Display device and method of manufacturing the same

Abstract

The present application relates to a display device and a method for manufacturing the display device. The display device includes: a first pixel, the first pixel includes a first pixel branch line extending in a first direction at one side and a first common branch line extending in the first direction at another side opposite to the one side; a second pixel, including a second common branch line extending in the first direction at one side and a second pixel branch line extending in the first direction at another side opposite to one side of the second pixel; a first light-emitting element located between the first pixel branch line and the first common branch line; and a second light-emitting element located between the second common branch line and the second pixel branch line, wherein the first pixel and the second pixel are arranged in a second direction intersecting the first direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2018-0077092 filed on Jul. 3, 2018, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Embodiments of the present disclosure relate to a display device and a method of manufacturing the display device. Background Art

[0004] As multimedia has developed, the importance of display devices has increased. Therefore, various types (or kinds) of display devices such as organic light emitting displays (OLEDs) and liquid crystal displays (LCDs) have been used.

[0005] Devices configured to display images in a display device include display panels such as an OLED panel and an LCD panel. The display panel may include a light-emitting element as a light-emitting display panel. Examples of light-emitting diodes (LEDs) include OLEDs using organic materials as light-emitting materials (e.g., fluorescent materials) and inorganic LEDs using inorganic materials as light-emitting materials (e.g., fluorescent materials).

[0006] OLED uses organic materials as the light-emitting materials (e.g., fluorescent materials) of the light-emitting elements and has the characteristics of making the manufacturing process simple and the display element can have flexible characteristics. However, it has been found that such organic materials are easily affected by high temperature operating environments and have relatively low efficiency in blue light.

[0007] On the other hand, inorganic LEDs use inorganic semiconductors as light-emitting materials (e.g., fluorescent materials) compared to OLEDs, and have features that make inorganic LEDs durable even in high-temperature environments and highly efficient in blue light. Furthermore, even in terms of manufacturing processes that have been pointed out as limitations of some inorganic LED elements, transfer methods using dielectrophoresis (DEP) have been developed. Therefore, research on inorganic LEDs having high durability and efficiency compared to OLEDs has been conducted. Summary of the invention

[0008] Aspects of the embodiments of the present disclosure arrange alignment signal lines of a symmetrical structure (e.g., a substantially symmetrical structure) in an alignment region of a light emitting element for each pixel. The alignment signal lines of the symmetrical structure are arranged to prevent or reduce a drop in alignment voltage by reducing (e.g., removing) capacitance that may be formed between alignment signal lines of adjacent pixels when power is applied.

[0009] Aspects of embodiments of the present disclosure minimize or reduce a drop in alignment voltage and uniformly (eg, substantially uniformly) align light emitting elements in a display device.

[0010] According to an exemplary embodiment of the present disclosure, a display device includes: a first type pixel, the first type pixel includes a first pixel branch line and a first common branch line, the first pixel branch line is arranged to extend in a first direction at one side, and the first common branch line is arranged to extend in the first direction at another side arranged opposite to the one side; a second type pixel, the second type pixel includes a second common branch line and a second pixel branch line, the second common branch line is arranged to extend in the first direction at one side, and the second pixel branch line is arranged to extend in the first direction at another side arranged opposite to the one side of the second pixel branch line; a first light-emitting element is arranged between the first pixel branch line and the first common branch line; and a second light-emitting element is arranged between the second common branch line and the second pixel branch line, wherein the first type pixel and the second type pixel are arranged in a second direction intersecting with the first direction.

[0011] In an exemplary embodiment, at least one of the first type pixels and at least one of the second type pixels are alternately arranged in the second direction.

[0012] In an exemplary embodiment, at least a portion of the first common branch line and a portion of the second common branch line are electrically coupled (eg, electrically connected).

[0013] In an exemplary embodiment, the second common branch line is disposed to be spaced apart from the second pixel branch line in one direction of the second direction, and the display device further includes a third pixel branch line disposed to be spaced apart from the second pixel branch line in a direction opposite to the one direction of the second direction.

[0014] In an exemplary embodiment, at least a portion of the second pixel branch line and a portion of the third pixel branch line protrude at one end portion in the first direction in a direction in which the second pixel branch line and the third pixel branch line face each other.

[0015] In an exemplary embodiment, at least one of the second type pixels includes a first light emitting element.

[0016] In an exemplary embodiment, at least one of the first type pixels is arranged in a first direction.

[0017] In an exemplary embodiment, the first common branch lines of the first type pixels arranged in the first direction extend in the first direction and are coupled (eg, connected).

[0018] In an exemplary embodiment, the display device further includes a common trunk line arranged to extend in the second direction, wherein the first common branch line extending in the first direction is coupled to (eg, connected to) the common trunk line.

[0019] In an exemplary embodiment, first pixel branches of first type pixels arranged in the first direction are spaced apart from each other and arranged to be aligned in the first direction.

[0020] According to another exemplary embodiment of the present disclosure, a display device includes: a pixel array extending in a first direction, in which first-type pixels and second-type pixels are alternately arranged, wherein: each of the first-type pixels and the second-type pixels includes a pixel electrode, a common electrode arranged opposite to the pixel electrode, and a light-emitting element arranged between the pixel electrode and the common electrode; in the first-type pixels, the pixel electrode is arranged at one side of the common electrode in the first direction; and in the second-type pixels, the pixel electrode is arranged at the other side of the common electrode in the first direction.

[0021] In an exemplary embodiment, the pixel electrodes and the common electrodes of the first type pixels and the second type pixels respectively include portions extending in a second direction crossing the first direction.

[0022] In an exemplary embodiment, the display device also includes a common trunk extending in a first direction, wherein: the common electrode of the first type of pixel includes a first common branch pattern; the common electrode of the second type of pixel adjacent to the first type of pixel includes a second common branch pattern arranged opposite to and separated from the first common branch pattern; and the first common branch pattern and the second common branch pattern are coupled to (e.g., connected to) the common trunk.

[0023] In an exemplary embodiment, an end portion of the first common branch pattern and an end portion of the second common branch pattern are coupled (eg, connected) to each other.

[0024] According to another exemplary embodiment of the present disclosure, a method for manufacturing a display device includes: forming a conductive layer on a substrate, the conductive layer including a first pixel line extending in a first direction, a second pixel line arranged at a side of the first pixel line in a second direction intersecting the first direction, and a first common line arranged at another side of the first pixel line in an opposite direction to the one side; aligning a light emitting element between the first pixel line and the first common line; and forming a separation line by patterning at least a portion of the first pixel line extending in the first direction.

[0025] In an exemplary embodiment, the conductive layer further includes a second common line disposed in an opposite direction of the second pixel line to a direction in which the first pixel line is disposed; and the second pixel line and the second common line are disposed to be spaced apart from each other.

[0026] In an exemplary embodiment, when the conductive layer is formed, at least a portion of the first pixel line and a portion of the second pixel line are coupled (eg, connected) to each other.

[0027] In an exemplary embodiment, forming the separation line includes patterning a region where the first pixel line and the second pixel line are coupled (eg, connected) and electrically separating the first pixel line and the second pixel line.

[0028] In an exemplary embodiment, the conductive layer further includes a common trunk extending in the second direction.

[0029] The first common line and the second common line may extend in a first direction and may be coupled to (eg, connected to) a common trunk line.

[0030] In an exemplary embodiment, aligning the light emitting element includes: grounding one end of the common trunk line and applying an alignment power to the first pixel line and the second pixel line; and forming a capacitance between the first pixel line and the first common branch line.

[0031] It should be noted that the embodiments of the present disclosure are not limited to the embodiments described above, and other embodiments of the present disclosure will be apparent to those skilled in the art from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other aspects and features of embodiments of the present disclosure will become more apparent by describing in more detail exemplary embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0033] Figure 1 is a plan view of a display device according to an embodiment;

[0034] Figure 2 yes Figure 1 an enlarged view of part A;

[0035] Figure 3 is a plan view schematically showing a type of pixel according to an embodiment;

[0036] Figure 4 is a schematic diagram showing an arrangement of pixels in a display device according to an embodiment;

[0037] Figure 5 It is along Figure 1 A cross-sectional view taken along line II';

[0038] Fig. 6Ais a schematic diagram of a light emitting element according to an embodiment;

[0039] FIG. 6B to FIG. 6C is a schematic diagram of a light emitting element according to another embodiment;

[0040] Figures 7 to 10 is a plan view schematically showing some parts of a method of manufacturing a display device according to an embodiment;

[0041] Figure 11 to Figure 12 is a plan view of a display device according to other embodiments; and

[0042] Figures 13 to 15 is a cross-sectional view schematically illustrating a display device and a method of manufacturing the display device according to still another embodiment. DETAILED DESCRIPTION

[0043] The subject matter of the present disclosure will now be described more fully below with reference to the accompanying drawings, in which embodiments of the present disclosure are shown. However, the subject matter of the present disclosure may be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0044] 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 intervening layers may also be present. Throughout the specification, the same reference numerals refer to the same components.

[0045] 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 element. For example, without departing from the spirit and scope of the present disclosure, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0046] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0047] Figure 1 is a plan view of a display device according to an embodiment. Figure 2 yes Figure 1 An enlarged view of part A of FIG.

[0048] refer to Figure 1 and Figure 5, the display device 10 may include an area defined by a light-emitting area LA and a non-light-emitting area NLA (e.g., a first non-light-emitting area NLA1 and a second non-light-emitting area NLA2). In the light-emitting area LA, the light-emitting element 350 included in the display device 10 may be arranged and configured to display light having a set color or a specific color. The non-light-emitting area NLA (e.g., the first non-light-emitting area NLA1 and / or the second non-light-emitting area NLA2) may be defined as an area other than the light-emitting area LA. In some embodiments, the non-light-emitting area NLA may be covered by a set member or a specific member so as to be invisible (or unobservable) from the outside of the display device 10. Various suitable members for operating the light-emitting element 350 disposed in the light-emitting area LA may be disposed in the non-light-emitting area NLA. For example, a line, a circuit, a driver, etc. for applying an electrical signal to the light-emitting area LA may be disposed in the non-light-emitting area NLA, but the embodiment is not limited thereto.

[0049] The display device 10 includes a plurality of pixels PX (e.g., PX1, PX2, PX3, PX4, PX5, and / or PX6) disposed in the light emitting area LA. Each of the plurality of pixels PX may be configured to display light in a set wavelength band or a specific wavelength band to the outside of the display device 10. Figure 1 , six pixels PX are shown, but it goes without saying that the display device 10 may include more or fewer pixels PX. Although the drawings show a plurality of pixels PX arranged in the first direction D1, the plurality of pixels PX may also be arranged in the opposite direction of the first direction D1, in the second direction D2 which is a direction crossing the first direction D1, in the opposite direction of the second direction D2, etc. Figure 1 The pixel PX may also be divided into a plurality of pixels, and each of the pixels may form a single pixel PX. Figure 1 As shown in FIG. 1 , the plurality of electrodes are arranged in parallel (eg, substantially in parallel) in the first direction D1 and may have various suitable structures, for example, arranged in a direction crossing the first direction D1 (ie, in the second direction D2) or arranged in a zigzag shape.

[0050] The plurality of pixels PX may include one or more light emitting elements 350 (see Figure 2 ), one or more light emitting elements 350 are configured to emit light in a set wavelength band or a specific wavelength band and are configured to display colors. The light emitted from the light emitting element 350 can be seen from the outside through the light emitting area LA of the display device 10 (see Figure 5). In one embodiment, a light emitting element 350 configured to emit different colors may be included in a pixel PX configured to display different colors. For example, a first pixel PX1 and a fourth pixel PX4 configured to display red may include a light emitting element 350 configured to emit red light, a second pixel PX2 and a fifth pixel PX5 configured to display green may include a light emitting element 350 configured to emit green light, and a third pixel PX3 and a sixth pixel PX6 configured to display blue may include a light emitting element 350 configured to emit blue light. However, embodiments are not limited thereto, and pixels PX configured to display different colors may also include a light emitting element 350 configured to emit light of the same (e.g., substantially the same) color (e.g., blue light), and the color of each pixel PX may also be achieved by a wavelength conversion layer or a color filter disposed on or along the light emitting path of the corresponding light.

[0051] The display device 10 may include a plurality of lines 600 and 700 and a plurality of light emitting elements 350. At least a portion of the plurality of lines 600 and 700 may be disposed in each pixel PX and electrically coupled to (e.g., electrically connected to) the light emitting element 350, and an electrical signal may be applied to the light emitting element 350 so that the light emitting element 350 emits light of a set color or a specific color. At least a portion of the plurality of lines 600 and 700 may be used to form an electric field in the pixel PX to align the light emitting element 350. For example, when aligning a light emitting element 350 configured to emit light of different colors with a plurality of pixels PX, it is useful or important to accurately align different light emitting elements 350 for each pixel PX. When aligning the light emitting element 350 using dielectrophoresis (DEP), a solution containing the light emitting element 350 may be applied to the display device 10, AC power may be applied to the solution to form an electric field, and a dielectrophoretic force may be applied to the light emitting element 350 to align the light emitting element 350. A method of aligning the light emitting element 350 will be described in more detail herein below.

[0052] The plurality of lines 600 and 700 may include a common line 600 and a pixel line 700. The common line 600 and the pixel line 700 may include trunk lines 650 and 750 and a plurality of branch lines 610, 620, 630 and 710, 720, 730, the trunk lines 650 and 750 being arranged to extend in a first direction D1, and the plurality of branch lines 610, 620, 630 and 710, 720, 730 extending and branching from the trunk lines 650 and 750 in a second direction D2 intersecting the first direction D1, respectively.

[0053] For example, the common trunk line 650 as the trunk line of the common line 600 may have one end coupled to (e.g., connected to) the signal application pad PAD and the other end disposed in the first direction D1 and extending to another adjacent pixel PX. The signal application pad PAD may be coupled to (e.g., connected to) the display device 10 or an external power source and apply an electrical signal to the common line 600. A plurality of pixels PX adjacent in the first direction D1 may share the common trunk line 650 disposed to extend.

[0054] A plurality of common branches 610, 620, and 630 are branched from a common trunk 650 and extend in a second direction D2 intersecting the first direction D1. A plurality of common branches 610, 620, and 630 may terminate in a state spaced apart from a pixel trunk 750 disposed opposite to the common trunk 650. For example, the common branches 610, 620, and 630 may be disposed in a state where one end is coupled to (e.g., connected to) the common trunk 650 and the other end is spaced apart from another trunk. For example, a plurality of common branches 610, 620, and 630 (e.g., a first common branch 610, a second common branch 620, and a third common branch 630) may be spaced apart from other common branches of the common trunk 650, branched from the common trunk 650, and disposed for each pixel PX. Since having one end coupled to (eg, connected to) the common trunk line 650 , the first common branch line 610 , the second common branch line 620 , and the third common branch line 630 may receive the same electrical signal for each pixel PX.

[0055] The pixel line 700 may include a pixel stem line 750. The pixel stem line 750 may be disposed opposite to the common stem line 650, and may be spaced apart from the common stem line 650.

[0056] For example, the pixel trunk line 750 may also have one end coupled to (e.g., connected to) the signal application pad PAD and another end disposed in the first direction D1 and extending to another adjacent pixel PX. Therefore, the pixel trunk line 750 may receive an electrical signal from the signal application pad PAD, and a plurality of adjacent pixels PX may share the pixel trunk line 750.

[0057] A plurality of pixel branch lines 710, 720, and 730 are branched from the pixel trunk line 750 and extend in a second direction D2 intersecting the first direction D1. The pixel branch lines 710, 720, and 730 may terminate in a state where they are spaced apart from a common trunk line 650 disposed opposite to the pixel trunk line 750. For example, the pixel branch lines 710, 720, and 730 may be disposed in a state where one end is coupled to (e.g., connected to) the pixel trunk line 750 and the other end is spaced apart from another trunk line (e.g., the common trunk line 650).

[0058] The plurality of pixel branch lines 710, 720, and 730 may include a first pixel branch line 710, a second pixel branch line 720, and a third pixel branch line 730. For example, the first pixel branch line 710, the second pixel branch line 720, and the third pixel branch line 730 may be spaced apart from other pixel branches of the pixel trunk line 750, branched from the pixel trunk line 750, and provided for each pixel PX configured to display a different color. Figure 1 As shown in , the first pixel branch line 710 may be provided for the first pixel PX1 and the fourth pixel PX4 configured to emit red light, the second pixel branch line 720 may be provided for the second pixel PX2 and the fifth pixel PX5 configured to emit green light, and the third pixel branch line 730 may be provided for the third pixel PX3 and the sixth pixel PX6 configured to emit blue light. As will be further described herein below, the pixel branches 710, 720, and 730 provided for each pixel PX may control the emission of the light emitting element 350 provided in each pixel PX by applying different electrical signals thereto. Therefore, the pixel branches 710, 720, and 730 may adjust the color displayed by the pixel PX of the display device 10.

[0059] In some embodiments, the common line 600 may be a common electrode provided for each pixel PX, and the pixel line 700 may be a pixel electrode. Any one of the common line 600 and the pixel line 700 may be an anode electrode, and the other may be a cathode electrode.

[0060] The common trunk line 650 and the pixel trunk line 750 may be separated from each other relative to the light-emitting area LA, and may be arranged in different non-light-emitting areas NLA. For example, the common trunk line 650 may be arranged in the first non-light-emitting area NLA1, which is arranged at one side of the light-emitting area LA, for example, below the light-emitting area LA in the drawings, and the pixel trunk line 750 may be arranged in the second non-light-emitting area NLA2, which is arranged at the other side of the light-emitting area LA, for example, above the light-emitting area LA in the drawings. The other side of the light-emitting area LA may be a side in a direction opposite to the one side, but the present disclosure is not limited thereto. In addition, instead of the common trunk line 650 and the pixel trunk line 750 being arranged below and above the light-emitting area LA, respectively, the common trunk line 650 may be arranged above the light-emitting area LA according to the observation point, and the pixel trunk line 750 may be arranged below the light-emitting area LA.

[0061] By disposing different lines disposed in the display device 10 in different non-emission areas NLA relative to the emission area LA, the space of the non-emission area NLA can be minimized or reduced. The plurality of lines 600 and 700 can be respectively disposed to maximize or increase the emission area LA for the same area.

[0062] However, the embodiment is not limited thereto, and as long as the plurality of lines 600 and 700 are respectively disposed in the non-light emitting area NLA of at least one side portion and another side portion, the structure in which the plurality of lines 600 and 700 are disposed is not particularly limited. In some embodiments, the plurality of lines 600 and 700 may be disposed at the right side portion and the left side portion relative to the light emitting area LA to be spaced apart from each other, depending on the observation point. In some embodiments, all different lines may also be disposed in the same (e.g., substantially the same) direction relative to the light emitting area LA.

[0063] As described above, a plurality of common branch lines 610, 620, and 630 and a plurality of pixel branch lines 710, 720, and 730 may be disposed in the pixel PX of the light emitting area LA. Therefore, at least a portion of the common line 600 and the pixel line 700 may be disposed in the non-light emitting area NLA, and the remaining portions of the common line 600 and the pixel line 700 may be disposed in the light emitting area LA. However, the embodiment is not limited thereto, and in some cases, the trunk line may also be disposed in the light emitting area LA.

[0064] In a single pixel PX, the pixel branch lines 710, 720, and 730 may be arranged by forming pairs with the common branch lines 610, 620, and 630, respectively. The branch lines forming a pair are arranged to be opposite to each other and spaced apart from each other. For example, the first pixel branch line 710 and the first common branch line 610 may be arranged to form a pair in the first pixel PX1 and the fourth pixel PX4, the second pixel branch line 720 and the second common branch line 620 may be arranged to form a pair in the second pixel PX2 and the fifth pixel PX5, and the third pixel branch line 730 and the third common branch line 630 may be arranged to form a pair in the third pixel PX3 and the sixth pixel PX6.

[0065] Since the common branches 610, 620, 630 and the pixel branches 710, 720, 730 are respectively branched from the common trunk 650 and the pixel trunk 750, the structure of the common branches 610, 620, 630 and the pixel branches 710, 720, 730 in the pixel PX may be locally different according to the arrangement of the trunks.

[0066] For example, in the case of a common trunk line 650 disposed in a first non-luminous area NLA1, wherein the first non-luminous area NLA1 is disposed at one side of the luminous area LA, for example, disposed below the luminous area LA, a plurality of common branch lines 610, 620, and 630 may branch and extend in the second direction D2. In some embodiments, the common branch lines 610, 620, and 630 may be disposed to extend from the bottom to the top of the drawing. The pixel trunk line 750 may be disposed opposite to the common trunk line 650 and disposed in a second non-luminous area NLA2, wherein the second non-luminous area NLA2 is disposed at the other side of the luminous area LA, for example, disposed above the luminous area LA. In this case, a plurality of pixel branch lines 710, 720, and 730 may branch and extend in a direction opposite to the second direction D2. For example, the pixel branch lines 710, 720, and 730 may be disposed to extend from the top to the bottom of the drawing. In other words, the plurality of pixel branch lines 710 , 720 , 730 and the plurality of common branch lines 610 , 620 , 630 may be branched from respective corresponding trunk lines to be spaced apart from each other in the pixel PX and disposed in directions facing (eg, opposite to) each other.

[0067] In some embodiments, the first common branch line 610 disposed in the first pixel PX1 may be disposed to extend in the second direction D2, and the first pixel branch line 710 may be disposed to extend in the opposite direction of the second direction D2 while being disposed opposite to and spaced apart from the first common branch line 610. Therefore, the first common branch line 610 and the first pixel branch line 710 may be parallel (e.g., substantially parallel) to each other, while only partial areas of their side surfaces overlap in the same (e.g., substantially the same) plane. The ends of the first common branch line 610 and the first pixel branch line 710 may be disposed in opposite directions relative to the center of the first pixel PX1.

[0068] The same may be applied to the second common branch line 620 and the second pixel branch line 720 disposed in the second pixel PX2 and the third common branch line 630 and the third pixel branch line 730 disposed in the third pixel PX3. For example, both the pair of the second pixel branch line 720 and the second common branch line 620 and the pair of the third pixel branch line 730 and the third common branch line 630 may be parallel to each other (e.g., substantially parallel) with only partial areas of their side surfaces overlapping in the same (e.g., substantially the same) plane, and ends thereof may be disposed in opposite directions relative to the center of the second pixel PX2 and the center of the third pixel PX3.

[0069] However, the embodiment is not limited thereto. As described above, the arrangement of the common branches 610, 620, 630 and the pixel branches 710, 720, 730 provided in each pixel PX may be changed in various suitable ways according to the arrangement of the common trunk line 650 and the pixel trunk line 750. For example, when the common trunk line 650 and the pixel trunk line 750 are provided in the same (e.g., substantially the same) direction relative to the light emitting area LA (e.g., in the first non-light emitting area NLA1 or in the second non-light emitting area NLA2), the branches to be provided in the pixel PX and branched from each trunk line may extend in the same (e.g., substantially the same) direction.

[0070] In other words, the first common branch line 610 disposed in the first pixel PX1 may extend in the second direction D2, and the first pixel branch line 710 may also extend in the second direction D2. The first common branch line 610 and the first pixel branch line 710 may be parallel (e.g., substantially parallel) to each other, and most of their side surfaces may overlap in the same (e.g., substantially the same) plane. The ends of the first common branch line 610 and the first pixel branch line 710 may be disposed in the same (e.g., substantially the same) direction relative to the center of the first pixel PX1.

[0071] One of the common branches 610, 620, and 630 and one of the pixel branches 710, 720, and 730, which are arranged to be opposite to each other and spaced apart from each other in a single pixel PX, may respectively constitute a pixel electrode 330 and a common electrode 340 (eg, Figure 5 ). The light emitting element 350 described above may be disposed between one of the pixel branches 710, 720, and 730 and one of the common branches 610, 620, and 630 that are opposite to each other. One end of the light emitting element 350 may be coupled to (e.g., connected to) one of the pixel branches 710, 720, and 730, and the other end of the light emitting element 350 may be coupled to (e.g., connected to) one of the common branches 610, 620, and 630. Therefore, the light emitting element 350 may receive an electrical signal from one of the pixel branches 710, 720, and 730 and one of the common branches 610, 620, and 630 and emit colored light.

[0072] refer to Figure 2, a plurality of light emitting elements 350 may be arbitrarily disposed between a corresponding one of the pixel branches 710, 720, and 730 and a corresponding one of the common branches 610, 620, and 630. As described above, the light emitting element 350 may be in contact with a corresponding one of the pixel branches 710, 720, and 730 and a corresponding one of the common branches 610, 620, and 630, wherein a corresponding one of the pixel branches 710, 720, and 730 and a corresponding one of the common branches 610, 620, and 630 are disposed so that their respective ends are opposite to each other and spaced apart from each other. In this case, the arrangement structure of the light emitting element 350 may be disposed substantially perpendicular to the pixel branches 710, 720, and 730 and the common branches 610, 620, and 630, and may be disposed substantially parallel to the corresponding portions of the pixel trunk line 750 and the common trunk line 650.

[0073] At the same time, as described above, the common branches 610, 620 and 630 and the pixel branches 710, 720 and 730 are respectively spaced apart from other common branches of the common trunk 650 and other pixel branches of the pixel trunk 750, branched from the common trunk 650 and the pixel trunk 750, and arranged to be opposite to each other in a single pixel PX. However, the common branches 610, 620, 630 and the pixel branches 710, 720, 730 arranged for each pixel PX can also be arranged in a different structure. For example, relative to the center of the pixel PX, the pixel branches 710, 720, 730 may be arranged at one side and the common branches 610, 620, 630 may be arranged at the other side. In some embodiments, the common branches 610, 620, 630 may be arranged at one side and the pixel branches 710, 720, 730 may be arranged at the other side. This will refer to Figure 3 to Figure 4 Describe in more detail.

[0074] Figure 3 is a plan view schematically illustrating different types of pixels according to an embodiment. Figure 4 is a schematic diagram showing the arrangement of pixels in a display device according to an embodiment.

[0075] refer to Figure 3, the display device 10 according to the embodiment may include type pixels (e.g., first type pixel Flip1 and second type pixel Flip2) having different arrangement structures. In the case of the first type pixel Flip1, the pixel branches 710, 720, 730 may be disposed at one side portion (e.g., the left side portion) of the first type pixel Flip1 and constitute the first type pixel electrode 700F_1. The common branches 610, 620, 630 may be disposed at a side portion (e.g., at the right side portion) of the first type pixel Flip1 opposite to the one side portion and constitute the first type common electrode 600F_1. The first type pixel electrode 700F_1 and the first type common electrode 600F_1 may be disposed in the first type pixel Flip1 to be opposite to each other and spaced apart from each other. The light emitting element 350 may be disposed between the first type pixel electrode 700F_1 and the first type common electrode 600F_1.

[0076] In the case of the second type pixel Flip2, the common branches 610, 620, 630 may be disposed at one side (e.g., the left side) and constitute the second type common electrode 600F_2. The pixel branches 710, 720, 730 may be disposed at another side opposite to the one side, e.g., at the right side, and constitute the second type pixel electrode 700F_2. For example, the first type pixel Flip1 and the second type pixel Flip2 may have structures that are symmetrical (e.g., substantially symmetrical) to each other.

[0077] When the first type pixel Flip1 and the second type pixel Flip2 are adjacently and alternately aligned, the first type pixel electrode 700F_1 and the second type common electrode 600F_2 may be disposed at one side and the other side, respectively, relative to the first type common electrode 600F_1. In addition, the first type common electrode 600F_1 and the second type pixel electrode 700F_2 may be disposed at one side and the other side, respectively, relative to the second type common electrode 600F_2.

[0078] In some embodiments, at least one of the type common electrodes (e.g., the first type common electrode 600F_1 and the second type common electrode 600F_2) and at least one of the type pixel electrodes (e.g., the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2) may be disposed at two sides adjacent to the type common electrode (e.g., the first type common electrode 600F_1 or the second type common electrode 600F_1 or 600F_2) and the type pixel electrode (e.g., the first type pixel electrode 700F_1 or the second type pixel electrode 700F_2). In this case, as will be described below, since an electric field is not formed (or substantially not formed) in an area not aligned with the light emitting element 350 (e.g., an area between the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2 and an area between the first type common electrode 600F_1 and the second type common electrode 600F_2), no capacitance is generated therein (or substantially no capacitance is generated therein). By removing capacitance that may be formed in a region that is not aligned with the light emitting element 350 , a drop in the voltage of the AC power may be minimized or reduced.

[0079] However, the embodiment is not limited thereto, and only one of the first type common electrode 600F_1 and the second type common electrode 600F_2 may be substantially disposed between the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2. For example, the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2 may be disposed at both side surfaces of the first type common electrode 600F_1 or the second type common electrode 600F_2, respectively. When the first type pixel Flip1 and the second type pixel Flip2 are alternately aligned in any direction, the two type pixel electrodes and the single type common electrode may be alternately disposed.

[0080] Therefore, different type pixel electrodes (e.g., the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2) may share a single type common electrode (e.g., the first type common electrode 600F_1 or the second type common electrode 600F_2). The light emitting element 350 may be disposed at both side surfaces of the shared type common electrode (e.g., the first type common electrode 600F_1 or the second type common electrode 600F_2). In other words, any type pixel electrode (e.g., the first type pixel electrode 700F_1 and the second type pixel electrode 700F_2) may be coupled to (e.g., connected to) only the light emitting element 350 in a single pixel PX. On the other hand, a type common pixel (e.g., the first type common electrode 600F_1 and the second type common electrode 600F_2) may be coupled to (e.g., connected to) the light emitting element 350 in two or more pixels PX.

[0081] Figure 4 Schematically shows Figure 1 Arrangement of pixels PX in the display device 10. In an exemplary embodiment, the first pixel PX1 and the fourth pixel PX4 may be configured to display red (R, "flipped R"), the second pixel PX2 and the fifth pixel PX5 may be configured to display green (G, "flipped G"), and the third pixel PX3 and the sixth pixel PX6 may be configured to display blue (B, "flipped B"). Figure 4 1 shows an arrangement structure of colors configured to be displayed by the pixels PX. Figure 1 When arranged in the first direction D1 as shown in , the first to sixth pixels PX1 to PX6 may be configured to display red (R), green (G), blue (B), red (R), green (G), and blue (B), respectively.

[0082] In the display device 10, the first type pixel Flip1 and the second type pixel Flip2 may be Figure 1 The first type pixel Flip1 configured to display red (R) is arranged in the first pixel PX1, and the second type pixel Flip2 configured to display green (G) may be arranged in the second pixel PX2. The first type pixel Flip1 configured to display blue (B) may be arranged in the third pixel PX3, and the second type pixel Flip2 configured to display red (R) again may be arranged in the fourth pixel PX4.

[0083] Therefore, the first pixel PX1 and the second pixel PX2 may have a symmetrical structure (e.g., a substantially symmetrical structure) in terms of the arrangement of electrodes. Even when the first pixel PX1 and the fourth pixel PX4 are configured to display the same (e.g., substantially the same) color, such as red (R), the first type pixel Flip1 and the second type pixel Flip2 different from each other may be respectively disposed in the first pixel PX1 and the fourth pixel PX4. Figure 4 , a case where a single first-type pixel Flip1 is provided in each pixel PX (e.g., a first pixel PX1 configured to display red (R)) is shown as an example, but the embodiment is not limited thereto. In some embodiments, a plurality of first-type pixels Flip1 may be provided in the first pixel PX1 configured to display red (R). This will be described in more detail below with reference to another embodiment herein.

[0084] The display device 10 may have a structure in which the above-mentioned first type pixels Flip1 and second type pixels Flip2 are alternately aligned in the pixels PX of the emission area LA. Therefore, regarding the common trunk line 650 and the pixel trunk line 750 provided on the display device 10, the gaps separating the line spaces of the respective branches may vary.

[0085] In one embodiment, other common branches 610, 620, and 630 adjacent to any common branches 610, 620, and 630 may be spaced apart from any common branches 610, 620, and 630 of the common trunk 650 at different gaps and branched from the common trunk 650. For example, other common branches 610, 620, and 630 spaced apart at a small gap in the opposite direction of the first direction D1 may be spaced apart at a relatively large gap compared to other common branches 610, 620, and 630 of any common branches 610, 620, and 630 spaced apart at a small gap in the first direction D1. Furthermore, even in the case of pixel branch lines 710, 720 and 730, other pixel branch lines 710, 720 and 730 adjacent to any pixel branch line 710, 720 and 730 may be spaced apart from any pixel branch line 710, 720 and 730 of the pixel trunk line 750 at different intervals and branched from the pixel trunk line 750.

[0086] For example, the following will be described as an example Figure 1 , a first pixel PX1, a second pixel PX2, and a third pixel PX3 are shown in FIG. 4 and are disposed adjacent to each other in the first direction D1.

[0087] The second common branch line 620 branches between the third common branch line 630 spaced apart along the first direction D1 and the first common branch line 610 spaced apart along the opposite direction of the first direction D1. In the first to third pixels PX1 to PX3, the gap between the second common branch line 620 and the first common branch line 610 may be shorter than the gap between the second common branch line 620 and the third common branch line 630. For example, in Figure 1 The first common branch line 610 at the left side of may branch while being relatively closer to the second common branch line 620 than the third common branch line 630 .

[0088] The second pixel branch line 720 branches between the third pixel branch line 730 spaced apart along the first direction D1 and the first pixel branch line 710 spaced apart in the opposite direction of the first direction D1. In the first to third pixels PX1 to PX3, the gap between the second pixel branch line 720 and the third pixel branch line 730 may be shorter than the gap between the second pixel branch line 720 and the first pixel branch line 710. For example, Figure 1 The third pixel branch line 730 at the left side of may branch when it is relatively closer to the second pixel branch line 720 than the first pixel branch line 710 .

[0089] In other words, at least two or more of the common branches 610, 620, 630 and at least two or more of the pixel branches 710, 720, 730 of the display device 10 may form a pair, be spaced apart with a relatively small gap, and branch. The branch lines forming a pair may branch from each trunk line parallel to each other (e.g., substantially parallel to each other). For example, Figure 1 As in the embodiment, the first common branch line 610 and the second common branch line 620 may form a pair and branch while being adjacent to each other, and the second pixel branch line 720 and the third pixel branch line 730 may form a pair and branch while being adjacent to each other.

[0090] As described above, the common branch lines 610, 620, 630 and the pixel branch lines 710, 720, 730 are arranged in each pixel PX to be opposite to each other and spaced apart from each other. In this case, the pixel branch lines 710, 720, 730 may not be arranged between the common branch lines 610, 620, 630 spaced apart by a relatively small gap, and the common branch lines 610, 620, 630 may be arranged between the pixel branch lines 710, 720, 730 spaced apart by a relatively large gap. Similarly, in the opposite case, the common branch lines 610, 620, 630 may not be arranged between the pixel branch lines 710, 720, 730 spaced apart by a relatively small gap, and the common branch lines 610, 620, 630 may be arranged between the pixel branch lines 710, 720, 730 spaced apart by a relatively large gap.

[0091] For example, the first pixel branch line 710 and the first common branch line 610 are disposed in the first pixel PX1, the second pixel branch line 720 and the second common branch line 620 are disposed in the second pixel PX2, and the third pixel branch line 730 and the third common branch line 630 are disposed in the third pixel PX3. The pixel branches 710, 720, and 730 may not be disposed between the first common branch line 610 and the second common branch line 620 spaced apart by a relatively small gap. Instead, the pixel branches 710, 720, and 730 (e.g., the second pixel branch line 720 and the third pixel branch line 730 spaced apart from the second pixel branch line 720 by a relatively small gap) may be disposed between the second common branch line 620 and the third common branch line 630 spaced apart by a relatively large gap. In addition, the first common branch line 610 and the second common branch line 620 may be disposed between the first pixel branch line 710 and the second pixel branch line 720 spaced apart by a relatively large gap. In addition, in the case of the fourth pixel PX4 disposed in the first direction D1 of the third pixel PX3, the first pixel branch line 710 and the first common branch line 610 may be disposed by a method consistent with the method described above. For example, the first common branch line 610 in the fourth pixel PX4 may be disposed adjacent to the third common branch line 630 in the third pixel PX3, and the first pixel branch line 710 in the fourth pixel PX4 may be disposed to be spaced apart from the first common branch line 610 in the fourth pixel PX4. The pixel PX that may be disposed to further extend in the first direction D1 may also be disposed by the same method.

[0092] Therefore, the branch lines (e.g., the first pixel branch line 710 and the first common branch line 610 and the second common branch line 620 and the second pixel branch line 720) disposed in each pixel PX may be disposed symmetrically (e.g., substantially symmetrically) with respect to the boundary between the first pixel PX1 and the second pixel PX2. The branch lines (e.g., the second common branch line 620 and the second pixel branch line 720 and the third pixel branch line 730 and the third common branch line 630) disposed in each pixel PX may be disposed symmetrically (e.g., substantially symmetrically) with respect to the boundary between the second pixel PX2 and the third pixel PX3. The branch lines disposed in the first pixel PX1 and the third pixel PX3 may be disposed in substantially the same structure.

[0093] For the branch lines aligned in the first direction D1 from the area where the signal application pad PAD is disposed, the common branch lines 610, 620, 630 and the pixel branch lines 710, 720, 730 may be disposed alternately while one or more of the branch lines are disposed continuously. For example, the first pixel branch line 710 and the first common branch line 610 may be disposed alternately while the first common branch line 610 and the second common branch line 620 are disposed continuously. The second common branch line 620 and the second pixel branch line 720 may be disposed alternately while the second pixel branch line 720 and the third pixel branch line 730 are disposed continuously.

[0094] As described above, the light emitting element 350 is disposed between the common branch lines 610, 620, 630 and the pixel branch lines 710, 720, 730 in each pixel PX. The light emitting element 350 can be aligned by receiving the dielectrophoretic force caused by the electric field formed when the common branch lines 610, 620, 630 are grounded and AC power is applied to the pixel branch lines 710, 720, 730. In this case, since the common branch lines 610, 620, 630 or the pixel branch lines 710, 720, 730 are continuously disposed in the boundary between the pixels PX where the light emitting element 350 is not disposed, even when AC power is applied, capacitance is not formed (or substantially formed) due to the electric field. Therefore, a drop in the voltage of the AC power applied to the pixel branch lines 710, 720, 730 can be minimized or reduced, and a voltage at a level similar to that applied to the pixel PX adjacent to the AC power source can also be applied to the pixel PX disposed with a relatively large gap from the AC power source. Therefore, at the front surface of the display device 10, a drop in the voltage of the AC power can be minimized or reduced, AC power having a voltage required to align the light emitting element 350 can be applied, and the light emitting element 350 can be uniformly (e.g., substantially uniformly) aligned in each pixel PX. This will be described in more detail herein below.

[0095] The pixel line 700 of the display device 10 according to the embodiment may include a plurality of separation lines, wherein the separation lines may be arranged to be spaced apart from each other. Figure 1 As shown in FIG. 1 , the pixel stem line 750 extending in the first direction D1 may include at least one stem separation line 750 a , and the stem separation lines 750 a may be aligned in the first direction D1 .

[0096] For example, the pixel trunk 750 may include a first trunk separation line 751a coupled to (e.g., connected to) a first pixel branch 710 disposed in a first pixel PX1, a second trunk separation line 752a coupled to (e.g., connected to) a second pixel branch 720 disposed in a second pixel PX2, and a third trunk separation line 753a coupled to (e.g., connected to) a third pixel branch 730 disposed in a third pixel PX3. The trunk separation lines 750a may be disposed to be spaced apart from each other, and a trunk spacer 750b may be disposed between the trunk separation lines 750a. Therefore, the first trunk separation line 751a, the second trunk separation line 752a, the third trunk separation line 753a, and the trunk spacer 750b may be aligned in the first direction D1 in which the pixel trunk 750 extends.

[0097] In an exemplary embodiment, the pixel trunk line 750 may be electrically separated in an area overlapping with a boundary between any pixel PX and another adjacent pixel PX. For example, a trunk line spacer 750b may be provided in an area where two side surfaces of any pixel PX extend in the second direction D2 and overlap with the pixel trunk line 750. Therefore, the length of the trunk line separation line 750a measured in the first direction D1 may be substantially equal to the length of the pixel PX measured in the first direction D1. For example, by providing a trunk line spacer 750b at a boundary surface adjacent to the pixel PX, the two side portions of the trunk line separation line 750a may be substantially aligned with the two side surfaces of the pixel PX. However, the embodiment is not limited thereto, and as long as the pixel trunk line 750 can be electrically separated at each pixel PX, the structure is not particularly limited.

[0098] Since the common trunk 650 is electrically coupled to (e.g., electrically connected to) a plurality of common branches 610, 620, and 630, the common trunk 650 may apply the same electrical signal to each of the plurality of common branches 610, 620, and 630. On the other hand, since the pixel trunk 750 is separated into a plurality of trunk separation lines 750a, the pixel branches 710, 720, and 730 coupled to (e.g., connected to) the trunk separation line 750a may receive different electrical signals. In some embodiments, the plurality of trunk separation lines 750a may receive different electrical signals through different thin film transistors. Therefore, the pixel trunk 750 may be electrically separated by the trunk spacer 750b, and the light emitting element 350 configured to emit light of different colors may be disposed in each pixel PX and operated separately. Even in a pixel PX in which a light emitting element 350 configured to emit light of the same (e.g., substantially the same) color is provided, different trunk separation lines 750a and pixel branches 710, 720, and 730 may be provided and operated separately. However, the embodiment is not limited thereto. The branch included in the pixel line 700 may not necessarily be provided in the pixel trunk line 750, and may also be provided on each of the pixel branches 710, 720, and 730. This will be described in more detail below with reference to other embodiments herein.

[0099] In the following, reference will be made to Figure 5 The cross-sectional structure of the light emitting area LA of the display device 10 is described in more detail.

[0100] Figure 5 It is along Figure 1 A cross-sectional view taken along line II'. Figure 5 A cross-sectional view of a single pixel PX disposed in the light emitting area LA of the display device 10 according to an embodiment is shown.

[0101] refer to Figures 1 to 5, the display device 10 may include a substrate 110, a thin film transistor (e.g., a first thin film transistor 120 and a second thin film transistor 140) disposed on the substrate 110, electrodes (e.g., a pixel electrode 330 and a common electrode 340) disposed on the thin film transistor (e.g., the first thin film transistor 120 and the second thin film transistor 140), and a light emitting element 350. The thin film transistor may include a first thin film transistor 120 as a driving transistor and a second thin film transistor 140 as a switching transistor. Each thin film transistor may include an active layer, a gate electrode, a source electrode, and a drain electrode. The pixel electrode 330 may be electrically coupled to (e.g., electrically connected to) the drain electrode of the first thin film transistor 120.

[0102] In more detail, the substrate 110 may be an insulating substrate. The substrate 110 may include an insulating material such as glass, quartz and / or a polymer resin. Examples of polymer materials may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP) or a combination thereof. The substrate 110 may be a rigid substrate, but may also be a flexible substrate that is bendable, foldable, rollable, etc.

[0103] The buffer layer 115 may be disposed on the substrate 110. The buffer layer 115 may prevent or reduce diffusion of impurity ions, prevent or reduce penetration of moisture or external air, and serve to smooth the surface of the substrate 110. The buffer layer 115 may include silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxide nitride (SiO x N y )wait.

[0104] The semiconductor layer is disposed on the buffer layer 115. The semiconductor layer may include the first active layer 126 of the first thin film transistor 120, the second active layer 146 of the second thin film transistor 140, and the auxiliary layer 163. The semiconductor layer may include polycrystalline silicon, single crystal silicon, oxide semiconductor, or the like.

[0105] The first gate insulating layer 170 is disposed on the semiconductor layer. The first gate insulating layer 170 covers the semiconductor layer. The first gate insulating layer 170 may be used as a gate insulating film of a thin film transistor. The first gate insulating layer 170 may include SiO x 、SiN x 、SiO x N y 、Aluminum oxide (Al 2 O3 ), tantalum oxide, hafnium oxide, zirconium oxide, titanium oxide, etc.

[0106] The first conductive layer is disposed on the first gate insulating layer 170. The first conductive layer may include a first gate electrode 121 disposed on the first active layer 126 of the first thin film transistor 120, a second gate electrode 141 disposed on the second active layer 146 of the second thin film transistor 140, and a power line 161 disposed on the auxiliary layer 163, while the first gate insulating layer 170 is sandwiched between the semiconductor layer and the first gate electrode 121, the second gate electrode 141, and the power line 161. The first conductive layer may include one or more metals selected from molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), titanium (Ti), tantalum (Ta), tungsten (W), and copper (Cu). The first conductive layer may include a single layer film or a multilayer film.

[0107] The second gate insulating layer 180 is disposed on the first conductive layer. The second gate insulating layer 180 may be an interlayer insulating film. The second gate insulating layer 180 may include a SiO x 、SiN x 、SiO x N y , hafnium oxide, Al 2 O 3 , inorganic insulating materials such as titanium oxide, tantalum oxide, and zinc oxide.

[0108] The second conductive layer is disposed on the second gate insulating layer 180. The second conductive layer includes a capacitor electrode 128 disposed on the first gate electrode 121 while the second gate insulating layer 180 is sandwiched between the first conductive layer and the capacitor electrode 128. The capacitor electrode 128 may form a backup capacitor together with the first gate electrode 121.

[0109] Similar to the first conductive layer described above, the second conductive layer may include one or more metals selected from Mo, Al, Pt, Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Ca, Ti, Ta, W and Cu.

[0110] The interlayer insulating layer 190 is disposed on the second conductive layer. The interlayer insulating layer 190 may be an interlayer insulating film. In addition, the interlayer insulating layer 190 may be used to smooth (e.g., planarize) the surface of the second conductive layer. The interlayer insulating layer 190 may include an organic insulating material such as a polyacrylate resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene ether resin, a polyphenylene sulfide resin, and / or benzocyclobutene (BCB).

[0111] The third conductive layer is disposed on the interlayer insulating layer 190 , and includes the first drain electrode 123 and the first source electrode 124 of the first thin film transistor 120 , the second drain electrode 143 and the second source electrode 144 of the second thin film transistor 140 , and the power electrode 162 disposed on the power line 161 .

[0112] Each of the first source electrode 124 and the first drain electrode 123 may be electrically coupled to (e.g., electrically connected to) the first active layer 126 through a first contact hole 129 passing through the interlayer insulating layer 190 and the second gate insulating layer 180. Each of the second source electrode 144 and the second drain electrode 143 may be electrically coupled to (e.g., electrically connected to) the second active layer 146 through a second contact hole 149 passing through the interlayer insulating layer 190, the second gate insulating layer 180, and the first gate insulating layer 170. The power electrode 162 may be electrically coupled to (e.g., electrically connected to) the power line 161 through a third contact hole 169 passing through the interlayer insulating layer 190 and the second gate insulating layer 180.

[0113] The third conductive layer may include one or more metals selected from Al, Mo, Pt, Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Ca, Ti, Ta, W, and Cu. The third conductive layer may include a single layer or a multilayer film. For example, the third conductive layer may include a stacked structure of Ti / Al / Ti, Mo / Al / Mo, Mo / AlGe / Mo, Ti / Cu, etc.

[0114] The insulating substrate layer 310 is disposed on the third conductive layer. The insulating substrate layer 310 may include an organic material such as polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin and / or BCB. The surface of the insulating substrate layer 310 may be smooth.

[0115] The partition wall 380 may be disposed on the insulating substrate layer 310. At least a portion of each of the pixel line 700 and the common line 600 may be disposed on the partition wall 380. For example, the partition wall 380 may include at least one first partition wall 381 on which the pixel branch lines 710, 720, and 730 are disposed and at least one second partition wall 382 on which the common branch lines 610, 620, and 630 are disposed. Figure 5 , a single first partition wall 381 and a single second partition wall 382 are shown, but partition walls 380 corresponding to the number of branch lines may be provided in a single pixel PX. Figure 1 In the arrangement structure shown in FIG. 1 , both the number of first partition walls 381 provided in a single pixel and the number of second partition walls 382 provided in a single pixel may be one.

[0116] However, the embodiment is not limited thereto, and the partition wall 380 disposed on the insulating substrate layer 310 may be omitted. For example, the common branch lines 610, 620, and 630 and the pixel branch lines 710, 720, and 730 may also be directly disposed on the insulating substrate layer 310. In this case, Figure 5 Differently, a step difference formed due to a member disposed on the insulating substrate layer 310 may be relatively small.

[0117] The pixel branch lines 710, 720, and 730 and the common branch lines 610, 620, and 630 disposed on the first partition wall 381 and the second partition wall 382 may include partition wall reflection layers (e.g., first partition wall reflection layers 331 and second partition wall reflection layers 341) and partition wall electrode layers (first partition wall electrode layers 332 and second partition wall electrode layers 342) which will be described below and constitute the pixel electrode 330 and the common electrode 340. For example, at least a portion of the common line 600 and the pixel line 700 disposed in each pixel PX may be the pixel electrode 330 or the common electrode 340 in the pixel PX.

[0118] The first partition wall reflective layer 331 and the second partition wall reflective layer 341 may be disposed on the partition wall 380 .

[0119] The first partition wall reflective layer 331 covers the first partition wall 381 and is coupled to (eg, electrically connected to) the first drain electrode 123 of the first thin film transistor 120 through the fourth contact hole 319_1 passing through the insulating substrate layer 310. Figure 1 , the first partition wall reflective layer 331 is shown to be electrically coupled to (e.g., electrically connected to) the first drain electrode 123 of the first thin film transistor 120 through the pixel electrode contact hole CNTD disposed on the first trunk separation line 751a. For example, the pixel electrode contact hole CNTD may be the fourth contact hole 319_1. The pixel electrode contact hole CNTD may be disposed in the non-emission area NLA of the display device 10, but the embodiment is not limited thereto. The pixel electrode contact hole CNTD may also be disposed on the pixel branches 710, 720, and 730, and contact the first partition wall reflective layer 331 in the emission area LA.

[0120] The second partition wall reflective layer 341 is disposed to be spaced apart from the first partition wall reflective layer 331. The second partition wall reflective layer 341 covers the second partition wall 382 and is electrically coupled to (eg, electrically connected to) the power electrode 162 through the fifth contact hole 319_2 passing through the insulating substrate layer 310. Figure 1, the second partition wall reflective layer 341 is shown as being electrically coupled to (e.g., electrically connected to) the power electrode 162 of the power line 161 through a common electrode contact hole CNTS disposed on a common trunk line 650. For example, the common electrode contact hole CNTS may be a fifth contact hole 319_2. The common electrode contact hole CNTS may be disposed in the non-emission area NLA of the display device 10, but the embodiment is not limited thereto. The common electrode contact hole CNTS may also be disposed on the common branches 610, 620, and 630 and contact the second partition wall reflective layer 341 in the emission area LA. Since the common trunk line 650 is electrically coupled (e.g., electrically connected) between adjacent pixels PX, the common trunk line 650 may contact the second partition wall reflective layer 341 through a single common electrode contact hole CNTS disposed in the non-emission area NLA outside the emission area LA.

[0121] Meanwhile, the first partition wall reflective layer 331 and the second partition wall reflective layer 341 may reflect light emitted from the light emitting element 350, thereby propagating the light toward the outside of the display device 10. The light emitted from the light emitting element 350 is emitted in any suitable direction without directivity, and the light advancing toward the first partition wall reflective layer 331 and the second partition wall reflective layer 341 may be reflected and propagated toward the outside of the display device 10, for example, toward the top of the partition wall 380. Therefore, the light emitted from the light emitting element 350 may be concentrated in one direction, thereby increasing optical efficiency. In order to reflect the light emitted from the light emitting element 350, the first partition wall reflective layer 331 and the second partition wall reflective layer 341 may include a material having a high reflectivity. For example, the first partition wall reflective layer 331 and the second partition wall reflective layer 341 may include a material such as Ag and / or Cu, but the embodiment is not limited thereto.

[0122] The first partition wall electrode layer 332 and the second partition wall electrode layer 342 may be disposed on the first partition wall reflective layer 331 and the second partition wall reflective layer 341 , respectively.

[0123] The first partition wall electrode layer 332 is disposed directly above the first partition wall reflective layer 331. The first partition wall electrode layer 332 may have a pattern substantially the same as (eg, substantially identical to) the first partition wall reflective layer 331.

[0124] The second partition wall electrode layer 342 is disposed directly above the second partition wall reflective layer 341. The second partition wall electrode layer 342 is disposed to be separated from the first partition wall electrode layer 332. The second partition wall electrode layer 342 may have the same (eg, substantially the same) pattern as the second partition wall reflective layer 341.

[0125] In one embodiment, the first partition wall electrode layer 332 may cover the first partition wall reflective layer 331 disposed below the first partition wall electrode layer 332, and the second partition wall electrode layer 342 may cover the second partition wall reflective layer 341 disposed below the second partition wall electrode layer 342. For example, the first partition wall electrode layer 332 and the second partition wall electrode layer 342 may be formed to be larger than the first partition wall electrode layer 332 and the second partition wall reflective layer 341, and cover the end side surfaces of the first partition wall electrode layer 332 and the second partition wall electrode layer 342. However, the embodiment is not limited thereto.

[0126] The first partition wall electrode layer 332 and the second partition wall electrode layer 342 may transmit an electrical signal transmitted to the first partition wall reflective layer 331 and the second partition wall reflective layer 341 to a contact electrode to be described below. The first partition wall electrode layer 332 and the second partition wall electrode layer 342 may include a transparent conductive material. For example, the first partition wall electrode layer 332 and the second partition wall electrode layer 342 may include a material such as indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), etc., but the embodiment is not limited thereto.

[0127] The first partition wall reflection layer 331 and the first partition wall electrode layer 332 disposed on the first partition wall 381 constitute pixel branch lines 710, 720, and 730, and the pixel branch lines 710, 720, and 730 constitute the pixel electrode 330. The pixel electrode 330 may protrude to the region extending from both ends of the first partition wall 381, and thus, the pixel electrode 330 may contact the insulating substrate layer 310 in the region where the pixel electrode 330 protrudes. The second partition wall reflection layer 341 and the second partition wall electrode layer 342 disposed on the second partition wall 382 constitute common branch lines 610, 620, and 630, and the common branch lines 610, 620, and 630 constitute the common electrode 340. The common electrode 340 may protrude to the region extending from both ends of the second partition wall 382, ​​and thus, the common electrode 340 may contact (e.g., physically contact) the insulating substrate layer 310 in the region where the common electrode 340 protrudes.

[0128] For example, the pixel branch lines 710, 720, 730 and the common branch lines 610, 620, 630 may include the first partition wall reflection layer 331 and the second partition wall reflection layer 341 and the first partition wall electrode layer 332 and the second partition wall electrode layer 342, respectively, and have a structure in which the first partition wall reflection layer 331 and the second partition wall reflection layer 341 and the first partition wall electrode layer 332 and the second partition wall electrode layer 342 are stacked. In addition, as described above, the pixel branch lines 710, 720, 730 and the common branch lines 610, 620, 630 may constitute the pixel electrode 330 and the common electrode 340, respectively. However, the embodiment is not limited thereto.

[0129] The pixel electrode 330 and the common electrode 340 may be arranged to cover the entire (e.g., substantially the entire) area of ​​the first partition wall 381 and the entire (e.g., substantially the entire) area of ​​the second partition wall 382, ​​respectively. However, the pixel electrode 330 and the common electrode 340 are arranged to be opposite to each other and spaced apart from each other. In the space where the pixel electrode 330 and the common electrode 340 are spaced apart, the first insulating layer 510 may be arranged, and as will be described below, the light emitting element 350 may be arranged on the first insulating layer 510.

[0130] Since the first partition wall reflective layer 331 can receive the driving voltage from the first thin film transistor 120, and the second partition wall reflective layer 341 can receive the power voltage from the power line 161, the pixel electrode 330 and the common electrode 340 receive the driving voltage and the power voltage, respectively. As will be described below, the first contact electrode 360 ​​and the second contact electrode 370 respectively disposed on the pixel electrode 330 and the common electrode 340 can transmit the driving voltage and the power voltage to the light emitting element 350, and the light emitting element 350 can emit light when a preset or predetermined current flows in the light emitting element 350.

[0131] The first insulating layer 510 is disposed on partial regions of the pixel electrode 330 and the common electrode 340. The first insulating layer 510 may be disposed in a space between the pixel electrode 330 and the common electrode 340. In a plan view, the first insulating layer 510 may have an island shape or a linear shape formed along the space between the pixel electrode 330 and the common electrode 340.

[0132] The light emitting element 350 is disposed on the first insulating layer 510. The first insulating layer 510 may be disposed between the light emitting element 350 and the insulating substrate layer 310. The lower surface of the first insulating layer 510 may be in contact with the insulating substrate layer 310, and the light emitting element 350 may be disposed at the upper surface of the first insulating layer 510. Both side surfaces of the first insulating layer 510 may be in contact with the pixel electrode 330 and the common electrode 340, and the first insulating layer 510 may electrically insulate the pixel electrode 330 and the common electrode 340 from each other.

[0133] The first insulating layer 510 may overlap with a partial area of ​​the pixel electrode 330 and the common electrode 340, for example, partially overlap with an area where the pixel electrode 330 and the common electrode 340 protrude in opposite directions from each other. For example, the ends of the two side surfaces of the first insulating layer 510 may cover the upper surface of the area where the pixel electrode 330 and the common electrode 340 protrude in opposite directions from each other. The first insulating layer 510 may protect the area overlapping with the pixel electrode 330 and the common electrode 340 and electrically insulate the area from the pixel electrode 330 and the common electrode 340. By preventing or reducing the first semiconductor layer 351 and the second semiconductor layer 352 (such as Fig. 6A ) is in direct contact with other base materials, the first insulating layer 510 can prevent or reduce damage to the light emitting element 350.

[0134] Although the surface of the first insulating layer 510 in contact with the pixel electrode 330 and the common electrode 340 is Figure 5 3 and 4. The first insulating layer 510 is shown as being aligned with both side surfaces of the light emitting element 350, but the embodiment is not limited thereto. For example, the length of the first insulating layer 510 may be greater than the length of the light emitting element 350, and therefore, the first insulating layer 510 may protrude beyond both side surfaces of the light emitting element 350. Therefore, the first insulating layer 510 and the side surfaces of the light emitting element 350 may be stacked in a stepped shape (e.g., a step shape).

[0135] At least one light emitting element 350 may be disposed between the pixel electrode 330 and the common electrode 340. As an example, Figure 1 , a case where a light emitting element 350 configured to emit light of the same (eg, substantially the same) color is provided in each pixel PX is shown. However, the embodiment is not limited thereto, and as described above, light emitting elements 350 configured to emit light of different colors may also be provided together in a single pixel PX.

[0136] The pixel electrode 330 and the common electrode 340 may be disposed to be spaced apart by a set gap or a predetermined gap, and the gap between the pixel electrode 330 and the common electrode 340 may be less than or equal to the length of the light emitting element 350. Therefore, electrical contact between the light emitting element 350 and the pixel electrode 330 and between the light emitting element 350 and the common electrode 340 may be facilitated.

[0137] The light emitting element 350 may be an LED. The light emitting element 350 may be a nanostructure whose size is generally in nanometer units. The light emitting element 350 may be an inorganic LED including an inorganic material. In the case where the light emitting element 350 is an inorganic LED, when a light emitting material having an inorganic crystal structure is disposed between two electrodes disposed opposite to each other and an electric field is formed in the light emitting material in a set direction or a specific direction, the inorganic LED may be aligned between the two electrodes in which a set polarity or a specific polarity is formed. This will be described in more detail herein below.

[0138] The second insulating layer 520 may be disposed on the light emitting element 350, protect the light emitting element 350, and fix the light emitting element 350 between the pixel electrode 330 and the common electrode 340. In some embodiments, the second insulating layer 520 may also be disposed at the outer surface of the light emitting element 350 and fix the light emitting element 350. The second insulating layer 520 may be disposed at a local area of ​​the outer surface of the light emitting element 350. The second insulating layer 520 may be disposed so that both side surfaces of the light emitting element 350 are exposed. For example, the length of the second insulating layer 520 may be shorter than the length of the light emitting element 350, and therefore, the second insulating layer 520 may be more recessed inward than both side surfaces of the light emitting element 350. Therefore, the side surfaces of the first insulating layer 510, the light emitting element 350, and the second insulating layer 520 may be stacked in a stepped shape (e.g., a step shape). In this case, similar to the first insulating layer 510, by the second insulating layer 520 disposed as described above, the contact of the first contact electrode 360 ​​with the second contact electrode 370 at the side surface of the light emitting element 350 may be promoted.

[0139] However, the embodiment is not limited thereto, and the lengths of the second insulating layer 520 and the light emitting element 350 may be equal, and both side portions of the second insulating layer 520 and both side portions of the light emitting element 350 may be aligned. In addition, when the second insulating layer 520 and the first insulating layer 510 are patterned simultaneously (e.g., synchronously), both side portions of the second insulating layer 520 may be aligned with both side portions of the light emitting element 350 and the first insulating layer 510.

[0140] A first contact electrode 360 ​​disposed on the pixel electrode 330 and overlapping at least a portion of the second insulating layer 520 and a second contact electrode 370 disposed on the common electrode 340 and in contact with at least a portion of the second insulating layer 520 even when disposed to be spaced apart from the first contact electrode 360 ​​may be included on the second insulating layer 520.

[0141] The first contact electrode 360 ​​and the second contact electrode 370 may be disposed on the upper surface of the pixel electrode 330 and the upper surface of the common electrode 340, respectively. For example, the first contact electrode 360 ​​and the second contact electrode 370 may contact the first partition wall electrode layer 332 and the second partition wall electrode layer 342, respectively, on the upper surface of the pixel electrode 330 and the upper surface of the common electrode 340. The first contact electrode 360 ​​and the second contact electrode 370 may contact the first semiconductor layer 351 and the second semiconductor layer 352 (such as Fig. 6A Therefore, the first contact electrode 360 ​​and the second contact electrode 370 can transmit the electrical signal applied to the first partition wall electrode layer 332 and the second partition wall electrode layer 342 to the light emitting element 350.

[0142] The first contact electrode 360 ​​may be disposed on the pixel electrode 330 to cover the pixel electrode 330, and a portion of the lower surface of the first contact electrode 360 ​​may contact the light emitting element 350 and the second insulating layer 520. One end of the first contact electrode 360 ​​located in the direction of the common electrode 340 is disposed on the second insulating layer 520. The second contact electrode 370 may be disposed on the common electrode 340 to cover the common electrode 340, and a portion of the lower surface of the second contact electrode 370 may contact the light emitting element 350, the second insulating layer 520, and the third insulating layer 530. One end of the second contact electrode 370 located in the direction of the pixel electrode 330 is disposed on the third insulating layer 530.

[0143] The first contact electrode 360 ​​and the second contact electrode 370 may be disposed on the second insulating layer 520 or the third insulating layer 530 to be spaced apart from each other. For example, both the first contact electrode 360 ​​and the second contact electrode 370 may contact the light emitting element 350 and the second insulating layer 520 or the third insulating layer 530, but the first contact electrode 360 ​​and the second contact electrode 370 may be disposed to be spaced apart from each other on the second insulating layer 520. Therefore, the first contact electrode 360 ​​and the second contact electrode 370 may not be coupled (e.g., connected) to each other. Therefore, the first contact electrode 360 ​​and the second contact electrode 370 may receive different powers from the first thin film transistor 120 and the power line 161. For example, the first contact electrode 360 ​​may receive a driving voltage applied from the first thin film transistor 120 to the pixel electrode 330, and the second contact electrode 370 may receive a power voltage applied from the power line 161 to the common electrode 340. However, the embodiment is not limited thereto.

[0144] The first contact electrode 360 ​​and the second contact electrode 370 may include a conductive material. For example, the first contact electrode 360 ​​and the second contact electrode 370 may include ITO, IZO, ITZO, Al, etc. However, the embodiment is not limited thereto.

[0145] The first contact electrode 360 ​​and the second contact electrode 370 may include the same (e.g., substantially the same) material as the first partition wall electrode layer 332 and the second partition wall electrode layer 342. In order to contact the first partition wall electrode layer 332 and the second partition wall electrode layer 342, the first contact electrode 360 ​​and the second contact electrode 370 may be disposed on the first partition wall electrode layer 332 and the second partition wall electrode layer 342 in the same (e.g., substantially the same) pattern. The first contact electrode 360 ​​and the second contact electrode 370 contacting the first partition wall electrode layer 332 and the second partition wall electrode layer 342 may receive an electrical signal applied to the first partition wall electrode layer 332 and the second partition wall electrode layer 342 and transmit the received electrical signal to the light emitting element 350.

[0146] The third insulating layer 530 may be disposed on the first contact electrode 360 ​​and electrically insulate the first contact electrode 360 ​​and the second contact electrode 370 from each other. The third insulating layer 530 may be disposed to cover the first contact electrode 360 ​​while being disposed not to overlap with a partial area of ​​the light emitting element 350, so that the light emitting element 350 may be coupled to (e.g., connected to) the second contact electrode 370. A portion of the third insulating layer 530 may be in contact with the first contact electrode 360 ​​and the second insulating layer 520 at the upper surface of the second insulating layer 520. The third insulating layer 530 may be disposed to cover one end of the first contact electrode 360 ​​at the upper surface of the second insulating layer 520. Therefore, the third insulating layer 530 may protect the first contact electrode 360 ​​and electrically insulate the first contact electrode 360 ​​from the second contact electrode 370.

[0147] One end of the third insulating layer 530 in a direction in which the common electrode 340 is disposed may be aligned with one side surface of the second insulating layer 520 .

[0148] Meanwhile, in some embodiments, the third insulating layer 530 may be omitted from the display device 10. Therefore, the first contact electrode 360 ​​and the second contact electrode 370 may be disposed on the same (e.g., substantially the same) plane, and the first contact electrode 360 ​​and the second contact electrode 370 may be electrically insulated from each other by a passivation layer 550, which will be further described herein below. This will be described in more detail herein below with reference to other embodiments.

[0149] The passivation layer 550 may be formed on the third insulating layer 530 and the second contact electrode 370, and is used to protect the components provided on the insulating substrate layer 310 from the external environment. When the first contact electrode 360 ​​and the second contact electrode 370 are exposed, since the problem of disconnection of the material of the contact electrode due to damage of the electrode may occur, the first contact electrode 360 ​​and the second contact electrode 370 may be covered by the passivation layer 550. For example, the passivation layer 550 may be provided to cover the pixel electrode 330, the common electrode 340, the light emitting element 350, etc. In addition, when the third insulating layer 530 is omitted as described above, the passivation layer 550 may be formed on the first contact electrode 360 ​​and the second contact electrode 370. In this case, the passivation layer 550 may electrically insulate the first contact electrode 360 ​​and the second contact electrode 370 from each other.

[0150] Each of the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the passivation layer 550 described above may include an inorganic insulating material. For example, the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the passivation layer 550 may include an inorganic insulating material such as SiO x 、SiN x 、SiO x N y 、Al 2 O 3 The first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the passivation layer 550 may include the same (e.g., substantially the same) material, but may also include different materials. Various other suitable materials that provide insulating properties to the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the passivation layer 550 may be applied to the first insulating layer 510, the second insulating layer 520, the third insulating layer 530, and the passivation layer 550.

[0151] As described above, the display device 10 according to the embodiment may include a pixel electrode 330, a common electrode 340, and a light emitting element 350 disposed between the pixel electrode 330 and the common electrode 340. The light emitting element 350 may receive an electrical signal from the first contact electrode 360 ​​and the second contact electrode 370 and emit light of a set wavelength band or a specific wavelength band.

[0152] Meanwhile, the light emitting element 350 may be manufactured using an epitaxial growth method on the substrate 110. A seed layer for forming a semiconductor layer may be formed on the substrate 110, a desired semiconductor material may be deposited on the seed layer, and the desired semiconductor material may be grown. Fig. 6A and Figure 6B The structure of the light emitting element 350 according to various embodiments is described in more detail.

[0153] Fig. 6A is a schematic diagram of a light emitting element according to an embodiment.

[0154] refer to Fig. 6A , the light emitting element 350 may include a plurality of semiconductor layers (e.g., a first semiconductor layer 351 and a second semiconductor layer 352) and an active material layer 353 disposed between the plurality of semiconductor layers (e.g., the first semiconductor layer 351 and the second semiconductor layer 352). An electrical signal applied from the pixel electrode 330 and the common electrode 340 may be transmitted to the active material layer 353 through the plurality of semiconductor layers (e.g., the first semiconductor layer 351 and the second semiconductor layer 352), and the light emitting element 350 may emit light.

[0155] For example, the light emitting element 350 may include a first semiconductor layer 351 , a second semiconductor layer 352 , an active material layer 353 disposed between the first semiconductor layer 351 and the second semiconductor layer 352 , and an insulating material layer 358 . Fig. 6A An example is shown in which the light emitting element 350 has a structure in which the first semiconductor layer 351 , the active material layer 353 , and the second semiconductor layer 352 are sequentially stacked in the longitudinal direction.

[0156] The first semiconductor layer 351 may be an n-type semiconductor layer. For example, when the light emitting element 350 emits light in the blue band, the first semiconductor layer 351 may have a chemical formula of In x Al y Ga 1-x-y N (0≤x≤1, 0≤y≤1, 0≤x+y≤1) semiconductor material. For example, the first semiconductor layer 351 may be any one or more selected from InAlGaN, GaN, AlGaN, InGaN, AlN, and InN doped with an n-type material. The first semiconductor layer 351 may be doped with a first conductive dopant, and for example, the first conductive dopant may include Si, Ge, Sn, etc. The length of the first semiconductor layer 351 may be in the range of 1.5 μm to 5 μm, but the embodiment is not limited thereto.

[0157] The second semiconductor layer 352 may be a p-type semiconductor layer. For example, when the light emitting element 350 emits light in the blue band, the second semiconductor layer 352 may have a chemical formula of In x Al y Ga 1-x-yN (0≤x≤1, 0≤y≤1, 0≤x+y≤1) semiconductor material. For example, the second semiconductor layer 352 may be any one or more selected from InAlGaN, GaN, AlGaN, InGaN, AlN, and InN doped with a p-type material. The second semiconductor layer 352 may be doped with a second conductive dopant, and for example, the second conductive dopant may include Mg, Zn, Ca, Se, Ba, etc. The length of the second semiconductor layer 352 may be in the range of 0.08 μm to 0.25 μm, but the embodiment is not limited thereto.

[0158] The active material layer 353 may be disposed between the first semiconductor layer 351 and the second semiconductor layer 352, and include a material of a single quantum well structure or a multi-quantum well structure. When the active material layer 353 includes a material of a multi-quantum well structure, the active material layer 353 may have a structure in which a plurality of quantum layers and well layers are alternately stacked. According to an electrical signal applied to the active material layer 353 through the first semiconductor layer 351 and the second semiconductor layer 352, the active material layer 353 may emit light due to the recombination of electron-hole pairs. For example, when the active material layer 353 emits light in a blue band, the active material layer 353 may include a material such as AlGaN and / or AlInGaN. In some embodiments, when the active material layer 353 has a multi-quantum well structure in which quantum layers and well layers are alternately stacked, the quantum layers may include materials such as AlGaN and / or AlInGaN, and the well layers may include materials such as GaN and / or AlGaN. However, embodiments are not limited thereto. The active material layer 353 may also have a structure in which a semiconductor material having a high band gap energy and a semiconductor material having a low band gap energy are alternately stacked, and may include different semiconductor materials in Group 3 or Group 5 according to the wavelength band of the emitted light. Therefore, the light emitted by the active material layer 353 is not limited to the light in the blue wavelength band, and in some cases, the active material layer 353 may also emit light in the red wavelength band or the green wavelength band. The length of the active material layer 353 may be in the range of 0.05 μm to 0.25 μm, but the embodiment is not limited thereto.

[0159] Light emitted from the active material layer 353 may be emitted not only to the longitudinal outer surface of the light emitting element 350 but also to both side surfaces of the light emitting element 350. For example, the directivity of light emitted from the active material layer 353 is not limited to a single direction.

[0160] The insulating material layer 358 may be formed at an outer portion of the light emitting element 350 and protect the light emitting element 350. For example, the insulating material layer 358 may be formed to surround the side of the light emitting element 350, and may not be formed at both longitudinal ends of the light emitting element 350, for example, both ends of the light emitting element 350 where the first semiconductor layer 351 and the second semiconductor layer 352 are disposed. However, the embodiment is not limited thereto. The insulating material layer 358 may include a material having an insulating property, for example, SiO x 、SiN x 、SiO x N x 、AlN、Al 2 O 3 Etc. Therefore, an electrical short circuit that may occur when the active material layer 353 is in direct contact with the pixel electrode 330 or the common electrode 340 can be prevented or reduced. In addition, since the insulating material layer 358 surrounds the active material layer 353 and protects the outer surface of the light emitting element 350, a decrease in light emitting efficiency can be prevented or reduced.

[0161] The thickness of the insulating material layer 358 may be in the range of 0.5 μm to 1.5 μm, but the embodiment is not limited thereto.

[0162] The light emitting element 350 may have a cylindrical shape. However, the shape of the light emitting element 350 is not limited thereto, and the light emitting element 350 may have various other suitable shapes such as a cubic shape, a rectangular parallelepiped shape, a hexagonal column shape, etc. The length of the light emitting element 350 may be in the range of 1 μm to 10 μm or 2 μm to 5 μm. For example, the light emitting element 350 may have a length of about 4 μm. The diameter of the light emitting element 350 may be in the range of 400 nm to 700 nm. In some embodiments, the light emitting element 350 may have a diameter of about 500 nm.

[0163] FIG. 6B to FIG. 6C is a schematic diagram of a light emitting element according to another embodiment.

[0164] refer to FIG. 6B to FIG. 6C The light emitting elements 350 ′ and 350 ″ may further include electrode layers 356 and 357 disposed at at least one of both side surfaces where the first semiconductor layer 351 and the second semiconductor layer 352 are disposed.

[0165] Figure 6B An example is shown in which the light emitting element 350 ′ further includes an electrode layer 357 provided only at the second semiconductor layer 352 . Figure 6CAn example is shown in which the light emitting element 350" further includes electrode layers 356 and 357 respectively provided at the first semiconductor layer 351 and the second semiconductor layer 352. For convenience of description, the electrode layer formed at one side surface where the first semiconductor layer 351 is provided will be referred to as the first electrode layer 356, and the electrode layer formed at the other side surface where the second semiconductor layer 352 is provided will be referred to as the second electrode layer 357. However, the embodiment is not limited thereto, and any electrode layer may also be referred to as the first electrode layer.

[0166] The light emitting elements 350' and 350" according to various embodiments may include at least one of the first electrode layer 356 and the second electrode layer 357. In this case, the insulating material layer 358 may extend in the longitudinal direction and be formed to cover the first electrode layer 356 and the second electrode layer 357. However, the embodiments are not limited thereto. The insulating material layer 358 may cover only the first semiconductor layer 351, the active material layer 353, and the second semiconductor layer 352, or only a portion of the outer surfaces of the first electrode layer 356 and the second electrode layer 357, so that the outer surfaces of the first electrode layer 356 and the second electrode layer 357 are partially exposed.

[0167] The first electrode layer 356 and the second electrode layer 357 may be ohmic contact electrodes. However, the embodiment is not limited thereto, and the first electrode layer 356 and the second electrode layer 357 may also be Schottky contact electrodes. The first electrode layer 356 and the second electrode layer 357 may include a metal having conductivity. For example, the first electrode layer 356 and the second electrode layer 357 may include at least one of Al, Ti, In, Au, and Ag. The first electrode layer 356 and the second electrode layer 357 may include the same (e.g., substantially the same) material or include different materials. However, the embodiment is not limited thereto.

[0168] In the following, reference will be made to Figures 7 to 10 A method of manufacturing the display device 10 according to the embodiment will be described. Figures 7 to 10 The structure of the common line 600 and the pixel line 700 provided with the display device 10, the alignment of the light emitting element 350, etc. are described in more detail.

[0169] Figures 7 to 10 1 is a plan view schematically showing a part of a method for manufacturing a display device according to an embodiment. Figure 1 as well as Figures 7 to 10 Provide a description.

[0170] First, refer to Figure 7, an anode cathode layer on which a plurality of lines 600 and 700 are disposed is formed on the insulating substrate layer 310. Forming the plurality of lines 600 and 700 may include performing a general mask process and patterning a metal, an organic material, etc. to form the plurality of lines 600 and 700. For example, a metal layer may be deposited on the insulating substrate layer 310, and the deposited metal layer may be patterned to form an anode cathode layer on which a plurality of lines 600 and 700 are disposed. In an exemplary embodiment, the plurality of lines 600 and 700 may include a common line 600 and a pixel line 700.

[0171] As described above, the display device 10 may include an area defined by the light-emitting area LA and the non-light-emitting area NLA. Therefore, patterning is performed so that the common trunk line 650 and the pixel trunk line 750 are arranged on the insulating substrate layer 310 to be spaced apart from each other in the non-light-emitting area NLA. In an exemplary embodiment, the common trunk line 650 may be arranged in a first non-light-emitting area NLA1 arranged below the light-emitting area LA in the non-light-emitting area NLA, and the pixel trunk line 750 may be arranged in a second non-light-emitting area NLA2 arranged above the light-emitting area LA in the non-light-emitting area NLA. Each of the common trunk line 650 and the pixel trunk line 750 may extend in the first direction D1. Since the more detailed arrangement structure of the common trunk line 650 and the pixel trunk line 750 is the same as that of the above reference Figure 1 The described arrangement structures are the same, so their redundant descriptions will not be repeated here.

[0172] Branch lines (e.g., common branch patterns 600P and pixel branch patterns 700P) branched and extended from each trunk line may be disposed in the light emitting area LA of the insulating substrate layer 310. At least one common branch pattern 600P may be spaced apart from other common branch patterns 600P of the common trunk line 650 and branched from the common trunk line 650. The common branch pattern 600P may extend in the second direction D2, which is a direction crossing the first direction D1, and terminate while being spaced apart from the pixel trunk line 750. Although the common branch pattern 600P is Figure 7 650 as branching upward from a common trunk line 650, but the embodiment is not limited thereto.

[0173] At least one pixel branch pattern 700P may be spaced apart from other pixel branch patterns 700P of the pixel trunk line 750 and branch from the pixel trunk line 750. The pixel branch pattern 700P may extend in the second direction D2, which is a direction crossing the first direction D1, and terminate while being spaced apart from the common trunk line 650. Figure 7 7 and 8 are shown as branching from the pixel trunk line 750 toward the bottom, but the embodiment is not limited thereto.

[0174] Two or more common branch patterns 600P and two or more pixel branch patterns 700P form pairs and branch, and the common branch patterns 600P and the pixel branch patterns 700P are arranged opposite to each other and spaced apart from each other. With respect to the common branch patterns 600P and the pixel branch patterns 700P arranged in the light emitting area LA of the insulating substrate layer 310, the patterns forming a pair may be alternately arranged in the first direction D1. The area where the common branch patterns 600P and the pixel branch patterns 700P are spaced apart may be an area where the light emitting elements 350 are aligned, and the area where the common branch patterns 600P and the pixel branch patterns 700P form pairs and are spaced apart may be an area where the light emitting elements 350 are not aligned. A plurality of light emitting elements 350 may be aligned in the area where the common branch patterns 600P and the pixel branch patterns 700P are spaced apart from each other, and the common branch lines 610, 620, and 630 and the pixel branch lines 710, 720, and 730 may be arranged in the area. Since the structures, arrangements, etc. of the common branch pattern 600P and the pixel branch pattern 700P are the same (eg, substantially the same) as those of the common branch lines 610 , 620 , and 630 and the pixel branch lines 710 , 720 , and 730 , redundant descriptions thereof will not be repeated here.

[0175] Next, refer to Figure 8 , a plurality of light-emitting elements 350 are aligned in a region where the common branch pattern 600P and the pixel branch pattern 700P are spaced apart from each other. In this case, the plurality of light-emitting elements 350 may emit light of the same (e.g., substantially the same) color, but the embodiment is not limited thereto. In an exemplary embodiment, the light-emitting element 350 may include a first light-emitting element 350a configured to emit red light, a second light-emitting element 350b configured to emit green light, and a third light-emitting element 350c configured to emit blue light. The first light-emitting element 350a, the second light-emitting element 350b, and the third light-emitting element 350c may be aligned in regions where different common branch patterns 600P and pixel branch patterns 700P are spaced apart.

[0176] For example, the first light emitting element 350a may be aligned between the first pixel branch pattern 710P and the first common branch pattern 610P, the second light emitting element 350b may be aligned between the second pixel branch pattern 720P and the second common branch pattern 620P, and the third light emitting element 350c may be aligned between the third pixel branch pattern 730P and the third common branch pattern 630P. Therefore, the first light emitting element 350a, the second light emitting element 350b, and the third light emitting element 350c may configure the first pixel PX1, the second pixel PX2, and the third pixel PX3, respectively.

[0177] When the light emitting element 350 is aligned as described above, an electric field may be formed between the common branch pattern 600P and the pixel branch pattern 700P, and dielectrophoresis may be used. Figures 9 and 10 This is described in more detail below. Fig. 9 The process of aligning a light emitting element in a display device is schematically shown, and Fig.10 The capacitance formed in a display device due to an electric field is schematically shown.

[0178] refer to Fig. 9 , a solution S containing the light emitting element 350 may be applied on the display device 10, an electric field E may be formed, and a dielectrophoretic force may be applied to the light emitting element 350 to align the light emitting element 350. At least some of the plurality of lines 600 and 700 (e.g., the common branch pattern 600P and the pixel branch pattern 700P) disposed on the insulating substrate layer 310 may be used to form the electric field E in the pixel PX to align the light emitting element 350. The electric field E may apply a dielectrophoretic force to the light emitting element 350 contained in the solution S applied on the insulating substrate layer 310. In some embodiments, the dielectrophoretic force may be applied to the light emitting element 350 so that the light emitting element 350 is aligned with the ends of the common branch pattern 600P and the pixel branch pattern 700P facing each other.

[0179] As mentioned above Figure 5 As described, the first partition wall 381 and the second partition wall 382 may be disposed on the insulating substrate layer 310, and the partition wall reflective layer (e.g., the first partition wall reflective layer 331 and the second partition wall reflective layer 341) and the partition wall electrode layer (e.g., the first partition wall electrode layer 332 and the second partition wall electrode layer 342) may be disposed on the first partition wall 381 and the second partition wall 382. In this case, the partition wall reflective layer and the partition wall electrode layer may configure the common branch pattern 600P and the pixel branch pattern 700P on the first partition wall 381 and the second partition wall 382. However, for convenience of description, Fig. 9 6 shows that a common branch pattern 600P including a single layer and a pixel branch pattern 700P including a single layer are respectively formed on the first partition wall 381 and the second partition wall 382. However, the embodiment is not limited thereto, and it should be understood with reference to other drawings that the above-described case is within the scope of the present disclosure.

[0180] refer to Fig.10 , the alignment area AA for aligning the light emitting element 350 and the non-alignment area NAA for not aligning the light emitting element 350 may be defined between the common branch pattern 600P and the pixel branch pattern 700P that are disposed to be spaced apart from each other. When one end of the common branch pattern 600P is grounded (GND) and AC power is applied to the pixel branch pattern 700P, a capacitance C due to an electric field may be formed in a region between the common branch pattern 600P and the pixel branch pattern 700P that are disposed to be spaced apart from each other. For example, the capacitance C due to AC power may be formed only in the alignment area AA and may not be formed in Fig.10 in the non-aligned area NAA or area D.

[0181] AC power may be applied from a signal applying pad PAD coupled to (e.g., connected to) one end of the pixel trunk line 750 and transmitted to the pixel branch pattern 700P. The intensity of the voltage of the AC power may gradually weaken toward the other side of the pixel trunk line 750 extending in the first direction D1 or toward the end of the pixel branch pattern 700P branched in the second direction D2.

[0182] According to an embodiment, at least some of the common branch patterns 600P and the pixel branch patterns 700P may be continuously disposed in the display device 10, so that the capacitance C caused by the AC power is formed only in the alignment area AA, and not in the non-alignment area NAA. Therefore, a drop in the voltage of the AC power may be minimized or reduced, and the AC power may be uniformly (e.g., substantially uniformly) applied to the front surface of the display device 10. Therefore, alignment failure may be resolved by aligning the light emitting element 350 only in the alignment area AA and maintaining the minimum voltage intensity required to align the light emitting element 350.

[0183] In some embodiments, at least a portion of the pixel trunk 750 is patterned to form a trunk separation line 750a and a trunk spacer 750b. Patterning may include a general mask process, but embodiments are not limited thereto. Patterning may also include disconnecting the line using a laser. The trunk separation line 750a may be electrically separated from each other, coupled to (e.g., connected to) pixel branches 710, 720, and 730, and different electrical signals may be applied to the trunk separation line 750a. A more detailed description thereof has been provided herein above.

[0184] When the pixel trunk line 750 is separated due to the trunk separation line 750a, each pixel PX may have a structure of a first type pixel Flip1 or a second type pixel Flip2. For example, the first pixel branch line 710 and the first common branch line 610 have the same (e.g., substantially the same) structure as the first type pixel Flip1. In the case of the second pixel PX2 adjacent to the first pixel PX1, the second common branch line 620 and the second pixel branch line 720 have the structure of the second type pixel Flip2. The first pixel PX1 and the second pixel PX2 have a symmetrical structure (e.g., a substantially symmetrical structure) with respect to the boundary between the first pixel PX1 and the second pixel PX2, and the first pixel branch line 710 and the second common branch line 620 are respectively arranged at the left and right sides of the first common branch line 610. The capacitance C caused by the AC power is not generated between the first common branch line 610 and the second common branch line 620 (or substantially not generated between the first common branch line 610 and the second common branch line 620).

[0185] In the case of the second pixel branch line 720, the third pixel branch line 730 may be disposed at the right side of the second pixel branch line 720 in the drawing, and the third pixel branch line 730 and the third common branch line 630 may be disposed in the structure of the first type pixel Flip1. The second pixel branch line 720 and the third common branch line 630 may be disposed at the left side and the right side of the third pixel branch line 730, respectively. Since no capacitance caused by AC power is generated between the second pixel branch line 720 and the third pixel branch line 730 (or substantially no capacitance is generated between the second pixel branch line 720 and the third pixel branch line 730), this is because the light emitting element 350 is not aligned between the second pixel branch line 720 and the third pixel branch line 730.

[0186] The method described above can be used to produce Figure 1 Display device 10. In the display device 10, some of the common branches 610, 620, 630 and the pixel branches 710, 720, 730 may be continuously branched. In the pixels PX provided with the common branches 610, 620, 630 and the pixel branches 710, 720, 730, the arrangement structure of the branches may be symmetrical (e.g., substantially symmetrical) relative to the boundaries between the pixels PX. Therefore, when aligning the light emitting element 350, the formation of unnecessary capacitance C in the non-alignment area NAA may be prevented or reduced, and the drop in the voltage of the AC power may be minimized or reduced. Therefore, the light emitting element 350 may be uniformly (e.g., substantially uniformly) aligned in the entire (e.g., substantially entire) area of ​​the display device 10.

[0187] Hereinafter, other embodiments of the present disclosure will be described. Examples of possible structures, arrangement relationships, etc. of a plurality of lines provided in the display device 10 will be described in other embodiments to be described with reference to other drawings. However, the present disclosure is not necessarily limited thereto.

[0188] First, refer to Figure 11 to Figure 12 The structure and arrangement of the separation lines according to another embodiment are described.

[0189] Figure 11 to Figure 12 is a plan view of a display device according to another embodiment.

[0190] refer to Fig.11 In a display device 10_1 according to another embodiment, the pixel branch lines 710_1, 720_1, and 730_1 may include branch separation lines 710a_1, 720a_1, and 730a_1, respectively. In addition, the pixel branch lines 710_1, 720_1, and 730_1 include branch spacers 710b_1, 720b_1, and 730b_1, respectively, and the branch separation lines 710a_1, 720a_1, and 730a_1 may be electrically separated from the pixel trunk line 750_1.

[0191] For example, the first pixel branch line 710_1 of the first pixel PX1 may be electrically separated from the pixel trunk line 750_1. The first pixel branch line 710_1 may include a first branch separation line 710a_1 and a first branch spacer 710b_1, and the first branch spacer 710b_1 may be disposed between the first branch separation line 710a_1 and the pixel trunk line 750_1. The first branch separation line 710a_1 and the first branch spacer 710b_1 may be aligned in the second direction D2 in which the first pixel branch line 710_1 extends.

[0192] The second branch separation line 720a_1 and the second branch interval 720b_1 may have the same (eg, substantially the same) structure as above, and the third branch separation line 730a_1 and the third branch interval 730b_1 may have the same (eg, substantially the same) structure as above. A redundant description thereof will not be repeated here.

[0193] The branch separation lines 710a_1, 720a_1, and 730a_1 may be electrically separated from the pixel trunk line 750_1. In some embodiments, the branch separation lines 710a_1, 720a_1, and 730a_1 may be electrically contacted with different thin film transistors. The branch separation lines 710a_1, 720a_1, and 730a_1 may receive electrical signals different from electrical signals received by other branch separation lines, and the branch separation lines 710a_1, 720a_1, and 730a_1 and the common branch lines 610_1, 620_1, and 630_1 may configure different pixels, and different light emitting elements 350 disposed between the branch separation lines 710a_1, 720a_1, and 730a_1 and the common branch lines 610_1, 620_1, and 630_1 may operate independently.

[0194] Next, refer to Fig.12 , in the display device 10_2 according to still another embodiment, the pixel branch lines 710_2, 720_2, and 730_2 may include one or more of the branch separation lines 710a_2, 720a_2, and 730a_2.

[0195] For example, the first pixel branch line 710_2 of the first pixel PX1 may be electrically separated from the pixel trunk line 750_2. The first pixel branch line 710_2 may include a plurality of first branch separation lines 710a_2 and a plurality of first branch spacing portions 710b_2. The first branch spacing portion 710b_2 may be disposed between the first branch separation line 710a_2 and the pixel trunk line 750_2. The first branch spacing portion 710b_2 may also be disposed between the first branch separation lines 710a_2. The plurality of first branch separation lines 710a_2 and the first branch spacing portion 710b_2 may be aligned in the second direction D2 in which the first pixel branch line 710_2 extends.

[0196] Therefore, the plurality of first branch separation lines 710a_2 and the first common branch line 610_2 disposed opposite to and spaced apart from the plurality of first branch separation lines 710a_2 may configure a single pixel. Fig.11 A light emitting element 350 configured to emit light of the same (eg, substantially the same) color is disposed between the first pixel branch line 710_2 and the first common branch line 610_2, but the light emitting element 350 may be independently operated by a plurality of first branch separation lines 710a_2.

[0197] The second branch separation line 720a_2 of the second pixel PX2 and the third branch separation line 730a_2 of the third pixel PX3 may also be the same as described above, and other structures are the same as those described above. Fig.11 The structures described are the same. The redundant description will not be repeated here.

[0198] Therefore, as shown in the drawings, a plurality of type pixels (e.g., first type pixel Flip1 and second type pixel Flip2) may be arranged in the first direction D1 and the second direction D2. For example, the first type pixel Flip1 may be arranged in the second direction D2 in the first pixel PX1 configured to display red (R). The second type pixel Flip2 may be arranged in the second direction D2 in the second pixel PX2, which is adjacent to the first pixel PX1 in the first direction D1. Similarly, the first type pixel Flip1 and the second type pixel Flip2, each arranged in the second direction D2, may be arranged in the first pixel PX1 and the fourth pixel PX4 configured to display red (R). At the boundary between different type pixels (e.g., the first type pixel Flip1 and the second type pixel Flip2), a pixel branch line or a common branch line which is a branch line of the same (e.g., substantially the same) type is set, and therefore, a capacitance caused by AC power is not formed (or substantially not formed).

[0199] On the other hand, in some cases, the same (e.g., substantially the same) type pixels (first type pixel Flip1 or second type pixel Flip2) arranged in the second direction D2 may share some lines, e.g., common branches. As shown in the drawings, the pixel branches as different types of branches may be electrically separated, and the same (e.g., substantially the same) type pixels arranged in the second direction D2 may also be operated independently.

[0200] Figure 7The ends of the pixel branch patterns 700P shown in the figure, which are arranged adjacent to each other and terminated while being spaced apart from the common trunk line 650, may be coupled (e.g., connected) to each other. When the end of any pixel branch pattern 700P is coupled (e.g., connected) to another pixel branch pattern 700P spaced apart from it by a small gap, the average voltage drop of the AC power applied from the pixel trunk line 750 may be reduced. This will refer to Figures 13 to 15 This is described in more detail herein below.

[0201] Figures 13 to 15 is a cross-sectional view schematically showing a display device according to still another embodiment and a method of manufacturing the display device.

[0202] refer to Figures 13 to 15 During the manufacture of the display device 10_3 according to yet another embodiment (see Figure 5 ), ends of at least some of the arbitrary pixel branch patterns 700P_3 may be coupled (eg, connected) to each other at the anode cathode layer formed at the insulating substrate layer 310. Ends of arbitrary common branch line patterns 600P_3 may also be coupled (eg, connected) to each other.

[0203] For example, first, Fig.14 As shown in FIG. 1 , two or more common branch line patterns 600P_3 and two or more pixel branch patterns 700P_3 may form a pair and branch. Ends of the patterns forming a pair may be coupled (eg, connected) to each other.

[0204] The common branch pattern 600P_3 is spaced apart from other common branch patterns 600P_3 of the common trunk line 650_3 and branches from the common trunk line 650_3. The common branch pattern 600P_3 terminates while being spaced apart from the pixel trunk line 750_3. The ends of the common branch pattern 600P_3 opposite to the pixel trunk line 750_3 of the pattern branched with a relatively small gap may be coupled (e.g., connected) to each other.

[0205] The pixel branch pattern 700P_3 is spaced apart from other pixel branch patterns 700P_3 of the pixel trunk line 750_3 and branches from the pixel trunk line 750_3. The pixel branch pattern 700P_3 terminates while being spaced apart from the common trunk line 650_3. Ends of the pixel branch pattern 700P_3 opposite to the common trunk line 650_3 of the pattern, which are branched with a relatively small gap, may be coupled (e.g., connected) to each other.

[0206] The AC power applied through the pixel trunk line 750_3 may be gradually weakened along the pixel branch pattern 700P_3. Fig.13When the pixel branch pattern 700P_3 is connected to each other (e.g., connected) as shown in , the voltage drop of the AC power can be restored at the connection end (e.g., the connection end). For example, the average voltage drop of the AC power formed in the direction in which the pixel branch pattern 700P_3 extends can be reduced. Therefore, AC power at a level similar to that applied to the branch pattern set adjacent to the AC power source can also be applied to the branch pattern set at a relatively long distance from the AC power source. Therefore, at the front surface of the display device 10_3, the light emitting element 350 can be uniformly (e.g., substantially uniformly) aligned.

[0207] Next, refer to Fig.14 , a plurality of light emitting elements 350 are aligned in a region where the common branch pattern 600P_3 and the pixel branch pattern 700P_3 are spaced apart from each other. The common branch pattern 600P_3 and the pixel branch pattern 700P_3 can align the light emitting elements 350 and configure the common branch lines 610P_3, 620P_3 and 630P_3 and the pixel branch lines 710P_3, 720P_3 and 730P_3. Figure 8 A detailed description thereof is provided.

[0208] refer to Fig.15 , the pixel branch lines 710_3, 720_3, and 730_3 are patterned to form branch separation lines 710a_3, 720a_3, and 730a_3. Fig.15 In the case of Fig.12 As in the embodiment of the present invention, the pixel branch lines 710_3, 720_3 and 730_3 may include a plurality of branch separation lines (e.g., a first branch separation line 710a_3, a second branch separation line 720a_3 and a third branch separation line 730a_3) and branch spacing parts 710b_3, 720b_3 and 730b_3. The branch separation lines 710a_3, 720a_3 and 730a_3 may be arranged to be opposite to the common branch lines 610_3, 620_3 and 630_3, spaced apart from the common branch lines 610_3, 620_3 and 630_3 and to configure a single pixel. Fig.12 A more detailed description thereof is provided, and therefore, a redundant description thereof will not be repeated here.

[0209] However, in Fig.15 In the case of , the ends of the pixel branch pattern may be coupled (eg, connected) to each other. The coupled ends (eg, connected ends) may be electrically separated, and the plurality of pixel branch lines 710_3, 720_3, and 730_3 may be configured with branch separation lines 710a_3, 720a_3, and 730a_3, respectively. Fig.15As shown in , the lengths of the branch spacers 710b_3', 720b_3', and 730b_3' provided at the coupling end (e.g., the connection end) may be shorter than the gaps spaced apart by adjacent pixel branches (e.g., the second pixel branch 720_3 and the third pixel branch 730_3). Therefore, a portion of the second branch separation line 720a_3 and a portion of the third branch separation line 730a_3 provided at the coupling end (e.g., the connection end) may protrude in the direction in which the second branch separation line 720a_3 and the third branch separation line 730a_3 are provided to be opposite to each other. However, the embodiment is not limited thereto, and the lengths of the branch spacers 710b_3', 720b_3', and 730b_3' provided at the coupling end (e.g., the connection end) may be equal to the gaps spaced apart by adjacent pixel branches. In this case, the second branch separation line 720a_3 and the third branch separation line 730a_3 disposed at the coupling end (eg, the connection end) may be substantially aligned with another second branch separation line 720a_3 and another third branch separation line 730a_3 without protruding.

[0210] However, the embodiment is not limited thereto. Fig.15 In the case of, although the pixel branch lines 710_3, 720_3 and 730_3 are shown as including a plurality of branch separation lines 710a_3, 720a_3 and 730a_3, in some cases, the pixel trunk line 750_3 may include Figure 1 In addition, as shown in FIG. Fig.11 As in the display device 10_1 in FIG. 1 , each of the pixel branch lines 710_3, 720_3, and 730_3 may include only one branch separation line. As long as the ends of the pixel branch lines 710_3, 720_3, and 730_3 that are coupled to each other (e.g., connected) are patterned and adjacent pixels are electrically separated, the structure is not particularly limited. Since a description of the structure has been provided herein above, a redundant description thereof will not be repeated here.

[0211] In a display device according to an embodiment, pixels having different line structures are arranged so that alignment signal lines of adjacent pixels can have a symmetrical structure (e.g., a substantially symmetrical structure). Therefore, by removing the capacitance that may be formed between the alignment signal lines of adjacent pixels when power is applied, a drop in alignment voltage can be prevented or reduced. By preventing or reducing a drop in alignment voltage during manufacture of the display device, the light emitting element can be uniformly (e.g., substantially uniformly) aligned in the display device.

[0212] For ease of explanation, spatially relative terms such as "below," "beneath," "below," "under," "above," "on," and the like may be used herein to describe the relationship of an element or feature to another element (or elements) or another feature (or features) as shown in the figures. It will be understood that, in addition to the orientation depicted in the figures, the spatially relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, the elements described as being "below" or "below" or "below" other elements or features will then be oriented to be "above" the other elements or features. Therefore, the exemplary terms "below" and "under" may cover both above and below orientations. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0213] The terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, as used herein, the singular forms "one" and "an" are intended to also include plural forms. It will also be understood that the terms "comprises", "comprising", "includes" and "including" when used in this specification indicate the presence of the features, wholes, actions, operations, elements and / or components described, but do not exclude the presence or addition of one or more other features, wholes, actions, operations, elements, components and / or combinations thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the related listed items. When an expression such as "at least one of..." is located after a column of elements, the elements of the entire list are modified, without modifying the individual elements in the list.

[0214] As used herein, the terms "substantially," "approximately," and the like are used as approximate terms rather than as terms of degree, and are intended to allow for inherent deviations in measurements or calculations that would be recognized by a person of ordinary skill in the art. In addition, when describing embodiments of the present disclosure, the use of "may" means "one or more embodiments of the present disclosure." As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively. Moreover, the term "exemplary" is intended to mean an example or illustration.

[0215] In addition, any numerical range recorded herein is intended to include all sub-ranges of the same numerical precision contained in the recorded range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the recorded minimum value 1.0 and the recorded maximum value 10.0 (and including 1.0 and 10.0), that is, for example, a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit recorded herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit recorded in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly record any sub-range contained in the range explicitly recorded herein.

[0216] In summarizing the detailed description, those skilled in the art will appreciate that many changes and modifications may be made to the disclosed embodiments without departing substantially from the principles of the present disclosure. Therefore, the embodiments of the present disclosure described are used only in a general and descriptive sense and not for a limiting purpose.

Claims

1. Display equipment, including: first pixels, each of the first pixels including a first pixel branch line extending in a first direction at one side of the first pixel and a first common branch line extending in the first direction at another side opposite to the one side; second pixels, each of the second pixels including a second common branch line extending in the first direction at one side of the second pixel and a second pixel branch line extending in the first direction at another side of the second pixel opposite to the one side of the second pixel; A first light emitting element, located between the first pixel branch line and the first common branch line; as well as A second light emitting element is located between the second common branch line and the second pixel branch line, wherein the first pixels and the second pixels are arranged in a second direction intersecting the first direction, Wherein, the first pixel further includes a first branch separation line, the first branch separation line extends in the second direction and is connected to the first pixel branch line, Wherein, the second pixel further includes a second branch separation line, the second branch separation line extends in the second direction and is connected to the second pixel branch line, wherein the first branch separation line and the second branch separation line are aligned in the second direction, wherein the first branch separation line and the second branch separation line face each other in the second direction, wherein at least one of the first pixels and at least one of the second pixels are alternately arranged in the second direction, and Wherein, at least a portion of the first common branch line is electrically connected to a portion of the second common branch line.

2. The display device according to claim 1, wherein: The second common branch line is spaced apart from the second pixel branch line along the second direction, The display device further includes a third pixel branch line spaced apart from the second pixel branch line along the second direction.

3. The display device according to claim 2, wherein: At least a portion of the second pixel branch line and a portion of the third pixel branch line protrude at one end portion in the first direction in a direction in which the second pixel branch line and the third pixel branch line face each other.

4. The display device according to claim 3, wherein: At least one of the second pixels includes the first light emitting element.

5. Display equipment, including: A pixel array, comprising first pixels and second pixels arranged alternately, the pixel array extending in a first direction, wherein: Each of the first pixel and the second pixel includes a pixel electrode, a common electrode opposite to the pixel electrode, and a light emitting element located between the pixel electrode and the common electrode; In the first pixel, the pixel electrode is located at one side of the common electrode in the first direction; and In the second pixel, the pixel electrode is located at the other side of the common electrode in the first direction, The display device further comprises a pixel branch line, wherein the pixel branch line extends in a second direction intersecting the first direction, Wherein, in the second direction, the pixel branch line is spaced apart from the pixel electrode and aligned with the pixel electrode.

6. The display device according to claim 5, wherein: The pixel electrode and the common electrode of the first pixel and the second pixel respectively include portions extending in the second direction.

7. The display device according to claim 6, further comprising a common trunk extending in the first direction, wherein: The common electrode of the first pixel includes a first common branch pattern; The common electrode of the second pixel adjacent to the first pixel includes a second common branch pattern opposite to the first common branch pattern and separated from the first common branch pattern; as well as The first common branch pattern and the second common branch pattern are coupled to the common trunk line.

8. The display device according to claim 7, wherein: An end portion of the first common branch pattern and an end portion of the second common branch pattern are coupled to each other.

9. A method for manufacturing a display device, the method comprising: forming a conductive layer on a substrate, the conductive layer comprising a first pixel line extending in a first direction, a second pixel line located at one side of the first pixel line in a second direction crossing the first direction, a pixel branch line extending in the second direction and connected to the first pixel line and the second pixel line, and a first common line located at another side of the first pixel line in a direction opposite to the one side; aligning a light emitting element between the first pixel line and the first common line; as well as forming a separation line by separating the pixel branch line, the first pixel line and the second pixel line, The forming of the separation line includes patterning a region where the pixel branch line is connected to the first pixel line and a region where the pixel branch line is connected to the second pixel line and electrically separating the first pixel line from the second pixel line.

10. The method according to claim 9, wherein: The conductive layer further includes a second common line located in a direction opposite to a direction in which the first pixel line is disposed in relation to the second pixel line; and The second pixel line and the second common line are spaced apart from each other.

11. The method according to claim 10, wherein: The conductive layer further includes a common trunk extending in the second direction; and The first common line and the second common line extend in the first direction and are coupled to the common trunk line.

12. The method according to claim 11, wherein: Aligning the light emitting element comprises: grounding one end of the common trunk line and applying alignment power to the first pixel line and the second pixel line; and A capacitor is formed between the first pixel line and the first common line.

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