Fixing frame for display device

Abstract

Embodiments of the present invention may provide a fixed frame for a display device comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each coupling groove, with a receiving groove formed on one surface exposed to the outside of the coupling groove; and a magnet member inserted into the receiving groove.

Description

Technology Field

[0001] The present invention relates to a fixed frame for a display device. Background Technology

[0002] Generally, digital signage refers to a communication tool capable of driving corporate marketing, advertising, training effects, and customer experience; it is a display device that provides specific information as well as broadcast programs in public places such as airports, hotels, hospitals, and subway stations.

[0003] Digital signage is a medium that displays various content and commercial advertisements by installing display devices, such as Liquid Crystal Displays (LCDs), Plasma Display Panels (PDPs), Field Emission Displays (FEDs), and Organic Light Emitting Displays (OLEDs), in designated outdoor locations or on street furniture. For example, digital signage displays can be installed along all routes where the public moves, such as in elevators, subways, buses, banks, convenience stores, and shopping malls.

[0004] Meanwhile, since digital signage display devices are primarily secured using magnetic force, there was a problem where visibility was reduced in areas with a lot of metal dust, such as subway stations, where floating iron dust adhered to the display panels where the magnets were located.

[0005] In addition, when configuring a single screen using multiple display panels, there was a problem where screen distortion occurred due to height differences between adjacent display panels in the vertical or horizontal directions. The problem to be solved

[0006] Embodiments of the present invention can provide a fixed frame for a display device that prevents metal powder from adhering to a display panel by shielding the magnetic force generated between the display panel and the magnet member by providing a shielding member on the back surface of the display panel.

[0007] Embodiments of the present invention provide a fixed frame for a display device that can prevent the problem of screen distortion caused by a height difference between adjacent display panels when implementing digital signage, by forming a shielding member equipped with a magnet member so that its position is adjusted in the direction in which the display panel is located.

[0008] The problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0009] Embodiments of the present invention may provide a fixed frame for a display device comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each coupling groove, with a receiving groove formed on one surface exposed to the outside of the coupling groove; and a magnet member inserted into the receiving groove. Effects of the invention

[0010] According to embodiments of the present invention, a fixed frame for a display device can be provided that prevents metal powder from adhering to a display panel by shielding the magnetic force generated between the display panel and the magnet member by providing a shielding member on the back surface of the display panel.

[0011] According to embodiments of the present invention, a fixed frame for a display device can be provided, which prevents the problem of screen distortion caused by a step difference between adjacent display panels when implementing digital signage, by forming a shielding member equipped with a magnet member so that its position is adjusted in the direction in which the display panel is located.

[0012] The effects of the embodiments of the present invention are not limited to those mentioned herein, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0013] FIG. 1 is a perspective view of a fixed frame for a display device according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of a fixed frame for a display device shown in FIG. 1. Figure 3 is a drawing showing the fixed frame of Figure 1 installed on a display panel. Figure 4 is a drawing showing the state in which the fixed frame of Figure 3 is attached to the wall mount by magnetic force. FIG. 5 is a perspective view of a magnet member according to one embodiment of the present invention. Figure 6 is a schematic diagram illustrating the magnetic field distribution of the magnet member shown in Figure 5. Figure 7 is a schematic diagram illustrating the magnetic field distribution of a magnet member according to a comparative example. FIG. 8 is an image showing the degree of adhesion of metal powder when a wall mount is provided on the back surface of a fixed frame according to an embodiment of the present invention. FIG. 9 is an image showing the degree of adhesion of metal powder when a wall mount is provided on the back surface of a fixed frame according to a comparative example of the present invention. FIG. 10 is an exploded perspective view showing a part of a fixed frame according to an embodiment of the present invention. FIG. 11 is a cross-sectional perspective view showing a part of a fixed frame according to an embodiment of the present invention. FIG. 12 is a drawing showing the state in which the position of the shielding member shown in FIG. 11 has been changed. FIG. 13 is an exploded perspective view of a fixed frame for a display device according to another embodiment of the present invention. FIG. 14 is a cross-sectional perspective view of a fixed frame for a display device shown in FIG. 13. Specific details for implementing the invention

[0014] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0015] The suffixes "module" and "part" for components used in the following description are assigned or used interchangeably solely for the sake of ease of drafting the specification, and do not inherently possess distinct meanings or roles. Furthermore, in describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions could obscure the essence of the embodiments disclosed in this specification.

[0016] In addition, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0017] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0018] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0019] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0020] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0021] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings.

[0022] FIG. 1 is a perspective view of a fixed frame for a display device according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of the fixed frame for a display device shown in FIG. 1, and FIG. 3 is a drawing showing the fixed frame of FIG. 1 installed on a display panel.

[0023] Referring to FIGS. 1 to 3, a fixed frame (100) for a display device may include a support member (110), a shielding member (120), and a magnet member (130). Here, the fixed frame (100) may be installed on the back of a display device for implementing digital signage and used for fixing to a wall or facility.

[0024] A support member (110) is fixed to a display panel (10), and a plurality of coupling grooves (111) may be formed on one surface. For example, the support member (110) may be formed in the shape of a rectangular plate with a long length in one direction, and a plurality of circular coupling grooves (111) may be provided on the opposite side facing the display panel (10) and spaced apart in one direction. Here, the coupling grooves (111) may be formed in a structure in which a ring-shaped projection (112) is formed protruding from the back surface of the support member (110), or in a structure in which a part of the support member (110) is recessed in a circular shape.

[0025] Meanwhile, in a digital signage system, a single screen can be formed by connecting multiple display panels (10), and a support member (110) can be connected to the back surface of each display panel (10) through a fastening member such as a bolt to support the display panel (10). Here, the front side refers to the direction in which the display surface where an image is output from the display panel (10) is located, and the back side may refer to the opposite direction.

[0026] The shielding member (120) is formed of a material that shields magnetic force and can be inserted into the coupling groove (111). For example, the shielding member (120) can be formed of a metal material such as stainless steel, aluminum, or magnesium to shield the magnetic force generated from the magnet member (130) described later.

[0027] A receiving groove (121) may be formed on one side of the shielding member (120) that is exposed to the outside of the coupling groove (111). For example, a portion of the back surface of the shielding member (120) may be recessed to form a receiving groove (121) on the back surface, and the front surface may be seated and coupled within the coupling groove (111) while facing the coupling groove (111). Accordingly, the front and side surfaces of the shielding member (120) are inserted into the coupling groove (111), and the back surface where the receiving groove (121) is formed may be exposed to the outside.

[0028] The magnet member (130) may be formed of a magnetic material and may be inserted into the receiving groove (121). For example, the magnet member (130) may be formed in a shape corresponding to the receiving groove (121) and may be formed to have at least one N pole and one S pole so as to be attached to a desired structure by magnetic force.

[0029] Meanwhile, although the fixed frame (100) can be attached to and fixed to the structure by the magnetic force of the magnet member (130), there is a problem in that fine metal particles in the surrounding area adhere to the front of the display panel (10) where the magnet member (130) is located, thereby reducing the visibility of the display panel (10). In particular, this problem can be further exacerbated because numerous iron particles are floating and drifting around inside subway stations.

[0030] Accordingly, in this embodiment, by placing a shielding member (120) for shielding magnetic force between a support member (110) and a magnet member (130) positioned at the rear of the display panel (10), the problem of metal powder adhering to the display panel (10) can be solved.

[0031] Figure 4 is a drawing showing the state in which the fixed frame of Figure 3 is attached to the wall mount by magnetic force.

[0032] Referring to FIG. 4, the fixed frame (100) can be installed on a desired structure using a metal wall mount (1). For example, after fixing the metal wall mount (1) to a wall in a subway station, if a support member (110) located on the back of the display panel (10) is brought into contact with the wall mount (1), the display panel (10) can be detachably fixed to the wall by the magnetic force of the magnet member (130).

[0033] Meanwhile, if the wall mount (1) is formed of a metal material, the magnetic field of the magnet member (130) may be affected, and the shielding efficiency of the shielding member (120) may be reduced. Therefore, a structure of the magnet member (130) capable of reducing the influence of the wall mount (1) is required.

[0034] FIG. 5 is a perspective view of a magnet member according to an embodiment of the present invention, FIG. 6 is a schematic diagram illustrating the magnetic field distribution of the magnet member shown in FIG. 5, and FIG. 7 is a schematic diagram illustrating the magnetic field distribution of a magnet member according to a comparative example. Here, the magnet member (130') according to the comparative example of FIG. 7 differs only in that one N pole and one S pole are arranged in different layers, respectively, and the shape and size are identical to the magnet member (130) according to an embodiment of the present invention.

[0035] Referring to FIG. 5, the magnet member (130) may be a circular magnet having a structure in which N poles and S poles are alternately arranged on the same layer. In other words, the magnet member (130) may have a plurality of N poles and S poles alternately arranged on one layer. In this embodiment, it is illustrated that two N poles and two S poles are alternately arranged, but more than that may be provided and alternately arranged.

[0036] In this way, when the magnet member (130) has a structure in which the N pole and the S pole are alternately arranged on the same layer, as shown in FIG. 6, the magnetic field has a structure in which the magnetic field spreads outward from the center where the N pole and the S pole meet, so even if a metal wall mount (1) is located on the back surface of the magnet member (130), it can have an even adhesion force overall, and the magnetic field can be stably shielded by the shielding member (120).

[0037] On the other hand, as shown in FIG. 7, in the case where the structure has one S pole disposed in the first layer and one N pole disposed in the second layer, the magnetic field has a structure in which the magnetic field spreads widely from the sides of the N pole and the S pole to the center, so the distribution of the magnetic field can be larger than that of FIG. 6. Therefore, in the case where a metal wall mount (1) having shielding power is located on the back surface of the magnetic member (130') of the comparative example in which the N pole and the S pole are disposed in different layers, the distribution of the magnetic field becomes larger toward the display panel (10), so the shielding efficiency of the shielding member (120) may be reduced.

[0038] FIG. 8 is an image showing the degree of adhesion of metal powder when a wall mount is provided on the back surface of a fixed frame according to an embodiment of the present invention, and FIG. 9 is an image showing the degree of adhesion of metal powder when a wall mount is provided on the back surface of a fixed frame according to a comparative example of the present invention. Here, the thickness of the magnet member (130, 130') is 2 mm and the diameter is 15 mm, and the thickness of the shielding member (120) is 1.5 mm, so they are all the same, and the metal powder may be iron (Fe) powder.

[0039] As shown in FIGS. 8 and 9, in the case of a comparative example having a magnet member (130') with N and S poles arranged on different layers, it can be seen that metal powder adheres to the shielding member (120) (see FIG. 8). On the other hand, in the case of an embodiment having a magnet member (130) with N and S poles arranged alternately on the same layer, it can be seen that almost no metal powder adheres to the shielding member (120) (see FIG. 9).

[0040] In this way, when a magnet member (130) with alternating N and S poles arranged on the same layer is applied, even if the metal wall mount (1) is placed on the back of the fixed frame (100), it is possible to prevent metal powder from adhering to the display panel (10) located at the front.

[0041] FIG. 10 is an exploded perspective view showing a part of a fixed frame according to an embodiment of the present invention, and FIG. 11 is a cross-sectional perspective view showing a part of a fixed frame according to an embodiment of the present invention.

[0042] Referring to FIGS. 10 and 11, the support member (110) may include a fixed part (113) and a connecting part (114).

[0043] The fixing part (113) may be provided in pairs and fixed to the back surface of the display panel (10). For example, the fixing part (113) may be formed long in the width direction of the display panel (10) and spaced apart from each other to be fixed to the back surface of the display panel (10).

[0044] The connecting portion (114) is spaced apart from the display panel (10) at a predetermined interval to connect a pair of fixing portions (113), and a plurality of connecting groove portions (111) may be arranged side by side on one surface. That is, the connecting portion (114) connects a pair of fixing portions (113) and may be spaced apart from the display panel (10) by the height of the fixing portion (113). For example, the height of the fixing portion (113) may be formed to be about 3 to 10 mm.

[0045] The connecting portion (114) may include a protrusion (115) formed by a portion of the bottom surface where the coupling groove (111) is formed protruding toward the display panel (10). For example, the protrusion (115) may be formed to protrude at a height lower than that of the fixing portion (113) so as not to interfere with the display panel (10), and a first fastening hole (115a) with a screw thread formed in one direction may be formed on the inner surface.

[0046] Meanwhile, the protrusion (115) can be coupled to the magnet member (130) and the shielding member (120) through a fastening member (140), such as a bolt. For example, the shielding member (120) may include a second fastening hole (120a) with screw threads formed in the opposite direction at a portion corresponding to the first fastening hole (115a), and the magnet member (130) may include a third fastening hole (130a) at a portion corresponding to the second fastening hole (120a). At this time, the diameter of the second fastening hole (120a) may be formed to be larger than the diameter of the first fastening hole (115a) and smaller than the diameter of the third fastening hole (130a).

[0047] Corresponding to the shapes of the first fastening hole (115a), the second fastening hole (120a), and the third fastening hole (130a), the fastening member (140) may include a head portion (141), a first fastening portion (142), and a second fastening portion (143). For example, the second fastening portion (143) may extend from one side of the head portion (141), and screw threads in the same direction as the second fastening hole (120a) may be formed on its outer surface. The first fastening portion (142) may extend from one side of the second fastening portion (143), and screw threads in the same direction as the first fastening hole (115a) may be formed on its outer surface. That is, if a right-hand thread is formed in the first fastening hole (115a), a right-hand thread is also formed in the first fastening part (142), and if a left-hand thread is formed in the second fastening hole (120a), a left-hand thread can also be formed in the second fastening part (143). At this time, the diameter of the second fastening part (143) can be formed to be larger than the diameter of the first fastening part (142) and smaller than the diameter of the head part (141).

[0048] Accordingly, the first fastening part (142) and the second fastening part (143) can be screw-coupled to the first fastening hole (115a) and the second fastening hole (120a), respectively, while the head part (141) is seated on the magnet member (130) through the third fastening hole (130a).

[0049] FIG. 12 is a drawing showing the state in which the position of the shielding member shown in FIG. 11 has been changed.

[0050] Referring to FIG. 12, the shielding member (120) can be formed to be height-adjustable in the direction in which the display panel (10) is located within the coupling groove (111).

[0051] Since the display device for digital signage has a structure in which multiple display panels (10) are arranged in the up-down and left-right directions to form a single screen, if there is a curvature in the back structure to which the display panels (10) are attached, a step difference may occur between adjacent display panels (10), causing distortion of the screen.

[0052] As in the present embodiment, when the height of the shielding member (120) is formed to be adjustable in the direction in which the display panel (10) is located, the height difference between adjacent display panels (10) can be compensated, thereby preventing screen distortion.

[0053] For example, when the second fastening part (143) of the fastening member (140) is coupled to the second fastening hole (120a) of the shielding member (120), and the first fastening part (142) is coupled to the first fastening hole (115a) of the protrusion (115), the first fastening part (142) can move linearly within the first fastening hole (115a) when the fastening member (140) is rotated clockwise or counterclockwise. Accordingly, the shielding member (120) coupled to the second fastening part (143) can move by the length of the first fastening part (142) and its height can be adjusted. At this time, since a step is provided between the first fastening part (142) and the second fastening part (143) and screw threads are formed in opposite directions, the loosening of the shielding member (120) coupled first can be prevented when the fastening member (140) is rotated in one direction.

[0054] FIG. 13 is an exploded perspective view of a fixed frame for a display device according to another embodiment of the present invention, and FIG. 14 is a cross-sectional perspective view of the fixed frame for a display device shown in FIG. 13. In this embodiment, the differences from the previously described embodiment will be explained in detail.

[0055] Referring to FIGS. 13 and 14, a fixed frame (200) for a display device may include a support member (110), a shielding member (120), and a magnet member (130).

[0056] The support member (110) may include a fixing part (113) that is fixed to the back surface of the display panel (10) and a connecting part (114) that is spaced apart from the display panel (10) at a predetermined interval and connects the pair of fixing parts (113) and has a plurality of connecting grooves (111) formed on one surface.

[0057] The connecting portion (114) may include a protrusion (115) formed by a portion of the bottom surface where the coupling groove (111) is formed protruding toward the display panel (10). For example, the protrusion (115) may be formed to protrude at a height lower than that of the fixing portion (113) so as not to interfere with the display panel (10), and a first fastening hole (115a) with a screw thread formed in one direction may be formed on the inner surface.

[0058] The shielding member (120) may be formed of a material that shields magnetic force and may be provided in multiple numbers and each inserted into a coupling groove (111). For example, the shielding member (120) may have a receiving groove (121) formed on its back surface and may include a step adjustment part (122) that is screw-coupled to a first fastening hole (115a) in the center of its front surface.

[0059] The step adjustment part (122) can protrude from the front of the shielding member (120) in the direction where the display panel (10) is located, and screw threads in the same direction as the first fastening hole (115a) are formed on the outer surface so that it can be screw-coupled within the first fastening hole (115a). Accordingly, when the shielding member (120) is rotated clockwise or counterclockwise, the step adjustment part (122) moves linearly within the first fastening hole (115a), so the height of the shielding member (120) can be adjusted.

[0060] Accordingly, when implementing digital signage, the height difference between adjacent display panels (10) can be compensated, thereby preventing screen distortion.

[0061] According to the present invention, the shielding member (120) may include at least one notch (123) in which a portion of the perimeter exposed to the outside of the coupling groove (111) is recessed. As such, since the notch (123) is formed in the shielding member (120), it can be easily used by gripping the notch (123) or inserting a tool to rotate it.

[0062] The embodiments of the present invention described above are briefly explained as follows.

[0063] According to embodiments of the present invention, a fixed frame for a display device may be provided, comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each coupling groove, having a receiving groove formed on one surface exposed to the outside of the coupling groove; and a magnet member inserted into the receiving groove.

[0064] According to embodiments of the present invention, the magnet member may have N poles and S poles alternately arranged on the same layer.

[0065] According to embodiments of the present invention, the shielding member may be formed to be adjustable in height in the direction in which the display panel is located within the coupling groove.

[0066] According to embodiments of the present invention, the support member may include a pair of fixing parts that are formed elongated in one direction on the back surface of a display panel and are spaced apart from each other and fixed to the display panel, and a connecting part that is spaced apart from the display panel at a predetermined distance and connects the pair of fixing parts and has a plurality of coupling grooves arranged on one surface.

[0067] According to embodiments of the present invention, the connecting portion may include a protrusion having a first fastening hole with a screw thread formed in one direction on its inner circumference, wherein a portion of the bottom surface having a coupling groove is protruded toward the display panel side.

[0068] According to embodiments of the present invention, the shielding member may include a second fastening hole having screw threads formed in the other direction at a portion corresponding to the first fastening hole.

[0069] According to embodiments of the present invention, the magnet member includes a third fastening hole in a portion corresponding to a second fastening hole, and the diameter of the second fastening hole may be formed to be larger than the diameter of the first fastening hole and smaller than the diameter of the third fastening hole.

[0070] According to embodiments of the present invention, a fastening member may be included that is partially seated on a magnet member by penetrating a third fastening hole and screw-coupled to a first fastening hole and a second fastening hole.

[0071] According to embodiments of the present invention, the shielding member may further include a step adjustment member that is screw-coupled to a first fastening hole.

[0072] According to embodiments of the present invention, the shielding member may include a notch portion in which a part of the perimeter exposed to the outside of the coupling groove portion is recessed.

[0073] It is obvious to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the invention.

[0074] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention. Explanation of the symbols

[0075] 100: Fixed frame 110: Support member 111: Connecting groove 112: Protrusion 113: Fixed part 114: Connection 115: Protrusion 120: Shielding member 121: Acceptance Homebu 122: Step adjustment unit 123: Nochibu 130: Magnet component 140: Fastening member 141: Head section 142: First connecting part 143: Second connecting part

Claims

Claim 1 A fixed frame for a display device comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each of the coupling grooves, with a receiving groove formed on one surface exposed to the outside of the coupling grooves; and a magnet member inserted into the receiving groove, wherein the magnet member has an N pole and a S pole alternately arranged on the same layer. Claim 2 delete Claim 3 In claim 1, the shielding member is a fixed frame for a display device formed to be height-adjustable in the direction in which the display panel is located within the coupling groove. Claim 4 A fixed frame for a display device according to claim 1, wherein the support member comprises a pair of fixing parts formed elongated in one direction on the back surface of the display panel and spaced apart from each other to be fixed to the display panel, and a connecting part spaced apart from the display panel at a predetermined interval to connect the pair of fixing parts and having a plurality of coupling grooves arranged on one surface. Claim 5 In paragraph 4, the connecting portion is a fixed frame for a display device comprising a protrusion having a first fastening hole with a unidirectional screw thread formed on its inner circumference, wherein a portion of the bottom surface on which the coupling groove is formed protrudes toward the display panel. Claim 6 In claim 5, the shielding member is a fixed frame for a display device comprising a second fastening hole having a screw thread formed in the other direction at a portion corresponding to the first fastening hole. Claim 7 A fixed frame for a display device according to claim 6, wherein the magnet member includes a third fastening hole in a portion corresponding to the second fastening hole, and the diameter of the second fastening hole is formed to be larger than the diameter of the first fastening hole and smaller than the diameter of the third fastening hole. Claim 8 A fixed frame for a display device according to claim 7, comprising a fastening member that is partially seated on the magnet member through the third fastening hole and screw-coupled to the first fastening hole and the second fastening hole. Claim 9 In claim 5, the above shielding member further comprises a step adjustment member screw-coupled to the first fastening hole, for a fixed frame for a display device. Claim 10 In claim 9, the shielding member is a fixed frame for a display device comprising a notch portion in which a part of the perimeter exposed to the outside of the coupling groove portion is recessed. Claim 11 A fixed frame for a display device comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each of the coupling grooves, with a receiving groove formed on one surface exposed to the outside of the coupling grooves; and a magnet member inserted into the receiving grooves, wherein the shielding member is formed to be adjustable in height in the direction in which the display panel is located within the coupling grooves. Claim 12 A fixed frame for a display device comprising: a support member fixed to a display panel and having a plurality of coupling grooves formed on one surface; a shielding member formed of a material that shields magnetic force and inserted into each of the coupling grooves, with a receiving groove formed on one surface exposed to the outside of the coupling grooves; and a magnet member inserted into the receiving grooves, wherein the support member comprises a pair of fixing parts formed elongated in one direction on the back surface of the display panel and spaced apart in a state facing each other to be fixed to the display panel, and a connecting part spaced apart from the display panel at a predetermined distance to connect the pair of fixing parts and having the plurality of coupling grooves formed on one surface.

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