Abstract:
An apparatus for compensating an image of a display includes a light incident surface, a light emitting surface, and a plurality of light guiding channels independent from each other. The light incident surface is configured to be adjacent to the display to receive the image of the display into the apparatus. An area of the light emitting surface being greater than an area of the light incident surface. Each light guiding channel extends from the light incident surface to the light emitting surface. The light guiding channels is configured for transmitting the image from the light incident surface to the light transmitting surface and expanding the image such that the expanded image is displayed on the light emitting surface.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is related to a U.S. patent application Ser. No. 14/164,139 entitled “APPARATUS FOR COMPENSATING IMAGE OF DISPLAY AND METHOD FOR MANUFACTURING SAME”, a U.S. patent application Ser. No. 14/164,140 entitled “APPARATUS FOR COMPENSATING IMAGE OF DISPLAY AND METHOD FOR MANUFACTURING SAME”, a U.S. patent application Ser. No. 14/164,137 entitled “DISPLAY ELEMENT, DISPLAY DEVICE AND JOINT DISPLAY”, and a U.S. patent application Ser. No. 14/164,118 entitled “DISPLAY DEVICE, JOINT DISPLAY AND BACKLIGHT MODULE”. This application also claims the foreign priority application filed in Taiwan as Serial No. 102104487 on Feb. 5, 2013, and Serial No. 102135215 on Sep. 27, 2013. These related applications are incorporated herein by reference 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to an apparatus for compensating an image of a display, a display including the image compensating apparatus, and a joint display including at least displays. 
     2. Description of Related Art 
     Display devices are widely used in consumer electronic products. An increasing need is to provide a big display device for displaying an image having big size. Yet, the big display device is expensive. Thus, there is a need for providing a number of display devices having limited sizes to cooperatively display the image having big size, and a need for providing a backlight module used in the display devices. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of at least one embodiment. In the drawings, like reference numerals designate corresponding parts throughout the various views. 
         FIG. 1  a schematic, isometric view of a first embodiment of a display of the present disclosure. 
         FIG. 2  is a partial cutaway view of the display. 
         FIG. 3  is a top view of the display of  FIG. 1 . 
         FIG. 4  is a cross-sectional view taken along IV-IV line of  FIG. 3 . 
         FIG. 5  is a schematic, isometric view of a second embodiment of a display of the present disclosure. 
         FIG. 6  is a top view of the display of  FIG. 5 . 
         FIG. 7  is a cross-sectional view taken along VII-VII line of  FIG. 6 . 
         FIG. 8  is a schematic, isometric view of a corner image compensating apparatus. 
         FIG. 9  is a front view of the corner image compensating apparatus. 
         FIG. 10  is a schematic, isometric view of a light guiding fiber. 
         FIG. 11  is a schematic, exploded view of a first embodiment of a joint display. 
         FIG. 12  is a schematic view of a second embodiment of a joint display. 
         FIG. 13  is a schematic, assembled view of the joint display of  FIG. 12 . 
         FIG. 14  is a schematic view of an alternative assembled embodiment of the joint display of  FIG. 13 . 
         FIG. 15  is a schematic view of a third embodiment of a joint display. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made to the drawings to describe various embodiments in detail. 
       FIG. 1  is a schematic, isometric view of a first embodiment of a display of the present disclosure. The display  100  includes a display panel  10 , an image compensating apparatus  110  set on the display panel  10 , and a support portion  120 .  FIG. 2  is a partial cutaway view of the display  100 . The display panel  10  defines a display region  11  and a non-display region  12  encircling a periphery of the display region  11 . The image compensating apparatus  110  is set on display region  11  along a border between the display region  11  and the non-display region  12 . A covering portion  115  of the image compensating apparatus  110  is extended to cover the non-display region  12 . The image compensating apparatus  110  is used to enlarge a display area of the display region  11  to cover the non-display region  12 . The support portion  120  is set on the non-display region  11  to support the image compensating apparatus  110 . In this embodiment, the support portion  120  resists again the covering portion  115  to support the covering portion  115 . It is understood that, for a joint display consisting of a number of display panels  10 , the image compensating apparatus  110  is set at a border between two adjacent display panels  10 . In this embodiment, there are four image compensating apparatuses  110  set on the non-display regions  12 . Referring to a top view of  FIG. 3 , each of the image compensating apparatuses  110  is shaped as an isosceles trapezoid. The four image compensating apparatuses  110  are connected end to end to form a rectangular frame. In the other alternative embodiment, the support portion can be omitted. 
     Referring to  FIG. 4 ,  FIG. 4  is a cross-sectional view of  FIG. 3  taken along IV-IV line. The four image compensating apparatuses  110  are set on a border of the display region  11  and adjacent to the non-display region  12 . At the corner of the display region  11 , two opposite ends of the image compensating apparatuses  110  are connected end to end via an inclined end surface to form a closed compensating frame. An included angel between the inclined end surface and a periphery of the display  100  is preferred to be 45 degree. 
     In this embodiment, the image compensating apparatus  110  is a triangular prism with a cross section shaped as an obtuse triangle. The support portion  120  is a prism with a side surface resisting again the image compensating apparatus  110 . The image compensating apparatus  110  includes a light emitting surface  112 , a light incident surface  113 , and an inclined surface  114 . In this embodiment, the light incident surface  113  is a bottom surface contacting with the display panel  10 . The light emitting surface  112  inclines to the light incident surface  113 . The light incident surface  113 , the light emitting surface  112 , and the inclined surface  114  are connected with each other. The light incident surface  113  and the inclined surface  114  from an obtuse triangle therebetween. The obtuse angle is preferred to be 135 degree. A projection of the light emitting surface  112  on the light incident surface  113  is greater than an area of the light incident surface  113 . 
     The image compensating apparatus  110  includes a number of light guiding channels  111 . In this embodiment, each of the light guiding channels  111  is a light guiding fiber. Because a light path of each light guiding fiber is independent from the light path of the other light guiding fiber, the light passing through each light guiding fiber do not disturb with the light passing through the other light guiding fiber. Each of the light guiding fibers extends from the light incident surface  113  to the light emitting surface  112 . An extending direction of the light guiding fibers is parallel to the inclined surface  114 . Each of the light guiding channels  111  extends along a substantially same direction. The light guiding channels  111  are arranged as a matrix. 
     In this embodiment, a width of the non-display region  12  is presented as W 1 . The bottom width of the support portion  120  is also W 1 . Both of a height of the support portion  120  and a height of the image compensating apparatus  110  are presented as W 3 . A bottom width of the image compensating apparatus  110  is presented as W 2 . The W 2  is greater than the W 1 . Preferably, the W 2  is a double of the W 1 . For example, when the W 1  is 3 millimeters (mm), the W 2  is 6 mm. 
     The display region  11  includes a number of pixels. Light from the pixels is enter the image compensating apparatus  110  via the light incident surface  113  and emits out from the light emitting surface  112 . Because the projection of the light incident surface  112  on the display panel  10  is greater than the area of the light incident surface  113 , an image of the display region  11  covered by the light incident surface  113  is transmitted to the light emitting surface  112  covering the non-display region  12 . Thus, the non-display region  12  is invisible to a viewer. The display  100  has a zero border effect. 
       FIG. 5  is a schematic, isometric view of a second embodiment of a display  200 . The display includes a display panel  20  and an image compensating apparatus  210  set on the display panel  20 . A difference between the image compensating apparatus  210  of the second embodiment and the image compensating apparatus  110  of the first embodiment is that the image compensating apparatus  210  includes a number of elongated side image compensating apparatuses  211  and a number of corner image compensating apparatuses  212 . A display effect of four corners of the display  200  is improved by the corner image compensating apparatuses  212 . 
     Referring to  FIGS. 6 and 7 , two adjacent side image compensating apparatuses  211  are connected via one of the corner image compensating apparatuses  212 . Referring to a top view of  FIG. 6 , four side image compensating apparatuses  211  and four corner image compensating apparatuses  212  are alternatively connected end to end to form a rectangular closed frame. The corner image compensating apparatuses  212  are correspondingly located at four corner of the display region  21 . 
     Referring to  FIG. 7 , the side image compensating apparatus  211  includes a number of light guiding channels  2111  arranged as a matrix. In this embodiment, each of the light guiding channels  2111  is a light guiding fiber with an even diameter. The light guiding channels  2111  extend from the light incident surface  213  to the light emitting surface  214 . The light guiding channels  2111  are parallel to the inclined surface  114 . A light from the display region  21  enters the image compensating apparatus  210  from the light incident surface  213  and emits out of the image compensating apparatus  210  by passing through the light guiding channels  2111 . Thus, the viewer can see the image on the light emitting surface  214 . 
     Referring to  FIGS. 8 and 9 , each of the corner image compensating apparatuses  212  includes a light output surface  2122 , a light input surface  2123 , and a sloping surface  2124 . The light input surface  2122  includes a pair of interconnecting sub-output surfaces  2122   a  and  2122   b . Preferably, the sub-output surface  2122   a  is not coplanar with the other sub-output surface  2122   b . In this embodiment, the pair of the sub-output surfaces  2122   a  and  2122   b  forms an included obtuse angle. In this embodiment, the light input surface  2123  is a bottom surface of the image compensating apparatus  210  contacting with the display region  21 . The sloping surface  2124  includes a pair of interconnecting sub-surfaces  2124   a  and  2124   b . The sloping surface  2124  correspondingly connects with the light output surface  2122  and the light input surface  2123 . The sub-output surfaces  2122   a  and  2122   b  are inclined to the light input surface  2123 . The sub-surfaces  2124   a  and  2124   b  correspondingly form an obtuse angle with the light input surface  2123 . Preferably, the obtuse angle is 135 degree. 
     Each of the corner image compensating apparatus comprises a number of light guiding channels  2121 . Each of the light guiding channels  2121  is combined with a number of alveolate light guiding fibers. The light guiding fibers extends from the light input surface  2123  to the sub-output surfaces  2122   a  and  2122   b . A diameter of the light guiding fibers of the corner image compensating apparatus  211  gradually increases in the extending direction. In detail, referring to a coordinate system of  FIG. 8 , when the light guiding fiber extends along a Z axis, radius of the light guiding fiber in X axis and Y axis are gradually increased. Also referring to  FIG. 10 , a cross-sectional area of the light guiding fiber gradually increases in the extending direction. 
     Because the projection of the light output surface  2122  on the display panel  20  is greater than the area of the light input surface  2123 , an image of the display region  21  covered by the light input surface  2123  is transmitted to the light output surface  2122  covering the non-display region  22 . Thus, the non-display region  22  is invisible to a viewer. The display  200  has a zero border effect. 
     Referring to  FIG. 11 , the image compensating apparatus  310  can be employed in a joint display  300 . The image compensating apparatuses  310  are set at a number of connecting seams between adjacent display panels  30  arranged as matrix. A zero border effect of the display  300  is realized by the image transmitting function of the image compensating apparatuses  310 . 
     In the other alternative embodiments of the present disclosure, the display  200  can be, but is not limited to, a liquid crystal display panel and a plasma display panel. The shape of the image compensating apparatus  310  can be changed according to the shape of the display  300 . The light input surface  2123  could be parallel to the light output surface  2122 . For example, a cross-section of the image compensating apparatus  310  is a isosceles trapezoid. The light output surface  2122  is a top surface of the isosceles trapezoid and the light input surface  2123  is a bottom surface of the isosceles trapezoid. The light guiding channel  2111  is combined with a number of light guiding thin plates, silica fibers, glass fibers, or the other light penetrating material. In the other embodiment, the support portion is omitted. The image compensating apparatus  310  is fastened to the display panel  30  via glue or the other fastener. 
       FIG. 12  is a schematic view of a second embodiment of a joint display  400 .  FIG. 13  is a schematic, assembled view of the joint display of  FIG. 12 . A difference between the joint display  400  and the first embodiment of the joint display  300  is that the joint display  400  includes two display panels  41  and  42  jointed together and two image compensating apparatuses  410  and  420  corresponding to the display panels  41  and  42 . 
     In detail, the joint display  400  includes a first display panel  41 , a second display panel  142  connected with the first display panel  141 , a first image compensating apparatus  410 , and a second image compensating apparatus  420 . The first display panel  41  includes a first display region  401  and a first non-display region  402  adjacent to the first display region  402 . The first display region  401  defines a first main display region  403  and a first periphery display region  404  located between the first main display region  403  and the first non-display region  402 . The first non-display region  402  is adjacent to the second display panel  42 . The second display panel  42  includes a second display region  405  and a second non-display region  406  adjacent to the second display region  405 . The second non-display region  406  is located between the first non-display region  402  and the second display region  405 . The second display region  405  defines a second main display region  407  and a second periphery display region  408 . 
     The first image compensating apparatus  410  is set corresponding to the first periphery display region  404 . The second compensating apparatus  420  is set corresponding to the first periphery display region  404 . The cross-sectional view of the first and second image compensating apparatus  410  and  420  is similar to the cross-sectional view of the image compensating apparatus of  FIGS. 2, 4, 5, and 9 . That is, each of the first and second image compensating apparatus  410  and  420  includes a light incident surface  413 , a light emitting surface  412 , and a number of independent light guiding channels  411  extending from the light incident surface  413  to the light emitting surface  412 . A part of the light emitting surface  412  is extended to cover the first non-display region  402 . The first and second image compensating apparatuses  410  and  402  is used to enlarge an image of the first and second periphery display regions  404  and  408  received by the light incident surface  413  and transmit to the light emitting surface  412 . The image enlarged by the first and second image compensating apparatuses  410  and  420  is extended out of sides of the first and second periphery display region  404  and  406  away from the first and second main display region  403  and  407 . 
     Preferably, the first image compensating apparatus  410  is fastened to the second image compensating apparatus  420  via an adhesive or the other fastener. The first and second compensating apparatuses  410  and  420  also can be integrated made. Thus, a display consisting of the display panel  41  and the image compensating apparatus  410  can display an image larger than its display region to make the joint display  400  displays an image larger than its display region. Because the image compensating apparatuses  410  and  420  is set at a joint between two display panels  41  and  42 , a zero border effect of the joint display  400  is achieved. 
     It is understood that, in this embodiment, a projection of the light emitting surface  412  of the first image compensating apparatus  410  on the joint display  400  covers the first non-display region  402  and a first periphery display region  403  and a projection of the light emitting surface  412  of the second compensating apparatus  420  on the joint display  400  covers the second non-display region  406  and the second periphery display region  407 , which make the joint display zero border. Referring to  FIG. 14 , in the other embodiment, the joint display  400  only includes the first image compensating apparatus  410 . The projection of the light emitting surface  412  on the joint display  400  covers the first non-display region  402 , a first periphery display region  403 , and the second non-display region  406 , which also make the joint display  400  zero border. 
       FIG. 15  is a schematic view of a third embodiment of the joint display  500 . A difference between the joint display  500  and the joint display  300  of the first embodiment illustrated in  FIG. 10  is that the joint display  500  includes three display panels  50  lined along a same direction, such as X axis, orderly and a number of the image compensating apparatuses  510  set on each display panel  50 . Similarly, in the third embodiment, each display panel  50  of the joint display  500  can display an image larger than its display region and the image compensating apparatuses  510  are set at the joints between each two adjacent display panels  50 , which make the joint display  500  zero border. 
     It is to be understood that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only; and that changes may be made in detail, especially in matters of shape, size, and arrangement of parts, within the principles of the embodiments, to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.