Patent Publication Number: US-2013250206-A1

Title: Liquid Crystal Display Supporting Module and Liquid Crystal Displaying Monitor

Description:
FIELD OF THE INVENTION 
     The present invention relates to a technology field of display, and more particularly to a liquid crystal display supporting module and a liquid crystal display monitor. 
     DESCRIPTION OF PRIOR ART 
     As shown in  FIG. 1 , a conventional liquid crystal display (LCD) monitor is assembled by firstly attaching the LCD module to the supporting frame  12 , and then a front frame  11  is assembled to the supporting frame  12  by means of snap-in or screws. Then a LCD monitor is completed. 
     In general, a galvanized sheet metal is used to configure the front frame. However, in order to reduce the cost, the galvanized sheet metal has been replaced by a frame made from plastic material. Even the system integration manufacturers have adopted this practice and the plastic front frame has been used both for the LCD monitor and the LCD module. However, it has been widely known to the skill in the art that the plastic material can not shield the electromagnetic interference (EMI). Since there is a lot of electronic components assembled within the LCD module, such as a driving chip which is vulnerable to the EMI. As a result, a protection to such electronic component is extremity important and necessary. 
     SUMMARY OF THE INVENTION 
     The present invention provides a middle frame and a liquid crystal display monitor to resolve the prior art issues and with a metallic shield provided, the driving chip can be prevented from EMI. 
     In order to resolve the prior art issues, the present invention provides a liquid crystal display module configured with a plastic middle frame, a driving chip, a metallic shield and a backframe. The plastic middle frame includes a front wall located at a displaying plane, and a sidewall located at a sidewall of the displaying plane. The sidewall of the plastic middle frame is defined with retaining grooves. The driving chip is securely disposed on external surface of the sidewall of the middle frame. A metallic shield is securely disposed distant to the external surface of the sidewall of the middle frame to shield the driving chip from EMI, and retained within the retaining grooves. And a backframe attached to the middle frame. 
     Wherein the metallic shield is provided with retaining tabs at ends and which are securely received within the retaining grooves. 
     Wherein the supporting module further includes a printed circuit board which is securely attached to backframe and electrically interconnected to the driving chip via conductive wires. 
     Wherein the supporting module further includes a plastic lid covering the printed circuit board. 
     Wherein the supporting module further includes a chip-on-film deployed over the driving chip so as to securely attach the driving chip on the external surface of the sidewall of the plastic middle frame. 
     Wherein the conductive wires are embedded within the chip-on-film. 
     In order to resolve the prior art issues, the present invention provides a liquid crystal display module comprises a plastic middle frame having a front wall located at a displaying plane, and a sidewall located at a sidewall of the displaying plane. A driving chip is securely disposed on external surface of the sidewall of the middle frame. A metallic shield is securely disposed distant to the external surface of the sidewall of the middle frame to shield the driving chip from EMI. 
     Wherein the external wall of the sidewall of the plastic middle frame is defined with retaining grooves in which the metallic shield is securely attached therein. 
     Wherein the metallic shield is provided with retaining tabs at ends and which are securely received within the retaining grooves. 
     Wherein the supporting module further includes a backframe on which a printed circuit board is securely attached, the backframe is securely assembled to the middle frame, the printed circuit board is electrically interconnected to the driving chip via conductive wires. 
     Wherein the supporting module further includes a plastic lid covering the printed circuit board. 
     In order to resolve the prior art issues, the present invention provides a liquid crystal display monitor configured with a liquid crystal display supporting module and a plastic front frame. The monitor comprises a plastic front frame having a front wall located on a displaying surface, and a sidewall located at a sidewall of the displaying plane. The supporting module includes a plastic middle frame which includes a front wall located at a displaying plane, and a sidewall located at a sidewall of the displaying plane. A driving chip is securely disposed on external surface of the sidewall of the middle frame. A metallic shield is securely disposed between the driving chip and the sidewall of the middle frame to shield the driving chip from EMI. 
     Wherein the external wall of the sidewall of the plastic middle frame is defined with retaining grooves in which the metallic shield is securely attached therein. 
     Wherein the metallic shield is provided with retaining tabs at ends and which are securely received within the retaining grooves. 
     Wherein the supporting module further includes a backframe on which a printed circuit board is securely attached, the backframe is securely assembled to the middle frame, the printed circuit board is electrically interconnected to the driving chip via conductive wires. 
     Wherein the liquid crystal display monitor further includes a liquid crystal display panel supported on the plastic middle frame. A plastic lid covers the printed circuit board. And a plastic front frame engages to the plastic lid so as to securely support the liquid crystal display panel. 
     The present invention can be concluded with the following advantages: as differentiated from the existing prior art, the metallic shield is arranged on the plastic middle frame in a position adjacent to the driving chip so as to prevent the driving chip from being negatively affected by the EMI. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an illustrational view of a backframe of a prior art LCD backframe; 
         FIG. 2  is a perspective view of a LCD supporting module made in accordance with a preferred embodiment of the present invention; 
         FIG. 3  is a cross sectional view of the LCD supporting module taken along line S-S in  FIG. 2 ; and 
         FIG. 4  is a cross sectional view of a LCD supporting module and LCD monitor implemented with the embodiments shown in  FIGS. 2 and 3 . 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     Referring to  FIGS. 2 and 3 ,  FIG. 2  is a perspective view of a LCD supporting module made in accordance with a preferred embodiment of the present invention; and  FIG. 3  is a cross sectional view of the LCD supporting module taken along line S-S in  FIG. 2 . The LCD module made in accordance with the present invention includes a plastic middle frame  101 , a driving chip  102 , and a metallic shield  103 . The driving chip  102  is securely attached to the plastic middle frame  101 . The metallic shield  103  is secured to the plastic middle frame  101  in an area adjacent to the driving chip  102  so as to shield the external EMI to the driving chip  102 . 
     As shown in  FIG. 2 , the plastic middle frame  101  includes a front wall  1011  which is located on a displaying plane of the LCD supporting module, and a sidewall  1012  which is located on a side of the displaying plane. Referring to  FIG. 3 , the driving chip  102  is securely attached to the chip-on-film  106  and which is in turn securely attached to an outer surface of the sidewall  1012 . By this arrangement, the driving chip  102  is securely attached to the external surface of the sidewall  1012 . The chip-on-film  106  can be glued to the sidewall  1012  of the middle frame  101 . The metallic shield  103  is securely attached in a position which is distant to an outer surface of the sidewall  1012  of the middle frame  101 . In this preferred embodiment, the sidewall  1012  of the middle frame  101  is defined with retaining grooves  1013  and  1014 , and the metallic shield  1013  and  1014  can be retained therein. Retaining tabs are formed on the ends of the metallic shield  103 , and which can be securely retained within the grooves  1013  and  1014 . The tabs can be configured with an “S-shaped” configuration with which the tabs can be readily engaged within the grooves  1013  and  1014 . Its resuming force will securely retain the tabs within the grooves  1013  and  1014 . 
     In the preferred embodiment, the metallic shield  103  can be securely attached by other means, such as glue or screws. By these measurements, the metallic shield  103  can still be attached to the middle frame  101  adjacent to the driving chip  102 . Accordingly, the present invention will not be limited to this embodiment. 
     Referring to  FIG. 3 , the LCD supporting module further includes a backframe  104 , and a printed circuit board  105 . The backframe  104  and the middle frame  101  are assembled together, and the printed circuit board  105  is attached to the backframe  104 . The printed circuit board  105  is electrically interconnected to the driving chip  102  by means of conductive wires. The LCD supporting module further includes a plastic lid  107  which covers the printed circuit board  105  to provide a protection thereof. 
     The conductive wires are disposed within the chip-on-film  106  (COF, chip-on-film). 
     Referring to  FIG. 4  which is a cross sectional view of a LCD supporting module and LCD monitor implemented with the embodiments shown in  FIGS. 2 and 3 . As shown in  FIG. 4 , the LCD supporting module further includes a LCD panel  108  and a plastic front frame  109 . The LCD panel  108  is supported by the middle frame  101 , and then the plastic front frame  109  is engaged with the plastic lid  107  so as to securely position the LCD panel  108 . The driving chip  102  is electrically interconnected to the LCD panel  108  by those conductive wires embedded within the chip-on-film  106 . 
     The plastic front frame  109  includes a front wall  1091  arranged on a displaying surface of the LCD supporting module and a sidewall  1092  located on a sidewall of the displaying surface. The plastic middle frame  101  is arranged within the plastic front frame  109 . In addition, the external outer surface is the sidewall  1012  of the plastic middle frame  101  extends toward the sidewall  1092  of the plastic front frame  109 . In the preferred embodiment, the front wall  1011  of the plastic middle frame  101  is parallel to the front wall  1091  of the plastic front frame  109 . As clearly disclosed in  FIG. 4 , the driving chip  102  is disposed within a space between the front wall  1011  of the plastic middle frame  101 , and the front wall  1091  of the plastic front frame  109 , and the metallic shield  102  is disposed between the driving chip  102  and the front wall  1091  of the plastic front frame  109 . 
     Accordingly, the present invention provides a LCD supporting module and a LCD monitor made therefrom. By the provision of the metallic shield  103  attached to the plastic middle frame  101  and located adjacent to the driving chip  102 , the driving chip  102  can be well protected and shielded from EMI. 
     The above described is merely preferred embodiment of the present invention, and it is merely for illustration while not for limitation. As a result, any alternation and modification or any equivalents based on the specification as well as the drawings will be covered by the attached claims even they are applied to other fields of technology directly or indirectly.