Display device

Abstract

A display device is provided. A display device according to one embodiment includes a substrate comprising at least a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface; and a first side wiring disposed on the side surface of the substrate and extending in a first direction from the first surface toward the second surface, wherein the first side wiring comprises a first upper portion adjacent to the first surface, a first lower portion adjacent to the second surface, and a first connecting portion disposed between the first upper portion and the first lower portion, and at least one of the first upper portion and the first lower portion may have a width greater than that of the first connecting portion.

Description

Technology Field

[0001] The present invention relates to a display device. Background Technology

[0002] Electronic devices such as smartphones, tablet PCs, digital cameras, laptop computers, navigation systems, and smart televisions that provide video to users include a display device for displaying video.

[0003] The display device includes a display area capable of expressing various colors while operating on a pixel or sub-pixel basis, and a bezel area where wiring for driving the pixels or sub-pixels is arranged.

[0004] Recently, there has been an increasing demand for bezel-less technology that reduces or eliminates the bezel area to maximize the display area of ​​a display device, and in response to this, research and development on side wiring formation technology that forms wiring on the side of a substrate is steadily progressing. The problem to be solved

[0005] The problem that the present invention aims to solve is to provide a display device that prevents disconnection of the side wiring.

[0006] The problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0007] A display device according to one embodiment for solving the above problem comprises: a substrate including at least a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface; and a first side wiring disposed on the side surface of the substrate and extending in a first direction from the first surface toward the second surface, wherein the first side wiring comprises a first upper portion adjacent to the first surface, a first lower portion adjacent to the second surface, and a first connecting portion disposed between the first upper portion and the first lower portion, and at least one of the first upper portion and the first lower portion may have a width greater than that of the first connecting portion.

[0008] A display device according to another embodiment for solving the above problem comprises: a main body portion including at least a first surface and a second surface facing the first surface; and a substrate disposed on one side of the main body portion and including an edge portion connecting the first surface and the second surface of the main body portion. A plurality of side wirings are arranged on the edge portion and spaced apart from each other, wherein the edge portion comprises a first flat surface that is in contact with the first surface and parallel to the first surface, a first chamfered surface that is inclined toward the interior of the substrate relative to the first flat surface and is in contact with the first flat surface, and a second flat surface that is inclined toward the interior of the substrate relative to the first chamfered surface and is in contact with the first chamfered surface, and each of the plurality of side wirings comprises an upper portion adjacent to the first surface, a lower portion adjacent to the second surface, and a connecting portion that connects the upper portion and the lower portion and has a width smaller than that of the upper portion, wherein the upper portion can cover the first flat surface, the first chamfered surface, and the second flat surface.

[0009] A display device according to another embodiment for solving the above problem comprises: a substrate including at least a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface; and a first side wiring and a second side wiring disposed on the side surface of the substrate, extending in a first direction toward the second surface from the first surface and spaced apart from each other in a second direction intersecting the first direction, wherein the first side wiring includes a first upper portion adjacent to the first surface, a first lower portion adjacent to the second surface, and a first connecting portion disposed between the first upper portion and the first lower portion, and the second side wiring includes a second upper portion adjacent to the first surface, a second lower portion adjacent to the second surface, and a second connecting portion disposed between the second upper portion and the second lower portion, and the distance between the first upper portion and the second upper portion may be smaller than the distance between the first connecting portion and the second connecting portion. Effects of the invention

[0010] The display device according to an embodiment of the present invention can prevent disconnection of the side wiring.

[0011] The effects according to the embodiments are not limited to those exemplified above, and a wider variety of effects are included in this specification. Brief explanation of the drawing

[0012] FIG. 1 is a perspective view illustrating the schematic shape of a display device according to one embodiment. FIG. 2 is a plan view showing the first surface of the substrate body part. FIG. 3 is a perspective view schematically illustrating the shape of the side wiring arranged on the edge of the substrate. Figure 4 is a schematic cross-sectional view showing a cross-section cut along the line X1-X1' of Figure 3. FIG. 5 is a plan view showing a first flat surface of the substrate edge portion and a part of the first surface of the main body portion. FIG. 6 is a plan view showing the third flat surface of the substrate edge portion and a part of the second surface of the main body portion. FIG. 7 is a plan view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to the embodiment of FIG. 1. FIG. 8 is a plan view illustrating a tile-type display device formed by a plurality of display devices according to one embodiment. FIG. 9 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 10 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 11 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 12 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 13 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 14 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 15 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 16 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 17 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment. FIG. 18 is a perspective view schematically illustrating the shape of a side wiring arranged on the edge portion of a substrate of a display device according to another embodiment. FIG. 19 is a schematic cross-sectional view of a section cut along the line X2-X2' of FIG. 18. FIG. 20 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion according to the embodiment of FIG. 18. Specific details for implementing the invention

[0013] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0014] When an element or layer is referred to as "above" another element or layer, it includes cases where another layer or element is interposed directly above or in the middle of another element. Likewise, when referred to as "below," "left," and "right," it includes cases where another layer or material is interposed immediately adjacent to another element or in the middle. Throughout the specification, the same reference numerals refer to the same components.

[0015] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention.

[0016] The features of each of the various embodiments of the present invention 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 may be implemented together in an associated relationship.

[0017] Specific embodiments will be described below with reference to the attached drawings.

[0018] FIG. 1 is a perspective view illustrating the schematic shape of a display device according to one embodiment. FIG. 2 is a plan view illustrating the first surface of the substrate body portion. FIG. 3 is a perspective view schematically illustrating the shape of a side wiring arranged on the substrate edge portion. FIG. 4 is a cross-sectional view schematically illustrating a cross section cut along the line X1-X1' of FIG. 3. FIG. 5 is a plan view illustrating the first flat surface of the substrate edge portion and a part of the first surface of the main body portion. FIG. 6 is a plan view illustrating the third flat surface of the substrate edge portion and a part of the second surface of the main body portion.

[0019] Referring to FIGS. 1 to 3, a display device (1) according to one embodiment may be applied to portable electronic devices such as a mobile phone, a smartphone, a tablet PC, a mobile communication terminal, an electronic notebook, an e-book, a PMP (portable multimedia player), a navigation system, a UMPC (Ultra Mobile PC), etc. Alternatively, a display device (1) according to one embodiment may be applied to a television, a laptop, a monitor, an advertising board, or a display unit of the Internet of Things (IOT).

[0020] The display device (1) has a three-dimensional shape. For example, the display device (1) may have a rectangular prism or a similar three-dimensional shape. In the drawings, the direction parallel to the first side of the display device (1) is indicated as the first direction (DR1), the direction parallel to the second side of the display device (1) is indicated as the second direction (DR2), and the thickness direction of the display device (1) is indicated as the third direction (DR3). In the following specification, unless otherwise specified, "direction" may refer to both directions extending along that direction. Additionally, if it is necessary to distinguish between the two "directions" extending to both sides, one side is designated as "direction one side" and the other side as "direction other side." Based on FIG. 1, the direction in which the arrow points is designated as the first side, and the opposite direction is designated as the other side. The first direction (DR1) and the second direction (DR2) are perpendicular to each other, the first direction (DR1) and the third direction (DR3) are perpendicular to each other, and the second direction (DR2) and the third direction (DR3) may be perpendicular to each other.

[0021] The display device (1) may be formed in a planar shape similar to a rectangle. For example, the display device (1) may have a planar shape similar to a rectangle having a short side in the first direction (DR1) and a long side in the second direction (DR2), as shown in FIG. 1. The corner where the short side in the first direction (DR1) and the long side in the second direction (DR2) meet may be formed rounded to have a predetermined curvature or formed at a right angle. The planar shape of the display device (1) is not limited to a rectangle and may be formed similarly to other polygons, circles, or ellipses.

[0022] The display device (1) includes a display area (DA) on one side of the third direction (DR3) (hereinafter referred to as the "top surface") where a screen is displayed, and may include a non-display area (NDA) where a screen is not displayed as an area other than the display area (DA). Specifically, the non-display area (NDA) may be placed on a part of the top surface of the display device (1), on both sides of the second direction (DR2) of the display device (1) (hereinafter referred to as the "side surfaces"), on both sides of the first direction (DR1), and on the other side of the third direction (DR3) (hereinafter referred to as the "bottom surface"), but is not limited thereto. In some embodiments, the non-display area (NDA) may be placed to surround the edge of the display area (DA), but is not limited thereto.

[0023] A plurality of pixels (PX) for displaying a screen are arranged in the display area (DA) of the display device (1), and a plurality of side wires (100) may be arranged in the non-display area (NDA) of the display device (1) as wiring for driving the plurality of pixels (PX), as described below. A detailed explanation thereof will be provided later.

[0024] Meanwhile, the display area (DA) and non-display area (NDA) of the display device (1) can also be applied to the substrate (SUB) described later.

[0025] The substrate (SUB) can serve as the base of the display device (1). In some embodiments, the substrate (SUB) may include glass as a rigid substrate (SUB) having rigidity, but is not limited thereto. For example, the substrate (SUB) may include polyimide as a flexible substrate (SUB) having flexibility. For convenience of explanation, the following description will focus on the case where the substrate (SUB) includes glass as a rigid substrate (SUB).

[0026] The substrate (SUB) may include a main body part (MP) and an edge part (EP).

[0027] The main body portion (MP) of the substrate (SUB) occupies most of the substrate (SUB), and the edge portion (EP) of the substrate (SUB) may be positioned on one side of the first direction (DR1) of the main body portion (MP) to occupy the edge of the substrate (SUB). In some embodiments, the edge portion (EP) may be positioned only on one side of the first direction (DR1) of the main body portion (MP), but is not limited thereto. For example, the edge portion (EP) may be positioned on both sides of the first direction (DR1) and both sides of the second direction (DR2) of the main body portion (MP) to occupy the edges on both sides of the first direction (DR1) and both sides of the second direction (DR2) of the display device (1).

[0028] The main body (MP) of the substrate (SUB) may include a first surface (MP_1) as one side of the third direction (DR3) and a second surface (MP_2) as the other side of the third direction (DR3) (see FIG. 4 and FIG. 6). The first surface (MP_1) and the second surface (MP_2) may face each other in the third direction (DR3).

[0029] The first surface (MP_1) of the main body (MP) may overlap with a display area (DA) and a portion of a non-display area (NDA). Specifically, the display area (DA) is positioned within the first surface (MP_1), and the non-display area (NDA) is formed to surround the display area (DA), so that a portion of the non-display area (NDA) may overlap with the first surface (MP_1). The first surface (MP_1) of the main body (MP) may be parallel to the upper surface of the substrate (SUB), and the second surface (MP_2) of the main body (MP) may be parallel to the lower surface of the substrate (SUB).

[0030] Referring to FIG. 5, a plurality of pixels (PX) and connecting wires (CL) may be arranged on the first surface (MP_1) of the main body (MP).

[0031] Multiple pixels (PX) can emit light to display a screen. Multiple pixels (PX) may be arranged on a portion of the first surface (MP_1) of the main body (MP) that overlaps with the display area (DA). Multiple pixels (PX) may be arranged in a grid pattern in the display area (DA). Although not shown in the drawings, each of the multiple pixels (PX) may include a light-emitting element that emits light and a thin-film transistor that controls the light-emitting element. The light-emitting element may be any type of light-emitting element. For example, the light-emitting element may be an organic light-emitting diode (OLED) including an organic light-emitting layer made of organic material, a quantum dot light-emitting diode (QD) including a quantum dot light-emitting layer, an inorganic light-emitting diode including an inorganic semiconductor, or a micro LED.

[0032] A plurality of connecting wires (CL) disposed on the first area can serve to electrically connect a plurality of pixels (PX) and a plurality of first pads (PAD1) described later. A plurality of pixels (PX) may be disposed on an area that overlaps with a non-display area (NDA) among the first surfaces (MP_1) of the main body (MP). A plurality of connecting wires (CL) may be extended toward the edge portion (EP), that is, in the first direction (DR1), and may be disposed spaced apart from each other in the second direction (DR2). Although FIG. 2 is illustrated as having two connecting wires (CL) extending to each of the plurality of pixels (PX), it is obvious that the number of connecting wires (CL) is not limited thereto.

[0033] Referring to FIG. 6, a driving unit (DRV) may be disposed on the second surface (MP_2) of the main body (MP).

[0034] The driving unit (DRV) can function to drive a plurality of pixels (PX). The driving unit (DRV) can be positioned on a second surface (MP_2) facing a first surface (MP_1). As the driving unit (DRV) is positioned on the second surface (MP_2), the number of pixels (PX) positioned on the first surface (MP_1) can be increased, and accordingly, the occupied area of ​​the display region (DA) on the upper surface of the display device (1) can be expanded, and the occupied area of ​​the non-display region (NDA) can be reduced.

[0035] In some embodiments, the driving unit (DRV) may be implemented as a printed circuit board (PCB), but is not limited thereto.

[0036] A second pad (PAD2) placed on the second surface (MP_2) can serve to electrically connect the driving unit (DRV) and the side wiring (100). In some embodiments, as shown in FIG. 6, the driving unit (DRV) may be electrically connected to the side wiring (100) by the second pad (PAD2) placed on the edge portion (EP), but is not limited thereto. For example, the driving unit (DRV) may be directly connected to the side wiring (100) of the edge portion (EP) without a separate pad.

[0037] Referring to FIGS. 3 and 4, the edge portion (EP) of the substrate (SUB) may be positioned on one side of the first direction (DR1) of the main body portion (MP). The edge portion (EP) may overlap with the non-display area (NDA) and not overlap with the display area (DA). The edge portion (EP) of the substrate (SUB) may be an edge including a side surface connecting the upper surface and the lower surface of the substrate (SUB).

[0038] In some embodiments, the edge portion (EP) may have a chamfered shape as shown in FIGS. 3 and 4, but is not limited thereto. Specifically, the edge portion (EP) may include, but is not limited to, a first flat surface (EP_1) that is parallel to the upper surface of the substrate (SUB) and in direct contact with the first surface (MP_1) of the main body portion (MP), a first chamfered surface (EP_4a) that is in direct contact with the first flat surface (EP_1) and is inclined toward the interior of the substrate (SUB) with respect to the first flat surface (EP_1), a second flat surface (EP_2) that is in direct contact with the first chamfered surface (EP_4a) and is inclined toward the interior of the substrate (SUB) with respect to the first chamfered surface (EP_4a), a third flat surface (EP_3) that is parallel to the lower surface of the substrate (SUB), and a second chamfered surface (EP_4b) that is in direct contact with the third flat surface (EP_3) and the second flat surface (EP_2) and is inclined toward the interior of the substrate (SUB) with respect to the third flat surface (EP_3). If the edge portion (EP) has a chamfered shape, damage such as chipping can be prevented from occurring on the side wiring (100).

[0039] In some embodiments, the angle formed by a plane parallel to the second flat plane (EP_2) and a plane parallel to the first flat plane (EP_1) may be 90°, but is not limited thereto. In some embodiments, the angle (θ1) formed inside the substrate (SUB) by contacting the first flat plane (EP_1) and the first chamfered plane (EP_4a) may be an obtuse angle of 90° or more, and the angle (θ4) formed inside the substrate (SUB) by contacting the third flat plane (EP_3) and the second chamfered plane (EP_4b) may be an obtuse angle of 90° or more, but is not limited thereto. In some embodiments, the angle (θ2) formed inside the substrate (SUB) by contacting the second flat surface (EP_2) and the first chamfered surface (EP_4a) may be an obtuse angle of 90° or more, and the angle (θ3) formed inside the substrate (SUB) by contacting the second flat surface (EP_2) and the second chamfered surface (EP_4b) may be an obtuse angle of 90° or more, but is not limited thereto.

[0040] With the above configuration, one side of the third direction (DR3) of the substrate (SUB) (hereinafter referred to as the 'top surface') includes the first surface (MP_1) of the main body part (MP) and the first flat surface (EP_1) of the edge part (EP), and the other side of the third direction (DR3) (hereinafter referred to as the 'bottom surface') includes the second surface (MP_2) of the main body part (MP) and the third flat surface (EP_3) of the edge part (EP), and one side of the first direction (DR1) of the substrate (SUB) (hereinafter referred to as the 'side surface') may include the first chamfered surface (EP_4a), the second flat surface (EP_2), and the second chamfered surface (EP_4b) of the edge part (EP).

[0041] A plurality of first pads (PAD1), a plurality of second pads (PAD2), and a plurality of side wirings (100) may be arranged on the edge portion (EP) of the substrate (SUB).

[0042] The first pad (PAD1) can serve to electrically connect the connecting wire (CL) and the side wire (100). The first pad (PAD1) can be placed on the first flat surface (EP_1) of the edge portion (EP) on the upper surface of the display device (1). The first pad (PAD1) placed on the first flat surface (EP_1) can be positioned between a plurality of pixels (PX) and a plurality of side wires (100), as shown in FIG. 5. The second pad (PAD2) can be placed on the third flat surface (EP_3) of the edge portion (EP) on the lower surface of the display device (1). The second pad (PAD2) placed on the third flat surface (EP_3) can be positioned between the driving portion (DRV) and the side wire (100), as shown in FIG. 6. In some embodiments, the boundary between the other end of the first direction (DR1) of the first pad (PAD1) and the first flat surface (EP_1) and the first surface (MP_1) may be aligned, and the boundary between the other end of the first direction (DR1) of the second pad (PAD2) and the third flat surface (EP_3) and the second surface (MP_2) may be aligned, but is not limited thereto.

[0043] Referring to FIGS. 3 to 6, a plurality of side wirings (100) can serve to electrically connect a plurality of pixels (PX) and a driving unit (DRV). The plurality of side wirings (100) are arranged on the side of a substrate (SUB) and extend in a third direction (DR3) and can be spaced apart from each other in a second direction (DR2). Specifically, the plurality of side wirings (100) can cover a part of the first flat surface (EP_1), the entire first chamfered surface (EP_4a), the entire second flat surface (EP_2), the entire second chamfered surface (EP_4b), and a part of the third flat surface (EP_3) of the edge portion (EP).

[0044] A plurality of side wirings (100) may include a first side wiring (110) and a second side wiring (120) positioned adjacent to the first side wiring (110). The first side wiring (110) and the second side wiring (120) are spaced apart from each other in a second direction (DR2). The first side wiring (110) and the second side wiring (120) may be repeatedly positioned in the second direction (DR2).

[0045] The first side wiring (110) may include a first upper portion (110a) adjacent to a plurality of pixels (PX), a first lower portion (110c) adjacent to a driving portion (DRV), and a first connecting portion (110b) disposed between the first upper portion (110a) and the first lower portion (110c) to connect the first upper portion (110a) and the first lower portion (110c). The first upper portion (110a), the first connecting portion (110b), and the first lower portion (110c) may be formed integrally. The first upper portion (110a) may include a first_1 upper portion (110a_1) that overlaps with a first pad (PAD1) placed on a first flat surface (EP_1) and a first_2 upper portion (110a_2) that is in direct contact with a first chamfered surface (EP_4a), and the first lower portion (110c) may include a first_1 lower portion (110c_1) that overlaps with a second pad (PAD2) placed on a third flat surface (EP_3) and a first_2 lower portion (110c_2) that is in direct contact with a second chamfered surface (EP_4b). At least one of the second direction (DR2) width of the first upper portion (110a) and the second direction (DR2) width of the first lower portion (110c) may be larger than the second direction (DR2) width of the first connecting portion (110b). In some embodiments, the second direction (DR2) width of the first upper part (110a) and the second direction (DR2) width of the first lower part (110c) may be larger than the second direction (DR2) width of the first connecting part (110b), but are not limited thereto. For convenience of explanation, the following description focuses on the case where the second direction (DR2) width of the first upper part (110a) and the second direction (DR2) width of the first lower part (110c) are larger than the second direction (DR2) width of the first connecting part (110b).

[0046] The second side wiring (120) may include a second upper portion (120a) adjacent to a plurality of pixels (PX), a second lower portion (120c) adjacent to a driving portion (DRV), and a second connecting portion (120b) disposed between the second upper portion (120a) and the second lower portion (120c) to connect the second upper portion (120a) and the second lower portion (120c). The second upper portion (120a), the second connecting portion (120b), and the second lower portion (120c) may be formed integrally. The second upper portion (120a) may include a second_1 upper portion (120a_1) that overlaps with a first pad (PAD1) placed on a first flat surface (EP_1) and a second_2 upper portion (120a_2) that is in direct contact with a first chamfered surface (EP_4a), and the second lower portion (120c) may include a second_1 lower portion (120c_1) that overlaps with a second pad (PAD2) placed on a third flat surface (EP_3) and a second_2 lower portion (120c_2) that is in direct contact with a second chamfered surface (EP_4b). At least one of the second direction (DR2) width of the second upper portion (120a) and the second direction (DR2) width of the second lower portion (120c) may be larger than the second direction (DR2) width of the second connecting portion (120b). In some embodiments, the second direction (DR2) width of the second upper part (120a) and the second direction (DR2) width of the second lower part (120c) may be larger than the second direction (DR2) width of the second connecting part (120b), but are not limited thereto. For convenience of explanation, the following description focuses on cases where the second direction (DR2) width of the second upper part (120a) and the second direction (DR2) width of the second lower part (120c) are larger than the second direction (DR2) width of the second connecting part (120b).

[0047] A plurality of side wirings (100) may include metal. For example, a plurality of side wirings (100) may include silver (Ag) or copper (Cu), but are not limited thereto.

[0048] Meanwhile, a plurality of side wirings (100) may be formed by applying silver (Ag) or copper (Cu) paste to a silicon mold (Si mold) and transferring it to the side of a substrate (SUB), but is not limited thereto. For example, a plurality of side wirings (100) may be formed by applying silver or copper paste to the entire side of the substrate (SUB) and then etching it. For convenience of explanation, the following description will focus on the case where a plurality of side wirings (100) are formed by applying silver or copper paste to a silicon mold and transferring it to the side of a substrate (SUB). In this case, there is a risk that the side wiring (100) may be disconnected because the thickness of the side wiring (100) is formed thinly at the first_1 corner (DL_1a), defined as the boundary between the first flat surface (EP_1) and the first chamfered surface (EP_4a); the first_2 corner (DL_1b), defined as the boundary between the first chamfered surface (EP_4a) and the second flat surface (EP_2); the second_1 corner (DL_2a), defined as the boundary between the second flat surface (EP_2) and the second chamfered surface (EP_4b); and the second_2 corner (DL_2b), defined as the boundary between the second chamfered surface (EP_4b) and the third flat surface (EP_3). Accordingly, it is necessary to widen the second direction (DR2) of the side wiring (100) near the first_1 corner (DL_1a), the first_2 corner (DL_1b), the second_1 corner (DL_2a), and the second_2 corner (DL_2b) to prevent the side wiring (100) from being disconnected.

[0049] Below, the shape of the first side wiring (110), the shape of the second side wiring (120), and the use of the display device (1) according to one embodiment will be described in detail.

[0050] FIG. 7 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to an embodiment of FIG. 1. FIG. 8 is a plan view illustrating a tile-type display device formed by a plurality of display devices according to an embodiment.

[0051] If the first surface (MP_1) and second surface (MP_2) of the main body (MP) and the first flat surface (EP_1), second flat surface (EP_2), third flat surface (EP_3), first chamfered surface (EP_4a) and second chamfered surface (EP_4b) of the edge portion (EP) are arranged on a plane parallel to the second flat surface (EP_2) based on FIG. 4, it can be illustrated as in FIG. 7. In other words, when the remaining surfaces excluding the second flat surface (EP_2) of the edge portion (EP) are spread out so as to be placed on a plane parallel to the second flat surface (EP_2), they can be arranged in the order of the second surface (MP_2) of the main body portion (MP), the third flat surface (EP_3) of the edge portion (EP), the second chamfered surface (EP_4b) of the edge portion (EP), the second flat surface (EP_2) of the edge portion (EP), the first chamfered surface (EP_4a) of the edge portion (EP), the first flat surface (EP_1) of the edge portion (EP), and the first surface (MP_1) of the main body portion (MP) based on the third direction (DR3). For convenience of explanation, the first pad (PAD1), the second pad (PAD2), and the connecting wire (CL) are omitted in FIG. 7.

[0052] In this case, a first_1 edge (DL_1a) is defined as the boundary between the first flat surface (EP_1) and the first chamfered surface (EP_4a), a first_2 edge (DL_1b) is defined as the boundary between the first chamfered surface (EP_4a) and the second flat surface (EP_2), a second_1 edge (DL_2a) is defined as the boundary between the second flat surface (EP_2) and the second chamfered surface (EP_4b), and a second_2 edge (DL_2b) is defined as the boundary between the second chamfered surface (EP_4b) and the third flat surface (EP_3). The first_1 edge (DL_1a), the first_2 edge (DL_1b), the second_1 edge (DL_2a), and the second_2 edge (DL_2b) may be straight lines parallel to the second direction (DR2).

[0053] Referring to FIG. 7, the second direction (DR2) width of the first upper part (110a) of the first side wiring (110) is larger than the second direction (DR2) width of the first connecting part (110b), and the second direction (DR2) width of the first lower part (110c) may be larger than the second direction (DR2) width of the first connecting part (110b).

[0054] The second direction (DR2) width of the first upper portion (110a) of the first side wiring (110) may gradually increase in the direction toward one side of the third direction (DR3). In some embodiments, as the maximum width of the second direction (DR2) of the first upper portion (110a), the width (Wa) of one end of the third direction (DR3) is greater than the second direction (DR2) width (Wb) of the first connection portion (110b), and as the minimum width of the second direction (DR2) of the first upper portion (110a), the second direction (DR2) width of the portion in contact with the first connection portion (110b) may be substantially the same as the second direction (DR2) width (Wb) of the first connection portion (110b), but is not limited thereto.

[0055] The second direction (DR2) width of the first lower portion (110b) of the first side wiring (110) may gradually increase in the direction toward the other side of the third direction (DR3). In some embodiments, as the maximum width of the second direction (DR2) of the first lower portion (110b), the width (Wc) of the other end of the third direction (DR3) is greater than the second direction (DR2) width (Wb) of the first connection portion (110b), and as the minimum width of the second direction (DR2) of the first lower portion (110b), the second direction (DR2) width of the portion in contact with the first connection portion (110b) may be substantially the same as the second direction (DR2) width (Wb) of the first connection portion (110b), but is not limited thereto.

[0056] The first upper portion (110a) of the first side wiring (110) corresponds to the second upper portion (120a) of the second side wiring (120), the first connecting portion (110b) corresponds to the second connecting portion (120b), and the first lower portion (110c) corresponds to the second lower portion (120c). In some embodiments, the shape of the first side wiring (110) and the shape of the second side wiring (120) may be substantially the same, but are not limited thereto. For convenience of explanation, the following description will focus on the fact that the shape of the first side wiring (110) and the shape of the second side wiring (120) are identical, and a detailed description of the shape of the second side wiring (120) will be omitted.

[0057] The first upper portion (110a) of the first side wiring (110) can serve to prevent disconnection of the side wiring (100). As described above, the first upper portion (110a) may include a first_1 upper portion (110a_1) that overlaps with the first pad (PAD1) and a first_2 upper portion (110a_2) that does not overlap with the first pad (PAD1). In this case, the boundary between the first_1 upper portion (110a_1) and the first_2 upper portion (110a_2) may be placed on the first flat surface (EP_1), and the boundary between the first_2 upper portion (110a_2) and the first connecting portion (110b) may be placed on the second flat surface (EP_2). In other words, the first_2 upper portion (110a_2) can cover a portion of the first flat surface (EP_1), the entire first chamfered surface (EP_4a), and a portion of the second flat surface (EP_2). Accordingly, the first_2 upper portion (110a_2) can cover the first_1 edge (DL_1a) and the first_2 edge (DL_1b).

[0058] The first connecting portion (110b) may serve to connect the first upper portion (110a) and the first lower portion (110c). The first connecting portion (110b) may be placed on the second flat surface (EP_2). In some embodiments, the first connecting portion (110b) may have a rectangular shape with a constant width in the second direction (DR2), but is not limited thereto.

[0059] The first lower portion (110c) can serve to prevent disconnection of the side wiring (100). As described above, the first lower portion (110c) may include a first_1 lower portion (110c_1) that overlaps with the second pad (PAD2) and a first_2 lower portion (110c_2) that does not overlap with the second pad (PAD2). In this case, the boundary between the first_1 lower portion (110c_1) and the first_2 lower portion (110c_2) may be placed on the third flat surface (EP_3), and the boundary between the first_2 lower portion (110c_2) and the first connecting portion (110b) may be placed on the second flat surface (EP_2). In other words, the 1_2 lower portion (110c_2) can cover part of the 3rd flat surface (EP_3), the entire 2nd chamfered surface (EP_4b), and part of the 2nd flat surface (EP_2). Accordingly, the 1_2 lower portion (110c_2) can cover the 2_1 edge (DL_2a) and the 2_2 edge (DL_2b).

[0060] At the boundary between the first lower portion (110c) and the first connecting portion (110b), the width of the second direction (DR2) of the first lower portion (110c) and the width of the second direction (DR2) of the first connecting portion (110b) may be substantially the same. Accordingly, the width of the second direction (DR2) of the first_2 lower portion (110c_2) covering the second_1 corner (DL_2a) and the second_2 corner (DL_2b) may be greater than the width of the second direction (DR2) of the first connecting portion (110b). In some embodiments, the width of the second direction (DR2) of the first lower portion (110c) may increase toward the other side of the third direction (DR3), but is not limited thereto.

[0061] Meanwhile, the spacing distance between the first side wiring (110) and the second side wiring (120) may vary depending on the location. Specifically, the spacing distance (D1) between the first upper part (110a) of the first side wiring (110) and the second upper part (120a) of the second side wiring (120) may be smaller than the spacing distance (D2) between the first connecting part (110b) and the second connecting part (120b), and the spacing distance (D3) between the first lower part (110c) and the second lower part (120c) may be smaller than the spacing distance (D2) between the first connecting part (110b) and the second connecting part (120b).

[0062] In some embodiments, the separation distance (D1) between the first upper portion (110a) and the second upper portion (120a) may increase along one side of the third direction (DR3), and the separation distance (D3) between the first lower portion (110c) and the second lower portion (120c) may increase along the other side of the third direction (DR3), but is not limited thereto.

[0063] Due to the shape of the first side wiring (110) as described above, the first upper part (110a) has a wide coverage area for the first_1 corner (DL_1a) and the first_2 corner (DL_1b), thereby reducing the probability of a disconnection occurring at the first_1 corner (DL_1a) and the first_2 corner (DL_1b), and the first lower part (110c) has a wide coverage area for the second_1 corner (DL_2a) and the second_2 corner (DL_2b), thereby reducing the probability of a disconnection occurring at the second_1 corner (DL_2a) and the second_2 corner (DL_2b).

[0064] Referring to FIG. 8, a display device (1) according to one embodiment can form a tile-type display that displays a large screen by having a plurality of them arranged in a grid pattern. In this case, the display device (1) according to one embodiment acts as a cell of the tile-type display and displays a part of the screen to be displayed on the tile-type display, so it is necessary to minimize the non-display area (NDA). According to the configuration described above, the display device (1) according to one embodiment can effectively form a tile-type display by minimizing the non-display area (NDA) on the top surface and simultaneously preventing the disconnection of the side wiring (100) arranged on the side.

[0065] Hereinafter, another embodiment of the display device (1) will be described. In the following embodiments, components identical to those in the previously described embodiment will be referred to by the same reference numerals, and redundant descriptions will be omitted or simplified, with the focus on the differences.

[0066] FIG. 9 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0067] Referring to FIG. 9, the first side wiring (111) and the second side wiring (121) of the display device (1_1) according to the present embodiment may have a shape that is 180° symmetrical. Specifically, the width of the second direction (DR2) of the first upper part (111a) of the first side wiring (111) may be greater than the width of the second direction (DR2) of the first connecting part (111b) and the width of the second direction (DR2) of the first lower part (111c), and the width of the second direction (DR2) of the second side wiring (121) of the second lower part (121c) may be greater than the width of the second direction (DR2) of the second connecting part (121b) and the width of the second direction (DR2) of the second upper part (121a).

[0068] The first side wiring (111) and the second side wiring (121) of the display device (1_1) according to the present embodiment have a shape that is 180° symmetrical, so that the first upper part (111a) of the first side wiring (111) corresponds to the second lower part (121c) of the second side wiring (121), the first connecting part (111b) of the first side wiring (111) corresponds to the second connecting part (121b) of the second side wiring (121), and the first lower part (111c) of the first side wiring (111) corresponds to the second upper part (121a). Since the first side wiring (111) and the second side wiring (121) have substantially the same shape with only the orientation differing, the following description will focus on the first side wiring (111), and a detailed description of the second side wiring (121) will be omitted.

[0069] The second direction (DR2) width of the first upper portion (111a) of the first side wiring (111) may gradually increase in the direction toward one side of the third direction (DR3). In some embodiments, as the maximum second direction (DR2) width of the first upper portion (111a), the width (W1a) of one end of the third direction (DR3) is greater than the second direction (DR2) width (W1b) of the first connection portion (111b), and as the minimum second direction (DR2) width of the first upper portion (111a), the second direction (DR2) width of the portion in contact with the first connection portion (111b) may be substantially the same as the second direction (DR2) width (W1b) of the first connection portion (111b), but is not limited thereto.

[0070] In some embodiments, the second direction (DR2) width (W1b) of the first connection portion (111b) of the first side wiring (111) and the second direction (DR2) width (W1c) of the first lower portion (111c) may be substantially the same, but are not limited thereto.

[0071] Accordingly, the separation distance between the first side wiring (111) and the second side wiring (121) is relatively short enough so that no electrical short occurs, thereby reducing the separation distance (D1', D2', D3') between the first side wiring (111) and the second side wiring (121) overall, and increasing the density of the side wirings placed at the edge portion (EP).

[0072] FIG. 10 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0073] Referring to FIG. 10, the display device (1_2) according to the present embodiment illustrates that the width of the first side wiring (110) may be greater than the width of the second side wiring (122). Specifically, the shape of the first side wiring (110) according to the present embodiment is substantially the same as the first side wiring (110) according to the embodiment of FIG. 7, and the second direction (DR2) width of the second side wiring (122) according to the present embodiment may be smaller than the second direction (DR2) width of the first upper part (112a) of the first side wiring (112).

[0074] In some embodiments, the second direction (DR2) width (W2a) of the second upper portion (122a) of the second side wiring (122), the second direction (DR2) width (W2b) of the second connection portion (122b), and the second direction (DR2) width (W2c) of the second lower portion (122c) may be substantially the same, but are not limited thereto.

[0075] Accordingly, the separation distance between the first side wiring (110) and the second side wiring (122) is relatively short enough so that a short circuit does not occur, thereby reducing the separation distance (D1``, D2``, D3``) between the first side wiring (112) and the second side wiring (122) overall, and increasing the density of the side wirings placed on the edge portion (EP).

[0076] FIG. 11 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0077] Referring to FIG. 11, the shape of the first upper part (110a) of the first side wiring (110) of the display device (1_3) according to the present embodiment and the shape of the second upper part (123a) of the second side wiring (123) are symmetrical by 180°, and the shape of the first lower part (110c) of the first side wiring (110) and the shape of the second lower part (123c) of the second side wiring (123) are symmetrical by 180°. Specifically, the width of the second direction (DR2) of the first upper part (110a) of the first side wiring (110) increases as it moves toward one side of the third direction (DR3), the width of the second direction (DR2) of the second upper part (123a) of the second side wiring (123) decreases as it moves toward one side of the third direction (DR3), the width of the second direction (DR2) of the first lower part (110c) of the first side wiring (110) increases as it moves toward the other side of the third direction (DR3), and the width of the second direction (DR2) of the second lower part (123c) of the second side wiring (123) decreases as it moves toward the other side of the third direction (DR3). Since the first side wiring (110) according to the present embodiment is substantially the same as the first side wiring (110) according to the embodiment of FIG. 7, the following description will focus on the second side wiring (123), and a detailed description of the first side wiring (110) will be omitted.

[0078] The width of the second direction (DR2) of the second upper part (123a) decreases as it goes toward one side of the third direction (DR3), but may be larger than the width of the second direction (DR2) of the second connecting part (123b). In some embodiments, as a maximum width in the second direction (DR2) of the second upper portion (123a), the width in the second direction (DR2) (W3a) of the portion in contact with the second connecting portion (123b) is greater than the width in the second direction (DR2) (W3b) of the second connecting portion (123b), and the width in the second direction (DR2) (W3a') of the second upper portion (123a) covering the first_1 corner (DL_1a) is smaller than the width in the second direction (DR2) (W3a) of the portion in contact with the second connecting portion (123b) and may be greater than the width in the second direction (DR2) (W3b) of the second connecting portion (123b), but is not limited thereto. In other words, the width of the second direction (DR2) of the second_2 upper part (123a_2) is largest near the boundary with the second connecting part (123b) and may be smallest near the boundary between the second_2 upper part (123a_2) and the second_1 upper part (123a_1), but the width of the second direction (DR2) of the second_2 upper part (123a_2) near the boundary with the second_1 upper part (123a_1) may be larger than the width of the second direction (DR2) of the second connecting part (123b).

[0079] The second connecting portion (123b) may serve to connect the second upper portion (123a) and the second lower portion (123c). The second direction (DR2) width (W3b) of the second connecting portion (123b) may be smaller than the second direction (DR2) width of the second upper portion (123a) and the second direction (DR2) width of the second lower portion (123c). In some embodiments, the second connecting portion (123b) may have a rectangular shape in which the width of the second direction (DR2) is substantially the same along the third direction (DR3), but is not limited thereto.

[0080] The width of the second direction (DR2) of the second lower part (123c) decreases as it goes toward the other side of the third direction (DR3), but may be larger than the width of the second direction (DR2) of the second connecting part (123b). In some embodiments, as a maximum width of the second direction (DR2) of the second lower portion (123c), the width of the second direction (DR2) (W3c) of the portion in contact with the second connecting portion (123b) is greater than the width of the second direction (DR2) of the second connecting portion (123b) (W3b), and the width of the second direction (DR2) (W3c') of the second lower portion (123c) covering the second_1 corner (DL_2a) is smaller than the width of the second direction (DR2) (W3c) of the portion in contact with the second connecting portion (123b) and may be greater than the width of the second direction (DR2) of the second connecting portion (123b) (W3b), but is not limited thereto. In other words, the width of the second direction (DR2) of the second_2 lower part (123c_2) is largest near the boundary with the second connecting part (120b) and may be smallest near the boundary between the second_2 lower part (123c_2) and the second_1 lower part (123c_1), but the width of the second direction (DR2) of the second_2 lower part (123c_2) near the boundary with the second_1 lower part (123c_1) may be larger than the width of the second direction (DR2) of the second connecting part (123b).

[0081] The separation distance (D1) between the first upper part (110a) and the second upper part (123a) and the separation distance (D3) between the first lower part (110c) and the second lower part (123c) may be smaller than the separation distance (D2) between the first connecting part (110b) and the second connecting part (123b). In some embodiments, the spacing distance (D1``` between the first upper portion (110a) of the first side wiring (110) and the second upper portion (123a) of the second side wiring (123), the spacing distance (D2```) between the first connecting portion (110b) and the second connecting portion (123b), and the spacing distance (D3```) between the first lower portion (110c) and the second lower portion (123c) may each be substantially constant along the third direction (DR3), but are not limited thereto.

[0082] With the configuration described above, the width of the first side wiring (110) and the second side wiring (123) is widened to prevent disconnection, and at the same time, the separation distance between the first side wiring (110) and the second side wiring (123) is relatively short enough so that a short circuit does not occur, thereby reducing the separation distance (D1, D2, D3) between the first side wiring (110) and the second side wiring (123) overall, and increasing the density of the side wiring placed in the edge portion (EP).

[0083] FIG. 12 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0084] Referring to FIG. 12, the display device (1_4) according to the present embodiment differs from the display device (1) according to FIG. 7 in that the width of the second direction (DR2) of each of the first upper part (114a), the first lower part (114c), the second upper part (124a), and the second lower part (124c) is substantially constant, and other configurations are substantially the same or similar. Specifically, the shape of each of the first upper part (114a), the first lower part (114c), the second upper part (124a), and the second lower part (124c) may be rectangular, but is not limited thereto.

[0085] In some embodiments, the shapes of the first side wiring (114) and the second side wiring (124) may be identical, but are not limited thereto. For convenience of explanation, the shape of the first side wiring (114) will be described below, and the description of the shape of the second side wiring (124) will be omitted.

[0086] The second direction (DR2) width (W4a) of the first upper portion (114a) of the first side wiring (114) may be wider than the second direction (DR2) width (W4b) of the first connection portion (114b). The second direction (DR2) width (W4a) of the first upper portion (114a) may be substantially constant along the third direction (DR3). In other words, at the part in contact with the first connection portion (114b), the second direction (DR2) width (W4a) of the first upper portion (114a) may be larger than the second direction (DR2) width (W4b) of the first connection portion (114b). Accordingly, since the second direction (DR2) width of the first_1 corner (DL_1a) covered by the first upper part (114a) and the second direction (DR2) width of the first_2 corner (DL_1b) are substantially the same, the wire can be prevented more stably.

[0087] The second direction (DR2) width (W4c) of the first lower portion (114c) of the first side wiring (114) may be wider than the second direction (DR2) width (W4b) of the first connection portion (114b). The second direction (DR2) width (W4c) of the first lower portion (114c) may be substantially constant along the third direction (DR3). In other words, at the part in contact with the first connection portion (114b), the second direction (DR2) width (W4c) of the first lower portion (114c) may be larger than the second direction (DR2) width (W4b) of the first connection portion (114b). Accordingly, since the width of the second direction (DR2) of the second_1 corner (DL_2a) covered by the first lower part (114c) and the width of the second direction (DR2) of the second_2 corner (DL_2b) are substantially the same, the wire can be prevented more stably.

[0088] With the configuration described above, the side wiring according to the present embodiment can more reliably prevent disconnection.

[0089] FIG. 13 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0090] The display device (1_5) according to the present embodiment differs from the display device (1_1) according to the embodiment of FIG. 9 in that the width of the second direction (DR2) of each of the first upper part (115a) of the first side wiring (115) and the second lower part (125c) of the second side wiring (125) has a substantially constant shape along the third direction (DR3) as described in the embodiment of FIG. 12, and other configurations are substantially the same or similar. Specifically, the shape of each of the first upper part (115a) and the second lower part (125c) may be rectangular, but is not limited thereto.

[0091] The display device (1_5) according to the present embodiment can more stably prevent disconnection by having a side wiring shape as described in the display device (1_4) according to the embodiment of FIG. 12.

[0092] FIG. 14 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0093] The display device (1_6) according to the present embodiment differs from the display device (1_2) according to the embodiment of FIG. 10 in that the width of the first upper part (114a) and the first lower part (114c) of the first side wiring (114) in the second direction (DR2) has a substantially constant shape along the third direction (DR3), and other configurations are substantially the same or similar. Specifically, the shape of the first side wiring (114) according to the present embodiment is substantially the same as the shape of the first side wiring (114) according to the embodiment of FIG. 12, and the shape of the second side wiring (122) according to the present embodiment may be substantially the same as the shape of the second side wiring (122) according to the embodiment of FIG. 10.

[0094] The display device (1_6) according to the present embodiment can more reliably prevent disconnection as described in the display device (1_4) according to the embodiment of FIG. 12.

[0095] FIG. 15 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0096] Referring to FIG. 15, the display device (1_7) according to the present embodiment differs from the display device (1) according to FIG. 7 in that the width of the second direction (DR2) of each of the first upper part (117a), the first lower part (117c), the second upper part (127a), and the second lower part (127c) increases and then decreases along the third direction (DR3), and other configurations are substantially the same or similar. Specifically, each of the first upper part (117a), the first lower part (117c), the second upper part (127a), and the second lower part (127c) may have a shape similar to a circle, but is not limited thereto.

[0097] In some embodiments, the shapes of the first side wiring (117) and the second side wiring (127) may be identical, but are not limited thereto. For convenience of explanation, the shape of the first side wiring (117) will be described below, and the description of the shape of the second side wiring (127) will be omitted.

[0098] The width of the second direction (DR2) of the first upper part (117a) of the first side wiring (117) may be greater than the width of the second direction (DR2) of the first connection part (117b). In other words, the width of the second direction (DR2) of the first upper part (117a) may have a minimum value at the boundary with the first connection part (117b) and may gradually increase toward one side of the third direction (DR3). In some embodiments, as the maximum width in the second direction (DR2) of the first_2 upper portion (117a_2) of the first side wiring (117), the width in the second direction (DR2) (W7a) of the first_2 upper portion (117a_2) covering the first_1 corner (DL_1a) is greater than the width in the second direction (DR2) (W7b) of the first connection portion (110b), and as the minimum width in the second direction (DR2) of the first_2 upper portion (117a_2), the width in the second direction (DR2) of the portion in contact with the first connection portion (117b) may be substantially the same as the width in the second direction (DR2) (W7b) of the first connection portion (117b), but is not limited thereto.

[0099] Meanwhile, the width of the second direction (DR2) of the first upper part (117a_1) may be smaller than the width of the second direction (DR2) of the first connecting part (117b) depending on the location. In other words, the width of the second direction (DR2) of the first upper part (117a_1) may gradually decrease as it moves toward one side of the third direction (DR3). Accordingly, the second direction (DR2) width (W7a) of the first_1 corner (DL_1a) covered by the first_2 upper part (117a_2) and the second direction (DR2) width of the first_2 corner (DL_1b) are larger than the second direction (DR2) width (W7b) of the first connecting part (117b), thereby preventing the first side wiring (117) from being disconnected, and at the same time, the second direction (DR2) width of the first_1 upper part (117a_1), which has a relatively lower risk of disconnection, can be reduced to reduce the amount of material required to form the first side wiring (117).

[0100] The width of the second direction (DR2) of the first lower part (117c) of the first side wiring (117) may be greater than the width of the second direction (DR2) of the first connection part (117b). In other words, the width of the second direction (DR2) of the first lower part (117c) may have a minimum value at the boundary with the first connection part (117b) and may gradually increase toward the other side of the third direction (DR3). In some embodiments, as the maximum width of the second direction (DR2) of the first_2 lower portion (117c_2) of the first side wiring (117), the second direction (DR2) width (W7c) of the first_2 lower portion (117c_2) covering the second_1 corner (DL_2a) is greater than the second direction (DR2) width (W7b) of the first connection portion (110b), and as the minimum width of the second direction (DR2) of the first_2 lower portion (117c_2), the second direction (DR2) width of the portion in contact with the first connection portion (117b) may be substantially the same as the second direction (DR2) width (W7b) of the first connection portion (117b), but is not limited thereto.

[0101] Meanwhile, the width of the second direction (DR2) of the first_1 lower part (117c_1) may be smaller than the width of the second direction (DR2) of the first connecting part (117b) depending on the location. In other words, the width of the second direction (DR2) of the first_1 lower part (117c_1) may gradually decrease as it moves toward the other side of the third direction (DR3). Accordingly, the second direction (DR2) width (W7c) of the second_1 corner (DL_2a) covered by the first_2 lower part (117c_2) and the second direction (DR2) width of the second_2 corner (DL_2b) are larger than the second direction (DR2) width (W7b) of the first connecting part (117b), thereby preventing the first side wiring (117) from being disconnected, and at the same time, the second direction (DR2) width of the first_1 lower part (117c_1), which has a relatively lower risk of disconnection, can be reduced to reduce the amount of material required to form the first side wiring (117).

[0102] With the configuration described above, the side wiring of the display device (1_7) according to the present embodiment can prevent disconnection and at the same time reduce the amount of material required to form the side wiring.

[0103] FIG. 16 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0104] The display device (1_8) according to the present embodiment differs from the display device (1) according to the embodiment of FIG. 9 in that the width of the second direction (DR2) of each of the first upper part (118a) of the first side wiring (118) and the second lower part (128c) of the second side wiring (128) increases and then decreases along the third direction (DR3), and other configurations are substantially the same or similar. Specifically, the first upper part (118a) according to the present embodiment has substantially the same shape as the first upper part (117a) according to the embodiment of FIG. 15, and the second lower part (118c) according to the present embodiment may have substantially the same shape as the first lower part (117c) according to the embodiment of FIG. 15.

[0105] The display device (1_8) according to the present embodiment has a side wiring shape as described in the display device (1_7) according to the embodiment of FIG. 15, which prevents disconnection and can reduce the amount of material required to form the side wiring.

[0106] FIG. 17 is an unfolded view schematically illustrating the first and second surfaces of the substrate body portion of a display device according to another embodiment.

[0107] The display device (1_9) according to the present embodiment differs from the display device (1_2) according to the embodiment of FIG. 10 in that the width of the first upper part (117a) and the first lower part (117c) of the first side wiring (117) in the second direction (DR2) increases and then decreases along the third direction (DR3), and other configurations are substantially the same or similar. Specifically, the first side wiring (117) according to the present embodiment has substantially the same shape as the first side wiring (117) according to the embodiment of FIG. 15, and the second side wiring (122) according to the present embodiment may have substantially the same shape as the second side wiring (122) according to the embodiment of FIG. 10.

[0108] The display device (1_9) according to the present embodiment can prevent disconnection and reduce the amount of material required to form side wiring, as described in the display device (1_7) according to the embodiment of FIG. 15.

[0109] FIG. 18 is a perspective view schematically illustrating the shape of a side wiring arranged on the edge portion of a substrate of a display device according to another embodiment. FIG. 19 is a cross-sectional view schematically illustrating a cross section cut along the line X2-X2' of FIG. 18. FIG. 20 is a plan view schematically illustrating the first and second surfaces of a substrate body portion according to the embodiment of FIG. 18.

[0110] Referring to FIGS. 18 to 20, it is illustrated that the edge portion (EP10) of the substrate (SUB10) of the display device (1_10) according to the present embodiment may not be chamfered. Specifically, the edge portion (EP10) according to the present embodiment has a structure in which the first chamfered surface (EP_4a) and the second chamfered surface (EP_4b) of the edge portion (EP) of FIG. 7 are omitted, and the shape of the substrate (SUB10) may be a rectangular parallelepiped. Accordingly, the manufacturing of the substrate (SUB10) can be made relatively easy.

[0111] According to the present embodiment, the upper surface of the substrate (SUB10) is defined as the first surface (MP_1) of the main body part (MP) and the first flat surface (EP10_1) of the edge part (EP10), the lower surface is defined as the second surface (MP_2) of the main body part (MP) and the third flat surface (EP10_3) of the edge part (EP10), and the side surface can be defined as the second flat surface (EP10_2) of the edge part (EP10).

[0112] In some embodiments, the shape of the first side wiring (1110) and the shape of the second side wiring (1210) may be substantially the same, but are not limited thereto. In this case, the first upper portion (1110a) of the first side wiring (1110) may correspond to the second upper portion (1210a) of the second side wiring (1210), the first connecting portion (1110b) may correspond to the second connecting portion (1210b), and the first lower portion (1110c) may correspond to the second lower portion (1210c). For convenience of explanation, the following description will focus on the fact that the shape of the first side wiring (1110) and the shape of the second side wiring (1210) are identical, and a detailed description of the shape of the second side wiring (1210) will be omitted.

[0113] In accordance with the present embodiment, the first_2 upper portion (1110a_2) of the first upper portion (1110a) of the first side wiring (1110) covers the first corner (DL10_1) formed as the boundary between the first flat surface (EP10_1) and the second flat surface (EP10_2), and the first_1 lower portion (1110c_1) of the first lower portion (1110c) can cover the second corner (DL10_2) formed as the boundary between the second flat surface (EP10_2) and the third flat surface (EP10_3). Specifically, the first_2 upper portion (1110a_2) can cover a part of the first flat surface (EP10_1) and a part of the second flat surface (EP10_2), and the first_2 lower portion (1110c_2) can cover a part of the second flat surface (EP10_2) and a part of the third flat surface (EP10_3).

[0114] With the configuration described above, the display device (1_10) according to the present embodiment can facilitate the manufacturing of the substrate while preventing the disconnection of the side wiring.

[0115] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0116] SUB: Substrate MP: Main body EP: Edge 100: Side wiring 110: 1st side wiring 120: Second side wiring 110a: First upper part 110b: First connection 110c: 1st lower part 120a: Second upper part 120b: Second connection 120c: Second lower part

Claims

Claim 1 A display device comprising: a substrate including a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface; and a first side wiring disposed on the side surface of the substrate and extending in a first direction toward the second surface from the first surface, wherein the first side wiring comprises a first upper portion adjacent to the first surface, a first lower portion adjacent to the second surface, and a first connecting portion disposed between the first upper portion and the first lower portion, wherein at least one of the first upper portion and the first lower portion has a width greater than that of the first connecting portion and covers the side surface of the substrate when viewed from a point perpendicular to the side surface of the substrate and parallel to the first surface. Claim 2 A display device according to claim 1, wherein the width of the first upper portion and the width of the first lower portion are larger than the width of the first connecting portion. Claim 3 A display device according to paragraph 2, wherein the first upper portion covers the boundary between the first surface and the side surface of the substrate, and the first lower portion covers the boundary between the second surface and the side surface of the substrate. Claim 4 A display device according to claim 3, further comprising a second side wiring that extends in the first direction and is spaced apart from the first side wiring in a second direction intersecting the first direction, wherein the second side wiring comprises a second upper portion adjacent to the first surface, a second lower portion adjacent to the second surface, and a second connecting portion disposed between the second upper portion and the second lower portion, wherein the width of the second upper portion and the width of the second lower portion are greater than the width of the second connecting portion, and the first side wiring and the second side wiring are repeatedly arranged. Claim 5 A display device according to claim 4, wherein the second upper portion covers the boundary between the first surface and the side surface of the substrate, and the second lower portion covers the boundary between the second surface and the side surface of the substrate. Claim 6 A display device according to claim 5, wherein the width of the first upper portion of the first side wiring gradually widens in the direction toward the first surface, and at the portion in contact with the first connection part, the width of the first upper portion is substantially the same as the width of the first connection part, and the width of the second upper portion of the second side wiring gradually widens in the direction toward the first surface, and at the portion in contact with the second connection part, the width of the second upper portion is substantially the same as the width of the second connection part. Claim 7 A display device according to claim 5, wherein the width of the first upper portion at the part contacting the first connecting portion is greater than the width of the first connecting portion, and the width of the second upper portion at the part contacting the second connecting portion is greater than the width of the second connecting portion. Claim 8 A display device according to claim 5, wherein the width of the first upper portion of the first side wiring gradually widens in the direction toward the first surface, and the width of the second upper portion of the second side wiring gradually narrows in the direction toward the first surface. Claim 9 A display device according to claim 5, further comprising a plurality of pixels disposed on the first surface of the substrate and a driving unit disposed on the second surface of the substrate, wherein the first side wiring and the second side wiring electrically connect the plurality of pixels and the driving unit. Claim 10 A display device according to claim 1, wherein the first upper portion of the first side wiring has a width greater than that of the first lower portion and the first connecting portion. Claim 11 A display device according to claim 10, further comprising a second side wiring that extends in the first direction and is spaced apart from the first side wiring in a second direction intersecting the first direction, wherein the second side wiring comprises a second upper portion adjacent to the first surface, a second lower portion adjacent to the second surface, and a second connecting portion disposed between the second upper portion and the second lower portion, wherein the second lower portion has a greater width than the second upper portion and the second connecting portion, and the first side wiring and the second side wiring are repeatedly arranged. Claim 12 A display device according to claim 11, wherein the first connecting portion and the first lower portion have substantially the same width, and the second connecting portion and the second upper portion have substantially the same width. Claim 13 A display device according to claim 1, further comprising a second side wiring that extends in the first direction and is spaced apart from the first side wiring in a second direction intersecting the first direction, wherein the second side wiring has a substantially constant width along the first direction and the first side wiring and the second side wiring are repeatedly arranged. Claim 14 A substrate comprising a main body portion including a first surface and a second surface opposite to the first surface, and an edge portion disposed on one side of the main body portion and connecting the first surface and the second surface of the main body portion; and a plurality of side wirings disposed on the edge portion and spaced apart from each other, wherein the edge portion comprises a first flat surface in contact with the first surface and parallel to the first surface, a first chamfered surface inclined toward the interior of the substrate with respect to the first flat surface and in contact with the first flat surface, and a second flat surface inclined toward the interior of the substrate with respect to the first chamfered surface and in contact with the first chamfered surface, and each of the plurality of side wirings comprises an upper portion adjacent to the first surface, a lower portion adjacent to the second surface, and a connecting portion connecting the upper portion and the lower portion and having a width smaller than that of the upper portion, wherein the upper portion covers the first flat surface, the first chamfered surface, and the second flat surface, and the first chamfered surface among the upper portions A display device comprising a covering portion having a width greater than that of the connecting portion when viewed from a point perpendicular to the second flat surface of the substrate and parallel to the first surface. Claim 15 In claim 14, the first flat surface and the first chamfered surface of the edge portion are in contact with each other and have a first_1 edge as a boundary between the first flat surface and the first chamfered surface, and the first chamfered surface and the second flat surface are in contact with each other and have a first_2 edge as a boundary between the first chamfered surface and the second flat surface, wherein the upper portion is a display device covering the first_1 edge and the first_2 edge. Claim 16 In claim 15, the edge portion further comprises a third flat surface that is in contact with the second surface and parallel to the second surface, and a second chamfered surface that is inclined toward the interior of the substrate with respect to the third flat surface and in contact with the third flat surface and the second flat surface, wherein the lower portion has a width greater than that of the connecting portion and is a display device covering the second flat surface, the second chamfered surface and the third flat surface. Claim 17 A display device according to claim 16, further comprising a plurality of pixels disposed on the first surface, a driving unit disposed on the second surface, and a plurality of pads disposed on the first flat surface and the third flat surface, wherein the plurality of pads electrically connect the plurality of pixels and the plurality of side wirings on the first flat surface, and electrically connect the plurality of side wirings and the driving unit on the third flat surface. Claim 18 A substrate comprising a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface; and a first side wiring and a second side wiring disposed on the side surface of the substrate, extending in a first direction toward the second surface from the first surface and spaced apart from each other in a second direction intersecting the first direction, wherein the first side wiring includes a first upper portion adjacent to the first surface, a first lower portion adjacent to the second surface, and a first connecting portion disposed between the first upper portion and the first lower portion, and the second side wiring includes a second upper portion adjacent to the first surface, a second lower portion adjacent to the second surface, and a second connecting portion disposed between the second upper portion and the second lower portion, wherein the distance between the first upper portion and the second upper portion is smaller than the distance between the first connecting portion and the second connecting portion. Claim 19 A display device according to claim 18, wherein the distance between the first lower part and the second lower part is smaller than the distance between the first connecting part and the second connecting part. Claim 20 A display device according to claim 18, wherein the width of the first upper portion gradually narrows in the direction toward the first connecting portion, the width of the second upper portion gradually widens in the direction toward the second connecting portion, and the distance between the first upper portion and the second upper portion is substantially constant along the first direction.

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