Display device with improved resolution and display effect due to its irregular pixel structure and spherical shape

Abstract

The present invention relates to a display device in which resolution is improved by an irregular pixel structure and the display effect is enhanced by having a spherical shape.

Description

Technology Field

[0001] The present invention relates to a display device in which resolution is improved by an irregular pixel structure and the display effect is enhanced by having a spherical shape. Background Technology

[0002] Recently, there has been an increasing demand for three-dimensional display devices that can simultaneously secure spatial form and visual attention, going beyond simple flat displays, in outdoor electronic billboards, media facades, digital objects for exhibitions, and immersive experience spaces. In particular, displays with spherical or dome structures have the advantage of ensuring omnidirectional visibility and increasing visual concentration regardless of the viewer's position.

[0003] However, conventional spherical display devices are merely structures in which multiple flat modules are arranged in a simple curved shape, resulting in problems such as visual exposure of the boundaries between panels or reduced perceived resolution due to the pixel arrangement being limited to a regular orthogonal grid structure (RGB serial arrangement). In addition, there were limitations in fully maximizing the display effect due to visual distortions such as viewing angle distortion, aliasing, and color fringing caused by curvature.

[0004] In particular, despite the fact that human vision has relatively high luminance sensitivity to the green wavelength band, conventional technology applied a regular grid structure arranging RGB in equal proportions, which had a problem in that the improvement in perceived resolution relative to spatial resolution was limited.

[0005] Furthermore, conventional spherical display structures had structural limitations in that their internal frame structure was limited to a simple support form, resulting in low freedom of movement for panel mounting positions and making maintenance or panel replacement difficult.

[0006] Therefore, there is a need for a display device having a new pixel array structure and frame structure that can improve perceived resolution and maximize display effects while maintaining a spherical shape. The problem to be solved

[0007] The problem that the present invention aims to solve is to provide a display device with improved resolution due to an irregular pixel structure and enhanced display effect by having a spherical shape.

[0008] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0009] A display device of the present invention for solving the above-described problem may comprise: a base; a column extending upward from the center of the base; a first ring frame, a second ring frame, and a third ring frame arranged spaced apart from each other in a perpendicular direction with respect to the central axis of the column and formed along the circumferential direction; a plurality of curvature frames extending from the bottom of the column to the top of the column via the first ring frame, the second ring frame, and the third ring frame, and arranged along the circumferential direction with respect to the central axis of the column; and a plurality of display panels mounted by the column, the first ring frame, the second ring frame, the third ring frame, and the plurality of curvature frames, wherein each pixel of the plurality of display panels comprises a first subpixel emitting a red wavelength band, a second subpixel and a third subpixel emitting a green wavelength band, and a fourth subpixel emitting a blue wavelength band.

[0010] The first subpixel is arranged adjacent to the second subpixel in a horizontal direction and adjacent to the third subpixel in a vertical direction, and the fourth subpixel is arranged adjacent to the second subpixel in a vertical direction and adjacent to the third subpixel in a horizontal direction, so that the first subpixel and the fourth subpixel are arranged diagonally, and the second subpixel and the third subpixel are arranged diagonally.

[0011] The column and the first ring frame are connected by a plurality of first connectors that extend radially from the column to the first ring frame and are arranged along the circumferential direction, the column and the second ring frame are connected by a plurality of second connectors that extend radially from the column to the second ring frame and are arranged along the circumferential direction, the column and the third ring frame are connected by a plurality of third connectors that extend radially from the column to the third ring frame and are arranged along the circumferential direction, and the first ring frame, the second ring frame, and the third ring frame are sequentially arranged at points that divide the height of the column into three equal parts from the lower side to the upper side of the column.

[0012] The radius of the first ring frame and the third ring frame may be the same, and the radius of the third ring frame may be larger than the radius of the first ring frame and the third ring frame.

[0013] The plurality of display panels may be characterized by being mounted at the upper and lower points of the column and at the intersection points of the first ring frame, the second ring frame, the third ring frame, and the plurality of curvature frames. Effects of the invention

[0014] The display device according to the present invention can improve perceived resolution by adopting a sub-pixel configuration having an irregular diagonal arrangement structure, thereby providing an effect similar to an increase in visual sampling density within the same area.

[0015] In particular, by configuring two green subpixels and arranging them diagonally, it is possible to create an expression that reflects the luminance sensitivity characteristics of human vision, and as a result, the effect of improving visual detail expression can be achieved without reducing the physical pixel pitch.

[0016] In addition, as subpixels are arranged diagonally, staircasing and color fringing occurring at slanted edges can be mitigated, and the uniformity of color reproduction and image clarity can be simultaneously improved through matching with a subpixel rendering algorithm.

[0017] In addition, by adopting a spherical structure composed of columns, ring frames, and multiple curved frames, omnidirectional visibility is ensured, distortion depending on the viewing position is minimized, and the spatial exhibition effect is maximized.

[0018] Furthermore, through the structure of multiple ring frames and radial connectors, the mounting stability of the display panel is enhanced, and the ease of detachment and maintenance of the panel results in improved structural reliability and constructability.

[0019] Consequently, by simultaneously realizing spherical aesthetics and high-resolution expression, the present invention provides the effect of significantly enhancing visual immersion and commercial utility in exhibition, advertising, and public media environments.

[0020] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0021] FIG. 1 is a perspective view showing the display device of the present invention installed. FIG. 2 is a conceptual diagram showing the base and column of the display device of the present invention. FIG. 3 is a conceptual diagram showing a plurality of display panels detached from the display device of the present invention. FIG. 4 is a conceptual diagram showing pixels of a plurality of display panels of the display device of the present invention. Specific details for implementing the invention

[0022] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the present invention, and the present invention is defined only by the scope of the claims.

[0023] The terms used in this specification are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. The terms "comprises" and / or "comprising" used in this specification do not exclude the presence or addition of one or more other components in addition to the components mentioned. Throughout the specification, the same reference numerals refer to the same components, and "and / or" includes each of the mentioned components and all combinations of one or more. Although terms such as "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical scope of the invention.

[0024] Unless otherwise defined, all terms used herein (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0026] Hereinafter, the configuration and operation of the display device (100) of the present invention will be described in detail with reference to FIGS. 1 to 4. The display device (100) of the present invention is a display having a spherical shape and may include a base (10), a column (11) extending upward from the center of the base (10), a first ring frame (12-1), a second ring frame (12-2), and a third ring frame (12-3) formed along the circumferential direction with the central axis of the column (11), a plurality of curvature frames (13) arranged to form the outer curvature of the sphere along the column (11) and the ring frames (12-1, 12-2, 12-3), and a plurality of display panels (20) mounted by the column (11), the ring frames (12-1 to 12-3), and the curvature frames (13).

[0027] Referring to FIG. 1, the display device (100) has a spherical display formed on a base (10) installed on the floor surface, and a plurality of display panels (20) are arranged along the outer edge of the sphere so that the display effect can be maximized regardless of which direction the user views it from.

[0028] The base (10) can be implemented in various forms, such as a disc type, a polygonal plate type, a ring type, or a frame type including a rib structure, and may further include an anchor fastening part (not shown), a leveling part (not shown), or a vibration reduction part (not shown) depending on the installation environment. In addition, a power supply part (not shown), a control part (not shown), a communication part (not shown), a cooling part (not shown), etc., may be accommodated inside or below the base (10), and these components may be configured to be accessible through a cover or inspection window (not shown) of the base (10) for ease of maintenance.

[0029] Referring to FIG. 2, the column (11) is a support structure extending upward from the center of the base (10) and supports the load of a spherical frame and a plurality of display panels (20). The column (11) can be implemented as a single cylindrical, multi-stage, truss-type, or hollow structure with a cable duct formed inside, and a wiring path (not shown) can be formed inside the column (11) to allow power lines, data lines, ground lines, and control signal lines to pass through.

[0030] The column (11) may form reference points at the top and bottom of the spherical frame by including an upper connecting part (not shown) at the top and a lower connecting part (not shown) at the bottom, and a bracket fastening part (not shown) or a connector fixing part (not shown) for panel mounting may be further formed on the outer surface or inside of the column (11).

[0031] The first ring frame (12-1), the second ring frame (12-2), and the third ring frame (12-3) are annular frames formed along the circumferential direction with respect to the central axis of the column (11), and can be sequentially arranged at points that divide the column height into three equal parts from the lower side to the upper side of the column (11). Specifically, the first ring frame (12-1) can be placed relatively lower, the second ring frame (12-2) can be placed between the first ring frame (12-1) and the third ring frame (12-3), and the third ring frame (12-3) can be placed relatively upper.

[0032] At this time, the radii of the first ring frame (12-1) and the third ring frame (12-3) can be set to be the same, and the radius of the second ring frame (12-2) can be set to be larger than the radii of the first ring frame (12-1) and the third ring frame (12-3), so that the maximum diameter portion of the sphere is formed near the second ring frame (12-2). This radius relationship is advantageous for forming a smooth outer edge of the sphere and at the same time securing an even placement area of ​​the panel (20).

[0033] The ring frames (12-1 to 12-3) and the column (11) may be connected by a plurality of connectors that extend radially. For example, a plurality of first connectors (not shown) extending radially from the column (11) to the first ring frame (12-1), a plurality of second connectors (not shown) extending radially from the column (11) to the second ring frame (12-2), and a plurality of third connectors (not shown) extending radially from the column (11) to the third ring frame (12-3) may each be formed, and each connector may be arranged at equal intervals in the circumferential direction, or may be arranged at unequal intervals considering panel placement density or structural rigidity. The connectors may be implemented in various forms such as plate-type brackets, pipe-type spacers, truss-type links, or assembly-type ribs, and the fastening method may include bolt fastening, pin connection, welding, rivet, or clamp fastening.

[0034] A plurality of curvature frames (13) are longitudinal (vertical) or inclined frames forming a spherical outer edge, and can be arranged in a manner that starts from the bottom of the column (11), passes through the first ring frame (12-1), the second ring frame (12-2), and the third ring frame (12-3), and then extends to the top of the column (11). That is, the curvature frames (13) have curvature so as to extend along the curved surface of the sphere overall, and a plurality of them are arranged along the circumferential direction to form a spherical grid frame.

[0035] Multiple curved frames (13) may be composed of a single curved member, or they may be configured such that multiple segmented members are assembled to form a single curve for ease of manufacturing and transportation. Additionally, at the intersection points of the multiple curved frames (13) and the ring frames (12-1 to 12-3), a joining plate (not shown), a reinforcing rib (not shown), or a fastening block (not shown) may be further included to reinforce structural rigidity.

[0036] A plurality of display panels (20) are a plurality of display modules mounted on a spherical frame and can be configured to be supported at mounting reference points formed at the upper and lower points of the column (11) and at the intersection points of the first ring frame (12-1), the second ring frame (12-2), the third ring frame (12-3) and the curvature frame (13).

[0037] That is, the plurality of display panels (20) may be configured in a polygonal shape (e.g., rectangle, rhombus, trapezoid, or curved rectangle) to cover the opening area between the curvature frames (13), implemented as curved panels with fine curvatures along the curvature of the sphere, or may be arranged so as to approximate a sphere overall by combining a plurality of flat panels.

[0038] In this case, the back surface of the plurality of display panels (20) may be in contact with the first ring frame (12-1), the second ring frame (12-2), the third ring frame (12-3), and the plurality of curvature frames (13), and may be supported at the upper and lower points of the column (11), and at the mounting reference points formed at the intersection points of the first ring frame (12-1), the second ring frame (12-2), the third ring frame (12-3), and the curvature frames (13).

[0039] In this case, for mounting a plurality of display panels (20), a panel bracket (not shown), a rail (not shown), a hinge joint (not shown), or a quick-release fastening part (not shown) may be provided at the upper and lower points of the column (11) and at the intersection points of the first ring frame (12-1), the second ring frame (12-2), the third ring frame (12-3), and the curvature frame (13), and a corresponding joint part (not shown) may be formed on the panel (20) side to facilitate easy attachment and detachment.

[0040] Electrical connections of multiple display panels (20) can be made through internal wiring of the column (11) and connectors of the panel mounting part. For example, power and data may be branched from inside the column (11) to an intersection point of a ring frame or a curved frame, and configured to be automatically connected when the panel (20) is mounted by a blind mate connector (not shown) or a pogo pin connector (not shown) provided at that point.

[0041] Accordingly, when the panel (20) is removed during maintenance, the power and data connections are simultaneously disconnected, and when the panel (20) is reinstalled, automatic connection is possible without separate cable work. In addition, to reduce electromagnetic interference, a grounding path (not shown) may be formed through the base (10) or column (11), and a fuse or cutoff part (not shown) for overcurrent protection and a surge protection part (not shown) may be further included.

[0042] Each of the plurality of display panels (20) includes a plurality of pixels (21), and each pixel (21) may include a first subpixel (21-1) that emits a red wavelength band, a second subpixel (21-2) and a third subpixel (21-3) that emit a green wavelength band, and a fourth subpixel (21-4) that emits a blue wavelength band. At this time, the arrangement of the subpixels may not be a uniform arrangement by a regular orthogonal grid, but may be arranged to have an irregular structure that intersects in a diagonal direction as shown in FIG. 4. Specifically, the first subpixel (21-1) is positioned to be adjacent to the second subpixel (21-2) in a horizontal direction and adjacent to the third subpixel (21-3) in a vertical direction, and the fourth subpixel (21-4) is positioned to be adjacent to the second subpixel (21-2) in a vertical direction and adjacent to the third subpixel (21-3) in a horizontal direction, so that the first subpixel (21-1) and the fourth subpixel (21-4) are arranged diagonally and the second subpixel (21-2) and the third subpixel (21-3) are arranged diagonally.

[0043] The irregular diagonal arrangement described above provides an effect similar to increasing the number of visual sampling points within the same area, which can reduce pixel boundary awareness and improve perceived resolution. In particular, by configuring the green subpixels into two, the expressiveness of the green component, which contributes significantly to luminance, is enhanced, thereby improving visual clarity. Additionally, the diagonal intersection arrangement is advantageous for mitigating staircasing at slanted edges and reducing color fringing, which enables high-resolution and high-quality image representation in exhibition environments.

[0044] Meanwhile, the display device (100) may further include image processing and correction functions to accommodate irregular sub-pixel arrangements. For example, a control unit (not shown) may perform a sub-pixel rendering algorithm (not shown) to match the sampling coordinates of an input image to a sub-pixel spatial arrangement, and may be configured to achieve uniform color reproduction and distortion reduction by applying a gamma correction table (not shown), a color correction table (not shown), and a geometric distortion correction table (not shown) per panel (20) or per spherical surface coordinate system. Additionally, since pixel density may be perceived as non-uniform depending on the viewing position due to the characteristics of the spherical surface, the control unit (not shown) may improve visual homogeneity across the entire surface by performing region-specific luminance correction, region-specific color temperature correction, and region-specific edge correction.

[0045] In addition, since thermal management is important due to the operational characteristics of the spherical display, a heat dissipation unit (not shown), an air passage (not shown), a fan (not shown), or a heat sink (not shown) may be further included inside the panel (20) or frame, and may be configured to limit brightness or partial operation in the event of overheating in conjunction with a temperature sensor (not shown). Furthermore, in order to reduce the impact on the overall screen quality of a specific panel failure or communication failure in a structure where multiple panels (20) are distributed, a panel status monitoring unit (not shown), an error detection unit (not shown), and a faulty panel bypass operation logic (not shown) may be further included.

[0046] As described above, the display device (100) of the present invention can improve perceived resolution and visual quality while securing an all-around display effect, and improve the mounting stability and maintainability of the panel by combining a spherical frame structure and an irregular sub-pixel array.

[0047] Meanwhile, in the display device (100) of the present invention, a first coating layer (not shown) may be formed at a point in contact with the back surface of a plurality of display panels (20) of the first ring frame (12-1), the second ring frame (12-2), and the third ring frame (12-3), and the first coating layer may be configured to perform an anti-slip function by using a bio-polyurethane resin made of a polyol containing cardanol as a matrix.

[0048] Cardanol is a phenolic compound isolated from cashew nut shell liquid (CNSL), and has a structure with a 3-pentadecylphenol basic backbone and a C15 alkyl chain (saturated or partially unsaturated) at the 3rd position of the benzene ring. It can generally be converted into a polyol form through epoxidation or alkoxylation reactions and used, and cardanol-based polyols react with isocyanates to form polyurethane resins.

[0049] At this time, the first coating layer may further include surface-modified silica nanoparticles and hollow (microballoon) polymer microparticles to improve the friction coefficient and contact stability.

[0050] Specifically, surface-modified silica nanoparticles may include at least one of fumed silica or colloidal silica, and may be applied in a form surface-modified by a silane coupling agent.

[0051] For example, the silane coupling agent may include at least one of 3-aminopropyltriethoxysilane (APTES), 3-glycidyloxypropyltrimethoxysilane (GPTMS), or vinyltriethoxysilane (VTES), and the silane coupling agent may be chemically bonded to the surface of silica nanoparticles to suppress the aggregation of silica and improve interfacial bonding strength with the polyurethane matrix.

[0052] By including silane-modified silica nanoparticles in this way, a micro-roughness (micro-texture) is formed on the surface of the first coating layer, and the static friction characteristics between the ring frame (12-1, 12-2, 12-3) and the display panel (20) are increased, thereby suppressing the sliding of the panel (20).

[0053] Additionally, the hollow (microballoon) polymer microparticles may include hollow spherical particles made of a thermoplastic polymer or copolymer, and may be configured to increase the contact area by absorbing fine step and tolerance on the back surface of the panel (20).

[0054] For example, the microballoon polymer microparticles may include hollow microspheres based on polyvinylidene chloride (PVDC) and acrylonitrile (AN) copolymer or poly(methyl methacrylate) (PMMA), and may also be configured to include hollow microspheres based on ethylene-vinyl acetate (EVA) as needed.

[0055] Hollow microparticles induce micro-elastic deformation when a compressive load is applied, thereby improving contact stability between the back surface of the panel (20) and the ring frame (12-1, 12-2, 12-3) and reducing the accumulation of positional errors caused by creep and micro-movement that may occur during long-term use.

[0056] Accordingly, the first coating layer according to the present invention can secure the anti-slip performance of the display panel (20) without a separate mechanical protrusion structure by (i) securing adhesion and flexibility to the ring frame by a cardanol-based bio-polyurethane resin, (ii) improving the friction coefficient and surface texture by silica nanoparticles surface-modified with APTES, GPTMS, or VTES, and (iii) providing tolerance absorption and increased contact area effects by hollow microballoon polymer microparticles based on PVDC-AN copolymer or PMMA.

[0057] A second coating layer (not shown) may be formed at a point in contact with the back surface of a plurality of display panels (20) on a plurality of curved frames (13). The second coating layer may be configured to perform a heat dissipation function to efficiently transfer and diffuse heat generated from the display panels (20) to the curved frames (13), and may be formed from a composite composition comprising a silicon-epoxy hybrid binder, hexagonal boron nitride (h-BN) flakes, and fine copper-coated graphite powder.

[0058] The silicone-epoxy hybrid binder may have a structure in which an epoxy resin and a siloxane-based resin are mixed or copolymerized, for example, it may be a hybrid binder comprising a bisphenol A-based epoxy resin (diglycidyl ether of bisphenol A, DGEBA) and an amino-functional siloxane or a methylphenyl siloxane. The binder simultaneously ensures the adhesion properties of the epoxy groups to the metal surface and the heat resistance and weather resistance of the silicone chains, thereby suppressing peeling, cracking, or deterioration of the coating layer even in environments of long-term operation or outdoor display. The glass transition temperature (Tg) of the binder may be in the range of 60°C to 150°C, and the thermal decomposition temperature may be 250°C or higher.

[0059] Hexagonal boron nitride (h-BN) flakes are ceramic fillers having a layered structure that provide high thermal conductivity while maintaining electrical insulation properties. For example, they can be applied in the form of plate-like flakes with an average particle size ranging from 1 μm to 50 μm, and the in-plane thermal conductivity can be 200 W / m·K or higher. The h-BN forms a thermal pathway within the coating layer to efficiently guide heat transferred from the rear surface of the display panel (20) to the curved frame (13). In particular, by maintaining electrical insulation, the possibility of leakage current occurring between the frame and the panel can be reduced.

[0060] Fine copper-coated graphite powder may be a composite powder in which a copper layer is formed on the surface of graphite particles by electrolytic or electroless plating. For example, copper-coated graphite powder with an average particle size in the range of 5 μm to 100 μm may be applied. Graphite has high thermal conductivity in the in-plane direction, and the copper coating layer reduces the interfacial thermal resistance with the metal frame, thereby improving thermal diffusion performance. Accordingly, the insulating thermal conduction path formed by h-BN and the interfacial heat transfer enhancement effect by the copper-coated graphite act complementarily, enabling superior thermal diffusion performance compared to a single ceramic filler coating layer of the same thickness.

[0061] The second coating layer may have a coating thickness in the range of 50 μm to 500 μm and may be formed by spray coating, dipping coating, or roll coating.

[0062] The second coating layer configured in this way rapidly transfers heat generated from the rear of the panel to the curved frame (13) even under natural convection conditions that may be limited as a plurality of display panels (20) are densely arranged in the spherical display device (100), and allows the heat to be released to the outside through the frame, thereby preventing overheating of the panel.

[0063] As a result, reliability issues such as brightness degradation, color deviation, and reduced component lifespan can be reduced, and stable heat dissipation performance can be maintained over a long period by preventing cracking or peeling of the coating layer itself.

[0065] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

Claim 1 A base; a column extending upward from the center of the base; a first ring frame, a second ring frame, and a third ring frame arranged spaced apart from each other in a perpendicular direction with respect to the central axis of the column and formed along the circumferential direction; a plurality of curvature frames extending from the bottom of the column to the top of the column via the first ring frame, the second ring frame, and the third ring frame, and arranged along the circumferential direction with respect to the central axis of the column; and includes a plurality of display panels mounted by the column, the first ring frame, the second ring frame, the third ring frame, and the plurality of curvature frames, wherein each pixel of the plurality of display panels includes a first subpixel emitting a red wavelength band, a second subpixel emitting a green wavelength band, a third subpixel emitting a blue wavelength band, and a fourth subpixel emitting a blue wavelength band, wherein the column and the first ring frame are connected by a plurality of first connectors that extend radially from the column to the first ring frame and are arranged along the circumferential direction, wherein the column and the second ring frame are connected by a plurality of second connectors that extend radially from the column to the second ring frame and are arranged along the circumferential direction, wherein the column and the third ring frame are connected by a plurality of third connectors that extend radially from the column to the third ring frame and are arranged along the circumferential direction, and wherein the first ring frame, the second ring frame, and the third ring frame extend from the lower side of the column to the upper side, the height of the column They are arranged sequentially at points divided into three equal parts, the radii of the first ring frame and the third ring frame are the same, the radius of the second ring frame is larger than the radii of the first ring frame and the third ring frame, the plurality of display panels are mounted at the upper and lower points of the column and at the intersection points of the first ring frame, the second ring frame, the third ring frame, and the plurality of curvature frames, and a first coating layer is formed at the point where the first ring frame, the second ring frame, and the third ring frame contact the back surface of the plurality of display panels.The first coating layer is formed of a bio-polyurethane resin prepared with a polyol containing cardanol, surface-modified silica nanoparticles, and hollow polymer microparticles, wherein the surface-modified silica nanoparticles are fumed silica and colloidal silica surface-modified by 3-aminopropyltriethoxysilane (APTES), 3-glycidyloxypropyltrimethoxysilane (GPTMS), and vinyltriethoxysilane (VTES), and the hollow polymer microparticles are polyvinylidene chloride (PVDC) and acrylonitrile (AN) copolymers, and a second coating layer is formed at a point in the plurality of curved frames that contacts the back surface of the plurality of display panels. A display device characterized in that the second coating layer is formed from a composite composition comprising a silicon-epoxy hybrid binder, hexagonal boron nitride (h-BN) flakes, and fine copper-coated graphite powder, the silicon-epoxy hybrid binder is formed from a bisphenol A-based epoxy resin (diglycidyl ether of bisphenol A, DGEBA) and an amino-functional siloxane, and the coating thickness of the second coating layer is 50 μm to 500 μm. Claim 2 A display device according to claim 1, wherein the first subpixel is arranged adjacent to the second subpixel in a horizontal direction and adjacent to the third subpixel in a vertical direction, and the fourth subpixel is arranged adjacent to the second subpixel in a vertical direction and adjacent to the third subpixel in a horizontal direction, such that the first subpixel and the fourth subpixel are arranged diagonally, and the second subpixel and the third subpixel are arranged diagonally. Claim 3 delete Claim 4 delete Claim 5 delete

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