Abstract:
A procedure of packaging an electronic component is provided, comprising the following steps: step A for mount at which a conductor and a chip are temporarily mounted on a carrier removable, and next step B for encapsulation at which the conductor and the chip are encapsulated with colloid and mounted and then removed from the carrier so that the chipset after modeled without any substrate may be mounted for decreasing the costs of substrate use and design and the probability of damage of the substrate an chip due to the thermal expansion and increasing the yield factor of a finished product.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    This invention relates to a encapsulating method and particularly to a method of encapsulating an electronic component without any substrate into a unit. 
         [0003]    2. Description of Related Art 
         [0004]    With reference to  FIG. 1 , in a conventional method of encapsulating a semiconductor, 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, a procedure of encapsulating an electronic component is provided, comprising at least the following steps: step A for mount at which a conductor and a chip are temporarily mounted on a carrier movable, and next step B for encapsulation at which the conductor and the chip are adhered with colloid and mounted and then removed from the carrier. 
         [0007]    In this invention, the procedure of encapsulation the electronic component is provided, in which after being encapsulated, the chip is formed and mounted with the colloid but no carrier; the costs of substrate use and design may be decreased and no consideration of heat expansion between the substrate and the chip is made. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0008]      FIG. 1  is a schematic view illustrating the flow of of a conventional chip; 
           [0009]      FIG. 2  is a flow chart of a preferred embodiment of this invention; 
           [0010]      FIG. 3  is a schematic view illustrating the flow of preferred embodiment of this invention; 
           [0011]      FIG. 4  is a schematic view illustrating another embodiment of this invention; 
           [0012]      FIG. 5  is a schematic view illustrating a further embodiment of this invention; 
           [0013]      FIG. 6  is a schematic view illustrating a next embodiment of this invention; 
           [0014]      FIG. 7  is a schematic view illustrating one more embodiment of this invention; 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0015]    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. 
         [0016]    With reference to  FIGS. 2 and 3  illustrating a preferred embodiment, a procedure of encapsulating an electronic component is provided in this invention, comprising the following steps.
       A. Mount: a chipset  10  provided with a conductor  11  and a chip  12  are temporarily mounted on a carrier  20  movable, in which the carrier  20  may be formed with an adhesive material or the conductor  11  and the chip  12  is made to be adhered onto the carrier  20  or firmly mounted on a predetermined position of the carrier  20  for fear of displacement; further, outward around the chipset  10  mounted on the carrier  20 , a hollow frame  30  is provided in a predetermined shape for control or is provided in a predetermined shape in the manner of cutting or another modeling; in this embodiment, the chip is a light-emitting component that may be a circuit unit necessarily encapsulated into an integrated circuit, a passive component and the like.   B. Encapsulation: a functional colloid  13  is made to adhere to the chip  12  that is a fluorescent colloid in this invention making the chip  12  bring a predetermined color, or that may be another colloid, such as a heat dissipation colloid; after the fluorescent colloid is solidified, a pre-encapsulated colloid  40  is made to adhere to the carrier  20  and filled into the frame  30 ; after the colloid  40  firmly adheres with the chipset  10 , the carrier  20  is removed, thereby the encapsulated frame  30  in the shape being formed; the chip  12  and the conductor  11  may fully be adhere to and may be solidified inside the colloid  40  or may be partially exposed to the colloid  40  depending on the actual use.   C. Connection: a conduction portion  50  is provided between contact points  121  formed from the conductor  11  to the chip  12 , which is a conductive glue  51  in this invention, in order to make the conductor  11  conductive to the chip  12 ; besides, an insulated colloid layer  122  may be spread around the contact  121  of the chip  12  for fear of a short circuit of the chip  12 ; the conductive portion  50  may also be connected to the contact points  121  from the conductor  11  to the chip  12  with a bonding wire or in another manner of connection.   D. Sealing: a side of the conductive portion  50  on the chip  12  is further formed with the functional glue  13  that is also a fluorescent colloid spread thereby around the chip  12 , and the colloid  40  is formed at the side, thereby a sealed unit  60  being formed outside the chip  12  and the conductor  11 ; the chip  12  and the conductor  11  may alternatively be unsealed, if possible, and in the meantime, at step B for encapsulation, the chip  12  and the conductor  11  do not fully adhere to the colloid  40  and may sealed again with the colloid  40 .       
 
         [0021]    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. 
         [0022]    With reference to  FIG. 3 , in the modeled unit  60 , the chip  12  and the conductor  11  are directly mounted and sealed with no substrate but the colloid  40  in order to save the costs of substrate design and use and decrease the cost of production. Further, after the chip  12  is packaged with the colloid  40 , the thermal expansion causing the chip  12  to deform may be received directly by the colloid  40 , and the circuit of the unit  60  is not easily open due to the heat deformation, thereby making the reliability and service life of the chip  60  increase. Next, the unit  60  is encapsulated with only the colloid  40 , so its light-emitting area is not blocked, and the chip  12  may be given a light-emitting effect of complete period for a better light-emitting capability. 
         [0023]    With reference to  FIG. 4 , in this invention, another embodiment illustrating the procedure of packaging the electronic component is provided, and the embodiment is the same in a major function as the previous embodiment, so unnecessary details are not given here, in which at a side of the colloid  40  of the unit  60 , an active region  70 , such as a reflecting plate  71  that makes the chip  12  when serving as a light-emitting component reflect, or a diffusion film that makes the chip diffuse the light, may be added, in which the active region  70  may be differently structured depending on an actual demand for achievement of various types of application. 
         [0024]    With reference to  FIGS. 5 ,  6 , and  7 , a further embodiment illustrating the procedure of packaging the electronic component is provided, and the embodiment is the same in a major function as the previous embodiment, so unnecessary details are not given here, in which a heat dissipation device  80  is provided at a predetermined site of the chip  11 . With reference to  FIG. 5 , the heat dissipation device  80  may be mounted onto the chip  12  before the step of encapsulation, and the chip  11  and the heat dissipation  80  are directly adhered at the step of encapsulation. Or with reference to  FIG. 6 , after being encapsulated, the chip  12  is not yet partially arranged inside the colloid  40 , and after being combined with the chip  12 , the heat dissipation device  80  is adhered and sealed so that the device  80  may also be mounted and adhered onto the chip  12 . With reference to  FIG. 7 , after the connection of a conductive portion  50  of the unit  60 , the heat dissipation device  80  may also be arranged with a heat dissipation colloid  81  for the effects of sealing and heat dissipation. 
         [0025]    Here, the features and attainable expected effects of this invention are described again below:
       1. In the procedure of packaging the electronic component according to this invention, when the unit is modeled, the substrate is not required, thereby the costs of substrate design and use being decreased.   2. In the procedure of packaging the electronic component according to this invention, when the unit is modeled, the chip does not contact the substrate, thereby no consideration of heat expansion between the substrate and the chip being made.   3. In the procedure of packaging the electronic component according to this invention, when the unit is modeled, what is formed around the chip is the colloid; for example, when the chip is a light-emitting component, its light-emitting unit may give out light in a complete period for increasing the coverage of visible light; the functional layers around formed may also bring a better light-emitting effect after the unit is encapsulated.       
 
         [0029]    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.