Display device

Abstract

Disclosed is a display device including: a substrate including a display area and a non-display area; a light emitting element layer disposed in the display area on the substrate; an encapsulation layer disposed on the light emitting element layer; a touch sensing layer disposed on the encapsulation layer; a color filter layer disposed on the touch sensing layer; a gate driving unit disposed in the non-display area on the substrate; a dam disposed in the non-display area on the substrate and surrounding the display area; and a panel crack detector disposed at an edge portion of the substrate and in the non-display area, in which the dam is between the gate driving unit and the panel crack detector.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2024-0028185 filed on February 27, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device, and more particularly, to a display device including a touch electrode. Background Art

[0004] With the advent of the information age, the field of display devices that visually express electronic information signals has been rapidly developed, and research continues to improve the performance of various display devices, such as small thickness, light weight, and low power consumption.

[0005] Examples of such a display device may include a liquid crystal display (LCD), an electrowetting display (EWD), an organic light emitting display (OLED), and the like.

[0006] Among various display devices, electroluminescent displays (ELDs) are self-luminous and, unlike LCDs, do not require a separate light source. Consequently, ELDs can be manufactured with reduced weight and thickness. Because ELDs operate at low voltages, they offer advantages not only in terms of power consumption but also in terms of color reproduction, response speed, viewing angle, and contrast ratio (CR). Therefore, they are expected to be utilized in various fields.

[0007] In order to provide various functions to a user, a touch display device is provided with a touch sensing function for recognizing a finger touch or a pen touch on a display panel and performing input processing based on the recognized touch. Summary of the Invention

[0008] One object to be achieved by the present disclosure is to provide a display device having improved freedom in arranging touch electrodes.

[0009] Another object to be achieved by the present disclosure is to provide a display device with enhanced touch sensing performance.

[0010] The objects of the exemplary embodiments of the present disclosure are not limited to the above objects, and other objects not mentioned above may be clearly understood by those skilled in the art from the following description.

[0011] Additional details of exemplary embodiments are included in the detailed description and the accompanying drawings.

[0012] In a display device according to an exemplary embodiment of the present disclosure, a touch sensing unit is disposed between an encapsulation layer and a color filter layer. Furthermore, the touch electrodes of the touch sensing unit are disposed below the black matrix of the color filter layer. This improves the degree of freedom in arranging the touch electrodes.

[0013] In the display device according to the exemplary embodiment of the present disclosure, the width of the touch electrode line of the touch electrode is increased within the range of the width of the black matrix. Therefore, a high metal density can be achieved. Therefore, the touch sensing performance can be enhanced.

[0014] In a display device according to an exemplary embodiment of the present disclosure, a bridge electrode having a relatively lower metal density than the touch electrode is disposed on the touch electrode. This can suppress the occurrence of arcing between the inorganic layer covering the touch sensing unit and the touch electrode. Consequently, touch sensing performance can be stably enhanced.

[0015] In the display device according to the exemplary embodiment of the present disclosure, the dummy electrode is partially provided on the touch electrode, thereby enhancing the touch sensing performance.

[0016] The effects of the present disclosure are not limited to the aforementioned effects, and other effects not mentioned above will be apparently understood by those having ordinary skill in the art from the following description.

[0017] The objectives to be achieved by the present disclosure, the devices for achieving the objectives, and the effects of the present disclosure described above do not specifically describe the essential features of the claims, and therefore, the scope of the claims is not limited to the disclosure of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other aspects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a block diagram of a display device according to an exemplary embodiment of the present disclosure;

[0020] Figure 2 is a plan view of a display panel according to an exemplary embodiment of the present disclosure;

[0021] Figure 3 is an exploded perspective view illustrating an arrangement structure of a touch sensing layer in a display device according to an exemplary embodiment of the present disclosure;

[0022] Figure 4 is a plan view illustrating a structure of a touch sensing unit provided on a touch sensing layer according to an exemplary embodiment of the present disclosure;

[0023] Figure 5 It is along Figure 3 A sectional view taken along line II';

[0024] Figure 6 is a plan view illustrating an overlapping structure of a bank and a touch electrode in a display device according to an exemplary embodiment of the present disclosure;

[0025] Figure 7 is a plan view illustrating an overlapping structure of a black matrix and a touch electrode in a display device according to an exemplary embodiment of the present disclosure;

[0026] Figure 8 It is along Figure 4 , and illustrates an example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure;

[0027] Figure 9 It is along Figure 4 A cross-sectional view taken along line II-II' of FIG. 1 shows another example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure;

[0028] Figure 10 is a plan view illustrating an overlapping structure of touch electrodes and dummy electrodes in a display device. DETAILED DESCRIPTION

[0029] The advantages and features of the present disclosure and methods for achieving the advantages and features will become apparent by reference to the exemplary embodiments described in detail below in conjunction with the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments disclosed herein and may be implemented in various forms. The exemplary embodiments are provided by way of example only so that those skilled in the art can fully understand the disclosure and scope of the present disclosure.

[0030] The shapes, sizes, ratios, angles, quantities, etc. illustrated in the drawings for describing exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. The same reference numerals generally represent the same elements throughout the specification. In addition, in the following description of the present disclosure, detailed explanations of known related arts may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. Terms such as "including," "having," and "consisting of" used herein are generally intended to allow the addition of other components unless the terms are used together with the term "only." Any reference to the singular may include the plural unless otherwise expressly stated.

[0031] Even if not explicitly stated, the components are interpreted as including the ordinary error range.

[0032] When terms such as "on," "above," "below," and "adjacent" are used to describe a positional relationship between two parts, one or more parts may be located between the two parts unless the terms are used with the terms "immediately" or "directly."

[0033] When an element or layer is referred to as being “on” another element or layer, it can be directly on the other element or layer, or intervening elements or layers may be present therebetween.

[0034] Although the terms "first," "second," and the like are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from other components. Thus, a first component mentioned below may be a second component in the technical concept of the present disclosure. The same reference numerals generally denote the same elements throughout the specification.

[0035] Like reference numbers generally refer to like elements throughout the specification.

[0036] The size and thickness of each component illustrated in the drawings are illustrated for convenience of explanation and are not limited to the size and thickness of the components illustrated in the embodiments of the present disclosure.

[0037] The features of the various embodiments of the present disclosure may be partially or completely coupled or combined with each other, and may be technically related and operated in various ways, and the embodiments may be implemented independently of each other or in association with each other.

[0038] Additional details of exemplary embodiments are included in the detailed description and the accompanying drawings.

[0039] Figure 1 is a block diagram of a display device according to an exemplary embodiment of the present disclosure.

[0040] Figure 2 is a plan view of a display panel according to an exemplary embodiment of the present disclosure.

[0041] Reference Figure 1 and Figure 2 , the display device 100 according to an exemplary embodiment of the present disclosure may include an image processor 151 , a timing controller 152 , a data driver 153 , a gate driver 154 , and a display panel DP.

[0042] The image processor 151 outputs a driving signal including a data signal DATA and a data enable signal DES supplied from the outside. The image processor 151 may output a driving signal including one or more of a vertical synchronization signal, a horizontal synchronization signal, and a clock signal in addition to the data enable signal DES.

[0043] The timing controller 152 is supplied with the data signal DATA and driving signals including the data enable signal DES from the image processor 151. The timing controller 152 outputs a gate timing control signal GDC for controlling the operation timing of the gate driver 154 based on the driving signal. The timing controller 152 outputs the data signal DATA supplied from the image processor 151 and a data timing control signal DDC for controlling the operation timing of the data driver 153.

[0044] The data driver 153 samples and latches the data signal DATA supplied from the timing controller 152 in response to the data timing control signal DDC supplied from the timing controller 152. The data driver 153 then converts the data signal into a gamma reference voltage and outputs the converted gamma reference voltage. The data driver 153 outputs the data signal DATA through the data lines DL1 to DLn.

[0045] The gate driver 154 may output a gate signal while shifting a level of a gate voltage in response to the gate timing control signal GDC supplied from the timing controller 152. In addition, the gate driver 154 outputs the gate signal through the gate lines GL1 to GLm.

[0046] In order to provide a touch sensing function, the display device 100 according to an exemplary embodiment of the present disclosure may further include a touch sensing unit including a plurality of touch electrodes. In addition, the display device 100 may include a touch sensing circuit that supplies a touch drive signal to the touch sensing unit, detects a touch sensing signal from the touch sensing unit, and senses whether a user has touched the display and the touch position (coordinates).

[0047] For example, the touch sensing circuit may include a touch drive circuit configured to supply a touch drive signal to the touch sensing unit and detect a touch sensing signal from the touch sensing unit. In addition, the touch sensing circuit may include a touch controller configured to sense the presence and / or touch position of a user's touch based on the touch sensing signal detected by the touch drive circuit. The touch drive circuit and the touch controller may be implemented as separate components or integrated into a single component as needed.

[0048] Meanwhile, each of the data driver 153, the gate driver 154, and the touch driving circuit may be implemented as one or more integrated circuits. Considering the electrical connection with the display panel DP, each of the data driver 153, the gate driver 154, and the touch driving circuit may be implemented by a COG (Chip on Glass) type, a COF (Chip on Film) type, a TCP (Tape Carrier Package) type, or the like.

[0049] In addition, each of the timing controller 152, data driver 153, and gate driver 154 for display driving and the circuit elements for touch sensing can be implemented as one or more separate components. In some cases, at least one of the elements 152, 153, and 154 for display driving and at least one of the circuit elements for touch sensing can be functionally integrated into one or more components. For example, the data driver 153 and the touch driving circuit can be integrated into one or more integrated circuit chips. In the case where the data driver 153 and the touch driving circuit are integrated into two or more integrated circuit chips, each of the two or more integrated circuit chips can have both data driving functionality and touch driving functionality.

[0050] The display panel DP may include a plurality of pixels P. Each of the plurality of pixels P emits light in response to a data signal and a gate signal supplied from the data driver 153 and the gate driver 154 to display an image.

[0051] Each pixel P may be composed of multiple sub-pixels SP. For example, each pixel P may include three or more sub-pixels SP configured to emit light of different colors within different wavelength ranges. For example, in the display device 100 according to an exemplary embodiment of the present disclosure, each pixel P may include sub-pixels SP that emit red light, green light, and blue light, respectively. However, the number of sub-pixels SP included in each pixel P is not limited. For example, in addition to the sub-pixels SP that emit red light, green light, and blue light, respectively, each pixel SP may further include a sub-pixel SP that emits white light.

[0052] A plurality of gate lines GL1 to GLm extending in a first direction and a plurality of data lines DL1 to DLn extending in a second direction different from the first direction are disposed on the display panel DP and intersect each other. Subpixels SP are defined at respective intersections of the gate lines and the data lines on the display panel DP.

[0053] Reference Figure 2 , the display panel DP includes a substrate 110 .

[0054] The substrate 110 is a component for supporting various components included in the display device 100. The substrate 110 can be made of an insulating material. In addition, the substrate 110 can be made of a transparent material. In addition, the substrate 110 can be a rigid substrate, or a flexible substrate that can be bent, folded, rolled, etc. The substrate 110 can be made of glass or a flexible plastic material. For example, when the substrate 110 is made of polyimide (PI) which is a plastic material, the manufacturing process of the display device 100 is performed in a state where a support substrate made of glass is provided below the substrate 110. After the manufacturing process of the display device 100 is completed, the support substrate can be released.

[0055] like Figure 2 As shown, the substrate 110 of the display panel DP may include a display area DA and a non-display area NA disposed outside the display area DA and not disposed with a plurality of pixels P. The non-display area NA is adjacent to the display area DA and may be disposed at a portion further outside the display area DA.

[0056] The display area DA of the substrate 110 may refer to a region where pixels P are provided and an image is displayed. In the display area DA, a plurality of sub-pixels SP1, SP2, and SP3 may be provided and may constitute a pixel P.

[0057] The non-display area NA of the substrate 110 may include a peripheral area surrounding the display area DA, a bending area BA extending from one side of the peripheral area and bent, and a pad area PA extending from the bending area BA. Figure 2 A state before the substrate 110 is bent is shown.

[0058] The non-display area NA of the substrate 110 is an area where various wiring and circuits for driving the sub-pixels SP1, SP2, and SP3 arranged in the display area DA are provided. The non-display area NA is an area where no image is displayed, and therefore, the non-display area NA does not need to be viewed from the front side of the display panel DP. Therefore, a portion of the non-display area NA of the substrate 110 can be curved toward the rear surface of the display panel DP. For example, the edge of the substrate 110 can be curved in a predetermined curvature in the rear direction of the display panel DP. In this case, the pad area PA can be arranged to overlap with the display area DA on the rear surface of the display panel DP. Therefore, it is possible to ensure an area for wiring and driving circuits and reduce the non-display area NA.

[0059] The pad unit 114 may be provided in the pad area PA of the substrate 110. The pad unit 114 may be a metal pattern bonded with an external module such as a flexible printed circuit board (FPCB) and a chip on film (COF). Figure 2 It is shown that the pad unit 114 is provided at one side of the non-display area NA, but the shape and arrangement of the pad unit 114 are not limited thereto.

[0060] In addition, the connection line 116 may be provided in a portion of the non-display area NA of the substrate 110. For example, the connection line 116 may be provided in a portion of the peripheral area of ​​the substrate 110 adjacent to the bending area BA.

[0061] The connection line 116 can transmit a signal (e.g., a voltage) from an external module connected to the pad unit 114 to the display area DA or a circuit unit (e.g., the gate driver unit 112 included in the gate driver 154). The gate driver unit 112 supplies gate signals to the thin film transistors of the pixel driver circuit and includes various gate driver circuits. In the display device 100 according to an exemplary embodiment of the present disclosure, the gate driver unit 112 can be provided in a gate-in-panel (GIP) structure in which the gate driver circuit is directly provided on the substrate 110.

[0062] Various signals and voltages, such as gate signals, data signals, high potential voltages, and low potential voltages, can be transmitted through the connection lines 116. The connection lines 116 can be classified into power connection lines and / or signal connection lines according to the voltage and / or signal to be transmitted. The power connection lines can transmit the voltage supplied from the external module to the display area DA. The power connection lines can be connected to the low potential voltage line VSS, the high potential voltage line VDD, and the gate low voltage line and / or gate high voltage line included in the gate driving unit 112, but are not limited thereto. In addition, the signal connection lines can transmit signals for image display supplied from the external module to the display area DA. The signal connection lines can be connected to the gate lines and / or data lines, but are not limited thereto.

[0063] Dam 117 may be provided in the non-display area NA of substrate 110 and surround all or part of the display area DA. Dam 117 is adjacent to the display area DA and may be provided further outward from the display area DA. Dam 117 may be provided along the periphery of the display area DA to control the flow of a layer containing an organic material within an encapsulation layer provided on the light-emitting element. One or more dams 117 may be provided.

[0064] A panel crack detector 118 may be further provided in a portion of the non-display area NA of the substrate 110. The panel crack detector 118 may be provided between an end point of the substrate 110 and the dam 117. The panel crack detector 118 may also be provided below the dam 117 and overlap with at least a portion of the dam 117. The panel crack detector 118 may be provided at the outer periphery of the display device 100 to detect defects, such as cracks that may occur in the outer periphery portion.

[0065] Figure 3 is an exploded perspective view illustrating an arrangement structure of a touch sensing layer in a display device according to an exemplary embodiment of the present disclosure.

[0066] Reference Figure 3The display device 100 according to an exemplary embodiment of the present disclosure includes a substrate layer SUB including a plurality of sub-pixels SP disposed in a display area DA of a substrate 110. Furthermore, the display device 100 includes a touch sensing layer TSL disposed on the substrate layer SUB and including a plurality of touch electrodes TE. Furthermore, the display device 100 includes a color filter layer CFL disposed on the touch sensing layer TSL and including a plurality of color filters, and a black matrix disposed between the color filters in the same layer.

[0067] The display area DA of the substrate 110 is an area where a plurality of pixels P for realizing an image are provided. Each pixel P may include a plurality of sub-pixels SP, each of which includes a light-emitting element 200 and a pixel driving circuit configured to control the magnitude of current flowing in the light-emitting element 200. The pixel driving circuit may include a plurality of driving thin film transistors (TFTs).

[0068] In the exemplary embodiments of the present disclosure, it is assumed that the display device 100 is an organic light-emitting display device, but is not limited thereto. For example, when the display device 100 is an organic light-emitting display device, each sub-pixel may include a light-emitting element 200, which includes an anode, a light-emitting layer on the anode, and a cathode on the light-emitting layer. In this case, the light-emitting element 200 may include an organic light-emitting layer as a light-emitting layer. In addition, in addition to the organic light-emitting layer, the light-emitting element 200 may further include a hole transport layer, a hole injection layer, an electron injection layer, and an electron transport layer. For another example, when the display device 100 is a liquid crystal display device, the display unit may be configured to include a liquid crystal layer.

[0069] Reference Figure 3 The pixel driving circuit of the sub-pixel SP according to an exemplary embodiment of the present disclosure may include a driving transistor DT, a switching transistor ST, and a capacitor Cst. In addition, the pixel driving circuit may include a gate line GL, a data line DL, and lines connected to power sources VDD and VSS to drive the pixel.

[0070] The light-emitting element 200 can emit light according to the driving current generated by the driving transistor DT. The switching transistor ST can perform a switching operation so that a data signal (which is a data voltage) supplied through the data line DL in response to a gate signal supplied through the gate line GL is stored in the capacitor Cst. The driving transistor DT is operable so that a constant driving current flows between the high potential power supply VDD and the low potential power supply VSS in response to the data voltage stored in the capacitor Cst.

[0071] Each sub-pixel SP in the display device 100 according to an exemplary embodiment of the present disclosure has been described above as having a 2T (transistor) 1C (capacitor) structure including the switching transistor ST, the driving transistor DT, and the capacitor Cst.

[0072] As another example, the sub-pixels may further include Figure 3 The compensation circuit 135 is shown.

[0073] The compensation circuit 135 is a circuit for compensating for the threshold voltage of the drive transistor DT, etc., and may include one or more thin film transistors and capacitors. Here, the configuration and structure of the compensation thin film transistor and the compensation capacitor are not limited and may vary according to the compensation method. For example, when the compensation circuit 135 is added to the sub-pixel, the sub-pixel can be configured in various forms (e.g., 3T1C, 4T2C, 5T2C, 6T1C, 6T2C, 7T1C, and 7T2C).

[0074] Below, we will refer to Figures 4 to 7 A touch sensing unit of the display device 100 according to an exemplary embodiment of the present disclosure is described in detail.

[0075] Figure 4 is a plan view illustrating a structure of a touch sensing unit provided on a touch sensing layer according to an exemplary embodiment of the present disclosure. Figure 5 It is along Figure 3 A cross-sectional view taken along line II'. Figure 6 is a plan view illustrating an overlapping structure of a bank and a touch electrode in a display device according to an exemplary embodiment of the present disclosure. Figure 7 is a plan view illustrating an overlapping structure of a black matrix and a touch electrode in a display device according to an exemplary embodiment of the present disclosure.

[0076] Reference Figure 4 and Figure 5 The touch sensing layer TSL is located on the encapsulation layer ENCAP, and the touch sensing unit is provided in the touch sensing layer TSL. In this case, the touch sensing unit includes a plurality of touch electrodes TE and a plurality of bridge electrodes BE1 and BE2 configured to electrically connect unit electrodes of the plurality of touch electrodes TE.

[0077] For example, Figure 4 As shown, the touch sensing unit includes a plurality of first touch electrodes TE1 each extending in a first direction and a plurality of second touch electrodes TE2 each extending in a second direction intersecting the first direction. Here, a plurality of first touch routing lines are respectively connected to the plurality of first touch electrodes TE1, a plurality of second touch routing lines are respectively connected to the plurality of second touch electrodes TE2, and a plurality of touch pads respectively connected to the plurality of first touch routing lines and the plurality of second touch routing lines may be further provided on the substrate 110.

[0078] Each of the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 may include a plurality of unit electrodes. For example, each of the first touch electrode TE1 and the second touch electrode TE2 may include a plurality of unit electrodes patterned in a grid form.

[0079] Figure 4 The first touch electrode TE1 is shown as including unit electrodes patterned in series in a diamond grid form, but is not limited thereto. The unit electrodes can be patterned in various shapes, such as triangles, squares, diamonds, or other polygonal shapes. Here, the unit electrodes of the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 patterned in a grid form may include a plurality of first touch electrode lines TEL1 and a plurality of second touch electrode lines TEL2 surrounding an opening OAT. The first touch electrode lines TEL1 and the second touch electrode lines TEL2 serve as actual touch electrodes for applying touch drive signals or sensing touch sensing signals. Each of the at least one opening OAT present in the first touch electrode TE1 may correspond to a light-emitting region of a subpixel SP. In other words, the plurality of openings OAT serve as a path along which light emitted from the subpixel SP disposed thereunder is emitted. Figure 4 An example of the structure of the unit electrode of the first touch electrode TE1 is shown, but the second touch electrode TE2 may also have the same structure.

[0080] The display device 100 according to an exemplary embodiment of the present disclosure may sense a touch through a mutual capacitance scheme or a self capacitance scheme as a capacitance-based touch sensing scheme.

[0081] In the case of a touch sensing scheme based on mutual capacitance, the multiple touch electrodes TE can be classified into touch drive electrodes to which touch drive signals are applied, and touch sensing electrodes that detect touch sensing signals and form capacitance with the touch drive electrodes. For example, the first touch electrode TE1 can be used as a touch sensing electrode configured to sense a touch sensing signal. In this case, the second touch electrode TE2 can be used as a touch drive electrode to which a touch drive signal is applied, but is not limited thereto. That is, the first touch electrode TE1 can be used as a touch drive electrode, and the second touch electrode TE2 can be used as a touch sensing electrode.

[0082] In the case of a touch sensing scheme based on self-capacitance, multiple touch electrodes TE can be used as touch drive electrodes and touch sensing electrodes at the same time. That is, the touch sensing circuit applies a touch drive signal to one or more touch electrodes TE, detects the touch sensing signal through the touch electrode TE to which the touch drive signal is applied, detects the change in capacitance formed between the pointer (e.g., a finger or pen) and the touch electrode TE based on the detected touch sensing signal, and senses whether there is a touch and / or the coordinates of the touch. In the case of a touch sensing scheme based on self-capacitance, no distinction is made between touch drive electrodes and touch sensing electrodes. For example, each of the multiple first touch electrodes TE1 and the multiple second touch electrodes TE2 can be used as a touch drive electrode and a touch sensing electrode.

[0083] Reference Figures 4 to 6 , the touch electrode line TEL1 of the first touch electrode TE1 may be located on the bank 400 provided between the sub-pixels SP in the non-emission region. Figure 6 As shown, the bank 400 includes a plurality of openings OA BK corresponding to the light emitting areas of the plurality of sub-pixels SP. Therefore, the openings OA T of the touch electrode may overlap with the openings OA BK of the bank 400. In one embodiment, in a top view, the sub-pixels SP are respectively located in the openings OA T of the touch electrode. However, as Figure 6 As shown, in the top view, no sub-pixel SP exists in at least a portion of the opening OA T.

[0084] Reference Figures 4 to 7 , the touch electrode line TEL1 of the first touch electrode TE1 may be located under the black matrix 710 disposed between the sub-pixels SP in the non-emission region. Figure 7 As shown, the black matrix 710 includes a plurality of openings OA BM corresponding to the light emitting regions of the plurality of sub-pixels SP. Therefore, the opening OA T of the first touch electrode TE1 may overlap with the opening OA BK of the bank 400 and the opening OA BM of the black matrix 710.

[0085] The plurality of sub-pixels SP may have different pixel structures. For example, the blue sub-pixel, the green sub-pixel, and the red sub-pixel may have different pixel structures. Since the plurality of sub-pixels SP have different pixel structures, the opening OA BM of the black matrix 710 and the opening OA BK of the bank 400 may have different shapes for the respective light-emitting regions of the blue sub-pixel, the green sub-pixel, and the red sub-pixel. However, the present disclosure is not limited thereto.

[0086] An example of the structure of the unit electrode of the first touch electrode TE1 has been described above, but the second touch electrode TE2 may also have the same structure.

[0087] like Figure 4As shown, the touch sensing unit includes a first bridging electrode BE1 configured to electrically connect the unit electrodes of the first touch electrode TE1. In addition, the touch sensing unit includes a second bridging electrode BE2 configured to connect the unit electrodes of the second touch electrode TE2. Here, the first touch electrode TE1 and the first bridging electrode BE1 are arranged in different layers, and the first bridging electrode BE1 is arranged in an upper layer of the first touch electrode TE1. However, the present disclosure is not limited to this. In another embodiment, the first bridging electrode BE1 can be arranged below the first touch electrode TE1. In addition, the second touch electrode TE2 and the second bridging electrode BE2 can be arranged in the same layer. For example, the second touch electrode TE2 and the second bridging electrode BE2 can be patterned integrally. In this case, the second bridging electrode can be used to connect the end of any one unit electrode of the second touch electrode TE2 to the end of another unit electrode of the second touch electrode TE2. However, the present disclosure is not limited to this. In another embodiment, the first touch electrode TE1 and the first bridge electrode BE1 may be provided in the same layer and may be integrally patterned, while the second touch electrode TE2 and the second bridge electrode BE2 may be provided in different layers, and the second bridge electrode BE2 may be provided above / below the second touch electrode TE2.

[0088] Below, we will refer to Figure 5 The stacked structure of the sub-pixel SP, the touch sensing layer TSL, and the color filter layer CFL disposed in the display area DA on the substrate 110 is described in more detail.

[0089] Reference Figure 5 The display device 100 according to an exemplary embodiment of the present disclosure may have a structure in which a substrate layer SUB, a transistor layer TRL on the substrate layer SUB, a planarization layer PLN on the transistor layer TRL, a light-emitting element layer EDL on the planarization layer PLN, an encapsulation layer ENCAP on the light-emitting element layer EDL, a touch sensing layer TSL on the encapsulation layer ENCAP, and a color filter layer CFL on the touch sensing layer TSL are sequentially stacked. In this case, a protective layer, an organic layer, a polarizing layer, and a cover layer may be further provided on the color filter layer CFL of the display device 100.

[0090] As an example, Figure 5 Two sub-pixels emitting light of different wavelength ranges are shown among the plurality of sub-pixels SP provided in the display area DA. However, other sub-pixels emitting light of different wavelength ranges may have the same structure except for the light output from the light emitting stack of the light emitting element 200.

[0091] The substrate layer SUB includes a substrate 110 for supporting and protecting components of the display device disposed thereon.

[0092] For example, when the substrate 110 is made of polyimide (PI), moisture may penetrate the PI substrate 110 and penetrate into the thin film transistor or the light-emitting element, thereby deteriorating the performance of the display device 100. The display device 100 according to an exemplary embodiment of the present disclosure may use a double PI structure as the substrate 110 to suppress the degradation of the performance of the display device 100 caused by moisture penetration.

[0093] For example, the substrate 110 may include a first substrate and a second substrate each made of PI, and an inorganic insulating layer disposed between the first substrate and the second substrate. The inorganic insulating layer may be made of silicon nitride (SiN x ) or silicon oxide (SiO x ) or a single layer or a multilayer thereof. For example, the inorganic insulating layer can be made of silicon dioxide (SiO2) material, but is not limited thereto. The inorganic insulating layer can be made of SiO2 and SiN x The inorganic insulating layer is used to block moisture from penetrating the second substrate. In addition, when the first substrate carries charges, the inorganic insulating layer can prevent the charges from passing through the second substrate and affecting the thin film transistor 300. Since the charges in the lower PI are blocked by the inorganic insulating layer, the reliability of product performance can be improved. In addition, the separate process of forming a metal layer to block charges can be omitted, thereby simplifying the overall process and reducing production costs.

[0094] The substrate layer SUB may further include a buffer layer 120 disposed on the substrate 110 .

[0095] For example, the buffer layer 120 may include a multi-buffer layer disposed on the substrate 110 and an active buffer layer disposed on the multi-buffer layer. A metal layer for light shielding may be further disposed between the multi-buffer layer and the active buffer layer. The metal layer may also be referred to as a light shielding layer.

[0096] Thin film transistors including a driving transistor Td and at least one switching transistor Ts, various patterns for forming at least one capacitor, various insulating films, and various metal patterns may be disposed on the transistor layer TRL.

[0097] Reference Figure 5 , the thin film transistor 300 may be disposed on the buffer layer 120 . The thin film transistor 300 may include an active layer 310 , a gate electrode 330 , a source electrode 350 , and a drain electrode 370 . Figure 5 The drain electrode 370 of the thin film transistor 300 is shown to be electrically connected to the anode (or first electrode) 210 of the light emitting element 200 to be described below. However, the present disclosure is not limited thereto. That is, depending on the design of the pixel driving circuit, the source electrode 350 can be used as a drain electrode, and the drain electrode 370 can be used as a source electrode.

[0098] The active layer 310 of the thin film transistor 300 may include a channel region in which a channel is formed when the thin film transistor 300 is driven, and a source region and a drain region on both sides of the channel region. The source region of the active layer 310 is connected to the source electrode 350, and the drain region is connected to the drain electrode 370. For example, the source region and the drain region can be configured by ion doping (impurity doping) the active layer 310. The source region and the drain region can be generated by doping ions into a polysilicon material. The channel region may refer to a portion that is not doped with ions and retains the polysilicon material. However, the present disclosure is not limited thereto.

[0099] The gate insulating layer 130 is provided on the active layer 310. The gate insulating layer 130 may be provided on the entire substrate 110 including the active layer 310. For example, the gate insulating layer 130 may be made of silicon nitride (SiN x ) or silicon oxide (SiO x ) or a plurality of layers thereof. The gate insulating layer 130 may include contact holes. The contact holes are used to connect the source electrode 350 and the drain electrode 370 of the thin film transistor 300 to the source region and the drain region of the active layer 310 of the thin film transistor 300, respectively.

[0100] The gate electrode 330 of the thin film transistor 300 is provided on the gate insulating layer 130. For example, the gate electrode 330 may be formed of a single layer of any one of molybdenum (Mo), copper (Cu), titanium (Ti), aluminum (Al), chromium (Cr), gold (Au), nickel (Ni), and neodymium (Nd), or alloys thereof, or a multilayer thereof. The gate electrode 330 may be formed on the gate insulating layer 130 and overlap with the channel region of the active layer 310 of the thin film transistor 300.

[0101] The interlayer insulating layer 140 is provided on the gate 330. For example, the interlayer insulating layer 140 may be made of silicon nitride (SiN x ) or silicon oxide (SiO x The interlayer insulating layer 140 may include a contact hole for exposing the source region and the drain region of the active layer 310 of the thin film transistor 300.

[0102] The first inorganic layer 150 may be provided on the interlayer insulating layer 140. The first inorganic layer 150 may be a passivation layer for protecting the thin film transistor 300 and may be omitted. For example, the first inorganic layer 150 may be made of silicon nitride (SiN x ) or silicon oxide (SiO x ) or consists of a double layer of the aforementioned materials.

[0103] A planarization layer 160 composed of at least one layer is provided on the planarization layer PLN. The planarization layer 160 may be an organic layer that planarizes the upper portion of the thin film transistor 300 and protects the thin film transistor 300. For example, the planarization layer 160 may be made of an organic material such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0104] The light emitting element 200 provided in the light emitting element layer EDL includes an anode 210, a light emitting layer 220, and a cathode (or second electrode) 230. In addition, the bank 400 provided on the light emitting element layer EDL defines the light emitting regions of the plurality of sub-pixels SP. Figure 6 , the bank 400 may include an opening OA BK for exposing a portion of the light emitting region corresponding to the sub-pixel SP.

[0105] The anode 210 of the light-emitting element 200 is disposed on the planarization layer 160. The anode 210 may be made of a metal material and may be electrically connected to the thin film transistor 300 through a contact hole formed in the planarization layer 160. For example, when the display device 100 according to an exemplary embodiment of the present disclosure is a top-emitting display device, light emitted from the light-emitting element 200 is emitted above the substrate 110. In this case, the anode 210 may further include a transparent conductive layer and a reflective layer on the transparent conductive layer. For example, the transparent conductive layer may be made of a transparent conductive oxide such as ITO or IZO, and the reflective layer may be made of silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), or an alloy of the foregoing metals.

[0106] The bank 400 may be provided to cover both ends of the anode 210, and a portion of the anode 210 may be exposed through the opening OABK of the bank 400. For example, the bank 400 may be made of silicon nitride (SiN x ) or silicon oxide (SiO x ) or an organic insulating material such as benzocyclobutene resin, acrylic resin or imide resin, but is not limited thereto. A spacer may be further provided on the bank 400.

[0107] The light emitting layer 220 of the light emitting element 200 is disposed on and around the opening OA BK of the bank 400. Therefore, the light emitting layer 220 may be disposed on the anode 210 exposed through the opening OA BK of the bank 400. For example, the light emitting layer 220 may include a plurality of organic films. The cathode 230 is disposed on the light emitting layer 220 of the light emitting element 200.

[0108] The encapsulation layer 500 having a single-layer structure or a multi-layer structure is disposed on the encapsulation layer ENCAP on the light-emitting element layer EDL. Figure 5As shown, the encapsulation layer 500 may include a first encapsulation layer 510, a second encapsulation layer 520, and a third encapsulation layer 530. Here, the first encapsulation layer 510 and the third encapsulation layer 530 may be composed of an inorganic film, and the second encapsulation layer 520 may be composed of an organic film. Among the first encapsulation layer 510, the second encapsulation layer 520, and the third encapsulation layer 530, the second encapsulation layer 520 is the thickest and may serve as a planarization layer.

[0109] The first encapsulation layer 510 may be disposed closest to the light emitting element 200. That is, the first encapsulation layer 510 may be disposed on the cathode 230 of the light emitting element layer EDL. The first encapsulation layer 510 may be made of an inorganic insulating material on which low temperature deposition can be performed. For example, the first encapsulation layer 510 may be made of silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), etc. The first encapsulation layer 510 is deposited in a low temperature environment. Therefore, during the deposition process, damage to the light emitting layer 200 including organic materials that are susceptible to high temperature environments can be suppressed.

[0110] The second encapsulation layer 520 can be formed to have a smaller area than the first encapsulation layer 510. In this case, the second encapsulation layer 520 can be formed to expose both ends of the first encapsulation layer 510. The second encapsulation layer 520 can be used as a buffer to relieve the interlayer stress caused by the bending of the flexible display device and play a role in enhancing the flattening performance. For example, the second encapsulation layer 520 can be made of an organic insulating material such as acrylic resin, epoxy resin, polyimide, polyethylene or silicon oxycarbide (SiOC). For example, the second encapsulation layer 520 can be formed by an inkjet method. However, the present disclosure is not limited thereto.

[0111] The third encapsulation layer 530 may be formed on the substrate 110 on which the second encapsulation layer 520 is formed to cover the upper surface and side surfaces of each of the second encapsulation layer 520 and the first encapsulation layer 510. In this case, the third encapsulation layer 530 may minimize or block external moisture or oxygen from penetrating into the first encapsulation layer 510 and the second encapsulation layer 520. For example, the third encapsulation layer 530 may be made of, for example, silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiON) or aluminum oxide (A12O3) inorganic insulating materials. Figure 2 As shown, at least one dam 117 may be provided in the non-display area NA to block the flow of the second encapsulation layer 520 of the encapsulation layer 500 .

[0112] The touch sensing unit is provided on the touch sensing layer TSL on the upper portion of the encapsulation layer ENCAP. The touch sensing unit includes a plurality of touch electrodes and a plurality of bridge electrodes. Figure 4 As described above, the touch sensing unit includes a plurality of first touch electrodes TE1 extending in a first direction. Furthermore, the touch sensing unit includes a plurality of second touch electrodes TE2 extending in a second direction intersecting the first direction. Each of the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 may include multiple unit electrodes. For example, each of the first touch electrodes TE1 and the second touch electrodes TE2 may include multiple unit electrodes patterned in a grid. Furthermore, the touch sensing unit includes a first bridging electrode BE1 configured to electrically connect the unit electrodes of the first touch electrodes TE1. Furthermore, the touch sensing unit includes a second bridging electrode BE2 configured to electrically connect the unit electrodes of the second touch electrodes TE2. Here, the first touch electrodes TE1 and the first bridging electrode BE1 are provided in different layers, with the first bridging electrode BE1 provided as an upper layer than the first touch electrodes TE1. Alternatively, the second touch electrodes TE2 and the second bridging electrode BE2 may be provided in the same layer.

[0113] Reference Figure 5 A touch insulating layer 600 including an insulating film for placing a touch sensing unit is provided on the encapsulation layer 500. Here, a touch buffer layer 610 is provided on the third encapsulation layer 530, and the first touch electrode TE1 is provided on the touch buffer layer 610. The second touch electrode TE2 may also be provided on the touch buffer layer 610.

[0114] The touch buffer layer 610 can suppress damage to the light-emitting layer 220 containing materials that are susceptible to chemicals or moisture. When the touch sensing layer TSL is formed, chemicals used in the process (e.g., developer, etchant, etc.), moisture from the outside, etc. may be generated. The touch buffer layer 610 is provided and the touch sensing unit is provided thereon. Therefore, it is possible to suppress the penetration of chemicals, moisture, etc. into the light-emitting layer 220 containing organic materials during the manufacturing process of the touch sensing unit. In addition, the touch buffer layer 610 can suppress damage to the light-emitting layer 220 containing organic materials that are susceptible to high temperatures. Here, the touch buffer layer 610 can be made of an organic insulating material that can be formed at a temperature below a predetermined temperature (e.g., 100°C) and has a low dielectric constant of 1 to 3. For example, the touch buffer layer 610 can be made of an acrylic material, an epoxy material, or a siloxane material. As described above, the touch buffer layer 610 made of an organic insulating material can suppress damage to the encapsulation layer ENCAP caused by the bending of the flexible display device. Therefore, the touch buffer layer 610 may also suppress breakage of the plurality of touch electrodes TE1 and TE2 and the plurality of bridge electrodes BE1 and BE2 disposed on the encapsulation layer ENCAP.

[0115] The touch interlayer insulating layer 620 is disposed on the first touch electrode TE1 and the touch buffer layer 610, and the first bridging electrode BE1 is disposed on the touch interlayer insulating layer 620. The first touch electrode TE1 can be insulated from the first bridging electrode BE1 by the touch interlayer insulating layer 620. That is, multiple first touch electrodes TE1 extending in the first direction can be electrically connected via the bridging electrode BE1 disposed thereon. This is to prevent short circuits at the intersections of the multiple touch electrodes arranged in the first and second directions. The touch interlayer insulating layer 620 may include contact holes for electrically connecting the first touch electrode TE1 and the first bridging electrode BE1. Furthermore, the touch interlayer insulating layer 620 may be an organic film made of an organic material. However, the material of the touch interlayer insulating layer 620 is not limited thereto. For example, the touch interlayer insulating layer 620 may be an inorganic film made of an inorganic material.

[0116] The second inorganic layer 630 is disposed on the first bridge electrode BE1 and the touch interlayer insulating layer 620 to cover the touch sensing unit and prevents damage to the electrodes of the touch sensing unit caused by chemicals (eg, developer, etc.) used for upper layer processing or moisture.

[0117] At the same time, the display device 100 according to the exemplary embodiments of the present disclosure can enhance the touch sensing performance of the touch electrodes by increasing the metal density of the multiple touch electrodes TE1 and TE2. Specifically, the touch sensing performance of the touch sensing unit can be enhanced by increasing the width of the touch electrode lines of the touch electrodes TE1 and TE2 or the area of ​​the touch electrodes TE1 and TE2 themselves to increase the metal density of the touch electrodes. For example, at least a portion of the touch electrode lines TEL1 of the multiple first touch electrodes TE1 and the touch electrode lines of the multiple second touch electrodes TE2 can have a width that is the same as or substantially the same as the width between adjacent portions of the multiple openings in the black matrix 710. In addition, the sum of the width of the bridge electrode BE1 and the width of the touch electrode lines of the unit electrodes of the touch electrode TE1 connected by the bridge electrode BE1 can be the same as or substantially the same as the width between adjacent portions of the multiple openings in the black matrix 710. Furthermore, the sum of the width of the bridge electrode BE2 and the width of the touch electrode lines of the unit electrodes of the touch electrode TE2 connected by the bridge electrode BE2 can be the same as or substantially the same as the width between yet other adjacent portions of the multiple openings in the black matrix 710. All of the touch electrodes TE1 and TE2 and the bridge electrodes BE1 and BE2 are disposed under the black matrix 710. Therefore, they cannot be recognized from the outside, and the metal density of the touch electrodes is increased. Therefore, the touch sensing performance of the touch electrodes can be enhanced.

[0118] As described above, in the display device 100 according to the exemplary embodiments of the present disclosure, the metal density of the touch electrodes is increased to increase the overlap area between a user's touch input component (e.g., a finger or a pen) and the touch electrodes. Consequently, the capacitance formed between the user's touch input component and the touch electrodes increases. This enhances the touch sensing performance of the touch electrodes. Figure 5 Only the first touch electrode TE1 and the first bridge electrode BE1 are illustrated to describe the structure of the touch sensing unit including the touch electrodes and the bridge electrodes provided in different layers. However, like the first touch electrode TE1, the metal density of the second touch electrode TE2 may also be increased.

[0119] like Figure 5 As shown, a second inorganic layer 630 configured to shield the touch sensing unit is provided on the front surface of the uppermost portion of the touch sensing layer TSL. The second inorganic layer 630 serves as a shielding layer to minimize damage to the electrodes of the touch sensing unit caused by chemicals (e.g., developer, etchant, etc.) used to form the color filter layer CFL as an upper layer of the touch sensing layer TSL.

[0120] In the display device 100 according to an exemplary embodiment of the present disclosure, the multiple touch electrodes are designed to maximize the metal density. Therefore, when the multiple touch electrodes are arranged directly below the second inorganic layer 630, arc faults may occur in the touch electrodes with high metal density during the process of depositing the second inorganic layer 630 on the touch sensing unit (for example, a plasma process). To suppress this problem, the display device 100 according to an exemplary embodiment of the present disclosure includes a plurality of touch electrodes TE1 and TE2 arranged below the touch interlayer insulating layer (which is an organic film) 620. In addition, the first bridging electrode BE1 with a lower metal density is arranged on the touch interlayer insulating layer 620 and below the second inorganic layer 630. Therefore, it is possible to suppress the occurrence of arc faults during the formation of the second inorganic layer 630 and enhance touch sensing performance.

[0121] A plurality of color filters 720 and a black matrix 710 formed between the plurality of color filters 720 in the same layer are disposed on the color filter layer CFL on an upper portion of the touch sensing layer TSL.

[0122] like Figure 5 As shown, color filters 720A and 720B and a black matrix 710 are disposed on the second inorganic layer 630 .

[0123] The black matrix 710 is arranged on the second inorganic layer 630 and overlaps with the bank 400, and a plurality of color filters 720 are arranged to overlap with the plurality of openings OA BM of the black matrix 710. Each color filter 720 reduces the reflection and recognition of external light incident from the outside into the bank 400, but does not block the light emitted from the light-emitting element 200. Therefore, it is possible to maintain light efficiency. The black matrix 710 is arranged to overlap with the edge of the light-emitting area of ​​the light-emitting element 200 and is used to absorb external light incident into the black matrix 710. Therefore, it is possible to reduce the amount of external light incident into the light-emitting area and also suppress the recognition of reflected light of external light. The openings OA BM of the black matrix 710 may overlap with the openings OA BK of the bank 400. In addition, the openings OA BM of the black matrix 710 may have a larger area than the openings OA BK of the bank 400. In this case, the width of each touch electrode line of the touch electrodes TE1 and TE2 may be no greater than and substantially the same as the width between the openings OABM of the black matrix 710 .

[0124] The insulating layer 730 may be disposed on the black matrix 710 and the plurality of color filters 720 , and the insulating layer 730 may be made of an organic material.

[0125] In display devices where the touch sensing unit is disposed on the color filter layer CFL or does not include a color filter layer CFL, external light is reflected by the touch electrodes. Therefore, the touch electrodes may be recognized. In this case, the placement and area of ​​the touch electrodes are limited. However, in the display device 100 according to the exemplary embodiment of the present disclosure, the touch sensing unit is disposed between the encapsulation layer ENCAP and the color filter layer CFL. Furthermore, the touch electrodes of the touch sensing unit are disposed below the black matrix 710. This increases the degree of freedom in the placement of the touch electrodes and thus increases the metal density of the touch electrodes. Specifically, in a direction perpendicular to the substrate 110, the openings OAM of the black matrix 710, the openings OAT of the first touch electrodes TE1, and the openings OABK of the bank 400 are disposed at corresponding positions. For example, the centers of the openings OAM, OAT, and OABK may be located on the same line perpendicular to the substrate 110, and the openings OAM, OAT, and OABK may have corresponding shapes. In one embodiment, the size of the opening OAT may be greater than or equal to the size of the opening OABK. In one embodiment, the size of the opening OAT may be smaller than, but substantially equal to, the size of the opening OAM. In one embodiment, the center of the opening OAM and the center of the opening OA BK overlap with each other and a gap is formed between the opening OAM and the opening OA BK, and the gap may be in the shape of a ring or a polygonal ring.

[0126] In the display device 100 according to an exemplary embodiment of the present disclosure, each of the plurality of first touch electrodes TE1, the plurality of second touch electrodes TE2, and the plurality of first bridging electrodes BE1 provided on the touch electrodes is disposed to overlap with the black matrix 710. In this case, each of the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 may be disposed to be parallel to a portion of the black matrix 710 in a vertical direction. In addition, the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 may each have a width that is the same as or substantially the same as a width between two adjacent openings among the plurality of openings OABM of the black matrix 710.

[0127] Below, we will refer to Figures 8 to 10 An example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure is described.

[0128] Figure 8 It is along Figure 4 1 is a cross-sectional view taken along line II-II′ of FIG. 1 and illustrates an example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure. Figure 9 It is along Figure 4 1 is a cross-sectional view taken along line II-II′ of FIG. 1 , and illustrates another example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure. Figure 10 is a plan view illustrating an overlapping structure of touch electrodes and dummy electrodes in a display device.

[0129] Figure 8 An example of a touch electrode structure for a display device 100 according to an exemplary embodiment of the present disclosure is shown. In this case, the first touch electrode TE1 and the first bridging electrode BE1 disposed thereon are electrically connected to each other through contact holes in the touch interlayer insulating layer 620. Here, the touch electrode lines of the first touch electrode TE1 can have a width that is the same as, or substantially the same as, the width between the openings of the black matrix 710. Therefore, by increasing the metal density of the touch electrodes, the capacitance of touch sensing can be increased, and touch sensing performance can be enhanced. Furthermore, the bridging electrode, which has a lower metal density than the touch electrodes, is disposed below the second inorganic layer 630. Therefore, the occurrence of arc faults during the deposition process of the second inorganic layer 630 can be suppressed.

[0130] Figure 9 Another example of a touch electrode structure of a display device according to an exemplary embodiment of the present disclosure is shown. In this case, a dummy electrode DE may be provided on a portion of the first touch electrode TE1 that is not connected to the first bridge electrode BE1. The dummy electrode DE and the first bridge electrode BE1 are provided in the same layer.

[0131] like Figure 9As shown, the dummy electrode DE is provided as an upper layer of the first touch electrode TE1 and overlaps with the first touch electrode TE1. However, the present disclosure is not limited thereto. In another embodiment, the dummy electrode DE is provided below the first touch electrode TE1. For example, the dummy electrode DE formed in a grid shape and overlapping with the first touch electrode TE1 and the second touch electrode TE2 can be provided below the black matrix 710. Thus, a dual-electrode structure including the dummy electrode DE and the first touch electrode TE1 is formed, and a fringe field effect occurs. Due to the dual-electrode structure including the dummy electrode DE and the first touch electrode TE1, the capacitance formed between the user's touch input component (e.g., a finger or pen) and the touch electrode increases. As a result, the touch sensing performance can be further enhanced. Figure 9 An example in which the dummy electrode DE is disposed on the first touch electrode TE1 is illustrated. However, the dummy electrode DE may also be disposed on the second touch electrode TE2.

[0132] The position and number of the dummy electrodes DE corresponding to the first touch electrodes TE1 or the second touch electrodes TE2 are not limited. However, the dummy electrodes DE may be locally provided to suppress the occurrence of arc faults during the process of depositing the second inorganic layer 630. That is, the dummy electrodes DE may be provided to correspond to all or part of the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2.

[0133] In addition, at least one of the first touch electrode TE1 and the second touch electrode TE2 may be electrically insulated from the dummy electrode DE disposed thereon by the touch interlayer insulating layer 620. In this case, the dummy electrode DE may be floated.

[0134] Reference Figure 10 , the dummy electrode DE may be formed to have a smaller width than the first touch electrode TE1 and the second touch electrode TE2. Figure 10 The example in which the dummy electrodes DE are sequentially arranged on the first touch electrode line TEL1 of the unit electrodes constituting the first touch electrode TE1 is shown. However, the dummy electrodes DE may be locally arranged on the unit electrodes of the touch electrodes or may be regularly or randomly arranged on the unit electrodes of the touch electrodes. In addition, the plurality of unit electrodes constituting the touch electrodes may include unit electrodes on which the dummy electrodes DE are not arranged, and there may be touch electrodes on which the dummy electrodes DE are not arranged.

[0135] like Figure 10 As shown, the dummy electrode DE having a smaller width than the first touch electrode TE1 and the second touch electrode TE2 is disposed under the inorganic layer 630. Therefore, it is possible to suppress the occurrence of an arc fault during the process of depositing the inorganic layer 630. In addition, it is possible to further enhance touch sensing performance.

[0136] Although the exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto, and the present disclosure can be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are illustrative in all aspects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the attached claims, and all technical concepts within their equivalent scope should be interpreted as falling within the scope of the present disclosure.

Claims

1. A display device comprising: A substrate, the substrate comprising a display area and a non-display area; a light-emitting element layer, disposed on the substrate in the display area; an encapsulation layer, disposed on the light-emitting element layer; A touch sensing layer is provided on the packaging layer; a color filter layer, disposed on the touch sensing layer; a gate driving unit, disposed in the non-display area on the substrate; a dam, disposed on the substrate in the non-display area and surrounding the display area; as well as A panel crack detector is provided at an edge portion of the substrate and in the non-display area. The dam is located between the gate driving unit and the panel crack detector.

2. The display device according to claim 1, wherein The touch sensing layer includes a plurality of first touch electrodes, a plurality of second touch electrodes, and a first bridging electrode, where the first bridging electrode is configured to electrically connect adjacent first touch electrodes.

3. The display device according to claim 2, wherein: The color filter layer includes a black matrix having a plurality of first openings and a plurality of color filters respectively covering the plurality of first openings.

4. The display device according to claim 2, wherein The touch sensing layer further includes a touch interlayer insulating layer provided between the first bridge electrode and the first touch electrode, and The first bridge electrode is electrically connected to the first touch electrode through a contact hole formed in the touch interlayer insulating layer.

5. The display device according to claim 3, wherein The first bridge electrode, the plurality of first touch electrodes, and the plurality of second touch electrodes are disposed under the black matrix. The display device according to claim 5 , wherein: The light emitting element layer includes a plurality of sub-pixels and a bank layer, the bank layer including a plurality of second openings defining light emitting areas of the plurality of sub-pixels, and The first opening and the second opening have corresponding shapes, and a size of the first opening is greater than or equal to a size of the second opening.

7. The display device according to claim 2, wherein: The touch sensing layer further includes a second bridging electrode configured to electrically connect adjacent second touch electrodes.

8. The display device according to claim 7, wherein: The plurality of second touch electrodes and the second bridge electrodes are integrally formed in the same layer.

9. The display device according to claim 6, wherein: In a plan view, a center of the first opening and a center of the second opening overlap with each other with a gap formed therebetween.

10. The display device according to claim 9, wherein The gap is annular or polygonal.

11. The display device according to claim 6, wherein The plurality of first touch electrodes and the plurality of second touch electrodes are formed in a grid shape including a plurality of third openings, Wherein, in the top view, the plurality of sub-pixels are located in the plurality of third openings, and In the top view, the plurality of sub-pixels are not located in at least one of the plurality of third openings.

12. The display device according to claim 2, further comprising dummy electrodes formed in a grid shape, and in, In a plan view, the dummy electrodes overlap with the plurality of first touch electrodes and the plurality of second touch electrodes.

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