Display device

Abstract

A display device is provided. The display device includes: a first electrode and a second electrode, the second electrode being disposed to be spaced apart from and face the first electrode; a light blocking layer disposed above the first electrode and the second electrode; and at least one light emitting element disposed between the first electrode and the second electrode. The light blocking layer includes a light blocking portion for absorbing light and an opening pattern. The light blocking portion includes an electrode overlapping region overlapping with a part of the first electrode and the second electrode. The opening pattern exposes some portions of the first electrode and the second electrode facing each other and at least a part of the region between the first electrode and the second electrode facing each other. The at least one light emitting element may be disposed to overlap with the opening pattern.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a display device including a light-blocking layer for preventing external light from being reflected by an electrode. Background Art

[0002] With the development of multimedia, the importance of display devices is increasing. Accordingly, various types of display devices, such as organic light-emitting diode (OLED) displays and liquid crystal displays (LCDs), are being used.

[0003] A display device is a device that displays an image and includes a display panel, such as an organic light-emitting display panel or a liquid crystal display panel. Among these display panels, the display device may include a light-emitting element as a light-emitting display panel. For example, a light-emitting diode (LED) may include an OLED using an organic material as a fluorescent material, an inorganic light-emitting diode using an inorganic material as a fluorescent material, and the like.

[0004] An inorganic light-emitting diode using an inorganic semiconductor as a fluorescent material has durability even in a high-temperature environment and has high blue light efficiency compared to an OLED. In addition, even in a manufacturing process pointed out as a limitation of a conventional inorganic light-emitting diode element, a transfer method using a dielectrophoresis (DEP) method has been developed. Accordingly, continuous research has been conducted on inorganic light-emitting diodes having excellent durability and efficiency compared to OLEDs. Summary of the Invention

[0005] Technical Problem

[0006] Aspects of the present disclosure provide a display device including a light-blocking layer for preventing reflection of external light caused by an electrode.

[0007] It should be noted that the object of the present disclosure is not limited to the above object, and for those skilled in the art, other objects of the present disclosure will be apparent from the following description.

[0008] Technical Solution

[0009] According to an embodiment of the present disclosure, a display device includes: a first electrode and a second electrode, the second electrode being disposed to be spaced apart from and face the first electrode; a light-blocking layer disposed on the first electrode and the second electrode; and one or more light-emitting elements disposed between the first electrode and the second electrode, wherein the light-blocking layer includes a light-blocking portion configured to absorb light and an opening pattern, the light-blocking portion includes an electrode overlapping region overlapping at least a part of the first electrode and the second electrode, the opening pattern exposes portions of the first electrode and the second electrode facing each other, and at least a part of the region between the first electrode and the second electrode facing each other, and the one or more light-emitting elements are disposed to overlap with the opening pattern.

[0010] The light-blocking portion may be directly disposed on the upper surfaces of the first electrode and the second electrode. At least a part of the light-blocking portion may be recessed from each of the side surfaces of the first electrode and the second electrode, and an opening pattern may be disposed in the recessed area of the light-blocking portion.

[0011] The light-blocking portion may include at least one selected from chromium oxide (CrO x ), chromium-chromium oxide (Cr / CrO x ), molybdenum oxide (MoO x ), carbon pigment, and a three-color pigment of red-green-blue (RGB).

[0012] The display device may further include a first insulating layer disposed to cover at least a part of the first electrode and the second electrode, wherein the light-blocking layer is disposed on the first insulating layer.

[0013] The opening pattern may include a first opening pattern and a second opening pattern spaced apart from each other, and a light-blocking portion bridge may be disposed in the separation area between the first opening pattern and the second opening pattern.

[0014] The display device may further include contact electrodes disposed on the first insulating layer and in partial contact with the light-emitting element, wherein the contact electrodes include a first contact electrode in contact with one end of the first electrode and the light-emitting element and a second contact electrode in contact with the other end of the second contact electrode and the light-emitting element.

[0015] The contact electrodes may be disposed such that at least a part of the contact electrodes overlaps with the opening pattern.

[0016] At least a part of the contact electrodes may partially overlap with the light-blocking portion.

[0017] The display device may further include a second insulating layer disposed to cover the first electrode, the second electrode, and the light-emitting element.

[0018] The light-blocking layer may be disposed on the second insulating layer, and the light-emitting element may further include a first light-emitting element disposed to overlap with the opening pattern and a second light-emitting element disposed to overlap with the light-blocking portion.

[0019] The light-blocking layer may further include a reflective portion disposed between the second insulating layer and the light-blocking portion.

[0020] At least a part of the first light emitted from the first light-emitting element may be emitted through the opening pattern, and at least a part of the second light emitted from the second light-emitting element may be reflected from the reflective portion toward the opening pattern.

[0021] The display device may further include a color conversion section that is disposed on the second insulating layer and configured to convert the wavelength of light emitted from the light-emitting element, and at least a part of the light is incident on the color conversion section, wherein a light-blocking layer is further disposed on the color conversion section.

[0022] According to an embodiment of the present disclosure, a display device includes: a first electrode and a second electrode that extend in a first direction and are disposed to be spaced apart from each other; a light-blocking layer disposed on the first electrode and the second electrode; and one or more light-emitting elements disposed between the first electrode and the second electrode, and two ends of the one or more light-emitting elements are electrically connected to the first electrode and the second electrode, wherein the light-blocking layer includes a light-blocking portion configured to absorb light and at least one opening pattern, at least a part of the opening pattern extends in the first direction, at least a part of the region of the light-blocking portion overlaps with the first electrode and the second electrode, the opening pattern exposes portions of the first electrode and the second electrode facing each other and exposes at least a part of the region between the first electrode and the second electrode facing each other, and the one or more light-emitting elements are disposed to overlap with the opening pattern.

[0023] The display device may further include a first insulating layer disposed to cover at least a part of the first electrode and the second electrode, wherein the light-blocking layer is disposed on the first insulating layer.

[0024] The light-blocking portion may include at least one selected from chromium oxide (CrO x ), chromium-chromium oxide (Cr / CrO x ) mixture, molybdenum oxide (MoO x ), carbon pigment, and a three-color pigment of red-green-blue (RGB).

[0025] The opening pattern may include a first opening pattern and a second opening pattern that extend in the first direction, and the widths of the first opening pattern and the second opening pattern may be greater than the interval between the first electrode and the second electrode.

[0026] The light-blocking portion may include a light-blocking portion bridging portion disposed between the first opening pattern and the second opening pattern that are spaced apart from each other.

[0027] The first opening pattern and the second opening pattern may be spaced apart from each other in the first direction, and the light-blocking portion bridging portion may extend in a second direction different from the first direction.

[0028] The first opening pattern and the second opening pattern may be spaced apart from each other in a third direction different from the first direction, and the light-blocking portion bridging portion may extend in the first direction.

[0029] Other details of the embodiments for solving the above problems are included in the detailed description and the drawings.

[0030] Beneficial effects

[0031] A display device according to one embodiment includes a light blocking layer disposed in a non-emitting region of each pixel and configured to overlap at least a portion of each electrode. The light blocking layer absorbs external light incident on the electrode, thereby reducing reflection of the external light by the electrode. Further, the light blocking layer according to another embodiment further includes a reflective layer thereunder, thereby reflecting light emitted from the non-emitting region to the emitting region.

[0032] Accordingly, the display device can reduce reflection of external light and can concentrate light emitted from the inorganic light emitting diode to the emitting region, thereby improving light efficiency per unit pixel.

[0033] The effects of the present disclosure are not limited to the embodiments set forth herein, and more different effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a plan view of a display device according to one embodiment.

[0035] Figure 2 is a schematic cross-sectional view showing a display device according to one embodiment.

[0036] Figure 3 is along Figure 1 sections taken along lines Ia-Ia', IIa-IIa' and IIIa-IIIa' of.

[0037] Figure 4 is according to Figure 3 another embodiment of a cross-sectional view.

[0038] Figure 5 is along Figure 1 sections taken along line IIb-IIb' of.

[0039] Figure 6 is a schematic cross-sectional view showing a non-emitting region of a display device according to another embodiment.

[0040] Figure 7 is Figure 1 a magnified view of the emitting region of.

[0041] Figure 8 is a schematic view of a light emitting element according to one embodiment.

[0042] Figure 9 is a schematic view of a light emitting element according to another embodiment.

[0043] Figure 10 It is a schematic cross-sectional view showing a light-emitting element disposed between electrodes according to another embodiment.

[0044] Figures 11 to 18 It is a schematic cross-sectional view showing a method of manufacturing a display device according to one embodiment.

[0045] Figures 19 to 21 It is a plan view of a display device according to other embodiments.

[0046] Figure 22 It is a plan view of a display device according to another embodiment.

[0047] Figure 23 It is along Figure 19 The cross-sectional view taken along the line IIc-IIc'.

[0048] Figure 24 It is according to yet another embodiment Figure 22 The plan view of the display device.

[0049] Figure 25 It is a plan view of a display device according to still another embodiment.

[0050] Figure 26 It is along Figure 25 The cross-sectional view taken along the line IId-IId'.

[0051] Figure 27 It is along Figure 25 The cross-sectional view taken along the line IIe-IIe'.

[0052] Figure 28 And Figure 29 It is a schematic cross-sectional view showing a display device according to still another embodiment.

[0053] Figure 30 It is a cross-sectional view of a display device according to still another embodiment.

[0054] Figure 31 It is a plan view of a display device according to still another embodiment.

[0055] Figure 32 It is along Figure 31 The cross-sectional view taken along the line IIf-IIf'.

[0056] Figure 33 It is a cross-sectional view taken along the line IIf-IIf' according to still another embodiment along Figure 31 The line IIf-IIf'. Detailed Description

[0057] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown. However, the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0058] It should also be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or an intervening layer may also be present. Throughout the specification, the same reference numerals denote the same components.

[0059] It should 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. These terms are only used to distinguish one element from another. For example, without departing from the teachings of the present invention, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0060] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0061] Figure 1 is a plan view of a display device according to an embodiment.

[0062] Reference Figure 1 , the display device 10 may include a plurality of pixels PX. Each of the pixels PX may include one or more light-emitting elements 300 configured to emit light having a specific wavelength, thereby displaying a specific color.

[0063] Each of the plurality of pixels PX may include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3. The first sub-pixel PX1 may emit light having a first color, the second sub-pixel PX2 may emit light having a second color, and the third sub-pixel PX3 may emit light having a third color. The first color may be red, the second color may be green, and the third color may be blue, but the present disclosure is not limited thereto. In some cases, the sub-pixels PXn may emit light having the same color. In addition, although Figure 1 shows that each of the pixels PX includes three sub-pixels, the present disclosure is not limited thereto, and each of the pixels PX may include four or more sub-pixels.

[0064] Each of the sub-pixels PXn of the display device 10 may include regions defined as an emission region LA and a non-emission region NLA. The emission region LA is defined as a region in which the light-emitting element 300 included in the display device 10 is arranged to emit light having a specific wavelength. The non-emission region NLA may be defined as a region other than the emission region LA, in which the light-blocking layer 800 described below is provided.

[0065] The display device 10 according to one embodiment may include a light-blocking layer 800 provided on the electrodes 210 and 220, which are provided in each pixel PX or sub-pixel PXn. The light-blocking layer 800 may absorb externally incident light to prevent the light from being reflected by the electrodes 210 and 220 and emitted to the outside. The light-blocking layer 800 may be provided in a region other than the emission region LA where the light emitted from the light-emitting element 300 is displayed. That is, the emission region LA of each pixel PX or sub-pixel PXn may be understood as a region where the light-blocking layer 800 is not provided, and its non-emission region NLA may be understood as a region where the light-blocking layer 800 is provided. A more detailed description will be given below.

[0066] The sub-pixel PXn of the display device 10 may include a plurality of banks 400, a plurality of electrodes 210 and 220, a plurality of light-emitting elements 300, and a light-blocking layer 800 provided in at least a part of the region of the sub-pixel PXn.

[0067] The plurality of electrodes 210 and 220 may be electrically connected to the light-emitting element 300 and may receive a predetermined voltage so that the light-emitting element 300 emits light. In addition, at least a part of each of the electrodes 210 and 220 may be used to form an electric field in the sub-pixel PXn to align the light-emitting element 300.

[0068] Referring to Figure 1 Describing the electrodes 210 and 220 in detail, the plurality of electrodes 210 and 220 may include a first electrode 210 and a second electrode 220. In an embodiment, the first electrode 210 may be a pixel electrode separated for each sub-pixel PXn, and the second electrode 220 may be a common electrode commonly connected along each sub-pixel PXn. One of the first electrode 210 and the second electrode 220 may be an anode of the light-emitting element 300, and the other thereof may be a cathode of the light-emitting element 300. However, the present disclosure is not limited thereto, and the reverse case is also true.

[0069] The first electrode 210 and the second electrode 220 may include electrode rod portions 210S and 220S and one or more electrode branch portions 210B and 220B. The electrode rod portions 210S and 220S are arranged to extend in a first direction D1, and the one or more electrode branch portions 210B and 220B branch from the electrode rod portions 210S and 220S to extend in a second direction D2, which is a direction intersecting the first direction D1, respectively.

[0070] Specifically, the first electrode 210 may include a first electrode rod portion 210S and one or more first electrode branch portions 210B. The first electrode rod portion 210S is arranged to extend in the first direction, and the one or more first electrode branch portions 210B branch from the first electrode rod portion 210S to extend in the second direction D2 (Y-axis direction).

[0071] The first electrode rod portion 210S of any pixel may be substantially arranged on the same straight line as the first electrode rod portions 210S of adjacent sub-pixels belonging to the same row (e.g., adjacent to it in the first direction D1). In other words, both ends of the first electrode rod portion 210S of a pixel may be spaced apart from the sub-pixel PXn and terminate between the sub-pixels PXn, and the first electrode rod portions 210S of adjacent pixels may be aligned on the extension line of the first electrode rod portion 210S of a pixel. Therefore, the first electrode rod portion 210S provided in each sub-pixel PXn may apply different electrical signals to the first electrode branch portions 210B, and each of the first electrode branch portions 210B may be driven independently.

[0072] The first electrode branch portion 210B may branch from at least a part of the first electrode rod portion 210S, be arranged to extend in the second direction D2, and may terminate in a state spaced apart from the second electrode rod portion 220S arranged opposite to the first electrode rod portion 210S.

[0073] The second electrode 220 may include a first electrode rod portion 220S and a second electrode branch portion 220B. The first electrode rod portion 220S is arranged to extend in the first direction D1, is spaced apart from and faces the first electrode rod portion 210S, and the second electrode branch portion 220B branches from the second electrode rod portion 220S and is arranged to extend in the second direction D2. However, one end of the second electrode rod portion 220S may extend to a plurality of adjacent sub-pixels PXn in the first direction D1. Therefore, both ends of the second electrode rod portion 220S of any pixel may be connected to the other ends of the second electrode rod portions 220S of adjacent pixels in the pixel PX.

[0074] The second electrode branch portion 220B may be configured to be spaced apart from and face the first electrode branch portion 210B, and may terminate in a state spaced apart from the first electrode rod portion 210S. That is, one end of the second electrode branch portion 220B may be connected to the second electrode rod portion 220S, and the other end thereof may be disposed in the sub-pixel PXn in a state spaced apart from the first electrode rod portion 210S.

[0075] In addition, one or more first electrode branch portions 210B may be disposed in each sub-pixel PXn. Figure 1 Two first electrode branch portions 210B are shown to be provided and a second electrode branch portion 220B is provided therebetween, but the present disclosure is not limited thereto. More first electrode branch portions 210B may be provided, or one first electrode branch portion 210B may be provided, and two second electrode branch portions 220B may be provided. In some embodiments, the second electrode branch portion 220B may be provided between the first electrode branch portions 210B, and thus, each sub-pixel PXn may have a symmetric structure based on the second electrode branch portion 220B. However, the present disclosure is not limited thereto.

[0076] The plurality of banks 400 may include a third bank 430 provided at a boundary between the sub-pixels PXn and first and second banks 410 and 420 respectively provided below the electrodes 210 and 220. In the drawings, only the first electrode 210 and the second electrode 220 are shown, and the first bank 410 and the second bank 420 are not shown. However, in each sub-pixel PXn, first and second banks 410 and 420 having substantially the same shape as the first electrode branch portion 210B and the second electrode branch portion 220B may be provided. That is, it can be understood that the first electrode branch portion 210B and the second electrode branch portion 220B are respectively provided on the first bank 410 and the second bank 420.

[0077] The third bank portion 430 may be disposed at boundaries between the first sub-pixel PX1 and the second sub-pixel PX2 and between the second sub-pixel PX2 and the third sub-pixel PX3. Ends of the plurality of first electrode bar portions 210S may be spaced apart from each other and terminated based on the third bank portion 430. The third bank portion 430 may extend in the second direction D2 and may be disposed at boundaries between sub-pixels PXn arranged in the first direction D1. However, the present disclosure is not limited thereto, and the third bank portion 430 may extend in the first direction D1 and may be disposed at boundaries between sub-pixels PXn arranged in the second direction D2. That is, the plurality of sub-pixels PXn may be separated based on the third bank portion 430. The third bank portion 430 may include the same material as the first bank portion 410 and the second bank portion 420 and may thus be formed by substantially the same process as the first bank portion 410 and the second bank portion 420. The plurality of bank portions 400 will be described in more detail with reference to other drawings below.

[0078] Although not shown in Figure 1 , a first insulating layer 510 may be disposed in each sub-pixel PXn to completely cover the sub-pixel PXn including the first electrode branch portion 210B and the second electrode branch portion 220B. The first insulating layer 510 may protect each of the electrodes 210 and 220 and at the same time insulate the electrodes 210 and 220 from each other such that the electrodes 210 and 220 do not directly contact each other.

[0079] A light blocking layer 800 may be disposed on each of the electrodes 210 and 220. The light blocking layer 800 may be disposed to completely cover the sub-pixel PXn or each of the electrodes 210 and 220 and may be disposed to partially expose the first electrode branch portion 210B and the second electrode branch portion 220B. The light blocking layer 800 may be disposed on the first insulating layer 510 to overlap each of the electrodes 210 and 220, but the present disclosure is not limited thereto. In some cases, the light blocking layer 800 may be disposed to directly contact each of the electrodes 210 and 220 or may be disposed on a passivation layer 550 (shown in Figure 3 ) to be described below.

[0080] The light blocking layer 800 may include a light blocking portion 810 and an opening pattern 820. The light blocking portion 810 is disposed to overlap with each of the electrodes 210 and 220, and the opening pattern 820 exposes at least a partial region of the electrodes 210 and 220. The light blocking portion 810 may be disposed substantially entirely on the sub-pixel PXn, and the opening pattern 820 may be formed in a region where the light blocking portion 810 is not disposed. However, the arrangement and shape of the light blocking portion 810 are not limited thereto, as long as the light blocking portion 810 can reduce the reflection of external light caused by the electrodes 210 and 220. In some embodiments, the light blocking portion 810 may be disposed to overlap only with each of the electrodes 210 and 220, and in this case, a separate opening pattern 820 may not be formed in the light blocking layer 800.

[0081] The light blocking portion 810 of the light blocking layer 800 may include a material that absorbs incident light and may absorb external light incident on the display device 10. The electrodes 210 and 220 of the display device 10 may include a material having a high reflectivity, and thus, the external light incident on the display device 10 may be reflected by the electrodes 210 and 220 and emitted again from the display device 10 to the outside. The reflection of external light by the display device 10 may reduce the visibility of the light emitted from the light emitting element 300. To prevent the reflection of external light, the display device 10 according to one embodiment includes a light blocking portion 810 that partially overlaps with the electrodes 210 and 220, thereby reducing the reflection of external light by the display device 10. A more detailed description will be given below.

[0082] The opening pattern 820 may expose a part of each of the electrodes 210 and 220. For example, it may expose a part of the first electrode branch portion 210B and a part of the second electrode branch portion 220B. The position where the opening pattern 820 is formed is not particularly limited. In the drawings, the opening pattern 820 is shown as being positioned adjacent to the central portion of each sub-pixel PXn, but in some cases, the opening pattern 820 may be positioned adjacent to the upper side or the lower side of the sub-pixel PXn.

[0083] In addition, in the drawings, the opening pattern 820 is shown as having a shape in which two short sides are parallel to each other and the region where each short side intersects is angled, but the present disclosure is not limited thereto. More than one opening pattern 820 may be formed in the light blocking layer 800 and may have various shapes.

[0084] The opening pattern 820 can provide a path through which light emitted from the light-emitting element 300 and reflected by the electrodes 210 and 220 travels to the outside of the display device 10. The light-emitting element 300 can be disposed between the first electrode branch portion 210B and the second electrode branch portion 220B exposed by the opening pattern 820. The light emitted from the light-emitting element 300 can not be blocked by the light-blocking portion 810 and can be emitted to the outside of the display device 10. That is, it can be understood that the emission region LA of each sub-pixel PXn is the region where the opening pattern 820 provided with the light-blocking layer 800 is disposed and through which the light emitted from the light-emitting element 300 travels, and the non-emission region NLA is the region where the light is blocked by the light-blocking portion 810.

[0085] A plurality of light-emitting elements 300 can be aligned between the first electrode branch portion 210B and the second electrode branch portion 220B. In at least some of the plurality of light-emitting elements 300, one end thereof can be electrically connected to the first electrode branch portion 210B, and the other end thereof can be electrically connected to the second electrode branch portion 220B.

[0086] The plurality of light-emitting elements 300 can be spaced apart from each other in the second direction D2 and can be aligned substantially parallel to each other. The spacing distance between the light-emitting elements 300 is not particularly limited. In some cases, the plurality of light-emitting elements 300 can be disposed adjacent to each other to form a group, and a plurality of other light-emitting elements 300 can form a group in a state of being spaced apart from each other by a predetermined interval and can be oriented and aligned in one direction with non-uniform density.

[0087] According to one embodiment, at least some of the plurality of light-emitting elements 300 can be disposed in the region of the opening pattern 820 in which the light-blocking layer 800 is disposed. The region in which the light-emitting element 300 is disposed can be the region on the electrodes 210 and 220 where the opening pattern 820 is located and the light-blocking portion 810 is not located. Therefore, the emission region LA where the light-emitting element 300 is disposed to emit predetermined light and the non-emission region NLA can be separated according to the position of the opening pattern 820 of the light-blocking layer 800 and the light-blocking portion 810.

[0088] However, the present disclosure is not limited thereto, and in some cases, the light-emitting element 300 may be disposed on the electrodes 210 and 220 of the light-blocking portion 810 on which the light-blocking layer 800 is disposed. In this case, the light-blocking portion 810 may be disposed to partially cover the electrodes 210 and 220, and thus may be disposed to expose partial regions of the electrodes 210 and 220, for example, expose the side surfaces of the electrodes 210 and 220. The light emitted from the light-emitting element 300 may be reflected to the outside of the display device 10 through the side surfaces, and the external incident light may be absorbed by the light-blocking portion 810 covering the electrodes 210 and 220.

[0089] The contact electrode 260 may be disposed on each of the first electrode branch portion 210B and the second electrode branch portion 220B. However, the contact electrode 260 may be substantially disposed on the first insulating layer 510 and may overlap with the first electrode branch portion 210B and the second electrode branch portion 220B.

[0090] A plurality of contact electrodes 260 may be disposed to extend in the second direction D2 and may be disposed to be spaced apart from each other in the first direction D1. The contact electrode 260 may be in contact with at least one end of the light-emitting element 300. The contact electrode 260 may be in contact with the first electrode 210 or the second electrode 220 to receive an electrical signal. Accordingly, the contact electrode 260 may transmit the electrical signal transmitted from each of the electrodes 210 and 220 to the light-emitting element 300.

[0091] The contact electrode 260 may include a first contact electrode 261 and a second contact electrode 262, and the first contact electrode 261 and the second contact electrode 262 are respectively disposed to partially cover the electrode branch portions 210B and 220B and are in contact with one end or the other end of the light-emitting element 300.

[0092] The first contact electrode 261 may be disposed on the first electrode branch portion 210B and may be in contact with one end of the light-emitting element 300 such that one end may be electrically connected to the first electrode 210. The second contact electrode 262 may be disposed on the second electrode branch portion 220B and may be in contact with the other end of the light-emitting element 300 such that the other end may be electrically connected to the second electrode 220.

[0093] As shown in the accompanying drawings, since the light-emitting element 300 is disposed in a region where the opening pattern 820 is located on the electrodes 210 and 220, the contact electrode 260 may also be disposed in the region where the opening pattern 820 is located. However, the contact electrode 260 may extend to a region overlapping with the light-blocking portion 810 on the first electrode branch portion 210B and the second electrode branch portion 220B to overlap with the light-blocking portion 810. That is, the contact electrode 260 may be disposed in the region where the opening pattern 820 is located and may be disposed to overlap with the light-blocking portion 810. However, the present disclosure is not limited thereto, and in some cases, the contact electrode 260 may be disposed not to overlap with the light-blocking portion 810. This will be described in detail below with reference to other embodiments.

[0094] The first electrode rod portion 210S and the second electrode rod portion 220S may be electrically connected to the first transistor 120 or the power line 161, which will be described below, through contact holes (e.g., the first electrode contact hole CNTD and the second electrode contact hole CNTS), respectively. In the accompanying drawings, one second electrode contact hole CNTS is shown as being formed in the second electrode rod portion 220S of a plurality of sub-pixels PXn. However, the present disclosure is not limited thereto, and in some cases, the second electrode contact hole CNTD may be formed for each sub-pixel PXn.

[0095] In addition, although not shown in Figure 1 , the display device 10 may include a second insulating layer 520 (shown in Figure 3 ) and a passivation layer 550 (shown in Figure 3 ), and the second insulating layer 520 and the passivation layer 550 are disposed to cover each of the electrodes 210 and 220 and at least a part of the light-emitting element 300. Their arrangement and structure will be described below with reference to Figure 3 .

[0096] Meanwhile, as described above, the light-blocking portion 810 may include a material that absorbs externally incident light. According to one embodiment, the light-blocking portion 810 may include chromium oxide (CrO x ), a chromium-chromium oxide (Cr / CrO x ) mixture, molybdenum oxide (MoO x ), carbon pigment, a three-color pigment of red-green-blue (RGB), etc. However, the present disclosure is not limited thereto.

[0097] As described below, each of the electrodes 210 and 220 may include a material having a high reflectivity to reflect the light emitted from the light-emitting element 300 to the outside, or reflect the light in the upward direction of each of the electrodes 210 and 220. In this case, in addition to the light emitted from the light-emitting element 300, the external light incident on the display device 10 may be reflected by the electrodes 210 and 220. The incident and re-reflected external light (i.e., the reflected external light) may be visible to the user of the display device 10, thereby reducing the visibility of the light emitted from the display device 10. Therefore, the display device 10 according to an embodiment may include a light-blocking layer 800 that partially overlaps the electrodes 210 and 220, thereby preventing the reflection of the externally incident light.

[0098] Figure 2 is a schematic cross-sectional view showing a display device according to an embodiment.

[0099] As described above, the display device 10 according to an embodiment may include a light-blocking layer 800 disposed on the electrodes 210 and 220, and the light-blocking layer 800 may include a light-blocking portion 810 disposed to partially overlap each of the electrodes 210 and 220 and an opening pattern 820 in which the light-blocking portion 810 is not provided. Figure 2 may be understood as a cross-section taken in one direction showing the region where the opening pattern 820 is located and the region where the light-blocking portion 810 is located in the display device 10.

[0100] Referring to Figure 2 , the light-emitting element 300 may be disposed between the first electrode 210 and the second electrode 220, and the emitted light EL emitted from the light-emitting element 300 may be reflected by the electrodes 210 and 220. The electrodes 210 and 220 may include a material having a high reflectivity, and the emitted light EL incident on partial regions of the electrodes 210 and 220 (e.g., the side surfaces of the electrodes 210 and 220 as shown in the drawings) may be reflected in the upward direction of the electrodes 210 and 220. The emitted light EL reflected by the electrodes 210 and 220 may be visible outside the display device 10.

[0101] However, as shown in the drawings, the incident light IL from outside the display device 10 may also be incident on the electrodes 210 and 220. The incident light IL directed to the upper surfaces of the electrodes 210 and 220 may be reflected again and emitted to the outside of the display device 10 (see Figure 2 of IL'). In this case, since the emitted light EL and the reflected incident light IL' are simultaneously visible outside the display device 10, the visibility of the emitted light EL emitted from each sub-pixel PXn may be reduced.

[0102] Meanwhile, a display device 10 according to an embodiment may include a light-blocking portion 810 disposed to overlap at least a portion of electrodes 210 and 220, and the light-blocking portion 810 may absorb external incident light IL incident toward the electrodes 210 and 220. Since the light-blocking portion 810 is not disposed on one side surface of the electrodes 210 and 220 where the light-emitting element 300 is disposed, the emitted light EL emitted from the light-emitting element 300 may be reflected in the upward direction of the electrodes 210 and 220. On the contrary, since the light-blocking portion 810 is disposed on the other side surface of the electrodes 210 and 220 opposite to the one side surface, the incident light IL incident on the other side surface may be absorbed by the light-blocking portion 810. Accordingly, the amount of the incident light IL' reflected by the electrodes 210 and 220 may be reduced, and the visibility of the emitted light EL emitted from the light-emitting element 300 may be improved.

[0103] Meanwhile, the drawings illustrate a state in which the light-emitting element 300 is disposed in each of a region where the light-blocking layer 800 is not disposed and a region where the light-blocking layer 800 is disposed. In some cases, the light-emitting element 300 may be disposed on the electrodes 210 and 220, where the light-blocking portion 810 is disposed on the electrodes 210 and 220 in the entire region of the pixel PX or the sub-pixel PXn.

[0104] However, as described above, the pixel PX or the sub-pixel PXn of the display device 10 may be divided into a region where the light-blocking portion 810 is disposed and a region where the opening pattern 820 is disposed, and the light-emitting element 300 may be disposed only in the region where the opening pattern 820 is disposed. In this case, the region where the light-blocking portion 810 overlaps the electrodes 210 and 220 may be a region where the incident light IL is absorbed, and the region where the opening pattern 820 overlaps the electrodes 210 and 220 may be a region where the emitted light EL and the reflected incident light IL' are simultaneously emitted.

[0105] In the display device 10 according to an embodiment, the opening pattern 820 may be formed in a region where the amount of light required for each sub-pixel PXn is to be emitted, and the light-blocking portion 810 may be disposed only in an unnecessary region other than the required region. That is, in the display device 10, the light-blocking portion 810 may be disposed in a region other than a partial region of the pixel PX or the sub-pixel PXn, thereby minimizing the reflection of external light by the display device 10 to improve the visibility of the emitted light EL.

[0106] Meanwhile, the display device 10 may further include a circuit element layer positioned under each of the electrodes 210 and 220 shown in Figure 1 which will be described in detail with reference to other drawings below.

[0107] Figure 3 are cross-sectional views taken along the lines Ia-Ia', IIa-IIa' and IIIa-IIIa' of Figure 1 . Figure 4 is a cross-sectional view of another embodiment according to Figure 3 . Figure 5 is a cross-sectional view taken along the line IIb-IIb' of Figure 1 . Figures 3 to 5 Only the cross-sectional view of the first sub-pixel PX1 is shown, but it can also be applied to other pixels PX or sub-pixels PXn. Figure 3 shows a cross-section across one end and the other end of any light-emitting element 300.

[0108] Referring to Figure 1 and Figure 3 , the display device 10 may include a substrate 110, a buffer layer 115, a first bridging pattern 181 and a second bridging pattern 182, a first transistor 120 and a second transistor 140, electrodes 210 and 220 disposed on the first transistor 120 and the second transistor 140, and a light-emitting element 300.

[0109] Specifically, the substrate 110 may be an insulating substrate. The substrate 110 may be made of an insulating material such as glass, quartz, or a polymer resin. In addition, the substrate 110 may be a rigid substrate or a flexible substrate that is bendable, foldable, and rollable.

[0110] The first bridging pattern 181 and the second bridging pattern 182 may be disposed on the substrate 110. The first bridging pattern 181 may be electrically connected to a first drain electrode 123 of the first transistor 120 to be described below. The second bridging pattern 182 may be electrically connected to a second drain electrode 143 of the second transistor 140.

[0111] The first bridging pattern 181 and the second bridging pattern 182 are disposed to overlap with a first active material layer 126 of the first transistor 120 and a second active material layer 146 of the second transistor 140, respectively. The first bridging pattern 181 and the second bridging pattern 182 may include a light-blocking material to prevent light from incident on the first active material layer 126 and the second active material layer 146. As an example, the first bridging pattern 181 and the second bridging pattern 182 may be made of an opaque metal material that blocks light transmission.

[0112] The buffer layer 115 is disposed on the first bridging pattern 181, the second bridging pattern 182, and the substrate 110. The buffer layer 115 may be disposed to completely cover the substrate 110 (including the first bridging pattern 181 and the second bridging pattern 182). The buffer layer 115 may prevent the diffusion of impurity ions, prevent the penetration of moisture or ambient air, and perform a surface planarization function. In addition, the buffer layer 115 may insulate the first bridging pattern 181 and the second bridging pattern 182 from the first active material layer 126 and the second active material layer 146.

[0113] The semiconductor layer is disposed on the buffer layer 115. The semiconductor layer may include the first active material layer 126 of the first transistor 120, the second active material layer 146 of the second transistor 140, and the auxiliary material layer 163. The semiconductor layer may include polysilicon, single crystal silicon, an oxide semiconductor, etc.

[0114] The first gate insulating film 170 is disposed on the semiconductor layer. The first gate insulating film 170 may be disposed to completely cover the buffer layer 115 (including the semiconductor layer). The first gate insulating film 170 may serve as the gate insulating film of the first transistor 120 and the second transistor 140.

[0115] The first conductive layer is disposed on the first gate insulating film 170. On the first gate insulating film 170, the first conductive layer may include the first gate electrode 121 disposed on the first active material layer 126 of the first transistor 120, the second gate electrode 141 disposed on the second active material layer 146 of the second transistor 140, and the power line 161 disposed on the auxiliary material layer 163.

[0116] The interlayer insulating film 190 is disposed on the first conductive layer. The interlayer insulating film 190 may perform the function of an interlayer insulating film. In addition, the interlayer insulating film 190 may include an organic insulating material and may perform a surface planarization function.

[0117] The second conductive layer is disposed on the interlayer insulating film 190. The second conductive layer includes the first drain electrode 123 and the first source electrode 124 of the first transistor 120, the second drain electrode 143 and the second source electrode 144 of the second transistor 140, and the power electrode 162 disposed on the power line 161.

[0118] The first drain electrode 123 and the first source electrode 124 can be electrically connected to the first active material layer 126 through contact holes penetrating through the interlayer insulating film 190 and the first gate insulating film 170. The second drain electrode 143 and the second source electrode 144 can be electrically connected to the second active material layer 146 through contact holes penetrating through the interlayer insulating film 190 and the first gate insulating film 170. In addition, the first drain electrode 123 and the second drain electrode 143 can be electrically connected to the first bridging pattern 181 and the second bridging pattern 182 respectively through other contact holes.

[0119] The via hole layer 200 is disposed on the second conductive layer. The via hole layer 200 may include an organic insulating material to perform a surface planarization function.

[0120] A plurality of dams 410, 420, and 430 are disposed on the via hole layer 200. The plurality of dams 410, 420, and 430 may be disposed to be spaced apart from each other in each sub-pixel PXn. The plurality of dams 410, 420, and 430 may include a first dam 410 and a second dam 420 disposed adjacent to the central portion of the sub-pixel PXn and a third dam 430 at the boundary between the sub-pixels PXn.

[0121] The third dam 430 may be a dam that distinguishes the boundaries of each sub-pixel PXn. When manufacturing the display device 10, when an organic material or a solvent is sprayed using an inkjet printing method, the third dam 430 may perform a function of preventing the organic material or the solvent from crossing the boundaries of the sub-pixels PXn. Alternatively, when the display device 10 further includes another component, the component may be disposed on the third dam 430, and the third dam 430 may also perform a function of supporting the component. However, the present disclosure is not limited thereto.

[0122] The first dam 410 and the second dam 420 are disposed to be spaced apart from each other and face each other. The first electrode 210 may be disposed on the first dam 410, and the second electrode 220 may be disposed on the second dam 420. Refer to Figure 1 and Figure 3 it can be understood that the first electrode branch portion 210B is disposed on the first dam 410, and the second dam 420 is disposed on the second dam 420. That is, based on Figure 1 the first dam 410 and the second dam 420 may extend in the second direction D2 and may be disposed to be spaced apart from each other in the first direction D1.

[0123] Figure 3 One first dam 410, one second dam 420, and one third dam 430 are shown, but the present disclosure is not limited thereto. When as Figure 1When two first electrode branch portions 210B are provided in a sub-pixel PXn as shown, two first banks 410 and one second bank 420 may be provided, and each sub-pixel PXn may include more banks 410, 420, and 430.

[0124] As described above, the first bank 410, the second bank 420, and the third bank 430 may be formed by substantially the same process. Thus, the banks 410, 420, and 430 may form a grid pattern. The plurality of banks 410, 420, and 430 may include polyimide (PI).

[0125] The plurality of banks 410, 420, and 430 may have a structure in which at least a part of them protrudes from the via hole layer 200. The banks 410, 420, and 430 may protrude upward from the flat surface on which the light-emitting element 300 is provided, and at least a part of such a protruding portion may have an inclination. The shape of the banks 410, 420, and 430 having the protruding structure is not particularly limited. As shown in the drawings, the first bank 410 and the second bank 420 may protrude to the same height, and the third bank 430 may have a shape that protrudes to a higher position.

[0126] The reflective layers 211 and 221 may be provided on the first bank 410 and the second bank 420, and the electrode layers 212 and 222 may be provided on the reflective layers 211 and 221. The reflective layers 211 and 221 and the electrode layers 212 and 222 may constitute the electrodes 210 and 220.

[0127] The reflective layers 211 and 221 include a first reflective layer 211 and a second reflective layer 221. The first reflective layer 211 covers the first bank 410, and a part of it is electrically connected to the first drain electrode 124 through a contact hole passing through the via hole layer 200. The second reflective layer 221 covers the second bank 420, and a part of it is electrically connected to the power electrode 162 through a contact hole passing through the via hole layer 200. The contact hole through which the first reflective layer 211 is connected may be Figure 1 the first electrode contact hole CNTD, and the contact hole through which the second reflective layer 221 is connected may be Figure 1 the second electrode contact hole CNTS.

[0128] The reflective layers 211 and 221 may include a material having a high reflectivity to reflect the emitted light EL emitted from the light-emitting element 300. As an example, the reflective layers 211 and 221 may include materials such as silver (Ag), copper (Cu), indium tin oxide (ITO), indium zinc oxide (IZO), or indium tin zinc oxide (ITZO), but the present disclosure is not limited thereto.

[0129] The electrode layers 212 and 222 include a first electrode layer 212 and a second electrode layer 222. The electrode layers 212 and 222 may have substantially the same pattern as the reflective layers 211 and 221. The first reflective layer 211 and the first electrode layer 212 are disposed spaced apart from the second reflective layer 221 and the second electrode layer 222.

[0130] The electrode layers 212 and 222 may include a transparent conductive material such that the emitted light EL emitted from the light-emitting element 300 may be incident on the reflective layers 211 and 221. As an example, the electrode layers 212 and 222 may include materials such as ITO, IZO, or ITZO, but the present disclosure is not limited thereto.

[0131] In some embodiments, the reflective layers 211 and 221 and the electrode layers 212 and 222 may have a structure in which at least one transparent conductive layer made of ITO, IZO, or ITZO and at least one metal layer made of silver or copper are stacked. As an example, the reflective layers 211 and 221 and the electrode layers 212 and 222 may have a stacked structure of ITO / Ag / ITO / IZO.

[0132] The first reflective layer 211 and the first electrode layer 212 may constitute a first electrode 210, and the second reflective layer 221 and the second electrode layer 222 may constitute a second electrode 220. The first electrode 210 and the second electrode 220 transmit the electrical signals transmitted from the first transistor 120 and the power electrode 162 to the light-emitting element 300 through the first electrode layer 212 and the second electrode layer 222, respectively.

[0133] Meanwhile, in some embodiments, the first electrode 210 and the second electrode 220 may be formed as one layer. That is, the reflective layer 211 and the electrode layer 212 are formed as a single layer, and the reflective layer 221 and the electrode layer 222 are formed as a single layer to transmit an electrical signal to the light-emitting element 300 and simultaneously reflect the emitted light EL. In an embodiment, the first electrode 210 and the second electrode 220 may include a conductive material having a high reflectivity. As an example, the first electrode 210 and the second electrode 220 may be made of an alloy including aluminum (Al), nickel (Ni), lanthanum (La), etc. However, the present disclosure is not limited thereto.

[0134] The first insulating layer 510 is disposed on the first electrode 210 and the second electrode 220 to partially cover the first electrode 210 and the second electrode 220. The first insulating layer 510 may be disposed to cover most of the upper surfaces of the first electrode 210 and the second electrode 220, and may expose portions of the first electrode 210 and the second electrode 220. The first insulating layer 510 may be disposed to cover the separation space between the first electrode 210 and the second electrode 220, and also partially cover the region opposite to the space between the first electrode 210 and the second electrode 220.

[0135] The first insulating layer 510 is provided such that the relatively flat upper surfaces of the first electrode 210 and the second electrode 220 are exposed, and may be provided such that the electrodes 210 and 220 overlap with the inclined side surfaces of the first bank 410 and the second bank 420. The first insulating layer 510 has a flat upper surface which is formed such that the light-emitting element 300 is disposed thereon, and which extends in one direction toward each of the first electrode 210 and the second electrode 220. Such an extending portion of the first insulating layer 510 terminates at the inclined side surfaces of the first electrode 210 and the second electrode 220. Accordingly, the contact electrodes 260 to be described below can contact the exposed first electrode 210 and second electrode 220, and can stably contact the light-emitting element 300 on the flat upper surface of the first insulating layer 510.

[0136] The first insulating layer 510 can protect the first electrode 210 and the second electrode 220, and at the same time insulate the first electrode 210 and the second electrode 220 from each other. In addition, the first insulating layer 510 can also prevent the light-emitting element 300 disposed on the first insulating layer 510 from being damaged due to direct contact with other members.

[0137] The light-emitting element 300 or the light-blocking portion 810 of the light-blocking layer 800 may be disposed on the first insulating layer 510.

[0138] One or more light-emitting elements 300 may be disposed on the first insulating layer 510 between the first electrode 210 and the second electrode 220. In the light-emitting element 300, a plurality of layers may be disposed in the horizontal direction on the via layer 200. As will be described below, the light-emitting element 300 may include a first-conductive-type semiconductor 310, an active layer 330, a second-conductive-type semiconductor 320, and an electrode material layer 370. In the light-emitting element 300 of the display device 10 according to one embodiment, a plurality of layers may be sequentially disposed in the horizontal direction on the via layer 200. However, the present disclosure is not limited thereto. The order in which the plurality of layers of the light-emitting element 300 are disposed may be reversed, and in some cases, when the light-emitting element 300 has another structure, the plurality of layers may be disposed in a direction perpendicular to the via layer 200. This will be described below with reference to other drawings.

[0139] Meanwhile, the light-blocking portion 810 of the light-blocking layer 800 is disposed on the first insulating layer 510 located between the first electrode 210 and the third bank 430. As described above, the light-blocking layer 800 may include the light-blocking portion 810 and the opening pattern 820, and Figure 3In the [description], the region where the light-blocking portion 810 is not provided can be understood as the region where the opening pattern 820 is located. This region can be the region where the amount of light required to emit each sub-pixel PXn is needed, and thus can be the emission region LA of the sub-pixel PXn.

[0140] Like the first insulating layer 510, the light-blocking portion 810 can be disposed to overlap with the inclined side surface of the first electrode 210 and can extend in one direction to also be disposed on the inclined side surface of the third bank portion 430. The incident light IL incident from the outside can not be reflected by the first electrode 210 overlapping with the light-blocking portion 810 and can be absorbed by the light-blocking portion 810. However, the incident light IL can be reflected on the region where the light-blocking portion 810 is not provided and the first electrode 210 or the second electrode 220 is exposed.

[0141] Meanwhile, the region where the light-blocking portion 810 is provided is not limited thereto. The light-blocking portion 810 in the region where the opening pattern 820 is not formed can be disposed to cover the first electrode 210, the second electrode 220, and the first insulating layer 510. In addition, in some cases, the light-blocking portion 810 can be disposed on the contact electrode 260 and disposed to partially cover the first electrode 210, the second electrode 220, and the first insulating layer 510.

[0142] Referring to Figure 4 , the light-blocking layer 800 of the display device 10 according to one embodiment can include a light-blocking portion 810 that partially covers the contact electrode 260. As Figure 4 shown, the light-blocking portion 810 of the light-blocking layer 800 can be disposed on the first insulating layer 510 and can be disposed to partially cover the upper surface of the contact electrode 260. When manufacturing the display device 10, after forming the contact electrode 260, the light-blocking layer 800 is formed such that the light-blocking portion 810 can be disposed on the upper surface of the contact electrode 260. However, the present disclosure is not limited thereto.

[0143] Meanwhile, referring to Figure 5 , the first insulating layer 510 can be disposed to cover the entire regions of the first electrode 210 and the second electrode 220, and the light-blocking portion 810 can be disposed to completely cover the first insulating layer 510. That is, the light-blocking portion 810 can also be disposed in the region between the first electrode 210 and the third bank portion 430 and the region between the first electrode 210 and the second electrode 220. When the amount of light emitted from the light-emitting element 300 located in the emission region LA satisfies the amount of light required to be emitted from the sub-pixel PXn, the light-blocking portion 810 for minimizing the reflection of external light can be disposed in the non-emission region NLA other than the emission region LA.

[0144] Figure 3is a cross-sectional view of an emission region LA in which an opening pattern 820 is positioned, and Figure 5 is a cross-sectional view of a non-emission region NLA in which a light-blocking part 810 is positioned. As Figure 3 and Figure 5 shown, when the amount of light emitted from the light-emitting element 300 disposed in the emission region LA satisfies the amount of light required for each sub-pixel PXn, the light-emitting element 300 may not be disposed in the non-emission region NLA which is an area other than the emission region LA. That is, the light-blocking part 810 may be entirely disposed on the electrodes 210 and 220 in the non-emission region NLA where the light-emitting element 300 is not disposed.

[0145] However, the present disclosure is not limited thereto. In some cases, the light-emitting element 300 may be disposed in the non-emission region NLA, and in such a case, the light-blocking part 810 may absorb the incident light IL and at the same time absorb a part of the emitted light EL. This will be described in detail with reference to other embodiments.

[0146] Meanwhile, as Figure 3 shown, the first insulating layer 510 and the light-blocking part 810 may have a patterned shape such that the upper surface of the first electrode 210 is exposed. When manufacturing the display device 10, as Figure 5 shown, such a structure may be formed by sequentially forming the first insulating layer 510 and the light-blocking part 810 in one process and then patterning the first insulating layer 510 and the light-blocking part 810 together. However, the present disclosure is not limited thereto, and the light-blocking part 810 may be formed after the first electrode 210 is partially exposed by patterning the first insulating layer 510.

[0147] Figure 6 is a schematic diagram showing a cross-section of a non-emission region of a display device according to another embodiment.

[0148] Referring to Figure 6 , the shape of the first insulating layer 510 is the same as that of the first insulating layer 510 of Figure 3 , rather than the same as that of the first insulating layer 510 of Figure 5 . On the other hand, the light-blocking part 810 may be in contact with the upper surface of the first electrode 210 exposed by patterning the first insulating layer 510. As described above, such a structure may be formed by disposing the light-blocking part 810 after patterning the first insulating layer 510. Even in the case of Figure 6 , the light-blocking part 810 may be disposed to cover the electrodes 210 and 220 in the non-emission region NLA, so that the incident light IL incident from the outside can be absorbed.

[0149] Referring back to Figure 3, the second insulating layer 520 may be disposed on the light-emitting element 300. The second insulating layer 520 may perform the functions of protecting and fixing the light-emitting element 300 simultaneously. The second insulating layer 520 may be disposed to surround the outer surface of the light-emitting element 300. That is, a part of the material of the second insulating layer 520 may be disposed between the lower surface of the light-emitting element 300 and the first insulating layer 510. The second insulating layer 520 may extend in the second direction D2 between the first electrode branch portion 210B and the second electrode branch portion 220B to have an island shape or a linear shape in a plan view.

[0150] The second insulating layer 520 is disposed to expose two side surfaces of the light-emitting element 300. Accordingly, the contact electrode 260 may be in smooth contact with the side surfaces of two ends of the light-emitting element 300. However, the present disclosure is not limited thereto, and the second insulating layer 520 may be aligned with both ends of the light-emitting element 300.

[0151] The contact electrode 260 is disposed on each of the electrodes 210 and 220 and the second insulating layer 520. The contact electrode 260 includes a first contact electrode 261 disposed on the first electrode 210 and a second contact electrode 262 disposed on the second electrode 220. The first contact electrode 261 and the second contact electrode 262 are disposed to be spaced apart from each other on the second insulating layer 520. Accordingly, the second insulating layer 520 may insulate the first contact electrode 261 and the second contact electrode 262 from each other.

[0152] The first contact electrode 261 may be in contact with the first electrode 210, the first insulating layer 510, the light-emitting element 300, and the second insulating layer 520 exposed by patterning the first insulating layer 510. The second contact electrode 262 may be in contact with the second electrode 220, the first insulating layer 510, the light-emitting element 300, and the second insulating layer 520 exposed by patterning the first insulating layer 510. The first contact electrode 261 and the second contact electrode 262 may be in contact with the side surfaces of two ends (e.g., the first conductive type semiconductor 310 and the second conductive type semiconductor 320 or the electrode material layer 370) of the light-emitting element 300, respectively. As described above, the first insulating layer 510 may be formed to have a flat upper surface so that the contact electrode 260 may be in smooth contact with the side surface of the light-emitting element 300.

[0153] Meanwhile, the first contact electrode 261 may be in partial contact with the light-blocking portion 810 disposed between the first electrode 210 and the third bank portion 430. The first contact electrode 261 may be disposed to be spaced apart from the third bank portion 430 and thus may partially overlap with the light-blocking portion 810.

[0154] The contact electrode 260 may include a conductive material. For example, the contact electrode 260 may include ITO, IZO, ITZO, aluminum (Al), etc. However, the present disclosure is not limited thereto.

[0155] The passivation layer 550 may be formed on the second insulating layer 520 and the contact electrode 260, and may perform a function of protecting components provided on the via layer 200 from the external environment.

[0156] Each of the first insulating layer 510, the second insulating layer 520, and the passivation layer 550 may include an inorganic insulating material or an organic insulating material. In an embodiment, the first insulating layer 510 and the passivation layer 550 may include materials such as silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum oxide (Al 2 O 3 ), or aluminum nitride (AlN). The second insulating layer 520 may include a photoresist or the like as an organic insulating material. However, the present disclosure is not limited thereto.

[0157] Figure 7 is Figure 1 an enlarged view of the emission region of.

[0158] According to an embodiment, the light blocking layer 800 of the display device 10 may include an opening pattern 820, and the opening pattern 820 may have an area in which the light emitting element 300 corresponding to the amount of light required for each sub-pixel PXn may be provided.

[0159] Referring to Figure 7 , the opening pattern 820 may have a predetermined width w and may have a length l extending in the second direction D2. As shown in the drawings, in the opening pattern 820 according to an embodiment, the width w may be less than the length l, the width w is the interval measured in the first direction D1, and the length l is the distance measured in the second direction D2. However, the present disclosure is not limited thereto.

[0160] As described above, the light emitting element 300 is disposed in the region where the electrodes 210 and 220 overlap with the opening pattern 820, and this region may be defined as the emission region LA. In the display device 10, the light blocking portion 810 is disposed in the non-emission region NLA other than the emission region LA, thereby reducing the reflection of external light caused in the non-emission region NLA.

[0161] Meanwhile, the area of the emission region LA or the opening pattern 820 may vary according to the amount of light required for each sub-pixel PXn. That is, the area of the opening pattern 820 may be determined according to the number of light-emitting elements 300 required to satisfy the amount of light required for one sub-pixel PXn.

[0162] For example, in order to satisfy the amount of light required for the sub-pixel PXn, when n light-emitting elements 300 are required (e.g., 8 light-emitting elements 300 as shown in the accompanying drawings), the opening pattern 820 may have an area in which 8 light-emitting elements 300 can be disposed. Here, the minimum area of the opening pattern 820 may be determined according to the array of the light-emitting elements 300 and the diameter and length of the light-emitting elements 300. When eight light-emitting elements 300 are arranged in a 2×4 matrix array, the width w of the opening pattern 820 is at least twice the length of the light-emitting element 300, and the length l of the opening pattern 820 may be at least four times the diameter of the light-emitting element 300.

[0163] In an embodiment, when determining the amount of light required for each sub-pixel PXn of the display device 10, the number of light-emitting elements 300 required for each sub-pixel PXn may be calculated by (amount of light) / (current efficiency of the light-emitting element × current of each sub-pixel). Therefore, the minimum area of the emission region LA or the opening pattern 820 may be determined according to the calculated number of light-emitting elements 300. However, the present disclosure is not limited thereto, and in some cases, the opening pattern 820 may have a wider or narrower area.

[0164] Meanwhile, the light-emitting element 300 may include a semiconductor crystal doped with impurities of any conductive type (e.g., p-type or n-type). The semiconductor crystal may receive an electrical signal applied from an external power source and emit light having a specific wavelength in response to the received electrical signal.

[0165] The light-emitting element 300 may be a light-emitting diode, and specifically, the light-emitting element 300 may be an inorganic light-emitting diode having a size in the micron unit or the nano unit and made of an inorganic material. When the light-emitting element 300 is an inorganic light-emitting diode and an electric field is formed between two facing electrodes in a specific direction, the inorganic light-emitting diode may be aligned between the two electrodes having opposite polarities. Therefore, by forming an electric field, the light-emitting element 300 having a micro size may be aligned on the electrodes of the display device 10. The light-emitting element 300 may receive a predetermined electrical signal from the electrodes to emit light having a specific wavelength.

[0166] Figure 8 is a schematic diagram of a light-emitting element according to an embodiment.

[0167] Referring to Figure 8, according to one embodiment, the light-emitting element 300 may include a plurality of semiconductor layers of different conductivity types 310 and 320, an active layer 330, an electrode material layer 370, and an insulating film 380. The plurality of semiconductor layers of different conductivity types 310 and 320 may transmit an electrical signal transmitted to the light-emitting element 300 to the active layer 330, and the active layer 330 may emit light having a specific wavelength.

[0168] Specifically, the light-emitting element 300 may include a first conductivity type semiconductor 310, a second conductivity type semiconductor 320, an active layer 330 disposed between the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320, an electrode material layer 370 disposed on the second conductivity type semiconductor 320, and an insulating film 380 disposed to surround the outer surfaces of the first conductivity type semiconductor 310, the second conductivity type semiconductor 320, the active layer 330, and the electrode material layer 370. In Figure 8 FIG., the light-emitting element 300 is shown as having a structure in which the first conductivity type semiconductor 310, the active layer 330, the second conductivity type semiconductor 320, and the electrode material layer 370 are sequentially formed in its longitudinal direction, but the present disclosure is not limited thereto. The electrode material layer 370 may be omitted, and in some embodiments, the electrode material layer 370 may also be disposed on at least one of the two side surfaces of the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320. Even when the light-emitting element 300 further includes another structure, the same description may be applied to the light-emitting element 300 described below.

[0169] The first conductivity type semiconductor 310 may be an n-type semiconductor layer. As an example, when the light-emitting element 300 emits light having a blue wavelength, the first conductivity type semiconductor 310 may be made of a semiconductor material having a chemical formula of In x Al y Ga 1-x-y N (0≤x≤1, 0≤y≤1, and 0≤x + y≤1). For example, the first conductivity type semiconductor 310 may be made of at least one selected from n-type doped InAlGaN, GaN, AlGaN, InGaN, AlN, and InN. The first conductivity type semiconductor 310 may be doped with a first conductivity type dopant. As an example, the first conductivity type dopant may be silicon (Si), germanium (Ge), tin (Sn), etc. The first conductivity type semiconductor 310 may have a length in the range of 1.5 μm to 5 μm, but the present disclosure is not limited thereto.

[0170] The second conductivity type semiconductor 320 may be a p-type semiconductor layer. As an example, when the light-emitting element 300 emits light having a blue wavelength, the second conductivity type semiconductor 320 may be made of a semiconductor material having a chemical formula of In x Al y Ga 1-x-yIt is made of a semiconductor material with a molecular formula of N (0 ≤ x ≤ 1, 0 ≤ y ≤ 1, and 0 ≤ x + y ≤ 1). For example, the second-conductivity-type semiconductor 320 can be made of at least one selected from p-type doped InAlGaN, GaN, AlGaN, InGaN, AlN, and InN. The second-conductivity-type semiconductor 320 can be doped with a second-conductivity-type dopant. As an example, the second-conductivity-type dopant can be magnesium (Mg), zinc (Zn), calcium (Ca), selenium (Se), barium (Ba), etc. The second-conductivity-type semiconductor 320 can have a length in the range of 0.08 μm to 0.25 μm, but the present disclosure is not limited thereto.

[0171] Meanwhile, in the drawings, each of the first-conductivity-type semiconductor 310 and the second-conductivity-type semiconductor 320 is shown as being composed of one layer, but the present disclosure is not limited thereto. In some cases, depending on the material of the active layer 330 to be described below, the first-conductivity-type semiconductor 310 and the second-conductivity-type semiconductor 320 can include more layers.

[0172] The active layer 330 can be disposed between the first-conductivity-type semiconductor 310 and the second-conductivity-type semiconductor 320 and can include a material having a single quantum well structure or a multi-quantum well structure. When the active layer 330 includes a material having a multi-quantum well structure, the active layer 330 can have a structure in which a plurality of quantum layers and a plurality of well layers are alternately stacked. According to the electrical signals applied through the first-conductivity-type semiconductor 310 and the second-conductivity-type semiconductor 320, the active layer 330 can emit light due to the combination of electron-hole pairs. For example, when the active layer 330 emits light having a blue wavelength, the active layer 330 can include a material such as AlGaN or AlInGaN. Specifically, when the active layer 330 has a structure in which quantum layers and well layers are alternately stacked in a multi-quantum well structure, the quantum layers can include a material such as AlGaN or AlInGaN, and the well layers can include a material such as GaN or AlGaN.

[0173] However, the present disclosure is not limited thereto, and the active layer 330 can have a structure in which a semiconductor material having a high bandgap energy and a semiconductor material having a low bandgap energy are alternately stacked, or can include other group III or V semiconductor materials depending on the wavelength of the emitted light. Therefore, the light emitted by the active layer 330 is not limited to light having a blue wavelength, and in some cases, the active layer 330 can emit light having a red wavelength or a green wavelength. The active layer 330 can have a length in the range of 0.05 μm to 0.25 μm, but the present disclosure is not limited thereto.

[0174] Meanwhile, the light emitted from the active layer 330 can be emitted not only to the outer surface of the light-emitting element 300 in its longitudinal direction but also to the two side surfaces of the light-emitting element 300. The directivity of the light emitted from the active layer 330 is not limited to one direction.

[0175] The electrode material layer 370 may be an ohmic contact electrode. However, the present disclosure is not limited thereto, and the electrode material layer 370 may be a Schottky contact electrode. The electrode material layer 370 may include a conductive metal. For example, the electrode material layer 370 may include at least one selected from aluminum (Al), titanium (Ti), indium (In), gold (Au), silver (Ag), ITO, IZO, and ITZO. The electrode material layer 370 may include the same material or different materials, but the present disclosure is not limited thereto.

[0176] The insulating film 380 may be formed to contact and surround the outer surfaces of the first-conductive-type semiconductor 310, the second-conductive-type semiconductor 320, the active layer 330, and the electrode material layer 370. The insulating film 380 may perform a function of protecting such components. As an example, the insulating film 380 may be formed to surround the side surfaces of the components and may be formed to expose the two end portions of the light-emitting element 300 in its longitudinal direction. However, the present disclosure is not limited thereto.

[0177] The insulating film 380 may include at least one selected from materials having an insulating property, for example, silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum nitride (AlN), and aluminum oxide (Al 2 O 3 ). Accordingly, a short circuit that may occur when the active layer 330 is in direct contact with an electrode (through which an electrical signal is transmitted to the light-emitting element 300) can be prevented. In addition, since the insulating film 380 protects the outer surface of the light-emitting element 300 including the active layer 330, a reduction in luminous efficiency can be prevented.

[0178] In the drawings, the insulating film 380 is shown as being formed to extend in the longitudinal direction of the light-emitting element 300 and covering from the first-conductive-type semiconductor 310 to the electrode material layer 370, but the present disclosure is not limited thereto. The insulating film 380 may cover only the first-conductive-type semiconductor 310, the active layer 330, and the second-conductive-type semiconductor 320, or may cover a part of the outer surface of the electrode material layer 370, thereby exposing a part of the outer surface of the electrode material layer 370.

[0179] The insulating film 380 may have a thickness in the range of 0.5 μm to 1.5 μm, but the present disclosure is not limited thereto.

[0180] In addition, in some embodiments, the outer surface of the insulating film 380 may be surface-treated. When manufacturing the display device 10, the light-emitting elements 300 may be aligned by being sprayed onto the electrodes in a state of being dispersed in a predetermined ink. Here, in order for the light-emitting elements 300 to remain dispersed in the ink without aggregating with other adjacent light-emitting elements 300, the surface of the insulating film 380 may be subjected to a hydrophobic or hydrophilic treatment.

[0181] The light-emitting element 300 may have a shape extending in one direction. The light-emitting element 300 may have a shape such as a nanorod, a nanowire, or a nanotube. In an embodiment, the light-emitting element 300 may have a cylindrical shape or a rod shape. However, the shape of the light-emitting element 300 is not limited thereto, and the light-emitting element 300 may have various shapes such as a regular hexahedron, a rectangular parallelepiped, and a hexagonal column.

[0182] Figure 9 is a schematic diagram of a light-emitting element according to another embodiment.

[0183] Referring to Figure 9 , the plurality of layers of the light-emitting element 300' may not be stacked in one direction, and each layer may be formed to surround the outer surface of another layer. Except that the shape of each layer of the light-emitting element 300' is partially different from the shape of each layer of the light-emitting element 300, Figure 9 the light-emitting element 300' of Figure 8 is the same as the light-emitting element 300 of

[0184] According to one embodiment, the first-conductive-type semiconductor 310' may extend in one direction, and both ends thereof may be formed to be inclined toward its center. Figure 9 The first-conductive-type semiconductor 310' of

[0185] The active layer 330' is disposed to surround the outer surface of the main body portion of the first-conductive-type semiconductor 310'. The active layer 330' may have an annular shape extending in one direction. The active layer 330' is not formed on the upper end portion and the lower end portion of the first-conductive-type semiconductor 310'. That is, the active layer 330' may be in contact only with the parallel side surfaces of the first-conductive-type semiconductor 310'.

[0186] The second-conductivity-type semiconductor 320' is disposed to surround the outer surface of the active layer 330' and the upper end portion of the first-conductivity-type semiconductor 310'. The second-conductivity-type semiconductor 320' may include a main body portion having an annular shape extending in one direction and an upper end portion formed to have an inclined side surface. That is, the second-conductivity-type semiconductor 320' may be in direct contact with the parallel side surface of the active layer 330' and the inclined upper end portion of the first-conductivity-type semiconductor 310'. However, the second-conductivity-type semiconductor 320' is not formed on the lower end portion of the first-conductivity-type semiconductor 310'.

[0187] The electrode material layer 370' is disposed to surround the outer surface of the second-conductivity-type semiconductor 320'. That is, the electrode material layer 370' may have substantially the same shape as the second-conductivity-type semiconductor 320'. That is, the electrode material layer 370' may be in contact with the entire outer surface of the second-conductivity-type semiconductor 320'.

[0188] The insulating film 380' may be disposed to surround the outer surfaces of the electrode material layer 370' and the first-conductivity-type semiconductor 310'. The insulating film 380' may be in direct contact with the lower end portion of the first-conductivity-type semiconductor 310' and the exposed lower end portions of the active layer 330' and the second-conductivity-type semiconductor 320' (including the electrode material layer 370').

[0189] Meanwhile, Figure 9 the light-emitting element 300' may be disposed such that the direction in which the first-conductivity-type semiconductor 310' extends is parallel to the horizontal direction of the via hole layer 200 of the display device 10. That is, the light-emitting element 300' may have a structure in which a plurality of layers are stacked in a direction perpendicular to the via hole layer 200 in a cross section.

[0190] Figure 10 is a schematic cross-sectional view showing a light-emitting element disposed between electrodes according to another embodiment.

[0191] Referring to Figure 10 According to one embodiment, Figure 9The light-emitting element 300' can be disposed in the display device 10. The light-emitting element 300' is arranged such that the direction in which the main body portion of the first-conductive-type semiconductor 310' extends is parallel to the via hole layer 200. Accordingly, the light-emitting element 300' can be arranged to have a structure in its cross section in which the insulating film 380', the electrode material layer 370', the second-conductive-type semiconductor 320', the active layer 330', and the first-conductive-type semiconductor 310' are stacked perpendicular to the via hole layer 200 in sequence. In addition, each layer of the light-emitting element 300' can be arranged to surround the outer surface of another layer and can have a symmetric structure based on the center of its cross section. That is, the light-emitting element 300' can have a structure in which the active layer 330', the second-conductive-type semiconductor 320', the electrode material layer 370', and the insulating film 380' can be stacked in sequence based on the first-conductive-type semiconductor 310'.

[0192] Meanwhile, the insulating film 380' in the regions of the two end portions of the light-emitting element 300' that are in contact with the contact electrode 260 can be partially patterned and removed. When the second insulating layer 520 is patterned after the light-emitting element 300' is aligned, the insulating film 380' of the light-emitting element 300' can be partially removed such that the electrode material layer 370' and the first-conductive-type semiconductor 310' can be partially exposed. Such an exposed region of the light-emitting element 300' can be in direct contact with the contact electrode 260.

[0193] In addition, Figure 9 the light-emitting element 300' includes upper and lower end portions whose side surfaces are inclined with respect to the main body portion. In the light-emitting element 300' disposed on the first insulating layer 510, the side surface of the main body portion can be in contact with the first insulating layer 510, and the inclined side surfaces of the upper and lower portions can be spaced apart from the first insulating layer 510. Referring to Figure 10 , in the display device 10 according to one embodiment, a second insulating layer 520 can be further disposed in a separation region between the light-emitting element 300' and the first insulating layer 510. As described above, since the second insulating layer 520 includes an organic material, when the second insulating layer 520 can be formed, the second insulating layer 520 can also be interposed between the light-emitting element 300' and the first insulating layer 510. Accordingly, even when the light-emitting element 300' has inclined side surfaces, the light-emitting element 300' can be fixed to the first insulating layer 510. However, the present disclosure is not limited thereto.

[0194] Meanwhile, the length h of the light-emitting element 300 may be in the range of 1 μm to 10 μm or in the range of 2 μm to 5 μm, and may preferably be about 4 μm. In addition, the light-emitting element 300 may have a diameter in the range of 300 nm to 700 nm, and the plurality of light-emitting elements 300 included in the display device 10 may have different diameters depending on the composition of the active layer 330. Preferably, the light-emitting element 300 may have a diameter of about 500 nm.

[0195] Hereinafter, a method of manufacturing the display device 10 according to an embodiment will be described with reference to Figures 11 to 18 A part of the method of manufacturing the display device 10 will be described with reference to a cross-sectional view hereinafter.

[0196] Figures 11 to 18 is a schematic cross-sectional view showing a method of manufacturing a display device according to an embodiment. Hereinafter, the process sequence of the method of manufacturing the display device 10 will be described in detail, and the structure, material, and function of the components formed in the manufacturing process of the display device 10 will be omitted.

[0197] First, with reference to Figure 11 , a first substrate layer 1000 is provided, and the first substrate layer 1000 includes a first bank 410 and a second bank 420 provided on the via layer 200, a first electrode 210 provided on the first bank 410, a second electrode 220 provided on the second bank 420, and a first insulating material layer 511 covering the first electrode 210 and the second electrode 220.

[0198] The shapes and structures of the first bank 410, the second bank 420, the first electrode 210, and the second electrode 220 are the same as those described above with reference to Figure 3 . However, different from that shown in Figure 3 , the first insulating material layer 511 may be provided on the via layer 200 to completely cover the via layer 200 (including such components). The first insulating material layer 511 may be patterned in the operations to be described below to form Figure 3 the first insulating layer 510. Meanwhile, Figure 11 the first insulating material layer 511 of Figure 5 may have the same shape as the first insulating layer 510 of Figure 11 . That is, Figure 3 a partial region of the first insulating material layer 511 of Figure 5 may be patterned to form

[0199] In addition, although not shown in the drawings, a third embankment portion 430 may also be provided outside the first embankment portion 410 (e.g., on the left side in the drawings). As described above, since a plurality of embankment portions 410, 420, and 430 can be formed simultaneously in one process, the third embankment portion 430 not shown in the drawings may also be included in the first substrate layer. At the same time, the third embankment portion 430 may be formed to be higher than the first embankment portion 410 and the second embankment portion 420. According to one embodiment, the operation of forming the embankment portions 410, 420, 430 may be performed through a slit mask, a halftone mask, etc. However, the present disclosure is not limited thereto.

[0200] Next, referring to Figure 12 , a light-blocking material layer 801 is formed on the first insulating material layer 511 of the first substrate layer. The light-blocking material layer 801 may be provided to completely cover the first insulating material layer 511. That is, the light-blocking material layer 801 may overlap with the first electrode 210 and the second electrode 220. The light-blocking material layer 801 may be patterned in the operations to be described below to form a light-blocking layer 800 including a light-blocking portion 810 and an opening pattern 820, but the present disclosure is not limited thereto. The light-blocking layer 800 may be formed on the first insulating material layer 511 in a state including the opening pattern 820.

[0201] Next, referring to Figure 13 , at least a partial region of the light-blocking material layer 801 is patterned to form the opening pattern 820, thereby forming the light-blocking layer 800.

[0202] The light-blocking material layer 801 may be partially patterned and removed to form the opening pattern 820, and the remaining region of the light-blocking material layer 801 that is not patterned may form the light-blocking portion 810. That is, the region of the light-blocking material layer 801 that is patterned to form the opening pattern 820 may have the same shape as the Figure 3 light-blocking layer 800, and the region of the light-blocking material portion 801 that is not patterned to form the light-blocking portion 810 may have the same shape as the Figure 5 light-blocking layer 800.

[0203] Next, referring to Figure 14 and Figure 15 , the light-emitting element 300 is aligned in the region of the opening pattern 820 of the light-blocking layer 800 formed therein. As described above, the light-emitting element 300 may be aligned between the first electrode 210 and the second electrode 220 exposed by forming the opening pattern 820.

[0204] The method of aligning the light-emitting element 300 can be performed in such a way that a solution including the light-emitting element 300 is ejected onto the electrodes 210 and 220, and an alignment power is applied to each of the electrodes 210 and 220 to align the light-emitting element 300. The alignment power can form an electric field between the electrodes 210 and 220 to apply a dielectrophoretic force to the light-emitting element 300. The light-emitting element 300 can fall between the electrodes 210 and 220 in the solution by the dielectrophoretic force.

[0205] Meanwhile, an electric field caused by the alignment power can be formed only in the regions where the first electrode 210 and the second electrode 220 are exposed. That is, in the region of the opening pattern 820 where the light-blocking layer 800 is located, the first electrode 210 and the second electrode 220 are exposed, and thus an electric field is formed in this region. However, in the region where the light-blocking portion 810 is located, since the electrodes 210 and 220 are insulated from the light-blocking portion 810 by the first insulating material layer 511, the alignment power does not transfer to this region, and the electric field generated between the electrodes 210 and 220 can be blocked and may not be formed in this region. Therefore, the light-emitting element 300 can be selectively aligned in the region where the opening pattern 820 is formed. However, the present disclosure is not limited thereto.

[0206] Next, referring to Figure 16 , at least a partial region of the first insulating material layer 511 is patterned to form a second substrate layer, and the first electrode 210 and the second electrode 220 are partially exposed on the second substrate layer.

[0207] As shown in the drawings, the first insulating material layer 511 can be patterned to partially expose the upper surfaces of the first electrode 210 and the second electrode 220. Therefore, the first insulating layer 510 and the light-blocking layer 800 can be formed by the first insulating material layer 511 and the light-blocking material layer 801, respectively. Meanwhile, although not shown in the drawings, Figure 3 the first insulating layer 510 and the light-blocking layer 800 can be formed in the unpatterned region of the first insulating material layer 511 and in the region of the light-blocking material layer 801 where the light-blocking portion 810 is provided, respectively. Figure 5 the first insulating layer 510 and the light-blocking layer 800 can be formed in the unpatterned region of the first insulating material layer 511 and in the region of the light-blocking material layer 801 where the light-blocking portion 810 is provided, respectively.

[0208] Meanwhile, in Figure 13 and Figure 16 , each of the first insulating material layer 511 and the light-blocking material layer 801 is shown as being patterned, but the present disclosure is not limited thereto. In some cases, the first insulating material layer 511 and the light-blocking material layer 801 can be patterned simultaneously, or the first insulating material layer 511 can be patterned first.

[0209] Next, referring to Figure 17 and Figure 18, a second insulating layer 520 is formed on the second substrate layer, and a contact electrode 260 that contacts the exposed first electrode 210, second electrode 220, and light-emitting element 300 is formed. The description of the second insulating layer 520 and the contact electrode 260 is the same as above. A detailed description thereof will be omitted.

[0210] Next, although not shown in the figure, a passivation layer 550 may be formed to cover the plurality of components provided on the via layer 200, thereby manufacturing Figure 3 the display device 10. In the display device 10 manufactured by the above process, the light-blocking layer 800 may include an opening pattern 820 such that the light-emitting element 300 corresponding to the amount of light required for each sub-pixel PXn can be provided, and at the same time, the light-blocking layer 800 may include a light-blocking portion 810 such that the reflection of external light by the display device 10 can be reduced. Therefore, the visibility of the display device 10 can be improved.

[0211] Hereinafter, the display device 10 according to other embodiments will be described.

[0212] Figures 19 to 21 is a plan view of a display device according to other embodiments.

[0213] Different from Figure 1 shown therein, Figures 19 to 21 only one sub-pixel PXn is shown, but obviously, other pixels PX or sub-pixels PXn may have the same structure.

[0214] First, referring to Figure 19 , in the display device 10_1 according to the present embodiment, the contact electrode 260_1 may be provided only in the emission region LA_1 and may not be provided on the light-blocking portion 810_1 of the light-blocking layer 800_1. Different from Figure 1 the display device 10, in Figure 19 the display device 10_1, the width of the contact electrode 260_1 may be smaller than Figure 1 the width of the contact electrode 260 of

[0215] and may extend in the second direction D2. Therefore, the contact electrode 260_1 may be arranged in the opening pattern 820_1 so as not to overlap with the light-blocking portion 810_1. Other patterns spaced apart from each other on the second electrode branch portion 220B may be formed to form the second contact electrode 262_1 so as not to overlap with the light-blocking portion 810_1. Figure 20 and Figure 21, in display devices 10_2 and 10_3 according to the embodiments, one or more opening patterns 820 may be formed in each sub-pixel PXn. Accordingly, a plurality of emission regions LA may be defined in each sub-pixel PXn.

[0216] First, in Figure 20 display device 10_2, the light blocking layer 800_2 may include a first opening pattern 821_2 and a second opening pattern 822_2, the first opening pattern 821_2 and the second opening pattern 822_2 having a predetermined width w_2 and extending in one direction (e.g., the second direction D2). The first opening pattern 821_2 and the second opening pattern 822_2 may be arranged to be spaced apart from each other in the first direction D1. The first opening pattern 821_2 and the second opening pattern 822_2 may have a shape extending along their longitudinal direction, and their width w_2 may be less than their length l_2.

[0217] Each of the first opening pattern 821_2 and the second opening pattern 822_2 may be arranged to overlap with the first electrode branch portion 210B and the second electrode branch portion 220B. The first opening pattern 821_2 and the second opening pattern 822_2 may be spaced apart from each other on the second electrode branch portion 220B. Both side portions of each of the first opening pattern 821_2 and the second opening pattern 822_2 may overlap with the first electrode branch portion 210B and the second electrode branch portion 220B, and the light-emitting element 300 may be disposed at its central portion.

[0218] The light-emitting element 300 may be aligned on the electrode branch portions 210B and 220B exposed by the first opening pattern 821_2 and the second opening pattern 822_2, and the first emission region LA1_2 and the second emission region LA2_2 may be formed in such an exposed area.

[0219] Meanwhile, the light blocking portion 810 may be disposed in the separation region between the first opening pattern 821_2 and the second opening pattern 822_2. Different from the Figure 1 display device 10 shown, in Figure 20 display device 10_2, a light blocking portion bridging portion 810B_2 extending in the second direction D2 may be formed on the second electrode branch portion 220B. The light blocking portion bridging portion 810B_2 may separate the first opening pattern 821_2 and the second opening pattern 822_2, and may simultaneously connect the light blocking portions 810_2 located on the upper side and the lower side based on the first opening pattern 821_2 and the second opening pattern 822_2.

[0220] Although not shown in the drawings, in the display device 10_2, in cross-section, the light-blocking portion bridge 810B_2 may be partially formed on the second electrode 220 (or the second electrode branch portion 220B). That is, compared with the Figure 3 display device 10, even on the second electrode branch portion 220B, the light-blocking portion bridge 810B_2 extending in the second direction D2 may be formed, and thus, Figure 20 the display device 10_2 may absorb a larger amount of incident light IL. The areas of the emission regions LA1_2 and LA2_2 of the sub-pixels PXn of the display device 10_2 are smaller than the Figure 1 area of the emission region LA of the display device 10, but the number of light-emitting elements 300 corresponding to the amount of light required for each sub-pixel PXn may be the same as the Figure 1 number of light-emitting elements 300 of the display device 10. Therefore, the reflection of external light by the display device 10_2 can be reduced more effectively.

[0221] Next, referring to Figure 21 , in the display device 10_3, the light-blocking layer 800_3 may include a first opening pattern 821_3 and a second opening pattern 822_3 that extend in the first direction D1 and have a predetermined width w_3. The first opening pattern 821_3 and the second opening pattern 822_3 may be arranged to be spaced apart from each other in the second direction D2. In the Figure 20 display device 10_3, the width w_3 of the opening pattern 820_3 may be greater than its length l_3.

[0222] Unlike the Figure 20 display device 10_2 shown, in the Figure 21 display device 10_3, since the first opening pattern 821_3 and the second opening pattern 822_3 are spaced apart from each other in the second direction D2, the regions where the light-emitting elements 300 are formed may be separated on the same electrode 210 or 220, and each of the first contact electrode 261 and the second contact electrode 262 may form a separate pattern.

[0223] Specifically, based on the central portion of the sub-pixel PXn, in a plan view, the first opening pattern 821_3 may be arranged at the upper side, and the second opening pattern 822_3 may be arranged at the lower side. Therefore, the emission region LA_3 may also be divided into a first emission region LA1_3 located at the upper side and a second emission region LA2_3. In addition, a light-blocking portion bridge 810B_3 extending in the first direction D1 may be arranged in the separation region between the first opening pattern 821_3 and the second opening pattern 822_3.

[0224] The first light-emitting element 301_3 and the first contact electrode pattern portion 260A_3 are disposed on the electrodes 210 and 220 exposed by the first opening pattern 821_3. The second light-emitting element 302_3 and the second contact electrode pattern portion 260B_3 are disposed on the electrodes 210 and 220 exposed by the second opening pattern 822_3.

[0225] Unlike Figure 20 the display device 10_2 shown in Figure 21 in the display device 10_3 of Figure 21 the contact electrodes 260 extending in one direction are separated to form patterns spaced apart from each other, and some of the light-emitting elements 300 in the light-emitting element 300 can form a group, and thus can be arranged to be spaced apart from other groups. However, the number of the light-emitting elements 300 corresponding to the amount of light required for each sub-pixel PXn can be maintained. That is, even in

[0226] In addition to the above description Figure 21 the display device 10_3 of Figure 20 is the same as the display device 10_2 of

[0227] Figure 22 and thus redundant description thereof will be omitted. Figure 23 is Figure 19 a cross-sectional view taken along the line II-II' of

[0228] As described above, in the display device 10_4 according to the present embodiment, the light-blocking layer 800_4 can be directly disposed on each of the electrodes 210 and 220, and the light-blocking layer 800_4 can be formed in substantially the same pattern as the electrodes 210 and 220.

[0229] Referring to Figure 22 the light-blocking layer 800_4 can be disposed to substantially cover each of the electrodes 210 and 220, and can be formed in a pattern that is recessed inward from the side portions of each of the electrodes 210 and 220. That is, the width of the light-blocking layer 800_4 can be smaller than the widths of the electrodes 210 and 220. Figure 22The light-blocking layer 800_4 may be disposed on the electrodes 210 and 220 of each sub-pixel PXn without being divided into a light-blocking portion 810 and an opening pattern 820. However, the light-blocking layer 800_4 is patterned to expose partial regions of the electrodes 210 and 220, and partial regions of the electrodes 210 and 220 that do not overlap with the light-blocking layer 800_4 may be in contact with the contact electrode 260.

[0230] Referring to Figure 23 , different from the light-blocking layer 800 shown in Figure 3 , the light-blocking layer 800_4 may be disposed to be in direct contact with the upper surfaces of each of the electrodes 210 and 220. The first insulating layer 510_4 may be disposed in a separation region between the first electrode 210 and the second electrode 220, and may be disposed on the outer side surfaces of the light-blocking layer 800_4 and the electrodes 210 and 220. That is, compared with the display device 10 in Figure 3 , in the display device 10_4 in Figure 23 , the light-blocking layer 800_4 may be disposed between the first insulating layer 510_4 and the electrodes 210 and 220. Since the light-blocking layer 800_4 is formed to be recessed at the side surfaces of the electrodes 210 and 220, the light-blocking layer 800_4 may not be disposed on the inclined side surfaces of the electrodes 210 and 220 in a cross section. The contact electrode 260 may be in contact with the inclined side surfaces of the electrodes 210 and 220.

[0231] When manufacturing the display device 10_4, the shape of the light-blocking layer 800_4 may be formed by directly disposing a light-blocking material layer 801 on the electrodes 210 and 220 and patterning the light-blocking material layer 800_4 simultaneously with the electrodes 210 and 220. That is, the light-blocking layer 800_4 may be formed by forming a light-blocking material layer 801 on the electrodes 210 and 220 formed on the via hole layer 200 and patterning the light-blocking material layer 801 according to the shapes of the electrodes 210 and 220.

[0232] Meanwhile, in the drawings, the first insulating layer 510_4 is shown as being disposed on the outer side surfaces of the electrodes 210 and 220, but the present disclosure is not limited thereto. In some cases, the first insulating layer 510_4 may be disposed only on the upper surface of the light-blocking layer 800_4, and the two inclined side surfaces of the electrodes 210 and 220 may be completely exposed. In this case, the contact area of the contact electrode 260 with the electrodes 210 and 220 may be increased.

[0233] Therefore, in the display device 10_4 according to the present embodiment, the light blocking layer 800_4 is provided to cover most of the electrodes 210 and 220, and can effectively reduce the external light reflected by the display device 10_4. At the same time, the light blocking layer 800_4 of the display device 10_4 exposes the electrodes 210 and 220 provided on the side surfaces of the banks 410 and 420 in cross section, thereby reflecting the emitted light EL emitted from the light emitting element 300. In the display device 10_4 according to the present embodiment, the visibility of the emitted light EL can be improved.

[0234] Figure 24 is of a display device according to yet another embodiment Figure 22 planar view.

[0235] Refer to Figure 24 and, similar to Figure 19 the display device 10_1, in Figure 24 the display device 10_5, each contact electrode 260_5 may have a relatively narrow width and extend in the second direction D2. Other descriptions are the same as those described above and will thus be omitted.

[0236] Meanwhile, the display device 10 described with reference to the above drawings has a structure in which the light blocking layer 800 is provided between the electrodes 210 and 220 or between the first insulating layer 510 and the passivation layer 550. When manufacturing the display device 10, this structure can be formed by performing the process of forming the light blocking layer 800 before aligning the light emitting element 300, so as to align the light emitting element 300 according to the opening pattern 820.

[0237] However, the position where the light blocking layer 800 is provided is not limited thereto, and in some cases, the light blocking layer 800 may be formed after aligning the light emitting element 300. Therefore, according to other embodiments, the light blocking layer 800 may be provided on the passivation layer 550. Hereinafter, other embodiments of the display device 10 in which the light blocking layer 800 is provided on the passivation layer 550 will be described.

[0238] Figure 25 is a planar view of a display device according to still another embodiment. Figure 26 is a cross-sectional view taken along line IId-IId' of Figure 25 and Figure 27 is a cross-sectional view taken along line IIe-IIe' of Figure 25 the display device. Figure 26 is a cross-sectional view of the emission region LA_6 including the opening pattern 820_6 in which the light blocking layer 800_6 is provided, and Figure 27 is a cross-sectional view of the non-emission region NLA_6 where the light blocking portion 810_6 is located.

[0239] In addition to the light blocking layer 800 disposed on the passivation layer 550, Figures 25 to 27 The display device 10_6 and Figure 1 , Figure 3 and Figure 5 The display devices 10 of FIG. 1 and FIG. 2 are substantially the same. Hereinafter, the differences will be described in detail.

[0240] Reference Figure 25 According to the present embodiment, the display device 10_6 may include a light blocking layer 800_6 including a light blocking portion 810_6 covering each sub-pixel PXn and an opening pattern 820_6 exposing a portion of a region in which the light emitting element 300 is disposed. Figure 1 The display device 10 shown is different in that Figure 25 In the display device 10_6, the light emitting element 300 is also disposed in the region overlapping the light blocking portion 810_6. That is, the light emitting element 300 may also be disposed in the non-emission region NLA_6 of the sub-pixel PXn.

[0241] In addition, in addition to the opening pattern 820_6, the contact electrode 260_6 may also overlap with the light blocking portion 810_6. The contact electrode 260_6 may be disposed below the light blocking portion 810_6. Figure 1 Unlike the contact electrode 260 shown in FIG. 8 , the contact electrode 260_6 may not be in direct contact with the light blocking portion 810_6 and may overlap with the light blocking portion 810_6 with the passivation layer 550_6 interposed therebetween.

[0242] Reference Figure 26 and Figure 27 , the light blocking portion 810_6 of the light blocking layer 800_6 may be disposed on the passivation layer 550_6, and the opening pattern 820_6 may be formed in a region where the light blocking portion 810_6 is not disposed. As shown in the cross section of the display device 10_6, the first insulating layer 510_6 and the contact electrode 260_6 may not be in direct contact with the light blocking portion 810_6, and may be disposed to overlap with the light blocking portion 810_6.

[0243] Meanwhile, the light emitting element 300 may include a first light emitting element 300A_6 disposed in a region overlapping the opening pattern 820_6 and a second light emitting element 300B_6 disposed in a region overlapping the light blocking portion 810_6. Figure 1 The display device 10 shown in FIG. Figure 25 In the display device 10_6, the light emitting element 300 may also be disposed in a region overlapping the opening pattern 820_6, that is, in the non-emitting region NLA_6 except the emission region LA_6.

[0244] As shown in the accompanying drawings, a part of the external incident light IL can be absorbed by the light blocking portion 810_6, and the emitted light EL emitted from the light emitting element 300 can be emitted through Figure 26 the opening pattern 820_6. As described above, when the number of the first light emitting elements 300A_6 provided in the opening pattern 820_6 satisfies the number of the light emitting elements 300 corresponding to the amount of light required for each sub-pixel PXn, the light blocking portion 810_6 can be provided in the region where the second light emitting element 300B-6 is provided, thereby reducing the reflection of external light. In this case, the emitted light EL' emitted from the second light emitting element 300B_60 is incident on the light blocking portion 810_6 and absorbed by the light blocking portion 810_6. However, since the amount of light emitted from the first light emitting element 300A_6 satisfies the amount of light required for each sub-pixel PXn, the reflection of external light can be reduced due to the light blocking portion 810_6 in the non-emission region NLA_6.

[0245] Meanwhile, according to an embodiment, the emitted light EL' emitted from the second light emitting element 300B_6 can be reflected under the light blocking portion 810_6 and emitted through the opening pattern 820_6.

[0246] Figure 28 and Figure 29 are schematic cross-sectional views showing a display device according to still another embodiment. Figure 28 is a cross-sectional view including the non-emission region NLA_7 in which the light blocking portion 810_7 of the display device 10_7 is provided, and Figure 29 is a cross-sectional view including both the emission region LA_7 and the non-emission region NLA_7.

[0247] The light blocking layer 800_7 of the display device 10_7 according to the present embodiment may further include a reflection portion 830_7 provided under the light blocking portion 810_7 to reflect incident light.

[0248] Referring to Figure 28 , the display device 10_7 according to the present embodiment includes a reflection portion 830_7 provided in at least a partial region on the passivation layer 550_7 and a light blocking portion 810_7 provided on the reflection portion 830_7. The reflection portion 830_7 and the light blocking portion 810_7 may be formed in substantially the same pattern, and the light blocking portion 810_7 is provided in a region other than the emission region LA_7 where the opening pattern 820_7 for forming each sub-pixel PXn is formed.

[0249] As described above, when the light-blocking layer 800_7 is disposed on the passivation layer 550_7, the light-emitting elements 300 may be disposed in each of the emission region LA_7 and the non-emission region NLA_7. The emission light EL emitted from the first light-emitting element 300A_7 disposed in the emission region LA_7 may be emitted through the opening pattern 820_7 of the light-blocking layer 800_7.

[0250] On the other hand, the emission light EL' emitted from the second light-emitting element 300B_7 disposed in the non-emission region NLA_7 may be absorbed by the light-blocking portion 810_7 of the light-blocking layer 800_7. The light-blocking layer 800_7 of the display device 10_7 according to the present embodiment may include a reflection portion 830_7, which is disposed below the light-blocking portion 810_7 and includes a material having a high reflectivity. The reflection portion 830_7 may emit the emission light EL' of the second light-emitting element 300B_7 disposed in the non-emission region NLA_7.

[0251] As Figure 28 shown, the emission light EL' emitted from the second light-emitting element 300B_7 disposed in the non-emission region NLA_7 may be incident on the reflection portion 830_7 on the passivation layer 550_7. The reflection portion 830_7 may include a material having a high reflectivity such that the emission light EL' may be reflected into the passivation layer 550_7 (see Figure 26 EL”). The emission light EL” emitted from the second light-emitting element 300B_7 and reflected by the reflection portion 830_7 may move into the passivation layer 550_7. The contact electrode 260, the second insulating layer 520, the first insulating layer 510, etc. may be disposed below the passivation layer 550_7 and may include materials having refractive indices different from that of the passivation layer 550_7. The reflected emission light EL” incident on the interface between the passivation layer 550_7 and such members may be reflected again and may be incident on the reflection portion 830_7. According to one embodiment, the passivation layer 550_7 may provide a path through which the emission light EL' emitted from the second light-emitting element 300B_7 moves.

[0252] In addition, according to one embodiment, the emission light EL” reflected by the reflection portion 830_7 may be emitted by traveling to the region where the opening pattern 820_7 is formed.

[0253] Referring to Figure 29 , the emission light EL' emitted from the second light-emitting element 300B_7 in the non-emission region NLA_7 may be reflected by the reflection portion 830_7 and the interface between the passivation layer 550_7 and other members, and may travel through the passivation layer 550_7 to the opening pattern 820_7 of the emission region LA_7 (see Figure 27The emitted light EL emitted from the first light-emitting element 300A_7 provided in the emission region LA_7 can be emitted through the opening pattern 820_7 of the emission region LA_7.

[0254] That is, the display device 10_7 according to the present embodiment may include a light-blocking part 810_7 to reduce the reflection of external light. At the same time, the display device 10_7 may include a reflection part 830_7 between the light-blocking part 810_7 and the passivation layer 550_7 to emit the emitted light EL' emitted from the non-emission region NLA_7 through the emission region LA_7. Therefore, the display device 10_7 can increase the amount of light of the sub-pixel PXn and can effectively reduce the reflection of external light.

[0255] Figure 30 is a cross-sectional view of a display device according to still another embodiment.

[0256] Reference Figure 30 When the light-blocking layer 800_8 is provided on the passivation layer 550_8, the display device 10_8 may further include an encapsulation layer 900 provided on the light-blocking layer 800_8 to protect the light-blocking layer 800_8. To prevent the penetration of external impurities or moisture, the encapsulation layer 900 may be provided on the light-blocking layer 800_8 to seal the light-blocking layer 800_8.

[0257] The encapsulation layer 900 according to the present embodiment may include a transparent material and may be completely provided on the light-blocking layer 800_8 regardless of the opening pattern 820. That is, the encapsulation layer 900 may be provided to cover the light-blocking part 810_8, the passivation layer 550_8 exposed by the opening pattern 820, and the reflection part 830_8. However, the present disclosure is not limited thereto, and the encapsulation layer 900 may be provided only on the light-blocking part 810_8 of the light-blocking layer 800_8.

[0258] In addition, in the drawings, the encapsulation layer 900 is shown as being formed as a single layer, but the present disclosure is not limited thereto. The encapsulation layer 900 may have a structure in which one or more layers are stacked. As an example, the encapsulation layer 900 may have a structure in which a first inorganic encapsulation film, an organic encapsulation film, and a second inorganic encapsulation film are sequentially stacked.

[0259] The inorganic encapsulation film of the encapsulation layer 900 may be made of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride (SiON), lithium fluoride, etc. The organic encapsulation film of the encapsulation layer 900 may be made of at least one selected from acrylic-based resins, methacrylic-based resins, polyisoprene, vinyl resins, epoxy-based resins, urethane-based resins, cellulose-based resins, and binaphthyl-based resins. However, the present disclosure is not limited thereto.

[0260] Meanwhile, the display device 10 according to an embodiment may further include a color conversion part 700 disposed on the passivation layer 550. The color conversion part 700 may include a color conversion layer 750 that converts the central wavelength of the emission light EL emitted from the light-emitting element 300 and incident on the color conversion layer 750. When the display device 10 includes the color conversion part 700, a light-blocking layer 800 may be disposed on the color conversion part 700.

[0261] Figure 31 is a plan view of a display device according to another embodiment. Figure 32 is along Figure 31 sectional view taken along line IIf-IIf'.

[0262] Referring to Figure 31 and Figure 32 , the color conversion part 700 may include a base substrate 710, a light-blocking member 720, a color filter 730, a color conversion layer 750, and a step compensation structure 780. However, the present disclosure is not limited thereto, and a schematic structure of the color conversion part 700 will be described below.

[0263] The base substrate 710 may be made of a material having a light-transmitting property. As an example, the base substrate 710 may be a glass substrate or a transparent plastic substrate.

[0264] The light-blocking member 720 may be disposed on the base substrate 710. Similar to the light-blocking layer 800, the light-blocking member 720 may absorb or block incident light. In Figure 32 , the light-blocking member 720 is shown as being disposed only on one side, but the present disclosure is not limited thereto. The light-blocking member 720 may be disposed along the boundary of each pixel PX or sub-pixel PXn. In an embodiment, the light-blocking member 720 may form a grid pattern.

[0265] The color filter 730 may be disposed between the light blocking members 720 on the base substrate 710. The color filter 730 may selectively transmit light having a specific color and may absorb light having other colors to block the light from traveling. For example, when the emitted light EL emitted from the light emitting element 300 has a first color and the color filter 730 transmits the light having the first color and absorbs the light having other colors or blocks the transmission of light, the light having the first color of the light emitting element 300 may be emitted from the color conversion section 700. On the contrary, when the color filter 730 absorbs the light having the first color or blocks the transmission of light, the light having the first color may not be emitted from the color conversion section 700. Although not shown in the drawings, a plurality of color filters 730 may be provided in each pixel PX or sub-pixel PXn of the display device 10_9. The plurality of color filters 730 may transmit light beams having different colors so that the display device 10_9 can display a variety of colors.

[0266] The color conversion layer 750 may be disposed on the color filter 730. The color conversion layer 750 may include color conversion particles 755 that convert the wavelength of incident light and a base resin 758 in which the color conversion particles 755 are dispersed.

[0267] When light EL having a center wavelength of a first wavelength is incident, the color conversion particles 755 may convert the light EL into light CL having a second wavelength different from the first wavelength to emit the light CL. For example, when light having a first color is incident on the color conversion particles 755, the color conversion particles 755 may emit light having a second color different from the first color.

[0268] For example, the color conversion particles 755 may be quantum dots, quantum rods, or phosphor materials. Quantum dots may be particulate materials that emit light having a specific wavelength when electrons transition from the conduction band to the valence band. However, the present disclosure is not limited thereto.

[0269] The base resin 758 may include a material having a high light transmittance and excellent dispersion characteristics for the color conversion particles 755. As an example, the base resin 758 may include an organic material such as an epoxy-based resin, an acrylic-based resin, a cardo-based resin, or an imide-based resin.

[0270] Meanwhile, as Figure 31As shown in [Fig.], the color conversion section 700 of the display device 10_9 may include a first color conversion layer 751, a second color conversion layer 752, and a third color conversion layer 753 for each pixel PX or sub-pixel PXn. The first color conversion layer 751, the second color conversion layer 752, and the third color conversion layer 753 may convert incident light having a first color into light having a different color. For example, the first color conversion layer 751 may scatter light having the first color to emit light having the first color, the second color conversion layer 752 may absorb light having the first color to emit light having a second color, and the third color conversion layer 753 may absorb light having the first color to emit light having a third color. However, the present disclosure is not limited thereto.

[0271] The step compensation structure 780 may be provided on the light blocking member 720. The step compensation structure 780 may be provided between the light blocking member 720 and the third bank 430 to perform the function of supporting the color conversion section 700. In addition, when a predetermined step portion is formed on the passivation layer 550, the step compensation structure 780 may compensate for the step portion formed on the upper surface of the passivation layer 550.

[0272] Figure 31 and Figure 32 Only a schematic structure of the color conversion section 700 is shown. However, the structure of the display device 10_9 is not limited thereto, and more components may be provided.

[0273] Meanwhile, in the display device 10_9 according to the present embodiment, a light blocking layer 800_9 may be provided in the color conversion section 700. Specifically, the light blocking layer 800_9 may be provided between the light blocking member 720 and the color filter 730 of the color conversion section 700. The light blocking layer 800_9 may absorb the incident light IL incident on the base substrate 710. The emitted light EL emitted from the light emitting element 300 may be incident on the color conversion layer 750 and may be emitted as emitted light CL having a different center wavelength.

[0274] As described above, the light blocking layer 800_9 may include a light blocking portion 810_9 that absorbs the incident light IL incident thereon and an opening pattern 820 (not shown) in which the light blocking portion 810_9 is not provided. The light blocking layer 800_9 provided in the color conversion section 700 may include the light blocking portion 810_9 provided between the light blocking member 720 and the color filter 730, and it can be understood that the region where the color filter 730 and the color conversion layer 750 are provided is substantially the same as the opening pattern 820.

[0275] Figure 33 is a cross-sectional view taken along the line IIf-IIf' according to another embodiment. Figure 31 of.

[0276] Referring to Figure 33 , the light blocking layer 800_10 of the display device 10_10 according to the present embodiment may further include a reflection part 830_10. When light emitted from the light emitting element 300 is incident, the reflection part 830_10 may reflect the incident light to Figure 31 the opening pattern 820 (not shown) or the color conversion layer 750. Since the function and structure of the reflection part 830_10 are the same as those described above, a detailed description thereof will be omitted.

[0277] Upon concluding the detailed description, those skilled in the art will understand that many variations and modifications can be made to the preferred embodiments without substantially departing from the principles of the present invention. Therefore, the disclosed preferred embodiments of the present invention are used only in a general and descriptive sense and not for the purpose of limitation.

Claims

1. A display device, comprising: a first electrode and a second electrode, the second electrode being disposed to be spaced apart from and facing the first electrode; a light blocking layer disposed on the first electrode and the second electrode; one or more light emitting elements disposed between the first electrode and the second electrode; a first contact electrode disposed on the first electrode and the light emitting element; and a second contact electrode disposed on the second electrode and the light emitting element, wherein the light blocking layer includes a light blocking portion configured to absorb light and an opening pattern, the light blocking portion includes an electrode overlapping region that partially overlaps with the first electrode and the second electrode, the opening pattern exposes portions of the first electrode and the second electrode facing each other, and exposes at least a portion of the region between the first electrode and the second electrode facing each other, the one or more light emitting elements are disposed to overlap with the opening pattern, the first contact electrode is in partial contact with the first electrode and one end portion of the light emitting element, and the second contact electrode is in partial contact with the second electrode and the other end portion of the light emitting element.

2. The display device according to claim 1, wherein the light blocking portion is directly disposed on the upper surfaces of the first electrode and the second electrode, at least a portion of the region of the light blocking portion is recessed from each of the side surfaces of the first electrode and the second electrode, and the opening pattern is disposed in the recessed region of the light blocking portion.

3. The display device according to claim 2, wherein the light blocking portion includes at least one selected from chromium oxide, chromium-chromium oxide mixture, molybdenum oxide, carbon pigment, and red-green-blue three-color pigment.

4. The display device according to claim 1, further comprising a first insulating layer disposed to cover at least a portion of the first electrode and the second electrode, wherein the light blocking layer is disposed on the first insulating layer.

5. The display device according to claim 4, wherein the opening pattern includes a first opening pattern and a second opening pattern spaced apart from each other, and a light blocking portion bridging portion is disposed in the separation region between the first opening pattern and the second opening pattern.

6. The display device according to claim 4, wherein the first contact electrode and the second contact electrode are disposed on the first insulating layer.

7. The display device according to claim 6, wherein the contact electrode is disposed such that at least a portion of the contact electrode overlaps with the opening pattern.

8. The display device according to claim 6, wherein at least a portion of the contact electrode partially overlaps with the light blocking portion.

9. The display device according to claim 1, further comprising a second insulating layer disposed to cover the first electrode, the second electrode, and the light emitting element.

10. The display device according to claim 9, wherein the light blocking layer is disposed on the second insulating layer, and The light-emitting element further includes a first light-emitting element disposed to overlap the opening pattern and a second light-emitting element disposed to overlap the light-blocking portion.

11. The display device according to claim 10, wherein, the light-blocking layer further includes a reflection portion disposed between the second insulating layer and the light-blocking portion.

12. The display device according to claim 11, wherein, at least a part of the first light emitted from the first light-emitting element is emitted through the opening pattern, and at least a part of the second light emitted from the second light-emitting element is reflected by the reflection portion toward the opening pattern.

13. The display device according to claim 9, further comprising a color conversion portion disposed on the second insulating layer and configured to convert the wavelength of the light emitted from the light-emitting element, and at least a part of the light is incident on the color conversion portion, wherein, the light-blocking layer is further disposed in the color conversion portion.

14. A display device, comprising: a first electrode and a second electrode, the first electrode and the second electrode extending in a first direction and disposed to be spaced apart from each other; a light-blocking layer disposed on the first electrode and the second electrode; one or more light-emitting elements disposed between the first electrode and the second electrode, and two end portions of the one or more light-emitting elements being electrically connected to the first electrode and the second electrode; a first contact electrode disposed on the first electrode and the one or more light-emitting elements; and a second contact electrode disposed on the second electrode and the one or more light-emitting elements, wherein the light-blocking layer includes a light-blocking portion configured to absorb light and at least one opening pattern, at least a part of the opening pattern extending in the first direction, at least a part of the area of the light-blocking portion overlaps with the first electrode and the second electrode, the opening pattern exposes portions of the first electrode and the second electrode facing each other and exposes at least a part of the area between the first electrode and the second electrode facing each other, the one or more light-emitting elements are disposed to overlap with the opening pattern, the first contact electrode is in partial contact with the first electrode and the first end portion of the one or more light-emitting elements, and the second contact electrode is in partial contact with the second electrode and the second end portion of the one or more light-emitting elements.

15. The display device according to claim 14, further comprising a first insulating layer disposed to cover at least a part of the first electrode and the second electrode, wherein, the light-blocking layer is disposed on the first insulating layer.

16. The display device according to claim 15, wherein, the light-blocking portion includes at least one selected from chromium oxide, chromium-chromium oxide mixture, molybdenum oxide, carbon pigment, and red-green-blue three-color pigment.

17. The display device according to claim 15, wherein, the opening pattern includes a first opening pattern and a second opening pattern extending in the first direction, and The widths of the first opening pattern and the second opening pattern are greater than the interval between the first electrode and the second electrode.

18. The display device according to claim 17, wherein, the light-blocking portion includes a light-blocking portion bridging part disposed between the first opening pattern and the second opening pattern spaced apart from each other.

19. The display device according to claim 18, wherein, the first opening pattern and the second opening pattern are spaced apart from each other in the first direction, and the light-blocking portion bridging part extends in a second direction different from the first direction.

20. The display device according to claim 18, wherein, the first opening pattern and the second opening pattern are spaced apart from each other in a second direction different from the first direction, and the light-blocking portion bridging part extends in the first direction.

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