Display device

The composite material panel with a core and skins enhances structural rigidity and stability, addressing issues of rigidity and flatness in large-screen ultra-thin OLEDs, improving durability and surface treatment capabilities.

WO2026150978A1PCT designated stage Publication Date: 2026-07-16LG ELECTRONICS INC

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
LG ELECTRONICS INC
Filing Date
2025-01-09
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing display devices, particularly large-screen ultra-thin OLEDs, face challenges in structural rigidity, stability, and flatness, which affect their overall performance and durability.

Method used

A composite material panel comprising a front skin, rear skin, and a core with fibers, reinforced by barrier lines and adhesive bonding, enhances structural rigidity and stability, and improves frame flatness through a roll-to-roll manufacturing process.

Benefits of technology

The solution provides enhanced structural rigidity, stability, and improved flatness of large-screen ultra-thin display devices, ensuring durability and ease of additional surface treatments.

✦ Generated by Eureka AI based on patent content.

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Abstract

A display device is disclosed. The display device comprises: a display panel; a composite material plate which is positioned at the rear of the display panel; and a side frame which is positioned between the display panel and the composite material plate, is fixed to the composite material plate, and has the display panel coupled thereto. The composite material plate may comprise: a front skin forming the front surface thereof; a rear skin forming the rear surface thereof and facing the front skin; and a core positioned between the front skin and the rear skin and comprising fibers.
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Description

Display device

[0001] The present disclosure relates to a display device.

[0002] As the information society develops, the demand for display devices is increasing in various forms. In response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electroluminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) have recently been researched and are being used.

[0003] Among these, display devices using Organic Light Emitting Diodes (OLEDs) have the advantage of superior brightness and viewing angle compared to liquid crystal display devices, and can be implemented as ultra-thin because they do not require a backlight unit.

[0004] Recently, much research is being conducted to ensure the rigidity and structural stability of large-screen ultra-thin display devices.

[0005] The present disclosure aims to solve the aforementioned problems and other problems.

[0006] Another objective may be to ensure the structural rigidity of large-screen ultra-thin display devices.

[0007] Another objective may be to ensure the structural stability of the display device.

[0008] Another purpose may be to improve the flatness of the frame of the display device.

[0009] A display device according to one aspect of the present disclosure for achieving the above-described purpose comprises: a display panel; and a composite material plate to which the display panel is coupled, wherein the composite material plate comprises: a front skin forming a front surface; a rear skin forming a rear surface and facing the front skin; a core located between the front skin and the rear skin and comprising fibers; and a plurality of barrier lines that are recessed toward the core and extend long in at least one of the front skin or the rear skin.

[0010] The effects of the display device according to the present disclosure are described as follows.

[0011] According to at least one of the embodiments of the present disclosure, structural rigidity of a large-screen ultra-thin display device can be secured.

[0012] According to at least one of the embodiments of the present disclosure, structural stability of the display device can be secured.

[0013] According to at least one of the embodiments of the present disclosure, the flatness of the frame of a display device can be improved.

[0014] Further scopes of the applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, should be understood as being given merely as examples.

[0015] FIGS. 1 to 35 are drawings illustrating examples of display devices according to embodiments of the present disclosure.

[0016] The embodiments disclosed in this specification will be described in detail with reference to the attached drawings, provided that identical or similar components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0017] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0018] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, 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 they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0019] 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.

[0020] When a component is described as "couple," "fix," "mount," "connect," or "link" to another component, another component may exist between that component and the other component. When a component is described as "directly coupled," "directly fixed," "directly mounted," "directly connected," or "directly linked" to another component, there may not be another component in between.

[0021] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0022] Even when describing an embodiment with reference to a specific drawing, reference numbers not appearing in the specific drawing may be mentioned if necessary, and reference numbers not appearing in the specific drawing are used when the reference numbers appear in other figures.

[0023]

[0024] Referring to FIG. 1, the display device (100) may include a display panel (110). The display panel (110) may display an image.

[0025] The display device (100) may include a first long side (LS1), a second long side (LS2) facing the first long side (LS1), a first short side (SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (SS2) facing the first short side (SS1).

[0026] For the convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are depicted and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it is also possible for the lengths of the first and second long sides (LS1, LS2) to be approximately the same as the lengths of the first and second short sides (SS1, SS2).

[0027] A direction parallel to the long side (Long Side, LS1, LS2) of the display device (100) can be referred to as the first direction (DR1) or left-right direction (LR). A direction parallel to the short side (Short Side, SS1, SS2) of the display device (100) can be referred to as the second direction (DR2) or up-down direction (UD).

[0028] The direction perpendicular to the long side (LS1, LS2) and short side (SS1, SS2) of the display device (100) may be called the third direction (DR3) or the front-back direction (FR). Here, the direction in which the display panel (110) displays an image may be called the front, and the opposite direction may be called the rear.

[0029] Hereinafter, a display panel (110) is described using an organic light-emitting diode (OLED) as an example, but the display panel (110) applicable to the present disclosure is not limited thereto.

[0030] The display panel (110) forms the front surface of the display device (100) and can display an image forward. The display panel (110) can output an image by dividing the image into multiple pixels and adjusting the color, brightness, and saturation for each pixel. The display panel (110) can be divided into an active area where the image is displayed and a de-active area where the image is not displayed. The display panel (110) can generate light corresponding to the color red, green, or blue according to a control signal.

[0031]

[0032] Referring to FIG. 2, the material complexed panel (130) may include a core (131), a front skin (132), and a rear skin (133). The core (131), the front skin (132), and the rear skin (133) may be combined with each other. The material complexed panel (130) may be referred to as a fiber complexed panel (130), a fiber complexed plate (130), a material complexed plate (130), a middle frame (130), a rear cover (130), or a rear plate (130).

[0033] The front skin (132) can form the front surface of the composite material panel (130). The rear skin (133) can form the rear surface of the composite material panel (130). The front skin (132) and the rear skin (133) may include a metal material.

[0034] For example, the front skin (132) and the rear skin (133) may be galvanized iron. As another example, the front skin (132) and the rear skin (133) may include aluminum (Al).

[0035] For example, the thickness of the front skin (132) and the rear skin (133) may be 0.2 to 0.5 millimeters. As another example, the front skin (132) and the rear skin (133) formed from galvanized steel may be 0.27 millimeters. As another example, the front skin (132) and the rear skin (133) containing aluminum may be 0.5 millimeters.

[0036] The front skin (132) and the rear skin (133) may face each other with respect to the core (131) described later. The core (131) may be located between the front skin (132) and the rear skin (133). The core (131) may include fibers. The core (131) may be formed from a composite material. The core (131) may include main fibers and binder fibers. The binder fibers may be mixed between the main fibers.

[0037] The front skin (132) and / or rear skin (133) can be bonded to the core (131) by a hot melt method. A hot melt sheet may be positioned between the front skin (132) and the core (131), and a hot melt sheet may be positioned between the rear skin (133) and the core (131). The hot melt sheet may be a film. For example, the hot melt sheet may be a film such as EVA, acrylic, or polyurethane with a thickness of 50 micrometers or more. After positioning the core (131) between the front skin (132) and the rear skin (133) by the hot melt sheet, roll lamination may be performed at 190 degrees Celsius for at least 1 minute.

[0038] Accordingly, the bending stiffness and / or torsional stiffness of the display device can be improved.

[0039]

[0040] Referring to FIGS. 3 and 4, a composite material panel (130) can be manufactured through a process of pressing a front skin (132) and a rear skin (133) onto a core (131) using a plurality of rollers, and this process can be called a roll-to-roll process.

[0041] Referring to FIG. 3, depending on the rotation of the pinch roller (Ra) which performs the function of a drive motor, the front skin (132) can be unwound from the front drum (Da), the rear skin (133) can be unwound from the rear drum (Db), and the core (131) can be moved through the feeding roller (Rd). Also, a first adhesive (134a) for bonding the front skin (132) to the core (131) can be unwound from the first drum (Dc). Additionally, a second adhesive (134b) for bonding the rear skin (133) to the core (131) can be unwound from the second drum (Db). In this case, the front skin (132), the first adhesive (134a), the core (131), the second adhesive (134b), and the rear skin (133) are stacked in the order above and can be guided toward the oven (Ov) by the guide roller (Rc). The adhesive (134a, 134b) may be a hot melt sheet (134a, 134b).

[0042] In an oven (Ov), the first and second adhesives (134a, 134b) are melted, and the front skin (132) and rear skin (133), respectively, can be bonded to the core (131). For example, the melting point of the first and second adhesives (134a, 134b) may be about 150°C, and the ambient temperature of the oven (Ov) may be about 200°C. For example, the peel-off force of the first and second adhesives (134a, 134b) may be about 10 kgf or more.

[0043] The front skin (132), core (131), and rear skin (133) that have passed through the oven (Ov) are guided to the compression roller (Rb) according to the rotation of the pinch roller (Ra) and can be compressed by the compression roller (Rb). Accordingly, the bonding force between the front skin (132), core (131), and rear skin (133) can be further increased. After passing the pinch roller (Ra), the mutually bonded front skin (132), core (131), and rear skin (133) can be cut by a cutter (Ct) to be manufactured into a composite material panel (130) of a certain size.

[0044] Referring to FIG. 4, the compression roller (Rb) or pinch roller (Ra) may come into contact with the outer surface of the front skin (132) and the rear skin (133), respectively. When the compression roller (Rb) or pinch roller (Ra) rotates, the composite material panel (130) may be moved in the longitudinal direction (i.e., left-right direction (LR)) of the core (131). At this time, the front skin (132) and the rear skin (133) may be sequentially joined from one end of the core (131) to the other end in the longitudinal direction of the core (131).

[0045] In addition, the front skin (132) and rear skin (133) of the composite material panel (130) can be formed flat. That is, by forming the rear surface of the rear skin (133) that forms the rear surface of the display device (100) flat, it becomes easier to perform additional work such as painting or attaching a sheet to the rear surface of the rear skin (133) for aesthetic purposes.

[0046] Meanwhile, in addition to forming the front skin (132) and rear skin (133) flat through the roll-to-roll process described above with reference to FIGS. 3 and 4, it is also possible to combine the core (131), front skin (132), and rear skin (133) through a process of stacking the front skin (132), core (131), and rear skin (133) in sequence and then combining them.

[0047]

[0048] Referring to FIG. 5, the composite material panel (130) may have a flat section (130P), a receiving section (137), and an outer part (135). The outer part (135) may be formed around the perimeter of the flat section (130P). A first outer part (135a) may be formed along the upper edge of the flat section (130P), a second outer part (135b) may be formed along the left edge of the flat section (130P), a third outer part (135c) may be formed along the lower edge of the flat section (130P), and a fourth outer part (135d) may be formed along the right edge of the flat section (130P). The outer part (135) may be formed as the flat section (130P) is pressed. The outer part (135) may form a step as it descends from the flat section (130P). The thickness of the flat portion (130P) may be greater than the thickness of the outer part (135).

[0049] The cable hole (136) may be formed by penetrating the front skin (132, see FIG. 2) and the rear skin (133, see FIG. 2) of the receiving portion (137). The cable hole (136) may be formed in the receiving portion (137) adjacent to the lower edge of the flat portion (130P). There may be multiple cable holes (136). The first cable hole (136a) may be located adjacent to the second cable hole (136b).

[0050] A receiving portion (137) may be formed between the flat plate portion (130P) and the third outer part (135c) adjacent to the lower edge of the flat plate portion (130P). There may be multiple receiving portions (137). A first receiving portion (137a) may be located between the first cable hole (136a) and the second short side (SS2). A second receiving portion (137b) may be located between the second cable hole (136b) and the first short side (SS1). The receiving portion (137) may be formed as the flat plate portion (130P) is pressed. The receiving portion (137) may form a step as it is lowered from the flat plate portion (130P) and / or the outer part (135c).

[0051]

[0052] Referring to FIG. 6, the receiving portion (137) can be formed by pressing the flat portion (130P). The front skin (132) of the receiving portion (137) can form a step (D1) that is lower from the front skin (132) of the flat portion (130P). The rear skin (133) of the receiving portion (137) can form a step (D2) that is higher from the rear skin (133) of the flat portion (130P). At this time, the height of the step (D1) that is lower from the front skin (132) of the flat portion (130P) to the front skin (132) of the receiving portion (137) may be greater than the height of the step (D2) that is higher from the rear skin (133) of the flat portion (130P) to the rear skin (133) of the receiving portion (137). The thickness (T1) of the flat plate portion (130P) may be greater than the thickness (T2) of the receiving portion (137).

[0053] As the front skin (132) of the flat plate (130P) is pressed in the direction of the rear skin (133), the core (131) of the composite material panel (130) can absorb external force. The magnitude of the external force applied to the front skin (132) of the flat plate (130P) may be greater than the magnitude of the external force applied to the rear skin (133) of the flat plate (130P). The core (131) of the composite material panel (130) can absorb shock as well as secure rigidity.

[0054] The thickness (T4) of the third outer part (135c) may be greater than the thickness (T2) of the receiving portion (137). A step (D2) may be formed that rises from the rear skin (133) of the third outer part (135c) to the rear skin (133) of the receiving portion (137). The height of the step (D2) between the rear skin (133) of the third outer part (135c) and the rear skin (133) of the receiving portion (137) may be the same as the height of the step (D2) between the rear skin (133) of the receiving portion (137) and the rear skin (133) of the flat portion (130P).

[0055] The protruding pad (138) may be formed by protruding from the front skin (132) of the third outer part (135c). The front skin (132) of the protruding pad (138) may form a step (D4) that lowers to the front skin (132) of the third outer part (135c). The height of the step (D4) formed by the third outer part (135c) and the protruding pad (138) may be smaller than the height of the steps (D1, D2) formed by the flat portion (130P) and the receiving portion (137). A step (D3) that lowers from the front skin (132) of the protruding pad (138) to the front skin (132) of the receiving portion (137) may be formed. The thickness (T3) of the protruding pad (138) may be greater than the thickness (T4) of the third outer part (135c), smaller than the thickness (T1) of the flat part (130P), and smaller than the thickness (T2) of the receiving part (137).

[0056] The fastening groove (H) may protrude from the rear skin (133) of the receiving portion (137). The fastening groove (H) may be recessed in the front skin (132) of the receiving portion (137) and may protrude from the rear skin (133) of the receiving portion (137). The center of the fastening groove (H) may be penetrated.

[0057]

[0058] Referring to FIGS. 7 and 8, a fastening groove (H) may be formed in a flat plate (130P). The fastening groove (H) may be formed as the flat plate (130P) is pressed. The front skin (132) of the fastening groove (H) may be formed by being recessed from the front skin (132) of the flat plate (130P). The rear skin (133) of the flat plate (130P) and the rear skin (133) of the fastening groove (H) may form the same plane. The thickness (T0) of the fastening groove (H) may be smaller than the thickness (T1) of the flat plate (130P).

[0059] A fastening member (h) may be formed in the center of the fastening groove (H). The fastening member (h) may be formed by punching the fastening groove (H). The fastening member (h) may be formed by penetrating the front skin (132) and the rear skin (133) of the fastening groove (H). The length of the shaft (SA) of the fastening member (S) may be greater than the thickness (T0) of the fastening groove (H). The shaft (SA) of the fastening member (S) may be inserted into the fastening groove (H) and protrude outside the rear skin (132) of the fastening groove (H) through the fastening member (h). The depth (D5) of the fastening groove (H) may be greater than the thickness of the head (SH). The head (SH) of the fastening member (S) may be concealed within the fastening groove (H).

[0060]

[0061] Referring to FIGS. 9 and FIGS. 10 together with FIGS. 8, the PCB plate (150) can be coupled to the rear of the composite material panel (130). The PCB plate (150) can be fixed to the rear of the composite material panel (130) by a fastening member (S).

[0062] A PCB plate (150) may be formed by pressing a plate (151) containing metal. The PCB plate (150) may have a horizontal portion (152), a vertical portion (153), a dome portion (154), and a recessed portion (155). The horizontal portion (152) may be formed by protruding from the front to the rear of the PCB plate (150) and extending long in the left-right direction of the PCB plate (150). The vertical portion (153) may be formed by protruding from the front to the rear of the PCB plate (150) and extending long in the up-down direction of the PCB plate (150). The dome portion (154) may be formed by protruding from the front to the rear of the PCB plate (150). The recessed portion (155) may be formed by being recessed from the rear to the front of the vertical portion (153) and / or the horizontal portion (152).

[0063] The axis (SA) of the fastening member (S) can be combined with the composite material panel (130) and the PCB plate (150) by penetrating the recess (155) formed in the vertical portion (153) and / or the horizontal portion (152). The depth of the recess (155) may be greater than the protruding length of the axis (SA) of the fastening member (S) that penetrates the composite material panel (130) and protrudes backward.

[0064]

[0065] Referring to FIGS. 11 and 12, the side frame (140) may be joined to an outer part (135, see FIG. 5) adjacent to the flat plate portion (130P). The side frame (140) may have a first part (141), a second part (142), a third part (143), a fourth part (144), and a fifth part (145). The second part (142) may be bent from the first part (141) at a first corner (C1).

[0066] The first part (141) may have a horizontal section (141H) and a vertical section (141V). The horizontal section (141H) of the first part (141) may be fixed on the first outer part (135a, see FIG. 5). The second part (142) may have a horizontal section (142H) and a vertical section (142V). The horizontal section (142H) of the second part (142) may be fixed on the fourth outer part (135d, see FIG. 5).

[0067] A gap (G1) may be formed between the horizontal portion (141H) of the first part (141) and the horizontal portion (142H) of the second part (142). The vertical portion (141V) of the first part (141) and the vertical portion (142V) of the second part (142) may be connected by bending. A hole (H1) connected to the gap (G1) may be formed between the horizontal portions (141H, 142H) adjacent to the vertical portions (141V, 142V). The size of the hole (H1) or the diameter of the hole (H1) may be larger than the width of the gap (G1). The description of the first corner (C1) of the side frame (140) may be applied equally to the second corner (C2) of the side frame (140).

[0068]

[0069] Referring to FIGS. 11 and 13, the side frame (140) may be joined to an outer part (135, see FIG. 5) adjacent to a flat plate (130P). The side frame (140) may have a first part (141), a second part (142), a third part (143), a fourth part (144), and a fifth part (145). The second part (142) may be bent from the third part (143) at a third corner (C3).

[0070] The third part (143) may have a horizontal section (143H) and a vertical section (143V). The horizontal section (143H) of the third part (143) may be fixed on the third outer part (135c, see FIG. 5). The second part (142) may have a horizontal section (142H) and a vertical section (142V). The horizontal section (142H) of the second part (142) may be fixed on the fourth outer part (135d, see FIG. 5).

[0071] A gap (G3) may be formed between the horizontal portion (143H) of the third part (143) and the horizontal portion (142H) of the second part (142). The vertical portion (143V) of the third part (143) and the vertical portion (142V) of the second part (142) may be connected by bending. A hole (H3) may be formed by connecting the gap (G3) between the horizontal portions (143H, 142H) adjacent to the vertical portions (143V, 142V). The size of the hole (H3) or the diameter of the hole (H3) may be larger than the width of the gap (G3). The description of the first corner (C3) of the side frame (140) may be applied equally to the fourth corner (C4) of the side frame (140).

[0072]

[0073] Referring to FIGS. 11 and 14, the third part (143) and the fourth part (144) of the side frame (140) may be positioned or fixed on the third outer part (135c). The end of the third part (143) of the side frame (140) may be joined to the end of the fourth part (144) of the side frame (140).

[0074] The horizontal portion (144H) of the fourth part (144) may come into contact with the horizontal portion (143H) and the vertical portion (143V) of the third part (143). The vertical portion (144V) of the fourth part (144) may come into contact with the vertical portion (143V) of the third part (143). The vertical portion (143V) of the third part (143) may come into contact with the horizontal portion (144H) and the vertical portion (144V) of the fourth part (144). The end of the third part (143) may be fixed to the end of the fourth part (144). For example, the end of the third part (143) and the end of the fourth part (144) may be fixed by welding.

[0075]

[0076] Referring to FIG. 15, the display panel (110) can be coupled or fixed onto the side frame (140). The horizontal portion (143H) of the side frame (140) can support the rear of the display panel (110), and the vertical portion (143V) can cover the side of the display panel (110). For example, the vertical portion (143V) of the third part (143) of the side frame (140) can cover the side of the lower edge of the display panel (110).

[0077] The vertical portion (143V) can cover the side of the composite material panel (130). For example, the vertical portion (143V) of the third part (143) of the side frame (140) can cover the side of the third outer part (135c) of the composite material panel (130).

[0078] The flexible cable (113) may extend from the lower edge of the display panel (110) to the horizontal portion (143H) of the display panel (110) and the side frame (140). The flexible cable (113) may extend between the rear surface of the display panel (110) and the composite material panel (130). For example, the flexible cable (113) may be a COF (113).

[0079] The source signal board (115) can be electrically connected to the flexible cable (113). The source signal board (115) can be fixed to one side of the flexible cable (113). For example, the source signal board (115) can be an S-PCB (115). The source signal board (115) can be located in the receiving portion (137) of the composite material panel (130).

[0080] The flexible cable (113) may be positioned between the protruding pad (138) of the composite material panel (130) and the display panel (110). The flexible cable (113) may come into contact with the protruding pad (138). Heat generated from the source signal substrate (115) and / or the flexible cable (113) may be dissipated through the protruding pad (138).

[0081] A heat dissipation pad (114) may be positioned between the flexible cable (113) in contact with the protruding pad (138) and the rear surface of the display panel (110). The heat dissipation pad (114) may be provided with an elastic material (114a) and a conductive film (114b). The core (114a) of the heat dissipation pad (114) may be formed of an elastic material, and the conductive film (114b) may cover the core (114a) of the heat dissipation pad (114). Accordingly, the flexible cable (113) may remain in contact with the protruding pad (138).

[0082]

[0083] Referring to FIGS. 16 and 17, an inner frame (210, 230) may be formed on the front and / or rear of a composite material panel (130). The inner frame (210, 230) may be referred to as a pressed frame (210, 230) or a rigid line (210, 230). The inner frame (210, 230) may be formed by the front skin (132) and / or rear skin (133) of the composite material panel (130) being pressed and the core (131, see FIG. 2) being compressed.

[0084] The inner frame (210, 230) may include a front inner line (210), a rear inner line (230), and a node hole (220). The front inner line (210) may be formed by indenting the front skin (132) of the composite material panel (130). The rear inner line (230) may be formed by indenting the rear skin (133) of the composite material panel (130).

[0085] The front inner line (210) may include a first front horizontal line (211), a second front horizontal line (212), a third front horizontal line (213), a first front vertical line (214), and a second front vertical line (215). The first front horizontal line (214) may form the upper side of the front inner line (210). The third front horizontal line (213) may form the lower side of the front inner line (210). The second front horizontal line (212) may be located between the first front horizontal line (211) and the third front horizontal line (213). The first front vertical line (214) may connect one end of the first front horizontal line (211), one end of the second front horizontal line (212), and one end of the third front horizontal line (213). The second front vertical line (215) can connect the other end of the first front horizontal line (211), the other end of the second front horizontal line (212), and the other end of the third front horizontal line (213). For example, the first distance (L1) between the first front horizontal line (211) and the second front horizontal line (212) may be smaller than the second distance (L2) between the second front horizontal line (212) and the third front horizontal line (213).

[0086] A node hole (220) can be formed at the point where the front horizontal lines (211, 212, 213) and the front vertical lines (214, 215) meet. The node hole (220) can be formed by penetrating the front skin (132), the core (131), and the rear skin (133) of the composite material panel (130).

[0087] The rear inner line (230) may include a first rear horizontal line (231), a second rear horizontal line (232), a third rear horizontal line (233), a first rear vertical line (234), and a second rear vertical line (235, see FIG. 24). The first rear horizontal line (234) may form the upper side of the rear inner line (230). The third rear horizontal line (233) may form the lower side of the rear inner line (230). The second rear horizontal line (232) may be located between the first rear horizontal line (231) and the third rear horizontal line (233). The first rear vertical line (234) may connect one end of the first rear horizontal line (231), one end of the second rear horizontal line (232), and one end of the third rear horizontal line (233). The second rear vertical line (235, see FIG. 24) can connect the other end of the first rear horizontal line (231), the other end of the second rear horizontal line (232), and the other end of the third rear horizontal line (233). For example, the third distance (L3) between the first rear horizontal line (231) and the second rear horizontal line (232) may be smaller than the fourth distance (L4) between the second rear horizontal line (232) and the third rear horizontal line (233).

[0088] A node hole (220) can be formed at the point where the rear horizontal lines (231, 232, 233) and the rear vertical lines (234, 235) meet. The node hole (220) can be formed by penetrating the front skin (132), the core (131), and the rear skin (133) of the composite material panel (130).

[0089] The length of the rear inner line (230) may be smaller than the length of the PCB plate (150). The width of the rear inner line (230) may be smaller than the width of the PCB plate (150). The PCB plate (150) may cover the rear inner line (230).

[0090] Accordingly, the bending stiffness and / or torsional stiffness of the composite material panel (130) can be improved.

[0091]

[0092] Referring to FIG. 18, there may be a plurality of node holes (220). The plurality of node holes (220) may include a first node hole (221), a second node hole (222), a third node hole (223), a fourth node hole (224), a fifth node hole (225), and a sixth node hole (226).

[0093] The first node hole (221) may be located at the corner (C2) formed by the first horizontal line (211, 231) and the first vertical line (214, 234). The first node hole (221) may be formed by penetrating the composite material panel (130) at the corner (C2) of the first horizontal line (211, 231) and the first vertical line (214, 234).

[0094] The second node hole (222) may be located at the corner (C1) formed by the first horizontal line (211, 231) and the second vertical line (212, 232). The second node hole (222) may be formed by penetrating the composite material panel (130) at the corner (C1) of the first horizontal line (211, 231) and the second vertical line (212, 232).

[0095] The third node hole (223) may be located at the node (M2) formed by the second horizontal line (212, 232) and the first vertical line (214, 234). The third node hole (223) may be formed by penetrating the composite material panel (130) at the node (M2) of the second horizontal line (212, 232) and the first vertical line (214, 234).

[0096] The fourth node hole (224) may be located at the node (M1) formed by the second horizontal line (212, 232) and the second vertical line (212, 232). The fourth node hole (224) may be formed by penetrating the composite material panel (130) at the node (M1) of the second horizontal line (212, 232) and the second vertical line (212, 232).

[0097] The fifth node hole (225) may be located at the corner (C4) formed by the third horizontal line (213, 233) and the first vertical line (214, 234). The fifth node hole (225) may be formed by penetrating the composite material panel (130) at the corner (C4) of the third horizontal line (213, 233) and the first vertical line (214, 234).

[0098] The sixth node hole (226) may be located at the corner (C3) formed by the third horizontal line (213, 233) and the second vertical line (212, 232). The sixth node hole (226) may be formed by penetrating the composite material panel (130) at the corner (C3) of the third horizontal line (213, 233) and the second vertical line (212, 232).

[0099] Accordingly, the bending rigidity and / or torsional rigidity of the composite material panel (130) can be improved, as well as the flatness of the display panel (110) coupled to the composite material panel (130).

[0100]

[0101] Referring to FIG. 19, the size of the sixth node hole (226) may be larger than the width of the third horizontal line (213, 233) and / or the second vertical line (215, 235). For example, if the sixth node hole (226) is square, the width (A, B) of the sixth node hole (226) may be larger than the width (W) of the third horizontal line (213, 233) and / or the second vertical line (215, 235). As another example, if the sixth node hole (226) is circular, the diameter of the sixth node hole (226) may be larger than the width of the third horizontal line (213, 233) and / or the second vertical line (215, 235). The description of the sixth node hole (226) may apply to the first node hole (221), the second node hole (222), and / or the fifth node hole (225).

[0102]

[0103] Referring to FIG. 20, the size of the fourth node hole (224) may be larger than the width of the second horizontal line (212, 232) and / or the second vertical line (215, 235). For example, if the fourth node hole (224) is square, the width (A, B) of the fourth node hole (224) may be larger than the width of the second horizontal line (212, 232) and / or the second vertical line (215, 235). As another example, if the fourth node hole (224) is circular, the diameter of the fourth node hole (224) may be larger than the width of the second horizontal line (212, 232) and / or the second vertical line (215, 235). The description of the fourth node hole (224) may also apply to the third node hole (223).

[0104]

[0105] Referring to FIG. 21, the front inner line (210) can be formed on the composite material panel (130) by compressing the core (131) and indenting the front skin (132). The rear inner line (230) can be formed on the composite material panel (130) by compressing the core (131) and indenting the rear skin (133).

[0106] The front inner line (210) and the rear inner line (230) may be symmetrical with respect to the core (131). For example, the width (W) of the front inner line (210) may be substantially the same as the width (W) of the rear inner line (230). For another example, the depth (D10) of the front inner line (210) may be substantially the same as the depth (D11) of the rear inner line (230).

[0107] A pressed area (PA) in which the core (131) is compressed may be formed between the front inner line (210) and the rear inner line (230). The density of the core (131) in the pressed area (PA) may be greater than the density of the core (131) in the uncompressed area.

[0108] Accordingly, the bending stiffness and / or torsional stiffness of the composite material panel (130) can be improved.

[0109]

[0110] Referring to FIG. 22, an adhesive member (AD) may be placed on a flat portion (130P) of a composite material panel (130). The adhesive member (AD) may be adhered to a front skin (132) of the composite material panel (130). There may be multiple adhesive members (AD).

[0111] The first adhesive member (AD1) can be fixed to the first part (141) of the side frame (140). The first adhesive member (AD1) can be extended along the longitudinal direction of the first part (141) of the side frame (140). The second adhesive member (AD2) can be extended along the longitudinal direction of the second part (142) of the side frame (140) and fixed to the second part (142). The third adhesive member (AD3) can be extended along the second part (142) of the side frame (140), parallel to the second part (142), and fixed to the flat plate (130P) spaced apart from the first adhesive member (AD1).

[0112] The fifth adhesive member (AD5) is extended along the longitudinal direction of the fifth part (145) of the side frame (140) and can be fixed to the fifth part (145). The fourth adhesive member (AD4) is extended along the fifth part (145) of the side frame (140), parallel to the fifth part (145), and can be fixed to the flat plate portion (130P) spaced apart from the fifth adhesive member (AD5).

[0113] The sixth adhesive member (AD6) is extended along the longitudinal direction of the first part (141) of the side frame (140) and can be fixed to the flat plate portion (130P) spaced apart from the first adhesive member (AD1). The 14th distance (G14) from the first part (141) of the side frame (140) to the sixth adhesive member (AD6) may be smaller than the 15th distance (G15) from the sixth adhesive member (AD6) to the first front horizontal inner line (211).

[0114] The seventh adhesive member (AD7) extends along the longitudinal direction of the sixth adhesive member (AD6) and can be fixed to the flat plate portion (130P) between the first front vertical line (214) and the fourth adhesive member (AD4). The seventh adhesive member (AD7) can be located between the sixth adhesive member (AD6) and the ninth adhesive member (AD9). The 16th distance (G16) from the fourth adhesive member (AD4) to one end of the seventh adhesive member (AD7) may be smaller than the 17th distance (G17) from the first front vertical line (214) to the other end of the seventh adhesive member (AD7).

[0115] The ninth adhesive member (AD9) extends along the longitudinal direction of the sixth adhesive member (AD6) and can be fixed to the flat plate portion (130P) between the first front vertical line (214) and the fourth adhesive member (AD4). The ninth adhesive member (AD9) can be located between the seventh adhesive member (AD7) and the receiving portion (137). The 18th distance (G18) from the fourth adhesive member (AD4) to one end of the ninth adhesive member (AD9) may be smaller than the 19th distance (G19) from the first front vertical line (214) to the other end of the ninth adhesive member (AD9).

[0116] The eighth adhesive member (AD8) extends along the longitudinal direction of the sixth adhesive member (AD6) and can be fixed to the flat plate portion (130P) between the second front vertical line (215) and the third adhesive member (AD3). The eighth adhesive member (AD8) can be located between the sixth adhesive member (AD6) and the receiving portion (137). The 20th distance (G20) from the third adhesive member (AD3) to one end of the eighth adhesive member (AD8) may be smaller than the 21st distance (G21) from the second front vertical line (215) to the other end of the eighth adhesive member (AD8).

[0117] The 10th adhesive member (AD10) extends along the longitudinal direction of the 6th adhesive member (AD6) and can be fixed to the flat plate portion (130P) between the 2nd front vertical line (215) and the 3rd adhesive member (AD3). The 10th adhesive member (AD10) can be located between the 8th adhesive member (AD8) and the receiving portion (137). The 22nd distance (G22) from the 3rd adhesive member (AD3) to one end of the 10th adhesive member (AD10) may be smaller than the 23rd distance (G23) from the 2nd front vertical line (215) to the other end of the 10th adhesive member (AD10).

[0118] The 11th adhesive member (AD11) is extended along the longitudinal direction of the 2nd front horizontal line (212) and can be fixed to the flat plate (130P) between the 2nd front horizontal line (212) and the 3rd front horizontal line (213). The 12th adhesive member (AD12) is extended along the longitudinal direction of the 2nd front horizontal line (212) and can be located between the 1st front horizontal line (211) and the 2nd front horizontal line (212). The length of the 12th adhesive member (AD12) may be shorter than the length of the 11th adhesive member (AD11).

[0119] The 10th distance (G10) between the 1st front horizontal line (211) and the 12th adhesive member (AD12) may be smaller than the 11th distance (G11) between the 12th adhesive member (AD12) and the 2nd front horizontal line (212). For example, the 10th distance (G10) may be 40 millimeters or more. For example, the distance between one end of the 12th adhesive member (AD12) and the 1st vertical front line (214) may be 20 millimeters or more. As another example, the distance between the other end of the 12th adhesive member (AD12) and the 2nd vertical front line (215) may be 20 millimeters or more.

[0120] The 12th distance (G12) between the 2nd front horizontal line (212) and the 11th adhesive member (AD11) may be greater than the 13th distance (G13) between the 11th adhesive member (AD11) and the 3rd front horizontal line (213). For example, the 13th distance (G13) may be 40 millimeters or more.

[0121] The display panel (110) can be bonded to or fixed to the composite material panel (130) by means of an adhesive member (AD). Accordingly, the display panel (110) can be fixed flatly to the composite material panel (130).

[0122]

[0123] Referring to FIGS. 23 and 24, the composite material panel (130) may have a flat portion (130P), a receiving portion (137), and an outer part (135). The outer part (135) may be formed around the perimeter of the flat portion (130P) and may form the edge of the composite material panel (130). A first outer part (135a) may be formed along the upper edge of the flat portion (130P), a second outer part (135b) may be formed along the left edge of the flat portion (130P), a third outer part (135c) may be formed along the lower edge of the flat portion (130P), and a fourth outer part (135d) may be formed along the right edge of the flat portion (130P). The outer part (135) may be formed as the flat portion (130P) is pressed. The outer part (135) can form a step as it slopes downward from the flat portion (130P). The thickness of the flat portion (130P) may be greater than the thickness of the outer part (135). The lower edge of the flat portion (130P) may form a curved line.

[0124] A receiving portion (137) may be formed on a third outer part (135c) adjacent to the lower edge of a flat plate portion (130P). There may be multiple receiving portions (137). A first receiving portion (137a) may be located between a first cable hole (136a) and a second short side (SS2). A second receiving portion (137b) may be located between a second cable hole (136b) and a first short side (SS1). A first receiving portion (137a) may be connected to a second receiving portion (137b). A receiving portion (137) may be formed as the third outer part (135c) is pressed from the front to the rear. A receiving portion (137) may form a step that is lower from the front of the outer part (135c).

[0125] The cable hole (136) may be formed by penetrating the front skin (132, see FIG. 2) and the rear skin (133, see FIG. 2) of the receiving portion (137). The cable hole (136) may be formed in the receiving portion (137) and / or the third outer part (135c) adjacent to the lower edge of the flat portion (130P). There may be multiple cable holes (136). The first cable hole (136a) may be located adjacent to the second cable hole (136b).

[0126] An inner frame (210, 230) may be formed on the front and / or rear of a composite material panel (130). The inner frame (210, 230) may be referred to as a pressed frame (210, 230) or a rigid line (210, 230). The inner frame (210, 230) may be formed by the front skin (132) and / or rear skin (133) of the composite material panel (130) being pressed and the core (131, see FIG. 2) being compressed.

[0127] The inner frame (210, 230) may include a front inner line (210), a rear inner line (230), and a node hole (220). The front inner line (210) may be formed by indenting the front skin (132) of the composite material panel (130). The rear inner line (230) may be formed by indenting the rear skin (133) of the composite material panel (130).

[0128] The front inner line (210) may include a first front horizontal line (211), a second front horizontal line (212), a third front horizontal line (213), a first front vertical line (214), and a second front vertical line (215). The first front horizontal line (214) may form the upper side of the front inner line (210). The third front horizontal line (213) may form the lower side of the front inner line (210). The second front horizontal line (212) may be located between the first front horizontal line (211) and the third front horizontal line (213). The first front vertical line (214) may connect one end of the first front horizontal line (211), one end of the second front horizontal line (212), and one end of the third front horizontal line (213). The second front vertical line (215) can connect the other end of the first front horizontal line (211), the other end of the second front horizontal line (212), and the other end of the third front horizontal line (213). For example, the first distance (L1) between the first front horizontal line (211) and the second front horizontal line (212) may be smaller than the second distance (L2) between the second front horizontal line (212) and the third front horizontal line (213).

[0129] A node hole (220) can be formed at the point where the front horizontal lines (211, 212, 213) and the front vertical lines (214, 215) meet. The node hole (220) can be formed by penetrating the front skin (132), the core (131), and the rear skin (133) of the composite material panel (130).

[0130] The rear inner line (230) may include a first rear horizontal line (231), a second rear horizontal line (232), a third rear horizontal line (233), a first rear vertical line (234), and a second rear vertical line (235). The first rear horizontal line (231) may form the upper side of the rear inner line (230). The third rear horizontal line (233) may form the lower side of the rear inner line (230). The second rear horizontal line (232) may be located between the first rear horizontal line (231) and the third rear horizontal line (233). The first rear vertical line (234) may connect one end of the first rear horizontal line (231), one end of the second rear horizontal line (232), and one end of the third rear horizontal line (233). The second rear vertical line (235) can connect the other end of the first rear horizontal line (231), the other end of the second rear horizontal line (232), and the other end of the third rear horizontal line (233). For example, the third distance (L3) between the first rear horizontal line (231) and the second rear horizontal line (232) may be smaller than the fourth distance (L4) between the second rear horizontal line (232) and the third rear horizontal line (233).

[0131] A node hole (220) can be formed at the point where the rear horizontal lines (231, 232, 233) and the rear vertical lines (234, 235) meet. The node hole (220) can be formed by penetrating the front skin (132), the core (131), and the rear skin (133) of the composite material panel (130).

[0132] The receiving portion (137) can be formed as the third outer part (135c) is pressed from the front to the rear. The receiving portion (137) can form a step that rises from the rear of the third outer part (135c).

[0133] A cut-out portion (139) may be formed in at least a portion of a curved line formed along the lower edge of the flat portion (130P). There may be multiple cut-out portions (139). A first cut-out portion (139a) may be aligned with the first receiving portion (137a), and a second cut-out portion (139b) may be aligned with the second receiving portion (137b). A cut-out portion (139) may be formed on a line forming a step between the front of the flat portion (130P) and the third outer part (135c). A cut-out portion (139) may be formed on a line forming a step between the third outer part (135c) and the receiving portion (137).

[0134] Accordingly, the bending stiffness and / or torsional stiffness of the composite material panel (130) can be improved, as well as the flatness of the composite material panel (130).

[0135]

[0136] Referring to FIG. 25, the third outer part (135c) can be formed by pressing the flat plate portion (130P). The front skin (132) of the third outer part (135c) can form a step (D5) that is lowered from the front skin (132) of the flat plate portion (130P).

[0137] The receiving portion (137) can be formed as the third outer part (135c) is pressed. The front skin (132) of the receiving portion (137) can form a step (D6) that is lowered from the front skin (132) of the third outer part (135c).

[0138] The rear skin (133) of the receiving portion (137) may form a step (D2) that rises from the rear skin (133) of the third outer part (135c). For example, the height of the step (D6) that lowers from the front skin (132) of the third outer part (135c) to the front skin (132) of the receiving portion (137) may be smaller than the height of the step (D2) that rises from the rear skin (133) of the third outer part (135c) to the rear skin (133) of the receiving portion (137). The thickness (T1) of the flat portion (130P) may be greater than the thickness (T2) of the receiving portion (137). The thickness (T4) of the third outer part (135c) may be smaller than the thickness (T1) of the flat portion (130P). The thickness (T2) of the receiving portion (137) may be greater than the thickness (T4) of the third outer part (135c).

[0139] As the front skin (132) of the flat plate (130P) is pressed in the direction of the rear skin (133), the core (131) of the composite material panel (130) can absorb external force. The magnitude of the external force applied to the front skin (132) of the flat plate (130P) may be greater than the magnitude of the external force applied to the rear skin (133) of the flat plate (130P). The core (131) of the composite material panel (130) can absorb shock as well as secure rigidity.

[0140] The fastening groove (H) may protrude from the rear skin (133) of the receiving portion (137). The fastening groove (H) may be recessed in the front skin (132) of the receiving portion (137) and may protrude from the rear skin (133) of the receiving portion (137). The center of the fastening groove (H) may be penetrated.

[0141]

[0142] Referring to FIGS. 26 and 27, the outer part (135) may be formed around the perimeter of the flat plate (130P). The outer part (135) may form a step that is lower from the flat plate (130P). The outer part (135) may be formed by the front skin (132, FIG. 2) being indented as the core (131, FIG. 2) is compressed. The outer part (135) may also be formed by the front skin (132, FIG. 2) being indented as the core (131, FIG. 2) is compressed and the rear skin (133, FIG. 2) protruding.

[0143] The third outer part (135c) may be formed adjacent to the lower edge of the flat plate (130P). The third outer part (135c) may be formed at the bottom of the flat plate (130P), forming a step that is lower from the flat plate (130P).

[0144] The receiving portions (137, 137a, 137b) may be formed on the third outer part (135c). The receiving portions (137, 137a, 137b) may be formed by pressing the flat portion (130P). The receiving portions (137, 137a, 137b) may form a step that is lower from the flat portion (130P). For example, the receiving portions (137, 137a, 137b) may form the same plane as the third outer part (135c). As another example, the receiving portions (137, 137a, 137b) may be formed by pressing the third outer part (135c).

[0145] The barrier slit (SL1, SL2) may be located at the boundary between the flat portion (130P) and the receiving portion (137a, 137b). The barrier slit (SL1, SL2) may be referred to as a barrier (SL1, SL2). The barrier slit (SL1, SL2) may be referred to as an incision portion (SL1, SL2). The barrier slit (SL1, SL2) may be referred to as a barrier cut-out (SL1, SL2).

[0146] Barrier slits (SL1, SL2) may be formed on the inclined surface of a step that slopes downward from the flat plate portion (130P) to the receiving portions (137a, 137b). Barrier slits (SL1, SL2) may be formed by cutting out a part of the flat plate portion (130P) and a part of the receiving portions (137a, 137b). There may be multiple barrier slits (SL1, SL2). Multiple barrier slits (SL1, SL2) may include a first slit (SL1) and a second slit (SL2).

[0147] The first slit (SL1) may include a first part (P1), a second part (P2), a third part (P3), a fourth part (P4), a fifth part (P5), a sixth part (P6), a seventh part (P7), and an eighth part (P8). The first part (P1), the second part (P2), and the third part (P3) may form the lower edge of the first slit (SL1). The fourth part (P4), the fifth part (P5), and the sixth part (P6) may form the upper edge of the first slit (SL1). The upper edge of the first slit (SL1) may be parallel to the lower edge of the first slit (SL1). The seventh part (P7) may connect one end of the upper edge of the first slit (SL1) with one end of the lower edge, and the eighth part (P8) may connect the other end of the upper edge of the first slit (SL1) with the other end of the lower edge. Part 7 (P7) can be placed next to Part 8 (P8).

[0148] The first part (P1) may be parallel to the third part (P3). The third part (P3) may be spaced apart from the first part (P1). The second part (P2) may connect the first part (P1) and the third part (P3). The fourth part (P4) may be parallel to the sixth part (P6). The sixth part (P6) may be spaced apart from the fourth part (P4). The fifth part (P5) may connect the fourth part (P4) and the sixth part (P6).

[0149] The fourth part (P4), the fifth part (P5), and the sixth part (P6) can form one edge of the flat plate portion (130P). The first part (P1), the second part (P2), and the third part (P3) can form one edge of the receiving portion (137a, 137b). The seventh part (P7) and the eighth part (P8) can form one edge of the step connecting the receiving portion (137a, 137b) and the flat plate portion (130P).

[0150] The second distance (D2) from the lower edge of the receiving portion (137a, 137b) to the third part (P3) may be greater than the first distance (D1) from the lower edge of the receiving portion (137a, 137b) to the first part (P1).

[0151] The second slit (SL2) may include a first part (E1), a second part (E2), a third part (E3), a fourth part (E4), a fifth part (E5), a sixth part (E6), a seventh part (E7), and an eighth part (E8). The first part (E1), the second part (E2), and the third part (E3) may form the lower edge of the second slit (SL2). The fourth part (E4), the fifth part (E5), and the sixth part (E6) may form the upper edge of the second slit (SL2). The upper edge of the second slit (SL2) may be parallel to the lower edge of the second slit (SL2). The seventh part (E7) may connect one end of the upper edge of the second slit (SL2) with one end of the lower edge, and the eighth part (E8) may connect the other end of the upper edge of the second slit (SL2) with the other end of the lower edge. Part 7 (E7) can be placed next to Part 8 (E8).

[0152] The first part (E1) may be parallel to the third part (E3). The third part (E3) may be spaced apart from the first part (E1). The second part (E2) may connect the first part (E1) and the third part (E3). The fourth part (E4) may be parallel to the sixth part (E6). The sixth part (E6) may be spaced apart from the fourth part (E4). The fifth part (E5) may connect the fourth part (E4) and the sixth part (E6).

[0153] The fourth part (E4), the fifth part (E5), and the sixth part (E6) can form one edge of the flat plate portion (130P). The first part (E1), the second part (E2), and the third part (E3) can form one edge of the receiving portion (137a, 137b). The seventh part (E7) and the eighth part (E8) can form one edge of the step connecting the receiving portion (137a, 137b) and the flat plate portion (130P).

[0154] The second distance (D2) from the lower edge of the receiving portion (137a, 137b) to the third part (E3) may be greater than the first distance (D1) from the lower edge of the receiving portion (137a, 137b) to the first part (E1). The first slit (SL1) may be symmetrical to the second slit (SL2).

[0155] Accordingly, the defect in the display panel (110) being poorly bonded to the composite material panel (130) due to the curvature occurring in the skin (132, 133) while forming the receiving portion (137a, 137b) can be improved.

[0156]

[0157] Referring to FIGS. 28 to 30, a barrier line (240) may be formed on the front surface of a composite material panel (130). The barrier line (240) may be formed by indenting the front skin (132, see FIG. 2) of the composite material panel (130) and compressing the core (131, see FIG. 2). When the barrier line (240) is formed on the front skin (132, see FIG. 2), it may be referred to as a front barrier line (240). When the barrier line (240) is formed on the rear skin (133, see FIG. 2), it may be referred to as a rear barrier line (240). The front barrier line (240) may be symmetrical to the rear barrier line (240).

[0158] The front barrier line (240) may include a first front barrier horizontal line (241), a second front barrier horizontal line (242), a third front barrier horizontal line (243), a fourth front barrier horizontal line (244), a first front barrier vertical line (245), a second front barrier vertical line (246), a third front barrier vertical line (247), and a fourth front barrier vertical line (248).

[0159] The first front barrier horizontal line (241) can form the upper edge of the front barrier line (240). The fourth front barrier horizontal line (244) can form the lower edge of the front barrier line (240). The second front barrier horizontal line (242) can be located between the first front barrier horizontal line (241) and the fourth front barrier horizontal line (244). The third front barrier horizontal line (243) can be located between the second front barrier horizontal line (242) and the fourth front barrier horizontal line (244).

[0160] The first front barrier vertical line (245) can be connected to one end of the first front barrier horizontal line (241). The second front barrier vertical line (246) can be connected to one end of the second front barrier horizontal line (242), one end of the third front barrier horizontal line (243), and one end of the fourth front barrier horizontal line (244).

[0161] The third front barrier vertical line (247) can connect the other end of the second front barrier horizontal line (242), the other end of the third front barrier horizontal line (243), and the other end of the fourth front barrier horizontal line (244).

[0162] The fourth front barrier vertical line (248) can be connected to the other end of the first front barrier horizontal line (241).

[0163] The first front barrier horizontal line (241) may be parallel to the second front barrier horizontal line (242), the third front barrier horizontal line (243), and / or the fourth front barrier horizontal line (244). The first front barrier vertical line (245) may be parallel to the second front barrier vertical line (246), the third front barrier vertical line (247), and / or the fourth front barrier vertical line (248).

[0164] The width of the first front barrier horizontal line (241) may be equal to the width of the first front barrier vertical line (245) and / or the width of the fourth front barrier vertical line (248). The width of the second front barrier horizontal line (242) may be equal to the width of the second front barrier vertical line (246) and / or the width of the third front barrier vertical line (247). The width of the third front barrier horizontal line (243) may be equal to the width of the fourth front barrier horizontal line (244). The width of the third front barrier horizontal line (243) may be greater than the width of the second front barrier horizontal line (242).

[0165] The corner hole (260) may include a first corner hole (261) and a second corner hole (262). The first corner hole (261) may be formed at the corner formed by the first front barrier horizontal line (241) and the first front barrier vertical line (245). The first corner hole (261) may be spaced apart from the second front barrier horizontal line (242) and / or the second front barrier vertical line (246). The corner hole (260) may block thermal deformation that may occur due to the intersection of the barrier horizontal line (241) and the barrier vertical line (248). If thermal deformation occurs in the front skin (132, see FIG. 2) of the composite material panel (130), the flatness of the display panel (110, see FIG. 15) may be reduced, and distortion of the screen may occur.

[0166] The second corner hole (262) may be formed at the corner formed by the first front barrier horizontal line (241) and the fourth front barrier vertical line (248). The second corner hole (262) may be spaced apart from the second front barrier horizontal line (242) and / or the fourth front barrier vertical line (248).

[0167] The fastening groove (H) in which the fastening member (h) is formed may be located between the first front barrier horizontal line (241) and the second front barrier horizontal line (242). The fastening groove (H) in which the fastening member (h) is formed may be located between the first front barrier vertical line (245) and the second front barrier vertical line (246). The fastening groove (H) in which the fastening member (h) is formed may be located between the third front barrier vertical line (247) and the fourth front barrier vertical line (248). Accordingly, thermal deformation of the front skin (132, see FIG. 2) that may occur when heat is applied to the composite material panel (130) in which the fastening member (h) and the fastening groove (H) are formed can be prevented. If thermal deformation occurs in the front skin (132, see FIG. 2) of the composite material panel (130), the flatness of the display panel (110, see FIG. 15) is reduced, and distortion of the screen may occur.

[0168]

[0169] Referring to FIGS. 31 and 32, a heat sheet (ST) may be positioned between a display panel (110, see FIG. 15) and a front skin (132) of a composite panel (130). The heat sheet (ST) may be fixed or bonded to the front skin (132) of the composite panel (130). The heat sheet (ST) may be referred to as a heat dissipation sheet (ST), an adhesive layer (ST), or a spread sheet (ST). For example, the heat sheet (ST) may include aluminum.

[0170] There may be multiple heat sheets (ST). A first heat sheet (ST1) may cover a first corner hole (261). A first heat sheet (ST1) may cover a portion of the first front barrier horizontal line (241) and / or a portion of the second front barrier horizontal line (242). A first heat sheet (ST1) may cover a portion of the first front barrier vertical line (245) and / or a portion of the second front barrier vertical line (246). A first heat sheet (ST1) may be adhered to the front skin (132) of the flat portion (130P) of the composite material panel (130). A first heat sheet (ST1) may extend along the first front barrier horizontal line (241) and / or the second front barrier horizontal line (242).

[0171] The second heat sheet (ST2) may cover a portion of the first front barrier vertical line (245) and / or a portion of the second front barrier vertical line (246). The second heat sheet (ST2) may be adhered to the front skin (132) of the flat portion (130P) of the composite material panel (130). The second heat sheet (ST2) may extend parallel to the first heat sheet (ST1). The second heat sheet (ST2) may be spaced apart from the first heat sheet (ST1).

[0172] The third heat sheet (ST3) may cover a portion of the first front barrier vertical line (245) and / or a portion of the second front barrier vertical line (246). The third heat sheet (ST3) may be bonded to the front skin (132) of the flat portion (130P) of the composite material panel (130). The third heat sheet (ST3) may extend parallel to the second heat sheet (ST2). The third heat sheet (ST3) may be spaced apart from the second heat sheet (ST2). The third heat sheet (ST3) may be located opposite the first heat sheet (ST1) with respect to the second heat sheet (ST2).

[0173] The fourth heat sheet (ST4) may cover the second corner hole (262). The fourth heat sheet (ST4) may cover a portion of the first front barrier horizontal line (241) and / or a portion of the second front barrier horizontal line (242). The fourth heat sheet (ST4) may cover a portion of the third front barrier vertical line (247) and / or a portion of the fourth front barrier vertical line (248). The fourth heat sheet (ST4) may be adhered to the front skin (132) of the flat portion (130P) of the composite material panel (130). The fourth heat sheet (ST4) may extend along the first front barrier horizontal line (241) and / or the second front barrier horizontal line (242).

[0174] The fifth heat sheet (ST5) may cover a portion of the third front barrier vertical line (247) and / or a portion of the fourth front barrier vertical line (248). The fifth heat sheet (ST5) may be adhered to the front skin (132) of the flat portion (130P) of the composite material panel (130). The fifth heat sheet (ST5) may extend parallel to the fourth heat sheet (ST4). The fifth heat sheet (ST5) may be spaced apart from the fourth heat sheet (ST4).

[0175] The sixth heat sheet (ST6) may cover a portion of the third front barrier vertical line (247) and / or a portion of the fourth front barrier vertical line (248). The sixth heat sheet (ST6) may be bonded to the front skin (132) of the flat portion (130P) of the composite material panel (130). The sixth heat sheet (ST6) may extend parallel to the fifth heat sheet (ST5). The sixth heat sheet (ST6) may be spaced apart from the fifth heat sheet (ST5). The sixth heat sheet (ST6) may be located opposite the fourth heat sheet (ST4) with respect to the fifth heat sheet (ST5).

[0176] Accordingly, the heat sheet (ST) can absorb heat generated from the display panel (110, see FIG. 15) and disperse the heat concentrated in the corner hole (260).

[0177]

[0178] Referring to FIG. 33, a barrier line (240) can be formed on the front surface of a composite material panel (130). The barrier line (240) can be formed by indenting the front skin (132) of the composite material panel (130) and compressing the core (131, see FIG. 2). The barrier line (240) formed on the front skin (132) can be referred to as a front barrier line (240).

[0179] The front barrier line (240) may include a first front barrier horizontal line (241), a second front barrier horizontal line (242), a third front barrier horizontal line (243), a fourth front barrier horizontal line (244), a first front barrier vertical line (245), a second front barrier vertical line (246), a third front barrier vertical line (247), and a fourth front barrier vertical line (248).

[0180] The first front barrier horizontal line (241) can form the upper edge of the front barrier line (240). The fourth front barrier horizontal line (244) can form the lower edge of the front barrier line (240). The second front barrier horizontal line (242) can be located between the first front barrier horizontal line (241) and the fourth front barrier horizontal line (244). The third front barrier horizontal line (243) can be located between the second front barrier horizontal line (242) and the fourth front barrier horizontal line (244).

[0181] The second front barrier vertical line (246) can connect one end of the third front barrier horizontal line (243) and one end of the fourth front barrier horizontal line (244). The first front barrier vertical line (245) is parallel to the second front barrier vertical line (246) and can be spaced apart from the second front barrier vertical line (246).

[0182] The third front barrier vertical line (247) can connect the other end of the third front barrier horizontal line (243) and the other end of the fourth front barrier horizontal line (244). The fourth front barrier vertical line (248) can be parallel to the third front barrier vertical line (247) and spaced apart from the third front barrier vertical line (247).

[0183] The first front barrier horizontal line (241) may be parallel to the second front barrier horizontal line (242), the third front barrier horizontal line (243), and / or the fourth front barrier horizontal line (244). The first front barrier vertical line (245) may be parallel to the second front barrier vertical line (246), the third front barrier vertical line (247), and / or the fourth front barrier vertical line (248).

[0184] The width of the first front barrier horizontal line (241) may be equal to the width of the first front barrier vertical line (245) and / or the width of the fourth front barrier vertical line (248). The width of the second front barrier horizontal line (242) may be equal to the width of the second front barrier vertical line (246) and / or the width of the third front barrier vertical line (247). The width of the third front barrier horizontal line (243) may be equal to the width of the fourth front barrier horizontal line (244). The width of the third front barrier horizontal line (243) may be greater than the width of the second front barrier horizontal line (242).

[0185] The distance (L6) between the third front barrier horizontal line (243) and the fourth front barrier horizontal line (244) may be greater than the distance (L5) between the second front barrier horizontal line (242) and the third front barrier horizontal line (243).

[0186] A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the first front barrier horizontal line (241) and the second front barrier horizontal line (242). A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the first front barrier vertical line (245) and the second front barrier vertical line (246). A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the third front barrier vertical line (247) and the fourth front barrier vertical line (248).

[0187] The side front barrier vertical line (270) may be formed on the front skin (132) of the flat portion (130P) of the composite material panel (130). There may be multiple side front barrier vertical lines (270). The length of the side front barrier vertical line (270) may be 1.5 times or more, or 2 times or less, the length of the first front barrier vertical line (245). The side front barrier vertical line (270) may extend to the bottom of the flat portion (130P).

[0188] The first side front barrier vertical line (271) may be located between the second short side (SS2) of the composite material panel (130) and the first front barrier vertical line (245). The second side front barrier vertical line (272) may be located between the first side front barrier vertical line (271) and the first front barrier vertical line (245). The gap (L7) between the first front barrier vertical line (245) and the second side front barrier vertical line (272) may be smaller than the gap (L8) between the first side front barrier vertical line (271) and the second side front barrier vertical line (272).

[0189] The fourth side front barrier vertical line (274) may be located between the first short side (SS1) of the composite panel (130) and the fourth front barrier vertical line (248). The third side front barrier vertical line (273) may be located between the fourth side front barrier vertical line (274) and the fourth front barrier vertical line (248). The gap (L7) between the fourth front barrier vertical line (248) and the third side front barrier vertical line (273) may be smaller than the gap (L8) between the fourth side front barrier vertical line (274) and the third side front barrier vertical line (273).

[0190] Accordingly, thermal deformation of the front skin (132) that may occur when heat is applied to the composite material panel (130) having a fastening member (h, see FIG. 8) and a fastening groove (H, see FIG. 8) formed therein can be prevented. If thermal deformation occurs in the front skin (132) of the composite material panel (130), the flatness of the display panel (110, see FIG. 15) is reduced, and distortion of the screen may occur. In addition, localized heat concentration on the composite material panel (130) can be prevented.

[0191]

[0192] Referring to FIG. 34, a barrier line (250) can be formed on the rear surface of a composite material panel (130). The barrier line (250) can be formed by indenting the rear skin (133) of the composite material panel (130) and compressing the core (131, see FIG. 2). The barrier line (250) formed on the rear skin (133) can be referred to as a rear barrier line (250).

[0193] The rear barrier line (250) may include a first rear barrier horizontal line (251), a second rear barrier horizontal line (252), a third rear barrier horizontal line (253), a fourth rear barrier horizontal line (254), a first rear barrier vertical line (255), a second rear barrier vertical line (256), a third rear barrier vertical line (257), and a fourth rear barrier vertical line (258).

[0194] The first rear barrier horizontal line (251) can form the upper side of the rear barrier line (250). The fourth rear barrier horizontal line (254) can form the lower side of the rear barrier line (250). The second rear barrier horizontal line (252) can be located between the first rear barrier horizontal line (251) and the fourth rear barrier horizontal line (254). The third rear barrier horizontal line (253) can be located between the second rear barrier horizontal line (252) and the fourth rear barrier horizontal line (254).

[0195] The second rear barrier vertical line (256) can connect one end of the third rear barrier horizontal line (253) and one end of the fourth rear barrier horizontal line (254). The first rear barrier vertical line (255) can be parallel to the second rear barrier vertical line (256) and spaced apart from the second rear barrier vertical line (256).

[0196] The third rear barrier vertical line (257) can connect the other end of the third rear barrier horizontal line (253) and the other end of the fourth rear barrier horizontal line (254). The fourth rear barrier vertical line (258) can be parallel to the third rear barrier vertical line (257) and spaced apart from the third rear barrier vertical line (257).

[0197] The first rear barrier horizontal line (251) may be parallel to the second rear barrier horizontal line (252), the third rear barrier horizontal line (253), and / or the fourth rear barrier horizontal line (254). The first rear barrier vertical line (255) may be parallel to the second rear barrier vertical line (256), the third rear barrier vertical line (257), and / or the fourth rear barrier vertical line (258).

[0198] The width of the first rear barrier horizontal line (251) may be the same as the width of the first rear barrier vertical line (255) and / or the width of the fourth rear barrier vertical line (258). The width of the second rear barrier horizontal line (252) may be the same as the width of the second rear barrier vertical line (256) and / or the width of the third rear barrier vertical line (257). The width of the third rear barrier horizontal line (253) may be the same as the width of the fourth rear barrier horizontal line (254). The width of the third rear barrier horizontal line (253) may be greater than the width of the second rear barrier horizontal line (252).

[0199] The distance (L6) between the third rear barrier horizontal line (253) and the fourth rear barrier horizontal line (254) may be greater than the distance (L5) between the second rear barrier horizontal line (252) and the third rear barrier horizontal line (253).

[0200] The distance (L10) from the first rear barrier vertical line (255) to the first short side (SS1) of the composite material panel (130) may be the same as the distance (L10) from the fourth rear barrier vertical line (258) to the second short side (SS2) of the composite material panel (130).

[0201] A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the first rear barrier horizontal line (251) and the second rear barrier horizontal line (252). A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the first rear barrier vertical line (255) and the second rear barrier vertical line (256). A fastening groove (H, see FIG. 8) formed with a fastening member (h, see FIG. 8) may be located between the third rear barrier vertical line (257) and the fourth rear barrier vertical line (258).

[0202] Accordingly, thermal deformation of the rear skin (133) that may occur when heat is applied to the composite material panel (130) having a fastening member (h, see FIG. 8) and a fastening groove (H, see FIG. 8) formed therein can be prevented. In addition, localized heat concentration on the composite material panel (130) can be prevented.

[0203]

[0204] Referring to FIG. 35 together with FIG. 33 and FIG. 34, the aforementioned barrier lines (240, 250, 270) may include a flat line (F), an inclined line (I), and / or an end line (E). The flat line (F) may form a low step from the front skin (132) or the rear skin (133). The end line (E) may form a progressive step from the front skin (132) or the rear skin (133). The inclined line (I) may connect the flat line (F) and the end line (E). The step of the inclined line (I) adjacent to the flat line (F) may be the same as the step of the flat line (F). The step of the inclined line (I) adjacent to the end line (E) may be the same as the step of the end line (E) adjacent to the inclined line (I). The end of the end line (E) can be connected to the front skin (132) or rear skin (133) without a step.

[0205] Accordingly, the flatness of the front skin (132) and / or rear skin (133) can be prevented from being reduced by heat transferred to the front skin (132) and / or rear skin (133) of the composite material panel (130).

[0206]

[0207] Referring to FIGS. 1 to 35, the display device comprises: a display panel; and a composite material plate to which the display panel is coupled, wherein the composite material plate comprises: a front skin forming a front surface; a rear skin forming a rear surface and facing the front skin; a core located between the front skin and the rear skin and comprising fibers; a plurality of barrier lines extending inwardly from at least one of the front skin or the rear skin toward the core; and a corner hole that overlaps only one of the plurality of barrier lines and penetrates the front skin, the core, and the rear skin.

[0208] The plurality of barrier lines includes: a first barrier horizontal line; a second barrier horizontal line parallel to the first barrier horizontal line; a first barrier vertical line intersecting the first barrier horizontal line; and a second barrier vertical line parallel to the first barrier vertical line and intersecting the second barrier horizontal line, and the corner hole may be located at the corner formed by the first barrier horizontal line and the first barrier vertical line.

[0209] The corner hole may be spaced apart from the second barrier horizontal line and the second barrier vertical line.

[0210] The composite plate includes a fastening groove located between the plurality of barrier lines, and the fastening groove allows the front skin or the rear skin to be recessed toward the core.

[0211] The above fastening groove may include a fastening hole that penetrates the front skin or the rear skin.

[0212] The plurality of barrier lines comprises: a first barrier horizontal line; a second barrier horizontal line parallel to the first barrier horizontal line; a third barrier horizontal line parallel to the second barrier horizontal line; a first barrier vertical line intersecting the first barrier horizontal line; and a second barrier vertical line parallel to the first barrier vertical line and intersecting the second barrier horizontal line and the third barrier horizontal line, and the fastening groove may be located between the first barrier horizontal line and the second barrier horizontal line, or between the first barrier vertical line and the second barrier vertical line.

[0213] The corner hole may be formed at the corner where the first barrier horizontal line and the first barrier vertical line intersect.

[0214] The corner hole may be spaced apart from the second barrier horizontal line and the second barrier vertical line.

[0215] The width of the first barrier horizontal line corresponds to the width of the first barrier vertical line, and the width of the second barrier horizontal line corresponds to the width of the second barrier vertical line.

[0216] The width of the third barrier horizontal line may be greater than the width of the second barrier vertical line.

[0217] The above composite plate may further include a heat sheet covering at least a portion of the plurality of barrier lines and the corner hole.

[0218] A display device comprises: a display panel; and a composite material plate to which the display panel is coupled, wherein the composite material plate comprises: a front skin forming a front surface; a rear skin forming a rear surface and facing the front skin; a core located between the front skin and the rear skin and comprising fibers; and a plurality of barrier lines extending inwardly from at least one of the front skin or the rear skin toward the core, wherein the plurality of barrier lines comprises: a first plurality of barrier horizontal lines; and a first plurality of barrier vertical lines aligned in a direction intersecting the first plurality of barrier horizontal lines, wherein the first plurality of barrier vertical lines may be spaced apart from the first plurality of horizontal lines.

[0219] Each of the plurality of barrier lines may include: a flat line forming a low step from the front skin or the rear skin; an end line forming the end of each of the plurality of barrier lines and connected to the front skin or the rear skin without a step; and an inclined line connecting the flat line and the end line.

[0220] The composite plate includes a fastening groove located between the plurality of barrier lines, and the fastening groove allows the front skin or the rear skin to be recessed toward the core.

[0221] The above fastening groove may include a fastening hole that penetrates the front skin or the rear skin.

[0222] The above composite material plate comprises: a first long side; a second long side facing the first long side; a first short side connecting the first long side and the second long side; and a second short side facing the first short side and connecting the first long side and the second long side, and the plurality of barrier lines may further include: a first side barrier vertical line parallel to the first plurality of barrier vertical lines and located between the first plurality of barrier vertical lines and the first short side, or between the first plurality of barrier vertical lines and the second short side.

[0223] The length of the first side barrier vertical line may be longer than the length of the first plurality of barrier vertical lines.

[0224] The plurality of barrier lines may further include a second side barrier vertical line that is parallel to the first plurality of barrier vertical lines and is located between the first plurality of barrier vertical lines and the first side barrier vertical line.

[0225] The length of the second side barrier vertical line can correspond to the length of the first side barrier vertical line.

[0226] The spacing between the first side barrier vertical line and the second side barrier vertical line may be greater than the spacing between the second side barrier vertical line and the first plurality of barrier vertical lines.

[0227]

[0228] Some or other embodiments of the present disclosure described above are not exclusive or distinct from one another. Some or other embodiments of the present disclosure described above may be used in combination or combined for their respective configurations or functions.

[0229] For example, this means that configuration A described in a specific embodiment and / or drawing and configuration B described in another embodiment and / or drawing can be combined. That is, even if the combination between configurations is not directly described, it means that combination is possible, except in cases where it is described that combination is impossible.

[0230] 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.

Claims

1. Display panel; and, The above-mentioned display panel includes a composite material plate to which it is coupled, and The above composite plate is: Front skin forming the front; A rear skin forming a rear and facing the front skin; A core located between the front skin and the rear skin, comprising fibers; A plurality of barrier lines extending longitudinally and recessed toward the core from at least one of the front skin or the rear skin; and, A display device comprising a corner hole that overlaps only one of the plurality of barrier lines and penetrates the front skin, the core, and the rear skin.

2. In Paragraph 1, The above plurality of barrier lines are: First barrier horizontal line; A second barrier horizontal line parallel to the first barrier horizontal line; A first barrier vertical line intersecting the first barrier horizontal line; and, It includes a second barrier vertical line that is parallel to the first barrier vertical line and intersects the second barrier horizontal line, and The above corner hole is, A display device located at the corner formed by the first barrier horizontal line and the first barrier vertical line.

3. In Paragraph 2, The above corner hole is, A display device spaced apart from the second barrier horizontal line and the second barrier vertical line.

4. In Paragraph 1, The above composite plate is: It includes a fastening groove located between the plurality of barrier lines mentioned above, and The above fastening groove is, A display device in which the front skin or the rear skin is recessed toward the core.

5. In Paragraph 4, The above fastening groove is, A display device comprising a fastener penetrating the front skin or the rear skin.

6. In Paragraph 5, The above plurality of barrier lines are: First barrier horizontal line; A second barrier horizontal line parallel to the first barrier horizontal line; A third barrier horizontal line parallel to the second barrier horizontal line above; A first barrier vertical line intersecting the first barrier horizontal line; and, It includes a second barrier vertical line that is parallel to the first barrier vertical line and intersects the second barrier horizontal line and the third barrier horizontal line, and The above fastening groove is, Located between the first barrier horizontal line and the second barrier horizontal line, A display device located between the first barrier vertical line and the second barrier vertical line.

7. In Paragraph 6, The above corner hole is, A display device formed at the corner where the first barrier horizontal line and the first barrier vertical line intersect.

8. In Paragraph 7, The above corner hole is, A display device spaced apart from the second barrier horizontal line and the second barrier vertical line.

9. In Paragraph 8, The width of the first barrier horizontal line is, Corresponding to the width of the vertical line of the first barrier mentioned above, The width of the second barrier horizontal line mentioned above is, A display device corresponding to the width of the second barrier vertical line.

10. In Paragraph 9, The width of the horizontal line of the third barrier mentioned above is, A display device larger than the width of the second barrier vertical line.

11. In Paragraph 1, The above composite plate is: A display device further comprising at least a portion of the plurality of barrier lines and a heat sheet covering the corner hole.

12. Display panel; and, The above-mentioned display panel includes a composite material plate to which it is coupled, and The above composite plate is: Front skin forming the front; A rear skin forming a rear and facing the front skin; A core located between the front skin and the rear skin and comprising fibers; and, It includes a plurality of barrier lines that are recessed toward the core and extend long from at least one of the front skin or the rear skin, and The above plurality of barrier lines are: First, a plurality of barrier horizontal lines; and, It includes a first plurality of barrier vertical lines aligned in a direction intersecting the first plurality of barrier horizontal lines, and The above first plurality of barrier vertical lines are, A display device spaced apart from the first plurality of horizontal lines.

13. In Paragraph 12, Each of the above plurality of barrier lines is: A flat line forming a low step from the front skin or the rear skin; An end line forming the respective end of each of the plurality of barrier lines and connected to the front skin or the rear skin without a step; and, A display device including an inclined line connecting the flat line and the end line.

14. In Paragraph 13, The above composite plate is: It includes a fastening groove located between the plurality of barrier lines mentioned above, and The above fastening groove is, A display device in which the front skin or the rear skin is recessed toward the core.

15. In Paragraph 14, The above fastening groove is, A display device comprising a fastener penetrating the front skin or the rear skin.

16. In Paragraph 15, The above composite plate is: First side; A second long side facing the first long side; A first short side connecting the first long side and the second long side; and, It includes a second short side facing the first short side and connecting the first long side and the second long side, The above plurality of barrier lines are: Parallel to the vertical lines of the first plurality of barriers mentioned above, A display device further comprising a first side barrier vertical line located between the first plurality of barrier vertical lines and the first short side, or between the first plurality of barrier vertical lines and the second short side.

17. In Paragraph 16, The length of the vertical line of the first side barrier mentioned above is, A display device longer than the length of the first plurality of barrier vertical lines.

18. In Paragraph 16, The above plurality of barrier lines are: Parallel to the vertical lines of the first plurality of barriers mentioned above, A display device further comprising a second side barrier vertical line located between the first plurality of barrier vertical lines and the first side barrier vertical line.

19. In Paragraph 18, The length of the vertical line of the second side barrier mentioned above is, A display device corresponding to the length of the first side barrier vertical line.

20. In Paragraph 19, The spacing between the first side barrier vertical line and the second side barrier vertical line is, A display device with a spacing greater than that between the second side barrier vertical line and the first plurality of barrier vertical lines.