Patent Publication Number: US-2020305291-A1

Title: Display module of display device

Description:
FIELD 
     The subject matter herein generally relates to display devices, and more particularly to a display device having a borderless display module. 
     BACKGROUND 
     A liquid crystal display (LCD) is generally used in flat, thin display devices. Currently, a bezel of the LCD limits a full-screen potential of the LCD. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Implementations of the present disclosure will now be described, by way of embodiments, with reference to the attached figures. 
         FIG. 1  is an assembled, isometric view of an embodiment of a display device. 
         FIG. 2  is a cross-sectional view of a first embodiment of a display module of the display device in  FIG. 1 . 
         FIG. 3  is a cross-sectional view of a second embodiment of a display module of the display device in  FIG. 1 . 
         FIG. 4  is a cross-sectional view of a third embodiment of a display module of the display device in  FIG. 1 . 
         FIG. 5  is a cross-sectional view of a fourth embodiment of a display module of the display device in  FIG. 1 . 
         FIG. 6  is a cross-sectional view of a fifth embodiment of a display module of the display device in  FIG. 1 . 
         FIG. 7  is a cross-sectional view of a sixth embodiment of a display module of the display device in  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. Additionally, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein. 
     Several definitions that apply throughout this disclosure will now be presented. 
     The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or other word that “substantially” modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series and the like. 
       FIG. 1  shows an embodiment of a display device  100  including a support stand  10  and a display module  20 . The display module  20  is mounted on the support stand  10 . The display device  100  may be, but is not limited to, a television, a display monitor, a billboard, or the like. 
       FIG. 2  shows a schematic structural diagram of a first embodiment of a display module  20 . The display module  20  includes a display panel  21 , an optical film set  22 , a backplane  23 , two first bonding members  24 , and a second bonding member  25 . 
     The display panel  21 , the optical film set  22 , and the backplane  23  are stacked in sequence. One first bonding member  24  is disposed between the display panel  21  and the optical film set  22 , and a second first bonding member  24  is disposed between the optical film set  22  and the backplane  23  to bond the display panel  21 , the optical film set  22 , and the backplane  23  together. The second bonding member  25  is disposed on a peripheral side of the display panel  21 , the optical film set  22 , and the backplane  23 . The second bonding member  25  enhances a bonded connection of the display panel  21 , the optical film set  22 , and the backplane  23  and is configured to prevent light leakage. The second bonding member  25  is an outer side surface of the display module  20  and protects the side of the display module  20 . 
     The display panel  21  is substantially rectangular plate-shaped. The optical film set  22  is substantially the same size as the display panel  21  and includes a first adhering surface  221  facing the display panel  21  and a second adhering surface  222  facing the backplane  23 . A size of the backplane  23  is substantially the same as a size of the display panel  21 . The two first bonding members  24  are respectively uniformly applied on the first adhering surface  221  and the second adhering surface  222 . The second bonding member  25  is applied to the peripheral sides of the display panel  21 , the optical film set  22 , and the backplane  23 . In one embodiment, the display panel  21  is a liquid crystal display panel, and a surface of the display panel  21  is provided with a cover glass. The optical film set  22  may be a plurality, such that the plurality of optical film sets  22  are stacked, and every two adjacent optical film sets  22  are bonded together by a first bonding member  24 . 
     The first bonding members  24  may be a translucent optical adhesive or a double-sided adhesive tape. Specifically, the first bonding members  24  may be foam tape, ultraviolet glue, or hot melt adhesive. In addition, the first bonding members  24  may be other kinds of optical adhesives having light transmitting properties according to actual needs. 
     The second bonding member  25  is made of a non-transparent material. In one embodiment, the second bonding member  25  is silica gel. In other embodiments, the second bonding member  25  can be made of other kinds of light non-transmitting materials that do not have translucency. 
     In assembly, the backplane  23  is placed on a positioning carrier, and a dispensing device uniformly applies one first bonding member  24  on the backplane  23 . Then, the optical film set  22  is stacked on the backplane  23 , the other first bonding member  24  is uniformly applied on the first adhering surface  221 , and the display panel  21  is stacked on the first adhering surface  221 , so that the backplane  23 , the optical film set  22 , and the display panel  21  are bonded together. Then, a dispensing device applies the second bonding member  25  to the peripheral side of the display panel  21 , the optical film set  22 , and the backplane  23 . 
     It should be understood that the dispensing device is selected according to characteristics (viscosity, curing mode) of the bonding members and process parameters (dispensing accuracy, shape, and size) and the like. The dispensing device may be a mechanical arm, a three-axis platform, or a hand-held device. 
     The display module  20  bonds the display panel  21 , the optical film set  22 , and the backplane  23  together through the first bonding members  24  having light transmissibility and the second bonding member  25  made of non-transparent material. The second bonding member  25  improves a bonding connection of the display panel  21 , the optical film set  22 , and the backplane  23 . The second bonding member  25  is an outer side surface of the display module  20  and prevents light leakage and protects the side of the display module  20 . The display module  20  requires no bezel, which not only saves manufacturing costs, but also reduces thickness of the display module  20 . 
       FIG. 3  shows a schematic structural diagram of a second embodiment of a display module  30 . The display module  30  includes a display panel  31 , an optical film set  32 , a backplane  33 , two first bonding members  34 , and a second bonding member  35 . The optical film set  32  includes a first adhering surface  321  facing the display panel  31  and a second adhering surface  322  facing the backplane  33 . A difference between the second embodiment and the first embodiment is that the first bonding members  34  are respectively applied to an edge portion of the first adhesive surface  321  and the second adhesive surface  322  to bond the display panel  31  and the backplane  33 . 
       FIG. 4  shows a schematic structural diagram of a third embodiment of a display module  40 . The display module  40  includes a display panel  41 , an optical film set  42 , a backplane  43 , two first bonding members  44 , and a second bonding member  45 . The optical film set  42  includes a first adhering surface  421  facing the display panel  41  and a second adhering surface  422  facing the backplane  43 . A difference between the third embodiment and the first embodiment is that the display panel  41  includes a first extending portion  411  extending beyond an edge of the optical film set  42  and the backplane  43 , so that the second bonding member  45  is applied to the peripheral side of the optical film set  42  and the backplane  43  and bonded to the first extending portion  411 . 
       FIG. 5  shows a schematic structural diagram of a fourth embodiment of a display module  50 . The display module  40  includes a display panel  51 , an optical film set  52 , a backplane  53 , two first bonding members  54 , and a second bonding member  55 . The optical film set  52  includes a first adhering surface  521  facing the display panel  51  and a second adhering surface  522  facing the backplane  53 . The fourth embodiment includes features of the second embodiment (shown in  FIG. 3 ) and the third embodiment (shown in  FIG. 4 ). That is, the display panel  51  includes a first extending portion  511  extending beyond an edge of the optical film set  52  and the backplane  53 , the first bonding members  54  are respectively applied to an edge portion of the first adhesive surface  521  and the second adhesive surface  522  to achieve a bonded connection of the display panel  51 , the optical film set  52 , and the backplane  53 , and the second bonding member  55  is applied to the peripheral side of the optical film set  42  and the backplane  43  and bonded to the first extending portion  411 . 
       FIG. 6  shows a schematic structural diagram of a fifth embodiment of a display module  60 . The display module  60  includes a display panel  61 , an optical film set  62 , a backplane  63 , two first bonding members  64 , and a second bonding member  65 . The optical film set  62  includes a first adhering surface  621  facing the display panel  61  and a second adhering surface  622  facing the backplane  63 . The display panel  61  includes a first extending portion  611  extending beyond an edge of the optical film set  62 , and the backplane  63  includes a second extending portion  631  extending beyond the edge of the optical film set  62 . The first bonding members are respectively applied uniformly on the first adhering surface  621  and the second adhering surface  622 , and the second bonding member  65  is applied to a peripheral side of the optical film set  62  and bonded to the first extending portion  611  and the second extending portion  631 . 
       FIG. 7  shows a schematic structural diagram of a sixth embodiment of a display module  70 . The display module  70  includes a display panel  71 , an optical film set  72 , a backplane  73 , two first bonding members  74 , and a second bonding member  75 . The optical film set  72  includes a first adhering surface  721  facing the display panel  71  and a second adhering surface  722  facing the backplane  73 . The display panel  71  includes a first extending portion  711  extending beyond an edge of the optical film set  72 , and the backplane  73  includes a second extending portion  731  extending beyond the edge of the optical film set  72 . The display module  70  is similar to the display module  60  (shown in  FIG. 6 ), except that the first bonding members  74  are respectively applied to an edge portion of the first adhering surface  721  and the second adhering surface  722 . 
     The embodiments shown and described above are only examples. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including, the full extent established by the broad general meaning of the terms used in the claims.