Abstract:
A back frame including at least two main pieces is disclosed. The adjacent main pieces are assembled via assembly sections, and a plurality of anchor points are arranged on different locations of each of the assembly sections. The size of the back frame is variably configured by assembling the adjacent main pieces through different anchor points. The main pieces with anchor points on different locations may be manufactured by the same mold. The main pieces are assembled to form back frame with different sizes so as to reduce the mold cost and the manufacturing cost.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    Embodiments of the present disclosure relate to display technology, and more particularly to a back frame and a liquid crystal device with the same. 
         [0003]    2. Discussion of the Related Art 
         [0004]    Liquid crystal devices include liquid crystal panels and backlight modules. The bottom of the backlight module includes a back frame for engaging with the front, frame to fasten the liquid crystal panel and the backlight module. Currently, the one-piece back frame is integrally formed by metal punching processes or by injecting plastic materials. In this way, the material cost of the liquid crystal device is relatively high. At the same time, larger punching devices and corresponding molds are needed for back frames with larger size. in addition, different molds are also needed for manufacturing back frames with different sizes so that the cost is high and the development cycle is long. 
       SUMMARY 
       [0005]    The object of the claimed invention is to provide a back frame and a liquid crystal device incorporated the back frame. The main pieces manufactured by the same mold may be assembled to form back frames with different sizes. Thus, the mold cost and the manufacturing cost are reduced. 
         [0006]    In one aspect, a back frame includes at least two main pieces. The adjacent main pieces are assembled via assembly sections, and a plurality of anchor points are arranged on different locations of each of the assembly sections. The size of the back frame is variably configured by assembling the at least two adjacent main pieces through different anchor points. Wherein the anchor points are rivet holes. screw holes, non-hole rivet points, or welding points. The assembly sections of the main pieces further include protrusions surrounding by the plurality of anchor points. 
         [0007]    Wherein the protrusions include a first protrusion and a second protrusion respectively arranged on the assembly sections of the two adjacent main pieces, and the second protrusion is received in a space limited by the first protrusion. 
         [0008]    Wherein the back frame includes a first main piece and a second main piece. The first main piece includes a first main portion and a first extended portion vertically extended from one end of the first main portion, the second main piece includes a second main portion and a second extended portion vertically extended from one end of the second main portion. Wherein the first main portion and the second extended portion, and the second main portion and the first extended portion are respectively assembled together by the anchor points so as to form the back frame. 
         [0009]    Wherein the back frame includes two parallel, spaced apart first main pieces and two parallel, spaced apart second main pieces, and wherein ends of the first main pieces respectively connects with ends of the second main pieces by the anchor points so as to form the back frame. 
         [0010]    In another aspect, a back frame includes at least two main pieces. The adjacent main pieces are assembled via assembly sections, and a plurality of anchor points are arranged on different locations of each of the assembly sections, and the size of the back frame is variably configured by assembling the at least two adjacent main pieces through different anchor points. 
         [0011]    Wherein the anchor points are rivet holes, screw holes, non-hole rivet points, or welding points. 
         [0012]    Wherein the back frame includes a first main piece and a second main piece. The first main piece includes a first main portion and a first extended portion vertically extended from one end of the first main portion, and the second main piece includes a second main portion and a second extended portion vertically extended from one end of the second main portion. Wherein the first main portion and the second extended portion, and the second main portion and the first extended portion are respectively assembled together by the anchor points so as to form the back frame. 
         [0013]    Wherein a plurality of auxiliary supports are arranged between the first main portion and the second main portion, and two ends of the auxiliary supports respectively connects to the first main portion and the second main portion. 
         [0014]    Wherein the back frame includes two parallel, spaced apart first main pieces and two parallel, spaced apart second main pieces, and wherein ends of the first main pieces respectively connects with ends of the second main pieces by the anchor points so as to form the back frame. 
         [0015]    Wherein a plurality of auxiliary supports are arranged between the two first main pieces, and two ends of the auxiliary supports respectively connects to the first main pieces. 
         [0016]    Wherein the assembly sections of the main pieces further includes protrusions surrounding by the plurality of anchor points. 
         [0017]    Wherein the protrusions include a first protrusion and a second protrusion respectively arranged on the assembly sections of the two adjacent main pieces, and the second protrusion is received in as space limited by the first protrusion. 
         [0018]    Wherein the protrusions are integrally formed with the main pieces by compression. 
         [0019]    In another aspect, a liquid crystal device includes a back frame having at least two main pieces. The adjacent main pieces are assembled via assembly sections, and a plurality of anchor points are arranged on different locations of each of the assembly sections. The size of the back frame is variably configured by assembling the at least two adjacent main pieces through different anchor points. 
         [0020]    Wherein the anchor points are rivet holes, screw holes, non-hole rivet points, or welding points. 
         [0021]    Wherein the back frame includes a first main piece and a second main piece, the first main piece includes a first main portion and a first extended portion vertically extended from one end of the first main portion, and the second main piece includes a second main portion and a second extended portion vertically extended from one end of the second main portion. Wherein the first main portion and the second extended portion, and the second main portion and the first extended portion are respectively assembled together by the anchor points so as to form the back frame. 
         [0022]    Wherein the back frame includes two parallel, spaced apart first main pieces and two parallel, spaced apart second main pieces, and wherein ends of the first main pieces respectively connects with ends of the second main pieces by the anchor points so as to form the back frame. 
         [0023]    Wherein the assembly sections of the main pieces further include protrusions surrounding by the plurality or anchor points. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0024]      FIG. 1  is an exploded schematic view of the structure of a back frame in accordance with a first embodiment of the claimed invention. 
           [0025]      FIG. 2  is a schematic view of the structure of the back frame in accordance with the first embodiment of the claimed invention. 
           [0026]      FIG. 3  is a partial section view of assembly sections of the back frame of  FIG. 2 . 
           [0027]      FIG. 4  is an exploded schematic view of the assembly sections of  FIG. 2 . 
           [0028]      FIG. 5  is a partial schematic view illustrating one dimensional adjustment of the back frame of  FIG. 2 . 
           [0029]      FIG. 6  is a partial section view illustrating two dimensional adjustment of the back frame of  FIG. 2 . 
           [0030]      FIG. 7  is a partial schematic view of the back frame of  FIG. 2  after the two dimensional adjustment. 
           [0031]      FIG. 8  is an exploded schematic view of the structure of a back frame in accordance with a second embodiment of the claimed invention. 
           [0032]      FIG. 9  is a schematic view of the structure of the back frame in accordance with the second embodiment of the claimed invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0033]    Embodiments of the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. 
         [0034]      FIG. 1  is an exploded schematic view of the structure of a back frame in accordance with a first embodiment of the claimed invention. As shown, the back frame  100  includes a first main piece  110 , a second main piece  120 , and two auxiliary supports  150 . 
         [0035]    The first main piece  110  and the second main piece  120  are L-shaped and are assembled via assembly sections  130  to form an outer frame of the back frame  100 . 
         [0036]    Specifically, the first main piece  110  includes a first main portion  111  and a first extended portion  112  vertically extended from one end of the first main portion  111 . The second main piece  120  includes a second main portion  121  and a second extended portion  122  vertically extended from one end of the second main portion  121 . The first main portion  111  and the second extended portion  122 , and the second main portion  121  and the first extended portion  112  are respectively assembled together by a plurality of anchor points  140  of the assembly sections  130  so as to form the outer frame of the back frame  100  as shown in  FIG. 2 . 
         [0037]    As shown in  FIG. 2 , two ends of the auxiliary supports  150  respectively connects to the first main portion  111  and the second main portion  121 . The auxiliary supports  150  are parallel to the first extended portion  112  and the second extended portion  122 . In the embodiment, the auxiliary supports  150  increase the structural strength and stability of the back frame  100 . In other embodiments, the number of the auxiliary supports  150  may be one or more than one. 
         [0038]    In the embodiment, protrusions  160  are respectively arranged on the assembly sections  130  of the first main piece  110  and the second main piece  120  so as to increase the connecting strength of the assembly sections  130  of the back frame  100 . The protrusions  160  are integrally formed with the first main piece  110  and the second main piece  120  by compression.  FIG. 3  is a partial section view of the assembly sections of the back frame of  FIG. 2 . Referring to  FIGS. 2 and 3 , the protrusions  160  include a first protrusion  161  and a second protrusion  162 . The second protrusion  162  is arranged on the assembly sections  130  of the second main portion  121  and the first main portion  111 . The second protrusion  162  is arranged on the assembly sections  130  of the second main portion  121  and the first main portion  111 . The second protrusion  162  is received in a space limited by the first protrusion  161 , and may be slid according to the size of the back frame  100 . In addition, the top of the first protrusion  161  is closely adjacent to the top of the second protrusion  162 . 
         [0039]    In the embodiment, a support  163  is arranged in the bottom of the second protrusion  162  to prevent the protrusions  160  from being deformed due to stress from the light guiding plate and the liquid crystal panel during the assembly process of the back frame  100 . After the protrusions  160  is shaped by punching molding processes, the support  163  is respectively assembled on the first extended portion  112  of the first main piece  110  and on the second extended portion  122  of the second main piece  120 . In other embodiments, the second protrusion  162  may be a solid structure. 
         [0040]      FIG. 4  is an exploded schematic view of the assembly sections of  FIG. 2 . As shown in  FIG. 4 , the anchor points  140  are arranged to surround the protrusions  160 . The second main piece  120  includes four anchor points  141 ,  143 ,  144 ,  145 , and the first main piece  110  includes four anchor points  142 . The anchor points  142  includes a plurality of anchor points  142   a,    142   b,  . . . ,  142   n,  which are arranged to configure different sizes for the back frame  100 . The number of the anchor points on the second main piece  120  is not limited to four as described above, and may be adjusted according to different configurations. 
         [0041]    The anchor points  142   a,    142   b,  . . . ,  142   n  are arranged in matrix array. In the embodiment, the size of the back frame  100  not only may be variable by one dimensional adjustment in length or width, but also may be variable by two dimensional adjustment in length or width. Specifically, the auxiliary supports  150  are taken off when the back frame  100  is formed with the desired size and the anchor points  141  of the second main piece  120  are aligned with the anchor points  142   a,    142   b,  . . . ,  142   n  of the first main piece  110 . It is to be noted that the anchor points  141  are preferably selected as the reference point. After aligning the anchor point  141  and the anchor point  142   a,  the anchor points  143 ,  144 ,  145  are aligned with other anchor points of the first main piece  110 . In other embodiments, the anchor points  143 ,  144 ,  145  may be selected as the reference point. 
         [0042]    The processes of the above one dimensional adjustment and two dimensional adjustments are described as below. 
         [0043]    One Dimensional Adjustment: The first main piece  110  is pulled in the length direction of the back frame  100  (as indicated by arrow in  FIG. 5 ) when the back frame  100  with the desired size corresponding to anchor point  142   a  is needed. As shown in  FIG. 6 , the locations of the first protrusion  161  and the second protrusion  162  have changed. The anchor points  141  are aligned with the anchor point  142   a,  and the anchor points  143 ,  144 ,  145  are aligned with other anchor points on the first main piece  110 . In this way, after assembled, the length of the back frame  100  is increased. 
         [0044]    Two Dimensional Adjustment: The first main piece  110  is pulled in the length direction or the back frame  100  as described above and is pulled in the width direction of the back frame  100  (as indicated by arrow in  FIG. 7 ) when the back frame  100  with the desired size corresponding to anchor points  142   b,    142   n  is needed. The locations of the first protrusion  161  and the second protrusion  162  have changed (not shown). The anchor points  141  is aligned with the anchor point  142   b,    142   n,  and the anchor points  143 ,  144 ,  145  are aligned with other anchor points on the first main piece  110 . In this way, after assembled, the length and the width of the back frame  100  is increased. It is understood that the back frame  100  may be assembled by different ways. The anchor points  140  may be rivet holes, screw holes, non-hole rivet points, or welding points. 
         [0045]    Furthermore, after the anchor points  140  are fixed, the auxiliary supports  150  are fixed on the first main piece  110  and the second main piece  120 . It is to be noted that two ends of the auxiliary supports  150  include fixing members similar to the anchor points  140 .  FIG. 8  is an exploded schematic view of the structure of the back frame in accordance with a second embodiment of the claimed invention. In the embodiment, the back frame  200  includes two first main pieces  210 ,  220 , two second main pieces  230 ,  240 , the assembly sections  250 , and two auxiliary supports  270 . 
         [0046]    The difference between the first embodiment and the second embodiment resides in that the first main pieces  210 ,  220  and the second main pieces  230 ,  240  are bar-shaped. The first main pieces  210 ,  220  and the second main pieces  230 ,  240  are assembled together to form the outer frame of the back frame  200 . Specifically, the two first main pieces  210 ,  220  are parallel and spaced part from each other, and the two second main pieces  230 ,  240  are also parallel and spaced part from each other. Two ends of the first main piece  210  respectively connects with the two second main pieces  230  by the assembly sections  250 , and two ends of the first main piece  220  respectively connects with the second main pieces  230  and  240  by the assembly sections. Two ends of the auxiliary supports  270  respectively connect with the first main pieces  210 ,  220 . The auxiliary supports  270  are parallel to the second main pieces  230 ,  240  to form the back frame  200  as shown in FIG  9 . 
         [0047]    The structures and the mechanisms of the anchor points  260 , the auxiliary supports  270 , and the protrusions  280  are the same with the anchor points  140 , the auxiliary supports  150 , and the protrusions  160  disclosed in the first embodiment. 
         [0048]    In the second embodiment, the size of the back frame  200  may be changed with the one or two dimensional adjustment by engaging the anchor points  260  on the four assembly sections  250 . In the first embodiment, the size of the back frame  100  may be changed with the one or two dimensional adjustment by engaging the anchor points  140  on the assembly sections  130 . 
         [0049]    In other embodiments, the number and the location of the anchor points on the assembly sections, or the configurations of the first and second main pieces may be changed. The size of the back frame may be variable only by assembling the first and second main pieces via the anchor points in different locations. Especially, the object of the claimed invention may be easily achieved for back frames with similar size, such as the back frames with a sin range from 37 to 39 inches or from 46 to 48 inches. 
         [0050]    In addition, in one embodiment, a liquid crystal device includes the back frame  100  disclosed in the above first embodiment. In another embodiment, a liquid crystal device includes the back frame  200  disclosed in the above second embodiment. 
         [0051]    In view of the above, the first main pieces and the second main pieces with a plurality of anchor points arranged in different locations are assembled together to form the back frame. The first main pieces and the second main pieces may be manufactured by the same mold. The back frames assembled by the first main pieces and the second main pieces may have variable sizes. In this way, the mold cost and the development cycle may be reduced. 
         [0052]    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 invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.