Display device

Abstract

To provide a display device.SOLUTION: A display device including a display area, and a non-display area outside the display area includes first island sections that are disposed in the display area and are mutually separated along a row direction and a column direction, a first bridge section for connecting the first adjacent island sections from among the first island sections, second island sections that are disposed in the non-display area and are separately mutually, and a second bridge section for connecting the second adjacent island sections from among the second island sections. A first width in each of the first island sections is narrower than a second width in each of the second island sections, and one second island section from among the second island sections corresponds to the first island section arranged in the i-th row and the first island section arranged in the (i+1)-th row (in this case, i is a positive integer).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to displays, for example flexible displays. [Background technology]

[0002] As display devices that visually display electrical signals have been developed, various display devices with excellent characteristics such as thinness, light weight, and low power consumption have been introduced. For example, flexible display devices that can be folded or rolled up have been introduced. Recently, research and development into display devices with various structures, such as stretchable display devices that can be changed into various shapes, has been actively conducted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Korean Patent Publication No. 10-2021-0043262 (KR2021-0043262A) [Patent Document 2] China Patent Application Publication No. 115035805 (CN115035805A) [Patent Document 3] Chinese Patent Application Publication No. 112396961 (CN112396961A) Summary of the Invention [Problem to be solved by the invention]

[0004] The problem that the present invention seeks to solve is to provide a display device, for example a flexible display device. [Means for solving the problem]

[0005] One embodiment of the present invention discloses a display device including a display area and a non-display area outside the display area, the display device including first island portions arranged in the display area and spaced apart from each other along the row and column directions, first bridge portions connecting adjacent first island portions among the first island portions, second island portions arranged in the non-display area and spaced apart from each other, and second bridge portions connecting adjacent second island portions among the second island portions, wherein a first width of each of the first island portions is narrower than a second width of each of the second island portions, and any one of the second island portions corresponds to a first island portion arranged in the i-th row and a first island portion arranged in the (i+1)-th row (where i is a positive integer).

[0006] One embodiment of the present invention discloses a display device including a display area and a non-display area outside the display area, and including first island portions arranged in the display area and spaced apart from each other along row and column directions, first bridge portions connecting adjacent first island portions among the first island portions, second island portions arranged in the non-display area and spaced apart from each other, and second bridge portions connecting adjacent second island portions among the second island portions, wherein the shape of each of the second bridge portions is different from the shape of each of the first bridge portions.

[0007] Any one of the second island portions may be connected to any one of the first island portions arranged in the i-th row and any one of the first island portions arranged in the (i+1)th row via a connecting bridge portion.

[0008] The non-display region may have a lower stretch ratio than the display region. The non-display region may include a first sub-non-display region in which the second island portion and the second bridge portion are arranged, and a second sub-non-display region located between the first sub-non-display region and the display region and in which the connecting bridge portion is arranged. The first sub-non-display region and the second sub-non-display region may have a different stretch ratio from each other.

[0009] The stretch ratio of the second non-display sub-region may be lower than the stretch ratio of the first non-display sub-region and the stretch ratio of the display region.

[0010] The stretch ratio of the second non-display sub-region may be higher than that of the first non-display sub-region and lower than that of the display region.

[0011] Each of the first bridge portions may be disposed between two adjacent first island portions, and each of the second bridge portions may be disposed between two adjacent second island portions, and a first distance between the two adjacent first island portions may be shorter than a second distance between the two adjacent second island portions.

[0012] A ratio of the first distance to the first width in the first island portion may be greater than a ratio of the second distance to the second width in the second island portion.

[0013] A width of each of the first bridge portions may be narrower than a width of each of the second bridge portions.

[0014] The first bridge portion and the second bridge portion may each have a serpentine shape.

[0015] Each of the first bridge portions may include two first round portions and a straight portion between the two first round portions.

[0016] The straight portion of each of the first bridge portions may be disposed obliquely with respect to one side of the first island portion adjacent to the first bridge portion with the straight portion interposed therebetween.

[0017] Each of the two first round portions may be an arc having a first central angle, and the first central angle may be a reflex angle.

[0018] Each of the first bridge portions may further include two second round portions connected to each of the two first round portions.

[0019] Each of the two second round portions may be an arc having a second central angle, and the second central angle may be smaller than the first central angle.

[0020] The two first round portions of each of the first bridge portions each include an inner edge and an outer edge, and the inner edges may be contoured.

[0021] Each of the second bridge portions may have a different shape than each of the first bridge portions.

[0022] Each of the second bridge sections may include two first round sections, a first straight section between the two first round sections, two second straight sections respectively connected to the two first round sections, and two second round sections respectively connected to the two second straight sections.

[0023] A length of the first straight portion in each of the second bridge portions may be greater than a length of the second straight portion.

[0024] Each of the two first round portions in each of the second bridge portions may be arc-shaped having a first central angle, and each of the two second round portions in each of the second bridge portions may be arc-shaped having a second central angle, the first central angle being greater than the second central angle.

[0025] Each of the first islands may include an inorganic insulating layer including an inorganic insulator, and an edge of the inorganic insulating layer may be spaced apart from an edge of the respective first island.

[0026] The substrate may further include a substrate below the inorganic insulating layer, the substrate including a base layer including a polymer resin and a barrier layer disposed on the base layer and including an inorganic insulator, and an edge of the barrier layer may be spaced apart from an edge of each of the first island portions.

[0027] The inorganic insulating layer and the barrier layer of the substrate may have a step.

[0028] The insulating film may further include an organic layer covering an edge of the barrier layer and an edge of the inorganic insulating layer and overlapping the step.

[0029] Each of the first island portions includes a transistor and a light emitting diode electrically connected to the transistor, and a portion of a wiring electrically connected to the transistor in any one of the first island portions is disposed on a first bridge portion connected to any one of the first island portions, and a first separation distance from an inner edge of the first bridge portion to the wiring may be longer than a second separation distance from an outer edge of the first bridge portion to the wiring. Effect of the Invention

[0030] According to an embodiment of the present invention, it is possible to provide a display device that can be stretched and contracted in various directions while preventing damage caused by concentrated stress. According to an embodiment of the present invention, it is possible to stably maintain electrical connection between elements constituting the display device.

[0031] Such effects are merely exemplary, and the above-described effects are not intended to limit the scope of the present invention. [Brief description of the drawings]

[0032] [Figure 1] 1 is a schematic perspective view of a display device according to an embodiment of the present invention; [Figure 2A] 2 is a perspective view showing a state in which the display device of FIG. 1 is stretched (expanded and deformed) in a first direction. FIG. [Figure 2B] 2 is a perspective view showing a state in which the display device of FIG. 1 is stretched in a first direction. FIG. [Figure 2C] 2 is a perspective view showing a state in which the display device of FIG. 1 is stretched in a second direction. FIG. [Figure 2D] 2 is a perspective view showing a state in which the display device of FIG. 1 is stretched in a first direction and a second direction. FIG. [Figure 2E] 2 is a perspective view showing a state in which the display device of FIG. 1 is stretched in a third direction. FIG. [Diagram 3] 1 is a plan view illustrating a display device according to an embodiment of the present invention; [Figure 4A] 4 is a plan view showing a part of a display device according to an embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged. [Figure 4B] 4 is a plan view showing a part of a display device according to an embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged. [Figure 4C] 4 is a plan view showing a part of a display device according to an embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged. [Diagram 5] 2 is a cross-sectional view illustrating a first island portion and a first bridge portion arranged in a display region of a display device according to an embodiment of the present invention. [Figure 6A] 2 is an equivalent circuit diagram of a sub-pixel of a display device according to an embodiment of the present invention; [Figure 6B] 2 is an equivalent circuit diagram of a sub-pixel of a display device according to an embodiment of the present invention; [Figure 6C] 2 is an equivalent circuit diagram of a sub-pixel of a display device according to an embodiment of the present invention; [Figure 7A] 2 is a cross-sectional view illustrating a schematic configuration of a light-emitting element of a display device according to an embodiment of the present invention; [Figure 7B] 2 is a cross-sectional view illustrating a schematic configuration of a light-emitting element of a display device according to an embodiment of the present invention; [Figure 8] 1 is a plan view illustrating a schematic view of a portion of a display device according to an embodiment of the present invention; [Figure 9] 9 is a plan view showing an excerpt of one of the first bridge portions included in the display area of ​​FIG. 8 and its periphery. [Figure 10] 9 is a plan view showing an excerpt of a part arranged in the display region of FIG. 8. FIG. [Figure 11] 9 is a plan view showing an excerpt of a second bridge portion arranged in a non-display area of ​​FIG. 8. FIG. [Figure 12] 1 is a plan view showing an excerpt of a display area of ​​a display device according to an embodiment of the present invention; [Figure 13A] 1 is a plan view showing an excerpt of a display area of ​​a display device according to an embodiment of the present invention; [Figure 13B] 4 is a plan view illustrating a first round portion of a first bridge part of a display device according to an embodiment of the present invention; FIG. [Figure 14] 2 is an enlarged plan view of a first island portion of a display device according to an embodiment of the present invention; FIG. [Figure 15] 15 is a cross-sectional view taken along line XV-XV' in FIG. 14. [Figure 16A] FIG. 1 is a plan view (1) showing the layout of wiring on a first bridge portion of a display device according to an embodiment of the present invention. [Figure 16B] FIG. 2 is a plan view (2) showing the layout of wiring on a first bridge portion of the display device according to one embodiment of the present invention. [Figure 17A] FIG. 1 is a perspective view (1) that shows a schematic diagram of an embodiment of an electronic device including a display device according to an embodiment of the present invention. [Figure 17B] FIG. 2 is a perspective view (2) that shows a schematic diagram of an embodiment of an electronic device including a display device according to an embodiment of the present invention. [Figure 17C] FIG. 3 is a perspective view (3) showing a schematic configuration of an electronic device including a display device according to an embodiment of the present invention. [Figure 17D] FIG. 4 is a perspective view (4) showing a schematic configuration of an electronic device including a display device according to an embodiment of the present invention. [Figure 17E] FIG. 5 is a perspective view (5) that shows a schematic diagram of an embodiment of an electronic device including a display device according to an embodiment of the present invention. [Figure 17F] FIG. 6 is a perspective view (6) that shows a schematic diagram of an embodiment of an electronic device including a display device according to an embodiment of the present invention. [Figure 17G] FIG. 7 is a perspective view (7) showing a schematic diagram of an embodiment of an electronic device including a display device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] The present invention can be modified in various ways and can have various embodiments, but specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. The advantages, features, and methods of achieving the present invention will become clear with reference to the embodiments described in detail below together with the drawings. However, the present invention is not limited to the embodiments described below, but can be embodied in various forms.

[0034] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. When describing the embodiment with reference to the drawings, the same or corresponding components are designated by the same reference numerals, and duplicate descriptions thereof will be omitted.

[0035] In the following embodiments, the terms "first" and "second" are not used in a limiting sense but are used to distinguish one component from another component.

[0036] In the following embodiments, the singular expression includes the plural expression unless the context clearly indicates otherwise.

[0037] In the following embodiments, the terms "comprise" or "have" mean the presence of features or components described in the specification, without precluding the possibility that one or more other features or components may be added.

[0038] In the following embodiments, when a part such as a film, region, or component is said to be "on," "above," or "above" another part, this does not only mean that it is directly on top of the other part, but also means that there is another film, region, component, etc. in between.

[0039] In the drawings, the size of components may be exaggerated or reduced for the convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of explanation, and the present invention is not necessarily limited to what is shown in the drawings.

[0040] If an embodiment can be implemented differently, the order of certain steps may be performed differently than described, for example, two steps described in succession may be performed substantially simultaneously or may be performed in the reverse order from that described.

[0041] In this specification, "A and / or B" refers to the case where A is present, B is present, or A and B is present. And, "at least one of A or B" refers to the case where A is present, B is present, or A and B is present.

[0042] In the following embodiments, when a membrane, region, component, etc. is said to be connected, this includes the case where the membrane, region, component, etc. are directly connected, and / or the case where the membrane, region, component, etc. are indirectly connected with another membrane, region, component, etc. being interposed between them. For example, in this specification, when a membrane, region, component, etc. is said to be electrically connected, this refers to the case where the membrane, region, component, etc. are directly electrically connected, and / or the case where the membrane, region, component, etc. are indirectly electrically connected with another membrane, region, component, etc. being interposed between them.

[0043] The x-axis, y-axis, and z-axis are not limited to the three axes on a Cartesian coordinate system, but may be interpreted in a broader sense including the three axes. For example, the x-axis, y-axis, and z-axis may be mutually orthogonal, but may not be mutually orthogonal and may represent mutually different directions.

[0044] FIG 1 is a perspective view showing a schematic configuration of a display device 1 according to an embodiment of the present invention. FIGS. 2A and 2B are perspective views showing a state in which the display device 1 of FIG 1 is stretched in a first direction. FIG 2C is a perspective view showing a state in which the display device 1 of FIG 1 is stretched in a second direction. FIG 2D is a perspective view showing a state in which the display device 1 of FIG 1 is stretched in the first and second directions. FIG 2E is a perspective view showing a state in which the display device 1 of FIG 1 is stretched in a third direction.

[0045] Referring to FIG. 1 , the display device 1 may include a display area DA and a non-display area NDA. The display area DA may include a plurality of pixels. The display device 1 may provide a predetermined image using light emitted from the plurality of pixels. The non-display area NDA may be disposed outside the display area DA. The non-display area NDA is an area where no pixels are disposed, and may entirely surround the display area DA.

[0046] The display device 1 may expand and contract in various directions. The display device 1 may be stretched in a first direction (e.g., x direction and / or -x direction) by an external force applied by an external object or a user. In one embodiment, as illustrated in Figs. 2A and 2B, the display area DA and / or the non-display area NDA of the display device 1 may be stretched in a first direction (e.g., x direction and / or -x direction). For example, as illustrated in Fig. 2A, the display device 1 may be stretched along the x direction and -x direction, or, as illustrated in Fig. 2B, the display device 1 may be stretched along the x direction while one side of the display device 1 is fixed.

[0047] The display device 1 may be stretched in a second direction (e.g., y direction and / or -y direction) by an external force applied by an external object or a user. In one embodiment, the display area DA and / or the non-display area NDA of the display device 1 may be stretched in the y direction and -y direction as shown in Fig. 2C. In another embodiment, the display device 1 may be stretched in the y direction or -y direction while one side of the display device 1 remains fixed.

[0048] The display device 1 can be stretched in multiple directions, for example, in a first direction (e.g., x-direction and / or -x-direction) and a second direction (e.g., y-direction and / or -y-direction) by an external force applied by an external object or a part of the user's body. As shown in Fig. 2D, the display area DA and / or the non-display area NDA of the display device 1 can be stretched in ±x directions and ±y directions.

[0049] The display device 1 may be stretched in a third direction (e.g., z-direction or -z-direction) by an external force applied by an external object or a part of the user's body. In one embodiment, FIG. 2E illustrates a portion of the display device 1, e.g., a portion of the display area DA, protruding in the z-direction. In another embodiment, a portion of the display device 1, e.g., a portion of the display area DA, may protrude along the -z direction (or be recessed along the z direction).

[0050] 2A-2E illustrate the display device 1 extending in a first direction, a second direction, and / or a third direction, the present invention is not so limited, and in other embodiments, the display device 1 may be deformed in various ways into irregular shapes, such as having more than one axis and being bent or twisted.

[0051] FIG. 3 is a plan view that illustrates a display device 1 according to an embodiment of the present invention.

[0052] A plurality of pixels may be arranged in the display area DA of the display device 1. Each pixel may include sub-pixels that emit light of different colors. Light emitting elements corresponding to each sub-pixel may be arranged in the display area DA. The light emitting elements arranged in the display area DA and a circuit for providing an electrical signal to a transistor electrically connected to the light emitting element may be arranged in a non-display area NDA around the display area DA. The gate driving circuit GDC may be arranged in a first non-display area NDA1 and a second non-display area NDA2 arranged on both sides of the display area DA. The gate driving circuit GDC may include a driver for providing an electrical signal to each gate electrode of the transistor electrically connected to the light emitting element. FIG. 3 illustrates the gate driving circuit GDC arranged in each of the first non-display area NDA1 and the second non-display area NDA2, but the present invention is not limited thereto. In another embodiment, the gate driving circuit GDC may be arranged in either one of the first non-display area NDA1 and the second non-display area NDA2.

[0053] The data driving circuit DDC may be disposed in a third non-display area NDA3 and / or a fourth non-display area NDA4 connecting the first non-display area NDA1 and the second non-display area NDA2. In one embodiment, FIG. 3 illustrates the data driving circuit DDC disposed in the fourth non-display area NDA4. In another embodiment, the data driving circuit DDC may be disposed in each of the third non-display area NDA3 and the fourth non-display area NDA4.

[0054] 3 illustrates the data driving circuit DDC disposed in the fourth non-display area NDA4 of the display device 1, but the present invention is not limited thereto. In another embodiment, the display device 1 may further include a flexible circuit board (not shown) electrically connected via a terminal part (not shown) disposed in the fourth non-display area NDA4, and the data driving circuit DDC may be disposed on the flexible circuit board.

[0055] In some embodiments, the elongation of the non-display area NDA may be equal to or smaller than the elongation of the display area DA. In one embodiment, the elongation of the non-display area NDA may be different from each other in each region. For example, the first non-display area NDA1, the second non-display area NDA2, and the third non-display area NDA3 may have substantially the same elongation, but the elongation of the fourth non-display area NDA4 may be smaller than the elongation of the first non-display area NDA1, the second non-display area NDA2, and the third non-display area NDA3. "Elongation" may represent a change in length (ΔL / L) of the display device 1 due to an external force without causing physical damage to the display device 1 (elongation=ΔL / L). Here, ΔL represents the change in length of the display device 1, and L represents the initial length of the display device 1.

[0056] FIG. 4A is a plan view showing a part of the display device 1 according to one embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged.

[0057] Referring to FIG. 4A, the display device 1 may include first island portions 11 spaced apart from each other along a first direction (e.g., x direction or -x direction) and a second direction (e.g., y direction or -y direction) in a display area DA, and first bridge portions 12 connecting adjacent first island portions 11.

[0058] Each first island portion 11 may be connected to a plurality of first bridge portions 12. For example, each first island portion 11 may be connected to four first bridge portions 12. Two first bridge portions 12 may be disposed on both sides of the first island portion 11 along a first direction (e.g., x direction or −x direction), and the remaining two first bridge portions 12 may be disposed on both sides of the first island portion 11 along a second direction (e.g., y direction or −y direction). In one embodiment, the four first bridge portions 12 may be connected to four sides of the first island portion 11, respectively. The four first bridge portions 12 may be adjacent to respective corners of the first island portion 11, respectively.

[0059] The first bridge portions 12 may be spaced apart from one another by first openings CS1 located between the first bridge portions 12. In one embodiment, substantially H-shaped first openings CS1 and substantially I-shaped first openings CS1 obtained by rotating the H-shape by 90° may be alternately and repeatedly arranged along a first direction (e.g., x-direction or -x-direction) and a second direction (e.g., y-direction or -y-direction), respectively. Both ends of each first bridge portion 12 are connected to the adjacent first island portions 11, respectively, and one side of each first bridge portion 12 may be spaced apart from one side of the adjacent first island portion 11 and / or one side of another first bridge portion 12 by the first openings CS1.

[0060] The display device 1 may include, in a non-display area, for example, the first non-display area NDA1 shown in FIG. 4A, second island portions 21 spaced apart from each other and second bridge portions 22 connecting adjacent second island portions 21.

[0061] Each of the second islands 21 may extend along a first direction (e.g., x direction or −x direction). The second islands 21 may be spaced apart from each other along a second direction (e.g., y direction or −y direction) intersecting the first direction (e.g., x direction or −x direction). Each of the second islands 21 may include a driver of the gate driving circuit GDC (FIG. 3) described with reference to FIG. 3.

[0062] The second bridge portion 22 may have a serpentine shape. The length of the second bridge portion 22 may be longer than the maximum distance between adjacent second island portions 21 along the second direction (e.g., y direction or -y direction). In one embodiment, the second bridge portion 22 may have an approximate omega (Ω) shape that is convex toward the first direction (e.g., x direction or -x direction). The second bridge portions 22 may be disposed between adjacent second island portions 21 but spaced apart from each other.

[0063] The second bridge portions 22 between adjacent second island portions 21 may be separated from each other by second openings CS2. Between adjacent second island portions 21, the second openings CS2 and the second bridge portions 22 may be alternately arranged along a first direction (e.g., the x direction or the −x direction). The second openings CS2 may have the same shape as each other. Both ends of each second bridge portion 22 are connected to the adjacent second island portions 21, but one side of each second bridge portion 22 may be separated from a side of the adjacent second island portion 21 and / or one side of another second bridge portion 22 by the second openings CS2.

[0064] Any one of the second islands 21 arranged in the first non-display area NDA1 may correspond to a plurality of rows of the first islands 11 arranged in the display area DA. For example, any one of the second islands 21 arranged in the first non-display area NDA1 may correspond to the first island 11 arranged in the i-th row and the first island 11 arranged in the (i+1)-th row in the display area DA (where i is a positive number greater than 0). Although FIG. 4A illustrates one second island 21 corresponding to two rows of the first islands 11, the present invention is not limited thereto. In another embodiment, any one of the second islands 21 arranged in the first non-display area NDA1 may correspond to n rows of the first islands 11 arranged in the display area DA (where n is a positive number greater than 3).

[0065] The non-display area, for example, the first non-display area NDA1, may include a first sub-non-display area SNDA1 in which the second island portion 21 and the second bridge portion 22 are arranged, and a second sub-non-display area SNDA2 between the first sub-non-display area SNDA1 and the display area DA. A third bridge portion 23 for connecting the display area DA to the first sub-non-display area SNDA1 may be arranged in the second sub-non-display area SNDA2. One end of the third bridge portion 23 may be connected to the second island portion 21 and / or the second bridge portion 22, and the other end of the third bridge portion 23 may be connected to the first island portion 11 and / or the first bridge portion 12.

[0066] The third bridge portion 23 may have a meandering shape. In one embodiment, the shape of the third bridge portion 23 may be different from the shapes of the first bridge portion 12 and the second bridge portion 22. In one embodiment, as illustrated in FIG. 4A, the third bridge portion 23 may have a shape that is approximately an omega (Ω) shape that is convex toward the second direction (e.g., the y direction or the −y direction). The adjacent third bridge portions 23 arranged along the second direction (e.g., the y direction or the −y direction) may have a structure that is symmetrical with each other such that one of the adjacent third bridge portions 23 is convex in the y direction and the other is convex in the −y direction. A structure in which the third opening CS3 and the fourth opening CS4 having different shapes are repeated between the adjacent third bridge portions 23 may be formed. The width of the third bridge portion 23 may be different from the width of the first bridge portion 12 and the width of the second bridge portion 22. In one embodiment, the width of the third bridge portion 23 is wider than the width of the first bridge portion 12 and narrower than the width of the second bridge portion 22.

[0067] 4A shows that the second island portion 21 and the second bridge portion 22 of the non-display area, for example the first non-display area NDA1, have different shapes from the first island portion 11 and the first bridge portion 12 of the display area DA, respectively. In another embodiment of the present invention, the second island portion 21 and the second bridge portion 22 of the non-display area may have the same shapes as the first island portion 11 and the first bridge portion 12 of the display area DA, respectively.

[0068] FIG. 4B is a plan view showing a part of the display device 1 according to an embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged.

[0069] 4B, the display device 1 includes, in a display area DA, first island portions 11 spaced apart from each other and first bridge portions 12 spaced apart from each other by first openings CS1 but connecting adjacent first island portions 11. The structure of the display area DA in FIG. 4B may be the same as the structure of the display area DA described above with reference to FIG. 4A.

[0070] The display device 1 may include a non-display area, for example, a second island portion 21 and a second bridge portion 22 disposed in a first non-display area NDA1. In one embodiment, the second island portion 21 and the second bridge portion 22 may have substantially the same shape as the first island portion 11 and the first bridge portion 12, respectively.

[0071] The second islands 21 may be spaced apart from each other in a first direction (e.g., x-direction or -x-direction) and a second direction (e.g., y-direction or -y-direction) in a non-display area, for example, the first non-display area NDA1. Each of the second bridge portions 22 may connect adjacent second islands 21. The second bridge portions 22 may be spaced apart from each other by second openings CS2 located between the second bridge portions 22.

[0072] The second openings CS2 may have substantially the same shape as the first openings CS1. For example, the substantially H-shaped second openings CS2 and the substantially I-shaped second openings CS2 may be alternately and repeatedly arranged in a non-display area, for example, the first non-display area NDA1. Although both ends of each second bridge portion 22 are connected to the adjacent second island portions 21, one side of each second bridge portion 22 may be separated from one side of the adjacent second island portion 21 and / or one side of another second bridge portion 22 by the second openings CS2.

[0073] Each of the second island units 21 may be connected to four second bridge units 22. Each of the second island units 21 may include a driver of the gate driving circuit GDC (FIG. 3) described with reference to FIG.

[0074] Any one of the second island units 21 arranged in the first non-display area NDA1 may correspond to any one of the first island units 11 arranged in the display area DA. For example, the second island unit 21 arranged in the i-th row along the first direction (e.g., the x-direction or the -x-direction) in the first non-display area NDA1 may correspond to the first island unit 11 arranged in the same row, for example, the i-th row, in the display area DA (where i is a positive number greater than 0).

[0075] The display device 1 may include a third bridge portion 23 disposed in the second sub-non-display area SNDA2 for connecting the display area DA and the first sub-non-display area SNDA1. The non-display area, for example, the first non-display area NDA1, may include the first sub-non-display area SNDA1 in which the second island portion 21 and the second bridge portion 22 are disposed, and the third bridge portion 23, and may include the second sub-non-display area SNDA2 located between the first sub-non-display area SNDA1 and the display area DA. The third bridge portion 23 may be substantially the same as the first bridge portion 12 and the second bridge portion 22. For example, the width of the third bridge portion 23 may be the same as the width of the first bridge portion 12 and the width of the second bridge portion 22.

[0076] FIG. 4C is a plan view showing a part of a display device according to an embodiment of the present invention, in which a portion IV in FIG. 3 is enlarged.

[0077] Referring to FIG. 4C, the display device 1 may include first island portions 11 spaced apart from each other in a first direction (e.g., x direction or -x direction) and a second direction (e.g., y direction or -y direction) in a display area DA, and first bridge portions 12 connecting adjacent first island portions 11.

[0078] The first bridge portions 12 may be spaced apart from one another by first openings CS1 located between the first bridge portions 12. The first bridge portions 12 may have a serpentine shape. For example, as shown in FIG. 4C, the first bridge portions 12 may have a shape that is approximately the letter S.

[0079] Each first island portion 11 may be connected to a plurality of first bridge portions 12. For example, each first island portion 11 may be connected to four first bridge portions 12. Two first bridge portions 12 may be disposed on both sides of the first island portion 11 along a first direction (e.g., x direction or -x direction), and the remaining two first bridge portions 12 may be disposed on both sides of the first island portion 11 along a second direction (e.g., y direction or -y direction). The four first bridge portions 12 may be respectively connected to four sides of the first island portion 11. Each of the four first bridge portions 12 may be adjacent to each corner of the first island portion 11.

[0080] The display device 1 may include, in a non-display area, for example, the first non-display area NDA1 shown in FIG. 4C, second island portions 21 spaced apart from each other in a first direction (e.g., the x direction or the -x direction) and a second direction (e.g., the y direction or the -y direction), and second bridge portions 22 connecting adjacent second island portions 21.

[0081] The second bridge portions 22 may be spaced apart from one another by second openings CS2 located between the second bridge portions 22. The second bridge portions 22 may have a serpentine shape. For example, as shown in FIG. 4C, the second bridge portions 22 may have a shape that is approximately the letter S. The size and / or width of the second bridge portions 22 may be different from the size and / or width of the first bridge portion 12. For example, the size and / or width of the second bridge portion 22 may be larger than the size and / or width of the first bridge portion 12. The radius of curvature of the curved portion of the second bridge portion 22 may be different from the radius of curvature of the curved portion of the first bridge portion 12. For example, the radius of curvature of the curved portion of the second bridge portion 22 may be larger than the radius of curvature of the curved portion of the first bridge portion 12.

[0082] Each second island portion 21 may be connected to a plurality of second bridge portions 22. Each second island portion 21 may be connected to four second bridge portions 22. Two second bridge portions 22 may be disposed on both sides of the second island portion 21 along a first direction (e.g., x direction or −x direction), and the remaining two second bridge portions 22 may be disposed on both sides of the second island portion 21 along a second direction (e.g., y direction or −y direction). In one embodiment, the four second bridge portions 22 may be respectively connected to four sides of the second island portion 21. Each second bridge portion 22 may be connected to a central portion of each side of the second island portion 21.

[0083] Any one of the second island units 21 arranged in the first non-display area NDA1 may correspond to a plurality of rows of first island units 11 arranged in the display area DA. For example, any one of the second island units 21 arranged in the first non-display area NDA1 may correspond to the first island unit 11 arranged in the i-th row and the first island unit 11 arranged in the (i+1)th row of the display area DA (where i is a positive number greater than 0). In another embodiment, any one of the second island units 21 may correspond to the nth row of the first island units 11 (where n is a positive number greater than 3).

[0084] The non-display area, for example, the first non-display area NDA1, may include a first sub-non-display area SNDA1 in which the second island portion 21 and the second bridge portion 22 are arranged, and a second sub-non-display area SNDA2 between the first sub-non-display area SNDA1 and the display area DA. A third bridge portion 23 for connecting the display area DA and the first sub-non-display area SNDA1 may be arranged in the second sub-non-display area SNDA2. One end of the third bridge portion 23 may be connected to the second island portion 21, and the other end of the third bridge portion 23 may be connected to the first island portion 11. For example, one end of the third bridge portion 23 may be connected to a central portion of one side of the second island portion 21, and the other end of the third bridge portion 23 may be connected to a central portion of one side of the first island portion 11.

[0085] The third bridge portion 23 may have a serpentine shape. In one embodiment, the shape of the third bridge portion 23 may be different from the shapes of the first bridge portion 12 and the second bridge portion 22. The width of the third bridge portion 23 may be different from the width of the first bridge portion 12 and the width of the second bridge portion 22. The width of the third bridge portion 23 is wider than the width of the first bridge portion 12 and narrower than the width of the second bridge portion 22. In the second direction (e.g., the y direction or the -y direction), third openings CS3 and fourth openings CS4 having different shapes may be alternately arranged between the third bridge portions 23.

[0086] FIG. 5 is a cross-sectional view that illustrates a schematic view of the first island portion 11 and the first bridge portion 12 arranged in the display area DA of the display device 1 according to an embodiment of the present invention.

[0087] 5, the first island portion 11 and the first bridge portion 12 arranged in the display area DA may be spaced apart with a first opening CS1 in between. The first island portion 11 may include light emitting elements LED and circuits for driving the light emitting elements LED, e.g., pixel driving circuit portions PC, electrically connected thereto, and the first bridge portion 12 may include wiring WL electrically connected to the pixel driving circuit portions PC arranged in the adjacent first island portions 11.

[0088] Regarding the first island unit 11, a buffer layer 111 including an inorganic insulator may be disposed on the substrate 100, and a pixel driving circuit unit PC may be disposed on the buffer layer 111. An insulating layer IL including an inorganic insulator and / or an organic insulator may be disposed between the pixel driving circuit unit PC and the light emitting element LED. The light emitting element LED may be disposed on the insulating layer IL and electrically connected to the corresponding pixel driving circuit unit PC. The light emitting element LED may emit light of different colors or the same color. In one embodiment, the light emitting element LED may emit red, green, and blue light, respectively. In some embodiments, the light emitting element LED may emit white light. In other embodiments, the light emitting element LED may emit red, green, blue, and white light, respectively.

[0089] The substrate 100 may comprise a polymeric resin such as polyethersulfone, polyarylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polycarbonate, cellulose triacetate, or cellulose acetate propionate. In one embodiment, the substrate 100 may be a single layer comprising the aforementioned polymeric resin. In another embodiment, the substrate 100 may be a multi-layer structure including a base layer comprising the aforementioned polymeric resin and a barrier layer comprising an inorganic insulator. The substrate 100 comprising the polymeric resin may be flexible, rollable, and bendable.

[0090] 5 illustrates three pixel driving circuit units PC and three light emitting element LEDs connected to each pixel driving circuit unit PC in each first island unit 11, but the present invention is not limited thereto. In other embodiments, the number of pixel driving circuit units PC and light emitting element LEDs arranged in the first island unit 11 may be one, two, or four or more.

[0091] The encapsulation layer 300 is disposed on the light emitting element LED and can protect the light emitting element LED from external force and / or moisture. The encapsulation layer 300 can include an inorganic encapsulation layer and / or an organic encapsulation layer. In some embodiments, the encapsulation layer 300 can include a structure in which an inorganic encapsulation layer including an inorganic insulator, an organic encapsulation layer including an organic insulator, and an inorganic encapsulation layer including an inorganic insulator are stacked. In other embodiments, the encapsulation layer 300 can include an organic material such as a resin. In some embodiments, the encapsulation layer 300 can include a urethane epoxy acrylate. The encapsulation layer 300 can include a photosensitive material, for example, a material such as a photoresist.

[0092] Regarding the first bridge portion 12, an insulating layer IL containing an organic insulator may be disposed on the substrate 100. When the display device 1 is stretched, the first bridge portion 12, which is subject to relatively large deformation, differs from the first island portion 11 in that it does not have a layer containing an inorganic insulator in which cracks are likely to occur.

[0093] In one embodiment, the substrate 100 corresponding to the first bridge portion 12 may have the same layered structure as the substrate 100 corresponding to the first island portion 11. In one embodiment, the substrate 100 corresponding to the first bridge portion 12 and the substrate 100 corresponding to the first island portion 11 may be polymer resin layers formed together in the same process. In other embodiments, the substrate 100 corresponding to the first bridge portion 12 may have a layered structure different from that of the substrate 100 corresponding to the first island portion 11. In some embodiments, the substrate 100 corresponding to the first bridge portion 12 may have a multi-layer structure including a base layer including a polymer resin and a barrier layer including an inorganic insulator, and the substrate 100 corresponding to the first bridge portion 12 may have a structure of a polymer resin layer without a layer including an inorganic insulator.

[0094] As described above, the wiring WL of the first bridge portion 12 may be a signal line (e.g., a gate line, a data line, etc.) for providing an electrical signal to a transistor included in the pixel driving circuit portion PC of the first island portion 11, or a voltage line (e.g., a driving voltage line, an initialization voltage line, etc.) for providing a voltage to the transistor. The encapsulation layer 300 may also be disposed in the first bridge portion 12. In another embodiment, the encapsulation layer 300 may not be present in the first bridge portion 12.

[0095] 4A to 4C and 5, the substrate 100 corresponding to the first island portion 11 and the substrate 100 corresponding to the first bridge portion 12 may be connected to each other. In other words, the plan views previously illustrated in Figures 4A to 4C may be substantially the same as the plan view of the substrate 100 in Figure 5. In other words, the substrate 100 may include a region corresponding to the first island portion 11, a region corresponding to the first bridge portion 12, and an opening 100OP1 having the same shape as the first opening CS1.

[0096] Similarly, the encapsulation layer 300 corresponding to the first island portion 11 and the encapsulation layer 300 corresponding to the first bridge portion 12 may be connected to each other. For example, the plan views illustrated in Figures 4A to 4C above may be substantially the same as the plan views of the encapsulation layer 300. In other words, the encapsulation layer 300 may include a region corresponding to the first island portion 11, a region corresponding to the first bridge portion 12, and an opening 300OP1 having the same shape as the first opening CS1.

[0097] The circuit / light-emitting element layer 200 between the substrate 100 and the encapsulation layer 300 may include a buffer layer 111, a pixel driving circuit unit PC, wiring WL, an insulating layer IL, and light-emitting elements LED. Similar to the substrate 100, the plan views previously illustrated in Figures 4A to 4C may be substantially the same as the plan views of the circuit / light-emitting element layer 200. In other words, the circuit / light-emitting element layer 200 may include an opening 200OP1 having the same shape as the first opening CS1.

[0098] 6A to 6C are equivalent circuit diagrams of sub-pixels of a display device 1 according to an embodiment of the present invention.

[0099] 6A, the light emitting element LED corresponding to the sub-pixel is electrically connected to a pixel driving circuit PC, which may include a first transistor T1, a second transistor T2, and a storage capacitor Cst. The pixel driving circuit PC may be electrically connected to signal lines and voltage lines. The signal lines may include gate lines such as a first scan line SL1 and a data line DL, and the voltage lines may include a first voltage line VDDL. The light emitting element LED may be electrically connected to the pixel driving circuit PC and the second voltage line VSSL.

[0100] The second transistor T2 may be electrically connected to the first scan line SL1 and the data line DL. The first scan line SL1 may provide a first scan signal GW to a gate electrode of the second transistor T2. The second transistor T2 may transfer a data signal Dm input from the data line DL to the first transistor T1 in response to the first scan signal GW input from the first scan line SL1.

[0101] The storage capacitor Cst is electrically connected to the second transistor T2 and the first voltage line VDDL, and can store a voltage corresponding to the difference between the voltage transmitted from the second transistor T2 and the first power supply voltage VDD provided by the first voltage line VDDL.

[0102] The first transistor T1 is a driving transistor and may control a driving current flowing through the LED light emitting element. The first transistor T1 may be connected to a first voltage line VDDL and a storage capacitor Cst. The first transistor T1 may control a driving current flowing from the first voltage line VDDL to the LED light emitting element in response to a voltage value stored in the storage capacitor Cst. The LED light emitting element may emit light having a predetermined brightness according to the driving current. A first electrode of the LED light emitting element may be electrically connected to the first transistor T1, and a second electrode may be electrically connected to a second voltage line VSSL that supplies a second power supply voltage VSS.

[0103] Although FIG. 6A illustrates the pixel driving circuit section PC including two transistors and one storage capacitor, in other embodiments, the pixel driving circuit section PC may include three or more transistors.

[0104] Referring to FIG. 6B, the pixel driving circuit unit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor Cst.

[0105] The pixel driving circuit PC is electrically connected to signal lines and voltage lines. The signal lines may include gate lines such as a first scan line SL1, a second scan line SL2, a third scan line SL3, a fourth scan line SL4, and an emission control line EML; and a data line DL. The voltage lines may include a first initialization voltage line VIL1, a second initialization voltage line VIL2, and a first voltage line VDDL.

[0106] The first voltage line VDDL may transmit a first power supply voltage VDD to the first transistor T1. The first initialization voltage line VIL1 may transmit a first initialization voltage Vint for initializing the first transistor T1 to the pixel driving circuit unit PC. The second initialization voltage line VIL2 may transmit a second initialization voltage Vaint for initializing the first electrode of the light emitting element LED to the pixel driving circuit unit PC.

[0107] The first transistor T1 is electrically connected to the first voltage line VDDL via the fifth transistor T5, and is electrically connected to the LED light emitting element via the sixth transistor T6. The first transistor T1 serves as a driving transistor, and receives a data signal Dm through a switching operation of the second transistor T2 to supply a driving current to the LED light emitting element.

[0108] The second transistor T2 is a data write transistor and is electrically connected to the first scan line SL1 and the data line DL. The second transistor T2 is electrically connected to the first voltage line VDDL via the fifth transistor T5. The second transistor T2 is turned on by the first scan signal GW transmitted through the first scan line SL1 and performs a switching operation of transmitting the data signal Dm transmitted from the data line DL to the first node N1.

[0109] The third transistor T3 is electrically connected to the first scan line SL1 and is electrically connected to the light emitting element LED via the sixth transistor T6. The third transistor T3 is turned on by the first scan signal GW transmitted through the first scan line SL1 to diode-connect the first transistor T1.

[0110] The fourth transistor T4 is a first initialization transistor and is electrically connected to the third scan line SL3 and the first initialization voltage line VIL1. The fourth transistor T4 is turned on by the third scan signal GI transmitted through the third scan line SL3 and transmits the first initialization voltage Vint from the first initialization voltage line VIL1 to the gate electrode of the first transistor T1 to initialize the voltage of the gate electrode of the first transistor T1. The third scan signal GI may correspond to a first scan signal of another pixel driving circuit unit arranged in a row preceding the pixel driving circuit unit PC.

[0111] The fifth transistor T5 may be an operation control transistor, and the sixth transistor T6 may be an emission control transistor. The fifth transistor T5 and the sixth transistor T6 are electrically connected to an emission control line EML and are simultaneously turned on by an emission control signal EM transmitted through the emission control line EML to form a current path for a driving current to flow from the first voltage line VDDL to the light emitting element LED.

[0112] The seventh transistor T7 is a second initialization transistor and may be electrically connected to the second scan line SL2, the second initialization voltage line VIL2, and the sixth transistor T6. The seventh transistor T7 is turned on by the second scan signal GB transmitted through the second scan line SL2 to transmit the second initialization voltage Vaint from the second initialization voltage line VIL2 to the first electrode of the light emitting element LED to initialize the first electrode of the light emitting element LED.

[0113] The storage capacitor Cst includes a first electrode CE1 and a second electrode CE2. The first electrode CE1 is electrically connected to the gate electrode of the first transistor T1, and the second electrode CE2 is electrically connected to the first voltage line VDDL. The storage capacitor Cst stores and maintains a voltage corresponding to a voltage difference between the first voltage line VDDL and the gate electrode of the first transistor T1, thereby maintaining a voltage applied to the gate electrode of the first transistor T1.

[0114] Referring to FIG. 6C, the pixel driving circuit unit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, an eighth transistor T8, a ninth transistor T9, a storage capacitor Cst, and an auxiliary capacitor Ca.

[0115] The pixel driving circuit unit PC is electrically connected to the signal lines and the voltage lines. The signal lines may include gate lines such as the first scan line SL1, the second scan line SL2, the third scan line SL3, the fourth scan line SL4, and the emission control line EML; and the data line DL. The voltage lines may include the first initialization voltage line VIL1 and the second initialization voltage line VIL2, the maintenance voltage line VSL, and the first voltage line VDDL. The light emitting element LED may be electrically connected to the pixel driving circuit unit PC and the second voltage line VSSL.

[0116] The first voltage line VDDL may transmit a first power supply voltage VDD to the first transistor T1. The first initialization voltage line VIL1 may transmit a first initialization voltage Vint for initializing the first transistor T1 to the pixel driving circuit unit PC. The second initialization voltage line VIL2 may transmit a second initialization voltage Vaint for initializing a first electrode of the light emitting element LED to the pixel driving circuit unit PC. The sustain voltage line VSL may provide a sustain voltage VSUS to a second node N2, for example, a second electrode CE2 of the storage capacitor Cst, during an initialization period and a data writing period.

[0117] The first transistor T1 may be electrically connected to the first voltage line VDDL via the fifth transistor T5 and the eighth transistor T8, and may be electrically connected to the light emitting element LED via the sixth transistor T6. The first transistor T1 may act as a driving transistor, and may transmit a data signal Dm by switching the second transistor T2 to supply a driving current to the light emitting element LED.

[0118] The second transistor T2 is electrically connected to the first scan line SL1 and the data line DL, and is electrically connected to the first voltage line VDDL via the fifth transistor T5 and the eighth transistor T8. The second transistor T2 is turned on by the first scan signal GW transmitted through the first scan line SL1, and performs a switching operation of transmitting the data signal Dm transmitted from the data line DL to the first node N1.

[0119] The third transistor T3 is electrically connected to the first scan line SL1 and electrically connected to the light emitting element LED via the sixth transistor T6. The third transistor T3 is turned on by the first scan signal GW transmitted through the first scan line SL1, and may compensate the threshold voltage of the first transistor T1 by diode-connecting the first transistor T1.

[0120] The fourth transistor T4 is electrically connected to the third scan line SL3 and the first initialization voltage line VIL1, and is turned on by the third scan signal GI transmitted through the third scan line SL3 to transmit the first initialization voltage Vint from the first initialization voltage line VIL1 to the gate electrode of the first transistor T1 to initialize the voltage of the gate electrode of the first transistor T1. The third scan signal GI may correspond to a first scan signal of another pixel driving circuit unit arranged in a row preceding the pixel driving circuit unit PC.

[0121] The fifth transistor T5, the sixth transistor T6 and the eighth transistor T8 are electrically connected to the light emitting control line EML and are simultaneously turned on by the light emitting control signal EM transmitted through the light emitting control line EML to form a current path for a driving current to flow from the first voltage line VDDL to the light emitting element LED.

[0122] The seventh transistor T7 is a second initialization transistor and may be electrically connected to the second scan line SL2, the second initialization voltage line VIL2, and the sixth transistor T6. The seventh transistor T7 is turned on by the second scan signal GB transmitted through the second scan line SL2 to transmit the second initialization voltage Vaint from the second initialization voltage line VIL2 to the first electrode of the light emitting element LED to initialize the first electrode of the light emitting element LED.

[0123] The ninth transistor T9 may be electrically connected to the second scan line SL2, the second electrode CE2 of the storage capacitor Cst, and the sustain voltage line VSL. The ninth transistor T9 may be turned on by the second scan signal GB transmitted through the second scan line SL2 to transmit a sustain voltage VSUS to the second node N2, for example, the second electrode CE2 of the storage capacitor Cst, during an initialization period and a data write period.

[0124] The eighth transistor T8 and the ninth transistor T9 may each be electrically connected to a second node N2, for example, a second electrode CE2 of the storage capacitor Cst. In some embodiments, the eighth transistor T8 may be turned off and the ninth transistor T9 may be turned on in an initialization period and a data writing period, and the eighth transistor T8 may be turned on and the ninth transistor T9 may be turned off in a light emitting period. In the initialization period and the data writing period, the second node N2 receives a sustain voltage VSUS, and the luminance uniformity (e.g., long range uniformity (LRU)) of the display device due to a voltage drop of the first voltage line VDDL may be improved.

[0125] The storage capacitor Cst includes a first electrode CE1 and a second electrode CE2, the first electrode CE1 being electrically connected to the gate electrode of the first transistor T1, and the second electrode CE2 being electrically connected to the eighth transistor T8 and the ninth transistor T9.

[0126] The auxiliary capacitor Ca may be electrically connected to the sixth transistor T6, the sustain voltage line VSL, and the first electrode of the light emitting element LED. The auxiliary capacitor Ca may store and maintain a voltage corresponding to a voltage difference between the first electrode of the light emitting element LED and the sustain voltage line VSL while the seventh transistor T7 and the ninth transistor T9 are turned on, thereby preventing an increase in black luminance when the sixth transistor T6 is turned off.

[0127] FIG. 7A is a schematic cross-sectional view of a light emitting element of a display device according to one embodiment of the present invention.

[0128] 7A, a light emitting element according to an embodiment of the present invention may include an organic light emitting diode 220 including an organic material. The organic light emitting diode 220 may include a first electrode 221 disposed on an insulating layer, a second electrode 225 facing the first electrode 221, and an emitting layer 223 interposed between the first electrode 221 and the second electrode 225. A first functional layer 222 may be disposed between the first electrode 221 and the emitting layer 223, and a second functional layer 224 may be disposed between the emitting layer 223 and the second electrode 225.

[0129] The edge of the first electrode 221 may be covered by a bank layer BKL including an insulator. The bank layer BKL may include an opening B-OP overlapping the center portion of the first electrode 221.

[0130] The first electrode 221 is made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In 2 O 3In another embodiment, the first electrode 221 may include a reflective layer including silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or a combination thereof. In another embodiment, the first electrode 221 may include a reflective layer including ITO, IZO, ZnO, AZO, or In above or below the reflective layer. 2 O 3 The coating may further include a layer formed by

[0131] The light emitting layer 223 may include a polymer organic material or a small molecule organic material that emits a predetermined color light. The first functional layer 222 may include a hole transport layer (HTL) and / or a hole injection layer (HIL). The second functional layer 224 may include an electron transport layer (ETL) and / or an electron injection layer (EIL).

[0132] The second electrode 225 may be made of a conductive material having a low work function. For example, the second electrode 225 may include a (semi-)transparent layer containing silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof. Alternatively, the second electrode 225 may include a (semi-)transparent layer containing the aforementioned material and a (semi-)transparent layer containing ITO, IZO, ZnO, AZO, or In. 2 O 3 It may further include such layers.

[0133] FIG. 7B is a schematic cross-sectional view of a light-emitting element of a display device according to one embodiment of the present invention.

[0134] 7B, in one embodiment of the present invention, the light emitting element may include an inorganic light emitting diode 230 including an inorganic material. The inorganic light emitting diode 230 may include a first semiconductor layer 231, a second semiconductor layer 232, an intermediate layer 233 between the first semiconductor layer 231 and the second semiconductor layer 232, a first electrode 235 electrically connected to the first semiconductor layer 231, and a second electrode 238 electrically connected to the second semiconductor layer 232. The first electrode 235 and the second electrode 238 of the inorganic light emitting diode 230 may be electrically connected to a first electrode pad 241 and a second electrode pad 242, respectively, which are disposed on the same layer.

[0135] In some embodiments, the first semiconductor layer 231 may include a p-type semiconductor layer. x Al y Ga 1-x-y The semiconductor material may be selected from a semiconductor material having a composition formula of 0≦x≦1, 0≦y≦1, 0≦x+y≦1, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, etc., and may be doped with a p-type dopant such as Mg, Zn, Ca, Sr, or Ba.

[0136] The second semiconductor layer 232 may include, for example, an n-type semiconductor layer. x Al y Ga 1-x-y The semiconductor material may be selected from a semiconductor material having a composition formula of 0≦x≦1, 0≦y≦1, 0≦x+y≦1, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, etc., and may be doped with an n-type dopant such as Si, Ge, or Sn.

[0137] In the intermediate layer 233, in a region where electrons and holes are recombined, the electrons and holes are transferred to a lower energy level by recombining, and light having a corresponding wavelength can be generated. x Aly Ga 1-x-y The semiconductor layer may be formed by including a semiconductor material having a composition formula of N(0≦x≦1, 0≦y≦1, 0≦x+y≦1), and may be formed with a single quantum well structure or a multi-quantum well (MQW) structure. It may also include a quantum wire structure or a quantum dot structure.

[0138] 7B illustrates the first semiconductor layer 231 including a p-type semiconductor layer and the second semiconductor layer 232 including an n-type semiconductor layer, the present invention is not limited thereto. In other embodiments, the first semiconductor layer 231 may include an n-type semiconductor layer and the second semiconductor layer 232 may include a p-type semiconductor layer.

[0139] FIG. 8 is a plan view illustrating a part of a display device according to an embodiment of the present invention.

[0140] 8, the display device 1 may include first island portions 11 spaced apart from each other in a first direction (e.g., x-direction or -x-direction) and a second direction (e.g., y-direction or -y-direction) in a display area DA, and first bridge portions 12 connecting adjacent first island portions 11. The first bridge portions 12 may be spaced apart from each other by first openings CS1 located between the first bridge portions 12. The first bridge portions 12 may have a serpentine shape (e.g., approximately "S" shaped).

[0141] Each of the first island portions 11 may be connected to a plurality of first bridge portions 12. For example, each of the first island portions 11 may be connected to four first bridge portions 12. Two of the first bridge portions 12 may be disposed on both sides of the first island portion 11 along a first direction (e.g., x direction or -x direction), and the remaining two of the first bridge portions 12 may be disposed on both sides of the first island portion 11 along a second direction (e.g., y direction or -y direction). The four first bridge portions 12 may be connected to the four sides of the first island portion 11, respectively. Each of the first bridge portions 12 may be disposed adjacent to a corner of the first island portion 11.

[0142] 8 may include a first sub-non-display area SNDA1, a second sub-non-display area SNDA2, and a third sub-non-display area SNDA3. The second sub-non-display area SNDA2 may be disposed between the first sub-non-display area SNDA1 and the display area DA, and the third sub-non-display area SNDA3 may be disposed on the opposite side of the second sub-non-display area SNDA2 across the first sub-non-display area SNDA1. The third sub-non-display area SNDA3 may correspond to the outermost portion of the display device 1.

[0143] In the first sub-non-display area SNDA1, second island portions 21 spaced apart from each other in a first direction (e.g., x-direction or -x-direction) and a second direction (e.g., y-direction or -y-direction) and second bridge portions 22 connecting adjacent second island portions 21 may be arranged. The second bridge portions 22 may be spaced apart from each other by second openings CS2 located between the second bridge portions 22. The second bridge portions 22 may have a serpentine shape (e.g., approximately "S" shaped).

[0144] Each second island portion 21 may be connected to a plurality of second bridge portions 22. Each second island portion 21 may be connected to four second bridge portions 22. Two second bridge portions 22 may be disposed on both sides of the second island portion 21 along a first direction (e.g., x direction or −x direction), and the remaining two second bridge portions 22 may be disposed on both sides of the second island portion 21 along a second direction (e.g., y direction or −y direction). In one embodiment, the four second bridge portions 22 may be respectively connected to four sides of the second island portion 21. Each second bridge portion 22 may be connected to a central portion of each side of the second island portion 21.

[0145] Any one of the second island units 21 arranged in the first non-display area NDA1 may correspond to a plurality of rows of first island units 11 arranged in the display area DA. For example, any one of the second island units 21 arranged in the first non-display area NDA1 may correspond to the first island unit 11 arranged in the i-th row and the first island unit 11 arranged in the (i+1)th row of the display area DA (where i is a positive number greater than 0). In another embodiment, any one of the second island units 21 may correspond to the nth row of the first island units 11 (where n is a positive number greater than 3).

[0146] A third bridge portion 23 for connecting the display area DA and the first sub-non-display area SNDA1 may be disposed in the second sub-non-display area SNDA2. One end of the third bridge portion 23 may be connected to the second island portion 21, and the other end of the third bridge portion 23 may be connected to the first island portion 11. For example, one end of the third bridge portion 23 may be connected to a central portion of one side of the second island portion 21, and the other end of the third bridge portion 23 may be connected to a central portion of one side of the first island portion 11.

[0147] Any one of the second islands 21 in any one row may be connected to any one of the first islands 11 arranged in the i-th row and any one of the first islands 11 arranged in the (i+1)th row in the display area DA using the third bridge portion 23. In one embodiment, as shown in FIG 8, any one of the second islands 21 may be connected to two first islands 11 arranged in different rows via two third bridge portions 23. In another embodiment, any one of the second islands 21 may be connected to three or more first islands 11 arranged in different rows via three or more third bridge portions 23.

[0148] The third bridge portion 23 may have a serpentine shape. In one embodiment, the shape of the third bridge portion 23 may be different from the shapes of the first bridge portion 12 and the second bridge portion 22. The width of the third bridge portion 23 may be different from the width of the first bridge portion 12 and the width of the second bridge portion 22. The width of the third bridge portion 23 is wider than the width of the first bridge portion 12 and narrower than the width of the second bridge portion 22. In the second direction (e.g., the y direction or the -y direction), third openings CS3 and fourth openings CS4 having different shapes may be alternately arranged between the third bridge portions 23. In one embodiment, the third bridge portion 23 may include a portion that is curved in the clockwise direction and a portion that is curved in the counterclockwise direction.

[0149] The third island portions 31 may be arranged in the third sub-non-display area SNDA3. The third island portions 31 may correspond to the second island portions 21 arranged in any one row. One third island portion 31 may be connected to one second island portion 21 via a second bridge portion 22 arranged on the outermost edge. A spacer portion 32 may be located between adjacent third island portions 31. The spacer portion 32 is a kind of an opening, and adjacent third island portions 31 may be spatially and physically separated from each other.

[0150] According to an embodiment, the stretch ratio of the non-display area of ​​the display device 1 may be lower than the stretch ratio of the display area DA. The stretch ratios of the first sub-non-display area SNDA1, the second sub-non-display area SNDA2, and the third sub-non-display area SNDA3 of the display device 1 may be different from each other. The stretch ratio of the first sub-non-display area SNDA1 of the display device 1 illustrated in FIG. 8 may be lower than the stretch ratio of the display area DA. The stretch ratio of the third sub-non-display area SNDA3 may be lower than the stretch ratio of the first sub-non-display area SNDA1.

[0151] In some embodiments, the stretch ratio of the second non-display area SNDA2 may be lower than the stretch ratio of the first non-display area SNDA1 and lower than the stretch ratio of the display area DA, while in other embodiments, the stretch ratio of the second non-display area SNDA2 may be higher than the stretch ratio of the first non-display area SNDA1 and lower than the stretch ratio of the display area DA.

[0152] As described above, since the extension ratio of the non-display area and the extension ratio of the display area DA are different from each other, it is possible to stably maintain an electrical connection between the driver of the gate driving circuit GDC (FIG. 3) that may be arranged on the second island portion 21 and the transistors arranged on the first island portion 11. In addition, it is possible to stably maintain each process step during the manufacturing process of a display device having openings (e.g., the first opening CS1, the second opening CS2, the third opening CS3, and the fourth opening CS4).

[0153] The width Wi1 of the first island portion 11 disposed in the display area DA may be narrower than the width Wi2 of the second island portion 21 disposed in the non-display area (Wi1 < Wi2). The first distance BS1 between two adjacent first island portions 11 disposed in the display area DA may be shorter than the second distance BS2 between two adjacent second island portions 21 disposed in the non-display area (BS1 < BS2). The ratio of the first distance BS1 to the width Wi1 of the first island portion 11 may be higher than the ratio of the second distance BS2 to the width Wi2 of the second island portion 21 (BS1 / Wi1 > BS2 / Wi2). The minimum value of the width Wi1 of the first island portion 11 may be several tens of μm. For example, the width Wi1 of the first island portion 11 may be several tens to several hundreds of μm. In some embodiments, the width Wi1 of the first island portion 11 may be from about 10 μm to about 300 μm.

[0154] FIG. 8 shows the first island portion 11 and the second island portion 21 as being quadrilaterals (e.g., squares), but the present invention is not limited thereto. The first island portion 11 and / or the second island portion 21 may be rectangles. Alternatively, the first island portion 11 and / or the second island portion 21 may be polygons having five or more sides or circles. In one embodiment, the polygon having five or more sides described above may be a regular polygon.

[0155] FIG. 9 is a plan view excerpting any one of the first bridge portions included in the display area of FIG. 8 and its surroundings.

[0156] Referring to FIGS. 8 and 9, the first bridge portion 12 is disposed in the gap between two adjacent first island portions 11 and may have a substantially "S" shape. The first bridge portion 12 may have a relatively constant width. For example, the first bridge portion 12 may have a first width w1.

[0157] The first bridge part 12 may include two first round parts 12A and a straight part 12B between the two first round parts 12A. The widths of the two first round parts 12A and the width of the straight part 12B may be substantially the same. For example, each of the two first round parts 12A and the straight part 12B may have a first width w1.

[0158] Each first round part 12A may have a substantially arc shape. For example, each first round part 12A may have the shape of an arc with a central angle of a first angle θ1. The first angle θ1 may be a major angle.

[0159] The radius of curvature r1 of the first round part 12A is the radius of a virtual circle passing through a point that is half of the width of the first round part 12A. The radius of curvature r1 of the first round part 12A is larger than the radius of curvature r of the inner edge of the first round part 12A and smaller than the radius of curvature R of the outer edge of the first round part 12A (r < r1 < R). The radius of curvature r1 of the first round part 12A may be the same as the sum of the radius of curvature r of the inner edge and half of the first width w1 (r1 = r + (1 / 2) × w1). Or, the radius of curvature r1 of the first round part 12A may also be the same as the difference between the radius of curvature R of the outer edge and half of the first width w1 (r1 = R - (1 / 2) × w1). The aforementioned r, r1, and R have different values from each other, but the centers of the circles with the aforementioned parameters as radii are C1 and are the same. In other words, the center of the circle corresponding to the radius of curvature r1 of the first round part 12A, the center of the circle corresponding to the radius of curvature r of the inner edge of the first round part 12A, and the center of the circle corresponding to the radius of curvature R of the outer edge of the first round part 12A may all be C1 and are the same.

[0160] The straight portion 12B may have a substantially straight shape. For example, the straight portion 12B may have a first width w1 and a first length L1. The first length L1 of the straight portion 12B may be greater than the first width w1. The straight portion 12B may extend obliquely with respect to the edge 11E of the first island portion 11. For example, the edge 12BE of the straight portion 12B may not be parallel to the edge 11E of the first island portion 11, but may form a predetermined angle δ with the edge 11E of the first island portion 11.

[0161] One end of the straight portion 12B may be connected to one of the first round portions 12A, which is curved in a clockwise direction as shown in FIG. 9, and the other end of the straight portion 12B may be connected to another of the first round portions 12A, which is curved in a clockwise direction as shown in FIG. 9.

[0162] When the display device 1 (FIG. 8) is deformed (for example, when stretched), the distance between two adjacent first island portions 11 can be changed as the shape of the first bridge portion 12 is deformed.

[0163] The first distance BS1 between two adjacent first island portions 11, and the above-mentioned r1, L1, and α1 may have the relationship represented by the following mathematical formula 1.

[0164] <Formula 1> (BS1)min=2r1×(2+cosα1)-L1×sinα1

[0165] Here, (BS1)min indicates the minimum value of the first distance BS1 between two adjacent first island portions 11, r1 indicates the radius of curvature r1 of the first round portion 12A mentioned above, L1 indicates the length of the straight portion 12B, and α1 is the value obtained by subtracting 180° from the first angle θ1, which is the central angle of the first round portion 12A (α1=θ1-180°).

[0166] As the radius of curvature r1 of the first round portion 12A, the first length L1 of the straight portion 12B, and the angle α1 obtained by subtracting 180° from the first angle θ1 which is the central angle of the first round portion 12A each become larger, when the display device 1 (FIG. 8) is deformed (for example, stretched), the stress applied to the first bridge portion 12 is more easily dispersed. However, the gap between two adjacent first island portions 11 is constant, and since the first bridge portion 12 has a meandering shape as described above, the aforementioned r1, L1, and α1 may have a trade-off relationship. In order to minimize the stress applied to the first bridge portion 12 during pulling, the aforementioned r1 may have a value greater than 1 / 4 of the first distance BS1. For example, r1 may satisfy the condition of 0.25×BS1 < r1 < 0.5×BS1. In some embodiments, α1 may be an acute angle. In other words, the first angle θ1 which is the central angle of the first round portion 12A may be greater than 180° and less than 270°. In one embodiment, α1 may be greater than 0° and equal to or less than 60° (0° < α1 ≤ 60°).

[0167] In some embodiments, L1 may be greater than r1. In other embodiments, L1 may be equal to r1 or less than r1.

[0168] The first bridge portion 12 may be integrally connected to the first round portion 12A and may include a second round portion 12C located between the first round portion 12A and the first island portion 11. Each second round portion 12C may be integrally connected to one end of the first round portion 12A.

[0169] One end of the straight portion 12B may be connected to one of the first island portions 11 (e.g., the first island portion illustrated on the right side of FIG. 9) via one of the first round portions 12A that are curved in a clockwise direction and one of the second round portions 12C that are curved in a counterclockwise direction as shown in FIG. 9. The other end of the straight portion 12B may be connected to another of the first island portions 11 (e.g., the first island portion illustrated on the left side of FIG. 9) via another of the first round portions 12A that are curved in a clockwise direction and one of the second round portions 12C that are curved in a counterclockwise direction as shown in FIG. 9.

[0170] Each second round portion 12C may have a substantially arcuate shape. For example, each second round portion 12C may have a circular arc shape having a central angle of a second angle θ2. The second angle θ2 may be smaller than the first angle θ1.

[0171] The radius of curvature r2 of the second round portion 12C is the radius of an imaginary circle passing through a point that is 1 / 2 the width of the second round portion 12C. In some embodiments, the center C2 of the imaginary circle may be located on an imaginary straight line VL1 that passes through the edge 11E of the first island portion 11, but the present invention is not limited thereto. In other embodiments, the center C2 of the imaginary circle may be spaced apart from the imaginary straight line VL1.

[0172] The radius of curvature r2 of the second round portion 12C may be equal to or smaller than the radius of curvature r1 of the first round portion 12A (r2≦r1). The width of the second round portion 12C may be substantially equal to the width of the first round portion 12A and the width of the straight portion 12B. For example, the width of the second round portion 12C may be a first width w1.

[0173] The first bridge portion 12 may be located in a gap between two adjacent first island portions 11 that the first bridge portion 12 connects, for example, a gap having a first distance BS1. A length LT1 occupied by the first bridge portion 12 along a direction intersecting the first distance BS1 may be longer than a width Wi1 of the first island portion 11. The length LT1 occupied by the first bridge portion 12 indicates the linear distance between the outermost edges of the first bridge portion 12 measured in a direction intersecting the first distance BS1. In some embodiments, the length LT1 occupied by the first bridge portion 12 may be greater than the width Wi1 of the first island portion 11 and less than the sum of the width Wi1 of the first island portion 11 and the first distance BS1 (Wi1 <LT1<Wi1+BS1)。

[0174] FIG. 10 is a plan view showing an excerpt of a part arranged in the display area of ​​FIG.

[0175] 10, one first island portion 11 may be connected to four first bridge portions 12. One first bridge portion 12 is disposed between two adjacent first island portions 11 to connect the two adjacent first island portions 11.

[0176] Each of the four first bridge portions 12 may be adjacent to a respective corner of the first island portion 11. One of the first bridge portions 12 may be connected to the first edge 11E1 of the first island portion 11 so as to be adjacent to the corner where the first edge 11E1 and the second edge 11E2 meet. Another of the first bridge portions 12 may be connected to the second edge 11E2 of the first island portion 11 so as to be adjacent to the corner where the second edge 11E2 and the third edge 11E3 meet. Yet another of the first bridge portions 12 may be connected to the third edge 11E3 of the first island portion 11 so as to be adjacent to the corner where the third edge 11E3 and the fourth edge 11E4 meet. Yet another of the first bridge portions 12 may be connected to the fourth edge 11E4 of the first island portion 11 so as to be adjacent to the corner where the fourth edge 11E4 and the first edge 11E1 meet. Each of the first bridge portions 12 may have the structure previously described with reference to FIG.

[0177] In order to prevent interference between adjacent first bridge portions 12, the distance between points A and B may be greater than the sum of twice the radius of curvature r1 of the first round portion 12A in each first bridge portion 12 and the first width w1 of the first round portion 12A (the straight-line distance between points A and B > 2r1 + w1). Here, points A and B may be the centers of imaginary circles (C1 previously described with reference to FIG. 9) corresponding to the first round portions 12A of each of the adjacent first bridge portions 12.

[0178] When the distance between the centers of two adjacent first island portions 11 is p, the relationship between the radius of curvature r1 of the first round portion 12A of the first bridge portion 12, the first width w1 of the first round portion 12A, and the width Wi1 of the first island portion 11 is as shown in the following equation 2.

[0179] <Formula 2> JPEG2025028779000002.jpg10115

[0180] FIG. 11 is a plan view showing an excerpt of the second bridge portion arranged in the non-display area of ​​FIG.

[0181] 8 and 11, the second bridge portion 22 may be disposed in a gap between two adjacent second island portions 21 and may have a substantially "S" shape. The second bridge portion 22 may have a relatively constant width. For example, the second bridge portion 22 may have a second width w2. The second bridge portion 22 may have a different shape from the first bridge portion 12. For example, the first bridge portion 12 and the second bridge portion 22 may have a serpentine shape, for example, a substantially "S" shape, but the specific shapes may be different from each other.

[0182] The second bridge portion 22 may include two first round portions 22A and a first straight portion 22B between the two first round portions 22A. The widths of the two first round portions 22A and the width of the first straight portion 22B may be substantially the same. For example, each of the two first round portions 22A and the first straight portion 22B may have a second width w2. The second width w2 may be wider than the first width w1.

[0183] Each of the first round portions 22A may have a substantially arcuate shape. For example, each of the first round portions 22A may have a circular arc shape with a central angle of a third angle θ3. The third angle θ3 may be a reflex angle. The third angle θ3 may be different from the first angle θ1 described above with reference to FIG. 9.

[0184] The radius of curvature R1 of the first rounded portion 22A is the radius of a virtual circle that passes beyond the point that is half of the width of the first rounded portion 12A. The radius of curvature R1 of the first rounded portion 22A is larger than the radius of curvature r' of the inner edge of the first rounded portion 22A and smaller than the radius of curvature R' of the outer edge of the first rounded portion 12A (r' < R1 < R'). The radius of curvature R1 of the first rounded portion 22A can be the same as the sum of the radius of curvature r' of the inner edge and half of the second width w2 (R1 = r' + (1 / 2) × w2). Or, the radius of curvature R1 of the first rounded portion 22A can be the same as the difference between the radius of curvature R' of the outer edge and half of the second width w2 (R1 = R' - (1 / 2) × w2). The aforementioned r', R1, and R' have different values from each other, but the centers of the circles with the aforementioned parameters as the radii can be the same as C3. In other words, the center of the circle corresponding to the radius of curvature R1 of the first rounded portion 22A, the center of the circle corresponding to the radius of curvature r' of the inner edge of the first rounded portion 22A, and the center of the circle corresponding to the radius of curvature R' of the outer edge of the first rounded portion 22A can all be the same as C3.

[0185] The radius of curvature R1 of the first rounded portion 22A of the second bridge portion 22 can be larger than the radius of curvature r1 of the first rounded portion 12A of the first bridge portion 12, which was described above with reference to FIG. 9 (R1 > r1).

[0186] The first straight portion 22B can have a substantially linear shape. For example, the first straight portion 22B can have the second width w2 and the second length L2. In some embodiments, the second length L2 of the first straight portion 22B can be larger than the second width w2. The first straight portion 22B can be oblique with respect to the edge 21E of the second island portion 21. For example, the edge 22BE of the first straight portion 22B is not parallel to the edge 21E of the second island portion 21 and can form a predetermined angle φ with the edge 21E of the second island portion 21. The second length L2 is different from the first length L1 described above with reference to FIG. 9, and the aforementioned angle φ can also be different from the angle δ described above with reference to FIG. 9.

[0187] One end of the first straight portion 22B may be connected to one of the first round portions 22A that are curved in the clockwise direction as shown in FIG. 11, and the other end of the first straight portion 22B may be connected to another one of the first round portions 22A that are curved in the clockwise direction as shown in FIG. 11.

[0188] When the display device 1 (FIG. 8) is deformed (for example, when stretched), the shape of the second bridge portion 22 is changed, and the distance between two adjacent second island portions 21 can be changed.

[0189] In some embodiments, the second distance BS2 between two adjacent second island portions 21, and the above-mentioned R1, L2, and α2 may have the relationship of Equation 3 below.

[0190] <Formula 3> (BS2)min=2R1×(2+cosα2)-L2×sinα2

[0191] Here, (BS2)min indicates the minimum value of the second distance BS2 between the two second island portions 21, R1 indicates the radius of curvature R1 of the first round portion 22A mentioned above, L2 indicates the length of the first straight portion 22B, and α2 is the value obtained by subtracting 180° from the third angle θ3, which is the central angle of the first round portion 22A (α2=θ3-180°).

[0192] The radius of curvature r1 of the first rounded portion 22A, the first length L1 of the straight portion 12B, and the first rounded portion 22A are such that as each of the angles α1 obtained by subtracting 180° from the third angle θ3 (which is a central angle) increases, when the display device 1 (FIG. 8) is deformed (for example, stretched), the stress applied to the second bridge portion 22 becomes easier to disperse. However, the gap between two adjacent second island portions 21 is constant, and since the two bridge portions 22 have a meandering shape as described above, the aforementioned R1, L2, and α2 may have a trade-off relationship. In order to minimize the stress applied to the second bridge portion 22 during pulling, the aforementioned R1 may have a value greater than 1 / 4 of the second distance BS2. For example, R1 may satisfy the condition 0.25×BS2 < R1 < 0.5×BS2.

[0193] In some embodiments, α2 can be an acute angle. In other words, the third angle θ3, which is the central angle of the first rounded portion 22A, can be greater than 180° and less than 270°. In one embodiment, α2 can be greater than 0° and equal to or less than 60° (0° < α2 ≤ 60°).

[0194] In some embodiments, L2 can be greater than R1. In other embodiments, L2 can be equal to R1 or less than R1.

[0195] The second bridge portion 22 can include a second straight portion 22D and a second rounded portion (22C) located between the first rounded portion 22A and the second island portion 21. The second straight portion 22D can be disposed between the first rounded portion 22A and the second rounded portion 22C. Both ends of the second straight portion 22D can be integrally connected to the first rounded portion 22A and the second rounded portion 22C, respectively.

[0196] One end of the first straight portion 22B may be connected to one of the second island portions 21 (e.g., the second island portion 21 illustrated on the right side of FIG. 11) via one of the first round portions 22A, one of the second straight portions 22D, and one of the second round portions 22C, which are curved in a clockwise direction as shown in FIG. 11. The other end of the first straight portion 22B may be connected to another of the second island portions 21 (e.g., the second island portion 21 illustrated on the left side of FIG. 11) via another of the first round portions 22A, one of the second straight portions 22D, and one of the second round portions 22C, which are curved in a counterclockwise direction as shown in FIG. 11.

[0197] The second straight portion 22D may have a straight shape. The second straight portion 22D may have a second width w2 and a third length L3. The third length L3 may be shorter than the second length L2.

[0198] Each second round portion 22C may have a generally arcuate shape. For example, each second round portion 22C may have a shape of an arc having a central angle of a fourth angle θ4. The fourth angle θ4 may be smaller than the third angle θ3. In some embodiments, the fourth angle θ4 may be an acute angle.

[0199] The radius of curvature R2 of the second round portion 22C is the radius of an imaginary circle passing through a point that is 1 / 2 the width of the second round portion 22C. In some embodiments, the center C4 of the imaginary circle may be located on the second island portion 21, but the present invention is not limited thereto.

[0200] The radius of curvature R2 of the second round portion 22C can be the same as or smaller than the radius of curvature R1 of the first round portion 22A (R2≦R1). In one embodiment, FIG. 11 illustrates the case where R2<R1. The width of the second round portion 22C can be substantially the same as the width of the first round portion 22A, the width of the first straight portion 22B, and the width of the second straight portion 22D. For example, the width of the second round portion 22C can be the second width w2.

[0201] The second bridge portion 22 can be located in a gap (gap portion), for example, a second distance BS2, between two adjacent second island portions 21 that the second bridge portion 22 connects. The length LT2 occupied by the second bridge portion 22 along the direction intersecting the aforementioned second distance BS2 can be greater than the width Wi2 of the second island portion 21. The length LT2 occupied by the second bridge portion 22 indicates the straight-line distance between the outermost edges of the second bridge portion 22 measured in the direction intersecting the second distance BS2. The length LT2 occupied by the second bridge portion 22 can be longer than the length LT1 occupied by the first bridge portion 12 described above with reference to FIG. 9. In some embodiments, the length LT2 occupied by the second bridge portion 22 can be greater than the width Wi2 of the second island portion 21 and smaller than the sum of the width Wi2 of the second island portion 21 and the second distance BS2 (Wi2<LT2<Wi2+BS2).

[0202] FIG. 12 is a plan view schematically showing a display area of a display device according to an embodiment of the present invention.

[0203] According to the embodiment described above with reference to Figures 8 and 10, each of the first bridge portions 12 is connected to the first island portion 11 at a position adjacent to each corner of the first island portion 11, but the present invention is not limited thereto. With reference to the embodiment of Figure 12, each of the first bridge portions 12 may be connected to a center portion of each side of the first island portion 11. With reference to Figure 12, the shape of the first bridge portion 12 may be substantially the same as the shape of the second bridge portion 22 described above with reference to Figure 11, but the size and area thereof may be different from each other.

[0204] FIG. 13A is a plan view showing an excerpt of a display area of ​​a display device according to an embodiment of the present invention.

[0205] According to the embodiment described above with reference to Figs. 8 and 10, the first bridge portion 12 is illustrated as having a constant width, for example, the first width w1, but the present invention is not limited thereto. According to the embodiment of Fig. 13A, the first bridge portion 12 may have locally different widths. For example, the straight portion 12B of the first bridge portion 12 has a first width w1, and the width wa of the first round portion 12A and / or the width wc of the second round portion 12C may be different from the first width w1 of the straight portion 12B. For example, the width wa of the first round portion 12A and / or the width wc of the second round portion 12C of the first bridge portion 12 may be wider than the first width w1 of the straight portion 12B.

[0206] The first bridge portion 12 connected to the first island portion 11 may have both sides smoothly connected to the sides of the first island portion 11 adjacent to each other.

[0207] For example, although any one of the first bridge portions 12 is connected to a corner between the first edge 11E1 and the second edge 11E2 of the first island portion 11, the first edge 12CE1 of the second round portion 12C of the first bridge portion 12 may be smoothly connected to the first edge 11E1 of the first island portion 11, and the second edge 12CE2 of the second round portion 12C may be smoothly connected to the second edge 11E2 of the first island portion 11. The edge of the second round portion 12C being smoothly connected to the edge of the first island portion 11 may indicate that the angle between the edge (the tip of the edge) of the second round portion 12C and the edge of the first island portion 11 is greater than 90°.

[0208] Similarly, another first bridge portion 12 is connected to a corner between the second edge 11E2 and the third edge 11E3 of the first island portion 11, but the first edge 12CE1 of the second round portion 12C of the first bridge portion 12 may be smoothly connected to the second edge 11E2 of the first island portion 11, and the second edge 12CE2 of the second round portion 12C may be smoothly connected to the third edge 11E3 of the first island portion 11. Still another first bridge portion 12 is connected to a corner between the third edge 11E3 and the fourth edge 11E4 of the first island portion 11, but the first edge 12CE1 of the second round portion 12C of the first bridge portion 12 may be smoothly connected to the third edge 11E3 of the first island portion 11, and the second edge 12CE2 of the second round portion 12C may be smoothly connected to the fourth edge 11E4 of the first island portion 11. Furthermore, another first bridge portion 12 is connected to the corner between the fourth edge 11E4 and the first edge 11E1 of the first island portion 11, so that the first edge 12CE1 of the second round portion 12C in the above-mentioned first bridge portion 12 can be smoothly connected to the fourth edge 11E4 of the first island portion 11, and the second edge 12CE2 of the second round portion 12C can be smoothly connected to the first edge 11E1 of the first island portion 11.

[0209] FIG. 13B is a plan view illustrating a first round portion of a first bridge part of a display device according to an embodiment of the present invention.

[0210] 13B, the inner edge 12AEi of the first round portion 12A of the first bridge portion 12 may have a zigzag uneven shape rather than a smooth curve. In one embodiment, the outer edge (12AEo) of the first round portion 12A of the first bridge portion 12 may have a smooth curve. Therefore, the width of the first round portion 12A of the first bridge portion 12 may not be constant. For example, the width of the first round portion 12A of the first bridge portion 12 may repeatedly increase and decrease. Through the shape of the inner edge 12AEi of the first round portion 12A having a zigzag uneven shape, stress concentrated on the inner edge 12AEi may be dispersed.

[0211] FIG. 14 is an enlarged plan view of a first island portion of a display device according to an embodiment of the present invention, and FIG. 15 is a cross-sectional view taken along line XV-XV' of FIG.

[0212] 14 and 15, a substrate 100 corresponding to a first island portion 11 may include a first base layer 101, a first barrier layer 102, a second base layer 103, and a second barrier layer 104. The first base layer 101 and the second base layer 103 may each include a polymer resin such as polyethersulfone, polyarylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polycarbonate, cellulose triacetate, or cellulose acetate propionate. The first barrier layer 102 and the second barrier layer 104 may each include an inorganic insulator such as silicon oxide, silicon nitride, or silicon oxynitride.

[0213] The size or area of ​​the inorganic insulating layer disposed on the uppermost layer of the substrate 100, for example, the second barrier layer 104, may be smaller than the size or area of ​​the first island portion 11 shown in Fig. 14. Referring to Fig. 15, the size or area of ​​the inorganic insulating layer disposed on the uppermost layer of the substrate 100, for example, the second barrier layer 104, may be smaller than the size or area of ​​the first base layer 101, the first barrier layer 102 and / or the second base layer 103 of the substrate 100 corresponding to the first island portion 11.

[0214] 14, the edge of the second barrier layer 104 may be spaced inwardly from the edge of the first island portion 11 by a first separation distance ds1 (first separation distance ds1). In other words, as shown in FIG 15, the edge of the second barrier layer 104 may be spaced from the edge of the first base layer 101, the first barrier layer 102 and / or the second base layer 103 by a first separation distance ds1.

[0215] 14, near the corner of the first island portion 11 to which the first bridge portion 12 is connected, the edge of the second barrier layer 104 may be spaced inwardly from the edge of the first island portion 11 by a second separation distance ds2. The second separation distance ds2 may be greater than the first separation distance ds1.

[0216] Due to the difference between the first separation distance ds1 and the second separation distance ds2, a planar bend ST is located on a plane as shown in FIG. 14, and the bend ST can be located between a first bridge portion 12 and another adjacent first bridge portion 12.

[0217] 15, a buffer layer 111 may be disposed on a substrate 100, and a pixel driving circuit unit PC may be disposed on the buffer layer 111. The buffer layer 111 may include an inorganic insulator such as silicon oxide, silicon nitride, or silicon oxynitride.

[0218] The thin film transistor TFT may include a semiconductor layer Act, a gate electrode GE, a source electrode SE, and a drain electrode DE. Although Fig. 15 illustrates a top-gate type in which the gate electrode GE is disposed on the semiconductor layer Act with a gate insulating layer 113 sandwiched therebetween, according to other embodiments, the thin film transistor TFT may be a bottom-gate type.

[0219] The semiconductor layer Act may include polysilicon. Alternatively, the semiconductor layer Act may include amorphous silicon, an oxide semiconductor, or an organic semiconductor. The gate electrode GE may include a low-resistance metal material. The gate electrode GE may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), and may be formed as a multilayer or single layer including the above materials.

[0220] The gate insulating layer 113 between the semiconductor layer Act and the gate electrode GE may include an inorganic insulator such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, titanium oxide, etc. The gate insulating layer 113 may be a single layer or a multilayer including the above-mentioned materials.

[0221] The source electrode SE and the drain electrode DE may be located on the same layer, for example, the second interlayer insulating layer 117, and may include the same material. The source electrode SE and the drain electrode DE may include a material having good conductivity. The source electrode SE and the drain electrode DE may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be formed as a multi-layer or single layer including the above-mentioned materials. In one embodiment, the source electrode SE and the drain electrode DE may be formed as a multi-layer structure of a titanium layer, an aluminum layer, and a titanium layer (Ti / Al / Ti). The second interlayer insulating layer 117 may also include an inorganic insulator such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or titanium oxide, and may be a single layer or multiple layers including the above-mentioned materials.

[0222] The storage capacitor Cst may include a first electrode CE1 and a second electrode CE2 overlapping with a first interlayer insulating layer 115 interposed therebetween. The storage capacitor Cst may overlap with a thin film transistor TFT. In this regard, FIG. 15 illustrates that a gate electrode GE of the thin film transistor TFT is the first electrode CE1 of the storage capacitor Cst. In another embodiment, the storage capacitor Cst may not overlap with the thin film transistor TFT. The storage capacitor Cst may be covered with a second interlayer insulating layer 117. The second electrode CE2 of the storage capacitor Cst may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be formed as a multilayer or single layer including the above materials. The first interlayer insulating layer 115 may be disposed between the gate insulating layer 113 and the second interlayer insulating layer 117. The first interlayer insulating layer 115 may also include an inorganic insulator such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, or titanium oxide, and may be a single layer or multiple layers including the foregoing materials.

[0223] The size or area of ​​the inorganic insulator layer IOL corresponding to the first island portion 11 is smaller than the size or area of ​​the first island portion 11 as shown in Fig. 14. Referring to Fig. 15, the size or area of ​​the inorganic insulator layer IOL disposed on the substrate 100 may be smaller than the size or area of ​​the first base layer 101, the first barrier layer 102 and / or the second base layer 103 of the substrate 100. The inorganic insulator layer IOL on the substrate 100 may include, for example, a buffer layer 111, a gate insulating layer 113, a first interlayer insulating layer 115 and a second interlayer insulating layer 117.

[0224] 14, an edge of the inorganic insulator layer IOL may be spaced inward from an edge of the first island portion 11 by a third separation distance ds3. In other words, as shown in FIG. 15, an edge of the inorganic insulator layer IOL may be spaced inward from an edge of the first base layer 101, the first barrier layer 102, and / or the second base layer 103 of the substrate 100 by a third separation distance ds3. An edge of the first base layer 101, the first barrier layer 102, and / or the second base layer 103 provided on the substrate 100 corresponding to the first island portion 11 may correspond to an edge of the first island portion 11.

[0225] 14, near the corner of the first island portion 11 to which the first bridge portion 12 is connected, the edge of the inorganic insulator layer IOL may be spaced inward from the edge of the first island portion 11 by a fourth separation distance ds4. The fourth separation distance ds4 may be greater than the third separation distance ds3.

[0226] The third separation distance ds3 may be greater than the first separation distance ds1. The fourth separation distance ds4 may be greater than the second separation distance ds2. In other words, as shown in FIG. 15, the edge of the inorganic insulator layer IOL may be located on the top surface of the second base layer 103 without passing the edge of the second base layer 103.

[0227] An edge of the inorganic insulating layer IOL and an edge of the second barrier layer 104 may be overlapped (superimposed) on the organic layer OL. The organic layer OL may have a kind of frame shape including an opening corresponding to the center part of the first island portion 11 and extending along the edge of the first island portion 11.

[0228] The organic layer OL may cover an edge of the inorganic insulator layer IOL having a step with respect to the upper surface of the second barrier layer 104 of the substrate 100, and an edge of the second barrier layer 104. The organic layer OL may include an organic insulator such as polyimide.

[0229] The first organic insulating layer 119 may be disposed on the second interlayer insulating layer 117, and the second organic insulating layer 121 may be disposed on the first organic insulating layer 119. The first organic insulating layer 119 and the second organic insulating layer 121 may each include an organic insulator such as polyimide.

[0230] The second voltage line VSSL may be disposed on the second organic insulating layer 121, and the third organic insulating layer 123 may be disposed on the second organic insulating layer 121. The third organic insulating layer 123 may include an organic insulator such as polyimide. The second voltage line VSSL may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be formed as a multi-layer or single layer including the above materials.

[0231] The first electrode pad 241 and the second electrode pad 242 may be disposed on the third organic insulating layer 123. The first electrode pad 241 may be electrically connected to the thin film transistor TFT via a first connecting piece CM1 between the first organic insulating layer 119 and the second organic insulating layer 121 and a second connecting piece CM2 between the second organic insulating layer 121 and the third organic insulating layer 123. The inorganic light emitting diode 230 on the first electrode pad 241 and the second electrode pad 242 is as described above with reference to FIG. 7B. The light emitting diode, for example, the inorganic light emitting diode 230, is protected by the encapsulation layer 300, which may include an inorganic encapsulation layer and / or an organic encapsulation layer, or may include an organic material such as a resin. Although FIG. 15 illustrates the light emitting diode being the inorganic light emitting diode 230 described with reference to FIG. 7B, in other embodiments, the light emitting diode may be the organic light emitting diode 220 described with reference to FIG. 7A.

[0232] 16A and 16B are plan views showing the layout of wiring on a first bridge portion of a display device according to an embodiment of the present invention.

[0233] 16A, the wiring WL is disposed on the first bridge portion 12, but may be biased toward the outer edge 12Eo of the first bridge portion 12. For example, a fifth separation distance ds5 from the inner edge 12Ei of the first bridge portion 12 to the wiring WL may be longer than a sixth separation distance ds6 from the outer edge 12Eo of the first bridge portion 12 to the wiring WL.

[0234] 16B, when a plurality of wirings, for example, the first wiring WL1, the second wiring WL2, and the third wiring WL3, are disposed on the first bridge portion 12, they may be biased toward the outer edge 12Eo of the first bridge portion 12. For example, a fifth separation distance ds5' from the third wiring WL3, which is closest to the inner edge 12Ei of the first bridge portion 12, to the inner edge 12Ei of the first bridge portion 12 may be longer than a sixth separation distance ds6' from the first wiring WL1, which is closest to the outer edge 12Eo of the first bridge portion 12, to the outer edge 12Eo of the first bridge portion 12.

[0235] A display device according to an embodiment may include any one structure selected from the structure of FIG. 16A and the structure of FIG. 16B. A display device according to another embodiment may include both the structure of FIG. 16A and the structure of FIG. 16B. For example, the wiring WL illustrated in FIG. 16A may be interposed between the second organic insulating layer 121 and the third organic insulating layer 123 described with reference to FIG. 15. And, the first wiring WL1, the second wiring WL2, and the third wiring WL3 illustrated in FIG. 16B may be interposed between the first organic insulating layer 119 and the second organic insulating layer 121 described with reference to FIG. 15. In other words, the wiring WL of FIG. 16A and the first wiring WL1, the second wiring WL2, and the third wiring WL3 of FIG. 16B may be electrically connected to the same pixel driving circuit unit PC (FIG. 15) although they are arranged on different layers. In one embodiment, the line WL in FIG. 16A is the second voltage line VSSL (FIG. 15), and the first line WL1, the second line WL2 and the third line WL3 may also be data lines or scan lines that provide data signals to the first island portion 11.

[0236] The display device 1 according to the above-described embodiment can be used in various electronic devices capable of providing images. Here, the electronic device refers to a device that uses electricity and can provide a predetermined image.

[0237] 17A to 17G are perspective views each showing a schematic embodiment of an electronic device including a display device according to an embodiment of the present invention.

[0238] 17A, a display device according to an embodiment of the present invention may be used in a wearable electronic device 3100 that can be worn on a part of a user's body. The wearable electronic device 3100 may include a body part 3110 and a display part 3120 provided on the body part 3110. A display device according to an embodiment of the present invention may be used as the display part 3120 of the wearable electronic device 3100. The wearable electronic device 3100 illustrated in FIG. 17A may be modified. In one embodiment, the wearable electronic device 3100 may be used as a smart watch or a smartphone at the user's choice.

[0239] FIG. 17B illustrates a medical electronic device 3200. In one embodiment, the medical electronic device 3200 may include a body portion 3210 and a light emitting portion 3220. A display device according to an embodiment of the present invention may be used as the light emitting portion 3220 of the medical electronic device 3200. The light emitting portion 3220 may emit light in a certain wavelength band (e.g., infrared light, visible light, etc.) to the patient's body. In one embodiment, the body portion 3210 may have a stretchable fiber material, and the light emitting portion 3220 may have a structure that can be worn on the user's body.

[0240] FIG. 17C illustrates an educational electronic device 3300. In one embodiment, the educational electronic device 3300 may include a display unit 3320 provided in a frame 3310. The display unit 3320 may use a display device according to an embodiment of the present invention. Images such as a rolling sea, a snow-covered mountain, or a volcano with lava flowing may be provided through the display unit 3320, and the display unit 3320 may be extended in a height direction (e.g., z direction) to reflect the height of the wave, mountain, or volcano. In some embodiments, the height of a portion of the display unit 3320 may be sequentially changed along the direction in which the lava flows, thereby showing the movement of the lava in three dimensions. The educational electronic device 3300 may include a plurality of pins (or stroke units) 3330 arranged on the rear surface of the display unit 3320 so that the display unit 3320 can be extended in a height direction. As the pin 3330 moves along a third direction (e.g., z direction or −z direction), the image displayed by the display unit 3320 may be embodied to have a three-dimensional height. Although Fig. 17C describes the educational electronic device 3300, it does not limit its use as long as it provides predetermined image information.

[0241] 17A to 17C are described as electronic devices whose shapes are variable, but the present invention is not limited thereto. As in the embodiments described below, the display device according to the present invention may be used in electronic devices whose parts capable of displaying images (e.g., screens) are fixed.

[0242] 17D illustrates a robot 3400 as an electronic device according to an embodiment of the present invention. The robot 3400 can move and recognize objects using a camera unit 3440, and can display a predetermined image to a user via display units 3420 and 3430. In some embodiments, the display device according to an embodiment of the present invention is incorporated into a body frame having a hemispherical shape so that it can extend in various directions as described above, and therefore the robot 3400 can include hemispherical display units 3420 and 3430.

[0243] 17E illustrates a vehicle display device 3500 as an electronic device according to an embodiment of the present invention. The vehicle display device 3500 may include a cluster 3510, a center information display (CID) 3520, and / or a co-driver display. The display device according to the embodiment of the present invention may extend in various directions and therefore may be used in the cluster 3510, the CID 3520, and / or the co-driver display regardless of the shape of the vehicle's internal frame.

[0244] 17E illustrates the cluster 3510, the CID 3520, and / or the co-driver display as being separate from one another, the invention is not so limited, in other embodiments, selected two or more of the cluster 3510, the CID 3520, and the co-driver display may be coupled together.

[0245] In some embodiments, the vehicle display device 3500 may include a button 3540 that may display a predetermined image. Referring to the enlarged view of FIG. 17E, the hemispherical button 3540 may include an object 3542 that provides the sensation of using the button 3540 as it moves in the z direction or the -z direction, and a display device disposed on the object 3542. In some embodiments, when the object 3542 has a three-dimensionally curved surface, the display device may also have a three-dimensionally curved surface.

[0246] FIG 17F illustrates an electronic device according to an embodiment of the present invention that is an advertising or display electronic device 3600. In some embodiments, the advertising or display electronic device 3600 may be mounted on a structure 3610 that is fixed with a wall or a pillar. If the structure 3610 includes an uneven surface as illustrated in FIG 17F, the advertising or display electronic device 3600 may also be positioned along the uneven surface of the structure 3610. In some embodiments, the advertising or display electronic device 3600 may be mounted on the structure 3610 using a heat shrink film or the like.

[0247] 17G illustrates an electronic device according to an embodiment of the present invention as a controller 3700. The controller 3700 may include image-type buttons. For example, the controller 3700 may include a first button area 3720, a second button area 3730, and a third button area 3740 that are protruded in the z direction or protruded in the -z direction (or recessed in the z direction) from a portion of a display unit 3710. In some embodiments, the first button area 3720 and the third button area 3740 may protrude in the z direction, and the second button area 3730 may protrude in the -z direction (or recessed in the z direction).

[0248] Although the present invention has been described with reference to the embodiments shown in the drawings, they are merely illustrative, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical spirit of the claims.

[0249] According to one preferred embodiment, the following is true:

[0250] The background and issues of this case are as follows (i) to (v). (i) Stretchable display panels that have elasticity for use in wristband-type wearable displays and the like are being investigated (Patent Documents 1 to 3).

[0251] (ii) In order to provide elasticity, the following structure has been considered: (ii-1) On a base substrate (100) made of elastomer resin or the like, small pixel sections (island sections 11) each including a pixel circuit and a light-emitting section are arranged in a matrix with spaces therebetween. (ii-2) In each gap between the pixel portions (island portions 11), a connecting portion (bridge portion 12) having a circular wave shape (Patent Document 1) or an Ω shape (Patent Documents 2 to 3) including metal wiring is arranged so as to connect the small piece-like pixel portions (island portions 11) vertically and horizontally.

[0252] (iii) In Patent Documents 1 to 3, pixel portions (island portions 11) and connecting portions (bridge portions 12) are uniformly provided with the same size and shape over the entire display panel.

[0253] (iv) In such a case, there may arise a case where the elasticity is locally insufficient or, conversely, locally excessive. (v) Furthermore, in order to arrange connecting portions (bridge portions 12) in a rounded wave shape (Patent Document 1) or an Ω shape (Patent Documents 2 to 3), the distance between the small piece-like pixel portions (island portions 11) cannot be made very small, which can make it difficult to increase the area proportion of the pixel portions (island portions 11).

[0254] Therefore, according to a particularly preferred embodiment, any combination of the following A1 to A3 or the following A1 to A10 is used.

[0255] A1 Even in the peripheral non-display area (NDA), small piece-like drive circuit sections (island sections 12) are connected lengthwise and widthwise by connecting sections (bridge sections 22).

[0256] A2 The size (length and width dimensions of the arrangement area, wiring width, etc.) of the small piece-like driving circuit section (island section 12) and its connecting section (bridge section 22) is made larger than the size of the small piece-like pixel section (island section 11) and its connecting section (bridge section 12) in the image display area (DA). In this way, the stretchability is increased on the inside of the periphery of the display panel. Similarly, it is possible to make a push button area within a display area more flexible than other areas.

[0257] A3 In particular, the small piece-like driving circuit section (island section 12) on the periphery and its connecting section (bridge section 22) can be arranged so that one on the periphery corresponds to two to four on the inside of the small piece-like pixel section (island section 11) and its connecting section (bridge section 12). That is, one small piece-like driving circuit section (island section 12) on the periphery can be connected to two small piece-like pixel sections (island section 11) on the inside.

[0258] A4 The connecting portion (bridge portion 12, 22) has a planar structure folded into an S-shape, etc., to reduce the layout area. In this way, the width of the island portions 11, 12 can be made approximately the same as or smaller than the distance between the island portions 11, 12 (for example, 0.3 to 0.9 times, 0.4 to 0.9 times, or 0.4 to 0.8 times).

[0259] A5 The area ratio of the island portions 11 and 12 can be made higher at the periphery than at the inside.

[0260] A6 In a preferred embodiment, the connecting portions (bridge portions 13) that connect the island portions 12 in the peripheral portion and the island portions 11 in the inner display area can be S-shaped, including a straight line portion in the center and arc portions connecting to both ends of the straight line portion.

[0261] A7 The S-shaped arc portion may be a semicircle. For example, the central angle may be 120 to 160 degrees.

[0262] A8 A curved portion (direction change portion) equivalent to a quarter arc (for example, a central angle of 60 to 80°) can be interposed between the S-shaped arc portion and the island portions 11 and 12. Furthermore, a short straight portion can be interposed between the curved portion (direction change portion) and the S-shaped arc portion.

[0263] A9 The connecting portion (third bridge portion 23) in the boundary region that connects the small pixel portion (island portion 11) and the small driving circuit portion (island portion 12) in the peripheral portion can have a different shape and size.

[0264] A10 In particular, the connecting portion (third bridge portion 23) in the boundary region is curved in a crank shape, and the thickness of the wiring is made the same as or similar to that of the small piece-shaped drive circuit portion (island portion 12). Furthermore, when two extend from one small piece-like driving circuit section (island section 12), they can be arranged line-symmetrically to each other. [Explanation of symbols]

[0265] 11 Island No. 1 12 First Bridge Section 21 2nd Island Section 22 Second Bridge Section

Claims

1. 1. A display device including a display area and a non-display area outside the display area, a first island portion disposed in the display area and spaced apart from each other along a row direction and a column direction; a first bridge portion connecting adjacent first island portions among the first island portions; second islands disposed in the non-display area and spaced apart from each other; and second bridge portions connecting adjacent ones of the second island portions, a first width of each of the first islands is narrower than a second width of each of the second islands; A display device, wherein any one of the second island portions corresponds to a first island portion arranged in an i-th row and a first island portion arranged in an (i+1)-th row (where i is a positive integer).

2. Any one of the second island portions includes:

2. The display device of claim 1, wherein a connecting bridge portion connects one of the first island portions arranged in the i-th row and one of the first island portions arranged in the (i+1)-th row.

3. The display device according to claim 2 , wherein the extension ratio of the non-display area is smaller than the extension ratio of the display area.

4. The non-display area is a first sub-non-display region in which the second island portion and the second bridge portion are arranged; a second non-display sub-area located between a first non-display sub-area and the display area, the second non-display sub-area having the connecting bridge portion disposed therein; The display device according to claim 2 , wherein an elongation ratio of the first non-display sub-region and an elongation ratio of the second non-display sub-region are different from each other.

5. The display device according to claim 4 , wherein an elongation ratio of the second non-display sub-region is smaller than an elongation ratio of the first non-display sub-region and an elongation ratio of the display region.

6. The display device according to claim 4 , wherein an elongation ratio of the second non-display sub-region is greater than an elongation ratio of the first non-display sub-region and is smaller than an elongation ratio of the display region.

7. Each of the first bridge portions is disposed between two adjacent first island portions, and each of the second bridge portions is disposed between two adjacent second island portions; The display device of claim 1 , wherein a first distance between the two adjacent first islands is shorter than a second distance between the two adjacent second islands.

8. The display device of claim 7 , wherein a ratio of the first distance to the first width in the first island portion is greater than a ratio of the second distance to the second width in the second island portion.

9. The display device of claim 1 , wherein a width of each of the first bridge portions is narrower than a width of each of the second bridge portions.

10. The display device according to claim 1 , wherein the first bridge portion and the second bridge portion each have a serpentine shape.

11. Each of the first bridge portions is Two first rounds and The display device according to claim 10 , further comprising: a straight portion between the two first round portions.

12. The straight portion of each of the first bridge portions is The display device according to claim 11 , wherein the first island portion is disposed obliquely with respect to one side of the first island portion adjacent to the first island portion with the linear portion interposed therebetween.

13. The display device according to claim 11 , wherein each of the two first round portions is an arc having a first central angle, and the first central angle is an oblique angle.

14. Each of the first bridge portions is The display device according to claim 13 , further comprising two second round portions respectively connected to the two first round portions.

15. The display device according to claim 14 , wherein each of the two second round portions is an arc having a second central angle, the second central angle being smaller than the first central angle.

16. The display device of claim 11 , wherein the two first rounded portions in each of the first bridge portions each include an inner edge and an outer edge, and the inner edge has an unevenness.

17. The display device of claim 10 , wherein each of the second bridge portions has a different shape than each of the first bridge portions.

18. Each of the second bridge portions is Two first rounds and a first straight portion between the two first round portions; two second straight sections respectively connected to the two first round sections; The display device according to claim 10 , further comprising: two second round portions connected to the two second straight portions, respectively.

19. The display device according to claim 18 , wherein a length of the first straight portion in each of the second bridge portions is longer than a length of the second straight portion.

20. each of the two first round portions in each of the second bridge portions has an arc shape having a first central angle; each of the two second round portions in each of the second bridge portions has an arc shape having a second central angle; The display device of claim 18 , wherein the first central angle is greater than the second central angle.

21. Each of the first islands includes an inorganic insulating layer including an inorganic insulator, The display device of claim 1 , wherein an edge of the inorganic insulating layer is spaced apart from an edge of each of the first islands.

22. Further comprising a substrate under the inorganic insulating layer; The substrate includes a base layer including a polymer resin, and a barrier layer disposed on the base layer and including an inorganic insulator; The display device of claim 21 , wherein an edge of the barrier layer is spaced apart from an edge of each of the first islands.

23. The display device according to claim 22 , wherein the inorganic insulating layer and the barrier layer of the substrate form a step.

24. The display device of claim 23 , further comprising an organic layer covering an edge of the barrier layer and an edge of the inorganic insulating layer and overlapping the step.

25. Each of the first islands is A transistor; a light emitting diode electrically coupled to the transistor; a part of a wiring electrically connected to a transistor in any one of the first island parts among the first island parts is disposed on a first bridge part connected to the any one of the first island parts; The display device of claim 1 , wherein a first separation distance from an inner edge of the first bridge portion to the wiring is longer than a second separation distance from an outer edge of the first bridge portion to the wiring.

26. 1. A display device including a display area and a non-display area outside the display area, First island portions disposed in the display area and spaced apart from each other along row and column directions, and first bridge portions connecting adjacent first island portions among the first island portions; second islands disposed in the non-display area and spaced apart from each other; and second bridge portions connecting adjacent ones of the second island portions, A display device, wherein the second bridge portions have a different shape from the first bridge portions.

27. the first bridge portion and the second bridge portion each have a serpentine shape, 27. The display device of claim 26, wherein a width of each of the second bridge portions is greater than a width of each of the first bridge portions.

28. The display device according to claim 26, wherein the stretch ratio of the non-display area is smaller than the stretch ratio of the display area.

29. a first width of each of the first islands is narrower than a second width of each of the second islands; 27. The display device of claim 26, wherein any one of the second island portions corresponds to a first island portion arranged in an i-th row and a first island portion arranged in an (i+1)-th row, where i is a positive integer.

30. 30. The display device of claim 29, further comprising a third bridge portion connecting any one of the second island portions to the first island portion arranged in the i-th row and connecting any one of the second island portions to the first island portion arranged in the (i+1)th row.

31. Each of the first bridge portions is disposed between two adjacent first island portions, and each of the second bridge portions is disposed between two adjacent second island portions; 30. The display device of claim 29, wherein a first distance between two adjacent first islands is less than a second distance between two adjacent second islands.

32. 32. The display device of claim 31, wherein a ratio of the first distance to the first width in the first island portion is greater than a ratio of the second distance to the second width in the second island portion.

33. Each of the first bridge portions is Two first rounds and 27. The display device of claim 26, further comprising a straight portion between the two first round portions.

34. The straight portion of each of the first bridge portions is The display device according to claim 33 , wherein the first island portion is disposed obliquely with respect to one side of the first island portion adjacent to the first island portion with the straight portion interposed therebetween.

35. The display device of claim 33 , wherein each of the two first rounded portions is an arc having a first central angle, the first central angle being a reflex angle.

36. Each of the first bridge portions is further comprising two second round portions connected to each of the two first round portions, The display device according to claim 35 , wherein each of the two second rounded portions is an arc having a second central angle, the second central angle being smaller than the first central angle.

37. 34. The display device of claim 33, wherein the two first rounded portions of each of the first bridge portions each include an inner edge and an outer edge, the inner edge having an irregularity.

38. Each of the second bridge portions is Two first rounds and a first straight portion between the two first round portions; two second straight sections respectively connected to the two first round sections; and two second round portions connected to the two second straight portions, respectively.

39. The display device of claim 38 , wherein a length of the first straight portion in each of the second bridge portions is longer than a length of the second straight portion.

40. each of the two first round portions in each of the second bridge portions has an arc shape having a first central angle; Each of the two second round portions of each of the second bridge portions is an arc having a second central angle; The display device of claim 38 , wherein the first central angle is greater than the second central angle.

41. Each of the first islands includes an inorganic insulating layer including an inorganic insulator, The display device of claim 26 , wherein an edge of the inorganic insulating layer is spaced apart from an edge of each of the first islands.

42. Further comprising a substrate under the inorganic insulating layer; The substrate includes a base layer including a polymer resin, and a barrier layer including an inorganic insulator disposed on the base layer; 42. The display of claim 41, wherein an edge of the barrier layer is spaced apart from an edge of each of the first islands.

43. The display device according to claim 42 , wherein the inorganic insulating layer and the barrier layer of the substrate form a step.

44. The display device of claim 43 , further comprising an organic layer covering an edge of the barrier layer and an edge of the inorganic insulating layer and overlapping the step.

45. Each of the first islands is A transistor; a light emitting diode electrically coupled to the transistor; a part of a wiring electrically connected to a transistor in any one of the first island parts among the first island parts is disposed on a first bridge part connected to the any one of the first island parts; 27. The display device of claim 26, wherein a first separation distance from an inner edge of the first bridge portion to the wiring is longer than a second separation distance from an outer edge of the first bridge portion to the wiring.

Images