Touch display device and method of manufacturing the same

Abstract

A touch display device and a manufacturing method thereof are provided. The touch display device can include a package unit covering a light emitting device, a touch sensor on the package unit, and a black matrix on the touch sensor. The touch sensor can include first touch electrodes arranged side by side, first bridge electrodes connecting the first touch electrodes in a first direction, second touch electrodes arranged between the first touch electrodes, and second bridge electrodes connecting the second touch electrodes in a second direction perpendicular to the first direction. The second bridge electrodes can intersect the first bridge electrodes. The second bridge electrodes can be arranged on a different layer from the second touch electrodes. For example, the second touch electrodes can be arranged on the same layer as the first touch electrodes and the first bridge electrodes. A planar shape of the black matrix can be the same as planar shapes of the first touch electrodes, the first bridge electrodes, and the second touch electrodes. Accordingly, in the touch display device, processing efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The disclosure relates to a touch display device in which a touch sensor is disposed on a light emitting device, and a manufacturing method thereof. BACKGROUND

[0002] Generally, a display device provides an image to a user. For example, the display device can include a plurality of light emitting devices. Each light emitting device can emit light of a specific color. For example, each light emitting device can include a light emitting layer between a first emission electrode and a second emission electrode.

[0003] The display device can perform a specific program or apply a specific signal through a touch of a user and / or a tool. For example, the display device can be a touch display device including a touch sensor. The touch sensor can be disposed on an encapsulation unit covering the light emitting devices. For example, the touch sensor can include first touch electrodes disposed side by side on the encapsulation unit, first bridge electrodes connecting the first touch electrodes in a first direction, second touch electrodes disposed between the first touch electrodes, and second bridge electrodes connecting the second touch electrodes in a second direction perpendicular to the first direction.

[0004] The first touch electrodes, the first bridge electrodes, the second touch electrodes, and the second bridge electrodes can include a material having a relatively low resistance. For example, the first touch electrodes, the first bridge electrodes, the second touch electrodes, and the second bridge electrodes can include a metal. The first touch electrodes, the first bridge electrodes, the second touch electrodes, and the second bridge electrodes can be disposed outside the light emitting devices.

[0005] In the touch display device, a color filter and a black matrix can be disposed on the touch sensor to prevent reflection of external light. The color filter and the black matrix can be disposed on a planarization layer covering the touch sensor. However, in the touch display device, due to the independently formed touch sensor, color filter, and black matrix, the forming process is complicated, and the processing efficiency is reduced. SUMMARY

[0006] Accordingly, the disclosure relates to a touch display device substantially obviating one or more problems due to limitations and disadvantages of the related art.

[0007] An object of the disclosure is to provide a touch display device capable of improving processing efficiency.

[0008] Another object of the disclosure is to provide a touch display device capable of simplifying a process of forming a touch sensor and a black matrix.

[0009] Additional advantages, objects, and features of the disclosure will be set forth in part in the description which follows and will in part be apparent to those of ordinary skill in the art upon examination of the following or can be learned from practice of the disclosure. The objects and other advantages of the disclosure can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0010] To achieve these objects and other advantages and in accordance with the purpose of the disclosure, as embodied and broadly described herein, a touch display device including a device substrate is provided. Light emitting devices and a package unit are disposed on a display area of the device substrate. The package unit covers the light emitting devices. A touch insulating layer is disposed on the package unit. A first touch line is disposed on the touch insulating layer. The first touch line includes a first touch electrode and a first bridge electrode. The first bridge electrode connects the first touch electrode in a first direction. A second touch line includes a second touch electrode and a second bridge electrode. The second bridge electrode is disposed between the package unit and the touch insulating layer. The second touch electrode is disposed on the same layer as the first touch electrode and the first bridge electrode. The second touch electrode is connected through the second bridge electrode in a second direction. The second direction can be perpendicular to the first direction. A black matrix is disposed on the first touch electrode, the first bridge electrode, and the second touch electrode. The first touch line, the second touch line, and the black matrix are disposed outside the light emitting devices. A planar shape of the black matrix is the same as a planar shape of the first touch electrode, the first bridge electrode, and the second touch electrode.

[0011] The black matrix can be in contact with an upper surface of each of the first touch electrodes, an upper surface of each of the first bridge electrodes, and an upper surface of each of the second touch electrodes opposite the device substrate.

[0012] The black matrix can extend onto a side surface of each of the first touch electrodes, a side surface of each of the first bridge electrodes, and a side surface of each of the second touch electrodes.

[0013] A color filter can be disposed between the package unit and the touch insulating layer. The color filter can overlap the light emitting devices.

[0014] A touch pad can be disposed on the device substrate. The touch pad can be spaced apart from the package unit. The first touch line and the second touch line can be electrically connected to the touch pad through a touch wiring. The touch wiring can extend along a surface of the package unit. The black matrix can overlap the touch wiring.

[0015] A planar shape of the black matrix between the display area and the touch pad can be the same as a planar shape of the touch wiring.

[0016] Each touch pad can include a lower pad electrode and an upper pad electrode on the lower pad electrode. The upper pad electrode can include the same material as the first touch electrode, the first bridge electrode, and the second touch electrode. An edge of an upper surface of the upper pad electrode opposite the device substrate can be covered by a black matrix.

[0017] The black matrix can extend onto a side of the upper pad electrode of each touch pad.

[0018] A touch passivation layer can be disposed on the black matrix. The touch passivation layer can include a pad opening overlapping the upper pad electrode of each touch pad. The black matrix can include a pad hole overlapping the pad opening.

[0019] A sidewall of each pad hole can be continuous with a sidewall of a corresponding pad opening.

[0020] In another embodiment, a touch display device including a device substrate is provided. A bank insulating layer is disposed on the device substrate. The bank insulating layer defines a light emitting region. A light emitting device is disposed on the light emitting region of the device substrate. An encapsulation layer is disposed on the bank insulating layer and the light emitting device. A touch sensor is disposed on the encapsulation unit. The touch sensor includes first touch electrodes and second touch electrodes. The first touch electrodes are connected in a first direction. The second touch electrodes are connected in a second direction perpendicular to the first direction. A black matrix is disposed on the first touch electrodes and the second touch electrodes. The first touch electrodes, the second touch electrodes, and the black matrix are disposed between the light emitting regions. The black matrix includes a gap overlapping a spacing region between the first touch electrodes and the second touch electrodes.

[0021] A color filter can be disposed on the touch sensor. The color filter can overlap the light emitting regions. The light emitting regions can include first light emitting regions and second light emitting regions. The second light emitting regions can implement different colors from the first light emitting regions. The color filter can include first color filters on the first light emitting regions and second color filters on the second light emitting regions. The first color filters and the second color filters can be stacked in the gap of the black matrix.

[0022] A planar shape of each of the first touch electrodes, the second touch electrodes, and the black matrix can be a mesh shape. A width of the black matrix can be smaller than a width of each of the first touch electrodes and a width of each of the second touch electrodes.

[0023] The gap of the black matrix can overlap the bank insulating layer. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings:

[0025] Figure 1 and Figure 2is a view schematically showing a touch display apparatus according to an embodiment of the present disclosure;

[0026] Figure 3 is Figure 2 is a view showing a K region in

[0027] Figure 4A is a view taken along Figure 2 of FIG. 1;

[0028] Figure 4B is a view taken along Figure 2 of FIG. 1;

[0029] Figure 4C is a view taken along Figure 3 of FIG. 1;

[0030] Figures 5A to 11C is a view sequentially showing a method of forming a touch display apparatus according to an embodiment of the present disclosure; and

[0031] Figures 12A to 20C is a view showing a touch display apparatus according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] Hereinafter, details related to the above objects, technical configurations, and operational effects of the embodiments of the present disclosure will be clearly understood through the following detailed description with reference to the accompanying drawings, which illustrate some embodiments of the present disclosure. Herein, the embodiments of the present disclosure are provided in order to enable the technical spirit of the present disclosure to be conveyed satisfactorily to those skilled in the art, and thus the present disclosure can be implemented in other forms, not limited to the embodiments described below.

[0033] In addition, throughout the specification, the same or extremely similar elements can be designated by the same reference numerals, and in the drawings, the length and thickness of the layers and regions can be exaggerated for convenience of explanation. It should be understood that when a first element is referred to as being "on" a second element, the first element can be directly on the second element or a third element can be interposed between the first element and the second element.

[0034] Herein, any one element can be distinguished from another element using terms such as, for example, "first" and "second". However, the first element and the second element can be arbitrarily named according to the convenience of those skilled in the art, without departing from the technical spirit of the present disclosure.

[0035] The terms used in the specification of the present disclosure are used only to describe particular embodiments and are not intended to limit the scope of the present disclosure. For example, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Additionally, in the specification of the present disclosure, it should also be understood that the terms "comprise" and "include" indicate the presence of the stated 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.

[0036] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0037] (Embodiments)

[0038] Figure 1 and Figure 2 is a view schematically showing a touch display apparatus according to an embodiment of the present disclosure. Figure 3 is Figure 2 is a view showing a K area in Figure 4A is a view taken along I-I' of Figure 2 Figure 4B is a view taken along II-II' of Figure 2 Figure 4C is a view taken along III-III' of Figure 3

[0039] Referring to Figures 1 to 3 and Figures 4A to 4C , a touch display apparatus according to an embodiment of the present disclosure can include a device substrate 110. The device substrate 110 can include an insulating material. For example, the device substrate 110 can include glass or plastic. The device substrate 110 can include a display area AA and a bezel area BZ disposed outside the display area AA. For example, the bezel area BZ can surround the display area AA.

[0040] ​​​The display area AA of the device substrate 110 can implement an image provided to a user. For example, a plurality of pixel areas PA can be disposed in the display area AA of the device substrate 110. The pixel areas PA can be disposed side by side in a first direction and a second direction perpendicular to the first direction. Two of the pixel areas PA adjacent in the first direction can be alternately disposed. Two of the pixel areas PA adjacent in the second direction can be alternately disposed. Each of the pixel areas PA can implement a color different from an adjacent pixel area PA. For example, the touch display apparatus according to an embodiment of the present disclosure can include a first row and a second row, a red pixel area R and a blue pixel area B alternately located in the first row, and a green pixel area G disposed in the second row. The touch display apparatus according to an embodiment of the present disclosure can have a pentile structure in which the first row and the second row are alternately repeated.

[0041] Each of the pixel areas PA can emit light displaying a specific color. For example, a pixel driving circuit and a light emitting device 130 electrically connected to the pixel driving circuit can be disposed in each of the pixel areas PA.

[0042] The pixel driving circuit can be connected to one of the gate lines GL to which a gate signal is applied and one of the data lines DL to which a data signal is applied. For example, the pixel driving circuit can generate a driving current corresponding to the data signal according to a scan signal. The driving current generated by the pixel driving circuit can be supplied to the light emitting device 130 during one frame. For example, the pixel driving circuit can include a switching thin film transistor T1, a driving thin film transistor T2, and a storage capacitor Cst.

[0043] The switching thin film transistor T1 can supply the data signal to the driving thin film transistor T2 according to the scan signal. The driving thin film transistor T2 can generate the driving current corresponding to the data signal. For example, the driving thin film transistor T2 can include a semiconductor pattern 121, a gate insulating layer 122, a gate 123, a source 124, and a drain 125.

[0044] The semiconductor pattern 121 can include a semiconductor material. For example, the semiconductor pattern 121 can include at least one of amorphous silicon, polysilicon, and an oxide semiconductor. The semiconductor pattern 121 can include a source region, a drain region, and a channel region. The channel region can be disposed between the source region and the drain region. The source region and the drain region can have lower resistance than the channel region. For example, the source region and the drain region can include a conductorized region of the oxide semiconductor.

[0045] A gate insulating layer 122 can be provided on the semiconductor pattern 121. For example, the gate insulating layer 122 can overlap the channel region of the semiconductor pattern 121. The source region and the drain region of the semiconductor pattern 121 can be provided outside the gate insulating layer 122. The gate insulating layer 122 can include an insulating material. For example, the gate insulating layer 122 can include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0046] A gate 123 can be provided on the gate insulating layer 122. For example, the gate 123 can overlap the channel region of the semiconductor pattern 121. The gate 123 can be insulated from the semiconductor pattern 121 by the gate insulating layer 122. For example, the side surface of the gate insulating layer 122 can be continuous with the side surface of the gate 123. The gate 123 can include a conductive material. For example, the gate 123 can include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), and tungsten (W). The channel region of the semiconductor pattern 121 can have an electrical conductivity corresponding to a voltage applied to the gate 123.

[0047] The source 124 can include a conductive material. For example, the source 124 can include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), or tungsten (W). The source 124 can be insulated from the gate 123. The source 124 can be provided on a different layer from the gate 123. For example, an interlayer insulating layer 112 covering the gate 123 can be provided on the device substrate 110, and the source 124 can be provided on the interlayer insulating layer 112. The interlayer insulating layer 112 can include an insulating material. For example, the interlayer insulating layer 112 can include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The source 124 can include a different material from the gate 123.

[0048] The source 124 can be electrically connected to the source region of the semiconductor pattern 121. For example, the interlayer insulating layer 112 can include a source contact hole partially exposing the source region of the semiconductor pattern 121. The source 124 can be in direct contact with the source region of the semiconductor pattern 121 through the source contact hole.

[0049] The drain 125 can include an electrically conductive material. For example, the drain 125 can include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), or tungsten (W). The drain 125 can be insulated from the gate 123. The drain 125 can be disposed on a different layer from the gate 123. For example, the drain 125 can be disposed on the interlayer insulating layer 112. The drain 125 can be disposed on the same layer as the source 124. The drain 125 can include the same material as the source 124. For example, the drain 125 can be formed at the same time as the source 124. The drain 125 can include a different material from the gate 123.

[0050] The drain 125 can be electrically connected to the drain region of the semiconductor pattern 121. For example, the interlayer insulating layer 112 can include a drain contact hole that partially exposes the drain region of the semiconductor pattern 121. The drain 125 can be in direct contact with the drain region of the semiconductor pattern 121 through the drain contact hole.

[0051] 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 can include a gate electrically connected to a corresponding gate line GL, a source electrically connected to a corresponding data line DL, and a drain electrically connected to the gate 123 of the driving thin film transistor T2. The source 124 of the driving thin film transistor T2 can be connected to a first power supply voltage supply line VDD that supplies a positive power supply voltage. The storage capacitor Cst can hold a voltage applied to the gate 123 of the driving thin film transistor T2 during one frame. For example, the storage capacitor Cst can be connected between the gate 123 and the drain 125 of the driving thin film transistor T2.

[0052] 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 can include a first emission electrode 131, a light emitting layer stack 132, and a second emission electrode 133 sequentially stacked on the device substrate 110.

[0053] The first emission electrode 131 can be electrically connected to the drain 125 of the driving thin film transistor T2. For example, a driving current generated by the pixel driving circuit can be supplied to the first emission electrode 131 of the light emitting device 130. The first emission electrode 131 can include an electrically conductive material. The first emission electrode 131 can include a material having a high reflectance. For example, the first emission electrode 131 can include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), tantalum (Ta), chromium (Cr), or tungsten (W). The first emission electrode 131 can have a multi-layer structure. For example, the first emission electrode 131 can include a structure in which a reflective electrode made of a metal is disposed between a transparent electrode made of a transparent conductive material such as ITO and IZO.

[0054] The light-emitting stack 132 can generate light having a luminance corresponding to a voltage difference between the first emission electrode 131 and the second emission electrode 133. For example, the light-emitting stack 132 can include an emission material layer (EML) having an emission material. The emission material can include an organic material, an inorganic material, or a hybrid material. For example, the touch display apparatus according to an embodiment of the present disclosure can be an organic light-emitting display apparatus including an organic emission material.

[0055] The light-emitting stack 132 can have a multi-layer structure. For example, the light-emitting stack 132 can 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 can include a plurality of emission material layers. For example, the light-emitting stack 132 can include a charge generation layer (CGL) between a first emission material layer and a second emission material layer. The second emission material layer can include a different material from the first emission material layer.

[0056] The second emission electrode 133 can include a conductive material. The second emission electrode 133 can have a higher transmittance than the first emission electrode 131. For example, the second emission electrode 133 can be a transparent electrode made of a transparent conductive material. The second emission electrode 133 can include a transparent conductive oxide such as ITO, IZO, and AZO. Accordingly, in the touch display apparatus according to an embodiment of the present disclosure, light generated by the light-emitting stack 132 of each pixel area PA can be emitted to the outside through the second emission electrode 133 of the corresponding pixel area PA.

[0057] The device buffer layer 111 can be disposed between the device substrate 110 and the pixel driving circuit of each pixel area PA. The device buffer layer 111 can prevent contamination due to the device substrate 110 in a process of forming the pixel driving circuit. The device buffer layer 111 can extend onto the bezel area BZ of the device substrate 110. For example, an upper surface of the device substrate 110 facing the pixel driving circuit of each pixel area PA can be completely covered by the device buffer layer 111. The device buffer layer 111 can include an insulating material. For example, the device buffer layer 111 can include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The device buffer layer 111 can have a multi-layer structure. For example, the device buffer layer 111 can have a stacked structure of an inorganic insulating layer made of silicon oxide (SiO) and an inorganic insulating layer made of silicon nitride (SiN).

[0058] A planarization layer 113 can be disposed between the pixel driving circuit and the light emitting device 130 of each pixel area PA. The planarization layer 113 can remove a thickness difference due to the pixel driving circuit of each pixel area PA. For example, an upper surface of the planarization layer 113 opposite the device substrate 110 can be a flat surface. The switching thin film transistor T1, the driving thin film transistor T2, and the storage capacitor Cst in each pixel area PA can be covered by the planarization layer 113. The planarization layer 113 can include an insulating material. The planarization layer 113 can include a different material from the interlayer insulating layer 112. For example, the planarization layer 113 can include an organic insulating material.

[0059] The first emission electrode 131 of each pixel area PA can be electrically connected to the pixel driving circuit of the corresponding pixel area PA by penetrating the planarization layer 113. For example, the planarization layer 113 can include a pixel contact hole that partially exposes the drain 125 of the driving thin film transistor T2 in each pixel area PA. The first emission electrode 131 of each pixel area PA can be in direct contact with the drain 125 of the driving thin film transistor T2 in the corresponding pixel area PA through one of the pixel contact holes.

[0060] The first emission electrode 131 of each pixel area PA can be insulated from the first emission electrode 131 of an adjacent pixel area PA. The first emission electrode 131 of each pixel area PA can be spaced apart from the first emission electrode 131 of an adjacent pixel area PA. For example, a bank insulating layer 114 can be disposed between the first emission electrode 131 of adjacent pixel areas PA. The bank insulating layer 114 can include an insulating material. For example, the bank insulating layer 114 can include an organic insulating material. The bank insulating layer 114 can cover edges of the first emission electrode 131 in each pixel area PA. The light emitting stack 132 and the second emission electrode 133 of each pixel area PA can be stacked on portions of the corresponding first emission electrode 131 exposed by the bank insulating layer 114. For example, the bank insulating layer 114 can define the light emitting areas BEA, GEA, and REA in each pixel area PA.

[0061] The light emitting device 130 of each pixel area PA can have the same structure as the light emitting device 130 of an adjacent pixel area PA. For example, the light emitting stack 132 of each pixel area PA can be connected to the light emitting stack 132 of an adjacent pixel area PA by extending along a surface of the bank insulating layer 114. Light emitted from the light emitting device 130 of each pixel area PA can display the same color as light emitted from the light emitting device 130 of an adjacent pixel area PA. For example, the light emitting stack 132 of each pixel area PA can generate white light. The light emitting stack 132 of each pixel area PA can be formed at the same time as the light emitting stack 132 of an adjacent pixel area PA. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, a process of forming the light emitting stack 132 on each pixel area PA can be simplified.

[0062] The voltage applied to the second emission electrode 133 of each pixel area PA can be the same as the voltage applied to the second emission electrode 133 of an adjacent pixel area PA. For example, the second emission electrode 133 of each pixel area PA can be electrically connected to a second power voltage supply line VSS that supplies a negative power voltage. Accordingly, in the touch display device according to the embodiment of the disclosure, the brightness of light emitted from the light emitting device 130 of each pixel area PA can be adjusted by a data signal applied to the corresponding pixel area PA. The second emission electrode 133 of each pixel area PA can be electrically connected to the second emission electrode 133 of an adjacent pixel area PA. For example, the second emission electrode 133 of each pixel area PA can be in direct contact with the second emission electrode 133 of an adjacent pixel area PA. The second emission electrode 133 of each pixel area PA can be formed at the same time as the second emission electrode 133 of an adjacent pixel area PA. Accordingly, in the touch display device according to the embodiment of the disclosure, the process of forming the second emission electrode 133 on each pixel area PA can be simplified.

[0063] 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 130 of each pixel area PA can be completely covered by the encapsulation unit 140. For example, the encapsulation unit 140 can extend onto the bezel area BZ of the device substrate 110.

[0064] The encapsulation unit 140 can include at least one inorganic encapsulation layer 141 and 143 and at least one organic encapsulation layer 142. For example, the encapsulation unit 140 can 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 can be the inorganic encapsulation layers 141 and 143. For example, the upper surface and side surface of the organic encapsulation layer 142 can be covered by the inorganic encapsulation layers 141 and 143. Accordingly, in the touch display device according to the embodiment of the disclosure, the penetration of external moisture and oxygen can be effectively prevented.

[0065] The inorganic encapsulation layers 141 and 143 can include an inorganic insulating material. For example, the inorganic encapsulation layers 141 and 143 can 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 the touch display device according to the embodiment of the disclosure, damage to the light emitting stack 132 due to the process of forming the inorganic encapsulation layers 141 and 143 can be prevented or at least reduced.

[0066] The organic encapsulation layer 142 can mitigate stress due to the inorganic encapsulation layers 141 and 143. For example, the organic encapsulation layer 142 can include an organic insulating material such as an acrylic resin, an epoxy resin, a polyimide, a polyethylene, and silicon oxycarbide (SiOC). A thickness difference due to the light emitting device 130 can be removed by the organic encapsulation layer 142. For example, an upper surface of the organic encapsulation layer 142 opposite the device substrate 110 can be a flat surface.

[0067] The organic encapsulation layer 142 can be formed by an inkjet method. For example, at least one dam 106 can be disposed on the bezel area 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 edges of the display area AA. For example, in the touch display apparatus according to an embodiment of the disclosure, the organic encapsulation layer 142 can be formed in an area defined by the dam 106. The dam 106 can be formed using a process of forming at least one of the insulating layers disposed between the device substrate 110 and the encapsulation unit 140. For example, the dam 106 can be formed simultaneously with the planarization layer 113. The dam 106 can include the same material as the planarization layer 113. For example, the dam 106 can include an organic insulating material. The interlayer insulating layer 112 can extend onto the bezel area 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 planarization layer 113.

[0068] The touch sensor Cm can be disposed on the encapsulation unit 140. The touch sensor Cm can sense a touch of a user and / or a tool. For example, the touch sensor Cm can detect the presence or absence of a touch and the position of the touch by a change in mutual capacitance. The touch sensor Cm can include a first touch line 310 and a second touch line 320.

[0069] A touch driving signal can be applied to the first touch line 310. For example, the first touch line 310 can function as a touch driving line. The first touch line 310 can include first touch electrodes 311 and first bridge electrodes 312. The first touch electrodes 311 can be disposed side by side on the encapsulation unit 140. The first bridge electrodes 312 can be electrically connected between the first touch electrodes 311. Each of the first bridge electrodes 312 can extend in a first direction. For example, each of the first touch electrodes 311 can be connected to an adjacent first touch electrode 311 in the first direction by one of the first bridge electrodes 312.

[0070] The first touch electrode 311 can include a conductive material. For example, the first touch electrode 311 can include a material having a relatively low resistance. For example, the first touch electrode 311 can include a metal such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). Each of the first touch electrodes 311 can have a multi-layer structure. For example, the first touch electrode 311 can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0071] The first bridge electrode 312 can include a conductive material. The first bridge electrode 312 can include a material having a relatively low resistance. For example, the first bridge electrode 312 can include a metal such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). The first bridge electrode 312 can include the same material as the first touch electrode 311. Each of the first bridge electrodes 312 can have a multi-layer structure. For example, the first bridge electrode 312 can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. The first bridge electrode 312 can have the same structure as the first touch electrode 311. The first bridge electrode 312 can be disposed on the same layer as the first touch electrode 311. For example, each of the first bridge electrodes 312 can be in direct contact with the first touch electrode 311.

[0072] The second touch line 320 can include the second touch electrode 321 and the second bridge electrode 322. The second touch electrode 321 can be disposed side by side on the package unit 140. The second touch electrode 321 can be disposed on the same layer as the first touch electrode 311. The second touch electrode 321 can be insulated from the first touch electrode 311. For example, the second touch electrode 321 can be disposed between the first touch electrodes 311. The second touch electrode 321 can have the same shape as the first touch electrode 311. For example, the first touch electrode 311 and the second touch electrode 321 can be alternately disposed on the package unit 140. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, the electric charge charged by the touch driving signal can be discharged through the second touch line 320. Accordingly, the touch display apparatus according to the embodiment of the disclosure can detect a touch of a user and / or a tool and a position of the touch using the touch sensor Cm.

[0073] The second touch electrode 321 can include a conductive material. The second touch electrode 321 can include a material having a relatively low resistance. For example, the second touch electrode 321 can include a metal such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). Each of the second touch electrodes 321 can have a multi-layer structure. For example, the second touch electrode 321 can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0074] The second touch electrode 321 can be disposed on the same layer as the first touch electrode 311 and the first bridge electrode 312. The second touch electrode 321 can be insulated from the first bridge electrode 312. The second touch electrode 321 can be spaced apart from the first bridge electrode 312. For example, the first bridge electrode 312 can cross between the second touch electrodes 321.

[0075] The second bridge electrode 322 can be electrically connected between the second touch electrodes 321. Each second bridge electrode 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 through one of the second bridge electrodes 322. The second direction can be different from the first direction. For example, the second direction can be perpendicular to the first direction. The second bridge electrode 322 can cross between the first touch electrodes 311. For example, each second bridge electrode 322 can intersect one of the first bridge electrodes 312. The second bridge electrode 322 can be insulated from the first bridge electrode 312. The second bridge electrode 322 can be disposed on a different layer from the first bridge electrode 312. For example, the touch sensor Cm can include a touch insulating layer 350 disposed on the second bridge electrode 322, and the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321 can be disposed on the touch insulating layer 350.

[0076] The touch insulating layer 350 can include an insulating material. For example, the touch insulating layer 350 can include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The touch insulating layer 350 can include a touch contact hole partially exposing each second bridge electrode 322. Each second touch electrode 321 can be connected to a corresponding second bridge electrode 322 through one of the touch contact holes.

[0077] The second bridge electrode 322 can include a conductive material. The second bridge electrode 322 can include a material having a relatively low resistance. For example, the second bridge electrode 322 can include a metal such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). Each second bridge electrode 322 can have a multi-layer structure. For example, the second bridge electrode 322 can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo.

[0078] The first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, and the second bridge electrode 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 bridge electrode 312, the second touch electrode 321, and the second bridge electrode 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 bridge electrode 312, the second touch electrode 321, and the second bridge electrode 322 can overlap the bank insulating layer 114. The planar shape of each first touch electrode 311 and the planar shape of each second touch electrode 321 can be a mesh shape including an opening overlapping the light emitting areas BEA, GEA, and REA of each pixel area PA. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, the accuracy of touch sensing using the touch sensor Cm can be improved, and a decrease in light extraction efficiency due to the first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, and the second bridge electrode 322 of the touch sensor Cm can be reduced.

[0079] The touch buffer layer 200 can be disposed between the encapsulation unit 140 and the touch sensor Cm. For example, the second bridge electrode 322 can be disposed between the touch buffer layer 200 and the touch insulating layer 350. The touch buffer layer 200 can reduce a parasitic capacitance generated between the second emission electrode 133 of each light emitting device 130 and the touch sensor Cm. For example, the distance between the first touch line 310 of the touch sensor Cm and the second emission electrode 133 of each light emitting device 130 and the distance between the second touch line 320 of the touch sensor Cm and the second emission electrode 133 of each light emitting device 130 can be increased by the touch buffer layer 200. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, the accuracy of touch sensing of the touch sensor Cm can be improved. The touch buffer layer 200 can include an insulating material. For example, the touch buffer layer 200 can include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0080] The black matrix 410 can be disposed on the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321 of the touch sensor Cm. The black matrix 410 can overlap the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321. For example, the upper surface of each first touch electrode 311, the upper surface of each first bridge electrode 312, and the upper surface of each second touch electrode 321 opposite the device substrate 110 can be covered by the black matrix 410. The black matrix 410 can be in direct contact with the upper surface of each first touch electrode 311, the upper surface of each first bridge electrode 312, and the upper surface of each second touch electrode 321. The planar shape of the black matrix 410 in the display area AA of the device substrate 110 can be the same as the planar shape of the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321. For example, the side surface of the black matrix 410 can be continuous with the side surface of each first touch electrode 311, the side surface of each first bridge electrode 312, and the side surface of each second touch electrode 321. The black matrix 410 can be disposed outside the light emitting device 130. For example, the planar shape of the black matrix 410 can be a grid shape. The black matrix 410 can include a gap 410g overlapping the spaced region between the first touch electrode 311 and the second touch electrode 321.

[0081] The black matrix 410 can block light. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, external light traveling toward the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321 can be blocked by the black matrix 410. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, reflection of external light by the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321 of the touch sensor Cm can be prevented or at least reduced.

[0082] The color filters 420b, 420g, and 420r overlapping the light emitting areas BEA, GEA, and REA can be disposed on the encapsulation unit 140. The color filters 420b, 420g, and 420r can overlap the light emitting device 130. For example, light generated by each light emitting device 130 can be emitted to the outside through one of the color filters 420b, 420g, and 420r. Each of the color filters 420b, 420g, and 420r can include a material different from that of the adjacent color filters 420b, 420g, and 420r. For example, the blue color filter 420b can be disposed on the blue light emitting area BEA of the blue pixel area B, the green color filter 420g can be disposed on the green light emitting area GEA of the green pixel area G, and the red color filter 420r can be disposed on the red light emitting area REA of the red pixel area R. Accordingly, the touch display apparatus according to the embodiment of the disclosure can provide a user with an image made of various colors using white emitted from the light emitting device 130 of each pixel area PA and the color filters 420b, 420g, and 420r.

[0083] The color filters 420b, 420g, and 420r can be disposed in openings of the first touch electrode 311 and the second touch electrode 321 having a grid shape. For example, the black matrix 410 can surround the color filters 420b, 420g, and 420r. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, external light not blocked by the black matrix 410 can be emitted to the light emitting device 130 through one of the color filters 420b, 420g, and 420r. Also, in the touch display apparatus according to the embodiment of the disclosure, external light reflected by the first emission electrode 131 of each light emitting device 130 can be emitted to the outside through the color filter 420b, 420g, and 420r overlapping the corresponding light emitting device 130. That is, in the touch display apparatus according to the embodiment of the disclosure, external light reflected by the first emission electrode 131 of each light emitting device 130 can display the same color as light emitted from the corresponding light emitting device 130. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, without using a polarizing plate, image deterioration due to reflection of external light can be prevented or at least reduced.

[0084] The touch passivation layer 500 can be disposed on the black matrix 410 and the color filters 420b, 420g, and 420r. The touch passivation layer 500 can prevent or at least reduce damage to the touch sensor Cm, the black matrix 410, and the color filters 420b, 420g, and 420r due to external impact and / or moisture. The touch passivation layer 500 can extend beyond the display area AA. For example, the first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, the black matrix 410, and the color filters 420b, 420g, and 420r can be completely covered by the touch passivation layer 500. The touch passivation layer 500 can include an insulating material. The touch passivation layer 500 can include a different material from the touch insulating layer 350. For example, the touch passivation layer 500 can include an organic insulating material. A thickness difference due to the first touch line 310, the second touch line 320, the black matrix 410, and the color filters 420b, 420g, and 420r can be removed by the touch passivation layer 500.

[0085] The cover element 600 can be disposed on the touch passivation layer 500. The cover element 600 can prevent or at least reduce damage due to external impact. The cover element 600 can be in direct contact with the touch passivation layer 500. For example, the cover element 600 can include a cover adhesive layer 610 and a cover window 620.

[0086] The cover adhesive layer 610 can include an adhesive material. The cover adhesive layer 610 can include a transparent material. For example, the cover adhesive layer 610 can include an optical clear adhesive (OCA). The cover adhesive layer 610 can mitigate reflection of external light. For example, the cover adhesive layer 610 can include a dye.

[0087] The cover window 620 can be attached to the touch passivation layer 500 through the cover adhesive layer 610. The cover window 620 can include a transparent material. The cover window 620 can have a hardness greater than or equal to a certain level. For example, the cover window 620 can include glass or plastic.

[0088] 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 can include a pad area PD in which the display pad 104 and the touch pad 304 are disposed. The dam 106 can be disposed between the display area AA and the pad area PD. For example, the display pad 104 and the touch pad 304 can be spaced apart from the encapsulation unit 140. Accordingly, in the touch display device according to the embodiment of the disclosure, it is possible to prevent a portion of the display pad 104 and the touch pad 304 from being inadvertently covered by the organic encapsulation layer 142. Accordingly, in the touch display device according to the embodiment of the disclosure, it is possible to prevent distortion of signals transmitted through the display pad 104 and the touch pad 304.

[0089] The gate line GL and / or the data line DL can be electrically connected to the display pad 104. For example, a data signal applied to each pixel area PA can be transmitted through one of the display pads 104 and one of the data lines DL. Each display pad 104 can include a first lower pad electrode 104a and a first upper pad electrode 104b on the first lower pad electrode 104a. The display pad 104 can be formed using a process of forming a pixel driving circuit, a light emitting device 130, and a touch sensor cm. For example, the first lower pad electrode 104a can include the same material as the source 124 and the drain 125 of each pixel driving circuit, and the first upper pad electrode 104b can include the same material as the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321.

[0090] The touch pads 304 can be disposed side by side with the display pads 104. For example, the pad area PD can be disposed to flank the display area AA. The touch pads 304 can have the same structure as the display pads 104. For example, each of the touch pads 304 can include a second lower pad electrode 304a and a second upper pad electrode 304b on the second lower pad electrode 304a. The touch pads 304 can be formed at the same time as the display pads 104. For example, the second lower pad electrode 304a can include the same material as the first lower pad electrode 104a, and the second upper pad electrode 304b can include the same material as the first upper pad electrode 104b.

[0091] The touch pads 304 can be electrically connected to the first touch lines 310 and the second touch lines 320 through the touch wires 330. For example, a touch driving signal can be applied to the first touch lines 310 through one of the touch pads 304 and one of the touch wires 330, and a charge charged by the touch driving signal can be discharged through the second touch lines 320, one of the touch wires 330, and one of the touch pads 304.

[0092] The touch wires 330 can be formed using the process of forming the touch sensor Cm. For example, each of the touch wires 330 can have a stacked structure of a lower wire 331 including the same material as the second bridge electrode 322 and an upper wire 332 including the same material as the first bridge electrode 312. The upper wire 332 of each of the touch wires 330 can be electrically connected to the lower wire 331 of the corresponding touch wire 330. For example, the touch insulating layer 350 can include a wire contact hole partially exposing the lower wire 331 of each of the touch wires 330. The upper wire 332 of each of the touch wires 330 can be in direct contact with the lower wire 331 of the corresponding touch wire 330 through the wire contact hole. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, the first touch lines 310 and the second touch lines 320 can be stably connected to the corresponding touch pads 304 through the touch wires 330. Also, in the touch display apparatus according to the embodiment of the disclosure, the resistance of each of the touch wires 330 can be reduced. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, signal delay caused by the touch wires 330 can be minimized.

[0093] The device buffer layer 111, the interlayer insulating layer 112, the touch buffer layer 200, the touch insulating layer 350, the black matrix 410, and the touch passivation layer 500 can extend onto the pad area PD of the device substrate 110. For example, the first lower pad electrode 104a and the second lower pad electrode 304a can be disposed on the interlayer insulating layer 112, and the touch buffer layer 200 and the touch insulating layer 350 can include pad contact holes partially exposing the first lower pad electrode 104a of each display pad 104 and the second lower pad electrode 304a of each touch pad 304. The first upper pad electrode 104b of each display pad 104 can be electrically connected to the first lower pad electrode 104a of the corresponding display pad 104 through one of the pad contact holes, and the second upper pad electrode 304b of each touch pad 304 can be electrically connected to the second lower pad electrode 304a of the corresponding touch pad 304 through one of the pad contact holes.

[0094] The black matrix 410 can overlap the touch wiring 330. For example, the upper surface of each touch wiring 330 opposite the device substrate 110 can be covered by the black matrix 410. The black matrix 410 can extend parallel to the touch wiring 330. For example, the planar shape of the black matrix 410 between the display area AA and the pad area PD can be the same as the planar shape of the touch wiring 330. The black matrix 410 can be in direct contact with the touch wiring 330. For example, the side surface of the upper wiring 332 of each touch wiring 330 can be continuous with the side surface of the black matrix 410.

[0095] The touch passivation layer 500 can include a first pad opening 501h overlapping a central region of the first upper pad electrode 104b of each display pad 104 and a second pad opening 502h overlapping a central region of the second upper pad electrode 304b of each touch pad 304. The black matrix 410 can include a first pad hole 411h overlapping the first pad opening 501h and a second pad hole 412h overlapping the second pad opening 502h. For example, the first upper pad electrode 104b of each display pad 104 can be partially exposed by one of the first pad holes 411h and one of the first pad openings 501h, and the second upper pad electrode 304b of each touch pad 304 can be partially exposed by one of the second pad holes 412h and one of the second pad openings 502h. Each of the first upper pad electrode 104b and the second upper pad electrode 304b can include an upper surface opposite the device substrate 110, and the black matrix 410 and the touch passivation layer 500 can be laminated on edges of the upper surface of the first upper pad electrode 104b of each display pad 104 and edges of the upper surface of the second upper pad electrode 304b of each touch pad 304. The black matrix 410 can include a material having a greater adhesive force to the first upper pad electrode 104b and the second upper pad electrode 304b than the touch passivation layer 500. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, peeling of the touch passivation layer 500 covering the edges of the first upper pad electrode 104b of each display pad 104 and the edges of the second upper pad electrode 304b of each touch pad 304 can be prevented by the black matrix 410. Accordingly, in the touch display apparatus according to the embodiment of the disclosure, penetration of external moisture through the edges of the first upper pad electrode 104b of each display pad 104 and the edges of the second upper pad electrode 304b of each touch pad 304 can be prevented.

[0096] Figures 5A to 11C FIGS. 1 to 5 are sequential views illustrating a method of forming a touch display apparatus according to an embodiment of the disclosure.

[0097] A method of forming a touch display apparatus according to an embodiment of the disclosure will be described with reference to Figures 1 to 3 , Figures 4A to 11C A method of forming a touch display apparatus according to an embodiment of the disclosure will be described with reference to

[0098] The device substrate 110 may include a display area AA and a border area BZ disposed outside the display area AA. An insulating layer 114 may define light-emitting areas BEA, GEA, and REA in the display area AA. The border area BZ may include a pad area PD. Pixel driving circuits and light-emitting devices 130 may be formed on the display area AA of the device substrate 110. A first lower pad electrode 104a and a second lower pad electrode 304a may be formed in the pad area PD. The device buffer layer 111 and the interlayer insulating layer 112 may extend to the border area BZ of the device substrate 110. For example, the first lower pad electrode 104a and the second lower pad electrode 304a may be formed on the interlayer insulating layer 112. The first lower pad electrode 104a and the second lower pad electrode 304a may be formed using the same process as forming a pixel driving circuit. For example, the first lower pad electrode 104a and the second lower pad electrode 304a may be formed simultaneously with the source 124 and drain 125 of the driving thin-film transistor T2 of each pixel driving circuit.

[0099] Package unit 140 can be formed in the area defined by dam 106. Dam 106 can be formed between display area AA and pad area PD. For example, the first lower pad electrode 104a and the second lower pad electrode 304a formed in pad area PD can be spaced apart from package unit 140.

[0100] like Figures 6A to 6C As shown, the method for forming a touch display device according to an embodiment of the present disclosure may include the steps of forming a touch buffer layer 200 on a device substrate 110 in which a packaging unit 140, a first lower pad electrode 104a and a second lower pad electrode 304a are formed, and forming a second bridging electrode 322 and a lower wiring 331 on the touch buffer layer 200.

[0101] The touch buffer layer 200 may cover the first lower pad electrode 104a and the second lower pad electrode 304a. For example, the step of forming the touch buffer layer 200 may include depositing an inorganic insulating material on the entire surface of the device substrate 110 in which the package unit 140, the first lower pad electrode 104a and the second lower pad electrode 304a are formed.

[0102] A second bridging electrode 322 can be formed on the display area AA of the device substrate 110. The second bridging electrode 322 can be formed outside the light-emitting areas BEA, GEA, and REA. For example, the second bridging electrode 322 can overlap with the insulating layer 114. A lower wiring 331 can be formed between the display area AA and the second bridging electrode 322. The lower wiring 331 can be formed simultaneously with the second bridging electrode 322. For example, the steps of forming the second bridging electrode 322 and the lower wiring 331 may include forming a conductive material layer on the touch buffer layer 200 and patterning the conductive material layer. The lower wiring 331 may contain the same material as the second bridging electrode 322.

[0103] The lower wiring 331 and the second bridging electrode 322 can be formed of metals such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). The lower wiring 331 and the second bridging electrode 322 can have a multilayer structure. For example, the lower wiring 331 and the second bridging electrode 322 can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. The lower wiring 331 can have the same stacked structure as the second bridging electrode 322.

[0104] like Figures 7A to 7C As shown, the method for forming a touch display device according to an embodiment of the present disclosure may include the step of forming a touch insulating layer 350 on a device substrate 110 in which a second bridging electrode 322 and a lower wiring 331 are formed.

[0105] The touch insulating layer 350 may expose a portion of each second bridging electrode 322. The touch insulating layer 350 may partially expose each lower wiring 331. The touch insulating layer 350 may expose a portion of each first lower pad electrode 104a and a portion of each second lower pad electrode 304a. For example, the step of forming the touch insulating layer 350 may include the step of forming an insulating layer on the display area AA and the border area BZ of the device substrate 110 and the step of patterning the insulating layer.

[0106] The step of exposing a portion of each first lower pad electrode 104a and a portion of each second lower pad electrode 304a may include forming pad contact holes that penetrate the touch buffer layer 200 and the touch insulating layer 350. For example, the pad contact holes may be formed by etching the touch insulating layer 350 and the touch buffer layer 200 onto a portion of each first lower pad electrode 104a and a portion of each second lower pad electrode 304a.

[0107] like Figures 8A to 8CAs shown in FIG. 1, the method of forming a touch display apparatus according to an embodiment of the present disclosure can include a step of forming a touch conductive layer 300a on a device substrate 110 in which a touch insulating layer 350 is formed, and a step of forming a black material layer 400a on the touch conductive layer 300a.

[0108] The touch conductive layer 300a can be formed of a conductive material. The touch conductive layer 300a can be formed of a material having a relatively low resistance. For example, the touch conductive layer 300a can be formed of a metal such as titanium (Ti), copper (Cu), molybdenum (Mo), and tantalum (Ta). The touch conductive layer 300a can have a multi-layer structure. For example, the touch conductive layer 300a can have a three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, and Ti / Al / Mo. A portion of each second bridge electrode 322, a portion of each lower wire 331, a portion of each first lower pad electrode 104a, and a portion of each second lower pad electrode 304a exposed by the touch insulating layer 350 can be in direct contact with the touch conductive layer 300a.

[0109] The black material layer 400a can be formed of a material capable of blocking light. For example, the black material layer 400a can include a black dye such as carbon black.

[0110] As shown in FIG. 1, the method of forming a touch display apparatus according to an embodiment of the present disclosure can include a step of forming a touch conductive layer 300a on a device substrate 110 in which a touch insulating layer 350 is formed, and a step of forming a black material layer 400a on the touch conductive layer 300a. Figures 9A to 9C As shown in FIG. 1, the method of forming a touch display apparatus according to an embodiment of the present disclosure can include a step of forming a touch conductive layer 300a on a device substrate 110 in which a touch insulating layer 350 is formed, and a step of forming a black material layer 400a on the touch conductive layer 300a.

[0111] The first touch electrodes 311, the first bridge electrodes 312, and the second touch electrodes 321 can be formed on the display area AA of the device substrate 110. The first touch electrodes 311, the first bridge electrodes 312, and the second touch electrodes 321 can be formed outside the light emitting areas BEA, GEA, and REA. For example, the first touch electrodes 311, the first bridge electrodes 312, and the second touch electrodes 321 can overlap the bank insulating layer 114. The first touch electrodes 311 can be in direct contact with the first bridge electrodes 312. For example, the first touch electrodes 311 can be connected by the first bridge electrodes 312 in a first direction to form first touch lines. The second touch electrodes 321 can be spaced apart from the first touch electrodes 311. Each of the second touch electrodes 321 can be connected to one of the second bridge electrodes 322. For example, the second touch electrodes 321 can be connected by the second bridge electrodes 322 in a second direction perpendicular to the first direction to form second touch lines.

[0112] The first upper pad electrode 104b and the second upper pad electrode 304b can be formed on the pad region PD of the device substrate 110. The second upper pad electrode 304b can be spaced apart from the first upper pad electrode 104b. Each of the first upper pad electrodes 104b can be connected to one of the first lower pad electrodes 104a through one of the pad contact holes. For example, each of the first lower pad electrodes 104a and the first upper pad electrodes 104b connected to the respective first lower pad electrodes 104a can form a display pad 104. Each of the second upper pad electrodes 304b can be connected to one of the second lower pad electrodes 304a through one of the pad contact holes. For example, each of the second lower pad electrodes 304a and the second upper pad electrodes 304b connected to the respective second lower pad electrodes 304a can form a touch pad 304.

[0113] The upper wire 332 can be formed between the display region AA and the pad region PD. Each of the upper wires 332 can be connected to one of the lower wires 331. For example, each of the lower wires 331 and the upper wires 332 connected to the respective lower wires 331 can form a touch wire 330 extending along a surface of the package unit 140.

[0114] The first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, the upper wire 332, the first upper pad electrode 104b, and the second upper pad electrode 304b can be formed using the touch conductive layer 300a. For example, the upper wire 332, the first upper pad electrode 104b, and the second upper pad electrode 304b can be formed simultaneously with the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321. Each of the upper wires 332 can be in direct contact with one of the second upper pad electrodes 304b. The black matrix layer 400a can be used to form the black matrix 410. For example, the steps of forming the first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, the upper wire 332, the first upper pad electrode 104b, the second upper pad electrode 304b, and the black matrix 410 can include the steps of sequentially patterning the black matrix layer 400a and the touch conductive layer 300a.

[0115] A single mask pattern can be used to form the first touch electrode 311, the first bridging electrode 312, the second touch electrode 321, the upper wiring 332, the first upper pad electrode 104b, the second upper pad electrode 304b, and the black background 410. For example, the steps of forming the first touch electrode 311, the first bridging electrode 312, the second touch electrode 321, the upper wiring 332, the first upper pad electrode 104b, the second upper pad electrode 304b, and the black background 410 may include forming a mask pattern on a black material layer 400a, forming the black background 410 by etching a portion of the black material layer 400a exposed by the mask pattern, and forming the first touch electrode 311, the first bridging electrode 312, the second touch electrode 321, the upper wiring 332, the first upper pad electrode 104b, and the second upper pad electrode 304b by removing a portion of the touch conductive layer 300a exposed by the black background 410.

[0116] The side surface of the black background 410 may be continuous with the side surface of each first touch electrode 311, each first bridging electrode 312, each second touch electrode 321, each upper wiring 332, each first upper pad electrode 104b, and each second upper pad electrode 304b. For example, the planar shape of the black background 410 in the display area AA of the device substrate 110 may be the same as the planar shape of the first touch electrode 311, the first bridging electrode 312, and the second touch electrode 321. The black background 410 in the display area AA may include a gap 410g overlapping with the spacing region between the first touch electrode 311 and the second touch electrode 321.

[0117] The planar shape of the black background 410 between the display area AA and the pad area PD can be the same as the planar shape of the touch wiring 330. The side of the black background 410 on the pad area PD of the device substrate 110 can be flush with the side of each first upper pad electrode 104b and the side of each second upper pad electrode 304b.

[0118] like Figures 10A to 10C As shown, the method for forming a touch display device according to an embodiment of the present disclosure may include the steps of forming color filters 420b, 420g and 420r on a device substrate 110 in which a black background 410 is formed, and forming a touch passivation layer 500 on the device substrate 110 in which color filters 420b, 420g and 420r are formed.

[0119] The color filters 420b, 420g, and 420r can be formed on the light emitting regions BEA, GEA, and REA. For example, each of the light emitting devices 130 can overlap with one of the color filters 420b, 420g, and 420r. Each of the color filters 420b, 420g, and 420r can be formed of a material corresponding to a color displayed by the corresponding light emitting region BEA, GEA, and REA. For example, the light emitting regions BEA, GEA, and REA can include a blue light emitting region BEA displaying blue, a green light emitting region GEA displaying green, and a red light emitting region REA displaying red, and the steps of forming the color filters 420b, 420g, and 420r can include a step of forming a green color filter 420g on the green light emitting region GEA, a step of forming a red color filter 420r on the red light emitting region REA, and a step of forming a blue color filter 420b on the blue light emitting region BEA.

[0120] Each of the color filters 420b, 420g, and 420r can be formed to have a size corresponding to the corresponding pixel region PA. For example, the color filters 420b, 420g, and 420r can not be formed in the gap region between the gap 410g of the black matrix 410 and the first and second touch electrodes 311 and 321.

[0121] The touch passivation layer 500 can be formed on the black matrix 410 and the color filters 420b, 420g, and 420r. The black matrix 410 and the color filters 420b, 420g, and 420r can be completely covered by the touch passivation layer 500. The touch passivation layer 500 can remove a thickness difference on the display region AA due to the black matrix 410 and the color filters 420b, 420g, and 420r. For example, the step of forming the touch passivation layer 500 can include a step of depositing an organic insulating material on the entire surface of the device substrate 110 in which the black matrix 410 and the color filters 420b, 420g, and 420r are formed.

[0122] As shown in FIG. 4B, the black matrix 410 and the color filters 420b, 420g, and 420r can be formed on the display region AA of the device substrate 110. The black matrix 410 can be formed on the display region AA of the device substrate 110. The color filters 420b, 420g, and 420r can be formed on the light emitting regions BEA, GEA, and REA of the device substrate 110. Figures 11A to 11C As shown in FIG. 4B, the black matrix 410 and the color filters 420b, 420g, and 420r can be formed on the display region AA of the device substrate 110. The black matrix 410 can be formed on the display region AA of the device substrate 110. The color filters 420b, 420g, and 420r can be formed on the light emitting regions BEA, GEA, and REA of the device substrate 110.

[0123] The first pad opening 501h overlapping with a central region of the first upper pad electrode 104b of each of the display pads 104 and the second pad opening 502h overlapping with a central region of the second upper pad electrode 304b of each of the touch pads 304 can be formed in the touch passivation layer 500. The first pad hole 411h overlapping with the first pad opening 501h and the second pad hole 412h overlapping with the second pad opening 502h can be formed in the black matrix 410.

[0124] The first pad hole 411h and the second pad hole 412h of the black matrix 410 and the first pad opening 501h and the second pad opening 502h of the touch passivation layer 500 can be formed by a single mask pattern. For example, the step of partially exposing the display pad 104 and the touch pad 304 can include a step of forming a mask pattern on the touch passivation layer 500, a step of forming the first pad opening 501h and the second pad opening 502h by etching a portion of the touch passivation layer 500 exposed by the mask pattern, and a step of forming the first pad hole 411h and the second pad hole 412h by removing a portion of the black matrix 410 exposed by the first pad opening 501h and the second pad opening 502h. The sidewall of each first pad hole 411h can be continuous with the sidewall of the corresponding first pad opening 501h, and the sidewall of each second pad hole 412h can be continuous with the sidewall of the corresponding second pad opening 502h.

[0125] As shown in FIGS. 1A and 1B, the method of forming a touch display apparatus according to an embodiment of the disclosure can include forming a cover element 600 on the touch passivation layer 500 of the display area AA. Figure 4A Figure 4C As shown in FIGS. 1A and 1B, the method of forming a touch display apparatus according to an embodiment of the disclosure can include forming a cover element 600 on the touch passivation layer 500 of the display area AA.

[0126] The cover element 600 can have a stacked structure of a cover adhesive layer 610 and a cover window 620. For example, the step of forming the cover element 600 on the touch passivation layer 500 can include a step of attaching the cover window 620 to the touch passivation layer 500 using the cover adhesive layer 610.

[0127] Accordingly, the touch display apparatus according to an embodiment of the disclosure can include the black matrix 410 on the touch sensor Cm, wherein the touch sensor Cm can include the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321 on the touch insulating layer 350 covering the second bridge electrode 322, and wherein the black matrix 410 can be formed with the same mask pattern as the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321. Accordingly, in the touch display apparatus according to an embodiment of the disclosure, the process of forming the touch sensor Cm and the black matrix 410 outside the light emitting areas BEA, GEA, and REA can be simplified. Accordingly, in the touch display apparatus according to an embodiment of the disclosure, the process efficiency can be improved.

[0128] ​Also, in the touch display device according to the embodiment of the present disclosure, a portion of each display pad 104 can be exposed through one of the first pad holes 411h penetrating the black matrix 410 and one of the first pad openings 501h penetrating the touch passivation layer 500 disposed on the black matrix 410, and a portion of each touch pad 304 can be exposed through one of the second pad holes 412h penetrating the black matrix 410 and one of the second pad openings 502h penetrating the touch passivation layer 500, wherein the first pad holes 411h and the second pad holes 412h can be formed with the same mask pattern as the first pad openings 501h and the second pad openings 502h. Accordingly, in the touch display device according to the embodiment of the present disclosure, peeling of the touch passivation layer 500 from the edges of each display pad 104 and each touch pad 304 can be prevented without deteriorating the processing efficiency.

[0129] In the touch display device according to another embodiment of the present disclosure, the bank insulating layer 114 can include a black dye. Accordingly, in the touch display device according to another embodiment of the present disclosure, the direction of light emitted from the light emitting device 130 of each pixel area PA can be constrained by the bank insulating layer 114. Accordingly, in the touch display device according to another embodiment of the present disclosure, light leakage in which light emitted from the light emitting device 130 of each pixel area PA is unintentionally mixed with light emitted from the light emitting device 130 of an adjacent pixel area PA displaying a color different from the corresponding pixel area PA can be prevented.

[0130] A touch display device according to an embodiment of the present disclosure in which the pixel driving circuit of each pixel area PA is composed of a switching thin film transistor T1, a driving thin film transistor T2, and a storage capacitor Cst is described. However, in the touch display device according to another embodiment of the present disclosure, the pixel driving circuit of each pixel area PA can include at least three thin film transistors. For example, in the touch display device according to another embodiment of the present disclosure, the pixel driving circuit of each pixel area PA can further include an initialization thin film transistor to initialize the storage capacitor Cst according to a gate-on signal. The touch display device according to another embodiment of the present disclosure can include a plurality of storage capacitors Cst.

[0131] In a touch display device according to an embodiment of the present disclosure, the light-emitting device 130 of each pixel region PA emits white light. However, in a touch display device according to another embodiment of the present disclosure, the light emitted from the light-emitting device 130 of each pixel region PA can display a different color than the light emitted from the light-emitting devices 130 of adjacent pixel regions PA. For example, in a touch display device according to another embodiment of the present disclosure, the light-emitting device 130 on each blue light-emitting region BEA can emit blue light, the light-emitting device 130 on each green light-emitting region GEA can emit green light, and the light-emitting device 130 on each red light-emitting region REA can emit red light. The light-emitting stack 132 of each pixel region PA can be spaced apart from the light-emitting stack 132 of adjacent pixel regions PA. The light-emitting stack 132 of each pixel region PA can include multiple light-emitting material layers. For example, the light-emitting stack 132 of each pixel region PA can have a stack structure of a first light-emitting material layer and a second light-emitting material layer that produces light with the same display color as the light produced by the first light-emitting material layer. Therefore, in the touch display device according to the embodiments of the present disclosure, the brightness and sharpness of the color realized by each pixel area PA can be improved.

[0132] In the touch display device according to an embodiment of the present disclosure, the side surfaces of each first touch electrode 311, each first bridging electrode 312, each second touch electrode 321, each upper wiring 332, each first upper pad electrode 104b, each second upper pad electrode 304b, and the black background 410 have an inclined shape. However, in another embodiment of the touch display device according to the present disclosure, the side surfaces of each first touch electrode 311, each first bridging electrode 312, each second touch electrode 321, each upper wiring 332, each first upper pad electrode 104b, each second upper pad electrode 304b, and the black background 410 can be formed as upper surfaces perpendicular to the packaging unit 140 and opposite to the device substrate 110, such as... Figures 12A to 12C As shown in the diagram. For example, the side of the black background 410 can be vertically aligned with the side of each first touch electrode 311, each first bridging electrode 312, each second touch electrode 321, each upper wiring 332, each first upper pad electrode 104b, and each second upper pad electrode 304b. Therefore, in a touch display device according to another embodiment of this disclosure, the size of each light-emitting area BEA, GEA, and REA can be maximized, and the accuracy of the touch position of the user and / or tool sensed by the touch sensor Cm can be improved.

[0133] In the touch display device according to another embodiment of the present disclosure, a portion of the black matrix 410 can be removed by a process of patterning the touch conductive layer 300a. For example, in the touch display device according to another embodiment of the present disclosure, the planar shape of the black matrix 410 in the display area AA can be the same as that of the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321, in which the width of the black matrix 410 can be smaller than the width of each of the first touch electrodes 311 and the width of each of the second touch electrodes 321, as shown in FIGS. 3A and 3B. Figure 13 and Figures 14A to 14C .

[0134] In the touch display device according to an embodiment of the present disclosure, the black matrix 410 is disposed only on the upper surfaces of each of the first touch electrodes 311, each of the first bridge electrodes 312, each of the second touch electrodes 321, each of the upper wirings 332, each of the first upper pad electrodes 104b, and each of the second upper pad electrodes 304b opposite to the device substrate 110. However, in the touch display device according to another embodiment of the present disclosure, the black matrix 410 can extend onto the side surfaces of each of the first touch electrodes 311, each of the first bridge electrodes 312, each of the second touch electrodes 321, each of the upper wirings 332, each of the first upper pad electrodes 104b, and each of the second upper pad electrodes 304b, as shown in FIGS. 3A and 3B. Figure 15 and Figures 16A to 16CThe method of forming a touch display device according to another embodiment of the present disclosure can include the step of reflowing the black matrix 410 before forming the color filters 420b, 420g, and 420r. That is, in the touch display device according to another embodiment of the present disclosure, the planar shape of the black matrix 410 in the display area AA can be the same as that of the first touch electrode 311, the first bridge electrode 312, and the second touch electrode 321, in which the width of the black matrix 410 can be greater than that of each of the first touch electrode 311 and the second touch electrode 321. For example, in the touch display device according to another embodiment of the present disclosure, the color filters 420b, 420g, and 420r can cover a portion of the black matrix 410 flowing down to the side surface of each of the first touch electrode 311, the first bridge electrode 312, the second touch electrode 321, the upper wiring 332, the first upper pad electrode 104b, and the second upper pad electrode 304b. The gap 410g of the black matrix 410 overlapping the spacing area between the first touch electrode 311 and the second touch electrode 321 can have a smaller size than the spacing area between the first touch electrode 311 and the second touch electrode 321. Accordingly, in the touch display device according to another embodiment of the present disclosure, light leakage due to the spacing area between the first touch electrode 311 and the second touch electrode 321 can be reduced.

[0135] In the touch display device according to another embodiment of the present disclosure, each of the color filters 420b, 420g, and 420r can be formed to be wider than the corresponding light emitting areas BEA, GEA, and REA. For example, in the touch display device according to another embodiment of the present disclosure, the color filters 420b, 420g, and 420r implementing different colors can be stacked in the gap 410g of the black matrix 410 overlapping the spacing area between the first touch electrode 311 and the second touch electrode 321, as illustrated in FIG. 4B. Figures 17A to 17C In the touch display device according to another embodiment of the present disclosure, the color filters 420b, 420g, and 420r implementing different colors can be stacked in the gap 410g of the black matrix 410 overlapping the spacing area between the first touch electrode 311 and the second touch electrode 321. Accordingly, in the touch display device according to another embodiment of the present disclosure, reflection of external light can be prevented by the color filters 420b, 420g, and 420r stacked on the black matrix 410.

[0136] In a touch display device according to another embodiment of the present disclosure, a portion of the device substrate 110 can be bent. For example, in a touch display device according to another embodiment of the present disclosure, the bezel zone BZ of the device substrate 110 can include a dam zone DA, a bending zone BA, and a pad zone PD, as shown in FIG. 18. The dam zone DA can be disposed adjacent to the display zone AA. For example, the dam 106 defining the formation position of the encapsulation unit 140 can be disposed on the dam zone DA of the device substrate 110. The bending zone BA can be disposed between the dam zone DA and the pad zone PD. The bending zone BA can be a region that is bent by a subsequent process. For example, by a subsequent process, the pad zone PD of the device substrate 110 can be disposed to overlap the display zone AA of the device substrate 110. Figures 18A to 18C

[0137] In a touch display device according to another embodiment of the present disclosure, the touch passivation layer 500 can not extend onto the bending zone BA and the pad zone PD. For example, a spacer 700 that blocks the flow of the touch passivation layer 500 can be formed on the black matrix 410 on the dam zone DA. The spacer 700 can be formed using a process of forming the color filters 420b, 420g, and 420r. For example, the spacer 700 can have a stacked structure of a first pattern 710 including the same material as the green color filter 420g, a second pattern 720 including the same material as the red color filter 420r, and a third pattern 730 including the same material as the blue color filter 420b. Accordingly, in a touch display device according to another embodiment of the present disclosure, the bending stress due to the bending of the bending zone BA can be reduced without deteriorating the process efficiency.

[0138] In a touch display device according to another embodiment of the present disclosure, the black matrix 410 can be disposed on the display pad 104 and the touch pad 304. For example, in a touch display device according to another embodiment of the present disclosure, the external terminal can be connected to the display pad 104 or the touch pad 304 covered by the black matrix 410 by an indentation process. Accordingly, in a touch display device according to another embodiment of the present disclosure, damage in the surface of the display pad 104 and the surface of the touch pad 304 due to foreign matter and / or external impact before the connection of the external terminal can be prevented.

[0139] In a touch display device according to an embodiment of the present disclosure, the color filters 420b, 420g, and 420r are disposed on the touch insulating layer 350. However, in a touch display device according to another embodiment of the present disclosure, the color filters 420b, 420g, and 420r can be formed at various positions. For example, in a touch display device according to another embodiment of the present disclosure, the touch insulating layer 350 can be formed after the color filters 420b, 420g, and 420r are formed on the touch buffer layer 200, as shown in FIG. 19. Figures 19A to 19C ​That is, in the touch display device according to another embodiment of the disclosure, the color filters 420b, 420g, and 420r can be disposed between the touch buffer layer 200 and the touch insulating layer 350. Accordingly, in the touch display device according to another embodiment of the disclosure, the degree of freedom of the forming process of the color filters 420b, 420g, and 420r can be increased.

[0140] In the touch display device according to the embodiment of the disclosure, each of the display pads 104 and the touch pads 304 has a two-layer structure. However, in the touch display device according to the embodiment of the disclosure, the display pads 104 and the touch pads 304 can be formed in various structures. For example, in the touch display device according to another embodiment of the disclosure, each display pad 104 can include a first intermediate pad electrode 104c disposed between the first lower pad electrode 104a and the first upper pad electrode 104b, and each touch pad 304 can include a second intermediate pad electrode 304c disposed between the second lower pad electrode 304a and the second upper pad electrode 304b, as shown in FIG. 4B. Figures 20A to 20C The first intermediate pad electrode 104c and the second intermediate pad electrode 304c can include the same material as the second bridge electrode 322. For example, the first intermediate pad electrode 104c and the second intermediate pad electrode 304c can be formed at the same time as the second bridge electrode 322. The edge of each first intermediate pad electrode 104c and the edge of each second intermediate pad electrode 304c can be covered by the touch insulating layer 350. Accordingly, in the touch display device according to another embodiment of the disclosure, each first upper pad electrode 104b can be stably connected to a corresponding first lower pad electrode 104a, and each second upper pad electrode 304b can be stably connected to a corresponding second lower pad electrode 304a. Accordingly, in the touch display device according to another embodiment of the disclosure, signal loss and delay due to the display pads 104 and the touch pads 304 can be prevented or at least reduced.

[0141] A touch display device according to an embodiment of the disclosure can include a touch sensor on a package unit covering a light emitting device and a black matrix on the touch sensor, wherein the touch sensor can include a first touch electrode, a second touch electrode, a first bridge electrode, and a second bridge electrode, and wherein the black matrix can be formed using the same mask pattern as the first touch electrode, the second touch electrode, and the first bridge electrode disposed on the same layer, such that a planar shape of the black matrix can be the same as a planar shape of the first touch electrode, the second touch electrode, and the first bridge electrode. Accordingly, in the touch display device according to the embodiment of the disclosure, a process using a mask pattern can be reduced. Thereby, in the touch display device according to the embodiment of the disclosure, a reduction in process efficiency can be minimized, and image degradation due to reflection of external light can be prevented.

[0142] CROSS-REFERENCE TO RELATED APPLICATIONS

[0143] This application claims the benefit of Korean Patent Application No. 10-2020-0190025, filed December 31, 2020, and Korean Patent Application No. 10-2021-0161248, filed November 22, 2021, which are hereby incorporated by reference as if fully set forth herein.

Claims

1. A touch display device, comprising: a light emitting device disposed in a display area of a substrate; a packaging unit disposed on the light emitting device; a touch buffer layer disposed on the packaging unit; a second bridge electrode disposed on the touch buffer layer; a touch insulating layer disposed on the touch buffer layer, the touch insulating layer covering the second bridge electrode; a first sensor layer disposed on the touch insulating layer, the first sensor layer including a first touch electrode and a first bridge electrode electrically connected to the first touch electrode; a second touch electrode disposed on the touch insulating layer, the second touch electrode electrically connected to the second bridge electrode; a black matrix disposed on the first touch electrode, the second touch electrode, and the first bridge electrode; and a color filter disposed on the touch insulating layer and in a color deposition area defined by the black matrix, the first sensor layer, and the second touch electrode, wherein the color filter is disposed on the same layer as the first sensor layer and the second touch electrode. 2.The touch display device of claim 1, further comprising a reflowed black matrix disposed in the color deposition area to cover side surfaces of the second touch electrode and the first sensor layer, an end of the reflowed black matrix overlapping an end of the color filter. wherein 3.The touch display device of claim 1, wherein the black matrix is directly disposed on the first touch electrode, the first bridge electrode, and the second touch electrode. the color filter has a bottom surface in contact with a top surface of the touch insulating layer, and 4. The touch display device of claim 1, wherein, wherein side surfaces of the first sensor layer, side surfaces of the second touch electrode, and side surfaces of the black matrix are in contact with side surfaces of the color filter. the color filter has a bottom surface in contact with a top surface of the touch insulating layer and side surfaces in contact with side surfaces of the reflowed black matrix.

5. The touch display device of claim 2, wherein, the reflowed black matrix covering the second touch electrode and the first sensor layer covers a portion of the top surface of the touch insulating layer in the color deposition area.

6. The touch display device of claim 2, wherein, a portion of the color filter overlaps a portion of the reflowed black matrix to form a stepped overlapping area with respect to a top surface of each of the black matrix and the color filter.

7. The touch display device of claim 2, wherein, 8.The touch display device of claim 1, further comprising a bezel area disposed outside the display area, wherein the bezel area includes: a first bezel area connected to the display area, an end of the packaging unit being disposed in the first bezel area; a pad area in which a touch pad is disposed; and a second bezel area connected to and disposed between each of the first bezel area and the pad area, and the touch pad is connected to a wiring extending from the first sensor layer or the second touch electrode of the display area. ​ 9.The touch display device of claim 8, wherein, the touch pad includes: a first touch pad electrode disposed on an interlayer insulating layer; a second touch pad electrode disposed on the first touch pad electrode and disposed on the same plane as the second bridge electrode; and a third touch pad electrode disposed on the second touch pad electrode and integrated with the wiring, the second touch pad electrode is disposed in a first touch pad contact hole exposing the first touch pad electrode by removing a portion of the touch buffer layer, and the third touch pad electrode is disposed in a second touch pad contact hole exposing the second touch pad electrode by removing a portion of the touch insulating layer. 10.The touch display device of claim 9, wherein, the first touch pad electrode includes the same metal as a source or a drain of the light emitting device, the second touch pad electrode includes the same material as the second bridge electrode, and the third touch pad electrode includes the same material as the first sensor layer. 11.The touch display device of claim 8, wherein, the black matrix is disposed on the wiring in the bezel area, and the black matrix is reflowed to form a second reflow area at one end of a pad electrode in the pad area.

12. The touch display device of claim 11, wherein, In the second reflow area, the black matrix covers a side of the touch pad and covers a portion of a top surface of the touch insulating layer. 13.The touch display device of claim 8, further comprising: a first dam disposed on an interlayer insulating layer and disposed in the first bezel area; and a second dam disposed on the black matrix of the first bezel area and disposed in a boundary area between the second bezel area and the first bezel area, wherein the second dam includes a stack of a plurality of color filters, and at least a portion of the second dam overlaps with or is disposed in the first bezel area adjacent to the first dam. 14.The touch display device of claim 13, further comprising a passivation layer over the black matrix, the second dam prevents the passivation layer from flowing. wherein 15.The touch display device of claim 14, further comprising a cover layer including: a black optical adhesive layer disposed on the passivation layer; and a window cover disposed on the black optical adhesive layer. 16.A touch display device comprising: a light emitting device disposed in a display area of a substrate; an encapsulation layer disposed on the light emitting device; a touch buffer layer disposed on the encapsulation layer; a second bridge electrode disposed on the touch buffer layer; a touch insulating layer disposed on the touch buffer layer, the touch insulating layer covering the second bridge electrode; ​ ​ a first sensor layer disposed on the touch insulating layer, the first sensor layer including a first touch electrode and a first bridge electrode electrically connected to the first touch electrode; a second touch electrode on the touch insulating layer, the second touch electrode electrically connected to the second bridge electrode; a black matrix disposed on the first touch electrode, the second touch electrode, and the first bridge electrode; and a color filter disposed on the touch insulating layer and disposed between the black matrix, the first sensor layer, and the second touch electrode, wherein both the first sensor layer and the second touch electrode overlap the color filter in a first direction of the lateral direction. a side surface of the black matrix is flush with both a side surface of the second touch electrode and a side surface of the first sensor layer in a second direction intersecting the first direction.

17. The touch display device of claim 16, wherein, the black matrix is reflowed to cover the side surfaces of the second touch electrode and the first sensor layer and a top surface of a portion of the touch insulating layer.

18. The touch display device of claim 16, wherein, 19. The touch display apparatus of claim 16, wherein the black matrix is in contact with an upper surface of the first touch electrode, an upper surface of the first bridge electrode, and an upper surface of the second touch electrode, and each of the upper surface of the first touch electrode, the upper surface of the first bridge electrode, and the upper surface of the second touch electrode is a surface opposite the substrate. the color filter has a bottom surface in contact with a top surface of the touch insulating layer, and 20. The touch display device of claim 16, wherein, a side surface of the second touch electrode and a side surface of the black matrix are in contact with a side surface of the color filter. the color filter has a bottom surface in contact with a top surface of the touch insulating layer and a side surface in contact with a side surface of the reflowed black matrix.

21. The touch display device of claim 18, wherein, a portion of the color filter overlaps a portion of the reflowed black matrix to form a stepped overlapping area with respect to a top surface of each of the black matrix and the color filter.

22. The touch display device of claim 18, wherein, 23. The touch display apparatus of claim 16, further comprising: a first bezel area connected to the display area, an end portion of the encapsulation layer disposed in the first bezel area; a pad area including a touch pad connected to a wiring extending from the first sensor layer or the second touch electrode of the display area; and a second bezel area disposed between the first bezel area and the pad area. the touch pad includes: a first touch pad electrode disposed on an interlayer insulating layer; 24. The touch display device of claim 23, wherein, a second touch pad electrode disposed on the first touch pad electrode and disposed on the same plane as the second bridge electrode; and a third touch pad electrode disposed on the second touch pad electrode and integrated with the wiring, the second touch pad electrode is disposed in a first touch pad contact hole exposing the first touch pad electrode by removing a portion of the touch buffer layer, and the third touch pad electrode is disposed in a second touch pad contact hole exposing the second touch electrode by removing a portion of the touch buffer layer. ​ The third touch pad electrode is disposed in a second touch pad contact hole exposing the second touch pad electrode by removing a portion of the touch insulating layer.

25. The touch display apparatus of claim 24, wherein, The first touch pad electrode comprises the same metal as a source or drain of the light emitting device, The second touch pad electrode comprises the same material as the second bridge electrode, and The third touch pad electrode comprises the same material as the first sensor layer.

26. The touch display apparatus of claim 23, wherein, The black matrix is disposed on the wiring in the first bezel area, the second bezel area, and the pad area, and The black matrix is reflowed to form a second reflow area at one end of the pad electrode in the pad area, the black matrix covering a portion of a top surface of the touch insulating layer and a side of the touch pad.

27. The touch display apparatus of claim 23, further comprising: a passivation layer over the black matrix; a first dam disposed on an interlayer insulating layer and in the first bezel area; and a second dam disposed on the black matrix in a border area between the second bezel area and the first bezel area, the second dam comprising a stack of a plurality of color filters and preventing the passivation layer from flowing.

28. A touch display apparatus, comprising: a light emitting device disposed in a display area of a substrate; an encapsulation layer disposed on the light emitting device; a touch buffer layer disposed on the encapsulation layer; a touch insulating layer disposed on the touch buffer layer; a first sensor layer disposed on the touch insulating layer, the first sensor layer comprising a first touch electrode and a first bridge electrode electrically connected to the first touch electrode; a second touch electrode on the touch insulating layer, the second touch electrode spaced apart from the first touch electrode and the first bridge electrode of the first sensor layer, a second bridge electrode electrically connected to the second touch electrode, the second bridge electrode disposed between the touch buffer layer and the touch insulating layer; touch wiring electrically connecting the first touch electrode and the second touch electrode to an upper pad electrode disposed outside the encapsulation layer; a color filter on the touch insulating layer, the color filter overlapping the light emitting device; a black matrix surrounding the color filter, the black matrix overlapping the first sensor layer and the second touch electrode, wherein the first sensor layer and the second touch electrode overlap the color filter in a first direction of a lateral direction, wherein a side surface of the black matrix is flush with both a side surface of the second touch electrode and a side surface of the first sensor layer in a second direction intersecting the first direction, and wherein the black matrix comprises a pad hole overlapping the upper pad electrode.

29. A touch display apparatus, comprising: ​ A light emitting device on a display area of a device substrate; a packaging unit on the device substrate, the packaging unit covering the light emitting device; an upper pad electrode on a bezel area of the device substrate, the bezel area being disposed outside the display area; a touch insulating layer on the packaging unit; a first touch line on the touch insulating layer, the first touch line including first touch electrodes and first bridge electrodes connected between the first touch electrodes in a first direction; a second touch line including second bridge electrodes between the packaging unit and the touch insulating layer and second touch electrodes connected through the second bridge electrodes in a second direction perpendicular to the first direction; a touch wiring electrically connecting the first touch line and the second touch line to the upper pad electrode; a black matrix on the first touch electrodes, the first bridge electrodes, and the second touch electrodes, wherein each of the first touch line, the second touch line, and the black matrix has a mesh shape including openings overlapping the light emitting device, wherein a planar shape of the black matrix is the same as planar shapes of the first touch electrodes, the first bridge electrodes, and the second touch electrodes disposed on the same layer, and wherein the black matrix includes a pad hole overlapping the upper pad electrode.

30. The touch display device of claim 29, wherein, The black matrix is in contact with an upper surface of each of the first touch electrodes, an upper surface of each of the first bridge electrodes, and an upper surface of each of the second touch electrodes opposite the device substrate.

31. The touch display device of claim 29, wherein, The black matrix extends onto a side surface of each of the first touch electrodes, a side surface of each of the first bridge electrodes, and a side surface of each of the second touch electrodes. 32.The touch display apparatus of claim 29, further comprising a color filter disposed between the packaging unit and the touch insulating layer, the color filter overlapping the light emitting device.

33. The touch display device of claim 29, wherein, The touch wiring extends along a surface of the packaging unit, and the black matrix overlaps the touch wiring. 34.The touch display apparatus of claim 33, wherein a planar shape of the black matrix between the display area and the upper pad electrode is the same as a planar shape of the touch wiring. 35.The touch display apparatus of claim 33, further comprising lower pad electrodes between the device substrate and the upper pad electrodes, each of the lower pad electrodes being electrically connected to one of the upper pad electrodes, wherein the upper pad electrodes including a same material as the first touch electrodes, the first bridge electrodes, and the second touch electrodes, and wherein an edge of an upper surface of each upper pad electrode opposite the device substrate is covered by the black matrix.

36. The touch display device of claim 35, wherein, The black matrix extends onto a side surface of the upper pad electrode. 37.The touch display apparatus of claim 35, further comprising: a touch passivation layer on the black matrix; and a passivation layer on the black matrix. a touch buffer layer between the encapsulation unit and the touch insulating layer, wherein the touch passivation layer includes pad openings overlapping the pad holes of the black matrix, wherein the touch buffer layer includes through holes to connect each upper pad electrode to a corresponding lower pad electrode, and wherein the pad holes of the black matrix overlap the through holes of the touch buffer layer.

38. The touch display device of claim 37, wherein, A sidewall of each of the pad holes is continuous with a sidewall of a corresponding pad opening.

39. A touch display device, the touch display device comprising: a bank insulating layer on a device substrate, the bank insulating layer defining a light emitting region; a light emitting device on the light emitting region of the device substrate; an encapsulation unit on the bank insulating layer and the light emitting device; a touch sensor on the encapsulation unit, the touch sensor including first touch electrodes connected in a first direction and second touch electrodes connected in a second direction intersecting the first direction; touch pads spaced apart from the encapsulation unit, each of the touch pads including a lower pad electrode and an upper pad electrode electrically connected to the lower pad electrode; touch wiring electrically connecting the first touch electrodes and the second touch electrodes to the touch pads; a black matrix on the first touch electrodes, the second touch electrodes, and the touch wiring; and a touch passivation layer on the black matrix, the touch passivation layer including pad openings overlapping the upper pad electrodes of each touch pad, wherein the first touch electrodes, the second touch electrodes, and the black matrix are disposed between the light emitting region, and wherein the black matrix includes pad holes overlapping the pad openings of the touch passivation layer.

40. The touch display device of claim 39, further comprising a color filter on the touch sensor, the color filter overlapping the light emitting region, the light emitting region including a first light emitting region and a second light emitting region implementing a different color from the first light emitting region, wherein wherein the color filter includes a first color filter on the first light emitting region and a second color filter on the second light emitting region, and wherein the first color filter and the second color filter are laminated in a gap of the black matrix. A planar shape of each of the first touch electrodes, the second touch electrodes, and the black matrix is a mesh shape, and 41. The touch display device of claim 39, wherein, wherein a width of the black matrix is less than a width of each of the first touch electrodes and a width of each of the second touch electrodes. A side surface of the black matrix is disposed on an upper surface of each of the first touch electrodes and an upper surface of each of the second touch electrodes opposite the device substrate.

42. The touch display device of claim 41, wherein, The black matrix includes a gap overlapping a spacing region between the first touch electrodes and the second touch electrodes, the gap of the black matrix overlapping the bank insulating layer.

43. The touch display device of claim 39, wherein, ​

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