Patent Publication Number: US-2012039087-A1

Title: Display device

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates generally to display devices, and more particularly, to a display device having a reflective portion. 
     2. Description of Related Art 
     A display device includes a display panel that displays image information, and a backlight module that provides light to the display panel. The backlight module includes a light source, a light guide plate, a reflecting sheet, a prism sheet, a diffusion sheet, a fixing frame and a plastic frame. The light source is placed beside the light guide plate. The reflecting sheet is placed below the light guide plate. The prism sheet, the diffusion sheet and the display panel are stacked on the light guide plate in that order. The reflecting sheet is configured to reflect the light emitting from the bottom surface to the emitting surface of the light guide plate, such that the efficiency of utilization of light energy may be improved. However, the assembly process of the display device is complicated, and the display device is relatively thick because too many components are stacked together. 
     Therefore, there is room for improvement within the art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The components in the drawings are not necessarily drawn to scale, the emphasis instead placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
         FIG. 1  is an isometric view of an embodiment of a display device including a top housing, a bottom housing, and a display module. 
         FIG. 2  is an exploded, isometric view of the display device of  FIG. 1  in which the top housing is omitted. 
         FIG. 3  is an isometric view of the display device of  FIG. 1  in which the top housing is omitted. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIGS. 1 and 2 , an embodiment of a display device  100  includes a top housing  10 , a bottom housing  20  engaged with the top housing  10 , and a display module  30 . The top housing  10  and the bottom housing  20  may be connected by a latching module (not shown), and cooperatively define a receiving space for the display module  30 . 
     The display module  30  includes a light source  31 , a light guide plate  32 , a prism sheet  33 , a diffusion sheet  34 , a display panel  35 , and a fixing frame  36 . The light source  31  includes an emitting surface. The light guide plate  32  includes a light input surface  321 , a light output surface  322 , and a bottom surface  323 . The light input surface  321  is adjacent to the light output surface  322 , and connects the light output surface  322  to the bottom surface  323 . The light output surface  322  is opposite to the bottom surface  323 . The light guide plate  32  is adjacent to the light source  31 , and the light input surface  321  faces the emitting surface of the light source  31 . The prism sheet  33  is placed on the light guide plate  32 . The diffusion sheet  34  is placed on the prism sheet  33 . The display panel  35  is placed on the diffusion sheet  34 . The fixing frame  36  fixes the light source  31 , the light guide plate  32 , the prism sheet  33 , the diffusion sheet  34 , and the display panel  35  together. 
     Referring to  FIGS. 2 and 3 , the inner surface of the bottom housing  20  includes a reflective portion  21 . In the illustrated embodiment, the bottom housing  20  may be made of metal having high reflectivity which is equal to or greater than 95%, such as aluminum alloy, copper alloy, magnesium ally, silver, and so on, and thus the reflective portion  21  can reflect light emitting from the bottom surface  323 . In the alternative embodiment, the bottom housing  20  can also be made of plastic material having high reflectivity, especially white plastic material, such as polyethylene terephthalate (PET), and polycarbonate (PC). It can be appreciated that the reflective portion  21  may be polished to further improve the reflectivity. It should be noted that the bottom housing  20  can also be made of materials having ordinary reflectivity, and then the reflective portion  21  is polished to improve the reflectivity. 
     With the display module  30  is fixed on the inner surface of the bottom housing  20  by the fixing frame  36 , and the reflective portion  21  is opposite to the bottom surface  323  of the light guide plate  32 , the reflective portion  21  can reflect the light emitting from the bottom surface  323  to the light output surface  322  of the light guide plate  32 , which improves the efficiency of utilization of light energy. Known special reflecting sheet can be omitted with the present disclosure, such that the display device  100  has relatively fewer components and a smaller thickness, thereby being more compact and easily assembled. 
     It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages.