Patent Publication Number: US-10771731-B2

Title: Display device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuation application of U.S. application Ser. No. 14/598,942 filed on Jan. 16, 2015, which claims priority to Japanese Patent Application No. 2014-009370 filed on Jan. 22, 2014. The entire disclosures of U.S. application Ser. No. 14/598,942 and Japanese Patent Application No. 2014-009370 are hereby incorporated herein by reference. 
    
    
     BACKGROUND 
     Field of the Invention 
     The present invention generally relates to a display device. More specifically, the present invention relates to a display device for displaying an image. 
     Background Information 
     There are known display devices for displaying an image, such as a liquid crystal television set (see Japanese Unexamined Patent Application Publication No. 2012-53082 (Patent Literature 1), for example). With such a conventional display device, a housing of the display device is made up of a front cabinet and a rear cabinet. The front cabinet covers the outer peripheral part of the front face of a liquid crystal panel that is disposed in the interior of the housing. The rear cabinet covers the entire rear face of the liquid crystal panel. 
     SUMMARY 
     With the display device, there is a need for slimming down a border portion or bezel, which supports the outer peripheral part of the liquid crystal panel. 
     One aspect is to provide a display device with a slimmer border portion. 
     In view of the state of the known technology, a display device includes a display panel, a light source, an optical member, a rear chassis and a frame member. The light source is disposed on a rear side relative to the display panel. The optical member is disposed on the rear side relative to the display panel. The rear chassis houses the light source, the rear chassis including an outer peripheral portion with a flat component that extends outward relative to a center of the display device and a bent part that extends rearward from an outer edge of the flat component. The frame member is fastened to the bent part of the rear chassis with a fastening member. 
     Also other objects, features, aspects and advantages of the present disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses one embodiment of the display device. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Referring now to the attached drawings which form a part of this original disclosure: 
         FIG. 1  is an elevational view of a display device in accordance with one embodiment; 
         FIG. 2  is an exploded perspective view of the display device in accordance with the embodiment; 
         FIG. 3  is an elevational view of a rear face side of a rear frame; 
         FIG. 4  is a cross sectional view of the rear frame, taken along D-D line in  FIG. 3 ; 
         FIG. 5  is a detail cross sectional view of the rear frame, illustrating a portion Y circled by a one-dot chain line in  FIG. 4 ; 
         FIG. 6  is a detail plan view of the rear frame, illustrating a portion X circled by a one-dot chain line in  FIG. 3 ; 
         FIG. 7  is a detail perspective view of the rear frame, illustrating the portion X in  FIG. 3 ; 
         FIGS. 8A, 8B and 8C  are simplified diagrams of a method for forming the rear frame; 
         FIG. 9  is a detail cross sectional view of the display device, taken along A-A line in  FIG. 1 ; 
         FIG. 10  is a detail cross sectional view of the display device, taken along B-B line in  FIG. 1 ; 
         FIG. 11  is a detail cross sectional view of the display device, taken along C-C line in  FIG. 1 ; and 
         FIG. 12  is a detail cross sectional view of a display device in accordance with a comparative example. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     A selected embodiment will now be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following descriptions of the embodiment are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents. Specifically, the numerical values, shapes, materials, constituent elements, layout positions and connection modes of the constituent elements, and so forth given in the following embodiments are provided all just for illustration only and not for the purpose of limiting the present invention. The present invention is merely defined by the appended claims. Of the constituent elements in the following embodiment, those not mentioned in an independent claim are not necessarily needed to achieve the object of the present invention, and will be described for understanding of the embodiment. 
     Overall Structure of Display Device 
     The overall structure of a display device  2  in accordance with one embodiment will now be described through reference to  FIGS. 1 and 2 .  FIG. 1  is an elevational view of the display device  2  in accordance with the embodiment.  FIG. 2  is an exploded perspective view of the display device in accordance with the embodiment. 
     As shown in  FIGS. 1 and 2 , the display device  2  in this embodiment is a liquid crystal television set, for example. The display device  2  includes a housing  4  for holding various parts. The housing  4  is made up of a front cabinet  6  (e.g., a front face housing) and a rear cabinet  8  (e.g., a rear face housing) that are connected together. A stand  10  for supporting the housing  4  from below is attached to the lower end of the housing  4 . 
     The front cabinet  6  is configured in the form of a rectangular frame. The front cabinet  6  is disposed so as to cover the outer peripheral part of a front face  12   a  of a liquid crystal panel  12  (e.g., a display panel) discussed below. As shown in  FIG. 9  discussed below, ribs  7  that extend to the rear cabinet  8  side are provided on the inner face of the front cabinet  6 . The front cabinet  6  is molded from plastic, for example. 
     The rear cabinet  8  has a shape that bulges out slightly to the rear face side of the display device  2 . The rear cabinet  8  is disposed so as to cover the entire rear face  12   b  of the liquid crystal panel  12 . As shown in  FIG. 9  discussed below, the rear cabinet  8  is connected to the front cabinet  6  around the outside of the liquid crystal panel  12 . The rear cabinet  8  is molded from plastic, for example. 
     As shown in  FIG. 2 , a rear frame  14 , a backlight unit  16 , a diffuser plate  18  (e.g., an optical member), a pair of optical sheets  20  and  22  (e.g., optical members), and a molding frame  24  are disposed in addition to the above-mentioned liquid crystal panel  12  in the interior of the housing  4 . The internal structure of the display device  2  will be discussed below. 
     Structure of Rear Frame 
     Next, the structure of the above-mentioned rear frame  14  will be described through reference to  FIGS. 2 to 7 .  FIG. 3  is an elevational view of a rear face side of the rear frame.  FIG. 4  is a cross sectional view of the rear frame  14 , taken along D-D line in  FIG. 3 .  FIG. 5  is a detail cross sectional view of the rear frame  14 , illustrating a portion Y circled by a one-dot chain line in  FIG. 4 .  FIG. 6  is a detail plan view of the rear frame  14 , illustrating the portion X circled by a one-dot chain line in  FIG. 3 .  FIG. 7  is a detail perspective view of the rear frame  14 , illustrating the portion X in  FIG. 3 . Also,  FIG. 3  shows a state in which the display device  2  is viewed from the rear face side after the rear cabinet  8  has been removed. 
     As shown in  FIG. 2 , the rear frame  14  is a metal frame that supports the above-mentioned backlight unit  16 , the diffuser plate  18 , and the pair of optical sheets  20  and  22 . The rear frame  14  is disposed on the inner face of the rear cabinet  8 . Specifically, the entire rear face  14   a  of the rear frame  14  is covered by the rear cabinet  8 . The rear frame  14  is formed from sheet metal such as SECC (steel electrically chromate coated). 
     As shown in  FIGS. 3 to 5 , the rear frame  14  has a first frame component  26  (e.g., a light source housing component), a second frame component  28  (e.g., a first flat component), and a third frame component  30 . 
     The first frame component  26  is configured in a box shape having a substantially rectangular opening  26   a . The first frame component  26  supports a plurality of LED bars  61  (discussed below) of the backlight unit  16  and a reflector  62  (discussed below) of a reflective sheet  60  (e.g., an optical member). In other words, the first frame component  26  houses the LED bars  61 . In the illustrated embodiment, as shown in  FIG. 9  discussed below, the first frame component  26  has a slanted peripheral part  26   b  that is slanted towards the liquid crystal panel  12 . 
     The second frame component  28  extends outward from the peripheral edge (e.g., the opening edge) of the opening  26   a  of the first frame component  26  (that is, toward the outside of the liquid crystal panel  12  in a direction substantially parallel to the liquid crystal panel  12 ). In the illustrated embodiment, the second frame component  28  extends from an end portion of the slanted peripheral part  26   b  of the first frame component  26  in the outward direction that is substantially parallel to the liquid crystal panel  12 . 
     The third frame component  30  has a first bent part  32  (e.g., a first extending part), a second bent part  34  (e.g., a second flat component), and a third bent part  36  (e.g., a second extending part). The first bent part  32  is bent from the outer peripheral part of the second frame component  28  to the liquid crystal panel  12  side. As shown in  FIG. 9  discussed below, the first bent part  32  is inclined by an angle θ (such as approximately 3 to 5°) outward beyond the perpendicular direction perpendicular to the second frame component  28 . The second bent part  34  is bent outward from the end of the first bent part  32 . The second bent part  34  is bent substantially perpendicular to the first bent part  32 . The third bent part  36  is bent from the end of the second bent part  34  to the rear cabinet  8  side. The third bent part  36  is also bent substantially perpendicular to the second bent part  34 . In the illustrated embodiment, third frame component  30  bulges towards the liquid crystal panel  12  from the outer peripheral part of the second frame component  28  to support the outer peripheral part of the optical member, such as the diffuser plate  18 , the optical sheets  20  and  22 , and the reflective sheet  60 . Furthermore, the third frame component  30  includes the first bent part  32  that extends towards the liquid crystal panel  12  from the outer peripheral part of the second frame component  28 , and the second bent part  34  that extends from the end (e.g., the end portion) of the first bent part  32  in the outward direction to sandwich the outer peripheral part of the optical member between the liquid crystal panel  12  and the second bent part  34 . Also, in the illustrated embodiment, the first bent part  32  is inclined in the outward direction relative to the perpendicular direction perpendicular to the second frame component  28 . Also, in the illustrated embodiment, the third frame component  30  further includes the third bent part  36  that extends from the end (e.g., the end portion) of the second bent part  34  away from the liquid crystal panel  12 . Thus, in the illustrated embodiment, the second frame component  28  and the second bent part  34  extend in the outward direction relative to the peripheral edge of the opening  26   a  of the first frame component  26 . The second frame component  28  and the second bent part  34  are substantially parallel to the rear face  12   b  of the liquid crystal panel  12 . The second bent part  34  is disposed closer to the liquid crystal panel  12  than the second frame component  28 . The second bent part  34  supports the reflective sheet  60 , the diffuser plate  18 , and the optical sheets  20  and  22 . 
     As shown in  FIGS. 3, 6, 7, and 10  discussed below, a bevel  40  (e.g., an inclined surface or a chamfer) is formed on each of the four corners of a peripheral edge  38  (e.g., a peripheral edge portion) between the second frame component  28  and the first bent part  32 . In other words, in the illustrated embodiment, the peripheral edge  38  between the second frame component  28  and the third frame component  30  has the bevel  40  (e.g., the inclined surface) at a location corresponding to the corner of the liquid crystal panel  12 . In the illustrated embodiment, as shown in  FIGS. 6 and 7 , the bevel  40  (e.g., the inclined surface) has an overall triangular shape as viewed in a normal direction of the bevel  40 . The bevel  40  (e.g., the inclined surface) has an edge portion  40   a  defining the corner of the peripheral edge  38  between the second frame component  28  and the third frame component  30 . The edge portion  40   a  of the bevel  40  is slanted towards the liquid crystal panel  12  (see  FIG. 10 ) as moving towards the corner of the peripheral edge  38  between the second frame component  28  and the third frame component  30 . 
     As shown in  FIGS. 6 and 7 , and  FIGS. 9 and 10  (discussed below), of the peripheral edge  42  between the first bent part  32  and the second bent part  34 , the radius (or the bend radius) (such as approximately 3 mm) at the four corners  42   a  is larger than the radius (or the bend radius) (such as approximately 1.5 mm) of the portions  42   b  other than the four corners  42   a . In other words, in the illustrated embodiment, the bend radius of the peripheral edge  42  between the first bent part  32  and the second bent part  34  is larger at a location corresponding to the corner of the liquid crystal panel  12  than at a location corresponding to a middle portion of the side of the liquid crystal panel  12 . With this arrangement, in the illustrated embodiment, the overlapping width W 1  (see  FIG. 10 ) between the support component  64  of the reflective sheet  60  (e.g., the outer peripheral part of the optical member) and the second bent part  34  that is measured in the outward direction at a location corresponding to the corner of the liquid crystal panel  12  is smaller than the overlapping width W 2  (see  FIG. 9 ) between the support component  64  of the reflective sheet  60  (e.g., the outer peripheral part of the optical member) and the second bent part  34  at a location corresponding to the middle portion of the side of the liquid crystal panel  12  (i.e., W 1 &lt;W 2 ). Also, in the illustrated embodiment, as shown in  FIGS. 9 and 10 , the second bent part  34  has a flat surface  34   a . The width W 3  (see  FIG. 10 ) between the inward peripheral edge  34   b  of the flat surface  34   a  of the second bent part  34  and the third bent part  36  that is measured in the outward direction at a location corresponding to the corner of the liquid crystal panel  12  is smaller than the width W 4  (see  FIG. 9 ) between the inward peripheral edge  34   b  of the flat surface  34   a  of the second bent part  34  and the third bent part  36  at a location corresponding to the middle portion of the side of the liquid crystal panel  12  (i.e., W 3 &lt;W 4 ). 
     A method for forming the rear frame  14  will now be described through reference to  FIGS. 8A, 8B and 8C  along with the above-mentioned  FIG. 5 .  FIGS. 8A, 8B and 8C  are simplified diagrams of a method for forming the rear frame  14 . 
     First, as shown in  FIG. 8A , a thin piece of sheet metal  44  is readied as a blank for forming the rear frame  14 . This sheet metal  44  is formed from SECC or the like. 
     Then, as shown in  FIG. 8B , this sheet metal  44  is subjected to drawing, such as deep drawing, between the upper mold  48  and lower mold  50  of a deep drawing press  46  to form (draw) the first frame component  26  and the second frame component  28 . As shown in  FIG. 5 , the sheet metal  44  here is subjected to the deep drawing such that the radius (or the bend radius) will be relatively large at the peripheral edge  52  between the first frame component  26  and the second frame component  28  in order to raise the fluidity of the metal material that forms the sheet metal  44 . 
     After this, as shown in  FIG. 8C , the outer peripheral part of the sheet metal  44  in which the first frame component  26  and the second frame component  28  have been formed is bent between the upper mold  56  and lower mold  58  of a bending press  54  to form the third frame component  30 . To reduce the accumulation of stress in the four corners of the peripheral edge  38  between the second frame component  28  and the first bent part  32  here, the sheet metal  44  is bent so as to form the bevel  40  on each of these four corners. Furthermore, to allow the bending to proceed smoothly, the first bent part  32  is bent from the outer peripheral part of the second frame component  28  so that the first bent part  32  will be inclined at an angle θ, outward beyond the perpendicular direction of the second frame component  28 . In the illustrated embodiment, the first frame component  26 , the second frame component  28  and the third frame component  30  are formed by stamping the sheet metal  44 . The first frame component  26  and the second frame component  28  are formed by drawing (or deep drawing) the sheet metal  44 . The third frame component  30  is formed by forming (or metal forming) the sheet metal  44 . 
     The rear frame  14  is formed as above. With the method in this embodiment for forming the rear frame  14 , as shown in  FIG. 5 , a plane defined by the second frame component  28  serves as the stamping reference plane, the first frame component  26  and the second frame component  28  are each formed by drawing (or deep drawing), and the third frame component  30  is formed by bending (forming or bending of the stamping). 
     Internal Structure of Display Device 
     Next, the internal structure of the above-mentioned display device  2  will be described through reference to  FIGS. 9 to 11 , along with the above-mentioned  FIG. 2 .  FIG. 9  is a detail cross sectional view of the display device  2 , taken along A-A line in  FIG. 1 .  FIG. 10  is a detail cross sectional view of the display device  2 , taken along B-B line in  FIG. 1 .  FIG. 11  is a detail cross sectional view of the display device  2 , taken along C-C line in  FIG. 1 . 
     As shown in  FIG. 2 , the backlight unit  16  is a direct backlight unit, and serves to shine line on the rear face  12   b  of the liquid crystal panel  12 . The backlight unit  16  has the reflective sheet  60  and the plurality of LED (light emitting diode) bars  61  (e.g., the light source). In the illustrated embodiment, the first frame component  26  supports the LED bars  61 . Also, in the illustrated embodiment, the LED bars  61  are disposed on the rear side relative to the liquid crystal panel  12 . 
     As shown in  FIGS. 2, 9, and 10 , the reflective sheet  60  has the reflector  62  and a support component  64 . The reflector  62  is configured in the form of a box having a substantially rectangular opening  62   a , and is supported by the first frame component  26  of the rear frame  14 . The reflector  62  is disposed so as to cover the first bent part  32 , the second frame component  28 , and the first frame component  26  of the rear frame  14 . The reflector  62  reflects light from the LED bars  61  toward the rear face  12   b  of the liquid crystal panel  12 . The support component  64  extends outward from the peripheral edge of the opening  62   a  of the reflector  62  (that is, from the outer peripheral part of the reflector  62 ). The reflective sheet  60  is formed from polyethylene terephthalate (PET), for example. 
     The LED bars  61  have a long, slender shape, and are disposed substantially parallel to each other and spaced apart. Each of the LED bars  61  has a wiring board  66  and a plurality of LEDs  68  mounted on the wiring board  66 . 
     The wiring boards  66  are in the form of long, slender boards. The wiring boards  66  are supported on the first frame component  26  of the rear frame  14  via the reflector  62  of the reflective sheet  60 . The wiring boards  66  are formed from a metal that conducts heat well, such as aluminum. 
     The LEDs  68  are disposed spaced apart and in a single row in the lengthwise direction of each wiring board  66 . Each of the LEDs  68  has a power LED, for example. 
     The diffuser plate  18  is configured as a substantially rectangular thin plate, and is disposed between the backlight unit  16  and the liquid crystal panel  12 . The diffuser plate  18  is used to diffuse light from the backlight unit  16  toward the rear face  12   b  of the liquid crystal panel  12 . 
     The pair of optical sheets  20  and  22  are disposed so as to cover the surface of the diffuser plate  18  when they are superposed one over the other. The optical sheets  20  and  22  are used to guide light diffused by the diffuser plate  18  to the rear face  12   b  of the liquid crystal panel  12 . 
     As shown in  FIGS. 9 and 10 , the outer peripheral parts of the optical sheets  20  and  22  and the diffuser plate  18  and the support component  64  of the reflective sheet  60  are supported by the second bent part  34  of the third frame component  30  of the rear frame  14 . The outer peripheral parts of the optical sheets  20  and  22  and the diffuser plate  18  and the support component  64  of the reflective sheet  60  are sandwiched between the molding frame  24  (discussed below) and the second bent part  34 . 
     The molding frame  24  is configured by putting together four long, slender frame members  24   a  to  24   d  into a rectangular frame shape. The molding frame  24  is fastened by screws  70  to the third bent part  36  of the third frame component  30  of the rear frame  14  along with the ribs  7  of the front cabinet  6 . The molding frame  24  is formed from plastic, for example. 
     The liquid crystal panel  12  is configured in the form of a rectangular panel. As shown in  FIG. 9 , the outer peripheral part of the rear face  12   b  of the liquid crystal panel  12  is supported by the molding frame  24  via a cushioning member  72 . Also, the outer peripheral part of the front face  12   a  of the liquid crystal panel  12  is supported by the front cabinet  6  via a cushioning member  74 . Consequently, the outer peripheral part of the liquid crystal panel  12  is sandwiched between the front cabinet  6  and the molding frame  24 . The cushioning members  72  and  74  are used to absorb any impact to which the liquid crystal panel  12  is subjected, and are formed from urethane, for example. When light from the backlight unit  16  shines on the rear face  12   b  of the liquid crystal panel  12 , an image is displayed in the display region of the front face  12   a  of the liquid crystal panel  12 . 
     As shown in  FIG. 9 , the rear cabinet  8  is fastened by screws  76  (e.g., fastening members) to the second frame component  28  of the rear frame  14 . Thus disposing the fastening face where the rear cabinet  8  and the rear frame  14  are fastened together on the second frame component  28  keeps the size in the thickness direction of the housing  4  (the Z direction) smaller than when this fastening face is disposed on the outer peripheral face of the display device  2 . 
     As shown in  FIG. 11 , because the rear frame  14  is configured as above, a space  78  is formed between the rear cabinet  8  and the second frame component  28  of the rear frame  14 . In this space  78  is disposed a control switch  80  for operating the display device  2 , such as switching on and off the main power supply of the display device  2 , changing the broadcast channel, and so forth. The control switch  80  is provided with a plurality of push buttons  80   a . These push buttons  80   a  are each exposed to the outside through a hole  82  provided to the rear cabinet  8 . In the illustrated embodiment, the display device  2  includes the front cabinet  6  (e.g., the front face housing) covering the outer peripheral part of the front face of the liquid crystal panel  12 , the rear cabinet  8  (e.g., the rear face housing) covering the rear face of the rear frame  14 , and the screws  76  (e.g., the fastening members) fastening the rear cabinet  8  to the second frame component  28  of the rear frame  14 . In the illustrated embodiment, the display device  2  further includes the control switch  80  disposed between the rear cabinet  8  and the second frame component  28  of the rear frame  14  to control the display device  2 . Also, in the illustrated embodiment, the display device  2  further includes the screws  70  (e.g., the fastening members) fastening the front cabinet  6  to the third frame component  30 . 
     Effect 
     Next, referring to  FIG. 12 , the effect obtained with the display device  2  in this embodiment will be described.  FIG. 12  is a detail cross sectional view of a display device  100  in accordance with a comparative example. As shown in  FIG. 12 , with the display device  100  in accordance with the comparative example, a housing  102  of a display device  100  is made up of a front cabinet  104  and a rear cabinet  106 . The front cabinet  104  covers the outer peripheral part of the front face of a liquid crystal panel  108  disposed in the interior of the housing  102 . The rear cabinet  106  covers the entire rear face of the liquid crystal panel  108 . 
     In addition to the above-mentioned liquid crystal panel  108 , a bezel  110 , a molding frame  112 , a rear frame  114 , a backlight unit  116 , a diffuser plate  118 , a pair of optical sheets  120  and  122 , and so forth are disposed in the interior of the housing  102 . The bezel  110  is a metal frame member for supporting the outer peripheral part of the front face of the liquid crystal panel  108 . The molding frame  112  is a plastic frame member for supporting the outer peripheral part of the rear face of the liquid crystal panel  108 . The rear frame  114  is a metal frame for supporting the backlight unit  116 , and is disposed between the liquid crystal panel  108  and the rear cabinet  106 . The backlight unit  116  has an LED bar (not shown) and a reflective sheet  124  that reflects light from the LED bar toward the rear face of the liquid crystal panel  108 . The diffuser plate  118  and the optical sheets  120  and  122  are disposed between the liquid crystal panel  108  and the backlight unit  116 . 
     The above-mentioned rear frame  114  has a first support component  126  and a second support component  128 . The first support component  126  is configured in the form of a box having an opening. This first support component  126  supports the reflective sheet  124  and the LED bar of the backlight unit  116 . The second support component  128  extends outward (that is, substantially parallel to the liquid crystal panel  108 ) from the opening of the first support component  126 . This second support component  128  supports the diffuser plate  118 , the optical sheets  120  and  122 , and the reflective sheet  124 . 
     With the display device  100  in accordance with the comparative example, the above-mentioned rear frame  114  is formed by stamping a piece of sheet metal, for example. Here, to improve the fluidity of the metal material that forms the sheet metal, stamping is performed so that there will be a relatively large radius (radius of curvature) at the peripheral edge  130  between the first support component  126  and the second support component  128 . Accordingly, a relatively large support space  132  needs to be ensured on the second support component  128  as a space for supporting the outer peripheral parts of the diffuser plate  118 , the optical sheets  120  and  122  and the reflective sheet  124 . In recent years there has been a trend toward slimming down the border portion  134 , which does not contribute to image display around the liquid crystal panel  108 . However, with the configuration of the display device  100  in accordance with the comparative example, the size of the border portion  134  increases corresponding to the support space  132  formed at the second support component  128 . 
     Furthermore, with the display device  100  in accordance with the comparative example, the four corners of the above-mentioned first support component  126  are configured as right-angle corners. Accordingly, when the rear frame  114  is formed by the stamping of sheet metal, stress tends to accumulate in the four corners of the first support component  126 . Thus, these four corners can be relatively easily damaged. 
     Also, with the display device  100  in accordance with the comparative example, as discussed above, a radius is formed all the way around the peripheral edge  130  between the first support component  126  and the second support component  128 . Accordingly, there is interference between the four corners of the outer peripheral part  124   a  of the reflective sheet  124  and the four corners of the peripheral edge  130 . This results in that the four corners of the outer peripheral part  124   a  of the reflective sheet  124  lift up from the rear frame  114 . 
     On the other hand, with the display device  2  in accordance with one embodiment, as discussed above, the third frame component  30  of the rear frame  14  has the first bent part  32 , the second bent part  34 , and the third bent part  36  formed by bending. Of these, the second bent part  34  supports the outer peripheral parts of the pair of optical sheets  20  and  22 , the diffuser plate  18 , and the support component  64  of the reflective sheet  60 . The second bent part  34  is bent substantially perpendicular to the first bent part  32 , so as shown in  FIG. 9 , just a relatively small support space  84  need be provided to the second bent part  34  as the space for supporting the outer peripheral parts of the pair of optical sheets  20  and  22 , the diffuser plate  18 , and the support component  64  of the reflective sheet  60 . This allows the border portion  86  of the display device  2  to be kept small, resulting in a slimmer border. Thus, a display device with which a slimmer border can be obtained can be provided. 
     Furthermore, in the formation of the rear frame  14 , the formation method can be divided up into the first frame component  26  side and the third frame component  30  side, using a plane defined by the second frame component  28  as a stamping reference plane. Consequently, in the formation of the first frame component  26  and the second frame component  28  by drawing or deep drawing, for example, the radius (the bend radius) can be relatively large at the peripheral edge  52  between the first frame component  26  and the second frame component  28  in order to improve the fluidity of the metal material that forms the sheet metal  44 . Meanwhile, in the formation of the third frame component  30  by bending, for example, the radius (the bend radius) can be relatively small at the peripheral edge  42  between the first bent part  32  and the second bent part  34  in order to keep the above-mentioned support space small. 
     Furthermore, with the method for forming the rear frame  14  in this embodiment, the third frame component  30  is formed by bending after the first frame component  26  and the second frame component  28  are formed by deep drawing, using a plane defined by the second frame component  28  as the stamping reference plane. Consequently, the rear frame  14  can be formed by integral molding (that is, so that there will be no seams). Thus, there will be no seams at the four corners of the rear frame  14 , etc., and there will be less leakage of light from the backlight unit  16  to the outside of the housing  4 . Furthermore, because there are no seams in the rear frame  14 , the stiffness of the frame  14  can be increased, and the number of steps involved in manufacturing the frame  14  can be reduced because there is no need for a step of crimping seams. Also, since the frame  14  is formed by deep drawing and bending, there will be less dimensional variance in formation of the frame  14  than when the frame  14  is formed by repeating bending a number of times, for example, and this affords better dimensional accuracy in the frame  14 . 
     Furthermore, as discussed above, in the formation of the rear frame  14 , the sheet metal  44  is bent so as to form the bevel  40  on each of the four corners at the peripheral edge  38  between the second frame component  28  and the first bent part  32 . Consequently, as shown in  FIGS. 7 and 10 , the tops  38   a  of the four corners in the peripheral edge  38  are disposed more to the third frame component  30  side than the second frame component  28 . As a result, there is less accumulation of stress in the four corners of the peripheral edge  38 , and the four corners of the peripheral edge  38  will be less likely to be damaged. Thus, a display device with which there is less damage to the frame in the formation of the frame can be provided. 
     Furthermore, as discussed above, of the peripheral edge  42  between the first bent part  32  and the second bent part  34 , the radius of the portions  42   a  of the four corners is larger than the radius of the portions  42   b  other than these portions  42   a  of the four corners. If the radius of the portions  42   a  of the four corners of the peripheral edge  42  are the same as the radius of the portions  42   b  other than these portions  42   a  of the four corners, as shown by the one-dot chain line in  FIG. 10 , then the four corners of the opening  62   a  in the reflector  62  would interfere with the portions  42   a  of the four corners of the peripheral edge  42 . Accordingly, because the radius at the portions  42   a  of the four corners of the peripheral edge  42  is larger than the portions  42   b  other than the portions  42   a  of the four corners, the four corners are eased at the opening  62   a  in the reflector  62 , which reduces interference between the reflective sheet  60  and the rear frame  14 . Thus, a display device with which there is less interference between the reflective sheet and the frame can be provided. 
     The display device in accordance with one embodiment is illustrated above, but the present invention is not limited to the above embodiment. 
     In the above embodiment, the display device  2  is illustrated as a liquid crystal television set, but this is not the only option. The display device  2  can instead be a liquid crystal monitor used with a person computer, for example. 
     In the above embodiment, the backlight unit  16  is configured as a direct backlight unit, but this is not the only option. The backlight unit  16  can instead be configured as an edge-lit backlight unit. In this case, the second frame component  28  can be eliminated from the rear frame  14 , for example, so that the rear frame  14  is made up of just the first frame component  26  and the third frame component  30 . Furthermore, in this case the rear frame  14  can be formed by bending alone. 
     In the above embodiment, the third frame component  30  is configured to have the first bent part  32 , the second bent part  34 , and the third bent part  36 , but this is not the only option. The third bent part  36  can be eliminated from these. 
     In the above embodiment, the first bent part  32  is configured to be inclined outward beyond the perpendicular direction of the second frame component  28 , but this is not the only option. The first bent part  32  can be configured to extend substantially perpendicular to the second frame component  28 . 
     In the above embodiment, the molding frame  24  is configured so that it can be separated into four frame members, but this is not the only option. The molding frame  24  can be formed by a single integrated part. 
     In the above embodiment, the bevels  40  or the beveled (planar) chamfers are formed at the four corners of the peripheral edge  38  between the second frame component  28  and the first bent part  32 , but this is not the only option. Rounded or curved chamfer can be formed instead, for example. 
     In the above embodiment, the rear cabinet  8  is configured to cover the entire rear face of the rear frame  14 , but this is not the only option, and can instead be configured to cover only part of the rear face of the rear frame  14 . 
     The display device  2  can be applied as a liquid crystal television set, for example. 
     In the illustrated embodiment, the display device in accordance with one mode is a display device that includes a display panel, a light source disposed on a rear side relative to the display panel, an optical member disposed on the rear side relative to the display panel, a light source housing component housing the light source, first and second flat components extending in an outward direction relative to an opening edge of the light source housing component, the first and second flat components being substantially parallel to a rear face of the display panel, the second flat component being disposed closer to the display panel than the first flat component, the second flat component supporting the optical member. 
     The display device can further include a first extending part extending towards the display panel from an outer peripheral part of the first flat component, the second flat component extending from an end portion of the first extending part in the outward direction to sandwich an outer peripheral part of the optical member between the display panel and the second flat component. 
     With this mode, the display device has the first extending part and the second flat component. The outer peripheral part of the optical member is supported by the second flat component. Here, the first extending part is bent from the outer peripheral part of the first flat component to the display panel side, and the second flat component is bent in the outward direction from the end portion of the first extending part. Thus, only a relatively small support space need be ensured as the space for supporting the outer peripheral part of the optical member at the second flat component. This allows the border portion of the display device to be kept small, and affords a slimmer border. Furthermore, the display device has the light source housing component and the first flat component, which extends in the outward direction relative to the opening edge of the light source housing component. For example, in the formation of the display device, the formation method can be divided up into the light source housing component side and the second flat component side, using a plane defined by the first flat component as a stamping reference plane. Consequently, when the light source housing component and the first flat component are formed by deep drawing of sheet metal, for example, the bend radius can be relatively large at the peripheral edge between the light source housing component and the first flat component in order to improve the fluidity of the metal material that forms the sheet metal. Meanwhile, in the formation of the second flat component by bending of sheet metal, for example, the bend radius can be relatively small at the peripheral edge between the first extending part and the second flat component in order to keep the above-mentioned support space small. 
     For example, the display device in accordance with one mode can be configured such that a peripheral edge portion between the first flat component and the first extending part has an inclined surface at a location corresponding to a corner of the display panel. 
     With this mode, the four corners can be the inclined surfaces at the peripheral edge portion between the first flat component and the first extending part. When the first extending part is formed by bending, for example, the inclined surfaces at the four corners of the peripheral edge between the first flat component and the first extending part will reduce the accumulation of stress at the four corners of this peripheral edge. This makes it less likely that the four corners of the peripheral edge will be damaged. 
     For example, the display device in accordance with one mode can be configured such that the first extending part is inclined in the outward direction relative to a perpendicular direction perpendicular to the first flat component. 
     With this mode, the first extending part is inclined in the outward direction beyond the perpendicular direction perpendicular the first flat component. Thus, when the first extending part is formed by bending, for example, the bending can be carried out more smoothly. 
     For example, the display device in accordance with one mode can be configured such that a bend radius of a peripheral edge portion between the first extending part and the second flat component is larger at a location corresponding to a corner of the display panel than at a location corresponding to a middle portion of a side of the display panel. Furthermore, the display device can be configured such that an overlapping width between the outer peripheral part of the optical member and the second flat component that is measured in the outward direction is smaller at a location corresponding to a corner of the display panel than at a location corresponding to a middle portion of a side of the display panel. 
     With this mode, the bend radius is larger at the four corners of the peripheral edge portion between the first extending part and the second flat component than at portions other than the four corners. Consequently, the four corners of the outer peripheral part of the optical member can be eased, so there will be less interference between a reflective sheet of the optical member and the peripheral edge portion. Furthermore, a support space for supporting a support component of the reflective sheet can be ensured at the second flat component corresponding to the portions of the peripheral edge portion between the first extending part and the second flat component other than the four corners. 
     For example, the display device in accordance with one mode can further include a front face housing covering an outer peripheral part of a front face of the display panel, a rear face housing covering a rear face of the light source housing component, and a fastening member fastening the rear face housing to the first flat component. 
     With this mode, the rear face housing is fastened by the fastening member to the first flat component. Thus disposing the fastening face, where the rear face housing and the first flat component are fastened together, on the first flat component keeps the size smaller in the thickness direction of the display device than when this fastening face is disposed on the outer peripheral face of the display device. 
     For example, the display device in accordance with one mode can further include a front face housing covering an outer peripheral part of a front face of the display panel, a rear face housing covering a rear face of the light source housing component, and a control switch disposed between the rear face housing and the first flat component to control the display device. 
     With this mode, the control switch is disposed between the rear face housing and the first flat component. This allows the space formed between the rear face housing and the first flat component to be effectively utilized to install the control switch, so less space is taken up. 
     For example, with the display device in accordance with one mode, the light source housing component, the first flat component and the second flat component are formed by stamping a piece of sheet metal. For example, the light source housing component and the first flat component can be formed by drawing a piece of sheet metal. Also, the second flat component can be formed by forming a piece of sheet metal. 
     With this mode, the light source housing component and first flat component are formed by drawing (or deep drawing) of sheet metal. The second flat component is formed by the bending of sheet metal. This means that the rear frame, which at least includes the light source housing component, the first flat component and the second flat component, for example, can be formed by integral forming (that is, forming that produces no seams). Thus, there will be no seams at the four corners, etc., of the rear frame, and this reduces leakage of light from the light source to the outside of the display device. Furthermore, because there are no seams, the stiffness of the rear frame can be increased, and the number of steps involved in manufacturing the rear frame can be reduced because there is no need for a step of crimping seams. Also, since the rear frame is formed by drawing (or deep drawing) and bending, there will be less dimensional variance in formation of the rear frame than when the rear frame is formed by repeating bending a number of times, for example, and this affords better dimensional accuracy in the rear frame. 
     The display device in accordance with one mode is also a display device for displaying an image. The display device includes a display panel configured to display the image, a light source configured to illuminate a rear face of the display panel, and a metal rear frame supporting the light source. The rear frame is configured in the form of a box having an opening, and in which the four corners are chamfered. 
     With this mode, the four corners of the rear frame are chamfered. When the rear frame is formed by bending, for example, chamfering the four corners of the rear frame will reduce the accumulation of stress at the four corners of this peripheral edge. This makes it less likely that the four corners of the peripheral edge will be damaged. 
     Furthermore, the display device in accordance with one mode is a display device for displaying an image. The display device includes a display panel configured to display the image, a light source configured to emit light, a reflective sheet having a reflector that is configured to reflect light from the light source toward a rear face of the display panel and a support component provided to an outer peripheral part of the reflector, and a metal rear frame supporting the light source and the reflective sheet. The rear frame has a light source housing component that is configured in the form of a box having an opening, and that supports the light source and the reflective sheet, a first flat component that extends from the opening of the light source housing component in an outward direction that is substantially parallel to the display panel, a first extending part that is bent from the outer peripheral part of the first flat component to the display panel side, and a second flat component that is bent from an end of the first extending part in the outward direction and that supports the support component of the reflective sheet. The bend radius of four corners of a peripheral edge portion between the first extending part and the second flat component is larger than the bend radius at portions other than the four corners. 
     With this mode, the bend radius of the four corners of the peripheral edge portion between the first extending part and the second flat component is larger than the bend radius at the portions other than the four corners. This eases the four corners of the outer peripheral part of the reflector, so there will be less interference between the reflective sheet and the rear frame. Furthermore, a support space for supporting the support component of the reflective sheet can be ensured at the second flat component corresponding to the portion of the peripheral edge portion between the first extending part and the second flat component other than the four corners. 
     The display device in accordance with one mode affords a slimmer border. 
     The display device in accordance with one mode reduces damage to the rear frame during the formation of the rear frame. 
     The display device in accordance with one mode reduces interference between the reflective sheet and the rear frame. 
     In accordance with a first aspect, a display device comprises: a display panel; a light source disposed on a rear side relative to the display panel; an optical member disposed on the rear side relative to the display panel; a light source housing component housing the light source; and first and second flat components extending in an outward direction relative to an opening edge of the light source housing component, the first and second flat components being substantially parallel to a rear face of the display panel, the second flat component being disposed closer to the display panel than the first flat component, the second flat component supporting the optical member. 
     In accordance with a second aspect, the display device according to the first aspect further comprises a first extending part extending towards the display panel from an outer peripheral part of the first flat component, the second flat component extending from an end portion of the first extending part in the outward direction to sandwich an outer peripheral part of the optical member between the display panel and the second flat component. 
     In accordance with a third aspect, with the display device according to the second aspect, a peripheral edge portion between the first flat component and the first extending part has an inclined surface at a location corresponding to a corner of the display panel. 
     In accordance with a fourth aspect, with the display device according to the second aspect, the first extending part is inclined in the outward direction relative to a perpendicular direction perpendicular to the first flat component. 
     In accordance with a fifth aspect, with the display device according to the second aspect, a bend radius of a peripheral edge portion between the first extending part and the second flat component is larger at a location corresponding to a corner of the display panel than at a location corresponding to a middle portion of a side of the display panel. 
     In accordance with a sixth aspect, with the display device according to the second aspect, an overlapping width between the outer peripheral part of the optical member and the second flat component that is measured in the outward direction is smaller at a location corresponding to a corner of the display panel than at a location corresponding to a middle portion of a side of the display panel. 
     In accordance with a seventh aspect, the display device according to the first aspect further comprises a front face housing covering an outer peripheral part of a front face of the display panel, a rear face housing covering a rear face of the light source housing component, and a fastening member fastening the rear face housing to the first flat component. 
     In accordance with an eighth aspect, the display device according to the first aspect comprises a front face housing covering an outer peripheral part of a front face of the display panel, a rear face housing covering a rear face of the light source housing component, and a control switch disposed between the rear face housing and the first flat component to control the display device. 
     In accordance with a ninth aspect, with the display device according to the first aspect, the light source housing component, the first flat component and the second flat component are formed by stamping a piece of sheet metal. 
     In accordance with a tenth aspect, with the display device according to the first aspect, the light source housing component and the first flat component are formed by drawing a piece of sheet metal. 
     In accordance with an eleventh aspect, with the display device according to the first aspect, the second flat component is formed by forming a piece of sheet metal. 
     In accordance with a twelfth aspect, the display device according to the second aspect further comprises a second extending part extending from an end portion of the second flat component away from the display panel. 
     In accordance with a thirteenth aspect, with the display device according to the twelfth aspect, the second flat component has a flat surface, a width between an inward peripheral edge of the flat surface of the second flat component and the second extending part that is measured in the outward direction is smaller at a location corresponding to a corner of the display panel than at a location corresponding to a middle portion of a side of the display panel. 
     In accordance with a fourteenth aspect, the display device according to the first aspect further comprises a front face housing covering an outer peripheral part of a front face of the display panel, a rear face housing covering a rear face of the light source housing component, and a fastening member fastening the front face housing to the second flat component. 
     In accordance with a fifteenth aspect, with the display device according to the third aspect, the inclined surface has an overall triangular shape as viewed in a normal direction of the inclined surface. 
     In accordance with a sixteenth aspect, with the display device according to the third aspect, the inclined surface has an edge portion defining a corner of the peripheral edge portion between the first flat component and the first extending part, the edge portion of the inclined surface being slanted towards the display panel as moving towards the corner of the peripheral edge portion between the first flat component and the first extending part. 
     In understanding the scope of the present invention, the term “comprising” and its derivatives, as used herein, are intended to be open ended terms that specify the presence of the stated features, elements, components, groups, integers, and/or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and/or steps. The foregoing also applies to words having similar meanings such as the terms, “including”, “having” and their derivatives. Also, the terms “part,” “section,” “portion,” “member” or “element” when used in the singular can have the dual meaning of a single part or a plurality of parts unless otherwise stated. 
     As used herein, the following directional terms “forward”, “rearward”, “front”, “rear”, “up”, “down”, “above”, “below”, “upward”, “downward”, “top”, “bottom”, “side”, “vertical”, “horizontal”, “perpendicular” and “transverse” as well as any other similar directional terms refer to those directions of a display device in an upright position. Accordingly, these directional terms, as utilized to describe the display device should be interpreted relative to a display device in an upright position on a horizontal surface. The terms “left” and “right” are used to indicate the “right” when referencing from the right side as viewed from the front of the display device, and the “left” when referencing from the left side as viewed from the front of the display device. 
     The term “attached” or “attaching”, as used herein, encompasses configurations in which an element is directly secured to another element by affixing the element directly to the other element; configurations in which the element is indirectly secured to the other element by affixing the element to the intermediate member(s) which in turn are affixed to the other element; and configurations in which one element is integral with another element, i.e. one element is essentially part of the other element. This definition also applies to words of similar meaning, for example, “joined”, “connected”, “coupled”, “mounted”, “bonded”, “fixed” and their derivatives. Finally, terms of degree such as “substantially”, “about” and “approximately” as used herein mean an amount of deviation of the modified term such that the end result is not significantly changed. 
     While only a selected embodiment has been chosen to illustrate the present invention, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the scope of the invention as defined in the appended claims. For example, unless specifically stated otherwise, the size, shape, location or orientation of the various components can be changed as needed and/or desired so long as the changes do not substantially affect their intended function. Unless specifically stated otherwise, components that are shown directly connected or contacting each other can have intermediate structures disposed between them so long as the changes do not substantially affect their intended function. The functions of one element can be performed by two, and vice versa unless specifically stated otherwise. Every feature which is unique from the prior art, alone or in combination with other features, also should be considered a separate description of further inventions by the applicant, including the structural and/or functional concepts embodied by such feature(s). Thus, the foregoing descriptions of the embodiment according to the present invention are provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.