Touch display device

Abstract

This disclosure provides a touch display device for minimizing view-view dependent variations in color coordinates. The touch display device includes: a light-emitting element disposed in each of a plurality of sub-pixels comprising emitting regions of different sizes; a plurality of touch electrodes disposed on the light-emitting element; and at least one opening formed in each of the plurality of touch electrodes. The width of the opening is formed differently in each of the plurality of sub-pixels comprising emitting regions of different sizes, thereby minimizing view-view dependent variations in color coordinates.

Description

[0001] This application claims priority to Korean Patent Application No. P2019-0169943, filed on December 18, 2019, which is incorporated herein by reference as if fully set forth herein. Technical Field

[0002] The present invention relates to a touch display device, and more particularly, to a touch display device for minimizing the view-dependent variation of color coordinates. Background Technology

[0003] A touch sensor is an input device that allows a user to input commands by selecting instructions displayed on a screen using their hand or an object. In other words, the touch sensor converts the point of contact with a person's hand or object into an electrical signal and receives the selected instruction as an input signal based on that contact point. Such touch sensors can replace separate input devices (e.g., keyboards or mice) connected to and operated by a display device, and therefore the applications of touch sensors are constantly expanding.

[0004] Recently, active research and development have been carried out on the following touch display device: in which the touch electrode 50 constituting the touch sensor is disposed on a display panel including display elements such as light-emitting elements 10 or liquid crystal elements, such as... Figure 1 As shown.

[0005] However, when a user uses the touch display device from a side viewing angle rather than a front viewing angle, a portion of the light generated in the light-emitting element 10 may not radiate to the outside due to the presence of the touch electrode 50. Therefore, while white is typically achieved when the user uses the touch display device from a front viewing angle, the color coordinates change when the user uses it from a side viewing angle, and thus white is typically not achieved. Specifically, although the emission areas of the sub-pixels differ in size, the area where light is blocked by the touch electrode is the same from a side viewing angle, resulting in a large change in color coordinates from the side viewing angle. Summary of the Invention

[0006] Therefore, the present invention relates to a touch display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the prior art.

[0007] The object of this invention is to provide a touch display device for minimizing the view-dependent variation of color coordinates.

[0008] Additional advantages, objects, and features of the invention will be set forth in part in the description which follows, and will also become apparent in part to those skilled in the art upon reading the following, or may be learned by practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures specifically pointed out in the written description and the claims therein, as well as in the accompanying drawings.

[0009] To achieve these and other advantages and according to the purposes of the invention, as embodied and broadly described herein, a touch display device includes: a light-emitting element disposed in each of a plurality of sub-pixels comprising emitting regions of different sizes; a plurality of touch electrodes disposed on the light-emitting element; and at least one opening formed in each of the plurality of touch electrodes. The width of the opening is formed differently in each of the plurality of sub-pixels comprising emitting regions of different sizes.

[0010] It should be understood that both the foregoing general description of the invention and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed invention. Attached Figure Description

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

[0012] Figure 1 This is a cross-sectional view showing a conventional touch display device;

[0013] Figure 2 This is a plan view showing a touch display device according to the present invention;

[0014] Figure 3 It is shown Figure 2 A perspective view of the touch display device shown;

[0015] Figure 4 It is along Figure 3 A cross-sectional view of the touch display device taken by line I-I';

[0016] Figure 5 It is shown Figure 2 and Figure 3 A view showing the relationship between the touch electrodes and sub-pixels;

[0017] 6A to 6D It is shown Figure 5 A plan view of an embodiment of the touch electrode shown;

[0018] Figure 7This is a view showing the emitting area in the front view and the emitting area in the side view of the touch display device according to the present invention;

[0019] Figure 8A It is shown in detail Figure 2 The plan view of the first area A1 shown;

[0020] Figure 8B It is shown in detail Figure 2 The plan view of the second area A2 shown; and

[0021] Figure 9 It is shown Figure 2 A plan view of another embodiment of the wiring shown. Detailed Implementation

[0022] Exemplary embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.

[0023] Figure 2 This is a plan view showing a touch display device according to the present invention.

[0024] Figure 2 The touch display device shown includes: a plurality of touch electrodes 150 (T11 to T76); and touch lines 160 connected to the respective touch electrodes 150.

[0025] Each touch electrode in touch electrode 150 includes a capacitor formed therein, and therefore each touch electrode in touch electrode 150 is used as a self-capacitance touch sensor to sense changes in capacitance caused by a user touch. In this self-capacitance sensing method using touch electrode 150, when a drive signal provided via touch line 160 is applied to touch electrode 150, charge Q accumulates in the touch sensor. At this time, when the user's finger or a conductive object touches touch electrode 150, parasitic capacitance is additionally connected to the self-capacitance sensor, and therefore the capacitance value changes. Therefore, the presence or absence of a touch can be determined based on the difference in capacitance value between the touch sensor touched by a finger and the touch sensor not touched by a finger.

[0026] like Figure 3 As shown, the touch electrodes 150 are separated from each other and formed independently on the encapsulation unit 140 along a first and a second direction that intersect each other. Considering the size of the area touched by the user, each touch electrode 150 is formed in an area corresponding to multiple sub-pixels. For example, a touch electrode 150 is formed in an area several to hundreds of times larger than the size of a sub-pixel.

[0027] The touch electrodes 150 are formed to be the same size as each other. Therefore, the variation in touch sensitivity between the touch electrodes 150 is minimized, thus reducing noise.

[0028] Touch electrode 150 is connected to touch line 160, and therefore touch electrode 150 is connected to touch drive circuit (not shown).

[0029] The touch electrode 150 and touch line 160 of the present invention are directly formed on the display panel that generates the image. Specifically, as shown in the figure... Figure 3 and Figure 4 As shown, the touch display device according to the present invention includes: light-emitting elements 120 arranged in a matrix on a substrate 111; a packaging unit 140 disposed on the light-emitting elements 120; and a touch electrode 150 disposed on the packaging unit 140.

[0030] The substrate 111 is formed of a flexible material such as plastic or glass so that it can be folded or bent. For example, the substrate 111 is formed of polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyethersulfone (PES), polyacrylate (PAR), polysulfone (PSF), or cyclic olefin copolymer (COC).

[0031] A plurality of thin-film transistors 130, including those in a pixel driving circuit, are disposed on a substrate 111. Each of the thin-film transistors 130 includes: a semiconductor layer 134 disposed on a multi-buffered film 112; a gate electrode 132 overlapping the semiconductor layer 134, wherein a gate insulating film 102 is inserted between them; and a source electrode 136 and a drain electrode 138 formed on an interlayer insulating film 114 to contact the semiconductor layer 134. Here, the semiconductor layer 134 is formed of at least one of an amorphous semiconductor material, a polycrystalline semiconductor material, or an oxide semiconductor material.

[0032] The light-emitting element 120 includes: an anode 122; at least one light-emitting stack 124 formed on the anode 122; and a cathode 126 formed on the light-emitting stack 124.

[0033] The anode 122 is electrically connected to the drain electrode 138 in the thin-film transistor 130 exposed through the pixel contact hole 116, which penetrates the protective film 108 and the pixel planarization layer 118.

[0034] At least one light-emitting stack 124 is formed on an anode 122 in an emission region defined by a dam 128. The at least one light-emitting stack 124 is formed by stacking a hole-correlated layer, an organic emission layer, and an electron-correlated layer on the anode 122 in either a hole-correlated layer, an organic emission layer, and an electron-correlated layer, or in reverse order. Additionally, the light-emitting stack 124 may include a first light-emitting stack and a second light-emitting stack facing each other, wherein a charge-generating layer is inserted between the first and second light-emitting stacks. In this case, the organic emission layer of either the first or second light-emitting stack generates blue light, and the organic emission layer of the other light-emitting stack generates yellow-green light, thereby generating white light through the first and second light-emitting stacks. Since the white light generated in the light-emitting stack 124 is incident on a color filter located above or below the light-emitting stack 124, a color image can be realized. Alternatively, without a separate color filter, colored light corresponding to each sub-pixel can be generated in each light-emitting stack 124 to realize a color image. In other words, the light-emitting stack 124 of the red sub-pixel can generate red light, the light-emitting stack 124 of the green sub-pixel can generate green light, and the light-emitting stack 124 of the blue sub-pixel can generate blue light.

[0035] The cathode 126 is formed facing the anode 122, wherein a light-emitting stack 124 is inserted between them, and the cathode 126 is connected to a low-voltage power supply line.

[0036] The encapsulation unit 140 prevents external moisture or oxygen from penetrating the light-emitting element 120, which is susceptible to external moisture or oxygen. To this end, the encapsulation unit 140 includes at least one inorganic encapsulation layer 142 and at least one organic encapsulation layer 144. In this invention, the structure of the encapsulation unit 140, wherein the first inorganic encapsulation layer 142, the organic encapsulation layer 144, and the second inorganic encapsulation layer 146 are stacked in that order, will be described by way of example.

[0037] A first inorganic encapsulation layer 142 is formed on a substrate 111 on which a cathode 126 is formed. A second inorganic encapsulation layer 146 is formed on the substrate 111 on which an organic encapsulation layer 144 is formed, so as to cover the top surface, bottom surface and side surface of the organic encapsulation layer 144 together with the first inorganic encapsulation layer 142.

[0038] The first inorganic encapsulation layer 142 and the second inorganic encapsulation layer 146 minimize or prevent the penetration of external moisture or oxygen into the light-emitting stack 124. The first inorganic encapsulation layer 142 and the second inorganic encapsulation layer 146 are formed of inorganic insulating materials capable of low-temperature deposition, such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxide nitride (SiON), or aluminum oxide (Al2O3). Therefore, since the first inorganic encapsulation layer 142 and the second inorganic encapsulation layer 146 are deposited in a low-temperature environment, damage to the light-emitting stack 124, which is susceptible to high-temperature environments, can be prevented during the deposition process of the first inorganic encapsulation layer 142 and the second inorganic encapsulation layer 146.

[0039] The organic encapsulation layer 144 is used to suppress stress between the layers caused by bending of the organic light-emitting display device and to improve planarization performance. The organic encapsulation layer 144 is formed on a substrate 111 on which the first inorganic encapsulation layer 142 is formed: a non-photosensitive organic insulating material (e.g., PCL, acrylic resin, epoxy resin, polyimide, polyethylene, or silicon oxycarbide (SiOC)) or a photosensitive organic insulating material (e.g., photoacrylic acid). The organic encapsulation layer 144 is disposed in the active region, rather than in the non-active region.

[0040] A mesh-like touch electrode 150 and touch line 160 are disposed on the encapsulation unit 140. To prevent the increase of the capacitance of the parasitic capacitor between the touch electrode 150 and the cathode 126, a touch buffer film 148, which is implemented as an inorganic or organic insulating film, can be disposed between the encapsulation unit 140 and the touch electrode 150. In this case, the touch line 160 is disposed along the side surface of the touch buffer film 148. In a touch display device without the touch buffer film 148, the touch line 160 is disposed along the side surface of the second inorganic encapsulation layer 146.

[0041] Touch electrodes 150 and touch lines 160 are disposed in the same plane and formed of the same material. That is, touch electrodes 150 and touch lines 160 are disposed in a single-layer structure without an insulating film. Therefore, touch electrodes 150 and touch lines 160 can be formed by a single masking process. Furthermore, the thickness of the touch display device including touch electrodes 150 and touch lines 160 can be reduced.

[0042] The touch electrode 150 and touch line 160 are formed using a touch metal layer made of a material with high corrosion resistance, acid resistance, and good electrical conductivity (e.g., Ta, Ti, Cu, or Mo) in a single-layer or multi-layer structure. For example, the touch electrode 150 and touch line 160 are formed in a stacked three-layer structure such as Ti / Al / Ti, MoTi / Cu / MoTi, or Ti / Al / Mo.

[0043] A black matrix (not shown) can be provided on the touch electrode 150 and the touch line 160, and a color filter (not shown) can be provided between the black matrices.

[0044] The black matrix prevents the touch electrode 150 and touch line 160 from becoming visible due to reflection of external light. The color filter prevents the cathode 126 from becoming visible due to reflection of external light. Furthermore, the black matrix and color filter can be disposed between the touch electrode 150 and the packaging unit 140 to prevent an increase in the capacitance of the parasitic capacitor between the touch electrode 150 and the cathode 126.

[0045] The touch panel 170, which is connected to the touch line 160, is connected to a signal transmission membrane on which a touch driving circuit (not shown) is mounted.

[0046] Touchpad 170 includes a lower touchpad electrode 172 and an upper touchpad electrode 174 in contact with the lower touchpad electrode 172. The lower touchpad electrode 172 is disposed in the same plane as at least one of the gate electrode 132 or the drain electrode 138 and is formed of the same material. For example, the lower touchpad electrode 172 is formed of the same material as the drain electrode 138, and the lower touchpad electrode 172 is disposed in the same plane as the drain electrode 138, i.e., on the interlayer insulating film 114. The upper touchpad electrode 174 is disposed in the same plane as the touch electrode 150 and is formed of the same material. The upper touchpad electrode 174 is electrically connected to the lower touchpad electrode 172, which is exposed through touch electrode contact holes 176 penetrating the protective film 108 and the touch buffer film 148.

[0047] like Figure 5 As shown, the touch electrode 150 of the touch display device according to the present invention is formed having at least one opening 152r, 152g, and 152b therein. For example, the touch electrode 150 configured to surround the red (R) sub-pixel SP has a red opening 152r therein, the red opening 152r having a first width w1; the touch electrode 150 configured to surround the green (G) sub-pixel SP has a green opening 152g therein, the green opening 152g having a second width w2; and the touch electrode 150 configured to surround the blue (B) sub-pixel SP has a blue opening 152b therein, the blue opening 152b having a third width w3.

[0048] In this case, the linewidths of the red opening 152r, green opening 152g, and blue opening 152b are determined based on the size of the emission region of the light-emitting layer 124 exposed through the dam 128. The linewidths of the red opening 152r, green opening 152g, and blue opening 152b are inversely proportional to the size of the emission region of each sub-pixel SP. Here, the size of the emission region is determined by multiplying the width WR, WG, or WB of the light-emitting layer 124 exposed through the dam 128 in each sub-pixel SP by the height HR, HG, or HB of the light-emitting layer 124 exposed through the dam 128.

[0049] Specifically, the linewidth w1 of the red opening 152r, the linewidth w2 of the green opening 152g, and the linewidth w3 of the blue opening 152b are determined such that the proportion of the emission area in the corresponding sub-pixel, depending on whether the light is blocked by the touch electrode 150, is constant, as expressed by the following Equation 1. In Equation 1, "a" represents the width of the touch electrode 150.

[0050] Equation 1

[0051]

[0052] For example, among the multiple sub-pixels SP included in a unit pixel, the linewidth of the opening in the sub-pixel SP with the largest emission area is formed to be the narrowest, and the linewidth of the opening in the sub-pixel SP with the smallest emission area is formed to be the widest. For example, when the size of the emission area of ​​the red (R) sub-pixel SP is smaller than the size of the emission area of ​​the green (G) sub-pixel SP, the linewidth w1 of the red opening 152r is formed to be larger than the linewidth w2 of the green opening 152g, based on the size ratio between the emission areas of the red (R) sub-pixel SP and the green (G) sub-pixel SP. When the size of the emission area of ​​the green (G) sub-pixel SP is smaller than the size of the emission area of ​​the blue (B) sub-pixel SP, the linewidth w2 of the green opening 152g is formed to be larger than the linewidth w3 of the blue opening 152b, based on the size ratio between the emission areas of the green (G) sub-pixel SP and the blue (B) sub-pixel SP.

[0053] Specifically, the touch display device comprising unit pixels including green (G) sub-pixels SP having an emission area larger than that of red (R) sub-pixels SP and an emission area smaller than that of blue (B) sub-pixels SP includes... 6A to 6D Touch electrode 150 formed by any of the structures shown.

[0054] Figure 6A and Figure 6BThe touch electrode 150 shown has a red opening 152r and a green opening 152g. The green opening 152g is formed by removing a portion of the touch electrode 150 located at the lower end of the green (G) sub-pixel SP. The red opening 152r is formed to have a larger linewidth than the green opening 152g. Specifically, as... Figure 6A As shown, the red opening 152r is formed by removing a portion of the touch electrode 150 located at the lower end of the red (R) sub-pixel SP. Alternatively, as... Figure 6B As shown, the red opening 152r is formed by removing the entire lower end of the red (R) sub-pixel SP of the touch electrode 150.

[0055] Figure 6C The touch electrode 150 shown has a red opening 152r, a green opening 152g, and a blue opening 152b. The blue opening 152b is formed by removing a portion of the touch electrode 150 located at the lower end of the blue (B) sub-pixel SP. The green opening 152g is formed by removing a portion of the touch electrode 150 located at the lower end of the green (G) sub-pixel SP to have a larger linewidth than the blue opening 152b. The red opening 152r is formed by removing part or all of the touch electrode 150 located at the lower end of the red (R) sub-pixel SP, such that it has a larger linewidth than the green opening 152g.

[0056] Figure 6D The touch electrode 150 shown has a red opening 152r and a green opening 152g. The green opening 152g is formed by removing a portion of the touch electrode 150 located at the upper end of the green (G) sub-pixel SP. The red opening 152r is formed by removing part or all of the touch electrode 150 located at the upper end of the red (R) sub-pixel SP, thereby having a larger linewidth than the green opening 152g.

[0057] Typically, users of touch display devices view the device from bottom to top. Therefore, as... Figures 6A to 6C As shown, openings 152r, 152g, or 152b are preferably formed in each sub-pixel SP by removing the touch electrode 150 located at the lower end of each sub-pixel SP. However, as Figure 6D As shown, openings 152r, 152g, and 152b can be formed in each sub-pixel SP by removing the touch electrode 150 located at the top of each sub-pixel SP.

[0058] When a user uses a touch display device with touch electrodes 150 from a front-view perspective, such as Figure 7As shown, the light emitted from the emission areas AR1, AG1, and AB1 of the red (R) sub-pixel SP, green (G) sub-pixel SP, and blue (B) sub-pixel SP is not blocked by the touch electrode 150. Here, the forward viewing direction refers to the case where the angle between the touch electrode 150 and the user's line of sight is 90 degrees.

[0059] When a user uses the touch display device from a side viewing angle, the ratio of the light-blocking area to the emitting area in the red (R) sub-pixel SP, green (G) sub-pixel SP, and blue (B) sub-pixel SP is constant. Here, the side viewing angle refers to the case where the angle between the touch electrode 150 and the user's line of sight is equal to or greater than 45 degrees and less than 90 degrees.

[0060] Therefore, when viewed from the front viewpoint, the proportions of the emission regions AR1, AG1, and AB1 in the subpixel are the same as those when viewed from the side viewpoint. Thus, since the color coordinate characteristics at the front and side views are similar, the variation in color coordinate characteristics at the side viewpoint can be minimized.

[0061] Table 1 shows the proportion of the emission area in the sub-pixel depending on whether the light is blocked, according to Comparative Example 1 and Comparative Example 2 and the implementation method.

[0062] Table 1

[0063] Red subpixel Green subpixel Blue subpixel Comparison Example 1 72％ 93％ 94％ Comparison Example 2 77％ 93％ 94％ Implementation 94％ 94％ 94％

[0064] In Table 1, Comparative Example 1 represents a touch display device excluding the red opening 152r, green opening 152g, and blue opening 152b, and Comparative Example 2 represents a touch display device including only the red opening 152r. The embodiment includes a touch display device comprising: a red opening 152r formed by completely removing the touch electrode 150 disposed at the lower end of the red (R) sub-pixel SP; and a green opening 152g having a linewidth smaller than the red opening 152r, but excluding the blue opening 152b. Figure 6A As shown in Table 1, in Comparative Example 1 and Comparative Example 2, the proportion of the emitting area in the red (R) sub-pixel SP that depends on whether the light is blocked by the touch electrode 150 is lower than the proportion of the emitting area in the green (G) sub-pixel SP and the proportion of the emitting area in the blue (B) sub-pixel SP, thus causing a change in color coordinates. On the other hand, according to the embodiment, the proportions of the emitting area in the red (R) sub-pixel SP, the green (G) sub-pixel SP, and the blue (B) sub-pixel SP are constant, thereby preventing changes in color coordinates.

[0065] In addition, according to the present invention, the touch electrode 150 has openings 152r, 152g and 152b therein, thereby reducing the capacitance of the parasitic capacitor between the touch electrode 150 and the cathode 126 of the light-emitting element 120.

[0066] The invention is described by way of example with a structure in which openings 152r, 152g, and 152b are formed in the touch electrode 150. However, openings 152r, 152g, and 152b can also be formed in a vertically oriented configuration. Figure 8A The touch lines 160 between the touch electrodes 150 shown and formed in the horizontally arranged Figure 8B The touch line 160 between the touch electrodes 150 shown is provided with openings 152r, 152g, and 152b located at the lower end of the sub-pixel SP surrounded by the touch line 160. Therefore, the proportions of the emission areas in the red (R) sub-pixel SP, green (G) sub-pixel SP, and blue (B) sub-pixel SP corresponding to the touch line 160, depending on whether light is blocked by the touch line 160, are constant, thus preventing changes in color coordinates.

[0067] The touch line 160 according to the invention has been described by way of example as extending through the border area to the touchpad 170, such as... Figure 3 As shown. However, as Figure 9 As shown, the touch line 160 can extend to the touchpad 170 through the non-emission area between the touch electrodes 150.

[0068] The invention is described by way of example as having a structure in which a green subpixel has a larger emission area than a red subpixel and a smaller emission area than a blue subpixel. However, the invention is not limited thereto. For example, a red subpixel may have a larger emission area than a green (blue) subpixel, and a red subpixel may have a smaller emission area than a blue (green) subpixel. Alternatively, a blue subpixel may have a larger emission area than a green (red) subpixel, and a blue subpixel may have a smaller emission area than a red (green) subpixel.

[0069] Furthermore, although the self-capacitive touch sensor structure has been described by way of example, the present invention can also be applied to the mutual-capacitive touch sensor structure.

[0070] As is apparent from the above description, in the touch display device according to the invention, the touch electrode surrounding the respective sub-pixel has an opening therein, and the opening is formed inversely proportional to the size of the emitting area of ​​the respective sub-pixel. Therefore, the proportions of the emitting areas in the sub-pixel that depend on whether light is blocked by the touch electrode are similar (identical) to each other, thereby minimizing the viewing angle-dependent variation of the color coordinates.

[0071] In addition, the opening formed in the touch electrode can reduce the capacitance of the parasitic capacitor between the touch electrode and the cathode.

[0072] It will be apparent to those skilled in the art that various modifications and variations can be made to this invention without departing from its spirit or scope. Therefore, this invention is intended to cover such modifications and variations as long as they fall within the scope of the appended claims and their equivalents.

Claims

1. A touch display device, comprising: substrate; A light-emitting element is disposed in each of a plurality of subpixels comprising emitting regions of different sizes, and is disposed on the substrate; An encapsulation unit is disposed on the light-emitting element; Multiple touch electrodes are disposed on the packaging unit; as well as At least one opening is formed in each of the plurality of touch electrodes. The width of the opening is formed differently in each of the plurality of sub-pixels, which include emission regions of different sizes. The plurality of sub-pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that achieve different colors from each other. The second sub-pixel has a larger emission area than the first sub-pixel and a smaller emission area than the third sub-pixel. Among the plurality of touch electrodes, the touch electrode surrounding the first sub-pixel has a first opening therein, and the touch electrode surrounding the second sub-pixel has a second opening therein. The second opening has a smaller line width than the first opening. The first opening is formed by removing part or all of the touch electrode located at the lower end of the first sub-pixel. The second opening is formed by removing a portion of the touch electrode located at the lower end of the second sub-pixel.

2. The touch display device according to claim 1, wherein, The width of the opening is inversely proportional to the size of the emission region of the corresponding sub-pixel among the plurality of sub-pixels.

3. The touch display device according to claim 1, wherein, Of the plurality of touch electrodes, the touch electrode surrounding the third sub-pixel has a third opening therein, and The third opening has a smaller line width than the second opening.

4. The touch display device according to claim 1, further comprising: Touch lines, which are connected to the plurality of touch electrodes, The opening is formed in the touch line at the lower end of each of the plurality of sub-pixels surrounded by the touch line.

5. The touch display device according to claim 1, wherein, The first sub-pixel is the red sub-pixel. Wherein, the second sub-pixel is the green sub-pixel, and The third sub-pixel is the blue sub-pixel.

6. The touch display device according to claim 1, wherein, The packaging unit includes multiple inorganic packaging layers and at least one organic packaging layer.

7. The touch display device according to claim 6, wherein, At least one of the plurality of inorganic encapsulation layers has a first side surface that protrudes more than the second side surface of the at least one organic encapsulation layer.

8. The touch display device according to claim 6, further comprising: A touchpad that is electrically connected to the plurality of touch electrodes.

9. The touch display device according to claim 8, wherein, At least one of the plurality of inorganic encapsulation layers extends further toward the touchpad than the at least one organic encapsulation layer.

10. The touch display device according to claim 1, further comprising: The embankment is located below the encapsulation unit. The plurality of touch electrodes overlap with the embankment.

11. The touch display device according to claim 8, further comprising: A touch buffer film is disposed between the encapsulation unit and the plurality of touch electrodes.

12. The touch display device according to claim 11, wherein, The touchpad includes: The lower touch panel electrode on the substrate; and The upper touchpad electrode is connected to the lower touchpad electrode and is disposed on the touch buffer film.

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