Display device and electronic device comprising same

Abstract

This display device may comprise: a substrate including a display area and a peripheral area disposed around the display area; a power supply line which is disposed in the peripheral area and through which a low power-supply voltage is supplied; a plurality of first electrodes which are disposed in the display area and to which a high power-supply voltage is supplied; a pixel defining layer which is disposed on the first electrodes and exposes a portion of each of the first electrodes to define light-emitting areas; an auxiliary connection electrode which is disposed on the pixel defining layer and electrically connected to the power supply line; an electrode layer which is disposed on the first electrodes and the auxiliary connection electrode and electrically connected to the auxiliary connection electrode, and to which the low power-supply voltage is supplied; and a separator which is disposed on the auxiliary connection electrode, overlaps a portion of the auxiliary connection electrode, and separates, in the display area, the electrode layer into a plurality of second electrodes spaced apart from each other.

Description

Display device and electronic device including same

[0001] The present invention relates to a display device that provides visual information and an electronic device including the same.

[0002] As information technology advances, the importance of display devices, which serve as a link between users and information, is increasingly recognized. These display devices include light-emitting elements and pixel driving circuitry for driving the light-emitting elements. The light-emitting elements are driven by the pixel driving circuitry to emit light. To improve the reliability of these display devices, ongoing research is being conducted on the connection between the light-emitting elements and the pixel driving circuitry.

[0003] One object of the present invention is to provide a display device with improved display quality.

[0004] Another object of the present invention is to provide an electronic device including the display device.

[0005] However, the present invention is not limited to the above-described purposes, and may be expanded in various ways without departing from the spirit and scope of the present invention.

[0006] In order to achieve the above-described object of the present invention, a display device according to exemplary embodiments of the present invention may include a substrate including a display area and a peripheral area located around the display area, a power supply line disposed in the peripheral area and supplied with a low power voltage, a plurality of first electrodes disposed in the display area and supplied with a high power voltage, a pixel defining layer disposed on the first electrodes and exposing a portion of each of the first electrodes to define light-emitting areas, an auxiliary connection electrode disposed on the pixel defining layer and electrically connected to the power supply line, an electrode layer disposed on the first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with the low power voltage, and a separator disposed on the auxiliary connection electrode, overlapping a portion of the auxiliary connection electrode, and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

[0007] In one embodiment, the display device may further include an auxiliary electrode disposed in the display area and electrically connected to the power supply line, and an auxiliary connection pattern disposed between the auxiliary electrode and the auxiliary connection electrode, the auxiliary electrode connection portion being connected to the auxiliary electrode, and a light-emitting connection portion being connected to the auxiliary connection electrode.

[0008] In one embodiment, on a plane, the light-emitting connection may be located between the light-emitting region and the separator.

[0009] In one embodiment, on a plane, the light-emitting connection portion may overlap the separator.

[0010] In one embodiment, the pixel defining film can define first to third light-emitting regions that emit light of different colors. The second electrodes separated from each other by the separator can overlap the first to third light-emitting regions, respectively.

[0011] In one embodiment, the separator may have a mesh structure surrounding each of the second electrodes on a plane.

[0012] In one embodiment, the auxiliary connecting electrode may have a mesh structure surrounding each of the first to third light-emitting regions on a plane.

[0013] In one embodiment, the planar profile of the auxiliary connecting electrode may correspond to the planar profile of the separator.

[0014] In one embodiment, the width of the auxiliary connecting electrode may be greater than the width of the separator.

[0015] In one embodiment, the separator overlaps the central portion of the auxiliary connecting electrode in the width direction and exposes both sides of the auxiliary connecting electrode in the width direction. In the display area, the second electrodes can contact the both sides of the auxiliary connecting electrode exposed by the separator.

[0016] In one embodiment, the display device may further include a voltage transmission electrode disposed on the power supply line and including a power line connection portion connected to the power supply line and an auxiliary connection electrode connection portion connected to the auxiliary connection electrode.

[0017] In one embodiment, the voltage transmitting electrode may be disposed on the same layer as the second electrodes. The separator may be disposed at a boundary between the display area and the peripheral area, and the separator may separate the electrode layer into the second electrodes disposed in the display area and the voltage transmitting electrode disposed in the peripheral area.

[0018] In one embodiment, the edge portion of the separator may be positioned at a boundary between the display area and the peripheral area. The edge portion of the auxiliary connection electrode may be positioned at the boundary between the display area and the peripheral area, and may include a first side portion positioned in the display area in the width direction, a second side portion positioned in the peripheral area, and a central portion between the first side portion and the second side portion. The edge portion of the separator may overlap the central portion of the auxiliary connection electrode and expose each of the first side portion and the second side portion of the auxiliary connection electrode. In the peripheral area, the auxiliary connection electrode connection portion of the voltage transmission electrode may contact the second side portion of the auxiliary connection electrode exposed by the edge portion of the separator.

[0019] In one embodiment, in the display area, the second electrodes can contact the first side of the auxiliary connecting electrode exposed by the edge portion of the separator.

[0020] In one embodiment, the auxiliary connecting electrode may include first to third auxiliary connecting electrodes each surrounding the first to third light-emitting regions on a plane.

[0021] In one embodiment, the first to third auxiliary connecting electrodes may be spaced apart from each other on a plane.

[0022] In one embodiment, each of the first to third auxiliary connecting electrodes may have a closed ring shape on a plane.

[0023] In one embodiment, the first auxiliary connecting electrode may include a first side portion that is relatively far from the first light-emitting region in the width direction and a second side portion that is relatively close to the first light-emitting region. The separator may overlap the first side portion of the first auxiliary connecting electrode and expose the second side portion of the first auxiliary connecting electrode. In the display area, the second side portion of the first auxiliary connecting electrode exposed by the separator may be in contact with any one of the second electrodes that overlaps the first light-emitting region.

[0024] In order to achieve the above-described object of the present invention, a display device according to exemplary embodiments of the present invention may include a substrate including a display area and a peripheral area located around the display area, a power supply line disposed in the peripheral area and supplied with a low power voltage, an auxiliary electrode disposed in the display area and electrically connected to the power supply line, an auxiliary connecting pattern disposed on the auxiliary electrode, electrically connected to the auxiliary electrode, and including a first conductive layer and a second conductive layer sequentially stacked, wherein the second conductive layer has a tip portion defined by a portion protruding compared to the first conductive layer, a plurality of first electrodes disposed in the display area and supplied with a high power voltage, a pixel defining layer disposed on the auxiliary connecting pattern and the first electrodes and exposing a portion of each of the first electrodes to define light-emitting areas, an electrode layer disposed on the auxiliary connecting pattern and the first electrodes, electrically connected to the auxiliary connecting pattern, and supplied with the low power voltage, and a separator disposed on the pixel defining layer and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

[0025] In order to achieve another object of the present invention described above, an electronic device according to exemplary embodiments of the present invention may include a window, a housing coupled to the window to provide a predetermined internal space, and a display device accommodated in the internal space provided between the housing and the window. The display device may include a substrate including a display area and a peripheral area located around the display area, a power supply line disposed in the peripheral area and supplied with a low power voltage, a plurality of first electrodes disposed in the display area and supplied with a high power voltage, a pixel defining layer disposed on the first electrodes and exposing a portion of each of the first electrodes to define light-emitting areas, an auxiliary connection electrode disposed on the pixel defining layer and electrically connected to the power supply line, an electrode layer disposed on the first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with the low power voltage, and a separator disposed on the auxiliary connection electrode, overlapping a portion of the auxiliary connection electrode, and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

[0026] According to embodiments of the present invention, current leakage between adjacent light-emitting elements included in a display device can be reduced. The voltage drop phenomenon of the low power voltage provided to the cathode included in the light-emitting elements can be improved. Accordingly, the display quality of the display device can be improved.

[0027] However, the effects of the present invention are not limited to the above-described effects, and may be expanded in various ways without departing from the spirit and scope of the present invention.

[0028] FIG. 1A is a schematic plan view showing a display device according to one embodiment of the present invention.

[0029] FIG. 1b is a schematic plan view showing a display device according to one embodiment of the present invention.

[0030] FIG. 2 is a circuit diagram showing the circuit structure of a pixel included in the display device of FIG. 1a and FIG. 1b.

[0031] FIG. 3 is a schematic plan view showing a portion of the display device of FIGS. 1a and 1b.

[0032] Figure 4 is a schematic plan view showing an enlarged view of one of the unit light emitting areas of Figure 3.

[0033] Figure 5 is a schematic cross-sectional view taken along line II' of Figure 4.

[0034] FIGS. 6 and 7 are schematic plan views showing some areas of a display device according to one embodiment of the present invention.

[0035] Fig. 8 is a schematic plan view showing an enlarged view of one of the unit light-emitting areas of Fig. 7.

[0036] Figure 9 is a schematic cross-sectional view taken along line II-II' of Figure 8.

[0037] FIGS. 10 and 11 are schematic plan views showing some areas of a display device according to one embodiment of the present invention.

[0038] Fig. 12 is a schematic plan view showing an enlarged view of one of the unit light-emitting areas of Fig. 11.

[0039] Fig. 13 is a schematic cross-sectional view taken along line III-III' of Fig. 12.

[0040] FIGS. 14 and 15 are schematic plan views showing some areas of a display device according to one embodiment of the present invention.

[0041] Fig. 16 is a schematic plan view showing an enlarged view of one of the unit light-emitting areas of Fig. 15.

[0042] Fig. 17 is a schematic cross-sectional view taken along line IV-IV' of Fig. 16.

[0043] Figure 18 is a schematic plan view showing a display device according to one embodiment of the present invention.

[0044] Fig. 19 is a schematic cross-sectional view taken along line VV' of Fig. 18.

[0045] FIG. 20 is a schematic block diagram showing an electronic device according to one embodiment of the present invention.

[0046] Figure 21 is a schematic diagram showing an example of the electronic device of Figure 20 being implemented as a smartphone.

[0047] Figure 22 is a schematic exploded plan view of the electronic device of Figure 21.

[0048] With respect to the embodiments of the present invention disclosed in the text, specific structural and functional descriptions are merely illustrative for the purpose of explaining the embodiments of the present invention, and the embodiments of the present invention may be implemented in various forms and should not be construed as being limited to the embodiments described in the text.

[0049] The present invention is susceptible to various modifications and takes various forms. Specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the present invention to specific disclosed forms, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0050] While terms like "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms may be used to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0051] When a component is referred to as being "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components present in between. Other expressions describing the relationship between components, such as "between" or "adjacent to," should be interpreted similarly.

[0052] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" indicate the presence of a described feature, number, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0053] Terms such as “below,” “underneath,” “below,” “underneath,” “above,” “above,” “above,” and “on top” are used to describe the relationships between components depicted in the drawings. These terms are relative concepts and are described based on the directions indicated in the drawings.

[0054] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning within the context of the relevant technology, and shall not be construed in an idealized or overly formal sense unless explicitly defined herein.

[0055] Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. Identical or similar reference numerals are used for identical components in the attached drawings, and redundant descriptions of identical components are omitted or simplified.

[0056] FIG. 1A is a schematic plan view illustrating a display device according to one embodiment of the present invention. FIG. 1B is a schematic plan view illustrating a display device according to one embodiment of the present invention.

[0057] In this specification, a plane may be defined by a first direction (DR1) and a second direction (DR2) intersecting the first direction (DR1). For example, the first direction (DR1) and the second direction (DR2) may be perpendicular to each other. The display device and various components or layers may have a thickness extending along a third direction intersecting the plane. In other words, the third direction may be perpendicular to each of the first direction (DR1) and the second direction (DR2).

[0058] Referring to FIGS. 1A and 1B, the display devices (DD, DDa) may be devices activated according to electrical signals. For example, the display device (DD) may be a small display device used in small electronic devices such as smartphones, mobile phones, smart watches, game consoles, and cameras. In addition, the display device (DDa) may be a medium- to large-sized display device used in medium- to large-sized electronic devices such as laptops, tablet PCs, televisions, computer monitors, vehicle monitors, and external billboards. In FIG. 1A, the display device (DD) is illustrated as an example of the small display device, and in FIG. 1B, the display device (DDa) is illustrated as an example of the medium- to large-sized display device.

[0059] A display device (DD, DDa) may include a display area (DA) and a peripheral area (NDA). The display area (DA) may be an area that generates light or displays an image by controlling the transmittance of light provided from an external light source. The peripheral area (NDA) may be located around the display area (DA). For example, on a plane, the peripheral area (NDA) may surround at least a portion of the display area (DA). In one embodiment, the peripheral area (NDA) may be an area that does not display an image. However, the present invention is not limited thereto, and an image may be displayed in at least a portion of the peripheral area (NDA). For example, a light-emitting element that emits light may be arranged in at least a portion of the peripheral area (NDA).

[0060] The display device (DD, DDa) may include a substrate (SUB), pixels (PX), a gate line (GL), a data line (DL), a data driver (DDV), a gate driver (GDV), a power line (PL), a first power supply line (VSL1), and a second power supply line (VSL2).

[0061] The substrate (SUB) may form the base of the display device (DD, DDa). In one embodiment, examples of materials that may be used as the substrate (SUB) include glass, quartz, silicon, polymers, etc. These may be used alone or in combination. In addition, the substrate (SUB) may have a single-layer structure or a multi-layer structure in which multiple layers containing different materials are laminated.

[0062] Pixels (PX) may be arranged in a display area (DA) on a substrate (SUB). The pixels (PX) may be electrically connected to a gate line (GL), a data line (DL), and a power line (PL). For example, the pixels (PX) may be arranged in a matrix form along a first direction (DR1) and a second direction (DR2). Each of the pixels (PX) may include a pixel driving circuit and a light-emitting element. The light-emitting element may emit light. The light-emitting element may be an organic light-emitting diode or an inorganic light-emitting diode.

[0063] The gate line (GL) and the data line (DL) may intersect each other. For example, the gate line (GL) may generally extend in a first direction (DR1) and may be arranged along a second direction (DR2). The data line (DL) may generally extend in a second direction (DR2) and may be arranged along the first direction (DR1). The power line (PL) may generally extend in a second direction (DR2) and may be arranged along the first direction (DR1). However, the present invention is not limited thereto.

[0064] A data driver (DDV) may be arranged in a peripheral area (NDA) on a substrate (SUB). The data driver (DDV) may generate a data voltage. The data driver (DDV) may output the data voltage to a data line (DL). The data voltage may be applied to pixels (PX) via the data line (DL).

[0065] In one embodiment, the data driver (DDV) may be mounted on the substrate (SUB). However, the present invention is not limited thereto, and the data driver (DDV) may also be disposed on a flexible film coupled to the substrate (SUB) in a chip on film (COF) manner.

[0066] In one embodiment, the display device (DDa) of FIG. 1B may include a plurality of data drivers (DDV). For example, the data drivers (DDV) may be arranged on one side of the display area (DA) in the second direction (DR2). For example, the data drivers (DDV) may be arranged along the long side of the display device (DDa). However, the present invention is not limited thereto, and the data drivers (DDV) may also be arranged on both sides of the display area (DA) in the second direction (DR2).

[0067] A gate driver (GDV) may be disposed in a peripheral area (NDA) on a substrate (SUB). The gate driver (GDV) may generate a gate signal. The gate driver (GDV) may output the gate signal to a gate line (GL). The gate signal may be applied to pixels (PX) through the gate line (GL). In one embodiment, the gate driver (GDV) may be disposed on both sides of the display area (DA) in the first direction (DR1). However, the present invention is not limited thereto.

[0068] Meanwhile, the number or arrangement relationship of the data driving units (DDV) and the number or arrangement relationship of the gate driving units (GDV) illustrated in FIGS. 1a and 1b are merely examples, and the present invention is not limited thereto.

[0069] In one embodiment, a light emitting driver for generating a light emitting control signal may be further disposed in the peripheral area (NDA). The light emitting control signal may be applied to the pixels (PX) via a light emitting control line.

[0070] A first power supply line (VSL1) may be arranged in a peripheral area (NDA). The first power supply line (VSL1) may supply a first power voltage (ELVDD, see FIG. 2) having a relatively high voltage level to the pixels (PX). The first power voltage may be provided to the pixel driving circuit unit via a power line (PL). The first power voltage may be referred to as a high power voltage.

[0071] A second power supply line (VSL2) may be arranged in the peripheral area (NDA). The second power supply line (VSL2) may supply a second power voltage (ELVSS, see FIG. 2) having a relatively low voltage level to the pixels (PX). The second power voltage may be provided to a cathode of the light-emitting element (e.g., the second electrode (E2a) of FIG. 5). The second power voltage may be referred to as a low power voltage.

[0072] In FIGS. 1A and 1B, the first power supply line (VSL1) is illustrated as extending to correspond to one side of the display area (DA), and the second power supply line (VSL2) is illustrated as extending to correspond to the remaining three sides of the display area (DA). However, the present invention is not limited thereto, and the shape and arrangement of the first power supply line (VSL1) and the second power supply line (VSL2) may be variously changed according to embodiments.

[0073] In addition, although the display device (DD) in FIG. 1A is illustrated as having a substantially rectangular planar shape having a short side extending in the first direction (DR1) and a long side extending in the second direction (DR2), the present invention is not limited thereto. In addition, although the display device (DDa) in FIG. 1B is illustrated as having a substantially rectangular planar shape having a long side extending in the first direction (DR1) and a short side extending in the second direction (DR2), the present invention is not limited thereto. That is, the planar shapes of the display devices (DD, DDa) may be variously changed depending on the embodiments.

[0074] Meanwhile, the descriptions referring to the drawings hereinbelow can be equally applied to the display device (DD) of Fig. 1a and the display device (DDa) of Fig. 1b. Hereinafter, for convenience of explanation, the expression will be unified as the display device (DD).

[0075] FIG. 2 is a circuit diagram showing the circuit structure of a pixel included in the display device of FIG. 1a and FIG. 1b.

[0076] Referring to FIG. 2, a pixel (PX) may include a light-emitting element (LD) and a pixel driving circuit (PC) connected to the light-emitting element (LD). In one embodiment, the pixel driving circuit (PC) may include first to seventh transistors (T1, T2, T3, T4, T5, T6, T7) and a first capacitor (C1). However, the present invention is not limited thereto, and some of the components of the pixel driving circuit (PC) may be omitted, or other components may be added. In other words, the circuit structure of the pixel (PX) illustrated in FIG. 2 (e.g., the number or arrangement relationship of transistors, the number or arrangement relationship of capacitors) is only an example, and may be variously changed according to embodiments.

[0077] In FIG. 2, the first transistor (T1), the third transistor (T3), and the fourth transistor (T4) are illustrated as n-type transistors, and the second transistor (T2), the fifth transistor (T5), the sixth transistor (T6), and the seventh transistor (T7) are illustrated as p-type transistors. However, the present invention is not limited thereto, and some of the first to seventh transistors (T1, T2, T3, T4, T5, T6, T7) may be n-type transistors, and others may be p-type transistors. For example, the first transistor (T1) may be an n-type transistor, and the second to seventh transistors (T2, T3, T4, T5, T6, T7) may be p-type transistors.

[0078] When the pixel (PX) includes an n-type transistor and a p-type transistor, the active pattern of the n-type transistor may include an oxide semiconductor material, and the active pattern of the p-type transistor may include a silicon semiconductor material. However, the present invention is not limited thereto, and both the active pattern of the n-type transistor and the active pattern of the p-type transistor may include a silicon semiconductor material.

[0079] The pixel driving circuit (PC) can be connected to first to fourth gate lines (GWL, GCL, GIL, GBL), a data line (DL), first to fourth voltage lines (VL1, VL2, VL3, VL4), and an emission control line (ECL). The first gate line (GWL) can transmit a first gate signal (GW). The second gate line (GCL) can transmit a second gate signal (GC). The third gate line (GIL) can transmit a third gate signal (GI). The fourth gate line (GBL) can transmit a fourth gate signal (GB). The data line (DL) can transmit a data voltage (VDATA). The first voltage line (VL1) can transmit a first power voltage (ELVDD) having a relatively high voltage level. The first voltage line (VL1) can be the power line (PL) of FIG. 1. The second voltage line (VL2) can transmit a second power supply voltage (ELVSS) having a relatively low voltage level. The third voltage line (VL3) can transmit a gate initialization voltage (VINT). The fourth voltage line (VL4) can transmit an anode initialization voltage (VAINT).

[0080] A first transistor (T1) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the first transistor (T1) may be a source, and the second terminal of the first transistor (T1) may be a drain. The gate terminal of the first transistor (T1) may be connected to a first node (N1). The first terminal of the first transistor (T1) may be connected to a second node (N2). The second terminal of the first transistor (T1) may be connected to a third node (N3). The first transistor (T1) may provide a driving current (ID) to the light-emitting element (LD).

[0081] The second transistor (T2) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the second transistor (T2) may be a source, and the second terminal of the second transistor (T2) may be a drain. The gate terminal of the second transistor (T2) may receive a first gate signal (GW) through a first gate line (GWL). The first terminal of the second transistor (T2) may receive a data voltage (VDATA) through a data line (DL). The second terminal of the second transistor (T2) may be connected to a second node (N2).

[0082] The second transistor (T2) can be turned on or off in response to the first gate signal (GW). For example, when the second transistor (T2) is a p-type transistor, the second transistor (T2) can be turned off when the first gate signal (GW) has a positive voltage level, and can be turned on when the first gate signal (GW) has a negative voltage level. In addition, when the second transistor (T2) is an n-type transistor, the second transistor (T2) can be turned off when the first gate signal (GW) has a negative voltage level, and can be turned on when the first gate signal (GW) has a positive voltage level. During a period in which the second transistor (T2) is turned on, the second terminal of the second transistor (T2) can provide a data voltage (VDATA) to the second node (N2). Accordingly, the second transistor (T2) can drive the first transistor (T1).

[0083] The third transistor (T3) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the third transistor (T3) may be a source, and the second terminal of the third transistor (T3) may be a drain. The gate terminal of the third transistor (T3) may receive a second gate signal (GC) through a second gate line (GCL). The first terminal of the third transistor (T3) may be connected to a first node (N1). The second terminal of the third transistor (T3) may be connected to a third node (N3).

[0084] The third transistor (T3) can be turned on or off in response to the second gate signal (GC). For example, when the third transistor (T3) is an n-type transistor, the third transistor (T3) can be turned off when the second gate signal (GC) has a negative voltage level, and can be turned on when the second gate signal (GC) has a positive voltage level. In addition, when the third transistor (T3) is a p-type transistor, the third transistor (T3) can be turned off when the second gate signal (GC) has a positive voltage level, and can be turned on when the second gate signal (GC) has a negative voltage level. During a period in which the third transistor (T3) is turned on, the third transistor (T3) can diode-connect the first transistor (T1). For example, the third transistor (T3) can compensate for the threshold voltage of the first transistor (T1).

[0085] The fourth transistor (T4) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the fourth transistor (T4) may be a source, and the second terminal of the fourth transistor (T4) may be a drain. The gate terminal of the fourth transistor (T4) may receive a third gate signal (GI) through a third gate line (GIL). The first terminal of the fourth transistor (T4) may receive a gate initialization voltage (VINT) through a third voltage line (VL3). The second terminal of the fourth transistor (T4) may be connected to a first node (N1).

[0086] The fourth transistor (T4) can be turned on or off in response to the third gate signal (GI). For example, when the fourth transistor (T4) is an n-type transistor, the fourth transistor (T4) can be turned off when the third gate signal (GI) has a negative voltage level, and can be turned on when the third gate signal (GI) has a positive voltage level. In addition, when the fourth transistor (T4) is a p-type transistor, the fourth transistor (T4) can be turned off when the third gate signal (GI) has a positive voltage level, and can be turned on when the third gate signal (GI) has a negative voltage level. During a period in which the fourth transistor (T4) is turned on, the second terminal of the fourth transistor (T4) can provide a gate initialization voltage (VINT) to the first node (N1). Accordingly, the fourth transistor (T4) can initialize the voltage of the gate terminal of the first transistor (T1).

[0087] The fifth transistor (T5) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the fifth transistor (T5) may be a source, and the second terminal of the fifth transistor (T5) may be a drain. The gate terminal of the fifth transistor (T5) may receive an emission control signal (EM) through an emission control line (ECL). The first terminal of the fifth transistor (T5) may receive a first power supply voltage (ELVDD) through a first voltage line (VL1). The second terminal of the fifth transistor (T5) may be connected to a second node (N2).

[0088] The fifth transistor (T5) can be turned on or off in response to the light emission control signal (EM). For example, when the fifth transistor (T5) is a p-type transistor, the fifth transistor (T5) can be turned off when the light emission control signal (EM) has a positive voltage level, and can be turned on when the light emission control signal (EM) has a negative voltage level. In addition, when the fifth transistor (T5) is an n-type transistor, the fifth transistor (T5) can be turned off when the light emission control signal (EM) has a negative voltage level, and can be turned on when the light emission control signal (EM) has a positive voltage level. During a period in which the fifth transistor (T5) is turned on, the fifth transistor (T5) can provide the first power voltage (ELVDD) to the first terminal of the first transistor (T1).

[0089] The sixth transistor (T6) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the sixth transistor (T6) may be a source, and the second terminal of the sixth transistor (T6) may be a drain. The gate terminal of the sixth transistor (T6) may receive an emission control signal (EM) through an emission control line (ECL). The first terminal of the sixth transistor (T6) may be connected to a third node (N3). The second terminal of the sixth transistor (T6) may be connected to a fourth node (N4).

[0090] The sixth transistor (T6) can be turned on or off in response to the light emission control signal (EM). For example, when the sixth transistor (T6) is a p-type transistor, the sixth transistor (T6) can be turned off when the light emission control signal (EM) has a positive voltage level, and can be turned on when the light emission control signal (EM) has a negative voltage level. In addition, when the sixth transistor (T6) is an n-type transistor, the sixth transistor (T6) can be turned off when the light emission control signal (EM) has a negative voltage level, and can be turned on when the light emission control signal (EM) has a positive voltage level. During a period in which the sixth transistor (T6) is turned on, the sixth transistor (T6) can provide a driving current (ID) to the light emitting element (LD).

[0091] The seventh transistor (T7) may include a gate terminal, a first terminal, and a second terminal. In one embodiment, the first terminal of the seventh transistor (T7) may be a source, and the second terminal of the seventh transistor (T7) may be a drain. The gate terminal of the seventh transistor (T7) may receive a fourth gate signal (GB) through a fourth gate line (GBL). The first terminal of the seventh transistor (T7) may receive an anode initialization voltage (VAINT) through a fourth voltage line (VL4). The second terminal of the seventh transistor (T7) may be connected to a fourth node (N4).

[0092] The seventh transistor (T7) can be turned on or off in response to the fourth gate signal (GB). For example, when the seventh transistor (T7) is a p-type transistor, the seventh transistor (T7) can be turned off when the fourth gate signal (GB) has a positive voltage level, and can be turned on when the fourth gate signal (GB) has a negative voltage level. In addition, when the seventh transistor (T7) is an n-type transistor, the seventh transistor (T7) can be turned off when the fourth gate signal (GB) has a negative voltage level, and can be turned on when the fourth gate signal (GB) has a positive voltage level. During a period in which the seventh transistor (T7) is turned on, the second terminal of the seventh transistor (T7) can provide the anode initialization voltage (VAINT) to the fourth node (N4). Accordingly, the seventh transistor (T7) can initialize the anode voltage of the light-emitting element (LD).

[0093] A first capacitor (C1) may include a first terminal and a second terminal. The first terminal of the first capacitor (C1) may receive a first power supply voltage (ELVDD) through a first voltage line (VL1). The second terminal of the first capacitor (C1) may be connected to a first node (N1). The first capacitor (C1) may maintain a voltage level of the gate terminal of the first transistor (T1) even when the second transistor (T2) is turned off.

[0094] Although not shown in FIG. 2, the pixel driver circuit (PC) may further include a second capacitor. The second capacitor may include a first terminal to which a first power supply voltage (ELVDD) is provided and a second terminal connected to the first terminal of the first transistor (T1).

[0095] The light emitting element (LD) may include an anode and a cathode. The anode of the light emitting element (LD) may be connected to a fourth node (N4). The cathode of the light emitting element (LD) may receive a second power supply voltage (ELVSS) through a second voltage line (VL2). The light emitting element (LD) may generate light with a brightness corresponding to the driving current (ID).

[0096] Fig. 3 is a schematic plan view showing a portion of the display device of Figs. 1a and 1b. Fig. 4 is a schematic plan view showing an enlarged portion of one of the unit light-emitting regions of Fig. 3. Fig. 5 is a schematic cross-sectional view taken along line II' of Fig. 4.

[0097] Specifically, in FIG. 3, an area is illustrated in which a total of four unit light-emitting areas (UEA1, UEA2) forming a matrix of two rows and two columns are arranged, and in FIG. 4, one of the first unit light-emitting areas (UEA1, UEA2) among the unit light-emitting areas is illustrated in an enlarged manner. For convenience of explanation, some of the configurations illustrated in FIG. 5 are omitted or emphasized in FIGS. 3 and 4.

[0098] Referring to FIGS. 3 and 4, another display device (DD) according to one embodiment may include first to third pixel driving circuits (PCa, PCb, PCc), first to third light-emitting elements (LDa, LDb, LDc), first to third auxiliary connection patterns (ACPa, ACPb, ACPc), and a separator (SPR).

[0099] Each of the first to third pixel driving circuits (PCa, PCb, PCc) may correspond to the pixel driving circuit (PC) described with reference to FIG. 2. That is, each of the first to third pixel driving circuits (PCa, PCb, PCc) may include at least one transistor and at least one capacitor. For example, each of the first to third pixel driving circuits (PCa, PCb, PCc) may include the transistor (TR), the first capacitor (CAP1), and the second capacitor (CAP2) illustrated in FIG. 5.

[0100] At this time, the transistor (TR) of FIG. 5 may be a transistor connected to a light-emitting element through an anode connection electrode (not shown). For example, when the first to third pixel driving circuits (PCa, PCb, PCc) are the pixel driving circuits (PC) of FIG. 2, the transistor (TR) of FIG. 5 may be the sixth transistor (T6) of FIG. 2. In addition, the first capacitor (CAP1) of FIG. 5 may correspond to the first capacitor (C1) of FIG. 2, and the second capacitor (CAP2) of FIG. 5 may be omitted. However, the present invention is not limited thereto, and the second capacitor (CAP2) of FIG. 5 may correspond to the first capacitor (C1) of FIG. 2, and the first capacitor (CAP1) of FIG. 5 may be omitted. A detailed description of the components of the transistor (TR), the first capacitor (CAP1), and the second capacitor (CAP2) will be described later with reference to FIG. 5.

[0101] In FIGS. 3 and 4, the first to third pixel driving circuits (PCa, PCb, PCc) are illustrated as being sequentially arranged along the first direction (DR1) in a rectangular shape. However, the present invention is not limited thereto, and the shape and arrangement of the first to third pixel driving circuits (PCa, PCb, PCc) may be varied in various ways depending on the embodiments.

[0102] Each of the first to third light-emitting elements (LDa, LDb, LDc) may correspond to the light-emitting element (LD) described with reference to FIG. 2. For example, each of the first to third light-emitting elements (LDa, LDb, LDc) may include a first electrode (e.g., the first electrode E1 of FIG. 5), an intermediate layer (e.g., the intermediate layer ML of FIG. 5) disposed on the first electrode, and an electrode layer E2L disposed on the intermediate layer. In one embodiment, the first electrode may function as the anode of FIG. 2, and the electrode layer E2L may function as the cathode of FIG. 2. The first electrode of the first light-emitting element (LDa), the first electrode of the second light-emitting element (LDb), and the first electrode of the second light-emitting element (LDc) may be spaced apart from each other on a plane. In other words, the first electrode of the first light-emitting element (LDa), the first electrode of the second light-emitting element (LDb), and the first electrode of the second light-emitting element (LDc) may be different patterns that are physically separated from each other.

[0103] In one embodiment, the electrode layer (E2L) may be separated (or disconnected) into a plurality of second electrodes (E2a, E2b, E2c) that are spaced apart from each other by a separator (SPR). Specifically, the electrode layer (E2L) may be separated (or disconnected) into a second electrode (E2a) of the first light-emitting element (LDa), a second electrode (E2b) of the second light-emitting element (LDb), and a second electrode (E2c) of the third light-emitting element (LDc).

[0104] The first to third light-emitting elements (LDa, LDb, LDc) may be connected to the first to third pixel driving circuits (PCa, PCb, PCc), respectively. Accordingly, the first pixel driving circuit (PCa) and the first light-emitting element (LDa) may constitute one pixel, the second pixel driving circuit (PCb) and the second light-emitting element (LDb) may constitute one pixel, and the third pixel driving circuit (PCc) and the third light-emitting element (LDc) may constitute one pixel.

[0105] The first to third light-emitting elements (LDa, LDb, LDc) can emit light of different colors. For example, the first light-emitting element (LDa) can emit red light, the second light-emitting element (LDb) can emit green light, and the third light-emitting element (LDc) can emit blue light. However, the present invention is not limited thereto.

[0106] In one embodiment, as illustrated in FIG. 3, the display device (DD) may include a first unit light-emitting area (UEA1) and a second unit light-emitting area (UEA2). The first unit light-emitting area (UEA1) and the second unit light-emitting area (UEA2) may be defined in a matrix form along the first direction (DR1) and the second direction (DR2). Meanwhile, although four unit light-emitting areas are illustrated in FIG. 3, the unit light-emitting areas in the display area (DA, see FIGS. 1A and 1B) may be defined in a matrix form overall along the first direction (DR1) and the second direction (DR2).

[0107] Within each of the first unit light emitting area (UEA1) and the second unit light emitting area (UEA2), first to third light emitting elements (LDa, LDb, LDc) adjacent to each other may be arranged. For example, within each of the first unit light emitting area (UEA1) and the second unit light emitting area (UEA2), first to third light emitting areas (EAa, EAb, EAc) adjacent to each other may be defined, and the first to third light emitting elements (LDa, LDb, LDc) may be arranged in the first to third light emitting areas (EAa, EAb, EAc), respectively.

[0108] The first to third light-emitting regions (EAa, EAb, EAc) may be defined by pixel openings of a pixel defining layer (PDL, see FIG. 5) described later. The first to third light-emitting regions (EAa, EAb, EAc) may be regions where light is emitted by light-emitting elements. For example, the first light-emitting element (LDa) may be disposed in the first light-emitting region (EAa), and the first light-emitting region (EAa) may be a region where light is emitted by the first light-emitting element (LDa). In addition, the second light-emitting element (LDb) may be disposed in the second light-emitting region (EAb), and the second light-emitting region (EAb) may be a region where light is emitted by the second light-emitting element (LDb). In addition, the third light-emitting element (LDc) may be disposed in the third light-emitting region (EAc), and the third light-emitting region (EAc) may be a region where light is emitted by the third light-emitting element (LDc). The first to third light-emitting regions (EAa, EAb, EAc) can emit light of different colors. For example, the first light-emitting region (EAa) can emit red light, the second light-emitting region (EAb) can emit green light, and the third light-emitting region (EAc) can emit blue light. However, the present invention is not limited thereto.

[0109] In one embodiment, the first unit light emitting area (UEA1) and the second unit light emitting area (UEA2) can be distinguished based on the arrangement relationship between the first to third light emitting elements (LDa, LDb, LDc) (or the arrangement relationship between the first to third light emitting areas (EAa, EAb, EAc)). That is, the arrangement relationship between the first to third light emitting elements (LDa, LDb, LDc) (or the first to third light emitting areas (EAa, EAb, EAc)) in each first unit light emitting area (UEA1) can be the same, and the arrangement relationship between the first to third light emitting elements (LDa, LDb, LDc) (or the first to third light emitting areas (EAa, EAb, EAc)) in each second unit light emitting area (UEA2) can be the same.

[0110] In one embodiment, as illustrated in FIG. 3, the first unit light emitting area (UEA1) and the second unit light emitting area (UEA2) may be alternately arranged along the first direction (DR1) (i.e., row direction) and the second direction (DR2) (i.e., column direction). However, the present invention is not limited thereto, and the number of different unit light emitting areas included in the display device (DD) or the arrangement relationship between the unit light emitting areas may vary depending on the embodiments.

[0111] In FIGS. 3 and 4, the first to third light-emitting areas (EAa, EAb, EAc) are illustrated as being arranged in an S-stripe type, but the present invention is not limited thereto. The arrangement of the first to third light-emitting areas (EAa, EAb, EAc) may vary depending on the embodiments.

[0112] The separator (SPR) may not overlap each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. The separator (SPR) may be disposed between the first to third light-emitting regions (EAa, EAb, EAc) on a plane. Specifically, the separator (SPR) may be disposed between the first light-emitting region (EAa) and the second light-emitting region (EAb), between the second light-emitting region (EAb) and the third light-emitting region (EAc), and between the first light-emitting region (EAa) and the third light-emitting region (EAc) on a plane. The separator (SPR) may surround at least a portion of each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. In one embodiment, as illustrated in FIGS. 3 and 4 , the separator (SPR) may entirely surround each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. However, the present invention is not limited thereto, and on a plane, the separator (SPR) may surround a portion of each of the first to third light-emitting regions (EAa, EAb, EAc) and may not surround another portion of each of the first to third light-emitting regions (EAa, EAb, EAc).

[0113] The separator (SPR) can separate (or disconnect) the electrode layer (E2L) in the display area (DA) into the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc). Accordingly, the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc) can be spaced apart from each other on a plane.

[0114] The separator (SPR) can define first to third open areas (OA1, OA2, OA3) corresponding to the second electrodes (E2a, E2b, E2c), respectively. For example, the separator (SPR) can have a mesh structure surrounding each of the second electrodes (E2a, E2b, E2c) on a plane. The second electrode (E2a) of the first light-emitting element (LDa) can be arranged in the first open area (OA1) of the separator (SPR), the second electrode (E2b) of the second light-emitting element (LDb) can be arranged in the second open area (OA2) of the separator (SPR), and the second electrode (E2c) of the third light-emitting element (LDc) can be arranged in the third open area (OA3) of the separator (SPR).

[0115] In one embodiment, the planar shape of the first open area (OA1) may be substantially the same as the planar shape of the second electrode (E2a) of the first light-emitting element (LEDa), the planar shape of the second open area (OA2) may be substantially the same as the planar shape of the second electrode (E2b) of the second light-emitting element (LEDb), and the planar shape of the third open area (OA3) may be substantially the same as the planar shape of the second electrode (E2c) of the third light-emitting element (LEDc).

[0116] In one embodiment, the separator (SPR) may include an organic insulating material. For example, the separator (SPR) may include a photosensitive resin (e.g., photoresist), but the present invention is not limited thereto.

[0117] Hereinafter, the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) will be described in more detail, focusing on the first unit light-emitting area (UEA1) of FIG. 4. The following description regarding the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) can be applied substantially identically or similarly to all unit light-emitting areas.

[0118] As described above, the display device (DD) may include first to third auxiliary connection patterns (ACPa, ACPb, ACPc). The first auxiliary connection pattern (ACPa) may electrically connect the first light-emitting element (LDa) and the auxiliary electrode (AUE, see FIG. 5). The second auxiliary connection pattern (ACPb) may electrically connect the second light-emitting element (LDb) and the auxiliary electrode. The third auxiliary connection pattern (ACPc) may electrically connect the third light-emitting element (LDc) and the auxiliary electrode. The second power voltage (ELVSS, see FIG. 2) may be applied to the auxiliary electrode.

[0119] Each of the first to third auxiliary connecting patterns (ACPa, ACPb, ACPc) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, or a transparent conductive oxide. Examples of the conductive material that can be used as each of the first to third auxiliary connecting patterns (ACPa, ACPb, ACPc) include gold (Au), silver (Ag), aluminum (Al), platinum (Pt), nickel (Ni), titanium (Ti), palladium (Pd), magnesium (Mg), calcium (Ca), lithium (Li), chromium (Cr), tantalum (Ta), tungsten (W), copper (Cu), molybdenum (Mo), scandium (Sc), neodymium (Nd), iridium (Ir), an alloy containing aluminum (Al), an alloy containing silver (Ag), an alloy containing copper (Cu), an alloy containing molybdenum (Mo), aluminum nitride (AlN), tungsten nitride (WN), titanium nitride (TiN), chromium nitride (CrN), tantalum nitride (TaN), tin oxide (SnO), gallium oxide (GaO), indium gallium zinc oxide (IGZO), indium tin There may be zinc oxide (ITZO), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), zinc oxide (ZnO), indium oxide (InO), aluminum zinc oxide (AZO), etc. These may be used alone or in combination with each other. In one embodiment, each of the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) may have a multilayer structure in which a plurality of conductive layers are stacked. A detailed description thereof will be provided below with reference to FIG. 5.

[0120] The first auxiliary connection pattern (ACPa) may include a first auxiliary electrode connection portion (CAa) and a first light-emitting connection portion (CNa).

[0121] The first auxiliary electrode connection portion (CAa) may be a portion of the first auxiliary connection pattern (ACPa) that is connected to the auxiliary electrode (AUE, see FIG. 5). Specifically, the position of the first auxiliary electrode connection portion (CAa) may correspond to the position of a contact hole that exposes the auxiliary electrode (AUE) and penetrates the fifth insulating layer (IL5, see FIG. 5).

[0122] The first light-emitting connection portion (CNa) may be a portion connected to the second electrode (E2a) of the first light-emitting element (LDa) among the first auxiliary connection patterns (ACPa). Specifically, the first light-emitting connection portion (CNa) may be a portion exposed from the sixth insulating layer (IL6, see FIG. 5) and the pixel defining layer (PDL, see FIG. 5) to be connected to the second electrode (E2a) among the first auxiliary connection patterns (ACPa). Accordingly, the position of the first light-emitting connection portion (CNa) may correspond to the position of an opening that exposes the first auxiliary connection pattern (ACPa) and penetrates the pixel defining layer (PDL) and the sixth insulating layer (IL6).

[0123] The second electrode (E2a) of the first light-emitting element (LDa) can be connected to the first auxiliary connection pattern (ACPa). Specifically, the second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the first auxiliary connection pattern (ACPa). Consequently, the second electrode (E2a) of the first light-emitting element (LDa) can be electrically connected to the auxiliary electrode (AUE, see FIG. 5) via the first auxiliary connection pattern (ACPa).

[0124] In one embodiment, the first light-emitting connection portion (CNa) may be arranged at a position that does not overlap the first light-emitting area (EAa). For example, the second electrode (E2a) of the first light-emitting element (LDa) may be in contact with the first auxiliary connection pattern (ACPa) at a position that does not overlap the first light-emitting area (EAa). For example, on a plane, the first light-emitting connection portion (CNa) may be arranged between the first light-emitting area (EAa) and the separator (SPR). Therefore, the second electrode (E2a) of the first light-emitting element (LDa) and the auxiliary electrode (AUE) may be electrically connected via the first auxiliary connection pattern (ACPa) without reducing the light-emitting area of ​​the first light-emitting area (EAa).

[0125] The second auxiliary connection pattern (ACPb) may include a second auxiliary electrode connection portion (CAb) and a second light-emitting connection portion (CNb).

[0126] The second auxiliary electrode connection portion (CAb) may be a portion of the second auxiliary connection pattern (ACPb) that is connected to the auxiliary electrode. Specifically, the position of the second auxiliary electrode connection portion (CAb) may correspond to the position of a contact hole that exposes the auxiliary electrode and penetrates the fifth insulating layer.

[0127] The second light-emitting connection portion (CNb) may be a portion of the second auxiliary connection pattern (ACPb) that is connected to the second electrode (E2b) of the second light-emitting element (LDb). Specifically, the second light-emitting connection portion (CNb) may be a portion that is exposed from the sixth insulating layer and the pixel defining film in order to be connected to the second electrode (E2b) of the second auxiliary connection pattern (ACPb). Accordingly, the position of the second light-emitting connection portion (CNb) may correspond to the position of an opening that exposes the second auxiliary connection pattern (ACPb) and penetrates the pixel defining film and the sixth insulating layer.

[0128] In one embodiment, the second auxiliary connection pattern (ACPb) may be spaced apart from the first auxiliary connection pattern (ACPa) in a plane. In other words, the first auxiliary connection pattern (ACPa) and the second auxiliary connection pattern (ACPb) may be different electrodes that are distinct from each other.

[0129] The second electrode (E2b) of the second light-emitting element (LDb) can be connected to the second auxiliary connection pattern (ACPb). Specifically, the second electrode (E2b) of the second light-emitting element (LDb) can be in contact with the second auxiliary connection pattern (ACPb). Consequently, the second electrode (E2b) of the second light-emitting element (LDb) can be electrically connected to the auxiliary electrode via the second auxiliary connection pattern (ACPb).

[0130] In one embodiment, the second light-emitting connection portion (CNb) may be arranged at a position that does not overlap the second light-emitting area (EAb). For example, the second electrode (E2b) of the second light-emitting element (LDb) may be in contact with the second auxiliary connection pattern (ACPb) at a position that does not overlap the second light-emitting area (EAb). For example, on a plane, the second light-emitting connection portion (CNb) may be arranged between the second light-emitting area (EAb) and the separator (SPR). Therefore, the second electrode (E2b) of the second light-emitting element (LDb) and the auxiliary electrode may be electrically connected via the second auxiliary connection pattern (ACPb) without reducing the light-emitting area of ​​the second light-emitting area (EAb).

[0131] The third auxiliary connection pattern (ACPc) may include a third auxiliary electrode connection portion (CAc) and a third light-emitting connection portion (CNc).

[0132] The third auxiliary electrode connection portion (CAc) may be a portion of the third auxiliary connection pattern (ACPc) that is connected to the auxiliary electrode. Specifically, the position of the third auxiliary electrode connection portion (CAc) may correspond to the position of a contact hole that exposes the auxiliary electrode and penetrates the fifth insulating layer.

[0133] The third light-emitting connection portion (CNc) may be a portion connected to the second electrode (E2c) of the third light-emitting element (LDc) among the third auxiliary connection patterns (ACPc). Specifically, the third light-emitting connection portion (CNc) may be a portion exposed from the sixth insulating layer and the pixel defining film to be connected to the second electrode (E2c) among the third auxiliary connection patterns (ACPc). Accordingly, the position of the third light-emitting connection portion (CNc) may correspond to the position of an opening that exposes the third auxiliary connection pattern (ACPc) and penetrates the pixel defining film and the sixth insulating layer.

[0134] In one embodiment, the third auxiliary connection pattern (ACPc) may be spaced apart from the first auxiliary connection pattern (ACPa) and the second auxiliary connection pattern (ACPb) on a plane. In other words, the first auxiliary connection pattern (ACPa), the second auxiliary connection pattern (ACPb), and the third auxiliary connection pattern (ACPc) may be different electrodes that are distinct from each other.

[0135] The second electrode (E2c) of the third light-emitting element (LDc) can be connected to the third auxiliary connection pattern (ACPc). Specifically, the second electrode (E2c) of the third light-emitting element (LDc) can be in contact with the third auxiliary connection pattern (ACPc). Consequently, the second electrode (E2c) of the third light-emitting element (LDc) can be electrically connected to the auxiliary electrode via the third auxiliary connection pattern (ACPc).

[0136] In one embodiment, the third light-emitting connection portion (CNc) may be arranged at a position that does not overlap the third light-emitting area (EAc). For example, the second electrode (E2c) of the third light-emitting element (LDc) may be in contact with the third auxiliary connection pattern (ACPc) at a position that does not overlap the third light-emitting area (EAc). For example, on a plane, the third light-emitting connection portion (CNc) may be arranged between the third light-emitting area (EAc) and the separator (SPR). Therefore, the second electrode (E2c) of the third light-emitting element (LDc) and the auxiliary electrode may be electrically connected via the third auxiliary connection pattern (ACPc) without reducing the light-emitting area of ​​the third light-emitting area (EAc).

[0137] Meanwhile, as illustrated in FIG. 3, the shape or arrangement of each of the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) corresponding to each of the first unit light-emitting areas (UEA1) may be the same. In addition, the shape or arrangement of each of the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) corresponding to each of the second unit light-emitting areas (UEA2) may be the same.

[0138] Hereinafter, the cross-sectional structure of the display device (DD) will be described in more detail with reference to FIG. 5, focusing on the first light-emitting area (EAa). The following description of the cross-sectional structure of the display device (DD) can be equally applied to all light-emitting areas.

[0139] Referring further to FIG. 5, the display device (DD) may include a substrate (SUB), a first lower conductive layer (BML1), a second lower conductive layer (BML2), a transistor (TR), a first capacitor (CAP1), a second capacitor (CAP2), an auxiliary electrode (AUE), a first auxiliary connection pattern (ACPa), first to sixth insulating layers (IL1, IL2, IL3, IL4, IL5, IL6), a pixel defining layer (PDL), a first light-emitting element (LDa), a separator (SPR), a first dummy layer (DP1), a second dummy layer (DP2), and an encapsulation layer (ENC).

[0140] The transistor (TR) may include an active pattern (AP), a gate electrode (GE), a first contact electrode (SE), and a second contact electrode (DE). The first capacitor (CAP1) may include a first capacitor electrode (CPE1) and a second capacitor electrode (CPE2). The second capacitor (CAP2) may include a first capacitor electrode (CPE1) and a third capacitor electrode (CPE3). The first light-emitting element (LDa) may include a first electrode (E1), an intermediate layer (ML), and a second electrode (E2a).

[0141] As described above, the transistor (TR), the first capacitor (CAP1), and the second capacitor (CAP2) may be components included in the first pixel driving circuit (PCa).

[0142] The substrate (SUB) may form the base of the display device (DD). In one embodiment, examples of materials that may be used as the substrate (SUB) include glass, quartz, silicon, polymers, etc. These may be used alone or in combination. In addition, the substrate (SUB) may have a single-layer structure or a multi-layer structure in which multiple layers containing different materials are laminated.

[0143] A first lower conductive layer (BML1), a second lower conductive layer (BML2), and a third capacitor electrode (CPE3) may be disposed on a substrate (SUB). In one embodiment, different electrical signals may be applied to the first lower conductive layer (BML1) and the second lower conductive layer (BML2). The second power supply voltage (ELVSS, see FIG. 2) may be applied to the second lower conductive layer (BML2). Each of the first lower conductive layer (BML1), the second lower conductive layer (BML2), and the third capacitor electrode (CPE3) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof.

[0144] A first insulating layer (IL1) may be disposed on a substrate (SUB) and overlap with a first lower conductive layer (BML1), a second lower conductive layer (BML2), and a third capacitor electrode (CPE3). The first insulating layer (IL1) may prevent metal atoms or impurities from diffusing from the substrate (SUB) to the active pattern (AP). The first insulating layer (IL1) may include an insulating material. Examples of the insulating material that may be used as the first insulating layer (IL1) include silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), and the like. These may be used alone or in combination with each other.

[0145] An active pattern (AP) may be disposed on a first insulating layer (IL1). In one embodiment, the active pattern (AP) may overlap a first lower conductive layer (BML1). The active pattern (AP) may include an oxide semiconductor material, a silicon semiconductor material, and / or an organic semiconductor material. The active pattern (AP) may include a first contact area (S), a second contact area (D), and a channel area (CH) between the first contact area (S) and the second contact area (D). The first contact area (S) and the second contact area (D) may have higher conductivity than the channel area (CH).

[0146] In one embodiment, the active pattern (AP) may include an oxide semiconductor material. Examples of the oxide semiconductor material that can be used as the active pattern (AP) include indium gallium zinc oxide (IGZO), zinc tin oxide (ZTO), and indium tin zinc oxide (ITZO), or combinations thereof. These may be used alone or in combination with each other. However, the present invention is not limited thereto, and the active pattern (AP) may also include a silicon semiconductor material.

[0147] The second insulating layer (IL2) may overlap with the active pattern (AP) and be disposed on the first insulating layer (IL1). The second insulating layer (IL2) may include an insulating material. Examples of the insulating material that may be used as the second insulating layer (IL2) include silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), etc. These may be used alone or in combination with each other.

[0148] The gate electrode (GE) may be disposed on the second insulating layer (IL2). The gate electrode (GE) may overlap the channel region (CH) of the active pattern (AP). The gate electrode (GE) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof. Although not illustrated in FIG. 5, in one embodiment, the gate electrode (GE) may be in contact with the first lower conductive layer (BML1).

[0149] A first capacitor electrode (CPE1) may be disposed on a second insulating layer (IL2). The first capacitor electrode (CPE1) may overlap a third capacitor electrode (CPE3) on a plane. The first capacitor electrode (CPE1) and the third capacitor electrode (CPE3) may form a second capacitor (CAP2). The first capacitor electrode (CPE1) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, or a transparent conductive oxide.

[0150] The third insulating layer (IL3) may overlap the gate electrode (GE) and the first capacitor electrode (CPE1) and may be disposed on the second insulating layer (IL2). The third insulating layer (IL3) may include an insulating material. Examples of the insulating material that may be used as the third insulating layer (IL3) include silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), etc. These may be used alone or in combination with each other.

[0151] The second capacitor electrode (CPE2) may be disposed on the third insulating layer (IL3). The second capacitor electrode (CPE2) may overlap the first capacitor electrode (CPE1) on a plane. The first capacitor electrode (CPE1) and the second capacitor electrode (CPE2) may form a first capacitor (CAP1). The second capacitor electrode (CPE2) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof.

[0152] The fourth insulating layer (IL4) overlaps the second capacitor electrode (CPE2) and may be disposed on the third insulating layer (IL3). The fourth insulating layer (IL4) may include an insulating material. Examples of the insulating material that may be used as the fourth insulating layer (IL4) include silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), etc. These may be used alone or in combination with each other.

[0153] The first and second contact electrodes (SE, DE) may be disposed on the fourth insulating layer (IL4). The first contact electrode (SE) may be in contact with the first contact area (S1) of the active pattern (AP), and the second contact electrode (DE) may be in contact with the second contact area (D1) of the active pattern (AP). The first and second contact electrodes (SE, DE) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof.

[0154] In one embodiment, the second contact electrode (DE) may be in contact with the first lower conductive layer (BML1). However, the present invention is not limited thereto. For example, when the gate electrode (GE) is in contact with the first lower conductive layer (BML1), the second contact electrode (DE) may not be in contact with the first lower conductive layer (BML1).

[0155] Accordingly, a transistor (TR) including an active pattern (AP), a gate electrode (GE), a first contact electrode (SE), and a second contact electrode (DE) can be formed. As described above, the transistor (TR) may be a transistor connected to a light-emitting element via the anode connection electrode.

[0156] The auxiliary electrode (AUE) may be disposed in the display area (DA) on the substrate (SUB). Specifically, the auxiliary electrode (AUE) may be disposed on the fourth insulating layer (IL4) in the display area (DA). The auxiliary electrode (AUE) may be in contact with the second lower conductive layer (BML2). The second power supply voltage (ELVSS, see FIG. 2) may be applied to the auxiliary electrode (AUE). The auxiliary electrode (AUE) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof.

[0157] The second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be electrically connected to each other. The second power supply voltage (ELVSS, see FIG. 2) may be applied to the second lower conductive layer (BML2) and the auxiliary electrode (AUE). The second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be wires for transmitting the second power supply voltage (ELVSS, see FIG. 2) to the second electrodes (E2a, E2b, E2c). The second lower conductive layer (BML2) may be referred to as a first power supply line, and the auxiliary electrode (AUE) may be referred to as a second power supply line.

[0158] In one embodiment, each of the second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be provided in plurality. Throughout the display area (DA), the plurality of second lower conductive layers (BML2) and the plurality of auxiliary electrodes (AUE) may collectively define a mesh structure on a plane. For example, a plurality of second lower conductive layers (BML2), each extending in the second direction (DR2), may be arranged along the first direction (DR1), and a plurality of auxiliary electrodes (AUE), each extending in the first direction (DR1), may be arranged along the second direction (DR2). However, the present invention is not limited thereto.

[0159] In one embodiment, at least one of the second lower conductive layer (BML2) and the auxiliary electrode (AUE) may extend to a peripheral area (NDA, see FIGS. 1A and 1B). At least one of the second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be connected to a second power supply line (VSL2, see FIGS. 1A and 1B) in the peripheral area, and may receive the second power voltage (ELVSS, see FIG. 2) from the second power supply line. Accordingly, the second power voltage (ELVSS, see FIG. 2) may be applied to the second lower conductive layer (BML2) and the auxiliary electrode (AUE).

[0160] The fifth insulating layer (IL5) overlaps the first contact electrode (SE), the second contact electrode (DE), and the auxiliary electrode (AUE) and may be disposed on the fourth insulating layer (IL4). The fifth insulating layer (IL5) may include an insulating material. For example, the fifth insulating layer (IL5) may include an organic insulating material. Examples of the organic insulating material that may be used as the fifth insulating layer (IL5) include a photoresist, a polyacryl-based resin, a polyimide-based resin, a polyamide-based resin, a siloxane-based resin, an acrylic resin, an epoxy-based resin, and the like. These may be used alone or in combination with each other.

[0161] The first auxiliary connection pattern (ACPa) may be disposed on the auxiliary electrode (AUE). Specifically, the first auxiliary connection pattern (ACPa) may be disposed on the fifth insulating layer (IL5) in the display area (DA). As described above, the first auxiliary connection pattern (ACPa) may be electrically connected to the auxiliary electrode (AUE). Specifically, the first auxiliary connection pattern (ACPa) may be in contact with the auxiliary electrode (AUE) through a contact hole (CNT) penetrating the fifth insulating layer (IL5). Accordingly, the position of the first auxiliary electrode connection portion (CAa) may correspond to the position of the contact hole (CNT).

[0162] The first auxiliary connection pattern (ACPa) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof. In one embodiment, the first auxiliary connection pattern (ACPa) may have a multilayer structure in which a plurality of conductive layers are stacked. For example, the first auxiliary connection pattern (ACPa) may include a first conductive layer (CL1), a second conductive layer (CL2), and a third conductive layer (CL3) that are sequentially stacked.

[0163] In one embodiment, the first conductive layer (CL1) may include a metal and / or a transparent conductive oxide. Examples of the metal that can be used as the first conductive layer (CL1) may include titanium (Ti), molybdenum (Mo), or a combination thereof. Examples of the transparent conductive oxide that can be used as the first conductive layer (CL1) may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (InO), indium gallium oxide (IGO), aluminum zinc oxide (AZO), or a combination thereof. The first conductive layer (CL1) may have a relatively thin thickness compared to the second conductive layer (CL2).

[0164] The second conductive layer (CL2) may include a different material from the first conductive layer (CL1). For example, the second conductive layer (CL2) may include a different metal from the first conductive layer (CL1). Examples of the metal that may be used as the second conductive layer (CL2) include aluminum (Al), copper (Cu), or a combination thereof. The second conductive layer (CL2) may have a relatively thicker thickness than the first conductive layer (CL1).

[0165] The third conductive layer (CL3) may include a different material from the second conductive layer (CL2). For example, the third conductive layer (CL3) may include a different metal and / or transparent conductive oxide from the second conductive layer (CL2). Examples of the metal that can be used as the third conductive layer (CL3) may include titanium (Ti), molybdenum (Mo), or a combination thereof. Examples of the transparent conductive oxide that can be used as the third conductive layer (CL3) may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (InO), indium gallium oxide (IGO), aluminum zinc oxide (AZO), or a combination thereof. The third conductive layer (CL3) may have a relatively thin thickness compared to the second conductive layer (CL2).

[0166] In one embodiment, the first conductive layer (CL1) and the third conductive layer (CL3) may comprise the same material. However, the present invention is not limited thereto.

[0167] The side surface (CL2-S) of the second conductive layer (CL2) may be more sunken toward the center of the first auxiliary connecting pattern (ACPa) than the side surface (CL1-S) of the first conductive layer (CL1) and the side surface (CL3-S) of the third conductive layer (CL3). In other words, the side surface (CL1-S) of the first conductive layer (CL1) and the side surface (CL3-S) of the third conductive layer (CL3) may protrude outward more than the side surface (CL2-S) of the second conductive layer (CL2). Accordingly, the first auxiliary connecting pattern (ACPa) may have a tip structure due to the protruding portion of the third conductive layer (CL3) compared to the second conductive layer (CL2). For example, when etching the second conductive layer (CL2) using an etching material having a higher etching rate for the second conductive layer (CL2) than for the first conductive layer (CL1) and the third conductive layer (CL3), the first auxiliary connecting pattern (ACPa) can be formed to have the tip portion.

[0168] Meanwhile, in FIG. 5, the first auxiliary connection pattern (ACPa) is illustrated as having a three-layer structure in which first to third conductive layers (CL1, CL2, CL3) are stacked. However, the present invention is not limited thereto, and the first auxiliary connection pattern (ACPa) may have a two-layer structure in which the second conductive layer (CL2) and the third conductive layer (CL3) are stacked. For example, the first conductive layer (CL1) may be omitted.

[0169] The anode connection electrode may be arranged on the fifth insulating layer (IL5). Although not shown in the cross-sectional view of Fig. 5, the anode connection electrode may be in contact with the second contact electrode (DE) and the first electrode (E1). Accordingly, the anode connection electrode may electrically connect the transistor (TR) and the first light-emitting element (LDa). The anode connection electrode may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof.

[0170] The sixth insulating layer (IL6) may overlap the anode connection electrode and be disposed on the fifth insulating layer (IL5). For example, the sixth insulating layer (IL6) may partially overlap the first auxiliary connection pattern (ACPa) and be disposed on the fifth insulating layer (IL5). The sixth insulating layer (IL6) may define a first sub-opening (SO1) that exposes a portion of the first auxiliary connection pattern (ACPa). Specifically, the first sub-opening (SO1) may expose the tip portion of the first auxiliary connection pattern (ACPa). The sixth insulating layer (IL6) may include an insulating material. For example, the sixth insulating layer (IL6) may include an organic insulating material. Examples of the organic insulating material that can be used as the sixth insulating layer (IL6) include photoresist, polyacryl-based resin, polyimide-based resin, polyamide-based resin, siloxane-based resin, acrylic resin, epoxy-based resin, etc. These may be used alone or in combination with each other.

[0171] The first electrode (E1) may be disposed in the display area (DA) on the substrate (SUB). Specifically, the first electrode (E1) may be disposed on the sixth insulating layer (IL6). The first electrode (E1) may be in contact with the anode connection electrode. Accordingly, the first electrode (E1) may be electrically connected to the transistor (TR) through the anode connection electrode. The first electrode (E1) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof. As described above, the first electrode (E1) may function as the anode of FIG. 2.

[0172] A pixel defining layer (PDL) may be disposed on a substrate (SUB) and may define a pixel opening that exposes a first electrode (E1). Specifically, the pixel defining layer (PDL) may be disposed on a sixth insulating layer (IL6) and the first electrode (E1) and may define the pixel opening that exposes at least a portion of the first electrode (E1). A first emission area (EAa) may be defined by the pixel opening.

[0173] In addition, the pixel defining layer (PDL) can further define a second sub-aperture (SO2) corresponding to the first sub-aperture (SO1) of the sixth insulating layer (IL6). The second sub-aperture (SO2) can overlap the first sub-aperture (SO1) on a plane, and the first sub-aperture (SO1) and the second sub-aperture (SO2) can be spatially connected to each other. That is, an opening (OP) through which the first sub-aperture (SO1) and the second sub-aperture (SO2) are connected can be defined, and the opening (OP) can expose at least a part of the first auxiliary connecting pattern (ACPa). Specifically, the opening (OP) can expose the tip portion of the first auxiliary connecting pattern (ACPa).

[0174] The pixel defining layer (PDL) may include an insulating material. For example, the pixel defining layer (PDL) may include an organic insulating material. Examples of the organic insulating material that may be used as the pixel defining layer (PDL) include photoresist, polyacryl-based resin, polyimide-based resin, polyamide-based resin, siloxane-based resin, acrylic resin, epoxy-based resin, etc. These may be used alone or in combination with each other. In one embodiment, the pixel defining layer (PDL) may further include an inorganic material or an organic material containing a light-blocking material having a black color.

[0175] The separator (SPR) may be disposed on the pixel defining layer (PDL). The width of the upper portion of the separator (SPR) may be greater than the width of the lower portion of the separator (SPR). For example, the side surface of the separator (SPR) connecting the upper surface and the lower surface of the separator (SPR) may have a reverse tapered slope. In other words, the separator (SPR) may have a cross-sectional shape of an inverted trapezoid.

[0176] In Fig. 5, the side surface of the separator (SPR) is illustrated as having a single reverse tapered slope. However, the present invention is not limited thereto, and the side surface of the separator (SPR) may have multiple reverse tapered slopes. That is, the separator (SPR) may have a double reverse tapered structure (see Fig. 9).

[0177] An intermediate layer (ML) may be disposed on the first electrode (E1) and the pixel defining layer (PDL). A portion of the intermediate layer (ML) may be disposed within the pixel opening of the pixel defining layer (PDL). In one embodiment, the intermediate layer (ML) may include a first functional layer including an organic material, an emission layer disposed on the first functional layer and including an emission material, and a second functional layer disposed on the emission layer and including an organic material. For example, the first functional layer may include a hole injection layer, a hole transport layer, or the like, and the second functional layer may include an electron transport layer, an electron injection layer, or a combination thereof.

[0178] A shadow region in which it is difficult to deposit an intermediate layer (ML) may exist around a separator (SPR) having a reverse tapered slope. Accordingly, the intermediate layer (ML) in the shadow region and / or around the shadow region may have a structure in which it is separated (or disconnected) by the separator (SPR). For example, the first functional layer and the second functional layer included in the intermediate layer (ML) may have a structure in which they are separated (or disconnected) by the separator (SPR). Accordingly, current leakage between the first light-emitting element (LDa) and adjacent other light-emitting elements (e.g., the second light-emitting element (LDb) and the third light-emitting element (LDc)) can be reduced. For example, color mixing caused by unnecessary light emission of adjacent other light-emitting elements can be prevented. Accordingly, the display quality of the display device (DD) can be improved.

[0179] A first dummy layer (DP1) may be disposed on the separator (SPR). The first dummy layer (DP1) may be formed by having a structure in which the intermediate layer (ML) is separated (or disconnected) by the separator (SPR). That is, the first dummy layer (DP1) may be formed through the same process as the intermediate layer (ML). In one embodiment, the first dummy layer (DP1) may be omitted.

[0180] The intermediate layer (ML) may also be separated (or disconnected) by the tip portion of the first auxiliary connecting pattern (ACPa). As the intermediate layer (ML) is separated (or disconnected) by the tip portion of the first auxiliary connecting pattern (ACPa), the intermediate layer (ML) may expose at least a portion of the side surface (CL2-S) of the second conductive layer (CL2). Accordingly, the second electrode (E2a) of the first light-emitting element (LDa) may be brought into contact with the side surface (CL2-S) of the second conductive layer (CL2).

[0181] The electrode layer (E2L) may be disposed on the intermediate layer (ML). The electrode layer (E2L) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof. In one embodiment, the electrode layer (E2L) may have a single-layer structure. However, the present invention is not limited thereto. In another embodiment, the electrode layer (E2L) may have a multi-layer structure in which a plurality of conductive layers are laminated. For example, the electrode layer (E2L) may have a two-layer structure in which a first sub-electrode layer including a metal material and a second sub-electrode layer including a transparent conductive oxide are laminated.

[0182] A shadow region in which it is difficult to deposit an electrode layer (E2L) may exist around a separator (SPR) having a reverse tapered slope. In the shadow region and / or around the shadow region, the electrode layer (E2L) may have a structure separated (or disconnected) by the separator (SPR). For example, the electrode layer (E2L) may be separated (or disconnected) into a second electrode (E2a) of a first light-emitting element (LDa), a second electrode (E2b) of a second light-emitting element (LDb), and a second electrode (E2c) of a third light-emitting element (LDc).

[0183] The second electrode (E2a) of the first light-emitting element (LDa) may be connected to the first auxiliary connecting pattern (ACPa). Specifically, the second electrode (E2a) may be in contact with the side surface (CL2-S) of the second conductive layer (CL2). For example, when the deposition angle of the deposition process for forming the electrode layer (E2L) is greater than the deposition angle of the deposition process for forming the intermediate layer (ML), the electrode layer (E2L) (specifically, the second electrode (E2a)) may be formed to overlap the intermediate layer (ML) disconnected by the tip portion and to be in contact with the side surface (CL2-S) of the second conductive layer (CL2). As a result, the second electrode (E2a) may be electrically connected to the auxiliary electrode (AUE) through the first auxiliary connecting pattern (ACPa). Accordingly, the second electrode (E2a) may receive the second power voltage (ELVSS, see FIG. 2) from the auxiliary electrode (AUE).

[0184] In one embodiment, the electrode layer (E2L) (specifically, the second electrode (E2a)) may be separated (or disconnected) by the tip portion of the first auxiliary connecting pattern (ACPa). However, the present invention is not limited thereto, and the electrode layer (E2L) (specifically, the second electrode (E2a)) may be formed to extend without being separated by the tip portion.

[0185] A second dummy layer (DP2) may be disposed on the separator (SPR). Specifically, the second dummy layer (DP2) may be disposed on the first dummy layer (DP1). The second dummy layer (DP2) may be formed by having a structure in which the electrode layer (E2L) is separated (or disconnected) by the separator (SPR). That is, the second dummy layer (DP2) may be formed through the same process as the electrode layer (E2L). In one embodiment, the second dummy layer (DP2) may be omitted.

[0186] The encapsulation layer (ENC) may be disposed on the electrode layer (E2L). The encapsulation layer (ENC) may entirely overlap the electrode layer (E2L), the separator (SPR), the first dummy layer (DP1), and the second dummy layer (DP2). In one embodiment, the encapsulation layer (ENC) may include a first inorganic encapsulation layer (IEL1) including an inorganic insulating material, an organic encapsulation layer (OEL) disposed on the first inorganic encapsulation layer (IEL1) and including an organic insulating material, and a second inorganic encapsulation layer (IEL2) disposed on the organic encapsulation layer (OEL) and including an inorganic insulating material.

[0187] Although not shown in FIG. 5, in one embodiment, a touch-sensitive layer may be disposed on the encapsulation layer (ENC). For example, the touch-sensitive layer may include a plurality of touch electrode arrays for sensing a user's touch in an electrostatic capacitive manner, a touch pad portion, and a plurality of touch wires electrically connecting the touch pad portion and the touch electrode arrays. However, the present invention is not limited thereto. Optionally, the touch-sensitive layer may be omitted.

[0188] According to the present invention, the display device (DD) may include an auxiliary electrode (AUE) to which the second power supply voltage (ELVSS, see FIG. 2) is applied, and auxiliary connection patterns (ACPa, ACPb, ACPc) that contact the auxiliary electrode (AUE) and have the tip portion. Since the auxiliary connection patterns (ACPa, ACPb, ACPc) have the tip portion, the electrode layer (E2L) (e.g., a cathode) may be easily connected to the auxiliary connection patterns (ACPa, ACPb, ACPc). The electrode layer (E2L) may be electrically connected to the auxiliary electrode (AUE) through the auxiliary connection patterns (ACPa, ACPb, ACPc). Accordingly, the electrode layer (E2L) may receive the second power supply voltage from the auxiliary electrode (AUE), and a voltage drop phenomenon of the second power supply voltage provided to the electrode layer (E2L) may be improved. Therefore, the display quality of the display device (DD) can be improved.

[0189] FIGS. 6 and 7 are schematic plan views illustrating some areas of a display device according to one embodiment of the present invention. FIG. 8 is a schematic plan view that enlarges one of the unit light-emitting areas of FIG. 7. FIG. 9 is a schematic cross-sectional view taken along line II-II' of FIG. 8.

[0190] Specifically, in FIGS. 6 and 7, an area in which a total of four unit light-emitting areas (UEA1, UEA2) forming a matrix of two rows and two columns are arranged is schematically illustrated, and in FIG. 8, a first unit light-emitting area (UEA1) among the unit light-emitting areas (UEA1, UEA2) is schematically illustrated in an enlarged manner. FIGS. 6 and 7 may correspond to FIG. 3, FIG. 8 may correspond to FIG. 4, and FIG. 9 may correspond to FIG. 5.

[0191] For convenience of explanation, some of the configurations illustrated in FIG. 9 are omitted or emphasized in FIGS. 6 to 8. Specifically, FIG. 6 is a schematic plan view showing the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) and the auxiliary connection electrode (ACE), and FIG. 7 is a schematic plan view showing a separator (SPR) further arranged on the auxiliary connection electrode (ACE) of FIG. 6.

[0192] A display device (DD-1) according to an embodiment described with reference to FIGS. 6 to 9 may be substantially the same as the display device (DD) described with reference to FIGS. 1a to 5, except that it further includes an auxiliary connection electrode (ACE) electrically connecting the auxiliary connection patterns (ACPa, ACPb, ACPc) and the second electrodes (E2a, E2b, E2c). Therefore, any redundant description will be omitted or simplified.

[0193] Referring to FIGS. 6 to 9, a display device (DD-1) according to one embodiment may include first to third pixel driving circuits (PCa, PCb, PCc), first to third light-emitting elements (LDa, LDb, LDc), first to third auxiliary connection patterns (ACPa, ACPb, ACPc), an auxiliary connection electrode (ACE), and a separator (SPR).

[0194] The auxiliary connecting electrode (ACE) may not overlap each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. The auxiliary connecting electrode (ACE) may be disposed between the first to third light-emitting regions (EAa, EAb, EAc) on a plane. Specifically, the auxiliary connecting electrode (ACE) may be disposed between the first light-emitting region (EAa) and the second light-emitting region (EAb), between the second light-emitting region (EAb) and the third light-emitting region (EAc), and between the first light-emitting region (EAa) and the third light-emitting region (EAc) on a plane. The auxiliary connecting electrode (ACE) may surround at least a portion of each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. In one embodiment, as illustrated in FIGS. 6 to 8, the auxiliary connecting electrode (ACE) may entirely surround each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane.

[0195] In one embodiment, the auxiliary connecting electrode (ACE) may have a mesh structure surrounding each of the first to third light-emitting areas (EAa, EAb, EAc) on a plane. For example, a portion of the auxiliary connecting electrode (ACE) surrounding the first light-emitting area (EAa), a portion of the auxiliary connecting electrode (ACE) surrounding the second light-emitting area (EAb), and a portion of the auxiliary connecting electrode (ACE) surrounding the third light-emitting area (EAc) may be integrally connected.

[0196] The separator (SPR) may be disposed between the first to third light-emitting regions (EAa, EAb, EAc) on a plane. Specifically, the separator (SPR) may be disposed between the first light-emitting region (EAa) and the second light-emitting region (EAb), between the second light-emitting region (EAb) and the third light-emitting region (EAc), and between the first light-emitting region (EAa) and the third light-emitting region (EAc) on a plane. The separator (SPR) may surround at least a portion of each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. In one embodiment, as illustrated in FIGS. 6 to 8, the separator (SPR) may entirely surround each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane.

[0197] The separator (SPR) can separate (or disconnect) the electrode layer (E2L) in the display area (DA) into the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc). Accordingly, the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc) can be spaced apart from each other on a plane.

[0198] The separator (SPR) can define first to third open areas (OA1, OA2, OA3) corresponding to the second electrodes (E2a, E2b, E2c), respectively. For example, the separator (SPR) can have a mesh structure surrounding each of the second electrodes (E2a, E2b, E2c) on a plane. The second electrode (E2a) of the first light-emitting element (LEDa) can be arranged in the first open area (OA1) of the separator (SPR), the second electrode (E2b) of the second light-emitting element (LEDb) can be arranged in the second open area (OA2) of the separator (SPR), and the second electrode (E2c) of the third light-emitting element (LEDc) can be arranged in the third open area (OA3) of the separator (SPR). Each of the first to third open areas (OA1, OA2, OA3) may expose a portion of the auxiliary connecting electrode (ACE).

[0199] In one embodiment, as illustrated in FIGS. 6 to 8, the planar profile of the auxiliary connecting electrode (ACE) may correspond to the planar profile of the separator (SPR). In one embodiment, the width of the auxiliary connecting electrode (ACE) may be greater than the width of the separator (SPR). For example, the entire separator (SPR) may overlap the auxiliary connecting electrode (ACE) in the plan. The separator (SPR) may overlap the central portion of the auxiliary connecting electrode (ACE) in the width direction and expose both sides of the auxiliary connecting electrode (ACE) without covering them. As described below, the second electrodes (E2a, E2b, E2c) may contact the both sides of the auxiliary connecting electrode (ACE) that are exposed without overlapping the separator (SPR).

[0200] Hereinafter, the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) will be described in more detail, focusing on the first unit light-emitting area (UEA1) of FIG. 8. The following description regarding the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) can be equally applied to all unit light-emitting areas.

[0201] As described above, the display device (DD-1) may include first to third auxiliary connection patterns (ACPa, ACPb, ACPc) and an auxiliary connection electrode (ACE). The first auxiliary connection pattern (ACPa) and the auxiliary connection electrode (ACE) may electrically connect the first light-emitting element (LDa) and the auxiliary electrode (AUE). The second auxiliary connection pattern (ACPb) and the auxiliary connection electrode (ACE) may electrically connect the second light-emitting element (LDb) and the auxiliary electrode (AUE). The third auxiliary connection pattern (ACPc) and the auxiliary connection electrode (ACE) may electrically connect the third light-emitting element (LDc) and the auxiliary electrode (AUE). The second power supply voltage (ELVSS, see FIG. 2) may be applied to the auxiliary electrode (AUE).

[0202] The first auxiliary connection pattern (ACPa) may include a first auxiliary electrode connection portion (CAa) and a first light-emitting connection portion (CNa).

[0203] The first auxiliary electrode connection portion (CAa) may be a portion of the first auxiliary connection pattern (ACPa) that is connected to the auxiliary electrode (AUE). Specifically, the position of the first auxiliary electrode connection portion (CAa) may correspond to the position of a contact hole (CNT) that exposes the auxiliary electrode (AUE) and penetrates the fifth insulating layer (IL5, see FIG. 9).

[0204] The first light-emitting connection portion (CNa) may be a portion of the first auxiliary connection pattern (ACPa) that is connected to the auxiliary connection electrode (ACE). Specifically, the first light-emitting connection portion (CNa) may be a portion of the first auxiliary connection pattern (ACPa) that is exposed from the sixth insulating layer (IL6) and the pixel defining layer (PDL) to be connected to the auxiliary connection electrode (ACE). Accordingly, the position of the first light-emitting connection portion (CNa) may correspond to the position of the opening (OP) that exposes the first auxiliary connection pattern (ACPa) and penetrates the pixel defining layer (PDL) and the sixth insulating layer (IL6). In a plan view, the first light-emitting connection portion (CNa) may not overlap the first light-emitting area (EAa). For example, in a plan view, the first light-emitting connection portion (CNa) may be located between the first light-emitting area (EAa) and the separator (SPR). For example, on a plane, the first light-emitting connector (CNa) may be located within the first open area (OA1).

[0205] The auxiliary connection electrode (ACE) may be connected to the first auxiliary connection pattern (ACPa). For example, the auxiliary connection electrode (ACE) may be in contact with the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa). However, the present invention is not limited thereto, and the auxiliary connection electrode (ACE) may not be in contact with the first auxiliary connection pattern (ACPa) (for example, may not be in direct contact). For example, the auxiliary connection electrode (ACE) may be in contact with a capping layer that is in contact with the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa), and may be electrically connected to the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa) through the capping layer. The capping layer may include a conductive material. For example, the capping layer may be formed substantially simultaneously with the first electrode (E1) and may include the same material.

[0206] The second electrode (E2a) of the first light-emitting element (LDa) can be connected to the auxiliary connection electrode (ACE). Specifically, the second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the auxiliary connection electrode (ACE). The second electrode (E2a) of the first light-emitting element (LDa) can be in contact with one side of the auxiliary connection electrode (ACE) that is exposed without overlapping with the separator (SPR). Accordingly, the auxiliary connection electrode (ACE) can electrically connect the first auxiliary connection pattern (ACPa) and the second electrode (E2a) of the first light-emitting element (LDa). As a result, the second electrode (E2a) of the first light-emitting element (LDa) can be electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrode (ACE) and the first auxiliary connection pattern (ACPa).

[0207] In one embodiment, the second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the auxiliary connection electrode (ACE) at a position that does not overlap with the first light-emitting area (EAa). Therefore, the second electrode (E2a) of the first light-emitting element (LDa) can be electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrode (ACE) and the first auxiliary connection pattern (ACPa) without reducing the light-emitting area of ​​the first light-emitting area (EAa).

[0208] The second auxiliary connection pattern (ACPb) may include a second auxiliary electrode connection portion (CAb) and a second light-emitting connection portion (CNb). The second auxiliary electrode connection portion (CAb) may be a portion of the second auxiliary connection pattern (ACPb) that is connected to the auxiliary electrode (AUE). The second light-emitting connection portion (CNb) may be a portion of the second auxiliary connection pattern (ACPb) that is connected to the auxiliary connection electrode (ACE). The auxiliary connection electrode (ACE) may electrically connect the second auxiliary connection pattern (ACPb) and the second electrode (E2b) of the second light-emitting element (LDb). As a result, the second electrode (E2b) of the second light-emitting element (LDb) may be electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrode (ACE) and the second auxiliary connection pattern (ACPb).

[0209] On the plane, the second light-emitting connection (CNb) may not overlap the second light-emitting area (EAb). For example, on the plane, the second light-emitting connection (CNb) may be located between the second light-emitting area (EAb) and the separator (SPR). For example, on the plane, the second light-emitting connection (CNb) may be located within the second open area (OA2).

[0210] The third auxiliary connection pattern (ACPc) may include a third auxiliary electrode connection portion (CAc) and a third light-emitting connection portion (CNc). The third auxiliary electrode connection portion (CAc) may be a portion of the third auxiliary connection pattern (ACPc) that is connected to the auxiliary electrode (AUE). The third light-emitting connection portion (CNc) may be a portion of the third auxiliary connection pattern (ACPc) that is connected to the auxiliary connection electrode (ACE). The auxiliary connection electrode (ACE) may electrically connect the third auxiliary connection pattern (ACPc) and the second electrode (E2c) of the third light-emitting element (LDc). As a result, the second electrode (E2c) of the third light-emitting element (LDc) may be electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrode (ACE) and the third auxiliary connection pattern (ACPc).

[0211] On the plane, the third light-emitting connector (CNc) may not overlap the third light-emitting area (EAc). For example, on the plane, the third light-emitting connector (CNc) may be located between the third light-emitting area (EAc) and the separator (SPR). For example, on the plane, the third light-emitting connector (CNc) may be located within the third open area (OAc).

[0212] Below, the cross-sectional structure of the display device (DD-1) will be described in more detail, focusing on the first light-emitting area (EAa). The following description of the cross-sectional structure of the display device (DD-1) can be equally applied to all light-emitting areas.

[0213] As illustrated in FIG. 9, the display device (DD-1) may include a substrate (SUB), a first lower conductive layer (BML1), a second lower conductive layer (BML2), a transistor (TR), a first capacitor (CAP1), a second capacitor (CAP2), an auxiliary electrode (AUE), the anode connection electrode, a first auxiliary connection pattern (ACPa), first to sixth insulating layers (IL1, IL2, IL3, IL4, IL5, IL6), a pixel defining layer (PDL), a first light-emitting element (LDa), an auxiliary connection electrode (ACE), a separator (SPR), a first dummy layer (DP1), a second dummy layer (DP2), and an encapsulation layer (ENC). Hereinafter, descriptions overlapping with those of the display device (DD) described with reference to FIG. 5 will be omitted or simplified.

[0214] A second lower conductive layer (BML2) may be disposed on the substrate (SUB). The second power supply voltage (ELVSS, see FIG. 2) may be applied to the second lower conductive layer (BML2).

[0215] The auxiliary electrode (AUE) may be disposed on the fourth insulating layer (IL4) in the display area (DA). The auxiliary electrode (AUE) may be in contact with the second lower conductive layer (BML2). The second power supply voltage may be applied to the auxiliary electrode (AUE).

[0216] The second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be electrically connected to each other. The second power voltage may be applied to the second lower conductive layer (BML2) and the auxiliary electrode (AUE). The second lower conductive layer (BML2) and the auxiliary electrode (AUE) may be wires for transmitting the second power voltage to the second electrodes (E2a, E2b, E2c). For example, the second lower conductive layer (BML2) may be referred to as a first power transmission line, and the auxiliary electrode (AUE) may be referred to as a second power transmission line.

[0217] A first auxiliary connection pattern (ACPa) may be disposed on a fifth insulating layer (IL5) in a display area (DA). The first auxiliary connection pattern (ACPa) may be disposed between an auxiliary electrode (AUE) and an auxiliary connection electrode (ACE). The first auxiliary connection pattern (ACPa) may be connected to the auxiliary electrode (AUE). Specifically, the first auxiliary connection pattern (ACPa) may be in contact with the auxiliary electrode (AUE) through a contact hole (CNT) penetrating the fifth insulating layer (IL5).

[0218] The sixth insulating layer (IL6) may overlap the anode connection electrode and be disposed on the fifth insulating layer (IL5). In addition, the sixth insulating layer (IL6) may partially overlap the first auxiliary connection pattern (ACPa) and be disposed on the fifth insulating layer (IL5). The sixth insulating layer (IL6) may define a first sub-opening (SO1) that exposes at least a portion of the first auxiliary connection pattern (ACPa).

[0219] The first electrode (E1) may be disposed on the sixth insulating layer (IL6). The first electrode (E1) may be in contact with the anode connection electrode. Accordingly, the first electrode (E1) may be electrically connected to the transistor (TR) through the anode connection electrode.

[0220] A pixel defining layer (PDL) may be disposed on the sixth insulating layer (IL6) and the first electrode (E1). The pixel defining layer (PDL) may define a pixel opening that exposes at least a portion of the first electrode (E1). A first emission area (EAa) may be defined by the pixel opening.

[0221] Additionally, the pixel defining layer (PDL) can further define a second sub-aperture (SO2) corresponding to the first sub-aperture (SO1) of the sixth insulating layer (IL6). The second sub-aperture (SO2) can overlap the first sub-aperture (SO1) on a plane, and the first sub-aperture (SO1) and the second sub-aperture (SO2) can be spatially connected to each other. That is, an opening (OP) can be defined in which the first sub-aperture (SO1) and the second sub-aperture (SO2) are connected. The opening (OP) can expose at least a portion of the first auxiliary connecting pattern (ACPa).

[0222] The auxiliary connection electrode (ACE) may be disposed on the first auxiliary connection pattern (ACPa), the sixth insulating layer (IL6), and the pixel defining layer (PDL). As described above, the auxiliary connection electrode (ACE) may be connected to the first auxiliary connection pattern (ACPa). Specifically, the auxiliary connection electrode (ACE) may be connected to the first auxiliary connection pattern (ACPa) through an opening (OP) penetrating the sixth insulating layer (IL6) and the pixel defining layer (PDL). Accordingly, the position of the first light-emitting connection portion (CNa) may correspond to the position of the opening (OP).

[0223] The auxiliary connecting electrode (ACE) may include a conductive material such as a metal, an alloy, a conductive metal oxide, a conductive metal nitride, a transparent conductive oxide, or a combination thereof. In one embodiment, the auxiliary connecting electrode (ACE) may have a single-layer structure or a multi-layer structure in which multiple conductive layers are stacked.

[0224] In one embodiment, the auxiliary connecting electrode (ACE) may include a transparent conductive oxide. Examples of the transparent conductive oxide that can be used for the auxiliary connecting electrode (ACE) include indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), zinc oxide (ZnO), indium oxide (InO), tin oxide (SnO), gallium oxide (GaO), aluminum zinc oxide (AZO), or combinations thereof. These may be used alone or in combination with each other. However, the present invention is not limited thereto, and the auxiliary connecting electrode (ACE) may also include a conductive material such as a metal, an alloy, a conductive metal nitride, or a combination thereof.

[0225] A separator (SPR) may be disposed on a pixel defining layer (PDL) and an auxiliary connecting electrode (ACE). The separator (SPR) may overlap the auxiliary connecting electrode (ACE) in a plane. For example, the separator (SPR) may cover a portion (e.g., a central portion in the width direction) of the auxiliary connecting electrode (ACE). For example, a lower surface of the separator (SPR) may be in contact with a top surface of the auxiliary connecting electrode (ACE).

[0226] The side surface of the separator (SPR) connecting the upper surface and the lower surface of the separator (SPR) may have a reverse tapered slope. In other words, the cross-section of at least a portion of the separator (SPR) may be an inverse trapezoid.

[0227] In one embodiment, as illustrated in FIG. 9, the side surface of the separator (SPR) may have a plurality of reverse tapered slopes. That is, the separator (SPR) may have a double reverse tapered structure. Accordingly, the separation (or disconnection) of the electrode layer (E2L) by the separator (SPR) can be more easily implemented.

[0228] An intermediate layer (ML) may be disposed on the first electrode (E1), the pixel defining layer (PDL), and the auxiliary connecting electrode (ACE). A portion of the intermediate layer (ML) may be disposed within the pixel opening of the pixel defining layer (PDL).

[0229] A shadow region in which it is difficult to deposit an intermediate layer (ML) may exist around a separator (SPR) having a reverse tapered slope. Accordingly, the intermediate layer (ML) in the shadow region and / or around the shadow region may have a structure separated (or disconnected) by the separator (SPR). Since the intermediate layer (ML) has a separated (or disconnected) structure, as illustrated in FIG. 9, the intermediate layer (ML) may expose a part of the auxiliary connection electrode (ACE) (e.g., a part of the one side portion adjacent to the separator (SPR)) at a position adjacent to or overlapping the separator (SPR). Accordingly, the second electrode (E2a) of the first light-emitting element (LDa) may be brought into contact with the auxiliary connection electrode (ACE).

[0230] The electrode layer (E2L) may be disposed on the intermediate layer (ML). A shadow region in which the electrode layer (E2L) is difficult to deposit may exist around the separator (SPR) having a reverse tapered slope. The electrode layer (E2L) may have a structure separated (or disconnected) by the separator (SPR) in the shadow region and / or around the shadow region. For example, the electrode layer (E2L) may be separated (or disconnected) into a second electrode (E2a) of the first light-emitting element (LDa), a second electrode (E2b) of the second light-emitting element (LDb), and a second electrode (E2c) of the third light-emitting element (LDc).

[0231] As illustrated in FIG. 9, the electrode layer (E2L) (specifically, the second electrode (E2a)) can be connected to the auxiliary connecting electrode (ACE). Specifically, the electrode layer (E2L) (specifically, the second electrode (E2a)) can be in contact with the auxiliary connecting electrode (ACE) at a position adjacent to or overlapping the separator (SPR). For example, the electrode layer (E2L) (specifically, the second electrode (E2a)) can be in contact with the auxiliary connecting electrode (ACE) in a region that overlaps the upper portion of the separator (SPR) in a plane. For example, when the deposition angle of the deposition process for forming the electrode layer (E2L) is greater than the deposition angle of the deposition process for forming the intermediate layer (ML), the electrode layer (E2L) (specifically, the second electrode (E2a)) can be formed to be in contact with the auxiliary connecting electrode (ACE) while overlapping a side portion of the disconnected intermediate layer (ML). As a result, the second electrode (E2a) can be electrically connected to the auxiliary electrode (AUE) via the auxiliary connection electrode (ACE) and the first auxiliary connection pattern (ACPa). Accordingly, the second electrode (E2a) can receive the second power supply voltage (ELVSS, see FIG. 2) from the auxiliary electrode (AUE).

[0232] The encapsulation layer (ENC) may be disposed on the electrode layer (E2L). The encapsulation layer (ENC) may entirely overlap the electrode layer (E2L), the auxiliary connecting electrode (ACE), the separator (SPR), the first dummy layer (DP1), and the second dummy layer (DP2).

[0233] According to the present invention, the display device (DD-1) may include auxiliary connection patterns (ACPa, ACPb, ACPc), an auxiliary connection electrode (ACE), and a separator (SPR). Accordingly, the electrode layer (E2L) (e.g., a cathode) may be easily electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrode (ACE) and the auxiliary connection patterns (ACPa, ACPb, ACPc). Accordingly, the electrode layer (E2L) may receive the second power voltage (ELVSS, see FIG. 2) from the auxiliary electrode (AUE), and a voltage drop phenomenon of the second power voltage provided to the electrode layer (E2L) may be improved. Accordingly, the display quality of the display device (DD-1) may be improved.

[0234] FIG. 10 and FIG. 11 are schematic plan views illustrating some areas of a display device according to one embodiment of the present invention. FIG. 12 is a schematic plan view enlarged to illustrate one of the unit light-emitting areas of FIG. 11. FIG. 13 is a schematic cross-sectional view taken along line III-III' of FIG. 12.

[0235] Specifically, in FIGS. 10 and 11, an area in which a total of four unit light-emitting areas (UEA1, UEA2) forming a matrix of two rows and two columns are arranged is schematically illustrated, and in FIG. 12, a first unit light-emitting area (UEA1) among the unit light-emitting areas (UEA1, UEA2) is schematically illustrated in an enlarged manner. FIGS. 10 to 13 may correspond to FIGS. 6 to 9, respectively.

[0236] For convenience of explanation, some of the configurations illustrated in FIG. 13 are omitted or emphasized in FIGS. 10 to 12. Specifically, FIG. 10 is a schematic plan view showing the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) and the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc), and FIG. 11 is a schematic plan view showing a separator (SPR) further arranged on the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) of FIG. 10.

[0237] A display device (DD-2) according to an embodiment described with reference to FIGS. 10 to 13 may be substantially the same as the display device (DD-1) described with reference to FIGS. 6 to 9, except that the auxiliary connection electrode (for example, the auxiliary connection electrode (ACE) of FIG. 6) electrically connecting the auxiliary connection patterns (ACPa, ACPb, ACPc) and the second electrodes (E2a, E2b, E2c) is separated into a plurality of auxiliary connection electrodes (ACEa, ACEb, ACEc) that are spaced apart from each other. Therefore, any redundant description will be omitted or simplified.

[0238] Referring to FIGS. 10 to 13, a display device (DD-2) according to one embodiment may include first to third pixel driving circuits (PCa, PCb, PCc), first to third light-emitting elements (LDa, LDb, LDc), first to third auxiliary connection patterns (ACPa, ACPb, ACPc), first to third auxiliary connection electrodes (ACEa, ACEb, ACEc), and a separator (SPR).

[0239] The first auxiliary connecting electrode (ACEa) may not overlap the first light-emitting area (EAa) on a plane. In one embodiment, the first auxiliary connecting electrode (ACEa) may surround at least a portion of the first light-emitting area (EAa) on a plane. For example, as illustrated in FIG. 10, the first auxiliary connecting electrode (ACEa) may have a closed ring shape that entirely surrounds the first light-emitting area (EAa) on a plane.

[0240] The second auxiliary connecting electrode (ACEb) may not overlap the second light-emitting area (EAb) on a plane. In one embodiment, the second auxiliary connecting electrode (ACEb) may surround at least a portion of the second light-emitting area (EAb) on a plane. For example, as illustrated in FIG. 10, the second auxiliary connecting electrode (ACEb) may have a closed ring shape that entirely surrounds the second light-emitting area (EAb) on a plane.

[0241] The third auxiliary connecting electrode (ACEc) may not overlap the third light-emitting area (EAc) on a plane. In one embodiment, the third auxiliary connecting electrode (ACEc) may surround at least a portion of the third light-emitting area (EAc) on a plane. For example, as illustrated in FIG. 10, the third auxiliary connecting electrode (ACEc) may have a closed ring shape that entirely surrounds the third light-emitting area (EAc) on a plane.

[0242] The first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) may be spaced apart from each other on a plane. In other words, the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) may be different patterns that are physically separated from each other. The first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) may be formed through the same process. That is, the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) include the same material and may be formed substantially simultaneously.

[0243] The separator (SPR) may be disposed between the first to third light-emitting regions (EAa, EAb, EAc) on a plane. Specifically, the separator (SPR) may be disposed between the first light-emitting region (EAa) and the second light-emitting region (EAb), between the second light-emitting region (EAb) and the third light-emitting region (EAc), and between the first light-emitting region (EAa) and the third light-emitting region (EAc) on a plane. The separator (SPR) may surround at least a portion of each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane. In one embodiment, as illustrated in FIGS. 10 to 12, the separator (SPR) may entirely surround each of the first to third light-emitting regions (EAa, EAb, EAc) on a plane.

[0244] The separator (SPR) can separate (or disconnect) the electrode layer (E2L) in the display area (DA) into the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc). Accordingly, the second electrode (E2a) of the first light-emitting element (LDa), the second electrode (E2b) of the second light-emitting element (LDb), and the second electrode (E2c) of the third light-emitting element (LDc) can be spaced apart from each other on a plane.

[0245] The separator (SPR) can define first to third open areas (OA1, OA2, OA3) corresponding to the second electrodes (E2a, E2b, E2c), respectively. For example, the separator (SPR) can have a mesh structure surrounding each of the second electrodes (E2a, E2b, E2c) on a plane. The second electrode (E2a) of the first light-emitting element (LEDa) can be arranged in the first open area (OA1) of the separator (SPR), the second electrode (E2b) of the second light-emitting element (LEDb) can be arranged in the second open area (OA2) of the separator (SPR), and the second electrode (E2c) of the third light-emitting element (LEDc) can be arranged in the third open area (OA3) of the separator (SPR). The first open area (OA1) may expose a portion of the first auxiliary connection electrode (ACEa), the second open area (OA2) may expose a portion of the second auxiliary connection electrode (ACEb), and the third open area (OA3) may expose a portion of the third auxiliary connection electrode (ACEc).

[0246] The separator (SPR) may partially overlap each of the first to third auxiliary connecting electrodes (ACEa, ACEb, ACEc). For example, as illustrated in FIGS. 10 to 12 , the first auxiliary connecting electrode (ACEa) may include a first side portion that is relatively far from the first light-emitting area (EAa) in the width direction and a second side portion that is relatively close to the first light-emitting area (EAa). The separator (SPR) may overlap the first side portion of the first auxiliary connecting electrode (ACEa) and may be exposed without overlapping the second side portion of the first auxiliary connecting electrode (ACEa).

[0247] Similarly, the second auxiliary connecting electrode (ACEb) may include a first side portion that is relatively far from the second light-emitting area (EAb) in the width direction and a second side portion that is relatively close to the second light-emitting area (EAb). The separator (SPR) may overlap the first side portion of the second auxiliary connecting electrode (ACEb) and may be exposed without overlapping the second side portion of the second auxiliary connecting electrode (ACEb).

[0248] The third auxiliary connecting electrode (ACEc) may include a first side portion that is relatively far from the third light-emitting area (EAc) in the width direction and a second side portion that is relatively close to the third light-emitting area (EAc). The separator (SPR) may overlap the first side portion of the third auxiliary connecting electrode (ACEc) and may be exposed without overlapping the second side portion of the third auxiliary connecting electrode (ACEc).

[0249] As described below, the second electrodes (E2a, E2b, E2c) can each contact the second side portions of the first to third auxiliary connecting electrodes (ACEa, ACEb, ACEc) that are exposed without overlapping with the separator (SPR).

[0250] Hereinafter, the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) will be described in more detail, focusing on the first unit light-emitting area (UEA1) of FIG. 12. The following description regarding the connection relationship between the first to third light-emitting elements (LDa, LDb, LDc) and the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) can be equally applied to all unit light-emitting areas.

[0251] The first auxiliary connection pattern (ACPa) can be positioned between the auxiliary electrode (AUE) and the first auxiliary connection electrode (ACEa).

[0252] The first auxiliary connection electrode (ACEa) may be connected to the first auxiliary connection pattern (ACPa). For example, the first auxiliary connection electrode (ACEa) may be in contact with the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa). However, the present invention is not limited thereto, and the first auxiliary connection electrode (ACEa) may not be in contact with the first auxiliary connection pattern (ACPa) (for example, may not be in direct contact). For example, the first auxiliary connection electrode (ACEa) may be in contact with a capping layer that is in contact with the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa), and may be electrically connected to the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa) through the capping layer. The capping layer may include a conductive material. For example, the capping layer may be formed substantially simultaneously with the first electrode (E1) and may include the same material.

[0253] The second electrode (E2a) of the first light-emitting element (LDa) can be connected to the first auxiliary connection electrode (ACEa). Specifically, the second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the first auxiliary connection electrode (ACEa). The second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the second side of the first auxiliary connection electrode (ACEa) that is exposed without overlapping the separator (SPR). Accordingly, the first auxiliary connection electrode (ACEa) can electrically connect the first auxiliary connection pattern (ACPa) and the second electrode (E2a) of the first light-emitting element (LDa). As a result, the second electrode (E2a) of the first light-emitting element (LDa) can be electrically connected to the auxiliary electrode (AUE) through the first auxiliary connection electrode (ACEa) and the first auxiliary connection pattern (ACPa).

[0254] In one embodiment, the second electrode (E2a) of the first light-emitting element (LDa) can be in contact with the first auxiliary connection electrode (ACEa) at a position that does not overlap the first light-emitting area (EAa). Therefore, the second electrode (E2a) of the first light-emitting element (LDa) can be electrically connected to the auxiliary electrode (AUE) through the first auxiliary connection electrode (ACEa) and the first auxiliary connection pattern (ACPa) without reducing the light-emitting area of ​​the first light-emitting area (EAa).

[0255] The second auxiliary connection electrode (ACEb) may be connected to the second auxiliary connection pattern (ACPb). For example, the second auxiliary connection electrode (ACEb) may be in contact with the second light-emitting connection portion (CNb) of the second auxiliary connection pattern (ACPb).

[0256] The second electrode (E2b) of the second light-emitting element (LDb) can be connected to the second auxiliary connection electrode (ACEb). Specifically, the second electrode (E2b) of the second light-emitting element (LDb) can be in contact with the second auxiliary connection electrode (ACEb). The second electrode (E2b) of the second light-emitting element (LDb) can be in contact with the second side of the second auxiliary connection electrode (ACEb) that is exposed without overlapping the separator (SPR). Accordingly, the second auxiliary connection electrode (ACEb) can electrically connect the second auxiliary connection pattern (ACPb) and the second electrode (E2b) of the second light-emitting element (LDb). As a result, the second electrode (E2b) of the second light-emitting element (LDb) can be electrically connected to the auxiliary electrode (AUE) through the second auxiliary connection electrode (ACEb) and the second auxiliary connection pattern (ACPb).

[0257] In one embodiment, the second electrode (E2b) of the second light-emitting element (LDb) can be in contact with the second auxiliary connection electrode (ACEb) at a position that does not overlap the second light-emitting area (EAb). Therefore, the second electrode (E2b) of the second light-emitting element (LDb) can be electrically connected to the auxiliary electrode (AUE) through the second auxiliary connection electrode (ACEb) and the second auxiliary connection pattern (ACPb) without reducing the light-emitting area of ​​the second light-emitting area (EAb).

[0258] In one embodiment, as illustrated in FIG. 13, the first auxiliary connection electrode (ACEa) and the second auxiliary connection electrode (ACEb) may be spaced apart from each other below the separator (SPR).

[0259] The third auxiliary connecting electrode (ACEc) may be connected to the third auxiliary connecting pattern (ACPc). For example, the third auxiliary connecting electrode (ACEc) may be in contact with the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc).

[0260] The second electrode (E2c) of the third light-emitting element (LDc) can be connected to the third auxiliary connection electrode (ACEc). Specifically, the second electrode (E2c) of the third light-emitting element (LDc) can be in contact with the third auxiliary connection electrode (ACEc). The second electrode (E2c) of the third light-emitting element (LDc) can be in contact with the second side of the third auxiliary connection electrode (ACEc) that is exposed without overlapping the separator (SPR). Accordingly, the third auxiliary connection electrode (ACEc) can electrically connect the third auxiliary connection pattern (ACPc) and the second electrode (E2c) of the third light-emitting element (LDc). As a result, the second electrode (E2c) of the third light-emitting element (LDc) can be electrically connected to the auxiliary electrode (AUE) through the third auxiliary connection electrode (ACEc) and the third auxiliary connection pattern (ACPc).

[0261] In one embodiment, the second electrode (E2c) of the third light-emitting element (LDc) can be in contact with the third auxiliary connection electrode (ACEc) at a position that does not overlap with the third light-emitting area (EAc). Therefore, the second electrode (E2c) of the third light-emitting element (LDc) can be electrically connected to the auxiliary electrode (AUE) through the third auxiliary connection electrode (ACEc) and the third auxiliary connection pattern (ACPc) without reducing the light-emitting area of ​​the third light-emitting area (EAc).

[0262] According to the present invention, the display device (DD-2) may include auxiliary connection patterns (ACPa, ACPb, ACPc), auxiliary connection electrodes (ACEa, ACEb, ACEc), and a separator (SPR). Accordingly, the electrode layer (E2L) (e.g., cathode) may be easily electrically connected to the auxiliary electrode (AUE) through the auxiliary connection electrodes (ACEa, ACEb, ACEc) and the auxiliary connection patterns (ACPa, ACPb, ACPc). Accordingly, the electrode layer (E2L) may receive the second power voltage (ELVSS, see FIG. 2) from the auxiliary electrode (AUE), and a voltage drop phenomenon of the second power voltage provided to the electrode layer (E2L) may be improved. Since the auxiliary connection electrodes (ACEa, ACEb, ACEc) are separated from each other, current leakage between adjacent light-emitting elements (LDa, LDb, LDc) through the auxiliary connection electrodes (ACEa, ACEb, ACEc) can be further reduced compared to the display device (DD-1) of FIGS. 6 to 9. Accordingly, the display quality of the display device (DD-2) can be further improved.

[0263] FIG. 14 and FIG. 15 are schematic plan views showing some areas of a display device according to one embodiment of the present invention. FIG. 16 is a schematic plan view enlarged to show one of the unit light-emitting areas of FIG. 15. FIG. 17 is a schematic cross-sectional view taken along line III-III' of FIG. 16.

[0264] Specifically, in FIGS. 14 and 15, an area in which a total of four unit light-emitting areas (UEA1, UEA2) forming a matrix of two rows and two columns are arranged is schematically illustrated, and in FIG. 16, a first unit light-emitting area (UEA1) among the unit light-emitting areas (UEA1, UEA2) is schematically illustrated in an enlarged manner. FIGS. 14 to 17 may correspond to FIGS. 10 to 13, respectively.

[0265] For convenience of explanation, some of the configurations illustrated in FIG. 17 are omitted or emphasized in FIGS. 14 to 16. Specifically, FIG. 14 is a schematic plan view showing the first to third auxiliary connection patterns (ACPa, ACPb, ACPc) and the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc), and FIG. 15 is a schematic plan view showing a separator (SPR) further arranged on the first to third auxiliary connection electrodes (ACEa, ACEb, ACEc) of FIG. 14.

[0266] The display device (DD-3) according to one embodiment described with reference to FIGS. 14 to 17 may be substantially the same as the display device (DD-2) described with reference to FIGS. 10 to 13, except that the first to third light-emitting connectors (CNa, CNb, CNc) overlap the separator (SPR) on a plane. Therefore, any overlapping description will be omitted or simplified.

[0267] Referring to FIGS. 14 to 17, a display device (DD-3) according to one embodiment may include first to third pixel driving circuits (PCa, PCb, PCc), first to third light-emitting elements (LDa, LDb, LDc), first to third auxiliary connection patterns (ACPa, ACPb, ACPc), first to third auxiliary connection electrodes (ACEa, ACEb, ACEc), and a separator (SPR).

[0268] The first auxiliary connecting electrode (ACEa) may not overlap the first light-emitting area (EAa) on a plane. In one embodiment, the first auxiliary connecting electrode (ACEa) may surround at least a portion of the first light-emitting area (EAa) on a plane. For example, as illustrated in FIG. 14, the first auxiliary connecting electrode (ACEa) may have a closed ring shape that entirely surrounds the first light-emitting area (EAa) on a plane.

[0269] The first auxiliary connecting electrode (ACEa) may include a first ring portion surrounding the first light-emitting area (EAa) on a plane, and a first connecting portion extending from the first ring portion and connected to the first light-emitting connecting portion (CNa) of the first auxiliary connecting pattern (ACPa).

[0270] The first auxiliary connecting electrode (ACEa) may be connected to the first light-emitting connecting portion (CNa) of the first auxiliary connecting pattern (ACPa). As illustrated in FIG. 17, the first connecting portion of the first auxiliary connecting electrode (ACEa) may contact the first light-emitting connecting portion (CNa) of the first auxiliary connecting pattern (ACPa) through the first opening (OPa) to which the first-first sub-opening (SO1a) of the sixth insulating layer (IL6) exposing the first auxiliary connecting pattern (ACPa) and the first-second sub-opening (SO2a) of the pixel defining layer (PDL) are connected. The position of the first connecting portion of the first auxiliary connecting electrode (ACEa) and the position of the first light-emitting connecting portion (CNa) of the first auxiliary connecting pattern (ACPa) may correspond to the position of the first opening (OPa).

[0271] In one embodiment, each of the first connection portion of the first auxiliary connection electrode (ACEa) and the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa) may overlap with the separator (SPR) in a plane. That is, the first opening (OPa) may overlap with the separator (SPR) in a plane. In other words, the first-first sub-opening (SO1a) and the first-second sub-opening (SO2a) may overlap with the separator (SPR) in a plane. Each of the first connection portion of the first auxiliary connection electrode (ACEa) and the first light-emitting connection portion (CNa) of the first auxiliary connection pattern (ACPa) may be positioned below the separator (SPR). For example, each of the first connecting portion of the first auxiliary connecting electrode (ACEa) and the first light-emitting connecting portion (CNa) of the first auxiliary connecting pattern (ACPa) may be positioned outside the first open area (OA1) of the separator (SPR) on a plane.

[0272] The second auxiliary connecting electrode (ACEb) may not overlap the second light-emitting area (EAb) on a plane. In one embodiment, the second auxiliary connecting electrode (ACEb) may surround at least a portion of the second light-emitting area (EAb) on a plane. For example, as illustrated in FIG. 14, the second auxiliary connecting electrode (ACEb) may have a closed ring shape that entirely surrounds the second light-emitting area (EAb) on a plane.

[0273] The second auxiliary connecting electrode (ACEb) may include a second ring portion surrounding the second light-emitting area (EAb) on a plane, and a second connecting portion extending from the second ring portion and connected to the second light-emitting connecting portion (CNb) of the second auxiliary connecting pattern (ACPb).

[0274] The second auxiliary connecting electrode (ACEb) may be connected to the second light-emitting connecting portion (CNb) of the second auxiliary connecting pattern (ACPb). As illustrated in FIG. 17, the second connecting portion of the second auxiliary connecting electrode (ACEb) may contact the second light-emitting connecting portion (CNb) of the second auxiliary connecting pattern (ACPb) through a second opening (OPb) to which the second-first sub-opening (SO1b) of the sixth insulating layer (IL6) exposing the second auxiliary connecting pattern (ACPb) and the second-second sub-opening (SO2b) of the pixel defining layer (PDL) are connected. The position of the second connecting portion of the second auxiliary connecting electrode (ACEb) and the position of the second light-emitting connecting portion (CNb) of the second auxiliary connecting pattern (ACPb) may correspond to the position of the second opening (OPb).

[0275] In one embodiment, each of the second connection portion of the second auxiliary connection electrode (ACEb) and the second light-emitting connection portion (CNb) of the second auxiliary connection pattern (ACPb) may overlap the separator (SPR) on a plane. That is, the second opening (OPb) may overlap the separator (SPR) on a plane. In other words, the second-first sub-opening (SO1b) and the second-second sub-opening (SO2b) may overlap the separator (SPR) on a plane. Each of the second connection portion of the second auxiliary connection electrode (ACEb) and the second light-emitting connection portion (CNb) of the second auxiliary connection pattern (ACPb) may be positioned below the separator (SPR). For example, each of the second connecting portion of the second auxiliary connecting electrode (ACEb) and the second light-emitting connecting portion (CNb) of the second auxiliary connecting pattern (ACPb) may be positioned outside the second open area (OA2) of the separator (SPR) on a plane.

[0276] The third auxiliary connecting electrode (ACEc) may not overlap the third light-emitting area (EAc) on a plane. In one embodiment, the third auxiliary connecting electrode (ACEc) may surround at least a portion of the third light-emitting area (EAc) on a plane. For example, as illustrated in FIG. 14, the third auxiliary connecting electrode (ACEc) may have a closed ring shape that entirely surrounds the third light-emitting area (EAc) on a plane.

[0277] The third auxiliary connecting electrode (ACEc) may include a third ring portion surrounding the third light-emitting area (EAc) on a plane, and a third connecting portion extending from the third ring portion and connected to the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc).

[0278] The third auxiliary connecting electrode (ACEc) may be connected to the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc). As illustrated in FIG. 17, the third connecting portion of the third auxiliary connecting electrode (ACEc) may contact the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc) through a third opening (OPc) to which the 3-1 sub-opening (SO1c) of the sixth insulating layer (IL6) exposing the third auxiliary connecting pattern (ACPc) and the 3-2 sub-opening (SO2c) of the pixel defining layer (PDL) are connected. The position of the third connecting portion of the third auxiliary connecting electrode (ACEc) and the position of the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc) may correspond to the position of the third opening (OPc).

[0279] In one embodiment, each of the third connecting portion of the third auxiliary connecting electrode (ACEc) and the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc) may overlap the separator (SPR) in a plane. That is, the third opening (OPc) may overlap the separator (SPR) in a plane. In other words, the third-first sub-opening (SO1c) and the third-second sub-opening (SO2c) may overlap the separator (SPR) in a plane. Each of the third connecting portion of the third auxiliary connecting electrode (ACEc) and the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc) may be located below the separator (SPR). For example, each of the third connecting portion of the third auxiliary connecting electrode (ACEc) and the third light-emitting connecting portion (CNc) of the third auxiliary connecting pattern (ACPc) may be positioned outside the third open area (OA3) of the separator (SPR) on a plane.

[0280] According to the display device (DD-3) of FIGS. 14 to 17, the light-emitting connecting portions (CNa, CNb, CNc) can overlap with the separator (SPR) on a plane. For example, on a plane, the light-emitting connecting portions (CNa, CNb, CNc) may be located outside the open areas (OA1, OA2, OA3) and may not overlap with the light-emitting areas (EAa, EAb, EAc). Accordingly, the constraints on the design of the light-emitting areas (EAa, EAb, EAc) due to the light-emitting connecting portions (CNa, CNb, CNc) can be reduced. Accordingly, the degree of freedom in the design of the light-emitting areas (EAa, EAb, EAc) can be improved, and the light-emitting area (i.e., aperture ratio) of the light-emitting areas (EAa, EAb, EAc) can be further increased.

[0281] Fig. 18 is a schematic plan view showing a display device according to one embodiment of the present invention. Fig. 19 is a schematic cross-sectional view taken along line VV' of Fig. 18.

[0282] A display device (DD-4) according to an embodiment described with reference to FIGS. 18 and 19 may be substantially the same as the display device (DD-1) described with reference to FIGS. 6 to 9, except that an auxiliary electrode (e.g., an auxiliary electrode (AUE) of FIG. 9) and an auxiliary connection pattern (e.g., an auxiliary connection pattern (ACPa) of FIG. 9) are omitted and a voltage transmission electrode (VTE) electrically connecting a second power supply line (VSL2) and an auxiliary connection electrode (ACE) is further included. Therefore, any redundant description will be omitted or simplified.

[0283] Referring to FIG. 18, a display device (DD-4) according to one embodiment may be a device activated according to an electrical signal. For example, as illustrated in FIG. 18, the display device (DD-4) may be a small display device used in small electronic devices such as smartphones, mobile phones, smart watches, game consoles, cameras, or combinations thereof. However, the present invention is not limited thereto, and the display device (DD-4) may also be a medium- to large-sized display device used in medium- to large-sized electronic devices such as laptops, tablet PCs, televisions, computer monitors, vehicle monitors, and external billboards.

[0284] The display device (DD-4) may include a substrate (SUB), pixels (PX), a gate line (GL), a data line (DL), a data driver (DDV), a gate driver (GDV), a power line (PL), a first power supply line (VSL1), and a second power supply line (VSL2). The substrate (SUB), pixels (PX), the gate line (GL), the data line (DL), the data driver (DDV), the gate driver (GDV), the power line (PL), the first power supply line (VSL1), and the second power supply line (VSL2) may be substantially the same as the configurations described with reference to FIGS. 1A and 1B. Therefore, redundant descriptions are omitted.

[0285] Referring further to FIG. 19, the display device (DD-4) may include a substrate (SUB), a first lower conductive layer (BML1), a transistor (TR), first to sixth insulating layers (IL1, IL2, IL3, IL4, IL5, IL6), a pixel defining layer (PDL), a light emitting element (LD), a second power supply line (VSL2), an auxiliary connecting electrode (ACE), a voltage transmission electrode (VTE), a separator (SPR), a first dummy layer (DP1), a second dummy layer (DP2), and an encapsulation layer (ENC). Hereinafter, descriptions overlapping with those of the display device (DD-1) described with reference to FIG. 9 will be omitted or simplified.

[0286] A second power supply line (VSL2) may be arranged in the peripheral area (NDA). The second power supply line (VSL2) may be supplied with the second power voltage (ELVSS, see FIG. 2). For example, as illustrated in FIG. 18, the second power supply line (VSL2) may extend along at least a portion of the perimeter of the display area (DA).

[0287] In one embodiment, as illustrated in FIG. 19, the second power supply line (VSL2) may include a first layer (VSL2a) and a second layer (VSL2b). The first layer (VSL2a) and the second layer (VSL2b) may be disposed on different layers. The second layer (VSL2b) is disposed on the first layer (VSL2a), and an insulating layer may be interposed between the first layer (VSL2a) and the second layer (VSL2b). The second layer (VSL2b) may expose a portion of the first layer (VSL2a) and may contact the first layer (VSL2a) through a contact hole penetrating the insulating layer. Accordingly, the first layer (VSL2a) and the second layer (VSL2b) may be electrically connected to each other.

[0288] In one embodiment, as illustrated in FIG. 19, the first layer (VSL2a) may be disposed between the fourth insulating layer (IL4) and the fifth insulating layer (IL5), and the second layer (VSL2b) may be disposed between the fifth insulating layer (IL5) and the sixth insulating layer (IL6).

[0289] For example, the first layer (VSL2a) may be disposed on the same layer as the first contact electrode (SE) and the second contact electrode (DE). The first contact electrode (SE), the second contact electrode (DE), and the first layer (VSL2a) may be formed through the same process. That is, the first contact electrode (SE), the second contact electrode (DE), and the first layer (VSL2a) may include the same material and may be formed substantially simultaneously.

[0290] For example, the second layer (VSL2b) may be disposed on the same layer as the anode connection electrode (not shown) that electrically connects the second contact electrode (DE) of the transistor (TR) and the first electrode (E1) of the light emitting element (LD). The anode connection electrode and the second layer (VSL2a) may be formed through the same process. That is, the anode connection electrode and the second layer (VSL2a) may include the same material and be formed substantially simultaneously. However, the present invention is not limited thereto, and the number and arrangement positions of layers included in the second power supply line (VSL2) may vary depending on embodiments. For example, the first layer (VSL2a) may be omitted.

[0291] An auxiliary connecting electrode (ACE) may be arranged in the display area (DA). The auxiliary connecting electrode (ACE) may not overlap each of the light-emitting areas (EA) on a plane. The auxiliary connecting electrode (ACE) may be arranged between the light-emitting areas (EA) on a plane. In one embodiment, the auxiliary connecting electrode (ACE) may have a mesh structure that surrounds each of the light-emitting areas (EA) on a plane throughout the display area (DA).

[0292] A separator (SPR) may be disposed on the auxiliary connecting electrode (ACE). The separator (SPR) may not overlap each of the light-emitting areas (EA) on a plane. The separator (SPR) may be disposed between the light-emitting areas (EA) on a plane. In one embodiment, the separator (SPR) may have a mesh structure that surrounds each of the light-emitting areas (EA) on a plane throughout the display area (DA).

[0293] In one embodiment, the planar profile of the auxiliary connecting electrode (ACE) may correspond to the planar profile of the separator (SPR). In one embodiment, the width of the auxiliary connecting electrode (ACE) may be greater than the width of the separator (SPR). For example, the entire separator (SPR) may overlap with the auxiliary connecting electrode (ACE) in the plane. The separator (SPR) may overlap with the central portion of the auxiliary connecting electrode (ACE) in the width direction and may be exposed without overlapping with the side portions of the auxiliary connecting electrode (ACE) in the width direction. In the display area (DA), the second electrodes (E2a, E2b, E2c) may contact the side portions of the auxiliary connecting electrode (ACE) that are exposed without overlapping with the separator (SPR).

[0294] For example, the auxiliary connecting electrode (ACE), the separator (SPR), and the second electrodes (E2a, E2b, E2c) of FIG. 19 may have substantially the same planar shape as the auxiliary connecting electrode (ACE), the separator (SPR), and the second electrodes (E2a, E2b, E2c) described with reference to FIGS. 6 to 8.

[0295] The separator (SPR) can separate (or disconnect) the electrode layer (E2L) into second electrodes (E2a, E2b, E2c) and a voltage transmission electrode (VTE). Specifically, in the display area (DA), the separator (SPR) can separate (or disconnect) the electrode layer (E2L) into second electrodes (E2a, E2b, E2c) that are spaced apart from each other. At the boundary between the display area (DA) and the peripheral area (NDA), the separator (SPR) can separate (or disconnect) the electrode layer (E2L) into second electrodes (E2a, E2b, E2c) arranged in the display area (DA) and a voltage transmission electrode (VTE) arranged in the peripheral area (NDA). The second electrodes (E2a, E2b, E2c) and the voltage transmission electrode (VTE) can be spaced apart from each other on a plane.

[0296] A voltage transmitting electrode (VTE) may be disposed in a peripheral area (NDA). The voltage transmitting electrode (VTE) may be connected to each of an auxiliary connecting electrode (ACE) and a second power supply line (VSL). The voltage transmitting electrode (VTE) may electrically connect the auxiliary connecting electrode (ACE) and the second power supply line (VSL) to each other. Accordingly, the second power voltage may be transmitted to the second electrodes (E2a, E2b, E2c) of the light emitting element (LD) through the second power supply line (VSL), the voltage transmitting electrode (VTE), and the auxiliary connecting electrode (ACE).

[0297] In one embodiment, the voltage transmission electrode (VTE) may be disposed on the pixel defining layer (PDL). For example, the voltage transmission electrode (VTE) may be disposed on the same layer as the second electrodes (E2a, E2b, E2c) of the light emitting element (LD). The voltage transmission electrode (VTE) and the second electrodes (E2a, E2b, E2c) may be formed through the same process. That is, the voltage transmission electrode (VTE) and the second electrodes (E2a, E2b, E2c) include the same material and may be formed substantially simultaneously. However, the present invention is not limited thereto.

[0298] As illustrated in FIG. 18, a driving unit (e.g., a gate driving unit (GDV) and / or a light emitting driving unit) may be disposed between the second power supply line (VSL2) and the display area (DA). For example, circuit elements constituting the driving unit may be formed using various conductive layers positioned between the substrate (SUB) and the pixel defining layer (PDL). When the voltage transmission electrode (VTE) is formed in the same layer as the second electrodes (E2a, E2b, E2c) of the light emitting element (LD), the circuit elements of the driving unit may be positioned below the voltage transmission electrode (VTE). For example, the voltage transmission electrode (VTE) and the circuit elements of the driving unit may overlap in a plane. Therefore, the degree of freedom in the design of the driving unit may be improved, and the peripheral area (NDA) of the display device (DD-4) may be further reduced.

[0299] A voltage transfer electrode (VTE) may include a power line connection (VCa) and an auxiliary connection electrode connection (VCb).

[0300] The power line connection portion (VCa) may be a portion of the voltage transfer electrode (VTE) that is connected to the second power supply line (VSL2). For example, the power line connection portion (VCa) may be connected to the second layer (VSL2b) of the second power supply line (VSL2). As illustrated in FIG. 19, the power line connection portion (VCa) may contact the second layer (VSL2b) through an opening (OP) to which a first sub-opening (SO1) of the sixth insulating layer (IL6) exposing the second layer (VSL2b) and a second sub-opening (SO2) of the pixel defining layer (PDL) are connected.

[0301] The auxiliary connecting electrode connector (VCb) may be a portion of the voltage transmitting electrode (VTE) that is connected to the auxiliary connecting electrode (ACE). Specifically, the auxiliary connecting electrode connector (VCb) may be connected to an edge portion (ACE-e) of the auxiliary connecting electrode located at the boundary between the display area (DA) and the peripheral area (NDA).

[0302] As illustrated in FIG. 19, the edge portion (ACE-e) of the auxiliary connection electrode (ACE) may be located at the boundary between the display area (DA) and the peripheral area (NDA). The edge portion (ACE-e) of the auxiliary connection electrode (ACE) may be a portion (e.g., an outermost edge portion in a plane) of the auxiliary connection electrode (ACE) having a mesh structure in the entire display area (DA) that is closest to the peripheral area (NDA). For example, a portion of the edge portion (ACE-e) of the auxiliary connection electrode (ACE) may be located in the display area (DA), and another portion may be located in the peripheral area (NDA).

[0303] The edge portion (SPR-e) (or outer portion) of the separator may be located at the boundary between the display area (DA) and the peripheral area (NDA). The edge portion (SPR-e) of the separator may be a portion (e.g., the outermost edge portion in a plan view) of the separator (SPR) having a mesh structure in the entire display area (DA) that is closest to the peripheral area (NDA). For example, a portion of the edge portion (SPR-e) of the separator may be located in the display area (DA), and another portion may be located in the peripheral area (NDA).

[0304] The edge portion (SPR-e) of the separator (SPR) may overlap the edge portion (ACE-e) of the auxiliary connecting electrode (ACE) in a plane. The edge portion (SPR-e) of the separator (SPR) may be arranged on the edge portion (ACE-e) of the auxiliary connecting electrode (ACE). The width of the edge portion (ACE-e) of the auxiliary connecting electrode (ACE) may be greater than the width of the edge portion (SPR-e) of the separator (SPR).

[0305] The edge portion (ACE-e) of the auxiliary connecting electrode (ACE) may include a first side portion (e.g., the right side in FIG. 19) located in the display area (DA) in the width direction (e.g., the second direction (DR2) in FIG. 19), a second side portion (e.g., the left side in FIG. 19) located in the peripheral area (NDA), and a central portion between the first side portion and the second side portion.

[0306] The edge portion (SPR-e) of the separator (SPR) overlaps with the central portion of the edge portion (ACE-e) of the auxiliary connecting electrode (ACE), and can be exposed without overlapping with each of the first side portion and the second side portion of the edge portion (ACE-e) of the auxiliary connecting electrode (ACE).

[0307] The first side of the edge portion (ACE-e) of the auxiliary connecting electrode (ACE) that is exposed without overlapping with the edge portion (SPR-e) of the separator (SPR) can be contacted by the second electrodes (E2a, E2b, E2c) of the light emitting element (LD). The second side of the edge portion (ACE-e) of the auxiliary connecting electrode (ACE) that is exposed without overlapping with the edge portion (SPR-e) of the separator (SPR) can be contacted by the auxiliary connecting electrode connection portion (VCb) of the voltage transmitting electrode (VTE).

[0308] In one embodiment, as illustrated in FIG. 19, the side surface of the edge portion (SPR-e) of the separator (SPR) may have a plurality of reverse tapered slopes. That is, the edge portion (SPR-e) of the separator (SPR) may have a double reverse tapered structure.

[0309] A shadow region in which it is difficult to deposit an electrode layer (E2L) may exist around an edge portion (SPR-e) of a separator (SPR) having a reverse tapered slope. In the shadow region and / or around the shadow region, the electrode layer (E2L) may have a structure separated (or disconnected) by the edge portion (SPR-e) of the separator (SPR). For example, the electrode layer (E2L) may be separated (or disconnected) by the edge portion (SPR-e) of the separator (SPR) from second electrodes (E2a, E2b, E2c) of a light-emitting element (LD) disposed in a display area (DA) and a voltage transmission electrode (VTE) disposed in a peripheral area (NDA).

[0310] In the display area (DA), the second electrodes (E2a, E2b, E2c) can be in contact with the first side of the edge portion (ACEa) of the auxiliary connection electrode (ACE) at a position adjacent to or overlapping the edge portion (SPR-e) of the separator (SPR). For example, in the display area (DA), the second electrodes (E2a, E2b, E2c) can be in contact with the first side of the edge portion (ACEa) of the auxiliary connection electrode (ACE) at a region overlapping in a plane with an upper portion of the edge portion (SPR-e) of the separator (SPR).

[0311] In the peripheral region (NDA), the auxiliary connecting electrode connection portion (VCb) can contact the second side of the edge portion (ACEa) of the auxiliary connecting electrode (ACE) at a position adjacent to or overlapping the edge portion (SPR-e) of the separator (SPR). For example, in the peripheral region (NDA), the auxiliary connecting electrode connection portion (VCb) can contact the second side of the edge portion (ACEa) of the auxiliary connecting electrode (ACE) at a region that overlaps in a plane with an upper portion of the edge portion (SPR-e) of the separator (SPR).

[0312] For example, when the deposition angle of the deposition process forming the electrode layer (E2L) is greater than the deposition angle of the deposition process forming the intermediate layer (ML), the electrode layer (E2L) can be formed to contact the auxiliary connection electrode (ACE) while overlapping the side of the disconnected intermediate layer (ML). Specifically, the second electrode layer (E2L) can be formed to contact the first side of the edge portion (ACEa) of the auxiliary connection electrode (ACE) while overlapping the side of the disconnected intermediate layer (ML), and the voltage transmission electrode (VTE) can be formed to contact the second side of the edge portion (ACEa) of the auxiliary connection electrode (ACE) while overlapping the side of the disconnected intermediate layer (ML). As a result, the second electrodes (E2a, E2b, E2c) can be electrically connected to the second power supply line (VSL2) through the edge portion (ACEa) of the auxiliary connection electrode (ACE) and the voltage transmission electrode (VTE). Accordingly, the second electrodes (E2a, E2b, E2c) can be provided with the second power voltage (ELVSS, see FIG. 2). The auxiliary connection electrode (ACE) has a mesh structure throughout the display area (DA), and the second electrodes (E2a, E2b, E2c) of all light-emitting elements (LD) within the display area (DA) can be in contact with the auxiliary connection electrode (ACE). Therefore, all the second electrodes (E2a, E2b, E2c) within the display area (DA) can be provided with the second power voltage through the auxiliary connection electrode (ACE).

[0313] According to the display device (DD-4) of FIGS. 18 and 19, the second electrodes (E2a, E2b, E2c) of the light emitting element (LD) can be easily electrically connected to the second power supply line (VSL2) arranged in the peripheral area (NDA) through the auxiliary connection electrode (ACE) and the voltage transmission electrode (VTE). That is, other electrodes and / or wires (e.g., the auxiliary electrode (AUE) and the second lower conductive layer (BML2) of FIG. 9) for providing the second power voltage to the second electrodes (E2a, E2b, E2c) (e.g., the cathode) may not be arranged in the display area (DA). As a result, the degree of freedom in designing the display area (DA) and the light emitting areas (EA) included therein can be improved, and the light emitting area (i.e., the aperture ratio) of the light emitting areas (EA) can be further increased.

[0314] FIG. 20 is a schematic block diagram showing an electronic device according to one embodiment of the present invention.

[0315] Referring to FIG. 20, in one embodiment, an electronic device (900) may include a processor (910), a memory device (920), a storage device (930), an input / output device (940), a power supply (950), and a display device (960). In this case, the display device (960) may correspond to any one of the display devices (DD, DD-1, DD-2, DD-3, DD-4) described above. The electronic device (900) may further include several ports capable of communicating with a video card, a sound card, a memory card, a USB device, and the like.

[0316] The processor (910) may perform specific calculations or tasks. In one embodiment, the processor (910) may be a microprocessor, a central processing unit (CPU), an application processor (AP), etc. The processor (910) may be electrically connected to other components via an address bus, a control bus, a data bus, etc. In one embodiment, the processor (910) may also be electrically connected to an expansion bus, such as a peripheral component interconnect (PCI) bus.

[0317] The memory device (920) can store data necessary for the operation of the electronic device (900). For example, the memory device (920) may include a non-volatile memory device such as an erasable programmable read-only memory (EPROM) device, an electrically erasable programmable read-only memory (EEPROM) device, a flash memory device, a phase change random access memory (PRAM) device, a resistance random access memory (RRAM) device, a nano floating gate memory (NFGM) device, a polymer random access memory (PoRAM) device, a magnetic random access memory (MRAM) device, a ferroelectric random access memory (FRAM) device, and / or a volatile memory device such as a dynamic random access memory (DRAM) device, a static random access memory (SRAM) device, a mobile DRAM device, and the like.

[0318] The storage device (930) may include a solid state drive (SSD), a hard disk drive (HDD), a CD-ROM, etc. The input / output device (940) may include an input means such as a keyboard, a keypad, a touch pad, a touch screen, a mouse, etc., and an output means such as a speaker, a printer, etc.

[0319] A power supply (950) may supply power necessary for the operation of the electronic device (900). A display device (960) may be electrically connected to other components via buses or other communication links. In one embodiment, the display device (960) may be included in an input / output device (940).

[0320] Fig. 21 is a schematic drawing showing an example of the electronic device of Fig. 20 being implemented as a smartphone. Fig. 22 is a schematic exploded plan view of the electronic device of Fig. 21.

[0321] Referring to FIG. 21, in one embodiment, the electronic device (900) may be implemented as a smart phone. However, the electronic device (900) is not limited thereto, and for example, the electronic device (900) may be implemented as a television, a mobile phone, a video phone, a smart pad, a smart watch, a tablet PC, a vehicle navigation system, a computer monitor, a laptop, a head mounted display (HMD), a kiosk, etc. Hereinafter, with reference to FIGS. 21 and 22, an embodiment in which the electronic device (900) is implemented as a smart phone will be described in more detail.

[0322] Referring to FIGS. 21 and 22, in one embodiment, an electronic device (900) may include a window (WU), a display device (960), and a housing (HM). The window (WU) and the housing (HM) may be combined to define the exterior appearance of the electronic device (900).

[0323] A display device (960) can display an image. The display device (960) can include a display area (DA) for displaying an image and a peripheral area (NDA) located around the display area (DA). A plurality of pixels (PX) for generating the image can be arranged in the display area (DA). A driving unit (e.g., a data driving unit (DDV), etc.) for driving the pixels (PX) can be arranged in the peripheral area (NDA). The display device (960) can correspond to any one of the above-described display devices (DD, DD-1, DD-2, DD-3, DD-4).

[0324] A window (WU) may define the front surface of an electronic device (900). The window (WU) may be light-transmitting. The window (WU) may be light-transmitting. For example, the window (WU) may include a resin film such as polyimide or ultra-thin glass (UTG).

[0325] The housing (HM) can be coupled with a window (WU). The housing (HM) can be coupled with the window (WU) to provide a predetermined internal space. The display device (960) can be accommodated in the internal space provided between the housing (HM) and the window (WU). Various components, such as an optical film, a cushion layer, a heat-generating layer, a processor, a memory device, a storage device, an input / output device, and a power supply, can be further accommodated in the internal space. The housing (HM) can include a material having relatively high rigidity. The housing (HM) can stably protect the components accommodated in the internal space from external impact.

[0326] The present invention can be applied to various display devices. For example, the present invention can be applied to various display devices such as display devices for vehicles, ships, and aircraft, portable communication devices, display devices for exhibition or information transmission, and medical display devices.

[0327] Although the present invention has been described above with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. A substrate including a display area and a peripheral area arranged around the display area; A power supply line arranged in the above peripheral area and supplying a low power voltage; A plurality of first electrodes arranged in the above display area and provided with a high power voltage; A pixel defining film disposed on the first electrodes and defining light-emitting areas by exposing a portion of each of the first electrodes; An auxiliary connecting electrode disposed on the pixel definition film and electrically connected to the power supply line; An electrode layer disposed on the first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and to which the low power voltage is provided; and A display device comprising a separator disposed on the auxiliary connecting electrode, overlapping a portion of the auxiliary connecting electrode, and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

2. In paragraph 1, An auxiliary electrode disposed in the display area and electrically connected to the power supply line; and A display device further comprising an auxiliary connection pattern disposed between the auxiliary electrode and the auxiliary connection electrode, the auxiliary electrode connection portion being connected to the auxiliary electrode, and a light-emitting connection portion being connected to the auxiliary connection electrode.

3. A display device in the second paragraph, wherein, on a plane, the light-emitting connection part is disposed between the light-emitting area and the separator.

4. A display device in the second paragraph, wherein, on a plane, the light-emitting connection part overlaps the separator.

5. In the first paragraph, the pixel defining film defines first to third light-emitting areas that emit light of different colors, A display device, wherein the second electrodes spaced apart from each other by the separator overlap the first to third light-emitting regions, respectively.

6. A display device in accordance with claim 5, wherein the separator has a mesh structure surrounding each of the second electrodes on a plane.

7. A display device in accordance with claim 5, wherein the auxiliary connecting electrode has a mesh structure surrounding each of the first to third light-emitting regions on a plane.

8. In the 7th paragraph, the display device, wherein the planar profile of the auxiliary connecting electrode corresponds to the planar profile of the separator.

9. In the 8th paragraph, a display device in which the width of the auxiliary connecting electrode is larger than the width of the separator on a plane.

10. In the 9th paragraph, the separator overlaps the central portion in the width direction of the auxiliary connecting electrode and exposes both sides in the width direction of the auxiliary connecting electrode, A display device in which the second electrodes are in contact with the two sides of the auxiliary connecting electrode exposed by the separator in the display area.

11. In paragraph 7, A display device further comprising a voltage transmitting electrode disposed on the power supply line and including a power line connecting portion connected to the power supply line and an auxiliary connecting electrode connecting portion connected to the auxiliary connecting electrode.

12. In the 11th paragraph, the voltage transmission electrode is arranged in the same layer as the second electrodes, A display device, wherein at the boundary between the display area and the peripheral area, the separator separates the electrode layer into second electrodes arranged in the display area and the voltage transmission electrodes arranged in the peripheral area.

13. In the 11th paragraph, the edge of the separator is placed at the boundary between the display area and the peripheral area, The edge portion of the auxiliary connecting electrode is arranged at the boundary between the display area and the peripheral area, and includes a first side portion arranged in the display area in the width direction, a second side portion arranged in the peripheral area, and a central portion arranged between the first side portion and the second side portion, The edge portion of the above separator overlaps the central portion of the above auxiliary connecting electrode, The above separator exposes each of the first side and the second side of the auxiliary connecting electrode, A display device in which the auxiliary connecting electrode connection portion of the voltage transmitting electrode is in contact with the second side of the auxiliary connecting electrode exposed by the edge portion of the separator in the peripheral area.

14. In the 13th paragraph, a display device in which the second electrodes are in contact with the first side of the auxiliary connecting electrode exposed by the edge portion of the separator in the display area.

15. A display device according to claim 5, wherein the auxiliary connecting electrode includes first to third auxiliary connecting electrodes each surrounding the first to third light-emitting regions on a plane.

16. A display device according to claim 15, wherein the first to third auxiliary connection electrodes are spaced apart from each other on a plane.

17. A display device according to claim 15, wherein each of the first to third auxiliary connecting electrodes has a closed ring shape on a plane.

18. In the 15th paragraph, the first auxiliary connecting electrode includes a first side portion that is relatively far from the first light-emitting region in the width direction and a second side portion that is relatively close to the first light-emitting region, The separator overlaps the first side of the first auxiliary connecting electrode and exposes the second side of the first auxiliary connecting electrode, A display device, wherein, in the display area, the second side of the first auxiliary connecting electrode exposed by the separator is in contact with one of the second electrodes that overlaps the first light-emitting area.

19. A substrate including a display area and a peripheral area disposed around the display area; A power supply line disposed in the above peripheral area and supplied with a low power voltage; An auxiliary electrode disposed in the above display area and electrically connected to the power supply line; An auxiliary connecting pattern disposed on the auxiliary electrode, electrically connected to the auxiliary electrode, and including a first conductive layer and a second conductive layer sequentially laminated, wherein the second conductive layer has a tip portion defined by a portion protruding compared to the first conductive layer; A plurality of first electrodes arranged in the above display area and provided with a high power voltage; A pixel defining film disposed on the auxiliary connection pattern and the first electrodes, and exposing a portion of each of the first electrodes to define light-emitting areas; An electrode layer disposed on the auxiliary connection pattern and the first electrodes, electrically connected to the auxiliary connection pattern, and to which the low power voltage is provided; and A display device comprising a separator disposed on the pixel defining film and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

20. Windows; a housing coupled with the above window to provide a predetermined internal space; and is accommodated in the internal space provided between the housing and the window, A substrate comprising a display area and a peripheral area disposed around the display area; A power supply line disposed in the above peripheral area and supplied with a low power voltage; A plurality of first electrodes arranged in the above display area and provided with a high power voltage; A pixel defining film disposed on the first electrodes and defining light-emitting areas by exposing a portion of each of the first electrodes; An auxiliary connecting electrode disposed on the pixel definition film and electrically connected to the power supply line; An electrode layer disposed on the first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and to which the low power voltage is provided; and An electronic device comprising a display device including a separator disposed on the auxiliary connecting electrode, overlapping a portion of the auxiliary connecting electrode, and separating the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

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