Patent Publication Number: US-9425503-B2

Title: Antenna pattern frame, method and mold for manufacturing the same, and electronic device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation of U.S. application Ser. No. 12/649,820 filed Dec. 30, 2009, entitled “Antenna Pattern Frame, Method and Mold for Manufacturing the same, and Electronic Device” which claims the priority of Korean Patent Application No. 10-2009-0035637 filed on Apr. 23, 2009, in the Korean Intellectual Property Office, the disclosure of which is incoporated herein by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an antenna pattern frame having an antenna radiator on a surface thereof, a method and mold for manufacturing the same, and an electronic device, and more particularly, to an antenna pattern frame having, on a surface thereof, an antenna radiator embedded in an electronic device case, a method and mold for manufacturing the same, and an electronic device. 
     2. Description of the Related Art 
     Mobile communications terminals such as cellular phones, personal digital assistants (PDAs) and laptop computers, which support wireless communications, are indispensable devices in modern society. Functions including CDMA, wireless LANs, GSM and DMB have been added to these mobile communications terminals. One of the most important components that enable these functions is associated with antennas. 
     Antennas being used in these mobile communications terminals have advanced from external antennas, such as rod antennas or helical antennas, to internal antennas that are disposed inside terminals. 
     External antennas are susceptible to damage by external shock, while internal antennas increase the volume of terminals. 
     In order to solve these problems, research has been undertaken to manufacture antennas that are formed integrally with mobile communications terminals. 
     In order that antennas are formed integrally with terminals, a method of bonding flexible antennas to terminal bodies using adhesives is used. Recently, a method of forming antenna films by molding has been proposed. 
     However, when flexible antennas are bonded by simply using adhesives, the reliability of these antennas is reduced as the adhesiveness decreases. Besides, this also causes harm to the appearance of the terminals, lessening emotional quality for consumers. 
     In addition, when antenna films are used, product stability can be ensured. However, a process of bonding an antenna to a film is difficult to perform and manufacturing costs are also increased. 
     SUMMARY OF THE INVENTION 
     An aspect of the present invention provides an antenna pattern frame having an antenna radiator with a ground portion fixed to a surface thereof, a method of manufacturing the same, and a mold for manufacturing the same. 
     An aspect of the present invention also provides an electronic device having a case in which an antenna radiator having a ground portion is embedded. 
     According to an aspect of the present invention, there is provided an antenna pattern frame including: a radiator having an antenna pattern portion transmitting and receiving a signal; a ground portion extending from the antenna pattern portion; a connection portion connecting the antenna pattern portion and the ground portion to be arranged in different planes; and, a radiator frame manufactured by injection molding on the radiator so that the antenna pattern portion may be provided on one side of the radiator frame and the connection terminal portion may be provided on the other side thereof, the radiator frame allowing the antenna pattern portion to be embedded in the electronic device case. 
     The radiator may further include a connection terminal portion provided in a different plane from the antenna pattern portion, provided on the other side of the radiator frame and transmitting the signal to a circuit board of the electronic device. 
     The connection portion may be provided by bending the radiator, the ground portion may be provided by bending the connection portion, and the connection portion may be provided through the radiator frame. 
     The ground portion may be supported by a ground portion support stepped with respect to the radiator frame. 
     A contact pin hole may be provided in the radiator so that a contact pin of a mold is inserted into the contact pin hole during injection molding to thereby prevent a movement of the radiator inside the mold. 
     A guide pin hole may be provided in the radiator so that a guide pin of a mold is inserted into the guide pin hole during injection molding to thereby prevent a movement of the radiator inside the mold. 
     According to another aspect of the present invention, there is provided a method of manufacturing an antenna pattern frame, the method including: providing a radiator having an antenna pattern portion receiving a signal, a ground portion arranged in a different plane from the antenna pattern portion, and a connection portion connecting the antenna pattern portion and the ground portion; arranging the radiator in a mold having a space receiving the radiator; and injecting a resin material into the space through a resin material injection portion provided in the mold so that the resin material injected into the space forms a radiator frame allowing the antenna pattern portion to be embedded in an electronic device case. 
     A guide pin, a contact pin or a guide pin and a contact pin, formed in the mold, may be inserted into or make contact with a guide pin hole, a contact pin hole or a guide pin hole and a contact pin hole formed in the radiator. 
     The method may further include forming a connection terminal portion on the other side of the radiator frame, wherein the connection terminal portion is arranged in the mold having a recess receiving the connection terminal portion. 
     The antenna pattern portion may be arranged in contact with one surface of the mold, and the ground portion or the connection terminal portion may be arranged in contact with the other surface of the mold. 
     According to another aspect of the present invention, there is provided a mold of manufacturing an electronic device case, the mold including: an upper or lower mold receiving a radiator having an antenna pattern portion, a ground portion, and a connection portion connecting the antenna pattern portion and the ground portion to be arranged in different planes; and a resin material injection portion provided through the upper mold, the lower mold, or the upper and lower molds, the resin material injection portion through which a resin material is injected into a space created between the upper and lower molds when the upper and lower molds are joined so that the space therebetween forms a radiator frame allowing the antenna pattern portion to be embedded in the electronic device case. 
     A guide pin, a contact pin or a guide pin and a contact pin, inserted into or making contact with a guide pin hole, a contact pin hole or a guide pin hole and a contact pin hole provided in the radiator frame, may be provided in the upper mold, the lower mold or the upper and lower molds. 
     The mold may further include a connection terminal portion provided on the other side of the radiator frame, wherein a radiator support portion forming recess may be provided in the upper mold, the lower mold, or the upper and lower molds to form a radiator support portion receiving the connection terminal portion and supporting the connection terminal portion. 
     According to another aspect of the present invention, there is provided an electronic device including: a radiator frame manufactured by injection molding on a radiator having an antenna pattern portion, a ground portion and a connection portion connecting the ground portion and the connection portion to be arranged in different planes so that the antenna pattern portion may be provided on one side of the radiator frame and the ground portion may be provided on the other side thereof; a case coupled with the radiator frame so that the antenna pattern portion is embedded in the case, and receiving the radiator frame so that the ground portion is connected to a ground; and a circuit board electrically connected to the radiator. 
     The radiator may include a connection terminal portion provided on the other side of the radiator frame, and the connection terminal portion may make contact with the circuit board to transmit a signal thereto. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: 
         FIG. 1  is a schematic perspective view, with a cut-out portion, a case of a mobile communications terminal, which is an electronic device, according to an exemplary embodiment of the present invention; 
         FIG. 2  is a schematic perspective view illustrating an antenna pattern frame according to a first embodiment of the present invention; 
         FIG. 3  is a rear perspective view illustrating the antenna pattern frame of  FIG. 2 ; 
         FIG. 4  is a cross-sectional view taken along the line A-A of  FIGS. 2 and 3 ; 
         FIG. 5  is a schematic sectional view illustrating an antenna pattern frame according to a second embodiment of the present invention; 
         FIG. 6  is a schematic sectional view illustrating an antenna pattern frame according to a third embodiment of the present invention; 
         FIG. 7  is a schematic sectional view illustrating an antenna pattern frame according to a fourth embodiment of the present invention; 
         FIG. 8  is a schematic perspective view illustrating a radiator that is used to manufacture an antenna pattern frame according to an exemplary embodiment of the present invention; 
         FIG. 9  is a schematic sectional view illustrating a first embodiment of a mold for manufacturing an antenna pattern frame in order to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the present invention; 
         FIG. 10  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 9 ; 
         FIG. 11  is a schematic sectional view illustrating a second embodiment of a mold for manufacturing an antenna pattern frame in order to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the present invention; 
         FIG. 12  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 11 ; 
         FIG. 13  is a schematic sectional view illustrating a third embodiment of a mold for manufacturing an antenna pattern frame in order to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the present invention; 
         FIG. 14  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 13 ; 
         FIGS. 15A through 15D  are schematic perspective views illustrating the shape of an antenna radiator that is used to fix a radiator having an antenna pattern to an antenna pattern frame according to an exemplary embodiment of the present invention; 
         FIG. 16  is an exploded perspective view illustrating a case of a mobile communications terminal that is an electronic device having an antenna pattern radiator is embedded therein according to an exemplary embodiment of the present invention; 
         FIG. 17  is a schematic view illustrating a first embodiment of a method of manufacturing an electronic device case having an antenna pattern radiator embedded therein according to an exemplary embodiment of the present invention; 
         FIG. 18  is a schematic view illustrating a mold for manufacturing an electronic device case that is used to perform a second embodiment of a method of manufacturing an electronic device case having an antenna pattern radiator embedded therein according to an exemplary embodiment of the present invention; 
         FIG. 19  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 18 ; 
         FIG. 20  is a schematic perspective view illustrating an antenna pattern radiator having a ground portion according to another exemplary embodiment of the present invention; 
         FIG. 21  is a schematic perspective view illustrating an antenna pattern radiator having a ground portion according to another exemplary embodiment of the present invention; 
         FIG. 22  is a schematic sectional view illustrating a mold for manufacturing an antenna pattern frame that is used to perform a method of manufacturing an antenna pattern frame having a ground portion according to another exemplary embodiment of the present invention; and 
         FIG. 23  is a schematic exploded perspective view illustrating a laptop computer that is an electronic device to which an antenna pattern frame having a ground portion is applied according to another exemplary embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. While those skilled in the art could readily devise many other varied embodiments that incorporate the teachings of the present invention through the addition, modification or deletion of elements, such embodiments may fall within the scope of the present invention. 
     In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like components. 
       FIG. 1  is a schematic perspective view illustrating, with a cut-out portion, a case of a mobile communications terminal that is an electronic device according to an exemplary embodiment of the invention.  FIG. 2  is a schematic perspective view illustrating an antenna pattern frame according to a first embodiment of the invention.  FIG. 3  is a rear perspective view illustrating the antenna pattern frame of  FIG. 2 .  FIG. 4  is a cross-sectional view taken along the line A-A of  FIGS. 2 and 3 . 
     Referring to  FIGS. 1 through 4 , a radiator  220  having an antenna pattern formed thereon according to this embodiment is embedded in a case  120  of a mobile communications terminal  100 . In order that the radiator  220  having the antenna pattern thereon is embedded in the case  120 , an antenna pattern frame  200  needs to be provided so that the radiator  220  having the antenna pattern thereon is formed on a radiator frame  210 . 
     The antenna pattern frame  200 , provided to form the antenna pattern inside the electronic device case according to this embodiment, may include the radiator  220  having an antenna pattern portion  222  and connection terminal portions  224 , and the radiator frame  210 . 
     The radiator  220  may be formed of a conductive material, such as aluminum or copper. Further, the radiator  220  may receive external signals and transmit the received external signals to a signal processor of the electronic device such as the mobile communications terminal  100 . Further, the radiator  22 C includes the antenna pattern portion  222  which is a meander line antenna pattern. 
     The connection terminal portions  224  transmit the received external signals to the electronic device. The connection terminal portions  224  may be formed by bending, forming or drawing a portion of the radiator  220 . Alternatively, the connection terminal portions  224  may be manufactured separately from the radiator  220  and be then connected to the radiator  220  (see  FIG. 7 ). 
     The radiator frame  210  may have a three-dimensional structure consisting of a straight portion  260  having a flat profile and a curved portion  240  with a curvature. The radiator  220  may have flexibility such that the radiator  220  can be disposed along the curved portion  240  of the radiator frame  210 . 
     The radiator frame  210  is produced by injection molding. While the antenna pattern portion  222  may be formed on one side  210   a  of the radiator frame  210 , the connection terminal portions  224  may be formed on the other side  210   b  opposite to the one side  210   a.    
     The radiator  220 , which is embedded in the electronic device case  120 , has the antenna pattern portion  222  receiving external signals and the connection terminal portions  224  transmitting the received external signals to the electronic device that may be arranged in the different planes. 
     The one side  210   a  of the radiator frame  210 , on which the antenna pattern portion  222  is formed, is bonded to the inside of the electronic device case  120 , so that the antenna pattern can be embedded in the electronic device case  120 . 
     Alternatively, the antenna pattern may be embedded in the electronic device case  120  by placing the antenna pattern frame  200  in a mold and performing insert molding. 
     Therefore, the antenna pattern frame  200  serves as a first injection molded part so that the radiator  220  having the antenna pattern portion  222  thereon is placed within the electronic device case  120 . 
     The radiator  220  and the radiator frame  210  may have the same boundary, which increases the fluidity of materials, such as resin, during a second injection molding process in which the antenna pattern frame  200  is placed within the mold after the first injection molding process. 
     Guide pin holes  225  may be formed in the radiator  220 . Guide pins  328  (see  FIG. 9 ) of a mold  300  are inserted into the guide pin holes  225  during molding to thereby prevent the movement of the radiator  220  on the radiator frame  210 . 
     Contact pin holes  223  may be formed in the radiator  220  so that contact pins  326  (see  FIG. 9 ) of the mold  300  are inserted into the contact pin holes  223  during injection molding, thereby preventing the movement of the radiator  220  on the radiator frame  210 . 
     The contact pins  326  and the guide pins  328  may be formed on the radiator  220 . After injection molding is completed, portions of the radiator frame  210  located under the contact pins  326  are filled, while holes are formed in portions of the radiator frame  210  located under the guide pins  328 . 
     The contact pins  326  to be inserted into the contact pin holes  223 , formed in the radiator  220 , prevent the horizontal movement of the radiator  220  in the mold  300  during the first injection molding process. Furthermore, the guide pins  328  to be inserted into the guide pin holes  225 , formed in the radiator  220 , prevent the vertical movement of the radiator  220  in the mold  300  during the first injection molding process. 
     Various embodiments of the antenna pattern frame  200  configured as described above will now be described in detail. 
     [Antenna Pattern Frame According to First Embodiment] 
       FIGS. 2 through 4  are views illustrating an antenna pattern frame according to a first embodiment of the invention. 
     The radiator  220  of the antenna pattern frame  200  according to the first embodiment may be bent to form the connection terminal portions  224 , the antenna pattern portion  222 , and connection portions  226  connected therebetween. 
     The connection portions  226  may connect the antenna pattern portion  222  and the connection terminal portions  224  to be arranged in the different planes. The connection terminal portions  224  that are not embedded in the electronic device case may be exposed on the other side  210   b  of the antenna pattern frame  200 . 
     That is, the radiator  220  is bent on the basis of the connection portions  226  to form the antenna pattern portion  222  and the connection terminal portions  224 , so that the radiator  220  can be realized to have a three-dimensional curved surface. 
     In order to support the radiator  220  having the three-dimensional curved surface, radiator support portions  250  may protrude from the other side  210   b  of the radiator frame  210 . 
     The radiator support portions  250  can firmly support the connection portions  226  and the connection terminal portions  224  that are exposed on the other side  210   b.    
     [Antenna Pattern Frame According to Second Embodiment] 
       FIG. 5  is a schematic sectional view illustrating an antenna pattern frame according to a second embodiment of the invention. 
     Referring to  FIG. 5 , similarly to the first embodiment, described with reference to  FIGS. 2 through 4 , the radiator  220  of the antenna pattern frame  200  according to the second embodiment may be bent to form the connection terminal portions  224  and the antenna pattern portion  222 , and the connection portions  226  connected therebetween. 
     However, the connection portions  226  according to the second embodiment may be formed through the radiator support portions  250  that protrude from the other side of the radiator frame  210 . 
     [Antenna Pattern Frame According to Third Embodiment] 
       FIG. 6  is a view illustrating an antenna pattern frame according to a third embodiment of the invention. 
     Referring to  FIG. 6 , similarly to the above-described first and second embodiments, the radiator  220  of the antenna pattern frame  200  may be bent to form the connection terminal portions  224  and the antenna pattern portion  222 , and the connection portions  226  connected therebetween. 
     The radiator frame  210  according to the third embodiment does not have the radiator support portions  250  that protrude from the other side  210   a  of the antenna pattern frame  200 . The bottom of the radiator support portions  250  is at the same level as that of the radiator frame  210 . Further, the connection portions  226  according to the third embodiment may be formed through the radiator frame  210  or the radiator support portions  250 . 
     [Antenna Pattern Frame According to Fourth Embodiment] 
       FIG. 7  is a view illustrating an antenna pattern frame according to a fourth embodiment of the invention. 
     Referring to  FIG. 7 , the antenna pattern frame  200  according to the fourth embodiment may include a connection terminal  270  that is separated from the antenna pattern portion  222 . 
     The connection terminal  270  may be an elastic body that connects the antenna pattern portion  222  and a circuit board  140  to each other. 
     In particular, the connection terminal  270  may be a C-clip or a pogo-pin that allows for an electrical connection between the antenna pattern portion  222  and the circuit board  140 . A hole may be formed in the radiator frame  210  so that the connection terminal  270  can be inserted into the hole. 
     Hereinafter, a method and mold for manufacturing the antenna pattern frame  200  according to the above-described various embodiments will now be described in detail. 
       FIG. 8  is a schematic perspective view illustrating a radiator that is used to manufacture an antenna pattern frame according to an exemplary embodiment of the invention.  FIG. 9  is a schematic sectional view illustrating a first embodiment of a mold for manufacturing an antenna pattern frame in order to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the invention.  FIG. 10  is a schematic view illustrating how a resin material is injected into the mold of in  FIG. 9 . 
     Hereinafter, a method of manufacturing the antenna pattern frame  200  according to an exemplary embodiment of the invention will be described with reference to  FIGS. 8 through 10 . 
     First, as shown in  FIG. 8 , the radiator  220  has the antenna pattern portion  222  and the connection terminal portions  224  that are arranged in the different planes. The antenna pattern portion  222  receives external signals. The connection terminal portions  224  are in contact with the circuit board of the electronic device to thereby transmit the received external signals to the electronic device. 
     Both the guide pin holes  225  and the contact pin holes  223  may be formed in the radiator  220 . 
     The radiator  220  may have a three-dimensional structure. Specifically, the radiator  220  is bent to form the antenna pattern portion  222  and the connection terminal portions  224 , and the connection terminal portions  226  connected therebetween. 
     After the radiator  220  is provided, the radiator  220  is placed in an inner space  350  of the mold  300 . 
     The inner space  350  is created when an upper mold  320  and a lower mold  340  are joined. A recess, formed in the upper mold  32 C or the lower mold  340 , becomes the inner space  350  when the upper mold  320  and the lower mold  340  are joined. 
     When the upper mold  320  and the lower mold  340  are joined, the guide pins  328 , the contact pins  326 , or the guide pins  328  and the contact pins  326 , formed in the upper mold  320  or the lower mold  340 , are inserted into or make contact with the guide pinholes  225 , the contact pin holes  223 , or the guide pin holes  225  and the contact pin holes  223 , formed in the antenna pattern portion  222 , so that the radiator  220  can be fixed in the inner space  350 . 
     A resin material is injected into the inner space  350  to form the radiator frame  210 , so that the antenna pattern portion  222  is embedded in the electronic device case  120 . 
     Here, the inner space  350  of the upper or lower mold  320  or  340  is curved so that the radiator frame  210  has a curved portion  240 . 
     The resin material is injected so that the bottom of the radiator  220  is at the same level as that of the radiator frame  210 . Therefore, when the radiator frame  210  is put in the mold for injection molding in order to manufacture the electronic device case  120  in which the antenna pattern is embedded, the flowability of the resin can be improved. 
     [Mold for Manufacturing Antenna Pattern Frame According to First Embodiment] 
     Referring to  FIGS. 9 and 10 , the mold  300  for manufacturing the antenna pattern frame  200  will be described in detail. 
     The mold  300  for manufacturing the electronic device case  120  having the antenna pattern portion  222  embedded therein according to an exemplary embodiment of the invention may include the upper and lower molds  320  and  340  and the resin material injection portion  370 . 
     The radiator  220  may be received between the upper and lower molds  320  and  340  while the antenna pattern portion  222  receiving an external signal and the connection terminal portions  224  in contact with the circuit board  140  of the electronic device are arranged in the different planes. 
     The resin material injection portion  370  is a passage through which a resin material flows. The resin material injection portion may be formed in the upper mold  320 , the lower mold  340  or the upper and lower molds  320  and  340 . When the upper and lower molds  320  and  340  are joined, the resin material is injected into the inner space  350  between the upper and lower molds  32 C and  340  so that the resin material filling the inner space  350  forms the radiator frame  210  that allows the antenna pattern portion  222  to be placed within the electronic device case  120 . 
     The guide pins  328 , the contact pins  326  or the guide pins  328  and the contact pins  326 , formed on the radiator  220 , may be inserted into or make contact with the guide pin holes  225 , the contact pin holes  223  or the guide pin holes  225  and the contact pin holes  223 , formed in any one of the upper mold  320 , the lower mold  340  or the upper and lower molds  320  and  340 . 
     The inner space  350  between the upper and lower molds  320  and  340  may have a space allowing the radiator frame  210  to have the curved portion  240 . 
     Furthermore, the inner space  350  of the upper and lower molds  320  and  340  may receive the connection terminal portions  224  and have radiator support portion forming recesses  346  to thereby form the radiator support portions  250  that support the connection terminal portions  224 . 
     Further, compression pins  324  may be provided on the upper mold  320 , the lower mold  340  or the upper and lower molds  320  and  340 . The compression pins  324  compress the connection terminal portions  224  arranged in the radiator support portion forming recesses  346  so that the connection terminal portions  224  make contact with the radiator support portion forming recesses  346 . 
     The compression pins  324  may prevent the resin material from flowing under the connection terminal portions  224 . If the connection terminal portions  224  are partially covered with the injection molding material, this may cause an unstable electrical connection. The compression pins  324  can prevent this unstable electrical connection. 
     [Mold for Manufacturing Antenna Pattern Frame According to Second Embodiment] 
       FIG. 11  is a schematic sectional view illustrating a second embodiment of a mold for manufacturing an antenna pattern frame to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the invention.  FIG. 12  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 11 . 
     With reference to  FIGS. 11 and 12 , the antenna pattern frame mold  300  according to the second embodiment is substantially the same as the mold for manufacturing an antenna pattern frame according to the first embodiment except as described herein below. 
     According to the second embodiment, at least one of the guide pins or contact pins that prevent the movement of the radiator may be inserted into the mold  300  due to the flow of the resin material into the mold. 
     These guide pins or contact pins may be defined as flow pins  345 . The flow pins  345 , arranged in the inner space  350  of the mold  300 , support the radiator  220  before a resin material is injected and may move from the inner space  350  toward the mold  300  as the injection molding material is injected. 
     The use of the flow pins  345  can minimize pin marks unlike other pins fixed to the mold  300 . 
     [Mold for Manufacturing Antenna Pattern Frame According to Third Embodiment] 
       FIG. 13  is a schematic sectional view illustrating a third embodiment of a mold for manufacturing an antenna pattern frame to illustrate a method of manufacturing an antenna pattern frame according to an exemplary embodiment of the invention.  FIG. 14  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 13 . 
     Referring to  FIGS. 13 and 14 , like the second embodiment, the antenna pattern frame mold  300  according to the third embodiment is substantially the same as the antenna pattern frame mold according to the first embodiment except as described herein below. 
     According to the third embodiment, magnets  380  may be formed in the radiator support portion forming recesses  346  in which the connection terminal portions  224  are mounted. 
     Similarly to the compression pins  324 , the magnets  380  can prevent the resin material from flowing under the connection terminal portions  224  and prevent an unstable electrical connection caused when the connection terminal portions  244  are partially covered with the injection molding material. 
     [Antenna Pattern Frame for Preventing Loosening of Radiator and Method of Manufacturing the Same] 
     Hereinafter, an antenna pattern frame including a radiator frame having an antenna pattern firmly fixed thereto, and a method of manufacturing an antenna pattern portion frame preventing loosening by firmly fixing the antenna pattern portion to the radiator frame will be described. 
       FIGS. 15A through 15D  are schematic perspective views illustrating the shape of an antenna radiator that is used to perform a method of fixing a radiator having an antenna pattern portion formed thereon according to an exemplary embodiment to an antenna pattern frame. 
     With reference to  FIGS. 15A through 15D , various embodiments of a radiator are described in which the radiator  220  having contact surface extensions  227  is fixed to the antenna pattern frame  200 . 
     As for the antenna pattern frame  200  to which the radiator  220 , shown in  FIGS. 15A through 15D  is applied, the radiator  220  having the contact surface extensions  227  formed thereon may be replaced with the radiator  220  of the antenna pattern frame  200 , shown in  FIGS. 2 through 7 . 
     That is, the antenna pattern frame  200 , shown in  FIGS. 15A through 15D , may include the radiator  220 , the radiator frame  210  and the contact surface extensions  227 . 
     As for the radiator  220  and the radiator frame  210  of  FIGS. 15A through 15D , the description of the radiator  220  and the radiator frame  210  with reference to  FIGS. 2 through 4  may be repeated. 
     However, the radiator  220  having the contact surface extensions  227  prevents the loosening of the radiator  220  from the radiator frame  210  when injection molding is performed to manufacture the radiator frame  210 . 
     When a resin material is fed into the mold in which the radiator  220  is placed for injection molding, the contact surface extensions  227  can increase the contact area with the resin material, so that the radiator  220  can be firmly fixed to the radiator frame  210 . 
     As shown in  FIG. 15A , the contact surface extensions  227  may be blades  227   a  that extend from the edges of the radiator  220 , are bent, and are inserted into the radiator frame  210 . 
     Furthermore, as shown in  FIG. 15B , the contact surface extensions  227  may be holes  227   b  that are formed in the radiator  220 . An injection molding material flows through the holes  227   b  to thereby increase the contact surface and fix the radiator  220  in an accurate position. 
     As shown in  FIG. 15C , the contact surface extensions  227  may be embossed into the radiator  220  to thereby increase the contact area between the radiator  220  and the injection molding material and determine the accurate position. 
     As shown in  FIG. 15D , the contact surface extension  227  may be formed by bending the edges of the end of the antenna pattern portion  222  of the radiator  220  downward, and the bent contact extension  227  may be inserted into the radiator frame  210 . 
     The antenna pattern frame  200  according to an exemplary embodiment of the invention that prevents the loosening of the radiator  220  can be applied to the antenna pattern frame as described with reference to  FIGS. 2 through 7 . 
     As for the method of manufacturing an antenna pattern frame that can prevent loosening by firmly fixing the antenna pattern portion to the radiator frame  210 , the description of the injection molding methods with reference to  FIGS. 8 through 14  may be repeated except that the radiator  220  having the contact surface extensions  227  formed to increase the contact area with the molding injection material is put into the mold  30  during injection molding. 
     [Electronic Device Case Having Antenna Pattern Radiator Embedded Therein, Method and Mold for Manufacturing the Same, and Mobile Communications Terminal] 
       FIG. 16  is an exploded perspective view illustrating a case of a mobile communications terminal that is an electronic device having an antenna pattern radiator embedded therein according to an exemplary embodiment of the invention. 
     Referring to  FIG. 16 , the electronic device case  120  having the antenna pattern radiator  220  embedded therein according to this embodiment includes the radiator  220 , the radiator frame  210  and a case frame  130 . 
     The descriptions of the embodiments, shown in  FIGS. 2 through 7 , will substitute for a description of the radiator  220  and the radiator frame  210 . 
     The case frame  130  covers one side of the radiator frame  210  having the antenna pattern portion  222  formed thereon, so that the antenna pattern portion  222  is embedded between the radiator frame  210  and the case frame  130 . 
     The radiator frame  210  and the case frame  130  are formed integrally with each other. As viewed from bottom of the electronic device case  120 , the antenna pattern portion  222  may not been seen but the connection terminal portions  224  may be seen. 
     The radiator frame  210 , the case frame  130 , or the radiator frame  210  and the case frame  130  may be manufactured using injection molding. Particularly, the radiator frame  210  and the case frame  130  are manufactured as different injection molded parts, the radiator frame  210  having the radiator  220  formed thereon is bonded to the case frame  130 . 
     The case frame  130  may be formed by using injection molding on the radiator frame  210 , thereby performing double injection molding. That is, the radiator frame  210  is put into the mold, and insert injection molding is performed, so that the radiator frame  210  and the case frame  130  can be formed integrally with each other. 
     When put into a mold  500  for manufacturing the electronic device case, guide pins or contact pins (not shown), formed on the mold  500 , may be inserted into the guide pinholes  225  or the contact pin holes  223 , formed in the radiator frame  210 , thereby preventing the movement of the antenna pattern frame  200  inside the mold  500 . 
     Hereinafter, a method of manufacturing an electronic device case will be described in detail with reference to  FIGS. 16 through 19 . 
     According to the method of manufacturing an electronic device case according to an exemplary embodiment of the invention, the radiator  220  is provided in which the antenna pattern portion  222  receiving an external signal and the connection terminal portions  224  making contact with the connection terminals  144  of the circuit board  140  of the electronic device are arranged in the different planes. 
     The radiator  220  is placed in the inner space  350  of the upper mold  300  or the lower mold  350  to manufacture the radiator frame  210 , and a resin material is fed into the upper and lower molds, thereby manufacturing the radiator frame  210  having the radiator  220  formed on one side of the radiator frame  210 . 
     Furthermore, in order that the radiator  220  is embedded between the radiator frame  210  and the case frame  130 , the radiator frame  210  and the case frame  130  are formed integrally with each other to manufacture the electronic device case  120  in which the antenna is embedded. 
       FIG. 17  is a schematic view illustrating a first embodiment of a method of manufacturing an electronic device case having an antenna pattern radiator embedded therein according an exemplary embodiment of the invention. 
     Referring to  FIG. 17 , the case frame  130  is a separate injection molded part that includes a radiator receiving recess  122  having a shape corresponding to that of the radiator frame  210 . By bonding the radiator frame  210  to the radiator receiving recess  122 , the electronic device case  120  having the antenna pattern radiator embedded therein can be manufactured. 
     An adhesive layer  410  is formed on the surface of the radiator  220  of the antenna pattern frame  200 . 
       FIG. 18  is a schematic view illustrating a mold for manufacturing an electronic device case that is used to perform a second embodiment of a method of manufacturing an electronic device case having an antenna pattern radiator embedded therein according to an exemplary embodiment of the invention.  FIG. 19  is a schematic view illustrating how a resin material is injected into the mold of  FIG. 18 . 
     Referring to  FIGS. 18 and 19 , the electronic device case  120  having the antenna pattern radiator  220  embedded therein is manufactured in such a way that the radiator frame  210  is arranged in the mold  500  for manufacturing an electronic device case that has the inner space  550  having a shape corresponding to the case frame, and the resin material is fed into the mold  550 , thereby forming radiator frame  210  integrally with the electronic device case  120 . 
     That is, the radiator frame  210  and the case frame  130  may be formed integrally with each other. 
     Here, injection molding for manufacturing the antenna pattern frame  200  is referred to as a first injection molding process, and injection molding for manufacturing the electronic device case  120  is referred to as a second injection molding process. Like the first injection molding process, the movement of the antenna pattern frame  200  inside the mold  500  can be prevented during the second injection molding process. 
     Furthermore, the inner space  550  of the mold  500  may include a curve generation portion  524  that allows the electronic device case  120  to be curved. 
     The mold of the electronic device case for manufacturing the electronic device case  120  having the antenna pattern embedded therein during the second injection molding process may include the upper or lower mold  520  or  540  and a resin material injection portion  570 . The upper or lower mold  520  and  540  receives the radiator frame  210  including the radiator  220  having the antenna pattern portion  222  receiving an external signal and the connection terminal portions  224  making contact with the circuit board of the electronic device while the antenna pattern portion  222  and the connection terminal portions  224  are formed in the different planes. The resin material injection portion  570  is formed in the upper mold  520 , the lower mold  540 , or the upper and lower molds  520  and  540 . A resin material flows through the resin material injection portion  570  into the inner space  550  created when the upper and lower molds  520  and  540  are joined, so that the resin material filling the inner space  550  forms the electronic device case  120 . 
     Like the radiator  220 , guide pin holes or contact pin holes are formed in the radiator frame  210 . The guide pins or the contact pins, formed in the mold  500 , may be inserted into these guide pin holes or contact pin holes, so that the movement of the radiator frame  210  inside the mold  500  can be prevented. 
     The electronic device case having the antenna pattern embedded therein can be applied to the mobile communications terminal  100 . 
     That is, the mobile communications terminal  100 , that is, an electronic device having an antenna pattern embedded therein according to an exemplary embodiment of the invention may include the radiator frame  210 , the case frame  130  and the circuit board  140 . 
     As for the radiator frame  210  and the case frame  130 , all of the above-described embodiments and the manufacturing methods thereof can be applied. 
     Thus, the above description will substitute for a detailed description of the mobile communications terminal  100 . 
     [Electronic Device to which Antenna Pattern Frame Having a Ground Portion is Applied] 
       FIG. 20  is a schematic perspective view illustrating an antenna pattern frame having a ground portion according to another exemplary embodiment of the invention.  FIG. 21  is a schematic view illustrating an antenna pattern radiator having a ground portion according to another exemplary embodiment of the invention. 
     An antenna pattern frame  600  having a ground portion according to another exemplary embodiment of the invention may be widely used for a laptop computer requiring noise reduction among electronic devices having antenna patterns embedded in a case. 
     The antenna pattern frame  600  having a ground portion according to another exemplary embodiment of the invention may include a radiator  620 , a ground portion  626  and a radiator frame  610 . 
     The antenna pattern frame  600  according to this embodiment is different from the antenna pattern frame  200 , shown in  FIGS. 2 through 7 , in that the ground portion  626  extends from the radiator  620 . The radiator frame  610  may be modified in order to form the ground portion  626 . 
     The ground portion  626  may be supported by a ground portion support  612  that is stepped with respect to the radiator frame  610 . 
     The antenna pattern portion  622  may be formed on one side  610   a  of the radiator frame  610  or connection terminal portions  624  may be formed on the other side  610   b  opposite to the one side  610   a.    
     The radiator frame  610  may be configured so that the antenna pattern portion  622  is embedded in the electronic device case. 
     Like the antenna pattern frame  200 , shown in  FIGS. 2 through 7 , the radiator  620  of the antenna pattern frame  600  may include the connection terminal portions  624  that are formed on the other side  610   b  of the radiator frame  610  so as to transmit the external signal to the circuit board. 
     Furthermore, the radiator  620  is bent to form connection portions  628 , which are then bent to form the ground portion  626 . The ground portions  626  may be formed through the radiator frame  610 . As the connection portions  628  are formed through the radiator frame  610 , the radiator  620  can be firmly fixed to the radiator frame  610 . 
     Further, contact pin holes  623  that prevent the movement of the radiator  620  inside a mold  700  may be formed in the radiator  620 . 
     Contact pins  728  of the mold  700  may be inserted into the contact pin holes  623  during injection molding to thereby prevent the movement of the radiator  620  inside the mold  700 . 
     Guide pin holes  625  may be formed in the radiator  620 . Guide pins  726  of the mold  700  may be inserted into the guide pinholes  625  during injection molding to thereby prevent the movement of the radiator  620  inside the mold  700 . 
       FIG. 22  is a schematic sectional view illustrating a mold for manufacturing an antenna pattern frame that is used to perform a method of manufacturing an antenna pattern frame having a ground portion according to another exemplary embodiment. 
     According to the method of manufacturing an antenna pattern frame having a ground portion according to another exemplary embodiment of the invention, first, the radiator  620  may be provided in which the antenna pattern portion  622  receiving the external signal and the ground portion  626  may be arranged in the different planes. 
     The radiator  620  may be placed in the mold  700  that has an inner space  750  receiving the radiator  620 . 
     After the radiator  620  is arranged in the mold  700 , a resin material is injected into the inner space  750  through the resin material injection portion  770 , formed in the mold  700 , so that the resin material filling the inner space  750  forms the radiator frame  610  that allows the radiator  620  to be embedded in the electronic device case. 
     When the radiator  620  is arranged in the mold  700 , the guide pins  726 , the contact pins  728  or the guide pins  726  and the contact pins  728  formed on the mold  700  may be inserted into or make contact with the guide pin holes  625 , the contact pin holes  623 , or the guide pin holes  625  and the contact pin holes  623  formed in the radiator  620 . 
     Recesses may be formed in the inner space  750  so as to receive the connection terminal portions  624  therein. Injection molding may be performed by arranging the connection terminal portions  624  in the recesses. 
     The mold  700  for manufacturing the antenna pattern frame having the ground portion according to another exemplary embodiment of the invention may include an upper mold  720  or a lower mold  740  and the resin material injection portion  770 . The upper or lower molds  720  or  740  receives the radiator  620  having the antenna pattern portion  622  receiving an external signal and the ground portion  626  while the antenna pattern portion  622  and the ground portion  626  are arranged in the different planes. The resin material injection portion  770  is formed in the upper mold  720 , the lower mold  740 , or the upper and lower molds  720  and  740 , A resin material is injected into the inner space  750  through the resin material injection portion  770  so that the resin material filling the inner space  750  forms the antenna pattern frame  600  that allows the radiator  620  to be embedded in the electronic device case. 
     Furthermore, the guide pins  726 , the contact pins  728  or the guide pins  726  and the contact pins  728  may be formed in the upper or lower mold  720  or  740  and be inserted into the guide pine holes  625 , the contact pin holes  623 , or the guide pin holes  625  and the contact pin holes  623  formed in the radiator frame  610 . 
     The connection terminal portions  624  may be received in the upper mold  720 , the lower mold  740 , or the upper and lower molds  720  and  740 . 
       FIG. 23  is a schematic exploded perspective view illustrating a laptop computer that is an electronic device to which an antenna pattern frame having a ground portion according to another exemplary embodiment to the invention is applied. 
     As for the radiator frame  610  having the antenna pattern portion  622 , the connection terminal portions  624 , and the ground portion  626 , the antenna pattern portion  622  may be embedded in a case of a laptop computer, which is an electronic device  800 . 
     That is, the electronic device  800  according to this embodiment may include the radiator frame  610 , a case  820  and a circuit board  600 . 
     As for the radiator frame  610 , all of the above-described embodiments and manufacturing methods thereof may be applied. 
     Therefore, the above description will substitute for a detailed description of the electronic device  800 . 
     As set forth above, according to an antenna pattern frame and a method and mold for manufacturing the same according to an exemplary embodiment of the invention, a radiator having an antenna pattern portion can be embedded in an electronic device case, thereby reducing the vulnerability of an external antenna according to the related art to external shocks and preventing an increase in the volume of an internal antenna. 
     Furthermore, since an antenna of flexible materials can be embedded in the electronic device case, the durability and performance of the antenna can be improved in comparison with the use of the adhesive. 
     Furthermore, since the antenna can be embedded in the electronic device case without using a protective film, the case can be formed into a three-dimensional shape, such as a curved surface, thereby diversifying the appearance thereof. 
     Moreover, since an antenna film is not used, a manufacturing process can be performed with ease, and manufacturing costs can be reduced. 
     In addition, since the radiator and the connection terminal portions can be firmly supported against the antenna pattern frame, the loosening of the antenna pattern portion from a frame can be prevented, and the antenna pattern portion can be firmly connected to the circuit board of the electronic device. 
     Furthermore, since this antenna pattern frame can be applied to any kind of electronic devices requiring antennas, various applications of the antenna pattern frame can be made. 
     While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit and scope of the invention as defined by the appended claims.