Abstract:
An electronic element packaging is provided, the unit is formed with a colloid layer in a predetermined shape, and a chipset is adhered and mounted inside the colloid layer and comprises a predetermined chip and a conductor so that the unit is packaged without any substrate, thereby the costs of substrate use and design being decreased when the unit is fabricated. No consideration of the difference of heat expansion coefficient of the chip from that of substrate is made, thereby the reliability being increased and the service life being prolonged.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    This invention relates to an element packaging and particularly to a packaging of an electronic element without any substrate. 
         [0003]    2. Description of Related Art 
         [0004]    With reference to  FIG. 1 , in a conventional integrated circuit is based on a lead frame  1  as a main body, an adhesive resin  2  is coated on a lead frame  1 , a die  3  is connected and fixed onto the lead frame  1 , a bonding wire  4  is used to connect the lead frame  1  conductively to the die  3 , and finally a resin  5  is used for encapsulation, thereby an integrated circuit being formed. However, in the conventional method of encapsulation, materials are different in the coefficient of heat expansion, and thus the encapsulated component is easily damaged when being heated to cause a stress strain. 
         [0005]    Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above. 
       SUMMARY OF THE INVENTION 
       [0006]    In this invention, an electronic element packaging is provided, and the unit mainly comprises a colloid layer in a predetermined form, in which a chipset is adhered and mounted. The chipset comprises the determined chip and the predetermined conductor and could be adhered and mounted without any substrate. The chipset that does not need the substrate could be mounted to the colloid layer, thereby the costs of substrate design and use for increasing the competitive capability. Further, fewer substrate is used, damage of the heated stress strain could be decreased for increasing the yield factor and reliability of the unit. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  is a schematic view illustrating the encapsulation of a conventional chip; 
           [0008]      FIG. 2  is a schematic view illustrating the flow of preferred embodiment of this invention; 
           [0009]      FIG. 3  is a schematic view illustrating the preferred embodiment of this invention; 
           [0010]      FIG. 4  is a schematic view illustrating another embodiment of this invention; 
           [0011]      FIG. 5  is a 3D view of the appearance of a further embodiment of this invention; 
           [0012]      FIG. 6  is a schematic view illustrating a next embodiment of this invention for connection; 
           [0013]      FIG. 7  is a 3D view of the appearance of another embodiment of this invention; 
           [0014]      FIG. 8  is a schematic view illustrating a next embodiment of this invention for connection; and 
           [0015]      FIG. 9  is a schematic view illustrating a still next embodiment of this invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0016]    Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. 
         [0017]    With reference to  FIGS. 2 and 3 , a preferred embodiment of an electronic element packaging is provided in this invention. Before the unit  10  is formed, a chipset  20  comprising a conductor  22  and a chip  21  without any substrate is mounted onto a carrier  30  removable. In this invention, the chip  21  is a LED element and may be an integrated circuit, a passive component and the like that are necessarily packaged. The chip  21  is spread with a functional glue  23  that is a fluorescent colloid in this invention or another colloid, and then adhered with a colloid layer  40 ; after the colloid layer  40  solidifies, the carrier  30  is removed. After the carrier  30  is removed, a portion of the chipset  20  that is formed without any colloid layer  40  is connected to the conductor  22  or the chip  21  for electrical conduction by using a conductive part  50 , such as a conductive glue or a bonding wire, or the conductor  22  is directly mounted onto the chip  21  for electrical conduction. Next, the portion of the chipset  20 , which is not sealed, is adhered and mounted with the colloid layer  40 . If the chipset  20  does not need sealing, the step of sealing may also be omitted. Besides, the carrier  30  may be directly formed into a colloid layer that is never removed, and thus the chipset  20  is adhered and mounted after being adhered and mounted onto the carrier  30 . 
         [0018]    In order to further make apparent the structural features, applied skill and manners, and expected effects according to this invention, what are applied in this invention are in detail described, and it is thus believed that this invention is thoroughly and concretely apparent, as described below. 
         [0019]    With reference to  FIG. 3 , after the unit  10  is sealed, the chip  21  is a LED and become bright when turning ON. The chipset  10  that does not need any substrate may be mounted to the colloid layer  40  so that not only the costs of substrate design and use is saved but the flow of manufacturing the unit  10  is simplified. In the meantime, the chip  21  in the unit  10  may give out light in a complete period. Further, an active layer  60  is formed at the outside of the unit  10  and the active layer  60  according to this invention is structured with a reflecting layer  61  and a diffusion film  62 , in which the reflecting layer  61  may reflect a light given by the LED and the light is diffused and emitted by the diffusion film  62 . 
         [0020]    With reference to  FIG. 4 , another embodiment of an electronic element packaging is provided in this invention. The major structure is the same as that in the previous embodiment, so unnecessary details are not given here, in which a heat dissipation device  70  is provided on the unit  10  and may be arranged the chip  21  of the chipset  20  and then mounted with the colloid layer  40 , or after the colloid layer  40  adhere and mount the chipset  20 , the heat dissipation device  70  is mounted with the heat dissipation colloid  71  onto the unit  10  and sealed. 
         [0021]    With reference to  FIGS. 5 and 6 , another embodiment of the electronic element packaging is provided in this invention, and the major structure is the same as that in the previous embodiment, so unnecessary details are not given here, in which the unit  10  is provided with a power supply unit  80  that serves as a cell  81  and the conductor  22  of the chipset  20  of the unit  10  is divided into a first conductor  221  and a second conductor  222  that are respectively connected to a first contact  82  and a second contact  83  that are provided in the power supply unit  80 , in which a difference of voltage of the first contact  82  from the second contact  83  is generated. When the first conductor  221  and the second conductor  222  are respectively connected to the first contact  82  and the second contact  83 , they are electrically conductive to generate current. The unit  10  is round. The first conductor  221  is provided in the center of a circle of the unit  10  and connected to the first contact  82  of the power supply unit  80 . The second conductor  222  is a spring flake that protrudes from and arranged at a side of the unit  10 . Besides, the second contact  83  of the power supply unit  80  is formed with a circular ring accommodating the unit  10 , and the second contact  83  forms an insulated portion  831  and a conductive portion  832  at a side within the circular ring. The unit  10  may revolve in the power supply unit  80  and is conductive when the conductive portion  832  of second conductor  222  is connected to that of second contact  83 . Open circuit is formed when the insulated portion  831  of second conductor  222  is connected to that of second contact  83 , and thus the unit  10  becomes a switch. Further, the unit  10  is connected to an external circuit unit  90  that may serve as a light-emitting element, a passive element, an integrated circuit and the like for electrical driving according to various required applications. 
         [0022]    With reference to  FIGS. 7 and 8 , a next embodiment of the electronic element packaging is provided in this invention, and the major structure is the same as that in the previous embodiment, so unnecessary details are not given here, in which the unit  10  is piled onto the power supply unit  80 ; the first conductor  221  of the unit  10  is pivotally connected to the first contact  82  on the power supply unit  80 ; the unit  10  may pivot on the power supply unit  80  by using the first conductor  221 ; a bottom of the second conductor  222  of the unit  10  is connected a top face of the power supply unit  80 ; meanwhile, the top face of the power supply unit  80  is formed with the second contact  83  comprising the insulated portion  831  and the conductive portion  832 ; when the conductor  222  of the unit  10  is connected to the insulated portion  831  of the second contact  83 , the circuit of unit is open; when the conductive portion  832  of the second conductor  222  is connected to that of the second contact  83 , the unit  10  is conductive. 
         [0023]    With reference to  FIG. 9 , a still next embodiment of the electronic element packaging is provided in this invention, and the major structure is the same as that in the previous embodiment, so unnecessary details are not given here, in which contacts  211  are provided at two bottom sides of the chip  21  of chipset  20 , the colloid layer  40  is formed at only the bottom of the chip  21  for adhesion and mount, and after the contact  211  at the bottom of the chip  21  is connected to the top face by using the conductive portion  50 , the second colloid layer  40  is adhered and mounted; besides, after the top face of the colloid layer  40  is connected to the conductor  22  and the chip  21  by using the conductive portion  50 , a colloid layer  40  is adhered and mounted onto the top face. 
         [0024]    Here, the features and attainable expected effects of this invention are described again below: 
         [0025]    1. Regarding the electronic element packaging according to this invention, the chipset of the unit may be packaged without any substrate, which may reduce the costs of substrate use and design for the unit and thus may lower the possibility of damage caused by the thermal deformation for increasing its reliability and service life. 
         [0026]    While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.