Patent Publication Number: US-11038295-B2

Title: Display device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 16/255,297, filed on Jan. 23, 2019, currently pending, which is a continuation of U.S. patent application Ser. No. 15/827,820, now U.S. Pat. No. 10,211,556, filed on Nov. 30, 2017, which is a continuation of U.S. patent application Ser. No. 15/179,372, now U.S. Pat. No. 9,837,739, filed on Jun. 10, 2016, which claims the benefit of earlier filing date and right of priority to Korean Patent Application Nos. 10-2015-0158785, filed on Nov. 12, 2015, and 10-2015-0180078, filed on Dec. 16, 2015, the contents of which are hereby incorporated by reference in their entirety. 
    
    
     BACKGROUND OF THE DISCLOSURE 
     Field of the Disclosure 
     The preset invention relates to a display device and, more particularly, to a display device configured in such a manner that a flat cable can be easily coupled to/separated from an FPC cable since a cable cover for shielding the flat cable is not present. 
     Background of the Disclosure 
     With the development of information-oriented society, demand for display devices is increasing. To meet such demand, various types of display devices such as an LCD (Liquid Crystal Display), PDP (Plasma Display Panel), ELD (electroluminescent display) and VFD (Vacuum Fluorescent Display) have recently been researched and used. 
     From among such display devices, display devices using an organic light emitting diode (OLED) can be implemented as ultra-thin displays since the display devices have excellent luminance and viewing angle characteristics and do not require a backlight unit, compared to LCDs. 
     SUMMARY OF THE DISCLOSURE 
     According to one aspect of the present invention, there is provided a display device, including: a body; a housing separated from the body and configured to transmit/receive signals to/from the body; and a cable coupling the housing and the body, wherein the cable includes a flat cable located in at least part of the cable and having a flat shape, and around cable located in at least another part of the cable and having a round shape. 
     The flat cable may include a plurality of layers. 
     The flat cable may have one end coupled to the body, and the round cable may have one end coupled to the housing. 
     The display device may further include an FPC cable coupling the other end of the flat cable and the other end of the round cable. 
     At least one of the plurality of layers may include a signal terminal through which signals are transferred, and at least another one of the plurality of layers may include a power terminal through which power is supplied. 
     A layer between the signal terminal and the power terminal may include a ground terminal. 
     The length of a protruding end of at least one of the plurality of layers may differ from that of at least another one of the plurality of layers. 
     The uppermost layer, from among the plurality of layers, may have a longest protruding length and layers under the uppermost layer may have identical or shorter protruding lengths with increasing distance from the uppermost layer. 
     The FPC cable may include a plurality of layers corresponding to the plurality of layers of the flat cable. 
     Protruding ends of the layers of the FPC cable may have different lengths. 
     The lowermost layer, from among the plurality of layers of the FPC cable, may have a longest protruding length and layers above the lowermost layer may have identical or shorter protruding lengths with increasing distance from the lowermost layer. 
     The FPC cable may include one or more FPC terminals disposed on the upper surface of the end of each layer, wherein the FPC terminals are arranged at intervals. 
     The FPC cable may include FPC terminals disposed on the upper surface of the end of each layer and the front side of each layer. 
     The FPC terminals disposed on the upper surface of the end of each layer and the FPC terminals disposed on the front side of each layer may be alternately arranged in a zigzag form. 
     One of at least one side of the FPC cable and a side connected to the at least one side may have a stepped form. 
     The FPC cable may include an FPC terminal disposed at the end thereof, and the FPC terminal may be provided to one of at least one side of the FPC cable and a side connected to the at least one side. 
     At least one side of the FPC cable and both sides connected to the one side may have a stepped form. 
     The FPC cable may include an FPC terminal disposed at the end thereof, and the FPC terminal may be provided to at least one side of the FPC cable and both sides connected to the at least one side. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings: 
         FIGS. 1 to 10  illustrate a configuration of a display device according to the present invention; 
         FIGS. 11 to 18  illustrate a connecting part of a display device body and a housing according to an embodiment of the present invention; 
         FIGS. 19, 20 and 21  illustrate a display device according to an embodiment of the present invention; and 
         FIGS. 22 to 39  illustrate a display device according to another embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Reference will now be made in detail to embodiments of the invention examples of which are illustrated in the accompanying drawings. Since the present invention may be modified in various ways and may have various forms, specific embodiments are illustrated in the drawings and are described in detail in the present specification. However, it should be understood that the present invention is not limited to specific disclosed embodiments, but includes all modifications, equivalents and substitutes within the spirit and technical scope of the present invention. 
     The terms “first”, “second”, etc. maybe used to describe various components, but the components are not limited by such terms. The terms are used only for the purpose of distinguishing one component from other components. For example, a first component may be designated as a second component without departing from the scope of the present invention. In the same manner, the second component may be designated as the first component. 
     The term “and/or” encompasses both combinations of the plurality of related items disclosed and any item from among the plurality of related items disclosed. 
     When an arbitrary component is described as being “connected to” or “linked to” another component, this should be understood to mean that additional component(s) may exist therebetween, although the arbitrary component may be directly connected to, or linked to, the second component. In contrast, when an arbitrary component is described as being “directly connected to” or “directly linked to” another component, this should be understood to mean that no component exists therebetween. 
     The terms used in the present application are used to describe only specific embodiments or examples, and are not intended to limit the present invention. A singular expression can include a plural expression as long as it does not have an apparently different meaning in context. 
     In the present application, the terms “include” and “have” should be understood to designate that illustrated features, numbers, steps, operations, components, parts or combinations thereof exist and not to preclude the existence of one or more different features, numbers, steps, operations, components, parts or combinations thereof, or the possibility of the addition thereof. 
     Unless otherwise specified, all of the terms which are used herein, including the technical or scientific terms, have the same meaning as generally understood by a person having ordinary knowledge in the art to which the present invention pertains. The terms defined in a generally used dictionary must be understood to have meanings identical to those used in the context of a related art, and are not to be construed to have ideal or excessively formal meanings unless they are obviously specified in the present application. 
     The following exemplary embodiments of the present invention are provided to those skilled in the art in order to describe the present invention more completely. Accordingly, shapes and sizes of elements shown in the drawings may be exaggerated for clarity. 
     While an organic light emitting display (OLED) is exemplified as a display panel in the following description, a display panel applicable to the present invention is not limited to the OLED panel and may be an LCD, PDP or FED (Field Emission Display) panel. 
       FIGS. 1 to 10  illustrate a configuration of a display device according to the present invention. 
     Referring to  FIG. 1 , a display panel  100  may include a first long side LS 1 , a second long side LS 2 , a first short side SS 1  adjoining the first long side LS 1  and the second long side LS 2 , and a second short side SS 2  opposite the first short side SS 1 . 
     The area of the first short side SS 1  may be referred to as a first side area, the area of the second short side SS 2  may be referred to as a second side area, the area of the first long side LS 1  may be referred to as a third side area adjoining the first side area and the second side area and located between the first side area and the second side area, and the area of the second long side LS 2  may be referred to as a fourth side area opposite the third side area, which adjoins the first side area and the second side area and is located between the first side area and the second side area. 
     While the length of the first and second long sides LS 1  and LS 2  is greater than the length of the first and second short sides SS 1  and SS 2  in the figure, the length of the first and second long sides LS 1  and LS 2  may be approximately equal to the length of the first and second short sides SS 1  and SS 2 . 
     In the following description, a first direction DR 1  may be parallel with the long sides LS 1  and LS 2  of the display panel  100  and a second direction DR 2  may be parallel with the short sides SS 1  and SS 2  of the display panel  100 . 
     A third direction DR 3  may be perpendicular to the first direction DR 1  and/or the second direction DR 2 . 
     The first direction DR 1  and the second direction DR 2  may be commonly referred to as a horizontal direction. 
     The third direction DR 3  may be referred to as a vertical direction. 
     Referring to  FIG. 2 , a display device body  10  according to the present invention may include the display panel  100 , a module cover  200  and a PCB cover  400 . 
     The display panel  100  is provided to the front side of the body  10  and displays images. The display panel  100  may divide an image into a plurality of pixels and display the image by controlling color, brightness and saturation per pixel. 
     The display panel  100  may have a rectangular shape. However, the shape of the display panel  100  is not limited thereto and the display panel  100  may have corners with a predetermined curvature. The display panel  100  may be an OLED panel. However, the display panel  100  is not limited thereto and may be an LCD panel. 
     The module cover  200  may be provided to the rear side of the display panel  100 . The module cover  200  may be directly attached to the display panel  100 . The module cover  200  can support the rear side of the display panel  100 . That is, the module cover  200  can reinforce the display panel  100 . Accordingly, the module cover  200  may be formed of a material that is light and has high hardness. For example, the module cover  200  can be formed of aluminum. 
     A source PCB  172  may be attached to the lower part of the module cover  200 . The module cover  200  may have a hole formed in a region where the source PCB  172  is disposed. When an excessively large number of through-holes or holes are formed in the module cover  200 , the module cover  200  may be cracked or the hardness thereof may decrease. Accordingly, it is desirable that the module cover  200  have a fewer through-holes or holes. 
     The source PCB  172  may have signal lines mounted thereon. The signal lines transfer digital video data and timing control signals transmitted from a timing controller board. The source PCB  172  can be connected to the display panel  100  through a source COF (Chip on Film). 
     The source COF can be electrically connected to the source PCB  172  and data pads of the display panel  100 . The source COF may have a data integrated circuit mounted thereon. 
     The PCB cover  400  may be provided to the region where the source PCB  172  is disposed. The PCB cover  400  can prevent the source PCB  172  from being exposed. The PCB cover  400  may be opaque such that the source PCB  172  is not exposed. 
     The PCB cover  400  may be formed of an insulating material such that interference from other electronic devices is not applied to the source PCB  172 . For example, the PCB cover  400  can be formed of a plastic material. Accordingly, the PCB cover  400  can protect the source PCB  172  from leakage current. 
     The display device body according to the present invention can support the display panel  100  only with the module cover  200 . That is, the body  20  may not include a cover other than the module cover  200 . Accordingly, a user can feel that the body  10  is thin and concentrate on the display screen. 
     Referring to  FIG. 3 , the display panel  100  may include a transparent substrate  110 , an upper electrode  120 , an organic emission layer  130  and a lower electrode  140 . The transparent substrate  110 , the upper electrode  120 , the organic emission layer  130  and the lower electrode  140  may be sequentially formed. 
     The transparent substrate  110  and the upper electrode  120  may contain a transparent material. The lower electrode  140  may contain a material that is not transparent. However, the material of the lower electrode  140  is not limited thereto and may include a transparent material (e.g. ITO). In this case, light can be emitted from one side of the lower electrode  140 . 
     When a voltage is applied to the upper and lower electrodes  120  and  140 , light emitted from the organic emission layer  130  can be projected to the outside through the upper electrode  120  and the transparent substrate  110 . Here, to project light emitted from the lower electrode  140  to the front of the display panel  100 , a light shielding plate may be provided behind the lower electrode  140 . 
     The display device according to the present invention may be an OLED display. Accordingly, the display device  100  does not require an additional light source and the volume and weight of the display device  100  can be reduced. In addition, the OLED display has a response speed  1000  times that of an LCD, afterimage is not generated when the OLED display displays images. 
     Referring to  FIG. 4 , in the display device according to the present invention, the back cover  200  can be attached to the display panel  100  through an adhesive sheet  350 . The adhesive sheet  350  may include a double-sided tape. 
     The adhesive sheet  350  may have a thickness . Accordingly, particles or dust may enter the space between the display panel  100  and the back cover  200 . To prevent this, at least one side of the adhesive sheet  350  may be sealed using a sealing member  183 , as shown in  FIG. 4( a ) . The sealing member  183  can simultaneously shield at least one side of the adhesive sheet  350  and at least one side of the display panel  100 . 
     Alternatively, a frame  187  may be provided to at least one side of the adhesive sheet  350 , as shown in  FIG. 4( b ) . The frame  187  comes into contact with at least one side of the adhesive sheet  350  and one end thereof maybe bent to extend to the display panel  100 . Accordingly, the frame  187  can also shield at least one side of the display panel  100 . 
     Alternatively, a middle cabinet  193  may be provided between the display panel  100  and the back cover  200 , as shown in  FIG. 4( c ) . The middle cabinet  193  can guide a position to which the display panel  100  is coupled. The middle cabinet  193  may have a flange  193   a  inserted between the display panel  100  and the back cover  200 . The body of the middle cabinet  193  can simultaneously shield at least one side of the display panel  100  and at least one side of the back cover  200 . 
     The flange  193   a  of the middle cabinet  193  may be separated from the adhesive tape  350 . Accordingly, the adhesive sheet  350  need not be applied to the entire area of the display panel  100 , and thus the quantity of the adhesive sheet  350  can be reduced when the display device is manufactured. 
     Alternatively, the edge of the back cover  200  may be bent to the display panel  100 , as shown in  FIG. 4( d ) . Since the edge of the back cover  200  is bent, at least one side of the adhesive sheet  350  can be shielded. 
     In this case, particles can be prevented from entering between the display panel  100  and the back cover  200 . Accordingly, a display device manufacturing process can be simplified and manufacturing costs can be decreased. In addition, the edge of the back cover  200  can be separated from the adhesive sheet  350 . Accordingly, the adhesive sheet  350  need not be applied to the entire area of the display panel  100 , and thus the quantity of the adhesive sheet  350  can be reduced when the display device is manufactured. 
     In the following embodiments, structures provided to at least one side of the adhesive tape  350  are omitted for convenience of description. The structures provided to at least one side of the adhesive tape  350  are applicable to other embodiments. 
     Referring to  FIG. 5 , the display device according to the present invention may include a housing  500  electrically connected to the body  10 . 
     The housing  500  can transmit at least one signal to the body  10 . The housing  500  can shield components that drive the display device. For example, the housing  500  can shield at least one printed circuit board (PCB). A combination structure and a combination method of the at least one PCB will be described in detail. 
     The housing  500  may be separated from the body  10  instead of coming into contact with the body  10 . That is, the housing  500  may not be located in a region corresponding to a display screen. Accordingly, the housing  500  may not disturb the user when the user views the display screen. 
     For example, the housing  500  can be coupled to the body  10  through a plurality of flat cables  161 , as shown in  FIG. 5( a ) . The flat cables  161  can include a plurality of signal connection terminal pins and at least one ground terminal pin for coupling the housing  500  to the body  10 . The flat cables  161  are cheaper than other cables. 
     Alternatively, the housing  500  may be coupled to the body  10  through a round cable  163 , as shown in  FIG. 5( b ) . That is, electrical signals transmitted through the plurality of flat cables  161  can be transmitted through one round cable  163 . Since the housing  500  is coupled to the body through one round cable  163  instead of a plurality of cables, the appearance of the display device becomes neat. 
     Alternatively, the housing  500  and the body  10  may exchange electrical signals wirelessly, as shown in  FIG. 5( c ) . In this case, the appearance of the display device can become neater than when the housing  500  is coupled to the body through the flat cables  161  or the round cable  163 . 
     In the display device according to the present invention, the body  10  and the housing  500  may be separated from each other. Accordingly, the user can view the display screen without being disturbed by the housing and a display device having a thinner body  10  can be implemented. 
     Referring to  FIG. 6 , the display device according to the present invention can exchange electrical signals with the housing  500  through an electrical wire  816  that penetrates an attached panel  700  to which the body  10  is attached. In this case, one side of a source PCB of the body  10  can be connected to the electrical wire  816 . 
     The electrical wire  816  can penetrate the attached panel  700  to which the body  10  is attached to be inserted thereinto. One side of the electrical wire  816  can be connected to the source PCB and the other side thereof can be connected to the round cable  163 . The electrical wire  816  may be provided inside of the panel  700  and thus the user cannot see the electrical wire  816 . 
     In the display device according to the present invention, the body  10  and the housing  500  can be connected through the electrical wire  816  inserted into the inside of the panel  700  to which the body  10  is attached. Accordingly, the housing  500  and the body  10  may appear not to be directly connected. Therefore, the appearance of the display device looks neat and the user can concentrate on the display screen. 
     Referring to  FIG. 7 , in the display device according to the present invention, a PCB cover may not be provided to the body  10 . Accordingly, the body  10  may require a space where a source PCB  172  can be located. 
     For example, a portion of the back cover  200 , which corresponds to the source PCB  172 , may be recessed, as shown in  FIG. 7( a ) . In this case, the portion of the back cover  200 , which corresponds to the source PCB  172 , may be thinner than the other portion. Since the back cover  200  does not have a uniform thickness, the hardness of the back cover can be improved. 
     Since the portion of the back cover  200 , which corresponds to the source PCB  172 , is thinner, the source PCB  172  can be disposed on the rear side of the display panel  100  irrespective of the thickness of the adhesive sheet  350 . 
     Alternatively, the back cover  200  may have a uniform thickness, as shown in  FIG. 7( b ) . That is, the back cover  200  may not have a recessed portion. In this case, the thickness of the adhesive sheet  350  interposed between the display panel  100  and the back cover  200  in a third direction may be greater than the thickness of the source PCB  172  in the third direction. 
     Since the back cover  200  has a uniform thickness, a manufacturing process of the back cover  200  can be simplified and manufacturing costs can be reduced. 
     In the display device according to the present invention, the source PCB  172  may be located between the display panel  100  and the back cover  200 . Accordingly, the back cover  200  may not require a through-hole or a hole formed therein. Therefore, the back cover  200  is not cracked and hardness thereof can be enhanced. 
     Referring to  FIG. 8 , one or more PCBs may be located inside of the housing  500 . The PCBs may be located at intervals. 
     For example, the one or more PCBs may include main boards  109 . The main boards  109  can provide an interface for operating the display device. In addition, the main boards  109  can optimize the state of the display device by checking and managing operating states of components of the display device. 
     Alternatively, the one or more PCBs may include a power supply  107 . The power supply  107  can supply power to the display device. That is, the power supply  107  can supply power to the body. The power supply  107  can convert an AC frequency into a DC frequency. That is, the power supply can convert a low frequency into a high frequency so as to improve electrical efficiency. 
     Alternatively, the one or more PCBs may include a timing controller board  105 . The timing controller board  105  may transfer a signal input thereto to the display panel  100 . That is, the timing controller board  105  can transfer timing signals CLK, LOAD and SPi for controlling the source PCB and video signals R, G and B to the source PCB. In addition, the timing controller board  105  can control images. The timing controller board  105  can be coupled to the source PCB through one of a flat cable, a round cable and wireless communication. 
     As shown in  FIG. 8( a ) , the main board  109  may be disposed at the center and right side of the housing  500  and separated from each other, and the power supply  107  may be disposed opposite the main board  109  located at the right side of the housing  500  in the direction of the long side of the housing  500  on the basis of the center of the housing  500 . 
     The timing controller board  105  may be disposed on the main board  109  and the power supply  107 . Since the timing controller board  105  is disposed on the main board  109  and the power supply  107 , the inside space of the housing  500  can be saved. 
     A T-con shield (not shown) may be attached to a region where the timing controller board  105  is mounted in order to block electromagnetic waves emitted from the power supply  107  and the main board  109 . That is, the timing controller board  105  can be disposed on the T-con shield instead of being disposed on the power supply  107  and the main board  109 . Accordingly, the power supply  107  and the main board  109  and the timing controller board  105  may not interfere with each other. In addition, the T-con shield can protect the timing controller board  105  from impact applied thereto. 
     The timing controller board  105  may be superposed on the power supply  107  and the main board  109  in the height direction of the housing  500 . Accordingly, the timing controller board  105  can be easily coupled to the power supply  107  and the main boards  109 . 
     Referring to  FIG. 8( b ) , one main board  109  may be mounted inside of the housing  500 . Specifically, the main board  109  may be disposed at one side of the housing  500  and the power supply  107  may be disposed opposite the main board  109  in the direction of the long side of the housing  500 . 
     The display device according to the present invention can save the internal space thereof since the timing controller board  105  is located on the power supply  107  and the main board  109 . Accordingly, the size of the housing  500  can be reduced and thus the aesthetics of the display device can be improved. 
     Referring to  FIG. 9 , the display device according to the present invention may include speakers  117  provided to both sides of the front of the housing  500 . The speakers  117  can output sound to the user. Accordingly, it is more efficient to dispose the speakers  117  to the front side of the housing  500 . 
     As shown in  FIG. 9( a ) , the speakers  117  may be mounted on the front side of the housing and separated from at least one PCB mounted inside of the housing  500 . Alternatively, the speakers  117  may be disposed outside of the housing  500  and separated from the housing  500 , as shown in  FIG. 9( b ) . Since the speakers  117  are located outside of the housing  500 , sound output from the speakers  117  can be well transferred to the user. 
     In the display device according to the present invention, the speakers  117  maybe disposed at the front side or both sides of the housing  500 . Accordingly, sound of the display device, output through the speakers  117 , can be well transferred to the user. 
     Referring to  FIG. 10 , a flexible printed circuit (FPC) board  174  may be disposed on the source PCB  172 . The FPC board  174  may be located on the rear side of the display panel  100 . The FPC board  174  can be coupled to the source PCB  172  through a connector  157 . The connector  157 , which is located above the source PCB  172 , can connect the source PCB  172  and the lower end of the FPC board  174 . 
     The source PCB  172  can deliver electrical signals to the housing through a flat cable  161 . The flat cable  161  may include a plurality of signal connection terminal pins and at least one ground terminal pin for connecting the source PCB  172  and the housing. The flat cable  161  is cheaper than other cables. 
     As shown in  FIG. 10( a ) , the FPC board  174  may be disposed at the center of the display panel  100 . The FPC board  174  can be coupled to the flat cable  161  through the connector  157  located therein. Since the FPC board  174  is disposed at the center of the display panel  100 , the flat cable  161  coupled to the FPC board  174  can also be located at the center of the display panel  100 . 
     Various drive ICs may be mounted on the FPC board  174 . The drive ICs can transmit and receive data between the source PCB and the housing. For example, the drive ICs can include a SERDES (serializer/deserializer) IC. The SERDES IC can convert serial data/parallel data into parallel data/serial data. Accordingly, the SERDES IC can rapidly transmit signals. 
     Referring to  FIG. 10( b ) , the FPC board  174  may be disposed at one side of the display panel  100 . Accordingly, the flat cable  161  coupled to the FPC board  174  can also be located at one side of the display panel  100 . Since the flat cable  161  is located at one side of the display panel  100 , the user can view the display screen without being disturbed by the flat cable  161 . 
     In the present embodiment, one side of the FPC board  174  may be projected to the outside of the display panel  100 . That is, one side of the FPC board  174  is exposed. Accordingly, the flat cable can be easily coupled to/separated from the FPC board  174  through the projected portion of the FPC board  174 . 
     In the present embodiment, drive ICs may be mounted on the source PCB  172 . Accordingly, the space of the display panel can be saved since drive ICs are not mounted on the FPC board  174 . 
     The display device according to the present invention can be connected to the flat cable  161  through the FPC board  174 . Accordingly, a larger quantity of data can be rapidly transmitted and received through the drive ICs mounted on the FPC board  174 . 
       FIGS. 11 to 18  illustrate a connecting part of the display device body and the housing according to an embodiment of the present invention. 
     Referring to  FIG. 11 , the body  10  and the housing  500  may be coupled to each other through a flat cable  161  and a round cable  163 . That is, data can be transmitted between the body  10  and the housing  500  through the flat cable  161  and the round cable  163 . 
     The round cable  163  may be very thick and large. Accordingly, if the round cable  163  is directly connected to the body  10  attached to the panel for attaching the display device body  10  to a wall, the user may be disturbed by the round cable  163  when the user views the display screen. In addition, the display device may appear to not to be tightly coupled to the wall. 
     The flat cable  161  is very thin and thus may not disturb the user who is viewing the display screen when connected to the body  10 . In addition, the display device can appear to be tightly coupled to the wall. However, the flat cable  161  may disturb the housing  500  when the housing  500  is moved since the flat cable  161  is thin and thus sags. 
     In addition, the flat cable  161  may be difficult to move horizontally although it can move forward and backward. Accordingly, if the body  10  and the housing  500  are connected through the flat cable  161  only, it may be difficult to freely move the housing  500 . 
     The round cable  163  can be freely moved in every direction. Accordingly, the housing  500  can be freely moved when the body  10  and the housing  500  are connected through the round cable  163 . 
     Therefore, the body  10  and the housing  500  can be connected through the flat cable  161  and the round cable  163  in such a manner that the flat cable  161  is coupled to the body  10  and the round cable  163  is coupled to the housing  500 . 
     An FPC cable  181  may be coupled between the flat cable  161  and the round cable  163  so as to connect the flat cable  161  and the round cable  163 . The FPC cable  181  can match the positions of a signal terminal and a power terminal of the flat cable  161  to the positions of a signal terminal and a power terminal of the round cable  163 . 
     In the display device according to the present invention, signals can be transmitted using the flat cable  161  coupled to the body  10  and the round cable  163  coupled to the housing  500 . Accordingly, the body  10  can appear to be tightly coupled to the panel to which the body  10  is attached. In addition, the housing  500  can be moved without being disturbed by the cables. 
     Referring to  FIG. 12 , an inserted part of the FPC cable  181  may have a stepped form. That is, the end of the inserted part of the FPC cable  181  is formed in stepped layers which have different protruding lengths. That is, the protruding length of a lower layer may be longer than that of an upper layer. For example, the protruding length of the lowest layer at the end of the FPC cable  181  is longest and protruding lengths of layers decrease with increasing distance from the highest layer. The FPC cable  181  can contact the flat cable  161  inserted corresponding to the respective layers. The FPC cable  181  can transfer signals transmitted to the respective layers to the round cable  163 . 
     The width of the round cable  163  in a first direction may be narrower than the width of the flat cable  161  in the first direction. Accordingly, the width of the FPC cable  181  may decrease as the FPC cable  181  approaches the round cable  163 . The flat cable  161  can be inserted into the inside of the FPC cable  181  and engage therewith. Accordingly, the end of the flat cable  161  may have a reversed stepped form. That is, the flat cable  161  is composed of multiple layers which have different protruding lengths. 
     A cable cover  177  may be disposed on the FPC cable  181  and separated therefrom. The cable cover  177  can cover the flat cable  161  when the flat cable  161  is inserted into the FPC cable. The cable cover  177  can guide an insertion position of the flat cable  161  such that the flat cable  161  can be correctly inserted into the FPC cable  181 . That is, the flat cable  161  can engage between the cable cover  177  and the FPC cable  181 . 
     Referring to  FIG. 13 , the FPC cable  181  may include FPC terminals  217  provided to the upper surface of the end of each layer. The FPC terminals  217  may be formed of a metal material. The FPC terminals  217  can function as doorways through which transmitted/received data pass. The FPC terminals  217  can be arranged on the upper surface of the end of each layer at predetermined intervals. Accordingly, data transmitted through the respective FPC terminals  217  may not interfere with each other. 
     The layers of the FPC cable  181  may transfer different pieces of data. For example, one layer of the FPC cable  181  can transfer a signal and another layer thereof can transfer power. Since different pieces of data are transmitted through different layers of the FPC cable  181 , interference between data can be prevented. 
     Referring to  FIG. 14 , the flat cable  161  may be composed of multiple layers. As shown in  FIG. 14( a ) , the flat cable  161  may include a first power terminal  274 , a second power terminal  276 , a signal terminal  278  and a ground terminal  251  between data transfer layers. 
     Different power voltages can be respectively transferred through the first power terminal  274  and the second power terminal  276 . For example, 12V can be transferred through the first power terminal  274  and 24V can be transferred through the second power terminal  276 . The signal terminal  278  can transfer signals. The signal terminal  278  can transfer signals such that images corresponding to the signals can be displayed. 
     The ground terminal  251  may be interposed between the signal terminal  278  and the first and second power terminals  274  and  276 . The ground terminal  251  can shield external noise and block interference between a signal and power. 
     While  FIG. 14  shows the signal terminal  278  and the first and second power terminals  274  and  276 , the present invention is not limited thereto and the signal terminal  278  and the first and second power terminals  274  and  276  may be further segmented. For example, a power terminal can be divided into parts for supplying 3.5V, 12V and 24V. 
     Referring to  FIG. 14( b ) , the layers of the flat cable  161  at one end thereof may have different protruding lengths to engage with the FPC cable having a stepped form at the end thereof. The uppermost layer of the flat cable  161  may have the longest protruding length and the flat cable  161  may have a shorter protruding length with increasing distance to the uppermost layer. For example, the signal terminal  278  located at the top layer of the flat cable  161  can protrude more than the first and second power terminals  274  and  276  and the second power terminal  276  can protrude more than the first power terminal  274 . That is, the signal terminal  278  and the first and second power terminals  274  and  276  may have a reversed stepped form. 
     Each of the signal terminal  278  and the first and second power terminals  274  and  276  may have a flat cable terminal  231  provided on the lower surface of one end thereof. The flat cable terminal  231  can transfer data from the signal terminal  278  or the first and second power terminals  274  and  276  to other parts. The flat cable terminal  231  may not contact other layers in such a manner that the flat cable terminal  231  is disposed at a part protruding from the layer under the layer on which the flat cable terminal  231  is located. The flat cable terminal  231  may include a metal material. The flat cable terminal  231  can transfer power or signals to the FPC terminals by contacting the FPC terminals. 
     Referring to  FIG. 15 , not only one side of the inserted part of the FPC cable  181  but also a side connected to the side may have a stepped form. For example, the inserted part of the FPC cable  181  may include a first side facing the front and a second side connected to one end of the first side and perpendicular to the first side, and the first and second sides may have a stepped form. 
     The FPC terminals  217  may be disposed on upper surfaces of the ends of the layers at the first side and upper surfaces of the ends of the layers at the second side. The FPC terminals  217  may be located at predetermined intervals at the first and second sides. 
     Since the FPC terminals  217  are located at the second side as well as the first side, a larger number of FPC terminals  217  can be provided to each layer of the FPC cable  181 . Accordingly, a larger amount of data can be transferred while maintaining the density of FPC terminals  217  without increasing the probability of short-circuiting between neighboring FPC terminals  217 . In addition, the thickness of the FPC cable  181  can be reduced by decreasing the number of layers thereof. 
     Referring to  FIG. 16 , not only one side of the inserted part of the FPC cable  181  but also one of sides connected to the side may have a stepped form, as shown in  FIG. 16( a ) . For example, the inserted part of the FPC cable  181  may include the first side and a third side facing the second side and connected to one end of the first side, and the third side may have a stepped form. 
     The FPC terminals  217  may be disposed on the upper surfaces of the ends of the layers at the first side and upper surfaces of the ends of the layers at the third side. The FPC terminals  217  may be located at predetermined intervals at the first and second sides. 
     Referring to  FIG. 16( b ) , not only one side of the inserted part of the FPC cable  181  but also both sides connected to the side may have a stepped form. That is, the inserted part of the FPC cable  181  may include the first side and second and third sides connected to both ends of the first side, and the second and third sides may have a stepped form. 
     The FPC terminals  217  may be disposed on the upper surfaces of the ends of the layers at the first, second and third sides. The FPC terminals  217  may be located at predetermined intervals at the first, second and second sides. 
     Since the FPC terminals  217  are located at the first, second and third sides, a larger number of FPC terminals  217  can be provided to each layer of the FPC cable  181 . Accordingly, a larger amount of data can be transferred while maintaining the density of FPC terminals  217  without increasing the probability of short-circuiting between neighboring FPC terminals  217 . In addition, the thickness of the FPC cable  181  can be reduced by decreasing the number of layers thereof. 
     Referring to  FIG. 17 , the FPC terminals  217  maybe disposed on the upper surfaces and front sides of the layers of the FPC cable  181 , as shown in  FIG. 17( a ) . The FPC terminals  217  located on the upper surfaces of the layers of the FPC cable  181  and the FPC terminals  217  located on the front sides of the layers of the FPC cable  181  may be alternatively disposed in a zigzag form. Accordingly, wires connected to the FPC terminals  217  can be extended in a straight line without overlapping. 
     The FPC terminals  217  can be disposed not only on the upper surfaces of the layers of the FPC cable  181  but also on the front sides thereof. Accordingly, a larger amount of data can be transferred while maintaining the density of FPC terminals  217  without increasing the probability of short-circuiting between neighboring FPC terminals  217 . In addition, the thickness of the FPC cable  181  can be reduced by decreasing the number of layers thereof. 
     Referring to  FIG. 17( b ) , the FPC cables  181  maybe disposed on the front sides of the layers of the FPC cable  181 . Since the FPC terminals  217  are disposed only on the front sides of the layers of the FPC cable  181 , the FPC terminals  217  can be inserted into the flat cable without collision and come into contact with the flat cable after complete insertion. Accordingly, the FPC terminals  217  are not damaged even when connection and separation between the FPC cable and the flat cable are repeated. 
     Referring to  FIG. 18 , in a conventional display device, the signal terminal  278  and the first and second power terminals  274  and  276  are located inside of the flat cable  161 , as shown in  FIG. 18( a ) . The signal terminal  278  is located at the center of the flat cable  161  and the first and second power terminals  274  and  276  are located at both sides of the signal terminal  278 . 
     Different levels of power are supplied through the first power terminal  274  and the second power terminal  276 . The signal terminal  278  can transfer signals. The signal terminal  278  can transfer a signal such that an image corresponding to the signal can be displayed. 
     In the conventional flat cable  161 , the first and second power terminals  274  and  276  and the signal terminal  278  are located on one layer. That is, the first and second power terminals  274  and  276  and the signal terminal  278  can be located on the same plane. 
     Referring to  FIG. 18( b ) , the display device according to the present invention can be configured in such a manner that the signal terminal  278  and the first and second power terminals  274  and  276  are arranged in multiple layers inside of the flat cable  161 . Accordingly, the width FFW 2  of the flat cable  161  according to the present invention can be less than the width FFW 1  of the conventional flat cable  161 . For example, the signal terminal  278  can be disposed at the top level and the second power terminal  276  and the first power terminal can be sequentially located under the signal terminal  278 . 
     Therefore, interference between the signal terminal  278  and the first and second power terminals  274  and  276  of the flat cable  161  can be reduced. In addition, since the width FFW 2  of the flat cable  161  is narrow, wiring between signal terminals and power terminals of the flat cable  161  and a round cable can be easily switched. 
       FIGS. 19, 20 and 21  illustrate the display device according to an embodiment of the present invention. 
     Referring to  FIG. 19 , in the display device according to the present invention, the length of the flat cable  161 , which is exposed to the outside, can be freely adjusted. That is, the display device can be in one of a first state in which the exposed length of the flat cable  161  is relatively long and a second state in which the exposed length of the flat cable  161  is relatively short. 
     For example, the body  10  and the housing  500  can be separated from each other, as shown in  FIG. 19( a ) . In this case, the exposed length FD 1  of the flat cable  161  is relatively long. That is, the display device is in the first state. Since the body  10  and the housing  300  are separated from each other, the user can concentrate on displayed images. 
     Referring to  FIG. 19( b ) , the body  10  and the housing  500  can be closely arranged. That is, the display device is in the second state. In this case, the exposed length FD 2  of the flat cable  161  is short. Since the exposed length FD 2  of the flat cable  161  is short, the display device has a neat appearance. In addition, there is a low possibility that the flat cable  161  is twisted. 
     The exposed length of the flat cable  161  of the display device according to the present invention can be freely controlled. Accordingly, the body  10  and the housing  500  can be arranged as the user desires. 
     Referring to  FIG. 20 , the display device according to the present invention may be configured in such a manner that a support bar  326  on which the flat cable  161  hangs is disposed inside of the body  10 . The support body  326  can move inside of the body  10 . For example, the support bar  326  can move up and down as the display device switches from the first state to the second state. 
     As shown in  FIG. 20( a ) , the support bar  326  can be located closely above the FPC board  174  in the first state. Accordingly, the flat cable  161  in proximity to the FPC board  174  can hang on the support bar  326 . That is, the distance between the connector  157 , which connects the FPC board  174  and the flat cable  161 , and the support bar  326  can be relatively short. In this case, since a relatively short portion of the flat cable  161  hangs on the support bar  326 , the exposed length of the flat cable  161  can be relatively long. 
     Referring to  FIG. 20( b ) , the support bar  326  can be located a long distance from the FPC board  174  in the second state. That is, the support bar  326  can be located higher in the second state than in the first state. Accordingly, the distance between the connector  157 , which connects the FPC board  174  and the flat cable  161 , and the support bar  326  can be relatively long. In this case, since a relatively long portion of the flat cable  161  hangs on the support bar  326 , the exposed length of the flat cable  161  can be relatively short. 
     According to the present invention, the exposed length of the flat cable  161  can be adjusted by controlling the support bar  326  disposed inside of the display device. Accordingly, the appearance of the display device becomes neat since the extra portion of the flat cable  161  is located inside of the display device. In addition, the flat cable  161  is prevented from being twisted since the length of the flat cable  161  is adjusted by moving the support bar  326  up and down. 
     Referring to  FIG. 21( a ) , the display device according to the present invention may include a blind case  380  provided to the upper part of the body  10 . The blind case  380  may be a part where a driving unit for driving the support bar  326  is located. The blind case  380  can shield the driving unit of the support bar  326 . 
     A driving loop  371  may be disposed at one side of the blind case  380 . The driving loop  371  may hang on at least part of the driving unit located inside of the blind case  380 . The user can operate the driving loop  372  to move the support bar  326  up and down. 
     Referring to  FIG. 21( b ) , a first rotating plate  240  and a second rotating plate  260  may be located inside of the blind case  380 . A line  342  hanging on the support bar  326  may be wound around the first rotating plate  240  and the second rotating plate  260 . 
     The driving loop  371  may be wound around the second rotating plate  260 . The driving loop  371  may include a first driving loop  371   a  and a second driving loop  371   b  which are opposite each other on the basis of the second rotating plate  260 . The second rotating plate  260  can rotate in a first direction corresponding to clockwise when the first driving loop  371   a  is pulled and rotate in a second direction corresponding to counterclockwise when the second driving loop  371   b  is pulled. 
     When the support bar  326  is located at a lower part of the display device, the second rotating plate  260  can rotate in the second direction when the second driving loop  371   b  is pulled. As the second rotating plate  260  rotates in the second direction, a longer portion of the line  342  can be wound around the second rotating plate  260 . That is, one end of the line  342  can be moved upward. In this case, the support bar  326  can be moved along with the line  342  so as to reduce the exposed length of the flat cable. 
     When the first driving loop  371   a  is pulled with the support  326  moved upward, the second rotating plate  260  can rotate in the first direction. As the second rotating plate  260  rotates in the first direction, the line  342  is gradually released from the second rotating plate  260 . That is, one end of the line  342  is moved down. In this case, the support bar  326  can be moved down along with the line  342  so as to increase the exposed length of the flat cable. 
     That is, according to the present invention, the support bar  326  can be moved without being directly touched. Accordingly, the user can conveniently move the support bar  326  up and down. 
       FIGS. 22 to 29  illustrate a display device according to another embodiment of the present invention. 
     Referring to  FIG. 22 , the display device according to the present invention may not include the cable cover for covering the flat cable  161 . Accordingly, the upper surface of the flat cable  161  can be exposed to the outside. In addition, since the cable cover is not provided to the display device, the flat cable  161  can be easily coupled to/detached from the FPC cable  181 . 
     From a top view, the flat cable  161  is disposed at the part where the width of the FPC cable  181  widens, and thus the display device looks neater. 
     Referring to  FIG. 23 , the FPC cable  181  may include a first coupling part  413  disposed on the upper surface of the end of the uppermost layer thereof. The first coupling part  413  may be disposed more inwardly than the FPC terminals  217 . The first coupling part  413  may include a magnetic material. The first coupling part  413  may protrude upward. The first coupling part  413  may be extended in the first direction. However, the present invention is not limited thereto and a plurality of first coupling parts  413  may be arranged at intervals. 
     Since the first coupling part  413  is located on the upper surface of the FPC cable  181 , the FPC cable  181  and the flat cable can be coupled without a cable cover. 
     Referring to  FIG. 24 , the flat cable  161  may include a second coupling part  415  provided in front of the flat cable terminal  231 . The second coupling part  415  may protrude downward from the flat cable  161 . The second coupling part may include a magnetic material having polarity opposite the first coupling part. The second coupling part  415  may be extended in the first direction. However, the present invention is not limited thereto and a plurality of second coupling parts  415  may be arranged at intervals 
     Since the second coupling part  415  is provided to the flat cable  161 , the flat cable  161  and the FPC cable can be coupled without a cable cover. 
     Referring to  FIG. 25 , the FPC terminals  217  of the display device according to the present invention may protrude upward like the first coupling part  413 . The protruding portions of the FPC terminals  217  may be extended from metal lines mounted inside of the FPC cable  181 . However, the present invention is not limited thereto and the protruding portions of the FPC terminals  217  may be attached to the metal lines mounted inside of the FPC cable  181 . 
     Each protruding portion may include a support portion  241  and a contact portion  237 . The support part  241  may be a part that connects the contact part  237  of the FPC terminal  217  and the metal line mounted inside of the FPC cable  181 . The support portion  241  may be disposed only at one side of the contact portion  237 . That is, the part of the contact portion  237  except for the part corresponding to the support portion  241  can be separated from the metal line disposed inside of the FPC cable  181 . 
     The contact portion  237  may have a smaller diameter as the contact portion  237  goes to the top thereof. That is, the contact portion  237  can have a semispherical shape. The contact portion  237  may be a part contacting a terminal of the flat cable. Accordingly, the contact portion  237  can include a high conductivity material. 
     The top of the contact portion  237  may be higher than the top of the first coupling part  413  by a predetermined height LH. If the top of the contact portion  237  is lower than the top of the first coupling part  413 , the contact portion  237  may not contact a flat cable terminal due to the first coupling part  413  when the FPC cable  181  is coupled to the flat cable. 
     Referring to  FIG. 26 , according to the display device of the present invention, the flat cable  161  and the FPC cable  181  can be coupled through the first and second coupling parts  413  and  415 . The first and second coupling parts  413  and  415  can be strongly coupled to each other when the first coupling part  413  approximates the second coupling part  415  since the first and second coupling parts  413  and  415  have opposite polarities. 
     Each flat cable terminal  231  can include the support portion  241  and the contact portion  237  like the FPC terminal  217 . The support portion  241  and the contact portion  237  of the flat cable terminal  231  may be the same as the support portion  241  and the contact portion  237  of the FPC terminal  217  except for protruding direction. That is, the support portion  241  and the contact portion  237  of the flat cable terminal  231  may have an upside-down form of the support portion  241  and the contact portion  237  of the FPC terminal  217 . 
     When the first and second coupling parts  413  and  415  are coupled, the contact portion  237  of the flat cable terminal  231  and the contact portion  237  of the FPC terminal  217  can contact each other. When the first and second coupling parts  413  and  415  are coupled, the height of the top of the contact portion  237  may be the same as the height of the upper surface of the first coupling part  413 . That is, the distance between the contact portion  237  and the metal line mounted inside of the FPC cable  181 , which does not correspond to the support portion  241 , can be reduced. Since the part of the contact portion  237 , which does not correspond to the support part  241 , can be freely moved, the first and second coupling parts  413  and  415  can contact each other. 
     However, the present invention is not limited thereto and the first and second coupling parts  413  and  415  maybe coupled according to magnetic force while being separated from each other with the shape of the contact portions  237  thereof maintained. 
     According to the present invention, the heights of the tops of the FPC terminal  217  and the flat cable terminal  231  can be freely changed. Accordingly, contact of the FPC terminal  217  and the flat cable terminal  231  can be maintained. In addition, the flat cable  161  and the FPC cable  181  can be strongly coupled to each other. 
     Referring to  FIG. 27 , in the display device according to the present invention, the FPC cable  181  and the flat cable  161  may be coupled through one or more screws  321  as well as the first and second coupling parts  413  and  415 . The one or more screws  321  may be disposed at four corners of the region where the FPC cable  181  and the flat cable  161  overlap. However, the present invention is not limited thereto and the screws  321  may be provided to any region where the FPC cable  181  and the flat cable  161  overlap. 
     The FPC cable and the flat cable  161  can be strongly coupled since the screws  321  as well as the first and second coupling parts  413  and  415  are used. 
     Referring to  FIG. 28 , in the display device according to the present invention, the FPC cable  181  and the flat cable  161  may be coupled through one or more fixing holders  327  as well as the first and second coupling parts  413  and  415 . The one or more fixing holders  327  may be fastened to portions of sides adjacent to corners of the region where the FPC cable  181  and the flat cable  161  overlap. However, the present invention is not limited thereto and the fixing holders  327  may be provided to portions of sides of any region where the FPC cable  181  and the flat cable  161  overlap. 
     The fixing holders  327  can fasten the part at which the FPC cable  181  and the flat cable  161  overlap. The fixing holders  327  can maintain the state in which the lower surface of the FPC cable  181  and the upper surface of the flat cable  161  come into contact with each other. One end of each fixing holder  327  may come into contact with the lower surface of the FPC cable  181  and the other end thereof may come into contact with the upper surface of the flat cable  181 . 
     The FPC cable  161  and the flat cable  161  can be strongly coupled according to the fixing holders  327 , and thus non-contact between terminals of the flat cable  161  and the FPC cable  181  can be prevented. 
     Referring to  FIG. 29 , a plug  442  may be disposed at one end of the flat cable  161 . The plug  442  can be inserted into the body  10 . The width of the plug  442  in the first direction can increase with increasing distance to the end of the plug  442 . That is, signal terminals and power terminals disposed inside of the plug  442  can be spread wide. Accordingly, the plug  442  is thin and thus can be inserted into the body  10 . 
     The plug  442  inserted into the body  10  can be inserted into a slot  467 . The slot  467  may be mounted on the FPC board  174 . The slot  467  can guide a position into which the plug  442  is inserted. The slot  467  can transfer data delivered from the plug  442  to the FPC board  174 . 
     The plug  442  can be easily separated from/coupled to the slot  467  as necessary. Accordingly, the user can easily combine/separate the housing with/from the body  10 . In addition, when the housing is combined with the body  10 , the plug  10  is located inside of the body  10  and thus the appearance of the display device becomes clean. 
     The slot  467  may be located at the center of the body  10 , as shown in  FIG. 29( a ) . Alternatively, the slot  467  may be disposed at one side of the body  10 , as shown in  FIG. 29( b ) . In this case, the plug  442  and the flat cable  161  coupled to the slot  467  can also be located at one side of the body  10  and thus do not disturb the user when the user views displayed images. 
     Referring to  FIG. 30 , the slot  467  may include side slots  457   a  and a body slot  467   b . The side slots  467   a  may be extended from both ends of the body slot  467   b  in a direction perpendicular to the body slot  467   b.    
     The side slots  467   a  may include guide grooves  513  formed therein. The guide grooves  513  may be recesses formed at the inside centers of the side slots  467   a . The guide grooves  513  may be parts that guide insertion of the plug. 
     The body slot  467   b  may include a plurality of connector sockets  521  arranged therein. The plurality of connector sockets  521  may be arranged at intervals. The connector sockets  521  may be parts into which connector pins of the plug are inserted. The body slot  467   b  can function as a connector. That is, the body slot  467   b  can transfer data delivered through the connector sockets  521  to the FPC board. 
     The slot  467  can guide correct insertion of the plug through the guide grooves  153  provided to the side slots  467   a . Accordingly, the user can easily connect or separate the plug. In addition, the slot  467  can transfer data simultaneously with insertion of the plug since the connector sockets  521  are provided inside of the body slot  467   b . Accordingly, the user can transmit data of the housing to the body more conveniently. 
     Referring to  FIG. 31 , the plug  442  may include a plug body  541  and a plug connector  547 . The plug body  541  may have one end coupled to the flat cable  161 . The width of the plug body  541  in the first direction may increase with increasing distance from the side opposite the flat cable  161 . That is, the signal terminals and power terminals disposed inside of the plug body  541  can be spread wide. Accordingly, the thickness of the plug body  541  in the third direction can be reduced. 
     The plug connector  547  may be disposed at the other end of the plug body  541 . The plug connector  547  is narrower than the plug body  541  and may have a shape protruding from the plug body  541 . The plug connector  547  may be a part combined with the aforementioned body slot. 
     The plug connector  547  may include a plurality of connector pins  573  provided to the face combined with the body slot. The connector pins  573  may protrude forward from the plug connector  547 . The plurality of connector pins  573  may be arranged at intervals. The connector pins  573  may be inserted into the connector sockets of the body slot. The positions of the connector pins  573  may correspond to the positions of the connector sockets for correct insertion. That is, intervals of the connector pins  573  can correspond to intervals of the connector sockets. Data can be transferred to the FPC board through the connector pins  573 . 
     Referring to  FIG. 32( a ) , the conventional display device may have a plug  23  with a uniform width. Accordingly, signal terminals and power terminals disposed inside of the plug  23  may not be spread laterally, and thus the thickness PCW of the plug  23  may be greater than the internal width of the body  10 . 
     Therefore, the plug  23  is exposed to the outside rather than being inserted into the body  10 . In this case, the appearance of the display device is not clean since a wide face of the plug  23  is exposed to the outside. In addition, the exposed plug may distract the user from the display screen. 
     Referring to  FIG. 32( b ) , according to the display device according to the present invention, the width of the plug  442  in the first direction increases with increasing distance to the side opposite the flat cable  161 . Accordingly, the signal terminals and power terminals of the plug  442  are spread wide. The width ICW of the plug  442  may be less than the internal width of the body  10 . 
     Accordingly, the plug  442  can be inserted into the body  10  and thus the plug  442  is not exposed to the outside. In this case, the flat cable  161  appears to be directly coupled to the body  10 . Therefore, the display device has a neat appearance and the user can concentrate on the display screen. 
     Referring to  FIG. 33 , in the display device according to the present invention, the FPC board  174  may be coupled to the plug  442  through a variable FPC  617 . The variable FPC  617  may have functions and a structure identical or similar to the FPC board  174 . 
     The variable FPC  617  may have a plurality of connecting portions coupled to the FPC board  174 , which are disposed at one end thereof, and a connecting portion coupled to the connector  157 , which is disposed at the other end thereof. The connecting portion with the connector  157  is narrower than the plurality of connecting portions. Accordingly, the variable FPC  617  can connect various types of signal terminals and power terminals to the plug  442 . 
     The connecting portion of the variable FPC  617 , which is coupled to the connector  157 , may be located outside of the body  10 . Accordingly, the plug  442  is not inserted into the body  10  and thus the thickness of the plug  442  can be freely set irrespective of the thickness of the body  10 . 
     Referring to  FIG. 34 , according to the present invention, an empty space  631  may be provided inside the attached panel  700 . The flat cable  161  can couple the body  10  and the housing  500  through the empty space  631 . The empty space  631  can be formed by making a hole in the attached panel  700 . However, the present invention is not limited thereto and the empty space  631  may be formed by setting a free-standing wall. 
     The empty space  631  includes a body penetrating part  672  corresponding to the body  10  and a housing penetrating part  674  corresponding to the housing  500  in order to couple the body  10  and the housing  500 . The above description may be applied to embodiments which will be described below. 
     The variable FPC  672  may be bent at a part of the body  10 , which is exposed to the outside. The bent variable FPC  672  may be inserted into the body penetrating part  672  to be coupled to the plug  442 . The flat cable  161  extended from the plug  442  may be coupled to the housing  500  through the housing penetrating part  674 . 
     According to the display device of the present invention, the body  10  is thin since the plug  44  is located outside of the body  10  and the appearance of the display device is clean since the thick plug  442  is located in the empty space  631 . 
     Referring to  FIG. 35 , the FPC board  174  may be directly coupled to a plurality of plugs  442 . The plugs  442  may be connected through the connector  157  on the FPC board  174 . Since the plurality of plugs  442  is directly coupled to the FPC board  174 , the plugs  442  are not easily separated from the FPC board  174 . 
     Cables coupled to the plugs  442  can be collected and connected to the one flat cable  161 . The plugs  442  are located inside of the body  10  and thus are not exposed to the outside. 
     Referring to  FIG. 36 , the flat cable  161  can be bent at the region of the body  10  which is exposed to the outside. According to the present embodiment, the housing  500  and the body  10  are not easily separated from each other since the housing  500  and the body  10  are coupled through the flat cable  161 . In addition, since the plugs are not exposed to the outside, the body  10  and the housing  500  can be easily coupled even if the empty space  631  is narrow. 
     Referring to  FIG. 37 , the flat cable  161  may contact the variable FPC  617 . The variable FPC  617  and the flat cable  161  may be coupled using the connector  157 . 
     A cable cover  652  that shields at least part of the variable FPC  617  and the flat cable  161  may be provided to the rear side of the display panel  100 . The cable cover  652  can be coupled to the display panel  100  through at least one screw  117  provided to the upper end thereof and at least one latch  119  provided to the lower end thereof. 
     The cable cover  652  can support the rear side of the flat cable  161 . Accordingly, the cable cover  652  can prevent the flat cable  161  from being separated from the rear side of the display panel  100 . 
     A cable stopper  682  may be provided to the center of the lower end of the cable cover  652 . The cable stopper  682  may be fixed by a protrusion  615  provided to the center of the lower end of the cable cover  652 . The cable stopper  682  can fix the flat cable  161 . The cable stopper  682  can prevent the flat cable  161  from being vertically separated. In addition, since the cable stopper  682  fixes the flat cable  161 , the flat cable  161  is not separated from the variable FPC  617  even if the flat cable  161  located at the lower end of the cable stopper  682  is bent. 
     Referring to  FIG. 38 , the flat cable  161  may be bent at the part of the body  10  which is exposed to the outside. 
     According to the present embodiment, the body  10  and the flat cable  161  may not be coupled using the plug . Accordingly, the thickness of the body  10  can be reduced. In addition, the flat cable  161  may not be easily separated from the body  10  since the flat cable  161  is fixed by the cable stopper, which is not shown. The body  10  and the housing  500  can be easily connected even if the empty space  631  is narrow since the plug is not used. 
     Referring to  FIG. 39 , when the body  10  and the housing  500  are separated by a long distance, the body  10  and the housing  500  can be connected through a plurality of flat cables  161 . That is, the body  10  and the housing  500  can transfer data through the plurality of flat cables  161 . 
     Each flat cable  161  can be coupled through the plug  442 . Since the body  10  and the housing  500  are connected through the flat cables  161  only, the display device can have a neat appearance. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.