Display device

Abstract

A display device is provided. The display device includes: a first substrate; a first inner bank portion and a second inner bank portion, which are arranged to extend in a first direction on the first substrate and are spaced apart from each other in a second direction different from the first direction; a first electrode, including a first main electrode and a first sub-electrode, the first main electrode being arranged to extend in the first direction on one side of the first inner bank portion, the first sub-electrode being arranged to extend in the first direction on the other side of the first inner bank portion and being at least partially spaced apart from and facing the first main electrode; a second electrode, which is arranged to extend in the first direction on the second inner bank portion and is spaced apart from and faces the first main electrode; and a light-emitting element, which is arranged between the first inner bank portion and the second inner bank portion, wherein the light-emitting element has one end disposed on the first main electrode and the other end disposed on the second electrode.

Description

Technical Field

[0001] The present disclosure relates to a display device. 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 display (OLED) devices and liquid crystal display (LCD) devices, are being used.

[0003] A display panel, such as an OLED panel or an LCD panel, is a device included in a display device to display an image. Among these display panels, a light emitting element may be provided as a light emitting display panel, and examples of light emitting diodes (LEDs) include an organic LED using an organic material as a fluorescent material and an inorganic LED using an inorganic material as a fluorescent material. Summary of the Invention

[0004] Technical Problem

[0005] Aspects of the present disclosure provide a display device including an electrode to which the same voltage as any one of electrodes is applied between electrodes to which different voltages are applied.

[0006] Aspects of the present disclosure also provide a display device in which dispersion according to an alignment position of a light emitting element is improved.

[0007] It should be noted that aspects of the present disclosure are not limited thereto, and other aspects not mentioned herein will be apparent to those of ordinary skill in the art from the following description.

[0008] Technical Solution

[0009] According to an embodiment of the present disclosure, a display device includes: a first substrate; a first inner bank portion and a second inner bank portion, provided to extend in a first direction on the first substrate and spaced apart from each other in a second direction different from the first direction; a first electrode including a first main electrode and a first sub - electrode, the first main electrode provided to extend in the first direction on one side of the first inner bank portion, the first sub - electrode provided to extend in the first direction on the other side of the first inner bank portion and at least partially spaced apart from and facing the first main electrode; a second electrode, provided to extend in the first direction on the second inner bank portion, and spaced apart from and facing the first main electrode; and a light emitting element, provided between the first inner bank portion and the second inner bank portion, wherein the light emitting element has one end disposed on the first main electrode and the other end disposed on the second electrode.

[0010] A non - alignment region in which the light emitting element is not provided is formed on the first inner bank portion, and the non - alignment region partially overlaps with a region in which the first main electrode and the first sub - electrode are spaced apart from each other.

[0011] The second electrode includes a second main electrode and a second sub - electrode. The second main electrode is arranged to extend in a first direction on one side of the second inner embankment portion, and the second sub - electrode is arranged to extend in the first direction on the other side of the second inner embankment portion.

[0012] The other end of the light - emitting element is arranged on the second main electrode.

[0013] The first main electrode and the first sub - electrode are spaced apart from each other and face each other in a second direction on the first inner embankment portion, and are not connected to each other, and the first sub - electrode is not electrically connected to the light - emitting element.

[0014] The second electrode further includes a bridging portion which is at least partially arranged between the second main electrode and the second sub - electrode on the second inner embankment portion, and at least a part of the second main electrode and the second sub - electrode are spaced apart from each other and face each other.

[0015] The display device may further include: a first contact electrode arranged to extend in the first direction on the first main electrode and in contact with one end of the light - emitting element; and a second contact electrode arranged to extend in the first direction on the second main electrode and arranged on the other end of the light - emitting element.

[0016] The light - emitting element has a shape in which it extends in one direction, and the interval between the first contact electrode and the second contact electrode is less than the length of the light - emitting element.

[0017] The widths of the first main electrode and the second main electrode are less than the widths of the first contact electrode and the second contact electrode.

[0018] The first main electrode has the same width as the first sub - electrode, and the interval between the first main electrode and the first sub - electrode is less than the width of the first inner embankment portion.

[0019] A first source voltage is applied to the first main electrode, but not to the first sub - electrode.

[0020] The display device may further include a first electrode segment spaced apart from the first sub - electrode and the first inner embankment portion in the first direction.

[0021] The display device may further include: a third inner embankment portion arranged to extend in the first direction between the first inner embankment portion and the second inner embankment portion; and a plurality of third electrodes arranged on both sides of the third inner embankment portion and spaced apart from each other in the second direction. Among them, the third electrode arranged on one side of the two sides of the third inner embankment portion is spaced apart from and faces the first main electrode, and the third electrode arranged on the other side of the two sides of the third inner embankment portion is spaced apart from and faces the second electrode.

[0022] The light-emitting elements include a first light-emitting element disposed between the first inner bank portion and the third inner bank portion, and a second light-emitting element disposed between the third inner bank portion and the second inner bank portion.

[0023] The display device may further include a plurality of second electrode segments spaced apart from the third electrode and the third inner bank portion in a first direction.

[0024] The display device may further include: a fourth inner bank portion disposed to extend in the first direction between the first inner bank portion and the third inner bank portion; and a plurality of fourth electrodes disposed on both sides of the fourth inner bank portion and spaced apart from each other in a second direction, wherein the light-emitting elements further include a third light-emitting element disposed between the fourth inner bank portion and the third inner bank portion.

[0025] According to another embodiment of the present invention, a display device includes: a first substrate; a first inner bank portion and a second inner bank portion disposed on the first substrate and spaced apart from and facing each other; a first electrode including a first sub-electrode disposed to cover one side of the first inner bank portion and a first main electrode disposed to cover the other side of the first inner bank portion; a second electrode including a second main electrode disposed to cover one side of the second inner bank portion and a second sub-electrode disposed to cover the other side of the second inner bank portion; and a light-emitting element disposed between the first inner bank portion and the second inner bank portion, wherein the first electrode is not disposed on at least a part of the upper surface of the first inner bank portion, and the second electrode is not disposed on at least a part of the upper surface of the second inner bank portion.

[0026] The display device may further include a first insulating layer covering a part of the first electrode and the second electrode, wherein the first insulating layer covers the first sub-electrode and the second sub-electrode, but is disposed to expose a part of the upper surfaces of the first main electrode and the second main electrode.

[0027] The display device may further include: a first contact electrode disposed on the first main electrode and in contact with one end of the light-emitting element; and a second contact electrode disposed on the second main electrode and in contact with the other end of the light-emitting element.

[0028] The first main electrode is electrically connected to a first voltage line to which a first source voltage is applied.

[0029] The second contact electrode is in contact with a second voltage line to which a second source voltage is applied.

[0030] According to another embodiment of the present disclosure, a display device includes: a first inner embankment portion in which at least one hole is formed; a first electrode disposed on the first inner embankment portion and having at least one electrode hole formed therein to partially expose the hole corresponding to the hole; a second inner embankment portion disposed in the hole of the first inner embankment portion and spaced apart from a sidewall of the hole of the first inner embankment portion; a second electrode disposed to cover an outer surface of the second inner embankment portion but disposed to expose a part of an upper surface of the second inner embankment portion; and a plurality of light-emitting elements disposed between the first inner embankment portion and the second inner embankment portion and having both ends electrically connected to the first electrode and the second electrode, wherein the first electrode is disposed such that at least a part thereof covers a sidewall of the hole of the first inner embankment portion.

[0031] The second electrode includes: a main electrode disposed to cover an outer surface of the second inner embankment portion spaced apart from and facing the first inner embankment portion; an electrode extension portion disposed on the exposed upper surface of the second inner embankment portion and spaced apart from the main electrode; and a bridging portion connecting the electrode extension portion and the main electrode to each other.

[0032] The display device may further include: a first contact electrode disposed on the first electrode and disposed along a sidewall of the hole of the first inner embankment portion; and a second contact electrode disposed on the main electrode of the second electrode and having a width larger than that of the main electrode.

[0033] The above and other features and advantages of the present invention will become more apparent by describing exemplary embodiments of the present invention in detail with reference to the accompanying drawings.

[0034] Advantageous Effects

[0035] The display device according to an embodiment may include inner embankment portions disposed to be spaced apart from each other and different electrodes disposed on the inner embankment portions, and at least one of the electrodes may include a main electrode and a sub-electrode disposed on the same inner embankment portion. During a process of manufacturing the display device, the same alignment signal may be applied to the main electrode and the sub-electrode, and an electric field may be generated between the main electrode and the sub-electrode, and the electric field guides the light-emitting elements not to be disposed between the main electrode and the sub-electrode.

[0036] Therefore, in the display device, the light-emitting elements may be guided to be disposed between different electrodes, an alignment region where the light-emitting elements are disposed may be formed between the inner embankment portions, and a non-alignment region where the light-emitting elements are not disposed may be formed between the main electrode and the sub-electrode on the inner embankment portion. The display device according to an embodiment may include the main electrode and the sub-electrode disposed on the same inner embankment portion to guide the light-emitting elements to be concentratedly disposed in the alignment region.

[0037] The effects according to the embodiments are not limited to the contents of the above examples, and more various effects are included in the present disclosure. Brief Description of the Drawings

[0038] Figure 1 is a plan view of a display device according to an embodiment;

[0039] Figure 2 is a plan view showing one pixel of a display device according to an embodiment;

[0040] Figure 3 is a view showing Figure 2 a plan view of a sub-pixel of;

[0041] Figure 4 is a cross-sectional view taken along line IV-IV' of; Figure 3 ;

[0042] Figure 5 is a view showing Figure 3 a cross-sectional view taken along line V-V' of;

[0043] Figure 6 is a schematic view of a light-emitting element according to an embodiment;

[0044] Figures 7 to 9 is a cross-sectional view showing some of the processes for manufacturing a display device according to an embodiment;

[0045] Figure 10 is a plan view showing a sub-pixel of a display device according to another embodiment;

[0046] Figure 11 is a view showing Figure 10 a cross-sectional view taken along line Q1-Q1' of;

[0047] Figure 12 is a view showing the electric field formed between electrodes during the process of manufacturing the display device of; Figure 10 ;

[0048] Figure 13 is a plan view showing a sub-pixel of a display device according to another embodiment;

[0049] Figure 14 is a plan view showing a sub-pixel of a display device according to still another embodiment;

[0050] Figure 15 is a plan view showing a sub-pixel of a display device according to another embodiment;

[0051] Figure 16 is a plan view showing a sub-pixel of a display device according to still another embodiment;

[0052] Figure 17 and Figure 18 is a plan view showing a sub-pixel of a display device according to other embodiments;

[0053] Figure 19 is a plan view showing a sub - pixel of a display device according to yet another embodiment;

[0054] Figure 20 is Figure 19 an enlarged view of part Q2 of

[0055] Figure 21 is a cross - sectional view taken along line Q3 - Q3' of Figure 19 ;

[0056] Figure 22 is a plan view showing a sub - pixel of a display device according to another embodiment;

[0057] Figure 23 is along Figure 22 a cross - sectional view taken along line Q4 - Q4' of

[0058] Figure 24 is a plan view showing a sub - pixel of a display device according to another embodiment;

[0059] Figure 25 and Figure 26 are plan views showing a sub - pixel of a display device according to other embodiments;

[0060] Figure 27 is a plan view showing a sub - pixel of a display device according to yet another embodiment;

[0061] Figure 28 is along Figure 27 a cross - sectional view taken along line Q5 - Q5' of

[0062] Figure 29 is a plan view showing a sub - pixel of a display device according to yet another embodiment;

[0063] Figure 30 is Figure 29 an enlarged view of part Q6 of

[0064] Figure 31 is along Figure 30 a cross - sectional view taken along line Q7 - Q7' of

[0065] Figure 32 is a schematic diagram showing an electric field formed between electrodes during the process of manufacturing Figure 31 the display device; and

[0066] Figure 33 and Figure 34 are plan views showing a sub - pixel of a display device according to other embodiments. Detailed Description

[0067] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, the 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 invention to those skilled in the art.

[0068] It will 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, like reference numerals refer to like components.

[0069] It will be understood that although the terms “first,” “second,” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element discussed below may be referred to as a second element without departing from the teachings of the present invention. Similarly, a second element may also be referred to as a first element.

[0070] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0071] Figure 1 is a plan view of a display device according to an embodiment.

[0072] Reference Figure 1 , the display device 10 displays moving images or still images. The display device 10 may refer to all electronic devices that provide a display screen. For example, a television, a laptop computer, a monitor, a billboard, an Internet of Things (IoT) device, a mobile phone, a smart phone, a tablet personal computer (PC), an electronic watch, a smart watch, a watch phone, a head-mounted display, a mobile communication terminal, an electronic notebook, an e-book, a portable multimedia player (PMP), a navigation device, a gaming machine, a digital camera, a portable video camera, etc. that provide a display screen may be included in the display device 10.

[0073] The display device 10 includes a display panel that provides a display screen. Examples of the display panel may include an inorganic light-emitting diode display panel, an organic light-emitting display panel, a quantum dot light-emitting display panel, a plasma display panel, a field emission display panel, etc. Hereinafter, a case where an inorganic light-emitting diode display panel is used as an example of the display panel will be described by way of example, but the present disclosure is not limited thereto, and the same technical spirit can be applied to other display panels if applicable.

[0074] The shape of the display device 10 can be modified in various ways. For example, the display device 10 can have a shape such as a rectangular shape with a width greater than the length, a rectangular shape with a length greater than the width, a square shape, a rectangular shape with rounded corners (vertices), other polygonal shapes, or a circular shape. The shape of the display area DPA of the display device 10 can also be similar to the overall shape of the display device 10. In Figure 1 a display area DPA having a rectangular shape with a width greater than the length and the display device 10 are shown.

[0075] The display device 10 can include a display area DPA and a non-display area NDA. The display area DPA is an area where a screen can be displayed, and the non-display area NDA is an area where no screen is displayed. The display area DPA can also be referred to as an active area, and the non-display area NDA can also be referred to as an inactive area. The display area DPA can substantially occupy the center of the display device 10.

[0076] The display area DPA can include a plurality of pixels PX. The plurality of pixels PX can be arranged in a matrix form. In a plan view, the shape of each pixel PX can be a rectangular shape or a square shape, but is not limited thereto, and can also be a rhombus shape in which each side is inclined with respect to one direction. The corresponding pixels PX can be alternately arranged in a stripe type or a PenTile type. In addition, each of the pixels PX can include one or more light-emitting elements 300 that emit light in a specific wavelength band to display a specific color (see Figure 2 ).

[0077] The non-display area NDA can be provided around the display area DPA. The non-display area NDA can completely or partially surround the display area DPA. The display area DPA can have a rectangular shape, and the non-display area NDA can be provided adjacent to the four sides of the display area DPA. The non-display area NDA can form a border of the display device 10. Wires or circuit drivers included in the display device 10 can be provided in each of the non-display areas NDA, or external devices can be mounted in each of the non-display areas NDA.

[0078] Figure 2 is a plan view showing one pixel of a display device according to an embodiment. Figure 3 is showing Figure 2 a plan view of one sub-pixel of. Figure 4 is a cross-sectional view taken along line IV-IV' of Figure 3 the. Figure 5 is a cross-sectional view taken along line V-V' of Figure 3 the.

[0079] Refer to Figure 2 and Figure 3, 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 of a first color, the second sub-pixel PX2 may emit light of a second color, and the third sub-pixel PX3 may emit light of a third color. The first color may be blue, the second color may be green, and the third color may be red. However, the present disclosure is not limited thereto, and the corresponding sub-pixels PXn (n is a positive integer such as 1, 2, 3, or greater) may also emit light of the same color. In addition, in Figure 2 it has been shown that the pixel PX includes three sub-pixels PXn, but the present disclosure is not limited thereto, and the pixel PX may include a greater number of sub-pixels PXn.

[0080] Each of the sub-pixels PXn of the display device 10 may include a region defined as an emission region EMA. The first sub-pixel PX1 may include a first emission region EMA1, the second sub-pixel PX2 may include a second emission region EMA2, and the third sub-pixel PX3 may include a third emission region EMA3. The emission region EMA may be defined as a region in which the light-emitting element 300 included in the display device 10 is arranged to emit light in a specific wavelength band. The light-emitting element 300 may include an active layer 330 (see Figure 6 ), and the active layer 330 may emit light in a specific wavelength band without directivity. The light emitted from the active layer 330 of the light-emitting element 300 may be emitted in the directions of two side surfaces of the light-emitting element 300. The emission region EMA may include the region in which the light-emitting element 300 is provided, and may include the region in which the light emitted from the light-emitting element 300 is emitted, as a region adjacent to the light-emitting element 300.

[0081] The present disclosure is not limited thereto, and the emission region EMA may further include a region in which the light emitted from the light-emitting element 300 is reflected or refracted by other members and then emitted. A plurality of light-emitting elements 300 may be provided in each sub-pixel PXn, and the emission region EMA includes the region in which the plurality of light-emitting elements 300 are provided, and may form a region adjacent to the plurality of light-emitting elements 300.

[0082] Although not shown in the drawings, each of the sub-pixels PXn of the display device 10 may include a non-emission region defined as a region other than the emission region EMA. The non-emission region may be a region in which the light-emitting element 300 is not provided and the light emitted from the light-emitting element 300 does not reach and thus does not emit light.

[0083] In addition, for each sub-pixel PXn, the display device 10 may include an alignment region AA in which the light-emitting element 300 is disposed and a non-alignment region NA in which the light-emitting element 300 is not disposed. According to the arrangement of the electrodes 210 and 220 of the display device 10, the alignment region AA and the non-alignment region NA may be defined as the region in which the light-emitting element 300 is disposed and the region in which the light-emitting element 300 is not disposed among the regions between the electrodes 210 and 220 of the display device 10, respectively. A detailed description thereof will be provided later.

[0084] Figure 4 and Figure 5 only shows Figure 2 and Figure 3 a cross-section of the first sub-pixel PX1, but the same can also be applied to other pixels PX or sub-pixels PXn. Figure 4 shows a cross-section across one end and the other end of the light-emitting element 300 disposed in the first sub-pixel PX1 provided across. In addition, Figure 3 shows a cross-section across the first electrode 210 and the second electrode 220 respectively disposed on the first inner bank portion 410 and the second inner bank portion 420 along the line V-V' of Figure 5 shows along Figure 3 .

[0085] Combined with Figure 2 and Figure 3 referring to Figure 4 and Figure 5 , the display device 10 may include a circuit element layer and a display element layer disposed on the first substrate 101. A semiconductor layer, a plurality of conductive layers, and a plurality of insulating layers may be disposed on the first substrate 101, and may respectively constitute the circuit element layer and the display element layer. The plurality of conductive layers may include a first gate conductive layer, a second gate conductive layer, a first data conductive layer, and a second data conductive layer disposed below the first planarization layer 109 and constituting the circuit element layer, and electrodes 210 and 220 and contact electrodes 261 and 262 disposed on the first planarization layer 109 and constituting the display element layer. The plurality of insulating layers may include a buffer layer 102, a first gate insulating layer 103, a first passivation layer 105, a first interlayer insulating layer 107, a second interlayer insulating layer 108, a first planarization layer 109, a first insulating layer 510, a second insulating layer 520, a third insulating layer 530, a fourth insulating layer 550, etc.

[0086] The circuit element layer may include a driving transistor DT, a switching transistor ST, a first conductive pattern CDP, a plurality of voltage lines VL1 and VL2, and alignment lines AL as circuit elements and a plurality of lines for driving the light-emitting element 300, and the display element layer may include a first electrode 210, a second electrode 220, a first contact electrode 261, and a second contact electrode 262, etc., and the light-emitting element 300.

[0087] The first substrate 101 may be an insulating substrate. The first substrate 101 may be made of an insulating material such as glass, quartz, or polymer resin. In addition, the first substrate 101 may be a rigid substrate, but may also be a flexible substrate that can be bent, folded, or curled.

[0088] The light-blocking layers BML1 and BML2 may be disposed on the first substrate 101. The light-blocking layers BML1 and BML2 may include a first light-blocking layer BML1 and a second light-blocking layer BML2. The first light-blocking layer BML1 and the second light-blocking layer BML2 are disposed to at least overlap with the first active material layer DT_ACT of the driving transistor DT and the second active material layer ST_ACT of the switching transistor ST, respectively. The light-blocking layers BML1 and BML2 may include a light-blocking material to prevent light from incident on the first active material layer DT_ACT and the second active material layer ST_ACT. As an example, the first light-blocking layer BML1 and the second light-blocking layer BML2 may be made of an opaque metal material that blocks light transmission. However, the present disclosure is not limited thereto, and in some cases, the light-blocking layers BML1 and BML2 may be omitted. Although not shown in the drawings, the first light-blocking layer BML1 is electrically connected to the first source / drain electrode DT_SD1 of the driving transistor DT to be described later, and the second light-blocking layer BML2 may be electrically connected to the first source / drain electrode ST_SD1 of the switching transistor ST.

[0089] The buffer layer 102 may be entirely disposed on the first substrate 101 and on the light-blocking layers BML1 and BML2. The buffer layer 102 may be formed on the first substrate 101 to protect the transistors DT and ST of the pixel PX from moisture penetration through the first substrate 101 vulnerable to moisture penetration, and may perform a surface planarization function. The buffer layer 102 may include a plurality of inorganic layers stacked alternately. For example, the buffer layer 102 may be formed as a multi-layer in which inorganic layers including at least one of silicon oxide (SiO x ), silicon nitride (SiN x ), and silicon oxynitride (SiON) are stacked alternately.

[0090] A semiconductor layer is disposed on the buffer layer 102. The semiconductor layer may include a first active material layer DT_ACT of the driving transistor DT and a second active material layer ST_ACT of the switching transistor ST. The first active material layer DT_ACT and the second active material layer ST_ACT may be disposed to partially overlap with parts such as the gate electrodes DT_G and ST_G of the first gate conductive layer to be described later.

[0091] In an exemplary embodiment, the semiconductor layer may include polysilicon, single-crystalline silicon, an oxide semiconductor, etc. The polysilicon may be formed by crystallizing amorphous silicon. Examples of the crystallization method may include a rapid thermal annealing (RTA) method, a solid-phase crystallization (SPC) method, an excimer laser annealing (ELA) method, a metal-induced lateral crystallization (MILC) method, a sequential lateral solidification (SLS) method, etc., but are not limited thereto. When the semiconductor layer includes polysilicon, the first active material layer DT_ACT may include a first doped region DT_ACTa, a second doped region DT_ACTb, and a first channel region DT_ACTc. The first channel region DT_ACTc may be disposed between the first doped region DT_ACTa and the second doped region DT_ACTb. The second active material layer ST_ACT may include a third doped region ST_ACTa, a fourth doped region ST_ACTb, and a second channel region ST_ACTc. The second channel region ST_ACTc may be disposed between the third doped region ST_ACTa and the fourth doped region ST_ACTb. The first doped region DT_ACTa, the second doped region DT_ACTb, the third doped region ST_ACTa, and the fourth doped region ST_ACTb may be regions formed by doping partial regions of the first active material layer DT_ACT and the second active material layer ST_ACT with impurities.

[0092] In an exemplary embodiment, the first active material layer DT_ACT and the second active material layer ST_ACT may include an oxide semiconductor. In this case, each of the doped regions in the first active material layer DT_ACT and the second active material layer ST_ACT may be a conductive region. The oxide semiconductor may be an oxide semiconductor containing indium (In). In some embodiments, the oxide semiconductor may be indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium zinc tin oxide (IZTO), indium gallium tin oxide (IGTO), indium gallium zinc tin oxide (IGZTO), etc. However, the present disclosure is not limited thereto.

[0093] The first gate insulating layer 103 is disposed on the semiconductor layer and the buffer layer 102. The first gate insulating layer 103 may be disposed on the buffer layer 102 and on the semiconductor layer. The first gate insulating layer 103 may serve as a gate insulating film for driving the driving transistor DT and the switching transistor ST. The first gate insulating layer 103 may be formed to include an inorganic layer of an inorganic material such as silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (SiON), or may be formed in a structure in which such inorganic layers are stacked.

[0094] The first gate conductive layer is disposed on the first gate insulating layer 103. The first gate conductive layer may include a first gate electrode DT_G of the driving transistor DT and a second gate electrode ST_G of the switching transistor ST. The first gate electrode DT_G may be disposed to overlap with the first channel region DT_ACTc of the first active material layer DT_ACT in the thickness direction, and the second gate electrode ST_G may be disposed to overlap with the second channel region ST_ACTc of the second active material layer ST_ACT in the thickness direction.

[0095] The first gate conductive layer may be formed as a single layer or a multi-layer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof. However, the present disclosure is not limited thereto.

[0096] The first passivation layer 105 is disposed on the first gate conductive layer. The first passivation layer 105 may be disposed to cover the first gate conductive layer for protecting the first gate conductive layer. The first passivation layer 105 may be formed as an inorganic layer including an inorganic material such as silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (SiON), or may be formed as a structure in which such inorganic layers are stacked.

[0097] The second gate conductive layer is disposed on the first passivation layer 105. The second gate conductive layer may include a first capacitor electrode CE1 of the storage capacitor, wherein at least a partial region of the storage capacitor is disposed to overlap with the first gate electrode DT_G in the thickness direction. The first capacitor electrode CE1 may overlap with the first gate electrode DT_G in the thickness direction, with the first passivation layer 105 interposed therebetween, and the storage capacitor may be formed between the first capacitor electrode CE1 and the first gate electrode DT_G. The second gate conductive layer may be formed as a single layer or a multi-layer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof. However, the present disclosure is not limited thereto.

[0098] The first interlayer insulating layer 107 is disposed on the second gate conductive layer. The first interlayer insulating layer 107 may serve as an insulating film between the second gate conductive layer and other layers disposed above the second gate conductive layer. The first interlayer insulating layer 107 may be formed as an inorganic layer including an inorganic material such as silicon oxide (SiO x ), silicon nitride (SiN x ), or silicon oxynitride (SiON), or may be formed as a structure in which such inorganic layers are stacked.

[0099] The first data conductive layer is disposed on the first interlayer insulating layer 107. The first gate conductive layer may include a first source / drain electrode DT_SD1 and a second source / drain electrode DT_SD2 of the driving transistor DT, and a first source / drain electrode ST_SD1 and a second source / drain electrode ST_SD2 of the switching transistor ST.

[0100] The first source / drain electrode DT_SD1 and the second source / drain electrode DT_SD2 of the driving transistor DT may be in contact with a first doped region DT_ACTa and a second doped region DT_ACTb of the first active material layer DT_ACT through contact holes respectively passing through the first interlayer insulating layer 107 and the first gate insulating layer 103. The first source / drain electrode ST_SD1 and the second source / drain electrode ST_SD2 of the switching transistor ST may be in contact with a third doped region ST_ACTa and a fourth doped region ST_ACTb of the second active material layer ST_ACT through contact holes respectively passing through the first interlayer insulating layer 107 and the first gate insulating layer 103. In addition, the first source / drain electrode DT_SD1 of the driving transistor DT and the first source / drain electrode ST_SD1 of the switching transistor ST may be electrically connected to a first light blocking layer BML1 and a second light blocking layer BML2 respectively through other contact holes. Meanwhile, when any one of the first source / drain electrodes DT_SD1 and ST_SD1 and the second source / drain electrodes DT_SD2 and ST_SD2 of the driving transistor DT and the switching transistor ST is a source electrode, the other of the first source / drain electrodes DT_SD1 and ST_SD1 and the second source / drain electrodes DT_SD2 and ST_SD2 may be a drain electrode. However, the present disclosure is not limited thereto, and when any one of the first source / drain electrodes DT_SD1 and ST_SD1 and the second source / drain electrodes DT_SD2 and ST_SD2 is a drain electrode, the other of the first source / drain electrodes DT_SD1 and ST_SD1 and the second source / drain electrodes DT_SD2 and ST_SD2 may be a source electrode.

[0101] The first data conductive layer may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof. However, the present disclosure is not limited thereto.

[0102] The second interlayer insulating layer 108 may be disposed on the first data conductive layer. The second interlayer insulating layer 108 may cover the first data conductive layer, and may be completely disposed on the first interlayer insulating layer 107, and may be used to protect the first data conductive layer. The second interlayer insulating layer 108 may be formed to include, for example, silicon oxide (SiO x ), silicon nitride (SiN xan inorganic layer of an inorganic material such as silicon oxide (SiO) or silicon oxynitride (SiON), or a structure in which such inorganic layers are stacked may be formed.

[0103] The second data conductive layer is disposed on the second interlayer insulating layer 108. The second data conductive layer may include a first voltage line VL1, a second voltage line VL2, an alignment line AL, and a first conductive pattern CDP. A high potential voltage (or a first source voltage) supplied to the driving transistor DT may be applied to the first voltage line VL1, and a low potential voltage (or a second source voltage) supplied to the second electrode 220 may be applied to the second voltage line VL2. During the process of manufacturing the display device 10, an alignment signal required for aligning the light-emitting element 300 may be applied to the first voltage line VL1 and the second voltage line VL2.

[0104] The alignment line AL may receive an alignment signal required for aligning the light-emitting element 300 during the process of manufacturing the display device 10, and may be electrically connected to any one of the second electrodes 220 to transmit the alignment signal to the second electrode 220. Only one alignment line AL is shown in the drawings, but the present disclosure is not limited thereto. In the display device 10, a larger number of alignment lines AL may also be provided according to the number of the electrodes 210 and 220 provided on the display element layer.

[0105] The first conductive pattern CDP may be electrically connected to the first source / drain electrode DT_SD1 of the driving transistor DT through a contact hole formed in the second interlayer insulating layer 108. The first conductive pattern CDP may also be in contact with the first electrode 210 to be described later, and the driving transistor DT may transmit the first source voltage applied from the first voltage line VL1 to the first electrode 210 through the first conductive pattern CDP. At the same time, in the drawings, the second data conductive layer is shown to include one second voltage line VL2 and one first voltage line VL1, but the present disclosure is not limited thereto. The second data conductive layer may include a larger number of first voltage lines VL1 and second voltage lines VL2.

[0106] The second data conductive layer may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof. However, the present disclosure is not limited thereto.

[0107] The first planarization layer 109 is disposed on the second data conductive layer. The first planarization layer 109 may include an organic insulating material such as an organic material such as polyimide (PI), and performs a surface planarization function.

[0108] The inner bank portions 410 and 420, the plurality of electrodes 210 and 220, the outer bank portion 450, the plurality of contact electrodes 261 and 262, and the light-emitting element 300 are disposed on the first planarization layer 109. In addition, the plurality of insulating layers 510, 520, 530, and 550 may also be disposed on the first planarization layer 109.

[0109] The inner bank portions 410 and 420 are directly disposed on the first planarization layer 109. The inner bank portions 410 and 420 may include a first inner bank portion 410 and a second inner bank portion 420 disposed adjacent to the central portions of each pixel PX or sub-pixel PXn.

[0110] The first inner bank portion 410 and the second inner bank portion 420 may be disposed to be spaced apart from each other and face each other in the first direction DR1. In addition, the first inner bank portion 410 and the second inner bank portion 420 may extend in the second direction DR2, but may be spaced apart and terminated at the boundaries between the sub-pixels PXn so as not to extend to other adjacent sub-pixels PXn in the second direction DR2. Accordingly, the first inner bank portion 410 and the second inner bank portion 420 may be provided for each sub-pixel PXn to form a pattern throughout the display device 10. The inner bank portions 410 and 420 are disposed to be spaced apart from each other and face each other such that a region in which the light-emitting element 300 is disposed may be formed between the inner bank portions 410 and 420. One first inner bank portion 410 and one second inner bank portion 420 are shown in the drawings, but the present disclosure is not limited thereto. In some cases, according to the number of the electrodes 210 and 220 to be described later, a greater number of inner bank portions 410 and 420 may also be provided.

[0111] The first inner bank portion 410 and the second inner bank portion 420 may respectively have a predetermined width WB1 and WB2, and may have a structure in which at least a part thereof protrudes from the upper surface of the first planarization layer 109. The first inner bank portion 410 and the second inner bank portion 420 may respectively have the same width WB1 and WB2, the protruding portions of the first inner bank portion 410 and the second inner bank portion 420 may have inclined side surfaces, and the light emitted from the light-emitting element 300 may travel toward the inclined side surfaces of the inner bank portions 410 and 420. As will be described later, when the electrodes 210 and 220 disposed on the inner bank portions 410 and 420 include a material having a high reflectivity, the light emitted from the light-emitting element 300 may be reflected by the electrodes 210 and 220 disposed on the inclined side surfaces of the inner bank portions 410 and 420 and emitted in the upward direction of the first substrate 101. That is, the inner bank portions 410 and 420 may serve as reflection partition walls that reflect the light emitted from the light-emitting element 300 toward the upward direction while providing a region in which the light-emitting element 300 is disposed. In an exemplary embodiment, the inner bank portions 410 and 420 may include an organic insulating material such as polyimide (PI), but are not limited thereto.

[0112] A plurality of electrodes 210 and 220 are disposed on the inner dams 410 and 420 and the first planarization layer 109. The plurality of electrodes 210 and 220 may include a first electrode 210 disposed on the first inner dam 410 and a second electrode 220 disposed on the second inner dam 420.

[0113] Specifically, the first electrode 210 may be disposed to extend in the second direction DR2 in each sub-pixel PXn. However, the first electrode 210 may be disposed separately so as not to extend to other adjacent sub-pixels PXn in the second direction DR2. A part of the first electrode 210 extending in the second direction DR2 may be disposed to overlap with the outer dam 450, and the first electrode 210 may be electrically connected to the driving transistor DT at a portion where it overlaps with the outer dam 450. For example, the first electrode 210 may be in contact with the first conductive pattern CDP through a first contact hole CT1 formed in an area where it overlaps with the outer dam 450 and passing through the first planarization layer 109, and may be electrically connected to the first source / drain electrode DT_SD1 of the driving transistor DT through the first conductive pattern CDP. However, the present disclosure is not limited thereto, and the first electrode 210 may also be disposed to extend beyond other adjacent sub-pixels PXn in the second direction DR2.

[0114] The second electrode 220 may be disposed to extend in the second direction DR2 in each sub-pixel PXn. Different from the first electrode 210, the second electrode 220 may be disposed to extend to other adjacent sub-pixels PXn in the second direction DR2. That is, a connected second electrode 220 may be disposed in a plurality of sub-pixels PXn adjacent to each other in the second direction DR2. However, the present disclosure is not limited thereto. Similar to the first electrode 210, the second electrode 220 may also be disposed separately for each sub-pixel PXn so as not to extend to other adjacent sub-pixels PXn in the second direction DR2.

[0115] The second electrode 220 may partially overlap with the outer bank portion 450 at the boundary of the sub-pixels PXn adjacent in the second direction DR2, and the second electrode 220 may be electrically connected to the second voltage line VL2 or the alignment line AL in the region where it overlaps with the outer bank portion 450. For example, the second electrode 220 may be in contact with the second voltage line VL2 or the alignment line AL through a second contact hole CT2 formed in the region where it overlaps with the outer bank portion 450 and passing through the first planarization layer 109. The second electrodes 220 of the sub-pixels PXn adjacent to each other in the first direction DR1 may be electrically connected to the second voltage line VL2 or the alignment line AL through the second contact holes CT2, respectively. When the second electrode 220 is provided separately for each sub-pixel PXn, the second electrode 220 provided in each sub-pixel PXn may be electrically connected to the alignment line AL or the second voltage line VL2 through the second contact hole CT2.

[0116] Meanwhile, an embodiment in which each of the first contact hole CT1 and the second contact hole CT2 overlaps with the outer bank portion 450 has been shown in the drawings, but the present disclosure is not limited thereto. In some embodiments, the first contact hole CT1 and the second contact hole CT2 may not overlap with the outer bank portion 450 and may also be provided in the region surrounded by the outer bank portion 450.

[0117] The first electrode 210 and the second electrode 220 may be respectively provided on the first inner bank portion 410 and the second inner bank portion 420, and may be spaced apart from each other and face each other in the first direction DR1. A plurality of light-emitting elements 300 may be provided between the first inner bank portion 410 and the second inner bank portion 420, and may have at least one end electrically connected to the first electrode 210 and the second electrode 220.

[0118] In the display device 10 according to an embodiment, at least one of the first electrode 210 and the second electrode 220 may include a plurality of main electrodes and sub-electrodes arranged to be spaced apart from each other. The main electrodes and sub-electrodes included in one electrode 210 or 220 may be at least partially provided on the same inner bank portions 410 and 420, respectively, but may include portions spaced apart from each other and facing each other. In addition, the main electrode included in any one of the electrodes 210 and 220 may be spaced apart from and face the other of the electrodes 210 and 220 or the main electrode of the other of the electrodes 210 and 220.

[0119] For example, as Figure 3As shown, the second electrode 220 may include a sub - electrode 220A and a main electrode 220C. The sub - electrode 220A and the main electrode 220C may extend in the second direction DR2, respectively, and may include portions that are spaced apart from each other and face each other in the first direction DR1 on the second inner embankment 420. In the drawings, the sub - electrode 220A and the main electrode 220C of the second electrode 220 are shown spaced apart from each other and not physically connected to each other, but the present disclosure is not limited thereto. The sub - electrode 220A and the main electrode 220C may include a partially spaced - apart region therebetween, and the second electrode 220 may include a portion that partially connects the sub - electrode 220A and the main electrode 220C to each other. For its description, refer to another embodiment.

[0120] Each of the electrodes 210 and 220 may have a width smaller than that of the inner embankments 410 and 420. According to an embodiment, the width WE1 of the first electrode 210 and the widths WE2 of the sub - electrode 220A and the main electrode 220C may be smaller than the width WB1 of the first inner embankment 410 and the width WB2 of the second inner embankment 420, respectively. The first electrode 210 may be arranged to cover only one side of the first inner embankment 410 facing the second inner embankment 420, and the second electrode 220 may be arranged such that the sub - electrode 220A and the main electrode 220C cover both sides of the second inner embankment 420, respectively. The main electrode 220C of the second electrode 220 may be arranged to be spaced apart from and face the first electrode 210, and arranged to cover one side of the second inner embankment 420 facing the first inner embankment 410, and the sub - electrode 220A of the second electrode 220 may be arranged to cover the other side of the second inner embankment 420. Accordingly, at least partial regions of the first electrode 210 and the second electrode 220 may be directly disposed on the first planarization layer 109.

[0121] In addition, the interval DEB between the main electrode 220C and the sub - electrode 220A of the second electrode 220 may be smaller than the widths WB1 and WB2 of the inner embankments 410 and 420. Accordingly, even if the widths WE2 of the sub - electrode 220A and the main electrode 220C of the second electrode 220 are smaller than the width WB2 of the second inner embankment 420, at least a part of the sub - electrode 220A and the main electrode 220C may be disposed on the second inner embankment 420. Specifically, the main electrode 220C may be disposed on the inclined side surface of one side of the second inner embankment 420, and light emitted from the light - emitting element 300 may be reflected by the main electrode 220C.

[0122] The sub-electrode 220A and the main electrode 220C of the second electrode 220 may be electrically connected to the second voltage line VL2 or the alignment line AL. The sub-electrode 220A may be electrically connected to the alignment line AL, and the main electrode 220C may be electrically connected to the second voltage line VL2. As described above, during the process of manufacturing the display device 10, an alignment signal may be applied to each of the second voltage line VL2 and the alignment line AL. However, during the driving of the display device 10, the second source voltage may be applied only to the second voltage line VL2. The second electrode 220 may include the sub-electrode 220A and the main electrode 220C that are applied with the same electrical signal during the process of manufacturing the display device 10 but are applied with different electrical signals during the driving of the display device 10. The sub-electrode 220A and the main electrode 220C of the second electrode 220 may be electrodes that are distinguishable from each other. As an example, the sub-electrode 220A may be an alignment electrode to which an alignment signal is applied, and the main electrode 220C may be a driving electrode to which the second source voltage is applied while also serving as an alignment electrode.

[0123] The first electrode 210 may be formed as a single electrode and disposed on one side of the first inner embankment 410. During the process of manufacturing the display device 10, an alignment signal may be transmitted to the first electrode 210 through the first voltage line VL1, and during the driving of the display device 10, the first source voltage may be transmitted to the first electrode 210 through the first voltage line VL1. However, the present disclosure is not limited thereto, and in some embodiments, the first electrode 210 may further include at least one main electrode and sub-electrode that are distinguishable from each other (for example, see Figure 10 210A_1 and 210C_1 in). In this case, the main electrode of the first electrode 210 may be electrically connected to the first voltage line VL1 through the driving transistor DT, and another sub-electrode of the first electrode 210 may be electrically connected to another alignment line AL. Further, in the case of the first electrode 210, the sub-electrode may be an alignment electrode, and the other main electrode may be a driving electrode to which the first source voltage is applied while also serving as an alignment electrode.

[0124] In the display device 10, at least one of the first electrode 210 and the second electrode 220 may include a main electrode and a sub-electrode, and at least a portion of the main electrode and the sub-electrode may be physically spaced apart from each other such that a region where the electrodes 210 and 220 are not provided may be formed on the inner embankments 410 and 420. Further, either the main electrode or the sub-electrode may be spaced apart from and face another electrode 210 or 220, and a region where the electrodes 210 and 220 are not provided may also be formed between the inner embankments 410 and 420.

[0125] For example, the main electrode 220C of the second electrode 220 may be spaced apart from and face the first electrode 210, and the sub-electrode 220A of the second electrode 220 may be spaced apart from and face the main electrode 220C. When the first electrode 210 includes a main electrode and a sub-electrode, the main electrode of the first electrode 210 and the main electrode 220C of the second electrode 220 may be arranged to be spaced apart from each other. That is, according to an embodiment, the first electrode 210 and the second electrode 220 may not be disposed on at least a part of the upper surfaces of the first inner embankment 410 and the second inner embankment 420. The display device 10 may include a region between the main electrodes 220C of the first electrode 210 and the second electrode 220 or a region between the first inner embankment 410 and the second inner embankment 420, and a region between the main electrode 220C and the sub-electrode 220A of the second electrode 220 or an upper region of the second inner embankment 420, as a region between the electrodes 210 and 220.

[0126] The display device 10 includes light-emitting elements 300 electrically connected to different electrodes 210 and 220. The light-emitting elements 300 may be ejected onto the first electrode 210 and the second electrode 220 in a state where they are dispersed in a predetermined ink by an inkjet process, and may be aligned between the first electrode 210 and the second electrode 220 by applying an alignment signal to the first electrode 210 and the second electrode 220 to apply a dielectrophoretic force to the light-emitting elements 300. When different alignment signals are applied to the corresponding electrodes 210 and 220, an electric field may be generated between the corresponding electrodes 210 and 220. For example, when a first alignment signal is applied to the first electrode 210 and a second alignment signal is applied to the second electrode 220, an electric field may be generated by the alignment signals between the first electrode 210 and the second electrode 220. The electric field may transmit the dielectrophoretic force to the light-emitting elements 300 in the ink ejected onto the electrodes 210 and 220, and the light-emitting elements 300 may receive the dielectrophoretic force to be disposed between the electrodes 210 and 220 while their orientation directions and positions are changed.

[0127] The electric field may be generated by different alignment signals between the main electrodes 220C of the first electrode 210 and the second electrode 220, and the main electrode 220C of the second electrode 220 is spaced apart from and faces the first electrode 210. The electric field may have a potential gradient according to position. The light-emitting elements 300 may receive the dielectrophoretic force according to the potential gradient or the change amount of the potential. The potential gradient may be generated by different electrical signals so that the light-emitting elements 300 may be directed in a direction in which the light-emitting elements 300 may be disposed between the main electrodes 220C of the first electrode 210 and the second electrode 220.

[0128] On the other hand, the same second alignment signal can be applied to each of the sub-electrode 220A and the main electrode 220C of the second electrode 220, and a potential gradient or a change amount of the potential of the electric field generated between the sub-electrode 220A and the main electrode 220C can be generated in opposite directions. That is, the electric field generated between the sub-electrode 220A and the main electrode 220C can have a potential gradient toward the outward direction, such that the light-emitting element 300 is not disposed between the sub-electrode 220A and the main electrode 220C, and the light-emitting element 300 can be not disposed between the sub-electrode 220A and the main electrode 220C of the second electrode 220. A more detailed description will be provided later.

[0129] In the display device 10, at least one of the electrodes 210 and 220 can include a main electrode and a sub-electrode to guide the light-emitting element 300 not to be disposed in a region between the main electrode and the sub-electrode, and to guide the light-emitting element 300 to be disposed in a region between different electrodes 210 and 220. Specifically, the electrodes 210 and 220 can be respectively disposed on different inner embankments 410 and 420, but each of the main electrode and the sub-electrode can be disposed on the same inner embankment 410 or 420. Therefore, the light-emitting element 300 can be disposed between different inner embankments 410 and 420, but can be not disposed on the inner embankments 410 and 420.

[0130] According to an embodiment, an alignment region AA in which a light-emitting element 300 is disposed may be formed between the main electrode 220C of the first electrode 210 and the second electrode 220, and a non-alignment region NA in which the light-emitting element 300 is not disposed may be formed in a region adjacent to the electrodes 210 and 220 except for the alignment region AA. For example, the non-alignment region NA may include a first non-alignment region NA1 formed on the opposite side of the alignment region AA with respect to the first electrode 210 and a second non-alignment region NA2 formed between the main electrode 220C and the sub-electrode 220A of the second electrode 220. The alignment region AA may be formed between electrodes to which different electrical signals are applied, and the non-alignment region NA may be a region other than the alignment region AA and may be formed between electrodes to which the same electrical signal is applied and in a region where no electrode to which an electrical signal is applied is provided. As an example, the first non-alignment region NA1 may be formed on the first inner bank 410, but may be formed in a region where no electrode other than the first electrode 210 is provided, and the second non-alignment region NA2 may be formed on the second inner bank 420, but may be formed between the main electrode 220C and the sub-electrode 220A of the second electrode 220 to which the same electrical signal is applied. One alignment region AA and two non-alignment regions NA are shown formed in the drawings, but the present disclosure is not limited thereto. The number of the alignment region AA and the non-alignment region NA may vary according to the number of the inner banks 410 and 420 and the electrodes 210 and 220.

[0131] The light-emitting element 300 disposed in the alignment region AA may have both ends electrically connected to the first electrode 210 and the second electrode 220, respectively, to emit light. On the other hand, when the light-emitting element 300 is disposed in the non-alignment region NA, both ends of the light-emitting element 300 may be connected to the second electrode 220 to which the same electrical signal is applied, and thus, these light-emitting elements 300 may not emit light and may be lost. In the display device 10 according to the embodiment, the light-emitting elements 300 may be concentratedly disposed in a region where the light-emitting elements 300 can be electrically connected to different electrodes 210 and 220, and the number of the light-emitting elements 300 disposed in the non-alignment region NA and lost may be minimized. In addition, in the display device 10, the region where the electrodes 210 and 220 are disposed per unit area may be reduced, so that external light reflection of the display device 10 can be reduced.

[0132] That is, according to an embodiment, in the display device 10, the light-emitting element 300 may be disposed in a region where the inner embankments 410 and 420 are spaced apart from each other, and may not be disposed on the inner embankments 410 and 420. The first electrode 210 and the second electrode 220 respectively electrically connected to both ends of the light-emitting element 300 may be respectively disposed on the first inner embankment 410 and the second inner embankment 420. The light-emitting element 300 may be disposed between different inner embankments 410 and 420 such that both ends of the light-emitting element 300 can be electrically connected to the electrodes 210 and 220 to which different electrical signals are applied.

[0133] On the other hand, the electrodes 210 and 220 to which the same electrical signal is applied are respectively disposed on the inner embankments 410 and 420, and thus, the light-emitting element 300 may not be disposed on the inner embankments 410 and 420. In the display device 10 according to an embodiment, as described above, at least one of the electrodes 210 and 220 includes a main electrode and a sub-electrode, and thus, the alignment region AA may be formed in a region where the inner embankments 410 and 420 are spaced apart from each other and the non-alignment region NA may be formed on the inner embankments 410 and 420.

[0134] According to an embodiment, in the display device 10, at least one of the electrodes 210 and 220 may include a main electrode electrically connected to the light-emitting element 300 and a sub-electrode not electrically connected to the light-emitting element 300. As Figure 3 shown, the second electrode 220 may include a main electrode 220C electrically connected to the light-emitting element 300 and a sub-electrode 220A not electrically connected to the light-emitting element 300. During the driving of the display device 10, an electrical signal may be applied only to the main electrode 220C of the second electrode 220, and may not be applied to the sub-electrode 220A of the second electrode 220. The display device 10 according to an embodiment may include a pair of electrodes 210 and 220 provided for each sub-pixel PXn and electrically connected to the light-emitting element 300, and any one of the pair of electrodes 210 and 220 may include an electrode disposed on the same inner embankment 410 or 420 and not applied with an electrical signal.

[0135] However, the present disclosure is not limited thereto. In some embodiments, the display device 10 may further include a sub-electrode disposed on the same inner embankment 410 or 420 and applied with the same electrical signal, and an electrode disposed to be spaced apart from these sub-electrodes respectively and applied with an electrical signal different from the electrical signal applied to the sub-electrode.

[0136] In addition, the shapes of the electrodes 210 and 220 are not limited thereto. The display device 10 according to an embodiment is not particularly limited as long as it has a structure in which electrodes to which different alignment signals are applied and electrodes to which the same alignment signal is applied during the process of manufacturing the display device 10 can be sequentially disposed to be spaced apart from each other. AsFigure 3 As shown, the display device 10 may have a structure in which electrodes to which different alignment signals are applied and electrodes to which the same alignment signal is applied are sequentially arranged to be spaced apart from each other along one direction. The first electrode 210 to which different signals are applied may be disposed on one side of the main electrode 220C of the second electrode 220, and the sub-electrode 220A to which the same signal is applied may be disposed on the other side of the main electrode 220C of the second electrode 220. Similarly, the display device 10 may also have a structure in which an electrode to which the same alignment signal as the alignment signal applied to any one of the first electrode 210 and the second electrode 220 is applied is disposed between the first electrode 210 and the second electrode 220 to which different alignment signals are applied.

[0137] In some embodiments, the first electrode 210 and the second electrode 220 may further include main portions extending in the first direction DR1. In the first electrode 210, different main portions may be provided for each sub-pixel PXn, and in the second electrode 220, one main portion may extend to sub-pixels PXn adjacent to each other in the first direction DR1, such that the second electrodes 220 of the corresponding sub-pixels PXn may be electrically connected to each other through the main portions. In this case, the second electrode 220 may be electrically connected to a second voltage line VL2 in a non-display area NDA outside the display area DPA in which a plurality of pixels PX or sub-pixels PXn are provided.

[0138] Meanwhile, in the drawings, one first electrode 210 is provided for each sub-pixel PXn and a pair of second electrodes 220 each including one main electrode 220C and one sub-electrode 220A are shown, but the present disclosure is not limited thereto. In some embodiments, the number of the first electrode 210 and the second electrode 220 provided for each sub-pixel PXn may be greater than the number shown in the drawings. Each of the sub-pixels PXn of the display device 10 may include a larger number of electrodes to which the same alignment signal is applied. In addition, the first electrode 210 and the second electrode 220 provided in each sub-pixel PXn do not have to have a shape in which they extend in one direction, and the first electrode 210 and the second electrode 220 may be arranged in various structures. For example, the first electrode 210 and the second electrode 220 may have a partially curved or bent shape, and either the first electrode 210 or the second electrode 220 may be arranged to surround the other of the first electrode 210 and the second electrode 220. The first electrode 210 and the second electrode 220 are not particularly limited in terms of their arrangement structure and shape as long as at least a partial region thereof is spaced apart from each other and faces each other and thus a region in which the light-emitting element 300 will be arranged is formed between the first electrode 210 and the second electrode 220.

[0139] In an exemplary embodiment, the first electrode 210 may be an electrode separated for each sub-pixel PXn, and the second electrode 220 may be an electrode commonly connected along each sub-pixel PXn. Either the first electrode 210 or the second electrode 220 may be electrically connected to the anode electrode of the light-emitting element 300, and the other of the first electrode 210 and the second electrode 220 may be electrically connected to the cathode electrode of the light-emitting element 300. However, the first electrode 210 and the second electrode 220 are not limited thereto, and vice versa.

[0140] Each of the electrodes 210 and 220 may include a transparent conductive material. As an example, each of the electrodes 210 and 220 may include a material such as indium tin oxide (ITO), indium zinc oxide (IZO), or indium tin zinc oxide (ITZO), but is not limited thereto. In some embodiments, each of the electrodes 210 and 220 may include a conductive material having a high reflectivity. For example, each of the electrodes 210 and 220 may include a metal such as silver (Ag), copper (Cu), or aluminum (Al) as a material having a high reflectivity. In this case, each of the electrodes 210 and 220 may reflect light emitted from the light-emitting element 300 and traveling in the upward direction of each sub-pixel PXn toward the inclined side surfaces of the first inner bank 410 and the second inner bank 420.

[0141] The present disclosure is not limited thereto, and the corresponding electrodes 210 and 220 may have a structure in which one or more layers made of a transparent conductive material and one or more layers made of a metal having a high reflectivity are stacked, or may be formed to include one layer of a transparent conductive material and a metal having a high reflectivity. In an exemplary embodiment, each of the electrodes 210 and 220 may have a stacked structure of ITO / silver (Ag) / ITO / IZO or may be made of an alloy including aluminum (Al), nickel (Ni), lanthanum (La), etc.

[0142] The first insulating layer 510 is disposed on the first planarization layer 109 so as to partially cover the first electrode 210 and the second electrode 220. For example, the first insulating layer 510 may be disposed on the first planarization layer 109 and on the first electrode 210 and the second electrode 220, but may be arranged to expose portions of the upper surfaces of the first electrode 210 and the second electrode 220. Openings that partially expose the first electrode 210 and the second electrode 220 may be formed in the first insulating layer 510. The openings may expose portions of the main electrode 220C of the first electrode 210 and the second electrode 220, and the main electrode 220C of the second electrode 220 is spaced apart from the first electrode 210 and faces the first electrode 210. However, the first electrode 210 and the main electrode 220C and the sub-electrode 220A of the second electrode 220 respectively have relatively small widths WE1 and WE2, and thus, the openings may expose portions of the upper surfaces of the first inner dam portion 410 and the second inner dam portion 420. As Figure 5 shown, the openings may be formed in the first insulating layer 510 on the side where the first inner dam portion 410 and the second inner dam portion 420 face each other, and portions of the upper surfaces of the main electrode 220C of the first electrode 210 and the second electrode 220 may be exposed. At the same time, one side of the first inner dam portion 410 and the second inner dam portion 420 may also be partially exposed. The exposed first electrode 210 and the main electrode 220C may be in contact with the contact electrodes 261 and 262 to be described later, respectively.

[0143] However, the first insulating layer 510 may cover the other side of the corresponding inner dam portions 410 and 420 such that the other side of the corresponding inner dam portions 410 and 420 is not exposed. Thus, the sub-electrode 220A of the second electrode 220 may be completely covered by the first insulating layer 510. The sub-electrode 220A may not be in contact with the contact electrodes 261 and 262 to be described later.

[0144] The first insulating layer 510 may insulate the first electrode 210 and the second electrode 220 from each other while protecting the first electrode 210 and the second electrode 220. In addition, the first insulating layer 510 may prevent the light-emitting element 300 disposed on the first insulating layer 510 from directly contacting other components and being damaged by other components. However, the shape and structure of the first insulating layer 510 are not limited thereto.

[0145] In an exemplary embodiment, the first insulating layer 510 may have a step formed at a part of its upper surface between the first electrode 210 and the second electrode 220. In some embodiments, the first insulating layer 510 may include an inorganic insulating material, and a part of the upper surface of the first insulating layer 510 disposed to partially cover the first electrode 210 and the second electrode 220 may be stepped due to the step formed by the electrodes 210 and 220 disposed below the first insulating layer 510. Accordingly, a light-emitting element 300 disposed on the first insulating layer 510 between the first electrode 210 and the second electrode 220 may form an empty space between the light-emitting element 300 and the upper surface of the first insulating layer 510. The empty space may also be filled with a material constituting a second insulating layer 520 to be described later.

[0146] However, the present disclosure is not limited thereto. The first insulating layer 510 may be formed such that a part thereof disposed between the first electrode 210 and the second electrode 220 has a flat upper surface. The upper surface may extend in one direction toward the first electrode 210 and the second electrode 220, and the first insulating layer 510 may also be disposed in a region where the electrodes 210 and 220 respectively overlap with the inclined side surfaces of the first inner bank 410 and the second inner bank 420. The contact electrodes 261 and 262 may respectively contact the exposed regions of the first electrode 210 and the second electrode 220, and may stably contact the ends of the light-emitting element 300 on the flat upper surface of the first insulating layer 510.

[0147] The outer bank 450 may be disposed on the first insulating layer 510. As Figure 2 and Figure 3 shown, the outer bank 450 may be disposed at the boundary between the corresponding sub-pixels PXn. The outer bank 450 may be disposed to extend in at least a second direction DR2, and may be disposed to surround the inner banks 410 and 420 and parts of the electrodes 210 and 220 and a region where the light-emitting element 300 is disposed between the inner banks 410 and 420 and the electrodes 210 and 220. In addition, the outer bank 450 may further include a part extending in a first direction DR1, and may form a grid pattern throughout the display area DPA.

[0148] According to an embodiment, the height of the outer bank portion 450 may be greater than the heights of the inner bank portions 410 and 420. Different from the inner bank portions 410 and 420, the outer bank portion 450 may be used to prevent ink from overflowing into adjacent sub-pixels PXn during an inkjet printing process of disposing the light-emitting element 300 in the process of manufacturing the display device 10 as described later, while dividing adjacent sub-pixels PXn. That is, the outer bank portion 450 may separate the inks in which different light-emitting elements 300 are dispersed for each of the different sub-pixels PXn from each other so that the inks do not mix with each other. Similar to the inner bank portions 410 and 420, the outer bank portion 450 may include polyimide (PI), but is not limited thereto.

[0149] The light-emitting element 300 may be disposed in an alignment region AA formed between the first electrode 210 and the second electrode 220 or between the first inner bank portion 410 and the second inner bank portion 420. The light-emitting element 300 may have one end electrically connected to the first electrode 210 and the other end electrically connected to the second electrode 220 or the main electrode 220C of the second electrode 220. In an exemplary embodiment, the light-emitting element 300 may be electrically connected to the first electrode 210 and the second electrode 220 through the contact electrodes 261 and 262, respectively.

[0150] A plurality of light-emitting elements 300 may be disposed to be spaced apart from each other and may be aligned substantially parallel to each other. The interval between the light-emitting elements 300 spaced apart from each other is not particularly limited. In some cases, a plurality of light-emitting elements 300 may be disposed adjacent to each other and grouped, and a plurality of other light-emitting elements 300 may be grouped in a state where they are spaced apart from the plurality of light-emitting elements 300 by a predetermined interval, or a plurality of light-emitting elements 300 may have an uneven density and may be oriented and aligned in one direction. In addition, in an exemplary embodiment, the light-emitting element 300 may have a shape in which they extend in one direction, and the direction in which the corresponding electrodes 210 and 220 extend and the direction in which the light-emitting element 300 extends may be substantially perpendicular to each other. However, the present disclosure is not limited thereto, and the light-emitting element 300 is not perpendicular to the direction in which the corresponding electrodes 210 and 220 extend, and may also be disposed to be inclined with respect to the direction in which the corresponding electrodes 210 and 220 extend.

[0151] The light-emitting element 300 according to an embodiment may include an active layer 330, and the active layer 330 includes different materials to emit light in different wavelength bands to the outside. The display device 10 according to an embodiment may include the light-emitting element 300 that emits light in different wavelength bands. The light-emitting element 300 of the first sub-pixel PX1 may include an active layer 330 that emits light of a first color having a first wavelength in a central wavelength band, the light-emitting element 300 of the second sub-pixel PX2 may include an active layer 330 that emits light of a second color having a second wavelength in a central wavelength band, and the light-emitting element 300 of the third sub-pixel PX3 may include an active layer 330 that emits light of a third color having a third wavelength in a central wavelength band.

[0152] Accordingly, light of the first color may be emitted from the first sub-pixel PX1, light of the second color may be emitted from the second sub-pixel PX2, and light of the third color may be emitted from the third sub-pixel PX3. In some embodiments, the light of the first color may be blue light having a central wavelength band in the range of 450 nm to 495 nm, the light of the second color may be green light having a central wavelength band in the range of 495 nm to 570 nm, and the light of the third color may be red light having a central wavelength band in the range of 620 nm to 752 nm. However, the present disclosure is not limited thereto. In some cases, each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 may also include the same type of light-emitting element 300 to emit light of substantially the same color.

[0153] The light-emitting element 300 may be disposed on the first insulating layer 510 between the inner dikes 410 and 420 or between the corresponding electrodes 210 and 220. At the same time, the light-emitting element 300 may be disposed such that a partial region thereof overlaps with the corresponding electrodes 210 and 220 in the thickness direction. According to an embodiment, the length of the light-emitting element 300 may be greater than the interval DEA between the main electrodes 220C of the first electrode 210 and the second electrode 220. One end of the light-emitting element 300 may overlap with the first electrode 210 in the thickness direction to be placed on the first electrode 210, and the other end of the light-emitting element 300 may overlap with the second electrode 220 in the thickness direction to be placed on the second electrode 220. However, the present disclosure is not limited thereto, and although not shown in the drawings, at least some of the light-emitting elements 300 disposed in each sub-pixel PXn may also be disposed in a region other than the region formed between the inner dikes 410 and 420, for example, between the inner dikes 410 and 420 and the outer dike 450.

[0154] The light-emitting element 300 may include a plurality of layers disposed in a direction parallel to the upper surface of the first planarization layer 109 or the upper surface of the first substrate 101. The light-emitting element 300 of the display device 10 according to an embodiment may have a shape in which it extends in one direction, and may have a structure in which a plurality of semiconductor layers are sequentially disposed in one direction. The light-emitting element 300 may be disposed such that one direction along which the light-emitting element 300 extends is parallel to the upper surface of the first planarization layer 109, and the plurality of semiconductor layers included in the light-emitting element 300 may be sequentially disposed along a direction parallel to the upper surface of the first planarization layer 109. However, the present disclosure is not limited thereto. In some cases, when the light-emitting element 300 has another structure, the plurality of layers may also be disposed in a direction perpendicular to the upper surface of the first planarization layer 109.

[0155] The second insulating layer 520 may be partially disposed on the light-emitting element 300 disposed between the first electrode 210 and the second electrode 220. That is, the second insulating layer 520 may be disposed on the first insulating layer 510 between the first electrode 210 and the second electrode 220, and the light-emitting element 300 may be disposed between the first insulating layer 510 and the second insulating layer 520. In an exemplary embodiment, the insulating film 380 (see Figure 6 ) formed on the outer surface of the light-emitting element 300 may be in direct contact with the first insulating layer 510 and the second insulating layer 520. For example, the second insulating layer 520 may be disposed to partially surround the outer surface of the light-emitting element 300 in order to fix the light-emitting element 300 during the process of manufacturing the display device 10 while protecting the light-emitting element 300.

[0156] A part of the second insulating layer 520 disposed on the light-emitting element 300 may have a shape in which it extends in a second direction DR2 between the first electrode 210 and the second electrode 220 in a plan view. As an example, the second insulating layer 520 may form a bar-shaped or island-shaped pattern within each sub-pixel PXn.

[0157] The second insulating layer 520 may be disposed on the light-emitting element 300, but one end and the other end of the light-emitting element 300 may be exposed. The exposed ends of the light-emitting element 300 may be in contact with the contact electrodes 261 and 262, which will be described later, respectively. Such a shape of the second insulating layer 520 may be formed by performing a patterning process using a material constituting the second insulating layer 520 through a general mask process. The mask for forming the second insulating layer 520 may have a width smaller than the length of the light-emitting element 300, and both ends of the light-emitting element 300 may be exposed by patterning the material constituting the second insulating layer 520. However, the present disclosure is not limited thereto.

[0158] In addition, in an exemplary embodiment, a part of the material of the second insulating layer 520 may also be disposed between the lower surface of the light-emitting element 300 and the first insulating layer 510. The second insulating layer 520 may also be formed to fill the space between the first insulating layer 510 and the light-emitting element 300 formed during the process of manufacturing the display device 10. Accordingly, the second insulating layer 520 may be formed to surround the outer surface of the light-emitting element 300. However, the present disclosure is not limited thereto.

[0159] A plurality of contact electrodes 261 and 262 and a third insulating layer 530 may be disposed on the second insulating layer 520.

[0160] The plurality of contact electrodes 261 and 262 may have a shape in which they extend in one direction. The plurality of contact electrodes 261 and 262 may be in contact with the light-emitting element 300 and the electrodes 210 and 220, respectively, and the light-emitting element 300 may receive an electrical signal from the first electrode 210 and the second electrode 220 through the contact electrodes 261 and 262.

[0161] The contact electrodes 261 and 262 may include a first contact electrode 261 and a second contact electrode 262. The first contact electrode 261 and the second contact electrode 262 may be disposed on parts of the first electrode 210 and the second electrode 220, respectively. The first contact electrode 261 may be disposed on the first electrode 210, the second contact electrode 262 may be disposed on the main electrode 220C of the second electrode 220, and each of the first contact electrode 261 and the second contact electrode 262 may have a shape in which it extends in a second direction DR2. The first contact electrode 261 and the second contact electrode 262 may be spaced apart from each other and face each other in a first direction DR1, and may form a bar pattern in the emission region EMA of each sub-pixel PXn.

[0162] In some embodiments, the widths of the first contact electrode 261 and the second contact electrode 262 measured in one direction may be equal to or greater than the widths of the first electrode 210 and the second electrode 220 measured in one direction, respectively. The first contact electrode 261 and the second contact electrode 262 may be arranged to cover two side surfaces of the main electrode 220C of the first electrode 210 and the second electrode 220, while being in contact with one end and the other end of the light-emitting element 300, respectively. As described above, portions of the upper surfaces of the first electrode 210 and the main electrode 220C may be exposed, and the first contact electrode 261 and the second contact electrode 262 may be in contact with the exposed upper surfaces of the first electrode 210 and the main electrode 220C, respectively. For example, the first contact electrode 261 may be in contact with a portion of the first electrode 210 located on the first inner embankment 410, and the second contact electrode 262 may be in contact with a portion of the main electrode 220C located on the second inner embankment 420. In addition, in one embodiment, the first inner embankment 410 and the second inner embankment 420 exposed by the opening of the first insulating layer 510 may be in direct contact with the contact electrodes 261 and 262, respectively. The first contact electrode 261 and the second contact electrode 262 may have widths greater than those of the first electrode 210 and the main electrode 220C of the second electrode 220, respectively, and may be in contact with portions of the inner embankments 410 and 420 where the first electrode 210 and the main electrode 220C are not provided and are exposed. The interval DC between the first contact electrode 261 and the second contact electrode 262 may be smaller than the interval DEA between the first electrode 210 and the second electrode 220 or the main electrode 220C. By adjusting the interval DC therebetween, the first contact electrode 261 and the second contact electrode 262 may be in smooth contact with both ends of the light-emitting element 300, respectively.

[0163] In addition, the widths of the first contact electrode 261 and the second contact electrode 262 may be smaller than the widths WB1 and WB2 of the inner embankments 410 and 420, respectively, and the first contact electrode 261 and the second contact electrode 262 may be arranged on one side of the first inner embankment 410 and the second inner embankment 420, respectively. Therefore, the second contact electrode 262 may not be arranged on the sub-electrode 220A of the second electrode 220. The sub-electrode 220A of the second electrode 220 may be covered by the first insulating layer 510, and the second contact electrode 262 may not be in contact with the sub-electrode 220A. However, the present disclosure is not limited thereto, and in some embodiments, the first contact electrode 261 and the second contact electrode 262 may also be formed to have larger widths to cover both sides of the inner embankments 410 and 420, respectively, and the second contact electrode 262 may also be arranged on the sub-electrode 220A of the second electrode 220.

[0164] According to an embodiment, the light-emitting element 300 may have a semiconductor layer exposed on its two end surfaces in the direction in which it extends, and the first contact electrode 261 and the second contact electrode 262 may be in contact with the light-emitting element 300 on the end surfaces where the semiconductor layer is exposed. However, the present disclosure is not limited thereto. In some cases, the side surfaces at both ends of the light-emitting element 300 may be partially exposed. In the process of forming the second insulating layer 520 that covers the outer surface of the light-emitting element 300 in the process of manufacturing the display device 10, the insulating film 380 (see Figure 6 ) around the outer surface of the semiconductor layer of the light-emitting element 300 may be partially removed, and the side surface of the semiconductor layer of the light-emitting element 300 may be partially exposed to contact the first contact electrode 261 and the second contact electrode 262. One end of the light-emitting element 300 may be electrically connected to the first electrode 210 through the first contact electrode 261, and the other end of the light-emitting element 300 may be electrically connected to the second electrode 220 through the second contact electrode 262.

[0165] In the drawings, one first contact electrode 261 and one second contact electrode 262 are shown to be provided in one sub-pixel PXn, but the present disclosure is not limited thereto. The number of the first contact electrode 261 and the second contact electrode 262 may be changed according to the number of the first electrode 210 and the second electrode 220 provided in each sub-pixel PXn.

[0166] In addition, the first contact electrode 261 is provided on the first electrode 210 and the second insulating layer 520. The first contact electrode 261 may be in contact with one end of the light-emitting element 300 and the exposed upper surface of the first electrode 210. One end of the light-emitting element 300 may be electrically connected to the first electrode 210 through the first contact electrode 261.

[0167] The third insulating layer 530 is provided on the first contact electrode 261. The third insulating layer 530 may electrically insulate the first contact electrode 261 and the second contact electrode 262 from each other. The third insulating layer 530 may be provided to cover the first contact electrode 261, but may not be provided on the other end of the light-emitting element 300, so that the light-emitting element 300 can be in contact with the second contact electrode 262. The third insulating layer 530 may be in partial contact with the first contact electrode 261 and the second insulating layer 520 on the upper surface of the second insulating layer 520. The side surface of the third insulating layer 530 in the direction where the second electrode 220 is provided may be aligned with one side surface of the second insulating layer 520. In addition, the third insulating layer 530 may also be provided in a non-emitting region, for example, on the first insulating layer 510 provided on the first planarization layer 109. However, the present disclosure is not limited thereto.

[0168] The second contact electrode 262 is disposed on the second electrode 220, the second insulating layer 520, and the third insulating layer 530. The second contact electrode 262 may be in contact with the other end of the light-emitting element 300 and the exposed upper surface of the second electrode 220. The other end of the light-emitting element 300 may be electrically connected to the second electrode 220 through the second contact electrode 262.

[0169] That is, the first contact electrode 261 may be disposed between the first electrode 210 and the third insulating layer 530, and the second contact electrode 262 may be disposed on the third insulating layer 530. The second contact electrode 262 may be in partial contact with the second insulating layer 520, the third insulating layer 530, the second electrode 220, and the light-emitting element 300. One end of the second contact electrode 262 may be disposed on the third insulating layer 530. The first contact electrode 261 and the second contact electrode 262 may not be in contact with each other through the second insulating layer 520 and the third insulating layer 530. However, the present disclosure is not limited thereto, and in some cases, the third insulating layer 530 may be omitted.

[0170] The contact electrodes 261 and 262 may include a conductive material. For example, the contact electrodes 261 and 262 may include ITO, IZO, ITZO, aluminum (Al), etc. As an example, the contact electrodes 261 and 262 may include a transparent conductive material, and light emitted from the light-emitting element 300 may be transmitted through the contact electrodes 261 and 262 and travel toward the electrodes 210 and 220. Each of the electrodes 210 and 220 includes a material having a high reflectivity, and the electrodes 210 and 220 disposed on the inclined side surfaces of the inner dams 410 and 420 may reflect light incident thereon in the upward direction of the first substrate 101. However, the present disclosure is not limited thereto.

[0171] The fourth insulating layer 550 may be entirely disposed on the first substrate 101. The fourth insulating layer 550 may be used to protect the components disposed on the first substrate 101 from the external environment.

[0172] Each of the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the fourth insulating layer 550 described above may include an inorganic insulating material or an organic insulating material. In an exemplary embodiment, the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the fourth insulating layer 550 may include an inorganic insulating material such as silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y), aluminum oxide (Al2O3), or aluminum nitride (AlN). Alternatively, the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the fourth insulating layer 550 may include an organic insulating material, such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene resin, a polyphenylene sulfide resin, benzocyclobutene, a cardo resin, a silicone resin, a silsesquioxane resin, a polymethyl methacrylate, a polycarbonate, or a polymethyl methacrylate-polycarbonate synthetic resin. However, the present disclosure is not limited thereto.

[0173] Meanwhile, the light-emitting element 300 may be a light-emitting diode. Specifically, the light-emitting element 300 may be an inorganic light-emitting diode having a micron or nanoscale size and made of an inorganic material. The inorganic light-emitting diode may be aligned between two electrodes, where when an electric field is formed in a specific direction between two electrodes facing each other, polarities are formed in the two electrodes. The light-emitting element 300 may be aligned between the two electrodes by an electric field formed on the two electrodes.

[0174] The light-emitting element 300 according to an embodiment may have a shape in which it extends in one direction. The light-emitting element 300 may have a shape such as a rod shape, a wire shape, or a tube shape. In an exemplary embodiment, the light-emitting element 300 may have a cylindrical shape or a rod shape. However, the light-emitting element 300 is not limited to having the above shapes and may have various shapes. For example, the light-emitting element 300 may have a polygonal prism shape such as a cube shape, a rectangular parallelepiped shape, or a hexagonal prism shape, or a shape in which it extends in one direction but has a partially inclined outer surface. The plurality of semiconductors included in the light-emitting element 300 to be described later may have a structure in which they are sequentially arranged or stacked along one direction.

[0175] The light-emitting element 300 may include a semiconductor layer doped with impurities of any conductive type (e.g., p-type or n-type). The semiconductor layer may receive an electric signal applied from an external power source and emit the electric signal as light in a specific wavelength band.

[0176] Figure 6 is a schematic diagram of a light-emitting element according to an embodiment.

[0177] Reference Figure 6 , the light-emitting element 300 may include a first semiconductor layer 310, a second semiconductor layer 320, an active layer 330, an electrode layer 370, and an insulating film 380.

[0178] The first semiconductor layer 310 may be an n-type semiconductor. As an example, when the light-emitting element 300 emits light in a blue wavelength band, the first semiconductor layer 310 may include having the chemical formula Al xGa y In 1-x-y A semiconductor material of N (0 ≤ x ≤ 1, 0 ≤ y ≤ 1 and 0 ≤ x + y ≤ 1). For example, the semiconductor material may be one or more of AlGaInN, GaN, AlGaN, InGaN, AlN, and InN doped with an n-type dopant. The first semiconductor layer 310 may be doped with an n-type dopant. As an example, the n-type dopant may be Si, Ge, Se, Sn, etc. In an exemplary embodiment, the first semiconductor layer 310 may be made of n-GaN doped with n-type Si. The length of the first semiconductor layer 310 may be in the range of 1.5 μm to 5 μm, but is not limited thereto.

[0179] The second semiconductor layer 320 is disposed on the active layer 330 to be described later. The second semiconductor layer 320 may be a p-type semiconductor. And as an example, when the light-emitting element 300 emits light in a blue wavelength band or a green wavelength band, the second semiconductor layer 320 may include having the chemical formula Al x Ga y In 1-x-y A semiconductor material of N (0 ≤ x ≤ 1, 0 ≤ y ≤ 1 and 0 ≤ x + y ≤ 1). For example, the semiconductor material may be one or more of AlGaInN, GaN, AlGaN, InGaN, AlN, and InN doped with a p-type dopant. The second semiconductor layer 320 may be doped with a p-type dopant. As an example, the p-type dopant may be Mg, Zn, Ca, Ba, etc. In an exemplary embodiment, the second semiconductor layer 320 may be made of p-GaN doped with p-type Mg. The length of the second semiconductor layer 320 may be in the range of 0.05 μm to 0.10 μm, but is not limited thereto.

[0180] Meanwhile, in the drawings, each of the first semiconductor layer 310 and the second semiconductor layer 320 is shown configured as one layer, but the present disclosure is not limited thereto. According to some embodiments, depending on the material of the active layer 330, each of the first semiconductor layer 310 and the second semiconductor layer 320 may further include a greater number of layers, such as a cladding layer or a tensile strain barrier reduction (TSBR) layer. This will be described later with reference to other drawings.

[0181] The active layer 330 is disposed between the first semiconductor layer 310 and the second semiconductor layer 320. The active layer 330 may 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 may have a structure in which a plurality of quantum layers and a plurality of well layers are alternately stacked. The active layer 330 may emit light through the combination of electron-hole pairs according to an electrical signal applied through the first semiconductor layer 310 and the second semiconductor layer 320. As an example when the active layer 330 emits light in the blue wavelength band, the active layer 330 may include a material such as AlGaN or AlGaInN. Specifically, when the active layer 330 has a multi-quantum well structure, that is, a structure in which quantum layers and well layers are alternately stacked, the quantum layer may include a material such as AlGaN or AlGaInN, and the well layer may include a material such as GaN or AlInN. In an exemplary embodiment, the active layer 330 may include AlGaInN as the material of the quantum layer and include AlInN as the material of the well layer to emit blue light having a central wavelength band of 450 nm to 495 nm, as described above.

[0182] However, the present disclosure is not limited thereto, and the active layer 330 may have a structure in which a semiconductor material having a large bandgap and a semiconductor material having a small bandgap are alternately stacked, and may include other group III-V semiconductor materials according to the wavelength band of the emitted light. The light emitted by the active layer 330 is not limited to the light in the blue wavelength band, and in some cases, the active layer 330 may emit light in the red wavelength band and the green wavelength band. The length of the active layer 330 may be in the range of 0.05 μm to 0.10 μm, but is not limited thereto.

[0183] Meanwhile, the light emitted from the active layer 330 may be emitted not only to the outer surface of the light-emitting element 300 in the length direction, but also to both 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.

[0184] The electrode layer 370 may be an ohmic contact electrode. However, the present disclosure is not limited thereto, and the electrode layer 370 may also be a Schottky contact electrode. The light-emitting element 300 may include at least one electrode layer 370. In Figure 6 it has been shown that the light-emitting element 300 includes one electrode layer 370, but the present disclosure is not limited thereto. In some cases, the light-emitting element 300 may further include a larger number of electrode layers 370, or the electrode layer 370 may also be omitted. Even if the number of electrode layers 370 is changed or the light-emitting element 300 further includes another structure, the description of the light-emitting element 300 to be provided later may be similarly applied.

[0185] When the light-emitting element 300 is electrically connected to the electrodes 210 and 220 or the contact electrodes 261 and 262, the electrode layer 370 can reduce the resistance between the light-emitting element 300 and the electrodes 210 and 220 or the contact electrodes 261 and 262. The electrode layer 370 can include a metal having electrical conductivity. The electrode layer 370 can include at least one of aluminum (Al), titanium (Ti), indium (In), gold (Au), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO). The electrode layer 370 can include a semiconductor material doped with an n-type dopant or a p-type dopant. The electrode layer 370 can include the same material or include different materials, but is not limited thereto.

[0186] The insulating film 380 is disposed to surround the outer surfaces of the plurality of semiconductor layers 310 and 320 and the electrode layer 370. In an exemplary embodiment, the insulating film 380 can be disposed to surround at least the outer surface of the active layer 330 and can extend in one direction along which the light-emitting element 300 extends. The insulating film 380 can be used to protect these components. As an example, the insulating film 380 can be formed to surround the side surface portions of these components, but can be formed to expose both ends of the light-emitting element 300 in the longitudinal direction.

[0187] In the drawings, the insulating film 380 is shown as being formed to extend in the longitudinal direction of the light-emitting element 300 to cover the side surfaces of the first semiconductor layer 310 to the electrode layer 370, but the present disclosure is not limited thereto. The insulating film 380 can cover only some of the semiconductor layers 310 and 320 and the outer surface of the active layer 330 or only a part of the outer surface of the electrode layer 370 such that the outer surface of each electrode layer 370 can be partially exposed. In addition, the insulating film 380 can also be formed such that its upper surface is circular in cross-section in a region adjacent to at least one end of the light-emitting element 300.

[0188] The thickness of the insulating film 380 can be in the range of 10 nm to 1.0 μm, but is not limited thereto. The thickness of the insulating film 380 can preferably be about 40 nm.

[0189] The insulating film 380 can include a material having insulating properties, for example, silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum nitride (AlN), and aluminum oxide (Al2O3) or more. Thus, an electrical short circuit that may occur when the active layer 330 is in direct contact with the electrodes through which an electrical signal is transmitted to the light-emitting element 300 can be prevented. In addition, the insulating film 380 protects the outer surface of the light-emitting element 300 and can thus prevent a reduction in luminous efficiency.

[0190] 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 ejected and aligned onto the electrodes in a state where they are dispersed in the ink. Here, in order to keep the light-emitting elements 300 in a state where the light-emitting elements 300 are dispersed in the ink without aggregating with other adjacent light-emitting elements 300, a hydrophobic or hydrophilic treatment may be performed on the surface of the insulating film 380.

[0191] The light-emitting element 300 may have a length h of 1 μm to 10 μm or 2 μm to 6 μm, preferably 3 μm to 5 μm. In addition, the diameter of the light-emitting element 300 may be in the range of 300 nm to 700 nm, and the aspect ratio of the light-emitting element 300 may be 1.2 to 100. However, the present disclosure is not limited thereto, and the plurality of light-emitting elements 300 included in the display device 10 may also have different diameters depending on the composition between the active layers 330. Preferably, the diameter of the light-emitting element 300 may be about 500 nm.

[0192] As described above, the light-emitting elements 300 may be disposed between the electrodes 210 and 220, while their orientation directions and positions are changed by the electric field formed between the electrodes 210 and 220. According to an embodiment, in the display device 10, at least one of the electrodes 210 and 220 to which different electrical signals are applied may include a main electrode and a sub-electrode to which the same alignment signal is applied, respectively. For example, the display device 10 may include a first electrode 210 and a second electrode 220 to which different electrical signals are applied, and the second electrode 220 may include a sub-electrode 220A and a main electrode 220C to which the same alignment signal is applied. An alignment region AA and a non-alignment region NA may be formed between these electrodes, respectively, and the light-emitting elements 300 may be centrally disposed in the alignment region AA during the process of manufacturing the display device 10.

[0193] Figures 7 to 9 is a cross-sectional view showing some of the processes in the process of manufacturing a display device according to an embodiment. Figures 7 to 9 Schematically shows the process in the process of manufacturing the display device 10 in which the light-emitting element 300 is disposed between the main electrode 220C of the first electrode 210 and the second electrode 220.

[0194] First, refer to Figure 7, a first substrate 101 is prepared, and inner dikes 410 and 420, an outer dike 450, a first electrode 210, and a second electrode 220 are formed on the first substrate 101, and a first insulating material layer 510' covering the inner dikes 410 and 420, the first electrode 210, and the second electrode 220 is formed. The first insulating material layer 510' may be partially patterned in a subsequent process to form the first insulating layer 510 of the display device 10. The above components may be formed by a general mask process by patterning metals, inorganic materials, organic materials, etc.

[0195] As described above, the second electrode 220 may include a main electrode 220C and a sub - electrode 220A that are arranged to be spaced apart from each other. The main electrode 220C and the sub - electrode 220A may be respectively disposed on the second inner dike 420, but may be arranged to be spaced apart from each other. The description of the arrangement of other components is the same as the above description, and thus the detailed description will be omitted.

[0196] Next, an ink in which light - emitting elements 300 are dispersed is ejected onto the first electrode 210 and the second electrode 220. In some embodiments, the ink may be ejected by a printing method using an ink - jet printing device. However, the present disclosure is not limited thereto. In some cases, a slit coating method, a spraying method, etc. may be used. The light - emitting elements 300 dispersed in the ink may be dispersed in random directions without directionality on the first electrode 210 and the second electrode 220.

[0197] Next, referring to Figure 8 , an alignment signal is applied to the first electrode 210 and the second electrode 220 to generate an electric field EL in the ink in which the light - emitting elements 300 are dispersed. As described above, the first alignment signal may be applied to the first electrode 210 through a first voltage line VL1, and the first voltage line VL1 is electrically connected to the first electrode 210 through a driving transistor DT, and the second alignment signal may be applied to the second electrode 220 through a second voltage line VL2 or an alignment line AL. The second electrode 220 may include a main electrode 220C and a sub - electrode 220A that are arranged to be spaced apart from each other. The main electrode 220C may be electrically connected to the second voltage line VL2, and the sub - electrode 220A may be electrically connected to the alignment line AL. The second alignment signal may be applied to each of the main electrode 220C and the sub - electrode 220A.

[0198] An electric field EL1 and an electric field EL2 may be generated between the first electrode 210 and the main electrode 220C of the second electrode 220 and between the first electrode 210 and the sub - electrode 220A by different alignment signals (see Figure 8). The first electric field EL1 between the first electrode 210 and the main electrode 220C and the second electric field EL2 between the first electrode 210 and the sub - electrode 220A can be electric fields of different alignment signals, and potential gradients can be generated in these electric fields EL1 and EL2. The "potential gradient" can refer to the direction of change in the intensity or density of the electric field EL formed between the electrodes 210 and 220 to which the alignment signal is applied. For example, as Figure 8 shown in, the first electric field EL1 and the second electric field EL2 formed between the first electrode 210 and the main electrode 220C or the sub - electrode 220A of the second electrode 220 can have a potential gradient in the direction in which the intensity or density of these electric fields EL1 and EL2 increases in the downward direction (i.e., toward the electrodes 210 and 220). Thus, the light - emitting element 300 can receive a dielectrophoretic force along the direction pointed by the potential gradients of the first electric field EL1 and the second electric field EL2, and can be guided to be disposed between the first electrode 210 and the main electrode 220C or the sub - electrode 220A of the second electrode 220.

[0199] On the other hand, the same alignment signal can be applied to the main electrode 220C and the sub - electrode 220A of the second electrode 220, and the third electric field EL3 formed between the main electrode 220C and the sub - electrode 220A can have a potential gradient in a direction opposite to the region between the main electrode 220C and the sub - electrode 220A. The third electric field EL3 can have a potential gradient in the direction in which the intensity or density of the third electric field EL3 increases in the upward direction (i.e., toward the electrodes 210 and 220 or the upper part of the inner dams 410 and 420). Among the light - emitting elements 300 dispersed in the ink, the light - emitting elements 300 moving toward the region between the main electrode 220C and the sub - electrode 220A can receive a dielectrophoretic force toward the outside of this region through the third electric field EL3. Thus, the light - emitting elements 300 can be not disposed between the main electrode 220C and the sub - electrode 220A, and can be disposed only between the first electrode 210 and the main electrode 220C. In addition, no other electrodes are provided on the side of the first inner dam 410 opposite to the first electrode 210, so that no electric field EL is generated, and the light - emitting elements 300 can be not disposed in such a region. That is, in the display device 10, an alignment region AA in which the light - emitting elements 300 are disposed and a non - alignment region NA can be formed.

[0200] According to an embodiment, the display device 10 can include the main electrode 220C and the sub - electrode 220A to which the same alignment signal is applied, so that the light - emitting elements 300 can be centrally disposed in the alignment region AA electrically connected to the first electrode 210 and the second electrode 220, and the number of light - emitting elements 300 disposed in the non - alignment region NA and lost can be reduced.

[0201] Next, refer to Figure 9When the light-emitting element 300 is disposed between the first electrode 210 and the main electrode 220C of the second electrode 220, the ink is removed. The process of removing the ink can be performed by a general heat treatment process or a light irradiation process. In addition, in some embodiments, the process of removing the ink can be performed simultaneously with the process of applying an alignment signal to the first electrode 210 and the second electrode 220. By removing the ink in a state where an electric field EL is generated between the first electrode 210 and the second electrode 220, the light-emitting element 300 can be safely placed in the alignment region AA. Thereafter, although not shown in the drawings, a second insulating layer 520, a third insulating layer 530, contact electrodes 261 and 262, etc., which are disposed on the light-emitting element 300, the first electrode 210, and the second electrode 220, can be formed to manufacture the display device 10.

[0202] Hereinafter, a process of manufacturing the display device 10 according to an embodiment will be described with reference to other drawings.

[0203] Figure 10 is a plan view showing one sub-pixel of a display device according to another embodiment. Figure 11 is Figure 10 a cross-sectional view taken along the line Q1-Q1' of.

[0204] Refer to Figure 10 and Figure 11 In the display device 10_1 according to an embodiment, the first electrode 210_1 may further include a main electrode and a sub-electrode. The first electrode 210_1 may include a first main electrode 210C_1 and a first sub-electrode 210A_1, and the second electrode 220_1 may include a second main electrode 220C_1 and a second sub-electrode 220A_1. Figure 10 and Figure 11 The embodiment of Figure 3 is different from the embodiment of Figure 3 in that the first electrode 210_1 further includes a first main electrode 210C_1 and a first sub-electrode 210A_1 which are distinguishable from each other. Hereinafter, overlapping descriptions will be omitted, and mainly different contents from the above will be described.

[0205] In the display device 10_1, each of the electrodes 210_1 and 220_1 may include a main electrode and a sub-electrode to which the same alignment signal is applied, and the light-emitting element 300 may not be disposed between the main electrode and the sub-electrode. Similar to the embodiment of Figure 3 when the first electrode 210_1 and the second electrode 220_1 respectively include the main electrodes 210C_1 and 220C_1 and the sub-electrodes 210A_1 and 220A_1, the effect of guiding the light-emitting element 300 not to be disposed in the non-alignment region NA formed between the main electrodes 210C_1 and 220C_1 and the sub-electrodes 210A_1 and 220A_1 can be increased.

[0206] Since the description of the second electrode 220_1 is the same as the above description, the first electrode 210_1 will be described in detail. Each of the first main electrode 210C_1 and the first sub-electrode 210A_1 of the first electrode 210_1 may extend on the first inner bank portion 410_1 in the second direction DR2. The first main electrode 210C_1 and the first sub-electrode 210A_1 may partially overlap with the outer bank portion 450, respectively, and may be electrically connected to the circuit element layer disposed therebelow through the first contact hole CT1 in the overlapping portion.

[0207] Although not shown in the drawings, in an embodiment, the first main electrode 210C_1 of the first electrode 210_1 may be electrically connected to the first voltage line VL1 through the driving transistor DT, and the first sub-electrode 210A_1 of the first electrode 210_1 may be electrically connected to the first alignment line AL1. Different from Figure 4 the embodiment of, the alignment line AL may include a larger number of alignment lines, such as the first alignment line AL1 and the second alignment line AL2, and the first alignment line AL1 and the second alignment line AL2 may be electrically connected to the first sub-electrode 210A_1 and the second sub-electrode 220A_1, respectively. During the process of manufacturing the display device 10_1, alignment signals may be applied to the first main electrode 210C_1 and the first sub-electrode 210A_1 from the first voltage line VL1 and the first alignment line AL1, respectively. However, during the driving of the display device 10_1, the electrical signal for driving the display device 10_1 may be applied only to the first main electrode 210C_1, and the electrical signal may not be applied to the first sub-electrode 210A_1. That is, the first main electrode 210C_1 may be a driving electrode while serving as an alignment electrode, the first sub-electrode 210A_1 may be an alignment electrode, and during the driving of the display device 10_1, the electrical signal may not be applied to the first sub-electrode 210A_1.

[0208] In addition, the first main electrode 210C_1 and the first sub-electrode 210A_1 may be spaced apart from each other in the first direction DR1. The first main electrode 210C_1 and the first sub-electrode 210A_1 may be disposed on both sides of the first inner bank portion 410_1, respectively, and may be formed to have a predetermined width WE1. In addition, the interval DEB1 between the first main electrode 210C_1 and the first sub-electrode 210A_1 may be smaller than the width WB1 of the first inner bank portion 410_1. Similarly, the interval DEB2 between the second main electrode 220C_1 and the second sub-electrode 220A_1 may be smaller than the width WB2 of the second inner bank portion 420_1. Therefore, the first main electrode 210C_1 and the first sub-electrode 210A_1 may be disposed on the inclined side surfaces of the first inner bank portion 410_1, respectively.

[0209] The first main electrode 210C_1 of the first electrode 210_1 and the second main electrode 220C_1 of the second electrode 220_1 may be spaced apart from each other and face each other, and an alignment region AA in which the light-emitting element 300 is disposed may be formed between the first main electrode 210C_1 and the second main electrode 220C_1. The first main electrode 210C_1 may be electrically connected to the first voltage line VL1 through the driving transistor DT, and the second main electrode 220C_1 may be electrically connected to the second voltage line VL2. During the process of manufacturing the display device 10_1, an alignment signal may be applied to the first main electrode 210C_1 and the second main electrode 220C_1, and during the driving of the display device 10_1, an electrical signal for driving the display device 10_1 may be applied to the first main electrode 210C_1 and the second main electrode 220C_1.

[0210] The first sub-electrode 210A_1 and the second sub-electrode 220A_1 may be spaced apart from the first main electrode 210C_1 and the second main electrode 220C_1, respectively. The first sub-electrode 210A_1 and the second sub-electrode 220A_1 may be electrically connected to the first alignment line AL1 and the second alignment line AL2, respectively. During the process of manufacturing the display device 10_1, an alignment signal may be applied to the first sub-electrode 210A_1 and the second sub-electrode 220A_1, and during the driving of the display device 10_1, an electrical signal may not be applied to the first sub-electrode 210A_1 and the second sub-electrode 220A_1.

[0211] Figure 12 is a schematic diagram showing the electric field formed between the electrodes during the process of manufacturing Figure 10 the display device.

[0212] Reference Figure 12 FIG., during the process of manufacturing the display device 10_1, a first alignment signal and a second alignment signal may be applied to the first electrode 210_1 and the second electrode 220_1, respectively. Electric fields EL1 and EL2 may be generated between the first electrode 210_1 and the second electrode 220_1 by different alignment signals, and a potential gradient toward the region between the first electrode 210_1 and the second electrode 220_1 may be generated in the electric fields EL1 and EL2. Therefore, the light-emitting elements 300 dispersed in the ink may be disposed between the first electrode 210_1 and the second electrode 220_1.

[0213] However, in the third electric field EL3 formed between the first main electrode 210C_1 and the first sub - electrode 210A_1 of the first electrode 210_1 and between the second main electrode 220C_1 and the second sub - electrode 220A_1 of the second electrode 220_1, an outward - directed potential gradient can be generated towards the regions between the first main electrode 210C_1 and the first sub - electrode 210A_1 and between the second main electrode 220C_1 and the second sub - electrode 220A_1. Therefore, the light - emitting element 300 can be guided not to be disposed between the first main electrode 210C_1 and the first sub - electrode 210A_1 of the first electrode 210_1 and between the second main electrode 220C_1 and the second sub - electrode 220A_1 of the second electrode 220_1, and can be guided to be concentratedly disposed between the first main electrode 210C_1 and the second main electrode 220C_1. According to an embodiment, a first non - alignment region NA1 can be formed between the first electrodes 210_1, a second non - alignment region NA2 can be formed between the second electrodes 220_1, and an alignment region AA can be formed between the first main electrode 210C_1 and the second main electrode 220C_1. According to an embodiment, the non - alignment region NA can be formed on the first inner bank 410_1 and the second inner bank 420_1 in a region where the light - emitting element 300 is not disposed, and can partially overlap with a region where the main electrodes 210C_1 and 220C_1 and the sub - electrodes 210A_1 and 220A_1 are spaced apart from each other. As described above, in the region where the main electrodes 210C_1 and 220C_1 and the sub - electrodes 210A_1 and 220A_1 are spaced apart from each other, the third electric field EL3 can be generated by the same electrical signal, and thus, the light - emitting element 300 can be not disposed. The region where the light - emitting element 300 is not disposed can overlap with a region where the main electrodes 210C_1 and 220C_1 and the sub - electrodes 210A_1 and 220A_1 are spaced apart from each other and are simultaneously formed on at least the first inner bank 410_1 and the second inner bank 420_1. The description of other components is the same as the above description, and thus, the detailed description will be omitted.

[0214] Meanwhile, the sub - electrodes 210A_1 and 220A_1 of the corresponding electrodes 210_1 and 220_1 may not be electrically connected to the light - emitting element 300, and no electrical signal may be applied to the sub - electrodes 210A_1 and 220A_1 during the driving of the display device 10_1. However, the sub - electrodes 210A_1 and 220A_1 may be in a state where they are electrically connected to the alignment line AL, but in some embodiments, the sub - electrodes 210A_1 and 220A_1 of the corresponding electrodes 210_1 and 220_1 may be partially patterned to be electrically disconnected from other lines.

[0215] Figure 13It is a plan view showing a sub - pixel of a display device according to another embodiment.

[0216] Reference Figure 13 , in the display device 10_2 according to an embodiment, the sub - electrodes 210A_2 and 220A_2 of the corresponding electrodes 210_2 and 220_2 may be electrically disconnected from the alignment line AL. In the corresponding sub - electrodes 210A_2 and 220A_2, the portion where the contact holes connected to the alignment line AL are located and the portion provided on the inner embankment parts 410_2 and 420_2 may be disconnected from each other, and the sub - electrodes 210A_2 and 220A_2 may be kept as floating electrodes. Figure 13 The display device 10_2 is different from the display device 10_1 according to Figure 10 an embodiment in that the sub - electrodes 210A_2 and 220A_2 are kept as floating electrodes. Hereinafter, overlapping descriptions will be omitted, and the sub - electrodes 210A_2 and 220A_2 will be described in detail.

[0217] The main electrodes 210C_2 and 220C_2 of the corresponding electrodes 210_2 and 220_2 may be electrically connected to the first voltage line VL1 or the second voltage line VL2 respectively instead of the alignment line AL, and may be electrically connected to the light - emitting element 300. On the other hand, the sub - electrodes 210A_2 and 220A_2 of the corresponding electrodes 210_2 and 220_2 may be electrically connected to the alignment line AL so that no electrical signal may be applied to the sub - electrodes 210A_2 and 220A_2 during the driving of the display device 10_2. Therefore, the corresponding sub - electrodes 210A_2 and 220A_2 may be patterned in a portion CB (see Figure 13 ) spaced apart from the contact holes connected to the alignment line AL. For example, the first sub - electrode 210A_2 may be patterned in a portion spaced apart from the first contact hole CT1, the second sub - electrode 220A_2 may be patterned in a portion spaced apart from the second contact hole CT2, and the first sub - electrode 210A_2 provided on the first inner embankment part 410_2 and the second sub - electrode 220A_2 provided on the second inner embankment part 420_2 may be kept as floating electrodes respectively.

[0218] The portions disconnected from the first sub - electrode 210A_2 and the second sub - electrode 220A_2 may form electrode segments FE1_2 and FE2_2 that are respectively connected to the alignment lines AL through contact holes CT1 and CT2. The first electrode segment FE1_2 may be spaced apart from the first sub - electrode 210A_2 in the second direction DR2 and may be electrically connected to the first alignment line AL1 through the first contact hole CT1. The second electrode segment FE2_2 may be spaced apart from the second sub - electrode 220A_2 in the second direction DR2 and may be electrically connected to the second alignment line AL2 through the second contact hole CT2. The electrode segments FE1_2 and FE2_2 and the portions CB where the sub - electrodes 210A_2 and 220A_2 are spaced apart from each other may be traces formed during the process of manufacturing the display device 10_2 after the light - emitting elements 300 are aligned. After the light - emitting elements 300 are aligned, the alignment lines AL may be electrically disconnected from the corresponding sub - electrodes 210A_2 and 220A_2 and may be used as lines to which other signals are applied.

[0219] In addition, since the corresponding sub - electrodes 210A_2 and 220A_2 are kept as floating electrodes without applying other electrical signals thereto, when the corresponding main electrodes 210C_2 and 220C_2 are partially disconnected, the corresponding sub - electrodes 210A_2 and 220A_2 may also be used as repair electrodes capable of repairing the partial disconnection of the main electrodes 210C_2 and 220C_2. However, the present disclosure is not limited thereto.

[0220] In the display device 10, the arrangement and number of electrodes are not particularly limited as long as the electrodes to which the same alignment signal is applied are arranged adjacent to each other such that an unaligned region NA can be formed therebetween. In some embodiments, the display device 10 includes a larger number of inner embankments such that an unaligned region NA can be formed on the inner embankments using only the electrodes to which electrical signals are applied during the driving of the display device 10.

[0221] Figure 14 is a plan view showing a sub - pixel of a display device according to still another embodiment.

[0222] Reference Figure 14 , according to an embodiment, the display device 10_3 may include a plurality of first electrodes 210_3 and a plurality of second electrodes 220_3 disposed between the plurality of first electrodes 210_3. The corresponding first electrodes 210_3 and the corresponding second electrodes 220_3 may be electrically connected to a first voltage line VL1 and a second voltage line VL2, respectively. That is, the corresponding first electrodes 210_3 and the corresponding second electrodes 220_3 may be main electrodes.

[0223] In the display device 10_3, an alignment region AA_3 in which the light-emitting elements 300 are disposed may be formed between a plurality of inner embankment portions 410_3, 420_3, and 430_3, and a non-alignment region NA_3 in which the light-emitting elements 300 are not disposed may be formed on the inner embankment portions 410_3, 420_3, and 430_3. According to an embodiment, the display device 10_3 may include a greater number of inner embankment portions 410_3, 420_3, and 430_3, and the first electrode 210_3 and the second electrode 220_3 may be respectively disposed on the inner embankment portions 410_3, 420_3, and 430_3.

[0224] The display device 10_3 may include three inner embankment portions 410_3, 420_3, and 430_3, namely, a first inner embankment portion 410_3, a second inner embankment portion 420_3, and a third inner embankment portion 430_3. The first inner embankment portion 410_3, the second inner embankment portion 420_3, and the third inner embankment portion 430_3 may have a shape in which they extend in the second direction DR2 and may be spaced apart from each other in the first direction DR1. The second inner embankment portion 420_3 may be disposed between the first inner embankment portion 410_3 and the third inner embankment portion 430_3, and the first inner embankment portion 410_3, the second inner embankment portion 420_3, and the third inner embankment portion 430_3 may be sequentially disposed along the first direction DR1 in each sub-pixel PXn.

[0225] A plurality of first electrodes 210_3 may be respectively disposed on the first inner embankment portion 410_3 and the third inner embankment portion 430_3. The width WE1 of the first electrode 210_3 may be smaller than the widths WB1 and WB3 of the first inner embankment portion 410_3 and the third inner embankment portion 430_3, and the first electrode 210_3 may be respectively disposed on a side of the first inner embankment portion 410_3 and the third inner embankment portion 430_3 facing the second inner embankment portion 420_3. Each of the first electrodes 210_3 may extend in the second direction DR2 and may be electrically connected to the first voltage line VL1 through the first contact hole CT1. Since no other electrodes are disposed on the other sides of the first inner embankment portion 410_3 and the third inner embankment portion 430_3, first non-alignment regions NA1_3 and third non-alignment regions NA3_3 may be respectively formed between different first electrodes 210_3 and the other sides of the first inner embankment portion 410_3 and the third inner embankment portion 430_3.

[0226] The widths WE2 of the plurality of second electrodes 220_3 may be smaller than the width WB2 of the second inner bank 420_3, and the plurality of second electrodes 220_3 may be disposed on the second inner bank 420_3. Two different second electrodes 220_3 may be spaced apart from each other in the first direction DR1 and may be respectively disposed on both sides of the second inner bank 420_3. The second electrode 220_3 may extend in the second direction DR2 and may be electrically connected to the second voltage line VL2 through the second contact hole CT2. The same alignment signal may be applied to the second electrode 220_3 through the second voltage line VL2, and a second misalignment region NA2_3 where the light-emitting element 300 is not disposed may be formed between the second electrodes 220_3.

[0227] The first electrode 210_3 and the second electrode 220_3 may be respectively disposed on one side of the first inner bank 410_3, the second inner bank 420_3, and the third inner bank 430_3. The first electrode 210_3 disposed on the first inner bank 410_3 and the second electrode 220_3 disposed on one side of the second inner bank 420_3 may be spaced apart from each other and face each other, and the first electrode 210_3 disposed on the third inner bank 430_3 and the second electrode 220_3 disposed on the other side of the second inner bank 420_3 may be spaced apart from each other and face each other. Different alignment signals may be applied to the first electrode 210_3 disposed on the first inner bank 410_3, the second electrode 220_3 disposed on one side of the second inner bank 420_3, the first electrode 210_3 disposed on the third inner bank 430_3, and the second electrode 220_3 disposed on the other side of the second inner bank 420_3, and a first alignment region AA1_3 and a second alignment region AA2_3 may be respectively formed between the first electrode 210_3 disposed on the first inner bank 410_3 and the second electrode 220_3 disposed on one side of the second inner bank 420_3 and between the first electrode 210_3 disposed on the third inner bank 430_3 and the second electrode 220_3 disposed on the other side of the second inner bank 420_3.

[0228] The light-emitting element 300 may include a first light-emitting element 300A disposed in the first alignment region AA1_3 and a second light-emitting element 300B disposed in the second alignment region AA2_3. The first light-emitting element 300A and the second light-emitting element 300B may be respectively electrically connected to the first electrode 210_3 and the second electrode 220_3. The contact electrodes 261_3 and 262_3 may be respectively disposed on the first electrode 210_3 and the second electrode 220_3. The first light-emitting element 300A and the second light-emitting element 300B may be respectively electrically connected to different first electrodes 210_3 and second electrodes 220_3 and may be connected in parallel with each other by separately receiving electrical signals.

[0229] The first contact electrode 261_3 may be arranged to overlap with the first electrode 210_3 disposed on the first inner bank portion 410_3 and the third inner bank portion 430_3, and the second contact electrode 262_3 may be arranged to overlap with the second electrode 220_3 disposed on one side and the other side of the second inner bank portion 420_3.

[0230] In the present embodiment, the second electrodes 220_3 physically spaced apart from each other are disposed on one second inner bank portion 420_3, and thus, the second non-alignment region NA2_3 may be formed on the second inner bank portion 420_3. The corresponding first electrode 210_3 and the corresponding second electrode 220_3 may be electrically connected to the first voltage line VL1 and the second voltage line VL2, and may be main electrodes to which an electrical signal for driving the display device 10_3 is applied. Since the display device 10_3 includes a greater number of inner bank portions 410_3, 420_3, and 430_3, even if the display device 10_3 does not include sub-electrodes, non-alignment regions NA_3 may be formed on the inner bank portions 410_3, 420_3, and 430_3.

[0231] Meanwhile, as described above, the sub-electrodes are disposed on the other side of the first inner bank portion 410_3 where the first electrode 210_3 is not disposed, such that the effect of the light-emitting element 300 not being disposed between the sub-electrodes and the first electrode 210_3 can be increased.

[0232] Figure 15 is a plan view showing one sub-pixel of a display device according to another embodiment.

[0233] Reference Figure 15 , in the display device 10_4 according to an embodiment, the first electrode 210_4 may further include a first sub-electrode 210A_4. Accordingly, each of the first main electrode 210C_4 and the first sub-electrode 210A_4 may be disposed on the first inner bank portion 410_4 and the third inner bank portion 430_4. The first non-alignment region NA1_4 and the third non-alignment region NA3_4 may be formed between the first main electrode 210C_4 and the first sub-electrode 210A_4 disposed on the first inner bank portion 410_4 and between the first main electrode 210C_4 and the first sub-electrode 210A_4 disposed on the third inner bank portion 430_4, respectively. Figure 15 The display device 10_4 of Figure 14 differs from the display device 10_3 of the embodiment according to Figure 10 and Figure 14a combination of embodiments, and its detailed description is the same as the above description. For example, the description of the alignment region AA_4 including the first alignment region AA1_4 and the second alignment region AA2_4, the misalignment region NA_4 including the second misalignment region NA2_4, the second electrode 220_4 including the second main electrode 220C_4 and the second sub-electrode 220A_4, and the first contact electrode 261_4 and the second contact electrode 262_4 is substantially the same as the above description.

[0234] Figure 16 is a plan view showing a sub-pixel of a display device according to still another embodiment.

[0235] Reference Figure 16 , in the display device 10_5 according to an embodiment, a larger number of inner embankment portions may be provided between the first inner embankment portion 410_5 and the second inner embankment portion 420_5, and a larger number of electrodes may also be provided between the first electrode 210_5 and the second electrode 220_5. The display device 10_5 may include a larger number of electrodes and inner embankment portions, and thus may include a larger number of alignment regions AA_5 and misalignment regions NA_5 for each sub-pixel PXn. Figure 16 The display device 10_5 Figure 10 differs from the display device 10_1 according to an embodiment

[0236] in terms of the number of inner embankment portions and electrodes. Hereinafter, overlapping descriptions will be omitted, and mainly the differences from the above will be described.

[0237] The first electrode 210_5 and the second electrode 220_5 may respectively include a main electrode 210C_5 and 220C_5 and sub - electrodes 210A_5 and 220A_5. The main electrodes 210C_5 and 220C_5 and the sub - electrodes 210A_5 and 220A_5 may be respectively disposed on both sides of the first inner bank portion 410_5 and the second inner bank portion 420_5, and may be arranged to be spaced apart from each other in the first direction DR1. Their descriptions are the same as those above, so detailed descriptions will be omitted.

[0238] The third electrode 230_5 may be disposed on the third inner bank portion 430_5. According to an embodiment, the display device 10_5 may include a plurality of third electrodes 230_5 for each sub - pixel PXn disposed on both sides of the third inner bank portion 430_5. As shown in the drawings, the plurality of third electrodes 230_5 may extend in the second direction DR2 and may be spaced apart from each other in the first direction DR1. Any one of the third electrodes 230_5 may be disposed on one side of the third inner bank portion 430_5, and the other of the third electrodes 230_5 may be disposed on the other side of the third inner bank portion 430_5. The third electrode 230_5 may extend in the second direction DR2 and may be electrically connected to the alignment line AL or the first voltage line VL1 disposed therebelow through a third contact hole CT3 at a position where the alignment line AL or the first voltage line VL1 overlaps with the outer bank portion 450. That is, the third electrode 230_5 may have substantially the same shape as the first electrode 210_5. In the drawings, the third electrode 230_5 has been shown to be separated between sub - pixels PXn (not shown) adjacent in the second direction DR2, but the present disclosure is not limited thereto, and similar to the second electrode 220_5, the third electrode 230_5 may be arranged to extend to sub - pixels PXn adjacent in the second direction DR2.

[0239] The fourth electrode 240_5 may be disposed on the fourth inner bank portion 440_5. Similar to the third electrode 230_5, for each sub-pixel PXn, a plurality of fourth electrodes 240_5 may be disposed on both sides of the fourth inner bank portion 440_5. As shown in the drawings, the plurality of fourth electrodes 240_5 may extend in the second direction DR2 and may be spaced apart from each other in the first direction DR1. Any one of the fourth electrodes 240_5 may be disposed on one side of the fourth inner bank portion 440_5, and another one of the fourth electrodes 240_5 may be disposed on the other side of the fourth inner bank portion 440_5. The fourth electrode 240_5 may extend in the second direction DR2 and may be electrically connected through a fourth contact hole CT4 to an alignment line AL or a second voltage line VL2 disposed therebelow, the fourth contact hole CT4 being at a position where the alignment line AL or the second voltage line VL2 overlaps with the outer bank portion 450. That is, the fourth electrode 240_5 may have substantially the same shape as the second electrode 220_5. In the drawings, the fourth electrode 240_5 is shown as extending beyond an adjacent sub-pixel PXn (not shown) in the second direction DR2, but the present disclosure is not limited thereto, and similar to the first electrode 210_5, the fourth electrode 240_5 may be disposed to be separated between adjacent sub-pixels PXn in the second direction DR2.

[0240] The plurality of third electrodes 230_5 and fourth electrodes 240_5 may also be disposed to be spaced apart from each other on the same inner bank portions (e.g., the third inner bank portion 430_5 and the fourth inner bank portion 440_5), and the same electrical signal may be applied to the plurality of third electrodes 230_5 and fourth electrodes 240_5, respectively. Accordingly, a misalignment region NA_5 may be formed between the plurality of third electrodes 230_5 and fourth electrodes 240_5.

[0241] The display device 10_5 according to an embodiment includes a greater number of inner bank portions and electrodes, and thus may include a greater number of alignment regions AA_5 and misalignment regions NA_5. The alignment region AA_5 may include a first alignment region AA1_5, a second alignment region AA2_5, and a third alignment region AA3_5. The first alignment region AA1_5 is a region between the first inner bank portion 410_5 and the fourth inner bank portion 440_5 or between the first electrode 210_5 and the fourth electrode 240_5, the second alignment region AA2_5 is a region between the second inner bank portion 420_5 and the third inner bank portion 430_5 or between the second electrode 220_5 and the third electrode 230_5, and the third alignment region AA3_5 is a region between the third inner bank portion 430_5 and the fourth inner bank portion 440_5 or between the third electrode 230_5 and the fourth electrode 240_5.

[0242] In addition, misalignment regions NA_5 may be formed on each of the inner dikes 410_5, 420_5, 430_5, and 440_5, and may include a first misalignment region NA1_5 and a second misalignment region NA2_5 formed respectively between the main electrodes 210C_5 and 220C_5 and the sub - electrodes 210A_5 and 220A_5 of the first electrode 210_5 and the second electrode 220_5. In addition, the misalignment region NA_5 may further include a third misalignment region NA3_5 formed between the third electrodes 230_5 and a fourth misalignment region NA4_5 formed between the fourth electrodes 240_5.

[0243] The light - emitting element 300 may include a first light - emitting element 300A disposed in the first alignment region AA1_5 and having both ends electrically connected to the first electrode 210_5 and the fourth electrode 240_5, a second light - emitting element 300B disposed in the second alignment region AA2_5 and having both ends electrically connected to the second electrode 220_5 and the third electrode 230_5, and a third light - emitting element 300C disposed in the third alignment region AA3_5 and having both ends electrically connected to the third electrode 230_5 and the fourth electrode 240_5.

[0244] The third contact electrode 263_5 and the fourth contact electrode 264_5 may be respectively disposed on the third electrode 230_5 and the fourth electrode 240_5. The third contact electrode 263_5 and the fourth contact electrode 264_5 may respectively have substantially the same shape as the first contact electrode 261_5 and the second contact electrode 262_5. The third contact electrode 263_5 and the fourth contact electrode 264_5 may be respectively formed to have a width larger than that of the third electrode 230_5 and the fourth electrode 240_5, and may be disposed to respectively cover the third electrode 230_5 and the fourth electrode 240_5. However, different from the first contact electrode 261_5 and the second contact electrode 262_5, the third contact electrode 263_5 and the fourth contact electrode 264_5 may be respectively disposed on both sides of the third inner dike 430_5 and the fourth inner dike 440_5 so as to respectively correspond to the third electrode 230_5 and the fourth electrode 240_5. However, the present disclosure is not limited thereto.

[0245] One end of the first light-emitting element 300A and the second light-emitting element 300B can be electrically connected to the first main electrode 210C_5 and the second main electrode 220C_5, respectively, and the other end of the first light-emitting element 300A and the second light-emitting element 300B can be electrically connected to the fourth electrode 240_5 and the third electrode 230_5, respectively. Both ends of the third light-emitting element 300C can be electrically connected to the third electrode 230_5 and the fourth electrode 240_5, respectively. In the display device 10_5 according to the embodiment, the third electrode 230_5 and the fourth electrode 240_5 can be main electrodes electrically connected to the light-emitting element 300. The first source voltage or the second source voltage can be transmitted to the third electrode 230_5 and the fourth electrode 240_5 through the third contact hole CT3 and the fourth contact hole CT4, respectively. Even during the process of manufacturing the display device 10_5, the same signal can be applied to each of the plurality of third electrodes 230_5 and fourth electrodes 240_5, and a third electric field EL3 having an electric potential gradient toward the outward direction can be generated in each of the regions between the plurality of third electrodes 230_5 and fourth electrodes 240_5.

[0246] Meanwhile, the third electrode 230_5 and the fourth electrode 240_5 are electrically connected to the driving transistor DT or the second voltage line VL2, respectively, and thus, the first source voltage or the second source voltage can be applied to the third electrode 230_5 and the fourth electrode 240_5, respectively. In this case, the electrical signals for driving the light-emitting elements 300A, 300B, and 300C provided in the corresponding alignment region AA_5 can be transmitted from the first electrode 210_5, the second electrode 220_5, the third electrode 230_5, and the fourth electrode 240_5 to the light-emitting elements 300A, 300B, and 300C, respectively, and the light-emitting elements 300A, 300B, and 300C can be connected in parallel with each other. On the other hand, the third electrode 230_5 and the fourth electrode 240_5 are connected to the alignment line AL, respectively, such that during the driving of the display device 10_5, electrical signals may not be applied to the third electrode 230_5 and the fourth electrode 240_5. In this case, the electrical signals can be applied to the light-emitting elements 300A, 300B, and 300C provided in the corresponding alignment region AA_5 through the first electrode 210_5 and the second electrode 220_5, and the third electrode 230_5 and the fourth electrode 240_5 can be electrodes for transmitting electrical signals. The light-emitting elements 300A, 300B, and 300C provided in the corresponding alignment region AA_5 can be connected in series with each other.

[0247] According to an embodiment, the display device 10_5 includes a larger number of electrodes, and thus, the number of light-emitting elements 300 provided in each sub-pixel PXn can be increased, and the light-emitting elements 300 are connected in series with each other according to the connection of the third electrode 230_5 and the fourth electrode 240_5, so that the light efficiency can be improved.

[0248] Figure 17 and Figure 18 is a plan view showing a sub-pixel of a display device according to another embodiment.

[0249] Reference Figure 17 , the display device 10_6 according to an embodiment may include a larger number of inner embankment portions 410_6, 420_6, 430_6, and 440_6, and also includes a third electrode 230_6 and a fourth electrode 240_6, and the first electrode 210_6 and the second electrode 220_6 may include only main electrodes without sub-electrodes. Figure 17 The display device 10_6 of Figure 16 is different from the display device 10_5 according to the embodiment of Figure 16 in that the sub-electrodes of the first electrode 210_6 and the second electrode 220_6 are omitted. Other components are substantially the same as those of the embodiment of

[0250] Reference Figure 18 , in the display device 10_7 according to an embodiment, the third electrode 230_7 and the fourth electrode 240_7 may be electrically disconnected from the alignment line AL. The third electrode 230_7 and the fourth electrode 240_7 may be respectively provided on the third inner embankment portion 430_7 and the fourth inner embankment portion 440_7, may be disconnected from the portions where the contact holes CT3 and CT4 connected to the alignment line AL are located, and may be kept as floating electrodes. During the process of manufacturing the display device 10_7, the third electrode 230_7 and the fourth electrode 240_7 may be electrically connected to the alignment line AL through the third contact hole CT3 and the fourth contact hole CT4, so that an alignment signal can be applied to the third electrode 230_7 and the fourth electrode 240_7. Thereafter, after the light-emitting element 300 is provided, the third electrode 230_7 and the fourth electrode 240_7 may be in a portion CB where they do not overlap with the outer embankment portion 450 (see Figure 18( ) is patterned and can be maintained as a floating electrode that is not directly electrically connected to the alignment line AL. In addition, portions electrically connected to the alignment line AL through the third contact hole CT3 and the fourth contact hole CT4 can form electrode segments FE3_7 and FE4_7, which can be spaced apart from the third electrode 230_7 and the fourth electrode 240_7, respectively. During the driving of the display device 10_7, an electrical signal is not directly applied to the third electrode 230_7 and the fourth electrode 240_7, and the electrical signal for driving the display device 10_7 can be applied only to the first electrode 210_7 and the second electrode 220_7.

[0251] In addition, the first contact electrode 261_7 and the second contact electrode 262_7 can be in contact with one end of the first light-emitting element 300A and the second light-emitting element 300B, respectively. On the other hand, the third contact electrode 263_7 and the fourth contact electrode 264_7 can be formed to have widths larger than those of the first contact electrode 261_7 and the second contact electrode 262_7, respectively, and can be in contact with the light-emitting elements 300 provided at other positions. For example, the third contact electrode 263_7 can be in contact with the other end of the second light-emitting element 300B and one end of the third light-emitting element 300C, and the fourth contact electrode 264_7 can be in contact with the other end of the first light-emitting element 300A and the other end of the third light-emitting element 300C.

[0252] Since the third electrode 230_7 and the fourth electrode 240_7 are not directly electrically connected to the alignment line AL, the electrical signals applied to the first electrode 210_7 and the second electrode 220_7 can flow through the light-emitting elements 300A, 300B, and 300C and the contact electrodes 261_7, 262_7, 263_7, and 264_7. Accordingly, the plurality of first light-emitting elements 300A, second light-emitting elements 300B, and third light-emitting elements 300C can be connected in series with each other. Figure 18 The display device 10_7 of Figure 17 is different from the display device 10_6 according to the embodiment of Figure 13 and Figure 17 in that the third electrode 230_7 and the fourth electrode 240_7 are maintained as floating electrodes. This embodiment is

[0253] Meanwhile, in the misalignment regions NA where the light-emitting elements 300 are not provided, a first misalignment region NA1 and a second misalignment region NA2 respectively located on the first inner bank portion 410 and the second inner bank portion 420 may be located at the outermost sides with respect to the center of each sub-pixel PXn. The first misalignment region NA1 and the second misalignment region NA2 may be formed adjacent to an outer bank portion 450 extending in the second direction DR2, and the shape or position of the outer bank portion 450 may determine the unit area of each sub-pixel PXn. In an embodiment, the display device 10 includes inner bank portions having different widths, and thus, the area occupied by each sub-pixel PXn can be reduced.

[0254] Figure 19 is a plan view showing a sub-pixel of a display device according to another embodiment. Figure 20 is Figure 19 an enlarged view of a portion Q2 of Figure 21 is a cross-sectional view taken along Figure 19 line Q3-Q3' of

[0255] Refer to Figures 19 to 21 , the display device 10_8 according to an embodiment may include inner bank portions having different widths. For example, the width WB1 of the first inner bank portion 410_8 and the second inner bank portion 420_8 may be smaller than the width WB4 of the third inner bank portion 430_8 and the fourth inner bank portion 440_8. Figures 19 to 21 The display device 10_8 of Figure 16 differs from the display device 10_5 according to the embodiment of

[0256] in that the inner bank portions have different widths. Hereinafter, overlapping descriptions will be omitted, and the content different from the above will be mainly described.

[0257] With respect to the central portion of each sub-pixel PXn, the first inner bank portion 410_8 and the second inner bank portion 420_8 can be disposed outside each sub-pixel PXn as compared with the third inner bank portion 430_8 and the fourth inner bank portion 440_8. Accordingly, the third alignment region AA3_8 can be formed adjacent to the central portion of the sub-pixel PXn, and the first alignment region AA1_8 and the second alignment region AA2_8 can be formed outside the sub-pixel PXn. Similarly, the misalignment regions NA_8 formed according to the arrangement of the inner bank portions can include a third misalignment region NA3_8 and a fourth misalignment region NA4_8 adjacent to the central portion of the sub-pixel PXn, and a first misalignment region NA1_8 and a second misalignment region NA2_8 formed outside the sub-pixel PXn.

[0258] Different from the third inner bank portion 430_8 and the fourth inner bank portion 440_8, the alignment region AA_8 in which the light-emitting element 300 is disposed can be formed only on one side of the first inner bank portion 410_8 and the second inner bank portion 420_8, and the misalignment region NA_8 in which the light-emitting element 300 is not disposed can be formed on the other side of the first inner bank portion 410_8 and the second inner bank portion 420_8.

[0259] According to an embodiment, in the display device 10_8, the width WB1 of the first inner bank portion 410_8 and the second inner bank portion 420_8 can be smaller than the width WB4 of the third inner bank portion 430_8 and the fourth inner bank portion 440_8. As the width WB1 of the first inner bank portion 410_8 and the second inner bank portion 420_8 becomes smaller, the width of the misalignment regions such as the first misalignment region NA1_8 and the second misalignment region NA2_8 formed outside the sub-pixel PXn can become smaller. Accordingly, in the display device 10_8, the area of the region in each sub-pixel PXn where the light-emitting element 300 is not disposed can be minimized, and the area occupied by each sub-pixel PXn can be reduced.

[0260] In addition, as the widths WB1 of the first inner bank portion 410_8 and the second inner bank portion 420_8 become smaller, various modifications can be made to other electrodes, the intervals between other electrodes, and the like. As an example, the width WE1 of the first electrode 210_8 and the second electrode 220_8 can be smaller than the width WE4 of the third electrode 230_8 and the fourth electrode 240_8, and the interval DEB1 between the first sub-electrode 210A_8 and the first main electrode 210C_8 of the first electrode 210_8 can be smaller than the interval DEB4 between the third electrode 230_8 or the fourth electrode 240_8. In addition, the interval DC1 between the first contact electrodes 261_8 can be smaller than the interval DC4 between the fourth contact electrodes 264_8. However, the present disclosure is not limited thereto, and the widths of the electrodes or the intervals between the electrodes and the contact electrodes can be changed differently as long as the width WB1 of the first inner bank portion 410_8 and the second inner bank portion 420_8 becomes smaller than the width WB4 of the third inner bank portion 430_8 or the fourth inner bank portion 440_8 so that the area of each sub-pixel PXn is reduced. Additionally, the descriptions of the second contact electrode 262_8, the third contact electrode 263_8, the second sub-electrode 220A_8, and the second main electrode 220C_8 of the second electrode 220_8 are substantially the same as the above descriptions, and the descriptions of the fourth alignment line AL4 and the fourth voltage line VL4 are substantially the same as the descriptions of the second alignment line AL2 and the second voltage line VL2.

[0261] The display device 10 may include a main electrode and a sub-electrode or a plurality of electrodes to which the same alignment signal is applied, and may include a space in which the main electrode and the sub-electrode or the plurality of electrodes are spaced apart from each other so that a misalignment region NA can be formed. However, the main electrode and the sub-electrode or the plurality of electrodes do not have to be physically spaced apart from each other, and it is sufficient if at least a part of the main electrode and the sub-electrode or the plurality of electrodes can be arranged to be spaced apart from each other. In the display device 10 according to the embodiment, each of the electrodes may further include a bridging portion that connects the main electrode and the sub-electrode to each other.

[0262] Figure 22 is a plan view showing one sub-pixel of a display device according to another embodiment. Figure 23 is along Figure 22 a cross-sectional view taken along line Q4 - Q4' of.

[0263] Refer to Figure 22 and Figure 23, in the display device 10_9 according to the embodiment, each of the electrodes may further include a bridging portion that connects the main electrode and the sub - electrode to each other. For example, in addition to the first main electrode 210C_9 and the first sub - electrode 210A_9, the first electrode 210_9 may further include a first bridging portion 210B_9 that connects portions of the first main electrode 210C_9 and the first sub - electrode 210A_9 to each other. The second electrode 220_9 may include a second main electrode 220C_9, a second sub - electrode 220A_9, and a second bridging portion 220B_9, and the third electrode 230_9 and the fourth electrode 240_9 may include bridging portions 230B_9 and 240B_9 that connect the corresponding main electrodes 230C_9 and 240C_9 and the corresponding sub - electrodes 230A_9 and 240A_9 to each other respectively. Figure 22 The display device 10_9 according to Figure 16 the embodiment is different from the display device 10_5 according to

[0264] the embodiment in that the electrode further includes a bridging portion. Hereinafter, overlapping descriptions will be omitted, and the content different from the above will be mainly described.

[0265] For example, the first electrode 210_9 may be disposed on the first inner embankment portion 410_9, and may include a first sub - electrode 210A_9 disposed on one side of the first inner embankment portion 410_9 and a first main electrode 210C_9 disposed on the other side of the first inner embankment portion 410_9. In addition, the first electrode 210_9 may further include a first bridging portion 210B_9 that connects at least a portion of the first main electrode 210C_9 and the first sub - electrode 210A_9 to each other. The first bridging portion 210B_9 may be disposed to connect portions of the first main electrode 210C_9 and the first sub - electrode 210A_9 that are spaced apart from each other in the first direction DR1 (for example, the central portions of the first main electrode 210C_9 and the first sub - electrode 210A_9 in the second direction DR2). The first bridging portion 210B_9 may be disposed at the central portion of the first inner embankment portion 410_9, but is not limited thereto, and the first bridging portion 210B_9 may be disposed at both ends of the first inner embankment portion 410_9 in the second direction DR2 and connect the first main electrode 210C_9 and the first sub - electrode 210A_9 to each other in the above - mentioned region.

[0266] According to an embodiment, the first main electrode 210C_9 and the first sub-electrode 210A_9 may include portions physically spaced apart from each other, but these portions may be electrically connected to each other through the first bridging portion 210B_9. The first main electrode 210C_9 and the first sub-electrode 210A_9 may include portions physically spaced apart from each other and facing each other such that a misalignment region NA_9 may be formed on the first inner embankment portion 410_9. In addition, the first bridging portion 210B_9 may be disposed in a region of the portions of the first main electrode 210C_9 and the first sub-electrode 210A_9 that are spaced apart from each other, and may be directly connected to the first main electrode 210C_9 and the first sub-electrode 210A_9. The first main electrode 210C_9 and the first sub-electrode 210A_9 may be electrically connected to each other through the first bridging portion 210B_9, and only one of the first main electrode 210C_9 and the first sub-electrode 210A_9 may be electrically connected to the first voltage line VL1 or the light-emitting element 300. For example, in the case of the first electrode 210_9, the length of the first sub-electrode 210A_9 measured in the second direction DR2 may be greater than the length of the first main electrode 210C_9, and the first sub-electrode 210A_9 may be electrically connected to the first voltage line VL1 through the first contact hole CT1. The first main electrode 210C_9 may be electrically connected to one end of the light-emitting element 300. Since the first main electrode 210C_9 and the first sub-electrode 210A_9 are electrically connected to each other, the first source voltage applied to the first sub-electrode 210A_9 may be transmitted to one end of the light-emitting element 300 through the first bridging portion 210B_9 and the first main electrode 210C_9.

[0267] Similarly, the second electrode 220_9 may include a second main electrode 220C_9, a second sub-electrode 220A_9, and a second bridging portion 220B_9. The second sub-electrode 220A_9 may be electrically connected to the second voltage line VL2, and the second source voltage applied to the second sub-electrode 220A_9 may be transmitted to the light-emitting element 300 through the second bridging portion 220B_9 and the second main electrode 220C_9.

[0268] On the other hand, the third electrode 230_9 and the fourth electrode 240_9 may each include a main electrode 230C_9 and 240C_9 and a sub-electrode 230A_9 and 240A_9 that are partially spaced apart from each other, and may include bridge portions 230B_9 and 240B_9 that connect the main electrodes 230C_9 and 240C_9 and the sub-electrodes 230A_9 and 240A_9 to each other, respectively. By way of example, describing the third electrode 230_9, the third electrode 230_9 may include a third main electrode 230C_9 and a third sub-electrode 230A_9 disposed on both sides of the third inner embankment portion 430_9, respectively, and may include a third bridge portion 230B_9 that partially connects the third main electrode 230C_9 and the third sub-electrode 230A_9 to each other.

[0269] The third sub-electrode 230A_9 having a relatively large length measured in the second direction DR2 may be electrically connected to the first voltage line VL1 through the third contact hole CT3, and at the same time, may be electrically connected to one end of the light-emitting element 300, for example, one end of the third light-emitting element 300C. The third main electrode 230C_9 may have a relatively small length measured in the second direction DR2, and may be electrically connected to the third bridge portion 230B_9 and one end of the second light-emitting element 300B. The first source voltage applied through the first voltage line VL1 may be transmitted to the third sub-electrode 230A_9 through the third bridge portion 230B_9. The fourth electrode 240_9 is also the same as the above description.

[0270] Since the above-described main electrode and sub-electrode are arranged such that at least a part thereof is spaced apart from each other, a third electric field EL3 having an electric potential gradient toward the outward direction may be generated between the main electrode and the sub-electrode. The non-alignment region NA_9 may be formed at a portion where the main electrode and the sub-electrode are spaced apart from each other on the corresponding inner embankment portions 410_9, 420_9, 430_9, and 440_9, and the alignment region AA_9 may be formed between the corresponding inner embankment portions 410_9, 420_9, 430_9, and 440_9. In addition, the description of the first contact electrode 261_9, the second contact electrode 262_9, the third contact electrode 263_9, and the fourth contact electrode 264_9, the first alignment region AA1_9, the second alignment region AA2_9, and the third alignment region AA3_9, and the first non-alignment region NA1_9, the second non-alignment region NA2_9, the third non-alignment region NA3_9, and the fourth non-alignment region NA4_9 is substantially the same as the above description.

[0271] In the display device 10_9 according to the embodiment, each of the electrodes may include a bridge portion that electrically connects the main electrode and the sub-electrode to each other, and an electric signal for driving the display device 10_9 may be applied to each of the electrodes provided on the inner embankment portion.

[0272] Figure 24 is a plan view showing a sub - pixel of a display device according to another embodiment.

[0273] Reference Figure 24 , in the display device 10_10 according to an embodiment, the third electrode 230_10 and the fourth electrode 240_10 may respectively include main electrodes 230C_10 and 240C_10, sub - electrodes 230A_10 and 240A_10, and bridging portions 230B_10 and 240B_10, but may not be electrically connected to the voltage lines VL1 and VL2. Similar to Figure 18 the embodiment of, the third electrode 230_10 and the fourth electrode 240_10 may be disconnected and spaced apart from the electrode segments FE1_10 and FE2_10 respectively electrically connected to the voltage lines VL1 and VL2, and may be kept as floating electrodes. Figure 24 The display device 10_10 of Figure 18 and Figure 23 is a combination of the embodiments of

[0274] Figure 25 and Figure 26 is a plan view showing a sub - pixel of a display device according to other embodiments.

[0275] Reference Figure 25 and Figure 26 , in the display devices 10_11 and 10_12 according to embodiments, the bridging portions of the corresponding electrodes may be formed at different positions. In Figure 25 the display device 10_11, the bridging portions 210B_11, 220B_11, 230B_11 and 240B_11 of the corresponding electrodes may be respectively provided at both ends in the second direction DR2 of the corresponding inner embankment portions 410_11, 420_11, 430_11, 440_11, and may connect the corresponding main electrodes to each other or connect the main electrode and the sub - electrode to each other. Except for Figure 25 the display device 10_11, in Figure 26 the display device 10_12, as inFigure 24 Similar to the display device 10_10, the bridging portions 210B_12, 220B_12, 230B_12, and 240B_12 of the corresponding electrodes can also be respectively disposed at the central portions of the inner embankment portions 410_12, 420_12, 430_12, and 440_12. Their descriptions are substantially the same as the above descriptions, and thus detailed descriptions will be omitted. For example, the descriptions of the corresponding electrodes 210_11, 220_11, 230_11, 240_11, 210_12, 220_12, 230_12, and 240_12 respectively including the corresponding main electrodes 210C_11, 220C_11, 230C_11, 240C_11, 210C_12, 220C_12, 230C_12, and 240C_12, the corresponding sub-electrodes 210A_11, 220A_11, 230A_11, 240A_11, 210A_12, 220A_12, 230A_12, and 240A_12, and the corresponding bridging portions 210B_11, 220B_11, 230B_11, 240B_11, 210B_12, 220B_12, 230B_12, and 240B_12, the contact electrodes 261_11, 262_11, 263_11, 264_11, 261_12, 262_12, 263_12, and 264_12, and the electrode segments FE1_11, FE2_11, FE1_12, and FE2_12 are substantially the same as the above descriptions.

[0276] In the display device 10, the corresponding electrodes can include main electrodes and sub-electrodes, and a misalignment region can be formed between the main electrodes and the sub-electrodes. The main electrodes among these main electrodes that are electrically connected to the light-emitting element 300 can be electrically connected to the voltage lines VL1 and VL2 through contact holes, and at the same time, are electrically connected to the light-emitting element 300 through the corresponding contact electrodes 261 and 262. In some embodiments, in the display device 10, the corresponding contact electrodes 261 and 262 can be directly connected to the corresponding voltage lines VL1 and VL2.

[0277] Figure 27 is a plan view showing a sub-pixel of a display device according to still another embodiment. Figure 28 is along Figure 27 a cross-sectional view taken along line Q5-Q5' of

[0278] Refer to Figure 27 and Figure 28, in the display device 10_13 according to the embodiment, the first contact electrode 261_13 and the second contact electrode 262_13 can be electrically connected to the voltage lines VL1 and VL2 through the first contact hole CT1 and the second contact hole CT2, respectively. The plurality of first electrodes 210_13 and the second electrodes 220_13 can be disposed on both sides of the first inner embankment portion 410_13 and the second inner embankment portion 420_13, respectively, and can be spaced apart from each other. The plurality of first electrodes 210_13 and the second electrodes 220_13 extend in the second direction DR2, and during the process of manufacturing the display device 10_13, an alignment signal can be applied to the plurality of first electrodes 210_13 and the second electrodes 220_13 through a separate voltage application device.

[0279] In the display device 10_13, the alignment line AL disposed on the circuit element layer can be omitted, and the first electrode 210_13 and the second electrode 220_13 can be not directly connected to the voltage lines VL1 and VL2. The first electrode 210_13 and the second electrode 220_13 can be alignment electrodes for aligning the light-emitting element 300, and can be disconnected for each sub-pixel PXn in the display device 10_13. According to the embodiment, the plurality of first electrodes 210_13 and the second electrodes 220_13 can extend in the second direction DR2, respectively, but can be spaced apart from the electrode segments FE1 and FE2 disposed in the region overlapping with the outer embankment portion 450. The electrode segments FE1 and FE2 can be the electrodes that remain after being connected to the plurality of first electrodes 210_13 and the second electrodes 220_13 and are partially patterned subsequently after the light-emitting element 300 is aligned (see Figure 27 "CB") of. The electrode segments FE1 and FE2 can be kept in a floating state without being applied with other electrical signals.

[0280] The first contact electrode 261_13 and the second contact electrode 262_13 may be respectively disposed on the first electrode 210_13 and the second electrode 220_13, and may be formed to have a width larger than that of the first electrode 210_13 and the second electrode 220_13. According to an embodiment, the widths of the first contact electrode 261_13 and the second contact electrode 262_13 may be respectively larger than the widths WE1 and WE2 of the first electrode 210_13 and the second electrode 220_13, or may be respectively larger than the widths WB1 and WB2 of the first inner bank portion 410_13 and the second inner bank portion 420_13. The first contact electrode 261_13 and the second contact electrode 262_13 are disposed to respectively overlap with a plurality of the first electrodes 210_13 and the second electrodes 220_13, and may be disposed to respectively cover both sides of the inner bank portions 410_13 and 420_13 while respectively contacting both ends of the light-emitting element 300. At least a portion of the first contact electrode 261_13 and the second contact electrode 262_13 may be disposed on the first insulating layer 510 in a region where the inner bank portions 410_13 and 420_13 are not provided, and the first contact hole CT1 and the second contact hole CT2 may be formed in such a region. The first contact electrode 261_13 may be in direct contact with the first conductive pattern CDP1 through the first contact hole CT1, and may be electrically connected to the driving transistor DT and the first voltage line VL1 through the first conductive pattern CDP1. Similarly, the second contact electrode 262_13 may be in direct contact with the second conductive pattern CDP2 through the second contact hole CT2.

[0281] Meanwhile, the first contact electrode 261_13 and the second contact electrode 262_13 may be configured to overlap with a plurality of first electrodes 210_13 and second electrodes 220_13, respectively, and may be in direct contact with some of the plurality of first electrodes 210_13 and second electrodes 220_13, respectively. For example, the first electrodes 210_13 and second electrodes 220_13 adjacent to the light-emitting element 300 may be in direct contact with the first contact electrode 261_13 and the second contact electrode 262_13, respectively. The first electrodes 210_13 and second electrodes 220_13 adjacent to the light-emitting element 300 may be exposed through openings formed in the first insulating layer 510 provided on the first electrodes 210_13 and second electrodes 220_13, and the exposed portions exposed through the openings may be in direct contact with the first contact electrode 261_13 or the second contact electrode 262_13. However, the present disclosure is not limited thereto. The first insulating layer 510 may be configured to cover the first electrodes 210_13 and second electrodes 220_13 without exposing the first electrodes 210_13 and second electrodes 220_13. In this case, the first contact electrode 261_13 and the second contact electrode 262_13 may not be in direct contact with the plurality of electrodes 210_13 and 220_13, respectively.

[0282] Meanwhile, in the display device 10, the electrodes do not have to extend in one direction, and may also have a shape in which at least a part thereof is curved.

[0283] Figure 29 is a plan view showing a sub-pixel of a display device according to still another embodiment. Figure 30 is Figure 29 an enlarged view of part Q6 of Figure 31 is a cross-sectional view taken along line Q7-Q7' of Figure 30

[0284] Referring to Figures 29 to 31 , in the display device 10_14 according to an embodiment, the first electrode 210_14 and the second electrode 220_14 may have a shape in which at least a part of their regions is curved and the curved regions of the first electrode 210_14 and the second electrode 220_14 may be spaced apart from each other and face each other. The first inner bank 410_14 and the second inner bank 420_14 may also have a curved shape, and the curved portions of the first inner bank 410_14 and the second inner bank 420_14 may be spaced apart from each other and face each other.

[0285] For example, the first inner dike part 410_14 may have a predetermined width, may extend in one direction, and may include a plurality of holes. In an exemplary embodiment, the holes may have a circular shape and may be arranged along one direction in which the first inner dike part 410_14 extends. In Figure 29 it has been shown that three holes are formed in a first inner dike part 410_14, but the present disclosure is not limited thereto. The first inner dike part 410_14 may also include a greater number of holes, a smaller number of holes, or only one hole. In addition, the holes of the first inner dike part 410_14 are not limited in their shape as long as they can provide a space in which the second inner dike part 420_14 is disposed, and may also have a shape such as an oval or a quadrilateral or more polygons in a plan view. Hereinafter, it will be described by way of example that the first inner dike part 410_14 includes three holes having a circular shape.

[0286] The second inner dike part 420_14 may have a curved shape such as a circular shape, for example, and may be disposed in the holes of the first inner dike part 410_14. The diameter of the second inner dike part 420_14 may be smaller than the diameter of the holes of the first inner dike part 410_14, and the second inner dike part 420_14 may be spaced apart from and face the side walls of the holes of the first inner dike part 410_14. That is, the two side surfaces of the first inner dike part 410_14 and the second inner dike part 420_14 may be spaced apart from each other to face each other. A plurality of light emitting elements 300 may be disposed between the first inner dike part 410_14 and the second inner dike part 420_14.

[0287] The first electrode 210_14 is disposed on the first inner dike part 410_14. The first electrode 210_14 may be disposed to cover the first inner dike part 410_14 and, similar to the first inner dike part 410_14, may include a plurality of holes. According to an embodiment, the first electrode 210_14 may include a plurality of electrode holes formed to correspond to the holes of the first inner dike part 410_14. The electrode holes may have a diameter smaller than the diameter of the holes of the first inner dike part 410_14 such that the holes of the first inner dike part 410_14 are partially exposed, and the first electrode 210_14 may be disposed to cover the side walls of the holes of the first inner dike part 410_14.

[0288] The second electrode 220_14 is disposed on the second inner embankment portion 420_14. The second electrode 220_14 may be disposed to cover the curved outer surface of the second inner embankment portion 420_14, but may be disposed to expose a part of the upper surface of the second inner embankment portion 420_14, such as the central portion. According to an embodiment, the second electrode 220_14 may have a curved shape to correspond to the outer surface of the second inner embankment portion 420_14. The second electrode 220_14 may be disposed to cover the outer side surface of the second inner embankment portion 420_14 that is spaced apart from and faces the first inner embankment portion 410_14, and in an exemplary embodiment, the second electrode 220_14 may have a cylindrical shape. Accordingly, the first electrode 210_14 and the second electrode 220_14 may be spaced apart from and face each other between the first inner embankment portion 410_14 and the second inner embankment portion 420_14.

[0289] In addition, according to an embodiment, the second electrode 220_14 may include a second main electrode 220C_14 disposed along the outer side surface of the second inner embankment portion 420_14 and electrically connected to the light-emitting element 300, a second electrode extension portion 220E_14 disposed at the central portion of the second inner embankment portion 420_14, and a second bridging portion 220B_14 connecting the second main electrode 220C_14 and the second electrode extension portion 220E_14 to each other. The second electrode 220_14 may be electrically connected to the second voltage line VL2 through a second contact hole CT2 formed in the second electrode extension portion 220E_14. In the second electrode 220_14, the second main electrode 220C_14 spaced apart from the second electrode extension portion 220E_14 may be electrically connected to the second electrode extension portion 220E_14 through the second bridging portion 220B_14. One second bridging portion 220B_14 is shown in the drawing as connecting the second electrode extension portion 220E_14 and the second main electrode 220C_14 to each other, but the present disclosure is not limited thereto.

[0290] The first contact electrode 261_14 and the second contact electrode 262_14 may be arranged to cover the first electrode 210_14 and the second electrode 220_14 respectively, and may be disposed along the sidewall of the hole of the first inner embankment 410_14, and the second contact electrode 262_14 may have a width greater than that of the second electrode 220_14, and may be arranged to cover the outer surface of the second inner embankment 420_14. In an exemplary embodiment, the first contact electrode 261_14 and the second contact electrode 262_14 may have a circumferential or annular shape with the central portion of the second inner embankment 420_14 as the center of curvature, and may be arranged to be spaced apart from each other. The light-emitting element 300 disposed between the first inner embankment 410_14 and the second inner embankment 420_14 may be electrically connected to the first electrode 210_14 and the second electrode 220_14 through the first contact electrode 261_14 and the second contact electrode 262_14.

[0291] As described above, the first electrode 210_14 and the second electrode 220_14 to which different electrical signals are applied may be arranged between the first inner embankment 410_14 and the second inner embankment 420_14 so as to be spaced apart from each other, and the alignment region AA may be formed between the first electrode 210_14 and the second electrode 220_14.

[0292] On the other hand, the second electrode 220_14 is arranged to have a circumferential shape along the outer surface of the second inner embankment 420_14, such that the second electrode 220_14 to which the same electrical signal is applied may be arranged in a partially spaced-apart shape on the central portion of the second inner embankment 420_14. That is, the second electrode 220_14 may have a shape in which it surrounds the upper surface of the second inner embankment 420_14, and on the upper surface of the second inner embankment 420_14, the electric field generated by the alignment signal may have a potential gradient in the outward direction.

[0293] Figure 32 is a schematic diagram showing the electric field formed between the electrodes during the process of manufacturing Figure 31 the display device.

[0294] Reference Figure 32 shows that the first electrode 210_14 disposed on the first inner embankment 410_14 may be the same as the second electrode 220_14 disposed on the outer surface of the second inner embankment 420_14 (see Figure 30)(spaced apart and facing the second electrode 220_14. The second electrode 220_14 is disposed to surround the second inner embankment portion 420_14, and thus, the first electrode 210_14 can face each of a portion adjacent to the second electrode 220_14 and a portion spaced apart from the second electrode 220_14. A first electric field EL1 and a second electric field EL2 can be generated between the first electrode 210_14 and the portion adjacent to the second electrode 220_14 and the portion spaced apart from the second electrode 220_14 by different electric signals, and a potential gradient toward the region between the first electrode 210_14 and the second electrode 220_14 can be generated in the first electric field EL1 and the second electric field EL2. The light-emitting element 300 can be disposed between the first electrode 210_14 and the second electrode 220_14 by the first electric field EL1 and the second electric field EL2.)

[0295] On the other hand, a third electric field EL3 can be generated on the second inner embankment portion 420_14 by the second electrode 220_14. The third electric field EL3 can be generated by the same electric signal and can have a potential gradient from the upper surface of the second inner embankment portion 420_14 toward the outward direction. Accordingly, a misalignment region NA can be formed on the second inner embankment portion 420_14, and an alignment region AA can be formed between the first inner embankment portion 410_14 and the second inner embankment portion 420_14. The display device 10_14 according to an embodiment can include the inner embankment portions 410_14 and 420_14 and the electrodes 210_14 and 220_14 having a shape in which at least a part thereof is curved, and the alignment region AA and the misalignment region NA can be formed between the inner embankment portions 410_14 and 420_14 and the electrodes 210_14 and 220_14. Specifically, the second electrode 220_14 is disposed to cover only the outer surface of the second inner embankment portion 420_14 having a circular shape, such that a region in which the second electrodes 220_14 are partially spaced apart from each other can be formed on the upper surface of the second inner embankment portion 420_14. The misalignment region NA in which the light-emitting element 300 is not disposed can be formed in this region.)

[0296] Figure 33 and Figure 34 is a plan view showing a sub-pixel of a display device according to another embodiment.)

[0297] Reference Figure 33 and Figure 34 , in the display devices 10_15 and 10_16 according to an embodiment, the second electrodes 220_15 and 220_16 can respectively include a greater number of second bridging portions 220B_15 and 220B_16. In Figure 33In the display device 10_15, the second bridging portion 220B_15 of the second electrode 220_15 may have a shape in which it extends in the longitudinal direction in the figure, and may extend across the second electrode extension portion 220E_15 such that each of both ends of the second bridging portion 220B_15 may be connected to the second main electrode 220C_15. In Figure 34 In the display device 10_16, the second electrode 220_16 may further include a second bridging portion 220B_16 that extends in the lateral direction in the figure. Their descriptions are substantially the same as the above description, and thus detailed descriptions will be omitted. For example, the descriptions of the inner embankment portions 410_15, 420_15, 410_16, and 420_16, the second main electrode 220C_16, and the second electrode extension portion 220E_16 are substantially the same as the above description.

[0298] At the end of 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 preferred embodiments of the present invention disclosed are used only in a general and descriptive sense and not for the purpose of limitation.

Claims

1. A display device, comprising: The first substrate; The first inner dike portion and the second inner dike portion, which are arranged to extend in a first direction on the first substrate and are spaced apart from each other in a second direction different from the first direction; The first electrode, including a first main electrode and a first sub - electrode, the first main electrode being arranged to extend in the first direction on one side of the first inner dike portion, the first sub - electrode being arranged to extend in the first direction on the other side of the first inner dike portion and being at least partially spaced apart from and facing the first main electrode; The second electrode, which is arranged to extend in the first direction on the second inner dike portion and is spaced apart from and faces the first main electrode; And The light - emitting element, which is arranged between the first inner dike portion and the second inner dike portion, wherein, one end of the light - emitting element is arranged on the first main electrode and the other end is arranged on the second electrode.

2. The display device according to claim 1, wherein, An alignment - non - area where the light - emitting element is not arranged is formed on the first inner dike portion, and the alignment - non - area partially overlaps with the area where the first main electrode and the first sub - electrode are spaced apart from each other.

3. The display device according to claim 2, wherein, The second electrode includes a second main electrode and a second sub - electrode, the second main electrode being arranged to extend in the first direction on one side of the second inner dike portion, the second sub - electrode being arranged to extend in the first direction on the other side of the second inner dike portion.

4. The display device according to claim 3, wherein, The other end of the light - emitting element is arranged on the second main electrode.

5. The display device according to claim 3, wherein, The first main electrode and the first sub - electrode are spaced apart from and face each other in the second direction on the first inner dike portion and are not connected to each other, and the first sub - electrode is not electrically connected to the light - emitting element.

6. The display device according to claim 3, wherein, The second electrode further includes a bridging portion, the bridging portion being at least partially arranged between the second main electrode and the second sub - electrode on the second inner dike portion, and at least part of the second main electrode and the second sub - electrode are spaced apart from and face each other.

7. The display device according to claim 3, further comprising: The first contact electrode, which is arranged to extend in the first direction on the first main electrode and is in contact with one end of the light - emitting element; And The second contact electrode, which is arranged to extend in the first direction on the second main electrode and is arranged on the other end of the light - emitting element.

8. The display device according to claim 7, wherein, The light - emitting element has a shape in which it extends in one direction, and the interval between the first contact electrode and the second contact electrode is smaller than the length of the light - emitting element.

9. The display device according to claim 7, wherein, The widths of the first main electrode and the second main electrode are smaller than the widths of the first contact electrode and the second contact electrode.

10. The display device according to claim 7, wherein, The first main electrode and the first sub - electrode have the same width, and the interval between the first main electrode and the first sub - electrode is smaller than the width of the first inner dike portion.

11. The display device according to claim 2, wherein, A first source voltage is applied to the first main electrode, but not to the first sub - electrode.

12. The display device according to claim 11, It further includes a first electrode segment spaced apart from the first sub-electrode and the first inner embankment portion in the first direction.

13. The display device according to claim 2, further comprising: The third inner dike portion, which is arranged to extend in the first direction between the first inner dike portion and the second inner dike portion; And A plurality of third electrodes, which are arranged on both sides of the third inner dike portion and are spaced apart from each other in the second direction, Among them, a third electrode disposed on one of the two sides of the third inner embankment portion among the plurality of third electrodes is spaced apart from and faces the first main electrode, and a third electrode disposed on the other of the two sides of the third inner embankment portion among the plurality of third electrodes is spaced apart from and faces the second electrode.

14. The display device according to claim 13, wherein, The light-emitting element includes a first light-emitting element disposed between the first inner embankment portion and the third inner embankment portion, and a second light-emitting element disposed between the third inner embankment portion and the second inner embankment portion.

15. The display device according to claim 13, It further includes a plurality of second electrode segments spaced apart from the plurality of third electrodes and the third inner embankment portion in the first direction.

16. The display device according to claim 14, further comprising: A fourth inner embankment portion, disposed to extend in the first direction between the first inner embankment portion and the third inner embankment portion; And A plurality of fourth electrodes, disposed on both sides of the fourth inner embankment portion and spaced apart from each other in the second direction, wherein the light-emitting element further includes a third light-emitting element disposed between the fourth inner embankment portion and the third inner embankment portion.

17. A display device, comprising: A first substrate; A first inner embankment portion and a second inner embankment portion, disposed on the first substrate and spaced apart from and facing each other; A first electrode, including a first sub-electrode disposed to cover one side of the first inner embankment portion and a first main electrode disposed to cover the other side of the first inner embankment portion; A second electrode, including a second main electrode disposed to cover one side of the second inner embankment portion and a second sub-electrode disposed to cover the other side of the second inner embankment portion; And A light-emitting element, disposed between the first inner embankment portion and the second inner embankment portion, wherein the first electrode is not disposed on at least a part of the upper surface of the first inner embankment portion, and the second electrode is not disposed on at least a part of the upper surface of the second inner embankment portion.

18. The display device according to claim 17, It further includes a first insulating layer covering portions of the first electrode and the second electrode, wherein, The first insulating layer covers the first sub-electrode and the second sub-electrode, but is disposed to expose a part of the upper surfaces of the first main electrode and the second main electrode.

19. The display device according to claim 18, It further includes a first contact electrode and a second contact electrode. The first contact electrode is disposed on the first main electrode and contacts one end of the light-emitting element, and the second contact electrode is disposed on the second main electrode and contacts the other end of the light-emitting element.

20. The display device according to claim 19, wherein, The first main electrode is electrically connected to a first voltage line to which a first source voltage is applied.

21. The display device according to claim 20, wherein, The second contact electrode contacts a second voltage line to which a second source voltage is applied.

22. A display device, comprising: A first inner embankment portion, in which at least one hole is formed; A first electrode, disposed on the first inner embankment portion, and at least one electrode hole is formed in the first electrode to partially expose the hole and correspond to the hole; A second inner embankment portion, disposed in the hole of the first inner embankment portion and spaced apart from the side wall of the hole of the first inner embankment portion; A second electrode, disposed to cover the outer surface of the second inner embankment portion, but disposed to expose a part of the upper surface of the second inner embankment portion; And A plurality of light-emitting elements, disposed between the first inner embankment portion and the second inner embankment portion, and having two ends electrically connected to the first electrode and the second electrode, wherein the first electrode is disposed such that at least a part of it covers the side wall of the hole of the first inner embankment portion.

23. The display device according to claim 22, wherein, The second electrode includes: A main electrode, disposed to cover the outer side surface of the second inner embankment portion that is spaced apart from and faces the first inner embankment portion; An electrode extension portion, disposed on the exposed upper surface of the second inner embankment portion and spaced apart from the main electrode; and A bridging portion that connects the electrode extension portion and the main electrode to each other.

24. The display device according to claim 23, further comprising a first contact electrode and a second contact electrode, the first contact electrode being disposed on the first electrode and along the sidewall of the hole of the first inner dam, and the second contact electrode being disposed on the main electrode of the second electrode and having a width larger than that of the main electrode.

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