Patent Publication Number: US-2020294977-A1

Title: Display apparatus

Description:
This application claims the benefit of Taiwan application Serial No. 108108771, filed Mar. 15, 2019, the subject matter of which is incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The invention relates in general to a display apparatus. 
     Description of the Related Art 
     For a current light emitting diode (LED) display apparatus applied with jointing technique, a substrate of a display device unit usually uses a transparent glass, and a plurality of the display device units are jointed as a module. The transparent glass used as the substrate has advantages of having excellent flatness and structural support properties, and can provide a stable platform for electronic elements such as a light emitting diode and so on to be disposed thereon under a tendency of thinning a substrate for a display apparatus. However, the transparent glass substrate would allow a user to observe all electronic elements other than a light emitting diode disposed on the transparent glass substrate, which results in a worse visual impression to a user. 
     SUMMARY OF THE INVENTION 
     The invention is directed to a display apparatus having a better display effect. 
     According to a respect of the present invention, a display apparatus is provided. The display apparatus comprises a transparent substrate, light emitting units, and an opaque film. The transparent substrate comprises a first transparent surface and a second transparent surface opposing to each other. The light emitting units are disposed over the first transparent surface. The opaque film covers on at least one of the first transparent surface and the second transparent surface. 
     The above and other aspects of the invention will become better understood with regard to the following detailed description of the preferred but non-limiting embodiment (s). The following description is made with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  to  FIG. 3  illustrate a method for manufacturing a display apparatus according to an embodiment. 
         FIG. 4  illustrates a substrate structure used for a display device according to another embodiment. 
         FIG. 5  illustrates a substrate structure used for a display device according to yet another embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Detailed descriptions of the invention are disclosed below with a number of embodiments. However, the disclosed embodiments are for explanatory and exemplary purposes only, not for limiting the scope of protection of the invention. Besides, secondary elements are omitted in the drawings of the embodiments, so that technical features of the present invention can be more clearly illustrated. 
       FIG. 1  to  FIG. 3  illustrate a method for manufacturing a display apparatus according to an embodiment. 
     Referring to  FIG. 1 , a substrate structure  102  is provided. The substrate structure  102  comprises a transparent substrate  104  and an opaque film  106 . The transparent substrate  104  comprises a first transparent surface  104 A and a second transparent surface  104 B opposing to the first transparent surface  104 A, and a transparent sidewall surface  104 C and a transparent sidewall surface  104 D between the first transparent surface  104 A and the second transparent surface  104 B. The opaque film  106  covers on the first transparent surface  104 A. In an embodiment, a material of the transparent substrate  104  comprises a transparent glass, such as a deep color transparent glass. The opaque film  106  may be formed on the transparent substrate  104  by a coating method or other suitable methods. A material of the opaque film  106  comprises a deep color glass, a dark color glass or a black color glass. 
     Referring to  FIG. 2 , a conductive element  108  passes through the transparent substrate  104  and the opaque film  106  of the substrate structure  102 . A material of the conductive element  108  may comprise a metal such as copper and so on, but is not limited thereto. A light emitting unit  110  is disposed on the opaque film  106  over the first transparent surface  104 A of the substrate structure  102 , and is electrically connected to the conductive element  108 . In an embodiment, the light emitting unit  110  comprises a micro-light emitting diode. The micro-light emitting diode may have a diagonal length within a range of 1 μm to 100 μm. An integrated circuit  112  is disposed on the second transparent surface  104 B of the substrate structure  102 . The light emitting unit  110  may be electrically connected to the integrated circuit  112  through the conductive element  108 . The integrated circuit  112  may comprise a driving circuit used for controlling the light emitting unit  110 , and so on. In an embodiment, the integrated circuit  112  may be electrically connected to the conductive element  108  through a conductive routing line (not shown) formed on the second transparent surface  104 B. In an embodiment, the light emitting unit  110  may be electrically connected to the conductive element  108  by a conductive routing line (not shown) formed on the first transparent surface  104 A. The light emitting unit  110  is not limited to arrange as being aligning or overlapping with the conductive element  108  as shown in  FIG. 2 . The light emitting unit  110  may be arranged to be miss-aligning or non-overlapping with the conductive element  108 , and may be electrically connected to the conductive element  108  by the conductive routing line (not shown). In an embodiment, one of the light emitting units  110  may be electrically connected to another of the light emitting units  110  by using a bonding method. As such, a first display device  100  can be formed. The first display device  100  can be also singly used as a display apparatus. In practical application, a plurality of the light emitting units  110  is included, and correspondingly, a plurality of the conductive elements  108  is included, but the present disclosure is not limited thereto. In other embodiments, the opaque film  106  may cover on the second transparent surface  104 B, but not cover on the first transparent surface  104 A, while the integrated circuit  112  is disposed on the opaque film  106  on the second transparent surface  104 B of the substrate structure  102 . In other words, the opaque film  106  is between the second transparent surface  104 B and the integrated circuit  112 . Alternatively, the opaque film  106  may cover on both of the first transparent surface  104 A and the second transparent surface  104 B. 
     The opaque film  106  can shield other elements on a non-light emitting side of the light emitting unit  110 , such as the conductive element  108 , the integrated circuit  112 , the conductive routing line, and so on, so as to avoid visual interference resulted from observing these elements by a user. The opaque film  106  can also be used to block a noise light on the non-light emitting side of the light emitting unit  110 . Therefore, the first display device  100  and the display apparatus using the first display device  100  can have better display effect and provide better visual impression to a user. 
     Referring to  FIG. 3 , a second display device  200  is provided. Differences between the second display device  200  in this embodiment and the first display device  100  are described as the following. The second display device  200  comprises a substrate structure  202  comprising an opaque film  206  covering on a second transparent surface  204 B of a transparent substrate  204 . A light emitting unit  210  is disposed on a first transparent surface  204 A of the transparent substrate  204 . An integrated circuit  212  is disposed on the opaque film  206  over the second transparent surface  204 B of the substrate structure  202 . The light emitting unit  210  may be electrically connected to the integrated circuit  212  through the conductive element  208 . In other embodiments, the opaque film  206  of the substrate structure  202  of the second display device  200  may further cover on the first transparent surface  204 A, but not cover on the second transparent surface  204 B. Alternatively, the opaque film  206  may cover on both of the first transparent surface  204 A and the second transparent surface  204 B. 
     Next, the first display device  100  and the second display device  200  are jointed together with the transparent sidewall surface  104 D of the first display device  100  facing a transparent sidewall surface  204 C of the second display device  200 . In other words, the transparent sidewall surface  104 D of the first display device  100  and the transparent sidewall surface  204 C of the second display device  200  are juxtaposed and attached with each other. By which, jointing the first display device  100  and the second display device  200  is realized. However, the present disclosure is not limited thereto. Jointing the first display device  100  and the second display device  200  may be realized by attaching the transparent sidewall surface  104 C with a transparent sidewall surface  204 D. Alternatively, jointing the first display device  100  and the second display device  200  may be realized by attaching the transparent sidewall surface  104 C with the transparent sidewall surface  204 C. Otherwise, jointing the first display device  100  and the second display device  200  may be realized by attaching the transparent sidewall surface  104 D with the transparent sidewall surface  204 D. 
     In embodiments, the display devices of more quantity may be jointed together. The display apparatus is not limited to the structure as shown in  FIG. 3 , and can be adjusted properly according to the concept of the present disclosure. Some variations of the substrate structures used for the display device for the display apparatus are described below as examples. 
       FIG. 4  illustrates a substrate structure  302  used for the display device according to another embodiment, which is different from the embodiment mentioned above (such as the substrate structure  102  as shown in  FIG. 1 ) in that an opaque film  306  further covers on the transparent sidewall surface  104 C and the transparent sidewall surface  104 D of the transparent substrate  104 . The opaque film  306  can further shield the transparent sidewall surface  104 C and the transparent sidewall surface  104 D from the external other elements or noise light that would affect the visual impression so as to improve display effect and improve visual impression to a user. Other variations can be understood. For example, the opaque film  306  may be also disposed on the second transparent surface  104 B, and the opaque film  306  may be not disposed on the first transparent surface  104 A. Otherwise, the opaque film  306  may be disposed on all of the first transparent surface  104 A, the second transparent surface  104 B, and the transparent sidewall surface  104 C and the transparent sidewall surface  104 D. 
       FIG. 5  is referred to, which illustrates a substrate structure  402  used for the display device according to yet another embodiment. In this embodiment, an opaque film  406  covers on the transparent sidewall surface  104 C and the transparent sidewall surface  104 D of the transparent substrate  104 . 
     Accordingly, the present invention discloses a display apparatus comprising a transparent substrate, light emitting units, and an opaque film. The transparent substrate comprises a first transparent surface and a second transparent surface opposing to each other. The light emitting units are disposed over the first transparent surface. The opaque film covers on at least one of the first transparent surface and the second transparent surface to shield internal electronic elements so as to avoid visual interference resulted from observing these elements by a user. Therefore, the display apparatus has better display effect, and provides better visual impression to a user. 
     While the invention has been described by way of example and in terms of the preferred embodiment(s), it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.