Abstract:
A backlight assembly that is adapted for use with an image displaying flat panel includes a light guide plate assembly and one or more light sources disposed under the light guide plate assembly. An upper portion of the light guide plate assembly is overlapped by a display area of the flat panel while a lower portion is disposed under the upper portion, and includes light guiding material for redirecting sourced light as well as reflectors for also redirecting light sourced from small, light sourcing areas underneath the upper portion for redistribution into the larger area of light guiding material provided in the upper portion of the light guide plate assembly. The upper portion also has one or more light reflectors. In one embodiment, opposed ones of light sources are angled so they don&#39;t shine light directly into one another.

Description:
PRIORITY STATEMENT 
     This application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 2011-0079923, filed on Aug. 11, 2011 in the Korean Intellectual Property Office (KIPO), the contents of which application are herein incorporated by reference in its entirety. 
     BACKGROUND 
     1. Field of Disclosure 
     The present disclosure of invention relates to a backlight assembly and a display apparatus having the backlight assembly. More particularly, example embodiments in accordance with the present disclosure of invention relate to a centered-source type backlight assembly and a display apparatus having the backlight assembly. 
     2. Description of Related Technology 
     Generally, a display apparatus may include a display panel including a display area configured for displaying an image and a peripheral area in which a driving part configured for driving elements in the display area is disposed. The display apparatus may further include a backlight assembly configured for providing light to the display panel and a receiving container receiving the backlight assembly. 
     The backlight assembly may be classified into a direct-illumination type or an edge-illumination type according to a position, size and usage of the light source. 
     The backlight assembly for a conventional direct-illumination type typically includes a plurality of light sources distributed across a whole surface of the display panel, so that a manufacturing cost and a thickness of a display apparatus may increase as a result of this conventional configuration which calls for many light sources to be uniformly distributes under an entire display area (DA) of a display panel. More light sources and electrical interconnect to them is called for as the size of the display area (DA) grows. 
     By contrast, the backlight assembly for the edge-illumination type typically includes a plurality of light sources distributed across only one or more edge portions of the display panel, so that the manufacturing cost and a thickness of a display apparatus may decrease because a smaller number of light sources is called for and a smaller amount of electrical interconnect is needed. Thus, the backlight assembly for the edge-illumination type has been more used (more popular) due to its cost and device thickness advantages. 
     More specifically, the backlight assembly for the edge-illumination type typically includes a light source and a light guide plate configured for guiding the edge-received light emitted from the edge-disposed lights source to a planar major surface of the corresponding display panel. In other words, the edge-type light source is disposed in a peripheral area of the display panel to be hidden for example by a bezel surrounding the display area. Thus, the display apparatus of the edge-illumination type backlight assembly is typically forced to have a peripheral bezel having a width at least the same as or more than a width of the edge-disposed light sources. 
     Recently, a centered-source type of backlight assembly has been developed. The centered-type backlight assembly includes a light source disposed under a plurality (e.g., a stack) of light guide plates packed adjacent to each other. The stack of light guide plates guide and re-direct the center-sourced light of the centered-type backlight assembly to be more uniformly distributed to the display panel. In the centered-type backlight assembly, the light source is disposed under the display area, so that the width of the peripheral bezel may be substantially decreased if desired. 
     However, in the centered-type backlight assembly, a brightness difference may occur between the display area corresponding to where the light source is disposed and the display area corresponding to peripheral areas of the light guide plates where the light source is not disposed. A display sub-area corresponding to where the light source is disposed may be about 10 times brighter than a display sub-area corresponding to the periphery of the topmost light guide plate in the stack. The brightness difference is hard to be blocked. In addition, in the centered-type backlight assembly, a cost increases in order to prevent a hot spot from being generated in a portion corresponding to an incident surface of the light guide plate, and uniformity of the brightness decreases due to light loss between the light guide plates adjacent to each other. In addition, if the light guide plates are separately formed and spaced apart from each other, the light guide plates may be misaligned relative to one another. 
     It is to be understood that this background of the technology section is intended to provide useful background for understanding the here disclosed technology and as such, the technology background section may include ideas, concepts or recognitions that were not part of what was known or appreciated by those skilled in the pertinent art prior to corresponding invention dates of subject matter disclosed herein. 
     SUMMARY 
     Example embodiments in accordance with the present disclosure of invention provide a centered-type backlight assembly capable of minimizing light loss and capable of uniformly maintaining brightness across the display area. 
     Example embodiments in accordance with the present disclosure of invention also provide a display apparatus having the above-mentioned backlight assembly. 
     According to an example embodiment, a backlight assembly includes a light guide plate assembly (e.g., stack) and one or more light sources. The light guide plate assembly includes a first light guide part having a first side surface and a second side surface spaced apart from the first side surface in a first direction and a second light guide part disposed under the first light guide part between the first side surface and the second side surface. The light source is disposed under the first light guide part and laterally adjacent to the second light guide part. 
     In an example embodiment, the second light guide part may include a third side surface substantially parallel to the first side surface, and a fourth side surface spaced apart from the third side surface in the first direction. 
     In an example embodiment, the second light guide part may be disposed under the first light guide part and the third and fourth side surfaces of the second light guide part may be between the first side surface and the second side surface. 
     In an example embodiment, the second light guide part may be adjacent to a central area of the first light guide part. 
     In an example embodiment, the second light guide part may have a stripe shape extended in a second direction that is substantially perpendicular to the first direction. 
     In an example embodiment, the light source may be arranged substantially parallel with the third side surface. The backlight assembly may further include a reflecting member under at least one of the first and second light guide parts. The reflecting member may further include a first reflecting member disposed under the first light guide part and a second reflecting member disposed under the second light guide part. A first edge of the first reflecting member may be disposed within the groove. The backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part. The backlight assembly may further include a heat dissipation member having a receiving space receiving the light source. The light guide plate assembly may have a cross sectional ‘T’-shape. 
     In an example embodiment, the light source may form an acute angle with the third side surface. The backlight assembly may further include a reflecting member under at least one of the first and second light guide parts. The reflecting member may further include a first reflecting member disposed under the first light guide part, and a second reflecting member disposed under the second light guide part. A first edge of the first reflecting member may be disposed within the groove. The backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part. The backlight assembly may further include a heat dissipation member having a receiving space receiving the light source. The light guide plate assembly may have a cross sectional ‘T’-shape. 
     In an example embodiment, the light source may form an obtuse angle with the third side surface. The backlight assembly may further include a reflecting member under at least one of the first and second light guide parts. The reflecting member may further include a first reflecting member disposed under the first light guide part, and a second reflecting member disposed under the second light guide part. A first edge of the first reflecting member may be disposed within the groove. The backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part. The backlight assembly may further include a heat dissipation member having a receiving space receiving the light source. The light guide plate assembly may have a cross sectional ‘T’-shape. 
     In an example embodiment, the light source may be arranged substantially perpendicular to the third side surface. The backlight assembly may further include a reflecting member under at least one of the first and second light guide parts. The reflecting member may further include a first reflecting member disposed under the first light guide part, and a second reflecting member disposed under the second light guide part. A first edge of the first reflecting member may be disposed within the groove. The backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part. The backlight assembly may further include a heat dissipation member having a receiving space receiving the light source. The light guide plate assembly may have a cross sectional ‘T’-shape. 
     In an example embodiment, a lower surface of the second light guide part may have first and second inclined surfaces forming a V-shaped cross-section. An interface between the first and second inclined surfaces may form a sharp edge or a rounded edge. The backlight assembly may further include a reflecting member under at least one of the first and second light guide parts. The reflecting member may further include a first reflecting member disposed under the first light guide part, and a second reflecting member disposed under the second light guide part. A first edge of the first reflecting member may be disposed within the groove. The second reflecting member may include a first reflecting portion corresponding to the first inclined surface and a second reflecting portion corresponding to the second inclined surface. The backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part. The backlight assembly may further include a heat dissipation member having a receiving space receiving the light source. The heat dissipation member may include side surfaces and a bottom surface, and the bottom surface of the heat dissipation member including a first bottom portion corresponding to the first inclined surface and a second bottom portion corresponding to the second inclined surface. The light guide plate assembly has a cross sectional ‘T’-shape. 
     In an example embodiment, the first light guide part may be integrally formed with the second light guide part. 
     In an example embodiment, the second light guide part may be disposed under the first light guide part and adjacent to a central area between the first side surface and the second side surface. 
     In an example embodiment, the light guide plate assembly further may include a connecting portion optically connecting the spaced apart first and second light guide parts. 
     In an example embodiment, the first light guide part may have a first width along the first direction, the second light guide part may have a second width smaller than the first width along the first direction. The connecting portion may have a third width smaller than the second width along the first direction. The first and second light guide parts and the connecting portion may form a groove into which a reflective layer fits. 
     In an example embodiment, the backlight assembly may further include a light leakage masking/controlling pattern disposed between the first reflecting member and the second light guide part to prevent or control the formation of backlighting hot spots. 
     In an example embodiment, the connecting portion may be composed of an adhesive material having a substantially same refractive index as those of the first and second light guide parts. 
     According to an example embodiment, a display apparatus includes a backlight assembly and a display panel. The backlight assembly generates light. The backlight assembly includes a light guide plate assembly and a light source. The light guide plate assembly includes a first light guide part having a first side surface and a second side surface spaced apart from the first side surface in a first direction and a second light guide part disposed under the first light guide part between the first side surface and the second side surface. The light source is disposed under the first light guide part and laterally adjacent to the second light guide part. The display panel is disposed on the backlight assembly to display an image using the light. 
     According to the present teachings, a backlight assembly is provided in which a small-area light source unit is overlapped by the larger display area of an image displaying panel. Since the light source unit is not extended from an edge of the display area, a size of a bezel area surrounding the display area may be decreased. 
     In addition, the light source unit is disposed under a first reflecting member, so that undesired leakage of light rays and formation of brightness hot spots may be prevented. 
     In addition, a shape of a second light guide part of a light guide plate is changed, so that light may be efficiently guided to a first light guide part of the light guide plate with reduced loss of light energy. 
     Thus, formation of a bright line or a dark line shown on a display apparatus may be prevented from being substantially generated while efficiency is increased. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other features and advantages of the present teachings will become more apparent by describing in detailed example embodiments thereof with reference to the accompanying drawings, in which: 
         FIG. 1  is an exploded perspective view illustrating a display apparatus according to an example embodiment of the present disclosure; 
         FIG. 2  is a cross-sectional view illustrating the display apparatus along a line I-I′ of  FIG. 1 ; 
         FIG. 3  is a cross-sectional view illustrating a backlight assembly according to another example embodiment; 
         FIG. 4  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 5  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 6  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment of the present invention; 
         FIG. 7  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 8  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 9  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 10  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment of the present invention; 
         FIG. 11  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; 
         FIG. 12  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment; and 
         FIG. 13  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
         FIG. 14  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment of the present teachings. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, the present disclosure of invention will be provided in detail with reference to the accompanying drawings. 
       FIG. 1  is an exploded perspective view illustrating a display apparatus according to an example embodiment in accordance with the present disclosure of invention.  FIG. 2  is a cross-sectional view illustrating a display apparatus along a line I-I′ of  FIG. 1 . 
     Referring to  FIG. 1  and  FIG. 2 , a display apparatus  1000  according to the present example embodiment includes a display panel  100 , a backlight assembly  200  and a receiving container. 
     The display panel  100  includes a first display substrate  110 , a second display substrate  120  disposed opposite to and spaced apart from the first substrate  110  and a liquid crystal layer (not shown) disposed between the first display substrate  110  and the second display substrate  120 . The display panel  100  includes a display area DA configured for displaying an image and a peripheral area PA in which a driving part is provided and configured for driving switching elements in the display area DA. The display area DA may be an area in which the first display substrate  110  overlaps with the second display substrate  120 . 
     A plurality of pixel areas P each including a respective portion of a gate line, a respective portion of a data line crossing with the gate line, a switching element connected to the gate line and the data line portions and a pixel electrode connected to the switching element is formed in the display area DA. A data driving part configured for providing driving signals to respective ones of the data lines is mounted in the peripheral area PA. Alternatively, a gate driving part configured for providing driving signals to respective ones of the gate lines may be further mounted in the peripheral area PA. 
     The backlight assembly  200  is disposed under the display panel  100 , and provides light to the display panel  100 . The backlight assembly  200  includes a light guide plate assembly  210 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240 , an optical member  250  and a heat dissipation member  920 . 
     The light guide plate assembly  210  includes a first light guide part  211 , a second light guide part  213  and a connecting portion  215  connecting the first and second light guide parts  211  and  213 . 
     The first light guide part  211  is disposed under the display panel  100 , and overlaps with the display area DA. The first light guide part  211  has a rectangular prism shape having a first width W 1  along the first direction D 1  and a second width W 2  along the second direction D 2  crossing the first direction D 1  in a top plan view. The thickness of the prismatic first light guide part  211  is not explicitly denoted, but is understood to be measured along a third axis or direction D 3  which is orthogonal to both of the first and second axes, D 1  and D 2 . 
     The thickness of the prismatic first light guide part  211  causes the latter to have a first side surface  212   a , a second side surface  212   b  opposite to the first side surface  212   a , a third side surface  212   c  connecting the first and second side surfaces  212   a ,  212   b , and a fourth side surface  212   d  opposite to the third side surface  212   c . The first side surface  212   a  is spaced apart from the second side surface  212   b  by the first width W 1  in the first direction D 1 . The third side surface  212   c  is spaced apart from the fourth side surface  212   d  by the second width W 2  smaller than the first width W 1  in the second direction D 2 . 
     The light guide plate assembly  210  further includes the above-mentioned second light guide part  213  which is smaller than and is disposed under the first light guide part  211  adjacent to a central portion between the first side surface  212   a  and a second side surface  212   b  of the first light guide part  211 . The second light guide part  213  also has rectangular prism shape having a third width W 3  along the first direction D 1  and a fourth width W 4  along the second direction D 2  as seen in a top plan view. 
     The second light guide part  213  may have a respective first side surface  214   a  substantially parallel to the first side surface  212   a  of the first light guide part  211 , a second side surface  214   b  spaced opposingly apart from and facing the first side surface  214   a , a third side surface  214   c  connecting the first side surface  214   a  with the second side surface  214   b , and a fourth side surface  214   d  facing the third side surface  214   c . The first side surface  214   a  of the second light guide part  213  may be spaced apart from the second side surface  214   b  of the second light guide part  213  by a third width W 3  smaller than the first width W 1  in the first direction D 1 . The third side surface  214   c  may be spaced apart from the second side surface  214   d  by a fourth width W 4  that is substantially the same as the second width W 2  in the second direction D 2 . Alternatively, the fourth width W 4  may be smaller than the second width W 2 . 
     The light guide plate assembly  210  further includes the above-mentioned connecting portion  215  which is operatively extended from the bottom of the first light guide part  211  to the top of the second light guide part  213 . For example, in one embodiment, the first light guide part  211 , the second light guide part  213  and the connecting portion  215  are monolithically integrally formed with each other. Alternatively, the connecting portion  215  may be monolithically integrally formed with one but not the other of the first and second light guide parts  211  and  213 . The connecting portion  215  has a fifth width W 5  along the first direction D 1  smaller than the third width W 3 . 
     Thus, a lower surface of the first light guide part  211 , an upper surface of the second light guide part  213  facing the lower surface of the first light guide  211  and a side surface of the connecting portion  215  define a fillable groove, G having substantially a ‘C’-shape in the cross sectional view of  FIG. 2 . 
     The light guide plate assembly  210  may be seen overall as having a cross sectional ‘T’-shape in the cross sectional view of  FIG. 2  where the ‘T’-shape is formed by the combination of the first light guide part  211 , the second light guide part  213  and the connecting portion  215 . The light guide plate assembly  210  functions to guide light rays sourced from the light source unit  220  to the display panel  100  via the second light guide part  213 , the connecting portion  215  and the first light guide part  211  in said recited order. For example, the light guide plate assembly  210  includes the first and second light guide parts  211  and  213  that are separated. Alternatively, the first light guide plate  211  may be integrally formed with the second light guide plate  213 . The light guide plate assembly  210  may be formed through injection molding to form a T-shape. 
     The light source unit  220  is disposed under a central strip portion of the first light guide part  211  and laterally adjacent to the second light guide part  213 . For example, the light source unit  220  is disposed under the first light guide part  211  in an area overlapping with a central strip of the display area DA. Although the light source unit  220  is disposed in the display area DA, the light source unit  220  does not directly provide its sourced light rays to the display panel  100 , but instead has its light indirectly coupled to the display panel  100  by way of the second light guide part  213  and then the first light guide part  211  which is disposed over it and coupled thereto by connecting portion  215 . Since the original light source  220  is disposed such that it is difficult for its sourced light to leave without passing through the wider and overlying display panel  100 , energy-wasting leakage of light around the display area DA is decreased if not altogether prevented. 
     The light source unit  220  in combination with the light guide plate assembly  210  may uniformly provide essentially all of its sourced light to the display panel  100 . In addition, the light source unit  220  lies under rather than laterally adjacent to the display area DA, so that additional bezel area for hiding the light source unit  220  is not needed. Thus, a width of the bezel area of the display apparatus  1000  may be decreased relative to a display apparatus (not shown) which relies on edge lighting. 
     The light source unit  220  includes at least one light source  221  and a corresponding at least one printed circuit board (PCB)  222 . 
     The light source  221  is mounted on the PCB  222  and electrically connected to the PCB  222 . In one embodiment, respective and opposed pairs of light sources  221  and PCB&#39;s  222  are disposed adjacent to the first and second side surfaces  214   a  and  214   b  respectively of the second light guide part  213  in parallel. A respective emitting surface  221   a  of the respective light source  221  faces its respective one of the first and second side surfaces  214   a  and  214   b  of the second light guide part  213 . The light source  221  may include a light emitting diode (LED), a cold cathode fluorescent lamp (CCFL), etc. 
     The first bottom reflecting member  230  is disposed under the first light guide part  211  in the areas where the connecting portion  215  is not formed ( 230  fills the groove G), and it thereby substantially covers the bottom surface of the first light guide part  211 . The first reflecting member  230  extends to be disposed between the first light guide part  211  and the second light guide part  213  as well as the light source unit  220 . Therefore, the only light which enters from the bottom of the first light guide part  211  is the controlled light of the light source unit  220 . Stray light is prevented from entering or leaving in the areas where the first reflecting member  230  is provided. Interior edges of the first reflecting member  230  are inserted into the groove G and fixed to the groove G. Thus, only the connecting portion  215  extends through the first reflecting member  230  to couple light into or out from the first light guide part  211 . The connecting portion  215  may have a thickness larger than that of the first reflecting member  230 . The first reflecting member  230  reflects light upwardly into the interior of the first light guide part  211 . 
     The second reflecting member  240  is disposed under the second light guide part  213  and the light source(s)  211 . For example, the second reflecting member  240  extends from the light source unit  220  facing the first side surface  214   a  of the second light guide part  213  to the light source unit  220  facing the second side surface  214   b  of the second light guide part  213 . Thus, the second reflecting member  240  may have a sixth width W 6  larger than the third width W 3  in the first direction D 1 . The second reflecting member  240  reflects light upwardly into the interior of the second light guide part  211 . 
     The first and second reflecting members may include highly reflective metal materials such as silver (Ag) for example. 
     More specifically, the light provided from the light source  221  may be reflected by the second reflecting member  240  to thereafter be provided to the display panel  100  via the second light guide part  213 , the connecting portion  215  and the first light guide part  211 , and/or may it be directly provided to the display panel  100  via the second light guide part  213 , the connecting portion  215  and the first light guide part  211 . 
     The optical member  250  is disposed between the display panel  100  and the light guide plate  210 . The optical member  250  diffuses, concentrates and uniformizes the light guided to the display panel  100  from the light guide plate  210 . 
     In addition, although not shown in the figures, a reflecting member may be further disposed on the first, second, third and fourth side surfaces  212   a ,  212   b ,  212   c  and  212   d  of the first light guide part  211  and the third and fourth side surfaces  214   c  and  214   d  of the second light guide part  213 . 
     The heat dissipation (heat sinking) member  900  includes side surfaces  910  and a bottom surface  920  connecting the side surfaces  910 . The side surfaces  910  extend from the bottom surface  920  in a perpendicular direction with respect to the bottom surface  920 . In one embodiment, the heat dissipation member  900  includes only side surfaces  910  corresponding to the first and second side surfaces  214   a  and  214   b  of the second light guide part  213 , and thus the heat dissipation member  900  may be slidingly combined with the light source unit  220 , the second light guide part  213  and the second reflecting member  240  in order to cover the light source unit  220 , the second light guide part  213  and the second reflecting member  240 . 
     Alternatively, the heat dissipation member  900  includes side surfaces  910  corresponding to the first, second, third and fourth side surfaces  214   a ,  214   b ,  214   c  and  214   d  of the second light guide part  213 , and thus the heat dissipation member  900  may be combined from underneath with the light source unit  220 , the second light guide part  213  and the second reflecting member  240  in order to cover the light source unit  220 , the second light guide part  213  and the second reflecting member  240 . 
     The heat dissipation member  900  includes a heat conductive metal material, and thus may easily conduct and dissipate away the concentrated heat generated from the light source unit  220 . 
     The receiving container may further include a top chassis  10  and a bottom chassis  20 . The top chassis  10  is combined with the bottom chassis  20 , and receives the display panel  100  and the backlight assembly  200 . 
     The top chassis  10  includes an opening  11  exposing the display area DA. The bottom chassis  20  includes first side surfaces  21 , a first bottom surface  22  connecting the first side surfaces  21  with each other, second side surfaces  23  substantially parallel to the first side surfaces  21 , and a second bottom surface  24  connecting the second side surfaces  23  with each other. 
     The first side surfaces  21  extend from the first bottom surface  22  in a direction substantially perpendicular to the first bottom surface  22  to form a first receiving space. The second light guide part  213  of the light guide plate  210 , the light source unit  220  and the second reflecting member  240  are received in the first receiving space. 
     The second bottom surface  24  extends from the first side surfaces  21  in a direction substantially parallel to the first bottom surface  22 . The second bottom surface  24  does not overlap with the first bottom surface  22 . 
     The second side surfaces  23  extend from the second bottom surface  24  in a direction substantially parallel to the first side surfaces  21  to form a second receiving space. The first light guide part  211  (upper portion) of the light guide plate  210 , the first reflecting member  230  and the optical member  250  are received in the second receiving space. 
     According to this first described, example embodiment, the light source unit  220  is disposed under the first light guide part  211 , so that the size of the bezel of the display apparatus  1000  may be decreased. 
     In addition, the light source unit  220  is disposed under the first reflecting member  230 , so that a light leakage may be prevented. 
       FIG. 3  is a cross-sectional view illustrating a backlight assembly according to another example embodiment in accordance with the present disclosure of invention. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a connecting portion  315 . Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 3 , a light guide plate assembly  310  of a backlight assembly according to the present example embodiment includes a first light guide part  211 , a second light guide part  213  and a connecting portion  315  different from the connecting portion  215  of the above, first-described embodiment. For example, the light guide plate assembly  310  includes the first and second light guide parts  211  and  213  that are separated. Alternatively, the first light guide plate  211  may be integrally formed with the second light guide plate  213 . The light guide plate assembly  310  may be formed through injection molding to form a T-shape. 
     Here, the connecting portion  315  is a cured optical adhesive material having substantially the same refractive index as those of the first and second light guide part  211  and  213 . The connecting portion  315  is disposed between the first light guide part  211  and the second light guide part  213 , and adheres the second light guide part  213  to the first light guide part  211 . For example, the first light guide part  211  is separately formed from the second light guide part  213 , and adheres to the second light guide part  213  by the cured connecting portion  315 . The connecting portion  315  may have a fifth width along the first direction D 1  smaller than the third width. 
     The connecting portion  315  may fix the second light guide part  213  to the first light guide part  211 . 
     Thus, the light guide plate  310  may provide the light provided from the light source unit  220  disposed under the first light guide part  211  and adjacent to the second light guide part  213  to the display panel  100 . 
     According to the present example embodiment, the first and second light guide parts  211  and  213  separately formed from each other are adhered to each other by the connecting portion  315 , so that the light guide plate  210  may have a “T”-shape without using an injection molding for forming the “T”-shape as a unitary structure. 
       FIG. 4  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for the light guide plates. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 4 , a light guide plate assembly  410  of a backlight assembly according to the example embodiment includes a first light guide part  411 , a second light guide part  413 , a first connecting portion  415 , a second connecting portion  416  and a third reflecting member  417 . For example, the light guide plate assembly  410  includes the first and second light guide parts  411  and  413  that are separated. Alternatively, the first light guide plate  411  may be integrally formed with the second light guide plate  413 . The light guide plate assembly  410  may be formed through injection molding to form a T-shape. 
     The first light guide part  411  is disposed under the display panel  100 , and overlaps the display area DA. The first light guide part  411  includes a first sub-light guide part  411   a  and a second sub-light guide part  411   b  separately formed from the first sub-light guide part  411   a  and being mirror symmetric with respect to the first sub-light guide part  411   a.    
     The first sub-light guide part  411   a  includes a first side surface  412   a  and a second side surface  412   b  opposite to the first side surface  412   a . The second sub-light guide part  411   b  includes a third side surface  412   c  facing the second side surface  412   b  and a fourth side surface  412   d  opposite to the third side surface  412   d.    
     The first side surface  412   a  of the first sub-light guide part  411   a  may be spaced apart from the fourth side surface  412   d  of the second sub-light guide part  411   b  by a first width W 1  in a first direction D 1 . 
     The second light guide part  413  is disposed under the first light guide part  411 , and overlaps with the first sub-light guide part  411   a  adjacent to the second side surface  412   b  of the first sub-light guide part  411   a  and the second sub-light guide part  411   b  adjacent to the third side surface  412   c  of the second sub-light guide part  411   b . The second light guide part  413  includes a third sub-light guide part  413   a  disposed under the first sub-light guide part  411   a  and a fourth sub-light guide part  413   b  separately formed from the third sub-light guide part  413   a , being mirror symmetric to the third sub-light guide part  413   a , and disposed under the second sub-light guide part  411   b.    
     The third sub-light guide part  413   a  includes a first side surface  414   a  and a second side surface  414   b  opposite to the first side surface  414   a . The fourth sub-light guide part  413   b  includes a third side surface  414   c  facing the second side surface  414   b  and a fourth side surface  414   d  opposite to the third side surface  414   c.    
     The first side surface  414   a  of the third sub-light guide part  413   a  may be spaced apart from the fourth side surface  414   d  of the fourth sub-light guide part  413   b  by a third width W 3  smaller than the first width W 1  in the first direction D 1  so as to dispose a light source unit  220  in a display area DA of a display panel  100 . 
     The first connecting portion  415  extends from the first sub-light guide part  411   a , and the third sub-light guide part  413   a  extends from the first connecting portion  415 . For example, the first sub-light guide part  411   a , the third sub-light guide part  413   a  and the first connecting portion  415  are integrally formed with each other as a monolithic structure. 
     The second connecting portion  416  extends from the second sub-light guide part  411   b , and the fourth sub-light guide part  413   b  extends from the second connecting portion  415 . For example, the second sub-light guide part  411   b , the fourth sub-light guide part  413   b  and the second connecting portion  416  are integrally formed as a monolithic structure. 
     Each of the first connecting portion  415  and the second connecting portion  416  has a fifth width W 5  in the first direction D 1 . 
     Thus, a bottom surface of the first sub-light guide part  411   a , a upper surface of the third sub-light guide part  413   a  facing the bottom surface of the first sub-light guide part  411   a  and a side surface of the first connecting portion  415  form a first groove G 1  of a ‘C’-shape. In addition, a bottom surface of the second sub-light guide part  411   b , a upper surface of the fourth sub-light guide part  413   b  facing the bottom surface of the second sub-light guide part  411   b  and a side surface of the second connecting portion  415  form a second groove G 2  of a ‘C’-shape. 
     The third reflecting member  417  is disposed between the first sub-light guide part  411   a , the first connecting portion  415  and the third sub-light guide part  413   a  and the second sub-light guide part  411   b , the second connecting portion  416  and the fourth sub-light guide part  413   b , which are mirror symmetric to each other. 
     Optical adhesives having a substantially same refractive index as those of the first and second light guide part  411  and  413  may be disposed between the third reflecting member  417  and each of the first sub-light guide part  411   a , the first connecting portion  415  and the third sub-light guide part  413   a , and between the third reflecting member  417  and each of the second sub-light guide part  411   b , the second connecting portion  416  and the fourth sub-light guide part  413   b.    
     A sum of widths in the first direction D 1  of the first and second connecting portions  415  and  416  and a width in the first direction D 1  of the third reflecting member  417  is smaller than the second width. 
     According to the present example embodiment, the third reflecting member  417  is disposed between the first and third sub-light guide parts  411   a  and  413   a  where the latter are integrally formed with each other and the second and fourth sub-light guide parts  411   b  and  413   b  where the latter are integrally formed with each other, so that the light emitted from the light source  221  to be reflected by the second reflecting member  240  may be symmetrically provided to respective halves of the first light guide part  411  by the third reflecting member  417 . 
       FIG. 5  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment of  FIG. 5  is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 4  except for the formation of the first and second connecting portions  515 . Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 4  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 5 , a light guide plate assembly  510  of a backlight assembly according to the present example embodiment includes a first light guide part  411 , a second light guide part  413 , a connecting portion  515  and a third reflecting member  417 . For example, the light guide plate assembly  510  includes the first and second light guide parts  411  and  413  that are separated. Alternatively, the first light guide plate  411  may be integrally formed with the second light guide plate  413 . The light guide plate assembly  510  may be formed through injection molding to form a T-shape. 
     The connecting portion  515  is formed by hardening (curing) an optical adhesive having a substantially same refractive index as those of the first and second light guide parts  411  and  413 . The mirror symmetrical connecting portions  515  are disposed between the first sub light guide portion  411   a  and the third sub light guide portion  413   a  and between the second sub light guide portion  411   b  and the fourth sub light guide portion  413   b . Thus, the connecting portion  515  adheres the third sub light guide portion  413   a  to the first sub light guide portion  411   a , and adheres the fourth sub light guide portion  413   b  to the second light guide part  411   b.    
     According to the present example embodiment, the first and third sub-light guide parts  411   a  and  413   a  and the second and fourth sub-light guide parts  411   b  and  411   d  can be separately formed from each other and thereafter adhered to each other by the connecting portion  515 , so that the light guide plate  211  may have a desire shape without using an injection molding for forming the mirror-symmetrical halves of the “T”-shape as a monolithically integrated unitary structure. 
       FIG. 6  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a variation of geometry of the light source unit and the receiving container. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 6 , a light source unit  320  of a backlight assembly according to the present example embodiment is disposed under the first light guide part  211 . The light source unit  320  is disposed under the first light guide part  211  overlapping with a central portion of the display area DA, so that the light source unit  320  is overlapped by the larger surface area of the display area DA. The light source unit  320  includes a light source  321  and a printed circuit board PCB  322 . 
     The light source  321  is mounted on the PCB  322  to be electrically connected to the PCB  322 . The light source  321  and the PCB  322  have an acute angle θ (less than 90°) with respect to a second reflecting member  240 . For example, first ends of the light source  321  and the PCB  322  adjacent to the first light guide part  211  are disposed more adjacent to the second light guide part  213  than second ends of the light source  321  and the PCB  322  far from the first light guide part  211 . Thus, a light emitting surface  321   a  of the light source  321  is not substantially parallel to each of first and second side surfaces  214   a  and  214   b  of the second light guide part  213 . 
     The heat dissipation member  900 A of the display apparatus of  FIG. 6  includes side surfaces  910 A and a bottom surface  920 A connecting the side surfaces  910 A with each other. The side surfaces  910 A have an acute angle θ with respect to the bottom surface  920 A. 
     In one embodiment, the heat dissipation member  900 A includes only side surfaces  910 A corresponding to the first and second side surfaces  214   a  and  214   b  of the second light guide part  213 , and thus may slidingly combined with the light source unit  320 , the second light guide part  213  and the second reflecting member  241  in the second direction D 2 . 
     Alternatively, the heat dissipation member  900 A may include side surfaces  910 A corresponding to the first, second, third and fourth side surfaces  214   a ,  214   b ,  214   c  and  214   d  of the second light guide part  213 , and thus may be combined in sections (not individually shown) with the light source unit  320 , the second light guide part  213  and the second reflecting member  240 . 
     The heat dissipation member  900 A includes a metal material, and thus may easily dissipate the heat generated from the light source unit  320 . 
     In the present example embodiment, the light guide plate is the light guide plate according to the previous example embodiment of  FIG. 1 , but the light guide plate may be the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example embodiment, the light source  321  is inclined with respect to the first and second side surfaces  214   a  and  214   b  of the second light guide part  213  by a certain angle θ, so that the light emitted from the light source  321  may be efficiently provided to the first light guide part  211  via the second reflecting member  240  and the second light guide part  213 . Thus, the light emitted from the light source  321  is prevented from being provided straight into the opposed other light source facing the light source  321 , so that a loss of light may be decreased. 
       FIG. 7  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment of  FIG. 7  is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a geometry of the light source unit and receiving container. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 7 , a light source unit  420  of a backlight assembly according to the present example embodiment is disposed under the first light guide part  211 . For example, the light source unit  420  is disposed under the first light guide part  211  overlapping with the display area DA, so that the light source unit  420  is overlapped by the large area of the display area DA. The light source unit  420  includes a light source  421  and a printed circuit board PCB  422 . 
     The light source  421  is mounted on the PCB  422  to be electrically connected to the PCB  422 . The light source  421  and the PCB  422  have an obtuse angle θ (greater than 90°) with respect to a second reflecting member  240 . For example, first ends of the light source  421  and the PCB  422  adjacent to the first light guide part  211  are disposed more adjacent to the second light guide part  213  than second ends of the light source  421  and the PCB  422  far from the first light guide part  211 . 
     A heat dissipation member  900 B of the display apparatus of  FIG. 7  includes side surfaces  910 B and a bottom surface  920 B connecting the side surfaces  910 B with each other. The side surfaces  910 B have an obtuse angle θ with respect to the bottom surface  920 B. 
     For example, the heat dissipation member  900 B includes only side surfaces  900 B corresponding to the first and second side surfaces  214   a  and  214   b  of the second light guide part  213 , and thus may be slidingly combined with the backlight assembly in the second direction D 2 . Thus, the heat dissipation member  900 B may cover the light source unit  420 , the second light guide part  213  and the second reflecting member  240 . 
     Alternatively, the heat dissipation member  900 B includes side surfaces  910 B corresponding to the first, second, third and fourth side surfaces  214   a ,  214   b ,  214   c  and  214   d  of the second light guide part  213 , and thus may be combined with the backlight assembly. Thus, the heat dissipation member  900 B may cover the light source unit  420 , the second light guide part  213  and the second reflecting member  240 . 
     The heat dissipation member  900 B includes a metal material, and thus may easily dissipate heat generated from the light source unit  420 . 
     In the present example embodiment, the light guide plate is the light guide plate according to the previous example embodiment of  FIG. 1 , but the light guide plate may be the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example embodiment, the light source  421  is inclined with respect to the first and second side surfaces  214   a  and  214   b  of the second light guide part  213  by a certain angle, so that the light emitted from the light source  421  may be reflected and redirected by the bottom of the first reflecting members  230  as well as by the top of the second reflecting member  240  to be provided to the first light guide part  211  via the second light guide part  213 , or may be provided to the first light guide part  211  via the second light guide part  213 . Thus, the light emitted from the light source  421  is prevented from providing light straight through to another light source facing the first light source  421 , so that a loss of light due to absorption in the facing source may be decreased. 
       FIG. 8  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for inclusion of a light leakage masking/controlling pattern. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 8 , a backlight assembly according to the present example embodiment includes a light guide plate  210 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240 , an optical member  250  and a light leakage masking/controlling pattern  260 . 
     In one embodiment, a black printing or a gray printing is performed on the bottom surface of the first reflecting member  230 , so that the light leakage masking/controlling pattern  260  is formed on the bottom surface of the first reflecting member  230 . 
     The light leakage masking/controlling pattern  260  is disposed between the first reflecting member  230  and the second light guide part  213 . Brightness of the light in the second light guide part  213  adjacent to the light source  221  of the light source unit  220  is larger than the brightness of the light in the second light guide part  213  far from the light source  221 , so that undesired pathways of strong light leakage may be generated in the second light guide part  213  adjacent to the light source  221 . Thus, the light leakage masking/controlling pattern  260  is disposed over the second light guide part  213  adjacent to the light source  221  to limit of control the light passing through from the second light guide part  213  upward into the first light guide part  211 . 
     In the present example embodiment, the light guide plate is the light guide plate according to the previous example embodiment of  FIG. 1 , but the light guide plate may be the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example, the light leakage masking/controlling pattern  260  is disposed over the second light guide part  213  adjacent to the light source  221 , so that the undesired light leakage may be prevented or controlled in the second light guide part  213  adjacent to the light source  221 . 
       FIG. 9  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for the form of the light leakage masking/controlling pattern  260 A. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 9 , a backlight assembly according to the present example embodiment includes a light guide plate  210 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240 , an optical member  250  and a light leakage masking/controlling pattern  260 A. 
     A black printing or a gray printing is performed on the bottom surface of the first reflecting member  230 , so that the light leakage masking/controlling pattern  260 A is formed on the bottom surface of the first reflecting member  230 . 
     The light leakage preventing pattern  260 A is disposed between the first reflecting member  230  and each of the light source  221  of the light source unit  220  and the second light guide part  213 . Brightness of the light in the light source  221  and the second light guide part  213  adjacent to the light source  221  is larger than the brightness of the light in the second light guide part  213  far from the light source  221 , so that the light leakage may be generated in the light source  221  and the second light guide part  213  adjacent to the light source  221 . Thus, the light leakage masking/controlling pattern  260 A is disposed over the light source  221  and the second light guide part  213  adjacent to the light source  221 . 
     In the present example embodiment, the light guide plate is the light guide plate according to the previous example embodiment of  FIG. 1 , but the light guide plate may be the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example, the light leakage masking/controlling pattern  260 A is disposed over the light source  221  and the second light guide part  213  adjacent to the light source  221 , so that undesired light leakage may be prevented or limited in the areas corresponding to the light source  221  and the second light guide part  213  adjacent to the light source  221 . 
       FIG. 10  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for the provision of a second light guide part  613  and a corresponding connecting portion. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 10 , a backlight assembly according to the present example embodiment includes a light guide plate assembly  610 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240  and an optical member  250 . 
     The light guide plate assembly  610  includes a first light guide part  211  and a second light guide part  613 . For example, the light guide plate assembly  610  includes the first and second light guide parts  211  and  613  that are separated. Alternatively, the first light guide plate  211  may be integrally formed with the second light guide plate  613 . The light guide plate assembly  610  may be formed through injection molding to form a T-shape. 
     The second light guide part  613  is disposed under the first light guide part  211  adjacent to a center between a first side surface  212   a  and a second side surface  212   b  of the first light guide part  211 . The second light guide part  613  has a generally rectangular shape having a third width W 3  of a first direction D 1  and a fourth width W 4  of a second direction D 2  on a top plan view. 
     More specifically, the second light guide part  613  may have a somewhat trapezoidal upper part in its cross section, where the latter includes a first side surface  614   a , a second side surface  614   b  facing the first side surface  614   a , a first inclined surface  614   e  extending from the first side surface  614   a  and connected to a bottom surface of the first light guide part  211  and a second inclined surface  614   f  facing the first inclined surface  614   e , extending from the second side surface  614   b , and connected to the bottom surface of the first light guide part  211 . The first inclined surface  614   e  has an acute angle with respect to the bottom surface of the first light guide part  211  and an obtuse angle with respect to the first side surface  614   a  of the second light guide part  613 . The second inclined surface  615   f  has an acute angle with respect to the bottom surface of the first light guide part  211  and an obtuse angle with respect to the second side surface  614   b  of the second light guide part  613 . The first side surface  614   a  of the second light guide part  613  may be spaced apart from the second side surface  614   b  of the second light guide part  613  in the first direction D 1  by the third width W 3  smaller than a first width W 1  by which a first side surface  212   a  of the first light guide part  211  is spaced apart from the second side surface  212   b  of the first light guide part  211  in the first direction D 1 . 
     The bottom surface of the first light guide part  211  and the first inclined surface  614   e  form a groove G having a “V”-shape in a cross-sectional view. A portion at which the bottom surface of the first light guide part  211  meets the first inclined surface  614   e  may be sharp or rounded. 
     The first edge of the first reflecting member  230  is inserted into the groove G and fixed to the groove G. The first edge of the first reflecting member  230  is spaced apart from an apex g of the groove G by a certain space. 
     The display apparatus 4000 may further include a light leakage preventing pattern (not shown) formed on a bottom of the first reflecting member  230 , using a black printing or a gray printing. 
     According to the present example embodiment, the groove G may have a “V”-shape, the light guide plate  610  may be easily formed by using an injection molding. 
     In addition, according to the present example embodiment, the groove G is formed in a “V”-shape, a length of the apex g of the groove G is smaller than a length of the side surface of the connecting portion  215  of  FIG. 1 . Thus, the light emitted from the light source  221  may be prevented from being scattered by the apex g. 
       FIG. 11  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a second light guide part and a connecting portion. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 11 , a backlight assembly according to the present example embodiment includes a light guide plate  710 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240  and an optical member  250 . 
     The light guide plate  710  includes a first light guide part  211  and a second light guide part  713 . For example, the light guide plate assembly  710  includes the first and second light guide parts  211  and  713  that are separated. Alternatively, the first light guide plate  211  may be integrally formed with the second light guide plate  713 . The light guide plate assembly  710  may be formed through injection molding to form a T-shape. 
     The second light guide part  713  is disposed under the first light guide part  211  adjacent to a center between the first side surface  212   a  and the second side surface  212   b  of the first light guide part  211 . The second light guide part  713  has a generally rectangular shape having a third width W 3  of a first direction D 1  and a width W 4  of a second direction D 2  in a plan view. 
     The second light guide part  713  may have a curve-wise tapered upper portion in its cross section where the latter includes a first side surface  714   a  and a second side surface  714   b  facing the first side surface  714   b , a first convex surface  714   e  extending from the first side surface  714   a , connected to a bottom surface of the first light guide part  211 , and protruding toward the bottom surface of the first light guide part  211  and a second convex surface  714   f  facing the first convex surface  714   e , extending from the second side surface  714   b , connected to the bottom surface of the first light guide part  211 , and protruding toward the bottom surface of the first light guide part  211 . The first side surface  714   a  may be spaced apart from the second side surface  714   b  in the first direction D 1  by the third width W 3  smaller than a first width W 1  by which the first side surface  212   a  of the first light guide part  211  is spaced apart from the second side surface  212   b  of the first light guide part  211  in the first direction D 1 . 
     A first end of the first convex surface  714   e  connected to the bottom surface of the first light guide part  211  may be spaced apart from a first end of the second convex surface  714   f  connected to the bottom surface of the first light guide part  211  in the first direction D 1  by a fifth width W 5  smaller than the third width W 3 . 
     The bottom surface of the first light guide part  211  and the first convex surface  714   e  form a groove G of a ‘V’-shape in a cross-sectional view. A portion at which the bottom surface of the first light guide part  211  meets the first inclined surface  714   e  may be sharp or round. 
     A first edge of the first reflecting member  230  is inserted to the groove G to be fixed to the groove G. The first edge of the first reflecting member  230  is spaced apart from the apex g of the groove G by a certain space. 
     The display apparatus of  FIG. 11  may further include a light leakage preventing pattern (not shown) formed on a bottom of the first reflecting member  230 , using a black printing or a gray printing. 
     According to the present example embodiment, the groove G may have a “V”-shape, the light guide plate  610  may be easily formed by using an injection molding. 
     In addition, according to the present example embodiment, the groove G is formed in a “V”-shape, a length of the apex g of the groove G is smaller than a length of the side surface of the connecting portion  215  of  FIG. 1 . Thus, the light emitted from the light source  221  may be prevented from being scattered by the apex g. 
       FIG. 12  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment. 
     A backlight assembly according to the present example embodiment is substantially the same as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a second light guide part, a second reflecting member and a receiving container. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 12 , a backlight assembly according to the present example embodiment includes a light guide plate  810 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240 A and an optical member  250 . 
     The light guide plate  810  includes a first light guide part  211 , a second light guide part  813  and a connecting portion  215 . For example, the light guide plate assembly  810  includes the first and second light guide parts  211  and  813  that are separated. Alternatively, the first light guide plate  211  may be integrally formed with the second light guide plate  813 . The light guide plate assembly  810  may be formed through injection molding to form a T-shape. 
     The second light guide part  813  is disposed under the first light guide part  211  adjacent to a center between a first side surface  212   a  and a second side surface  212   b . The second light guide part  813  has a generally rectangular shape having a third width W 3  of a first direction D 1  and a fourth width W 4  along the second direction D 2  in a top plan view. 
     The second light guide part  813  may include a first side surface  814   a , a second side surface  814   b  facing the first side surface  814   a , a first inclined surface  814   e  extending from a first end of the first side surface  814   a  far from the first light guide part  211  and having an acute angle θ with respect to the first side surface  814   a  and a second inclined surface  814   f  extending from the first inclined surface  814   e , connecting the first end of the first side surface  814   a  far from the first light guide part  211  with a first end of the second side surface  814   b  far from the first light guide part  811 , and having an acute angle θ with respect to the second side surface  814   b.    
     Thus, a bottom surface of the second light guide part  813  is not flat but rather has a ‘V’-shape formed by the first and second inclined surfaces  814   e  and  814   f  in a cross-sectional view. A portion at which the first inclined surface  814   e  meets the second inclined surface  814   f  may be sharp or rounded. 
     The first side surface  814   a  may be spaced apart from the second side surface  814   b  in the first direction D 1  by the third width W 3  smaller than the first width W 1 . 
     The second reflecting member  240 A is disposed under the second light guide part  213  and the light source unit  220 . The second reflecting member  240 A includes a first reflecting portion  241  corresponding to the first inclined surface  814   e  and a second reflecting portion  242  corresponding to the second inclined surface  814   f . The first and second reflecting portions  241  and  242  have acute angles θ with respect to a printed circuit board (PCB)  222  of the light source unit  220  parallel to the first and second side surfaces  814   a  and  814   b  of the second light guide part  813 . The first reflecting portion  241  extends from the first inclined surface  814   e  to the light source unit  220  adjacent to the first side surface  814   a  of the second light guide part  813 , and the second reflecting portion  242  extends from the second inclined surface  814   f  to the light source unit  220  adjacent to the second side surface  814   b  of the second light guide part  813 . 
     The second reflecting member  240 A may have a six width W 6  larger than the third width W 3 . The second reflecting member  240 A reflects the light to the second light guide part  811 . 
     The heat dissipation member  900 C according to the present example embodiment includes side surfaces  910 C and a bottom surface  920 C connecting the side surfaces  910 C with each other. The side surfaces  910 C are parallel to the first and second side surfaces  814   a  and  814   b  of the second light guide part  813 . The bottom surface  920 C includes a first bottom portion  921  corresponding to the first inclined surface  814   e  and a second bottom portion  922  corresponding to the second inclined surface  814   f . The first and second bottom portions  921  and  922  have acute angles θ with respect to the side surface  910 C. 
     In the present example embodiment of  FIG. 12 , the connecting portion  813  of the light guide plate  810  is the connecting portion of the light guide plate according to the previous example embodiment of  FIG. 1 , but the connecting portion of the light guide plate may be the connecting portion of the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example embodiment, the light emitted from the light source  221  is reflected by the first and second reflecting portions  241  and  242  of the second reflecting member  240 A which reflecting portions are inclined with respect to the PCB  222  of the light source unit  220 , so that paths of the light may be redirected according to the angle of inclination of the first and second reflecting portions  241  and  242 . Thus, the light emitted from the light source  221  may be efficiently provided to the first light guide part  211  via the second light guide part  813 . 
       FIG. 13  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment of the present teachings. 
     A backlight assembly according to the present example embodiment is substantially the same in principle as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a backlight assembly and a receiving container. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 13 , a backlight assembly according to the present example embodiment includes a first light guide part  211 , a plurality of backlight parts BLU and an optical member  250 . 
     The plurality of backlight parts BLU are disposed under a first light guide part  211  and between the first side surface  212   a  and a second light guide part  212   b . The plurality backlight parts BLU are spaced apart from each other by a certain distance so as to more uniformly maintain brightness across the display apparatus. 
     One backlight part BLU includes a second light guide part  213 , a connecting portion  215 , a light source unit  220 , a first reflecting member  230 , a second reflecting member  240  and a heat dissipation member  900 . The second light guide part  213 , the connecting portion  215 , the light source unit  220 , the first reflecting member  230 , the second reflecting member  240  and the heat dissipation member  900  of the backlight part BLU are substantially the same as those of the present example embodiment described in the  FIG. 1 . 
     In the present example embodiment, the connecting portion of the light guide plate is the connecting portion of the light guide plate according to the previous example embodiment of  FIG. 1 , but the connecting portion of the light guide plate may be the connecting portion of the light guide plate according to the previous example embodiment of  FIGS. 3 ,  5  and  7 . 
     According to the present example embodiment, the plurality of backlight parts BLU&#39;s are used in a large area display apparatus, so that brightness may be more uniformly displayed. 
       FIG. 14  is a cross-sectional view illustrating a backlight assembly according to still another example embodiment of the present teachings. 
     A backlight assembly according to the present example embodiment is substantially the same in principle as a backlight assembly according to the previous example embodiment of  FIG. 1  except for a connecting portion. Thus, the same reference numerals will be used to refer to the same or like parts as those described in the previous example embodiment of  FIG. 1  and any repetitive explanation concerning the above elements will be omitted. 
     Referring to  FIG. 14 , a light guide plate assembly  210 A according to the present example embodiment includes a first light guide part  211 A and a second light guide part  213 A. The second light guide part  213 A extends from the first light guide part  211 A to form “T”-shape. For example, the light guide plate assembly  210 A includes the first and second light guide parts  211 A and  213 A that are separated. Alternatively, the first light guide plate  211 A may be integrally formed with the second light guide plate  213 A. The light guide plate assembly  210 A may be formed through injection molding to form a T-shape. 
     According to the present example embodiment, a light source unit is disposed under the first light guide part  211 A, so that the size of the bezel of a display apparatus may be decreased. 
     According to the present invention, a light source unit overlaps with a display area displaying an image, so that a size of a bezel area surrounding the display area may be decreased. 
     In addition, the light source unit is disposed under a first reflecting member, so that a light leakage and a backlighting hot spot may be prevented from being generated. 
     In addition, a shape of a second light guide part of a light guide plate is changed, so that light may be efficiently guided to a first light guide part of the light guide plate. 
     Thus, a bright line or a dark line shown on a display apparatus may be prevented from being generated. 
     The foregoing is illustrative of the present disclosure of invention and is not to be construed as limiting thereof. Although a few example embodiments in accordance with the present disclosure of invention have been described, those skilled in the art will readily appreciate from the foregoing that many modifications are possible in the example embodiments without materially departing from the novel teachings and advantages of the present disclosure. Accordingly, all such modifications are intended to be included within the scope of the present teachings. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also functionally equivalent structures. Therefore, it is to be understood that the foregoing is illustrative of the present teachings and is not to be construed as limited to the specific example embodiments disclosed, and that modifications to the disclosed example embodiments, as well as other example embodiments, are intended to be included within the scope of the disclosure.