Abstract:
A board connection bracket and an electronic instrument having the same are provided. The electronic instrument includes an electronic instrument body which includes a plurality of board fixing parts on a surface; a printed circuit board which is mounted on the surface of the electronic instrument body; and a board connection bracket which connects the printed circuit board to one of the board fixing parts to fix the printed circuit board to the electronic instrument body.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims priority from Korean Patent Application No. 10-2009-0055108, filed Jun. 19, 2009, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. 
       BACKGROUND 
       [0002]    1. Field 
         [0003]    Apparatuses and methods consistent with the inventive concept relate to electronic devices, and more particularly, to a board connecting bracket which fixes a printed circuit board on a body of an electronic instrument and the electronic instrument having the same. 
         [0004]    2. Description of the Related Art 
         [0005]    Electronic instruments usually include a printed circuit board. 
         [0006]    The size of printed circuit boards is gradually getting smaller with the technological development. Accordingly, mounting a new printed circuit board smaller than a previously used printed circuit board on an electronic instrument might cause problems. 
         [0007]    For example, an image board mounted on a rear surface of a liquid crystal display (LCD) panel may be mounted on the body of the LCD panel by fastening screws on board fixing parts formed on corners of a rear casing of the LCD panel body. If the image board is replaced with a new model smaller than a previous model, the size of a new image board may not fit the positions of the board fixing parts formed on the rear casing of the LCD panel body. 
         [0008]    In this situation, the design of the rear casing may need to be changed in order to mount the new image board. However, because many components besides the image board are mounted on the rear casing, it may be difficult to change the design of the rear casing. Additionally, such redesign requires considerable time and expenses. 
         [0009]    Therefore, there is a need for a method for mounting a new printed circuit board smaller than a previous printed circuit board without changing the design of the main body of an electronic instrument. 
       SUMMARY 
       [0010]    Exemplary embodiments may address at least the above problems and/or disadvantages and other disadvantages not described above. Also exemplary embodiments are not required to overcome the disadvantages described above, and an exemplary embodiment may not overcome any of the problems described above. 
         [0011]    According to one or more exemplary embodiments, there is provided a board connection bracket which connects a new printed circuit board smaller than a previous printed circuit board to the main body of an electronic instrument while maintaining a previous design, and an electronic instrument having the same. 
         [0012]    According to an aspect of an exemplary embodiment, there is provided an electronic instrument, including an electronic instrument body which includes a plurality of board fixing parts on a surface; a printed circuit board which is mounted on the surface of the electronic instrument body; and a board connection bracket which connects the printed circuit board to the board fixing parts so that the printed circuit board is fixed on the electronic instrument body. 
         [0013]    The size of the printed circuit board may be made to cover a part of the plurality of board fixing parts, and the board connection bracket may connect the printed circuit board to the board fixing part which is not covered by the printed circuit board. 
         [0014]    The board connection bracket may include a bracket body; a body supporting part which is extended from the bracket body so that the bracket body is supported on the surface of the electronic instrument body; and a slip prevention part which is extended from the bracket body to prevent the printed circuit board from slipping against the bracket body. 
         [0015]    A first bracket opening may be formed on a side of the bracket body to be fastened with the board fixing part, and a second bracket opening may be formed on another side of the bracket body to be fastened with the printed circuit board. 
         [0016]    At least one of the first and second bracket openings may be formed of a long opening along the lengthwise direction of the bracket body. 
         [0017]    The body supporting part may include first and second body supporting protrusions which are extended toward the direction perpendicular to the bracket body, and the slip prevention part may include first and second slip prevention protrusions which are extended in a direction opposite to the direction in which the first and second body supporting protrusions are extended. 
         [0018]    A slip prevention groove may be formed on the printed circuit board, and the first slip prevention protrusion may be disposed to contact on a corner of the printed circuit board, and the second slip prevention protrusion may be disposed to be inserted into the slip prevention groove. 
         [0019]    The board connection bracket may include an upper bracket and a lower bracket, and wherein an end of the upper bracket may be connected to an end of the lower bracket and another end of the upper bracket may be spaced apart from another end of the lower bracket so that the printed circuit board is inserted. 
         [0020]    A pressurization protrusion which presses the printed circuit board being inserted into the board connection bracket may be formed on an inner surface of the upper bracket. 
         [0021]    The lower bracket may include a lower bracket body which is formed in a plate shape; a body supporting part which is extended from the lower bracket body so that the lower bracket body is supported on the surface of the electronic instrument body; and a slip prevention part which is extended from the lower bracket body to prevent the printed circuit board being inserted into the board connection bracket from slipping against the board connection bracket. 
         [0022]    The body supporting part may include first and second body supporting protrusions which are extended toward the direction perpendicular to the lower bracket body, and the slip prevention part may include first and second slip prevention protrusions which are extended in a direction opposite to the direction in which the first and second body supporting protrusions are extended. 
         [0023]    A slip prevention groove may be formed on the printed circuit board, and the first slip prevention protrusion may be disposed to contact on a corner of the printed circuit board, and the second slip prevention protrusion may be disposed to be inserted into the slip prevention groove. 
         [0024]    The slip prevention groove may be extended to an end of the printed circuit board. 
         [0025]    The electronic instrument body may include an external casing to mount the printed circuit board, and the board fixing parts may be formed on an external surface of the external casing. 
         [0026]    The electronic instrument may be one of an LCD panel, a plasma display panel (PDP), and a light emitting diode (LED) panel, and the printed circuit board may be an image board. 
         [0027]    According to another aspect of an exemplary embodiment, there is provided a board connection bracket which fixes a printed circuit board on an electronic instrument body having a plurality of board fixing parts on a surface, the board connection bracket including a bracket body which includes a side to be fastened on the board fixing part, and another side to be fastened on the printed circuit board; a body supporting part which is extended from the bracket body so that the bracket body is supported on the surface of the electronic instrument body; and a slip prevention part which is extended from the bracket body to prevent the printed circuit board from slipping against the bracket body. 
         [0028]    The size of the printed circuit board may be made to cover a part of the plurality of board fixing parts, and the board connection bracket may connect the printed circuit board to the board fixing part which is not covered by the printed circuit board. 
         [0029]    A first bracket opening may be formed on a side of the bracket body to be fastened with the board fixing part, and a second bracket opening may be formed on another side of the bracket body to be fastened with the printed circuit board, and at least one of the first and second bracket openings may be formed of a long opening along the lengthwise direction of the bracket body. 
         [0030]    According to another aspect of an exemplary embodiment, there is provided a board connection bracket which fixes a printed circuit board on an electronic instrument body having a plurality of board fixing parts on a surface, the board connection bracket including an upper bracket and a lower bracket, wherein an end of the upper bracket may be connected to an end of the lower bracket and another end of the upper bracket may be spaced apart from another end of the lower bracket so that the printed circuit board is inserted. 
         [0031]    The size of the printed circuit board may be made to cover a part of the plurality of board fixing parts, and the board connection bracket may connect the printed circuit board to the board fixing part which is not covered by the printed circuit board. 
         [0032]    A pressurization protrusion which presses the printed circuit board being inserted into the board connection bracket may be formed on an inner surface of the upper bracket. 
         [0033]    The lower bracket may include a lower bracket body which is formed in a plate shape; a body supporting part which is extended from the lower bracket body so that the lower bracket body is supported on the surface of the electronic instrument body; and a slip prevention part which is extended from the lower bracket body to prevent the printed circuit board being inserted into the board connection bracket from slipping against the board connection bracket. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0034]    The above and other aspects will be more apparent by describing certain exemplary embodiments with reference to the accompanying drawings, in which: 
           [0035]      FIG. 1  is a schematic plan view of an LCD panel according to a first exemplary embodiment of the present invention taken from a rear side; 
           [0036]      FIG. 2  is an exploded perspective view of the LCD panel illustrated in  FIG. 1 ; 
           [0037]      FIG. 3A  is an enlarged perspective view of a board connection bracket illustrated in  FIG. 2  according to an exemplary embodiment; 
           [0038]      FIG. 3B  is a perspective view of a board connection bracket illustrated in  FIG. 2  according to another exemplary embodiment; 
           [0039]      FIG. 4  is a side view provided to explain a mounting structure of the board connection bracket illustrated in  FIG. 3A ; 
           [0040]      FIG. 5  is a schematic plan view of an LCD panel according to a second exemplary embodiment taken from a rear side; 
           [0041]      FIG. 6  is an exploded perspective view of the LCD panel illustrated in  FIG. 5 ; 
           [0042]      FIG. 7A  is an enlarged perspective view of a board connection bracket illustrated in  FIG. 6 ; 
           [0043]      FIG. 7B  is a perspective view of a board connection bracket illustrated in  FIG. 5  according to another exemplary embodiment; 
           [0044]      FIG. 8  is a schematic side view of a board connection bracket illustrated in  FIG. 7A , before an image board is inserted; and 
           [0045]      FIG. 9  is a schematic side view of a board connection bracket illustrated in  FIG. 7A , after an image board is inserted. 
       
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
       [0046]    Certain exemplary embodiments are described in greater detail below with reference to the accompanying drawings. 
         [0047]    In the following description, like drawing reference numerals are used for like elements, even in different drawings. The matters defined in the description, such as detailed construction and elements, are provided to assist in a comprehensive understanding of exemplary embodiments. However, exemplary embodiments can be practiced without those specifically defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the application with unnecessary detail. 
         [0048]    An LCD panel according to a first exemplary embodiment is described below with reference to  FIGS. 1 to 4 . 
         [0049]      FIG. 1  is a schematic plan view of an LCD panel according to the first exemplary embodiment taken from a rear side,  FIG. 2  is an exploded perspective view of the LCD panel illustrated in  FIG. 1 , and  FIG. 3A  is an enlarged perspective view of a board connection bracket illustrated in  FIG. 2  according to an exemplary embodiment. 
         [0050]    Referring to  FIGS. 1 ,  2  and  3 A, an LCD panel  100  according to the first exemplary embodiment includes an LCD panel body  110 , an image board  120 , a power board  130 , and board connection brackets  140 . 
         [0051]    The LCD panel body  110  has a liquid crystal panel (not shown), a backlight unit (not shown), optical sheets (not shown), and so on therein. Light provided by the backlight unit is converted into an image having image information while passing through the liquid crystal panel, and is emitted to a front surface of the LCD panel  100 . The LCD panel body  110  includes an external casing  110   a  to house internal components such as the liquid crystal panel, the backlight unit, the optical sheets, and so on. 
         [0052]    The external casing  110   a  includes a front casing  111  and a rear casing  112 . The front casing  111  houses the internal components, and the rear casing  112  is connected to the front casing  111  to cover a rear side of the front casing  111 . 
         [0053]    The rear casing  112  is formed in a rectangular plate shape and made of metal material such as aluminum. Referring to  FIG. 1 , image board fixing parts  114 ,  115  which fix the image board  120  and power board fixing parts  116  which fix the power board  130  protrude from an external surface  113  of the rear casing  112 . 
         [0054]    Female screw threads  114   a ,  115   a  are formed in the center of the image board fixing parts  114 ,  115 . Accordingly, the image board  120  may be directly or indirectly fastened on the image board fixing parts  114 ,  115  by screws  101 ,  102 . Although not illustrated, the female screw threads may be formed in the center of the power board fixing parts  116 . The power board  130  may be fastened on the power board fixing parts  116  by screws  104 . 
         [0055]    The image board  120  is a printed circuit board which converts an image signal received from an external source into a proper format and transfers the converted signal to another driving board (not shown) provided in the LCD panel  100  to drive the internal components. As shown in  FIGS. 1 and 2 , the image board  120  is formed in a rectangular plate shape, and has a plurality of electronic components on a surface thereof. Referring to  FIG. 2 , board fastener openings  121 ,  122  are formed on corners  120   a ,  120   b  of the image board  120  to fasten the image board  120 . 
         [0056]    The board fastener openings  121  are formed on a first end  120   c  of the image board  120  so that the image board  120  is screwed to the image board fixing parts  114 . That is, screws  101  may be fastened to the image board fixing parts  114  formed on the rear casing  112  by being inserted into the board fastener openings  121 , as shown in  FIGS. 1 and 2 . Accordingly, the first end  120   c  of the image board  120  is fixed to the rear casing  112 . 
         [0057]    The board fastener openings  122  disposed on a second end  120   d  of the image board  120  are formed to fasten the image board  120  to the board connection brackets  140 . That is, bolts  103  may fasten the image board  120  and the board connection brackets  140  by being inserted into the board fastener openings  122 , as shown in  FIGS. 1 and 2 . The operation of fastening the image board  120  and the board connection brackets  140  is further described below. 
         [0058]    A slip prevention groove  123  is penetratably formed on the corners  120   b  of the second end  120   d  of the image board  120  in a close proximity to the board fastener opening  122 . The slip prevention groove  123  is provided to prevent the image board  120  from slipping against the board connection bracket  140 , as described in greater detail below. 
         [0059]    The power board  130  is a printed circuit board which supplies power from an external source to the components of the LCD panel  100 , including the image board  120 , the liquid crystal panel, and the backlight unit. Referring to  FIG. 1 , the corners of the power board  130  are fastened to the power board fixing parts  116  formed on an external surface  113  of the rear casing  112  by the screws  104 . A flexible printed circuit board  105  may be arranged between the power board  130  and the image board  120  to electrically connect the power board  130  and the image board  120 . 
         [0060]    The board connection brackets  140  fix the image board  120  to the rear casing  112 . If a size of the image board  120  is sufficiently large to cover all of the image board fixing parts  114 ,  115  formed on the rear casing  112 , the board connection brackets  140  are not needed. 
         [0061]    However, if the image board  120  covers only some of the image board fixing parts  114 ,  115 , as shown in  FIG. 1 , the first end  120   c  of the image board  120  may be directly fixed to the image board fixing parts  114 , but it is impossible for the second end  120   d  to be directly fixed to the image board fixing parts  115 . Accordingly, the LCD panel  100  according to an exemplary embodiment includes the board connection brackets  140  to connect the second end  120   d  of the image board  120  to the image board fixing parts  115  which the image board  120  does not cover. 
         [0062]    For example, the image board  120  may not cover all of the image board fixing parts  114 ,  115 , as shown in  FIG. 1 , when the image board is replaced with a new image board smaller than the image board previously used. 
         [0063]    Referring to  FIG. 3A , the board connection bracket  140  includes a bracket body  150 , a body supporting part  160 , and a slip prevention part  170 . 
         [0064]    The bracket body  150  may be formed as a substantially rectangular plate. A first bracket opening  153  having a circular shape is formed on a first end portion  151  of the bracket body  150 . Referring to  FIG. 2 , a screw  102  may be fastened to the image board fixing part  115  by being inserted into the first bracket opening  153 , and thus the first end portion  151  of the bracket body  150  may be fixed to the rear casing  112 . 
         [0065]    A second bracket opening  154  having a circular shape is formed on a second end portion  152  of the bracket body  150 . Referring to  FIG. 2 , the bolt  103  disposed on the second end  120   d  of the image board  120  is fastened with a nut  103   a  by being inserted into the board fastener opening  122  of the image board  120  and the second bracket opening  154  of the board connection bracket  140 . Therefore, the second end  120   d  of the image board  120  is connected to the second end portion  152  of the bracket body  150 . 
         [0066]    When the first and second bracket openings  153 ,  154  are formed with small circular holes, as shown in  FIG. 3A , the interval between the image board fixing part  115  and the board fastener hole  122  of the image board  120  needs to be within a predetermined range for the board connection bracket  140  to be applied. However, as shown in  FIG. 3B , a first bracket opening  153   a  may have an elongated shape, that is, the opening may have a longer dimension in the lengthwise direction of the bracket body  150  so that the board connection bracket  140  may be used with the image boards of different lengths. 
         [0067]    Alternatively, the second bracket opening  154  may have a longer dimension in the lengthwise direction, or both of the first and second bracket openings  153 ,  154  may have longer dimensions in the lengthwise direction. 
         [0068]    The body supporting part  160  includes a pair of body supporting protrusions  161 ,  162 . The body supporting protrusions  161 ,  162  are substantially rectangular-shaped flanges, and are disposed on opposite sides of the bracket body  150 . The body supporting protrusions  161 ,  162  extend from the center of the bracket body  150  substantially perpendicular to the lengthwise direction of the bracket body  150  to provide support for the vision board  120 . 
         [0069]    The pair of body supporting protrusions  161 ,  162  contact the rear casing  112  so that the bracket body  150  is prevented from drooping toward the rear casing  112 . Accordingly, the image board  120  connected to the board connection bracket  140  is prevented from being bent and damaged by the external force. 
         [0070]    The slip prevention part  170  includes first and second slip prevention protrusions  171 ,  172 . The first and second slip prevention protrusions  171 ,  172  are flanges extending from the second end portion  152  of the bracket body  150  in a direction opposite to the direction in which the body supporting protrusions  161 ,  162  are extended. Accordingly, the slip prevention protrusions  171 ,  172  extend in a direction different from that of the body supporting part  160 . Referring to  FIG. 2 , the first slip prevention protrusion  171  contacts the corner of the image board  120 , and the second slip prevention protrusion  172  is inserted into the slip prevention groove  123  formed on the image board  120 . 
         [0071]    The first and second slip prevention protrusions  171 ,  172  and the slip prevention groove  123  may prevent the image board  120  from slipping against the board connection bracket  140  while the LCD panel  100  is assembled. 
         [0072]    The mounting of the image board  120  and the rear casing  112  on the board connection bracket  140  is further explained with reference to  FIG. 4 .  FIG. 4  is a side view provided to explain a mounting structure of the board connection bracket illustrated in  FIG. 3 . 
         [0073]    Referring to  FIG. 4 , the board fastener opening  122  (referring to  FIG. 2 ) formed on the second end  120   d  of the image board  120  is disposed distally from the image board fixing part  115  formed on the rear casing  112  at a predetermined distance d, e.g., the distance between the bolt  103  and the screw  102 . Accordingly, the second end  120   d  of the image board  120  may be indirectly fixed to the corresponding image board fixing part  115 . 
         [0074]    The first end portion  151  of the board connection bracket  140  is fastened to the image board fixing part  115  by the screw  102 , and the second end portion  152  of the board connection bracket  140  is fastened to the second end  120   d  of the image board  120  by the bolt  103  and the nut  103   a . Accordingly, the second end  120   d  of the image board  120  is indirectly fixed on the image board fixing part  115  via the board connection bracket  140 . 
         [0075]    The LCD panel  100  according to the first exemplary embodiment connects the second end  120   d  of the image board  120  to the image board fixing parts  115  using the pair of board connection brackets  140 , and thus it is possible to fix the image board  120  smaller than an image board previously used on the rear casing  112 , while maintaining a previous design of the rear casing  112 . Accordingly, since it is unnecessary to change the design of the rear casing  112  in order to mount the new image board  120  having the smaller size, the delay caused by changing the design of the image board  120  may be minimized when the LCD panel  100  is assembled. 
         [0076]    An LCD panel according to a second exemplary embodiment is explained with reference to  FIGS. 5 to 9 . The description regarding the LCD panel according to the second exemplary embodiment which is common with that of the first exemplary embodiment will be omitted. 
         [0077]      FIG. 5  is a schematic plan view of an LCD panel according to the second exemplary embodiment taken from a rear side,  FIG. 6  is an exploded perspective view of the LCD panel illustrated in  FIG. 5 , and  FIG. 7A  is an enlarged perspective view of a board connection bracket illustrated in  FIG. 6 . 
         [0078]    Referring to  FIGS. 5 to 7A , an LCD panel  200  according to the second exemplary embodiment includes an LCD panel body  210 , an image board  220 , a power board  230 , and a pair of board connection brackets  240 . 
         [0079]    The LCD panel body  210  includes an external casing  210   a  including a front casing  211  and a rear casing  212 . Referring to  FIGS. 5 and 6 , image board fixing parts  214 ,  215  and power board fixing parts  216  are formed on the rear casing  212 . The image board  220  may be directly or indirectly fastened to the image board fixing parts  214 ,  215  by screws  201 ,  202 , and the power board  230  may be fastened on the power board fixing parts  216  by screws  204 . 
         [0080]    A board fastener opening  221  is formed at corners  220   a  disposed on a first end  220   c  of the image board  220 . The screw  201  is fastened to the image board fixing part  214  of the rear casing  213  by being inserted into the board fastener opening  221 , and thus the first end  220   c  of the image board  220  may be fixed to the rear casing  213 . 
         [0081]    Slip prevention grooves  223  having a rectangular shape are formed on corners  220   b  disposed on a second end  220   d  of the image board  220 . The slip prevention grooves  223  are open toward the second end  220   d  of the image board  220 , unlike the slip prevention groove  123  according to an exemplary embodiment of  FIG. 2 . 
         [0082]    The power board  230  is fastened on the power board fixing parts  216  by the screws  204 . A flexible printed circuit board  205  connects the power board  230  and the image board  220 . 
         [0083]    Similar to the image board  120  according to the first exemplary embodiment, the image board  220  according to the second exemplary embodiment may not cover all of the image board fixing parts  214 ,  215 . Accordingly, as shown in  FIG. 5 , the first end  220   c  of the image board  220  is directly connected to the corresponding image board fixing parts  214 , while the second end  220   d  of the image board  220  is connected to the corresponding image board fixing parts  215  via the board connection brackets  240 . 
         [0084]    Referring to  FIG. 7A , the board connection bracket  240  includes an upper bracket  250  and a lower bracket  260 . The upper bracket  250  and the lower bracket  260  are formed as substantially rectangular plates of metal material. 
         [0085]    A first end portion  251  of the upper bracket  250  is connected to a first end portion  261  of the lower bracket  260 , and a second end portion  252  of the upper bracket  250  is disposed apart from a second end portion  262  of the lower bracket  260 . For example, the first end portion  251  of the upper bracket  250  may be connected to the first end portion  261  of the lower bracket  260  by a welding process, and a gap  242  is formed between the second end portion  252  of the upper bracket  250  and the second end portion  262  of the lower bracket  260 . In addition, the lower bracket  260  is bent into two portions near the first end portion  261  to form the gap  242  between the upper bracket  250  and the lower bracket  260 . 
         [0086]    A first bracket opening  241  extending through the upper and lower brackets  250 ,  260  is formed on the first end portions  251 ,  261  which are connected with each other. Referring to  FIG. 6 , the screw  202  is fastened to the image board fixing part  215  by being inserted into the first bracket opening  241 , and thus the first end portions  251 ,  261  of the board connection bracket  240  are fixed to the rear casing  212 . 
         [0087]    When the first bracket holes  240  are formed of small circular holes, as shown in  FIG. 7A , the interval between the image board fixing part  215  and the second side  2520  of the image board  220  needs to be within a predetermined range for the board connection bracket  240  to be applied. However, as shown in  FIG. 7B , when a first bracket opening  241   a  may have an elongated shape, that is, the opening may have a longer dimension in the lengthwise direction of the board connection bracket  240  so that the board connection bracket  240  may be used with image boards of different lengths. 
         [0088]    A pressurization protrusion  253  is formed on the second end portion  252  of the upper bracket  250  extending toward the lower bracket  260 . Accordingly, when the image board  220  is inserted into the gap  242  between the upper bracket  250  and the lower bracket  260 , the pressure force caused by elastic deformation of the upper bracket  250  may be applied to the image board  220  by the pressurization protrusion  253 . 
         [0089]    The lower bracket  260  includes a lower bracket body  270  which is formed in a plate shape, a body supporting part  280  which extends from the center of the lower bracket body  270  in the direction perpendicular to the lengthwise direction of the lower bracket body  270 , and a slip prevention part  290  which extends in a direction opposite to the direction in which the body supporting part  280  is extended. 
         [0090]    The body supporting part  280  includes a pair of body supporting protrusions  281 ,  282 . The body supporting protrusions  281 ,  282  contact the rear casing  212 , and thus the board connection bracket  240  is prevented from dropping toward the rear casing  212 . Accordingly, the image board  220  connected to the board connection bracket  240  is prevented from being bent and damaged by the external force. 
         [0091]    The slip prevention part  290  includes first and second slip prevention protrusions  291 ,  292 . Referring to  FIG. 6 , the first slip prevention protrusion  291  contacts the second end  220   d  of the image board  220 . The second slip prevention protrusion  292  is inserted into the slip prevention groove  223  formed on the image board  220 . As shown in  FIG. 6 , the slip prevention groove  223  of the image board  220  is extended to the end of the image board  220 . Therefore, when the image board  220  is inserted into the board connection bracket  240 , the second slip prevention protrusion  292  may be inserted into the slip prevention groove  223  to be parallel with the image board  220 . Accordingly, the second end  220   d  of the image board  220  may be inserted into the gap  242  between the upper bracket  250  and the lower bracket  260  without being obstructed by the second slip prevention protrusion  292 . 
         [0092]    The first and second slip prevention protrusions  291 ,  292 , and the slip prevention groove  223  may prevent the image board  220  from slipping against the board connection bracket  240  while the LCD panel  220  is assembled. 
         [0093]    The operation of the board connection bracket according to an exemplary embodiment is further explained with reference to  FIGS. 8 and 9 .  FIG. 8  is a schematic side view of a board connection bracket illustrated in  FIG. 7A , before an image board is inserted, and  FIG. 9  is a schematic side view of a board connection bracket illustrated in  FIG. 7A , after an image board is inserted. 
         [0094]    Referring to  FIG. 8 , the first end portions  251 ,  561  of the upper and lower brackets  250 ,  260 , which constitute the first end portion of the board connection bracket  240 , are fastened to the image board fixing part  215  by the screw  202 . The second end portion  252  of the upper bracket  250  is spaced apart from the second end portion  262  of the lower bracket  260  by the gap  242  into which the second end  220   d  may be inserted. 
         [0095]    When the image board  220  is inserted into the gap  242  between the upper bracket  250  and the lower bracket  260 , the image board  220  is clamped with the board connection bracket  240 , as shown in  FIG. 9 . That is, the image board  220  being inserted into the board connection bracket  240  elastically deforms the upper bracket  250  to be spaced apart from the upper bracket  260 . 
         [0096]    When the upper bracket  250  is elastically deformed, the upper bracket  250  has elastic force toward the lower bracket  260 . The elastic force is applied to the image board  220  which is inserted through the pressurization protrusion  253  formed on the upper bracket  250 . Therefore, the pressurization protrusion  250  causes the image board  220  to be clamped between the upper bracket  250  and the lower bracket  260 . 
         [0097]    In the LCD panel  200  according to the second exemplary embodiment, the second end  220   d  of the image board  220  is connected to the image board fixing part  215  by the board connection bracket  240 , and thus the image board  220  smaller than an image board previously used may be fixed to the rear casing  212 . Accordingly, it is unnecessary to change the design of the rear casing  212  to mount the new image board  220  having the smaller size, and thus the delay caused by changing the design of the image board  220  may be minimized. 
         [0098]    In the LCD panel  200  according to the second exemplary embodiment of the present invention, the second end  220   d  of the image board  220  is clamped with the board connection bracket  240 . Accordingly, in the LCD panel  200  according to the second exemplary embodiment, the process of assembling the components is further reduced because the second end  220   d  is clamped with the board connection bracket  240 . 
         [0099]    According to exemplary embodiments, the first ends  120   c ,  220   c  of the image boards  120 ,  220  are fastened to the rear casings  112 ,  212 , by screws, and the first end portions of the board connection brackets  120 ,  240  are also fastened to the rear casings  112 ,  212  by screws. However, the above process of fastening the components may use bolts instead of screws. Further, although the second end  120   d  of the image board  120  is fastened to the board connection bracket  140  by bolts, the second end  120   d  of the image board  120  may be fastened to the board connection bracket  140  by screws. 
         [0100]    Since the size of the image boards  120 ,  220  is smaller than that of a previously used image board, the board connection brackets  140 ,  240  are used in the exemplary embodiments. However, the board connection brackets  140 ,  240  according to the exemplary embodiments may also be used when the size of the power boards  130 ,  230  is smaller than that of a power board previously used. 
         [0101]    The LCD panels  100 ,  200  are provided as an example of electronic instruments in exemplary embodiments, but exemplary embodiments may also be applied to other image apparatuses such as a light emitting diode (LED) panel, a plasma display panel (PDP), and other electronic instruments having a printed circuit board. 
         [0102]    The foregoing exemplary embodiments and advantages are merely exemplary and are not to be construed as limiting. The present teaching can be readily applied to other types of apparatuses. Also, the description of the exemplary embodiments is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.