Display device

Abstract

A display device is provided. The display device includes an input sensor having sensing electrodes and signal lines arranged in a sensing region. Each signal line is connected to a corresponding electrode of the sensing electrodes and is arranged in the line region. One of the signal lines includes: a first portion having a constant width; a second portion arranged outside a corner region of the sensing region, extending from the first portion and having a gradually increasing width in a direction away from the first portion; a third portion extending from the second portion and having a gradually changing width in a direction away from the second portion; and a fourth portion extending from the third portion and having a constant width.

Description

Technical Field

[0001] Exemplary embodiments of the inventive concept relate to a display device, and more particularly, to a display device including an input sensor. Background Art

[0002] Various display devices are being developed for use in multimedia devices such as televisions, mobile phones, desktop computers, navigation devices, and game consoles. Such display devices include a keyboard or a mouse as an input unit, and may also include a touch sensor as an input unit.

[0003] The above information disclosed in this Background section is only for understanding the background of the inventive concept and therefore it may contain information that does not constitute the prior art. Summary of the invention

[0004] Exemplary embodiments of the inventive concept provide a display device including an input sensor in which a signal line has reduced resistance deviation.

[0005] Additional features of the inventive concepts will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the inventive concepts.

[0006] An exemplary embodiment of the inventive concept provides a display device, the display device comprising: a display panel; and an input sensor disposed above the display panel and including a sensing area and a line area. The input sensor comprises: a first electrode group disposed in the sensing area; a second electrode group disposed in the sensing area and crossing the first electrode group; and a first signal line group disposed in the line area and electrically connected to the first electrode group. Each signal line of the signal lines of the first signal line group comprises: a first portion having a constant width; a second portion disposed outside a corner area of ​​the sensing area, extending from the first portion and having a gradually increasing width in a direction away from the first portion; a third portion extending from the second portion and having a gradually changing width in a direction away from the second portion; and a fourth portion extending from the third portion and having a constant width.

[0007] The first electrode group may include a 1st electrode to an i-th (where i is a natural number of 2 or more) electrode arranged away from a pad area at one side of a line area defined in a first direction and extending in a second direction intersecting the first direction. The signal lines of the first signal line group may include a 1st signal line to a k-th signal line (where k is a maximum natural number among natural numbers equal to or less than i / 2). The 1st signal line to the k-th signal line may be sequentially connected to even-numbered electrodes or odd-numbered electrodes among the 1st electrode to the i-th electrode.

[0008] The first portion of the 1st signal line to the first portion of the kth signal line may have a width increasing from the 1st signal line toward the kth signal line.

[0009] As the third portion of the first signal line is adjacent to the fourth portion of the first signal line, the third portion of the first signal line may have a gradually increasing width.

[0010] As the third portion of the k th signal line is adjacent to the fourth portion of the k th signal line, the third portion of the k th signal line may have a gradually decreasing width.

[0011] The fourth portion of the 1st to kth signal lines may have the same width.

[0012] The input sensor may further include a connection electrode connecting a fourth portion of the first signal line to a corresponding electrode of the first to i-th electrodes.

[0013] The connection electrode and the first signal line may be arranged such that an insulating layer is located between the connection electrode and the first signal line, and the insulating layer may be arranged below the first signal line and the corresponding electrode. Each of the fourth portion of the first signal line and the corresponding electrode may be connected to the connection electrode through a connection contact hole passing through the insulating layer.

[0014] The dummy pattern may be disposed on a plane between the corresponding electrode and the fourth portion of the first signal line. The dummy pattern may be spaced apart from each of the corresponding electrode and the fourth portion of the first signal line, and the dummy pattern may overlap the connection electrode.

[0015] A fourth portion of the first signal line may be directly connected to a corresponding electrode of the first to i-th electrodes.

[0016] Each of the 1st to kth signal lines may further include a pad portion extending from the first portion in the first direction to partially overlap the pad region.

[0017] The pad portions of the 1st to kth signal lines may have the same width.

[0018] Each of the 2nd to kth signal lines may further include: a fifth portion extending from the fourth portion and having a gradually increasing width in a direction away from the fourth portion; and a sixth portion extending from the fifth portion and having a constant width.

[0019] The sixth portion of the 2 nd signal line to the sixth portion of the k th signal line may have the same width.

[0020] A width of a region of the line region where fourth portions of the 1st to kth signal lines are disposed may be substantially the same as a width of a region of the line region where sixth portions of the 2nd to kth signal lines are disposed.

[0021] The width of the sixth portion may be greater than the width of the fourth portion.

[0022] The k-th signal line may further include an extension portion extending from the fourth portion, and the extension portion may include a plurality of portions distinguished from each other. A width of a region of the line region in which the fourth portion of the first signal line to the fourth portion of the k-th signal line are disposed may be substantially the same as a width of a region of one of the plurality of portions of the line region in which the extension portion is disposed. The one of the plurality of portions of the extension portion is farthest from the fourth portion of the k-th signal line.

[0023] The second portion is disposed outside an angular region of the sensing region.

[0024] The second portion may have a curved shape or at least one inflection point at which the extension direction changes.

[0025] Another exemplary embodiment of the inventive concept provides a display device, the display device comprising: a display panel; and an input sensor disposed above the display panel and including a sensing region and a line region. The input sensor comprises: a sensing electrode disposed in the sensing region; and a signal line, each of the signal lines being connected to a corresponding electrode of the sensing electrode, and the signal line being disposed in the line region. One of the signal lines comprises: a first portion having a constant width; a second portion disposed outside a corner region of the sensing region, extending from the first portion and having a gradually increasing width in a direction away from the first portion; a third portion extending from the second portion and having a gradually changing width in a direction away from the second portion; and a fourth portion extending from the third portion and having a constant width.

[0026] 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

[0027] The accompanying drawings illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept, wherein the accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0028] Figure 1 is a perspective view of a display device according to an exemplary embodiment of the inventive concept.

[0029] Figure 2A , Figure 2B , Figure 2C and Figure 2D is a cross-sectional view of a display device according to an exemplary embodiment of the inventive concept.

[0030] Figure 3A and Figure 3B is a cross-sectional view of a display panel according to an exemplary embodiment of the inventive concept.

[0031] Figure 4 is a plan view of a display panel according to an exemplary embodiment of the inventive concept.

[0032] Figure 5A is an enlarged cross-sectional view of a display panel according to an exemplary embodiment of the inventive concept.

[0033] Figure 5B is an enlarged cross-sectional view of an upper insulating layer according to an exemplary embodiment of the inventive concept.

[0034] Fig. 6A is a cross-sectional view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0035] Figure 6B is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0036] Figure 6C and Fig.6D is a partial cross-sectional view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0037] Fig. 6E yes Figure 6B An enlarged plan view of area AA.

[0038] Fig. 7A is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0039] Figure 7B yes Fig. 7A An enlarged plan view of area BB.

[0040] Figure 7C It is shown Figure 7B An enlarged plan view of the pad portion of the signal line.

[0041] Figure 7C , Fig.7D , Fig. 7E , Figure 7F and Figure 7G It is shown Figure 7B FIG. 5 is an enlarged plan view of regions BB1 to BB5 of signal lines.

[0042] Figure 7H yes Fig. 7A An enlarged plan view of area CC.

[0043] Fig.7I yes Fig. 7A An enlarged plan view of area EE.

[0044] Figure 7J is a graph showing a result obtained by comparing resistance distribution of lines of an input sensing layer according to an exemplary embodiment of the inventive concept with resistance distribution of lines of an input sensing layer according to a comparative example.

[0045] Figure 8 is a partial plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0046] Fig.9A is a partial plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0047] Fig. 9B is a partial plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0048] Fig. 10A is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0049] Fig. 10B yes Fig. 10A An enlarged plan view of a local area.

[0050] Fig. 10C is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0051] Fig.11A is a perspective view of a display module according to an exemplary embodiment of the inventive concept.

[0052] Fig. 11B is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept.

[0053] Fig. 12A is a perspective view of a display module according to an exemplary embodiment of the inventive concept.

[0054] Fig. 12B is a plan view of an input sensing layer according to an exemplary embodiment of the inventive concept. DETAILED DESCRIPTION

[0055] In the following description, for the purpose of explanation, many specific details are set forth to provide a thorough understanding of the various exemplary embodiments of the invention. As used herein, an "embodiment" is a non-limiting example of a device or method using one or more inventive concepts disclosed herein. However, it is apparent that various exemplary embodiments may be implemented without these specific details or with one or more equivalent arrangements. In other cases, in order to avoid making the various exemplary embodiments unnecessarily obscure, well-known structures and devices are shown in block diagram form. In addition, various exemplary embodiments may be different, but need not be exclusive. For example, without departing from the inventive concept, the specific shape, construction and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0056] Unless otherwise specified, the exemplary embodiments shown will be understood as providing exemplary features of different details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects of various embodiments, etc. (hereinafter individually or collectively referred to as "elements" or "multiple elements") can be further combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0057] The use of cross hatching and / or shading in the drawings is generally provided 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 demand for the specific material, material properties, size, ratio, commonality between the elements shown, and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. When the exemplary embodiments may be implemented differently, the specific process sequence may be performed differently from the described sequence. For example, two continuously described processes may be performed substantially simultaneously or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

[0058] When an element or layer is referred to as being "on" another element or layer, "connected to" or "bonded to" another element or layer, the element or layer may be directly on, directly connected to or directly bonded to the other element or layer, or there may be an intermediate element or intermediate layer. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to" or "directly bonded to" another element or layer, there is no intermediate element or intermediate layer. For this reason, the term "connection" may refer to a physical connection, an electrical connection and / or a fluid connection with or without an intermediate element. In addition, the D1 axis, the D2 axis and the D3 axis are not limited to the three axes of a rectangular coordinate system (such as an x-axis, a y-axis and a z-axis), and may be interpreted in a broader sense. For example, the D1 axis, the D2 axis and the D3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as any combination of only X, only Y, only Z, or two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ for example. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0059] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, without departing from the disclosed teachings, the first element discussed below may be named as the second element.

[0060] For descriptive purposes, spatially relative terms such as "below," "beneath," "below," "above," "above," "higher," and "side" (e.g., as in "sidewall") may be used herein to describe the relationship of one element to another (or other) element(s) as shown in the accompanying drawings. In addition to including the orientations depicted in the accompanying drawings, the spatially relative terms are intended to include different orientations of the device in use, operation, and / or manufacture. For example, if the device in the accompanying drawings is turned over, elements or features described as "below" or "below" other elements or features will subsequently be positioned as "above" the other elements or features. Thus, the exemplary term "below" can include both above and below orientations. In addition, the device can be positioned otherwise (e.g., rotated 90 degrees or at other orientations), so the spatially relative descriptors used herein are interpreted accordingly.

[0061] The terms used here are for the purpose of describing specific embodiments, and are not intended to be limiting. As used here, unless the context clearly indicates otherwise, the singular forms "one", "one (kind / person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, elements, components and / or their groups, but one or more other features, integral bodies, steps, operations, elements, components and / or their groups are not excluded from existence or addition. It is also noted that, as used here, the terms "substantially", "about (approximately)" and other similar terms are used as approximate terms rather than as degree terms, and are used to explain the inherent deviations of measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0062] Various exemplary embodiments are described herein with reference to cross-sectional views and / or exploded views as schematic diagrams of idealized exemplary embodiments and / or intermediate structures. As such, variations in the shapes of the diagrams caused by, for example, manufacturing techniques and / or tolerances are anticipated. Therefore, the exemplary embodiments disclosed herein should not necessarily be interpreted as being limited to the specific illustrated shapes of the regions, but will include deviations in shapes caused by, for example, manufacturing. In this manner, the regions shown in the accompanying drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and as such, are not necessarily intended to be limiting.

[0063] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure is a part. Terms (such as those defined in common 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 so clearly defined herein.

[0064] Figure 1 is a perspective view of a display device DD according to an exemplary embodiment of the inventive concept. Figure 1 , the display device DD can display the image IM through the display surface DD-IS. The display surface DD-IS is parallel to the surface defined by the first direction axis DR1 and the second direction axis DR2. The normal direction of the display surface DD-IS (ie, the thickness direction of the display device DD) is represented as the third direction axis DR3.

[0065] The front surface (or top surface) and the rear surface (or bottom surface) of each member or unit described below are distinguished by the third directional axis DR3. However, the first directional axis to the third directional axis DR1, DR2, and DR3 shown in this exemplary embodiment may be only an example. Hereinafter, the first direction to the third direction may be directions indicated by the first directional axis to the third directional axis DR1, DR2, and DR3, respectively, and represented by the same reference numerals.

[0066] Although a display device DD having a flat display surface is shown in the exemplary embodiment of the inventive concept, the inventive concept is not limited thereto. The display device DD may include a curved display surface or a stereoscopic display surface. The stereoscopic display surface may include a plurality of display areas indicating different directions. For example, the stereoscopic display surface may include a polygonal columnar display surface.

[0067] The display device DD according to the current exemplary embodiment may be a rigid display device DD. However, the inventive concept is not limited thereto. For example, the display device DD may be a flexible display device DD. The flexible display device DD may include a foldable display device or a belt-type display device whose partial area is bendable.

[0068] According to this exemplary embodiment, a display device DD that can be applied to a mobile terminal is exemplarily shown. Although not shown, an electronic module, a camera module, a power module, etc. mounted on a main board may be provided on a frame / casing together with the display device DD to constitute a mobile terminal. The display device DD according to the inventive concept may be applied to large-sized electronic devices such as televisions and monitors, and small and medium-sized electronic devices such as tablet PCs, navigation units for vehicles, game consoles, and smart watches.

[0069] like Figure 1 As shown in , the display surface DD-IS includes an image area DD-DA in which the image IM is displayed and a bezel area DD-NDA adjacent to the image area DD-DA. The bezel area DD-NDA may be an area in which no image is displayed. Figure 1 An icon is shown as an example of the image IM.

[0070] like Figure 1 As shown in , the image area DD-DA may have a substantially rectangular shape. The “substantially rectangular shape” includes not only a rectangular shape as a mathematical meaning but also a rectangular shape in which no vertices are defined in a vertex area (or corner area) but a boundary of a curve is defined.

[0071] The frame area DD-NDA may surround the image area DD-DA. However, the inventive concept is not limited thereto. For example, the shapes of the image area DD-DA and the frame area DD-NDA may be designed relatively.

[0072] FIG. 2A to FIG. 2D is a cross-sectional view of a display device DD according to an exemplary embodiment of the inventive concept. FIG. 2A to FIG. 2D The cross section defined by the second direction axis DR2 and the third direction axis DR3 is shown. FIG. 2A to FIG. 2D To explain the stacking relationship of the functional components constituting the display device DD.

[0073] A display device DD according to an exemplary embodiment of the inventive concept may include a display panel, an input sensor, an anti-reflector, and a window. At least some of the display panel, the input sensor, the anti-reflector, and the window may be formed by a continuous process and at least some of them may be bonded to each other by an adhesive member. FIG. 2A to FIG. 2D An optically clear adhesive OCA is shown as an example of a bonding member. Hereinafter, the bonding member may include a common adhesive or bonding agent. In an exemplary embodiment of the inventive concept, the anti-reflector and the window may be replaced by different components or the anti-reflector and the window may be omitted.

[0074] exist FIG. 2A to FIG. 2D In the embodiment of the present invention, the corresponding components among the input sensor, the anti-reflector, and the window formed by a continuous process relative to other components may be represented as a "layer". In addition, the components among the input sensor, the anti-reflector, and the window bonded to other components by bonding members may be represented as a "panel". The "panel" may include a substrate layer providing a substrate surface, such as a synthetic film, a composite film, a glass substrate, etc., but the substrate layer may be omitted in the "layer". That is, the unit represented as a "layer" may be provided on a substrate surface provided by other units.

[0075] Here, the input sensor, the anti-reflector and the window may be referred to as an input sensing panel ISP, an anti-reflection panel RPP and a window panel WP or an input sensing layer ISL, an anti-reflection layer RPL and a window layer WL.

[0076] like Figure 2A As shown in , the display device DD may include a display panel DP, an input sensing layer ISL, an anti-reflection panel RPP, and a window panel WP. The input sensing layer ISL may be directly disposed on the display panel DP. In this specification, "component B is directly disposed on component A" may mean that a separate adhesive layer / adhesive member is not disposed between component A and component B. After component A is formed, component B may be formed on a substrate surface provided by component A through a continuous process.

[0077] The display panel DP and the input sensing layer ISL disposed directly on the display panel DP may be defined as a display module DM. An optically clear adhesive OCA is disposed between the display module DM and the anti-reflection panel RPP and between the anti-reflection panel RPP and the window panel WP.

[0078] The display panel DP generates an image, and the input sensing layer ISL acquires coordinate information of an external input (e.g., a touch event). Although not separately shown, the display module DM according to an exemplary embodiment of the inventive concept may further include a protective member disposed on the bottom surface of the display panel DP. The protective member and the display panel DP may be bonded to each other by an adhesive member. FIG. 2B to FIG. 2D The display device DD may further include a protective member.

[0079] The display panel DP according to the exemplary embodiment of the inventive concept may be an emissive display panel, but is not limited thereto. For example, the display panel DP may be an organic light-emitting display panel and a quantum dot light-emitting display panel. The light-emitting layer of the organic light-emitting display panel may include an organic light-emitting material. The light-emitting layer of the quantum dot light-emitting display panel may include quantum dots, quantum rods, etc. Hereinafter, an organic light-emitting display panel will be described as an example of the display panel DP.

[0080] The anti-reflection panel RPP reduces the reflectivity of external light incident from the upper side of the window panel WP. The anti-reflection panel RPP according to an exemplary embodiment of the inventive concept may include a retarder and a polarizer. The retarder may be a film type retarder or a liquid crystal coating type retarder, and may include a λ / 2 retarder and / or a λ / 4 retarder. The polarizer may also be a film type polarizer or a liquid crystal coating type polarizer. The film type may include an extended synthetic resin, and the liquid crystal coating type may include liquid crystals arranged in a predetermined orientation. Each of the retarder and the polarizer may also include a protective film. The retarder and the polarizer themselves or the protective film may be defined as a base layer of the anti-reflection panel RPP.

[0081] The anti-reflection panel RPP according to an exemplary embodiment of the inventive concept may include a color filter. The color filter may have a predetermined arrangement. The arrangement of the color filter may be determined in consideration of the color of light emitted from the pixels disposed in the display panel DP. The anti-reflection panel RPP may further include a black matrix adjacent to the color filter.

[0082] The anti-reflection panel RPP according to an exemplary embodiment of the inventive concept may include a destructive interference structure. For example, the destructive interference structure includes a first reflection layer and a second reflection layer disposed on different layers from each other. The first reflection light and the second reflection light respectively reflected from the first reflection layer and the second reflection layer may destructively interfere, thereby reducing the reflectivity of the external light.

[0083] The window panel WP according to an exemplary embodiment of the inventive concept includes a base layer WP-BS and a light blocking pattern WP-BZ. The base layer WP-BS may include a glass substrate and / or a synthetic film. The base layer WP-BS is not limited to a single layer. The base layer WP-BS may include two or more films bonded to each other by an adhesive member.

[0084] The light-blocking pattern WP-BZ partially overlaps with the base layer WP-BS. The light-blocking pattern WP-BZ may be disposed on the rear surface of the base layer WP-BS. The light-blocking pattern WP-BZ may substantially define a border area DD-NDA of the display device DD. The area in which the light-blocking pattern WP-BZ is not disposed may be defined as an image area DD-DA of the display device DD. When limited to the window panel WP, the area in which the light-blocking pattern WP-BZ is disposed may be defined as a light-blocking area of ​​the window panel WP, and the area in which the light-blocking pattern WP-BZ is not disposed may be defined as a transmissive area of ​​the window panel WP.

[0085] The light-blocking pattern WP-BZ may have a multi-layer structure. The multi-layer structure may include a colored color layer and a black light-blocking layer. The colored color layer and the black light-blocking layer may be formed by deposition, printing, and coating processes. Although not shown, the window panel WP may further include a functional coating layer disposed on the entire surface of the base layer WP-BS. The functional coating layer may include an anti-fingerprint layer, an anti-reflection layer, a hard coating layer, etc. In the following, reference is made to FIG. 2B to FIG. 2D , the window panel WP and the window layer WL will be simply illustrated without distinguishing the base layer WP-BS and the light blocking pattern WP-BZ from each other.

[0086] like Figure 2C As shown in , the display device DD may include a display panel DP, an input sensing panel ISP, an anti-reflection panel RPP, and a window panel WP. Figure 2B As shown in , the stacking order of the input sensing panel ISP and the anti-reflection panel RPP can be changed.

[0087] like Figure 2D As shown in , the display device DD may include a display panel DP, an input sensing layer ISL, an anti-reflection layer RPL and a window layer WL. Figure 2A When compared with the display device DD of FIG. 1 , the optically transparent adhesive OCA may be omitted, and the input sensing layer ISL, the anti-reflection layer RPL, and the window layer WL may be formed on the substrate surface provided by the display panel DP through a continuous process. The stacking order of the input sensing layer ISL and the anti-reflection layer RPL may be changed.

[0088] Figure 3A and Figure 3B is a cross-sectional view of a display panel DP according to an exemplary embodiment of the inventive concept.

[0089] like Figure 3A As shown in , the display panel DP may include a base layer BL, a circuit element layer DP-CL disposed on the base layer BL, a display element layer DP-OLED, and an upper insulating layer TFL. Figure 1The display area DP-DA and the non-display area DP-NDA corresponding to the image area DD-DA and the frame area DD-NDA may be defined. In this exemplary embodiment, the area corresponding to the area means that the areas overlap each other and have the same surface area / shape, but is not limited thereto.

[0090] The base layer BL may include at least one plastic film. The base layer BL may include a plastic substrate, a glass substrate, a metal substrate, and an organic / inorganic composite substrate.

[0091] The circuit element layer DP-CL includes at least one insulating layer and circuit elements. The insulating layer includes at least one inorganic film and at least one organic film. The circuit elements include signal lines, pixel driving circuits of pixels, etc., which will be described in detail later.

[0092] The display element layer DP-OLED may include an organic light emitting diode. The display element layer DP-OLED may further include an organic film such as a pixel defining layer.

[0093] The upper insulating layer TFL may include a plurality of thin films. A portion of the thin films may be provided to improve optical efficiency, and the portion of the thin films may be provided to protect the organic light emitting diode. The upper insulating layer TFL will be described in detail later.

[0094] like Figure 3B As shown in FIG, the display panel DP may include a base layer BL, a circuit element layer DP-CL disposed on the base layer BL, a display element layer DP-OLED, an encapsulation layer ES, and a base layer BL (specifically, as shown in FIG. Figure 3B The display layer DS may include a base layer BL, a circuit element layer DP-CL, and a display element layer DP-OLED. The encapsulation layer ES may be separated from the display element layer DP-OLED by a predetermined gap GP. Each of the base layer BL and the encapsulation layer ES may include a plastic substrate, a glass substrate, a metal substrate, and an organic / inorganic composite substrate. The sealant SM may include an organic bonding member or glass frit.

[0095] Figure 4 is a plan view of a display panel DP according to an exemplary embodiment of the inventive concept. Figure 5A is an enlarged cross-sectional view of a display panel DP according to an exemplary embodiment of the inventive concept. Figure 5B is an enlarged cross-sectional view of an upper insulating layer TFL according to an exemplary embodiment of the inventive concept. Figure 3A The display panel DP shows Figure 5A display panel DP.

[0096] like Figure 4As shown in the figure, the display panel DP may include a driving circuit GDC, a plurality of signal lines SGL (hereinafter, referred to as "signal lines"), a plurality of signal pads ("pads" or called pads) DP-PD (hereinafter, referred to as "signal pads"), and a plurality of pixels PX (hereinafter, referred to as "pixels").

[0097] The display area DP-DA may be defined as an area in which pixels PX are disposed. Each pixel PX includes an organic light emitting diode and a pixel driving circuit connected to the organic light emitting diode. Figure 3A and Figure 3B The circuit element layer DP-CL may include a driving circuit GDC, signal lines SGL, signal pads DP-PD, and a pixel driving circuit (not shown).

[0098] The drive circuit GDC may include a scan drive circuit. The scan drive circuit generates a plurality of scan signals (hereinafter referred to as scan signals) to sequentially output the scan signals to a plurality of scan lines GL (hereinafter referred to as scan lines) to be described later. The scan drive circuit may also output other control signals to the pixel drive circuit of each pixel PX.

[0099] The scan driving circuit may include a plurality of thin film transistors manufactured by the same process (eg, a low temperature polysilicon (LTPS) process or a low temperature polycrystalline oxide (LTPO) process) as the pixel driving circuit of the pixel PX.

[0100] The signal lines SGL include scan lines GL, data lines DL, power lines PL, and control signal lines CSL. The scan lines GL are connected to corresponding pixels PX in the pixels PX, respectively, and the data lines DL are connected to corresponding pixels PX in the pixels PX, respectively. The power lines PL are connected to the pixels PX. The control signal lines CSL can provide control signals to the scan driving circuit.

[0101] The signal line SGL overlaps the display area DP-DA and the non-display area DP-NDA. The signal line SGL may include a pad portion and a line portion. The line portion overlaps the display area DP-DA and the non-display area DP-NDA. The pad portion is disposed on one end of the line portion. The pad portion is disposed in the non-display area DP-NDA to overlap with a corresponding signal pad DP-PD of the signal pads DP-PD. An area of ​​the non-display area DP-NDA in which the signal pad DP-PD is disposed may be defined as a pad area DP-PA. The pad area DP-PA may be connected to a circuit board (not shown).

[0102] Basically, the line portion connected to the pixel PX may constitute a large part of the signal line SGL. The line portion is connected to the transistors T1 and T2 of the pixel PX (see Figure 5A). The line portion may have a single-layer structure / multi-layer structure. The line portion may be integral or include two or more parts. The two or more parts may be arranged on different layers from each other and connected to each other through a contact hole passing through an insulating layer arranged between the two or more parts.

[0103] Figure 5A A partial cross-sectional view of a display panel DP corresponding to transistors T1 and T2 and an organic light emitting diode OLED is shown. The circuit element layer DP-CL disposed on the base layer BL includes at least one insulating layer and a circuit element. The circuit element includes a signal line and a pixel driving circuit of a pixel PX. The circuit element layer DP-CL can be formed by a process of forming an insulating layer, a semiconductor layer, and a conductive layer by coating or deposition, and a process of patterning the insulating layer, the semiconductor layer, and the conductive layer by a photolithography process.

[0104] In this exemplary embodiment, the circuit element layer DP-CL may include a buffer layer BFL, first and second inorganic layers 10 and 20 as inorganic layers, and an organic layer 30. The buffer layer BFL may include a plurality of stacked inorganic layers. Figure 5A An example of the arrangement relationship between the first semiconductor pattern OSP1, the second semiconductor pattern OSP2, the first control electrode GE1, the second control electrode GE2, the first input electrode DE1, the first output electrode SE1, the second input electrode DE2, and the second output electrode SE2 constituting the switching transistor T1 and the driving transistor T2 is shown. The first through holes CH1 to the fourth through holes CH4 are exemplarily shown.

[0105] The display element layer DP-OLED may include an organic light emitting diode OLED. The display element layer DP-OLED includes a pixel defining layer PDL. For example, the pixel defining layer PDL may be an organic layer.

[0106] The first electrode AE ​​is disposed on the organic layer 30. The first electrode AE ​​is connected to the second output electrode SE2 through the fifth through hole CH5 passing through the organic layer 30. An opening OP is defined in the pixel defining layer PDL. The opening OP of the pixel defining layer PDL exposes at least a portion of the first electrode AE. The opening OP of the pixel defining layer PDL is referred to as a "light emitting opening" to distinguish it from other openings.

[0107] like Figure 5A As shown in , the display area DP-DA may include an emission area PXA and a non-emission area NPXA adjacent to the emission area PXA. The non-emission area NPXA may surround the emission area PXA. In the current exemplary embodiment, the emission area PXA may be defined to correspond to a portion of the area of ​​the first electrode AE ​​exposed by the light emitting opening OP.

[0108] The hole control layer HCL may be commonly disposed in the emission region PXA and the non-emission region NPXA. The hole control layer HCL may include a hole transport layer and may further include a hole injection layer. The emission layer EML is disposed on the hole control layer HCL. The emission layer EML may be disposed in an area corresponding to the light emitting opening OP. That is, the emission layer EML may be formed separately for each pixel PX. In addition, the emission layer EML may include an organic material and / or an inorganic material. The emission layer EML may generate light having a predetermined color.

[0109] The electron control layer ECL is arranged on the emission layer EML. The electron control layer ECL may include an electron transport layer and may also include an electron injection layer. The hole control layer HCL and the electron control layer ECL may be formed in common throughout a plurality of pixels PX, or the hole control layer HCL and the electron control layer ECL may be formed discretely for a plurality of pixels PX by using an open mask. The second electrode CE is arranged on the electron control layer ECL. The second electrode CE is arranged as a whole and is arranged in common throughout a plurality of pixels PX.

[0110] like Figure 5A and Figure 5B As shown in , the upper insulating layer TFL is disposed on the second electrode CE. The upper insulating layer TFL may include a plurality of thin films. According to this exemplary embodiment, the upper insulating layer TFL may include a cap layer CPL and a thin film encapsulation layer TFE. The thin film encapsulation layer TFE may include a first inorganic layer IOL1, an organic layer OL, and a second inorganic layer IOL2.

[0111] The cap layer CPL is disposed on the second electrode CE to contact the second electrode CE. The cap layer CPL may include an organic material. The first inorganic layer IOL1 is disposed on the cap layer CPL to contact the cap layer CPL. The organic layer OL is disposed on the first inorganic layer IOL1 to contact the first inorganic layer IOL1. The second inorganic layer IOL2 may be disposed on the organic layer OL to contact the organic layer OL.

[0112] The capping layer CPL may protect the second electrode CE from subsequent processes (eg, a sputtering process) and improve emission efficiency of the organic light emitting diode OLED. The capping layer CPL may have a refractive index greater than that of the first inorganic layer IOL1.

[0113] The first inorganic layer IOL1 and the second inorganic layer IOL2 may protect the display element layer DP-OLED from oxygen / moisture, and the organic layer OL may protect the display element layer DP-OLED from foreign substances such as dust particles. Each of the first inorganic layer IOL1 and the second inorganic layer IOL2 may be one of a silicon oxide layer, a silicon nitride layer, and a silicon oxynitride layer. According to an exemplary embodiment, each of the first inorganic layer IOL1 and the second inorganic layer IOL2 may include a titanium oxide layer, an aluminum oxide layer, etc. The organic layer OL may include an acrylic organic layer, but is not limited thereto.

[0114] According to an exemplary embodiment of the inventive concept, an inorganic layer, for example, a LiF layer, may be further disposed between the cap layer CPL and the first inorganic layer IOL1. The LiF layer may improve the emission efficiency of the organic light emitting diode OLED.

[0115] Fig. 6A is a cross-sectional view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Figure 6B is a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Figure 6C and Fig.6D is a partial cross-sectional view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Fig. 6E yes Figure 6B An enlarged plan view of area AA.

[0116] like Fig. 6A As shown in , the input sensing layer ISL may include a first insulating layer IS-IL1, a first conductive layer IS-CL1, a second insulating layer IS-IL2, a second conductive layer IS-CL2, and a third insulating layer IS-IL3. The first insulating layer IS-IL1 may be directly disposed on the upper insulating layer TFL. In another exemplary embodiment of the inventive concept, the first insulating layer IS-IL1 may be omitted.

[0117] Each of the first conductive layer IS-CL1 and the second conductive layer IS-CL2 may have a single-layer structure or a multilayer structure in which a plurality of layers are stacked on the third directional axis DR3. The conductive layer having a multilayer structure may include at least two of a transparent conductive layer and a metal layer. The conductive layer having a multilayer structure may include a metal layer containing metals different from each other. The transparent conductive layer may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), PEDOT, metal nanowires, and graphene. The metal layer may be formed of molybdenum, silver, titanium, copper, aluminum, and alloys thereof. For example, each of the first conductive layer IS-CL1 and the second conductive layer IS-CL2 may have a three-layer metal structure, for example, a three-layer structure of titanium / aluminum / titanium.

[0118] Each of the first conductive layer IS-CL1 and the second conductive layer IS-CL2 may include a plurality of conductive patterns. Hereinafter, an example in which the first conductive layer IS-CL1 includes a first conductive pattern and the second conductive layer IS-CL2 includes a second conductive pattern will be described. Each of the first conductive pattern and the second conductive pattern may include a sensing electrode and a signal line connected to the sensing electrode.

[0119] Each of the first insulating layer IS-IL1 and the second insulating layer IS-IL2 may include an inorganic material or an organic material. In this exemplary embodiment, each of the first insulating layer IS-IL1 and the second insulating layer IS-IL2 may be an inorganic layer including an inorganic material. The inorganic layer may include at least one of titanium oxide, silicon oxide, silicon oxynitride, zirconium oxide, and hafnium oxide. The third insulating layer IS-IL3 may include an organic material. The organic material may include at least one of acrylic resin, methacrylic resin, polyisoprene resin, vinyl resin, epoxy resin, urethane resin, cellulose resin, siloxane resin, polyimide resin, polyamide resin, and perylene resin.

[0120] like Figure 6B As shown in , the input sensing layer ISL may include a sensing area IS-DA and a line area IS-NDA corresponding to the display area DP-DA and the non-display area DP-NDA of the display panel DP. The sensing area IS-DA may be defined as an area in which a first electrode group EG1 and a second electrode group EG2, which will be described later, are disposed.

[0121] The input sensing layer ISL may include a first electrode group EG1, a second electrode group EG2, a first signal line group SG1 electrically connected to corresponding electrodes of the first electrode group EG1, a second signal line group SG2 electrically connected to other electrodes of the first electrode group EG1, and a third signal line group SG3 electrically connected to the second electrode group EG2. The first signal line group SG1, the second signal line group SG2, and the third signal line group SG3 are disposed in a line area IS-NDA.

[0122] In this exemplary embodiment, the input sensing layer ISL may be a capacitive touch sensor that senses external input in a mutual capacitance manner. One of the first electrode group EG1 and the second electrode group EG2 may receive a detection signal, and the other may output a change in capacitance between the first electrode group EG1 and the second electrode group EG2 as a sensing signal.

[0123] The first electrode group EG1 includes a plurality of first sensing electrodes (or electrodes). The first electrode group EG1 includes 1st to i-th (where i is a natural number of 2 or more) electrodes. The first electrode group EG1 including ten electrodes IE1-1 to IE1-10 is shown as an example. The 1st electrode IE1-1 to the 10th electrode IE1-10 may extend in the second direction DR2. The 1st electrode IE1-1 to the 10th electrode IE1-10 are arranged in the first direction DR1 in a direction away from the pad areas IS-PA1, IS-PA2, and IS-PA3.

[0124] The second electrode group EG2 includes a plurality of second sensing electrodes (or electrodes). The second electrode group EG2 includes the 1st electrode to the jth (wherein j is a natural number of 2 or greater) electrode. The second electrode group EG2 including eight electrodes IE2-1 to IE2-8 is shown as an example. The 1st electrode IE2-1 to the 8th electrode IE2-8 intersect the 1st electrode IE1-1 to the 10th electrode IE1-10. The 1st electrode IE2-1 to the 8th electrode IE2-8 can extend in the first direction DR1.

[0125] The first signal line group SG1 includes a plurality of first signal lines (or signal lines). The first signal line group SG1 includes 1st to kth signal lines (where k is the largest natural number among natural numbers equal to or less than i / 2). In this exemplary embodiment, the first signal line group SG1 includes five signal lines.

[0126] The 1st to kth signal lines may be sequentially connected to odd-numbered electrodes or even-numbered electrodes among the 1st to i-th (where i is a natural number of 2 or greater) electrodes. In this exemplary embodiment, the five signal lines of the first signal line group SG1 are respectively connected to even-numbered electrodes among the ten electrodes IE1-1 to IE1-10. The five signal lines of the first signal line group SG1 are respectively connected to the right ends of the even-numbered electrodes.

[0127] The second signal line group SG2 includes a plurality of second signal lines (or signal lines). The second signal line group SG2 includes the 1st signal line to the kth signal line (wherein k is the largest natural number among natural numbers equal to or less than i / 2). In this exemplary embodiment, the second signal line group SG2 includes five signal lines. In this exemplary embodiment, the five signal lines of the second signal line group SG2 are respectively connected to the odd-numbered electrodes among the ten electrodes IE1-1 to IE1-10. The five signal lines of the second signal line group SG2 are respectively connected to the left ends of the odd-numbered electrodes.

[0128] The third signal line group SG3 is connected to the 1st to jth electrodes of the second electrode group EG2, respectively. The 1st to 8th signal lines of the third signal line group SG3 connected to the lower ends of the 1st to 8th electrodes IE2-1 to IE2-8, respectively, are shown as an example.

[0129] A portion of the signal lines of the first signal line group SG1 may be disposed in the first pad area IS-PA1, a portion of the signal lines of the second signal line group SG2 may be disposed in the second pad area IS-PA2, and a portion of the signal lines of the third signal line group SG3 may be disposed in the third pad area IS-PA3.

[0130] Each electrode of the first electrode group EG1 includes a plurality of first sensing parts SP1 and a plurality of first connection parts CP1. The first sensing parts SP1 are arranged in the second direction DR2. Each first connection part CP1 connects two first sensing parts SP1 adjacent to each other in the second direction DR2 among the first sensing parts SP1.

[0131] Each electrode of the second electrode group EG2 includes a plurality of second sensing parts SP2 and a plurality of second connection parts CP2. The second sensing parts SP2 are arranged in the first direction DR1. Each second connection part CP2 connects two second sensing parts SP2 adjacent to each other in the first direction DR1.

[0132] The electrodes of the first electrode group EG1 and the electrodes of the second electrode group EG2 are insulated from each other. Figure 6B An example in which the first connection part CP1 and the second connection part CP2 cross each other is shown. Parts of the plurality of first sensing parts SP1, the plurality of first connection parts CP1, the plurality of second sensing parts SP2, and the plurality of second connection parts CP2 can be Fig. 6A The first conductive layer IS-CL1 is patterned to form the other parts. Fig. 6A The second conductive layer IS-CL2 is formed by patterning.

[0133] like Figure 6C As shown in , a plurality of first connection parts CP1 may be formed by the first conductive layer IS-CL1, a plurality of first sensing parts SP1, a plurality of second sensing parts SP2, and a plurality of second connection parts CP2 may be formed by the second conductive layer IS-CL2. The first sensing parts SP1 and the first connection parts CP1 may be connected to each other through contact holes CNT-I passing through the second insulating layer IS-IL2.

[0134] In this exemplary embodiment, although the plurality of first connection portions CP1 and the plurality of second connection portions CP2 intersect each other, the inventive concept is not limited thereto. For example, each of the first connection portions CP1 may be deformed into a "∧"-shaped curve and / or a "∨"-shaped curve so that the first connection portion CP1 does not overlap with the second connection portion CP2. The first connection portion CP1 having the "∧"-shaped curve and / or the "∨"-shaped curve may overlap with the second sensing portion SP2 on a plane.

[0135] The first signal line group SG1, the second signal line group SG2, and the third signal line group SG3 may be formed by a second conductive layer IS-CL2 (see Fig. 6A )form. Fig.6D 2 shows two signal lines SG1 - 4 and SG1 - 5 in the first signal line group SG1 formed by the second conductive layer IS- CL2 .

[0136] The plurality of first sensing parts SP1 and the plurality of second sensing parts SP2 may have a grid shape. Fig. 6E An example of the first sensing part SP1 having a mesh shape is shown.

[0137] Three types of openings OP-MG, OP-MR, and OP-MB are defined in the first sensing part SP1. The three types of openings OP-MG, OP-MR, and OP-MB may be aligned with the pixel defining layer PDL (see FIG. Figure 5A ) corresponds to the three types of light-emitting openings OP-G, OP-R and OP-B. The three types of light-emitting openings OP-G, OP-R and OP-B can be Figure 5A The light emitting opening OP is defined in the same manner. Although not shown, the same Figure 5A Similar to the described light emitting openings OP and emission regions PXA, three types of emission regions corresponding to the three types of light emitting openings OP-G, OP-R, and OP-B may be set.

[0138] The three types of light emitting openings OP-G, OP-R, and OP-B may be classified according to their surface areas. The surface area of ​​each of the first type light emitting opening OP-G, the second type light emitting opening OP-R, and the third type light emitting opening OP-B is proportional to the emission surface area of ​​the corresponding pixel PX.

[0139] Reference Figure 4 The described plurality of pixels PX may include a green pixel generating green light, a red pixel generating red light, and a blue pixel generating blue light. In this exemplary embodiment, the first type light emitting opening OP-G, the second type light emitting opening OP-R, and the third type light emitting opening OP-B may correspond to the green pixel, the red pixel, and the blue pixel, respectively.

[0140] The three types of openings OP-MG, OP-MR and OP-MB may include first openings OP-MG, second openings OP-MR and third openings OP-MB corresponding to first type light emitting openings OP-G, second type light emitting openings OP-R and third type light emitting openings OP-B, respectively.

[0141] In this exemplary embodiment, although the first opening OP-MG, the second opening OP-MR, and the third opening OP-MB correspond one-to-one to the first type light emitting opening OP-G, the second type light emitting opening OP-R, and the third type light emitting opening OP-B, the inventive concept is not limited thereto. Each of the openings OP-MG, OP-MR, and OP-MB may correspond to two or more of the light emitting openings OP-G, OP-R, and OP-B.

[0142] Fig. 7A is a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Figure 7B yes Fig. 7A An enlarged plan view of area BB. Figure 7C It is shown Figure 7B An enlarged plan view of the pad portion of the signal line. FIG. 7C to FIG. 7G It is shown Figure 7B FIG. 5 is an enlarged plan view of regions BB1 to BB5 of signal lines. Figure 7H yes Fig. 7A An enlarged plan view of area CC. Fig.7I yes Fig. 7A An enlarged plan view of area EE. Figure 7J is a graph showing a result obtained by comparing resistance distribution of a line of an input sensing layer (input sensor) according to an exemplary embodiment of the inventive concept with resistance distribution of a line of an input sensing layer (input sensor) according to a comparative example.

[0143] Fig. 7A The relationship between the sensing area IS-DA and the line area IS-NDA is schematically shown. The first signal line group SG1 disposed in the line area IS-NDA is schematically shown. Fig. 7A , the sensing area IS-DA may have a substantially rectangular shape. The sensing area IS-DA may include a curved line boundary defined by a corner area.

[0144] Figure 7B The first signal line group SG1 including the first to kth signal lines SG1-1 to SG1-k is shown. Each of the first to kth signal lines SG1-1 to SG1-k may include a plurality of portions distinguished from each other. In this exemplary embodiment, k may be a number 17.

[0145] The first to kth signal lines SG1-1 to SG1-k may have different lengths from each other. The first to kth signal lines SG1-1 to SG1-k may include a plurality of different portions from each other. The first signal line SG1-1 includes five portions 1-10 to 1-14 distinguished from each other. The kth signal line SG1-k includes seven portions 1-k0 to 1-k6 distinguished from each other. Figure 7BOnly a portion of the k-th signal line SG1 - k (ie, seven portions 1 - k0 to 1 - k6 ) is shown.

[0146] like Figure 7B and Figure 7C As shown in , each of the 1st to kth signal lines SG1-1 to SG1-k may include pad portions SG1-10 to SG1-k0. Figure 7C In the figure, k is the number 17. Each pad portion SG1-10 to SG1-k0 extends in the first direction DR1 and is aligned with the pad area IS-PA1 (see Fig. 7A The pad portions SG1-10 to SG1-k0 of the first to kth signal lines SG1-1 to SG1-k extend from the first portions SG1-11 to SG1-k1 of each of the first to kth signal lines SG1-1 to SG1-k.

[0147] The pad portions SG1-10 to SG1-k0 of the 1st to kth signal lines SG1-1 to SG1-k may have the same width W0 (or line width). The pad portions SG1-10 to SG1-k0 of the 1st to kth signal lines SG1-1 may have lengths different from each other in the first direction DR1. The 1st to kth signal lines SG1-1 to SG1-k may have lengths gradually increasing from the 1st to kth signal lines SG1-1 to SG1-k. In an exemplary embodiment of the inventive concept, the pad portions SG1-10 to SG1-k0 may not satisfy the above conditions.

[0148] Each of the first to kth signal lines SG1-1 to SG1-k may include at least first to fourth portions. Portions corresponding to the first to kth signal lines SG1-1 to SG1-k may satisfy conditions to be described below.

[0149] like Figure 7B and Fig.7D As shown in FIG. 1 , the first portions SG1 - 11 to SG1 - k1 of the first to kth signal lines SG1 - 1 to SG1 - k extend in the second direction DR2 . Fig.7D , k is the number 17. The first portions SG1-11 to SG1-k1 of the first to kth signal lines SG1-1 to SG1-k may have a constant width W1. The first portions SG1-11 to SG1-k1 of the first to kth signal lines SG1-1 to SG1-k may have a width that gradually increases from the first to kth signal lines SG1-1 to SG1-k.

[0150] exist Figure 7BIn the embodiment, the ends of the first portions SG1-11 to SG1-k1 of the first signal line SG1-1 to the kth signal line SG1-k or the boundary points between the first portions SG1-11 to SG1-k1 and the second portions SG1-12 to SG1-k2 of the first signal line SG1-1 to the kth signal line SG1-k are aligned in the first direction DR1, but are not limited thereto. The ends of the first portions SG1-11 to SG1-k1 of the first signal line SG1-1 to the kth signal line SG1-k or the boundary points between the first portions SG1-11 to SG1-k1 and the second portions SG1-12 to SG1-k2 of the first signal line SG1-1 to the kth signal line SG1-k are aligned in a direction crossing the first direction DR1 and the second direction DR2.

[0151] like Figure 7B and Fig. 7E As shown in FIG. 1 , the second portions SG1 - 12 to SG1 - k2 of the first to kth signal lines SG1 - 1 to SG1 - k have a width W2 that gradually increases in a direction away from the first portions SG1 - 11 to SG1 - k1. Fig. 7E In the example above, k is the number 17.

[0152] In this exemplary embodiment, a portion of the second portions SG1-12 to SG1-k2 of the first to kth signal lines SG1-1 to SG1-k may have a bent shape or at least one inflection point BP at which the extending direction changes. Fig. 7E , the extending direction of each of the first to kth signal lines SG1 - 1 to SG1 - k may be changed in a direction more inclined with respect to the second direction DR2 based on the inflection point BP.

[0153] The second portions SG1 - 12 to SG1 - k2 of the first to kth signal lines SG1 - 1 to SG1 - k are disposed outside a corner area of ​​the sensing area IS-DA.

[0154] The first to k-th signal lines SG1-1 to SG1-k may be divided into a portion extending in the second direction DR2 and a portion extending in the first direction DR1 with respect to the corner region. The second portions SG1-12 to SG1-k2 may be inflection regions of the portion extending in the second direction DR2 and the portion extending in the first direction DR1. In this exemplary embodiment, third portions SG1-13 to SG1-k3 and fourth portions SG1-14 to SG1-k4 of the first to k-th signal lines SG1-1 to SG1-k may also be disposed outside the corner region and correspond to the inflection regions of the first to k-th signal lines SG1-1 to SG1-k.

[0155] like Figure 7B and Figure 7FAs shown in FIG. 1 , the third portions SG1 - 13 to SG1 - k3 of the first to kth signal lines SG1 - 1 to SG1 - k have a width W3 that gradually changes in a direction away from the second portions SG1 - 12 to SG1 - k2. Figure 7F In the example above, k is the number 17.

[0156] like Figure 7B and Figure 7G As shown in , each of the fourth portions SG1-14 to SG1-k4 of the 1st to kth signal lines SG1-1 to SG1-k has a constant width W4. The fourth portions SG1-14 to SG1-k4 of the 1st to kth signal lines SG1-k may have the same width W4. At least a portion of the fourth portions SG1-14 to SG1-k4 of the 1st to kth signal lines SG1-k extend in the first direction DR1.

[0157] Reference Figure 7B and Figure 7F , the third portions SG1-13 to SG1-k3 may correspond to the inflection point portions for converting the width W2 of the first signal line SG1-1 to the kth signal line SG1-k from the second portions SG1-12 to SG1-k2 to the width W4 of the fourth portions SG1-14 to SG1-k4. In this exemplary embodiment, the third portions SG1-13 to SG1-73 of the first signal line SG1-1 to the seventh signal line SG1-7 may have a width W3 that gradually increases in a direction approaching the fourth portions SG1-14 to SG1-74, and the third portions SG1-83 to SG1-173 of the eighth signal line SG1-8 to the seventeenth signal line SG1-17 may have a width W3 that gradually decreases in a direction approaching the fourth portions SG1-84 to SG1-174. The third portions SG1-13 to SG1-73 of some of the signal lines may have a linearly increasing width W3, and the third portions SG1-83 to SG1-173 of other of the signal lines may have a linearly decreasing width W3.

[0158] like Figure 7B and Figure 7G As shown in the figure, the fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1 can be connected to each other through the connecting electrode CNE. Although not shown separately, the last portions of the other signal lines SG1-2 to SG1-17 can also be connected to the corresponding electrodes of the first electrode group EG1 through the connecting electrode CNE.

[0159] like Figure 7B and Figure 7GAs shown in FIG. 1 , the connection electrode CNE is disposed on the fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1. The connection electrode CNE is formed after a patterning process. The connection electrode CNE may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), PEDOT, metal nanowires, and graphene.

[0160] In this exemplary embodiment, the 2nd to kth signal lines SG1-2 to SG1-k may include fifth portions SG1-25 to SG1-k5 extending from fourth portions SG1-24 to SG1-k4 and sixth portions SG1-26 to SG1-k6 extending from fifth portions SG1-25 to SG1-k5. In this exemplary embodiment, k is 17.

[0161] Reference Figure 7B and Figure 7G , the fifth portions SG1-25 to SG1-175 may correspond to an inflection point portion for converting the width W4 of the second to seventeenth signal lines SG1-2 to SG1-17 from the width W4 of the fourth portions SG1-24 to SG1-174 to the width W6 of the sixth portions SG1-26 to SG1-176. In this exemplary embodiment, the fifth portions SG1-25 to SG1-175 of the second to seventeenth signal lines SG1-2 to SG1-17 may have a width W5 that gradually increases in a direction away from the fourth portions SG1-24 to SG1-174.

[0162] The width of the region IS-NA4 in which the fourth portions SG1-14 to SG1-174 are disposed in the second direction DR2 and the width of the region IS-NA6 in which the sixth portions SG1-26 to SG1-176 are disposed in the second direction DR2 may be substantially the same. The sixth portions SG1-26 to SG1-176 may have the same width. The sixth portions SG1-26 to SG1-176 may have a constant width W6. The width W6 of the sixth portions SG1-26 to SG1-176 may be greater than the width W4 of the fourth portions SG1-14 to SG1-174. A smaller number of signal lines are arranged in the same region, and therefore, the width of the signal line may be increased.

[0163] Reference Fig. 7A , Figure 7G and Figure 7H The number of the first to kth signal lines SG1-1 to SG1-k disposed in the same region may gradually decrease as the first to kth signal lines SG1-1 to SG1-k extend in the first direction DR1. In this exemplary embodiment, k may be 17.

[0164] like Figure 7H As shown in FIG. 1 , the sixteenth portions SG1-716 to SG1-1716 of the seventh to seventeenth signal lines SG1-7 to SG1-17 are disposed in a region adjacent to the fourteenth electrode IE1-14 of the first electrode group EG1. The seventh signal line SG1-7 is connected to the fourteenth electrode IE1-14 of the first electrode group EG1 through the connection electrode CNE.

[0165] The width of the area IS-NA16 of the sixteenth portions SG1-716 to SG1-1716 in which the seventh to seventeenth signal lines SG1-7 to SG1-17 are disposed in the second direction DR2 may be equal to Figure 7G The widths of the area IS-NA4 in which the fourth portions SG1-14 to SG1-174 are disposed in the second direction DR2 are substantially the same.

[0166] Fig.7I The last portion of the kth signal line SG1 - k farthest from the fourth portion SG1 - k4 among the portions of the kth signal line SG1 - k is shown. In this exemplary embodiment, k may be a number 17.

[0167] According to this exemplary embodiment, the last portion SG1-1736 of the 17th signal line SG1-17 is disposed to correspond to the 34th electrode IE1-34 which is the last electrode of the first electrode group EG1. The 17th signal line SG1-17 is connected to the 34th electrode IE1-34 of the first electrode group EG1 through the connection electrode CNE. The width of the region IS-NA36 in the second direction DR2 in which the last portion SG1-1736 of the 17th signal line SG1-17 is disposed is Figure 7G Widths of the region IS-NA4 in which the fourth portions SG1-14 to SG1-174 are disposed in the second direction DR2 may be substantially the same.

[0168] In this exemplary embodiment, the kth signal line SG1-k is connected to the 2×kth electrodes of the first electrode group EG1. The kth signal line SG1-k includes a plurality of sections. Here, the 4+2(k-1)th section is connected to the corresponding electrode of the first electrode group EG1.

[0169] Reference Figure 7J , a first graph GH1 and a second graph GH2 represent resistance values ​​of signal lines of the first signal line group SG1. The first graph GH1 represents changes in resistance of signal lines in which the line width is uniform according to a comparative example.

[0170] The second curve GH2 represents the 7A to 7IThe resistance values ​​of the signal lines of the first to fourth parts described. According to this exemplary embodiment, when compared with the comparative example, the resistance value of the signal line having the largest resistance can be reduced. In addition, the deviation between the resistance value of the signal line having a lower order and the resistance value of the signal line having a higher order can be reduced. Since the deviation between the resistance values ​​of the signal lines of the first signal line group SG1 is reduced, the sensing sensitivity can be improved. When the sensing signal is transmitted to the sensing circuit of the input sensor (input sensing layer), the noise caused by the deviation between the resistance values ​​of the signal lines relative to the sensing signal can be minimized.

[0171] Although not shown separately, the second signal line group SG2 (see Figure 6B ) may include 1st to kth signal lines. The 1st to kth signal lines of the second signal line group SG2 may be electrically connected to the odd-numbered electrodes of the first electrode group EG1. Similar to the 1st to kth signal lines of the first signal line group SG1, at least some of the signal lines of the second signal line group SG2 may include the first to fourth parts. The 2nd to kth signal lines of the second signal line group SG2 may include the first to sixth parts.

[0172] The kth signal line SG2-k of the second signal line group SG2 is connected to the (2×k)-1th electrode of the first electrode group EG1. The kth signal line SG2-k includes a plurality of parts. Here, the 4+2(k-1)th part is connected to the corresponding electrode of the first electrode group EG1. The kth signal line SG2-k may also include a pad part.

[0173] Figure 8 is a partial plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Fig.9A is a partial plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Fig. 9B FIG. 1 is a partial plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Figures 1 to 7J The components described are the same as the detailed descriptions of the components.

[0174] Figure 8 and Fig.9A is with Figure 7G The corresponding plane is the plan view. Figure 8 and Fig.9A , the connection relationship between the first signal line SG1-1 of the first signal line group SG1 and the corresponding electrode of the first electrode group EG1 is shown as an example. In addition, this can also be applied to the connection relationship between other signal lines of the first signal line group SG1 and the corresponding electrodes.

[0175] like Figure 8As shown in , the signal lines of the first signal line group SG1 can be directly connected to the corresponding electrodes of the first electrode group EG1. The fourth portion SG1-14 of the first signal line SG1-1 is directly connected to the second electrode IE1-2 of the first electrode group EG1. The fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1 are formed by the same process. The fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1 can be formed by Fig. 6A A second conductive layer IS-CL2 is formed.

[0176] like Fig.9A As shown in FIG, the fourth portion SG1-14 of the first signal line SG1-1 is disposed apart from the second electrode IE1-2 of the first electrode group EG1 in the second direction DR2. The connecting electrode CNE connects the fourth portion SG1-14 of the first signal line SG1-1 to the second electrode IE1-2 of the first electrode group EG1.

[0177] like Fig. 9B As shown in FIG. 1 , the connection electrode CNE is disposed on a layer different from the layer of the fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1. The second insulating layer IS-IL2 covers the connection electrode CNE. The connection electrode CNE may be formed by the first conductive layer IS-CL1 (see FIG. Fig. 6A The fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1 may be connected to the connection electrode CNE through a contact hole CNT-I passing through the second insulating layer IS-IL2, respectively.

[0178] like Fig. 9B As shown in , the dummy pattern GRP may be disposed between the fourth portion SG1-14 of the first signal line SG1-1 and the second electrode IE1-2 of the first electrode group EG1. The dummy pattern GRP may be formed by the second conductive layer IS-CL2. The dummy pattern GRP may overlap with the connection electrode CNE on a plane and intersect with the connection electrode CNE.

[0179] The dummy pattern GRP may receive a bias voltage, for example, a ground voltage. The dummy pattern GRP may be a signal line disposed between the 1st signal line SG1-1 to the kth signal line SG1-k of the first signal line group SG1 and the corresponding electrodes of the first electrode group EG1. The dummy pattern GRP may extend to be disposed between the 1st signal line to the kth signal line of the second signal line group SG2 and the corresponding electrodes of the first electrode group EG1. Basically, the dummy pattern GRP may be a signal line extending along the sensing area IS-DA.

[0180] Fig. 10Ais a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Fig. 10B yes Fig. 10A An enlarged plan view of a local area. Fig. 10C 1 is a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Figures 1 to 9B The components described are the same as the detailed descriptions of the components.

[0181] like Fig. 10A As shown in FIG. 1 , the input sensing layer ISL may further include a first floating pattern FP1 disposed inside the first sensing part SP1 and a second floating pattern FP2 disposed inside the second sensing part SP2. The first floating pattern FP1 and the second floating pattern FP2 may reduce the distance between the input sensing layer ISL and the display panel DP (eg, see FIG. 1 ). Fig. 6A ) between the parasitic capacitance.

[0182] The input sensing layer ISL may further include a floating connection portion BP (hereinafter, referred to as a third connection portion) connected to the first floating pattern FP1. The third connection portion BP may be formed by Fig. 6A The third connection part BP may overlap the second sensing part SP2.

[0183] like Fig. 10A As shown in , the input sensing layer ISL (input sensor) may further include a dummy signal line GSL. The dummy signal line GSL may receive a predetermined bias voltage, for example, a ground voltage. The dummy signal line GSL may be connected to the first floating pattern FP1. The dummy signal line GSL may receive an electrical signal for sensing noise in the sensing area IS-DA. Fig. 9B The dummy pattern GRP may be a part of the dummy signal line GSL.

[0184] The dummy signal line GSL can be Fig. 6A The signal line connection part BP-S (hereinafter, referred to as a fourth connection part) may be disposed in a crossing region between the dummy signal line GSL and the first and second signal line groups SG1 and SG2.

[0185] Fig. 10B A portion of the first sensing electrodes (electrodes) IE1-2 to IE1-5 and an enlarged view of the rightmost second sensing electrode (electrode) IE2-8 are shown. The dummy signal line GSL can be directly connected to the first floating pattern FP1 disposed inside the odd-numbered first sensing electrodes IE1-3 and IE1-5. The even-numbered first sensing electrodes IE1-2 and IE1-4 can be connected to the corresponding signal lines SG1-1 and SG1-2 through the fourth connection portion BP-S. The fourth connection portion BP-S can be formed by Fig. 6AA first conductive layer IS-CL1 is formed.

[0186] like Fig. 10B As shown in , at least one of the first floating patterns FP1 may include a central portion FP1-10 and extensions FP1-20 and FP1-30 disposed on both sides of the central portion FP1-10 in the second direction DR2. Each extension FP1-20 and FP1-30 is connected to a corresponding third connection portion BP. The first floating pattern FP1 disposed on both ends of the first floating pattern FP1 in the second direction DR2 may have a shape different from that of the other first floating patterns FP1. The first floating pattern FP1 disposed on the end portion may include a central portion and one extension disposed only on one side of the central portion.

[0187] like Fig. 10C As shown in , a plurality of dummy signal lines GSL may be provided. The same number of dummy signal lines GSL as the number of electrodes of the first electrode group EG1 may be provided. Each dummy signal line GSL may be connected to a first floating pattern FP1 provided inside a corresponding first sensing electrode.

[0188] Fig.11A is a perspective view of a display module DM according to an exemplary embodiment of the inventive concept. Fig. 11B is a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. Fig. 12A is a perspective view of a display module DM according to an exemplary embodiment of the inventive concept. Fig. 12B is a plan view of an input sensing layer ISL according to an exemplary embodiment of the inventive concept. FIG. 11A to FIG. 12B In FIG. 1 , a “layer” type input sensing layer (input sensor) is shown as an example.

[0189] like Fig.11A As shown in , the display module DM has a notch area NTA that is recessed inward on a plane. The notch area NTA may be defined in each of the display panel DP and the input sensing layer ISL. Here, the notch area NTA is not necessarily the same. The notch area NTA may be defined in a central area in the second direction DR2. However, the inventive concept is not limited to the notch area NTA defined in the central portion.

[0190] like Fig. 11B As shown in FIG. 1 , the shapes of the first electrode group EG1 and the second electrode group EG2 may be deformed due to the notch area NTA. The arrangement and layout of the first signal line group SG1 and the second signal line group SG2 may be different from those of FIG. Figure 6B The input sensing layer ISL is basically the same.

[0191] like Fig. 11BAs shown in , due to the formation of the notch area NTA, the 10th electrode IE1-10 may be divided into two parts. The two parts may be connected to each other through a dummy connection line DSL. Each of the 4th electrode IE2-4 to the 6th electrode IE2-6 of the second electrode group EG2 may have a length less than that of each of the other electrodes.

[0192] like Fig. 12A As shown in , the display module DM has a hole area HA that is recessed inward on a plane. A portion of each of the display panel DP and the input sensing layer ISL may be removed to define the hole area HA. ​​The hole area HA of the display panel DP and the hole area HA of the input sensing layer ISL do not have to be the same. The hole area HA may be a moving path of an optical signal. A plurality of hole areas HA may be defined in the display module DM.

[0193] By removing the display panel DP and the plurality of emission areas PXA (see Figure 5A ) corresponding portion to define the hole area HA of the display panel DP or the hole area HA of the display panel DP may be defined by non-deposition. The hole area HA of the input sensing layer ISL may be an area formed by removing a portion of the sensing parts SP1 and SP2 or an area in which the sensing parts SP1 and SP2 are not formed.

[0194] like Fig. 12B As shown in FIG. 1 , the shapes of the first electrode group EG1 and the second electrode group EG2 may be deformed due to the hole area HA. ​​The arrangement and layout of the first signal line group SG1 and the second signal line group SG2 may be different from those of FIG. Figure 6B The input sensing layer ISL is basically the same.

[0195] The hole area HA of the input sensing layer ISL may be disposed in the intersection area between the first electrode group EG1 and the second electrode group EG2. Here, a dummy connection line (not shown) may be disposed around the hole area HA of the input sensing layer ISL. For example, the dummy connection line may bypass the hole area HA to connect the electrodes in the first electrode group EG1 to each other and to connect the electrodes in the second electrode group EG2 to each other.

[0196] According to the inventive concept, the resistance value of the signal line having the largest resistance of the input sensor can be reduced, and the resistance deviation of the signal line can be reduced.

[0197] Although certain exemplary embodiments have been described herein, other embodiments and modifications will be apparent from this description. Therefore, the inventive concept is not limited to such embodiments, but is limited to the broader scope of the appended claims and various obvious modifications and equivalent arrangements as will be apparent to those of ordinary skill in the art.

Claims

1. A display device, comprising: Display panel; as well as an input sensor disposed above the display panel and comprising a sensing area and a line area, in: The input sensor includes: a first electrode group disposed in the sensing region; a second electrode group disposed in the sensing region and crossing the first electrode group; and a first signal line group disposed in the line region and electrically connected to the first electrode group; and Each signal line of the signal lines of the first signal line group includes: a first portion having a constant width; a second portion extending from the first portion and having a gradually increasing width in a direction away from the first portion; a third portion extending from the second portion and having a gradually changing width in a direction away from the second portion; and a fourth portion extending from the third portion and having a constant width, The third portions of some signal lines in the first signal line group have gradually increasing widths, and the third portions of other signal lines in the first signal line group have gradually decreasing widths.

2. The display device according to claim 1, wherein: The first electrode group includes first to i-th electrodes arranged in a first direction away from a pad region defined at one side of the line region and extending in a second direction crossing the first direction, wherein i is a natural number of 2 or more; The signal lines of the first signal line group include a 1st signal line to a kth signal line, wherein k is a maximum natural number among natural numbers equal to or less than i / 2; and The first signal line to the kth signal line are sequentially connected to even-numbered electrodes or odd-numbered electrodes among the first electrode to the i-th electrode.

3. The display device according to claim 2, wherein: The first portion of the first signal line to the first portion of the k-th signal line have a width that increases from the first signal line toward the k-th signal line.

4. The display device according to claim 2, wherein: As the third portion of the first signal line is adjacent to the fourth portion of the first signal line, the third portion of the first signal line has a gradually increasing width.

5. The display device according to claim 4, wherein: As the third portion of the k th signal line is adjacent to the fourth portion of the k th signal line, the third portion of the k th signal line has a gradually decreasing width.

6. The display device according to claim 2, wherein: The fourth portion of the first signal line to the fourth portion of the kth signal line have the same width.

7. The display device according to claim 2, wherein: The input sensor further includes a connection electrode connecting the fourth portion of the first signal line to a corresponding electrode among the first to i-th electrodes.

8. The display device according to claim 7, wherein: The connection electrode and the first signal line are configured such that an insulating layer is located between the connection electrode and the first signal line; The insulating layer is disposed below the first signal line and the corresponding electrode; and Each of the fourth portion of the first signal line and the corresponding electrode is connected to the connection electrode through a connection contact hole penetrating the insulating layer.

9. The display device according to claim 8, wherein: The input sensor further includes a dummy pattern disposed between the corresponding electrode and the fourth portion of the first signal line on a plane; The dummy pattern is spaced apart from each of the corresponding electrode and the fourth portion of the first signal line; and The dummy pattern overlaps the connecting electrode.

10. The display device according to claim 2, wherein: The fourth portion of the first signal line is directly connected to a corresponding electrode among the first to i-th electrodes.

11. The display device according to claim 2, wherein: Each of the first to kth signal lines further includes a pad portion extending from the first portion in the first direction to partially overlap the pad region.

12. The display device according to claim 11, wherein: The pad portion of the first signal line to the pad portion of the kth signal line have the same width.

13. The display device according to claim 2, wherein: Each of the second signal line to the kth signal line further includes: a fifth portion extending from the fourth portion and having a gradually increasing width in a direction away from the fourth portion; and The sixth portion extends from the fifth portion and has a constant width.

14. The display device according to claim 13, wherein: The sixth portion of the second signal line to the sixth portion of the kth signal line have the same width.

15. The display device according to claim 13, wherein: A width of a region of the line region where the fourth portion of the first signal line to the fourth portion of the kth signal line are disposed is the same as a width of a region of the line region where the sixth portion of the second signal line to the sixth portion of the kth signal line are disposed.

16. The display device according to claim 13, wherein: The width of the sixth portion is greater than the width of the fourth portion.

17. The display device according to claim 2, wherein: The kth signal line further includes an extending portion extending from the fourth portion; The extension portion includes a plurality of portions that are distinguished from each other; The width of a region of the line region in which the fourth portion of the first signal line to the fourth portion of the kth signal line are disposed is the same as the width of a region of the line region in which one of the plurality of portions of the extending portion is disposed; and The one portion of the plurality of portions of the extending portion is farthest from the fourth portion of the kth signal line.

18. The display device according to claim 1, wherein: The second portion is disposed outside a angular region of the sensing region.

19. The display device according to claim 18, wherein: The second portion has a curved shape or at least one inflection point where the extension direction changes.

20. A display device, comprising: Display panel; as well as an input sensor disposed above the display panel and comprising a sensing area and a line area, in: The input sensor includes: sensing electrodes disposed in the sensing region; and signal lines, each of which is connected to a corresponding electrode of the sensing electrodes and is disposed in the line region; and Each of the signal lines includes: a first portion having a constant width; a second portion disposed outside the corner region of the sensing region, extending from the first portion and having a gradually increasing width in a direction away from the first portion; a third portion extending from the second portion and having a gradually changing width in a direction away from the second portion; and a fourth portion extending from the third portion and having a constant width, The third portions of some of the signal lines have gradually increasing widths, and the third portions of other signal lines have gradually decreasing widths.

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