Patent Publication Number: US-8969143-B2

Title: Semiconductor package and method of manufacturing the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Divisional of U.S. application Ser. No. 13/234,971, filed on Sep. 16, 2011, now U.S. Pat. No. 8,513,680, which claims the benefit of Korean Patent Application No. 10-2010-0131667, filed on Dec. 21, 2010, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in-their entirety by reference. 
    
    
     BACKGROUND 
     1. Field 
     The present disclosure relates to light-emitting device packages in which a light-emitting device chip is packaged using a lead frame and a mold, and methods of manufacturing the light-emitting device packages. 
     2. Description of the Related Art 
     Light-emitting device chips such as light-emitting diodes (LED) refer to semiconductor devices capable of reproducing various colors of light by including a light-emitting source via PN junctions of a compound semiconductor. A LED has a long lifetime, is compact and lightweight, and has an intense light directivity and can be driven at a relatively low voltage. Also, a LED is resistant to impact and vibration, does not require a preheating time or complicated driving operations, and can be packaged in various forms. Thus, the LED may be used for various purposes. 
     A light-emitting device chip like a LED is mounted in a metal lead frame and a mold frame through a packaging operation to be manufactured as a semiconductor. 
     SUMMARY 
     Provided are light-emitting device packages in which a mold frame and a lead frame are firmly coupled to each other, and methods of manufacturing the light-emitting device packages. 
     Provided are light-emitting device packages in which a uniform light flux may be maintained, and methods of manufacturing the light-emitting device packages. 
     Provided are light-emitting device packages in which a mold frame and a lead frame are firmly coupled to each other and a light-emitting efficiency is high, and methods of manufacturing the light-emitting device packages. 
     Provided are light-emitting device packages in which a mold frame and a lead frame are firmly coupled to each other and the total thicknesses of the light-emitting device packages may be reduced, and methods of manufacturing the light-emitting device packages. 
     Provided are light-emitting device packages in which deformation of wires connected to a light-emitting chip and risk of breaks of the wires may be reduced, and methods of manufacturing the light-emitting device packages. 
     Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. 
     According to an aspect of the present invention, a light-emitting device package includes: a lead frame formed of a meal and on which a light-emitting device chip is mounted; and a mold frame coupled to the lead frame by injection molding, wherein the lead frame includes: a mounting portion on which the light-emitting device chip is mounted; and first and second connection portions that are disposed on two sides of the mounting portion in a first direction and connected to the light-emitting device chip by wire bonding, wherein the first connection portion is stepped with respect to the mounting portion, and a stepped amount is less than a material thickness of the lead frame. 
     The second connection portion is stepped with respect to the mounting portion, and a stepped amount is less than the material thickness of the lead frame. 
     The light-emitting device package may further include a first reflection portion that reflects light emitted from the light-emitting device chip and is disposed on two sides of the mounting portion in a second direction that is perpendicular to the first direction. An inclination angle of the first reflection portion to the mounting portion may be from about 30 to about 60 degrees. A height of the first reflection portion may be from about 0.5 to about 1.5 times the material thickness of the lead frame. A length of the first reflection portion in the first direction may be longer than a length of the light-emitting device chip. 
     The mounting portion may be rectangular, and the second direction is a short axis direction. The mold frame may include a second reflection portion that reflects light emitted from the light-emitting device chip and is disposed on two sides of the mounting portion in the first direction. The mold frame may be formed of a liquid crystal polymer (LCP). 
     According to another aspect of the present invention, a light-emitting device package includes: a light-emitting device chip; a mounting portion that is rectangular and on which the light-emitting device chip is mounted; a first reflection portion that is made of a metal and disposed on two sides of the mounting portion in a short axis direction and reflects light emitted from the light-emitting device chip; and a second reflection portion that is made of a metal and is disposed on two sides of the mounting portion in a long axis direction and reflects light emitted from the light-emitting device chip. 
     An inclination angle of the first reflection portion to the mounting portion may be from about 30 to about 60 degrees. 
     A height of the first reflection portion may be from about 0.5 to about 1.5 times a thickness of the mounting portion. 
     The length of the first reflection portion along the long axis may be longer than a length of the light-emitting device chip. 
     The mold may be formed of a liquid crystal polymer (LCP). 
     The light-emitting device package may further include first and second connection portions that are disposed on two sides of the mounting portion in a short axis direction and connected to the light-emitting device chip by wire bonding, wherein at least one of the first and second connection portions is spaced apart from the mounting portion in the long axis direction, and is stepped with respect to the mounting portion, and a stepped amount is equal to or less than a material thickness of the lead frame. 
     According to another aspect of the present invention, a method of manufacturing a light-emitting device package, includes: forming a lead frame by processing a metal plate, the lead frame including a mounting portion, first and second connection portions that are disposed on two sides of the mounting portion in a first direction and respectively connected to the metal plate via first and second support arms, and a first reflection surface that is extended from two boundaries of the mounting portion in a second direction that is perpendicular to the first direction and is connected to the metal plate via a third support arm; forming a mold frame by performing an injection molding process to a polymer on the lead frame to couple the lead frame and the mold frame to each other, wherein the mold frame includes a second reflection surface disposed on two sides of the mounting portion in the first direction; mounting a light-emitting device chip on the mounting portion; and electrically connecting the light-emitting device chip and the first and second connection portion by wire bonding after cutting the first and second support arms. 
     The method may further include: filling an upper portion of the light-emitting chip with a transmissive filler to form a light-emitting device package; and separating the light-emitting device package from the metal plate by cutting the third support arm. 
     The polymer may include a liquid crystal polymer (LCP). The light-emitting device package may be rectangular, and the second direction may be a short axis direction. 
     At least one of the first and second connection portions may be spaced apart from the mounting portion. At least one of the first and second connection portions may be stepped upward with respect to the mounting portion. A stepped amount may be equal to or less than a material thickness of the lead frame. An inclination angle of the first reflection portion to the mounting portion may be from about 30 to about 60 degrees. A height of the first reflection portion may be from about 0.5 to about 1.5 times a material thickness of the lead frame. A length of the first reflection portion in the first direction may be longer than a length of the light-emitting device chip. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and/or other aspects will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which: 
         FIG. 1  is a perspective view illustrating a light-emitting device package according to an embodiment of the present invention; 
         FIG. 2  is a cross-sectional view of the light-emitting device package of  FIG. 1 , cut along a line A-A, according to an embodiment of the present invention; 
         FIG. 3  is a cross-sectional view of the light-emitting device package of  FIG. 1 , cut along a line B-B, according to an embodiment of the present invention; 
         FIG. 4  is a cross-sectional view illustrating a light-emitting device package according to another embodiment of the present invention; 
         FIG. 5  is a cross-sectional view illustrating a light-emitting device package according to another embodiment of the present invention; 
         FIG. 6  is a plan view illustrating a method of forming a lead frame from a metal plate, according to an embodiment of the present invention; 
         FIG. 7  is a plan view illustrating a lead frame to which a mold frame is coupled, according to an embodiment of the present invention; 
         FIG. 8  is a plan view illustrating first and second support arms, which connect first and second connection portions and a metal plate, that are cut, according to an embodiment of the present invention; 
         FIG. 9  is a plan view illustrating a light-emitting device package in which a light-emitting device chip is mounted in a mounting portion and a wire bonding operation is performed, according to an embodiment of the present invention; 
         FIG. 10  is a plan view illustrating a cavity of a light-emitting device package in which a filler is filled, according to an embodiment of the present invention; and 
         FIG. 11  is a plan view illustrating a light-emitting device package separated from the metal plate by cutting a third support arm, according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments are merely described below, by referring to the figures, to explain aspects of the present description. 
       FIG. 1  is a perspective view illustrating a light-emitting device package  1  according to an embodiment of the present invention.  FIG. 2  is a cross-sectional view of the light-emitting device package  1  of  FIG. 1 , cut along a line A-A, according to an embodiment of the present invention.  FIG. 3  is a cross-sectional view of the light-emitting device package  1  of  FIG. 1 , cut along a line B-B, according to an embodiment of the present invention. 
     Referring to  FIGS. 1 through 3 , the light-emitting device package  1  includes a mold frame  100  and a lead frame  200  formed of a metal. A light-emitting device chip  300  is mounted in the lead frame  200 . 
     The light-emitting device chip  300  may be a light-emitting diode chip. The light-emitting diode chip may emit blue, green, or red color light according to the material of a compound semiconductor of which the light-emitting diode chip is formed. Also, a surface of the light-emitting diode chip may be coated with a fluorescent material so as to emit white light. For example, a blue light-emitting diode chip may include an active layer having a plurality of quantum well layers that are formed by alternately stacking GaN and InGaN, and a P-type clad layer and an N-type clad layer formed of a compound semiconductor of Al x Ga y N z  may be formed respectively on and under the active layer. In the current embodiment, a light-emitting diode chip is used as the light-emitting device chip  300  but the embodiment of the present invention is not limited thereto. For example, the light-emitting device chip  300  may be a UV photodiode chip, a laser diode chip, an organic light-emitting diode chip, or the like. 
     The lead frame  200  includes a mounting portion  210  on which the light-emitting device chip  300  is mounted, first and second connection portions  220  and  230  that are electrically connected to the light-emitting device chip  300  by wire bonding, and a first reflection portion  240  reflecting light that is emitted by the light-emitting device chip  300  to emit the light out of the light-emitting device package  1 . The first and second connection portions  220  and  230  are located on two sides of the mounting portion  210  in a first direction D 1 . For example, the first and second connection portions  220  and  230  may be connected to a cathode electrode and an anode electrode of the light-emitting device chip  300  via wires  301  and  302 , respectively. The first and second connection portions  220  and  230  are exposed out of the mold frame  100  and function as terminals that supply a current to the light-emitting device chip  300 . The first reflection portion  240  is located along a second direction D 2  that is perpendicular to the first direction D 1 . The lead frame  200  may be manufactured by pressing or etching a metal plate such as aluminum, copper, or the like. 
     The mold frame  100  may be coupled to the lead frame  200  using, for example, an insert injection molding method. The mold frame  100  may be formed of, for example, an electrical insulating polymer. The mold frame  100  is formed to have a cavity form in which the mounting portion  210 , the first and second connection portions  220  and  230 , and the first reflection portion  240  are exposed. The mold frame  100  includes a second reflection portion  101  that reflects light emitted from the light-emitting device chip  300  so as to be emitted from the light-emitting device package  1 . The second reflection portion  101  is disposed on two sides of the mounting portion  210  along the first direction D 1 . In addition, an inner side  102  of the mold frame  100  in the second direction D 2 , except the first reflection portion  240 , functions as a reflection portion for reflecting light. Accordingly, in the light-emitting device package  1 , the light-emitting device chip  300  is disposed on a lower surface of a cavity  2  that is entirely concave, and the first reflection portion  240  corresponding to an inner side of the cavity  2  and the inner side  102  function as a reflection portion that reflects light so as to emit the light out of the light-emitting device package  1 . A lower surface of the mounting portion  210  and the first and second connection portions  220  and  230  of the lead frame  200  may be exposed downward from the mold frame  100  and function as a heat radiation surface. 
     As described above, the light-emitting device package  1  is manufactured by coupling the mold frame  100  to the lead frame  200 , and electrically connecting the light-emitting device chip  300  and the first and second connection portions  220  and  230  by wire bonding, and then by encapsulating the cavity  2  by filling the same with a transmissive filler such as silicon. According to necessity, an upper portion or upper and lateral portions of the light-emitting device chip  300  may be coated with a fluorescent material before filling a filler. 
     In order to increase a coupling intensity between the lead frame  200  and the mold frame  100 , the first connection portion  220  and/or the second connection portion  230  are separably formed from the mounting portion  210  and a polymer may be filled in a gap between the first and second connection portions  220  and  230 . Referring to  FIG. 2 , the first connection portion  220  is disposed apart from the mounting portion  210  by a gap G 1 . Also, the first connection portion  220  is stepped upward from the mounting portion  210 . Accordingly, polymer, which is the material of the mold frame  100 , is filled up to an inner portion  310  corresponding to the gap G 1  and a stepped space  311  under the first connection portion  220 , thereby coupling the lead frame  200  and the mold frame  100  more firmly. 
     A length of the wire  301  needs to be longer than a distance between the cathode electrode of the light-emitting device chip  300  and the first connection portion  220 , and the wire  301  curves in an upward direction. When the first connection portion  220  is stepped upward from the mounting portion  210 , a tip of the curve portion of the wire  301  is further raised. A thickness H of the light-emitting device package  1  needs to be thick enough to completely accommodate the wire  301  within the light-emitting device package  1 . The greater a stepped amount S 1  of the first connection portion  220  with respect to the mounting portion  210 , the thicker the thickness H of the light-emitting device package  1  and the higher a height H 2  from the mounting portion  210  to an upper portion of the light-emitting device package  1 . The higher the height H 2 , the lower the light-emitting efficiency of light emitted from the light-emitting device chip  300 . 
     Table 1 shows results of analyzing a relationship between a light flux and the height H 2  from the mounting portion  210  to the upper portion of the light-emitting device package  1 . L 1  and L 2  refer to a long axis and a short axis of the rectangular light-emitting device package  1 , and H refers to the total height of the light-emitting device package  1 . FL refers to a ratio of emissive light flux to a reference light flux. Here, light flux of Sample No. 1 is set as the reference light flux. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 No 
                 L1 (mm) 
                 L2 (mm) 
                 H (mm) 
                 H2 (mm) 
                 FL (%) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 1 (ref) 
                 4 
                 2 
                 0.85 
                 0.55 
                 100 
               
               
                 2 
                 3 
                 2 
                 0.85 
                 0.55 
                 97.1 
               
               
                 3 
                 4 
                 1.8 
                 0.85 
                 0.55 
                 97.9 
               
               
                 4 
                 3 
                 1.8 
                 0.85 
                 0.55 
                 95.1 
               
               
                 5 
                 4 
                 2 
                 1 
                 0.7 
                 98.9 
               
               
                 6 
                 3 
                 1.8 
                 1 
                 0.7 
                 93.1 
               
               
                   
               
            
           
         
       
     
     Comparing Samples 1 and 5 and Samples 4 and 6 of Table 1, when the long axis L 1  and the short axis L 2  are the same, the lower the height H 2  from the mounting portion  210  to the upper portion of the light-emitting device package  1 , more light flux is emitted. 
     According to the current embodiment of the present invention, the stepped amount S 1  of the first connection portion  220  with respect to the mounting portion  210  is equal to or less than a material thickness S of the lead frame  200 . For example, when the stepped amount S 1  is half of the material thickness S, a height of the wire  301  may be smaller than when the stepped amount S 1  is the same as the material thickness S. As described above, by adjusting the stepped amount S 1  of the first connection portion  220  to be less than the material thickness S 1  of the lead frame  200  and firmly coupling the lead frame  200  and the mold frame  100 , the total height H of the light-emitting device package  1  may be reduced and the light-emitting efficiency may be improved. 
     Referring to  FIG. 4 , the second connection portion  230  may be spaced apart from the mounting portion  210  in the first direction D 1  by a gap G 2 . According to the above-described configuration, a polymer, which the mold frame  100  is formed of, is filled in an inner portion  320  of the gap G 2  as illustrated in  FIG. 4 , thereby coupling the lead frame  200  and the mold frame  100  more firmly. 
     Referring to  FIG. 5 , the second connection portion  230  is spaced apart from the mounting portion  210  in the first direction D 1  by the gap G 2 , and may be stepped upward with respect to the mounting portion  210 . According to the above-described configuration, the polymer of the mold frame  100  may be filled in the inner portion  320  of the gap G 2  and a stepped space  321  under the second connection portion  230  so that the lead frame  200  and the mold frame  100  may be coupled to each other more firmly. In order to reduce space occupied by the wire  302 , a stepped amount S 2  of the second connection portion  230  may be adjusted to be less than a material thickness S of the lead frame  200 . 
     Light emitted from the light-emitting device chip  300  is reflected by the first and second reflection portions  240  and  101  and the inner side  102  along the second direction D 2 , except the first and second reflection portions  240  of the mold frame  100 , and is emitted out of the light-emitting device package  1 . The polymer, which the mold frame  100  is formed of, discolors if continuously exposed to light and heat irradiated from the light-emitting device chip  300 , and may change chromaticity of light that is being reflected, thereby degrading light quality. 
     Comparing Samples 1 and 3 and Samples 2 and 4 of Table 1, respectively, when the long axis L 1  and the height H 2  from the mounting portion  210  to the upper portion of the light-emitting device package  1  are the same, the shorter the short axis L 2 , the more light flux is emitted. This indicates that more light flux may be incident on an inner side of the light-emitting device package  1  in a short axis direction. 
     According to the current embodiment, a portion of the inner side of the rectangular light-emitting device package  1  that is disposed along the second direction D 2  where more light flux is incident due to the proximity to the light-emitting device chip  300  is formed by using the lead frame  200 . That is, the first reflection portion  240 , which is formed of a metal, is disposed along the short axis direction of the light-emitting device chip  300 . Since the first reflection portion  240  is formed of a metal, properties of the first reflection portion  240  such as discoloration change relatively small compared to a polymer. Accordingly, the light-emitting device package  1  capable of emitting light of uniform quality over a long period of time may be implemented. 
     The first reflection portion  240  may be bent in an upward direction from a boundary of the mounting portion  210  at an angle in the short axis direction. The first reflection portion  240  may have a length that is sufficient to cover a length of the light-emitting device chip  300  in a long axis direction. In other words, a length of the first reflection portion  240  in the long axis direction may be equal to or greater than that of the light-emitting device chip  300  in the long axis direction. An angle to the mounting portion  210  of the first reflection portion  240  may be from about 30 to about 60 degrees. When a height H 3  of the first reflection portion  240  is too high, the light-emitting efficiency is rather decreased, and when the height H 3  is too low, the reflection effects are reduced. Considering this, the height H 3  of the first reflection portion  240  may be set as 0.5 to 1.5 times of the material thickness S of the lead frame  200 . 
     The light-emitting efficiency may also be increased by forming a reflection portion also in the long axis direction of the light-emitting device package  1 . When forming a reflection portion by bending the lead frame  200 , the lead frame  200  needs to be bent from the first and second connection portions  220  and  230 , which makes the structure of the lead frame  200  complicated. According to the light-emitting device package  1 , the second reflection portion  101  is formed as a portion of the mold frame  100  on two sides in the long axis direction. Since the second reflection portion  101  is disposed relatively away from the light-emitting device chip  300  compared to the first reflection portion  240  disposed along the short axis direction, the second reflection portion  101  is less affected by light and heat emitted from the light-emitting device chip  300 . Also, the inner side  102  of the mold frame  100  in the short axis direction is also disposed away from the light-emitting device chip  300  and thus is less affected by light and heat emitted from the light-emitting device chip  300 . By forming the mold frame  100  using a liquid crystal polymer (LCP), which is resistant to heat, deterioration of light quality due to discoloration of the inner side  102  of the mold frame  100  in the short axis direction and the second reflection portion  101  may be reduced. 
     Hereinafter, a method of manufacturing a light-emitting device package according to an embodiment of the present invention will be described. 
     (1) Molding of Lead Frame 
     Referring to  FIG. 6 , a metal plate  400  such as aluminum or copper is pressed or etched, etc. to form the mounting portion  210 , the first and second connection portions  220  and  230 , and the first reflection portion  240 . 
     The first reflection portion  240  is formed by bending the molding portion  210  up about a boundary thereof along the first direction D 1  at an angle in an upward direction. As described above, a length of the first reflection portion  240  in a long axis direction may be equal to or greater than a length of the light-emitting device chip  300  in the long axis direction. An inclination angle (C in  FIG. 3 ) of the first reflection portion  240  with respect to the mounting portion  210  may be 30 to 60 degrees, and the height H 3  of the first reflection portion  240  may be set as 0.5 to 1.5 times of the material thickness S 1  of the lead frame  200 . 
     As illustrated in  FIG. 2 , the first connection portion  220  may be spaced apart from the mounting portion  210  in the first direction D 1  by the gap G 1 . Also, the first connection portion  220  may be stepped with respect to the mounting portion  210  by an amount corresponding to the material thickness S or less of the lead frame  200 . 
     The second connection portion  230  is disposed opposite to the first connection portion  220  with the mounting portion  210  therebetween. As illustrated in  FIG. 2 , the second connection portion  220  may be formed by extending from the mounting portion  210 . Alternatively, the second connection portion  220  may be spaced apart from the mounting portion  210  by the gap G 2 , as illustrated in  FIG. 4 . Alternatively, the second connection portion  220  may be stepped with respect to the mounting portion  210  by an amount corresponding to the material thickness S of the lead frame  200  or less as illustrated in  FIG. 5 . 
     In order to maintain the lead frame  200  connected to the metal plate  400  before performing an injection molding process which will be described below, the first and second connection portions  220  and  230  are formed so as to be connected to the metal plate  400  via first and second support arms  221  and  231 , respectively. The first reflection portion  240  is connected to the metal plate  400  via a third support arm  241 . A washing operation for removing foreign materials from the lead frame  200  may be performed before an injection molding process. In addition, a plating operation may be performed for surface treatment of the lead frame  200 . 
     (2) Molding a Mold Frame 
     Next, the mold frame  100  is coupled to the lead frame  200 . The mold frame  100  may be formed by performing injection molding such as an insert injection molding operation to a polymer such as phenyl propanol amide (PPA), a liquid crystal polymer (LCP), or the like. When LCP is used as a polymer, discoloration possibilities due to light and heat emitted from the light-emitting device chip  300  may be reduced as much as possible to maintain a uniform light quality. For example, the metal plate  400  on which the lead frame  200  is formed is inserted into a mold having a structure in which a form of the mold frame  100  illustrated in  FIGS. 1 through 5  is engraved and the mounting portion  210 , the first and second connection portions  220  and  230 , and the first reflection portion  240  may be exposed, and a polymer is injected into the mold and solidified. Then, as illustrated in  FIG. 7 , a coupled structure  410  in which the mold frame  100  is coupled to the lead frame  200  is manufactured. Since the first through third support arms  221 ,  231 , and  241  are connected to the metal plate  400  through the mold frame  100 , the coupled structure  410  is also connected to the metal plate  400 . 
     (3) First Trimming 
     Next, a first trimming operation is performed. As illustrated in  FIG. 8 , the first and second support arms  221  and  231  respectively connecting the first and second connection portions  220  and  230  to the metal plate  400  are cut to separate the first and second connection portions  220  and  230  from the metal plate  400 . The third support arm  241  is connected to the metal plate  400 , and thus the coupled structure  410  is still connected to the metal plate  400 . 
     (4) Mounting and Wire Bonding of Light-Emitting Device Chip 
     Next, as illustrated in  FIG. 9 , the light-emitting device chip  300  is mounted in the mounting portion  210 . The light-emitting device chip  300  may be attached to the mounting portion  210  using, for example, an adhesive. Then, the wires  301  and  302  are used to respectively connect the first and second connection portions  220  and  230  to a cathode electrode and an anode electrode of the light-emitting device chip  300 . 
     (5) Filling Operation 
     Next, as illustrated in  FIG. 10 , an encapsulation operation of filling the cavity  2  with a transmissive filler such as silicon may be performed. According to necessity, an upper portion or upper and lateral portions of the light-emitting device chip  300  may be coated with a fluorescent material before filling the filler. Alternatively and obviously, the light-emitting device chip  300 , an upper portion or upper and lateral portions of which are coated with a fluorescent material in advance, may be mounted in the mounting portion  210 . 
     (6) Separation 
     Next, as illustrated in  FIG. 11 , the light-emitting device package  1  is separated from the metal plate  400  by cutting the third support arm  241  to complete the manufacture of the light-emitting device package  1 . 
     In the first trimming operation, stress applied to the first and second support arms  221  and  231  may be transferred to the mold frame  100  and the lead frame  200 . Since the first and second support arms  221  and  231 , which are disposed in the same direction as a wire bonding direction, that is, in the long axis direction, are cut in the first trimming operation, the mold frame  100  and the lead frame  200  may deform in the long axis direction temporarily and/or permanently by the stress applied to the first and second support arms  221  and  231 . When the first trimming operation of separating the first and second connection portions  220  and  230  from the metal plate  400  is performed after wire bonding, the wires  301  and  302  may deform or break due to deformation of the mold frame  100  and the lead frame  200  in the long axis direction. In particular, when the first and second connection portions  220  and  230  are respectively spaced apart from the mounting portion  210  by the gaps G 1  and G 2 , the first and second connection portions  220  and  230  are more likely to deform in the first trimming operation, and the possibilities of deformation or break of the wires  301  and  302  may further increase. Thus, in the method of manufacturing a light-emitting device package, according to the current embodiment of the present invention, the first trimming operation of separating the first and second connection portions  220  and  230  from the metal plate  400  is performed before performing a wire bonding operation. 
     A second trimming operation of cutting the third support arm  241  after the wire bonding operation is an operation of cutting the third support arm  241  disposed in the short axis direction, which is a direction perpendicular to the wire bonding direction. Thus, even when the mold frame  100  and the lead frame  200  partially deform, the deformation affects the wires  301  and  302  less than in the first trimming operation. 
     As described above, in the method of manufacturing a light-emitting device package, according to the current embodiment of the present invention, a trimming operation of separating the light-emitting device package  1  from the metal plate  400  is divided into the first trimming operation and the second trimming operation. The first trimming operation of cutting the first and second support arms  221  and  231  in the same direction as the wire bonding direction is performed before a wire bonding operation, and the second trimming operation of cutting the third support arm  241  in a direction perpendicular to the wire bonding direction is performed after a wire bonding operation. Accordingly, the possibilities of deformation or break of the wires  301  and  302  in the trimming operations may be reduced. 
     It should be understood that the exemplary embodiments described therein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for other similar features or aspects in other embodiments.