Patent Publication Number: US-2020301205-A1

Title: Display device

Description:
FIELD 
     The subject matter herein generally relates to display devices, and more particularly to a display device having improved light leakage prevention and a method of making the display device. 
     BACKGROUND 
     Generally, display devices have various modules or structures which need to be joined together by specialized auxiliary structures. However, due to high structural matching precision requirements and special requirements of materials of the auxiliary structures, a manufacturing cost is high and versatility is poor, which results in poor light leakage prevention across different display devices. 
    
    
     
       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 a cross-sectional view of an embodiment of a display device. 
         FIG. 2  is a flowchart of an embodiment of a method for making a display device. 
     
    
    
     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 front frame  10 , a backlight module  20 , and a glass plate  30 . The glass plate  30  is disposed facing the backlight module  20 . The front frame  10  surrounds the backlight module  20  and the glass plate  30  and contacts the backlight module  20  and the glass plate  30 . 
     The glass plate  30  may be a liquid crystal display, such as a thin film transistor-liquid crystal display (TFT-LCD). 
     The front frame  10  includes a main body  11  and a connecting portion  12 . The main body  11  is disposed around the backlight module  20  and the glass plate  30 . The main body  11  includes an inner side surface  111  facing the backlight module  20  and the glass plate  30 . The connecting portion  12  extends from the inner side surface  111  into a gap between the backlight module  20  and the glass plate  30 . The backlight module  20  and the glass plate  30  are respectively located on opposite sides of the connecting portion  12 . 
     In one embodiment, the connecting portion  12  is substantially plate-shaped and extends perpendicularly from the inner side surface  111 . The main body  11  further includes an outer side surface  112  facing away from the backlight module  20  and the glass plate  30 . In one embodiment, the outer side surface  112  is a curved surface. 
     The backlight module  20  abuts against a side of the connecting portion  12  facing away from the glass plate  30 , and a liquid colloid is filled in between the backlight module  20  and the inner side surface  111  and cured to form a filling  40 . The filling  40  fills in a gap between the backlight module  20  and the inner side surface  111 . 
     The backlight module  20  includes a light guide plate  21 , a diaphragm  22 , and a backplane  23 . The light guide plate  21 , the diaphragm  22 , and the backplane  23  are sequentially stacked in a direction from the connecting portion  12  away from the glass plate  30 . The filling  40  is between the inner side surface  111  and the light guide plate  21 , the diaphragm  22 , and the backplane  23 . The diaphragm  22  may be one or a combination of a prism film, a diffusion film, a microprism film, a brightness enhancement film, a reflection film, and other suitable optical films. It can be understood that the backlight module can further include a backlight (not shown) disposed on the backplane  23 . 
     Because the filling  40  is formed by curing liquid colloid, even if a width of a gap between the inner side surface  111  and the light guide plate  21 , the diaphragm  22 , and the backplane  23  is inconsistent, the filling  40  adequately fills in the gap having inconsistent widths. 
     The liquid colloid may be a light-shielding optical glue, such as silica gel, so that the filling  40  prevents light leakage. A chemical composition and curing characteristics of the liquid colloid can be selected according to actual needs. The filling  40  fills in the gap between the backlight module  20  and the inner side surface  111 , thereby improving prevention of light leakage. 
     In one embodiment, the glass plate  30  and the connecting portion  12  are bonded together by an adhesive tape  50 . 
       FIG. 2  shows a flowchart of an embodiment of a method of making a display device. The method is provided by way of embodiment, as there are a variety of ways to carry out the method. The method described below can be carried out using the configurations illustrated in  FIG. 1 , for example, and various elements of the figure are referenced in explaining the example method. Each block shown in  FIG. 2  represents one or more processes, methods, or subroutines carried out in the example method. Furthermore, the illustrated order of blocks is by example only, and the order of the blocks can be changed. Additional blocks can be added or fewer blocks can be utilized, without departing from this disclosure. 
     At block S 1 , the backlight module  20  is placed on the connecting portion  12  of the front frame  10 . 
     The front frame  10  includes a main body  11  and a connecting portion  12 . The main body  11  surrounds the backlight module  20 , and the main body  11  includes an inner side surface  111  facing the backlight module  20 . The connecting portion  12  extends from the inner side surface  111 . 
     At block S 2 , the liquid colloid is filled by a dispensing device into the gap between the backlight module  20  and the main body  11 . 
     The dispensing device may be a mechanical arm, a three-axis platform, or a hand-held mechanism. 
     At block S 3 , the liquid colloid is solidified to form the filling  40 . 
     The liquid colloid is solidified by controlling an ambient temperature, humidity, and curing time according to curing conditions of the liquid colloid. 
     At block S 4 , the glass plate  30  is bonded to the side of the connecting portion  12  opposite to the backlight module  20 . 
     The glass plate  30  and the connecting portion  12  may be bonded together by the adhesive tape  50 . 
     The display device  100  can be applied in an electronic device (not shown), such as a television, a mobile phone, a computer, or the like that requires display function. 
     In summary, the display device  100  includes the filling  40  filled in between the backlight module  20  and the inner side surface  111 . Compared with the related art, not only is assembly of the display device  100  simplified and production and processing costs reduced, but also light leakage prevention is improved, and the display device  100  has high versatility of application. 
     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.