Display device

Abstract

A display device according to an embodiment of the present invention includes: a plurality of pixels, each of the plurality of pixels includes a light-emitting region; and a dam arranged between the light-emitting regions of the pixels to surround each of the light-emitting regions. Each of the pixels includes: a first electrode and a second electrode, which are separated from each other and arranged in the light-emitting region; and a plurality of light-emitting diodes, which are electrically connected to the first electrode and the second electrode and arranged between the first electrode and the second electrode. The first electrode includes: a first electrode portion, which is arranged in the light-emitting region to be adjacent to a first side of the second electrode; a second electrode portion, which is arranged in the light-emitting region to be adjacent to a second side of the second electrode; and a third electrode portion, which is arranged between the first electrode portion and the second electrode portion, connects the first electrode portion and the second electrode portion, and is arranged in the light-emitting region to be adjacent to a third side of the second electrode.

Description

Technical Field

[0001] Various embodiments of the present disclosure relate to a display device. Background Art

[0002] Recently, a technology for manufacturing ultra-small light-emitting elements using a reliable inorganic crystal structure material and manufacturing a light-emitting device using the light-emitting elements has been developed. For example, a technology for manufacturing a plurality of ultra-small light-emitting elements having a small size corresponding to a range from nanometer to micrometer level and manufacturing various light-emitting devices such as pixels of a display device using the ultra-small light-emitting elements has been developed. Summary of the invention

[0003] Technical issues

[0004] Various embodiments of the present disclosure are directed to a display device having a pixel including a plurality of light emitting elements.

[0005] Technical Solution

[0006] According to one aspect of the present disclosure, a display device may include: a plurality of pixels, each including a light-emitting region; and a dam, disposed between the light-emitting regions of the pixels to surround each of the light-emitting regions. Each pixel may include: a first electrode and a second electrode, disposed in the light-emitting region to be separated from each other; and a plurality of light-emitting elements, electrically connected between the first electrode and the second electrode. The first electrode may include: a first electrode portion, disposed in the light-emitting region to be adjacent to a first side of the second electrode; a second electrode portion, disposed in the light-emitting region to be adjacent to a second side of the second electrode; and a third electrode portion, configured to connect the first electrode portion and the second electrode portion between the first electrode portion and the second electrode portion, and disposed in the light-emitting region to be adjacent to a third side of the second electrode.

[0007] Each of the first electrode portion, the second electrode portion, and the third electrode portion may be spaced apart from the second electrode by a distance equal to or smaller than a length of each of the light emitting elements.

[0008] Each of the first electrode portion, the second electrode portion, and the third electrode portion may be spaced apart from the second electrode by the same distance.

[0009] The first electrode portion and the second electrode portion may extend in a first direction in the light emitting region to be parallel to each other, and the third electrode portion may extend in a second direction crossing the first direction in the light emitting region.

[0010] The first electrode portion, the second electrode portion, and the third electrode portion may be integrally connected to each other.

[0011] The first electrode can be bent so that the area facing the second electrode has a curved surface at the boundary between the first electrode portion, the second electrode portion and the third electrode portion, and the second electrode can have a curved surface corresponding to the shape of the first electrode in the area facing the curved surface of the first electrode.

[0012] The first electrode portion and the second electrode portion may be symmetrical to each other, and the second electrode is disposed between the first electrode portion and the second electrode portion.

[0013] The second electrode may include: a main electrode portion, arranged between the first electrode portion and the second electrode portion and surrounded by the first electrode; and a sub-electrode portion, connected to the first end of the main electrode portion and extending in a direction different from the direction along which the main electrode portion extends to face the first end of each of the first electrode portion and the second electrode portion.

[0014] The first and second electrode portions and the main electrode portion may extend in a first direction in the light emitting region to be parallel to each other, and the third electrode portion and the sub-electrode portion may extend in a second direction crossing the first direction in the light emitting region to be parallel to each other.

[0015] The second electrode may include a circular or elliptical main electrode portion, and the first electrode portion, the second electrode portion, and the third electrode portion may surround the main electrode portion while having a shape corresponding to that of the main electrode portion.

[0016] The second electrode may further include a sub-electrode portion connected to the main electrode portion and disposed in the light emitting region to face a first end of each of the first electrode portion and the second electrode portion.

[0017] Each of the light emitting elements may include: a first end overlapping the first electrode and electrically connected to the first electrode; and a second end overlapping the second electrode and electrically connected to the second electrode.

[0018] Each of the pixels may also include: a third electrode, which is overlapped with the first electrode while having a shape corresponding to that of the first electrode, and is electrically connected to the first end of the light-emitting element through the first electrode; and a fourth electrode, which is overlapped with the second electrode while having a shape corresponding to that of the second electrode, and is electrically connected to the second end of the light-emitting element through the second electrode.

[0019] The third electrode may be electrically connected to a first line to which a first power or a first driving signal is supplied, and the fourth electrode may be electrically connected to a second line to which a second power or a second driving signal is supplied.

[0020] Each of the pixels may also include: a first partition wall, which is arranged under the third electrode while having a width narrower than the width of the third electrode and having a shape corresponding to the shape of the third electrode; and a second partition wall, which is arranged under the fourth electrode while having a width narrower than the width of the fourth electrode and having a shape corresponding to the shape of the fourth electrode.

[0021] According to one aspect of the present disclosure, a display device may include: a plurality of pixels, each including a light-emitting region; and a dam, arranged between the light-emitting regions of the pixels to surround each of the light-emitting regions. Each pixel may include: a first electrode and a second electrode, arranged in the light-emitting region to be separated from each other; and a plurality of light-emitting elements, electrically connected between the first electrode and the second electrode. The second electrode may include: a main electrode portion, arranged in the light-emitting region to be surrounded by the first electrode; and a sub-electrode portion, connected to a first end of the main electrode portion, and extending in a direction different from the direction in which the main electrode portion extends in the light-emitting region to face the opposite end of the first electrode.

[0022] The first electrode may include: a first electrode portion, which is arranged in the light-emitting region to be adjacent to a first side of a main electrode portion; a second electrode portion, which is arranged in the light-emitting region to be adjacent to a second side of the main electrode portion; and a third electrode portion, which is configured to connect the first electrode portion and the second electrode portion between the first electrode portion and the second electrode portion, and is arranged in the light-emitting region to be adjacent to a third side of the main electrode portion.

[0023] Each of the first electrode portion, the second electrode portion, and the third electrode portion may be spaced apart from the second electrode by a distance equal to or smaller than a length of each of the light emitting elements.

[0024] Each of the first electrode portion, the second electrode portion, and the third electrode portion may be spaced apart from the second electrode by the same distance.

[0025] Each of the pixels may also include: a third electrode, which is overlapped with the first electrode while having a shape corresponding to that of the first electrode, and is electrically connected to the first end of the light-emitting element through the first electrode; and a fourth electrode, which is overlapped with the second electrode while having a shape corresponding to that of the second electrode, and is electrically connected to the second end of the light-emitting element through the second electrode.

[0026] Beneficial Effects

[0027] A display device including pixels according to various embodiments of the present disclosure may form a light source unit by more efficiently utilizing a light emitting element supplied to a light emitting region of each pixel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1a and Figure 1b are a perspective view and a cross-sectional view showing a light emitting element according to an embodiment of the present disclosure.

[0029] Figure 2a and Figure 2b are a perspective view and a cross-sectional view showing a light emitting element according to an embodiment of the present disclosure.

[0030] Figure 3a and Figure 3b are a perspective view and a cross-sectional view showing a light emitting element according to an embodiment of the present disclosure.

[0031] Figure 4 is a plan view showing a display device according to an embodiment of the present disclosure.

[0032] Figure 5a to Figure 5c Each is a circuit diagram showing a light emitting device according to an embodiment of the present disclosure, for example, showing different examples of effective pixels constituting each light emitting device.

[0033] Figure 6a and Figure 6b Each is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of pixels constituting the light emitting device.

[0034] Figure 7a It is shown Figure 6a and Figure 6b A plan view of a first alignment electrode and a second alignment electrode.

[0035] Figure 7b It is shown Figure 6a and Figure 6b A plan view of a first contact electrode and a second contact electrode.

[0036] Figure 8a and Figure 8b Each of them shows a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b A cross-sectional view of an example of a cross section taken along line II'.

[0037] Figure 9a and Figure 9b Each of them shows a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b Cross-sectional views of other examples of the cross-section taken along line II'.

[0038] Fig.10 FIG. 2 is a diagram showing a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b A cross-sectional view of an example of a cross section corresponding to line II-II'.

[0039] Fig.11 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of pixels constituting the light emitting device.

[0040] Fig.12a It is shown Fig.11 A plan view of a first alignment electrode and a second alignment electrode.

[0041] Figure 12b It is shown Fig.11 A plan view of a first contact electrode and a second contact electrode.

[0042] Fig.13 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of pixels constituting the light emitting device.

[0043] Fig.14a It is shown Fig.13 A plan view of a first alignment electrode and a second alignment electrode.

[0044] Fig.14b It is shown Fig.13 A plan view of a first contact electrode and a second contact electrode.

[0045] Fig.15 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of pixels constituting the light emitting device.

[0046] Fig.16a It is shown Fig.15 A plan view of a first alignment electrode and a second alignment electrode.

[0047] Fig.16b It is shown Fig.15 A plan view of a first contact electrode and a second contact electrode.

[0048] Fig.17 and Fig.18 Each is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing different examples of pixels constituting the light emitting device. DETAILED DESCRIPTION

[0049] Since the embodiments of the present disclosure can be variously modified in many different forms, reference will now be made in detail to the various embodiments of the present disclosure, specific examples of which are shown in the accompanying drawings and described below. However, the present disclosure is not limited to the following embodiments and can be modified into various forms.

[0050] Some elements that are not directly related to the features of the present disclosure may be omitted in the drawings to clearly explain the present disclosure. In addition, the sizes, proportions, etc. of some elements in the drawings may be slightly exaggerated. It should be noted that throughout the drawings, the same reference numerals are used to represent the same or similar elements, and repeated descriptions will be omitted.

[0051] It will be understood that, although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. It will also be understood that, when the terms "comprise", "include", "have", etc. are used in this specification, it is indicated that the stated features, wholes, steps, operations, elements, components and / or combinations thereof exist, but the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof are not excluded. In addition, when a first component or part is disposed on a second component or part, the first component or part may not only be directly on the second component or part, but a third component or part may be placed between them. In addition, the terms "position", "direction", etc. used in the following description are defined in relative terms, and it should be noted that they can be changed to opposite positions or directions according to the viewing angle or direction.

[0052] In order to describe the present disclosure in detail, embodiments of the present disclosure and required details are described with reference to the accompanying drawings so that a person skilled in the art with ordinary knowledge in the technical field to which the present disclosure belongs can easily practice the present disclosure. In addition, as long as there is no specific mention in a sentence, a singular form may also include a plural form.

[0053] Figure 1a , Figure 1b , Figure 2a , Figure 2b , Figure 3a and Figure 3b 1 is a perspective view and a cross-sectional view showing a light emitting element LD according to an embodiment of the present disclosure. Figures 1a to 3b , a rod-type light emitting element LD having a cylindrical shape is shown, but the type and / or shape of the light emitting element LD according to the present disclosure is not limited thereto.

[0054] First, refer to Figure 1a and Figure 1b , the light emitting element LD according to an embodiment of the present disclosure includes a first semiconductor layer 11, a second semiconductor layer 13, and an active layer 12 disposed between the first semiconductor layer 11 and the second semiconductor layer 13. For example, the light emitting element LD may be configured as a stacked body formed by sequentially stacking the first semiconductor layer 11, the active layer 12, and the second semiconductor layer 13 in the length direction.

[0055] In an embodiment, the light emitting element LD may be provided in the form of a rod extending in one direction. If the direction in which the light emitting element LD extends is defined as a length direction, the light emitting element LD may have a first end and a second end with respect to the length direction.

[0056] In an embodiment, one of the first semiconductor layer 11 and the second semiconductor layer 13 may be disposed on a first end of the light emitting element LD, and the other of the first semiconductor layer 11 and the second semiconductor layer 13 may be disposed on a second end of the light emitting element LD.

[0057] In the embodiment, the light emitting element LD may be a rod-type light emitting diode manufactured in the form of a rod. In this specification, the term "rod-type" includes a rod-like shape and a strip-like shape (such as a cylindrical shape and a prism-like shape) extending in the length direction (i.e., having an aspect ratio greater than 1), and its cross-sectional shape is not limited to a specific shape. For example, the length L of the light emitting element LD may be greater than the diameter D of the light emitting element LD (or the width of the cross section of the light emitting element LD).

[0058] In an embodiment, the light emitting element LD may have a small size corresponding to a range from nanometer level to micrometer level. For example, the light emitting element LD may have a diameter D and / or a length L in a range from nanometer level to micrometer level. However, in the present disclosure, the size of the light emitting element LD is not limited thereto. For example, the size of the light emitting element LD may be changed in various ways according to the design conditions of various devices (for example, a display device using a light emitting device using the light emitting element LD as a light source).

[0059] The first semiconductor layer 11 may include, for example, at least one n-type semiconductor layer. For example, the first semiconductor layer 11 may include an n-type semiconductor layer, which includes any one of InAlGaN, GaN, AlGaN, InGaN, AlN, and InN semiconductor materials and is doped with a first conductive dopant such as Si, Ge, or Sn. However, the material forming the first semiconductor layer 11 is not limited thereto, and the first semiconductor layer 11 may be formed of various other materials.

[0060] The active layer 12 may be disposed on the first semiconductor layer 11 and have a single quantum well structure or a multi-quantum well structure. In an embodiment, a cladding layer (not shown) doped with a conductive dopant may be formed above and / or below the active layer 12. For example, the cladding layer may be formed of an AlGaN layer or an InAlGaN layer. In an embodiment, the active layer 12 may be formed using a material such as AlGaN or AlInGaN, and various other materials may be used to form the active layer 12.

[0061] If a voltage equal to or greater than the threshold voltage is applied to opposite ends of the light emitting element LD, the light emitting element LD emits light by combining electron-hole pairs in the active layer 12. Since the light emission of the light emitting element LD can be controlled based on the aforementioned principle, the light emitting element LD can be used as a light source for various light emitting devices and pixels of a display device.

[0062] The second semiconductor layer 13 may be disposed on the active layer 12 and include a semiconductor layer having a type different from that of the first semiconductor layer 11. For example, the second semiconductor layer 13 may include at least one p-type semiconductor layer. For example, the second semiconductor layer 13 may include a p-type semiconductor layer including any one of InAlGaN, GaN, AlGaN, InGaN, AlN, and InN semiconductor materials and doped with a second conductive dopant such as Mg. However, the material forming the second semiconductor layer 13 is not limited thereto, and the second semiconductor layer 13 may be formed of various other materials.

[0063] In an embodiment, the light emitting element LD may further include an insulating film INF disposed on the surface of the light emitting element LD. The insulating film INF may be formed on the surface of the light emitting element LD to surround at least the outer circumferential surface of the active layer 12. In addition, the insulating film INF may also surround a region of each of the first semiconductor layer 11 and the second semiconductor layer 13. The insulating film INF may allow opposite ends of the light emitting element LD having different polarities to be exposed to the outside. For example, the insulating film INF may expose one end of each of the first semiconductor layer 11 and the second semiconductor layer 13 disposed on the corresponding opposite ends of the light emitting element LD with respect to the length direction, for example, both surfaces of a cylinder ( Figure 1a and Figure 1b The top surface and bottom surface of the light emitting element LD in the embodiment of the present invention are covered instead of being covered.

[0064] In an embodiment, the insulating film INF may include SiO 2 、Si 3 N 4 、Al 2 O 3 and TiO 2 In other words, the material forming the insulating film INF is not limited to a specific material, and the insulating film INF can be formed of various well-known insulating materials.

[0065] In an embodiment, the light emitting element LD may include additional other components in addition to the first semiconductor layer 11, the active layer 12, the second semiconductor layer 13 and / or the insulating film INF. For example, the light emitting element LD may also include at least one fluorescent layer, at least one active layer, at least one semiconductor layer and / or at least one electrode layer disposed on one end of the first semiconductor layer 11, the active layer 12 and / or the second semiconductor layer 13.

[0066] For example, Figure 2a and Figure 2b As shown in , the light emitting element LD may further include at least one electrode layer 14 disposed on the first end of the second semiconductor layer 13. Figure 3a and Figure 3b As shown in , the light emitting element LD may further include at least one electrode layer 15 disposed on the first end of the first semiconductor layer 11 .

[0067] Each of the electrode layers 14 and 15 may be an ohmic contact electrode, but is not limited thereto. In addition, each of the electrode layers 14 and 15 may include a metal or a metal oxide. For example, Cr, Ti, Al, Au, Ni, ITO, IZO, ITZO, and oxides or alloys thereof may be used alone or in combination with each other. In an embodiment, the electrode layers 14 and 15 may be substantially transparent or translucent. Therefore, the light generated from the light emitting element LD may be emitted to the outside of the light emitting element LD after passing through the electrode layers 14 and 15.

[0068] In an embodiment, the insulating film INF may at least partially surround the outer surfaces of the electrode layers 14 and 15, or may not surround them. In other words, the insulating film INF may be selectively formed on the surfaces of the electrode layers 14 and 15. In addition, for example, the insulating film INF may be formed to expose opposite ends of the light emitting element LD having different polarities, and may expose at least one region of each of the electrode layers 14 and 15. Alternatively, in other embodiments, the insulating film INF may not be provided.

[0069] If the insulating film INF is provided on the surface of the light emitting element LD (specifically, on the surface of the active layer 12), the active layer 12 can be prevented from being short-circuited with at least one electrode (not shown) (for example, at least one of the contact electrodes connected to the opposite ends of the light emitting element LD, etc.). Therefore, the electrical stability of the light emitting element LD can be ensured.

[0070] In addition, since the insulating film INF is formed on the surface of the light emitting element LD, the occurrence of defects on the surface of the light emitting element LD can be minimized, thereby improving the life and efficiency of the light emitting element LD. In addition, if the insulating film INF is formed on each light emitting element LD, even when a plurality of light emitting elements LD are disposed adjacent to each other, an undesirable short circuit between the light emitting elements LD can be prevented.

[0071] In an embodiment of the present disclosure, a surface treatment process may be performed to manufacture the light emitting element LD. For example, the light emitting element LD may be surface treated so that when a plurality of light emitting elements LD are mixed with a fluid solution (or solvent) and then supplied to each light emitting region (e.g., the light emitting region of each pixel), the light emitting element LD may be uniformly distributed in the solution instead of being unevenly aggregated.

[0072] The light-emitting device including the above-mentioned light-emitting element LD can be used in various devices including display devices that require light sources. For example, at least one ultra-small light-emitting element LD (for example, multiple ultra-small light-emitting elements LD each having a size ranging from nanometers to micrometers) can be arranged in each pixel area of ​​the display panel to form a light source (or light source unit) of the corresponding pixel using the ultra-small light-emitting element LD. In addition, the application field of the light-emitting element LD according to the present disclosure is not limited to display devices. For example, the light-emitting element LD can also be used in various devices (such as lighting devices) that require light sources.

[0073] Figure 4 is a plan view showing a display device according to an embodiment of the present disclosure. In the embodiment, Figure 4 A display device (specifically, a display panel PNL provided in the display device) is shown as a reference. Figures 1a to 3b The light emitting element LD is described as an example of a means of a light source. For example, a pixel PXL of a display panel PNL may include at least one light emitting element LD.

[0074] For illustration purposes, Figure 4 The structure of the display panel PNL focusing on the display area DA is simply shown. In some embodiments, although not shown, at least one driving circuit unit (eg, at least one of a scan driver and a data driver) and / or a plurality of lines may be further provided in the display panel PNL.

[0075] Reference Figure 4 , the display panel PNL according to an embodiment of the present disclosure may include a base layer BSL and a plurality of pixels PXL disposed on the base layer BSL. More specifically, the display panel PNL and the base layer BSL for forming the display panel PNL may include a display area DA for displaying an image and a non-display area NDA formed in a predetermined area other than the display area DA. The pixels PXL may be disposed in the display area DA on the base layer BSL.

[0076] In an embodiment, the display area DA may be disposed in a central portion of the display panel PNL, and the non-display area NDA may be disposed in a peripheral portion of the display panel PNL in such a manner as to surround the display area DA. The positions of the display area DA and the non-display area NDA are not limited thereto, and the positions of the display area DA and the non-display area NDA may be changed. Such a display area DA may constitute a screen on which an image is displayed.

[0077] The base layer BSL may form a base member of the display panel PNL. In an embodiment, the base layer BSL may be a rigid or flexible substrate or film, and the material or properties of the base layer BSL are not particularly limited. For example, the base layer BSL may be a rigid substrate made of glass or tempered glass, a soft substrate (or film) made of plastic or metal material, or at least one insulating layer, and the material and / or properties of the base layer BSL are not particularly limited.

[0078] In addition, the base layer BSL may be transparent, but is not limited thereto. For example, the base layer BSL may be a transparent, translucent, opaque, or reflective base member.

[0079] One area on the base layer BSL may be defined as a display area DA in which the pixels PXL are disposed, and another area on the base layer BSL may be defined as a non-display area NDA. For example, the base layer BSL may include a display area DA including a plurality of pixel areas in which corresponding pixels PXL are formed, and a non-display area NDA disposed outside the display area DA. Various lines and / or internal circuit units connected to the pixels PXL in the display area DA may be disposed in the non-display area NDA.

[0080] In an embodiment, the pixels PXL may be distributed and arranged in the display area DA. In an embodiment, the pixels PXL may be arranged in a stripe or PenTile arrangement structure in the display area DA. However, the present disclosure is not limited thereto. For example, the pixels PXL may be arranged in the display area DA in various well-known arrangement structures.

[0081] Each pixel PXL may include at least one light source driven by a predetermined control signal (eg, a scan signal and a data signal) and / or predetermined power (eg, a first power and a second power), for example, according to Figures 1a to 3b The light emitting element LD of any one of the embodiments of the present invention. For example, each pixel PXL may include at least one ultra-small light emitting element LD having a small size ranging from nanometer level to micrometer level. For example, each pixel PXL may include a plurality of ultra-small light emitting elements LD, which are connected in parallel between pixel electrodes and / or power lines to constitute a light source or light source unit of the corresponding pixel PXL, and each has a rod shape.

[0082] In an embodiment, each pixel PXL may be formed by an effective pixel. However, the type, structure and / or driving method of the pixel PXL that can be applied to the display device according to the present disclosure is not particularly limited. For example, each pixel PXL may be constructed as a pixel of a passive or active light-emitting display device having various known structures and / or driving methods.

[0083] Figure 5a to Figure 5c 1 and 2 show different examples of effective pixels PXL constituting each light emitting device. Figure 5a to Figure 5c Each pixel PXL shown in FIG. 1 may be set to Figure 4 The pixels PXL may have substantially the same or similar structures.

[0084] First, refer to Figure 5a The pixel PXL according to an embodiment of the present disclosure includes a light source unit LSU for generating light having brightness corresponding to a data signal. The pixel PXL may further include a pixel circuit PXC configured to drive the light source unit LSU.

[0085] In an embodiment, the light source unit LSU may include a plurality of light emitting elements LD electrically connected to each other between a first power source VDD and a second power source VSS. In an embodiment, the light emitting elements LD may be connected in parallel to each other, without limitation thereto. For example, in another embodiment, the plurality of light emitting elements LD may be connected in a series / parallel hybrid structure between the first power source VDD and the second power source VSS.

[0086] In an embodiment, the first power supply VDD and the second power supply VSS may have different potentials so that the light emitting element LD can emit light. For example, the first power supply VDD may be set as a high potential power supply, and the second power supply VSS may be set as a low potential power supply. Here, during at least the light emitting period of the pixel PXL, the potential difference between the first power supply VDD and the second power supply VSS may be set to a threshold voltage of the light emitting element LD or more.

[0087] Although Figure 5a An embodiment is shown in which the light emitting elements LD of the light source unit LSU forming each pixel PXL are connected in parallel to each other along the same direction (e.g., in the forward direction) between the first power supply VDD and the second power supply VSS, but the present disclosure is not limited thereto. For example, in another embodiment, some of the light emitting elements LD may be connected to each other along the first direction (e.g., in the forward direction) between the first power supply VDD and the second power supply VSS, and other light emitting elements LD may be connected to each other in the second direction (e.g., in the reverse direction). Alternatively, in another embodiment, at least one pixel PXL may include only a single light emitting element LD (e.g., a single effective light emitting element connected in the forward direction between the first power supply VDD and the second power supply VSS).

[0088] In an embodiment, a first end of each of the light emitting elements LD constituting each light source unit LSU may be commonly connected to the pixel circuit PXC through one electrode of the light source unit LSU (e.g., a first alignment electrode and / or a first contact electrode of each pixel PXL), and may be connected to the first power supply VDD through the pixel circuit PXC and the first power line PL1. In addition, a second end of each of the light emitting elements LD may be commonly connected to the second power supply VSS through another electrode of the light source unit LSU (e.g., a second alignment electrode and / or a second contact electrode of each pixel PXL) and the second power line PL2.

[0089] Each light source unit LSU may emit light having brightness corresponding to a driving current supplied thereto through a corresponding pixel circuit PXC. Thus, a predetermined image may be displayed in the display area DA.

[0090] The pixel circuit PXC may be connected to the scan line Si and the data line Dj of the corresponding pixel PXL. For example, if the pixel PXL is disposed on the i-th row (i is a natural number) and the j-th column (j is a natural number) of the display area DA, the pixel circuit PXC of the pixel PXL may be connected to the i-th scan line Si and the j-th data line Dj of the display area DA. In an embodiment, the pixel circuit PXC may include a first transistor T1, a second transistor T2, and a storage capacitor Cst.

[0091] The first transistor (driving transistor) T1 is connected between the first power source VDD and the light source unit LSU. A gate electrode of the first transistor T1 is connected to a first node N1. The first transistor T1 controls a driving current supplied to the light source unit LSU in response to a voltage of the first node N1.

[0092] The second transistor (switching transistor) T2 is connected between the data line Dj and the first node N1. The gate electrode of the second transistor T2 is connected to the scan line Si. When a scan signal of a gate-on voltage (e.g., a low-level voltage) is supplied from the scan line Si, the second transistor T2 is turned on to electrically connect the first node N1 to the data line Dj.

[0093] During each frame period, a data signal of a corresponding frame is supplied to the data line Dj. The data signal is transmitted to the first node N1 via the second transistor T2. Thus, a voltage corresponding to the data signal is charged to the storage capacitor Cst.

[0094] A first electrode of the storage capacitor Cst is connected to the first power source VDD, and a second electrode of the storage capacitor Cst is connected to the first node N1. Such a storage capacitor Cst charges a voltage corresponding to a data signal supplied to the first node N1 during each frame period.

[0095] Although in Figure 5aIn the embodiment, the transistors (eg, the first transistor T1 and the second transistor T2) included in the pixel circuit PXC have been shown to be formed of P-type transistors, but the present disclosure is not limited thereto. In other words, at least one of the first transistor T1 and the second transistor T2 may be changed to an N-type transistor.

[0096] For example, Figure 5b As shown in , both the first transistor T1 and the second transistor T2 may be formed of N-type transistors. In this case, the gate-on voltage of the scanning signal for writing the data signal supplied to the data line Dj in the pixel PXL in each frame period may be a high-level voltage. Similarly, the voltage of the data signal for turning on the first transistor T1 may be a voltage lower than that of the gate-on voltage. Figure 5a The waveform voltage of the embodiment is opposite to the waveform voltage. As an example, in Figure 5b In the embodiment, as the grayscale value to be represented increases, a data signal with a higher voltage level may be supplied.

[0097] In addition to the connection positions of some circuit elements and the voltage levels of control signals (e.g., scan signals and data signals) being changed according to the change of transistor types, Figure 5b The pixel PXL shown in FIG. 1 is similar in construction and operation to the Figure 5a The pixels PXL are basically similar. Therefore, Figure 5b A detailed description of the pixel PXL.

[0098] The structure of the pixel circuit PXC is not limited to Figure 5a and Figure 5b In other words, the pixel circuit PXC may be formed by a well-known pixel circuit that may have various structures and / or be operated by various driving schemes. For example, the pixel circuit PXC may be formed by a well-known pixel circuit that may have various structures and / or be operated by various driving schemes. Figure 5c The embodiment shown in FIG. 1 is constructed in the same manner.

[0099] Reference Figure 5c , the pixel circuit PXC can be connected not only to the scan line Si in the corresponding horizontal line, but also to at least one other scan line (or control line). For example, the pixel circuit PXC of the pixel PXL arranged on the i-th row of the display area DA can also be connected to the i-1th scan line Si-1 and / or the i+1th scan line Si+1. In an embodiment, the pixel circuit PXC can be connected not only to the first power supply VDD and the second power supply VSS, but also to other third power supplies. For example, the pixel circuit PXC can also be connected to the initialization power supply Vint. In an embodiment, the pixel circuit PXC may include a first transistor T1 to a seventh transistor T7 and a storage capacitor Cst.

[0100] The first transistor T1 is connected between the first power source VDD and the light source unit LSU. For example, the first electrode (e.g., source electrode) of the first transistor T1 may be connected to the first power source VDD through the fifth transistor T5 and the first power line PL1, and the second electrode (e.g., drain electrode) of the first transistor T1 may be connected to the first electrode of the light source unit LSU (e.g., the first alignment electrode and / or the first contact electrode of the corresponding pixel PXL) via the sixth transistor T6. The gate electrode of the first transistor T1 is connected to the first node N1. The first transistor T1 controls the driving current supplied to the light source unit LSU in response to the voltage of the first node N1.

[0101] The second transistor T2 is connected between the data line Dj and the first electrode of the first transistor T1. The gate electrode of the second transistor T2 is connected to the corresponding scan line Si. When a scan signal of a gate-on voltage is supplied from the scan line Si, the second transistor T2 can be turned on to electrically connect the data line Dj to the first electrode of the first transistor T1. Therefore, if the second transistor T2 is turned on, the data signal supplied from the data line Dj is transmitted to the first transistor T1.

[0102] The third transistor T3 is connected between the second electrode of the first transistor T1 and the first node N1. The gate electrode of the third transistor T3 is connected to the corresponding scan line Si. When a scan signal of a gate-on voltage is supplied from the scan line Si, the third transistor T3 is turned on to connect the first transistor T1 in the form of a diode.

[0103] The fourth transistor T4 is connected between the first node N1 and the initialization power supply Vint. The gate electrode of the fourth transistor T4 is connected to the previous scan line, for example, the i-1th scan line Si-1. When the scan signal of the gate-on voltage is supplied to the i-1th scan line Si-1, the fourth transistor T4 is turned on, so that the voltage of the initialization power supply Vint is transmitted to the first node N1. In an embodiment, when the first transistor T1 is a P-type transistor, the voltage of the initialization power supply Vint for initializing the gate voltage of the first transistor T1 may be less than or equal to the lowest voltage of the data signal.

[0104] The fifth transistor T5 is connected between the first power supply VDD and the first transistor T1. The gate electrode of the fifth transistor T5 is connected to the corresponding emission control line, for example, the i-th emission control line Ei. The fifth transistor T5 is turned off when the emission control signal of the gate cut-off voltage (for example, a high level voltage) is supplied to the emission control line Ei, and is turned on in other cases.

[0105] The sixth transistor T6 is connected between the first transistor T1 and the second node N2 electrically connected to the light source unit LSU. The gate electrode of the sixth transistor T6 is connected to the corresponding emission control line, for example, the i-th emission control line Ei. The sixth transistor T6 is turned off when the emission control signal of the gate-off voltage is supplied to the emission control line Ei, and is turned on in other cases.

[0106] The seventh transistor T7 is connected between the second node N2 electrically connected to the first electrode of the light source unit LSU (for example, the first alignment electrode and / or the first contact electrode of the corresponding pixel PXL) and the initialization power supply Vint. The gate electrode of the seventh transistor T7 is connected to any one scan line of the subsequent stage, for example, to the i+1 scan line Si+1. When the scan signal of the gate-on voltage is supplied to the i+1 scan line Si+1, the seventh transistor T7 is turned on so that the voltage of the initialization power supply Vint is supplied to the first electrode of the light source unit LSU. Therefore, during the initialization period when the voltage of the initialization power supply Vint is transmitted to the light source unit LSU, the voltage of the first electrode of the light source unit LSU is initialized. In addition, the control signal for controlling the operation of the seventh transistor T7 can be changed differently. For example, in another embodiment, the gate electrode of the seventh transistor T7 can be connected to the scan line in the corresponding horizontal line, that is, the i-th scan line Si. In this case, when the scan signal of the gate-on voltage is supplied to the i-th scan line Si, the seventh transistor T7 can be turned on so that the voltage of the initialization power supply Vint can be supplied to the first electrode of the light source unit LSU.

[0107] The storage capacitor Cst is connected between the first power source VDD and the first node N1. The storage capacitor Cst stores a voltage corresponding to both the data signal supplied to the first node N1 during each frame period and the threshold voltage of the first transistor T1.

[0108] Although in Figure 5c , the transistors (eg, the first to seventh transistors T1 to T7) included in the pixel circuit PXC have been shown to be formed of P-type transistors, but the present disclosure is not limited thereto. For example, at least one of the first to seventh transistors T1 to T7 may be changed to an N-type transistor.

[0109] The structure of the pixel PXL applicable to the present disclosure is not limited to Figure 5a to Figure 5cIn the embodiment shown in , each pixel PXL can have various well-known structures. For example, the pixel circuit PXC included in each pixel PXL can be formed by a well-known pixel circuit that can have various structures and / or operate through various driving schemes. In another embodiment of the present disclosure, each pixel PXL can be constructed in a passive light-emitting display device or the like. In this case, the pixel circuit PXC can be omitted, and both ends of each of the light-emitting elements LD constituting the light source unit LSU can be directly connected to the scan line Si, the data line Dj, the power line and / or the control line.

[0110] Figure 6a and Figure 6b 1 and 2 are plan views showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of a pixel PXL constituting the light emitting device. Figure 6b The embodiment is different from Figure 6a The embodiment further includes the first partition wall PW1 and the second partition wall PW2, Figure 6b The embodiment may be substantially equivalent to Figure 6a In an embodiment, the pixel PXL may be Figure 4 to Figure 5c In addition, the pixels PXL disposed in the display area DA may have substantially the same structure, but the present disclosure is not limited thereto. Figure 7a It is shown Figure 6a and Figure 6b A plan view of a first alignment electrode ALE1 and a second alignment electrode ALE2, Figure 7b It is shown Figure 6a and Figure 6b FIG. 1 is a plan view of a first contact electrode CNE1 and a second contact electrode CNE2.

[0111] Figures 6a to 7b Only the structure of the display element layer in which the light source unit LSU of each pixel PXL is disposed is shown. The pixel PXL may also selectively include a circuit element for controlling each light source unit LSU (eg, a circuit element constituting Figure 5a to Figure 5c At least one circuit element of the pixel circuit PXC). In addition, according to an embodiment, Figure 6a and Figure 6bAn embodiment is shown in which each light source unit LSU is connected to a predetermined power line (e.g., a first power line PL1 and / or a second power line PL2), a circuit element (e.g., at least one circuit element forming a pixel circuit PXC) and / or a signal line (e.g., a scan line Si and / or a data line Dj) through a first contact hole CH1 and a second contact hole CH2, but the present disclosure is not limited thereto. For example, in another embodiment of the present disclosure, at least one of the first alignment electrode ALE1 and the second alignment electrode ALE2 may be directly connected to a predetermined power line and / or a signal line without passing through (through) a contact hole and / or an intermediate line.

[0112] Reference Figures 6a to 7b According to an embodiment of the present disclosure, a light emitting device (e.g., a pixel PXL) includes a predetermined light emitting area EMA, a first alignment electrode ALE1 (also referred to as a "third electrode") and a second alignment electrode ALE2 (also referred to as a "fourth electrode") disposed in the light emitting area EMA, and a first contact electrode CNE1 (also referred to as a "first electrode" or a "first driving electrode") and a second contact electrode CNE2 (also referred to as a "second electrode" or a "second driving electrode") overlapped with the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively. The first alignment electrode ALE1 and the second alignment electrode ALE2 are disposed in each light emitting area EMA to be separated from each other. Similarly, the first contact electrode CNE1 and the second contact electrode CNE2 are disposed in each light emitting area EMA to be separated from each other. In an embodiment, any one of the first alignment electrode ALE1 and the second alignment electrode ALE2 may be an anode electrode of the light source unit LSU, while the other electrode may be a cathode electrode of the light source unit LSU. For example, the first alignment electrode ALE1 may be an anode electrode, and the second alignment electrode ALE2 may be a cathode electrode.

[0113] In addition, the pixel PXL includes a plurality of light emitting elements LD electrically connected between the first alignment electrode ALE1 and the second alignment electrode ALE2 and between the first contact electrode CNE1 and the second contact electrode CNE2. For example, the first end EP1 of at least some of the light emitting elements LD among the plurality of light emitting elements LD disposed in each light emitting area EMA may be electrically connected to the first alignment electrode ALE1 and the first contact electrode CNE1, while the second end EP2 of at least some of the light emitting elements LD may be electrically connected to the second alignment electrode ALE2 and the second contact electrode CNE2. Therefore, each of the plurality of light emitting elements LD (also referred to as "effective light emitting elements") electrically connected between the first alignment electrode ALE1 and the second alignment electrode ALE2 and between the first contact electrode CNE1 and the second contact electrode CNE2 (specifically, connected in the forward direction to emit light in response to a predetermined control signal and / or power supplied to the first alignment electrode ALE1 and / or the second alignment electrode ALE2) may constitute a light source of the corresponding pixel PXL. These effective light emitting elements LD may be gathered to form a light source unit LSU of the corresponding pixel PXL.

[0114] In addition, the pixel PXL may further selectively include a first partition wall PW1 and a second partition wall PW2 disposed to overlap the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively. Figure 6a As shown in FIG. 1 , the pixel PXL according to the embodiment may not include the first partition wall PW1 and the second partition wall PW2. Figure 6b As shown in FIG. 1 , a pixel PXL according to another embodiment may include a first partition wall PW1 and a second partition wall PW2 disposed under the first alignment electrode ALE1 and the second alignment electrode ALE2 , respectively.

[0115] The light emitting area EMA may be an area in which a light emitting element LD of a light source unit LSU forming a pixel PXL (specifically, an effective light emitting element completely or effectively connected between the first alignment electrode ALE1 and the second alignment electrode ALE2) is disposed. The light emitting area EMA may be surrounded by a light-shielding and / or reflective bank BNK (also referred to as a "pixel defining layer"). In other words, according to an embodiment, the light emitting area EMA of each pixel PXL may be defined and / or divided by the bank BNK.

[0116] In an embodiment, the bank BNK may be provided to surround the emission area EMA of each pixel PXL. For example, the bank BNK may be provided between the emission areas EMA of the pixels PXL to be located in an outer area of ​​each pixel PXL and / or in an area between adjacent pixels PXL.

[0117] The first alignment electrode ALE1 and the second alignment electrode ALE2 may be disposed in each light emitting area EMA while being spaced apart from each other so that at least first areas of the first alignment electrode ALE1 and the second alignment electrode ALE2 face each other. In addition, the first alignment electrode ALE1 may be disposed to surround at least one area of ​​the second alignment electrode ALE2. For example, the first alignment electrode ALE1 may be disposed to surround at least three surfaces of an area of ​​the second alignment electrode ALE2.

[0118] For example, the first alignment electrode ALE1 may be arranged to surround the main electrode portion ALE21 of the second alignment electrode ALE2 on three surfaces. For example, the first alignment electrode ALE1 may include a first electrode portion ALE11, a second electrode portion ALE12, and a third electrode portion ALE13, the first electrode portion ALE11 being arranged to be adjacent to a first side (e.g., the left side) of the main electrode portion ALE21 of the second alignment electrode ALE2, the second electrode portion ALE12 being arranged to be adjacent to a second side (e.g., the right side) of the main electrode portion ALE21 and being arranged to be opposite to the first electrode portion ALE11, and the third electrode portion ALE13 connecting the first electrode portion ALE11 and the second electrode portion ALE12 between the first electrode portion ALE11 and the second electrode portion ALE12 and being arranged to be adjacent to a third side (e.g., the upper side) of the main electrode portion ALE21.

[0119] In an embodiment, the first electrode portion ALE11 and the second electrode portion ALE12 of the first alignment electrode ALE1 may extend in the first direction DR1 in each light emitting area EMA, and may be arranged to be parallel to each other. In addition, the third electrode portion ALE13 of the first alignment electrode ALE1 may extend in the second direction DR2 intersecting the first direction DR1 to connect the first electrode portion ALE11 and the second electrode portion ALE12 between the first electrode portion ALE11 and the second electrode portion ALE12. In an embodiment, the first direction DR1 and the second direction DR2 may be orthogonal to each other, but the present disclosure is not limited thereto. For example, in another embodiment, the first direction DR1 and the second direction DR2 may intersect in a diagonal direction.

[0120] However, the shape of the first alignment electrode ALE1 may be changed differently according to embodiments. For example, the first electrode portion ALE11 and the second electrode portion ALE12 of the first alignment electrode ALE1 may extend diagonally relative to the second alignment electrode ALE2 to be symmetrical with each other. In addition, the third electrode portion ALE13 of the first alignment electrode ALE1 may extend in a direction perpendicular to the first electrode portion ALE11 and the second electrode portion ALE12, or may extend diagonally relative to the first electrode portion ALE11 and the second electrode portion ALE12.

[0121] In an embodiment, the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 constituting each first alignment electrode ALE1 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, at least some of the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 may have the same width. For example, the first electrode portion ALE11 and the second electrode portion ALE12 may have the same width WA1. In addition, the third electrode portion ALE13 may have a width WA1' that is equal to or different from the width WA1 of the first electrode portion ALE11 and / or the second electrode portion ALE12.

[0122] Each of the first electrode portion ALE11, the second electrode portion ALE12, and / or the third electrode portion ALE13 may have a uniform width, but the present disclosure is not limited thereto. For example, in another embodiment, each of the first electrode portion ALE11, the second electrode portion ALE12, and / or the third electrode portion ALE13 may have a different width for each predetermined divided area, or may have a width that gradually changes in any one direction. In other words, in the present disclosure, the shape and / or structure of the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 constituting each first alignment electrode ALE1 may be changed in various ways.

[0123] In an embodiment, each of the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1 may be separated from the second alignment electrode ALE2 by the same distance. For example, each of the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 may be separated from the second alignment electrode ALE2 by a predetermined first distance d1.

[0124] In an embodiment, the first alignment electrode ALE1 may be connected to the first connection electrode CNL1 in the outside of the light emitting area EMA. In an embodiment, the first alignment electrode ALE1 and the first connection electrode CNL1 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, when the first alignment electrode ALE1 and the first connection electrode CNL1 are integrally connected to each other, they may be considered as one electrode. For example, the first connection electrode CNL1 may be considered as one electrode of the first alignment electrode ALE1.

[0125] In an embodiment, the first connection electrode CNL1 may extend in the same direction as the third electrode portion ALE13 of the first alignment electrode ALE1, and may be spaced apart from the third electrode portion ALE13. For example, the first connection electrode CNL1 may be spaced apart from the third electrode portion ALE13 with the opening OPN disposed between the first connection electrode CNL1 and the third electrode portion ALE13, and the first connection electrode CNL1 may extend in the second direction DR2 like the third electrode portion ALE13 to be parallel to the third electrode portion ALE13.

[0126] Such a first alignment electrode ALE1 may be electrically connected to a predetermined circuit element (e.g., at least one transistor constituting the pixel circuit PXC), a power line (e.g., a first power line PL1) and / or a signal line (e.g., a scan line Si, a data line Dj, or a predetermined control line) through the first connection electrode CNL1 and / or the first contact hole CH1. For example, the first alignment electrode ALE1 may be electrically connected to a predetermined circuit element disposed thereunder through the first connection electrode CNL1 and the first contact hole CH1, and may be electrically connected to the first line through the circuit element. In an embodiment, the first line may be a first power line PL1 for supplying a first power supply VDD, but the present disclosure is not limited thereto. For example, in another embodiment, the first line may be a signal line to which a predetermined first drive signal (e.g., a scan signal, a data signal, a predetermined control signal, etc.) is supplied.

[0127] Alternatively, in another embodiment, the first alignment electrode ALE1 may be directly connected to a predetermined power line or signal line without passing through (through) the first connection electrode CNL1, the first contact hole CH1, and / or the circuit element. In this case, the first alignment electrode ALE1 may be connected to the predetermined power line or signal line integrally or non-integrally.

[0128] The second alignment electrode ALE2 may include a main electrode portion ALE21 surrounded by the first alignment electrode ALE1 and a sub-electrode portion ALE22 connected to the main electrode portion ALE21. For example, the main electrode portion ALE21 of the second alignment electrode ALE2 may be placed between the first electrode portion ALE11 and the second electrode portion ALE12 of the first alignment electrode ALE1 to be surrounded by the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1.

[0129] The sub-electrode portion ALE22 of the second alignment electrode ALE2 may be connected to the first end of the main electrode portion ALE21, and may extend in a direction different from that of the main electrode portion ALE21. For example, in each light emitting area EMA, the main electrode portion ALE21 may extend in a first direction DR1, and the sub-electrode portion ALE22 may extend in a second direction DR2 crossing the first direction DR1.

[0130] In an embodiment, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may be arranged so that at least one region thereof faces at least one end of the first alignment electrode ALE1. For example, both ends of the sub-electrode portion ALE22 may be arranged to face the first electrode portion ALE11 and the second electrode portion ALE12 of the first alignment electrode ALE1, respectively.

[0131] In an embodiment, the main electrode portion ALE21 and the sub-electrode portion ALE22 constituting the second alignment electrode ALE2 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, the main electrode portion ALE21 and the sub-electrode portion ALE22 may have the same width or different widths. For example, the sub-electrode portion ALE22 may have a width WA2' equal to the width WA2 of the main electrode portion ALE21, or may have a width WA2' different from the width WA2 of the main electrode portion ALE21.

[0132] In addition, in an embodiment, each of the main electrode portion ALE21 and the sub-electrode portion ALE22 of the second alignment electrode ALE2 may have a uniform width, but the present disclosure is not limited to this. For example, in another embodiment, each of the main electrode portion ALE21 and the sub-electrode portion ALE22 may have a different width for each predetermined divided area, or may have a width that gradually changes in any one direction. In other words, in the present disclosure, the shape and / or structure of the main electrode portion ALE21 and the sub-electrode portion ALE22 constituting each second alignment electrode ALE2 may be changed in various ways.

[0133] In an embodiment, the main electrode portion ALE21 and the sub-electrode portion ALE22 of the second alignment electrode ALE2 may be spaced apart from the first alignment electrode ALE1 by the same distance. For example, the main electrode portion ALE21 and the sub-electrode portion ALE22 may be spaced apart from the first alignment electrode ALE1 by a predetermined first distance d1.

[0134] In an embodiment, the second alignment electrode ALE2 may be connected to the second connection electrode CNL2 in the outside of the light emitting area EMA. The second alignment electrode ALE2 and the second connection electrode CNL2 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, when the second alignment electrode ALE2 and the second connection electrode CNL2 are integrally connected to each other, they may be considered as one electrode. For example, the second connection electrode CNL2 may be considered as one electrode of the second alignment electrode ALE2.

[0135] In an embodiment, the second connection electrode CNL2 may extend in the same direction as the sub-electrode portion ALE22 of the second alignment electrode ALE2, and may be separated from the sub-electrode portion ALE22. For example, the second connection electrode CNL2 may be separated from the sub-electrode portion ALE22 by a predetermined distance in the first direction DR1, and may extend in the second direction DR2 like the sub-electrode portion ALE22 to be parallel to the sub-electrode portion ALE22.

[0136] Such a second alignment electrode ALE2 can be electrically connected to a predetermined circuit element (e.g., at least one transistor constituting the pixel circuit PXC), a power line (e.g., a second power line PL2) and / or a signal line (e.g., a scan line Si, a data line Dj, or a predetermined control line) through a second connection electrode CNL2 and / or a second contact hole CH2. For example, the second alignment electrode ALE2 can be electrically connected to a predetermined second line disposed thereunder through a second connection electrode CNL2 and a second contact hole CH2. In an embodiment, the second line may be a second power line PL2 for supplying a second power supply VSS, but the present disclosure is not limited thereto. For example, in another embodiment, the second line may be a signal line to which a predetermined second drive signal (e.g., a scan signal, a data signal, a predetermined control signal, etc.) is supplied.

[0137] Alternatively, in another embodiment, the second alignment electrode ALE2 may be directly connected to a predetermined power line or signal line without passing through (through) the second connection electrode CNL2, the second contact hole CH2 and / or the circuit element. In this case, the second alignment electrode ALE2 may be connected to the predetermined power line or signal line integrally or non-integrally.

[0138] In addition, before the process of forming the pixel PXL (specifically, before completing the alignment of the light emitting element LD), the first alignment electrodes ALE1 of each pixel PXL disposed in the display area DA may be electrically connected to each other, and the second alignment electrodes ALE2 may be electrically connected to each other. In the step of aligning the light emitting element LD, the first alignment electrode ALE1 and the second alignment electrode ALE2 may be supplied with a first alignment voltage and a second alignment voltage, respectively. In other words, in the step of aligning the light emitting element LD, a predetermined alignment signal may be applied between the first alignment electrode ALE1 and the second alignment electrode ALE2, so that an electric field may be generated between the first alignment electrode ALE1 and the second alignment electrode ALE2. Through such an electric field, the light emitting element LD supplied to each pixel area (specifically, the light emitting area EMA of each pixel PXL) may be aligned between the first alignment electrode ALE1 and the second alignment electrode ALE2. After completing the alignment of the light emitting element LD, the first alignment electrode ALE1 and / or the second alignment electrode ALE2 may be disconnected between the pixels PXL, thereby allowing the pixels PXL to be driven individually.

[0139] In an embodiment, each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may have a single-layer or multi-layer structure. For example, each first alignment electrode ALE1 may include at least one reflective electrode layer. In addition, the first alignment electrode ALE1 may also selectively include at least one transparent electrode layer and / or a conductive encapsulation layer. Similarly, each second alignment electrode ALE2 may include at least one reflective electrode layer. In addition, the second alignment electrode ALE2 may also selectively include at least one transparent electrode layer and / or a conductive encapsulation layer.

[0140] According to an embodiment, in each light emitting area EMA, the first partition wall PW1 and the second partition wall PW2 may be disposed below the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively. In addition, the first contact electrode CNE1 and the second contact electrode CNE2 may be disposed above the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively. According to an embodiment, the first contact electrode CNE1 and the second contact electrode CNE2 may have shapes corresponding to the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively, and may be disposed in each light emitting area EMA to be separated from each other.

[0141] The first partition wall PW1 may be disposed under the first alignment electrode ALE1 to overlap the first alignment electrode ALE1. For example, the first partition wall PW1 may be disposed under the first alignment electrode ALE1 while having a width narrower than that of the first alignment electrode ALE1. For example, in a plan view, the first partition wall PW1 may be located in the first alignment electrode ALE1.

[0142] In an embodiment, the first partition wall PW1 may have a shape corresponding to that of the first alignment electrode ALE1. For example, like the first alignment electrode ALE1, the first partition wall PW1 may be shaped to surround the main electrode portion ALE21 of the second alignment electrode ALE2 on at least three surfaces.

[0143] If the first partition wall PW1 is disposed under the first alignment electrode ALE1, the first alignment electrode ALE1 may protrude upward in the region where the first partition wall PW1 is formed. Therefore, light emitted from the first end EP1 of the light emitting element LD facing the first alignment electrode ALE1 may be controlled to face the front of the display device.

[0144] The second partition wall PW2 may be disposed under the second alignment electrode ALE2 to overlap the second alignment electrode ALE2. For example, the second partition wall PW2 may be disposed under the second alignment electrode ALE2 while having a width narrower than that of the second alignment electrode ALE2.

[0145] The second partition wall PW2 may have a shape corresponding to that of the second alignment electrode ALE2. For example, in a plan view, the second partition wall PW2 may be located in the second alignment electrode ALE2 while having a shape corresponding to that of the second alignment electrode ALE2.

[0146] If the second partition wall PW2 is disposed under the second alignment electrode ALE2, the second alignment electrode ALE2 may protrude upward in the region where the second partition wall PW2 is formed. Therefore, light emitted from the second end EP2 of the light emitting element LD facing the second alignment electrode ALE2 may be controlled to face the front of the display device.

[0147] The first contact electrode CNE1 may be disposed over the first alignment electrode ALE1 to overlap the first alignment electrode ALE1. In an embodiment, the first alignment electrode ALE1 and the first contact electrode CNE1 may have shapes corresponding to each other.

[0148] For example, the first contact electrode CNE1 may include a first electrode portion CNE11, a second electrode portion CNE12, and a third electrode portion CNE13, the first electrode portion CNE11 overlapping the first electrode portion ALE11 of the first alignment electrode ALE1 while having a shape corresponding to the shape of the first electrode portion ALE11 of the first alignment electrode ALE1, the second electrode portion CNE12 overlapping the second electrode portion ALE12 of the first alignment electrode ALE1 while having a shape corresponding to the shape of the second electrode portion ALE12 of the first alignment electrode ALE1, and the third electrode portion CNE13 overlapping the third electrode portion ALE13 of the first alignment electrode ALE1 while having a shape corresponding to the shape of the third electrode portion ALE13 of the first alignment electrode ALE1. In an embodiment, the first electrode portion CNE11 of the first contact electrode CNE1 may be disposed adjacent to the second alignment electrode ALE2 and the first side (e.g., the left side) of the second contact electrode CNE2, and the second electrode portion CNE12 of the first contact electrode CNE1 may be disposed adjacent to the second side (e.g., the right side) of the second alignment electrode ALE2 and the second contact electrode CNE2. In addition, the third electrode portion CNE13 of the first contact electrode CNE1 may be disposed adjacent to a third side (e.g., an upper side) of the second alignment electrode ALE2 and the second contact electrode CNE2. In other words, the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 may be disposed in each light emitting area EMA to be located in different sides of the second alignment electrode ALE2 and the second contact electrode CNE2.

[0149] According to an embodiment, the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1 may be symmetrical to each other, and the second contact electrode CNE2 is disposed between the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1. The third electrode portion CNE13 of the first contact electrode CNE1 may be disposed between the first electrode portion CNE11 and the second electrode portion CNE12 to connect the first electrode portion CNE11 and the second electrode portion CNE12. For example, the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1 may be disposed in the corresponding light emitting area EMA to extend in the first direction DR1 and be parallel to each other, and the third electrode portion CNE13 of the first contact electrode CNE1 may be disposed in the light emitting area EMA to extend in the second direction DR2 crossing the first direction DR1, thereby connecting the first electrode portion CNE11 and the second electrode portion CNE12 to each other. Furthermore, the third electrode portion CNE13 of the first contact electrode CNE1 may extend in a direction perpendicular to the first electrode portion CNE11 and the second electrode portion CNE12 , or may extend diagonally with respect to the first electrode portion CNE11 and the second electrode portion CNE12 .

[0150] In an embodiment, the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 constituting each first contact electrode CNE1 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, at least some of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 may have the same width. For example, the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1 may have the same width WC1. In addition, the third electrode portion CNE13 may have a width WC1' that is equal to or different from the width WC1 of the first electrode portion CNE11 and / or the second electrode portion CNE12.

[0151] Each of the first electrode portion CNE11, the second electrode portion CNE12, and / or the third electrode portion CNE13 of the first contact electrode CNE1 may have a uniform width, but the present disclosure is not limited thereto. For example, in another embodiment, each of the first electrode portion CNE11, the second electrode portion CNE12, and / or the third electrode portion CNE13 may have a different width for each predetermined divided area, or may have a width that gradually changes in one direction. In other words, in the present disclosure, the shape and / or structure of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 constituting each first contact electrode CNE1 may be changed in various ways.

[0152] In an embodiment, each of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 may be separated from the second contact electrode CNE2 by the same distance. For example, each of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 may be separated from the second contact electrode CNE2 by a predetermined second distance d2. According to an embodiment, the second distance d2 may have a value equal to or less than the length of the light emitting element LD, so that the first end EP1 and the second end EP2 of the light emitting element LD may contact the first contact electrode CNE1 and the second contact electrode CNE2, respectively. For example, the second distance d2 may have a value smaller than the average length of the light emitting element LD.

[0153] In an embodiment, a first contact electrode CNE1 may be disposed on a first region of the first alignment electrode ALE1 and first ends EP1 of a plurality of light emitting elements LD aligned in the light emitting area EMA to be electrically connected to the first ends EP1 and the first alignment electrode ALE1. Through the first contact electrode CNE1, the first ends EP1 of the light emitting elements LD may be electrically connected to the first alignment electrode ALE1. In addition, the first ends EP1 of the light emitting elements LD may be reliably fixed by the first contact electrode CNE1, thus preventing the light emitting elements LD from being removed from the aligned positions.

[0154] The second contact electrode CNE2 may be disposed over the second alignment electrode ALE2 to overlap the second alignment electrode ALE2. In an embodiment, the second alignment electrode ALE2 and the second contact electrode CNE2 may have shapes corresponding to each other.

[0155] For example, the second contact electrode CNE2 may include a main electrode portion CNE21 and a sub-electrode portion CNE22, the main electrode portion CNE21 overlapping the main electrode portion ALE21 while having a shape corresponding to the shape of the main electrode portion ALE21 of the second alignment electrode ALE2, and the sub-electrode portion CNE22 overlapping the sub-electrode portion ALE22 while having a shape corresponding to the shape of the sub-electrode portion ALE22 of the second alignment electrode ALE2. In an embodiment, the main electrode portion CNE21 of the second contact electrode CNE2 may be disposed between the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1 to be surrounded by the first contact electrode CNE1. In addition, the sub-electrode portion CNE22 of the second contact electrode CNE2 may be connected to a first end of the main electrode portion CNE21 of the second contact electrode CNE2, and extend in a direction different from the direction of the main electrode portion CNE21 to face a first end of each of the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1.

[0156] In an embodiment, the main electrode portion CNE21 of the second contact electrode CNE2 may extend in the first direction DR1 in each light emitting area EMA like the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1, and may be disposed in parallel with the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1. In addition, the sub-electrode portion CNE22 of the second contact electrode CNE2 may extend in the second direction DR2 like the third electrode portion CNE13 of the first contact electrode CNE1, and may be disposed in parallel with the third electrode portion CNE13 of the first contact electrode CNE1.

[0157] In an embodiment, the main electrode portion CNE21 and the sub-electrode portion CNE22 constituting the second contact electrode CNE2 may be integrally connected to each other, but the present disclosure is not limited thereto. In addition, the main electrode portion CNE21 and the sub-electrode portion CNE22 may have the same width or different widths. For example, the sub-electrode portion CNE22 may have a width WC2' equal to the width WC2 of the main electrode portion CNE21, or have a width WC2' different from the width WC2 of the main electrode portion CNE21.

[0158] In addition, in an embodiment, each of the main electrode portion CNE21 and the sub-electrode portion CNE22 of the second contact electrode CNE2 may have a uniform width, but the present disclosure is not limited thereto. For example, in another embodiment, each of the main electrode portion CNE21 and the sub-electrode portion CNE22 may have a different width for each predetermined divided area, or may have a width that gradually changes in one direction. In other words, in the present disclosure, the shape and / or structure of the main electrode portion CNE21 and the sub-electrode portion CNE22 constituting each second contact electrode CNE2 may be changed in various ways.

[0159] In an embodiment, the main electrode portion CNE21 and the sub-electrode portion CNE22 of the second contact electrode CNE2 may be spaced apart from the first contact electrode CNE1 by the same distance. For example, the main electrode portion CNE21 and the sub-electrode portion CNE22 may be spaced apart from the first contact electrode CNE1 by a predetermined second distance d2.

[0160] In an embodiment, a second contact electrode CNE2 may be disposed on at least a first region of the second alignment electrode ALE2 and second ends EP2 of a plurality of light emitting elements LD aligned in the light emitting area EMA to be electrically connected to the second ends EP2 and the second alignment electrode ALE2. The second ends EP2 of the light emitting elements LD may be electrically connected to the second alignment electrode ALE2 through the second contact electrode CNE2. In addition, the second ends EP2 of the light emitting elements LD may be reliably fixed through the second contact electrode CNE2, thereby preventing the light emitting elements LD from being removed from the aligned positions.

[0161] The light emitting element LD is aligned between the first alignment electrode ALE1 and the second alignment electrode ALE2. The first end EP1 of the light emitting element LD may be electrically connected to the first alignment electrode ALE1, while the second end EP2 may be electrically connected to the second alignment electrode ALE2. For example, the first end EP1 of the light emitting element LD may be electrically connected to the first contact electrode CNE1 to overlap with the first contact electrode CNE1, and may be electrically connected to the first alignment electrode ALE1 through the first contact electrode CNE1. Similarly, the second end EP2 of the light emitting element LD may be electrically connected to the second contact electrode CNE2 to overlap with the second contact electrode CNE2, and may be electrically connected to the second alignment electrode ALE2 through the second contact electrode CNE2.

[0162] In an embodiment, each light emitting element LD may be a rod-shaped light emitting element extending in the length direction. In addition, the light emitting element LD may include a first end EP1 and a second end EP2, the first end EP1 being located at the first end in the length direction and electrically connected to the first alignment electrode ALE1, and the second end EP2 being located at the second end in the length direction and electrically connected to the second alignment electrode ALE2. For example, each light emitting element LD may be electrically connected between the first alignment electrode ALE1 and the second alignment electrode ALE2 in a region where the first alignment electrode ALE1 and the second alignment electrode ALE2 are arranged to face each other.

[0163] In an embodiment, each of the light emitting elements LD may be formed of a light emitting element made of a material having an inorganic crystal structure and having an ultra-small size (eg, ranging from nanometer to micrometer). Figures 1a to 3b As shown in , each light emitting element LD may be an ultra-small rod-type light emitting element having a diameter D and / or a length L ranging from nanometer to micrometer. The size of the light emitting element LD may be changed in various ways according to the design conditions of the light emitting device (eg, pixel PXL).

[0164] In an embodiment, a first end EP1 of a light emitting element LD (e.g., an effective light emitting element completely or effectively connected between the first alignment electrode ALE1 and the second alignment electrode ALE2) may be electrically connected to the first alignment electrode ALE1 via the first contact electrode CNE1, and a second end EP2 of the light emitting element LD may be electrically connected to the second alignment electrode ALE2 via the second contact electrode CNE2. In another embodiment, at least one of the first end EP1 and the second end EP2 of the light emitting element LD may be in direct contact with the first alignment electrode ALE1 and / or the second alignment electrode ALE2, and electrically connected to the first alignment electrode ALE1 and / or the second alignment electrode ALE2.

[0165] In an embodiment, the light emitting element LD may be prepared in a diffused form in a predetermined solution and then supplied to each light emitting area EMA using an inkjet method or the like. For example, the light emitting element LD may be mixed with a volatile solvent and supplied to each light emitting area EMA. Here, if a predetermined alignment voltage (or "alignment signal") is applied to the first alignment electrode ALE1 and the second alignment electrode ALE2, an electric field is formed between the first alignment electrode ALE1 and the second alignment electrode ALE2, whereby the light emitting element LD is aligned between the first alignment electrode ALE1 and the second alignment electrode ALE2. After the light emitting element LD has been aligned, the solvent may be removed by a volatilization scheme or other schemes. In this way, the light emitting element LD may be reliably arranged between the first alignment electrode ALE1 and the second alignment electrode ALE2. In addition, the first contact electrode CNE1 and the second contact electrode CNE2 may be formed on opposite ends (i.e., the first end EP1 and the second end EP2) of the light emitting element LD, respectively. Therefore, the light emitting element LD may be more reliably connected between the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0166] If the first end EP1 of the light emitting element LD is electrically connected to the first power source VDD via the first alignment electrode ALE1, the pixel circuit PXC and / or the first power line PL1, and the second end EP2 of the light emitting element LD is electrically connected to the second power source VSS via the second alignment electrode ALE2 and / or the second power line PL2, at least one light emitting element LD connected in the forward direction between the first alignment electrode ALE1 and the second alignment electrode ALE2 emits light having a brightness corresponding to the driving current supplied from the pixel circuit PXC, etc. Thus, the pixel PXL can emit light.

[0167] In addition, at least one light emitting element LD that is not completely or effectively connected between the first alignment electrode ALE1 and the second alignment electrode ALE2 may be further disposed in each light emitting area EMA. For example, among the areas where the first contact electrode CNE1 and the second contact electrode CNE2 face each other, in the areas where the first contact electrode CNE1 is bent (such as the boundary areas of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13), the distance between the first contact electrode CNE1 and the second contact electrode CNE2 may be relatively large. Therefore, at least one light emitting element LD that is not completely or effectively connected between the first contact electrode CNE1 and the second contact electrode CNE2 may exist in the corresponding area. Optionally, even in the area where the first contact electrode CNE1 and the second contact electrode CNE2 are evenly separated by the second distance d2, when the light emitting element LD is not aligned or the light emitting element LD is biased toward any one electrode, the light emitting element LD may not be completely or effectively connected to the first contact electrode CNE1 and the second contact electrode CNE2.

[0168] As in the above-described embodiment, when the first alignment electrode ALE1 and the first contact electrode CNE1 include the first electrode portions ALE11 and CNE11, the second electrode portions ALE12 and CNE12, and the third electrode portions ALE13 and CNE13, and are disposed to surround the area of ​​each of the second alignment electrode ALE2 and the second contact electrode CNE2 on at least three surfaces, the light emitting element LD supplied to each light emitting area EMA can be more effectively utilized, thereby forming the light source unit LSU. For example, in the present embodiment, the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 can surround the second contact electrode CNE2 on at least three surfaces while being separated from the second contact electrode CNE2 by a second distance d2 that is equal to or less than the length of the light emitting element LD. In addition, the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1 can be disposed under the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1, respectively.

[0169] According to the above-described embodiment, in the step of aligning the light emitting elements LD by applying a predetermined alignment voltage (or alignment signal) between the first alignment electrode ALE1 and the second alignment electrode ALE2, after the light emitting elements LD are supplied to each light emitting area EMA (or simultaneously with the supply of the light emitting elements LD), the first contact electrode CNE1 and the second contact electrode CNE2 are formed so that a large number of the light emitting elements LD are electrically connected between the first contact electrode CNE1 and the second contact electrode CNE2 among the light emitting elements LD arranged in the area where the electric field is formed by the alignment voltage. For example, the first alignment electrode ALE1 and the first contact electrode CNE1 may be disposed on opposite sides (e.g., left and right sides) of the second alignment electrode ALE2 and the second contact electrode CNE2, and in addition, the first alignment electrode ALE1 and the first contact electrode CNE1 may also be disposed on the other side (e.g., upper side) of the second alignment electrode ALE2 and the second contact electrode CNE2.

[0170] For example, the first alignment electrode ALE1 and the first contact electrode CNE1 may include first electrode portions ALE11 and CNE11, second electrode portions ALE12 and CNE12, and third electrode portions ALE13 and CNE13 respectively disposed on first, second, and third sides of the second alignment electrode ALE2 and the second contact electrode CNE2. In addition, each of the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 may be spaced apart from the second contact electrode CNE2 by a second distance d2 equal to or less than the length of the light emitting element LD while surrounding at least three surfaces of the second contact electrode CNE2.

[0171] In other words, according to the above-described embodiment, the first contact electrode CNE1 and the second contact electrode CNE2 may be formed to improve the utilization efficiency of the light emitting element LD aligned in each light emitting area EMA. For example, in the step of aligning the light emitting element LD, the first contact electrode CNE1 and the second contact electrode CNE2 may have a shape and / or size corresponding to a region in which an electric field is formed between the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0172] Furthermore, in the above-described embodiment, the first alignment electrode ALE1 and the second alignment electrode ALE2 corresponding to the shapes of the first contact electrode CNE1 and the second contact electrode CNE2 are disposed below the first contact electrode CNE1 and the second contact electrode CNE2. Therefore, in the step of aligning the light emitting element LD, the first contact electrode CNE1 and the second contact electrode CNE2 are disposed in a region where an electric field is formed by an alignment voltage applied to the first alignment electrode ALE1 and the second alignment electrode ALE2. Therefore, a large number of light emitting elements LD can be reliably connected between the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0173] Figure 8a and Figure 8b Each of them shows a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b According to an embodiment, Figure 8a and Figure 8b Other examples related to the shapes of the first and second partition walls PW1 and PW2 and the upper layers thereof are shown.

[0174] Figure 9a and Figure 9b Each of them shows a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b According to an embodiment, Figure 9a and Figure 9b Other examples related to the shapes of the first partition wall PW1 and the second partition wall PW2 and the upper layers thereof are shown. In addition, regarding the first insulating layer INS1 and the first contact electrode CNE1 and the second contact electrode CNE2, Figure 9a and Figure 9b Shown with Figure 8a and Figure 8b Embodiments of different embodiments.

[0175] Reference Figures 6a to 9bAccording to an embodiment of the present disclosure, a light emitting device (e.g., a pixel PXL) includes a base layer BSL and first and second partition walls PW1 and PW2, first and second alignment electrodes ALE1 and ALE2, a first insulating layer INS1, a light emitting element LD, a second insulating layer INS2, first and second contact electrodes CNE1 and CNE2, and a third insulating layer INS3 sequentially disposed and / or formed on a surface of the base layer BSL. In addition, in an embodiment, the pixel PXL may further selectively include a pixel circuit layer PCL between the base layer BSL and the first and second partition walls PW1 and PW2.

[0176] The pixel circuit layer PCL may include at least one circuit element (e.g., at least one transistor and / or capacitor) forming the pixel circuit PXC, at least one power line and / or signal line, etc. When the pixel circuit PXC is omitted and the light source unit LSU is directly connected to the first power line PL1 and the second power line PL2 (or predetermined signal lines), the pixel circuit layer PCL may be omitted.

[0177] The first partition wall PW1 and the second partition wall PW2 are disposed in each light emitting area EMA to be separated from each other. The first partition wall PW1 and the second partition wall PW2 protrude in a height direction on the base layer BSL and / or the pixel circuit layer PCL. In an embodiment, the first partition wall PW1 and the second partition wall PW2 may have substantially the same height, but the present disclosure is not limited thereto.

[0178] In an embodiment, the first partition wall PW1 may be disposed between the base layer BSL and / or the pixel circuit layer PCL and the first alignment electrode ALE1. The first partition wall PW1 may be disposed adjacent to the first end EP1 of the light emitting element LD. For example, one side of the first partition wall PW1 may be positioned at a distance adjacent to the first end EP1 of the light emitting element LD, thereby being disposed to face the first end EP1.

[0179] In an embodiment, the second partition wall PW2 may be disposed between the base layer BSL and / or the pixel circuit layer PCL and the second alignment electrode ALE2. The second partition wall PW2 may be disposed adjacent to the second end EP2 of the light emitting element LD. For example, one side of the second partition wall PW2 may be positioned at a distance adjacent to the second end EP2 of the light emitting element LD, thereby being disposed to face the second end EP2.

[0180] In an embodiment, each of the first partition wall PW1 and the second partition wall PW2 may have various shapes. As an example, Figure 8a and Figure 9aAs shown in , each of the first partition wall PW1 and the second partition wall PW2 may have a trapezoidal cross-section whose width decreases from the bottom to the top thereof. In this case, each of the first partition wall PW1 and the second partition wall PW2 may have an inclined surface on at least one side. Alternatively, in another embodiment, as Figure 8b and Figure 9b As shown in , each of the first partition wall PW1 and the second partition wall PW2 may have a semicircular or semi-elliptical cross-section whose width gradually decreases upward. In this case, each of the first partition wall PW1 and the second partition wall PW2 may have a curved surface on at least one side. In other words, in the present disclosure, the shape of each of the first partition wall PW1 and the second partition wall PW2 may be changed in various ways without being particularly limited. In addition, in an embodiment, at least one of the first partition wall PW1 and the second partition wall PW2 may be omitted, or the position of each of the first partition wall PW1 and the second partition wall PW2 may be changed.

[0181] Each of the first partition wall PW1 and the second partition wall PW2 may include an insulating material including an inorganic material and / or an organic material. As an example, the first partition wall PW1 and the second partition wall PW2 may include various inorganic insulating materials known to those skilled in the art (such as SiN x or SiO x ). Alternatively, the first partition wall PW1 and the second partition wall PW2 may include at least one organic layer and / or a photoresist layer including various known organic insulating materials, or may form a single-layer or multi-layer insulator including an organic / inorganic material combination. In other words, in the embodiment of the present disclosure, the materials of the first partition wall PW1 and the second partition wall PW2 may be changed differently.

[0182] In addition, in an embodiment, each of the first partition wall PW1 and the second partition wall PW2 can be used as a reflective member. For example, the first partition wall PW1 and the second partition wall PW2 and the first alignment electrode ALE1 and the second alignment electrode ALE2 disposed on the first partition wall PW1 and the second partition wall PW2 can be used as a reflective member to guide the light emitted from each light emitting element LD in a desired direction, thereby improving the light efficiency of the pixel PXL.

[0183] The first and second alignment electrodes ALE1 and ALE2 may be disposed on the first and second partition walls PW1 and PW2, respectively. The first and second alignment electrodes ALE1 and ALE2 are disposed in each of the light emitting areas EMA to be spaced apart from each other.

[0184] In an embodiment, the first alignment electrode ALE1 and the second alignment electrode ALE2 respectively disposed on the first partition wall PW1 and the second partition wall PW2 may have shapes corresponding to the corresponding shapes of the first partition wall PW1 and the second partition wall PW2. For example, the first alignment electrode ALE1 and the second alignment electrode ALE2 may protrude in the height direction of the base layer BSL while having inclined surfaces or curved surfaces corresponding to the first partition wall PW1 and the second partition wall PW2, respectively.

[0185] Each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may include at least one conductive material. For example, each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may include at least one of a metal such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Ti, or an alloy thereof, a conductive oxide such as ITO, IZO, ZnO, or ITZO, and a conductive polymer such as PEDOT; however, it is not limited thereto.

[0186] In addition, each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may have a single-layer or multi-layer structure. As an example, each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may include at least one reflective electrode layer. Each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may also selectively include at least one transparent electrode layer disposed above and / or below the reflective electrode layer and at least one conductive encapsulation layer covering the upper portion of the reflective electrode layer and / or the transparent electrode layer.

[0187] According to an embodiment, the reflective electrode layer of each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may be formed of a conductive material having a uniform reflectivity. For example, the reflective electrode layer may include at least one of metals such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, and alloys thereof; however, the present disclosure is not limited thereto. In other words, the reflective electrode layer may be formed of various reflective conductive materials. When the first alignment electrode ALE1 and the second alignment electrode ALE2 both include a reflective electrode layer, this enables light emitted from opposite ends (i.e., the first end EP1 and the second end EP2) of each light emitting element LD to propagate in a direction along which an image is displayed (e.g., in a front direction). Specifically, if the first alignment electrode ALE1 and the second alignment electrode ALE2 respectively have curved or inclined surfaces corresponding to the shapes of the first partition wall PW1 and the second partition wall PW2 and are respectively disposed to face the first end EP1 and the second end EP2 of the light emitting element LD, light emitted from the first end EP1 and the second end EP2 of each light emitting element LD may be reflected by the first alignment electrode ALE1 and the second alignment electrode ALE2, and thus propagates in the front direction of the display panel PNL (e.g., in the upward direction of the base layer BSL). Thus, the efficiency of light emitted from the light emitting element LD may be improved.

[0188] In addition, the transparent electrode layer of each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may be formed of various transparent electrode materials. As an example, the transparent electrode layer may include ITO, IZO or ITZO, but the present disclosure is not limited thereto. In an embodiment, each of the first alignment electrode ALE1 and the second alignment electrode ALE2 may have a three-layer structure including a stacked structure of ITO / Ag / ITO. Therefore, if the first alignment electrode ALE1 and the second alignment electrode ALE2 are each composed of a multilayer structure of two or more layers, the voltage drop due to signal delay (RC delay) may be minimized. Therefore, the desired voltage may be effectively transmitted to the light emitting element LD.

[0189] In addition, if each of the first alignment electrode ALE1 and the second alignment electrode ALE2 includes a conductive encapsulation layer covering the reflective electrode layer and / or the transparent electrode layer, it is possible to prevent the reflective electrode layer of the first alignment electrode ALE1 and the second alignment electrode ALE2 from being damaged due to defects caused by the manufacturing process of the pixel PXL. However, the conductive encapsulation layer may be selectively included in the first alignment electrode ALE1 and the second alignment electrode ALE2, and may be omitted according to the embodiment. In addition, the conductive encapsulation layer may be considered as a component of each of the first alignment electrode ALE1 and the second alignment electrode ALE2, or as a separate component disposed on the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0190] The first insulating layer INS1 is disposed on one region of each of the first alignment electrode ALE1 and the second alignment electrode ALE2. For example, the first insulating layer INS1 may be formed to cover one region of each of the first alignment electrode ALE1 and the second alignment electrode ALE2, and may include an opening to expose another region of each of the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0191] In an embodiment, the first insulating layer INS1 may be formed to mainly and completely cover the first alignment electrode ALE1 and the second alignment electrode ALE2. After the light emitting element LD is supplied and aligned on the first insulating layer INS1, as shown in FIG. Figure 8a and Figure 8b As shown in FIG. 1 , the first insulating layer INS1 may be partially opened to expose the first alignment electrode ALE1 and the second alignment electrode ALE2 in the predetermined first contact portion CNT1 and the second contact portion CNT2. Optionally, after the supply and alignment of the light emitting element LD are completed, as shown in FIG. Figure 9a and Figure 9b As shown in FIG. 1 , the first insulating layer INS1 may be patterned in the form of a single pattern locally disposed under the light emitting element LD.

[0192] That is, the first insulating layer INS1 may be disposed between the first alignment electrode ALE1 and the second alignment electrode ALE2 and the light emitting element LD, and may expose at least one region of each of the first alignment electrode ALE1 and the second alignment electrode ALE2. After forming the first alignment electrode ALE1 and the second alignment electrode ALE2, the first insulating layer INS1 is formed to cover the first alignment electrode ALE1 and the second alignment electrode ALE2, thereby preventing the first alignment electrode ALE1 and the second alignment electrode ALE2 from being damaged or preventing metal from being precipitated in a subsequent process. In addition, the first insulating layer INS1 may reliably support each light emitting element LD.

[0193] For example, a plurality of light emitting elements LD may be supplied to and aligned in each light emitting region EMA in which the first insulating layer INS1 is formed. As an example, a plurality of light emitting elements LD may be supplied to each light emitting region EMA by an inkjet method or the like, and the light emitting elements LD may be aligned between the first alignment electrode ALE1 and the second alignment electrode ALE2 by a predetermined alignment voltage (or alignment signal) applied to the first alignment electrode ALE1 and the second alignment electrode ALE2.

[0194] The second insulating layer INS2 may be disposed on the light emitting element LD (specifically, the light emitting element LD aligned between the first alignment electrode ALE1 and the second alignment electrode ALE2), and may expose the first end EP1 and the second end EP2 of the light emitting element LD. For example, the second insulating layer INS2 may be disposed only partially in the first region of the light emitting element LD without covering the first end EP1 and the second end EP2 of the light emitting element LD. The second insulating layer INS2 may be formed in an independent pattern in each light emitting region EMA; however, the present disclosure is not limited thereto. In addition, as Figure 8a and Figure 8b As shown in FIG. 1 , when there is a space between the first insulating layer INS1 and each of the light emitting elements LD before forming the second insulating layer INS2 , the space can be filled in the process of forming the second insulating layer INS2 . Therefore, the light emitting element LD can be supported more reliably.

[0195] The first contact electrode CNE1 and the second contact electrode CNE2 may be disposed on the first alignment electrode ALE1 and the second alignment electrode ALE2 and the first end EP1 and the second end EP2 of the light emitting element LD. Figure 8a and Figure 8b As shown in , the first contact electrode CNE1 and the second contact electrode CNE2 may be disposed on the same layer. In this case, the first contact electrode CNE1 and the second contact electrode CNE2 may be formed of the same conductive material in the same process, but the present disclosure is not limited thereto.

[0196] In another embodiment, if Figure 9a and Figure 9b As shown in , the first contact electrode CNE1 and the second contact electrode CNE2 may be disposed on different layers. In this case, the first contact electrode CNE1 and the second contact electrode CNE2 may be formed using the same conductive material or different conductive materials in different processes. When the first contact electrode CNE1 and the second contact electrode CNE2 are disposed on different layers, at least one insulating layer (e.g., a fourth insulating layer INS4) may be formed on the contact electrode (e.g., the first contact electrode CNE1) disposed on the lower layer.

[0197] The first and second contact electrodes CNE1 and CNE2 electrically connect the first and second ends EP1 and EP2 of the light emitting element LD to the first and second alignment electrodes ALE1 and ALE2 , respectively.

[0198] For example, the first contact electrode CNE1 may be disposed on the first alignment electrode ALE1 to contact the first alignment electrode ALE1. For example, the first contact electrode CNE1 may be disposed to contact the first alignment electrode ALE1 on a region (e.g., the first contact portion CNT1) of the first alignment electrode ALE1 that is not covered by the first insulating layer INS1. In addition, the first contact electrode CNE1 may be disposed on the first end EP1 to contact at least one light emitting element LD (e.g., the first ends EP1 of the plurality of light emitting elements LD) adjacent to the first alignment electrode ALE1. In other words, the first contact electrode CNE1 may be disposed to cover the first end EP1 of the light emitting element LD and at least one region of the first alignment electrode ALE1 corresponding thereto. Thus, the first end EP1 of the light emitting element LD may be electrically connected to the first alignment electrode ALE1.

[0199] Similarly, the second contact electrode CNE2 may be disposed on the second alignment electrode ALE2 to contact each second alignment electrode ALE2. For example, the second contact electrode CNE2 may be disposed to contact the second alignment electrode ALE2 on an area (e.g., the second contact portion CNT2) of the second alignment electrode ALE2 that is not covered by the first insulating layer INS1. In addition, the second contact electrode CNE2 may be disposed on the second end EP2 to contact at least one light emitting element LD (e.g., the second ends EP2 of the plurality of light emitting elements LD) adjacent to the second alignment electrode ALE2. In other words, the second contact electrode CNE2 may be disposed to cover the second end EP2 of the light emitting element LD and at least one area of ​​the second alignment electrode ALE2 corresponding thereto. Thus, the second end EP2 of the light emitting element LD may be electrically connected to the second alignment electrode ALE2.

[0200] The third insulating layer INS3 may be formed and / or disposed on a surface of the base layer BSL on which the first partition wall PW1 and the second partition wall PW2, the first alignment electrode ALE1 and the second alignment electrode ALE2, the light emitting element LD, and the first contact electrode CNE1 and the second contact electrode CNE2 are formed to cover the first partition wall PW1 and the second partition wall PW2, the first alignment electrode ALE1 and the second alignment electrode ALE2, the light emitting element LD, and the first contact electrode CNE1 and the second contact electrode CNE2. The third insulating layer INS3 may include a thin film encapsulation layer including at least one inorganic layer and / or an organic layer, but the present disclosure is not limited thereto. In addition, in an embodiment, at least one outer coating layer (not shown) may be further disposed above the third insulating layer INS3.

[0201] In an embodiment, each of the first to fourth insulating layers INS1, INS2, INS3, and INS4 may have a single-layer or multi-layer structure and include at least one inorganic insulating material and / or organic insulating material. For example, each of the first to fourth insulating layers INS1, INS2, INS3, and INS4 may include various well-known organic / inorganic insulating materials (including SiN x ), the material of each of the first to fourth insulating layers INS1, INS2, INS3, and INS4 is not particularly limited. The first to fourth insulating layers INS1, INS2, INS3, and INS4 may include corresponding different insulating materials, or at least some of the first to fourth insulating layers INS1, INS2, INS3, and INS4 may include the same insulating material.

[0202] Fig.10 FIG. 2 is a diagram showing a light emitting device according to an embodiment of the present disclosure, for example, Figure 6b The cross-sectional view of the example of the cross section corresponding to the line II-II'. In the embodiment, Fig.10 Some circuit elements and / or lines disposed in the pixel circuit layer PCL and a connection structure of the pixel circuit layer PCL and a display element layer DPL disposed thereover (for example, a layer in which the light emitting element LD forming the light source unit LSU is disposed) are shown. Fig.10 In the drawings, the same reference numerals are used to denote Figures 6a to 9b The components of the embodiments are similar or identical components, and further description thereof will be omitted.

[0203] Reference Figures 6a to 10 According to an embodiment of the present disclosure, the light emitting device may include a pixel circuit layer PCL disposed between a base layer BSL and a display element layer DPL. For example, the pixel circuit layer PCL may be formed on a surface of the base layer BSL, and the display element layer DPL may be formed on a surface of the base layer BSL on which the pixel circuit layer PCL has been formed.

[0204] The pixel circuit layer PCL may include a pixel circuit (eg, Figure 5a to Figure 5c Any one of the pixel circuits PXC shown in FIG. 1 and / or lines connected to the pixel circuits. For example, the pixel circuit layer PCL may include Figure 5a The pixel circuit layer PCL may further include a first transistor T1 and a second transistor T2. Figure 5a The storage capacitor Cst shown in FIG. 1 , various signal lines (eg, scan lines Si and data lines Dj) connected to each pixel circuit PXC, and various power lines (eg, first power lines PL1 and second power lines PL2) connected to the pixel circuit PXC and / or the light source unit LSU.

[0205] In an embodiment, a plurality of transistors (e.g., a first transistor T1 and a second transistor T2) provided in each pixel circuit PXC may have substantially the same or similar cross-sectional structures. However, the present disclosure is not limited thereto. For example, in another embodiment, at least some of the plurality of transistors may have different types and / or structures.

[0206] In addition, the pixel circuit layer PCL includes a plurality of insulating layers. For example, the pixel circuit layer PCL may include a buffer layer BFL, a gate insulating layer GI, an interlayer insulating layer ILD, and a passivation layer PSV that are continuously stacked on one surface of the base layer BSL. In addition, the pixel circuit layer PCL may also selectively include at least one light shielding pattern (not shown) disposed under at least some of the transistors.

[0207] The buffer layer BFL may prevent impurities from diffusing into each circuit element. The buffer layer BFL may be formed of a single layer, or may be formed of a multilayer having two or more layers. In the case where the buffer layer BFL has a multilayer structure, the corresponding layers may be formed of the same material or different materials. In an embodiment, the buffer layer BFL may be omitted.

[0208] Each of the first transistor T1 and the second transistor T2 includes a semiconductor layer SCL, a gate electrode GE, and a first transistor electrode ET1 and a second transistor electrode ET2. Fig.10 An embodiment in which each of the first transistor T1 and the second transistor T2 includes a first transistor electrode ET1 and a second transistor electrode ET2 formed separately from the semiconductor layer SCL is shown, but the present disclosure is not limited thereto. For example, in an embodiment, the first transistor electrode ET1 and / or the second transistor electrode ET2 provided in at least one transistor (provided in each pixel region) may be formed integrally with the corresponding semiconductor layer SCL.

[0209] The semiconductor layer SCL may be disposed on the buffer layer BFL. For example, the semiconductor layer SCL may be disposed between the gate insulating layer GI and the base layer BSL on which the buffer layer BFL is formed. The semiconductor layer SCL may include a first region in contact with each first transistor electrode ET1, a second region in contact with each second transistor electrode ET2, and a channel region disposed between the first region and the second region. In an embodiment, one of the first region and the second region may be a source region, and the other may be a drain region.

[0210] In an embodiment, the semiconductor layer SCL may be a semiconductor pattern formed of polysilicon, amorphous silicon, an oxide semiconductor, etc. The channel region of the semiconductor layer SCL may be an intrinsic semiconductor as an undoped semiconductor pattern. Each of the first and second regions of the semiconductor layer SCL may be a semiconductor pattern doped with predetermined impurities.

[0211] The gate electrode GE may be disposed on the semiconductor layer SCL with the gate insulating layer GI interposed therebetween. For example, the gate electrode GE may be disposed between the gate insulating layer GI and the interlayer insulating layer ILD to overlap at least a portion of the semiconductor layer SCL.

[0212] The first transistor electrode ET1 and the second transistor electrode ET2 may be disposed on each semiconductor layer SCL and the gate electrode GE, and at least one interlayer insulating layer ILD is disposed between the first transistor electrode ET1 and the second transistor electrode ET2 and each semiconductor layer SCL and the gate electrode GE. For example, the first transistor electrode ET1 and the second transistor electrode ET2 may be disposed between the interlayer insulating layer ILD and the passivation layer PSV. The first transistor electrode ET1 and the second transistor electrode ET2 may be electrically connected to each semiconductor layer SCL. For example, the first transistor electrode ET1 and the second transistor electrode ET2 may be connected to the first region and the second region of the semiconductor layer SCL through corresponding contact holes passing through the gate insulating layer GI and the interlayer insulating layer ILD.

[0213] At least one transistor provided in the pixel circuit PXC may be connected to any one of the pixel electrodes. For example, any one of the first transistor electrode ET1 and the second transistor electrode ET2 of the first transistor T1 may be electrically connected to the first alignment electrode ALE1 and / or the first connection electrode CNL1 of the light source unit LSU provided on the passivation layer PSV through the first contact hole CH1 passing through the passivation layer PSV.

[0214] In an embodiment, at least one signal line and / or power line connected to each pixel PXL may be disposed on the same layer as the layer of one electrode of each of the circuit elements forming the pixel circuit PXC. For example, a second power line PL2 for supplying a second power source VSS may be disposed on the same layer as the layer of the gate electrode GE of the first transistor T1 and the second transistor T2, and may be electrically connected to a second alignment electrode ALE2 and / or a second connection electrode CNL2 of a light source unit LSU disposed on the passivation layer PSV through a bridge pattern BRP disposed on the same layer as the first transistor electrode ET1 and the second transistor electrode ET2 and through at least one second contact hole CH2 passing through the passivation layer PSV. However, the structure and / or position of the second power line PL2, etc. may be changed in various ways.

[0215] In an embodiment, the display element layer DPL may include a light source unit LSU for each of the pixels PXL. For example, the display element layer DPL may include at least one pair of first alignment electrodes ALE1 and second alignment electrodes ALE2 and at least one light emitting element LD electrically connected between the first alignment electrodes ALE1 and the second alignment electrodes ALE2. In addition, the display element layer DPL may further include at least one conductive layer and / or insulating layer, etc.

[0216] For example, the display element layer DPL may include first and second partition walls PW1 and PW2 disposed in each light emitting area EMA, first and second alignment electrodes ALE1 and ALE2 disposed on the first and second partition walls PW1 and PW2, a plurality of light emitting elements LD disposed between the first and second alignment electrodes ALE1 and ALE2, and first and second contact electrodes CNE1 and CNE2 disposed on first and second ends EP1 and EP2 of each of the light emitting elements LD. In addition, the display element layer DPL includes first to third insulating layers INS1, INS2, and INS3 sequentially arranged, and may also selectively include Figure 9a and Figure 9b As already mentioned, the fourth insulating layer INS4 is shown in FIG. Figures 6a to 9b The embodiments related to the structure of the display element layer DPL are described in detail, and thus a detailed description thereof will be omitted.

[0217] In addition, in an embodiment, the bank BNK may be disposed in the peripheral area PEA outside the emission area EMA. For example, the bank BNK may be disposed between the pixels PXL to surround the emission area EMA of each pixel PXL. In addition, the bank BNK may be disposed on the periphery of the display area DA to surround the display area DA in which the pixel PXL is disposed.

[0218] The bank BNK may be a structure defining the emission area EMA of each pixel PXL, for example, a pixel defining layer, and may include at least one light shielding material and / or a reflective material to prevent light from leaking between adjacent pixels PXL.

[0219] In an embodiment, the bank BNK may be disposed between the first insulating layer INS1 and the third insulating layer INS3 in the peripheral area PEA outside the emission area EMA, but the present disclosure is not limited thereto. For example, the position of the bank BNK (eg, the position for each layer) may be changed in various ways.

[0220] Fig.11 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of a pixel PXL forming the light emitting device. Fig.12a It is shown Fig.11A plan view of a first alignment electrode ALE1 and a second alignment electrode ALE2, Figure 12b It is shown Fig.11 A plan view of a first contact electrode CNE1 and a second contact electrode CNE2. In an embodiment, Figure 11 to Figure 12b Show according to Figures 6a to 7b A variation of the pixel PXL of the embodiment. In detail, Figure 11 to Figure 12b The diagram shows the relationship between the shape of the electrode provided in each pixel PXL. Figures 6a to 7b A variation of the embodiment of FIG.

[0221] Show Figure 11 to Figure 12b The plan views of the embodiment and other subsequent embodiments mainly show the shape of the electrodes, and the above-mentioned bank BNK and the like are omitted. Even in the subsequent embodiments, the light emitting area EMA of each pixel PXL may be surrounded by the bank BNK. Figure 11 to Figure 12b In the embodiments and other subsequent embodiments, components that are the same as or similar to those of at least one of the above-described embodiments will be denoted by the same reference numerals, and a detailed description thereof will be omitted.

[0222] Reference Figure 11 to Figure 12b , the first alignment electrode ALE1 may be bent so that a region facing the second alignment electrode ALE2 has a curved surface at a boundary between the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13. For example, the first alignment electrode ALE1 may have a gently curved surface instead of being curved so that an inner surface of the first alignment electrode ALE1 has a predetermined angle at a boundary between the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13. In an embodiment, the first partition wall PW1 may be bent so that at least one region has a curved surface corresponding to the first alignment electrode ALE1, but the present disclosure is not limited thereto.

[0223] In addition, the second alignment electrode ALE2 may have a shape corresponding to that of the first alignment electrode ALE1. For example, the second alignment electrode ALE2 may have a curved surface corresponding to the shape of the first alignment electrode ALE1 in a region facing the curved surface of the first alignment electrode ALE1. In an embodiment, the second partition wall PW2 may be curved so that at least one region has a curved surface corresponding to the second alignment electrode ALE2, but the present disclosure is not limited thereto.

[0224] According to an embodiment, the first alignment electrode ALE1 and the second alignment electrode ALE2 may be spaced apart by a uniform distance throughout the entire region where they face each other. For example, even in a region corresponding to a boundary between the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1, the first alignment electrode ALE1 and the second alignment electrode ALE2 may be spaced apart by a first distance d1 uniformly. Furthermore, even in a region corresponding to a boundary between the main electrode portion ALE21 and the sub-electrode portion ALE22 of the second alignment electrode ALE2, the first alignment electrode ALE1 and the second alignment electrode ALE2 may be spaced apart by a first distance d1 uniformly.

[0225] Similarly, the first contact electrode CNE1 may be curved so that a region facing the second contact electrode CNE2 has a curved surface at a boundary between the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13. For example, an inner surface of the first contact electrode CNE1 may have a gently curved surface at a boundary between the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13.

[0226] In addition, the second contact electrode CNE2 may have a shape corresponding to that of the first contact electrode CNE1. For example, the second contact electrode CNE2 may have a curved surface corresponding to the shape of the first contact electrode CNE1 in a region facing the curved surface of the first contact electrode CNE1.

[0227] According to an embodiment, the first contact electrode CNE1 and the second contact electrode CNE2 may be spaced apart by a uniform distance throughout the entire region in which they face each other. For example, even in a region corresponding to a boundary between the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1, the first contact electrode CNE1 and the second contact electrode CNE2 may be spaced apart by a second distance d2 uniformly. Furthermore, even in a region corresponding to a boundary between the main electrode portion CNE21 and the sub-electrode portion CNE22 of the second contact electrode CNE2, the first contact electrode CNE1 and the second contact electrode CNE2 may be spaced apart by a second distance d2 uniformly.

[0228] Fig.13 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of a pixel PXL forming the light emitting device. Fig.14a It is shown Fig.13 A plan view of a first alignment electrode ALE1 and a second alignment electrode ALE2, Fig.14b It is shown Fig.13 A plan view of a first contact electrode CNE1 and a second contact electrode CNE2. In an embodiment, Figure 13 to Figure 14b Show according to Figure 11 to Figure 12b A variation of the pixel PXL of the embodiment.

[0229] Reference Figure 13 to Figure 14b , the third electrode portion ALE13 of the first alignment electrode ALE1 may be directly connected to the first connection electrode CNL1 without having an opening between the third electrode portion ALE13 and the first connection electrode CNL1 ( Fig.11 In this case, the third electrode portion ALE13 of the first alignment electrode ALE1 may have a larger width.

[0230] In addition, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may be directly connected to the second connection electrode CNL2 without being separated from the second connection electrode CNL2 In this case, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may have a larger width.

[0231] The first contact electrode CNE1 may have a shape corresponding to that of the first alignment electrode ALE1. For example, the third electrode portion CNE13 of the first contact electrode CNE1 may have a greater width to overlap the third electrode portion ALE13 of the first alignment electrode ALE1 and the first connection electrode CNL1.

[0232] In addition, the second contact electrode CNE2 may have a shape corresponding to that of the second alignment electrode ALE2. For example, the sub-electrode portion CNE22 of the second contact electrode CNE2 may have a greater width to overlap the sub-electrode portion ALE22 of the second alignment electrode ALE2 and the second connection electrode CNL2.

[0233] Fig.15 1 is a plan view showing a light emitting device according to an embodiment of the present disclosure, for example, showing an example of a pixel PXL forming the light emitting device. Fig.16a It is shown Fig.15 A plan view of a first alignment electrode ALE1 and a second alignment electrode ALE2, Fig.16b It is shown Fig.15 A plan view of a first contact electrode CNE1 and a second contact electrode CNE2. In an embodiment, Figure 15 to Figure 16b According to the above-mentioned embodiment (for example, Figure 11 to Figure 12b In addition, although in Figure 15 to Figure 16b Although not shown, the pixel PXL according to this embodiment may further selectively include a first partition wall and / or a second partition wall, at least one side of which faces the first end EP1 and the second end EP2 of the light emitting element LD.

[0234] Reference Figure 15 to Figure 16b, the second alignment electrode ALE2 may include a circular main electrode portion ALE21, and the first alignment electrode ALE1 may have a shape corresponding to the shape of the second alignment electrode ALE2. For example, the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1 may surround the main electrode portion ALE21, while each having an open circle shape corresponding to the main electrode portion ALE21 of the second alignment electrode ALE2. In addition, the first electrode portion ALE11, the second electrode portion ALE12, and the third electrode portion ALE13 of the first alignment electrode ALE1 may be uniformly spaced apart from the second alignment electrode ALE2 by a first distance d1.

[0235] In an embodiment, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may have a shape corresponding to the shape of the first alignment electrode ALE1. For example, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may face the first end of each of the first electrode portion ALE11 and the second electrode portion ALE12 of the first alignment electrode ALE1, and may be bent into a shape corresponding to the shape of two peripheral areas of the first alignment electrode ALE1 including the first end of each of the first electrode portion ALE11 and the second electrode portion ALE12. In addition, the sub-electrode portion ALE22 of the second alignment electrode ALE2 may be uniformly spaced apart from the first alignment electrode ALE1 by a first distance d1.

[0236] In addition, the second alignment electrode ALE2 may further include a connection electrode portion ALE23 disposed between the main electrode portion ALE21 and the sub-electrode portion ALE22. The connection electrode portion ALE23 may be integrally or non-integrally connected to the main electrode portion ALE21 and the sub-electrode portion ALE22 to connect the main electrode portion ALE21 and the sub-electrode portion ALE22.

[0237] The first contact electrode CNE1 and the second contact electrode CNE2 may have shapes corresponding to the shapes of the first alignment electrode ALE1 and the second alignment electrode ALE2, respectively. For example, the second contact electrode CNE2 may include a circular main electrode portion CNE21 overlapping the main electrode portion ALE21 of the second alignment electrode ALE2. In addition, the first contact electrode CNE1 may have a shape corresponding to the shape of the second contact electrode CNE2. For example, the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 may surround the main electrode portion CNE21 while each having an open circle shape corresponding to the main electrode portion CNE21 of the second contact electrode CNE2. In addition, the first electrode portion CNE11, the second electrode portion CNE12, and the third electrode portion CNE13 of the first contact electrode CNE1 may be uniformly spaced apart from the second contact electrode CNE2 by a second distance d2.

[0238] In an embodiment, the sub-electrode portion CNE22 of the second contact electrode CNE2 may have a shape corresponding to that of the first contact electrode CNE1. For example, the sub-electrode portion CNE22 of the second contact electrode CNE2 may face a first end of each of the first electrode portion CNE11 and the second electrode portion CNE12 of the first contact electrode CNE1, and may be bent into a shape corresponding to a shape of two peripheral regions of the first contact electrode CNE1 including a first end of each of the first electrode portion CNE11 and the second electrode portion CNE12. In addition, the sub-electrode portion CNE22 of the second contact electrode CNE2 may be uniformly spaced apart from the first contact electrode CNE1 by a second distance d2.

[0239] In addition, the second contact electrode CNE2 may further include a connection electrode portion CNE23 disposed between the main electrode portion CNE21 and the sub-electrode portion CNE22. The connection electrode portion CNE23 may be integrally or non-integrally connected to the main electrode portion CNE21 and the sub-electrode portion CNE22 to connect the main electrode portion CNE21 and the sub-electrode portion CNE22.

[0240] Fig.17 and Fig.18 1 and 2 are plan views showing different examples of a light emitting device according to an embodiment of the present disclosure, for example, a pixel PXL constituting the light emitting device. Fig.17 and Fig.18 According to the above-mentioned embodiment (for example, Figure 15 to Figure 16b A variation of the pixel PXL of an embodiment of the present invention.

[0241] First, refer to Fig.17 , the second alignment electrode ALE2 may have an elliptical shape in a region surrounded by the first alignment electrode ALE1. Fig.16a The main electrode portion ALE21 of the circular second alignment electrode ALE2 shown in FIG. 1 may be formed as shown in FIG. Fig.17 The oval electrode portion is shown in FIG.

[0242] In addition, the first alignment electrode ALE1 has a shape corresponding to that of the second alignment electrode ALE2, so that the spacing distance between the first alignment electrode ALE1 and the second alignment electrode ALE2 can be maintained uniform in a region facing the second alignment electrode ALE2. For example, the first alignment electrode ALE1 can be spaced apart from the second alignment electrode ALE2 by a uniform distance while at least one region is formed in the shape of an open circle having an ellipse.

[0243] Similarly, the second contact electrode CNE2 may have an elliptical shape in a region surrounded by the first contact electrode CNE1. Fig.16bThe main electrode portion CNE21 of the circular second contact electrode CNE2 shown in FIG. 1 may be formed as follows. Fig.17 The oval electrode portion is shown in FIG.

[0244] In addition, the first contact electrode CNE1 may maintain a uniform spacing distance from the second contact electrode CNE2 in the region of the second contact electrode CNE2. For example, the first contact electrode CNE1 may be spaced apart from the second contact electrode CNE2 by a uniform distance while having an elliptical open circle shape.

[0245] Reference Fig.18 , the first alignment electrode ALE1 may be directly connected to the first connection electrode CNL1 without having an opening between the first alignment electrode ALE1 and the first connection electrode CNL1 ( Fig.15 In addition, the first contact electrode CNE1 may have a greater width in the first direction DR1 in a first peripheral region (eg, an upper end region) of the emission area EMA to overlap the first alignment electrode ALE1 and the first connection electrode CNL1.

[0246] The second alignment electrode ALE2 may be directly connected to the second connection electrode CNL2 without being separated from the second connection electrode CNL2. In addition, the second contact electrode CNE2 may have a larger width in the first direction DR1 in the second peripheral region (e.g., the lower end region) of the emission area EMA to overlap the second alignment electrode ALE2 and the second connection electrode CNL2.

[0247] Reference Figures 6a to 18 The pixels PXL and the display device including the pixels PXL according to various embodiments of the present disclosure described above can form the light source unit LSU of each pixel PXL by more efficiently using the light emitting element LD supplied in each light emitting area EMA. In addition, the shapes of the first alignment electrode ALE1 and the second alignment electrode ALE2 and / or the first contact electrode CNE and the second contact electrode CNE2 can be changed in various ways.

[0248] Although the scope of the present disclosure is described by detailed embodiments, it should be noted that the above embodiments are only illustrative and should not be considered as limiting. It should be understood by those skilled in the art that various changes, substitutions and modifications can be made here without departing from the scope of the disclosure as defined by the claims.

[0249] The scope of the present disclosure is not limited by the specific embodiments of the present specification, but should be defined by the appended claims. In addition, all changes or modifications of the present disclosure derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present disclosure.

Claims

1. A display device, comprising: a plurality of pixels, each including a light emitting region, and each including a first electrode and a second electrode provided in the light emitting region to be separated from each other, a plurality of light emitting elements electrically connected between the first electrode and the second electrode, a third electrode electrically connected to the light emitting element through the first electrode, and a fourth electrode electrically connected to the light emitting element through the second electrode; as well as a bank disposed between the light emitting regions of the pixels to surround each of the light emitting regions, Among them, the first electrode includes: a first electrode portion, which is arranged in the light-emitting area to be adjacent to the first side of the second electrode; a second electrode portion, which is arranged in the light-emitting area to be adjacent to the second side of the second electrode; and a third electrode portion, which is constructed to connect the first electrode portion and the second electrode portion between the first electrode portion and the second electrode portion, and is arranged in the light-emitting area to be adjacent to the third side of the second electrode.

2. The display device according to claim 1, wherein: Each of the first electrode portion, the second electrode portion, and the third electrode portion is spaced apart from the second electrode by a distance equal to or smaller than a length of each of the light emitting elements.

3. The display device according to claim 1, wherein: At least two of the first electrode portion, the second electrode portion, and the third electrode portion are spaced apart from the second electrode by the same distance.

4. The display device according to claim 1, in, The first electrode portion and the second electrode portion extend in a first direction in the light emitting region to be parallel to each other, and The third electrode portion extends in the light emitting region along a second direction intersecting the first direction.

5. The display device according to claim 1, wherein: The first electrode portion, the second electrode portion, and the third electrode portion are integrally connected to each other.

6. The display device according to claim 1, in, The first electrode is curved so that a region facing the second electrode has a curved surface at a boundary between the first electrode portion, the second electrode portion, and the third electrode portion, and The second electrode has a curved surface corresponding to the shape of the first electrode in a region facing the curved surface of the first electrode.

7. The display device according to claim 1, wherein: The first electrode portion and the second electrode portion are symmetrical to each other, and the second electrode is provided between the first electrode portion and the second electrode portion.

8. The display device according to claim 1, wherein: The second electrode comprises: a main electrode portion, disposed between the first electrode portion and the second electrode portion and surrounded by the first electrode; and A sub-electrode portion connected to the first end of the main electrode portion and extending in a direction different from a direction in which the main electrode portion extends to face the first end of each of the first electrode portion and the second electrode portion.

9. The display device according to claim 8, in, The first electrode portion, the second electrode portion, and the main electrode portion extend in a first direction in the light emitting region to be parallel to each other, and The third electrode portion and the sub-electrode portion extend in a second direction crossing the first direction in the light emitting region to be parallel to each other.

10. The display device according to claim 1, in, The second electrode includes a circular or elliptical main electrode portion, and The first electrode portion, the second electrode portion, and the third electrode portion surround the main electrode portion while having shapes corresponding to the shape of the main electrode portion.

11. The display device according to claim 10, wherein: The second electrode further includes a sub-electrode portion connected to the main electrode portion and disposed in the light emitting region to face a first end of each of the first electrode portion and the second electrode portion.

12. The display device according to claim 1, wherein: Each of the light emitting elements comprises: a first end overlapping the first electrode and electrically connected to the first electrode; and The second end overlaps with the second electrode and is electrically connected to the second electrode.

13. The display device according to claim 12, wherein: The third electrode overlaps the first electrode while having a shape corresponding to that of the first electrode, and is electrically connected to the first end of the light emitting element through the first electrode, and The fourth electrode overlaps the second electrode while having a shape corresponding to that of the second electrode, and is electrically connected to the second end of the light emitting element through the second electrode.

14. The display device according to claim 13, in, The third electrode is electrically connected to a first line to which a first power or a first driving signal is supplied, and The fourth electrode is electrically connected to a second line to which a second power or a second driving signal is supplied.

15. The display device according to claim 13, wherein: Each of the pixels further comprises: a first partition wall disposed under the third electrode while having a width narrower than that of the third electrode and having a shape corresponding to that of the third electrode; and A second partition wall is disposed under the fourth electrode while having a width narrower than that of the fourth electrode and having a shape corresponding to that of the fourth electrode.

16. A display device, comprising: a plurality of pixels, each including a light emitting region, and each including a first electrode and a second electrode provided in the light emitting region to be separated from each other, a plurality of light emitting elements electrically connected between the first electrode and the second electrode, a third electrode electrically connected to the light emitting element through the first electrode, and a fourth electrode electrically connected to the light emitting element through the second electrode; as well as a bank disposed between the light emitting regions of the pixels to surround each of the light emitting regions, Wherein, the second electrode includes: a main electrode portion, which is arranged in the light-emitting area to be surrounded by the first electrode; and a sub-electrode portion, which is connected to a first end of the main electrode portion and extends in the light-emitting area in a direction different from the direction in which the main electrode portion extends to face the opposite end of the first electrode.

17. The display device according to claim 16, wherein: The first electrode comprises: a first electrode portion disposed in the light emitting region to be adjacent to a first side of the main electrode portion; a second electrode portion disposed in the light emitting region to be adjacent to a second side of the main electrode portion; and A third electrode portion is configured to connect the first electrode portion and the second electrode portion between the first electrode portion and the second electrode portion, and is provided in the light emitting region to be adjacent to a third side of the main electrode portion.

18. The display device according to claim 17, wherein: Each of the first electrode portion, the second electrode portion, and the third electrode portion is spaced apart from the second electrode by a distance equal to or smaller than a length of each of the light emitting elements.

19. The display device according to claim 17, wherein: At least two of the first electrode portion, the second electrode portion, and the third electrode portion are spaced apart from the second electrode by the same distance.

20. The display device according to claim 16, wherein: The third electrode overlaps the first electrode while having a shape corresponding to that of the first electrode, and is electrically connected to the first end of the light emitting element through the first electrode, and The fourth electrode overlaps the second electrode while having a shape corresponding to that of the second electrode, and is electrically connected to the second end of the light emitting element through the second electrode.

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