Transparent touch display device

Abstract

The present application relates to a kind of transparent touch display devices, comprising: substrate, including pixel area, first transmission area located on the first side of pixel area and second transmission area located on the second side of pixel area;Driving transistor is arranged in pixel area;Anode is arranged in pixel area, above driving transistor and electrically connected to the source or drain of driving transistor;Emission layer is located on anode;Display cathode is located on emission layer;First touch cathode is arranged in first transmission area and is located on the first side of display cathode;Second touch cathode is arranged in second transmission area and is located on the second side of display cathode;First touch line is electrically connected to at least one of first touch cathode and second touch cathode;And first upper touch shield part is arranged above first touch line and at least partially overlaps with first touch line.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2021-0194259, filed on December 31, 2021, which is incorporated herein by reference in its entirety. Technical Field

[0003] This invention relates to electronic devices, and more particularly, to transparent display devices. Background Technology

[0004] In today's society, display devices are widely used and increasingly important for presenting visual information to users. With advancements in display device technology and the growing necessity of providing a user-friendly environment, various functions are integrated into display devices, and many modern display devices tend to adopt touch-enabled input interfaces that can receive touch-based input. Compared to traditional input devices such as buttons, keyboards, and mice, touch-enabled display devices allow users to input information or commands more intuitively and conveniently.

[0005] To provide this touch-based input functionality, a touch display device needs to include a touch sensor structure and touch circuitry for sensing touches. The touch sensor structure of a touch display device typically includes multiple touch electrodes and multiple touch lines for electrically connecting the touch electrodes to the touch circuitry. The touch sensing circuitry needs to perform the expected operations correctly based on the touch sensor structure.

[0006] Currently, efforts are ongoing to reduce the thickness of touch display devices and improve image quality, with ongoing development of touch display devices incorporating touch sensors, which include multiple touch electrodes integrated into the display panel. Furthermore, there is a growing demand for transparent touch display devices, which include a display panel containing self-emissive light-emitting elements such as organic light-emitting diode (OLED) displays and allow light to pass through the front and back of the display panel. Summary of the Invention

[0007] In the field of touch and display technology, although touch display devices, including display panels with integrated touch sensors, have been developed to reduce the thickness of touch display devices and improve image quality, these touch display devices with integrated touch sensors possess both the capabilities of self-emissive display devices (where self-emissive light-emitting elements such as OLEDs are disposed in the display panel) and transparent touch display devices (where light can pass through both the front and back), making the display panel satisfy both self-emissiveness and transmittance presents a considerable challenge in the design and manufacture of touch display devices with integrated touch sensors. To solve this problem, the inventors of this invention have invented a transparent touch display device comprising a display panel with integrated touch sensors that has excellent self-emissive performance and high transmittance, enabling precise touch sensing.

[0008] Embodiments of the present invention provide a transparent touch display device, which includes a display panel with an integrated touch sensor that has excellent self-illumination performance, high transmittance, and is capable of accurate touch sensing.

[0009] Embodiments of the present invention provide a transparent touch display device, wherein the touch sensor is configured to have two or more cathodes separated from each other in a cathode electrode layer.

[0010] An embodiment of the present invention provides a transparent touch display device, wherein a touch sensor is integrated into the display panel without affecting the transmittance of the display panel.

[0011] Embodiments of the present invention provide a transparent touch display device that can reduce the complexity of the panel manufacturing process and reduce the thickness of the display panel.

[0012] Embodiments of the present invention provide a transparent touch display device having a touch shielding structure capable of reducing or eliminating coupling noise generated between one or more touch lines and one or more adjacent display driving related patterns.

[0013] According to various aspects of the present invention, a transparent touch display device is provided, comprising: a substrate including a pixel region, a first transmissive region located on a first side of the pixel region, and a second transmissive region located on a second side of the pixel region; a driving transistor disposed in the pixel region; an anode disposed in the pixel region, above the driving transistor, and electrically connected to the source or drain of the driving transistor; a light-emitting layer disposed on the anode; a display cathode disposed on the light-emitting layer; a first touch cathode disposed in the first transmissive region and on a first side of the display cathode; a second touch cathode disposed in the second transmissive region and on a second side of the display cathode; a first touch line electrically connected to at least one of the first touch cathode and the second touch cathode; and a first upper touch shield disposed above the first touch line and overlapping at least a portion of the first touch line.

[0014] In some embodiments, the first upper touch shield of the transparent touch display device may be disposed in a metal layer between a source-drain metal layer in which the source or drain of the driving transistor is disposed and a pixel electrode layer in which the anode is disposed.

[0015] In some embodiments, the first touch line and the first upper touch shield included in the transparent touch display device may overlap with the first touch cathode.

[0016] For example, the transparent touch display device may include multiple touch lines overlapping the first touch cathode, and the multiple touch lines may include the first touch line. The first upper touch shield may overlap with all the multiple touch lines. The line width of the first upper touch shield may be greater than the width of the area in which the multiple touch lines are disposed.

[0017] In some embodiments, the first touch line and the first upper touch shield included in the transparent touch display device may overlap with the display cathode.

[0018] For example, the first touch line and the first upper touch shield can be disposed between the driving voltage line and the base voltage line. The driving voltage line can be disposed in the pixel region and overlap with the display cathode. The base voltage line can be disposed in the pixel region, overlap with the display cathode, and be electrically connected to the display cathode.

[0019] In some embodiments, where the first touch line and the first upper touch shield overlap with the display cathode, the transparent touch display device may further include a second touch line overlapping with the display cathode, a display line disposed between the first touch line and the second touch line and located in a different layer from the first touch line and the second touch line, and a second upper touch shield disposed above the second touch line and overlapping with the second touch line.

[0020] In some embodiments, where the first touch line and the first upper touch shield overlap with the display cathode, the first touch line and the first upper touch shield may be disposed between the base voltage line and a first side or edge of the display cathode, or between the driving voltage line and a second side or edge of the display cathode. For example, the driving voltage line may be disposed in the pixel region and overlap with the display cathode. The base voltage line may be disposed in the pixel region, overlap with the display cathode, and be electrically connected to the display cathode.

[0021] In some embodiments, the transparent touch display device may further include a second upper touch shield, different from the first upper touch shield, and may include multiple touch lines overlapping the display cathode. The multiple touch lines overlapping the display cathode may be classified into a first group and a second group. All two or more touch lines classified into the first group may overlap with the first upper touch shield, and all two or more touch lines classified into the second group may overlap with the second upper touch shield.

[0022] The line width of the first upper touch shield may be greater than the width of the area in which two or more touch lines classified into the first group are provided, and the line width of the second upper touch shield may be greater than the width of the area in which two or more touch lines classified into the second group are provided.

[0023] In some embodiments, the transparent touch display device may further include a side touch shield disposed adjacent to the first touch line, the side touch shield comprising the same material as the first touch line.

[0024] In some embodiments, the side touch shield may be configured to be adjacent to the second side or edge that is closer to the anode than the first side or edge, in the first side or edge of the first touch line and the second side or edge opposite to the first side or edge.

[0025] According to various aspects of the present invention, a transparent touch display device is provided, comprising: a substrate including a pixel region, a first transmissive region located on a first side of the pixel region, and a second transmissive region located on a second side of the pixel region; a display cathode to which a base voltage for display driving is applied; a first touch cathode located on the first side of the display cathode and comprising the same material as the display cathode; a second touch cathode located on a second side of the display cathode and comprising the same material as the display cathode; a first touch bridge spanning the pixel region and electrically connecting the first touch cathode and the second touch cathode; a first touch line intersecting the first touch bridge and electrically connected to at least one of the first touch cathode and the second touch cathode; and a first upper touch shield disposed above the first touch line and overlapping at least a portion of the first touch line.

[0026] According to some embodiments of the present invention, a transparent touch display device may be provided, comprising a display panel with an integrated touch sensor that has excellent self-illumination performance and high transmittance while enabling accurate touch sensing.

[0027] According to an embodiment of the present invention, a transparent touch display device may be provided, wherein the touch sensor is configured to have two or more cathodes separated from each other in a cathode electrode layer.

[0028] According to an embodiment of the present invention, a transparent touch display device can be provided, wherein a touch sensor is integrated into the display panel without affecting the transmittance of the display panel.

[0029] According to some embodiments of the present invention, a transparent touch display device can be provided, which can reduce the complexity of the panel manufacturing process and reduce the thickness of the display panel.

[0030] According to embodiments of the present invention, a transparent touch display device is provided, which, by having a touch shielding structure capable of reducing or eliminating coupling noise generated between one or more touch lines and one or more adjacent display driver-related patterns, can reduce or eliminate the influence between the display driver and the touch driver, thereby achieving accurate touch sensing and producing high image quality. Attached Figure Description

[0031] The accompanying drawings, which provide a further understanding of the invention and are incorporated in and form a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:

[0032] Figure 1The system configuration of a transparent touch display device according to various aspects of the present invention is illustrated;

[0033] Figure 2 An example structure of a display panel of a transparent touch display device according to various aspects of the present invention is illustrated;

[0034] Figure 3 An example touch sensor structure of a transparent touch display device according to various aspects of the present invention is illustrated;

[0035] Figure 4 This is a plan view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0036] Figure 5 An example cathode segmentation structure of a display panel of a transparent touch display device according to various aspects of the present invention is illustrated;

[0037] Figure 6A , 6B Figure 6C illustrates a touch sensor structure based on a cathode segmentation structure of a display panel of a transparent touch display device according to various aspects of the present invention;

[0038] Figure 7 and 8 Other example cathode segmentation structures of the display panel of a transparent touch display device according to various aspects of the present invention are illustrated;

[0039] Figure 9 The illustration shows a pixel region and a transmissive region in a portion of a display panel of a transparent touch display device according to various aspects of the present invention;

[0040] Figure 10 The diagram illustrates a display cathode and a touch cathode disposed in each of a pixel region and a transmissive region in a portion of a display panel of a transparent touch display device according to various aspects of the present invention;

[0041] Figure 11 This is a plan view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0042] Figure 12 A cross-sectional view of the cathode dividing boundary region in the display panel of a transparent touch display device according to various aspects of the present invention is illustrated.

[0043] Figure 13 A cross-sectional view of a touch line region in a display panel of a transparent touch display device according to various aspects of the present invention is illustrated.

[0044] Figure 14 The diagram illustrates signals applied to a touch cathode and a touch line in the display panel of a transparent touch display device according to various aspects of the present invention.

[0045] Figure 15 This is a cross-sectional view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0046] Figure 16 and 17 This is a plan view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0047] Figure 18 This is a plan view of the display panel in the case where the touch shielding structure is applied to the display panel of a transparent touch display device according to various aspects of the present invention;

[0048] Figure 19 yes Figure 18 A cross-sectional view of the touch line area in the image;

[0049] Figure 20 yes Figure 18 A cross-sectional view of the display panel in the image;

[0050] Figure 21 This is a plan view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0051] Figure 22 This is a cross-sectional view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0052] Figure 23 This is another cross-sectional view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0053] Figure 24 and 25 This is a plan view of the display panel of a transparent touch display device according to various aspects of the present invention;

[0054] Figure 26 In the application of touch shielding structure Figure 21 In the case of a display panel, a floor plan of the display panel;

[0055] Figure 27 yes Figure 26 A cross-sectional view of the column line area of ​​the display panel;

[0056] Figure 28 yes Figure 26 A cross-sectional view of the display panel;

[0057] Figure 29 This is another plan view of the display panel of the transparent touch display device according to various aspects of the present invention;

[0058] Figure 30This is yet another plan view of the display panel of the transparent touch display device according to various aspects of the present invention;

[0059] Figure 31 In-mold shielding structure applied Figure 29 In the case of a display panel, a floor plan of the display panel;

[0060] Figure 32 yes Figure 31 A cross-sectional view of the column line area of ​​the display panel;

[0061] Figure 33 yes Figure 31 A cross-sectional view of the display panel. Detailed Implementation

[0062] In the following description of examples or embodiments of the invention, reference will be made to the accompanying drawings, which illustrate specific examples or embodiments that can be implemented by way of example. The same reference numerals and symbols may be used in the drawings to refer to the same or similar components, even if they are shown in different drawings. Furthermore, in the following description of examples or embodiments of the invention, detailed descriptions of well-known functions and components involved herein will be omitted when it is determined that such detailed descriptions would obscure the subject matter of some embodiments of the invention. Terms such as “comprising,” “having,” “including,” and “constituting” as used herein are generally intended to allow for the addition of other components, unless these terms are used in conjunction with the term “only.”

[0063] In this document, terms such as “first,” “second,” “A,” “B,” “(A),” or “(B)” may be used to describe elements of the invention. Each of these terms is not used to define the nature, order, sequence, or number of elements, but is only used to distinguish the corresponding element from other elements.

[0064] When referring to the first element and the second element as "connected or combined" or "overlapping," it should be interpreted as meaning that the first element can not only be "directly connected or combined" or "directly contact or overlap" with the second element, but also that a third element can be "inserted" between the first and second elements, or that the first and second elements can be "connected or combined" or "overlapping" with each other via a fourth element. Here, the second element may be included in at least one of two or more elements that are "connected or combined," "in contact," or "overlapping" with each other.

[0065] When using time-relative terms such as “after,” “following,” “next,” “before,” etc., to describe the process or operation of an element or structure, or the flow or steps in an operating method, processing method, or manufacturing method, these terms may be used to describe discontinuous or non-sequential processes or operations, unless the terms “directly” or “immediately following” are used together.

[0066] Furthermore, when referring to any scale, relative size, etc., even without a specific description, it should be assumed that the numerical values ​​(e.g., levels, ranges, etc.) of the component or feature or related information include the range of tolerances or errors that can be caused by various factors (e.g., process factors, internal or external shocks, noise, etc.). In addition, the term "may" fully encompasses all the meanings of the term "can".

[0067] In the following, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0068] Figure 1 The system configuration of a transparent touch display device 100 according to various aspects of the present invention is illustrated.

[0069] Reference Figure 1 The transparent touch display device 100 includes a display panel 110 as an element for displaying images and a display driving circuit.

[0070] The display driving circuit is a circuit used to drive the display panel 110, and may include a data driving circuit 120, a gate driving circuit 130, a display controller 140, etc.

[0071] The display panel 110 may include a display area DA in which an image is displayed and a non-display area NDA in which no image is displayed. The non-display area NDA may be an area outside the display area DA, and may also be referred to as an edge area or border area.

[0072] The display panel 110 may include a plurality of sub-pixels SP. The display panel 110 may further include various signal lines for driving the plurality of sub-pixels SP.

[0073] Such signal lines may include multiple data lines for transmitting data signals (also known as data voltages or image signals) and multiple gate lines for transmitting gate signals (also known as scan signals). The data lines and gate lines may intersect each other. Each of the data lines may be configured to extend along a first direction. Each of the gate lines may be configured to extend along a second direction different from the first direction. For example, the first direction may be a column direction or a vertical direction, and the second direction may be a row direction or a horizontal direction. In another example, the first direction may be a row direction, and the second direction may be a column direction.

[0074] In some embodiments, the transparent touch display device 100 may be a liquid crystal display device or a self-emissive display device with a display panel 110 having self-emissive capabilities. In some embodiments, when the transparent touch display device is a self-emissive display device, each of the plurality of sub-pixels SP may include a light-emitting element.

[0075] In one embodiment, the transparent touch display device 100 may be an organic light-emitting display device in which an organic light-emitting diode (OLED) is used as the light-emitting element. In another embodiment, the transparent touch display device 100 may be an inorganic light-emitting display device in which an inorganic light-emitting diode based on an inorganic material is used as the light-emitting element. In yet another embodiment, the transparent touch display device 100 may be a quantum dot display device in which a quantum dot, as a self-emissive semiconductor crystal, is used as the light-emitting element.

[0076] The structure of each of the plurality of sub-pixels SP can vary depending on the type of transparent touch display device 100. For example, in the case where the transparent touch display device 100 is a self-emissive display device in which each sub-pixel SP has the ability to emit light, each sub-pixel SP may include a self-emissive light-emitting element, one or more transistors, and one or more capacitors.

[0077] The data driving circuit 120 is a circuit for driving multiple data lines and outputting data signals to the multiple data lines. The gate driving circuit 130 is a circuit for driving multiple gate lines and outputting gate signals to the multiple gate lines. The display controller 140 is a device for controlling the data driving circuit 120 and the gate driving circuit 130, and can control the driving timing of the multiple data lines and the driving timing of the multiple gate lines.

[0078] The display controller 140 may provide at least one data drive control signal to the data drive circuit 120 to control the data drive circuit 120, and may provide at least one gate drive control signal to the gate drive circuit 130 to control the gate drive circuit 130.

[0079] The data driving circuit 120 can provide data signals to multiple data lines according to the driving timing control of the display controller 140. The data driving circuit 120 can receive digital image data from the display controller 140, convert the received image data into analog data signals, and output the obtained analog data signals to multiple data lines.

[0080] The gate drive circuit 130 can provide gate signals to multiple gate lines according to the drive timing control of the display controller 140. The gate drive circuit 130 can receive a first gate voltage corresponding to the on-level voltage and a second gate voltage corresponding to the off-level voltage, as well as various gate drive control signals (e.g., start signal, reset signal, etc.), generate gate signals, and provide the generated gate signals to multiple gate lines.

[0081] In some implementations, the data drive circuit 120 may be connected to the display panel 110 according to the tape automatic bonding (TAB) type, or to the conductive pads of the display panel 110, such as bonding pads, according to the chip on glass (COG) type or chip on panel (COP) type, or to the display panel 110 according to the chip on film (COF) type.

[0082] In some embodiments, the gate drive circuit 130 may be connected to the display panel 110 according to the tape-on-board (TAB) type, or to the conductive pads of the display panel 110, such as bonding pads, according to the chip-on-glass (COG) or chip-on-panel (COP) type, or to the display panel 110 according to the chip-on-film (COF) type. In another embodiment, the gate drive circuit 130 may be disposed in the non-display area NDA of the display panel 110 according to the gate-in-panel (GIP) type. The gate drive circuit 130 may be disposed on or above the substrate, or may be connected to the substrate. For example, in the case of the gate-in-panel (GIP) type, the gate drive circuit 130 may be disposed in the non-display area NDA of the substrate. The gate drive circuit 130 may be connected to the substrate in the cases of chip-on-glass (COG), chip-on-film (COF), etc.

[0083] At least one of the data driving circuit 120 and the gate driving circuit 130 may be disposed in the display area DA of the display panel 110. For example, at least one of the data driving circuit 120 and the gate driving circuit 130 may be configured not to overlap with the sub-pixel SP or to overlap with one or more, or all of the sub-pixels SP.

[0084] The data driving circuit 120 may be located on only one side or a portion (e.g., the top edge or the bottom edge) of the display panel 110, but is not limited thereto. In some embodiments, depending on the driving mechanism, panel design mechanism, etc., the data driving circuit 120 may be located on both sides or portions (e.g., the top edge and the bottom edge) of the display panel 110, or on at least two sides or portions (e.g., the top edge, the bottom edge, the left edge, and the right edge) of the four sides or portions of the display panel 110, but is not limited thereto.

[0085] The gate driving circuit 130 may be located on only one side or a portion (e.g., the upper edge or the lower edge) of the display panel 110, but is not limited thereto. In some embodiments, depending on the driving mechanism, panel design mechanism, etc., the gate driving circuit 130 may be located on both sides or portions (e.g., the upper edge and the lower edge) of the display panel 110, or on at least two sides or portions (e.g., the upper edge, the lower edge, the left edge, and the right edge) of the four sides or portions of the display panel 110, but is not limited thereto.

[0086] The display controller 140 can be implemented as a separate component from the data drive circuit 120, or the display controller 140 and the data drive circuit 120 can be integrated, thereby being implemented as a single integrated circuit.

[0087] The display controller 140 may be a timing controller used in general display technology, or a controller or control device capable of performing additional control functions beyond those of a general timing controller. In some embodiments, the timing controller 140 may be a controller or control device different from a timing controller, or may be a circuit or component included in a controller or control device. The display controller 140 may be implemented as various circuits or electronic components, such as integrated circuits (ICs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), processors, etc.

[0088] The display controller 140 can be mounted on a printed circuit board, flexible printed circuit, etc., and can be electrically connected to the data drive circuit 120 and the gate drive circuit 130 through the printed circuit board, flexible printed circuit, etc.

[0089] The display controller 140 can send / receive signals to / from the data drive circuit 120 via one or more predetermined interfaces. In some embodiments, such interfaces may include low-voltage differential signaling (LVDS) interfaces, EPI interfaces, and serial peripheral interfaces (SPs), etc.

[0090] In some embodiments, in addition to the image display function, to further provide touch sensing function, the transparent touch display device 100 may include a touch sensor and a touch sensing circuit 150. The touch sensing circuit 150 can detect whether a touch event of a touch object such as a finger or pen has occurred by sensing the touch sensor, or detect the corresponding touch position.

[0091] The touch sensing circuit 150 may include: a touch driving circuit 160, which is capable of generating and providing touch sensing data by driving and sensing a touch sensor; a touch controller 170, which is capable of using the touch sensing data to detect whether a touch event has occurred or to detect the touch position; and so on.

[0092] The touch sensor may include multiple touch electrodes. The touch sensor may further include multiple touch lines for electrically connecting the multiple touch electrodes to the touch driving circuitry 160. The touch sensor is sometimes also referred to as a touch panel.

[0093] In some embodiments, the touch sensor included in the transparent touch display device 100 may be located inside the display panel 110. In this case, the touch sensor is sometimes referred to as an integrated touch sensor or an in-cell touch sensor. During the manufacturing process of the display panel 110, the integrated touch sensor may be formed together with electrodes or signal lines related to display driving.

[0094] The touch driving circuit 160 can provide a touch driving signal to at least one of a plurality of touch electrodes included in the touch sensor, and generate touch sensing data by sensing at least one of the plurality of touch electrodes.

[0095] The touch sensing circuit 150 can perform touch sensing using a self-capacitance sensing method or a mutual capacitance sensing method.

[0096] When the touch sensing circuit 150 performs touch sensing using a self-capacitance sensing method, it can perform touch sensing based on the capacitance between each touch electrode and the touch object (e.g., a finger, a pen, etc.). According to the self-capacitance sensing method, each of the plurality of touch electrodes can be used both as a driving touch electrode and as a sensing touch electrode. The touch driving circuit 160 can drive all or one or some of the plurality of touch electrodes and sense all or one or some of the plurality of touch electrodes.

[0097] When the touch sensing circuit 150 performs touch sensing using a mutual capacitance sensing method, it can perform touch sensing based on the capacitance between the touch electrodes. According to the mutual capacitance sensing method, the multiple touch electrodes are divided into driving touch electrodes and sensing touch electrodes. The touch driving circuit 160 can drive the driving touch electrodes and sense the sensing touch electrodes.

[0098] As described above, the touch sensing circuit 150 can perform touch sensing using a self-capacitance sensing method and / or a mutual capacitance sensing method. However, for ease of description, it is assumed that the touch sensing circuit 150 performs touch sensing using a self-capacitance sensing method.

[0099] In one embodiment, each of the touch driver circuit 160 and the touch controller 170 may be implemented as a separate integrated circuit. In another embodiment, the touch driver circuit 160 and the touch controller 170 may be integrated into a single integrated circuit.

[0100] In one embodiment, each of the touch driving circuit 160 and the data driving circuit 120 may be implemented as a separate integrated circuit. In another embodiment, the touch driving circuit 160 and the data driving circuit 120 may be integrated into a single integrated circuit. In one embodiment, where the transparent touch display device 100 includes a single driving integrated circuit chip, this driving integrated circuit chip may include both the touch driving circuit 160 and the data driving circuit 120. In another embodiment, where the transparent touch display device 100 includes multiple driving integrated circuit chips, each of these driving integrated circuit chips may include a portion of the touch driving circuit 160 and a portion of the data driving circuit 120.

[0101] The transparent touch display device 100 may further include a power supply circuit for providing various types of power to the display driving circuit and / or touch sensing circuit.

[0102] In some embodiments, the transparent touch display device 100 described herein may be a mobile terminal such as a smartphone or tablet; or a monitor, television (TV), etc. These devices may be of various types, sizes, and shapes. The transparent touch display device 100 according to embodiments of the present invention is not limited thereto, and includes displays of various types, sizes, and shapes for displaying information or images.

[0103] Figure 2 An example structure of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention is illustrated.

[0104] Reference Figure 2 Each sub-pixel SP disposed in the display area DA of the display panel 110 of the transparent touch display device 100 may include a light-emitting element ED, a driving transistor DRT for driving the light-emitting element ED, a scanning transistor SCT for transmitting a data voltage Vdata to the first node N1 of the driving transistor DRT, a storage capacitor Cst for maintaining the voltage at an approximately constant level during a frame, etc.

[0105] A driving transistor DRT may include: a first node N1 to which a data voltage is applied, a second node N2 electrically connected to a light-emitting element ED, and a third node N3 to which a driving voltage EVDD is applied via a driving voltage line DVL. In the driving transistor DRT, the first node N1 may be a gate node, the second node N2 may be a source node or a drain node, and the third node N3 may be a drain node or a source node. Hereinafter, for ease of description, the first node N1 of the driving transistor DRT is also referred to as the gate node or gate, the second node N2 of the driving transistor DRT is also referred to as the source node or source, and the third node N3 of the driving transistor DRT is also referred to as the drain node or drain.

[0106] The light-emitting element (ED) may include an anode (AE), a light-emitting layer (EL), and a cathode (CE). The anode (AE) of the ED may be electrically connected to the second node N2 of the driving transistor (DRT) of each sub-pixel (SP). The cathode (CE) of the ED may be electrically connected to the base voltage line BVL to which the base voltage (EVSS) is applied.

[0107] The anode AE ​​can be a pixel electrode located in each sub-pixel SP. The cathode CE can be a common electrode to which a base voltage EVSS (a common voltage required to drive the sub-pixels SP) is applied.

[0108] For example, the light-emitting element ED can be an organic light-emitting diode (OLED), an inorganic light-emitting diode, a quantum dot light-emitting element, etc. When an organic light-emitting diode (OLED) is used as the light-emitting element ED, its light-emitting layer EL can include an organic light-emitting layer containing organic materials.

[0109] The scan transistor SCT can be turned on / off by the scan signal SCAN (i.e., the gate signal) applied via the scan signal line SCL, and is electrically connected between the first node N1 of the drive transistor DRT and the data line DL.

[0110] The storage capacitor Cst can be connected between the first node N1 and the second node N2 of the driving transistor DRT.

[0111] Reference Figure 2 Each of the plurality of sub-pixels SP disposed in the display area DA of the display panel 110 of the transparent touch display device 100 may substantially include a light-emitting element ED, two transistors DRT and SCT and a capacitor Cst.

[0112] Each sub-pixel SP disposed in the display area DA of the display panel 110 of the transparent touch display device 100 may further include one or more transistors or one or more capacitors.

[0113] For example, such as Figure 2 As shown, each sub-pixel SP may further include a sensing transistor SENT for controlling the connection between the second node N2 of the driving transistor DRT and the reference voltage line RVL. The reference voltage line RVL may be a signal line for providing a reference voltage Vref to the sub-pixel SP.

[0114] like Figure 2 As shown, in one embodiment, the gate node of the sensing transistor SENT can be electrically connected to the gate node of the scanning transistor SCT. That is, the scan signal line SCL, which is electrically connected to the gate node of the scanning transistor SCT, can also be electrically connected to the gate node of the sensing transistor SENT.

[0115] In another embodiment, the gate node of the sensing transistor SENT may be electrically connected to a sensing signal line other than the scan signal line SCL connected to the gate node of the scanning transistor SCT.

[0116] The storage capacitor Cst can be an external capacitor intentionally designed outside the driving transistor DRT, rather than an internal capacitor such as a parasitic capacitor (e.g., Cgs, Cgd) that may exist between the first node N1 and the second node N2 of the driving transistor DRT.

[0117] Each of the driving transistor DRT, scanning transistor SCT, and sensing transistor SENT can be an n-type transistor or a p-type transistor.

[0118] Since the circuit elements (especially the light-emitting elements ED) in each sub-pixel SP are susceptible to external moisture or oxygen, an encapsulation layer ENCAP can be provided in the display panel 110 to prevent external moisture or oxygen from penetrating into the circuit elements (especially the light-emitting elements ED).

[0119] The encapsulation layer ENCAP can be configured to have various types or shapes.

[0120] In one embodiment, the encapsulation layer ENCAP may be configured to cover the light-emitting element ED. The encapsulation layer ENCAP may include one or more inorganic layers and one or more organic layers.

[0121] In another embodiment, the encapsulation layer ENCAP may include an encapsulation substrate, a dam disposed between the thin-film transistor array substrate and the encapsulation substrate along the outer edge of the display area DA, and filler material filling the internal space of the dam.

[0122] Figure 3 An example touch sensor structure of a transparent touch display device 100 according to various aspects of the present invention is illustrated.

[0123] Reference Figure 3 In some embodiments, the transparent touch display device 100 may include a touch sensor disposed in the touch sensing area TSA of the display panel 110.

[0124] In some embodiments, the touch sensor included in the transparent touch display device 100 may include a plurality of touch electrodes TE disposed in the touch sensing area TSA.

[0125] In some embodiments, the touch sensor included in the transparent touch display device 100 may further include multiple touch lines TL for electrically connecting multiple touch electrodes TE to multiple touch pads TP electrically connected to the touch driving circuit 160. Such touch lines TL are sometimes referred to as touch wiring.

[0126] In some embodiments, when the touch sensor included in the transparent touch display device 100 is configured to operate using a self-capacitance sensing method, the plurality of touch electrodes TE do not electrically overlap or intersect each other. In the self-capacitance type touch sensor structure, each of the plurality of touch electrodes TE can be a touch node corresponding to a touch coordinate.

[0127] In some embodiments, when the transparent touch display device 100 is configured to sense touch based on self-capacitance, the touch driving circuit 160 can provide a touch driving signal to at least one of a plurality of touch electrodes TE and can sense the touch electrode TE to which the touch driving signal has been provided.

[0128] Each of the multiple touch electrodes TE can be an electrode without openings or a mesh-type electrode with multiple openings. Furthermore, each of the multiple touch electrodes TE can be a transparent electrode.

[0129] The value obtained by sensing the touch electrode TE, which is provided with a touch drive signal, can be the capacitance in the touch electrode TE or a value corresponding to a change in capacitance. The capacitance of the touch electrode TE can be the capacitance between the touch electrode TE and a touch indicator such as a finger or pen.

[0130] As described above, in some embodiments, a touch sensor including a touch electrode TE can be integrated into a display panel 110 included in a transparent touch display device 100. Therefore, during the manufacturing process of the display panel 110, the touch electrode TE and touch line TL can also be formed together when forming electrodes, lines, and patterns related to display driving.

[0131] Figure 4 This is a plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0132] Reference Figure 4 In some embodiments, the display panel 110 included in the transparent touch display device 100 may include a cathode electrode region CA in which a cathode CE is disposed and overlaps with the display region DA.

[0133] In one embodiment, the cathode electrode region CA may have substantially the same area (size) as the display region DA. In this case, the entire cathode electrode region CA and the entire display region DA may overlap each other. In another embodiment, such as Figure 4 As shown, the cathode electrode region CA may have a larger area (size) than the display region DA. In this case, the cathode electrode region CA may include the area overlapping with the entire display region DA and the area overlapping with the non-display region NDA.

[0134] In the following, in the transparent touch display device 100 according to various aspects of the present invention, the cathode CE to which the base voltage EVSS is applied will be referred to as the display cathode.

[0135] In some embodiments, the transparent touch display device 100 may include one or more display cathodes, which may be disposed together in a cathode electrode layer in which one or more display cathodes are disposed.

[0136] For example, the transparent touch display device 100 may include one or more display cathodes and one or more touch cathodes. The one or more display cathodes and one or more touch cathodes may be disposed together in the cathode electrode region CA and together in the cathode electrode layer.

[0137] In some implementations, one or more display cathodes and one or more touch cathodes included in the transparent touch display device 100 need to be electrically disconnected from each other.

[0138] In some embodiments, one or more display cathodes included in the transparent touch display device 100 may be the cathodes CE of the light-emitting elements ED of a plurality of sub-pixels SP, and a base voltage EVSS may be applied to one or more display cathodes.

[0139] In some embodiments, one or more touch cathodes included in the transparent touch display device 100 may be used as touch sensors.

[0140] In some embodiments, the transparent touch display device 100 may include cathode division structures of the first, second, and third types.

[0141] For example, in a first type of cathode segmentation structure applied to a transparent touch display device 100, a display cathode and multiple touch cathodes, which are separate from each other, form a cathode electrode layer. In a second type of cathode segmentation structure applied to a transparent touch display device 100, a touch cathode and multiple display cathodes, which are separate from each other, form a cathode electrode layer. In a third type of cathode segmentation structure applied to a transparent touch display device 100, multiple display cathodes and multiple touch cathodes, which are separate from each other, form a cathode electrode layer.

[0142] The following text will refer to Figure 5 A more detailed description of the first type will be provided by referring to Figure 7 A more detailed description of the second type will be provided in reference to Figure 8 The third type will be described in further detail.

[0143] Figure 5 The diagram illustrates a first type of cathode partition structure of the display panel 110 of a transparent touch display device 100 according to various aspects of the present invention.

[0144] Reference Figure 5 In some embodiments, when the transparent touch display device 100 has a first type of cathode segmentation structure, a single display cathode (DCE) and multiple touch cathodes can be disposed in the cathode electrode layer (CEL). For example, the single display cathode (DCE) and multiple touch cathodes (TCEs) can contain the same material.

[0145] Because the lower portion of at least one lower layer located below the cathode electrode layer CEL has an inwardly (or downwardly, or both inwardly and downwardly) undercut shape (hereinafter referred to as "undercut" or "undercut structure"), the cathode electrode material is broken at the undercut of at least one lower layer when it is deposited on the lower layer. The cathode electrode material separated along the undercut corresponds to the display cathode DCE and the touch cathode TCE. For example, the at least one lower layer with the undercut may include a pixel electrode layer, a coating layer, a dam, etc., in which the anode AE ​​is formed.

[0146] A single display cathode (DCE) can correspond to the cathodes (CEs) of the light-emitting elements (EDs) of multiple sub-pixels (SPs). In this case, the base voltage (EVSS) can be applied to the single display cathode (DCE).

[0147] Multiple touch cathodes (TCEs) can be configured to be spaced apart from each other. Multiple touch cathodes (TCEs) can be arranged adjacent to a single display cathode (DCE), but embodiments of the invention are not limited thereto. For example, multiple touch cathodes (TCEs) can be configured to be located away from a single display cathode (DCE). Multiple touch cathodes (TCEs) can be electrically disconnected from a single display cathode (DCE).

[0148] Reference Figure 5In some embodiments, when the transparent touch display device 100 has a first type of cathode segmentation structure, a single display cathode (DCE) may include multiple openings. Each of the multiple touch cathodes (TCEs) may be configured as an island within the interior space of each of the multiple openings formed in the single display cathode (DCE).

[0149] Reference Figure 5 The display cathode (DCE), or at least a portion thereof, which serves as a display driving electrode, may be disposed between two adjacent touch cathodes (TCEs) among a plurality of touch cathodes (TCEs).

[0150] Reference Figure 5 One or more sub-pixels SP or one or more light-emitting areas of one or more sub-pixels SP can be disposed between two adjacent touch cathode TCEs among a plurality of touch cathode TCEs.

[0151] In one implementation, the area (size) of each of the plurality of touch cathode electrodes TCEs may be equal to the size of a sub-pixel SP or equal to the area corresponding to the sub-pixel SP.

[0152] In another embodiment, the area (size) of each of the plurality of touch cathode electrodes TCEs may be larger than the size of a sub-pixel SP or the area corresponding to a sub-pixel SP. For example, the area (size) of each of the plurality of touch cathode electrodes TCEs may correspond to the size of two or more sub-pixels SP or the area corresponding to two or more sub-pixels SP.

[0153] Figure 6A , 6B Figures 6 and 6C illustrate a touch sensor structure in a first type of case where the transparent touch display device 100 according to various aspects of the present invention has a cathode segmentation structure. For ease of description, in Figure 6A In the image, the cathode DCE is omitted, and only multiple touch cathodes TCE are shown.

[0154] Reference Figure 6A Multiple touch cathodes (TCEs) can be classified into multiple groups. Multiple groups can correspond to multiple touch electrodes (TEs). For example, a transparent touch display device 100 may include multiple touch electrodes (TEs), and one touch electrode (TE) may include two or more touch cathodes (TCEs).

[0155] exist Figure 6A In this example, the display panel 110 may include 12 touch electrodes TE arranged in 3 rows and 4 columns, and each touch electrode TE may include 20 touch cathodes TCE arranged in 4 rows and 5 columns. The following description is based on the configuration of this example.

[0156] For touch sensing to function properly, 20 touch cathodes (TCEs) need to be electrically connected to each other to function as a single touch electrode (TE).

[0157] In one embodiment, for normal touch sensing operation, the plurality of touch electrodes TE in the display panel 110 may be electrically disconnected from each other. In another embodiment, some of the plurality of touch electrodes TE may be electrically connected to each other within the touch driving circuit 160. This embodiment may be implemented as a group driving mechanism (or group sensing mechanism), in which two or more touch electrodes TE are sensed simultaneously.

[0158] As described above, for normal touch sensing operation, multiple touch electrodes TE need to be electrically disconnected from each other in the display panel 110, and each of the multiple touch electrodes TE needs to be electrically connected to the touch driving circuit 160.

[0159] This connection structure will be described below from the perspective of the touch cathode TCE. Two or more touch cathode TCEs located in the region of one touch electrode TE need to be electrically connected to each other. Two or more touch cathode TCEs located in the region of one touch electrode TE need to be electrically disconnected from two or more touch cathode TCEs located in the region of another touch electrode TE. In addition, two or more touch cathode TCEs located in the region of each touch electrode TE need to be electrically connected to the touch drive circuit 160.

[0160] Figure 6B Only the additional connecting elements (TL, TB, CP, CNT1, CNT2) for forming the touch sensor structure, located in the cathode electrode region CA, are illustrated. For ease of explanation, [the remaining text is incomplete and likely refers to a separate section about the diagram]. Figure 6B The cathode electrode layer (CEL) is omitted in the text. Figure 6C It is illustrated together in the plan. Figure 5 Cathode electrode layer CEL and Figure 6B Connecting elements (TL, TB, CP, CNT1, CNT2).

[0161] Reference Figure 6B and 6C In order for the touch sensor structure based on the above connection structure to operate normally, the display panel 110 may include multiple touch lines TL and multiple touch bridges TB.

[0162] Reference Figure 6B and 6C Multiple touch lines TL can each correspond to multiple touch electrodes TE. The multiple touch electrodes TE can be connected to the touch driver circuit 160 via multiple touch lines TL.

[0163] Reference Figure 6B and 6CAt least one touch bridge TB may be disposed in each region of a plurality of touch electrodes TE. For example, at least one touch bridge TB may be disposed in a region of one touch electrode TE.

[0164] Reference Figure 6B and 6C The following example illustrates the structure of a touch sensor in a touch electrode TE.

[0165] Reference Figure 6B and 6C For example, a touch electrode TE may include 20 touch cathodes TCE, and the 20 touch cathodes TCE may be arranged in 4 rows and 5 columns. For example, a touch electrode TE may include first to fourth rows of touch cathodes, and each first to fourth row of touch cathodes may include 5 touch cathodes TCE.

[0166] Reference Figure 6B and 6C Four touch bridges TB can be disposed in the area of ​​a touch electrode TE. The four touch bridges TB can correspond to the first to fourth touch cathode rows respectively. The five touch cathodes TCE included in each of the first to fourth touch cathode rows can be electrically connected to each other via a touch bridge TB.

[0167] Reference Figure 6B and 6C Multiple touch lines TL can be arranged across an area forming a touch electrode TE. One of the multiple touch lines TL can be electrically connected to the first to fourth touch cathode rows via four first contact holes CNT1.

[0168] Reference Figure 6B and 6C For example, each of the four touch bridges TB disposed in the area of ​​a touch electrode TE may correspond to five protrusion connection patterns CP. Thus, one touch bridge TB can be electrically connected to five touch cathodes TCE via the five protrusion connection patterns CP.

[0169] Reference Figure 6B and 6C The five protruding connection patterns CP in a touch bridge TB can be connected to the five touch cathodes TCE via five second contact holes CNT2 respectively.

[0170] Reference Figure 6B and 6C The first contact hole CNT1 can be used as a point to connect the touch line TL and the touch bridge TB, and the second contact hole CNT2 can be used as a point to connect the touch bridge TB and the touch cathode TCE. All 20 touch cathodes TCE can be electrically connected to a touch line TL via 4 first contact holes CNT1 and 20 second contact holes CNT2.

[0171] Figure 7 The diagram illustrates a second type of cathode segmentation structure of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0172] Reference Figure 7 In some embodiments, in the second type of cathode segmentation structure applied to the transparent touch display device 100, a single touch cathode TCE and a plurality of display cathodes DCEs separated from each other may be disposed in the cathode electrode layer CEL.

[0173] Reference Figure 7 In some embodiments, when the transparent touch display device 100 has a second type of cathode segmentation structure, a single touch cathode TCE and multiple display cathodes DCE may be disposed in the cathode electrode layer CEL. For example, the single touch cathode TCE and multiple display cathodes DCE may contain the same material (cathode electrode material).

[0174] Multiple display cathodes (DCEs) can correspond to the cathodes (CEs) of the light-emitting elements (EDs) of multiple sub-pixels (SPs). In this case, a base voltage (EVSS) can be applied to multiple display cathodes (DCEs).

[0175] Multiple display cathodes (DCEs) may be arranged adjacent to a single touch cathode (TCE), but embodiments of the present invention are not limited thereto. For example, multiple display cathodes (DCEs) may be arranged away from a single touch cathode (TCE). Multiple display cathodes (DCEs) may be electrically disconnected from a single touch cathode (TCE).

[0176] Reference Figure 7 In some embodiments, when the transparent touch display device 100 has a second type of cathode segmentation structure, a single touch cathode may include multiple openings. Each of the multiple display cathodes DCE may be configured as an island within the interior space of each of the multiple openings formed in a single touch cathode TCE.

[0177] Figure 8 The diagram illustrates a third type of cathode segmentation structure of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0178] Reference Figure 8 In some embodiments, in the third type of cathode segmentation structure applied to the transparent touch display device 100, a plurality of display cathodes (DCEs) and a plurality of touch cathodes (TCEs) separated from each other may be formed in the cathode electrode layer (CEL).

[0179] Reference Figure 8In some embodiments, when the transparent touch display device 100 has a third type of cathode segmentation structure, multiple touch cathodes TCE and multiple display cathodes DCE may be alternately arranged in the cathode electrode layer CEL.

[0180] Reference Figure 8 Each of the multiple touch cathodes (TCEs) and multiple display cathodes (DCEs) may have a bar shape. The multiple touch cathodes (TCEs) and multiple display cathodes (DCEs) may, for example, comprise the same material (cathode electrode material).

[0181] Multiple display cathodes (DCEs) can correspond to the cathodes (CEs) of the light-emitting elements (EDs) of multiple sub-pixels (SPs). In this case, a base voltage (EVSS) can be applied to multiple display cathodes (DCEs).

[0182] Each of the multiple display cathodes (DCEs) may be adjacent to a touch cathode (TCE) located on either side of the respective display cathode (DCE), but must be separated from the touch cathode (TCE). For example, the multiple display cathodes (DCEs) may be electrically disconnected from the multiple touch cathodes (TCEs).

[0183] In some embodiments, when the transparent touch display device 100 has Figure 5 In the first type of cathode segmentation structure, since a single display cathode (DCE) is used for display driving, the base voltage (EVSS), which serves as a common voltage, can be uniformly supplied to all sub-pixels (SP). This improves image quality.

[0184] In some embodiments, when the transparent touch display device 100 has Figure 7 In the second type of cathode segmentation structure, since a touch cathode TCE is used for touch driving, the touch bridge TB does not need to be set in the display panel 110. Therefore, the display panel 110 can have a simpler structure.

[0185] In some embodiments, when the transparent touch display device 100 has Figure 8 In the third type of cathode segmentation structure, the boundary between the touch cathode (TCE) and the display cathode (DCE) is formed as a straight line, thereby simplifying the process for forming the undercut.

[0186] Figure 9 The illustration shows a pixel region PA and a transmissive region (TA1 and TA2) in a portion of a display panel 110 of a transparent touch display device 100 according to various aspects of the present invention.

[0187] Reference Figure 9 In some embodiments, a portion of the display panel 110 of the transparent touch display device 100 may include a pixel region PA, a first transmissive region TA1, and a second transmissive region TA2.

[0188] Reference Figure 9 The first transmission region TA1 may be located on the first side of the pixel region PA, and the second transmission region TA2 may be located on the second side of the pixel region PA.

[0189] Reference Figure 9 Two or more sub-pixels (SP1, SP2, SP3, SP4) can be set in the pixel region PA between the first transmission region TA1 and the second transmission region TA2.

[0190] Reference Figure 9 The four sub-pixels SP1, SP2, SP3, and SP4 can be disposed in the pixel region PA between the first transmission region TA1 and the second transmission region TA2. The four sub-pixels SP1, SP2, SP3, and SP4 may include a sub-pixel that emits red light, a sub-pixel that emits green light, a sub-pixel that emits blue light, and a sub-pixel that emits white light.

[0191] Figure 10 The illustration shows the display cathode (DCE) and touch cathode (TCE1 and TCE2) respectively disposed in the pixel region PA and the transmission region (TA1 and TA2) in a portion of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0192] Reference Figure 10 The display cathode DCE, to which the base voltage EVSS for display driving is applied, can be disposed in the pixel region PA. The first touch cathode TCE1 can be disposed in the first transmission region TA1, and the second touch cathode TCE2 can be disposed in the second transmission region TA2.

[0193] In one embodiment, the first touch cathode TCE1 and the second touch cathode TCE2 may have the same shape or the same area.

[0194] In another embodiment, one of the first touch cathode TCE1 and the second touch cathode TCE2 may have a different shape or a different area from the other.

[0195] Reference Figure 10 For example, the display cathode DCE may include an electrode protrusion DCE_PRT. ​​In this case, the first touch cathode TCE1 may include an electrode groove TCE_GRV into which the electrode protrusion DCE_PRT of the display cathode DCE is inserted.

[0196] The electrode protrusion DCE_PRT of the cathode DCE and the electrode groove TCE_GRV of the first contact cathode TCE1 can be electrically disconnected from each other.

[0197] The cathode DCE can be configured such that its electrode protrusion DCE_PRT extends into the internal space of the first transmission region TA1.

[0198] In one implementation, refer to Figure 10 This indicates that a portion of the first edge of the cathode DCE can be configured to extend into the interior space of the first transmission region TA1. Similarly, a portion of the second edge of the cathode DCE can be configured to extend into the interior space of the second transmission region TA2.

[0199] Figure 11 The plan view illustrates the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0200] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may include: a display cathode DCE disposed in the pixel region PA, a first touch cathode TCE1 disposed in the first transmission region TA1, and a second touch cathode TCE2 disposed in the second transmission region TA2.

[0201] Reference Figure 11 This indicates that a portion of the first edge of the cathode DCE can be configured to extend into the interior space of the first transmission region TA1. Similarly, a portion of the second edge of the cathode DCE can be configured to extend into the interior space of the second transmission region TA2.

[0202] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may include multiple touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1 and multiple touch lines (TL4, TL5, TL6) overlapping with the second touch cathode TCE2.

[0203] Reference Figure 11 The first touch cathode TCE1 and the second touch cathode TCE2 may be included in a first touch electrode TE that is simultaneously subjected to a touch drive signal.

[0204] Reference Figure 11 A first touch electrode TE can be electrically connected to the touch pad TP via a first touch line TL1 among multiple touch lines (TL1, TL2, TL3) that overlap with the first touch cathode TCE1. That is, the first touch cathode TCE1 and the second touch cathode TCE2 can be electrically connected to the touch pad TP via the first touch line TL1 among multiple touch lines (TL1, TL2, TL3) that overlap with the first touch cathode TCE1.

[0205] Reference Figure 11The other touch lines (TL2, TL3) among the multiple touch lines (TL1, TL2, TL3) that overlap with the first touch cathode TCE1 may not be electrically connected to the first touch cathode TCE1. Instead, they may be electrically connected to another touch cathode TCE that is electrically disconnected from the first touch cathode TCE1 and the second touch cathode TCE2.

[0206] Reference Figure 11 All multiple touch lines (TL4, TL5, TL6) that overlap with the second touch cathode TCE2 may not be electrically connected to the second touch cathode TCE2. Instead, they may be electrically connected to another touch cathode TCE that is electrically disconnected from the first touch cathode TCE1 and the second touch cathode TCE2.

[0207] The display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can be cathode electrode materials that are disconnected by an undercut formed in at least one lower layer located below the cathode electrode layer CEL. Therefore, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can all comprise the same cathode electrode material. For example, the cathode electrode material can comprise a transparent conductive material.

[0208] Reference Figure 11 The first touch line TL1 can be electrically connected to the first touch cathode TCE1 or the second touch cathode TCE2.

[0209] For example, the first touch line TL1 can be electrically connected to the first touch cathode TCE1 via the first touch bridge TB. More specifically, since the protruding connection pattern CP of the first touch bridge TB is electrically connected to the first touch bridge TB via the second contact hole CNT2, the first touch line TL1 can be electrically connected to the first touch bridge TB via the first contact hole CNT1, and electrically connected to the first touch cathode TCE1 via the first touch bridge TB.

[0210] In some embodiments, when the transparent touch display device 100 has Figure 5 In the first type of cathode segmentation structure, the display cathode DCE may include multiple openings, a first touch cathode TCE1 may be disposed in the internal space of the first opening among the multiple openings of the display cathode DCE, and a second touch cathode TCE2 may be disposed in the internal space of the second opening among the multiple openings of the display cathode DCE.

[0211] In some embodiments, when the transparent touch display device 100 has Figure 7In the second type of cathode segmentation structure, the first touch cathode TCE1 and the second touch cathode TCE2 can be corresponding parts of an integrally formed touch cathode TCE; the touch cathode TCE can include multiple openings; the display cathode DCE can be disposed in the internal space of one of the multiple openings of the touch cathode TCE.

[0212] In some embodiments, when the transparent touch display device 100 has Figure 8 In the third type of cathode segmentation structure, the display cathode DCE can be disposed in the first edge of the first touch cathode TCE1; another display cathode DCE can be disposed in the second edge of the first touch cathode TCE1 opposite to the first edge; and the other display cathode DCE can be disposed separately from the display cathode DCE.

[0213] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first scan signal line SCL that spans a first transmissive region TA1, a pixel region PA, and a second transmissive region TA2.

[0214] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first touch bridge TB that spans the pixel region PA and electrically connects the first touch cathode TCE1 and the second touch cathode TCE2.

[0215] Reference Figure 11 In some embodiments, in the display panel 110 of the transparent touch display device 100, the first touch bridge TB may cross with the first touch line TL1, and the first touch line TL1 may be electrically connected to the first touch bridge TB via the first contact hole CNT1.

[0216] Reference Figure 11 The first touch bridge TB may include a first local bridge TBls having a first metal and a second local bridge TBg having a second metal different from the first metal.

[0217] For example, the first metal can be the same metal as the light shield (hereinafter referred to as the light shielding metal) located below the driving transistor DRT in the pixel region PA. The second metal can constitute the gate of the driving transistor DRT or the first scan signal line SCL, or the gate metal constituting various signal lines. The second metal can be located in a layer higher in the vertical direction than the first metal. For example, the second metal can be disposed further away from the substrate than the first metal.

[0218] Reference Figure 11The first partial bridge TBls and the second partial bridge TBg, which are included in the first touch bridge TB, may be located in different layers and are electrically connected to each other via multiple contact holes (C1, C2, C3, C4).

[0219] Reference Figure 11 The first touch line TL1 may include a first metal, and the first scan signal line SCL may include a second metal. The first touch line TL1 may be located in a layer lower in the vertical direction than the first scan signal line SCL. For example, the first touch line TL1 may be closer to the substrate than the first scan signal line SCL.

[0220] In some embodiments, the first touch line TL1 may be located in any of the following layers, excluding the layer where the first touch bridge TB is located: a first metal layer (e.g., a light-shielding metal layer) in which electrodes or lines including a first metal are disposed; a second metal layer (e.g., a gate metal layer) in which electrodes or lines including a second metal are disposed; a third metal layer (e.g., a source-drain metal layer) in which electrodes or lines including a third metal are disposed; and a fourth metal layer (e.g., a metal layer located between the third metal layer and the pixel electrode layer (anode electrode layer)) in which electrodes or layers including a fourth metal are disposed. Here, the first, second, third, and fourth metal layers may be arranged in an upward order, i.e., first metal layer, second metal layer, third metal layer, and fourth metal layer. For example, among the first, second, third, and fourth metal layers, the first metal layer may be the lowest layer closest to the substrate SUB, and the fourth metal layer may be the highest layer furthest from the substrate SUB.

[0221] Reference Figure 11 The first touch line TL1 may not intersect with the first partial bridge TBls of the first touch bridge TB. The first touch line TL1 may intersect with the second partial bridge TBg of the first touch bridge TB.

[0222] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first data line DL1, a second data line DL2, a third data line DL3, and a fourth data line DL4 disposed in the pixel area PA.

[0223] Reference Figure 11 Each of the first data line DL1, the second data line DL2, the third data line DL3, and the fourth data line DL4 may include a third metal different from the first metal and the second metal.

[0224] For example, the first metal can be the same metal as the light-shielding portion located below the driving transistor DRT in the pixel region PA. The second metal can constitute the gate of the driving transistor DRT or the first scan signal line SCL, or the gate metal constituting various signal lines. The third metal can constitute the source and drain of the driving transistor DRT, or the source-drain metal constituting various signal lines. The third metal layer in which the third metal is disposed can be located in a layer higher in the vertical direction than the second metal layer in which the second metal is disposed, and the second metal layer can be located in a layer higher in the vertical direction than the first metal layer in which the first metal is disposed. For example, the third metal layer can be farther away from the substrate SUB than the second metal layer, and the second metal layer can be farther away from the substrate SUB than the first metal layer.

[0225] Reference Figure 11 Each of the first data line DL1, the second data line DL2, the third data line DL3, and the fourth data line DL4 can intersect with the first partial bridge TBls or the second partial bridge TBg of the first touch bridge TB.

[0226] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device may further include a reference voltage line RVL disposed in the pixel region PA.

[0227] The reference voltage line RVL can be set in the center region of the pixel area PA (in the vertical or column direction). The reference voltage line RVL can overlap with the display cathode DCE and can be set in the center region of the display cathode DCE (in the vertical or column direction).

[0228] The reference voltage line RVL may include a first metal, and the reference voltage line RVL may cross a second local bridge TBg of the first touch bridge TB.

[0229] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a base voltage line BVL disposed in the pixel region PA and overlapping with the display cathode DCE.

[0230] Reference Figure 11 The base voltage line BVL may include a first local base voltage line BVLg having a second metal, and a second local base voltage line BVLs having a third metal different from the first metal and the second metal.

[0231] Reference Figure 11 The second local base voltage line BVLs may include a double-layer portion that overlaps with the first local base voltage line BVLg and a single-layer portion that does not overlap with the first local base voltage line BVLg.

[0232] Reference Figure 11 The first local base voltage line BVLg may at least partially overlap with the first local bridge TBls of the first touch bridge TB. The double-layer portion of the second local base voltage line BVLs may at least partially overlap with the first local bridge TBls of the first touch bridge TB.

[0233] Reference Figure 11 The first local base voltage line BVLg may not intersect with the first scan signal line SCL, and the second local base voltage line BVLs may intersect with the first scan signal line SCL.

[0234] Reference Figure 11 The base voltage line BVL can be positioned between the first side or edge of the display cathode DCE and the reference voltage line RVL.

[0235] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a drive voltage line DVL disposed in the pixel region PA and overlapping with the display cathode DCE.

[0236] Reference Figure 11 The driving voltage line DVL may include a first local driving voltage line DVLg having a second metal, and a second local driving voltage line DVLs having a third metal different from the first metal and the second metal.

[0237] Reference Figure 11 The second local driving voltage line DVLs may include a double-layer portion that overlaps with the first local driving voltage line DVLg and a single-layer portion that does not overlap with the first local driving voltage line DVLg.

[0238] Reference Figure 11 The first local driving voltage line DVLg can overlap with the first local bridge TBls of the first touch bridge TB. The double-layer portion of the second local driving voltage line DVLs can overlap with the first local bridge TBls of the first touch bridge TB.

[0239] On the other hand, the first local driving voltage line DVLg may not overlap with the second local bridge TBg of the touch bridge TB, and the double-layer portion of the second local driving voltage line DVLs may not overlap with the second local bridge TBg of the first touch bridge TB.

[0240] Reference Figure 11 The driving voltage line DVL can be positioned between the second side or edge of the display cathode DCE and the reference voltage line RVL.

[0241] Reference Figure 11In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a base voltage line BVL disposed in the pixel region PA and overlapping with the display cathode DCE and electrically connected to the display cathode DCE.

[0242] Reference Figure 11 The display cathode DCE may include an electrode protrusion DCE_PRT. ​​The first touch cathode TCE1 may include an electrode groove TCE_GRV into which the electrode protrusion DCE_PRT of the display cathode DCE is inserted. The electrode protrusion DCE_PRT of the display cathode DCE and the electrode groove TCE_GRV of the first touch cathode TCE1 may be electrically disconnected from each other.

[0243] Reference Figure 11 The base voltage line BVL may include line protrusions BVLs_PRT that overlap with the electrode protrusions DCE_PRT of the display cathode DCE. The line protrusions BVLs_PRT of the base voltage line BVL may be electrically connected to the electrode protrusions DCE_PRT of the display cathode DCE via the display cathode contact pattern CNT_DCE.

[0244] Reference Figure 11 The first touch line TL1 can overlap with the first touch cathode TCE1 and can bend along the electrode groove TCE_GRV of the first touch cathode TCE1.

[0245] Reference Figure 11 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include other touch lines (LT4, LT5, LT6) disposed in the second transmission region TA2, which intersect with the first touch bridge TB and overlap with the second touch cathode TCE2.

[0246] Figure 12 The diagram illustrates the display panel of a transparent touch display device according to various aspects of the present invention. Figure 11 A cross-sectional view of the cathode partition boundary region BA.

[0247] In some embodiments, when the display panel 110 of the transparent touch display device 100 has a cathode segmentation structure, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can be cathode electrode materials that are cut off by an undercut portion of at least one lower layer located below the cathode electrode layer CEL.

[0248] For example, at least one lower layer having an undercut may include a pixel electrode layer having an anode AE ​​formed therein, a coating layer, a dam, etc., and in some cases may include at least one of a first passivation layer PAS1, a second passivation layer PAS2, and an interlayer insulating layer ILD.

[0249] Based on this undercut structure configured in the lower layer as described above, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 may comprise the same cathode electrode material. For example, the cathode electrode material may comprise a transparent conductive material.

[0250] In other words, such as Figure 12 As shown, in Figure 11 In the cathode partition boundary region BA shown, the lower layer located below the display cathode DCE may have an undercut, wherein the lower portion of the lower layer is recessed (e.g., recessed inward and / or downward). The cathode partition boundary region BA may be the boundary region BA located between the display cathode DCE and the first touch cathode TCE1.

[0251] Similarly, even in the boundary region between the display cathode DCE and the second touch cathode TCE2, the lower layer below the display cathode DCE may have an undercut, wherein the lower portion of the lower layer is recessed (e.g., recessed inward and / or downward).

[0252] In some embodiments, when the display panel 110 of the transparent touch display device 100 has a cathode partition structure, the display panel 110 may further include a lower layer located below the display cathode DCE.

[0253] The lower layer may have an undercut structure, with its lower portion recessed inward (or inward and downward). At point BA where the lower layer has an undercut structure, the cathode DCE and the first touch cathode TCE1 are electrically disconnectable, and at another point BA where the lower layer or another lower layer has another undercut structure, the cathode DCE and the second touch cathode TCE2 are electrically disconnectable.

[0254] Figure 13 A cross-sectional view of the touch line region TLA in the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention is illustrated.

[0255] Reference Figure 11 and 13 The first touch cathode TCE1 and the second touch cathode TCE2 can be electrically connected through the first touch bridge TB, thereby forming a first touch electrode TE.

[0256] Reference Figure 11 and 13 In the first transmission region TA1, the first touch line TL1, the second touch line TL2 and the third touch line TL3 can overlap with the first touch cathode TCE1.

[0257] Reference Figure 11 and 13Of the first touch line TL1, the second touch line TL2, and the third touch line TL3 that overlap with the first touch cathode TCE1, only the first touch line TL1 can be electrically connected to the first touch cathode TCE1. Of the first touch line TL1, the second touch line TL2, and the third touch line TL3 that overlap with the first touch cathode TCE1, the second touch line TL2 and the third touch line TL3 can be not electrically connected to the first touch cathode TCE1.

[0258] Reference Figure 11 and 13 The first touch line TL1, the second touch line TL2, and the third touch line TL3 can be located in the light-shielding metal layer on the substrate SUB, and the buffer layer BUF can be disposed on the substrate SUB, such that the buffer layer BUF covers the first touch line TL1, the second touch line TL2, and the third touch line TL3. The buffer layer BUF can be a single layer or multiple layers.

[0259] Reference Figure 13 The gate insulating layer GI can be disposed on the buffer layer BUF, and the passivation layer PAS can be disposed on the gate insulating layer GI. The passivation layer PAS can be a single layer or multiple layers. The coating layer OC can be disposed on the passivation layer PAS, and the embankment BK can be further disposed on the coating layer OC.

[0260] Reference Figure 13 The light-emitting layer EL can be disposed on the coating layer OC or on the embankment BK of the coating layer OC. The first touch cathode TCE1 can be located on the light-emitting layer EL.

[0261] Reference Figure 13 The portion of the light-emitting layer EL that overlaps with the first touch line TL1, the second touch line TL2, and the third touch line TL3 can correspond to the portion extending from the pixel region PA, and since there is no anode AE ​​under this portion of the light-emitting layer EL, it will not emit the desired amount of light.

[0262] Figure 14 The diagram illustrates the application of a first touch cathode TCE1 and first touch lines TL1, TL2, and TL3 (e.g., as shown in the diagram) to the display panel 110 of a transparent touch display device 100 according to various aspects of the present invention. Figure 11 The signal shown is a signal.

[0263] Reference Figure 14 The first touch line TL1 and the first touch cathode TCE1 may have the same electrical state. In addition, the second touch line TL2 and the third touch line TL3 may also have the same electrical state as the first touch cathode TCE1.

[0264] The reason is as follows: In the first transmission region TA1, the first touch line TL1, the second touch line TL2, and the third touch line TL3 can overlap with the first touch cathode TCE1, and a signal having at least one equal signal characteristic can be applied to all of the first touch line TL1, the second touch line TL2, the third touch line TL3, and the first touch cathode TCE1. Here, at least one equal signal characteristic can refer to at least one of the following: frequency, phase, amplitude, etc., being equal.

[0265] More specifically, since the touch drive signal output from the touch drive circuit 160 is applied to the first touch cathode TCE1 via the first touch line TL1, the first touch line TL1 and the first touch cathode TCE1 can have the same electrical state. Furthermore, a touch drive signal for touch sensing, or a no-load drive signal corresponding to the touch drive signal for reducing parasitic capacitance, can be applied to the second touch line TL2 and the third touch line TL3. Here, the no-load drive signal can have at least one signal characteristic equal to the signal characteristics of the touch drive signal. Equality of at least one signal characteristic can refer to at least one of frequency, phase, amplitude, etc., being equal. Therefore, all of the first touch line TL1, the second touch line TL2, the third touch line TL3, and the first touch cathode TCE1 can have the electrical state generated by applying signals with equal signal characteristics.

[0266] Reference Figure 14 The display cathode DCE may have a different electrical state than the first touch line TL1, the second touch line TL2, the third touch line TL3, and the first touch cathode TCE1. For example, a base voltage EVSS with a constant voltage level may be applied to the display cathode DCE. A touch drive signal or a no-load drive signal with a voltage level that varies over time may be applied to the first touch line TL1, the second touch line TL2, the third touch line TL3, and the first touch cathode TCE1.

[0267] like Figure 14 As shown, since the first touch line TL1 and the first touch cathode TCE1 have the same electrical state, unnecessary parasitic capacitance between the first touch line TL1 and the first touch cathode TCE1 can be prevented, thereby improving touch sensitivity.

[0268] Figure 15 This is a cross-sectional view of the display panel 110 in the transparent touch display device 100 according to various aspects of the present invention. For ease of explanation, Figure 15 A simplified illustration shows a portion of the cross-sectional structure of the pixel region PA and the first transmission region TA1 in the configuration shown in the preceding figures. Furthermore, for ease of explanation, Figure 15The diagram illustrates only the first touch line TL1, which is one of the first touch line TL1, the second touch line TL2, and the third touch line TL3 that overlap with the first touch cathode TCE1.

[0269] Reference Figure 15 The driving transistor DRT, anode AE, display cathode DCE, etc., can be set in the pixel area PA. The first touch cathode TCE1, first touch line TL1, first touch bridge TB, etc., can be set in the first transmission area TA1.

[0270] Reference Figure 15 The anode AE ​​can be located in the pixel electrode layer (anode electrode layer) in the pixel region PA, above the driving transistor DRT, and electrically connected to the source S or drain D of the driving transistor DRT. The light-emitting layer EL can be located between the anode AE ​​and the display cathode DCE.

[0271] Reference Figure 15 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a light shielding portion LS, which is located below the driving transistor DRT and overlaps with the active layer ACT of the driving transistor DRT. The layer where the light shielding portion LS is located may be referred to as a light shielding metal layer.

[0272] The light shielding element LS can be set in the pixel area PA.

[0273] The first touch line TL1, which overlaps with the first touch cathode TCE1, may be located within the light-shielding metal layer. Therefore, the light-shielding portion LS and the first touch line TL1 may comprise the same material (light-shielding metal).

[0274] although Figure 15 The diagram illustrates that the first touch line TL1 is located within the first metal layer (light-shielding metal layer), but embodiments of the present invention are not limited thereto. For example, the first touch line TL1 may be located in or on a layer different from the first metal layer. For example, the first touch line TL1 may be located in any one of the following layers, excluding the layer where the first touch bridge TB is located: the first metal layer (light-shielding metal layer), the second metal layer (gate metal layer), the third metal layer (source-drain metal layer), and the fourth metal layer (metal layer located between the third metal layer and the pixel electrode layer (anode electrode layer)).

[0275] Reference Figure 15 In some embodiments, the display panel 110 of the transparent touch display device 100 may have a top-emitting structure, wherein light for image display is emitted onto the upper surface of the encapsulation substrate ENCAP_SUB. For this purpose, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 may comprise the same transparent conductive material, and the anode AE ​​may comprise a reflective metallic material.

[0276] Reference Figure 15 The vertical structure of the display panel 110 is described in more detail.

[0277] Reference Figure 15 A light-shielding metal layer, serving as the first metal layer, may be disposed on the substrate SUB. Here, the light-shielding metal layer, serving as the first metal layer, may be a layer in which a light-shielding metal serving as the first metal is disposed, and is positioned closest to the substrate SUB.

[0278] Reference Figure 15 The light-shielding portion LS and the first touch line TL1 may be disposed in the light-shielding metal layer, which serves as the first metal layer. Furthermore, the first partial bridge TBls of the first touch bridge TB may be disposed in the light-shielding metal layer. The light-shielding portion LS, the first touch line TL1, and the first partial bridge TBls of the first touch bridge TB may include light-shielding metal.

[0279] Reference Figure 15 The buffer layer BUF can be configured to cover the light shield LS and the first touch line TL1. The buffer layer BUF can be a single layer or multiple layers.

[0280] Reference Figure 15 The active layer ACT can be set on the buffer layer BUF, and the gate insulating layer GI can be set such that the gate insulating layer GI covers the active layer ACT.

[0281] Reference Figure 15 The gate G and the second local bridge TBg of the first touch bridge TB can be disposed on the gate insulating layer GI. The layer where the gate G and the second local bridge TBg of the first touch bridge TB are located is referred to as the gate metal layer as the second metal layer. The second local bridge TBg of the gate G and the first touch bridge TB may include the gate metal as the second metal. In addition, the first local base voltage line BVLg of the base voltage line BVL and the first local drive voltage line DVLg of the drive voltage line DVL can be further disposed in the gate metal layer.

[0282] Reference Figure 15 An interlayer insulating layer (ILD) may be disposed on the gate G, and a source S and a drain D, which are source-drain metals serving as a third metal, may be disposed on the interlayer insulating layer (ILD). Furthermore, a second local base voltage line (BVLs) of the base voltage line (BVL) and a second local drive voltage line (DVLs) of the drive voltage line (DVL) may be further disposed in the source-drain metal layer, which serves as a third metal layer.

[0283] Reference Figure 15 The source electrode S can be connected to one side or edge of the active layer ACT through a via in the gate insulating layer GI. The drain electrode D can be connected to the other side or edge of the active layer ACT through a via in the gate insulating layer GI.

[0284] Reference Figure 15 The source S can be connected to the optical shield LS using vias formed in the gate insulating layer GI and the buffer layer BUF. Therefore, stable operation of the drive transistor DRT, which is related to the body effect, can be performed.

[0285] Reference Figure 15 The first passivation layer PAS1 can be disposed on the source-drain metal layer. The cathode contact pattern CNT_DCE can be disposed on the first passivation layer PAS1. The layer where the cathode contact pattern CNT_DCE is located is referred to as the fourth metal layer. The cathode contact pattern CNT_DCE can be connected to the second local base voltage line BVLs of the base voltage line BVL via a via in the first passivation layer PAS1. (See also...) Figure 11 and 15 A portion of the second local base voltage line BVLs that is in contact with or connected to the base voltage line BVL displaying the cathode contact pattern CNT_DCE may be a line protrusion BVLs_PRT of the base voltage line BVL.

[0286] Reference Figure 15 The second passivation layer PAS2 can be configured such that it covers the display cathode contact pattern CNT_DCE on the first passivation layer PAS1. The metal layer between the first passivation layer PAS1 and the second passivation layer PAS2 can be a fourth metal layer including a fourth metal, and the display cathode contact pattern CNT_DCE can be located in the fourth metal layer.

[0287] Reference Figure 15 The coating layer OC can be disposed on the first passivation layer PAS1 and the second passivation layer PAS2. The lower portion of the coating layer PC can have an undercut structure.

[0288] Reference Figure 15 The anode AE ​​can be disposed on the coating layer OC, and the anode AE ​​can be connected to the source S of the driving transistor DRT through a via formed in the coating layer OC and the first passivation layer PAS1.

[0289] Reference Figure 15 The dam portion BK may be disposed on the anode AE. The dam portion BK may have an opening through which the top surface of a portion of the anode AE ​​may be exposed. The dam portion BK may be disposed in the pixel region PA and not disposed in the first transmission region TA1.

[0290] Reference Figure 15The light-emitting layer EL can be disposed in both the pixel region PA and the first transmission region TA1. In the pixel region PA, the light-emitting layer EL can be disposed on the embankment BK and can be configured to contact the top surface of at least a portion of the anode AE ​​in the opening of the embankment BK. In the first transmission region TA1, the light-emitting layer EL can be disposed on the coating layer OC.

[0291] However, the light-emitting layer EL in pixel region PA and the light-emitting layer EL in first transmission region TA1 may not be connected to each other. For example, the light-emitting layer EL in pixel region PA and the light-emitting layer EL in first transmission region TA1 may be disconnected from each other at the boundary region between pixel region PA and first transmission region TA1. For example, the light-emitting layer EL may be disconnected by the undercut structure of coating layer OC at the boundary region between pixel region PA and first transmission region TA1.

[0292] Reference Figure 15 The cathode electrode material in the cathode electrode layer CEL can be located on the light-emitting layer EL, and can be disconnected in the boundary region between the pixel region PA and the first transmission region TA1 through the undercut structure of the coating layer OC. As a result, the cathode electrode material located on the light-emitting layer EL in the pixel region PA can be defined as the display cathode DCE, and the cathode electrode material located on the light-emitting layer EL in the first transmission region TA1 can be defined as the first touch cathode TCE1.

[0293] Reference Figure 15 In the boundary region between the pixel region PA and the first transmission region TA1, the display cathode DCE can be electrically connected to the display cathode contact pattern CNT_DCE using vias formed in the coating layer OC and the second passivation layer PAS2. Therefore, the display cathode DCE can be electrically connected to the second local base voltage line BVLs of the base voltage line BVL via the display cathode contact pattern CNT_DCE.

[0294] Reference Figure 15 In another boundary region between the pixel region PA and the first transmission region TA1, the first touch cathode TCE1 can be electrically connected to the second local bridge TBg of the first touch bridge TB using a via formed in the coating layer OC and the second passivation layer PAS2.

[0295] Reference Figure 15 The display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can be located in the cathode electrode layer CEL, and the encapsulation layer ENCAP can be disposed on the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 located in the cathode electrode layer CEL.

[0296] Reference Figure 15The encapsulation layer ENCAP may include an encapsulation substrate, a dam located between the thin-film transistor array substrate SUB and the encapsulation substrate ENCAP_SUB along the outer edge of the display area DA, and a filler ENCAP_FILL filling the internal space of the dam.

[0297] The encapsulation layer ENCAP can be configured to have various types or shapes. Unlike Figure 15 In some embodiments, the ENCAP encapsulation layer may be configured to include one or more inorganic layers and one or more organic layers.

[0298] At the same time, refer to Figure 15 The maximum separation distance Ht between the first touch cathode TCE1 and the substrate SUB and the maximum separation distance Ht between the second touch cathode TCE2 and the substrate SUB can both be shorter than the maximum separation distance Hd between the display cathode DCE and the substrate SUB.

[0299] Figure 16 and 17 This is a plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0300] Reference Figure 16 Regarding the first transmission area TA1, the display panel 110 may include multiple touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1, such as... Figure 11 As shown. In contrast, regarding the second transmission region TA2, the display region 110 may not include the multiple touch lines (TL4, TL5, TL6) that overlap with the second touch cathode TCE2.

[0301] Because the number of touch lines is determined based on the number of touch electrodes, the arrangement of the touch lines in the first transmission region TA1 and the second transmission region TA2 may be uneven, such as... Figure 16 As shown. This can lead to poor touch sensitivity.

[0302] Reference Figure 17 Furthermore, virtual lines (DM1, DM2, DM3) that overlap with the second touch cathode TCE2 can be set to solve the problem of uneven arrangement of each touch line in the first transmission region TA1 and the second transmission region TA2.

[0303] The number of virtual lines (DM1, DM2, DM3) overlapping with the second touch cathode TCE2 can be equal to the number of touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1.

[0304] The virtual lines (DM1, DM2, DM3) that overlap with the second touch cathode TCE2 may have different electrical states than the first touch line TL1, or may have a floating state, or may not be sensed by the touch drive circuit 160 that senses the first touch line TL1.

[0305] Figure 18 In the application of touch shielding structure Figure 11 In the case of display panel 110, a plan view of display panel 110. Figure 19 yes Figure 18 A cross-sectional view of the TLA touch line area in the image. Figure 20 yes Figure 18 A cross-sectional view of the display panel 110. In the following discussion, for ease of illustration, the first to third touch lines TL1 to TL3 overlapping with the first touch cathode TCE1 will be described as an example.

[0306] Reference Figure 18 In some embodiments, in the display panel 110 of the transparent touch display device 100, the first touch line TL1 may be electrically connected to at least one of the first touch cathode TCE1 and the second touch cathode TCE2.

[0307] Reference Figure 18 In some embodiments, in the display panel 110 of the transparent touch display device 100, since the first to third touch lines TL1 to TL3 are configured to be adjacent to other electrodes or lines related to display driving, coupling noise may occur between the first to third touch lines TL1 to TL3 and adjacent display driving-related patterns. Adjacent display driving-related patterns may include display driving-related electrodes such as anodes AE, or various display lines such as data lines DL1 to DL4, base voltage line BVL, reference voltage line RVL, drive voltage line DVL, etc.

[0308] For example, at least one of the first to third touch lines TL1 to TL3 and an adjacent display driver-related pattern can be capacitively coupled. The electrical state of at least one of the first to third touch lines TL1 to TL3 can affect the electrical state of at least one of the adjacent display driver-related patterns. Furthermore, the electrical state of at least one of the adjacent display driver-related patterns can affect the electrical state of at least one of the first to third touch lines TL1 to TL3.

[0309] Therefore, when coupling noise occurs between the first to third touch lines TL1 to TL3 and the adjacent display driver-related patterns, the display driver can affect touch sensing, thereby degrading touch sensitivity, or the touch driver can affect the display driver, thereby degrading image quality.

[0310] Therefore, in some embodiments, the display panel 110 of the transparent touch display device 100 may include a touch shielding structure for reducing or preventing interference between the display driver and the touch driver.

[0311] Reference Figures 18 to 20 The touch shielding structure in the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention may further include a first upper touch shield (UTS1) disposed above the first touch line TL1 and overlapping at least a portion of the first touch line TL1.

[0312] Reference Figures 18 to 20 The first upper touch shield UTS1 may be disposed in a fourth metal layer between the source-drain metal layer (third metal layer) in which the source or drain of the driving transistor DRT is disposed and the pixel electrode layer in which the anode AE ​​is disposed.

[0313] Reference Figures 18 to 20 The fourth metal layer, which has the first upper touch shield UTS1, can be a metal layer located between the source-drain metal layer (which is the third metal layer) and the pixel electrode layer. The fourth metal layer can be a metal layer located between the first passivation layer PAS1 and the second passivation layer PAS2. The first passivation layer PAS1 can be an insulating layer located on the source-drain metal layer (which is the third metal layer). The fourth metal layer can be located on the first passivation layer PAS1, and the second passivation layer PAS2 can be located on the fourth metal layer.

[0314] Reference Figures 18 to 20 In some embodiments, in the display panel 110 of the transparent touch display device 100, the first touch line TL1 and the first upper touch shield UTS1 may overlap with at least a portion of the first touch cathode TCE1.

[0315] Reference Figures 18 to 20 The display panel 110 may include multiple touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1. The multiple touch lines (TL1, TL2, TL3) may include the first touch line TL1.

[0316] Reference Figures 18 to 20 The first upper touch shield UTS1 can completely overlap with the multiple touch lines (TL1, TL2, TL3) that overlap with the first touch cathode TCE1. The line width Ws of the first upper touch shield UTS1 can be greater than the width Wt of the area in which the multiple touch lines (TL1, TL2, TL3) are disposed.

[0317] Reference Figure 18In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a second upper touch shield UTS2, which overlaps with all of the multiple touch lines (TL4, TL5, TL6) that overlap with the second touch cathode TCE2.

[0318] Reference Figure 18 In the display panel 110 of the transparent touch display device 100 according to the present invention, the multiple touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1 can be configured such that the multiple touch lines (TL1, TL2, TL3) bend along the electrode groove TCE_GRV of the first touch cathode TCE1. Therefore, the first upper touch shield UTS1 overlapping with the multiple touch lines (TL1, TL2, TL3) overlapping with the first touch cathode TCE1 can be configured to bend along the electrode groove TCE_GRV of the first touch cathode TCE1.

[0319] Reference Figure 18 The second upper touch shield UTS2 can be set to a straight line without any bends.

[0320] Reference Figure 20 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a side touch shield STS disposed adjacent to the first touch line TL1.

[0321] Reference Figure 20 In some embodiments, the side touch shield STS in the display panel 110 of the transparent touch display device 100 may include the same material as the first touch line TL1. For example, the side touch shield STS and the first touch line TL1 may be disposed in a light-shielding metal layer that serves as a first metal layer.

[0322] Reference Figure 20 In the first side or edge of the first touch line TL1 and the second side or edge opposite to the first side or edge, the side touch shield STS can be configured to be adjacent to the second side or edge that is closer to the anode AE ​​than the first side or edge. Therefore, since the side touch shield STS is disposed between the anode AE ​​and the first touch line TL1, coupling noise that may form between the anode AE ​​and touch lines TL1 to TL3 can be prevented by the side touch shield STS.

[0323] Figure 21 This is a plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0324] Reference Figure 21In some embodiments, the display panel 110 of the transparent touch display device 100 may include a display cathode DCE disposed in the pixel region PA, a first touch cathode TCE1 disposed in the first transmission region TA1, and a second touch cathode TCE2 disposed in the second transmission region TA2.

[0325] Reference Figure 21 This indicates that a portion of the first edge of the cathode DCE can be configured to extend into the interior space of the first transmission region TA1. Similarly, a portion of the second edge of the cathode DCE can be configured to extend into the interior space of the second transmission region TA2.

[0326] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include multiple touch lines (TL1, TL2, TL3, TL4, TL5) that overlap with the display cathode DCE.

[0327] Reference Figure 21 The first touch cathode TCE1 and the second touch cathode TCE2 may be included in a first touch electrode TE that is simultaneously subjected to a touch drive signal.

[0328] Reference Figure 21 A first touch electrode TE can be electrically connected to the touch pad TP via one of the multiple touch lines (TL1, TL2, TL3, TL4, TL5) that overlap with the display cathode DCE. That is, the first touch cathode TCE1 and the second touch cathode TCE2 can be electrically connected to the touch pad TP via one of the multiple touch lines (TL1, TL2, TL3, TL4, TL5) that overlap with the display cathode DCE.

[0329] Reference Figure 21 Of the multiple touch lines (TL1, TL2, TL3, TL4, TL5) that overlap with the display cathode DCE, the remaining touch lines (TL2, TL3, TL4, TL5) may not be electrically connected to the first touch cathode TCE1 and / or the second touch cathode TCE2, but may be electrically connected to another touch cathode TCE that is electrically disconnected from the first touch cathode TCE1 and the second touch cathode TCE2.

[0330] The display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can be cathode electrode materials that are disconnected by an undercut formed in at least one lower layer located below the cathode electrode layer CEL. Therefore, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 can all comprise the same cathode electrode material. For example, the cathode electrode material can comprise a transparent conductive material.

[0331] Reference Figure 21 The first touch line TL1 can be electrically connected to the first touch cathode TCE1 or the second touch cathode TCE2.

[0332] For example, the first touch line TL1 can be electrically connected to the first touch cathode TCE1 or the second touch cathode TCE2 via the first touch bridge TB. More specifically, since the first touch line TL1 is electrically connected to the first touch bridge TB via the first contact hole CNT1, and the connection pattern CP protruding from or connected to the first touch bridge TB is electrically connected to the first touch cathode TCE1 via the second contact holes (CNT2_1, CNT_2), the first touch line TL1 can be electrically connected to the first touch cathode TCE1 via the first touch bridge TB.

[0333] For example, the first touch line TL1 can be electrically connected to the first touch cathode TCE1 in the following manner: the first touch line TL1 can be electrically connected to the first touch bridge TB via the first contact hole CNT1; the first touch bridge TB can be electrically connected to the connection pattern CP via a second contact hole CNT2_1; the connection pattern CP can be electrically connected to the first touch cathode TCE1 via another second contact hole CNT_2.

[0334] In some embodiments, the transparent touch display device 100 has Figure 5 In the first type of cathode segmentation structure, the display cathode DCE may include multiple openings; the first touch cathode TCE1 may be disposed in the internal space of the first opening among the multiple openings of the display cathode DCE; and the second touch cathode TCE2 may be disposed in the internal space of the second opening among the multiple openings of the display cathode DCE.

[0335] In some embodiments, when the transparent touch display device 100 has Figure 7 In the second type of cathode segmentation structure, the first touch cathode TCE1 and the second touch cathode TCE2 can be corresponding parts of an integrally formed touch cathode TCE; the touch cathode TCE can include multiple openings; the display cathode DCE can be disposed in the internal space of one of the multiple openings of the touch cathode TCE.

[0336] In some embodiments, when the transparent touch display device 100 has Figure 8 In the third type of cathode segmentation structure, the display cathode DCE can be disposed in the first edge of the first touch cathode TCE1, and the other display cathode DCE can be disposed in the second edge of the first touch cathode TCE1 opposite to the first edge, and the other display cathode DCE can be disposed separately from the display cathode DCE in the first edge.

[0337] Reference Figure 21In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first scan signal line SCL that spans a first transmissive region TA1, a pixel region PA, and a second transmissive region TA2.

[0338] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first touch bridge TB that spans the pixel region PA and electrically connects the first touch cathode TCE1 and the second touch cathode TCE2.

[0339] Reference Figure 21 In some embodiments, in the display panel 110 of the transparent touch display device 100, the first touch bridge TB may cross with the first touch line TL1, and the first touch line TL1 may be electrically connected to the first touch bridge TB via the first contact hole CNT1.

[0340] Reference Figure 21 The first touch bridge TB may include a first local bridge TBls having a first metal and a second local bridge TBg having a second metal different from the first metal.

[0341] For example, the first metal can be the same metal as the light-shielding portion (light-shielding metal) located below the driving transistor DRT in the pixel region PA. The second metal can constitute the gate of the driving transistor DRT or the first scan signal line SCL, or it can be the gate metal constituting various signal lines. The second metal can be located in a layer higher than the first metal in the vertical direction. For example, the second metal can be farther away from the substrate than the first metal.

[0342] Reference Figure 21 The first local bridge TBls and the second local bridge TBg, which are included in the first touch bridge TB, may be located in different layers and are electrically connected to each other via multiple contact holes (C1, C2).

[0343] Reference Figure 21 The first touch line TL1 may include a metal different from the first and second metals (e.g., a fourth metal). For example, the first touch line TL1 may be disposed in a fourth metal layer. The fourth metal layer may be a metal layer located between a third metal layer (e.g., a source-drain metal layer) in which the source or drain of the driving transistor DRT is disposed and a pixel electrode layer in which the anode AE ​​is disposed.

[0344] Therefore, when the first touch line TL1 is disposed in the fourth metal layer, the first touch line TL1 can intersect with at least one of the first local bridge TBls of the first touch bridge TB disposed in the first metal layer and the second local bridge TBg of the first touch bridge TB disposed in the second metal layer.

[0345] The first touch line TL1 may include a first metal. For example, the first touch line TL1 may be disposed in the first metal layer.

[0346] Therefore, when the first touch line TL1 is disposed in the first metal layer, the first touch line TL1 can intersect with the first partial bridge TBls of the first touch bridge TB disposed in the first metal layer and the second partial bridge TBg of the first touch bridge TB disposed in the second metal layer.

[0347] In some embodiments, the first touch line TL1 may be located in any of the following layers, excluding the layer where the first touch bridge TB is located: a first metal layer (e.g., a light-shielding metal layer) in which electrodes or lines including a first metal are disposed; a second metal layer (e.g., a gate metal layer) in which electrodes or lines including a second metal are disposed; a third metal layer (e.g., a source-drain metal layer) in which electrodes or lines including a third metal are disposed; and a fourth metal layer (e.g., a metal layer located between the third metal layer and the pixel electrode layer (anode electrode layer)) in which electrodes or lines including a fourth metal are disposed. Here, the first, second, third, and fourth metal layers may be arranged in an upward order, with the first, second, third, and fourth metal layers arranged sequentially. For example, among the first, second, third, and fourth metal layers, the first metal layer may be the lowest layer in the vertical direction closest to the substrate SUB, and the fourth metal layer may be the highest layer in the vertical direction furthest from the substrate SUB.

[0348] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first data line DL1, a second data line DL2, a third data line DL3, and a fourth data line DL4 disposed in the pixel area PA.

[0349] Reference Figure 21 Each of the first data line DL1, the second data line DL2, the third data line DL3, and the fourth data line DL4 may include a third metal different from the first metal and the second metal.

[0350] For example, the first metal may be the same metal as the light-shielding portion located below the driving transistor DRT in the pixel region PA. The second metal may constitute the gate of the driving transistor DRT or the first scan signal line SCL, or it may be the gate metal constituting various signal lines. The third metal may constitute the source and drain of the driving transistor DRT, or it may be the source-drain metal constituting various signal lines. The third metal layer in which the third metal is disposed may be located in a layer higher in the vertical direction than the second metal layer in which the second metal is disposed, and the second metal layer may be located in a layer higher in the vertical direction than the first metal layer in which the first metal is disposed. For example, the third metal layer may be farther away from the substrate SUB than the second metal layer, and the second metal layer may be farther away from the substrate SUB than the first metal layer.

[0351] Reference Figure 21 Each of the first data line DL1, the second data line DL2, the third data line DL3, and the fourth data line DL4 can intersect with the first partial bridge TBls or the second partial bridge TBg of the first touch bridge TB.

[0352] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a reference voltage line RVL disposed in the pixel region PA.

[0353] The reference voltage line RVL can be set in the center region of the pixel area PA (in the vertical or column direction). The reference voltage line RVL can overlap with the display cathode DCE and can be set in the center region of the display cathode DCE (in the vertical or column direction).

[0354] The reference voltage line RVL may include a first metal, and the reference voltage line RVL may cross a second local bridge TBg of the first touch bridge TB.

[0355] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a base voltage line BVL disposed in the pixel region PA and overlapping with the display cathode DCE.

[0356] Reference Figure 21 The base voltage line BVL may include a first local base voltage line BVLg having a second metal, and a second local base voltage line BVLs having a third metal different from the first metal and the second metal.

[0357] Reference Figure 21 The second local base voltage line BVLs may include a double-layer portion that overlaps with the first local base voltage line BVLg and a single-layer portion that does not overlap with the first local base voltage line BVLg.

[0358] Reference Figure 21 The first local base voltage line BVLg may at least partially overlap with the first local bridge TBls of the first touch bridge TB. The double-layer portion of the second local base voltage line BVLs may at least partially overlap with the first local bridge TBls of the first touch bridge TB.

[0359] Reference Figure 21 The first local base voltage line BVLg may not intersect with the first scan signal line SCL, and the second local base voltage line BVLs may intersect with the first scan signal line SCL.

[0360] Reference Figure 21 The base voltage line BVL can be positioned between the first side or edge of the display cathode DCE and the reference voltage line RVL.

[0361] Reference Figure 21 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a drive voltage line DVL disposed in the pixel region PA and overlapping with the display cathode DCE.

[0362] Reference Figure 21 The driving voltage line DVL may include a first local driving voltage line DVLg having a second metal, and a second local driving voltage line DVLs having a third metal different from the first metal and the second metal.

[0363] Reference Figure 21 The second local driving voltage line DVLs may include a double-layer portion that overlaps with the first local driving voltage line DVLg and a single-layer portion that does not overlap with the first local driving voltage line DVLg.

[0364] Reference Figure 21 The first local driving voltage line DVLg may at least partially overlap with the first local bridge TBls of the first touch bridge TB. The double-layer portion of the second local driving voltage line DVLs may at least partially overlap with the first local bridge TBls of the first touch bridge TB.

[0365] In contrast, the first local driving voltage line DVLg may not overlap with the second local bridge TBg of the first touch bridge TB, and the double-layer portion of the second local driving voltage line DVLs may not overlap with the second local bridge TBg of the first touch bridge TB.

[0366] Reference Figure 21 The driving voltage line DVL can be positioned between the second side or edge of the display cathode DCE and the reference voltage line RVL.

[0367] Reference Figure 21In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a base voltage line BVL disposed in the pixel region PA and overlapping with the display cathode DCE and electrically connected to the display cathode DCE.

[0368] Reference Figure 21 The display cathode DCE may include an electrode protrusion DCE_PRT. ​​The first touch cathode TCE1 may include an electrode groove TCE_GRV into which the electrode protrusion DCE_PRT of the display cathode DCE is inserted. The electrode protrusion DCE_PRT of the display cathode DCE and the electrode groove TCE_GRV of the first touch cathode TCE1 may be electrically disconnected from each other.

[0369] Reference Figure 21 The base voltage line BVL may include line protrusions BVLs_PRT that overlap with the electrode protrusions DCE_PRT of the display cathode DCE. The line protrusions BVLs_PRT of the base voltage line BVL may be electrically connected to the electrode protrusions DCE_PRT of the display cathode DCE via the display cathode contact pattern CNT_DCE.

[0370] Reference Figure 21 The driving voltage line DVL can be set in the pixel area PA and overlap with the display cathode DCE. The base voltage line BVL can be set in the pixel area PA, overlap with the display cathode DCE, and be electrically connected to the display cathode DCE.

[0371] Reference Figure 21 The first touch line TL1 can overlap with the display cathode DCE and can be positioned between the drive voltage line DVL and the base voltage line BVL.

[0372] Reference Figure 21 The first data line DL1 may overlap with the display cathode DCE and is located in the pixel area PA.

[0373] Reference Figure 21 The first touch line TL1 can be located between the first data line DL1 and the base voltage line BVL, or between the first data line DL1 and the drive voltage line DVL.

[0374] Figure 22 and 23 This is a cross-sectional view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention. For ease of explanation, Figure 22 and 23 The vertical structure of a local area of ​​the pixel region PA and the first transmission region TA1 is briefly illustrated in the configuration of the preceding figures. Figure 22 and 23 The vertical structure is basically the same as Figure 15 The vertical structure is the same, compared to Figure 15 The configuration differs only in the location of at least one touch line. The following section describes... Figure 22 and 23 When dealing with vertical structures, it will be targeted at... Figure 15 Different configurations or parts of the vertical structure will be discussed.

[0375] For ease of explanation, Figure 22 and 23 The diagram illustrates only the first touch line TL1 among the first touch line TL1, second touch line TL2, third touch line TL3, fourth touch line TL4, fifth touch line TL5, and sixth touch line TL6 that overlap with the display cathode DCE. Figure 22 Vertical structure and Figure 23 The vertical structures differ from each other only in the vertical position of the first touch line TL; that is, they are the same in other parts or configurations.

[0376] Reference Figure 22 and 23 A portion of the display cathode DCE can be configured to extend into the internal space formed within a portion of the first transmission region TA1. The first touch cathode TCE1, the first touch line TL1, the first touch bridge TB, etc., can be disposed within the first transmission region TA1.

[0377] Reference Figure 22 and 23 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a light shield LS located below the driving transistor DRT and overlapping the active layer ACT of the driving transistor DRT. When the active layer ACT of the driving transistor DRT is exposed to light, the channel characteristics of the channel region of the active layer ACT may change. By placing the light shield LS below the active layer ACT, the active layer ACT of the driving transistor DRT is prevented from being exposed to light because light propagating upward from the lower part of the light shield LS is blocked by the light shield LS. The light shield LS may include a first metal. Hereinafter, the first metal is referred to as the light shield metal. The layer in which the light shield LS is located may be referred to as the light shield metal layer. The light shield LS may be disposed in the pixel region PA.

[0378] Reference Figure 22 and 23 The first touch line TL1 may overlap with the display cathode DCE. The first touch line TL1 may be disposed in a first metal layer (light shielding metal layer) in which a light shielding part LS is disposed, or in a fourth metal layer disposed between the third metal layer and the pixel electrode layer.

[0379] Reference Figure 22 and 23In some embodiments, the display panel 110 of the transparent touch display device 100 may have a top-emitting structure, wherein light for image display is emitted onto the upper surface of the encapsulation substrate ENCAP_SUB. For this purpose, the display cathode DCE, the first touch cathode TCE1, and the second touch cathode TCE2 may comprise the same transparent conductive material, and the anode AE ​​may comprise a reflective metallic material.

[0380] The following will refer to Figure 22 and 23 The vertical structure of the display panel 110 is described in more detail.

[0381] Reference Figure 22 and 23 A light-shielding metal layer, serving as the first metal layer, may be disposed on the substrate SUB. Here, the light-shielding metal layer, serving as the first metal layer, may be a layer in which a light-shielding metal serving as the first metal is disposed, and is positioned closest to the substrate SUB.

[0382] Reference Figure 22 and 23 The optical shielding portion LS, etc., can be disposed in the optical shielding metal layer, which serves as the first metal layer. Furthermore, the first partial bridge TBls of the first touch bridge TB and the reference voltage line RVL can be disposed in the optical shielding metal layer. In other words, the optical shielding portion LS, the first partial bridge TBls of the first touch bridge TB, and the reference voltage line RVL can all comprise optical shielding metal.

[0383] Reference Figure 22 and 23 The buffer layer (BUF) can be configured to cover the optical shield (LS). The buffer layer (BUF) can be a single layer or multiple layers.

[0384] Reference Figure 22 and 23 The active layer ACT can be set on the buffer layer BUF, and the gate insulating layer GI can be set such that the gate insulating layer GI covers the active layer ACT.

[0385] Referring to 22 and 23, the gate G and the second local bridge TBg of the first touch bridge TB may be disposed on the gate insulating layer GI. The gate G and the second local bridge TBg of the first touch bridge TB may include gate metal. The gate G and the second local bridge TBg of the first touch bridge TB may be located in the gate metal layer, which serves as the second metal layer. Furthermore, the first local base voltage line BVLg of the base voltage line BVL and the first local drive voltage line DVLg of the drive voltage line DVL may be further disposed in the gate metal layer.

[0386] Reference Figure 22 and 23An interlayer insulating layer (ILD) can be disposed on the gate G, and the source S and drain D, which are source-drain metals serving as a third metal, can be disposed on the ILD. That is, the source S and drain D of the driving transistor DRT can be located within the source-drain metal layer, which is the third metal layer. Furthermore, the second local base voltage line BVLs of the base voltage line BVL and the second local driving voltage line DVLs of the driving voltage line DVL can be further disposed within the source-drain metal layer.

[0387] Reference Figure 22 and 23 The source S can be connected to one side or edge of the active layer ACT through a via in the gate insulating layer GI, and the drain D can be connected to the other side or edge of the active layer ACT through a via in the gate insulating layer GI.

[0388] Reference Figure 22 and 23 The source S can be connected to the optical shield LS via vias formed in the gate insulating layer GI and the buffer layer BUF. Therefore, stable operation of the drive transistor DRT, which is related to the human body effect, can be performed.

[0389] Reference Figure 22 and 23 The first passivation layer PAS1 can be disposed on the source-drain metal layer. The cathode contact pattern CNT_DCE can be disposed on the first passivation layer PAS1. The layer on which the cathode contact pattern CNT_DCE is located is referred to as the fourth metal layer. That is, the cathode contact pattern CNT_DCE may include a fourth metal.

[0390] The cathode contact pattern CNT_DCE is shown to be connected to the second local base voltage line BVLs of the base voltage line BVL via a via in the first passivation layer PAS1. See also... Figures 21 to 23 A portion of the second local base voltage line BVLs that is in contact with or connected to the base voltage line BVL displaying the cathode contact pattern CNT_DCE may be a line protrusion BVLs_PRT of the base voltage line BVL.

[0391] Reference Figure 22 and 23 The second passivation layer PAS2 can be configured such that it covers the display cathode contact pattern CNT_DCE on the first passivation layer PAS1. The metal layer between the first passivation layer PAS1 and the second passivation layer PAS2 can be a fourth metal layer including a fourth metal, and the display cathode contact pattern CNT_DCE can be located in the fourth metal layer.

[0392] Reference Figure 22The first touch line TL1 may overlap with the display cathode DCE and may be located in the fourth metal layer. That is, the first touch line TL1 may be disposed in the fourth metal layer.

[0393] The fourth metal layer may be a metal layer located between the third metal layer (e.g., a source-drain metal layer) in which the source or drain of the driving transistor DRT is disposed and the pixel electrode layer where the anode AE ​​is located. The fourth metal layer may also be a metal layer located between the first passivation layer PAS1 and the second passivation layer PAS2.

[0394] Reference Figure 23 The first touch line TL1 may not be located in the fourth metal layer, but may be located in the first metal layer (light shielding metal layer) in which the light shielding part LS is located.

[0395] As described above, the first touch line TL1 can be located at Figure 22 In the fourth metal layer shown, or located in Figure 23 The first metal layer shown is for illustrative purposes only, and the layer in which the first touch line TL1 is disposed can be varied. For example, the first touch line TL1 can be located in any of the following layers, except for the layer where the first touch bridge TB is located: the first metal layer (light shielding metal layer), the second metal layer (gate metal layer), the third metal layer (source-drain metal layer), and the fourth metal layer (metal layer located between the third metal layer and the pixel electrode layer).

[0396] Reference Figure 22 and 23 The coating layer OC can be disposed on the first passivation layer PAS1 and the second passivation layer PAS2. The lower part of the coating layer OC can have an undercut structure.

[0397] Reference Figure 22 and 23 The anode AE ​​can be disposed in the pixel electrode layer on the coating layer OC. The anode AE ​​can be connected to the source S of the driving transistor DRT using a via formed in the coating layer OC and the first passivation layer PAS1.

[0398] Reference Figure 22 and 23 The dam portion BK may be disposed on the anode AE. The dam portion BK may have an opening through which the top surface of a portion of the anode AE ​​may be exposed. The dam portion BK may be disposed in the pixel region PA and not disposed in the first transmission region TA1.

[0399] Reference Figure 22 and 23The light-emitting layer EL can be disposed in both the pixel region PA and the first transmission region TA1. In the pixel region PA, the light-emitting layer EL can be disposed on the embankment BK and can be configured to contact the top surface of at least a portion of the anode AE ​​in the opening of the embankment BK. In the first transmission region TA1, the light-emitting layer EL can be disposed on the coating layer OC.

[0400] However, the light-emitting layer EL in pixel region PA and the light-emitting layer EL in first transmissive region TA1 may not be connected to each other. For example, the light-emitting layer EL in pixel region PA and the light-emitting layer EL in first transmissive region TA1 may be disconnected from each other at the boundary region between pixel region PA and first transmissive region TA1. For example, the light-emitting layer EL may be disconnected by the undercut structure of coating layer OC at the boundary region between pixel region PA and first transmissive region TA1.

[0401] Reference Figure 22 and 23 The cathode electrode material in the cathode electrode layer CEL can be located on the light-emitting layer EL, and can be disconnected in the boundary region between the pixel region PA and the first transmission region TA1 through the undercut structure of the coating layer OC. As a result, the cathode electrode material located on the light-emitting layer EL in the pixel region PA can be defined as the display cathode DCE, and the cathode electrode material located on the light-emitting layer EL in the first transmission region TA1 can be defined as the first touch cathode TCE1.

[0402] Reference Figure 22 and 23 In the boundary region between the pixel region PA and the first transmission region TA1, the display cathode DCE can be electrically connected to the display cathode contact pattern CNT_DCE using vias formed in the coating layer OC and the second passivation layer PAS2. Therefore, the display cathode DCE can be electrically connected to the second local base voltage line BVLs of the base voltage line BVL via the display cathode contact pattern CNT_DCE.

[0403] Reference Figure 22 and 23 In another boundary region between the pixel region PA and the first transmission region TA1, the first touch cathode TCE1 can be electrically connected to the second local bridge TBg of the first touch bridge TB using a via formed in the coating layer OC and the second passivation layer PAS2.

[0404] Although the first touch line TL1 and the display cathode DCE overlap each other, they can have different electrical states. For example, a voltage with a constant voltage level (e.g., base voltage EVSS) can be applied to the display cathode DCE. A signal with a variable voltage level (e.g., a touch drive signal) can be applied to the first touch line TL1.

[0405] Figure 24 and 25 This is a plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention.

[0406] Reference Figure 24 and 25 In some embodiments, the display panel 110 of the transparent touch display device 100 may include a reference voltage line RVL, which overlaps with the display cathode DCE and is disposed in the central region of the display cathode DCE.

[0407] Reference Figure 24 and 25 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first touch line TL1, a second touch line TL2, and a third touch line TL3 that overlap with the display cathode DCE.

[0408] Reference Figure 24 and 25 The first touch line TL1, the second touch line TL2, and the third touch line TL3 can be set between the first side or edge of the display cathode DCE and the reference voltage line RVL.

[0409] like Figure 24 As shown, the first touch line TL1, the second touch line TL2, and the third touch line TL3 can be disposed between the first side or edge of the display cathode DCE and the reference voltage line RVL; in contrast, no touch line is disposed between the second side or edge of the display cathode DCE and the reference voltage line RVL.

[0410] like Figure 24 As shown, multiple touch lines (TL1, TL2, TL3) overlapping with the display cathode DCE can be positioned on one side or half of the entire area overlapping with the display cathode DCE. This uneven line arrangement can lead to an imbalance in the panel structure, resulting in uneven capacitive coupling, and consequently, reduced touch sensitivity or degraded display performance.

[0411] like Figure 25 As shown, in some embodiments, the display panel 110 of the transparent touch display device 100 may further include a first virtual line DM1, a second virtual line DM2 and a third virtual line DM3 overlapping with the display cathode DCE.

[0412] Reference Figure 25The first touch line TL1, the second touch line TL2, and the third touch line TL3 can be disposed between the first side or edge of the display cathode DCE and the reference voltage line RVL; the first virtual line DM1, the second virtual line DM2, and the third virtual line DM3 can be disposed between the second side or edge of the display cathode DCE and the reference voltage line RVL.

[0413] The first virtual line DM1, the second virtual line DM2, and the third virtual line DM3 may have different electrical states than the first touch line TL1, the second touch line TL2, and the third touch line TL3, or they may have a floating state, or they may not be sensed by the touch driving circuit 160 that senses the first touch line TL1, the second touch line TL2, and the third touch line TL3.

[0414] like Figure 25 As shown, the number of touch lines between the first side or edge of the display cathode DCE and the reference voltage line RVL can be equal to the number of virtual lines between the second side or edge of the display cathode DCE and the reference voltage line RVL.

[0415] like Figure 25 As shown, by additionally setting the first virtual line DM1, the second virtual line DM2 and the third virtual line DM3, the imbalance in the line arrangement can be eliminated.

[0416] Figure 26 In the application of touch shielding structure Figure 21 In the case of display panel 110, a plan view of display panel 110. Figure 27 yes Figure 26 A cross-sectional view of the column line area CLA of the display panel 110. Figure 28 yes Figure 26 A cross-sectional view of the display panel.

[0417] Reference Figures 26 to 28 In some embodiments, the touch shielding structure included in the display panel 110 of the transparent touch display device 100 may further include a first upper touch shielding portion UTS1, which is disposed above the first touch line TL1 and overlaps with at least a portion of the first touch line TL1.

[0418] Reference Figures 26 to 28 The first touch line TL1 and the first upper touch shield UTS1 can overlap with the display cathode DCE.

[0419] Reference Figures 26 to 28In some embodiments, the touch shielding structure included in the display panel 110 of the transparent touch display device 100 may further include: a driving voltage line DVL disposed in the pixel region PA and overlapping with the display cathode DCE; and a base voltage line BVL disposed in the pixel region PA, overlapping with the display cathode DCE and electrically connected to the display cathode DCE.

[0420] Reference Figures 26 to 28 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a reference voltage line RVL disposed in the pixel region PA, overlapping with the display cathode DCE and located in the central region of the display cathode DCE (in the vertical or column direction).

[0421] Reference Figures 26 to 28 The first touch line TL1 and the first upper touch shield UTS1 can be disposed between the driving voltage line DVL and the base voltage line BVL. The first touch line TL1 and the first upper touch shield UTS1 can be located between the base voltage line BVL and the reference voltage line RVL.

[0422] Reference Figures 26 to 28 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a second touch line TL2, which at least partially overlaps with the display cathode DCE.

[0423] Reference Figures 26 to 28 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include display lines disposed between the first touch line TL1 and the second touch line TL2 overlapping with the display cathode DCE, and located in a different layer than the first touch line TL1 and the second touch line TL2. For example, the display lines may be... Figure 26 The first data line is DL1, and in some cases, the display line can be the reference voltage line RVL, the base voltage line BVL, or the drive voltage line DVL.

[0424] Reference Figures 26 to 28 The first touch line TL1 and the second touch line TL2 may be located in the light-shielding metal layer, which is the first metal layer closest to the substrate SUB, and the first data line DL1 may be located in the source-drain metal layer, which is the third metal layer located in a layer higher than the first metal layer in the vertical direction.

[0425] Reference Figures 26 to 28 In some embodiments, the touch shielding structure included in the display panel 110 of the transparent touch display device 100 may further include a second upper touch shielding portion UTS2, which is disposed above the second touch line TL2 and overlaps with at least a portion of the second touch line TL2.

[0426] Reference Figures 26 to 28 In some embodiments, the display panel 110 of the transparent touch display device 100 may include first to sixth upper touch shields UTS1 to UTS6, which overlap with first to sixth touch lines TL1 to TL6 that overlap with the display cathode DCE, respectively.

[0427] Reference Figure 28 In some embodiments, the display panel 110 of the transparent touch display device 100 may further include a side touch shield STS disposed adjacent to the first touch line TL1.

[0428] Reference Figure 28 In some embodiments, the side touch shield STS in the display panel 110 of the transparent touch display device 100 may include the same material as the first touch line TL1. For example, the side touch shield STS and the first touch line TL1 may be disposed in a light-shielding metal layer that serves as a first metal layer.

[0429] Reference Figure 28 In the first side or edge of the first touch line TL1 and the second side or edge opposite to the first side or edge, the side touch shield STS can be configured to be adjacent to the second side or edge that is closer to the anode AE ​​than the first side or edge. Thus, since the side touch shield STS is disposed between the anode AE ​​and the first touch line TL1, coupling noise that may form between the anode AE ​​and the first touch line TL1 can be prevented by the side touch shield STS.

[0430] Figure 29 This is another plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention. It should be noted that... Figure 29 The structure in the plan view and Figure 21 The structures in the plan views are roughly the same. Only Figure 29 The position of the touch line in the structure and Figure 21 The position of the touch line in the structure is slightly different. The following text will mainly focus on the differences. Figure 21 The structural features of the structure Figure 29 The structure will be discussed.

[0431] Reference Figure 29 The first touch line TL1 may include a first metal. For example, the first touch line TL1 may be disposed in a light-shielding metal layer that serves as the first metal layer.

[0432] Reference Figure 29In the first partial bridge TBls and the second partial bridge TBg of the first touch bridge TB, the first partial bridge TBls of the first touch bridge TB can be disposed in the light-shielding metal layer that serves as the first metal layer. Therefore, the first partial bridge TBls of the first touch bridge TB disposed in the first metal layer will not intersect or overlap with the first touch line TL1 disposed in the first metal layer.

[0433] Reference Figure 29 In the first partial bridge TBls and the second partial bridge TBg of the first touch bridge TB, the second partial bridge TBg can be disposed in the gate metal layer, which serves as the second metal layer. Therefore, the second partial bridge TBg of the first touch bridge TB disposed in the second metal layer can cross and overlap with the first touch line TL1 disposed in the first metal layer.

[0434] Reference Figure 29 The first to sixth touch lines TL1 to TL6 can be configured to overlap with the display cathode DCE.

[0435] Reference Figure 29 The first to third touch lines TL1 to TL3 may overlap with a portion of the display cathode DCE that extends into the internal space of the first transmission region TA1. Therefore, it can be considered that the first to third touch lines TL1 to TL3 are disposed in the first transmission region TA1.

[0436] Reference Figure 29 The fourth to sixth touch lines TL4 to TL6 may overlap with a portion of the display cathode DCE that extends into the interior space of the second transmission region TA2. Therefore, it can be considered that the fourth to sixth touch lines TL4 to TL6 are disposed in the second transmission region TA2.

[0437] Reference Figure 29 The reference voltage line RVL can be set in the pixel area PA, overlapping with the display cathode DCE, and located in the central area of ​​the display cathode DCE (in the vertical or column direction).

[0438] Reference Figure 29 The base voltage line BVL can be disposed in the pixel region PA, overlapping with a first portion of the display cathode DCE, and electrically connected to the display cathode DCE. The first portion of the display cathode DCE can be a part of the display cathode DCE and corresponds to a local area of ​​the first pixel region PA adjacent to the first transmission region TA1.

[0439] Reference Figure 29The driving voltage line DVL can be located in the pixel region PA and is configured to overlap with a second portion of the display cathode DCE. The second portion of the display cathode DCE can be a part of the display cathode DCE and corresponds to a local area of ​​the first pixel region PA adjacent to the second transmission region TA2.

[0440] Reference Figure 29 The first to fourth data lines DL1 to DL4 can be configured to overlap with the display cathode DCE. The first data line DL1 and the second data line DL2 of the first to fourth data lines DL1 to DL4 can be located between the reference voltage line RVL and the base voltage line BVL, and the third data line DL3 and the fourth data line DL4 can be located between the reference voltage line RVL and the drive voltage line DVL.

[0441] Reference Figure 29 The first touch line TL1 can be configured to overlap with the display cathode DCE. The first touch line TL1 can be located between the edge of the display cathode DCE and the base voltage line BVL, or between the edge of the display cathode DCE and the drive voltage line DVL.

[0442] Reference Figure 29 For example, the first to third touch lines TL1 to TL3 can be located between the edge of the display cathode DCE and the base voltage line BVL, and the fourth to sixth touch lines TL4 to TL6 can be located between the other edge of the display cathode DCE and the drive voltage line DVL.

[0443] Reference Figure 29 The display cathode DCE may include an electrode protrusion DCE_PRT, and the first touch cathode TCE1 may include an electrode groove TCE_GRV, into which the electrode protrusion DCE_PRT of the display cathode DCE is inserted.

[0444] Reference Figure 29 The base voltage line BVL may include line protrusions BVLs_PRT that overlap with the electrode protrusions DCE_PRT of the display cathode DCE. The line protrusions BVLs_PRT of the base voltage line BVL may be electrically connected to the electrode protrusions DCE_PRT of the display cathode DCE.

[0445] Reference Figure 29 The protrusions BVLs_PRT of the base voltage line BVL can intersect with the first to third touch lines TL1 to TL3. The first to third touch lines TL1 to TL3 can also intersect with the first scan signal line SCL.

[0446] Reference Figure 29The first to third touch lines TL1 to TL3 may include a light-shielding metal as a first metal, and the line protrusions BVLs_PRT of the base voltage line BVL may include source-drain metal as a third metal. Therefore, even if the line protrusions BVLs_PRT of the base voltage line BVL intersect with the first to third touch lines TL1 to TL3, the line protrusions BVLs_PRT of the base voltage line BVL can be electrically disconnected from the first to third touch lines TL1 to TL3.

[0447] Figure 30 This is another plan view of the display panel 110 of the transparent touch display device 100 according to various aspects of the present invention. It should be noted that... Figure 30 Vertical structures in a plan view and Figure 23 The vertical structures in the plan view are roughly the same. Only Figure 30 The position of the touch line in the vertical structure and Figure 23 The position of the touch line in the vertical structure is slightly different. The following text will mainly focus on the differences. Figure 23 The structural features of the structure Figure 30 The structure will be discussed.

[0448] Reference Figure 30 The first touch line TL1 may be disposed in, for example, a first metal layer (light shielding metal layer) in which a light shielding part LS is disposed.

[0449] In another example, the first touch line TL1 may be located in a fourth metal layer, different from the first metal layer. The fourth metal layer may be a metal layer located between the third metal layer (source-drain metal layer) where the source or drain of the driving transistor DRT is located and the pixel electrode layer where the anode AE ​​is located.

[0450] Refer to together Figure 30 and Figure 29 The first touch line TL1 may overlap with the display cathode DCE and is disposed in the first transmission region TA1. In contrast, Figure 23 The first touch line TL1 can overlap with the display cathode DCE and is located in the pixel area PA.

[0451] Figure 31 In the application of touch shielding structure Figure 29 In the case of display panel 110, a plan view of display panel 110. Figure 32 yes Figure 31 A cross-sectional view of the column line area of ​​the display panel 110. Figure 33 yes Figure 31 A cross-sectional view of the display panel 110.

[0452] Reference Figures 31 to 33In some embodiments, the touch shielding structure included in the display panel 110 of the transparent touch display device 100 may include a first upper touch shielding part UTS1, which is disposed above the first to third touch lines TL1 to TL3.

[0453] Reference Figures 31 to 33 In some embodiments, the touch shielding structure included in the display panel 110 of the transparent touch display device 100 may further include: a second upper touch shielding portion UTS2 disposed on the fourth to sixth touch lines TL4 to TL6.

[0454] Reference Figures 31 to 33 The first upper touch shield UTS1 may overlap with the first to third touch lines TL1 to TL3, which are classified into the first group. The second upper touch shield UTS2 may overlap with the fourth to sixth touch lines TL4 to TL6, which are classified into the second group.

[0455] Reference Figures 31 to 33 The first to third touch lines TL1 to TL3 and the first upper touch shield UTS1 can overlap with the display cathode DCE. (Refer to...) Figures 31 to 33 The fourth to sixth touch lines TL4 to TL6 and the second upper touch shield UTS2 can overlap with the display cathode DCE.

[0456] Reference Figure 31 In some embodiments, the display panel 110 of the transparent touch display device 100 may include: a driving voltage line DVL disposed in the pixel region PA and overlapping with the display cathode DCE; and a base voltage line BVL disposed in the pixel region PA, overlapping with the display cathode DCE and electrically connected to the display cathode DCE.

[0457] Reference Figure 31 The first touch line TL1 and the first upper touch shield UTS1 can be disposed between the base voltage line BVL and the first side or edge of the display cathode DCE, or between the drive voltage line DVL and the second side or edge of the display cathode DCE.

[0458] Reference Figure 31 In some embodiments, in the display panel 110 of the transparent touch display device 100, the first upper touch shield UTS1 and the second upper touch shield UTS2 may overlap with at least a portion of the display cathode DCE.

[0459] Reference Figure 31Multiple touch lines TL1 to TL6 that overlap with the display cathode DCE can be classified into a first group and a second group. All two or more touch lines (TL1, TL2, TL3) classified into the first group of multiple touch lines TL1 to TL6 can overlap with the first upper touch shield UTS1. All two or more touch lines (TL4, TL5, TL6) classified into the second group of multiple touch lines TL1 to TL6 can overlap with the second upper touch shield UTS2.

[0460] Reference Figure 31 Two or more touch lines (TL1, TL2, TL3) classified as Group 1 may be positioned between the base voltage line BVL and the first side or edge of the display cathode DCE. Two or more touch lines (TL4, TL5, TL6) classified as Group 2 may be positioned between the drive voltage line DVL and the second side or edge of the display cathode DCE.

[0461] Reference Figure 31 and 32 The line width Ws of the first upper touch shield UTS1 can be greater than the width Wt of the area in which two or more touch lines (TL1, TL2, TL3) classified as the first group are provided. The line width of the second upper touch shield UTS2 can be greater than the width Wt of the area in which two or more touch lines (TL4, TL5, TL6) classified as the second group are provided.

[0462] Reference Figure 33 In some embodiments, the side touch shield STS in the display panel 110 of the transparent touch display device 100 may include the same material as the first touch line TL1. For example, the side touch shield STS and the first touch line TL1 may be disposed in a light-shielding metal layer that serves as a first metal layer.

[0463] Reference Figure 33 In the first side or edge of the first touch line TL1 and the second side or edge opposite to the first side or edge, the side touch shield STS can be configured to be adjacent to the second side or edge that is closer to the anode AE ​​than the first side or edge. Thus, since the side touch shield STS is disposed between the anode AE ​​and the first touch line TL1, coupling noise that may form between the anode AE ​​and the first touch line TL1 can be prevented by the side touch shield STS.

[0464] According to the embodiments described herein, a transparent touch display device may be provided, comprising a display panel with an integrated touch sensor that has excellent self-illumination properties and high transmittance and is capable of accurate touch sensing.

[0465] According to the embodiments described herein, a transparent touch display device may be provided, wherein the touch sensor is configured to include two or more cathodes that are separated from each other in a cathode electrode layer.

[0466] According to the embodiments described herein, a transparent touch display device can be provided, wherein a touch sensor is integrated into the display panel without affecting the transmittance of the display panel.

[0467] According to the embodiments described herein, a transparent touch display device can be provided that can reduce the complexity of the panel manufacturing process and reduce the thickness of the display panel.

[0468] According to the embodiments described herein, a transparent touch display device can be provided in which, when the light-emitting element and the touch sensor are disposed in the display panel, the touch line is disposed in a metal layer furthest from the anode of the light-emitting element, thereby minimizing the impact of the light-emitting element's actuation on touch sensing.

[0469] According to the embodiments described herein, a transparent touch display device can be provided that can reduce or prevent the occurrence of parasitic capacitance in touch lines disposed on a display panel.

[0470] According to the embodiments described herein, a transparent touch display device can be provided, which, by employing a touch shielding structure capable of reducing or eliminating coupling noise generated between one or more touch lines and one or more surrounding display driver-related patterns, can reduce or eliminate the influence between the display driver and the touch driver, thereby achieving accurate touch sensing and producing high image quality.

[0471] The above description has been provided to enable any person skilled in the art to acquire and use the technical concept of the invention, and has been provided in the context of a specific application and its requirements. Various modifications, additions, and substitutions to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the invention. The above description and drawings are provided merely as examples of the technical concept of the invention for illustrative purposes. That is, the disclosed embodiments are intended to illustrate the scope of the technical concept of the invention. Therefore, the scope of the invention is not limited to the embodiments shown, but conforms to the widest scope consistent with the claims. The scope of protection of the invention should be interpreted based on the appended claims, and all technical concepts within the equivalent scope of the claims should be interpreted as being included within the scope of the invention.

Claims

1. A transparent touch display device, comprising: A substrate, the substrate including a pixel region, a first transmissive region located on a first side of the pixel region, and a second transmissive region located on a second side of the pixel region; A driving transistor is disposed in the pixel region; An anode is disposed in the pixel region, above the driving transistor, and electrically connected to the source or drain of the driving transistor; The light-emitting layer located on the anode; The display cathode is located on the light-emitting layer; A first touch cathode is disposed in the first transmission region and located on a first side of the display cathode; The second touch cathode is disposed in the second transmission region and located on the second side of the display cathode; A first touch line, wherein the first touch line is electrically connected to at least one of the first touch cathode and the second touch cathode; as well as A first upper touch shield is disposed above the first touch line and overlaps with at least a portion of the first touch line. The display cathode includes an electrode protrusion, and the first touch cathode includes an electrode groove in which the electrode protrusion of the display cathode is inserted. The electrode protrusion and the electrode groove are electrically disconnected from each other, and the electrode protrusion extends into the interior space of the first transmission region.

2. The transparent touch display device according to claim 1, wherein the first upper touch shield is disposed in a metal layer located between the source-drain metal layer and the pixel electrode layer, wherein the source or drain of the driving transistor is disposed in the source-drain metal layer, and the anode is disposed in the pixel electrode layer.

3. The transparent touch display device according to claim 1, wherein the first touch line and the first upper touch shield overlap with the first touch cathode.

4. The transparent touch display device according to claim 3 further includes a plurality of touch lines overlapping the first touch cathode. The plurality of touch lines include the first touch line, and the first upper touch shield overlaps entirely with the plurality of touch lines. The line width of the first upper touch shield is greater than the width of the area in which the multiple touch lines are provided.

5. The transparent touch display device according to claim 1, wherein the first touch line and the first upper touch shield overlap with the first touch cathode.

6. The transparent touch display device according to claim 5, further comprising: A driving voltage line is disposed in the pixel region and overlaps with the display cathode; as well as A base voltage line is disposed in the pixel region, overlaps with the display cathode, and is electrically connected to the display cathode. The first touch line and the first upper touch shield are disposed between the driving voltage line and the base voltage line.

7. The transparent touch display device according to claim 6, further comprising: The second touch line overlaps with the display cathode; The display line is disposed between the first touch line and the second touch line, and is located in a different layer than the first touch line and the second touch line; as well as The second upper touch shield is disposed above the second touch line and overlaps with the second touch line.

8. The transparent touch display device according to claim 5, further comprising: A driving voltage line is disposed in the pixel region and overlaps with the display cathode; as well as A base voltage line is disposed in the pixel region, overlaps with the display cathode, and is electrically connected to the display cathode. The first touch line and the first upper touch shield are disposed between the base voltage line and the first edge of the display cathode, or between the driving voltage line and the second edge of the display cathode.

9. The transparent touch display device according to claim 8, further comprising: The second upper touch shield is different from the first touch line; as well as Multiple touch lines overlapping with the display cathode, The plurality of touch lines are classified into a first group and a second group. All two or more touch lines classified into the first group overlap with the first upper touch shield, and all two or more touch lines classified into the second group overlap with the second upper touch shield. The line width of the first upper touch shield is greater than the width of the area in which two or more touch lines classified as the first group are provided, and the line width of the second upper touch shield is greater than the width of the area in which two or more touch lines classified as the second group are provided.

10. The transparent touch display device according to claim 1, further comprising a side touch shielding portion disposed adjacent to the first touch line, The side touch shield comprises the same material as the first touch line.

11. The transparent touch display device of claim 10, wherein, on a first side or first edge of the first touch line and on a second side or second edge opposite to the first side or first edge, the side touch shield is configured to be adjacent to the second side or second edge that is closer to the anode than the first side or first edge.

12. The transparent touch display device according to claim 1, wherein the first touch line is disposed in the metal layer closest to the substrate.

13. The transparent touch display device according to claim 1, further comprising a first touch bridge, the first touch bridge spanning the pixel region and electrically connecting the first touch cathode and the second touch cathode. The first touch bridge intersects with and is electrically connected to the first touch line.

14. The transparent touch display device according to claim 13, wherein the first touch bridge comprises a first partial bridge having a first metal and a second partial bridge having a second metal different from the first metal. The first local bridge and the second local bridge are located in different layers and are electrically connected to each other.

15. The transparent touch display device according to claim 14, further comprising a first data line, a second data line, a third data line, and a fourth data line disposed in the pixel region. Each of the first data line, the second data line, the third data line, and the fourth data line includes a third metal that is different from the first metal and the second metal. Each of the first data line, the second data line, the third data line, and the fourth data line intersects with either the first partial bridge or the second partial bridge of the first touch bridge.

16. The transparent touch display device according to claim 14, further comprising a reference voltage line disposed in the pixel region. The reference voltage line includes the first metal and intersects with a second partial bridge of the first touch bridge.

17. The transparent touch display device according to claim 14, further comprising a base voltage line disposed in the pixel region and overlapping the display cathode. The base voltage line includes a first local base voltage line having the second metal and a second local base voltage line having a third metal different from the first metal and the second metal. The second local base voltage line includes a double-layer portion that overlaps with the first local base voltage line and a single-layer portion that does not overlap with the first local base voltage line. The first local base voltage line overlaps with the first local bridge of the first touch bridge, and the double-layer portion of the second local base voltage line overlaps with the first local bridge of the first touch bridge.

18. The transparent touch display device according to claim 1, further comprising a light shielding portion, the light shielding portion being disposed in the pixel region, located below the driving transistor and overlapping the active layer of the driving transistor. The light shielding portion and the first touch line are made of the same material.

19. The transparent touch display device according to claim 1, further comprising a lower layer located below the display cathode, The lower layer has an undercut structure, in which the lower portion of the lower layer is recessed inward or inward and downward. At a point in the lower layer where the undercut structure is present, the display cathode and the first touch cathode are electrically disconnected from each other. At another point in the lower layer where the undercut structure is present, the display cathode and the second touch cathode are electrically disconnected from each other.

20. The transparent touch display device of claim 14, wherein the first touch line does not intersect the first partial bridge, and the first touch line intersects the second partial bridge.

21. The transparent touch display device according to claim 13, further comprising a light shielding portion disposed in the pixel region, located below the driving transistor and overlapping the active layer of the driving transistor. in, The first touch line is located in any one of the layers other than the layer where the first touch bridge is located, in a first metal layer in which the light shield is disposed, a second metal layer in which the gate of the driving transistor is disposed, a third metal layer in which the source or drain of the driving transistor is located, and a fourth metal layer between the third metal layer and the pixel electrode layer in which the anode is located.

22. The transparent touch display device according to claim 21, wherein, among the first metal layer, the second metal layer, the third metal layer, and the fourth metal layer, the first metal layer is the lowest layer closest to the substrate, and the fourth metal layer is the highest layer furthest from the substrate.

23. The transparent touch display device according to claim 1, wherein the maximum separation distance between the first touch cathode and the substrate and the maximum separation distance between the second touch cathode and the substrate are both shorter than the maximum separation distance between the display cathode and the substrate.

24. The transparent touch display device according to claim 1, further comprising a virtual line overlapping the second touch cathode, The virtual line has a different electrical state than the first touch line.

25. The transparent touch display device according to claim 1, further comprising: A reference voltage line is disposed in the pixel region, overlaps with the display cathode, and is located in the central region of the display cathode; And the virtual lines overlapping with the display cathode, The first touch line is disposed between the first side of the display cathode and the reference voltage line, and the virtual line is disposed between the second side of the display cathode and the reference voltage line. The virtual line has a different electrical state than the first touch line.

26. A transparent touch display device, comprising: A substrate, the substrate including a pixel region, a first transmissive region located on a first side of the pixel region, and a second transmissive region located on a second side of the pixel region; The display cathode to which the base voltage for display driving is applied; A first touch cathode is located on a first side of the display cathode and comprises the same material as the display cathode; The second touch cathode is located on a second side of the display cathode and comprises the same material as the display cathode; A first touch bridge, which spans the pixel region and is electrically connected to the first touch cathode and the second touch cathode; A first touch line, which intersects with the first touch bridge and is electrically connected to at least one of the first touch cathode and the second touch cathode; as well as A first upper touch shield is disposed above the first touch line and overlaps with at least a portion of the first touch line. The display cathode includes an electrode protrusion, and the first touch cathode includes an electrode groove in which the electrode protrusion of the display cathode is inserted. The electrode protrusion and the electrode groove are electrically disconnected from each other, and the electrode protrusion extends into the interior space of the first transmission region.

27. The transparent touch display device of claim 26, wherein the first touch bridge comprises a first partial bridge having a first metal and a second partial bridge having a second metal different from the first metal, the second metal being disposed further away from the substrate than the first metal.

28. The transparent touch display device of claim 27, wherein the first touch line does not intersect the first partial bridge, and the first touch line intersects the second partial bridge.

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