Display device and electronic device including the same

Abstract

The display device may include: a substrate including a display area and a peripheral area; a power line disposed in the peripheral region and supplying 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 an emission region; an auxiliary connection electrode disposed on the pixel defining layer and connected to a power line; an electrode layer disposed on the first electrode and the auxiliary connection electrode, connected to the auxiliary connection electrode, and supplied with a 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.

Description

Technical Field

[0001] The embodiments relate to display devices that provide visual information and electronic devices that include display devices. Background Technology

[0002] With the development of information technology, the importance of display devices, as the connection medium between users and information, has become increasingly prominent. A display device includes a light-emitting element and a pixel driving circuit for driving the light-emitting element. The light-emitting element is driven by the pixel driving circuit to emit light. To improve the reliability of display devices, research is underway on the connection between the light-emitting element and the pixel driving circuit. Summary of the Invention Technical Purpose

[0003] The 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 a display device.

[0005] However, the purpose of this invention is not limited to this purpose, and it can be extended in various ways without departing from the spirit and scope of the invention. Technical solution

[0006] To achieve the objectives of the present invention described above, a display device according to an embodiment may include: a substrate including a display area and a peripheral area disposed around the display area; a power 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 plurality of first electrodes and exposing a portion of each of the plurality of first electrodes to define an emission area; an auxiliary connection electrode disposed on the pixel defining layer and electrically connected to the power line; an electrode layer disposed on the plurality of first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with a 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 in the display area into a plurality of second electrodes spaced apart from each other.

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

[0008] In an embodiment, in a plan view, the light-emitting connection portion can be disposed between the emitting area and the separator.

[0009] In an embodiment, in a plan view, the light-emitting connection portion may overlap with the separator.

[0010] In one embodiment, the pixel defining layer may define a first emitting region, a second emitting region, and a third emitting region that emit light of different colors. A plurality of second electrodes, separated from each other by separators, may overlap with the first, second, and third emitting regions, respectively.

[0011] In an embodiment, in a plan view, the separator may have a mesh structure surrounding each of the plurality of second electrodes.

[0012] In an embodiment, in a plan view, the auxiliary connection electrode may have a mesh structure surrounding each of the first, second, and third emission regions.

[0013] In an embodiment, in a plan view, the outline of the auxiliary connecting electrode may correspond to the outline of the separator.

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

[0015] In one embodiment, the separator may overlap with the central portion of the auxiliary connection electrode in the width direction and may expose two sides of the auxiliary connection electrode in the width direction. In the display area, a plurality of second electrodes may contact the two sides of the auxiliary connection electrode exposed by the separator.

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

[0017] In this embodiment, the voltage transmission electrode and the plurality of second electrodes can be disposed in the same layer. At the boundary between the display area and the peripheral area, a separator can separate the electrode layer into the plurality of second electrodes disposed in the display area and the voltage transmission electrode disposed in the peripheral area.

[0018] In one embodiment, the edge portion of the separator may be located at the boundary between the display area and the peripheral area. The edge portion of the auxiliary connection electrode may also be located at the boundary between the display area and the peripheral area, and may include a first side portion disposed in the display area in the width direction, a second side portion disposed in the peripheral area in the width direction, and a central portion disposed between the first and second side portions. The separator may overlap with the central portion of the auxiliary connection electrode, and the edge portion of the separator may expose each of the first and second side portions 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 through the edge portion of the separator.

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

[0020] In an embodiment, the auxiliary connection electrode may include a first auxiliary connection electrode, a second auxiliary connection electrode, and a third auxiliary connection electrode respectively surrounding the first emission region, the second emission region, and the third emission region in a plan view.

[0021] In an embodiment, in a plan view, the first auxiliary connection electrode, the second auxiliary connection electrode, and the third auxiliary connection electrode may be spaced apart from each other.

[0022] In an embodiment, in a plan view, each of the first auxiliary connection electrode, the second auxiliary connection electrode, and the third auxiliary connection electrode may have a closed-loop shape.

[0023] In one embodiment, the first auxiliary connection electrode may include a first side portion away from the first emission region in the width direction and a second side portion close to the first emission region in the width direction. A separator may overlap with the first side portion of the first auxiliary connection electrode and may expose the second side portion of the first auxiliary connection electrode. In the display area, one of the plurality of second electrodes that overlaps with the first emission region may contact the second side portion of the first auxiliary connection electrode exposed by the separator.

[0024] To achieve the objectives of the present invention described above, a display device according to an embodiment may include: a substrate including a display area and a peripheral area disposed around the display area; a power 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 line; an auxiliary connection pattern disposed on the auxiliary electrode and electrically connected to the auxiliary electrode, including a first conductive layer and a second conductive layer stacked sequentially on each other, and having a tip portion defined by a portion of the second conductive layer protruding from 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 connection pattern and the plurality of first electrodes, and exposing a portion of each of the plurality of first electrodes to define an emission area; an electrode layer disposed on the auxiliary connection pattern and the plurality of first electrodes, electrically connected to the auxiliary connection pattern and supplied with a low power voltage; and a separator disposed on the pixel defining layer and in the display area separating the electrode layer into a plurality of second electrodes spaced apart from each other.

[0025] To achieve another objective of the present invention described above, an electronic device according to an embodiment may include: a window; a housing, combined with the window to provide an internal space; and a display device, housed 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 disposed around the display area; a power 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 plurality of first electrodes and exposing a portion of each of the plurality of first electrodes to define an emission area; an auxiliary connection electrode disposed on the pixel defining layer and electrically connected to the power line; an electrode layer disposed on the plurality of first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with a 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. Beneficial effects

[0026] According to embodiments of this disclosure, leakage current (lateral leakage) between adjacent light-emitting elements can be reduced. Voltage drop (IR drop) due to the low power voltage supplied to the cathode included in the light-emitting element can be reduced. Accordingly, the display quality of the display device can be improved.

[0027] However, the effects of the present invention are not limited to those described above, and can be extended in various ways without departing from the spirit and scope of the present invention. Attached Figure Description

[0028] Figure 1a This is a schematic plan view illustrating a display device according to an embodiment.

[0029] Figure 1b This is a schematic plan view illustrating a display device according to an embodiment.

[0030] Figure 2 The illustration includes, according to the embodiment Figure 1a and Figure 1b A schematic diagram of the equivalent circuit of the pixel circuit structure in a display device.

[0031] Figure 3 The illustration is based on an embodiment. Figure 1a and Figure 1b A schematic plan view of a portion of the display device.

[0032] Figure 4 The illustration is based on an embodiment. Figure 3 An enlarged schematic diagram of one of the unit emission regions.

[0033] Figure 5 It is according to the embodiment along Figure 4A schematic cross-sectional view taken from line I-I'.

[0034] Figure 6 and Figure 7 This is a schematic plan view illustrating a portion of a display device according to an embodiment.

[0035] Figure 8 The illustration is based on an embodiment. Figure 7 An enlarged schematic diagram of one of the unit emission regions.

[0036] Figure 9 It is according to the embodiment along Figure 8 A schematic cross-sectional view taken from line II-II'.

[0037] Figure 10 and Figure 11 This is a schematic plan view illustrating a portion of a display device according to an embodiment.

[0038] Figure 12 The illustration is based on an embodiment. Figure 11 An enlarged schematic diagram of one of the unit emission regions.

[0039] Figure 13 It is according to the embodiment along Figure 12 A schematic cross-sectional view taken from line III-III'.

[0040] Figure 14 and Figure 15 This is a schematic plan view illustrating a portion of a display device according to an embodiment.

[0041] Figure 16 The illustration is based on an embodiment. Figure 15 An enlarged schematic diagram of one of the unit emission regions.

[0042] Figure 17 It is according to the embodiment along Figure 16 A schematic cross-sectional view taken from line IV-IV'.

[0043] Figure 18 This is a schematic plan view illustrating a display device according to an embodiment.

[0044] Figure 19 It is according to the embodiment along Figure 18 A schematic cross-sectional view of the line V-V'.

[0045] Figure 20 This is a schematic block diagram illustrating an electronic device according to an embodiment.

[0046] Figure 21 It is shown in the diagram. Figure 20 A schematic diagram illustrating an example of an electronic device implemented as a smartphone.

[0047] Figure 22 yes Figure 21 An exploded schematic plan view of an electronic device. Detailed Implementation

[0048] Various exemplary embodiments will be described more fully below with reference to the accompanying drawings, which illustrate some exemplary embodiments. However, the inventive concept can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. In the drawings, the dimensions and relative dimensions of layers and regions may be exaggerated for clarity.

[0049] Various modifications and forms may be made in this disclosure, and specific embodiments will be illustrated in the accompanying drawings and described in detail in the text. However, this is not intended to limit this disclosure to the specific forms disclosed, and it will be understood that all variations, equivalents, or substitutions falling within the spirit and scope of this disclosure should be included.

[0050] It will be understood that although the terms “first,” “second,” “third,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Thus, the first element discussed below may be referred to as the second element without departing from the teachings of the inventive concept. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0051] It will be understood that when an element is referred to as “connected” or “linked” to another element, it may be directly connected to or directly linked to that other element, or there may be an intermediary element. Conversely, when an element is referred to as “directly connected” or “directly linked” to another element, there is no intermediary element. Other terms used to describe the relationship between elements (e.g., “between” and “directly between”, “adjacent” and “directly adjacent”, etc.) should be interpreted in a similar manner.

[0052] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the inventive concept. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. It will be further understood that, when used in this specification, the term “comprising” indicates the presence of the stated features, integrals, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0053] Furthermore, relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship between one element and another illustrated in the figures. It will be understood that, in addition to the orientations depicted in the figures, relative terms are intended to encompass different orientations of the device. For example, if a device in one of the figures is flipped, an element described as being “down” to other elements will be oriented “up” to other elements. Thus, depending on the specific orientation of the figure, the term “down” can encompass both “down” and “up” orientations. Similarly, if a device in one of the figures is flipped, an element described as being “below” or “under” other elements will be oriented “above” to other elements. Thus, the terms “below” or “under” can encompass both “up” and “down” orientations.

[0054] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concept pertains. It will be further understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0055] In the following description, embodiments will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same parts in the drawings, and redundant descriptions of the same parts will be omitted.

[0056] Figure 1a This is a schematic plan view illustrating a display device according to an embodiment. Figure 1b This is a schematic plan view illustrating a display device according to an embodiment.

[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. Each of the display device and various components or layers may have a thickness extending upward in 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] refer to Figure 1a and Figure 1b A display device DD (or DDa) can be a device activated by an electrical signal. For example, a display device DD can be a small display device used in small electronic devices such as smartphones, mobile phones, smartwatches, game consoles, or cameras. For example, a display device DDa can be a medium to large display device used in medium to large electronic devices such as laptops, tablet PCs, televisions, computer monitors, vehicle monitors, or external billboards. Figure 1a The illustration shows a display device DD as an embodiment of a small display device, and Figure 1b The illustration shows a display device DDa as an example of a medium-to-large-sized display device.

[0059] A display device DD (or DDa) may include a display area DA and a peripheral area NDA. The display area DA may be an area that displays an image by generating light or 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, in a plan view, the peripheral area NDA may surround at least a portion of the display area DA. In embodiments, the peripheral area NDA may be an area where no image is displayed. However, this disclosure is not limited to this, and an image may be displayed in at least a portion of the peripheral area NDA. For example, a light-emitting element may be disposed in at least a portion of the peripheral area NDA.

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

[0061] The substrate SUB can serve as the substrate of a display device DD (or DDa). In embodiments, examples of materials that can be used as the substrate SUB include glass, quartz, silicon, or polymers. These can be used individually or in combination. The substrate SUB can have a single-layer structure or a multi-layer structure in which multiple layers of different materials are stacked on top of each other.

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

[0063] Each of the gate lines GL and each of the data lines DL can intersect each other. For example, each of the gate lines GL can extend substantially in a first direction DR1, and the gate lines GL can be positioned in a second direction DR2. Each of the data lines DL can extend substantially in the second direction DR2, and the data lines DL can be positioned in the first direction DR1. Each of the power lines PL can extend substantially in the second direction DR2, and the power lines PL can be positioned in the first direction DR1. However, this disclosure is not limited thereto.

[0064] The data driver DDV can be located in the peripheral area NDA or on the substrate SUB. The data driver DDV generates a data voltage. The data driver DDV outputs the data voltage to the data line DL. The data voltage can then be applied to the pixel PX via the data line DL.

[0065] In one embodiment, the data driver DDV may be mounted on the substrate SUB. However, this disclosure is not limited thereto, and the data driver DDV may be disposed on a flexible film attached to the substrate SUB in a chip-on-film (“COF”) manner.

[0066] In an embodiment, Figure 1b The display device DDA may include multiple data drivers DDV. For example, the data drivers DDV may be disposed on the side of the display area DA in the second direction DR2. For example, the data drivers DDV may be disposed on the long side of the display device DDA. However, this disclosure is not limited thereto, and the data drivers DDV may be disposed on both sides of the display area DA in the second direction DR2.

[0067] A gate driver (GDV) can be disposed in the peripheral region NDA, on the substrate SUB. The gate driver (GDV) can generate a gate signal. The gate driver (GDV) can output the gate signal to the gate line GL. The gate signal can be applied to the pixel PX through the gate line GL. In an embodiment, the gate driver (GDV) can be disposed on two sides of the display region DA in the first direction DR1. However, this disclosure is not limited thereto.

[0068] Figure 1a and Figure 1b The number or arrangement of data drivers (DDVs) and gate drivers (GDVs) shown in the diagram are merely examples, and this disclosure is not limited thereto.

[0069] In this embodiment, the transmitter driver that generates the transmitter control signal may be further disposed in the peripheral region NDA. The transmitter control signal can be applied to pixel PX via the transmitter control line.

[0070] The first power line VSL1 can be located in the peripheral area NDA. The first power line VSL1 can deliver a first power voltage ELVDD (see [link to power line]) with a high voltage level. Figure 2 The first power voltage is supplied to the pixel PX. This first power voltage can be supplied to the pixel driving circuit via the power line PL. This first power voltage can be referred to as the high power voltage.

[0071] The second power supply line VSL2 can be located in the peripheral area NDA. The second power supply line VSL2 can supply a second power voltage ELVSS with a low voltage level (see...). Figure 2 The second electrical voltage can be supplied to the cathode of the light-emitting element (e.g., ...). Figure 5 The second electrode (E2a). The second electrical voltage can be referred to as the low electrical voltage.

[0072] Figure 1a and Figure 1b The illustration shows a first power line VSL1 extending to correspond to one side of the display area DA, and a second power line VSL2 extending to correspond to the remaining three sides of the display area DA. However, this disclosure is not limited thereto, and the shape or arrangement of the first power line VSL1 and the second power line VSL2 can be varied according to embodiments of this disclosure.

[0073] although Figure 1a The illustration shows the display device DD in a plan view having a generally rectangular planar shape, the generally rectangular planar shape having a short side extending in a first direction DR1 and a long side extending in a second direction DR2, but this disclosure is not limited thereto. Although Figure 1b The illustration shows a display device DDa with a generally rectangular planar shape in a plan view, the generally rectangular planar shape having a long side extending in a first direction DR1 and a short side extending in a second direction DR2, but the present disclosure is not limited thereto. For example, according to embodiments of the present disclosure, the planar shape of each of the display devices DD and DDa can be varied.

[0074] The following description, together with the accompanying drawings, can be applied in essentially the same way. Figure 1a Display device DD and Figure 1b The display device is DDa. Therefore, for ease of description, both display device DD and DDa will be referred to as display device DD below.

[0075] Figure 2 The illustration includes, according to the embodiment Figure 1a and Figure 1b A schematic diagram of the equivalent circuit of the pixel circuit structure in a display device.

[0076] refer to Figure 2 Pixel PX may include a light-emitting element LD and a pixel driving circuit PC connected to the light-emitting element LD. In an embodiment, the pixel driving circuit PC may include first transistors to seventh transistors T1, T2, T3, T4, T5, T6, and T7, and a first capacitor C1. However, this disclosure is not limited thereto, and some components of the pixel driving circuit PC may be omitted, or other components may be added. In other words, Figure 2 The circuit structure of the pixel PX illustrated in the figure (e.g., the number or arrangement of transistors, the number or arrangement of capacitors) is merely an example and various changes can be made according to embodiments of this disclosure.

[0077] Figure 2The diagram illustrates that the first transistor T1, the third transistor T3, and the fourth transistor T4 are n-type transistors, and the second transistor T2, the fifth transistor T5, the sixth transistor T6, and the seventh transistor T7 are p-type transistors. However, this disclosure is not limited thereto, and some of the first to seventh transistors T1, T2, T3, T4, T5, T6, and T7 may be n-type transistors, while the 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, and T7 may be p-type transistors.

[0078] When a pixel PX includes both n-type and p-type transistors, 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, this disclosure is not limited thereto, and both the active patterns of the n-type transistor and the active patterns of the p-type transistor may include silicon semiconductor materials.

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

[0080] The first transistor T1 may include a gate terminal, a first terminal, and a second terminal. In an embodiment, the first terminal of the first transistor T1 may be the source, and the second terminal of the first transistor T1 may be the 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 can provide a drive 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 an embodiment, the first terminal of the second transistor T2 may be the source, and the second terminal of the second transistor T2 may be the drain. The gate terminal of the second transistor T2 can receive a first gate signal GW through a first gate line GWL. The first terminal of the second transistor T2 can receive a data voltage VDATA through a data line DL. The second terminal of the second transistor T2 can 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, if the second transistor T2 is a p-type transistor, it can be turned off when the first gate signal GW has a positive voltage level, and it can be turned on when the first gate signal GW has a negative voltage level. If the second transistor T2 is an n-type transistor, it can be turned off when the first gate signal GW has a negative voltage level, and it can be turned on when the first gate signal GW has a positive voltage level. When the second transistor T2 is turned on, its second terminal can provide the 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 an embodiment, the first terminal of the third transistor T3 may be the source, and the second terminal of the third transistor T3 may be the 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, if the third transistor T3 is an n-type transistor, it can be turned off when the second gate signal GC has a negative voltage level, and it can be turned on when the second gate signal GC has a positive voltage level. If the third transistor T3 is a p-type transistor, it can be turned off when the second gate signal GC has a positive voltage level, and it can be turned on when the second gate signal GC has a negative voltage level. When the third transistor T3 is turned on, it can connect to the first transistor T1 diode. 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 an embodiment, the first terminal of the fourth transistor T4 may be the source, and the second terminal of the fourth transistor T4 may be the drain. The gate terminal of the fourth transistor T4 may receive a third gate signal GI via a third gate line GIL. The first terminal of the fourth transistor T4 may receive a gate initialization voltage VINT via 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, if the fourth transistor T4 is an n-type transistor, it can be turned off when the third gate signal GI has a negative voltage level, and it can be turned on when the third gate signal GI has a positive voltage level. If the fourth transistor T4 is a p-type transistor, it can be turned off when the third gate signal GI has a positive voltage level, and it can be turned on when the third gate signal GI has a negative voltage level. When the fourth transistor T4 is turned on, it can provide the gate initialization voltage VINT to the first node N1. Accordingly, the fourth transistor T4 can initialize the voltage at 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 an embodiment, the first terminal of the fifth transistor T5 may be the source, and the second terminal of the fifth transistor T5 may be the drain. The gate terminal of the fifth transistor T5 can receive a transmit control signal EM via the transmit control line ECL. The first terminal of the fifth transistor T5 can receive a first power voltage ELVDD via the first voltage line VL1. The second terminal of the fifth transistor T5 can be connected to the second node N2.

[0088] The fifth transistor T5 can be turned on or off in response to the transmit control signal EM. For example, if the fifth transistor T5 is a p-type transistor, it can be turned off when the transmit control signal EM has a positive voltage level, and it can be turned on when the transmit control signal EM has a negative voltage level. If the fifth transistor T5 is an n-type transistor, it can be turned off when the transmit control signal EM has a negative voltage level, and it can be turned on when the transmit control signal EM has a positive voltage level. When the fifth transistor T5 is turned on, it can supply 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 an embodiment, the first terminal of the sixth transistor T6 may be the source, and the second terminal of the sixth transistor T6 may be the drain. The gate terminal of the sixth transistor T6 can receive a transmit control signal EM via the transmit 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 transmit control signal EM. For example, if the sixth transistor T6 is a p-type transistor, it can be turned off when the transmit control signal EM has a positive voltage level, and it can be turned on when the transmit control signal EM has a negative voltage level. If the sixth transistor T6 is an n-type transistor, it can be turned off when the transmit control signal EM has a negative voltage level, and it can be turned on when the transmit control signal EM has a positive voltage level. When the sixth transistor T6 is turned on, it can provide the drive 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 an embodiment, the first terminal of the seventh transistor T7 may be the source, and the second terminal of the seventh transistor T7 may be the drain. The gate terminal of the seventh transistor T7 may receive a fourth gate signal GB via a fourth gate line GBL. The first terminal of the seventh transistor T7 may receive an anode initialization voltage VAINT via 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, if the seventh transistor T7 is a p-type transistor, it can be turned off when the fourth gate signal GB has a positive voltage level, and it can be turned on when the fourth gate signal GB has a negative voltage level. If the seventh transistor T7 is an n-type transistor, it can be turned off when the fourth gate signal GB has a negative voltage level, and it can be turned on when the fourth gate signal GB has a positive voltage level. When the seventh transistor T7 is turned on, it can provide the anode initialization voltage VAINT to the fourth node N4. Accordingly, the seventh transistor T7 can initialize the voltage of the anode of the light-emitting element LD.

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

[0094] Although not in Figure 2 As illustrated in the diagram, the pixel driving circuit PC may further include a second capacitor. The second capacitor may include a first terminal supplied with a first electrical voltage ELVDD and a second terminal connected to the first terminal of the first transistor T1.

[0095] A light-emitting element (LD) may include an anode and a cathode. The anode of the LD may be connected to a fourth node N4. The cathode of the LD may receive a second power voltage ELVSS via a second voltage line VL2. The LD can produce light with a brightness corresponding to the drive current ID.

[0096] Figure 3 The illustration is based on an embodiment. Figure 1a and Figure 1b A schematic plan view of a portion of the display device. Figure 4 The illustration is based on an embodiment. Figure 3 An enlarged schematic diagram of one of the unit emission regions. Figure 5 It is according to the embodiment along Figure 4 A schematic cross-sectional view taken from line I-I'.

[0097] For example, Figure 3 The diagram illustrates a schematic of the four-cell transmission areas UEA1 and UEA2, arranged in a two-row, two-column matrix. Figure 4 The diagram shows an enlarged view of the first transmission area, UEA1, among the two transmission areas, UEA1 and UEA2. For ease of description, [the diagram is shown in the original text]. Figure 3 and Figure 4 Omission or emphasis Figure 5 Some of the components shown in the diagram.

[0098] refer to Figure 3 and Figure 4 The display device DD according to the embodiment may include a first pixel driving circuit to a third pixel driving circuit PCa, PCb and PCc, a first light-emitting element to a third light-emitting element LDa, LDb and LDc, a first auxiliary connection pattern to a third auxiliary connection pattern ACPa, ACPb and ACPc and a separator SPR.

[0099] Each of the first pixel driving circuit to the third pixel driving circuits PCa, PCb, and PCc can be referenced above. Figure 2 The pixel driving circuit PC described corresponds to this. For example, each of the first to third pixel driving circuits PCa, PCb, and PCc may include at least one transistor and at least one capacitor. Figure 5 The diagram shows transistor TR, first capacitor CAP1, and second capacitor CAP2.

[0100] Figure 5 The transistor TR can be a transistor connected to the light-emitting element via an anode connection electrode (not shown). For example, each of the first pixel driving circuit to the third pixel driving circuits PCa, PCb, and PCc is... Figure 2 In the case of a pixel driving circuit PC, Figure 5 The transistor TR can be Figure 2 The sixth transistor, T6. Additionally... Figure 5 The first capacitor CAP1 can be with Figure 2 The first capacitor C1 corresponds to this and can be omitted. Figure 5 The second capacitor CAP2. However, this disclosure is not limited thereto. Figure 5 The second capacitor CAP2 can be connected with Figure 2 The first capacitor C1 corresponds to this and can be omitted. Figure 5 The first capacitor, CAP1. See below for reference. Figure 5 The transistor TR, the first capacitor CAP1, and the second capacitor CAP2 are described in more detail.

[0101] Figure 3 and Figure 4 The illustration shows that the first pixel driving circuit to the third pixel driving circuits PCa, PCb, and PCc each have a rectangular shape in a plan view and are arranged sequentially in a first direction DR1. However, this disclosure is not limited thereto, and the shape and arrangement of the first pixel driving circuit to the third pixel driving circuits PCa, PCb, and PCc can be varied according to embodiments of this disclosure.

[0102] Each of the first to third light-emitting elements LDa, LDb, and LDc can be referenced above. Figure 2 The light-emitting element LD is described. For example, each of the first to third light-emitting elements LDa, LDb, and LDc may include a first electrode (e.g., Figure 5 The first electrode E1), and the intermediate layer disposed on the first electrode (e.g., Figure 5The first electrode can be used as an intermediate layer (ML) and an electrode layer E2L disposed on the intermediate layer. In an embodiment, the first electrode can be used as an intermediate layer (ML). Figure 2 The anode, and the electrode layer E2L can be used as... Figure 2 The cathode. The first electrode of the first light-emitting element LTa, the first electrode of the second light-emitting element LDb, and the first electrode of the second light-emitting element LDc can be spaced apart from each other in the planar view. In other words, the first electrode of the first light-emitting element LTa, the first electrode of the second light-emitting element LDb, and the first electrode of the second light-emitting element LDc can be different patterns that are physically separated from each other.

[0103] In an embodiment, the electrode layer E2L can be separated (or disconnected) by the separator SPR into second electrodes E2a, E2b, and E2c spaced apart from each other. For example, the electrode layer E2L can be separated (or disconnected) 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.

[0104] The first to third light-emitting elements LDa, LDb, and LDc can be connected to the first to third pixel driving circuits PCa, PCb, and PCc, respectively. Accordingly, the first pixel driving circuit PCa and the first light-emitting element LDa can form a pixel, the second pixel driving circuit PCb and the second light-emitting element LDb can form a pixel, and the third pixel driving circuit PCc and the third light-emitting element LDc can form a pixel.

[0105] The first to third light-emitting elements LDa, LDb, and 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, this disclosure is not limited thereto.

[0106] In an embodiment, such as Figure 3 As shown, the display device DD may include a first unit transmission area UEA1 and a second unit transmission area UEA2. The first unit transmission area UEA1 and the second unit transmission area UEA2 may be defined in a matrix form along a first direction DR1 and a second direction DR2. Although Figure 3 Only four unit emission areas are shown, but the entire display area DA (see diagram) is possible. Figure 1a and Figure 1b In the first direction DR1 and the second direction DR2, multiple unit emission areas are defined in matrix form.

[0107] The first to third light-emitting elements LDa, LDb, and LDc that are adjacent to each other can be disposed in each of the first unit emission region UEA1 and the second unit emission region UEA2. For example, the first to third emission regions EAa, EAb, and EAc that are adjacent to each other can be defined in each of the first unit emission region UEA1 and the second unit emission region UEA2, and the first to third light-emitting elements LDa, LDb, and LDc can be disposed in the first to third emission regions EAa, EAb, and EAc, respectively.

[0108] The first to third emission regions EAa, EAb, and EAC can be defined by a pixel-defined layer PDL (described later) (see Figure 5 The pixel opening is defined by the first to third emission regions EAa, EAb, and EAc. Each of these regions can be a region that emits light from a light-emitting element. For example, a first light-emitting element LDa can be disposed in the first emission region EAa, and the first emission region EAa can be a region that emits light from the first light-emitting element LDa. For example, a second light-emitting element LDb can be disposed in the second emission region EAb, and the second emission region EAb can be a region that emits light from the second light-emitting element LDb. For example, a third light-emitting element LDc can be disposed in the third emission region EAc, and the third emission region EAc can be a region that emits light from the third light-emitting element LDc. The first to third emission regions EAa, EAb, and EAc can emit light of different colors. For example, the first emission region EAa can emit red light, the second emission region EAb can emit green light, and the third emission region EAc can emit blue light. However, this disclosure is not limited thereto.

[0109] In the embodiments, the first unit emission area UEA1 and the second unit emission area UEA2 can be distinguished based on the arrangement of the first light-emitting element to the third light-emitting element LDa, LDb, and LDc (or the arrangement of the first emission area to the third emission area EAa, EAb, and EAc). For example, for each first unit emission area UEA1, the arrangement of the first light-emitting element to the third light-emitting element LDa, LDb, and LDc (or the arrangement of the first emission area to the third emission area EAa, EAb, and EAc) can be the same, and for each second unit emission area UEA2, the arrangement of the first light-emitting element to the third light-emitting element LDa, LDb, and LDc (or the arrangement of the first emission area to the third emission area EAa, EAb, and EAc) can be the same.

[0110] In an embodiment, such as Figure 3As shown, the first unit transmission area UEA1 and the second unit transmission area UEA2 can be alternately arranged in the first direction DR1 (i.e., the row direction) and the second direction DR2 (i.e., the column direction). However, this disclosure is not limited thereto, and the number of different unit transmission areas or the arrangement of the unit transmission areas included in the display device DD can be varied according to embodiments of this disclosure.

[0111] Figure 3 and Figure 4 The illustration shows the first to third transmission zones EAa, EAb, and EAc arranged in an S-striped structure, but this disclosure is not limited thereto. The arrangement of the first to third transmission zones EAa, EAb, and EAc can be varied according to embodiments of this disclosure.

[0112] In a plan view, the separator SPR may not overlap with each of the first to third transmission regions EAa, EAb, and EAc. In a plan view, the separator SPR may be disposed between the first to third transmission regions EAa, EAb, and EAc. For example, in a plan view, the separator SPR may be disposed between the first transmission region EAa and the second transmission region EAb, between the second transmission region EAb and the third transmission region EAc, and between the first transmission region EAa and the third transmission region EAc. In a plan view, the separator SPR may surround at least a portion of each of the first to third transmission regions EAa, EAb, and EAc. In embodiments, such as... Figure 3 and Figure 4 As shown in the diagram, in a plan view, the separator SPR may completely surround each of the first to third transmission regions EAa, EAb, and EAc. However, this disclosure is not limited thereto, and in a plan view, the separator SPR may surround a portion of each of the first to third transmission regions EAa, EAb, and EAc, and may not surround another portion of each of the first to third transmission regions EAa, EAb, and EAc.

[0113] In the display area DA, the separator SPR can separate (or disconnect) the electrode layer E2L 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, in the plan view, the second electrodes 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.

[0114] The separator SPR can define first opening regions to third opening regions OA1, OA2, and OA3, respectively, corresponding to the second electrodes E2a, E2b, and E2c. For example, in a plan view, the separator SPR can have a mesh structure surrounding the second electrodes E2a, E2b, and E2c. The second electrode E2a of the first light-emitting element LDa can be disposed in the first opening region OA1 of the separator SPR, the second electrode E2b of the second light-emitting element LDb can be disposed in the second opening region OA2 of the separator SPR, and the second electrode E2c of the third light-emitting element LDc can be disposed in the third opening region OA3 of the separator SPR.

[0115] In an embodiment, in a planar view, the planar shape of the first opening region OA1 and the planar shape of the second electrode E2a of the first light-emitting element LDa can be substantially the same, the planar shape of the second opening region OA2 and the planar shape of the second electrode E2b of the second light-emitting element LDb can be substantially the same, and the planar shape of the third opening region OA3 and the planar shape of the second electrode E2c of the third light-emitting element LDc can be substantially the same.

[0116] The spacer SPR may include an organic insulating material. For example, the spacer SPR may include a photosensitive resin (e.g., a photoresist), but this disclosure is not limited thereto.

[0117] In the following text, it will be referred to as Figure 4 Centered on the first unit emission region UEA1, this section describes in more detail the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc. The following description of the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc can be applied substantially equivalently or similarly to all unit emission regions.

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

[0119] The first to third auxiliary connection patterns ACPa, ACPb, and ACPc may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof. In embodiments, examples of conductive materials that can be used for each of the first to third auxiliary connection patterns ACPa, ACPb, and ACPc may 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), alloys containing Al, and alloys containing... Alloys of Ag, alloys containing Cu, alloys containing Mo, aluminum nitride (AlNx), tungsten nitride (WNx), titanium nitride (TiNx), chromium nitride (CrNx), tantalum nitride (TaNx), tin oxide (SnOx), gallium oxide (GaOx), indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), zinc oxide (ZnOx), indium oxide (InOx), or aluminum zinc oxide (AZO), etc. These can be used individually or in combination with each other. In embodiments, each of the first to third auxiliary connection patterns ACPa, ACPb, and ACPc can have a single-layer structure or a multilayer structure in which multiple conductive layers are stacked on top of each other. Reference will be made later. Figure 5 This will be described in detail.

[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 can be connected to the auxiliary electrode AUE by the first auxiliary connection pattern ACPa (see...). Figure 5 For example, the location of the first auxiliary electrode connection portion CAa can be such that it exposes the auxiliary electrode AUE and penetrates the fifth insulating layer IL5 (see...). Figure 5 The positions of the contact holes correspond to those of the contacts.

[0122] The first light-emitting connection portion CNa can be the portion of the first auxiliary connection pattern ACPa that connects to the second electrode E2a of the first light-emitting element LDa. For example, the first light-emitting connection portion CNa can be the portion of the first auxiliary connection pattern ACPa that is covered by the sixth insulating layer IL6 (see...). Figure 5 ) and pixel-limited layer PDL (see Figure 5The portion of the first light-emitting connection portion CNa is exposed to connect to the second electrode E2a. Accordingly, the position of the first light-emitting connection portion CNa can correspond to the position of the 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. For example, the second electrode E2a of the first light-emitting element LDa can contact the first auxiliary connection pattern ACPa. As a result, the second electrode E2a of the first light-emitting element LDa can be electrically connected to the auxiliary electrode AUE (see [reference needed]) through the first auxiliary connection pattern ACPa. Figure 5 ).

[0124] In an embodiment, the first light-emitting connection portion CNa can be positioned at a location that does not overlap with the first emitting region EAa. For example, the second electrode E2a of the first light-emitting element LDa and the first auxiliary connection pattern ACPa can be in contact with each other at a location that does not overlap with the first emitting region EAa. For example, in a plan view, the first light-emitting connection portion CNa can be positioned between the first emitting region EAa and the separator SPR. Accordingly, the second electrode E2a of the first light-emitting element LDa and the auxiliary electrode AUE can be electrically connected to each other via the first auxiliary connection pattern ACPa without reducing the size of the first emitting region 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 can be the part of the second auxiliary connection pattern ACPb that connects to the auxiliary electrode. For example, the position of the second auxiliary electrode connection portion CAb can correspond to the position of the contact hole that exposes the auxiliary electrode and penetrates the fifth insulating layer.

[0127] The second light-emitting connection portion CNb can be the portion of the second auxiliary connection pattern ACPb that connects to the second electrode E2b of the second light-emitting element LDb. For example, the second light-emitting connection portion CNb can be the portion of the second auxiliary connection pattern ACPb exposed by the sixth insulating layer and the pixel defining layer to connect to the second electrode E2b. Accordingly, the position of the second light-emitting connection portion CNb can correspond to the position of the opening that exposes the second auxiliary connection pattern ACPb and penetrates the pixel defining layer and the sixth insulating layer.

[0128] In an embodiment, in a plan view, the second auxiliary connection pattern ACPb may be spaced apart from the first auxiliary connection pattern ACPa. In other words, the first auxiliary connection pattern ACPa and the second auxiliary connection pattern ACPb may be different electrodes.

[0129] The second electrode E2b of the second light-emitting element LDb can be connected to the second auxiliary connection pattern ACPb. For example, the second electrode E2b of the second light-emitting element LDb can contact the second auxiliary connection pattern ACPb. As a result, the second electrode E2b of the second light-emitting element LDb can be electrically connected to the auxiliary electrode through the second auxiliary connection pattern ACPb.

[0130] In an embodiment, the second light-emitting connection portion CNb can be positioned where it does not overlap with the second emitting region EAb. For example, the second electrode E2b and the second auxiliary connection pattern ACPb of the second light-emitting element LDb can contact each other in a position where they do not overlap with the second emitting region EAb. For example, in a plan view, the second light-emitting connection portion CNb can be positioned between the second emitting region EAb and the separator SPR. Accordingly, the second electrode E2b and the auxiliary electrode of the second light-emitting element LDb can be electrically connected to each other via the second auxiliary connection pattern ACPb without reducing the size of the second emitting region 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 can be the part of the third auxiliary connection pattern ACPc that connects to the auxiliary electrode. For example, the position of the third auxiliary electrode connection portion CAc can correspond to the position of the contact hole that exposes the auxiliary electrode and penetrates the fifth insulating layer.

[0133] The third light-emitting connection portion CNc can be the portion of the third auxiliary connection pattern ACPc that connects to the second electrode E2c of the third light-emitting element LDc. For example, the third light-emitting connection portion CNc can be the portion of the third auxiliary connection pattern ACPc that is exposed by the sixth insulating layer and the pixel defining layer to connect to the second electrode E2c. Accordingly, the position of the third light-emitting connection portion CNc can correspond to the position of the opening that exposes the third auxiliary connection pattern ACPc and penetrates the pixel defining layer and the sixth insulating layer.

[0134] In an embodiment, in a plan view, the third auxiliary connection pattern ACPc may be spaced apart from the first auxiliary connection pattern ACPa and the second auxiliary connection pattern ACPb. 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 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. For example, the second electrode E2c of the third light-emitting element LDc can contact the third auxiliary connection pattern ACPc. As a result, the second electrode E2c of the third light-emitting element LDc can be electrically connected to the auxiliary electrode through the third auxiliary connection pattern ACPc.

[0136] In an embodiment, the third light-emitting connection portion CNc can be positioned where it does not overlap with the third emitting region EAc. For example, the second electrode E2c of the third light-emitting element LDc and the third auxiliary connection pattern ACPc can be in contact with each other in a position where they do not overlap with the third emitting region EAc. For example, in a plan view, the third light-emitting connection portion CNc can be positioned between the third emitting region EAc and the separator SPR. Accordingly, the second electrode E2c of the third light-emitting element LDc and the auxiliary electrode can be electrically connected to each other via the third auxiliary connection pattern ACPc without reducing the size of the third emitting region EAc.

[0137] In an embodiment, such as Figure 3 As shown, for each first unit transmission area UEA1, the shape or arrangement of each of the first auxiliary connection patterns to the third auxiliary connection patterns ACPa, ACPb, and ACPc can be the same. For each second unit transmission area UEA2, the shape or arrangement of each of the first auxiliary connection patterns to the third auxiliary connection patterns ACPa, ACPb, and ACPc can be the same.

[0138] In the following text, the first launch zone EAa will be used as the reference point. Figure 5 The cross-sectional structure of the display device DD is described in more detail below. The following description of the cross-sectional structure of the display device DD can be applied substantially the same to all emission areas.

[0139] Further reference Figure 5 The display device DD may include a substrate SUB, a first bottom conductive layer BML1, a second bottom conductive layer BML2, a transistor TR, a first capacitor CAP1, a second capacitor CAP2, an auxiliary electrode AUE, a first auxiliary connection pattern ACPa, a first insulating layer to a sixth insulating layer IL1, IL2, IL3, IL4, IL5 and 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 can serve as the substrate of the display device DD. In embodiments, examples of materials that can be used as the substrate SUB include glass, quartz, silicon, or polymers. These can be used individually or in combination. The substrate SUB can have a single-layer structure or a multi-layer structure comprising multiple layers of different materials stacked on top of each other.

[0143] The first bottom conductive layer BML1, the second bottom conductive layer BML2, and the third capacitor electrode CPE3 can be disposed on the substrate SUB. In an embodiment, different electrical signals can be applied to the first bottom conductive layer BML1 and the second bottom conductive layer BML2. The second power voltage ELVSS (see...) Figure 2 The first bottom conductive layer BML1, the second bottom conductive layer BML2, and the third capacitor electrode CPE3 may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof.

[0144] The first insulating layer IL1 may overlap with the first bottom conductive layer BML1, the second bottom conductive layer BML2, and the third capacitor electrode CPE3, and may be disposed on the substrate SUB. The first insulating layer IL1 can prevent or reduce the diffusion of metal atoms or impurities from the substrate SUB to the active pattern AP. The first insulating layer IL1 may include an insulating material. In embodiments, examples of insulating materials that can be used as the first insulating layer IL1 may include silicon oxide, silicon nitride, or silicon oxynitride. These may be used individually or in combination with each other.

[0145] An active pattern AP can be disposed on a first insulating layer IL1. In an embodiment, in a plan view, the active pattern AP can overlap with a first bottom conductive layer BML1. The active pattern AP can include an oxide semiconductor material, a silicon semiconductor material, and / or an organic semiconductor material. The active pattern AP can include a first contact region S, a second contact region D, and a channel region CH between the first contact region S and the second contact region D. The first contact region S and the second contact region D can have a higher conductivity than the channel region CH.

[0146] In embodiments, the active patterned AP may include an oxide semiconductor material. Examples of oxide semiconductor materials that can be used as an active patterned AP include indium gallium zinc oxide (IGZO), zinc tin oxide (ZTO), indium tin zinc oxide (ITZO), and combinations thereof. These can be used individually or in combination with each other. However, this disclosure is not limited thereto, and the active patterned AP may include different materials.

[0147] The second insulating layer IL2 may overlap with the active pattern AP and may be disposed on the first insulating layer IL1. The second insulating layer IL2 may include an insulating material. In embodiments, examples of insulating materials that can be used as the second insulating layer IL2 may include silicon oxide, silicon nitride, or silicon oxynitride, etc. These may be used individually or in combination with each other.

[0148] The gate electrode GE can be disposed on the second insulating layer IL2. In a plan view, the gate electrode GE can overlap with the channel region CH of the active pattern AP. The gate electrode GE can include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, and combinations thereof. Although not illustrated, in an embodiment, the gate electrode GE can contact the first bottom conductive layer BML1.

[0149] A first capacitor electrode CPE1 may be disposed on a second insulating layer IL2. In a plan view, the first capacitor electrode CPE1 may overlap with a third capacitor electrode CPE3. 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, alloy, conductive metal oxide, conductive metal nitride, transparent conductive oxide, or a combination thereof.

[0150] The third insulating layer IL3 may overlap with 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. In embodiments, examples of insulating materials that may be used as the third insulating layer IL3 may include silicon oxide, silicon nitride, or silicon oxynitride, etc. These may be used individually or in combination with each other.

[0151] The second capacitor electrode CPE2 can be disposed on the third insulating layer IL3. In a plan view, the second capacitor electrode CPE2 can overlap with the first capacitor electrode CPE1. The first capacitor electrode CPE1 and the second capacitor electrode CPE2 can form the first capacitor CAP1. The second capacitor electrode CPE2 can include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof.

[0152] The fourth insulating layer IL4 may overlap with 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. In embodiments, examples of insulating materials that may be used as the fourth insulating layer IL4 may include silicon oxide, silicon nitride, or silicon oxynitride, etc. These may be used individually or in combination with each other.

[0153] The first contact electrode SE and the second contact electrode DE can be disposed on the fourth insulating layer IL4. The first contact electrode SE can contact the first contact area S of the active pattern AP, and the second contact electrode DE can contact the second contact area D of the active pattern. The first contact electrode SE and the second contact electrode DE can include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof.

[0154] In one embodiment, the second contact electrode DE may contact the first bottom conductive layer BML1. However, this disclosure is not limited thereto. For example, if the gate electrode GE contacts the first bottom conductive layer BML1, the second contact electrode DE may not contact the first bottom conductive layer BML1.

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

[0156] The auxiliary electrode AUE can be disposed in the display area DA, on the substrate SUB. For example, the auxiliary electrode AUE can be disposed in the display area DA, on the fourth insulating layer IL4. The auxiliary electrode AUE can contact the second bottom conductive layer BML2. The second power voltage ELVSS (see...) Figure 2 An auxiliary electrode (AUE) can be applied to the auxiliary electrode. The auxiliary electrode (AUE) may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof.

[0157] The second bottom conductive layer BML2 and the auxiliary electrode AUE can be electrically connected to each other. The second power voltage ELVSS (see...) Figure 2The second bottom conductive layer BML2 and the auxiliary electrode AUE can be applied to the second electrical voltage ELVSS (see [link to relevant documentation]). Figure 2 The transmission lines are transmitted to the second electrodes E2a, E2b, and E2c. The second bottom conductive layer BML2 can be referred to as the first power transmission line, and the auxiliary electrode AUE can be referred to as the second power transmission line.

[0158] In an embodiment, a plurality of second bottom conductive layers BML2 and a plurality of auxiliary electrodes AUE may be provided. Throughout the display area DA, the second bottom conductive layers BML2 and the auxiliary electrodes AUE may together define a mesh structure in a planar view. For example, a plurality of second bottom conductive layers BML2, each extending in a second direction DR2, may be disposed in a first direction DR1, and a plurality of auxiliary electrodes AUE, each extending in the first direction DR1, may be disposed in the second direction DR2. However, this disclosure is not limited thereto.

[0159] In an embodiment, at least one of the second bottom conductive layer BML2 and the auxiliary electrode AUE can extend to the peripheral region NDA (see Figure 1a and Figure 1b At least one of the second bottom conductive layer BML2 and the auxiliary electrode AUE can be connected to the second power line VSL2 in the peripheral region (see...). Figure 1a and Figure 1b And it can receive a second power voltage ELVSS from the second power line (see...) Figure 2 Accordingly, the second electrical voltage ELVSS (see...) Figure 2 It can be applied to the second bottom conductive layer BML2 and the auxiliary electrode AUE.

[0160] The fifth insulating layer IL5 may overlap with 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. In embodiments, examples of organic insulating materials that can be used as the fifth insulating layer IL5 may include photoresists, polypropylene resins, polyimide resins, polyamide resins, siloxane resins, acrylic resins, or epoxy resins, etc. These may be used alone or in combination with each other.

[0161] The first auxiliary connection pattern ACPa can be disposed on the auxiliary electrode AUE. For example, the first auxiliary connection pattern ACPa can be disposed in the display area DA, on the fifth insulating layer IL5. As described above, the first auxiliary connection pattern ACPa can be electrically connected to the auxiliary electrode AUE. For example, the first auxiliary connection pattern ACPa can contact 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 can correspond to the position of the contact hole CNT.

[0162] The first auxiliary connection pattern ACPa may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof. In embodiments, the first auxiliary connection pattern ACPa may have a multilayer structure in which multiple conductive layers are stacked on top of each other. 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 stacked sequentially on top of each other.

[0163] In an embodiment, the first conductive layer CL1 may comprise a metal and / or a transparent conductive oxide. Examples of metals that can be used as the first conductive layer CL1 include Ti, Mo, and combinations thereof. Examples of transparent conductive oxides that can be used as the first conductive layer CL1 include ITO, IZO, ZnOx, InOx, IGO, AZO, and combinations thereof. Compared to the second conductive layer CL2, the first conductive layer CL1 may have a thinner thickness.

[0164] The second conductive layer CL2 may comprise a different material than the first conductive layer CL1. For example, the second conductive layer CL2 may comprise a different metal than the first conductive layer CL1. In embodiments, examples of metals that can be used as the second conductive layer CL2 may include Al, Cu, or combinations thereof. Compared to the first conductive layer CL1, the second conductive layer CL2 may have a greater thickness.

[0165] The third conductive layer CL3 may comprise a different material than the second conductive layer CL2. For example, the third conductive layer CL3 may comprise a different metal and / or transparent conductive oxide than the second conductive layer CL2. In embodiments, examples of metals that can be used as the third conductive layer CL3 may include Ti, Mo, or combinations thereof. Examples of transparent conductive oxides that can be used as the third conductive layer CL3 may include ITO, IZO, ZnOx, InOx, IGO, AZO, or combinations thereof. Compared to the second conductive layer CL2, the third conductive layer CL3 may have a thinner thickness.

[0166] In some embodiments, the first conductive layer CL1 and the third conductive layer CL3 may comprise the same material. However, this disclosure is not limited thereto.

[0167] The side surface CL2-S of the second conductive layer CL2 can be recessed from the side surface CL1-S of the first conductive layer CL1 and the side surface CL3-S of the third conductive layer CL3 in a direction toward the center of the first auxiliary connection pattern ACPa. In other words, the side surfaces CL1-S of the first conductive layer CL1 and CL3-S of the third conductive layer CL3 can protrude outward from the side surface CL2-S of the second conductive layer CL2. Accordingly, the first auxiliary connection pattern ACPa can have a pointed portion due to the portion of the third conductive layer CL3 that protrudes compared to the second conductive layer CL2. For example, based on the same etching process, when etching the second conductive layer CL2 using an etching material that has a higher etching rate than the first conductive layer CL1 and the third conductive layer CL3, the first auxiliary connection pattern ACPa can be formed to have a pointed portion.

[0168] Figure 5 The illustration shows a first auxiliary connection pattern ACPa having a three-layer structure in which the first to third conductive layers CL1, CL2, and CL3 are stacked on top of each other. However, this disclosure is not limited to this, 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 on top of each other. For example, the first conductive layer CL1 may be omitted.

[0169] The anode connection electrode can be disposed on the fifth insulating layer IL5. Although not on Figure 5 The cross-sectional view is illustrated, but the anode connection electrode can contact the second contact electrode DE and the first electrode E1. Accordingly, the anode connection electrode can electrically connect the transistor TR and the first light-emitting element LDa to each other. The anode connection electrode can include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof.

[0170] The sixth insulating layer IL6 may overlap with the anode connection electrode and may be disposed on the fifth insulating layer IL5. For example, the sixth insulating layer IL6 may partially overlap with the first auxiliary connection pattern ACPa and may 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. For example, 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. In embodiments, examples that may be used as the sixth insulating layer IL6 may include photoresist, polypropylene resins, polyimide resins, polyamide resins, siloxane resins, acrylic resins, or epoxy resins, etc. These may be used alone or in combination with each other.

[0171] The first electrode E1 can be disposed in the display area DA and on the substrate SUB. For example, the first electrode E1 can be disposed on the sixth insulating layer IL6. The first electrode E1 can contact the anode connection electrode. Accordingly, the first electrode E1 can be electrically connected to the transistor TR through the anode connection electrode. The first electrode E1 can include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof. As described above, the first electrode E1 can be used as... Figure 2 The anode.

[0172] A pixel defining layer PDL can be disposed on the substrate SUB and can define a pixel opening that exposes the first electrode E1. For example, the pixel defining layer PDL can be disposed on the sixth insulating layer IL6 and the first electrode E1 and can define a pixel opening that exposes at least a portion of the first electrode E1. The first emitter region EAa can be defined by the pixel opening.

[0173] The pixel-defining layer (PDL) can further define a second sub-opening (SO2) corresponding to a first sub-opening (SO1) of the sixth insulating layer (IL6). The second sub-opening (SO2) can overlap with the first sub-opening (SO1) in a plan view, and the first and second sub-openings (SO1 and SO2) can be spatially connected to each other. For example, the first and second sub-openings (SO1 and SO2) can be connected to form an opening (OP), and the opening (OP) can expose at least a portion of the first auxiliary connection pattern (ACPa). For example, the opening (OP) can expose the tip portion of the first auxiliary connection pattern (ACPa).

[0174] The pixel defining layer (PDL) may include an insulating material. For example, the PDL may include an organic insulating material. In embodiments, examples of organic insulating materials that can be used as the PDL may include photoresists, polypropylene resins, polyimide resins, polyamide resins, siloxane resins, acrylic resins, or epoxy resins. These may be used alone or in combination with each other. In embodiments, the PDL may further include inorganic or organic materials comprising a black light-shielding material.

[0175] The separator SPR can be disposed on the pixel definition layer (PDL). The width of the upper part of the separator SPR can be greater than the width of the lower part of the separator SPR. For example, the side surface of the separator SPR that connects the upper and lower surfaces of the separator SPR can be a reverse tapered slope. In other words, the cross-sectional shape of at least a portion of the separator SPR can be an inverted trapezoid.

[0176] Figure 5The illustration shows a side surface of the spacer SPR having a single reverse tapered ramp. However, this disclosure is not limited to this, and the side surface of the spacer SPR may have multiple reverse tapered ramps. For example, the spacer SPR may have a double reverse tapered structure (see...). Figure 9 ).

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

[0178] Shaded areas where it is difficult to deposit the intermediate layer ML can exist around the separator SPR with a reverse tapered slope. Accordingly, the intermediate layer ML can have a structure that is separated (or disconnected) by the separator SPR in and / or around the shaded area. For example, each of the first and second functional layers included in the intermediate layer ML can have a structure that is separated (or disconnected) by the separator SPR. Accordingly, leakage current (lateral leakage) between the first light-emitting element LDa and other adjacent light-emitting elements (e.g., the second light-emitting element LDb and the third light-emitting element LDc) can be prevented or reduced. For example, color mixing caused by unnecessary emission from other adjacent light-emitting elements can be prevented or reduced. Accordingly, the display quality of the display device DD can be improved.

[0179] The first dummy layer DP1 can be disposed on the separator SPR. The first dummy layer DP1 can be formed from an intermediate layer ML separated (or disconnected) by the separator SPR. For example, the first dummy layer DP1 and the intermediate layer ML can be formed in the same process. In an embodiment, the first dummy layer DP1 can be omitted.

[0180] The intermediate layer ML can also be separated (or disconnected) through the tip of the first auxiliary connection pattern ACPa. Because the intermediate layer ML is separated (or disconnected) through the tip of the first auxiliary connection pattern ACPa, at least a portion of the side surface CL2-S of the second conductive layer CL2 can be exposed. Accordingly, the second electrode E2a of the first light-emitting element LDa can contact the side surface CL2-S of the second conductive layer CL2.

[0181] Electrode layer E2L can be disposed on intermediate layer ML. Electrode layer E2L may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, and combinations thereof. In embodiments, electrode layer E2L may have a single-layer structure. However, this disclosure is not limited thereto, and electrode layer E2L may have a multilayer structure in which multiple conductive layers are stacked on top of each other. For example, electrode layer E2L may have a two-layer structure in which a first sub-electrode layer comprising a metallic material and a second sub-electrode layer comprising a transparent conductive oxide are stacked on top of each other.

[0182] The shadowed areas where it is difficult to deposit the electrode layer E2L can exist around the separator SPR with a reverse tapered slope. Within and / or around the shadowed areas, the electrode layer E2L can have a structure separated (or disconnected) by the separator SPR. For example, the electrode layer E2L can be separated (or disconnected) into a second electrode E2a for the first light-emitting element LDa, a second electrode E2b for the second light-emitting element LDb, and a second electrode E2c for the third light-emitting element LDc.

[0183] The second electrode E2a of the first light-emitting element LDa can be connected to the first auxiliary connection pattern ACPa. For example, the second electrode E2a can contact the side surface CL2-S of the second conductive layer CL2. For example, if 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 (e.g., the second electrode E2a) can be formed to overlap with the intermediate layer ML, which is separated (or disconnected) by a tip portion, such that the electrode layer E2L can contact the side surface CL2-S of the second conductive layer CL2. As a result, the second electrode E2a can be connected to the auxiliary electrode AUE through the first auxiliary connection pattern ACPa. Accordingly, the second electrode E2a can receive the second power voltage ELVSS (see...) from the auxiliary electrode AUE. Figure 2 ).

[0184] In an embodiment, the electrode layer E2L (e.g., the second electrode E2a) may also be separated (or disconnected) via the tip portion of the first auxiliary connection pattern ACPa. However, this disclosure is not limited thereto, and the electrode layer E2L (e.g., the second electrode E2a) may be formed to extend without being separated via the tip portion.

[0185] The second dummy layer DP2 can be disposed on the separator SPR. For example, the second dummy layer DP2 can be disposed on the first dummy layer DP1. The second dummy layer DP2 can be formed from an electrode layer E2L separated (or disconnected) by the separator SPR. For example, the second dummy layer DP2 and the electrode layer E2L can be formed in the same process. In an embodiment, the second dummy layer DP2 can be omitted.

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

[0187] Although not illustrated, in embodiments, the touch sensing layer may be disposed on the encapsulation layer ENC. For example, the touch sensing layer may include a plurality of touch electrode arrays for capacitively detecting user input, touch pad portions, and a plurality of touch wirings electrically connecting the touch pad portions and the touch electrode arrays. However, this disclosure is not limited thereto. In embodiments, the touch sensing layer may be omitted.

[0188] According to embodiments of this disclosure, the display device DD may include an applied second electrical voltage ELVSS (see... Figure 2 The display device DD has an auxiliary electrode AUE and auxiliary connection patterns ACPa, ACPb, and ACPc that contact the auxiliary electrode AUE and each have a pointed portion. Because the auxiliary connection patterns ACPa, ACPb, and ACPc each have a pointed portion, the electrode layer E2L (e.g., a cathode) can be easily connected to the auxiliary connection patterns ACPa, ACPb, and ACPc. The electrode layer E2L can be electrically connected to the auxiliary electrode AUE through the auxiliary connection patterns ACPa, ACPb, and ACPc. Accordingly, the electrode layer E2L can receive a second electrical voltage from the auxiliary electrode AUE, and the voltage drop (IR drop) phenomenon of the second electrical voltage supplied to the electrode layer E2L can be reduced. Therefore, the display quality of the display device DD can be improved.

[0189] Figure 6 and Figure 7 This is a schematic plan view illustrating a portion of a display device according to an embodiment. Figure 8 The illustration is based on an embodiment. Figure 7 An enlarged schematic diagram of one of the unit emission regions. Figure 9 It is according to the embodiment along Figure 8 A schematic cross-sectional view taken from line II-II'.

[0190] For example, Figure 6 and Figure 7 The diagram illustrates a schematic of the four-cell transmission areas UEA1 and UEA2, arranged in a two-row, two-column matrix. Figure 8 The diagram shows an enlarged view of the first unit transmission area, UEA1, in unit transmission areas UEA1 and UEA2. Figure 6 and Figure 7 Each of the images can be compared with Figure 3 Correspondingly, Figure 8 Can be with Figure 4 Correspondingly, and Figure 9 Can be with Figure 5 Correspondingly.

[0191] For ease of description, Figures 6 to 8 The text omits or emphasizes Figure 9 Some of the components shown in the diagram. For example, Figure 6 This is a schematic plan view illustrating the first to third auxiliary connection patterns ACPa, ACPb, and ACPc, as well as the auxiliary connection electrode ACE. Figure 7 The diagram further illustrates the settings. Figure 6 A schematic plan view of the separator SPR on the auxiliary connection electrode ACE.

[0192] In addition to the display device DD-1 further including an auxiliary connection electrode ACE that electrically connects the auxiliary connection patterns ACPa, ACPb, and ACPc to the second electrodes E2a, E2b, and E2c, according to reference Figures 6 to 9 The display device DD-1 described in the embodiment can be compared with the above reference. Figures 1a to 5 The described display devices DD are substantially the same or similar. Therefore, repeated descriptions will be omitted or simplified.

[0193] refer to Figures 6 to 9 The display device DD-1 according to the embodiment may include a first pixel driving circuit to a third pixel driving circuit PCa, PCb and PCc, a first light-emitting element to a third light-emitting element LDa, LDb and LDc, a first auxiliary connection pattern to a third auxiliary connection pattern ACPa, ACPb and ACPc, an auxiliary connection electrode ACE and a separator SPR.

[0194] In a plan view, the auxiliary connection electrode ACE may not overlap with each of the first to third emitter regions EAa, EAb, and EAc. In a plan view, the auxiliary connection electrode ACE may be disposed between the first to third emitter regions EAa, EAb, and EAc. For example, in a plan view, the auxiliary connection electrode ACE may be disposed between the first emitter region EAa and the second emitter region EAb, between the second emitter region EAb and the third emitter region EAc, and between the first emitter region EAa and the third emitter region EAc. In a plan view, the auxiliary connection electrode ACE may surround at least a portion of each of the first to third emitter regions EAa, EAb, and EAc. In embodiments, such as... Figures 6 to 8 As shown in the diagram, in the plan view, the auxiliary connection electrode ACE can completely surround each of the first to third emitter regions EAa, EAb and EAc.

[0195] In an embodiment, in a plan view, the auxiliary connection electrode ACE may have a mesh structure surrounding each of the first to third emission regions EAa, EAb, and EAc. For example, the portions of the auxiliary connection electrode ACE surrounding the first emission region EAa, the portions of the auxiliary connection electrode ACE surrounding the second emission region EAb, and the portions of the auxiliary connection electrode ACE surrounding the third emission region EAc may be integrally connected.

[0196] In a plan view, the separator SPR can be disposed between the first to third transmission regions EAa, EAb, and EAc. For example, in a plan view, the separator SPR can be disposed between the first transmission region EAa and the second transmission region EAb, between the second transmission region EAb and the third transmission region EAc, and between the first transmission region EAa and the third transmission region EAc. In a plan view, the separator SPR can surround at least a portion of each of the first to third transmission regions EAa, EAb, and EAc. In embodiments, such as Figures 6 to 8 As shown in the diagram, in the plan view, the separator SPR can completely surround each of the first to third emission zones EAa, EAb and EAc.

[0197] In the display area DA, the separator SPR can separate (or disconnect) the electrode layer E2L 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, in the plan view, the second electrodes 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.

[0198] The separator SPR can define first opening regions to third opening regions OA1, OA2, and OA3, respectively, corresponding to the second electrodes E2a, E2b, and E2c. For example, in a plan view, the separator SPR can have a mesh structure surrounding the second electrodes E2a, E2b, and E2c. The second electrode E2a of the first light-emitting element LDa can be disposed in the first opening region OA1 of the separator SPR, the second electrode E2b of the second light-emitting element LDb can be disposed in the second opening region OA2 of the separator SPR, and the second electrode E2c of the third light-emitting element LDc can be disposed in the third opening region OA3 of the separator SPR. Each of the first to third opening regions OA1, OA2, and OA3 can expose a portion of the auxiliary connection electrode ACE.

[0199] In an embodiment, such as Figures 6 to 8As shown, in a plan view, the outline of the auxiliary connecting electrode ACE may correspond to the outline of the separator SPR. In an embodiment, the width of the auxiliary connecting electrode ACE may be greater than the width of the separator SPR. For example, in a plan view, the entire separator SPR may overlap with the auxiliary connecting electrode ACE. The separator SPR may overlap with the central portion of the auxiliary connecting electrode ACE in the width direction, may expose two sides of the auxiliary connecting electrode ACE in the width direction, and may not overlap with these two sides of the auxiliary connecting electrode ACE. As described later, the second electrodes E2a, E2b, and E2c may contact the two sides of the auxiliary connecting electrode ACE exposed by the separator SPR and not overlapping with the separator SPR.

[0200] In the following text, it will be referred to as Figure 8 Centered on the first unit emission region UEA1, this section describes in more detail the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc. The following description of the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc can be applied substantially equivalently or similarly to all unit emission regions.

[0201] As described above, the display device DD-1 may include first auxiliary connection patterns to third auxiliary connection patterns ACPa, ACPb, and ACPc, and an auxiliary connection electrode ACE. The first auxiliary connection pattern ACPa and the auxiliary connection electrode ACE 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 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 electrically connect the third light-emitting element LDc and the auxiliary electrode AUE. The second power voltage ELVSS (see...) Figure 2 It can 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 can be the part of the first auxiliary connection pattern ACPa that connects to the auxiliary electrode AUE. For example, the position of the first auxiliary electrode connection portion CAa can be such that it exposes the auxiliary electrode AUE and penetrates the fifth insulating layer IL5 (see...). Figure 9 The position of the contact hole CNT corresponds to that of the contact hole.

[0204] The first light-emitting connection portion CNa can be the portion of the first auxiliary connection pattern ACPa that connects to the auxiliary connection electrode ACE. For example, the first light-emitting connection portion CNa can be the portion of the first auxiliary connection pattern ACPa that is exposed by the sixth insulating layer IL6 and the pixel defining layer PDL to allow connection to the auxiliary connection electrode ACE. Accordingly, the position of the first light-emitting connection portion CNa can 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 with the first emitting region EAa. For example, in a plan view, the first light-emitting connection portion CNa can be disposed between the first emitting region EAa and the separator SPR. For example, in a plan view, the first light-emitting connection portion CNa can be disposed in the first opening region OA1.

[0205] The auxiliary connection electrode ACE can be connected to the first auxiliary connection pattern ACPa. For example, the auxiliary connection electrode ACE can contact the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa. However, this disclosure is not limited thereto, and the auxiliary connection electrode ACE may not contact (e.g., may not directly contact) the first auxiliary connection pattern ACPa. For example, the auxiliary connection electrode ACE can contact the capping layer (the capping layer contacts the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa), and the auxiliary connection electrode ACE can be 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 and the first electrode E1 may be formed substantially simultaneously 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. For example, the second electrode E2a of the first light-emitting element LDa can contact the auxiliary connection electrode ACE. The second electrode E2a of the first light-emitting element LDa can contact the side of the auxiliary connection electrode ACE that is exposed through the separator SPR and does not overlap 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 this embodiment, the second electrode E2a and the auxiliary connection electrode ACE of the first light-emitting element LDa can contact each other at a position that does not overlap with the first emitting region EAa. Accordingly, the second electrode E2a and the auxiliary electrode AUE of the first light-emitting element LDa can be electrically connected to each other through the auxiliary connection electrode ACE and the first auxiliary connection pattern ACPa without reducing the size of the first emitting region 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 the portion of the second auxiliary connection pattern ACPb connected to the auxiliary electrode AUE. The second light-emitting connection portion CNb may be the portion of the second auxiliary connection pattern ACPb connected to the auxiliary connection electrode ACE. The auxiliary connection electrode ACE can electrically connect the second auxiliary connection pattern ACPb and the second electrode E2b of the second light-emitting element LDb. Therefore, the second electrode E2b of the second light-emitting element LDb can be electrically connected to the auxiliary electrode AUE through the auxiliary connection electrode ACE and the second auxiliary connection pattern ACPb.

[0209] In a plan view, the second light-emitting connecting portion CNb may not overlap with the second emitting region EAb. For example, in a plan view, the second light-emitting connecting portion CNb may be located between the second emitting region EAb and the separator SPR. For example, in a plan view, the second light-emitting connecting portion CNb may be located in the second opening region 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 the portion of the third auxiliary connection pattern ACPc that connects to the auxiliary electrode AUE. The third light-emitting connection portion CNc may be the portion of the third auxiliary connection pattern ACPc that connects to the auxiliary connection electrode ACE. The auxiliary connection electrode ACE can electrically connect the third auxiliary connection pattern ACPc and the second electrode E2c of the third light-emitting element LDc. Therefore, the second electrode E2c of the third light-emitting element LDc can be electrically connected to the auxiliary electrode AUE through the auxiliary connection electrode ACE and the third auxiliary connection pattern ACPc.

[0211] In a plan view, the third light-emitting connecting portion CNc may not overlap with the third emitting region EAc. For example, in a plan view, the third light-emitting connecting portion CNc may be located between the third emitting region EAc and the separator SPR. For example, in a plan view, the third light-emitting connecting portion CNc may be located in the third opening region OA3.

[0212] In the following text, the cross-sectional structure of the display device DD-1 will be described in more detail with the first emission zone EAa as the focus. The following description of the cross-sectional structure of the display device DD-1 can be applied substantially equivalently to all emission zones.

[0213] like Figure 9As shown, the display device DD-1 may include a substrate SUB, a first bottom conductive layer BML1, a second bottom conductive layer BML2, a transistor TR, a first capacitor CAP1, a second capacitor CAP2, an auxiliary electrode AUE, an anode connection electrode, a first auxiliary connection pattern ACPa, first to sixth insulating layers IL1, IL2, IL3, IL4, IL5 and 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. In the following text, references to the above will be omitted or simplified. Figure 5 The description of the display device DD is repeated.

[0214] The second bottom conductive layer BML2 can be disposed on the substrate SUB. The second electrical voltage ELVSS (see...) Figure 2 It can be applied to the second bottom conductive layer BML2.

[0215] The auxiliary electrode AUE can be disposed in the display area DA, on the fourth insulating layer IL4. The auxiliary electrode AUE can contact the second bottom conductive layer BML2. A second electrical voltage can be applied to the auxiliary electrode AUE.

[0216] The second bottom conductive layer BML2 and the auxiliary electrode AUE can be electrically connected to each other. A second electrical voltage can be applied to the second bottom conductive layer BML2 and the auxiliary electrode AUE. The second bottom conductive layer BML2 and the auxiliary electrode AUE can be transmission lines for transmitting the second electrical voltage to the second electrodes E2a, E2b, and E2c. The second bottom conductive layer BML2 can be referred to as the first electrical transmission line, and the auxiliary electrode AUE can be referred to as the second electrical transmission line.

[0217] The first auxiliary connection pattern ACPa can be disposed in the display area DA, on the fifth insulating layer IL5. The first auxiliary connection pattern ACPa can be disposed between the auxiliary electrode AUE and the auxiliary connection electrode ACE. The first auxiliary connection pattern ACPa can be electrically connected to the auxiliary electrode AUE. For example, the first auxiliary connection pattern ACPa can contact the auxiliary electrode AUE through a contact hole CNT penetrating the fifth insulating layer IL5.

[0218] The sixth insulating layer IL6 may overlap with the anode connection electrode and may be disposed on the fifth insulating layer IL5. Alternatively, for example, the sixth insulating layer IL6 may partially overlap with the first auxiliary connection pattern ACPa and may 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 can be disposed on the sixth insulating layer IL6. The first electrode E1 can contact the anode connection electrode. Accordingly, the first electrode E1 can 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 PDL may define a pixel opening that exposes at least a portion of the first electrode (E1). A first emitter region (EAa) may be defined by the pixel opening.

[0221] The pixel-defining layer PDL can further define a second sub-opening SO2 corresponding to a first sub-opening SO1 of the sixth insulating layer IL6. The second sub-opening SO2 can overlap with the first sub-opening SO1 in a planar view, and the first and second sub-openings SO1 and SO2 can be spatially connected to each other. For example, the first and second sub-openings SO1 and SO2 can be connected to form an opening OP. The opening OP can expose at least a portion of the first auxiliary connection pattern ACPa.

[0222] The auxiliary connection electrode ACE can 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 can be connected to the first auxiliary connection pattern ACPa. For example, the auxiliary connection electrode ACE can be connected to the first auxiliary connection pattern ACPa through an opening OP that penetrates the sixth insulating layer IL6 and the pixel defining layer PDL. Accordingly, the position of the first light-emitting connection portion CNa can correspond to the position of the opening OP.

[0223] The auxiliary connection electrode (ACE) may include conductive materials such as metals, alloys, conductive metal oxides, conductive metal nitrides, transparent conductive oxides, or combinations thereof. In embodiments, the auxiliary connection electrode (ACE) may have a single-layer structure or a multilayer structure in which multiple conductive layers are stacked on top of each other.

[0224] In embodiments, the auxiliary connection electrode ACE may comprise a transparent conductive oxide. Examples of transparent conductive oxides that can be used as the auxiliary connection electrode ACE in embodiments include IGZO, ITZO, ITO, IZO, IGO, ZnOx, InOx, SnOx, GaOx, AZO, etc., or combinations thereof. These can be used individually or in combination with each other. However, this disclosure is not limited thereto, and the auxiliary connection electrode ACE may comprise conductive materials such as metals, alloys, conductive metal nitrides, etc., or combinations thereof.

[0225] A separator SPR can be disposed on the pixel defining layer PDL and the auxiliary connection electrode ACE. In a planar view, the separator SPR can overlap with the auxiliary connection electrode ACE. For example, the separator SPR can overlap with a portion of the auxiliary connection electrode ACE (e.g., the central portion in the width direction). For example, the lower surface of the separator SPR can contact the upper surface of the auxiliary connection electrode ACE.

[0226] The side surface of the separator SPR that connects the upper and lower surfaces of the separator SPR can be a reverse tapered slope. In other words, at least a portion of the cross-sectional shape of the separator SPR can be an inverted trapezoid.

[0227] In an embodiment, such as Figure 9 As shown, the side surface of the separator SPR can have multiple reverse tapered ramps. For example, the separator SPR can have a double reverse tapered structure. Accordingly, the electrode layer E2L can be more easily separated (or disconnected) by the separator SPR.

[0228] The intermediate layer ML can be disposed on the first electrode E1, the pixel defining layer PDL, and the auxiliary connection electrode ACE. A portion of the intermediate layer ML can be disposed in the pixel opening of the pixel defining layer PDL.

[0229] Shaded areas where it is difficult to deposit the intermediate layer ML can exist around the separator SPR with a reverse tapering slope. Accordingly, in and / or around the shaded areas, the intermediate layer ML can have a structure that is separated (or disconnected) by the separator SPR. Due to the separated (or disconnected) structure of the intermediate layer ML, such as Figure 9 As shown, the intermediate layer ML may expose a portion of the auxiliary connection electrode ACE at a location adjacent to or overlapping with the separator SPR (e.g., the side portion of the auxiliary connection electrode ACE adjacent to the separator SPR). Accordingly, the second electrode E2a of the first light-emitting element LDa may contact the auxiliary connection electrode ACE.

[0230] Electrode layer E2L can be disposed on intermediate layer ML. Shaded areas where electrode layer E2L is difficult to deposit can exist around separator SPR with a reverse tapered slope. In and / or around the shaded areas, electrode layer E2L can have a structure that is separated (or disconnected) by separator SPR. For example, electrode layer E2L can be separated (or disconnected) into a second electrode E2a of first light-emitting element LDa, a second electrode E2b of second light-emitting element LDb, and a second electrode E2c of third light-emitting element LDc.

[0231] like Figure 9As shown, electrode layer E2L (e.g., second electrode E2a) can be connected to auxiliary connection electrode ACE. For example, electrode layer E2L (e.g., second electrode E2a) can contact auxiliary connection electrode ACE at a location adjacent to or overlapping with separator SPR. For example, electrode layer E2L (e.g., second electrode E2a) can contact auxiliary connection electrode ACE in a region that overlaps with the upper part of separator SPR in a plan view. For example, if the deposition angle of the deposition process for forming electrode layer E2L is greater than the deposition angle of the deposition process for forming intermediate layer ML, electrode layer E2L (e.g., second electrode E2a) can be formed to overlap the side of the separated (or disconnected) intermediate layer ML, such that electrode layer E2L (e.g., second electrode E2a) can contact auxiliary connection electrode ACE. As a result, second electrode E2a can be connected to auxiliary electrode AUE through auxiliary connection electrode ACE and first auxiliary connection pattern ACPa. Accordingly, second electrode E2a can receive second power voltage ELVSS (see Figure 2 ).

[0232] The encapsulation layer ENC can be disposed on the electrode layer E2L. The encapsulation layer ENC can completely overlap with the electrode layer E2L, the auxiliary connection electrode ACE, the separator SPR, the first dummy layer DP1, and the second dummy layer DP2.

[0233] According to embodiments of this disclosure, the display device DD-1 may include auxiliary connection patterns ACPa, ACPb, and ACPc, an auxiliary connection electrode ACE, and a separator SPR. Accordingly, the electrode layer E2L (e.g., a cathode) can be easily connected to the auxiliary electrode AUE via the auxiliary connection electrode ACE and the auxiliary connection patterns ACPa, ACPb, and ACPc. Consequently, the electrode layer E2L can receive a second electrical voltage from the auxiliary electrode AUE, and the voltage drop (IR drop) phenomenon of the second electrical voltage supplied to the electrode layer E2L can be reduced. Therefore, the display quality of the display device DD-1 can be improved.

[0234] Figure 10 and Figure 11 This is a schematic plan view illustrating a portion of a display device according to an embodiment. Figure 12 The illustration is based on an embodiment. Figure 11 An enlarged schematic diagram of one of the unit emission regions. Figure 13 It is according to the embodiment along Figure 12 A schematic cross-sectional view taken from line III-III'.

[0235] For example, Figure 10 and Figure 11 The diagram illustrates a schematic of the four-cell transmission areas UEA1 and UEA2, arranged in a two-row, two-column matrix. Figure 12 The diagram shows an enlarged view of the first unit transmission area, UEA1, in unit transmission areas UEA1 and UEA2. Figures 10 to 13 Can be respectively with Figures 6 to 9 Correspondingly.

[0236] For ease of description, Figures 10 to 12 The text omits or emphasizes Figure 13 Some of the components shown in the diagram. For example, Figure 10 It is a schematic plan view illustrating the first auxiliary connection pattern to the third auxiliary connection pattern ACPa, ACPb and ACPc, and the first auxiliary connection electrode to the third auxiliary connection electrode ACEa, ACEb and ACEc. Figure 11 The diagram illustrates further settings. Figure 10 A schematic plan view of the separator SPR on the first auxiliary connection pattern to the third auxiliary connection pattern ACPa, ACPb and ACPc.

[0237] In addition to the auxiliary connection electrode ACE (see below) which electrically connects the auxiliary connection patterns ACPa, ACPb, and ACPc to the second electrodes E2a, E2b, and E2c, the auxiliary connection electrode ACE (see below) is used to electrically connect the auxiliary connection patterns ACPa, ACPb, and ACPc to the second electrodes E2a, E2b, and E2c. Figure 6 Apart from being separated into auxiliary connection electrodes ACEa, ACEb, and ACEc that are spaced apart from each other, according to reference Figures 10 to 13 The display device DD-2 described in the embodiment can be compared with the above reference. Figures 6 to 9 The described display device DD-1 is substantially the same as or similar to the original. Therefore, repeated descriptions will be omitted or simplified.

[0238] refer to Figures 10 to 13 The display device DD-2 according to the embodiment may include a first pixel driving circuit to a third pixel driving circuit PCa, PCb and PCc, a first light-emitting element to a third light-emitting element LDa, LDb and LDc, a first auxiliary connection pattern to a third auxiliary connection pattern ACPa, ACPb and ACPc, a first auxiliary connection electrode to a third auxiliary connection electrode ACEa, ACEb and ACEc and a separator SPR.

[0239] In a plan view, the first auxiliary connection electrode ACEa may not overlap with the first emitter region EAa. In an embodiment, in a plan view, the first auxiliary connection electrode ACEa may surround at least a portion of the first emitter region EAa. For example, as... Figure 10 As shown in the diagram, in the plan view, the first auxiliary connection electrode ACEa can have a closed-loop shape that completely surrounds the first emitter region EAa.

[0240] In a plan view, the second auxiliary connection electrode ACEb may not overlap with the second emitter region EAb. In an embodiment, in a plan view, the second auxiliary connection electrode ACEb may surround at least a portion of the second emitter region EAb. For example, as... Figure 10 As shown in the diagram, in the plan view, the second auxiliary connection electrode ACEb can have a closed-loop shape that completely surrounds the second emitter region EAb.

[0241] In a plan view, the third auxiliary connection electrode ACEc may not overlap with the third emitter region EAc. In an embodiment, in a plan view, the third auxiliary connection electrode ACEc may surround at least a portion of the third emitter region EAc. For example, as... Figure 10 As shown in the diagram, in the plan view, the third auxiliary connection electrode ACEc can have a closed-loop shape that completely surrounds the third emitter region EAc.

[0242] In the planar view, the first to third auxiliary connecting electrodes ACEa, ACEb, and ACEc can be spaced apart from each other. In other words, the first to third auxiliary connecting electrodes ACEa, ACEb, and ACEc can be physically separate different patterns. The first to third auxiliary connecting electrodes ACEa, ACEb, and ACEc can be formed in the same process. The first to third auxiliary connecting electrodes ACEa, ACEb, and ACEc can be formed substantially simultaneously and can comprise the same material.

[0243] In a plan view, the separator SPR can be disposed between the first to third transmission regions EAa, EAb, and EAc. For example, in a plan view, the separator SPR can be disposed between the first transmission region EAa and the second transmission region EAb, between the second transmission region EAb and the third transmission region EAc, and between the first transmission region EAa and the third transmission region EAc. In a plan view, the separator SPR can surround at least a portion of each of the first to third transmission regions EAa, EAb, and EAc. In embodiments, such as Figures 10 to 12 As shown in the diagram, in the plan view, the separator SPR can completely surround each of the first to third emission zones EAa, EAb and EAc.

[0244] In the display area DA, the separator SPR can separate (or disconnect) the electrode layer E2L 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, in the plan view, the second electrodes 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.

[0245] The separator SPR can define first opening regions to third opening regions OA1, OA2, and OA3, respectively, corresponding to the second electrodes E2a, E2b, and E2c. For example, in a plan view, the separator SPR can have a mesh structure surrounding the second electrodes E2a, E2b, and E2c. The second electrode E2a of the first light-emitting element LDa can be disposed in the first opening region OA1 of the separator SPR, the second electrode E2b of the second light-emitting element LDb can be disposed in the second opening region OA2 of the separator SPR, and the second electrode E2c of the third light-emitting element LDc can be disposed in the third opening region OA3 of the separator SPR. The first opening region OA1 can expose a portion of the first auxiliary connection electrode ACEa, the second opening region OA2 can expose a portion of the second auxiliary connection electrode ACEb, and the third opening region OA3 can expose a portion of the third auxiliary connection electrode ACEc.

[0246] In the plan view, the separator SPR can overlap with each portion of the first to third auxiliary connection electrodes ACEa, ACEb, and ACEc. For example, as Figures 10 to 12 As shown, the first auxiliary connection electrode ACEa may include a first side portion that is away from the first emitter region EAa in the width direction and a second side portion that is close to the first emitter region EAa in the width direction. The separator SPR may overlap with the first side portion of the first auxiliary connection electrode ACEa, may expose the second side portion of the first auxiliary connection electrode ACEa, or may not overlap with the second side portion of the first auxiliary connection electrode ACEa.

[0247] Similarly, the second auxiliary connection electrode ACEb may include a first side portion that is away from the second emitter region EAb in the width direction and a second side portion that is close to the second emitter region EAb in the width direction. The separator SPR may overlap with the first side portion of the second auxiliary connection electrode ACEb, may expose the second side portion of the second auxiliary connection electrode ACEb, or may not overlap with the second side portion of the second auxiliary connection electrode ACEb.

[0248] The third auxiliary connection electrode ACEc may include a first side portion in the width direction away from the third emitter region EAc and a second side portion in the width direction close to the third emitter region EAc. The separator SPR may overlap with the first side portion of the third auxiliary connection electrode ACEc, may expose the second side portion of the third auxiliary connection electrode ACEc, or may not overlap with the second side portion of the third auxiliary connection electrode ACEc.

[0249] As described below, the second electrodes E2a, E2b and E2c can respectively contact the second side of the first auxiliary connection electrode to the third auxiliary connection electrode ACEa, ACEb and ACEc exposed through the separator SPR and not overlap with the separator SPR.

[0250] In the following text, it will be referred to as Figure 12 Centered on the first unit emission region UEA1, this section describes in more detail the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc. The following description of the connection relationships between the first to third light-emitting elements LDa, LDb, and LDc and the first to third auxiliary connection patterns ACPa, ACPb, and ACPc can be applied substantially equivalently or similarly to all unit emission regions.

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

[0252] The first auxiliary connection electrode ACEa can be connected to the first auxiliary connection pattern ACPa. For example, the first auxiliary connection electrode ACEa can contact the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa. However, this disclosure is not limited thereto, and the first auxiliary connection electrode ACEa may not contact (e.g., may not directly contact) the first auxiliary connection pattern ACPa. For example, the first auxiliary connection electrode ACEa can contact the capping layer (the capping layer contacts the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa), and can be 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 and the first electrode E1 may be formed substantially simultaneously 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. For example, the second electrode E2a of the first light-emitting element LDa can contact the first auxiliary connection electrode ACEa. The second electrode E2a of the first light-emitting element LDa can contact the second side of the first auxiliary connection electrode ACEa exposed by the separator SPR and not overlapping with 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 this embodiment, the second electrode E2a and the first auxiliary connection electrode ACEa of the first light-emitting element LDa can contact each other at a position that does not overlap with the first emitting region EAa. Accordingly, the second electrode E2a and the auxiliary electrode AUE of the first light-emitting element LDa can be electrically connected to each other through the first auxiliary connection electrode ACEa and the first auxiliary connection pattern ACPa without reducing the size of the first emitting region EAa.

[0255] The second auxiliary connection electrode ACEb can be connected to the second auxiliary connection pattern ACPb. For example, the second auxiliary connection electrode ACEb can contact 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. For example, the second electrode E2b of the second light-emitting element LDb can contact the second auxiliary connection electrode ACEb. The second electrode E2b of the second light-emitting element LDb can contact the second side of the second auxiliary connection electrode ACEb exposed by the separator SPR and not overlapping with 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 this embodiment, the second electrode E2b and the second auxiliary connection electrode ACEb of the second light-emitting element LDb can contact each other at a position that does not overlap with the second emitting region EAb. Accordingly, the second electrode E2b of the second light-emitting element LDb and the auxiliary electrode AUE can be electrically connected to each other through the second auxiliary connection electrode ACEb and the second auxiliary connection pattern ACPb without reducing the size of the second emitting region EAb.

[0258] In an embodiment, such as Figure 13 As shown, the first auxiliary connection electrode ACEa and the second auxiliary connection electrode ACEb can be spaced apart from each other under the separator SPR.

[0259] The third auxiliary connection electrode ACEc can be connected to the third auxiliary connection pattern ACPc. For example, the third auxiliary connection electrode ACEc can contact the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc.

[0260] The second electrode E2c of the third light-emitting element LDc can be connected to the third auxiliary connection electrode ACEc. For example, the second electrode E2c of the third light-emitting element LDc can contact the third auxiliary connection electrode ACEc. The second electrode E2c of the third light-emitting element LDc can contact the second side of the third auxiliary connection electrode ACEc exposed by the separator SPR and not overlapping with 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 this embodiment, the second electrode E2c and the third auxiliary connection electrode ACEc of the third light-emitting element LDc can contact each other at a position that does not overlap with the third emitting region EAc. Accordingly, the second electrode E2c of the third light-emitting element LDc and the auxiliary electrode AUE can be electrically connected to each other through the third auxiliary connection electrode ACEc and the third auxiliary connection pattern ACPc without reducing the size of the third emitting region EAc.

[0262] According to embodiments of this disclosure, the display device DD-2 may include auxiliary connection patterns ACPa, ACPb, and ACPc, auxiliary connection electrodes ACEa, ACEb, and ACEc, and a separator SPR. Accordingly, the electrode layer E2L (e.g., a cathode) can be easily connected to the auxiliary electrode AUE via the auxiliary connection electrodes ACEa, ACEb, and ACEc and the auxiliary connection patterns ACPa, ACPb, and ACPc. Accordingly, the electrode layer E2L can receive a second electrical voltage from the auxiliary electrode AUE, and the voltage drop (IR drop) phenomenon of the second electrical voltage supplied to the electrode layer E2L can be reduced. Because the auxiliary connection electrodes ACEa, ACEb, and ACEc are separated from each other, they are more compatible with the auxiliary electrode AUE. Figures 6 to 9 Compared to the DD-1 display device, the leakage current (lateral leakage) between adjacent light-emitting elements LDa, LDb, and LDc can be reduced by using auxiliary connection electrodes ACEa, ACEb, and ACEc. Accordingly, the display quality of the DD-2 display device can be further improved.

[0263] Figure 14 and Figure 15 This is a schematic plan view illustrating a portion of a display device according to an embodiment. Figure 16 The illustration is based on an embodiment. Figure 15 An enlarged schematic diagram of one of the unit emission regions. Figure 17 It is according to the embodiment along Figure 16 A schematic cross-sectional view taken from line IV-IV'.

[0264] For example, Figure 14 and Figure 15 The diagram illustrates a schematic of the four-cell transmission areas UEA1 and UEA2, arranged in a two-row, two-column matrix. Figure 16 The diagram shows an enlarged view of the first unit transmission area, UEA1, in unit transmission areas UEA1 and UEA2. Figures 14 to 17 Can be respectively with Figures 10 to 13 Correspondingly.

[0265] For ease of description, Figures 14 to 16 The text omits or emphasizes Figure 17 Some of the components shown in the diagram. For example, Figure 14 It is a schematic plan view illustrating the first auxiliary connection pattern to the third auxiliary connection pattern ACPa, ACPb and ACPc, and the first auxiliary connection electrode to the third auxiliary connection electrode ACEa, ACEb and ACEc. Figure 15 The diagram illustrates further settings. Figure 14 A schematic plan view of the separator SPR on the first auxiliary connection pattern to the third auxiliary connection pattern ACPa, ACPb and ACPc.

[0266] Except for the first to third light-emitting connecting portions CNa, CNb, and CNc overlapping with the separator SPR in the plan view, according to the reference Figures 14 to 17 The display device DD-3 described in the embodiment can be compared with the above reference. Figures 10 to 13 The described display device DD-2 is substantially the same or similar. Therefore, repeated descriptions will be omitted or simplified.

[0267] refer to Figures 14 to 17 The display device DD-3 according to the embodiment may include a first pixel driving circuit to a third pixel driving circuit PCa, PCb and PCc, a first light-emitting element to a third light-emitting element LDa, LDb and LDc, a first auxiliary connection pattern to a third auxiliary connection pattern ACPa, ACPb and ACPc, a first auxiliary connection electrode to a third auxiliary connection electrode ACEa, ACEb and ACEc and a separator SPR.

[0268] In a plan view, the first auxiliary connection electrode ACEa may not overlap with the first emitter region EAa. In an embodiment, in a plan view, the first auxiliary connection electrode ACEa may surround at least a portion of the first emitter region EAa. For example, as... Figure 14 As shown in the diagram, in the plan view, the first auxiliary connection electrode ACEa can have a closed-loop shape that completely surrounds the first emitter region EAa.

[0269] The first auxiliary connection electrode ACEa may include a first annular portion surrounding the first emitting region EAa in the plan view and a first connection portion CNa extending from the first annular portion and connected to the first auxiliary connection pattern ACPa.

[0270] The first auxiliary connection electrode ACEa can be connected to the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa. For example... Figure 17 As shown, the first connection portion of the first auxiliary connection electrode ACEa can contact the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa through the first opening OPa, exposing the first-first sub-opening SO1a of the sixth insulating layer IL6 and the first-second sub-opening SO2a of the pixel defining layer PDL of the first auxiliary connection pattern ACPa, which are connected to the first opening OPa. The position of the first connection portion of the first auxiliary connection electrode ACEa and the position of the first light-emitting connection portion CNa of the first auxiliary connection pattern ACPa can correspond to the position of the first opening OPa.

[0271] In an embodiment, in a plan view, 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 can overlap with the separator SPR. For example, in a plan view, the first opening OPa can overlap with the separator SPR. In other words, in a plan view, the first-first sub-opening SO1a and the first-second sub-opening SO2a can overlap with the separator SPR. 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 can be located below the separator SPR. For example, in a plan view, 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 can be located outside the first opening area OA1 of the separator SPR.

[0272] In a plan view, the second auxiliary connection electrode ACEb may not overlap with the second emitter region EAb. In an embodiment, in a plan view, the second auxiliary connection electrode ACEb may surround at least a portion of the second emitter region EAb. For example, as... Figure 14 As shown in the diagram, in the plan view, the second auxiliary connection electrode ACEb can have a closed-loop shape that completely surrounds the second emitter region EAb.

[0273] The second auxiliary connection electrode ACEb may include a second annular portion surrounding the second emission region EAb in the plan view, and a second connection portion CNb extending from the second annular portion and connected to the second auxiliary connection pattern ACPb.

[0274] The second auxiliary connection electrode ACEb can be connected to the second light-emitting connection portion CNb of the second auxiliary connection pattern ACPb. For example... Figure 17 As shown, the second connection portion of the second auxiliary connection electrode ACEb can contact the second light-emitting connection portion CNb of the second auxiliary connection pattern ACPb through the second opening OPb, exposing the second-first sub-opening SO1b of the sixth insulating layer IL6 and the second-second sub-opening SO2b of the pixel defining layer PDL of the second auxiliary connection pattern ACPb, which are connected to the second opening OPb. The position of the second connection portion of the second auxiliary connection electrode ACEb and the position of the second light-emitting connection portion CNb of the second auxiliary connection pattern ACPb can correspond to the position of the second opening OPb.

[0275] In an embodiment, in a plan view, 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 overlap with the separator SPR. For example, in a plan view, the second opening OPb may overlap with the separator SPR. In other words, in a plan view, the second-first sub-opening SO1b and the second-second sub-opening SO2b may overlap with the separator SPR. 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 located below the separator SPR. For example, in a plan view, 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 located outside the second opening area OA2 of the separator SPR.

[0276] In a plan view, the third auxiliary connection electrode ACEc may not overlap with the third emitter region EAc. In an embodiment, in a plan view, the third auxiliary connection electrode ACEc may surround at least a portion of the third emitter region EAc. For example, as... Figure 14 As shown in the diagram, in the plan view, the third auxiliary connection electrode ACEc can have a closed-loop shape that completely surrounds the third emitter region EAc.

[0277] The third auxiliary connection electrode ACEc may include a third annular portion surrounding the third emission region EAc in the plan view, and a third light-emitting connection portion CNc extending from the third annular portion and connected to the third auxiliary connection pattern ACPc.

[0278] The third auxiliary connection electrode ACEc can be connected to the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc. For example... Figure 17As shown, the third connection portion of the third auxiliary connection electrode ACEc can contact the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc through the third opening OPc, exposing the third-first sub-opening SO1c of the sixth insulating layer IL6 and the third-second sub-opening SO2c of the pixel defining layer PDL of the third auxiliary connection pattern ACPc, which are connected to the third opening OPc. The position of the third connection portion of the third auxiliary connection electrode ACEc and the position of the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc can correspond to the position of the third opening OPc.

[0279] In an embodiment, in a plan view, each of the third connection portion of the third auxiliary connection electrode ACEc and the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc may overlap with the separator SPR. For example, in a plan view, the third opening OPc may overlap with the separator SPR. In other words, in a plan view, the third-first sub-opening SO1c and the third-second sub-opening SO2c may overlap with the separator SPR. Each of the third connection portion of the third auxiliary connection electrode ACEc and the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc may be located below the separator SPR. For example, in a plan view, each of the third connection portion of the third auxiliary connection electrode ACEc and the third light-emitting connection portion CNc of the third auxiliary connection pattern ACPc may be located outside the third opening area OA3 of the separator SPR.

[0280] according to Figures 14 to 17 In the display device DD-3, the light-emitting connecting portions CNa, CNb, and CNc can overlap with the separator SPR in a plan view. For example, in a plan view, the light-emitting connecting portions CNa, CNb, and CNc can be located outside the opening regions OA1, OA2, and OA3, and can not overlap with the emitting regions EAa, EAb, and EAc. Accordingly, the design limitations of each of the first to third emitting regions EAa, EAb, and EAc caused by the light-emitting connecting portions CNa, CNb, and CNc can be reduced. Therefore, the design freedom of each of the first to third emitting regions EAa, EAb, and EAc can be increased, and the size (i.e., aperture ratio) of each of the first to third emitting regions EAa, EAb, and EAc can be further increased.

[0281] Figure 18 This is a schematic plan view illustrating a display device according to an embodiment. Figure 19 It is according to the embodiment along Figure 18 A schematic cross-sectional view of the line V-V'.

[0282] Except for omitting the auxiliary electrode AUE (see Figure 9) and auxiliary connection patterns (e.g., auxiliary connection pattern ACPa, see Figure 9 Furthermore, the display device DD-4 further includes a voltage transmission electrode VTE that electrically connects the second power line VSL2 and the auxiliary connection electrode ACE, according to reference... Figure 18 and Figure 19 The display device DD-4 of the described embodiment can be used with reference to Figures 6 to 9 The described display device DD-1 is substantially the same as or similar to the original. Therefore, repeated descriptions will be omitted or simplified.

[0283] refer to Figure 18 According to the embodiment, the display device DD-4 can be a device activated by an electrical signal. For example, such as... Figure 18 As shown, the display device DD-4 can be a small display device used in small electronic devices such as smartphones, mobile phones, smartwatches, game consoles, cameras, or combinations thereof. However, this disclosure is not limited thereto, and the display device DD-4 can also be a medium to large-sized display device used in medium to large-sized electronic devices such as laptop computers, tablet computers, televisions, computer monitors, vehicle monitors, or external billboards.

[0284] The display device DD-4 may include a substrate SUB, pixels PX, gate lines GL, data lines DL, a data driver DDV, a gate driver GDV, a power line PL, a first power line VSL1, and a second power line VSL2. The substrate SUB, pixels PX, gate lines GL, data lines DL, data driver DDV, gate driver GDV, power line PL, first power line VSL1, and second power line VSL2 may be as described above. Figure 1a and Figure 1b The components described are essentially the same or similar. Therefore, repeated descriptions will be omitted or simplified.

[0285] Further reference Figure 19 The display device DD-4 may include a substrate SUB, a first bottom conductive layer BML1, a transistor TR, first to sixth insulating layers IL1, IL2, IL3, IL4, IL5 and IL6, a pixel defining layer PDL, a light-emitting element LD, a second power line VSL2, an auxiliary connection electrode ACE, a voltage transmission electrode VTE, a separator SPR, a first dummy layer DP1, a second dummy layer DP2, and a packaging layer ENC. In the following text, references to the above will be omitted or simplified. Figure 9 The description of the display device DD-1 is repeated.

[0286] The second power line VSL2 can be located in the peripheral area NDA. The second power line VSL2 can receive the second power voltage ELVSS (see...). Figure 2 For example, such as Figure 18 As shown, the second power line VSL2 may extend along at least a portion of the edge of the display area DA.

[0287] In an embodiment, such as Figure 19 As shown, the second power line VSL2 may include a first layer VSL2a and a second layer VSL2b. The first layer VSL2a and the second layer VSL2b may be in different layers. The second layer VSL2b may be disposed on the first layer VSL2a, and an insulating layer may be disposed between the first layer VSL2a and the second layer VSL2b. The second layer VSL2b may contact the first layer VSL2a through contact holes that expose a portion of the first layer VSL2a and penetrate the insulating layer. Accordingly, the first layer VSL2a and the second layer VSL2b may be electrically connected to each other.

[0288] In an embodiment, such as Figure 19 As shown, the first layer VSL2a can be disposed between the fourth insulating layer IL4 and the fifth insulating layer IL5, and the second layer VSL2b can be disposed between the fifth insulating layer IL5 and the sixth insulating layer IL6.

[0289] For example, the first layer VSL2a, the first contact electrode SE, and the second contact electrode DE can be in the same layer. The first contact electrode SE, the second contact electrode DE, and the first layer VSL2a can be formed in the same process. The first contact electrode SE, the second contact electrode DE, and the first layer VSL2a can be formed substantially simultaneously and can comprise the same material.

[0290] For example, the second layer VSL2b and 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 can be in the same layer. The anode connection electrode and the second layer VSL2a can be formed in the same process. The anode connection electrode and the second layer VSL2a can be formed substantially simultaneously and can comprise the same material. However, this disclosure is not limited thereto, and the number and arrangement of the layers included in the second power line VSL2 can be varied according to embodiments of this disclosure. For example, the first layer VSL2a can be omitted.

[0291] The auxiliary connection electrode ACE can be disposed in the display area DA. In a plan view, the auxiliary connection electrode ACE may not overlap with each of the emitter areas EA. In a plan view, the auxiliary connection electrode ACE can be disposed between adjacent emitter areas EA. In an embodiment, throughout the display area DA, in a plan view, the auxiliary connection electrode ACE can have a mesh structure surrounding each of the emitter areas EA.

[0292] The spacer SPR can be disposed on the auxiliary connection electrode ACE. In a plan view, the spacer SPR may not overlap with each of the emitter regions EA. In a plan view, the spacer SPR may be disposed between adjacent emitter regions EA. In an embodiment, throughout the display area DA, in a plan view, the spacer SPR may have a mesh structure surrounding each of the emitter regions EA.

[0293] In an embodiment, in a plan view, the outline of the auxiliary connecting electrode ACE may correspond to the outline of the separator SPR. In an embodiment, the width of the auxiliary connecting electrode ACE may be greater than the width of the separator SPR. For example, in a plan view, the entire separator SPR may overlap with the auxiliary connecting electrode ACE. The separator SPR may overlap with the central portion of the auxiliary connecting electrode ACE in the width direction, may expose two sides of the auxiliary connecting electrode ACE in the width direction, and may not overlap with these two sides of the auxiliary connecting electrode ACE. In the display area DA, the second electrodes E2a, E2b, and E2c may contact the two sides of the auxiliary connecting electrode ACE exposed by the separator SPR and not overlapping with the separator SPR.

[0294] For example, Figure 19 The auxiliary connecting electrode ACE, the separator SPR, and the second electrodes E2a, E2b, and E2c can be respectively connected to the reference above. Figures 6 to 8 The auxiliary connecting electrode ACE, the separator SPR, and the second electrodes E2a, E2b, and E2c described have substantially the same planar shape.

[0295] The separator SPR can separate (or disconnect) the electrode layer E2L into second electrodes E2a, E2b, and E2c, and a voltage transmission electrode VTE. For example, in the display area DA, the separator SPR can separate (or disconnect) the electrode layer E2L into second electrodes E2a, E2b, and E2c 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, and E2c disposed in the display area DA, and a voltage transmission electrode VTE disposed in the peripheral area NDA. In a plan view, the second electrodes E2a, E2b, and E2c and the voltage transmission electrode VTE can be spaced apart from each other.

[0296] The voltage transfer electrode VTE can be disposed in the peripheral area NDA. The voltage transfer electrode VTE can be connected to each of the auxiliary connection electrode ACE and the second power line VSL. The voltage transfer electrode VTE can electrically connect the auxiliary connection electrode ACE and the second power line VSL to each other. Accordingly, the second power voltage can be transmitted to the second electrodes E2a, E2b, and E2c of the light-emitting element LD through the second power line VSL, the voltage transfer electrode VTE, and the auxiliary connection electrode ACE.

[0297] In an embodiment, the voltage transfer electrode VTE can be disposed on the pixel defining layer PDL. For example, the voltage transfer electrode VTE and the second electrodes E2a, E2b, and E2c of the light-emitting element LD can be in the same layer. The voltage transfer electrode VTE and the second electrodes E2a, E2b, and E2c can be formed in the same process. The voltage transfer electrode VTE and the second electrodes E2a, E2b, and E2c can be formed substantially simultaneously and can comprise the same material. However, this disclosure is not limited thereto.

[0298] like Figure 18 As shown in the plan view, the driver (e.g., gate driver GDV and / or emitter driver) can be positioned between the second power line VSL2 and the display area DA. For example, the circuit elements constituting the driver can be formed using various conductive layers between the substrate SUB and the pixel defining layer PDL. When the voltage transfer electrode VTE and the second electrodes E2a, E2b, and E2c of the light-emitting element LD are in the same layer, the driver's circuit elements can be located below the voltage transfer electrode VTE. For example, the voltage transfer electrode VTE and the driver's circuit elements can overlap in the plan view. Accordingly, the design freedom of the driver can be increased, and the peripheral area NDA of the display device DD-4 can be further reduced.

[0299] The voltage transmission electrode VTE may include a power line connection portion VCa and an auxiliary connection electrode connection portion VCb.

[0300] The power line connection portion VCa can be the part of the voltage transmission electrode VTE that connects to the second power line VSL2. For example, the power line connection portion VCa can be connected to the second layer VSL2b of the second power line VSL2. Figure 19 As shown, the power line connection portion VCa can contact the second layer VSL2b through the opening OP, exposing the first sub-opening SO1 of the sixth insulating layer IL6 of the second layer VSL2b and the second sub-opening SO2 of the pixel defining layer PDL, which are connected to the opening OP.

[0301] The auxiliary connection electrode connection portion VCb can be the part of the voltage transmission electrode VTE that connects to the auxiliary connection electrode ACE. For example, the auxiliary connection electrode connection portion VCb can be connected to the edge portion ACE-e of the auxiliary connection electrode ACE located at the boundary between the display area DA and the peripheral area NDA.

[0302] like Figure 19 As shown, the edge portion ACE-e of the auxiliary connection electrode ACE can 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 can be the portion of the auxiliary connection electrode ACE with a mesh structure throughout the display area DA that is closest to the peripheral area NDA (e.g., the outermost edge portion in a plan view). For example, a portion of the edge portion ACE-e of the auxiliary connection electrode ACE can be located in the display area DA, and another portion of the edge portion ACE-e of the auxiliary connection electrode ACE can be located in the peripheral area NDA.

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

[0304] In the plan view, the edge portion SPR-e of the separator SPR can overlap with the edge portion ACE-e of the auxiliary connecting electrode ACE. The edge portion SPR-e of the separator SPR can be disposed 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 can be greater than the width of the edge portion SPR-e of the separator SPR.

[0305] The edge portion of the auxiliary connection electrode ACE, ACE-e, may be included in the width direction (e.g., Figure 19 The second direction DR2) is located on the first side of the display area DA (e.g., Figure 19 The right side of the middle), and the second side of the outer perimeter NDA in the width direction (e.g., Figure 19 The left side of the middle section and the central section between the first and second sides.

[0306] The edge portion SPR-e of the separator SPR can overlap with the central portion of the edge portion ACE-e of the auxiliary connection electrode ACE, can expose the first and second sides of the edge portion ACE-e of the auxiliary connection electrode ACE, and can not overlap with the first and second sides of the edge portion ACE-e of the auxiliary connection electrode ACE.

[0307] The second electrodes E2a, E2b, and E2c of the light-emitting element LD can contact the first side of the auxiliary connection electrode ACE-e, which is exposed through the edge portion SPR-e of the separator SPR and does not overlap with the edge portion SPR-e of the separator SPR. The auxiliary connection electrode connection portion VCb of the voltage transmission electrode VTE can contact the second side of the auxiliary connection electrode ACE-e, which is exposed through the edge portion SPR-e of the separator SPR and does not overlap with the edge portion SPR-e of the separator SPR.

[0308] In an embodiment, such as Figure 19 As shown, the side surface of the edge portion SPR-e of the separator SPR can have multiple reverse tapered slopes. For example, the edge portion SPR-e of the separator SPR can have a double reverse tapered structure.

[0309] The shadowed areas where it is difficult to deposit the electrode layer E2L can exist around the edge portion SPR-e of the separator SPR with a reverse tapered slope. Accordingly, in and / or around the shadowed areas, the electrode layer E2L can have a structure that is separated (or disconnected) by the edge portion SPR-e of the separator SPR. For example, the electrode layer E2L can be separated (or disconnected) by the edge portion SPR-e of the separator SPR into the second electrodes E2a, E2b, and E2c of the light-emitting element LD disposed in the display area DA and the voltage transmission electrode VTE disposed in the peripheral area NDA.

[0310] In the display area DA, the second electrodes E2a, E2b, and E2c may contact the first side of the edge portion ACE-e of the auxiliary connection electrode ACE at a position adjacent to or overlapping with the edge portion SPR-e of the separator SPR. For example, in the display area DA, the second electrodes E2a, E2b, and E2c may contact the first side of the edge portion ACE-e of the auxiliary connection electrode ACE at a region that overlaps with the upper part of the edge portion SPR-e of the separator SPR in the plan view.

[0311] In the peripheral NDA, the auxiliary connection electrode connection portion VCb may contact the second side of the edge portion ACE-e of the auxiliary connection electrode ACE at a position adjacent to or overlapping with the edge portion SPR-e of the separator SPR. For example, in the peripheral NDA, the auxiliary connection electrode connection portion VCb may contact the second side of the edge portion ACE-e of the auxiliary connection electrode ACE in a region that overlaps with the upper part of the edge portion SPR-e of the separator SPR in a plan view.

[0312] For example, if the deposition angle of the deposition process used to form the electrode layer E2L is greater than the deposition angle of the deposition process used to form the intermediate layer ML, the electrode layer E2L (e.g., the second electrode E2a) can be formed to overlap with the separated (or disconnected) intermediate layer ML and contact the auxiliary connection electrode ACE. For example, the electrode layer E2L can be formed to overlap with the separated (or disconnected) intermediate layer ML and contact the first side of the edge portion ACE-e of the auxiliary connection electrode ACE, and the voltage transmission electrode VTE can be formed to overlap with the separated (or disconnected) intermediate layer ML and contact the second side of the edge portion ACE-e of the auxiliary connection electrode ACE. As a result, the second electrodes E2a, E2b, and E2c can be connected to the second power line VSL2 through the edge portion ACE-e of the auxiliary connection electrode ACE and the voltage transmission electrode VTE. Accordingly, the second electrodes E2a, E2b, and E2c can receive the second power voltage ELVSS (see...). Figure 2 The auxiliary connection electrode ACE can have a mesh structure throughout the entire display area DA, and the second electrodes E2a, E2b, and E2c of all light-emitting elements LD in the display area DA can contact the auxiliary connection electrode ACE. Accordingly, all the second electrodes E2a, E2b, and E2c in the display area DA can receive a second electrical voltage through the auxiliary connection electrode ACE.

[0313] according to Figure 18 and Figure 19 In the display device DD-4, the second electrodes E2a, E2b, and E2c of the light-emitting element LD can be easily electrically connected to the second power line VSL2 disposed in the peripheral area NDA via the auxiliary connection electrode ACE and the voltage transmission electrode VTE. For example, other electrodes and / or lines (e.g., cathodes) for transmitting the second power voltage to the second electrodes E2a, E2b, and E2c can also be used. Figure 9 The auxiliary electrode AUE and the second bottom conductive layer BML2 may not be located in the display area DA. As a result, the design freedom of the display area DA and each of the first to third emission areas EAa, EAb and EAC included in the display area DA can be increased, and the size (i.e., aperture ratio) of each of the first to third emission areas EAa, EAb and EAC can be further increased.

[0314] Figure 20 This is a schematic block diagram illustrating an electronic device according to an embodiment.

[0315] refer to Figure 20 In this embodiment, the electronic device 900 may include a processor 910, a memory device 920, a storage device 930, an input / output (“I / O”) device 940, a power supply 950, and a display device 960. Here, the display device 960 may correspond to one of the aforementioned display devices DD-1, DD-2, DD-3, and DD-4. The electronic device 900 may further include multiple ports for communicating with devices such as video cards, sound cards, memory cards, or Universal Serial Bus (“USB”) devices.

[0316] Processor 910 can perform various computing functions or tasks. In embodiments, processor 910 may be a microprocessor, a central processing unit (“CPU”), or an application processor (“AP”), etc. Processor 910 may be electrically connected to other components via address buses, control buses, or data buses, etc. In embodiments, processor 910 may be electrically connected to an expansion bus such as a peripheral component interconnect (“PCI”) bus.

[0317] The memory device 920 may store data for the operation of the electronic device 900. In embodiments, the memory device 920 may include at least one 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 resistive 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, or a ferroelectric random access memory (“FRAM”) device, and / or at least one volatile memory device such as a dynamic random access memory (“DRAM”) device, a static random access memory (“SRAM”) device, or a mobile DRAM device.

[0318] In an embodiment, storage device 930 may include a solid-state drive (“SSD”) device, a hard disk drive (“HDD”) device, or a CD-ROM device, etc. In an embodiment, I / O device 940 may include input devices such as a keyboard, keypad, mouse device, touchpad, or touch screen, and output devices such as a printer or speaker.

[0319] Power supply 950 can provide power for the operation of electronic device 900. Display device 960 can be electrically connected to other components via a bus or other communication link. In an embodiment, display device 960 may be included in I / O device 940.

[0320] Figure 21 It is shown in the diagram. Figure 20 A schematic diagram illustrating an example of an electronic device implemented as a smartphone. Figure 22 yes Figure 21 An exploded schematic plan view of an electronic device.

[0321] refer to Figure 21 In this embodiment, the electronic device 900 can be implemented as a smartphone. However, the electronic device 900 is not limited to this, and for example, it can be implemented as a television, mobile phone, video phone, smart tablet, smartwatch, tablet PC, vehicle navigation device, computer monitor, laptop computer, head-mounted display (“HMD”), or kiosk, etc. Reference will be made below to… Figure 21 and Figure 22 An embodiment in which the electronic device 900 is implemented as a smartphone is described in more detail.

[0322] refer to Figure 21 and Figure 22 In one embodiment, the 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 appearance of the electronic device 900.

[0323] Display device 960 can display an image. Display device 960 may include a display area DA for displaying the image and a peripheral area NDA surrounding the display area DA. Pixels PX for generating the image may be disposed in the display area DA. A driver (e.g., a data driver DDV) for driving the pixels PX may be disposed in the peripheral area NDA. Display device 960 may correspond to one of the aforementioned display devices DD, DD-1, DD-2, DD-3, and DD-4.

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

[0325] The housing HM can be integrated with the window WU. The housing HM can be integrated with the window WU to provide internal space. The display device 960 can be housed within the internal space provided between the housing HM and the window WU. Various components such as optical films, buffer layers, heating layers, processors, memory devices, storage devices, I / O devices, or power supplies can be further housed within the internal space. The housing HM can comprise a material with high rigidity. The housing HM can stably protect the components housed within the internal space from external impacts. Industrial applicability

[0326] The embodiments of this disclosure can be applied to various display devices. For example, the embodiments of this disclosure can be applied to various display devices such as display devices for vehicles, ships and aircraft, portable communication devices, display devices for exhibitions or information transmission, and medical display devices.

[0327] Although the invention has been specifically shown and described with reference to embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit or scope of the invention as defined by the following claims.

Claims

1. A display device, comprising: The substrate includes a display area and a peripheral area disposed around the display area; A power cord is located in the peripheral area and supplies a low power voltage; Multiple first electrodes are disposed in the display area and supplied with high power voltage; A pixel defining layer is disposed on the plurality of first electrodes and exposes a portion of each of the plurality of first electrodes to define an emission region; An auxiliary connection electrode is disposed on the pixel defining layer and electrically connected to the power line; An electrode layer is disposed on the plurality of first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with the low power voltage; as well as A separator is disposed on the auxiliary connection electrode, overlaps a portion of the auxiliary connection electrode, and separates the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

2. The display device according to claim 1, further comprising: An auxiliary electrode is disposed in the display area and electrically connected to the power line; as well as An auxiliary connection pattern is disposed between the auxiliary electrode and the auxiliary connection electrode. The auxiliary connection pattern includes an auxiliary electrode connection portion connected to the auxiliary electrode and a light-emitting connection portion connected to the auxiliary connection electrode.

3. The display device according to claim 2, wherein, In the plan view, the light-emitting connection portion is disposed between the emitting area and the separator.

4. The display device according to claim 2, wherein, In the plan view, the light-emitting connection portion overlaps with the separator.

5. The display device according to claim 1, wherein, The pixel-defining layer defines a first emission region, a second emission region, and a third emission region that emit light of different colors, and The plurality of second electrodes, spaced apart from each other by the separator, overlap with the first emission region, the second emission region, and the third emission region, respectively.

6. The display device according to claim 5, wherein, In the plan view, the separator has a mesh structure surrounding each of the plurality of second electrodes.

7. The display device according to claim 5, wherein, In the plan view, the auxiliary connection electrode has a mesh structure surrounding each of the first, second, and third emission regions.

8. The display device according to claim 7, wherein, In the plan view, the outline of the auxiliary connecting electrode corresponds to the outline of the separator.

9. The display device according to claim 8, wherein, In the plan view, the width of the auxiliary connecting electrode is greater than the width of the separator.

10. The display device according to claim 9, wherein, The separator overlaps with the central portion of the auxiliary connection electrode in the width direction and exposes the two sides of the auxiliary connection electrode in the width direction. In the display area, the plurality of second electrodes contact the two sides of the auxiliary connection electrode exposed through the separator.

11. The display device according to claim 7, further comprising: A voltage transmission electrode is disposed on the power line, the voltage transmission electrode including a power line connection portion connected to the power line and an auxiliary connection electrode connection portion connected to the auxiliary connection electrode.

12. The display device according to claim 11, wherein, The voltage transmission electrode and the plurality of second electrodes are disposed in the same layer, and At the boundary between the display area and the peripheral area, the separator separates the electrode layer into the plurality of second electrodes disposed in the display area and the voltage transmission electrode disposed in the peripheral area.

13. The display device according to claim 11, wherein, The edge portion of the separator is located at the boundary between the display area and the peripheral area. The edge portion of the auxiliary connection electrode is disposed at the boundary between the display area and the peripheral area, and includes a first side portion disposed in the display area in the width direction, a second side portion disposed in the peripheral area in the width direction, and a central portion disposed between the first side portion and the second side portion. The edge portion of the separator overlaps with the central portion of the auxiliary connection electrode. The separator exposes each of the first and second sides of the auxiliary connection electrode, and In the peripheral region, the auxiliary connection electrode connection portion of the voltage transmission electrode contacts the second side of the auxiliary connection electrode exposed through the edge portion of the separator.

14. The display device according to claim 13, wherein, In the display area, the plurality of second electrodes contact the first side of the auxiliary connection electrode exposed by the edge portion of the separator.

15. The display device according to claim 5, wherein, The auxiliary connection electrodes include a first auxiliary connection electrode, a second auxiliary connection electrode, and a third auxiliary connection electrode, which are respectively surrounding the first emission region, the second emission region, and the third emission region in a plan view.

16. The display device according to claim 15, wherein, In the plan view, the first auxiliary connection electrode, the second auxiliary connection electrode, and the third auxiliary connection electrode are spaced apart from each other.

17. The display device according to claim 15, wherein, In the plan view, each of the first auxiliary connection electrode, the second auxiliary connection electrode, and the third auxiliary connection electrode has a closed-loop shape.

18. The display device according to claim 15, wherein, The first auxiliary connection electrode includes a first side portion in the width direction away from the first emission region and a second side portion in the width direction close to the first emission region. The separator overlaps with the first side of the first auxiliary connection electrode and exposes the second side of the first auxiliary connection electrode. In the display area, one of the plurality of second electrodes that overlaps with the first emission area contacts the second side of the first auxiliary connection electrode exposed through the separator.

19. A display device, comprising: The substrate includes a display area and a peripheral area disposed around the display area; A power cord is located in the peripheral area and supplies a low power voltage; An auxiliary electrode is disposed in the display area and electrically connected to the power line; An auxiliary connection pattern is disposed on the auxiliary electrode, electrically connected to the auxiliary electrode, and includes a first conductive layer and a second conductive layer stacked sequentially on top of each other, the auxiliary connection pattern having a tip portion defined by a portion of the second conductive layer protruding from the first conductive layer; Multiple first electrodes are disposed in the display area and supplied with high power voltage; A pixel defining layer is disposed on the auxiliary connection pattern and the plurality of first electrodes, and exposes a portion of each of the plurality of first electrodes to define an emission region; An electrode layer is disposed on the auxiliary connection pattern and the plurality of first electrodes, electrically connected to the auxiliary connection pattern, and supplied with the low power voltage; as well as A separator is disposed on the pixel defining layer and separates the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

20. An electronic device comprising: window; The outer shell, combined with the window, provides interior space; as well as A display device, housed within the internal space provided between the housing and the window, the display device comprising: The substrate includes a display area and a peripheral area disposed around the display area; A power cord is located in the peripheral area and supplies a low power voltage; Multiple first electrodes are disposed in the display area and supplied with high power voltage; A pixel defining layer is disposed on the plurality of first electrodes and exposes a portion of each of the plurality of first electrodes to define an emission region; An auxiliary connection electrode is disposed on the pixel defining layer and electrically connected to the power line; An electrode layer, disposed on the plurality of first electrodes and the auxiliary connection electrode, electrically connected to the auxiliary connection electrode, and supplied with the low power voltage; and A separator is disposed on the auxiliary connection electrode, overlaps a portion of the auxiliary connection electrode, and separates the electrode layer into a plurality of second electrodes spaced apart from each other in the display area.

Images