Display device

Abstract

A display device is disclosed. The display device comprises: a display panel; a composite material plate located at the rear of the display panel; and a side frame located between the display panel and the composite material plate, fixed to the composite material plate, and to which the display panel is coupled. The composite material plate may include: 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 receiving portion in which the front skin and the core are compressed to form a step in which the front skin is lowered; and a first cable hole located adjacent to the receiving portion and formed through the front skin and the rear skin.

Description

Technology Field

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

[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 on structures to secure the rigidity of large-screen ultra-thin display devices and to dissipate heat associated with high image quality. The problem to be solved

[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 prevent thermal deformation of the display device and ensure high-temperature reliability.

[0008] Another objective may be to provide a display device that can prevent damage to the wired cable. means of solving the problem

[0009] A display device according to one aspect of the present disclosure for achieving the above-described purpose comprises: a display panel; a composite material plate located at the rear of the display panel; and a side frame located between the display panel and the composite material plate, fixed to the composite material plate, and 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 receiving portion in which the front skin and the core are compressed to form a step in which the front skin is lowered; and a first cable hole located adjacent to the receiving portion and formed through the front skin and the rear skin. Effects of the invention

[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, thermal deformation of the display device can be prevented and high-temperature reliability can be ensured.

[0013] According to at least one of the embodiments of the present disclosure, a display device capable of preventing damage to a wired cable can be provided.

[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. Brief explanation of the drawing

[0015] FIGS. 1 to 29 are drawings illustrating examples of display devices according to embodiments of the present disclosure. Specific details for implementing the invention

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

[0021] Singular expressions include plural expressions 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] Referring to FIG. 1, the display device (100) may include a display panel (110). The display panel (110) may display an image.

[0024] 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).

[0025] 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).

[0026] 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).

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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), or a middle frame (130).

[0031] 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.

[0032] 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).

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Accordingly, the bending stiffness and / or torsional stiffness of the display device can be improved.

[0037] 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.

[0038] 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).

[0039] 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.

[0040] 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.

[0041] 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).

[0042] 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.

[0043] 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.

[0044] 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).

[0045] 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).

[0046] 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).

[0047] 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).

[0048] 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.

[0049] 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).

[0050] 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).

[0051] 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.

[0052] 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).

[0053] 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).

[0054] Referring to FIGS. 9 and 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).

[0055] 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 (151) and extending long in the left-right direction of the PCB plate (151). The vertical portion (153) may be formed by protruding from the front to the rear of the PCB plate (151) 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).

[0056] 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.

[0057] 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).

[0058] 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).

[0059] 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).

[0060] 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).

[0061] 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).

[0062] 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).

[0063] 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).

[0064] 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.

[0065] 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).

[0066] 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).

[0067] 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).

[0068] 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).

[0069] 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).

[0070] 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).

[0071] Referring to FIGS. 16 and 17, an inner frame (210, 230) may be formed on the front and / or rear of a composite 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 panel (130) being pressed and the core (131, see FIG. 2) being compressed.

[0072] 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).

[0073] 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).

[0074] 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).

[0075] 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, not shown). 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, not shown) 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).

[0076] 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).

[0077] 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). The PCB plate (150) may include a cable hole (156). The cable hole (156) of the PCB plate (150) may correspond to the cable hole (136) of the composite material panel (130).

[0078] Accordingly, the bending stiffness and / or torsional stiffness of the composite material panel (130) can be improved.

[0079] 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).

[0080] 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).

[0081] 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).

[0082] 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).

[0083] 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).

[0084] 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).

[0085] 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).

[0086] 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).

[0087] 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).

[0088] 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).

[0089] 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).

[0090] 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).

[0091] 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.

[0092] Accordingly, the bending stiffness and / or torsional stiffness of the composite material panel (130) can be improved.

[0093] 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).

[0094] 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).

[0095] 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).

[0096] 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).

[0097] 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).

[0098] 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 storage 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).

[0099] 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 storage 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).

[0100] 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 storage 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).

[0101] The 11th adhesive member (AD11) is extended along the longitudinal direction of the second front horizontal line (212) and can be fixed to the flat plate (130P) between the second front horizontal line (212) and the third front horizontal line (213). The 12th adhesive member (AD12) is extended along the longitudinal direction of the second front horizontal line (212) and can be located between the first front horizontal line (211) and the second front horizontal line (212). The length of the 12th adhesive member (AD12) may be shorter than the length of the 11th adhesive member (AD11).

[0102] 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.

[0103] 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.

[0104] 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).

[0105] Referring to FIGS. 23 and 24 together with FIG. 17, the receiving portion (137) may include an inner receiving portion (137c) and an outer receiving portion (137d). The inner receiving portion (137c) may form a step lower from the flat portion (130P) and may be located between the outer receiving portion (137d) and the flat portion (130P). The outer receiving portion (137d) may form a step lower from the inner receiving portion (137c). A cable hole (136) may be formed through the inner receiving portion (137c) and / or the outer receiving portion (137d). A cable hole (136) may be formed through the boundary between the inner receiving portion (137c) and the outer receiving portion (137d).

[0106] The PCB plate (150) may include hole side parts (1561, 1562, 1563). The hole side parts (1561, 1562, 1563) may form the perimeter of the cable hole (156) of the PCB plate (150). The size of the cable hole (156) of the PCB plate (150) may be smaller than the size of the cable hole (136) of the composite material panel (130).

[0107] The hole side parts (1561, 1562, 1563) may include a first side part (1561), a second side part (1562), and a third side part (1563). The first side part (1561) may form the upper side of the cable hole (156) of the PCB plate (150). The second side part (1562) may form the right side of the cable hole (156) of the PCB plate (150). The third side part (1563) may form the left side of the cable hole (156) of the PCB plate (150).

[0108] The first side part (1561) may include a first rear part (1561a) and a first front part (1561b). The first rear part (1561a) may be connected to the plate (151) of the PCB plate (150). The first front part (1561b) may be formed as the first rear part (1561a) is folded or curled. The first front part (1561b) may face the front of the first rear part (1561a).

[0109] The second side part (1562) may include a second rear part (1562a) and a second front part (1562b). The second rear part (1562a) may be connected to the plate (151) of the PCB plate (150). The second front part (1562b) may be formed as the second rear part (1562a) is folded or curled. The second front part (1562b) may face the front of the second rear part (1562a).

[0110] The third side part (1563) may include a third rear part (1563a) and a third front part (1563b). The third rear part (1563a) may be connected to the plate (151) of the PCB plate (150). The third front part (1563b) may be formed as the third rear part (1563a) is folded or curled. The third front part (1563b) may face the front of the third rear part (1563a).

[0111] Referring to FIGS. 25 and 26, the PCB plate (150) may include hole side parts (1561, 1562, 1563, 1564). The hole side parts (1561, 1562, 1563, 1564) may form the perimeter of the cable hole (156) of the PCB plate (150). The size of the cable hole (156) of the PCB plate (150) may be smaller than the size of the cable hole (136) of the composite material panel (130).

[0112] The hole side parts (1561, 1562, 1563, 1564) may include a first side part (1561), a second side part (1562), a third side part (1563), and a fourth side part (1564). The first side part (1561) may form the upper side of the cable hole (156) of the PCB plate (150). The second side part (1562) may form the right side of the cable hole (156) of the PCB plate (150). The third side part (1563) may form the left side of the cable hole (156) of the PCB plate (150). The fourth side part (1564) may form the lower side of the cable hole (156) of the PCB plate (150).

[0113] The first side part (1561) may include a first rear part (1561a) and a first front part (1561b). The first rear part (1561a) may be connected to a plate (151, see FIG. 17) of a PCB plate (150). The first front part (1561b) may be formed as the first rear part (1561a) is folded or curled. The first front part (1561b) may face the front of the first rear part (1561a).

[0114] The second side part (1562) may include a second rear part (1562a) and a second front part (1562b). The second rear part (1562a) may be connected to the plate (151) of the PCB plate (150). The second front part (1562b) may be formed as the second rear part (1562a) is folded or curled. The second front part (1562b) may face the front of the second rear part (1562a).

[0115] The third side part (1563) may include a third rear part (1563a) and a third front part (1563b). The third rear part (1563a) may be connected to the plate (151) of the PCB plate (150). The third front part (1563b) may be formed as the third rear part (1563a) is folded or curled. The third front part (1563b) may face the front of the third rear part (1563a).

[0116] The fourth side part (1564) can be connected to the plate (151) of the PCB plate (150).

[0117] Referring to FIGS. 27 and 28, the PCB plate (150) may include hole side parts (1561, 1562, 1563, 1564). The hole side parts (1561, 1562, 1563, 1564) may form the perimeter of the cable hole (156) of the PCB plate (150). The size of the cable hole (156) of the PCB plate (150) may be smaller than the size of the cable hole (136) of the composite material panel (130).

[0118] The hole side parts (1561, 1562, 1563, 1564) may include a first side part (1561), a second side part (1562), a third side part (1563), and a fourth side part (1564). The first side part (1561) may form the upper side of the cable hole (156) of the PCB plate (150). The second side part (1562) may form the right side of the cable hole (156) of the PCB plate (150). The third side part (1563) may form the left side of the cable hole (156) of the PCB plate (150). The fourth side part (1564) may form the lower side of the cable hole (156) of the PCB plate (150).

[0119] The first side part (1561) may include a first rear part (1561a) and a first front part (1561b). The first rear part (1561a) may be connected to a plate (151, see FIG. 17) of a PCB plate (150). The first front part (1561b) may be formed as the first rear part (1561a) is folded or curled. The first front part (1561b) may face the front of the first rear part (1561a).

[0120] The second side part (1562) may include a second rear part (1562a) and a second front part (1562b). The second rear part (1562a) may be connected to the plate (151) of the PCB plate (150). The second front part (1562b) may be formed as the second rear part (1562a) is folded or curled. There may be multiple second front parts (1562b). The second front part (1562b) may face the front of the second rear part (1562a).

[0121] The third side part (1563) may include a third rear part (1563a) and a third front part (1563b). The third rear part (1563a) may be connected to the plate (151) of the PCB plate (150). The third front part (1563b) may be formed as the third rear part (1563a) is folded or curled. There may be multiple third front parts (1563b). The third front part (1563b) may face the front of the third rear part (1563a).

[0122] The fourth side part (1564) may include a fourth rear part (1564a) and a fourth front part (1564b). The fourth rear part (1564a) may be connected to the plate (151) of the PCB plate (150). The fourth front part (1564b) may be formed as the fourth rear part (1564a) is folded or curled. The fourth front part (1564b) may face the front of the fourth rear part (1564a).

[0123] Referring to FIG. 29 together with FIG. 15, the display panel (110) can be coupled to the front of the composite material panel (130). The source signal substrate (115) can be electrically connected to the display panel (110). The source signal substrate (115) can be connected to the display panel (110) by a flexible cable (113). The source signal substrate (115) can be located between the rear of the display panel (110) and the receiving portion (137) of the composite material panel (130). The source signal substrate (115) can be located in the space formed between the receiving portion (137) of the composite material panel (130) and the rear of the display panel (110).

[0124] The source signal board (115) may be adjacent to or overlap with the cable hole (136) of the composite material panel (130). The cable hole (156) of the PCB plate (150) may be aligned with the cable hole (136) of the composite material panel (130). A flexible flat cable (CB) may be connected to the source signal board (115). The flexible flat cable (CB) may be connected to the source signal board (115) by a connector (CN).

[0125] A flexible flat cable (CB) can be extended to the rear of the PCB plate (150) by passing through the cable hole (136) of the composite material panel (130) and the cable hole (156) of the PCB plate (150). The fracture surface of the front skin (132, see FIG. 2) and / or rear skin (133) through which the cable hole (136) passes may be formed roughly, and the cable (CB) passing through the cable hole (136) may be damaged.

[0126] The flexible flat cable (CB) can be in contact with or supported by the hole side parts (1561, 1562, 1564) of the PCB plate (150). Accordingly, damage to the flexible flat cable (CB) can be prevented.

[0127] Referring to FIGS. 1 through 29, the display device comprises: a display panel (110); a composite material plate (130) located at the rear of the display panel (110); a side frame (140) located between the display panel (110) and the composite material plate (130), fixed to the composite material plate (130), and to which the display panel (110) is coupled, wherein the composite material plate (130) comprises: a front skin (132) forming the front surface; a rear skin (133) forming the rear surface and facing the front skin (132); a core (131) located between the front skin (132) and the rear skin (133) and comprising fibers; and a receiving portion (137) in which the front skin (132) and the core (131) are compressed to form a step such that the front skin (132) is lowered. And, it may include a first cable hole (136) located adjacent to the receiving portion (137) and formed through the front skin (132) and the rear skin (133).

[0128] The apparatus further includes a PCB plate (150) located at the rear of the composite material plate (130), coupled to the rear surface of the composite material plate (130), and covering the first cable hole (136), wherein the PCB plate (150) may include a second cable hole (156) facing the first cable hole.

[0129] The size of the second cable hole (156) may be smaller than the size of the first cable hole (136).

[0130] The PCB plate (150) comprises: a hole side part forming the perimeter of the second cable hole (156), and the hole side part comprises: a first side part (1561) forming an upper edge; a second side part (1564) forming a lower edge facing the upper edge; a third side part (1563) connecting the first side part (1561) and the second side part (1564); and a fourth side part (1562) facing the third side part (1563) and connecting the first side part (1561) and the second side part (1564), and at least one of the first side part (1561), the second side part (1564), the third side part (1563), and the fourth side part (1564) may be exposed on the front of the composite plate (130) by the first cable hole (136).

[0131] The PCB plate (150) comprises: hole side parts (1561, 1562, 1563, 1564) forming the perimeter of the second cable hole (156), and the hole side parts (1561, 1562, 1563, 1564) may comprise: rear parts (1561a, 1562a, 1563a, 1564a) connected to the PCB plate (150); and front parts (1561b, 1562b, 1563b, 1564b) extending from the rear parts (1561a, 1562a, 1563a, 1564a) while being folded or bent.

[0132] A source signal substrate (115) located in the receiving portion (137) between the display panel (110) and the composite material plate (130); and a flexible flat cable (CB, FFC) connected to the source signal substrate (115) and extending from the front of the composite material plate (130) to the rear of the composite material plate (130) through the first cable hole (136) may be further included.

[0133] The device further includes a flexible cable (113) connecting the source signal substrate (115) and the display panel (110). The flexible cable (113) may be positioned between the display panel (110) and the composite material plate (130).

[0134] It further includes a PCB plate (150) located at the rear of the composite material plate (130), coupled to the rear surface of the composite material plate (130), and covering the first cable hole (136).

[0135] The PCB plate (150) includes a second cable hole (156) facing the first cable hole (136), and the flexible flat cable (CB) can be extended to the rear of the PCB plate (150) through the first cable hole (136) and the second cable hole (156).

[0136] The PCB plate (150) may include: a hole side part forming the perimeter of the second cable hole (156), and the hole side part may include: a rear part (1561a, 1562a, 1563a, 1564a) connected to the PCB plate (150); and a front part (1561b, 1562b, 1563b, 1564b) extending from the rear part (1561a, 1562a, 1563a, 1564a) while being folded or bent.

[0137] The size of the second cable hole (156) may be smaller than the size of the first cable hole (136).

[0138] The front of the second cable hole (156) can be exposed to the front of the composite material plate (130) through the first cable hole (136).

[0139] 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.

[0140] 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.

[0141] 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

Claim 1 delete Claim 2 delete Claim 3 A display device comprising: a display panel; a composite material plate located at the rear of the display panel; a side frame located between the display panel and the composite material plate, fixed to the composite material plate, and 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 receiving portion in which the front skin and the core are compressed to form a step in which the front skin is lowered; and further comprising a PCB plate located at the rear of the composite material plate, coupled to the rear surface of the composite material plate, and covering the first cable hole, wherein the PCB plate comprises a second cable hole facing the first cable hole, and the size of the second cable hole is smaller than the size of the first cable hole. Claim 4 In claim 3, the PCB plate comprises: a hole side part forming the perimeter of the second cable hole, and the hole side part comprises: a first side part forming an upper edge; a second side part forming a lower edge facing the upper edge; a third side part connecting the first side part and the second side part; and a fourth side part facing the third side part and connecting the first side part and the second side part, and at least one of the first side part, the second side part, the third side part and the fourth side part is exposed on the front surface of the composite material plate by the first cable hole. Claim 5 A display panel; a composite material plate located at the rear of the display panel; a side frame located between the display panel and the composite material plate, fixed to the composite material plate, and to which the display panel is coupled; and a PCB plate located at the rear of the composite material plate and coupled to the rear surface of the composite material plate, 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 receiving portion in which the front skin and the core are compressed to form a step such that the front skin is lowered. A display device comprising: a first cable hole formed by penetrating the front skin and the rear skin and located adjacent to the receiving portion; a PCB plate comprising a second cable hole covering the first cable hole and facing the first cable hole, wherein the size of the second cable hole is smaller than the size of the first cable hole; and the PCB plate comprising: a hole side part forming the perimeter of the second cable hole, wherein the hole side part comprises: a rear part connected to the PCB plate; and a front part extending from the rear part while being folded or bent. Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 A display panel; a composite material plate located at the rear of the display panel; a side frame located between the display panel and the composite material plate, fixed to the composite material plate, and to which the display panel is coupled; and a PCB plate located at the rear of the composite material plate and coupled to the rear surface of the composite material plate, 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 receiving portion in which the front skin and the core are compressed to form a step in which the front skin is lowered; and a first cable hole located adjacent to the receiving portion and formed penetrating the front skin and the rear skin, wherein the display panel comprises: a source signal substrate located in the receiving portion between the display panel and the composite material plate; and a flexible flat cable connected to the source signal substrate and extending from the front of the composite material plate to the rear of the composite material plate through the first cable hole. A display device further comprising a flexible cable connecting the source signal substrate and the display panel, wherein the flexible cable is positioned between the display panel and the composite material plate, and the PCB plate includes a first cable hole covering and a second cable hole facing the first cable hole, and the flexible flat cable extends to the rear of the PCB plate through the first cable hole and the second cable hole, and the PCB plate includes: a hole side part forming the perimeter of the second cable hole, and the hole side part includes: a rear part connected to the PCB plate; and a front part extending from the rear part while being folded or bent. Claim 10 In claim 9, the size of the second cable hole is smaller than the size of the first cable hole in the display device. Claim 11 In claim 9, the hole side part is a display device exposed to the front of the composite material plate through the first cable hole.

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