Display device and electronic apparatus including same

Abstract

This display device comprises: a 1-1 electrode pad and a 1-2 electrode pad; a second electrode pad spaced apart from the 1-1 electrode pad and the 1-2 electrode pad, and including a first section, a second section adjacent to the first section in a first direction, and a connecting section connecting the first section and the second section; a first light-emitting element electrically connected to the 1-1 electrode pad via a first bump metal and electrically connected to the first section of the second electrode pad via a second bump metal; and a second light-emitting element electrically connected to the 1-2 electrode pad via a third bump metal and electrically connected to the second section of the second electrode pad via the second bump metal, wherein the width of the connecting section in a second direction intersecting the first direction is less thane the width of the first section in the second direction.

Description

Display device and electronic device including the same

[0001] One or more embodiments relate to a display device (e.g., a flexible display device) and an electronic device including the display device.

[0002] As display devices that visually display electrical signals advance, various display devices with excellent characteristics such as thinness, lightness, and low power consumption are being introduced. For example, flexible display devices that can be folded or rolled into a roll shape are being introduced. Recently, research and development on display devices of various structures, such as stretchable display devices that can change into various shapes, is actively underway.

[0003] One or more embodiments provide a display device, such as a flexible display device.

[0004] Additional aspects are some described in the following description, some become obvious from the description, or can be learned by practicing the embodiments presented in this disclosure.

[0005] According to one or more embodiments, a first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction; according to one or more embodiments, a second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction; the second electrode pad comprises: a first portion; a second portion adjacent to the first portion along the first direction; and a first connecting portion connecting the first portion and the second portion; a first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal; and a second light-emitting element electrically connected to the first-2 electrode pad through a third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal, and the first connecting portion in the second direction A display device is disclosed in which the width is smaller than the width of the first part in the second direction.

[0006] The display device further includes a common voltage line electrically connected to the second electrode pad and an insulating layer between the second electrode pad and the common voltage line, and the first connecting portion of the second electrode pad can be electrically connected to the common voltage line through a contact hole in the insulating layer.

[0007] The width of the first portion of the second electrode pad in the first direction may be substantially the same as the width of the first-1 electrode pad in the first direction.

[0008] The first portion of the second electrode pad comprises a first portion relatively close to the first electrode pad and a second portion relatively far from the first electrode pad, and the width of the first portion in the first direction may be smaller than the width of the second portion in the first direction.

[0009] The width of the second portion of the second electrode pad in the first direction may be greater than the width of the first-1 portion in the first direction.

[0010] The second portion of the second electrode pad comprises a second portion 2-1 that is relatively close to the first-2 electrode pad and a second portion 2-2 that is relatively far from the first-2 electrode pad, and the width of the second portion 2-1 in the first direction may be smaller than the width of the second portion 2-2 in the first direction.

[0011] The width in the first direction of the first part of the first-1 electrode pad, which is relatively close to the first part of the second electrode pad, may be smaller than the width in the first direction of the second part of the first-1 electrode pad, which is relatively far from the first part of the second electrode pad.

[0012] The width of the first portion of the first electrode pad in the first direction may be substantially the same as the width of the first portion in the first direction.

[0013] The second bump metal may include gold, nickel, or indium.

[0014] The first bump metal and the third bump metal may each contain the same material as the second bump metal.

[0015] According to one or more embodiments, a display device comprising a display area and a non-display area outside the display area, the display device comprising: a first island portion located in the display area; a first bridge portion connecting the first island portion and another first island portion adjacent to the first island portion; first electrode pads disposed in the first island portion and spaced apart from each other along a first direction; a second electrode pad disposed in the first island portion and spaced apart from the first electrode pads along a second direction intersecting the first direction; -the second electrode pad comprises a first portion, a second portion, and a third portion spaced apart from each other along the first direction; a first connecting portion connecting the first portion and the second portion; and a second connecting portion connecting the second portion and the third portion, and includes light-emitting elements electrically connected to the corresponding first electrode pad among the first electrode pads and the corresponding portion among the first to third portions of the second electrode pad-, the width of the first connecting portion in the second direction and the A display device is disclosed in which the width of the second connecting part in the second direction is smaller than the width of the second part in the second direction.

[0016] The display device further includes a common voltage line electrically connected to the second electrode pad, and the connection point between the second electrode pad and the common voltage line may correspond to at least one of the first connection part and the second connection part of the second electrode pad.

[0017] The first portion of the second electrode pad comprises a first-1 portion relatively close to the first electrode pads; and a first-2 portion relatively far from the first electrode pads; and the width of the first-1 portion in the first direction may be smaller than the width of the first-2 portion in the first direction.

[0018] The width of the second portion of the second electrode pad in the first direction may be greater than the width of the first-1 portion in the first direction.

[0019] The second portion of the second electrode pad comprises a second-1 portion relatively close to the first electrode pads; and a second-2 portion relatively far from the first electrode pads; and the width of the second-1 portion in the first direction may be smaller than the width of the second-2 portion in the first direction.

[0020] Among the first electrode pads, the first electrode pad adjacent to the first portion of the second electrode pad includes a portion relatively close to the first portion of the second electrode pad and a portion relatively far from the first portion of the second electrode pad, and the width in the first direction of the portion relatively close to the first portion of the second electrode pad may be smaller than the width in the first direction of the portion relatively far from the first portion of the second electrode pad.

[0021] The second bump metal may include gold, nickel, or indium.

[0022] According to one or more embodiments, as an electronic device, the electronic device comprises a display device, wherein the display device comprises a first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction, a second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction, a first portion, a second portion adjacent to the first portion along the first direction, and a first connecting portion connecting the first portion and the second portion, a first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal, and a second light-emitting element electrically connected to the first-2 electrode pad through a third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal, and the first connecting portion in the second direction The width may be smaller than the width of the first part in the second direction.

[0023] The above display device further comprises a common voltage line electrically connected to the second electrode pad; and an insulating layer between the second electrode pad and the common voltage line; wherein the first connecting portion of the second electrode pad can be electrically connected to the common voltage line through a contact hole in the insulating layer.

[0024] The first bump metal, the second bump metal, and the third bump metal may each include gold, nickel, or indium.

[0025] According to one or more embodiments, an electronic device comprising a display portion includes the aforementioned display device. The display device corresponds to the display portion of the electronic device, and the electronic device includes a frame that accommodates the display device and a stroke that is accommodated in the frame and disposed below the display device.

[0026] The above display unit can be stretched three-dimensionally.

[0027] The above display unit can be stretched three-dimensionally by the movement of the stroke.

[0028] According to one embodiment, a display device capable of stably maintaining an electrical connection of a light-emitting element and an electronic device including the same may be provided.

[0029] However, these effects are exemplary, and the scope of the present invention is not limited by the effects described above.

[0030] FIG. 1 is a schematic perspective view of a display device according to one embodiment.

[0031] FIGS. 2a and FIGS. 2b are perspective views showing the display device of FIG. 1 extended in a first direction.

[0032] FIG. 2c is a perspective view showing the display device of FIG. 1 extended in a second direction.

[0033] FIG. 2d is a perspective view showing the display device of FIG. 1 extended in the first direction and the second direction.

[0034] FIG. 2e is a perspective view showing the display device of FIG. 1 extended in a third direction.

[0035] FIG. 3 is a schematic plan view of a display device according to one embodiment.

[0036] FIG. 4a is a plan view of part IV of FIG. 3 as a part of a display device according to one embodiment.

[0037] FIG. 4b is a plan view of part IV of FIG. 3 as a part of a display device according to one embodiment.

[0038] FIG. 4c is a plan view of part IV of FIG. 3 as a part of a display device according to one embodiment.

[0039] FIG. 5 is a cross-sectional view schematically showing a first island portion and a first bridge portion disposed in the display area of ​​a display device according to one embodiment.

[0040] FIGS. 6a to 6c are equivalent circuit diagrams of subpixels of a display device according to one embodiment.

[0041] FIG. 7 is a schematic plan view showing the first island portion of a display device according to one embodiment.

[0042] FIG. 8 is a cross-sectional view of a first island portion of a display device according to one embodiment, corresponding to a cross-sectional view along lines VIIIa-VIIIa' and VIIIb-VIIIb' of FIG. 7.

[0043] FIG. 9 is a plan view showing the first and second electrode pads and light-emitting diodes arranged in the first island portion of a display device according to one embodiment.

[0044] FIG. 10 is a plan view showing first and second electrode pads and light-emitting diodes arranged in the first island portion of a display device according to another embodiment.

[0045] FIG. 11 is a plan view showing first and second electrode pads and light-emitting diodes arranged in a first island portion of a display device according to another embodiment.

[0046] FIG. 12 is a plan view showing first and second electrode pads and light-emitting diodes arranged in the first island portion of a display device according to another embodiment.

[0047] FIGS. 13a to 13g are schematic perspective views illustrating embodiments of an electronic device including a display device.

[0048] According to one or more embodiments, a first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction, a second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction, the second electrode pad comprises: a first portion, a second portion adjacent to the first portion along the first direction, and a first connecting portion connecting the first portion and the second portion; a first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal, and a second light-emitting element electrically connected to the first-2 electrode pad through a third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal, and the width of the first connecting portion in the second direction is such that in the second direction A display device smaller than the width of the first part is disclosed.

[0049] According to one or more embodiments, a display device comprising a display area and a non-display area outside the display area, the display device comprising: a first island portion located in the display area; a first bridge portion connecting the first island portion and another first island portion adjacent to the first island portion; first electrode pads disposed in the first island portion and spaced apart from each other along a first direction; a second electrode pad disposed in the first island portion and spaced apart from the first electrode pads along a second direction intersecting the first direction; -the second electrode pad comprises a first portion, a second portion, and a third portion spaced apart from each other along the first direction; a first connecting portion connecting the first portion and the second portion; and a second connecting portion connecting the second portion and the third portion, and includes light-emitting elements electrically connected to the corresponding first electrode pad among the first electrode pads and the corresponding portion among the first to third portions of the second electrode pad-, the width of the first connecting portion in the second direction and the A display device is disclosed in which the width of the second connecting part in the second direction is smaller than the width of the second part in the second direction.

[0050] According to one or more embodiments, as an electronic device, the electronic device comprises a display device, wherein the display device comprises a first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction, a second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction, a first portion, a second portion adjacent to the first portion along the first direction, and a first connecting portion connecting the first portion and the second portion, a first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal, and a second light-emitting element electrically connected to the first-2 electrode pad through a third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal, and the first connecting portion in the second direction The width may be smaller than the width of the first part in the second direction.

[0051] According to one or more embodiments, an electronic device comprising a display portion includes the aforementioned display device. The display device corresponds to the display portion of the electronic device, and the electronic device includes a frame that accommodates the display device and a stroke that is accommodated in the frame and disposed below the display device.

[0052] Refer to the embodiments illustrated in the accompanying drawings in detail, where the same reference numerals in the drawings refer to the same elements throughout. In this regard, the embodiments may take other forms and should not be interpreted as being limited to the descriptions presented herein. Accordingly, embodiments are described below with reference to the drawings to explain aspects of the specification. The term "and / or" as used herein includes any combination of one or more of the related listed items. Throughout the invention, the expression "at least one of a, b and c" indicates only a, only b, only c, both a and b, both a and c, both b and c, all a, b and c, or variations thereof.

[0053] Since the present invention allows for various modifications and numerous embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and the methods for achieving them will become apparent by referring to the embodiments and drawings described in detail below. However, the present invention may be embodied in various forms and should not be interpreted as being limited to the embodiments presented herein.

[0054] The present invention will be described in more detail with reference to the accompanying drawings, in which embodiments of the invention are illustrated. Since the same reference numerals in the drawings indicate the same elements, their description will not be repeated.

[0055] In the following embodiments, terms such as "first," "second," "first-1," "first-2," "second-1," "second-2," etc., may be used to describe various elements, but these elements should not be limited to the above terms.

[0056] In the following examples, expressions used in the singular form include plural expressions unless they have a meaning that is clearly different in context.

[0057] In the following examples, it should be understood that terms such as "including" and "having" are intended to indicate the presence of the features or elements disclosed in the present invention and are not intended to exclude the possibility that one or more other features or elements may exist or be added.

[0058] Where it is mentioned that a layer, region, or element is formed on another layer, region, or element, it should be understood that this may be formed directly or indirectly on the other layer, region, or element. That is, for example, an interposed layer, region, or element may exist.

[0059] The size of elements in the drawings may be exaggerated for convenience of explanation. In other words, since the size and thickness of components in the drawings are depicted arbitrarily for convenience of explanation, the following embodiments are not limited thereto.

[0060] Where specific embodiments can be implemented differently, specific process sequences may be performed differently from the described order. For example, two processes described consecutively may be performed substantially simultaneously or in an order opposite to the described order.

[0061] In the present invention, "A and / or B" may include "A", "B", or "A and B".

[0062] As used herein, "approximately" or "substantially equal" means that the specified value is included and falls within the acceptable range of deviation for a specific value as determined by a person skilled in the art, taking into account the error associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "substantially equal" may be within one or more standard deviations, or within ±10%, ±5%, or ±2% of the specified value.

[0063] When it is stated that a layer, region, or component is connected to another layer, region, or component, this means that it may be connected directly or indirectly to that other layer, region, or component. That is, for example, there may be an interposed layer, region, or component. For example, when it is stated that a layer, region, or component is electrically connected to another layer, region, or component, this means that it may be electrically connected directly or indirectly to that other layer, region, or component. That is, for example, there may be an interposed layer, region, or component.

[0064] The x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, or they may represent other directions that are not orthogonal to each other.

[0065] FIG. 1 is a schematic perspective view of a display device (1) according to one embodiment. FIG. 2a and FIG. 2b are perspective views showing the display device (1) of FIG. 1 extended in a first direction. FIG. 2c is a perspective view showing the display device (1) of FIG. 1 extended in a second direction. FIG. 2d is a perspective view showing the display device (1) of FIG. 1 extended in the first direction and the second direction. FIG. 2e is a perspective view showing the display device (1) of FIG. 1 extended in a third direction.

[0066] Referring to FIG. 1, a 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 a plurality of pixels. The non-display area (NDA) may be placed outside the display area (DA). The non-display area (NDA) is an area where pixels are not placed and may completely surround the display area (DA).

[0067] The display device (1) can be extended or shortened in various directions. The display device (1) can be extended 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 shown in FIGS. 2a and 2b, the display area (DA) and / or non-display area (NDA) of the display device (1) can be extended in a first direction (e.g., x direction and / or -x direction). For example, as shown in FIG. 2a, it can be extended along the x direction and -x direction, or as shown in FIG. 2b, it can be extended along the x direction while one side of the display device (1) remains fixed.

[0068] The display device (1) can be extended in a second direction (e.g., the y direction and / or the -y direction) by an external force applied by an external object or a user. In one embodiment, as shown in FIG. 2c, the display area (DA) and / or non-display area (NDA) of the display device (1) can be extended in the y direction and the -y direction. In another embodiment, one side of the display device (1) can be extended in the y direction or the -y direction while remaining fixed.

[0069] The display device (1) can be extended in multiple directions, such as 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 a person's body. As shown in FIG. 2d, the display area (DA) and / or non-display area (NDA) of the display device (1) can be extended in the ±x direction and ±y direction.

[0070] The display device (1) can be extended in a third direction (e.g., z direction or -z direction) by an external force applied by an external object or a part of a person's body. In one embodiment, FIG. 2e shows a part of the display device (1), such as a part of the display area (DA), protruding in the z direction. In another embodiment, a part of the display device (1), such as a part of the display area (DA), can be protruded along the -z direction (or sunken along the z direction).

[0071] FIGS. 2a to 2e illustrate a display device (1) extended in a first direction, a second direction, and / or a third direction, but the present invention is not limited thereto. In other embodiments, the display device (1) may be varied into an irregular shape, such as having two or more axes, being bent or twisted.

[0072] FIG. 3 is a schematic plan view of a display device (1, FIG. 1) according to one embodiment.

[0073] A plurality of pixels may be arranged in the display area (DA) of the display device (1). Each pixel may include subpixels that emit light of different colors. A light-emitting element corresponding to each subpixel may be placed in the display area (DA). A circuit for providing electrical signals to the light-emitting elements placed in the display area (DA) and to the transistors electrically connected to the light-emitting elements may be located in the non-display area (NDA) surrounding the display area (DA). A gate driving circuit (GDC) may be placed in the first non-display area (NDA1) and the second non-display area (NDA2), respectively, which are placed on both sides of the display area (DA). The gate driving circuit (GDC) may include drivers for providing electrical signals to the gate electrodes of each of the transistors electrically connected to the light-emitting elements. FIG. 3 illustrates the placement of a gate driving circuit (GDC) in the first non-display area (NDA1) and the second non-display area (NDA2), respectively, but the present invention is not limited thereto. In another embodiment, the gate driving circuit (GDC) may be placed in either the first non-display area (NDA1) or the second non-display area (NDA2).

[0074] The data driving circuit (DDC) may be placed 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) being placed in the fourth non-display area (NDA4). In another embodiment, the data driving circuit (DDC) may be placed in each of the third non-display area (NDA3) and the fourth non-display area (NDA4).

[0075] FIG. 3 illustrates a data driving circuit (DDC) placed in the fourth non-display area (NDA4) of a 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 to a terminal portion (not shown) placed in the fourth non-display area (NDA4), and a data driving circuit (DDC) may be placed on the aforementioned flexible circuit board.

[0076] In some embodiments, the elongation of the non-display area (NDA) may be equal to or less than the elongation of the display area (DA). In one embodiment, the elongation of the non-display area (NDA) may differ from area to area. 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 less than the elongation of each of the first non-display area (NDA1), the second non-display area (NDA2), and the third non-display area (NDA3). In the present invention, elongation refers to a numerical value representing the change in length (ΔL / L) by which the display device (1) can be extended without physical damage to the display device (1) when an external force is applied to the display device (1). Here, ΔL is the amount of change in length of the display device, and L represents the initial length of the display device.

[0077] FIG. 4a is a plan view of the IV portion of FIG. 3 as a part of a display device (1) according to one embodiment.

[0078] Referring to FIG. 4a, the display device (1) may include first island sections (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 sections (12) connecting adjacent first island sections (11).

[0079] Each first island section (11) may be connected to a plurality of first bridge sections (12). For example, each first island section (11) may be connected to four first bridge sections (12). Two first bridge sections (12) may be positioned on both sides of the first island section (11) along a first direction (e.g., x direction or -x direction), and the remaining two first bridge sections (12) may be positioned on both sides of the first island section (11) along a second direction (e.g., y direction or -y direction). In one embodiment, four first bridge sections (12) may be connected to each of the four sides of the first island section (11). Each of the four first bridge sections (12) may be adjacent to each corner of the first island section (11).

[0080] The first bridge sections (12) may be spaced apart from each other by a first opening (CS1) located between the first bridge sections (12). In one embodiment, a first opening (CS1) approximately H-shaped and a first opening (CS1) approximately I-shaped, which is the aforementioned H-shaped rotated 90 degrees, may be alternately 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 section (12) are connected to each of the adjacent first island sections (11), and one side of each first bridge section (12) may be spaced apart from one side of the adjacent first island section (11) and / or one side of the other first bridge section (12) by the first opening (CS1).

[0081] The display device (1) may include second island sections (21) spaced apart from each other in a non-display area, for example, a first non-display area (NDA1) shown in FIG. 4a, and second bridge sections (22) connecting adjacent second island sections (21).

[0082] Each second island section (21) may extend along a first direction (e.g., x direction or -x direction). The second island sections (21) may be spaced apart from each other along a second direction (e.g., y direction or -y direction) that intersects the first direction (e.g., x direction or -x direction). Each second island section (21) may include drivers of the gate driving circuit (GDC, FIG. 3) described with reference to FIG. 3.

[0083] The second bridge section (22) may have a serpentine shape. The length of the second bridge section (22) may be greater than the shortest distance between adjacent second island sections (21) along the second direction (e.g., the y direction or the -y direction). In one embodiment, the second bridge section (22) may have a shape of approximately omega (Ω) that is convex toward the first direction (e.g., the x direction or the -x direction). The second bridge sections (22) may be positioned between adjacent second island sections (21) but spaced apart from each other.

[0084] The second bridge sections (22) between adjacent second island sections (21) may be spaced apart from each other by a second opening (CS2). Between adjacent second island sections (21), the second openings (CS2) and the second bridge sections (22) may be arranged alternately along a first direction (e.g., x direction or -x direction). The second openings (CS2) may have the same shape as each other. Both ends of each second bridge section (22) are connected to adjacent second island sections (21), but one side of each second bridge section (22) may be spaced apart from the side of the adjacent second island section (21) and / or the side of the other second bridge section (22) by the second opening (CS2).

[0085] Any one second island section (21) placed in the first non-display area (NDA1) may correspond to a plurality of first island sections (11) arranged in the display area (DA). For example, any one second island section (21) placed in the first non-display area (NDA1) may correspond to the first island sections (11) arranged in the (i)th row and the first island sections (11) arranged in the (i+1)th row in the display area (DA) (where i is a positive number greater than 0). FIG. 4a illustrates that one second island section (21) corresponds to two rows of first island sections (11), but the present invention is not limited thereto. In another embodiment, any one second island section (21) placed in the first non-display area (NDA1) may correspond to n rows of first island sections (11) placed in the display area (DA) (where n is a positive number greater than or equal to 3).

[0086] A non-display area, such as a first non-display area (NDA1), may include a first sub-non-display area (SNDA1) in which the aforementioned second island sections (21) and second bridge sections (22) are arranged, and a second sub-non-display area (SNDA2) between the first sub-non-display area (SNDA1) and the display area (DA). In the second sub-non-display area (SNDA2), third bridge sections (23) for connecting the display area (DA) and the first sub-non-display area (SNDA1) may be arranged. One end of the third bridge section (23) may be connected to the second island section (21) and / or the second bridge section (22), and the other end of the third bridge section (23) may be connected to the first island section (11) and / or the first bridge section (12).

[0087] The third bridge section (23) may have a wavy shape. In one embodiment, the shape of the third bridge section (23) may differ from the shapes of the first bridge section (12) and the second bridge section (22), respectively. In one embodiment, as shown in FIG. 4a, the third bridge section (23) may have a shape of approximately omega (Ω) that is convex toward the second direction (e.g., the y direction or the -y direction). Adjacent third bridge sections (23) arranged along the second direction (e.g., the y direction or the -y direction) may have a structure that is symmetrical to each other, such that one of them is convex toward the y direction and the other is convex toward the -y direction. Between the third bridge sections (23), there may be a structure in which a third opening (CS3) and a fourth opening (CS4) of different shapes are repeated. The width of the third bridge section (23) may differ from the width of the first bridge section (12) and the width of the second bridge section (22). In one embodiment, the width of the third bridge section (23) may be greater than the width of the first bridge section (12) and smaller than the width of the second bridge section (22).

[0088] FIG. 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), each have different shapes from the first island portion (11) and the first bridge portion (12) of the display area (DA). In another embodiment of the present invention, the second island portion (21) and the second bridge portion (22) of the non-display area may each have the same shape as the first island portion (11) and the first bridge portion (12) of the display area (DA).

[0089] FIG. 4b is a plan view of the IV portion of FIG. 3 as a part of a display device (1) according to one embodiment.

[0090] Referring to FIG. 4b, the display device (1) includes first island sections (11) spaced apart from each other in the display area (DA) and first bridge sections (12) that are spaced apart from each other by a first opening (CS1) and connect adjacent first island sections (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.

[0091] The display device (1) may include second island sections (21) and second bridge sections (22) disposed in a non-display area, for example, a first non-display area (NDA1). In one embodiment, the second island sections (21) and the second bridge sections (22) may each have substantially the same shape as the first island sections (11) and the first bridge sections (12).

[0092] The second island sections (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, e.g., a first non-display area (NDA1). Each of the second bridge sections (22) may connect adjacent second island sections (21). The second bridge sections (22) may be spaced apart from each other by a second opening (CS2) located between the second bridge sections (22).

[0093] The second opening (CS2) may have substantially the same shape as the first opening (CS1). For example, a second opening (CS2) with an approximate H shape and a second opening (CS2) with an approximate I shape may be alternately arranged in a non-display area, such as a first non-display area (NDA1). Both ends of each second bridge section (22) are connected to each of the adjacent second island sections (21), and one side of each second bridge section (22) may be separated from one side of the adjacent second island section (21) and / or one side of the other second bridge section (22) by the second opening (CS2).

[0094] Each second island section (21) can be connected to four second bridge sections (22). Each second island section (21) may include drivers of the gate driving circuit (GDC, FIG. 3) described with reference to FIG. 3.

[0095] Any row of the second island portions (21) placed in the first non-display area (NDA1) may correspond to any row of the first island portions (11) arranged in the display area (DA). For example, the second island portions (21) arranged in the (i)th row along the first direction (e.g., x direction or -x direction) in the first non-display area (NDA1) may correspond to the first island portions (11) arranged in the same row, e.g., the (i)th row, in the display area (DA) (where i is a positive number greater than 0).

[0096] The display device (1) may include third bridge sections (23) disposed in a second sub-non-display area (SNDA2) to connect a display area (DA) and a first sub-non-display area (SNDA1). A non-display area, such as a first non-display area (NDA1), may include a first sub-non-display area (SNDA1) in which second island sections (21) and second bridge sections (22) are disposed, and a second sub-non-display area (SNDA2) located between the first sub-non-display area (SNDA1) and the display area (DA), which includes the third bridge sections (23). The third bridge section (23) may be substantially identical to the first bridge section (12) and the second bridge section (22). For example, the width of the third bridge section (23) may be the same as the width of the first bridge section (12) and the width of the second bridge section (22).

[0097] FIG. 4c is a plan view of part IV of FIG. 3 as a part of a display device according to one embodiment.

[0098] Referring to FIG. 4c, the display device (1) may include first island sections (11) that are 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 sections (12) that connect adjacent first island sections (11).

[0099] The first bridge sections (12) may be spaced apart from each other by a first opening (CS1) located between the first bridge sections (12). The first bridge section (12) may have a wavy shape. For example, as shown in FIG. 4c, the first bridge section (12) may have a shape of approximately the letter 'S', such as including two round sections (12R) and a straight section (12S) between the two round sections (12R).

[0100] Each first island section (11) may be connected to a plurality of first bridge sections (12). For example, each first island section (11) may be connected to four first bridge sections (12). Two first bridge sections (12) may be placed on both sides of the first island section (11) along a first direction (e.g., x direction or -x direction), and the remaining two first bridge sections (12) may be placed on both sides of the first island section (11) along a second direction (e.g., y direction or -y direction). Four first bridge sections (12) may each be connected to four sides of the first island section (11). Each of the four first bridge sections (12) may be adjacent to each corner of the first island section (11).

[0101] The display device (1) may include second island sections (21) that are 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, e.g., a first non-display area (NDA1) shown in FIG. 4c, and second bridge sections (22) that connect adjacent second island sections (21).

[0102] The second bridge sections (22) may be spaced apart from each other by a second opening (CS2) located between the second bridge sections (22). The second bridge section (22) may have a wavy shape. For example, as shown in FIG. 4c, the second bridge section (22) may have a shape of approximately the letter 'S'. The size and / or width of the second bridge section (22) may differ from the size and / or width of the first bridge section (12). For example, the size and / or width of the second bridge section (22) may be larger than the size and / or width of the first bridge section (12). The radius of curvature of the rounded portion of the second bridge section (22) may differ from the radius of curvature of the rounded portion of the first bridge section (12). For example, the radius of curvature of the rounded portion of the second bridge section (22) may be larger than the radius of curvature of the rounded portion of the first bridge section (12).

[0103] Each second island section (21) may be connected to a plurality of second bridge sections (22). Each second island section (21) may be connected to four second bridge sections (22). Two second bridge sections (22) may be positioned on both sides of the second island section (21) along a first direction (e.g., x direction or -x direction), and the remaining two second bridge sections (22) may be positioned on both sides of the second island section (21) along a second direction (e.g., y direction or -y direction). In one embodiment, four second bridge sections (22) may be connected to each of the four sides of the second island section (21). Each second bridge section (22) may be connected to the central part of each side of the second island section (21).

[0104] Any row of second island sections (21) placed in the first non-display area (NDA1) may correspond to multiple rows of first island sections (11) arranged in the display area (DA). For example, any row of second island sections (21) placed in the first non-display area (NDA1) may correspond to the first island sections (11) arranged in the (i)th row and the first island sections (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 row of second island sections (21) may correspond to n rows of first island sections (11) (where n is a positive number greater than or equal to 3).

[0105] A non-display area, such as a first non-display area (NDA1), may include a first sub-non-display area (SNDA1) in which the aforementioned second island sections (21) and second bridge sections (22) are arranged, and a second sub-non-display area (SNDA2) between the first sub-non-display area (SNDA1) and the display area (DA). In the second sub-non-display area (SNDA2), third bridge sections (23) may be arranged to connect the display area (DA) and the first sub-non-display area (SNDA1). One end of the third bridge section (23) may be connected to the second island section (21), and the other end of the third bridge section (23) may be connected to the first island section (11). For example, one end of the third bridge section (23) can be connected to the central part of one side of the second island section (21), and the other end of the third bridge section (23) can be connected to the central part of one side of the first island section (11).

[0106] The third bridge section (23) may have a wavy shape. In one embodiment, the shape of the third bridge section (23) may differ from the shape of the first bridge section (12) and the second bridge section (22), respectively. The width of the third bridge section (23) may differ from the width of the first bridge section (12) and the width of the second bridge section (22). The width of the third bridge section (23) may be greater than the width of the first bridge section (12) and smaller than the width of the second bridge section (22). In the second direction (e.g., the y direction or the -y direction), a third opening (CS3) and a fourth opening (CS4) of different shapes may be alternately arranged between the third bridge sections (23).

[0107] FIG. 5 is a cross-sectional view schematically showing a first island part (11) and a first bridge part (12) placed in a display area (DA) of a display device (1) according to one embodiment.

[0108] Referring to FIG. 5, the first island section (11) and the first bridge section (12) placed in the display area (DA) may be spaced apart with the first opening (CS1) in between. The first island section (11) includes light-emitting elements (LEDs) and a circuit for driving the light-emitting elements electrically connected thereto, such as a pixel driving circuit (PC), and the first bridge section (12) may include wiring (WL) electrically connected to the pixel driving circuits (PCs) placed in each of the adjacent first island sections (11).

[0109] Looking at the first island section (11), a buffer layer (111) containing an inorganic insulating material is disposed on the substrate (100), and a pixel driving circuit section (PC) may be disposed on the buffer layer (111). An insulating layer (IL) containing an inorganic insulating material and / or an organic insulating material may be disposed between the pixel driving circuit section (PC) and the light-emitting element (LED). The light-emitting element (LED) is disposed on the insulating layer (IL) and may be electrically connected to the corresponding pixel driving circuit section (PC). The light-emitting elements (LEDs) may emit light of different colors or light of the same color. In one embodiment, the light-emitting elements (LEDs) may each emit red, green, and blue light. In some embodiments, the light-emitting elements (LEDs) may emit white light. In another embodiment, the light-emitting elements (LEDs) may each emit red, green, blue, and white light.

[0110] The substrate (100) may include a polymer resin such as polyethersulfone, polyarylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polycarbonate, cellulose triacetate, and cellulose acetate propionate. In one embodiment, the substrate (100) may be a single layer comprising the aforementioned polymer resin. In another embodiment, the substrate (100) may be a multilayer structure comprising a base layer comprising the aforementioned polymer resin and a barrier layer comprising an inorganic insulating material. The substrate (100) comprising the polymer resin may have flexible, rollable, and bendable properties.

[0111] In one embodiment, FIG. 5 illustrates three pixel driving circuit units (PCs) arranged in each first island unit (11) and three light-emitting elements (LEDs) connected to each pixel driving circuit unit (PC), but the present invention is not limited thereto. In another embodiment, the number of pixel driving circuit units (PCs) and light-emitting elements (LEDs) arranged in the first island unit (11) may be one, two, or four or more.

[0112] The encapsulation layer (300) may be placed on a light-emitting element (LED) and may protect the light-emitting element (LED) from external forces and / or moisture penetration. The encapsulation layer (300) may include an inorganic encapsulation layer and / or an organic encapsulation layer. In some embodiments, the encapsulation layer (300) may include a structure in which an inorganic encapsulation layer containing an inorganic insulating material, an organic encapsulation layer containing an organic insulating material, and an inorganic encapsulation layer containing an inorganic insulating material are laminated. In other embodiments, the encapsulation layer (300) may include an organic material such as resin. In some embodiments, the encapsulation layer (300) may include urethane epoxy acrylate. The encapsulation layer (300) may include a photosensitive material, such as a photoresist.

[0113] Looking at the first bridge section (12), an insulating layer (IL) containing an organic insulating material may be disposed on the substrate (100). When the display device (1) is stretched, the first bridge section (12), which undergoes relatively more deformation, may not have a layer containing an inorganic insulating material that is prone to cracking, unlike the first island section (11).

[0114] In one embodiment, the substrate (100) corresponding to the first bridge portion (12) may have the same stacked 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 another embodiment, the substrate (100) corresponding to the first bridge portion (12) may have a stacked structure different from the stacked structure of the substrate (100) corresponding to the first island portion (11). In some embodiments, the substrate (100) corresponding to the first island portion (11) may have a multilayer structure including a base layer containing a polymer resin and a barrier layer containing an inorganic insulating material, and the substrate (100) corresponding to the first bridge portion (12) may have a structure of a polymer resin layer without a layer containing an inorganic insulating material.

[0115] As previously described, the wiring (WL) of the first bridge section (12) may be signal lines (e.g., gate lines, data lines, etc.) for providing electrical signals to transistors included in the pixel driving circuit section (PC) of the first island section (11), or voltage lines (e.g., driving voltage lines, initialization voltage lines, etc.) for providing voltage. An encapsulation layer (300) may also be disposed in the first bridge section (12). In another embodiment, the encapsulation layer (300) may not exist in the first bridge section (12).

[0116] Referring to FIGS. 4a through 4c and FIG. 5, the substrate (100) corresponding to the first island portion (11) and the substrate (100) corresponding to the first bridge portion (12) can be connected to each other. In other words, the plan view shown in FIGS. 4a through 4c above may be substantially the same as the plan view of the substrate (100) in FIG. 5. In other words, the substrate (100) may include an area corresponding to the first island portion (11), an area corresponding to the first bridge portion (12), and an opening (100OP1) having the same shape as the first opening (CS1).

[0117] Similarly, the bag layer (300) corresponding to the first island portion (11) and the bag layer (300) corresponding to the first bridge portion (12) can be connected to each other. For example, the plan view shown in FIGS. 4a through 4c above may be substantially identical to the plan view of the bag layer (300). In other words, the bag layer (300) may include an area corresponding to the first island portion (11), an area corresponding to the first bridge portion (12), and an opening (300OP1) having the same shape as the first opening (CS1).

[0118] 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 (PC), wiring (WL), an insulating layer (IL), and a light-emitting element (LED). Similar to the substrate (100), the plan view previously shown in FIGS. 4a through 4c may be substantially identical to the plan view 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).

[0119] FIGS. 6a to 6c are equivalent circuit diagrams of subpixels of a display device (1) according to one embodiment, respectively.

[0120] Referring to FIG. 6a, a light-emitting element (LED) corresponding to a subpixel is electrically connected to a pixel driving circuit (PC), and the pixel driving circuit (PC) 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 a signal line and a voltage line. The signal line may include a gate line such as a first scan line (SL1) and a data line (DL), and the voltage line may include a first voltage line (VDDL).

[0121] The second transistor (T2) can be electrically connected to the first scan line (SL1) and the data line (DL). The first scan line (SL1) can provide a first scan signal (GW) to the gate electrode of the second transistor (T2). The second transistor (T2) can transmit a data signal (Dm) input from the data line (DL) to the first transistor (T1) according to the first scan signal (GW) input from the first scan line (SL1).

[0122] 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 received from the second transistor (T2) and the first power supply voltage (VDD) supplied by the first voltage line (VDDL).

[0123] The first transistor (T1) is a driving transistor capable of controlling the driving current flowing through the light-emitting element (LED). The first transistor (T1) can be connected to the first voltage line (VDDL) and the storage capacitor (Cst). The first transistor (T1) can control the driving current flowing through the light-emitting element (LED) from the first voltage line (VDDL) in correspondence with the voltage value stored in the storage capacitor (Cst). The light-emitting element (LED) can emit light having a predetermined brightness by the driving current. The first electrode of the light-emitting element (LED) is electrically connected to the first transistor (T1), and the second electrode can be electrically connected to the second voltage line (VSSL) that supplies the second power supply voltage (VSS).

[0124] FIG. 6a illustrates that the pixel driving circuit (PC) includes two transistors and one storage capacitor, but in other embodiments, the pixel driving circuit (PC) may include three or more transistors.

[0125] Referring to FIG. 6b, the pixel driving circuit (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).

[0126] 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), and a light emission control line (EML), and data lines (DL). The voltage lines may include first and second initialization voltage lines (VIL1, VIL2) and a first voltage line (VDDL).

[0127] The first voltage line (VDDL) can transmit the first power supply voltage (VDD) to the first transistor (T1). The first initialization voltage line (VIL1) can transmit the first initialization voltage (Vint) that initializes the first transistor (T1) to the pixel driving circuit (PC). The second initialization voltage line (VIL2) can transmit the second initialization voltage (Vaint) that initializes the first electrode of the light-emitting element (LED) to the pixel driving circuit (PC).

[0128] The first transistor (T1) can be electrically connected to the first voltage line (VDDL) via the fifth transistor (T5) and electrically connected to the light-emitting element (LED) via the sixth transistor (T6). The first transistor (T1) acts as a driving transistor and receives a data signal (Dm) according to the switching operation of the second transistor (T2) and supplies a driving current to the light-emitting element (LED).

[0129] 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 according to the first scan signal (GW) received through the first scan line (SL1) and performs a switching operation to transmit the data signal (Dm) transmitted to the data line (DL) to the first node (N1).

[0130] 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 according to the first scan signal (GW) received through the first scan line (SL1) and can connect the first transistor (T1) to the diode.

[0131] 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 according to the third scan signal (GI) received 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), thereby initializing the voltage of the gate electrode of the first transistor (T1). The third scan signal (GI) may correspond to the first scan signal of another pixel driving circuit unit placed in the previous row of the corresponding pixel driving circuit unit (PC).

[0132] The fifth transistor (T5) may be an operation control transistor, and the sixth transistor (T6) may be a light-emitting control transistor. The fifth transistor (T5) and the sixth transistor (T6) are electrically connected to the light-emitting control line (EML) and are simultaneously turned on according to the light-emitting control signal (EM) received through the light-emitting control line (EML) to form a current path so that a driving current can flow from the first voltage line (VDDL) toward the light-emitting element (LED).

[0133] The seventh transistor (T7) is a second initialization transistor and can 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 according to the second scan signal (GB) received through the second scan line (SL2), and can initialize the first electrode of the light-emitting element (LED) by transmitting the second initialization voltage (Vaint) from the second initialization voltage line (VIL2) to the first electrode of the light-emitting element (LED).

[0134] 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) can maintain the voltage applied to the gate electrode of the first transistor (T1) by storing and maintaining a voltage corresponding to the difference between the voltages of the first voltage line (VDDL) and the gate electrode of the first transistor (T1).

[0135] Referring to FIG. 6c, the pixel driving circuit (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).

[0136] 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), and a light emission control line (EML), and a data line (DL). The voltage lines may include first and second initialization voltage lines (VIL1, VIL2), a holding voltage line (VSL), and a first voltage line (VDDL).

[0137] The first voltage line (VDDL) can transmit the first power supply voltage (VDD) to the first transistor (T1). The first initialization voltage line (VIL1) can transmit the first initialization voltage (Vint) that initializes the first transistor (T1) to the pixel driving circuit (PC). The second initialization voltage line (VIL2) can transmit the second initialization voltage (Vaint) that initializes the first electrode of the light-emitting element (LED) to the pixel driving circuit (PC). The holding voltage line (VSL) can provide the holding voltage (VSUS) to the second electrode (CE2) of the second node (N2), for example, the storage capacitor (Cst), during the initialization section and the data writing section.

[0138] The first transistor (T1) can be electrically connected to the first voltage line (VDDL) via the fifth transistor (T5) and the eighth transistor (T8), and can be electrically connected to the light-emitting element (LED) via the sixth transistor (T6). The first transistor (T1) acts as a driving transistor and can receive a data signal (Dm) according to the switching operation of the second transistor (T2) and supply driving current to the light-emitting element (LED).

[0139] 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 according to the first scan signal (GW) received through the first scan line (SL1) and performs a switching operation to transmit the data signal (Dm) transmitted to the data line (DL) to the first node (N1).

[0140] 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 according to the first scan signal (GW) received through the first scan line (SL1) and connects the first transistor (T1) to the diode, thereby compensating for the threshold voltage of the first transistor (T1).

[0141] The fourth transistor (T4) is electrically connected to the third scan line (SL3) and the first initialization voltage line (VIL1), and is turned on according to the third scan signal (GI) received 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 the first scan signal of another pixel driving circuit unit placed in the previous row of the corresponding pixel driving circuit unit (PC).

[0142] The fifth transistor (T5), the sixth transistor (T6), and the eighth transistor (T8) are electrically connected to the light emission control line (EML) and are simultaneously turned on according to the light emission control signal (EM) received through the light emission control line (EML) to form a current path so that driving current can flow from the first voltage line (VDDL) toward the light-emitting element (LED).

[0143] The seventh transistor (T7) is a second initialization transistor and can 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 according to the second scan signal (GB) received through the second scan line (SL2) and transmits 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).

[0144] The ninth transistor (T9) can be electrically connected to the second scan line (SL2), the second electrode (CE2) of the storage capacitor (Cst), and the holding voltage line (VSL). The ninth transistor (T9) is turned on according to the second scan signal (GB) received through the second scan line (SL2), and can transmit a holding voltage (VSUS) to the second node (N2), such as the second electrode (CE2) of the storage capacitor (Cst), during the initialization period and the data writing period.

[0145] The eighth transistor (T8) and the ninth transistor (T9) can each be electrically connected to the second node (N2), for example, the 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 during the initialization period and the data writing period, and the eighth transistor (T8) may be turned on and the ninth transistor (T9) may be turned off during the light emission period. Since the second node (N2) receives the holding voltage (VSUS) during the initialization period and the data writing period, the uniformity of the brightness of the display device (e.g., LRU, Long Range Uniformity) due to the voltage drop of the first voltage line (VDDL) can be improved.

[0146] 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 eighth transistor (T8) and the ninth transistor (T9).

[0147] The auxiliary capacitor (Ca) can be electrically connected to the sixth transistor (T6), the holding voltage line (VSL), and the first electrode of the light-emitting element (LED). By storing and maintaining a voltage corresponding to the voltage difference between the first electrode of the light-emitting element (LED) and the holding voltage line (VSL) while the seventh transistor (T7) and the ninth transistor (T9) are turned on, the auxiliary capacitor (Ca) can prevent the problem of the black brightness rising when the sixth transistor (T6) is turned off.

[0148] FIG. 7 is a schematic plan view showing the first island portion (11) of a display device according to one embodiment.

[0149] Referring to FIG. 7, light-emitting elements may be placed in the first island portion (11). In one embodiment, FIG. 7 illustrates that the light-emitting elements placed in the first island portion (11) include first to third light-emitting diodes (230A, 230B, 230C) that emit light of different colors. For example, one of the first to third light-emitting diodes (230A, 230B, 230C) may emit red light, another may emit green light, and the remaining one may emit blue light.

[0150] In one embodiment, FIG. 7 illustrates three light-emitting diodes (230) arranged and three first electrode pads (241) corresponding to each light-emitting diode (230), but the present invention is not limited thereto. In another embodiment, two or four or more light-emitting diodes (230) may be arranged in the first island portion (11), and two or four or more first electrode pads (241) may be arranged. For convenience of explanation, it will be described below that three light-emitting diodes (230) and three first electrode pads (241) are arranged in the first island portion (11).

[0151] Each of the light-emitting diodes (230) can be electrically connected to a pixel driving circuit unit (PC) through a first electrode pad (or first electrode layer, 241) and can be electrically connected to a second voltage line (VSSL), which is a common voltage line, through a second electrode pad (or second electrode layer, 242).

[0152] The first electrode pads (241) may be spaced apart from each other along one direction, for example, a first direction (e.g., x direction or -x direction). In this regard, FIG. 7 illustrates that the first electrode pads (241) include a first-1 electrode pad (241-1), a first-2 electrode pad (241-2), and a first-3 electrode pad (241-3). The first-1 electrode pad (241-1), the first-2 electrode pad (241-2), and the first-3 electrode pad (241-3) may be spaced apart from each other along a first direction (e.g., x direction or -x direction). The first-1 electrode pad (241-1) and the first-3 electrode pad (241-3) may each be placed on opposite sides of the first-2 electrode pad (241-2). The first-1 electrode pad (241-1), the first-2 electrode pad (241-2), and the first-3 electrode pad (241-3) can each be electrically connected to the corresponding pixel driving circuit (PC) through the first contact hole (CNT1).

[0153] The second electrode pad (242) may be spaced apart from the first electrode pads (241) along a direction that intersects the arrangement direction of the first electrode pads (241), for example, a second direction (for example, the y direction or the -y direction). The light-emitting elements may share one second electrode pad (242). For example, the first part (242-1) of the second electrode pad (242) may be electrically connected to the first light-emitting diode (230A), which is the first light-emitting element, and the second part (242-2) of the second electrode pad (242) may be electrically connected to the second light-emitting diode (230B), which is the second light-emitting element, and the third part (242-3) of the second electrode pad (242) may be electrically connected to the third light-emitting diode (230C), which is the third light-emitting element, and the first to third parts (242-1, 242-2, 242-3) may be connected as a single unit. The second part (242-2) of the second electrode pad (242) may be located between the first part (242-1) and the third part (242-3).

[0154] A first portion (242-1) of the second electrode pad (242) may be positioned adjacent to one of the first electrode pads (241), such as the first-1 electrode pad (241-1), along the second direction (e.g., the y direction or the -y direction). A second portion (242-2) of the second electrode pad (242) may be positioned adjacent to another first electrode pad (241), such as the first-2 electrode pad (241-2), along the second direction (e.g., the y direction or the -y direction). A third portion (242-3) of the second electrode pad (242) may be positioned adjacent to the remaining first electrode pad (241), such as the first-3 electrode pad (241-3), along the second direction (e.g., the y direction or the -y direction).

[0155] The first part (242-1) and the second part (242-2) of the second electrode pad (242) are connected to each other through the first connecting part (242-4), and the second part (242-2) and the third part (242-3) of the second electrode pad (242) can be connected to each other through the second connecting part (242-5). The width (Wa) of each of the first connecting part (242-4) and the second connecting part (242-5) along the second direction (e.g., the y direction or the -y direction) may be smaller than the width (Wb) of each of the first to third parts (242-1, 242-2, 242-3) of the second electrode pad (242).

[0156] The second electrode pad (242) can be electrically connected to a second voltage line (VSSL) passing through the first island portion (11) via a second contact hole (CNT2). The second voltage line (VSSL) may include a plurality of branches. One of the branches may pass between the first portion (242-1) and the second portion (242-2) and overlap with the first connection portion (242-4), and the other may pass between the second portion (242-2) and the third portion (242-3) and overlap with the second connection portion (242-5). Each of the first connection portion (242-4) and the second connection portion (242-5) can be electrically connected to the second voltage line (VSSL) via the second contact hole (CNT2). FIG. 7 illustrates that the first connecting portion (242-4) and the second connecting portion (242-5) are each electrically connected to the second voltage line (VSSL) through the second contact hole (CNT2), but the present invention is not limited thereto. In one embodiment, at least one of the first connecting portion (242-4) and the second connecting portion (242-5) may be electrically connected to the second voltage line (VSSL) through the second contact hole (CNT2).

[0157] FIG. 8 is a cross-sectional view of the first island portion (11) of a display device (1) according to one embodiment of the present invention, corresponding to the cross-sectional view along the lines VIIIa-VIIIa' and VIIIb-VIIIb' of FIG. 7.

[0158] On the substrate (100), a pixel driving circuit (PC) and a light-emitting diode (230) are arranged as light-emitting elements electrically connected to the pixel driving circuit (PC). FIG. 8 illustrates that, as an embodiment, the light-emitting diode (230) is a second light-emitting diode (230B), but the present invention is not limited thereto. The structure of the first light-emitting diode (230A) and the pixel driving circuit (PC), and the structure of the third light-emitting diode (230C) and the pixel driving circuit (PC) are identical to the structure shown in FIG. 8.

[0159] The pixel driving circuit (PC) may include transistors and a storage capacitor (Cst) as described with reference to FIGS. 6a to 6c. In this regard, FIG. 8 illustrates a first transistor (T1) and a second transistor (T2) among the transistors of the pixel driving circuit (PC).

[0160] The buffer layer (201) is disposed between the substrate (100) and the pixel driving circuit (PC) and can prevent impurities from penetrating into the transistor. The buffer layer (201) may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, and may be a single layer or a multilayer containing the aforementioned inorganic insulating material.

[0161] The first transistor (T1) may include a first semiconductor layer (Act1) and a first gate electrode (GE1). The source region and drain region of the first semiconductor layer (Act1) may be electrically connected to a first source electrode (SE1) and / or a first drain electrode (DE1), respectively. The second transistor (T2) may include a second semiconductor layer (Act2) and a second gate electrode (GE2). The source region and drain region of the second semiconductor layer (Act2) may be electrically connected to a second source electrode (SE2) and / or a second drain electrode (DE2), respectively.

[0162] FIG. 8 illustrates a top gate type in which the first and second gate electrodes (GE1, GE2) are each placed on the first and second semiconductor layers (Act1, Act2) with the gate insulating layer (203) in between, but according to another embodiment, the first and second transistors (T1, T2) may be a bottom gate type.

[0163] In one embodiment, each of the first and second semiconductor layers (Act1, Act2) may include polysilicon. In one embodiment, each of the first and second semiconductor layers (Act1, Act2) may include amorphous silicon, oxide semiconductor, organic semiconductor, etc. Each of the first and second gate electrodes (GE1, GE2) may include a low-resistance metal material. Each of the first and second gate electrodes (GE1, GE2) 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.

[0164] The gate insulating layer (203) may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, and may be a single layer or a multilayer containing the aforementioned material.

[0165] A storage capacitor (Cst) may include a first electrode (CE1) and a second electrode (CE2) that overlap with a first interlayer insulating layer (205) in between. In one embodiment, the storage capacitor (Cst) may overlap with a first transistor (T1). In this regard, FIG. 8 illustrates that the first gate electrode (GE1) of the first transistor (T1) is the first electrode (CE1) of the storage capacitor (Cst). In another embodiment, the storage capacitor (Cst) may not overlap with the first transistor (T1). The storage capacitor (Cst) may be covered by a second interlayer insulating layer (207). 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.

[0166] The first and second source electrodes (SE1, SE2) and the first and second drain electrodes (DE1, DE2) may be located on the same layer, for example, the second interlayer insulating layer (207), and may contain the same material. The first and second source electrodes (SE1, SE2) and the first and second drain electrodes (DE1, DE2) may contain a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be formed as a multilayer or single layer containing the above materials.

[0167] Each of the first interlayer insulating layer (205) and the second interlayer insulating layer (207) may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, and may be a single layer or a multilayer containing the aforementioned inorganic insulating material. The first and second transistors (T1, T2) and the storage capacitor (Cst) may be covered by the first organic insulating layer (209).

[0168] A second organic insulating layer (211) and a third organic insulating layer (213) may be sequentially disposed on the first organic insulating layer (209). Each of the first organic insulating layer (209), the second organic insulating layer (211), and the third organic insulating layer (213) may include an organic insulating material. The organic insulating material may include, for example, general-purpose polymers such as polymethylmethacrylate (PMMA) or polystyrene (PS), polymer derivatives having a phenolic group, acrylic polymers, imide polymers, aryl ether polymers, amide polymers, fluorine polymers, p-xylene polymers, vinyl alcohol polymers, and blends thereof.

[0169] The second voltage line (VSSL) may be placed on the second organic insulating layer (211). Although not illustrated, the first voltage line (VDDL, FIG. 6a to 6c) may be placed on the first organic insulating layer (209) or on the second organic insulating layer (211).

[0170] The first electrode pad (241) may be disposed on the third organic insulating layer (213). The first electrode pad (241) may be connected to the second contact metal (CM2) through the first contact hole (CNT1) of the third organic insulating layer (213), and the second contact metal (CM2) may be connected to the first contact metal (CM1) through the third contact hole (CNT3) of the second organic insulating layer (211). FIG. 8 illustrates the first electrode pad (241) being electrically connected to the first transistor (T1) through the first and second contact metals (CM1, CM2), but the present invention is not limited thereto. As described with reference to FIGS. 6b and 6c, the pixel driving circuit (PC) may further include a sixth transistor (T6, FIGS. 6b and 6c), in which case the first electrode pad (241) may be electrically connected to the sixth transistor (T6, FIGS. 6b and 6c) through the first and second contact metals (CM1, CM2). The sixth transistor (T6, FIGS. 6b and 6c) may have substantially the same structure as the first transistor (T1).

[0171] The second electrode pad (242) may be placed on the same layer as the first electrode pad (241), for example, the third organic insulating layer (213). The second electrode pad (242, for example, the first and second connecting portions (242-4, 242-5)) may be electrically connected to the second voltage line (VSSL) through the second contact hole (CNT2) of the third organic insulating layer (213), as described above with reference to FIG. 7 and illustrated in FIG. 8.

[0172] The light-emitting diode (230) may be an inorganic light-emitting diode. For example, the 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).

[0173] The first semiconductor layer (231) may include, for example, a p-type semiconductor layer. The p-type semiconductor layer is In x Al y Ga 1-x-y A semiconductor material having the composition formula N (0≤x≤1, 0≤y≤1, 0≤x+y≤1) can be selected from, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, etc., and p-type dopants such as Mg, Zn, Ca, Sr, and Ba can be doped.

[0174] The second semiconductor layer (232) may include, for example, an n-type semiconductor layer. The n-type semiconductor layer is In x Al y Ga 1-x-y A semiconductor material having the composition formula N (0≤x≤1, 0≤y≤1, 0≤x+y≤1) can be selected from, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, etc., and can be doped with n-type dopants such as Si, Ge, and Sn.

[0175] The intermediate layer (233) is a region where electrons and holes recombine, and as electrons and holes recombine, they transition to a lower energy level and can generate light having a corresponding wavelength. The intermediate layer (233) is, for example, In x Al y Ga 1-x-y It can be formed by including a semiconductor material having a composition formula of N (0≤x≤1, 0≤y≤1, 0≤x+y≤1), and can be formed as a single quantum well structure or a multi-quantum well (MQW) structure. Additionally, the intermediate layer (233) may include a quantum wire structure or a quantum dot structure.

[0176] FIG. 8 illustrates that the first semiconductor layer (231) includes a p-type semiconductor layer and the second semiconductor layer (232) includes an n-type semiconductor layer, but the present invention is not limited thereto. In another embodiment, 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.

[0177] The first electrode (235) and the second electrode (238) of the light-emitting diode (230) can be electrically connected to the first electrode pad (241) and the second electrode pad (242), respectively, through the bump metal (250).

[0178] The light-emitting diode (230) can be electrically connected to the first electrode pad (241) and the second electrode pad (242) by placing a bump metal (250) on each of the first electrode pad (241) and the second electrode pad (242), applying a predetermined amount of heat, and then placing the light-emitting diode (230) under a predetermined amount of pressure. For example, the light-emitting diode (230) can be electrically connected to the first electrode pad (241) through a first bump metal (250A) between the light-emitting diode (230) and the first electrode pad (241). The light-emitting diode (230) can be electrically connected to the second electrode pad (242) through a second bump metal (250B) between the light-emitting diode (230) and the second electrode pad (242).

[0179] Referring to FIGS. 7 and 8, bump metals (250) may be placed on corresponding electrode pads. A first bump metal (250A) may be placed on a corresponding first-1 electrode pad (241-1), a first-2 electrode pad (241-2), and a first-3 electrode pad (241-3). That is, the first bump metals (250A) connected to the first-1 electrode pad (241-1), the first-2 electrode pad (241-2), and the first-3 electrode pad (241-3), respectively, may not be electrically connected to each other. The planar shape of the first bump metal (250A) is substantially the same as the planar shape of the first electrode pad (241). For example, when viewed from a direction perpendicular to the upper surface of the substrate (100), the shape of the first bump metal (250A) on the first-1 electrode pad (241-1) is identical to the shape of the first-1 electrode pad (241-1). Likewise, the shape of the first bump metal (250A) on the first-2 electrode pad (241-2) is identical to the shape of the first-2 electrode pad (241-2), and the shape of the first bump metal (250A) on the first-3 electrode pad (241-3) is identical to the shape of the first-3 electrode pad (241-3). The second bump metal (250B) may be placed on the second electrode pad (242), for example, on the first to fifth portions (242-1, 242-2, 242-3, 242-4, 242-5). That is, the second bump metal (250B) may be electrically connected in common to the first to third portions (242-1, 242-2, 242-3) and the first and second connecting portions (242-4, 242-5). The bump metal (250) may include a metal such as gold (Au), nickel (Ni), indium (In), etc. The planar shape of the second bump metal (250B) is substantially the same as the planar shape of the second electrode pad (242). For example, when viewed from a direction perpendicular to the upper surface of the substrate (100), the shape of the second bump metal (250B) is the same as the shape of the second electrode pad (242).

[0180] FIG. 9 is a plan view showing the first and second electrode pads (241, 242) and light-emitting diodes (230) arranged in the first island portion (11) of a display device according to one embodiment.

[0181] The first and second electrode pads (241, 242) and the light-emitting diode (230) illustrated in FIG. 9 are as described with reference to FIG. 7 and FIG. 8. The first electrode pads (241), such as first-1 to first-3 electrode pads (241-1, 241-2, 241-3), may be spaced apart from each other along a first direction (e.g., x direction or -x direction). The second electrode pad (242) may be spaced apart from the first electrode pads (241) along a direction that intersects the arrangement direction of the first electrode pads (241) (e.g., a second direction). The second electrode pad (242) may include first to third portions (242-1, 242-2, 242-3) and first and second connecting portions (242-4, 242-5).

[0182] The first light-emitting diode (230A) may be electrically connected to the first-1 electrode pad (241-1) and the first portion (242-1) of the second electrode pad (242) adjacent to the first-1 electrode pad (241-1) along the second direction (e.g., y direction or -y direction). The second light-emitting diode (230B) may be electrically connected to the first-2 electrode pad (241-2) and the second portion (242-2) of the second electrode pad (242) adjacent to the first-2 electrode pad (241-2) along the second direction (e.g., y direction or -y direction). The third light-emitting diode (230C) can be electrically connected to the first-third electrode pad (241-3) and the third portion (242-3) of the second electrode pad (242) adjacent to the first-third electrode pad (241-3) along the second direction (e.g., y direction or -y direction).

[0183] The width (Wa) in the second direction of the first connecting part (242-4) connecting the first part (242-1) and the second part (242-2) of the second electrode pad (242) is smaller than the width (Wb) in the second direction of each of the first part (242-1) and the second part (242-2). The width (Wa) in the second direction of the second connecting part (242-5) connecting the second part (242-2) and the third part (242-3) of the second electrode pad (242) is smaller than the width (Wb) in the second direction of each of the second part (242-2) and the third part (242-3).

[0184] As a comparative example of the present invention, when the second electrode pad (242) has a rectangular shape with a constant width (e.g., a square or a rectangle), in the process of electrically connecting the light-emitting element to the first and second electrode pads (241, 242) using the bump metal (250, FIG. 8), a phenomenon may occur in which the second bump metal (250B, FIG. 8) on the relatively large second electrode pad (242) is pushed. For example, in the process of applying heat and pressure to place the light-emitting diode (230) after placing the bump metal (250) on the first and second electrode pads (241, 242), the second bump metal (250B) on the second electrode pad (242) may deviate from the boundary of the second electrode pad (242) and / or the uniformity of the thickness of the bump metal (250) may be reduced. However, as in the embodiment of the present invention, if the second electrode pad (242) includes a relatively narrow portion (e.g., the first connecting portion (242-4) and the second connecting portion (242-5)) and a relatively wide portion (e.g., the first to third portions (242-1, 242-2, 242-3)), the slipping phenomenon of the aforementioned bump metal (250) can be minimized or prevented.

[0185] The problem of displacement of the aforementioned bump metal (250) and / or reduction in thickness uniformity can be effectively prevented by arranging the connection point (e.g., second contact hole, CNT2) between the second electrode pad (242) and the second voltage line (VSSL, FIG. 7), which is a common voltage line, to correspond to the first connection part (242-4) and / or the second connection part (242-5). The upper surface of the first connection part (242-4) and / or the second connection part (242-5), which corresponds to the connection point (e.g., second contact hole, CNT2) between the second electrode pad (242) and the second voltage line (VSSL, FIG. 7), which is a common voltage line, may have a relatively lower flatness than the upper surface of the first to third parts (242-1, 242-2, 242-3). The above-described structure may reduce the uniformity of the thickness of the bump metal (250) and cause the bump metal (250) to slip, but the embodiment of the present invention can prevent the above-described problem by overlapping the position of the above-described second contact hole (CNT2) with the relatively narrow first connection part (242-4) and / or second connection part (242-5).

[0186] In one embodiment, each of the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) has a width (W11, W12, W13) in the first direction, and the aforementioned width (W11, W12, W13) may be constant along the second direction. In one embodiment, each of the first-1 to first-3 electrode pads (241-1, 241-2, 241-3) has a width (W31, W32, W33) in the first direction, and the aforementioned width (W31, W32, W33) may be constant along the second direction.

[0187] In one embodiment, the widths (W11, W12, W13) in the first direction of each of the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) may be the same as each other. In one embodiment, the widths (W31, W32, W33) in the first direction of each of the 1-1 to 1-3 electrode pads (241-1, 241-2, 241-3) may be the same as each other. In one embodiment, each of the first electrode pads (241) may have substantially the same width as a portion of the nearby second electrode pad (242). For example, the width (W11) in the first direction of the first portion (242-1) of the second electrode pad (242) may be the same as the width (W31) in the first direction of the first electrode pad (241-1). The width (W12) in the first direction of the second portion (242-2) of the second electrode pad (242) may be the same as the width (W32) in the first direction of the first-second electrode pad (241-2). The width (W13) in the first direction of the third portion (242-3) of the second electrode pad (242) may be the same as the width (W33) in the first direction of the first-third electrode pad (241-3).

[0188] FIG. 9 illustrates that the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) each have a roughly rectangular shape with a uniform width in the first direction and the second direction, but the present invention is not limited thereto. As shown in FIG. 10 to 12, the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) may not have a uniform width along the second direction.

[0189] FIGS. 10 and FIGS. 11 are plan views showing first and second electrode pads (241, 242) and a light-emitting diode (230) arranged in the first island portion (11) of a display device (1) according to one embodiment, respectively. The first and second electrode pads (241, 242) shown in FIGS. 10 and FIGS. 11 are substantially identical to the first and second electrode pads (241, 242) described above with reference to FIGS. 7 to 9, except that the width of the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) differs from the structure of the second electrode pad (242) shown above in FIGS. 7 and 9. For convenience of explanation, the following description will focus on the differences.

[0190] At least one selected from the first to third portions (242-1, 242-2, 242-3) of the second electrode pad (242) may include a portion with a different width in the first direction (e.g., x direction or -x direction).

[0191] In one embodiment, as shown in FIG. 10, for example, the first part (242-1) and the third part (242-3) of the second electrode pad (242) may each include parts with different widths in the first direction (e.g., x direction or -x direction).

[0192] The first part (242-1) may include a first-1 part (242-1a) that is relatively close to the first-1 electrode pad (241-1) and a first-2 part (242-1b) that is relatively far from the first-1 electrode pad (241-1). The width (W11') of the first-1 part (242-1a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W21') of the first-2 part (242-1b) in the first direction (e.g., x direction or -x direction). The width (W11') of the first-1 part (242-1a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W31) of the first-1 electrode pad (241-1) in the first direction (e.g., x direction or -x direction).

[0193] The third part (242-3) may include a third-1 part (242-3a) that is relatively close to the first-3 electrode pad (241-3) and a third-2 part (242-3b) that is relatively far from the first-3 electrode pad (241-3). The width (W13') of the third-1 part (242-3a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W23') of the third-2 part (242-3b) in the first direction (e.g., x direction or -x direction). The width (W13') of the third-1 part (242-3a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W33) of the first-3 electrode pad (241-3) in the first direction (e.g., x direction or -x direction).

[0194] FIG. 10 illustrates that two selected from the first to third parts (242-1, 242-2, 242-3) include parts with different widths in the first direction (e.g., x direction or -x direction), but the present invention is not limited thereto. As an embodiment, as shown in FIG. 11, each of the first to third parts (242-1, 242-2, 242-3) of the second electrode pad (242) may include parts with different widths in the first direction (e.g., x direction or -x direction).

[0195] The first part (242-1) and the third part (242-3) of FIG. 11 each have a structure as illustrated in FIG. 10. Similar to the first part (242-1) and the third part (242-3), the second part (242-2) may include a second-1 part (242-2a) that is relatively close to the first-2 electrode pad (241-2) and a second-2 part (242-2b) that is relatively far from the first-2 electrode pad (241-2). The width (W12') of the second-1 part (242-2a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W22') of the second-2 part (242-2b) in the first direction (e.g., x direction or -x direction). The width (W12') of the 2-1 part (242-2a) in the first direction (e.g., x direction or -x direction) may be smaller than the width (W32) of the 1-2 electrode pad (241-2) in the first direction (e.g., x direction or -x direction).

[0196] FIGS. 10 and 11 illustrate that two or three selected from the first to third parts (242-1, 242-2, 242-3) include parts with different widths in the first direction (e.g., x direction or -x direction), but the present invention is not limited thereto. In another embodiment, any one selected from the first to third parts (242-1, 242-2, 242-3), such as the second part (242-2), may include parts with different widths in the first direction (e.g., x direction or -x direction) as shown in FIG. 11, and the first part (242-1) and the third part (242-3) may have a constant width (W11, W13) along the second direction as shown in FIG. 9.

[0197] FIG. 12 is a plan view showing first and second electrode pads (241, 242) and a light-emitting diode (230) arranged in the first island portion (11) of a display device (1) according to one embodiment. The structure of the second electrode pad (242) shown in FIG. 12 is substantially the same as the structure of the second electrode pad (242) described above with reference to FIG. 11. The embodiment of FIG. 12 illustrates that the first electrode pad (241) includes portions with different widths in the first direction (e.g., the x direction or the -x direction). For convenience of explanation, the following description will focus on the differences in the structure of the first electrode pad (241) of FIG. 11 and FIG. 12.

[0198] In one embodiment, the first electrode pad (241-1) may include a first portion (241-1a) that is relatively close to the second electrode pad (242) and a second portion (241-1b) that is relatively far from the second electrode pad (242). The width ((W31') of the first portion (241-1a) of the first-1 electrode pad (241-1) in the first direction (e.g., x direction or -x direction) may be smaller than the width ((W41') of the second portion (241-1b) of the first-1 electrode pad (241-1) in the first direction (e.g., x direction or -x direction). The width ((W31') of the first portion (241-1a) of the first-1 electrode pad (241-1) in the first direction (e.g., x direction or -x direction) may be equal to the width ((W11') of the first-1 portion (242-1a) of the first portion (242-1) of the second electrode pad (242) in the first direction (e.g., x direction or -x direction). The first light-emitting diode (230A) It can be superimposed on the first part (241-1a) of the first-1 electrode pad (241-1) and the first-1 part (242-1a) of the first part (242-1) of the second electrode pad (242).

[0199] The first-second electrode pad (241-2) may include a first portion (241-2a) that is relatively close to the second electrode pad (242) and a second portion (241-2b) that is relatively far from the second electrode pad (242). The width ((W32') of the first part (241-2a) of the first-second electrode pad (241-2) in the first direction (e.g., x direction or -x direction) may be smaller than the width ((W42') of the second part (241-2b) of the first-second electrode pad (241-2) in the first direction (e.g., x direction or -x direction). The width ((W32') of the first part (241-2a) of the first-second electrode pad (241-2) in the first direction (e.g., x direction or -x direction) may be equal to the width ((W12') of the second-first part (242-2a) of the second part (242-2) of the second electrode pad (242) in the first direction (e.g., x direction or -x direction). The second light-emitting diode (230B) It can be superimposed on the first part (241-2a) of the first-second electrode pad (241-2) and the second-first part (242-2a) of the second part (242-2) of the second electrode pad (242).

[0200] The first-third electrode pad (241-3) may include a first portion (241-3a) that is relatively close to the second electrode pad (242) and a second portion (241-3b) that is relatively far from the second electrode pad (242). The width ((W33') of the first part (241-3a) of the first-third electrode pad (241-3) in the first direction (e.g., x direction or -x direction) may be smaller than the width ((W43') of the second part (241-3b) of the first-third electrode pad (241-3) in the first direction (e.g., x direction or -x direction). The width ((W33') of the first part (241-3a) of the first-third electrode pad (241-3) in the first direction (e.g., x direction or -x direction) may be equal to the width ((W13') of the third-first part (242-3a) of the third part (242-3) of the second electrode pad (242) in the first direction (e.g., x direction or -x direction). The third light-emitting diode (230C) It can be superimposed on the first part (241-3a) of the first-third electrode pad (241-3) and the third-first part (242-3a) of the third part (242-3) of the second electrode pad (242).

[0201] FIGS. 13a to 13g are schematic perspective views illustrating embodiments of an electronic device including a display device.

[0202] Referring to FIG. 13a, a display device according to one embodiment may be utilized 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 in the body part (3110). The display device according to the embodiments may be used as the display part (3120) of the wearable electronic device (3100). As illustrated in FIG. 13a, the wearable electronic device (3100) may be modified. In one embodiment, the wearable electronic device (3100) may be used as a smart watch or a smartphone depending on the user's choice.

[0203] FIG. 13b illustrates a medical electronic device (3200). In one embodiment, the medical electronic device (3200) may include a body part (3210) and a light-emitting part (3220). A display device according to the embodiments may be used as the light-emitting part (3220) of the medical electronic device (3200). The light-emitting part (3220) may emit light of a specific wavelength band (e.g., infrared, visible light, etc.) to the patient's body. In one embodiment, the body part (3210) may have a stretchable fiber material and thus may have a structure that can be worn on the body of the user of the light-emitting part (3220).

[0204] FIG. 13c illustrates an educational electronic device (3300). In one embodiment, the educational electronic device (3300) may include a display unit (3320) provided within a frame (3310). The display unit (3320) may utilize a display device according to the embodiments. The display unit (3320) may provide images such as a sea with waves, a snow-covered mountain, or a volcano with flowing lava, in which case the display unit (3320) may extend in the height direction (e.g., z-direction) to reflect the height of the waves, mountain, or volcano. In some embodiments, a portion of the display unit (3320) may sequentially vary in height along the direction of the lava flow to show the movement of the lava in three dimensions. The educational electronic device (3300) may include a plurality of strokes (3330) placed below the display unit (3320), for example, below the back, so that the display unit (3320) extends in the height direction. As the strokes (3330) move along a third direction (e.g., z direction or -z direction), the image displayed on the display unit (3320) can be implemented to have a three-dimensional height. In one embodiment, haptic information may be provided through the strokes (3330). FIG. 13c describes an educational electronic device (3300), but its use is not limited as long as it provides certain image information.

[0205] The electronic device illustrated in FIGS. 13a to 13c describes an electronic device whose shape may be variable, but the present invention is not limited thereto. As in the embodiments described below, the display device according to the embodiments may be used in an electronic device in which a portion capable of displaying an image (e.g., a screen) is fixed.

[0206] FIG. 13d illustrates a robot (3400) as another electronic device in one embodiment. The robot (3400) can move or perceive objects using a camera unit (3440) and can display a predetermined image to a user through a display unit (3420, 3430). In some embodiments, the display devices according to one embodiment can be assembled to a body frame having a hemispherical shape, as they can be extended in various directions as described above, and thus the robot (3400) may include a hemispherical display unit (3420, 3430).

[0207] FIG. 13e illustrates a vehicle display device (3500) as another electronic device in one embodiment. The vehicle display device (3500) may include a cluster (3510), a Center Information Display (CID) (3520), and / or a co-driver display. Since the display device according to the embodiment can be extended in various directions, it can be used for the cluster (3510), the Center Information Display (CID) (3520), and / or the co-driver display without being constrained by the shape of the vehicle's internal frame.

[0208] FIG. 13e illustrates the cluster (3510), the Center Information Display (CID) (3520), and / or the co-driver display being separated, but the invention is not limited thereto. In another embodiment, two or more selected from the cluster (3510), the Center Information Display (CID) (3520), and the co-driver display may be connected as a single unit.

[0209] In some embodiments, the vehicle display device (3500) may include a button (3540) capable of displaying a predetermined image. Referring to the enlarged view of FIG. 13e, the hemispherical button (3540) may include an object (3542) that provides a sense of use of the button while moving in the z-direction or -z-direction, and a display device placed on the object (3542). In some embodiments, if the object (3542) has a three-dimensionally rounded surface, the display device may also have a three-dimensionally rounded surface.

[0210] FIG. 13f illustrates that an electronic device according to one embodiment is an electronic device for advertising or display (3600). In some embodiments, the electronic device for advertising or display (3600) may be installed on a fixed structure (3610), such as a wall or a column. If the structure (3610) includes an uneven surface as shown in FIG. 13f, the electronic device for advertising or display (3600) may also be placed along the uneven surface of the structure (3610). In some embodiments, the electronic device for advertising or display (3600) may be installed on the structure (3610) using a heat-shrink film or the like.

[0211] FIG. 13g illustrates that an electronic device according to one embodiment is a controller (3700). The controller (3700) may include image-type buttons. For example, the controller (3700) may include first to third button areas (3720, 3730, 3740) in which a portion of the display portion (3710) protrudes in the z-direction or protrudes in the -z-direction (or is recessed in the z-direction). In some embodiments, the first and third button areas (3720, 3740) may protrude in the z-direction, and the second button area (3730) may protrude in the -z-direction (or be recessed in the z-direction).

[0212] It should be understood that the embodiments described herein are to be considered for illustrative purposes only and not for limiting purposes. Descriptions of features or aspects within each embodiment should be considered applicable to similar features or aspects of other embodiments. Although one or more embodiments have been described with reference to the drawings, those skilled in the art will understand that various modifications to the form or details may be made without departing from the spirit and scope defined by the following claims.

Claims

1. A first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction; A second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction, the second electrode pad is, Part 1; A second part adjacent to the first part along the first direction; and Includes a connecting part connecting the first part and the second part; A first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal; and A second light-emitting element electrically connected to the first and second electrode pads through the third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal; A display device in which the width of the connecting portion of the second electrode pad in the second direction is smaller than the width of the first portion of the second electrode pad in the second direction.

2. In Paragraph 1, A common voltage line electrically connected to the second electrode pad; and It further includes an insulating layer between the second electrode pad and the common voltage line; A display device in which the connection portion of the second electrode pad is electrically connected to the common voltage line through the contact hole of the insulating layer.

3. In Paragraph 1, The width of the first portion of the second electrode pad in the first direction is, A display device having substantially the same width as the first-1 electrode pad in the first direction.

4. In Paragraph 1, The first portion of the second electrode pad is, A first-1 portion relatively close to the first-1 electrode pad; and It includes a first-2 portion relatively far from the first-1 electrode pad; and A display device in which the width of the first-1 portion in the first direction is smaller than the width of the first-2 portion in the first direction.

5. In Paragraph 4, A display device in which the width of the second portion of the second electrode pad in the first direction is greater than the width of the first-1 portion of the first portion of the second electrode pad in the first direction.

6. In Paragraph 4, The second portion of the second electrode pad is, A 2-1 portion relatively close to the above 1-2 electrode pad; and It includes a second-2 portion relatively far from the first-2 electrode pad; and A display device in which the width of the 2-1 portion in the first direction is smaller than the width of the 2-2 portion in the first direction.

7. In Paragraph 4, The width in the first direction of the first portion of the first-1 electrode pad, which is relatively close to the first portion of the second electrode pad, is A display device having a width in the first direction of the second part of the first-1 electrode pad that is relatively far from the first part of the second electrode pad.

8. In Paragraph 7, The width of the first portion of the first electrode pad in the first direction is, A display device having substantially the same width as the first-1 portion of the first portion of the second electrode pad in the first direction.

9. In Paragraph 1, The above second bump metal is a display device comprising gold, nickel, or indium.

10. In Paragraph 7, A display device in which the first bump metal and the third bump metal each comprise the same material as the second bump metal.

11. A display device comprising a display area and a non-display area outside the display area, A first island section located in the above-mentioned display area; A first bridge section connecting the first island section and another first island section adjacent to the first island section; First electrode pads disposed in the first island portion and spaced apart from each other along a first direction; A second electrode pad disposed in the first island portion and spaced apart from the first electrode pads along a second direction intersecting the first direction, - the second electrode pad is, A first part, a second part, and a third part spaced apart from each other along the first direction above; A first connecting part connecting the first part and the second part; and A second connecting part connecting the second part and the third part; and Light-emitting elements each electrically connected to the first electrode pads and each electrically connected to the first to third portions of the second electrode pad; A display device in which the width of the first connecting portion in the second direction and the width of the second connecting portion in the second direction are each smaller than the width of the second portion of the second electrode pad in the second direction.

12. In Paragraph 11, It further includes a common voltage line electrically connected to the second electrode pad, and A display device in which the connection point between the second electrode pad and the common voltage line corresponds to at least one of the first connection portion and the second connection portion of the second electrode pad.

13. In Paragraph 11, The first portion of the second electrode pad is, A first-1 portion relatively close to the first electrode pads; and It includes a first-2 portion relatively far from the first electrode pads; A display device in which the width of the first-1 portion in the first direction is smaller than the width of the first-2 portion in the first direction.

14. In Paragraph 13, A display device in which the width of the second portion of the second electrode pad in the first direction is greater than the width of the first-1 portion of the first portion of the second electrode pad in the first direction.

15. In Paragraph 13, The second portion of the second electrode pad is, A second-1 portion relatively close to the first electrode pads; and It includes a second-2 portion relatively far from the first electrode pads; A display device in which the width of the 2-1 portion in the first direction is smaller than the width of the 2-2 portion in the first direction.

16. In Paragraph 13, Among the first electrode pads above, the first electrode pad adjacent to the first portion of the second electrode pad is, It includes a portion relatively close to the first portion of the second electrode pad and a portion relatively far from the first portion of the second electrode pad. The width in the first direction of the portion of the second electrode pad that is relatively close to the first portion is, A display device having a width in the first direction of a portion relatively far from the first portion of the second electrode pad that is smaller than the width of the second portion.

17. In Paragraph 11, The above second bump metal is a display device comprising gold, nickel, or indium.

18. As an electronic device, the electronic device is, A display device is included, wherein the display device is, A first-1 electrode pad and a first-2 electrode pad spaced apart from each other along a first direction; A second electrode pad spaced apart from the first-1 electrode pad and the first-2 electrode pad along a second direction intersecting the first direction, and comprising a first portion, a second portion adjacent to the first portion along the first direction, and a connecting portion connecting the first portion and the second portion; A first light-emitting element electrically connected to the first-1 electrode pad through a first bump metal and electrically connected to the first portion of the second electrode pad through a second bump metal; and A second light-emitting element electrically connected to the first and second electrode pads through the third bump metal and electrically connected to the second portion of the second electrode pad through the second bump metal; An electronic device in which the width of the connecting portion of the second electrode pad in the second direction is smaller than the width of the first portion of the second electrode pad in the second direction.

19. In Paragraph 18, The above display device is, A common voltage line electrically connected to the second electrode pad; and It further includes an insulating layer between the second electrode pad and the common voltage line; An electronic device in which the connection portion of the second electrode pad is electrically connected to the common voltage line through the contact hole of the insulating layer.

20. In Paragraph 20, The electronic device wherein the first bump metal, the second bump metal, and the third bump metal each comprise gold, nickel, or indium.

Images