Touch Display Apparatus

Abstract

The present invention relates to a touch display device. The touch display device may include touch electrodes positioned side by side on an encapsulation unit covering light-emitting elements. An auxiliary line may be positioned on the encapsulation unit, crossing a display area where the light-emitting elements are located. The auxiliary line may be electrically connected to a power supply voltage line located outside the display area. Each light-emitting element may include a first light-emitting electrode, a light-emitting layer, and a second light-emitting electrode stacked in sequence on a light-emitting area defined by a bank insulating film. The second light-emitting electrode of each light-emitting element may be electrically connected to the auxiliary line on the bank insulating film. Accordingly, a deviation in brightness caused by voltage drop can be prevented in the touch display device.

Description

Technology Field

[0001] The present invention relates to a touch display device in which touch electrodes are positioned on an encapsulation unit covering light-emitting elements. Background Technology

[0002] Generally, a display device provides an image to a user. For example, the display device includes a plurality of pixel regions. Each pixel region can implement a specific color. For example, a light-emitting element may be located within each pixel region. The light-emitting element may emit light that represents a specific color. For example, the light-emitting element may include a first light-emitting electrode, a light-emitting layer, and a second light-emitting electrode stacked in sequence on a device substrate.

[0003] The display device may perform a specific program or apply a specific signal upon touch by a user and / or a tool. For example, the display device may be a touch display device including a touch sensor. The touch sensor may be located on an encapsulation unit covering the light-emitting elements. For example, the touch sensor may include touch electrodes located side by side on the encapsulation unit.

[0004] In the touch display device, a power supply voltage supply line that supplies power voltage to the light-emitting elements may be located outside the display area where the light-emitting elements are located. Accordingly, in the touch display device, light emitted by the light-emitting elements located in the center of the display area due to voltage drop may have a different brightness than the light emitted by the light-emitting elements located at the edge of the display area. The problem to be solved

[0005] The problem that the present invention aims to solve is to provide a touch display device capable of preventing brightness deviation caused by voltage drop.

[0006] The problems that the present invention aims to solve are not limited to those mentioned above. Problems not mentioned herein will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0007] A touch display device according to the technical concept of the present invention for achieving the above-mentioned problem includes a device substrate. The device substrate includes a display area and a bezel area. A light-emitting element is located on the display area of ​​the device substrate. The light-emitting element includes a first light-emitting electrode, a light-emitting layer, and a second light-emitting electrode stacked in sequence. A first dam is located on the bezel area of ​​the device substrate. The first dam surrounds the display area. An encapsulation unit covering the light-emitting element includes an organic encapsulation layer. The organic encapsulation layer is located on the area defined by the first dam. A power supply voltage line is located on the outer side of the first dam. The power supply voltage line extends along the edge of the display area. A touch sensor is located on the encapsulation unit. The touch sensor includes touch electrodes. An auxiliary line electrically connected to the power supply voltage line extends onto the encapsulation unit. The second light-emitting electrode is electrically connected to the auxiliary electrode within the display area.

[0008] The power supply voltage supply line may include a first supply line and a second supply line. The second supply line may be located on the first supply line. The second supply line may include the same material as the touch electrodes.

[0009] The auxiliary line may include auxiliary electrodes. The auxiliary electrodes may be located between the touch electrodes. The auxiliary electrodes may include the same material as the touch electrodes.

[0010] Auxiliary electrodes can be located on the same layer as the touch electrodes.

[0011] A touch sensor may include touch bridges. Touch bridges may electrically connect touch electrodes. An auxiliary line may include auxiliary bridges. Auxiliary bridges may electrically connect auxiliary electrodes. Touch bridges may be located on the same layer as the touch electrodes. Auxiliary bridges may be located on a different layer from the auxiliary electrodes.

[0012] Each auxiliary bridge can intersect with one of the above touch bridges.

[0013] Touch pads may be located on the bezel area of ​​the device substrate. The touch pads may be spaced apart from the encapsulation unit. Each touch electrode may be electrically connected to the corresponding touch pads through one of the touch routing lines. The touch routing lines may extend along the surface of the encapsulation unit. A connecting electrode may be located between the power supply line and the auxiliary line. The connecting electrode may intersect the touch routing lines. The connecting electrode may be located on a different layer from the touch routing lines.

[0014] The connecting electrode may contain the same material as the touch bridges.

[0015] Each touch routing line may include a first routing line and a second routing line. The first routing line may include the same material as the touch bridges. The second routing line may include the same material as the touch electrodes. The first routing line may be spaced apart from the connecting electrode. The second routing line may be electrically connected to the first routing line on the outside of the connecting electrode. A dummy line may be electrically connected to the connecting electrode. The dummy line may surround the display area. The dummy line may include the same material as the connecting electrode.

[0016] A second dam may be located on the outer side of the first dam. The second dam may be extended parallel to the first dam. An auxiliary line may be electrically connected to a power voltage supply line between the first dam and the second dam.

[0017] An overcoat layer may be located between the display area of ​​the device substrate and the light-emitting element. A bank insulating film may be located on the overcoat layer. The bank insulating film may cover the edge of the first light-emitting electrode. An intermediate electrode electrically connected to a power supply voltage line may extend between the overcoat layer and the bank insulating film. The second light-emitting electrode may penetrate the bank insulating film and be electrically connected to the intermediate electrode.

[0018] The bank insulating film can define a light-emitting region. The first light-emitting electrode, the light-emitting layer, and the second light-emitting electrode of the light-emitting element can be stacked on the light-emitting region. A spacer can be located on the bank insulating film. The second light-emitting electrode can extend onto the spacer and be electrically connected to an auxiliary line.

[0019] A conductive pattern may be located on the upper surface of the spacer facing the device substrate. The second light-emitting electrode may be electrically connected to the conductive pattern. Effects of the invention

[0020] A touch display device according to the technical concept of the present invention may include an encapsulation unit covering light-emitting elements, touch electrodes located on the encapsulation unit, and an auxiliary line crossing between the touch electrodes. The auxiliary line may be electrically connected to a power supply voltage line outside a display area where the light-emitting elements are located. A second light-emitting electrode of each light-emitting element may be electrically connected to the auxiliary line within the display area. Accordingly, in a touch display device according to the technical concept of the present invention, a variation in brightness caused by voltage drop can be prevented. Therefore, in a touch display device according to the technical concept of the present invention, the quality of the image can be improved. Brief explanation of the drawing

[0021] FIGS. 1 and 2 are schematic drawings illustrating a touch display device according to an embodiment of the present invention. Figure 3 is an enlarged view of the K region of Figure 2. Figure 4 is a drawing showing a cross-section cut along the line I-I' of Figure 2. Figure 5 is a drawing showing a cross-section cut along the line II-II' of Figure 2. Figure 6 is a cross-section taken along the line III-III' of Figure 2. Figure 7 is a cross-section taken along the line IV-IV' of Figure 2. Figure 8 is a drawing showing a cross-section cut along the V-V' line of Figure 3. Figure 9 is a cross-section taken along the line VI-VI' of Figure 3. FIGS. 10 and 11 are drawings showing a touch display device according to another embodiment of the present invention. Specific details for implementing the invention

[0022] Detailed information regarding the above-mentioned objectives, technical configuration, and resulting effects of the present invention will be more clearly understood through the following detailed description with reference to the drawings illustrating embodiments of the present invention. Here, since the embodiments of the present invention are provided to ensure that the technical concept of the present invention is sufficiently conveyed to those skilled in the art, the present invention may be embodied in other forms so as not to be limited to the embodiments described below.

[0023] Additionally, parts indicated by the same reference number throughout the specification refer to the same components, and the length and thickness of layers or regions in the drawings may be exaggerated for convenience. Furthermore, where it is stated that a first component is "on" a second component, this includes not only the case where the first component is located on the upper side in direct contact with the second component, but also the case where a third component is located between the first component and the second component.

[0024] Here, the terms first, second, etc. are used to describe various components and to distinguish one component from another. However, within the scope of the technical concept of the present invention, the first component and the second component may be named arbitrarily for the convenience of those skilled in the art.

[0025] The terms used in the specification of the present invention are used merely to describe specific embodiments and are not intended to limit the invention. For example, a component expressed in the singular includes a plurality of components unless the context clearly implies only the singular. Furthermore, in the specification of the present invention, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0026] And, where described as being 'connected' or 'connected,' it may include being 'connected' or 'connected' through one or more other components located between the two components, unless 'immediately' or 'directly' is used.

[0027] Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the specification of the present invention.

[0028] (Example)

[0029] FIGS. 1 and 2 are schematic drawings of a touch display device according to an embodiment of the present invention. FIG. 3 is an enlarged view of the K region of FIG. 2. FIG. 4 is a cross-sectional view taken along the line I-I' of FIG. 2. FIG. 5 is a cross-sectional view taken along the line II-II' of FIG. 2. FIG. 6 is a cross-sectional view taken along the line III-III' of FIG. 2. FIG. 7 is a cross-sectional view taken along the line IV-IV' of FIG. 2. FIG. 8 is a cross-sectional view taken along the line V-V' of FIG. 3. FIG. 9 is a cross-sectional view taken along the line VI-VI' of FIG. 3.

[0030] Referring to FIGS. 1 through 9, a touch display device according to an embodiment of the present invention may include a device substrate (110). The device substrate (110) may include an insulating material. For example, the device substrate (110) may include glass or plastic. The device substrate (110) may include a display area (AA) and a bezel area (BZ) located outside the display area (AA). For example, the bezel area (BZ) may surround the display area (AA).

[0031] The display area (AA) of the above-described device substrate (110) can implement an image provided to a user. For example, a plurality of pixel areas (PA) may be located within the display area (AA) of the above-described device substrate (110). The pixel areas (PA) may be located side by side in a first direction and a second direction perpendicular to the first direction. As shown in FIG. 3, two pixel areas (PA) adjacent in the first direction may be arranged in an alternating manner. Two pixel areas (PA) adjacent in the second direction may be arranged in an alternating manner. Each pixel area (PA) may implement a color different from that of adjacent pixel areas (PA). For example, a touch display device according to an embodiment of the present invention may have a pentile structure in which a first row in which red pixel areas (R) and blue pixel areas (B) are alternately located and a second row in which green pixel areas (G) are located are repeated in an alternating manner.

[0032] In each pixel area (PA), light exhibiting a specific color may be emitted. For example, within each pixel area (PA), a pixel driving circuit and a light-emitting element (130) electrically connected to the pixel driving circuit may be located.

[0033] As illustrated in FIG. 1, the pixel driving circuit may be connected to one of the gate lines (GL) that apply a gate signal and one of the data lines (DL) that apply a data signal. For example, the pixel driving circuit may generate a driving current corresponding to the data signal according to the gate signal. The driving current generated by the pixel driving circuit may be supplied to the light-emitting element (130) for one frame. For example, the pixel driving circuit may include a switching thin-film transistor (T1), a driving thin-film transistor (T2), and a storage capacitor (Cst).

[0034] The switching thin film transistor (T1) can transmit the data signal to the driving thin film transistor (T2) according to the gate signal. The driving thin film transistor (T2) can generate the driving current. For example, as shown in FIG. 8, the driving thin film transistor (T2) may include a semiconductor pattern (121), a gate insulating film (122), a gate electrode (123), a source electrode (124), and a drain electrode (125).

[0035] The semiconductor pattern (121) may include a semiconductor material. For example, the semiconductor pattern (121) may include at least one of amorphous silicon, polycrystalline silicon, and oxide semiconductor. The semiconductor pattern (121) may include a source region, a drain region, and a channel region. The channel region may be located between the source region and the drain region. The source region and the drain region may have lower resistance than the channel region. For example, the source region and the drain region may include a conductive region of the oxide semiconductor.

[0036] The gate insulating film (122) may be located on the semiconductor pattern (121). For example, the gate insulating film (122) may overlap with the channel region of the semiconductor pattern (121). The source region and the drain region of the semiconductor pattern (121) may be located outside the gate insulating film (122). The gate insulating film (122) may include an insulating material. For example, the gate insulating film (122) may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0037] The gate electrode (123) may be located on the gate insulating film (122). For example, the gate electrode (123) may overlap with the channel region of the semiconductor pattern (121). The gate electrode (123) may be insulated from the semiconductor pattern (121) by the gate insulating film (122). For example, the side of the gate insulating film (122) may be continuous with the side of the semiconductor pattern (123). The gate electrode (123) may include a conductive material. For example, the gate electrode (123) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or an alloy of these metals. Also, the gate electrode (123) may be composed of a single layer or multiple layers. The channel region of the semiconductor pattern (121) may have electrical conductivity corresponding to the voltage applied to the gate electrode (123).

[0038] The source electrode (124) may include the conductive material. For example, the source electrode (124) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or an alloy of these metals. Also, the source electrode (124) may be composed of a single layer or multiple layers. The source electrode (124) may be insulated from the gate electrode (123). The source electrode (124) may be located on a different layer from the gate electrode (123). For example, an interlayer insulating film (112) covering the gate electrode (123) may be located on the device substrate (110), and the source electrode (124) may be located on the interlayer insulating film (112). The interlayer insulating film (112) may include an insulating material. For example, the interlayer insulating film (112) may include inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN).

[0039] The source electrode (124) may be electrically connected to the source region of the semiconductor pattern (121). For example, the interlayer insulating film (112) may include a source contact hole that partially exposes the source region of the semiconductor pattern (121). The source electrode (124) may come into direct contact with the source region of the semiconductor pattern (121) through the source contact hole.

[0040] The drain electrode (125) may include a conductive material. For example, the drain electrode (125) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or an alloy of these metals. Also, the drain electrode (125) may be composed of a single layer or multiple layers. The drain electrode (125) may be insulated from the gate electrode (123). The drain electrode (125) may be located on a different layer from the gate electrode (123). For example, the drain electrode (125) may be located on the interlayer insulating film (112). The drain electrode (125) may be located on the same layer as the source electrode (124). The drain electrode (125) may include the same material as the source electrode (124). For example, the drain electrode (125) can be formed simultaneously with the source electrode (124).

[0041] The drain electrode (125) may be electrically connected to the drain region of the semiconductor pattern (121). For example, the interlayer insulating film (112) may include a drain contact hole that partially exposes the drain region of the semiconductor pattern (121). The drain electrode (125) may come into direct contact with the drain region of the semiconductor pattern (121) through the drain contact hole.

[0042] The switching thin-film transistor (T1) may have the same structure as the driving thin-film transistor (T2). For example, the switching thin-film transistor (T1) may include a gate electrode electrically connected to the corresponding gate line (GL), a source electrode electrically connected to the corresponding data line (DL), and a drain electrode electrically connected to the gate electrode (123) of the driving thin-film transistor (T2). The source electrode (124) of the driving thin-film transistor (T2) may be connected to a first power supply voltage supply line (VDD) that supplies a positive power supply voltage. The storage capacitor (Cst) may maintain the voltage applied to the gate electrode (123) of the driving thin-film transistor (T2) for one frame. For example, the storage capacitor (Cst) may be connected between the gate electrode (123) and the drain electrode (125) of the driving thin-film transistor (T2).

[0043] The light-emitting element (130) can emit light using the driving current supplied from the pixel driving circuit. For example, the light-emitting element (130) may include a first light-emitting electrode (131), a light-emitting stack (132), and a second light-emitting electrode (133) stacked in order on the element substrate (110).

[0044] The first light-emitting electrode (131) may be electrically connected to the drain electrode (125) of the driving thin-film transistor (T2). For example, the driving current generated by the pixel driving circuit may be supplied to the first light-emitting electrode (131) of the light-emitting element (130). The first light-emitting electrode (131) may include a conductive material. The first light-emitting electrode (131) may include a material having high reflectivity. For example, the first light-emitting electrode (131) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or an alloy of these metals. Also, the first light-emitting electrode (131) may be composed of a single layer or multiple layers. For example, the first light-emitting electrode (131) may have a structure in which a reflective electrode made of metal is positioned between transparent conductive layers made of transparent conductive materials such as ITO and IZO.

[0045] The light-emitting stack (132) can generate light of brightness corresponding to the voltage difference between the first light-emitting electrode (131) and the second light-emitting electrode (133). For example, the light-emitting stack (132) may include an emission material layer (EML) containing a light-emitting material. The light-emitting material may include an organic material, an inorganic material, or a hybrid material. For example, a touch display device according to an embodiment of the present invention may be an organic light-emitting display device containing an organic light-emitting material.

[0046] The light-emitting stack (132) may have a multilayer structure. For example, the light-emitting stack (132) may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (HTL), and an electron injection layer (HIL). The light-emitting stack (132) may include a plurality of light-emitting material layers. For example, the light-emitting stack (132) may include a charge generation layer (CGL) located between a first light-emitting material layer and a second light-emitting material layer. The second light-emitting material layer may include a material different from the first light-emitting material layer.

[0047] The second light-emitting electrode (133) may include a conductive material. The second light-emitting electrode (133) may have a higher transmittance than the first light-emitting electrode (131). For example, the second light-emitting electrode (133) may be a transparent electrode made of a transparent conductive material. The second light-emitting electrode (133) may include a transparent conductive oxide such as ITO, IZO, and AZO. Accordingly, in a touch display device according to an embodiment of the present invention, light generated by the light-emitting stack (132) of each pixel area (PA) may be emitted to the outside through the second light-emitting electrode (133) of the corresponding pixel area (PA).

[0048] A device buffer film (111) may be positioned between the device substrate (110) and the pixel driving circuit of each pixel area (PA). The device buffer film (111) can prevent contamination by the device substrate (110) during the formation process of the pixel driving circuits. The device buffer film (111) may extend onto the non-display area (NA) of the device substrate (110). For example, the upper surface of the device substrate (110) facing the pixel driving circuit of each pixel area (PA) may be completely covered by the device buffer film (111). The device buffer film (111) may include an insulating material. For example, the device buffer film (111) may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The device buffer film (111) may have a multilayer structure. For example, the above-mentioned device buffer film (111) may have a stacked structure of an inorganic insulating film made of silicon oxide (SiO) and an inorganic insulating film made of silicon nitride (SiN). However, it is not limited thereto, and the buffer film (111) may be made only of organic insulating film, or the buffer film (111) may have a multilayer structure in which an organic insulating film and an inorganic insulating film are stacked.

[0049] A planarization film (113) may be positioned between the pixel driving circuit of each pixel area (PA) and the light-emitting element (130). The planarization film (113) may eliminate the step difference caused by the pixel driving circuit of each pixel area (PA). For example, the upper surface of the planarization film (113) facing the element substrate (110) may be a flat plane. The switching thin-film transistor (T1), the driving thin-film transistor (T2), and the storage capacitor (Cst) located within each pixel area (PA) may be covered by the planarization film (113). The planarization film (113) may include an insulating material. The planarization film (113) may include a material different from the interlayer insulating film (112). For example, the planarization film (113) may include an organic insulating material.

[0050] The first light-emitting electrode (131) of each pixel region (PA) can penetrate the planarization film (113) and be electrically connected to the pixel driving circuit of the corresponding pixel region (PA). For example, the planarization film (113) may include pixel contact holes that partially expose the drain electrode (125) of the driving thin-film transistor (T2) located within each pixel region (PA). The first light-emitting electrode (131) of each pixel region (PA) can come into direct contact with the drain electrode (125) of the driving thin-film transistor (T2) located within the corresponding pixel region (PA) through one of the pixel contact holes.

[0051] The first light-emitting electrode (131) of each pixel area (PA) may be insulated from the first light-emitting electrode (131) of an adjacent pixel area (PA). The first light-emitting electrode (131) of each pixel area (PA) may be spaced apart from the first light-emitting electrode (131) of an adjacent pixel area (PA). For example, a bank insulating film (114) may be located between the first light-emitting electrodes (131) of adjacent pixel areas (PA). The bank insulating film (114) may include an insulating material. For example, the bank insulating film (114) may include an organic insulating material. The bank insulating film (114) may cover the edges of the first light-emitting electrode (131) located within each pixel area (PA). The light-emitting stack (132) and the second light-emitting electrode (133) of each pixel area (PA) may be laminated on a portion of the corresponding first light-emitting electrode (131) exposed by the bank insulating film (114). For example, the bank insulating film (114) may define light-emitting regions (BEA, GEA, REA) within each pixel area (PA).

[0052] The light-emitting element (130) of each pixel area (PA) may have the same structure as the light-emitting element (130) of an adjacent pixel area (PA). For example, the light-emitting stack (132) of each pixel area (PA) may be connected to the light-emitting stack (132) of an adjacent pixel area (PA) by extending along the surface of the bank insulating film (114). The light emitted from the light-emitting element (130) of each pixel area (PA) may exhibit the same color as the light emitted from the light-emitting element (130) of an adjacent pixel area (PA). For example, the light-emitting stack (132) of each pixel area (PA) may emit white light. The light-emitting stack (132) of each pixel area (PA) may be formed simultaneously with the light-emitting stack (132) of an adjacent pixel area (PA). Accordingly, in a touch display device according to an embodiment of the present invention, the process of forming the light-emitting stack (132) on each pixel area (PA) may be simplified.

[0053] The voltage applied to the second light-emitting electrode (133) of each pixel area (PA) may be the same as the voltage applied to the second light-emitting electrode (133) of an adjacent pixel area (PA). For example, the second light-emitting electrode (133) of each pixel area (PA) may be electrically connected to a second power supply voltage supply line (VSS) that supplies a negative power supply voltage. Accordingly, in a touch display device according to an embodiment of the present invention, the brightness of light emitted from the light-emitting element (130) of the corresponding pixel area (PA) can be controlled through the data signal applied to each pixel area (PA). The second light-emitting electrode (133) of each pixel area (PA) may be electrically connected to the second light-emitting electrode (133) of an adjacent pixel area (PA). For example, the second light-emitting electrode (133) of each pixel area (PA) may be in direct contact with the second light-emitting electrode (133) of an adjacent pixel area (PA). The second light-emitting electrode (133) of each pixel area (PA) can be formed simultaneously with the second light-emitting electrode (133) of an adjacent pixel area (PA). Accordingly, in a touch display device according to an embodiment of the present invention, the process of forming the second light-emitting electrode (133) on each pixel area (PA) can be simplified.

[0054] The second power supply voltage line (VSS) may be located on the bezel area (BZ) of the device substrate (110). For example, as shown in FIG. 2, the second power supply voltage line (VSS) may extend along the edge of the display area (AA). Accordingly, in the touch display device according to an embodiment of the present invention, noise caused by an external signal can be blocked by the second power supply voltage line (VSS). Therefore, in the touch display device according to an embodiment of the present invention, signal distortion caused by noise from an external signal can be effectively prevented.

[0055] The second power supply voltage line (VSS) may have a multilayer structure. For example, as shown in FIG. 5, the second power supply voltage line (VSS) may have a stacked structure of a first supply line (V1) and a second supply line (V2). The second supply line (V2) may be located on the first supply line (V1). The first supply line (V1) may be formed using a forming process of the pixel driving circuit located within each pixel area (PA). For example, the first supply line (V1) may include the same material as the source electrode (124) and the drain electrode (125) of each pixel area (PA).

[0056] The above device buffer film (111) and the above interlayer insulating film (112) may extend onto the bezel region (BZ) of the device substrate (110). For example, the second power supply voltage line (VSS) may be located on the interlayer insulating film (112). The overcoat layer (113) and the bank insulating film (114) may include an end located between the display region (BZ) of the device substrate (110) and the second power supply voltage line (VSS). Accordingly, in a touch display device according to an embodiment of the present invention, the electrical connection process between the second light-emitting electrode (133) of each light-emitting element (130) and the second power supply voltage line (VSS) can be simplified.

[0057] The second power supply voltage line (VSS) can be electrically connected to the second light-emitting electrode (133) of each light-emitting element (130) through an intermediate electrode (315). For example, the intermediate electrode (315) extends between the overcoat layer (113) and the bank insulating film (114), and the second light-emitting electrode (133) of each light-emitting element (130) can penetrate the bank insulating film (114) and be electrically connected to the intermediate electrode (315). Accordingly, in a touch display device according to an embodiment of the present invention, the disconnection of the second light-emitting electrode (133) due to the step difference caused by the overcoat layer (113) and the bank insulating film (114) can be prevented. Accordingly, in a touch display device according to an embodiment of the present invention, the second power supply voltage supply line (VSS) and the second light-emitting electrode (133) of each light-emitting element (130) can be stably connected.

[0058] The intermediate electrode (315) can be formed using the formation process of the light-emitting elements (130). For example, the intermediate electrode (315) may include the same material as the first light-emitting electrode (310) of each light-emitting element (130). Accordingly, in a touch display device according to an embodiment of the present invention, a negative power supply voltage can be stably supplied to each pixel area (PA) without a decrease in process efficiency.

[0059] An encapsulation unit (140) may be positioned on the light-emitting element (130) of each pixel area (PA). The encapsulation unit (140) may prevent damage to the light-emitting elements (130) by external moisture and / or oxygen. The light-emitting element (130) of each pixel area (PA) may be completely covered by the encapsulation unit (140). For example, the encapsulation unit (140) may extend onto the bezel area (BZ) of the element substrate (110).

[0060] The above-described sealing unit (140) may include at least one inorganic sealing layer (141, 143) and at least one organic sealing layer (142). For example, the sealing unit (140) may have a structure in which at least one organic sealing layer (142) is located between the inorganic sealing layers (141, 143). The top layer of the sealing unit (140) may be the inorganic sealing layer (141, 143). For example, the top surface and side surface of the organic sealing layer (142) may be covered by the inorganic sealing layer (141, 143). Accordingly, in a touch display device according to an embodiment of the present invention, the penetration of external moisture and oxygen can be effectively blocked.

[0061] The inorganic encapsulation layer (141, 143) may include an inorganic insulating material. For example, the inorganic encapsulation layer (141, 143) may include an inorganic insulating material capable of low-temperature deposition, such as silicon nitride (SiN), silicon oxide (SiO), silicon oxynitride (SiON), and aluminum oxide (Al2O3). Accordingly, in a touch display device according to an embodiment of the present invention, damage to the light-emitting stacks (132) caused by the formation process of the inorganic encapsulation layer (141, 143) can be prevented.

[0062] The organic encapsulation layer (142) can relieve stress caused by the inorganic encapsulation layer (141, 143). For example, the organic encapsulation layer (142) may include organic insulating materials such as acrylic resin, epoxy resin, polyimide, polyethylene, and silicon oxycarbon (SiOC). Steps caused by the light-emitting elements (130) can be eliminated by the organic encapsulation layer (142). For example, the upper surface of the organic encapsulation layer (142) facing the element substrate (110) may be a flat plane.

[0063] The organic encapsulation layer (142) may be formed using an ink-jet method. For example, a plurality of dams (106) may be located on the bezel area (NA) of the device substrate (110). The dams (106) may block the flow of the organic encapsulation layer (142). The dams (106) may extend along the edge of the display area (AA). For example, in a touch display device according to an embodiment of the present invention, the organic encapsulation layer (142) may be formed within an area defined by the dams (106). The dams (106) may be formed using a formation process of at least one of the insulating films located between the device substrate (110) and the encapsulation unit (140). For example, the dams (106) may be formed simultaneously with the planarization layer (113). The dam (106) may be located on the interlayer insulating film (112). The dam (106) may contain the same material as the flattening layer (113). For example, the dam (106) may contain an organic insulating material. The thickness of the dam (106) may be the same as the thickness of the flattening layer (112).

[0064] A touch sensor (Cm) may be positioned on the above-mentioned bag unit (140). The touch sensor (Cm) may detect a touch by a user and / or a tool. For example, the touch sensor (Cm) may detect the presence or absence of a touch and the location of the touch through a change in mutual capacitance. As illustrated in FIGS. 2 and 3, the touch sensor (Cm) may include a first touch line (310) and a second touch line (320).

[0065] A touch driving signal may be applied to the first touch line (310). For example, the first touch line (310) may function as a touch driving line. The first touch line (310) may include first touch electrodes (311) and first touch bridges (312). The first touch electrodes (311) may be positioned side by side on the encapsulation unit (140). The first touch bridges (312) may electrically connect the first touch electrodes (311). Each first touch bridge (312) may extend in a first direction. For example, each first touch electrode (311) may be connected to a first touch electrode (311) adjacent in the first direction by one of the first touch bridges (312).

[0066] The first touch electrodes (311) may include a conductive material. The first touch electrodes (311) may include a material having relatively low resistance. For example, the first touch electrodes (311) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or an alloy of these metals. Each first touch electrode (311) may have a single-layer or multi-layer structure. For example, the first touch electrodes (311) may have a triple-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0067] The first touch bridges (312) may include a conductive material. The first touch bridges (312) may include a material having relatively low resistance. For example, the first touch bridges (312) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or an alloy of these metals. The first touch bridges (312) may include the same material as the first touch electrodes (311). Each first touch bridge (312) may have a single-layer or multi-layer structure. For example, the first touch bridges (312) may have a triple-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. The first touch bridges (312) may have the same structure as the first touch electrodes (311). The first touch bridges (312) may be located on the same layer as the first touch electrodes (31). For example, each first touch bridge (312) may be in direct contact with the corresponding first touch electrodes (311).

[0068] The second touch line (320) may include second touch electrodes (321) and second touch bridges (322). The second touch electrodes (321) may be positioned side by side on the encapsulation unit (140). The second touch electrodes (321) may be positioned on the same layer as the first touch electrodes (311). The second touch electrodes (321) may be insulated from the first touch electrodes (311). For example, the second touch electrodes (321) may be positioned between the first touch electrodes (311). The second touch electrodes (321) may have the same shape as the first touch electrodes (311). For example, the first touch electrodes (311) and the second touch electrodes (312) may be arranged alternately on the encapsulation unit (140). Accordingly, in a touch display device according to an embodiment of the present invention, the charge charged by the touch driving signal may be discharged through the second touch line (320). For example, the second touch line (320) may function as a touch sensing line. Thus, a touch display device according to an embodiment of the present invention can detect whether a user and / or tool has touched and the location of the touch using the touch sensor (Cm).

[0069] The second touch electrodes (321) may include a conductive material. The second touch electrodes (321) may include a material having relatively low resistance. For example, the second touch electrodes (321) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or an alloy of these metals. The second touch electrodes (321) may include the same material as the first touch electrodes (311). Each second touch electrode (321) may have a single-layer or multi-layer structure. For example, the second touch electrodes (321) may have a triple-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. The second touch electrodes (321) may have the same structure as the first touch electrodes (311).

[0070] The second touch electrodes (321) may be located on the same layer as the first touch electrodes (311) and the first touch bridges (312). The second touch electrodes (321) may be insulated from the first touch bridges (312). The second touch electrodes (321) may be spaced apart from the first touch bridges (312). For example, the first touch bridges (312) may cross between the second touch electrodes (321).

[0071] The second touch bridges (322) can electrically connect the second touch electrodes (321). Each second touch bridge (322) can extend in a second direction. For example, each second touch electrode (321) can be connected to an adjacent second touch electrode (321) in the second direction by one of the second touch bridges (322). The second direction may be different from the first direction. For example, the second direction may be perpendicular to the first direction. The second touch bridges (322) can cross between the first touch electrodes (311). For example, each second touch bridge (322) may cross one of the first touch bridges (312). The second touch bridges (322) may be insulated from the first touch bridges (312). The second touch bridges (321) may be located on a different layer from the first touch bridges (312). For example, the touch sensor (Cm) includes a touch insulating film (350) located on the second touch bridges (322), and the first touch electrodes (311), the first touch bridges (312), and the second touch electrodes (321) may be located on the touch insulating film (350).

[0072] The touch insulating film (350) may include an insulating material. For example, the touch insulating film (350) may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). However, it is not limited thereto, and the touch insulating film (350) may include an organic insulating material. Alternatively, the touch insulating film (350) may be formed in a structure in which an organic insulating film and an inorganic insulating film are laminated. The touch insulating film (350) may include touch contact holes that partially expose each second touch bridge (322). Each second touch electrode (321) may be connected to the corresponding second touch bridge (322) through one of the touch contact holes.

[0073] The second touch bridges (322) may include a conductive material. The second touch bridges (322) may include a material having relatively low resistance. For example, the second touch bridges (322) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or an alloy of these metals. Each second touch bridge (322) may have a single-layer or multi-layer structure. For example, the second touch bridges (322) may have a triple-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0074] The first touch electrodes (311), the first touch bridges (312), the second touch electrodes (321), and the second touch bridges (322) of the touch sensor (Cm) may be located within the display area (AA) of the device substrate (110). The light-emitting area (BEA, GEA, REA) of each pixel area (PA) may be located between the first touch electrodes (311), the first touch bridges (312), the second touch electrodes (321), and the second touch bridges (322b). The first touch line (310) and the second touch line (320) may be located outside the light-emitting elements (130). For example, the first touch electrodes (311), the first touch bridges (312), the second touch electrodes (321), and the second touch bridges (322) may overlap with the bank insulating film (114). The plane of each first touch electrode (311) and the plane of each second touch electrode (321) may have a mesh shape including openings that overlap with the light-emitting regions (BEA, GEA, REA) of each pixel region (PA). Accordingly, in a touch display device according to an embodiment of the present invention, the accuracy of touch detection using the touch sensor (Cm) is improved, and the reduction in light extraction efficiency by the first touch electrodes (311), the first touch bridges (312), the second touch electrodes (321), and the second touch bridges (322) of the touch sensor (Cm) can be minimized.

[0075] A touch buffer film (200) may be positioned between the above-mentioned encapsulation unit (140) and the above-mentioned touch sensor (Cm). For example, the above-mentioned second touch bridges (322) may be positioned between the above-mentioned touch buffer film (200) and the above-mentioned touch insulating film (350). The above-mentioned touch buffer film (200) may reduce parasitic capacitance occurring between the above-mentioned second light-emitting electrode (133) of each light-emitting element (130) and the above-mentioned touch sensor (Cm). For example, the distance between the above-mentioned first touch line (310) of the above-mentioned touch sensor (Cm) and the above-mentioned second light-emitting electrode (133) of each light-emitting element (130), and the distance between the above-mentioned second touch line (320) of the above-mentioned touch sensor (Cm) and the above-mentioned second light-emitting electrode (133) of each light-emitting element (130) may be increased by the above-mentioned touch buffer film (200). Accordingly, in a touch display device according to an embodiment of the present invention, the accuracy of touch detection by the touch sensor (Cm) can be improved. The touch buffer film (200) may include an insulating material. For example, the touch buffer film (200) may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0076] The second supply line (V2) of the second power supply voltage line (VSS) may include the same material as the touch electrodes (311, 321). The second supply line (V2) may be located on the same layer as the touch electrodes (311, 321). For example, the touch buffer film (200) and the touch insulating film (350) may extend onto the second power supply voltage line (VSS), and the second supply line (V2) may penetrate the touch buffer film (200) and the touch insulating film (350) to be electrically connected to the second power supply voltage line (VSS). The second supply line (V2) may extend parallel to the first supply line (V1). Accordingly, in a touch display device according to an embodiment of the present invention, noise applied to the touch sensor (Cm) by an external signal can be blocked by the second supply line (V2). Therefore, in a touch display device according to an embodiment of the present invention, the accuracy of touch detection can be improved.

[0077] At least one auxiliary line (400) may be located on the above-mentioned encapsulation unit (140). As shown in FIG. 2, the auxiliary line (400) may cross the display area (AA) of the device substrate (110). The auxiliary line (400) may extend along the surface of the encapsulation unit (140). For example, as shown in FIG. 2 and 5, the auxiliary line (400) may be electrically connected to the second power supply voltage line (VSS) on the bezel area (BZ) of the device substrate (110). The auxiliary line (400) may be connected to the second power supply voltage line (VSS) on the outside of the dam (106) located closest to the display area (AA). Accordingly, in a touch display device according to an embodiment of the present invention, the auxiliary electrode (400) can be connected to the second power supply voltage line (VSS) without penetrating the relatively thick organic encapsulation layer (142). Therefore, in a touch display device according to an embodiment of the present invention, the efficiency of the process of electrically connecting the auxiliary electrode (400) to the second power supply voltage line (VSS) can be improved.

[0078] The second power supply voltage line (VSS) may include an area located between the dams (106). For example, the auxiliary line (400) may be electrically connected to the second power supply voltage line (VSS) through voltage contact holes located between the dams (106). Accordingly, in a touch display device according to an embodiment of the present invention, the auxiliary electrode (400) may be electrically connected to the second power supply voltage line (VSS) without increasing the bezel area (BZ).

[0079] The auxiliary line (400) may be located outside the light-emitting regions (BEA, GEA, REA). For example, the auxiliary line (400) may overlap with the bank insulating film (114). Accordingly, in a touch display device according to an embodiment of the present invention, light loss caused by the auxiliary line (400) can be prevented.

[0080] The auxiliary line (400) may include auxiliary electrodes (410) and auxiliary bridges (420). The auxiliary line (400) may cross between the touch electrodes (311, 321). The auxiliary electrodes (410) may include the same material as the touch electrodes (311, 321). For example, the auxiliary electrodes (410) may be located between the touch electrodes (311, 321). Each auxiliary bridge (420) may intersect with one of the first touch bridges (312) and the second touch bridges (322). The auxiliary bridges (420) may be located on a different layer from the auxiliary electrodes (410). For example, each auxiliary bridge (420) may intersect with one of the first touch bridges (312). The auxiliary line (400) may extend in the same direction as the second touch line (320). For example, the auxiliary electrodes (410) may be connected in the second direction by the auxiliary bridges (420). Each auxiliary bridge (420) may extend in the second direction. For example, the auxiliary bridges (420) may be located side by side with the second touch bridges (322). The auxiliary bridges (420) may contain the same material as the second touch bridges (322). The auxiliary bridges (420) may be located on the same layer as the second touch bridges (322). For example, the auxiliary bridges (420) may be located between the touch buffer film (200) and the touch insulating film (350).

[0081] The second light-emitting electrode (133) of each light-emitting element (130) can be electrically connected to the auxiliary line (400) within the display area (AA). For example, as shown in FIGS. 2 and 9, the auxiliary electrode (400) on the bank insulating film (114) can pass through the encapsulation unit (140), the touch buffer film (200), and the touch insulating film (350) to make direct contact with the second light-emitting electrode (133) of each light-emitting element (130). Accordingly, in the touch display device according to the embodiment of the present invention, a negative power supply voltage identical to that of the edge of the display area (AA) can be supplied to the center of the display area (AA). Therefore, in the touch display device according to the embodiment of the present invention, a brightness deviation due to voltage drop can be prevented.

[0082] A spacer (115) may be positioned on the bank insulating film (114). The spacer (115) may include an insulating material. For example, the spacer (115) may include an organic insulating material. The spacer (115) may include the same material as the bank insulating film (114). For example, the spacer (115) may be formed simultaneously with the bank insulating film (114) using a half-tone mask. The organic encapsulation layer (142) may have a relatively thin thickness on the spacer (115). For example, the straight distance between the spacer (115) and the touch insulating film (350) may be smaller than the straight distance between the bank insulating film (114) and the touch insulating film (350). The second light-emitting electrode (133) of each light-emitting element (130) can be extended onto the spacer (115). Accordingly, in a touch display device according to an embodiment of the present invention, the efficiency of the process of electrically connecting the second light-emitting electrode (133) of each light-emitting element (130) to the auxiliary line (400) can be improved. In addition, in a touch display device according to an embodiment of the present invention, the second light-emitting electrode (133) of each light-emitting element (130) can be stably connected to the auxiliary line (400).

[0083] Various signals for implementing an image can be applied to each pixel area (PA) through the bezel area (BZ) of the device substrate (110). For example, the bezel area (BZ) of the device substrate (110) may include a pad area (PD) where display pads (104), touch pads (304), a first power supply pad (804), and a second power supply pad (704) are located. The dam (106) may be located between the display area (AA) and the pad area (PD). For example, the display pads (104), the touch pads (304), the first power supply pad (804), and the second power supply pad (704) may be spaced apart from the encapsulation unit (140). Accordingly, in a touch display device according to an embodiment of the present invention, it is prevented that some of the display pads (104), the touch pads (304), the first power supply voltage pad (804), and the second power supply voltage pad (704) are unintentionally covered by the organic encapsulation layer (142). Therefore, in a touch display device according to an embodiment of the present invention, distortion of the signal transmitted through the display pads (104) and the touch pads (304) can be prevented.

[0084] The gate lines (GL) and / or the data lines (DL) may be electrically connected to the display pads (104). For example, the data signal applied to each pixel area (PA) may be transmitted through one of the display pads (104) and one of the data lines (DL). The first power supply line (VDD) may be electrically connected to the first power supply pad (804). The second power supply pad (704) may be electrically connected to the second power supply line (VSS). The first power supply pad (804), the second power supply pad (704), and the touch pads (304) may be located side by side with the display pads (104). For example, the pad area (PD) may be located on one side of the display area (AA).

[0085] Each touch pad (304) may include a lower pad electrode (304a) and an upper pad electrode (304b) located on the lower pad electrode (304a). The touch pads (304) may be formed using the forming process of the pixel driving circuits, the light-emitting elements (130), and the touch sensor (Cm). For example, the lower pad electrode (304a) may include the same material as the source electrode (124) and the drain electrode (125) of each pixel driving circuit, and the upper pad electrode (304b) may include the same material as the first touch electrodes (311), the first bridge electrodes (312), and the second touch electrodes (322). The display pads (104), the first power supply voltage pad (804), and the second power supply voltage pad (704) may have the same structure as the touch pads (304). For example, each of the display pads (104), the first power supply voltage pad (804), and the second power supply voltage pad (704) may include a lower pad electrode and an upper pad electrode located on the lower pad electrode. For example, the display pads (104), the first power supply voltage pad (804), and the second power supply voltage pad (704) may be formed simultaneously with the touch pads (304).

[0086] The touch pads (304) may be electrically connected to the first touch line (310) and the second touch line (320) through touch routing lines (330). For example, the touch driving signal may be applied to the first touch line (310) through one of the touch pads (304) and one of the touch routing lines (330), and the charge charged by the touch driving signal may be discharged through the second touch line (320), one of the touch routing lines (330), and one of the touch pads (304).

[0087] The touch routing lines (330) may be formed using the forming process of the touch sensor (Cm). For example, each touch routing line (330) may have a stacked structure of a lower routing line (331) containing the same material as the second bridge electrodes (322) and an upper routing line (332) containing the same material as the first bridge electrodes (312). The upper routing line (332) of each touch routing line (330) may be electrically connected to the lower routing line (331) of the corresponding touch routing line (330). For example, the touch insulating film (350) may include routing contact holes that partially expose the lower routing line (331) of each touch routing line (330). The upper routing line (332) of each touch routing line (330) may come into direct contact with the lower routing line (331) of the corresponding touch routing line (330) through the routing contact holes. Accordingly, in a touch display device according to an embodiment of the present invention, the first touch line (310) and the second touch line (320) can be stably connected to the corresponding touch pad (304) by the touch routing lines (330). In addition, in a touch display device according to an embodiment of the present invention, the resistance of each touch routing line (330) can be reduced. Therefore, in a touch display device according to an embodiment of the present invention, signal delay caused by the touch routing lines (330) can be minimized.

[0088] The touch routing lines (330) may extend between the second power supply voltage line (VSS) and the display area (AA). For example, the auxiliary electrode (400) may be connected to the second power supply voltage line (VSS) through a connecting electrode (450) that intersects at least one of the touch routing lines (330). The connecting electrode (450) may be located on a different layer from the upper routing line (332). For example, the connecting electrode (450) may be located between the touch buffer film (200) and the touch insulating film (350). The connecting electrode (450) may contain the same material as the auxiliary bridges (420). The lower routing line (331) of each touch routing line (330) may be spaced apart from the connecting electrode (450). For example, the upper routing line (332) of each touch routing line (330) can be electrically connected to the lower routing line (331) of the corresponding touch routing line (330) on the outside of the connecting electrode (450).

[0089] The connecting electrode (450) may extend between the dams (106). For example, a portion of the second supply line (V2) may be connected to the first supply line (V1) through the connecting electrode (450). The intermediate electrode (315) may extend between the first supply line (V1) and the connecting electrode (450). For example, the intermediate electrode (315) and the connecting electrode (450) may be stacked between a portion of the first supply line (V1) and a portion of the second supply line (V2). Accordingly, in a touch display device according to an embodiment of the present invention, the intermediate electrode (315) and the connecting electrode (450) can be stably connected to the second power supply voltage line (VSS).

[0090] Consequently, in a touch display device according to an embodiment of the present invention, a touch sensor (Cm) including touch electrodes (311, 321) is positioned on an encapsulation unit (140) covering the light-emitting elements (130), and the auxiliary line (400) crossing between the touch electrodes (311, 321) is electrically connected to the second power supply voltage line (VSS) outside the display area (AA), and the second light-emitting electrode (133) of each light-emitting element (130) can be electrically connected to the auxiliary line (400) within the display area (AA). Accordingly, in a touch display device according to an embodiment of the present invention, a variation in brightness caused by voltage drop can be effectively prevented. Therefore, in a touch display device according to an embodiment of the present invention, the quality of the image can be improved.

[0091] FIG. 10 is a drawing showing a touch display device according to another embodiment of the present invention. FIG. 10 shows a cross-section cut along the line VI-VI' of FIG. 3. A touch display device according to another embodiment of the present invention may further include a conductive pattern (600) located on the upper surface of the spacer (115) facing the element substrate (110). The conductive pattern (600) may include a conductive material. For example, the conductive pattern (600) may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or an alloy of these metals. The second light-emitting electrode (133) of each light-emitting element (130) may be electrically connected to the conductive pattern (600). Accordingly, in a touch display device according to another embodiment of the present invention, an unstable connection between the second light-emitting electrode (133) and one of the auxiliary electrodes (410) of the auxiliary line can be prevented by the process of forming a hole penetrating the encapsulation unit (140), the touch buffer film (200), and the touch insulating film (350). That is, in a touch display device according to another embodiment of the present invention, even if a portion of the second light-emitting electrode (133) is damaged by the process of forming a hole penetrating the encapsulation unit (140), the touch buffer film (200), and the touch insulating film (350), the second light-emitting electrode (133) can be stably connected to one of the auxiliary electrodes (410) of the auxiliary line.

[0092] As illustrated in FIG. 11, in a touch display device according to another embodiment of the present invention, the auxiliary line (400) may further include a dummy line (430) that surrounds the display area (AA) inside the touch routing lines (330). The dummy line (430) may be electrically connected to the second power supply voltage line (VSS) through the connecting electrode (450). The dummy line (430) may extend along the space between the touch routing lines (330) and the touch electrodes (311, 321). Accordingly, in a touch display device according to another embodiment of the present invention, the parasitic capacitance between the touch routing lines (330) and the touch electrodes (311, 321) may be reduced. In addition, in a touch display device according to another embodiment of the present invention, signal distortion of the touch lines (310, 320) caused by a signal applied through the touch routing lines (330) can be prevented. Accordingly, in a touch display device according to another embodiment of the present invention, the accuracy of touch detection can be improved.

[0093] The dummy line (430) may intersect with the touch routing lines (330). For example, the dummy line (430) may contain the same material as the auxiliary bridges (420). The dummy line (430) may come into direct contact with the connecting electrode (450). Accordingly, in a touch display device according to another embodiment of the present invention, the accuracy of touch detection is effectively improved without reducing process efficiency, and brightness deviation due to voltage drop can be prevented.

[0094] The second power supply voltage line (VSS) may be partially separated. For example, as shown in FIG. 11, the second power supply voltage line (VSS) may include a separation groove (Cg). Accordingly, in a touch display device according to an embodiment of the present invention, noise caused by an external signal is blocked by the second power supply voltage line (VSS), and the influence of a signal applied through the second power supply voltage line (VSS) on a signal applied through surrounding wiring, for example, touch routing lines (330), can be minimized. Thus, in a touch display device according to an embodiment of the present invention, the accuracy of touch by a user and / or tool can be improved. Explanation of the symbols

[0095] 100: Device substrate 130: Light-emitting element 140: Bag Unit 310: 1st Touch Line 320: Second touchline 400: Auxiliary line VSS: 1st power supply voltage line

Claims

Claim 1 A device substrate comprising a display area and a bezel area; a light-emitting element comprising a first light-emitting electrode, a light-emitting layer, and a second light-emitting electrode stacked in order and located on the display area of ​​the device substrate; a first dam located on the bezel area of ​​the device substrate and surrounding the display area; an encapsulation unit comprising an organic encapsulation layer covering the light-emitting element and located on an area defined by the first dam; a power supply voltage line located outside the first dam and extending along the edge of the display area; a touch sensor located on the encapsulation unit and comprising touch electrodes; and an auxiliary line electrically connected to the power supply voltage line and extending onto the encapsulation unit, wherein the second light-emitting electrode is electrically connected to the auxiliary line within the display area, and the auxiliary line comprises auxiliary electrodes located between the touch electrodes, and the auxiliary electrodes comprise the same material as the touch electrodes. Claim 2 A touch display device according to claim 1, wherein the power supply voltage supply line comprises a first supply line and a second supply line located on the first supply line, wherein the second supply line comprises the same material as the touch electrodes. Claim 3 delete Claim 4 A touch display device according to claim 1, wherein the auxiliary electrodes are located on the same layer as the touch electrodes. Claim 5 A touch display device according to claim 1, wherein the touch sensor includes touch bridges electrically connecting the touch electrodes, and the auxiliary line includes auxiliary bridges electrically connecting the auxiliary electrodes, wherein the touch bridges are located on the same layer as the touch electrodes and the auxiliary bridges are located on a different layer from the auxiliary electrodes. Claim 6 In claim 5, each auxiliary bridge is a touch display device that intersects with one of the touch bridges. Claim 7 A touch display device according to claim 5, further comprising: touch pads located on the bezel region of the element substrate and spaced apart from the encapsulation unit; touch routing lines extending along the surface of the encapsulation unit and electrically connecting each touch electrode to one of the touch pads; and a connecting electrode located between the power supply voltage line and the auxiliary line and intersecting the touch routing lines, wherein the connecting electrode is located on a different layer from the touch routing lines. Claim 8 In claim 7, the touch display device wherein the connecting electrode comprises the same material as the touch bridges. Claim 9 A touch display device according to claim 7, wherein each touch routing line comprises a first routing line having the same material as the touch bridges and a second routing line having the same material as the touch electrodes, wherein the first routing line is spaced apart from the connecting electrode and the second routing line is electrically connected to the first routing line on the outside of the connecting electrode. Claim 10 A touch display device according to claim 7, further comprising a dummy line electrically connected to the connecting electrode and surrounding the display area, wherein the dummy line comprises the same material as the connecting electrode. Claim 11 A touch display device according to claim 1, further comprising a second dam located outside the first dam and extending parallel to the first dam, wherein the auxiliary line is electrically connected to the power voltage supply line between the first dam and the second dam. Claim 12 A touch display device according to claim 11, further comprising: an overcoat layer located between the display area of ​​the element substrate and the light-emitting element; a bank insulating film located on the overcoat layer and covering the edge of the first light-emitting electrode; and an intermediate electrode electrically connected to the power supply voltage line and extending between the overcoat layer and the bank insulating film, wherein the second light-emitting electrode penetrates the bank insulating film and is electrically connected to the intermediate electrode. Claim 13 A device substrate comprising a display area and a bezel area; a light-emitting element comprising a first light-emitting electrode, a light-emitting layer, and a second light-emitting electrode stacked in order and located on the display area of ​​the device substrate; a first dam located on the bezel area of ​​the device substrate and surrounding the display area; an encapsulation unit comprising an organic encapsulation layer covering the light-emitting element and located on an area defined by the first dam; a power supply voltage line located outside the first dam and extending along the edge of the display area; a touch sensor located on the encapsulation unit and comprising touch electrodes; an auxiliary line electrically connected to the power supply voltage line and extending onto the encapsulation unit; and a bank insulating film located on the display area of ​​the device substrate and defining a light-emitting area. A touch display device comprising a spacer located on the bank insulating film, wherein the first light-emitting electrode, the light-emitting layer, and the second light-emitting electrode of the light-emitting element are laminated on the light-emitting region defined by the bank insulating film, and the second light-emitting electrode is electrically connected to the auxiliary line on the spacer. Claim 14 A touch display device according to claim 13, further comprising a conductive pattern located on the upper surface of the spacer facing the element substrate, wherein the second light-emitting electrode is electrically connected to the conductive pattern.

Images