1. Figure 12 Similar to the exemplary embodiment shown in , the first line portions RLq-31_1 and RLq-21_1 may further include openings OP1 and OP2, respectively, wherein the openings OP1 and OP2 penetrate the first line portions RLq-31_1 and RLq-21_1 from surfaces thereof.

[0234] like Figure 22As shown in FIG, a dummy space pattern DSP may be further provided between the second line portion RLq-22 and the first auxiliary line portion RLq-11_6a, the first auxiliary line portion RLq1a, the second auxiliary line portion RLq-11_6b, and the second auxiliary line portion RLq1b. The dummy space pattern DSP may have a stepped shape and may extend toward opposite sides in the first direction (X direction). When viewed from the top, the shape of the dummy space pattern DSP may be substantially the same as the shape of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b.

[0235] like Figure 22 As shown in , more than one dummy space pattern DSP may be provided. The plurality of dummy space patterns DSP may be spaced apart from each other in the second direction (Y direction), but exemplary embodiments are not limited thereto. For example, the plurality of dummy space patterns DSP may be adjacent to each other. The dummy space pattern DSP may be provided on the same layer as the signal line and may include the same material.

[0236] Figure 23 yes Figure 5 An enlarged plan view of a region B of the tenth exemplary embodiment.

[0237] according to Figure 23 The touch sensing unit of the exemplary embodiment shown in FIG. Figure 22 The touch sensing unit of the exemplary embodiment is different in that the second auxiliary line portion RLq-11_6b of the first signal line RLq-1_6 and the second auxiliary line portion RLq1b of the fourth signal line RLq have the same width W7. Figure 23 As shown in FIG, the lengths D4 of the first auxiliary line portions RLq-11_6a of the first signal lines RLq-1_6 are identical to each other.

[0238] In addition, according to Figure 23 The touch sensing unit of the exemplary embodiment is Figure 22 The exemplary embodiment of the present invention differs in that the Figure 22 , the touch pads TP1 and TP2 , the signal lines RLq- 2_1 and RLq- 3_1 , and the first dummy electrode DE1_1 disposed between the signal lines RLq- 2_1 and RLq- 3_1 .

[0239] A dummy space pattern DSP may also be provided on the upper sides of the second auxiliary line portion RLq-11_6b and the second line portion RLq-12. The dummy space pattern DSP may have a stepped shape and may extend toward opposite sides in the first direction (X direction). When viewed from the top, the shape of the dummy space pattern DSP may be substantially the same as the shape of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b.

[0240] As Figure 23 indicated in FIG. 6B, more than one dummy space pattern DSP can be provided. The plurality of dummy space patterns DSP can be spaced apart from each other in the second direction (Y direction), but example embodiments are not limited thereto. For example, the plurality of dummy space patterns DSP can be adjacent to each other. The dummy space patterns DSP can be provided on the same layer as the signal lines, and can include the same material.

[0241] In addition, in the touch sensing unit according to this example embodiment, the width of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b can be equal to the width of the adjacent dummy space pattern DSP.

[0242] As Figure 23 indicated in FIG. 6B, the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b can have a stepped shape, and can extend from the longer side (e.g., the right longer side) of the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a in one direction (e.g., the first direction (X direction)). For example, the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b can extend from the first auxiliary line portion RLq-11_6a and the first auxiliary line portion RLq1a, respectively, toward the right side of the drawing, can extend toward the upper right (in a direction between the first direction (X direction) and the second direction (Y direction)), and can extend again toward the right side (in the first direction (X direction)). The second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b can be physically connected to the second line portions RLq-12 and RLq2, respectively, extending along the first direction (X direction).

[0243] In some example embodiments, the width of the space between adjacent dummy space patterns in the dummy space pattern DSP can be substantially equal to the width of the space between the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b extending substantially in one direction.

[0244] For example, in some example embodiments, the width of the space between adjacent dummy space patterns in the dummy space pattern DSP can be substantially equal to the width of the space between the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b extending substantially in one direction.

[0245] Other elements are the same as those described above with reference to Figure 22 ; and thus, redundant descriptions will be omitted.

[0246] Figure 24 are Figure 5An enlarged plan view of an eleventh exemplary embodiment of a region B of FIG.

[0247] according to Figure 24 The touch sensing unit of the exemplary embodiment shown in FIG. Figure 22 The touch sensing unit according to the exemplary embodiment is different in that the width of the second auxiliary line portion RLq-11_6b is substantially equal to the width of the second auxiliary line portion RLq1b. In addition, the touch sensing unit according to this exemplary embodiment is different from the touch sensing unit according to the exemplary embodiment. Figure 23 The exemplary embodiment of the present invention differs in that the following is added: Figure 22 , the touch pads TP1 and TP2 , the signal lines RLq- 2_1 and RLq- 3_1 , and the first dummy electrode DE1_1 disposed between the signal lines RLq- 2_1 and RLq- 3_1 .

[0248] Widths of the second auxiliary line portion RLq-11_6b and the second auxiliary line portion RLq1b may be substantially equal to widths of adjacent dummy space patterns DSP.

[0249] Other components are the same as above Figure 22 Those elements described are the same; and therefore, redundant descriptions will be omitted.

[0250] Although certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Accordingly, the inventive concept is not limited to such embodiments, but rather to the broader scope of the appended claims and various obvious modifications and equivalent arrangements as will be apparent to those skilled in the art.

Claims

1. A display device, comprising: a display panel having a display area and a non-display area at least partially disposed around the display area; as well as a touch sensor disposed on the display panel and comprising a touch sensor area and a touch pad area adjacent to the touch sensor area; The touch sensor includes a plurality of touch electrodes arranged in the touch sensor area, a plurality of touch pads arranged in the touch pad area in a first direction, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads, respectively. The touch signal line includes a first line portion and a second line portion, the first line portion overlaps the touch pad and extends in a second direction intersecting the first direction, the second line portion is angled relative to a corresponding first line portion of the first line portion, extends in the first direction, and is connected to the touch electrode; The first line portion of the touch signal line has a first length in the second direction, and the first length is different from a second length of the first line portion of an adjacent touch signal line in the second direction; The touch sensor further includes at least one dummy electrode disposed between adjacent touch signal lines among the touch signal lines.

2. The display device according to claim 1, wherein A length of the first line portion in the second direction gradually increases along the first direction toward a side edge of the touch pad area.

3. The display device according to claim 1, wherein Widths of adjacent first line portions among the first line portions in the first direction are equal to each other.

4. The display device according to claim 1, wherein The dummy electrode is provided between adjacent ones of the first line portions.

5. The display device according to claim 4, wherein A first distance between adjacent first line portions in the first line portions is greater than a second distance between adjacent second line portions in the second line portions. The display device according to claim 5 , wherein: The dummy electrode is provided in plurality, and the plurality of dummy electrodes are arranged along a direction in which the first line portion extends.

7. The display device according to claim 6, wherein: The number of the plurality of dummy electrodes gradually increases along the first direction toward a side edge of the touch pad area.

8. The display device according to claim 6, wherein: Dummy electrodes located at edges of the plurality of dummy electrodes are aligned with adjacent second line portions of the second line portions along the first direction.

9. The display device according to claim 4, wherein: Each of the first line portions includes a plurality of openings arranged along the second direction.

10. The display device according to claim 1, wherein The first line portion includes a first auxiliary line portion and a second auxiliary line portion adjacent to the first auxiliary line portion in the second direction, wherein the first auxiliary line portion protrudes from the second auxiliary line portion in the first direction, and wherein the first auxiliary line portion is aligned with the adjacent second line portion in the first direction.

11. The display device according to claim 1, wherein The first line portion is physically separated from the second line portion, and wherein the touch sensor further includes a connection electrode electrically connecting the touch pad and the second line portion.

12. The display device according to claim 11, wherein The connection electrode and the touch pad are provided in the same layer.

13. The display device according to claim 11, wherein The touch sensor further includes a dummy metal line aligned with the second line portion along the first direction and electrically separated from the second line portion.

14. The display device according to claim 11, wherein The connection electrode is physically connected to the touch pad.

15. The display device according to claim 1, further comprising a first insulating layer provided between the first line portion and the touch pad, wherein The touch pad is electrically connected to the first line portion through a contact hole formed in the first insulating layer, wherein each of the first line portions includes a metal opening formed in each of the first line portions, and wherein the touch pad overlaps the metal opening.

16. The display device according to claim 1, wherein The touch signal line includes a first line portion having a serpentine shape, overlapping the touch pad, and a second line portion that is angled relative to the corresponding first line portion, extends in the first direction, and is connected to the touch electrode, and wherein the length of the first line portion in the second direction gradually increases along the first direction toward the side edge of the touch pad area.

17. The display device according to claim 1, wherein The material of the dummy electrode is the same as that of the touch signal line.

18. The display device according to claim 1, wherein The first line portion of the touch signal line and the at least one dummy electrode are disposed on the same layer.

19. The display device according to claim 1, wherein The at least one dummy electrode is disposed in a touch peripheral area outside the touch sensor area and overlapping the non-display area.

20. A display device comprising: a display panel having a display area and a non-display area at least partially disposed around the display area; as well as a touch sensor disposed on the display panel and comprising a touch sensor area and a touch pad area adjacent to the touch sensor area; The touch sensor includes a plurality of touch electrodes arranged in the touch sensor area, a plurality of touch pads arranged in the touch pad area in a first direction, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads respectively. The touch sensor includes at least one dummy electrode disposed between adjacent touch signal lines among the touch signal lines, and the at least one dummy electrode has at least one dummy opening.

21. The display device according to claim 20, wherein The touch signal line includes a first line portion and a second line portion, the first line portion overlaps the touch pad and extends in a second direction intersecting the first direction, the second line portion is inclined relative to the first line portion, extends along the first direction, and is connected to the touch electrode.

22. The display device according to claim 21, wherein The dummy electrode is provided between adjacent ones of the first line portions, a plurality of dummy openings are formed, and the dummy openings are arranged along a direction in which the first line portion extends.

23. The display device according to claim 20, wherein The material of the dummy electrode is the same as that of the touch signal line.

24. The display device according to claim 21, wherein The first line portion of the touch signal line and the at least one dummy electrode are disposed on the same layer.

25. The display device according to claim 20, wherein The at least one dummy electrode is disposed in a touch peripheral area outside the touch sensor area and overlapping the non-display area.

26. A display device comprising: a display panel having a display area and a non-display area at least partially disposed around the display area; as well as a touch sensor disposed on the display panel and comprising a touch sensor area and a touch pad area adjacent to the touch sensor area; The touch sensor includes a plurality of touch electrodes arranged in the touch sensor area, a plurality of touch pads arranged in the touch pad area, and a plurality of touch signal lines electrically connecting the touch electrodes to the touch pads respectively. The touch signal lines include a plurality of first touch signal lines and a plurality of second touch signal lines. The first touch signal line includes a first line portion and a second line portion, the first line portion is connected to the touch pad, and the second line portion is angled relative to a corresponding first line portion of the first line portion, extends in a first direction, and is connected to the touch electrode. wherein the first line portion includes a first auxiliary line portion overlapping the touch pad and a second auxiliary line portion disposed between the first auxiliary line portion and the second line portion, and wherein adjacent first auxiliary line portions of the first auxiliary line portions of the first touch signal line have the same length in a second direction intersecting the first direction, and The touch sensor further includes at least one dummy electrode disposed between adjacent ones of the second touch signal lines.

27. The display device according to claim 26, wherein: Widths of adjacent second auxiliary line portions of the second auxiliary line portions of the first touch signal line are equal to each other.

28. The display device according to claim 26, wherein Widths of adjacent second auxiliary line portions of the second auxiliary line portions of the first touch signal line are different from each other, and widths of the second auxiliary line portions of the first touch signal line gradually increase along the second direction.

29. The display device according to claim 26, wherein The second auxiliary line portion has a stepped shape.

30. The display device according to claim 29, wherein The second touch signal line includes a third line portion and a fourth line portion, wherein the third line portion is connected to the touch pad, and the fourth line portion is angled relative to the third line portion, extends in the first direction, and is connected to the touch electrode, wherein the touch sensor further includes a plurality of dummy patterns, and the dummy patterns have the same shape as the second auxiliary line portion.

31. The display device according to claim 26, wherein The material of the dummy electrode is the same as that of the touch signal line.

32. The display device according to claim 26, wherein The first line portion of the touch signal line and the at least one dummy electrode are disposed on the same layer.

33. The display device according to claim 26, wherein The at least one dummy electrode is disposed in a touch peripheral area outside the touch sensor area and overlapping the non-display area.

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