Display device

Abstract

To increase the quality and the reliability of a display device with a touch function.SOLUTION: The display device includes: a substrate including a display region and a non-display region adjacent to the display region; a first touch wire arranged in the non-display region and a second touch wire arranged on the first touch wire; and a front surface member arranged on the first and second touch wires and also in at least a part of the non-display region, the front surface member including a transmission unit and a shield unit. The first touch wire is arranged in a region that overlaps with the transmission region and can include at least two patterns.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a display device, and more particularly to a display device that provides a uniform brightness ratio for the display device. [Background technology]

[0002] In recent years, as we enter the information age, the field of displays that visually represent electrical information signals has been developing rapidly. In response to this, a variety of display apparatuses with excellent performance, such as being thin, lightweight, and consuming less power, have been developed.

[0003] Specific examples of such display devices include liquid crystal display devices (LCDs), organic light emitting display devices (OLEDs), quantum dot display devices, and the like.

[0004] In order to provide users with more diverse functions, display devices are moving away from conventional input methods such as buttons, keyboards, and mice, and research is underway on touch display devices that provide a touch-based input method that allows users to easily and intuitively input information or commands.

[0005] The display device may include a number of touch electrodes disposed on or incorporated into a display panel, and may detect the presence or absence of a touch and touch coordinates based on a change in capacitance formed in the number of touch electrodes formed on a substrate in response to a user's touch.

[0006] A touch electrode included in the display panel may be electrically connected to a touch driving circuit through a touch wiring to be driven. The touch electrode may be disposed in a display area where an image is displayed, and the touch wiring may be disposed in a non-display area where an image is not displayed on the display panel.

[0007] The touch electrode and the touch wiring may be formed using an opaque conductive material. When the touch electrode arranged in the display area is made of an opaque conductive material, the touch electrode blocks light emitted from a number of sub-pixels arranged below the touch electrode from passing through to the upper portion, so the touch electrode may be arranged in a non-emitting area arranged between the sub-pixels in the display area. Therefore, the touch electrode is designed to have a small line width so that it can be arranged in the non-emitting area between the sub-pixels arranged in the display area.

[0008] The touch wiring arranged in the non-display area may electrically connect the touch driving circuit and the touch electrode to transmit a signal from the touch driving circuit to the touch electrode. In order to transmit a signal from the touch driving circuit arranged in a portion of the non-display area to the touch electrode, an increase in the number of touch wirings and an increase in the length of the touch wirings may cause a problem of an increase in resistance or RC delay of the touch wiring.

[0009] Therefore, the touch wiring must be designed to have a wider width than the touch electrode disposed in the display area to reduce the resistance or RC delay of the touch wiring.

[0010] When the display device is not in operation, external light may be incident on the display device, and the external light may be reflected by various metal electrodes and wirings formed on the display device.

[0011] Light reflected by metal electrodes and wiring formed in the display device may also be transmitted to the outside. When the reflected light is transmitted, it may be blocked by the touch electrodes and touch wiring disposed in the upper part of the display device and not transmitted to the outside of the display device. Since the touch wiring disposed in the non-display area is formed thicker than the touch electrodes disposed in the display area, the amount of reflected light transmitted to the outside may be less than that of the surrounding area. As a result, when a user looks at the display device, a problem occurs in that the area where the touch wiring is formed appears darker than the surrounding area.

[0012] Therefore, there is a need for a method for improving the difference in the brightness ratio in a non-display area of ​​a display device, thereby improving the reliability of the product.

[0013] Various studies have been conducted to reduce the difference in brightness that occurs when a display device is not in operation, but the results are still insufficient, and there is an urgent need for development in this regard. Summary of the Invention [Problem to be solved by the invention]

[0014] The problem to be solved by the present specification is to provide a display device including a pattern in touch wiring to improve the non-uniform brightness contrast of the display device that is viewed by a user when the display device is not operating.

[0015] Another problem to be solved by the present specification is to provide a display device in which a touch wiring pattern diffusely reflects light incident from the outside, increasing the amount of light transmitted to the outside, thereby providing a uniform brightness ratio of the display device.

[0016] Another problem to be solved by the present disclosure is to provide a display device capable of improving product reliability by making the brightness / darkness ratio of the display device uniform.

[0017] Another problem to be solved by the present specification is to provide a display device capable of providing a user with a high aesthetic sense by forming a uniform brightness / darkness ratio. [Means for solving the problem]

[0018] A display device according to an embodiment of the present specification includes a substrate including a display area and a non-display area adjacent to the display area, a first touch wiring arranged in the non-display area and a second touch wiring arranged on the first touch wiring, and a front member arranged on the first and second touch wirings and disposed in at least a portion of the non-display area, the front member including a transmissive portion and a blocking portion, wherein the first touch wiring is arranged in an area overlapping with the transmissive portion and may include at least two or more patterns.

[0019] A display device according to another embodiment of the present specification includes a substrate including a display area and a non-display area adjacent to the display area, a first touch electrode arranged in the display area and a second touch electrode arranged on the first touch electrode, a first touch wiring arranged in the non-display area and a second touch wiring arranged on the first touch wiring, a front member arranged on the first touch electrode, the second touch electrode, the first touch wiring, and the second touch wiring and including a transmissive portion and a blocking portion, and a first touch wiring overlapping with the transmissive portion arranged in at least a portion of the non-display area, wherein the first touch wiring is arranged in an area overlapping with the transmissive portion and may include at least two or more patterns.

[0020] A display device according to still another embodiment of the present specification includes a substrate including a display area and a non-display area adjacent to the display area, a first touch wiring arranged in the non-display area and a second touch wiring arranged on the first touch wiring, and a first touch electrode, a front member arranged on the second touch electrode and including a transmissive portion and a blocking portion, wherein the second touch wiring arranged in the transmissive portion of the non-display area has an uneven bottom surface. The problems to be solved by the embodiments of the present specification are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. Effect of the Invention

[0021] The display device according to the embodiment of the present specification can include a pattern on the touch wiring, thereby solving the problem that the uneven brightness contrast is visually perceived by the user when the display device is not operating.

[0022] In the display device according to the embodiments of the present specification, the touch wiring pattern diffuses light incident from the outside and increases the amount of light transmitted to the outside, thereby solving the problem of uneven brightness of the display device.

[0023] The display device according to the embodiment of the present specification can improve the reliability of the product by forming a uniform brightness ratio of the display device.

[0024] The display device according to the embodiments of the present specification reduces or reduces the uneven brightness of the display device so that it is not exposed to the user's field of view, thereby forming a uniform brightness ratio of the display device, thereby providing the user with a highly aesthetic feeling.

[0025] The effects of the present specification are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a diagram showing a display device according to an embodiment of the present specification. [Diagram 2] FIG. 1 is a cross-sectional view of a display device according to an embodiment of the present specification. [Diagram 3] FIG. 1 is a plan view of a display device according to an embodiment of the present specification. [Figure 4] FIG. 2 illustrates a touch sensor layer incorporated into a display device according to an embodiment of the present specification. [Diagram 5] FIG. 2 is a plan view illustrating a touch sensor layer disposed on a substrate in accordance with an embodiment of the present disclosure. [Figure 6] FIG. 2 is a cross-sectional view illustrating a touch sensor layer disposed on a substrate in accordance with an embodiment of the present disclosure. [Figure 7] 6 is an enlarged plan view of a part of the display area of ​​the display device of FIG. 5. [Figure 8] 8 is an enlarged plan view of a portion of the outer region of the display device of FIG. 7. [Figure 9] 9 is an enlarged cross-sectional view of a portion of the touch wiring arranged in the non-display area of ​​FIG. 8. [Figure 10] FIG. 2 is a plan view of a touch trace according to an embodiment of the present specification. [Figure 11] FIG. 13 is a plan view of a touch wiring according to another embodiment of the present specification. [Figure 12a] 11 is an optical microscope photograph of a display device including touch wiring on which a pattern is not formed according to an experimental example. [Figure 12b] 1 is an optical microscope photograph of a display device including patterned touch wiring as herein; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] The advantages and features of the present specification, and the methods for achieving them, will become clear from the detailed description of the embodiments with accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but may be configured in various different forms, and the embodiments are provided merely to ensure that the disclosure of the present specification is complete and to fully inform those skilled in the art of the present specification of the scope of the invention, and the present specification is only defined by the scope of the claims.

[0028] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are illustrative, and are not limited to the matters illustrated in the drawings. The same reference numerals refer to the same components throughout the specification. In addition, when describing this specification, if it is determined that a specific description of related known technology may unnecessarily obscure the gist of this specification, the detailed description will be omitted. When the terms "include", "have", "be made", etc. are used in this specification, other parts may be added since "only" is not used. When a component is expressed in the singular, it includes the case where it includes a plural, unless otherwise expressly stated.

[0029] When interpreting elements, they are to be interpreted as including an error range even if there is no separate explicit description of the error range.

[0030] When describing a positional relationship, for example when the positional relationship of two parts is described using terms such as "above," "upper," "lower," "next to," etc., one or more other parts may be located between the two parts, unless, for example, "immediately" or "directly" is used.

[0031] When describing a temporal relationship, when the temporal precedence relationship is described using the terms "after," "following," "next," "before," etc., it may also include cases where things are not consecutive, since words such as "immediately" or "directly" are not used.

[0032] 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 used merely to distinguish one component from another. Therefore, the first component referred to below may be the second component within the technical concept of this specification.

[0033] In describing components in this specification, terms such as first, second, A, B, (a), (b), etc. may be used. Such terms are merely intended to distinguish the components from other components, and do not limit the nature, order, sequence, number, etc. of the components. When a component is described as being "coupled," "connected," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that other components may be "intervened" between each component that may be indirectly connected or connected without any particular explicit description.

[0034] "At least one" should be understood to include all combinations of one or more of the associated components. For example, the meaning of "at least one of a first, second, and third component" includes not only the first, second, or third component, but all combinations of two or more of the first, second, and third components.

[0035] In this specification, the term "apparatus" may include a display device such as a liquid crystal module (LCM) or an organic light emitting display module (OLED module) including a display panel and a driver for driving the display panel, and may also include a set electronic apparatus or set device or set apparatus such as a notebook computer, a television, a computer monitor, an automotive apparatus or other form of a vehicle, which is a complete product or final product including an LCM or an OLED module, and a mobile electronic apparatus such as a smartphone or an electronic pad.

[0036] Therefore, the device in this specification may include a display device itself such as an LCM, an OLED module, etc., and a set device which is an application product or a final consumer device including an LCM, an OLED module, etc.

[0037] In some embodiments, an LCM or OLED module including a display panel and a driver may be referred to as a "display device," and an electronic device including the LCM or OLED module as a completed product may be referred to as a "set device." For example, the display device may include a liquid crystal (LCD) or organic light emitting diode (OLED) display panel and a source PCB that is a controller for driving the display panel. The set device may further include a set PCB that is a set controller electrically connected to the source PCB and drives the entire set device.

[0038] The display panel used in the embodiments of the present specification may be any type of display panel such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel, and the embodiments are not limited thereto. For example, the display panel may be a display panel that can generate sound by vibrating with a vibration device according to the embodiments of the present specification. The display panel applied to the display device according to the embodiments of the present specification is not limited to the shape or size of the display panel.

[0039] The features of the various embodiments of this specification may be combined or combined with each other, either partially or in whole, and may be technically interlocked and driven in various ways, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship.

[0040] The following is a description of the embodiments of the present specification with reference to the accompanying drawings and examples: The scales of the components shown in the drawings are different from the actual scales for the convenience of explanation, and are not limited to the scales shown in the drawings.

[0041] Various embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

[0042] FIG. 1 is a diagram showing a display device according to an embodiment of the present specification.

[0043] Referring to FIG. 1, a display device according to an embodiment of the present specification can provide a function for displaying an image and a function for touch sensing.

[0044] In the following description, it is assumed that the light emitting display device is an organic light emitting display device, but the type of the light emitting element layer is not limited thereto.

[0045] In order to provide an image display function, the display device according to the embodiments of the present specification may include a display panel DISP on which a number of data lines and a number of gate lines are arranged and in which a number of sub-pixels SP defined by the number of data lines and the number of gate lines are arranged, a data driving circuit DDC for driving the number of data lines, a gate driving circuit GDC for driving the number of gate lines, and a display controller DCTR for controlling the operation of the data driving circuit DDC and the gate driving circuit GDC.

[0046] Each of the data driving circuit DDC, the gate driving circuit GDC, and the display controller DCTR may be configured as one or more individual components. For example, two or more of the data driving circuit DDC, the gate driving circuit GDC, and the display controller DCTR may be integrated into one component. For example, the data driving circuit DDC and the display controller DCTR may be configured as one integrated circuit chip (IC chip).

[0047] In order to provide a touch sensing function, a display device according to an embodiment of the present specification may include a touch panel TSP including a number of touch electrodes, and a touch sensing circuit TSC that supplies a touch driving signal to the touch panel TSP, detects a touch sensing signal from the touch panel TSP, and senses whether or not a user has touched the touch panel TSP or the touch position (touch coordinates) based on the detected touch sensing signal.

[0048] The touch sensing circuit TSC may include a touch drive circuit TDC that supplies a touch drive signal to the touch panel TSP and detects a touch sensing signal from the touch panel TSP, and a touch controller TCTR that senses the presence or absence of a user's touch on the touch panel TSP and / or the touch position based on the touch sensing signal detected by the touch drive circuit TDC.

[0049] The touch driving circuit TDC may include a first circuit unit that supplies a touch driving signal to the touch panel TSP and a second circuit unit that detects a touch sensing signal from the touch panel TSP.

[0050] The touch driving circuit TDC and the touch controller TCTR may be configured as separate components or may be integrated into one component.

[0051] Each of the data driving circuit DDC, the gate driving circuit GDC, and the touch driving circuit TDC may be configured as one or more integrated circuits, and may be configured as a COG (Chip On Glass) type, a COF (Chip On Film) type, a TCP (Tape Carrier Package) type, etc. in terms of electrical connection with the display panel DISP, and the gate driving circuit GDC may also be configured as a GIP (Gate In Panel) type.

[0052] Each of the circuit configurations DDC, GDC, and DCTR for driving the display and the circuit configurations TDC and TCTR for touch sensing may be configured as one or more individual components. For example, one or more of the circuit configurations DDC, GDC, and DCTR for driving the display and one or more of the circuit configurations TDC and TCTR for touch sensing may be functionally integrated and configured as one or more components.

[0053] The data driving circuit DDC and the touch driving circuit TDC may be integrated into one or more integrated circuit chips. When the data driving circuit DDC and the touch driving circuit TDC are integrated into two or more integrated circuit chips, each of the two or more integrated circuit chips may have a data driving function and a touch driving function.

[0054] The touch panel TSP may include a number of touch electrodes to which a touch driving signal can be applied or a touch sensing signal can be detected, a number of touch wirings for connecting the plurality of touch electrodes to a touch driving circuit TDC, and the like.

[0055] The touch panel TSP may be present outside the display panel DISP. For example, the touch panel TSP and the display panel DISP may be fabricated separately and then combined. This touch panel TSP is called an external type or an add-on type, but is not limited to these terms.

[0056] The touch panel TSP may be embedded inside the display panel DISP. When the display panel DISP is manufactured, touch sensor structures such as a number of touch electrodes and a number of touch wirings constituting the touch panel TSP may be formed together with electrodes and signal lines for driving the display. This touch panel TSP is called an embedded type, but is not limited to this term. In the following description, it is assumed that the touch panel TSP is an embedded type, but the touch panel TSP is not limited thereto.

[0057] Fig. 2 is a cross-sectional view of a display device according to an embodiment of the present specification, and Fig. 3 is a plan view of the display device according to an embodiment of the present specification.

[0058] 2 and 3, a display device 100 according to an embodiment of the present disclosure may include a substrate including a display area AA and a non-display area NA, and a front member 800 including a transmissive portion GT and a blocking portion GB.

[0059] 2 and 3, the substrate 110 according to the embodiment of the present specification may include a display area (active area) AA and a non-active area (non-active area) NA surrounding the display area AA. The non-active area NA of the substrate 110 may be adjacent to the display area AA and disposed outside the display area AA.

[0060] The display area AA may be an area in which a plurality of sub-pixels SP are arranged to display an image. Each of the sub-pixels SP may be an individual unit that emits light, and each sub-pixel SP may emit, for example, but is not limited to, red, green, blue, or white light.

[0061] The display area AA may include an organic light emitting element. A thin film transistor and a light emitting element layer may be disposed in each of the sub-pixels SP. For example, a display element for displaying an image and a circuit unit for driving the display element may be disposed in each of the sub-pixels SP.

[0062] The non-display area NA is an area where an image is not displayed, and may be an area where various wirings and driving circuits for driving the sub-pixels SP arranged in the display area AA are arranged. For example, various ICs and driving circuits such as a gate driver IC and a data driver IC may be arranged in the non-display area NA. The non-display area NA may be a bezel area, and is not limited to the term.

[0063] The non-display area NA may be disposed around the display area AA as shown in Figures 2 and 3. For example, the non-display area NA may be a region surrounding the display area AA. The non-display area NA may be a region extending from the display area AA. Alternatively, the non-display area NA may be a region in which the sub-pixels SP are not disposed, and is not limited thereto.

[0064] 2 and 3, the non-display area NA is shown surrounding the rectangular display area AA, but the shape of the display area AA and the shape and arrangement of the non-display area NA adjacent to the display area AA are not limited to the examples shown in FIGS. 2 and 3. The display area AA and the non-display area NA may have a shape suitable for the design of an electronic device equipped with the display device 100. In the case of a display device of a wearable device, the display device may have a circular shape like a wristwatch, and the embodiments of the present specification may also be applied to a free-form display device applicable to a vehicle meter panel, etc. Exemplary shapes of the display area AA may be, but are not limited to, a pentagon, a hexagon, a circle, an ellipse, etc.

[0065] A plurality of touch electrodes for touch sensing and a plurality of touch connecting electrodes electrically connected to the plurality of touch electrodes may be disposed in the display area AA of the substrate 110. The display area AA may also be referred to as a touch sensing area where touch sensing is possible.

[0066] The substrate 110 can support various components of the display device. The substrate 110 can be made of a plastic material having flexibility. For example, the substrate 110 can be made of polyimide (PI). When the substrate 110 is made of polyimide, a manufacturing process of the light emitting display device is performed in a state where a supporting substrate made of glass is disposed under the substrate 110, and the supporting substrate can be released after the manufacturing process of the display device is completed. In addition, after the supporting substrate is released, a back plate (or plate) for supporting the substrate 110 can be disposed under the substrate 110.

[0067] When the substrate 110 is made of polyimide, moisture may penetrate the substrate 110 made of polyimide and may progress to the thin film transistor or light emitting element layer, thereby degrading the performance of the display device. The display device according to the embodiment of the present specification may be made of two polyimides to prevent the degradation of the performance of the display device due to moisture penetration. In addition, by forming an inorganic film between the two polyimides, moisture may be prevented from penetrating the lower polyimide, thereby improving the performance reliability of the product. The inorganic film may be a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or a multi-layer thereof, but is not limited thereto.

[0068] The substrate 110 may also be referred to as a concept including elements and functional layers formed on the substrate 110, such as a switching element, a thin film transistor connected to the switching element, an organic light-emitting element connected to the thin film transistor, and a protective layer, but is not limited thereto.

[0069] A display panel DISP may be disposed on the substrate 110. The display panel DISP is a panel on which images are generated, and may include display elements for generating images, wiring for driving the display elements, a driving circuit, and various other components.

[0070] The display panel DISP may display an image by arranging a number of pixels SP in a matrix form. The display panel DISP may also include a number of touch electrodes incorporated in the display panel DISP. Therefore, the presence or absence of a touch and touch coordinates, etc., may be detected based on a change in capacitance formed in the number of touch electrodes by a user's touch.

[0071] The display panel DISP may include a thin film transistor 120, a light emitting element layer 200, a protective layer 300, and a touch sensor layer 400. The thin film transistor 120, the light emitting element layer 200, the protective layer 300, and the touch sensor layer 400 will be described later with reference to FIG.

[0072] A polarizing plate 600 may be disposed on the touch sensor layer 400. The polarizing plate 600 may selectively transmit light to reduce reflection of external light incident on the display device. For example, the display panel DISP includes various metal materials applied to the thin film transistor 120, the light emitting element layer 200, and wiring, etc. Thus, external light incident on the display device may be reflected from the metal materials, and the visibility of the display device 100 may be reduced due to the reflection of the external light. Thus, the polarizing plate 600 may be disposed on one side of the display device 100 to prevent reflection of the external light and improve the outdoor visibility of the display device 100. However, the components of the display device 100 shown in FIG. 2 are merely exemplary, and the polarizing plate 600 may be omitted depending on the structure of the display device 100, etc.

[0073] A first adhesive layer 500 may be formed between the touch sensor layer 400 and the polarizing plate 600, and the polarizing plate 600 may be adhered and disposed on the touch sensor layer 400. The first adhesive layer 500 may be made of a material having adhesive properties, such as, but not limited to, OCA (Optically Clear Adhesive), PSA (Pressure Sensitive Adhesive), etc.

[0074] The front member 800 is disposed on the polarizing plate 600. The front member 800 can protect the polarizing plate 600 and the display panel DISP located under the front member 800 from external impact, moisture, heat, and the like. The front member 800 can be made of a material having impact resistance and light transmittance. For example, the front member 800 can be a substrate made of glass or a film made of a plastic material such as polymethylmethacrylate (PMMA), polyimide (PI), or polyethylene terephthalate (PET), but is not limited thereto. In addition, the front member 800 is an exemplary name, and can be called various names such as a cover window, a window cover, or a cover glass, but is not limited thereto.

[0075] The front member 800 may include a transmissive portion GT and a blocking portion GB. The blocking portion GB of the front member 800 may be formed to surround the transmissive portion GT of the front member 800.

[0076] The transmissive portion GT of the front member 800 may be disposed such that a portion of the display area AA and a portion of the non-display area NA overlap each other. The transmissive portion GT of the front member 800 may be formed transparent so that light emitted from the display panel DISP including the light emitting device layer 200 can be transmitted to the outside of the display device 100 and a user can view an image provided by the display device 100.

[0077] The blocking portion GB of the front member 800 may be disposed to overlap a portion of the non-display area NA adjacent to the display area AA. The blocking portion GB of the front member 800 may be formed to be opaque so that wiring, driving circuits, and various components formed under the front member 800 of the display device 100 are not visible to a user.

[0078] The blocking portion GB may include a light-shielding material such as a pigment, a dye, or carbon black. For example, the blocking portion GB may be coated with black ink. The blocking portion GB may be formed as a separate part on the rear edge of the front member 800 and attached to the front member 800.

[0079] The front member 800 may include a transmissive portion GT in an area overlapping the display area AA. The front member 800 may include a transmissive portion GT and a blocking portion GB in an area overlapping the non-display area NA.

[0080] After the manufacturing process of the display panel DISP on the substrate 110 is completed, the front member 800 can be bonded to the substrate 110 on which the display panel DISP is disposed by a bonding process.

[0081] During the bonding process, if the transmissive portion GT and blocking portion GB of the front member 800 are misaligned with the display area AA and non-display area NA of the substrate 110, the blocking portion GB of the front member 800 may hide a portion of the display area AA of the substrate 110. If the blocking portion GB of the front member 800 partially overlaps with the display area AA, a problem may occur in which the size of the display area AA where an image is displayed is reduced. The front member 800 should have the transmissive portion GT formed in a portion of the non-display area NA adjacent to the display area AA. For example, the blocking portion GB of the front member 800 should be disposed to be separated from the display area AA of the substrate 110 so as not to overlap with the display area AA of the substrate 110.

[0082] A portion of the touch wiring disposed in the non-display area NA may not be hidden by the blocking portion GB formed on the front member 800, and may be exposed by the transmissive portion GT of the front member 800. For example, the portion of the touch wiring may be disposed in an area overlapping with the transmissive portion of the front member.

[0083] The touch wiring formed in the non-display area NA will be described later with reference to FIG.

[0084] A second adhesive layer 700 may be formed between the polarizer 600 and the front member 800, and the front member 800 may be adhered and disposed on the polarizer 600. The second adhesive layer 700 may be made of a material having adhesive properties, such as, but not limited to, OCA (Optically Clear Adhesive), PSA (Pressure Sensitive Adhesive), etc.

[0085] FIG. 4 illustrates a touch sensor layer incorporated in a display device according to an embodiment of the present disclosure.

[0086] 4, a number of sub-pixels SP may be arranged on a substrate 110 in a display area AA of a display panel DISP.

[0087] Each subpixel SP may include a light emitting element ED, a first transistor T1 for driving the light emitting element ED, a second transistor T2 for transmitting a data voltage VDATA to a first node N1 of the first transistor T1, a storage capacitor Cst for maintaining a constant voltage during one frame, etc.

[0088] The first transistor T1 may include a first node N1 to which a data voltage VDATA may be applied, a second node N2 electrically connected to the light emitting element ED, and a third node N3 to which a driving voltage VDD is applied from a driving voltage line DVL. 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. The first transistor T1 may be a driving transistor for driving the light emitting element ED.

[0089] The light emitting element ED may include an anode electrode, a light emitting layer, and a cathode electrode, the anode electrode being electrically connected to the second node N2 of the first transistor T1, and the cathode electrode receiving a ground voltage VSS.

[0090] The light emitting layer of the light emitting element ED may be an organic light emitting layer including an organic material. In this case, the light emitting element ED may be an organic light emitting diode (OLED).

[0091] The second transistor T2 is turned on and off by a scan signal SCAN applied through a gate line GL, and is electrically connected between a first node N1 of the first transistor T1 and a data line DL. The second transistor T2 can be referred to as a switching transistor.

[0092] When the second transistor T2 is turned on by the scan signal SCAN, it transfers the data voltage VDATA supplied through the data line DL to the first node N1 of the first transistor T1.

[0093] The storage capacitor Cst may be electrically connected between a first node N1 and a second node N2 of the first transistor T1.

[0094] Each subpixel SP may have a 2T1C structure including two transistors T1, T2 and one capacitor Cst, and may optionally further include one or more transistors or one or more capacitors.

[0095] The storage capacitor Cst may be an external capacitor designed outside the first transistor T1, rather than a parasitic capacitor (e.g., Cgs or Cgd), which is an internal capacitor that may exist between the first node N1 and the second node N2 of the first transistor T1.

[0096] Each of the first transistor T1 and the second transistor T2 may be an n-type transistor or a p-type transistor.

[0097] As described above, the display panel DISP is provided with circuit elements such as the light-emitting element ED, two or more transistors T1, T2, and one or more capacitors Cst. Since the circuit elements (particularly, the light-emitting element ED) are vulnerable to external moisture, oxygen, etc., a protective layer 300 for preventing external moisture and oxygen from penetrating into the circuit elements (particularly, the light-emitting element ED) may be provided on the display panel DISP.

[0098] The protective layer 300 may be formed in one single layer, but may also be arranged in multiple layers.

[0099] In the display device according to the embodiment of the present specification, a touch sensor layer 400 may be formed on the protective layer 300. The touch sensor layer 400 may include a first touch electrode 440_R and a second touch electrode 440_T.

[0100] During touch sensing, a touch driving signal or a touch sensing signal may be applied to the first touch electrode 440_R and the second touch electrode 440_T. Accordingly, during touch sensing, a potential difference may be formed between the first touch electrode 440_R and the second touch electrode 440_T, which are disposed with the protective layer 300 interposed therebetween, and the cathode electrode, and unnecessary parasitic capacitance may be formed. Since the parasitic capacitance may reduce touch sensitivity, in order to reduce the parasitic capacitance, the distance between the first touch electrode 440_R and the second touch electrode 440_T and the cathode electrode may be designed to be a certain value (e.g., 1 μm) or more in consideration of the panel thickness, the panel manufacturing process, the display performance, and the like.

[0101] FIG. 5 is a top view illustrating a touch sensor layer disposed on a substrate in accordance with an embodiment of the present disclosure.

[0102] Referring to FIG. 5, at least one first touch block Rx and one second touch block Tx may be disposed in a display area AA of a display device 100. As shown in FIG.

[0103] The first touch block Rx may include at least one first touch electrode 440_R and at least one first touch connecting electrode 420. The second touch block Tx may include at least one second touch electrode 440_T and at least one second touch connecting electrode 440_C. The first touch block Rx and the second touch block Tx may have, but are not limited to, a metal mesh structure.

[0104] At least one first touch block Rx extends along a first direction (or X-axis direction) and may include at least one first touch electrode 440_R arranged to have a certain interval from each other.

[0105] At least one first touch electrode 440_R may be electrically connected to each other in a first direction (or X-axis direction). For example, at least one first touch electrode 440_R arranged along the first direction (or X-axis direction) may be electrically connected to each other by at least one first touch connection, which will be described later.

[0106] At least one first touch block Rx may be spaced apart from each other at regular intervals along the second direction (or the Y-axis direction).

[0107] At least one second touch block Tx extends along a second direction (or the Y-axis direction). The second touch block Tx may include at least one second touch electrode 440_T arranged to have a certain interval from each other.

[0108] At least one second touch electrode 440_T may be continuously formed without interruption in the second direction (or Y-axis direction). For example, at least one second touch electrode 440_T arranged along the second direction (or Y-axis direction) may be electrically connected to each other by at least one second connecting electrode 440_C described later. Thus, at least one second touch electrode 440_T arranged along the second direction (or Y-axis direction) may be electrically connected to each other.

[0109] At least one second touch block Tx may be spaced apart from each other at regular intervals along the first direction (or the X-axis direction).

[0110] The first touch block Rx and the second touch block Tx may be spaced apart from each other to have a certain distance therebetween, and thus the first touch block Rx and the second touch block Tx may be electrically isolated from each other.

[0111] According to another embodiment, the first touch block Rx and the second touch block Tx may have a metal mesh structure. The first touch electrode 440_R of the first touch block Rx and the second touch electrode 440_T of the second touch block Tx may have a metal mesh structure. The first touch block Rx and the second touch block Tx may have a diamond shape including the metal mesh structure. The metal mesh structure will be described later with reference to FIG. 7. In this specification, the first touch block Rx is described as extending in a first direction (or X-axis direction) and the second touch block Tx is described as extending in a second direction (or Y-axis direction), but the opposite may be true.

[0112] A touch wiring 450 and a touch driver TDC may be disposed in the non-display area NA of the display device 100. The touch wiring 450 may include a first touch wiring 451 and a second touch wiring 452.

[0113] Each of the at least one first touch block Rx and the at least one second touch block Tx may be electrically connected to a corresponding touch wiring 450. Each of the at least one first touch block Rx and the plurality of second touch blocks Tx may be connected to a touch driver TDC disposed in a portion of the non-display area NA by the touch wiring 450. Each of the first touch block Rx and the second touch block Tx may be connected to the touch driver TDC to transmit or receive a corresponding signal.

[0114] The touch driver TDC is connected to the first touch block Rx and the plurality of second touch blocks Tx to transmit or receive signals. For example, the touch driver TDC may receive a touch sensing signal from the first touch block Rx or the first touch electrode 440_R. The touch driver TDC may also transmit a touch driving signal to the second touch block Tx or the second touch electrode 440_T. The touch driver TDC may sense a user's touch using mutual capacitance between the first touch block Rx or the plurality of first touch electrodes 440_R and the second touch block Tx or the second touch electrode 440_T. For example, when a touch operation is performed on the display device 100, a capacitance change may occur between the first touch block Rx or the first touch electrode 440_R and the second touch block Tx or the second touch electrode 440_T. The touch driver TDC may sense the capacitance change to detect touch coordinates.

[0115] 6 is a cross-sectional view showing a touch sensor layer disposed on a substrate according to an embodiment of the present specification. The display device 100 shown in FIG. 6 is substantially the same as the display device shown in FIG. 2 except for the display panel DISP, so a duplicated description will be omitted.

[0116] Referring to FIG. 6, a display panel DISP according to an embodiment of the present specification may include a touch sensor layer 400.

[0117] A semiconductor layer 121 may be disposed in the display area AA on the substrate 110. The semiconductor layer 121 may be made of polycrystalline silicon. Polysilicon may be formed by depositing an amorphous silicon (a-Si) material on a buffer layer, and performing a dehydrogenation process, a crystallization process, an activation process, and a hydrogenation process, and the polysilicon may be patterned to form the semiconductor layer 121. When the semiconductor layer 121 is made of polysilicon, the thin film transistor 120 may be a low temperature polysilicon (LTPS) thin film transistor using LTPS. Since the polysilicon material has high mobility, when the semiconductor layer 121 is made of polysilicon, it has the advantages of low energy consumption and excellent reliability.

[0118] Also, the semiconductor layer 121 may be made of amorphous silicon (a-Si) or various organic semiconductor materials such as pentacene, etc. As another example, the semiconductor layer 121 may be made of an oxide.

[0119] A first insulating layer 122 may be disposed on the semiconductor layer 121. The first insulating layer 122 may insulate the gate electrode 123 and the semiconductor layer 121.

[0120] The first insulating layer 122 may be formed of an insulating material such as silicon nitride (SiNx) or silicon oxide (SiOx), or may be formed of an insulating organic material, etc. The first insulating layer 122 may have holes to electrically connect the source electrode 125S and the drain electrode 125D to the semiconductor layer 121, respectively.

[0121] A gate electrode 123 may be disposed on the first insulating layer 122 to overlap the semiconductor layer 121 in the display area AA. The gate electrode 123 may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), copper (Cu), titanium (Ti), aluminum (Al), chromium (Cr), gold (Au), nickel (Ni), neodymium (Nd), tungsten (W), and gold (Au), or an alloy thereof, but is not limited thereto.

[0122] A second insulating layer 124 may be disposed on the gate electrode 123. The second insulating layer 124 may be formed of an insulating material such as silicon nitride (SiNx) or silicon oxide (SiOx), or may be formed of an insulating organic material. The second insulating layer 124 may have holes to electrically connect each of the source electrode 125S and the drain electrode 125D to the semiconductor layer 121.

[0123] A source electrode 125S and a drain electrode 125D may be disposed on the second insulating layer 124 in the display area AA.

[0124] The source electrode 125S and the drain electrode 125D disposed in the display area AA are electrically connected to the semiconductor layer 121 through holes in the first insulating layer 122 and the second insulating layer 124.

[0125] The source electrode 125S and the drain electrode 125D may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), copper (Cu), titanium (Ti), aluminum (Al), chromium (Cr), gold (Au), nickel (Ni), and neodymium (Nd) or an alloy thereof, but are not limited thereto. For example, the source electrode 125S and the drain electrode 125D may be formed as a three-layer structure of titanium (Ti) / aluminum (Al) / titanium (Ti) made of a conductive metal material, but are not limited thereto.

[0126] A connecting electrode may be further disposed on the source electrode 125S and the drain electrode 125D. A current and a signal of the thin film transistor 120 may be transmitted to the light emitting element layer 200 through the connecting electrode disposed between the drain electrode 125D and the light emitting element layer 200.

[0127] A planarization layer 126 may be disposed on the source electrode 125S and the drain electrode 125D. The planarization layer 126 may protect the thin film transistor disposed thereunder, and may reduce or planarize steps due to various patterns.

[0128] The planarization layer 126 may be disposed in a portion of the display area AA and the non-display area NA.

[0129] The planarization layer 126 may be formed of at least one of an acrylic resin, an epoxy resin, a phenol resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene resin, and a polyphenylene sulfide resin, but is not limited thereto.

[0130] The planarization layer 126 may have holes for electrically connecting the source electrode 125S or the drain electrode 125D to the anode electrode 210.

[0131] The planarization layer may be arranged in a single layer, but may be arranged in two or more layers in consideration of the arrangement of electrodes. This is because the number of various signal wirings increases as the resolution of the display device 100 increases, so the planarization layer may be configured in two or more layers. Since it is difficult to arrange all wirings in one layer while having a minimum interval, an additional layer may be configured. The additional layer creates space in the wiring arrangement, making it easier to design the wiring and / or electrode arrangement. In addition, when a dielectric material is used as the planarization layer configured in multiple layers, the planarization layer may form a capacitance between the metal layers.

[0132] An anode electrode 210 may be disposed on the planarization layer 126. The anode electrode 210 may be electrically connected to the drain electrode 125D through a hole in the planarization layer 126.

[0133] The anode electrode 210 supplies holes to the light emitting layer 230 and may be made of a conductive material with a high work function.

[0134] When the display device 100 is a top emission type, the anode electrode 210 may be disposed using an opaque conductive material as a reflective electrode that reflects light. For example, the anode electrode 210 may be formed of at least one of silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), or an alloy thereof, but is not limited thereto.

[0135] For example, the anode electrode 210 may have a three-layer structure of silver (Ag) / lead (Pd) / copper (Cu), but is not limited thereto.

[0136] A bank layer 220 may be disposed on the anode electrode 210 and the planarization layer 126. The bank layer 220 may partition a plurality of sub-pixels SP, minimize light spreading, and prevent color mixing occurring at various viewing angles.

[0137] The bank layer 220 may have bank holes that expose the anode electrodes 210 corresponding to the light-emitting regions.

[0138] The bank layer 220 may be made of at least one of inorganic insulating materials such as silicon nitride (SiNx) or silicon oxide (SiOx) or organic insulating materials such as BCB (BenzoCycloButene), acrylic resin, or imide resin, but is not limited thereto.

[0139] A spacer may be further disposed on the bank layer 220. The spacer may buffer a space between the substrate 110 on which the light emitting device layer 200 is formed and the upper substrate, thereby minimizing damage to the display device 100 due to an external impact. The spacer may be formed of the same material as the bank layer 220 and may be formed simultaneously with the bank layer 220, but is not limited thereto.

[0140] The light emitting layer 230 may be disposed on the anode electrode 210 and the bank layer 220. The light emitting layer 230 may include one of a red organic light emitting layer, a green organic light emitting layer, a blue organic light emitting layer, and a white organic light emitting layer to emit light of a specific color. When the light emitting layer 230 includes a white organic light emitting layer, a color filter may be disposed on the light emitting element layer 200 to convert white light from the white organic light emitting layer into light of another color. In addition, the light emitting layer 230 may further include, but is not limited to, a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like in addition to the organic light emitting layer.

[0141] A cathode electrode 240 may be disposed on the light-emitting layer 230. The cathode electrode 240 supplies electrons to the light-emitting layer 230 and may be made of a conductive material with a low work function. When the display device 100 is a top emission type, the cathode electrode 240 may be disposed using a transparent conductive material that transmits light, for example, at least one of indium tin oxide (ITO) and indium zinc oxide (IZO), but is not limited thereto.

[0142] Also, the conductive material may be disposed using a semi-transparent material that transmits light, for example, at least one of alloys such as LiF / Al, CsF / Al, Mg:Ag, Ca / Ag, Ca:Ag, LiF / Mg:Ag, LiF / Ca / Ag, and LiF / Ca:Ag, but is not limited thereto.

[0143] A protective layer 300 may be disposed on the cathode electrode 240 of the light emitting device layer 200. The protective layer 300 may protect the light emitting device layer 200 from external moisture, oxygen, or foreign matter. For example, the protective layer 300 may prevent the penetration of external oxygen and moisture to prevent oxidation of the light emitting material and the electrode material.

[0144] The protective layer 300 may be made of a transparent material so that the light emitted from the light emitting layer 230 can be transmitted therethrough.

[0145] The protective layer 300 may include a first protective layer 310, a second protective layer 320, and a third protective layer 330 that block the penetration of moisture and oxygen. The first protective layer 310, the second protective layer 320, and the third protective layer 330 may have a structure in which they are alternately stacked. The protective layer 300 may be made of a transparent material so that light emitted from the light emitting layer 230 can pass through.

[0146] The first protective layer 310 and the third protective layer 330 may be made of at least one inorganic material selected from the group consisting of silicon nitride (SiNx), silicon oxide (SiOx) and aluminum oxide (AlyOz), but are not limited thereto. The first protective layer 310 and the third protective layer 330 may be formed using a vacuum deposition method such as chemical vapor deposition (CVD) or atomic layer deposition (ALD), but are not limited thereto.

[0147] The second protective layer 320 can cover foreign matter or particles that may occur during the manufacturing process, and can also planarize the surface of the first protective layer 310. For example, the second protective layer 320 can be a particle cover layer, and is not limited to the term.

[0148] The second protective layer 320 may be an organic material, for example, a polymer such as silicon oxycarbonyl (SiOCz), epoxy, polyimide, polyethylene, or an acrylate series polymer, but is not limited thereto.

[0149] The second protective layer 320 may be made of a thermosetting or photocurable material that is cured by heat or light.

[0150] A touch sensor layer 400 may be disposed on the protective layer 300. The touch sensor layer is described below with reference to Figures 7 and 8 together.

[0151] The touch sensor layer 400 may include a first touch electrode 440_R, a second touch electrode 440_T, a first touch connecting electrode 420, a second touch connecting electrode 440_C, a first touch wiring 451, and a second touch wiring 452.

[0152] A touch buffer layer 410 may be disposed on the protective layer 300. The touch buffer layer 410 may prevent chemicals (such as a developer or an etchant) used in the manufacturing process of the touch sensor layer 400 or moisture from the outside from penetrating into the light emitting element layer 200 including an organic material. In addition, a problem of a number of touch sensor metals disposed on the upper part of the touch buffer layer 410 being disconnected due to an external impact may be prevented. The touch buffer layer 410 may be a buffer layer and is not limited to the term.

[0153] The touch buffer layer 410 may be formed as a single layer or multiple layers of any one of silicon oxide (SiOx) or silicon nitride (SiNx) or an alloy thereof, but is not limited thereto, or may be formed of an acrylic, epoxy, or siloxane-based material, but is not limited thereto.

[0154] The components formed in each area along the display area AA and the non-display area NA will be described below.

[0155] A first touch connecting electrode 420 may be disposed on the touch buffer layer 410 in the display area AA.

[0156] The first touch connecting electrode 420 disposed in the display area AA may be disposed between adjacent first touch electrodes 440_R in a first direction (or X-axis direction). The first touch connecting electrode 420 may electrically connect a plurality of first touch electrodes 440_R disposed adjacent to each other and spaced apart in the first direction (or X-axis direction).

[0157] The first touch connecting electrode 420 may be disposed to overlap with the second touch connecting electrode 440_C connecting the adjacent second touch electrodes 440_T in the second direction (or the Y-axis direction). The first touch connecting electrode 420 and the second touch connecting electrode 440_C may be formed in different layers and thus may be electrically insulated from each other.

[0158] A third insulating layer 430 may be disposed on the touch buffer layer 410 and the first touch connecting electrode 420. The third insulating layer 430 may be formed in the display area AA and the non-display area NA. The third insulating layer 430 may be a touch insulating layer or an insulating layer, and is not limited to the term.

[0159] The third insulating layer 430 may electrically insulate the first touch connecting electrode 420 from the second touch electrodes 440_T and 440_C.

[0160] The third insulating layer 430 may include a hole to electrically connect the first touch electrode 440_R and the first touch connecting electrode 420 together.

[0161] The third insulating layer 430 can be, but is not limited to, a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or multiple layers thereof.

[0162] A first touch electrode 440_R, a second touch electrode 440_T, and a first touch connecting electrode 440_C may be disposed on the third insulating layer 430 in the display area AA.

[0163] The first touch electrode 440_R and the second touch electrode 440_T may be disposed at a certain distance apart. At least one first touch electrode 440_R adjacent in the first direction (or X-axis direction) may be formed spaced apart from each other. Each of the at least one first touch electrode 440_R adjacent in the first direction (or X-axis direction) may be connected to a first touch connecting electrode 420 disposed between the first touch electrodes 440_R. For example, each first touch electrode 440_R may be connected to the first touch connecting electrode 420 through a hole in the third insulating layer 430. The second touch electrode 440_T adjacent in the second direction (or Y-axis direction) may be connected by a second touch connecting electrode 440_C. The second touch electrode 440_T and the second touch connecting electrode 440_C may be formed in the same layer.

[0164] A touch planarization layer 460 may be disposed on the third insulating layer 430, the first touch electrode 440_R, the second touch electrode 440_T, and the second touch connecting electrode 440_C.

[0165] The touch planarization layer 460 may be disposed to cover the third insulating layer 430, the first touch electrode 440_R, the second touch electrode 440_T, and the second touch connecting electrode 440_C.

[0166] The touch planarization layer 460 may be formed of at least one of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene resin, and a polyphenylene sulfide resin, but is not limited thereto.

[0167] The first touch electrode 440_R, the second touch electrode 440_T, and the second touch connecting electrode 440_C may be formed in the same process.

[0168] A touch wiring 450 may be disposed in the non-display area NA on the touch buffer layer 410. The touch wiring 450 may include a first touch wiring 451 and a second touch wiring 452. The touch wiring 450 may be disposed in a double wiring of the first touch wiring 451 and the second touch wiring 452.

[0169] A first touch wiring 451 may be disposed on the touch buffer layer 410. The first touch wiring 451 may be electrically connected to the second touch wiring 452 in order to stably supply a signal even if the second touch wiring 452 is disconnected due to an external impact and to reduce resistance of the second touch wiring 452 that transmits a signal of the touch driver TDC to the first touch block Rx and the second touch block Tx. For example, the first touch wiring 451 may be electrically connected to the second touch wiring 452 through a hole in the third insulating layer 430.

[0170] A third insulating layer 430 may be disposed on the first touch wiring 451. The third insulating layer 430 may be formed of the same material and in the same process at the same time as when the third insulating layer 430 is formed on the first touch connecting electrode 420 disposed in the display area AA, but is not necessarily limited thereto, and may be formed through patterning by performing a separate process during the performance of the process. The third insulating layer 430 may further include a plurality of holes exposing at least a portion of the first touch wiring 451.

[0171] A first touch wiring 451 disposed on the lower part of the third insulating layer 430 and a second touch wiring 452 disposed on the upper part of the third insulating layer 430 may be electrically connected through a hole in the third insulating layer 430 .

[0172] A second touch wiring 452 may be disposed on the third insulating layer 430. The second touch wiring 452 may transmit a signal (or voltage) from an external module attached or bonded to the touch driver TDC to the first touch block Rx and the second touch block Tx.

[0173] The second touch wiring 452 may be formed of the same material and in the same process as the first touch electrode 440_R, the second touch electrode 440_T, and the second touch connecting electrode 440_C disposed in the display area AA, but is not limited thereto.

[0174] A touch planarization layer 460 may be disposed on the second touch wiring 452. The touch planarization layer 460 may be disposed to cover the second touch wiring 452. The touch planarization layer 460 may planarize the top of the second touch wiring 452.

[0175] The touch planarization layer 460 may be formed of the same material and in the same process as the touch planarization layer disposed in the display area AA, but is not limited thereto.

[0176] At least one of the first touch wiring 451 and the second touch wiring 452 may be disposed to at least partially overlap each other.

[0177] A front member 800 may be disposed on the display panel DISP. The front member 800 may include a transmissive portion GT and a blocking portion GB.

[0178] Of the first touch wiring 451 and the second touch wiring 452 arranged in the non-display area NA, a portion of the first touch wiring 451 and the second touch wiring 452 adjacent to the display area AA may overlap with the transmissive portion GT of the front member 800. Of the first touch wiring 451 and the second touch wiring 452 arranged in the non-display area NA, a portion of the first touch wiring 451 and the second touch wiring 452 adjacent to the display area AA may not overlap with the blocking portion GB of the front member 800.

[0179] Therefore, among the first touch wiring 451 and the second touch wiring 452 arranged in the non-display area NA, a portion of the first touch wiring 451 and the second touch wiring 452 adjacent to the display area AA may be exposed to external light.

[0180] Hereinafter, the touch electrodes arranged in the display area and the touch wiring arranged in the non-display area will be described.

[0181] Fig. 7 is an enlarged plan view of a part of the display area of ​​the display device of Fig. 5. Fig. 7 is an enlarged plan view of a part A of the touch electrode arranged in the display area of ​​Fig. 5.

[0182] 7, the first touch electrode 440_R, the second touch electrode 440_T, the first touch connecting electrode 420, and the second connecting electrode 440_C arranged in the display area AA may be formed in a mesh pattern in which metal lines having a small line width cross each other. The mesh pattern may have a diamond shape. In addition, the shape of the mesh pattern may be, but is not limited to, a square, a pentagon, a hexagon, a circle, an ellipse, etc.

[0183] The first touch electrode 440_R, the second touch electrode 440_T, the first touch connecting electrode 420, and the second touch connecting electrode 440_C may be arranged using an opaque conductive material having low material resistance, and may have a single-layer or multi-layer structure made of a metal material such as, but not limited to, molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Al), titanium / aluminum / titanium (Ti / Al / Ti), and molybdenum / aluminum / molybdenum (Mo / Al / Mo).

[0184] An opening OP may be formed inside the mesh pattern of the first touch electrode 440_R and the second touch electrode 440_T. The opening OP may correspond to a sub-pixel SP. For example, the light emitting element layer 200 may be disposed in the opening OP.

[0185] The first touch electrode 440_R, the second touch electrode 440_T, the first touch connecting electrode 420, and the second touch connecting electrode 440_C are formed so as not to overlap with the red R, green G, and blue B light emitting regions, but to overlap with the bank layer 220 formed in the non-light emitting region, so that even if they are formed of an opaque conductive material, a decrease in aperture ratio and transmittance can be prevented.

[0186] Fig. 8 is an enlarged plan view of a part of an outer region of the display device of Fig. 5. Fig. 8 is an enlarged plan view of a part B of the touch electrode and the touch wiring in the outer region of Fig. 5.

[0187] 8, at least one touch wiring 450 disposed in the non-display area NA may electrically connect the touch driver TDC to each of the first and second touch blocks Rx and Tx to transmit a signal of the touch driver TDC to the corresponding first and second touch blocks Rx and Tx. The number of touch wirings and the length of the touch wirings may increase in order to transmit a signal of the touch driver TDC disposed in a portion of the non-display area NA to each of the first and second touch blocks Rx and Tx. This may cause a problem of an increase in resistance of the touch wiring or an increase in RC delay. If the resistance of the touch wiring increases or the RC delay increases, a signal delay occurs when a signal of the touch driver TDC is transmitted to the touch block, and a problem of a slow response speed may occur when a user touches the display device.

[0188] Therefore, the touch wiring should be designed to have a line width greater than that of the touch electrode disposed in the display area AA in order to solve the problem of increased resistance or RS delay (RC delay) of the touch wiring. For example, the touch wiring 450 disposed in the non-display area NA has a line width greater than that of the first touch electrode 440_R and the second touch electrode 440_T disposed in the display area AA.

[0189] 8, the blocking portion GB of the front member 800 may be disposed in a portion of the non-display area NA. Thus, the blocking portion GB of the front member 800 may overlap a portion of the touch wiring 450 to block external light from entering the non-display area or to prevent components such as metal wiring and driving circuits disposed under the front member 800 from being viewed by a user.

[0190] The transmissive portion GT of the front member 800 may be disposed in the display area AA and the non-display area NA. For example, in order to prevent a misalignment problem in which the blocking portion GB of the front member 800 overlaps with a part of the display area AA during a bonding process of the substrate 110 and the front member 800, the front member 800 may include the transmissive portion GT of the front member 800 in a part of the non-display area NA adjacent to the display area AA of the substrate 110. Thus, the transmissive portion GT of the front member 800 may overlap with a part of the touch wiring 450, and a part of the touch wiring 450 may be exposed to the outside of the display device 100 through the transmissive portion GT of the front member 800.

[0191] When the display device 100 is not in operation, external light may be incident on the display device 100. The external light incident on the display device 100 may be reflected by various metal electrodes and wirings arranged on the display device 100.

[0192] When the display device 100 is operated, the brightness is increased by the light emitted from the light emitting device layer 200 of the display device 100, and no difference in the brightness / dark ratio occurs in the display device 100. However, when the display device 100 is not operated, there is a problem that a user may perceive the uneven brightness / dark ratio of the display device 100 due to external light.

[0193] Light reflected by the metal electrodes and wiring formed in the display device 100 may also be transmitted to the outside through the transmission part GT of the transparent front member 800 through which light passes. When the reflected light is transmitted, the reflected light may be blocked by the touch electrodes and touch wiring disposed on the upper part of the display device 100, making it difficult for the reflected light to transmit to the outside of the display device 100. For example, incident light may be reflected by the metal electrodes and wiring of the thin film transistor 120 or the light emitting element layer 200 formed on the lower part of the display device 100 and transmit to the outside of the display device 100, but the reflected light may not be able to transmit to the outside of the display device in an area where the touch wiring 450 arranged to a predetermined thickness is formed.

[0194] Since the touch wiring 450 disposed in the non-display area NA is formed thicker than the touch electrode disposed in the display area AA, the touch wiring that is not hidden by the blocking part GB of the front member 800 may transmit less reflected light to the outside than the surrounding area. As a result, when the user does not operate the display device 100, a problem occurs in that the part where the touch wiring that is not hidden by the blocking part GB of the front member 800 is formed is visually darker than the surrounding area.

[0195] When the display device 100 is not in operation, a portion of the display device 100 appears to have a different contrast ratio, providing the user with a display device that is less aesthetically pleasing.

[0196] Therefore, in the display device 100 according to the embodiment of the present specification, the touch wiring arranged in the non-display area NA in an area overlapping with the transmissive part GT of the front member 800 may include a pattern. The touch wiring arranged in the non-display area NA in an area not overlapping with the blocking part GB of the front member 800 may include a pattern. This can improve the non-uniform brightness of the display device viewed by a user when the display device is not in operation.

[0197] Hereinafter, a pattern of the touch wiring arranged in the non-display area NA according to an embodiment of the present specification will be described with reference to FIGS.

[0198] Fig. 9 is an enlarged cross-sectional view of a portion of the touch wiring disposed in the non-display area of ​​Fig. 8. Fig. 9 is a cross-sectional view taken along line II-II' in Fig. 8. Fig. 10 is a plan view of a first touch wiring according to an embodiment of the present disclosure.

[0199] 9 and 10, a display device 100 according to an embodiment of the present disclosure includes a first touch wiring 451 having a pattern 451a in a part of a non-display area NA and a second touch wiring 452a having a step.

[0200] The pattern 451a of the first touch wiring 451 can have an effect of diffusely reflecting incident light entering the inside of the display device 100, thereby increasing the amount of light transmitted to the outside of the display device 100.

[0201] After forming the pattern 451a of the first touch wiring 451, the third insulating layer 430 and the second touch wiring 452a may be formed. The third insulating layer 430 and the second touch wiring 452a formed on the pattern 451a of the first touch wiring 451 due to the pattern 451a of the first touch wiring 451 may include a plurality of steps or bends.

[0202] When the display device 100 is not operated, external light may enter the display device 100 through the transmissive portion GT of the front member 800. When external light enters the display device 100 in an area where a step or bend is formed in the second touch wiring 452a due to the pattern 451a of the first touch wiring 451, the amount of light reflected by the second touch wiring 452a increases. For example, the light incident on the second touch wiring 452a is diffused by the step of the second touch wiring 452a, and the increased light is emitted to the outside of the display device 100.

[0203] The first touch wiring 451 disposed in the transmissive part GT of the front member 800 may include a pattern including at least two steps. Alternatively, the first touch wiring 451 may include at least one hole H.

[0204] Referring to FIG. 10, the hole H of the first touch wiring 451 may be formed along the second direction (or the Y-axis direction).

[0205] At least one hole H formed in the first touch wiring 451 may at least partially separate the patterns 451a of the first touch wiring 451 from each other.

[0206] At least two patterns 451a of the first touch wiring 451 arranged in an area overlapping with the transmissive part GT of the front member 800 are electrically connected to each other and can transmit or receive the same signal from the touch driving part TDC to or from the touch block of the corresponding display area AA.

[0207] Each of the patterns 451a of the at least two or more first touch wirings 451 arranged in a region overlapping with the transmissive portion GT of the front member 800 may have a smaller thickness than the first touch wiring 451 arranged in a region overlapping with the blocking portion GB of the front member 800. For example, the line widths of the first touch wirings 451 formed in the transmissive portion GT and the blocking portion GB may be the same, and since the first touch wiring 451 formed in the transmissive portion GT further includes a hole H, the line width of the pattern 451a of the first touch wiring 451 formed in the transmissive portion GT may be smaller than the line width of the first touch wiring formed in the blocking portion GB.

[0208] A third insulating layer 430 and a second touch wiring 452 may be disposed on the first touch wiring 451 .

[0209] The second touch wiring 452a disposed in a region overlapping the transmissive portion GT of the front member 800 may have a step or a bend due to the first touch wiring 451 formed under the second touch wiring 452a.

[0210] The amount of external light incident on the display device 100 and transmitted to the outside of the display device 100 increases due to the step or bend of the second touch wiring 452a.

[0211] For example, when the display device 100 is not in operation, a portion of the external light incident on the display device 100 passes through the transmissive portion GT of the front member 800 and enters the second touch wiring 452a disposed in the non-display area NA.

[0212] The second touch wiring 452a includes a plurality of top surfaces and side surfaces, and incident light incident on the top surfaces and side surfaces of the second touch wiring 452a is scattered to the top surfaces and side surfaces of the second touch wiring 452a, increasing the amount of light. The increased light is emitted to the outside of the display device 100 by the second touch wiring 452a.

[0213] As a result, when a user looks at the display device 100, the difference in the light-dark ratio in the transmissive portion GT of the front member 800 arranged in the non-display area NA is minimized, improving the problem of the light-dark ratio appearing dark in areas not hidden by the blocking portion GB of the front member 800, and since it is formed uniformly with the surrounding areas, it is possible to provide the user with a highly aesthetic feeling.

[0214] The second touch wirings 452a and 452 may transmit a signal (or voltage) from an external module bonded to the touch driver TDC to the first touch block Rx and the second touch block Tx arranged in the display area AA. Therefore, the second touch wirings 452a and 452 according to other embodiments may not include a predetermined pattern or hole to prevent an increase in the resistance or RS delay (RC delay) of the wiring.

[0215] FIG. 11 is a plan view of a touch wiring according to another embodiment of the present disclosure.

[0216] Referring to FIG. 11, the first touch wiring 451 may be formed in a mesh-shaped pattern 451a.

[0217] The first touch wiring 451 according to the embodiments of the present specification may include at least two or more patterns 451a and at least one or more holes H, and the shapes of the first touch wiring 451 in Figures 10 and 11 are exemplary and are not limited thereto.

[0218] 12a and 12b are optical microscope images of a display including unpatterned touch wiring according to an example and a display including patterned touch wiring according to the present disclosure, respectively.

[0219] 12a and 12b are photographs taken using an optical microscope of a portion of the display area AA and the non-display area NA of the display device 100 when the display device 100 is not driven.

[0220] 12a, it can be seen that a display device in which a pattern is not formed on the first touch wiring 451 has a portion of the non-display area NA adjacent to the display area AA having a non-uniform brightness ratio C. For example, a portion of the non-display area NA that is not blocked by the blocking portion GB of the front member 800 may appear darker than the surrounding area. Or, a portion of the non-display area NA that is exposed by the transmissive portion GT of the front member 800 may appear darker than the surrounding area.

[0221] Referring to FIG. 12b, it can be seen that the display device in which the pattern 451a is formed on the first touch wiring 451 minimizes non-uniform brightness contrast visually perceived by the user.

[0222] Therefore, since a pattern is formed on the first touch wiring 451, a display device that has a uniform brightness ratio when the device is not driven and can improve product reliability can be provided.

[0223] In addition, since a pattern is formed on the first touch wiring 451, uneven brightness is minimized and is not exposed to the user's field of vision, so that the brightness of the display device viewed by the user is uniform, providing the user with a highly aesthetic feel.

[0224] An embodiment of the present invention can also be described as follows.

[0225] According to an aspect of the present invention, a display device includes a substrate including a display area and a non-display area adjacent to the display area, a first touch wiring disposed in the non-display area and a second touch wiring disposed on the first touch wiring, a front member disposed on the first touch wiring and the second touch wiring and disposed in at least a portion of the non-display area, the front member including a transmissive portion and a blocking portion, wherein the first touch wiring is disposed in an area overlapping with the transmissive portion and may include at least two or more patterns.

[0226] According to some embodiments herein, at least two or more of the patterns may include a step.

[0227] According to some embodiments herein, each of the at least two or more patterns of the first touch wiring may include a step from a bottom surface to a top surface of each of the at least two or more patterns.

[0228] According to some embodiments herein, at least two or more of the patterns may include at least one or more holes.

[0229] According to some embodiments of the present disclosure, at least two or more patterns may be electrically connected.

[0230] According to some embodiments herein, each of the at least two or more patterns can be at least partially spaced apart from one another.

[0231] According to some embodiments of the present disclosure, each of the at least two or more patterns may have a thickness smaller than that of the first touch wiring disposed in the region overlapping with the blocking portion.

[0232] According to some embodiments herein, the first touch wiring may include a mesh shape.

[0233] According to some embodiments of the present disclosure, the second touch wiring disposed in the transparent portion of the non-display area may include a step.

[0234] According to some embodiments of the present specification, a first portion, which is a lower surface between adjacent patterns among the at least two or more patterns, may be lower than a second portion, which is a lower surface of an upper portion of each of the at least two or more patterns.

[0235] According to some embodiments herein, the transmissive portions of the front member may be disposed adjacent portions of the viewing area.

[0236] According to some embodiments of the present specification, the display device may further include a first touch connecting electrode arranged on a substrate of the display area, a third insulating layer arranged on the first touch connecting electrode, and a first touch electrode and a second touch electrode arranged on the third insulating layer.

[0237] According to some embodiments of the present specification, the first touch electrode and the second touch electrode can sense the presence or absence of a touch and the touch position by sensing a change in mutual capacitance (Cm) between the first touch electrode and the second touch electrode.

[0238] According to some embodiments of the present disclosure, the first touch wiring may be formed in the same process as the first touch electrode.

[0239] According to some embodiments of the present disclosure, the second touch wiring may be formed in the same process as the second touch electrode.

[0240] According to some embodiments herein, the first touch wiring and the second touch wiring may be electrically coupled.

[0241] According to some embodiments herein, the first touch wiring may include at least two or more patterns.

[0242] According to some embodiments of the present specification, the display device may further include a thin film transistor arranged on a substrate on which a display area and a non-display area are formed, a light-emitting element layer arranged on the thin film transistor, and a protective layer arranged on the light-emitting element layer, and the first touch wiring and the second touch wiring may be arranged on the protective layer.

[0243] According to another aspect of the present invention, a display device according to an embodiment of the present specification includes a substrate including a display area and a non-display area adjacent to the display area, a first touch electrode arranged in the display area and a second touch electrode arranged on the first touch electrode, a first touch wiring arranged in the non-display area and a second touch wiring arranged on the first touch wiring, a front member arranged on the first touch electrode, the second touch electrode, the first touch wiring, and the second touch wiring and including a transmissive portion and a blocking portion, and a first touch wiring overlapping with the transmissive portion arranged in at least a portion of the non-display area, wherein the first touch wiring is arranged in an area overlapping with the transmissive portion and may include at least two or more patterns.

[0244] According to some embodiments of the present disclosure, the second touch wiring disposed in the transparent portion of the non-display area may include a step.

[0245] According to some embodiments of the present specification, a first portion, which is a lower surface between adjacent patterns among the at least two or more patterns, may be lower than a second portion, which is a lower surface of an upper portion of each of the at least two or more patterns.

[0246] According to some embodiments herein, at least two or more of the patterns may include at least one or more holes.

[0247] According to some embodiments herein, the thickness of the first touch electrode and the second touch electrode may be smaller than the thickness of the first touch wiring and the second touch wiring.

[0248] According to another embodiment of the present specification, there is provided a substrate including a display area and a non-display area adjacent to the display area, a first touch wiring arranged in the non-display area and a second touch wiring arranged on the first touch wiring, and a first touch electrode, a front member arranged on the second touch electrode and including a transmissive portion and a blocking portion, wherein the second touch wiring arranged in the transmissive portion of the non-display area has an uneven bottom surface.

[0249] According to some embodiments of the present specification, the first touch wiring may include at least two or more patterns, and a first portion, which is a lower surface between adjacent patterns among the at least two or more patterns, may be lower than a second portion, which is a lower surface of an upper portion of each of the at least two or more patterns.

[0250] According to some embodiments of the present specification, the first touch wiring may include at least two or more patterns, and each of the at least two or more patterns may be arranged spaced apart from other patterns among the at least two or more patterns.

[0251] Although the embodiments of the present specification have been described in detail above with reference to the accompanying drawings, the present specification is not necessarily limited to such embodiments, and may be modified in various ways within the scope of the technical idea of ​​the present specification. Therefore, the embodiments disclosed in the present specification are for illustration purposes, not for limiting the technical idea of ​​the present specification, and the scope of the technical idea of ​​the present specification is not limited by such embodiments. Therefore, the embodiments described above should be understood to be illustrative and not limiting in all respects. The scope of protection of the present specification should be interpreted by the scope of the claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present specification. [Explanation of symbols]

[0252] 100 display device 110 Substrate 200 Light emitting element layer 300 protective layer 400 Touch Sensor Layer 500 1st adhesive layer 600 modified version 700 2nd adhesive layer

Claims

1. a substrate including a display area and a non-display area adjacent to the display area; a first touch wiring disposed in the non-display area and a second touch wiring disposed on the first touch wiring; a front member disposed on the first touch wiring and the second touch wiring and in at least a part of the non-display area, the front member including a transmissive portion and a blocking portion; Including, The first touch wiring is disposed in a region overlapping the transmissive portion and includes at least one hole; At least two or more patterns including at least two steps in a cross-sectional view are formed in the first touch wiring through the at least one hole, The at least two patterns diffusely reflect light incident through the transmission portion, The second touch wiring has a plurality of steps or a plurality of bends formed in a cross-sectional view corresponding to the at least one hole. Display device.

2. The display device of claim 1 , wherein the at least two patterns are electrically connected to each other.

3. The display device according to claim 1 , wherein each of the at least two or more patterns is at least partially separated from each other.

4. The display device of claim 1 , wherein each of the at least two patterns has a thickness smaller than that of the first touch wiring disposed in an area overlapping the blocking portion.

5. The display device of claim 1 , wherein the first touch wiring has a mesh shape.

6. The display device according to claim 1 , wherein the second touch wiring arranged in the transmissive portion of the non-display region includes a step.

7. The display device of claim 6 , wherein a first portion, which is a lower surface between adjacent patterns among the at least two or more patterns, is lower than a second portion, which is a lower surface of an upper portion of each of the at least two or more patterns.

8. The display device according to claim 1 , wherein the transmissive portion of the front member is disposed adjacent to the display area.

9. A first touch connecting electrode disposed on a substrate of the display area; a third insulating layer disposed on the first touch connecting electrode; a first touch electrode and a second touch electrode disposed on the third insulating layer; The display device of claim 1 further comprising:

10. The display device of claim 9 , wherein the first touch electrode and the second touch electrode sense a change in mutual capacitance between the first touch electrode and the second touch electrode to sense the presence or absence of a touch and a touch position.

11. The display device of claim 1 , wherein the first touch wiring and the second touch wiring are electrically connected to each other.

12. The display device of claim 1 , wherein the first touch wiring arranged in a region overlapping the blocking portion includes the at least two patterns.

13. a thin film transistor disposed on a substrate on which the display area and the non-display area are formed; a light emitting element layer disposed on the thin film transistor; a protective layer disposed on the light-emitting element layer; Further comprising: The display device according to claim 1 , wherein the first touch wiring and the second touch wiring are disposed on the protective layer.

14. a substrate including a display area and a non-display area adjacent to the display area; a first touch electrode disposed in the display area and a second touch electrode disposed on the first touch electrode; a first touch wiring disposed in the non-display area and a second touch wiring disposed on the first touch wiring; a front surface member disposed on the first touch electrode, the second touch electrode, the first touch wiring, the second touch wiring, and at least a part of the non-display area, the front surface member including a transmissive portion and a blocking portion; Including, The first touch wiring is disposed in an area overlapping the transmissive portion disposed in at least a portion of the non-display area, and includes at least one hole; At least two or more patterns including at least two steps in a cross-sectional view are formed in the first touch wiring through the at least one hole, The at least two patterns diffusely reflect light incident through the transmission portion, The second touch wiring has a plurality of steps or a plurality of bends formed in a cross-sectional view corresponding to the at least one hole. Display device.

15. The display device of claim 14 , wherein a first portion, which is a bottom surface between adjacent patterns among the at least two or more patterns, is lower than a second portion, which is a bottom surface of an upper portion of each of the at least two or more patterns.

16. The display device of claim 14 , wherein a thickness of at least one of the first touch electrode and the second touch electrode is smaller than a thickness of at least one of the first touch wiring and the second touch wiring.

17. a substrate including a display area and a non-display area adjacent to the display area; a first touch wiring disposed in the non-display area and a second touch wiring disposed on the first touch wiring; a front member disposed on the first touch wiring, the second touch wiring, and at least a portion of the non-display area, the front member including a transmissive portion and a blocking portion; Including, The first touch wiring includes at least one hole; At least two or more patterns including at least two steps in a cross-sectional view are formed in the first touch wiring through the at least one hole, The at least two patterns diffusely reflect light incident through the transmission portion, The second touch wiring arranged in a region where the non-display region and the transmissive portion overlap has an uneven lower surface. Display device.

18. The display device of claim 17 , wherein a first portion, which is a bottom surface between adjacent patterns among the at least two or more patterns, is lower than a second portion, which is a bottom surface of an upper portion of each of the at least two or more patterns.

19. The display device according to claim 17 , wherein each of the at least two or more patterns is disposed so as to be spaced apart from other patterns among the at least two or more patterns.

20. The display device according to claim 17 , wherein each of the at least two or more patterns is substantially parallel in a region overlapping with the transmissive portion.

Images