Touch display devices

Abstract

A touch display device is provided. The touch display device may include touch electrodes located on a package unit covering light-emitting devices. An auxiliary line spanning a display area where the light-emitting devices are disposed may be provided on the package unit. The auxiliary line may be electrically connected to a power supply line outside the display area. Each of the light-emitting devices may include a first emitting electrode, a light-emitting stack, and a second emitting electrode, the first emitting electrode, the light-emitting stack, and the second emitting electrode being stacked on a light-emitting area defined by a retaining layer. The second emitting electrode of each light-emitting device may be electrically connected to the auxiliary line located on the retaining layer. Therefore, in the touch display device, brightness deviation due to voltage drop can be avoided.

Description

Technical Field

[0001] This disclosure relates to a touch display device, and more specifically, to a touch display device in which touch electrodes are disposed on a packaged unit covering a light-emitting device. Background Technology

[0002] Typically, a display device provides an image to a user. For example, a display device may include multiple pixel areas. Each pixel area can achieve a specific color. For example, a light-emitting device may be disposed in each pixel area. The light-emitting device can emit light that displays a specific color. For example, the light-emitting device may include a first emitting electrode, a light-emitting stack, and a second emitting electrode sequentially stacked on a device substrate.

[0003] Display devices can execute specific programs or apply specific signals through touch by users and / or tools. For example, a display device can be a touch display device that includes a touch sensor. The touch sensor can be disposed on a packaged unit covering the light-emitting device. For example, the touch sensor can include touch electrodes disposed side by side on the packaged unit.

[0004] In touch display devices, the power supply line that supplies power to the light-emitting devices can be located outside the display area where the light-emitting devices are located. Therefore, in touch display devices, due to voltage drops, the light emitted from a light-emitting device located in the central area of ​​the display area may have a different brightness than the light emitted from a light-emitting device located in the edge area of ​​the display area. Summary of the Invention

[0005] Therefore, this disclosure relates to a touch display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the prior art.

[0006] The purpose of this disclosure is to provide a touch display device that can prevent or at least reduce brightness deviation caused by voltage drop.

[0007] Additional advantages, objects, and features of this disclosure will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art upon examination of the following, or may be learned from practice of this disclosure. The objects and other advantages of this disclosure may be realized and obtained by means of the written description, its claims, and the structures particularly pointed out in the accompanying drawings.

[0008] To achieve these objectives and other advantages, and in accordance with the purposes of this disclosure, as specifically implemented and broadly described herein, a touch display device is provided, the touch display device comprising: a device substrate including a display area and a border area; a light-emitting device located on the display area, the light-emitting device including a first emitting electrode, a light-emitting stack, and a second emitting electrode stacked sequentially; a first dam located on the border area surrounding the display area; an encapsulation layer located on the light-emitting device, the encapsulation layer including an organic encapsulation layer located in the region defined by the first dam; a power supply line located outside the first dam, the power supply line extending along the edge of the display area; a touch sensor located on the encapsulation layer, the touch sensor including a plurality of touch electrodes; and an auxiliary line electrically connected to the power supply line, the auxiliary line extending on the encapsulation layer in the display area and connected to the second emitting electrode in the display area.

[0009] In one embodiment, a touch display device includes: a substrate including a display area and a border area; a plurality of pixels, each pixel including a light-emitting device, the light-emitting device including a first electrode, a light-emitting layer on the first electrode, and a second electrode on the light-emitting layer, wherein a second electrode of a first pixel is electrically connected to a second electrode of a second pixel, the second pixel being closer to the border area than the first pixel, such that the second electrode of the second pixel extends from the display area to the border area; a power supply line located on the border area and connected to the second electrode of the second pixel to supply power voltage to the second pixel, and the power voltage being supplied to the second electrode of the first pixel via the second electrode of the second pixel; a touch sensor located on the plurality of pixels, the touch sensor including a plurality of touch electrodes; and an auxiliary power line located on the display area, the auxiliary power line being electrically connected to the power voltage and connected to the second electrodes of the first pixel and the second pixel in the display area to supply the power voltage to the second electrodes of the first pixel and the second pixel.

[0010] In one embodiment, a touch display device includes: a substrate including a display area and a border area; a light-emitting device including a first electrode, a light-emitting layer on the first electrode, and a second electrode on the light-emitting layer; a power supply line located on the border area, the power supply line supplying a power voltage; a touch sensor located on the light-emitting device in the display area, the touch sensor including a plurality of touch electrodes, at least one touch electrode including a first portion and a second portion spaced apart from the first portion in a plan view of the touch display device; and an auxiliary line electrically connected to the power supply line, the auxiliary line located in the display area between the first portion and the second portion of at least one touch electrode, wherein a portion of the auxiliary line contacts the second electrode of the light-emitting device in the display area to supply a power voltage to the second electrode of the light-emitting device. Attached Figure Description

[0011] The accompanying drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. In the drawings:

[0012] Figure 1 and Figure 2 This is a schematic view of a touch display device according to an embodiment of the present disclosure;

[0013] Figure 3 It is based on the embodiments of this disclosure. Figure 2 A magnified view of region K in the image;

[0014] Figure 4 It is according to the embodiments of this disclosure along Figure 2 The view captured by I-I';

[0015] Figure 5 It is according to the embodiments of this disclosure along Figure 2 The view captured by II-II';

[0016] Figure 6 It is according to the embodiments of this disclosure along Figure 2 The view captured by section III-III';

[0017] Figure 7 It is according to the embodiments of this disclosure along Figure 2 The view captured by IV-IV';

[0018] Figure 8 It is according to the embodiments of this disclosure along Figure 3 The view captured by V-V';

[0019] Figure 9 It is according to the embodiments of this disclosure along Figure 3 The view captured by VI-VI'; and

[0020] Figure 10 and Figure 11 This is a view illustrating a touch display device according to another embodiment of the present disclosure. Detailed Implementation

[0021] In the following detailed description with reference to the accompanying drawings, the details relating to the above-mentioned objectives, technical construction, and operational effects of embodiments of the present disclosure will become clear. The drawings illustrate some embodiments of the present disclosure. Embodiments of the present disclosure are provided herein to satisfactorily convey the technical spirit of the present disclosure to those skilled in the art, and therefore the present disclosure may be embodied in other forms and is not limited to the embodiments described below.

[0022] Furthermore, throughout the specification, identical or very similar elements may be referred to by the same reference numerals, and in the drawings, for convenience, the length and thickness of layers and regions may be exaggerated. It will be understood that when a first element is referred to as being "on" a second element, although the first element may be disposed on the second element to contact the second element, a third element may be situated between the first and second elements.

[0023] Here, for example, terms such as "first" and "second" may be used to distinguish one element from another. However, without departing from the technical spirit of this disclosure, the first and second elements may be named arbitrarily as is convenient for those skilled in the art.

[0024] The terminology used in this disclosure is for describing particular embodiments only and is not intended to limit the scope of this disclosure. For example, unless the context clearly indicates otherwise, elements described in the singular are intended to include multiple elements. Furthermore, it will be further understood in this disclosure that the terms “comprising” and “including” indicate the presence of the mentioned features, integers, steps, operations, elements, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0025] Furthermore, unless “direct” is used, the terms “connection” and “linkage” can include two components being “connected” or “linked” through one or more other components located between the two components.

[0026] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments pertain. It will be further understood that terms (such as those defined in general dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0027] (Implementation Method)

[0028] Figure 1 and Figure 2 This is a schematic view of a touch display device according to an embodiment of the present disclosure. Figure 3 It is based on the embodiments of this disclosure. Figure 2 A magnified view of region K in the image. Figure 4 It is according to the embodiments of this disclosure along Figure 2 The view captured by I-I'. Figure 5 It is according to the embodiments of this disclosure along Figure 2 The view captured by II-II'. Figure 6 It is according to the embodiments of this disclosure along Figure 2 The view captured by the III-III' cutoff. Figure 7 It is according to the embodiments of this disclosure along Figure 2 The view captured by IV-IV'. Figure 8 It is according to the embodiments of this disclosure along Figure 3 The view captured by V-V'. Figure 9 It is according to the embodiments of this disclosure along Figure 3 The view captured by VI-VI'.

[0029] Reference Figures 1 to 9 The touch display device according to embodiments of the present disclosure 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 border area BZ disposed outside the display area AA. For example, the border area BZ may surround the display area AA.

[0030] The display area AA of the device substrate 110 can display an image provided to the user. For example, multiple pixel areas PA can be disposed in the display area AA of the device substrate 110. The pixel areas PA can be arranged side by side in a first direction and a second direction perpendicular to the first direction. Figure 3As shown, two adjacent pixel areas PA in the first direction can be alternately arranged. Two adjacent pixel areas PA in the second direction can also be alternately arranged. Each pixel area PA can correspond to a color different from the color of its adjacent pixel areas PA. The touch display device according to an embodiment of this disclosure can have a pen-tile structure. For example, in this touch display device, the pixel area PA may include a first row with alternating arrangements of red pixel areas R and blue pixel areas B, and a second row with alternating arrangements of green pixel areas G, wherein the first row and the second row are alternately arranged.

[0031] Light displaying a specific color can be emitted from each pixel region PA. For example, a pixel driving circuit and a light-emitting device 130 electrically connected to the pixel driving circuit can be disposed in each pixel region PA.

[0032] like Figure 1 As shown, the pixel driving circuit can connect one gate line of the gate line GL that applies the gate signal and one data line of the data line DL that applies the data signal. For example, the pixel driving circuit can generate a driving current corresponding to the data signal based on the gate signal. The driving current generated by the pixel driving circuit can be provided to the light-emitting device 130 during 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.

[0033] The switching thin-film transistor T1 can transmit a data signal to the driving thin-film transistor T2 according to the gate signal. The driving thin-film transistor T2 can generate a drive current. For example, the driving thin-film transistor T2 may include a semiconductor pattern 121, a gate insulating layer 122, a gate electrode 123, a source electrode 124, and a drain electrode 125, such as... Figure 8 As shown.

[0034] Semiconductor pattern 121 may include a semiconductor material. For example, semiconductor pattern 121 may include at least one of amorphous silicon, polycrystalline silicon, and oxide semiconductor. Semiconductor pattern 121 may include a source region, a drain region, and a channel region. The channel region may be disposed between the source region and the drain region. The source region and drain region may have a lower resistance than the channel region. For example, the source region and drain region may include conductive regions of an oxide semiconductor.

[0035] A gate insulating layer 122 may be disposed on the semiconductor pattern 121. For example, the gate insulating layer 122 may overlap with the channel region of the semiconductor pattern 121. The source and drain regions of the semiconductor pattern 121 may be disposed outside the gate insulating layer 122. The gate insulating layer 122 may include an insulating material. For example, the gate insulating layer 122 may include an inorganic insulating material, such as silicon oxide (SiO) and silicon nitride (SiN).

[0036] Gate electrode 123 may be disposed on gate insulating layer 122. For example, gate electrode 123 may overlap with the channel region of semiconductor pattern 121. Gate electrode 123 may be insulated from semiconductor pattern 121 by gate insulating layer 122. For example, side surface of gate insulating layer 122 may be continuous with side surface of gate electrode 123. Gate electrode 123 may include a conductive material. For example, gate electrode 123 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or alloys thereof. Furthermore, gate electrode 123 may have a single-layer structure or a multi-layer structure. The channel region of semiconductor pattern 121 may have a conductivity corresponding to the voltage applied to gate electrode 123.

[0037] The source electrode 124 may include a conductive material. For example, the source electrode 124 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or alloys thereof. Furthermore, the source electrode 124 may have a single-layer or multi-layer structure. The source electrode 124 may be insulated from the gate electrode 123. The source electrode 124 and the gate electrode 123 may be disposed on different layers. For example, an interlayer insulating layer 112 covering the gate electrode 123 may be disposed on the device substrate 110, and the source electrode 124 may be disposed on the interlayer insulating layer 112. The interlayer insulating layer 112 may include an insulating material. For example, the interlayer insulating layer 112 may include inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN).

[0038] The source electrode 124 can be electrically connected to the source region of the semiconductor pattern 121. For example, the interlayer insulating layer 112 may include a source contact hole that partially exposes the source region of the semiconductor pattern 121. The source electrode 124 can directly contact the source region of the semiconductor pattern 121 through the source contact hole.

[0039] The drain electrode 125 may include a conductive material. For example, the drain electrode 125 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or alloys thereof. Furthermore, the drain electrode 125 may have a single-layer or multi-layer structure. The drain electrode 125 may be insulated from the gate electrode 123. The drain electrode 125 may be disposed on a different layer than the gate electrode 123. For example, the drain electrode 125 may be disposed on an interlayer insulating layer 112. The drain electrode 125 may be disposed 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 may be formed simultaneously with the source electrode 124.

[0040] The drain electrode 125 can be electrically connected to the drain region of the semiconductor pattern 121. For example, the interlayer insulating layer 112 may include a drain contact hole that partially exposes the drain region of the semiconductor pattern 121. The drain electrode 125 can directly contact the drain region of the semiconductor pattern 121 through the drain contact hole.

[0041] The switching thin-film transistor T1 can 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 electrically connected to a first power supply voltage supply line VDD that supplies a positive power supply voltage. The storage capacitor Cst may hold the signal applied to the gate electrode 123 of the driving thin-film transistor T2 during a 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.

[0042] The light-emitting device 130 can emit light using a driving current supplied from the pixel driving circuit. For example, the light-emitting device 130 may include a first emitting electrode 131, a light-emitting stack 132, and a second emitting electrode 133 sequentially stacked on the device substrate 110.

[0043] The first emitting electrode 131 can 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 can be supplied to the first emitting electrode 131 of the light-emitting device 130. The first emitting electrode 131 can include a conductive material. The first emitting electrode 131 can include a material with high reflectivity. For example, the first emitting electrode 131 can be a metal, such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or alloys thereof. Furthermore, the first emitting electrode 131 can have a single-layer structure or a multi-layer structure. For example, the first emitting electrode 131 can have a structure in which reflective electrodes made of metal are disposed between transparent electrodes made of transparent conductive materials such as ITO and IZO.

[0044] The light-emitting stack 132 can generate light with a brightness corresponding to the voltage difference between the first emitting electrode 131 and the second emitting electrode 133. For example, the light-emitting stack 132 may include a light-emitting material layer (EML) having a light-emitting material. The light-emitting material may include organic materials, inorganic materials, or mixed materials. For example, a touch display device according to an embodiment of the present disclosure may be an organic light-emitting display device including an organic light-emitting material.

[0045] 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 (ETL), and an electron injection layer (EIL). The light-emitting stack 132 may include multiple light-emitting material layers. For example, the light-emitting stack 132 may include a charge generation layer (CGL) 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.

[0046] The second emitting electrode 133 may include a conductive material. The second emitting electrode 133 may have a higher light transmittance than the first emitting electrode 131. For example, the second emitting electrode 133 may be a transparent electrode made of a transparent conductive material. The second emitting electrode 133 may include a transparent conductive oxide material, such as ITO, IZO, and AZO. Therefore, in the touch display device according to embodiments of the present disclosure, the light generated by the light-emitting stack 132 of each pixel region PA can be emitted to the outside through the second emitting electrode 133 of the corresponding pixel region PA.

[0047] A device buffer layer 111 may be disposed between the device substrate 110 and the pixel driving circuitry in each pixel region PA. The device buffer layer 111 can prevent or at least reduce contamination caused by the device substrate 110 during the process of forming the pixel driving circuitry. The device buffer layer 111 may extend to the border region BZ of the device substrate 110. For example, the upper surface of the pixel driving circuitry facing each pixel region PA of the device substrate 110 may be completely covered by the device buffer layer 111. The device buffer layer 111 may include an insulating material. For example, the device buffer layer 111 may include inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN). The device buffer layer 111 may include a multilayer structure. For example, the device buffer layer 111 may have a stacked structure of an inorganic insulating layer made of silicon oxide (SiO) and an inorganic insulating layer made of silicon nitride (SiN). However, this disclosure is not limited thereto. For example, the device buffer layer 111 may be made only of organic insulating materials. Alternatively, the device buffer layer 111 may have a multilayer structure of organic and inorganic insulating layers.

[0048] An outer coating 113 may be disposed between the pixel driving circuit of each pixel region PA and the light-emitting device 130. The outer coating 113 can eliminate thickness differences caused by the pixel driving circuit of each pixel region PA. For example, the upper surface of the outer coating 113 opposite to the device substrate 110 may be a flat surface. The switching thin-film transistor T1, the driving thin-film transistor T2, and the storage capacitor Cst in each pixel region PA may be covered by the outer coating 113. The outer coating 113 may include an insulating material. The outer coating 113 may include a material different from the interlayer insulating layer 112. For example, the outer coating 113 may include an organic insulating material.

[0049] The first emitter electrode 131 of each pixel region PA can penetrate the outer coating 113 to be electrically connected to the pixel driving circuit of the corresponding pixel region PA. For example, the outer coating 113 may include pixel contact holes that partially expose the drain electrode 125 of the driving thin-film transistor T2 in each pixel region PA. The first emitter electrode 131 of each pixel region PA can directly contact the drain electrode 125 of the driving thin-film transistor T2 in the corresponding pixel region PA through one of the pixel contact holes.

[0050] The first emission electrode 131 of each pixel region PA may be insulated from the first emission electrodes 131 of adjacent pixel regions PA. The first emission electrode 131 of each pixel region PA may be spaced apart from the first emission electrodes 131 of adjacent pixel regions PA. For example, a dam insulating layer 114 may be disposed between the first emission electrodes 131 of adjacent pixel regions PA. The dam insulating layer 114 may include an insulating material. For example, the dam insulating layer 114 may include an organic insulating material. The dam insulating layer 114 may cover the edge of the first emission electrode 131 in each pixel region PA. The light-emitting stack 132 and the second emission electrode 133 of each pixel region PA may be stacked on the portion of the corresponding first emission electrode 131 exposed through the dam insulating layer 114. For example, the dam insulating layer 114 may define light-emitting regions BEA, GEA, and REA in each pixel region PA.

[0051] The light-emitting device 130 of each pixel region PA can have the same structure as the light-emitting devices 130 of adjacent pixel regions PA. For example, the light-emitting stack 132 of each pixel region PA can extend along the surface of the insulating layer 114 to connect to the light-emitting stack 132 of each pixel region PA. The light emitted from the light-emitting device 130 of each pixel region PA can display the same color as the light emitted from the light-emitting devices 130 of adjacent pixel regions PA. For example, the light-emitting stack 132 of each pixel region PA can emit white light. The light-emitting stack 132 of each pixel region PA can be formed simultaneously with the light-emitting stack 132 of adjacent pixel regions PA. Therefore, in the touch display device according to the embodiments of the present disclosure, the process of forming the light-emitting stack 132 on each pixel region PA can be simplified.

[0052] The voltage applied to the second emitting electrode 133 of each pixel region PA can be the same as the voltage applied to the second emitting electrode 133 of adjacent pixel regions PA. For example, the second emitting electrode 133 of each pixel region PA can be electrically connected to a second power supply voltage supply line VSS that supplies a negative power supply voltage. Each second emitting electrode 133 of each pixel region PA can be supplied with a negative power supply voltage from the auxiliary line 400 and the second emitting electrode 133 of the pixel closest to the border region BZ and connected to the second power supply voltage supply line VSS, as will be further described below. Therefore, in the touch display device according to an embodiment of the present disclosure, the brightness of the light emitted from the light-emitting device 130 of each pixel region PA can be adjusted by applying a data signal to the corresponding pixel region PA. The second emitting electrode 133 of each pixel region PA can be electrically connected to the second emitting electrode 133 of adjacent pixel regions PA. For example, the second emitting electrode 133 of each pixel region PA can be in direct contact with the second emitting electrode 133 of adjacent pixel regions PA. The second emitting electrode 133 of each pixel region PA can be formed simultaneously with the second emitting electrode 133 of adjacent pixel regions PA. Therefore, in the touch display device according to the embodiments of the present disclosure, the process of forming the second emission electrode 133 on each pixel area PA can be simplified.

[0053] The second power supply voltage line VSS can be disposed on the border area BZ of the device substrate 110. For example, the second power supply voltage line VSS can extend along the edge of the display area AA, such as... Figure 2 As shown. Therefore, in the touch display device according to the present disclosure embodiment, noise caused by external signals can be blocked by the second power supply voltage line VSS. Therefore, in the touch display device according to the present disclosure embodiment, signal distortion caused by external signals can be effectively prevented.

[0054] The second power supply voltage supply line VSS can have a multi-layer structure. For example, the second power supply voltage supply line VSS can have a stacked structure of a first supply line V1 and a second supply line V2, such as... Figure 5 As shown. The second supply line V2 can be disposed on the first supply line V1. Therefore, the second supply line V2 and the first supply line V1 overlap. The first supply line V1 can be formed using a process for forming pixel driving circuits in each pixel region PA. For example, the first supply line V1 may include the same material as the source electrode 124 and drain electrode 125 of each pixel region PA.

[0055] The device buffer layer 111 and the interlayer insulating layer 112 can extend on the border region BZ of the device substrate 110. For example, the second power supply voltage line VSS can be disposed on the interlayer insulating layer 112. The outer coating layer 113 and the dam insulating layer 114 may include the ends disposed between the display area AA of the device substrate 110 and the second power supply voltage line VSS. Therefore, in the touch display device according to the embodiments of the present disclosure, the process of electrically connecting the second emitting electrode 133 of each light-emitting device 130 to the second power supply voltage line VSS can be simplified.

[0056] The second power supply voltage line VSS can be electrically connected to the second emitting electrode 133 of each light-emitting device 130 through the intermediate electrode 315. For example... Figure 5 As shown, the second emitter electrode 133 of the pixel area PA closest to the border area BZ extends from the display area AA to the border area BZ and is electrically connected to the second power supply voltage supply line VSS via the intermediate electrode 315. Since the second emitter electrodes 133 of the pixels are connected to each other, the second emitter electrode 133 of the pixel closest to the border area BZ supplies the second power supply voltage of VSS to at least one other pixel closer to the center of the display area AA. Because the other pixels closer to the center of the display area AA also receive the second power supply voltage of VSS via the auxiliary line 400, the amplitude of the second power supply voltage of VSS received by the pixel closer to the center of the display area AA is substantially the same as the amplitude of the second power supply voltage of VSS received by the pixel closest to the border area BZ, thereby improving brightness uniformity.

[0057] like Figure 5 As shown, in one embodiment, the intermediate electrode 315 may extend such that a portion of the intermediate electrode 315 is located between the outer coating 113 and the dam insulating layer 114, and the second emitting electrode 133 of the light-emitting device 130 may penetrate the dam insulating layer 114 to be electrically connected to the intermediate electrode 315. Figure 5 As shown, the intermediate electrode 315 includes a first end connected to the second power supply voltage line VSS and a second end connected to the second emission electrode 133 of the pixel extending from the display area AA to the border area BZ. Therefore, in the touch display device according to the present disclosure embodiment, the second emission electrode 133 can be prevented from disconnecting due to the thickness difference between the outer coating 113 and the embankment insulating layer 114. Therefore, in the touch display device according to the present disclosure embodiment, the second emission electrode 133 of each light-emitting device 130 can be stably connected to the second power supply voltage line VSS.

[0058] The intermediate electrode 315 can be formed using the same process as that used to form the light-emitting device 130. For example, the intermediate electrode 315 may comprise the same material as the first emitting electrode 131 of each light-emitting device 130. Therefore, in the touch display device according to an embodiment of the present disclosure, a negative power supply voltage can be stably supplied to each pixel area PA without reducing process efficiency.

[0059] The encapsulation unit 140 can be disposed on the light-emitting device 130 of each pixel area PA. The encapsulation unit 140 can prevent or at least reduce damage to the light-emitting device 130 due to external moisture and / or oxygen. The light-emitting device of each pixel area PA can be completely covered by the encapsulation unit 140. For example, the encapsulation unit 140 can extend on the border area BZ of the device substrate 110.

[0060] The encapsulation unit 140 (e.g., an encapsulation layer) may include multiple encapsulation layers, including at least one inorganic encapsulation layer 141 and 143 and at least one organic encapsulation layer 142. For example, the encapsulation unit 140 may have a structure in which at least one organic encapsulation layer 142 is disposed between the inorganic encapsulation layers 141 and 143. The uppermost layer of the encapsulation unit 140 may be the inorganic encapsulation layers 141 and 143. For example, the upper surface and side surfaces of the organic encapsulation layer 142 may be covered by the inorganic encapsulation layers 141 and 143. Therefore, in the touch display device according to embodiments of the present disclosure, the penetration of external moisture and oxygen can be effectively blocked or at least reduced.

[0061] Inorganic encapsulation layers 141 and 143 may include inorganic insulating materials. For example, inorganic encapsulation layers 141 and 143 may include inorganic insulating materials capable of low-temperature deposition, such as silicon nitride (SiN), silicon oxide (SiO), silicon oxynitride (SiON), and aluminum oxide (Al2O3). Therefore, in the touch display device according to embodiments of the present disclosure, damage to the light-emitting stack 132 caused by the process of forming inorganic encapsulation layers 141 and 143 can be prevented or at least reduced.

[0062] The organic encapsulation layer 142 can alleviate the stress caused by the inorganic encapsulation layers 141 and 143. For example, the organic encapsulation layer 142 may include organic insulating materials such as acrylic resin, epoxy resin, polyimide, polyethylene, and silicon oxycarbide (SiOC). The organic encapsulation layer 142 can eliminate the thickness difference caused by the light-emitting device 130. For example, the upper surface of the organic encapsulation layer 142 opposite to the device substrate 110 may be a flat surface.

[0063] The organic encapsulation layer 142 can be formed using an inkjet printing process. For example, at least one dam 106 can be disposed on the border region BZ of the device substrate 110. The dam 106 can block the flow of the organic encapsulation layer 142. The dam 106 can extend along the edge of the display region AA. For example, in a touch display device according to an embodiment of the present disclosure, the organic encapsulation layer 142 can be formed in the region defined by the dam 106. The dam 106 can be formed using a process for forming at least one insulating layer disposed between the device substrate 110 and the encapsulation unit 140. For example, the dam 106 can be formed simultaneously with the outer coating 113. The dam 106 can include the same material as the outer coating 113. For example, the dam 106 can include an organic insulating material. An interlayer insulating layer 112 can extend on the border region BZ of the device substrate 110. For example, the dam 106 can be disposed on the interlayer insulating layer 112. The thickness of the dam 106 can be the same as the thickness of the outer coating 113.

[0064] A touch sensor Cm can be disposed on the package unit 140. The touch sensor Cm can sense touch from a user and / or tool. For example, the touch sensor Cm can sense the presence or absence of a touch and the location of the touch through changes in mutual capacitance. The touch sensor Cm may include a first touch line 310 and a second touch line 320, such as... Figure 2 and Figure 3 As shown.

[0065] A touch drive signal can be applied to the first touch line 310. For example, the first touch line 310 (e.g., a first touch electrode line) can be used as a touch drive line. The first touch line 310 may include a first touch electrode 311 and a first touch bridge 312. The first touch electrodes 311 may be arranged side-by-side on the package unit 140 along a first direction. The first touch bridge 312 may be electrically connected to the first touch electrodes 311. Each first touch bridge 312 may extend in the first direction. For example, each first touch electrode 311 may be connected to an adjacent first touch electrode 311 in the first direction via one of the first touch bridges 312.

[0066] The first touch electrode 311 may include a conductive material. The first touch electrode 311 may include a material with relatively low resistance. For example, the first touch electrode 311 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or alloys thereof. Each first touch electrode 311 may have a single-layer structure or a multi-layer structure. For example, the first touch electrode 311 may have a three-layer structure, such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0067] The first touch bridge 312 may include a conductive material. The first touch bridge 312 may include a material with relatively low resistance. For example, the first touch bridge 312 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or alloys thereof. The first touch bridge 312 may include the same material as the first touch electrode 311. Each first touch bridge 312 may have a single-layer or multi-layer structure. For example, the first touch bridge 312 may have a three-layer structure, such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. The first touch bridge 312 may have the same structure as the first touch electrode 311. The first touch bridge 312 may be disposed on the same layer as the first touch electrode 311. For example, each first touch bridge 312 may be in direct contact with the corresponding first touch electrode 311.

[0068] The second touch line 320 (e.g., a second touch electrode line) may include a second touch electrode 321 and a second touch bridge 322. The second touch electrode 321 may be disposed side-by-side on the packaging unit 140 along a second direction different from the first direction. The second touch electrode 321 may be disposed on the same layer as the first touch electrode 311. The second touch electrode 321 may be insulated from the first touch electrode 311. For example, the second touch electrode 321 may be disposed between the first touch electrodes 311. The second touch electrode 321 may have the same shape as the first touch electrode 311. For example, the first touch electrode 311 and the second touch electrode 321 may be alternately arranged on the packaging unit 140. Therefore, in the touch display device according to embodiments of the present disclosure, the charge introduced by the touch drive signal can be discharged through the second touch line 320. For example, the second touch line 320 can be used as a touch sensing line. Therefore, the touch display device according to embodiments of the present disclosure can use a touch sensor Cm to sense whether a user and / or tool is touching and the touch position.

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

[0070] The second touch electrode 321 may be disposed on the same layer as the first touch electrode 311 and the first touch bridge 312. The second touch electrode 321 may be insulated from the first touch bridge 312. The second touch electrode 321 may be spaced apart from the first touch bridge 312. For example, the first touch bridge 312 may span across the second touch electrodes 321.

[0071] The second touch bridge 322 can be electrically connected to the second touch electrode 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 via one of the second touch bridges 322. In one embodiment, a pair of adjacent second touch electrodes 321 are connected to each other via a plurality of second touch bridges 322, such as... Figure 2 As shown. 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 bridge 322 may span between the first touch electrodes 311. For example, each second touch bridge 322 may intersect with one of the first touch bridges 312. The second touch bridge 322 may be insulated from the first touch bridge 312. The second touch bridge 322 may be disposed on a different layer from the first touch bridge 312. For example, the touch sensor Cm may include a touch insulating layer 350 located on the second touch bridge 322, and the first touch electrode 311, the first touch bridge 312, and the second touch electrode 321 may be disposed on the touch insulating layer 350.

[0072] The touch insulating layer 350 may include an insulating material. For example, the touch insulating layer 350 may include inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN). However, this disclosure is not limited thereto. For example, the touch insulating layer 350 may include an organic insulating material. Alternatively, the touch insulating layer 350 may have a multilayer structure with organic and inorganic insulating layers. The touch insulating layer 350 may include touch contact holes that partially expose each second touch bridge 322. Each second touch electrode 321 may be connected to a corresponding second touch bridge 322 through one of the touch contact holes.

[0073] The second touch bridge 322 may include a conductive material. The second touch bridge 322 may include a material with relatively low resistance. For example, the second touch bridge 322 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta), or alloys thereof. Each second touch bridge 322 may have a single-layer or multi-layer structure. For example, the second touch bridge 322 may have a three-layer structure, such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0074] The first touch electrode 311, the first touch bridge 312, the second touch electrode 321, and the second touch bridge 322 of the touch sensor Cm can be disposed in the display area AA of the device substrate 110. The light-emitting areas BEA, GEA, and REA of each pixel area PA can be disposed between the first touch electrode 311, the first touch bridge 312, the second touch electrode 321, and the second touch bridge 322. The first touch line 310 and the second touch line 320 can be disposed outside the light-emitting device 130. For example, the first touch electrode 311, the first touch bridge 312, the second touch electrode 321, and the second touch bridge 322 can overlap with the insulating layer 114. In a plan view, each first touch electrode 311 and each second touch electrode 321 can have a grid shape, which includes openings overlapping with the light-emitting areas BEA, GEA, and REA of each pixel area PA. Therefore, in the touch display device according to the embodiments of the present disclosure, the accuracy of touch sensing using the touch sensor Cm can be improved, and the reduction in light extraction efficiency caused by the first touch electrode 311, the first touch bridge 312, the second touch electrode 321 and the second touch bridge 322 of the touch sensor Cm can be minimized.

[0075] A touch buffer layer 200 may be disposed between the packaging unit 140 and the touch sensor Cm. For example, a second touch bridge 322 may be disposed between the touch buffer layer 200 and the touch insulating layer 350. The touch buffer layer 200 can reduce the parasitic capacitance generated between the second emitting electrode 133 of each light-emitting device 130 and the touch sensor Cm. For example, the touch buffer layer 200 can increase the distance between the first touch line 310 of the touch sensor Cm and the second emitting electrode 133 of each light-emitting device 130, as well as the distance between the second touch line 320 of the touch sensor Cm and the second emitting electrode 133 of each light-emitting device 130. Therefore, in the touch display device according to the embodiments of the present disclosure, the touch sensing accuracy of the touch sensor Cm can be improved. The touch buffer layer 200 may include an insulating material. For example, the touch buffer layer 200 may include inorganic insulating materials such as silicon oxide (SiO) and silicon nitride (SiN).

[0076] The second supply line V2 of the second power supply voltage supply line VSS may include the same material as the first touch electrode 311 and the second touch electrode 321. The second supply line V2 may be disposed on the same layer as the first touch electrode 311 and the second touch electrode 321. For example, the touch buffer layer 200 and the touch insulating layer 350 may extend on the second power supply voltage supply line VSS, and the second supply line V2 may penetrate the touch buffer layer 200 and the touch insulating layer 350 to be electrically connected to the first supply line V1. The second supply line V2 may extend parallel to the first supply line V1. Therefore, in the touch display device according to the embodiments of the present disclosure, noise applied to the touch sensor Cm by external signals can be blocked by the second supply line V2. Therefore, in the touch display device according to the embodiments of the present disclosure, the accuracy of touch sensing can be improved.

[0077] At least one auxiliary line 400 can be provided on the package unit 140. For example... Figure 2 As shown, the auxiliary line 400 can span the display area AA of the device substrate 110. The auxiliary line 400 can extend along the surface of the package unit 140. For example, the auxiliary line 400 can be electrically connected to a second power supply voltage line VSS on the border area BZ of the device substrate 110, such as... Figure 2 and Figure 5 As shown. The auxiliary line 400 can be connected to the second power supply voltage line VSS outside the dam 106 closest to the display area AA. Therefore, in the touch display device according to the present disclosure embodiment, the auxiliary line 400 can be connected to the second power supply voltage line VSS without penetrating the relatively thick organic encapsulation layer 142. Therefore, in the touch display device according to the present disclosure embodiment, the efficiency of the process of electrically connecting the auxiliary line 400 to the second power supply voltage line VSS can be improved.

[0078] The second power supply voltage line VSS may include a region disposed between the dams 106. For example, the auxiliary line 400 can be electrically connected to the second power supply voltage line VSS through a voltage contact hole located between the dams 106. Therefore, in the touch display device according to an embodiment of the present disclosure, the auxiliary line 400 can be electrically connected to the second power supply voltage line VSS without the need to add a bezel area BZ.

[0079] The auxiliary line 400 can be disposed outside the light-emitting areas BEA, GEA, and REA. For example, the auxiliary line 400 can overlap with the insulating layer 114. Therefore, in the touch display device according to an embodiment of the present disclosure, light loss due to the auxiliary line 400 can be prevented.

[0080] The auxiliary line 400 may include an auxiliary electrode 410 and an auxiliary bridging member 420. The auxiliary line 400 may cross between the first touch electrode 311 and the second touch electrode 321. The auxiliary electrode 410 may include the same material as the first touch electrode 311 and the second touch electrode 321. For example, the auxiliary electrode 410 may be disposed between the first touch electrode 311 and the second touch electrode 321. Figure 2 As shown, the second touch electrode 321 can be divided into multiple parts, and the auxiliary electrode 410 is disposed between the various parts of the second touch electrode 321, such as... Figure 2 As shown. Each auxiliary bridge 420 may intersect with one of the first touch bridge 312 and the second touch bridge 322. The auxiliary bridge 420 may be disposed on a different layer from the auxiliary electrode 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 electrode 410 may be connected in a second direction via the auxiliary bridge 420. Each auxiliary bridge 420 may extend in a second direction. For example, the auxiliary bridge 420 may be disposed side by side with the second touch bridge 322. In one embodiment, as Figure 2 As shown in the plan view of the touch display device, an auxiliary bridging member 420 is disposed between a pair of second touch bridging members 322. The auxiliary bridging member 420 may comprise the same material as the second touch bridging members 322. The auxiliary bridging member 420 may be disposed on the same layer as the second touch bridging members 322. For example, the auxiliary bridging member 420 may be disposed between the touch buffer layer 200 and the touch insulating layer 350.

[0081] The second emitting electrode 133 of each light-emitting device 130 can be electrically connected to the auxiliary line 400 in the display area AA. For example, the auxiliary electrode 410 can directly contact the second emitting electrode 133 of each light-emitting device 130 by penetrating the encapsulation unit 140, touch buffer layer 200 and touch insulating layer 350 on the insulating layer 114, such as... Figure 2 and Figure 9 As shown. Therefore, in the touch display device according to the embodiments of the present disclosure, the negative power supply voltage applied to the central region of the display area AA can be the same as the negative power supply voltage applied to the edge region of the display area AA. Therefore, the amplitude of the negative power supply voltage applied to the first pixel in the central region of the display area AA is substantially the same as the amplitude of the negative power supply voltage applied to the second pixel in the edge region of the display area AA closer to the border region BZ. Therefore, in the touch display device according to the embodiments of the present disclosure, brightness deviation due to voltage drop can be prevented or at least reduced.

[0082] Spacer 115 may be disposed on the dam insulating layer 114. Spacer 115 may include an insulating material. For example, spacer 115 may include an organic insulating material. Spacer 115 may include the same material as the dam insulating layer 114. For example, spacer 115 may be formed simultaneously with the dam insulating layer 114 using a halftone mask. Organic encapsulation layer 142 may have a relatively small thickness on spacer 115. For example, the linear distance between spacer 115 and touch insulating layer 350 may be smaller than the linear distance between dam insulating layer 114 and touch insulating layer 350. A second emitting electrode 133 of each light-emitting device 130 may extend onto spacer 115. A portion of the second emitting electrode 133 located on spacer 115 contacts auxiliary line 400 (e.g., auxiliary electrode 410) to electrically connect the second emitting electrode 133 to auxiliary line 400. Figure 10 As shown, the auxiliary electrode 410 includes a first end located on the same layer as the touch electrode (e.g., the first touch electrode 311) and a second end in contact with the second emitting electrode 133, the second end being located on a different layer from the touch electrode. Therefore, at least a portion of each auxiliary electrode is located on the same layer as the touch electrode. Thus, in the touch display device according to the embodiments of the present disclosure, the process efficiency of electrically connecting the second emitting electrode 133 of each light-emitting device 130 to the auxiliary line 400 can be improved. Furthermore, in the touch display device according to the embodiments of the present disclosure, the second emitting electrode 133 of each light-emitting device 130 can be stably connected to the auxiliary line 400.

[0083] Various signals for realizing an image can be applied to each pixel area PA through the border area BZ of the device substrate 110. For example, the border area BZ of the device substrate 110 may include a pad area PD, in which display pads 104, touch pads 304, first power supply voltage pads 804 and second power supply voltage pads 704 are provided. A dam 106 may be provided between the display area AA and the pad area PD. For example, the display pads 104, touch pads 304, first power supply voltage pads 804 and second power supply voltage pads 704 may be spaced apart from the package unit 140. Therefore, in the touch display device according to the embodiments of the present disclosure, some of the display pads 104, touch pads 304, first power supply voltage pads 804 and second power supply voltage pads 704 can be prevented from being unintentionally covered by the organic encapsulation layer 142. Therefore, in the touch display device according to the embodiments of the present disclosure, distortion of signals transmitted through the display pads 104 and touch pads 304 can be prevented.

[0084] Gate lines GL and / or data lines DL can be electrically connected to display pads 104. For example, data signals applied to each pixel area PA can be transmitted through one of the display pads 104 and one of the data lines DL. A first power supply voltage supply line VDD can be electrically connected to a first power supply voltage supply pad 804. A second power supply voltage supply pad 704 can be electrically connected to a second power supply voltage supply line VSS. The first power supply voltage supply pad 804, the second power supply voltage supply pad 704, and the touch pad 304 can be arranged side-by-side with the display pads 104. For example, pad area PD can be located on one side of 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 pad 304 can be formed using the same process as that used to form pixel driving circuitry, light-emitting devices 130, and touch sensors Cm. For example, the lower pad electrode 304a may include the same material as the source electrode 124 and drain electrode 125 of each pixel driving circuit, and the upper pad electrode 304b may include the same material as the first touch electrode 311, the first touch bridge 312, and the second touch electrode 321. The display pad 104, the first power supply voltage pad 804, and the second power supply voltage pad 704 may have the same structure as the touch pad 304. For example, each display pad 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, display pad 104, first power supply voltage pad 804 and second power supply voltage pad 704 can be formed simultaneously with touch pad 304.

[0086] Touch pad 304 can be electrically connected to first touch line 310 and second touch line 320 via touch wiring 330. For example, a touch drive signal can be applied to first touch line 310 via one of touch pads 304 and one of touch wiring 330, and the charge brought in by the touch drive signal can be discharged via second touch line 320, one of touch wiring 330 and one of touch pads 304.

[0087] The touch wiring 330 can be formed using the same process as that used to form the touch sensor Cm. For example, each touch wiring 330 may have a stacked structure including a lower wiring 331 made of the same material as the second touch bridge 322 and an upper wiring 332 made of the same material as the first touch bridge 312. The upper wiring 332 of each touch wiring 330 may be electrically connected to the lower wiring 331 of the corresponding touch wiring 330. For example, the touch insulating layer 350 may include routing contact holes that partially expose the lower wiring 331 of each touch wiring 330. The upper wiring 332 of each touch wiring 330 may directly contact the lower wiring 331 of the corresponding touch wiring 330 through the routing contact holes. Therefore, in the touch display device according to the embodiments of the present disclosure, the first touch line 310 and the second touch line 320 can be stably connected to the corresponding touch pads 304 through the touch wiring 330. Furthermore, in the touch display device according to the embodiments of the present disclosure, the resistance of each touch wiring 330 can be reduced. Therefore, in the touch display device according to the embodiments of the present disclosure, signal delay caused by touch wiring 330 can be minimized.

[0088] Touch wiring 330 can extend between the second power supply voltage line VSS and the display area AA. For example, auxiliary line 400 can be connected to the second power supply voltage line VSS via a connecting electrode 450 intersecting with at least one touch wiring 330. The connecting electrode 450 can be disposed on a different layer from the upper wiring 332. For example, the connecting electrode 450 can be disposed between the touch buffer layer 200 and the touch insulating layer 350. The connecting electrode 450 can include the same material as the auxiliary bridging member 420. The lower wiring 331 of each touch wiring 330 can be spaced apart from the connecting electrode 450. For example, the upper wiring 332 of each touch wiring 330 can be electrically connected to the lower wiring 331 of the corresponding touch wiring 330 outside the connecting electrode 450. That is, the upper wiring 332 of each touch wiring 330 can be electrically connected to the lower wiring 331 of the corresponding touch wiring 330 at a location that does not overlap with 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 via 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. Therefore, in the touch display device according to an embodiment of the present disclosure, the intermediate electrode 315 and the connecting electrode 450 may be stably connected to the second power supply voltage supply line VSS.

[0090] Therefore, in the touch display device according to the embodiments of the present disclosure, a touch sensor Cm including a first touch electrode 311 and a second touch electrode 321 can be disposed on the encapsulation unit 140 covering the light-emitting device 130, and an auxiliary line 400 spanning between the first touch electrode 311 and the second touch electrode 321 can be electrically connected to a second power supply voltage line VSS outside the display area AA, and the second emitting electrode 133 of each light-emitting device 130 can be electrically connected to the auxiliary line 400 in the display area AA. Therefore, in the touch display device according to the embodiments of the present disclosure, brightness deviation caused by voltage drop can be effectively prevented. Therefore, in the touch display device according to the embodiments of the present disclosure, image quality can be improved.

[0091] Figure 10 This is a view illustrating a touch display device according to another embodiment of the present disclosure. Figure 10 It is according to another embodiment along Figure 3 The view shown is a cutaway view from VI-VI'. A touch display device according to another embodiment of this disclosure may further include a conductive pattern 600 disposed on the upper surface of the spacer 115 opposite to the device substrate 110. That is, the conductive pattern 600 is located between the auxiliary line 400 (e.g., auxiliary electrode 410) and the portion of the second emitting electrode 133 that contacts the auxiliary line 400. The conductive pattern 600 may include a conductive material. For example, the conductive pattern 600 may include metals such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W), or alloys thereof. The second emitting electrode 133 of each light-emitting device 130 may be electrically connected to the conductive pattern 600. Therefore, in a touch display device according to another embodiment of this disclosure, unstable connections between the second emitting electrode 133 and one of the auxiliary electrodes 410 of the auxiliary line can be prevented due to the process of forming holes penetrating the encapsulation unit 140, the touch buffer layer 200, and the touch insulating layer 350. In other words, in a touch display device according to another embodiment of the present disclosure, even if the process of forming a hole through the encapsulation unit 140, the touch buffer layer 200 and the touch insulating layer 350 may damage a portion of the second emitting electrode 133, the second emitting electrode 133 can still be stably connected to one of the auxiliary electrodes 410 of the auxiliary line.

[0092] In another embodiment of the touch display device according to this disclosure, the auxiliary line 400 may further include a dummy line 430 that surrounds the display area AA, such that the dummy line 430 is located between the display area AA and the touch wiring 330 in a plan view. Figure 11As shown. The dummy line 430 can be electrically connected to the second power supply voltage line VSS via the connecting electrode 450. The dummy line 430 can extend along the touch wiring 330 between the first touch electrode 311 and the second touch electrode 321. Therefore, in a touch display device according to another embodiment of the present disclosure, parasitic capacitance between the touch wiring 330 and the first touch electrode 311 and the second touch electrode 321 can be prevented or at least reduced. Furthermore, in a touch display device according to another embodiment of the present disclosure, distortion of the signal applied by the first touch line 310 and the second touch line 320 due to the signal applied by the touch wiring 330 can be prevented or at least reduced. Therefore, in a touch display device according to an embodiment of the present disclosure, the accuracy of touch sensing can be improved.

[0093] The dummy line 430 may intersect with the touch wiring 330. For example, the dummy line 430 may include an auxiliary bridging element 420. The dummy line 430 may directly contact the connecting electrode 450. Therefore, in a touch display device according to another embodiment of the present disclosure, the accuracy of touch sensing can be effectively improved without reducing process efficiency, and brightness deviation due to voltage drop can be prevented.

[0094] The second power supply voltage line VSS can be partially separated. For example, the second power supply voltage line VSS may include a separation groove Cg, such as... Figure 11 As shown. Therefore, in a touch display device according to another embodiment of the present disclosure, noise caused by external signals can be blocked by the second power supply voltage line VSS, and the influence of the second power supply voltage line VSS on the signal applied by the peripheral line (e.g., touch wiring 330) can be minimized. Therefore, in a touch display device according to another embodiment of the present disclosure, the accuracy of sensing user and / or tool touches can be improved.

[0095] As a result, the touch display device according to the embodiments of the present disclosure may include: a packaging unit covering the light-emitting devices, touch electrodes on the packaging unit, and auxiliary lines spanning between the touch electrodes. The auxiliary lines can be electrically connected to a power supply line outside the display area where the light-emitting devices are disposed. A second emitting electrode of each light-emitting device can be electrically connected to the auxiliary lines in the display area. Therefore, in the touch display device according to the embodiments of the present disclosure, brightness deviation due to voltage drop can be prevented. Thus, image quality is improved in the touch display device according to the embodiments of the present disclosure.

[0096] Although exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and may be embodied in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the exemplary embodiments described above are illustrative in all respects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the appended claims, and all technical concepts within the equivalent scope of the appended claims should be interpreted as falling within the scope of the present disclosure.

[0097] Intersection of related applications

[0098] This application claims the benefit of Korean Patent Application No. 10-2021-0194811, filed on December 31, 2021, which is incorporated herein by reference as if fully set forth herein.

Claims

1. A touch display device, the touch display device comprising: A device substrate, the device substrate including a display area and a border area disposed outside the display area; A light-emitting device, located on the display area, comprising a first emitting electrode, a light-emitting layer, and a second emitting electrode stacked sequentially; The first dam is located on the border area and surrounds the display area; An encapsulation layer located on the light-emitting device, the encapsulation layer comprising an organic encapsulation layer located in the region defined by the first dam; A power supply line is located outside the first dam and extends along the edge of the display area; A touch sensor, located on the encapsulation layer, includes a plurality of touch electrodes; as well as An auxiliary line, electrically connected to the power supply voltage line, extends within the display area on the encapsulation layer. The auxiliary lines include a plurality of auxiliary electrodes located in the display area between the plurality of touch electrodes, and The second emitting electrode is connected to one of the plurality of auxiliary electrodes in the display area.

2. The touch display device according to claim 1, wherein, The power supply line includes a first supply line and a second supply line located on the first supply line, the second supply line comprising the same material as the plurality of touch electrodes.

3. The touch display device according to claim 1, wherein, The plurality of auxiliary electrodes comprise the same material as the plurality of touch electrodes.

4. The touch display device according to claim 3, wherein, At least a portion of each of the plurality of auxiliary electrodes is located on the same layer as the plurality of touch electrodes.

5. The touch display device according to claim 3, wherein, The touch sensor also includes multiple touch bridges that are electrically connected to the plurality of touch electrodes. The auxiliary line includes multiple auxiliary bridging components that electrically connect the plurality of auxiliary electrodes. The plurality of touch bridging components and the plurality of touch electrodes are located on the same layer, while the plurality of auxiliary bridging components and the plurality of auxiliary electrodes are located on different layers.

6. The touch display device according to claim 5, wherein, Each of the plurality of auxiliary bridges intersects with one of the plurality of touch bridges.

7. The touch display device according to claim 5, further comprising: Multiple touch pads are located on the frame area and are spaced apart from the encapsulation layer so that they do not overlap with the encapsulation layer. Multiple touch wirings extend along the surface of the encapsulation layer, and the multiple touch wirings electrically connect corresponding touch electrodes from the multiple touch electrodes to corresponding touch pads from the multiple touch pads; as well as A connecting electrode is provided, located between the power supply line and the auxiliary line, and intersecting with the plurality of touch wirings. The connecting electrode electrically connects the power supply line and the auxiliary line together. The connecting electrodes and the multiple touch wirings are located on different layers.

8. The touch display device according to claim 7, wherein, The connecting electrodes are made of the same material as the plurality of auxiliary bridging elements.

9. The touch display device according to claim 7, wherein, Each of the plurality of touch wirings includes a first wiring and a second wiring. The first wiring comprises the same material as the plurality of auxiliary bridging components, and the second wiring comprises the same material as the plurality of touch electrodes. The first wiring is spaced apart from the connecting electrode, and the second wiring is electrically connected to the first wiring at a position that does not overlap with the connecting electrode.

10. The touch display device according to claim 7, further comprising: A dummy line, electrically connected to the connecting electrode, surrounds the display area. The dummy line is made of the same material as the connecting electrode.

11. The touch display device according to claim 1, further comprising: The second dam extends parallel to the first dam. The auxiliary line is connected to the power supply line at a location between the first dam and the second dam.

12. The touch display device according to claim 11, further comprising: An outer coating, wherein the outer coating is located between the display area and the light-emitting device; A dike insulating layer is located on the outer coating layer and covers the edge of the first emitting electrode; as well as An intermediate electrode, electrically connected to the power supply line, a portion of which is located between the outer coating and the dike insulation layer. The second emitting electrode is electrically connected to the intermediate electrode through the dike insulation layer.

13. The touch display device according to claim 1, further comprising: A dam insulating layer is located on the display area, and the dam insulating layer defines a light-emitting area that emits light; as well as Spacer, the spacer being located on the dike insulation layer, The first emitting electrode, the light-emitting stack, and the second emitting electrode of the light-emitting device are stacked on the light-emitting area defined by the insulating layer, and a portion of the second emitting electrode is located on the spacer, and the portion is in contact with one of the plurality of auxiliary electrodes on the spacer to electrically connect the second emitting electrode to the auxiliary line.

14. The touch display device according to claim 13, further comprising: A conductive pattern is located on the spacer, and the conductive pattern is located between the portion of the second emitting electrode and the auxiliary line. The second emitting electrode is electrically connected to the conductive pattern.

15. The touch display device according to claim 13, wherein, The plurality of auxiliary electrodes overlap with the dike insulation layer.

16. A touch display device, the touch display device comprising: A substrate, the substrate including a display area and a border area; Multiple pixels, each pixel including a light-emitting device, the light-emitting device including a first electrode, a light-emitting layer located on the first electrode and a second electrode located on the light-emitting layer, wherein the second electrode of the first pixel among the multiple pixels is electrically connected to the second electrode of the second pixel among the multiple pixels, the second pixel being closer to the border area than the first pixel, such that the second electrode of the second pixel extends from the display area to the border area; A power supply line is located on the border area and is connected to the second electrode of the second pixel to supply power voltage to the second pixel. The power voltage is also supplied to the second electrode of the first pixel via the second electrode of the second pixel. A touch sensor, located on the plurality of pixels, comprising a plurality of touch electrodes; and An auxiliary line, located on the display area, is electrically connected to the power supply line in the bezel area. The auxiliary line includes multiple auxiliary electrodes between the plurality of touch electrodes, and Wherein, each of the second electrode of the first pixel and the second electrode of the second pixel is electrically connected in the display area to one of the plurality of auxiliary electrodes to supply the power supply voltage to the second electrode of the first pixel and the second electrode of the second pixel.

17. The touch display device according to claim 16, wherein, The plurality of auxiliary electrodes comprise the same material as the plurality of touch electrodes.

18. The touch display device according to claim 17, wherein, The plurality of auxiliary electrodes are located on the same layer as the plurality of touch electrodes.

19. The touch display device according to claim 17, wherein, The touch sensor includes multiple touch bridges that are electrically connected to the multiple touch electrodes. The auxiliary line includes multiple auxiliary bridging components that electrically connect the plurality of auxiliary electrodes. The plurality of touch bridging components and the plurality of touch electrodes are located on the same layer, while the plurality of auxiliary bridging components and the plurality of auxiliary electrodes are located on different layers.

20. The touch display device according to claim 16, further comprising: An intermediate connecting electrode is provided, comprising a first end and a second end, wherein the first end is connected to the power supply line and the second end is connected to the second electrode of the second pixel.

Images