Touch display device

Abstract

The present application relates to a touch display device. A touch display device for sensing a touch of a user and / or a tool is provided. The touch display device may include: a light emitting device including an upper electrode extending in a first direction, a packaging component on the upper electrode, a touch line on the packaging component, and a link line arranged between a device substrate and the light emitting device, wherein the link line is connected to the upper electrode of the light emitting device, and wherein the touch line includes a portion overlapping the upper electrode of the light emitting device. Therefore, in the touch display device, the process of forming a component for sensing touch can be simplified.

Description

Technical Field

[0001] The present disclosure relates to a touch display device, and more particularly, to a touch display device that senses touch of a user and / or a tool. Background Art

[0002] Typically, electronic devices such as monitors, TVs, laptop computers, and digital cameras include display devices that can display images. For example, the display device may include a light emitting device. Each light emitting device may emit light that displays a specific color. For example, each light emitting device may include a light emitting layer disposed between two light emitting electrodes.

[0003] The display device may be a touch display device that senses the touch of a user and / or a tool and applies a specific signal. For example, the touch display device may include a touch structure that is independently controlled by a light-emitting device. The touch structure may be disposed on the light-emitting device. For example, the touch structure may include touch electrodes disposed side by side on a package element covering the light-emitting device. The touch electrodes may be connected in a first direction or in a second direction perpendicular to the first direction. Therefore, in the touch display device, the process of forming the touch structure may be complicated. Summary of the invention

[0004] Accordingly, the present disclosure is directed to a touch display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0005] An object of the present disclosure is to provide a touch display device which simplifies a process of forming components for sensing a touch of a user and / or a tool.

[0006] Other advantages, purposes and features of the present disclosure will be described in part in the following description, and in part will become apparent to those skilled in the art after reviewing the following, or may be learned from the practice of the present disclosure. The purposes and other advantages of the present disclosure may be realized and obtained through the structures specifically pointed out in the written description and claims and the drawings.

[0007] To achieve these objectives and other advantages, and in accordance with the purposes of the present disclosure, as embodied and broadly described herein, a touch display device including a device substrate is provided. The device substrate includes a light-emitting area. A pixel electrode and a dyke insulating layer are disposed on the device substrate. Each of the pixel electrodes is disposed on one of the light-emitting areas. The dyke insulating layer covers the edge of each pixel electrode. Each of the light-emitting layers is disposed on a portion of one of the pixel electrodes exposed by the dyke insulating layer. A first upper electrode is disposed on the dyke insulating layer and the light-emitting layer. The first upper electrode extends in a first direction. A first link line is disposed between the device substrate and the dyke insulating layer. The first link line is connected to the first upper electrode. A packaging element is disposed on the first upper electrode. A touch line is disposed on the packaging element. The touch line includes a portion overlapping the first upper electrode.

[0008] The first upper electrode may be selectively connected to the touch sensing element through a first link line.

[0009] The first upper electrode may be connected to the first link line together with another first upper electrode disposed adjacent to the first upper electrode in a second direction perpendicular to the first direction.

[0010] The encapsulation element may be a multi-layer structure having an inorganic insulating layer and an organic insulating layer.

[0011] The first upper electrode may have a transmittance higher than that of the pixel electrode.

[0012] The touch line may extend in a second direction perpendicular to the first direction.

[0013] The second link line may be disposed between the device substrate and the bank insulating layer. The second upper electrode connected to the second link line may extend side by side with the first upper electrode. The second link line may be spaced apart from the first link line.

[0014] The second upper electrode may be connected to the second link line together with another second upper electrode disposed adjacent to the second upper electrode in a second direction perpendicular to the first direction.

[0015] The signal applied to the second upper electrode may be different from the signal applied to the first upper electrode.

[0016] The second upper electrode may include the same material as that of the first upper electrode.

[0017] The second link line may include the same material as that of the first link line.

[0018] The first upper electrode may be insulated from the second link line. The second upper electrode may be insulated from the first link line.

[0019] The light emitting regions may be arranged in a zig-zag shape. The first upper electrode and the second upper electrode may extend in a zig-zag shape.

[0020] The second upper electrode may extend between the light emitting regions.

[0021] Touch wires may extend between the light emitting areas.

[0022] The spacer may be disposed on the bank insulating layer. The spacer may have an inversely tapered side. The spacer may extend along an edge of the first upper electrode.

[0023] To achieve these objectives and other advantages, and in accordance with the purposes of the present disclosure, as implemented and broadly described herein, a touch display device is provided, which may include: a device substrate, the device substrate having: a light-emitting area; and a non-light-emitting area, the non-light-emitting area being arranged outside the light-emitting area; a light-emitting layer, each of the light-emitting layers overlapping with the corresponding light-emitting area of ​​the device substrate; an upper electrode, the upper electrode including: a first upper electrode, the first upper electrode extending in a first direction, the first upper electrode overlapping with the light-emitting layer; and a second upper electrode, the second upper electrode extending in the first direction and deviating from the first upper electrode in a second direction perpendicular to the first direction; a packaging element, the packaging element being located on the upper electrode; and a touch line, the touch line being located on the packaging element, the touch line extending in the second direction.

[0024] The package element may extend beyond the package dam, and wherein the touch line may extend beyond the package dam.

[0025] The touch display device may further include: a touch pad, the touch pad including an upper touch pad and a lower touch pad; and a touch buffer layer, the touch buffer layer is located between the touch line and the package element, the touch buffer layer extends beyond the package dam and extends above the touch pad, the touch buffer layer exposes the lower touch pad, and the upper touch pad is connected to the lower touch pad through the touch buffer layer.

[0026] The touch display device may also include: a first link line, the first link line extending parallel to the touch line; and a first link pad, the first link pad electrically connected to the first link line, the first link pad including a first upper link pad and a first lower link pad; wherein the first link line is located between the device substrate and the light-emitting layer, wherein the first upper link pad includes the same material as the touch line.

[0027] The touch display device may further include: a covering insulating layer, wherein the covering insulating layer is located above the touch line.

[0028] The touch display device may further include: a spacer that separates the first upper electrode from the second upper electrode laterally, wherein the touch line overlaps the spacer.

[0029] The touch display device may further include: a first link line electrically connected to the first upper electrode; and a second link line electrically connected to the second upper electrode, wherein the first link line and the second link line are located on opposite sides of the partition.

[0030] The first link line and the second link line may extend in the second direction and be disposed over a non-light emitting region of the device substrate.

[0031] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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:

[0033] Figure 1 is a diagram schematically showing a touch display device according to one or more embodiments of the present disclosure;

[0034] Figure 2 yes Figure 1 A magnified view of the K region in FIG.

[0035] Figure 3 It is along Figure 2 The I-I' intercepted figure;

[0036] Figure 4 It is along Figure 2 The II-II' intercepted figure;

[0037] Figure 5 It is along Figure 2 A diagram taken from III-III' of FIG.

[0038] Figure 6 and Figure 7 is a diagram illustrating a touch display device according to another embodiment of the present disclosure.

[0039] Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals will be understood to refer to the same elements, features, and structures. DETAILED DESCRIPTION

[0040] Hereinafter, details related to the above-mentioned purposes, 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. Here, the embodiments of the present disclosure are provided in order to enable the technical spirit of the present disclosure to be satisfactorily conveyed to those skilled in the art, and therefore, the present disclosure may be implemented in other forms without being limited to the embodiments described below.

[0041] In addition, throughout the specification, the same or very similar elements may be represented by the same reference numerals, and in the drawings, the lengths and thicknesses of layers and regions may be exaggerated for convenience. It should be understood that when a first element is referred to as being "on" a second element, although the first element may be disposed on the second element in a manner of contacting the second element, a third element may also be interposed between the first element and the second element.

[0042] Here, terms such as "first" and "second" may be used to distinguish any one element from another element. However, without departing from the technical spirit of the present disclosure, the first element and the second element may be arbitrarily named according to the convenience of those skilled in the art.

[0043] The terms used in the specification of the present disclosure are only used to describe specific embodiments and are not intended to limit the scope of the present disclosure. For example, unless the context clearly indicates otherwise, the elements described in the singular form are intended to include multiple elements. In addition, in the specification of the present disclosure, it will also be understood that the terms "comprising" and "including" specify the existence of the features, integers, steps, operations, elements, components and / or their combinations, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations.

[0044] 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 also be understood that, unless expressly defined as such herein, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense.

[0045] (Implementation Method)

[0046] Figure 1 is a diagram schematically illustrating a touch display device according to one or more embodiments of the present disclosure. Figure 2 yes Figure 1 Magnified view of the K region in . Figure 3 It is along Figure 2 Figure 1 is a diagram taken from the I-I' section. Figure 4 It is along Figure 2 FIG. 1 is a diagram taken from section II-II'. Figure 5 It is along Figure 2 FIG. 1 is a diagram taken from section III-III'.

[0047] Reference Figures 1 to 5 , a touch display device according to an embodiment of the present disclosure may include a display panel DP and driving components DD, SD, TD, and TC. The driving components DD, SD, TD, and TC may provide various signals for realizing an image to the display panel DP. For example, the driving components DD, SD, TD, and TC may include a data driver DD for applying a data signal, a scan driver SD for applying a scan signal, and a timing controller TC. The timing controller TC may apply digital video data and a source timing control signal to the data driver DD, and apply a clock signal, a reverse clock signal, and a start signal to the scan driver SD.

[0048] The display panel DP may generate an image provided to a user. For example, the display panel DP may include a light emitting device 300 on a device substrate 100. The device substrate 100 may have a multilayer structure. For example, the device substrate 100 may have a stacked structure of a first substrate layer 101, a substrate insulating layer 102, and a second substrate layer 103. The second substrate layer 103 may include the same material or substantially the same material as the material of the first substrate layer 101. For example, the first substrate layer 101 and the second substrate layer 103 may include a polymer material such as polyimide (PI). The substrate insulating layer 102 may include an insulating material. Therefore, in a touch display device according to an embodiment of the present disclosure, the device substrate 100 may have high flexibility. Therefore, in a touch display device according to an embodiment of the present disclosure, damage to the light emitting device 300 due to external impact may be prevented.

[0049] The device substrate 100 may include a light emitting area EA and a non-light emitting area NEA. The non-light emitting area NEA may be disposed outside the light emitting area EA. For example, each of the light emitting areas EA may be surrounded by the non-light emitting area NEA.

[0050] The light emitting devices 300 may be disposed on the light emitting area EA of the device substrate 100. Each of the light emitting devices 300 may emit light showing a specific color. For example, each of the light emitting devices 300 may include a pixel electrode 310, a light emitting layer 320, and a first upper electrode 330a sequentially stacked on one of the light emitting areas EA of the device substrate 100.

[0051] The pixel electrode 310 may include a conductive material. The pixel electrode 310 may have a high reflectivity. For example, the pixel electrode 310 may include a metal such as aluminum (Al) and silver (Ag). The pixel electrode 310 may have a multilayer structure. For example, the pixel electrode 310 may have a structure in which a reflective electrode including a metal is disposed between transparent electrodes including a transparent conductive material such as ITO and IZO.

[0052] The light emitting layer 320 may generate light having a brightness corresponding to the voltage difference between the pixel electrode 310 and the first upper electrode 330a. For example, the light emitting layer 320 may include a light emitting material layer (EML) containing a light emitting material. The light emitting material may include an organic material, an inorganic material, or a mixed material. For example, the touch display device according to the embodiment of the present disclosure may be an organic light emitting display device including a light emitting material layer containing an organic material. The light emitting layer 320 may have a multilayer structure. For example, the light emitting layer 320 may 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). Therefore, in the touch display device according to the embodiment of the present disclosure, the light emitting efficiency of each light emitting device 300 may be improved.

[0053] The first upper electrode 330a may include a conductive material. The first upper electrode 330a may include a material different from the pixel electrode 310. The first upper electrode 330a may have a transmittance higher than that of the pixel electrode 310. For example, the first upper electrode 330a may be a transparent electrode including a transparent conductive material such as ITO and IZO. Therefore, in the touch display device according to the embodiment of the present disclosure, the light generated from the light emitting layer 320 may be emitted to the outside through the first upper electrode 330a.

[0054] The driving circuits may be provided between the device substrate 100 and the light emitting device 300. Each of the driving circuits may be electrically connected to one of the light emitting devices 300. Each of the driving circuits may be controlled by a signal sent from the driving components DD, SD, TD, and TC. For example, each driving circuit may provide a driving current corresponding to a data signal to the corresponding light emitting device 300 according to a scan signal. Each driving circuit may include at least one thin film transistor 200. For example, the thin film transistor 200 may include a semiconductor pattern 210, a gate insulating layer 220, a gate electrode 230, an interlayer insulating layer 240, a source electrode 250, and a drain electrode 260.

[0055] The semiconductor pattern 210 may include a semiconductor material. For example, the semiconductor pattern 210 may include amorphous silicon (a-Si) or polycrystalline silicon (poly-Si). The semiconductor pattern 210 may be an oxide semiconductor. For example, the semiconductor pattern 210 may include a metal oxide such as IGZO. The semiconductor pattern 210 may include a source region, a drain region, and a channel region. The channel region may be disposed between the source region and the drain region. The source region and the drain region may have a lower resistance than the channel region.

[0056] The gate insulating layer 220 may be disposed on the semiconductor pattern 210. The gate insulating layer 220 may extend beyond the semiconductor pattern 210. For example, one side of the semiconductor pattern 210 may be covered by the gate insulating layer 220. The gate insulating layer 220 may include an insulating material. For example, the gate insulating layer 220 may include silicon oxide (SiO) and / or silicon nitride (SiN). The gate insulating layer 220 may include a material having a high dielectric constant. For example, the gate insulating layer 220 may include a high-K material such as hafnium oxide (HfO). The gate insulating layer 220 may have a multilayer structure.

[0057] The gate electrode 230 may be disposed on the gate insulating layer 220. The gate electrode 230 may include a conductive material. For example, the gate electrode 230 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The gate electrode 230 may be insulated from the semiconductor pattern 210 by the gate insulating layer 220. The gate electrode 230 may overlap with a channel region of the semiconductor pattern 210. For example, the channel region of the semiconductor pattern 210 may have a conductivity corresponding to a voltage applied to the gate electrode 230.

[0058] The interlayer insulating layer 240 may be disposed on the gate electrode 230. The interlayer insulating layer 240 may extend beyond the gate electrode 230. For example, one side of the gate electrode 230 may be covered by the interlayer insulating layer 240. The interlayer insulating layer 240 may be in direct contact with the gate insulating layer 220 outside the gate electrode 230. The interlayer insulating layer 240 may include an insulating material. For example, the interlayer insulating layer 240 may include silicon oxide (SiO).

[0059] The source electrode 250 may be disposed on the interlayer insulating layer 240. The source electrode 250 may include a conductive material. For example, the source electrode 250 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The source electrode 250 may be insulated from the gate electrode 230 by the interlayer insulating layer 240. For example, the source electrode 250 may include a material different from that of the gate electrode 230. The source electrode 250 may be electrically connected to the source region of the semiconductor pattern 210. For example, the gate insulating layer 220 and the interlayer insulating layer 240 may include a source contact hole partially exposing the source region of the semiconductor pattern 210. The source electrode 250 may include a portion overlapping the source region of the semiconductor pattern 210. For example, the source electrode 250 may be in direct contact with the source region of the semiconductor pattern 210 in the source contact hole.

[0060] The drain electrode 260 may be disposed on the interlayer insulating layer 240. The drain electrode 260 may include a conductive material. For example, the drain electrode 260 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The drain electrode 260 may be insulated from the gate electrode 230 by the interlayer insulating layer 240. For example, the drain electrode 260 may include a material different from that of the gate electrode 230. The drain electrode 260 may include the same material or substantially the same material as that of the source electrode 250. The drain electrode 260 may be electrically connected to the drain region of the semiconductor pattern 210. The drain electrode 260 may be spaced apart from the source electrode 250. For example, the gate insulating layer 220 and the interlayer insulating layer 240 may include a drain contact hole partially exposing the drain region of the semiconductor pattern 210. The drain electrode 260 may include a portion overlapping the drain region of the semiconductor pattern 210. For example, the drain electrode 260 may be in direct contact with the drain region of the semiconductor pattern 210 in the drain contact hole.

[0061] The first buffer layer 110 may be disposed between the device substrate 100 and the driving circuit. In the process of forming the thin film transistor 200, the first buffer layer 110 may prevent contamination caused by the device substrate 100. For example, the first buffer layer 110 may completely cover the upper surface of the device substrate 100 facing the light emitting device 300. The first buffer layer 110 may include an insulating material. For example, the first buffer layer 110 may include silicon oxide (SiO) and / or silicon nitride (SiN). The first buffer layer 110 may have a multilayer structure.

[0062] The light blocking pattern 115 may be disposed between the first buffer layer 110 and each thin film transistor 200. The light blocking pattern 115 may prevent the characteristic change of each thin film transistor 200 due to external light. For example, the light blocking pattern 115 may include a portion overlapping with the semiconductor pattern 210 of each thin film transistor 200. The light blocking pattern 115 may include a material that blocks or absorbs light. For example, the light blocking pattern 115 may include a metal such as aluminum (Al), silver (Ag), and copper (Cu).

[0063] The light blocking pattern 115 may be insulated from the semiconductor pattern 210 of each thin film transistor 200. For example, the second buffer layer 120 may be disposed between the light blocking pattern 115 and the thin film transistor 200. The second buffer layer 120 may include an insulating material. For example, the second buffer layer 120 may include silicon oxide (SiO) or silicon nitride (SiN). The second buffer layer 120 may include the same material or substantially the same material as that of the first buffer layer 110. The second buffer layer 120 may extend beyond the light blocking pattern 115. For example, the second buffer layer 120 may be in direct contact with the first buffer layer 110 outside the light blocking pattern 115.

[0064] The lower passivation layer 130 may be disposed on the driving circuit. The lower passivation layer 130 may prevent the driving circuit from being damaged due to external impact and moisture. For example, the upper surface of each thin film transistor 200 opposite to the device substrate 100 may be covered by the lower passivation layer 130. The lower passivation layer 130 may include an insulating material. For example, the lower passivation layer 130 may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN).

[0065] The lower planarization layer 140 and the upper planarization layer 150 may be sequentially stacked on the lower passivation layer 130. The lower planarization layer 140 and the upper planarization layer 150 may remove the thickness difference caused by the driving circuit. For example, the upper surface of the upper planarization layer 150 facing the light emitting device 300 may be a flat surface. The lower planarization layer 140 and the upper planarization layer 150 may include an insulating material. For example, the lower planarization layer 140 and the upper planarization layer 150 may include an organic insulating material. The upper planarization layer 150 may include a material different from that of the lower planarization layer 140. Therefore, in the touch display device according to the embodiment of the present disclosure, the thickness difference caused by the driving circuit may be effectively removed.

[0066] The pixel electrode 310, the light emitting layer 320 and the first upper electrode 330a of each light emitting device 300 may be sequentially stacked on the upper planarization layer 150. For example, the pixel electrode 310 of each light emitting device 300 may be electrically connected to one of the thin film transistors 200. The intermediate electrode 510 may be disposed between the lower planarization layer 140 and the upper planarization layer 150. The intermediate electrode 510 may include a conductive material. For example, the intermediate electrode 510 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo) and tungsten (W). Each of the intermediate electrodes 510 may be electrically connected to the drain electrode 260 of one of the thin film transistors 200 by penetrating the lower planarization layer 140. For example, the pixel electrode 310 of each light emitting device 300 may be connected to the corresponding thin film transistor 200 through one of the intermediate electrodes 510. Each of the intermediate electrodes 510 may include a portion overlapping with the drain electrode 260 of one of the thin film transistors 200 and a portion overlapping with the pixel electrode 310 of one of the light emitting devices 300. For example, the pixel electrode 310 of each light emitting device 300 may be connected to the corresponding intermediate electrode 510 by penetrating the upper planarization layer 150 .

[0067] The bank insulation layer 160 may be disposed on the upper planarization layer 150. The bank insulation layer 160 may include an insulating material. For example, the bank insulation layer 160 may include an organic insulating material. The bank insulation layer 160 may include a material different from that of the lower planarization layer 140 and the upper planarization layer 150. The bank insulation layer 160 may cover the edge of each pixel electrode 310. The light emitting layer 320 and the first upper electrode 330a of each light emitting device 300 may be stacked on a portion of the corresponding pixel electrode 310 exposed by the bank insulation layer 160. For example, the light emitting area EA of the device substrate 100 may be defined by the bank insulation layer 160. For example, the non-light emitting area NEA of the device substrate 100 may overlap with the bank insulation layer 160.

[0068] The light emitted from each light emitting device 300 may show a color different from the color of the light emitted from the adjacent light emitting device 300. For example, the light emitting layer 320 of each light emitting device 300 may include a material different from that of the light emitting layer 320 of the adjacent light emitting device 300. The light emitting layer 320 of each light emitting device 300 may be spaced apart from the light emitting layer 320 of the adjacent light emitting device 300. For example, the light emitting layer 320 of each light emitting device 300 may include an end portion disposed on the bank insulating layer 160.

[0069] The voltage applied to the first upper electrode 330a of each light emitting device 300 may be the same as the voltage applied to the first upper electrode 330a of the light emitting device 300 disposed adjacent to the corresponding light emitting device 300 in the first direction. For example, the first upper electrode 330a of each light emitting device 300 may be electrically connected to the first upper electrode 330a of the light emitting device 300 disposed adjacent to the corresponding light emitting device 300 in the first direction. The first upper electrode 330a of each light emitting device 300 may include the same material or substantially the same material as the first upper electrode 330a of the light emitting device 300 disposed adjacent to the corresponding light emitting device 300 in the first direction. For example, the first upper electrode 330a of each light emitting device 300 may extend over the light emitting region EA disposed adjacent to the corresponding light emitting device 300 in the first direction. The first upper electrode 330a of each light emitting device 300 may be in direct contact with the first upper electrode 330a of the light emitting device 300 disposed adjacent to the first direction. The light emitting region EA may be arranged in a zigzag shape. For example, each light emitting region EA may be arranged to alternate with the light emitting region EA disposed adjacent to the corresponding light emitting region EA in the first direction. The first upper electrode 330 a of each light emitting device 300 may extend in a zigzag shape.

[0070] The first upper electrode 330a of each light emitting device 300 may be spaced apart from the first upper electrode 330a of the light emitting device 300 adjacently disposed in a second direction perpendicular to the first direction. For example, the second upper electrode 330b may be disposed between the first upper electrodes 330a adjacently disposed in the second direction. The second upper electrode 330b may extend side by side with the first upper electrode 330a. The second upper electrode 330b may have the same shape as that of the first upper electrode 330a. For example, each second upper electrode 330b may extend in a zigzag shape. The second upper electrode 330b may be disposed outside the light emitting area EA. For example, each of the second upper electrodes 330b may extend between the light emitting areas EA.

[0071] The second upper electrode 330b may include a conductive material. For example, the second upper electrode 330b may include a transparent material. For example, the second upper electrode 330b may be a transparent electrode including a transparent conductive material such as ITO and IZO. The second upper electrode 330b may include the same material as the material of the first upper electrode 330a or substantially the same material. For example, the second upper electrode 330b may be formed simultaneously with the first upper electrode 330a. The second upper electrode 330b may be disposed on the bank insulating layer 160. The second upper electrode 330b may be separated from the first upper electrode 330a. For example, a spacer 175 having a side surface of an inverted cone may be disposed between the first upper electrode 330a and the second upper electrode 330b. Each spacer 175 may extend between the first upper electrode 330a and the second upper electrode 330b. The spacer 175 may be disposed on the bank insulating layer 160. Therefore, in the touch display device according to the embodiment of the present disclosure, the first upper electrode 330a and the second upper electrode 330b can be formed simultaneously in the process of depositing the transparent conductive material on the bank insulating layer 160 without an additional patterning process. For example, an electrode pattern 330p including the same material or substantially the same material as that of the first upper electrode 330a and the second upper electrode 330b can be provided on the upper surface of each partition 175. Therefore, in the touch display device according to the embodiment of the present disclosure, process efficiency can be improved.

[0072] The partitions 175 may include an insulating material. For example, the partitions 175 may include an organic insulating material. Each of the partitions 175 may have a multi-layer structure. For example, each of the partitions 175 may have a stacked structure including layers of materials having an etching selectivity.

[0073] The first link line 550 may be disposed between the lower planarization layer 140 and the upper planarization layer 150. Each of the first upper electrodes 330a may be electrically connected to one of the first link lines 550. For example, the upper planarization layer 150 and the bank insulation layer 160 may include a first electrode contact hole exposing a portion of each first link line 550. Each first upper electrode 330a may include a portion overlapping one of the first electrode contact holes. For example, each of the first upper electrodes 330a may directly contact the corresponding first link line 550 through one of the first electrode contact holes.

[0074] The first link line 550 may include a conductive material. For example, the first link line 550 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The first link line 550 may include the same material or substantially the same material as the material of the intermediate electrode 510. The first link line 550 may extend in the second direction. The first link line 550 may be insulated from the intermediate electrode 510. For example, the first link line 550 may be spaced apart from the intermediate electrode 510 in the first direction.

[0075] The first link line 550 may be electrically connected to a power voltage supply source. For example, a power voltage may be applied to each of the first upper electrodes 330a through the corresponding first link line 550. Each of the first upper electrodes 330a may be connected to the same first link line 550 as the first upper electrode 330a disposed adjacent to the corresponding first upper electrode 330a in the second direction. Therefore, in the touch display device according to the embodiment of the present disclosure, a brightness difference due to a voltage drop may be prevented.

[0076] The second link line 520 may be disposed between the lower planarization layer 140 and the upper planarization layer 150. The second link line 520 may include a conductive material. For example, the second link line 520 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The second link line 520 may include the same material or substantially the same material as the material of the intermediate electrode 510 and the first link line 550. The second link line 520 may extend parallel to the first link line 550. For example, the second link line 520 may extend in the second direction. The second link line 520 may be spaced apart from the intermediate electrode 510 and the first link line 550 in the first direction.

[0077] The second link line 520 may be electrically connected to the second upper electrode 330b. For example, the upper planarization layer 150 and the bank insulation layer 160 may include a second electrode contact hole exposing a portion of each second link line 520. Each of the second upper electrodes 330b may include a portion overlapping one of the second link lines 520. For example, each of the second upper electrodes 330b may be in direct contact with the corresponding second link line 520 through one of the second electrode contact holes. Each of the second upper electrodes 330b may be connected to the same second link line 520 as the second upper electrode 330b disposed adjacent to the corresponding second upper electrode 330b in the second direction. Therefore, in the touch display device according to an embodiment of the present disclosure, the signal applied to the second upper electrode 330b may be different from the signal applied to the first upper electrode 330a.

[0078] The encapsulation element 400 may be disposed on the first upper electrode 330a, the second upper electrode 330b, and the partition 175. The encapsulation element 400 may prevent the light emitting device 300 from being damaged due to external impact and moisture. The encapsulation element 400 may have a multilayer structure. For example, the encapsulation element 400 may include a first encapsulation layer 410, a second encapsulation layer 420, and a third encapsulation layer 430 stacked in sequence. The first encapsulation layer 410, the second encapsulation layer 420, and the third encapsulation layer 430 may include an insulating material. The second encapsulation layer 420 may include a material different from that of the first encapsulation layer 410 and the third encapsulation layer 430. For example, the first encapsulation layer 410 and the third encapsulation layer 430 may include an inorganic insulating material, and the second encapsulation layer 420 may include an organic insulating material. Therefore, in the touch display device according to the embodiment of the present disclosure, damage to the light emitting device 300 due to external impact and moisture may be effectively prevented. The thickness difference caused by the light emitting device 300 and the partition 175 may be removed by the second encapsulation layer 420. For example, an upper surface of the package member 400 opposite to the device substrate 100 may be a flat surface. The side surface of each of the spacers 175 having the reverse tapered shape may be covered by the package member 400 .

[0079] At least one encapsulation dam 106 may be disposed on the device substrate 100. The encapsulation dam 106 may block the flow of the second encapsulation layer 420 having relatively high fluidity. For example, the second encapsulation layer 420 may be disposed on a portion of the device substrate 100 defined by the encapsulation dam 106. The first encapsulation layer 410 and the third encapsulation layer 430 may extend along the surface of the encapsulation dam 106. For example, the third encapsulation layer 430 may be in direct contact with the first encapsulation layer 410 outside the encapsulation dam 106. The encapsulation dam 106 may include an insulating material. For example, the encapsulation dam 106 may include an organic insulating material. The encapsulation dam 106 may be disposed on the lower passivation layer 130. For example, the encapsulation dam 106 may include the same material or substantially the same material as the lower planarization layer 140 or the upper planarization layer 150. Therefore, in the touch display device according to the embodiment of the present disclosure, the process efficiency may be improved.

[0080] The touch display device according to the embodiment of the present disclosure can sense the touch of the user and / or the tool. For example, the driving components DD, SD, TD and TC may include a touch sensing component TD. The touch line 700 electrically connected to the touch sensing component TD and the cover insulating layer 800 disposed on the touch line 700 may be disposed on the package element 400. The touch line 700 may include a conductive material. For example, the touch line 700 may include metals such as chromium (Cr), molybdenum (Mo) and tungsten (W). The touch buffer layer 600 may be disposed between the package element 400 and the touch line 700. The touch buffer layer 600 may prevent the light emitting device 300 from being damaged in the process of forming the touch line 700. The touch buffer layer 600 may include an insulating material. For example, the touch buffer layer 600 may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The cover insulating layer 800 may include an insulating material. The cover insulating layer 800 may include a material different from the material of the touch buffer layer 600. For example, the cover insulating layer 800 may include an organic insulating material. The cover insulating layer 800 may remove a thickness difference due to the touch wire 700 .

[0081] Each touch line 700 may cross the first upper electrode 330a and the second upper electrode 330b. For example, the touch line 700 may extend in the second direction. The touch line 700 may be disposed outside the light emitting area EA. For example, the touch line 700 may be disposed between the first link line 550 and the second link line 520.

[0082] The second link line 520 may be electrically connected to the touch sensing part TD. The touch sensing part TD may apply a touch drive signal Tx and a touch sensing signal Rx to the display panel DP. For example, the touch drive signal Tx may be applied to each second upper electrode 330b through the second link line 520, and the touch sensing signal Rx may be applied to each touch line 700.

[0083] Therefore, the touch display device according to the embodiment of the present disclosure can sense the touch of the user and / or the tool by using the second upper electrode 330b and the touch wire 700, wherein the second upper electrode 330b may be disposed between the non-light emitting area NEA of the device substrate 100 and the encapsulation layer 400, and wherein the touch wire 700 may be disposed on the encapsulation layer 400. Therefore, in the touch display device according to the embodiment of the present disclosure, the process of forming the touch wire 700 on the encapsulation element 400 can be simplified. Therefore, in the touch display device according to the embodiment of the present disclosure, the process efficiency can be improved.

[0084] In addition, in the touch display device according to the embodiment of the present disclosure, the signal applied to the first upper electrode 330a overlapping the light emitting area EA may not be affected by sensing touch. Therefore, in the touch display device according to the embodiment of the present disclosure, sensing touch and realizing an image may be performed simultaneously.

[0085] The display panel DP may be electrically connected to the driving components DD, SD, TD, and TC through the pads 520p, 550p, and 700p. For example, a first link pad 550p electrically connected to the first link line 550, a second link pad 520p electrically connected to the second link line 520, and a touch pad 700p electrically connected to the touch line 700 may be disposed on a portion of the device substrate 100. The first link pad 550p, the second link pad 520p, and the touch pad 700p may be disposed outside the package dam 106. For example, the first link pad 550p, the second link pad 520p, and the touch pad 700p may be spaced apart from the package element 400.

[0086] Each of the first link lines 550 may be connected to one of the first link pads 550p by extending along the lower passivation layer 130. For example, each of the first link pads 550p may include a first lower link pad 551p having the same material or substantially the same material as the first link line 550. The touch buffer layer 600 may extend beyond the package dam 106. For example, the touch buffer layer 600 may include a first pad contact hole partially exposing the first lower link pad 551p of each first link pad 550p. Each of the first link pads 550p may include a first upper link pad 552p disposed on the touch buffer layer 600. The first upper link pad 552p of each first link pad 550p may be connected to the first lower link pad 551p of the corresponding first link pad 550p through one of the first pad contact holes. The first upper link pad 552p of each first link pad 550p may include a conductive material. For example, the first upper link pad 552p of each first link pad 550p may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The first upper link pad 552p of each first link pad 550p may include the same material or substantially the same material as the material of the conductive layer disposed on the first link line 550. For example, the first upper link pad 552p of each first link pad 550p may include the same material or substantially the same material as the material of the touch line 700.

[0087] Each second link line 520 can be connected to one of the second link pads 520p by extending along the lower passivation layer 130. Each second link pad 520p can have a stacked structure that is the same as the stacked structure of the first link pad 550p. For example, each of the second link pads 520p can have a stacked structure of a second lower link pad and a second upper link pad. The second lower link pad of each second link pad 520p may include the same material or substantially the same material as the material of the second link line 520. The second upper link pad of each second link pad 520p may include the same material or substantially the same material as the material of the touch line 700. For example, the touch buffer layer 600 may include a second pad contact hole that exposes a portion of each second lower link pad. The second upper link pad of each second link pad 520p can be connected to the second lower link pad of the corresponding second link pad 520p through one of the second pad contact holes.

[0088] Each of the touch lines 700 may be connected to one of the touch pads 700p by extending along the touch buffer layer 600. For example, each of the touch lines 700 may extend beyond the package dam 106 along the surface of the package element 400 opposite to the device substrate 100. Each of the touch pads 700p may have a stacked structure that is the same as the stacked structure of the first link pad 550p and the second link pad 520p. For example, each of the touch pads 700p may have a stacked structure of a lower touch pad 701p and an upper touch pad 702p. The lower touch pad 701p of each of the touch pads 700p may be disposed on the same layer as the first lower link pad 551p. For example, the lower touch pad 701p of each touch pad 700p may be disposed between the lower passivation layer 130 and the touch buffer layer 600. The lower touch pad 701p of each touch pad 700p may include the same material or substantially the same material as the material of the first lower link pad 551p. The touch buffer layer 600 may include a touch pad contact hole partially exposing the lower touch pad 701p of each touch pad 700p. The upper touch pad 702p of each touch pad 700p may be disposed on the touch buffer layer 600. For example, the upper touch pad 702p of each touch pad 700p may be connected to the lower touch pad 701p of the corresponding touch pad 700p through one of the touch pad contact holes. The upper touch pad 702p of each touch pad 700p may include the same material or substantially the same material as the material of the touch line 700. For example, the upper touch pad 702p of each touch pad 700p may be in direct contact with the corresponding touch line 700.

[0089] The touch display device according to an embodiment of the present disclosure is described as performing image realization and touch sensing at the same time. However, in a touch display device according to another embodiment of the present disclosure, the first upper electrode 330a can be selectively connected to the touch sensing component TD through the first link line 550, and the second upper electrode 330b can be selectively connected to the touch sensing component TD through the second link line 520. For example, in a touch display device according to another embodiment of the present disclosure, both the first upper electrode 330a and the second upper electrode 330b can be used as touch electrodes. For example, in a touch display device according to another embodiment of the present disclosure, each frame can be divided into a display period and a touch period. During the display period of each frame, a power supply voltage can be provided to the first upper electrode 330a. During the touch period of each frame, a touch drive signal Tx can be applied to the first upper electrode 330a. Therefore, in a touch display device according to another embodiment of the present disclosure, the accuracy of touch sensing can be improved.

[0090] The touch display device according to an embodiment of the present disclosure is described as sensing the touch of a user and / or a tool by using the second upper electrode 330b on the non-emission area NEA of the device substrate 100. However, in a touch display device according to another embodiment of the present disclosure, the first upper electrode 330a and the touch line 700 overlapping a portion of the emission area EA may sense the touch of a user and / or a tool. For example, in a touch display device according to another embodiment of the present disclosure, as shown in FIG. Figure 6 As shown, the first upper electrodes 330a extending in the first direction may be separated from each other by the partition 175. The light emitting area EA may overlap with one of the first upper electrodes 330a. The touch line 700 may cross the first upper electrode 330a. Each of the first upper electrodes 330a may be selectively connected to the touch sensing component through one of the first link lines 550. Therefore, in the touch display device according to another embodiment of the present disclosure, the number of signal lines for sensing touch and the area occupied by the signal lines may be minimized. Therefore, in the touch display device according to another embodiment of the present disclosure, the process of forming the components for sensing touch may be simplified.

[0091] The touch display device according to an embodiment of the present disclosure is described as the second upper electrode 330b for sensing touch intersecting the touch line 700. However, in a touch display device according to another embodiment of the present disclosure, the electrodes for sensing touch may be arranged in various shapes. For example, in a touch display device according to another embodiment of the present disclosure, as shown in FIG. Figure 7As shown, the first upper electrodes 330a separated by the partition 175 may extend in parallel with the touch line 700. For example, each of the first upper electrodes 330a may overlap with one of the touch lines 700. The first link line 550 that applies the power supply voltage or the touch signal to the first upper electrode 330a may extend in parallel with the touch line 700. For example, each of the first upper electrodes 330a may include a portion overlapping with the corresponding first link line 550. Therefore, in the touch display device according to another embodiment of the present disclosure, the degree of freedom of the shape of the first upper electrode 330a can be improved.

[0092] According to an embodiment of the present disclosure, a touch display device may include: a device substrate including a light-emitting area; pixel electrodes, each of the pixel electrodes is arranged on one of the light-emitting areas of the device substrate; a dam insulating layer, which is located on the device substrate, and the dam insulating layer covers the edge of each pixel electrode; a light-emitting layer, each of the light-emitting layers is arranged on a portion of one of the pixel electrodes exposed by the dam insulating layer; a first upper electrode, which is located on the dam insulating layer and the light-emitting layer, and the first upper electrode extends in a first direction; a first link line, which is arranged between the device substrate and the dam insulating layer, and the first link line is connected to the first upper electrode; a packaging element, which is located on the first upper electrode; and a touch line, which is located on the packaging element, and the touch line includes a portion overlapping with the first upper electrode.

[0093] As a result, the touch display device according to the embodiment of the present disclosure may include a touch line arranged on the packaging element covering the light-emitting device, wherein the upper electrode of the light-emitting device may extend in one direction, and wherein the touch line may include a portion overlapping the upper electrode. For example, in the touch display device according to the embodiment of the present disclosure, the touch of the user and / or the tool may be sensed by the upper electrode of the light-emitting device and the touch line. Therefore, in the touch display device according to the embodiment of the present disclosure, the components for sensing the touch may be simplified. Thus, in the touch display device according to the embodiment of the present disclosure, the process efficiency may be improved.

[0094] CROSS-REFERENCE TO RELATED APPLICATIONS

[0095] This application claims priority to Korean Patent Application No. 10-2020-0189506, filed on December 31, 2020, which is incorporated herein by reference as if fully set forth herein.

Claims

1. A touch display device, comprising: a device substrate, the device substrate comprising a light emitting region; a pixel electrode, each of the pixel electrodes being disposed on one of the light emitting regions of the device substrate; a bank insulating layer, the bank insulating layer being located on the device substrate and covering an edge of each pixel electrode; a light emitting layer, each of the light emitting layers being disposed on a portion of one of the pixel electrodes exposed by the bank insulating layer; a first upper electrode, the first upper electrode being located on the bank insulating layer and the light emitting layer, and the first upper electrode extending in a first direction; a first link line, the first link line being disposed between the device substrate and the bank insulating layer, the first link line being connected to the first upper electrode; A packaging component, wherein the packaging component is located on the first upper electrode; as well as A touch line is located on the packaging component, and the touch line includes a portion overlapping the first upper electrode.

2. The touch display device according to claim 1, wherein: The first upper electrode is selectively connected to a touch sensing element through the first link line.

3. The touch display device according to claim 1, wherein: The first upper electrode and another first upper electrode disposed adjacent to the first upper electrode in a second direction perpendicular to the first direction are connected to the first link line.

4. The touch display device according to claim 1, wherein: The packaging element is a multi-layer structure having an inorganic insulating layer and an organic insulating layer.

5. The touch display device according to claim 1, wherein: The first upper electrode has a higher transmittance than the pixel electrode.

6. The touch display device according to claim 1, wherein: The touch line extends in a second direction perpendicular to the first direction.

7. The touch display device according to claim 1, further comprising: a second upper electrode, the second upper electrode extending side by side with the first upper electrode; as well as a second link line, the second link line being disposed between the device substrate and the bank insulating layer, the second link line being connected to the second upper electrode, Wherein, the second link line is spaced apart from the first link line.

8. The touch display device according to claim 7, wherein: The second upper electrode and another second upper electrode disposed adjacent to the second upper electrode in a second direction perpendicular to the first direction are connected to the second link line.

9. The touch display device according to claim 7, wherein: The signal applied to the second upper electrode is different from the signal applied to the first upper electrode.

10. The touch display device according to claim 7, wherein: The second upper electrode includes the same material as that of the first upper electrode.

11. The touch display device according to claim 7, wherein: The second link line includes a same material as that of the first link line.

12. The touch display device according to claim 7, wherein: The first upper electrode is insulated from the second link line, and the second upper electrode is insulated from the first link line.

13. The touch display device according to claim 7, wherein: The light emitting regions are arranged in a zigzag shape, and wherein the first upper electrode and the second upper electrode extend in the zigzag shape.

14. The touch display device according to claim 13, wherein: The second upper electrode extends between the light emitting regions.

15. The touch display device according to claim 1, wherein: The touch wires extend between the light emitting areas.

16. The touch display device according to claim 1, further comprising a spacer, wherein the spacer is located on the bank insulating layer. in, The spacer has an inversely tapered side, and wherein the spacer extends along an edge of the first upper electrode.

17. A touch display device, comprising: A device substrate, the device substrate having: Luminous area; as well as a non-luminous region, wherein the non-luminous region is arranged outside the luminous region; light emitting layers, each of the light emitting layers overlapping a corresponding light emitting region of the device substrate; An upper electrode, the upper electrode comprising: a first upper electrode, the first upper electrode extending in a first direction, the first upper electrode overlapping the light emitting layer; and a second upper electrode extending in the first direction and deviating from the first upper electrode in a second direction perpendicular to the first direction; a packaging component, the packaging component being located on the upper electrode; and A touch line is located on the packaging component, and the touch line extends in the second direction.

18. The touch display device according to claim 17, further comprising a packaging dam, in, The package element extends beyond the package dam, and Wherein, the touch line extends beyond the packaging dam.

19. The touch display device according to claim 18, further comprising: A touch pad, wherein the touch pad comprises an upper touch pad and a lower touch pad; as well as A touch buffer layer is located between the touch line and the package element, the touch buffer layer extends beyond the package dam and extends above the touch pad, the touch buffer layer exposes the lower touch pad, and the upper touch pad is connected to the lower touch pad through the touch buffer layer.

20. The touch display device according to claim 18, further comprising: a first link line, the first link line extending parallel to the touch line; as well as a first link pad, the first link pad being electrically connected to the first link line, the first link pad comprising a first upper link pad and a first lower link pad; Wherein, the first link line is located between the device substrate and the light-emitting layer, The first upper link pad comprises a material that is the same as that of the touch line.

21. The touch display device according to claim 18, further comprising: A covering insulating layer is located above the touch line.

22. The touch display device according to claim 17, further comprising: a separator, the separator laterally separating the first upper electrode from the second upper electrode, Wherein, the touch line overlaps with the separator.

23. The touch display device according to claim 22, further comprising: a first link line, the first link line being electrically connected to the first upper electrode; as well as a second link line electrically connected to the second upper electrode; Wherein, the first link line and the second link line are located on two opposite sides of the separator.

24. The touch display device according to claim 23, wherein: The first link line and the second link line extend in the second direction and are disposed over the non-light emitting region of the device substrate.

Images