Abstract:
A display device comprises a display panel comprising signal lines and configured to display images; a panel support frame coupled to at least a bottom surface of the display panel to support the display panel; a plurality of guide protrusions inserted at predetermined locations of the panel support frame, each of the plurality of guide protrusions including an insertion groove open to receive a guide member configured to connect the display device with another display device; a driving circuit arranged at one side of the panel support frame; a cover shield covering the driving circuit at the side of the panel support frame; and a side cover film covering the cover shield located at the side of the panel support frame, the side cover film including a plurality of guide holes that are each aligned with a corresponding one of the plurality of guide protrusions.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the benefit of Republic of Korea Patent Application No. 10-2015-0132593 filed on Sep. 18, 2015, which is hereby incorporated by reference for all purposes as if fully set forth herein. 
       BACKGROUND 
       [0002]    Field of Technology 
         [0003]    The present disclosure relates to a display device and a multi display device comprising the same. 
         [0004]    Discussion of the Related Art 
         [0005]    Display devices such as a liquid crystal display device, a plasma display panel, and an organic light emitting display device have been developed up to now. 
         [0006]    The display device includes a display panel for displaying an image, and a driving circuit for driving the display panel. 
         [0007]      FIG. 1  is a brief view illustrating a display device according to the related art. 
         [0008]    Referring to  FIG. 1 , the display device according to the related art includes a display panel  10 , a driving circuit  30 , and a front case  50 . 
         [0009]    The display panel  10  displays a predetermined image by controlling transmittance of light emitted from a plurality of light sources. To this end, the display panel  10  includes a lower substrate  13  and an upper substrate  15 . 
         [0010]    The lower substrate  13  is provided with various signal lines (not shown), and a signal pad  17  is provided at an end of the signal lines. 
         [0011]    The upper substrate  15  is bonded to the lower substrate  13 , but not to the signal pad  17  of the lower substrate  13  by interposing a liquid crystal layer (not shown) there between. Therefore, the upper substrate  15  is formed to have a size smaller than that of the lower substrate  13 . The upper substrate  15  is provided with color filters formed to correspond to respective pixels, and may additionally be provided with a common electrode to which a common voltage is applied in accordance with a driving mode of the liquid crystal layer. 
         [0012]    The driving circuit  30  is connected with the signal pad  17  to drive the display panel  10 . The driving circuit  30  includes a flexible circuit film  31 , a driving integrated circuit  33 , and a printed circuit board  35 . 
         [0013]    The flexible circuit film  31  is attached to an upper surface of the signal pad  17  which is exposed. 
         [0014]    The driving integrated circuit  33  is attached to an upper surface of the flexible circuit film  31 . This driving integrated circuit  33  may have a chin on film (COF) structure. 
         [0015]    The printed circuit board  35  applies various signals to the display panel  10  through the flexible circuit film  31 . To this end, the printed circuit board  35  is in contact with the flexible circuit film  11 . 
         [0016]    The front case  50  covers a front edge portion of the display panel  10  and the driving circuit  30 . 
         [0017]    In the aforementioned display device of the related art, the front case  50  is provided to surround the signal pad  17  and the driving circuit  30 . In this case, a bezel area of the display device may be increased. 
         [0018]    Recently, a multi display device has been developed, which realizes a large-sized display by arranging a plurality of display devices in a tile pattern. If the bezel area of the display device is increased, an external esthetic sense of the multi display device is deteriorated. 
         [0019]    The aforementioned background art is technical information owned by the inventor of this application to devise the present invention or acquired during the devising procedure of the present invention, and is not always considered as the known art disclosed to the general public prior to filing of the present invention. 
       SUMMARY 
       [0020]    Accordingly, the present disclosure is directed to a display device and a multi display device comprising the same, which substantially obviate one or more problems due to limitations and disadvantages of the related art. 
         [0021]    An advantage of the present invention is to provide a display device provided with guide protrusions, which may reduce a bezel area and improve assembly accuracy of a cover shield, and a multi display device comprising the same. 
         [0022]    Additional advantages and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. 
         [0023]    To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a display device according to the present disclosure comprises a display panel comprising signal lines and configured to display images; a panel support frame coupled to at least a bottom surface of the display panel to support the display panel; a plurality of guide protrusions inserted at predetermined locations of the panel support frame, each of the plurality of guide protrusions including an insertion groove open to receive a guide member configured to connect the display device with another display device; a driving circuit arranged at one side of the panel support frame; a cover shield covering the driving circuit at the side of the panel support frame; and a side cover film covering the cover shield located at the side of the panel support frame, the side cover film including a plurality of guide holes that are each aligned with a corresponding one of the plurality of guide protrusions. 
         [0024]    In another aspect of the present disclosure, a multi display device comprises a first display module including a plurality of guide protrusions in at least one side of the first display module, each of the plurality of guide protrusions including an insertion groove; a second display module including a plurality of guide protrusions in at least one side of the second display module, each of the plurality of guide protrusions of the second display module including an insertion groove; and a plurality of guide members connecting together the first display module and the second display module, each guide member including a first end and a second end, the first end of each guide member inserted into one of the plurality of guide protrusions of the first display module and the second end of each guide member inserted into one of the plurality of guide protrusions of the second display module;. 
         [0025]    It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0026]    The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings: 
           [0027]      FIG. 1  is a cross-sectional view illustrating a display device of the related art; 
           [0028]      FIG. 2  is a view illustrating a display device according to one embodiment of the present disclosure; 
           [0029]      FIG. 3  is a cross-sectional view illustrating a section taken along line I-I′ shown in  FIG. 2  according to one embodiment of the present disclosure; 
           [0030]      FIG. 4  is a cross-sectional view illustrating a section taken along line II-II′ shown in  FIG. 2 ; 
           [0031]      FIG. 5  is a brief cross-sectional view illustrating a section taken along line III-III′ shown in  FIG. 2  according to one embodiment of the present disclosure; 
           [0032]      FIG. 6  is an exploded perspective view illustrating a display device according to one embodiment of the present disclosure; 
           [0033]      FIGS. 7A to 7C  are views illustrating an assembly process of a display device according to one embodiment of the present disclosure; 
           [0034]      FIG. 8  is a view illustrating a multi display device according to the first embodiment of the present disclosure; 
           [0035]      FIG. 9  is a cross-sectional view illustrating a section taken along line IV-IV′ shown in  FIG. 8  according to one embodiment of the present disclosure; 
           [0036]      FIG. 10  is a view illustrating a multi display device according to the second embodiment of the present disclosure; 
           [0037]      FIG. 11  is a cross-sectional view illustrating a section taken along line V-V′ shown in  FIG. 10  according to one embodiment of the present disclosure; and 
           [0038]      FIG. 12  is a view illustrating a multi display device according to the third embodiment of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0039]    Terms disclosed in this specification should be understood as follows. 
         [0040]    The term of a singular expression should be understood to include a multiple expression as well as the singular expression if there is no specific definition in the context. The terms such as “the first” and “the second” are used only to differentiate one element from other elements. Thus, a scope of claims is not limited by these terms. Also, it should be understood that the term such as “include” or “have” does not preclude existence or possibility of one or more features, numbers, steps, operations, elements, parts or their combinations. It should be understood that the term “at least one” includes all combinations related with any one item. For example, “at least one among a first element, a second element and a third element” may include all combinations of two or more elements selected from the first, second and third elements as well as each element of the first, second and third elements. Also, if it is mentioned that a first element is positioned “on or above” a second element, it should be understood that the first and second elements may be brought into contact with each other, or a third element may be interposed between the first and second elements. 
         [0041]    Hereinafter, preferred embodiments of a display device and a multi display device comprising the same according to the present invention will be described with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Also, in the following description of the present invention, if detailed description of elements or functions known in respect of the present invention is determined to make the subject matter of the present invention unnecessarily obscure, the detailed description will be omitted. 
         [0042]      FIG. 2  is a view illustrating a display device according to one embodiment of the present disclosure,  FIG. 3  is a cross-sectional view illustrating a section taken along line I-I′ shown in  FIG. 2 ,  FIG. 4  is a cross-sectional view illustrating a section taken along line II-II′ shown in  FIG. 2 ,  FIG. 5  is a brief cross-sectional view illustrating a section taken along line III-III′ shown in  FIG. 2 , and  FIG. 6  is an exploded perspective view illustrating a display device according to one embodiment of the present disclosure. 
         [0043]    Referring to  FIGS. 2 to 6 , the display device according to one embodiment of the present disclosure includes a display panel  100 , a panel support frame  200 , a driving circuit  300 , a protective film  450 , a plurality of guide protrusions  500 , a cover shield  400 , a side cover film  900 , and a backlight unit  600 . 
         [0044]    The display panel  100  displays a predetermined image by controlling light emitted from a plurality of light sources. To this end, the display panel  100  includes a lower substrate  110 , an upper substrate  130 , a lower polarizing film  150 , and an upper polarizing film  170 . 
         [0045]    The lower substrate  110  includes a plurality of pixels (not shown) formed per area where a plurality of gate lines (not shown) cross a plurality of data lines (not shown). Each pixel may include a thin film transistor (not shown) connected to the gate lines and the data lines, a pixel electrode connected to the thin film transistor, and a common electrode formed to adjoin the pixel electrode, to which a common electrode is supplied. The lower substrate  110  controls light transmittance of a liquid crystal layer by forming an electric field corresponding to a differential voltage between a data voltage and a common voltage, which are applied to each pixel. 
         [0046]    The lower substrate  110  includes signal lines (not shown). The signal lines are connected to the driving circuit  300 . The signal lines may be the gate lines and/or the data lines. Also, the signal lines may be extension lines extended from the gate lines and/or the data lines. 
         [0047]    The upper substrate  130  is bonded to the lower substrate  110  by interposing the liquid crystal layer (not shown) there between. The upper substrate  130  may be provided with color filters corresponding to the respective pixels, and may additionally be provided with a common electrode to which a common voltage is supplied in accordance with a driving mode of the liquid crystal layer. 
         [0048]    The lower substrate  110  and the upper substrate  130  may be formed in various types known in the art in accordance with driving modes of the liquid crystal layer, for example, a twisted nematic (TN) mode, a vertical alignment (VA) mode, an in plane switching (IPS) mode, and a fringe field switching (FFS) mode. 
         [0049]    The lower polarizing film  150  is attached to a lower surface of the lower substrate  110  to polarize light incident upon the lower substrate  110 . At this time, the lower polarizing film  150  may be attached to a full lower area of the lower substrate  110 , or may be attached to the other area except a lower edge area of the lower substrate  110 . 
         [0050]    The upper polarizing film  170  is attached to a front surface of the upper substrate  130  to polarize light emitted to the outside by transmitting the upper substrate  130 . 
         [0051]    The lower polarizing film  150  and the upper polarizing film  170  have their respective polarizing functions different from each other through elongation processes performed in directions opposite to each other, and have their respective contractile forces in directions opposite to each other due to elongation. Each of the lower polarizing film  150  and the upper polarizing film  170  is attached to each of the lower substrate  110  and the upper substrate  130 , whereby each contractile force of the lower polarizing film  150  and the upper polarizing film  170  is counterbalanced. As a result, the display panel  100  forms a flat plane state without being bent upwardly or downwardly. 
         [0052]    According to one embodiment of the present disclosure, since the driving circuit  300  connected to the signal line is attached to one side of the lower substrate  110  and the upper substrate  130 , it is not required to externally expose the upper surface of the signal line unlike the related art. Therefore, the lower substrate  110  and the upper substrate  130  may be provided to have the same size, and a size of a bezel area may be reduced. 
         [0053]    The panel support frame  200  supports a rear (e.g., bottom) edge portion of the display panel  100 , and receives the driving circuit  300  therein. The panel support frame  200  includes a sidewall portion  210  and a receiving portion  230 . 
         [0054]    The sidewall portion  210  supports the rear edge portion of the display panel  100  and an upper portion of the driving circuit  300 . In this case, a panel coupling member  220  may be provided between the sidewall portion  210  and the display panel  100 . Since the panel coupling member  220  is provided, the display panel  100  may stably be fixed on the sidewall portion  210 . The panel coupling member  220  may be an optical hardening adhesive, a thermal hardening adhesive, a double-sided tape, or a double-sided adhesive pad. 
         [0055]    The receiving portion  230  is provided at an outer side of the sidewall portion  210 . The receiving portion  230  receives a lower portion of the driving circuit  300 . To this end, the receiving portion  230  is concavely provided at an outer side of the panel support frame  200 . 
         [0056]    Additionally, the panel support frame  200  according to one embodiment of the present disclosure further includes a plurality of protrusion holders  270 . The plurality of protrusion holders  270  are provided in the receiving portion  230  overlapped between the plurality of flexible circuit films  310 . In this case, the plurality of flexible circuit films  310  are arranged to be spaced apart from each other at a certain interval, and the plurality of protrusion holders  270  are provided between the plurality of flexible circuit films  310  spaced apart from each other. Therefore, the plurality of protrusion holders  270  are not overlapped with the plurality of flexible circuit films  310 . 
         [0057]    A plurality of guide protrusions  500  are inserted into the plurality of protrusion holders  270  formed in the panel support frame  200 . Therefore, the plurality of guide protrusions  500  are fixed to the panel support frame  200 . Thus, the plurality of guide protrusions  500  are inserted at predetermined locations of the panel support frame  200 . The plurality of protrusion holders  270  may be, but not limited to, through holes provided in the receiving portion  230 . 
         [0058]    The driving circuit  300  is arranged at one side of the display panel  100 , and is connected with the signal line. The upper portion of the driving circuit  300  is supported in the sidewall portion  210  and electrically connected with the signal line. Also, the lower portion of the driving circuit  300  is received in the receiving portion  230  and connected to the cover shield  400 . 
         [0059]    The driving circuit  300  includes a plurality of flexible circuit films  310 , a driving integrated circuit  330 , and a printed circuit board  350 . 
         [0060]    The plurality of flexible circuit films  310  are connected with the signal line by being attached to one side of the display panel  100 . That is, the plurality of flexible circuit films  310  are attached to the sides of the lower substrate  110  and the upper substrate  120  in accordance with a side bonding manner. An upper portion of each of the flexible circuit films  310  is supported in the outer side of the sidewall portion  210  of the panel support frame  200 . A lower portion of each of the flexible circuit films  310  is bent from its upper portion and received in the receiving portion  230 . 
         [0061]    In the display device according to one embodiment, since the plurality of flexible circuit films  310  are attached to one side of the display panel  100 , it is not required to externally expose the signal line unlike the related art. Therefore, the bezel area may be reduced as compared with the display device of the related art. 
         [0062]    The driving integrated circuit  330  is packaged in the upper surface of the plurality of flexible circuit films  310 . The driving integrated circuit  330  is received in the receiving portion  230  and is in contact with the cover shield  400 . The driving integrated circuit  330  may be packaged in, but not limited to, a chip on film (COF). 
         [0063]    The printed circuit board  350  is received in the receiving portion  230  and connected to the plurality of flexible circuit films  310 . The printed circuit board  350  applies various signals required for driving of the display panel  100  to each of the flexible circuit films  310 . 
         [0064]    A substrate support member  370  for supporting the printed circuit board  350  may be provided between the printed circuit board  350  and the receiving portion  230 . The substrate support member  370  is provided on the bottom of the receiving portion  230  and supports the printed circuit board  350 . 
         [0065]    The protective film  450  is attached to one side of the panel support frame  200  to support the upper portion of each of the plurality of flexible circuit films  310 . The protective film  450  is guided by the plurality of guide protrusions  500  and attached to the outer side of the sidewall portion  210  of the panel support frame  200 . In this case, the protective film  450  is not overlapped with the guide protrusions  500 . 
         [0066]    According to one embodiment, since the protective film  450  is provided between the panel support frame  200  and the plurality of flexible circuit films  310 , the plurality of flexible circuit films  310  may be prevented from being damaged by the panel support frame  200 . 
         [0067]    Each of the plurality of guide protrusions  500  is provided at one side of the panel support frame  200  corresponding between the plurality of flexible circuit films  310 . Each of the plurality of guide protrusions  500  is inserted into each of the plurality of protrusion holders  270  provided in the receiving portion  230 . The plurality of guide protrusions  500  have an insertion groove  555  concavely provided toward an inner side of the panel support frame  200 . The insertion groove  555  receive a guide member  550  in order to guide the protective film  450 , the cover shield  400 , and the side cover film  900  during assembly of the display device. 
         [0068]    The plurality of guide protrusions  500  are arranged between the protective film  450  and the printed circuit board  350  to guide the attachment position of the protective film  450 . Since the plurality of guide protrusions  500  guide the attachment position of the protective film  450 , the protective film  450  may accurately be attached to one side of the panel support frame  200 . 
         [0069]    Each of the plurality of guide protrusions  500  passes through the cover shield  400  to guide the cover shield  400  so that the cover shield  400  may easily be assembled in the panel support frame  200 . That is, if a fastening member  425  is inserted into a fastening hole  423  to fix the cover shield  400  to the panel support frame  200 , the cover shield  400  may be distorted. To prevent the cover shield  400  from being distorted, in one embodiment, after the cover shield  400  is primarily fixed to the panel support frame  200  by the plurality of guide protrusions  500 , the cover shield  400  and the panel support frame  200  are fastened to each other. In this case, the cover shield  400  may be coupled with the panel support frame  200  more easily. 
         [0070]    The plurality of guide protrusions  500  guide the attachment position of the side cover film  900  so that the side cover film  900  is not protruded toward the upper surface of the display panel  100  and the lower surface of the cover shield  400 . In this case, a guide member  550  may be inserted into each of the plurality of guide protrusions  500 . The inserted guide member  550  guides the side cover film  900  by passing through a guide hole  910  provided in the side cover film  900 . Therefore, the side cover film  900  may accurately be attached without being protruded toward the upper surface of the display panel  100  and the lower surface of the cover shield  400 . In one embodiment, each guide member  550  is cylindrically shaped and has a first end and a second end that are respectively inserted into different display devices to connect together the display devices. 
         [0071]    The plurality of guide protrusions  500  may additionally be provided at the other sides except one side of the panel support frame  200 . The additionally provided guide protrusions  500  may provide the same effect as that of the guide protrusions  500  provided at one side of the panel support frame  200 . 
         [0072]    The guide member  550  according to one embodiment is removed after guiding the protective film  450  and the side cover film  900 , and is shown in a dotted line in the drawing of the present disclosure. The guide member  550  will be described later through the process of attaching the protective film  450  and the side cover film  900  and the process of assembling the cover shield  400 . 
         [0073]    The cover shield  400  is provided at one side of the panel support frame  200 . The lower portion of the cover shield  400  is fastened with the panel support frame  200 . The cover shield  400  receives the lower portion of each of the plurality of flexible circuit films  310  and the printed circuit board  350  in the receiving portion  230 . The cover shield  400  includes a pressurizing protrusion  410 . 
         [0074]    The pressurizing protrusion  410  is bent toward the receiving portion  230 . The pressurizing portion  410  presses the lower portion of each of the plurality of flexible circuit films  310  so that the driving circuit  300  may be arranged in the receiving portion  230 . Each of the plurality of flexible circuit films  310  is bent by the pressurizing protrusion  410  and stably received in the receiving portion  230 . In this specification, the pressurizing protrusion  410  bent toward the receiving portion  230  has been exemplarily described, but not limited to the present disclosure. The pressurizing portion  410  may have a shape protruded toward the receiving portion  230 . 
         [0075]    Additionally, the cover shield  400  may further include a plurality of through portions  420 . Each of the plurality of through portions  420  is overlapped with each of the plurality of guide protrusions  500 . Each of the plurality of through portions  420  passes through each of the plurality of guide protrusions  500 . Therefore, the cover shield  400  may primarily be fixed to the panel support frame  200 . 
         [0076]    According to one embodiment, after the cover shield  400  is primarily fixed to the panel support frame  200 , the fastening hole  423  and the fastening member  425  of the cover shield  400  are fastened to each other, whereby the cover shield  400  is assembled in the panel support frame  200 . Therefore, distortion of the cover shield  400 , which is caused during the process of assembling the cover shield  400  and the panel support frame  200 , may be avoided. 
         [0077]    The side cover film  900  is arranged at one side of the panel support frame  200 . The side cover film  900  covers one side of the display panel  100 , the plurality of flexible films  310 , and the cover shield  400 . The side cover film  900  prevents external light from entering the display device and at the same time prevents light leakage from being generated at a joint portion of the display device. Since the side cover film  900  surrounds the side of the display module, esthetic appearance of the display device may be improved. 
         [0078]    The side cover film  900  has a plurality of guide holes  910 . Each of the plurality of guide holes  910  is overlapped with each of the plurality of guide protrusions  500 . The guide member  550  may pass through the plurality of guide holes  810 . When the side cover film  900  is attached to one side of the display panel  100 , the plurality of flexible circuit films  310  and the cover shield  400 , the inserted guide member  550  guides the side cover film  900 . Therefore, the side cover film  900  is accurately attached without being protruded toward the upper surface of the display panel  100  and the lower surface of the cover shield  400 . 
         [0079]    Additionally, the display device according to one embodiment of the present disclosure further includes a plurality of auxiliary side cover films  950 . The plurality of auxiliary side cover films  950  additionally cover the other sides except one side of the panel support frame  200 . Also, the auxiliary side cover films  950  cover the other sides except one side of the display panel  100  to which the side cover film  900  is attached. 
         [0080]    In this case, each of the plurality of auxiliary side cover films  950  has a plurality of auxiliary guide holes  960 . Each of the plurality of auxiliary guide holes  960  is overlapped with each of the plurality of guide protrusions  500  additionally provided at the other sides except one side of the panel support frame  200 . Each of the plurality of auxiliary side cover films  950  may be made of the same film as the side cover film  900 , and may provide the same effect as that of the side cover film  900 . 
         [0081]    The backlight unit  600  includes a rear cover  610 , a plurality of light source modules  630 , a reflective sheet  640 , a diffusion sheet  650 , and an optical sheet portion  670 . 
         [0082]    The rear cover  610  is arranged below the display panel  100  and coupled to the panel support frame  200 . The rear cover  610  according to one embodiment is formed to include a receiving space formed concavely to have a certain height, and receives the plurality of light source modules  630  therein. For example, the rear cover  610  may include a bottom support  611  and a cover sidewall  613 . 
         [0083]    The bottom support  611  is formed to face the other portion except the edge portion of the display panel  100 , and supports the plurality of light source modules  630 . 
         [0084]    The cover sidewall  613  is bent at a certain height from each side of the bottom support  611  to surround an upper portion of the bottom support  611  and forms a receiving space on the bottom support  611 . In this case, the cover sidewall  613  may be formed to be inclined at a certain angle from each side of the bottom support  611 . The cover sidewall  613  is fastened to the lower surface of the panel support frame  200 . 
         [0085]    Therefore, the bottom support  611  of the rear cover  610  and an inner inclined surface of the panel support frame  200  are arranged to be adjacent to each other. 
         [0086]    The plurality of light source modules  630  are arranged at the bottom support  611  of the rear cover  610  to have a certain interval D 1  and irradiates light to the diffusion sheet  650 . The plurality of light source modules  630  according to one embodiment include a light source printed circuit board  631 , a point light source package  633 , and a light diffusion lens  635 . 
         [0087]    The light source printed circuit board  631  is arranged at the bottom support  611  of the rear cover  610  to have a certain interval. A backlight driving signal line and a connector are packaged in the light source printed circuit board  631 , and the light source printed circuit board  631  is connected to an external backlight driving circuit through the connector. 
         [0088]    The point light source package  633  is packaged on the light source printed circuit board  631  at a certain interval and electrically connected with the backlight driving signal line, whereby the point light source package  633  emits light through a backlight driving signal supplied from the backlight driving signal line. The point light source package  633  may include a light emitting diode driving chip. 
         [0089]    The light diffusion lens  635  is packaged on the light source printed circuit board  631  to cover the point light source package  633 . The light diffusion lens  635  disperses center luminance of the light source modules  630  by diffusing light emitted from the point light source package  633  to prevent a hot spot from occurring and increase an emission area of light. For example, the light diffusion lens  635  may have, but not limited to, a sectional shape such as a semi-sphere shape and a semi-sphere shape of which center is concave. The light diffusion lens  635  may be formed to have a shape that may diffuse light. 
         [0090]    The interval D 1  between the plurality of light source modules  630  may be defined as a pitch between centers of the point light source packages  633  which are adjacent to each other. This interval D 1  may be set in accordance with an optical gap between the upper surface of the light source printed circuit board  631  and the diffusion sheet  650 , whereby luminance of the display panel  100  may uniformly be provided to the entire area. 
         [0091]    The reflective sheet  640  is attached to the bottom support  611  of the lower cover  610  and the inner inclined surface of the panel support frame  200 . The reflective sheet  640  serves to reflect light, which is emitted from the plurality of light source modules  630 , toward the display panel  100 . 
         [0092]    Although not shown, a plurality of reflective patterns of which sizes and intervals are different from one another may be formed on the reflective sheet  640 . The light emitted from the plurality of light source modules  630  moves toward the display panel  100  by means of the reflective patterns. 
         [0093]    The reflective sheet  640  may be made of, but not limited to, a polyester (PET) film, and may be made in a plate shape in which a plurality of reflective patterns are formed. Also, the reflective sheet  640  may be formed of a multi-layered structure in which a film type reflective sheet  640  is attached onto a plastic plate. 
         [0094]    The diffusion sheet  650  is arranged below the display panel  100  to cover the bottom support  611  of the rear cover  610  and diffuses incident light from the plurality of light source modules  630 . This diffusion sheet  650  substitutes for the related art diffusion plate, and is formed at a thickness relatively thinner than the related art diffusion plate to include at least one of a haze, a light diffusion pattern and a light diffusion member. 
         [0095]    The optical sheet portion  670  is arranged on the light source modules  630  and irradiates incident light from the light source modules  630  to the display panel  100  by improving luminance property of the light. 
         [0096]    The optical sheet portion  670  may include, but not limited to, a lower diffusion sheet, a prism sheet, and an upper diffusion sheet. The optical sheet portion  670  may be comprised of combination of two or more selected from a diffusion sheet, a prism sheet, a dual brightness enhancement film and a lenticular sheet. 
         [0097]    The optical sheet portion  670  serves to move light toward the display panel  100  by condensing and diffusing the light, whereby luminance of the display panel  100  may be increased. 
         [0098]      FIGS. 7A to 7C  are views illustrating an assembly process of a display device according to one embodiment of the present disclosure, and relate to an assembly process of the protective film  450 , the cover shield  400 , and the side cover film  900  in an assembly process of the aforementioned display device of  FIG. 2 . Therefore, the same reference numbers will be used throughout the drawings to refer to the same or like parts, and repeated description in material and structure of each element will be omitted. 
         [0099]    First of all, referring to  FIG. 7A , the protective film  450  is attached to one side of the panel support frame  200 . The protective film  450  is attached to the panel support frame  200  disposed on the plurality of guide protrusions  500  based on the plurality of guide protrusions  500 . In this case, the protective film  450  is not overlapped with the guide protrusions  500 . The guide member  550  may be inserted into the plurality of guide protrusions  500 . The guide member  550  is fastened to the plurality of guide protrusions  500  and guides the attachment position of the protective film  450  to more accurately attach the protective film  450 . 
         [0100]    Then, referring to  FIG. 7B , the cover shield  400  is assembled in one side of the panel support frame  200 . In this case, the cover shield  400  is fixed to the panel support frame  200  so that the plurality of guide protrusions  500  and the guide member  550  pass through the through portion  420  of the cover shield  400 . Then, the fastening member  425  fastened to the fastening hole  423  to fix the lower portion of the cover shield  400  to the panel support frame  200 . Therefore, the cover shield  400  may accurately be assembled in the panel support frame  200  without distortion. At this time, the lower portion of each of the plurality of flexible circuit films  310  and the printed circuit board  350  are received in the receiving portion  230 . 
         [0101]    Since the cover shield  400  may be guided sufficiently by the plurality of guide protrusions  500  during the process of assembling the cover shield  400  and the panel support frame  200 , the guide member  550  may not be used. However, if the guide member  550  is provided, the cover shield  400  and the panel support frame  200  may be assembled more easily. 
         [0102]    Finally, referring to  FIG. 7C , the side cover film  900  covers one side of the display panel  100 , the plurality of flexible circuit films  310  and the cover shield  400 . In this case, the guide member  550  passes through each of the plurality of guide holes  910  provided in the side cover film  900 . Therefore, the side cover film  900  may accurately be attached without being protruded toward the upper surface of the display panel  100  and the lower surface of the cover shield  400 . The guide member  550  is removed after attaching the side cover film  900 . 
         [0103]      FIG. 8  is a brief view illustrating a multi display device according to the first embodiment of the present disclosure,  FIG. 9  is a cross-sectional view illustrating a section taken along line IV-IV′ shown in  FIG. 8  and illustrates that the aforementioned display devices according to one embodiment of the present disclosure are connected with each other from side to side. Therefore, the same reference numbers will be used throughout the drawings to refer to the same or like parts, and repeated description in material and structure of each element will be omitted. 
         [0104]    Referring to  FIGS. 8 and 9 , the multi display device according to the first embodiment includes a first display module DM 1 , a second display module DM 2 , and a connection member  700 . 
         [0105]    The first display module DM 1  has the same elements as those of the aforementioned display device. Therefore, auxiliary side cover films  950  are attached to a side of the first display module DM 1 , and each of the auxiliary side cover films  900  has a plurality of auxiliary guide holes  960  respectively overlapped with the plurality of guide protrusions  500  additionally provided at the other sides except one side of the panel support frame  200 . 
         [0106]    The second display module DM 2  has the same elements as those of the first display module DM 1 . The second display module DM 2  is laterally coupled to one side of the first display module DM 1 . In this case, auxiliary guide holes  960  provided in each of the first display module DM 1  and the second display module DM 2  are arranged to face each other. 
         [0107]    The connection member  700  connects the first display module DM 1  and the second display module DM 2  with each other. The connection member  700  is coupled to the guide protrusions  500  provided in each of the first display module DM 1  and the second display module DM 2 . In this case, the guide protrusions  500  have an insertion groove  555 , and the connection member  700  is inserted into the insertion groove  555 . 
         [0108]    Since the guide protrusions  500  are provided in each of the first display module DM 1  and the second display module DM 2 , the first display module DM 1  and the second display module DM 2  may easily be coupled to each other even without separate alignment. 
         [0109]      FIG. 10  is a view illustrating a multi display device according to the second embodiment of the present invention, and  FIG. 11  is a cross-sectional view illustrating a section taken along line V-V′ shown in  FIG. 10  and illustrates that the aforementioned display devices according to one embodiment of the present disclosure are connected with each other up and down. Therefore, the same reference numbers will be used throughout the drawings to refer to the same or like parts, and repeated description in material and structure of each element will be omitted. 
         [0110]    Referring to  FIGS. 10 and 11 , the multi display device according to the second embodiment includes a first display module DM 1 , a second display module DM 2 , and a connection member  700 . 
         [0111]    The side cover film  900  is attached to one side of the first display module DM 1 , and has a plurality of guide holes  910  respectively overlapped with the plurality of guide protrusions  500  provided at one side of the panel support frame. 
         [0112]    A plurality of auxiliary side cover films  950  are attached to a side of the second display module DM 2 , and each of the plurality of auxiliary side cover films  950  has a plurality of auxiliary guide holes  960  respectively overlapped with the plurality of guide protrusions  500  additionally provided at the other sides except one side of the panel support frame  200 . 
         [0113]    The first display module DM 1  and the second display module DM 2  are coupled to each other up and down. Therefore, each of the guide holes  910  of the first display module DM 1  and each of the auxiliary guide holes  960  are arranged to face each other. 
         [0114]    The connection member  700  connects the first display module DM 1  and the second display module DM 2  with each other. The connection member  700  is inserted into the guide protrusions  500  provided in each of the first display module DM 1  and the second display module DM 2 . 
         [0115]    Since the guide protrusions  500  are provided in each of the first display module DM 1  and the second display module DM 2 , the first display module DM 1  and the second display module DM 2  may easily be coupled to each other even without separate alignment. 
         [0116]      FIG. 12  is a brief view illustrating a multi display device according to the third embodiment of the present disclosure, and illustrates that the aforementioned display devices according to one embodiment of the present invention are connected with each other up and down and from side to side. Therefore, a cross-sectional view taken along line IV-IV′ shown in  FIG. 12  is the same as that of the multi display device according to the first embodiment of the present disclosure described with reference to  FIG. 9 , and a cross-sectional view taken along line V-V′ shown in  FIG. 12  is the same as that of the multi display device according to the second embodiment of the present invention described with reference to  FIG. 11 . Therefore, the same reference numbers will be used throughout the drawings to refer to the same or like parts, and repeated description in material and structure of each element will be omitted. 
         [0117]    Referring to  FIG. 12 , the multi display device according to the third embodiment includes a first display module DM 1 , a second display module DM 2 , a third display module DM 3 , a fourth display module DM 4 , and a connection member  700 . 
         [0118]    The first display module DM 1  is coupled to the second display module DM 2  from side to side, and is coupled to the third display module DM 3  up and down. In this case, the connection member  700  is provided between the first display module DM 1  and the second display module DM 2  to connect the first display module DM 1  with the second display module DM 2 . Also, the connection member  700  is provided between the first display module DM 1  and the third display module DM 3  to connect the first display module DM 1  with the third display module DM 3 . 
         [0119]    The second display module DM 2  is coupled to the fourth display module DM 4  up and down. In this case, the connection member  700  is provided between the second display module DM 2  and the fourth display module DM 4  to connect the second display module DM 2  with the fourth display module DM 4 . 
         [0120]    The third display module DM 3  is coupled to the fourth display module DM 4  from side to side. The connection member  700  is provided between the third display module DM 3  and the fourth display module DM 4  to connect the third display module DM 3  with the fourth display module DM 4 . 
         [0121]    In this specification, although the present disclosure has been described based on the liquid crystal display device as an example, the present disclosure is not limited to the liquid crystal display device and may be applied to various display devices, for example, an organic light emitting display device. 
         [0122]    According to the present disclosure, the following advantages can be obtained. 
         [0123]    Since the flexible circuit films are attached to one side of the display panel, it is not required to externally expose the signal line unlike the related art. Therefore, the bezel area may be reduced as compared with the display device of the related art. 
         [0124]    Also, since the plurality of guide protrusions guide the attachment position of the protective film and the side cover film, attachment accuracy of the protective film and the side cover film may be improved. Also, after the cover shield is primarily fixed to the panel support frame by the plurality of guide protrusions, the cover shield and the panel support frame are assembled to each other. Therefore, distortion of the cover shield, which is caused during the assembly process may be avoided. As a result, assembly accuracy of the cover shield may be improved. 
         [0125]    It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.