Display device

Abstract

Disclosed is a display device having a display region and a non-display region, the display device including: a substrate; a plurality of light emitting elements on the substrate; a cover frame disposed on the substrate and made of an opaque material; and a cover layer arranged to overlap the plurality of light emitting elements with the cover frame and including a plurality of cover openings. The plurality of light emitting elements are arranged at different intervals, and the plurality of cover openings are arranged at equal intervals.

Description

Technical Field

[0001] One or more embodiments of this disclosure relate to display devices, and more specifically, to flexible display devices. Background Technology

[0002] Display devices can visually display electrical signals. Various display devices with excellent characteristics such as thinness, light weight, and low power consumption have been introduced. For example, flexible display devices that can be bent, folded, or rolled into a roll have been introduced. Recently, display devices with various structures, such as stretchable display devices that can be transformed into various forms, are being researched.

[0003] The information disclosed in this background section is intended to enhance the understanding of the background of this disclosure, and therefore may contain information that does not constitute prior art. Summary of the Invention Technical issues

[0004] One or more embodiments of this disclosure may relate to display devices, such as flexible display devices. Solution to the problem

[0005] According to one or more embodiments of this disclosure, a display device including a display area and a non-display area includes: a substrate; a plurality of light-emitting elements on the substrate; and a cover layer including: a cover frame on the substrate and comprising an opaque material; and a plurality of cover openings in the cover frame to overlap with the plurality of light-emitting elements. The plurality of light-emitting elements are positioned at different intervals, and the plurality of cover openings are positioned at equal intervals.

[0006] In some embodiments, the plurality of cover openings may be positioned symmetrically about a first center line and a second center line, the first center line being a virtual center line passing through the center of the display area in a first direction, and the second center line being a virtual center line passing through the center of the display area in a second direction intersecting the first direction.

[0007] In some embodiments, the plurality of light-emitting elements may include: a plurality of first light-emitting elements positioned along a first center line; and a plurality of second light-emitting elements spaced apart from the first center line in a second direction and positioned along a first line, the first line being a virtual line protruding in the second direction.

[0008] In some embodiments, the distance between the first centerline and the first line may gradually decrease along the first direction based on the second centerline.

[0009] In some embodiments, the plurality of light-emitting elements may further include a plurality of third light-emitting elements positioned along a second line, the second line being a virtual line symmetrical to the first line based on a first center line.

[0010] In some embodiments, the modulus of the cover frame may be less than the modulus of the substrate.

[0011] In some embodiments, in a plan view, the size of each of the plurality of cover openings may be larger than the size of each of the plurality of light-emitting elements.

[0012] In some embodiments, the cover layer may further include a support portion supporting the cover frame from the substrate.

[0013] In some embodiments, the support portion may include multiple support portions, and at least one of the multiple support portions may be located in the display area.

[0014] In some embodiments, the cover frame may include at least one of thermoplastic polyurethane (TPU), thermoplastic polyethylene (TPE), and silicone rubber.

[0015] According to one or more embodiments of this disclosure, a display device configured to switch between a first structure and a second structure extending from the first structure includes: a substrate; a plurality of light-emitting elements on the substrate; and a cover layer including: a cover frame on the substrate and comprising an opaque material; and a plurality of cover openings located in the cover frame to overlap with the plurality of light-emitting elements. In the second structure, the distance between the plurality of light-emitting elements is uniform compared to the distance between the plurality of light-emitting elements in the first structure.

[0016] In some embodiments, the plurality of light-emitting elements may include: a plurality of first light-emitting elements positioned on a line along a first center line, the first center line being a virtual center line extending in a first direction; and a plurality of second light-emitting elements spaced apart from the first center line and positioned on a line along a first line in a second direction intersecting the first direction, the first line being a virtual line protruding in the second direction.

[0017] In some embodiments, the curvature of the first line in the second structure may be reduced compared to the curvature of the first line in the first structure.

[0018] In some embodiments, the distance between the first center line and the first line in the second structure can be reduced compared to the distance between the first center line and the first line in the first structure.

[0019] In some embodiments, the plurality of light-emitting elements may further include a plurality of third light-emitting elements positioned along a second line, the second line being a virtual line symmetrical to the first line based on a first center line.

[0020] In some embodiments, the modulus of the cover frame may be less than the modulus of the substrate.

[0021] In some embodiments, in a plan view, the size of each of the plurality of cover openings may be larger than the size of each of the plurality of light-emitting elements.

[0022] In some embodiments, the cover layer may further include a support portion supporting the cover frame from the substrate.

[0023] In some embodiments, the support portion may include a plurality of support portions spaced apart from each other.

[0024] In some embodiments, the cover frame may include at least one of thermoplastic polyurethane (TPU), thermoplastic polyethylene (TPE), and silicone rubber.

[0025] However, this disclosure is not limited to the foregoing aspects and features, and the foregoing and additional aspects and features will be set forth in part in the following detailed description with reference to the accompanying drawings and will become apparent in part from the following detailed description with reference to the accompanying drawings, or may be learned by practice of one or more of the embodiments of this disclosure presented. Beneficial effects of the invention

[0026] According to some of the embodiments described above, a display device with improved visibility and durability can be provided.

[0027] The above effects are illustrative only, and the scope of this disclosure is not limited thereto. Attached Figure Description

[0028] Figure 1 This is a perspective view schematically showing a display device according to an embodiment.

[0029] Figure 2a and Figure 2b It is shown that Figure 1 A perspective view of the display device in a stretched state in the first direction.

[0030] Figure 2c It is shown that Figure 1 A perspective view of the display device in a state where it is stretched in the second direction.

[0031] Figure 2d It is shown that Figure 1 A perspective view of the display device in a state where it is elongated in the first and second directions.

[0032] Figure 2e It is shown that Figure 1 A perspective view of the display device stretched upwards from a third-party perspective.

[0033] Figure 3 This is a schematic plan view of a display device according to an embodiment.

[0034] Figure 4a This is a schematic plan view of a display device according to an embodiment.

[0035] Figure 4b This is a schematic cross-sectional view of a display device according to an embodiment.

[0036] Figure 5a This is a schematic plan view of a display device according to an embodiment.

[0037] Figure 5b This is a schematic cross-sectional view of a display device according to an embodiment.

[0038] Figure 6 This is a schematic plan view of a display device according to an embodiment.

[0039] Figures 7a to 7c It is an equivalent circuit diagram of a sub-pixel of a display device according to one or more embodiments.

[0040] Figure 8a This is a schematic plan view of a display device according to an embodiment.

[0041] Figure 8b This is a schematic cross-sectional view of a display device according to an embodiment.

[0042] Figures 9a to 9g This is a perspective view schematically illustrating various electronic devices including a display device according to one or more embodiments. Detailed Implementation

[0043] Because various modifications and embodiments are possible, specific embodiments are shown in the accompanying drawings and described in detail in the detailed description. The effects and features of this disclosure, as well as methods of implementing them, will become apparent from the embodiments described in detail below in conjunction with the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed herein, but can be implemented in various forms.

[0044] In the following description, embodiments will be described in detail with reference to the accompanying drawings, and identical or corresponding parts will be indicated by the same reference numerals and redundant explanations of them will be omitted.

[0045] In the following embodiments, the terms "first," "second," etc., are used for the purpose of distinguishing one element from other elements, and are not intended to be limiting.

[0046] In the following embodiments, singular expressions include plural expressions unless the context is clearly different.

[0047] In the following embodiments, terms such as “comprising” or “having” refer to the presence of features or elements described in the specification, and do not preclude the possibility of adding one or more other features or elements.

[0048] In the following embodiments, when a portion such as a layer, area, or element is on other portions, this includes not only the case where the portion is directly on the other portion, but also the case where other elements are located between the portion and the other portion.

[0049] In the accompanying drawings, the dimensions of elements may be exaggerated or reduced for ease of interpretation. For example, since the dimensions and thicknesses of each component shown in the drawings are arbitrarily depicted for ease of interpretation, this disclosure is not necessarily limited to the illustrations.

[0050] In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broad sense that includes these axes. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, but they can also refer to different directions that are not orthogonal to each other.

[0051] In this specification, where certain embodiments can be implemented as described herein, a particular process sequence may be performed differently than the sequence described. For example, two processes described consecutively may be performed substantially simultaneously, or they may be performed in the reverse order of their description.

[0052] Figure 1 This is a schematic perspective view of the display device 1 according to an embodiment. Figure 2a and Figure 2b It is shown that Figure 1 A perspective view of the display device 1 in a state where it is stretched in the first direction. Figure 2c It is shown that Figure 1 A perspective view of the display device 1 in a state where it is stretched in the second direction. Figure 2d It is shown that Figure 1 A perspective view of the display device 1 in a state where it is elongated in the first and second directions. Figure 2e It is shown that Figure 1 The perspective view of the display device 1 in a state where it is stretched upwards.

[0053] refer to Figure 1 The display device 1 may include a display area DA and a non-display area NDA. Multiple pixels may be included in the display area DA. The display device 1 can provide an image (e.g., a specific or predetermined image) by using light emitted from the multiple pixels. The non-display area NDA may be outside the display area DA. The non-display area NDA may be an area in which no image is provided, and may completely surround the display area DA (e.g., completely around the periphery of the display area DA).

[0054] The display device 1 can be elongated or shortened in various directions. The display device 1 can be elongated in a first direction (e.g., the x-direction and / or the -x-direction) by an external force applied by an external object or a user. In embodiments, such as... Figure 2a and Figure 2b As shown, the display area DA and / or non-display area NDA of the display device 1 can be elongated in a first direction (e.g., the x-direction and / or the -x-direction). For example, as Figure 2a As shown, the display area DA and / or non-display area NDA of the display device 1 can be elongated in the x-direction and the -x-direction, or as shown in the figure. Figure 2b As shown, the display area DA and / or non-display area NDA of the display device 1 can be fixed on one side of the display device 1 while being stretched in the x direction.

[0055] The display device 1 can be elongated in a second direction (e.g., the y-direction and / or the -y-direction) by an external force applied by an external object or a user. In an embodiment, as... Figure 2c As shown, the display area DA and / or non-display area NDA of the display device 1 can be elongated in the y-direction and the -y-direction. In another embodiment, the display area DA and / or non-display area NDA of the display device 1 can be elongated in the y-direction or the -y-direction while being fixed on one side of the display device 1.

[0056] The display device 1 can be elongated in multiple directions (e.g., a first direction and a second direction) by an external force applied by an external object or a part of the user (e.g., a part of the human body). Figure 2d As shown, the display area DA and / or the non-display area NDA of the display device 1 can be stretched in the ±x and ±y directions.

[0057] The display device 1 can be elongated in a third direction (e.g., the z-direction and / or the -z-direction) by an external force applied by an external object or a user. In an embodiment, as... Figure 2e As shown, a portion of the display device 1 (e.g., a portion of the display area DA) may protrude in the z-direction. In another embodiment, a portion of the display device 1 (e.g., a portion of the display area DA) may protrude in the -z-direction (e.g., may be recessed in the z-direction).

[0058] Figures 2a to 2e The illustration shows the display device 1 being elongated in a first direction, a second direction, and / or a third direction, but this disclosure is not limited thereto. In another embodiment, the display device 1 may be modified to an irregular shape (e.g., bent or twisted along two or more axes).

[0059] Figure 3 This is a schematic plan view of the display device 1 according to an embodiment.

[0060] Multiple pixels can be arranged in the display area DA of the display device 1. Each of the multiple pixels may include a sub-pixel that emits light of a different color from each other. Light-emitting elements corresponding to the sub-pixels can be arranged in the display area DA. Circuitry for providing electrical signals to transistors electrically connected to the light-emitting elements can be arranged in a non-display area NDA surrounding the display area DA. A gate driving circuit GDC can be arranged in each of the first non-display area NDA1 and the second non-display area NDA2 (on both sides of the display area DA (e.g., opposite sides), with the first non-display area NDA1 and the second non-display area NDA2 between these two sides). The gate driving circuit GDC may include a driver for providing electrical signals to the gate electrode of each transistor electrically connected to the light-emitting element. Figure 3 The diagram shows a gate drive circuit (GDC) arranged in each of the first non-display area NDA1 and the second non-display area NDA2, but this disclosure is not limited thereto. In another embodiment, the gate drive circuit (GDC) may be arranged in one of the first non-display area NDA1 and the second non-display area NDA2.

[0061] The data drive circuit DDC can be arranged in a third non-display area NDA3 and / or a fourth non-display area NDA4 that connects the first non-display area NDA1 and the second non-display area NDA2 to each other. In an embodiment, Figure 3 The diagram shows the data drive circuitry DDC arranged in the fourth non-display area NDA4. In another embodiment, the data drive circuitry DDC may be arranged in each of the third non-display area NDA3 and the fourth non-display area NDA4.

[0062] Figure 3 The data drive circuit DDC is shown arranged in the fourth non-display area NDA4 of the display device 1, but the present disclosure is not limited thereto. In another embodiment, the display device 1 may further include a flexible circuit board electrically connected to the display device 1 via terminal units (e.g., terminals or pads) disposed in the fourth non-display area NDA4, and the data drive circuit DDC may be disposed on the flexible circuit board.

[0063] In some embodiments, the elongation rate of the non-display area NDA may be less than or equal to the elongation rate of the display area DA. In embodiments, the elongation rate of the non-display area NDA may vary from region to region (e.g., it may vary depending on the region). For example, the first non-display area NDA1, the second non-display area NDA2, and the third non-display area NDA3 may have the same or substantially the same elongation rate, but the elongation rate of the fourth non-display area NDA4 may be less than the elongation rate of each of the first non-display area NDA1, the second non-display area NDA2, and the third non-display area NDA3.

[0064] Figure 4a This is a schematic plan view of the display device 1 according to an embodiment. Figure 4b This is a schematic cross-sectional view of the display device 1 according to an embodiment.

[0065] More in detail, Figure 4a yes Figure 3 An enlarged view of area A, and Figure 4b It is along Figure 4a A cross-sectional view of display device 1 taken by line IV-IV'.

[0066] refer to Figure 4a and Figure 4b The display device 1 may include a substrate 100, a circuit element layer 110, a light-emitting element LED, a dam layer 120, a cover layer 130, and an encapsulation layer 300.

[0067] The substrate 100 may comprise a polymer resin such as polyethersulfone, polyarylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polycarbonate, cellulose triacetate, or cellulose acetate propionate. In one embodiment, the substrate 100 may be a single layer comprising one of the aforementioned polymer resins. In another embodiment, the substrate 100 may have a multilayer structure comprising a base layer containing at least one of the aforementioned polymer resins and a barrier layer comprising an inorganic insulating material. The substrate 100 comprising the polymer resin may have flexible, rollable, and / or bendable properties.

[0068] A circuit element layer 110 may be disposed on a substrate 100. The circuit element layer 110 may include a pixel driving circuit portion PC. The pixel driving circuit portion PC may include a thin-film transistor and a storage capacitor. Layers constituting the thin-film transistor and the storage capacitor (e.g., semiconductor layers and electrode layers) may be disposed between insulating layers. Multiple pixel driving circuit portions PC may be provided. The multiple pixel driving circuit portions PC may be arranged spaced apart from each other. For example, the pixel driving circuit portions PC may include a first pixel driving circuit portion PC1, a second pixel driving circuit portion PC2, and a third pixel driving circuit portion PC3 arranged spaced apart from each other.

[0069] The dam layer 120 may be disposed on the circuit element layer 110. The dam layer 120 may include organic or inorganic materials. When the dam layer 120 includes organic materials, it may include one or more organic insulating materials selected from the group consisting of polyimide, polyamide, acrylic resin layer, benzocyclobutene, and phenolic resin layer. When the dam layer 120 includes inorganic materials, it may have a single-layer or multi-layer structure including one or more of silicon oxide (SiOx), silicon nitride (SiNx), and / or silicon oxynitride (SiON).

[0070] The light-emitting element (LED) can be arranged on the circuit element layer 110 and electrically connected to the pixel driving circuit section PC. The LED can include multiple sub-LEDs. For example, the LED can include a first sub-LED s1, a second sub-LED s2, and a third sub-LED s3. The first sub-LED s1, second sub-LED s2, and third sub-LED s3 can be arranged spaced apart from each other. The first sub-LED s1 can be electrically connected to the first pixel driving circuit section PC1. The second sub-LED s2 can be electrically connected to the second pixel driving circuit section PC2. The third sub-LED s3 can be electrically connected to the third pixel driving circuit section PC3.

[0071] The first sub-light-emitting element LEDs1 may include a first pixel electrode 211, a first light-emitting layer 212, a common electrode 201, a first functional layer 202, and a second functional layer 203. The second sub-light-emitting element LEDs2 may include a second pixel electrode 221, a second light-emitting layer 222, a common electrode 201, a first functional layer 202, and a second functional layer 203. The third sub-light-emitting element LEDs3 may include a third pixel electrode 231, a third light-emitting layer 232, a common electrode 201, a first functional layer 202, and a second functional layer 203.

[0072] The first to third pixel electrodes 211, 221, and 231 may be arranged on the circuit element layer 110 and spaced apart from each other. The first to third pixel electrodes 211, 221, and 231 may include conductive oxides such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), or zinc aluminum oxide (AZO). In another embodiment, the first to third pixel electrodes 211, 221, and 231 may include a reflective layer comprising silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or suitable compounds thereof. In another embodiment, the first to third pixel electrodes 211, 221, and 231 may further include a layer formed of ITO, IZO, ZnO, or In2O3 beneath the aforementioned reflective layer.

[0073] A dam layer 120 may be disposed on the first to third pixel electrodes 211, 221, and 231. The dam layer 120 may include a cover portion 121 and a dam opening OP120. The cover portion 121 may cover the end of each of the first to third pixel electrodes 211, 221, and 231. Furthermore, the dam opening OP120 may expose a portion of each of the first to third pixel electrodes 211, 221, and 231.

[0074] A first light-emitting layer 212 may be disposed on a first pixel electrode 211, a second light-emitting layer 222 may be disposed on a second pixel electrode 221, and a third light-emitting layer 232 may be disposed on a third pixel electrode 231. The first to third light-emitting layers 212, 222, and 232 may be housed within a dam opening OP120 of the dam layer 120. The first to third light-emitting layers 212, 222, and 232 may comprise polymers or low-molecular-weight organic materials that emit light of a desired color (e.g., a specific or predetermined color). As another example, the first to third light-emitting layers 212, 222, and 232 may comprise inorganic light-emitting materials or quantum dots. The first to third light-emitting layers 212, 222, and 232 may emit light of different colors from each other. For example, the first light-emitting layer 212 may emit red light, the second light-emitting layer 222 may emit green light, and the third light-emitting layer 232 may emit blue light.

[0075] The common electrode 201 may be disposed on the first to third light-emitting layers 212, 222, and 232. The common electrode 201 may cover the embankment layer 120. The common electrode 201 may include a conductive material having a low work function. For example, the common electrode 201 may include a (semi-)transparent layer comprising Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, lithium (Li), calcium (Ca), or suitable alloys thereof. As another example, the common electrode 201 may further include a layer such as ITO, IZO, ZnO, or In2O3 on a (semi-)transparent layer comprising one or more of the above-described materials.

[0076] The first functional layer 202 may be disposed between the first to third light-emitting layers 212, 222, and 232 and the first to third pixel electrodes 211, 221, and 231. The first functional layer 202 may be disposed on the embankment layer 120. For example, the first functional layer 202 may include, for example, a hole transport layer (HTL) or an HTL and a hole injection layer (HIL).

[0077] The second functional layer 203 may be disposed between the first to third light-emitting layers 212, 222 and 232 and the common electrode 201. For example, the second functional layer 203 may include an electron transport layer (ETL) and / or an electron injection layer (EIL).

[0078] The first functional layer 202, the second functional layer 203, and the common electrode 201 can be sequentially stacked on the cover portion 121 of the embankment layer 120. The first functional layer 202, the second functional layer 203, and the common electrode 201 can be formed to completely or substantially completely cover the substrate 100 as a common layer.

[0079] The capping layer 130 can be disposed on the substrate 100. The capping layer 130 can be disposed on the common electrode 201 of the light-emitting element LED. The capping layer 130 may include a capping frame 131 and a support portion (e.g., see...). Figure 5a 132) and the cover opening OP130.

[0080] The following will refer to Figure 5a and Figure 5b The support portion 132 is described in more detail.

[0081] The cover frame 131 may be disposed on the substrate 100 and spaced apart from the common electrode 201. The cover frame 131 may include an opaque material. For example, the cover frame 131 may include at least one of thermoplastic polyurethane (TPU), thermoplastic polyethylene (TPE), and silicone rubber.

[0082] A cover opening OP130 may be provided on a cover frame 131. The cover opening OP130 may pass through (e.g., penetrate) the cover frame 131. The cover opening OP130 may overlap with a light-emitting element (LED). For example, a cover opening OP130 may overlap with a first sub-light-emitting element (LEDs1), a second sub-light-emitting element (LEDs2), and a third sub-light-emitting element (LEDs3). The light-emitting element (LED) can be exposed to the outside from the cover frame 131 through the cover opening OP130. Light emitted from the light-emitting element (LED) can be displayed to the outside through the cover opening OP130. Therefore, the light-emitting element (LED) can be defined as a pixel (PX).

[0083] Encapsulation layer 300 may be disposed on substrate 100. Encapsulation layer 300 may be disposed on capping layer 130. Encapsulation layer 300 may be supported by capping layer 130. Encapsulation layer 300 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In an example, encapsulation layer 300 may include a first inorganic encapsulation layer 310, an organic encapsulation layer 320, and a second inorganic encapsulation layer 330 stacked sequentially. However, this disclosure is not limited thereto, and encapsulation layer 300 may have various suitable configurations as needed or desired.

[0084] The first inorganic encapsulation layer 310 and the second inorganic encapsulation layer 330 may include one or more materials selected from the group consisting of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, zinc oxide, cerium oxide, and silicon oxynitride.

[0085] The organic encapsulation layer 320 may include one or more materials selected from the group consisting of acrylic resin layers, methacrylate resin layers, polyisoprene, vinyl resin layers, epoxy resin layers, urethane resin layers, cellulose resin layers, and perylene resin layers.

[0086] Figure 4b An embodiment in which the encapsulation layer 300 is formed on a plurality of light-emitting elements (LEDs) is shown, but the present disclosure is not limited thereto. In other words, the display device 1 may include a sealing substrate instead of the encapsulation layer 300. The sealing substrate may be bonded to the substrate 100 (e.g., coupled or attached) by using a sealing member such as a sealing glass material, and may block external moisture and / or air, etc.

[0087] In some embodiments, various functional layers, such as a polarizing layer, a color filter layer, and / or a touch screen layer, may be further arranged on the encapsulation layer 300.

[0088] refer to Figure 3 and Figure 4a The first structure of the display device 1 can be shown. The first structure of the display device 1 can be the structure of the display device 1 before it is stretched (e.g., pulled).

[0089] For ease of explanation, a virtual center line passing through the center of the display area DA in a first direction (e.g., the x-direction and / or the -x-direction) may be referred to as the first center line CL1, and a virtual center line passing through the center of the display area DA in a second direction (e.g., the y-direction and / or the -y-direction) may be referred to as the second center line CL2. The second direction (e.g., the y-direction and / or the -y-direction) may be a direction intersecting the first direction (e.g., the x-direction and / or the -x-direction). For example, the angle between the first direction (e.g., the x-direction and / or the -x-direction) and the second direction (e.g., the y-direction and / or the -y-direction) may be a right angle or substantially a right angle.

[0090] In the first structure, a virtual line spaced apart from the first centerline CL1 in a second direction (e.g., the y-direction) and protruding in the second direction (e.g., the y-direction) may be referred to as the first line L1. In the first structure, the distance between the first centerline CL1 and the first line L1 may gradually decrease based on the second centerline CL2 along the first direction (e.g., the x-direction and / or the -x-direction). In other words, in the first structure, the distance between the intersection or crosspoint between the first centerline CL1 and the second centerline CL2 and the intersection or crosspoint ISP1 between the first line L1 and the second centerline CL2 may be the maximum distance among the distances between the first centerline CL1 and the first line L1.

[0091] Furthermore, in the first structure, a virtual line that is symmetrical or substantially symmetrical to the first line L1 based on the first center line CL1 can be referred to as the second line L2. In other words, in the first structure, the second line L2 can be a virtual line that is spaced apart from the first center line CL1 in a second direction (e.g., the -y direction) and protrudes in a second direction (e.g., the -y direction). In the first structure, the distance between the first center line CL1 and the second line L2 can gradually decrease based on the second center line CL2 along a first direction (e.g., the x direction and / or the -x direction). In other words, in the first structure, the distance between the intersection or cross point between the first center line CL1 and the second center line CL2 and the intersection or cross point ISP2 between the second line L2 and the second center line CL2 can be the maximum distance among the distances between the first center line CL1 and the second line L2.

[0092] Multiple light-emitting elements (LEDs) can be provided. In the first structure, the multiple LEDs can be arranged at different intervals. The multiple LEDs can be arranged symmetrically or substantially symmetrically based on a first center line CL1 and a second center line CL2.

[0093] For example, multiple light-emitting elements (LEDs) may include multiple first light-emitting elements (LED1), multiple second light-emitting elements (LED2), and multiple third light-emitting elements (LED3). The multiple first light-emitting elements (LED1) may be arranged along a first center line CL1. The multiple second light-emitting elements (LED2) may be arranged along a first line L1. The multiple third light-emitting elements (LED3) may be arranged along a second line L2.

[0094] At least one of the plurality of first light-emitting elements LED1, at least one of the plurality of second light-emitting elements LED2, and at least one of the plurality of third light-emitting elements LED3 may be arranged linearly along a second direction (e.g., the y-direction and / or the -y-direction). The plurality of first light-emitting elements LED1 may be arranged in a straight line along a first direction (e.g., the x-direction and / or the -x-direction). The plurality of second light-emitting elements LED2 and the plurality of third light-emitting elements LED3 may be arranged in a convex, curved form based on a first centerline CL1. In other words, the plurality of light-emitting elements LEDs may be arranged radially.

[0095] The cover frame 131 of the cover layer 130 can be arranged on the light-emitting element LED. Multiple cover openings OP130 of the cover layer 130 can be provided. Multiple cover openings OP130 can overlap with multiple light-emitting elements LED. The number of cover openings OP130 can be the same as the number of light-emitting elements LED, and one cover opening OP130 can correspond to one light-emitting element LED.

[0096] In the plan view, the size of each of the multiple cover openings OP130 can be larger than the size of each of the multiple light-emitting elements LED. In the plan view, the size of one of the multiple cover openings OP130 can be larger than the sum of the sizes of the first sub-light-emitting element LEDs1, the second sub-light-emitting element LEDs2, and the third sub-light-emitting element LEDs3. In other words, in the plan view, the cover frame 131 and the multiple light-emitting elements LED can not overlap each other.

[0097] Multiple cover openings OP130 can be arranged at equal or substantially equal intervals. The multiple cover openings OP130 can be arranged in a grid pattern along a first direction (e.g., the x-direction and / or the -x-direction) and a second direction (e.g., the y-direction and / or the -y-direction). Multiple light-emitting elements LEDs can be arranged symmetrically or substantially symmetrically based on a first center line CL1 and a second center line CL2. The distances between multiple cover openings OP130 arranged linearly along the first direction (e.g., the x-direction and / or the -x-direction) can be the same. Furthermore, the distances between multiple cover openings OP130 arranged linearly along the second direction (e.g., the y-direction and / or the -y-direction) can be the same.

[0098] In the above structure, the cover opening OP130 is defined as (or defined as) a pixel PX. Therefore, even when multiple light-emitting elements LEDs are arranged at different intervals, multiple pixels PX can be arranged at equal or substantially equal intervals. In other words, even when multiple light-emitting elements LEDs are arranged radially, multiple pixels PX can be arranged uniformly or substantially uniformly in a grid pattern.

[0099] Figure 5a This is a schematic plan view of the display device 1 according to an embodiment. Figure 5b This is a schematic cross-sectional view of the display device 1 according to an embodiment.

[0100] More in detail, Figure 5a yes Figure 3 An enlarged view of area B, and Figure 5b It is along Figure 5a A cross-sectional view of display device 1 taken by line V-V'.

[0101] exist Figure 5a and Figure 5b In the middle, with reference above Figure 4a and Figure 4b The same reference numerals are used to denote the same or substantially the same elements, and therefore, their redundant descriptions may not be repeated.

[0102] refer to Figure 5a and Figure 5b The display device 1 may include a substrate 100, a circuit element layer 110, a light-emitting element LED, a dam layer 120, a cover layer 130, and an encapsulation layer 300.

[0103] The substrate 100 may be flexible, rollable, or bendable. A circuit element layer 110 may be disposed on the substrate 100. The circuit element layer 110 may include pixel driving circuit portions PC. For example, the pixel driving circuit portions PC may include a first pixel driving circuit portion PC1, a second pixel driving circuit portion PC2, and a third pixel driving circuit portion PC3 arranged spaced apart from each other. A retaining layer 120 may be disposed on the circuit element layer 110.

[0104] The light-emitting element (LED) can be arranged on the circuit element layer 110 and can be electrically connected to the pixel driving circuit section PC. The light-emitting element (LED) may include multiple sub-light-emitting elements (LEDs). For example, the light-emitting element (LED) may include a first sub-light-emitting element (LEDs1), a second sub-light-emitting element (LEDs2), and a third sub-light-emitting element (LEDs3).

[0105] The first sub-light-emitting element LEDs1 may include a first pixel electrode 211, a first light-emitting layer 212, a common electrode 201, a first functional layer 202, and a second functional layer 203. The second sub-light-emitting element LEDs2 may include a second pixel electrode 221, a second light-emitting layer 222, a common electrode 201, a first functional layer 202, and a second functional layer 203. The third sub-light-emitting element LEDs3 may include a third pixel electrode 231, a third light-emitting layer 232, a common electrode 201, a first functional layer 202, and a second functional layer 203. A dam layer 120 may be disposed on the first to third pixel electrodes 211, 221, and 231. The dam layer 120 may include a cover portion 121 and a dam opening OP120.

[0106] The capping layer 130 can be disposed on the substrate 100. The capping layer 130 can be disposed on the common electrode 201 of the light-emitting element LED. The capping layer 130 may include a cap frame 131 and a cap opening OP130.

[0107] The cover frame 131 may be disposed on the substrate 100 and spaced apart from the common electrode 201. The cover frame 131 may include an opaque material. For example, the cover frame 131 may include at least one of TPU, TPE and silicone rubber.

[0108] The support portion 132 can support the cover frame 131 from the substrate 100. For example, at least a portion of the support portion 132 can be arranged in a non-display area (e.g., see...). Figure 3 The support portion 132 can be attached to the common electrode 201 and can support the cover frame 131. One side of the support portion 132 can be fixed to the common electrode 201, and the other side (e.g., the opposite side) of the support portion 132 can be fixed to the cover frame 131. The support portion 132 can include the same material as the cover frame 131. For example, the support portion 132 can include at least one of TPU, TPE, and silicone rubber. The support portion 132 and the cover frame 131 can be formed together as a single unit.

[0109] The cover opening OP130 can be arranged at the cover frame 131 (e.g., in the middle or at the top). The cover opening OP130 can pass through (e.g., penetrate) the cover frame 131. The cover opening OP130 can overlap with a light-emitting element (LED). For example, a cover opening OP130 can overlap with all of the first sub-light-emitting elements LEDs1, the second sub-light-emitting elements LEDs2, and the third sub-light-emitting elements LEDs3 of a light-emitting element LED. The light-emitting element LED can be exposed to the outside from the cover frame 131 through the cover opening OP130. Light emitted from the light-emitting element LED can be displayed to the outside through the cover opening OP130. Therefore, the light-emitting element LED can be defined as a pixel PX.

[0110] Encapsulation layer 300 may be disposed on substrate 100. Encapsulation layer 300 may be disposed on capping layer 130. Encapsulation layer 300 may be supported by capping layer 130. Encapsulation layer 300 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In an example, encapsulation layer 300 may include a first inorganic encapsulation layer 310, an organic encapsulation layer 320, and a second inorganic encapsulation layer 330 stacked sequentially. However, this disclosure is not limited thereto, and encapsulation layer 300 may have various suitable configurations.

[0111] Figure 6 This is a schematic plan view of the display device 1 according to an embodiment.

[0112] More in detail, Figure 6 yes Figure 3 An enlarged view of area A. In Figure 6 In the middle, with reference above Figure 4a The same reference numerals are used to denote the same or substantially the same elements, and therefore, their redundant descriptions may not be repeated.

[0113] refer to Figure 3 and Figure 6 A second structure for the display device 1 can be shown. The second structure of the display device 1 can be a structure in which the display device 1 is elongated (e.g., stretched) from the first structure of the display device 1 in a first direction (e.g., the x-direction and / or the -x-direction). In other words, the display device 1 can... Figure 4a The first structure shown in the figure is the same as Figure 6 The conversion between the second structure shown in the figure.

[0114] The elongation of substrate 100 can vary depending on its position. The elongation of substrate 100 in a first direction (e.g., the x-direction and / or the -x-direction) can increase from the second centerline CL2 toward the first direction (e.g., the x-direction and / or the -x-direction). In other words, at the second centerline CL2, the elongation of substrate 100 in the first direction (e.g., the x-direction and / or the -x-direction) can be minimal.

[0115] When the substrate 100 is elongated in a first direction (e.g., the x-direction and / or the -x-direction), the substrate 100 can contract toward the first centerline CL1 in a second direction (e.g., the y-direction and / or the -y-direction). Compared to the gap (e.g., distance) between the first centerline CL1 and the first line L1 in the first structure, the gap (e.g., distance) between the first centerline CL1 and the second line L2 in the second structure can be reduced. Furthermore, compared to the gap (e.g., distance) between the first centerline CL1 and the second line L2 in the first structure, the gap (e.g., distance) between the first centerline CL1 and the second line L2 in the second structure can be reduced. In this case, the degree of contraction of the substrate 100 in the direction toward the first centerline CL1 can be reduced by moving away from the second centerline CL2 in the first direction (e.g., the x-direction and / or the -x-direction). In other words, the elongation of the substrate 100 in the direction toward the first centerline CL1 can be maximized at the second centerline CL2.

[0116] In the second structure, when the display device 1 is elongated in the first direction (e.g., the x-direction and / or the -x-direction), the distance between the plurality of light-emitting elements LEDs in the first direction (e.g., the x-direction and / or the -x-direction) can be increased. Furthermore, in the second structure, when the display device 1 is elongated in the first direction (e.g., the x-direction and / or the -x-direction), the distance between the plurality of light-emitting elements LEDs in the second direction (e.g., the y-direction and / or the -y-direction) can be decreased. More specifically, in the second structure, when the display device 1 is elongated in the first direction (e.g., the x-direction and / or the -x-direction), the distance between the plurality of light-emitting elements LEDs adjacent to the second centerline CL2 can be greatly reduced.

[0117] Therefore, in the second structure, the curvature of each of the first line CL1 and the second line L2 can be reduced compared to the curvature of each of the first line CL1 and the second line L2 in the first structure. For example, in the second structure, the curvature of each of the first line L1 and the second line L2 can be 0. In this case, in the second structure, the first line L1 and the second line L2 can be straight lines or substantially straight lines. Compared to the distance between the multiple light-emitting elements LEDs in the first structure, the distance between the multiple light-emitting elements LEDs in the second structure can be uniform or substantially uniform. In the second structure, when the curvature of the first line L1 and the second line L2 is 0, the multiple light-emitting elements LEDs can be arranged in a grid pattern in a first direction (e.g., the x-direction and / or the -x-direction) and a second direction (e.g., the y-direction and / or the -y-direction).

[0118] The modulus of the cover frame 131 can be less than that of the substrate 100. Therefore, the elongation of the cover frame 131 at different positions can be uniform or substantially uniform compared to the elongation of the substrate 100 at different positions.

[0119] When the cover frame 131 is elongated in a first direction (e.g., the x-direction and / or the -x-direction), the cover frame 131 can contract in the direction toward the first centerline CL1. In this case, the degree of contraction of the cover frame 131 in the direction toward the first centerline CL1 can be uniform or substantially uniform compared to the degree of contraction of the substrate 100 in the direction toward the first centerline CL1.

[0120] In the second structure, when the display device 1 is elongated in the first direction (e.g., the x-direction and / or the -x-direction), the distance between the plurality of cover openings OP130 in the first direction (e.g., the x-direction and / or the -x-direction) can be increased. Furthermore, in the second structure, when the display device 1 is elongated in the first direction (e.g., the x-direction and / or the -x-direction), the distance between the plurality of cover openings OP130 in the second direction (e.g., the y-direction and / or the -y-direction) can be decreased.

[0121] However, even when the first structure is converted to the second structure, the distance between the multiple cover openings OP130 can remain uniform or substantially uniform. In other words, in each of the first and second structures, the multiple cover openings OP130 can be arranged in a grid pattern in a first direction (e.g., the x-direction and / or the -x-direction) and a second direction (e.g., the y-direction and / or the -y-direction). In the second structure, the multiple cover openings OP130 are arranged at equal or substantially equal intervals. Therefore, the multiple pixels PX can also be arranged at equal or substantially equal intervals. In other words, in the second structure, the multiple pixels PX can be arranged uniformly or substantially uniformly in a grid pattern.

[0122] refer to Figure 4a and Figure 6 In each of the first and second structures, the plurality of pixels PX can be arranged uniformly or substantially uniformly at equal or substantially equal intervals. In other words, even when the display device 1 is elongated in a first direction (e.g., the x-direction and / or the -x-direction) and the arrangement of the plurality of light-emitting elements LEDs is deformed, the cover layer 130 can compensate for the deformation of the arrangement of the plurality of light-emitting elements LEDs.

[0123] Furthermore, even when the distance between the first center line CL1, the first line L1, and the second line L2 decreases in the second structure, the multiple light-emitting elements LEDs are still arranged radially as in the first structure. Therefore, the desired minimum distance between the multiple light-emitting elements LEDs can be ensured. Since the substrate 100 contracts in the second direction (e.g., the y-direction and / or the -y-direction), the phenomenon of a significant reduction in the distance between the multiple light-emitting elements LEDs in the second direction (e.g., the y-direction and / or the -y-direction) can be prevented or reduced. Therefore, the stress generated in the substrate 100 and the multiple light-emitting elements LEDs can be reduced, and the durability of the display device 1 can be improved.

[0124] Figures 7a to 7c This is an equivalent circuit diagram of a sub-pixel of a display device 1 according to one or more embodiments.

[0125] refer to Figure 7a The light-emitting element (LED) corresponding to the sub-pixel can be electrically connected to the pixel driving circuit section PC. The pixel driving circuit section PC may include a first transistor T1, a second transistor T2, and a storage capacitor Cst. The pixel driving circuit section PC can be electrically connected to signal lines and voltage lines. The signal lines may include data lines DL and gate lines such as the first scan line SL1. The voltage lines may include a first voltage line VDDL.

[0126] The second transistor T2 can be electrically connected to the first scan line SL1 and the data line DL. The first scan line SL1 can provide a first scan signal GW to the gate electrode of the second transistor T2. The second transistor T2 can transmit a data signal Dm input from the data line DL to the first transistor T1 in response to the first scan signal GW input from the first scan line SL1.

[0127] The storage capacitor Cst can be connected to the second transistor T2 and the first voltage line VDDL, and can store a voltage corresponding to the difference between the voltage transmitted from the second transistor T2 and the first power supply voltage VDD supplied by the first voltage line VDDL.

[0128] The first transistor T1 can be a driving transistor and can control the driving current flowing through the light-emitting element LED. The first transistor T1 can be connected to a first voltage line VDDL and a storage capacitor Cst. The first transistor T1 can control the driving current flowing from the first voltage line VDDL through the light-emitting element LED in response to the value of the voltage stored in the storage capacitor Cst. The light-emitting element LED can emit light with a desired brightness (e.g., a specific or predetermined brightness) by using the driving current. The first electrode of the light-emitting element LED can be electrically connected to the first transistor T1, and the second electrode of the light-emitting element LED can be electrically connected to a second voltage line VSSL for supplying a second power supply voltage VSS.

[0129] Figure 7a The illustration shows a pixel driving circuit section PC comprising two transistors and a storage capacitor. However, in another embodiment, the pixel driving circuit section PC may include three or more transistors.

[0130] refer to Figure 7b The pixel driving circuit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor Cst.

[0131] The pixel driving circuitry (PC) can be electrically connected to signal lines and voltage lines. Signal lines may include data lines (DL) and gate lines such as the first scan line (SL1), second scan line (SL2), third scan line (SL3), and transmit control line (EML). Voltage lines may include the first initialization voltage line (VIL1), the second initialization voltage line (VIL2), and the first voltage line (VDDL).

[0132] The first voltage line VDDL transmits the first power supply voltage VDD to the first transistor T1. The first initialization voltage line VIL1 transmits the first initialization voltage Vint used to initialize the first transistor T1 to the pixel driving circuit section PC. The second initialization voltage line VIL2 transmits the second initialization voltage Vaint used to initialize the first electrode of the light-emitting element LED to the pixel driving circuit section PC.

[0133] The first transistor T1 can be electrically connected to the first voltage line VDDL via the fifth transistor T5, and can be electrically connected to the light-emitting element LED via the sixth transistor T6. The first transistor T1 can be used as a driving transistor, receiving the data signal Dm according to the switching operation of the second transistor T2, and supplying driving current to the light-emitting element LED.

[0134] The second transistor T2 can be a data write transistor and can be electrically connected to the first scan line SL1 and the data line DL. The second transistor T2 can be electrically connected to the first voltage line VDDL via the fifth transistor T5. The second transistor T2 can be turned on in response to the first scan signal GW transmitted through the first scan line SL1 and can perform a switching operation to transmit the data signal Dm transmitted from the data line DL to the first node N1.

[0135] The third transistor T3 can be electrically connected to the first scan line SL1, and can be electrically connected to the light-emitting element LED via the sixth transistor T6. The third transistor T3 can be turned on in response to the first scan signal GW transmitted through the first scan line SL1, and can be connected to the first transistor T1 diode.

[0136] The fourth transistor T4 can be the first initialization transistor and can be electrically connected to the third scan line SL3 and the first initialization voltage line VIL1. The fourth transistor T4 can be turned on in response to the third scan signal GI transmitted through the third scan line SL3, and can transmit the first initialization voltage Vint from the first initialization voltage line VIL1 to the gate electrode of the first transistor T1, thereby initializing the voltage of the gate electrode of the first transistor T1. The third scan signal GI can correspond to the first scan signal of another pixel driving circuit section disposed in the row preceding this pixel driving circuit section PC.

[0137] The fifth transistor T5 can be an operation control transistor, and the sixth transistor T6 can be an emitter control transistor. The fifth transistor T5 and the sixth transistor T6 can be electrically connected to the emitter control line EML, can be turned on concurrently or substantially simultaneously in response to the emitter control signal EM transmitted through the emitter control line EML, and can form a current path through which the drive current can flow in the direction from the first voltage line VDDL to the light-emitting element LED.

[0138] The seventh transistor T7 can be the second initialization transistor and can be electrically connected to the second scan line SL2, the second initialization voltage line VIL2, and the sixth transistor T6. The seventh transistor T7 can be turned on in response to the second scan signal GB transmitted through the second scan line SL2, and can transmit the second initialization voltage Vaint from the second initialization voltage line VIL2 to the first electrode of the light-emitting element LED, thereby initializing the first electrode of the light-emitting element LED.

[0139] The storage capacitor Cst may include a first electrode CE1 and a second electrode CE2. The first electrode CE1 may be electrically connected to the gate electrode of the first transistor T1, and the second electrode CE2 may be electrically connected to the first voltage line VDDL. The storage capacitor Cst may store and retain a voltage corresponding to the voltage difference between the first voltage line VDDL and the gate electrode of the first transistor T1, thereby maintaining or substantially maintaining the voltage applied to the gate electrode of the first transistor T1.

[0140] refer to Figure 7c The pixel driving circuit PC may include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, an eighth transistor T8, a ninth transistor T9, a storage capacitor Cst, and an auxiliary capacitor Ca.

[0141] The pixel driving circuitry PC can be electrically connected to signal lines and voltage lines. Signal lines may include data lines DL and gate lines such as the first scan line SL1, the second scan line SL2, the third scan line SL3, and the emit control line EML. Voltage lines may include the first initialization voltage line VIL1, the second initialization voltage line VIL2, the hold voltage line VSL, and the first voltage line VDDL.

[0142] The first voltage line VDDL transmits the first power supply voltage VDD to the first transistor T1. The first initialization voltage line VIL1 transmits the first initialization voltage Vint used to initialize the first transistor T1 to the pixel driving circuit section PC. The second initialization voltage line VIL2 transmits the second initialization voltage Vaint used to initialize the first electrode of the light-emitting element LED to the pixel driving circuit section PC. The holding voltage line VSL provides the holding voltage VSUS to the second node N2 (e.g., the second electrode CE2 of the storage capacitor Cst) during the initialization and data write intervals.

[0143] The first transistor T1 can be electrically connected to the first voltage line VDDL via the fifth transistor T5 and the eighth transistor T8, and can be electrically connected to the light-emitting element LED via the sixth transistor T6. The first transistor T1 can be used as a driving transistor, receiving the data signal Dm according to the switching operation of the second transistor T2, and supplying driving current to the light-emitting element LED.

[0144] The second transistor T2 can be electrically connected to the first scan line SL1 and the data line DL, and can be electrically connected to the first voltage line VDDL via the fifth transistor T5 and the eighth transistor T8. The second transistor T2 can be turned on in response to the first scan signal GW transmitted through the first scan line SL1, and can perform a switching operation to transmit the data signal Dm transmitted from the data line DL to the first node N1.

[0145] The third transistor T3 can be electrically connected to the first scan line SL1 and can be electrically connected to the light-emitting element LED via the sixth transistor T6. The third transistor T3 can be turned on in response to the first scan signal GW transmitted through the first scan line SL1 and can connect the first transistor T1 diode to compensate for the threshold voltage of the first transistor T1.

[0146] The fourth transistor T4 can be electrically connected to the third scan line SL3 and the first initialization voltage line VIL1. It can be turned on in response to the third scan signal GI transmitted through the third scan line SL3, and can transmit the first initialization voltage Vint from the first initialization voltage line VIL1 to the gate electrode of the first transistor T1, thereby initializing the voltage of the gate electrode of the first transistor T1. The third scan signal GI can correspond to the first scan signal of another pixel driving circuit section in the row preceding this pixel driving circuit section PC.

[0147] The fifth transistor T5, the sixth transistor T6, and the eighth transistor T8 can be electrically connected to the emitter control line EML, can be turned on concurrently or substantially simultaneously in response to the emitter control signal EML transmitted through the emitter control line EML, and can form a current path through which the drive current can flow in the direction from the first voltage line VDDL to the light-emitting element LED.

[0148] The seventh transistor T7 can be the second initialization transistor and can be electrically connected to the second scan line SL2, the second initialization voltage line VIL2, and the sixth transistor T6. The seventh transistor T7 can be turned on in response to the second scan signal GB transmitted through the second scan line SL2, and can transmit the second initialization voltage Vaint from the second initialization voltage line VIL2 to the first electrode of the light-emitting element LED, thereby initializing the first electrode of the light-emitting element LED.

[0149] The ninth transistor T9 can be electrically connected to the second scan line SL2, the second electrode CE2 of the storage capacitor Cst, and the holding voltage line VSL. During the initialization and data write intervals, the ninth transistor T9 can be turned on in response to the second scan signal GB transmitted through the second scan line SL2, and can transmit the holding voltage VSUS to the second node N2 (e.g., the second electrode CE2 of the storage capacitor Cst).

[0150] Each of the eighth transistor T8 and the ninth transistor T9 can be electrically connected to the second node N2 (e.g., the second electrode CE2 of the storage capacitor Cst). In some embodiments, during the initialization and data write intervals, the eighth transistor T8 can be turned off and the ninth transistor T9 can be turned on. During the emit interval, the eighth transistor T8 can be turned on and the ninth transistor T9 can be turned off. During the initialization and data write intervals, because the holding voltage VSUS is transmitted to the second node N2, the uniformity of the brightness of the display device according to the voltage drop of the first voltage line VDDL (e.g., long-range uniformity (LRU)) can be improved.

[0151] The storage capacitor Cst may include a first electrode CE1 and a second electrode CE2. The first electrode CE1 may be electrically connected to the gate electrode of the first transistor T1, and the second electrode CE2 may be electrically connected to the eighth transistor T8 and the ninth transistor T9.

[0152] An auxiliary capacitor Ca can be electrically connected to the sixth transistor T6, the sustaining voltage line VSL, and the first electrode of the light-emitting element LED. When the seventh transistor T7 and the ninth transistor T9 are turned on, the auxiliary capacitor Ca can store and maintain a voltage corresponding to the voltage difference between the first electrode of the light-emitting element LED and the sustaining voltage line VSL, thereby preventing or substantially preventing an increase in black brightness when the sixth transistor T6 is turned off.

[0153] Figure 8a This is a schematic plan view of the display device 1 according to an embodiment. Figure 8b This is a schematic cross-sectional view of the display device 1 according to an embodiment.

[0154] More in detail, Figure 8a yes Figure 3 An enlarged view of area A, and Figure 8b It is along Figure 8a A cross-sectional view of display device 1 taken by line VIII-VIII'.

[0155] exist Figure 8a and Figure 8b In the middle, with reference above Figure 4a and Figure 4b The same reference numerals are used to denote the same or substantially the same elements, and therefore, their redundant descriptions may not be repeated.

[0156] refer to Figure 8a and Figure 8b The display device 1 may include a substrate 100, a circuit element layer 110, a light-emitting element LED, a dam layer 120, a cover layer 130, and an encapsulation layer 300.

[0157] The substrate 100 may be flexible, rollable, or bendable. A circuit element layer 110 may be disposed on the substrate 100. The circuit element layer 110 may include pixel driving circuit portions PC. For example, the pixel driving circuit portions PC may include a first pixel driving circuit portion PC1, a second pixel driving circuit portion PC2, and a third pixel driving circuit portion PC3 arranged spaced apart from each other. A retaining layer 120 may be disposed on the circuit element layer 110.

[0158] The light-emitting element (LED) can be arranged on the circuit element layer 110 and can be electrically connected to the pixel driving circuit section PC. The light-emitting element (LED) may include multiple sub-light-emitting elements (LEDs). For example, the light-emitting element (LED) may include a first sub-light-emitting element (LEDs1), a second sub-light-emitting element (LEDs2), and a third sub-light-emitting element (LEDs3).

[0159] The first sub-light-emitting element LEDs1 may include a first pixel electrode 211, a first light-emitting layer 212, a common electrode 201, a first functional layer 202, and a second functional layer 203. The second sub-light-emitting element LEDs2 may include a second pixel electrode 221, a second light-emitting layer 222, a common electrode 201, a first functional layer 202, and a second functional layer 203. The third sub-light-emitting element LEDs3 may include a third pixel electrode 231, a third light-emitting layer 232, a common electrode 201, a first functional layer 202, and a second functional layer 203. A dam layer 120 may be disposed on the first to third pixel electrodes 211, 221, and 231. The dam layer 120 may include a cover portion 121 and a dam opening OP120.

[0160] The capping layer 130 can be disposed on the substrate 100. The capping layer 130 can be disposed on the common electrode 201 of the light-emitting element LED. The capping layer 130 may include a cap frame 131 and a cap opening OP130.

[0161] The cover frame 131 may be disposed on the substrate 100 and spaced apart from the common electrode 201. The cover frame 131 may include an opaque material. For example, the cover frame 131 may include at least one of TPU, TPE and silicone rubber.

[0162] The support portion 132 can support the cover frame 131 from the substrate 100. Multiple support portions 132 can be provided. The multiple support portions 132 can be spaced apart from each other. At least one of the multiple support portions 132 can be arranged in the display area (e.g., see...). Figure 3 In the DA). Arranged in the display area (e.g., see DA). Figure 3 The support portion 132 in the DA can reduce the area of ​​the cover frame 131 in the display area (e.g., see...). Figure 3 The phenomenon of the center of the DA (diastolic vertebra) drooping. Figure 8a In the middle, four support parts 132 are arranged to surround the display area (for example, see...). Figure 3 The central cover opening OP130 of the DA (e.g., is arranged in the display area (e.g., see...) Figure 3 The central cover opening OP130 of the DA) is around the periphery, but this disclosure is not limited thereto, and the number and arrangement of the support portions 132 may be modified differently as needed or desired.

[0163] One side of the support portion 132 can be fixed to the common electrode 201, and the other side (e.g., the opposite side) of the support portion 132 can be fixed to the cover frame 131. The support portion 132 may include the same material as the cover frame 131. For example, the support portion 132 may include at least one of TPU, TPE, and silicone rubber. The support portion 132 and the cover frame 131 may be formed together as a single unit.

[0164] A cover opening OP130 may be provided on a cover frame 131. The cover opening OP130 may pass through (e.g., penetrate) the cover frame 131. The cover opening OP130 may overlap with a light-emitting element (LED). For example, a cover opening OP130 may overlap with all of the first sub-light-emitting elements LEDs1, second sub-light-emitting elements LEDs2, and third sub-light-emitting elements LEDs3 of a light-emitting element LED. The light-emitting element LED can be exposed to the outside from the cover frame 131 through the cover opening OP130. Light emitted from the light-emitting element LED can be displayed to the outside through the cover opening OP130. Therefore, the light-emitting element LED can be defined as a pixel PX.

[0165] Encapsulation layer 300 may be disposed on substrate 100. Encapsulation layer 300 may be disposed on capping layer 130. Encapsulation layer 300 may be supported by capping layer 130. Encapsulation layer 300 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In the example, encapsulation layer 300 may include a first inorganic encapsulation layer 310, an organic encapsulation layer 320 and a second inorganic encapsulation layer 330 stacked sequentially, but this disclosure is not limited thereto, and encapsulation layer 300 may have various suitable configurations as needed or desired.

[0166] Figures 9a to 9g This is a perspective view schematically illustrating various electronic devices including a display device according to one or more embodiments.

[0167] refer to Figure 9a The display device according to embodiments can be used in a wearable electronic device 3100 that is worn on a part of a user's body. The wearable electronic device 3100 may include a main unit (e.g., a main body portion) 3110 and a display unit (e.g., a display portion) 3120 provided in the main unit 3110. The display device according to some embodiments can be used as the display unit 3120 of the wearable electronic device 3100. Figure 9a As shown, the wearable electronic device 3100 can be deformable. In an embodiment, depending on the user's choice, the wearable electronic device 3100 can be used as a smartwatch or a smartphone.

[0168] Figure 9bA medical electronic device 3200 is illustrated. In an embodiment, the medical electronic device 3200 may include a main unit (e.g., a main body portion) 3210 and a light-emitting unit (e.g., a light-emitting portion) 3220. A display device according to some embodiments may be used as the light-emitting unit 3220 of the medical electronic device 3200. The light-emitting unit 3220 may emit light having a desired or specific wavelength (e.g., infrared and / or visible light, etc.) onto the patient's body. In an embodiment, the main unit 3210 may have a stretchable fibrous material and may have a structure that can be worn onto the body of a user of the light-emitting unit.

[0169] Figure 9c An educational electronic device 3300 is illustrated. In an embodiment, the educational electronic device 3300 may include a display unit (e.g., a display portion) 3320 provided in a frame 3310. The display unit 3320 may use a display device according to some embodiments. The display unit 3320 may provide images such as ocean crashing waves, snow-covered mountains, or volcanoes with lava, and in this case, the display unit 3320 may reflect the height of the waves, mountains, or volcano and may be elongated in the height direction (e.g., the z-direction). In some embodiments, a portion of the display unit 3320 may display the movement of lava in three dimensions as the height of the display unit 3320 changes sequentially in the direction of lava flow. The educational electronic device 3300 may include a plurality of pins (e.g., protrusions 3330) arranged on the rear surface of the display unit 3320 such that the display unit 3320 may be elongated in the height direction. As the plurality of pins 3330 move in a third direction (e.g., the z-direction or the -z-direction), the image represented on the display unit 3320 may have a three-dimensional height. Figure 9c An educational electronic device 3300 is shown, but its use is not particularly limited thereto, provided that the educational electronic device 3300 is capable of providing desired image information (e.g., specific or predetermined image information).

[0170] Figures 9a to 9c The electronic devices shown may have variable shapes, but this disclosure is not limited thereto. Display devices according to some embodiments can be used in electronic devices in which units (e.g., screens) capable of displaying images thereon are fixed.

[0171] Figure 9dA robot 3400 is illustrated as an electronic device according to an embodiment. The robot 3400 can identify motion or objects using a camera unit (e.g., a camera) 3440, and can display desired images (e.g., specific or predetermined images) to a user via display units (e.g., display portions) 3420 or 3430. In some embodiments, as described above, the display device according to the embodiment can be elongated in various directions and can be assembled on a main frame having a hemispherical shape. Therefore, the robot 3400 may include hemispherical display units 3420 and 3430.

[0172] Figure 9e A vehicle display device 3500 is shown as an electronic device according to an embodiment. The vehicle display device 3500 may include an instrument cluster 3510, a center information display (CID) 3520, and / or a passenger display 3530. The display device according to the embodiment can be elongated in various directions, and therefore, the display device can be used as the instrument cluster 3510, the CID 3520, and / or the passenger display 3530 without being limited by the shape of the vehicle's internal frame.

[0173] Figure 9e The instrument panel 3510, CID 3520, and / or passenger display 3530 are shown to be independent of each other, but this disclosure is not limited thereto. In another embodiment, two or more of the instrument panel 350, CID 3520, and passenger display 3530 may be connected to each other as a single unit.

[0174] In some embodiments, the vehicle display device 3500 may include a button 3540 capable of displaying a desired image (e.g., a specific or predetermined image). Reference Figure 9e The enlarged view shows that the hemispherical button 3540 may include an object 3542 that provides tactile feedback for button use while moving in the z-direction or -z-direction, and a display device disposed on the object 3542. In some embodiments, when the object 3542 has a three-dimensional curved surface, the display device may also have a three-dimensional curved surface.

[0175] Figure 9f An electronic device according to an embodiment is shown as an advertising or exhibition electronic device 3600. In some embodiments, the advertising or exhibition electronic device 3600 may be mounted on a fixed structure 3610 such as a wall or pillar. Figure 9f When the structure 3610 shown includes an uneven surface, the advertising or exhibition electronic device 3600 can be arranged along the uneven surface of the structure 3610. In some embodiments, the advertising or exhibition electronic device 3600 can be mounted on the structure 3610 using a heat-shrink film or the like.

[0176] Figure 9g A controller 3700 is shown as an electronic device according to an embodiment. The controller 3700 may include image-type buttons. For example, the controller 3700 may include first to third button areas 3720, 3730, and 3740 in which a portion of the display unit 3710 protrudes in the z-direction or in the -z-direction (or is recessed in the z-direction). In some embodiments, the first button area 3720 and the third button area 3740 may protrude in the z-direction, and the second button area 3730 may protrude in the -z-direction (or be recessed in the z-direction).

[0177] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and are not intended to be limiting. The description of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope as defined by the following claims.

Claims

1. A display device comprising a display area and a non-display area, comprising: substrate; Multiple light-emitting elements are on the substrate; as well as The capping layer includes: A cover frame, on the substrate and comprising an opaque material; and Multiple cover openings are provided within the cover frame to overlap with the multiple light-emitting elements. The plurality of light-emitting elements are positioned at different intervals, and the plurality of cover openings are positioned at equal intervals.

2. The display device according to claim 1, wherein, The plurality of cover openings are symmetrically positioned about a first center line and a second center line, the first center line being a virtual center line passing through the center of the display area in a first direction, and the second center line being a virtual center line passing through the center of the display area in a second direction intersecting the first direction.

3. The display device according to claim 2, wherein, The plurality of light-emitting elements include: Multiple first light-emitting elements are positioned along the first center line; and Multiple second light-emitting elements are spaced apart from the first center line in the second direction and positioned on a line along a first line, which is a virtual line protruding in the second direction.

4. The display device according to claim 3, wherein, The distance between the first centerline and the first line gradually decreases along the first direction based on the second centerline.

5. The display device according to claim 3, wherein, The plurality of light-emitting elements further includes a plurality of third light-emitting elements positioned along a second line, the second line being a virtual line symmetrical to the first line based on the first center line.

6. The display device according to claim 1, wherein, The modulus of the cover frame is less than that of the substrate.

7. The display device according to claim 1, wherein, In the plan view, the size of each of the plurality of cover openings is larger than the size of each of the plurality of light-emitting elements.

8. The display device according to claim 1, wherein, The cover layer further includes a support portion that supports the cover frame from the substrate.

9. The display device according to claim 8, wherein, The support portion includes multiple support portions, and at least one of the multiple support portions is located in the display area.

10. The display device according to claim 1, wherein, The cover frame comprises at least one of thermoplastic polyurethane (TPU), thermoplastic polyethylene (TPE), and silicone rubber.

11. A display device configured to switch between a first structure and a second structure extending from the first structure, comprising: substrate; Multiple light-emitting elements are on the substrate; as well as The capping layer includes: A cover frame, on the substrate and comprising an opaque material; and Multiple cover openings are located within the cover frame to overlap with the multiple light-emitting elements. In the second structure, the distance between the plurality of light-emitting elements is uniform, compared to the distance between the plurality of light-emitting elements in the first structure.

12. The display device according to claim 11, wherein, The plurality of light-emitting elements include: Multiple first light-emitting elements are positioned along a first center line, which is a virtual center line extending in a first direction; and Multiple second light-emitting elements are spaced apart from the first center line in a second direction intersecting the first direction and positioned on a line along a first line, which is a virtual line protruding in the second direction.

13. The display device according to claim 12, wherein, Compared to the curvature of the first line in the first structure, the curvature of the first line is reduced in the second structure.

14. The display device according to claim 12, wherein, Compared to the distance between the first center line and the first line in the first structure, the distance between the first center line and the first line is reduced in the second structure.

15. The display device according to claim 12, wherein, The plurality of light-emitting elements further includes a plurality of third light-emitting elements positioned along a second line, the second line being a virtual line symmetrical to the first line based on the first center line.

16. The display device according to claim 11, wherein, The modulus of the cover frame is less than that of the substrate.

17. The display device according to claim 11, wherein, In the plan view, the size of each of the plurality of cover openings is larger than the size of each of the plurality of light-emitting elements.

18. The display device according to claim 11, wherein, The cover layer further includes a support portion that supports the cover frame from the substrate.

19. The display device according to claim 18, wherein, The support portion includes multiple support portions spaced apart from each other.

20. The display device according to claim 11, wherein, The cover frame comprises at least one of thermoplastic polyurethane (TPU), thermoplastic polyethylene (TPE), and silicone rubber.

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