Transparent touch display device

Abstract

The present application relates to a transparent touch display device. A transparent touch display device includes a device substrate, touch electrodes, and wiring. The device substrate may include a light-emitting region and a transmissive region. The touch electrodes may be disposed on the transmissive region of the device substrate. The wiring may be disposed outside the light-emitting region and the transmissive region of the device substrate. The transmittance of the touch electrodes may be higher than the transmittance of the wiring. Therefore, in the transparent touch display device, the reliability of touch detection can be improved.

Description

Technical Field

[0001] The present disclosure relates to a transparent touch display device in which touch electrodes and routing lines are provided on a device substrate including a light emitting area and a transmissive area. Background Art

[0002] Typically, electronic devices such as monitors, TVs, laptops, and digital cameras include a display device to display images. For example, a display device may include a light-emitting device. A light-emitting device can emit light that displays a specific color. For example, a light-emitting device may include a light-emitting layer between two electrodes.

[0003] In a display device, the device substrate may include a light-emitting region in which a light-emitting device is disposed, and a transmissive region disposed outside the light-emitting region. For example, when no image is being displayed, the display device may be a transparent display device that appears as transparent glass. The transparent display device may detect touch by a user and / or a tool. For example, the transparent display device may include touch electrodes and wiring disposed on the device substrate. Typically, the touch electrodes and wiring may be disposed outside the light-emitting region and the transmissive region. Summary of the Invention

[0004] The inventors of this application have newly recognized that increasing the number of touch electrodes and wiring disposed outside the luminous and transmissive regions for accurate touch detection may reduce the transmittance of a transparent display device. Furthermore, in a transparent display device, distortion of the touch signal may occur due to the density of wiring.

[0005] Accordingly, the present disclosure is directed to a transparent touch display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0006] An object of the present disclosure is to provide a transparent touch display device in which a reduction in transmittance is minimized and a touch of a user and / or a tool is accurately detected.

[0007] Another object of the present disclosure is to provide a transparent touch display device capable of improving the reliability of touch detection.

[0008] Additional advantages, objects, and features of the present invention will be set forth in part in the following description and in part will become apparent to those skilled in the art upon review of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and attained by the structures particularly pointed out in the written description and claims as well as in the accompanying drawings.

[0009] To achieve these objectives and other advantages, and in accordance with the purposes of the present invention, as embodied and broadly described herein, a transparent touch display device is provided that includes a device substrate. The device substrate includes a light-emitting region and a transmissive region. A light-emitting device and a packaging component are disposed on the device substrate. The light-emitting device is disposed on the light-emitting region of the device substrate. The packaging component covers the light-emitting device. Wiring and touch electrodes are disposed on the packaging component. The wiring is disposed outside the light-emitting region and the transmissive region. Touch electrodes are connected to the wiring. The touch electrodes extend over the transmissive region. The touch electrodes have a higher transmittance than the wiring.

[0010] The touch electrodes may be provided on the package element.

[0011] A touch insulating layer may be between the touch electrodes and the wirings, and the touch electrodes may be electrically connected to the wirings through touch contact holes in the touch insulating layer.

[0012] The color filter and black matrix can be placed on the packaging element. The color filter can overlap the light-emitting area. The black matrix can be placed side by side with the color filter. The black matrix can cover the wiring. The black matrix can be placed outside the light-emitting area and the transmissive area.

[0013] The touch electrode may include one of ITO and IZO.

[0014] The touch pad may be provided on the device substrate, may be spaced apart from the package element, and may comprise the same material as the wiring.

[0015] The wiring may include a first conductive layer on the package element and a second conductive layer on the first conductive layer. The transmittance of the first conductive layer may be higher than the transmittance of the second conductive layer.

[0016] The touch wire may extend between the light emitting area and the transmissive area. The touch wire may be connected to the wiring, overlap with the wiring, and extend in parallel with the wiring.

[0017] The second conductive layer may have higher conductivity than the first conductive layer.

[0018] The touch electrode may include the same material as the first conductive layer.

[0019] The touch electrodes may be provided on the same layer as the wirings.

[0020] In another embodiment, a transparent touch display device includes a device substrate. The device substrate includes a light-emitting region and a transmissive region. A light-emitting device is disposed on the light-emitting region of the device substrate. Touch electrodes are disposed side by side on the transmissive region of the device substrate. Wiring connected to the touch electrodes is disposed outside the light-emitting region and the transmissive region. Each of the touch electrodes is formed of a transparent conductive material. Furthermore, the wiring has a lower resistance than the touch electrode.

[0021] The wiring may include metal.

[0022] Each touch electrode may include a mesh-shaped touch pattern extending in a first direction and a second direction different from the first direction. For example, the second direction may be perpendicular to the first direction.

[0023] Each touch electrode may be connected to one of the wirings outside the light emitting area and the transmissive area.

[0024] The wiring may be covered by a touch insulating layer, and the touch electrode may be provided on the touch insulating layer.

[0025] A cover substrate may be disposed over the light-emitting device, touch electrodes, and wiring. A color filter, black matrix, and cover planarization layer may be disposed on the lower surface of the cover substrate facing the device substrate. The color filter may overlap the light-emitting area. The black matrix may be disposed side by side with the color filter. The black matrix may overlap the wiring. The cover planarization layer may cover the color filter and black matrix.

[0026] The light emitting device may be covered by an upper passivation layer. A cover passivation layer may be disposed on the upper passivation layer. An adhesive layer may be disposed between the upper passivation layer and the cover passivation layer. Wiring and touch electrodes may be disposed between the cover passivation layer and the cover planarization layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this application, illustrate embodiments of the present invention and together with the description serve to explain the principles of the present invention. In the drawings:

[0028] Figure 1 is a diagram schematically illustrating a transparent touch display device according to an embodiment of the present disclosure;

[0029] Figure 2 yes Figure 1 A magnified view of the K region in FIG;

[0030] Figure 3 It is along Figure 2 The figure taken from I-I';

[0031] Figure 4 It is along Figure 2 The II-II' intercepted figure;

[0032] Figures 5 to 8 is a diagram illustrating a transparent touch display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] Hereinafter, by referring to the following detailed description of the accompanying drawings illustrating some embodiments of the present disclosure, details related to the above-mentioned objects, technical configurations and operational effects of the embodiments of the present disclosure will be clearly understood. Here, the embodiments of the present disclosure are provided to allow the technical spirit of the present disclosure to be satisfactorily conveyed to those skilled in the art, and therefore the present disclosure can be implemented in other forms and is not limited to the embodiments described below.

[0034] In addition, throughout the specification, the same or very similar elements may be denoted by the same reference numerals, and in the drawings, the lengths and thicknesses of layers and regions may be exaggerated for convenience. It will be understood that when a first element is referred to as being "on" a second element, although the first element may be disposed on the second element to contact the second element, a third element may be interposed between the first and second elements.

[0035] 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.

[0036] 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, an element described in the singular is intended to include a plurality of elements, unless the context clearly indicates otherwise. In addition, in the specification of the present disclosure, it will also be understood that the terms "comprise" and "include" specify the presence of the features, integers, steps, operations, elements, components and / or combinations thereof, but do not exclude the presence or addition of one or more features, integers, steps, operations, elements, components and / or combinations.

[0037] 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 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 as idealized or overly formal unless explicitly defined as such herein.

[0038] (Implementation Method)

[0039] Figure 1 is a diagram schematically illustrating a transparent touch display device according to an embodiment of the present disclosure. Figure 2 yes Figure 1 Magnified view of the K region in . Figure 3 It is along Figure 2 Figure 1-1' is taken from the figure. Figure 4 It is along Figure 2FIG II-II' is taken from the figure.

[0040] Reference Figures 1 to 4 According to an embodiment of the present disclosure, a transparent touch display device 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 to the display panel DP to realize an image. For example, the driving components DD, SD, TD, and TC may include a data driver DD that applies data signals, a scan driver SD that applies scan signals, and a timing controller TC. The timing controller TC may apply video digital data and source timing control signals to the data driver DD, and apply a clock signal, a reset clock signal, and a start signal to the scan driver SD.

[0041] The display panel DP can generate images presented to the user. For example, the display panel DP may include at least one light-emitting device 300 disposed on a device substrate 100. The device substrate 100 may include an insulating material. For example, the device substrate 100 may include glass or plastic. Hereinafter, the light-emitting device 300 may be described as an organic light-emitting device as an example in the embodiments of the present disclosure, but the present disclosure is not limited thereto. For example, the light-emitting device 300 may be implemented as an inorganic light-emitting device such as a micro-LED or a QLED.

[0042] At least one driving circuit may be disposed on the device substrate 100. The driving circuit may be electrically connected to the light-emitting device 300. The driving circuit may be controlled by signals applied to the driving components DD, SD, TD, and TC. For example, the driving circuit may provide a driving current corresponding to a data signal to the light-emitting device based on a scan signal. The 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.

[0043] 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.

[0044] 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, the side surface 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.

[0045] 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 the channel region of the semiconductor pattern 210. For example, the channel region of the semiconductor pattern 210 may have a conductivity corresponding to the voltage applied to the gate electrode 230.

[0046] An interlayer insulating layer 240 may be provided on the gate electrode 230. The interlayer insulating layer 240 may extend beyond the gate electrode 230. For example, the side surface 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).

[0047] 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 that partially exposes 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.

[0048] 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 as 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 that partially exposes 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.

[0049] The first buffer layer 110 may be disposed between the device substrate 100 and the driving circuit. The first buffer layer 110 may prevent contamination caused by the device substrate 100 during the formation process of the thin film transistor 200. 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.

[0050] The light-blocking pattern 115 may be disposed between the device substrate 100 and the thin film transistor 200. The light-blocking pattern 115 may prevent changes in the characteristics of the thin film transistor 200 due to external light. For example, the light-blocking pattern 115 may include a portion overlapping the semiconductor pattern 210. The light-blocking pattern 115 may include a material capable of blocking or absorbing light. For example, the light-blocking pattern 115 may include a metal such as aluminum (Al), silver (Ag), and copper (Cu). The light-blocking pattern 115 may be insulated from the semiconductor pattern 210. For example, the light-blocking pattern 115 may be disposed between the device substrate 100 and the first buffer layer 110. The light-blocking pattern 115 may be in direct contact with the device substrate 100.

[0051] The lower passivation layer 120 may be provided on the driving circuit. The lower passivation layer 120 may prevent damage to the driving circuit due to external impact and moisture. For example, the upper surface of the thin film transistor 200 opposite to the device substrate 100 may be covered by the lower passivation layer 120. The lower passivation layer 120 may include an insulating material. For example, the lower passivation layer 120 may include an inorganic insulating material such as silicon oxide (SiO) and / or silicon nitride (SiN).

[0052] The lower planarization layer 130 may be disposed on the lower passivation layer 120. The lower planarization layer 130 may eliminate thickness differences caused by the driving circuit. For example, the upper surface of the lower planarization layer 130 facing the light-emitting device 300 may be a flat surface. The lower planarization layer 130 may include an insulating material. The lower planarization layer 130 may include a material different from that of the lower passivation layer 120. For example, the lower planarization layer 130 may include an organic insulating material.

[0053] The light emitting device 300 may be disposed on the lower planarization layer 130. The light emitting device 300 may emit light showing a specific color. For example, the light emitting device 300 may include a first electrode 310, a light emitting layer 320, and a second electrode 330 sequentially stacked.

[0054] The first electrode 310 may include a conductive material. The first electrode 310 may have a high reflectivity. For example, the first electrode 310 may include a metal such as aluminum (Al) and silver (Ag). The first electrode 310 may have a multilayer structure. For example, the first electrode 310 may have a structure in which a reflective electrode composed of a metal is disposed between transparent electrodes composed of a transparent conductive material such as ITO and IZO.

[0055] The first electrode 310 may be electrically connected to the thin film transistor 200. For example, the lower passivation layer 120 and the lower planarization layer 130 may include an electrode contact hole that partially exposes the drain electrode 260 of the thin film transistor 200. The first electrode 310 may include a portion overlapping the drain electrode 260 of the thin film transistor 200. For example, the first electrode 310 may directly contact the drain electrode 260 of the thin film transistor 200 through the electrode contact hole.

[0056] The light-emitting layer 320 may generate light having a brightness corresponding to the voltage difference between the first electrode 310 and the second electrode 330. For example, the light-emitting layer 320 may include a light-emitting material layer (EML) including a light-emitting material. The light-emitting material may include an organic material, an inorganic material, or a mixed material. For example, the transparent touch display device according to an embodiment of the present disclosure may be an organic light-emitting display device including a light-emitting material layer formed of an organic material. The light-emitting layer 320 may have a multi-layer structure. For example, the light-emitting layer 320 may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL). Therefore, in the transparent touch display device according to an embodiment of the present disclosure, the light-emitting efficiency of the light-emitting device 300 may be improved.

[0057] The second electrode 330 may include a conductive material. The second electrode 330 may include a material different from that of the first electrode 310. The second electrode 330 may have a higher transmittance than the first electrode 310. For example, the second electrode 330 may be a transparent electrode composed of a transparent conductive material such as ITO or IZO. Therefore, in the transparent touch display device according to an embodiment of the present disclosure, light generated by the light-emitting layer 320 may be emitted through the second electrode 330.

[0058] The bank insulation layer 140 may be provided on the lower planarization layer 130. The bank insulation layer 140 may include an insulating material. For example, the bank insulation layer 140 may include an organic insulating material. The bank insulation layer 140 may include a material different from the lower planarization layer 130. The bank insulation layer 140 may define the emission area EA on the device substrate 100. For example, the bank insulation layer 140 may cover the edge of the first electrode 310. The light-emitting layer 320 and the second electrode 330 of the light-emitting device 300 may be stacked on the portion of the first electrode 310 exposed by the bank insulation layer 140. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, the light-emitting devices 300 can be independently controlled.

[0059] The second electrode 330 of the light-emitting device 300 may extend on the bank insulating layer 140. For example, the second electrode 330 of the light-emitting device 300 may be electrically connected to the second electrode 330 of an adjacent light-emitting device 300. For example, the second electrode 330 of the light-emitting device 300 may be formed simultaneously with the second electrode 330 of the adjacent light-emitting device 300. The bank insulating layer 140 may be covered by the second electrode 330.

[0060] The encapsulation element 400 may be provided on the light emitting device 300. The encapsulation element 400 may prevent damage to the light emitting device 300 due to external impact and moisture. The encapsulation element 400 may have a multi-layer 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 insulating materials. The second encapsulation layer 420 may include a material different from 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, while the second encapsulation layer 420 may include an organic insulating material. Therefore, in the transparent 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.

[0061] The device substrate 100 may include a light-emitting area EA and a transmissive area TA. The transmissive area TA may be disposed outside the light-emitting area EA. External light may pass through the transmissive area TA. For example, when an image is not realized by the light-emitting device 300, the transparent touch display device according to the embodiment of the present disclosure may be recognized as transparent glass. The light-emitting device 300 and the driving circuit may be spaced apart from the transmissive area TA of the device substrate 100. For example, the light-emitting device 300 may be disposed on the light-emitting area EA of the device substrate 100. The thin film transistor 200 of the driving circuit may be disposed between the device substrate 100 and the light-emitting device 300. Therefore, in the transparent touch display device, a reduction in transmittance due to the light-emitting device 300 and the driving circuit can be prevented.

[0062] At least one encapsulation dam 106 may be provided on the device substrate 100. The encapsulation dam 106 may block the flow of the second encapsulation layer 420, which has higher fluidity. For example, the second encapsulation layer 420 may be provided on the 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 emission area EA and the transmission area TA of the device substrate 100 may overlap with the encapsulation element 400. For example, the emission area EA and the transmission area TA of the device substrate 100 may be provided in the portion of the device substrate 100 defined by 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 provided on the lower planarization layer 130. For example, the encapsulation dam 106 may include the same material as the bank insulation layer 140. In another example, the encapsulation dam 106 may be disposed on the lower passivation layer 120 and may include the same material as the lower planarization layer 130. However, the present disclosure is not limited thereto, and the encapsulation dam 106 may have a multi-layer structure and thus include both the same material as the lower planarization layer 130 and the same material as the bank insulation layer 140.

[0063] The touch electrodes TE and the wiring 700 may be provided on the package element 400. Each touch electrode TE may detect a touch by a user and / or a tool. For example, the touch electrodes TE may be provided side by side on the package element 400. The touch buffer layer 500 may be provided between the package element 400 and the touch electrodes TE, and between the package element 400 and the wiring 700. The touch buffer layer 500 may prevent the light-emitting device 300 from being damaged due to the formation process of the touch electrodes TE and the wiring 700. The touch buffer layer 500 may include an insulating material. For example, the touch buffer layer 500 may include an inorganic insulating material such as silicon oxide (SiO) and / or silicon nitride (SiN).

[0064] Each touch electrode TE may include a portion disposed on the transmissive area TA of the device substrate 100 . The touch electrode TE may include a material having high transmittance. For example, each touch electrode TE may be a transparent electrode formed from a transparent conductive material such as ITO or IZO, but the present disclosure is not limited thereto. Each touch electrode TE may include a grid-shaped touch pattern 600 extending in a first direction and a second direction different from the first direction. However, the present disclosure is not limited thereto, and the touch electrodes TE may be formed in various shapes other than a grid. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, the reduction in transmittance caused by the touch electrodes TE can be minimized. Furthermore, in the transparent touch display device according to the embodiment of the present disclosure, the parasitic capacitance between the second electrode 330 and the touch electrode TE can be minimized. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, a sufficient area for touch detection can be ensured, and the reliability of touch detection can be improved.

[0065] The wiring 700 can electrically connect each touch electrode TE to the touch detection component TD in the driving components DD, SD, TD, and TC. For example, each wiring 700 can be electrically connected to one touch electrode TE. The wiring 700 may include a conductive material. The wiring 700 may have a higher conductivity than the touch electrode TE. For example, the wiring 700 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The resistance of each wiring 700 may be lower than the resistance of each touch electrode TE. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, the response speed according to touch detection can be improved.

[0066] The wiring 700 may be provided outside the light-emitting area EA and the transmissive area TA. For example, each touch electrode TE may be electrically connected to the corresponding wiring 700 outside the light-emitting area EA and the transmissive area TA. The wiring 700 may extend side by side in a single direction. Therefore, in the transparent touch display device according to an embodiment of the present disclosure, a reduction in light-emitting area and a decrease in transmittance due to the wiring 700 may be prevented.

[0067] The wiring 700 may be provided on a different layer from the touch electrode TE. For example, the touch insulating layer 510 covering the touch pattern 600 of each touch electrode TE may be provided on the touch buffer layer 500, and the wiring 700 may be provided on the touch insulating layer 510. The touch insulating layer 510 may include an insulating material. For example, the contact insulating layer 510 may include an inorganic insulating material such as silicon oxide (SiO) and / or silicon nitride (SiN). The touch insulating layer 510 may include a touch contact hole that partially exposes each touch electrode TE. Each touch electrode TE may be connected to the corresponding wiring 700 through one of the touch contact holes. Each touch electrode TE may be connected to the corresponding wiring 700 outside the emission area EA and the transmission area TA. For example, the touch pattern 600 of each touch electrode TE may have a shape extending from the corresponding wiring 700 to the transmission area TA.

[0068] The black matrix 810 and the color filter 820 may be provided on the wiring 700. The black matrix 810 may be provided on the wiring 700. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, the black matrix 810 can prevent the moire phenomenon caused by the wiring 700. The black matrix 810 may be provided between the emission area EA and the transmission area TA. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, the reduction of the emission area and the reduction of the transmittance due to the black matrix 810 can be prevented.

[0069] The color filter 820 can be arranged side by side with the black matrix 810. For example, one end of the color filter 820 can overlap with the black matrix 810. The color filter 820 can overlap with the light-emitting area EA. The light generated by the light-emitting device 300 can pass through the color filter 820 and be emitted to the outside. The color filter 820 can use the light emitted from the light-emitting device 300 to achieve a specific color. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, an image composed of various colors can be realized.

[0070] The touch passivation layer 520 may be disposed between the wiring 700 and the black matrix 810. The touch passivation layer 520 may prevent damage to the wiring 700 due to the formation process of the black matrix 810 and the color filter 820. For example, the touch passivation layer 520 may extend over the emission area EA and the transmission area TA. The touch passivation layer 520 may include an insulating material. For example, the touch passivation layer 520 may include an inorganic insulating material such as silicon oxide (SiO) and / or silicon nitride (SiN).

[0071] The black matrix 810 and the color filter 820 may be covered by a cover planarization layer 550. The cover planarization layer 550 may remove the thickness difference caused by the black matrix 810 and the color filter 820. The cover planarization layer 550 may include an insulating material. The cover planarization layer 550 may include a transparent material. For example, the cover planarization layer 550 may include an organic insulating material.

[0072] A cover substrate 900 may be disposed on the cover planarization layer 550. The cover substrate 900 may be attached to the cover planarization layer 550 via a cover adhesive layer 901. The cover substrate 900 may mitigate external impacts. The cover substrate 900 may include an insulating material. The cover substrate 900 may include a transparent material. For example, the cover substrate 900 may include glass or plastic. A polarizer 910 may be disposed on the cover substrate 900. Therefore, in a transparent touch display device according to an embodiment of the present disclosure, degradation of image quality due to reflection of external light may be prevented.

[0073] The display panel DP can be electrically connected to the driving components DD, SD, TD, and TC through the pads 104 and 704. For example, at least one display pad 104 electrically connected to the driving circuit and a touch pad 704 respectively connected to the touch electrode TE through the wiring 700 can be provided on a portion of the device substrate 100. The display pad 104 and the touch pad 704 can be provided outside the package dam 106. For example, the display pad 104 and the touch pad 704 can be spaced apart from the package element 400.

[0074] The wiring 700 can extend along the surface of the package component 400 opposite the device substrate 100, so that each wiring 700 can be connected to a corresponding touch pad 704. For example, the touch buffer layer 500, the touch insulation layer 510, the wiring 700, and the touch passivation layer 520 can extend outside the package dam 106, and the touch passivation layer 520 can expose a portion of each wiring 700. That is, in the transparent touch display device according to the embodiment of the present disclosure, the touch pad 704 can be made of the same material as the wiring 700. Therefore, in the transparent touch display device according to the embodiment of the present disclosure, process efficiency can be improved.

[0075] Therefore, a transparent touch display device according to an embodiment of the present disclosure may include a light-emitting device 300 disposed on the light-emitting area EA of a device substrate 100, touch electrodes TE disposed side by side on the transmissive area TA of the device substrate 100, and wirings 700 disposed outside the light-emitting area EA and the transmissive area TA of the device substrate 100. Each wiring 700 may be connected to one of the touch electrodes TE outside the light-emitting area EA and the transmissive area TA, and the touch electrodes TE may have a higher transmittance than the wirings 700. Therefore, in the transparent touch display device according to an embodiment of the present disclosure, a decrease in transmittance can be minimized, and sufficient space can be ensured between the wirings 700. Furthermore, in the transparent touch display device according to an embodiment of the present disclosure, the touch electrodes TE having relatively high transmittance can be located on the transmissive area TA of the device substrate 100, thereby ensuring a sufficient area for detecting a touch by a user and / or a tool. Therefore, in the transparent touch display device according to an embodiment of the present disclosure, the reliability of touch detection can be improved.

[0076] The transparent touch display device according to an embodiment of the present disclosure is described so that the touch of the user and / or tool is detected by the touch electrode TE on the transmissive area TA of the device substrate 100. However, in a transparent touch display device according to another embodiment of the present disclosure, the touch of the user and / or tool may be detected between the emission area EA and the transmissive area TA of the device substrate 100. For example, in a transparent touch display device according to another embodiment of the present disclosure, a touch line 750 may be provided that overlaps with one of the wirings 700, such as Figure 5 As shown. The touch line 750 may extend between the emission area EA and the transmission area TA. For example, the touch line 750 may extend parallel to the wiring 700. The touch line 750 may include a conductive material. The touch line 750 may include a material different from the touch pattern 600 of each touch electrode. The touch line 750 may have a lower resistance than the touch pattern 600 of each touch electrode. For example, the touch line 750 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), chromium (Cr), molybdenum (Mo), and tungsten (W). The touch line 750 may be connected to one of the wirings 700. Therefore, in a transparent touch display device according to another embodiment of the present disclosure, the accuracy of detecting the touch of a user and / or tool can be further improved.

[0077] The transparent touch display device according to an embodiment of the present disclosure is described such that the wiring 700 is provided on the touch insulating layer 510 covering the touch electrode TE. However, in a transparent touch display device according to another embodiment of the present disclosure, the touch pattern 600 of each touch electrode may be provided on the same layer as the wiring 700, such as Figure 5As shown. For example, the touch pattern 600 and the wiring 700 of each touch electrode can be provided on the touch insulation layer 510. Each wiring 700 can have a stacked structure of a first conductive layer 710 and a second conductive layer 720. The second conductive layer 720 can have a lower resistance than the first conductive layer 710. The first conductive layer 710 can have a higher transmittance than the second conductive layer 720. For example, the first conductive layer 710 can include the same material as the touch pattern 600 of each touch electrode. Therefore, in the transparent touch display device according to another embodiment of the present disclosure, the resistance of the wiring 700 can be reduced. The touch pattern 600 of each touch electrode can be connected to the first conductive layer 710 of the corresponding wiring 700. Therefore, in the transparent touch display device according to another embodiment of the present disclosure, the process of connecting the touch pattern 600 of each touch electrode to one of the wirings 700 can be simplified.

[0078] The transparent touch display device according to an embodiment of the present disclosure is described such that the touch electrode TE is provided between the touch buffer layer 500 and the touch insulating layer 510. However, in a transparent touch display device according to another embodiment of the present disclosure, the wiring 700 may be provided between the touch buffer layer 500 and the touch insulating layer 510, and the touch pattern 600 of each touch electrode may be provided on the touch insulating layer 510, as shown in FIG. Figure 6 Therefore, in the transparent touch display device according to another embodiment of the present disclosure, the degree of freedom of the relative position between the touch pattern 600 and the wiring 700 of each touch electrode can be improved.

[0079] The transparent touch display device according to an embodiment of the present disclosure is described such that the wiring 700, the touch electrodes TE, the black matrix 810, and the color filter 820 are provided on the package element 400. However, in a transparent touch display device according to another embodiment of the present disclosure, the black matrix 810, the color filter 820, the wiring 700, and the touch pattern 600 of each touch electrode may be provided on the lower surface of the cover substrate 900 facing the device substrate 100, as shown in FIG. Figure 7 and Figure 8As shown. The black matrix 810 and the color filter 820 may be in direct contact with the cover substrate 900. The wiring 700 and the touch pattern 600 of each touch electrode may be disposed on the cover planarization layer 550 covering the black matrix 810 and the color filter 820. For example, the touch pattern 600 of each touch electrode may be in contact with the cover planarization layer 550. The light-emitting device 300 on the light-emitting area EA of the device substrate 100 may be covered by the upper passivation layer 150. The wiring 700, insulated from the touch pattern 600 of each touch electrode by the touch insulation layer 560, may be covered by the cover passivation layer 570. The adhesive layer 450 may be disposed between the upper passivation layer 150 and the cover passivation layer 570. For example, an adhesive dam 107 may be disposed between the encapsulation dam 106 and the cover planarization layer 550. The adhesive layer 450 may be disposed in the area defined by the adhesive dam 107. The cover passivation layer 570, the wiring 700, and the contact insulation layer 560 may extend beyond the adhesive dam 107. The cover passivation layer 570 may expose a portion of each wiring 700 to form a touch pad 704. For example, the touch pad 704 may be provided outside the adhesive dam 107. That is, in the transparent touch display device according to another embodiment of the present disclosure, the touch pad 704 may be provided on the lower surface of the cover substrate 900. Therefore, in the transparent touch display device according to another embodiment of the present disclosure, damage to the light-emitting device 300 caused by the formation process of the black matrix 810, the color filter 820, the wiring 700, and the touch pattern 600 of each touch electrode can be prevented. Therefore, in the transparent touch display device according to another embodiment of the present disclosure, process efficiency can be improved.

[0080] As a result, a transparent touch display device according to an embodiment of the present disclosure may include a light-emitting device on a light-emitting region of a device substrate, a touch electrode on a transmissive region of the device substrate, and wiring disposed outside the light-emitting region and the transmissive region, wherein the wiring may be connected to the touch electrodes, respectively, and wherein the touch electrodes may have a higher transmittance than the wiring. Therefore, in a transparent touch display device according to an embodiment of the present disclosure, a decrease in transmittance can be minimized, and the wiring can be sufficiently spaced apart. Therefore, distortion of touch signals due to wiring density can be reduced or prevented. Thus, in a transparent touch display device according to an embodiment of the present disclosure, the reliability of touch detection can be improved.

[0081] CROSS-REFERENCE TO RELATED APPLICATIONS

[0082] This application claims priority to Korean Patent Application No. 10-2020-0189743, filed on December 31, 2020, which is hereby incorporated by reference as if fully set forth herein.

Claims

1. A transparent touch display device, comprising: A device substrate, the device substrate comprising a light-emitting region and a transmissive region; a light-emitting device, the light-emitting device being on the light-emitting region of the device substrate; a packaging component, the packaging component being on the device substrate and covering the light-emitting device; wiring, the wiring being on the packaging element and being arranged outside the light emitting area and the transmission area; a touch electrode connected to the wiring on the package element, the touch electrode including a mesh-shaped touch pattern extending in a first direction and a second direction different from the first direction on the transmissive area; a touch line extending between the light-emitting area and the transmission area on the packaging component; a touch passivation layer, the touch passivation layer being on the touch electrodes and the touch lines; a black matrix, the black matrix being on the touch passivation layer and overlapping the touch line; as well as a color filter, the color filter being on the touch passivation layer, the touch line being disposed adjacent to one side of the color filter, The transmission region does not overlap with the first electrode of each light emitting device.

2. The transparent touch display device according to claim 1, further comprising: a touch insulating layer, the touch insulating layer being between the touch electrode and the wiring, The touch electrodes are electrically connected to the wirings through touch contact holes in the touch insulating layer.

3. The transparent touch display device according to claim 1, wherein: The color filter overlaps the light emitting area, Wherein, the black matrix and the color filter are arranged side by side, Wherein, the black matrix covers the wiring, and The black matrix is arranged outside the light emitting area and the transmission area.

4. The transparent touch display device according to claim 1, wherein: The touch electrode includes one of ITO and IZO.

5. The transparent touch display device according to claim 1 , further comprising a touch pad on the device substrate, wherein the touch pad is spaced apart from the packaging component. in, The touch pad includes the same material as the wiring.

6. The transparent touch display device according to claim 1, wherein: The wiring includes a first conductive layer and a second conductive layer sequentially stacked on the package element, and The transmittance of the first conductive layer is higher than the transmittance of the second conductive layer.

7. The transparent touch display device according to claim 6, wherein: The touch line is connected to the wiring, overlaps with the wiring, and extends parallel to the wiring.

8. The transparent touch display device according to claim 6, wherein: The second conductive layer has higher electrical conductivity than the first conductive layer.

9. The transparent touch display device according to claim 6, wherein: The touch electrode includes the same material as the first conductive layer.

10. The transparent touch display device according to claim 9, wherein: The touch electrodes and the wirings are provided on the same layer.

11. A transparent touch display device, comprising: A device substrate, the device substrate comprising a light-emitting region and a transmissive region; a light-emitting device, the light-emitting device being on the light-emitting region of the device substrate; a packaging component, the packaging component being on the light-emitting device and overlapping the light-emitting area and the transmission area; touch electrodes on the package element, each of the touch electrodes including a grid-shaped touch pattern on the transmission area of the device substrate, the touch pattern extending in a first direction and a second direction different from the first direction; Wirings, the wirings being connected to the touch electrodes respectively, and the wirings being arranged outside the light-emitting area and the transmissive area; a touch line extending between the light-emitting area and the transmission area on the packaging component; a touch passivation layer, the touch passivation layer being on the touch electrodes and the touch lines; a black matrix, the black matrix being on the touch passivation layer and overlapping the touch line; as well as a color filter, the color filter being on the touch passivation layer, the touch line being disposed adjacent to one side of the color filter, Wherein, each of the touch electrodes is made of a transparent conductive material. The transmission region does not overlap with the first electrode of each light emitting device.

12. The transparent touch display device according to claim 11, wherein: The wiring has lower resistance than the touch electrode.

13. The transparent touch display device according to claim 11, wherein: The wiring includes metal.

14. The transparent touch display device according to claim 11, wherein: The second direction is perpendicular to the first direction.

15. The transparent touch display device according to claim 11, wherein: Each of the touch electrodes is connected to one of the wirings outside the light emitting area and the transmissive area.

16. The transparent touch display device according to claim 11, further comprising a touch insulating layer covering the wiring. in, The touch electrodes are provided on the touch insulation layer.

17. The transparent touch display device according to claim 16, further comprising: a cover substrate, the cover substrate being on the light-emitting device, the touch electrode and the wiring; as well as a covering planarization layer on a lower surface of the cover substrate facing the device substrate, wherein the color filter overlaps the light emitting device on the lower surface of the cover substrate, wherein the black matrix is arranged side by side with the color filter and overlaps with the wiring, and The covering planarization layer covers the color filter and the black matrix.

18. The transparent touch display device according to claim 17, further comprising: an upper passivation layer covering the light-emitting device; a cover passivation layer on the upper passivation layer; as well as an adhesive layer between the upper passivation layer and the cover passivation layer, The wiring and the touch electrode are arranged between the cover passivation layer and the cover planarization layer.

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