Patent Publication Number: US-2009231818-A1

Title: Electronic element module and electronic device using the same

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a divisional application of and claims the priority benefit of an U.S. application Ser. No. 11/160,393, filed on Jun. 22, 2005, now allowed, which claims the priority benefit of Taiwan application serial no. 94116052, filed on May 18, 2005. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electronic element module and an electronic device using the same. More particularly, the present invention relates to an electronic element module with better strength and an electronic device using the same. 
     2. Description of the Related Art 
     With the advancing by leaps and bounds of electronic technology, various kinds of electronic products have already been applied widely to our working and living, especially the electronic products, such as the most common information and electrical home appliances, etc. at present. In order to let these electronic products produce the special function, the electronic product nearly all has an electronic element module. The electronic element module includes a circuit board and a plurality of electronic elements mounted thereon. Wherein, the electronic elements are electrically connected to each other via the inner circuits of the circuit board. 
       FIG. 1A  is a schematic partial view showing a conventional electronic element module. With reference to  FIG. 1A , the conventional electronic element module  100  essentially comprises a circuit board  110  and a plurality of electronic elements  120  mounted thereon. Wherein, some of the electronic elements  120  such as capacitor essentially comprise a body  122  and two legs  124  connected thereto, and the ends of the legs  124  are connected to the circuit board  110 . 
     However, the electronic element module  100  sustains vibration and shock for a long time during the transportation, and the vibration and shock applied on the electronic element module  100  will be larger with weighty body  122  of the electronic elements  120 , especially. Moreover, because of each of the electronic elements  120  is connected to the circuit board  110  by two legs  124  only, the legs  124  with poor strength will fatigue easily owing to the vibration in the direction X shown in  FIG. 1A . Consequently, the legs  124  will be cut off, and the electronic elements  120  will be come off. With the result, the electronic element module  100  fails to work. Furthermore, the whole electronic device such as plasma display with the electronic element module  100  built-in will be broken. 
     To solve the issue described above, a silica gel (not shown) is put between the electronic elements  120  and the circuit board  110  in conventional to enhance the bonding strength among the electronic elements  120  and the circuit board  110 . However, this solution can&#39;t be used while the electronic elements  120  are arranged with high density. 
     Moreover, another type of electronic elements that called as “Surface Mounted Device, SMD” is popularly applied in various electronic products.  FIG. 1B  is a cross section view showing a conventional surface mounted electronic element. With reference to  FIG. 1B , the conventional surface mounted electronic element  160  has two terminals  162  that electrically connect to two contacts  172  on a circuit board  170  correspondingly with the solder  180 . However, after the surface mounted electronic element  160  has been mounted on the circuit board  170 , a gap G 10  exists between the surface mounted electronic element  160  and the circuit board  170 . Consequently, the gap G 10  will make the noises during the operating of the surface mounted electronic element  160  be resonated and amplified, and the user will be discomfort. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention is directed to provide an electronic element module with less noise and higher bonding strength among the electronic elements and the circuit board thereof. 
     The present invention is also directed to provide an electronic device with better reliability. 
     According to an embodiment of the present invention, an electronic element module is provided. The electronic element module essentially comprises a circuit board and a plurality of electronic elements. The circuit board has a plurality of leg-holes, and each of the electronic elements includes a body and a plurality of legs that connected to the body. Wherein, the bodies of the electronic elements are glued each other, and the legs of the electronic elements are partially plugged in the leg-holes. 
     In an aspect of the invention for the foregoing electronic element module, the electronic elements may include a first element and a second element. The leg-holes corresponding to the first element are arranged in a line that locates in a first direction; the leg-holes corresponding to the second element are arranged in a line that locates in a second direction; and the first direction can be perpendicular to the second direction. 
     In other aspect of the invention for the foregoing electronic element module, the electronic elements may include a first element, a second element and a third element. The leg-holes corresponding to the first element are arranged in a line that locates in a first direction; the leg-holes corresponding to the second element are arranged in a line that locates in a second direction; the leg-holes corresponding to the third element are arranged in a line that locates in a third direction; and the first direction, the second direction and the third direction construct a triangle or intersect in one point. Wherein, the triangle is a regular triangle, for example. 
     In another aspect of the invention for the foregoing electronic element module, the electronic elements may include a first element, a second element, a third element and a fourth element. The leg-holes corresponding to the first element are arranged in a line that locates in a first direction; the leg-holes corresponding to the second element are arranged in a line that locates in a second direction; the leg-holes corresponding to the third element are arranged in a line that locates in a third direction; the leg-holes corresponding to the fourth element are arranged in a line that locates in a fourth direction; and the first direction, the second direction, the third direction and the fourth direction construct a quadrangle or intersect in one point. Wherein, the quadrangle is square, for example. 
     According to another embodiment of the present invention, an electronic element module is provided. The electronic element module essentially comprises a circuit board and at least an electronic element. The circuit board has a plurality of contacts. The electronic element is disposed on the circuit board with a gap therebetween. The electronic element has a plurality of terminals that electrically connect to the contacts correspondingly, and the gap is filled with a glue. 
     In an aspect of the invention for the foregoing electronic element module, the electronic element may include a capacitor. Moreover, the glue may include epoxy resin. 
     According to another embodiment of the present invention, an electronic device with the forgoing electronic element module that said two kinds of the electronic elements are used therein is provided. In an aspect of the invention, the foregoing electronic device may include a display panel, and the display panel is electrically connected to electronic element module. Wherein, the display panel may be a plasma display panel (PDP), a liquid crystal display panel (LCD panel) or an organic electro-luminescence display panel (OELD panel). 
     Accordingly, the electronic element module and the electronic device using the same of this invention have better endurance in shock and vibration, such that the reliability of the electronic element module and the electronic device can be improved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. 
         FIG. 1A  is a schematic partial view showing a conventional electronic element module. 
         FIG. 1B  is a cross section view showing a conventional surface mounted electronic element. 
         FIG. 2  is a schematic partial view showing an electronic element module according to an embodiment of the present invention. 
         FIGS. 3˜5  are schematic top views showing the electronic element module according to the present invention with two, three and four glued electronic elements, respectively. 
         FIG. 6  is a cross section view showing an electronic element module according to another embodiment of the present invention. 
         FIG. 7  is a block diagram showing an electronic device according to an embodiment of the present invention. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
       FIG. 2  is a schematic partial view showing an electronic element module according to an embodiment of the present invention. With reference to  FIG. 2 , the electronic element module  200  in this embodiment essentially comprises a circuit board  210  and a plurality of electronic elements  220 . The circuit board  210  has a plurality of leg-holes  212 . Each of the electronic elements  220  includes a body  222  and a plurality of legs  224  that connected to the body  222 . In this embodiment, the number of the legs  224  in each of the electronic elements  220  is two, for example. But the number of the legs  224  in each of the electronic elements  220  could be three or more. Moreover, the bodies  222  of several of the electronic elements  220  are glued to each other. The bodies  222  may glue by setting silica gel therebetween. Of course, the bodies  222  may glue by setting other gel, twin adhesive or other appropriate method. The legs  224  of the electronic elements  220  are partially plugged in the leg-holes  212  by welding or other methods. Therefor, the legs  224  of the electronic elements  220  could be fixed in the leg-holes  212 , and the electronic elements  220  can be electrically connected to other elements via the inner circuits of the circuit board  210 . 
     The feature of the electronic element module in the present invention is that: in a group of the electronic elements  220  that the bodies  222  thereof are glued to each other, the leg-holes  212  corresponding to the different electronic elements  220  are arranged in different rows. In other words, the leg-holes  212  corresponding to the group of electronic elements  220  that the bodies  222  thereof are glued to each other will not be arranged in one line. With the legs  224  distributed in various directions, the group of electronic elements  220  that the bodies  222  thereof are glued to each other will have better endurance in shock and vibration from any directions. Therefor, the break of the legs  224  caused by fatigue and the coming off of the electronic elements  220  can be avoided. 
     Moreover, the circuit board  210  in this embodiment can be a printed circuit board (PCB) or others. Certainly, in the electronic element module  200 , elements such as driving chip, memory chip, interface slot or others may be assembled on the circuit board  210  as need. In the  FIG. 2 , we focus on the electronic elements  220  with legs  224 , and the other parts are omitted in there. 
     In the electronic element module  200  of this embodiment, the arrangements of the legs  224  of the electronic elements  220  depend on the amount of the group of electronic elements  220  that glued together. The arrangements of the legs  224  of the electronic elements  220  will be introduced with two, three or four electronic elements  220  in one group. Moreover, if the electronic element module  200  has more electronic elements  220 , the electronic elements  220  can be grouped into several groups, or the leg-holes  212  corresponding to different electronic elements  220  can be all arranged in different rows. Certainly, the arrangement of the locations of the leg-holes  212  prefers to be implemented during the fabrication of the circuit board  210 . 
       FIGS. 3˜5  are schematic top views showing the electronic element module according to the present invention with two, three and four glued electronic elements, respectively. 
     With reference to  FIG. 3 , when two electronic elements  220  are glued together, the leg-holes  212  corresponding to one of the electronic elements  220  may arranged in a line that locates in a direction D 1 , and the leg-holes  212  corresponding to the other electronic element  220  may arranged in a line that locates in a direction D 2 . Wherein, the direction D 1  prefers to be perpendicular to the second direction D 2 . Naturally, the direction D 1  does not restrict to be perpendicular to the second direction D 2 , but the direction D 1  should not coincide to the second direction D 2 . With the forging design, the bonding strength among the electronic elements  220  and the circuit board  210  could be enhanced. 
     With reference to  FIG. 4 , when three electronic elements  220  are glued together, the leg-holes  212  corresponding to this three electronic elements  220  may arranged in three lines that locates in directions D 3 , D 4  and D 5 , respectively. Wherein, the directions D 3 , D 4  and D 5  may construct a triangle therebetween. Meanwhile, the triangle is better to be a regular triangle. Naturally, the directions D 3 , D 4  and D 5  could intersect in one point to form an actinoid-shap (not shown in  FIG. 4 ), for example. 
     With reference to  FIG. 5 , when four electronic elements  220  are glued together, the leg-holes  212  corresponding to this four electronic elements  220  may arranged in four lines that locates in directions D 6 , D 7 , D 8  and D 9 , respectively. Wherein, the directions D 6 , D 7 , D 8  and D 9  may construct a quadrangle therebetween. Meanwhile, the quadrangle is better to be a square. Naturally, the directions D 6 , D 7 , D 8  and D 9  could intersect in one point to form an actinoid-shap (not shown in  FIG. 5 ), for example. 
       FIG. 6  is a cross section view showing an electronic element module according to another embodiment of the present invention. With reference to  FIG. 6 , the electronic element module  250  essentially comprises a circuit board  270  and at least an electronic element  260 . The circuit board  270  has a plurality of contacts  272  thereon. The electronic element  260  is disposed on the circuit board  270  with a gap G 20  therebetween. Meanwhile, the electronic element  260  has a plurality of terminals  262  that electrically connect to the contacts  272  of the circuit board  270  correspondingly with a solder  280 , for example. In other words, the electronic element  260  in this embodiment can be the surface mounted electronic element. In general, the electronic element  260  could be the resistance, capacitor, inductor, jumper . . . etc. Furthermore, the gap G 20  between the electronic element  260  and the circuit board  270  is filled with a glue  290 . The glue  290  could be the epoxy resin or others. As described in above, since the gap G 20  is filled with the glue  290 , the noises accompanied with the vibration of the electronic element  260  and the circuit board  270  will be decreased, and the noises will not be resonated and amplified by the gap. 
       FIG. 7  is a block diagram showing an electronic device according to an embodiment of the present invention. With reference to  FIG. 7 , the electronic device  300  of this embodiment could be a display, air conditioner, refrigerator or other electronic devices, and the electronic element module  200 , the electronic element module  250  mentioned in above embodiments or combination thereof is one of the components of the electronic device  300 . Herein, the description of the electronic element module  200  and  250  is omitted. If the electronic device  300  is a display, it may further includes a display panel  310  that electrically connected to the electronic element module  200  and/or the electronic element module  250 , and the electronic element module  200  and/or the electronic element module  250  could be used to control the display panel  310 . Wherein, the display panel  310  can be a plasma display panel, a liquid crystal display panel or an organic electro-luminescence display panel. Moreover, while the display panel  310  is liquid crystal display panel, the electronic device  300  may further includes a back light module (not shown) for providing the surface light source to the liquid crystal display panel. Because the electronic element module  200  and/or the electronic element module  250  built-in the electronic device  300  has better endurance in shock and vibration, the electronic device  300  could be keep away from the damage in the process of transportation. Consequently, the reliability of the electronic device  300  could be improved after received by the customers. 
     Accordingly, because of the leg-holes corresponding to the different electronic elements are arranged in different rows in the electronic element module and the electronic device using the same of this invention, and the adjacent electronic elements are glued together, the legs in different rows could resist more shock and vibration. Else, since the gap between the electronic element  260  and the circuit board  270  is filled with glue, the generation of the noises and the amplification of the noises can be restrain. Consequently, the reliability of the electronic element module and the electronic device could be raised. 
     It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.