Organic Light Emitting Display Apparatus

Abstract

An organic light-emitting display device according to one embodiment of the present invention may include a substrate having a display area and a non-display area around the display area. An organic light-emitting element is present on the display area of ​​the substrate. Common power wiring connected to the organic light-emitting diode may be disposed in the non-display area of ​​the substrate. The encapsulation layer may include a contact hole that covers the organic light-emitting diode and exposes a portion of the upper surface of the common power wiring. A plurality of touch electrodes may be disposed on the encapsulation layer. Auxiliary wiring electrically connected to the common power wiring through the contact hole may be disposed on the encapsulation layer.

Description

Technology Field

[0001] This specification relates to an organic light-emitting display device, and more specifically, to an organic light-emitting display device capable of reducing the resistance of a common power wiring in a touch-integrated organic light-emitting display device. Background Technology

[0002] A touch screen is a type of input device installed on a display unit that allows a user to input information by touching the screen with a finger or a pen while viewing the display.

[0003] Recently, multimedia display devices such as televisions, mobile phones, tablet computers, navigation systems, and game consoles include touch screens capable of recognizing user touch.

[0004] In a touchscreen integrated display device including a touchscreen, liquid crystal displays, organic light-emitting diode displays, or quantum dot displays may be used as the display device. Organic light-emitting diode displays are attracting attention as next-generation display devices because they have a high response speed, low power consumption, and are self-emissive, requiring no separate light source unlike liquid crystal displays.

[0005] Each of the plurality of pixels constituting the light-emitting display device may include a light-emitting element comprising a light-emitting layer interposed between a pixel driving electrode (or anode electrode) and a common electrode (or cathode electrode), and a pixel circuit for driving the light-emitting element. The pixel circuit may mainly include a switching thin-film transistor, a driving transistor, and a storage capacitor.

[0006] The current flowing from the pixel to the light-emitting element can flow through the common electrode and the common power line. In this case, if the resistance of the common power line is high, the current flow to the light-emitting element is obstructed, which can lead to image quality defects such as stains due to voltage fluctuations (or rising) in the common power line.

[0007] To reduce the resistance of the common power line, the width of the common power line can be increased; however, this presents a problem in that the bezel width of the light-emitting display increases as the width of the common power line increases. As mentioned above, various structures are being researched and applied to reduce the resistance of the common power line. The problem to be solved

[0008] The present invention, which aims to solve the problems of the background technology described above, has as its technical objective the provision of a touch screen integrated organic light-emitting display device in which the resistance of the common power line can be reduced.

[0009] In addition, the present invention has the technical objective of providing a touch screen integrated organic light-emitting display device having reduced resistance of the common power line and a thin bezel width.

[0010] The problems described in this specification are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0011] To achieve the objective as described above, an organic light-emitting display device according to one embodiment of the present invention may include a substrate having a display area and a non-display area around the display area. An organic light-emitting element is present on the display area of ​​the substrate.

[0012] Common power wiring connected to the organic light-emitting diode may be disposed in the non-display area of ​​the substrate. The encapsulation layer may include a contact hole that covers the organic light-emitting diode and exposes a portion of the upper surface of the common power wiring. A plurality of touch electrodes may be disposed on the encapsulation layer. Auxiliary wiring electrically connected to the common power wiring through the contact hole may be disposed on the encapsulation layer.

[0013] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0014] The touch screen integrated organic light-emitting display device according to the embodiments of this specification can prevent image quality defects, such as stains caused by voltage changes in the common power line, by reducing the resistance of the common power line. In addition, the touch screen integrated organic light-emitting display device according to this specification can reduce the bezel width.

[0015] Since the content of the invention described above regarding the problem to be solved, the means for solving the problem, and the effect does not specify the essential features of the claim, the scope of the claim is not limited by the matters described in the content of the invention. Brief explanation of the drawing

[0016] FIG. 1 is an exploded perspective view showing an organic light-emitting display device with an integrated touch sensor. FIG. 2 is a plan view showing an organic light-emitting display device illustrated in FIG. 1. Figure 3 is a plan view illustrating the display panel shown in Figure 2. Figure 4 is a diagram for explaining the touch sensor layer illustrated in Figure 2. FIG. 5 is a cross-sectional view showing one embodiment of an organic light-emitting display device cut along the cutting line I-I' of FIG. 2. FIG. 6 is a cross-sectional view showing another embodiment of an organic light-emitting display device cut along the cutting line I-I' of FIG. 2. Specific details for implementing the invention

[0017] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0018] Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the depicted details. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing the present invention, if it is determined that a detailed description of related prior art may unnecessarily obscure the essence of the present invention, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0019] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0020] In the case of describing positional relationships, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0021] When an element or layer is referred to as "on" another element or layer, it includes cases where another layer or element is placed directly on top of or in between.

[0022] Although terms such as "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of the present invention.

[0023] Throughout the specification, the same reference numerals refer to the same components.

[0024] The size and thickness of each component shown in the drawings are illustrated for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

[0025] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0026] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0027] FIG. 1 is an exploded perspective view showing an organic light-emitting display device with an integrated touch sensor. That is, FIG. 1 is an exploded perspective view showing an organic light-emitting display device having a touch sensor according to the present invention.

[0028] An organic light-emitting display device having a touch sensor illustrated in FIG. 1 senses the presence or absence of a touch and the touch location by detecting a change in mutual capacitance (Cm; touch sensor) caused by a user's touch through the touch electrodes (TE1, TE2) illustrated in FIG. 2 during the touch period. Additionally, the organic light-emitting display device having a touch sensor illustrated in FIG. 1 displays an image through a unit pixel comprising a light-emitting element (130). The unit pixel is composed of red (R), green (G), and blue (B) subpixels (PXL), or red (R), green (G), blue (B), and white (W) subpixels (PXL).

[0029] To this end, the organic light-emitting display device illustrated in FIG. 1 comprises a plurality of subpixels (PXL) arranged in a matrix form on a substrate (100), an encapsulation portion (140) disposed on the plurality of subpixels (PXL), and mutual capacitance (Cm) disposed on the encapsulation portion (140).

[0030] Each of the multiple subpixels (PXL) is equipped with a pixel driving circuit and a light-emitting element (130) connected to the pixel driving circuit.

[0031] The pixel driving circuit includes a switching transistor (T1), a driving transistor (T2), and a storage capacitor (Cst).

[0032] The switching transistor (T1) is turned on when a scan pulse is supplied to the scan line (SL) and supplies the data signal supplied to the data line (DL) to the gate electrode of the storage capacitor (Cst) and the driving transistor (T2).

[0033] The driving transistor (T2) controls the amount of light emitted by the light-emitting element (130) by controlling the current supplied from the high voltage (VDD) supply line to the light-emitting element (130) in response to the data signal supplied to the gate electrode of the driving transistor (T2). And even if the switching transistor (T1) is turned off, the driving transistor (T2) supplies a constant current by means of the voltage charged in the storage capacitor (Cst) until the data signal of the next frame is supplied, thereby allowing the light-emitting element (130) to maintain light emission.

[0034] FIG. 2 is a plan view showing an organic light-emitting display device illustrated in FIG. 1.

[0035] Figure 3 is a plan view illustrating the display panel shown in Figure 2.

[0036] Figure 4 is a diagram for explaining the touch sensor layer illustrated in Figure 2.

[0037] FIG. 2 is a drawing showing a touch screen integrated organic light-emitting display device according to an example of the present specification, FIG. 3 is a drawing for explaining a pixel array layer shown in FIG. 2, and FIG. 4 is a drawing for explaining a touch routing line shown in FIG. 1.

[0038] Referring to FIGS. 2 to 4, a touch screen integrated organic light-emitting display device according to one example of the present specification may include a substrate (100), a pixel array layer, a common power wiring (137), an encapsulation layer, and an auxiliary wiring (250).

[0039] The substrate (100) is a base substrate (or base layer) and includes a plastic material or a glass material. According to one example, the substrate (100) may have a flat rectangular shape, a rectangular shape with each corner rounded with a constant radius of curvature, or a non-rectangular shape having at least six sides. Here, the substrate (100) having a non-rectangular shape may include at least one protrusion or at least one notch portion.

[0040] A substrate (100) according to one example may be divided into a display area (AA) and a non-display area (IA).

[0041] A display area (AA) is provided in the middle area of ​​a substrate (100) and can be defined as an area for displaying images. According to one example, the display area (AA) may have a flat rectangular shape, a rectangular shape with rounded corners having a constant radius of curvature, or a non-rectangular shape having at least six sides. Here, the display area (AA) having a non-rectangular shape may include at least one protrusion or at least one notch.

[0042] A non-display area (IA) is provided in an edge area of ​​the substrate (100) to surround a display area (AA), and can be defined as an area or surrounding area where an image is not displayed. According to one example, the non-display area (IA) may include a first non-display area (IA1) provided at a first edge of the substrate (100), a second non-display area (IA2) provided at a second edge of the substrate (100) adjacent to the first non-display area (IA1), a third non-display area (IA3) provided at a third edge of the substrate (100), and a fourth non-display area (IA4) provided at a fourth edge of the substrate (100) adjacent to the third non-display area. For example, the first non-display area (IA1) may be the upper (or lower) edge area of ​​the substrate (100), the second non-display area (IA2) may be the lower (or upper) edge area of ​​the substrate (100), the third non-display area (IA3) may be the left (or right) edge area of ​​the substrate (100), and the fourth non-display area (IA4) may be the right (or left) edge area of ​​the substrate (100), but is not necessarily limited thereto.

[0043] A pixel array layer may be provided on a display area (AA) of a substrate (100). A pixel array layer according to one example may include a scan line (SL), a data line (DL), a pixel driving power line (PL), and a pixel (P).

[0044] Scan lines (SL) are extended along a first direction (X) and arranged along a second direction (Y) that intersects the first direction (X). A display area (AA) of the substrate (100) includes a plurality of scan lines (SL) that are spaced apart from each other along the second direction (Y) while parallel to the first direction (X). Here, the first direction (X) may be defined as the horizontal direction of the substrate (100) and the second direction (Y) may be defined as the vertical direction of the substrate (100), but is not necessarily limited thereto and may be defined in the opposite way.

[0045] The data lines (DL) are extended along the second direction (Y) and arranged along the first direction (X). The display area (AA) of the substrate (100) includes a plurality of data lines (DL) that are spaced apart from each other along the first direction (X) while parallel to the second direction (Y).

[0046] A pixel driving power line (PL) is positioned on a display area (AA) of a substrate (100) so as to be parallel to a data line (DL). The display area (AA) of the substrate (100) includes a plurality of pixel driving power lines (PL) parallel to the data line (DL). Optionally, the pixel driving power line (PL) may be positioned parallel to a scan line (SL).

[0047] A pixel (P) is placed in a pixel area defined on a display area (AA) of a substrate (100) and is electrically connected to an adjacent scan line (SL), a data line (DL), and a pixel driving power line (PL). Here, the pixel area can be defined by the intersection of the scan line (SL) and the data line (DL).

[0048] According to one example, a pixel (P) may be arranged to have a stripe structure on a display area (AA). In this case, one unit pixel may include a red pixel, a green pixel, and a blue pixel, and furthermore, one unit pixel may additionally include a white pixel.

[0049] According to another example, a pixel (P) may be arranged to have a pentile structure on a display area (AA). In this case, a single unit pixel may include at least one red pixel, at least two green pixels, and at least one blue pixel arranged in a polygonal shape in a planar manner. For example, a single unit pixel having a pentile structure may have one red pixel, two green pixels, and one blue pixel arranged in an octagonal shape in a planar manner, in which case the blue pixel may have the relatively largest aperture area (or light-emitting area), and the green pixel may have the relatively smallest aperture area.

[0050] A pixel (P) may include a pixel circuit (PC) electrically connected to an adjacent scan line (SL), a data line (DL), and a pixel driving power line (PL), and a light-emitting element (ED) electrically connected to the pixel circuit (PC).

[0051] The pixel circuit (PC) controls the current (Ied) flowing from the pixel driving power line (PL) to the light-emitting element (ED) based on the data voltage supplied from the adjacent data line (DL) in response to a scan signal supplied from at least one adjacent scan line (SL).

[0052] A pixel circuit (PC) according to one example may include two thin-film transistors and one capacitor. For example, a pixel circuit (PC) according to one example may include a driving thin-film transistor that supplies a data current (Ied) based on a data voltage to a light-emitting element (ED), a switching transistor that supplies a data voltage supplied from a data line (DL) to the driving thin-film transistor, and a capacitor that stores the gate-source voltage of the driving thin-film transistor.

[0053] A pixel circuit (PC) according to another example may include at least three thin-film transistors and at least one capacitor. For example, a pixel circuit (PC) according to one example may include a current supply circuit, a data supply circuit, and a compensation circuit according to the operation (or function) of each of the at least three thin-film transistors. Here, the current supply circuit may include a driving thin-film transistor that supplies a data current (Ied) based on a data voltage to a light-emitting element (ED). The data supply circuit may include at least one switching thin-film transistor that supplies a data voltage supplied from a data line (DL) to the current supply circuit in response to at least one scan signal. The compensation circuit may include at least one compensation thin-film transistor that compensates for a change in the characteristic value (threshold voltage and / or mobility) of the driving thin-film transistor in response to at least one scan signal.

[0054] The light-emitting element (ED) emits light by means of a data current (Ied) supplied from the pixel circuit (PC) and emits light of a brightness corresponding to the data current (Ied). In this case, the data current (Ied) can flow from the pixel driving power line (PL) to the common power wiring (137) through the driving thin-film transistor and the light-emitting element (ED).

[0055] A light-emitting element (ED) according to one example may include a pixel driving electrode (or first electrode) electrically connected to a pixel circuit (PC), a light-emitting layer formed on the pixel driving electrode, and a common electrode (or second electrode) (CE) electrically connected to the light-emitting layer.

[0056] The common power wiring (137) is placed on the non-display area (IA) of the substrate (100) and is electrically connected to the common electrode (CE) placed on the display area (AA).

[0057] According to one example, a common power wiring (137) is arranged along the second to fourth non-display areas (IA2, IA3, IA4) adjacent to the display area (IA) of the substrate (100) with a constant line width, and surrounds the remaining portion excluding a part of the display area (AA) adjacent to the first non-display area (IA1) of the substrate (100). One end of the common power wiring (137) may be placed on one side of the first non-display area (IA1), and the other end of the common power wiring (137) may be placed on the other side of the first non-display area (IA1). Additionally, the space between the one end and the other end of the common power wiring (137) may be arranged to surround the second to fourth non-display areas (IA2, IA3, IA4). Accordingly, the common power wiring (137) according to one example may have a planar shape of an '∩' with one side open corresponding to the first non-display area (IA1) of the substrate (100).

[0058] An encapsulation layer is formed on a substrate (100) to surround a pixel array layer and exposes a first portion of a common power wiring (137) provided in a non-display area (IA) of the substrate (100). The encapsulation layer can prevent oxygen or moisture from penetrating into a light-emitting element (ED) provided in the pixel array layer. An encapsulation layer according to one example may include at least one inorganic film. An encapsulation layer according to another example may include a plurality of inorganic films and an organic film between the plurality of inorganic films.

[0059] The auxiliary wiring (250) is placed on the non-display area (IA) of the substrate (100) so as to overlap with the common power wiring (137) and is electrically connected to the first part of the common power wiring (137). By electrically connecting the auxiliary wiring (250) to the common power wiring (137) on the non-display area (IA) of the substrate (100), the resistance (or line resistance value) of the common power wiring (137) is reduced, thereby preventing image quality defects such as stains caused by voltage changes (or rising) of the common power wiring (137). Additionally, by placing the auxiliary wiring (250) so as to overlap with the common power wiring (137), the resistance (or line resistance value) of the common power wiring (137) can be reduced without increasing the bezel width of the touch screen integrated organic light-emitting display. According to one example, the auxiliary wiring (250) is formed to have a '∩' shape arranged planarly along the second to fourth non-display areas (IA2, IA3, IA4) of the substrate (100) and may overlap with the common power wiring (137) in the second to fourth non-display areas (IA2, IA3, IA4) of the substrate (100).

[0060] A touch screen integrated organic light-emitting display device according to one example of the present application may further include a touch sensor layer disposed on an encapsulation layer.

[0061] The touch sensor layer is disposed on the encapsulation layer and senses a touch according to a touch object. Here, the touch object may include a user's finger or a touch pen.

[0062] A touch sensor layer according to one example may include a touch electrode portion (TEP), a touch routing portion (TRP), and an auxiliary wiring portion (ALP).

[0063] The touch electrode portion (TEP) may include a touch electrode (TE) disposed on a display area (AA) of the substrate (100).

[0064] The touch electrode (TE) may include a plurality of first touch electrodes (TE1) and a plurality of second touch electrodes (TE2).

[0065] A plurality of first touch electrodes (TE1) are arranged on a display area (AA) of a substrate (100) such that they are extended along a first direction (X) and spaced apart from each other along a second direction (Y). These plurality of first touch electrodes (TE1) can be used as touch sensing electrodes (or touch driving electrodes) for sensing the touch position of a touch object.

[0066] Each of the plurality of first touch electrodes (TE1) according to one example may include a plurality of first electrode patterns (151A) and a plurality of bridge patterns (153).

[0067] Each of the plurality of first electrode patterns (151a) is placed on the display area (AA) of the substrate (100) so as to be spaced apart from each other along the first direction (X).

[0068] Each of the plurality of bridge patterns (153) is placed on the display area (AA) of the substrate (100) so as to be spaced apart from each other along the first direction (X) and electrically connects two first electrode patterns (151a) adjacent to each other along the first direction (X). Each of the plurality of bridge patterns (153) is placed to overlap with the two first electrode patterns (151a) adjacent to each other along the first direction (X), thereby preventing the first touch electrode (TE1) and the second touch electrode (TE2) from being shorted to each other in the intersection area.

[0069] One side of each of the plurality of bridge patterns (153) is electrically connected to the first electrode pattern (151a) placed on one side of two first electrode patterns (151a) adjacent to each other along the first direction (X), and the other side of each of the plurality of bridge patterns (153) is electrically connected to the first electrode pattern (151a) placed on the other side of two first electrode patterns (151a) adjacent to each other along the first direction (X). Each of the plurality of bridge patterns (153) according to one example may be formed in a straight line shape, but is not limited thereto and may have various shapes such as a curved shape, a bracket shape, or a mesh shape that can electrically connect two first electrode patterns (151a) adjacent to each other along the first direction (X).

[0070] A plurality of second touch electrodes (TE2) are arranged on a display area (AA) of a substrate (100) such that they are extended along a first direction (X) and spaced apart from each other along a second direction (Y) and are electrically separated from a plurality of first touch electrodes (TE1). These plurality of second touch electrodes (TE2) can be used as touch driving electrodes (or touch sensing electrodes) for sensing the touch position of a touch object.

[0071] Each of the plurality of second touch electrodes (TE2) according to one example may include a plurality of second electrode patterns (151b) and a plurality of connection lines (152).

[0072] Each of the plurality of second electrode patterns (151b) is placed on the display area (AA) of the substrate (100) so as to be spaced apart from each other along the second direction (Y).

[0073] Each of the plurality of connection lines (152) is positioned between two adjacent second electrode patterns (151b) along the second direction (Y) to electrically connect the two adjacent second electrode patterns (151b) along the second direction (Y). Each of the plurality of connection lines (152) may be positioned on the same layer as each of the plurality of second electrode patterns (151b). Accordingly, each of the plurality of connection lines (152) and each of the plurality of second electrode patterns (151b) may be formed as a single body. Each of these plurality of connection lines (152) is positioned to intersect each of the plurality of bridge patterns (153).

[0074] Meanwhile, a plurality of bridge patterns (153) of the first touch electrode (TE1) can be changed to a plurality of connection lines (152) of the second touch electrode (TE2). Also, a plurality of connection lines (152) of the second touch electrode (TE2) can be changed to a plurality of bridge patterns (153) of the first touch electrode (TE1).

[0075] A touch sensor layer according to one example may include a first touch electrode layer having a bridge pattern (153), a first touch insulating film (156) disposed on the first touch electrode layer, and a second touch electrode layer having first touch electrodes (TE1) and second touch electrodes (TE2) disposed on the first touch insulating film (156). As another example, the touch sensor layer may include a first touch electrode layer having first touch electrodes (TE1) and second touch electrodes (TE2), a first touch insulating film (156) disposed on the first touch electrode layer, and a second touch electrode layer having a bridge pattern (153) disposed on the first touch insulating film (156).

[0076] The first touch insulating film (156) includes a bridge contact hole (155) provided in the overlapping area of ​​the first electrode pattern (151a) and the bridge pattern (153). Accordingly, each of the plurality of bridge patterns (153) is electrically connected to one side and the other side of the corresponding first electrode pattern (151a) through the bridge contact hole (155) provided in the first touch insulating film (156), thereby electrically connecting two first electrode patterns (151a) adjacent to each other along the first direction (X).

[0077] According to one example, each of the plurality of first touch electrodes (TE1) and the plurality of second touch electrodes (TE2) may include a mesh structure formed by intersecting metal lines having very thin line widths. Here, the metal lines may have a single-layer or multi-layer structure made of a conductive material such as molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Ti), titanium / aluminum / titanium (Ti / Al / Ti), or molybdenum / aluminum / molybdenum (Mo / Al / Mo).

[0078] Each of the plurality of first electrode patterns (151a) and the plurality of second electrode patterns (151b) according to one example may have a polygonal shape in planar form, for example, a rhombus shape. In this case, each of the electrode patterns (151a, 151b) arranged along the edge portion of the display area (AA) may have a triangular shape. Each of these plurality of first electrode patterns (151a) and the plurality of second electrode patterns (151b) may be formed simultaneously by a process of forming mesh-shaped metal lines that intersect each other on an encapsulation layer, and a process of cutting metal lines formed on a pre-set touch electrode boundary area on the display area (AA) to form the plurality of first electrode patterns (151a), the plurality of second electrode patterns (151b), and the plurality of connecting lines (152).

[0079] A touch screen integrated organic light-emitting display device according to the present specification senses a touch by utilizing mutual capacitance between a first touch electrode (TE1) and a second touch electrode (TE2), wherein the mutual capacitance is mostly formed at the outer portions of each of the first touch electrode (TE1) and the second touch electrode (TE2) that are adjacent to each other with a touch boundary region in between. Accordingly, the present application can increase the mutual capacitance formed in the touch boundary region (or sensing region) between the first touch electrode (TE1) and the second touch electrode (TE2) by increasing the outer portion area (or length) of each of the first touch electrode (TE1) and the second touch electrode (TE2) by forming the cutting portions of the metal lines located at the outer portions of each of the first touch electrode (TE1) and the second touch electrode (TE2) in a protruding shape, thereby improving the touch sensing sensitivity.

[0080] A touch routing unit (TRP) is provided in a non-display area (IA) of a substrate (100) and is electrically connected to a touch electrode (TE) provided in a touch sensor layer. A touch routing unit (TRP) according to one example may include a plurality of first touch routing lines (TRL1) and a plurality of second touch routing lines (TRL2).

[0081] Each of the plurality of first touch routing lines (TRL1) can be connected one-to-one with a plurality of first electrodes (TE1) provided on the touch sensor layer. Each of the plurality of first touch routing lines (TRL1) can be arranged across the other side of the first non-display area (IA1) of the substrate (100) and the fourth non-display area (IA4) (or the third non-display area (IA3)). In one example, one end of each of the plurality of first touch routing lines (TRL1) can be connected one-to-one with a plurality of first electrodes (TE1) in the fourth non-display area (IA4) (or the third non-display area (IA3)) of the substrate (100).

[0082] Each of the plurality of second touch routing lines (TRL2) can be connected one-to-one with a plurality of second electrodes (TE2) provided on the touch sensor layer. Each of the plurality of second touch routing lines (TRL2) can be arranged across one side of the first non-display area (IA1) of the substrate (100) and the second non-display area (IA2) and the third non-display area (IA3) (or the fourth non-display area (IA4)). In one example, one end of each of the plurality of second touch routing lines (TRL2) can be connected one-to-one with a plurality of second electrodes (TE2) in the second non-display area (IA2) of the substrate (100).

[0083] The auxiliary wiring section (ALP) includes an auxiliary wiring (250). The auxiliary wiring (250) may be formed from the same material as the touch sensor layer. The auxiliary wiring (250) provided in the auxiliary wiring section (ALP) may be formed together with the touch sensor layer without any additional separate process. The manufacturing process of the touch sensor layer may include a deposition process for forming a conductive material on the entire surface of the substrate (100) and a patterning process for patterning the deposited conductive material into a plurality of first touch electrodes (TE1) and a plurality of second touch electrodes (TE2). In the patterning process of the manufacturing process of the touch sensor layer, the auxiliary wiring (250) is formed by leaving the conductive material deposited on the non-display area (IA) of the substrate (100) that overlaps with the common power wiring (137) without removing it. Accordingly, the present application can form an auxiliary wiring (250) for reducing the resistance of the common power wiring (137) without a separate additional deposition process and patterning process by utilizing it as an auxiliary wiring (250) for reducing the resistance of the common power wiring (137) without removing the conductive material that is removed by the patterning process of the touch sensor layer.

[0084] According to one example, the auxiliary wiring (250) is formed to overlap with the common power wiring (137) arranged along the second to fourth non-display areas (IA2, IA3, IA4) of the substrate (100) and can be electrically connected to the common power wiring (137).

[0085] According to one example, the auxiliary wiring (250) may have a '∩' shape arranged planarly along the second to fourth non-display areas (IA2, IA3, IA4) of the substrate (100). The common power wiring (137) may be electrically connected to the entire area of ​​the auxiliary wiring (250), but is not necessarily limited thereto, and may be electrically connected to each of a plurality of contact areas set at regular intervals along the length direction of the auxiliary wiring (250).

[0086] According to another example, auxiliary wiring (250) may be formed at regular intervals on the second to fourth non-display areas (IA2, IA3, IA4) so ​​as to overlap with the common power wiring (137) and may be electrically connected to the common power wiring (137). In this case, the auxiliary wiring (250) according to another example may have a dotted line shape arranged planarly along the second to fourth non-display areas (IA2, IA3, IA4).

[0087] A touch screen integrated organic light-emitting display device according to one example of the present application may further include a pad portion (PP), a gate driving circuit (200), a driving integrated circuit (300), a flexible circuit cable (500), and a touch driving circuit (600).

[0088] The pad portion (PP) may include a plurality of pads provided in a non-display area (IA) of the substrate (100). According to one example, the pad portion (PP) may include a plurality of common power supply pads, a plurality of data input pads, a plurality of power supply pads, a plurality of control signal input pads, and a plurality of touch driving pads provided in a first non-display area (IA1) of the substrate (100).

[0089] A gate driving circuit (200) is provided in a third non-display area (IA3) and / or a fourth non-display area (IA4) of a substrate (100) and is connected one-to-one with scan lines (SL) provided in a display area (AA). The gate driving circuit (200) is integrated in the third non-display area (IA3) and / or the fourth non-display area (IA4) of the substrate (100) together with the manufacturing process of the pixel array layer, i.e., the manufacturing process of the thin-film transistor. This gate driving circuit (200) drives each of the plurality of scan lines (SL) in a predetermined order by generating a scan signal based on a gate control signal supplied from a driving integrated circuit (300) and outputting it in a predetermined order. A gate driving circuit (200) according to one example may include a shift register.

[0090] Meanwhile, a plurality of first touch routing lines (TRL1) are positioned between the touch electrode portion (TEP) and the auxiliary wiring portion (ALP) so as to overlap with the gate driving circuit (200) in the fourth non-display area (IA4), thereby minimizing the increase in the bezel width in the fourth non-display area (IA4) of the substrate (100) due to the positioning area of ​​the plurality of first touch routing lines (TRL1). Similarly, a plurality of second touch routing lines (TRL2) are positioned between the touch electrode portion (TEP) and the auxiliary wiring portion (ALP) so as to overlap with the gate driving circuit (200) in the third non-display area (IA3) of the substrate (100), thereby minimizing the increase in the bezel width in the third non-display area (IA3) of the substrate (100) due to the positioning area of ​​the plurality of second touch routing lines (TRL2).

[0091] The driving integrated circuit (300) is mounted in a chip mounting area defined in the first non-display area (IA1) of the substrate (100) through a chip mounting (or bonding) process. The input terminals of the driving integrated circuit (300) are electrically connected to a pad section (PP), and the input terminals of the driving integrated circuit (300) are electrically connected to a plurality of data lines (DL) and a plurality of pixel driving power lines (PL) provided in the display area (AA). The driving integrated circuit (300) receives various power, timing synchronization signals, and digital image data input from the display driving circuit section (or host circuit) through the pad section (PP), generates a gate control signal according to the timing synchronization signal to control the driving of the gate driving circuit (200), and at the same time converts the digital image data into an analog pixel data voltage and supplies it to the corresponding data line (DL).

[0092] The flexible circuit cable (500) is attached to the pad portion (PP). The flexible circuit cable (500) electrically connects the display driving circuit portion and the pad portion (PP), and electrically connects the pad portion (PP) and the touch driving circuit (600).

[0093] A touch driving circuit (600) is mounted on a flexible circuit cable (500) through a chip mounting (or bonding) process. The touch driving circuit (600) is electrically connected to the other end of each of a plurality of first touch routing lines (TRL1) and the other end of each of a plurality of second touch routing lines (TRL2) through a plurality of touch driving pads provided in a pad portion (PP). In response to a touch synchronization signal provided from a host circuit, the touch driving circuit (600) supplies a touch driving pulse to each of a plurality of second touch electrodes (TE2) through the pad portion (PP) and the plurality of second touch routing lines (TRL2), senses a change in capacitance between the first touch electrode (TE1) and the second touch electrode (TE2) through the pad portion (PP) and the plurality of first touch routing lines (TRL1) to generate touch raw data, and provides the generated touch raw data to the host circuit. The host circuit calculates touch location information for a touch object based on touch raw data provided from the touch driving circuit (600) during the touch report period, and executes an application associated with the calculated touch location information.

[0094] Optionally, the touch driving circuit (600) may be embedded in the driving integrated circuit (300), in which case the other end of each of the plurality of first touch routing lines (TRL1) and the plurality of second touch routing lines (TRL2) is not connected to the pad portion (PP) but is electrically connected to the driving integrated circuit (300). The driving integrated circuit (300) can supply a touch driving pulse to each of the plurality of second touch electrodes (TE2) through the plurality of second touch routing lines (TRL2) in response to a touch synchronization signal provided from the host circuit, sense a change in capacitance between the first touch electrode (TE1) and the second touch electrode (TE2) through the plurality of first touch routing lines (TRL1) to generate touch raw data, and provide the generated touch raw data to the host circuit through the pad portion (PP).

[0095] A touch screen integrated organic light-emitting display device according to one example of the present specification may further include a data distribution circuit (400) for reducing the circuit size of a driving integrated circuit (300).

[0096] The data distribution circuit (400) sequentially distributes data voltages input from the driving integrated circuit (300) for each time division interval of one horizontal interval to n data lines corresponding to the number of n time division intervals (n is a natural number greater than or equal to 2) during one horizontal interval. The data distribution circuit (400) according to one example includes a plurality of demultiplexing circuits.

[0097] Each of the plurality of demultiplexing circuits may include one input terminal connected to an output channel of a driving integrated circuit (300), first to n control terminals that individually receive first to third time-division control signals from the driving integrated circuit (300), and first to n output terminals connected to n data lines. Here, assuming that n is 3 and that the 1 horizontal period includes the 1st to 3rd time division intervals, each of the plurality of demultiplexing circuits can supply a 1st data voltage supplied from the driving integrated circuit (300) to the 3i-2 (i is a natural number) data line in response to the 1st time division control signal for each 1st time division interval of the horizontal period, supply a 2nd data voltage supplied from the driving integrated circuit (300) to the 3i-1 data line in response to the 2nd time division control signal for each 2nd time division interval of the horizontal period, and supply a 3rd data voltage supplied from the driving integrated circuit (300) to the 3i data line in response to the 3rd time division control signal for each 3rd time division interval of the horizontal period.

[0098] FIG. 5 is a cross-sectional view showing one embodiment of an organic light-emitting display device cut along the cutting line I-I' of FIG. 2.

[0099] Referring to FIG. 5, the substrate (100) may include a display area (AA) and a non-display area (IA) around the display area (AA). On the display area (AA) of the substrate, there is an organic light-emitting element (130) comprising a pixel electrode (131), a common electrode (135) disposed above the pixel electrode (131), and an organic light-emitting layer (133) disposed between the pixel electrode (131) and the common electrode (135).

[0100] A common power wiring (137) connected to a common electrode (135) may be disposed in the non-display area (IA) of the substrate. According to one example, the common power wiring (137) has a constant line width and is disposed along the second to fourth non-display areas (IA2, IA3, IA4) adjacent to the non-display area (IA) of the substrate (100), and surrounds the remaining portion excluding a part of the display area (AA) adjacent to the first non-display area (IA1) of the substrate (100).

[0101] The encapsulation layer (140) may include a contact hole (140a) that covers the organic light-emitting element (130) and exposes a portion of the upper surface of the common power wiring (137). The encapsulation layer (140) may prevent oxygen or moisture from penetrating into the organic light-emitting element (130) placed in the display area (AA). In one example, the encapsulation layer (140) may include at least one inorganic film. In another example, the encapsulation layer (140) may include a plurality of inorganic films and an organic film between the plurality of inorganic films.

[0102] It may include a touch sensor layer (150) disposed on the encapsulation layer (140) and having a plurality of touch electrodes (TE). An auxiliary wiring (250) may be disposed on the encapsulation layer (140) in overlap with a common power wiring (137). The auxiliary wiring (250) is electrically connected to the common power wiring (137) through a contact hole (140a) formed in the encapsulation layer (140).

[0103] A plurality of touch electrodes (TE) may include a plurality of first touch electrodes (TE1) and a plurality of second touch electrodes (TE2). A bridge pattern (153) is disposed between the encapsulation layer (140) and the plurality of first touch electrodes (TE1) and can electrically connect the plurality of first touch electrodes (TE1). That is, each of the plurality of first electrode patterns (151a) is disposed on a display area (AA) of the substrate (100) so as to be spaced apart from each other along a first direction (X).

[0104] Each of the plurality of bridge patterns (153) is placed on the display area (AA) of the substrate (100) so as to be spaced apart from each other along the first direction (X) and electrically connects two first electrode patterns (151a) adjacent to each other along the first direction (X). Each of the plurality of bridge patterns (153) is placed so as to overlap between two first electrode patterns (151a) adjacent to each other along the first direction (X), thereby preventing the first touch electrode (TE1) and the second touch electrode (TE2) from being short-circuited to each other in the intersection area.

[0105] The auxiliary wiring (250) is placed on the same layer as the bridge pattern (153) and can be formed of the same material as the bridge pattern (153). The auxiliary wiring (250) formed on the same layer as the bridge pattern (153) can be formed together with the bridge pattern (153) without a separate additional process.

[0106] A thin-film transistor (TFT) may be provided in the display area (AA) and positioned below the organic light-emitting diode (130) and electrically connected to the organic light-emitting diode (130). The bridge pattern (153) may be formed of the same material as the source and drain electrodes (106, 108) of the thin-film transistor (TFT). For example, the source and drain electrodes (106, 108) may have a single-layer or multi-layer structure made of a conductive material such as molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Ti), titanium / aluminum / titanium (Ti / Al / Ti), or molybdenum / aluminum / molybdenum (Mo / Al / Mo).

[0107] A touch buffer film (154) may be formed on the upper part of the encapsulation layer (140) and on the lower part of the bridge pattern (153), in contact with the encapsulation layer (140). The touch buffer film (154) serves to prevent damage to the electrode of the pad portion exposed to the outside when forming the bridge pattern (153). The touch buffer film (154) may be formed of an inorganic material, for example, silicon oxide (SiOx) or silicon nitride (SiNx), but is not limited thereto, and may also be formed of an organic material. If the electrode of the pad portion is protected by an insulating layer other than the touch buffer film (154), the touch buffer film (154) may not be formed.

[0108] A first touch insulating film (156) may be disposed between the bridge pattern (153) and the plurality of touch electrodes. The first touch insulating film (156) is formed on a touch buffer film (154) to surround the plurality of bridge patterns (153). The first touch insulating film (156) includes bridge contact holes (155) for exposing one side and the other side of each of the plurality of bridge patterns (153). The first touch insulating film (156) may be formed of an inorganic material, for example, silicon oxide (SiOx) or silicon nitride (SiNx).

[0109] A second touch insulating film (158) covering the touch sensor layer (150) is formed on the upper part of the touch sensor layer (150). The second touch insulating film (158) may be made of an inorganic material, for example, silicon oxide or silicon nitride.

[0110] Common power wiring Add auxiliary wiring width 270㎛ 540㎛ length 136mm 136mm Voltage rise 1.257V 0.421V

[0111] Table 1 above is a table showing the change in the voltage rise of the common voltage according to the reduction in resistance of the common power wiring (137) when auxiliary wiring (250) is added. As described above, when auxiliary wiring (250) is applied, it can be seen that the voltage rise of the common power wiring (137) is reduced by about 65% compared to when auxiliary wiring is not applied. That is, as the resistance of the common power wiring (137) is reduced, image quality defects such as stains caused by voltage changes in the common power wiring (137) can be reduced.

[0112] FIG. 6 is a cross-sectional view showing another embodiment of an organic light-emitting display device cut along the cutting line I-I' of FIG. 2.

[0113] Referring to FIG. 6, the substrate (100) may include a display area (AA) and a non-display area (IA) around the display area (AA). On the display area (AA) of the substrate, there is an organic light-emitting element (130) comprising a pixel electrode (131), a common electrode (135) disposed above the pixel electrode (131), and an organic light-emitting layer (133) disposed between the pixel electrode (131) and the common electrode (135). A thin-film transistor (TFT) is disposed below the organic light-emitting element (130) and is electrically connected to the organic light-emitting element (130).

[0114] A common power wiring (137) connected to a common electrode (135) may be disposed in a non-display area (IA) of the substrate (100). The encapsulation layer (140) may include a contact hole (140a) that covers the organic light-emitting element (130) and exposes a portion of the upper surface of the common power wiring (137). The encapsulation layer (140) may prevent oxygen or moisture from penetrating into the organic light-emitting element (130) disposed in the display area (AA).

[0115] It may include a touch sensor layer (150) disposed on the encapsulation layer (140) and having a plurality of touch electrodes. A plurality of auxiliary wirings (250) may be disposed on the encapsulation layer (140) in overlap with a common power wiring (137). The auxiliary wiring (250) may include a first auxiliary wiring (250-1) and a second auxiliary wiring (250-2).

[0116] A plurality of touch electrodes (TE) may include a plurality of first touch electrodes (TE1) and a plurality of second touch electrodes (TE2). A bridge pattern (153) is disposed between the encapsulation layer (140) and the plurality of first touch electrodes (TE1) and can electrically connect the plurality of first touch electrodes (TE1). That is, each of the plurality of first electrode patterns (151) is disposed on a display area (AA) of the substrate (100) so as to be spaced apart from each other along a first direction (X).

[0117] Each of the plurality of bridge patterns (153) is placed on the display area (AA) of the substrate (100) so as to be spaced apart from each other along the first direction (X) and electrically connects two first electrode patterns (151) adjacent to each other along the first direction (X). Each of the plurality of bridge patterns (153) is placed so as to overlap with the two first electrode patterns (151) adjacent to each other along the first direction (X), thereby preventing the first touch electrode (TE1) and the second touch electrode (TE2) from being short-circuited to each other in the intersection area.

[0118] The first auxiliary wiring (250-1) is placed on the same layer as the bridge pattern (153) and can be formed of the same material as the bridge pattern (153). The bridge pattern (153) can be made of the same material as the source and drain electrodes (106, 108) of the thin-film transistor (TFT) in the display area (AA). The first auxiliary wiring (250-1) formed on the same layer as the bridge pattern (153) can be formed together with the bridge pattern (153) without a separate additional process.

[0119] The second auxiliary wiring (250-2) is placed on the same layer as the touch electrode (TE) and can be formed of the same material as the touch electrode (TE). The second auxiliary wiring (250-2) formed on the same layer as the touch electrode (TE) can be formed together with the touch electrode (TE) without any additional separate process. The touch electrode (TE) can be formed of the same material as the bridge pattern (153), but is not limited thereto and can be made of a different metal material than the bridge pattern (153).

[0120] A first touch insulating film (156) is disposed between the bridge pattern (153) and the touch electrode (TE). The first auxiliary wiring (250-1) and the second auxiliary wiring (250-2) are electrically connected through a touch contact hole (156a) formed in the first touch insulating film (156). A second touch insulating film (158) may be disposed on the upper side of the touch electrode (TE) so that the touch sensor layer (150) is not exposed to the outside.

[0121] An organic light-emitting display device according to an embodiment of the present specification may further include an adhesive layer (160), a barrier film (170), an optical adhesive member (180), and a light path control layer (190).

[0122] An adhesive layer (160) is formed on a substrate (100) to cover a touch sensor layer (150). The adhesive layer (160) may be made of a thermocurable, photocurable, or natural-curable adhesive.

[0123] A barrier film (170) is attached to an adhesive layer (160). The barrier film (170) is intended to primarily prevent moisture or oxygen penetration and may be made of a material with low moisture permeability.

[0124] An optical adhesive member (180) is formed on a barrier film (170). The optical adhesive member (180) may be a transparent adhesive resin layer or a transparent adhesive resin film.

[0125] The optical path control layer (190) controls the path of incident light. The optical path control layer (190) according to one example may include a plurality of refractive layers. The plurality of refractive layers may each have different refractive indices. For example, the optical path control layer (190) according to one example may have a structure in which a high refractive index layer and a low refractive index layer are alternately stacked. The optical path control layer (190) according to this example changes the path of incident light to minimize the color shift phenomenon according to the viewing angle.

[0126] According to another example, the light path control layer (190) may be a polarization layer. The polarization layer changes external light reflected by thin-film transistors and / or lines, etc. provided in the pixel array layer (120) into a circularly polarized state to improve visibility and contrast ratio.

[0127] An organic light-emitting display device according to one example of the present specification can prevent image quality defects, such as stains caused by voltage changes (or rising) of the common power wiring (137), by reducing the resistance of the common power wiring (137) through an auxiliary wiring (250) disposed in a non-display area (IA) of the substrate (100). Additionally, in an organic light-emitting display device according to one example of the present specification, the resistance (or line resistance value) of the common power wiring (137) can be reduced without increasing the width of the common power wiring (137) or the bezel width, by overlapping the auxiliary wiring (250) and the common power wiring (137).

[0128] Although the embodiments of this specification have been described in detail with reference to the attached drawings, this specification is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical concept. Accordingly, the embodiments disclosed in this specification are intended to explain, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments. The features of each of the various embodiments of the invention may be combined or combined with one another, either partially or wholly, and may be technically interconnected and operated in various ways by those skilled in the art. Furthermore, each embodiment may be implemented independently of one another or together in an associated relationship. The scope of protection of the invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the invention. Explanation of the symbols

[0129] 100: Substrate 200: Gate driving circuit 300: Direct driving circuit 400: Data distribution circuit 600: Touch driving circuit 131: Anode electrode 133: Organic light-emitting layer 135: Cathode electrode 140: Bag layer 150: Touch sensor layer 250: Auxiliary wiring 250-1: 1st Auxiliary Wiring 250-2: Second Auxiliary Wiring

Claims

Claim 1 An organic light-emitting display device comprising: a substrate including a display area and a non-display area surrounding the display area; an organic light-emitting element disposed on the display area of ​​the substrate; a common power wiring located in the non-display area of ​​the substrate and connected to the organic light-emitting element; an encapsulation layer including a contact hole covering the organic light-emitting element and exposing a portion of the upper surface of the common power wiring; a plurality of touch electrodes disposed on the encapsulation layer and comprising a plurality of first touch electrodes and a plurality of second touch electrodes; an auxiliary wiring disposed on the encapsulation layer, overlapping with the common power wiring and electrically connected to the common power wiring through the contact hole; and a bridge pattern disposed between the encapsulation layer and the plurality of first touch electrodes and electrically connecting the plurality of first touch electrodes, wherein at least a portion of the auxiliary wiring is disposed on the same layer as the bridge pattern. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 An organic light-emitting display device according to claim 1, further comprising an insulating layer between the auxiliary wiring and the encapsulation layer. Claim 7 In claim 1, the auxiliary wiring is an organic light-emitting display device made of the same material as the bridge pattern. Claim 8 An organic light-emitting display device according to claim 1, further comprising a thin-film transistor located below the organic light-emitting element and electrically connected to the organic light-emitting element. Claim 9 In claim 8, the auxiliary wiring comprises an organic light-emitting display device including a first auxiliary wiring and a second auxiliary wiring. Claim 10 An organic light-emitting display device according to claim 9, wherein the first auxiliary wiring is disposed on the same layer as the bridge pattern and the second auxiliary wiring is disposed on the same layer as the plurality of touch electrodes. Claim 11 An organic light-emitting display device according to claim 10, wherein a first touch insulating film is disposed between the bridge pattern and the plurality of touch electrodes. Claim 12 In claim 11, the first auxiliary wiring is an organic light-emitting display device electrically connected to the second auxiliary wiring. Claim 13 delete Claim 14 delete Claim 15 An organic light-emitting display device according to claim 10, wherein the first auxiliary wiring is made of the same material as the bridge pattern and the second auxiliary wiring is made of the same material as the plurality of touch electrodes. Claim 16 In claim 10, the bridge pattern is an organic light-emitting display device made of the same material as the source and drain electrodes of the thin-film transistor. Claim 17 In claim 10, the bridge pattern is an organic light-emitting display device made of the same material as the plurality of touch electrodes. Claim 18 An organic light-emitting display device according to claim 11, further comprising a second touch insulating film on top of the plurality of touch electrodes. Claim 19 An organic light-emitting display device according to claim 18, further comprising a barrier film on top of the second touch insulating film. Claim 20 An organic light-emitting display device according to claim 18, further comprising a light path control layer on top of the second touch insulating film.

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