Display panel and display device comprising display panel

Abstract

A display panel according to one embodiment of the present specification, comprising a display area in which at least a portion is shown in the shape of a curve and a non-display area adjacent to the display area, comprises a first pixel included in the display area and a second pixel disposed at a position corresponding to the curve of the display area, and a light-blocking member corresponding to the position of the second pixel may be disposed on the second pixel.

Description

Technology Field

[0001] The present specification relates to a display panel having at least a portion of a curved shape and a display device including the same. Background Technology

[0002] Display devices used in computer monitors, TVs, mobile phones, etc., include Organic Light Emitting Display devices (OLEDs) that emit light on their own, and Liquid Crystal Display devices (LCDs) that require a separate light source.

[0003] The scope of application for display devices is expanding to include not only computer monitors and TVs but also personal portable devices. Accordingly, display devices are being implemented in various shapes (e.g., ellipses) (hereinafter referred to as 'non-traditional shapes') in addition to the rectangular shapes that were previously mainly used.

[0004] When a display device is implemented in a non-curved shape, at least a portion of the display area where content is displayed may have a curved shape. However, the pixels contained within the display area that emit light for displaying the content have a rectangular shape. In such cases, a difference may occur between the curved portion of the display area and the shape of the pixels, which may degrade display quality, such as causing the curved portion to appear as a step shape (or step difference). The problem to be solved

[0005] The problem that the embodiments of the present specification aim to solve is to provide a display panel that improves display quality by controlling the amount of light emitted by a pixel by placing a light-blocking member on a pixel placed in a curved area of ​​a display area, and a display device including the same.

[0006] However, the problems of this specification are not limited to those mentioned above, and other technical problems may be inferred from the following embodiments. means of solving the problem

[0007] A display panel according to one embodiment of the present specification, comprising a display area in which at least a portion is shown in the shape of a curve and a non-display area adjacent to the display area, comprises a first pixel included in the display area and a second pixel disposed at a position corresponding to the curve of the display area, and a light-blocking member corresponding to the position of the second pixel may be disposed on the second pixel.

[0008] A display device according to one embodiment of the present specification includes a display panel comprising a display area in which at least a portion is shown in the shape of a curve and a non-display area adjacent to the display area, and a driving circuit for driving the display panel, wherein the display panel includes a first pixel included in the display area and a second pixel disposed at a position corresponding to the curve of the display area, and a light-blocking member corresponding to the position of the second pixel may be disposed on the second pixel.

[0009] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0010] The display panel and display device according to the present specification can improve display quality by controlling the amount of light emitted by a pixel by placing a light-blocking member on a pixel placed in a curved area of ​​a display area.

[0011] However, the effects obtainable in this specification are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which this specification belongs from the description below. Brief explanation of the drawing

[0012] FIG. 1 is an example of a block diagram of a display device according to one embodiment of the present specification. FIG. 2 is a drawing showing an example of a pixel circuit of a display device according to one embodiment of the present specification. FIG. 3 is a drawing for explaining a curved area of ​​a display device according to one embodiment of the present specification. FIG. 4 is a drawing for explaining a pixel of a display device according to one embodiment of the present specification. FIGS. 5 and 6 are drawings for illustrating a cross-section of a display device according to one embodiment of the present specification. FIG. 7 is a drawing for explaining a pixel of a display device according to another embodiment of the present specification. FIGS. 8 and 9 are drawings for illustrating a cross-section of a display device according to another embodiment of the present specification. FIGS. 10 to 13 are drawings for explaining a structure for implementing a touch function of a display device according to an embodiment of the present specification. Specific details for implementing the invention

[0013] The terms used in the embodiments have been selected to be as widely used as possible, taking into account their functions in the present disclosure; however, these may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Additionally, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant explanatory section. Therefore, terms used in the present disclosure should be defined not merely by their names, but based on their meanings and the overall content of the present disclosure.

[0014] When a part of a specification is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0015] The expression "at least one of a, b, and c" as used throughout the specification may encompass 'a alone', 'b alone', 'c alone', 'a and b', 'a and c', 'b and c', or 'a, b, and c all'. The advantages and features of the present invention, and the methods for achieving them, will become clear from the embodiments described below in detail together with the accompanying drawings.

[0016] Shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments in this specification are exemplary, and therefore the embodiments of this specification are not limited to those depicted. Furthermore, in describing embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiment, such detailed description is omitted.

[0017] In cases where terms such as 'includes,' 'have,' or 'consists of' are used in this specification, other parts may be added. When a component is expressed in the singular, it includes cases where it includes the plural unless specifically stated otherwise. Furthermore, in interpreting the component, it is interpreted to include an error range even without separate explicit description.

[0018] In the case of a description of a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on', 'on the upper part', 'on the lower part', or 'next to', one or more other parts may be located between the two parts. When an element or layer is referred to as "on" another element or layer, it includes cases where another layer or element is placed directly on top of another element or in between.

[0019] Additionally, terms such as "first," "second," etc., are used to describe various components, but these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of the present invention.

[0020] The area, length, or thickness of each component described in the specification is illustrated for convenience of explanation and the present invention is not necessarily limited to the area and thickness of the illustrated components.

[0021] The features of each of the various embodiments of this specification may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or together in an associated relationship.

[0022] Furthermore, the terms described below are defined considering their functions in the implementation of this specification, and these may vary depending on the intentions or practices of the user or operator. Therefore, their definitions should be based on the content throughout this specification.

[0023] The transistor constituting the pixel circuit of the present specification may include at least one of an oxide thin film transistor (Oxide TFT), an amorphous silicon transistor (a-Si TFT), and a low temperature poly silicon (LTPS) transistor.

[0024] The following embodiments are described with reference to organic light-emitting display devices. However, the embodiments of the present invention are not limited to organic light-emitting display devices and may be applied to inorganic light-emitting display devices including inorganic light-emitting materials. For example, the embodiments of the present invention may also be applied to quantum dot display devices.

[0025] Expressions such as 'first,' 'second,' and 'third' are terms used to distinguish configurations by embodiment, but the embodiments are not limited to these terms. Therefore, it should be noted that even the same term may refer to different configurations depending on the embodiment.

[0026] Embodiments of the present specification will be described below with reference to the drawings.

[0027] FIG. 1 is an example of a block diagram of a display device according to one embodiment of the present specification.

[0028] Referring to FIG. 1, a display device (100) according to one embodiment of the present specification may include a display panel (110), a gate driving circuit (120), a data driving circuit (130), a timing controller (140), and a touch driving circuit (150) that senses a touch on the display panel (110).

[0029] In the display panel (110), a plurality of gate lines (GL) and a plurality of data lines (DL) are arranged, and a plurality of subpixels (SP) are arranged in the area where the gate lines (GL) and data lines (DL) intersect.

[0030] Additionally, a plurality of touch electrodes may be arranged or embedded in the display panel (110), and a plurality of touch lines (TL) that electrically connect the touch electrodes and the touch driving circuit (150) may be arranged.

[0031] First, the configuration for driving the display in this display device (100) is described as follows: a gate driving circuit (120) controls the driving timing of a subpixel (SP) placed on a display panel (110). Then, a data driving circuit (130) supplies a data voltage corresponding to image data to the subpixel (SP). As a result, the subpixel (SP) emits light at a brightness corresponding to the gradation of the image data to display the image.

[0032] Specifically, the gate driving circuit (120) is controlled by a timing controller (140) and sequentially outputs a scan signal to a plurality of gate lines (GL) arranged on a display panel (110) to control the driving timing of a plurality of subpixels (SP).

[0033] The gate driving circuit (120) may include one or more gate driving integrated circuits (GDICs), and depending on the driving method, it may be located on only one side of the display panel (110) or on both sides. Alternatively, the gate driving circuit (120) may be directly embedded in the bezel area of ​​the display panel (110) and implemented in the form of a Gate In Panel (GIP).

[0034] The data driving circuit (130) receives digital image data (DATA) from the timing controller (140) and converts the image data into an analog data voltage. Then, by outputting the data voltage to each data line (DL) in accordance with the timing at which a scan signal is applied through the gate line (GL), each subpixel (SP) expresses brightness according to the data voltage.

[0035] The data driving circuit (130) may include one or more source driving integrated circuits (SDIC).

[0036] The timing controller (140) supplies various control signals to the gate driving circuit (120) and the data driving circuit (130), and controls the operation of the gate driving circuit (120) and the data driving circuit (130).

[0037] The timing controller (140) causes the gate driving circuit (120) to output a scan signal according to the timing implemented in each frame, and converts the image data received from the outside to match the data signal format used by the data driving circuit (130), and outputs the converted image data (DATA) to the data driving circuit (130).

[0038] The timing controller (140) receives various timing signals, including a vertical synchronization signal, a horizontal synchronization signal, an input data enable signal, a clock signal, etc., along with video data (DATA) from an external source (e.g., a host system).

[0039] The timing controller (140) can generate a data control signal (DCS) and a gate control signal (GCS) using various timing signals received from the outside, and output them to the data driving circuit (130) and the gate driving circuit (120), respectively.

[0040] For example, the timing controller (140) outputs various gate control signals (GCS), including a gate start pulse, a gate shift clock, and a gate output enable signal, to control the gate driving circuit (120).

[0041] Here, the gate start pulse controls the operation start timing of one or more gate driving integrated circuits constituting the gate driving circuit (120). The gate shift clock is a clock signal commonly input to one or more gate driving integrated circuits and controls the shift timing of the scan signal. The gate output enable signal specifies the timing information of one or more gate driving integrated circuits.

[0042] Additionally, the timing controller (140) outputs various data control signals (DCS), including a source start pulse, a source sampling clock, and a source output enable signal, to control the data driving circuit (130).

[0043] Here, the source start pulse controls the data sampling start timing of one or more source driving integrated circuits constituting the data driving circuit (130). The source sampling clock is a clock signal that controls the data sampling timing in each source driving integrated circuit. The source output enable signal controls the output timing of the data driving circuit (130).

[0044] The touch display device (100) may further include a power management integrated circuit that supplies various voltages or currents to a display panel (110), a gate driving circuit (120), a data driving circuit (130), and a touch driving circuit (150), or controls various voltages or currents to be supplied.

[0045] Meanwhile, if an encapsulation layer is formed on the upper part of the display panel (110) and a touch electrode is placed on the upper part, the capacitance capacity for driving the touch electrode may be increased. As a result, it is necessary to increase the level of the touch driving signal for driving the touch electrode, and to do this, a level shifter (not shown) may be added between the touch driving circuit (150) and the display panel (110) to control the level of the touch driving signal.

[0046] FIG. 2 is a drawing showing an example of an equivalent circuit diagram of a subpixel of a display device according to one embodiment of the present specification.

[0047] Referring to FIG. 2, in a touch display device (100) according to one embodiment of the present specification, a plurality of subpixels (SP) are arranged on a substrate (SUB) in a display area (AA) of a display panel (110).

[0048] 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), and a storage capacitor (Cst) for maintaining a constant voltage for one frame.

[0049] The first transistor (T1) may include a first node (N1) to which a data voltage (Vdata) can be applied through the second transistor (T2), a second node (N2) electrically connected to a 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. This first transistor (T1) is referred to as a driving transistor that drives the light-emitting element (ED).

[0050] The light-emitting element (ED) may include a first electrode (e.g., an anode electrode), a light-emitting layer, and a second electrode (e.g., a cathode electrode). The first electrode is electrically connected to the second node (N2) of the first transistor (T1), and a base voltage (VSS) may be applied to the second electrode.

[0051] In such a light-emitting device (ED), the light-emitting layer may be an organic light-emitting layer containing an organic material. In this case, the light-emitting device (ED) may be an organic light-emitting diode.

[0052] The second transistor (T2) is turned on and off by a scan signal (SCAN) applied through the gate line (GL) and can be electrically connected between the first node (N1) of the first transistor (T1) and the data line (DL). This second transistor (T2) can be described as a switching transistor.

[0053] When the second transistor (T2) is turned on by a scan signal (SCAN), the data voltage (Vdata) supplied through the data line (DL) is transmitted to the first node (N1) of the first transistor (T1).

[0054] The storage capacitor (Cst) can be electrically connected between the first node (N1) and the second node (N2) of the first transistor (T1).

[0055] Each subpixel (SP) may have a 2T1C structure including two transistors (T1, T2) and one capacitor (Cst), and in some cases, may include one or more additional transistors or one or more additional capacitors.

[0056] The storage capacitor (Cst) may not be a parasitic capacitor that exists between the first node (N1) and the second node (N2) of the first transistor (T1), but may be an external capacitor intentionally designed outside the first transistor (T1).

[0057] The first transistor (T1) and the second transistor (T2) may each be an n-type transistor or a p-type transistor.

[0058] In addition, the driving transistor (DRT) and the scan transistor (SCT) may each be composed of a low-temperature polycrystalline silicon transistor. However, they are not limited thereto, and at least one may be composed of an oxide thin-film transistor.

[0059] Meanwhile, circuit elements such as a light-emitting element (ED), two or more transistors (T1, T2), and one or more capacitors (Cst) are arranged in the display panel (110). Since these circuit elements are vulnerable to external moisture or oxygen, an encapsulation layer (ENCAP) may be arranged in the display panel (110) to prevent external moisture or oxygen from penetrating into the circuit elements.

[0060] In one embodiment of the present specification, a touch display device (100) may have a touch screen panel (TSP) formed on an encapsulation layer (ENCAP) and embedded in a display panel (110). That is, in the touch display device (100), a plurality of touch electrodes (TE) forming the touch screen panel (TSP) may be arranged on an encapsulation layer (ENCAP) to form a display panel (110).

[0061] FIG. 3 is a drawing for explaining a curved area of ​​a display device according to one embodiment of the present specification.

[0062] Referring to FIG. 3, the display device (300) may include a irregular display panel. That is, the display device (300) may include an irregular display panel in which at least a portion of the edges are curved, rather than a rectangular display panel that is commonly used in the past. For example, the outer edge (or boundary) of the display area (301) may appear curved, such as in the first area (310) of the display device (300). A non-display area (302) may be located at the outer edge of the display area (301).

[0063] In an embodiment, the display area of ​​the display device (300) may correspond to an elliptical or circular shape. In this case, at least a portion of the display area may appear curved.

[0064] The display area (301) includes an area where content is displayed. The display area (301) may include a plurality of pixels (or light-emitting elements) for displaying content. The pixels may have a rectangular shape, in which case some pixels (e.g., first pixel (330)) included in the display device (300) as illustrated may have their entire area included in the display area (301), and other pixels (e.g., second pixel (320)) may have their partial area included in the display area (301).

[0065] For example, the entire area of ​​the first pixel (330) may be placed in the display area (301). The second pixel (320) may have a first part (321) placed in the display area and a second part (322) placed in the non-display area (302).

[0066] Since the first pixel (330) is included in the display area (301), the first pixel (330) can emit light at 100%. That is, the first pixel (330) can emit light with the amount of light implemented according to the function of the first pixel (330).

[0067] The second pixel (320) may be a pixel placed at a position corresponding to the curve (311) of the display area (301). For example, the second pixel (320) may include a pixel placed on the curve (311).

[0068] In an embodiment, the amount of light emitted by the second pixel (320) can be controlled as a light-blocking member is disposed on the second pixel (320). For example, when a light-blocking member corresponding to a first area is disposed on the second pixel (320), the amount of light emitted by the second pixel (320) can be controlled according to the area of ​​the light-blocking member. More specifically, for example, when a light-blocking member corresponding to 20% of the area of ​​the second pixel (320) is disposed on the second pixel (320), the second pixel (320) can emit light in a state corresponding to the area not covered by the light-blocking member, that is, in a state of 80%. The second pixel (320) can emit light equivalent to 80% of the amount of light emitted according to the function of the first pixel (330).

[0069] In an embodiment, the light-blocking member may correspond to the location of the second pixel (320). For example, the area and placement of the light-blocking member may be predetermined according to the location of the second pixel (320). For example, if the location of the second pixel (320) is such that the second pixel (320) is included in approximately 50% of the non-display area, the light-blocking member may be placed to overlap the second pixel (320) (or a sub-pixel included in the second pixel (320)). Additionally, the size of the light-blocking member may have an area that covers 50% of the light-emitting area of ​​the second pixel (320) corresponding to the ratio of the non-display area.

[0070] In the embodiment, the ratio (or ratio) of the area of ​​the light-blocking member to the area of ​​the light-emitting region (or light-emitting layer) of the pixel (or sub-pixel) where the light-blocking member is placed may correspond to the ratio of the second part (322) to the area of ​​the second pixel (320). Here, the light-emitting region may correspond to the light-emitting layer (EL) described later through FIG. 5, but is not limited thereto and may correspond to the entire light-emitting region including the cathode (CTD), anode (AND), and light-emitting layer (EL) according to the embodiment.

[0071] In an embodiment, the area of ​​the portion included in the display area (301) (e.g., the first portion (321)) and the area of ​​the portion included in the non-display area (302) (e.g., the second portion (322)) of the pixel placed on the curve (311) may be changed according to the position on the curve (311). For example, the area of ​​the first portion (321) and the second portion (322) of the second pixel (320) may be predetermined according to the position on the curve (311), and accordingly, the area of ​​the light-blocking member may also be predetermined.

[0072] For example, the third pixel (323) and the fourth pixel (324), which are other pixels placed on the curve (311), are located at different positions from the second pixel (320), so the area of ​​the light-blocking member placed thereon may also be different. However, this is not limited thereto, and the two pixels placed at different positions on the curve (311) may have the same area of ​​the light-blocking member depending on the area included in the display area (301) and / or non-display area (302).

[0073] More specific examples of the first pixel (330), second pixel (320), third pixel (323) and fourth pixel (324) will be described later through FIG. 4.

[0074] In the embodiment, a dummy pixel (340) may be placed in the non-display area (302). The dummy pixel (340) may be a non-emitting pixel. The entire area of ​​the dummy pixel (340) may be included in the non-display area.

[0075] In some cases, the placement of dummy pixels (340) in the non-display area (302) may be omitted. In such cases, components necessary for driving the display device (300), such as wiring connected to the pixels, may be placed in the non-display area (302).

[0076] Meanwhile, although the present embodiment describes the light-blocking member being placed on a pixel, if the pixel is implemented to include a plurality of subpixels, the light-blocking member may be placed on each of the plurality of subpixels. In addition, the area of ​​the light-blocking member may be determined based on the ratio to the area of ​​the plurality of subpixels. That is, if the pixel is included in the non-display area by about 30%, the light-blocking member may be provided in a form that covers each of the plurality of subpixels by 30%.

[0077] FIG. 4 is a drawing for explaining the pixels of a display device according to one embodiment of the present specification. Specifically, FIG. 4 specifically shows the first pixel (330) to the fourth pixel (324) of FIG. 3.

[0078] Referring to FIG. 4, the first pixel (330) has its entire area included in the display area, so the placement of the light-blocking member may be omitted. Specifically, the first pixel (330) may include a first subpixel (401), a second subpixel (402), and a third subpixel (403).

[0079] The first subpixel (401) may emit red light, the second subpixel (402) may emit green light, and the third subpixel (403) may emit blue light. The light-emitting area of ​​each subpixel may correspond to the shape of the first subpixel (401), the second subpixel (402), and the third subpixel (403) respectively shown in FIG. 4. In this case, a light-blocking member may not be placed on the light-emitting areas of the first subpixel (401), the second subpixel (402), and the third subpixel (403) constituting the first pixel (330).

[0080] In some cases, a pixel emitting white light may be added within the pixel (e.g., the first pixel (330), the second pixel (320)), or at least one subpixel may be omitted, or at least one subpixel may emit a different color.

[0081] In the embodiment, the second pixel (320) may have 80% of the area corresponding to the second pixel (320) included in the display area and 20% included in the non-display area. In this case, a light-blocking member corresponding to 20% of the light-emitting area area may be disposed on the light-emitting area of ​​the second pixel (320).

[0082] Specifically, the second pixel (320) may include a plurality of subpixels constituting the second pixel (320). For example, the plurality of subpixels constituting the second pixel (320) may include a first subpixel (405), a second subpixel (407), and a third subpixel (404). Here, the first subpixel (405) may emit red light, the second subpixel (407) may emit green light, and the third subpixel (404) may emit blue light, but is not limited thereto.

[0083] The light-emitting area of ​​each subpixel may correspond to the shape of each illustrated subpixel. A light-blocking member may be placed on the light-emitting area of ​​the subpixel. For example, as illustrated, a light-blocking member (410) may be placed on the light-emitting area of ​​the third subpixel (404). The area of ​​the light-blocking member (410) may correspond to the area of ​​the second subpixel (320) included in the non-display area. For example, if the area of ​​the second subpixel (320) included in the non-display area corresponds to 20% of the total area of ​​the second subpixel (320), the area of ​​the light-blocking member (410) placed on the third subpixel (404) may correspond to 20% of the area of ​​the light-emitting area of ​​the third subpixel (404).

[0084] In an embodiment, the light-blocking member (410) may be implemented as a rectangle as illustrated, but is not limited thereto. For example, the light-blocking member (410) may be implemented to have a shape corresponding to the shape of a subpixel (or the light-emitting region of a subpixel). As another example, the light-blocking member (410) may be implemented to have the shape of the outer edge (or boundary line) of a subpixel. A more specific example related thereto may be referenced to FIG. 7.

[0085] In an embodiment, the third pixel (323) and the fourth pixel (324) may be pixels placed at a different location from the second pixel (320) on the curve of the display area. In this case, as shown in FIG. 3, the area included in the non-display area of ​​each of the third pixel (323) and the fourth pixel (324) may differ from the area included in the non-display area of ​​the second pixel (320). Specifically, for example, in the case of the second pixel (320), 20% of the total area may be included in the non-display area. In the case of the third pixel (323), 80% of the total area may be included in the non-display area. In the case of the fourth pixel (324), 35% of the total area may be included in the non-display area.

[0086] In this case, a light-blocking member (e.g., a light-blocking member (410)) corresponding to 20% of the area of ​​each subpixel may be placed on each subpixel of the second pixel (320). A light-blocking member corresponding to 80% of the area of ​​each subpixel may be placed on each subpixel of the third pixel (323). A light-blocking member corresponding to 35% of the area of ​​each subpixel may be placed on each subpixel of the fourth pixel (324). The light-blocking members placed on the second pixel (320), the third pixel (323), and the fourth pixel (324) may be placed relative to the center of each subpixel as illustrated, but are not limited thereto.

[0087] In an embodiment, touch wiring may be arranged around each subpixel. For example, a first touch wiring (421) may be arranged on one side of the third subpixel (404) of the second pixel (320), and a second touch wiring (422) may be arranged on the other side of the third subpixel (404).

[0088] In an embodiment, the first touch wiring (421) may correspond to a touch sensor electrode (or touch sensor line). The second touch wiring (422) may correspond to a touch bridge electrode (or touch bridge line). Here, the touch sensor electrode may include an electrode located on a first plane that transmits and receives a touch signal. The touch bridge electrode may include an electrode located on a second plane below the first plane that is electrically connected to the touch sensor electrode through a contact hole. The touch sensor electrode and the touch bridge electrode may be placed on a plane above the light-emitting area.

[0089] In an embodiment, the first touch wiring (421) and the second touch wiring (422) can each be connected to a touch sensor to implement a touch function.

[0090] In an embodiment, the second touch wiring (422) may be wiring disposed on a different plane from the first touch wiring (421). For example, the first touch wiring (421) may be disposed on a first plane above the plane where the light-emitting area is disposed, and the second touch wiring (422) may be disposed on a second plane between the first plane and the plane where the light-emitting area is disposed.

[0091] In an embodiment, at least one of the first touch wiring (421) and the second touch wiring (422) may correspond to at least one of the various wirings used for sensing touch input. The various wirings used for sensing touch input may include, for example, a Tx wiring that transmits a signal for sensing a touch signal, a Tx routing wiring connected to the Tx wiring, and at least one of an Rx wiring that receives a signal sensed by a touch sensor, and an Rx routing wiring connected to the Rx wiring. The function corresponding to the first touch wiring (421) and the second touch wiring (422) may be implemented to correspond to one of the wirings related to sensing touch input described above, depending on the design.

[0092] The first touch wiring (421) and the second touch wiring (422) are placed on the second pixel (320) and may be placed on a plane higher than a subpixel (e.g., a third subpixel (404)) included in the second pixel (320). A light-blocking member (e.g., a light-blocking member (410)) placed on the subpixel may be placed on the plane where the first touch wiring (421) or the second touch wiring (422) is placed.

[0093] In an embodiment, the light-shielding member may be implemented to include a material that constitutes the first touch wiring (421) or the second touch wiring (422). For example, if the first touch wiring (421) is implemented to include aluminum (Al) and / or titanium (Ti), the light-shielding member may also be implemented to include aluminum (Al) and / or titanium (Ti) that constitutes the first touch wiring (421). However, this is not limited thereto, and for example, the first touch wiring (421) and / or the light-shielding member may be implemented to include at least one of copper (Cu) and molybdenum (Mo).

[0094] In an embodiment, the first touch wiring (421) and the second touch wiring (422) may be implemented in a form disposed on an encapsulation layer, and a more specific example related thereto may be referenced to FIG. 5 or FIG. 6. Additionally, a specific description related to the structure of the first touch wiring (421) and the second touch wiring (422) may be referenced to FIG. 10 to FIG. 12.

[0095] FIGS. 5 and 6 are drawings for illustrating cross-sections of a display device according to an embodiment of the present specification. Specifically, FIG. 5 shows a cross-section AA' of a subpixel in which the placement of the light-blocking member of FIG. 4 is omitted, and FIG. 6 shows a cross-section BB' of a subpixel in which the light-blocking member of FIG. 4 is placed.

[0096] Referring to FIG. 5, in a display area of ​​a display device (or display panel) according to one embodiment of the present invention, a substrate (PI1, PI2), a buffer layer (M / B, A / B), a metal layer (BSM), a transistor (gate (GAT), active (ACT), source and drain (SDL)), a capacitor (CST), a gate insulating layer (GI), an insulating layer (ILD1, ILD2), an interlayer insulating layer (113), a passivation layer (PAS), a planarization layer (PLN), a light-emitting element (anode (AND), light-emitting layer (EL), cathode (CTD)), a protection layer (ALD), a bank and spacer (B&S), an encapsulation layer (Encap1, PCL, Encap2), a touch buffer (BUF), a touch insulating layer (ILD), a first touch wiring (510), a second touch wiring (520), and a photoacrylic (PAC) may be disposed.

[0097] A buffer layer (M / B, A / B) may be disposed on the substrate (PI1, PI2). The buffer layer (M / B, A / B) can improve the adhesion between the layers formed on the buffer layer (M / B, A / B) and the substrate (PI1, PI2), and can perform the role of blocking alkaline components, etc., from leaking out from the substrate (PI1, PI2). In addition, the buffer layer (M / B, A / B) is not an essential component and may be omitted based on the type and material of the substrate (PI1, PI2), the structure and type of the transistor, etc.

[0098] The transistor may be placed on the buffer layer (M / B, A / B). The transistor may include an active (ACT), a gate (GAT), and a source and drain (SDL). The source and drain (SDL) may refer to the source electrode and the drain electrode. Depending on the design of the pixel circuit, the design of the source and drain may be changed. For example, the source region and the drain region may be swapped.

[0099] The active (ACT) may include a channel region where a channel is formed when the transistor is driven, and source and drain regions on both sides of the channel region. The source region refers to the part of the active (ACT) connected to the source electrode, and the drain region refers to the part of the active (ACT) connected to the drain electrode.

[0100] The active (ACT) can be composed of various metal oxides, such as IGZO (indium-gallium-zinc-oxide), for example. Although the description assumed that the transistor's active (ACT) is composed of IGZO among various metal oxides and is formed based on an IGZO layer, it is not limited to this and may be formed from other metal oxides such as IZO (indium-zinc-oxide), IGTO (indium-gallium-tin-oxide), or IGO (indium-gallium-oxide). The active (ACT) can be formed by depositing a metal oxide on a buffer layer (M / B, A / B), performing a heat treatment process for stabilization, and then patterning the metal oxide.

[0101] A gate insulating layer (GI) may be disposed on the active (ACT). The gate insulating layer (GI) may be composed of a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or a multilayer thereof. Contact holes may be formed in the gate insulating layer (GI) for connecting the source electrode and drain electrode of the transistor, respectively, to the source region and drain region of the transistor's active (ACT), respectively.

[0102] A gate electrode (GAT) of a transistor may be disposed on a gate insulating layer (GI). The gate electrode (GAT) may be formed as a single layer or a multilayer composed 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. The gate electrode (GAT) may be formed on the gate insulating layer (GI) so as to overlap with the channel region of the active (ACT) of the transistor.

[0103] Insulating layers (ILD1, ILD2) may be disposed on the gate insulating layer (GI) and the gate electrode (GAT). The insulating layers (ILD1, ILD2) may be composed of a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or a multilayer thereof. Contact holes may be formed in the insulating layers (ILD1, ILD2) to expose the source and drain regions of the active (ACT) of the transistor.

[0104] The source and drain (SDL) of the transistor may be disposed on the insulating layers (ILD1, ILD2). In FIG. 5, the source electrode and the drain electrode are collectively referred to as the source and drain (SDL), but this is not limited thereto, and the source and drain (SDL) may be partially referred to as the source electrode and partially referred to as the drain electrode. The source electrode and the drain electrode of the transistor may be connected to the active (ACT) of the transistor through contact holes formed in the gate insulating layer (GI) and the insulating layers (ILD1, ILD2). Accordingly, the source electrode of the transistor may be connected to the source region of the active (ACT) through contact holes formed in the gate insulating layer (GI) and the insulating layers (ILD1, ILD2). Additionally, the drain electrode of the transistor may be connected to the drain region of the active (ACT) through contact holes formed in the gate insulating layer (GI) and the insulating layers (ILD1, ILD2).

[0105] A passivation layer (114) may be disposed on the source electrode and drain electrode of a transistor (TR). That is, the passivation layer (114) may be disposed to cover a plurality of transistors (TR). The passivation layer (114) may be composed of a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or a multilayer thereof. A contact hole may be formed in the passivation layer (114) to expose the drain electrode (DE) of the transistor (TR).

[0106] A planarization layer (PLN) may be disposed on a passivation layer (PAS). Contact holes for exposing a drain electrode may be formed in the passivation layer (PAS) and the planarization layer (PLN). The planarization layer (PLN) may be an organic material layer for planarizing and protecting the top of the transistor. For example, the planarization layer (PLN) may be formed from organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0107] Although not shown, additional signal wiring may be placed in the flattening layer (PLN).

[0108] A light-emitting element may be disposed on the planarization layer (PLN). The light-emitting element may include an anode (AND), a cathode (CTD), and a light-emitting layer (EL).

[0109] The anode (AND) can be placed on the planarization layer (PLN). The anode (AND) can be electrically connected to the source and drain (SDL) through contact holes formed in the planarization layer (PLN). Thus, the anode (AND) can be electrically connected to the transistor.

[0110] Since the display device according to FIG. 5 is a top-emission display device, the electrode connected to the transistor through the contact hole can correspond to an anode (AND). However, in some cases, the display device may be implemented as a bottom-emission device, in which case the anode (AND) of FIG. 5 may be replaced with a cathode (CTD), and the cathode (CTD) may be replaced with an anode (AND).

[0111] Banks and spacers (B&S) may be disposed on the planarization layer (PLN) and the anode (AND). An opening may be formed in the bank to expose the anode (AND). Since the bank can define a light-emitting area of ​​the display device, it may also be referred to as a pixel defining film. Although the bank and the spacer are not distinguished in FIG. 5, in some cases, the spacer may be disposed on the bank after the bank is formed.

[0112] A light-emitting layer (DL) may be disposed on the anode (AND). The light-emitting layer (EL) may be formed by stacking a hole layer, a light-emitting layer, and an electron layer in that order or in reverse order on the anode (AND). Additionally, the light-emitting layer (EL) may be provided with first and second light-emitting structures facing each other with a charge generation layer in between. In this case, one of the first and second light-emitting structures may generate blue light, and the other of the first and second light-emitting structures may generate yellow-green light, thereby generating white light through the first and second light-emitting structures. As color light corresponding to each subpixel is generated in the light-emitting layer (EL), the display device can realize a color image. That is, the light-emitting layer (EL) of the red subpixel may generate red light, the light-emitting layer (EL) of the green subpixel may generate green light, and the light-emitting layer (EL) of the blue subpixel may generate blue light.

[0113] In some cases, white light generated in the light-emitting layer is incident on a color filter (not shown) located above the light-emitting layer to create a color image.

[0114] A cathode (CTD) may be disposed on the light-emitting layer (EL). The cathode (CTD) may be disposed on the light-emitting layer (EL) so as to face the anode (AND) with the light-emitting layer (EL) in between.

[0115] The protective layer (ALD) is an Atomic Layer Deposition and can prevent damage to the light-emitting element caused by outgas emitted by PCL during the process. The lifespan of the display panel (or display device) can be improved by this protective layer (ALD).

[0116] An encapsulation layer may be disposed on the light-emitting element. The encapsulation layer can suppress moisture penetration into the cathode (CTD). The encapsulation layer may include a first inorganic encapsulation layer (Encap1), an organic encapsulation layer (PCL), and a second inorganic encapsulation layer (Encap2). The first inorganic encapsulation layer (Encap1) of the encapsulation layer may be disposed on the cathode (CTD). Additionally, the organic encapsulation layer (PCL) may be disposed on the first inorganic encapsulation layer (Encap1). Furthermore, the second inorganic encapsulation layer (Encap2) may be disposed on the organic encapsulation layer (PCL). The first inorganic encapsulation layer (Encap1) and the second inorganic encapsulation layer (Encap2) of the encapsulation layer may be formed from inorganic materials such as silicon nitride (SiNx) or silicon oxide (SiOx). The organic encapsulation layer (PCL) of the encapsulation layer can be formed from organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0117] A touch buffer (BUF), a touch insulating layer (ILD), and touch wiring (510, 520) may be disposed on the second inorganic encapsulation layer (Encap2) of the encapsulation layer. The touch insulating layer (ILD) may be formed from an inorganic material such as silicon nitride (SiNx) or silicon oxide (SiOx). The first touch wiring (510) may be disposed on the touch insulating layer (ILD), and the second touch wiring (520) may be disposed on the touch buffer (BUF). Photoacrylic (PAC) may be disposed on the touch wiring (510, 520) and the touch insulating layer (ILD).

[0118] In the case of FIG. 5, since the placement of the light-blocking member is omitted for the pixel, a separate light-blocking member may not be placed. For an example where the light-blocking member is placed, refer to FIG. 6 described later. In the following description related to FIG. 6, content that overlaps with FIG. 5 will be omitted.

[0119] Referring to FIG. 6, a light-shielding member (630) may be placed on a plane where the first touch wiring (610) (which performs the same function as the first touch wiring (510) of FIG. 5) is placed. That is, the light-shielding member (630) may be placed on the same plane as the first touch wiring (610). For example, the light-shielding member (630) may be placed on a touch insulating layer (ILD).

[0120] In an embodiment, the light-shielding member (630) may be composed of the same material as the first touch wiring (610). In an embodiment, the light-shielding member (630) may be composed of the same material as the second touch wiring (620) (which performs the same function as the second touch wiring (520) of FIG. 5).

[0121] In an embodiment, the light-shielding member (630) may be placed on the same plane as the second touch wiring (620). That is, the light-shielding member (630) may be placed on the touch buffer (BUF). In this case, the light-shielding member (630) may be made of the same material as the second touch wiring (620), but is not limited thereto.

[0122] The area of ​​the light-blocking member (630) can be determined according to the ratio of the area included in the non-display area among the area of ​​the pixel where the light-blocking member (630) is placed. For example, if 30% of the pixel where the light-blocking member (630) is placed is included in the non-display area, the light-blocking member (630) may have an area corresponding to 20% of the light-emitting area. Such a light-blocking member (630) can be placed on the light-emitting area to block 20% of the light generated by the light-emitting element.

[0123] Here, the light-emitting region may include an area where banks and spacers are not placed, that is, an area where banks and spacers are open. In some cases, the light-emitting region may correspond to an area where an EL layer is placed.

[0124] In an embodiment, the thickness of the light-blocking member (630) may correspond to the thickness of the first touch wiring (610) or the second touch wiring (620). For example, the thickness of the light-blocking member (630) may be the same as the thickness of the first touch wiring (610). However, it is not limited thereto, and the light-blocking member (630) may be formed with a thickness different from that of the first touch wiring (610) or the second touch wiring (620).

[0125] In an embodiment, the cross-section of the light-blocking member (630) may correspond to the cross-section of the first touch wiring (610) or the second touch wiring (620). For example, the cross-section of the light-blocking member (630) may have the same shape as the cross-section of the first touch wiring (610). However, it is not limited thereto, and the cross-section of the light-blocking member (630) may be formed differently from the cross-section of the first touch wiring (610) or the second touch wiring (620).

[0126] FIG. 7 is a drawing for explaining a pixel of a display device according to another embodiment of the present specification.

[0127] Reference numeral 710 of FIG. 7 indicates a case where the light-blocking member (701) has a shape corresponding to the shape of the subpixel (703). According to reference numeral 710, the light-blocking member (701) is positioned with respect to the center of the subpixel (703), and the shape of the light-blocking member (701) may correspond to the shape of the subpixel (703). For a cross-sectional view CC' when the embodiment is implemented as in reference numeral 710, refer to FIG. 8.

[0128] Light generated by the subpixel (703) can be transmitted to the area of ​​the subpixel (703) where the light-blocking member (705) is not placed, i.e., the light-transmitting area (705). Light can be blocked in the area where the light-blocking member (705) is placed. Accordingly, light generated by the subpixel (703) can emit light in proportion to the ratio of the area of ​​the light-transmitting area (705) to the area of ​​the subpixel (703).

[0129] Reference numeral 720 indicates a case where the light-blocking member (711) has a shape corresponding to the boundary line of the subpixel (713). According to reference numeral 720, the light-blocking member (711) may be positioned along the boundary line (or edge) of the subpixel (713). In this case, the light-blocking member (711) may be positioned at the boundary of the subpixel (713), and the light-transmitting area (715) may be positioned at the center of the subpixel (713). For a cross-sectional view DD' when the embodiment is implemented as in reference numeral 720, refer to FIG. 9.

[0130] Light generated by the subpixel (703) can be transmitted to the area of ​​the subpixel (713) where the light-blocking member (711) is not placed, i.e., the light-transmitting area (715). Light can be blocked in the area where the light-blocking member (711) is placed. Accordingly, light generated from the subpixel (713) can emit light in proportion to the ratio of the area of ​​the light-transmitting area (715) to the area of ​​the subpixel (713).

[0131] FIGS. 8 and 9 are drawings for illustrating a cross-section of a display device according to another embodiment of the present specification. In the following description related to FIGS. 8 and 9, content that overlaps with FIGS. 5 and 6 may be omitted.

[0132] FIG. 8 shows a cross-section CC' of a subpixel in which a light-blocking member according to reference numeral 710 of FIG. 7 is disposed. According to FIG. 8, a light-blocking member (810) may be disposed on the same plane as the first touch wiring (801). The light-blocking member (810) may be disposed on a light-emitting element including a cathode (CTD), an anode (AND), and a light-emitting layer (EL) to block at least a portion of the light from the light-emitting element.

[0133] The light blocked by the light-blocking member (810) may be related to the ratio of the area of ​​the light-blocking member to the area of ​​the light-emitting element. For example, if the area of ​​the light-blocking member (810) to the area of ​​the light-emitting element is 80%, the light blocked by the light-blocking member (810) may correspond to 80% of the amount of light emitted from the light-emitting element.

[0134] FIG. 8 illustrates, by way of example, that the light-shielding member (810) is placed on the same plane as the first touch wiring (801), but is not limited thereto. According to an embodiment, the light-shielding member (810) may be placed on the same plane as the second touch wiring (802). In this case, the light-shielding member (810) may be composed of the same material as the second touch wiring (802).

[0135] Since the plane of the light-blocking member (810) in FIG. 8 corresponds to the shape of a subpixel, it may have a rhombus shape as shown in FIG. 7. FIG. 8 shows a cross-section crossing the center of the rhombus, so the cross-section of the light-blocking member (810) may appear wider than the cross-section at other locations. If the CC' cross-section moves up or down with respect to the y-axis, the width of the cross-section of the light-blocking member (810) may be reduced.

[0136] FIG. 9 shows a cross-section DD' of a subpixel in which a light-blocking member according to reference numeral 720 of FIG. 7 is disposed. According to FIG. 9, a light-blocking member (810) may be disposed on the same plane as the first touch wiring (901). The light-blocking member (910) may be disposed on a light-emitting element including a cathode (CTD), an anode (AND), and a light-emitting layer (EL) to block at least a portion of the light from the light-emitting element.

[0137] The light-blocking member (910) of FIG. 9 can be formed along the boundary line of the subpixel on the subpixel. Accordingly, in cross-section DD', the light-blocking member (910) is not placed in the central part of the subpixel, but can be placed in the edge part of the subpixel.

[0138] In an embodiment, FIGS. 5, FIGS. 6, FIGS. 8, and FIGS. 9 may be cross-sectional views of one of a plurality of subpixels constituting a single pixel. Accordingly, in each subpixel according to an embodiment, a light-blocking member may be disposed in a form corresponding to at least one of FIGS. 5, FIGS. 6, FIGS. 8, and FIGS. 9. For example, if a pixel includes a first subpixel and a second subpixel, a light-blocking member according to FIGS. 5 may be disposed in the first subpixel, and a light-blocking member according to FIGS. 6 may be disposed in the second subpixel.

[0139] FIGS. 10 to 13 are drawings for explaining a structure for implementing a touch function of a display device according to an embodiment of the present specification.

[0140] FIG. 10 is a simplified diagram showing a touch electrode structure for mutual capacitance-based touch sensing in a display device according to one embodiment of the present specification.

[0141] Referring to FIG. 10, in a display device according to one embodiment of the present specification (e.g., the display device (100) of FIG. 1), a touch electrode structure for mutual capacitance-based touch sensing may include a plurality of X-touch electrode lines (X-TEL) (or X-touch wiring) and a plurality of Y-touch electrode lines (Y-TEL) (or Y-touch wiring). Here, the plurality of X-touch electrode lines (X-TEL) and the plurality of Y-touch electrode lines (Y-TEL) are located on top of an encapsulation layer (ENCAP).

[0142] Each of the plurality of X-touch electrode lines (X-TEL) is arranged in a first direction, and each of the plurality of Y-touch electrode lines (Y-TEL) can be arranged in a second direction different from the first direction.

[0143] In this specification, the first direction and the second direction may be relatively different directions; for example, the first direction may be the x-axis direction and the second direction may be the y-axis direction. Conversely, the first direction may be the y-axis direction and the second direction may be the x-axis direction. Additionally, the first direction and the second direction may be orthogonal to each other, but may not be orthogonal. Also, in this specification, rows and columns are relative, and rows and columns may change depending on the viewing angle.

[0144] Each of the plurality of X-touch electrode lines (X-TEL) may be composed of multiple electrically connected X-touch electrodes. Each of the plurality of Y-touch electrode lines (Y-TEL) may be composed of multiple electrically connected Y-touch electrodes.

[0145] Here, multiple X-touch electrodes and multiple Y-touch electrodes are included in multiple touch electrodes (TE) and are electrodes with distinct roles (functions).

[0146] For example, the plurality of X-touch electrodes constituting each of the plurality of X-touch electrode lines (X-TEL) may be touch driving electrodes, and the plurality of Y-touch electrodes constituting each of the plurality of Y-touch electrode lines (Y-TEL) may be touch sensing electrodes. In this case, each of the plurality of X-touch electrode lines (X-TEL) corresponds to a touch driving electrode line, and each of the plurality of Y-touch electrode lines (Y-TEL) corresponds to a touch sensing electrode line.

[0147] Conversely, a plurality of X-touch electrodes constituting each of a plurality of X-touch electrode lines (X-TEL) may be touch sensing electrodes, and a plurality of Y-touch electrodes constituting each of a plurality of Y-touch electrode lines (Y-TEL) may be touch driving electrodes. In this case, each of the plurality of X-touch electrode lines (X-TEL) corresponds to a touch sensing electrode line, and each of the plurality of Y-touch electrode lines (Y-TEL) corresponds to a touch driving electrode line.

[0148] A touch sensor metal for touch sensing may include a plurality of touch lines (TL) in addition to a plurality of X-touch electrode lines (X-TEL) and a plurality of Y-touch electrode lines (Y-TEL).

[0149] A plurality of touch lines (TL) may include one or more X-touch lines (X-TL) connected to each of a plurality of X-touch electrode lines (X-TEL), and one or more Y-touch lines (Y-TL) connected to each of a plurality of Y-touch electrode lines (Y-TEL).

[0150] FIG. 11 is a diagram illustrating an example of a display panel having a multi-feeding structure that simultaneously applies touch signals to a plurality of touch electrodes located on the same line in a display device according to one embodiment of the present specification.

[0151] Referring to FIG. 11, a display device according to one embodiment of the present specification (or the display device (100) of FIG. 1) may configure the touch line in a multi-feeding structure so that a touch signal can be simultaneously applied to a plurality of touch electrodes constituting the same touch electrode line (TEL) in order to reduce the time delay of the touch signal.

[0152] At this time, when a plurality of X-touch electrodes arranged in the X-axis direction form a single X-touch electrode line (X-TEL), the plurality of X-touch electrodes forming the single X-touch electrode line (X-TEL) are connected to an X-touch electrode connection line (X-CL) so that touch signals are applied simultaneously to the plurality of X-touch electrodes, and the plurality of X-touch electrodes located on the same line can be connected to the same X-touch line (X-TL).

[0153] Alternatively, if a plurality of Y-touch electrodes arranged in the Y-axis direction form a single Y-touch electrode line (Y-TEL), a plurality of Y-touch electrodes located in the same line can be connected to the same Y-touch line (Y-TL) so that touch signals are simultaneously applied to the plurality of Y-touch electrodes forming the single Y-touch electrode line (Y-TEL).

[0154] Here, an example is illustrated in which the X-touch electrode line (X-TEL) in the X-axis direction is composed of multiple X-touch electrodes, and the Y-touch electrode line (Y-TEL) in the Y-axis direction is composed of a single Y-touch electrode. Accordingly, multiple X-touch electrodes arranged in the same row in the X-axis direction can be connected to the same X-touch line (X-TL).

[0155] For example, the X-touch electrode line (X-TEL1) of the first row is composed of a plurality of X-touch electrodes placed in the first row, and the plurality of X-touch electrodes located in the first row are each electrically connected to the branched first X-touch line (X-TL1) so that the first touch signal can be transmitted simultaneously.

[0156] Accordingly, by simultaneously applying touch signals to a plurality of X-touch electrodes arranged in the X-axis direction, the delay of the touch signals for the plurality of X-touch electrodes is reduced, so that the touch performance can be uniform across the entire screen of the display panel.

[0157] For example, when a plurality of X-touch electrodes arranged in the X-axis direction are touch driving electrodes, the plurality of X-touch electrodes constituting one X-touch electrode line (X-TEL) are electrically connected by the same X-touch line (X-TL), and the same touch driving signal can be applied at the same timing.

[0158] A plurality of X-touch electrode lines (X-TEL1, , X-TELn) can each be electrically connected to a corresponding X-touch pad (X-TP) through an X-touch line (X-TL1, , X-TLn). For example, a plurality of X-touch electrodes included in the first X-touch electrode line (X-TEL1) can be electrically connected to a corresponding X-touch pad (X-TP) through the first X-touch line (X-TL1).

[0159] On the other hand, since each Y-touch electrode line (Y-TEL1, , Y-TELm) consists of a single Y-touch electrode, each Y-touch electrode line (Y-TEL1, , Y-TELm) can be electrically connected to the corresponding Y-touch pad (Y-TP) through a single Y-touch line (Y-TL).

[0160] At this time, in order to connect a single touch line to multiple touch electrodes constituting the same touch electrode line (TEL), the structure for branching a single touch line can be changed in various ways.

[0161] Meanwhile, X-touch lines (X-TL) connected to X-touch electrodes (X-TE) located in each column may be arranged alternately in multiple units.

[0162] A display device according to one embodiment of the present specification can reduce the number of touch lines (TL) and secure the area of ​​the touch electrode (TE) by arranging X-touch lines (X-TL) or Y-touch lines (Y-TL) alternately.

[0163] Here, we will explain a mutual capacitance-based touch sensing structure in which touch electrodes (TE11-TE44) are arranged in a 4x4 matrix as an example.

[0164] In the case of a mutual capacitance-based touch sensing structure, the X-touch electrode line (X-TEL) and the Y-touch electrode line (Y-TEL) can be arranged to intersect each other.

[0165] For example, the first X-touch electrode line (X-TEL1) may consist of a row 1 column 1 X-touch electrode (X-TE11), a row 2 column X-touch electrode (X-TE12), a row 3 column X-touch electrode (X-TE13), and a row 4 column X-touch electrode (X-TE14).

[0166] At this time, the X-touch electrodes (X-TE11, X-TE12, X-TE13, X-TE14) located in the first row can be connected in the x-axis direction by the first X-touch electrode connection line (X-CL1). Accordingly, a touch signal transmitted through some of the X-touch electrodes (X-TE11, X-TE12, X-TE13, X-TE14) located in the first row can be transmitted to all of the X-touch electrodes (X-TE11, X-TE12, X-TE13, X-TE14) located in the first row by the first X-touch electrode connection line (X-CL1).

[0167] Additionally, X-touch electrodes (X-TE21, X-TE22, X-TE23, X-TE24) located in the second row can be connected in the x-axis direction by the second X-touch electrode connection line (X-CL2). Therefore, a touch signal transmitted through some of the X-touch electrodes (X-TE21, X-TE22, X-TE23, X-TE24) located in the second row can be transmitted to all of the X-touch electrodes (X-TE21, X-TE22, X-TE23, X-TE24) located in the second row by the second X-touch electrode connection line (X-CL2).

[0168] In this state, X-touch lines (X-TL1, X-TL2, X-TL3, X-TL4) extending in the y-axis direction can be arranged alternately and connected to X-touch electrodes (X-TE11 ~ X-TE44).

[0169] For example, among the X-touch electrodes (X-TE11, X-TE21, X-TE31, X-TE41) located in the first row, the X-touch electrode (X-TE11) in the first row and first column is connected to the first X-touch line (X-TL1), and the X-touch electrode (X-TE31) in the third row and first column is connected to the third X-touch line (X-TL3).

[0170] On the other hand, the X-touch electrode (X-TE21) in row 2, column 1 and the X-touch electrode (X-TE41) in row 4, column 1 are not connected to the X-touch line (X-TL).

[0171] However, since the X-touch electrodes (X-TE11, X-TE12, X-TE13, X-TE14) of the first row are connected in the x-axis direction by the X-touch electrode connection line (X-CL1) of the first row, the touch signal transmitted through the first X-touch line (X-TL1) can be transmitted to all of the X-touch electrodes (X-TE11, X-TE12, X-TE13, X-TE14) of the first row.

[0172] Likewise, since the X-touch electrodes of the third row (X-TE31, X-TE32, X-TE33, X-TE34) are connected in the x-axis direction by the X-touch electrode connection line (X-CL3) of the third row, the touch signal transmitted through the third X-touch line (X-TL3) can be transmitted to all of the X-touch electrodes of the third row (X-TE31, X-TE32, X-TE33, X-TE34).

[0173] Thus, since only two X-touch lines (X-TL1, X-TL3) are placed in the area where four X-touch electrodes (X-TE11, X-TE21, X-TE31, X-TE41) located in the first row are placed to transmit touch signals, the number of touch lines (TL) can be reduced.

[0174] At this time, among the X-touch electrodes (X-TE12, X-TE22, X-TE32, X-TE42) located in the second row, the X-touch electrode (X-TE22) in the second row and second column is connected to the second X-touch line (X-TL2), and the X-touch electrode (X-TE42) in the fourth row and second column is connected to the fourth X-touch line (X-TL4). On the other hand, the X-touch electrode (X-TE12) in the first row and second column and the X-touch electrode (X-TE32) in the third row and second column are not connected to the X-touch line (X-TL).

[0175] Thus, the connection points of the X-touch lines (X-TL1, X-TL3) connected to the X-touch electrodes in the first row corresponding to the left area based on the first Y-touch electrode line (Y-TEL1) can be arranged so as to be offset from the connection points of the X-touch lines (X-TL2, X-TL4) connected to the X-touch electrodes in the second row corresponding to the right area.

[0176] As a result, since only two X-touch lines (X-TL2, X-TL4) are placed in the area where four X-touch electrodes (X-TE12, X-TE22, X-TE32, X-TE42) located in two rows are placed to transmit touch signals, the number of touch lines (TL) can be reduced.

[0177] Meanwhile, for the X-touch electrodes (X-TE13, X-TE23, X-TE33, X-TE43) located in the 3rd column, the X-touch line (X-TL) can be connected in the same structure as the 1st column. That is, the X-touch electrode (X-TE13) in the 1st row and 3rd column is connected to the 1st X-touch line (X-TL1), and the X-touch electrode (X-TE33) in the 3rd row and 3rd column is connected to the 3rd X-touch line (X-TL3). On the other hand, the X-touch electrode (X-TE23) in the 2nd row and 3rd column and the X-touch electrode (X-TE43) in the 4th row and 3rd column are not connected to the X-touch line (X-TL).

[0178] Similarly, for the X-touch electrodes (X-TE14, X-TE24, X-TE34, X-TE44) located in the 4th column, the X-touch line (X-TL) can be connected in the same structure as in the 2nd column. That is, the X-touch electrode (X-TE24) in the 2nd row and 4th column is connected to the 2nd X-touch line (X-TL2), and the X-touch electrode (X-TE44) in the 4th row and 4th column is connected to the 4th X-touch line (X-TL4). On the other hand, the X-touch electrode (X-TE14) in the 1st row and 4th column and the X-touch electrode (X-TE34) in the 3rd row and 4th column are not connected to the X-touch line (X-TL).

[0179] In this way, touch sensing performance can be improved by reducing the number of touch lines (TL) and securing the area of ​​the touch electrodes (TE) through a multi-feeding structure in which touch lines (TL) are arranged alternately and touch signals are simultaneously applied to X-touch electrodes (X-TE) in the same row.

[0180] Although the above description explains a multi-feeding structure in which touch lines (TL) are arranged alternately in units of two and touch signals are simultaneously applied to X-touch electrodes (X-TE) located in the same row, a multi-feeding structure in which touch lines (TL) are arranged alternately in units of N (N is a natural number greater than or equal to 2) and touch signals are simultaneously applied to X-touch electrodes (X-TE) located in the same row may also be possible.

[0181] Meanwhile, in a display device according to one embodiment of the present specification, the X-touch electrodes (X-TE) may all have the same shape, but some of the X-touch electrodes (X-TE) may have different shapes.

[0182] FIG. 12 is an exemplary drawing showing various structures of a touch electrode line (or touch wiring) in a display device according to one embodiment of the present specification.

[0183] Referring to FIG. 12, a display device according to one embodiment of the present specification (e.g., the display device (100) of FIG. 1) may include touch electrode lines (X-TEL, Y-TEL) of various structures.

[0184] For example, in a display device according to one embodiment of the present specification, as illustrated in reference numeral 1210, an X-touch electrode line (X-TEL) may be formed by X-touch electrodes (X-TE) of the same shape on both sides in the x-axis direction, based on a Y-touch electrode line (Y-TEL) of a single bar structure extending in the y-axis direction.

[0185] Alternatively, as shown in reference number 1220, a Y-touch electrode line (Y-TEL) consisting of two bars is formed in a split structure with a thin X-touch electrode line in between, and the X-touch electrode line (X-TEL) may be formed by X-touch electrodes (X-TE) of the same shape on both sides in the x-axis direction with respect to the Y-touch electrode line (Y-TEL) consisting of two bars.

[0186] At this time, the X-touch electrode line (X-TEL) separated by the Y-touch electrode line (Y-TEL) can each be connected through the X-touch electrode connection line (X-CL).

[0187] Meanwhile, the area of ​​the X-touch electrode line (X-TEL) to which the touch driving signal is applied and the area of ​​the Y-touch electrode line (Y-TEL) to which the touch sensing signal is transmitted may be the same or different.

[0188] For example, if one wishes to relatively reduce the parasitic capacitance caused by the Y-touch electrode line (Y-TEL) through which the touch sensing signal is transmitted, the area of ​​the Y-touch electrode line (Y-TEL) can be formed smaller than the area of ​​the X-touch electrode line (X-TEL). In this case, the area of ​​the X-touch electrode line (X-TEL) to which the touch driving signal is applied and the area of ​​the Y-touch electrode line (Y-TEL) through which the touch sensing signal is transmitted can be formed in a ratio of 5:1 to 2:1. As one example, the area of ​​the X-touch electrode line (X-TEL) and the area of ​​the Y-touch electrode line (Y-TEL) can be formed in a ratio of 4:1.

[0189] The structure of these touch electrode lines (X-TEL, Y-TEL) may be varied depending on the size or use of the touch display device (100).

[0190] Meanwhile, an X-touch line (X-TL) electrically connected to an X-touch electrode line (X-TEL) can be formed at a position spaced apart from the Y-touch electrode line (Y-TEL) by a certain distance.

[0191] FIG. 13 is a diagram illustrating an example of a touch line in a shifting area when the touch electrode line in a display device according to one embodiment of the present specification is made of a mesh-type touch electrode metal.

[0192] Referring to FIG. 13, in a display device according to one embodiment of the present specification (e.g., the display device (100) of FIG. 1), the X-touch electrode line (X-TEL) to which a touch driving signal is applied and the Y-touch electrode line (Y-TEL) to which a touch sensing signal is transmitted may be made of a mesh-type touch electrode metal having an opening.

[0193] In this case, the touch electrode lines (X-TEL, Y-TEL) may be extended in a structure in which an opening is formed in the center and the touch electrode metal surrounding the opening is repeated. Here, an example is shown in which the touch electrode metal surrounding the opening is formed in an octagonal shape.

[0194] At this time, the X-touch line (X-TL) that applies the touch driving signal extends along the octagonal touch electrode metal constituting the X-touch electrode line (X-TEL), and the designated X-touch line (X-TL) can be electrically connected to the corresponding X-touch electrode line (X-TEL) through a touch contact hole (TCH) at a position spaced apart from the Y-touch electrode line (Y-TEL) by a certain distance (D).

[0195] Meanwhile, the touch electrode lines (X-TEL, Y-TEL) may be made of transparent electrodes or include transparent electrodes to improve the luminescence efficiency of the subpixel (SP).

[0196] The display device can be used in mobile devices such as smartphones and tablet PCs, and in automotive displays, etc. In this case, the touch display device (100) may use an antenna to communicate with other devices.

[0197] At this time, the wireless signal transmission and reception performance and touch sensing performance of the display device using an antenna may be degraded due to electromagnetic interference with the touch driving signal transmitted through the touch electrode line (TEL) during the process of transmitting and receiving wireless signals in the high-frequency band.

[0198] To solve this problem, the touch display device (100) of the present specification may place a pseudo-touch electrode line capable of canceling out electromagnetic interference between a wireless signal and a touch driving signal in a non-display area.

[0199] Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not to limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical spirits within the equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0200] 100: Display device 110: Display panel 120: Gate driving circuit 130: Data driving circuit 140: Timing controller 150: Touch driving circuit 301: Display area 302: Non-display area

Claims

Claim 1 A display panel comprising a display area in which at least a portion is formed in a curved shape and a non-display area adjacent to the display area, wherein the display panel comprises a first pixel included in the display area, a second pixel disposed at a position corresponding to the curve of the display area, a first touch wiring disposed on a first plane on a plane on which the second pixel is disposed, a second touch wiring disposed on a second plane different from the first plane, and a light-blocking member disposed on the second pixel corresponding to the position of the second pixel, wherein the constituent material of the light-blocking member is the same as the constituent material of at least one of the first touch wiring and the second touch wiring, wherein the first pixel and the second pixel comprise a plurality of subpixels, and the first and second touch wirings are disposed between the plurality of subpixels. Claim 2 A display panel according to claim 1, wherein the first part of the second pixel is included in the display area and the second part of the second pixel is included in the non-display area, the area of ​​the first part and the second part depends on the position of the second pixel, and the size of the light-blocking member is related to the area of ​​the second part. Claim 3 A display panel according to paragraph 2, wherein the second pixel includes a light-emitting region, and the light-blocking member is disposed on at least a portion of the light-emitting region. Claim 4 A display panel according to paragraph 3, wherein the ratio of the area of ​​the light-blocking member to the area of ​​the light-emitting region corresponds to the ratio of the second part to the area of ​​the second pixel. Claim 5 A display panel according to claim 1, wherein the shape of the light-blocking member corresponds to the shape of the second pixel, a rectangle, or the shape of the outer edge of the second pixel. Claim 6 A display panel according to claim 1, wherein the shape of the display area corresponds to an elliptical or circular shape. Claim 7 delete Claim 8 A display panel according to claim 1, wherein the plane on which the light-blocking member is disposed corresponds to the first plane, and the constituent material of the light-blocking member is the constituent material of the first touch wiring. Claim 9 A display panel according to claim 1, wherein the plane on which the light-blocking member is disposed corresponds to the second plane, and the constituent material of the light-blocking member is the constituent material of the second touch wiring. Claim 10 A display panel according to claim 1, wherein the first touch wiring corresponds to a touch sensor electrode and the second touch wiring corresponds to a touch bridge electrode. Claim 11 A display device comprising a display panel including a display area in which at least a portion is formed in a curved shape and a non-display area adjacent to the display area, and a driving circuit for driving the display panel, wherein the display panel comprises a first pixel included in the display area, a second pixel disposed at a position corresponding to the curve of the display area, a first touch wiring disposed on a first plane on a plane on which the second pixel is disposed, a second touch wiring disposed on a second plane different from the first plane, and a light-blocking member disposed on the second pixel corresponding to the position of the second pixel, wherein the constituent material of the light-blocking member is the same as the constituent material of at least one of the first touch wiring and the second touch wiring, wherein the first pixel and the second pixel comprise a plurality of subpixels, and the first and second touch wirings are disposed between the plurality of subpixels. Claim 12 A display device according to claim 11, wherein the first part of the second pixel is included in the display area, the second part of the second pixel is included in the non-display area, the area of ​​the first part and the second part depends on the position of the second pixel, and the size of the light-blocking member is related to the area of ​​the second part. Claim 13 A display device according to claim 12, wherein the second pixel includes a light-emitting region, and the light-blocking member is disposed on at least a portion of the light-emitting region. Claim 14 A display device according to claim 13, wherein the ratio of the area of ​​the light-blocking member to the area of ​​the light-emitting region corresponds to the ratio of the second part to the area of ​​the second pixel. Claim 15 A display device according to claim 11, wherein the shape of the light-blocking member corresponds to the shape of the second pixel, a square, or the shape of the outer edge of the second pixel. Claim 16 A display device according to claim 11, wherein the shape of the display area corresponds to an elliptical or circular shape. Claim 17 delete Claim 18 A display device according to claim 11, wherein the plane on which the light-shielding member is disposed corresponds to the first plane, and the constituent material of the light-shielding member is the constituent material of the first touch wiring. Claim 19 A display device according to claim 11, wherein the plane on which the light-shielding member is disposed corresponds to the second plane, and the constituent material of the light-shielding member is the constituent material of the second touch wiring. Claim 20 A display device according to claim 11, wherein the first touch wiring corresponds to a touch sensor electrode and the second touch wiring corresponds to a touch bridge electrode.

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