Patent Publication Number: US-2021193895-A1

Title: Light emitting diode package

Description:
CROSS-REFERENCE OF RELATED APPLICATIONS AND PRIORITY 
     The Present Application is a continuation application of International Application No. PCT/KR/2019/008833 filed Jul. 17, 2019 which claims priority to Korean Applications Nos. 10-2018-0107080 filed Sep. 7, 2018 and 10-2019-0084061 filed Jul. 11, 2019, the disclosures of which are incorporated by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     Embodiments of the present disclosure relate to a light emitting diode package and, more particularly, to a light emitting diode package capable of improving luminous efficacy of light emitted therefrom. 
     BACKGROUND 
     A light emitting diode is an inorganic semiconductor device that emits light through recombination of electrons and holes. In recent years, light emitting diodes are used in various fields including a display apparatus, a vehicular lamp, general lighting, and the like. The light emitting diodes have various advantages, such as longer lifespan, lower power consumption and rapider response time than existing light sources. With such advantages, the light emitting diodes have replaced existing light sources. 
     In manufacture of a package using such a light emitting diode, a Zener diode can be mounted inside the package. Conventionally, the Zener diode is exposed from the light emitting diode package or disposed inside a housing thereof. 
     In the structure where the Zener diode is exposed from the light emitting diode package, some fraction of light emitted from the light emitting diode is absorbed by the Zener diode, thereby causing light loss. 
     In the structure having the Zener diode disposed inside the housing of the light emitting diode package, the size of the housing may increase. The housing is formed by injection molding, and it is desirable to avoid damage to electrical connection of the Zener diode in the housing. 
     SUMMARY 
     Embodiments of the present disclosure provide a light emitting diode package capable of minimizing light loss by a Zener diode disposed therein. 
     Embodiments of the present disclosure provide a light emitting diode that allows convenient installation of a Zener diode therein while improving stability in electrical connection of the Zener diode. 
     Embodiments of the present disclosure provide a light emitting diode that can minimize deterioration in light loss and reliability due to discoloration of a lead frame by sulfur dioxide or hydrogen sulfide by minimizing an exposed region of the lead frame, in which a light emitting diode and a Zener diode are disposed. 
     In accordance with embodiments of the present disclosure, a light emitting diode package includes a body having a cavity open at an upper side thereof and including beveled surfaces constituting side surfaces of the cavity, a first lead and a second lead supported by the body and separated from each other to be electrically insulated from each other, a light emitting diode chip electrically connected to the first lead and the second lead and mounted in the cavity of the body, and a Zener diode mounted in the cavity of the body. At least one of the beveled surfaces of the body surrounding the light emitting diode chip has a different shape from other beveled surfaces thereof. The Zener diode is mounted at one side of the light emitting diode chip, and one of the beveled surfaces surrounding the light emitting diode chip is placed near the Zener diode. 
     In at least one variant, another beveled surface of the beveled surfaces surrounding the light emitting diode chip may have an inclination gradually increasing in an upward direction thereof. One of the beveled surfaces surrounding the light emitting diode chip may have the same inclination in an upward direction thereof. 
     In another variant, the light emitting diode package may further include a cover portion covering one of the beveled surfaces of the body surrounding the light emitting diode chip. The cover portion may be disposed to cover the Zener diode. The cover portion may include a beveled surface having an inclination gradually increasing in an upward direction thereof. The cover portion may be formed of a substance containing a reflective material. 
     In yet another variant, the light emitting diode package may further include a coating layer covering the cover portion and the other beveled surfaces of the body surrounding the light emitting diode chip. The coating layer may be formed of a substance containing a reflective material. The reflective material may include at least one selected from among TiO 2  and Al 2 O 3 . 
     In another variant, the body may include a stepped portion dividing a mounting region of the light emitting diode chip from a mounting region of the Zener diode, and the stepped portion may protrude upwards above the mounting region of the light emitting diode chip. 
     In at least one variant, the light emitting diode package may further include a cover portion covering one of the beveled surfaces of the body surrounding the light emitting diode chip, wherein the cover portion is formed to a height of the stepped portion. 
     In another variant, the Zener diode may be mounted on the first lead to be electrically connected to the first lead and may be electrically connected to the second lead through a wire. The first lead and the second lead exposed to a mounting region of the light emitting diode chip may partially protrude in an upward direction. Two of the beveled surfaces of the body surrounding the light emitting diode chip may be disposed at opposite sides. 
     In further another variant, at least one of the beveled surfaces of the body surrounding the light emitting diode chip may have a lower portion extending to the light emitting diode chip to be disposed at one end thereof under the light emitting diode chip. 
     In another variant, a portion of the body constituting a bottom of the cavity may form an upwardly protruding dam. At least a portion of the dam may be disposed under the light emitting diode chip. 
     In further another variant, the first lead may include a first mount on which the light emitting diode chip is mounted. The second lead may include a second mount on which the light emitting diode chip is mounted. At least one side surface of each of the first mount and the second mount may have a stepped structure. 
     In at least one variant, the light emitting diode package may further include a wavelength conversion member filling the cavity of the body to cover the light emitting diode chip. The light emitting diode package may further include a first wavelength conversion member and a second wavelength conversion member. The first wavelength conversion member may cover at least an upper surface of the light emitting diode chip. The second wavelength conversion member may fill the cavity of the body to cover the light emitting diode chip and the first wavelength conversion member. The first wavelength conversion member and the second wavelength conversion member may convert light into light in different wavelength bands. 
     In some forms, a region of a light emitting diode package in which a Zener diode is disposed is covered by a substance containing a reflective material to form a beveled cover portion, thereby minimizing loss of light emitted from a light emitting diode chip by the Zener diode, and a wire electrically connecting the Zener diode to a first lead or a second lead is covered by the cover portion, thereby improving stability of electrical connection of the Zener diode while reducing external impact. 
     Further, with the Zener diode disposed inside the light emitting diode package, beveled surfaces of a cavity of a housing in which a light emitting diode chip is disposed have similar shapes as much as possible, thereby enabling uniform emission of light from the light emitting diode package. 
     An exposed region of a lead frame in which the light emitting diode and the Zener diode are mounted is minimized, thereby preventing deterioration in reliability by protecting products from sulfur dioxide or hydrogen sulfide causing discoloration of the lead frame in outdoor use of the light emitting diode package. 
     Further, the light emitting diode package according to these embodiments employs a flip-chip type light emitting diode chip and does not require a separate component for electrical connection of the light emitting diode chip to the lead frame, thereby minimizing the size of the light emitting diode package. 
     Further, in the body of the light emitting diode package, a beveled surface on which the Zener diode is disposed is formed in a different structure from other surfaces of the body to secure a space for installation of the Zener diode, thereby minimizing the size of the light emitting diode package. 
     Further, a portion of the lead frame may be exposed to a lower surface of the body, thereby facilitating discharge of heat from the light emitting diode chip to the outside through the lead frame. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of a light emitting diode package according to a first embodiment of the present disclosure. 
         FIG. 2  is a plan view of the light emitting diode package of  FIG. 1   
         FIG. 3  is a cross-sectional view taken along line I-I′ of  FIG. 2 . 
         FIG. 4  is a perspective view of a body of the light emitting diode package of  FIG. 1 . 
         FIG. 5  is a cross-sectional view taken along line J-J′ of  FIG. 4 . 
         FIG. 6  illustrates a lead frame of the light emitting diode package of  FIG. 1 . 
         FIG. 7  is a view of a modification of the lead frame as shown in  FIG. 6 . 
         FIG. 8  is a view of a modification of the light emitting diode package to which the modification of the lead frame as shown in  FIG. 7  is applied, illustrating the lead frame exposed to a lower surface of the light emitting diode package. 
         FIG. 9  is a perspective view of the light emitting diode package as shown in  FIG. 1 , illustrating a light emitting diode chip and a Zener diode mounted on the body of the light emitting diode package. 
         FIG. 10  is a perspective view of the light emitting diode package as shown in  FIG. 1 , illustrating a cover portion formed on the body of the light emitting diode package. 
         FIG. 11  is a perspective view of a light emitting diode package according to a second embodiment of the present disclosure. 
         FIG. 12  is a plan view of the light emitting diode package as shown in  FIG. 11 . 
         FIG. 13  is a cross-sectional view taken along line K-K′ of  FIG. 12 . 
         FIG. 14  is a perspective view of a body of a light emitting diode package according to a third embodiment of the present disclosure. 
         FIG. 15  is a perspective view of a body of a light emitting diode package according to a fourth embodiment of the present disclosure. 
         FIG. 16  is a perspective view of a light emitting diode package according to the fifth embodiment of the present disclosure. 
         FIG. 17  is a top view of a lower portion of a body included in the light emitting diode package shown in  FIG. 16 . 
         FIG. 18  is a plan view of a lead frame applied to the light emitting diode package according to the fifth embodiment. 
         FIG. 19  is a cross-sectional view taken along line A 1 -A 2  of  FIG. 16 . 
         FIG. 20  is a cross-sectional view taken along line B 1 -B 2  of  FIG. 16   
         FIG. 21  illustrates a light emitting diode package according to a sixth embodiment of the present disclosure. 
         FIG. 22  illustrates a light emitting diode package according to an seventh embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. 
       FIG. 1  is a perspective view of a light emitting diode package according to a first embodiment of the present disclosure.  FIG. 2  is a plan view of the light emitting diode package according to the first embodiment of the present disclosure and  FIG. 3  is a cross-sectional view taken along line I-I′ of  FIG. 2 . 
     Referring to  FIG. 1  to  FIG. 3 , a light emitting diode package  100  according to a first embodiment includes a housing  110 , a light emitting diode chip  120 , a lead frame  130 , and a Zener diode  140 . 
     In this embodiment, the housing  110  includes a body  111 , a cover portion  113  ( FIG. 3 ), and a coating layer  115 . 
     As shown in the drawings, the body  111  may have a substantially rectangular shape in plan view and may be configured to surround the lead frame  130  while supporting the lead frame  130 . The housing  110  may have a cavity V open at one side thereof and may receive the light emitting diode chip  120  in the cavity V. Here, the cavity V may have a greater depth than the height of the light emitting diode chip  120 . 
     Referring to  FIG. 2  and  FIG. 3 , the body  111  may be divided into Region A and Region B. Region A may be a region in which the light emitting diode chip  120  is mounted and Region B may be a region in which the Zener diode  140  is mounted. 
     In Region A of the body  111 , beveled surfaces of the cavity V surrounding the light emitting diode chip  120  may have the same shape with reference to the light emitting diode chip  120 . Specifically, a first body beveled surface  111   a  is formed in Region A and may be a curved surface having an inclination gradually increasing to become a steep slope in an upward direction, as shown in  FIG. 3 . The beveled surfaces according to the teachings of the present disclosure include sloping surfaces rather than squared surfaces or surfaces perpendicular to an upper surface of the body  111 . In some forms, one or more of the beveled surfaces have a ramp shape, such as a linear cross-sectional shape. In other forms, one or more of the beveled surfaces have a U-shape, such as a curved cross-sectional shape. In other words, the beveled surfaces include U-shaped beveled surfaces. 
     The first body beveled surface  111   a  in Region A is formed on each of three surfaces of the cavity V corresponding to three sides of the light emitting diode chip  120 . An inner side of the first body beveled surface  111   a  shown in  FIG. 3  may be disposed near the light emitting diode chip  120 . As a result, light emitted from the light emitting diode chip  120  is reflected by the first body beveled surface  111   a  to be emitted from the light emitting diode package  100  in the upward direction. 
     A second body beveled surface  111   b  is formed in Region B and may be a linear cross-sectional shape, as shown in  FIG. 3 . However, it should be understood that, when the first body beveled surface  111   a  is a curved surface, the second body beveled surface  111   b  is not limited to a linear cross-sectional shape and may have a curved cross-sectional shape. 
     As shown in  FIG. 2 , Region B may have a greater width than Region A in a longitudinal direction. As will be described below, this structure is designed to secure a space for installation of the cover portion  113  covering the second body beveled surface  111   b.    
     Referring to  FIG. 3 , the cover portion  113  is disposed to cover the second body beveled surface  111   b  in Region B. The cover portion  0113  is formed to a thickness so as to cover the Zener diode  140  disposed in Region B without extending beyond a stepped portion  112 . As shown in  FIG. 3 , the cover portion  113  may have a cover beveled surface  113   b  having a gentle inclination. The cover beveled surface  113   b  may be a curved surface and may be formed to have an inclination gradually decreasing to form a gentle slope in a downward direction thereof. 
     Although the cover portion  113  is illustrated as not extending beyond the stepped portion  112 , it should be understood that other implementations are possible. Alternatively, a portion of the cover portion  113  may extend to a mounting location of the light emitting diode chip  120  beyond the stepped portion  112 . That is, the cover portion  113  may be formed of a viscous substance containing a reflective material so as to cover the second body beveled surface  111   b  and the Zener diode  140 . Here, the reflective material may include TiO 2 , Al 2 O 3 , and the like. 
     With the structure having the cover portion  113  formed in Region B, the cover beveled surface  113   b  formed in the cavity V of the light emitting diode package  100  may be formed in a similar shape to the shape of the first body beveled surface  111   a . With this structure, a reflective surface formed in the cavity V has substantially the same shape in all directions with reference to the light emitting diode chip  120 . 
     The coating layer  115  is formed of a coating material containing a reflective material to cover the first body beveled surface  111   a  and the cover beveled surface  113   b . Here, the reflective material may include TiO 2 , Al 2 O 3 , and the like. That is, the coating layer  115  may be formed to cover all regions in the cavity V of the light emitting diode package  100  excluding the light emitting diode chip  120 . To this end, the coating layer  115  may be formed on the first body beveled surface  111   a  and the cover beveled surface  113   b  by various methods, such as spraying, dispensing, jetting, film attachment, sputtering, and e-beam deposition, which may be performed above the cavity V of the light emitting diode package  100 , with an upper portion of the light emitting diode chip  120  masked. 
     As a result, in the light emitting diode package  100 , a first coating beveled surface  115   a  may be formed in Region A of the cavity V and a second coating beveled surface  115   b  may be formed in Region B of the cavity V, as shown in  FIG. 3 . 
       FIG. 4  is a perspective view of the body of the light emitting diode package according to the first embodiment of the present disclosure and  FIG. 5  is a cross-sectional view taken along line J-J′ of  FIG. 4 . 
     Referring to  FIG. 4 , the body  111  of the light emitting diode package  100  according to this embodiment will be described in detail. 
     As shown in  FIGS. 4-5 , the body  111  is formed at the center thereof with the cavity V to receive the light emitting diode chip  120  and the Zener diode  140  therein. The cavity V is open at an upper side thereof. The cavity V may have a substantially rectangular shape in plan view. The cavity V has the first body beveled surface  111   a  and the second body beveled surface  111   b  formed on side surfaces thereof to reflect light emitted from the light emitting diode chip  120 . 
     The first body beveled surface  111   a  is formed in Region A so as to surround the light emitting diode chip  120  at three sides of the cavity V having a rectangular shape. The first body beveled surface  111   a  may have an inclination gradually increasing in the upward direction thereof. 
     The second body beveled surface  111   b  is formed in Region B at one side of the light emitting diode chip  120  in the cavity V having a rectangular shape. The second body beveled surface  111   b  may have the same inclination. 
     The light emitting diode chip  120  is mounted in a central region of the cavity V, in which a first lead  132  and a second lead  134  may be partially exposed to the bottom of the cavity V. Here, the first lead  132  and the second lead  134  may be partially exposed to the mounting region of the light emitting diode chip  120  in the upward direction. Electrode pads of the light emitting diode chip  120  may electrically contact the first lead  132  and the second lead  134  exposed to protrude in the upward direction, respectively. 
     Here, the mounting region of the light emitting diode chip  120  may be depressed below inner distal ends of the first body beveled surface  111   a  and the second body beveled surface  111   b , as shown in the drawings. 
     Although one light emitting diode chip  120  may be disposed at the center of the cavity V in this embodiment, it should be understood that multiple light emitting diode chips  120  may be disposed in the cavity. 
     The cavity V may be formed at one side thereof, that is, in Region B, with a Zener diode mounting portion Za on which the Zener diode  140  is mounted, and a wire bonding portion Zb for electrical connection of the Zener diode  140  through a wire. 
     The Zener diode mounting portion Za may be disposed where the first lead  132  is partially exposed to the bottom surface of the cavity V, and the wire bonding portion Zb may be disposed where the second lead  134  is partially exposed to the bottom surface of the cavity V. The Zener diode mounting portion Za and the wire bonding portion Zb may be electrically insulated from each other by the body  111 . 
     In this embodiment, the Zener diode mounting portion Za is disposed on the first lead  132  and the wire bonding portion Zb is disposed on the second lead  134 . Alternatively, the Zener diode mounting portion Za may be disposed on the second lead  134  and the wire bonding portion Zb may be disposed on the first lead  132 . 
     The stepped portion  112  may be disposed between Region A and Region B. The stepped portion  112  may protrude above the surrounding region to divide the mounting region of the light emitting diode chip  120  from a mounting region of the Zener diode  140 . Further, the stepped portion  112  may be formed to cross the bottom of the cavity V and the lead frame  130  may be exposed at both sides of the stepped portion  112 , as shown in  FIG. 5 . 
       FIG. 6  is a perspective view of the lead frame of the light emitting diode package according to the first embodiment of the present disclosure. 
     Referring to  FIG. 6 , according to this embodiment, the lead frame  130  includes the first lead  132  and the second lead  134 . The first lead  132  may be electrically connected to one of the electrode pads of the light emitting diode chip  120  and the Zener diode  140  may be mounted on the first lead  132 . The second lead  134  may be electrically connected to the other electrode pad of the light emitting diode chip  120  and may be electrically connected to the Zener diode  140  through a wire. 
     In this embodiment, the lead frame  130  may be formed in a shape shown in  FIG. 6  and may be disposed inside the body  111  excluding the mounting region of the light emitting diode chip  120  and a location to which the Zener diode  140  is electrically connected. Further, the first lead  132  and the second lead  134  may be partially exposed from the body  111  so as to be electrically connected to the outside. 
     Further, in this embodiment, the first lead  132  and the second lead  134  may be at least partially exposed to a lower surface of the body  111 . With the structure having the first lead  132  and the second lead  134  exposed to the lower surface of the body  111 , the light emitting diode package allows heat generated from the light emitting diode chip  120  to be discharged through the first lead  132  and the second lead  134 . 
       FIG. 7  illustrates a modification of the lead frame of the light emitting diode package according to the first embodiment of the present disclosure and  FIG. 8  illustrates a modification of the light emitting diode package according to the first embodiment of the present disclosure to which the modification of the lead frame as shown in  FIG. 7  is applied.  FIG. 8  illustrates the lead frame exposed to the lower surface of the light emitting diode package. 
     Referring to  FIG. 7 , in this embodiment, the lead frame  130  may be formed in a shape shown in  FIG. 7 . In the modification, the lead frame  130  includes a first lead  132 ′ and a second lead  134 ′. The first lead  132 ′ may be electrically connected to one of the electrode pads of the light emitting diode chip  120  and the Zener diode  140  may be mounted on the first lead  132 ′. The second lead  134 ′ may be electrically connected to the other electrode pad of the light emitting diode chip  120  and may be electrically connected to the Zener diode  140  through the wire. 
     The lead frame  130  may be disposed inside the body  111  excluding the mounting regions of the light emitting diode and the Zener diode  140  and a portion thereof electrically connected to the Zener diode  140 . 
     Referring to  FIG. 8 , in this embodiment, the first lead  132  and the second lead  134  may be at least partially exposed to the lower surface of the body  111 . Accordingly, in the structure where the first lead  132  and the second lead  134  are exposed to the lower surface of the body  111 , the light emitting diode package allows heat generated from the light emitting diode chip  120  to be discharged from the lower surface of the body  111  through the first lead  132  and the second lead  134 . As heat generated from the light emitting diode chip  120  can be discharged through the first lead  132  and the second lead  134 , the light emitting diode package allows more efficient heat dissipation from the light emitting diode chip  120 . 
       FIG. 9  is a perspective view of the light emitting diode package according to the first embodiment of the present disclosure, illustrating the light emitting diode chip  120  and the Zener diode  140  mounted on the body of the light emitting diode package. 
     Referring to  FIG. 9 , the light emitting diode chip  120  and the Zener diode  140  are mounted on the body  111 . When the body  111  is formed to support the lead frame  130 , the light emitting diode chip  120  is mounted thereon to be electrically connected to the first lead  132  and the second lead  134  exposed to the bottom of the cavity V. Then, the Zener diode  140  may be mounted on the Zener diode mounting portion Za and electrically connected to the wire bonding portion Zb through a wire. 
       FIG. 10  is a perspective view of the light emitting diode package according to the first embodiment of the present disclosure, illustrating the cover portion  113  formed on the body of the light emitting diode package. 
     Referring to  FIG. 10 , the cover portion  113  is formed in Region B, in which the Zener diode  140  is mounted, so as to cover the Zener diode  140  and the wire. The cover portion  113  also covers the second body beveled surface  111   b  to form the cover beveled surface  113   b.    
     Specifically, the cover portion  113  also covers the second body beveled surface  111   b  having a linear cross-sectional shape, thereby forming a beveled surface having a curvature, like the first body beveled surface  111   a . In addition, as shown in  FIG. 10 , the cover portion  113  may fill a portion of Region A, in which the cavity V has a greater width than a portion of the cavity V in Region B, so as to minimize a boundary between Region A and Region B. 
     Accordingly, the first body beveled surface  111   a  and the cover beveled surface  113   b  corresponding to an inner wall of the cavity V, which surrounds the light emitting diode chip  120 , may be formed substantially in the same shape. 
     With the cover portion  113  disposed on the body  111 , the coating layer  115  is formed on the cavity V, thereby completing the light emitting diode package  100 , as shown in  FIG. 1  to  FIG. 3 . 
       FIG. 11  is a perspective view of a light emitting diode package according to a second embodiment of the present disclosure and  FIG. 12  is a plan view of the light emitting diode package according to the second embodiment of the present disclosure.  FIG. 13  is a cross-sectional view taken along line K-K′ of  FIG. 12 . 
     Referring to  FIG. 11  to  FIG. 13 , a light emitting diode package  100  according to the second embodiment includes a housing  110 , a light emitting diode chip  120 , a lead frame  130 , and a Zener diode  140 . Detailed description of the same components as those of the first embodiment will be omitted. The same components are described with the same reference numerals for convenience of descriptions, although there may be differences in different embodiments. 
     According to this embodiment, the housing  110  includes a body  111 , a cover portion  113 , and a coating layer  115 . 
     The body  111  may be divided into Region A, Region B, and Region C. In this embodiment, Region A and Region B have the same shapes as those of the first embodiment, and Region C may have a second body beveled surface  111   b  as in Region B. The second body beveled surface  111   b  formed in Region C may have a linear cross-sectional shape. Further, Region C may have a greater width than Region A in the longitudinal direction. 
     The cover portion  113  may be disposed to cover the second body beveled surface  111   b  in Region C. The cover portion  113  formed in Region C may have the same shape as the cover portion  113  formed in Region B. However, Region C is not provided with the Zener diode  140 , unlike Region B. Further, the cover portion  113  may have a cover beveled surface  113   b  having a gentle inclination. The cover beveled surface  113   b  formed in Region C may have the same inclination as the cover beveled surface  113   b  formed in Region B, so as to have a linearly symmetrical shape. Further, the cover portion  113  may be formed of a viscous substance containing a reflective material. 
     In this embodiment, the coating layer  115  is formed of a coating material containing a reflective material to cover the first body beveled surface  111   a , the cover beveled surface  113   b  of Region B and the cover beveled surface  113   c  of Region C. The coating layer  115  may be formed of the same material and in the same manner as the coating layer of the first embodiment. 
     Accordingly, a first coating beveled surface  115   a  may be formed in Region A and a second coating beveled surface  115   b  may be formed in Region B and Region C. As shown in  FIGS. 11-13 , the first coating beveled surface  115   a  and the second coating beveled surface  115   b  may have the same shape despite difference in inclination therebetween. 
     According to this embodiment, as Region C has the same shape as Region B, Region B becomes symmetrical to Region C to allow uniform light emission when light emitted from the light emitting diode chip  120  is reflected and emitted from the light emitting diode package  100 . 
       FIG. 14  is a perspective view of a body of a light emitting diode package according to a third embodiment of the present disclosure. 
     Referring to  FIG. 14 , detailed description of the same components of the light emitting diode package according to the third embodiment as those of the first embodiment will be omitted and the following description will focus on different features of the body  111  according to the third embodiment. 
     In this embodiment, the body  111  has a region for mounting the light emitting diode chip  120  at an inner center of the cavity on the bottom thereof, and a first lead  132  and a second lead  134  may be exposed to the mounting region of the light emitting diode chip  120 , as shown in  FIG. 14 . 
     Further, a stepped portion  112  is disposed at one side of the region in which the light emitting diode chip  120  is mounted, and a Zener diode mounting portion Za and a wire bonding portion Zb are disposed at one side of the stepped portion  112 . Here, a division step  112   a  is disposed between the Zener diode mounting portion Za and the wire bonding portion Zb. 
     As shown in  FIG. 14 , the division step  112   a  may be disposed between the Zener diode mounting portion Za and the wire bonding portion Zb, and may be a portion of the body  111 . Further, the division step  112   a  may have the same height as the stepped portion  112 . By the division step  112   a , the Zener diode mounting portion Za and the wire bonding portion Zb may have a depressed shape with respect to surrounding regions. 
     In this embodiment, the division step  112   a  may have a vertically protruding shape protruding in an upward direction of the Zener diode mounting portion Za and the wire bonding portion Zb. 
       FIG. 15  is a perspective view of a body of a light emitting diode package according to a fourth embodiment of the present disclosure. 
     Referring to  FIG. 15 , detailed description of the same components of the light emitting diode package according to the fourth embodiment as those of the first embodiment will be omitted and the following description will focus on different features of the body  111  according to the fourth embodiment. 
     In this embodiment, the body  111  has a region for mounting the light emitting diode chip  120  at an inner center of the cavity on the bottom thereof, and a first lead  132  and a second lead  134  may be exposed to the mounting region of the light emitting diode chip  120 , as shown in  FIG. 15 . 
     Further, a stepped portion  112  is disposed at one side of the region in which the light emitting diode chip  120  is mounted, and a Zener diode mounting portion Za and a wire bonding portion Zb are disposed at one side of the stepped portion  112 . Here, a division step  112   a  is disposed between the Zener diode mounting portion Za and the wire bonding portion Zb. 
     As shown in  FIG. 15 , the division step  112   a  may be disposed between the Zener diode mounting portion Za and the wire bonding portion Zb, and may be a portion of the body  111 . Further, as shown in  FIG. 15 , the division step  112   a  may include a beveled surface beveled in a direction from the Zener diode mounting portion Za towards the wire bonding portion Zb and a beveled surface beveled in a direction from the wire bonding portion Zb towards the Zener diode mounting portion Za. That is, the division step  112   a  may have a triangular cross-sectional shape and may have the same height as the stepped portion  112 . 
     As the division step  112   a  has the beveled surfaces, it is possible to minimize the length of a wire electrically connecting the Zener diode  140  on the Zener diode mounting portion Za to the wire bonding portion Zb. 
       FIG. 16  to  FIG. 20  are views of a light emitting diode package according to a fifth embodiment of the present disclosure. 
       FIG. 16  is a perspective view of the light emitting diode package  200  according to the fifth embodiment of the present disclosure.  FIG. 17  is a top view of a lower portion of a body  211 .  FIG. 18  is a plan view of a lead frame  230  applied to the light emitting diode package  200  according to the fifth embodiment. In addition,  FIG. 19  is a cross-sectional view taken along line A 1 -A 2  of  FIG. 16  and  FIG. 20  is a cross-sectional view taken along line B 1 -B 2  of  FIG. 16 . 
     The following description will focus on different features of the light emitting diode package  200  according to the fifth embodiment. 
     The light emitting diode package  200  according to the fifth embodiment includes a housing  210 , a light emitting diode chip  120 , a lead frame  230 , a Zener diode  140 , and a wavelength conversion member  250 . 
     Referring to  FIG. 19  and  FIG. 20 , a cavity V has a first body beveled surface  211   a , one end of which is placed under the light emitting diode chip  120 . Here, the one end of the first body beveled surface  211   a  corresponds to one end of a lower portion of the first body beveled surface  211   a  extending to the light emitting diode chip  120 . 
     Further, the body  211  has a dam structure formed by a convex portion of a lower surface of the cavity V in the upward direction. A dam  212  is disposed between a cover portion  213 , which covers a second body beveled surface  211   b  and the Zener diode  140 , and the light emitting diode chip  120 . Further, as shown in  FIG. 20 , a portion of the dam  212  is disposed under the light emitting diode chip  120 . The dam  212  convexly protruding from the bottom of the cavity V may reflect light emitted from a lower side of the light emitting diode chip  120  in the upward direction. 
     The cover portion  213  covers the Zener diode  140  mounted on the Zener diode mounting portion Za. For example, the cover portion  213  is formed to cover the Zener diode  140  by filling a gap between the second body beveled surface  211   b  and the dam  212  with a viscous cover resin. Here, the dam  212  can prevent the cover resin from entering the region in which the light emitting diode chip  120  is mounted. Here, the viscous resin is a material forming the cover portion  213 . For example, the cover resin may be a silicone resin containing a reflective material. 
       FIG. 17  is a plan view of the light emitting diode package  200  before an upper portion of the body  211  is not formed. That is,  FIG. 17  shows an upper surface of a lower portion of the body  211 . Here, the upper portion of the body  211  constitutes the cavity V and surrounds the light emitting diode chip  120  and the Zener diode  140 . 
     The body  211  fills a gap between a first lead  232  and a second lead  234  to form the dam  212 . As shown in  FIG. 17 , the dam  212  is formed along the circumference of a mounting region  215  in which the light emitting diode chip  120  is mounted. With this structure, the dam  212  can prevent a body resin from entering the mounting region  215  in the course of forming the upper portion of the body  211 . Here, the body resin may be a material for the body  211 . For example, the body resin may be a silicone resin containing a reflective material. 
     For description of the structure of the dam  213 , the body  211  is divided into the upper portion and the lower portion. However, it should be noted that, since the upper portion and the lower portion of the body  211  are formed of the same material, the body  211  becomes an integrated structure in the course of forming the body  211 . 
     Further, referring to  FIG. 16 , the cover portion  213  has a structure covering the entirety of one surface of the body  211  constituting the cavity V. However, it should be understood that the cover portion  213  is not limited thereto. The cover portion  213  may have a structure covering 90% or more of the one surface of the body  211  so as to cover the Zener diode  140 , the Zener diode mounting portion Za, and the wire bonding portion Zb. 
     A bonding member  240  is interposed between a lower surface of the light emitting diode chip  120  and the lead frame  230 , as shown in  FIG. 19 . That is, the light emitting diode chip  120  is attached to the lead frame  230  by the bonding member  240 . Further, the bonding member  240  includes an electrically conductive material and serves to electrically connect the light emitting diode chip  120  to the lead frame  230 . For example, the bonding member  240  may be formed of solders. 
     The lead frame  230  includes the first lead  232  and the second lead  234 . 
     The first lead  232  includes a first mounting portion  233  in which the light emitting diode chip  120  is mounted, and the second lead  234  includes a second mounting portion  235  in which the light emitting diode chip  120  is mounted. 
     A side surface of each of the first mounting portion  233  and the second mounting portion  235  has a stepped structure. 
     Referring to  FIG. 19 , one side surface of each of the first mounting portion  233  and the second mounting portion  235  has an upper portion protruding more than a lower portion thereof. Here, the one side surface of the first mounting portion  233  faces the one side surface of the second mounting portion  235 , as shown in  FIGS. 18 and 19 . 
     Further, the other side surface of each of the first mounting portion  233  and the second mounting portion  235  has a central portion protruding more than upper and lower portions thereof, as shown in  FIG. 19 . Here, the other side surface of each of the first mounting portion  233  and the second mounting portion  235  is opposite to the one side surface thereof. 
     Further, a protruding portion of each of the first mounting portion  233  and the second mounting portion  235  is formed with a concave groove  237 . 
     With this structure, the protruding portion is inserted into one surface of the body  211  adjoining the first mounting portion  233  and the second mounting portion  235 . Further, the groove  237  of the protruding portion is filled with the body  211 . 
     As such, the light emitting diode package  200  has the structure where the protruding portion of each of the first lead  232  and the second lead  234  is inserted into the body  211  and the body  211  is inserted into the grooves  237  formed on the protruding portions. That is, the light emitting diode package  200  has a double engagement structure where the first lead  232  and the second lead  234  engage with the body  211 . With this structure of the light emitting diode package  200 , the first lead  232  and the second lead  234  can be more firmly coupled to the body  211 . Further, such a structure of the light emitting diode package  200  blocks a penetration path of foreign matter, thereby preventing damage to internal components of the light emitting diode package  200  due to penetration of foreign matter. Here, the foreign matter may include moisture, dust, and the like present outside the light emitting diode package  200 . 
     Further, a side surface of the first lead  232  facing the other side surface of the first mounting portion  233  has a lower portion protruding more than an upper portion thereof. Further, a side surface of the second lead  234  facing the other side surface of the second mounting portion  235  has a lower portion protruding more than an upper portion thereof, as shown in  FIG. 19 . 
     Further, an upper surface of each of the first lead  232  and the second lead  234  may be formed with at least one groove  217 , as shown in  FIG. 19 . The grooves  217  may be filled with the body  211 . 
     Referring to  FIG. 20 , both side surfaces of the first mounting portion  233  of the first lead  232  have a structure where an upper portion thereof protrudes more than a lower portion thereof.  FIG. 19  and  FIG. 20  are cross-sectional views observed in opposite directions. That is, both side surfaces of the first mounting portion  233  shown in  FIG. 19  are opposite to both side surfaces of the first mounting portion  233  shown in  FIG. 20 . 
     Further, although not shown in  FIG. 20 , the second mounting portion  235  of the second lead  234  may also have the same structure as the first mounting portion  233 . 
     Referring to  FIG. 19 , the first lead  232  is formed with a through-hole  219  between the first mounting portion  233  and an outer side surface thereof. Further, the second lead  234  is formed with a through-hole  219  between the second mounting portion  235  and an outer surface thereof. Here, the outer surface refers to one surface exposed on a side surface of the body  211 . The through-hole  219  may have various structures. In this embodiment, the through-hole  219  has an elliptical shape in light of strength (thickness) of the lead frame  230  around the through-hole  219 , the area of the through-hole  219 , and ease in formation of the through-hole  219 . 
     A bonding area between the lead frame  230  and the body  211  is increased by the through-hole  219  and the multi-stepped structure of the first lead  232  and the second lead  234  described with reference to  FIG. 18  to  FIG. 20 . Further, the multi-stepped structure of the first lead  232  and the second lead  234  increases a penetration path distance of foreign matter, thereby preventing damage to the light emitting diode package  200  due to penetration of foreign matter. As a result, the light emitting diode package  200  has improved reliability. 
     The wavelength conversion member  250  is formed in the cavity V of the body  211 . The wavelength conversion member  250  includes a light transmitting resin and a wavelength conversion material dispersed in the light transmitting resin. For example, the light transmitting resin may be an epoxy resin or a silicone resin. 
     The wavelength conversion material converts the wavelength of light emitted from the light emitting diode chip  120 . For example, the wavelength conversion material may be a phosphor. 
     In this embodiment, the wavelength conversion member  250  may be formed by mixing a red phosphor with a green phosphor in the light transmitting resin. For improvement in luminous intensity, the wavelength conversion member  250  may further include a blue phosphor. The light emitting diode package  200  may emit a mixture of light emitted from the light emitting diode chip  120  and light excited by each of the phosphors. The kinds of phosphors in the light transmitting resin may be selected in various ways depending on the color of light emitted from the light emitting diode package  200 . 
     As shown in  FIG. 19  and  FIG. 20 , a greater amount of the wavelength conversion material may be dispersed at a lower portion of the light transmitting resin than at an upper portion thereof. That is, the wavelength conversion material may be present at a higher concentration on the bottom of the cavity V and around the light emitting diode chip  120  than at the upper portion of the light transmitting resin. That is, the wavelength conversion member  250  may have a structure where the wavelength conversion material has an upwardly convex distribution at a central portion of the wavelength conversion member  250 . 
     The wavelength conversion member  250  filling the cavity V may surround the light emitting diode chip  120  to protect the light emitting diode chip  120  from external materials and external impact. 
       FIG. 21  is a sectional view of a light emitting diode package according to a sixth embodiment of the present disclosure. 
     The light emitting diode package  300  according to the sixth embodiment has the same structure as the light emitting diode package according to the above fifth embodiment excluding the wavelength conversion member. The following description will focus on different features of the light emitting diode package  300  according to the sixth embodiment. 
     Referring to  FIG. 21 , the light emitting diode package  300  includes a first wavelength conversion member  352  and a second wavelength conversion member  354 . 
     The first wavelength conversion member  352  may be formed to cover an upper surface of the light emitting diode chip  120 . For example, the first wavelength conversion member  352  may be formed by dispersing a first wavelength conversion material in a light transmitting film. 
     The second wavelength conversion member  354  may be formed to cover the light emitting diode chip  120  and the first wavelength conversion member  352  by filling the cavity V of the body  211 . For example, the second wavelength conversion member  354  may be formed by dispersing a second wavelength conversion material in a light transmitting film. Here, as shown in  FIG. 21 , the second wavelength conversion material may have an upwardly convex distribution in the region where the light emitting diode chip  120  is disposed. 
     The first wavelength conversion material and the second wavelength conversion material convert light into light in different wavelength bands. For example, the first wavelength conversion material may be a red phosphor and the second wavelength conversion material may be a green phosphor. 
     Although  FIG. 21  shows the first wavelength conversion member  352  covering only the upper surface of the light emitting diode chip  120  in this embodiment, it should be understood that the light emitting diode chip  120  may cover the upper and side surfaces of the light emitting diode chip  120 . 
       FIG. 22  is a sectional view of a light emitting diode package according to an seventh embodiment of the present disclosure. 
     The light emitting diode package  400  according to the seventh embodiment has the same structure as the light emitting diode package according to the sixth embodiment excluding the wavelength conversion member. Accordingly, the following description will focus on different features of the light emitting diode package  400  according to the seventh embodiment. 
     Referring to  FIG. 22 , the light emitting diode package  400  includes a first wavelength conversion member  452  and a second wavelength conversion member  354 . 
     In this embodiment, the first wavelength conversion member  452  may be formed by depositing a wavelength conversion resin on the upper surface of the light emitting diode chip  120  through a dotting process. The wavelength conversion resin may be a light transmitting resin that contains a first wavelength conversion material dispersed therein. 
     When the wavelength conversion material is dotted at the center of the upper surface of the light emitting diode chip  120 , the wavelength conversion material spreads along the upper surface of the light emitting diode chip  120 . As a result, a greater amount of the wavelength conversion material may be dispersed at the center of the upper surface of the light emitting diode chip  120  than regions around the center thereof. Thus, as shown in  FIG. 22 , the first wavelength conversion member  452  has a structure where the first wavelength conversion material has an upwardly convex distribution at the center thereof. 
     Although some exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood by those skilled in the art that these embodiments are given by way of example only, and that various modifications, variations, and alterations can be made without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure should be interpreted according to the following appended claims and equivalents thereto.